A formaldehyde removal device for impregnating paper using impregnating adhesive.

Abstract

This utility model provides a formaldehyde removal device for impregnating adhesives used in impregnating paper, relating to the field of impregnating paper production technology. It includes an impregnation tank with a top cover, guide rollers on both sides of the tank's interior, impregnating paper connected between the guide rollers, and a mixing and formaldehyde removal assembly inside the tank. This assembly includes a mounting bracket installed on the inner wall of the impregnation tank, a feed pipe on the left side of the tank, and a drive shaft at the bottom of the tank. By setting two sets of feed pipes—one for adding impregnating adhesive and the other for adding a certain formaldehyde decomposition catalyst (such as urea, amino compounds, etc.)—and simultaneously using a servo motor to drive the drive shaft, a mixing rod agitates the impregnating adhesive in the impregnation tank, improving the mixing effect between the added formaldehyde decomposition catalyst and the impregnating adhesive, thereby decomposing and neutralizing the formaldehyde contained in the impregnating adhesive.

Description

Technical Field

[0001] This utility model relates to the field of impregnated paper production technology, and in particular to a formaldehyde removal device for impregnating paper using impregnating adhesive. Background Technology

[0002] Impregnated paper is made from a mixture of non-woven wood pulp, PE, and plant fibers. It has super absorbency and resistance to dissolution. It is also a very economical low-particle-leaking paper towel and is widely used in cabinets, wardrobes, and laminate flooring. However, the impregnating adhesive (such as urea-formaldehyde resin adhesive and phenolic resin adhesive) contains free formaldehyde, which can cause the finished paper to release harmful gases, affecting the indoor environment and human health.

[0003] A search revealed that the document with publication number "CN219793463U" states that "this utility model belongs to the technical field of impregnated paper processing, specifically relating to a formaldehyde removal device for impregnated paper using impregnating adhesive. This formaldehyde removal device has a workbench, with a formaldehyde removal device for impregnated paper on the top and a collection device for winding the impregnated paper on one side." In use, pressing the connecting plate causes the baffle to slide along one side of the movable ring. As the baffle slides, it compresses the connected spring and the movable plate, preventing the baffle from being stuck by the movable ring. When the baffle slides to the other side of the movable ring, pulling the connecting plate causes the baffle to slide along the other side of the movable ring, moving the movable ring towards the fixed disc. This allows the baffle to slide along the other side of the movable ring until the fixed disc disengages from the fixed ring. This structure reduces the time required to disassemble the filter and the workload of the workers to a certain extent.

[0004] However, formaldehyde is produced because of free formaldehyde contained in the impregnating adhesive. Formaldehyde absorption treatment of the finished impregnated paper can only remove the formaldehyde gas generated at that time, and cannot completely remove the formaldehyde on the impregnated paper. Formaldehyde gas will still be generated again during subsequent use, affecting the safety of use.

[0005] Therefore, we provide a formaldehyde removal device for impregnating paper using impregnating adhesive to solve the above problems. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a formaldehyde removal device for impregnating adhesives used in impregnating paper, aiming to solve the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A formaldehyde removal device for impregnating paper includes an impregnation tank with a top cover. Guide rollers are installed on both sides inside the impregnation tank, and impregnated paper is connected between the guide rollers. A mixing formaldehyde removal component is provided inside the impregnation tank, including a mounting bracket installed on the inner wall of the impregnation tank. A feed pipe is installed on the left side of the impregnation tank, and a drive shaft is installed at the bottom inside the impregnation tank. A mixing rod is welded to the top of the drive shaft.

[0009] As a further description of the above technical solution:

[0010] The mounting bracket is connected to a connecting frame by a pin at the top. A separator filter is provided on the inner side of the connecting frame. The separator filter is located at half the height of the immersion tank. The separator filter is made of stainless steel.

[0011] As a further description of the above technical solution:

[0012] The feed pipe is provided in two sets, and the outlet end of the feed pipe is located below the separator filter.

[0013] As a further description of the above technical solution:

[0014] Two sets of mixing rods are symmetrically arranged about the central axis of the impregnation tank, and stirring support rods are uniformly welded to the top of the mixing rods.

[0015] As a further description of the above technical solution:

[0016] The front end of the impregnation tank is equipped with a connecting valve head, and the bottom end of the connecting valve head is welded with an air inlet pipe. The air inlet pipe is attached to the bottom of the impregnation tank, and air holes are opened on the surface of the air inlet pipe.

[0017] As a further description of the above technical solution:

[0018] An air intake port is provided on the lower surface of the top cover, an air intake pipe is installed at the top of the top cover, an adsorption chamber is fixedly connected to the end of the air intake pipe, a fan is installed at the bottom of the adsorption chamber, an adsorption plate is installed inside the adsorption chamber, and activated carbon particles are filled inside the adsorption plate.

[0019] As a further description of the above technical solution:

[0020] The top surface of the top cover is provided with an observation port, which is made of transparent tempered glass.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model, through the arrangement of a feeding pipe, a mixing rod, and a separating filter, uses two sets of feeding pipes. One set is used to add impregnating colloid, while the other set is used to add a certain formaldehyde decomposition catalyst (such as urea, amino compounds, etc.). Simultaneously, a servo motor drives the drive shaft to rotate, thereby causing the mixing rod to agitate the impregnating colloid in the impregnation tank, making the raw materials in the impregnating colloid more evenly mixed. At the same time, it can improve the mixing effect of the formaldehyde decomposition catalyst added to the impregnation tank with the impregnating colloid, thereby decomposing and neutralizing the formaldehyde contained in the impregnating colloid. Furthermore, the separating filter separates the impregnating colloid, preventing impurities or solid particles produced in the impregnating colloid from entering the upper part of the separating filter and adhering to the surface of the impregnated paper, thus affecting the quality of the finished impregnated paper.

[0023] 2. This utility model, through the setting of an air inlet pipe, an air intake port, and an adsorption chamber, connects to an external air pump via a connecting valve head, allowing external gas to enter the impregnation chamber through the air inlet pipe and be evenly discharged through the air holes on the surface of the air inlet pipe. This aeration process accelerates the volatilization of formaldehyde in the impregnation adhesive, thereby reducing the formaldehyde content in the impregnation adhesive and significantly lowering the formaldehyde content on the finished impregnated paper, ensuring safety for subsequent use. The formaldehyde volatilized from the impregnation adhesive is drawn into the adsorption chamber through the air intake port on the lower surface of the top cover via the air intake pipe, and then adsorbed by the activated carbon particles in the adsorption plate, preventing formaldehyde gas from escaping and affecting the surrounding environment and workers, thus ensuring safety during the production of impregnation adhesive. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;

[0025] Figure 2 This is a schematic diagram of the assembly structure of the impregnation box, guide roller, and impregnation paper of this utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the impregnation tank of this utility model;

[0027] Figure 4 This is a schematic diagram of the internal disassembled structure of the impregnation tank of this utility model;

[0028] Figure 5 This is a schematic diagram of the overall rear structure of this utility model;

[0029] Figure 6 This is a bottom view of the top cover of this utility model.

[0030] The following are the labeling elements in the diagram: 1. Impregnation tank; 2. Top cover; 3. Guide roller; 4. Impregnated paper; 5. Mixing formaldehyde removal component; 501. Mounting frame; 502. Feed pipe; 503. Connecting frame; 504. Separating filter; 505. Drive shaft; 506. Mixing rod; 507. Connecting valve head; 508. Air inlet pipe; 509. Air intake port; 510. Air intake pipe; 511. Adsorption chamber; 512. Fan; 513. Adsorption plate; 514. Observation port. Detailed Implementation

[0031] 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.

[0032] Please see Figure 1-6 As shown, this utility model provides a technical solution: a formaldehyde removal device for impregnating paper, including an impregnation tank 1, a top cover 2 installed on the top of the impregnation tank 1, guide rollers 3 installed on both sides inside the impregnation tank 1, impregnating paper 4 connected between the guide rollers 3, a mixing formaldehyde removal component 5 provided inside the impregnation tank 1, the mixing formaldehyde removal component 5 including a mounting bracket 501 installed on the inner wall of the impregnation tank 1, a feed pipe 502 installed on the left side of the impregnation tank 1, a drive shaft 505 installed at the bottom inside the impregnation tank 1, and a mixing rod 506 welded to the top of the drive shaft 505.

[0033] Furthermore, the top pin of the mounting frame 501 is connected to the connecting frame 503. The inner side of the connecting frame 503 is provided with a separating filter screen 504. The separating filter screen 504 is located at half the height of the impregnation tank 1. The separating filter screen 504 is made of stainless steel. The separating filter screen 504 separates the impregnating adhesive to prevent solid particles impurities mixed in the impregnating adhesive or produced from entering the upper side of the separating filter screen 504 and adhering to the surface of the impregnated paper 4, thus affecting the quality of the finished impregnated paper 4.

[0034] Furthermore, two sets of feed pipes 502 are provided. The outlet end of the feed pipes 502 is located below the separator filter 504. By providing two sets of feed pipes 502, one set is used to add impregnating adhesive, while the other set is used to add certain formaldehyde decomposition catalysts such as urea and amino compounds, so that the two react in the impregnation tank 1, thereby reducing the formaldehyde contained in the impregnating adhesive and improving the safety of using the impregnated paper 4.

[0035] Furthermore, two sets of mixing rods 506 are symmetrically arranged about the central axis of the impregnation tank 1. Stirring support rods are uniformly welded to the top of the mixing rods 506. The impregnation adhesive is injected into the impregnation tank 1 through the feed pipe 502. Then, the impregnation paper 4 is passed around the guide roller 3 and passes through the interior of the impregnation tank 1. During the impregnation process, the drive shaft 505 is rotated by the servo motor, so that the mixing rods 506 agitate the impregnation adhesive in the impregnation tank 1, making the raw materials in the impregnation adhesive more uniformly mixed and improving the impregnation effect. At the same time, it can improve the mixing effect of the formaldehyde decomposition catalyst added to the impregnation tank 1 with the impregnation adhesive, thereby decomposing and neutralizing the formaldehyde contained in the impregnation adhesive.

[0036] Furthermore, a connecting valve head 507 is installed at the front end of the impregnation tank 1, and an air inlet pipe 508 is welded to the bottom end of the connecting valve head 507. The air inlet pipe 508 is attached to the bottom of the impregnation tank 1, and air holes are opened on the surface of the air inlet pipe 508. An external air pump is connected through the connecting valve head 507, so that external gas enters the impregnation tank 1 through the air inlet pipe 508 and is evenly discharged through the air holes on the surface of the air inlet pipe 508, thereby aerating the impregnating adhesive in the impregnation tank 1, accelerating the volatilization of formaldehyde in the impregnating adhesive, and improving the impregnation effect of the impregnated paper 4.

[0037] Furthermore, an air intake 509 is provided on the lower surface of the top cover 2, and an air intake pipe 510 is installed on the top of the top cover 2. An adsorption chamber 511 is fixedly connected to the end of the air intake pipe 510. A fan 512 is installed at the bottom of the adsorption chamber 511. An adsorption plate 513 is installed inside the adsorption chamber 511, and the adsorption plate 513 is filled with activated carbon particles. During impregnation, the formaldehyde volatilized from the impregnating adhesive is drawn into the adsorption chamber 511 through the air intake 509 on the lower surface of the top cover 2 by the air intake pipe 510. The formaldehyde is then adsorbed by the activated carbon particles in the adsorption plate 513, preventing the formaldehyde gas from escaping and affecting the surrounding environment and workers, thus ensuring the safety of the impregnating adhesive production.

[0038] Furthermore, the upper surface of the top cover 2 is provided with an observation port 514, which is made of transparent tempered glass. Through the observation port 514, the impregnation status of the impregnated paper 4 in the impregnation tank 1 and the reaction of the impregnating adhesive can be observed in real time, which makes it convenient for staff to adjust or maintain the equipment in a timely manner, and ensure the impregnation effect and formaldehyde removal effect of the impregnated paper 4.

[0039] Working Principle: The device is installed in its working position and powered by an external power source. Then, impregnating adhesive is injected into the impregnation tank 1 through one set of feed pipes 502, and formaldehyde decomposition catalyst is injected through another set of feed pipes 502, allowing the two to react within the impregnation tank 1. Subsequently, the impregnated paper 4 is passed around the guide roller 3 and through the impregnation tank 1. During the impregnation process, the servo motor is activated to drive the drive shaft 505 to rotate, and the mixing rod 506 agitates the impregnating adhesive in the impregnation tank 1, making the raw materials in the impregnating adhesive more uniform and improving the impregnation effect. Simultaneously, the mixing effect between the formaldehyde decomposition catalyst and the impregnating adhesive is improved. At the same time, the external air pump connected to the valve head 507 is turned on. External gas enters the impregnation chamber 1 through the connecting valve head 507 and the air inlet pipe 508, aerating the impregnating adhesive in the impregnation chamber 1 and accelerating the volatilization of formaldehyde in the impregnating adhesive. The formaldehyde volatilized from the impregnating adhesive is drawn into the adsorption chamber 511 through the air intake 509 on the lower surface of the top cover 2 by the air intake pipe 510, and then adsorbed by the activated carbon particles in the adsorption plate 513. During the impregnation process, the staff can observe the impregnation status of the impregnated paper 4 in the impregnation chamber 1 and the reaction of the impregnating adhesive in real time through the observation port 514, so as to adjust or maintain the equipment in a timely manner. This completes the use process of a formaldehyde removal device for impregnating paper.

[0040] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A de-aldehyde apparatus for impregnation size for impregnated paper, comprising an impregnation tank (1), characterized in that: The top of the impregnation tank (1) is equipped with a top cover (2), and guide rollers (3) are installed on both sides inside the impregnation tank (1). Impregnated paper (4) is connected between the guide rollers (3). A mixing formaldehyde removal assembly (5) is provided inside the impregnation tank (1). The mixing formaldehyde removal assembly (5) includes a mounting bracket (501) installed on the inner wall of the impregnation tank (1). A feed pipe (502) is installed on the left side of the impregnation tank (1). A drive shaft (505) is installed at the bottom inside the impregnation tank (1). A mixing rod (506) is welded to the top of the drive shaft (505).

2. The aldehyde removal apparatus for impregnating adhesive of impregnated paper according to claim 1, wherein The top pin of the mounting bracket (501) is connected to the connecting bracket (503), and the inner side of the connecting bracket (503) is provided with a separator filter (504). The separator filter (504) is located at half the height of the immersion tank (1), and the separator filter (504) is made of stainless steel.

3. The aldehyde removal apparatus for impregnated gum of impregnated paper according to claim 1, wherein The feed pipe (502) is provided in two sets, and the outlet end of the feed pipe (502) is located below the separator filter (504).

4. The aldehyde removal apparatus for the impregnated gum of the impregnated paper according to claim 1, wherein Two sets of mixing rods (506) are symmetrically arranged about the central axis of the impregnation tank (1), and stirring support rods are uniformly welded to the top of the mixing rods (506).

5. The aldehyde removal apparatus for impregnated gum of impregnated paper according to claim 1, wherein The front end of the impregnation tank (1) is equipped with a connecting valve head (507), and the bottom end of the connecting valve head (507) is welded with an air inlet pipe (508). The air inlet pipe (508) is attached to the bottom of the impregnation tank (1), and air holes are opened on the surface of the air inlet pipe (508).

6. The formaldehyde removal equipment for impregnating paper adhesive according to claim 1, characterized in that, The lower surface of the top cover (2) is provided with an air intake (509). An air intake pipe (510) is installed at the top of the top cover (2). An adsorption chamber (511) is fixedly connected to the end of the air intake pipe (510). A fan (512) is installed at the bottom of the adsorption chamber (511). An adsorption plate (513) is installed inside the adsorption chamber (511). The adsorption plate (513) is filled with activated carbon particles.

7. The aldehyde removal apparatus for impregnated gum of impregnated paper according to claim 1, wherein The top cover (2) has an observation port (514) on its upper surface, and the observation port (514) is made of transparent tempered glass.

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