A food grade filter press

Abstract

The utility model discloses a food -grade filter press, including filter press cartridge, the inside of filter press cartridge upper end is provided with extrusion subassembly, the inside of filter press cartridge lower extreme is provided with filter component, the lower side of filter press cartridge front end is equipped with taking and putting window, the inside of taking and putting window is provided with the pressing cup of the opening to the upper, and the pressing cup is located filter press cartridge inside, and is located extrusion subassembly downside, the upper end opening department of pressing cup is through camber surface processing, and the rear end inside of pressing cup is equipped with the limit card slot, the inside of pressing cup lower extreme is provided with primary filter screen, the lower extreme screw thread connection of filter press cartridge has the connecting threaded seat, the utility model discloses the integration design of pressing and double filtration, through extrusion subassembly to food carries out efficient pressing, makes the first pressing liquid to pass primary filter screen rough filtration again, passes through secondary filter screen and carries out fine filtration, ensures liquid purity, avoids the cumbersome operation of traditional filter press equipment needing to shift material for many times, improves processing efficiency, reduces the pollution risk simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of food processing, and in particular to a food-grade filter press. Background Technology

[0002] Currently, the demand for filter press equipment in the food processing industry is growing, especially in the production of liquid foods such as fruit juice, edible oil, and plant extracts, where efficient, hygienic, and easy-to-operate filter press technology is particularly important.

[0003] Traditional filter press equipment typically uses a single pressing or filtration method, which has problems such as low liquid extraction rate, unsatisfactory filtration effect, and cumbersome operation. Moreover, most equipment requires manual transfer of materials multiple times, which is not only inefficient but also prone to secondary pollution.

[0004] To address the aforementioned issues, a food-grade filter press that is easy to operate and can achieve efficient pressing and dual filtration is proposed to improve production efficiency, ensure food safety, and meet the automation and hygiene requirements of modern food processing. Utility Model Content

[0005] The main purpose of this invention is to propose a food-grade filter press, which aims to solve the problems of low liquid extraction rate, unsatisfactory filtration effect, and cumbersome operation of traditional filter press equipment that uses a single pressing or filtration method.

[0006] To address the aforementioned problems, this utility model proposes a food-grade filter press, comprising a filter cylinder, an extrusion assembly inside the upper end of the filter cylinder, a filtration assembly inside the lower end of the filter cylinder, a loading / unloading window on the lower front side of the filter cylinder, a pressing cup with its opening facing upward inside the loading / unloading window, the pressing cup being located inside the filter cylinder and below the extrusion assembly, the upper opening of the pressing cup being arc-shaped, and a limiting groove being formed inside the rear end of the pressing cup, a primary filter screen being installed inside the lower end of the pressing cup, a connecting threaded seat being threaded to the lower end of the filter cylinder, a collection bucket being connected to the lower end of the connecting threaded seat, a discharge pipe being connected to the rear end of the collection bucket, and a sealing cap being threaded to the rear end of the discharge pipe.

[0007] Preferably, the extrusion assembly includes a limiting slider, a pressing head, a passive pressing rod, and an active pressing rod. A limiting groove is formed on the inner wall of the cylindrical filter cylinder. A limiting ring is fixedly connected to the inner wall of the limiting groove, and a notch is provided at the rear end of the limiting ring. A limiting slider is slidably connected inside the upper end of the limiting groove, and a pressing head is connected to the center of the lower end of the limiting slider.

[0008] Preferably, the lower edge of the pressing head is arc-shaped and can be inserted into the pressing cup. A passive pressing rod is connected to the center of the upper end of the limiting slider. A squeezing roller is rotatably connected to the upper end of the passive pressing rod. An active pressing rod is provided at the upper end of the squeezing roller, and the active pressing rod is rotatably connected to the rear side of the upper end of the filter cylinder through a rotating seat.

[0009] Preferably, the limiting slider is connected to connecting frames at both ends, and the two connecting frames are slidably connected inside the two return sleeves respectively. The lower ends of the two connecting frames are connected to return slide rods on the side away from the limiting slider, and the two return slide rods are slidably connected inside the two return springs respectively. The lower ends of the two return slide rods are each provided with a return spring.

[0010] Preferably, the filter assembly includes a suction piston and a filter cup. A linkage rod is connected to the rear side of the lower end of the limiting slider. The linkage rod is located behind the pressing head, and the pressing cup is engaged with the linkage rod through a limiting slot. The lower end of the linkage rod is connected to the suction piston, which is slidably connected inside the limiting groove, and a rubber sealing ring is provided between the piston and the limiting groove.

[0011] Preferably, the upper end face of the suction piston is a concave arc surface, and a liquid guide hole runs through the center of the suction piston from top to bottom. A filter cup is provided on the lower side of the suction piston. The filter cup is clamped between the filter cylinder and the collection bucket and is located inside the connecting thread seat. A secondary filter screen is provided inside the lower end of the filter cup.

[0012] Preferably, a convex-shaped compression plug is slidably connected to the upper end of the liquid guiding hole, and multiple connecting guide holes are opened on the outer side of the lower end of the compression plug. A rubber sealing ring is provided between the compression plug and the liquid guiding hole, and a compression plugging spring is provided at the lower end of the compression plug.

[0013] Preferably, the upper rear side of the collection bucket is provided with an air guide hole, which communicates with the outside. A liquid suction plug is slidably connected to the lower end of the air guide hole. Multiple connecting guide holes are provided on the outer side of the upper end of the liquid suction plug. A rubber sealing ring is provided between the liquid suction plug and the air guide hole. A liquid suction plug spring is provided at the upper end of the liquid suction plug. A baffle is provided inside the upper end of the air guide hole.

[0014] Beneficial effects:

[0015] 1. This utility model adopts an integrated design of pressing and dual filtration. The food is pressed efficiently through the extrusion component, so that the virgin liquid is first coarsely filtered through a primary filter screen and then finely filtered through a secondary filter screen to ensure the purity of the liquid. This avoids the cumbersome operation of transferring materials multiple times required by traditional filter press equipment, improves processing efficiency, and reduces the risk of contamination.

[0016] 2. This utility model adopts a lever-driven extrusion assembly. By pressing the active pressure rod, the pressing head is driven to press down, thereby achieving efficient pressing of food. At the same time, the return spring and slide bar structure are used to achieve automatic reset, so that the pressing head can quickly return to its original position, which is convenient for continuous operation and improves pressing efficiency.

[0017] 3. This utility model transmits the up-and-down movement of the pressing head to the suction piston through the linkage rod, so that the suction piston generates negative pressure when it rises, drawing the initial pressing liquid into the secondary filtration zone, and pushing the liquid through the secondary filter screen when it is pressed down, thus achieving secondary fine filtration. No additional power device is required, and the pressing and filtration processes can be completed continuously by relying solely on mechanical linkage, which is energy-saving and efficient.

[0018] 4. This utility model sets up an air pressure regulating structure between the collection tank and the filtration system. It uses the spring control of the squeeze sealing head and the liquid suction sealing head to ensure sealing when the liquid is suctioned under negative pressure and to automatically vent air when the liquid is pressure filtered, so as to prevent liquid backflow or contamination, ensure the stability of the filtration process, avoid the entry of external impurities, and at the same time ensure the high efficiency and reliability of the equipment when it is working continuously.

[0019] 5. The pressing cup of this utility model adopts a front-end loading and unloading window design, and is equipped with a limiting slot and a handle, so that it can be quickly loaded and unloaded. At the same time, the filter cup can be removed by separating the filter cylinder and connecting the threaded seat, which is convenient for cleaning residue and replacing new materials. The arc-shaped opening of the pressing cup is precisely matched with the pressing head to ensure a stable and efficient pressing process and improve the convenience of operation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the filter press of this utility model;

[0022] Figure 2 This is a three-dimensional cross-sectional view of the filter press of this utility model;

[0023] Figure 3 This is a schematic diagram of the filter cup connection structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the connection structure of the extrusion assembly of this utility model;

[0025] Figure 5 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0026] Figure 6 For the present utility model Figure 3 Enlarged diagram of point B in the middle.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1. Filter press cylinder; 2. Loading / unloading window; 3. Pressing cup; 4. Connecting threaded seat; 5. Collection bucket; 6. Discharge pipe; 7. Limiting slide groove; 8. Limiting ring; 9. Limiting slider; 10. Pressing head; 11. Passive pressure rod; 12. Extrusion roller; 13. Active pressure rod; 14. Return sleeve; 15. Connecting frame; 16. Return slide rod; 17. Return spring; 18. Linkage rod; 19. Suction piston; 20. Liquid guide hole; 21. Filter cup; 22. Extrusion sealing head; 23. Extrusion sealing spring; 24. Air guide hole; 25. Liquid suction sealing head; 26. Liquid suction sealing spring; 27. Baffle screen. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] To achieve the above-mentioned utility model objectives, such as Figures 1-6 As shown, this utility model provides a food-grade filter press, including a filter cylinder 1. A pressing assembly is installed inside the upper end of the filter cylinder 1, and a filtering assembly is installed inside the lower end of the filter cylinder 1. A loading / unloading window 2 is provided on the lower side of the front end of the filter cylinder 1, and a pressing cup 3 with its opening facing upwards is installed inside the loading / unloading window 2. The pressing cup 3 is located inside the filter cylinder 1 and below the pressing assembly. The upper opening of the pressing cup 3 is arc-shaped, and a limiting groove is provided inside the rear end of the pressing cup 3. A primary filter screen is installed inside the lower end of the pressing cup 3. A connecting threaded seat 4 is threaded to the lower end of the filter cylinder 1, and a collection bucket 5 is connected to the lower end of the connecting threaded seat 4. The rear end of the collection bucket 5 is connected to... The system has a discharge pipe 6 with a sealing cap threaded to its rear end. During the food pressing and filtration process, the food to be pressed is placed inside the pressing cup 3, and the pressing cup 3 is placed inside the filter cylinder 1 through the loading and unloading window 2. The food inside the pressing cup 3 can be pressed by the squeezing component set inside the upper end of the filter cylinder 1, and the pressed liquid can be filtered through the primary filter screen inside the lower end of the pressing cup 3 and flow into the filter component inside the lower end of the filter cylinder 1 for secondary filtration. The liquid after secondary filtration flows into the collection bucket 5 for collection. Finally, the sealing cap is unscrewed and the liquid is discharged through the discharge pipe 6 for the next step of processing.

[0031] like Figure 2 and Figure 4 As shown, the extrusion assembly includes a limiting slider 9, a pressing head 10, a passive pressing rod 11, and an active pressing rod 13. A limiting groove 7 is formed on the inner cylindrical wall of the filter cylinder 1. A limiting ring 8 is fixedly connected to the inner cylindrical wall of the limiting groove 7, and a notch is provided at the rear end of the limiting ring 8. The limiting slider 9 is slidably connected to the upper end of the limiting groove 7. The pressing head 10 is connected to the center of the lower end of the limiting slider 9. The lower edge of the pressing head 10 is arc-shaped and can be inserted into the pressing cup 3. The passive pressing rod 11 is connected to the center of the upper end of the limiting slider 9. A pressing roller 12 is rotatably connected to the upper end of the passive pressing rod 11. An active pressing rod 13 is provided on the upper end of the pressing roller 12, and the active pressing rod 13 is rotatably connected to the rear side of the upper end of the filter cylinder 1 via a rotary seat. This assembly is used for the extrusion of food... During the pressing process, the front end of the active pressure rod 13 is pressed down. The active pressure rod 13 rotates and squeezes the pressing roller 12 downwards. The pressing roller 12 then squeezes the limiting slider 9 and the pressing head 10 downwards. The pressing roller 12 can adjust its position relative to the active pressure rod 13 by rolling at the lower end of the active pressure rod 13. This allows the lower end of the pressing head 10 to be inserted into the pressing cup 3 under the pressure of the pressing roller 12 and the active pressure rod 13, and to press the food inside the pressing cup 3, thereby obtaining the initial liquid. The initial liquid can be filtered once through the primary filter screen and flows into the lower end of the filter cylinder 1. The residue after pressing is blocked inside the pressing cup 3 by the primary filter screen. The residue can be cleaned by removing the pressing cup 3, and new food can be put in for further pressing.

[0032] like Figure 2 As shown, the limiting slider 9 is connected to connecting brackets 15 at both ends, and the two connecting brackets 15 are slidably connected to the inside of the two return sleeves 14. The lower end of the two connecting brackets 15, away from the limiting slider 9, is connected to a return slide rod 16, and the two return slide rods 16 are slidably connected to the inside of the two return springs 17. The lower end of the two return slide rods 16 is provided with a return spring 17. After the pressing is completed, the active pressure rod 13 is released. At this time, the connecting brackets 15 and the return slide rods 16 slide up and down inside the return sleeve 14 under the action of the return springs 17, and drive the limiting slider 9 and the pressing head 10 to slide upward back to their original positions inside the limiting slide groove 7. At the same time, the pressing roller 12 and the active pressure rod 13 are driven back to their original positions, allowing the pressing head 10 to be pulled out from the inside of the pressing cup 3, so that the pressing cup 3 can be smoothly removed from the inside of the filter cylinder 1 for cleaning of residue and putting in new food, so that the filter press can continue to press.

[0033] like Figure 2 , Figure 3 and Figure 5As shown, the filtration assembly includes a suction piston 19 and a filter cup 21. A linkage rod 18 is connected to the rear side of the lower end of the limiting slider 9. The linkage rod 18 is located behind the pressing head 10, and the pressing cup 3 is engaged with the linkage rod 18 through a limiting slot. The lower end of the linkage rod 18 is connected to the suction piston 19, which is slidably connected inside the limiting groove 7. A rubber sealing ring is provided between the suction piston 19 and the limiting groove 7. The upper end face of the suction piston 19 is a concave arc surface. A liquid guiding hole 20 runs vertically through the center of the suction piston 19. The filter cup 21 is located below the suction piston 19. The filter cup 21 is clamped between the filter cylinder 1 and the collection bucket 5 and is located inside the connecting thread seat 4. A secondary filter screen is provided inside the lower end of the filter cup 21. During continuous pressing, the initial pressing liquid flowing into the lower end of the filter cylinder 1 can pass through the suction piston 19. The concave upper surface is used for collection. Since the suction piston 19 is connected to the limiting slider 9 through the linkage rod 18, the suction piston 19 can slide up and down together with the limiting slider 9. When the limiting slider 9 and the pressing head 10 slide upward back to their original positions, the suction piston 19 slides upward together under the action of the limiting slider 9, and a negative pressure is generated at the lower end of the suction piston 19. Through the negative pressure at the lower end of the suction piston 19 and the liquid guide hole 20, the initial pressed liquid is drawn into the space between the suction piston 19 and the filter cup 21. When the limiting slider 9 and the pressing head 10 perform the next pressing, the suction piston 19 slides downward under the action of the limiting slider 9, and squeezes the initial pressed liquid drawn into the space between the suction piston 19 and the filter cup 21 downward, so that the initial pressed liquid can be filtered again through the secondary filter screen inside the lower end of the filter cup 21 and flow into the collection bucket 5 for collection.

[0034] During the process of placing the pressing cup 3 into the filter cylinder 1 through the loading and unloading window 2, the pressing cup 3 can be limited by the limiting slot at the rear end and the linkage rod 18, thereby positioning the pressing cup 3 and the pressing head 10, ensuring that the pressing head 10 is just above the pressing cup 3, so that the pressing head 10 can be smoothly inserted into the pressing cup 3 to press the food. In addition, the pressing cup 3 is provided with a loading and unloading handle at the front end, making it more convenient to pick up and put down the pressing cup 3. Furthermore, the filter cup 21 can be taken out for cleaning and replacement by unscrewing the connecting threaded seat 4 and the collection bucket 5.

[0035] like Figure 5 and Figure 6As shown, a convex-shaped compression sealing head 22 is slidably connected to the upper end of the liquid guiding hole 20. Multiple connecting guide holes are opened on the outer side of the lower end of the compression sealing head 22, and a rubber sealing ring is provided between the compression sealing head 22 and the liquid guiding hole 20. A compression sealing spring 23 is provided at the lower end of the compression sealing head 22. A vent hole 24 is opened on the rear side of the upper end of the collection bucket 5, and it communicates with the outside through the vent hole 24. A liquid suction sealing head 25 is slidably connected to the lower end of the vent hole 24. Multiple connecting guide holes are opened on the outer side of the upper end of the liquid suction sealing head 25, and a rubber sealing ring is provided between the liquid suction sealing head 25 and the vent hole 24. A liquid suction sealing spring 26 is provided at the upper end of the liquid suction sealing head 25. A baffle 27 is provided inside the upper end of the vent hole 24. During the upward sliding of the suction piston 19... During the process, the space at the lower end of the suction piston 19 gradually increases, resulting in a gradually increasing negative pressure at the lower end of the suction piston 19, which causes the inside of the collection tank 5 to be in a negative pressure state. At this time, the liquid suction plug 25 is sealed inside the lower end of the air guide hole 24 under the pressure of the negative pressure and the pushing of the liquid suction plug spring 26, and the rear end of the discharge pipe 6 is sealed by the plug cap, so that the collection tank 5 is in a sealed state. When the negative pressure increases to the point that it can overcome the elastic force of the compression plug spring 23, the compression plug 22 slides down from the upper end of the liquid guide hole 20 and connects the upper and lower ends of the liquid guide hole 20 through multiple connecting guide holes, so that the collection tank 5 can be connected to the upper end of the suction piston 19 through the liquid guide hole 20, and the initial squeezed liquid at the upper end of the suction piston 19 is sucked into the space between the suction piston 19 and the filter cup 21 by the negative pressure.

[0036] Conversely, as the suction piston 19 slides downward, it squeezes the initial liquid downward, gradually increasing the air pressure inside the collection tank 5. Under the pressure of the air pressure, the initial liquid, and the squeezing sealing head 22, it seals the upper end of the liquid guide hole 20 again. When the negative pressure inside the collection tank 5 increases to the point that it can overcome the elasticity of the suction sealing spring 26, the suction sealing head 25 slides out from the lower end of the air guide hole 24 and connects the upper and lower ends of the air guide hole 24 through multiple connecting guide holes, allowing the gas inside the collection tank 5 to be discharged through the air guide hole 24. This allows the suction piston 19 to be pressed down smoothly, and the initial liquid between the suction piston 19 and the filter cup 21 to be filtered through the secondary filter screen. The upper end of the air guide hole 24 is protected by a baffle 27 to prevent impurities from entering and contaminating the inside of the collection tank 5.

[0037] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A food-grade filter press, characterized in that, The filter press includes a filter cylinder (1), an extrusion assembly is provided inside the upper end of the filter cylinder (1), a filtration assembly is provided inside the lower end of the filter cylinder (1), a pick-up and drop-off window (2) is provided on the lower side of the front end of the filter cylinder (1), a pressing cup (3) with an upward opening is provided inside the pick-up and drop-off window (2), the pressing cup (3) is located inside the filter cylinder (1) and below the extrusion assembly, the upper opening of the pressing cup (3) is arc-shaped, and a limit slot is provided inside the rear end of the pressing cup (3), a primary filter screen is provided inside the lower end of the pressing cup (3), a connecting threaded seat (4) is threaded to the lower end of the filter cylinder (1), a collection bucket (5) is connected to the lower end of the connecting threaded seat (4), a discharge pipe (6) is connected to the rear end of the collection bucket (5), and a sealing cap is threaded to the rear end of the discharge pipe (6).

2. The food-grade filter press as described in claim 1, characterized in that, The extrusion assembly includes a limiting slider (9), a pressing head (10), a passive pressing rod (11), and an active pressing rod (13). A limiting groove (7) is provided on the inner cylindrical wall of the filter cylinder (1). A limiting ring (8) is fixedly connected to the inner cylindrical wall of the limiting groove (7), and a notch is provided at the rear end of the limiting ring (8). The limiting slider (9) is slidably connected inside the upper end of the limiting groove (7), and the pressing head (10) is connected to the center of the lower end of the limiting slider (9).

3. A food-grade filter press as described in claim 2, characterized in that, The lower edge of the pressing head (10) is arc-shaped and can be inserted into the pressing cup (3). A passive pressing rod (11) is connected to the center of the upper end of the limiting slider (9). A squeezing roller (12) is rotatably connected to the upper end of the passive pressing rod (11). An active pressing rod (13) is provided on the upper end of the squeezing roller (12), and the active pressing rod (13) is rotatably connected to the rear side of the upper end of the filter cylinder (1) through a swivel.

4. A food-grade filter press as described in claim 3, characterized in that, The limiting slider (9) is connected to connecting brackets (15) at both ends, and the two connecting brackets (15) are slidably connected inside the two return sleeves (14). The lower ends of the two connecting brackets (15) are connected to return slide rods (16) on the side away from the limiting slider (9), and the two return slide rods (16) are slidably connected inside the two return springs (17). The lower ends of the two return slide rods (16) are each provided with a return spring (17).

5. A food-grade filter press as described in claim 4, characterized in that, The filter assembly includes a suction piston (19) and a filter cup (21). The lower end of the limiting slider (9) is connected to a linkage rod (18). The linkage rod (18) is located behind the pressing head (10), and the pressing cup (3) is engaged with the linkage rod (18) through a limiting slot. The lower end of the linkage rod (18) is connected to the suction piston (19), and the suction piston (19) is slidably connected inside the limiting groove (7), and a rubber sealing ring is provided between the piston and the limiting groove (7).

6. A food-grade filter press as described in claim 5, characterized in that, The upper end face of the suction piston (19) is a concave arc surface. A liquid guide hole (20) runs through the center of the suction piston (19). A filter cup (21) is provided on the lower side of the suction piston (19). The filter cup (21) is sandwiched between the filter cylinder (1) and the collection bucket (5) and is located inside the connecting thread seat (4). A secondary filter screen is provided inside the lower end of the filter cup (21).

7. A food-grade filter press as described in claim 6, characterized in that, The upper end of the liquid guiding hole (20) is slidably connected to a convex-shaped compression sealing head (22). Multiple connecting guide holes are opened on the outer side of the lower end of the compression sealing head (22). A rubber sealing ring is provided between the compression sealing head (22) and the liquid guiding hole (20). A compression sealing spring (23) is provided at the lower end of the compression sealing head (22).

8. A food-grade filter press as described in claim 1, characterized in that, The collection bucket (5) has an air guide hole (24) on the rear side of its upper end, and communicates with the outside through the air guide hole (24). The lower end of the air guide hole (24) is slidably connected to a liquid suction plug (25). The upper outer side of the liquid suction plug (25) has multiple connecting guide holes, and a rubber sealing ring is provided between the liquid suction plug (25) and the air guide hole (24). The upper end of the liquid suction plug (25) is provided with a liquid suction plug spring (26), and the upper end of the air guide hole (24) is provided with a baffle (27).

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