An adhesive raw material conveying device

Abstract

This utility model discloses an adhesive raw material conveying device, which mainly consists of a raw material tank, a conveying pump, a discharge valve, and a filtration mechanism connected sequentially by pipelines. The filtration mechanism includes a filter tank, a cleaning tank, an impurity tank, and a pump. The filter tank is equipped with a filter element. One side of the filter tank is connected to a raw material inlet pipe (with a first electrically controlled valve) and an impurity outlet pipe (with a second electrically controlled valve). The other side is equipped with a raw material outlet pipe (with a third electrically controlled valve), a drain outlet pipe (with a fourth electrically controlled valve), and a cleaning inlet pipe (with a fifth electrically controlled valve). The pump pumps the liquid in the cleaning tank into the cleaning inlet pipe. The impurity outlet pipe and the drain outlet pipe both lead to the impurity tank. The raw material enters the filter tank from the raw material tank for purification and is then conveyed to the pump body. During cleaning, the electrically controlled valves switch to achieve reverse flushing, and the impurities are discharged into the impurity tank. This device integrates filtration and automatic cleaning functions, and achieves efficient purification of raw materials and system maintenance through multi-valve coordinated control, ensuring the continuity of adhesive production and the cleanliness of raw materials.

Description

Technical Field

[0001] This utility model relates to the technical field of adhesive production equipment, specifically an adhesive raw material conveying device. Background Technology

[0002] In the production process of wood-based adhesives (such as polyvinyl acetate adhesive, PVAc adhesive), the raw materials (vinyl acetate monomer) need to be transported from the raw material tank to the adhesive production reactor. In the existing technology, the raw materials are usually transported directly by a transfer pump, such as the adhesive raw material transport system disclosed in announcement number CN 203448048 U. However, such a transport structure cannot effectively filter solid particles, polymer gels or other impurities inside the raw materials, which ultimately leads to unstable adhesive viscosity, reduced bonding strength or reduced transparency, affecting the final product quality. Utility Model Content

[0003] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a conveying device that can filter raw materials to improve the quality of the final product.

[0004] The technical solution adopted by this utility model to achieve the above-mentioned objective is as follows: an adhesive raw material conveying device, comprising a raw material tank, a conveying pump, and a discharge valve connected in sequence by pipelines, wherein a filtration mechanism is provided between the raw material tank and the conveying pump, the filtration mechanism comprising a filter tank, a cleaning tank, an impurity tank, and a pump, wherein a filter element is fixedly connected inside the filter tank, and a raw material inlet pipe and an impurity outlet pipe are fixedly connected to one side of the filter element on the filter tank, wherein a first electrically controlled valve is provided on the raw material inlet pipe, and a second electrically controlled valve is provided on the impurity outlet pipe, wherein a raw material outlet pipe, a sludge outlet pipe, and a cleaning inlet pipe are fixedly connected to the other side of the filter element on the filter tank, wherein a third electrically controlled valve is provided on the raw material outlet pipe, a fourth electrically controlled valve is provided on the sludge outlet pipe, and a fifth electrically controlled valve is provided on the cleaning inlet pipe;

[0005] The inlet of the pump is connected to the cleaning tank pipeline, the outlet of the pump is connected to the cleaning inlet pipeline, and the impurity outlet pipe and the sludge outlet pipe are connected to the impurity tank pipeline.

[0006] The raw material tank is connected to the raw material inlet pipe, and the raw material outlet pipe is connected to the delivery pump via a pipeline.

[0007] In the above technical solution, to facilitate more thorough cleaning or direct replacement of the filter element, the filter tank adopts the following structure:

[0008] The filter tank includes an upper tank body, a lower tank body, and fasteners. Flanges are fixedly connected to the top surface of the lower tank body and the bottom surface of the upper tank body. Pressure rings are fixedly connected to the interior of the lower tank body near its top surface and the interior of the upper tank body near its bottom surface. The two sets of flanges are connected by the fasteners, and the filter element is clamped between the two sets of pressure rings.

[0009] Furthermore, the filter element includes a filter frame and a filter cloth fixedly connected inside the filter frame, with two sets of pressure rings clamping the filter frame.

[0010] In the above technical solution, in order to ensure that the raw materials and cleaning liquid are fully discharged from the filter tank, the bottom surface of the lower tank adopts a conical structure, and the drain pipe and the raw material outlet pipe are both located at the bottom end of the lower tank.

[0011] In the above technical solution, in order to ensure excellent backwashing effect on the filter element, a cleaning shaft is rotatably connected to the upper tank, and a brush platform is fixedly connected to the bottom end of the cleaning shaft, with the brush platform in contact with the filter element.

[0012] Furthermore, the pump is fixedly connected to the upper tank. The pump includes a motor and a pump body. The motor and the pump shaft of the pump body are connected through a transmission shaft. The transmission shaft is poweredly connected to the cleaning shaft. In this way, when the motor drives the pump body to work, it can synchronously drive the cleaning shaft to rotate, thereby realizing the brushing of the filter by the brush table.

[0013] Furthermore, a worm gear is fixedly connected to the cleaning shaft, and a worm is rotatably connected to the upper tank body. The worm meshes with the worm gear, and the worm and the transmission shaft are powered through a transmission assembly.

[0014] Furthermore, the transmission assembly includes a driving sprocket, a driven sprocket, and a chain. The driving sprocket is fixedly connected to the transmission shaft, and the driven sprocket is fixedly connected to the worm gear. The driving sprocket and the driven sprocket are connected by the chain.

[0015] The beneficial effects of this utility model are:

[0016] 1. When the raw material (pure vinyl acetate monomer) is pumped out of the raw material tank by the delivery pump, the raw material can enter the filter tank and be filtered by the filter element in the filter tank to ensure that there are no impurity particles inside the raw material, thereby improving the quality of the final adhesive (polyvinyl acetate glue).

[0017] 2. After prolonged filtration by the filter element, the flow path is changed by controlling the first, second, third, fourth, and fifth solenoid valves, so that the pump can pump the cleaning liquid in the cleaning tank into the filter tank, thereby backwashing the filter element. The impurities in the backwash liquid can enter the impurity tank. This structure can reduce manual cleaning of the filter element, improve the filtration efficiency of the filter element, and after the backwash is completed, the cleaning liquid in the filter tank can be completely discharged into the impurity tank by opening the fourth solenoid valve to avoid the cleaning liquid interfering with the subsequent raw materials.

[0018] 3. A cleaning shaft is also provided on the filter tank, and a brush platform is provided at the bottom of the cleaning shaft. When backwashing the filter element, the cleaning shaft can be rotated by the power of the pump, so that the brush platform can scrub the filter surface of the filter element and improve the cleaning effect of the filter element. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the filter tank in this utility model;

[0021] Figure 3 This is a schematic diagram of the disassembled filter tank in this utility model;

[0022] Figure 4 This is a structural schematic diagram of the filter tank after disassembly in this utility model from another angle.

[0023] In the diagram: 100 Raw material tank, 200 Conveying pump, 300 Discharge valve, 401 Filter tank, 4011 Upper tank body, 4012 Lower tank body, 4013 Fastener, 4014 Flange, 4015 Lower pressure ring, 402 Cleaning tank, 403 Impurity tank, 404 Pump, 4041 Motor, 4042 Pump body, 405 Filter element, 4051 Filter frame, 4052 Filter cloth, 406 Raw material inlet pipe, 407 Impurity outlet pipe, 408 First solenoid valve, 409 Second solenoid valve, 410 Raw material outlet pipe, 411 Drain outlet pipe, 412 Cleaning inlet pipe, 413 Third solenoid valve, 414 Fourth solenoid valve, 415 Fifth solenoid valve, 416 Cleaning shaft, 417 Brush table, 418 Worm gear, 419 Worm, 420 Transmission assembly. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Example 1

[0026] Please see Figures 1 to 4An adhesive raw material conveying device includes a raw material tank 100, a conveying pump 200 and a discharge valve 300 connected in sequence by pipelines. A filter mechanism is provided between the raw material tank 100 and the conveying pump 200 to filter impurities in the raw material (pure vinyl acetate monomer) to ensure that the raw material entering the conveying pump 200 is free of impurities, thereby improving the quality of the final adhesive (polyvinyl acetate glue).

[0027] The filtration mechanism includes a filter tank 401, a cleaning tank 402, an impurity tank 403, and a pump 404. Specifically, a filter element 405 is fixedly connected inside the filter tank 401. The filter element 405 is used to intercept impurity particles in the raw material. More specifically, to facilitate cleaning and replacement of the filter element 405, in this embodiment, the filter tank 401 includes an upper tank body 4011, a lower tank body 4012, and fasteners 4013. Firstly, flanges 4014 are fixedly connected to the top surface of the lower tank body 4012 and the bottom surface of the upper tank body 4011. Secondly, flanges 4014 are fixedly connected to the interior of the lower tank body 4012 near its top surface and the interior of the upper tank body 4011 near its bottom surface. Both are fixedly connected with a lower pressure ring 4015. The two sets of flanges 4014 are connected by fasteners 4013, and the filter element 405 is clamped between the two sets of lower pressure rings 4015. In this way, by unscrewing the fasteners 4013, the upper tank 4011 and the lower tank 4012 can be separated. After separation, the filter element 405 can no longer be clamped and fixed, and the filter element 405 can be directly removed. The operation is simple and convenient. Furthermore, the filter element 405 includes a filter frame 4051 and a filter cloth 4052 fixedly connected inside the filter frame 4051. The two sets of lower pressure rings 4015 fix the filter cloth 4052 by clamping the filter frame 4051.

[0028] Furthermore, a raw material inlet pipe 406 and an impurity outlet pipe 407 are fixedly connected to the upper tank body 4011. A first solenoid valve 408 is provided on the raw material inlet pipe 406, and a second solenoid valve 409 is provided on the impurity outlet pipe 407.

[0029] The lower tank 4012 is fixedly connected to a raw material outlet pipe 410, a drain outlet pipe 411, and a cleaning inlet pipe 412. The raw material outlet pipe 410 is equipped with a third solenoid valve 413, the drain outlet pipe 411 is equipped with a fourth solenoid valve 414, and the cleaning inlet pipe 412 is equipped with a fifth solenoid valve 415. Furthermore, in order to ensure that the raw material and cleaning liquid can be fully discharged from the filter tank 401, the bottom surface of the lower tank 4012 adopts a conical structure, and the drain outlet pipe 411 and the raw material outlet pipe 410 are both located at the bottom end of the lower tank 4012.

[0030] Furthermore, the inlet of pump 404 is connected to the pipeline of cleaning tank 402, the outlet of pump 404 is connected to the pipeline of cleaning inlet pipe 412, the impurity outlet pipe 407 and the clean outlet pipe 411 are connected to the pipeline of impurity tank 403, the raw material tank 100 is connected to the pipeline of raw material inlet pipe 406, and the raw material outlet pipe 410 is connected to the pipeline of conveying pump 200.

[0031] When the above structure is used for raw material filtration, the first solenoid valve 408 and the third solenoid valve 413 are opened, and the second solenoid valve 409, the fourth solenoid valve 414 and the fifth solenoid valve 415 are closed. The raw material enters the filter tank 401 from the raw material tank 100 through the raw material inlet pipe 406, and after being filtered by the filter element 405, it enters the conveying pump 200 from the raw material outlet pipe 410 and is finally conveyed to the discharge valve 300.

[0032] When the backwashing mode is in operation, the second solenoid valve 409 and the fifth solenoid valve 415 are opened, and the first solenoid valve 408, the third solenoid valve 413 and the fourth solenoid valve 414 are closed. The pump 404 pumps the cleaning liquid in the cleaning tank 402 into the filter tank 401 to backwash the filter element 405. The impurities washed off are discharged into the impurity tank 403 through the impurity outlet pipe 407.

[0033] After backwashing is completed, the fourth electrically controlled valve 414 is opened and the other valves are closed, so that the residual cleaning liquid is completely discharged into the impurity tank 403 to avoid contaminating the subsequent raw materials.

[0034] Example 2

[0035] Please see Figures 2 to 4 An adhesive raw material conveying device, based on embodiment 1, in order to ensure a better backwashing effect on filter element 405, a cleaning shaft 416 is rotatably connected to the upper tank 4011, and a brush platform 417 is fixedly connected to the bottom end of the cleaning shaft 416, and the brush platform 417 abuts against the filter element 405.

[0036] Furthermore, the pump 404 is fixedly connected to the upper tank 4011. The pump 404 includes a motor 4041 and a pump body 4042. The pump shaft of the motor 4041 and the pump body 4042 are connected through a transmission shaft. A worm gear 418 is fixedly connected to the cleaning shaft 416. A worm 419 is rotatably connected to the upper tank 4011. The worm 419 is meshed with the worm gear 418. The worm 419 and the transmission shaft are connected by a transmission assembly 420. In this embodiment, the transmission assembly 420 includes a drive sprocket, a driven sprocket, and a chain. The drive sprocket is fixedly connected to the transmission shaft, and the driven sprocket is fixedly connected to the worm 419. The drive sprocket and the driven sprocket are connected by a chain. Thus, when the motor 4041 drives the pump body 4042 to pump the cleaning liquid in the cleaning tank 402, it can simultaneously drive the cleaning shaft 416 to rotate, thereby enabling the brush table 417 to brush the filter element 405.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adhesive raw material conveying device, comprising a raw material tank (100), a conveying pump (200), and a discharge valve (300) connected in sequence by pipelines, characterized in that: A filtration mechanism is provided between the raw material tank (100) and the conveying pump (200). The filtration mechanism includes a filter tank (401), a washing tank (402), an impurity tank (403), and a pump (404). A filter element (405) is fixedly connected inside the filter tank (401). A raw material inlet pipe (406) and an impurity outlet pipe (407) are fixedly connected to one side of the filter element (405) on the filter tank (401). A first electrical control is provided on the raw material inlet pipe (406). The impurity outlet pipe (407) is equipped with a second electrically controlled valve (409). The filter tank (401) is fixedly connected to the other side of the filter element (405) with a raw material outlet pipe (410), a drain outlet pipe (411) and a cleaning inlet pipe (412). The raw material outlet pipe (410) is equipped with a third electrically controlled valve (413), the drain outlet pipe (411) is equipped with a fourth electrically controlled valve (414), and the cleaning inlet pipe (412) is equipped with a fifth electrically controlled valve (415). The inlet of the pump (404) is connected to the pipeline of the cleaning tank (402), the outlet of the pump (404) is connected to the pipeline of the cleaning inlet pipe (412), and the impurity outlet pipe (407) and the discharge outlet pipe (411) are connected to the pipeline of the impurity tank (403). The raw material tank (100) is connected to the raw material inlet pipe (406) and the raw material outlet pipe (410) is connected to the delivery pump (200).

2. The adhesive raw material conveying device according to claim 1, characterized in that: The filter tank (401) includes an upper tank body (4011), a lower tank body (4012), and fasteners (4013). Flanges (4014) are fixedly connected to the top surface of the lower tank body (4012) and the bottom surface of the upper tank body (4011). Lower pressure rings (4015) are fixedly connected to the interior of the lower tank body (4012) near its top surface and the interior of the upper tank body (4011) near its bottom surface. The two sets of flanges (4014) are connected by the fasteners (4013), and the filter element (405) is clamped between the two sets of lower pressure rings (4015).

3. The adhesive raw material conveying device according to claim 2, characterized in that: The filter element (405) includes a filter frame (4051) and a filter cloth (4052) fixedly connected inside the filter frame (4051), and two sets of pressure rings (4015) clamp the filter frame (4051).

4. The adhesive raw material conveying device according to claim 2, characterized in that: The bottom surface of the lower tank (4012) adopts a conical structure, and the drain pipe (411) and the raw material outlet pipe (410) are both located at the bottom end of the lower tank (4012).

5. The adhesive raw material conveying device according to claim 2, characterized in that: A cleaning shaft (416) is rotatably connected to the upper tank (4011), and a brush platform (417) is fixedly connected to the bottom end of the cleaning shaft (416). The brush platform (417) abuts against the filter element (405). The pump (404) is fixedly connected to the upper tank (4011). The pump (404) includes a motor (4041) and a pump body (4042). The motor (4041) and the pump shaft of the pump body (4042) are connected through a transmission shaft. The transmission shaft is poweredly connected to the cleaning shaft (416).

6. The adhesive raw material conveying device according to claim 5, characterized in that: A worm gear (418) is fixedly connected to the cleaning shaft (416), and a worm (419) is rotatably connected to the upper tank (4011). The worm (419) meshes with the worm gear (418), and the worm (419) is powered by a transmission assembly (420) to the transmission shaft.

7. The adhesive raw material conveying device according to claim 6, characterized in that: The transmission assembly (420) includes a drive sprocket, a driven sprocket, and a chain. The drive sprocket is fixedly connected to the transmission shaft, and the driven sprocket is fixedly connected to the worm gear (419). The drive sprocket and the driven sprocket are connected by the chain.

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