High-temperature corrugated pipe stop valve

Abstract

The utility model relates to the technical field of stop valves, and particularly discloses a high-temperature corrugated pipe stop valve which comprises a valve body, a detachable valve rod assembly is installed in the valve body, a valve cover connected through a screw is installed between the valve rod assembly and the valve body, and an impurity collecting assembly used for collecting fluid impurities is arranged below the valve body. A supporting assembly used for supporting the valve rod assembly is installed in the impurity collecting assembly, and a liquid inlet used for liquid feeding and a liquid outlet used for liquid discharging are fixedly formed in the left end and the right end of the valve body correspondingly. The impurity collecting assembly comprises a collecting pipe welded to the bottom of the valve body, the bottom of the collecting pipe is detachably connected with a sealing cover, and sealing screws penetrate through the four corners of the sealing cover. The sealing cover and the collecting pipe can be separated from each other, so that impurities in the collecting pipe are discharged outwards, the collecting pipe can be cleaned conveniently, and the situation that the impurities are accumulated in the valve body, so that the valve body is blocked, and normal movement of fluid is affected is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of stop valve especially is concerned with a high temperature bellows stop valve. BACKGROUND

[0002] The high temperature bellows stop valve is a pipeline valve using bellows as a sealing element, mainly composed of a valve body, a valve cover, a bellows, a valve stem and other components. The bellows is a kind of metal pipe material with advantages of plasticity, corrosion resistance, high temperature resistance and reliable sealing, and a valve seat is arranged inside or outside the bellows. The flow of fluid in the pipeline is controlled by adjusting the valve stem.

[0003] The existing high temperature bellows stop valve is designed to allow fluid to flow more smoothly in the valve and reduce flow resistance. The design allows the gasket between the valve shell and the valve cover and the packing around the valve stem to be stress-free. This can avoid long-term effects of medium pressure and temperature on them, thereby prolonging the service life and reducing the long-term leakage probability under medium pressure and temperature.

[0004] However, when the fluid flows from a low place to a higher place, impurities in the fluid are likely to hit the inner wall of the valve and stay in the low place. The bottom of the high temperature bellows stop valve is of an integrated structure, which is not convenient for discharging impurities. Over time, impurities are likely to accumulate in the valve, which may affect the normal use of the high temperature bellows stop valve. SUMMARY

[0005] The utility model discloses a high temperature bellows stop valve, which can separate the sealing cover from the collection pipe, thereby discharging impurities in the collection pipe outward, facilitating cleaning of the collection pipe, avoiding impurities accumulation in the interior of the valve body, and preventing the valve body from being blocked to affect the normal movement of the fluid.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a high temperature bellows stop valve, comprising a valve body, a detachable valve stem assembly is installed in the interior of the valve body, a valve cover connected by a screw is installed between the valve stem assembly and the valve body, a impurity collection assembly for collecting fluid impurities is arranged below the valve body, a supporting assembly for supporting the valve stem assembly is installed in the interior of the impurity collection assembly, liquid inlet ports for liquid inlet and liquid outlet ports for liquid outlet are respectively arranged at the left and right ends of the valve body.

[0007] The impurity collection assembly comprises a collection pipe welded at the bottom of the valve body, and a sealing cover detachably connected to the bottom of the collection pipe. Sealing screws are arranged at the four corners of the sealing cover and are threadedly connected with the collection pipe.

[0008] Preferably, a handwheel is fixedly provided on the top of the valve stem assembly, and the valve stem assembly includes a threaded rod passing through the valve body, and a bracket is externally threaded to the threaded rod.

[0009] Preferably, a valve stem body is fixedly welded to the bottom of the threaded rod, and a valve core is fixedly provided at the end of the valve stem body. A bellows is sleeved on the outside of the valve stem body, and a fixed cover is provided on the top of the bellows and sleeved on the outside of the valve stem body.

[0010] Preferably, the bottom of the bellows is provided with a limiting plate welded to the inside of the valve body, the valve stem body passes through the inside of the limiting plate, and the diameter of the limiting plate is larger than the diameter of the bellows.

[0011] Preferably, a flow hole is provided below the limiting plate and is located inside the valve body, and the flow hole is adapted to the size of the valve core.

[0012] Preferably, the support assembly includes a support plate installed below the valve core, and a sealing ball is fixedly provided at the bottom of the support plate. An adjusting screw is welded to the bottom of the sealing ball, and the size of the sealing ball is adapted to the connection between the valve body and the collecting pipe.

[0013] Preferably, the adjusting screw is threadedly connected to the sealing cover, and a support spring is provided between the sealing ball and the sealing cover. The two ends of the support spring abut against the sealing ball and the sealing cover respectively, and the adjusting screw passes through the interior of the support spring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By rotating the sealing screw through the impurity collection component, the sealing cover and the collection tube can be separated, thereby discharging the impurities in the collection tube to the outside, which facilitates cleaning of the collection tube and prevents impurities from accumulating inside the valve body and causing blockage of the valve body, thus affecting the normal flow of fluids.

[0016] 2. Through the set support components, the sealing ball drives the support plate to move upward, which can support the valve core and improve the stability of the valve core. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is an overall structural view of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the support component of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Enlarged view of A in the middle;

[0021] Figure 4 This is a schematic diagram of the valve stem body of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the valve body of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Valve body; 2. Outlet; 3. Support assembly; 301. Adjusting screw; 302. Sealing ball; 303. Support plate; 304. Support spring; 4. Impurity collection assembly; 401. Sealing cover; 402. Sealing screw; 403. Collection pipe; 5. Valve stem assembly; 501. Threaded rod; 502. Fixing cover; 503. Bellows; 504. Valve stem body; 505. Valve core; 6. Bracket; 7. Valve cover; 8. Handwheel; 9. Limiting plate; 10. Flow hole; 11. Inlet. Detailed Implementation

[0025] 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.

[0026] This utility model provides a technical solution:

[0027] Please see Figures 1 to 5 A high-temperature bellows shut-off valve includes a valve body 1, a detachable valve stem assembly 5 installed inside the valve body 1, and a valve cover 7 connected to the valve body 1 by screws. An impurity collection assembly 4 for collecting fluid impurities is provided below the valve body 1. A support assembly 3 for supporting the valve stem assembly 5 is installed inside the impurity collection assembly 4. An inlet 11 for liquid inlet and an outlet 2 for liquid outlet are fixedly provided at the left and right ends of the valve body 1, respectively.

[0028] The impurity collection assembly 4 includes a collection pipe 403 welded to the bottom of the valve body 1, and a sealing cap 401 is detachably connected to the bottom of the collection pipe 403. Sealing screws 402 are provided at the four corners of the sealing cap 401, and the sealing screws 402 are threadedly connected to the collection pipe 403.

[0029] By adopting the above technical solution, the impurity collection component 4 is located at the bottom of the valve body 1. When the fluid enters the outlet 2 through the inlet 11 and is discharged outward from the outlet 2, the impurities in the fluid will accumulate at the connection between the collection pipe 403 and the valve body 1. By rotating the sealing screw 402, the sealing cover 401 and the collection pipe 403 can be separated from each other, thereby discharging the impurities in the collection pipe 403 outward, which facilitates the cleaning of the collection pipe 403 and avoids the accumulation of impurities inside the valve body 1, which would cause the valve body 1 to be blocked and affect the normal movement of the fluid.

[0030] Specifically, such as Figure 2 and Figure 4 As shown, a handwheel 8 is fixedly installed on the top of the valve stem assembly 5. The valve stem assembly 5 includes a threaded rod 501 that passes through the inside of the valve body 1, and a bracket 6 is threadedly connected to the outside of the threaded rod 501. A valve stem body 504 is fixedly welded to the bottom of the threaded rod 501, and a valve core 505 is fixedly installed at the end of the valve stem body 504. A bellows 503 is sleeved on the outside of the valve stem body 504, and a fixed cover 502 is sleeved on the top of the bellows 503. A limiting plate 9 is welded to the bottom of the bellows 503 and is installed inside the valve body 1. The valve stem body 504 passes through the inside of the limiting plate 9, and the diameter of the limiting plate 9 is larger than the diameter of the bellows 503. A flow hole 10 is provided below the limiting plate 9 and is opened inside the valve body 1. The size of the flow hole 10 is adapted to the size of the valve core 505.

[0031] The support assembly 3 includes a support plate 303 installed below the valve core 505, and a sealing ball 302 is fixedly provided at the bottom of the support plate 303. An adjusting screw 301 is welded to the bottom of the sealing ball 302. The sealing ball 302 is adapted to the size of the connection between the valve body 1 and the collecting pipe 403. The adjusting screw 301 is threadedly connected to the sealing cover 401. A support spring 304 is provided between the sealing ball 302 and the sealing cover 401. The two ends of the support spring 304 abut against the sealing ball 302 and the sealing cover 401 respectively, and the adjusting screw 301 passes through the interior of the support spring 304.

[0032] By adopting the above technical solution, the impurity collection component 4 is located below the flow hole 10. Impurities that do not pass through the flow hole 10 can accumulate inside the collection pipe 403. Rotating the adjusting screw 301 causes the sealing ball 302 to move up and down. When the sealing ball 302 moves to the connection between the collection pipe 403 and the valve body 1, it locks inside the connection, sealing the connection and preventing fluid from escaping from the connection. Pipe 403 is isolated from valve body 1. When valve core 505 is closed with flow hole 10 and valve body 1 is in the closed state, adjusting screw 301 can be rotated to move sealing ball 302 upward. Sealing ball 302 then drives support plate 303 upward. Support plate 303 supports valve core 505 and improves valve core 505 stability. When fluid is flowing normally, valve core 505 is away from flow hole 10. At the same time, sealing ball 302 is located above the connection between collection pipe 403 and valve body 1. Impurities can fall into the inside of collection pipe 403 when passing the position of sealing ball 302.

[0033] Working principle: Rotating the adjusting screw 301 causes the sealing ball 302 to move up and down. When the sealing ball 302 moves to the connection between the collecting pipe 403 and the valve body 1, it gets stuck inside the connection, sealing the connection and preventing fluid from leaking out. This isolates the collecting pipe 403 from the valve body 1. When the valve core 505 and the flow hole 10 are closed and the valve body 1 is in the closed state, rotating the adjusting screw 301 causes the sealing ball 302 to move upward, which in turn moves the support... The plate 303 moves upward, supporting the valve core 505 through the support plate 303, thereby improving the stability of the valve core 505. When the fluid is flowing normally, the valve core 505 is away from the flow hole 10. At the same time, the sealing ball 302 is located above the connection between the collection pipe 403 and the valve body 1. Impurities can fall into the inside of the collection pipe 403 when passing through the position of the sealing ball 302. By rotating the sealing screw 402, the sealing cover 401 can be separated from the collection pipe 403, thereby discharging the impurities in the collection pipe 403 to the outside, which facilitates the cleaning of the collection pipe 403 and prevents impurities from accumulating inside the valve body 1 and causing blockage of the valve body 1, thus affecting the normal flow of fluid.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high temperature bellows globe valve comprising a valve body (1) characterised in that: The inside of the valve body (1) is internally mounted with a detachable valve stem assembly (5), and the valve stem assembly (5) and the valve body (1) are mounted with a valve cover (7) connected by screws, the lower part of the valve body (1) is provided with an impurity collecting assembly (4) for collecting fluid impurities, the inside of the impurity collecting assembly (4) is internally mounted with a supporting assembly (3) for supporting the valve stem assembly (5), the left and right ends of the valve body (1) are respectively fixedly provided with a liquid inlet (11) for liquid inlet, and a liquid outlet (2) for liquid outlet; The impurity collecting assembly (4) comprises a collecting pipe (403) welded at the bottom of the valve body (1), and the bottom of the collecting pipe (403) is detachably connected with a sealing cover (401), the four corners of the sealing cover (401) are provided with sealing screws (402), and the sealing screws (402) are threadedly connected with the collecting pipe (403).

2. A high temperature bellows globe valve according to claim 1, wherein: The top of the valve stem assembly (5) is fixedly provided with a hand wheel (8), the valve stem assembly (5) comprises a threaded rod (501) penetrating in the inside of the valve body (1), and the outer part of the threaded rod (501) is threadedly connected with a bracket (6).

3. A high temperature bellows globe valve according to claim 2, wherein: The bottom of the threaded rod (501) is fixedly welded with a valve stem body (504), and the end of the valve stem body (504) is fixedly provided with a valve core (505), the outer part of the valve stem body (504) is sleeved with a bellows (503), and the top of the bellows (503) is provided with a fixed cover (502) sleeved on the outer part of the valve stem body (504).

4. A high temperature bellows globe valve according to claim 3, wherein: The bottom of the bellows (503) is provided with a limiting plate (9) welded in the inside of the valve body (1), the valve stem body (504) penetrates in the inside of the limiting plate (9), and the diameter of the limiting plate (9) is greater than the diameter of the bellows (503).

5. A high temperature bellows globe valve according to claim 4, wherein: The lower part of the limiting plate (9) is provided with a liquid flow hole (10) opened in the inside of the valve body (1), and the size of the liquid flow hole (10) is matched with the valve core (505).

6. A high temperature bellows globe valve according to claim 5, wherein: The supporting assembly (3) comprises a supporting plate (303) mounted below the valve core (505), and the bottom of the supporting plate (303) is fixedly provided with a sealing ball (302), the bottom of the sealing ball (302) is welded with an adjusting screw rod (301), the size of the sealing ball (302) is matched with the connecting part of the valve body (1) and the collecting pipe (403).

7. A high temperature bellows globe valve according to claim 6, wherein: The adjusting screw rod (301) is threadedly connected with the sealing cover (401), and a supporting spring (304) is arranged between the sealing ball (302) and the sealing cover (401), the two ends of the supporting spring (304) are respectively abutted with the sealing ball (302) and the sealing cover (401), and the adjusting screw rod (301) penetrates in the inside of the supporting spring (304).

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