Drain valve with anti-blocking mechanism

Abstract

The utility model discloses a drain valve with an anti-blocking mechanism, which comprises a valve body, an upper connecting seat is arranged above the valve body through a detachable connecting mechanism, the upper connecting seat is connected with a water inlet pipe, the bottom of the valve body is connected with a lower connecting seat, and the bottom of the lower connecting seat is provided with a water outlet pipe. An elastic connecting piece is arranged above the lower connecting seat, the elastic connecting piece comprises an elastic rod and a buckle, the buckle is correspondingly connected to a trapezoidal clamping groove of an inner cavity of the valve body in a clamped mode, a supporting frame is arranged on the lower connecting seat, a semicircular filter screen with an opening in the top is arranged on the supporting frame, and a cleaning plate is arranged in the semicircular filter screen in a clamped mode. The drain valve is scientific and reasonable in structural design, the push rod is driven by the air cylinder to drive the cleaning plate to reciprocate, impurities deposited on the filter screen are pushed to the drain outlet, the problems that a filter screen of a traditional drain valve is prone to being blocked and inconvenient to clean are solved, and meanwhile the connecting stability and the sealing performance of the valve body and the lower connecting base are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of valve equipment technology, specifically a drain valve with an anti-clogging mechanism. Background Technology

[0002] A steam trap, also known as a drain valve or condensate trap, is a valve designed to quickly discharge condensate, air, and carbon dioxide from a steam system while automatically preventing steam leakage to the greatest extent possible. There are many types of steam traps, each with different performance characteristics. When selecting a steam trap, the primary consideration should be its performance characteristics that optimally meet the operating requirements of the steam heating equipment, followed by other objective conditions. This approach ensures the correct and effective selection of the appropriate steam trap. Traditional steam traps generally suffer from the following drawbacks: water flows inside the trap, and after filtration, impurities remain inside, requiring frequent shutdowns for cleaning. The filter screen is often fixed to the valve body, making disassembly difficult. Cleaning or replacing the filter screen requires complete disassembly of the equipment, which is time-consuming and labor-intensive. Relying on manual cleaning of filter screen impurities leads to high maintenance costs and safety hazards. Therefore, we propose a steam trap with an anti-clogging mechanism. Utility Model Content

[0003] The purpose of this invention is to provide a drain valve with an anti-clogging mechanism to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a drain valve with an anti-clogging mechanism, comprising a valve body, an upper connecting seat provided above the valve body via a detachable connecting mechanism, an inlet pipe connected to the upper connecting seat, a lower connecting seat connected to the bottom of the valve body, an outlet pipe provided at the bottom of the lower connecting seat, an elastic connector provided above the lower connecting seat, the elastic connector comprising an elastic rod and a buckle, the buckle being correspondingly engaged with a trapezoidal groove in the inner cavity of the valve body, a support frame provided on the lower connecting seat, a semi-circular filter screen with a top opening provided on the support frame, a cleaning plate being fitted inside the semi-circular filter screen, a push rod being detachably connected to one end of the cleaning plate, a cylinder being connected to one end of the push rod, a drain port being provided on the side wall of the valve body at one end of the semi-circular filter screen, and a drain pipe being provided outside the drain port.

[0005] In the above scheme, the connecting mechanism includes a threaded connection part provided below the upper connecting seat, and the threaded connection part is screwed into the threaded groove on the valve body.

[0006] In the above scheme, a water outlet valve is installed on the water outlet pipe, and the bottom outlet of the water inlet pipe is located above the semi-circular filter screen.

[0007] In the above scheme, a sealing ring is provided at the connection between the valve body and the lower connecting seat.

[0008] In the above scheme, the semi-circular filter screen includes a coarse filter layer and a fine filter layer, and the semi-circular filter screen is attracted to the support frame by a magnetic block.

[0009] In the above scheme, a drain valve is installed on the drain pipe.

[0010] In the above scheme, the outer shell of the cylinder is installed inside a waterproof cover.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This type of steam trap with an anti-clogging mechanism has a simple and reasonable structural design and strong practicality. The cylinder drives the push rod to drive the cleaning plate to reciprocate, pushing the impurities deposited on the filter screen to the drain port, which solves the problem of easy clogging and inconvenient cleaning of traditional steam trap filters. The cooperation between the elastic connector and the trapezoidal groove, as well as the setting of the sealing ring, ensures the connection stability and sealing of the valve body and the lower connecting seat, avoiding leakage problems caused by vibration or pressure fluctuations, and improving the long-term reliability of the steam trap. The detachable structure of the threaded connection and the threaded groove, combined with the method of fixing the filter screen with a magnetic block, realizes the quick disassembly and assembly of the upper connecting seat and the semi-circular filter screen, which is convenient for maintenance and replacement of the filter screen layer and reduces maintenance costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the semi-circular filter structure of this utility model.

[0014] In the diagram: 1. Valve body; 11. Upper connecting seat; 12. Threaded connection part; 13. Threaded groove; 14. Inlet pipe; 15. Lower connecting seat; 16. Outlet pipe; 17. Outlet valve; 18. Elastic rod; 19. Buckle; 2. Trapezoidal slot; 21. Support frame; 22. Semi-circular filter screen; 23. Magnetic block; 24. Cleaning plate; 25. Push rod; 26. Cylinder; 27. Drain port; 28. Drain pipe; 29. ​​Drain valve. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-2This utility model provides a technical solution: a drain valve with an anti-clogging mechanism, comprising a valve body 1, an upper connecting seat 11 provided on the upper part of the valve body 1 via a detachable connecting mechanism, an inlet pipe 14 connected to the upper connecting seat 11, a lower connecting seat 15 connected to the bottom of the valve body 1, an outlet pipe 16 provided at the bottom of the lower connecting seat 15, and an elastic connector provided above the lower connecting seat 15, the elastic connector comprising an elastic rod 18 and a buckle 19. The buckle 19 is correspondingly snapped into the trapezoidal slot 2 inside the valve body 1. A support frame 21 is provided on the lower connecting seat 15. A semi-circular filter screen 22 with a top opening is provided on the support frame 21. A cleaning plate 24 is snapped into the semi-circular filter screen 22. A push rod 25 is detachably connected to one end of the cleaning plate 24. A cylinder 26 is connected to one end of the push rod 25. A drain port 27 is opened on the side wall of the valve body 1 at one end of the semi-circular filter screen 22. A drain pipe 28 is provided on the outside of the drain port 27.

[0017] In the above scheme, the connecting mechanism includes a threaded connection part 12 disposed below the upper connecting seat 11, which is screwed into a threaded groove 13 on the valve body 1. The modular installation of the upper connecting seat 11 and the valve body is achieved through the engagement of the threaded connection part 12 with the threaded groove 13 of the valve body 1. This design facilitates disassembly, maintenance, or replacement of components, such as cleaning impurities from the inlet pipe 14 or inspecting the internal structure of the valve body.

[0018] In the above scheme, a water outlet valve 17 is installed on the water outlet pipe 16, and the bottom outlet of the water inlet pipe 14 is located above the semi-circular filter screen 22. The bottom outlet of the water inlet pipe 14 is located above the semi-circular filter screen 22, so that the condensate water is evenly covered on the surface of the filter screen by gravity, avoiding local impact that could cause the filter screen to deform, and at the same time enhancing the sedimentation efficiency of impurities.

[0019] In the above scheme, a sealing ring is provided at the connection between the valve body 1 and the lower connecting seat 15. The elastic deformation of the elastic rod 18 allows for slight displacement between the lower connecting seat 15 and the valve body 1 during vibration or thermal expansion and contraction, while the inclined surface design of the trapezoidal groove 2 ensures that the buckle 19 automatically locks under force, avoiding leakage problems caused by loose connection.

[0020] A sealing ring is added at the connection between valve body 1 and lower connecting seat 15. The sealing performance under high pressure conditions is further improved by elastically compressing and filling the gap, which is suitable for the high temperature and high pressure environment of steam system.

[0021] In the above scheme, the semi-circular filter 22 includes a coarse filter layer and a fine filter layer, and the semi-circular filter 22 is attracted to the support frame 21 by a magnetic block 23. The coarse filter layer intercepts large particles of impurities such as pipe rust, while the fine filter layer filters fine particles such as sediment. The combination of the two can extend the filter life and reduce the frequency of clogging.

[0022] The magnetic block 23 allows the filter screen 22 to be quickly disassembled and installed, making it easy to clean or replace the filter layer, while avoiding the corrosion and jamming problems caused by traditional bolt fixing.

[0023] The cylinder 26 drives the cleaning plate 24 to reciprocate along the inner wall of the semi-circular filter screen 22 via the push rod 25, pushing the attached impurities into the drain port 27.

[0024] In the above scheme, a drain valve 29 is installed on the drain pipe 28. The drain valve 29 can manually or automatically control the timing of the drain, and in conjunction with the periodic cleaning action of the cleaning plate 24, it can achieve centralized discharge of impurities and avoid frequent manual cleaning.

[0025] The outlet valve 17 is used to regulate the drainage flow rate and maintain stable drainage when the system pressure fluctuates, preventing the filter screen from being deformed due to excessive back pressure.

[0026] In the above solution, the outer casing of the cylinder 26 is installed inside a waterproof cover. The waterproof cover protects the cylinder casing and prevents steam condensation from entering and causing cylinder corrosion and failure.

[0027] Working principle:

[0028] This type of steam trap with an anti-clogging mechanism allows condensate to enter the valve body 1 through the inlet pipe 14. It first impacts the coarse filter layer of the semi-circular filter screen 22, intercepting large particles of impurities. The liquid continues to pass through the fine filter layer, further filtering out fine particles. The filtered clean condensate flows through the gap in the support frame 21 into the lower connecting seat 15, and finally exits from the outlet pipe 16. The outlet valve 17 adjusts the drainage rate to match the system requirements. When impurities accumulate to a certain extent on the surface of the filter screen 22, the cylinder 26 is activated, and the push rod 25 pushes the cleaning plate 24 to move along the inner wall of the filter screen, scraping the impurities to the drain port 27 area. The drain valve 29 opens, and the impurities are discharged from the system through the drain pipe 28 with the high-speed fluid. After the cleaning plate is reset, the drain valve is closed. When the system pressure fluctuates or the temperature changes, the elastic rod 18 absorbs stress through deformation. The cooperation between the buckle 19 and the trapezoidal slot 2 ensures a stable connection between the lower connecting seat 15 and the valve body 1, preventing the interface from loosening. The filter screen 22 can be quickly removed by the magnetic block 23, supporting online cleaning or replacement and reducing downtime.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drain valve having an anti-clogging mechanism comprising a valve body (1), characterized in that: The upper part of the valve body (1) is provided with an upper connecting seat (11) through a detachable connecting mechanism, a water inlet pipe (14) is connected to the upper connecting seat (11), the bottom of the valve body (1) is connected with a lower connecting seat (15), the bottom of the lower connecting seat (15) is provided with a water outlet pipe (16), the upper part of the lower connecting seat (15) is provided with an elastic connecting piece, the elastic connecting piece comprises an elastic rod (18) and a buckle (19), the buckle (19) is correspondingly clamped on the trapezoidal clamping groove (2) in the inner cavity of the valve body (1), a supporting frame (21) is arranged on the lower connecting seat (15), the supporting frame (21) is provided with a half-round filter screen (22) with an open top, a cleaning plate (24) is clamped in the half-round filter screen (22), one end of the cleaning plate (24) is detachably connected with a push rod (25), one end of the push rod (25) is connected with a pneumatic cylinder (26), a sewage outlet (27) is arranged on the side wall of the valve body (1) at one end of the half-round filter screen (22), and a sewage pipe (28) is arranged outside the sewage outlet (27).

2. A drain valve having an anti-clogging mechanism according to claim 1, wherein: The connecting mechanism comprises a threaded connecting portion (12) arranged below the upper connecting seat (11), and the threaded connecting portion (12) is screwed in the threaded groove (13) on the valve body (1).

3. A drain valve having an anti-clogging mechanism as defined in claim 1, wherein: A water outlet valve (17) is mounted on the water outlet pipe (16), and the bottom end outlet of the water inlet pipe (14) is arranged above the half-round filter screen (22).

4. A drain valve having an anti-clogging mechanism as defined in claim 1, wherein: A sealing ring is arranged at the connection between the valve body (1) and the lower connecting seat (15).

5. A drain valve having an anti-clogging mechanism as defined in claim 1, wherein: The half-round filter screen (22) comprises a coarse filter layer and a fine filter layer, and the half-round filter screen (22) is attracted to the supporting frame (21) through a magnetic block (23).

6. A drain valve having an anti-clogging mechanism as defined in claim 1, wherein: A sewage valve (29) is arranged on the sewage pipe (28).

7. A drain valve having an anti-clogging mechanism as defined in claim 1, wherein: The shell of the pneumatic cylinder (26) is mounted in a waterproof cover.

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