Stop valve with valve element convenient to clean

Abstract

The utility model belongs to the technical field of stop valves, and particularly relates to a stop valve with a valve element convenient to clean. A valve cavity is formed in the valve body; a stop baffle is fixedly connected into the valve cavity. A through-flow opening is formed in the surface of the stop baffle; a valve element is clamped to the surface of the through-flow opening. The surface of the valve element is slidably connected with an adjusting lead screw. The bottom end of the adjusting lead screw is fixedly connected with a lower limiting nut. An upper adjusting nut is in threaded connection with the top of the valve element and located on the surface of the adjusting lead screw. By arranging the adjusting lead screw, the adjusting lead screw can be detached from the interior of the valve body along with the sealing clamping cover, the valve element is clamped on the adjusting lead screw through the upper adjusting nut and the lower limiting nut, when the adjusting lead screw is taken out of the valve body to be cleaned, and comprehensive cleaning needs to be conducted, the lower limiting nut can be screwed off, and therefore the valve element can be cleaned conveniently. And the valve element is detached from the adjusting lead screw, the valve element is independently cleaned, and the cleaning effect is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of stop valves, in particular to a stop valve which is convenient for cleaning a valve core. Background Art

[0002] The stop valve is a common industrial valve used to control the flow of fluid in a pipeline. When selecting a stop valve, factors such as the properties of the fluid, temperature, pressure, and size of the pipeline need to be considered to ensure that the selected valve meets the requirements of the specific application.

[0003] A Chinese patent with publication number CN213117531U discloses a self-cleaning stop valve, including a stop valve body, a support is installed on the outer side of the stop valve body near the edges on both sides, a reinforcing top block extends from the middle of the upper end surface of the support, the upper end surface of the reinforcing top block fits the middle of the lower end surface of the stop valve body, a sealing cover is fixedly installed on the upper end surface of the stop valve body, a frame extends from the upper end of the sealing cover, a threaded valve stem is penetrated and tightened through the middle of the upper end surface of the frame and the upper end surface of the sealing cover, a cleaning member is slidably installed through the inside of the threaded valve stem, a stop valve core is inlaid on the lower end of the threaded valve stem, and a stop ring is inlaid on the inner side of the stop valve body. The utility model can be easily cleaned and its service life can be extended.

[0004] As mentioned above, the patent provides a self-cleaning stop valve, which mainly utilizes a cleaning scraper to rotate to scrape and clean impurities adsorbed on the contact surface of the stop valve core and the stop ring. However, this can only handle some larger impurities, and cannot guarantee that all of them can be washed away with the fluid. They may adhere to the cleaning scraper, which causes the impurities to remain in the valve body and the cleaning effect is not high.

[0005] Therefore, in view of the above problems, a stop valve which is convenient for cleaning the valve core is proposed. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve the above problems, a stop valve which is easy to clean the valve core is proposed.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the stop valve which is easy to clean the valve core described in the utility model comprises a valve body; a valve cavity is opened inside the valve body; a stop baffle is fixedly connected to the inside of the valve cavity; a flow port is opened on the surface of the stop baffle; a valve core is clamped on the surface of the flow port; an adjusting screw is slidably connected to the surface of the valve core; a lower limiting nut is fixedly connected to the bottom end of the adjusting screw; an upper adjusting nut is threadedly connected to the top of the valve core and on the surface of the adjusting screw; a connecting sleeve is fixedly connected to the surface of the valve body; a sealing cover is threadedly connected to the inner wall of the connecting sleeve; one end of the adjusting screw passes through the sealing cover and extends to the top of the sealing cover.

[0008] Preferably, a pull block is fixedly connected to the top end of the adjusting screw rod; and the surface of the adjusting screw rod is slidably connected to the surface of the sealing card cover.

[0009] Preferably, an auxiliary pressure ring is sleeved on the bottom of the sealing cover and on the surface of the adjusting screw rod; the surface of the auxiliary pressure ring is slidingly connected to the surface of the adjusting screw rod; the surface of the auxiliary pressure ring and the bottom of the inner wall of the connecting sleeve are both clamped with sealing rings.

[0010] Preferably, a compression spring is sleeved on the surface of the adjusting screw rod; two ends of the compression spring are respectively fixedly connected to the bottom of the auxiliary pressure ring and the top of the upper adjusting nut.

[0011] Preferably, a limiting convex ring is fixedly connected to the surface of the adjusting screw rod; and a placement groove adapted to the limiting convex ring is provided on the surface of the sealing card cover.

[0012] Preferably, a rotating protective cylinder is clamped on the top of the sealing card cover; an L-shaped clamping block is fixedly connected to the bottom of the rotating protective cylinder; and a limiting sliding groove adapted to the L-shaped clamping block is provided on the top of the sealing card cover.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides a stop valve which is easy to clean the valve core. An adjusting screw rod is arranged, and the adjusting screw rod can be disassembled from the inside of the valve body along with a sealing card cover, and the valve core is clamped on the adjusting screw rod by an upper adjusting nut and a lower limiting nut. When the adjusting screw rod is taken out of the valve body for cleaning, and when comprehensive cleaning is required, the lower limiting nut can also be screwed off, the valve core can be disassembled from the adjusting screw rod, and the valve core can be cleaned separately, thereby ensuring the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a second stereogram of the utility model;

[0018] Figure 3 It is a three-dimensional diagram of the valve body in the utility model;

[0019] Figure 4 It is the first stereogram of a part of the structure of the utility model;

[0020] Figure 5 It is a second stereogram of a part of the structure of the utility model;

[0021] Legend:

[0022] 1. Valve body; 2. Valve chamber; 3. Shut-off baffle; 4. Flow port; 5. Valve core; 6. Adjusting screw; 7. Lower limit nut; 8. Upper adjusting nut; 9. Connecting sleeve; 10. Sealing card cover; 11. Pull block; 12. Auxiliary pressure ring; 13. Sealing ring; 14. Compression spring; 15. Limiting convex ring; 16. Placement slot; 17. Rotating protective cylinder; 18. L-shaped block; 19. Limiting slide slot. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Specific examples are given below.

[0025] See also Figure 1 - Figure 5When the valve body 1 is in operation, the stop valve 2 is provided with a valve cavity 2; a stop baffle 3 is fixedly connected to the interior of the valve cavity 2; a flow port 4 is provided on the surface of the stop baffle 3; a valve core 5 is clamped on the surface of the flow port 4; an adjusting screw rod 6 is slidably connected to the surface of the valve core 5; a lower limit nut 7 is fixedly connected to the bottom of the adjusting screw rod 6; an upper adjusting nut 8 is threadedly connected to the top of the valve core 5 and located on the surface of the adjusting screw rod 6; a connecting sleeve 9 is fixedly connected to the surface of the valve body 1; a sealing card cover 10 is threadedly connected to the inner wall of the connecting sleeve 9; one end of the adjusting screw rod 6 passes through the sealing card cover 10 and extends to the top of the sealing card cover 10; when working, the valve cavity 2 is provided in the valve body 1, the stop baffle 3 guides the internal fluid, the flow port 4 is used for the circulation of the fluid, and the valve core 5 is clamped in the flow port 4 to cut off the flow The valve core 5 is sleeved on the surface of the adjusting screw rod 6, and the valve core 5 can slide on the surface of the adjusting screw rod 6, the lower limiting nut 7 is threadedly rotated on the bottom of the valve core 5 to limit the bottom of the valve core 5, and the upper adjusting nut 8 is stuck on the top of the valve core 5, and the upper adjusting nut 8 and the lower limiting nut 7 are stuck on the adjusting screw rod 6, the connecting sleeve 9 is fixed on the valve body 1, and the sealing card cover 10 is threadedly connected with the connecting sleeve 9, so that the sealing card cover 10 can be disassembled and quickly installed from the surface of the connecting sleeve 9, and the adjusting screw rod 6 is stuck on the sealing card cover 10. When the valve core 5 needs to be cleaned, the sealing card cover 10 can be removed from the valve body 1, and the adjusting screw rod 6 can be taken out at the same time, and then the valve core 5 can be taken out for cleaning. In addition, when the valve core 5 needs to be fully cleaned, the lower limiting nut 7 can be rotated to take the valve core 5 out of the adjusting screw rod 6, and the valve core 5 can be fully cleaned separately to ensure the cleaning effect.

[0026] Further, such as Figure 3 and Figure 4As shown, the top of the adjusting screw 6 is fixedly connected with a pull block 11; the surface of the adjusting screw 6 is slidably connected with the surface of the sealing card cover 10; the bottom of the sealing card cover 10 and the surface of the adjusting screw 6 are sleeved with an auxiliary pressure ring 12; the surface of the auxiliary pressure ring 12 is slidably connected with the surface of the adjusting screw 6; the surface of the auxiliary pressure ring 12 and the bottom of the inner wall of the connecting sleeve 9 are both clamped with a sealing ring 13; the surface of the adjusting screw 6 is sleeved with a compression spring 14; the two ends of the compression spring 14 are respectively fixedly connected with the bottom of the auxiliary pressure ring 12 and the top of the upper adjusting nut 8. During operation, the pull block 11 facilitates the lifting of the adjusting screw rod 6, and the adjusting screw rod 6 is slidably connected with the surface of the sealing card cover 10. An auxiliary pressure ring 12 is sleeved on the surface of the adjusting screw rod 6, and the auxiliary pressure ring 12 slides on the surface of the adjusting screw rod 6. The auxiliary pressure ring 12 and the bottom of the inner wall of the connecting sleeve 9 clamp the sealing ring 13, and the internal fluid is sealed by the sealing ring 13. At the same time, a compression spring 14 is sleeved on the surface of the adjusting screw rod 6, and the two ends of the compression spring 14 are respectively fixed to the auxiliary pressure ring 12 and the upper adjusting nut 8, and the compression spring 14 is in a compressed state, and at the same time the compression spring 14 has a strong elastic force, thereby preventing the pressure of the water flow from flushing up the valve core 5 during blocking, thereby ensuring the stability after blocking.

[0027] Further, such as Figure 1 , Figure 4 and Figure 5 As shown, the surface of the adjusting screw 6 is fixedly connected with a limiting convex ring 15; the surface of the sealing cover 10 is provided with a placement slot 16 adapted to the limiting convex ring 15; the top of the sealing cover 10 is clamped with a rotating protective cylinder 17; the bottom of the rotating protective cylinder 17 is fixedly connected with an L-shaped clamping block 18; the top of the sealing cover 10 is provided with a limiting sliding groove 19 adapted to the L-shaped clamping block 18. During operation, the limiting convex ring 15 is fixed on the surface of the adjusting screw 6 and can be placed in the placement slot 16. When blocking is not required, the adjusting screw 6 is pulled up and then rotated, and the limiting convex ring 15 is clamped at the position of the top of the placement slot 16, thereby fixing the adjusting screw 6 at a certain height, so that the fluid can flow normally from the valve cavity 2. In addition, the rotating protective cylinder 17 protects the interior, and the L-shaped clamping block 18 cooperates with the limiting sliding groove 19 to clamp the rotating protective cylinder 17 at the top of the sealing cover 10, thereby improving the adaptability of use.

[0028] Working principle: Since the above patent provides a self-cleaning stop valve, it mainly uses a cleaning scraper to rotate to scrape and clean impurities adsorbed on the contact surface of the stop valve core 5 and the stop ring. However, this can only handle some larger impurities, and it cannot be guaranteed that all of them can be washed away with the fluid. They may adhere to the cleaning scraper, which leads to the problem that impurities are still in the valve body 1 and the cleaning effect is not high. When working, the valve cavity 2 is opened inside the valve body 1, the stop baffle 3 guides the internal fluid, the flow port 4 is used for the circulation of the fluid, the valve core 5 is stuck in the flow port 4 to intercept the flow, and the valve core 5 is sleeved on the surface of the adjusting screw 6, and the valve core 5 can slide on the surface of the adjusting screw 6, and the lower limit nut 7 is threadedly rotated at the bottom of the valve core 5 to adjust the valve core 5. The bottom of the valve core 5 is limited, and the upper adjusting nut 8 is stuck on the top of the valve core 5, and the upper adjusting nut 8 and the lower limiting nut 7 are stuck on the adjusting screw rod 6, and the connecting sleeve 9 is fixed on the valve body 1. The sealing card cover 10 is threadedly connected with the connecting sleeve 9, so that the sealing card cover 10 can be disassembled and quickly installed from the surface of the connecting sleeve 9, and the adjusting screw rod 6 is stuck on the sealing card cover 10. When the valve core 5 needs to be cleaned, the sealing card cover 10 can be removed from the valve body 1, and the adjusting screw rod 6 can be taken out at the same time, and then the valve core 5 can be taken out for cleaning. In addition, when the valve core 5 needs to be fully cleaned, the lower limiting nut 7 can be rotated to take the valve core 5 out of the adjusting screw rod 6, and the valve core 5 can be fully cleaned separately to ensure the cleaning effect. The pull block 11 is convenient for the adjusting The screw rod 6 is lifted upward, and the adjusting screw rod 6 is slidably connected with the surface of the sealing card cover 10. An auxiliary pressure ring 12 is sleeved on the surface of the adjusting screw rod 6, and the auxiliary pressure ring 12 slides on the surface of the adjusting screw rod 6. The auxiliary pressure ring 12 and the bottom of the inner wall of the connecting sleeve 9 clamp the sealing ring 13, and the internal fluid is sealed by the sealing ring 13. At the same time, a compression spring 14 is sleeved on the surface of the adjusting screw rod 6, and the two ends of the compression spring 14 are respectively fixed to the auxiliary pressure ring 12 and the upper adjusting nut 8, and the compression spring 14 is in a compressed state, and at the same time, the compression spring 14 has a strong elastic force, thereby preventing the pressure of the water flow from flushing up the valve core 5 during blocking, thereby ensuring the stability after blocking. The limiting convex ring 15 is fixed on the surface of the adjusting screw rod 6 and can be placed in the placement slot 16. When it is not necessary to When sealing, the adjusting screw rod 6 is pulled up and then rotated, and the limiting convex ring 15 is stuck in the position of the top of the card slot 16, so that the adjusting screw rod 6 is fixed at a certain height, so that the fluid can flow normally from the valve chamber 2. In addition, the rotating protective cylinder 17 protects the interior, and the L-shaped block 18 cooperates with the limiting slide groove 19 to clamp the rotating protective cylinder 17 on the top of the sealing card cover 10, which improves the adaptability of use. By setting the adjusting screw rod 6, the adjusting screw rod 6 can be disassembled from the inside of the valve body 1 along with the sealing card cover 10, and the valve core 5 is clamped on the adjusting screw rod 6 by the upper adjusting nut 8 and the lower limiting nut 7. When the adjusting screw rod 6 is taken out from the valve body 1 for cleaning, and when comprehensive cleaning is required, the lower limiting nut 7 can also be unscrewed.Remove the valve core 5 from the adjusting screw rod 6 and clean the valve core 5 separately to ensure the cleaning effect.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A stop valve that is easy to clean the valve core, characterized in that: The valve body (1) comprises a valve chamber (2) formed inside the valve body (1); a stop baffle (3) is fixedly connected inside the valve chamber (2); a flow opening (4) is formed on the surface of the stop baffle (3); a valve core (5) is clamped on the surface of the flow opening (4); an adjusting screw rod (6) is slidably connected to the surface of the valve core (5); a lower limit nut (7) is fixedly connected to the bottom end of the adjusting screw rod (6); an upper adjusting nut (8) is threadedly connected to the top of the valve core (5) and located on the surface of the adjusting screw rod (6); a connecting sleeve (9) is fixedly connected to the surface of the valve body (1); a sealing card cover (10) is threadedly connected to the inner wall of the connecting sleeve (9); one end of the adjusting screw rod (6) passes through the sealing card cover (10) and extends to the top of the sealing card cover (10).

2. A stop valve for easy cleaning of the valve core according to claim 1, characterized in that: A pull block (11) is fixedly connected to the top end of the adjusting screw rod (6); and the surface of the adjusting screw rod (6) is slidably connected to the surface of the sealing card cover (10).

3. A stop valve for easy cleaning of the valve core according to claim 1, characterized in that: An auxiliary pressure ring (12) is sleeved on the bottom of the sealing cover (10) and located on the surface of the adjusting screw rod (6); the surface of the auxiliary pressure ring (12) is slidably connected to the surface of the adjusting screw rod (6); and a sealing ring (13) is clamped on the surface of the auxiliary pressure ring (12) and the bottom of the inner wall of the connecting sleeve (9).

4. A stop valve for easy cleaning of the valve core according to claim 3, characterized in that: A compression spring (14) is sleeved on the surface of the adjusting screw rod (6); two ends of the compression spring (14) are respectively fixedly connected to the bottom of the auxiliary pressure ring (12) and the top of the upper adjusting nut (8).

5. The stop valve with easy-to-clean valve core according to claim 1, characterized in that: A limiting convex ring (15) is fixedly connected to the surface of the adjusting screw rod (6); and a placement slot (16) adapted to the limiting convex ring (15) is provided on the surface of the sealing card cover (10).

6. A stop valve for easy cleaning of the valve core according to claim 1, characterized in that: The top of the sealing card cover (10) is clamped with a rotating protective cylinder (17); the bottom of the rotating protective cylinder (17) is fixedly connected with an L-shaped clamping block (18); and the top of the sealing card cover (10) is provided with a limiting sliding groove (19) adapted to the L-shaped clamping block (18).

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