Ball valve capable of reducing torque

Abstract

The utility model discloses a ball valve capable of reducing torque, which comprises a valve shell, a valve plastic bag fixedly arranged in the valve shell and a valve core rotatably arranged in the valve plastic bag, a first through hole is arranged on the valve core, the shape of the valve plastic bag is matched with that of the valve core, a second through hole is arranged on the valve plastic bag, and the valve core is arranged in the second through hole. When the first through hole and the second through hole are consistent in direction, flow is conducted, when the first through hole and the second through hole are perpendicular in direction, flow is blocked, a valve rod on the valve element extends out of the valve shell, the extending end of the valve rod is used for being fixedly connected with an execution element, at least one groove is formed in the side wall of the valve element, and the concave direction of the groove is perpendicular to the direction of the first through hole. The groove depth is smaller than the wall thickness of the valve element. Friction force and torque when the ball valve is opened and closed can be reduced, abrasion of the ball valve is reduced, the service life of the ball valve is prolonged, and the ball valve can be opened and closed in a more labor-saving mode. The utility model is suitable for industrial and agricultural irrigation or daily life, and is used for controlling the on and off of fluid.

Description

Technical Field

[0001] The utility model relates to a ball valve, in particular to a ball valve capable of reducing torque. Background Art

[0002] The structure of the existing ball valve is as follows Figure 1 、 2 As shown, from the outside to the inside, it comprises a valve housing, a valve plastic package fixed within the valve housing, and a valve core rotatably mounted within the valve plastic package. The valve core is provided with a through-hole, and a valve stem on the valve core extends from the valve housing for connection to an actuator. The actuator drives the valve core to rotate until the through-hole aligns with the fluid flow, allowing flow. When the valve core rotates until the through-hole is perpendicular to the fluid flow, i.e., when the through-hole abuts against the valve plastic package, flow is blocked.

[0003] However, the valve core in the above-mentioned ball valve is in constant contact with the valve plastic package during the rotation process, resulting in large friction and torque, making it more laborious to open and close the ball valve. Utility Model Content

[0004] The utility model aims to provide a ball valve capable of reducing torque, so as to solve the problems existing in the prior art of large friction and large torque between the valve core and the valve plastic package when the valve core rotates.

[0005] In order to achieve the above purpose, the technical solutions adopted by the present utility model are as follows:

[0006] A ball valve capable of reducing torque comprises a valve housing, a valve plastic package fixedly arranged in the valve housing, and a valve core rotatably arranged in the valve plastic package. A first through hole is provided on the valve core, the shape of the valve plastic package is adapted to the shape of the valve core, and a second through hole is provided on the valve plastic package. When the first through hole and the second through hole are in the same direction, flow passes through, and when the first through hole and the second through hole are in a perpendicular direction, flow is blocked. A valve stem on the valve core extends from the valve housing, and the protruding end of the valve stem is used for fixed connection with an actuator. At least one groove is provided on the side wall of the valve core, the concave direction of the groove is perpendicular to the direction of the first through hole, and the depth of the groove is less than the wall thickness of the valve core.

[0007] As a limitation of the present invention: there are two grooves, one each provided on the left and right side walls of the valve core.

[0008] As a further limitation of the present invention: the groove is a circular groove.

[0009] As a further limitation of the present invention: the valve plastic bag is made of soft PVC material.

[0010] As another limitation of the present invention: the actuator is a controller, a connecting piece is fixed on the valve housing, the valve stem passes through the connecting piece, the controller is fixed on the connecting piece, and the rotating part of the controller is fixedly connected to the protruding end of the valve stem.

[0011] As a further limitation of the present invention: a connection portion for mounting a pressure sensor is provided on the valve housing, and the connection portion is any one of the following structures:

[0012] a. The connection part is a threaded hole opened on the valve housing;

[0013] b. The connecting portion includes a through hole provided through the valve housing, and an injection-molded embedded nut made of metal material and embedded in the through hole.

[0014] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0015] This utility model improves upon existing ball valves by providing at least one groove on the valve core, with the groove's direction perpendicular to the direction of the first through hole and a depth less than the wall thickness of the valve core. When the valve core rotates relative to the valve plastic package, the groove prevents contact between the valve core and the plastic package. Therefore, friction between the groove and the plastic package is eliminated during rotation, reducing friction and torque throughout the valve. This reduces wear and tear on the ball valve, extending its service life, and making opening and closing the valve more labor-efficient.

[0016] To sum up, the utility model can reduce the friction and torque when opening and closing the ball valve, which not only reduces the wear of the ball valve and extends its service life, but also allows the ball valve to be opened and closed more effortlessly; the utility model is suitable for industrial, agricultural irrigation or daily life, and is used to control the flow of fluids. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 It is a structural diagram of a ball valve in the prior art;

[0019] Figure 2 It is an exploded view of a ball valve in the prior art;

[0020] Figure 3 This is a schematic structural diagram of an embodiment of the present utility model;

[0021] Figure 4 This is an exploded view of an embodiment of the present utility model;

[0022] Figure 5 This is an exploded view of the injection-molded embedded nut and the through hole in the embodiment of the present utility model;

[0023] Figure 6 It is a structural schematic diagram of an embodiment of the utility model from another perspective;

[0024] Figure 7 for Figure 6 Cross-sectional view along the AA axis.

[0025] In the figure: 1-valve housing, 2-valve plastic package, 21-second through hole, 3-valve core, 31-first through hole, 32-valve stem, 33-groove, 4-connector, 5-through hole, 6-injection molded embedded nut, 7-sealing ring, 8-column. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and do not constitute a limitation to the present invention.

[0027] The directional terms or positional relationships such as "left" and "right" described in the embodiment are based on the figures in the specification of the utility model. Figure 4 The orientation relationship is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on the content protected by the present invention.

[0028] This embodiment improves the valve core 3 of the ball valve in the prior art by providing a groove 33 on the side wall of the valve core 3 , thereby reducing friction and torque between the valve core 3 and the valve plastic package 2 during rotation.

[0029] like Figures 3 to 7 As shown, this embodiment includes, from outside to inside, a valve housing 1, a valve plastic package 2 fixedly mounted within the valve housing 1, and a valve core 3 rotatably mounted within the valve plastic package 2. The valve core 3 is provided with a first through hole 31. The shape of the valve plastic package 2 matches that of the valve core 3. The valve plastic package 2 is formed by connecting two semicircular structures. The "matching" here means that when the valve core 3 rotates to the direction of the first through hole 31 and the direction of water flow, the valve plastic package 2 can completely wrap the side wall of the valve core 3. At this time, the valve plastic package 2 and the side wall of the valve core 3 are not in contact only at the groove 33. That is, except for the groove 33, the side wall of the valve core 3 is tightly attached to the valve plastic package 2. The valve plastic package 2 is provided with a second through hole 21. When the first through hole 31 and the second through hole 21 are in the same direction, flow passes. When the first through hole 31 and the second through hole 21 are in a perpendicular direction, flow is blocked. The valve stem 32 on the valve core 3 extends from the valve housing 1, and the protruding end of the valve stem 32 is used to be fixedly connected to the actuator; a sealing ring 7 is provided on the valve stem 32 to achieve a seal between the valve stem 32 and the valve housing 1 to prevent liquid from flowing out from above the valve housing 1. The above part is the existing technology and will not be described in detail in this embodiment.

[0030] In this embodiment, at least one groove 33 is formed on the side wall of the valve core 3. The direction of the groove 33 is perpendicular to the direction of the first through hole 31. Figure 4As shown, the opening of the groove 33 in this embodiment faces right and is recessed from right to left. This structure ensures that when the valve core 3 rotates, the groove 33 on the side wall of the valve core 3 does not contact the valve plastic package 2. The depth of the groove 33 is less than the thickness of the valve core 3 wall; in other words, the groove 33 does not penetrate the side wall of the valve core 3. This structure does not affect the flow of fluid through the first through hole 31, but also reduces the contact area between the valve core 3 and the valve plastic package 2, thereby reducing friction between them.

[0031] like Figure 4 、 6 As shown in Figures 7 and 8, in this embodiment, there are two grooves 33, one each on the left and right side walls of the valve core 3. The two grooves 33 are symmetrical about the first through hole 31. In this embodiment, the grooves 33 are circular, their shape matching the overall outer contour of the valve core 3. Of course, they can also be square grooves or grooves of other shapes. In this embodiment, the number of grooves 33 can also be one, three, or another number.

[0032] The valve plastic cover 2 is made of soft PVC and has a certain degree of deformation. If a small amount of particles such as sand or mud enters the space between the valve plastic cover 2 and the valve core 3, the particles will be trapped in the valve plastic cover 2, while the valve core 3 can still rotate normally. In contrast, valve plastic covers made of hard materials do not have this deformation ability. If particles enter, they will be stuck between the valve plastic cover 2 and the valve core 3, preventing the valve core 3 from rotating.

[0033] The actuator uses the controller in the existing technology to achieve automatic control. In order to facilitate the installation of the controller, such as Figure 3 、 4 As shown, in this embodiment, a connector 4 is fixedly mounted on the valve housing 1. In this embodiment, the connector 4 is made of polypropylene. Four upright posts 8 are integrally mounted on the valve housing 1 and are fixedly connected to the connector 4 and the upright posts 8 by bolts. The valve stem 32 extends through the connector 4. During installation, the controller is fixedly mounted on the connector 4. The rotating portion of the controller is fixedly connected to the protruding end (i.e., the top end) of the valve stem 32. Rotation of the rotating portion of the controller drives the valve core 3 to open and close the flow. Of course, the actuator can also be a handle as known in the art, fixedly connected to the valve stem 32, to manually control the opening and closing of the ball valve.

[0034] Furthermore, the valve housing 1 is provided with a connection portion for installing a pressure sensor, such as Figure 5 As shown, in this embodiment, the connection portion includes a through hole 5 that penetrates the valve housing 1, and an injection molded embedded nut 6 made of metal material that is embedded in the through hole 5. During installation, the pressure sensor is screwed into the injection molded embedded nut 6.

[0035] Of course, the connection portion can also be a threaded hole opened in the valve housing 1, and the pressure sensor can be directly screwed into the threaded hole during installation. However, since the valve housing 1 is made of plastic, the pressure sensor is prone to slipping after being screwed in and out repeatedly. The injection-molded embedded nut 6 is made of metal and is less susceptible to wear, which can prevent the slipping problem.

[0036] This embodiment features a groove 33 on the sidewall of the valve core 3 to reduce friction and torque between the valve core 3 and the valve plastic package 2 during rotation. This makes manual valve opening and closing easier. For automated valve control, since opening and closing ball valves is more labor-efficient, the controller can utilize a smaller battery, a smaller gear ratio, or a smaller motor, thereby reducing controller costs. Consequently, the actuator structure becomes more compact and lighter.

[0037] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still modify the technical solutions described in the above embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A ball valve capable of reducing torque, comprising a valve housing, a valve plastic package fixedly mounted in the valve housing, and a valve core rotatably mounted in the valve plastic package. The valve core is provided with a first through hole, the shape of the valve plastic package being adapted to the shape of the valve core. The valve plastic package is provided with a second through hole, flow is allowed when the first through hole and the second through hole are aligned, and flow is blocked when the first through hole and the second through hole are perpendicular. A valve stem on the valve core extends from the valve housing, and the extended end of the valve stem is used for fixed connection with an actuator, characterized in that: At least one groove is provided on the side wall of the valve core, the recessed direction of the groove is perpendicular to the direction of the first through hole, and the depth of the groove is less than the thickness of the valve core wall.

2. A ball valve capable of reducing torque according to claim 1, characterized in that: There are two grooves, one on the left side wall and one on the right side wall of the valve core.

3. A ball valve capable of reducing torque according to claim 2, characterized in that: The groove is a circular groove.

4. A ball valve capable of reducing torque according to claim 3, characterized in that: The valve plastic bag is made of soft PVC material.

5. A ball valve capable of reducing torque according to any one of claims 1 to 4, characterized in that: The actuator is a controller. A connecting piece is fixed on the valve housing. The valve stem passes through the connecting piece. The controller is fixed on the connecting piece. The rotating part of the controller is fixedly connected to the outlet end of the valve stem.

6. A ball valve capable of reducing torque according to claim 5, characterized in that: The valve housing is provided with a connection portion for mounting a pressure sensor, which can be any of the following structures: a. The connection part is a threaded hole opened on the valve housing; b. The connecting portion includes a through hole provided through the valve housing, and an injection-molded embedded nut made of metal material and embedded in the through hole.

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