Filtering device for food inspection and detection

Abstract

The utility model relates to the technical field of filtering devices, in particular to a filtering device for food inspection and detection, which comprises a protective box, a feeding hopper is fixedly mounted at the top of the protective box in a penetrating manner, operation openings are formed in two sides of the protective box, and symmetrically distributed guide rails are fixedly mounted on two sides in the protective box. Fixing plates are arranged on the two sides of the interior of the protection box. According to the filtering device for food inspection and detection, through cooperative use of the protection box, the feeding hopper, the taking and placing window, the operation opening, the limiting plate, a worm, a hand wheel, a worm gear, a guide pipe, a collection hopper, a fixing plate, bowl-shaped filtering nets, sliding blocks, a guide rail, a placing groove and an annular positioning frame, the two bowl-shaped filtering nets can be alternately used, and it is ensured that when the single bowl-shaped filtering net is cleaned, the cleaning efficiency is improved; the other bowl-shaped filter screen can still filter the sample, so that the continuous operation of the device is realized, and the use efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, specifically a filtration device for food inspection and testing. Background Technology

[0002] In today's society, food safety has become an increasingly important concern. Food often contains various solid impurities, suspended matter, oils, and other interfering substances. If these substances are not effectively treated, they can seriously affect the accuracy and lifespan of subsequent testing instruments, interfere with the interpretation of test results, and even lead to erroneous test conclusions, thereby adversely affecting food safety supervision and consumer health.

[0003] Chinese Patent No. CN221107184U discloses a food testing sample separation and filtration device. It uses an internal retaining ring to lock into the opening of the second funnel, which facilitates the installation of the filter screen and, conversely, facilitates the removal of the filter screen, thereby making it easy to clean the residue inside the filter screen.

[0004] Regarding the aforementioned technologies, this device has some shortcomings. In actual use, it only has a single filtration channel, which means that the entire device has to stop operating when cleaning residues in the filter screen, making continuous operation impossible and reducing the device's efficiency. Therefore, it is necessary to provide a filtration device for food inspection and testing to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a filtration device for food inspection and testing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A filtration device for food inspection and testing, comprising:

[0008] A protective box, wherein a feeding funnel is fixedly installed on the top of the protective box, and operating ports are opened on both sides of the protective box. Symmetrically distributed guide rails are fixedly installed on both sides of the interior of the protective box, and fixed plates are provided on both sides of the interior of the protective box. Sliders are fixedly installed on the front and back of the fixed plates, and the sliders are slidably connected to the guide rails.

[0009] Limiting plates are fixedly installed on opposite sides of the two fixed plates, and the limiting plates are adapted to the operating port. The fixed plates are provided with placement grooves, and the fixed plates are connected to the annular positioning frame through the placement grooves. A bowl-shaped filter screen is fixedly installed at the bottom of the annular positioning frame.

[0010] The bottom end of the feed funnel is rotatably equipped with a guide tube, and a collecting funnel is fixedly installed inside the protective box below the bowl-shaped filter screen. A loading and unloading window is opened at the bottom of the front of the protective box, and an adjustment mechanism is provided at the top inside the protective box.

[0011] Preferably, the limiting plate has an internal cavity, a fixing groove is formed at the top of the limiting plate, a positioning block is slidably inserted into the fixing groove, a spring is fixedly connected between the bottom of the positioning block and the bottom of the inner wall of the fixing groove, a rotating shaft is rotatably installed inside the internal cavity, one end of the rotating shaft passes through the limiting plate and extends to the outer surface of the limiting plate, a knob is fixedly installed at one end of the rotating shaft, a pull rope is fixedly connected to the outer wall of the rotating shaft, and one end of the pull rope passes through the protective box and extends into the inside of the fixing groove and is fixedly connected to the bottom of the positioning block, a positioning groove is formed at the top of the inner wall of the operating port, and the positioning groove is engaged with the positioning block.

[0012] Preferably, handles are rotatably installed on both sides of the top of the protective box.

[0013] Preferably, the adjusting mechanism includes a worm gear, which is rotatably installed inside the protective box behind the guide tube. A worm wheel is fixedly installed on the outer wall of the upper end of the guide tube, and the worm wheel meshes with the worm gear. One end of the worm gear passes through the protective box and extends to the outside of the protective box. A handwheel is fixedly installed on one end of the worm gear.

[0014] Preferably, the inner wall of the placement groove is stepped, and the placement groove is adapted to the annular positioning frame.

[0015] Preferably, a transparent glass panel is fixedly installed on the front of the protective box.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model utilizes a protective box, feeding funnel, loading / unloading window, operating port, limiting plate, worm gear, handwheel, worm wheel, guide tube, collecting funnel, fixing plate, bowl-shaped filter screen, slider, guide rail, placement slot, and annular positioning frame. Two bowl-shaped filters can be used alternately, ensuring that while cleaning one filter screen, the other can still filter the sample, enabling continuous operation and improving the device's efficiency. Furthermore, all testing equipment is installed inside the protective box with handles for easy carrying and ensures safety during daily storage, reducing the risk of external impacts.

[0018] 2. This utility model utilizes the combined use of a knob, rotating shaft, positioning groove, fixing groove, pull rope, inner cavity, spring, and positioning block. Through the interlocking action of the positioning block and positioning groove, it effectively ensures that the limiting plate is securely closed on the operating port, thereby improving the stability of the bowl-shaped filter screen when used inside the protective box. Furthermore, the operation structure of the positioning block is simple, facilitating quick operation by staff. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a frontal sectional view of the present invention.

[0021] Figure 3 This is a side view of the fixing plate in this utility model.

[0022] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Protective box; 2. Feed hopper; 3. Handle; 4. Pick-up / drop-off window; 5. Operating port; 6. Limiting plate; 7. Knob; 8. Worm gear; 9. Handwheel; 10. Worm wheel; 11. Guide tube; 12. Collection hopper; 13. Fixing plate; 14. Bowl-shaped filter screen; 15. Sliding block; 16. Guide rail; 17. Rotating shaft; 18. Placement slot; 19. Annular positioning frame; 20. Positioning slot; 21. Fixing slot; 22. Pull rope; 23. Inner cavity; 24. Spring; 25. Positioning block. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] 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.

[0028] Please see Figures 1-4 One embodiment provided by this utility model:

[0029] A filtration device for food inspection and testing, comprising:

[0030] The protective box 1 has a feed hopper 2 fixedly installed on the top of the protective box 1. Both sides of the protective box 1 have operation ports 5. Both sides of the interior of the protective box 1 have symmetrically distributed guide rails 16 fixedly installed. Both sides of the interior of the protective box 1 have fixed plates 13. Both the front and back of the fixed plates 13 have sliders 15 fixedly installed, and the sliders 15 are slidably connected to the guide rails 16.

[0031] Limiting plates 6 are fixedly installed on opposite sides of the two fixed plates 13, and the limiting plates 6 are adapted to the operating port 5. A placement groove 18 is provided on the fixed plate 13, and an annular positioning frame 19 is snapped into the fixed plate 13 through the placement groove 18. A bowl-shaped filter screen 14 is fixedly installed at the bottom of the annular positioning frame 19.

[0032] A guide tube 11 is rotatably installed at the bottom of the feed hopper 2. A collecting hopper 12 is fixedly installed inside the protective box 1 below the bowl-shaped filter screen 14. A pick-up and drop-off window 4 is opened at the bottom of the front of the protective box 1. An adjustment mechanism is provided at the top inside the protective box 1.

[0033] The limiting plate 6 has an inner cavity 23. The top of the limiting plate 6 has a fixing groove 21. A positioning block 25 is slidably inserted into the fixing groove 21. A spring 24 is fixedly connected between the bottom of the positioning block 25 and the bottom of the inner wall of the fixing groove 21. A rotating shaft 17 is rotatably installed inside the inner cavity 23. One end of the rotating shaft 17 passes through the limiting plate 6 and extends to the outer surface of the limiting plate 6. A knob 7 is fixedly installed at one end of the rotating shaft 17. A pull rope 22 is fixedly connected to the outer wall of the rotating shaft 17. One end of the pull rope 22 passes through the protective box 1 and extends into the inside of the fixing groove 21 and is fixedly connected to the bottom of the positioning block 25. A positioning groove 20 is opened at the top of the inner wall of the operating port 5. The positioning groove 20 is engaged with the positioning block 25.

[0034] In one embodiment, handles 3 are rotatably installed on both sides of the top of the protective box 1, which makes it convenient for staff to adjust the position of the handles 3 to move the protective box 1 according to their needs in different scenarios, thereby improving the convenience and comfort of moving.

[0035] In one preferred embodiment, the adjustment mechanism includes a worm gear 8, which is rotatably mounted inside the protective box 1 behind the conduit 11. A worm wheel 10 is fixedly mounted on the outer wall of the upper end of the conduit 11, and the worm wheel 10 meshes with the worm gear 8. One end of the worm gear 8 passes through the protective box 1 and extends to the outside of the protective box 1. A handwheel 9 is fixedly mounted on one end of the worm gear 8 to facilitate adjustment and locking of the position of the conduit 11.

[0036] In one embodiment, the inner wall of the placement groove 18 is stepped, and the placement groove 18 is adapted to the annular positioning frame 19, which facilitates accurate positioning and stable installation of the annular positioning frame 19.

[0037] In one preferred embodiment, a transparent glass panel is fixedly installed on the front of the protective box 1, allowing staff to observe the operating status of the equipment inside the protective box 1 and the sample filtration process at any time.

[0038] The working principle of this utility model is as follows: All parts not described herein are the same as or can be implemented using existing technology. In use, the collection container is placed inside the protective box 1 through the pick-and-place window 4, positioned below the collecting funnel 12. Then, the food inspection sample is poured into the feeding funnel 2. Guided by the feeding funnel 2, the sample flows into the conduit 11, and then into the corresponding bowl-shaped filter screen 14. The sample is filtered by the bowl-shaped filter screen 14, and the filtered sample flows into the collecting funnel 12, where it is guided into the pre-prepared collection container. As filter residue accumulates in the bowl-shaped filter screen 14, its flow performance gradually decreases. At this point, the operator manually rotates the handwheel 9. The rotation of the handwheel 9 drives the worm gear 8 to rotate. Through the meshing transmission between the worm gear 8 and the worm wheel 10, the worm wheel 10 drives the conduit 11 to rotate. The rotation of the conduit 11 adjusts its bottom position, causing it to rotate above another bowl-shaped filter screen 14. The sample then enters this bowl-shaped filter screen 14 for further filtration. For a clogged bowl-shaped filter 14, the operator can pull the corresponding limiting plate 6 outward using knob 7. The movement of the limiting plate 6 moves the fixing plate 13, which in turn moves the slider 15 along the guide rail 16. The cooperation between the slider 15 and the guide rail 16 ensures the stability of the fixing plate 13 as it moves outward from inside the protective box 1. The outward movement of the fixing plate 13 moves the bowl-shaped filter 14 along with the annular positioning frame 19, ultimately removing the clogged bowl-shaped filter 14 from inside the protective box 1. Afterward, the operator can directly remove the annular positioning frame 19 and the bowl-shaped filter 14 from the fixing plate 13 for cleaning. Once cleaning is complete, they are returned to their original positions inside the protective box 1. In this way, the two bowl-shaped filters 14 can be used alternately, ensuring that while cleaning one bowl-shaped filter 14, the other can still filter the sample, enabling continuous operation of the device and improving its efficiency. In addition, the testing equipment of the device is installed inside the protective case 1, with handle 3 for easy carrying and to ensure safety during daily storage, reducing the risk of external impact.

[0039] When using the cup-shaped filter 14, to remove it from the protective box 1 for cleaning, the knob 7 must first be operated. Turning the knob 7 rotates the shaft 17, which in turn winds the pull rope 22, pulling the positioning block 25 downwards and simultaneously compressing the spring 24. As the positioning block 25 moves downwards, it disengages from the positioning groove 20. Once the limiting plate 6 is no longer constrained by the positioning block 25 and the positioning groove 20, the operator can easily pull the limiting plate 6, moving the fixing plate 13 and its related components outwards. The engagement between the positioning block 25 and the positioning groove 20 effectively ensures that the limiting plate 6 is securely closed on the operating opening 5, thereby improving the stability of the cup-shaped filter 14 when used inside the protective box 1. Furthermore, the simple operating structure of the positioning block 25 allows operators to quickly perform related operations.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A filtration device for food inspection and testing, characterized in that, It includes: A protective box (1) is provided with a feeding funnel (2) fixedly inserted on the top of the protective box (1). Both sides of the protective box (1) are provided with operation ports (5). Both sides of the interior of the protective box (1) are fixedly installed with symmetrically distributed guide rails (16). Both sides of the interior of the protective box (1) are provided with fixing plates (13). Both the front and back sides of the fixing plates (13) are fixedly installed with sliders (15), and the sliders (15) are slidably connected to the guide rails (16). Limiting plates (6) are fixedly installed on opposite sides of the two fixed plates (13), and the limiting plates (6) are adapted to the operating port (5). A placement groove (18) is provided on the fixed plate (13), and an annular positioning frame (19) is snapped into the fixed plate (13) through the placement groove (18). A bowl-shaped filter screen (14) is fixedly installed at the bottom of the annular positioning frame (19). The bottom end of the feed hopper (2) is rotatably equipped with a guide tube (11), and the inside of the protective box (1) is fixedly installed below the bowl-shaped filter screen (14). The protective box (1) has a pick-up and put-out window (4) on the lower front side, and an adjustment mechanism is provided on the upper inside of the protective box (1).

2. The filtration device for food inspection and testing according to claim 1, characterized in that: The limiting plate (6) has an inner cavity (23) inside. The top of the limiting plate (6) has a fixing groove (21). A positioning block (25) is slidably inserted into the fixing groove (21). A spring (24) is fixedly connected between the bottom of the positioning block (25) and the bottom of the inner wall of the fixing groove (21). A rotating shaft (17) is rotatably installed inside the inner cavity (23). One end of the rotating shaft (17) passes through the limiting plate (6) and extends to the outer side of the limiting plate (6). A knob (7) is fixedly installed at one end of the rotating shaft (17). A pull rope (22) is fixedly connected to the outer wall of the rotating shaft (17). One end of the pull rope (22) passes through the protective box (1) and extends to the inside of the fixing groove (21) and is fixedly connected to the bottom of the positioning block (25). A positioning groove (20) is opened at the top of the inner wall of the operating port (5). The positioning groove (20) is engaged with the positioning block (25).

3. The filtration device for food inspection and testing according to claim 1, characterized in that: The protective box (1) has handles (3) mounted on both sides of its top.

4. A filtration device for food inspection and testing according to claim 1, characterized in that: The adjustment mechanism includes a worm gear (8), which is rotatably installed inside the protective box (1) behind the guide tube (11). A worm wheel (10) is fixedly installed on the outer wall of the upper end of the guide tube (11), and the worm wheel (10) meshes with the worm gear (8). One end of the worm gear (8) passes through the protective box (1) and extends to the outside of the protective box (1). A handwheel (9) is fixedly installed on one end of the worm gear (8).

5. A filtration device for food inspection and testing according to claim 1, characterized in that: The inner wall of the placement groove (18) is stepped, and the placement groove (18) is adapted to the annular positioning frame (19).

6. A filtration device for food inspection and testing according to claim 1, characterized in that: The protective box (1) has a transparent glass panel fixedly installed on its front.

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