Screw pumping precision coating equipment suitable for high-viscosity slurry

Abstract

The invention relates to the technical field of water suction pumps, and discloses screw pumping precision coating equipment suitable for high-viscosity slurry, which comprises two mounting side plates, a coating rod arranged between the mounting side plates, a coating scraper arranged at the lower end of the coating rod, and a circulating unit arranged at the lower end of the coating rod, the circulating unit comprises a liquid level control part and a suction part which are arranged between the coating rod and the mounting side plate; through the arrangement of the suction part, the suction part can automatically and intermittently suck slurry accumulated on one side of the coating scraper into the variable pressure box, the collected slurry is pushed into the liquid supply box through the variable pressure box for secondary use, and meanwhile through the arrangement of the liquid level control part, before the suction part sucks the accumulated slurry, the liquid level control part controls the liquid level of the slurry in the liquid supply box. The slurry on one side of the coating scraper is layered through the cutting plate, and then the suction component works, so that the situation that the suction component only sucks redundant slurry due to the characteristic of high viscosity of the slurry is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slurry coating, in particular to a screw pumping precision coating device suitable for high-viscosity slurry. BACKGROUND

[0002] The screw pumping precision coating device for high-viscosity slurry is widely used in the industries of paint, adhesive, electronic material, etc. The device combines the high-efficiency conveying characteristics of the screw pump and the precise control ability of the coating device, and can efficiently and uniformly coat the high-viscosity material to different surfaces. The high-viscosity slurry generally refers to the fluid with high viscosity. These materials are used in large viscosity and are prone to poor flowability and uneven conveying during conveying. Therefore, the screw pump can effectively avoid such problems.

[0003] The high-precision coating device is a device that can accurately control the coating speed and thickness. Its principle is to use a coating scraper to scrape the slurry on the surface of the material during relative motion and scrape it to a specified thickness. However, there are the following problems. When the coating scraper scrapes the slurry, the excess slurry will be blocked by the scraper and always stay on one side of the scraper. As the slurry increases, it will cause the slurry to be unable to be utilized and be exposed to the outside for a long time, resulting in bubbles or dust pollution in the slurry, affecting the quality of subsequent coating. Therefore, the staff needs to regularly process the slurry on one side of the scraper, which is complex and time-consuming during processing, affects the coating efficiency, and increases the workload of the staff. SUMMARY

[0004] In view of the problem that the excess slurry will accumulate on one side of the coating scraper and cannot be utilized or recycled when the coating scraper scrapes the slurry in the prior art, a screw pumping precision coating device suitable for high-viscosity slurry is proposed.

[0005] The present application provides a screw pumping precision coating device suitable for high-viscosity slurry, which aims to automatically and intermittently suck the accumulated slurry on one side of the coating scraper into the variable pressure tank by setting the suction component, and push the collected slurry into the liquid supply tank for secondary use through the variable pressure tank. At the same time, by setting the liquid level control component, the slurry on one side of the coating scraper is layered by the cutting plate before the suction component sucks the accumulated slurry, and then the suction component works, preventing the high-viscosity characteristics of the slurry from causing the part of the slurry to be sucked into the suction head when the suction component sucks the excess slurry, resulting in the thickness of the slurry being less than the height of the coating scraper during subsequent coating, and reducing the thickness of the coating.

[0006] The technical solution of the present invention is as follows: a screw pump precision coating device suitable for high viscosity slurry, comprising two mounting side plates, a coating rod disposed between the mounting side plates, a coating blade disposed at the lower end of the coating rod, and a circulation unit disposed at the lower end of the coating rod, the circulation unit comprising a liquid level control component and a suction component disposed between the coating rod and the mounting side plates; The liquid level control component includes a rotating column disposed between two mounting side plates, a cam disposed on the outer wall of the rotating column, a bearing plate disposed on the side wall of the mounting side plate, a spring rod disposed on the side wall of the bearing plate, a trigger ring disposed at one end of the spring rod, the cam being located inside the trigger ring, an mounting strip disposed at the lower end of the coating rod, a cutting plate slidably disposed within the mounting strip, a connecting plate disposed between the cutting plate and the upper end of the trigger ring, and a mating plate disposed at the lower end of the coating rod. The suction component includes a suction head disposed at the lower end of the coating rod. The suction head is located between the coating blade and the mounting strip. The horizontal height of the cutting plate and the lower end of the coating blade is higher than the height of the coating blade. A drive motor is fixedly installed on the outer side wall of the mounting side plate. The drive end of the drive motor is fixedly connected to one end of the rotating column.

[0007] Furthermore, the suction component also includes a liquid storage tank disposed on the side wall of the coating rod, a flow pipe disposed on the side wall of the liquid storage tank, and a transformer box disposed on the outer wall of the mounting side plate, with one end of the flow pipe fixedly connected to the corresponding transformer box.

[0008] Furthermore, an unwinding shaft is rotatably mounted between the inner walls of the two mounting side plates, a conveyor belt is disposed between the two unwinding shafts, and a transformer assembly is installed between the unwinding shafts and the transformer box.

[0009] Furthermore, the transformer assembly includes a control gear disposed at one end of the unwinding shaft, a shaft disposed on the outer wall of the control gear, a sliding plate slidably disposed inside the transformer box, a mounting seat disposed on the side wall of the sliding plate, and a connecting rod disposed between the shaft and the mounting seat.

[0010] Furthermore, a transmission chain is sleeved and installed between the unwinding shaft and the rotating column.

[0011] Furthermore, a liquid outlet pipe is installed at the lower end of the coating rod. The liquid outlet pipe is located at the front end of the mounting strip, and the horizontal height of the lower end of the liquid outlet pipe is higher than the horizontal height of the lower end of the coating blade.

[0012] Furthermore, a liquid supply tank is installed on the outer wall of the mounting side plate, and the liquid supply tank is connected to the liquid outlet pipe.

[0013] Furthermore, one end of the transformer box is fixedly connected to a return pipe, and one end of the return pipe is fixedly connected to the inside of the liquid supply tank. Both the return pipe and the flow pipe are fixedly installed with one-way valves, and the flow directions of the two one-way valves are opposite.

[0014] The beneficial effects of this invention are: 1. By setting up a suction component, the slurry on one side of the coating blade can be intermittently drawn into the transformer box through the suction head in the suction component. The coating blade side is cleaned regularly, which effectively avoids the accumulation of slurry and its long-term exposure to the outside, which can cause air bubbles or dust to appear inside the slurry, affecting the subsequent coating quality and efficiency. This effectively improves the flexibility of the equipment and the quality of the produced products.

[0015] 2. By setting up a liquid level control component, before suctioning the slurry accumulated on one side of the coating blade, the liquid level control component can first cut the accumulated slurry through the cutting plate. The slurry at the upper part of the cutting plate is excess and needs to be sucked away by the suction head. The slurry at the lower part of the cutting plate is the slurry that needs to be coated on the material. The design of the cutting plate can effectively prevent the suction head from sucking up the slurry when it is high in viscosity. This would prevent the suction head from simultaneously bringing the slurry to be coated into the suction head, making the slurry thickness in that area less than the height of the coating blade. This would prevent the coating blade from coating the slurry in that area, and the slurry thickness in that area would be less than the normal required thickness, affecting the quality of subsequent coating.

[0016] 3. By setting up return pipes and connecting pipes, and controlling the increase and decrease of the pressure inside the transformer box, not only can the slurry be sucked up, but the collected slurry can also be transported to the supply tank for secondary use through a one-way valve, which effectively reduces the cost in the production process, reduces the waste of slurry, and effectively improves the operating efficiency of the equipment. Attached Figure Description

[0017] Figure 1 This is a first-view three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the loop unit structure of the present invention; Figure 3 This is a schematic diagram of the liquid level control component of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the liquid storage tank installation structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 7 This is a schematic diagram of the trigger ring mounting structure of the present invention; Figure 8 This is a schematic diagram of the suction component structure of the present invention.

[0018] In the picture: 1. Side mounting plate; 2. Coating rod; 3. Coating blade; 101. Rotating column; 102. Cam; 103. Bearing plate; 104. Spring rod; 105. Trigger ring; 106. Mounting strip; 107. Cutting plate; 108. Connecting plate; 109. Mating plate; 201. Suction head; 202. Storage tank; 203. Flow tube; 204. Transformer box; 301. Unwinding shaft; 302. Conveyor belt; 303. Shaft; 304. Sliding plate; 305. Mounting base; 306. Connecting rod; 307. Control gear; 401. Discharge tube. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Example 1, referring to Figures 1-7 The first embodiment of the present invention provides a screw pump precision coating device suitable for high viscosity slurries, including two mounting side plates 1, a coating rod 2 fixedly mounted between the mounting side plates 1, a coating blade 3 fixedly mounted at the lower end of the coating rod 2, and a circulation unit mounted at the lower end of the coating rod 2. The circulation unit includes a liquid level control component and a suction component mounted between the coating rod 2 and the mounting side plates 1.

[0021] The liquid level control component includes a rotating column 101 rotatably mounted between two mounting side plates 1, a cam 102 fixedly mounted on the outer wall of the rotating column 101, a bearing plate 103 fixedly mounted on the side wall of the mounting side plate 1, a spring rod 104 fixedly mounted on the side wall of the bearing plate 103, a trigger ring 105 fixedly mounted on one end of the spring rod 104, the cam 102 being located inside the trigger ring 105, a mounting strip 106 fixedly mounted on the lower end of the coating rod 2, a cutting plate 107 slidably mounted within the mounting strip 106, a connecting plate 108 fixedly mounted between the cutting plate 107 and the upper end of the trigger ring 105, and a mating plate 109 fixedly mounted on the lower end of the coating rod 2.

[0022] The suction component includes a suction head 201 fixedly installed at the lower end of the coating rod 2. The suction head 201 is located between the coating blade 3 and the mounting strip 106. The horizontal height of the cutting plate 107 and the lower end of the coating blade 3 is higher than the height of the coating blade 3. A drive motor (not shown in the figure) is fixedly installed on the outer wall of the mounting side plate 1. The drive end of the drive motor is fixedly connected to one end of the rotating column 101.

[0023] Specifically, the liquid level control component is used to cut the slurry accumulated at the front end of the coating blade 3. At the same time, when the suction head 201 sucks the slurry, the moving cutting plate 107 can cut the slurry, preventing the suction head 201 from simultaneously sucking in the slurry at the bottom during the suction process, which would affect the subsequent coating quality (because the slurry has high viscosity, when the suction head 201 sucks the slurry accumulated at the top, the slurry at the top and the slurry at the bottom stick together, causing the slurry at the top to carry the slurry at the bottom into the suction head 201, resulting in the thickness of the slurry at the top of the material being less than the height of the coating blade 3, causing the thickness of the slurry coated on the material to be less than the specified thickness, making the finished product unable to meet production requirements). Therefore, by setting the liquid level control component, the amount of slurry sucked by the suction head 201 can be reasonably controlled to prevent the above situation from occurring.

[0024] Before the slurry accumulated on one side of the coating blade 3 needs to be suctioned, the liquid level control component can first cut the accumulated slurry through the cutting plate 107. The slurry at the upper end of the cutting plate 107 is excess and needs to be sucked away by the suction head 201. The slurry at the lower end of the cutting plate 107 is the slurry that needs to be coated on the material. The design of the cutting plate 107 can effectively prevent the suction head 201 from sucking out the excess slurry. Due to the high viscosity of the slurry, the suction head 201 will not simultaneously bring the slurry to be coated into the suction head 201 when it sucks out the excess slurry. This will make the slurry thickness in this area less than the height of the coating blade 3, so that the coating blade 3 cannot coat the slurry in this area. The slurry thickness in this area is less than the normal required thickness, which will affect the quality of subsequent coating.

[0025] During operation, when the coating equipment is started, the drive motor drives the rotating column 101 to rotate through the drive end. The cam 102 on the outer wall of the rotating column 101 rotates synchronously, and the cam 102 is located inside the trigger ring 105. Each time the cam 102 rotates once, it will drive the trigger ring 105 to move horizontally away from the spring rod 104. During the displacement, the trigger ring 105 will drive the cutting plate 107 to move horizontally synchronously. The cutting plate 107 cuts the slurry, so that the upper slurry is sucked away by the suction head 201, while the lower slurry is used for coating normally. After the cam 102 rotates once, the trigger ring 105 is reset under the elastic force of the spring rod 104, and the cutting plate 107 is reset synchronously, and the operation is repeated.

[0026] Example 2, refer to Figures 1-6 as well as Figure 8This is the second embodiment of the present invention, which differs from the first embodiment in that: the suction component further includes a liquid storage tank 202 fixedly installed on the side wall of the coating rod 2, a flow pipe 203 fixedly installed on the side wall of the liquid storage tank 202, and a transformer box 204 fixedly installed on the outer wall of the mounting side plate 1. One end of the flow pipe 203 is fixedly connected to the corresponding transformer box 204. An unwinding shaft 301 is rotatably installed between the inner walls of the two mounting side plates 1, and a conveyor belt 302 is sleeved between the two unwinding shafts 301. A transformer assembly is installed between the unwinding shaft 301 and the transformer box 204. The transformer assembly includes a control gear 307 fixedly installed at one end of the unwinding shaft 301, a shaft 303 fixedly installed on the outer wall of the control gear 307, a sliding plate 304 slidably installed inside the transformer box 204, a mounting seat 305 fixedly installed on the side wall of the sliding plate 304, and a connecting rod 306 hinged between the shaft 303 and the mounting seat 305. A transmission chain (not shown in the figure) is sleeved between the unwinding shaft 301 and the rotating column 101.

[0027] Specifically, by setting up a suction component, the suction head 201 in the suction component can intermittently draw the slurry on one side of the coating blade 3 into the transformer box 204, and periodically clean one side of the coating blade 3, effectively avoiding the accumulation of slurry and prolonged exposure to the outside, which would cause air bubbles or dust to appear inside the slurry, affecting the subsequent coating quality and efficiency, effectively improving the flexibility of the equipment and improving the quality of the produced products.

[0028] It should be noted that the initial angle of cam 102 and the initial position of sliding plate 304 need to be limited. That is, when sliding plate 304 is located inside transformer box 204 and closest to the outermost side, the protrusion of cam 102 is horizontal and parallel, and at this time the cutting plate 107 is located at the innermost part of mounting strip 106. The purpose is to make the suction action and the cutting action occur simultaneously. Since a transmission chain is installed between unwinding shaft 301 and rotating column 101, the rotation of the two is in the same direction and at the same speed. Therefore, reasonably setting the initial angle of cam 102 and the initial position of sliding plate 304 can ensure that suction and cutting occur simultaneously and avoid the two running in opposite directions and failing to play a mutual auxiliary role.

[0029] During use, when the rotating column 101 rotates, it drives the unwinding shaft 301 to rotate synchronously through the transmission chain. During the rotation, the control gear 307 at one end of the unwinding shaft 301 pulls the sliding plate 304 along the inside of the transformer box 204 through the connecting rod 306 at the upper end of the shaft 303. When the sliding plate 304 moves outward in the horizontal direction, the pressure inside the transformer box 204 decreases. At this time, the slurry enters the transformer box 204, completing the suction of the slurry.

[0030] The remaining structure is the same as that in Example 1.

[0031] Example 3, referring to Figures 1-2 This is the third embodiment of the present invention, which differs from the second embodiment in that: a liquid outlet pipe 401 is installed at the lower end of the coating rod 2, the liquid outlet pipe 401 is located at the front end of the mounting strip 106, and the horizontal height of the lower end of the liquid outlet pipe 401 is higher than the horizontal height of the lower end of the coating blade 3. A liquid supply tank (not shown in the figure) is installed on the outer wall of the mounting side plate 1, and the liquid supply tank is connected to the liquid outlet pipe 401. One end of the transformer box 204 is fixedly connected to a return pipe (not shown in the figure), one end of the return pipe is fixedly connected to the inside of the liquid supply tank, and both the return pipe and the flow pipe 203 are fixedly installed with one-way valves (not shown in the figure), and the flow directions of the two one-way valves are opposite.

[0032] Specifically, the supply tank is used to store the slurry. The slurry inside is pumped to the outlet pipe 401 by a screw pump (shown in the figure) and flows evenly to the material surface through the outlet pipe 401, waiting for the coating blade 3 to coat it. The return pipe is used to re-input the slurry collected inside the transformer box 204 into the supply tank for recycling, preventing the waste of slurry.

[0033] During use, when coating is being performed, the supply tank delivers the slurry to the outlet pipe 401 via a screw pump. The outlet pipe 401 then evenly distributes the slurry above the material, ready for coating. Simultaneously, after the slurry is collected inside the transformer box 204, the slurry inside the transformer box 204 is pumped into the supply tank as the sliding plate 304 slides, facilitating secondary use.

[0034] The remaining structure is the same as that in Example 2.

[0035] Based on embodiments 1-3, the working principle of the present invention is as follows: When the coating equipment is started, during coating, the liquid supply tank delivers the slurry to the inside of the liquid outlet pipe 401 through a screw pump. The liquid outlet pipe 401 evenly flows the slurry above the material, waiting for coating. The drive motor drives the rotating column 101 to rotate through the drive end. The cam 102 on the outer wall of the rotating column 101 rotates synchronously, and the cam 102 is located inside the trigger ring 105. Every time the cam 102 rotates once, it will drive the trigger ring 105 to move horizontally away from the spring rod 104. During the displacement, the trigger ring 105 drives the cutting plate 107 to move horizontally synchronously. The cutting plate 107 cuts the slurry, so that the upper slurry is sucked away by the suction head 201, while the lower slurry is used for coating normally. After the cam 102 rotates once, the trigger ring 105 is reset under the elastic force of the spring rod 104, and the cutting plate 107 is reset synchronously, and the operation is repeated.

[0036] When the rotating column 101 rotates, it drives the unwinding shaft 301 to rotate synchronously via the transmission chain. During rotation, the control gear 307 at one end of the unwinding shaft 301 pulls the sliding plate 304 along the inside of the transformer box 204 via the connecting rod 306 at the upper end of the shaft 303. When the sliding plate 304 moves outward in the horizontal direction, the pressure inside the transformer box 204 decreases, and the slurry enters the transformer box 204, completing the slurry suction (the slurry suction and the cutting of the cutting plate 107 are carried out simultaneously). At the same time, after the slurry is collected inside the transformer box 204, as the sliding plate 304 slides, the slurry inside the transformer box 204 is pumped into the supply tank for secondary use.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A screw-pump precision coating device suitable for high-viscosity slurries, comprising two mounting side plates (1), a coating rod (2) disposed between the two mounting side plates (1), and a coating blade (3) disposed at the lower end of the coating rod (2), characterized in that, It also includes a circulation unit located at the lower end of the coating rod (2), the circulation unit including a liquid level control component and a suction component located between the coating rod (2) and the two mounting side plates (1); The liquid level control component includes a rotating column (101) disposed between two mounting side plates (1), a cam (102) disposed on the outer wall of the rotating column (101), a bearing plate (103) disposed on the side wall of the mounting side plate (1), a spring rod (104) disposed on the side wall of the bearing plate (103), a trigger ring (105) disposed at one end of the spring rod (104), the cam (102) being located inside the trigger ring (105), a mounting strip (106) disposed at the lower end of the coating rod (2), a cutting plate (107) slidably disposed within the mounting strip (106), a connecting plate (108) disposed between the cutting plate (107) and the upper end of the trigger ring (105), and a mating plate (109) disposed at the lower end of the coating rod (2). The suction component includes a suction head (201) disposed at the lower end of the coating rod (2). The suction head (201) is located between the coating blade (3) and the mounting strip (106). The horizontal height of the cutting plate (107) and the lower end of the coating blade (3) is higher than the height of the coating blade (3). A drive motor is fixedly installed on the outer side wall of the mounting side plate (1). The drive end of the drive motor is fixedly connected to one end of the rotating column (101).

2. The screw-pump precision coating equipment for high-viscosity slurries according to claim 1, characterized in that, The suction component also includes a liquid storage tank (202) disposed on the side wall of the coating rod (2), a flow pipe (203) disposed on the side wall of the liquid storage tank (202), and a transformer box (204) disposed on the outer wall of the mounting side plate (1). One end of the flow pipe (203) is fixedly connected to the corresponding transformer box (204).

3. The screw-pump precision coating equipment for high-viscosity slurries according to claim 2, characterized in that, An unwinding shaft (301) is rotatably mounted between the two mounting side plates (1), a conveyor belt (302) is sleeved between the two unwinding shafts (301), and a transformer assembly is installed between the unwinding shaft (301) and the transformer box (204).

4. The screw-pump precision coating equipment for high-viscosity slurries according to claim 3, characterized in that, The transformer assembly includes a control gear (307) disposed at one end of the unwinding shaft (301), a shaft (303) disposed on the outer wall of the control gear (307), a sliding plate (304) slidably disposed inside the transformer box (204), a mounting seat (305) disposed on the side wall of the sliding plate (304), and a connecting rod (306) disposed between the shaft (303) and the mounting seat (305).

5. The screw-pump precision coating equipment for high-viscosity slurries according to claim 4, characterized in that, A transmission chain is sleeved between the unwinding shaft (301) and the rotating column (101).

6. The screw-pump precision coating equipment for high-viscosity slurries according to claim 2, characterized in that, The lower end of the coating rod (2) is equipped with a liquid outlet pipe (401), which is located at the front end of the mounting strip (106), and the horizontal height of the lower end of the liquid outlet pipe (401) is higher than the horizontal height of the lower end of the coating blade (3).

7. The screw-pump precision coating equipment for high-viscosity slurries according to claim 6, characterized in that, A liquid supply tank is installed on the outer wall of the mounting side plate (1), and the liquid supply tank is connected to the liquid outlet pipe (401).

8. The screw-pump precision coating equipment for high-viscosity slurries according to claim 7, characterized in that, One end of the transformer box (204) is fixedly connected to a return pipe, and one end of the return pipe is fixedly connected to the inside of the liquid supply box. Both the return pipe and the flow pipe (203) are fixedly installed with one-way valves, and the flow directions of the two one-way valves are opposite.

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