Olive-shaped single-weld-seam all-welded ball valve

Abstract

An olive-shaped single-welding-seam all-welded ball valve comprises a valve body, a valve seat box, a valve seat, a medium flow channel, a valve rod and a valve element which is connected with the valve rod and used for controlling the medium flow channel to be opened and closed, the cross section of the valve body is in an olive shape, and the wall thickness of the valve body is increased. The olive-shaped design is combined with the thickened wall thickness, so that the structural strength of the valve body is greatly enhanced, the valve body can bear higher internal pressure, the valve is suitable for the working environment of high-pressure fluid, and safe operation of the valve under extreme conditions is ensured. The thickened wall thickness can effectively prevent plastic deformation of the valve body under high pressure, temperature change and mechanical impact, the durability of the valve is enhanced, and the service life of equipment is prolonged. Vibration caused by fluid flowing is effectively absorbed, noise of the valve in the operation process is reduced, it is ensured that a system is quieter during operation, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to an olive-shaped single-weld fully welded ball valve, belonging to the field of valves. Background Art

[0002] In the field of fluid control, ball valves, as an important fluid control equipment, are widely used in various industrial systems, water conservancy projects and civil facilities. However, with the continuous development of industrial technology and the increasing demand for application, the traditional spherical ball valve design has gradually revealed its limitations:

[0003] The wall thickness at the intersection of the spherical shell and the barrel-shaped channel is weak, and the strength after processing is poor; the arc connecting the valve body and the medium channel is located on the periphery of the valve seat box, and the stress release of the shell after processing may cause large fluctuations in the form and position tolerances; the wall thickness of the valve seat box of the spherical shell is relatively weak, and it is easy to cause local deformation of the valve seat box after welding the lifting lugs; the spherical shell intersects with the barrel-shaped channel, and the arc of the transition is small, which makes it easy to demold, and the mold life is short; the hole on the valve stem surface is used to install anti-static steel balls, and the sharp angle of the hole may scratch the O-ring; the inner and outer diameters of the sliding sleeve are smooth, and there is no fulcrum for disassembly, making disassembly difficult; the hole used for connection of the valve core is not through to the medium channel, and the heat generated by the shell welding is accumulated in the middle cavity, and the heat dissipation effect of the valve is poor; the valve body is welded to the base, making it difficult to disassemble the base. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide an olive-shaped single-weld fully welded ball valve.

[0005] The olive-shaped single-weld fully welded ball valve includes a valve body, a valve seat box, a valve seat, a medium flow channel, a valve stem, and a valve core connected to the valve stem for controlling the flow of the medium. The cross-sectional shape of the valve body is olive-shaped, and the wall thickness of the valve body is thickened. The olive-shaped design combined with the thickened wall thickness greatly enhances the structural strength of the valve body, enabling it to withstand higher internal pressures, making it suitable for working environments with high-pressure fluids and ensuring the safe operation of the valve under extreme conditions. The thickened wall thickness can effectively prevent plastic deformation of the valve body under high pressure, temperature changes, and mechanical shocks, thereby enhancing the durability of the valve and extending the service life of the equipment. It effectively absorbs vibrations caused by fluid flow, reduces the noise of the valve during operation, ensures that the system is quieter during operation, and improves the user experience.

[0006] Preferably, the valve stem outer sleeve is provided with a sealing sleeve located above the valve core, and a number of slots are evenly distributed on the inner and outer walls of the sealing sleeve. A through hole is provided in the slot that passes through the sealing sleeve transversely. The through hole on one side is used to form a grease injection channel, and the through hole on the other side is provided with a first spring, and steel balls are installed at both ends of the first spring. Through the cooperation of the steel ball and the first spring, the electric charge generated by the friction between the valve stem and the O-ring is transmitted to the valve body nearby, avoiding the fire hazard caused by the electric charge. The design of the grease injection channel allows lubrication during the use of the valve, which is convenient for users to regularly inject grease into the inside of the sealing sleeve, thereby reducing wear and friction, making the movement of the valve stem smoother and increasing the service life. The installed spring and steel ball realize the function of directly connecting the valve stem and the valve body.

[0007] Furthermore, the valve stem outer sleeve is provided with a sliding sleeve positioned between the sealing sleeve and the valve core, and symmetrical disassembly holes are provided in the center of each side of the sliding sleeve. These symmetrical disassembly holes provide convenient disassembly points, making it easier for users to maintain, inspect, or replace the sliding sleeves, shortening maintenance time and reducing maintenance costs. The combination of the sliding sleeve and the sealing sleeve further enhances the valve's sealing performance, ensuring the safe transmission of media within the valve, preventing leakage, and improving the safety and stability of the system.

[0008] Furthermore, the shape of the disassembly hole is small inside and large outside. The trumpet-shaped disassembly hole facilitates the hooking and application of the caliper tool, thereby reducing the difficulty of disassembly.

[0009] Preferably, the upper end of the valve core is provided with a first connecting groove, through which the upper end of the valve core is rotatably connected to the valve stem; the lower end of the valve core is provided with a second connecting groove, and the bottom of the valve body is provided with a connecting shaft arranged concentrically with the valve stem, through which the lower end of the valve core is rotatably connected to the connecting shaft. This connection method allows the valve core to be directly connected to the valve stem and the connecting shaft, simplifying the structural design of the valve and reducing the required moving parts and connectors, thereby reducing manufacturing costs and assembly difficulty.

[0010] Furthermore, the bottoms of the first and second connecting grooves are respectively provided with first and second vent holes that communicate with the medium flow channel. Air can be taken in through one vent hole and exhausted through the other, using the airflow to reduce the temperature of the valve body cavity. The provision of the first and second vent holes allows for a more effective fluid connection between the valve core and the medium flow channel during opening and closing, optimizing fluid flow characteristics, reducing flow resistance, and improving flow efficiency.

[0011] Preferably, the connection between the valve body and the medium flow channel is shaped like an arc, located on the side away from the valve seat. This arc, being away from the valve seat, minimizes the impact of stress release on the valve seat. The olive-shaped valve body provides a smoother transition between the valve body and the medium flow channel, allowing for a larger arc within the same space, facilitating demolding and extending mold life.

[0012] Preferably, the wall thickness of the valve body corresponding to the valve seat is greater than the thickness on both sides of the valve seat. The welding lug has little impact on the valve seat box.

[0013] Preferably, the valve stem is further sheathed with an upper support seat located outside the sealing sleeve. A mounting slot is provided on one side of the valve stem, within which a second spring is positioned. An anti-static steel ball is mounted on the end of the second spring, abutting against the upper support seat. The anti-static steel ball effectively acts as a buffer, reducing frictional wear between the valve stem and the upper support seat and preventing scratches caused by sudden impacts or pressure changes, thereby extending the service life of the component.

[0014] Furthermore, the bottom of the upper support seat extends into the valve body, and the anti-static steel ball abuts against the inner wall of the bottom of the upper support seat, which is not easy to scratch the O-ring and ensures the sealing effect.

[0015] The beneficial effects of this utility model are as follows: The olive-shaped design combined with thickened walls significantly enhances the structural strength of the valve body, enabling it to withstand higher internal pressures, making it suitable for working environments with high-pressure fluids and ensuring safe operation of the valve under extreme conditions. The thickened walls effectively prevent plastic deformation of the valve body under high pressure, temperature fluctuations, and mechanical shock, enhancing the durability of the valve and extending the service life of the equipment. It effectively absorbs vibration caused by fluid flow, reducing noise during valve operation, ensuring a quieter system operation and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still fall within the scope of the present invention.

[0017] Figure 1 This is the main structure diagram of the utility model;

[0018] Figure 2 for Figure 1 A magnified view of the details at center A;

[0019] Figure 3 for Figure 1 A magnified view of the detail at point B in the middle;

[0020] In the figure, 1. valve body; 11. medium flow channel; 2. valve seat box; 21. valve seat; 3. valve stem; 31. sealing sleeve; 32. slot; 33. through hole; 34. grease injection channel; 35. first spring; 36. steel ball; 4. sliding sleeve; 41. disassembly hole; 37. installation slot; 38. second spring; 39. anti-static steel ball; 5. valve core; 51. first connecting slot; 52. first vent hole; 53. second connecting slot; 54. second vent hole; 6. connecting shaft; 7. upper support seat. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0022] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.

[0023] The directional and positional terms used in this invention, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are used solely to refer to the directions or positions in the accompanying drawings. Therefore, the directional and positional terms used are intended to illustrate and facilitate understanding of this invention and are not intended to limit the scope of protection of this invention.

[0024] like Figure 1-3 The figure shows an embodiment of the olive-shaped single-weld fully welded ball valve of the utility model, comprising a valve body 1, a valve seat box 2, a valve seat 21, a medium flow channel 11, a valve stem 3 and a valve core 5 connected to the valve stem 3 for controlling the on-off of the medium flow channel 11. The cross-sectional shape of the valve body 1 is olive-shaped, and the wall thickness of the valve body 1 is thickened. The olive-shaped design combined with the thickened wall thickness greatly enhances the structural strength of the valve body 1, enabling it to withstand higher internal pressures, making it suitable for working environments with high-pressure fluids and ensuring the safe operation of the valve under extreme conditions. The thickened wall thickness can effectively prevent the valve body 1 from plastic deformation under high pressure, temperature changes and mechanical shocks, thereby enhancing the durability of the valve and extending the service life of the equipment. It effectively absorbs vibrations caused by fluid flow, reduces the noise of the valve during operation, ensures that the system is quieter during operation, and improves the user experience.

[0025] The valve stem 3 is fitted with a sealing sleeve 31 positioned above the valve core 5. Several slots 32 are evenly distributed on the inner and outer walls of the sealing sleeve 31. Each slot 32 includes a through-hole 33 extending transversely through the sealing sleeve 31. The through-hole 33 on one side forms a grease injection channel 34. A first spring 35 is provided within the through-hole 33 on the other side. Steel balls 36 are mounted at each end of the first spring 35. The coordination of the steel balls 36 and the first spring 35 allows the electrical charge generated by friction between the valve stem and the O-ring to be transferred to the valve body, thereby avoiding fire hazards caused by the electrical charge. The design of the grease injection channel 34 allows for lubrication during valve operation, making it convenient for users to regularly inject grease into the sealing sleeve 31. This reduces wear and friction, making the movement of the valve stem 3 smoother and increasing its service life. The installed spring and steel balls 36 provide direct electrical connection between the valve stem 3 and the valve body 1.

[0026] An O-ring is installed in the remaining groove 32 for sealing.

[0027] The valve stem 3 is fitted with a sliding sleeve 4 positioned between the sealing sleeve 31 and the valve core 5. Disassembly holes 41 are symmetrically defined in the center of each side of the sliding sleeve 4. These symmetrical disassembly holes 41 provide convenient disassembly points, making maintenance, inspection, or replacement of the sliding sleeve 4 easier for the user, shortening maintenance time and reducing maintenance costs. The combination of the sliding sleeve 4 and the sealing sleeve 31 further enhances the valve's sealing performance, ensuring safe transmission of media within the valve, preventing leakage, and improving system safety and stability.

[0028] The shape of the disassembly hole 41 is small inside and large outside. The trumpet-shaped disassembly hole 41 is convenient for the caliper tool to hook and apply force, thereby reducing the difficulty of disassembly.

[0029] The upper end of the valve core 5 is provided with a first connecting groove 51, which is rotatably connected to the valve stem 3 via the first connecting groove 51. The lower end of the valve core 5 is provided with a second connecting groove 53. The bottom of the valve body 1 is provided with a connecting shaft 6 arranged concentrically with the valve stem 3, and the lower end of the valve core 5 is rotatably connected to the connecting shaft 6 via the second connecting groove 53. Through this connection method, the valve core 5 can be directly connected to the valve stem 3 and the connecting shaft 6, simplifying the structural design of the valve and reducing the required moving parts and connecting parts, thereby reducing manufacturing costs and assembly difficulty.

[0030] The bottoms of the first and second connecting grooves 51, 53 are respectively provided with a first vent hole 52 and a second vent hole 54, which communicate with the medium flow channel 11. Air can be taken in through one vent hole and exhausted through the other, using the airflow to lower the temperature of the cavity in the valve body 1. The provision of the first and second vent holes 52, 54 allows for a more effective fluid connection between the valve core 5 and the medium flow channel 11 during opening and closing, optimizing fluid flow characteristics, reducing flow resistance, and improving flow efficiency.

[0031] The connection between the valve body 1 and the medium flow channel 11 is shaped like an arc, located on the side away from the valve seat housing 2. This arc, located away from the valve seat housing 2, minimizes the impact of stress release on the weld of the valve seat 21. The olive-shaped transition between the valve body 1 and the medium flow channel is smoother, and the larger arc within the same space facilitates demolding and prolongs mold life.

[0032] The wall thickness of the valve body 1 corresponding to the valve seat 21 is greater than the thickness on both sides of the valve seat 21. The welding lug has little influence on the welding of the valve seat 21.

[0033] The valve stem 3 is also sheathed with an upper support seat 7 located outside the sealing sleeve 31. A mounting groove 37 is provided on one side of the valve stem 3. A second spring 38 is disposed within the mounting groove 37. An anti-static steel ball 3936 is mounted on the end of the second spring 38, which abuts against the upper support seat 7. The anti-static steel ball 3936 effectively acts as a buffer element, reducing wear caused by friction between the valve stem 3 and the upper support seat 7 and preventing scratches caused by sudden impacts or pressure changes, thereby extending the service life of the components.

[0034] The bottom of the upper support seat 7 extends into the valve body 1, and the anti-static steel ball 3936 abuts against the inner wall of the bottom of the upper support seat 7. It is not easy to scratch the O-ring, ensuring the sealing effect.

[0035] The valve body 1 is threadedly connected to the base, which is convenient for disassembly and replacement, and can compensate for the insufficient height of the support platform.

[0036] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

[0037] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed, and the present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. Olive-shaped single-weld fully welded ball valve, characterized by: It includes a valve body, a valve seat box, a valve seat, a medium flow channel, a valve stem and a valve core connected to the valve stem for controlling the on / off of the medium flow channel. The cross-section of the valve body is olive-shaped and the wall thickness of the valve body is thickened.

2. The olive-shaped single-weld fully welded ball valve according to claim 1, characterized in that: The valve stem outer sleeve is provided with a sealing sleeve located above the valve core, and a number of grooves are distributed on the inner and outer walls of the sealing sleeve. A through hole is provided in the groove and passes through the sealing sleeve horizontally. The through hole on one side is used to form a grease injection channel, and a first spring is provided in the through hole on the other side, and steel balls are respectively installed at both ends of the first spring.

3. The olive-shaped single-weld fully welded ball valve according to claim 2, characterized in that: The valve stem outer sleeve is provided with a sliding shaft sleeve located between the sealing sleeve and the valve core, and disassembly holes are symmetrically opened in the middle of both sides of the sliding shaft sleeve.

4. The olive-shaped single-weld fully welded ball valve according to claim 3, characterized in that: The shape of the disassembly hole is small inside and large outside.

5. The olive-shaped single-weld fully welded ball valve according to claim 1, characterized in that: The upper end of the valve core is provided with a first connecting groove, and the upper end of the valve core is rotatably connected to the valve stem through the first connecting groove. The lower end of the valve core is provided with a second connecting groove, and the bottom of the valve body is provided with a connecting shaft arranged concentrically with the valve stem, and the lower end of the valve core is rotatably connected to the connecting shaft through the second connecting groove.

6. The olive-shaped single-weld fully welded ball valve according to claim 5, characterized in that: A first vent hole and a second vent hole communicating with the medium flow channel are respectively provided at the bottom of the first connecting groove and the second connecting groove.

7. The olive-shaped single-weld fully welded ball valve according to claim 1, characterized in that: The connection between the valve body and the medium flow channel is in the shape of an arc, and the arc is arranged on a side away from the valve seat box.

8. The olive-shaped single-weld fully welded ball valve according to claim 1, characterized in that: The wall thickness of the valve body corresponding to the valve seat is greater than the thickness on both sides of the valve seat.

9. The olive-shaped single-weld fully welded ball valve according to claim 1, characterized in that: The valve stem is also provided with an upper support seat located outside the sealing sleeve. A mounting groove is provided on one side of the valve stem. A second spring is provided in the mounting groove. An anti-static steel ball is installed at the end of the second spring to abut against the upper support seat.

10. The olive-shaped single-weld fully welded ball valve according to claim 9, characterized in that: The bottom of the upper support seat extends into the valve body, and the anti-static steel ball abuts against the inner wall of the bottom of the upper support seat.

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