Equipment and production process for soft granular shrimp feed

Abstract

The present application discloses a device for producing soft granular shrimp feed and a production process thereof, relating to the technical field of feed production equipment, including an expansion box, a steam generator, a stirring device, and a heating device; the expansion box has a steam space and a heating space inside; the stirring device includes a stirring tank, a sleeve, and a first driving member; the stirring tank has a cavity inside, and a plurality of air holes are provided on the circumference of the stirring tank; the stirring tank is also provided with a plurality of feed inlets and a plurality of discharge inlets; the stirring tank is located inside the sleeve, and a clearance space is provided between the sleeve and the stirring tank; the steam generator is in communication with the clearance space; the stirring tank is rotatably connected to the sleeve, and the first driving member drives the stirring tank to rotate; the expansion box is provided with a feed pipe, a feed pipe, and a discharge pipe. The present application can make the contact reaction between the feed and the steam more uniform, thereby improving the quality of the feed after expansion.

Description

Technical Field

[0001] The present application relates to the technical field of feed production equipment, and in particular to equipment for producing soft granular shrimp feed and a production process thereof. Background Art

[0002] my country is the only country in the world where the total volume of aquaculture exceeds the total volume of fisheries, making it the world's largest aquaculture producer, with a total volume of over 45 million tons, accounting for approximately 70% of the world's total. Among these, shrimp is one of the most common aquaculture products in my country. Due to its wide adaptability to salinity levels, strong tolerance, strong disease resistance, and rapid growth, the aquaculture industry is booming across my country, becoming a pillar of the fishery industry in some regions and an indispensable delicacy on consumers' tables.

[0003] To improve the yield and quality of shrimp farming, feeds are often tailored to the shrimp's lifestyle and other characteristics. The quality of the feed directly determines the yield and quality of shrimp farming. Shrimp feed is typically powdered. To ensure the feed's palatability and storage stability, a certain amount of water is often added during the production process, making it easier for the shrimp to ingest and digest, and also making it easier to store and transport.

[0004] Currently, low-temperature puffing is commonly used to increase the moisture content of shrimp feed. This method produces soft pellets (soft pellets). During the low-temperature puffing process, the feed first comes into contact with steam to increase its moisture content, and then heat is used to evaporate the moisture, causing the feed to expand.

[0005] However, the puffing effect of feed and its moisture content after puffing are closely related to the effect of the feed's contact reaction with steam. When a large amount of feed is in contact with steam, the reaction between the feed and steam is prone to unevenness, which will affect the quality of the puffed feed. Summary of the Invention

[0006] The present application provides a device for producing soft granular shrimp feed and a production process thereof, which can make the contact reaction between the feed and steam more uniform, thereby improving the quality of the feed after expansion.

[0007] On the one hand, the present application provides a device for producing soft pellet shrimp feed, which adopts the following technical solution:

[0008] A device for producing soft granular shrimp feed, comprising a puffing box, a steam generator, a stirring device, and a heating device; the puffing box has a steam space and a heating space inside, the steam space is located above the heating space, and the heating device is arranged in the heating space;

[0009] The stirring device includes a stirring tank, a sleeve, and a first driving member. The stirring tank is located in the steam space. The interior of the stirring tank has a cavity for holding feed. The stirring tank is provided with a plurality of air holes on its circumference, and the size of the air holes is smaller than the minimum particle size of the feed. The stirring tank is also provided with a plurality of feed inlets and a plurality of discharge ports. The sleeve is located in the steam space and connected to the expansion box. The stirring tank is located inside the sleeve. A clearance space is provided between the inner wall of the sleeve and the stirring tank. The feed inlet and the discharge port are in communication with the clearance space.

[0010] The steam generator is arranged outside the expansion box, and the steam generator is communicated with the clearance space;

[0011] The stirring tank is rotatably connected to the sleeve, the first driving member is provided on the sleeve and connected to the stirring tank, the first driving member drives the stirring tank to rotate, and the rotation axis of the stirring tank coincides with the axis of the sleeve;

[0012] The expansion box is provided with a feed pipe, a through pipe and a discharge pipe. The feed pipe connects the cavity with the outside, the through pipe connects the cavity with the heating space, and the discharge pipe connects the heating space with the outside.

[0013] By adopting the above technical solution, after the feed enters the cavity through the feed port from the feed pipe, the first driving member drives the mixing tank to rotate relative to the sleeve, so that the feed can be evenly distributed in the cavity. At the same time, after the steam generator generates steam and enters the clearance space, the steam can enter the cavity through a plurality of air holes, so that the contact reaction between the steam and the feed is more uniform, thereby improving the quality of the final feed after expansion.

[0014] Optionally, the sleeve is arranged obliquely in the steam space, the steam generator is communicated with the cavity at a position close to the inclined upper end of the sleeve, and the feed pipe is communicated with the cavity at a position close to the inclined lower end of the sleeve.

[0015] By adopting the above technical solution, the intensity of the movement of the feed in the cavity after the mixing tank rotates can be intensified. In addition, the feed is affected by its own gravity inside the inclined mixing tank, which can facilitate the feed to pass through the discharge port and then through the feed pipe into the heating space, reducing the probability of the feed adhering to the inner wall of the mixing tank.

[0016] Optionally, the stirring device further comprises a plurality of stirring components, wherein the stirring components are arranged on the cavity wall of the cavity, and the plurality of stirring components are distributed in a circular array with the axis of the stirring tank as the axis.

[0017] By adopting the above technical solution, several stirring components move as the stirring tank rotates, which can improve the stirring effect of the feed in the cavity as the stirring tank rotates, thereby further making the feed more evenly distributed in the cavity, and further making the contact reaction between the feed and the steam more uniform.

[0018] Optionally, the stirring assembly includes a first stirring member, and a groove is formed on the first stirring member, wherein the opening direction of the groove is the same as the direction in which the first stirring member moves as the stirring tank rotates.

[0019] By adopting the above technical solution, the first stirring members move as the stirring tank rotates. During the movement of the first stirring members, part of the feed will be carried along by the grooves, thereby further improving the stirring effect of the stirring assembly on the feed in the cavity.

[0020] Optionally, the stirring assembly further comprises a rotating drum, the rotating drum being located in the groove, the rotating drum being rotatably connected to the first stirring member, and the rotation axis of the rotating drum being parallel to the rotation axis of the stirring tank;

[0021] The rotating drum has a screening chamber inside, and a plurality of feed holes are provided on one side of the rotating drum for feeding individual feed particles into the screening chamber. The rotating drum has a plurality of screening slots adapted to the feed particles on the wall of the screening chamber away from the feed holes. The rotating drum also has a discharge port on one end of the rotating drum close to the feed pipe.

[0022] The center of gravity of the rotating drum is eccentrically arranged, and under the action of its own gravity, the rotating drum can keep the screening trough located below the feeding hole.

[0023] By adopting the above technical solution, the feed enters the screening cavity through the plurality of feed holes and falls into the screening trough respectively. Since the mixing tank is tilted, if the feed particles are fully in contact with the steam, they can leave the screening trough under the action of their own gravity and move downward. Finally, they leave the screening cavity through the discharge port and fall into a position near the feed pipe in the cavity. In this way, the feed particles that are fully in contact with the steam can first pass through the feed pipe into the heating space for subsequent processing, and the feed particles that are not fully in contact with the steam have more time to contact with the steam, thereby making the contact reaction between the feed and the steam more uniform, thereby improving the quality of the final feed after expansion.

[0024] Optionally, the stirring device also includes a plurality of vibration components, which are arranged on the first stirring member. The vibration components include an elastic member and an impact member. The impact member is slidingly connected to the first stirring member, and the elastic member drives the impact member to slide toward the direction close to the rotating cylinder; the outer surface of the rotating cylinder is uneven, and the elastic member drives the impact member to maintain contact with the outer surface of the rotating cylinder.

[0025] By adopting the above technical solution, during the process of the mixing tank rotating and driving the rotating drum to rotate relative to the first stirring member, the vibration component is frequently triggered by the rotating drum, so that the vibration component frequently vibrates the rotating drum, thereby helping the feed particles to enter the screening chamber through the feed hole, helping the feed particles that have fully contacted and reacted with the steam to leave the screening trough and finally leave the screening chamber through the discharge port; at the same time, when the rotating drum vibrates in the feed particles, it can increase the gaps between the feed particles, thereby facilitating the contact reaction between the feed particles and the steam, thereby further improving the efficiency of the contact reaction between the feed particles and the steam.

[0026] Optionally, the stirring device further includes a plurality of second stirring members, which are arranged in the cavity and connected to the cavity wall of the cavity, and the second stirring members are located between adjacent stirring components; the second stirring members are inclined relative to the axis of the stirring tank, and during the rotation of the stirring tank, the second stirring members drive the feed in the cavity to move toward the direction close to the steam generator.

[0027] By adopting the above technical solution, during the rotation of the stirring tank, the plurality of second stirring members drive the feed particles in the cavity to move obliquely upward and then move back to their original position under the action of their own gravity, which can effectively prevent the feed particles from accumulating in the cavity near the inclined lower end for a long time. This can not only improve the probability and efficiency of the contact reaction between the feed particles and the steam, but also reduce the probability of the feed particles sticking together and forming lumps, making it easier for subsequent feed particles to enter the heating space through the feed pipe.

[0028] Optionally, the heating device includes a heating component and a feeding component, and the heating component is located in the heating space; the feeding component includes a third driving member and a spiral blade, and the spiral blade is rotatably connected to the puffing box. The third driving member is arranged on the puffing box and drives the spiral blade to rotate, and the rotation of the spiral blade drives the feed in the heating space to move toward the discharge pipe.

[0029] By adopting the above technical solution, the feed particles that have fully reacted with the steam enter the heating space and are expanded under certain temperature conditions. At the same time, the feeding component will drive the feed particles to move while expanding, and finally the expanded feed particles can be discharged through the discharge pipe in time, thereby improving the delivery efficiency of the expanded feed.

[0030] Optionally, the sleeve is rotatably connected to the expansion box, and the rotation axis of the sleeve is perpendicular to its own axis; the stirring device also includes a second driving member, which is arranged on the expansion box, and the second driving member drives the sleeve to rotate.

[0031] By adopting the above technical solution, the second driving member drives the sleeve to rotate relative to the puffing box, which can facilitate the staff to adjust the inclination of the mixing tank, so that the staff can control the feed particles of different components at different moisture contents to be screened out by the mixing assembly, thereby expanding the scope of application of the mixing device and improving the flexibility of the use of the mixing device.

[0032] On the other hand, the present application also provides a process for producing soft pellet shrimp feed, which adopts the following technical solution:

[0033] A process for producing soft pellet shrimp feed is based on the above-mentioned soft pellet shrimp feed production equipment, and the specific steps are as follows:

[0034] S1, mixing the raw materials and then coarsely crushing them;

[0035] S2, mixing the coarsely pulverized raw materials and additives uniformly and then ultrafine grinding;

[0036] S3, putting the material obtained after ultrafine grinding into the soft granule shrimp feed production equipment for low-temperature puffing and granulation;

[0037] S4, cooling the expanded feed pellets;

[0038] S5. Mix the additives evenly and spray them on the surface of the cooled feed particles.

[0039] In summary, this application has at least one of the following beneficial effects:

[0040] 1. It can make the contact reaction between feed and steam more uniform, thereby improving the quality of the feed after expansion;

[0041] 2. The feed that has fully reacted with steam can be heated first, and the feed that has not fully reacted with steam can continue to react with steam, thereby ensuring the efficiency of the feed-steam contact reaction while also ensuring the feed-steam contact reaction is sufficient, thereby improving the effect of subsequent feed puffing;

[0042] 3. It can reduce the phenomenon of feed adhesion and feed clumping, and help the feed to be smoothly sent to the heating space for expansion after contact and reaction with steam;

[0043] 4. It can facilitate the staff to adjust the stirring device according to different components of the feed, different moisture content and other factors, thereby expanding the scope of application of the equipment and improving the flexibility of the use of the stirring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic structural diagram of a device for producing soft granular shrimp feed according to Example 1;

[0045] Figure 2 yes Figure 1 Cross-sectional view along line AA;

[0046] Figure 3 1 is a schematic structural diagram of the stirring device in Example 1;

[0047] Figure 4 yes Figure 3 Cross-sectional view of the middle mixing tank along line BB;

[0048] Figure 5 yes Figure 4 Cross-sectional view along CC line;

[0049] Figure 6 yes Figure 5 Enlarged view of point D in the middle.

[0050] Explanation of Reference Numerals: 1. expansion box; 11. steam space; 12. heating space; 2. steam generator; 3. stirring device; 31. stirring tank; 311. cavity; 312. vent hole; 313. feed port; 314. discharge port; 32. sleeve; 321. feed hopper; 322. discharge hopper; 33. first driving member; 34. second driving member; 35. stirring assembly; 351. first stirring member; 3511. groove; 352. rotating drum; 3521. Screening chamber; 3522. Feed hole; 3523. Screening trough; 3524. Discharge port; 36. Vibration assembly; 361. Elastic member; 362. Impact member; 37. Second stirring member; 38. Clearance space; 4. Heating device; 41. Heating assembly; 411. Heat source; 412. Heating wire; 42. Feeding assembly; 421. Spiral sheet; 422. Third driving member; 5. Partition; 6. Feed pipe; 7. Through pipe; 8. Discharge pipe. DETAILED DESCRIPTION

[0051] The following is combined with Figure 1-6 This application is described in further detail.

[0052] Example 1:

[0053] The present application discloses an apparatus for producing soft granular shrimp feed, which is used to perform low-temperature puffing treatment on powdered shrimp feed, thereby obtaining shrimp feed pellets with a soft texture and a higher water content (about 20-25%).

[0054] Reference Figure 1 and Figure 2 The equipment for producing soft pellet shrimp feed includes an expansion tank 1, a steam generator 2, a stirring device 3, and a heating device 4. The expansion tank 1 provides a place for low-temperature expansion of the feed; the steam generator 2 generates steam to allow the feed to react with the steam; the stirring device 3 stirs the feed during the reaction process to ensure sufficient contact and reaction between the feed and the steam; and the heating device 4 heats the feed after the reaction with the steam to cause low-temperature expansion.

[0055] After the powdered feed is put into the puffing box 1, the steam generated by the steam generator 2 is also sent into the puffing box 1 to contact the feed. At the same time, the stirring device 3 stirs the feed to ensure that the feed and the steam are fully contacted and reacted. Then, the feed that has completed the contact reaction with the steam is heated by the heating device 4 to evaporate the water inside, thereby achieving low-temperature puffing and finally obtaining soft granular shrimp feed.

[0056] In this embodiment, the puffing box 1 is preferably a rectangular parallelepiped structure. The puffing box 1 has a steam space 11 for the feed to react with steam and a heating space 12 for the feed to puff at low temperature. The steam space 11 is located above the heating space 12.

[0057] Furthermore, a thermally insulating partition 5 is preferably fixedly installed inside the expansion box 1. The partition 5 divides the interior of the expansion box 1 into a steam space 11 and a heating space 12. The partition 5 provides insulation for the heating space 12, thereby improving the efficiency of low-temperature expansion of the feed in the heating space 12. The partition 5 also provides insulation for the steam space 11, thereby reducing the impact of the high temperature in the heating space 12 on the contact reaction between the feed and steam in the steam space 11. In this embodiment, the partition 5 is preferably installed horizontally inside the expansion box 1 and is preferably made of a thermally insulating material (such as rock wool, glass wool, etc.).

[0058] Reference Figure 2 and Figure 3The stirring device 3 includes a stirring tank 31, a sleeve 32 and a first driving member 33, and the stirring tank 31, the sleeve 32 and the first driving member 33 are all located in the steam space 11. Among them, the stirring tank 31 and the sleeve 32 are both cylindrical structures. The stirring tank 31 is installed inside the sleeve 32, and the stirring tank 31 is rotatably connected to the sleeve 32, and the rotation axis of the stirring tank 31 coincides with the axis of the sleeve 32 and its own axis; the first driving member 33 is fixedly installed on the outside of the sleeve 32 and is located at one end of the axial direction of the sleeve 32, and the first driving member 33 is used to drive the stirring tank 31 to rotate relative to the sleeve 32. In this embodiment, the first driving member 33 is preferably a servo motor, and the output shaft of the first driving member 33 is fixedly connected to the stirring tank 31, and the operation of the first driving member 33 drives the stirring tank 31 to rotate in a certain direction relative to the sleeve 32.

[0059] The interior of the mixing tank 31 has a cavity 311 for storing feed; a plurality of air holes 312 are provided on the peripheral side of the mixing tank 31, and the aperture of the air holes 312 is smaller than the minimum particle size of the feed; a plurality of feed ports 313 and a plurality of discharge ports 314 are respectively provided at both ends of the axial direction of the mixing tank 31; among them, the air holes 312, the feed ports 313 and the discharge ports 314 are all connected to the cavity 311 and all pass through the mixing tank 31.

[0060] The end faces at both ends of the mixing tank 31 in the axial direction are respectively fitted and abutted against the inner side faces at both ends of the sleeve 32 in the axial direction. There is a clearance space 38 between the peripheral side face of the mixing tank 31 and the corresponding inner side face of the sleeve 32. The clearance space 38 surrounds the mixing tank 31 on the peripheral side of the mixing tank 31, and the clearance space 38 is connected to the cavity 311 through a plurality of air holes 312.

[0061] The two ends of the sleeve 32 in the axial direction respectively have a feed hopper 321 and a discharge hopper 322. One end opening of the feed hopper 321 is connected to the feed port 313, and one end opening of the discharge hopper 322 is connected to the discharge hopper 322. In the process of the mixing tank 31 rotating relative to the sleeve 32, the feed hopper 321 will remain connected to at least one feed port 313, and the discharge hopper 322 will also remain connected to at least one discharge port 314.

[0062] A feed pipe 6 , a feed pipe 7 and a discharge pipe 8 are also fixedly mounted on the expansion box 1 .

[0063] The feed pipe 6 is fixedly installed on the top of the expansion box 1. One end of the feed pipe 6 is located in the steam space 11 and is connected to the end of the feed hopper 321 away from the feed port 313; the other end of the feed pipe 6 is located outside the expansion box 1 and is connected to the feed feeding equipment.

[0064] The feed pipe 7 is passed through and fixedly installed on the partition 5. One end of the feed pipe 7 is located in the steam space 11 and is connected to the end of the discharge hopper 322 away from the discharge port 314; the other end of the feed pipe 7 is located in the heating space 12, and its opening is located at the top of one end of the heating space 12.

[0065] The discharge pipe 8 is fixedly installed at the bottom of the expansion box 1, one end of the discharge pipe 8 is located in the heating space 12, and its opening is located at the bottom of the heating space 12 away from the end of the feed pipe 7; the other end of the discharge pipe 8 is located outside the expansion box 1 and is connected to the subsequent processing equipment of the feed.

[0066] In this embodiment, the feed pipe 6, the feed pipe 7, and the discharge pipe 8 are preferably all hoses to facilitate bending and deformation. Furthermore, the feed pipe 6, the feed pipe 7, and the discharge pipe 8 are preferably all used in conjunction with an air suction device (such as a blower) to ensure smooth passage of the feed. In this embodiment, since the combination of pipes with air suction devices is common in the prior art, they will not be described in detail here, and the corresponding air suction devices will be omitted in the accompanying drawings.

[0067] The steam generator 2 is fixedly mounted on the top of the expansion tank 1. A pipe is externally connected to the steam generator 2 and fixedly connected to the sleeve 32. The steam generator 2 communicates with the clearance space 38 through the pipe. In this embodiment, the pipe external to the steam generator 2 is preferably a hose to facilitate bending and deformation. Furthermore, since the steam generator 2 is common in the prior art, a detailed description thereof will not be given here, and only a brief representation is provided in the accompanying drawings.

[0068] Furthermore, the sleeve 32 is preferably installed at an angle in the steam space 11, and the axis of the sleeve 32 is preferably inclined relative to the length direction of the expansion tank 1 and perpendicular to the width direction of the expansion tank 1. In this case, the feed hopper 321 is located at the inclined upper end of the sleeve 32, the discharge hopper 322 is located at the inclined lower end of the sleeve 32, and the position where the steam generator 2 communicates with the clearance space 38 through a pipeline is close to the inclined upper end of the sleeve 32.

[0069] When sleeve 32 is tilted, the feed's movement within cavity 311 intensifies as the mixing tank 31 rotates relative to sleeve 32, enhancing the stirring effect of the mixing device 3 on the feed, thereby ensuring sufficient contact and reaction between the feed and the steam. Furthermore, when sleeve 32 is tilted, more steam generated by steam generator 2 can evenly enter cavity 311 through the plurality of air holes 312 and come into contact with the feed.

[0070] In addition, after the sleeve 32 is installed at an angle, the feed in the cavity 311 can smoothly leave the cavity 311 through the discharge hopper 322 under the action of its own gravity, and then enter the heating space 12 through the feed pipe 7. In this embodiment, it is preferred that the sleeve 32 is equipped with a gate for controlling the opening and closing of the opening of the discharge hopper 322 near the discharge port 314. When the feed in the cavity 311 contacts and reacts with the steam, the gate closes the opening of the discharge hopper 322, and the feed in the cavity 311 cannot leave through the discharge port 314. When the feed in the cavity 311 contacts and reacts with the steam, the gate opens the opening of the discharge hopper 322, and the feed in the cavity 311 can enter the discharge hopper 322 through the discharge port 314. In this embodiment, since the gate with the above-mentioned function is a common existing technology, it will not be described in detail here, and it is only briefly shown in the accompanying drawings.

[0071] Furthermore, the stirring device 3 further includes a second driving member 34, which is fixedly mounted outside the expanding tank 1 and located on one side in the width direction of the steam space 11. The sleeve 32 is rotatably connected to the expanding tank 1. The rotation axis of the sleeve 32 is parallel to the width direction of the expanding tank 1, and the second driving member 34 drives the sleeve 32 to rotate relative to the expanding tank 1. In this embodiment, the second driving member 34 is preferably a servo motor. The output shaft of the second driving member 34 is fixedly connected to the center of the circumference of the sleeve 32. The operation of the second driving member 34 drives the sleeve 32 to rotate relative to the expanding tank 1.

[0072] In this embodiment, the second driving member 34 preferably controls the rotation of the sleeve 32 relative to the expanding tank 1 with high precision. The sleeve 32 has a limited range of rotation relative to the expanding tank 1. After rotation, the sleeve 32 remains tilted and its tilt direction remains unchanged (the tilt angle changes). During the rotation of the sleeve 32 relative to the expanding tank 1, the external pipes of the steam generator 2, the feed pipe 6, and the feed pipe 7 are all able to bend and deform accordingly, thereby minimizing the impact on the passage of feed through the feed pipe 6 and the feed pipe 7, as well as the passage of steam through the pipe.

[0073] Back to Figure 1 and Figure 2 Furthermore, the heating device 4 includes a heating assembly 41 for heating and a feeding assembly 42 for driving the feed to move. The feeding assembly 42 includes a third driving member 422 and a spiral piece 421. The spiral piece 421 is located in the heating space 12. In this embodiment, the spiral piece 421 is preferably a cylindrical structure as a whole, and the shape of the spiral piece 421 is adapted to the shape of the heating space 12. The spiral piece 421 is rotatably connected to the expansion box 1. The rotation axis of the spiral piece 421 coincides with its own axis and is parallel to the length direction of the expansion box 1. There is a gap between the outer side of the spiral piece 421 and the inner wall of the heating space 12.

[0074] The third driving member 422 is fixedly installed on the outside of the puffing box 1. In this embodiment, the third driving member 422 is preferably installed at the end of the puffing box 1 away from the discharge pipe 8; and the third driving member 422 is preferably a servo motor. The output shaft of the third driving member 422 is fixedly connected to the spiral piece 421, and the operation of the third driving member 422 drives the spiral piece 421 to rotate relative to the puffing box 1.

[0075] The spiral blade 421 has a spiral structure. When the third driving member 422 drives the spiral blade 421 to rotate, it can drive the feed in the heating space 12 toward the discharge pipe 8, thereby facilitating the feed in the heating space 12 to exit through the discharge pipe 8 after low-temperature expansion. In this embodiment, the end of the feed pipe 7 remote from the discharge hopper 322 is preferably connected to the top of the end of the heating space 12 remote from the discharge pipe 8. This allows the feed in the steam space 11 to enter the heating space 12 through the feed pipe 7 and then pass completely through the heating space 12 along its length.

[0076] The heating assembly 41 includes a heating wire 412 and a heat source 411. The heating wire 412 is fixedly mounted on the inner wall of the heating space 12, and the heat source 411 is fixedly mounted on the outside of the expansion tank 1, with one end of the heating wire 412 fixedly connected to the heat source 411. The heat source 411 converts electrical energy into thermal energy and outputs the thermal energy to the heating wire 412. The heating wire 412 heats the feed in the heating space 12, thereby enabling low-temperature expansion of the feed in the heating space 12. In this embodiment, the heating wire 412 is preferably spiral-shaped, and the heat source 411 is preferably located on the side of the expansion tank 1 away from the third drive member 422. In this embodiment, since the heating assembly 41 is common prior art, it will not be described in detail here, and only a brief description is provided in the accompanying drawings.

[0077] In this embodiment, the rotation speed of the third driving member 422 and the output power of the heat source 411 are preferably adjustable, so that the feed can be low-temperature expanded from entering the heating space 12 to leaving the heating space 12 through the discharge pipe 8 under the action of the feeding component 42, thereby improving the expansion efficiency of the feed.

[0078] Reference Figure 3 and Figure 4 Furthermore, the stirring device 3 further includes a plurality of stirring components 35, which are distributed in a circular array around the axis of the stirring tank 31. In this embodiment, the stirring device 3 preferably includes a total of four stirring components 35. In other embodiments, the number of first stirring members 351 can be more or less.

[0079] Reference Figure 4 and Figure 5The stirring assembly 35 includes a first stirring member 351. The first stirring member 351 is located in the cavity 311, and one side of the first stirring member 351 is fixedly connected to the peripheral wall of the cavity 311. The length of the first stirring member 351 is parallel to the axis of the stirring tank 31. The first stirring member 351 is provided with a groove 3511. The groove 3511 forms an opening on the first stirring member 351, and the direction of the opening is the same as the direction of movement of the first stirring member 351 as the stirring tank 31 rotates.

[0080] Furthermore, the stirring assembly 35 further includes a rotating drum 352. The rotating drum 352 is generally cylindrical in structure. The rotating drum 352 is partially located in the groove 3511. The shape of the groove 3511 is adapted to the portion of the rotating drum 352 located therein. The rotating drum 352 is rotatably connected to the first stirring member 351. The rotation axis of the rotating drum 352 coincides with the axis of the rotating drum 352 itself and is parallel to the length of the first stirring member 351.

[0081] The rotating drum 352 has a screening cavity 3521 for screening feed inside. A plurality of feed holes 3522 are provided on one side of the rotating drum 352's peripheral wall for feeding feed into the screening cavity 3521. In this embodiment, the feed holes 3522 are preferably larger than the maximum particle size of a single feed and are only large enough to allow a single feed to pass through.

[0082] The side of the screening chamber 3521 away from the feed hole 3522 is flat, and is provided with a number of screening slots 3523 adapted to the particle size of individual feed particles. A discharge port 3524 is provided at the end of the rotating drum 352 near the discharge port 314, through which feed exits the screening chamber 3521. One end of the discharge port 3524 communicates with the screening chamber 3521, and the other end extends through the end of the rotating drum 352 away from the feed hole 3522.

[0083] The center of gravity of the rotating drum 352 is eccentrically positioned. In this embodiment, it is preferably offset from the axis of the rotating shaft, away from the feed holes 3522. As the first stirring member 351 rotates with the mixing tank 31, the rotating drum 352, under the action of its own gravity, can rotate relative to the first stirring member 351, maintaining the same position. At this time, the feed holes 3522 on the rotating drum 352 remain above the screening chamber 3521, and the plane of the screening chamber 3521's wall away from the feed holes 3522 remains parallel to the width of the expansion tank 1.

[0084] In this embodiment, the amount of feed stored in the cavity 311 is preferably able to meet the following conditions: when the first stirring member 351 rotates with the stirring tank 31 and moves toward the feed hopper 321, the corresponding rotating cylinder 352 can leave the feed and be located above the feed; when the first stirring member 351 rotates with the stirring tank 31 and moves toward the discharge hopper 322, the corresponding rotating cylinder 352 can completely enter the feed.

[0085] When the rotating cylinder 352 is located in the feed, the feed can enter the screening chamber 3521 through the multiple feed holes 3522; when the rotating cylinder 352 moves away from the feed, most of the feed in the screening chamber 3521 can move along the inclined surface under the action of its own gravity and leave through the discharge port 3524 and merge with the feed in the cavity 311, while a small amount of feed can be partially stuck in the multiple screening troughs 3523 and remain in the screening chamber 3521.

[0086] In this embodiment, the staff can control the second driving member 34 to drive the sleeve 32 to rotate to a suitable angle according to the different components of the feed or the different moisture content of the required feed, so that the feed partially stuck in the screening trough 3523 can move downward along the inclined surface to leave the screening chamber 3521 after fully contacting and reacting with the steam to the required degree, thereby improving the flexibility and functionality of the stirring device 3, enabling it to adapt to more needs and be suitable for different feeds.

[0087] For the feed partially stuck in the sieving trough 3523, when the feed has not fully reacted with the steam, the weight of the feed will be less than a certain value, so that the feed will remain partially stuck in the sieving trough 3523. When the feed has fully reacted with the steam, the weight of the feed will be greater than a certain value, and at this time, under the action of its own gravity, the feed can leave the sieving trough 3523 and move downward along the inclined surface, eventually leaving the discharge port 3524 and falling into the cavity 311 near the lower end of the inclined surface. On this basis, during the rotation of the mixing tank 31, the feed in the cavity 311 can be distributed in a regular manner, with the feed that has fully reacted with the steam near the discharge port 314 and the feed that has not fully reacted with the steam near the feed port 313, thereby facilitating the feed that has fully reacted with the steam to first pass through the feed pipe 7 into the heating space 12 for low-temperature expansion.

[0088] Reference Figure 5 and Figure 6 Furthermore, the stirring device 3 also includes a plurality of vibration components 36, which are distributed and fixedly installed on the plurality of first stirring members 351, and are used to vibrate the rotating cylinder 352 during the rotation of the rotating cylinder 352 relative to the first stirring member 351.

[0089] The vibration assembly 36 includes an elastic member 361 and an impact member 362. The impact member 362 is slidably connected to the first stirring member 351 and can enter and exit the groove 3511 during the sliding process. The elastic member 361 is fixedly installed inside the first stirring member 351. The ends of the elastic member 361 are respectively fixedly connected to the first stirring member 351 and the impact member 362. The elastic member 361 drives the impact member 362 to slide toward the groove 3511. In this embodiment, the elastic member 361 is preferably a compression spring and is located on the side of the impact member 362 that is away from the corresponding groove 3511.

[0090] Correspondingly, the circumferential surface of the rotating drum 352 is uneven, and the impact member 362, under the force of the elastic member 361, maintains contact with the uneven circumferential surface of the rotating drum 352. As the rotating drum 352 rotates relative to the first agitating member 351, the impact member 362 repeatedly slides under the force of the rotating drum 352 and the elastic member 361, thereby vibrating the rotating drum 352. For ease of illustration, the uneven structure on the circumferential surface of the rotating drum 352 is omitted in the drawings.

[0091] When the rotating cylinder 352 is vibrated by the vibration component 36, it is convenient for the feed to enter the screening chamber 3521 through the several feed holes 3522, and it is also convenient for the feed that has fully contacted and reacted with the steam to leave the screening trough 3523. At the same time, it can also have a vibration effect on the feed around the rotating cylinder 352, reducing the probability of the feed sticking to each other, and at the same time, it can expand the gap between the feeds, making it easier for steam to penetrate and fully contact and react with the feed.

[0092] Back to Figure 3 and Figure 4 Furthermore, the stirring device 3 further includes a plurality of second stirring members 37, which are distributed in a circular array around the axis of the stirring tank 31. In this embodiment, the stirring device 3 preferably includes a total of four second stirring members 37, and the second stirring members 37 are preferably sheet-like structures.

[0093] The lengthwise sides of the second stirring members 37 are fixedly connected to the circumferential walls of the cavity 311, and each second stirring member 37 is located between adjacent stirring assemblies 35. The lengthwise direction of the second stirring members 37 is inclined relative to the axis of the mixing tank 31. As the mixing tank 31 is rotated by the first driving member 33, the second stirring members 37 can drive the feed in contact with them toward the feed inlet 313, thereby effectively reducing the probability of feed accumulation and adhesion near the discharge port 314 of the cavity 311, while also ensuring sufficient contact and reaction between the feed and the steam.

[0094] In this embodiment, in order to make the expression clearer, the air vents 312, the feed holes 3522 and the screening trough 3523 are all presented in an enlarged form in the accompanying drawings. In actual applications, the sizes of the air vents 312, the feed holes 3522 and the screening trough 3523 must meet the corresponding functions.

[0095] The implementation principle of the soft pellet shrimp feed production equipment of the present application embodiment is as follows:

[0096] The feed first enters the cavity 311 through the feed pipe 6. Steam is then generated by the steam generator 2 and fed into the clearance space 38. The steam in the clearance space 38 enters the cavity 311 through the plurality of air holes 312, where it uniformly contacts and reacts with the feed in the cavity 311. Simultaneously, the first driving member 33 drives the mixing tank 31 to rotate, thereby uniformly and fully stirring the feed in the cavity 311 and promoting full contact and reaction between the feed and the steam. During the rotation of the mixing tank 31, the mixing assembly 35 can screen the feed in the cavity 311, so that the feed that has fully contacted and reacted with the steam and the feed that has not are distributed in different areas in the cavity 311. This allows the feed that has fully contacted and reacted with the steam to enter the heating space 12 for heating first through the feed pipe 7, while the feed that has not fully contacted and reacted with the steam has more time to continue contacting and reacting with the steam.

[0097] After the feed enters the heating space 12, it is heated by the heating component 41. At the same time, the feeding component 42 drives the feed to move in the heating space 12, so that the feed moves toward the discharge pipe 8 while undergoing low-temperature expansion. Finally, the feed completes low-temperature expansion and can leave the heating space 12 through the discharge pipe 8 and be sent to subsequent feed processing equipment.

[0098] Example 2:

[0099] Reference Figure 2 The present application discloses a production process for soft pellet shrimp feed. Based on the soft pellet shrimp feed production equipment in Example 1, the specific steps are as follows:

[0100] S1. Mix the raw materials evenly and then coarsely grind them.

[0101] The raw materials required for making the feed are weighed according to a certain ratio and mixed evenly, and then the mixture is coarsely crushed using a grinder, and after coarse crushing, it is sieved through a 40-mesh sieve to make large raw materials.

[0102] In this embodiment, the raw materials required for preparing the feed preferably include: fish meal, chicken meal, soybean protein concentrate, fermented soybean meal, corn flour, and fructooligosaccharides.

[0103] S2. The coarsely crushed raw materials and additives are mixed evenly and then ultrafinely crushed.

[0104] The large raw material obtained in S1 is mixed evenly with the additives weighed in a certain ratio, and then the mixture is ultrafinely crushed using a grinder. After ultrafine grinding, the mixture is passed through an 80-mesh sieve to obtain a small raw material.

[0105] In this embodiment, the additives preferably include: a multi-vitamin mixture and a multi-mineral mixture.

[0106] S3. The material obtained after ultrafine grinding is put into the soft particle shrimp feed production equipment for low-temperature puffing and granulation.

[0107] The small raw materials obtained in S2 are fed into the stirring tank 31 through the feed pipe 6 so as to fully contact and react with the steam in the evaporation space; then they are fed into the heating space 12 through the feed pipe 7 and heated by the heating device 4 so as to be puffed at low temperature in the heating space 12. The low-temperature puffed feed is then discharged through the discharge pipe 8.

[0108] S4. Cooling the expanded feed pellets.

[0109] The expanded feed is transported to the next processing equipment and is cooled naturally during transportation.

[0110] S5. Mix the additives evenly and spray them on the surface of the cooled feed particles.

[0111] Extruded feed is produced by weighing a variety of additives in a certain ratio and mixing them evenly. Then, the additives are evenly sprayed onto the surface of the feed particles through a spraying device so that they penetrate into the interior of the feed particles.

[0112] In this embodiment, the additives preferably include: allicin, sardine oil and soybean oil.

[0113] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for producing soft granular shrimp feed, characterized in that: The invention comprises an expansion box (1), a steam generator (2), a stirring device (3) and a heating device (4); the expansion box (1) has a steam space (11) and a heating space (12) inside, the steam space (11) is located above the heating space (12), and the heating device (4) is arranged in the heating space (12); The stirring device (3) comprises a stirring tank (31), a sleeve (32) and a first driving member (33); the stirring tank (31) is located in the steam space (11); the stirring tank (31) has a cavity (311) for holding feed inside; a plurality of air holes (312) are provided on the circumference of the stirring tank (31); and the size of the air holes (312) is smaller than the minimum particle size of the feed; the stirring tank (31) is also provided with a plurality of feed inlets (313) and a plurality of discharge ports (314); the sleeve (32) is located in the steam space (11) and is connected to the expansion box (1); the stirring tank (31) is located inside the sleeve (32); a clearance space (38) is provided between the inner wall of the sleeve (32) and the stirring tank (31); the feed inlet (313) and the discharge port (314) are in communication with the clearance space (38); The steam generator (2) is arranged outside the expansion box (1), and the steam generator (2) is in communication with the clearance space (38); The stirring tank (31) is rotatably connected to the sleeve (32), the first driving member (33) is disposed on the sleeve (32) and connected to the stirring tank (31), the first driving member (33) drives the stirring tank (31) to rotate, and the rotation axis of the stirring tank (31) coincides with the axis of the sleeve (32); The expansion box (1) is provided with a feed pipe (6), a through pipe (7) and a discharge pipe (8), the feed pipe (6) connects the cavity (311) with the outside, the through pipe (7) connects the cavity (311) with the heating space (12), and the discharge pipe (8) connects the heating space (12) with the outside; The stirring device (3) further comprises a plurality of stirring components (35), wherein the stirring components (35) are arranged on the cavity wall of the cavity (311), and the plurality of stirring components (35) are distributed in a circular array with the axis of the stirring tank (31) as the axis; The stirring assembly (35) comprises a first stirring member (351), the first stirring member (351) is provided with a groove (3511), and the opening direction of the groove (3511) is the same as the direction in which the first stirring member (351) moves as the stirring tank (31) rotates. The stirring assembly (35) further comprises a rotating cylinder (352), the rotating cylinder (352) being located in the groove (3511), the rotating cylinder (352) being rotatably connected to the first stirring member (351), and the rotation axis of the rotating cylinder (352) being parallel to the rotation axis of the stirring tank (31); The rotating cylinder (352) has a screening cavity (3521) inside, and a plurality of feed holes (3522) for feeding individual feed particles into the screening cavity (3521) are provided on one side of the rotating cylinder (352). The rotating cylinder (352) has a plurality of screening slots (3523) adapted to the feed particles on a cavity wall of the screening cavity (3521) away from the feed holes (3522). The rotating cylinder (352) also has a discharge port (3524) at one end close to the feed pipe (7). The center of gravity of the rotating cylinder (352) is eccentrically arranged, and under the action of its own gravity, the rotating cylinder (352) can keep the screening trough (3523) located below the feeding hole (3522).

2. The equipment for producing soft granular shrimp feed according to claim 1, characterized in that: The sleeve (32) is arranged obliquely in the steam space (11); the steam generator (2) is communicated with the cavity (311) at a position close to the oblique upper end of the sleeve (32); and the feed pipe (7) is communicated with the cavity (311) at a position close to the oblique lower end of the sleeve (32).

3. The equipment for producing soft granular shrimp feed according to claim 1, characterized in that: The stirring device (3) further comprises a plurality of vibration components (36), wherein the vibration components (36) are arranged on the first stirring member (351), and the vibration components (36) comprise an elastic member (361) and an impact member (362), wherein the impact member (362) is slidably connected to the first stirring member (351), and the elastic member (361) drives the impact member (362) to slide in a direction close to the rotating cylinder (352); the outer surface of the rotating cylinder (352) is uneven, and the elastic member (361) drives the impact member (362) to maintain contact with the outer surface of the rotating cylinder (352).

4. The equipment for producing soft granular shrimp feed according to claim 1, characterized in that: The stirring device (3) further comprises a plurality of second stirring members (37), the second stirring members (37) being arranged in the cavity (311) and connected to the cavity wall of the cavity (311), and the second stirring members (37) being located between adjacent stirring assemblies (35); the second stirring members (37) being arranged obliquely relative to the axis of the stirring tank (31), and during the rotation of the stirring tank (31), the second stirring members (37) drive the feed in the cavity (311) to move in a direction close to the steam generator (2).

5. The equipment for producing soft granular shrimp feed according to claim 2, characterized in that: The heating device (4) comprises a heating component (41) and a feeding component (42), wherein the heating component (41) is located in the heating space (12); the feeding component (42) comprises a third driving member (422) and a spiral piece (421), wherein the spiral piece (421) is rotatably connected to the expansion box (1), and the third driving member (422) is arranged on the expansion box (1) and drives the spiral piece (421) to rotate, and the rotation of the spiral piece (421) drives the feed in the heating space (12) to move toward the discharge pipe (8).

6. The equipment for producing soft granular shrimp feed according to claim 2, characterized in that: The sleeve (32) is rotatably connected to the expansion box (1), and the rotation axis of the sleeve (32) is perpendicular to its own axis; the stirring device (3) also includes a second driving member (34), the second driving member (34) is arranged on the expansion box (1), and the second driving member (34) drives the sleeve (32) to rotate.

7. A process for producing soft granular shrimp feed, characterized in that: Based on the soft pellet shrimp feed production equipment according to any one of claims 1 to 6, the specific steps are as follows: S1, mixing the raw materials and then coarsely crushing them; S2, mixing the coarsely pulverized raw materials and additives uniformly and then ultrafine grinding; S3, putting the material obtained after ultrafine grinding into the soft granule shrimp feed production equipment for low-temperature puffing and granulation; S4, cooling the expanded feed pellets; S5. Mix the additives evenly and spray them on the surface of the cooled feed particles.

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