Drainage device of compressed air storage tank

Abstract

The utility model provides a drainage device of a compressed air storage tank. The drainage device comprises an exhaust pipe, an exhaust valve and a drainage mechanism, an exhaust valve is arranged at the bottom of the exhaust pipe, a drainage mechanism is arranged in the exhaust pipe and comprises a water collecting tank, a spring, a drainage suction pipe, a drainage outlet pipe and a rotating valve, the bottom of the spring is fixed, the top of the spring is connected with the water collecting tank, and the drainage suction pipe is arranged in the water collecting tank and rotationally arranged at the input end of the rotating valve; a drainage water outlet pipe is arranged at the output end of the rotating valve and penetrates through the exhaust pipe. Through the arrangement of the exhaust pipe, the exhaust valve and the drainage mechanism structure, the spring is influenced by the water quantity in the water collecting tank to automatically return to open and close the valve, so that the drainage suction pipe and the drainage outlet pipe are staggered or communicated, and the compressed air storage tank does not exhaust gas during drainage.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, specifically to a compressed air storage tank drainage device. Background Technology

[0002] During the operation of a compressed air unit, in order to balance the flow rate between compressed air processing equipment and remove moisture from the air, a compressed air storage tank is generally installed after the air compressor and before the refrigerated dryer and desiccant dryer to balance the air flow rate and remove moisture from the air.

[0003] Compressed air storage tanks are typically drained using manual or automatic drain valves, either by opening the valve at set times or by detecting the liquid level inside the tank. However, both methods result in the discharge of some compressed air along with the drained air, which also generates noise, affecting the physical and mental health of workers. Furthermore, these methods often employ electrical control, requiring the installation of control circuitry, which makes construction cumbersome. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to prevent gas from being discharged when the compressed air storage tank is drained.

[0005] This utility model solves the above-mentioned technical problems through the following technical means:

[0006] A compressed air storage tank drainage device includes an exhaust pipe (2), an exhaust valve (3), and a drainage mechanism (4); the exhaust pipe (2) is provided with an exhaust valve (3) at its bottom, and the exhaust pipe (2) is provided with a drainage mechanism (4). The drainage mechanism (4) includes a water collection tank (41), a spring (42), a drainage suction pipe (44), a drainage outlet pipe (46), and a rotary valve (47). The bottom of the spring (42) is fixed, and the top is connected to the water collection tank (41). The drainage suction pipe (44) is provided in the water collection tank (41) and is rotatably provided at the input end of the rotary valve (47). The output end of the rotary valve (47) is provided with a drainage outlet pipe (46), and the drainage outlet pipe (46) passes through the exhaust pipe (2).

[0007] Beneficial effects: Through the design of the exhaust pipe, exhaust valve, and drainage mechanism, the spring automatically returns to its original position due to the amount of water in the water collection tank, thereby causing the valve to open and close. This allows the drainage suction pipe and the drainage outlet pipe to be staggered or connected, ensuring that no gas is discharged when the compressed air storage tank drains.

[0008] Furthermore, a connecting flange (1) is fixed to the top of the exhaust pipe (2), and the connecting flange (1) is fixed to the interface flange at the bottom of the compressed air storage tank.

[0009] Beneficial effects: The installation of the drainage mechanism and the subsequent disassembly and maintenance of the air vent valve are facilitated by the connection flange.

[0010] Furthermore, the connecting flange (1) is welded and fixed to the exhaust pipe (2).

[0011] Furthermore, a guide plate (21) is fixed on the inner wall of the top of the exhaust pipe (2), and the guide plate (21) is arranged facing the water collection tank (41).

[0012] Beneficial effect: By setting up the baffle, the liquid in the compressed air storage tank is guided to the water collection tank, preventing the liquid from flowing down the inner wall of the exhaust pipe to the bottom.

[0013] Furthermore, the bottom of the spring (42) is fixed on the spring bracket (43), which is fixed on the inner wall of the exhaust pipe (2), and the spring bracket (43) is provided with multiple holes.

[0014] Beneficial effect: The multiple holes on the spring bracket allow for air venting.

[0015] Furthermore, the bottom of the water collection tank (41) is inclined, and the bottom of the drainage suction pipe (44) is placed at one of the inclined ends.

[0016] Beneficial effects: The inclined design of the water collection tank has two advantages. First, it facilitates the movement of the drainage and suction pipe at the bottom of the tank, preventing the pipe from getting stuck. Second, the inclined bottom of the tank ensures that the bottom of the drainage and suction pipe is always submerged below the liquid surface during water collection, preventing compressed air leakage.

[0017] Furthermore, a guide wheel (45) is fixed to the bottom end of the drainage suction pipe (44).

[0018] Beneficial effects: The guide rollers help the drainage suction pipe slide on the bottom of the water collection tank, while providing a gap to prevent the bottom of the drainage suction pipe from being too close to the bottom of the water collection tank, thus affecting drainage efficiency.

[0019] Furthermore, the rotary valve (47) includes a water intake part (471), a water intake channel (472), a water outlet part (474), and a water outlet channel (475). The water outlet part (474) is fixed, and the water intake part (471) is rotatably connected to the water outlet part (474) through a rotating shaft. The water outlet part (474) has a water outlet channel (475) on the side near the water intake part (471), and the water intake part (471) has a water intake channel (472) on the side near the water outlet part (474). The two channels overlap when rotating. The ends of the water outlet channel (475) and the water intake channel (472) are respectively connected to a drain outlet pipe (46) and a drain suction pipe (44).

[0020] Beneficial effect: By turning the valve, when the liquid in the collection tank reaches a certain weight, the liquid in the collection tank is discharged.

[0021] Furthermore, a sliding sealing part (473) is fixed at the junction of the water absorption part (471) and the water outlet part (474).

[0022] Beneficial effect: The sliding seal prevents compressed air from leaking out at the junction.

[0023] Furthermore, all components in the exhaust pipe (2), exhaust valve (3), and drainage mechanism (4) that come into direct contact with the liquid are made of rust-proof materials or materials with rust-proof coatings. Attached Figure Description

[0024] Figure 1 This is a front sectional view of the compressed air storage tank drainage device according to Embodiment 1 of this utility model;

[0025] Figure 2 This is a front sectional view of the compressed air storage tank drainage device in the drainage state according to Embodiment 1 of this utility model;

[0026] Figure 3 This is an assembly diagram of the rotary valve, drain suction pipe, and drain outlet pipe in the compressed air storage tank drainage device of Embodiment 1 of this utility model.

[0027] Figure 4 This is a schematic diagram of the internal structure of the rotating valve in the compressed air storage tank drainage device according to Embodiment 1 of this utility model;

[0028] Figure 5 This is an internal schematic diagram of the compressed air storage tank drainage device in Embodiment 1 of this utility model, showing the drainage state of the rotating valve. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example 1

[0031] like Figure 1 As shown, this embodiment provides a compressed air storage tank drainage device, including a connecting flange 1, an exhaust pipe 2, an exhaust valve 3, and a drainage mechanism 4.

[0032] like Figure 1 , Figure 2 As shown, the connecting flange 1 is fixed to the interface flange at the bottom of the compressed air storage tank, which facilitates the installation of the drainage mechanism 4 and the disassembly and maintenance of the exhaust valve 3. The installation of the connecting flange 1 must meet the airtightness requirements of the compressed air storage tank. An exhaust pipe 2 is fixed to the free end of the connecting flange 1. In this embodiment, the connecting flange 1 and the exhaust pipe 2 are welded together. An exhaust valve 3 is fixed to the bottom of the exhaust pipe 2. It is normally closed. When it is necessary to vent air, the exhaust valve 3 is opened to allow the compressed air to be discharged from the tank. A drainage mechanism 4 is provided between the connecting flange 1 and the drainage mechanism 4 of the exhaust pipe 2. A guide plate 21 is fixed on the inner wall of the top of the exhaust pipe 2. The guide plate 21 is set towards the water collection tank 41 to guide the liquid in the compressed air storage tank to the water collection tank 41 and prevent the liquid from flowing to the bottom along the inner wall of the exhaust pipe 2. All parts that come into direct contact with the liquid are made of rust-proof materials or materials with rust-proof coatings.

[0033] Continue reading Figure 1 , Figure 2As shown, the drainage mechanism 4 includes a water collection tank 41, a spring 42, a spring bracket 43, a drainage suction pipe 44, a guide wheel 45, a drainage outlet pipe 46, and a rotary valve 47. The water collection tank 41 is located inside the exhaust pipe 2 and is mainly used to collect liquid in the compressed air storage tank, allowing the collected liquid to generate a certain amount of gravity. The bottom of the water collection tank 41 is inclined. In this embodiment, the bottom of the water collection tank 41 is inclined towards the side away from the drainage outlet pipe 46. The bottom of the drainage suction pipe 44 is placed at the inclined end, which facilitates the sliding of the guide wheel 45 at the bottom of the drainage suction pipe 44 on the bottom of the tank and prevents... The drainage suction pipe 44 is designed to prevent it from jamming with the water collection tank 41 during sliding; secondly, the tilted bottom of the tank helps to keep the bottom of the drainage suction pipe 44 submerged below the liquid surface during water collection, preventing compressed air leakage; a spring 42 is fixed at the bottom of the water collection tank 41. The elasticity of the spring 42 supports the water collection tank 41 to return to its original position after the liquid in the tank is emptied, thereby driving the rotary valve 47 to close; the number, installation position, and specifications of the springs 42 are calculated using force analysis based on the required water volume that the water collection tank 41 needs to handle. The change in the center of gravity caused by the tilted bottom of the water collection tank 41 must also be considered, and the springs should be rationally configured. A spring 42 is used to ensure that the center of the water collection tank 41 coincides with the center of the exhaust pipe 2 as much as possible, preventing the water collection tank 41 from tilting. The bottom of the spring 42 is fixed to a spring bracket 43, which is fixed to the inner wall of the exhaust pipe 2. This bracket is used to fix and support the spring 42 and limit the maximum sinking of the water collection tank 41 due to the gravity of the liquid. The spring bracket 43 has many holes for venting the compressed air tank. A drain suction pipe 44 is located inside the water collection tank 41. The drain suction pipe 44 is inverted L-shaped, and its top end is fixed to the suction part 471 of the rotary valve 47 for drainage. A guide wheel 45 is fixed to the bottom end of the suction pipe 44. The guide wheel 45 is placed at the lowest point of the slope of the bottom surface of the water collection tank 41, which helps the drainage suction pipe 44 slide on the bottom surface of the water collection tank 41 and provides a gap to prevent the bottom end of the drainage suction pipe 44 from being too close to the bottom surface of the water collection tank 41, thus affecting the drainage efficiency. The drainage outlet pipe 46 is set in an inverted L shape. The top end of the drainage outlet pipe 46 is fixed to the outlet part 474 of the rotating valve 47. The vertical pipe of the drainage outlet pipe 46 is set outside the exhaust pipe 2 to discharge the liquid in the water collection tank 41 to the outside. The part of the drainage outlet pipe 46 that extends out of the outer wall must be sealed to prevent compressed air leakage.

[0034] like Figure 1 , Figure 3 , Figure 4 , Figure 5As shown, the rotary valve 47 includes a suction part 471, a suction channel 472, a sliding seal part 473, a water outlet part 474, and a water outlet channel 475. The water outlet part 474 is fixed. The suction part 471 is rotatably connected to the water outlet part 474 via a rotating shaft. The water outlet part 474 has a water outlet channel 475 on the side near the suction part 471, and the suction part 471 has a suction channel 472 on the side near the water outlet part 474. When the two channels rotate, they overlap. Except for the opening of the overlapping part, the rest of the two channels are wrapped inside the water outlet (suction) part. The ends of the water outlet channel 475 and the suction channel 472 are respectively connected to the drain outlet pipe 46 and the drain suction pipe 44. A sliding seal part 473 is fixed at the junction of the suction part 471 and the water outlet part 474 to prevent compressed air from leaking out at the junction.

[0035] In use, the exhaust pipe 2 is installed at the bottom of the compressed air storage tank. A water collection tank 41 is installed inside the exhaust pipe 2. Initially, a small amount of liquid is pre-filled at the bottom of the water collection tank 41, and the bottom of the drain suction pipe 44 is submerged in the liquid. A spring 42 is connected below the water collection tank 41, and a rotary valve 47 is installed above the water collection tank 41. At this time, the rotary valve 47 is closed, and the drain suction pipe 44 is not connected to the drain outlet pipe 46. The liquid in the compressed air storage tank gathers towards the bottom of the tank under gravity, flows into the water collection tank 41 after being guided by the guide plate 21, and gradually increases in mass. As the mass of the liquid in the water collection tank 41 increases, the spring 42 is compressed, and the position of the water collection tank 41 decreases. The suction part 471 in the rotary valve 47 and the drain suction pipe 44 are deflected towards the center of gravity due to the support of the bottom of the water collection tank 413. The suction channel 472 of the suction part 471 in the rotary valve 47 rotates with the center of gravity. The outlet passage 475 of the outlet section 474 in the rotary valve 47 is connected, so that the drain suction pipe 44 is connected to the drain outlet pipe 46. Under the action of the internal and external pressure difference, the liquid in the water collection tank 41 enters the rotary valve 47 through the drain suction pipe 44 and is discharged through the drain outlet pipe 46. After the liquid flows out, the water collection tank 41 is reset under the action of the spring force 42. The guide wheel 45 at the bottom of the drain suction pipe 44 contacts the inner bottom of the water collection tank 41. The inclined inner bottom causes the drain suction pipe 44 to gradually return to the initial state. After the rotary valve 47 is reset, there is still a small amount of liquid at the lowest point of the inner bottom of the water collection tank 41, so that the bottom of the drain suction pipe 44 is submerged. This achieves the goal of not carrying compressed air during the drainage process, reducing drainage noise and reducing gas leakage.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A compressed air storage tank drainage device, characterized in that, Includes an exhaust pipe (2), an exhaust valve (3), and a drainage mechanism (4); An exhaust valve (3) is provided at the bottom of the exhaust pipe (2), and a drainage mechanism (4) is provided inside the exhaust pipe (2). The drainage mechanism (4) includes a water collection tank (41), a spring (42), a drainage suction pipe (44), a drainage outlet pipe (46), and a rotating valve (47). The bottom of the spring (42) is fixed, and the top is connected to the water collection tank (41). The drainage suction pipe (44) is provided inside the water collection tank (41) and is rotatably provided at the input end of the rotating valve (47). A drainage outlet pipe (46) is provided at the output end of the rotating valve (47), and the drainage outlet pipe (46) passes through the exhaust pipe (2).

2. The compressed air storage tank drainage device according to claim 1, characterized in that: The top of the exhaust pipe (2) is fixed with a connecting flange (1), and the connecting flange (1) is fixed with the interface flange at the bottom of the compressed air storage tank.

3. A compressed air storage tank drainage device according to claim 2, characterized in that: The connecting flange (1) is welded and fixed to the exhaust pipe (2).

4. The compressed air storage tank drainage device according to claim 1, characterized in that: A guide plate (21) is fixed on the inner wall of the top of the exhaust pipe (2), and the guide plate (21) is arranged facing the water collection tank (41).

5. A compressed air storage tank drainage device according to claim 1, characterized in that: The bottom of the spring (42) is fixed on the spring bracket (43), which is fixed on the inner wall of the exhaust pipe (2). The spring bracket (43) has multiple holes.

6. A compressed air storage tank drainage device according to claim 1, characterized in that: The bottom of the water collection tank (41) is inclined, and the bottom of the drainage suction pipe (44) is placed at one of the inclined ends.

7. A compressed air storage tank drainage device according to claim 1, characterized in that: The bottom end of the drainage suction pipe (44) is fixed with a guide wheel (45).

8. A compressed air storage tank drainage device according to claim 1, characterized in that: The rotary valve (47) includes a water intake part (471), a water intake channel (472), a water outlet part (474), and a water outlet channel (475). The water outlet part (474) is fixed, and the water intake part (471) is rotatably connected to the water outlet part (474) through a rotating shaft. The water outlet part (474) has a water outlet channel (475) on the side near the water intake part (471), and the water intake part (471) has a water intake channel (472) on the side near the water outlet part (474). The two channels overlap when rotating. The ends of the water outlet channel (475) and the water intake channel (472) are respectively connected to a drain outlet pipe (46) and a drain suction pipe (44).

9. A compressed air storage tank drainage device according to claim 8, characterized in that: A sliding sealing part (473) is fixed at the junction of the water absorption part (471) and the water outlet part (474).

10. A compressed air storage tank drainage device according to claim 1, characterized in that: All components in the exhaust pipe (2), exhaust valve (3), and drainage mechanism (4) that come into direct contact with the liquid are made of rust-proof materials or materials with rust-proof coatings.

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