Mine non-pressure air door air source stabilizing device and air door

Abstract

The invention belongs to the technical field of air doors, and particularly discloses a mine non-pressure air door air source stabilizing device and an air door. The mine non-pressure air door air source stabilizing device comprises a filter, a booster pump and a high-pressure air cylinder which are sequentially communicated along an airflow conveying path, an air inlet of the filter is connected with an air outlet of an air inlet pipeline, and an air outlet of the high-pressure air cylinder is connected with an air door driving device so as to provide an air source for a pneumatic driving device. According to the mine non-pressure air door air source stabilizing device, a stable air source can be supplied, and the operation stability of an air door can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of air doors, and in particular relates to an air source stabilizing device for a mine pressure-free air door and an air door. Background Art

[0002] The pneumatic damper in coal mines is an automatic pressure-free damper that uses air as power. Usually, the air supply valve is opened to supply air to the power cylinder of the damper pneumatic drive device. The power cylinder expands and contracts under the action of air pressure, driving the driving connecting rod of the damper pneumatic drive device to move and realize the damper opening and closing. In the underground environment, there are dust pollutants mainly composed of coal ash in the compressed air pipeline, and some low-lying areas often have condensed water in the compressed air pipeline, which will cause fluctuations and pollution of the air source, and then cause the damper to operate. The power is blocked and cannot work normally. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, an embodiment of the present invention provides a mine pressure-free damper air source stabilization device, which can supply a stable air source and improve the stability of the pressure-free damper operation.

[0004] An embodiment of the present invention further provides a damper.

[0005] The air source stabilization device for a mine unpressurized damper in an embodiment of the present invention comprises a filter, a booster pump and a high-pressure gas cylinder which are sequentially connected along the conveying path of the air flow, the air inlet of the filter is connected to the air outlet of the air inlet pipeline, and the air outlet of the high-pressure gas cylinder is connected to the pneumatic drive device of the damper to provide an air source to the pneumatic drive device.

[0006] It can be understood that the gas enters the filter through the air intake pipe, and after the water, dust, etc. in the gas are filtered out by the filter, it is pressurized by the booster pump, and the pressurized gas is transported to the high-pressure gas cylinder, and then the gas in the high-pressure gas cylinder is transported to the pneumatic drive device, which can provide the pneumatic drive device with stable pressure and cleaner gas, thereby facilitating the pneumatic drive device to stably drive the damper switch.

[0007] In this embodiment, the mine unpressurized damper air source stabilization device also includes a first valve, the air inlet of the first valve is connected to the air outlet of the filter, and the air outlet of the first valve is connected to the air inlet of the booster pump.

[0008] In this embodiment, the mine unpressurized damper air source stabilization device also includes a cleaning tube group, the air inlet of the cleaning tube group is connected to the air outlet of the high-pressure gas cylinder, and the air outlet end of the cleaning tube group is arranged between the inner wall of the filter cylinder and the outer wall of the filter element.

[0009] In this embodiment, the cleaning pipe set includes a first cleaning pipeline, which is spirally wound around the inner wall of the cylinder, and the portion of the first cleaning pipeline located in the filter is provided with a first air outlet facing the bottom of the filter.

[0010] In this embodiment, the cleaning pipe set also includes a second cleaning pipeline, which is spirally wound around the outer wall of the filter element, and the part of the second cleaning pipeline located inside the filter is provided with a second air outlet facing the bottom of the filter.

[0011] In this embodiment, the mine unpressured damper air source stabilization device further includes a second valve, which is arranged between the air outlet of the booster pump and the air inlet of the cleaning pipe group.

[0012] In this embodiment, the mine unpressurized air gate air source stabilization device also includes a third valve, which is a reversing valve. The third valve is connected to the booster pump, the cleaning pipe group and the high-pressure gas cylinder respectively, and the third valve has three working positions: a first working position, a second working position and a third working position. In the first working position, the gas output by the booster pump enters the high-pressure gas cylinder through the third valve, and in the second working position, the gas output by the high-pressure gas cylinder enters the filter through the third valve. In the third working position, the passage between the booster pump and the high-pressure gas cylinder is closed, and the passage between the high-pressure gas cylinder and the cleaning pipe group is closed.

[0013] In this embodiment, the mine unpressurized damper air source stabilization device also includes a pressure stabilizing component, the air inlet of the pressure stabilizing component is connected to the air outlet of the high-pressure gas cylinder, and the air outlet of the pressure stabilizing component is connected to the air inlet of the pneumatic drive device.

[0014] In this embodiment, the pressure stabilizing component includes a pressure sensor, a fourth valve and a fifth valve which are arranged in sequence along the conveying path. The pressure sensor is used to obtain the pressure information of the gas output by the high-pressure gas cylinder, the fourth valve is used to open and close the pipeline, and the fifth valve is used to adjust the pipeline pressure according to the pressure information.

[0015] The damper in this embodiment includes the above-mentioned mine unpressurized damper air source stabilizing device, a pneumatic drive device and a damper body. The air inlet of the pneumatic drive device is connected to the air outlet of the mine unpressurized damper air source stabilizing device, and the damper body is connected to the pneumatic drive device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a principle diagram of a mine pressure-free damper air source stabilizing device according to an embodiment of the present invention.

[0017] Reference numerals:

[0018] 1. Filter; 2. Booster pump; 3. High-pressure gas cylinder; 4. First valve; 5. Second valve; 6. Cleaning pipe group; 61. First cleaning pipeline; 62. Second cleaning pipeline; 7. Third valve. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0020] In this embodiment, if Figure 1 As shown, the mine unpressurized damper air source stabilization device includes a filter 1, a booster pump 2 and a high-pressure gas cylinder 3 which are sequentially connected along the air flow conveying path, the air inlet of the filter 1 is connected to the air outlet of the air inlet pipeline, and the air outlet of the high-pressure gas cylinder 3 is connected to the pneumatic drive device of the damper to provide an air source to the pneumatic drive device.

[0021] It can be understood that the gas enters the filter 1 through the air intake pipe, and after the water, dust, etc. in the gas are filtered out by the filter 1, the gas is pressurized by the booster pump 2, and the pressurized gas is transported to the high-pressure gas cylinder 3, and then the gas in the high-pressure gas cylinder 3 is transported to the pneumatic drive device, which can provide the pneumatic drive device with stable pressure and cleaner gas, thereby facilitating the pneumatic drive device to stably drive the damper switch.

[0022] In this embodiment, if Figure 1 As shown, the mine unpressurized air door air source stabilization device also includes a first valve 4, the air inlet of the first valve 4 is connected to the air outlet of the filter 1, and the air outlet of the first valve 4 is connected to the air inlet of the booster pump 2.

[0023] For example, the first valve 4 is an electric valve, and the first valve 4 is set as an electric valve, so that the first valve 4 can be quickly opened or closed. Of course, the first valve 4 can also be set as other types of valves, as long as it is convenient to control the on and off between the filter 1 and the booster pump 2, and there is no limitation here.

[0024] It should be noted that, by providing the first valve 4, the on-off of the pipeline between the filter 1 and the booster pump 2 can be controlled by the first valve 4. When it is necessary to deliver gas to the booster pump 2 through the filter 1, the filter 1 and the booster pump 2 can be connected by opening the first valve. When it is not necessary to deliver gas to the booster pump 2, the filter 1 and the booster pump 2 can be disconnected by closing the first valve 4, which is convenient for control.

[0025] In this embodiment, if Figure 1As shown, the mine unpressurized air gate air source stabilization device also includes a cleaning tube group 6, the air inlet of the cleaning tube group 6 is connected to the air outlet of the high-pressure gas cylinder 3, and the air outlet end of the cleaning tube group 6 is arranged between the inner wall of the cylinder of the filter 1 and the outer wall of the filter element of the filter 1, so as to back-blow the stains between the inner wall of the cylinder and the filter element through the cleaning tube group 6.

[0026] Specifically, a sewage outlet is provided at the bottom of the filter 1 , and impurities in the filter 1 can be discharged through the sewage outlet at the bottom of the filter 1 .

[0027] It is understandable that by providing the cleaning tube group 6, and connecting one end of the cleaning tube group 6 to the high-pressure gas cylinder 3, and the other end to between the inner wall of the cylinder of the filter 1 and the filter element, the high-pressure gas cylinder 3 can supply gas to the cleaning tube group 6, and the dirt between the inner wall of the cylinder of the filter 1 and the outer wall of the filter element of the filter 1 can be back-blown to the bottom of the filter 1 through the cleaning tube group 6, and then the dirt can be discharged through the sewage outlet at the bottom of the filter 1. By providing the cleaning tube group 6, the filter 1 can be cleaned regularly, the filtering effect of the filter 1 can be improved, and it is beneficial to further ensure the stability of the gas source delivered to the pneumatic drive device.

[0028] In this embodiment, if Figure 1 As shown, the cleaning pipe set 6 includes a first cleaning pipeline 61, which is spirally wound around the inner wall of the cylinder, and the portion of the first cleaning pipeline 61 located inside the filter 1 is provided with a first air outlet facing the bottom of the filter 1.

[0029] Specifically, one end of the first cleaning pipeline 61 located in the air of the filter 1 is arranged in a spiral shape, and a plurality of first air outlets are arranged at intervals on the conveying path of the first cleaning pipeline 61, so that the inner wall of the cylinder can be back-blown and cleaned through the first air outlets in the circumferential direction. The plurality of first air outlets can be evenly distributed, which is conducive to making the back-blowing airflow more uniform, thereby cleaning the filter 1 more uniformly.

[0030] It can be understood that when the filter 1 is cleaned through the first cleaning pipeline 61, gas is supplied to the first cleaning pipeline 61 through the high-pressure gas cylinder 3, and the first cleaning pipeline 61 is spirally wound along the inner wall of the cylinder of the filter 1, so that the stains on the circumferential inner wall of the cylinder of the filter 1 can be cleaned. The outlet of the first air outlet on the first cleaning pipeline 61 faces the bottom of the filter 1, so that the stains at the bottom of the filter 1 can be discharged through the sewage outlet at the bottom of the filter 1.

[0031] In this embodiment, if Figure 1 As shown, the cleaning pipe set 6 also includes a second cleaning pipe 62, which is spirally wound around the outer wall of the filter element, and the part of the second cleaning pipe 62 located in the filter 1 is provided with a second air outlet facing the bottom of the filter 1.

[0032] Specifically, the second cleaning pipeline 62 is arranged in a spiral shape at one end of the filter 1, and a plurality of second air outlets are arranged at intervals on the conveying path of the second cleaning pipeline 62, so that the outer wall of the filter element can be back-blown and cleaned through the second air outlets in the circumferential direction. The plurality of second air outlets can be evenly distributed, which is conducive to making the back-blowing airflow more uniform, thereby cleaning the filter 1 more uniformly.

[0033] It is understandable that when the filter 1 is cleaned through the second cleaning pipeline 62, the high-pressure gas cylinder 3 supplies gas to the second cleaning pipeline 62, and the second cleaning pipeline 62 is spirally wound along the outer wall of the filter element of the filter 1, so that the stains on the outer wall of the filter element of the filter 1 can be cleaned, and the outlet of the second air outlet on the second cleaning pipeline 62 is toward the bottom of the filter 1, so as to discharge the stains at the bottom of the filter 1 through the sewage outlet at the bottom of the filter 1. In addition, the air outlet is set on the inner wall of the cylinder of the filter 1 and the outer wall of the filter element for backblowing, which can improve the cleaning effect of the filter 1, thereby ensuring the filtering effect of the filter 1.

[0034] In this embodiment, if Figure 1 As shown, the mine unpressured air door air source stabilization device also includes a second valve 5, which is arranged between the air outlet of the booster pump 2 and the air inlet of the cleaning pipe group 6.

[0035] For example, the second valve 5 is an electric valve, and the second valve 5 is set as an electric valve, so that the second valve 5 can be quickly opened or closed. Of course, the second valve 5 can also be set as other types of valves, as long as it is convenient to control the on and off between the booster pump 2 and the high-pressure gas cylinder 3, and there is no limitation here.

[0036] It can be understood that by setting the second valve 5 between the booster pump 2 and the air inlet of the cleaning tube group 6, when the high-pressure gas cylinder 3 supplies gas to the cleaning tube group 6, the second valve 5 is closed, which can prevent the gas in the high-pressure gas cylinder 3 from entering the booster pump 2, thereby protecting the booster pump 2 and helping to ensure the service life of the booster pump 2.

[0037] In this embodiment, if Figure 1 As shown, the mine unpressurized air gate gas source stabilization device also includes a third valve 7, which is a reversing valve. The third valve 7 is connected to the booster pump 2, the cleaning pipe group 6 and the high-pressure gas cylinder 3 respectively. The third valve 7 has three working positions: a first working position, a second working position and a third working position. In the first working position, the gas output by the booster pump 2 enters the high-pressure gas cylinder 3 through the third valve 7. In the second working position, the gas output by the high-pressure gas cylinder 3 enters the filter 1 through the third valve 7. In the third working position, the passage between the booster pump 2 and the high-pressure gas cylinder 3 is closed, and the passage between the high-pressure gas cylinder 3 and the cleaning pipe group 6 is closed.

[0038] Specifically, the third valve 7 is a three-position four-way valve, which includes four ports, P, A, B, and T, wherein the P port is connected to the water port of the booster pump 2, the A port is connected to the air inlet of the high-pressure gas cylinder 3, the B port is connected to the air outlet of the high-pressure gas cylinder 3, and the T port is connected to the air inlet of the cleaning tube group 6. In the first working position, the P port is connected to the A port, and the B port and the T port are closed. In the second working position, the B port is connected to the T port, and the P port and the A port are closed. In the third working position, the P port, the A port, the B port, and the T port are all closed.

[0039] The third valve 7 can be an electric reversing valve, so that the third valve 7 can respond quickly. Of course, the third valve 7 can also be set to other types of valves, which are not limited here.

[0040] It can be understood that the third valve 7 is connected to the booster pump 2, the cleaning tube group 6 and the high-pressure gas cylinder 3. When the gas filtered by the filter 1 needs to be transported to the high-pressure gas cylinder 3, the third valve 7 is switched to the first working position; when the filter 1 needs to be cleaned, the high-pressure gas cylinder 3 and the cleaning tube group 6 are connected, and gas is supplied to the cleaning tube group 6 through the high-pressure gas cylinder 3.

[0041] In this embodiment, the damper also includes a pressure stabilizing assembly (not shown in the figure), the air inlet of the pressure stabilizing assembly is connected to the air outlet of the high-pressure gas cylinder 3, and the air outlet of the pressure stabilizing assembly is connected to the air inlet of the pneumatic drive device.

[0042] It is understandable that by providing a pressure stabilizing assembly at the outlet of the high-pressure gas cylinder 3, the gas pressure supplied to the pneumatic drive device is further stabilized, which is conducive to the stable operation of the pneumatic drive device and further ensures the stable operation of the damper.

[0043] In this embodiment, the pressure stabilizing component includes a pressure sensor, a fourth valve and a fifth valve arranged in sequence along the conveying path. The pressure sensor is used to obtain the pressure information of the gas output by the high-pressure gas cylinder 3, the fourth valve is used to open and close the pipeline, and the fifth valve is used to adjust the pipeline pressure according to the pressure information.

[0044] Specifically, the pressure sensor obtains pressure information, so that the fifth valve can adjust the pipeline pressure according to the pressure information, which is a conventional prior art. The specific connection method of the pressure sensor and the fifth valve is not repeated here. Further, the fourth valve is a stop valve, and the fifth valve is a pressure reducing valve. The specific structures of the fourth valve and the fifth valve can be selected by technicians in this field as needed, and are not limited here.

[0045] It is understandable that the pressure sensor can obtain the pressure information of the gas output by the high-pressure gas cylinder 3, and the control end can control the fifth valve to adjust the pipeline pressure according to the gas pressure information, so that the pressure delivered to the pneumatic drive device is more stable. The fourth valve can control the on-off between the gas cylinder and the pneumatic drive device, which is convenient for controlling the gas circuit.

[0046] The damper in this embodiment includes the above-mentioned mine unpressurized damper air source stabilizing device, a pneumatic drive device (not shown in the figure) and a damper body (not shown in the figure), the air inlet of the pneumatic drive device is connected to the air outlet of the mine unpressurized damper air source stabilizing device, and the damper body is connected to the pneumatic drive device.

[0047] Specifically, the gas outlet of the high-pressure gas cylinder 3 is connected to the pneumatic drive device to supply gas to the pneumatic drive device through the high-pressure gas cylinder 3. When the gas outlet of the high-pressure gas cylinder 3 is provided with a pressure stabilizing component, the pneumatic drive device can be connected to the gas outlet of the pressure stabilizing component.

[0048] The damper in this embodiment is provided with the above-mentioned mine unpressurized damper air source stabilizing device. The gas enters the filter 1 through the air intake pipe. After the filter 1 filters the moisture, dust, etc. in the gas, the gas is pressurized by the booster pump 2. The pressurized gas is transported to the high-pressure gas cylinder 3, and then the gas in the high-pressure gas cylinder 3 is transported to the pneumatic drive device. It can provide the pneumatic drive device with stable pressure and cleaner gas, which is conducive to the pneumatic drive device to stably drive the damper switch.

[0049] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A mine non-pressure damper air source stabilization device, characterized in that: It includes a filter, a booster pump and a high-pressure gas cylinder which are connected in sequence along the conveying path of the air flow. The air inlet of the filter is connected to the air outlet of the air inlet pipeline, and the air outlet of the high-pressure gas cylinder is connected to the pneumatic drive device of the damper to provide an air source to the pneumatic drive device.

2. The mine non-pressure damper air source stabilization device according to claim 1 is characterized in that: It also includes a first valve, wherein the air inlet of the first valve is connected to the air outlet of the filter, and the air outlet of the first valve is connected to the air inlet of the booster pump.

3. The mine non-pressure damper air source stabilization device according to claim 1 is characterized in that: It also includes a cleaning tube group, the air inlet of the cleaning tube group is connected to the air outlet of the high-pressure gas cylinder, and the air outlet end of the cleaning tube group is arranged between the inner wall of the cylinder of the filter and the outer wall of the filter element of the filter.

4. The mine non-pressure damper air source stabilization device according to claim 3 is characterized in that: The cleaning pipe set comprises a first cleaning pipeline, which is spirally wound around the inner wall of the cylinder, and a portion of the first cleaning pipeline located in the filter is provided with a first air outlet opening with an outlet facing the bottom of the filter.

5. The mine non-pressure damper air source stabilization device according to claim 4 is characterized in that: The cleaning pipe set also includes a second cleaning pipeline, which is spirally wound around the outer wall of the filter element, and the portion of the second cleaning pipeline located inside the filter is provided with a second air outlet facing the bottom of the filter.

6. The mine non-pressure damper air source stabilization device according to claim 3 is characterized in that: It also includes a second valve, which is arranged between the air outlet of the booster pump and the air inlet of the cleaning tube group.

7. The mine non-pressure damper air source stabilization device according to claim 3 is characterized in that: It also includes a third valve, which is a reversing valve. The third valve is connected to the booster pump, the cleaning pipe group and the high-pressure gas cylinder respectively. The third valve has three working positions: a first working position, a second working position and a third working position. In the first working position, the gas output by the booster pump enters the high-pressure gas cylinder through the third valve. In the second working position, the gas output by the high-pressure gas cylinder enters the filter through the third valve. In the third working position, the passage between the booster pump and the high-pressure gas cylinder is closed, and the passage between the high-pressure gas cylinder and the cleaning pipe group is closed.

8. The mine non-pressure damper air source stabilization device according to claim 1 is characterized in that: It also includes a pressure stabilizing component, the air inlet of the pressure stabilizing component is connected to the air outlet of the high-pressure gas cylinder, and the air outlet of the pressure stabilizing component is connected to the air inlet of the pneumatic drive device.

9. The mine non-pressure damper air source stabilizing device according to claim 8, characterized in that: The pressure stabilizing component includes a pressure sensor, a fourth valve and a fifth valve arranged in sequence along the conveying path, the pressure sensor is used to obtain the pressure information of the gas output by the high-pressure gas cylinder, the fourth valve is used to open and close the pipeline, and the fifth valve is used to adjust the pipeline pressure according to the pressure information.

10. A damper, characterized in that: It comprises the mine non-pressure damper air source stabilizing device, pneumatic drive device and damper body as described in any one of claims 1 to 9, the air inlet of the pneumatic drive device is connected to the air outlet of the mine non-pressure damper air source stabilizing device, and the damper body is connected to the pneumatic drive device.

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