A pet freeze-dried food pre-freezing device

Abstract

The utility model discloses a kind of pet freeze-dried food pre-freezing equipment, belong to pet freeze-dried food processing field, including pre-freezing cabinet, the front of pre-freezing cabinet is hinged with sealing door, the top of pre-freezing cabinet inner chamber is fixedly connected with evaporator, the bottom of pre-freezing cabinet inner chamber is fixedly connected with underframe, the top of underframe is slidably connected with discharging tray, the inside of pre-freezing cabinet is equipped with flattening assembly, the flattening assembly includes gear rotationally connected on the inner wall of pre-freezing cabinet side, the side of pre-freezing cabinet inner chamber is fixedly connected with fixed column, the outside of fixed column is slidably connected with linkage arm;By setting the pure mechanical linkage mechanism directly driven by sealing door opening and closing, operation action is converted into the reciprocating motion of flattening roller, this design does not need external power supply or control system, can automatically complete rolling and spreading of material during door closing process, simple structure, reliable operation, effectively reduce equipment cost and energy consumption.

Description

Technical Field

[0001] This utility model belongs to the field of pet freeze-dried food processing technology, specifically relating to a pre-freezing device for pet freeze-dried food. Background Technology

[0002] Freeze-dried pet food is increasingly favored by consumers because it can retain the nutrition and flavor of ingredients to the greatest extent. The pre-freezing process is crucial in its production. It requires the raw materials to be frozen and shaped rapidly at extremely low temperatures to form the solid skeleton required for subsequent vacuum freeze-drying. The uniformity and speed of pre-freezing directly determine the quality of the final product and production efficiency. In actual production, after pet food raw materials (such as meat paste, meat slurry, etc.) are poured into the trays of pre-freezing equipment, they often pile up unevenly due to fluidity or manual operation. This unevenness will cause the material to be of different thicknesses when freezing, and the heat conduction efficiency of thin and thick parts will be greatly different. This will not only prolong the overall freezing time and increase the energy consumption of the equipment, but may also cause inconsistent ice crystal growth, damage the product texture, and affect rehydration. To address the issue of material leveling, existing technologies have several solutions, such as using independent electric scrapers or rolling devices to level the material after feeding. However, these solutions typically require additional drive motors, sensors, and control systems, which not only increases the manufacturing cost and electrical complexity of the equipment but also extends the production cycle by adding an independent process. Another common approach is to rely on manual leveling using tools, but this not only increases labor costs and intensity but also makes it difficult to guarantee the uniformity and consistency of hygiene standards for each operation and cannot be efficiently integrated with automated production lines. Therefore, this invention provides a pre-freezing device for freeze-dried pet food. Utility Model Content

[0003] The purpose of this invention is to provide a pre-freezing device for freeze-dried pet food to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pre-freezing device for freeze-dried pet food, including a pre-freezing box, a sealing door hinged to the front of the pre-freezing box, an evaporator fixedly connected to the top of the inner cavity of the pre-freezing box, a base frame fixedly connected to the bottom of the inner cavity of the pre-freezing box, a feeding tray slidably connected to the top of the base frame, and a flattening assembly provided inside the pre-freezing box, the flattening assembly including a gear rotatably connected to the inner wall of one side of the pre-freezing box.

[0005] In a preferred embodiment, a fixed column is fixedly connected to one side of the inner cavity of the pre-freezing box, a linkage arm is slidably connected to the outside of the fixed column, and a return spring is sleeved on the outside of the fixed column between one end of the fixed column and one end of the linkage arm.

[0006] In a preferred embodiment, the top of the linkage arm is provided with transmission teeth that mesh with gears, and the outward end of the linkage arm is rotatably connected to a swing rod, the other end of which is rotatably connected to a sealing door.

[0007] In a preferred embodiment, a cam is rotatably connected to the surface of the gear, and a rotating shaft is rotatably connected to the edge of the cam.

[0008] In a preferred embodiment, auxiliary plates are fixedly connected to both sides of the inner wall of the pre-freezing box, and swing arms are rotatably connected to the ends of the auxiliary plates. Slide grooves are provided inside the swing arms, and the rotating shaft is located inside the slide grooves.

[0009] In a preferred embodiment, the bottom ends of the two swing arms are rotatably connected to a flattening roller, and the surface of the flattening roller is provided with multiple sets of equidistant annular conical pressure hole protrusions.

[0010] In a preferred embodiment, both ends of the flattening roller are rotatably connected to sliding plates, and each swing arm is provided with a guide post on the side facing the sliding plate. The sliding plate is slidably connected to the outside of the guide post, and a compression spring is sleeved on the outside of the guide post.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This pet freeze-dried food pre-freezing equipment uses a purely mechanical linkage mechanism directly driven by the opening and closing of a sealed door to convert the operation into the reciprocating motion of the flattening roller. This design does not require an external power supply or control system and can automatically complete the rolling and flattening of materials during the door closing process. It has a simple structure, reliable operation, and effectively reduces equipment costs and energy consumption. This equipment improves pre-freezing efficiency and uniformity by setting conical pressure hole protrusions on the surface of the flattening roller, which forms a regular air-permeable structure on the surface of the material while flattening it. Attached Figure Description

[0012] Figure 1 This is a front view of the structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the flattening components. Figure 4 for Figure 2 Enlarged diagram of point A.

[0013] In the diagram: 1. Pre-freezing box; 2. Sealed door; 201. Swing rod; 3. Evaporator; 4. Base frame; 5. Discharge tray; 6. Linkage arm; 601. Transmission gear; 602. Fixed column; 603. Return spring; 604. Gear; 605. Cam; 606. Rotating shaft; 7. Flattening roller; 701. Pressing hole protrusion; 702. Sliding plate; 703. Compression spring; 704. Guide column; 8. Auxiliary plate; 801. Swing arm; 802. Slide groove. Detailed Implementation

[0014] The present invention will be further described below with reference to the embodiments.

[0015] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0016] Please see Figures 1-4 This embodiment provides a pre-freezing device for freeze-dried pet food, which includes a pre-freezing box 1. A sealing door 2 is hinged to the front of the pre-freezing box 1. An evaporator 3 is fixedly connected to the top of the inner cavity of the pre-freezing box 1. A base frame 4 is fixedly connected to the bottom of the inner cavity of the pre-freezing box 1. A feeding tray 5 is slidably connected to the top of the base frame 4. A flattening assembly is provided inside the pre-freezing box 1. The flattening assembly includes a gear 604 rotatably connected to the inner wall of one side of the pre-freezing box 1. A fixing column 602 is fixedly connected to one side of the inner cavity of the pre-freezing box 1. A linkage arm 6 is slidably connected to the outside of the fixing column 602. A return spring 603 is sleeved on the outside of the fixing column 602 and located between one end of the fixing column 602 and one end of the linkage arm 6. A transmission tooth 601 that meshes with the gear 604 is provided at the top of the linkage arm 6. A swing rod 201 is rotatably connected to the outward end of the linkage arm 6. The other end of the swing rod 201 is rotatably connected to the sealing door 2. When the operator opens the sealing door 2 outward, the sealing door 2 rotates around its hinge point and pulls the swing rod 201 connected to it. The swing rod 201 drives the linkage arm 6 to overcome the elastic force of the return spring 603 and slide along the fixed column 602 towards the outside of the pre-freezing box 1. The transmission gear 601 at the top of the linkage arm 6 moves accordingly and drives the gear 604 meshing with it to rotate. The gear 604 drives the cam 605 connected to it to rotate synchronously. The rotation shaft 606 at the edge of the cam 605 rotates with it and moves in the slide groove 802 of the swing arm 801, thereby pushing the two swing arms 801 to swing upward with their connection point with the auxiliary plate 8 as the axis. Finally, the flattening roller 7, which is rotatably connected to the bottom of the two swing arms 801, is lifted and moved backward away from the material tray 5. This process uses the operation of opening and closing the door as the only power source. The position of the flattening roller 7 is automatically adjusted by components such as the purely mechanical linkage gear 604 and cam 605. No external power or control is required, realizing an energy-saving and reliable adaptive preparation action.

[0017] A cam 605 is rotatably connected to the surface of gear 604, and a rotating shaft 606 is rotatably connected to the edge of cam 605. Auxiliary plates 8 are fixedly connected to both sides of the inner wall of pre-freezing box 1. A swing arm 801 is rotatably connected to the end of the auxiliary plate 8. A sliding groove 802 is opened inside the swing arm 801. The rotating shaft 606 is located inside the sliding groove 802. A flattening roller 7 is rotatably connected to the bottom end of the two swing arms 801. A set of annular conical pressure hole protrusions 701 are evenly distributed on the surface of the flattening roller 7. A sliding plate 702 is rotatably connected to both ends of the flattening roller 7. A guide post 704 is provided on the side of each swing arm 801 facing the sliding plate 702. The sliding plate 702 is slidably connected to the outside of the guide post 704, and a compression spring 703 is sleeved on the outside of the guide post 704. When the operator closes the sealing door 2, the above actions are reversed. The return spring 603 pushes the linkage arm 6 to reset, and its transmission gear 601 drives the gear 604 to rotate in the opposite direction, thereby driving the cam 605 to rotate. The cam 605 drives the swing arm 801 to swing downward through the cooperation of the rotating shaft 606 and the slide groove 802, so that the flattening roller 7 descends and moves forward. The sliding plates 702 at both ends of the flattening roller 7 can slide along the guide post 704. The compression spring 703 provides buffering and constant pressure to ensure that the flattening roller 7 can contact the material gently and stably. As the sealing door 2 is completely closed, the flattening roller 7 finally rolls and compacts the material in the discharge tray 5. The conical pressure hole protrusions 701 on its surface form regular air-permeable pits on the material. In this process, while flattening the material, the conical pressure hole protrusions 701 complete the flattening and air-permeable structure formation in one go, which significantly increases the heat exchange area, thereby improving the pre-freezing speed and uniformity. The buffer pressure mechanism composed of the sliding plate 702, guide column 704 and compression spring 703 ensures the stability and adaptability of compaction and avoids damage to equipment or materials.

[0018] The working principle and usage process of this utility model are as follows: First, when the operator opens the sealing door 2, the sealing door 2 rotates and pulls the swing rod 201. The swing rod 201 drives the linkage arm 6 to slide outward along the fixed column 602. The transmission gear 601 on the linkage arm 6 drives the gear 604 to rotate. The gear 604 drives the cam 605 to rotate. The rotating shaft 606 on the cam 605 moves with it in the slide groove 802 of the swing arm 801, pushing the swing arm 801 to swing upward around the auxiliary plate 8, thereby lifting and moving the flattening roller 7 connected to the bottom of the swing arm 801 away from the material tray 5. When the operator closes the sealing door 2, the linkage arm 6 resets under the action of the reset spring 603, the transmission gear 601 drives the gear 604 to rotate in the opposite direction, and drives the cam 605 to rotate. The cam 605 drives the swing arm 801 to swing downward through the rotating shaft 606, so that the flattening roller 7 descends and moves forward. The sliding plates 702 at both ends of the flattening roller 7 slide along the guide post 704. The compression spring 703 provides buffer pressure. The flattening roller 7 rolls and compacts the material in the discharge tray 5. The conical pressure hole protrusions 701 on its surface form regular air-permeable pits on the material.

[0019] In the above scheme, it should be noted that: the pre-freezing box 1, evaporator 3 and conventional temperature sensors and pressure sensing elements involved in this application are all existing products or standard parts commonly used in the field. Their specific structure, connection method in the system and working principle are all existing mature technologies that are publicly available, and will not be described in detail here. It should also be noted that, in order to improve the automation and intelligence level of the equipment, the solution described in this application can be adapted to and equipped with existing general-purpose industrial controllers (or controller systems) in practical applications. The signal connection methods, control circuit layouts, and basic control logic (such as start-stop control, temperature PID regulation, etc.) between such controllers and electrical components such as the refrigeration unit, temperature sensing elements, pressure sensing elements, and status indication devices of the evaporator 3 are all existing technologies known to those skilled in the art. The low-temperature condensate exchanges heat with the outside air through the evaporator 3, vaporizes and absorbs heat to achieve refrigeration, thereby achieving the purpose of freezing food. The controllers and systems used in the freezing process are all conventional and mature products in this field. The core of the technical solution of this application lies in the innovation of the mechanical structure and does not involve the improvement of the computer program itself. Therefore, the specific software programs and algorithms used by the controller and the above-mentioned electrical components to achieve coordinated control will not be described in detail here.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pre-freezing device for freeze-dried pet food, comprising a pre-freezing chamber (1), characterized in that: The front of the pre-freezing box (1) is hinged with a sealing door (2), the top of the inner cavity of the pre-freezing box (1) is fixedly connected with an evaporator (3), the bottom of the inner cavity of the pre-freezing box (1) is fixedly connected with a base frame (4), the top of the base frame (4) is slidably connected with a material discharge tray (5), and the interior of the pre-freezing box (1) is provided with a flattening assembly, which includes a gear (604) rotatably connected to the inner wall of one side of the pre-freezing box (1).

2. The pet freeze-dried food pre-freezing equipment according to claim 1, characterized in that: A fixed column (602) is fixedly connected to one side of the inner cavity of the pre-freezing box (1). A linkage arm (6) is slidably connected to the outside of the fixed column (602). A reset spring (603) is sleeved on the outside of the fixed column (602) between one end of the fixed column (602) and one end of the linkage arm (6).

3. The pet freeze-dried food pre-freezing equipment according to claim 2, characterized in that: The top of the linkage arm (6) is provided with a transmission tooth (601) that meshes with the gear (604). The outward end of the linkage arm (6) is rotatably connected to a swing rod (201), and the other end of the swing rod (201) is rotatably connected to the sealing door (2).

4. The pet freeze-dried food pre-freezing equipment according to claim 1, characterized in that: The surface of the gear (604) is rotatably connected to a cam (605), and the edge of the cam (605) is rotatably connected to a rotating shaft (606).

5. The pet freeze-dried food pre-freezing equipment according to claim 4, characterized in that: Auxiliary plates (8) are fixedly connected to both sides of the inner wall of the pre-freezing box (1). A swing arm (801) is rotatably connected to the end of the auxiliary plate (8). A sliding groove (802) is opened inside the swing arm (801). The rotating shaft (606) is located inside the sliding groove (802).

6. The pet freeze-dried food pre-freezing equipment according to claim 5, characterized in that: The bottom ends of the two swing arms (801) are rotatably connected to a flattening roller (7), and the surface of the flattening roller (7) is provided with multiple sets of annular conical pressure hole protrusions (701) distributed at equal intervals.

7. The pet freeze-dried food pre-freezing equipment according to claim 6, characterized in that: Both ends of the flattening roller (7) are rotatably connected to sliding plates (702). Each swing arm (801) is provided with a guide post (704) on the side facing the sliding plate (702). The sliding plate (702) is slidably connected to the outside of the guide post (704), and a compression spring (703) is sleeved on the outside of the guide post (704).

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