A valve seat assembly for a quick-change valve

Abstract

The utility model discloses a valve seat module of quick replacement valve, it includes: valve body and valve seat module, be equipped with the installation cavity in the valve body, and the annular groove is seted up in the cavity inner wall and is embedded and sets up the elastic sealing ring, and the valve seat module realizes quick installation and dismounting through the positioning block and locking mechanism. The locking mechanism includes locking ring and drive assembly, and drive assembly drives locking ring axial movement to compress the valve seat module. Preferably set up guide column, handle and drain hole, improve operation convenience and maintenance efficiency. The application can shorten the valve seat replacement time significantly, improve sealing performance and operating stability, facilitate residual medium discharge simultaneously, reduce environmental pollution, be suitable for all kinds of industrial pipeline system.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve seat assembly that can be quickly replaced. Background Technology

[0002] Valves are key components in fluid transport systems used to control fluid flow, and are widely used in petroleum, chemical, power, and water treatment industries. The valve seat, as one of the core components, plays a sealing and supporting role, and its performance directly affects the valve's sealing effect and service life. In actual use, valve seats are prone to wear, corrosion, or damage due to long-term contact with the medium and exposure to pressure and temperature changes, thus requiring regular maintenance or replacement.

[0003] Currently, in common valve designs, valve seats are typically embedded inside the valve body using bolts or other methods. While this installation method ensures a certain level of sealing and stability, replacing the valve seat often requires disassembling the entire valve, or even partially dismantling the piping system. Such operations are not only time-consuming but can also disrupt the normal operation of the system, especially in scenarios requiring rapid restoration of service. Furthermore, while partially removable valve seat designs in existing technologies can simplify the replacement process to some extent, their high structural complexity and relatively high technical requirements for operators still limit their practical application.

[0004] Therefore, to address the aforementioned issues, there is an urgent need to provide a valve seat assembly that is simple in structure, easy to operate, and capable of rapid replacement, in order to meet the requirements of efficient maintenance and improve the overall system reliability. Utility Model Content

[0005] The purpose of this utility model is to provide a valve seat assembly that can be quickly replaced, thus solving the problems mentioned in the background art.

[0006] This invention is implemented as follows: a quick-replaceable valve seat assembly includes a valve body and a valve seat module. The valve body has an installation cavity with an annular groove on its inner wall. An elastic sealing ring is embedded in the annular groove. The valve seat module is installed in the installation cavity through the elastic sealing ring engaging with the annular groove. The valve seat module includes a valve seat body, a positioning block, and a locking mechanism. The valve seat body has a positioning groove on its outer periphery, which engages with the positioning block. The positioning block is fixedly connected to the inner wall of the installation cavity for radial positioning of the valve seat module. The locking mechanism includes a locking ring and a driving assembly. The locking ring is sleeved on the outer periphery of the valve seat body and threadedly connected to the inner wall of the installation cavity. The driving assembly drives the locking ring to move axially, thereby pressing the valve seat module into the installation cavity.

[0007] Preferably, the drive assembly includes a drive gear and a transmission rod. The drive gear is fixedly connected to the outer periphery of the locking ring. One end of the transmission rod is provided with a rack, which meshes with the drive gear. The other end of the transmission rod extends to the outside of the valve body and is provided with a knob. By rotating the knob, the transmission rod is moved, thereby causing the drive gear to rotate and driving the locking ring to move axially.

[0008] Preferably, a guide post is provided at the bottom of the valve seat body, and a guide hole is provided at the bottom of the mounting cavity. The guide post and the guide hole are used in conjunction to guide the valve seat module axially, ensuring that the valve seat module remains stable during installation.

[0009] Preferably, there are multiple positioning blocks, which are evenly distributed along the inner wall of the mounting cavity. Each positioning block has a slope on its top, which is inclined toward the mounting direction of the valve seat body, to guide the positioning groove to align with the positioning block when the valve seat module is installed.

[0010] Preferably, the inner wall of the locking ring is provided with a pressure pad, which is made of an elastic material and is used to provide an additional sealing effect when the locking ring presses against the valve seat module.

[0011] Preferably, the valve body is provided with a cover plate at the top, the cover plate is fixedly connected to the valve body by bolts, the cover plate is provided with a through hole at the center position, the through hole is used to accommodate the transmission rod of the drive assembly, and the cover plate is provided with a sealing gasket at the bottom, the sealing gasket is in contact with the top of the valve seat body, and is used to further enhance the sealing performance.

[0012] Preferably, a handle is provided on the top of the valve seat body, and the handle is connected to the valve seat body by a hinge. The handle is used to provide a force point when disassembling the valve seat module, so as to facilitate the operator to quickly remove the valve seat module.

[0013] Preferably, the cross-sectional shape of the elastic sealing ring is trapezoidal, with the long side of the trapezoid facing the inner wall of the mounting cavity and the short side of the trapezoid facing the valve seat body. This design can improve the deformation capacity of the elastic sealing ring under pressure, thereby enhancing the sealing effect.

[0014] Preferably, the outer wall of the valve body is provided with reinforcing ribs, which are distributed along the axial and radial directions of the valve body to improve the overall strength and pressure resistance of the valve body.

[0015] Preferably, the bottom of the valve body is provided with a drain hole, which communicates with the mounting cavity. A sealing plug is provided on the drain hole to drain the residual medium in the mounting cavity when maintaining or replacing the valve seat module.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1) The valve seat assembly that can be quickly replaced achieves rapid positioning of the valve seat module through the cooperation of the positioning block and the positioning groove. Combined with the use of the locking ring and the drive assembly, the installation and disassembly of the valve seat module can be completed quickly without disassembling the entire valve or pipeline system, which significantly shortens the replacement time and improves maintenance efficiency.

[0018] 2) The valve seat assembly, which can be quickly replaced, uses a double sealing design of elastic sealing ring and compression gasket. While ensuring the sealing effect, it allows for a certain installation error, reduces the technical requirements for operators, and improves the ease of use.

[0019] 3) The valve seat assembly, which can be quickly replaced, ensures that the valve seat module remains stable during installation through the cooperation of the guide post and guide hole, avoiding sealing failure due to misalignment. At the same time, the handle design further simplifies the disassembly process, making the operation more efficient.

[0020] 4) The valve seat assembly, which can be quickly replaced, is designed with a drain hole, which can quickly drain the residual medium in the installation cavity when maintaining or replacing the valve seat module, avoiding medium leakage and environmental pollution, and also facilitating subsequent cleaning and inspection. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a schematic diagram of the first explosive structure of this utility model.

[0023] Figure 3 This is a schematic diagram of the second explosive structure of this utility model.

[0024] Figure 4 This is a schematic diagram of the third explosive structure of this utility model.

[0025] Figure 5 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0026] Figure 6 For the present utility model Figure 3 Enlarged structural diagram at point B.

[0027] The attached figures are labeled as follows:

[0028] 1. Valve body; 2. Valve seat module; 3. Elastic sealing ring; 4. Locking ring; 5. Drive gear; 6. Transmission rod; 7. Knob; 8. Guide post; 9. Handle; 10. Positioning block. Detailed Implementation

[0029] This utility model relates to a quick-replaceable valve seat assembly, whose structure mainly includes a valve body 1, a valve seat module 2, an elastic sealing ring 3, a locking ring 4, a drive assembly, a positioning block 10, and other components. The following description, in conjunction with the appendix... Figure 1 To be continued Figure 3 The specific embodiments of this utility model will be described in detail.

[0030] like Figure 1 As shown, the valve body 1 is the main load-bearing part of the overall structure, and its interior has a mounting cavity for accommodating and fixing the valve seat module 2. An annular groove is formed on the inner wall of the mounting cavity, and an elastic sealing ring 3 is embedded within the annular groove. The elastic sealing ring 3 has a trapezoidal cross-sectional shape, with its long side facing the inner wall of the mounting cavity and its short side facing the valve seat module 2. This design improves the deformation capacity of the elastic sealing ring 3 under pressure, thereby enhancing the sealing effect. The valve seat module 2 is installed in the mounting cavity through the cooperation of the elastic sealing ring 3 and the annular groove, forming a preliminary sealing connection.

[0031] Valve seat module 2 includes a valve seat body, a positioning groove, a guide post 8, and a handle 9. For example... Figure 2 As shown, a positioning groove is provided on the outer periphery of the valve seat body. The positioning groove cooperates with the positioning block 10. The positioning block 10 is fixedly connected to the inner wall of the mounting cavity. Multiple positioning blocks 10 are evenly distributed along the inner wall of the mounting cavity. Each positioning block 10 has an inclined surface on its top, which is inclined towards the installation direction of the valve seat body. This is used to guide the positioning groove and the positioning block 10 to align during the installation of the valve seat module 2, thereby achieving radial limiting. A guide post 8 is provided at the bottom of the valve seat body. The guide post 8 cooperates with the guide hole at the bottom of the mounting cavity to axially guide the valve seat module 2, ensuring that the valve seat module 2 remains stable during installation and avoiding sealing failure caused by displacement. A handle 9 is connected to the top of the valve seat body by a hinge, providing a force point when disassembling the valve seat module 2, making it easy for operators to quickly remove the valve seat module 2.

[0032] The locking ring 4 is fitted onto the outer circumference of the valve seat body and threadedly connected to the inner wall of the mounting cavity. A pressure pad, made of elastic material, is provided on the inner wall of the locking ring 4 to provide additional sealing when the locking ring 4 presses against the valve seat module 2. The locking ring 4 moves axially via a drive assembly, which includes a drive gear 5, a transmission rod 6, and a knob 7. Figure 3 As shown, the drive gear 5 is fixedly connected to the outer periphery of the locking ring 4. One end of the transmission rod 6 is provided with a rack, which meshes with the drive gear 5. The other end of the transmission rod 6 extends to the outside of the valve body 1 and is provided with a knob 7. When the knob 7 is rotated, the transmission rod 6 drives the rack to move, and the rack meshes with the drive gear 5, causing the drive gear 5 to rotate, thereby driving the locking ring 4 to move axially and pressing the valve seat module 2 into the mounting cavity, completing the final fixation and sealing.

[0033] A cover plate is provided on the top of the valve body 1, and the cover plate is fixedly connected to the valve body 1 by bolts. A through hole is provided at the center of the cover plate to accommodate the transmission rod 6 of the drive assembly. A sealing gasket is provided at the bottom of the cover plate, which contacts the top of the valve seat body to further enhance the sealing performance. In addition, the outer wall of the valve body 1 is provided with reinforcing ribs, which are distributed along the axial and radial directions of the valve body 1 to improve the overall strength and pressure resistance of the valve body 1. A drain hole is provided at the bottom of the valve body 1, which communicates with the mounting cavity. A sealing plug is provided on the drain hole to drain residual media in the mounting cavity during maintenance or replacement of the valve seat module 2, so as to avoid media leakage and environmental pollution, and also to facilitate subsequent cleaning and inspection.

[0034] In practical applications, when valve seat module 2 needs to be replaced, first rotate knob 7 to make transmission rod 6 drive drive gear 5 to rotate. Drive gear 5 drives locking ring 4 to move upward along the axial direction, releasing the clamping effect on valve seat module 2. Then, the operator can remove valve seat module 2 from the installation cavity through handle 9. Due to the inclined design of positioning block 10, valve seat module 2 can automatically align during installation without additional adjustment, improving installation efficiency. After removing the old valve seat module 2, the new valve seat module 2 can be placed into the installation cavity. The cooperation between guide post 8 and guide hole ensures that valve seat module 2 remains stable during installation. Finally, rotate knob 7 in the opposite direction to make locking ring 4 move downward along the axial direction, pressing valve seat module 2 into the installation cavity, completing the replacement process.

[0035] In the above embodiments, the rapid positioning of the valve seat module 2 is achieved through the cooperation of the positioning block 10 and the positioning groove. Combined with the use of the locking ring 4 and the drive assembly, the installation and removal of the valve seat module 2 can be completed without disassembling the entire valve or pipeline system, significantly shortening the replacement time and improving maintenance efficiency. The double sealing design of the elastic sealing ring 3 and the compression gasket ensures the sealing effect while allowing for a certain installation error, reducing the technical requirements for operators. The cooperation of the guide post 8 and the guide hole ensures that the valve seat module 2 remains stable during installation, avoiding sealing failure due to misalignment. The design of the handle 9 further simplifies the disassembly process, making the operation more efficient. The design of the drain hole allows for the rapid discharge of residual media in the installation cavity when maintaining or replacing the valve seat module 2, preventing media leakage from polluting the environment, and also facilitating subsequent cleaning and inspection.

[0036] The above description clearly illustrates the specific embodiments of this utility model and the connection, positional, and cooperative relationships between its components. Those skilled in the art can fully implement the technical solution of this utility model based on the above content.

[0037] To enable those skilled in the art to fully understand and implement the technical solution of this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0038] In actual operation, when it is necessary to replace the valve seat module 2, the drive assembly is first activated by rotating the knob 7. One end of the transmission rod 6 is equipped with a rack, which meshes with the drive gear 5. Therefore, rotating the knob 7 causes the transmission rod 6 to move the rack, thereby rotating the drive gear 5. The rotation of the drive gear 5 further drives the locking ring 4 to move upwards along the threaded inner wall of the mounting cavity, releasing the locking ring 4 from the pressure on the valve seat module 2. The key to this process lies in the axial movement design of the locking ring 4, which achieves smooth up-and-down movement through a threaded connection. Simultaneously, the pressure pad on the inner wall of the locking ring 4 is made of elastic material, providing additional sealing effect under pressure. After the pressure is released, the elastic material can return to its original shape, facilitating the removal of the valve seat module 2.

[0039] Subsequently, the operator can remove the valve seat module 2 from the mounting cavity using the handle 9. The handle 9 is hinged to the top of the valve seat body, providing a leverage point for operation and making the disassembly process more convenient. When removing the old valve seat module 2, the guide post 8 engages with the guide hole at the bottom of the mounting cavity to ensure the valve seat module 2 remains stable during disassembly, preventing jamming or damage due to misalignment. In addition, the beveled design of the positioning block 10 guides the valve seat module 2 to automatically align during installation, thereby significantly improving installation efficiency and reducing the time required for manual adjustment.

[0040] When installing the new valve seat module 2, it is first placed into the mounting cavity. At this time, the positioning groove on the outer periphery of the valve seat body engages with the positioning block 10 fixed to the inner wall of the mounting cavity. Multiple positioning blocks 10 are evenly distributed along the inner wall of the mounting cavity, and the inclined guide groove quickly aligns with the positioning block 10, completing radial positioning. Simultaneously, the guide post 8 at the bottom of the valve seat body is inserted into the guide hole at the bottom of the mounting cavity, ensuring that the valve seat module 2 remains axially stable during installation and preventing sealing failure due to misalignment. The engagement of the guide post 8 and the guide hole not only improves installation accuracy but also reduces operational difficulty, allowing even operators without highly skilled expertise to complete the installation smoothly.

[0041] After the initial positioning of the valve seat module 2 is completed, the knob 7 is rotated in the opposite direction, causing the transmission rod 6 to drive the drive gear 5 to rotate in the opposite direction, thereby driving the locking ring 4 to move axially downwards and pressing the valve seat module 2 into the mounting cavity. The inner wall of the locking ring 4 is provided with a pressure pad made of elastic material. Under the action of the locking ring 4, the pressure pad applies uniform pressure to the valve seat module 2, further enhancing the sealing effect. In addition, the elastic sealing ring 3 embedded in the inner wall of the mounting cavity, through its trapezoidal cross-section design, can undergo greater deformation under pressure, thereby filling any possible tiny gaps and ensuring the reliability of the sealing performance.

[0042] Throughout the maintenance or replacement process, the drain hole design at the bottom of valve body 1 plays a crucial role. Before disassembling valve seat module 2, the sealing plug on the drain hole can be opened to drain any residual media in the mounting cavity, preventing media leakage and environmental pollution. It also facilitates subsequent cleaning and inspection. The drain hole design, combined with the sealing gasket at the bottom of the cover plate, further enhances the overall sealing performance, ensuring safe operation under high pressure or high temperature conditions.

[0043] The above steps clearly demonstrate the operating principle of this utility model in practical applications and the synergistic effect between its components. Through the cooperation of the positioning block 10 and the positioning groove, the cooperation of the guide post 8 and the guide hole, and the double sealing design of the elastic sealing ring 3 and the compression pad, this utility model achieves rapid installation and disassembly of the valve seat module 2 while ensuring the reliability of the sealing effect. The design of the reinforcing ribs further enhances the overall strength and pressure resistance of the valve body 1, enabling it to operate stably for a long time under complex working conditions. Those skilled in the art can fully implement the technical solution of this utility model based on the above description.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-change valve seat assembly, comprising: The valve body (1) and valve seat module (2) are characterized in that: the valve body (1) is provided with an installation cavity, the inner wall of the installation cavity is provided with an annular groove, the annular groove is embedded with an elastic sealing ring (3), and the valve seat module (2) is installed in the installation cavity through the elastic sealing ring (3) cooperating with the annular groove; the valve seat module (2) includes a valve seat body, a positioning block (10) and a locking mechanism, the outer periphery of the valve seat body is provided with a positioning groove, the positioning groove is used in cooperation with the positioning block (10), the positioning block (10) is fixedly connected to the inner wall of the installation cavity, and is used to radially limit the valve seat module (2); the locking mechanism includes a locking ring (4) and a driving assembly, the locking ring (4) is sleeved on the outer periphery of the valve seat body and threadedly connected to the inner wall of the installation cavity, and the driving assembly is used to drive the locking ring (4) to move axially, thereby pressing the valve seat module (2) in the installation cavity.

2. The quick-replaceable valve seat assembly according to claim 1, characterized in that: The drive assembly includes a drive gear (5) and a transmission rod (6). The drive gear (5) is fixedly connected to the outer periphery of the locking ring (4). One end of the transmission rod (6) is provided with a rack, which meshes with the drive gear (5). The other end of the transmission rod (6) extends to the outside of the valve body (1) and is provided with a knob (7).

3. The quick-replaceable valve seat assembly according to claim 1, characterized in that: The bottom of the valve seat body is provided with a guide post (8), and the bottom of the mounting cavity is provided with a guide hole. The guide post (8) is used in conjunction with the guide hole.

4. The quick-replaceable valve seat assembly according to claim 1, characterized in that: The number of positioning blocks (10) is multiple, and the multiple positioning blocks (10) are evenly distributed along the inner wall of the mounting cavity. Each positioning block (10) has an inclined surface on its top, and the inclined surface is inclined toward the mounting direction of the valve seat body.

5. A quick-replaceable valve seat assembly according to claim 1, characterized in that: The inner wall of the locking ring (4) is provided with a pressure pad, which is made of elastic material.

6. The quick-replaceable valve seat assembly according to claim 1, characterized in that: The valve body (1) is provided with a cover plate on the top. The cover plate is fixedly connected to the valve body (1) by bolts. A through hole is provided at the center of the cover plate. The through hole is used to accommodate the transmission rod (6) of the drive assembly. A sealing gasket is provided at the bottom of the cover plate. The sealing gasket is in contact with the top of the valve seat body.

7. A quick-replaceable valve seat assembly according to claim 1, characterized in that: The bottom of the valve body (1) is provided with a drain hole, which is connected to the mounting cavity, and a sealing plug is provided on the drain hole.

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