A regulating valve with a leak-proof mechanism

Abstract

This invention relates to the field of control valve technology, and specifically discloses a control valve with an anti-leakage mechanism. A control component is rotatably connected to the top of the valve body, a buffer component is fixedly connected to the inner side of the valve body, and the side of a contact component is fixedly connected to the inner side of the valve body. The inner side of the contact component is threadedly connected to the side of the control component. The control component includes a valve stem, a rotating rod is fixedly connected to the top of the valve stem, and a valve core is fixedly connected to the bottom of the valve stem. This control valve with an anti-leakage mechanism, by providing a contact component, allows lubrication to reduce friction between the valve stem and the stuffing box, reducing wear caused by friction. When the wear on the valve stem surface is small, it can better fit with the packing, allowing the packing to more tightly fill the gap between the valve stem and the stuffing box, thereby reducing the possibility of media leakage and improving the valve's sealing performance.

Description

Technical Field

[0001] This invention relates to the field of control valve technology, specifically to a control valve with a leak-proof mechanism. Background Technology

[0002] A control valve is an automated control valve used to regulate the flow rate, pressure, temperature, and other parameters of fluids (such as gases and liquids). It has wide applications in numerous fields such as industrial production, construction, and energy. With the continuous development of industrial production, the performance requirements for control valves are becoming increasingly stringent, with leak-proof performance being a crucial indicator. In industries such as chemical, petroleum, natural gas, and pharmaceuticals, the media being transported often possess characteristics such as corrosiveness, toxicity, flammability, and explosiveness. If a control valve leaks, it not only wastes the media and causes economic losses but may also lead to safety accidents, posing a serious threat to personnel and the environment.

[0003] When a control valve operates for an extended period without lubrication protection, scratches and wear can easily appear on the valve stem surface. These surface defects can damage the smoothness and straightness of the valve stem, preventing it from fitting properly with the packing. Even if the packing itself is not severely worn, gaps can still appear due to the unevenness of the valve stem surface, leading to media leakage. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a regulating valve with a leak-proof mechanism, comprising:

[0005] A valve body, the top of which is rotatably connected to a control component, and the inner side of which is fixedly connected to a buffer component;

[0006] A contact component, wherein the side of the contact component is fixedly connected to the inside of the valve body, and the inside of the contact component is threadedly connected to the side of the control component;

[0007] The control component includes a valve stem, a rotating rod fixedly connected to the top of the valve stem, and a valve core fixedly connected to the bottom of the valve stem;

[0008] When the valve body is closed, the rotating rod is rotated, which drives the valve stem to rotate threadedly within the valve body. This causes the valve stem to move the valve core downwards. Simultaneously, the valve stem moves threadedly downwards within the inner side of the outlet casing, while lubricating the side of the valve stem to prevent rust. The valve stem continues to move the valve core downwards until the valve core abuts against the sealing groove, thus closing the valve body.

[0009] Preferably, the contact component includes a contact housing and a connecting block. The side of the contact housing is fixedly connected to the inner side of the valve body, and the side of the connecting block is slidably connected to the inner side of the valve body. The connecting block is disposed above the contact housing, and the inner side of the connecting block is threadedly connected to the side of the valve stem. A storage mechanism is fixedly connected to the inner side of the contact housing, and an outflow mechanism is fixedly connected to the middle of the inner side of the contact housing.

[0010] When the valve stem moves downward in a threaded motion, it drives the connecting block to move downward inside the valve body, thereby causing the connecting block to drive the connecting shaft to move downward inside the storage shell. At the same time, the connecting shaft drives the extrusion plate to move downward and extrude, causing the extrusion plate to extrude the sponge block in the storage shell.

[0011] The downward threaded movement of the valve stem automatically triggers the extrusion and lubrication process of the lubricating oil. When the valve stem needs lubrication, the lubrication system will work synchronously to achieve lubrication on demand, avoiding the tediousness of manually adding lubricating oil periodically and reducing the problem of untimely lubrication due to human negligence.

[0012] Preferably, the outflow mechanism includes an outflow housing, the inner side of which is threadedly connected to the side of the valve stem, and the side of the outflow housing is uniformly provided with through holes, and the side of the outflow housing is fixedly connected to the inner side of the contact housing.

[0013] Preferably, the storage mechanism includes a storage shell, a connecting plate, and a sponge block. The side of the storage shell is fixedly connected to the inner side of the contact shell, the side of the connecting plate is fixedly connected to the top of the inner cavity of the contact shell, a connecting shaft is slidably connected to the inner side of the storage shell, the top of the connecting shaft is fixedly connected to the bottom of the connecting block, a squeezing plate is fixedly connected to the bottom of the connecting shaft, the inner side of the squeezing plate is slidably connected to the side of the outflow shell, the sponge block is disposed at the bottom of the inner cavity of the storage shell, an outflow pipe is fixedly connected to the bottom of the inner cavity of the storage shell, and the bottom of the outflow pipe is fixedly connected to the inner side of the sponge block.

[0014] By adding an appropriate amount of lubricating oil into the inner cavity of the storage shell, and by setting an outflow pipe at the bottom of the storage shell, the lubricating oil in the storage shell can enter the sponge block through the outflow pipe. The sponge block is squeezed by the extrusion plate, thereby squeezing out the lubricating oil absorbed by the sponge block. The lubricating oil squeezed out of the sponge block flows out through the evenly opened through holes on the outflow shell, thereby enabling the side of the valve stem to be lubricated when the valve body moves downward.

[0015] Good lubrication can reduce wear between the valve stem and the packing, allowing the packing to better fit the valve stem, which helps maintain the valve's sealing performance, reduces the risk of media leakage, and improves the valve's working efficiency and safety.

[0016] Preferably, the buffer component includes a valve seat, the side of which is fixedly connected to the inner side of the valve body, a sealing groove is provided in the middle of the top of the valve seat, and buffer mechanisms are fixedly connected to both the upper and lower sides of the valve seat.

[0017] When the valve body is opened, a large flow of medium passes through the valve seat, and the medium impacts the buffer mechanism, thus buffering the rapidly passing medium. This prevents the medium from impacting the valve core too quickly when the valve body is opened, which would otherwise cause excessive impact on the valve core.

[0018] Preferably, the buffer mechanism includes a buffer housing, the side of which is fixedly connected to the inner side of the valve seat, a buffer rod slidably connected to the inner side of the buffer housing, a ring fixedly connected to the side of the buffer rod, a connecting spring sleeved on the buffer rod, one end of the connecting spring fixedly connected to the ring, the other end of the connecting spring fixedly connected to the inner wall of the buffer housing, a buffer groove is formed on the side of the buffer rod away from the valve seat, and a scraper assembly is fixedly connected to the inner side of the buffer rod away from the ring.

[0019] By creating a buffer groove on the buffer rod and setting the side of the buffer rod closest to the buffer groove to be inclined;

[0020] Preferably, the scraper assembly includes a connecting sleeve, the side of the connecting sleeve is fixedly connected to the inner side of the buffer housing, and scrapers are fixedly connected to both the upper and lower sides of the connecting sleeve. The side of the scraper away from the buffer housing is in contact with the side of the buffer rod, and clearance grooves are evenly provided on the sides of the connecting sleeve and the scraper.

[0021] This invention provides a regulating valve with a leak-proof mechanism. It offers the following advantages:

[0022] 1. This regulating valve with an anti-leakage mechanism is equipped with contact parts. Lubrication can reduce friction between the valve stem and the stuffing box, reducing wear caused by friction. When the wear on the valve stem surface is small, it can fit better with the packing. The packing can fill the gap between the valve stem and the stuffing box more tightly, thereby reducing the possibility of medium leakage and improving the valve's sealing performance.

[0023] 2. This regulating valve with an anti-leakage mechanism is equipped with an outflow mechanism. Good lubrication allows the valve stem to move more smoothly in the stuffing box. When the valve is closed, the valve stem can reach the sealing position more accurately. Furthermore, the packing can deform more evenly under the pressure of the valve stem to achieve a good seal. At the same time, lubrication can also prevent the packing from drying out, hardening, or being damaged due to excessive friction, thus maintaining the elasticity and sealing performance of the packing.

[0024] 3. This regulating valve with an anti-leakage mechanism is equipped with a buffer mechanism. When the buffer rod moves within the buffer housing, if a large amount of flow medium adheres to it, the friction between the buffer rod and the buffer housing may increase, causing jamming. Cleaning the side of the buffer rod with a scraper to remove the adhered flow medium effectively avoids this situation, ensuring the buffer rod can move smoothly within the buffer housing. This allows the buffer mechanism to function properly, guaranteeing the stability and reliability of the regulating valve when subjected to the impact of the flow medium.

[0025] 4. The regulating valve with an anti-leakage mechanism is equipped with a scraper assembly. The design of the clearance groove avoids excessive contact force between the scraper and the buffer rod. If the contact force is too large, the scraper will cause excessive scraping on the surface of the buffer rod, damaging the surface smoothness of the buffer rod and even destroying its structural integrity. Reasonable contact force can ensure the cleaning effect of the scraper on the medium, while protecting the buffer rod from excessive wear and maintaining the stable performance of the buffer rod. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the regulating valve with a leak-proof mechanism according to the present invention;

[0027] Figure 2 This is a cross-sectional view of the present invention;

[0028] Figure 3 This is a schematic diagram of the contact component of the present invention;

[0029] Figure 4 This is a schematic diagram of the outflow mechanism of the present invention;

[0030] Figure 5 This is a schematic diagram of the storage mechanism of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the storage casing of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the buffer component of the present invention;

[0033] Figure 8 This is a schematic diagram of the valve seat structure of the present invention;

[0034] Figure 9 This is a schematic diagram of the buffer mechanism of the present invention;

[0035] Figure 10 This is a schematic diagram of the scraper assembly of the present invention.

[0036] In the diagram: 1. Valve body; 2. Control component; 21. Rotating rod; 22. Valve stem; 23. Valve core; 3. Contact component; 31. Contact housing; 32. Connecting block; 33. Storage mechanism; 331. Storage housing; 332. Connecting plate; 333. Connecting shaft; 334. Sponge block; 335. Squeezing plate; 336. Outflow pipe; 34. Outflow mechanism; 341. Outflow housing; 342. Through hole; 4. Buffer component; 41. Valve seat; 42. Sealing groove; 43. Buffer mechanism; 431. Buffer housing; 432. Buffer rod; 433. Buffer groove; 434. Connecting spring; 435. Scraper assembly; 4351. Connecting sleeve; 4352. Relief groove; 4353. Scraper; 436. Ring. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-2 The present invention provides a technical solution: a regulating valve with a leak-proof mechanism, comprising:

[0039] Valve body 1, with a control component 2 rotatably connected to the top of valve body 1, and a buffer component 4 fixedly connected to the inner side of valve body 1;

[0040] Contact component 3, the side of contact component 3 is fixedly connected to the inside of valve body 1, and the inside of contact component 3 is threadedly connected to the side of control component 2.

[0041] The control component 2 includes a valve stem 22, with a rotating rod 21 fixedly connected to the top of the valve stem 22 and a valve core 23 fixedly connected to the bottom of the valve stem 22;

[0042] When the valve body 1 is closed, the rotating rod 21 is rotated, which drives the valve stem 22 to rotate threadedly in the valve body 1. This causes the valve stem 22 to move the valve core 23 downward. At the same time, the valve stem 22 moves downward threadedly in the inner side of the outlet housing 341, and the side of the valve stem 22 is lubricated to prevent rust from forming on the side of the valve stem 22. The valve stem 22 drives the valve core 23 to continue moving downward until the valve core 23 abuts against the sealing groove 42, thereby closing the valve body 1.

[0043] Please see Figures 1-3The contact component 3 includes a contact housing 31 and a connecting block 32. The side of the contact housing 31 is fixedly connected to the inside of the valve body 1, and the side of the connecting block 32 is slidably connected to the inside of the valve body 1. The connecting block 32 is disposed above the contact housing 31, and the inside of the connecting block 32 is threadedly connected to the side of the valve stem 22. A storage mechanism 33 is fixedly connected to the inside of the contact housing 31, and an outflow mechanism 34 is fixedly connected to the middle of the inside of the contact housing 31.

[0044] When the valve stem 22 moves downward in a threaded motion, it drives the connecting block 32 to move downward inside the valve body 1, thereby causing the connecting block 32 to drive the connecting shaft 333 to move downward in the inner cavity of the storage shell 331. At the same time, the connecting shaft 333 drives the extrusion plate 335 to move downward and extrude, so that the extrusion plate 335 extrudes the sponge block 334 in the storage shell 331.

[0045] The downward threaded movement of the valve stem 22 automatically triggers the extrusion and lubrication process of the lubricating oil. When the valve stem 22 needs lubrication, the lubrication system will work synchronously to achieve lubrication on demand, avoiding the tediousness of manually adding lubricating oil periodically and reducing the problem of untimely lubrication due to human negligence.

[0046] Please see Figures 1-4 The outflow mechanism 34 includes an outflow housing 341. The inner side of the outflow housing 341 is threadedly connected to the side of the valve stem 22. Through holes 342 are evenly provided on the side of the outflow housing 341. The side of the outflow housing 341 is fixedly connected to the inner side of the contact housing 31.

[0047] Please see Figures 1-6 The storage mechanism 33 includes a storage shell 331, a connecting plate 332, and a sponge block 334. The side of the storage shell 331 is fixedly connected to the inside of the contact shell 31. The side of the connecting plate 332 is fixedly connected to the top of the inner cavity of the contact shell 31. A connecting shaft 333 is slidably connected to the inside of the storage shell 331. The top of the connecting shaft 333 is fixedly connected to the bottom of the connecting block 32. A squeezing plate 335 is fixedly connected to the bottom of the connecting shaft 333. The inside of the squeezing plate 335 is slidably connected to the side of the outflow shell 341. The sponge block 334 is disposed at the bottom of the inner cavity of the storage shell 331. An outflow pipe 336 is fixedly connected to the bottom of the inner cavity of the storage shell 331. The bottom of the outflow pipe 336 is fixedly connected to the inside of the sponge block 334.

[0048] By adding an appropriate amount of lubricating oil into the inner cavity of the storage housing 331, and by providing an outlet pipe 336 at the bottom of the storage housing 331, the lubricating oil in the storage housing 331 can enter the sponge block 334 through the outlet pipe 336. The sponge block 334 is squeezed by the extrusion plate 335, thereby squeezing out the lubricating oil absorbed in the sponge block 334. The lubricating oil squeezed out of the sponge block 334 flows out through the uniformly opened through holes 342 on the outlet housing 341, thereby enabling the side of the valve stem 22 to be lubricated when the valve body 1 moves downward.

[0049] Good lubrication can reduce wear between the valve stem 22 and the packing, allowing the packing to better fit the valve stem 22, which helps maintain the valve's sealing performance, reduces the risk of media leakage, and improves the valve's working efficiency and safety.

[0050] Please see Figures 1-8 The present invention provides a technical solution: the buffer component 4 includes a valve seat 41, the side of the valve seat 41 is fixedly connected to the inner side of the valve body 1, a sealing groove 42 is provided in the middle of the top of the valve seat 41, and a buffer mechanism 43 is fixedly connected to both the upper and lower sides of the valve seat 41.

[0051] When the valve body 1 is opened, a large amount of flow medium passes through the valve seat 41 and impacts the flow medium with the buffer mechanism 43, thereby buffering the rapidly passing flow medium and preventing the flow medium from impacting the valve core 23 too fast when the valve body 1 is opened, which would cause excessive impact on the valve core 23.

[0052] Please see Figures 1-9 The buffer mechanism 43 includes a buffer housing 431. The side of the buffer housing 431 is fixedly connected to the inner side of the valve seat 41. A buffer rod 432 is slidably connected to the inner side of the buffer housing 431. A ring 436 is fixedly connected to the side of the buffer rod 432. A connecting spring 434 is sleeved on the buffer rod 432. One end of the connecting spring 434 is fixedly connected to the ring 436. The other end of the connecting spring 434 is fixedly connected to the inner wall of the buffer housing 431. A buffer groove 433 is opened on the side of the buffer rod 432 away from the valve seat 41. A scraper assembly 435 is fixedly connected to the inner side of the buffer rod 432 away from the ring 436.

[0053] By providing a buffer groove 433 on the buffer rod 432 and setting the side of the buffer rod 432 near the buffer groove 433 to be inclined;

[0054] The presence of the buffer groove 433 increases the structural flexibility of the buffer rod 432. When the flow medium impacts the buffer rod 432, the buffer groove 433 can deform to a certain extent and absorb some of the impact energy. At the same time, setting the side of the buffer rod 432 close to the buffer groove 433 to be inclined can guide the flow medium to flow along the inclined surface, disperse the impact force, and avoid concentrating the force on the valve seat 41. This more effectively buffers the impact force of the flow medium on the valve seat 41 and protects the valve seat 41 from damage due to excessive impact.

[0055] Please see Figures 1-10 The scraper assembly 435 includes a connecting sleeve 4351. The side of the connecting sleeve 4351 is fixedly connected to the inner side of the buffer housing 431. Scrapers 4353 are fixedly connected to both the upper and lower sides of the connecting sleeve 4351. The side of the scraper 4353 away from the buffer housing 431 contacts the side of the buffer rod 432. The sides of the connecting sleeve 4351 and the scraper 4353 are evenly provided with clearance grooves 4352.

[0056] When the buffer rod 432 is impacted by the flow medium, it moves towards the buffer housing 431. Simultaneously, the connecting spring 434 is compressed. A scraper 4353 is provided inside the buffer housing 431. As the buffer rod 432 moves within the buffer housing 431 under the impact of the flow medium, the scraper 4353 cleans and scrapes the side of the buffer rod 432, removing the flow medium adhering to it. This prevents a large amount of flow medium from adhering to the buffer rod 432 during prolonged contact with the flow medium. Furthermore, the evenly distributed clearance grooves 4352 on the scraper 4353 and the connecting sleeve 4351 prevent excessive contact force between the scraper 4353 and the buffer rod 432.

[0057] The flow medium may contain impurities or corrosive components. If these components adhere to the buffer rod 432 for a long time, it will accelerate the wear and corrosion of the buffer rod 432 and shorten its service life. Timely scraping off the adhered medium can reduce the contact time between the buffer rod 432 and these harmful components, reduce the degree of wear and corrosion, thereby extending the overall service life of the buffer mechanism 43 and reducing the maintenance cost and replacement frequency of the equipment.

[0058] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A control valve having a leakage prevention mechanism, characterized by comprising: Include: The valve body (1), the top of the valve body (1) is rotatably connected with the control component (2), and the inner side of the valve body (1) is fixedly connected with the buffer component (4); The contact component (3), the side of the contact component (3) is fixedly connected with the inner side of the valve body (1), and the inner side of the contact component (3) is threadedly connected with the side of the control component (2); The control component (2) includes a valve stem (22), the top of the valve stem (22) is fixedly connected with a rotating rod (21), and the bottom of the valve stem (22) is fixedly connected with a valve core (23); The contact component (3) includes a contact shell (31) and a connecting block (32), the side of the contact shell (31) is fixedly connected with the inner side of the valve body (1), the side of the connecting block (32) is slidingly connected with the inner side of the valve body (1), when the valve stem (22) is threadedly moved downward, the connecting block (32) is driven to move downward in the inner part of the valve body (1), the connecting block (32) is arranged above the contact shell (31), the inner side of the connecting block (32) is threadedly connected with the side of the valve stem (22), the inner side of the contact shell (31) is fixedly connected with a storage mechanism (33), and the middle part of the inner side of the contact shell (31) is fixedly connected with an outflow mechanism (34); The outflow mechanism (34) includes an outflow shell (341), the inner side of the outflow shell (341) is threadedly connected with the side of the valve stem (22), the side of the outflow shell (341) is uniformly provided with a through hole (342), and the side of the outflow shell (341) is fixedly connected with the inner side of the contact shell (31); The storage mechanism (33) includes a storage shell (331), a connecting plate (332) and a sponge block (334), the side of the storage shell (331) is fixedly connected with the inner side of the contact shell (31), the side of the connecting plate (332) is fixedly connected with the top of the inner cavity of the contact shell (31), the inner side of the storage shell (331) is slidingly connected with a connecting shaft (333), the bottom of the connecting shaft (333) is fixedly connected with a pressing plate (335), the sponge block (334) is arranged at the bottom of the inner cavity of the storage shell (331), and the bottom of the inner cavity of the storage shell (331) is fixedly connected with an outflow pipe (336); The bottom of the outflow pipe (336) is fixedly connected with the inner side of the sponge block (334), the top of the connecting shaft (333) is fixedly connected with the bottom of the connecting block (32), and the inner side of the pressing plate (335) is slidingly connected with the side of the outflow shell (341).

2. The control valve having a leakage prevention mechanism according to claim 1, characterized by: The buffer component (4) includes a valve seat (41), the side of the valve seat (41) is fixedly connected with the inner side of the valve body (1), the middle part of the top of the valve seat (41) is provided with a sealing groove (42), and the upper and lower sides of the valve seat (41) are fixedly connected with a buffer mechanism (43).

3. The control valve having a leakage prevention mechanism according to claim 2, characterized by: The buffer mechanism (43) comprises a buffer shell (431), the inner side of the buffer shell (431) is slidably connected with a buffer rod (432), the side of the buffer rod (432) is fixedly connected with a circular ring (436), the buffer rod (432) is sleeved with a connecting spring (434), the side, away from the valve seat (41), of the buffer rod (432) is provided with a buffer groove (433), and the inner side of the buffer rod (432), away from the circular ring (436), is fixedly connected with a scraper assembly (435).

4. The control valve having a leakage prevention mechanism according to claim 3, characterized by: The side of the buffer shell (431) is fixedly connected with the inner side of the valve seat (41), one end of the connecting spring (434) is fixedly connected with the circular ring (436), and the other end of the connecting spring (434) is fixedly connected with the inner wall of the buffer shell (431).

5. The control valve having a leakage prevention mechanism according to claim 4, characterized in that: The scraper assembly (435) comprises a connecting sleeve (4351), the upper and lower sides of the connecting sleeve (4351) are fixedly connected with scrapers (4353), and the sides of the connecting sleeve (4351) and the scrapers (4353) are uniformly provided with accommodating grooves (4352).

6. The control valve having a leakage prevention mechanism according to claim 5, characterized in that: The side of the connecting sleeve (4351) is fixedly connected with the inner side of the buffer shell (431), and the side, away from the buffer shell (431), of the scraper (4353) is in contact with the side of the buffer rod (432).

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