Paste-slurry pellet feed for eriocheir sinensis as well as production method and device of paste-slurry pellet feed

Abstract

The invention provides paste slurry type pellet feed for eriocheir sinensis and a production method and device of the paste slurry type pellet feed. According to the invention, compounded cuttlefish paste, shrimp paste and enzymolysis fish paste form external spraying paste, base material particles are put into a rotating cylinder to form dynamic rolling, and the external spraying paste is sprayed to the surfaces of the rolling base material particles through a nozzle of a spraying pipe, so that the external spraying paste uniformly coats the base material particles and is prevented from caking and falling off; finally, collaborative optimization of food calling enhancement and structural stability is achieved, and the technical defects that traditional pellet feed is insufficient in food calling, poor in water resistance and low in production efficiency are systematically overcome, so that the pellet feed has the chilled fish-grade food calling performance and the stability of commercial feed; an industrial feed solution with efficient ingestion promotion and lasting water resistance is provided for sustainable development of large-scale culture of the eriocheir sinensis.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of Eriocheir sinensis feed, in particular to a paste type granular feed for Eriocheir sinensis and a production method and device thereof. BACKGROUND

[0002] Eriocheir sinensis (hereinafter referred to as Eriocheir sinensis) is favored by consumers due to its rich nutritional value and unique flavor, and is one of the important economic crab species in China. The nutrient accumulation during the fattening stage directly determines the quality and market value of the crab. In the core breeding area of East China, breeders have long relied on ice-fresh fish as fattening feed, as its natural attractiveness can significantly improve the feeding enthusiasm of Eriocheir sinensis.

[0003] However, commercially available commodity feed has the advantage of industrialized production, but has the core defect of insufficient attractiveness. The attractiveness components in the feed are difficult to release effectively and maintain persistently, resulting in prolonged exploration time and reduced food intake of Eriocheir sinensis, which cannot meet the nutritional needs during the fattening period. This technical pain point forces breeders to bear the problems of high storage cost of ice-fresh fish, risk of pathogen transmission and water pollution, which seriously restricts the sustainable development of Eriocheir sinensis breeding industry. Therefore, developing Eriocheir sinensis fattening feed with ice-fresh fish level attractiveness and commodity feed stability has become a technical bottleneck that needs to be broken through in the industry. SUMMARY

[0004] In view of the deficiencies in the above background art, the present application provides a paste type granular feed for Eriocheir sinensis and a production method and device thereof.

[0005] The present application adopts the following technical solutions: In a first aspect, the present application provides a paste type granular feed for Eriocheir sinensis, which comprises the following components by weight: 10-12 parts of base granules, the base granules being puffed feed granules; 1-1.5 parts of a surface spraying layer, the surface spraying layer comprising at least two combinations of squid paste, shrimp paste and enzymatic fish paste; The water content of the surface spraying layer is 20-25%.

[0006] In a feasible implementation manner of the first aspect, in the surface spraying layer, the squid paste is 0.2-0.4 parts; the shrimp paste is 0.3-0.6 parts; and the enzymatic fish paste is 0.5-0.8 parts.

[0007] In a second aspect, the present application provides a method for preparing the above paste type granular feed, which is as follows: Preparation of slurry: uniformly mix squid paste, shrimp paste, enzymatic fish paste and deionized water according to the mass ratio to obtain an external spraying paste; Slurry spraying: put the base material particles into a rotatable spray container, rotate the spray container to drive the base material particles to roll in the spray container, and spray the external spray paste slurry on the surface of the base material particles through the atomizing nozzle to obtain wet granular feed; Moisture control: Use hot air drying to control the moisture content of the wet granular feed at 25% to 35%, and you can get the paste granular feed for Chinese mitten crab.

[0008] In a third aspect, the present invention further provides an apparatus for preparing the above-mentioned paste-type pellet feed by the above-mentioned method, the apparatus comprising: A rotatable rotating drum, wherein a plurality of receiving plates are distributed annularly inside the rotating drum, each receiving plate being bent toward the axis of the rotating drum to form a blocking plate, and a feeding port is provided on one side of each receiving plate at an end surface of one end of the rotating drum, and base material particles are fed into the rotating drum from the feeding port located at a lower side of the rotating drum; A discharge chute is inserted into the rotating drum, one end of the discharge chute is located inside the rotating drum and in the gap formed by the receiving plates, and the discharge chute is inclined and extends toward the sides outside the rotating drum on both sides above the portion inside the rotating drum to form guide plates, the guide plates are close to the edges of the receiving plates, and the other end of the discharge chute extends to the outside of the rotating drum; A spraying tube is inserted into the rotating cylinder, one end of the spraying tube is connected to the output end of the external spray paste, and the other end of the spraying tube extends into the rotating cylinder and is located under the discharge trough. The part of the spraying tube in the rotating cylinder is connected to multiple nozzles, and each of the nozzles is facing the other side relative to the other side for inputting base material particles.

[0009] In a feasible implementation of the third aspect, the equipment also includes a base frame, gantries are fixed on both sides above the base frame, the gantries are connected to a plurality of limiting wheels on the side facing the middle of the base frame, limiting rings are fixed at both ends of the rotating cylinder, and the two limiting rings are respectively adapted to fit outside the limiting wheels of the two gantries, so that the limiting wheels support the rotating cylinder.

[0010] In a feasible implementation of the third aspect, one end of the receiving plate is hinged to the inner wall of the rotating cylinder, connecting rings are provided at both ends of the rotating cylinder, and both sides of each receiving plate are respectively connected to the two connecting rings through a first spring.

[0011] In a feasible implementation of the third aspect, the equipment also includes a base frame and a screw conveyor, the rotating drum is arranged on the base frame to rotate, the screw conveyor is used to convey the base material particles, the screw conveyor is fixed to the base frame, and the discharge port of the screw conveyor corresponds to one end of the feeding port set on the rotating drum, so that when the rotating drum rotates, each of the feeding ports corresponds to the discharge port of the screw conveyor in turn.

[0012] In a feasible implementation of the third aspect, the equipment also includes a mixing barrel, a transmission shaft is provided in the mixing barrel, a stirring rod is fixed on the annular surface of the transmission shaft, the mixing barrel is used to accommodate raw materials for preparing the external spray slurry, and the transmission shaft drives the stirring rod to rotate to stir the raw materials of the external spray slurry; the bottom of the mixing barrel is connected to a high-pressure pump, and the output end of the high-pressure pump is connected to the spray pipe.

[0013] In a possible implementation of the third aspect, the device further includes a transmission mechanism, wherein the transmission mechanism includes a crank and a transmission handle; A first driven column is provided at one end of the crank, and a penetrating guide sleeve is provided at the other end of the reverse side of the crank. The end surface of the rotating cylinder is recessed to form an arc-shaped first groove and a second groove, the first groove and the second groove are connected to each other, the first groove and the rotating cylinder are coaxial, and the second groove is eccentric relative to the first groove, and the first driven column is embedded in the connected first groove and the second groove; the guide sleeve is restricted to linear movement relative to the rotating cylinder, one end of the transmission shaft passes through the outside of the mixing cylinder and the guide sleeve, and the transmission shaft is radially fixed relative to the guide sleeve; The middle of the transmission handle is restricted to slide linearly under the rotating cylinder, and a push-pull portion and a second driven column are respectively provided at both ends of the transmission handle; the push-pull portion is connected to the transmission shaft, and the push-pull portion is fixed relative to the axial direction of the transmission shaft; the annular surface outside the rotating cylinder is provided with a first push-pull groove, a second push-pull groove and a spiral groove, the first push-pull groove and the second push-pull groove are respectively located on the corresponding two sides of the rotating cylinder, and the first push-pull groove and the second push-pull groove are respectively close to the two ends of the rotating cylinder, and both ends of the first push-pull groove and the second push-pull groove are connected by the spiral groove, and the second driven column is embedded in the connected first push-pull groove, the second push-pull groove and the spiral groove; The cross-section of the stirring rod includes a stirring surface and a pushing surface that are perpendicular to each other, and the pushing surface faces the end surface of the mixing barrel. The rotation of the rotating barrel drives the first driven column to swing along the first groove and the second groove, and drives the transmission shaft to swing in the mixing barrel, so that the mixing surface swings radially relative to the mixing barrel; at the same time, the rotation of the rotating barrel drives the second driven column to move along the first push-pull groove, the second push-pull groove and the spiral groove, so that the transmission handle moves relative to the rotating barrel and drives the transmission shaft to move in the mixing barrel, so that the pushing surface moves axially relative to the mixing barrel.

[0014] In a feasible implementation of the third aspect, the end of the mixing drum away from the rotating drum is connected to a support sleeve, and the end of the transmission shaft away from the rotating drum penetrates into the support sleeve.

[0015] In a feasible implementation manner of the third aspect, the support sleeve externally fixes the stirring rod.

[0016] In a feasible implementation manner of the third aspect, an end of the transmission shaft away from the rotating cylinder is provided with a reduced diameter section with a reduced diameter, an active sleeve is sleeved outside the reduced diameter section, the stirring rod is externally fixed on the active sleeve, a second spring is sleeved between a shaft shoulder of the reduced diameter section and the active sleeve, and an elastic force of the second spring in tension pushes the active sleeve towards the support sleeve.

[0017] From the above description of the structure of the present application, compared with the prior art, the present application has the following advantages: the present application forms an external spraying paste slurry by compounding cuttlefish paste, shrimp paste and enzymatic fish paste, and implements dynamic rolling spraying of the external spraying paste slurry on the base material particles, ensures uniform coating of the external spraying paste slurry on the base material particles, avoids clumping and falling off, hot air drying forms an external soft and internal tough gradient structure, finally realizes synergistic optimization of strong food attraction and structural stability, systematically solves the technical defects of insufficient food attraction, poor water resistance and low production efficiency of traditional feed, and provides an industrialized feed solution with efficient feeding promotion and persistent water resistance for the sustainable development of large-scale breeding of Chinese mitten crabs. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the device of the present application connected to the packaging machine.

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the device of the present application.

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the device of the present application. Figure 2 It is a schematic diagram of the cross-sectional structure of the device of the present application.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the device of the present application. Figure 2 It is a schematic diagram of the cross-sectional structure of the device of the present application.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating cylinder connected to the screw conveyor on the rack.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the rotating cylinder connected to the screw conveyor on the rack.

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the device of the present application. Figure 6 It is a schematic diagram of the cross-sectional structure of the device of the present application.

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the device of the present application. Figure 6 It is a front view of the device of the present application.

[0026] Figure 9 It is a schematic diagram of the cross-sectional structure of the device of the present application. Figure 8 It is a schematic diagram of the central part of the rotating cylinder.

[0027] Figure 10 Schematic diagram of the three-dimensional structure of the discharge chute.

[0028] Figure 11 Schematic diagram of the three-dimensional structure of the spray pipe connected to the nozzle.

[0029] Figure 12 It is a schematic diagram of the three-dimensional structure of the device of the present invention from the perspective of one end of the mixing barrel.

[0030] Figure 13 for Figure 12 Schematic diagram after the base frame, gantry, support sleeve, movable sleeve and mixing barrel are hidden.

[0031] Figure 14 A side view of the rotating drum.

[0032] Figure 15 Schematic diagram of the three-dimensional structure of the crank.

[0033] Figure 16 It is a schematic diagram of the three-dimensional structure of the transmission handle. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0035] In the following, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0036] In addition, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0037] The present invention provides a slurry-type granular feed for Chinese mitten crabs, and a production method and device thereof. The slurry-type granular feed of the present invention comprises 10 to 12 parts of base material granules and 1 to 1.5 parts of a surface spray coating. The base material granules are puffed feed granules, the surface spray coating comprises at least two combinations of cuttlefish paste, shrimp paste, and enzymatically hydrolyzed fish paste, and the surface spray coating has a moisture content of 20% to 25%. Preferably, the weight proportions of each component are 10 parts of base material granules and 1.2 parts of the surface spray coating, and the surface spray coating comprises 0.2 to 0.4 parts of cuttlefish paste, 0.3 to 0.6 parts of shrimp paste, and 0.5 to 0.8 parts of enzymatically hydrolyzed fish paste.

[0038] In order to verify the appetitiveness of the feed of the present invention, the applicant conducted the following experiments: Experiment 1: The test feeds were produced at Aohua in Taizhou. Each group produced a total of 600 kg of feed, with 100 kg of the total produced being used as test feed. A 200-gram sample of each feed was collected and stored for subsequent analysis. Six feeds were used in total, with three replicates for each. The formulas for each test group were as follows: Control group: 30% water mixed with Golden Crab Ankang base material; Test group 1: 4% shrimp paste, 4% squid paste, 7% enzymatically hydrolyzed fish paste, and 15% water were mixed with the Golden Crab and Ankang base feed; Test group 2: 15% hydrolyzed fish protein, 15% water and Golden Crab Ankang base material were mixed.

[0039] Three demonstration ponds were selected to conduct comparative feeding tests. Feeding was carried out using feed platforms, with 1 kg of test feed placed on each platform. Three replicates were set up for each test group. The number of crabs and the amount of leftover feed were recorded 4 hours, 8 hours, and 12 hours after feeding to compare the feeding properties of different feeds. The proportion of leftover feed in different ponds for each test group is shown in the following table (1):

[0040] The results in Table (1) above show that the feeding attractant of test group 1 (adding shrimp paste) is better than that of test group 2 (adding hydrolyzed fish protein), and the feeding attractant of the control group is the worst. This result confirms that the feeding attractant effect of feed can be significantly improved by external spraying of paste-like raw materials.

[0041] Experiment two: four kinds of pellet feed with different surface spraying components were placed in four different pond mouth static water environment, after 6 hours of soaking, the samples were taken out, the dissolution rate of each group was calculated according to the formula (initial dry weight-residual dry weight) / initial dry weight*100%; at the same time, the structural integrity was evaluated based on morphological criteria: 5 points represent that the pellet is complete without damage, the surface is smooth and the spraying layer is uniformly attached, 4 points for slight surface roughness or local cracks (<5% surface area) but no structure collapse, 3 points for obvious cracks or edge peeling (5-15% surface area) still maintaining the main shape, 2 points for partial structure disintegration (15-30% surface area) can identify the original shape, 1 point for complete collapse into fragments or paste (>30% surface area), finally the quantitative comparison data shown in the following table (2) were obtained.

[0042]

[0043] The results of the above table (2) show that the 6h dissolution rate of the EG2 group is the lowest, followed by the EG1 group and the EG3 group, it can be seen that spraying raw materials such as squid paste, shrimp paste and enzymatic fish pulp on the finished Chinese mitten crab expanded feed is beneficial to ensure the stability of the paste and pulp type pellet feed.

[0044] From the above experiment one and experiment two, it can be known that the paste and pulp type pellet feed of the application forms a surface spraying layer by spraying raw materials such as squid paste, shrimp paste and enzymatic fish pulp on the finished Chinese mitten crab expanded feed, which is beneficial to enhance the attractiveness of Chinese mitten crab expanded feed, thereby increasing the feeding amount of crabs, ensuring that crabs have enough nutrients to accumulate, and ensuring the fattening effect of crabs. And the paste and pulp type pellet feed can maintain a long time stability, thereby ensuring the feeding effect of Chinese mitten crab.

[0045] The application also provides a method for preparing the above-mentioned paste and pulp type pellet feed, which comprises the following steps: Preparation of slurry: uniformly mix squid paste, shrimp paste, enzymatic fish pulp and deionized water according to the mass ratio to obtain an external spraying paste; Spraying of slurry: put the base material particles (i.e. expanded feed) into a rotatable spraying container, make the spraying container rotate to drive the base material particles to roll in the spraying container, and spray the external spraying paste to the surface of the base material particles through an atomizing nozzle, so as to obtain a wet pellet feed; Moisture control: hot air drying, so that the moisture content of the wet pellet feed is controlled at 25%-35%, thereby obtaining the paste and pulp type pellet feed for Chinese mitten crab.

[0046] The above method forms an external spray paste by compounding squid paste, shrimp paste and enzymatically hydrolyzed fish paste. The rolling spraying process ensures that the paste evenly covers the surface of the base material particles, avoiding local agglomeration or shedding problems; precisely controlled hot air drying forms a gradient structure that is soft on the outside and tough on the inside, significantly reducing the risk of particle collapse while maintaining the palatability of the feed. This method systematically optimizes the technical defects of traditional feeds, such as insufficient attractant properties, poor structural stability and low production efficiency. The prepared paste-type granular feed has both the attractant properties of fresh-frozen fish and the stability of commercial feed, providing an industrial solution for Chinese mitten crab farming that takes into account both efficient attractant properties and long-lasting water resistance.

[0047] The present invention also provides a device for preparing the above-mentioned paste-type granular feed by the above-mentioned method, as shown in the attached Figure 1 and 2 As shown, the device includes a rotating drum 1, a discharge chute 2, a spraying pipe 3, a screw conveyor 4, and a mixing drum 5. The rotating drum 1 can be rotatably arranged on a base frame 6, and one end of the discharge chute 2 and the spraying pipe 3 both extend into the rotating drum 1, and the other ends of the discharge chute 2 and the other ends of the spraying pipe 3 extend out from both ends of the rotating drum 1 respectively.

[0048] As attached Figure 5 As shown, gantry frames 61 are fixed on both sides above the base frame 6, and the rotating drum 1 is set between the two gantry frames 61. Figure 3 , both gantries 61 have a plurality of limiting wheels 62 distributed in a circular array on one side facing the middle of the base frame 6, and limiting rings 11 are fixed at both ends of the rotating cylinder 1. The two limiting rings 11 are respectively mounted on the outer periphery of the limiting wheels 62 of the corresponding gantry 61, supporting the rotation of the rotating cylinder 1 through the limiting wheels 62, while limiting the axial displacement of the rotating cylinder 1 between the two gantries 61. Furthermore, the limiting wheels 62 are embedded in the annular step 111. This structure cooperates with the layout in which both ends of the rotating cylinder 1 are mounted outside the limiting wheels 62 of the gantry 61, and together constrains the rotating cylinder 1 to only rotate around the axis and cannot move relative to the gantry 61. Furthermore, a drive motor 12 can be fixed on the base frame 6, and the output end of the drive motor 12 is fixed to the drive wheel, and a driven wheel is fixed outside the rotating cylinder 1. The driven wheel and the drive wheel are connected by a transmission belt, so that the drive motor 12 drives the rotating seat to rotate.

[0049] Preferably, after one end of the spray pipe 3 extends out of the rotating cylinder 1, its external pipe is fixed to the gantry 61, so that the spray pipe 3 is suspended and inserted into the rotating cylinder 1 and fixed, and the discharge trough 2 can be fixed above the spray pipe 3 so that the spray pipe 3 supports the discharge trough 2.

[0050] As attached Figure 6 and 8As shown, a plurality of receiving plates 7 are distributed in an annular manner in the rotating drum 1. A feeding port 101 is provided on one side of each receiving plate 7 at the end surface of one end of the rotating drum 1, forming a structure in which a plurality of feeding ports 101 are distributed in an annular manner on the end surface of the rotating drum 1. The base material particles are fed into the rotating drum 1 from the feeding port 101 located at the lower side of the rotating drum 1. Figure 5 The screw conveyor 4 for conveying the base material particles to the rotating drum 1 is fixed to the base frame 6, and the discharge port of the screw conveyor 4 corresponds to one end of the rotating drum 1 where the feeding port 101 is set, and the conveying action of the screw conveyor 4 is coordinated with the rotation action of the rotating drum 1, that is, when the rotating drum 1 rotates once so that one feeding port 101 corresponds to the discharge port of the screw conveyor 4, the screw conveyor 4 performs the discharging action in sequence, so that during the rotation of the rotating drum 1, each feeding port 101 corresponds to the discharge port of the screw conveyor 4 in sequence, forming a process of quantitatively feeding the base material particles for spraying in batches. In addition, the discharge port of the screw conveyor 4 is located in the path of the feeding port 101 below one side of the rotating drum 1, so that the base material particles are fed into the rotating drum 1 through the feeding port 101 located below one side of the rotating drum 1 via the screw conveyor 4.

[0051] The above-mentioned coordinated action of the screw conveyor 4 and the rotating drum 1 can be realized through a PLC controller. Specifically, the PLC controller monitors the rotation angle of the rotating drum in real time through an incremental encoder. When the encoder detects that the rotating drum 1 rotates to the preset angle range where the target feeding port 101 is aligned with the discharge port of the screw conveyor 4, it immediately sends a start command to the frequency converter of the screw conveyor 4; the frequency converter drives the motor of the screw conveyor 4 to run at a set speed, and after a pre-calibrated delay wait to ensure that the discharge port is filled with material, a precise discharging action is performed, so that the base material particles are completely put into the feeding port 101 below the rotating drum 1; after completing a single feeding, the screw conveyor 4 automatically pauses, and a new round of feeding cycle is triggered again when the rotating drum 1 rotates to the next feeding port 101 and reaches the aligned position. To ensure the reliability of coordination, a metal sensor sheet is set on the side wall of the rotating drum 1 to cooperate with the proximity switch of the base frame. The cumulative error of the encoder is calibrated every time it passes the zero position. At the same time, a current sensor is configured in the motor circuit of the screw conveyor 1 to detect overload current in real time and trigger emergency stop protection, ultimately achieving seamless coordination between the continuous rotation of the rotating drum 1 and the intermittent feeding of the screw conveyor 4.

[0052] As attached Figure 2 As shown, a transmission shaft 51 is provided in the mixing barrel 5, and a stirring rod 52 is fixed on the annular surface of the transmission shaft 51. The mixing barrel 5 is used to accommodate squid paste, shrimp paste, enzymatic fish paste and other raw materials for preparing the external spray paste. The transmission shaft 51 drives the stirring rod 52 to rotate and stir and mix the raw materials of the external spray paste to obtain the external spray paste. Figure 11 and 12A high pressure pump 32 is also provided at the bottom of the mixing drum 5. The input end of the high pressure pump 32 is connected to the bottom of the mixing drum 5. The output end of the high pressure pump 32 is connected to the external pipe of the spray pipe 3 at one end outside the rotating drum 1. The part of the spray pipe 3 inside the rotating drum 1 is located under the discharge chute 2. Figure 11 As shown, the portion of the spray pipe 3 within the rotating drum 1 is connected to multiple nozzles 31, each facing the opposite side from the one used to inject the base material particles. As the rotating drum 1 rotates clockwise, base material particles are injected into the rotating drum 1 through the injection port 101 and fall onto the inner wall of the rotating drum 1. As the rotating drum 1 rotates, they are pushed upward by the receiving plate 7 on its left side. During this process, the nozzles 31 spray the base material particles with external spray paste.

[0053] Furthermore, as attached Figure 7 As shown, one end of the receiving plate 7 is hinged to the inner wall of the rotating cylinder 1, and the hinge connection can be through a hinge connection or a pin connection. Both ends of the rotating cylinder 1 are also provided with connecting rings 72. Both sides of each receiving plate 7 are connected to the two connecting rings 72 through first springs 71. The first springs 71 can be tension springs. The hooks at both ends of the first springs 71 are hooked to the connecting rings 72 and the receiving plate 7 respectively. When static, the first springs 71 are tightened to position the receiving plate 7 on the radius line of the rotating cylinder 1, forming an attached Figure 8 As shown, the receiving plates 7 are arranged radially relative to the rotating drum 1. When the receiving plates 7 push the base material particles upward, the accumulated gravity of the base material particles presses down on the receiving plates 7, causing them to shake, driving the base material particles to vibrate, causing the nozzles 31 to spray and cover all surfaces of the base material particles to form a uniform coating, ultimately obtaining a paste-like granular feed with a complete surface spraying.

[0054] As attached Figure 2 As shown, the discharge chute 2 is tilted relative to the rotating drum 1. The portion of the discharge chute 2 within the rotating drum 1 is located in the gap formed between the receiving plates 7. Guide plates 21 extend obliquely from the upper side of the portion of the discharge chute 2 within the rotating drum 1 to the sides outside the rotating drum 1. Guide plates 21 are located between the two connecting rings 72 and rotate upward until they align with the edges of the receiving plates 7. The distance between the edges is ≤5mm, allowing the pellets supported by the receiving plates 7 to smoothly transition downward onto the guide plates 21. The other end of the discharge chute 2 extends outside the rotating drum 1. As the rotating drum 1 rotates and drives the pellets upward, the pellets slide downward onto the guide plates 21 as the receiving plates 7 tilt downward. They then slide down the guide plates 21 to the discharge chute 2, then out through the discharge chute 2 to the collection frame 91 outside the rotating drum 1. The slurry pellets in the collection frame 91 can then be transported by an upward-slanting conveyor belt to a baler 92 for packaging.

[0055] As attached Figure 9 and 10As shown, a heating tube 22 is fixed on the end surface of the discharge chute 2 inside the rotating cylinder 1. The heating tube 22 is used to dry and heat the granular feed after spraying to ensure a moisture content of 25% to 35%, thereby forming a paste-type granular feed with a gradient structure of soft outside and tough inside.

[0056] As attached Figure 12 and 13 As shown in FIG. 1 , the device further comprises a transmission mechanism for linking the rotating drum 1 and the transmission shaft 51, the transmission mechanism comprising a crank 81 and a transmission handle 82. Figure 15 A first driven column 811 is provided at one end of the crank 81, and a guide sleeve 812 is provided at the other end of the crank 81 opposite to the first driven column 811. The guide sleeve 812 is restricted to rotate relative to the rotating drum 1. Specifically, a bearing seat can be fixed on the base frame 6, and the guide sleeve 812 is fixed to the inner ring of the bearing seat, thereby restricting the guide sleeve 812 to rotate only. The end surface of the rotating drum 1 is recessed to form a first groove 131 and a second groove 132 in the shape of an arc path. The first groove 131 and the second groove 132 are connected to each other, and the first groove 131 and the rotating drum 1 are coaxial, and the second groove 132 is eccentric relative to the first groove 131. The first driven column 811 is embedded in the connected first groove 131 and second groove 132. When the rotating drum 1 rotates, the first groove 131 and the second groove 132 rotate accordingly, and the side walls of the second groove 132 and the side walls of the first groove 131 push the first driven column 811 to move accordingly, thereby driving the guide sleeve 812 to rotate. Preferably, the end of the first driven column 811 is embedded with a bearing as a roller, which is adapted to be embedded in the first groove 131 and the second groove 132, so that the part of the first driven column 811 embedded in the first groove 131 and the second groove 132 can move smoothly, ensuring the synchronization of the movements of the rotating drum 1 and the transmission shaft 51 of the mixing drum 5 during the linkage process of the transmission mechanism.

[0057] One end of the transmission shaft 51 passes through the outside of the mixing barrel 5 and through the guide sleeve 812, and the transmission shaft 51 is radially fixed relative to the guide sleeve 812. Specifically, a through keyway can be set on the inner wall of the guide sleeve 812, and a fixed key strip is welded on the surface of the transmission shaft 51 along its length direction. The key strip is adapted to pass through the keyway in the guide sleeve 812, thereby forming a restriction on the transmission shaft 51, so that the rotation of the guide sleeve 812 can drive the transmission shaft 51 to rotate accordingly, thereby driving the stirring rod 52 to swing in the mixing barrel 5 to achieve mixing and stirring of raw materials such as squid paste, shrimp paste, and enzymatic fish paste.

[0058] The middle of the transmission handle 82 is restricted to slide linearly below the rotating drum 1. Specifically, a linear bearing can be fixed on the chassis 6, and the rod body portion in the middle of the transmission handle 82 passes through the linear bearing, thereby restricting the transmission handle 82 to slide linearly. Figure 16As shown, a push-pull portion 822 and a second driven column 821 are respectively provided at both ends of the transmission handle 82. The push-pull portion 822 is connected to the transmission shaft 51 and is fixed relative to the axial direction of the transmission shaft 51. Specifically, after the transmission shaft 51 passes through the push-pull portion 822, the transmission shaft 51 is fixed with limiting rings 11 on both sides of the push-pull portion 822. The two limiting rings 11 can limit the push-pull portion 822, so that when the push-pull portion 822 moves, it drives the transmission shaft 51 to move linearly along its axial direction.

[0059] As attached Figure 14 As shown, the annular surface outside the rotating cylinder 1 is provided with a first push-pull groove 141, a second push-pull groove 142 and a spiral groove 143. The first push-pull groove 141 and the second push-pull groove 142 are respectively located on the corresponding two sides of the rotating cylinder 1, and the first push-pull groove 141 and the second push-pull groove 142 are respectively close to the two ends of the rotating cylinder 1. Both ends of the first push-pull groove 141 and the second push-pull groove 142 are connected by the spiral groove 143, and the second driven column 821 is embedded in the connected first push-pull groove 141, the second push-pull groove 142 and the spiral groove 143. When the rotating drum 1 rotates, the first push-pull groove 141, the second push-pull groove 142, and the spiral groove 143 rotate accordingly. When the spiral groove 143 is rotated to the position where it is embedded in the second driven column 821, as the rotating drum 1 continues to rotate, the first driven column 811 moves along the spiral groove 143 from the first push-pull groove 141 to the second push-pull groove 142, or moves along the other spiral groove 143 from the second push-pull groove 142 to the first push-pull groove 141. This drives the transmission handle 82 to move relative to the rotating drum 1, and drives the transmission shaft 51 to move through the push-pull portion 822, so that the stirring rod 52 pushes the squid paste, shrimp paste, enzymatically hydrolyzed fish paste, and other raw materials in the mixing drum 5 to shake in the mixing drum 5 to form a stirring action.

[0060] As attached Figure 11 As shown, the cross-section of the stirring rod 52 includes a stirring surface 521 and a pushing surface 522 that are perpendicular to each other. The pushing surface 522 faces the end surface of the mixing barrel 5. When the rotating barrel 1 rotates and drives the first driven column 811 to swing along the first groove 131 and the second groove 132, it drives the transmission shaft 51 to swing within the mixing barrel 5, causing the mixing surface to swing radially relative to the mixing barrel 5, thereby improving the efficiency of stirring the slurry. At the same time, the rotation of the rotating barrel 1 drives the second driven column 821 to move along the first push-pull groove 141, the second push-pull groove 142, and the spiral groove 143, causing the transmission handle 82 to move relative to the rotating barrel 1 and driving the transmission shaft 51 to move within the mixing barrel 5, causing the pushing surface 522 to move axially relative to the mixing barrel 5, thereby improving the efficiency of pushing the slurry.

[0061] As attached Figure 4As shown, the end of the mixing drum 5 away from the rotating drum 1 is connected to the support sleeve 53, and the end of the transmission shaft 51 away from the rotating drum 1 is inserted into the support sleeve 53, and the end of the transmission shaft 51 away from the rotating drum 1 is supported by the support sleeve 53. Furthermore, the stirring rod 52 is fixed to the outside of the support sleeve 53, and a keyway is provided in the support sleeve 53. The key strip on the surface of the transmission shaft 51 is inserted into the keyway of the support sleeve 53 with a clearance fit. When the transmission shaft 51 rotates, the support sleeve 53 is also driven to rotate, thereby stirring the slurry in the mixing drum 5 at the end away from the rotating drum 1.

[0062] Continue to refer to the attached Figure 4 A reduced diameter section 511 is provided at one end of the transmission shaft 51 away from the rotating drum 1. A movable sleeve 54 is provided on the outer surface of the reduced diameter section 511. The stirring rod 52 is fixed on the outer surface of the movable sleeve 54. A second spring 55 is provided between the shaft shoulder of the reduced diameter section 511 and the movable sleeve 54. The elastic force of the second spring 55 pushes the movable sleeve 54 toward the support sleeve 53. When the transmission handle 82 drives the transmission shaft 51 to move toward one end of the support sleeve 53, the second spring 55 is compressed and pushes the movable sleeve 54 to move toward the support sleeve 53. When the transmission handle 82 drives the transmission shaft 51 to move toward the rotating cylinder 1, the second spring 55 releases its elastic force to drive the movable sleeve 54 to move toward one end of the rotating sleeve. After that, the second spring 55 continues to compress and release repeatedly until it stops, and the movable sleeve 54 moves accordingly. In this process, the movable sleeve 54 is driven to move back and forth between the stirring rod 52 of the transmission shaft 51 and the stirring rod 52 of the support platform, which can push the slurry between the stirring rod 52 of the transmission shaft 51 and the stirring rod 52 of the support platform, which is beneficial to improving the efficiency of slurry mixing.

[0063] In summary, in the device of the present invention, a plurality of receiving plates 7 hinged to the inner wall are distributed in an annular manner inside the rotating cylinder 1. The two sides of the receiving plates 7 are connected to the connecting rings 72 at the inner end of the rotating cylinder 1 by the first spring 71. When static, the receiving plates 7 are arranged radially. The screw conveyor 4 is fixed to the base frame 6, and the discharge port corresponds to the feeding port 101 provided below one end of the rotating cylinder 1. The base material particles are fed into the inner wall of the rotating cylinder 1 through the feeding port 101 and are pushed up by the receiving plates 7 as the cylinder rotates. A transmission shaft 51 with a stirring rod 52 is provided in the mixing cylinder 5, and a high-pressure pump 32 at the bottom is connected to the spray pipe 3. The part of the spray pipe 3 extending into the rotating cylinder 1 is located below the discharge trough 2 and is provided with a plurality of nozzles 31. The nozzles 31 push the upward side of the base material particles toward the receiving plate 7. When the rotating cylinder 1 rotates, the receiving plate 7 is pressed down by the gravity of the base material particles to cause shaking, and cooperates with the nozzles 31 to spray to form a surface coating layer. The discharge chute 2 is tilted and arranged in the rotating drum 1. Guide plates 21 extend from both sides above the discharge chute and are close to the edge of the receiving plate 7. The pellet feed slides down the receiving plate 7 to the guide plate 21 and is discharged through the discharge chute 2. The linkage mechanism drives the crank 81 through the first groove 131 and the second groove 132 on the end face of the rotating drum 1 to drive the transmission shaft 51 to swing. At the same time, the first push-pull groove 141, the second push-pull groove 142 and the spiral groove 143 on the outer wall of the rotating drum 1 drive the transmission handle 82 to drive the transmission shaft 51 to move axially, so that the stirring rod 52 can simultaneously achieve radial swing and axial push in the mixing drum 5. The distal end of the transmission shaft 51 is supported by the support sleeve 53. The reduced diameter section 511 is provided with a movable sleeve 54 with a second spring 55. The movable sleeve 54 is externally provided with the stirring rod 52. When the transmission shaft 51 moves axially, the movable sleeve 54 is acted upon by the spring to reciprocate, thereby enhancing the slurry mixing efficiency.

[0064] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A paste granular feed for Chinese mitten crab, characterized in that: The paste granular feed comprises the following components in parts by weight: 10-12 parts of base material particles, wherein the base material particles are expanded feed particles; 1 to 1.5 parts of a surface spray coating, wherein the surface spray coating comprises at least two of a combination of cuttlefish paste, shrimp paste, and enzymatically hydrolyzed fish paste; Wherein, the moisture content of the surface spray coating is 20% to 25%.

2. The paste granular feed according to claim 1, wherein The surface spray coating comprises 0.2 to 0.4 parts of squid paste, 0.3 to 0.6 parts of shrimp paste, and 0.5 to 0.8 parts of enzymatically hydrolyzed fish paste.

3. A method for preparing the paste granular feed according to claim 1 or 2, characterized in that: The method is as follows: Preparation of slurry: squid paste, shrimp paste, enzymatically hydrolyzed fish paste and deionized water are mixed uniformly according to the mass ratio to obtain external spray paste; Slurry spraying: put the base material particles into a rotatable spray container, rotate the spray container to drive the base material particles to roll in the spray container, and spray the external spray paste slurry on the surface of the base material particles through the atomizing nozzle to obtain wet granular feed; Moisture control: Use hot air drying to control the moisture content of the wet granular feed at 25% to 35%, and you can get the paste granular feed for Chinese mitten crab.

4. An apparatus for preparing a paste-type granular feed according to claim 1 or 2, characterized in that: The device includes: A rotatable rotating drum, wherein a plurality of receiving plates are distributed annularly inside the rotating drum, each receiving plate being bent toward the axis of the rotating drum to form a blocking plate, and a feeding port is provided on one side of each receiving plate at an end surface of one end of the rotating drum, and base material particles are fed into the rotating drum from the feeding port located at a lower side of the rotating drum; A discharge chute is inserted into the rotating drum, one end of the discharge chute is located inside the rotating drum and in the gap formed by the receiving plates, and the discharge chute is inclined and extends toward the sides outside the rotating drum on both sides above the portion inside the rotating drum to form guide plates, the guide plates are close to the edges of the receiving plates, and the other end of the discharge chute extends to the outside of the rotating drum; A spraying tube is inserted into the rotating cylinder, one end of the spraying tube is connected to the output end of the external spray paste, and the other end of the spraying tube extends into the rotating cylinder and is located under the discharge trough. The part of the spraying tube in the rotating cylinder is connected to multiple nozzles, and each of the nozzles is facing the other side relative to the other side for inputting base material particles.

5. The device according to claim 4, characterized in that: The equipment also includes a base frame, gantries are fixed on both sides above the base frame, and the gantries are connected to multiple limiting wheels on the side facing the middle of the base frame. Limiting rings are fixed at both ends of the rotating cylinder, and the two limiting rings are respectively adapted to fit outside the limiting wheels of the two gantries, so that the limiting wheels support the rotating cylinder.

6. The device according to claim 4, characterized in that: One end of the receiving plate is hinged to the inner wall of the rotating cylinder. Connecting rings are provided at both ends of the rotating cylinder. Both sides of each receiving plate are respectively connected to the two connecting rings through a first spring.

7. The device according to claim 4, characterized in that: The equipment also includes a base frame and a screw conveyor. The rotating drum is arranged on the base frame for rotation. The screw conveyor is used to convey base material particles. The screw conveyor is fixed to the base frame, and the discharge port of the screw conveyor corresponds to one end of the feeding port set on the rotating drum, so that when the rotating drum rotates, each feeding port corresponds to the discharge port of the screw conveyor in sequence.

8. The device according to claim 4, characterized in that: The equipment also includes a mixing barrel, in which a transmission shaft is arranged, and a stirring rod is fixed on the annular surface of the transmission shaft. The mixing barrel is used to accommodate raw materials for preparing the external spray slurry, and the transmission shaft drives the stirring rod to rotate to stir the raw materials of the external spray slurry; the bottom of the mixing barrel is connected to a high-pressure pump, and the output end of the high-pressure pump is connected to the spray pipe.

9. The device according to claim 8, characterized in that: The device also includes a transmission mechanism, which includes a crank and a transmission handle; A first driven column is provided at one end of the crank, and a penetrating guide sleeve is provided at the other end of the reverse side of the crank. The end surface of the rotating cylinder is recessed to form an arc-shaped first groove and a second groove, the first groove and the second groove are connected to each other, the first groove and the rotating cylinder are coaxial, and the second groove is eccentric relative to the first groove, and the first driven column is embedded in the connected first groove and the second groove; the guide sleeve is restricted to linear movement relative to the rotating cylinder, one end of the transmission shaft passes through the outside of the mixing cylinder and the guide sleeve, and the transmission shaft is radially fixed relative to the guide sleeve; The middle of the transmission handle is restricted to slide linearly under the rotating cylinder, and a push-pull portion and a second driven column are respectively provided at both ends of the transmission handle; the push-pull portion is connected to the transmission shaft, and the push-pull portion is fixed relative to the axial direction of the transmission shaft; the annular surface outside the rotating cylinder is provided with a first push-pull groove, a second push-pull groove and a spiral groove, the first push-pull groove and the second push-pull groove are respectively located on the corresponding two sides of the rotating cylinder, and the first push-pull groove and the second push-pull groove are respectively close to the two ends of the rotating cylinder, and both ends of the first push-pull groove and the second push-pull groove are connected by the spiral groove, and the second driven column is embedded in the connected first push-pull groove, the second push-pull groove and the spiral groove; The cross-section of the stirring rod includes a stirring surface and a pushing surface that are perpendicular to each other, and the pushing surface faces the end surface of the mixing barrel. The rotation of the rotating barrel drives the first driven column to swing along the first groove and the second groove, and drives the transmission shaft to swing in the mixing barrel, so that the mixing surface swings radially relative to the mixing barrel; at the same time, the rotation of the rotating barrel drives the second driven column to move along the first push-pull groove, the second push-pull groove and the spiral groove, so that the transmission handle moves relative to the rotating barrel and drives the transmission shaft to move in the mixing barrel, so that the pushing surface moves axially relative to the mixing barrel.

10. The device according to claim 8 or 9, characterized in that: One end of the mixing barrel away from the rotating barrel is connected to a support sleeve, and one end of the transmission shaft away from the rotating barrel penetrates into the support sleeve.

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