Anti-rust automatic drain valve
By using a combination of overflow spring and overflow steel balls in the automatic drain valve, combined with the anti-rust design of the injection molded parts, the problem of too low air pressure in the gas storage tank is solved, ensuring the air pressure required for the braking force, and improving the anti-rust effect of the drain valve.
Patent Information
- Application Number
- CN202422053444.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-23
AI Technical Summary
When the air pressure of the gas storage tank is lower than the safety setting value, the valve body and valve core may leak, resulting in the air pressure in the gas storage tank being too low and it is difficult to ensure the air pressure required by the braking force.
An anti-rust automatic drain valve is designed, using a combination of overflow spring and overflow steel balls. The elastic force of the overflow spring makes the overflow steel balls block the opening on the overflow valve body to prevent leakage of the overflow valve body and the valve core. At the same time, the injection molding parts are wrapped around the inner wall of the drain valve body through the injection molding process to prevent rust.
It effectively prevents the problem of too low air pressure in the gas storage tank, ensures the air pressure required for the braking force, and significantly improves the anti-rust effect of the drain valve through the use of injection molded parts.
Smart Images
Figure CN222937312U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drain valves, and more specifically, to an anti-corrosion automatic drain valve. Background Art
[0002] An automatic drain valve is a device that can automatically drain accumulated water in equipment or systems, and is mainly applied in fields such as urban, building, enterprise water supply and drainage projects, industrial and domestic sewage treatment, and water conservancy projects. Among them, on a gas storage tank, an automatic drain valve also needs to be installed to avoid the accumulation of water vapor in the gas storage tank. However, the existing technology has the following deficiencies in use:
[0003] When the air pressure in the gas storage tank is lower than the safety set value, the valve body and the valve core may leak, resulting in too low air pressure in the gas storage tank, making it difficult to ensure the air pressure required for braking force.
[0004] Therefore, there is an urgent need for an anti-corrosion automatic drain valve to solve the above problems. Summary of the Utility Model
[0005] The purpose of the utility model is to address the problem that when the air pressure in the gas storage tank is lower than the safety set value, the valve body and the valve core may leak, resulting in too low air pressure in the gas storage tank, making it difficult to ensure the air pressure required for braking force.
[0006] To achieve the above-mentioned invention purpose, the utility model provides the following technical solutions:
[0007] An anti-corrosion automatic drain valve to improve the above problems.
[0008] Specifically, this application is as follows:
[0009] An anti-corrosion automatic drain valve includes a drain valve body, a joint is threadedly connected to the drain valve body, a filter screen is installed in the joint, an overflow valve is installed in the drain valve body, the overflow valve includes an overflow valve body, an overflow steel ball and an overflow spring, an injection molded part is provided on the inner wall of the drain valve body, a compression spring is fixedly connected to the injection molded part, a retaining ring is fixedly connected to the top of the compression spring, a valve core is provided on the top of the retaining ring, a guiding port is opened on the injection molded part, a bottom cover is provided in the drain valve body, the bottom cover is located inside the injection molded part, a drain port is opened at the center of the bottom cover, a snap ring is clamped on the bottom side of the injection molded part, and a water storage cavity is provided in the drain valve body.
[0010] As a preferred technical solution of this application, an O-ring is sleeved on the injection molded part.
[0011] As a preferred technical solution of this application, the overflow steel ball is located inside the overflow valve body.
[0012] As a preferred technical solution of the present application, the overflow steel ball is fixedly installed at the upper end of the overflow spring.
[0013] As a preferred technical solution of the present application, the bottom of the joint fits with the drain valve body.
[0014] As a preferred technical solution of the present application, the valve core abuts against the injection molded part.
[0015] As a preferred technical solution of the present application, the overflow valve body is fixedly connected to the injection molded part.
[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0017] In the solution of the present application:
[0018] 1. When the air pressure in the air storage tank is lower than the safety set value, due to the elastic force of the overflow spring, the overflow steel ball will be located in the overflow valve body, blocking the opening on the overflow valve body, so that the overflow valve will not open, preventing the leakage between the overflow valve body and the valve core from causing the air pressure in the air storage tank to be too low, ensuring the air pressure required for braking force, and solving the problem in the prior art that when the air pressure in the air storage tank is lower than the safety set value, the valve body and the valve core may leak, resulting in too low air pressure in the air storage tank and it is difficult to ensure the air pressure required for braking force.
[0019] 2. The injection molded part adopts the injection molding process. By wrapping the plastic on the inner wall of the drain valve body, it prevents the inner wall of the drain valve body from rusting, achieving a good anti-rust effect.
[0020] 3. A guiding port is provided at the upper end of the valve body, which can make the valve core move coaxially and prevent jamming. Description of the Drawings
[0021] Figure 1 It is a schematic diagram of the overall structure of an anti-rust automatic drain valve provided by the present application.
[0022] Figure 2 It is a front view structure schematic diagram of an anti-rust automatic drain valve provided by the present application.
[0023] Figure 3 It is a sectional structure schematic diagram of an anti-rust automatic drain valve provided by the present application.
[0024] Figure 4 For Figure 3 The enlarged structure schematic diagram of part A in
[0025] Labels in the figure:
[0026] 1. Drain valve body; 2. Connector; 3. Filter screen; 4. Overflow valve; 5. Overflow valve body; 6. Overflow steel ball; 7. Overflow spring; 8. Injection molded part; 9. Compression spring; 10. Retaining ring; 11. Spool; 12. Guide port; 13. Bottom cover; 14. Drain port; 15. Snap ring; 16. Water storage cavity; 17. O-ring. Detailed implementation manners
[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model.
[0028] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model claimed, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.
[0029] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.
[0030] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.
[0032] Embodiment:
[0033] As Figures 1-4As shown in the figure, an anti-rust automatic drain valve proposed in this embodiment includes a drain valve body 1. A joint 2 is threadedly connected to the drain valve body 1. The drain valve body 1 is installed at the bottom end of the gas storage tank through the joint 2. A filter screen 3 is installed inside the joint 2. An overflow valve 4 is installed inside the drain valve body 1. The overflow valve 4 includes an overflow valve body 5, an overflow steel ball 6, and an overflow spring 7. An injection molded part 8 is provided on the inner wall of the drain valve body 1. The injection molded part 8 adopts an injection molding process. By wrapping plastic around the inner wall of the drain valve body 1, it prevents the inner wall of the drain valve body 1 from rusting, achieving a good anti-rust effect. A compression spring 9 is fixedly connected to the injection molded part 8. The top end of the compression spring 9 is fixedly connected to a retaining ring 10. A valve core 11 is provided on the top of the retaining ring 10. When the air pressure in the gas storage tank is lower than the safety set value, due to the elastic force of the overflow spring 7, the overflow steel ball 6 is located inside the overflow valve body 5, blocking the opening on the overflow valve body 5. Thus, the overflow valve 4 will not open, preventing the leakage between the overflow valve body 5 and the valve core 11 from causing the air pressure in the gas storage tank to be too low and ensuring the air pressure required for braking force. A guiding port 12 is opened on the injection molded part 8. A bottom cover 13 is provided inside the drain valve body 1. The bottom cover 13 is located inside the injection molded part 8. A drain port 14 is opened at the center of the bottom cover 13. A snap ring 15 is clamped on the bottom side of the injection molded part 8. A water storage cavity 16 is provided inside the drain valve body 1.
[0034] As Figure 3 shown, an O-ring 17 is sleeved on the injection molded part 8.
[0035] As Figure 3 and Figure 4 shown, when the overflow steel ball 6 is located inside the overflow valve body 5 and during the pressurization process of the gas in the gas storage tank, the pressure in the gas storage tank is higher than the pressure in the water storage cavity 16. The compressed gas passes through the filter screen 3. The compressed gas can only pass through when it is higher than the set pressure of the overflow valve 4. The compressed gas causes the overflow steel ball 6 to move downward, and the overflow spring 7 is compressed and deformed. Then, the compressed gas pushes the valve core 11 and the compression spring 9 downward to squeeze the bottom cover 13, blocking the drain port 14 on the bottom cover 13.
[0036] As Figure 4 shown, the overflow steel ball 6 is fixedly installed at the upper end of the overflow spring 7. When the air pressure in the gas storage tank is lower than the safety set value, due to the elastic force of the overflow spring 7, the overflow steel ball 6 is located inside the overflow valve body 5, blocking the opening on the overflow valve body 5. Thus, the overflow valve 4 will not open.
[0037] As Figure 3 shown, the bottom of the joint 2 is in contact with the drain valve body 1.
[0038] As Figure 3 shown, the valve core 11 abuts against the injection molded part 8.
[0039] As Figure 3 and Figure 4 shown, the overflow valve body 5 is fixedly connected to the injection molded part 8.
[0040] Specifically, when the anti-rust automatic drain valve is in use: the drain valve body 1 is installed at the bottom end of the gas storage tank through the joint 2. During the pressurization process of the gas in the gas storage tank, the pressure of the gas storage tank is higher than the pressure of the water storage cavity 16. The compressed gas passes through the filter screen 3. The compressed gas can only pass through when it is higher than the set pressure of the overflow valve 4. The compressed gas makes the overflow steel ball 6 move downward, and the overflow spring 7 is compressed and deformed. Then the compressed gas pushes the valve core 11 and the compression spring 9 downward through the guiding port 12 to squeeze the bottom cover 13, blocking the drain port 14 on the bottom cover 13. Water impurities accumulate in the water storage cavity 16. When the gas in the gas storage tank is decompressed, the compressed gas in the water storage cavity 16 is greater than or equal to the pressure in the gas storage tank. Due to the elastic force of the compression spring 9, the valve core 11 is pushed upward, so that the valve core 11 is separated from the drain port 14 on the bottom cover 13. The water impurities in the water storage cavity 16 are discharged through the drain port 14 on the bottom cover 13. When the air pressure in the gas storage tank is lower than the safety set value, due to the elastic force of the overflow spring 7, the overflow steel ball 6 is located in the overflow valve body 5, blocking the opening on the overflow valve body 5, so that the overflow valve 4 will not open, preventing the leakage of the overflow valve body 5 and the valve core 11 from causing the air pressure in the gas storage tank to be too low and ensuring the air pressure required for braking force. The injection molding part 8 adopts the injection molding process. By wrapping the plastic on the inner wall of the drain valve body 1, the inner wall of the drain valve body 1 is prevented from rusting, achieving a good anti-rust effect.
[0041] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.
Claims
1. A rust-proof automatic drain valve, comprising a drain valve body (1), characterized in that: The drain valve body (1) is threadedly connected with a joint (2), a filter screen (3) is installed in the joint (2), an overflow valve (4) is installed in the drain valve body (1), the overflow valve (4) comprises an overflow valve body (5), an overflow steel ball (6) and an overflow spring (7), an injection molded part (8) is provided on the inner wall of the drain valve body (1), a compression spring (9) is fixedly connected to the injection molded part (8), and the top of the compression spring (9) is fixedly connected to the A retaining ring (10) is connected, a valve core (11) is provided on the top of the retaining ring (10), a guide opening (12) is provided on the drain valve body (1), a bottom cover (13) is provided inside the drain valve body (1), the bottom cover (13) is located inside the injection molded part (8), a drain opening (14) is provided at the center of the bottom cover (13), a retaining spring (15) is clamped on the bottom side of the injection molded part (8), and a water storage chamber (16) is provided inside the drain valve body (1).
2. The anti-corrosion automatic drain valve according to claim 1, characterized in that: The injection molded part (8) is sleeved with a mold ring (17).
3. The anti-corrosion automatic drain valve according to claim 1, characterized in that: The overflow steel ball (6) is located inside the overflow valve body (5).
4. The anti-corrosion automatic drain valve according to claim 1, characterized in that: The overflow steel ball (6) is fixedly mounted on the upper end of the overflow spring (7).
5. The anti-corrosion automatic drain valve according to claim 1, characterized in that: The bottom of the joint (2) fits the drain valve body (1).
6. The anti-corrosion automatic drain valve according to claim 1, characterized in that: The valve core (11) and the injection molded part (8) are in conflict with each other.
7. The anti-corrosion automatic drain valve according to claim 1, characterized in that: The overflow valve body (5) is fixedly connected to the injection molded part (8).