A compressed air tank drainage device

Abstract

The utility model relates to compressed air accessory technical field discloses a kind of compressed air storage tank drainage devices, including filter mechanism and drainage mechanism, the inner chamber of the drainage mechanism is separated by partition, conical hole and first drain are opened on the partition, the buoyancy assembly and pneumatic sealing assembly are further provided in the drainage mechanism, the baffle is controlled by float ball and lever structure to respond water level change to open and close first drain outlet liquid, pneumatic sealing assembly includes the conical plug corresponding with conical hole and reset spring, when liquid is exhausted, subsequent high-pressure airflow then promotes conical plug to overcome spring force, to block conical hole, realize fast reliable pneumatic seal. The utility model is through the synergistic effect of buoyancy drainage and pneumatic sealing, solve the problem that high-pressure gas leaks due to sealing not in time in the last period of drainage in the prior art, with simple structure, sealing reliable, high degree of automation and can effectively prevent the beneficial effects of energy waste.

Description

Technical Field

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

[0002] Compressed air, as an important power source, is widely used in modern industrial production. However, during the compression process, the water vapor inside the air condenses into a large amount of liquid water due to changes in temperature and pressure. If this condensate is not drained in time, it will accumulate at the bottom of the air tank and pipeline, which will not only corrode the tank and pipeline and reduce the service life of the equipment, but will also mix into the compressed air, affecting the working accuracy and reliability of subsequent pneumatic equipment.

[0003] To address the aforementioned issues, gas storage tanks are typically equipped with drainage devices. Among these, automatic drainage devices are highly favored due to their advantages of requiring no manual intervention and being able to operate continuously. Existing automatic drainage devices mostly employ the principle of mechanical buoyancy valves, which utilize the buoyancy of the water accumulated inside the tank to support a float. When the water level reaches a certain height, the float opens the drainage valve through a lever mechanism to drain the water.

[0004] However, such drainage devices that rely solely on buoyancy control have a core flaw in practical applications. Towards the end of the drainage process, when the liquid water is almost completely drained, the buoyancy acting on the float decreases sharply, causing the torque required to close the valve to become extremely weak. At this point, the high-pressure compressed air that follows has a powerful impact force that easily overcomes the float's weak closing force. This results in the valve failing to close tightly instantly or being reopened by the high-pressure airflow, causing a large amount of compressed air to leak. This gas leakage not only directly leads to serious energy waste, increasing the operating load and electrical consumption of the air compressor, but also causes instability in the system pressure.

[0005] Therefore, this utility model proposes a compressed air storage tank drainage device to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing compressed air storage tank drainage devices, such as the leakage of high-pressure gas due to the untimely or insufficient closing force of the buoyancy valve at the end of the drainage process, resulting in energy waste and unstable system pressure, this utility model aims to provide a compressed air storage tank drainage device with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a compressed air storage tank drainage device, including: a filter mechanism, a drainage mechanism, and a connecting pipe connecting the two.

[0008] The drainage mechanism includes a drainage tank and a partition that divides the inner cavity of the drainage tank; the partition is fixedly connected to the inner wall of the drainage tank, and has a tapered hole thereon, and a first drainage outlet is also provided below the partition.

[0009] The drainage mechanism also includes a buoyancy component and a pneumatic sealing component.

[0010] The buoyancy assembly consists of a float housed inside the drain tank, a first fixing block, a connecting plate, a baffle, and a connecting rod. The first fixing block is fixed to the inner wall of the drain tank and rotatably connected to the connecting plate as a fulcrum. The baffle is fixed to one end of the connecting plate, its position corresponding to the first drain outlet and rotatably covering or exposing the first drain outlet. The two ends of the connecting rod are rotatably connected to the float and the baffle, respectively. Through this lever-type structure, the buoyancy of the water drives the baffle to open and close.

[0011] Furthermore, the pneumatic sealing assembly consists of a conical plug, a spring, and a fixing plate located above the partition. The conical plug is coaxially aligned with the conical hole on the partition, the fixing plate is fixed to the inner wall of the drain tank, and the two ends of the spring are elastically connected between the outer wall of the conical plug and the fixing plate. This assembly, in conjunction with the buoyancy assembly, utilizes the energy of the high-pressure airflow itself to drive the conical plug to close the conical hole after drainage is completed, forming an independent secondary seal.

[0012] Preferably, to improve the motion stability and operational reliability of the pneumatic sealing assembly, a limit rod is fixed to the outer wall of the conical plug, and a spring is sleeved on the outside of the limit rod. This limit rod provides precise guidance for the extension and retraction of the spring and the reciprocating motion of the conical plug, ensuring that the conical plug can rise stably under airflow impact and accurately return to its original position under spring force, thus preventing deflection or jamming.

[0013] Preferably, to ensure a more secure installation of the pneumatic sealing assembly, the fixing plate is fixedly connected to the inner wall of the second fixing block, which in turn is fixedly installed above the inner wall of the drain tank. This structure, using the second fixing block as an intermediate mounting base, provides stronger support rigidity for the entire assembly, ensuring that it can withstand repeated airflow impacts without loosening during long-term operation.

[0014] Preferably, as one specific implementation, the filtration mechanism includes a filter tank, a filter screen housed inside the filter tank, and a lower end cap threaded to the lower end of the filter tank. This structural combination clearly realizes the filtration function, and the lower end cap provides a convenient access for subsequent inspection and maintenance of the internal filter screen.

[0015] Preferably, to make filter replacement easier and faster, a threaded ring is fixedly connected to the inner wall of the filter tank, and the inner wall of the filter is threaded to the outer wall of the threaded ring. Compared with traditional snap-fit ​​or compression fixing methods, this internal and external threaded connection method allows the filter to be installed and removed with just a simple rotation operation, greatly reducing maintenance difficulty.

[0016] Preferably, the compressed air storage tank drainage device further includes a drain valve connected to the inlet of the filter mechanism. The drain valve, as the control valve connecting the entire drainage device to the main body of the storage tank, is used to manually or automatically initiate the drainage process and is a key interface for achieving systematic control.

[0017] Preferably, to clarify the installation connection relationship of the device, the other end of the drain valve is used to connect to the lower end of the tank body. This connection method allows the drainage device to be easily integrated as a standalone module into existing or newly built compressed air storage tank systems.

[0018] Preferably, in order to form a fully functional compressed air storage and processing system, the upper end of the tank body used in conjunction with this device is connected to an air inlet pipe, and the lower end is connected to an exhaust valve. The air inlet pipe and exhaust valve improve the gas input and venting functions of the air storage tank itself, making the application scenarios of this drainage device more complete.

[0019] This utility model has the following beneficial effects:

[0020] 1. This utility model, by setting up a buoyancy component consisting of a float, connecting rod, and baffle, and a pneumatic sealing component consisting of a conical plug and spring, utilizes the float to automatically control the opening and closing of the baffle for drainage as the water level rises and falls, and uses high-pressure airflow to push the conical plug to achieve instant sealing after drainage. This solves the problem of untimely sealing after drainage in existing drainage devices, which leads to high-pressure gas leakage. It achieves the technical effects of simple structure, reliable sealing, and effective prevention of energy waste.

[0021] 2. This utility model solves the problem in the prior art that impurities in the condensate can easily clog or damage the subsequent precision drain valve body by setting a filter mechanism with a replaceable filter screen at the front end of the drainage mechanism to pre-filter the incoming condensate. It achieves the technical effect of effectively filtering out impurities, protecting the core drainage components, improving the reliability of the device and extending its overall service life.

[0022] 3. This utility model solves the problems of complex structure and inconvenient filter element replacement in the prior art by designing the filter screen and lower end cover of the filter mechanism as threaded detachable structures. It achieves the technical effects of simple structure, convenient maintenance, quick cleaning or replacement of filter screen, and reduced later use costs. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a compressed air storage tank drainage device proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the drainage mechanism of a compressed air storage tank drainage device proposed in this utility model.

[0025] Figure 3 This is a schematic diagram of the filter mechanism of a compressed air storage tank drainage device proposed in this utility model.

[0026] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0027] Legend:

[0028] 1. Tank body; 2. Drainage mechanism; 201. Drainage tank; 202. First fixing block; 203. Connecting plate; 204. Baffle; 205. Connecting rod; 206. Float; 207. Partition; 208. Second fixing block; 209. Fixing plate; 210. Conical plug; 211. Spring; 212. Limiting rod; 3. Filtering mechanism; 301. Filter tank; 302. Lower end cover; 303. Filter screen; 304. Threaded ring; 4. Air inlet pipe; 5. Exhaust valve; 6. Drain valve; 7. Connecting pipe. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Example:

[0031] Please refer to Figures 1 to 4 This utility model provides a compressed air storage tank drainage device, which aims to solve the problems in the prior art where high-pressure gas leakage may occur after liquid water is discharged, or where the anti-leakage structure is complex and the manufacturing cost is high.

[0032] like Figure 1As shown, the compressed air storage tank drainage device includes a filter mechanism 3 and a drainage mechanism 2. The outlet of the filter mechanism 3 is connected to the inlet of the drainage mechanism 2 through a connecting pipe 7, so that the filtered liquid enters the drainage mechanism 2 from the filter mechanism 3. It also includes a tank body 1 for collecting and storing compressed air. The upper end of the tank body 1 is connected to the air inlet pipe 4, the lower end of the tank body 1 is connected to the exhaust valve 5, and the lower end of the tank body 1 is connected to the liquid inlet of the filter mechanism 3 through a drain valve 6.

[0033] like Figure 1 and Figure 2 As shown, the drainage mechanism 2 includes a drainage tank 201 and a partition 207 that divides the interior of the drainage tank 201. The partition 207 is fixedly connected to the inner wall of the drainage tank 201, dividing the interior of the drainage tank 201 into an upper space and a lower space. A conical hole is provided on the partition 207 to connect the upper space and the lower space. A first drain outlet is also provided below the partition 207 for the discharge of liquid.

[0034] The drainage mechanism 2 relies on the synergistic effect of its buoyancy component and pneumatic sealing component. The buoyancy component is responsible for sensing the water level and controlling the liquid discharge, while the pneumatic sealing component is responsible for quickly blocking the leakage of high-pressure gas after the liquid is discharged.

[0035] The buoyancy assembly includes a float 206, a first fixing block 202, a connecting plate 203, a baffle 204, and a connecting rod 205, all housed inside the drain tank 201. The first fixing block 202 is fixed to the inner wall of the drain tank 201, serving as a fulcrum for the rotation of the connecting plate 203. The connecting plate 203 is rotatably connected to the first fixing block 202, allowing it to rotate around it. The baffle 204 is fixed to one end of the connecting plate 203, its position corresponding to the first drain outlet below the partition 207. Rotation of the connecting plate 203 allows the baffle 204 to rotatably cover or expose the first drain outlet, thereby controlling liquid discharge. One end of the connecting rod 205 is rotatably connected to the float 206, and the other end is rotatably connected to the baffle 204. When the float 206 rises or falls under the buoyancy of the liquid inside the drain tank 201, the connecting rod 205 drives the baffle 204 to rotate accordingly, opening or closing the first drain outlet.

[0036] The pneumatic sealing assembly includes a conical plug 210, a spring 211, and a fixing plate 209. The conical plug 210 is located above the partition 207 and is coaxially arranged with the conical hole on the partition 207. It is used to instantly block the conical hole by air pressure after drainage is completed. The fixing plate 209 is fixed above the inner wall of the drainage tank 201 and serves as the fixing end of the spring 211. The two ends of the spring 211 are elastically connected to the outer wall of the conical plug 210 and the fixing plate 209, respectively. The function of the spring 211 is to reset the conical plug 210 when there is no high-pressure gas pushing, so that it is disengaged from the conical hole for the next drainage.

[0037] To implement the above plan more specifically, please refer to the following: Figure 2 , Figure 3 and Figure 4 A limiting rod 212 is fixedly connected to the outer wall of the conical plug 210 of the pneumatic sealing assembly. A spring 211 is sleeved on the outside of the limiting rod 212. This arrangement uses the limiting rod 212 to guide the reciprocating motion of the spring 211, ensuring that the conical plug 210 can move stably along its axial direction without deflection or jamming. A fixing plate 209 is fixedly connected to the inner wall of a second fixing block 208, which is fixedly installed above the inner wall of the drain tank 201. This structure, which is installed via the second fixing block 208, provides a stable mounting base for the entire pneumatic sealing assembly.

[0038] At the same time, such as Figure 3 As shown, the filtration mechanism 3 includes a filter tank 301, a filter screen 303 housed inside the filter tank 301, and a lower end cap 302 threadedly connected to the lower end of the filter tank 301. A threaded ring 304 is fixedly connected to the inner wall of the filter tank 301, and the inner wall of the filter screen 303 is threadedly connected to the outer wall of the threaded ring 304. This structure, in which both the threaded ring 304 and the lower end cap 302 are threadedly connected, ensures that when cleaning or replacing the filter screen 303 is required, the lower end cap 302 can be easily unscrewed and then the filter screen 303 can be unscrewed, greatly simplifying maintenance operations and improving the practicality of the device.

[0039] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0040] In a preferred embodiment, to ensure the stability and reliability of the pneumatic sealing assembly during long-term use, improve the movement accuracy of the conical plug 210, and prevent it from jamming, a limiting rod 212 is fixedly connected to the outer wall of the conical plug 210, and a spring 211 is sleeved on the outside of the limiting rod 212. The limiting rod 212 provides precise guidance for the compression and extension movements of the spring 211, ensuring that the spring 211 always applies force along the axis of the conical plug 210, thereby enabling the conical plug 210 to stably align with the conical hole for plugging and resetting.

[0041] As another preferred embodiment, to provide stronger and more reliable support, the fixing plate 209 is fixedly connected to the inner wall of the second fixing block 208, which is fixedly installed above the inner wall of the drain tank 201. This tiered fixing method allows the fixing plate 209 to be more securely installed inside the drain tank 201, providing stable support for the spring 211 and the conical plug 210, maintaining structural integrity and operational accuracy even under the impact of high-pressure airflow.

[0042] As another preferred embodiment, in order to facilitate the maintenance of the device and the replacement of the filter screen 303, the filter mechanism 3 includes a filter tank 301, a filter screen 303 housed inside the filter tank 301, and a lower end cap 302 threadedly connected to the lower end of the filter tank 301. This threaded lower end cap 302 design allows operators to quickly and easily unscrew the end cap 302 to inspect or replace the internal filter screen 303 without using special tools, significantly improving the maintainability of the device.

[0043] In another preferred embodiment, to more efficiently replace the filter screen 303, a threaded ring 304 is fixedly connected to the inner wall of the filter canister 301, and the inner wall of the filter screen 303 is threadedly connected to the outer wall of the threaded ring 304. This double threaded connection design not only ensures the stability of the filter screen 303 during operation, but also allows the filter screen 303 to be directly disassembled or installed by rotation during replacement, avoiding additional fasteners or clips and further simplifying the replacement process.

[0044] In another preferred embodiment, to integrate this drainage device into the compressed air storage tank system, a drain valve 6 is connected to the inlet of the filter mechanism 3. The drain valve 6 serves as a manually or automatically controlled water outlet and is connected to the filter mechanism 3, allowing the condensate in the storage tank to first enter the filter mechanism 3 for pretreatment through the drain valve 6, thus achieving a smooth connection of the entire drainage process.

[0045] As another preferred embodiment, to more fully demonstrate the application scenario of the device, the other end of the drain valve 6 is used to connect to the lower end of the pipe of the tank body 1. This connection method clarifies the physical connection between the drain device and the core gas storage equipment tank body 1, enabling the device to directly receive the condensate collected at the bottom of the tank body 1.

[0046] As a final preferred embodiment, the upper end of the tank body 1 is connected to an air inlet pipe 4, and the lower end of the tank body 1 is also connected to an exhaust valve 5. The air inlet pipe 4 is used to introduce compressed air into the tank body 1, and the exhaust valve 5 is used to discharge the gas inside the tank under specific circumstances (such as maintenance or venting). These pipe interfaces improve the connection between the entire device and the external environment, making it a fully functional mechanism.

[0047] The working principle of this compressed air storage tank drainage device is as follows:

[0048] First, when the condensate accumulated in the tank 1 needs to be drained, the drain valve 6 is opened. The condensate flows into the filter tank 301 of the filter mechanism 3 under the action of gravity and air pressure. The water flows through the filter screen 303, where large particles are effectively intercepted. The filtered clean water then enters the drain tank 201 of the drain mechanism 2 through the connecting pipe 7.

[0049] Secondly, as water continuously enters the drain tank 201, its internal water level rises. The float 206 rises under buoyancy and, through the rotating connecting rod 205, pushes the baffle 204. The baffle 204, driven by the connecting plate 203, rotates around the first fixed block 202, thereby opening the first drain outlet located below the partition 207, allowing liquid to be discharged. When the inflow is too large, causing the water level to rise rapidly, water not only flows out of the first drain outlet but also overflows the partition 207 and is discharged more quickly through the conical hole above it, achieving rapid drainage.

[0050] Secondly, when the liquid water inside the drain tank 201 is basically drained, the water level drops, causing the float 206 to sink. This, in turn, drives the baffle 204 to rotate via the connecting rod 205, closing the first drain outlet. Following the liquid water, high-pressure compressed air attempts to escape through the conical orifice. At this moment, the powerful airflow instantly pushes the conical plug 210 located above the conical orifice, causing it to overcome the elastic force of the spring 211 and rise upwards, tightly blocking the conical orifice, forming a reliable pneumatic seal, thus effectively preventing compressed air leakage. When new condensate re-enters the drain tank 201, and the internal pressure returns to equilibrium, the restoring force of the spring 211 pushes the conical plug 210 away from the conical orifice, resetting it and preparing it for the next drainage process. Through this synergistic effect of the buoyancy component and the pneumatic sealing component, this invention solves the problem of high-pressure gas leakage caused by untimely sealing after drainage in the prior art.

[0051] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A compressed air storage tank drainage device, comprising a filter mechanism (3) and a drainage mechanism (2), wherein the outlet of the filter mechanism (3) is connected to the inlet of the drainage mechanism (2) via a connecting pipe (7); The drainage mechanism (2) includes a drainage tank (201) and a partition (207) that divides the inner cavity of the drainage tank (201); The partition (207) is fixedly connected to the inner wall of the drain tank (201), and a conical hole is provided on it. A first drain outlet is also provided below the partition (207). Its features are, The drainage mechanism (2) also includes a buoyancy component and a pneumatic sealing component; The buoyancy assembly includes a float (206) housed inside the drain tank (201), a first fixing block (202), a connecting plate (203), a baffle (204), and a connecting rod (205). The first fixing block (202) is fixed to the inner wall of the drain tank (201). The connecting plate (203) is rotatably connected to the first fixing block (202). The baffle (204) is fixed to one end of the connecting plate (203). The position of the baffle (204) corresponds to the first drain outlet and can rotatably cover or expose the first drain outlet. One end of the connecting rod (205) is rotatably connected to the float (206), and the other end is rotatably connected to the baffle (204). The pneumatic sealing assembly includes a conical plug (210), a spring (211), and a fixing plate (209). The conical plug (210) is located above the partition plate (207) and is coaxially arranged with the conical hole. The fixing plate (209) is fixed to the upper inner wall of the drain tank (201). The two ends of the spring (211) are elastically connected to the outer wall of the conical plug (210) and the fixing plate (209), respectively.

2. The compressed air storage tank drainage device according to claim 1, characterized in that, A limiting rod (212) is fixed to the outer wall of the conical plug (210), and the spring (211) is sleeved on the outside of the limiting rod (212).

3. The compressed air storage tank drainage device according to claim 1, characterized in that, The fixing plate (209) is fixedly connected to the inner wall of the second fixing block (208), and the second fixing block (208) is fixedly installed above the inner wall of the drain tank (201).

4. The compressed air storage tank drainage device according to claim 1, characterized in that, The filtration mechanism (3) includes a filter tank (301), a filter screen (303) housed inside the filter tank (301), and a lower end cap (302) threaded to the lower end of the filter tank (301).

5. The compressed air storage tank drainage device according to claim 4, characterized in that, The inner wall of the filter tank (301) is fixedly connected to a threaded ring (304), and the inner wall of the filter screen (303) is threadedly connected to the outer wall of the threaded ring (304).

6. The compressed air storage tank drainage device according to claim 1, characterized in that, The inlet of the filtration mechanism (3) is connected to a drain valve (6).

7. The compressed air storage tank drainage device according to claim 6, characterized in that, The other end of the drain valve (6) is used to connect to the lower end of the tank body (1).

8. The compressed air storage tank drainage device according to claim 7, characterized in that, The upper end of the tank body (1) is connected to an air inlet pipe (4), and the lower end is connected to an exhaust valve (5).

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