Reaction kettle for polyurethane adhesive

Abstract

The utility model discloses a reaction kettle for polyurethane glue, which comprises a reaction kettle body, and a discharging mechanism is arranged below the reaction kettle body; the discharging mechanism comprises a transversely arranged piston cylinder, the front end of the piston cylinder is provided with a discharging pipe communicated with an inner cavity of the piston cylinder, the discharging pipe is internally provided with a first one-way valve only allowing discharging from the piston cylinder, and the top of the front end of the piston cylinder is provided with a feeding pipe communicating the inner cavity of the piston cylinder with the discharging port of the reaction kettle body; a second one-way valve only allowing feeding into the piston cylinder is arranged in the feeding pipe; a piston body is connected into the piston barrel in a sliding and sealing mode, a supporting arm extending out of the piston barrel is arranged at the rear end of the piston body, and the discharging mechanism further comprises a reciprocating driving mechanism used for driving the supporting arm. According to the utility model, the piston body reciprocates to continuously suck polyurethane glue into the piston cylinder and continuously discharge the polyurethane glue in an extrusion discharge manner, so that the discharge speed of the reaction kettle is increased, and the discharge efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane adhesive technology, specifically a reaction vessel for polyurethane adhesives. Background Technology

[0002] Polyurethane adhesive requires stirring and mixing in a reactor during preparation. After mixing, it is discharged from the bottom of the reactor through the discharge pipe. Due to the viscosity and poor flowability of polyurethane adhesive, the feeding speed is slow and the discharge time is long. Therefore, the inventors designed a reactor suitable for rapid discharge of polyurethane adhesive. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a polyurethane adhesive reaction vessel. During the discharge process, the reciprocating motion of the piston continuously draws polyurethane adhesive into the piston cylinder and discharges it through extrusion, thereby increasing the discharge speed of the reaction vessel, effectively shortening the discharge time, and improving the discharge efficiency.

[0004] The technical solution of this utility model is: a reaction vessel for polyurethane adhesive, including a reaction vessel body, a support at the bottom of the reaction vessel body, a stirring device extending into the inner cavity of the reaction vessel body at the top, a discharge port at the bottom of the reaction vessel body, and a discharge mechanism below the discharge port;

[0005] The discharge mechanism includes a horizontally arranged piston cylinder. The front end of the piston cylinder is provided with a discharge pipe that communicates with the inner cavity of the piston cylinder. The discharge pipe is provided with a first one-way valve that only allows discharge from the piston cylinder. The top of the front end of the piston cylinder is provided with a feed pipe that connects the inner cavity of the piston cylinder and the discharge port of the reactor body. The feed pipe is provided with a second one-way valve that only allows feed into the piston cylinder.

[0006] A piston body is slidably and sealed inside the piston cylinder, and a support arm extending from the piston cylinder is provided at the rear end of the piston body. The discharge mechanism also includes a reciprocating drive mechanism for driving the support arm.

[0007] Preferably, the first one-way valve includes a first mesh plate coaxially fixedly installed inside the discharge pipe. The first mesh plate has a through hole at its center and a first guide rod is slidably connected to the through hole. The front end of the first guide rod has a first limiting platform and the rear end has a first baffle for blocking the first mesh plate. A support spring is provided between the first baffle and the first mesh plate, and the first baffle has a groove for accommodating the support spring.

[0008] Preferably, the second check valve includes a second mesh plate coaxially fixedly installed inside the feed pipe, a second guide rod extending downward is connected to the bottom of the second mesh plate, a second baffle for blocking the second mesh plate is slidably connected on the second guide rod, and a second limiting platform for limiting the second baffle is provided at the bottom of the second guide rod.

[0009] Preferably, the inner wall of the reactor body is provided with an annular coil, the bottom of the coil is provided with a set of downward-facing air outlets, and the coil is also provided with an air inlet pipe extending out of the reactor body.

[0010] Preferably, the coils are a group of vertically spaced coils.

[0011] Compared with the prior art, this utility model has the following advantages: This utility model continuously draws polyurethane adhesive into the piston cylinder through the reciprocating motion of the piston body, and continuously squeezes out the polyurethane adhesive through the reciprocating motion of the piston body, thereby increasing the discharge speed of the reactor, effectively shortening the discharge time, and improving the discharge efficiency.

[0012] Compressed air is injected into the reactor body through a coil installed inside the reactor body. This increases the pressure inside the reactor body, thereby increasing the discharge speed of the polyurethane adhesive. On the other hand, air is blown through the downward-arranged air outlets to accelerate the flow of some of the polyurethane adhesive adhering to the inner wall of the reactor body, thus solving the problem of polyurethane adhesive sticking to the wall. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the material discharge mechanism;

[0015] Figure 3 This is a schematic diagram of the internal component structure of the piston cylinder;

[0016] Figure 4 This is a schematic diagram of the structure of the first check valve;

[0017] Figure 5 This is a schematic diagram of the second check valve;

[0018] Figure 6 This is a schematic diagram of the internal cavity structure of the reactor body;

[0019] In the diagram: 1. Stirring device, 2. Reactor body, 3. Support, 4. Discharge mechanism, 5. Air inlet pipe, 6. Reciprocating drive mechanism, 7. First check valve, 8. Second check valve, 9. Discharge pipe, 10. Feed pipe, 11. Piston cylinder, 12. Support arm, 13. Piston body, 14. First limiting platform, 15. First grid plate, 16. First guide rod, 17. Support spring, 18. First baffle, 19. Groove, 20. Second grid plate, 21. Second guide rod, 22. Second baffle, 23. Second limiting platform, 24. Coil. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0021] like Figures 1 to 3 A reaction vessel for polyurethane adhesive includes a reaction vessel body 2, a support 3 at the bottom of the reaction vessel body 2, and a stirring device 1 extending into the inner cavity of the reaction vessel body 2 at the top.

[0022] The reactor body 2 has a discharge port at the bottom and a discharge mechanism 4 below the discharge port. The discharge mechanism 4 includes a horizontally arranged piston cylinder 11. The front end of the piston cylinder 11 is provided with a discharge pipe 9 that communicates with the inner cavity of the piston cylinder 11. The discharge pipe 9 is provided with a first one-way valve 7 that only allows material to be discharged from the piston cylinder 11.

[0023] The piston cylinder 11 is provided with a feed pipe 10 at the top front end, which connects the inner cavity of the piston cylinder 11 and the discharge port of the reactor body 2. The feed pipe 10 is provided with a second one-way valve 8 that only allows feed into the piston cylinder 11.

[0024] A piston body 13 is slidably and sealed inside the piston cylinder 11. A support arm 12 extending from the piston cylinder 11 is provided at the rear end of the piston body 13. The discharge mechanism 4 also includes a reciprocating drive mechanism 6 for driving the support arm 12.

[0025] Working principle:

[0026] During feeding, the piston body 13 reciprocates. When the piston body 13 moves backward, the first one-way valve 7 closes and the second one-way valve 8 opens. At this time, as the piston body 13 moves, polyurethane adhesive is drawn into the piston cylinder 11.

[0027] When the piston body 13 moves forward, the first one-way valve 7 opens and the second one-way valve 8 closes. At this time, as the piston body 13 moves, the polyurethane adhesive in the piston cylinder 11 is squeezed out by the discharge pipe 9.

[0028] The reciprocating motion of the piston cylinder 11 enables suction and extrusion, thereby increasing the discharge speed of the reactor, effectively shortening the discharge time, and improving the discharge efficiency. Example 2

[0029] This embodiment optimizes the structure of the first one-way valve 7 and the second one-way valve 8 based on the above embodiment. Specifically:

[0030] like Figure 4 The first one-way valve 7 includes a first mesh plate 15 coaxially fixedly installed in the discharge pipe 9. The first mesh plate 15 has a through hole at its center and a first guide rod 16 is slidably connected to the through hole. The front end of the first guide rod 16 has a first limiting platform 14 and the rear end has a first baffle 18 for blocking the first mesh plate 15. A support spring 17 is provided between the first baffle 18 and the first mesh plate 15, and the first baffle 18 has a groove 19 for accommodating the support spring 17.

[0031] like Figure 5 The second one-way valve 8 includes a second mesh plate 20 coaxially fixedly installed in the feed pipe 10. The bottom of the second mesh plate 20 is connected to a downwardly extending second guide rod 21. A second baffle 22 for blocking the second mesh plate 20 is slidably connected on the second guide rod 21, and a second limiting platform 23 for limiting the second baffle 22 is provided at the bottom of the second guide rod 21. Example 3

[0032] This embodiment is an optimization based on the above embodiment, specifically:

[0033] like Figure 1 and Figure 6 The inner wall of the reactor body 2 is provided with an annular coil 24. The bottom of the coil 24 is provided with a set of downward-facing air outlets. The coil 24 is also provided with an air inlet pipe 5 extending out of the reactor body 2. The coil 24 is a set of vertically spaced coils.

[0034] Compressed air is injected into the cavity through the coil 24 set in the inner cavity of the reactor body 2, thereby increasing the pressure inside the reactor body 2 and thus increasing the discharge speed of polyurethane adhesive.

[0035] On the other hand, by blowing air through the downward-arranged air outlets, some of the polyurethane adhesive adhering to the inner wall of the reactor body 2 is accelerated to flow down, thus solving the problem of polyurethane adhesive sticking to the wall.

[0036] This utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model, and the changed content still falls within the protection scope of this utility model.

Claims

1. A reaction vessel for polyurethane adhesive, comprising a reaction vessel body, wherein a support is provided at the bottom of the reaction vessel body and a stirring device extending into the inner cavity of the reaction vessel body is provided at the top, characterized in that: The bottom of the reactor body is provided with a discharge port, and a discharge mechanism is provided below the discharge port; The discharge mechanism includes a horizontally arranged piston cylinder. The front end of the piston cylinder is provided with a discharge pipe that communicates with the inner cavity of the piston cylinder. The discharge pipe is provided with a first one-way valve that only allows discharge from the piston cylinder. The top of the front end of the piston cylinder is provided with a feed pipe that connects the inner cavity of the piston cylinder and the discharge port of the reactor body. The feed pipe is provided with a second one-way valve that only allows feed into the piston cylinder. A piston body is slidably and sealed inside the piston cylinder, and a support arm extending from the piston cylinder is provided at the rear end of the piston body. The discharge mechanism also includes a reciprocating drive mechanism for driving the support arm.

2. The reaction vessel for polyurethane adhesive according to claim 1, characterized in that: The first one-way valve includes a first mesh plate coaxially fixedly installed inside the discharge pipe. The first mesh plate has a through hole at its center and a first guide rod is slidably connected to the through hole. The front end of the first guide rod has a first limiting platform and the rear end has a first baffle for blocking the first mesh plate. A support spring is provided between the first baffle and the first mesh plate, and the first baffle has a groove for accommodating the support spring.

3. The reaction vessel for polyurethane adhesive according to claim 1, characterized in that: The second check valve includes a second mesh plate coaxially fixedly installed inside the feed pipe. The bottom of the second mesh plate is connected to a downwardly extending second guide rod. A second baffle for blocking the second mesh plate is slidably connected on the second guide rod. The bottom of the second guide rod is provided with a second limiting platform for limiting the second baffle.

4. The reaction vessel for polyurethane adhesive according to claim 1, characterized in that: The inner wall of the reactor body is provided with an annular coil, and a set of downward-facing air outlets are opened at the bottom of the coil. The coil is also provided with an air inlet pipe extending out of the reactor body.

5. The reaction vessel for polyurethane adhesive according to claim 4, characterized in that: The coils are arranged in a vertically spaced group.

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