Regulating valve with anti-leakage mechanism

Abstract

The invention relates to the technical field of regulating valves, and particularly discloses a regulating valve with a leak-proof mechanism, the top of a valve body is rotatably connected with a control part, the inner side of the valve body is fixedly connected with a buffer part, and the side surface of a contact part is fixedly connected with the inner side of the valve body; the inner side of the contact part is in threaded connection with the side face of a control part, the control part comprises a valve rod, the top of the valve rod is fixedly connected with a rotating rod, and the bottom of the valve rod is fixedly connected with a valve element. According to the regulating valve with the anti-leakage mechanism, the contact component is arranged, the friction between the valve rod and the stuffing box can be reduced through lubrication, abrasion caused by friction is reduced, when the surface of the valve rod is abraded slightly, the valve rod can be better attached to the stuffing, the gap between the valve rod and the stuffing box can be more tightly filled with the stuffing, and the service life of the valve rod is prolonged. Therefore, the possibility of medium leakage is reduced, and the sealing performance of the valve is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of regulating valves, and particularly to a regulating valve with a leakage prevention mechanism. Background Art

[0002] A regulating valve is an automatic control valve used to regulate parameters such as the flow rate, pressure, and temperature of fluids (such as gases and liquids). It has a wide range of applications in many fields such as industrial production, construction, and energy. With the continuous development of industrial production, the performance requirements for regulating valves are getting higher and higher, and the leakage prevention performance is an important indicator. In industries such as chemical engineering, petroleum, natural gas, and pharmaceuticals, the transported media often have characteristics such as corrosiveness, toxicity, flammability, and explosiveness. If a regulating valve leaks, it will not only cause waste of the medium and economic losses, but also may trigger safety accidents, posing a serious threat to personnel and the environment.

[0003] When the regulating valve works for a long time without lubrication protection, scratches, wear and other damages are likely to appear on the surface of the valve stem. These surface defects will damage the smoothness and straightness of the valve stem, making it impossible for the valve stem and the packing to fit well. Even if the packing itself is not severely worn, gaps will appear due to the unevenness of the valve stem surface, resulting in medium leakage. Summary of the Invention

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A regulating valve with a leakage prevention mechanism, comprising: A valve body, the top of the valve body is rotatably connected with a control component, and a buffer component is fixedly connected inside the valve body; A contact component, 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; 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; When closing the valve body, by rotating the rotating rod, the rotating rod drives the valve stem to rotate threadedly in the valve body, so that the valve stem drives the valve core to move downward. At the same time, the valve stem moves downward threadedly inside the outflow housing, and lubrication work is carried out on the side of the valve stem, thereby avoiding the phenomenon of rust on the side of the valve stem. The valve stem drives the valve core to continue moving downward until the valve core abuts against the sealing groove, thereby closing the valve body; Preferably, the contact component includes a contact housing and a connecting block. The side of the contact housing is fixedly connected to the inside of the valve body. The side of the connecting block is slidably connected to the inside of the valve body. The connecting block is arranged above the contact housing. The inside of the connecting block is threadedly connected to the side of the valve stem. A storage mechanism is fixedly connected to the inside of the contact housing, and an outflow mechanism is fixedly connected to the middle inside of the contact housing; When the valve stem moves downward in a threaded manner, it drives the connecting block to move downward inside the valve body, so that the connecting block drives the connecting shaft to move downward inside the inner cavity of the storage housing. At the same time, the connecting shaft drives the extrusion plate to move downward for extrusion, so that the extrusion plate squeezes the sponge block in the storage housing; The action of the valve stem moving downward in a threaded manner will automatically trigger the extrusion and lubrication process of the lubricating oil. When the valve stem movement requires lubrication, the lubrication system will work synchronously to achieve lubrication on demand, avoiding the cumbersome process of manually adding lubricating oil regularly and reducing the problem of untimely lubrication caused by human negligence; Preferably, the outflow mechanism includes an outflow housing, the inner side of the outflow housing is threadedly connected to the side of the valve stem, through holes are evenly opened on the side of the outflow housing, and the side of the outflow housing is fixedly connected to the inner side of the contact housing; Preferably, the storage mechanism includes a storage housing, a connecting plate and a sponge block. The side of the storage housing is fixedly connected to the inner side of the contact housing. The side of the connecting plate is fixedly connected to the top of the inner cavity of the contact housing. A connecting shaft is slidably connected inside the storage housing. The top of the connecting shaft is fixedly connected to the bottom of the connecting block. The bottom of the connecting shaft is fixedly connected to an extrusion plate. The inner side of the extrusion plate is slidably connected to the side of the outflow housing. The sponge block is arranged at the bottom of the inner cavity of the storage housing. An outflow pipe is fixedly connected to the bottom of the inner cavity of the storage housing. The bottom of the outflow pipe is fixedly connected to the inner side of the sponge block; By adding an appropriate amount of lubricating oil into the inner cavity of the storage housing and providing an outflow pipe at the bottom of the storage housing, the lubricating oil in the storage housing can enter the sponge block through the outflow pipe. By squeezing the sponge block with the extrusion plate, the lubricating oil absorbed by the sponge block is extruded. The lubricating oil extruded from the sponge block flows out through the through holes evenly opened on the outflow housing, so that when the valve body moves downward, the side of the valve stem can be lubricated; Good lubrication can reduce the wear between the valve stem and the packing, make the packing fit the valve stem better, help maintain the sealing performance of the valve, reduce the risk of medium leakage, and improve the working efficiency and safety of the valve; Preferably, the buffer member includes a valve seat. The side of the valve seat is fixedly connected to the inner side of the valve body. A sealing groove is opened in the middle of the top of the valve seat. Buffer mechanisms are fixedly connected to both the upper and lower sides of the valve seat; When the valve body is opened and a large amount of flow medium passes through the valve seat, the flow medium impacts the buffer mechanism, so as to buffer the rapidly passing flow medium, thus avoiding the phenomenon that when the valve body is opened, the impact speed of the flow medium on the valve core is too large and too fast, which will cause too much impact on the valve core; Preferably, the buffer mechanism includes a buffer housing, the side of the buffer housing is fixedly connected to the inner side of the valve seat, a buffer rod is slidably connected to the inner side of the buffer housing, a ring is fixedly connected to the side of the buffer rod, a connecting spring is sleeved on the buffer rod, one end of the connecting spring is fixedly connected to the ring, the other end of the connecting spring is 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 side of the buffer rod away from the ring inside the buffer rod; By providing a buffer groove on the buffer rod and setting the side of the buffer rod close to the buffer groove to be inclined; 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, 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 relief grooves are evenly formed on the sides of the connecting sleeve and the scraper.

[0005] The present invention provides a regulating valve with a leakage prevention mechanism. It has the following beneficial effects: 1. For the regulating valve with a leakage prevention mechanism, a contact component is provided. Lubrication can reduce the friction between the valve stem and the stuffing box, reduce wear caused by friction. When the surface of the valve stem is less worn, it can better fit with the packing, and the packing can more tightly fill the gap between the valve stem and the stuffing box, thereby reducing the possibility of medium leakage and improving the sealing performance of the valve.

[0006] 2. For the regulating valve with a leakage prevention mechanism, an outflow mechanism is provided. Good lubrication can make the valve stem move more smoothly in the stuffing box. When the valve is closed, the valve stem can reach the sealing position more accurately, and when the packing is subjected to the pressure of the valve stem, it can deform more evenly to achieve good sealing. At the same time, lubrication can also prevent the packing from drying, hardening or being damaged due to excessive friction, and maintain the elasticity and sealing performance of the packing.

[0007] 3. For the regulating valve with a leakage prevention mechanism, a buffer mechanism is provided. When the buffer rod moves in the buffer housing, if a large amount of flowing medium adheres to it, it may cause an increase in the friction force between the buffer rod and the buffer housing, resulting in a jamming phenomenon. By scraping and cleaning the side of the buffer rod with a scraper to scrape off the adhering flowing medium, this situation can be effectively avoided, ensuring that the buffer rod can move smoothly in the buffer housing, enabling the buffer mechanism to play its buffer role normally, and ensuring the stability and reliability of the regulating valve when subjected to the impact of the flowing medium.

[0008] 4. The regulating valve with anti-leakage mechanism is provided with a scraper assembly. The setting of the give way groove avoids excessive contact force between the scraper and the buffer rod. If the contact force is too large, the scraper will cause excessive scratches on the surface of the buffer rod, damage the surface finish of the buffer rod, and even destroy its structural integrity. Reasonable contact force can not only ensure the cleaning effect of the scraper on the medium, but also protect the buffer rod from excessive wear and maintain the stable performance of the buffer rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of a regulating valve with an anti-leakage mechanism of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a schematic structural diagram of the contact component of the present invention; Figure 4 It is a structural schematic diagram of the outflow mechanism of the present invention; Figure 5 It is a structural schematic diagram of the storage mechanism of the present invention; Figure 6 It is a structural schematic diagram of the storage housing of the present invention; Figure 7 It is a schematic structural diagram of the buffer component of the present invention; Figure 8 It is a structural schematic diagram of the valve seat of the present invention; Figure 9 It is a structural schematic diagram of the buffer mechanism of the present invention; Figure 10 It is a schematic structural diagram of the scraper assembly of the present invention.

[0010] In the figure: 1. valve body; 2. control component; 21. rotating rod; 22. valve stem; 23. valve core; 3. contact component; 31. contact shell; 32. connecting block; 33. storage mechanism; 331. storage shell; 332. connecting plate; 333. connecting shaft; 334. sponge block; 335. extrusion plate; 336. outflow pipe; 34. outflow mechanism; 341. outflow shell; 342. through hole; 4. buffer component; 41. valve seat; 42. sealing groove; 43. buffer mechanism; 431. buffer shell; 432. buffer rod; 433. buffer groove; 434. connecting spring; 435. scraper assembly; 4351. connecting sleeve; 4352. give way groove; 4353. scraper; 436. ring. DETAILED DESCRIPTION

[0011] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0012] Please refer to Figure 1 - Figure 2 , the present invention provides a technical solution: a regulating valve with a leakage prevention mechanism, including: A valve body 1, a control component 2 is rotatably connected to the top of the valve body 1, and a buffer component 4 is fixedly connected to the inner side of the valve body 1; A contact component 3, the side of the contact component 3 is fixedly connected to the inner side of the valve body 1, and the inner side of the contact component 3 is threadedly connected to the side of the control component 2; The control component 2 includes a valve stem 22, a rotating rod 21 is fixedly connected to the top of the valve stem 22, and a valve core 23 is fixedly connected to the bottom of the valve stem 22; When closing the valve body 1, by rotating the rotating rod 21, the rotating rod 21 drives the valve stem 22 to perform a threaded rotation in the valve body 1, so that the valve stem 22 drives the valve core 23 to move downward. At the same time, the valve stem 22 moves downward in a threaded manner inside the outflow housing 341, and lubrication work is carried out on the side of the valve stem 22, thereby avoiding the phenomenon of rust 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; Please refer to Figure 1 - Figure 3 , the 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 inner side of the valve body 1. The side of the connecting block 32 is slidably connected to the inner side of the valve body 1. The connecting block 32 is arranged above the contact housing 31. The inner side 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 inner side of the contact housing 31, and an outflow mechanism 34 is fixedly connected to the middle of the inner side of the contact housing 31; When the valve stem 22 moves downward in a threaded manner, it drives the connecting block 32 to move downward inside the valve body 1, so that the connecting block 32 drives the connecting shaft 333 to move downward inside the inner cavity of the storage housing 331. At the same time, the connecting shaft 333 drives the pressing plate 335 to move downward and squeeze, so that the pressing plate 335 squeezes the sponge block 334 in the storage housing 331; The downward threaded movement of the valve stem 22 will automatically trigger the extrusion and lubrication process of the lubricating oil. When the valve stem 22 needs lubrication during movement, the lubrication system will work synchronously to achieve lubrication on demand, avoiding the cumbersome process of manually adding lubricating oil regularly and reducing the problem of untimely lubrication caused by human negligence; Please refer to Figure 1 - Figure 4 , the outflow mechanism 34 includes an outflow housing 341. The inner side of the outflow housing 341 is threadedly connected to the side surface of the valve stem 22. Through holes 342 are evenly formed on the side surface of the outflow housing 341. The side surface of the outflow housing 341 is fixedly connected to the inner side of the contact housing 31; Please refer to Figure 1 - Figure 6 , the storage mechanism 33 includes a storage housing 331, a connecting plate 332, and a sponge block 334. The side surface of the storage housing 331 is fixedly connected to the inner side of the contact housing 31. The side surface of the connecting plate 332 is fixedly connected to the top of the inner cavity of the contact housing 31. A connecting shaft 333 is slidably connected to the inner side of the storage housing 331. The top of the connecting shaft 333 is fixedly connected to the bottom of the connecting block 32. The bottom of the connecting shaft 333 is fixedly connected to a pressing plate 335. The inner side of the pressing plate 335 is slidably connected to the side surface of the outflow housing 341. The sponge block 334 is arranged at the bottom of the inner cavity of the storage housing 331. An outflow pipe 336 is fixedly connected to the bottom of the inner cavity of the storage housing 331. The bottom of the outflow pipe 336 is fixedly connected to the inner side of the sponge block 334; By adding an appropriate amount of lubricating oil into the inner cavity of the storage housing 331 and providing an outflow 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 outflow pipe 336. The sponge block 334 is squeezed by the pressing plate 335, so that the lubricating oil absorbed by the sponge block 334 is extruded. The lubricating oil extruded from the sponge block 334 flows out through the through holes 342 evenly formed on the outflow housing 341, so that when the valve body 1 moves downward, the side surface of the valve stem 22 can be lubricated; Good lubrication can reduce the wear between the valve stem 22 and the packing, make the packing fit the valve stem 22 better, help maintain the sealing performance of the valve, reduce the risk of medium leakage, and improve the working efficiency and safety of the valve; Please refer to Figure 1 - Figure 8 , the present invention provides a technical solution: the buffer member 4 includes a valve seat 41. The side surface of the valve seat 41 is fixedly connected to the inner side of the valve body 1. A sealing groove 42 is formed in the middle of the top of the valve seat 41. Buffer mechanisms 43 are fixedly connected to both the upper and lower sides of the valve seat 41; When the valve body 1 is opened, when a large amount of flow medium passes through the valve seat 41, the flow medium impacts the buffer mechanism 43, so as to buffer the rapidly passing flow medium, thereby avoiding the phenomenon that when the valve body 1 is opened, the impact speed of the flow medium on the valve core 23 is too large and too fast, which will cause too much impact on the valve core 23; Please refer to Figure 1 - Figure 9The buffer mechanism 43 includes a buffer shell 431, the side of the buffer shell 431 is fixedly connected to the inner side of the valve seat 41, 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 ring 436, 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, and the other end of the connecting spring 434 is fixedly connected to the inner wall of the buffer shell 431, a buffer groove 433 is provided on the side of the buffer rod 432 away from the valve seat 41, and a scraper assembly 435 is fixedly connected to the inner side of the buffer rod 432 away from the ring 436; A buffer groove 433 is formed on the buffer rod 432, and a side of the buffer rod 432 close to the buffer groove 433 is set to be inclined; The existence 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 may be deformed to a certain extent to absorb part of the impact energy. At the same time, the side of the buffer rod 432 close to the buffer groove 433 is set to be inclined, which can guide the flow medium to flow along the inclined surface, so that the impact force is dispersed and avoids being concentrated on the valve seat 41, thereby more effectively buffering the impact force of the flow medium on the valve seat 41 and protecting the valve seat 41 from damage caused by excessive impact. See also Figure 1 - Figure 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 shell 431, the upper and lower sides of the connecting sleeve 4351 are fixedly connected with scrapers 4353, the side of the scraper 4353 away from the buffer shell 431 is in contact with the side of the buffer rod 432, and the sides of the connecting sleeve 4351 and the scraper 4353 are evenly provided with clearance grooves 4352; When the buffer rod 432 is impacted by the flow medium, the buffer rod 432 is impacted and moved toward the buffer housing 431. At the same time, the connection spring 434 is squeezed and a scraper 4353 is provided on the inner side of the buffer housing 431. When the buffer rod 432 is impacted by the flow medium and moves inside the buffer housing 431, the scraper 4353 cleans and scrapes the side of the buffer rod 432, thereby scraping off the flow medium attached to the buffer rod 432, thereby preventing a large amount of flow medium from being attached to the buffer rod 432 when the buffer rod 432 is in contact with the flow medium for a long time. At the same time, the scraper 4353 and the connection sleeve 4351 are evenly provided with the makeshift grooves 4352, thereby preventing the contact force between the scraper 4353 and the buffer rod 432 from being too large. The flow medium may contain impurities or corrosive components. If they adhere to the buffer rod 432 for a long time, it will accelerate the wear and corrosion of the buffer rod 432, shorten its service life. Scraping off the adhered medium in time can reduce the contact time between the buffer rod 432 and these harmful components, reduce the degree of wear and corrosion, thereby prolong the overall service life of the buffer mechanism 43, and reduce the maintenance cost and replacement frequency of the equipment.

[0013] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the scope of protection of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A regulating valve with a leakage prevention mechanism, characterized in that, Comprising: A valve body (1), a control component (2) is rotatably connected to the top of the valve body (1), and a buffer component (4) is fixedly connected to the inside of the valve body (1); A contact component (3), the side of the contact component (3) is fixedly connected to the inside of the valve body (1), and the inside of the contact component (3) is threadedly connected to the side of the control component (2); The control component (2) includes a valve stem (22), a rotating rod (21) is fixedly connected to the top of the valve stem (22), and a valve core (23) is fixedly connected to the bottom of the valve stem (22); The 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), the side of the connecting block (32) is slidably connected to the inside of the valve body (1), the connecting block (32) is arranged above the contact housing (31), 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).

2. The control valve with a leakage prevention mechanism according to claim 1, characterized in that: The outflow mechanism (34) includes an outflow housing (341), the inside of the outflow housing (341) is threadedly connected to the side of the valve stem (22), through holes (342) are evenly formed in the side of the outflow housing (341), and the side of the outflow housing (341) is fixedly connected to the inside of the contact housing (31).

3. The regulating valve with a leakage prevention mechanism according to claim 2, wherein: The storage mechanism (33) includes a storage housing (331), a connecting plate (332) and a sponge block (334), the side of the storage housing (331) is fixedly connected to the inside of the contact housing (31), the side of the connecting plate (332) is fixedly connected to the top of the inner cavity of the contact housing (31), a connecting shaft (333) is slidably connected to the inside of the storage housing (331), a pressing plate (335) is fixedly connected to the bottom of the connecting shaft (333), the sponge block (334) is arranged at the bottom of the inner cavity of the storage housing (331), and an outflow pipe (336) is fixedly connected to the bottom of the inner cavity of the storage housing (331).

4. The regulating valve with a leakage prevention mechanism according to claim 3, characterized in that: The bottom of the outflow pipe (336) is fixedly connected to the inside of the sponge block (334), the top of the connecting shaft (333) is fixedly connected to the bottom of the connecting block (32), and the inside of the pressing plate (335) is slidably connected to the side of the outflow housing (341).

5. The regulating valve with a leakage prevention mechanism according to claim 1, characterized in that: The buffer component (4) includes a valve seat (41), the side of the valve seat (41) is fixedly connected to the inside of the valve body (1), a sealing groove (42) is formed in the middle of the top of the valve seat (41), and buffer mechanisms (43) are fixedly connected to both the upper and lower sides of the valve seat (41).

6. The regulating valve with a leakage prevention mechanism according to claim 5, characterized in that: The buffer mechanism (43) includes a buffer housing (431), 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 surface of the buffer rod (432), a connecting spring (434) is sleeved on the buffer rod (432), a buffer groove (433) is formed on the side of the buffer rod (432) away from the valve seat (41), and a scraper assembly (435) is fixedly connected to the side of the buffer rod (432) away from the ring (436) on the inner side.

7. The regulating valve with a leakage prevention mechanism according to claim 6, characterized in that: The side surface of the buffer housing (431) is fixedly connected to the inner side of the valve seat (41), one end of the connecting spring (434) is fixedly connected to the ring (436), and the other end of the connecting spring (434) is fixedly connected to the inner wall of the buffer housing (431).

8. The regulating valve with a leakage prevention mechanism according to claim 6, characterized in that: The scraper assembly (435) includes a connecting sleeve (4351), scrapers (4353) are fixedly connected to both the upper and lower sides of the connecting sleeve (4351), and relief grooves (4352) are uniformly formed on the side surfaces of the connecting sleeve (4351) and the scrapers (4353).

9. The regulating valve with a leakage prevention mechanism according to claim 8, characterized in that: The side surface of the connecting sleeve (4351) is fixedly connected to the inner side of the buffer housing (431), and the side of the scraper (4353) away from the buffer housing (431) is in contact with the side surface of the buffer rod (432).

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