Production process and device of lobster feed

Abstract

The invention discloses a production process and device of lobster feed, and the production process of the lobster feed comprises the following steps: step 1, carrying out puffing extrusion treatment on a first material to obtain puffed feed strips; step 2, carrying out first drying treatment on the expanded feed strips; step 3, performing extrusion treatment on the second material outside the expanded feed strip to obtain an extruded feed sleeve, so as to obtain a sandwich feed strip; step 4, cutting the sandwich feed strips to obtain sandwich feed particles; 5, the sandwich feed particles are subjected to second drying treatment.The production technology of the lobster feed can obtain the sandwich feed particles, the sandwich feed particles are mixed feed particles of the expanded feed and the extruded feed, the nutrient substance advantages of the expanded feed and the extruded feed are combined, the lobster breeding requirement is better met, and the lobster breeding quality is improved. The production device of the lobster feed is used for realizing the production process of the lobster feed.

Description

Technical Field

[0001] The invention relates to the technical field of feed processing, and in particular to a production process and device for lobster feed. Background Art

[0002] When lobsters are artificially cultured, the selection and management of feed have an important impact on the health and growth of lobsters. Reasonable feed ratios and feeding strategies can improve breeding efficiency, reduce costs, and improve the quality of lobsters. Lobster feed includes puffed feed, pellet feed, powdered feed, etc. Puffed feed is a loose and porous granular feed formed by tempering, maturation, extrusion of die holes and sudden pressure reduction of raw materials. It has good palatability and nutrients are easier to absorb, but the process is complicated and the cost is high. During the maturation process, it will cause the loss of heat-sensitive nutrients. Therefore, some puffed feeds need to be supplemented with nutrients by spraying in the later stage; pellet feed is a hard pellet made by mixing raw materials and pressing them through a pressing machine. It has less nutrient loss, relatively simple process and low cost, but its palatability is not as good as puffed feed, it is easy to sink to the bottom of the mud, and it is not easy to prey. Some farmers will mix puffed feed and pellet feed for feeding to ensure the comprehensive nutrition of lobsters and at the same time ensure the breeding benefits. Summary of the invention

[0003] The present invention combines the characteristics of puffed feed and pellet feed, and proposes a production process and device for lobster feed, so as to obtain sandwich feed pellets containing puffed feed and extruded pellet feed, which are used to provide comprehensive nutrition for lobsters.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A production process for lobster feed comprises the following steps: Step 1: extruding and puffing the first material to obtain puffed feed strips; Step 2: performing a first drying process on the puffed feed strips; Step 3: Extruding the second material outside the puffed feed strip to obtain an extruded feed sleeve, and combining the extruded feed sleeve and the puffed feed strip to form a sandwich feed strip; Step 4: cutting the sandwich feed strips to obtain sandwich feed particles; Step 5: subjecting the sandwich feed particles to a second drying process.

[0005] Preferably, the raw material components in the first material include at least 30-35 parts of fish meal, 20-30 parts of corn flour, 10-13 parts of soybean flour, 1-2 parts of fish oil, 10-20 parts of spirulina and 4-6 parts of yeast powder; the raw material components in the second material include at least 40-50 parts of wheat, 10-20 parts of rice bran, 10-20 parts of soybean meal, 5-10 parts of meat and bone meal, 0.2-0.6 parts of complex vitamins and 2-3 parts of complex minerals.

[0006] The present invention also proposes a lobster feed production device based on the above-mentioned lobster feed production process, the lobster feed production device, including a first feeding barrel for feeding a first material, a first extrusion die for extruding the first material, a second feeding barrel for feeding a second material, a second extrusion die for extruding the second material and a movable sleeve, the first extrusion die is located at the discharge end of the first feeding barrel, and the second extrusion die is located at the discharge end of the second feeding barrel. The first extrusion die is provided with a plurality of first extrusion holes for extruding expanded feed strips, the second extrusion die is provided with a plurality of second extrusion holes corresponding in number and position to the first extrusion holes, a feeding sleeve for feeding expanded feed strips and a discharge die sleeve for extruding the extruded feed sleeve are provided inside the second extrusion holes, a material channel for feeding the second material is formed between the feeding sleeve and the discharge die sleeve, and a discharge hole for discharging sandwich feed strips is provided at the discharge end of the discharge die sleeve.

[0007] The second extrusion die is fixed at the lower part of the movable sleeve, a guide sleeve coaxial with the movable sleeve is arranged on the outside of the first extrusion die, the upper part of the movable sleeve is sleeved on the outside of the guide sleeve, the movable sleeve is slidably connected with the guide sleeve in the axial direction to change the distance between the first extrusion die and the second extrusion die, and a drying chamber for the first drying treatment of the puffed feed strips is formed between the first extrusion die, the second extrusion die and the movable sleeve.

[0008] Preferably, the second extrusion die is provided with a first air duct and a second air duct, the first air duct is used to connect the drying chamber and the air inlet pipe, the air inlet pipe is connected to the first air pump used to form air intake for the drying chamber, the second air duct is used to connect the drying chamber and the exhaust pipe, the exhaust pipe is connected to the second air pump used to form exhaust for the drying chamber.

[0009] Preferably, the lobster feed production device also includes an adjustment cylinder fixedly connected to the frame, the adjustment cylinder is vertically arranged, and the working end of the adjustment cylinder is fixedly connected to the outer wall of the movable sleeve.

[0010] Preferably, the lobster feed production device also includes a cutting knife for cutting the sandwich feed strips, and the cutting knife is located below the second extrusion die; the cutting knife is connected to the working end of the cutting cylinder, and the cutting cylinder is fixedly connected to the movable sleeve and arranged horizontally.

[0011] Preferably, the lobster feed production device further comprises a guide plate and a drying belt, the guide plate is located below the movable sleeve, the drying belt is located below the discharge end of the guide plate, and a collecting box is provided below the discharge end of the drying belt.

[0012] The beneficial effects of the present invention are: 1. The production process of the lobster feed is used to produce sandwich feed particles, which are mixed feed particles. The mixed feed particles are obtained by combining the puffed feed obtained by extruding and puffing the first material and the extruded feed obtained by extruding the second material. The first material and the second material have different raw materials, providing different nutrients for the feed. The puffed feed combines the nutritional advantages of puffed feed and extruded feed, is rich in nutrition, and can better meet the needs of lobster breeding.

[0013] 2. In the sandwich feed particles obtained by the production process of the lobster feed, the extruded feed is wrapped outside the puffed feed, which can save the subsequent spraying of grease on the puffed feed. At the same time, the extruded feed can be embedded in the porous structure of the puffed feed during extrusion, thereby reducing the loosening efficiency of the puffed feed in the water. At the same time, the puffed feed can reduce the overall density of the extruded feed, reduce the probability of the extruded feed sinking into the mud, and increase the edible rate of the feed in the water.

[0014] 3. The lobster feed production device is used to realize the above-mentioned lobster feed production process, and performs extrusion processing of the feed sleeve on the outside of the puffed feed strip to obtain the sandwich feed strip, and then cuts the sandwich feed strip to obtain the sandwich feed pellets, thereby realizing the production of the sandwich feed pellets. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a step diagram of the lobster feed production process; Figure 2 This is a schematic diagram of the structure of the production device of lobster feed; Figure 3 This is a schematic diagram of the structure of the outer portion of the movable sleeve of the lobster feed production device; Figure 4 This is a schematic diagram of the structure of the active sleeve of the lobster feed production device (when the feed sleeve is extruded); Figure 5 This is a schematic diagram of the structure of the active sleeve of the lobster feed production device (when the expanded feed strips are not extruded); Figure 6 This is a schematic diagram of the structure of the side surface of the movable sleeve of the lobster feed production device; Figure 7 Schematic diagram of the structure of sandwich feed particles.

[0016] In the figure: 1, frame; 2, first feeding cylinder; 3, second feeding cylinder; 4, first extrusion die; 5, second extrusion die; 6, movable sleeve; 7, guide sleeve; 8, expanded feed strip; 9, extruded feed sleeve; 10, cutting knife; 11, sandwich feed pellets; 12, guide plate; 13, drying belt; 14, first air pump; 15, second air pump; 16, drying fan; 17, air inlet pipe; 18, exhaust pipe; 19, collection box; 21. First feed bin; 22. First discharge pipe; 31. Second feed bin; 32. Second discharge pipe; 33. Hose; 41. Protective sleeve; 51. Feed sleeve; 52. Discharge mold sleeve; 53. Material cavity; 54. Material channel; 55. Discharge hole; 56. First air channel; 57. Second air channel; 61. Adjustment cylinder; 62. Connecting block; 63. Drying chamber; 101. Connecting bracket; 102. Cutting cylinder; 111. Puffing core; 112. Extrusion sleeve; 400. First extrusion hole; 500. Second extrusion hole. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Example 1 refer to Figure 1 , a production process of lobster feed, comprising the following steps: Step 1: extruding and puffing the first material to obtain puffed feed strips; Step 2: performing a first drying process on the puffed feed strips; Step 3: Extruding the second material outside the puffed feed strip to obtain an extruded feed sleeve, and combining the extruded feed sleeve and the puffed feed strip to form a sandwich feed strip; Step 4: cutting the sandwich feed strips to obtain sandwich feed particles; Step 5: subjecting the sandwich feed particles to a second drying process.

[0019] refer to Figure 7 The production process of the lobster feed can obtain sandwich feed particles 11, wherein the sandwich feed particles 11 include an internal puffing core 111 and an external extrusion sleeve 112. The sandwich feed particles 11 are mixed feed particles of puffed feed and extruded feed, wherein the puffed feed is obtained by extruding and puffing the first material, and the extruded feed is obtained by extruding the second material.

[0020] The raw material components in the first material at least include 30-35 parts of fish meal, 20-30 parts of corn meal, 10-13 parts of soybean meal, 1-2 parts of fish oil, 10-20 parts of spirulina and 4-6 parts of yeast powder. Among them, fish meal can provide animal protein, as well as essential amino acids and trace elements, corn provides carbohydrates required by lobsters, soybean meal provides high-quality plant protein, and fish oil is used to provide essential fatty acids, which are helpful for the growth and development of lobsters. Spirulina, as a natural nutritional supplement, is rich in vitamins, minerals and antioxidants. Yeast powder, such as brewer's yeast, provides lobsters with rich B vitamins and proteins.

[0021] The raw material components in the second material include at least 40-50 parts of wheat, 10-20 parts of rice bran, 10-20 parts of soybean meal, 5-10 parts of meat and bone meal, 0.2-0.6 parts of complex vitamins and 2-3 parts of complex minerals. Among them, wheat and rice bran provide the necessary energy for lobsters, and soybean meal and meat and bone meal can be used as the main source of protein for lobster growth. Complex vitamins include vitamin A, vitamin D, vitamin E, etc., and complex minerals include calcium, phosphorus, zinc, iron and other minerals, which are helpful for the bone development and immunity enhancement of lobsters during growth.

[0022] Therefore, the sandwich feed pellets 11 combine the nutritional advantages of the above-mentioned puffed feed and extruded feed, are rich in nutrition, and can better meet the needs of lobster breeding. The puffed feed of the sandwich feed pellets 11 is wrapped with the extruded feed, which can save the subsequent spraying of grease on the puffed feed. At the same time, the extruded feed can be embedded in the porous structure of the puffed feed during extrusion, reducing the loosening efficiency of the puffed feed in the water. In addition, the puffed feed can reduce the overall density of the extruded feed, reduce the probability of the extruded feed sinking into the mud, and increase the edible rate of the feed in the water.

[0023] Example 2 This embodiment proposes a lobster feed production device based on the lobster feed production process in Example 1, referring to Figure 2 The frame 1 of the lobster feed production device in this embodiment is provided with a first feeding barrel 2 for feeding a first material, a first extrusion die 4 for extruding the first material, a second feeding barrel 3 for feeding a second material, a second extrusion die 5 for extruding the second material and a movable sleeve 6.

[0024] Specifically, refer to Figure 2 The first feeding cylinder 2 is fixedly arranged on the frame 1 and arranged horizontally, a first feeding bin 21 is arranged at one end of the first feeding cylinder 2, a first discharge pipe 22 arranged vertically is arranged at the other end of the first feeding cylinder 2, a first extrusion die 4 is fixedly arranged at the discharge end of the first discharge pipe 22, and the first extrusion die 4 is provided with a plurality of first extrusion holes 400 for extruding the expanded feed strips 8. The first material enters the first feeding cylinder 2 from the first feeding bin 21, enters the first discharge pipe 22 after being extruded and tempered by the first feeding cylinder 2, and is finally extruded from the first extrusion holes 400 of the first extrusion die 4 to obtain the expanded feed strips 8.

[0025] refer to Figure 4 In this embodiment, a mesh protective cover 41 is disposed outside the first extrusion hole 400 of the first extrusion die 4. The protective cover 41 is used to guide the puffed feed strips 8 extruded from the first extrusion hole 400 to reduce the deflection of the puffed feed strips 8 during extrusion.

[0026] refer to Figure 4 and Figure 5 The outer fixed sleeve of the first extrusion die 4 is connected with a guide sleeve 7, which is coaxially arranged with the movable sleeve 6. The upper part of the movable sleeve 6 is movably connected with the outer part of the guide sleeve 7, forming a sliding sealing connection between the movable sleeve 6 and the guide sleeve 7. An adjustment cylinder 61 is fixedly arranged on the frame 1, and the adjustment cylinder 61 is vertically arranged. The working end of the adjustment cylinder 61 is fixedly connected to the outer wall of the movable sleeve 6 through a connecting block 62. The adjustment cylinder 61 is used to drive the movable sleeve 6 to move in the vertical direction, forming a relative movement of the movable sleeve 6 and the guide sleeve 7 in the axial direction.

[0027] The second extrusion die 5 is fixedly connected to the lower part of the inner hole of the movable sleeve 6, and the movable sleeve 6 moves relative to the guide sleeve 7 to change the distance between the first extrusion die 4 and the second extrusion die 5.

[0028] refer to Figure 2 The second feeding barrel 3 is fixedly arranged on the frame 1 and arranged horizontally. A second feed bin 31 is arranged at one end of the second feeding barrel 3, and a second discharge pipe 32 is arranged at the other end of the second feeding barrel 3. The discharge end of the second discharge pipe 32 is connected to the material cavity 53 inside the second extrusion die 5 through a hose 33. The second extrusion die 5 is provided with a plurality of second extrusion holes 500 for extruding the feed sleeve 9, and the material cavity 53 is connected to the second extrusion holes 500. The second material enters the second feeding barrel 3 from the second feeding bin 31, enters the second discharge pipe 32 and the hose 33 after being extruded by the second feeding barrel 3, and is finally extruded from the second extrusion hole 500 of the second extrusion die 5 to obtain the extruded feed sleeve 9.

[0029] refer to Figure 4 and Figure 5 Further, a feed sleeve 51 and a discharge sleeve 52 are arranged inside the second extrusion hole 500 of the second extrusion die 5, and the feed sleeve 51 and the discharge sleeve 52 are respectively threadedly connected to the second extrusion die 5. The feed sleeve 51 is located above the discharge sleeve 52, and the feed sleeve 51 and the discharge sleeve 52 are coaxially arranged and connected. The feed sleeve 51 is used for feeding the expanded feed strips 8, and the discharge sleeve 52 is used for extruding the feed sleeve 9. A material channel 54 for feeding the second material is formed between the feed sleeve 51 and the discharge sleeve 52, the upper end of the material channel 54 is the feeding section, the upper end of the material channel 54 is connected with the material cavity 53, and the lower end of the material channel 54 is the discharge end. The discharge end of the discharge sleeve 52 is provided with a discharge hole 55 for discharging the sandwich feed strips, and the inner diameter of the discharge hole 55 matches the outer diameter of the sandwich feed strips.

[0030] The number and position of the second extrusion holes 500 correspond to the first extrusion holes 400 respectively. After the first extrusion holes 400 extrude the puffed feed strips 8, the puffed feed strips 8 can enter the second extrusion holes 500 from the feed sleeve 51 and pass through the discharge die sleeve 52. The second material enters the material channel 54 from the material cavity 53 and is extruded and attached to the puffed feed strips 8 to obtain sandwich feed strips. The sandwich feed strips can be extruded at the discharge hole 55.

[0031] refer to Figure 3 and Figure 6 The frame 1 is also provided with a cutting knife 10, which is located below the second extrusion die 5. The cutting knife 10 is used to cut the sandwich feed strips to obtain sandwich feed particles 11. A connecting bracket 101 is fixedly provided on the outer wall of the movable sleeve 6, and a cutting cylinder 102 is provided on the connecting bracket 101. The cutting cylinder 102 is horizontally arranged, and the cutting knife 10 is connected to the working end of the cutting cylinder 102. The cutting cylinder 102 is used to drive the cutting knife 10 to move in the horizontal direction to achieve the horizontal cutting action.

[0032] In this embodiment, the extrusion surface of the second extrusion die 5 is not higher than the lower end surface of the movable sleeve 6 in the vertical direction, which is convenient for the cutting knife 10 to cut the sandwich feed strip.

[0033] refer to Figure 2 The frame 1 of the lobster feed production device is also provided with a guide plate 12, a drying belt 13 and a collection box 19, wherein the guide plate 12 is located below the movable sleeve 6, the drying belt 13 is located below the discharge end of the guide plate 12, and the collection box 19 is located below the discharge end of the drying belt 13. The sandwich feed particles 11 coming out of the second extrusion die 5 are guided to the upper conveying surface of the drying belt 13 by the guide plate 12, and a drying fan 16 is arranged below the drying belt 13, and the drying fan 16 can perform a second drying process on the sandwich feed particles 11 on the drying belt 13, and the sandwich feed particles 11 can be collected by the collection box 19 after drying.

[0034] refer to Figure 4 A drying chamber 63 may be formed between the first extrusion die 4, the second extrusion die 5 and the movable sleeve 6, and the drying chamber 63 is used to perform a first drying process on the expanded feed strips 8. Figure 2 and Figure 4The second extrusion die 5 is provided with a first air channel 56 and a second air channel 57. The first air channel 56 is used to connect the drying chamber 63 and the air inlet pipe 17. The air inlet pipe 17 is connected to the first air pump 14 to form the air inlet of the drying chamber 63. The second air channel 57 is used to connect the drying chamber 63 and the exhaust pipe 18. The exhaust pipe 18 is connected to the second air pump 15 to form the exhaust of the drying chamber 63. The first air pump 14 and the second air pump 15 can form a gas circulation in the drying chamber 63, which is used to discharge the water vapor inside the drying chamber 63, thereby forming the first drying treatment of the puffed feed strips 8, so that the puffed feed strips 8 are hardened.

[0035] When the puffing effect needs to be enhanced, the first air pump 14 and the second air pump 15 cooperate to form a negative pressure inside the drying chamber 63. The process of forming a negative pressure in the drying chamber 63 is as follows: first, the first air pump 14 does not work, the drying chamber 63 is a sealed space, and the second air pump 15 performs air extraction, and a negative pressure is generated inside the drying chamber 63; then, the first air pump 14 and the second air pump 15 work simultaneously and keep the gas flow volume and gas flow rate of the first air pump 14 and the second air pump 15 the same, so that air circulation can be formed inside the drying chamber 63 while maintaining a negative pressure inside the drying chamber 63. This negative pressure can not only enhance the puffing effect of the puffed feed strips 8, but also form a negative pressure in the feed sleeve 51, reduce the air inside the puffed feed strips 8, facilitate the second material to enter the pores of the puffed feed strips 8, and strengthen the combination of the puffed feed strips 8 and the extrusion feed sleeve 9.

[0036] The working process of the production device of lobster feed in this embodiment includes the following steps: Step A1: The first material enters the first feeding cylinder 2 from the first feeding bin 21, enters the first discharging pipe 22 after being extruded and tempered by the first feeding cylinder 2, and is finally extruded from the first extrusion hole 400 of the first extrusion die 4 to obtain an expanded feed strip 8; refer to Figure 4 At this time, the adjustment cylinder 61 is in a contracted state, and the second extrusion die 5 is located at an extreme position close to the first extrusion die 4; Step A2: the expanded feed strips 8 enter the second extrusion hole 500 of the second extrusion die 5 from the feed sleeve 51, and the end of the expanded feed strips 8 enters the discharge hole 55 of the discharge die sleeve 52; Step A3: The second material enters the second feeding barrel 3 from the second feeding bin 31, enters the second discharging pipe 32 and the hose 33 after being extruded by the second feeding barrel 3, and then enters the material cavity 53 of the second extrusion die 5. The second material enters the material channel 54 from the material cavity 53, and is extruded and attached to the puffed feed strips 8. At this time, due to the extrusion pressure of the second material, the second material can enter the pores of the puffed feed strips 8, completing the combination of the puffed feed strips 8 and the second material; Step A4: The expanded feed strips 8 are continuously extruded, and at the same time, the adjustment cylinder 61 pushes the movable sleeve 6 to move downward, see Figure 4 , adjusting the position of the movable sleeve 6 to form a drying chamber 63 of a suitable volume, the drying chamber 63 is used for the first drying process of the puffed feed strips 8 to promote the hardening of the puffed feed strips 8; Step A5: the expanded feed strips 8 and the second material are continuously extruded simultaneously to obtain sandwich feed strips at the discharge hole 55 of the discharge die sleeve 52; Step A6: the cutting knife 10 cuts the sandwich feed strips to obtain sandwich feed particles 11; Step A7: The sandwich feed particles 11 are guided by the guide plate 12 to the upper conveying surface of the drying belt 13. The drying fan 16 below the drying belt 13 can perform a second drying process on the sandwich feed particles 11 on the drying belt 13. After drying, the sandwich feed particles 11 can be collected by the collection box 19.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A production process for lobster feed, characterized in that: The following steps are involved: Step 1: extruding and puffing the first material to obtain puffed feed strips; Step 2: performing a first drying process on the puffed feed strips; Step 3: Extruding the second material outside the puffed feed strip to obtain an extruded feed sleeve, and combining the extruded feed sleeve and the puffed feed strip to form a sandwich feed strip; Step 4: cutting the sandwich feed strips to obtain sandwich feed particles; Step 5: subjecting the sandwich feed particles to a second drying process.

2. The production process of lobster feed according to claim 1, characterized in that: The raw material components in the first material at least include 30-35 parts of fish meal, 20-30 parts of corn flour, 10-13 parts of soybean flour, 1-2 parts of fish oil, 10-20 parts of spirulina and 4-6 parts of yeast powder; The raw material components in the second material at least include 40-50 parts of wheat, 10-20 parts of rice bran, 10-20 parts of soybean meal, 5-10 parts of meat and bone meal, 0.2-0.6 parts of complex vitamins and 2-3 parts of complex minerals.

3. A lobster feed production device, used to implement the lobster feed production process according to claim 1, characterized in that: It comprises a first feeding barrel for feeding the first material, a first extrusion die for extruding the first material, a second feeding barrel for feeding the second material, a second extrusion die for extruding the second material and a movable sleeve, wherein the first extrusion die is located at the discharge end of the first feeding barrel, and the second extrusion die is located at the discharge end of the second feeding barrel; The first extrusion die is provided with a plurality of first extrusion holes for extruding expanded feed strips, the second extrusion die is provided with a plurality of second extrusion holes whose number and positions correspond to the first extrusion holes respectively, a feed sleeve for feeding expanded feed strips and a discharge die sleeve for extruding the expanded feed sleeve are provided inside the second extrusion holes, a material channel for feeding the second material is formed between the feed sleeve and the discharge die sleeve, and a discharge hole for discharging sandwich feed strips is provided at the discharge end of the discharge die sleeve; The second extrusion die is fixed at the lower part of the movable sleeve, a guide sleeve coaxial with the movable sleeve is arranged on the outside of the first extrusion die, the upper part of the movable sleeve is sleeved on the outside of the guide sleeve, the movable sleeve is slidably connected with the guide sleeve in the axial direction to change the distance between the first extrusion die and the second extrusion die, and a drying chamber for the first drying treatment of the puffed feed strips is formed between the first extrusion die, the second extrusion die and the movable sleeve.

4. The lobster feed production device according to claim 3, characterized in that: The second extrusion die is provided with a first air duct and a second air duct, the first air duct is used to connect the drying chamber and the air inlet pipe, the air inlet pipe is connected to a first air pump used to form air intake for the drying chamber, the second air duct is used to connect the drying chamber and the exhaust pipe, the exhaust pipe is connected to a second air pump used to form exhaust for the drying chamber.

5. The lobster feed production device according to any one of claims 3-4, characterized in that: It also includes an adjusting cylinder fixedly connected to the frame, the adjusting cylinder is vertically arranged, and the working end of the adjusting cylinder is fixedly connected to the outer wall of the movable sleeve.

6. The lobster feed production device according to claim 5, characterized in that: It also includes a cutting knife for cutting the sandwich feed strips, and the cutting knife is located below the second extrusion die; the cutting knife is connected to the working end of the cutting cylinder, and the cutting cylinder is fixedly connected to the movable sleeve and is horizontally arranged.

7. The lobster feed production device according to claim 6, characterized in that: It also includes a material guide plate and a drying belt. The material guide plate is located below the movable sleeve, the drying belt is located below the discharge end of the material guide plate, and a collecting box is arranged below the discharge end of the drying belt.

Images