Spherical offset type leakproof clock valve cooperatively matched with external force

Abstract

The utility model discloses a spherical offset leakproof bell valve cooperated by external force, which relates to the technical field of valve sealing, and comprises a lower box body and an upper box body, the top of the upper box body is provided with a valve port, the valve port is connected with a sealing part, the upper box body is rotatably connected with a main shaft, the main shaft is connected with an inner lever, and the inner lever is connected with a valve plate assembly; the anti-disengaging assembly is arranged outside the upper box body and connected with the part, extending out of the upper box body, of the main shaft, and the anti-disengaging assembly can clamp the main shaft and prevent the main shaft from rotating in the direction of opening the valve plate assembly; and the jacking assembly is arranged on the side wall, away from the main shaft, of the upper box body, and can stretch and retract in the radial direction of the upper box body to act on the outer wall slope of the valve plate assembly, so that the cantilever part of the valve plate assembly is pressed on the sealing component under the action of the jacking assembly. Through the synergistic effect of the anti-falling assembly and the jacking assembly, it is ensured that the valve plate assembly can be tightly attached to a sealing component after being closed.

Description

Technical Field

[0001] This utility model relates to the field of valve sealing technology, and more specifically to a spherical offset anti-leakage bell valve with external force cooperation. Background Technology

[0002] Spherical offset anti-leakage bell valves, as an important type of valve equipment, play a crucial role in industrial pipeline systems. Traditional spherical offset anti-leakage bell valves mainly consist of a lower housing, an upper housing, a main shaft, a rocker arm, a pressure rod, valve body sealing components, and a valve core automatic adjustment component. Through the cooperation between the central shaft of the valve core automatic adjustment component and the pressure rod, as well as the elastic action of the compression spring, automatic sealing positioning and sealing force compensation are achieved, thereby ensuring the valve's sealing performance to a certain extent, reducing production costs, and decreasing energy consumption.

[0003] However, in practical applications, traditional spherical offset anti-leakage bell valves still have some shortcomings. When the valve is closed, factors such as pressure fluctuations, temperature changes, and mechanical vibrations in the pipeline can disrupt its stability, altering the sealing contact between the valve core and the sealing ring, thus affecting the valve's sealing performance and potentially leading to leakage. Furthermore, under high-pressure, high-flow conditions, the stability requirements after valve closure are even higher, and valves with traditional structures may struggle to meet the stable operation demands under these stringent conditions.

[0004] To further improve the stability of the spherical offset anti-leakage bell valve after closure, ensure that the valve maintains good sealing performance under various complex working conditions, extend the service life of the valve, and reduce maintenance costs, it is necessary to improve the existing technology and add auxiliary structures to enhance the stability of the valve. Utility Model Content

[0005] In view of this, the present invention provides a spherical offset anti-leakage bell valve with external force cooperation, which aims to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A spherical offset leak-proof bell valve with external force coordination includes a lower housing and an upper housing. The top of the upper housing has a valve port, and a sealing component is connected to the valve port. A main shaft is rotatably connected to the upper housing, and an inner lever is connected to the main shaft. The inner lever is connected to a valve plate assembly, and the valve plate assembly can achieve a sealing closure with the sealing component under the rotational drive of the main shaft. The valve plate assembly also includes:

[0008] An anti-detachment component is provided outside the upper housing and connected to the portion of the main shaft extending out of the upper housing. The anti-detachment component can lock the main shaft and prevent the main shaft from rotating in the direction of opening the valve plate assembly.

[0009] A clamping assembly is provided on the side wall of the upper housing away from the main shaft and can extend and retract along the radial direction of the upper housing. When the clamping assembly extends, it acts on the inclined surface of the outer wall of the valve plate assembly, so that the cantilever part of the valve plate assembly is pressed against the sealing member under the action of the clamping assembly.

[0010] Through the above technical solution, this utility model proposes a spherical offset anti-leakage bell valve with external force cooperation, including an anti-disengagement component and a clamping component. The anti-disengagement component can lock the main shaft to prevent it from rotating in the direction of opening the valve plate assembly, while the clamping component can act on the inclined surface of the outer wall of the valve plate assembly, pressing its cantilever portion against the sealing component. Through the synergistic action of the anti-disengagement component and the clamping component, it is ensured that the valve plate assembly can tightly fit the sealing component after closing, preventing the valve plate assembly from loosening due to factors such as pressure fluctuations, temperature changes, or mechanical vibrations in the pipeline, thereby significantly improving the valve's sealing performance and effectively preventing leakage. The anti-disengagement component restricts the reverse rotation of the main shaft, and the clamping component further presses the valve plate assembly, enabling the valve to maintain stable operation under complex conditions such as high pressure and high flow, extending the valve's service life and reducing maintenance costs.

[0011] Preferably, in the aforementioned spherical offset anti-leakage bell valve with external force coordination, the upper housing has a main shaft mounting seat on its exterior. The main shaft is rotatably connected within the main shaft mounting seat, and the portion of the main shaft penetrating the upper housing is connected to the end of the inner lever via a spline. The end of the main shaft exposed in the upper housing is connected to an outer lever, and a drive mechanism for rotating the outer lever is mounted on the upper housing. By driving the outer lever through the drive mechanism (such as a cylinder), the automatic opening and closing of the valve plate assembly is achieved, simplifying the operation process and improving work efficiency. The spline connection between the main shaft and the inner lever effectively transmits power, reduces energy loss during transmission, and improves the valve's response speed and operating accuracy.

[0012] Preferably, in the aforementioned spherical offset leak-proof bell valve with external force coordination, the driving mechanism includes a first bracket fixed to the outer wall of the upper housing, a first cylinder fixed on the first bracket, and the piston rod of the first cylinder hinged to the end of the outer lever. Using a cylinder as the driving element results in a simple and compact structure, facilitating installation and maintenance, while providing stable driving force. The stroke and thrust of the cylinder can be precisely adjusted via control signals, thereby achieving precise control of the opening and closing position of the valve plate assembly and improving the reliability of the valve.

[0013] Preferably, in the aforementioned spherical offset anti-leakage bell valve with external force cooperation, the anti-disengagement component includes a ratchet and a pawl. The ratchet is fixedly sleeved on the shaft of the main shaft exposed outside the upper housing. The pawl is rotatably connected to the main shaft mounting seat, and the pawl abuts against the ratchet. When the main shaft rotates in the direction of opening the valve plate assembly, the pawl locks the ratchet. The structure of the ratchet and pawl can reliably lock the main shaft, preventing it from rotating in the opposite direction, ensuring that the valve plate assembly will not loosen due to unexpected factors after closing, thus improving the safety of the valve. The design of the ratchet and pawl is simple, easy to implement, and low in cost, making it suitable for mass production and application.

[0014] Preferably, in the aforementioned spherical offset anti-leakage bell valve with external force coordination, the tightening assembly includes a push rod that is slidably connected to the side wall of the upper housing. The end of the push rod located inside the upper housing has a telescopic head, and a spring is sleeved on the push rod. The spring presses against the telescopic head and the inner wall of the upper housing. A second bracket is fixed to the outer wall of the upper housing, and a second cylinder is mounted on the second bracket. The piston rod of the second cylinder is fixedly connected to the end of the push rod away from the telescopic head. The telescopic head of the push rod engages with the inclined surface of the outer wall of the valve plate assembly. Through the elastic force of the spring and the thrust of the cylinder, the valve plate assembly can be further tightened, improving the sealing performance. The spring design allows the push rod to have a certain operating stroke to prevent hard damage, improving the automation level of the valve.

[0015] Preferably, in the aforementioned spherical offset anti-leakage bell valve with external force cooperation, the telescopic head has a wedge-shaped inclined surface that mates with the outer wall inclined surface of the valve plate assembly. The wedge-shaped inclined surface design allows for better contact with the outer wall inclined surface of the valve plate assembly, increasing the contact area and further improving the sealing effect. This structure can adapt to valve plate assemblies of different shapes and sizes, improving the valve's versatility and adaptability.

[0016] Preferably, in the aforementioned spherical offset anti-leakage bell valve with external force cooperation, the push rod has a radially protruding limiting ring on its body located outside the upper housing. This limiting ring abuts against the outer wall of the upper housing for positioning. The limiting ring restricts the extension and retraction range of the push rod, preventing damage due to excessive extension and retraction, thus improving the valve's reliability and service life. The limiting ring design increases the stability between the push rod and the upper housing, reducing structural loosening caused by vibration and other factors.

[0017] Preferably, in the aforementioned spherical offset anti-leakage bell valve with external force cooperation, the sealing component includes an upper gasket and a lower gasket fastened to the valve port by screws. A sealing ring is clamped between the upper and lower gaskets, and the sealing ring is used for sealing engagement with the valve plate assembly. The design of the upper and lower gaskets clamping the sealing ring provides double sealing protection, further improving sealing reliability. The wedge-shaped bevel of the sealing ring engages with the valve plate assembly, better adapting to the shape of the sealing surface and improving the sealing effect.

[0018] Preferably, in the aforementioned spherical offset anti-leakage bell valve with external force cooperation, the sealing ring and the sealing surface of the valve plate assembly form a wedge-shaped inclined surface that cooperates with each other. The wedge-shaped inclined surface can better adapt to the shape of the sealing surface, reduce the sealing gap, and further improve the sealing performance. This structure can better adapt to complex working conditions such as high pressure and high flow, ensuring that the valve maintains good sealing performance under various conditions.

[0019] Preferably, in the aforementioned spherical offset anti-leakage bell valve with external force coordination, the valve plate assembly includes a valve plate and a valve plate connecting post. The valve plate connecting post is inserted into the inner lever and secured with a pin. This connection method of the valve plate assembly facilitates disassembly and installation, makes maintenance and replacement convenient, and reduces maintenance costs. The insertion and pin securing design ensures the connection stability between the valve plate assembly and the inner lever, improving the overall performance of the valve.

[0020] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a spherical offset anti-leakage bell valve with external force cooperation, which has the following beneficial effects:

[0021] 1. Significantly Improved Sealing Performance: Anti-disengagement components (ratchet and pawl) prevent reverse rotation of the main shaft. Combined with a tightening assembly (push rod, telescopic head, and spring) applying additional clamping force to the valve plate assembly, and sealing components (the sealing ring engaging with the wedge-shaped bevel of the valve plate assembly), the valve's sealing performance is ensured from multiple angles, effectively preventing leakage. Even under complex operating conditions such as fluctuations in pipeline medium pressure, temperature changes, or mechanical vibration, it maintains a stable sealing effect, making it particularly suitable for high-pressure, high-flow industrial environments.

[0022] 2. Enhanced Valve Stability: The main shaft is connected to the internal lever via a spline, ensuring stable and efficient power transmission. Simultaneously, the synergistic effect of the anti-detachment and clamping components further enhances the valve's stability in the closed state, preventing loosening of the valve plate assembly due to unexpected factors. Optimized structural design reduces mechanical wear caused by vibration or pressure fluctuations, thereby extending the valve's service life and reducing maintenance frequency and costs.

[0023] 3. Improved ease of operation: The valve plate assembly is automatically opened and closed using a cylinder-driven external lever, simplifying the operation process and improving work efficiency. Simultaneously, the cylinder's stroke and thrust are adjustable, enabling precise control of the valve's opening and closing position. The valve plate assembly uses a plug-in and pin-fastening method, facilitating disassembly and installation, and simplifying maintenance and component replacement, further reducing maintenance costs.

[0024] 4. Compact and Reliable Structure: The overall structure is compact, with a rational layout of components, facilitating installation and integration into existing industrial piping systems. The use of limit rings and springs enhances the valve's structural stability and reliability, reducing the risk of damage due to accidental operation or mechanical failure.

[0025] 5. High versatility and adaptability: The valve's design can adapt to valve plate assemblies of different shapes and sizes, exhibiting high versatility and suitability for various industrial applications. The wedge-shaped bevel design optimizes the sealing contact, improving the valve's adaptability to different operating conditions and further enhancing its market competitiveness.

[0026] 6. Significant Economic Benefits: By improving valve stability and service life, the frequency of maintenance and replacement is reduced, thereby lowering long-term operating costs. Automated operation and rapid maintenance design improve production efficiency and reduce downtime caused by valve failure, bringing significant economic benefits to enterprises. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 The attached figure is a front view of the internal structure of the spherical offset anti-leakage bell valve with external force coordination provided by this utility model;

[0029] Figure 2 The attached figure shows the invention provided by this utility model. Figure 1 A magnified view of part A in the middle;

[0030] Figure 3 The attached figure shows the invention provided by this utility model. Figure 1 A magnified view of part B in the middle;

[0031] Figure 4 The attached figure shows the invention provided by this utility model. Figure 1 A schematic diagram of the local B switching state;

[0032] Figure 5The attached figure is a side view of the structure of the spherical offset anti-leakage bell valve with external force coordination provided by this utility model;

[0033] Figure 6 The attached figure shows the invention provided by this utility model. Figure 5 A magnified view of part C in the middle;

[0034] Figure 7 The attached figure is a schematic diagram of the anti-detachment component provided by this utility model.

[0035] in:

[0036] 1-Lower box;

[0037] 2-Upper box;

[0038] 21-Valve port; 22-Spindle; 23-Inner lever; 24-Spindle mounting base; 25-Outer lever;

[0039] 3-Sealing components;

[0040] 31-Screw; 32-Upper washer; 33-Lower washer; 34-Sealing ring;

[0041] 4-Valve plate assembly;

[0042] 41-Valve plate; 42-Valve plate connecting post; 43-Pin;

[0043] 5-Anti-detachment components;

[0044] 51-Ratchet; 52-Pawl;

[0045] 6-Tightening assembly;

[0046] 61-Push rod; 611-Limit ring; 62-Telescopic head; 63-Spring; 64-Second bracket; 65-Second cylinder;

[0047] 7-Drive mechanism;

[0048] 71-First support; 72-First cylinder. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] See appendix Figure 1 and attached Figure 5This utility model discloses a spherical offset anti-leakage bell valve with external force cooperation, including a lower housing 1 and an upper housing 2. The top of the upper housing 2 has a valve port 21, and a sealing component 3 is connected to the valve port 21. A main shaft 22 is rotatably connected to the upper housing 2, and an inner lever 23 is connected to the main shaft 22. The inner lever 23 is connected to a valve plate assembly 4. The valve plate assembly 4 can achieve sealing closure with the sealing component 3 under the rotation drive of the main shaft 22; it also includes:

[0051] Anti-detachment component 5 is located outside the upper housing 2 and is connected to the part of the main shaft 22 that extends out of the upper housing 2. Anti-detachment component 5 can lock the main shaft 22 and prevent the main shaft 22 from rotating in the direction of opening valve plate assembly 4.

[0052] The clamping component 6 is located on the side wall of the upper housing 2 away from the main shaft 22 and can extend and retract along the radial direction of the upper housing 2. When the clamping component 6 extends, it acts on the inclined surface of the outer wall of the valve plate assembly 4, so that the cantilever part of the valve plate assembly 4 is pressed against the sealing component 3 under the action of the clamping component 6.

[0053] To further optimize the above technical solution, the upper housing 2 has a main shaft mounting seat 24 on its exterior. The main shaft 22 is rotatably connected inside the main shaft mounting seat 24, and the part of the main shaft 22 that passes through the upper housing 2 is connected to the end of the inner lever 23 via a spline. The end of the main shaft 22 that is exposed outside the upper housing 2 is connected to an outer lever 25. A drive mechanism 7 for driving the outer lever 25 to rotate is installed on the upper housing 2.

[0054] To further optimize the above technical solution, the drive mechanism 7 includes a first bracket 71 fixed on the outer wall of the upper housing 2, a first cylinder 72 fixed on the first bracket 71, and the piston rod of the first cylinder 72 hinged to the end of the outer lever 25.

[0055] See appendix Figure 6 and attached Figure 7 The anti-detachment component 5 includes a ratchet 51 and a pawl 52. The ratchet 51 is fixedly sleeved on the shaft of the main shaft 22 exposed outside the upper housing 2. The pawl 52 is rotatably connected to the main shaft mounting seat 24 and abuts against the ratchet 51. When the main shaft 22 rotates in the direction of opening the valve plate assembly 4, the pawl 52 jams the ratchet 51.

[0056] See appendix Figure 3 and attached Figure 4The clamping assembly 6 includes a push rod 61 that is slidably connected to the side wall of the upper housing 2. The end of the push rod 61 located inside the upper housing 2 has a telescopic head 62. A spring 63 is sleeved on the push rod 61. The spring 63 is pressed against the telescopic head 62 and the inner wall of the upper housing 2. A second bracket 64 is fixed on the outer wall of the upper housing 2. A second cylinder 65 is installed on the second bracket 64. The piston rod of the second cylinder 65 is fixedly connected to the end of the push rod 61 away from the telescopic head 62.

[0057] To further optimize the above technical solution, the telescopic head 62 has a wedge-shaped inclined surface that matches the outer wall inclined surface of the valve plate assembly 4.

[0058] To further optimize the above technical solution, the push rod 61 has a radially protruding limiting ring 611 on the rod body outside the upper housing 2. The limiting ring 611 is used to abut against and limit the movement of the upper housing 2.

[0059] See appendix Figure 2 The sealing component 3 includes an upper pad 32 and a lower pad 33 fastened to the valve port 21 by screws 31. A sealing ring 34 is clamped between the upper pad 32 and the lower pad 33. The sealing ring 34 is used to seal with the valve plate assembly 4.

[0060] To further optimize the above technical solution, the sealing ring 34 and the sealing surface of the valve plate assembly 4 form a wedge-shaped inclined surface that cooperates with each other.

[0061] To further optimize the above technical solution, the valve plate assembly 4 includes a valve plate 41 and a valve plate connecting post 42. The valve plate connecting post 42 is inserted into the inner lever 23 and fastened by a pin 43.

[0062] When using the spherical offset anti-leakage bell valve with external force coordination provided in this embodiment:

[0063] Driven by the first cylinder 72, the outer lever 25 rotates, which in turn lifts the inner lever 23, causing the valve plate assembly 4 to close. During this process, the rotation of the main shaft 22 does not interfere with the pawl 52. Once the valve plate assembly 4 is closed, the pawl 52 will lock the ratchet 51, preventing the main shaft 22 from reversing. After the valve plate assembly 4 is closed, the second cylinder 65 drives the push rod 61 to move, causing the telescopic head 62 to engage with the inclined surface of the outer wall of the valve plate assembly 4, pressing the valve plate 41 tightly. Since the main shaft 22 is installed on one side of the upper housing 2, the connection structure of the inner lever 23 forms a cantilever structure on the side of the valve plate 41 away from the main shaft 22. The pressing of the push rod 61 can prevent the sealing problem caused by the cantilever structure, resulting in a better sealing effect.

[0064] When it is necessary to open the valve plate assembly 4, control the second cylinder 65 to retract and manually lift the pawl 52 to complete the unlocking. Then control the first cylinder 72 to open the valve plate assembly 4.

[0065] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0066] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A spherical offset anti-leakage bell valve with external force cooperation, comprising a lower housing (1) and an upper housing (2), wherein the top of the upper housing (2) has a valve port (21), a sealing component (3) is connected to the valve port (21), a main shaft (22) is rotatably connected to the upper housing (2), an inner lever (23) is connected to the main shaft (22), a valve plate assembly (4) is connected to the inner lever (23), and the valve plate assembly (4) can achieve sealing closure with the sealing component (3) under the rotation drive of the main shaft (22); characterized in that, Also includes: Anti-detachment component (5), the anti-detachment component (5) is located outside the upper housing (2) and is connected to the part of the main shaft (22) extending out of the upper housing (2). The anti-detachment component (5) can lock the main shaft (22) and prevent the main shaft (22) from rotating in the direction of opening the valve plate assembly (4). The clamping assembly (6) is located on the side wall of the upper housing (2) away from the main shaft (22) and can extend and retract along the radial direction of the upper housing (2). When the clamping assembly (6) extends, it acts on the inclined surface of the outer wall of the valve plate assembly (4), so that the cantilever part of the valve plate assembly (4) is pressed against the sealing member (3) under the action of the clamping assembly (6).

2. The spherical offset anti-leakage bell valve with external force cooperation according to claim 1, characterized in that, The upper housing (2) has a spindle mounting base (24) on its exterior. The spindle (22) is rotatably connected to the spindle mounting base (24), and the part of the spindle (22) that passes through the upper housing (2) is connected to the end of the inner lever (23) via a spline. The end of the spindle (22) that is exposed outside the upper housing (2) is connected to an outer lever (25). A drive mechanism (7) for driving the outer lever (25) to rotate is installed on the upper housing (2).

3. The spherical offset anti-leakage bell valve with external force cooperation according to claim 2, characterized in that, The drive mechanism (7) includes a first bracket (71) fixed on the outer wall of the upper housing (2), a first cylinder (72) fixed on the first bracket (71), and the piston rod of the first cylinder (72) is hinged to the end of the outer lever (25).

4. The spherical offset anti-leakage bell valve with external force cooperation according to claim 2, characterized in that, The anti-detachment component (5) includes a ratchet (51) and a pawl (52). The ratchet (51) is fixedly sleeved on the shaft of the main shaft (22) exposed outside the upper housing (2). The pawl (52) is rotatably connected to the main shaft mounting base (24), and the pawl (52) abuts against the ratchet (51). When the main shaft (22) rotates in the direction of opening the valve plate assembly (4), the pawl (52) locks the ratchet (51).

5. The spherical offset anti-leakage bell valve with external force cooperation according to claim 1, characterized in that, The clamping assembly (6) includes a push rod (61) that is slidably connected to the side wall of the upper housing (2). The end of the push rod (61) located inside the upper housing (2) has a telescopic head (62). A spring (63) is sleeved on the push rod (61). The spring (63) presses against the telescopic head (62) and the inner wall of the upper housing (2). A second bracket (64) is fixed on the outer wall of the upper housing (2). A second cylinder (65) is installed on the second bracket (64). The piston rod of the second cylinder (65) is fixedly connected to the end of the push rod (61) away from the telescopic head (62).

6. The spherical offset anti-leakage bell valve with external force cooperation according to claim 5, characterized in that, The telescopic head (62) has a wedge-shaped bevel that engages with the outer wall bevel of the valve plate assembly (4).

7. A spherical offset anti-leakage bell valve with external force cooperation according to claim 5, characterized in that, The push rod (61) has a radially protruding limiting ring (611) on the rod body outside the upper box (2), and the limiting ring (611) is used to abut against the outer wall of the upper box (2) for limiting.

8. The spherical offset anti-leakage bell valve with external force cooperation according to claim 1, characterized in that, The sealing component (3) includes an upper pad (32) and a lower pad (33) fastened to the valve port (21) by screws (31), and a sealing ring (34) is clamped between the upper pad (32) and the lower pad (33) for sealing engagement with the valve plate assembly (4).

9. The spherical offset anti-leakage bell valve with external force cooperation according to claim 1, characterized in that, The sealing ring (34) and the sealing surface of the valve plate assembly (4) form a wedge-shaped inclined surface that cooperates with each other.

10. A spherical offset anti-leakage bell valve with external force cooperation according to claim 1, characterized in that, The valve plate assembly (4) includes a valve plate (41) and a valve plate connecting post (42), the valve plate connecting post (42) being inserted into the inner lever (23) and fastened by a pin (43).

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