Vacuum feeding device

Abstract

The utility model relates to the technical field of material feeding, in particular to a vacuum feeding device which comprises a feeding storage tank, a flap valve, a filter element and a vacuum generator. The feeding storage tank is provided with a feeding port and a discharging port. The flap valve is rotatably arranged at the discharge port and can block the discharge port; the vacuum generator is arranged on the outer side wall of the second end of the feeding storage tank; the filter element is arranged on the inner side wall of the second end of the feeding storage tank; the outer side wall of the second end of the feeding storage tank is connected with an air storage bag through a control valve, and when the control valve is opened, the air storage bag can clean the filter element. When the control valve is opened, gas in the gas storage bag can blow the filter element, and the filter element generates certain vibration, so that substances such as dry powder attached to the filter element can be separated from the filter element, the cleaning effect on the filter element is achieved, the filter element is prevented from being blocked by the materials such as the dry powder, and the service life of the filter element is prolonged. And further, the efficiency of vacuumizing the feeding storage tank by the vacuum generator subsequently is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material feeding, in particular to a vacuum feeding device. Background Art

[0002] Continuous vacuum belt dryers are usually equipped with vacuum feeders. Most of the Chinese medicine extracts contain sugars, which are hygroscopic materials. After absorbing moisture, they tend to become sticky, which can cause adhesion to the filter element of the feeder, resulting in poor vacuuming and feeding. The filter elements in the feeders of common vacuum feeders or belt dryer manufacturers on the market are easily clogged by hygroscopic materials, thus affecting normal production. Utility Model Content

[0003] In view of the above problems existing in the prior art, the utility model provides a vacuum feeding device.

[0004] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0005] A vacuum feeding device, comprising a feeding storage tank, a flap valve, a filter element and a vacuum generator; the feeding storage tank is provided with a feeding port, and the first end of the feeding storage tank close to the atmospheric pressure storage tank is provided with a discharge port; the flap valve is rotatably arranged at the discharge port and can block the discharge port; the vacuum generator is arranged on the outer side wall of the second end of the feeding storage tank to perform vacuum treatment on the feeding storage tank; the filter element is arranged on the inner side wall of the second end of the feeding storage tank;

[0006] An air storage bag is connected to the outer side wall of the second end of the feeding storage tank via a control valve. When the control valve is opened, the air storage bag can clean the filter element.

[0007] Preferably, the air storage bag is connected to an external air compressor to provide compressed gas to the air storage bag.

[0008] Preferably, a condenser is provided between the air compressor and the air storage bag, and a gas-liquid separator is provided between the condenser and the air storage bag.

[0009] Preferably, a heater is provided between the gas-liquid separator and the gas storage bag.

[0010] Preferably, the air storage bag achieves thermal insulation effect by means of electric heating and / or jacketing.

[0011] Preferably, a vibrator is provided at the loading tank.

[0012] Preferably, a level detection device is provided on the inner wall of the loading tank.

[0013] Preferably, the discharge port is connected to the inlet of the atmospheric pressure storage tank, and the flap valve is rotatably disposed in the atmospheric pressure storage tank.

[0014] Preferably, the discharge port of the atmospheric pressure storage tank is of a conical structure.

[0015] Preferably, the flap valve comprises a rotating plate and a sealing plate;

[0016] One end of the rotating plate is rotatably disposed on the inner side wall of the atmospheric pressure storage tank;

[0017] The sealing plate is detachably arranged on the rotating plate and is used to seal the discharge port.

[0018] The utility model has at least the following beneficial effects:

[0019] In the present application, when the control valve is opened, the gas in the gas storage bag can flow toward the first end of the feeding tank and have a blowing effect on the filter element, so that the gas can have a certain impact on the filter element and cause the filter element to vibrate to a certain extent, thereby allowing the dry powder and other substances attached to the filter element to separate from the filter element and eventually fall on the first end of the feeding tank following the flow of the gas, thereby achieving a cleaning effect on the filter element and preventing the filter element from being blocked by dry powder and other materials, thereby improving the efficiency of the subsequent vacuum generator in vacuumizing the feeding tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a vacuum feeding device in some embodiments of the present application is shown;

[0021] Figure 2 Shows Figure 1 A partial enlarged view of point A in the middle.

[0022] The parts indicated by the numbers in the accompanying drawings are as follows:

[0023] 100, atmospheric pressure storage tank; 110, feed inlet; 120, discharge port; 200, loading storage tank; 210, discharge port; 220, feed inlet; 230, filter element; 240, vibrator; 300, flap valve; 310, rotating plate; 320, sealing plate; 400, vacuum generator; 500, gas storage bag; 510, valve; 600, pipeline; 700, condenser; 800, gas-liquid separator; 810, inlet; 820, outlet; 830, drain; 900, heater. DETAILED DESCRIPTION

[0024] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.

[0025] like Figure 1-2 As shown, the present embodiment provides a vacuum feeding device, which includes a feeding tank 200 arranged above the atmospheric pressure tank 100, and a discharge port 210 is arranged on the first end of the feeding tank 200 close to the atmospheric pressure tank 100, and the position of the discharge port 210 corresponds to the position of the feed port 110 of the atmospheric pressure tank 100, and a feed port 220 is also arranged on the feeding tank 200, through which dry powder and other materials can be transported to the feeding tank 200, and the feeding tank 200 then transports the dry powder and other materials to the atmospheric pressure tank 100 through the discharge port 210. A rotatable flap valve 300 is also provided at the discharge port 210 of the loading tank 200; when the flap valve 300 is opened, the dry powder and other materials in the loading tank 200 can be transported to the atmospheric pressure tank 100 under the action of gravity; when the flap valve 300 is closed, the flap valve 300 can seal the discharge port 210. A vacuum generator 400 is provided on the outer wall of the second end of the loading tank 200, that is, on the top of the loading tank 200. The vacuum generator 400 can be a vacuum pump or other device. The vacuum generator 400 is specifically connected to the loading tank 200. When the vacuum generator 400 is working, it cooperates with the flap valve 300 to seal the discharge port 210, so as to realize the vacuum operation of the loading tank 200. A filter element 230 is provided on the inner side wall of the second end of the loading tank 200. When the vacuum generator 400 performs a vacuum operation on the loading tank 200, the filter element 230 can filter the gas extracted by the vacuum generator 400 to prevent dry powder materials and the like from being extracted from the loading tank 200 by the vacuum generator 400.

[0026] Furthermore, in this embodiment, a gas storage bag 500 is provided on the outer side wall of the second end of the loading tank 200, in which gas is stored, and the gas storage bag 500 is connected to the loading tank 200 via a control valve (not shown in the figure). When the control valve is opened, the gas storage bag 500 and the loading tank 200 can be connected, and when the control valve is closed, the gas storage bag 500 and the loading tank 200 can be disconnected. Specifically, when it is necessary to evacuate the loading tank 200, first close the flap valve 300 so that the flap valve 300 seals the discharge port 210, and then open the control valve to connect the gas bag 500 with the loading tank 200, and the gas in the gas bag 500 flows into the loading tank 200. During this process, the gas in the gas bag 500 can flow toward the first end of the loading tank 200, and has a blowing effect on the filter element 230, thereby cleaning the filter element 230. Finally, close the control valve and open the vacuum generator 400 so that the vacuum generator 400 evacuates the loading tank 200.

[0027] It can be understood that when the control valve is opened, since the gas in the gas storage bag 500 can flow toward the first end of the loading tank 200 and has a blowing effect on the filter element 230, the gas can have a certain impact on the filter element 230 and cause the filter element 230 to vibrate to a certain extent, thereby allowing the dry powder and other substances attached to the filter element 230 to separate from the filter element 230 and eventually fall on the first end of the loading tank 200 following the flow of the gas, thereby achieving a cleaning effect on the filter element 230 and preventing the filter element 230 from being blocked by dry powder and other materials, thereby improving the efficiency of the subsequent vacuum generator 400 in vacuuming the loading tank 200.

[0028] In some embodiments, the vacuum loading device of this embodiment also includes an air compressor (not shown in the figure), which is also an air compressor. The air compressor is connected to the air storage bag 500 through a pipeline 600. When the air compressor is working, it can provide compressed gas to the air storage bag 500.

[0029] Specifically, compressed gas provided by an air compressor is stored in the gas storage bag 500; it is understandable that, since the gas in the gas storage bag 500 is compressed gas, the air pressure in the gas storage bag 500 is greater than the air pressure in the loading tank 200; before the vacuum generator 400 performs a vacuum treatment on the loading tank 200, the flap valve 300 is closed so that the discharge port 210 is sealed, and then the control valve is opened. At this time, the high-pressure gas in the gas storage bag 500 will instantly rush out into the loading tank 200, so that a certain impact force is formed on the filter element 230, and the filter element 230 is vibrated to a certain extent, so that the filter element 230 is The dry powder and other materials can be separated from the filter element 230. Since the direction in which the high-pressure gas rushes out of the gas storage bag 500 is toward the first end of the loading tank 200, the gas can drive the dry powder and other materials separated from the filter element 230 to fall into the first end of the loading tank 200, thereby better cleaning the filter element 230 and preventing the filter element 230 from being blocked by the dry powder and other materials. After that, the control valve is closed and the vacuum generator 400 is turned on, so that the vacuum generator 400 can better vacuum the loading tank 200, thereby improving the efficiency of the vacuum generator 400 in vacuuming the loading tank 200.

[0030] In particular, by storing compressed gas in the air storage bag 500, a certain air pressure difference can exist between the air storage bag 500 and the loading tank 200. When the control valve is opened in this state, the compressed gas in the air storage bag 500 can have a better impact force, and can form a strong impact on the filter element 230, so as to better separate the dry powder and other materials attached to the filter element 230, thereby improving the cleaning effect of the filter element 230.

[0031] Furthermore, in order to save costs and prevent the air compressor from working all the time, a valve 510 is provided between the pipeline 600 and the air storage bag 500. After the air compressor provides sufficient compressed gas to the air storage bag 500, the valve 510 is closed, and the air compressor can be turned off at this time. After the air storage bag 500 cleans the filter element 230, the valve 510 and the air compressor are opened again, so that the air compressor replenishes compressed gas to the air storage bag 500. Furthermore, the gas in the air storage bag 500 can also be vented through the valve 510.

[0032] In some embodiments, a condenser 700 is provided on the pipeline 600 between the air compressor and the air storage bag 500 , and a gas-liquid separator 800 is provided on the pipeline 600 between the condenser 700 and the air storage bag 500 .

[0033] When the air compressor provides compressed gas to the air storage bag 500, the compressed gas provided by the air compressor will first enter the condenser 700 in the pipeline 600. The condenser 700 can cool the compressed gas so that the moisture in the compressed gas forms condensed water. Then, the compressed gas and the condensed water enter the gas-liquid separator 800 through the pipeline 600. The condensed water can be separated in the gas-liquid separator 800, and the dry compressed gas can enter the air storage bag 500 through the pipeline 600.

[0034] It can be understood that the gas-liquid separator 800 has an inlet 810, an outlet 820 and a drain port 830, and the compressed gas and condensed water enter the gas-liquid separator 800 through the inlet 810, wherein the condensed water is discharged outward through the drain port 830, and the dry compressed gas enters the gas storage bag 500 through the outlet 820.

[0035] By setting the condenser 700 and the gas-liquid separator 800, the moisture of the compressed gas provided by the air compressor can be preferably removed, so that the compressed gas entering the gas storage bag 500 has better dryness. When the control valve is opened, when the compressed gas is cleaning the filter element 230, since the compressed gas has removed the moisture therein, the dry powder and other materials on the filter element 230 and in the feeding storage tank 200 will not absorb moisture, and the dry powder and other materials on the filter element 230 and in the feeding storage tank 200 can be kept dry, and the dry powder and other materials can be prevented from absorbing water and becoming sticky, which can better improve the effect of the compressed gas cleaning the filter element 230.

[0036] In some embodiments, a heater 900 is provided on the pipe 600 between the gas-liquid separator 800 and the gas storage bag 500. When the air compressor provides compressed gas to the gas storage bag 500, the compressed gas with moisture removed enters the heater 900 from the outlet 820 of the gas-liquid separator 800 through the pipe 600, so that the compressed gas enters the gas storage bag 500 after being heated in the heater 900.

[0037] It can be understood that by heating the compressed gas in the heater 900, the moisture in the compressed gas can be further removed, so that the compressed gas remains dry, and by heating, the compressed gas can be further expanded, which can better increase the air pressure in the air storage bag 500, strengthen the impact force of the compressed gas on the filter element 230, and thereby improve the cleaning effect of the filter element 230.

[0038] In some embodiments, the air storage bag 500 can have a better insulation effect through electric heating and / or jacketing, thereby keeping the compressed gas in the air storage bag 500 dry. At the same time, the constant temperature can also better keep the air pressure in the air storage bag 500 constant, so that the air storage bag 500 can better clean the filter element 230.

[0039] In particular, when the heat preservation effect of the air storage bag 500 is achieved by electric heating, the temperature in the air storage bag 500 can be adjusted by changing the power of the electric heating. According to the principle of thermal expansion and contraction, the staff can adjust the temperature in the air storage bag 500 to adjust the air pressure in the air storage bag 500, and finally adjust the impact force of the compressed gas on the filter element 230, which is more flexible and easy to use.

[0040] In some embodiments, a vibrator 240 is provided on the loading tank 200. When the vibrator 240 is turned on, the entire loading tank 200 can be vibrated, and the vibration of the loading tank 200 can drive the vibration of the filter element 230, thereby enabling the dry powder and other materials attached to the filter element 230 and the side wall of the loading tank 200 to be detached through the vibration, so that the dry powder and other materials fall on the first end of the loading tank 200.

[0041] It is understandable that the provision of the vibrator 240 can better clean the filter element 230 and the side wall of the feeding tank 200, thereby avoiding the adhesion of materials such as dry powder.

[0042] In some embodiments, a level detection device (not shown in the figure) is provided on the inner wall of the loading tank 200. The level detection device is a sensor, and the level detection device can be used to detect the height of dry powder or other materials in the loading tank 200, so as to provide feedback to the staff on the amount of dry powder or other materials in the loading tank 200 for easy use.

[0043] In some embodiments, the discharge port 210 of the loading tank 200 is connected to the inlet port 110 of the atmospheric pressure tank 100, so that the dry powder and other materials in the loading tank 200 can be preferably entered into the atmospheric pressure tank 100, thereby realizing the transportation of the dry powder and other materials. Further, the flap valve 300 is rotatably disposed in the atmospheric pressure tank 100, and specifically, the flap valve 300 is rotatably disposed on the inner side wall of the atmospheric pressure tank 100.

[0044] In some embodiments, the discharge port 120 provided at the bottom of the atmospheric pressure storage tank 100 relative to the feed port 110 is provided with a conical structure, which can better collect or gather the dry powder and other materials entering the atmospheric pressure storage tank 100 from the loading storage tank 200. The discharge port 120 with a conical structure can also play a guiding role during unloading, facilitating the discharge of dry powder and other materials in the atmospheric pressure storage tank 100, thereby improving work efficiency.

[0045] In some embodiments, the flap valve 300 includes a rotating plate 310 and a sealing plate 320, wherein one end of the rotating plate 310 is rotatably disposed on the inner wall of the atmospheric pressure storage tank 100, and the sealing plate 320 is detachably installed on the rotating plate 310 by bolts, so that the sealing plate 320 can rotate synchronously with the rotating plate 310, and the rotation of the rotating plate 310 can better drive the sealing plate 320 to seal the discharge port 210, so that the vacuum generator 400 can realize the vacuum treatment of the loading storage tank 200.

[0046] Furthermore, in order to improve the sealing effect of the sealing plate 320 on the discharge port 210, a sealing ring (not shown in the figure) is also arranged between the sealing plate 320 and the discharge port 210. When the flap valve 300 is in a closed state, the sealing plate 320 can be pressed onto the discharge port 210 through the sealing ring, thereby improving the sealing effect of the sealing plate 320 on the discharge port 210.

[0047] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A vacuum feeding device, characterized in that: It includes a feeding tank, a flap valve, a filter element and a vacuum generator; the feeding tank is provided with a feeding port, and the first end of the feeding tank close to the atmospheric pressure tank is provided with a discharging port; the flap valve is rotatably arranged at the discharging port and can block the discharging port; the vacuum generator is arranged on the outer side wall of the second end of the feeding tank to perform vacuum treatment on the feeding tank; the filter element is arranged on the inner side wall of the second end of the feeding tank; An air storage bag is connected to the outer side wall of the second end of the feeding storage tank via a control valve. When the control valve is opened, the air storage bag can clean the filter element.

2. The vacuum feeding device according to claim 1, characterized in that: The air storage bag is connected to an external air compressor to provide compressed gas to the air storage bag.

3. The vacuum feeding device according to claim 2, characterized in that: A condenser is provided between the air compressor and the air storage bag, and a gas-liquid separator is provided between the condenser and the air storage bag.

4. The vacuum feeding device according to claim 3, characterized in that: A heater is provided between the gas-liquid separator and the gas storage bag.

5. The vacuum feeding device according to claim 4, characterized in that: The gas storage bag achieves heat preservation effect by means of electric heating and / or jacketing.

6. The vacuum feeding device according to any one of claims 1 to 4, characterized in that: A vibrator is provided at the feeding storage tank.

7. The vacuum feeding device according to any one of claims 1 to 4, characterized in that: A level detection device is provided on the inner side wall of the feeding storage tank.

8. The vacuum feeding device according to claim 1, characterized in that: The discharge port is connected to the feed port of the atmospheric pressure storage tank, and the flap valve is rotatably arranged in the atmospheric pressure storage tank.

9. The vacuum feeding device according to claim 8, characterized in that: The discharge port of the atmospheric pressure storage tank is in a conical structure.

10. The vacuum feeding device according to claim 8, characterized in that: The flap valve comprises a rotating plate and a sealing plate; One end of the rotating plate is rotatably disposed on the inner side wall of the atmospheric pressure storage tank; The sealing plate is detachably arranged on the rotating plate and is used to seal the discharge port.

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