Automatic feeding mechanism

Abstract

The utility model relates to the technical field of chemical production, and discloses an automatic feeding mechanism which comprises a storage tank, a feeding mechanism and a discharging mechanism. The filtering structure comprises a tray, a filter element and an air inflation pipe, the tray is fixedly installed in a cavity of the storage tank, the filter element is detachably installed at the top of the tray, the air inflation pipe is fixedly connected with the storage tank and extends into a cavity of the filter element, an electromagnetic valve is installed at a port of the air inflation pipe, and the air inflation pipe is connected with the air storage tank; gas in the gas storage tank is controlled by the electromagnetic valve to enter the gas filling pipe, high-pressure gas is fed into the cavity in the center of the filter element from the gas filling pipe, powder attached to the outer portion of the filter element is blown away in an instant pressurizing mode, then cleaning of the filter element is achieved, the probability that the filter element is blocked is reduced, and the filtering efficiency is guaranteed; according to the scheme, abrasion to the filter element is small, continuous scraping noise can be reduced, the structure is simple, and maintenance is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production, in particular to an automatic feeding mechanism. Background Art

[0002] For chemical production, the feeding step is essential. There are various feeding methods, and vacuum feeding is one of them.

[0003] The prior art discloses a vacuum powder feeder (publication number: CN210593448U), which includes a storage tank. A screen is slidably connected inside the storage tank, and the peripheral sides of the screen are all in contact with the side wall of the storage tank. A feed pipe is arranged at the top of the storage tank, and a discharge pipe is arranged at the bottom of the storage tank.

[0004] The prior art separates air and powder through a filter screen. In order to ensure the filtering effect of the filter screen, it is necessary to regularly clean the powder attached to the filter screen. The prior art uses a transmission method to cooperate with a block structure to continuously impact the filter screen, so that the powder on the filter screen is shaken off. The continuous impact method will damage the filter screen, and the continuous impact will also increase the running noise. Due to the elastic connection of the filter screen, it is necessary to consider the sealing problem between the filter screen and the storage pipe. Generally speaking, the structure is relatively complex, which is not conducive to later maintenance.

[0005] Therefore, we propose an automatic feeding mechanism. Summary of the Utility Model

[0006] The utility model mainly solves the technical problems existing in the above prior art, and provides an automatic feeding mechanism.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme. An automatic feeding mechanism includes:

[0008] A storage tank, which is a tank structure for forming negative pressure and sucking powder. A vacuum pipe is fixedly installed at the top of the storage tank, and the vacuum pipe is connected to a vacuum device. A feed pipe is fixedly installed on the side wall of the storage tank;

[0009] A filtering structure, which is arranged in the cavity of the storage tank for separating powder and gas. The filtering structure includes a tray, a filter element and an inflation pipe. The tray is fixedly installed in the cavity of the storage tank. The filter element is detachably installed on the top of the tray. The inflation pipe is fixedly connected to the storage tank and extends into the cavity of the filter element. An electromagnetic valve is installed at the port of the inflation pipe. The inflation pipe is connected to a gas storage tank, and the inflation pipe can inflate the cavity of the filter element to blow off the attached powder.

[0010] As a preferred embodiment of the present utility model, the tray forms a circular plate structure, the top surface of the tray is recessed downward to form an arc-shaped pit, the filter element is installed at the center position of the top of the tray and is connected to the vacuum tube, and the feed pipe is located below the tray.

[0011] As a preferred embodiment of the present utility model, a plurality of blanking grooves for air circulation are provided on the top surface of the tray, the tray is penetrated, and the powder can fall from the blanking grooves below the tray.

[0012] As a preferred embodiment of the present utility model, the filtering structure further includes a top cover and a bottom plate, the top cover and the bottom plate are respectively arranged at the upper and lower ends of the filter element, and the top cover and the bottom plate are locked by fasteners.

[0013] As a preferred embodiment of the present utility model, the bottom plate is fixedly connected to the tray, a plurality of threaded holes are provided on the top surface of the bottom plate, through holes are provided on the wall surface of the top cover, the fasteners are arranged in the through holes, the fasteners include bolts but are not limited to bolts, and the bolts are threadedly connected to the threaded holes.

[0014] As a preferred embodiment of the present utility model, both the top cover and the bottom plate are sealed annular plate structures, both ends of the filter element are respectively clamped into the cavities of the top cover and the bottom plate, the vacuum tube penetrates through the top cover and extends to the bottom of the top cover, and the charging tube penetrates through the tray and the bottom plate and extends to the top of the bottom plate.

[0015] As a preferred embodiment of the present utility model, the charging tube forms an L-shaped tube, an installation opening adapted to the charging tube is provided on the wall surface of the storage tank, and the charging tube passes through the installation opening and extends below the tray.

[0016] Beneficial effects

[0017] The present utility model provides an automatic feeding mechanism. It has the following beneficial effects:

[0018] 1. For this automatic feeding mechanism, by setting the tray and the filter element, specifically, the vacuum tube is directly opposite to the center position of the filter element and evacuates the chamber in the center of the filter element. Then, the powder and gas will pass through the filtration of the outer wall of the filter element. The powder will be blocked outside the filter element, and the gas will be inhaled into the cavity of the filter element and discharged from the vacuum tube, realizing the separation of powder and gas. However, as the use time goes by, some powder will adhere to the outer wall of the filter element, which will affect the filtration efficiency of the filter element. By controlling the gas in the gas storage tank to enter the charging tube through the solenoid valve, the high-pressure gas is sent into the chamber in the center of the filter element from the charging tube, and the powder attached to the outside of the filter element is blown off by the way of instant pressurization, thus realizing the cleaning of the filter element, reducing the probability of filter element blockage, ensuring the filtration efficiency. Compared with the prior art that uses the scraping method, this solution has less wear on the filter element, can reduce the noise of continuous scraping, has a simple structure and is easy to maintain.

[0019] 2. The automatic feeding mechanism is provided with a detachable top cover and bottom plate. By loosening the bolts, the top cover can be separated from the bottom plate, and the filter element can be removed for replacement, which is convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 One of the overall three-dimensional views of the present utility model;

[0021] Figure 2 Another overall three-dimensional view of the present utility model;

[0022] Figure 3 Three-dimensional view of the filtering structure of the present utility model;

[0023] Figure 4 Three-dimensional view of the tray of the present utility model;

[0024] Figure 5 Schematic diagram of the installation of the charging pipe and the bottom plate of the present utility model.

[0025] Legend: 10, storage tank; 11, vacuum tube; 20, tray; 21, filter element; 22, charging pipe; 23, top cover; 24, bottom plate; 30, blanking chute. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] An automatic feeding mechanism, as Figure 1 and Figure 2 shown, includes:

[0027] A storage tank 10, which is a tank structure for forming negative pressure and sucking powder. A vacuum tube 11 is fixedly installed at the top of the storage tank 10, and the vacuum tube 11 is connected to a vacuum device. A feed pipe is fixedly installed on the side wall of the storage tank 10. Of course, a discharge pipe for discharging materials is provided at the bottom of the storage tank 10. The vacuum device can be a centrifugal fan. By evacuating the chamber of the storage tank 10 through the vacuum tube 11, air and powder are sucked into the storage tank 10 together through the feed pipe. After stopping the evacuation, the materials can be discharged from the discharge pipe, thereby realizing feeding. This is a known prior art and will not be elaborated here;

[0028] As Figure 2 , Figure 3 and Figure 4As shown, the filtering structure is arranged in the cavity of the storage tank 10 for separating powder and gas. The filtering structure includes a tray 20, a filter element 21 and an air charging tube 22. The tray 20 is fixedly installed in the cavity of the storage tank 10. The filter element 21 is detachably installed on the top of the tray 20. The air charging tube 22 is fixedly connected to the storage tank 10 and extends into the cavity of the filter element 21. A solenoid valve is installed at the port of the air charging tube 22. The air charging tube 22 is connected to the gas storage tank. The air charging tube 22 can charge and blow away the attached powder in the cavity of the filter element 21. The tray 20 is shaped The tray 20 has a circular plate structure, the top surface of the tray 20 is sunken downward to form an arc-shaped pit, the filter element 21 is installed at the center of the top of the tray 20 and is connected to the vacuum tube 11, the feed pipe is located below the tray 20, and the top surface of the tray 20 is provided with a plurality of drop grooves 30 for air circulation, which penetrate the tray 20, and the powder can fall from the drop grooves 30 to the bottom of the tray 20, the inflation tube 22 forms an L-shaped tube, and the wall surface of the storage tank 10 is provided with an installation port adapted to the inflation tube 22, and the inflation tube 22 passes through the installation port and extends to the bottom of the tray 20. In this solution, by setting the tray 20 and the filter element 21, specifically, the vacuum tube 11 is directly opposite to the center of the filter element 21 and evacuates the chamber in the center of the filter element 21, and then the powder and gas are filtered through the outer wall of the filter element 21, the powder is blocked outside the filter element 21, and the gas is sucked into the cavity of the filter element 21 and discharged from the vacuum tube 11, so as to achieve the separation of the powder and the gas. However, as the use time goes by, part of the powder will adhere to the outer wall of the filter element 21 and thus affect the filtering efficiency of the filter element 21. The gas in the gas storage tank is controlled by the solenoid valve. The body enters the inflation tube 22, and the high-pressure gas is sent from the inflation tube 22 into the chamber in the center of the filter element 21. The powder attached to the outside of the filter element 21 is blown away by instantaneous pressurization, thereby cleaning the filter element 21, reducing the probability of clogging of the filter element 21, and ensuring the filtration efficiency. Compared with the scraping method adopted in the prior art, this solution causes less wear on the filter element 21 and can reduce the noise of continuous scraping. It has a simple structure and is easy to maintain. The solenoid valve can adopt the direct-acting solenoid valve disclosed in the prior art, and the specific model is not restricted too much here.

[0029] like Figure 5As shown, the filtering structure further includes a top cover 23 and a bottom plate 24. The top cover 23 and the bottom plate 24 are respectively arranged at the upper and lower ends of the filter element 21. The top cover 23 and the bottom plate 24 are locked by fasteners. The bottom plate 24 is fixedly connected to the tray 20. A plurality of threaded holes are formed on the top surface of the bottom plate 24. A through hole is formed on the wall surface of the top cover 23. The fastener is arranged in the through hole. The fastener includes a bolt but is not limited to a bolt. The bolt is threadedly connected to the threaded hole. Both the top cover 23 and the bottom plate 24 are closed annular plate structures. The two ends of the filter element 21 are respectively clamped into the cavities of the top cover 23 and the bottom plate 24. The vacuum tube 11 penetrates through the top cover 23 and extends to the bottom of the top cover 23. The charging tube 22 penetrates through the tray 20 and the bottom plate 24 and extends to the top of the bottom plate 24. As a supplement to the above solution, by providing a detachable top cover 23 and bottom plate 24, by loosening the bolt, the top cover 23 can be separated from the bottom plate 24, and the filter element 21 can be removed for replacement, which is convenient for later maintenance. It should be noted that the top of the storage tank 10 is detachable to facilitate the replacement and maintenance of the components inside the storage tank 10. The top of the storage tank 10 can be locked to the storage tank 10 body by bolts to achieve sealing, and a gasket is also required to be provided between the top and the storage tank 10 body.

[0030] The working principle of the present utility model: The vacuum tube 11 is directly opposite to the central position of the filter element 21 and evacuates the chamber at the center of the filter element 21. Then, the powder and gas will pass through the filtration of the outer wall of the filter element 21. The powder will be blocked outside the filter element 21, and the gas will be inhaled into the cavity of the filter element 21 and discharged from the vacuum tube 11, realizing the separation of the powder and the gas. However, as the use time goes by, part of the powder will adhere to the outer wall of the filter element 21, thereby affecting the filtration efficiency of the filter element 21. By controlling the gas in the gas storage tank to enter the charging tube 22 through the solenoid valve, the high-pressure gas is sent into the chamber at the center of the filter element 21 from the charging tube 22, and the powder attached to the outside of the filter element 21 is blown off by the way of instant pressurization, thereby realizing the cleaning of the filter element 21 and reducing the probability of blockage of the filter element 21.

[0031] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic feeding mechanism, characterized in that, Including: A storage tank (10), a tank structure for forming a negative pressure and sucking powder. A vacuum tube (11) is fixedly installed at the top of the storage tank (10), and the vacuum tube (11) is connected to a vacuum device. A feed pipe is fixedly installed on the side wall of the storage tank (10). A filtering structure, arranged in the cavity of the storage tank (10) for separating powder and gas. The filtering structure includes a tray (20), a filter element (21) and an air charging pipe (22). The tray (20) is fixedly installed in the cavity of the storage tank (10). The filter element (21) is detachably installed on the top of the tray (20). The air charging pipe (22) is fixedly connected to the storage tank (10) and extends into the cavity of the filter element (21). An electromagnetic valve is installed at the port of the air charging pipe (22). The air charging pipe (22) is connected to an air storage tank, and the air charging pipe (22) can inflate the cavity of the filter element (21) to blow off the attached powder.

2. The automatic feeding mechanism according to claim 1, wherein: The tray (20) forms a circular plate structure. The top surface of the tray (20) is recessed downward to form an arc-shaped pit. The filter element (21) is installed at the central position on the top of the tray (20) and is connected to the vacuum tube (11). The feed pipe is located below the tray (20).

3. The automatic feeding mechanism according to claim 1, wherein: A plurality of blanking grooves (30) for air circulation are formed on the top surface of the tray (20), penetrating through the tray (20), and the powder can fall from the blanking grooves (30) below the tray (20).

4. The automatic feeding mechanism according to claim 1, wherein: The filtering structure further includes a top cover (23) and a bottom plate (24). The top cover (23) and the bottom plate (24) are respectively arranged at the upper and lower ends of the filter element (21), and the top cover (23) and the bottom plate (24) are locked by fasteners.

5. The automatic feeding mechanism according to claim 4, characterized in that: The bottom plate (24) is fixedly connected to the tray (20). A plurality of threaded holes are formed on the top surface of the bottom plate (24). A through hole is formed on the wall surface of the top cover (23). The fastener is arranged in the through hole. The fastener includes a bolt but is not limited to a bolt, and the bolt is threadedly connected to the threaded hole.

6. The automatic feeding mechanism according to claim 4, wherein: Both the top cover (23) and the bottom plate (24) are closed annular plate structures. The two ends of the filter element (21) are respectively clamped into the cavities of the top cover (23) and the bottom plate (24). The vacuum tube (11) penetrates through the top cover (23) and extends to the bottom of the top cover (23). The air charging pipe (22) penetrates through the tray (20) and the bottom plate (24) and extends to the top of the bottom plate (24).

7. The automatic feeding mechanism according to claim 1, characterized in that: The air charging pipe (22) forms an L-shaped pipe. An installation opening adapted to the air charging pipe (22) is formed on the wall surface of the storage tank (10), and the air charging pipe (22) passes through the installation opening and extends below the tray (20).

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