Filtering machine for producing water-soluble adhesive

Abstract

The utility model relates to the technical field of adhesive production, and disclose a kind of filter for water-soluble adhesive production, including the rack with mobile assembly in bottom, filter cartridge is provided on rack, transfer temperature control unit, it is set on rack, transfer temperature control unit is separated to form transfer space and heat conduction space by partition, heating assembly is provided in heat conduction space;Conveying component is set on rack, the input end of conveying component is connected to glue liquid source, and output end is communicated with conveying space;The utility model can make glue liquid when entering filter cartridge keep in suitable filtration temperature range, to further reduce glue liquid flow resistance, prevent the filter core filter hole surface of filter cartridge from forming "filter cake layer" by accumulation, to further prevent the problem of large-area clogging filter material.

Description

Technical Field

[0001] This utility model relates to the field of adhesive production technology, specifically a filter machine for producing water-soluble adhesives. Background Technology

[0002] Water-soluble adhesives, such as starch adhesives, polyvinyl alcohol (PVA) adhesives, waterborne acrylic emulsions, and waterborne polyurethane (APU), have been widely used in various industries, including packaging, papermaking, textiles, construction, and automobiles, due to their significant advantages such as environmental friendliness, safety, and ease of use. However, during their production process, the presence of impurities, reaction byproducts, undissolved particles, or gel clusters in the raw materials can severely weaken the adhesive properties of the final product, affect its appearance, and reduce its storage stability.

[0003] Currently, in the pretreatment stage of packaging coatings, filters are typically used to filter polyvinyl alcohol (PVA) adhesive. However, at room temperature (20-30℃), high-polymerization, high-concentration PVA adhesives (such as PVA1799, 5% concentration) have extremely high viscosity, reaching thousands to tens of thousands of centipoises (cP), resulting in a significant increase in material flow resistance. This slows the passage of material through filter media (such as filter cartridges and filter bags), and easily leads to the accumulation of a "filter cake layer" on the filter cartridge surface, causing widespread clogging of the filter media.

[0004] In view of this, we designed a filter specifically for the production of water-soluble adhesives to effectively solve the above problems. Utility Model Content

[0005] This invention provides a filter for the production of water-soluble adhesives. By combining a transfer temperature control unit and a conveying component, the adhesive liquid is kept within a suitable filtration temperature range when it enters the filter cartridge. This solves the problem mentioned in the background art of the accumulation of a "filter cake layer" on the surface of the filter element, which leads to large-area clogging of the filter material.

[0006] This utility model provides the following technical solution: A filter for producing water-soluble adhesives includes a frame with a movable component at the bottom, a filter cartridge mounted on the frame, and a transfer temperature control unit mounted on the frame. The transfer temperature control unit is divided into a transfer space and a heat conduction space by a partition, and a heating component is mounted in the heat conduction space. A conveying component is mounted on the frame, with its input end connected to an adhesive source and its output end connected to the conveying space.

[0007] As a preferred embodiment of this utility model, the transfer temperature control unit includes a transfer box fixedly connected to the frame, and the partition is disposed in the cavity of the transfer box.

[0008] As a preferred embodiment of this utility model, the transfer box is equipped with two sets of temperature sensors, the detection ends of which extend into the transfer space and the heat conduction space, respectively.

[0009] As a preferred embodiment of this utility model, the conveying assembly includes a gear pump fixedly connected to the frame, wherein the input end of the gear pump is provided with an inlet pipe, and the output end of the gear pump is connected to the transfer space through an outlet pipe.

[0010] As a preferred embodiment of this utility model, the transfer box is provided with a connecting pipe, one end of which is connected to the transfer box and the other end of which is fixedly connected to the filter cartridge. An insulation layer is provided on the outer wall of the connecting pipe.

[0011] As a preferred embodiment of this utility model, the filter cartridge is provided with a drain pipe, and the drain pipe is provided with a valve.

[0012] As a preferred embodiment of this invention, the moving component includes casters disposed at the bottom of the frame.

[0013] As a preferred embodiment of this utility model, a support platform is fixedly connected to the frame, and the filter cartridge is fixedly connected to the support platform.

[0014] Compared with the prior art, this utility model provides a filter for the production of water-soluble adhesives, which has the following beneficial effects: 1. In this filter for producing water-soluble adhesives, the water source in the heat conduction space is heated by the heating component, so that the adhesive solution is kept within a suitable filtration temperature range when it enters the filter cartridge, thereby reducing the flow resistance of the adhesive solution and preventing the accumulation of "filter cake layer" on the surface of the filter element pores of the filter cartridge, thus preventing the problem of large-area clogging of the filter material.

[0015] The parts of this device not described herein are the same as or can be implemented using existing technologies. This invention can keep the adhesive liquid within a suitable filtration temperature range when it enters the filter cartridge, thereby reducing the flow resistance of the adhesive liquid and preventing it from accumulating on the surface of the filter element pores of the filter cartridge to form a "filter cake layer", thus preventing the problem of large-area clogging of the filter material. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a schematic diagram of the transfer temperature control unit of this utility model; Figure 3 This is a schematic diagram of the heating component of this utility model; Figure 4 This utility model Figure 3 A schematic diagram of part A.

[0018] In the diagram: 1. Frame; 101. Placement platform; 102. Casters; 2. Support platform; 3. Filter cartridge; 301. Drain pipe; 302. Valve; 4. Transfer temperature control unit; 401. Temperature sensor; 5. Connecting pipe; 6. Insulation layer; 7. Conveying assembly; 701. Inlet pipe; 702. Outlet pipe; 8. Partition; 9. Heating assembly. Detailed Implementation

[0019] 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.

[0020] Water-soluble adhesives, such as starch adhesives, polyvinyl alcohol (PVA) adhesives, water-based acrylic emulsions, and water-based polyurethane (APU), have been widely used in various industries, including packaging, papermaking, textiles, construction, and automobiles, due to their significant advantages such as environmental friendliness, safety, and ease of use. However, during their production process, the presence of impurities, reaction byproducts, undissolved particles, or gel clusters in the raw materials can severely weaken the adhesive properties of the final product, affect its appearance, and reduce its storage stability. In the pretreatment stage of packaging coatings, bag filters, specifically filter cartridges 3, are typically used to filter the polyvinyl alcohol (PVA) adhesive. However, at room temperature (20-30℃), high-polymerization, high-concentration PVA adhesives (such as PVA1799, 5% concentration) have extremely high viscosity, reaching thousands to tens of thousands of centipoises (cP), resulting in a significant increase in material flow resistance.

[0021] Example: Reference Figures 1-4This utility model provides a filter machine for the production of water-soluble adhesives. Its basic components mainly include a frame 1 with casters 102 at the bottom, which allows the frame 1 to be moved easily. A placement platform 101, which is a weighing platform, is also provided on the frame 1. A support platform 2 is provided on the frame 1, and a filter cartridge 3 is provided on the support platform 2. A filter bag is installed inside the filter cartridge 3. A transfer box is also provided on the frame 1, which is the main component of the transfer temperature control unit 4. The transfer box is divided into a transfer space and a heat conduction space by a partition 8. A heating component 9, which is an electric heating wire, is provided in the heat conduction space. A water supply pipe is also provided on the transfer box to replenish the water source of the internal heat conduction space. It is best to use purified water to reduce the formation of scale. The water source temperature can be set to 50-60℃, for example, 55℃, which needs to be 5-10℃ higher than the target adhesive temperature because there is heat conduction loss in the partition 8.

[0022] Specifically, during the heating process, purified water is uniformly heated by heating wires within the heat-conducting space. The heat is then stably transferred to the transfer space via partition 8, ensuring the adhesive reaches a suitable filtration temperature (40-45℃, e.g., 42℃) before entering the filter bag. The transfer box is equipped with two sets of temperature sensors 401, with their detection ends extending into the transfer space and heat-conducting space respectively. These sensors monitor and provide real-time feedback of the water temperature to the temperature control system on the frame 1. When the water temperature approaches the set upper limit, the power of the heating wires is automatically adjusted to prevent localized overheating that could alter the adhesive's properties. The water supply pipe connects to an external purified water supply device and is equipped with a float valve to automatically control the water level, preventing insufficient water supply during heating and potential safety hazards. During filtration, the high-viscosity PVA adhesive, after being buffered in the transfer space, flows evenly into the filter bag through the inlet at the top of the filter cartridge 3. At 50-60℃, the adhesive's fluidity is significantly improved, effectively reducing filtration resistance. Specifically, a gear pump, also known as the conveying assembly 7, is installed on the frame 1. The input end of the gear pump is equipped with an inlet pipe 701, and the output end of the gear pump is connected to the transfer space through an outlet pipe 702. A connecting pipe 5 is installed on the transfer box. One end of the connecting pipe 5 is connected to the transfer box, and the other end of the connecting pipe 5 is fixedly connected to the filter cartridge 3. An insulation layer 6 is fitted on the outer wall of the connecting pipe 5. When the gear pump is started, it can draw in the high-viscosity PVA adhesive to be filtered through the inlet pipe 701 and then through the outlet pipe 702. The adhesive solution is transported to the transfer space to supply adhesive for subsequent filtration operations. The connecting pipe 5 allows the adhesive solution in the transfer space to flow smoothly into the filter cartridge 3. A pressure sensor is installed at the top of the filter cartridge 3 to detect the internal pressure value, ensuring the continuity of the filtration process. The presence of the insulation layer 6 effectively reduces heat loss of the adhesive solution during its transport within the connecting pipe 5, ensuring that the adhesive solution remains within a suitable filtration temperature range when entering the filter cartridge 3, thereby reducing the flow resistance of the adhesive solution. This prevents the accumulation of a "filter cake layer" on the surface of the filter element pores in the filter cartridge 3, thus preventing large-area clogging of the filter media.

[0023] Specifically, a drain pipe 301 is provided on the filter cartridge 3, and a valve 302 is provided on the drain pipe 301. One end of the drain pipe 301 is connected to the inside of the filter cartridge 3, and the other end extends to the outside of the filter cartridge 3 for draining the filtered glue. The valve 302 controls the opening and closing of the drain pipe 301. When it is necessary to drain the glue in the filter cartridge 3, the valve 302 can be opened to allow the glue to flow out smoothly. When it is not necessary to drain or perform other operations, the valve 302 can be closed to prevent accidental leakage of glue.

[0024] Components not described in detail in this article are existing technologies.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A filter for producing water-soluble adhesives, comprising a frame (1) with a movable component at the bottom, and a filter cartridge (3) disposed on the frame (1), characterized in that, Also includes: The intermediate temperature control unit (4) is mounted on the frame (1). The transfer temperature control unit (4) is divided into a transfer space and a heat conduction space by a partition (8), and a heating component (9) is installed in the heat conduction space. The conveying assembly (7) is mounted on the frame (1). The input end of the conveying assembly (7) is connected to the adhesive source, and the output end is connected to the conveying space.

2. The filter for producing water-soluble adhesives according to claim 1, characterized in that, The transfer temperature control unit (4) includes a transfer box fixedly connected to the frame (1), and the partition (8) is disposed in the cavity of the transfer box.

3. A filter for producing water-soluble adhesives according to claim 2, characterized in that, The transfer box is equipped with two sets of temperature sensors (401), and the detection ends of the two sets of temperature sensors (401) extend into the transfer space and the heat conduction space, respectively.

4. A filter for producing water-soluble adhesives according to claim 1, characterized in that, The conveying assembly (7) includes a gear pump fixedly connected to the frame (1). The gear pump has an inlet pipe (701) at its input end and an outlet pipe (702) at its output end, which is connected to the transfer space.

5. A filter for producing water-soluble adhesives according to claim 2, characterized in that, The transfer box is provided with a connecting pipe (5), one end of which is connected to the transfer box, and the other end of which is fixedly connected to the filter cartridge (3). The outer wall of the connecting pipe (5) is covered with a heat insulation layer (6).

6. A filter for producing water-soluble adhesives according to claim 5, characterized in that, The filter cartridge (3) is provided with a drain pipe (301), and the drain pipe (301) is provided with a valve (302).

7. A filter for producing water-soluble adhesives according to claim 1, characterized in that, The moving component includes a moving wheel (102) disposed at the bottom of the frame (1).

8. A filter for producing water-soluble adhesives according to claim 1, characterized in that, A support platform (2) is fixedly connected to the frame (1), and the filter cartridge (3) is fixedly connected to the support platform (2).

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