Filtering device suitable for polyurethane adhesive production

Abstract

The utility model discloses a filtering device suitable for polyurethane adhesive production, and relates to the technical field of polyurethane adhesive production equipment, the filtering device comprises a shell and a filtering barrel, the bottom of the shell is fixedly connected with a drainage funnel, the filtering barrel is fixedly erected in the shell, the side wall of the filtering barrel is provided with a plurality of filtering holes, and the top of the filtering barrel is provided with a feeding pipe; a pressing plate is mounted in an inner cavity of the shell in an up-down sliding manner, and an impurity removal pipe penetrating through the shell is arranged at the lower part of one side of the pressing plate; the top of the pressing plate is connected with a lifting driving assembly, and an overflowing opening is formed in the pressing plate. A turning plate capable of turning downwards is hinged in the overflowing opening; the device further comprises a collecting basket matched with the impurity removing pipe, the collecting basket is installed in the impurity removing pipe in a sliding and sealing mode, and a connecting rod is fixed to the outer wall of a back plate of the collecting basket. A sealing plate for sealing the outer end of the impurity removal pipe is fixed at the other end of the connecting rod; and the collecting basket which can be independently disassembled and assembled is arranged in the device, and the impurities can be cleaned only by opening the sealing plate and pulling out the collecting basket, so that the cleaning difficulty of the filtered impurities is obviously reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of polyurethane adhesive production equipment, and specifically to a filtration device suitable for polyurethane adhesive production. Background Technology

[0002] Polyurethane adhesives are adhesives that contain urethane or isocyanate groups in their molecular chains. Polyurethane adhesives are divided into two main categories: polyisocyanates and polyurethanes. Polyisocyanates contain isocyanate and urethane groups in their molecular chains, so polyurethane adhesives exhibit high activity and polarity. They have excellent chemical adhesion to substrates containing active hydrogen, such as porous materials like foam, plastics, wood, leather, fabrics, paper, and ceramics, as well as smooth materials like metals, glass, rubber, and plastics.

[0003] In the production of polyurethane adhesives, filtration devices are needed to filter out small amounts of impurities. While existing filtration devices can achieve continuous filtration, they struggle to clean the filtered impurities. Chinese patent CN218687079U discloses a filter for polyurethane adhesive production, comprising a collection shell. A drainage funnel is fixedly connected to the bottom of the collection shell. Multiple support legs are fixedly connected to the bottom of the outer wall of the collection shell. Multiple fixing rings are fixedly connected to the top of the outer wall of the collection shell. A bearing base is fixedly connected to the bottom of the inner wall of the collection shell. A filter mechanism is rotatably connected to the top of the bearing base. A drive limiting mechanism is installed on the top of the collection shell. Multiple bolt assemblies are installed between the drive limiting mechanism and the collection shell. However, cleaning impurities requires disassembling the filter mechanism, which is cumbersome and labor-intensive for workers.

[0004] Therefore, there is an urgent need to develop a new type of filtration device suitable for the production of polyurethane adhesives. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a filtration device suitable for the production of polyurethane adhesives.

[0006] The technical solution of this utility model is: a filtration device suitable for the production of polyurethane adhesives, comprising a shell and a filter barrel. A flow-guiding funnel is fixedly connected to the bottom of the shell, and a discharge port is provided at the lower end of the flow-guiding funnel. The filter barrel is fixedly mounted inside the shell, and several filter holes are opened on its side wall. A feed pipe is provided at its top, and a pressure plate is slidably installed in its inner cavity. A dirt removal pipe penetrating the shell is provided at the lower part of one side. A lifting drive assembly is connected to the top of the pressure plate, and an overflow port is opened on the pressure plate. A downward-flipping flap is hinged inside the overflow port, and the flipping angle of the flap is less than 90°.

[0007] It also includes a collection basket adapted to the impurity removal pipe. The collection basket is slidably and sealed inside the impurity removal pipe, and a connecting rod is fixed on the outer wall of its back plate. A sealing plate for sealing the outer end of the impurity removal pipe is fixed at the other end of the connecting rod. When the sealing plate contacts the outer end of the impurity removal pipe, the collection basket is located inside the filter barrel. Filter holes are opened on all the side plates of the collection basket except for the back plate.

[0008] Preferably, the lifting drive assembly includes a telescopic device and guide rods. The telescopic device is vertically fixed to the top of the filter barrel, and its output end is fixedly connected to the center of the pressure plate through the top plate of the filter barrel. The two guide rods are located on the left and right sides of the telescopic device, and both of them slide and seal through the top plate of the filter barrel, and their lower ends are fixedly connected to the pressure plate. A guide sleeve that slides and seals with the guide rods is fixedly installed on the top plate of the filter barrel.

[0009] Preferably, the telescopic device is a hydraulic cylinder.

[0010] Preferably, a torsion spring is installed at the hinge of the flap.

[0011] Preferably, the outer end of the impurity removal tube is flush with the outer wall of the shell, the sealing plate is detachably and sealed to the shell, and a handle is provided on its outer wall.

[0012] Preferably, the pressure plate has two flow ports.

[0013] Preferably, when the collection basket is located inside the filter barrel, the inner wall of the side plate of the collection basket is flush with the inner wall of the filter barrel.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] This device has a simple structure and is highly practical. It adopts a compression filtration method and achieves continuous feeding filtration through a pressure plate with a flap. The device is equipped with a collection basket that can be detached and installed separately. When cleaning impurities, simply open the sealing plate and pull out the collection basket, which significantly reduces the difficulty of cleaning the filtered impurities. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the pressure plate structure.

[0019] In the diagram: 1. Shell, 2. Filter barrel, 3. Drainage funnel, 4. Feed pipe, 5. Pressure plate, 6. Impurity removal pipe, 7. Flip plate, 8. Expansion joint, 9. Guide rod, 10. Guide sleeve, 11. Collection basket, 12. Connecting rod, 13. Sealing plate, 14. Handle. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0021] Reference Figure 1-3 As shown, a filtration device suitable for polyurethane adhesive production includes a housing 1 and a filter barrel 2. A flow-guiding funnel 3 is fixedly connected to the bottom of the housing 1, and a discharge port is provided at the lower end of the flow-guiding funnel 3. The filter barrel 2 is fixedly mounted inside the housing 1, and several filter holes are opened on its side wall. A feed pipe 4 is provided at its top. A pressure plate 5 is slidably installed in its inner cavity, and a dirt removal pipe 6 penetrating the housing 1 is provided on the lower part of one side. A lifting drive assembly is connected to the top of the pressure plate 5, and two flow ports are opened on the pressure plate 5. A downward-flipping flap 7 is hinged in the flow port, and a torsion spring is installed at the hinge of the flap 7. Its flipping angle is less than 90°. When not in operation, the flap 7 is in a horizontal state under the action of the torsion spring.

[0022] It also includes a collection basket 11 adapted to the impurity removal pipe 6. The collection basket 11 is slidably and sealed inside the impurity removal pipe 6, and a connecting rod 12 is fixed on the outer wall of its back plate. The other end of the connecting rod 12 is fixed with a sealing plate 13 for sealing the outer end of the impurity removal pipe 6. When the sealing plate 13 contacts the outer end of the impurity removal pipe 6, the collection basket 11 is located inside the filter barrel 2. At this time, the inner wall of the side plate of the collection basket 11 is flush with the inner wall of the filter barrel 2. Filter holes are opened on all the side plates of the collection basket 11 except for the back plate.

[0023] More specifically, the outer end of the sludge tube 6 is flush with the outer wall of the housing 1, the sealing plate 13 is detachably and sealed to the housing 1, and a handle 14 is provided on its outer wall.

[0024] During use, polyurethane adhesive enters the filter barrel 2 through the feed pipe 4. It pushes open the flap 7 and flows to the bottom of the pressure plate 5. When the amount of polyurethane adhesive in the filter barrel 2 reaches a certain level, the lifting drive component is activated, which drives the pressure plate 5 to move up and down reciprocally within the filter barrel 2. When the pressure plate 5 moves down, the flap 7 is in a horizontal position, closing the flow port. The pressure plate 5 pushes and squeezes the polyurethane adhesive through the filter holes, thereby accelerating the filtration efficiency. At the same time, the downward movement of the pressure plate 5 pushes the filtered impurities into the collection basket 11. When the pressure plate 5 moves up, the polyurethane adhesive above it pushes open the flap 7 and flows to the bottom of the pressure plate 5, thus not affecting continuous feeding. After filtration for a period of time, the filtered impurities collect in the collection basket 11. After filtration is completed, the sealing plate 13 is opened, and the collection basket 11 is pulled out through the handle 14 to clean the impurities inside.

[0025] This device has a simple structure and strong practicality. It adopts a compression filtration method and achieves continuous feeding filtration through a pressure plate 5 with a flap 7. The device is equipped with a collection basket 11 that can be detached. When cleaning impurities, simply open the sealing plate 13 and pull out the collection basket 11, which significantly reduces the difficulty of cleaning the filtered impurities. Example 2

[0026] As a preferred embodiment of this utility model, this embodiment designs the lifting drive component based on Embodiment 1, specifically as follows:

[0027] The lifting drive assembly includes a telescopic device 8 and guide rods 9. The telescopic device 8 is vertically fixed to the top of the filter barrel 2, and its output end passes through the top plate of the filter barrel 2 and is fixedly connected to the center of the pressure plate 5. The two guide rods 9 are located on the left and right sides of the telescopic device 8, respectively. Both of them slide and seal through the top plate of the filter barrel 2, and their lower ends are fixedly connected to the pressure plate 5. A guide sleeve 10 that slides and seals with the guide rods 9 is fixedly installed on the top plate of the filter barrel 2.

[0028] More specifically, in this embodiment, the telescoping device 8 is a hydraulic cylinder.

[0029] During filtration, the hydraulic cylinder is activated, which drives the pressure plate 5 to reciprocate up and down inside the filter barrel 2 via the piston rod.

[0030] This utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model, and the changed content still falls within the protection scope of this utility model.

Claims

1. A filtration device suitable for the production of polyurethane adhesives, comprising a housing and a filter barrel, wherein a flow-guiding funnel is fixedly connected to the bottom of the housing, and a discharge port is provided at the lower end of the flow-guiding funnel, characterized in that: The filter barrel is fixedly mounted inside the housing, with several filter holes on its side wall and a feed pipe at its top. A pressure plate is slidably installed in its inner cavity, and a dirt removal pipe penetrating the housing is provided on the lower part of one side. A lifting drive assembly is connected to the top of the pressure plate, and an overflow port is opened on the pressure plate. A flip-down flap is hinged inside the overflow port, and the flip-down angle of the flap is less than 90°. It also includes a collection basket adapted to the impurity removal pipe. The collection basket is slidably and sealed inside the impurity removal pipe, and a connecting rod is fixed on the outer wall of its back plate. A sealing plate for sealing the outer end of the impurity removal pipe is fixed at the other end of the connecting rod. When the sealing plate contacts the outer end of the impurity removal pipe, the collection basket is located inside the filter barrel. Filter holes are opened on all the side plates of the collection basket except for the back plate.

2. The filtration device for polyurethane adhesive production according to claim 1, characterized in that: The lifting drive assembly includes a telescopic device and guide rods. The telescopic device is vertically fixed to the top of the filter barrel, and its output end passes through the top plate of the filter barrel and is fixedly connected to the center of the pressure plate. The two guide rods are located on the left and right sides of the telescopic device, respectively. Both of them slide and seal through the top plate of the filter barrel, and their lower ends are fixedly connected to the pressure plate. A guide sleeve that slides and seals with the guide rods is fixedly installed on the top plate of the filter barrel.

3. A filtration device suitable for polyurethane adhesive production according to claim 2, characterized in that: The telescopic device is a hydraulic cylinder.

4. A filtration device suitable for polyurethane adhesive production according to claim 1, characterized in that: A torsion spring is installed at the hinge of the flap.

5. A filtration device suitable for polyurethane adhesive production according to claim 1, characterized in that: The outer end of the impurity removal tube is flush with the outer wall of the shell, and the sealing plate is detachably and sealed to the shell, with a handle on its outer wall.

6. A filtration device suitable for polyurethane adhesive production according to claim 1, characterized in that: The pressure plate has two flow ports.

7. A filtration device suitable for polyurethane adhesive production according to claim 1, characterized in that: When the collection basket is located inside the filter barrel, the inner wall of the side plate of the collection basket is flush with the inner wall of the filter barrel.

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