AB material multi-layer filling valve for foaming glue production

Abstract

The utility model discloses a kind of AB material multilayer filling valve for foaming glue production, including valve body, the hollow structure is inside the valve body, and inside center place integrally is provided with baffle, the material cavity is uniformly provided with in the valve body inside located baffle both sides, the sidewall of the material cavity of the valve body is connected with inlet hose in both sides, the valve body bottom end is equipped with discharge port, the valve plate is installed in the valve body inside located baffle terminal end, the transmission shaft is integrally connected in the valve plate top end, the valve plate is rotatably connected between transmission shaft and valve body, the valve body inside located material cavity bottom end is provided with seal, the seal and valve plate are adapted, the transmission shaft one end is installed with step motor, the utility model integrates the filling channel of A material, B material in same valve body, replaces traditional multiple filling valve discrete setting mode by single valve double-chamber structure, without through conveying equipment shift package jar to realize material switching, greatly simplify the layout structure of filling production line.

Description

Technical Field

[0001] This utility model belongs to the technical field of foam production equipment, specifically relating to a multi-layer filling valve for AB materials used in foam production. Background Technology

[0002] In the production process of expanded polyurethane foam, the core raw materials are usually polyurethane foam components A and B. Because these two chemical raw materials have high reactivity once they come into contact and will quickly undergo a foaming reaction, the traditional filling process requires filling the two materials into the same container in sequence, sealing the container, and then shaking it to mix them.

[0003] In the filling process, existing technologies generally use a single filling valve for the filling operation. This type of filling valve usually has only one independent material flow channel, which means that it can only complete the filling of one type of material (material A or material B) at a time. When filling two-component materials (A and B), after material A is filled, the packaging can needs to be transferred to another independent material B filling valve via a bottom conveyor device before material B is filled. This operation method, which relies on multiple filling valves and requires equipment to be switched, has obvious drawbacks: First, it makes the filling production line layout complex and occupies a lot of space, and the switching operation severely restricts the filling efficiency; second, and more importantly, this method can only form a simple upper and lower double-layer structure inside the packaging can, and the contact area between material A and material B is limited, which makes the subsequent shaking and mixing process time-consuming, which not only reduces production efficiency but also increases energy consumption.

[0004] Therefore, in view of the above-mentioned technical problems, this utility model proposes a multi-layer filling valve for AB materials in the production of foamed adhesive, which can realize the alternating multi-layer filling of AB materials, increase the contact area between A material and B material, reduce the time spent on shaking and mixing, and at the same time occupy little space, facilitate layout, and improve filling efficiency. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer filling valve for AB material in the production of foamed adhesive, comprising a valve body, wherein the valve body has a hollow internal structure and a partition is integrally provided at the center of the internal structure; material chambers are provided on both sides of the partition inside the valve body; feeding hoses are connected to the side walls of the material chambers on both sides of the valve body; a discharge port is provided at the bottom of the valve body; a valve plate is installed at the end of the partition inside the valve body; a drive shaft is integrally connected to the top of the valve plate; the valve plate is rotatably connected to the valve body through the drive shaft; a sealing opening is provided at the bottom of the material chamber inside the valve body, the sealing opening is adapted to the valve plate; a stepper motor is installed at one end of the drive shaft, and the stepper motor body is fixed to the outer wall of the valve body.

[0006] As a preferred technical solution of this utility model, the valve plate is attached to both sides of the inner wall of the valve body, and sealing strips are fixed on both sides of the valve plate.

[0007] As a preferred embodiment of this utility model, the inner wall of the valve body and the outer surface of the valve plate are coated with an anti-stick coating, and the anti-stick coating material is polytetrafluoroethylene.

[0008] As a preferred embodiment of this utility model, a feed pump is installed on the feed hose body, and a feed valve is installed at the connection between the feed hose and the valve body.

[0009] As a preferred embodiment of this utility model, a sealing gasket is fixed at the sealing point of the valve body.

[0010] As a preferred embodiment of this utility model, a detachable fixing bracket is installed on the outside of the valve body.

[0011] As a preferred embodiment of this utility model, a detachable top cover is installed on the top of the valve body.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) This utility model integrates the filling channels of material A and material B into the same valve body. By replacing the traditional multi-filling valve separate setting mode with a single valve double chamber structure, the material switching can be achieved without transferring the packaging tank through the conveying equipment. This greatly simplifies the layout structure of the filling production line, reduces the space occupied by the equipment, and reduces the construction cost and site requirements of the production line.

[0014] (2) This utility model uses a stepper motor to drive the valve plate to alternately change direction, so as to realize the "multi-layer alternating stacking" of material A and material B in the packaging can. Compared with the "double-layer" structure of the traditional process, it significantly increases the contact area between material A and material B (the contact interface changes from a single plane to a multi-layer interlaced interface). In the subsequent shaking and mixing process, the two materials can quickly diffuse and merge, which greatly shortens the mixing time, improves the overall production efficiency, and reduces the energy consumption during the shaking process, thus reducing the production cost.

[0015] (3) The valve plate adopts an interference fit sealing strip design on both sides. The pre-tightening force achieves elastic contact with the inner wall of the valve body, forming an elastic scraper structure. This not only ensures the sealing of one side of the chamber during a single filling, but also scrapes off the residual material on the inner wall. Combined with the sealing gasket at the sealing point and the polytetrafluoroethylene anti-stick coating on the inner wall of the valve body, the contact channel between material A and material B in the valve body is blocked from the structure. This effectively avoids the two materials from foaming prematurely, ensuring the continuity of filling operations and the stability of product quality. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the valve body in this utility model;

[0019] In the diagram: 1. Valve body; 2. Baffle plate; 3. Material chamber; 4. Feed hose; 5. Discharge port; 6. Valve plate; 7. Drive shaft; 8. Top cover; 9. Sealing end; 10. Stepper motor; 11. Feed pump; 12. Feed valve; 13. Sealing gasket; 14. Fixing frame; 15. Sealing strip. Detailed Implementation

[0020] 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.

[0021] Example

[0022] Please see Figure 1-2 This utility model provides the following technical solution: a multi-layer filling valve for AB material in the production of foamed adhesive, including a valve body 1, the valve body 1 having a hollow internal structure and an integrally formed partition 2 at the center of the internal structure, material chambers 3 on both sides of the partition 2 inside the valve body 1, a feed hose 4 connected to the side wall of the material chambers 3 on both sides of the valve body 1, a discharge port 5 at the bottom of the valve body 1, a valve plate 6 installed at the end of the partition 2 inside the valve body 1, a drive shaft 7 integrally connected to the top of the valve plate 6, the valve plate 6 being rotatably connected to the valve body 1 through the drive shaft 7, a sealing opening 9 at the bottom of the material chamber 3 inside the valve body 1, the sealing opening 9 being adapted to the valve plate 6, a stepper motor 10 installed at one end of the drive shaft 7, the stepper motor 10 being fixed to the outer wall of the valve body 1.

[0023] To prevent polyurethane foaming materials A and B from adhering and remaining inside the valve body 1 and on the surface of the valve plate 6, and to avoid premature contact between the two materials to cause a foaming reaction, while also reducing the difficulty of cleaning the inside of the valve body 1 after filling, in this embodiment, as a preferred technical solution of the present invention, the inner wall of the valve body 1 and the outer surface of the valve plate 6 are coated with an anti-stick coating, and the anti-stick coating material is polytetrafluoroethylene.

[0024] In order to achieve precise quantitative delivery and pressure control of material A and material B to the corresponding material chamber 3, and to realize on-demand on-demand material delivery, in this embodiment, as a preferred technical solution of the present invention, a material pump 11 is installed on the body of the feed hose 4, and a feed valve 12 is installed at the connection between the feed hose 4 and the valve body 1.

[0025] In order to enhance the sealing fit between the valve plate 6 and the sealing opening 9 and prevent the material in the other side of the material chamber 3 from leaking through the gap of the sealing opening 9 during single-sided filling, in this embodiment, as a preferred technical solution of the present invention, a sealing gasket 13 is fixed at the sealing opening 9 of the valve body 1.

[0026] In order to achieve stable installation and positioning of valve body 1 on the filling production line and improve the installation flexibility and maintenance convenience of the equipment, in this embodiment, as a preferred technical solution of the present invention, a detachable fixing frame 14 is installed on the outside of valve body 1.

[0027] In order to facilitate the inspection, cleaning or replacement of the core components inside the valve body 1, ensure the maintainability of the internal structure of the valve body 1 and extend the service life of the equipment, in this embodiment, as a preferred technical solution of the present invention, a detachable top cover 8 is installed on the top of the valve body 1.

[0028] The multi-layer filling valve for AB materials used in the production of foam adhesives described in this utility model has the following specific working process:

[0029] Equipment initialization and material preparation: First, fix the valve body 1 to the preset position of the filling production line using the detachable fixing bracket 14 to ensure that the valve body 1 is installed firmly; open the detachable top cover 8 to clean and inspect the inside of the valve body 1 and then close it to ensure that there are no impurities left inside the material chamber 3; connect the storage tanks corresponding to polyurethane foam A and B materials to the material chambers 3 on both sides of the valve body 1 through two sets of feed hoses 4 respectively. The feed valve 12 on the feed hose 4 is initially closed, and the feed pump 11 is in standby mode; at the same time, confirm that the polytetrafluoroethylene anti-stick coating on the inner wall of the valve body 1 is undamaged, the sealing gasket 13 at the seal 9 is tightly fitted, and the sealing strips 15 on both sides of the valve plate 6 are in a pre-tight fit (achieving elastic contact with the inner wall of the valve body 1 through interference fit).

[0030] Valve plate 6 reversing filling: When the packaging can is moved to the discharge port 5 directly below by the conveying equipment, the stepper motor 10 is started. The stepper motor 10 drives the valve plate 6 to swing precisely along the central axis inside the valve body 1 through the transmission shaft 7 (the swing angle is preset by the control system to ensure that only the sealing 9 of one side of the material chamber 3 is opened at a time).

[0031] Material conveying and chamber filling: When the valve plate 6 swings towards the material chamber 3 on the B side, the surface of one side of the valve plate 6 tightly adheres to the sealing gasket 13 at the sealing opening 9, thereby achieving the sealing and closure of the material chamber 3 on the B side.

[0032] Meanwhile, the other side of the valve plate 6 forms an A material guide channel with the valve body 1. The A material end feed valve 12 is opened, and the corresponding feed pump 11 is started. Under the pressure of the feed pump 11, the A material is transported to the A material cavity 3 of the valve body 1 through the corresponding feed hose 4. Under its own gravity and pre-filling pressure, the A material in the A material cavity 3 falls precisely into the packaging can through the seal 9 and the discharge port 5, completing a single A material filling. The filling amount is controlled by the preset working time of the feed pump 11 by the control system. The process can be monitored through the observation window of the valve body 1. After that, the A material end feed valve 12 is closed, and the A material end feed pump 11 stops feeding.

[0033] After a single filling of material A is completed, the stepper motor 10 drives the valve plate 6 to swing in the opposite direction. The valve plate 6 deflects towards the material A side cavity 3, and the sealing strips 15 on both sides of the valve plate 6 adhere to the inner wall of the valve body 1 to form an elastic scraper, which collects the remaining material on both sides of the inner wall of the valve body 1 into the sealing opening 9 on the material A side, thus sealing the material A cavity 3. At the same time, the sealing opening 9 on the material B side opens, and the material B in the material B cavity 3 falls into the packaging can through the discharge port 5, covering the surface of the previous layer of material A, thus completing a single filling of material B.

[0034] Repeat the valve plate 6 reversing action described above. The stepper motor 10 drives the valve plate 6 to alternately open the seals 9 of material A chamber 3 and material B chamber 3 at a preset frequency, so as to realize the alternating layered accumulation of material A and material B in the packaging can in "small amount and multiple times" until the preset total filling amount is reached.

[0035] Cleaning and Resetting after Filling: Since the inner wall of valve body 1 is coated with polytetrafluoroethylene non-stick coating, material residues can be avoided from adhering. At the same time, during the swinging process of valve plate 6, the sealing strips 15 on both sides form an elastic scraping blade structure. When swinging against the inner wall of valve body 1, a small amount of residual material attached to the inner wall can be scraped off, preventing material A and material B from reacting with each other on the inner wall of valve body 1. After filling is completed, the packaging can is transferred to the subsequent sealing process through the conveying equipment, and valve body 1 returns to its initial state, waiting for the next filling cycle.

[0036] Finally, it should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-layer filling valve for AB material in the production of foamed adhesive, comprising a valve body (1), characterized in that: The valve body (1) has a hollow structure inside, and a partition (2) is integrally set in the center of the interior. Material chambers (3) are set on both sides of the partition (2) inside the valve body (1). Feed hoses (4) are connected to the side walls of the material chambers (3) on both sides of the valve body (1). A discharge port (5) is opened at the bottom of the valve body (1). A valve plate (6) is installed at the end of the partition (2) inside the valve body (1). A drive shaft (7) is integrally connected to the top of the valve plate (6). The valve plate (6) is rotatably connected to the valve body (1) through the drive shaft (7). A seal (9) is set at the bottom of the material chamber (3) inside the valve body (1). The seal (9) is compatible with the valve plate (6). A stepper motor (10) is installed at one end of the drive shaft (7). The body of the stepper motor (10) is fixed to the outer wall of the valve body (1).

2. The multi-layer filling valve for AB material in the production of foamed adhesive according to claim 1, characterized in that: The valve plate (6) is attached to both sides of the inner wall of the valve body (1), and sealing strips (15) are fixed on both sides of the valve plate (6).

3. A multi-layer filling valve for AB material in the production of foamed adhesive according to claim 2, characterized in that: The inner wall of the valve body (1) and the outer surface of the valve plate (6) are coated with an anti-stick coating, which is made of polytetrafluoroethylene.

4. The multi-layer filling valve for AB material in the production of foamed adhesive according to claim 1, characterized in that: The feed hose (4) is equipped with a feed pump (11), and a feed valve (12) is installed at the connection between the feed hose (4) and the valve body (1).

5. A multi-layer filling valve for AB material in the production of foamed adhesive according to claim 1, characterized in that: The valve body (1) is fixed with a sealing gasket (13) at the seal (9).

6. A multi-layer filling valve for AB material in the production of foamed adhesive according to claim 1, characterized in that: A detachable mounting bracket (14) is installed on the outside of the valve body (1).

7. A multi-layer filling valve for AB material in the production of foamed adhesive according to claim 1, characterized in that: The valve body (1) is equipped with a detachable top cover (8).

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