Feed Machine

Floating fish feed extruder machine installation instructions

At present, with the continuous development of the aquaculture industry, the use of aquatic floating fish feed extruder machines is becoming more and more extensive, and there are more and more projects for installing and using aquatic floating fish feed extruders.

Among these many manufacturers using aquatic floating fish feed extruder machines, due to the use of manufacturers Different production managers or engineering installation designers have different understandings of the production characteristics of aquatic fish feed pellet extruders.

The installation methods of the floating fish feed making machines and their supporting facilities are also different, and the selection of installation methods for each part of the floating feed extruder machine and its supporting facilities will directly affect the stability of the floating fish feed extruder machine’s working performance and the humanization of the floating fish feed extruder’s operation.

The aquatic floating fish feed extruder machine described in this article refers to a typical fully automatic control feed extruder, which includes a broken arch feeding bin, a feeder, a dual-shaft differential conditioner, an feed pellet extruder, a pipeline rack, and an electronic control system.

In this paper, some suggestions are given for your reference from the perspective of the selection of the installation method of each part of this type of floating fish feed extruder machine and its supporting facilities.

1. Installation of broken arch feeding bin and feeder

A basic reference data in the floating fish feed extruder machine control system is the flow rate of the material. The amount of water, steam and other liquids added in the system is based on the flow rate of the material, so the stability of the material flow directly affects the stability of the entire floating fish feed extruder machine production.

In order to ensure the stability of the logistics, the system adopts differential weight feeding, that is, the entire feeding bin and the feeder are placed on the load cell, and a closed-loop control is formed between the load cell, the frequency conversion feeder and the computer. feeding.

The basic requirement of differential weight feeding is the soft connection of the upper and lower interfaces, that is, the soft connection between the broken arch feeding bin and the pneumatic gate on the upper part of the bin body, and the soft connection between the feeder outlet and the conditioner inlet. The soft connection of these two places generally uses canvas as the material to connect.

The installation of load cells is another important factor affecting feeding. There are generally two types of sensor installation: hoisting and supporting, both of which can be used according to the needs of the site.

When using hoisting, some measures should be taken to ensure the stability of the silo body. During the production process of the floating fish feed extruder machine, when the material is fed into the feeding bin, the falling of the material causes the entire bin body to shake.

The amplitude of the shaking and the length of the shaking time are closely related to the length of the sensor rod. The feeding data of time follows the data before feeding, but after the material enters the silo, if the silo body keeps shaking, it will directly affect the weighing accuracy of the sensor, so it is required to add a limit device at the lower part of the silo body and meet the limit bit device does not affect weighing.

Another floating fish feed extruder machine installation method is bracket installation. This installation method will not cause shaking, but the entire silo body is easy to move.

This requires that the sensor needs to be fixed on the bracket during floating fish feed extruder machine installation, and the sensor should be installed on both sides of each lifting ear of the feeding silo. Install the limit block to prevent the movement of the entire warehouse body.

During the installation of the broken arch feeding bin, it is necessary to pay attention to the position of the inspection door for floating fish feed extruder machine. To ensure that the inspection door can be opened, an inspection platform needs to be installed at the lower part of the inspection door.

Floating fish feed extruder machine

2. Installation of double shaft differential conditioner

Since the support frame of the dual-shaft differential conditioner is a welded body, there will be a certain deformation during the transportation of the floating fish feed extruder machine.

When the bracket is deformed and installed directly without adjustment, the main shaft of the conditioner and the output shaft of the gearbox will be damaged.

Different shafts, the noise generated by the roller chain coupling when the floating fish feed extruder machine is running will cause the coupling gear and chain to wear, so the support frame must be adjusted during installation so that the conditioner main shaft and the gearbox output shaft are coaxial.

The relative position of the two main shafts is also required when the floating fish feed extruder machine conditioner is installed. During floating fish pellet machine installation, it can be installed according to the mark on the shaft end, or you can choose the relative position for installation. For details, please refer to the manual.

3. Installation of floating fish feed extruder machine

The main machine of the floating fish feed extruder machine is the heaviest equipment in the whole system, and due to the factor of the main motor, it has high requirements on the bearing capacity of the foundation.

During installation, the floating feed extruder machine cannot be placed directly on the foundation. Channel steel (the type of channel steel is determined according to the level of the floating fish feed extruder machine) should be used to make a frame pad under the equipment base according to the size of the extrusion machine base, and fix it with the foundation with expansion screws.

When making the base frame, the flatness of the entire frame must be ensured, and special attention should be paid to the same plane of the main frame and the motor base. This is especially important for the extrusion model that uses an elastic coupling directly connected to the reducer.

For an floating fish feed extruder machine driven by an elastic coupling directly connected to a reduction box, the coaxiality between the output shaft of the main motor and the input shaft of the reduction box must be ensured during installation.

 For the floating fish feed extruder machine driven by the pulley, the driving pulley and the driven pulley must be on the same plane during installation. At the same time, there are also requirements for the tightness of the V-belt. If it is too loose, it is easy to slip.

The service life of the V-belt is to adjust the tension bolt on the motor base to make the tension of the V-belt in an appropriate state, that is, apply a force of 27kg to the midpoint of the straight edge of the belt, and make its deflection offset as 21mm is appropriate.

4.Detailed explanation of floating fish feed extruder machine

Aquatic feed has two production methods: pellet feed and extruded feed. Due to the good absorption rate of extruded aquatic feed and high fish yield, the aquatic market is rapidly transitioning from pellet feed to aquatic extruded feed.

 The extruded fish feed is an extruded porous feed obtained after the high temperature and high pressure of the floating fish feed extruder machine and the sudden depressurization.

Both extruded feed and pelleted feed can be used as feed for fish. The extruded feed is better because of its good palatability and high digestibility. The extruded feed is produced by the process of conditioning, puffing and liquid spraying:

In the process of feed conditioning, the production process of extruded feed is to add water and steam together to fully contact the material. After conditioning, the degree of protein maturity is increased by 30%, and the moisture content is about 25%. The reason why the extruded material can improve its digestive utilization.

  • Mainly because the processing technology requires the raw materials to be pulverized more finely, and the high temperature of the floating fish feed extruder machine process increases the degree of starch ripening, which is conducive to the digestion and absorption of feed by fish;
  • Secondly, the stability of the extruded material in water for 12-36 hours, It is convenient to visually check the feeding situation of the fish and reduce water pollution;
  • Thirdly, the instant strong rubbing of high temperature and high humidity during the floating fish feed extruder machine puffing process can kill some harmful bacteria in the raw materials.
poultry feed manufacturing machine

How does poultry feed manufacturing machine affect pellets length?

With the vigorous development of modern aquaculture and feed industry, the requirements for feed quality are getting higher and higher. For pellet feed produced by poultry feed manufacturing machine, pellet length is a very important quality evaluation index.

Neat and consistent pellet feed not only meets the sales needs of feed manufacturers, but also meets the actual breeding needs of users. Pellets that are too long, too short or uneven are not conducive to animal feeding. In actual production, the length of the pellets produced by the poultry feed manufacturing machine is generally required to be 2 to 3 times the diameter of the pellets.

For example, granules with a diameter of 3 mm are generally produced with a length of 6 to 9 mm. Of course, according to actual user needs and different feed varieties, the length requirements are not necessarily within this range.

Therefore, in order to produce feed pellets that meet the requirements or as close as possible to the requirements, we will discuss some factors that affect the pellet length of the poultry feed pellet making machine and find the corresponding control methods to make it beneficial to the production needs, which is important for feed manufacturers significance.

Based on years of experience in poultry feed granulator design and field debugging, we will discuss this issue from the following aspects.

poultry feed manufacturing machine

1.Parameters affecting the poultry feed manufacturing machine itself:

The output of the poultry feed manufacturing machine is Q (kg/h), the inner diameter of the ring die is D (mm), the effective width of the ring die is W (mm), the linear speed of the ring die is V (m/s), and the rotational speed of the ring die is n (r /min), the ring die aperture is d (mm), the ring die opening rate is m, the number of openings is n (pieces), and the granulation length is L (mm),

For the above formula, it is not difficult to analyze the factors affecting the pellet length L of the poultry feed manufacturing machine:

(1) The influence of the output of the poultry feed manufacturing machine.

It can be seen from the formula that the pellet length L is proportional to the output Q. With other parameters constant, the higher the yield, the longer the pellet, otherwise the shorter the pellet. Therefore, adjusting the output of the poultry feed pelletizer to meet specific pellet length requirements is a possible option.

In actual feed production, feed manufacturers do the same, sometimes sacrificing large amounts of output to meet pellet length requirements. This issue will be mentioned in the following discussion.

(2) Influence of ring die line speed or rotational speed.

It can be seen from the formula that the pellet length L is inversely proportional to the ring die linear velocity V or the ring die linear velocity n. When the feeding speed, that is, the output Q, remains constant, the faster the ring die speed, the shorter the instantaneously extruded pellets, and vice versa. For different sizes of poultry feed pelletizers, the rotational speed of the ring die varies greatly.

Generally, the rotating speed of the small poultry feed making machine is high, and the rotating speed of the large poultry feed manufacturing machine is low, but the linear speed of the ring die is controlled within a suitable range, generally between 6m/s~9m/s, to meet the needs of granulation.

When the linear speed of the ring die is small, the quality of the pellets is high, but the pellets may be longer than required, and the line speed is too small, which will affect the output; when the linear speed of the ring die is high, although it is beneficial to improve the output, the pellets may be shorter than the requirements, and the quality of the pellets.

It will become worse, which requires the feed manufacturer to choose its own ring die line speed according to different feed varieties, and realize it by changing the transmission ratio of the poultry feed manufacturing machine transmission system.

(3) Influence of ring die aperture and porosity.

The ring die aperture D has no direct effect on the pellet length L, it has an effect on the length L together with the number of openings N, that is, the size of the ring die opening ratio, because the opening ratio and the square of the ring die diameter D and the number of openings N is proportional to the product of .

The larger the porosity of the ring die, the shorter the pellets, and vice versa, the longer the pellets. The aperture ratio of the ring die corresponds to different ring die apertures. For example, a ring die has an opening rate of about 25%, and a ring die has an opening rate of about 38%.

Generally speaking, the larger the pore size, the higher the open porosity. In actual production, especially when producing small-diameter pellets, such as 1.8mm shrimp, some users complain that the pellets are too long, which is caused by the relatively low opening rate of the ring die when the aperture is small.

One of the solutions is to sacrifice part of the yield, or to achieve by increasing the line speed of the ring die. In addition, adjusting the cutter is discussed below.

(4) Influence of ring die inner diameter, effective width and pellet density.

For the poultry feed manufacturing machine, the inner diameter D of the ring die and the effective width W of the ring die are fixed parameters, which generally do not change, and it is not easy for users to change them, so they will not be discussed here. The pellet density is related to the raw material for granulation and also to the compression ratio of the ring die.

The higher the compression ratio, the firmer and denser the pellets will be. However, for general products, the pellet density is not very different, so the pellet density is not the main influencing parameter, so it will not be discussed too much here. In short, for the same granulation raw material, the larger the pellet density, the shorter the pellet length.

2.How to solve the oil-free phenomenon in the production process of the poultry feed pellet making machine?

Poultry feed manufacturing machines are powered by electricity, but in many cases oil drive has become essential. As we all know, the equipment works fast and depends entirely on the power belt, and oil is particularly important as the power supply of the equipment.

Solve the problem of no oil in the poultry feed manufacturing machine:

(1) The manufacturer of the complete set of equipment with an output of 5 tons of concentrate recommends that you check the main shaft and rotor of the poultry feed pellet machine first to ensure that there is no material residue in the gap.

(2) The manufacturer of the small poultry feed manufacturing machine recommends that the user needs to carefully clean the filter screen in the oil filter.

(3) Remove the grease block of the poultry feed manufacturing machine. Usually, the tool of choice is: an effective hollow tube of a certain length, mainly used to clean the impurities stuffed into the oil hole.

(4) We often say that in addition to checking the above matters, we should also check whether there is oil leakage at the refueling part. If the oil leak is particularly serious, it will definitely lead to no oil supply. The solution to this problem is to add an oil liner.