Drainage device for air storage tank of air compressor

Abstract

The utility model discloses an air compressor air storage tank drainage device which comprises a base station, an air compressor body, a control unit and a drainage pipe, an externally-attached type liquid level sensing device is arranged on the side wall of an air storage tank of the air compressor body, an on-off control device is arranged on the drainage pipe, a driving device is arranged on one side of the on-off control device, and the control unit is arranged on the base station. A connecting rod is arranged between the driving device and the on-off control device, the driving device comprises an angle control device and a pneumatic telescopic rod, the pneumatic telescopic rod is connected with the air compressor body through an air guide pipe, the air guide pipe is provided with an electromagnetic on-off device, and the electromagnetic on-off device is electrically connected with the control unit. According to the automatic drainage device, automatic drainage can be carried out according to preset drainage requirements, the intellectualization and reliability of the drainage device are improved, the air tightness of the air storage tank can be guaranteed, and the maintenance requirements and maintenance difficulty of the device are reduced.

Description

Technical Field

[0001] This utility model relates to the field of air compressor equipment technology, and in particular to an air compressor storage tank drainage device. Background Technology

[0002] In large-scale flour production and processing, many automated equipment structures are required, generally electrical automation equipment. The power source for pneumatic devices is the air compressor, also known as an air compressor, which is a mechanical device used to compress gas. Its working principle is to increase the pressure of compressed air to produce compressed air with a certain pressure. This compressed air can be used in various industrial and commercial applications, such as pneumatic tools, equipment cleaning, fuel nozzles, etc.

[0003] The air in the external environment has humidity. When the air is compressed at high speed by the air compressor, the air temperature under high pressure is 20°C to 30°C higher than the ambient temperature. When the air molecules with higher temperature come into contact with the cooler air tank wall, they will condense into water. The water will fall down the tank wall to the bottom of the tank, causing a lot of water to accumulate in the air compressor's air tank, which will corrode the air tank and affect the overall service life of the air compressor.

[0004] Chinese patent application number "2024203121914" discloses a drainage device for an air compressor storage tank. This device comprises a tank body, a reciprocating structure, a collar, a rubber ring, and a drain pipe. When discharging liquid water from inside the tank, a motor drives a half-gear to rotate. The half-gear contacts a spur gear during rotation, and the rotating plate applies a thrust to a connecting plate. The connecting plate then moves the collar on the surface of a guide rod. Through the cooperation between the half-gear, spur gear, and connecting plate, the rubber ring reciprocates within the tank, cleaning the inner wall of the tank and preventing small water droplets from adhering to it during discharge. This, to some extent, ensures the normal operation of the air compressor storage tank. However, the structure of this air compressor storage tank is complex. In actual use, the moisture-containing compressed air and high-temperature environment cause severe corrosion to the internal components, requiring maintenance after a period of use. Furthermore, maintenance is difficult inside the storage tank, and ensuring its airtightness is challenging.

[0005] Chinese patent application number "2024210918432" discloses an air compressor sewage discharge device. A servo motor drives a main gear and a surface-meshing auxiliary gear on one side to rotate together, which in turn drives an impeller at the top of the auxiliary gear to rotate. The rotating impeller blows hot air generated by the heating grid above into the air tank, drying the residual moisture inside the tank and preventing corrosion from the residual moisture reacting with the inner wall of the air tank. During use, a threaded sleeve is threaded onto the air inlet surface; impurities in the air are filtered by a filter screen installed inside the threaded sleeve. The filter absorbs moisture when humid air comes into contact with the water-absorbing layer inside the threaded sleeve, further improving the air intake quality of the air compressor and reducing the amount of moisture entering the air tank. The threaded sleeve is connected by threads, so it can be disassembled periodically for cleaning and replacement. However, in actual operation, the air pressure inside the air compressor's air tank is between 1MPa and 1.5MPa. The technical operation of blowing hot air into the air tank by driving the impeller with a servo motor is difficult, and the sewage discharge device cannot guarantee the high-pressure environment and airtightness of the air tank. Utility Model Content

[0006] The purpose of this utility model is to provide a drainage device for an air compressor storage tank, which can not only automatically drain according to preset drainage requirements, improving the intelligence and reliability of the drainage device, but also ensure the airtightness of the storage tank, reducing the maintenance requirements and difficulty of the device, thereby solving the problems in the prior art.

[0007] To achieve the above objectives, this utility model employs the following technical solution:

[0008] An air compressor tank draining device includes a base, an air compressor body mounted on the base, a control unit mounted on one side of the air compressor, and a drain pipe located at the bottom of the air compressor tank. An externally attached liquid level sensor is mounted on the side wall of the air compressor tank and is electrically connected to the control unit. An on / off control device is mounted on the drain pipe, and a drive device is mounted on one side of the on / off control device. A connecting rod is provided between the drive device and the on / off control device. The drive device includes an angle control device mounted on one side of the drain pipe and a pneumatic telescopic rod mounted on the angle control device. The pneumatic telescopic rod is connected to the air compressor body via an air guide pipe, and an electromagnetic on / off device is mounted on the air guide pipe and is electrically connected to the control unit.

[0009] Furthermore, the on / off control device includes a flow channel housing mounted on the drain pipe, a rotating shaft rotatably connected to the flow channel housing and passing through the flow channel housing, and an on / off control plate connected to the rotating shaft. A sealing device is provided at the connection between the rotating shaft and the flow channel housing. The edge of the on / off control plate is provided with a conical structure, and the included angle between the conical structure and the plate surface angle of the on / off control plate is 15°~30°.

[0010] Furthermore, one end of the connecting rod is fixedly connected to the rotating shaft, and the other end is rotatably connected to the output end of the pneumatic telescopic rod.

[0011] Furthermore, the angle control device includes a mounting bracket on the base, a locking structure on the mounting bracket, and a rotating structure sleeved on the mounting bracket. The rotating structure includes a support sleeve on the mounting bracket, a cylinder base sleeved on the support sleeve, and a bearing between the support sleeve and the cylinder base. The outer circle of the bearing is keyed to the support sleeve, and the inner circle of the bearing is keyed to the support sleeve.

[0012] Furthermore, the locking structure includes a movable rod slidably connected to the mounting bracket, an elastic element sleeved on the movable rod, a cam handle rotatably connected to one end of the movable rod, a first friction ring on the movable rod, and a second friction ring on the cylinder base. The movable rod passes through the mounting bracket and is rotatable relative to the mounting bracket. A mounting ring is provided at the end of the movable rod away from the cam handle. The first friction ring is provided on the mounting ring, and the second friction ring is provided on the side wall of the cylinder base corresponding to the position of the first friction ring. A limiting sleeve is provided on the mounting ring at the inner circle position corresponding to the first friction ring. The limiting sleeve is slidably connected to the support sleeve, and the inner diameter of the limiting sleeve is larger than the outer diameter of the sliding contact portion of the support sleeve.

[0013] Furthermore, a gasket is provided between the cam handle and the mounting bracket to prevent the cam handle from slipping in the locked state.

[0014] Furthermore, a control switch is provided between the control unit and the electromagnetic on / off device to facilitate checking the drainage function during debugging and maintenance.

[0015] The beneficial effects of this utility model are as follows: This utility model uses an external liquid level sensor installed on the side wall of the air compressor body's air tank to monitor the liquid water level at the bottom of the air tank in real time. The control unit controls the opening or closing of the electromagnetic on / off device based on the signal feedback from the external liquid level sensor, thereby driving the pneumatic telescopic rod to operate the on / off control device and realize the drainage operation of the air tank. This not only improves the reliability of the drainage mechanism, but also ensures the airtightness of the air tank by adjusting the torque of the pneumatic telescopic rod driving the on / off control device through the angle control device, while also reducing the maintenance requirements and difficulty of the device. Attached Figure Description

[0016] Figure 1 An overall structural diagram of an air compressor storage tank drainage device provided by this utility model;

[0017] Figure 2 An overall assembly drawing of the on / off control device and drive device provided by this utility model;

[0018] Figure 3 Partial cross-sectional view of the driving device provided by this utility model;

[0019] Figure 4 for Figure 3 Enlarged view of section A;

[0020] Figure 5 A cross-sectional view of the locking structure provided by this utility model;

[0021] Figure 6 A cross-sectional view of the on / off control device provided by this utility model;

[0022] Figure 7 for Figure 6 Enlarged view of section B.

[0023] The diagram shows the following labels: 100, base; 200, air compressor body; 300, control unit; 400, drain pipe; 500, on / off control device; 510, flow channel housing; 520, rotating shaft; 530, on / off control board; 600, drive device; 610, angle control device; 620, pneumatic telescopic rod; 630, mounting bracket; 640, locking structure; 641, movable rod; 642, elastic element; 643, cam handle; 644, first friction ring; 645, second friction ring; 646, mounting ring; 647, limit sleeve; 650, rotating structure; 651, support sleeve; 652, cylinder base; 653, bearing; 700, connecting rod; 800, electromagnetic on / off device; 900, external liquid level sensor. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] The following is an example:

[0027] like Figure 1 , Figure 2 The air compressor tank drainage device shown includes a base 100, an air compressor body 200 fixed to the base 100 by bolts and fasteners, a control unit 300 installed on one side of the air compressor, and a drain pipe 400 threadedly connected to the bottom of the air compressor body 200's air tank. Two externally mounted liquid level sensors 900 are provided on the side wall of the air compressor body 200's air tank. The externally mounted liquid level sensors 900 are DS1603NF ultrasonic liquid level sensors. The externally mounted liquid level sensors 900 are bonded to the outer wall of the air tank with polyurethane sealant. According to the air tank drainage requirements, one bonding position of the externally mounted liquid level sensor 900 is set at the high liquid level on the outer wall of the air tank, and another externally mounted liquid level sensor 900 is set at the low liquid level on the outer wall of the air tank. The liquid level sensor 900 is attached to an external liquid level sensor 900, which is electrically connected to the control unit 300. An on / off control device 500 is installed on the drain pipe 400. A drive device 600 is installed on one side of the on / off control device 500 by bolt fasteners. A connecting rod 700 is provided between the drive device 600 and the on / off control device 500. The drive device 600 includes an angle control device 610 on one side of the drain pipe 400 and a pneumatic telescopic rod 620 on the angle control device 610. The pneumatic telescopic rod 620 is connected to the air compressor body 200 through an air guide pipe. An electromagnetic on / off device 800 is provided on the air guide pipe. The electromagnetic on / off device 800 is a 4V210-082 electromagnetic directional valve. The electromagnetic on / off device 800 is electrically connected to the control unit 300.

[0028] As a further technical solution in this embodiment, such as Figure 6 , Figure 7The on / off control device 500 shown includes a flow channel housing 510 threadedly connected to the drain pipe 400, a rotating shaft 520 rotatably connected to the flow channel housing 510 and passing through the flow channel housing 510, and an on / off control plate 530 connected to the rotating shaft 520. A sealing device is provided at the connection between the rotating shaft 520 and the flow channel housing 510. The structure of the sealing device between the rotating shaft 520 and the flow channel housing 510 is substantially the same as the sealing structure between the valve stem and valve body of a butterfly valve in the prior art, and will not be described in detail here. The edge of the on / off control plate 530 is provided with... It has a conical structure, and the angle between the conical structure and the plate surface angle of the on / off control plate 530 is 30°. A closed groove is opened on the inner wall of the flow channel housing 510 corresponding to the on / off control plate 530. The groove wall that contacts the conical structure of the on / off control plate 530 forms an angle with the vertical direction. The angle of the closed groove is the same as the angle between the conical structure and the plate surface angle of the on / off control plate 530. At the same time, one end of the connecting rod 700 is fastened to the rotating shaft 520 by double nuts, and the other end is rotatably connected to the output end of the pneumatic telescopic rod 620.

[0029] As a further technical solution in this embodiment, such as Figure 3 , Figure 4 , Figure 5 The angle control device 610 shown includes a mounting bracket 630 mounted on the base 100 by bolt fasteners, a locking structure 640 provided on the mounting bracket 630, and a rotating structure 650 sleeved on the mounting bracket 630. The rotating structure 650 includes a support sleeve 651 fixed on the mounting bracket 630 by screw fasteners, a cylinder base 652 sleeved on the support sleeve 651, and a bearing 653 provided between the support sleeve 651 and the cylinder base 652. The outer circle of the bearing 653 is keyed to the support sleeve 651, and the inner circle of the bearing 653 is keyed to the support sleeve 651.

[0030] As a further technical solution in this embodiment, such as Figure 5The locking structure 640 shown includes a movable rod 641 slidably connected to the mounting bracket 630, an elastic element 642 sleeved on the movable rod 641, a cam handle 643 rotatably connected to one end of the movable rod 641, a first friction ring 644 provided on the movable rod 641, and a second friction ring 645 provided on the cylinder base 652. The elastic element 642 is a compression spring. The first friction ring 644 and the second friction ring 645 are both made of carbon fiber reinforced polyetheretherketone composite material. The movable rod 641 passes through the mounting bracket 630 and is rotatable relative to the mounting bracket 630. A mounting ring 646 is provided at the end of the movable rod 641 away from the cam handle 643. The first friction ring 644 is fixed to the mounting ring 646 by bolts, and the second friction ring 645 is fixed to the first friction ring 641 by bolts. On the side wall of the cylinder base 652 corresponding to position 44, a limiting sleeve 647 is provided on the mounting ring 646 corresponding to the inner circle position of the first friction ring 644. The limiting sleeve 647 is slidably connected to the support sleeve 651. The inner circle diameter of the limiting sleeve 647 is larger than the outer circle diameter of the sliding contact part of the support sleeve 651. In actual assembly, the sliding contact part of the support sleeve 651 is symmetrically provided with two limiting sliders along the axial direction of the support sleeve 651. The inner circle of the limiting sleeve 647 is provided with a limiting groove suitable for the sliding of the limiting slider, so as to ensure that the limiting sleeve 647 does not rotate when it moves linearly on the support sleeve 651. In addition, the movable rod 641, the mounting plate and the limiting sleeve 647 are integrally formed. A gasket is provided between the cam handle 643 and the mounting bracket 630 to prevent the cam handle 643 from slipping in the locked state.

[0031] Based on the daily maintenance needs of the air compressor, the installation position of the external liquid level sensor 900 in the air tank is determined, thereby determining the threshold range for automatic drainage. When the liquid water level in the air tank reaches the trigger threshold, the controller of the control unit 300 detects the current change of the external liquid level sensor 900 at a high liquid level. The controller sends a command to the electromagnetic on / off device 800 to control the electromagnetic on / off device 800 to conduct, thereby controlling the extension of the pneumatic telescopic rod 620. This extension, through the connecting rod 700, drives the rotating shaft 520 to rotate, thereby driving the on / off control board 530 to rotate. The drain pipe 400 is connected to perform drainage. When the liquid water level reaches the bonding position of the external liquid level sensor 900 corresponding to the low liquid level, the controller of the control unit 300 detects the current change of the external liquid level sensor 900. The controller sends a command to the electromagnetic switching device 800 to control the electromagnetic switching device 800 to switch on, thereby controlling the telescopic part of the pneumatic telescopic rod 620 to retract. Through the connecting rod 700, the rotating shaft 520 is driven to rotate, thereby driving the on / off control plate 530 to rotate in the opposite direction, and thus the drain pipe 400 stops draining.

[0032] When the drain pipe 400 stops draining, if liquid water is still discharged or gas is overflowing from the drain outlet, it indicates that the on / off control board 530 is not fully closed. The rotation angle of the pneumatic telescopic rod 620 can be adjusted, thereby adjusting the lever arm torque of the pneumatic telescopic rod 620 driving the connecting rod 700. The specific adjustment steps are as follows: Move the cam handle 643 to separate the first friction ring 644 from the second friction ring 645. Rotate the cylinder base 652 to adjust the pneumatic telescopic rod 620 to a suitable angle. Then, move the cam handle 643 in the opposite direction. The cam handle 643 drives the movable rod 641 to slide to the right, thereby causing the first friction ring 644 and the second friction ring 645 installed on the mounting ring 646 to come into tight contact, thereby fixing the cylinder base 652 and ensuring that the pneumatic telescopic rod 620 does not rotate during operation.

[0033] As a further technical solution in this embodiment, a control switch is provided between the control unit 300 and the electromagnetic switching device 800 to facilitate checking the drainage function during debugging and maintenance. The control switch is connected in series in the circuit between the control unit 300 and the electromagnetic switching device 800. Pressing the button of the control switch can force the start of a drainage cycle, which facilitates checking whether the drainage function is normal during debugging and maintenance.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drain device for an air compressor's air tank, comprising a base, an air compressor body mounted on the base, a control unit mounted on one side of the air compressor, and a drain pipe located at the bottom of the air tank of the air compressor body, characterized in that: An external liquid level sensor is installed on the side wall of the air tank of the air compressor body. The external liquid level sensor is electrically connected to the control unit. An on / off control device is installed on the drain pipe. A drive device is installed on one side of the on / off control device. A connecting rod is provided between the drive device and the on / off control device. The drive device includes an angle control device on one side of the drain pipe and a pneumatic telescopic rod on the angle control device. The pneumatic telescopic rod is connected to the air compressor body through an air guide pipe. An electromagnetic on / off device is installed on the air guide pipe. The electromagnetic on / off device is electrically connected to the control unit.

2. The air compressor storage tank drainage device according to claim 1, characterized in that: The on / off control device includes a flow channel housing mounted on a drain pipe, a rotating shaft rotatably connected to the flow channel housing and passing through the flow channel housing, and an on / off control plate connected to the rotating shaft. A sealing device is provided at the connection between the rotating shaft and the flow channel housing. The edge of the on / off control plate is provided with a conical structure. The angle between the conical structure and the plate surface angle of the on / off control plate is 15°~30°.

3. The air compressor storage tank drainage device according to claim 2, characterized in that: One end of the connecting rod is fixedly connected to the rotating shaft, and the other end is rotatably connected to the output end of the pneumatic telescopic rod.

4. The air compressor storage tank drainage device according to claim 1, characterized in that: The angle control device includes a mounting bracket on the base, a locking structure on the mounting bracket, and a rotating structure sleeved on the mounting bracket. The rotating structure includes a support sleeve on the mounting bracket, a cylinder base sleeved on the support sleeve, and a bearing between the support sleeve and the cylinder base. The outer circle of the bearing is keyed to the support sleeve, and the inner circle of the bearing is keyed to the support sleeve.

5. The air compressor storage tank drainage device according to claim 4, characterized in that: The locking structure includes a movable rod slidably connected to the mounting bracket, an elastic element sleeved on the movable rod, a cam handle rotatably connected to one end of the movable rod, a first friction ring on the movable rod, and a second friction ring on the cylinder base. The movable rod passes through the mounting bracket and can rotate relative to the mounting bracket. A mounting ring is provided at the end of the movable rod away from the cam handle. The first friction ring is provided on the mounting ring, and the second friction ring is provided on the side wall of the cylinder base corresponding to the position of the first friction ring. A limiting sleeve is provided on the mounting ring at the inner circle position corresponding to the first friction ring. The limiting sleeve is slidably connected to the support sleeve, and the inner diameter of the limiting sleeve is larger than the outer diameter of the sliding contact portion of the support sleeve.

6. The air compressor storage tank drainage device according to claim 5, characterized in that: A gasket is provided between the cam handle and the mounting bracket to prevent the cam handle from slipping in the locked state.

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