Adhesive sampling device

Abstract

The utility model discloses an adhesive sampling device which comprises a reaction kettle, a circulating pipeline, a circulating pump, a sampling pipe and a stop valve, the two ends of the circulating pipeline are connected with the reaction kettle, the circulating pipeline is used for circulating flowing of adhesive in the reaction kettle, the circulating pump is arranged on the circulating pipeline, the sampling pipe is communicated with the circulating pipeline, and the stop valve is arranged on the sampling pipe. The stop valve is arranged on the sampling pipe and is used for controlling the sampling pipe to be opened or closed. According to the utility model, after the circulating pump is started, the adhesive in the reaction kettle can be pumped into the circulating pipeline and flows back into the reaction kettle from the circulating pipeline again, so that the adhesive circularly flows, and during sampling, the stop valve on the sampling pipe is opened, so that part of the adhesive in the circulating pipeline flows into the sampling pipe to be sampled; the sampling process is simple and convenient, sampling can be carried out in the production process, shutdown is not needed, and the influence on the production progress can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to an adhesive sampling device. Background Art

[0002] In the field of wood processing, especially in the manufacture of fiberboard and particleboard, melamine-modified urea-formaldehyde adhesives are favored due to their high strength, water resistance, heat resistance and other characteristics. The performance of adhesives is directly related to the quality of the board, so real-time monitoring of their performance is crucial. Real-time monitoring of adhesive performance is mainly achieved through sampling and testing.

[0003] There are two main methods for sampling adhesives. The first is to directly open the manhole cover and manually use a sampling spoon to take samples, but the sampling spoon is not convenient to operate, which affects the sampling efficiency. At the same time, this method has unorganized emissions of harmful gases, which may harm the health of operators and the environment.

[0004] Another method is to use a device similar to a vacuum oil extraction device for sampling. The adhesive in the reactor is sucked out by a vacuum pump for sampling. However, multiple sampling is required during the production process. Each time sampling is performed, residual liquid from the previous sampling may remain in the sampling tube, which needs to be cleaned before sampling. The sampling process is also relatively cumbersome. If the residual liquid is not cleaned, the sample will not be accurate enough and the adhesive production quality cannot be monitored in real time. Utility Model Content

[0005] The utility model aims to provide an adhesive sampling device to address the deficiencies of the prior art.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is:

[0007] An adhesive sampling device comprises a reaction kettle;

[0008] A circulation pipeline, both ends of which are connected to the reactor, for circulating the adhesive;

[0009] A circulation pump, arranged on the circulation pipeline;

[0010] A sampling tube connected to the circulation pipeline;

[0011] The stop valve is installed on the sampling tube.

[0012] Preferably, a filter is provided on the circulation pipeline, and the filter is located between the circulation pump and the reactor and is used for filtering the adhesive.

[0013] Preferably, a bellows is provided between the circulation pump and the filter, and the bellows is detachably connected to the circulation pipeline.

[0014] Preferably, a support rod is fixedly provided on the top of the reactor, a sampling hopper is fixedly provided on the support rod, and the discharge end of the sampling tube is located above the sampling hopper.

[0015] Preferably, an air collecting hood is provided above the sampling hopper, and a purification pipeline is connected to the air collecting hood.

[0016] Preferably, the circulation pipeline is also connected to a purge pipe, and the purge pipe is provided with a purge valve.

[0017] Preferably, the circulation pump is a diaphragm pump.

[0018] Preferably, a stirring motor is fixedly arranged on the top of the reaction kettle, and a stirring rod is transmission-connected to the stirring motor, and the stirring rod is located inside the reaction kettle.

[0019] Preferably, a heating tube is provided in the reactor.

[0020] The beneficial effects of adopting the above technical solution are:

[0021] 1. In the utility model, when sampling the adhesive in production in the reactor, the circulation pump is turned on and the stop valve is opened. The circulation pump can extract the adhesive in the reactor and re-transport it to the reactor through the circulation pipeline, without stopping the machine to delay production. When the adhesive flows in the circulation pipeline, a part of the adhesive will enter the sampling tube, and the adhesive output by the sampling tube can be used for sampling, which can realize rapid sampling, reduce downtime, and the sampling process is more real-time and more accurate.

[0022] 2. In the present invention, the sampling hopper is located below the discharge end of the sampling tube, so the adhesive flowing out of the sampling tube can enter the sampling hopper for sampling, and a gas collecting hood is provided above the sampling hopper, which is connected to the purification pipeline, and can extract and purify the harmful gas in the adhesive to prevent harm to personnel;

[0023] 3. In the present invention, the adhesive is extracted from the reaction kettle and refluxed into the stirring kettle, which can improve the mixing effect of the adhesive in the stirring kettle and improve the product quality of the adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model.

[0025] In the figure: 1 is a reaction kettle, 2 is a circulation pipeline, 3 is a circulation pump, 4 is a sampling tube, 5 is a stop valve, 6 is a filter, 7 is a bellows, 8 is a support rod, 9 is a sampling hopper, 10 is a gas collecting hood, 11 is a purification pipeline, 12 is a purge pipe, 13 is a purge valve, and 14 is a stirring motor. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figure 1 As shown, an adhesive sampling device includes a reactor 1, a circulation pipeline 2, a circulation pump 3, a sampling tube 4 and a stop valve 5. The adhesive is mixed and reacted in the reactor 1. Both ends of the circulation pipeline 2 are connected to the reactor 1. One end of the circulation pipeline 2 extends to the bottom of the reactor 1, and the other end is connected to the top of the reactor 1. The circulation pump 3 is arranged on the circulation pipeline 2, and is used to extract the adhesive in the reactor 1 into the circulation pipeline 2. One end of the sampling tube 4 is a feed end, and the other end is a discharge end. The feed end of the sampling tube 4 is connected to the circulation pipeline 2. The sampling tube 4 is provided with a stop valve 5 for controlling the circulation and closing of the sampling tube 4. In this embodiment, when sampling is not performed, the stop valve 5 is closed and the circulation pump 3 is turned on. The circulation pump 3 can absorb the adhesive at the bottom of the reactor 1 into the circulation pipe 2, and discharge it from the circulation pipe 2, and drip from the top of the reactor 1 into the reactor 1, so as to better achieve the mixing of the adhesive in the reactor 1; when sampling, the stop valve 5 is opened, and a part of the adhesive flowing in the circulation pipe 2 will flow into the sampling tube 4 and be discharged from the discharge end of the sampling tube 4, thereby completing the sampling of the adhesive. During the sampling process, the reactor 1 does not stop, which can improve the real-time performance of the sampling, and the sampling is convenient and fast, and will not affect the production of the adhesive, thereby avoiding a reduction in the production speed.

[0030] It should be noted that a valve is provided on the circulation pipeline 2 , and the valve is used to control the opening or closing of the circulation pipeline 2 . The valve can be closed when the circulation pipeline 2 is not in use. The valve is located between the circulation pump 3 and the reactor 1 .

[0031] Furthermore, a filter 6 is provided on the circulation pipeline 2 , and the filter 6 is located between the circulation pump 3 and the reactor 1 , and can filter out large particles of impurities in the adhesive to prevent the large particles of impurities from entering the circulation pipeline 2 and clogging the circulation pipeline 2 .

[0032] Furthermore, in the actual production process, the part between the filter 6 and the circulation pump 3 of the circulation pipe 2 is more prone to blockage. Therefore, in order to facilitate maintenance and unblocking, a bellows 7 is set between the circulation pump 3 and the filter 6. The bellows 7 is detachably connected to the circulation pipe 2. After the bellows 7 is partially blocked, the bellows 7 can be removed from the circulation pipe 2 for cleaning, and then reinstalled after cleaning. The disassembly and replacement are simple and convenient, which is convenient for equipment repair and maintenance.

[0033] Furthermore, a support rod 8 is vertically fixed on the top of the reactor 1, and a sampling hopper 9 is fixed on the support rod 8. The discharge end of the sampling tube 4 is located above the sampling hopper 9. During the sampling process, the sampling cup is placed in the sampling hopper 9. After the stop valve 5 is opened, the adhesive can flow from the sampling tube 4 into the sampling cup of the sampling hopper 9. After the sampling is completed, the stop valve 5 is closed and the sampling cup is removed from the sampling hopper 9.

[0034] In another embodiment, since the sampled adhesive will emit some harmful gases, in order to prevent them from being inhaled into the human body, an air collecting hood 10 is arranged above the sampling hopper 9, and the air collecting hood 10 is connected to a purification pipe 11, and the purification pipe 11 is connected to a waste gas treatment system. After the adhesive sample enters the sampling cup in the sampling hopper 9, the air collecting hood 10 can extract the harmful gases emitted from the sampling cup and send them to the waste gas treatment system for treatment.

[0035] Furthermore, the purification pipe 11 is also connected to the top of the reactor 1, which can absorb and treat the harmful gases emitted by the adhesive in the reactor 1, reduce the generation and emission of harmful gases, ensure that the internal space of the workshop is cleaner, and protect the health of workers.

[0036] Furthermore, the circulation pipeline 2 is also connected to a purge pipe 12, one end of the purge pipe 12 is connected to the circulation pipeline 2, and the other end is connected to an air compressor. The purge pipe 12 is provided with a purge valve 13. After the circulation pipeline 2 has been working for a long time, in order to avoid clogging of the pipeline, the purge valve 13 can be opened, and compressed air enters the circulation pipeline 2 from the purge pipe 1 to purge the circulation pipeline 12 and the material taking pipe 4 to avoid clogging of the pipeline.

[0037] Furthermore, the circulation pump 3 is a diaphragm pump, and the diaphragm pump is a pneumatic diaphragm pump. The pneumatic diaphragm pump is connected to an air compressor, which can provide an air source for the pneumatic diaphragm pump.

[0038] In another embodiment, a stirring motor 14 is fixedly provided on the top of the reactor 1, and a stirring rod is transmission-connected to the stirring motor 14. Specifically, the output shaft of the stirring motor 14 is fixedly connected to the stirring rod. The stirring motor 14 can drive the stirring rod to rotate. The stirring rod is located inside the reactor 1. During the adhesive reaction process, the stirring rod rotates inside the reactor 1 to stir the adhesive in the reactor 1, so that the adhesive reaction is more uniform.

[0039] Furthermore, a heating tube is provided in the reactor 1, and the heating tube is a steam heating tube. High-pressure and high-temperature steam is introduced into the heating tube and the steam is circulated in the heating tube. The heating tube can heat the adhesive in the reactor 1 and provide reaction conditions.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adhesive sampling device, characterized in that: It comprises a reaction kettle (1); A circulation pipeline (2), both ends of which are connected to the reaction kettle (1) and are used for circulating the adhesive; A circulation pump (3) is arranged on the circulation pipeline (2); A sampling tube (4) is connected to the circulation pipeline (2); The stop valve (5) is arranged on the sampling tube (4).

2. An adhesive sampling device according to claim 1, characterized in that: The circulation pipeline (2) is provided with a filter (6), which is located between the circulation pump (3) and the reaction kettle (1) and is used for filtering the adhesive.

3. An adhesive sampling device according to claim 2, characterized in that: A bellows (7) is disposed between the circulation pump (3) and the filter (6), and the bellows (7) is detachably connected to the circulation pipeline (2).

4. The adhesive sampling device according to claim 1, characterized in that: A support rod (8) is fixedly arranged on the top of the reaction kettle (1), a sampling hopper (9) is fixedly arranged on the support rod (8), and the discharge end of the sampling tube (4) is located above the sampling hopper (9).

5. The adhesive sampling device according to claim 4, characterized in that: An air collecting hood (10) is arranged above the sampling hopper (9), and a purification pipeline (11) is connected to the air collecting hood (10).

6. The adhesive sampling device according to claim 1, characterized in that: The circulation pipeline (2) is also connected to a purge pipe (12), and the purge pipe (12) is provided with a purge valve (13).

7. The adhesive sampling device according to claim 1, characterized in that: The circulation pump (3) is a diaphragm pump.

8. The adhesive sampling device according to claim 1, characterized in that: A stirring motor (14) is fixedly arranged on the top of the reaction kettle (1), and a stirring rod is drivingly connected to the stirring motor (14), and the stirring rod is located inside the reaction kettle (1).

9. The adhesive sampling device according to claim 1, characterized in that: A heating tube is arranged in the reaction kettle (1).

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