Vacuum feeding device for sodium hydroxide powder

Abstract

The utility model discloses a sodium hydroxide powder vacuum feeding device, and particularly relates to the technical field of vacuum feeding, the sodium hydroxide powder vacuum feeding device comprises a feeding tank, a sealing top cover is arranged outside the upper end of the feeding tank, a supporting sealing ring is arranged at the joint of the feeding tank and the end face of the sealing top cover, and a filtering supporting plate is arranged in the middle of the inner end face of the supporting sealing ring. A small vibration motor is arranged in the middle of the upper end of the filtering supporting plate; a filter is arranged on the outer side of the end face of the filtering supporting plate. During actual use, the filter can filter dust gas in the feeding tank under the corresponding arrangement state of the valve pipe, the filter supporting plate and the small vibration motor, so that the dust gas is prevented from entering the vacuum air pump, and the dust gas is prevented from entering the vacuum air pump. And meanwhile, the small vibration motor can drive the filter supporting plate and the filter to rapidly vibrate, so that dust accumulated on the surface of the filter is shaken off.

Description

Technical Field

[0001] This utility model relates to the field of vacuum feeding technology, and more specifically, to a vacuum feeding device for sodium hydroxide powder. Background Technology

[0002] Sodium hydroxide is an inorganic compound with strong alkalinity and extremely corrosive properties. It can be used as an acid neutralizer, complexing masking agent, precipitant, precipitation masking agent, color developer, saponifying agent, peeling agent, detergent, etc., and has a wide range of applications. When processing sodium hydroxide powder raw materials, vacuum feeding equipment is required to feed the powder. For example, the patent with prior art announcement number CN209367348U discloses a vacuum feeding device. When the vacuum generating mechanism is turned on, the air in the cavity is evacuated to a vacuum state. Under the action of negative pressure, the conveying pipe can suck up the powdered material. The material reaches the inside of the cavity through the conveying pipe. A filter is set on the upper part of the inner wall of the cavity to prevent material from being sucked in during the operation of the vacuum generating mechanism. A cleaning component set above the filter can clean the dust adhering to the filter. The cleaning component vibrates and flips during operation, thereby intermittently knocking the filter to achieve the purpose of cleaning the filter. The backflush air volume adjustment mechanism can adjust the amount of compressed air in the cavity to obtain a more stable negative pressure value so as to smoothly absorb the powdered material.

[0003] When the above-mentioned device is in operation, powdery material enters the cavity through the conveying pipe. The filter on the inner wall of the cavity is used to filter the material during the vacuuming process. The cleaning component rotates with the operation of the vacuum generating mechanism and collides with the filter, thereby cleaning the dust on the filter. The cleaning is done by the cleaning component colliding with the filter. The vibration generated by the collision can easily cause the feeding tank to resonate, resulting in a large dynamic load and noise when the feeding tank is working, which affects the working performance and service life of the feeding tank. This makes it inconvenient to clean the dust on the filter surface. At the same time, a single collision cannot quickly and effectively clean the dust on the filter surface. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a vacuum feeding device for sodium hydroxide powder. The technical problem to be solved by the present invention is: how to avoid resonance or shaking of the feeding tank when cleaning dust on the filter surface.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vacuum feeding device for sodium hydroxide powder, comprising a feeding tank, a sealed top cover provided on the outside of the upper end of the feeding tank, a supporting sealing ring provided at the contact point between the feeding tank and the sealing top cover, a filter support plate provided in the middle of the inner end face of the supporting sealing ring, and a small vibration motor provided in the middle of the upper end of the filter support plate.

[0006] A filter is provided on the outer side of the end face of the filter support plate, a shock-absorbing support pad is provided on the inner end face of the support sealing ring, and multiple support connecting pads are provided on both sides of the shock-absorbing support pad. A first concave fixing groove is opened on the outer side of the lower end of the filter support plate, and a second concave fixing groove is opened on the inner side of the upper end of the support sealing ring.

[0007] In a preferred embodiment, a valve pipe is provided on the outside of the lower end of the feeding tank, a feeding nozzle is provided on the outside of the lower end of the valve pipe, and a control box is provided on the outer end face of the feeding tank.

[0008] In a preferred embodiment, a discharge solenoid valve is provided on one side of the outer end face of the valve tube, a suction pipe is provided on one side of the outer end face of the feeding tank, and a vacuum tube and a pressure gauge are provided at the upper end of the sealing top cover.

[0009] In a preferred embodiment, the outer end faces of the connection points of the sealing top cover, the feeding tank, the valve pipe, and the feeding nozzle are all provided with limiting protrusions;

[0010] A concave sealing groove is provided on the inner side of the end face where the sealing top cover, feeding tank, valve pipe and feeding nozzle are connected.

[0011] In a preferred embodiment, a sealing gasket is provided on the end face of the connection between the sealing top cover, the feeding tank, the valve pipe and the feeding nozzle, and a sealing ring is provided on the inner end face of the sealing gasket;

[0012] The outer end face of the limiting protrusion is provided with a semi-ring locking clamp, and one side of the outer end face of the semi-ring locking clamp is provided with a movable hinge.

[0013] In a preferred embodiment, the outer end face of the semi-ring locking clamp is provided with a locking lug on the side away from the movable hinge, and a first pressure ring is provided on the outer side of the first concave fixing groove;

[0014] A second pressure ring is provided on the outer side of the second concave fixing groove, and multiple locking screws are provided on the outer end faces of both the first and second pressure rings.

[0015] In a preferred embodiment, the small vibration motor is electrically connected to the control box, the shock-absorbing support pad has an S-shaped cross-section in the main viewing direction, and the shock-absorbing support pad is a rubber component.

[0016] In a preferred embodiment, the control box is electrically connected to an external power source, the discharge solenoid valve is electrically connected to the control box, the vacuum tube is connected to an external vacuum pump, and the outer end face of the limiting protrusion is set in an inclined state.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] In actual use, the filter will filter the dust gas inside the feed tank by setting the valve pipe, filter support plate and small vibration motor in the corresponding state, thereby preventing the dust gas from entering the vacuum pump. At the same time, the small vibration motor will drive the filter support plate and filter to vibrate rapidly, thereby shaking off the dust accumulated on the surface of the filter.

[0019] Meanwhile, with the second pressure ring, the first pressure ring, the locking screw, the shock-absorbing support pad, and the support connecting pad in their corresponding configurations, the filter support plate and the support sealing ring can be connected through the shock-absorbing support pad, and the filter support plate can be supported through the shock-absorbing support pad. This also avoids the high-frequency resonance caused by the rapid vibration of the small vibration motor to the feeding tank, thereby preventing the feeding tank from generating large dynamic loads and noise during operation, which would affect the working performance and service life of the feeding tank. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the overall front view cross-sectional structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the valve pipe connection structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the cross-sectional connection structure of the supporting sealing ring of this utility model.

[0024] Figure 5 This utility model Figure 4 Enlarged view of section A.

[0025] The attached diagram is labeled as follows: 1. Feeding tank, 2. Suction pipe, 3. Control box, 4. Sealed top cover, 5. Pressure gauge, 6. Vacuum pipe, 7. Valve pipe, 8. Feeding nozzle, 9. Semi-ring locking clamp, 10. Discharge solenoid valve, 11. Limiting protrusion, 12. Movable hinge, 13. Locking lug, 14. Sealing gasket, 15. Filter support plate, 16. Support sealing ring, 17. Filter, 18. Small vibration motor, 19. Concave sealing groove, 20. Sealing ring, 21. Shock-absorbing support pad, 22. Support connecting pad, 23. Second pressure ring, 24. First pressure ring, 25. Locking screw, 26. First concave fixing groove, 27. Second concave fixing groove. Detailed Implementation

[0026] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this disclosure will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0027] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more exemplary embodiments. Numerous specific details are provided in the following description to give a full understanding of exemplary embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced with one or more of the specific details omitted, or other methods, components, steps, etc., can be employed. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0028] This invention provides a vacuum feeding device for sodium hydroxide powder, such as... Figure 1 , 2 As shown in Figure 3, the device includes a feeding tank 1, a sealing top cover 4 on the outside of the upper end of the feeding tank 1, a valve pipe 7 on the outside of the lower end of the feeding tank 1, and a feeding nozzle 8 on the outside of the lower end of the valve pipe 7.

[0029] The outer end face of the feeding tank 1 is provided with a control box 3, and one side of the outer end face of the valve pipe 7 is provided with a discharge solenoid valve 10. One side of the outer end face of the feeding tank 1 is provided with a suction pipe 2, which can suck external sodium hydroxide dust material into the interior of the feeding tank 1 through the suction pipe 2. The upper end of the sealing top cover 4 is provided with a vacuum tube 6 and a pressure gauge 5, which can detect the vacuum pressure inside the feeding tank 1 through the pressure gauge 5.

[0030] The outer end face of the connection between the sealing top cover 4, the feeding tank 1, the valve pipe 7 and the feeding nozzle 8 is provided with a limiting protrusion 11. The end face of the connection between the sealing top cover 4, the feeding tank 1, the valve pipe 7 and the feeding nozzle 8 is provided with a sealing gasket 14. The sealing gasket 14 can effectively increase the sealing performance when the sealing top cover 4, the feeding tank 1, the valve pipe 7 and the feeding nozzle 8 are connected.

[0031] The outer end face of the limiting protrusion 11 is provided with a semi-ring locking clamp 9. A movable hinge 12 is provided on one side of the outer end face of the semi-ring locking clamp 9. A locking lug 13 is provided on the side of the outer end face of the semi-ring locking clamp 9 away from the movable hinge 12. The limiting protrusion 11 can be locked and fixed by the semi-ring locking clamp 9, thereby facilitating the connection and disassembly of the feeding tank 1, the sealing top cover 4, the valve pipe 7 and the feeding nozzle 8.

[0032] The control box 3 is electrically connected to an external power source, and the discharge solenoid valve 10 is electrically connected to the control box 3. The control box 3 can control the discharge solenoid valve 10, thereby connecting the feeding tank 1 and the feeding nozzle 8, which facilitates the discharge of materials inside the feeding tank 1, thus enabling the feeding of sodium hydroxide powder. The vacuum tube 6 is connected to an external vacuum pump, which can extract air from inside the feeding tank 1, keeping the inside of the feeding tank 1 under vacuum. The outer end face of the limiting protrusion 11 is set in an inclined state.

[0033] like Figure 4 and 5 As shown, a support sealing ring 16 is provided at the joint between the end faces of the feeding tank 1 and the sealing top cover 4. A filter support plate 15 is provided in the middle of the inner end face of the support sealing ring 16. A small vibration motor 18 is provided in the middle of the upper end of the filter support plate 15, which can drive the filter support plate 15 to vibrate rapidly.

[0034] A filter 17 is provided on the outer side of the end face of the filter support plate 15. The filter 17 has a hollow cylindrical structure, providing a channel for gas flow. The edge part is made of ultra-fine glass fiber filter paper with very small pores. It adopts a very low filtration rate, which enhances the sieving and diffusion of small dust particles, thus having a high filtration efficiency. When the filter support plate 15 vibrates, it will drive the filter 17 to vibrate rapidly, thereby shaking off the sodium hydroxide powder accumulated on the surface of the filter 17, thus preventing excessive accumulation of sodium hydroxide powder on the outer end face of the filter 17 and affecting the filtration effect of the filter 17. The support sealing ring 16 The inner end face is provided with a shock-absorbing support pad 21. Both sides of the shock-absorbing support pad 21 are provided with multiple support connecting pads 22. The filter support plate 15 and the support sealing ring 16 can be connected through the shock-absorbing support pad 21, and the filter support plate 15 can also be supported through the shock-absorbing support pad 21. When the small vibration motor 18 drives the filter support plate 15 to vibrate rapidly, it can effectively prevent the vibration of the filter support plate 15 from causing resonance to the feeding tank 1, thereby avoiding the generation of large dynamic loads and noise when the feeding tank 1 is working, which would affect the working performance and service life of the feeding tank 1, and at the same time, preventing the failure and detachment of parts.

[0035] The filter support plate 15 has a first concave fixing groove 26 on the outer side of its lower end, the support sealing ring 16 has a second concave fixing groove 27 on the inner side of its upper end, and the sealing top cover 4, the feeding tank 1, the valve pipe 7 and the feeding nozzle 8 have a concave sealing groove 19 on the inner side of their end faces.

[0036] The inner end face of the sealing gasket 14 is provided with a sealing ring 20, the outer side of the first concave fixing groove 26 is provided with a first pressure ring 24, the outer side of the second concave fixing groove 27 is provided with a second pressure ring 23, and the outer end faces of the first pressure ring 24 and the second pressure ring 23 are each provided with a plurality of locking screws 25. The filter support plate 15 and the support sealing ring 16 can be connected and fixed by the corresponding arrangement of the second pressure ring 23, the first pressure ring 24 and the locking screws 25, thereby increasing the sealing performance and stability of the filter support plate 15 installation.

[0037] The small vibration motor 18 is electrically connected to the control box 3. The shock-absorbing support pad 21 has an S-shaped cross-section in the main viewing direction. The shock-absorbing support pad 21 is made of rubber. The operator drives the external vacuum pump through the control box 3. The vacuum pump will extract the air from the inside of the feeding tank 2, making the inside of the feeding tank 1 a vacuum. Then, the vacuum pump is stopped and the valve at the connection between the suction pipe 2 and the external sodium hydroxide tank is opened. The negative pressure generated by the vacuum inside the feeding tank 1 will quickly suck the sodium hydroxide powder into the inside of the feeding tank 1. After the suction is completed, the discharge solenoid valve 10 can be opened, and the dust material inside the feeding tank 10 will be discharged from the inside of the valve pipe 7 and the feeding nozzle 8.

[0038] Finally, it should be noted that: the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vacuum feeding device for sodium hydroxide powder, comprising a feeding tank (1), characterized in that: The upper end of the feeding tank (1) is provided with a sealing top cover (4), and a support sealing ring (16) is provided at the joint between the end faces of the feeding tank (1) and the sealing top cover (4). A filter support plate (15) is provided in the middle of the inner end face of the support sealing ring (16), and a small vibration motor (18) is provided in the middle of the upper end of the filter support plate (15). A filter (17) is provided on the outer side of the end face of the filter support plate (15), a shock-absorbing support pad (21) is provided on the inner end face of the support sealing ring (16), and multiple support connecting pads (22) are provided on both sides of the shock-absorbing support pad (21). A first concave fixing groove (26) is opened on the outer side of the lower end of the filter support plate (15), and a second concave fixing groove (27) is opened on the inner side of the upper end of the support sealing ring (16).

2. The sodium hydroxide powder vacuum feeding device according to claim 1, characterized in that: The lower end of the feeding tank (1) is provided with a valve pipe (7), the lower end of the valve pipe (7) is provided with a feeding nozzle (8), and the outer end face of the feeding tank (1) is provided with a control box (3).

3. The sodium hydroxide powder vacuum feeding device according to claim 2, characterized in that: A discharge solenoid valve (10) is provided on one side of the outer end face of the valve tube (7), a suction pipe (2) is provided on one side of the outer end face of the feeding tank (1), and a vacuum tube (6) and a pressure gauge (5) are provided on the upper end of the sealing top cover (4).

4. The sodium hydroxide powder vacuum feeding device according to claim 2, characterized in that: Limiting protrusions (11) are provided on the outer end faces of the connection between the sealing top cover (4), the feeding tank (1), the valve pipe (7) and the feeding nozzle (8); A concave sealing groove (19) is provided on the inner side of the end face at the connection of the sealing top cover (4), the feeding tank (1), the valve pipe (7) and the feeding nozzle (8).

5. The sodium hydroxide powder vacuum feeding device according to claim 4, characterized in that: The sealing top cover (4), the feeding tank (1), the valve pipe (7) and the feeding nozzle (8) are provided with sealing gaskets (14) at their connection points, and the inner end face of the sealing gaskets (14) is provided with sealing rings (20). The outer end face of the limiting protrusion (11) is provided with a semi-ring locking clamp (9), and a movable hinge (12) is provided on one side of the outer end face of the semi-ring locking clamp (9).

6. The sodium hydroxide powder vacuum feeding device according to claim 5, characterized in that: The outer end face of the semi-ring locking clamp (9) is provided with a locking lug (13) on the side away from the movable hinge (12), and a first pressure ring (24) is provided on the outer side of the first concave fixing groove (26). The second concave fixing groove (27) is provided with a second pressure ring (23) on its outer side, and the outer end faces of the first pressure ring (24) and the second pressure ring (23) are provided with multiple locking screws (25).

Images