Puffing device for pet food

Abstract

According to the puffing device for the pet food disclosed by the invention, when a first motor is started, a rotating rod drives a cutting knife to rotate so as to continuously crush materials falling in a feeding hopper. Meanwhile, the extension end of the rotating rod drives the reciprocating screw rod to rotate, so that the cotton brush axially reciprocates along the conveying pipe. The water pump conveys cooling water in the water tank to the water spraying plate to form a mist-shaped water curtain, and the cotton brush evenly smears water on the surface of the pipe wall in the moving process. By means of the linkage design, anti-blocking operation and cooling treatment are conducted synchronously, and rotation kinetic energy of the rotating rod is converted into cutting kinetic energy and smearing mechanical energy at the same time. The spraying water forms a uniform water film under the smearing action of the cotton brush, and heat is evaporated. According to the technical scheme, hardened materials formed at the feeding port are crushed by the rotating blades immediately. A water film formed on the outer wall of the conveying pipe takes away heat through continuous evaporation, and the reciprocating motion of the cotton brush further ensures the heat dissipation uniformity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pet food processing equipment, in particular to an expansion device for pet food production, which is improved in terms of anti-blocking and temperature control during material conveying. BACKGROUND

[0002] Currently, pet food expansion machines are mainly divided into single-screw expansion machines and double-screw expansion machines, and can be divided into dry expansion methods and steam expansion methods according to process differences. The core working principle is to set the optimal pressure, temperature and moisture parameters to make the material expand by being extruded and rubbed by the spiral blade in the conveying pipe.

[0003] The typical structure includes a material receiving feed hopper, a conveying pipe with built-in spiral blades to push the material, and a motor to drive the rotation of the spiral blades to generate extrusion pressure.

[0004] In actual production, the existing expansion device has the following defects:

[0005] (1) Feeding port blocking problem:

[0006] Due to the significant size difference between the hopper and the feeding port, different materials are prone to form a hardening at the feeding port under the action of gravity (such as high-viscosity materials being tightly compacted due to their own gravity) or lose flowability due to excessive inter-particle friction, causing feeding to be interrupted. This problem forces frequent shutdowns for dredging during production, severely reducing production efficiency.

[0007] (2) Overheating problem during conveying:

[0008] When the material is strongly extruded and rubbed by the spiral blade in the conveying pipe, mechanical energy is continuously converted into heat energy, causing the temperature of the conveying pipe wall to rise sharply. The overheated environment can change the protein denaturation temperature threshold of the material, affecting the nutritional ingredients and taste quality of the pet food.

[0009] Therefore, it is particularly important to provide an improved expansion device for pet food based on the deficiencies of the prior art. SUMMARY

[0010] The technical problem solved by the present application is to overcome the defects in the prior art and provide an expansion device for pet food.

[0011] The present application solves the above technical problems by the following technical solutions:

[0012] An expansion device for pet food, comprising a base (1), a conveying pipe (2) arranged on the base (1), and a feed hopper (3) fixed to the top of the conveying pipe (2), characterized in that:

[0013] One side of the feeding funnel (3) is provided with an anti-blocking mechanism, and the outer wall of the conveying pipe (2) is provided with a cooling system.

[0014] The anti-blocking mechanism comprises:

[0015] A first motor (4) is fixed to the outer side of the feeding funnel (3);

[0016] A rotating rod (5) penetrates the feeding funnel (3) and is connected to the output end of the first motor (4);

[0017] A plurality of cutting knives (6) are uniformly arranged on the surface of the rotating rod (5);

[0018] The cooling system comprises:

[0019] A water tank (11) is fixed to the top of the conveying pipe (2);

[0020] A water pump (12) is connected to the water tank (11) at the water inlet end, and is connected with a water spraying plate (13) at the water outlet end, and the water spraying plate (13) is configured to spray water in the water tank (11) to the outer surface of the conveying pipe (2) for cooling;

[0021] A reciprocating coating assembly comprises a frame (8) installed on the top of the conveying pipe (2) and close to the position of the feeding funnel (3), a reciprocating screw rod (7) rotatably installed in the frame (8) and driven by the extension end of the rotating rod (5), a cotton brush (9) threadedly connected to the reciprocating screw rod (7), and a sliding assembly (10) limiting the movement track of the cotton brush (9), and the reciprocating screw rod (7) can drive the cotton brush (9) to reciprocate under the cooperation of the sliding assembly (10), and the water sprayed on the surface of the conveying pipe (2) is coated. Preferably, one end of the reciprocating screw rod (7) is fixedly connected with the rotating rod (5), and the other end is rotatably supported on the inner wall of the frame (8).

[0022] Preferably, the sliding assembly (10) comprises a sliding block (101) fixed to the top of the cotton brush (9) and a sliding groove (102) formed in the inner wall of the frame (8), and the sliding block (101) and the sliding groove (102) are in sliding cooperation.

[0023] Preferably, the water tank (11) is provided with a scale window (16) on the side, the water spraying plate (13) is located directly above the conveying pipe (2) and the water outlet direction is towards the outer wall of the conveying pipe (2).

[0024] Preferably, one side of the conveying pipe (2) is provided with a second motor (14), the output end of which penetrates the conveying pipe (2) and is connected with a spiral blade (15), and the end of the spiral blade (15) is rotatably connected with the inner wall of the conveying pipe (2).

[0025] Preferably, the frame (8) side wall is provided with a heat dissipation groove, and a heat dissipation net is fixedly installed in the heat dissipation groove, and the reciprocating movement track of the cotton brush (9) covers the outer surface of the conveying pipe (2). Preferably, the bottom of the base (1) is fixedly installed with four supporting legs (17), and the four supporting legs (17) are arranged at the four corners of the bottom of the base (1), and the bottom of the supporting leg (17) is fixedly installed with a rubber antiskid pad.

[0026] Preferably, the outer surface of the feeding hopper (3) is fixedly installed with a protective shell (18), and the first motor (4) is arranged in the protective shell (18).

[0027] On the basis of common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, that is, the preferred examples of the present application are obtained.

[0028] The positive progress effect of the present application is that when the first motor of the pet food puffing device is started, the rotating rod drives the cutting knife to rotate to continuously crush the materials falling in the feeding hopper. At the same time, the extending end of the rotating rod drives the reciprocating screw rod to rotate, so that the cotton brush moves reciprocatingly along the axis of the conveying pipe. The water pump sends the cooling water in the water tank to the water spraying plate to form a mist water curtain, and the cotton brush uniformly applies water to the surface of the pipe wall during movement. The linkage design synchronizes the anti-blocking operation and the cooling treatment, and the rotating kinetic energy of the rotating rod is simultaneously converted into cutting kinetic energy and coating mechanical energy. The spraying water forms a uniform water film under the coating action of the cotton brush, and the evaporation heat is removed. Through the above technical scheme, the material board formed at the feeding port is immediately crushed by the rotating blade. The water film formed on the outer wall of the conveying pipe is removed by continuous evaporation, and the reciprocating movement of the cotton brush further ensures the uniformity of heat dissipation. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The overall structure of the pet food puffing device of the present exemplary embodiment is shown.

[0030] Figure 2 The assembly relationship of the first motor, the rotating rod, the cutting knife, the reciprocating screw rod and the cotton brush is shown. Figure 1 The local structure at A in FIG. 6 is shown.

[0031] Figure 3 The assembly relationship of the first motor, the rotating rod, the cutting knife, the reciprocating screw rod and the cotton brush is shown.

[0032] Figure 4 The position of the observation window on the water tank is shown.

[0033] BRIEF DESCRIPTION OF DRAWINGS:

[0034] 1, base; 2, conveying pipe; 3, feeding hopper; 4, first motor; 5, rotating rod; 6, cutting knife; 7, reciprocating screw rod; 8, frame; 9, cotton brush; 10, sliding assembly; 101, sliding block; 102, sliding groove; 11, water tank; 12, water pump; 13, water spraying plate; 14, second motor; 15, spiral blade; 16, observation window; 17, supporting leg; 18, protective shell. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way should be taken as any limitation on the present application and its application or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0036] It should be noted that in the claims and specification of the present patent, relationship terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation, the element defined by the statement "including one" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0037] Please refer to Figures 1-4 The present application discloses a kind of for producing pet food puffing device, including base 1 and be set on base 1 conveying pipe 2, conveying pipe 2 side fixed installation has second motor 14, second motor 14 penetrates the output end fixed installation of conveying pipe 2 has spiral blade 15, spiral blade 15 away from the end of second motor 14 and conveying pipe 2 inner wall rotationally connected, when using, second motor 14 can drive spiral blade 15 rotation, to the material in conveying pipe 2 is extruded and transported.The bottom of base 1 is fixedly installed with supporting leg 17, the number of supporting leg 17 is four, and four supporting legs 17 are respectively arranged at the four corners of the bottom of base 1, and rubber antiskid pad is fixedly installed at the bottom of supporting leg 17, the antiskid performance of rubber antiskid pad can be increased, so that equipment can be more stable when using.

[0038] Further, the top of the conveying pipe 2 is fixedly installed with a feeding hopper 3, one side of the feeding hopper 3 is fixedly installed with a first motor 4, the outer surface of the feeding hopper 3 is fixedly installed with a protective shell 18, the first motor 4 is arranged in the protective shell 18, and the protective shell 18 can protect the first motor 4 and reduce the situation that external objects bump into the first motor 4.

[0039] Please refer to Figure 1 and Figure 3 The output end of the feeding hopper 3 is fixedly installed with a rotating rod 5 penetrating through the first motor 4, and the outer surface of the rotating rod 5 is uniformly installed with a plurality of cutting knives 6. In use, the first motor 4 and the second motor 14 can be started, and then the material can be added into the feeding hopper 3. The first motor 4 can drive the rotating rod 5 to rotate, and the rotating rod 5 can drive the cutting knives 6 to rotate to cut the material, so as to reduce the blockage of the feeding hopper 3. Then, the second motor 14 can drive the spiral blade 15 to rotate to extrude and transport the material entering the conveying pipe 2.

[0040] Please refer to Figure 1 and Figure 3 One end of the rotating rod 5 away from the first motor 4 penetrates to the outside of the feeding hopper 3 and is fixedly connected with a reciprocating screw rod 7, one side of the top of the conveying pipe 2 located at the feeding hopper 3 is fixedly installed with a frame 8, one end of the reciprocating screw rod 7 is rotatably connected with the inner wall of the frame 8, the outer surface of the reciprocating screw rod 7 is threadedly connected with a cotton brush 9, the top of the cotton brush 9 is provided with a sliding assembly 10, the sliding assembly 10 comprises a sliding block 101, one side of the sliding block 101 is fixedly connected with the cotton brush 9, and the inner wall of the frame 8 is provided with a sliding groove 102 matched with the sliding block 101. The sliding block 101 and the sliding groove 102 can limit the movement range of the cotton brush 9, and can also make the cotton brush 9 move more stably.

[0041] Please refer to Figure 1 and Figure 4The top of the conveying pipe 2 is fixedly provided with a water tank 11, the inside of the water tank 11 is provided with an observation window 16, the outer side of the observation window 16 is provided with a scale line, in use, the staff can check the water level in the water tank 11 in real time through the observation window 16 and the scale line. One side of the water tank 11 is fixedly provided with a water pump 12, the water inlet end of the water pump 12 penetrates into the inside of the water tank 11, the water outlet end of the water pump 12 penetrates into the inside of the frame 8 and is fixedly connected with a water spraying plate 13, the inside of the frame 8 is provided with a heat dissipation groove, and the inner wall of the heat dissipation groove is fixedly provided with a heat dissipation net, in use, the heat generated in the inside of the frame 8 can be transferred to the outside through the heat dissipation groove and the heat dissipation net. The water pump 12 can spray the water in the water tank 11 to the outer surface of the conveying pipe 2 for cooling, at the same time, the rotation of the rotating rod 5 can drive the reciprocating screw rod 7 to rotate, the reciprocating screw rod 7 can drive the cotton brush 9 to reciprocate under the cooperation of the sliding block 101 and the sliding groove 102, the water on the surface of the conveying pipe 2 is evenly coated, and the water can take away the heat on the surface of the conveying pipe 2, so that the heat on the surface of the conveying pipe 2 is reduced.

[0042] Specifically in use, the working principle of the application is as follows:

[0043] Through the design of the base 1, the conveying pipe 2, the feeding hopper 3, the first motor 4, the rotating rod 5, the cutting knife 6, the reciprocating screw rod 7, the frame 8, the cotton brush 9, the sliding assembly 10, the sliding block 101, the sliding groove 102, the water tank 11, the water pump 12, the water spraying plate 13, the second motor 14, the spiral blade 15, the observation window 16, the supporting leg 17, the protective shell 18 and the heat dissipation net, in use, the staff can start the first motor 4 and the second motor 14, then the material can be added to the feeding hopper 3, the first motor 4 can drive the rotating rod 5 to rotate, the rotating rod 5 can drive the cutting knife 6 to rotate to cut the material, so as to reduce the blockage of the feeding hopper 3, then the second motor 14 can drive the spiral blade 15 to rotate to extrude and transport the material in the conveying pipe 2.

[0044] When the second motor 14 drives the material in the conveying pipe 2 to be extruded and transported, a certain amount of heat is generated, in use, the water pump 12 can spray the water in the water tank 11 to the outer surface of the conveying pipe 2 for cooling, at the same time, the rotation of the rotating rod 5 can drive the reciprocating screw rod 7 to rotate, the reciprocating screw rod 7 can drive the cotton brush 9 to reciprocate under the cooperation of the sliding block 101 and the sliding groove 102, the water on the surface of the conveying pipe 2 is evenly coated, and the water can take away the heat on the surface of the conveying pipe 2, so that the temperature of the conveying pipe 2 is reduced.

[0045] Therefore, the application provides the puffing device which comprises a base 1, a conveying pipe 2 and a feeding funnel 3, the feeding funnel is provided with an anti-blocking mechanism, and the outer wall of the conveying pipe 2 is provided with a cooling system. The anti-blocking mechanism comprises a first motor 4 fixed to the outer side of the feeding funnel 3, a rotating rod 5 penetrating through the feeding funnel 3 and a cutting knife 6 on the surface of the rotating rod 5. The cooling system comprises a water tank 11 at the top, a water pump 12 connected with the water tank 11, a water spraying plate 13 and a reciprocating smearing assembly driven by the extended end of the rotating rod 5, which comprises a frame 8, a reciprocating screw rod 7, a cotton brush 9 and a sliding assembly 10.

[0046] When the first motor 4 is started, the rotating rod 5 drives the cutting knife 6 to rotate, continuously crushing the materials falling in the feeding funnel 3. Meanwhile, the extended end of the rotating rod 5 drives the reciprocating screw rod 7 to rotate, so that the cotton brush 9 moves reciprocally along the axial direction of the conveying pipe 2. The water pump 12 delivers the cooling water in the water tank 11 to the water spraying plate 13 to form a misty water curtain, and the cotton brush 9 uniformly smears the water on the surface of the pipe wall in the moving process. The linkage design synchronously performs the anti-blocking operation and the cooling treatment, and the rotating kinetic energy of the rotating rod 5 is simultaneously converted into the cutting kinetic energy and the smearing mechanical energy. The spraying water forms a uniform water film under the smearing action of the cotton brush 9, and the evaporation heat is taken away.

[0047] Through the above technical scheme, the material board formed at the feeding port is immediately crushed by the rotating blade. The water film formed on the outer wall of the conveying pipe 2 takes away the heat through continuous evaporation, so that the temperature of the pipe wall is stably below the critical value of the protein denaturation of the materials.

[0048] Further, one end of the reciprocating screw rod 7 is fixedly connected with the rotating rod 5, and the other end is rotationally supported on the inner wall of the frame 8.

[0049] Specifically, the one end of the reciprocating screw rod 7 is fixedly connected with the rotating rod 5 by a rigid connection mode, for example, a shaft coupling or welding mode, so that the rotating power of the rotating rod 5 can be directly transmitted to the reciprocating screw rod 7. The connection mode avoids the energy loss in the power transmission process, and ensures the synchronous operation of the cutting knife 6 and the reciprocating smearing assembly.

[0050] Specifically, the other end is rotationally supported on the inner wall of the frame 8 by a bearing or shaft sleeve structure, for example, a rolling bearing or sliding bearing, so as to realize the rotation support. The support mode forms a double support point structure, limits the radial deviation of the reciprocating screw rod 7 in the rotating process, and improves the rotating stability.

[0051] Specifically, the rotating rod 5 is fixedly connected to drive the reciprocating screw rod 7 to rotate synchronously when driving the cutting knife 6 to rotate. The free end of the reciprocating screw rod 7 is supported by the rotating support in the inner wall of the frame 8 to form a stable rotating axis, so that the reciprocating screw rod 7 does not produce eccentric swing in the rotating process due to the vibration of the rotating rod 5. The cotton brush 9 is connected to the reciprocating screw rod 7 through threads, and realizes reciprocating movement along the outer wall of the conveying pipe 2 by the rotation of the reciprocating screw rod 7 and the trajectory limitation of the sliding assembly 10.

[0052] Through the above technical scheme, the application solves the problem of poor operation of the anti-blocking mechanism caused by unstable driving of the reciprocating screw rod 7, ensures the synchronous and efficient operation of the cutting knife 6 and the reciprocating coating assembly, simplifies the structure of the device, reduces the risk of component wear caused by vibration, and improves the overall operation reliability of the puffing device.

[0053] The sliding assembly 10 further proposed by the application includes a sliding block 101 fixed to the top of the cotton brush 9 and a sliding groove 102 opened in the inner wall of the frame 8, and the sliding block 101 and the sliding groove 102 are in sliding cooperation.

[0054] The sliding block 101 is a sliding component rigidly connected to the top of the cotton brush 9, which forms stable contact with the sliding groove 102 in the sliding process and limits the movement degree of freedom of the cotton brush 9. The sliding groove 102 is a guide structure opened in the inner wall of the frame 8, which can be processed by milling or stamping process, such as U-shaped groove or T-shaped groove, and the length direction is parallel to the axis of the reciprocating screw rod 7. The inner wall of the sliding groove 102 and the sliding surface of the sliding block 101 are in gap cooperation to ensure that the sliding block 101 moves along the predetermined trajectory.

[0055] Specifically, the top of the cotton brush 9 is fixed with the sliding block 101 by bolts or welding, and the sliding block 101 is embedded in the sliding groove 102 in the inner wall of the frame 8. When the reciprocating screw rod 7 rotates, the cotton brush 9 moves along the length direction of the sliding groove 102 under the driving of the screw rod thread. The inner wall of the sliding groove 102 restricts the lateral displacement of the sliding block 101, preventing the cotton brush 9 from deviating due to the radial force generated by the rotation of the screw rod.

[0056] Through the above technical scheme, the application solves the problem of uneven distribution of cooling water caused by unstable movement trajectory of the cotton brush 9. At the same time, the sliding groove 102 is directly processed in the inner wall of the frame 8, without the need for additional guide components, and the utilization rate of the structure space is improved.

[0057] The water tank 11 further proposed by the application is provided with a viewing window 16 with scale lines on the side surface, and the water spraying plate 13 is located directly above the conveying pipe 2 and the water outlet direction is towards the outer wall of the conveying pipe 2.

[0058] The scale window 16 refers to a transparent window with measurement marks arranged on the side of the water tank 11, which can be realized by inlaying tempered glass and printing waterproof ink scale lines on the glass surface, and is used to display the water level in the water tank 11 in real time.

[0059] The water spraying plate 13 is arranged above the conveying pipe 2 and the water outlet direction is towards the outer wall of the conveying pipe 2, which means that the water spraying plate 13 is installed in the vertical projection area of the top of the conveying pipe 2, and can be realized by using an inclined jet hole array design, so that the water flow covers the pipe wall surface at a preset angle.

[0060] Specifically, the operator can intuitively determine the remaining water quantity in the water tank 11 through the scale line of the observation window 16, and supplement the cooling water in time when the water level is below the preset threshold, so as to avoid interruption of the spraying due to insufficient water quantity. When the water spraying plate 13 is arranged above the conveying pipe 2, the water flow forms a vertical downward impact force under the action of gravity, and cooperates with the directional jet hole to make the water flow uniformly adhere to the pipe wall surface, forming a continuous water film covering, which reduces the water splashing and local uneven wetting phenomenon compared with the lateral spraying mode.

[0061] Through the above technical scheme, the present application realizes real-time visual monitoring of the water quantity of the water tank 11, ensures continuous and stable supply of cooling water, and at the same time optimizes the spatial position and water outlet direction of the water spraying plate 13, enhances the uniformity of the water flow covering the outer wall of the conveying pipe 2, and effectively maintains the pipe wall temperature within a safe threshold range.

[0062] The present application further provides a second motor 14 arranged on one side of the conveying pipe 2, the output end of the second motor 14 penetrates the conveying pipe 2 and is connected with the spiral blade 15, and the end of the spiral blade 15 is rotationally connected with the inner wall of the conveying pipe 2.

[0063] The second motor 14 refers to a power source independent of other driving components, and the output shaft thereof is rigidly connected with the central shaft of the spiral blade 15 through a shaft coupling, so as to provide independent driving force for the spiral blade 15.

[0064] The rotationally connected end of the spiral blade 15 with the inner wall of the conveying pipe 2 means that a bearing structure is arranged between the blade end and the pipe wall, which can be realized by using a deep groove ball bearing or a sliding bearing, the outer ring of the bearing is fixedly connected with the inner wall of the conveying pipe 2, and the inner ring is interference-fitted with the shaft body at the end of the spiral blade 15, so that the spiral blade 15 is radially positioned during rotation.

[0065] Specifically, the second motor 14 directly drives the spiral blade 15 to rotate, so that the material in the conveying pipe 2 is subjected to a continuous and controllable propelling force. The end of the spiral blade 15 is connected to the pipe wall through a bearing, which reduces the contact area between the blade and the pipe wall during rotation, thereby reducing the frictional resistance. When the second motor 14 operates at a set rotational speed, the extrusion force of the spiral blade 15 on the material remains stable, avoiding material accumulation caused by power fluctuations; at the same time, the bearing structure keeps the spiral blade 15 rotation track stable, avoiding local friction heating caused by eccentric motion.

[0066] Through the above technical solution, the present application solves the problem of low material propelling efficiency caused by insufficient driving of the spiral blade 15, ensures that the material is uniformly pressed in the conveying pipe 2; at the same time, reduces the heat generated by the friction between the spiral blade 15 and the pipe wall, avoids the destruction of the nutritional components caused by local overheating, thereby improving the stability of the puffing process and the consistency of the product quality.

[0067] The present application further provides that the side wall of the frame 8 is provided with a heat dissipation groove, and a heat dissipation net is fixedly installed in the groove. The reciprocating movement track of the cotton brush 9 covers the outer surface of the conveying pipe 2.

[0068] The heat dissipation groove refers to an opening structure provided on the side wall of the frame 8, which can be realized by a rectangular or circular through hole, and is used to form an air flow channel to accelerate heat dissipation.

[0069] The heat dissipation net refers to a mesh structure fixed in the heat dissipation groove, which can be realized by a metal wire woven mesh or a punched plate, and is used to block foreign matter from entering the inside of the frame 8 while maintaining the air flow path.

[0070] The reciprocating movement track of the cotton brush 9 covering the outer surface of the conveying pipe 2 means that the movement range of the cotton brush 9 driven by the driving mechanism completely wraps the outer wall of the conveying pipe 2, which can be realized by matching the stroke length of the reciprocating screw rod 7 with the axial length of the conveying pipe 2, to ensure that the cotton brush 9 covers the entire area of the pipe wall surface.

[0071] Specifically, the combination of the heat dissipation groove and the heat dissipation net forms a forced convection channel, and external air enters the inside of the frame 8 through the heat dissipation net, accelerating the passive diffusion of heat from the outer surface of the conveying pipe 2. The cotton brush 9 evenly spreads the water sprayed by the water spraying plate 13 to the outer wall of the conveying pipe 2 during reciprocating movement, and continuously absorbs the heat of the pipe wall during the evaporation process of the water, while the coverage track of the cotton brush 9 avoids the occurrence of local non-spraying areas.

[0072] Through the above technical solution, the present application realizes uniform diffusion of heat from the outer surface of the conveying pipe 2, avoiding the phenomenon of local temperature being too high caused by mechanical energy being converted into heat. The improvement of the coverage range of the water spreading enhances the evaporation heat dissipation efficiency, ensures that the overall temperature of the conveying pipe 2 is controlled within a reasonable range, and maintains the stability of the nutritional components during the processing of pet food.

[0073] The base 1 is further provided with four supporting legs 17 fixedly installed at the bottom of the base 1, and the supporting legs 17 are arranged at four corners of the bottom of the base 1 respectively, and rubber anti-skid pads are fixedly installed at the bottom of the supporting legs 17.

[0074] The supporting leg 17 is a load-bearing structure of the supporting device body, which can be implemented in the form of a metal cylinder welded at four corners of the base 1, and a stable supporting surface is formed by the symmetrically distributed four supporting legs 17. The vibration energy generated when the device is running is transmitted to the ground through the supporting legs 17, the longitudinal vibration component is absorbed by the elastic deformation of the rubber anti-skid pads, and the static friction force generated by the surface texture of the rubber anti-skid pads counteracts the tendency of horizontal displacement.

[0075] Through the above technical solution, the position deviation phenomenon during the operation of the device is effectively inhibited, the compression and rebound characteristics of the rubber material ensure that the supporting legs 17 are always in contact with the ground, and the continuous and stable expansion process is ensured.

[0076] The application further provides a protective shell 18 fixedly installed on the outer surface of the feeding funnel 3, and the first motor 4 is arranged inside the protective shell 18.

[0077] Specifically, the protective shell 18 and the outer surface of the feeding funnel 3 form a closed connection structure, so that the first motor 4 is completely contained in the inner cavity of the protective shell 18. When the material enters the conveying pipe 2 through the feeding funnel 3, the protective shell 18 can also block the invasion of external dust, water vapor and foreign matters into the internal space, so that the first motor 4 operates in a relatively clean environment.

[0078] Through the above technical solution, the application can also effectively prevent the erosion of the internal elements of the first motor 4 by dust and liquid in the external environment, avoid the motor stoppage failure caused by the foreign matter being stuck or the external force impact, thereby ensuring the continuous operation of the cutting knife 6 to maintain the material flowability, prolonging the service life of the motor and reducing the maintenance frequency.

Claims

1. An extrusion device for pet food, characterized in that, The product comprises a base (1), a conveying pipe (2) disposed on the base (1), and a feed funnel (3) fixed to the top of the conveying pipe (2), characterized in that: The feed hopper (3) is provided with an anti-blocking mechanism on one side, and the outer wall of the conveying pipe (2) is provided with a cooling system; The anti-blocking mechanism includes: The first motor (4) is fixed to the outside of the feed hopper (3); The rotating rod (5) passes through the feed hopper (3) and is connected to the output end of the first motor (4); Multiple cutting blades (6) are evenly distributed on the surface of the rotating rod (5); The cooling system includes: A water tank (11) is fixed to the top of the conveying pipe (2); A water pump (12) has its inlet end connected to the water tank (11) and its outlet end connected to a spray plate (13). The spray plate (13) is configured to spray the water in the water tank (11) onto the outer surface of the delivery pipe (2) for cooling. The reciprocating coating assembly includes a frame (8) mounted on the top of the conveying pipe (2) and near the feed funnel (3), a reciprocating screw (7) rotatably mounted in the frame (8) and driven by the extension end of the rotating rod (5), a cotton brush (9) threaded to the reciprocating screw (7), and a sliding assembly (10) that restricts the movement trajectory of the cotton brush (9). The reciprocating screw (7) can drive the cotton brush (9) to reciprocate under the cooperation of the sliding assembly (10) to coat the water sprayed onto the surface of the conveying pipe (2).

2. The extrusion device for pet food as described in claim 1, characterized in that, One end of the reciprocating lead screw (7) is fixedly connected to the rotating rod (5), and the other end is rotatably supported on the inner wall of the frame (8).

3. The extrusion device for pet food as described in claim 2, characterized in that, The sliding assembly (10) includes a slider (101) fixed to the top of the cotton brush (9) and a groove (102) opened on the inner wall of the frame (8), wherein the slider (101) and the groove (102) are slidably engaged.

4. The extrusion device for pet food as described in claim 2, characterized in that, The water tank (11) has an observation window (16) with scale lines on its side, and the water spray plate (13) is located directly above the conveying pipe (2) with the water outlet direction facing the outer wall of the conveying pipe (2).

5. The extrusion device for pet food as described in claim 2, characterized in that, A second motor (14) is provided on one side of the conveying pipe (2), and its output end passes through the conveying pipe (2) and is connected to a spiral blade (15). The end of the spiral blade (15) is rotatably connected to the inner wall of the conveying pipe (2).

6. The extrusion device for pet food as described in claim 1, characterized in that, The frame (8) has a heat dissipation groove on its side wall, and a heat dissipation mesh is fixedly installed in the heat dissipation groove. The reciprocating movement trajectory of the cotton brush (9) covers the outer surface of the delivery pipe (2).

7. The extrusion device for pet food as described in claim 1, characterized in that, The base (1) is fixedly equipped with four legs (17), and the four legs (17) are respectively located at the four corners of the bottom of the base (1). The bottom of the legs (17) is fixedly equipped with rubber anti-slip pads.

8. The puffing device for pet food as described in claim 1, characterized in that, A protective shell (18) is fixedly installed on the outer surface of the feed hopper (3), and the first motor (4) is located inside the protective shell (18).

Images