Impurity filter

Abstract

This utility model relates to the field of instruments for food safety testing, and more particularly to an impurity filter, including a filter housing. The top of the filter housing is bolted to an end cover with a feed hopper. A support block is fixedly connected to the inner wall of the filter housing. A filter plate is mounted on top of the support block, and a connecting frame is fixedly connected to the bottom of the filter plate. A retaining clip is rotatably connected to the inner wall of the connecting frame. The filter plate is engaged with the support block via the retaining clip. An unlocking mechanism is provided inside the support block to release the retaining clip. By incorporating the connecting frame, retaining clip, and unlocking mechanism, this utility model allows operators to easily remove the filter plate by simply pulling a linkage plate, which in turn moves the connecting rod and push rod to release the retaining clip when the filter needs to be replaced. This significantly reduces disassembly and replacement time and manpower, effectively shortens equipment downtime, and significantly improves production progress.

Description

Technical Field

[0001] This utility model relates to the field of instruments for food safety testing, and in particular to an impurity filter. Background Technology

[0002] Impurity level refers to the amount of impurities contained in milk and is an important indicator for measuring the quality of dairy products. Impurities mainly refer to foreign objects such as grass, sand, and dust introduced into the dairy products during production and transportation. This is because, on the one hand, the impurities in raw milk are mainly caused by certain human factors, such as hair falling into the milk bucket during milking and floating objects in the feed in the cowshed. These factors can be largely eliminated by strengthening management and standardizing operations. On the other hand, before being collected into storage tanks, raw milk undergoes an online filtration process to remove most of the particles, leaving only a small number of fine particles. Therefore, the impact of impurity level on the quality of raw milk is relatively small.

[0003] The existing impurity filter, disclosed in publication number CN217794870U, uses a filter screen to filter dairy products and remove impurities. However, this filter screen is fixed with bolts, requiring operators to loosen or tighten multiple bolts one by one using tools. This cumbersome process consumes a lot of time and manpower, significantly reducing the efficiency of filter screen disassembly and replacement, extending equipment downtime, and affecting production progress. Furthermore, it creates unsanitary areas, making it difficult for cleaning agents and tools to penetrate deeply during cleaning, resulting in impurities and dirt residue. This not only affects the filter screen's filtration performance but may also breed bacteria, posing a potential threat to product quality and production safety. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing impurity filters that use bolts to fix the filter screen. This method requires operators to use tools to loosen or tighten multiple bolts one by one, which is cumbersome, time-consuming, and labor-intensive. It greatly reduces the efficiency of filter screen disassembly and replacement, prolongs equipment downtime, and affects production progress. At the same time, it creates unsanitary areas, making it difficult for cleaning agents and tools to penetrate deeply during cleaning, resulting in impurities and dirt residue. This not only affects the filter screen's filtration performance but may also breed bacteria, posing a potential threat to product quality and production safety. Therefore, this invention proposes an impurity filter.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An impurity filter includes a filter housing. An end cap with a feed hopper is bolted to the top of the filter housing. A support block is fixedly connected to the inner wall of the filter housing. A filter plate is mounted on top of the support block. A connecting frame is fixedly connected to the bottom of the filter plate. A retaining clip is rotatably connected to the inner wall of the connecting frame. The filter plate is interlocked with the support block via the retaining clip. An unlocking mechanism for releasing the retaining clip is provided inside the support block. A collection trough for collecting waste material is fixedly connected to one side of the filter plate. A discharge pipe is connected through the bottom of the filter housing.

[0007] Preferably, the connecting frame is U-shaped, the fixing buckle is L-shaped, a spring is fixedly connected to the outer wall of the fixing buckle, and the end of the spring away from the fixing buckle is fixedly connected to the inner wall of the connecting frame.

[0008] Preferably, the unfastening mechanism includes a sliding hole at the bottom of the support block, a push rod slidably connected in the sliding hole, a second spring sleeved on the push rod, and a connecting rod fixedly connected to the outer wall of the push rod.

[0009] Preferably, one end of the second spring is fixedly connected to the inner wall of the sliding hole, and the other end of the second spring is fixedly connected to the outer wall of the push rod, so that after the push rod can be driven downward by the connecting rod, it returns to its original position under the elastic action of the second spring.

[0010] Preferably, the outer wall of the filter box is provided with a sliding opening that communicates with the sliding hole, the connecting rod passes through the sliding opening and is slidably connected, and a linkage plate is fixedly connected to the end of the connecting rod away from the push rod.

[0011] Preferably, the support block has a sliding groove on the side near the fixing buckle, and the fixing buckle slides in conjunction with the sliding groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In use, this invention eliminates the tedious traditional method of tightening and loosening bolts one by one by setting up a connecting frame, fixing buckles, and unfastening mechanism. When the filter screen needs to be replaced, the operator only needs to pull the linkage plate, which drives the connecting rod and the push rod to release the restriction on the fixing buckle, allowing the filter screen to be easily removed. This significantly reduces disassembly and replacement time and manpower, effectively shortens equipment downtime, and significantly improves production progress. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an impurity filter proposed in this utility model;

[0015] Figure 2 Cross-sectional view of an impurity filter proposed in this utility model Figure 1 ;

[0016] Figure 3 This utility model proposes a filter screen for an impurity filter.

[0017] Figure 4 Cross-sectional view of an impurity filter proposed in this utility model Figure 2 ;

[0018] Figure 5 This is an enlarged view of section A of the structure of the impurity filter proposed in this utility model.

[0019] In the diagram: 1. Filter box; 2. End cap; 3. Support block; 4. Filter plate; 5. Connecting frame; 6. Fixing buckle; 7. Unfastening mechanism; 8. Collection trough; 9. Discharge pipe; 10. Spring 1; 11. Sliding hole; 12. Push rod; 13. Spring 2; 14. Sliding port; 15. Connecting rod; 16. Linkage plate; 17. Waste discharge pipe; 18. Sliding groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Reference Figures 1-5 An impurity filter includes a filter housing 1. The top of the filter housing 1 is fixedly connected to an end cover 2 with a feed hopper by bolts. The bottom of the end cover 2 is fixedly connected to a guide plate that slopes towards the center, so that dairy products do not flow into the collection tank 8 and cause waste.

[0022] A support block 3 is fixedly connected to the inner wall of the filter box 1. The support block 3 is integrally formed with the inner wall of the filter box 1, and the connection is chamfered. A filter plate 4 is provided on the top of the support block 3. A connecting frame 5 is fixedly connected to the bottom of the filter plate 4. The connecting frame 5 is located at the bottom edge of the filter plate 4 and is blocked by the edge so that it does not directly contact the dairy products. A fixing buckle 6 is rotatably connected to the inner wall of the connecting frame 5. The filter plate 4 is interlocked with the support block 3 through the fixing buckle 6. The support block 3 is provided with a release mechanism 7 to release the fixing buckle 6. The release mechanism 7 includes a sliding hole 11 opened at the bottom of the support block 3. A push rod 12 is slidably connected in the sliding hole 11. The bottom of the push rod 12 is provided with an inclined side facing the fixing buckle 6. A spring 13 is sleeved on the push rod 12. A connecting rod 15 is fixedly connected to the outer wall of the push rod 12.

[0023] The release mechanism 7 is achieved by manually pulling the linkage plate 16 downwards. The linkage plate 16 pulls the push rod 12 downwards via the connecting rod 15. The push rod 12 pushes the fixing buckle 6 to move away from the support block 3. After the fixing buckle 6 leaves the support block 3, the restriction of the filter plate 4 can be released.

[0024] A collection tank 8 for collecting waste is fixedly connected to one side of the filter plate 4. The collection tank 8 is an existing technology in the field of this technology. By collecting the waste generated after filtration, the waste is prevented from accumulating in the filtration area, so it will not be described in detail. A waste discharge pipe 17 is opened at the bottom of the collection tank 8, and a discharge pipe 9 is connected through the bottom of the filter box 1.

[0025] The connecting frame 5 is U-shaped, providing space for the installation and rotation of the fixing buckle 6, and also enhancing the stability of the connection with the filter plate 4. The fixing buckle 6 is L-shaped, with a round head at the smaller end for easy fastening and release. A spring 10 is fixedly connected to the outer wall of the fixing buckle 6, and the end of the spring 10 away from the fixing buckle 6 is fixedly connected to the inner wall of the connecting frame 5.

[0026] The elasticity of spring 10 keeps the fixing buckle 6 in a vertical position, making the engagement between the fixing buckle 6 and the support block 3 more secure.

[0027] One end of the second spring 13 is fixedly connected to the inner wall of the sliding hole 11, and the other end of the second spring 13 is fixedly connected to the outer wall of the push rod 12, so that the push rod 12 can be driven downward by the connecting rod 15 and then return to its original position under the elastic action of the second spring 13.

[0028] The function of spring 13 is that when the linkage plate 16 is pulled and the push rod 12 moves downward to release the restriction on the fixed buckle 6, spring 13 is compressed. After the operation is completed, the elastic restoring force of spring 13 causes the push rod 12 to automatically reset, preparing for the next unlocking operation and ensuring the continuity and convenience of the buckle unlocking mechanism 7 operation.

[0029] The outer wall of the filter box 1 is provided with a sliding opening 14 that communicates with the sliding hole 11. The connecting rod 15 passes through the sliding opening 14 and is slidably connected. The end of the connecting rod 15 away from the push rod 12 is fixedly connected to the linkage plate 16.

[0030] By pulling the linkage plate 16, the operator's pulling force can be transmitted to the connecting rod 15 and the push rod 12, thereby unlocking the fixing buckle 6. Its position and structural design conform to ergonomic principles, reducing the difficulty of operation and labor intensity.

[0031] The support block 3 has a sliding groove 18 on the side near the fixing buckle 6. The fixing buckle 6 slides in the sliding groove 18, providing precise guidance and positioning for the sliding and locking of the fixing buckle 6, so that the fixing buckle 6 can be smoothly inserted and removed, improving the efficiency of filter installation and removal.

[0032] Working principle:

[0033] When using this impurity filter, first pour the dairy products into the filter box 1 through the feed hopper of the end cap 2. The guide plate directs the dairy products to the center of the filter plate 4 to prevent them from flowing into the collection tank 8 and causing waste. After the dairy products are filtered by the filter plate 4, the pure liquid is discharged through the discharge pipe 9, while the impurities are intercepted and slide into the collection tank 8, and finally are centrally processed through the waste discharge pipe 17.

[0034] When the filter plate 4 needs to be disassembled for cleaning or replacement, manually pull down the linkage plate 16. This causes the connecting rod 15 to move the push rod 12 downwards, and its inclined side pushes the round head of the fixing buckle 6 outwards, overcoming the elastic force of the spring 10 and causing the fixing buckle 6 to disengage from the slide groove 18 of the support block 3. At this time, the filter plate 4 is released and can be removed together with the connecting bracket 5. After releasing the linkage plate 16, the spring 13 pushes the push rod 12 back to its original position, and the fixing buckle 6 returns to a vertical state under the action of the spring 10, making it easy to reinstall.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An impurity filter, comprising a filter housing (1), characterized in that, The top of the filter box (1) is fixedly connected to an end cap (2) with a feed hopper by bolts. The inner wall of the filter box (1) is fixedly connected to a support block (3). A filter plate (4) is provided on the top of the support block (3). A connecting frame (5) is fixedly connected to the bottom of the filter plate (4). A fixing buckle (6) is rotatably connected to the inner wall of the connecting frame (5). The filter plate (4) is interlocked with the support block (3) by the fixing buckle (6). The inside of the support block (3) is provided with a buckling mechanism (7) to release the restriction of the fixing buckle (6). A collection trough (8) for collecting waste is fixedly connected to one side of the filter plate (4). A discharge pipe (9) is connected through the bottom of the filter box (1).

2. The impurity filter according to claim 1, characterized in that, The connecting frame (5) is U-shaped, the fixing buckle (6) is L-shaped, and a spring (10) is fixedly connected to the outer wall of the fixing buckle (6). The end of the spring (10) away from the fixing buckle (6) is fixedly connected to the inner wall of the connecting frame (5).

3. The impurity filter according to claim 1, characterized in that, The unfastening mechanism (7) includes a sliding hole (11) at the bottom of the support block (3), a push rod (12) is slidably connected in the sliding hole (11), a spring (13) is sleeved on the push rod (12), and a connecting rod (15) is fixedly connected to the outer wall of the push rod (12).

4. The impurity filter according to claim 3, characterized in that, One end of the second spring (13) is fixedly connected to the inner wall of the sliding hole (11), and the other end of the second spring (13) is fixedly connected to the outer wall of the push rod (12), so that the push rod (12) can be driven downward by the connecting rod (15) and then return to its original position under the elastic action of the second spring (13).

5. The impurity filter according to claim 3, characterized in that, The outer wall of the filter box (1) is provided with a sliding opening (14) that communicates with the sliding hole (11). The connecting rod (15) passes through the sliding opening (14) and is slidably connected. The end of the connecting rod (15) away from the push rod (12) is fixedly connected to a linkage plate (16).

6. The impurity filter according to claim 1, characterized in that, The support block (3) has a groove (18) on the side near the fixing buckle (6), and the fixing buckle (6) slides in conjunction with the groove (18).

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