Method for reducing foreign matter damage caused by rotation of valve element and valve body

Abstract

The invention relates to a method for reducing foreign matter damage caused by rotation of a valve element and a valve body.The method comprises the following steps that sealing structures are rotationally arranged in an inlet and an outlet of a shell of the valve element, and the sealing structures are in sealing fit with the valve element and can freely rotate in the inlet and the outlet; a transmission structure is arranged between the valve element and the sealing structure and can push the sealing structure to rotate when the valve element rotates. According to the technical scheme, when the valve element rotates, the transmission structure drives the sealing structure to rotate in the inlet or the outlet, when the valve element rotates and extrudes sundries, the sealing structure rotates to take the sundries away from the contact face, in other words, the sealing structure unloads force through rotation, support to the sundries is relieved, and the sealing effect is improved. And damage of foreign matters to the sealing structure in the rotating process of the valve element is reduced.

Description

Technical Field

[0001] This invention relates to the field of ball valve sealing structure technology, specifically to a method and valve body for reducing damage from foreign objects during valve core rotation. Background Technology

[0002] A ball valve is a commonly used control valve for water supply pipelines. It has one inlet and at least one outlet. By controlling the rotation of the internal valve core, the inlet and outlet can be connected or closed. The inlet and outlet positions are sealed with the valve core by a sealing ring, which is mostly made of rubber. In environments with little sand, this sealing method can achieve the purpose of long-term use. However, for irrigation water, that is, irrigation water directly drawn from natural water bodies, it cannot be used for a long time. The reason is that the water in natural water bodies contains a lot of sand or other impurities. After the valve is closed, the impurities will accumulate between the valve core and the sealing ring. During the rotation of the valve core, the impurities will be squeezed into the space between the valve core and the sealing ring. After long-term use, the sealing ring is easily damaged. To address this, existing solutions involve using ceramic as a sealing ring. Ceramic, through grinding, forms a smooth surface that mates with the valve core, resulting in a high sealing effect. It also possesses high structural strength, which can reduce damage caused by foreign matter being squeezed out during valve core rotation to some extent. However, if the water source contains high-hardness impurities such as quartz sand, it can also cause some damage to the edge of the sealing ring. Over time, this damage can worsen, leading to a decrease in sealing effectiveness. Therefore, the inventors have proposed a sealing structure that can reduce damage from foreign matter during valve core rotation. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a method and valve body for reducing damage from foreign objects during valve core rotation, so as to solve the problem in the prior art that the sealing ring is easily damaged by foreign objects during valve core rotation when used in natural water environment.

[0004] This invention is achieved through the following technical solution: A method for reducing damage from foreign objects during valve core rotation includes the following steps: rotatably installing a sealing structure within the inlet and outlet positions of the valve core housing, the sealing structure sealingly engaging with the valve core and being able to rotate freely within the inlet and outlet; A transmission structure is provided between the valve core and the sealing structure, which can drive the sealing structure to rotate when the valve core rotates.

[0005] Further specifying, the sealing structure includes an annular frame and a sealing ring, wherein the sealing ring is fixedly installed on the annular frame and is located on the side of the annular frame facing the valve core; The transmission structure is located between the annular frame and the valve core.

[0006] Further specified, the sealing ring is a ceramic sealing ring, with one side embedded in the annular frame and the other side protruding out of the annular frame; The inner wall of the annular frame is provided with at least one limiting groove, and the outer wall of the sealing ring is provided with at least one limiting protrusion, which is inserted into the limiting groove.

[0007] Further specified, the sealing ring is a rubber ring, the annular frame has an annular groove on the side facing the valve core, the sealing ring is installed in the annular groove, and one side protrudes out of the annular groove; The bottom of the annular groove is provided with several limiting holes, and the sealing ring is provided with several limiting blocks that correspond one-to-one with the limiting blocks. The limiting blocks are inserted into the limiting holes.

[0008] Further defining the transmission structure, the transmission structure includes a first gear ring disposed on the outer wall of the annular frame and a second gear ring disposed on the valve core. The second gear ring and the first gear ring mesh with each other, and the planes on which the first gear ring and the second gear ring are located intersect perpendicularly. The second gear ring is coaxially arranged with the rotation axis of the valve core.

[0009] Furthermore, the valve core sidewall is provided with an annular guide groove, and the sealing structure is inserted into the guide groove and seals with the guide groove; The width of the guide groove is equal to the outer diameter of the sealing structure.

[0010] Furthermore, the valve core is spherical, and the bottom surface of the guide groove is spherical; Alternatively, the valve core may be cylindrical, and the bottom surface of the valve core may be arc-shaped.

[0011] A valve body includes the aforementioned sealing structure for reducing damage from foreign objects during valve core rotation. It includes a valve core and a housing for accommodating the valve core. The housing has an inlet and an outlet, and a connecting pipe is connected to both the inlet and the outlet. The sealing structure is rotatably connected to the end of the connecting pipe facing the valve core and is in a sealing fit with the valve core.

[0012] Further specifying, the inner wall of the connecting pipe facing the valve core has a recessed platform, and the sealing structure is rotatably fitted within the recessed platform.

[0013] Furthermore, a self-lubricating sealing gasket is provided between the annular frame and the bottom surface of the sink platform.

[0014] The beneficial effects of this invention are as follows: This invention relates to a method and valve body for reducing damage from foreign objects during valve core rotation. When the valve core rotates, it drives the sealing structure to rotate within the inlet or outlet via a transmission structure. During the rotation, foreign objects squeezed between the valve core and the mating surface of the sealing structure are removed from the contact surface by the rotating sealing structure when the valve core rotates. In other words, the sealing structure relieves the force by rotating, thereby reducing the damage to the sealing structure caused by foreign objects during valve core rotation.

[0015] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0016] Figure 1 This is the front view of the valve body; Figure 2 This is a sectional view of the valve body; Figure 3 This is a schematic diagram of the mating structure of the transmission structure; Figure 4 This is a schematic diagram of the sealed structure; Figure 5 This is a schematic diagram of a split structure in which the sealing ring is a ceramic sealing ring; Figure 6 This is a schematic diagram of a split structure in which the sealing ring is a rubber ring; In the diagram: 1. Valve core; 2. Annular frame; 3. Sealing ring; 4. Limiting protrusion; 5. Limiting groove; 6. Annular groove; 7. Limiting hole; 8. Limiting block; 9. First toothed ring; 10. Second toothed ring; 11. Housing; 12. Connecting pipe; 13. Recessed platform; 14. Self-lubricating sealing gasket. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the above description of the present invention, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0022] Please see Figure 1-6 The present invention provides a technical solution: a method for reducing damage from foreign objects during valve core rotation, comprising the following steps: a sealing structure is rotatably provided in the inlet and outlet positions of the housing 11 of the valve core 1, the sealing structure being sealed and fitted with the valve core 1 and being able to rotate freely in the inlet and outlet; A transmission structure is provided between the valve core 1 and the sealing structure, which can drive the sealing structure to rotate when the valve core 1 rotates.

[0023] The sealing structure is connected to the valve core 1 through a transmission structure. When the valve core 1 rotates, the transmission structure drives the sealing structure to rotate within the inlet or outlet. During the rotation, the debris squeezed between the valve core 1 and the mating surface of the sealing structure is removed from the contact surface by the rotating sealing structure when the valve core 1 rotates and squeezes. That is, the sealing structure relieves the force by rotating, releases the support for the debris, and thus reduces the damage to the sealing structure caused by foreign objects during the rotation of the valve core 1.

[0024] In this embodiment, the sealing structure includes an annular frame 2 and a sealing ring 3. The sealing ring 3 is fixedly installed on the annular frame 2 and is located on the side of the annular frame 2 facing the valve core 1. The transmission structure is located between the annular frame 2 and the valve core 1.

[0025] The annular frame 2 serves as the mounting base for the sealing ring 3. Together, they form a sealing structure to cooperate with the valve core 1 to achieve a sealing effect. The annular frame 2 acts as a force-bearing structure that cooperates with the transmission mechanism, while the sealing ring 3 provides a sealing effect. When the valve core 1 rotates, the annular frame 2 drives the sealing ring 3 to rotate. Among them, such as Figure 5 As shown, the sealing ring 3 is a ceramic sealing ring, with one side embedded in the annular frame 2 and the other side protruding out of the annular frame 2; The inner wall of the annular frame 2 is provided with at least one limiting groove 5, and the outer wall of the sealing ring 3 is provided with at least one limiting protrusion 4, which is inserted into the limiting groove 5.

[0026] The sealing ring 3 is radially limited by the limiting protrusion 4 and the limiting groove 5, so that it can rotate synchronously with the annular frame 2.

[0027] Or, such as Figure 6 As shown, the sealing ring 3 is a rubber ring, and the annular frame 2 has an annular groove 6 on the side facing the valve core 1. The sealing ring 3 is installed in the annular groove 6, and one side protrudes out of the annular groove 6. The bottom of the annular groove 6 is provided with several limiting holes 7, and the sealing ring 3 is provided with several limiting blocks 8 corresponding to several limiting blocks 8 one by one. The limiting blocks 8 are inserted into the limiting holes 7.

[0028] The sealing ring 3 is made of rubber and is radially limited by the cooperation of the limiting block 8 with the limiting block 8; The ring frame 2 can be made of stainless steel, which has high structural strength and can maintain its shape stability during rotation, thereby keeping the sealing ring 3 in shape stable.

[0029] In this embodiment, the transmission structure includes a first gear ring 9 disposed on the outer wall of the annular frame 2 and a second gear ring 10 disposed on the valve core 1. The second gear ring 10 and the first gear ring 9 mesh with each other, and the plane where the first gear ring 9 is located intersects the plane where the second gear ring 10 is located perpendicularly. The second gear ring 10 is coaxially disposed with the rotation axis of the valve core 1.

[0030] When the valve core 1 rotates, it drives the first gear ring 9 to rotate through the second gear ring 10. When the first gear ring 9 rotates, it drives the annular frame 2 to rotate, thereby achieving the effect that the rotation of the valve core 1 drives the entire sealing structure to rotate.

[0031] In this embodiment, the valve core 1 has an annular guide groove on its side wall, and the sealing structure is inserted into the guide groove and seals with the guide groove. The width of the guide groove is equal to the outer diameter of the sealing structure.

[0032] By setting guide grooves, which act as limiting structures on the end face of the sealing structure, the upper and lower sides of the sealing structure are limited, thereby improving the structural stability of the sealing structure. Wherein, if the valve core 1 is spherical, then the bottom surface of the guide groove is a convex spherical surface, and the side of the sealing structure that contacts it is a concave spherical surface. Alternatively, the valve core 1 is cylindrical, and the bottom surface of the valve core 1 is a convex arc surface. Correspondingly, the side of the sealing structure that contacts it is a concave arc surface.

[0033] A valve body includes the aforementioned sealing structure for reducing damage from foreign objects during valve core 1 rotation. It includes valve core 1 and a housing 11 for accommodating valve core 1. The housing 11 has an inlet and an outlet, and a connecting pipe 12 is connected to both the inlet and the outlet. The sealing structure is rotatably connected to the end of the connecting pipe 12 facing valve core 1 and is in a sealing fit with valve core 1.

[0034] The inner wall of the connecting pipe 12 facing the valve core 1 has a recessed platform 13. The sealing structure is rotatably fitted in the recessed platform 13. The recessed platform 13 serves as a rotation limit for the sealing structure, thereby improving the stability of the sealing structure during rotation. Additionally, a self-lubricating sealing gasket 14 is provided between the annular frame 2 and the bottom surface of the recessed platform 13. The self-lubricating sealing gasket 14 is made of polyurethane, which has a high resistance to compression. That is, it can provide stable support for the sealing structure while also having a self-lubricating effect, which is beneficial to the rotation of the sealing structure.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for reducing damage from foreign objects during valve core rotation, characterized in that: The steps include the following: A sealing structure is rotatably installed within the inlet and outlet positions of the valve core housing. This sealing structure is in sealing cooperation with the valve core and can rotate freely within the inlet and outlet. A transmission structure is provided between the valve core and the sealing structure, which can drive the sealing structure to rotate when the valve core rotates.

2. The method for reducing foreign object damage during valve core rotation according to claim 1, characterized in that: The sealing structure includes an annular frame and a sealing ring, wherein the sealing ring is fixedly installed on the annular frame and is located on the side of the annular frame facing the valve core. The transmission structure is located between the annular frame and the valve core.

3. The method for reducing foreign object damage during valve core rotation according to claim 2, characterized in that: The sealing ring is a ceramic sealing ring, with one side embedded in the annular frame and the other side protruding out of the annular frame; The inner wall of the annular frame is provided with at least one limiting groove, and the outer wall of the sealing ring is provided with at least one limiting protrusion, which is inserted into the limiting groove.

4. The method for reducing damage from foreign objects during valve core rotation according to claim 2, characterized in that: The sealing ring is a rubber ring, and the annular frame has an annular groove on the side facing the valve core. The sealing ring is installed in the annular groove, and one side protrudes out of the annular groove. The bottom of the annular groove is provided with several limiting holes, and the sealing ring is provided with several limiting blocks that correspond one-to-one with the limiting blocks. The limiting blocks are inserted into the limiting holes.

5. The method for reducing foreign object damage during valve core rotation according to claim 1, characterized in that: The valve core sidewall is provided with an annular guide groove, and the sealing structure is inserted into the guide groove and seals with the guide groove. The width of the guide groove is equal to the outer diameter of the sealing structure.

6. The method for reducing foreign object damage during valve core rotation according to claim 1, characterized in that: The valve core is spherical, and the bottom surface of the guide groove is spherical; Alternatively, the valve core may be cylindrical, and the bottom surface of the valve core may be arc-shaped.

7. The method for reducing foreign object damage during valve core rotation according to any one of claims 1 to 6, characterized in that: The transmission structure includes a first gear ring disposed on the outer wall of the annular frame and a second gear ring disposed on the valve core. The second gear ring and the first gear ring mesh with each other, and the plane on which the first gear ring is located intersects the plane on which the second gear ring is located perpendicularly. The second gear ring is coaxially arranged with the rotation axis of the valve core.

8. A valve body based on the method for reducing foreign object damage during valve core rotation as described in claim 7, characterized in that: It includes a valve core and a housing for accommodating the valve core. The housing has an inlet and an outlet, and each inlet and outlet is connected to a connecting pipe. The sealing structure is rotatably connected to the end of the connecting pipe facing the valve core and is in sealing cooperation with the valve core.

9. The valve body according to claim 8, characterized in that: The inner wall of the connecting pipe facing the valve core has a recessed platform, and the sealing structure is rotatably fitted into the recessed platform.

10. The valve body according to claim 9, characterized in that: A self-lubricating sealing gasket is provided between the annular frame and the bottom surface of the platform.

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