High-precision super-long valve rod

Abstract

The application provides a high-precision super-long valve rod, and relates to the technical field of valve rods.The high-precision super-long valve rod comprises a butt joint assembly, the butt joint assembly comprises a connecting rod block, the connecting core block is fixed to the bottom of the cylindrical protrusion of the connecting rod block, the top of the butt joint assembly is provided with a transmission assembly, and the outside of the transmission assembly is provided with a maintenance assembly.Pre-breakage grooves are equidistantly formed on the outer wall of the middle rod body, so that the torsion force borne by the middle rod body as a whole is concentrated on the surrounding area of the pre-breakage grooves when the middle rod body is twisted, the breaking point is controlled in the pre-breakage grooves when the middle rod body is broken due to long-time use, and the broken middle rod body can be repaired in the later period, so that the problem that the rod body structure is usually in a cylindrical state, the torsion force bearing position cannot be accurately controlled during transmission, the breaking point cannot be controlled when the rod body is broken after long-time use, the broken rod body is inconvenient to replace, and the valve core cannot be controlled is solved.

Description

Technical Field

[0001] This invention relates to the field of valve stem technology, and in particular to a high-precision, ultra-long valve stem. Background Technology

[0002] The valve stem is an important component of a valve, used for transmission. It connects to the actuator or handle at the top and directly drives the valve core to move or rotate, thereby realizing the valve's opening, closing, or regulating function. During rotation, the valve stem plays a role in transmitting force and bears the torque borne by the top handle. To facilitate the control of the valve core and due to the requirements of its working environment, its length varies. In environments where the distance between the handle and the valve core is large, an extra-long valve stem is required.

[0003] Currently, traditional extra-long valve stems typically have a cylindrical structure, making it difficult to precisely control the torque bearing position during transmission. This results in the inability to control the break point when the stem breaks after prolonged use, making replacement inconvenient and hindering valve core control. Furthermore, because the stem is rotatably connected to the valve body, the connection point is prone to rust after long-term use, affecting the stem's condition. The small distance between the connection points also makes maintenance difficult. Summary of the Invention

[0004] This disclosure relates to a high-precision, ultra-long valve stem, which includes a transmission assembly and a maintenance assembly. By equidistantly opening pre-break grooves on the outer wall of the intermediate rod, the torque borne by the intermediate rod during torque rotation is concentrated around the pre-break grooves. This ensures that if breakage occurs due to prolonged use, the breakage point is controlled within the pre-break grooves, facilitating subsequent repair. Furthermore, by opening a seepage groove on the indirect cylinder and connecting it to the contact point between the intermediate rod and the indirect cylinder, the internally stored lubricant is continuously seeped into the indirect cylinder, preventing the contact point between the intermediate rod and the indirect cylinder from locking due to rust, thus facilitating its use.

[0005] In a first aspect, this disclosure provides a high-precision, ultra-long valve stem, specifically comprising a docking assembly; the docking assembly includes a connecting rod block, a connecting core block, and a docking groove; the connecting core block has a cylindrical structure, and two sets of spiral grooves are formed on its outer wall, the connecting core block being fixedly connected to the bottom of the cylindrical protrusion of the connecting rod block; a transmission assembly is provided at the top of the docking assembly, and a maintenance assembly is provided on the outside of the transmission assembly; the transmission assembly includes an intermediate rod body, a sleeve groove, and a pre-cut groove; the intermediate rod body is sleeved on the top of the connecting rod block, and the intermediate rod body is connected to the docking groove, the sleeve groove and the docking groove being aligned. Connection; the pre-break groove is an annular groove, and the pre-break groove is equidistantly opened on the outer wall of the intermediate rod; the maintenance component includes an indirect cylinder, a seepage groove, and a leak-proof rubber ring; the indirect cylinder is rotatably connected to the outer wall of the intermediate rod, and the leak-proof rubber ring is sleeved on the outer wall of the intermediate rod; the seepage groove is an annular groove, the inner wall of the seepage groove is provided with a slope, and rectangular through holes are equidistantly opened on the inner wall of the seepage groove, and the seepage groove is opened at the top of the indirect cylinder; the highest contact section between the connecting rod block and the sleeve groove leads to the contact line; the lowest fracture section of the pre-break groove leads to the lowest fracture line.

[0006] In at least some embodiments, the connecting rod block is a cylindrical structure, with a rectangular protrusion on the upper bottom surface and a cylindrical protrusion on the lower bottom surface.

[0007] In at least some embodiments, the docking assembly further includes a seepage-proof inclined groove; the docking groove is a rectangular groove, and there are three sets of docking grooves, which are equidistantly arranged on the outer wall of the connecting rod block; the seepage-proof inclined groove is an annular groove with an inclined surface, and is arranged on the outer wall of the connecting rod block, and is connected to the three sets of docking grooves respectively.

[0008] In at least some embodiments, the intermediate rod is a cylindrical rod structure with a cylindrical protrusion connected to the bottom of the intermediate rod; the socket groove is a cylindrical groove with a rectangular groove connected to the top of the socket groove, and three sets of rectangular protrusions are provided on the inner wall of the socket groove, with the socket groove located at the bottom of the cylindrical protrusion of the intermediate rod.

[0009] In at least some embodiments, the transmission assembly further includes a connecting block; the connecting block is a cylindrical structure, the top of the connecting block is provided with a threaded rod-like structure, the top of the connecting block has a rectangular groove, and the connecting block is fixed to the top of the intermediate rod.

[0010] In at least some embodiments, the maintenance component includes an outer slot; the indirect cylinder is a cylindrical structure with a rectangular plate on its outer wall, and four sets of fastening grooves are provided on the rectangular plate; the outer slot is a rectangular groove, and there are four sets of outer slots, which are respectively provided on the outer wall of the rectangular plate of the indirect cylinder.

[0011] In at least some embodiments, the maintenance component further includes a mounting groove; the mounting groove is configured as an annular groove and is formed on the inner wall of the indirect cylinder.

[0012] In at least some embodiments, the maintenance component further includes a plug ring; the leak-proof rubber ring is configured as an annular structure and is fitted inside the mounting groove; the plug ring is configured as an annular structure, and the outer wall of the plug ring has an annular protrusion, and the plug ring is inserted into the seepage groove.

[0013] The high-precision ultra-long valve stem provided by this invention has the following beneficial effects:

[0014] The bottom of the connector block of the present invention is provided with two sets of spiral grooves. After the connector block is inserted into the valve core, it is connected with the valve core through the two sets of spiral grooves, which avoids the connector block being pulled out directly from the valve core. At the same time, after connection, the two sets of spiral grooves can effectively increase the contact area with the core and concentrate the torque point around the spiral grooves, avoiding excessive torque that could cause the insertion position to break.

[0015] In addition, a connecting rod block and an intermediate rod are provided. By opening a docking groove on the connecting rod block and an adjustment groove on the intermediate rod, the contact area during the docking process is increased, so as to increase the firmness of the connection. By opening pre-break grooves at equal intervals on the outer wall of the intermediate rod, it is easy to control the breakage position at what torque, so as to facilitate later maintenance.

[0016] In addition, a seepage groove and an indirect cylinder are provided. The intermediate rod is fixed to the valve body through the indirect cylinder, avoiding direct connection between the intermediate rod and the valve body, which would allow for replacement by direct disassembly. By opening the seepage groove at the top of the indirect cylinder, the intermediate rod can be internally seeped during rotation, preventing the two from locking due to rust and facilitating use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0019] In the attached diagram:

[0020] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present invention is shown;

[0021] Figure 2 A schematic diagram of the overall bottom view structure according to an embodiment of the present invention is shown;

[0022] Figure 3A schematic diagram of the exploded structure according to an embodiment of the present invention is shown;

[0023] Figure 4 A schematic diagram of the exploded bottom view structure according to an embodiment of the present invention is shown;

[0024] Figure 5 A schematic diagram of a partially cut-out structure according to an embodiment of the present invention is shown;

[0025] Figure 6 The invention illustrates an embodiment of the invention by Figure 5 A schematic diagram of the enlarged structure of section A;

[0026] Figure 7 A schematic diagram of the docking component assembly structure according to an embodiment of the present invention is shown;

[0027] Figure 8 A schematic diagram of the transmission component assembly structure according to an embodiment of the present invention is shown;

[0028] Figure 9 A schematic diagram of the main view structure of the transmission assembly according to an embodiment of the present invention is shown;

[0029] Figure 10 A schematic diagram of the maintenance component assembly structure according to an embodiment of the present invention is shown.

[0030] List of reference numerals

[0031] 1. Connecting assembly; 101. Connecting rod block; 102. Connecting core block; 103. Connecting groove; 104. Leak-proof inclined groove;

[0032] 2. Transmission assembly; 201. Intermediate rod; 202. Sleeve groove; 203. Pre-break groove; 204. Handle block;

[0033] 3. Maintenance components; 301. Indirect conduit; 302. External retaining groove; 303. Leakage tank; 304. Mounting groove; 305. Leak-proof rubber ring; 306. Plug ring;

[0034] 4. Contact wire;

[0035] 5. Lowest breaking line. Detailed Implementation

[0036] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0037] Example 1: Please refer to Figures 1 to 10This invention proposes a high-precision, ultra-long valve stem, including a docking assembly 1. The docking assembly 1 includes a connecting rod block 101, a connecting core block 102, and a docking groove 103. The connecting core block 102 has a cylindrical structure, and two sets of spiral grooves are formed on its outer wall. The connecting core block 102 is fixed to the bottom of the cylindrical protrusion of the connecting rod block 101. The connecting core block 102 is used to connect to the valve core through the two sets of spiral grooves on its outer wall via a spiral insertion method. This concentrates the stress point around the spiral grooves during valve core control, preventing breakage at the docking position and facilitating its operation. For use; the top of the docking assembly 1 is provided with a transmission assembly 2, and the outside of the transmission assembly 2 is provided with a maintenance assembly 3; the transmission assembly 2 includes an intermediate rod 201, a sleeve groove 202, and a pre-break groove 203; the intermediate rod 201 is sleeved on the top of the connecting rod block 101, and the intermediate rod 201 is connected to the docking groove 103, and the sleeve groove 202 is connected to the docking groove 103; the pre-break groove 203 is an annular groove, and the pre-break groove 203 is equidistantly opened on the outer wall of the intermediate rod 201; the pre-break groove 203 is used to concentrate the stress in the groove when the intermediate rod 201 is subjected to external force, which facilitates the... When the force is too great, the fracture position is controlled within the pre-fracture groove 203 to avoid the fracture position being uncontrollable and to facilitate later maintenance and replacement; the maintenance component 3 includes an indirect cylinder 301, a seepage groove 303 and a leak-proof rubber ring 305; the indirect cylinder 301 is rotatably connected to the outer wall of the intermediate rod 201, and the leak-proof rubber ring 305 is fitted on the outer wall of the intermediate rod 201; the seepage groove 303 is an annular groove, the inner wall of the seepage groove 303 is provided with a slope, and rectangular through holes are equally spaced on the inner wall of the seepage groove 303, and the seepage groove 303 is opened at the top of the indirect cylinder 301; The seepage groove 303 is used to assist in storing lubricating liquid, so that lubricating liquid can seep into the interior through the rectangular through hole during the rotation of the intermediate rod 201, preventing the intermediate rod 201 and the connecting cylinder 301 from locking due to rust, and facilitating long-term use of the valve body; the contact line 4 is drawn from the highest contact section between the connecting rod block 101 and the sleeve groove 202; the contact line 4 is used to indicate the highest contact position between the connecting rod block 101 and the sleeve groove 202; the lowest fracture line 5 is drawn from the lowest fracture section of the pre-break groove 203; the lowest fracture line 5 is used to show the lowest fracture position of the intermediate rod 201.

[0038] Example 2: Based on Example 1, as follows Figure 7As shown, the connecting rod block 101 has a cylindrical structure. A rectangular protrusion is located on the upper bottom surface of the connecting rod block 101, and a cylindrical protrusion is located on the lower bottom surface of the connecting rod block 101. The connecting rod block 101 is used to fix the connecting core block 102 and connect with the intermediate rod body 201, thereby cooperating with the intermediate rod body 201 to control the valve core. After the intermediate rod body 201 breaks or is removed, the rectangular protrusion at the top, in conjunction with the connecting core block 102, controls the valve core for temporary valve control. The docking assembly 1 also includes an anti-seepage inclined groove 104. The docking groove 103 is a rectangular groove, and three sets of docking grooves 103 are provided, with the three sets of docking grooves 103 equidistantly arranged on the connecting rod. On the outer wall of the rod block 101; the mating groove 103 is used to increase the contact position with the sleeve groove 202 so that the intermediate rod 201 and the connecting rod block 101 are tightly connected, which facilitates the synchronous rotation of the two; the anti-seepage inclined groove 104 is set as an annular groove, and the anti-seepage inclined groove 104 is provided with an inclined surface. The anti-seepage inclined groove 104 is set on the outer wall of the connecting rod block 101, and the anti-seepage inclined groove 104 is connected to three sets of mating grooves 103 respectively; the anti-seepage inclined groove 104 is used to contact the bottom of the intermediate rod 201, so as to avoid blocking the liquid inside the valve body through the inclined surface while maintaining stability, and to prevent liquid seepage, thereby facilitating the maintenance of the valve body's sealing performance.

[0039] In this embodiment of the disclosure, such as Figure 8 and Figure 9 As shown, the intermediate rod 201 is a cylindrical rod structure, with a cylindrical protrusion connected to its bottom. The intermediate rod 201 assists in fixing the connecting block 204, ensuring its stability while transmitting external torque. This facilitates the control of the valve core by the connecting rod block 101 and the connecting core block 102, making the valve body easier to use. The sleeve groove 202 is a cylindrical groove, with a rectangular groove connected to its top. Three sets of rectangular protrusions are provided on the inner wall of the sleeve groove 202. The sleeve groove 202 is located at the bottom of the cylindrical protrusion of the intermediate rod 201. The sleeve groove 202 assists the intermediate rod 201 in docking with the connecting rod block 101, and also facilitates the connection between the intermediate rod 201 and the connecting rod block 101. The grooves 103 are positioned opposite each other to maintain a tight connection between the intermediate rod 201 and the connecting rod block 101, which facilitates the control of the valve core. The transmission assembly 2 also includes a connecting handle block 204. The connecting handle block 204 has a cylindrical structure, and a threaded rod-like structure is provided on the top of the connecting handle block 204. A rectangular groove is opened on the top of the connecting handle block 204, and the connecting handle block 204 is fixed to the top of the intermediate rod 201. The connecting handle block 204 is used to connect with an external control handle through the threaded rod-like structure, and to lock the control handle through the rectangular groove on the top, so as to keep the intermediate rod 201 and the external control handle synchronized, which facilitates the control of the valve core and the use of the valve body.

[0040] In this embodiment of the disclosure, such as Figure 6 and Figure 10As shown, the maintenance component 3 includes an outer retaining groove 302; the indirect cylinder 301 is a cylindrical structure with a rectangular plate on its outer wall, and four sets of fastening grooves are provided on the rectangular plate; the indirect cylinder 301 is used to assist in constraining the intermediate rod 201, and at the same time, while maintaining the stability of the rod, it fixes the entire structure of the valve rod to the valve body, so as to control the valve core and facilitate the use of the valve body; the outer retaining groove 302 is a rectangular groove, and there are four sets of outer retaining grooves 302, which are respectively provided on the outer wall of the rectangular plate of the indirect cylinder 301; the outer retaining groove 302 is used to remove the indirect cylinder 301 by inserting an external tool into the outer retaining groove 302 when the valve rod is removed, so as to maintain the valve body; the maintenance component 3 also includes a mounting groove 304; the mounting groove 304 is set as an annular groove for mounting The groove 304 is formed on the inner wall of the indirect cylinder 301; the mounting groove 304 is used to assist in the installation of the anti-leakage rubber ring 305, so as to keep the indirect cylinder 301 stable during the connection with the intermediate rod 201; the maintenance component 3 also includes a plug ring 306; the anti-leakage rubber ring 305 is set as a ring-shaped structure, and the anti-leakage rubber ring 305 is stuck inside the mounting groove 304; the anti-leakage rubber ring 305 is used to block the gap between the intermediate rod 201 and the indirect cylinder 301, so as to maintain the overall sealing of the valve stem and avoid liquid leakage; the plug ring 306 is set as a ring-shaped structure, and the outer wall of the plug ring 306 is provided with a ring-shaped protrusion, and the plug ring 306 is inserted into the seepage groove 303; the plug ring 306 is used to block the top of the seepage groove 303 to prevent the internal lubricant from flowing out, thereby facilitating the lubrication of the intermediate rod 201 and the indirect cylinder 301.

[0041] The specific usage and function of this embodiment: In this invention, during assembly, after the anti-leakage rubber ring 305 is inserted into the mounting groove 304, the indirect cylinder 301 and the intermediate rod body 201 are rotatably connected. When connecting the valve stem and the valve body, the connecting rod block 101 is inserted into the valve body and connected to the valve core through the threaded groove on the outer wall of the connecting core block 102. Then, the indirect cylinder 301 is inserted into the valve body, and the connection between the two is strengthened by bolts. During the fixing of the indirect cylinder 301, the intermediate rod body 201 and the connecting rod block 101 are aligned, so that the connecting rod block 101... Insert it into the socket 202, and during the insertion process, the socket 202 and the docking groove 103 are docked. After the connecting cylinder 301 is fixed, the intermediate rod 201 and the connecting rod block 101 are also docked, and the bottom of the intermediate rod 201 contacts the inclined surface of the seepage prevention trough 104. Then, lubricant is added to the seepage tank 303, and after the addition is completed, the plug ring 306 is inserted into the seepage tank 303. Then, the external rotating handle is inserted into the connecting handle block 204, and after it is stabilized by the rectangular groove, it is locked with the nut to make it easy to maintain the tightness of the connection.

[0042] When in use, the external handle is rotated so that the torque is transmitted sequentially through the handle block 204, the intermediate rod 201, the connecting rod block 101, and the connecting core block 102, so as to control the valve core and adjust the valve body. During the rotation of the intermediate rod 201, the lubricating fluid in the seepage groove 303 continuously seeps into the gap between the intermediate rod 201 and the connecting cylinder 301 to maintain the lubrication of the connection between the two and prevent locking due to rust after long-term use.

[0043] When repairing a broken intermediate rod 201, the pre-break groove 203 is created on the outer wall of the intermediate rod 201, causing stress concentration at the pre-break groove 203 position, which facilitates control of the breakage point of the intermediate rod 201. When the breakage location is not within the lowest pre-break groove 203, an external tool is inserted into the lowest pre-break groove 203, allowing the broken intermediate rod 201 to be removed and replaced under the action of the external tool, so that the valve body can be directly inspected and repaired. When the breakage location is within the lowest pre-break groove 203, because the contact line 4 is higher than the lowest breakage line 5, when the intermediate rod 201 breaks, the top rectangular protrusion of the connecting rod block 101 is exposed. Under the action of an external tool, the rectangular protrusion can temporarily drive the bottom valve core to rotate, so as to avoid affecting the normal use of the valve body after the breakage. Then, by inserting an external tool into the outer groove 302, the connecting cylinder 301 is removed to expose the intermediate rod 201, and then the intermediate rod 201 is replaced.

[0044] The following points should be noted in this article:

[0045] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0046] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0047] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A high-precision ultra-long valve stem, comprising a docking assembly (1); the docking assembly (1) comprises a connecting rod block (101), a connecting core block (102), and a docking groove (103); the connecting core block (102) is a cylindrical structure, and two sets of spiral grooves are formed on the outer wall of the connecting core block (102), and the connecting core block (102) is fixedly connected to the bottom of the cylindrical protrusion of the connecting rod block (101); characterized in that, The top of the docking assembly (1) is provided with a transmission assembly (2), and the outside of the transmission assembly (2) is provided with a maintenance assembly (3); the transmission assembly (2) includes an intermediate rod (201), a sleeve groove (202), and a pre-break groove (203); the intermediate rod (201) is sleeved on the top of the connecting rod block (101), the intermediate rod (201) is connected in the docking groove (103), and the sleeve groove (202) opened on the intermediate rod (201) is connected to the docking groove (103) opened on the connecting rod block (101); the pre-break groove (203) is an annular groove, and the pre-break groove (203) is equidistantly opened on the outer wall of the intermediate rod (201); the maintenance assembly (3) includes a connecting cylinder (30 1) Leakage groove (303) and leak-proof rubber ring (305); the indirect cylinder (301) is rotatably connected to the outer wall of the intermediate rod (201), and the leak-proof rubber ring (305) is sleeved on the outer wall of the intermediate rod (201); the leakage groove (303) is an annular groove, the inner wall of the leakage groove (303) is provided with a slope, and rectangular through holes are equidistantly opened on the inner wall of the leakage groove (303). The leakage groove (303) is opened at the top of the indirect cylinder (301); the highest contact section of the connecting rod block (101) and the sleeve groove (202) leads out the contact line (4); the lowest fracture section of the pre-break groove (203) leads out the lowest fracture line (5), and the contact line (4) is higher than the lowest fracture line (5).

2. The high-precision ultra-long valve stem according to claim 1, characterized in that: The connecting rod block (101) has a cylindrical structure. The upper bottom surface of the connecting rod block (101) is provided with a rectangular protrusion, and the lower bottom surface of the connecting rod block (101) is provided with a cylindrical protrusion.

3. The high-precision ultra-long valve stem according to claim 1, characterized in that: The docking assembly (1) also includes a seepage-proof inclined groove (104); the docking groove (103) is a rectangular groove, and there are three sets of docking grooves (103). The three sets of docking grooves (103) are respectively equidistantly arranged on the outer wall of the connecting rod block (101); the seepage-proof inclined groove (104) is a circular groove, and there is an inclined surface on the seepage-proof inclined groove (104). The seepage-proof inclined groove (104) is arranged on the outer wall of the connecting rod block (101), and the seepage-proof inclined groove (104) is connected to the three sets of docking grooves (103) respectively.

4. The high-precision ultra-long valve stem according to claim 1, characterized in that: The intermediate rod (201) is a cylindrical rod structure, and a cylindrical protrusion is connected to the bottom of the intermediate rod (201); the sleeve groove (202) is a cylindrical groove, and a rectangular groove is connected to the top of the sleeve groove (202). Three sets of rectangular protrusions are provided on the inner wall of the sleeve groove (202), and the sleeve groove (202) is opened at the bottom of the cylindrical protrusion of the intermediate rod (201).

5. A high-precision ultra-long valve stem according to claim 1, characterized in that: The transmission assembly (2) also includes a connecting block (204); the connecting block (204) is a cylindrical structure, the top of the connecting block (204) is provided with a threaded rod structure, the top of the connecting block (204) is provided with a rectangular groove, and the connecting block (204) is fixed to the top of the intermediate rod (201).

6. A high-precision ultra-long valve stem according to claim 1, characterized in that: The maintenance component (3) includes an outer slot (302); the indirect cylinder (301) is a cylindrical structure, and a rectangular plate is provided on the outer wall of the indirect cylinder (301), and four sets of fastening grooves are provided on the rectangular plate of the indirect cylinder (301); the outer slot (302) is a rectangular groove, and there are four sets of outer slots (302), and the four sets of outer slots (302) are respectively provided on the outer wall of the rectangular plate of the indirect cylinder (301).

7. A high-precision ultra-long valve stem according to claim 1, characterized in that: The maintenance component (3) also includes a mounting groove (304); the mounting groove (304) is configured as an annular groove and is formed on the inner wall of the indirect cylinder (301).

8. A high-precision ultra-long valve stem according to claim 7, characterized in that: The maintenance component (3) also includes a plug ring (306); the leak-proof rubber ring (305) is configured as a ring structure and is inserted into the installation groove (304); the plug ring (306) is configured as a ring structure and has a ring-shaped protrusion on its outer wall and is inserted into the seepage groove (303).

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