A high-efficiency leak-proof threaded cartridge valve

Abstract

The utility model discloses a high -efficient sealed anti -leakage's threaded plug-in valve relates to threaded plug-in valve technical field, the utility model discloses a valve body, the valve body surface is provided with fixed establishment, the fixed establishment includes the fixed frame, the fixed frame bottom is fixedly connected with the valve body, the fixed frame inner chamber one side is rotatably connected with the tightening plate through the bearing, the number of tightening plate is two, one side fixed connection has of tightening plate the warped board, the utility model discloses fixed frame and the valve body fixed connection form rigid support base, provide stable carrier for tightening operation, and the operator only needs to cock the warped board to drive the tightening plate to come out from the fixed frame and rotate, does not need to rely on external wrench and other tools, can effectively reduce the operating strength, avoids the direct contact of external tool and valve body simultaneously, prevents the accidental scratch, the knock of valve body surface in the operation process, protects the valve body appearance and the integrity of sealing surface.

Description

Technical Field

[0001] This utility model belongs to the field of threaded cartridge valve technology, and in particular relates to a highly efficient, leak-proof threaded cartridge valve. Background Technology

[0002] As a key component in this system for realizing fluid flow control and pressure regulation, the installation stability and sealing performance of the threaded cartridge valve directly determine the system's operating efficiency, energy consumption, and service life. Under high-pressure and high-frequency conditions, improving the installation stability and sealing reliability of the threaded cartridge valve is a key technical requirement for adapting to high-pressure and high-frequency conditions and reducing equipment maintenance costs.

[0003] Chinese patent application CN207178338U discloses a threaded cartridge valve, relating to the field of hydraulic valve technology. It includes a valve sleeve with a valve bore, a working port connecting the valve bore to a hydraulic cylinder, a hydraulic control port connecting the valve bore to an oil tank, an oil inlet, and an oil return port. The valve bore contains a check valve core for controlling the connection between the oil inlet and the working port for oil supply or unloading, a hydraulic control valve core for controlling the separation of the check valve core from the working port for connecting the oil inlet and the working port for unloading, and an overflow valve core for disconnecting the valve bore from the oil return port. The overflow valve core has a damping orifice connecting the valve bore and the oil return port for unloading, and one end of the damping orifice has an unloading valve core for controlling the connection between the damping orifice and the oil return port. The check valve core has a connecting channel connecting the valve bore and the working port for overflow or unloading. This utility model uses an integrated threaded cartridge valve, enabling rapid advance and slow retraction of the hydraulic cylinder and thermal overflow functions, resulting in lower production costs and less installation space required.

[0004] The above technologies effectively reduce production costs. In the existing technology, the threaded cartridge valve lacks a dedicated tightening structure during installation and requires the use of external wrenches and other tools for installation. This can easily lead to slippage due to the tool not fitting tightly against the valve body surface, resulting in uneven application of installation torque. This makes it impossible to ensure a tight fit between the valve body and the mounting seat, leaving potential sealing gaps. Furthermore, improper operation may cause scratches on the valve body surface, affecting subsequent sealing performance.

[0005] To address these issues, we provide a highly efficient, leak-proof, threaded cartridge valve. Utility Model Content

[0006] The purpose of this utility model is to provide a highly efficient, leak-proof threaded cartridge valve. By combining the fixing mechanism and the sealing mechanism, it solves the problem that existing threaded cartridge valves lack a dedicated tightening structure during installation and require external wrenches or other tools for installation.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a highly efficient, leak-proof, threaded cartridge valve, comprising a valve body. A fixing mechanism is provided on the surface of the valve body, the fixing mechanism including a fixing frame. The bottom of the fixing frame is fixedly connected to the valve body. A tightening plate is movably connected to one side of the inner cavity of the fixing frame via a bearing. There are two tightening plates. A rocker plate is fixedly connected to one side of each tightening plate. The surface of the tightening plate is provided with a first anti-slip texture. The fixing frame is vertically positioned in the middle of the valve body surface, and its bottom is rigidly fixed to the valve body surface via spot welding. Two sets of bearing mounting holes are symmetrically reserved at the top of the frame. Each set of holes is fitted with a deep groove ball bearing, and the outer ring of the bearing is interference-fitted with the mounting hole. A connecting shaft is provided on one end of the inner side of each tightening plate and fixed to the inner ring of the corresponding bearing, allowing them to rotate independently around the bearing without interference. A rocker plate is vertically welded to one end of the outer side of each tightening plate. In its natural state, the two tightening plates retract... The valve body is housed within the mounting bracket, with the rocker plates symmetrically fitted to the left and right outer walls of the bracket. The overall structure is compact and does not occupy extra space. During installation, the operator uses their fingers to press the rocker plates on both sides, leveraging the principle to rotate the corresponding tightening plates outwards. This causes the two plates to disengage simultaneously and open symmetrically. At this point, the tightening plates can be joined together to rotate the valve body, allowing the valve body to be tightened by engaging with the mounting seat through the threads. After installation, pressing the rocker plates in the opposite direction allows the two tightening plates to be retracted back into the mounting bracket. The tightening plates allow for installation without external wrenches, relying solely on hand strength, significantly reducing operational intensity. The storage design saves space, and the self-locking threads effectively prevent loosening caused by vibration. The anti-slip texture enhances grip stability and effectively prevents direct contact between external tools and the valve body, avoiding scratches and bumps, protecting the valve body's appearance and the integrity of the sealing surface, and indirectly extending the overall service life of the valve.

[0009] The present invention is further configured such that a sealing mechanism is provided in the inner cavity of the valve body. The sealing mechanism includes a first sealing ring, the surface of which is fixedly connected to the valve body. A retaining ring is provided at the bottom of the first sealing ring, and a second sealing ring is provided at the bottom of the retaining ring. A chromium coating is provided at the bottom of the second sealing ring. The retaining ring, the second sealing ring, and the chromium coating are all fixedly connected to the valve body. The fixed connection between the first sealing ring and the valve body forms a primary sealing barrier, which tightly fits the sealing surface to prevent fluid penetration. The retaining ring not only serves as a limit to prevent the sealing ring from shifting under high pressure, but also effectively disperses the squeezing force of the fluid on the sealing ring, avoiding permanent deformation due to excessive squeezing of the sealing ring, and ensuring long-term tight contact of the sealing surface. The second sealing ring forms a secondary seal, which, together with the first sealing ring, forms a double redundant protection. Even if one layer experiences slight wear, the other layer can still maintain the basic sealing effect, significantly reducing the risk of leakage. The chromium coating has high hardness and high wear resistance, and can directly withstand the long-term relative motion friction between the connecting rod and the sealing part, reducing wear and tear on the sealing surface.

[0010] The present invention is further configured such that a guide plate is fitted inside the valve body cavity. The guide plate provides guidance and stable support for the valve core and the connecting rod, ensuring the operational stability of the valve. The guide plate is fitted inside the valve body cavity and fixed to the valve body. Its inner cavity forms a regular sliding channel, which limits the movement trajectory of the connecting rod, prevents the valve core from deviating or getting stuck during reciprocating motion, and ensures that the sealing surface of the valve core and the sealing mechanism are always aligned, reducing wear caused by uneven local force.

[0011] The present invention is further configured such that a connecting rod is sleeved in the inner cavity of the guide plate, and a valve core is movably connected to the bottom of the connecting rod through a bearing. The connecting rod can stably transmit the operating force of the hand-tightening plate and enable the valve core to respond quickly under different working conditions, thereby realizing the opening or closing or adjustment of the first through hole and the second through hole, and controlling the fluid flow and pressure.

[0012] The present invention is further configured such that a spring is sleeved on the surface of the connecting rod, and the top of the spring is fixedly connected to the guide plate. The spring is sleeved on the surface of the connecting rod and the top is fixedly connected to the guide plate, so as to provide continuous downward pressure to the valve core, ensure that the valve core and the sealing surface are tightly fitted, buffer the impact when the valve core moves, and avoid damage to the sealing surface due to excessive instantaneous force.

[0013] The present invention is further configured such that a fixing thread is provided at the bottom of the valve body surface, and the fixing thread engages with the internal thread of the downstream pipeline to achieve rigid fixation of the valve body and the connecting component.

[0014] The present invention is further configured such that a hand-tightening plate is fixedly connected to the top of the connecting rod, and the surface of the hand-tightening plate is provided with a second anti-slip texture. The hand-tightening plate is fixed to the top of the connecting rod, so that the valve core position can be manually adjusted without relying on external tools, which is suitable for rapid on-site debugging.

[0015] The present invention is further configured such that a first through hole is opened at the bottom of the valve body surface, and a second through hole is opened at the bottom of the valve body. The first through hole and the second through hole form a multi-dimensional flow channel, and the valve core can control the opening and closing of the first through hole and the second through hole.

[0016] The present invention has the following beneficial effects.

[0017] 1. This utility model forms a rigid support base by fixing the fixed frame to the valve body, providing a stable carrier for tightening operations. The operator only needs to pull the pry bar to drive the tightening plate out of the fixed frame and rotate it, without relying on external wrenches or other tools. This can effectively reduce the intensity of operation, and at the same time avoid direct contact between external tools and the valve body, preventing accidental scratches and bumps to the valve body surface during operation, and protecting the appearance of the valve body and the integrity of the sealing surface.

[0018] 2. This utility model forms a double sealing structure through the first sealing ring and the second sealing ring. The tight fit of the two sealing surfaces blocks fluid penetration from different positions, creating a redundant protection system. At the same time, the retaining ring at the bottom of the first sealing ring can effectively disperse the pressure of the high-pressure fluid on the sealing ring, preventing the sealing ring from permanent deformation due to excessive compression, and ensuring that the sealing surface always maintains a tight fit. The chromium coating has high hardness and high wear resistance, and can directly withstand the long-term relative motion friction between the connecting rod and the sealing part, reducing the wear and loss of the sealing surface and maintaining the flatness of the sealing surface. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 A perspective view of a highly efficient, leak-proof threaded cartridge valve.

[0021] Figure 2 A sectional perspective view of a highly efficient, leak-proof threaded cartridge valve.

[0022] Figure 3 Right perspective view of a highly efficient, leak-proof threaded cartridge valve.

[0023] Figure 4 For a high-efficiency, leak-proof threaded cartridge valve Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0024] Figure 5 Right-side sectional perspective view of a threaded cartridge valve that provides a high-efficiency, leak-proof seal.

[0025] Figure 6 For a high-efficiency, leak-proof threaded cartridge valve Figure 5 A magnified schematic diagram of the structure at point B in the middle.

[0026] In the attached diagram: 1. Valve body; 2. Fixing mechanism; 21. Fixing bracket; 22. Tightening plate; 23. Rocker plate; 3. Sealing mechanism; 31. First sealing ring; 32. Retaining ring; 33. Second sealing ring; 34. Chrome coating; 4. Guide plate; 5. Connecting rod; 6. Valve core; 7. Spring; 8. Hand-tightening plate; 9. First through hole; 10. Second through hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Please see Figure 1-6This utility model is a high-efficiency sealing and leak-proof threaded cartridge valve, including a valve body 1. A fixing mechanism 2 is provided on the surface of the valve body 1. The fixing mechanism 2 includes a fixing frame 21. The bottom of the fixing frame 21 is fixedly connected to the valve body 1. A tightening plate 22 is movably connected to one side of the inner cavity of the fixing frame 21 through a bearing. There are two tightening plates 22. A rocker plate 23 is fixedly connected to one side of the tightening plate 22. The surface of the tightening plate 22 is provided with a first anti-slip texture.

[0029] Specifically: The fixing frame 21 is vertically installed in the middle of the valve body 1 surface, and its bottom is rigidly fixed to the valve body 1 surface by spot welding. Two sets of bearing mounting holes are symmetrically reserved at the top of the frame. Each set of holes is equipped with a deep groove ball bearing, and the outer ring is interference-fitted with the mounting hole. One end of the inner side of each tightening plate 22 is provided with a connecting shaft and fixed to the inner ring of the corresponding bearing. They can rotate independently around the bearings without interfering with each other. One end of the outer side of each tightening plate 22 is vertically welded with a rocker plate 23. In the natural state, the two tightening plates 22 are stored in the inner cavity of the fixing frame 21, and the rocker plates 23 are symmetrically attached to the left and right outer walls of the fixing frame 21. The overall structure is compact and does not occupy extra space. During installation, the operator uses their fingers to press the rocker plates 23 on both sides, using the lever principle to move the load. The corresponding tightening plate 22 rotates outward, causing both to disengage synchronously and open symmetrically. At this time, the tightening plate 22 can rotate the valve body 1, allowing the valve body 1 to be fastened by engaging with the mounting seat through threads. After installation, the two tightening plates 22 can be retracted back into the fixing bracket 21 by reverse-pulling the rocker plate 23. The tightening plates 22 can be installed without external wrenches, relying solely on hand strength, which greatly reduces the intensity of operation. The storage design saves space, and the self-locking thread effectively prevents loosening caused by vibration. The anti-slip texture improves grip stability and effectively avoids direct contact between external tools and the valve body 1, preventing scratches and bumps, protecting the appearance and sealing surface integrity of the valve body 1, and indirectly extending the overall service life of the valve.

[0030] A sealing mechanism 3 is provided in the inner cavity of the valve body 1. The sealing mechanism 3 includes a first sealing ring 31, the surface of which is fixedly connected to the valve body 1. A retaining ring 32 is provided at the bottom of the first sealing ring 31, and a second sealing ring 33 is provided at the bottom of the retaining ring 32. A chromium coating 34 is provided at the bottom of the second sealing ring 33. The surfaces of the retaining ring 32, the second sealing ring 33, and the chromium coating 34 are all fixedly connected to the valve body 1. A guide plate 4 is sleeved in the inner cavity of the valve body 1. A connecting rod 5 is sleeved in the inner cavity of the guide plate 4. A valve core 6 is movably connected to the bottom of the connecting rod 5 through a bearing. A spring 7 is sleeved on the surface of the connecting rod 5. The top of the spring 7 is fixedly connected to the guide plate 4. A fixing thread is provided on the bottom surface of the valve body 1. A hand-tightening plate 8 is fixedly connected to the top of the connecting rod 5. A second anti-slip texture is provided on the surface of the hand-tightening plate 8. A first through hole 9 and a second through hole 10 are provided on the bottom surface of the valve body 1.

[0031] Specifically: The first sealing ring 31 is fixedly connected to the valve body 1 to form a primary sealing barrier, tightly fitting the sealing surface to prevent fluid penetration. The retaining ring 32 not only serves as a limit to prevent the sealing ring from shifting under high pressure, but also effectively disperses the pressure of the fluid on the sealing ring, avoiding excessive compression and permanent deformation, ensuring long-term tight contact of the sealing surface. The second sealing ring 33 forms a secondary seal, creating double redundancy protection with the first sealing ring 31. Even if one layer experiences slight wear, the other layer can still maintain the basic sealing effect, significantly reducing the risk of leakage. The chromium coating 34 has high hardness and high wear resistance, and can directly withstand the long-term relative motion friction between the connecting rod 5 and the sealing part, reducing wear and tear on the sealing surface. The guide plate 4 provides guidance and stable support for the valve core 6 and the connecting rod 5, ensuring the operational stability of the valve. The guide plate 4 is sleeved in the inner cavity of the valve body 1 and fixed to the valve body 1. Its inner cavity forms a regular sliding channel, limiting the movement trajectory of the connecting rod 5 and preventing the valve core 6 from reciprocating. If misalignment or jamming occurs during movement, ensure that the sealing surfaces of valve core 6 and sealing mechanism 3 are always aligned to reduce wear caused by uneven local force. Connecting rod 5 can stably transmit the operating force of hand-tightening plate 8 and enable valve core 6 to respond quickly under different working conditions, realizing the opening or closing or adjustment of the first through hole 9 and the second through hole 10, controlling fluid flow and pressure. Spring 7 is sleeved on the surface of connecting rod 5 and fixedly connected to guide plate 4 at the top, providing continuous downward pressure to valve core 6, ensuring that valve core 6 and sealing surface are tightly fitted, buffering the impact during valve core 6 movement, and avoiding damage to the sealing surface due to excessive instantaneous force. The fixing thread engages with the internal thread of the downstream pipeline to achieve rigid fixation of valve body 1 and connecting parts. Hand-tightening plate 8 is fixed to the top of connecting rod 5, allowing manual adjustment of valve core 6 position without relying on external tools, adapting to rapid on-site debugging. The first through hole 9 and the second through hole 10 form a multi-dimensional flow channel, and the valve core 6 can control the opening and closing of the first through hole 9 and the second through hole 10.

[0032] The working principle of this utility model is as follows: First, the valve body 1 is engaged with the internal thread of the mounting seat or downstream pipeline through the fixed thread to initially achieve a rigid connection. Then, the operator pulls the two rocker plates 23 respectively, which drives the two tightening plates 22 to rotate outward around the deep groove ball bearings on the corresponding sides, so that they are simultaneously disengaged from the inner cavity of the fixing frame 21 and are in a symmetrical open state. At this time, the operator can combine the tightening plates 22 and apply force to rotate the valve body 1. The rotation of the valve body 1 makes the fixed thread and the connecting parts tightly fit together. After the installation is completed, the rocker plates 23 are pulled in the opposite direction to put the two tightening plates 22 back into the inner cavity of the fixing frame 21.

[0033] During use, the first sealing ring 31 is fixedly connected to the valve body 1 to form a primary seal, tightly fitting the sealing surface to prevent fluid penetration. The retaining ring 32 limits the first sealing ring 31 to prevent displacement under high pressure conditions, while also dispersing fluid extrusion pressure to prevent permanent deformation of the sealing ring. The second sealing ring 33 forms a secondary seal, constituting double redundancy protection with the first sealing ring 31. Even if one layer experiences slight wear, the other layer can still maintain the sealing effect. The chromium coating 34, with its high hardness and high wear resistance, withstands the long-term relative motion friction between the connecting rod 5 and the sealing part, reducing wear on the sealing surface and extending the sealing life. The operator can rotate the connecting rod 5 synchronously by turning the hand lever 8. The bottom of the connecting rod 5 is movably connected to the valve core 6 through a bearing, realizing the opening or closing or adjustment of the first through hole 9 and the second through hole 10 of the valve body 1. The top of the spring 7 is fixed to the guide plate 4, providing continuous downward pressure to the valve core 6 to ensure that the valve core 6 fits tightly with the sealing surface. When the valve core 6 is subjected to operating force or fluid pressure, the spring 7 buffers the impact through elastic deformation to avoid damage to the sealing surface.

[0034] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A high-efficiency, leak-proof threaded cartridge valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a fixing mechanism (2) on its surface; The fixing mechanism (2) includes a fixing frame (21), the bottom of which is fixedly connected to the valve body (1). A tightening plate (22) is movably connected to one side of the inner cavity of the fixing frame (21) via a bearing. There are two tightening plates (22). A rocker plate (23) is fixedly connected to one side of the tightening plate (22). The surface of the tightening plate (22) is provided with a first anti-slip texture.

2. The threaded cartridge valve with high efficiency sealing and leak prevention according to claim 1, characterized in that: The valve body (1) is provided with a sealing mechanism (3) in its inner cavity. The sealing mechanism (3) includes a first sealing ring (31). The surface of the first sealing ring (31) is fixedly connected to the valve body (1). A retaining ring (32) is provided at the bottom of the first sealing ring (31). A second sealing ring (33) is provided at the bottom of the retaining ring (32). A chromium coating (34) is provided at the bottom of the second sealing ring (33). The surfaces of the retaining ring (32), the second sealing ring (33), and the chromium coating (34) are all fixedly connected to the valve body (1).

3. The threaded cartridge valve with high efficiency sealing and leak prevention according to claim 1, characterized in that: The valve body (1) is fitted with a guide plate (4) inside.

4. The threaded cartridge valve with high efficiency sealing and leak prevention according to claim 3, characterized in that: The guide plate (4) is fitted with a connecting rod (5), and the bottom of the connecting rod (5) is movably connected to a valve core (6) via a bearing.

5. A high-efficiency sealing and leak-proof threaded cartridge valve according to claim 4, characterized in that: A spring (7) is fitted on the surface of the connecting rod (5), and the top of the spring (7) is fixedly connected to the guide plate (4).

6. The threaded cartridge valve with high efficiency sealing and leak prevention according to claim 1, characterized in that: The valve body (1) has a fixing thread on the bottom surface.

7. A high-efficiency sealing and leak-proof threaded cartridge valve according to claim 4, characterized in that: The top of the connecting rod (5) is fixedly connected to a hand-tightening plate (8), and the surface of the hand-tightening plate (8) is provided with a second anti-slip texture.

8. The threaded cartridge valve with high efficiency sealing and leak prevention according to claim 1, characterized in that: The valve body (1) has a first through hole (9) at the bottom of its surface and a second through hole (10) at the bottom of its surface.

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