A method for producing feed for freshwater fish and a device therefor

Abstract

The present application relates to the technical field of livestock breeding equipment, and discloses a production method and device for freshwater fish feed, which comprises a material cylinder, a material distribution groove is fixed in the material cylinder, the material distribution groove divides the material cylinder into a material pressing cavity and a water storage cavity, a plurality of water permeation pipes with cavities are connected between the top plate of the material cylinder and the material distribution groove, a plurality of water permeation holes are arranged on the pipe wall of the water permeation pipes, a first water outlet hole corresponding to the number of the water permeation pipes and communicating with the cavities of the water permeation pipes is arranged on the material distribution groove, a material pressing cylinder is mounted outside the top plate of the material cylinder, and a material pressing plate is fixed on the output end of the material pressing cylinder and slides in the material cylinder. The present application has the following advantages and effects: a plurality of water permeation cylinders are arranged inside, and the material is discharged through the inclined arrangement mode, so that the device of the present application can adapt to the production of a large batch of fish feed, and the dehydration of the material in each part is uniform and consistent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of livestock breeding equipment, in particular to a production method and device for freshwater fish feed. BACKGROUND

[0002] With the improvement of living standards and the rapid development of aquaculture, the market demand for aquatic products continues to grow, driving the demand for aquatic feed to rise significantly. In the field of freshwater fish farming, feed must meet the dual requirements of fish nutritional needs and cost control. Currently, the mainstream freshwater fish feed uses fish meal and soybean meal as the main raw materials, but due to the continuous rise in the price of raw materials, the cost of feed production is rising, which is a heavy economic burden for farmers.

[0003] Kitchen waste shows potential to replace some high-priced raw materials due to its rich nutritional content. Its composition includes rice and flour residues, vegetables, animal and plant oils, and meat and bones, which are rich in nutrients such as starch, cellulose, protein, lipids, and inorganic salts, and can effectively supplement the protein, vitamins, and minerals (such as calcium, magnesium, potassium, iron, and other trace elements) needed for the growth of freshwater fish. However, the high water content of kitchen waste poses a significant technical bottleneck in its application as feed: materials that have not been fully dehydrated are difficult to form ideal particle size feed particles, and even if they are sorted using patented technology (such as the CN217747301U feed screening device for aquaculture), the residual water will cause the particle size to be too large, ultimately resulting in a decrease in the yield of finished products.

[0004] Existing dehydration technologies also face challenges. For example, the CN103557677A feed mixture dehydration device uses a bottom-up low-pressure dehydration method, which can overflow the surrounding water, but has problems such as uneven dehydration in the center area and material clumping, so the cross-sectional area of the device cannot be too large and can only be used for large-scale production. At the same time, only the bottom of the device can handle high water content in the raw materials, as a large amount of water moves towards the drainage groove first, which can cause too much sediment at the liquid outlet, reducing the pressing effect and speed. These technical defects not only affect the smoothness of the discharge, but also adversely affect subsequent processing procedures such as ingredient mixing, and also affect the production scale, or multiple dehydration devices need to be used simultaneously. SUMMARY

[0005] The purpose of the present application is to provide a production method and device for freshwater fish feed, which can adapt to the production of a large batch of fish feed by setting multiple water-permeable cylinders inside and discharging the material through an inclined arrangement, and the dehydration of the material in each part is uniform.

[0006] The technical problem of the present application is solved by the following technical scheme: a device for producing freshwater fish feed, comprising a barrel, a distribution groove fixed in the barrel, the distribution groove dividing the barrel into a pressing cavity and a water storage cavity, a plurality of water permeation pipes with cavities inside connected between the top plate of the barrel and the distribution groove, a plurality of water permeation holes provided on the pipe wall of the water permeation pipe, a first water outlet hole corresponding to the number of the water permeation pipes and communicating with the cavities inside the water permeation pipes provided on the distribution groove, a pressing air cylinder mounted outside the top plate of the barrel, an output end of the pressing air cylinder fixed with a pressing plate sliding in the barrel, a through hole corresponding to the number of the water permeation pipes and allowing the water permeation pipe to pass through provided on the pressing plate, and an inlet communicating with the pressing cavity and an outlet communicating with the water storage cavity provided on the barrel.

[0007] By the above technical scheme, the material is put into the barrel through the inlet, the pressing plate is driven by the pressing air cylinder to move downward to press the material, the water in the material is gradually permeated into the water permeation pipe through the water permeation hole, and flows into the water storage cavity through the first water outlet hole to complete the dehydration of the material in the barrel; a plurality of water permeation pipes are provided in the barrel to provide a direct discharge channel for the water, which can improve the pressing speed, shorten the dehydration time, and the large cross section of the container does not affect the pressing effect, and the water in each part can be uniformly discharged to avoid uneven dehydration in the central area, material clumping and other problems, and is suitable for industrialized processing of large quantities of fish feed.

[0008] Further provided in the present application is that the distribution groove is provided in an inverted conical shape, a discharge channel penetrating through the water storage cavity and extending out of the barrel is fixedly communicated in the middle of the distribution groove, a rotating shaft is rotatably installed in the discharge channel, a spiral blade is fixed on the rotating shaft, a discharge motor driving the rotating shaft to rotate is fixedly installed at the bottom of the discharge channel, a discharge outlet communicating with the inside of the discharge channel is provided on the discharge channel, and a discharge groove is fixed at the discharge outlet.

[0009] By the above technical scheme, the inverted conical distribution groove facilitates guiding the material into the discharge channel, the discharge motor is started to drive the rotating shaft and the spiral blade to rotate, the material guided into the discharge channel is discharged from the discharge outlet, the material can be discharged quickly, and the material is discharged completely with less residue.

[0010] Further provided in the present application is that the rotating shaft is fixed with a discharge plate in the pressing cavity at the upper end of the rotating shaft, and the length of the discharge plate is longer than the length of the spiral blade.

[0011] By the above technical scheme, the material around the distribution groove is swept by the discharge plate and falls on the spiral blade during the rotation of the rotating shaft, and the material is discharged from the discharge outlet by the spiral blade.

[0012] The further arrangement of the present application is that the water permeation pipe comprises a first pipe element fixed at the upper end of the material cylinder and a second pipe element slidingly connected to the lower end of the first pipe element, the first water outlet hole has a smaller diameter than the cross-sectional diameter of the second pipe element, so that the bottom end surface of the second pipe element can abut against the upper end surface of the material distribution groove to cover the first water outlet hole, a lifting assembly is arranged between the pressing plate and the second pipe element to drive the second pipe element to ascend and descend, a material separation groove is rotatably connected in the material cylinder and located at the bottom of the material distribution groove and abutting against the bottom end surface of the material distribution groove, the material separation groove is provided with a number of second water outlet holes corresponding to the number of the first water outlet holes, and the material cylinder is provided with a control assembly to drive the material separation groove to rotate.

[0013] By adopting the above technical scheme, during the pressing and draining operation, the control assembly controls the material separation groove to rotate so that the second water outlet hole is aligned with the first water outlet hole, the first water outlet hole is communicated with the inside of the water storage cavity, that is, the internal cavity of the water permeation pipe is communicated with the water storage cavity, the pressing plate moves downward to press the water in the material, the water permeates into the water permeation pipe through the water permeation hole and is then discharged into the water storage cavity through the first water outlet hole; after the pressing and draining operation is completed, during the material discharging operation, the control assembly controls the material separation groove to rotate so that the first water outlet hole is misaligned with the second water outlet hole, the first water outlet hole is no longer communicated with the inside of the water storage cavity, the pressing chamber is closed, the pressing plate moves upward and is driven by the lifting assembly to drive the second pipe element to move away from the material distribution groove, the discharging motor is started to drive the rotating shaft and the spiral blade to rotate to discharge the material, at this time, the bottom end of the water permeation pipe (i.e. the second pipe element) does not hinder the material from falling into the discharging channel and being discharged, and the material discharging efficiency is further improved.

[0014] The further arrangement of the present application is that the material separation groove is fixed with a sleeve which is sleeved outside the discharging channel and is rotatably connected to the material cylinder, the bottom end of the sleeve extends out of the material cylinder, the control assembly comprises a first gear fixed at the bottom end of the sleeve, and a control motor is fixedly installed outside the bottom of the material cylinder, and the output end of the control motor is fixed with a second gear which is engaged with the first gear.

[0015] By adopting the above technical scheme, the control motor is started to drive the second gear to rotate, the second gear drives the sleeve and the material separation groove to rotate through the first gear, and then the first water outlet hole is aligned with the second water outlet hole to make the internal cavity of the water permeation pipe communicated with the water storage cavity, or the first water outlet hole is misaligned with the second water outlet hole to make the internal cavity of the water permeation pipe disconnected with the water storage cavity.

[0016] The further arrangement of the present application is that the discharging channel is provided with a plurality of first water discharge holes located in the water storage cavity, and the sleeve is provided with a plurality of second water discharge holes corresponding to the number of the first water discharge holes and located in the water storage cavity.

[0017] By adopting the technical scheme, when the squeezing and draining work is performed, the control assembly controls the rotation of the material separation groove and the sleeve, the first water outlet hole is aligned with the second water outlet hole, and the first water outlet hole is offset from the second water outlet hole; when the material discharging work is performed, the material separation groove and the sleeve rotate, the first water outlet hole is offset from the second water outlet hole, and the first water outlet hole is aligned with the second water outlet hole, so that residual moisture in the material can be further discharged when the material is discharged from the discharging channel, and the dehydration efficiency is improved.

[0018] Further, the lifting assembly comprises a connecting piece sleeved and sliding in the first pipe, a connecting rod fixed between the connecting piece and the second pipe, a lifting block fixed at an end of the connecting piece away from the connecting rod, the lifting block being in the shape of a circular truncated cone, long sliding holes arranged on both sides of the first pipe, an inner sliding groove arranged opposite the long sliding holes on both sides of the pressing plate, a fixed plate fixed in the inner sliding groove, a first guide rod inserted and sliding in the fixed plate, a wedge-shaped block fixed at an end of the first guide rod close to the long sliding hole and extending into the inner cavity of the first pipe and abutting against the bottom end surface of the lifting block, and a first compression spring sleeved outside the first guide rod and fixed between the wedge-shaped block and the fixed plate.

[0019] Further, the lifting assembly comprises a connecting piece sleeved and sliding in the first pipe, a connecting rod fixed between the connecting piece and the second pipe, a lifting block fixed at an end of the connecting piece away from the connecting rod, the lifting block being in the shape of a circular truncated cone, long sliding holes arranged on both sides of the first pipe, an inner sliding groove arranged opposite the long sliding holes on both sides of the pressing plate, a fixed plate fixed in the inner sliding groove, a first guide rod inserted and sliding in the fixed plate, a wedge-shaped block fixed at an end of the first guide rod close to the long sliding hole and extending into the inner cavity of the first pipe and abutting against the bottom end surface of the lifting block, and a first compression spring sleeved outside the first guide rod and fixed between the wedge-shaped block and the fixed plate.

[0020] Further, the second guide rod is arranged to extend into the inner cavity of the first pipe, the bottom end of the second guide rod is fixed to the pressing plate abutting against the upper end surface of the lifting block, and the second compression spring is sleeved outside the second guide rod and fixed between the pressing plate and the inner wall of the barrel.

[0021] Further, the lifting assembly comprises a connecting piece sleeved and sliding in the first pipe, a connecting rod fixed between the connecting piece and the second pipe, a lifting block fixed at an end of the connecting piece away from the connecting rod, the lifting block being in the shape of a circular truncated cone, long sliding holes arranged on both sides of the first pipe, an inner sliding groove arranged opposite the long sliding holes on both sides of the pressing plate, a fixed plate fixed in the inner sliding groove, a first guide rod inserted and sliding in the fixed plate, a wedge-shaped block fixed at an end of the first guide rod close to the long sliding hole and extending into the inner cavity of the first pipe and abutting against the bottom end surface of the lifting block, and a first compression spring sleeved outside the first guide rod and fixed between the wedge-shaped block and the fixed plate.

[0022] Further, the water seepage hole is in the shape of a conical hole with an outer diameter smaller than an inner diameter.

[0023] Further, the water seepage hole is in the shape of a conical hole with an outer diameter smaller than an inner diameter.

[0024] The application further discloses a production method of the feed for freshwater fish, and the production method comprises the following steps.

[0025] S1: first, the raw materials are put into the barrel through the feed inlet, the pressing plate is driven downward by the pressing cylinder to press the raw materials, and the moisture in the raw materials is discharged from the water permeation pipe;

[0026] S2: after the pressing and liquid discharge are completed, the control assembly is started to drive the material separation groove to rotate, so that the second water outlet hole on the material separation groove is staggered with the first water outlet hole, and the channel between the first water outlet hole and the water storage cavity is closed;

[0027] S3: the pressing plate is driven upward to reset by the pressing cylinder, and the second pipe is lifted by the lifting assembly, and the bottom end of the second pipe is separated from the material separation groove;

[0028] S4: the discharge motor is started to drive the rotating shaft and the spiral blade to rotate, and the materials in the barrel are sent out from the discharge channel.

[0029] The beneficial effects of the present application are:

[0030] 1. The pressing plate moves downward to press the material, so that the moisture in the material gradually permeates into the water permeation pipe through the water permeation hole, and flows into the water storage cavity through the first water outlet hole. Multiple water permeation pipes are arranged in the barrel to provide a direct discharge channel for the moisture, which can improve the pressing speed and shorten the dehydration time. Moreover, the large cross section of the container does not affect the pressing effect, and the moisture in each part can be uniformly discharged, avoiding problems such as uneven dehydration in the central area and material clumping. The present application is suitable for industrial processing of large quantities of fish feed.

[0031] 2. The inverted conical material separation groove facilitates the introduction of materials into the discharge channel. By starting the discharge motor, the discharge motor drives the rotating shaft and the spiral blade to rotate, discharging the materials introduced into the discharge channel from the discharge port, so that the materials can be discharged quickly and completely, with less residual material.

[0032] 3. During the rotation of the rotating shaft, the discharge plate sweeps the materials around the material separation groove to fall onto the spiral blade, and the materials are discharged from the discharge port by the spiral blade.

[0033] 4. The pressing plate moves upward and the second pipe is separated from the material separation groove by the lifting assembly. The discharge motor drives the rotating shaft and the spiral blade to rotate to discharge the materials. At this time, the bottom end of the water permeation pipe (i.e. the second pipe) does not hinder the materials from falling into the discharge channel and being discharged, further improving the material discharge efficiency.

[0034] 5. During the material discharge operation, the material separation groove and the sleeve rotate, the first water outlet hole is staggered with the second water outlet hole, and the first water outlet hole is aligned with the second water outlet hole, so that the residual moisture in the materials can be further discharged when the materials are discharged from the discharge channel, further improving the dehydration efficiency.

[0035] 6、Multiple water seepage holes can well discharge the internal water under the state of pressure, and the water seepage holes are set to have an outer hole diameter smaller than an inner hole diameter, so that the particles can be prevented from being discharged from the water seepage holes, and the probability of the water seepage holes being blocked can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0037] Figure 1 is a structural schematic diagram of the present application.

[0038] Figure 2 is a schematic diagram of the connection relationship between the water seepage pipe and the distribution chute in the present application.

[0039] Figure 3 is a sectional structural schematic diagram of the present application.

[0040] Figure 4 is Figure 3 an enlarged view of A in FIG.

[0041] Figure 5 is Figure 3 an enlarged view of B in FIG.

[0042] In the drawings, 1 is a barrel, 2 is a distribution chute, 3 is a pressure chamber, 4 is a water storage chamber, 5 is a water seepage pipe, 51 is a first pipe piece, 52 is a second pipe piece, 6 is a water seepage hole, 7 is a first water outlet hole, 8 is a pressure cylinder, 9 is a pressure plate, 10 is a through hole, 11 is an inlet, 12 is a water outlet, 13 is an outlet channel, 14 is a rotating shaft, 15 is a helical blade, 16 is an outlet motor, 17 is an outlet, 18 is an outlet chute, 19 is an outlet plate, 20 is a lifting assembly, 201 is a connecting piece, 202 is a connecting rod, 203 is a lifting block, 204 is a long sliding hole, 205 is an inner sliding groove, 206 is a fixed plate, 207 is a first guide rod, 208 is a wedge-shaped block, 209 is a first compression spring, 21 is a material separation groove, 22 is a second water outlet hole, 23 is a control assembly, 231 is a first gear, 232 is a control motor, 233 is a second gear, 24 is a sleeve, 25 is a first drainage hole, 26 is a second guide rod, 27 is a pressure plate, and 28 is a second compression spring. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] Example 1: A production apparatus for freshwater fish feed, such as... Figures 1-3 As shown, the device includes a material cylinder 1, inside which a distribution trough 2 is fixed. The distribution trough 2 divides the material cylinder 1 into a pressing chamber 3 and a water storage chamber 4. Multiple hollow water-permeable pipes 5 are connected between the top plate of the material cylinder 1 and the distribution trough 2. Each water-permeable pipe 5 has multiple water-permeable holes 6 on its wall, with the diameter of the holes 6 preferably between 0.5 mm and 3 mm. The multiple water-permeable holes 6 effectively discharge water under pressure and prevent particles from being discharged through the holes 6. The distribution trough 2 has a corresponding number of first water outlet holes 7 that communicate with the hollow interior of each water-permeable pipe 5. A pressing cylinder 8 is installed outside the top plate of the material cylinder 1. The output end of the pressing cylinder 8 is fixed to a sliding valve inside the material cylinder 1. The pressing plate 9 has a number of through holes 10 corresponding to the number of seepage pipes 5 for the seepage pipes 5 to pass through. The material cylinder 1 is provided with an inlet 11 that connects to the pressing chamber 3 and an outlet 12 that connects to the water storage chamber 4. The material is fed into the material cylinder 1 through the inlet 11. The pressing cylinder 8 drives the pressing plate 9 to move downward to press the material, so that the water in the material gradually seeps into the seepage pipes 5 through the seepage holes 6 and flows into the water storage chamber 4 through the first outlet hole 7, completing the dehydration of the material in the material cylinder 1. Furthermore, the outlet 12 is connected to the outlet pipe, and a valve is installed in the outlet pipe. After the drainage work is completed, the valve is opened to drain the water in the water storage chamber 4. When the pressing plate 9 moves, the upper end of the seepage pipe 5 passes through the through hole 10 and does not move.

[0045] like Figures 3-4 As shown, the material distribution trough 2 is configured as an inverted cone shape. A discharge channel 13, which passes through the water storage chamber 4 and extends out of the material cylinder 1, is fixedly connected to the middle of the material distribution trough 2. A rotating shaft 14 is rotatably installed inside the discharge channel 13, and a spiral blade 15 is fixed on the rotating shaft 14. A discharge motor 16, which drives the rotating shaft 14 to rotate, is fixedly installed at the bottom of the discharge channel 13. The discharge channel 13 is provided with a discharge port 17 that connects to the inside of the discharge channel 13. A discharge trough 18 is fixed at the discharge port 17. The discharge trough 18 is preferably set at an inclination to prevent material from clogging the discharge port 17. The inverted cone-shaped material distribution trough 2 facilitates the introduction of material into the discharge channel 13. By starting the discharge motor 16, the discharge motor 16 drives the rotating shaft 14 and the spiral blade 15 to rotate, and the material introduced into the discharge channel 13 is discharged from the discharge port 17, so that the material can be discharged quickly. Furthermore, multiple uniform rods can be set on the rotating shaft 14 to further mix the material during the discharge process.

[0046] likeFigures 1-3 As shown, the upper end of the rotating shaft 14 is fixed with a discharge plate 19 located in the material pressing cavity 3, the length of the discharge plate 19 is longer than the length of the spiral blade 15, during the rotation of the rotating shaft 14, the discharge plate 19 can sweep the material around the distribution groove 2 to make it fall on the spiral blade 15, and then the material is discharged from the discharge port 17 through the spiral blade 15.

[0047] As shown in Figure 2 , 3 , 5, the water seepage pipe 5 includes a first pipe 51 fixed on the barrel 1 at the upper end and a second pipe 52 slidingly connected to the lower end of the first pipe 51, the diameter of the second pipe 52 is slightly smaller than the diameter of the first pipe 51, and the inner wall of the first pipe 51 is provided with a sliding groove between adjacent water seepage holes 6, the outer wall surface of the second pipe 52 is fixed with a sliding block embedded in the sliding groove for sliding, which allows the second pipe 52 to stably slide up and down at the lower end of the first pipe 51 while limiting the rotation of the second pipe 52 relative to the first pipe 51, the diameter of the first water outlet hole 7 is smaller than the cross-sectional diameter of the second pipe 52, so that the bottom end surface of the second pipe 52 can cover the first water outlet hole 7 with the upper end surface of the distribution groove 2, and the bottom end surface of the second pipe 52 is provided as a bevel surface that can be in close contact with the upper end surface of the distribution groove 2, a lifting assembly 20 is arranged between the second pipe 52 and the pressing plate 9 to drive the second pipe 52 to lift, a partition groove 21 is rotatably connected in the barrel 1 and in close contact with the bottom end surface of the distribution groove 2, the partition groove 21 is provided with a second water outlet hole 22 corresponding to the number of first water outlet holes 7, the barrel 1 is provided with a control assembly 23 to drive the rotation of the partition groove 21, during the pressing and draining work, the control assembly 23 controls the rotation of the partition groove 21 to align the second water outlet hole 22 with the first water outlet hole 7, the first water outlet hole 7 is in communication with the inside of the water storage cavity 4, that is, the internal cavity of the water seepage pipe 5 is in communication with the water storage cavity 4, the pressing plate 9 moves downward to press the water in the material, the water seeps into the water seepage pipe 5 through the water seepage holes 6 and is then discharged to the water storage cavity 4 through the first water outlet hole 7; after the pressing and draining work is completed, during the material discharging work, the control assembly 23 controls the rotation of the partition groove 21 to misalign the first water outlet hole 7 with the second water outlet hole 22, the first water outlet hole 7 is no longer in communication with the inside of the water storage cavity 4, the material pressing cavity 3 is closed, the pressing plate 9 moves upward and the second pipe 52 is driven by the lifting assembly 20 to move away from the distribution groove 2, the discharge motor 16 is started to drive the rotating shaft 14 and the spiral blade 15 to rotate to discharge the material, at this time, the bottom end of the water seepage pipe 5 (i.e. the second pipe 52) does not hinder the material from falling into the discharge channel 13 and being discharged.

[0048] As shown in Figures 1-3As shown, the material separation groove 21 is fixed with a sleeve 24 sleeved outside the discharging channel 13 and rotationally connected to the barrel 1, the sleeve 24 extends out of the barrel 1 at the bottom end, the control assembly 23 comprises a first gear 231 fixed at the bottom end of the sleeve 24, a control motor 232 is fixedly installed outside the bottom of the barrel 1, the control motor 232 is fixed with a second gear 233 engaged with the first gear 231 at the output end, by starting the control motor 232, the control motor 232 drives the second gear 233 to rotate, the second gear 233 drives the sleeve 24 and the material separation groove 21 to rotate through the first gear 231, thereby controlling the first water outlet hole 7 to align the second water outlet hole 22 to make the internal cavity of the water permeation pipe 5 communicate with the water storage cavity 4, or the first water outlet hole 7 is misaligned with the second water outlet hole 22 to make the internal cavity of the water permeation pipe 5 disconnected with the water storage cavity 4.

[0049] As a further scheme of the present application, the discharging channel 13 is provided with a plurality of first water drainage holes 25 located in the water storage cavity 4, the sleeve 24 is provided with a plurality of second water drainage holes corresponding to the number of the first water drainage holes 25 located in the water storage cavity 4, during the water drainage work of the press, the control assembly 23 controls the rotation of the material separation groove 21 and the sleeve 24, the first water outlet hole 7 aligns with the second water outlet hole 22, while the first water drainage hole 25 misaligns with the second water drainage hole; during the material discharging work, the material separation groove 21 and the sleeve 24 rotate, the first water outlet hole 7 misaligns with the second water outlet hole 22, while the first water drainage hole 25 aligns with the second water drainage hole, so that the residual moisture in the material can be further discharged when the material is discharged from the discharging channel 13, and the dehydration efficiency is improved.

[0050] As shown, Figure 3 , 5As shown, the lifting assembly 20 comprises a connecting piece 201 sleeved and sliding in the first pipe 51, a connecting rod 202 fixed between the connecting piece 201 and the second pipe 52, the connecting rod 202 preferably located between adjacent water permeable holes 6 and having a width smaller than the distance between adjacent water permeable holes 6 to avoid hindering water drainage, the connecting piece 201 fixed with a lifting block 203 at an end away from the connecting rod 202, the lifting block 203 in a circular truncated cone shape to reduce friction between the lifting block 203 and the inner wall of the first pipe 51 and to better contact the wedge-shaped block 208, the first pipe 51 provided with long sliding holes 204 on both sides, the pressing plate 9 provided with inner sliding grooves 205 opposite to the long sliding holes 204, the inner sliding grooves 205 fixed with fixed plates 206, the fixed plates 206 inserted and sliding with first guide rods 207, the first guide rods 207 fixed with wedge-shaped blocks 208 at an end close to the long sliding holes 204, the wedge-shaped blocks 208 having a slanted end surface to extend into the inner cavity of the first pipe 51 through the long sliding holes 204 and to be in close contact with the bottom end surface of the lifting block 203, the wedge-shaped blocks 208 fixed with first compression springs 209 sleeved on the first guide rods 207 between one end of the inner sliding grooves 205 and the fixed plates 206; when the pressing plate 9 is above the barrel 1, the wedge-shaped blocks 208 extend into the inner cavity of the first pipe 51 through the long sliding holes 204 under the pushing of the first compression springs 209 and are in close contact with the bottom end surface of the lifting block 203; when the pressing plate 9 moves downward under the pushing of the pressing air cylinder 8, the first pipe 51 does not move, while the lifting block 203, the connecting piece 201, the connecting rod 202 and the second pipe 52 also move downward under the gravity, until the bottom end of the second pipe 52 abuts against the upper end surface of the distribution groove 2 and cannot move downward any more, at this time, the inner cavities of the first pipe 51 and the second pipe 52 are communicated with the first water outlet hole 7 and the second water outlet hole 22, i.e. the water permeable holes 6 are communicated with the water storage cavity 4, then the pressing plate 9 continuously presses downward to start extruding the material and carrying out material drainage work, so that the water in the material flows into the water storage cavity 4 from the water permeable holes 6, during the continuous pressing process of the pressing plate 9, the wedge-shaped blocks 208 move into the sliding grooves under the hindering of the connecting piece 201 and the pipe wall of the second pipe 52, so that the inner wall surface of the through hole 10 is in close contact with the outer wall surface of the first pipe 51 to avoid water seeping from the through hole 10, and the pressing plate 9 finally descends to be close to the bottom end of the first pipe 51; after the drainage work is completed, the pressing air cylinder 8 drives the pressing plate 9 to move upward from the bottom end of the first pipe 51, when the pressing plate 9 moves to be close to the long sliding holes 204, the wedge-shaped blocks 208 extend into the inner cavity of the first pipe 51 through the long sliding holes 204 again, until the upper end surface of the wedge-shaped blocks 208 is in close contact with the bottom end surface of the lifting block 203, the pressing plate 9 continuously rises to lift the lifting block 203, the connecting piece 201, the connecting rod 202 and the second pipe 52 upward, until the bottom end of the second pipe 52 is away from the distribution groove 2, at this time, the first water outlet hole 7 is misaligned with the second water outlet hole 22, the pressing cavity 3 is closed, then the discharging motor is started to carry out material discharging work.

[0051] As Figure 5As shown, the second guide rod 26 at the top of the barrel 1 slides into the inner cavity of the first pipe 51, the bottom end of the second guide rod 26 is fixed with a pressing plate 27 which is attached to the upper end surface of the lifting block 203, the second compression spring 28 is fixed outside the second guide rod 26 between the pressing plate 27 and the inner wall of the barrel 1, so that when the pressing plate 9 moves downward, the lifting block 203, the connecting piece 201, the connecting rod 202 and the second pipe 52 move downward under the weight and are pushed downward by the second compression spring 28, and when the lower end of the second pipe 52 abuts against the upper end surface of the distribution tank 2, the second pipe 52 cannot move downward any more, and when the drainage work is performed, the second pipe 52 remains stable under the extrusion of the second compression spring 28, avoiding the up-and-down shaking of the second pipe 52; when the pressing plate 9 rises, the lifting block 203 lifts and extrudes the second compression spring 28, and the second compression spring 28 is compressed; the first guide rod 207 is fixed with a limiting block at the end away from the wedge-shaped block 208, and the second guide rod 26 is fixed with a limiting block at the end away from the pressing plate 27, avoiding the disengagement of the first guide rod 207 from the fixed plate 206 or the disengagement of the second guide rod 26 from the barrel 1.

[0052] As a further scheme of the present application, the water seepage hole 6 is designed as a conical hole with an outer diameter smaller than an inner diameter, for example, the outer diameter (the outer surface of the water seepage cylinder 2) is 1 mm and the inner diameter (the side of the inner cavity of the water seepage cylinder 2) is 3 mm, which is beneficial to drainage and can reduce the probability of the water seepage pipe 5 being blocked; further, the first drainage hole 25 and the second drainage hole can also be designed as conical holes with an outer diameter smaller than an inner diameter, further reducing the probability of being blocked.

[0053] The present application also provides a production method of the feed for freshwater fish, which uses the above-mentioned production device of the feed for freshwater fish, and the working process is as follows.

[0054] S1: first, the raw materials are put into the barrel 1 through the feeding port 11, the pressing plate 9 is driven downward by the pressing air cylinder 8 to press the raw materials, and the water in the raw materials is drained from the water seepage pipe 5;

[0055] S2: after the pressing and liquid discharge are completed, the control assembly 23 is started to drive the material separation groove 21 to rotate, so that the second water outlet hole 22 on the material separation groove 21 is staggered with the first water outlet hole 7, and the channel between the first water outlet hole 7 and the water storage cavity 4 is closed;

[0056] S3: the pressing plate 9 is lifted and reset by starting the pressing air cylinder, and the second pipe 52 is lifted by the lifting assembly 20, and the bottom end of the second pipe 52 is away from the distribution tank 2;

[0057] S4: the discharge motor 16 is started to drive the rotating shaft 14 and the spiral blade 15 to rotate, and the materials in the barrel 1 are sent out from the discharge channel 13.

Claims

1. A device for the production of feed for freshwater fish, comprising a cartridge (1), characterised in that: The barrel (1) is fixed with a distribution groove (2), the distribution groove (2) divides the barrel (1) into a pressing cavity (3) and a water storage cavity (4) from top to bottom, a plurality of water seepage pipes (5) with cavities are connected between the top plate of the barrel (1) and the distribution groove (2), a plurality of water seepage holes (6) are arranged on the pipe wall of the water seepage pipe (5), a first water outlet hole (7) corresponding to the number of the water seepage pipe (5) and communicating with the cavity of the water seepage pipe (5) is arranged on the distribution groove (2), a pressing air cylinder (8) is installed outside the top plate of the barrel (1), the output end of the pressing air cylinder (8) is fixed with a pressing plate (9) sliding in the barrel (1), a plurality of through holes (10) corresponding to the number of the water seepage pipe (5) and allowing the water seepage pipe (5) to pass through are arranged on the pressing plate (9), the barrel (1) is provided with an inlet (11) communicating with the pressing cavity (3) and a water outlet (12) communicating with the water storage cavity (4), the distribution groove (2) is arranged in an inverted conical shape, a discharge channel (13) penetrating through the water storage cavity (4) and extending out of the barrel (1) is fixed and communicated in the middle of the distribution groove (2), a rotating shaft (14) is rotatably installed in the discharge channel (13), a spiral blade (15) is fixed on the rotating shaft (14), a discharge motor (16) driving the rotating shaft (14) to rotate is fixedly installed at the bottom of the discharge channel (13), the discharge channel (13) is provided with a discharge outlet (17) communicating with the inside of the discharge channel (13), a discharge groove (18) is fixed at the discharge outlet (17), the water seepage pipe (5) comprises a first pipe (51) fixed at the upper end of the barrel (1) and a second pipe (52) slidingly connected to the lower end of the first pipe (51), the diameter of the first water outlet hole (7) is smaller than the cross-sectional diameter of the second pipe (52), so that the bottom end surface of the second pipe (52) can abut against the upper end surface of the distribution groove (2) to cover the first water outlet hole (7), a lifting assembly (20) driving the second pipe (52) to lift is arranged between the pressing plate (9) and the second pipe (52), a separation groove (21) is rotatably connected in the barrel (1) and abuts against the bottom end surface of the distribution groove (2), the separation groove (21) is provided with a second water outlet hole (22) corresponding to the number of the first water outlet hole (7), the barrel (1) is provided with a control assembly (23) driving the separation groove (21) to rotate, the separation groove (21) is fixed with a sleeve (24) sleeved outside the discharge channel (13) and rotatably connected to the barrel (1), the bottom end of the sleeve (24) extends out of the barrel (1), the control assembly (23) comprises a first gear (231) fixed at the bottom end of the sleeve (24), a control motor (232) is fixedly installed outside the bottom of the barrel (1), the output end of the control motor (232) is fixed with a second gear (233) meshing with the first gear (231).

2. A device for producing feed for freshwater fish according to claim 1, characterized in that: The rotation shaft (14) is fixed with a discharging plate (19) in the pressing cavity (3), and the length of the discharging plate (19) is longer than that of the spiral blade (15).

3. A device for producing feed for freshwater fish according to claim 1, characterized in that: The discharging channel (13) is provided with a plurality of first drainage holes (25) in the water storage cavity (4), and the sleeve (24) is provided with a plurality of second drainage holes corresponding to the number of the first drainage holes (25) in the water storage cavity (4).

4. A device for producing feed for freshwater fish according to claim 1, characterized in that: The lifting assembly (20) comprises a connecting piece (201) sleeved and sliding in the first pipe (51), a connecting rod (202) fixed between the connecting piece (201) and the second pipe (52), a lifting block (203) fixed at one end of the connecting piece (201) away from the connecting rod (202), the lifting block (203) being in the shape of a circular truncated cone, long sliding holes (204) provided on both sides of the first pipe (51), an inner sliding groove (205) provided on the pressing plate (9) opposite to the long sliding holes (204), a fixed plate (206) fixed in the inner sliding groove (205), a first guide rod (207) inserted and sliding in the fixed plate (206), a wedge-shaped block (208) fixed at one end of the first guide rod (207) close to the long sliding hole (204) and capable of extending into the inner cavity of the first pipe (51) and being attached to the bottom end surface of the lifting block (203), and a first compression spring (209) sleeved outside the first guide rod (207) and fixed between the wedge-shaped block (208) and the fixed plate (206).

5. A device for producing feed for freshwater fish according to claim 4, characterized in that: The top of the barrel (1) is sleeved with a second guide rod (26) extending into the inner cavity of the first pipe (51), the bottom end of the second guide rod (26) is fixed with a pressing plate (27) attached to the upper end surface of the lifting block (203), and a second compression spring (28) is sleeved outside the second guide rod (26) and fixed between the pressing plate (27) and the inner wall of the barrel (1).

6. A device for producing feed for freshwater fish according to claim 1, characterized in that: The water seepage hole (6) is a conical hole with a smaller outer diameter than an inner diameter.

7. A method for producing a feed for freshwater fish, using the apparatus for producing a feed for freshwater fish according to any one of claims 1 to 6, characterized by, The method comprises the following steps: S1: first, the raw materials are put into the barrel (1) through the feeding port (11), the pressing cylinder (8) is started to push the pressing plate (9) to move downward to press the raw materials, and the water in the raw materials is discharged from the water seepage pipe (5); S2: after the pressing and liquid discharge are completed, the control assembly (23) is started to drive the material separation groove (21) to rotate, so that the second water outlet hole (22) on the material separation groove (21) is staggered with the first water outlet hole (7), and the channel between the first water outlet hole (7) and the water storage cavity (4) is closed; S3: the pressing plate (9) is lifted and reset by starting the pushing cylinder, the second pipe (52) is lifted by the lifting assembly (20), and the bottom end of the second pipe (52) is away from the material distribution groove (2); S4: the discharging motor (16) is started to drive the rotation shaft (14) and the spiral blade (15) to rotate, and the materials in the barrel (1) are sent out from the discharging channel (13).

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