Zero-formaldehyde surface adhesive preparation system

Abstract

The utility model discloses a zero-formaldehyde surface glue binder glue making system which comprises jacketed reaction kettles, medium circulating pipelines and glue outlet pipelines are arranged on the jacketed reaction kettles, feed ports of the jacketed reaction kettles are communicated with all stock bins through feeding pipes, the tops of all the jacketed reaction kettles are communicated with negative pressure pipelines, and the negative pressure pipelines are communicated with all the stock bins. The feeding pipe is connected with an air inlet and a water adding pipeline, a buffer tank is arranged on the negative pressure pipeline, and a negative pressure pump is assembled at the tail end of the negative pressure pipeline. According to the zero-formaldehyde surface adhesive preparation system, raw material dust is recycled through negative pressure, is recycled through water circulation and is added into a production line for use, meanwhile, materials are fed into the jacket reaction kettle through negative pressure and water transportation, feeding points are centralized and unified to one place, management is facilitated, and meanwhile dust leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of glue-making equipment, in particular to a zero-formaldehyde surface glue binder glue-making system. Background Technique

[0002] Polyvinyl alcohol is an organic compound, with an appearance of white flakes, flocs or powdery solids, odorless, soluble in water (above 95 °C), slightly soluble in dimethyl sulfoxide, insoluble in gasoline, kerosene, vegetable oil, benzene, toluene, dichloroethane, carbon tetrachloride, acetone, ethyl acetate, methanol, ethylene glycol, etc. Polyvinyl alcohol is an important chemical raw material, used in the manufacture of polyvinyl acetal, gasoline-resistant pipelines and vinylon, fabric treatment agents, emulsifiers, paper coatings, adhesives, glues, etc.

[0003] During the process of making the zero-formaldehyde surface glue binder, polyvinyl alcohol needs to be put into the jacketed reactor. During the feeding process of the white flaky, flocculent or powdery solid polyvinyl alcohol, dust is generated, which affects the workshop environment and causes waste. According to the preliminary list of carcinogens published by the International Agency for Research on Cancer of the World Health Organization, polyvinyl alcohol is in the list of Group 3 carcinogens. Therefore, the emission of polyvinyl alcohol is dangerous. Therefore, technical optimization is carried out on the feeding of polyvinyl alcohol in the zero-formaldehyde surface glue binder glue-making system. Content of the Utility Model

[0004] The purpose of the utility model is to provide a zero-formaldehyde surface glue binder glue-making system to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A zero-formaldehyde surface glue binder glue-making system includes a jacketed reactor, on which a medium circulation pipeline and a glue outlet pipeline are arranged. The feeding port of the jacketed reactor is communicated with each bin through a feeding pipe, and the top of each jacketed reactor is communicated with a negative pressure pipeline. An air inlet and a water adding pipeline are connected to the feeding pipe.

[0007] As a further scheme of the utility model: a buffer tank is arranged on the negative pressure pipeline, and a negative pressure pump is assembled at the end of the negative pressure pipeline.

[0008] As a further scheme of the utility model: a dust suction hood is arranged on the bin, the dust suction hood is communicated with a dust suction pipeline, the negative pressure pipeline is communicated with a recovery pipeline, and a recovery tank is arranged between the recovery pipeline and the dust suction pipeline.

[0009] As a further scheme of the utility model: the recovery tank is communicated with the water adding pipeline, the bottom of the recovery tank is communicated with the feeding pipe through a return water pipeline, a distributor is arranged inside the recovery tank, the dust suction pipeline is communicated with the distributor, and the top of the recovery tank is communicated with the recovery pipeline.

[0010] As a further solution of the utility model: the jacketed reactors are connected through an overflow pipeline, and the overflow pipeline balances the liquid level height of the reactants inside the jacketed reactors.

[0011] As a further solution of the utility model: the overflow pipeline is provided with a waste water output end, and the waste water output end is connected to a water supply pipeline and fed into the feeding pipe.

[0012] As a further solution of the utility model: a high-pressure pipeline is also connected to the feeding pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] This zero-formaldehyde surface sizing adhesive preparation system recovers raw material dust through negative pressure, then through water cycle recovery, and adds it to the production line for use. At the same time, the materials are fed into the jacketed reactor by means of negative pressure and water transportation, and the feeding points are concentrated in one place, which is not only conducive to management, but also reduces dust leakage. Description of the Drawings

[0015] Figure 1 It is a structural schematic diagram of a zero-formaldehyde surface sizing adhesive preparation system.

[0016] In the figure: 1. Jacket reactor; 2. Bin; 3. Feeding pipe; 4. Glue outlet pipeline; 5. Water supply pipeline; 6. Overflow pipeline; 7. Dust suction pipeline; 8. Recovery tank; 9. Return water pipeline; 10. Recovery pipeline; 11. Negative pressure pipeline; 12. Buffer tank; 13. Air inlet; 14. High-pressure pipeline; 15. Medium circulation pipeline. Detailed Embodiments

[0017] Please refer to Figure 1, in the embodiment of the present utility model, a glue-making system for a zero-formaldehyde surface adhesive includes a jacketed reactor 1. A medium circulation pipeline 15 and a glue outlet pipeline 4 are arranged on the jacketed reactor 1. The feeding port of the jacketed reactor 1 is communicated with each bin 2 through a feeding pipe 3. The top of each jacketed reactor 1 is communicated with a negative pressure pipeline 11. An air inlet 13 and a water supply pipeline 5 are connected to the feeding pipe 3. The negative pressure pipeline 11 is in a negative pressure state, extracting the air inside each jacketed reactor 1, so that each jacketed reactor 1 is also in a negative pressure state. Through valve control, the negative pressure state inside the jacketed reactor 1. The jacketed reactor 1 is equipped with a liquid level sensor and a pressure sensor, so that the negative pressure inside the bin 2 is always maintained within a certain range. The air inlet 13 is opened, so that the air flow enters the jacketed reactor 1 through the feeding pipe 3. A blanking device is arranged at the bottom of the bin 2, and the material is sent into the air flow of the feeding pipe 3 through the blanking device. The material enters the jacketed reactor 1 along with the air flow, including polyvinyl alcohol. The material is added through negative pressure suction, and the leakage of the material is avoided, resulting in loss and affecting the workshop environment.

[0018] In a preferred embodiment, a buffer tank 12 is arranged on the negative pressure pipeline 11. The end of the negative pressure pipeline 11 is equipped with a negative pressure pump. The buffer tank 12 has two functions. The inside of the buffer tank 12 is in negative pressure. The first function is to buffer the negative pressure caused when the valve is opened. The second function is to separate the liquid or powder carried out in the negative pressure pipeline 11. A discharge pipe can be arranged at the bottom of the buffer tank 12, and the carried impurities are discharged through the discharge pipe.

[0019] In a preferred embodiment, a dust suction hood is arranged on the bin 2. The dust suction hood is communicated with a dust suction pipeline 7. The negative pressure pipeline 11 is communicated with a recovery pipeline 10. A recovery tank 8 is arranged between the recovery pipeline 10 and the dust suction pipeline 7. The negative pressure pipeline 11 gives negative pressure to the inside of the recovery pipeline 10, so that the raw material dust and air in the dust suction pipeline 7 can enter the recovery tank 8 through negative pressure for separation.

[0020] In a preferred embodiment, the recovery tank 8 is communicated with the water supply pipeline 5. The bottom of the recovery tank 8 is communicated with the feeding pipe 3 through a water return pipeline 9. A distributor is arranged inside the recovery tank 8. The dust suction pipeline 7 is communicated with the distributor. The top of the recovery tank 8 is communicated with the recovery pipeline 10. The distributor is conducive to the uniform distribution of the air flow and the powder. The air flow is evenly distributed into the inside of the recovery tank 8 through the fine holes of the distributor. There is a certain liquid level height of water stored inside the recovery tank 8. The polyvinyl alcohol and other substances in the raw material are all soluble in water. Therefore, the water can capture and dissolve the dust powder in the air flow. The air flow enters the buffer tank 12 after being processed. The water containing polyvinyl alcohol and other substances circulates to the feeding pipe 3 through the water return pipeline 9 and is used as a medium for transporting or flushing the material inside the feeding pipe 3, realizing recycling.

[0021] In a preferred embodiment, the jacketed reactors 1 are connected through an overflow pipeline 6, and the overflow pipeline 6 balances the liquid level height of the reactants inside the jacketed reactors 1. The excess water in the jacketed reactors 1 can enter the next jacketed reactor 1 in an overflow manner.

[0022] In a preferred embodiment, the overflow pipeline 6 is provided with a waste water output end, and the waste water output end is connected to a water supply pipeline 5 and fed into a feeding pipe 3. A high-pressure pipeline 14 is also connected to the feeding pipe 3, and the water recovered through the overflow pipeline 6 enters the feeding pipe 3 through the water supply pipeline 5 for use as a medium.

[0023] It should be noted that the above embodiments all belong to the same inventive concept of the utility model. The descriptions of the embodiments have their own emphases. For the parts not described in detail in individual embodiments, reference can be made to the descriptions in other embodiments.

[0024] The above embodiments only represent the implementation modes of the present utility model. The descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A zero-formaldehyde surface adhesive adhesive making system, comprising a jacketed reactor (1), wherein the jacketed reactor (1) is provided with a medium circulation pipeline (15) and a glue outlet pipeline (4), characterized in that: The feed inlet of the jacketed reactor (1) is connected to each silo (2) via a feeding pipe (3); the top of each jacketed reactor (1) is connected to a negative pressure pipeline (11); and the feeding pipe (3) is connected to an air inlet (13) and a water supply pipeline (5).

2. A zero formaldehyde surface adhesive adhesive making system according to claim 1, characterized in that: The negative pressure pipeline (11) is provided with a buffer tank (12), and the end of the negative pressure pipeline (11) is equipped with a negative pressure pump.

3. A zero formaldehyde surface adhesive adhesive making system according to claim 1, characterized in that: The silo (2) is provided with a dust hood, the dust hood is connected to a dust collection pipeline (7), the negative pressure pipeline (11) is connected to a recovery pipeline (10), and a recovery tank (8) is provided between the recovery pipeline (10) and the dust collection pipeline (7).

4. A zero-formaldehyde surface adhesive adhesive making system according to claim 3, characterized in that: The recovery tank (8) is connected to the water supply pipeline (5), the bottom of the recovery tank (8) is connected to the feeding pipe (3) through the return water pipeline (9), a distributor is arranged inside the recovery tank (8), the dust collection pipeline (7) is connected to the distributor, and the top of the recovery tank (8) is connected to the recovery pipeline (10).

5. A zero-formaldehyde surface adhesive adhesive making system according to claim 1, characterized in that: The jacketed reactors (1) are connected to each other via an overflow pipeline (6), and the overflow pipeline (6) balances the liquid level of the reactants inside the jacketed reactor (1).

6. A zero-formaldehyde surface adhesive adhesive making system according to claim 5, characterized in that: The overflow pipeline (6) is provided with a wastewater output end, which is connected to the water supply pipeline (5) and is fed into the feed pipe (3).

7. A zero-formaldehyde surface adhesive adhesive making system according to claim 1, characterized in that: The feeding pipe (3) is also connected to a high-pressure pipeline (14).

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