Anti-blocking assembly of filter for producing waterborne polyurethane resin

Abstract

The utility model relates to an anti-blocking component of a filter for producing waterborne polyurethane resin, which is arranged on a filter body and comprises a feeding hose communicated with the filter body, a filter element plate is arranged on the filter body, and the anti-blocking component is arranged on the filter body. According to the anti-blocking assembly of the filter for producing the waterborne polyurethane resin, the driving module is arranged to drive a cam to rotate, and due to the irregular shape of the cam, when the cam rotates, a supporting rod, an abutting rod, a filter element plate, a first filter screen, a second filter screen and a third filter screen are driven to reciprocate up and down, attached impurities are shaken off, and the anti-blocking effect is achieved. The water-based polyurethane resin filtering device has the advantages that the water-based polyurethane resin filtering device is matched with a first filtering net, a second filtering net and a third filtering net, graded filtering is realized, large particles are firstly filtered by a coarse filtering net, and the burden of small particles on a precise filtering net is reduced.

Description

Technical Field

[0001] This utility model relates to the field of waterborne polyurethane resin production technology, specifically to an anti-clogging component for a filter used in the production of waterborne polyurethane resin. Background Technology

[0002] Waterborne polyurethane is a new type of polyurethane system that uses water instead of organic solvents as the dispersion medium. It is also called water-dispersible polyurethane, water-based polyurethane, or water-based polyurethane. Waterborne polyurethane uses water as a solvent and has advantages such as being pollution-free, safe and reliable, having excellent mechanical properties, good compatibility, and being easy to modify. With the increasing awareness of environmental protection and the strengthening of environmental regulations, the research and development of environmentally friendly waterborne polyurethane has received increasing attention. Its application has expanded from leather finishing agents to fields such as coatings and adhesives, and it is gradually taking over the market of solvent-based polyurethane, representing the development direction of coatings and adhesives.

[0003] In the production process of waterborne polyurethane resin, the prepared liquid needs to be filtered to remove internal impurities, which requires a dedicated filter. Existing filters are gravity filters, in which waterborne polyurethane is filtered through a filter screen under gravity, and impurities remain on the filter screen. Due to the high viscosity of waterborne polyurethane, the efficiency of gravity filtration is very low, which seriously affects the filtration effect and production efficiency. Therefore, an anti-clogging component for a filter used in the production of waterborne polyurethane resin is proposed to solve the above technical problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an anti-clogging component for a filter used in the production of waterborne polyurethane resin. It has the advantage of preventing impurities from clogging the filter and solves the problem that existing filters rely on gravity filtration. Under the action of gravity, waterborne polyurethane passes through the filter screen and is filtered, but impurities remain on the filter screen. Because waterborne polyurethane has a high viscosity, the efficiency of filtration by gravity is very low, which seriously affects the filtration effect and production efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an anti-clogging component for a filter used in the production of waterborne polyurethane resin, which is disposed on the filter body and includes a feed hose connected to the filter body. The filter body is provided with a filter element plate and an anti-clogging component for preventing filter clogging is provided on the filter body.

[0006] The anti-clogging component includes an oscillation section and a graded filtration section;

[0007] The oscillation unit includes a drive module mounted on the filter body, a cam connected to the output shaft of the drive module, a support rod disposed on the filter element plate with its other end extending through and to the upper part of the filter body, an abutment plate disposed on the end of the support rod away from the filter element plate, four telescopic rods disposed on the abutment plate and arranged in a rectangular pattern, and four springs disposed on the abutment plate and arranged in a rectangular pattern.

[0008] Furthermore, the end of the telescopic rod away from the abutment plate is connected to the filter body, and the side of the spring away from the abutment plate is connected to the filter body.

[0009] Furthermore, the cam is located below the abutment plate, and the cam abuts against the abutment plate.

[0010] Furthermore, the spring is sleeved on the outside of the telescopic rod.

[0011] Furthermore, the filter body has a guide hole that fits with the support rod with a clearance.

[0012] Furthermore, the graded filtration section includes a first filter screen mounted on the filter element plate, a second filter screen mounted on the filter element plate and located outside the first filter screen, and a third filter screen mounted on the filter element plate and located outside the second filter screen.

[0013] Furthermore, the mesh size of the second filter screen is smaller than that of the first filter screen, and the mesh size of the third filter screen is smaller than that of the second filter screen.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The anti-clogging component of this filter for waterborne polyurethane resin production utilizes a drive module. Upon startup, the drive module rotates a cam. Due to the cam's irregular shape, its rotation causes the support rod, abutment rod, filter element plate, first filter screen, second filter screen, and third filter screen to reciprocate up and down. This movement of the first, second, and third filter screens shakes off attached impurities, preventing further accumulation and improving the filtration effect on the waterborne polyurethane resin. Simultaneously, the first, second, and third filter screens work together to achieve graded filtration, ensuring that larger particles are first filtered out by the coarse filter, reducing the burden on the precision filter by smaller particles and further minimizing clogging. This solves the problem of existing gravity-based filters where waterborne polyurethane is filtered under gravity, leaving impurities on the screen. Because waterborne polyurethane has high viscosity, gravity-based filtration is extremely inefficient, severely impacting filtration performance and production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the anti-clogging component structure of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the first filter screen structure of this utility model.

[0020] In the diagram: 1. Filter body; 2. Feed hose; 3. Filter plate; 4. Anti-clogging component; 401. Drive module; 402. Cam; 403. Support rod; 404. Abutment plate; 405. Telescopic rod; 406. Spring; 407. First filter screen; 408. Second filter screen; 409. Third filter screen. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 In this embodiment, an anti-clogging component for a waterborne polyurethane resin production filter is provided on the filter body 1, including a feed hose 2 connected to the filter body 1, a filter element plate 3 provided on the filter body 1, and an anti-clogging component 4 provided on the filter body 1 to prevent filter clogging.

[0023] The feed hose 2 penetrates the upper surface of the filter body 1 and extends into its interior, while the feed hose 2 is connected to the filter element plate 3.

[0024] The anti-clogging component 4 includes an oscillation section and a graded filtration section.

[0025] The oscillation section includes a drive module 401 mounted on the filter body 1, a cam 402 connected to the output shaft of the drive module 401, a support rod 403 mounted on the filter element plate 3 with its other end extending through and to the upper part of the filter body 1, an abutment plate 404 mounted on the end of the support rod 403 away from the filter element plate 3, four telescopic rods 405 mounted on the abutment plate 404 and arranged in a rectangular pattern, and four springs 406 mounted on the abutment plate 404 and arranged in a rectangular pattern.

[0026] Please see Figure 2-4In order to prevent impurities from clogging the filter, the anti-clogging component 4 in this embodiment includes an oscillation section and a graded filtration section.

[0027] The oscillation section includes a drive module 401 mounted on the filter body 1, a cam 402 connected to the output shaft of the drive module 401, a support rod 403 mounted on the filter element plate 3 with its other end extending through and to the upper part of the filter body 1, an abutment plate 404 mounted on the end of the support rod 403 away from the filter element plate 3, four telescopic rods 405 mounted on the abutment plate 404 and arranged in a rectangular pattern, and four springs 406 mounted on the abutment plate 404 and arranged in a rectangular pattern.

[0028] The drive module 401 includes, but is not limited to, devices or structures that can rotate the cam 402, such as DC motors, servo motors, and geared motors. Any device that can rotate the cam 402 is acceptable. Preferably, the drive module 401 in this application is a geared motor.

[0029] The end of the telescopic rod 405 away from the abutment plate 404 is connected to the filter body 1, and the side of the spring 406 away from the abutment plate 404 is connected to the filter body 1.

[0030] It should be noted that the telescopic rod 405 consists of a sleeve and a moving rod. One end of the moving rod passes through and extends into the interior of the sleeve. A limiting block located inside the sleeve is fixedly connected to the outside of the moving rod. A through hole adapted to the moving rod is opened on one side of the sleeve. By setting the limiting block, the moving rod is prevented from detaching from the sleeve during movement.

[0031] The cam 402 is located below the abutment plate 404, and the cam 402 abuts against the abutment plate 404.

[0032] Spring 406 is sleeved on the outside of telescopic rod 405.

[0033] When in use, the drive module 401 is activated. The output shaft of the drive module 401 drives the cam 402 to rotate. When the side of the cam 402 with the largest radius contacts the abutment plate 404, it drives the support rod 403, filter plate 3, first filter screen 407, second filter screen 408 and third filter screen 409 to move upward. At this time, the length of the telescopic rod 405 increases and the spring 406 is stretched. When the side of the cam 402 with the smallest radius contacts the abutment plate 404, it drives the support rod 403, filter plate 3, first filter screen 407, second filter screen 408 and third filter screen 409 to move downward. At this time, the length of the telescopic rod 405 decreases and the spring 406 is compressed.

[0034] The filter body 1 has a guide hole that fits with the support rod 403 with a clearance.

[0035] The graded filtration section includes a first filter screen 407 mounted on the filter element plate 3, a second filter screen 408 mounted on the filter element plate 3 and located outside the first filter screen 407, and a third filter screen 409 mounted on the filter element plate 3 and located outside the second filter screen 408.

[0036] The mesh size of the second filter screen 408 is smaller than that of the first filter screen 407, and the mesh size of the third filter screen 409 is smaller than that of the second filter screen 408.

[0037] In application, the first filter screen 407 with larger mesh size will first perform preliminary filtration of the water-based polyurethane resin, filtering out large particulate impurities. Then, the second filter screen 408 will filter the water-based polyurethane resin again. Finally, the third filter screen 409 with the smallest mesh size will filter the water-based polyurethane resin to remove smaller particulate impurities.

[0038] The working principle of the above embodiments is as follows:

[0039] In the production process of waterborne polyurethane resin, a filter body 1 is used to filter the waterborne polyurethane resin. The waterborne polyurethane resin to be filtered enters the filter body 1 through the feed hose 2. The first filter screen 407 with larger mesh size will first perform preliminary filtration of the waterborne polyurethane resin, filtering out large particles of impurities. Then, the second filter screen 408 will filter the waterborne polyurethane resin again. Finally, the third filter screen 409 with the smallest mesh size will filter the waterborne polyurethane resin, removing smaller particles of impurities. During filtration, impurities will adhere to the first filter screen 407, the second filter screen 408, and the third filter screen 409. At this time, the drive module 401 is activated. The output shaft of the drive module 401 drives the cam 402 to rotate. When the side of the cam 402 with the largest radius contacts the abutment plate 404... The cam 402 drives the support rod 403, filter plate 3, first filter screen 407, second filter screen 408, and third filter screen 409 to move upward. At this time, the length of the telescopic rod 405 increases, and the spring 406 is stretched. When the side with the smallest radius of the cam 402 contacts the abutment plate 404, the cam 402 drives the support rod 403, filter plate 3, first filter screen 407, second filter screen 408, and third filter screen 409 to move downward. At this time, the length of the telescopic rod 405 decreases, and the spring 406 is compressed. As the cam 402 rotates, the first filter screen 407, second filter screen 408, and third filter screen 409 move up and down. At this time, the first filter screen 407, second filter screen 408, and third filter screen 409 are in motion, and the attached impurities are shaken off, thus achieving the purpose of preventing impurities from clogging the system.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] 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 and spirit of the present invention.

Claims

1. An anti-clogging component for a filter used in the production of waterborne polyurethane resin, which is disposed on the filter body (1), characterized in that: Includes a feed hose (2) connected to the filter body (1), a filter plate (3) is provided on the filter body (1), and an anti-clogging component (4) is provided on the filter body (1) to prevent filter clogging. The anti-clogging component (4) includes an oscillation section and a graded filtration section; The oscillation unit includes a drive module (401) mounted on the filter body (1), a cam (402) connected to the output shaft of the drive module (401), a support rod (403) mounted on the filter plate (3) with the other end extending through and to the upper part of the filter body (1), an abutment plate (404) mounted on the end of the support rod (403) away from the filter plate (3), four telescopic rods (405) mounted on the abutment plate (404) and arranged in a rectangular shape, and four springs (406) mounted on the abutment plate (404) and arranged in a rectangular shape.

2. The anti-clogging component of a filter for producing waterborne polyurethane resin according to claim 1, characterized in that: The end of the telescopic rod (405) away from the abutment plate (404) is connected to the filter body (1), and the side of the spring (406) away from the abutment plate (404) is connected to the filter body (1).

3. The anti-clogging component of a filter for producing waterborne polyurethane resin according to claim 1, characterized in that: The cam (402) is located below the abutment plate (404), and the cam (402) abuts against the abutment plate (404).

4. The anti-clogging component of a filter for producing waterborne polyurethane resin according to claim 1, characterized in that: The spring (406) is sleeved on the outside of the telescopic rod (405).

5. The anti-clogging component of a filter for producing waterborne polyurethane resin according to claim 1, characterized in that: The filter body (1) has a guide hole that fits with the support rod (403) with a clearance.

6. The anti-clogging component of a filter for producing waterborne polyurethane resin according to claim 1, characterized in that: The graded filtration section includes a first filter screen (407) mounted on the filter element plate (3), a second filter screen (408) mounted on the filter element plate (3) and located outside the first filter screen (407), and a third filter screen (409) mounted on the filter element plate (3) and located outside the second filter screen (408).

7. The anti-clogging component of a filter for producing waterborne polyurethane resin according to claim 6, characterized in that: The mesh size of the second filter (408) is smaller than that of the first filter (407), and the mesh size of the third filter (409) is smaller than that of the second filter (408).

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