Purification device for producing formaldehyde-free glue

Abstract

The utility model discloses a kind of purification devices for formaldehyde-free glue production, including base, first purification tank, bottom tank, mounting ring and second purification tank, control box and feed pump are equipped on the base, the filter mechanism for filtering impurities is equipped in the first purification tank, the filter mechanism includes the filter screen cylinder being arranged in the first purification tank, liquid inlet pipe is rotatably connected on the filter screen cylinder, first valve and second valve are respectively equipped on the liquid inlet pipe and filter screen cylinder. The utility model is provided with filter mechanism, can integrate distillation, coarse filter, ultrafiltration process in same device, reduce equipment floor area and pipeline connection, reduce installation cost, and the discharge of coarse impurity is very simple, avoid the reduction of production efficiency caused by frequent disassembly cleaning, to improve the practicality of device.

Description

Technical Field

[0001] This utility model relates to the field of formaldehyde-free adhesive production technology, and in particular to a purification device for formaldehyde-free adhesive production. Background Technology

[0002] In the production of formaldehyde-free adhesives, the purification process is a key step in removing impurities (such as unreacted monomers, mechanical particles, and moisture) from the reaction products, which directly affects the environmental friendliness and performance stability of the adhesive.

[0003] Traditional formaldehyde-free adhesive purification often requires multiple independent filtration devices connected in series, which not only occupies a lot of production space and increases equipment installation and maintenance costs, but also results in low material turnover efficiency and high energy and labor costs due to the multi-stage process. Therefore, developing an integrated, efficient and energy-saving purification device is of great significance for improving the economic and environmental benefits of formaldehyde-free adhesive production. To solve the above problems, we have proposed such a purification device for formaldehyde-free adhesive production. Utility Model Content

[0004] The main objective of this invention is to provide a purification device for the production of formaldehyde-free adhesives, which can effectively solve the problems in the background art.

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

[0006] A purification device for the production of formaldehyde-free adhesive includes a base, a first purification tank, a bottom tank, a mounting ring, and a second purification tank. The base is equipped with a control box and a feed pump. The first purification tank contains a filtration mechanism for filtering impurities. The filtration mechanism includes a filter screen cylinder disposed within the first purification tank. An inlet pipe is rotatably connected to the filter screen cylinder. A first valve and a second valve are respectively provided on the inlet pipe and the filter screen cylinder. The inlet and outlet ends of the feed pump are respectively connected to a drain pipe and a connecting pipe. An exhaust pipe is connected to the first purification tank. A heating jacket is provided on the side wall of the first purification tank. An ultrafiltration membrane is disposed within the mounting ring. The first purification tank is equipped with a drive mechanism for driving the filter screen cylinder to rotate.

[0007] Preferably, the driving mechanism includes a mounting frame fixedly connected to the upper end of the first purification tank, a driving motor is mounted on the top of the mounting frame, and the output shaft of the driving motor and the side wall of the filter cylinder are respectively provided with a first gear and a second gear.

[0008] Preferably, the mounting ring has an annular cross-section, with multiple first bolts passing through the upper end of the mounting ring and multiple second bolts passing through the lower end of the mounting ring, and each of the first and second bolts having two nuts.

[0009] Preferably, the second purification tank has an installation groove on its side wall, and the installation groove has an observation window.

[0010] Preferably, the inner wall of the second purification tank is provided with an inclined surface, and the inner wall of the filter screen cylinder is provided with an inclined surface.

[0011] Preferably, the base has two openings at its lower end, and the drive motor is a servo motor.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This device is equipped with a filtration mechanism, which can integrate distillation, coarse filtration and ultrafiltration processes into the same device, reducing the equipment footprint and pipeline connections, lowering installation costs, and making the discharge of coarse impurities very simple, avoiding the reduction in production efficiency caused by frequent disassembly and cleaning, thereby improving the practicality of the device.

[0014] 2. This device is equipped with a drive mechanism, which can drive the filter cylinder to rotate through a drive motor, so that impurities can quickly pass through the mesh of the filter cylinder under the action of centrifugal force, thereby improving filtration efficiency;

[0015] 3. This device is equipped with an installation ring, which is removable via bolt assembly, facilitating the cleaning and replacement of the ultrafiltration membrane. The inclined structure design ensures that impurities are automatically discharged, reducing manual intervention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the purification device for the production of formaldehyde-free adhesive proposed in this utility model;

[0017] Figure 2 This is a side view of a purification device for the production of formaldehyde-free adhesives according to this utility model;

[0018] Figure 3 This is another side view of a purification device for the production of formaldehyde-free adhesive according to this utility model;

[0019] Figure 4 This is an assembly diagram of the bottom tank, mounting ring, and second purification tank of a purification device for the production of formaldehyde-free adhesives proposed in this utility model.

[0020] In the diagram: 1. Base, 2. First purification tank, 3. Heating jacket, 4. Drain pipe, 5. Control box, 6. Filter screen, 7. Inlet pipe, 8. Bottom tank, 9. Mounting ring, 10. Ultrafiltration membrane, 11. Second purification tank, 12. Connecting pipe, 13. Exhaust pipe, 14. Feed pump, 15. Observation window, 16. Drive motor, 17. Mounting bracket, 18. First valve, 19. Second valve. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1-4 As shown, a purification device for the production of formaldehyde-free adhesive includes a base 1, a first purification tank 2, a bottom tank 8, a mounting ring 9, and a second purification tank 11. The base 1 is equipped with a control box 5 and a feed pump 14. The first purification tank 2 is equipped with a filtration mechanism for filtering impurities. The filtration mechanism includes a filter screen cylinder 6 installed inside the first purification tank 2. An inlet pipe 7 is rotatably connected to the filter screen cylinder 6. A first valve 18 and a second valve 19 are respectively installed on the inlet pipe 7 and the filter screen cylinder 6. The input and output ends of the feed pump 14 are respectively connected to a drain pipe 4 and a connecting pipe 12. A third valve and a pressure gauge are installed on the drain pipe 4. An exhaust pipe 13 is connected to the first purification tank 2. A pressure gauge and a fourth valve are installed on the exhaust pipe 13. A temperature sensor is installed on the first purification tank 2 (not shown in the figure). A heating jacket 3 is installed on the side wall of the first purification tank 2. The heating jacket 3 is existing technology in the industrial production field, so it will not be described in detail. An ultrafiltration membrane 10 is installed inside the mounting ring 9.

[0023] The first purification tank 2 is equipped with a drive mechanism for driving the filter cylinder 6 to rotate. The drive mechanism includes a mounting bracket 17 fixedly connected to the upper end of the first purification tank 2. A drive motor 16 is installed at the top inside the mounting bracket 17. The output shaft of the drive motor 16 and the side wall of the filter cylinder 6 are respectively provided with a first gear and a second gear. The liquid inlet pipe 7 is connected to the filter cylinder 6. The filter cylinder 6 is divided into three parts, with the upper and lower ends extending out of the first purification tank 2 and the middle part located inside the first purification tank 2.

[0024] In this utility model, the mounting ring 9 has an annular cross-section. Multiple first bolts are provided through the upper end of the mounting ring 9, and multiple second bolts are provided through the lower end of the mounting ring 9. Two nuts are provided on each of the first and second bolts. By disassembling the first bolts, second bolts, and nuts, the mounting ring 9 can be removed from between the bottom tank 8 and the second purification tank 11, which facilitates the cleaning of impurities on the ultrafiltration membrane 10.

[0025] In this invention, the second purification tank 11 has an installation groove on its side wall, and an observation window 15 is provided in the installation groove to facilitate observation of the accumulation of impurities on the ultrafiltration membrane 10.

[0026] In this invention, the inner wall of the second purification tank 11 is provided with an inclined surface, and the inner wall of the filter screen cylinder 6 is provided with an inclined surface to facilitate the discharge of materials.

[0027] In this utility model, the lower end of the base 1 has two openings to facilitate the installation of the receiving pipe and waste pipe below the bottom tank 8 and the filter cylinder 6. The drive motor 16 is a servo motor, which can control the centrifugal speed of the filter cylinder 6.

[0028] In the initial state, the liquid inlet pipe 7 is connected to the external feeding equipment, the exhaust pipe 13 is connected to the external steam recovery equipment, and the receiving pipe and waste pipe are installed below the bottom tank 8 and below the filter screen cylinder 6.

[0029] During use, in the distillation preheating stage: the formaldehyde-free adhesive raw material is transported to the first purification tank 2 through the liquid inlet pipe 7, the first valve 18 is closed, and the heating jacket 3 heats the material in the tank, so that the low boiling point solvent (such as ethyl acetate) evaporates and is discharged and recovered through the exhaust pipe 13, while improving the fluidity of the adhesive to optimize the subsequent filtration effect.

[0030] Coarse filtration stage: Drive motor 16 drives the filter cylinder 6 to rotate through the first gear and the second gear. Under the action of centrifugal force, larger particles of impurities (such as packing agglomerates) in the filter cylinder 6 are trapped to the inner wall of the cylinder. The pre-filtered colloid enters the bottom of the first purification tank 2 through the mesh. At this time, the third valve is opened to discharge the material.

[0031] Fine filtration stage: The coarsely filtered adhesive solution flows into the second purification tank 11 through the second connecting pipe 12 via the feed pump 14. It then undergoes fine filtration through the ultrafiltration membrane 10 within the mounting ring 9, retaining high molecular weight polymers while allowing small molecule impurities (such as water and free monomers) to pass through the membrane pores. The observation window 15 allows for real-time monitoring of impurity accumulation on the surface of the ultrafiltration membrane 10, facilitating timely adjustment of filtration parameters.

[0032] Discharge and slag removal stage: The purified formaldehyde-free glue is discharged from the bottom of the second purification tank 11 and enters the subsequent glue preparation process; after filtration, the second valve 19 is opened, and the filter screen 6 discharges the trapped impurities from the bottom opening through the inner wall slope and is collected and treated through the waste pipe.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A purification apparatus for the production of formaldehyde-free adhesive, comprising a base (1), a first purification tank (2), a bottom tank (8), a mounting ring (9), and a second purification tank (11), characterized in that, The base (1) is provided with a control box (5) and a feed pump (14). The first purification tank (2) is provided with a filter mechanism for filtering impurities. The filter mechanism includes a filter screen cylinder (6) set in the first purification tank (2). An inlet pipe (7) is rotatably connected to the filter screen cylinder (6). A first valve (18) and a second valve (19) are respectively provided on the inlet pipe (7) and the filter screen cylinder (6). The inlet end and the outlet end of the feed pump (14) are respectively connected to a drain pipe (4) and a connecting pipe (12). An exhaust pipe (13) is connected to the first purification tank (2). A heating sleeve (3) is provided on the side wall of the first purification tank (2). An ultrafiltration membrane (10) is provided in the mounting ring (9). A drive mechanism for driving the filter screen cylinder (6) to rotate is provided on the first purification tank (2).

2. The purification device for the production of formaldehyde-free adhesive according to claim 1, characterized in that, The drive mechanism includes a mounting bracket (17) fixedly connected to the upper end of the first purification tank (2). A drive motor (16) is installed on the top of the mounting bracket (17). The output shaft of the drive motor (16) and the side wall of the filter cylinder (6) are respectively provided with a first gear and a second gear.

3. The purification device for the production of formaldehyde-free adhesive according to claim 2, characterized in that, The mounting ring (9) has an annular cross-section. Multiple first bolts are provided through the upper end of the mounting ring (9), and multiple second bolts are provided through the lower end of the mounting ring (9). Both the first bolts and the second bolts are provided with two nuts.

4. The purification apparatus for the production of formaldehyde-free adhesive according to claim 3, characterized in that, The second purification tank (11) has an installation groove on its side wall, and an observation window (15) is provided in the installation groove.

5. The purification apparatus for the production of formaldehyde-free adhesive according to claim 4, characterized in that, The inner wall of the second purification tank (11) is provided with an inclined surface, and the inner wall of the filter cylinder (6) is provided with an inclined surface.

6. The purification apparatus for the production of formaldehyde-free adhesive according to claim 2, characterized in that, The base (1) has two openings at its lower end, and the drive motor (16) is a servo motor.

Images