Hot melt adhesive filtering system

Abstract

The utility model provides a hot melt adhesive filtering system which comprises a first-stage filtering device and a second-stage filtering device, the first-stage filtering device comprises a first feeding pipe, a second feeding pipe, a discharging pipe, a first filtering net arranged on the discharging pipe, and a net replacing assembly arranged among the first feeding pipe, the second feeding pipe and the discharging pipe; according to the hot melt adhesive filtering device, the primary filtering device and the secondary filtering device are arranged to filter a hot melt adhesive for multiple times, so that the load of the primary filtering device is effectively reduced, and the purification degree of solid impurity particles in a hot melt adhesive material is improved; the situation that the first filter screen is blocked rapidly due to too large flow of the hot melt adhesive on the first filter screen is avoided, the replacing frequency of the first filter screen is reduced, and the hot melt adhesive filtering device has the advantages of being high in filtering efficiency, high in hot melt adhesive finished product quality, easy to operate, high in automation degree and convenient to popularize and implement.

Description

Technical Field

[0001] The present application belongs to the technical field of hot melt adhesive production, and specifically relates to a hot melt adhesive filtration system. Background Art

[0002] Technical issues solved:

[0003] In the prior art, with the development of resin synthesis technology, hot melt adhesive has been widely used in various fields. Hot melt adhesive is a plastic adhesive. Within a certain temperature range, its physical state changes with temperature, while its chemical properties remain unchanged. It is an environmentally friendly chemical product.

[0004] In the prior art, during the actual production process of hot melt adhesive, solid impurities exist in the raw materials in a molten state, and these solid impurities will affect the quality of the hot melt adhesive. In the prior art, a filtering system is usually used to filter the molten hot melt adhesive material to improve the quality of the hot melt adhesive product;

[0005] In the prior art, in the process of filtering hot melt adhesive material, a primary filtration system is usually used for filtration, and the primary filtration system is directly connected to a separate feed pipe. On the one hand, the filtration load of the primary filtration system is large, which can easily cause the filter screen of the primary filtration system to be blocked by solid particles, increasing the frequency of filter screen replacement. On the other hand, the filtration capacity of the primary filtration system is low, and there are still solid impurities with smaller particle sizes in the filtered hot melt adhesive material, which affects the quality of the hot melt adhesive product. Therefore, improvements are urgently needed. Utility Model Content

[0006] In order to solve the technical problems in the prior art that, in the hot melt adhesive production process, the hot melt adhesive contains solid impurity particles, the primary filtration system has a low filtration capacity, the primary filtration system is prone to blockage when the hot melt adhesive is produced in large quantities, the filter screen is frequently replaced, and the quality of the hot melt adhesive product is low, a hot melt adhesive filtration system is proposed.

[0007] The present application adopts the following scheme, a hot melt adhesive filtration system, including a primary filtration device and a secondary filtration device connected to the primary filtration device, the primary filtration device including a first feed pipe, a second feed pipe inclined relative to the first feed pipe, an outlet pipe connected to the first feed pipe and the second feed pipe, a first filter screen arranged on the outlet pipe, and a screen changing assembly arranged between the first feed pipe, the second feed pipe and the outlet pipe.

[0008] Furthermore, there is an angle A between the first feed pipe and the second feed pipe, and there is an angle B between the axis of the first feed pipe and the horizontal line, the angle A satisfies the following relationship: 120°≤angle A≤150°, and the angle B satisfies the following relationship: 30°≤angle B≤45°.

[0009] Furthermore, the screen changing assembly includes a screen changing hole arranged at the intersection of the first feed pipe, the second feed pipe and the discharge pipe, and a cover body rotatably arranged on the screen changing hole, the first feed pipe, the second feed pipe and the discharge pipe are all connected to the screen changing hole, and the screen changing hole is located above the first filter screen.

[0010] Furthermore, the outer circumferences of the first feed pipe and the second feed pipe are both provided with a heat-insulating layer group, and the heat-insulating layer group is used to maintain the temperature inside the first feed pipe and the second feed pipe.

[0011] Furthermore, the insulation layer group includes an insulation layer coated on the outer periphery of the first feed pipe, and a protective layer coated on the outer periphery of the insulation layer, the insulation layer is made of glass fiber felt or polyurethane, and the protective layer is made of stainless steel or aluminum alloy.

[0012] Furthermore, the secondary filtering device includes a secondary filtering tank connected to the discharge pipe, and a secondary filtering mesh group arranged in the secondary filtering tank. After the hot melt adhesive is filtered by the primary filtering device, it can be transported to the secondary filtering mesh group for re-filtration.

[0013] Furthermore, the secondary filter screen group includes a second filter screen, a third filter screen and a fourth filter screen which are arranged in sequence in the secondary filter tank along the height direction of the secondary filter tank, and the mesh apertures of the second filter screen, the third filter screen and the fourth filter screen are all smaller than the mesh aperture of the first filter screen. After the hot melt adhesive is filtered by the primary filtration device, it can be transported to the secondary filter tank and filtered again through the second filter screen, the third filter screen and the fourth filter screen in sequence.

[0014] Furthermore, one end of the second filter screen is inclined toward the feed port of the secondary filter tank, and an angle C is provided between the end of the second filter screen close to the feed port of the secondary filter tank and the tank wall of the secondary filter tank; one end of the third filter screen is inclined toward the feed port away from the secondary filter tank, and an angle D is provided between the end of the third filter screen away from the feed port of the secondary filter tank and the tank wall of the secondary filter tank; the angle C satisfies the following relationship: 45°≤angle C≤60°, and the angle D satisfies the following relationship: 45°≤angle D≤60°.

[0015] Furthermore, the mesh sizes of the second filter and the third filter are both larger than that of the fourth filter, and the mesh size of the second filter is equal to that of the third filter.

[0016] Furthermore, the secondary filtering device also includes a pressurizing mechanism disposed on the secondary filtering tank, and the pressurizing mechanism is used to increase the pressure value in the secondary filtering tank.

[0017] Compared with the prior art, this application has the following beneficial effects:

[0018] The present application provides a hot melt adhesive filtration system, including a primary filtration device and a secondary filtration device, wherein the primary filtration device includes a first feed pipe, a second feed pipe, a discharge pipe, a first filter screen arranged on the discharge pipe, and a screen changing assembly arranged between the first feed pipe, the second feed pipe and the discharge pipe. The hot melt adhesive is filtered multiple times by arranging the primary filtration device and the secondary filtration device, thereby effectively reducing the load of the primary filtration device and improving the degree of purification of solid impurity particles in the hot melt adhesive. By arranging the first feed pipe and the second feed pipe inclined to each other, it is avoided that the hot melt adhesive flow on the first filter screen is too large and the first filter screen is quickly blocked, thereby reducing the frequency of the first filter screen. The system has the advantages of high filtration efficiency, high quality of hot melt adhesive products, simple operation, high degree of automation, and easy promotion and implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments.

[0020] Figure 1 It is a structural schematic diagram of the hot melt adhesive filtration system of the present application;

[0021] Figure 2 This application Figure 1 A partial enlarged view of the middle A;

[0022] Figure 3 is a top view of the hot melt adhesive filtration system of the present application;

[0023] Figure 4 This application Figure 3 Sectional view at the middle BB;

[0024] Figure 5 This application Figure 4 A partial enlarged view of point C in the middle. DETAILED DESCRIPTION

[0025] Combined with Figure 1-5As shown, the technical scheme is further described, the hot melt adhesive filtration system includes a primary filtration device 1, and a secondary filtration device 2 connected to the primary filtration device 1, the primary filtration device 1 includes a first feed pipe 10, a second feed pipe 11 inclined relative to the first feed pipe 10, a discharge pipe 13 connected to the first feed pipe 10 and the second feed pipe 11, a first filter screen 14 arranged on the discharge pipe 13, and a screen changing assembly 15 arranged between the first feed pipe 10, the second feed pipe 11 and the discharge pipe 13.

[0026] The present application provides a hot melt adhesive filtration system, including a primary filtration device and a secondary filtration device, wherein the primary filtration device includes a first feed pipe, a second feed pipe, a discharge pipe, a first filter screen arranged on the discharge pipe, and a screen changing assembly arranged between the first feed pipe, the second feed pipe and the discharge pipe. The hot melt adhesive is filtered multiple times by arranging the primary filtration device and the secondary filtration device, thereby effectively reducing the load of the primary filtration device and improving the degree of purification of solid impurity particles in the hot melt adhesive. By arranging the first feed pipe and the second feed pipe inclined to each other, it is avoided that the hot melt adhesive flow on the first filter screen is too large and the first filter screen is quickly blocked, thereby reducing the frequency of the first filter screen. The system has the advantages of high filtration efficiency, high quality of hot melt adhesive products, simple operation, high degree of automation, and easy promotion and implementation.

[0027] During the implementation of this embodiment, there is an angle A between the first feed pipe 10 and the second feed pipe 11, and there is an angle B between the axis of the first feed pipe 10 and the horizontal line. The angle A satisfies the following relationship: 120°≤angle A≤150°, and the angle B satisfies the following relationship: 30°≤angle B≤45°.

[0028] During the actual implementation process, the angle A is equal to 120°, the angle B is equal to 30°, the first feed pipe and the second feed pipe are arranged on the pipe rack, and the discharge pipe includes a discharge part and a reducing part arranged on the discharge part. The diameter of the reducing part is smaller than the diameter of the discharge part. By arranging the first feed pipe and the second feed pipe inclined to each other, the hot melt adhesive flow on the first filter screen is prevented from being too large and quickly clogging the first filter screen, thereby reducing the frequency of changing the first filter screen and improving the production efficiency of the hot melt adhesive.

[0029] During the actual implementation of this embodiment, the screen changing assembly 15 includes a screen changing hole 16 arranged at the intersection of the first feed pipe 10, the second feed pipe 11 and the discharge pipe 13, and a cover body 17 rotatably arranged on the screen changing hole 16. The first feed pipe 10, the second feed pipe 11 and the discharge pipe 13 are all connected to the screen changing hole 16, and the screen changing hole 16 is located above the first filter screen 14.

[0030] In actual implementation, a connection ear is provided on the mesh changing hole, a connection column is provided on the cover body, the connection column can be matched and rotated in the connection ear, the cover body can be rotated away from or close to the mesh changing hole through the connection, the first filter can be detachably arranged in the discharge pipe, a support convex edge is provided on the inner wall of the discharge pipe, the first filter can be matched and mounted on the support convex edge, after the first filter is mounted on the support convex edge, the first filter can be threadedly connected to the support convex edge, when the filter needs to be replaced, the user can open the cover body and replace the first filter through the mesh changing hole. .

[0031] During the actual implementation of this embodiment, a thermal insulation layer group 3 is provided on the outer periphery of the first feed pipe 10 and the second feed pipe 11 , and the thermal insulation layer group 3 is used to maintain the temperature inside the first feed pipe 10 and the second feed pipe 11 .

[0032] During the actual implementation of this embodiment, the insulation layer group 3 includes an insulation layer wrapped around the outer periphery of the first feeding pipe 10, and a protective layer wrapped around the outer periphery of the insulation layer. The insulation layer is made of glass fiber felt or polyurethane, and the protective layer is made of stainless steel or aluminum alloy.

[0033] During the actual implementation of this embodiment, the secondary filtering device 2 includes a secondary filtering tank 20 connected to the discharge pipe 13, and a secondary filter mesh group 21 arranged in the secondary filtering tank 20. After the hot melt adhesive is filtered by the primary filtering device 1, it can be transported to the secondary filter mesh group 21 for re-filtration.

[0034] During the actual implementation of this embodiment, the secondary filter screen group 21 includes a second filter screen 210, a third filter screen 211 and a fourth filter screen 212 which are arranged in sequence in the secondary filter tank 20 along the height direction of the secondary filter tank 20. The mesh apertures of the second filter screen 210, the third filter screen 211 and the fourth filter screen 212 are all smaller than the mesh aperture of the first filter screen 14. After the hot melt adhesive is filtered by the primary filter device 1, it can be transported to the secondary filter tank 20 and filtered again through the second filter screen 210, the third filter screen 211 and the fourth filter screen 212 in sequence.

[0035] During the actual implementation of this embodiment, one end of the second filter screen 210 is inclined toward the feed port of the secondary filter tank 20, and an angle C is provided between the end of the second filter screen 210 close to the feed port of the secondary filter tank 20 and the tank wall of the secondary filter tank 20. One end of the third filter screen 211 is inclined toward the feed port away from the secondary filter tank 20, and an angle D is provided between the end of the third filter screen 211 away from the feed port of the secondary filter tank 20 and the tank wall of the secondary filter tank 20. The angle C satisfies the following relationship: 45°≤angle C≤60°, and the angle D satisfies the following relationship: 45°≤angle D≤60°.

[0036] In the actual implementation process, the angle C is equal to 45°, and the angle D is equal to 45°. By tilting the second filter and the third filter, the filtration efficiency can be effectively improved. The tilted filter can use gravity to naturally settle larger particles of impurities to the bottom of the filter during the flow of hot melt adhesive, thereby reducing the decrease in filtration efficiency caused by impurity blockage. In addition, the tilt angle can be adjusted according to the fluid properties of the hot melt adhesive to adapt to hot melt adhesives of different types and viscosities, further improving the filtration effect. Furthermore, the tilted filter is more convenient to clean and replace. Due to the tilt angle, impurities tend to concentrate on one side of the filter, making cleaning easier and avoiding the difficulty of cleaning caused by uneven distribution of impurities. At the same time, when replacing the filter, the tilted setting is conducive to the smooth placement of the new filter and the quick removal of the old filter, thereby improving production efficiency.

[0037] During the actual implementation of this embodiment, the mesh sizes of the second filter 210 and the third filter 211 are both larger than the fourth filter 212 , and the mesh size of the second filter 210 is equal to the mesh size of the third filter 211 .

[0038] During the actual implementation of this embodiment, the secondary filtering device 2 further includes a pressurizing mechanism disposed on the secondary filtering tank 20 , and the pressurizing mechanism is used to increase the pressure value in the secondary filtering tank 20 .

[0039] In the actual implementation process, by setting up a primary filtering device, a secondary filtering device, and multiple filter screens, the hot melt adhesive material can be efficiently filtered to improve the quality of the hot melt adhesive product.

[0040] The present application provides a hot melt adhesive filtration system, including a primary filtration device and a secondary filtration device, wherein the primary filtration device includes a first feed pipe, a second feed pipe, a discharge pipe, a first filter screen arranged on the discharge pipe, and a screen changing assembly arranged between the first feed pipe, the second feed pipe and the discharge pipe. The hot melt adhesive is filtered multiple times by arranging the primary filtration device and the secondary filtration device, thereby effectively reducing the load of the primary filtration device and improving the degree of purification of solid impurity particles in the hot melt adhesive. By arranging the first feed pipe and the second feed pipe inclined to each other, it is avoided that the hot melt adhesive flow on the first filter screen is too large and the first filter screen is quickly blocked, thereby reducing the frequency of the first filter screen. The system has the advantages of high filtration efficiency, high quality of hot melt adhesive products, simple operation, high degree of automation, and easy promotion and implementation.

[0041] The above are only embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Hot melt adhesive filtration system, characterized in that: The invention comprises a primary filtering device (1) and a secondary filtering device (2) connected to the primary filtering device (1), wherein the primary filtering device (1) comprises a first feed pipe (10), a second feed pipe (11) arranged obliquely relative to the first feed pipe (10), a discharge pipe (13) connected to the first feed pipe (10) and the second feed pipe (11), a first filter screen (14) arranged on the discharge pipe (13), and a screen changing assembly (15) arranged between the first feed pipe (10), the second feed pipe (11) and the discharge pipe (13).

2. The hot melt adhesive filtration system according to claim 1, characterized in that: There is an angle A between the first feed pipe (10) and the second feed pipe (11), and there is an angle B between the axis of the first feed pipe (10) and the horizontal line, the angle A satisfies the following relationship: 120°≤angle A≤150°, and the angle B satisfies the following relationship: 30°≤angle B≤45°.

3. The hot melt adhesive filtration system according to claim 1, characterized in that: The screen changing assembly (15) comprises a screen changing hole (16) arranged at the intersection of the first feed pipe (10), the second feed pipe (11) and the discharge pipe (13), and a cover body (17) rotatably arranged on the screen changing hole (16), the first feed pipe (10), the second feed pipe (11) and the discharge pipe (13) are all connected to the screen changing hole (16), and the screen changing hole (16) is located above the first filter screen (14).

4. The hot melt adhesive filtration system according to claim 1, characterized in that: The first feed pipe (10) and the second feed pipe (11) are both provided with a heat-insulating layer group (3) on their outer peripheries, and the heat-insulating layer group (3) is used to maintain the temperature inside the first feed pipe (10) and the second feed pipe (11).

5. The hot melt adhesive filtration system according to claim 4, characterized in that: The insulation layer group (3) comprises an insulation layer coated on the outer periphery of the first feed pipe (10), and a protective layer coated on the outer periphery of the insulation layer, wherein the insulation layer is made of glass fiber felt or polyurethane, and the protective layer is made of stainless steel or aluminum alloy.

6. The hot melt adhesive filtration system according to claim 1, characterized in that: The secondary filtering device (2) comprises a secondary filtering tank (20) connected to the discharge pipe (13) by a pipeline, and a secondary filtering mesh group (21) arranged in the secondary filtering tank (20). After the hot melt adhesive is filtered by the primary filtering device (1), it can be transported to the secondary filtering mesh group (21) for re-filtration.

7. The hot melt adhesive filtration system according to claim 6, characterized in that: The secondary filter screen group (21) comprises a second filter screen (210), a third filter screen (211) and a fourth filter screen (212) which are arranged in sequence in the secondary filter tank (20) along the height direction of the secondary filter tank (20); the mesh apertures of the second filter screen (210), the third filter screen (211) and the fourth filter screen (212) are all smaller than the mesh aperture of the first filter screen (14); after the hot melt adhesive is filtered by the primary filtering device (1), it can be transported to the secondary filter tank (20) and filtered again by the second filter screen (210), the third filter screen (211) and the fourth filter screen (212) in sequence.

8. The hot melt adhesive filtration system according to claim 7, characterized in that: One end of the second filter screen (210) is inclined toward the feed port of the secondary filter tank (20), and an angle C is provided between the end of the second filter screen (210) close to the feed port of the secondary filter tank (20) and the tank wall of the secondary filter tank (20). One end of the third filter screen (211) is inclined toward the feed port away from the secondary filter tank (20), and an angle D is provided between the end of the third filter screen (211) away from the feed port of the secondary filter tank (20) and the tank wall of the secondary filter tank (20), and the angle C satisfies the following relationship: 45°≤angle C≤60°, and the angle D satisfies the following relationship: 45°≤angle D≤60°.

9. The hot melt adhesive filtration system according to claim 7, characterized in that: The mesh apertures of the second filter screen (210) and the third filter screen (211) are both larger than the fourth filter screen (212), and the mesh aperture of the second filter screen (210) is equal to the mesh aperture of the third filter screen (211).

10. The hot melt adhesive filtration system according to claim 6, characterized in that: The secondary filtering device (2) further comprises a pressurizing mechanism disposed on the secondary filtering tank (20), the pressurizing mechanism being used to increase the pressure value in the secondary filtering tank (20).

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