Pet food granulation equipment and manufacturing method thereof

Abstract

The present invention discloses a pet food granulation equipment and a manufacturing method thereof, which relates to the field of pet food processing technology, including a working frame, a screw extruder, a connecting pipe, a granulation mold and a cutter, wherein the screw extruder is arranged on the working frame and the output end is connected with one end of the connecting pipe, the granulation mold is tightly sleeved on the output end of the connecting pipe, the cutter is rotatably arranged on the outer wall of the granulation mold, and the output end of the connecting pipe is connected with a branch pipe through a branch pipe. The present invention arranges the connecting pipe vertically so that during the extrusion process, the materials in various directions are subjected to more uniform force when extruded, avoiding the situation where the upper and lower extrusion forces are uneven under the influence of gravity, and the drainage cone is arranged to drain the materials into multiple branch pipes, and the materials can be pre-guided into multiple branch pipes through the cooperation of the branch pipes and the branch pipes, so that the materials are pre-extruded, ensuring that the materials in each branch pipe are more uniform, and the particles will be more uniform when extruded.

Description

Technical Field

[0001] The invention relates to the technical field of pet food processing, in particular to a pet food granulating device and a manufacturing method thereof. Background Art

[0002] Pet feed is a food specially provided for pets and small animals. It is a high-end animal food between human food and traditional livestock and poultry feed. The production of pet feed requires the use of special granulating equipment, which is used to make the stirred materials into the required granules;

[0003] For example, a pet food granulating device of "CN221156541U" includes a device carrier, a connecting structure fixedly connected to the top of the device carrier for connecting and supporting, a granulating structure arranged above the connecting structure, a support rod fixedly connected to the top of the device carrier for supporting the granulating structure, a crushing structure arranged above the device carrier for crushing large food particles, wherein the granulating structure includes: a driving component and a granulating component, the driving component is arranged above the connecting structure for pressure processing the food, the granulating structure is arranged to granulate the pet food, the processing component is arranged to extrude the pet food, the granulating component is arranged to granulate the pet food and carry out the next step, and the crushing structure can crush the large pet food particles into small particles, thereby completing the granulation;

[0004] However, in the prior art, direct extrusion is usually used, as shown in the above patent. Due to the large extrusion area and deep extrusion barrel, the material is easily affected by gravity during the extrusion process, resulting in a greater pressure on the material at the lower end than at the upper end. Due to the uneven pressure, the density of the extruded particles may vary. At the same time, the extrusion barrel is not easy to replace, and the temperature of the newly extruded particles is relatively high. If they cannot be cooled in time, they are prone to deformation, which affects the appearance. Summary of the invention

[0005] In view of the above existing problems, the present invention is proposed.

[0006] The purpose of the present invention is to solve the problem in the prior art that uneven extrusion pressure may cause differences in density of extruded particles.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] On the one hand, the present invention provides a pet food granulation equipment, which includes a working frame, a screw extruder, a connecting pipe, a granulation mold and a cutter, wherein the screw extruder is arranged on the working frame and the output end is connected to one end of the connecting pipe, the granulation mold is tightly sleeved on the output end of the connecting pipe, the cutter is rotatably arranged on the outer wall of the granulation mold, the output end of the connecting pipe is connected to a branch pipe through a branch pipe, and the branch pipe is provided with multiple branches and is tightly fitted with the inner wall of the granulation mold, the working frame is provided with an outer frame, the granulation mold and the cutter are both located in the outer frame, the granulation mold and the outer frame are detachably assembled and connected, the granulation mold is composed of multiple templates, the templates correspond to the branch pipes one by one, the cutters are evenly provided, a spiral conveying mechanism is provided at the lower part of the inner part of the outer frame, the output end of the spiral conveying mechanism is located at the center and is the highest point, a discharge pipe is connected below the output end of the spiral conveying mechanism, a conveyor belt is provided on the working frame, and the discharge pipe is located directly above the conveyor belt, and a cooling mechanism is provided in the outer frame.

[0009] Furthermore, the screw extruder is horizontally arranged on the working frame, the connecting pipe is vertically arranged on the working frame and is vertically connected to the screw extruder, and a drainage cone is provided at the lower part of the connecting pipe. By vertically arranging the connecting pipe, during the extrusion process, the materials in various directions are subjected to more uniform force when extruded, thereby avoiding the situation where the upper and lower extrusion forces are uneven under the influence of gravity. Through the provided drainage cone, the material can be drained into multiple branch pipes, and through the cooperation of the branch pipes and the branch pipes, the material can be pre-guided into multiple branch pipes, so that the material can be pre-extruded, ensuring that the material in each branch pipe is more uniform, and the particles will be more uniform during extrusion.

[0010] Furthermore, the output end of the branch pipe is arranged toward the bottom of the side wall of the connecting pipe, the branch pipe is arranged in an arc-shaped structure and both ends are sealed to the inner wall of the granulation mold, the output end of the branch pipe is connected and arranged in the upper part of the branch pipe, and the space at the lower end of the branch pipe is smaller than the space at the upper end. Through such a structural distribution, it is avoided that the material accumulates below the branch pipe under the influence of gravity, causing the upper extrusion pressure to be lower than the lower pressure.

[0011] Furthermore, end covers and fixing seats are respectively provided above and below the template through sealing gaskets, a guide plate is provided on the side of the fixing seat, and the fixing seat is assembled and connected to the inner wall of the outer frame through a support frame, a sealing cover is provided above the end cover, and the outer wall of the sealing cover is threadedly connected to the inner wall of the outer frame, and an installation space is reserved between adjacent branch pipes, and end plates are provided at both ends of the template, and the end plates are slidably arranged between the two branch pipes. When the template is disassembled or replaced, the sealing cover and the inner wall of the outer frame can be threadedly disassembled to remove the sealing gasket and the end cover, and the corresponding template can be slid upward to take it out, and then the template to be replaced is taken and clamped above the fixing seat, the sealing gasket and the end cover are installed, and the sealing cover is threadedly installed to fix it. By setting up multiple templates, it is convenient to replace a certain part. If the template is damaged, only one piece needs to be replaced, which effectively saves costs. Different templates can also be used to output particles of different shapes at the same time.

[0012] Furthermore, connecting rings are slidably provided above and below the outer side of the granulation mold, a fixing frame is provided between the two connecting rings, the tool is obliquely arranged on the fixing frame, the blade of the tool is slidably arranged with the granulation mold, the connecting ring is provided with a gear ring through a bracket, the gear ring is rotatably connected to the inner wall of the outer frame, a gear is rotatably provided on the side wall of the outer frame, the gear is driven to rotate by a first motor, the gear is meshed with the gear ring, and by driving the first motor, the gear is driven to rotate, and then the gear ring is driven to rotate, thereby realizing the rotation of the connecting ring and the tool, and achieving the cutting of the extruded particles.

[0013] Furthermore, the spiral conveying mechanism includes a spiral frame and a conveying roller. The spiral frame is arranged in a spiral shape, and the spiral diameter at the upper end is smaller than the spiral diameter at the lower end. The conveying rollers are evenly provided with multiple and both ends are rotatably connected to the spiral frame respectively. The adjacent end faces of the conveying rollers are linked by a chain. The end face of the conveying roller at the lower end is driven to rotate by a second motor. By driving the second motor, all the conveying rollers are driven to rotate, and the food particles that fall into the outer frame are transported upward by the rotation of the conveying rollers until they fall into the discharge pipe at the upper end.

[0014] Furthermore, a soft fur layer is provided on the outer wall of the conveying roller, and a support bracket is provided on the spiral frame between adjacent conveying rollers. The distance between adjacent conveying rollers is not greater than the diameter of the food particles in the minimum complete state. The support bracket is used to support the position between two adjacent conveying rollers at a larger distance to prevent the gap from being too large and causing the complete particles to fall. The soft fur layer can increase the friction of the food particles on the conveying roller, and at the same time increase the buffering of the particles to avoid damage during transportation.

[0015] Furthermore, the spiral frame is located at the center position of the outer frame, and the lower part of the inner part of the outer frame located outside the spiral frame is inclined toward the center position. A scraper is slidably provided at the lower edge of the inner part of the outer frame. A third motor is provided below the fixed seat, and a linkage frame is provided at the output end of the third motor. The linkage frame is assembled and connected to the upper end of the scraper. A drainage chamber is provided below the outer frame, and a collecting trough is provided on the working frame. The output end of the drainage chamber is located directly above the collecting trough. The scraper is driven to rotate by the third motor to drain the particles falling on the inner edge of the outer frame to the feeding end at the lower end of the spiral frame, and the lower end edge of the outer frame is inclined to guide the particles onto the spiral frame, and the particles are transported upward in conjunction with the rotation of the conveying roller.

[0016] Furthermore, the cooling mechanism includes a condenser, a fan and a blower head, the condenser is laid under the spiral frame, the fan is arranged on the work frame, the inner wall of the outer frame is provided with an air duct, the blower head is provided with multiple and evenly connected air ducts, the fan output end is connected to the end face of the air duct, and the fan is driven to blow air into the outer frame through the blower head to cool the extruded particles. The condenser is arranged in conjunction with the particles during the transportation process.

[0017] In another aspect, the present invention provides a method for manufacturing a pet food granulating device, comprising:

[0018] Step S1, introducing the raw material into the screw extruder at a uniform speed, compressing the raw material into the connecting pipe through the screw extruder, and introducing the raw material into each branch pipe through the branch pipe of the connecting pipe, and the raw material is extruded from the cavity of the granulation mold at the corresponding branch pipe, and the cutter is rotated to cut the extruded raw material into granules;

[0019] Step S2, the extruded food particles fall evenly into the outer frame under the guidance of the guide plate, and are gradually conveyed to the top of the spiral conveyor mechanism by the rotation of the spiral conveyor mechanism at the lower part of the outer frame. During the conveying process, particles that are too small are missed between adjacent conveying rollers, and complete particles are conveyed to the uppermost end and fall from the discharge pipe;

[0020] Step S3, driving the fan to blow air into the outer frame through the blower head to cool the extruded particles;

[0021] Step S4: Particles of uniform size are discharged from the discharge pipe and fall onto the conveyor belt for outward transportation, while broken particles fall into the collecting tank for collection.

[0022] The beneficial effects of the present invention are:

[0023] 1. The present invention sets the connecting pipe vertically so that during the extrusion process, the materials in various directions are subjected to more uniform force when being extruded, thereby avoiding the situation where the upper and lower extrusion forces are uneven under the influence of gravity. The material can be guided into multiple branch pipes by the provided drainage cone. Through the cooperation of the branch pipe and the branch pipe, the material can be pre-guided into multiple branch pipes, so that the material is pre-extruded, ensuring that the material in each branch pipe is more uniform, and the particles will be more uniform during extrusion.

[0024] 2. The present invention disassembles the sealing cover and the inner wall of the outer frame by threading, and then takes out the sealing gasket and the end cap, slides the corresponding template upward to take it out, and then takes the template to be replaced and engages it above the fixing seat, installs the sealing gasket and the end cap, and threads the sealing cover to fix it. The multiple templates are arranged to facilitate the replacement of a certain part. If the template is damaged, only one piece needs to be replaced, which effectively saves costs. Different templates can also be used to output particles of different shapes at the same time.

[0025] 3. The present invention drives all the conveying rollers to rotate by driving the second motor, and the food particles falling into the outer frame are transported upward by the rotation of the conveying rollers until they fall into the discharge pipe at the upper end, while other small particles fall through the gaps between adjacent conveying rollers, thereby achieving a screening effect.

[0026] 4. The present invention drives the fan to blow air into the outer frame through the blower head to cool the extruded particles. The condenser tube is arranged to cool the particles during the transportation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0028] Figure 1 A three-dimensional diagram of a pet food granulation device and a manufacturing method thereof provided by the present invention;

[0029] Figure 2 A schematic diagram of the internal structure of a working frame of a pet food granulating device and a manufacturing method thereof provided by the present invention;

[0030] Figure 3 A schematic diagram of the internal structure of the outer frame of a pet food granulating device and a manufacturing method thereof provided by the present invention;

[0031] Figure 4 A bottom view of the outer frame of a pet food granulating device and a manufacturing method thereof provided by the present invention;

[0032] Figure 5 A schematic diagram of the internal structure of a connecting pipe of a pet food granulating device and a manufacturing method thereof provided by the present invention;

[0033] Figure 6 An exploded view of a granulation mold of a pet food granulation device and a manufacturing method thereof provided by the present invention;

[0034] Figure 7 A schematic diagram of a cutter structure of a pet food granulating device and a manufacturing method thereof provided by the present invention;

[0035] Figure 8 A schematic diagram of the assembly of an outer frame and a spiral rack of a pet food granulating device and a manufacturing method thereof provided by the present invention;

[0036] Fig. 9 A bottom view of a spiral frame of a pet food granulating device and a manufacturing method thereof provided by the present invention;

[0037] Fig.10 A schematic diagram of a conveying roller of a pet food granulating device and a manufacturing method thereof provided by the present invention.

[0038] Legend:

[0039] 1. Work stand; 2. Screw extruder; 3. Connecting pipe; 4. Granulating mold; 411. Template; 5. Cutting tool; 611. Branch pipe; 612. Branch pipe; 7. Outer frame; 8. Discharging pipe; 9. Conveyor belt; 10. Drainage cone; 111. Sealing pad; 112. End cover; 113. Fixed seat; 114. Drainage plate; 115. Support frame; 116. Sealing cover; 117. End plate; 121. Connecting ring; 122. Fixing Fixed frame; 123, gear ring; 124, bracket; 125, gear; 126, first motor; 131, spiral frame; 132, conveying roller; 133, second motor; 134, soft fur layer; 135, support bracket; 141, scraper; 142, third motor; 143, linkage frame; 144, drainage chamber; 145, collecting trough; 151, condenser; 152, fan; 153, blower head; 154, air duct. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] Secondly, as referred to herein, "one embodiment" or "embodiment" refers to a specific feature, structure, or characteristic that can be included in at least one implementation of the present invention. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0043] See also Figure 1-Figure 10 The present invention provides a technical solution: a pet food granulation device, including a working frame 1, a screw extruder 2, a connecting pipe 3, a granulation mold 4 and a cutter 5, the screw extruder 2 is arranged on the working frame 1 and the output end is connected with one end of the connecting pipe 3, the granulation mold 4 is tightly sleeved on the output end of the connecting pipe 3, the cutter 5 is rotatably arranged on the outer wall of the granulation mold 4, the output end of the connecting pipe 3 is connected with a branch pipe 612 through a branch pipe 611, the branch pipe 612 is provided with a plurality of branches and is tightly fitted with the inner wall of the granulation mold 4, and the working frame 1 is provided with an outer frame 7. The granulation mold 4 and the cutter 5 are both located in the outer frame 7. The granulation mold 4 and the outer frame 7 are detachably assembled and connected. The granulation mold 4 is composed of a plurality of templates 411. The templates 411 correspond to the branch pipes 612 one by one. The cutters 5 are evenly arranged. A spiral conveying mechanism is arranged at the lower part of the outer frame 7. The output end of the spiral conveying mechanism is located at the center and is the highest point. A discharge pipe 8 is connected to the lower part of the output end of the spiral conveying mechanism. A conveyor belt 9 is arranged on the working frame 1. The discharge pipe 8 is located directly above the conveyor belt 9. A cooling mechanism is arranged in the outer frame 7.

[0044] like Figure 1-Figure 10 As shown, the screw extruder 2 is horizontally arranged on the working frame 1, the connecting pipe 3 is vertically arranged on the working frame 1, and is vertically connected to the screw extruder 2. A drainage cone 10 is arranged at the lower part of the connecting pipe 3. By vertically arranging the connecting pipe 3, during the extrusion process, the materials in various directions are subjected to more uniform force when extruded, avoiding the situation where the upper and lower extrusion forces are uneven under the influence of gravity. Through the set drainage cone 10, the material can be drained into multiple branch pipes 611. Through the cooperation of the branch pipe 611 and the branch pipe 612, the material can be pre-guided into the multiple branch pipes 612, so that the material is pre-extruded, ensuring that the material in each branch pipe 612 is more uniform, and the particles will be more uniform during extrusion.

[0045] like Figure 1-Figure 10 As shown, the output end of the branch pipe 611 is arranged toward the lower side wall of the connecting pipe 3, the branch pipe 612 is arranged in an arc-shaped structure and both ends are sealed to the inner wall of the granulation mold 4, the output end of the branch pipe 611 is connected and arranged in the upper middle part of the branch pipe 612, and the space at the lower end of the branch pipe 612 is smaller than the space at the upper end. Through such a structural distribution, it is avoided that the material accumulates under the branch pipe 612 under the influence of gravity, causing the upper extrusion pressure to be less than the lower pressure.

[0046] like Figure 1-Figure 10 As shown, the template 411 is provided with an end cover 112 and a fixing seat 113 respectively above and below through a sealing gasket 111, a guide plate 114 is provided on the side of the fixing seat 113, and the fixing seat 113 is assembled and connected with the inner wall of the outer frame 7 through a support frame 115. A sealing cover 116 is provided above the end cover 112, and the outer wall of the sealing cover 116 is threadedly connected with the inner wall of the outer frame 7. An installation space is left between adjacent branch pipes 612, and end plates 117 are provided at both ends of the template 411. The end plate 117 is slidably set between the two branch pipes 612. When the template 411 is disassembled or replaced, the sealing cover can be removed. 116 is threadedly disassembled between the inner wall of the outer frame 7, and then the sealing gasket 111 and the end cover 112 are taken out, the corresponding template 411 is slid upward to be taken out, and then the template 411 to be replaced is snapped on the top of the fixing seat 113, the sealing gasket 111 and the end cover 112 are installed, and the sealing cover 116 is threadedly installed to fix it. The multiple templates 411 are set up to facilitate the replacement of a certain part. If the template 411 is damaged, only one piece needs to be replaced, which effectively saves costs. Different templates 411 can also be used to achieve the simultaneous output of particles of different shapes.

[0047] like Figure 1-Figure 10 As shown, connecting rings 121 are slidably provided above and below the outer side of the granulation mold 4, a fixing frame 122 is provided between the two connecting rings 121, the tool 5 is tiltedly arranged on the fixing frame 122, and the blade of the tool 5 is slidably arranged with the granulation mold 4, the connecting ring 121 is provided with a gear ring 123 through a bracket 124, the gear ring 123 is rotatably connected to the inner wall of the outer frame 7, and a gear 125 is rotatably provided on the side wall of the outer frame 7, the gear 125 is driven to rotate by a first motor 126, and the gear 125 is meshed with the gear ring 123. By driving the first motor 126, the gear 125 is driven to rotate, and then the gear ring 123 is driven to rotate, thereby realizing the rotation of the connecting ring 121 and the tool 5, and achieving the cutting of the extruded particles.

[0048] like Figure 1-Figure 10 As shown, the spiral conveying mechanism includes a spiral frame 131 and a conveying roller 132. The spiral frame 131 is arranged in a spiral shape, and the spiral diameter at the upper end is smaller than the spiral diameter at the lower end. The conveying roller 132 is evenly provided with multiple and both ends are rotatably connected to the spiral frame 131 respectively. The end faces of adjacent conveying rollers 132 are linked by a chain. The end face of a conveying roller 132 at the lower end is driven to rotate by a second motor 133. By driving the second motor 133, all the conveying rollers 132 are driven to rotate, and the food particles that fall into the outer frame 7 are transported upward by the rotation of the conveying roller 132 until they fall into the discharge pipe 8 at the upper end.

[0049] like Figure 1-Figure 10As shown, a soft fur layer 134 is provided on the outer wall of the conveying roller 132, and a support bracket 135 is provided on the spiral frame 131 between adjacent conveying rollers 132. The distance between adjacent conveying rollers 132 is not greater than the diameter of the food particles in the minimum complete state. The support bracket 135 is provided to support the position between two adjacent conveying rollers 132 at a larger distance to prevent the gap from being too large and causing the complete particles to fall. The soft fur layer 134 can increase the friction of the food particles on the conveying roller 132, and at the same time increase the buffering of the particles to avoid damage during transportation.

[0050] like Figure 1-Figure 10 As shown, the spiral frame 131 is located at the center position of the outer frame 7, and the lower part of the inner part of the outer frame 7 located outside the spiral frame 131 is inclined toward the center position. A scraper 141 is slidably provided at the lower edge of the inner part of the outer frame 7, and a third motor 142 is provided below the fixed seat 113. A linkage frame 143 is provided at the output end of the third motor 142. The linkage frame 143 is assembled and connected with the upper end of the scraper 141. A drainage chamber 144 is provided below the outer frame 7, and a collecting trough 145 is provided on the working frame 1. The output end of the drainage chamber 144 is located directly above the collecting trough 145. The scraper 141 is driven to rotate by the third motor 142 to drain the particles falling on the inner edge of the outer frame 7 to the feeding end at the lower end of the spiral frame 131, and the lower end edge of the outer frame 7 is inclined to guide the particles to the spiral frame 131, and the particles are conveyed upward in conjunction with the rotation of the conveying roller 132.

[0051] like Figure 1-Figure 10 As shown, the cooling mechanism includes a condenser 151, a fan 152 and a blower head 153. The condenser 151 is laid under the spiral frame 131, the fan 152 is arranged on the working frame 1, the inner wall of the outer frame 7 is provided with an air duct 154, and the blower head 153 is provided with multiple and evenly connected to the air duct 154. The output end of the fan 152 is connected to the end face of the air duct 154. By driving the fan 152, air is blown into the outer frame 7 through the blower head 153, and the extruded particles are cooled by air. In combination with the condenser 151, the particles in the transportation process can be cooled.

[0052] Working principle:

[0053] Step S1, introducing the raw material into the screw extruder 2 at a uniform speed, compressing the raw material into the connecting pipe 3 through the screw extruder 2, introducing the raw material into each branch pipe 612 through the branch pipe 611 of the connecting pipe 3, and extruding the raw material from the cavity of the granulation mold 4 at the corresponding branch pipe 612, rotating the cutter 5 to cut the extruded raw material into granules;

[0054] Step S2: The extruded food particles fall evenly into the outer frame 7 under the guidance of the guide plate 114, and are gradually conveyed to the top of the spiral conveying mechanism by the rotation of the spiral conveying mechanism at the bottom of the outer frame 7. During the conveying process, particles that are too small are missed between adjacent conveying rollers 132, and complete particles are conveyed to the uppermost end and fall from the discharge pipe 8.

[0055] Step S3, by driving the fan 152, blowing air into the outer frame 7 through the air blower head 153, the extruded particles are cooled by air;

[0056] Step S4, particles of uniform size are discharged from the discharge pipe 8 and fall onto the conveyor belt 9 for outward transportation, while broken particles fall into the collecting tank 145 for collection.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A pet food granulation device, comprising a working frame (1), a screw extruder (2), a connecting pipe (3), a granulation mold (4) and a cutter (5), wherein the screw extruder (2) is arranged on the working frame (1) and the output end is connected to one end of the connecting pipe (3), the granulation mold (4) is tightly sleeved on the output end of the connecting pipe (3), and the cutter (5) is rotatably arranged on the outer wall of the granulation mold (4), characterized in that: The output end of the connecting pipe (3) is connected to a branch pipe (612) through a branch pipe (611). A plurality of branch pipes (612) are provided and are tightly fitted with the inner wall of the granulating mold (4). An outer frame (7) is provided on the working frame (1). The granulating mold (4) and the cutter (5) are both located inside the outer frame (7). The granulating mold (4) and the outer frame (7) are detachably assembled and connected. The granulating mold (4) is composed of a plurality of templates (411). The templates (411) correspond to the branch pipes (612) one by one. A plurality of cutters (5) are evenly provided. A spiral conveying mechanism is provided at the lower part of the inner part of the outer frame (7). The output end of the spiral conveying mechanism is located at the center and the highest point. A discharge pipe (8) is provided below the output end of the spiral conveying mechanism. A conveyor belt (9) is provided on the working frame (1). The discharge pipe (8) is located directly above the conveyor belt (9). A cooling mechanism is provided in the outer frame (7).

2. A pet food granulation equipment according to claim 1, characterized in that: The screw extruder (2) is horizontally arranged on the working frame (1), the connecting pipe (3) is vertically arranged on the working frame (1) and is vertically connected to the screw extruder (2), and a drainage cone (10) is arranged at the lower part of the connecting pipe (3).

3. A pet food granulation equipment according to claim 2, characterized in that: The output end of the branch pipe (611) is arranged toward the lower side wall of the connecting pipe (3); the branch pipe (612) is arranged in an arc-shaped structure and its two ends are sealed to the inner wall of the granulation mold (4); the output end of the branch pipe (611) is connected and arranged in the upper middle part of the branch pipe (612); and the space at the lower end of the branch pipe (612) is smaller than the space at the upper end.

4. A pet food granulation device according to claim 3, characterized in that: An end cover (112) and a fixing seat (113) are respectively provided above and below the template (411) through a sealing gasket (111), a guide plate (114) is provided on the side of the fixing seat (113), and the fixing seat (113) is assembled and connected to the inner wall of the outer frame (7) through a support frame (115). A sealing cover (116) is provided above the end cover (112), and the outer wall of the sealing cover (116) is threadedly connected to the inner wall of the outer frame (7), and an installation space is reserved between adjacent branch pipes (612). End plates (117) are provided at both ends of the template (411), and the end plate (117) is slidably arranged between the two branch pipes (612).

5. A pet food granulating device according to claim 4, characterized in that: A connecting ring (121) is slidably provided above and below the outer side of the granulation mold (4); a fixing frame (122) is provided between the two connecting rings (121); the tool (5) is obliquely arranged on the fixing frame (122); the blade of the tool (5) is slidably arranged with the granulation mold (4); the connecting ring (121) is provided with a gear ring (123) through a bracket (124); the gear ring (123) is rotatably connected to the inner wall of the outer frame (7); a gear (125) is rotatably provided on the side wall of the outer frame (7); the gear (125) is driven to rotate by a first motor (126); and the gear (125) is meshed with the gear ring (123).

6. A pet food granulating device according to claim 5, characterized in that: The spiral conveying mechanism comprises a spiral frame (131) and a conveying roller (132); the spiral frame (131) is arranged in a spiral shape, and the spiral diameter at the upper end is smaller than the spiral diameter at the lower end; a plurality of conveying rollers (132) are evenly arranged and the two ends are respectively rotatably connected to the spiral frame (131); the end faces of adjacent conveying rollers (132) are linked by a chain, and the end face of a lower conveying roller (132) is driven to rotate by a second motor (133).

7. A pet food granulating device according to claim 6, characterized in that: The outer wall of the conveying roller (132) is provided with a soft fur layer (134), and a support bracket (135) is provided on the spiral frame (131) between adjacent conveying rollers (132), and the distance between adjacent conveying rollers (132) is not greater than the diameter of food particles in the minimum complete state.

8. A pet food granulating device according to claim 7, characterized in that: The spiral frame (131) is located at the center of the outer frame (7); the lower part of the inner part of the outer frame (7) located outside the spiral frame (131) is inclined toward the center; a scraper (141) is slidably provided at the lower edge of the inner part of the outer frame (7); a third motor (142) is provided below the fixed seat (113); a linkage frame (143) is provided at the output end of the third motor (142); the linkage frame (143) is assembled and connected to the upper end of the scraper (141); a drainage chamber (144) is provided below the outer frame (7); a collecting trough (145) is provided on the working frame (1); and the output end of the drainage chamber (144) is located directly above the collecting trough (145).

9. A pet food granulating device according to claim 8, characterized in that: The cooling mechanism comprises a condenser (151), a fan (152) and a blower head (153); the condenser (151) is laid below the spiral frame (131); the fan (152) is arranged on the working frame (1); an air duct (154) is arranged on the inner wall of the outer frame (7); a plurality of the blower heads (153) are arranged and evenly connected on the air duct (154); and the output end of the fan (152) is connected to the end face of the air duct (154).

10. A method for manufacturing a pet food granulating device, characterized in that: A pet food granulating device according to any one of claims 1 to 9, comprising the following steps: Step S1, introducing the raw material into the screw extruder (2) at a uniform speed, compressing the raw material into the connecting pipe (3) through the screw extruder (2), introducing the raw material into each branch pipe (612) through the branch pipe (611) of the connecting pipe (3), and extruding the raw material from the cavity of the granulation mold (4) at the corresponding branch pipe (612), and rotating the cutter (5) to cut the extruded raw material into granules; Step S2, the extruded food particles fall evenly into the outer frame (7) under the guidance of the guide plate (114), and are gradually conveyed to the top of the spiral conveying mechanism through the rotation of the spiral conveying mechanism at the bottom of the outer frame (7). During the conveying process, particles that are too small are missed between adjacent conveying rollers (132), and complete particles are conveyed to the uppermost end and fall from the discharge pipe (8); Step S3, driving the fan (152) to blow air into the outer frame (7) through the air blower head (153) to cool the extruded particles; Step S4: Particles of uniform size are discharged from the discharge pipe (8) and fall onto the conveyor belt (9) for outward transportation, while broken particles fall into the collecting tank (145) for collection.

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