Plug valve capable of preventing accidental touch

Abstract

The utility model discloses an anti-mistaken-touch plug valve which comprises a valve body and a valve rod rotationally installed on the valve body, and further comprises a handle assembly which is connected with the valve rod and used for rotating the valve rod and comprises a handle body, a limiting gear ring, a sliding block, a limiting block, a spring and a lifting plate. One end of the handle body is connected with the top of the valve rod, a sliding groove is formed in the handle body in the length direction of the handle body, the valve body is sleeved with the limiting gear ring, the sliding block is installed in the sliding groove in a sliding mode, and the limiting block is connected with the sliding block. The valve is easy and convenient to operate, and the phenomenon that the handle body drives the valve rod to rotate due to the fact that the handle body is manually touched by mistake is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plug valves, in particular to a plug valve which can prevent accidental contact. Background Art

[0002] Plug valves are widely used in various industries, especially in various heavy industries and chemical industries. They are a type of valve that can be opened or closed by rotating the valve plug 90 degrees to make the channel opening on the valve body the same or separate. Plug valves are most suitable for cutting off and connecting media.

[0003] The existing plug valve is prone to accidental human contact with the handle, causing the handle to drive the valve stem to rotate, thereby affecting the opening of the valve and affecting the normal use of the valve. Summary of the invention

[0004] In view of the above problems of the existing plug valve, the present invention aims to provide a plug valve which has an anti-accidental-collision function and is easy to operate.

[0005] The specific technical solutions are as follows:

[0006] A plug valve for preventing accidental contact comprises a valve body and a valve stem rotatably mounted on the valve body, and further comprises a handle assembly, wherein the handle assembly is connected to the valve stem and is used to rotate the valve stem, and comprises:

[0007] A handle body, one end of which is connected to the top of the valve stem, and a slide groove is provided on the handle body in its length direction;

[0008] A limiting gear ring, wherein the limiting gear ring is sleeved on the outside of the valve body;

[0009] A sliding block, the sliding block is slidably installed in the sliding groove;

[0010] A limit block, wherein the limit block is connected to the sliding block, and a side of the limit block close to the limit gear ring has a limit tooth surface with an arc-shaped structure;

[0011] A spring, wherein the spring is connected between the sliding block and the side wall of the sliding groove, and the limiting tooth surface is meshed with the limiting gear ring through the elastic force of the spring to lock the handle body;

[0012] A lifting plate, which can be longitudinally slidably arranged at the bottom of the other end of the handle body, and the lifting plate is connected to the sliding block through a transmission component. When the lifting plate is manually lifted, the lifting plate drives the sliding block through the transmission component to overcome the elastic force of the spring and slide away from the valve body, so that the limiting tooth surface is disengaged from the limiting gear ring. When the lifting plate is released, the sliding block is reset under the elastic force of the spring, so that the limiting tooth surface is engaged with the limiting gear ring.

[0013] As a further improvement and optimization of this solution, the transmission assembly includes:

[0014] A driven block, the other end of the handle body has a sliding cavity, the driven block and the sliding cavity form a sliding fit along the length direction of the handle body, the driven block has a driving groove, and a side wall of the driving groove away from the sliding block is provided with a first inclined surface;

[0015] A connecting rod, the connecting rod is connected between the sliding block and the driven block, and can be slidably mounted on the handle body along the length direction of the handle body;

[0016] An active block, the top of which slides through the driving groove and can be longitudinally slidably installed in the sliding cavity, the bottom of the active block is connected to the lifting plate, and the active block has a second inclined surface on the side facing the first inclined surface, the second inclined surface is in fit contact with the first inclined surface, when the lifting plate is lifted, the active block slides upward in the sliding cavity, the second inclined surface slides relative to the first inclined surface, so that the driven block slides away from the valve body.

[0017] As a further improvement and optimization of the present solution, the active block is connected to the lifting plate via a sliding rod, and the sliding rod is longitudinally slidably mounted on the handle body.

[0018] As a further improvement and optimization of this solution, the spring sleeve is arranged outside the connecting rod.

[0019] As a further improvement and optimization of the present solution, the two side walls of the sliding cavity are respectively provided with longitudinally arranged sliding grooves, and the top two sides of the active block are each provided with a sliding block, and the two sliding blocks respectively form a longitudinal sliding fit with the two sliding grooves.

[0020] As a further improvement and optimization of the present solution, a booster spring is further provided in each of the sliding grooves, and the booster spring is provided between the sliding block and the top inner wall of the sliding groove.

[0021] As a further improvement and optimization of the present solution, the slide groove and the slide cavity are connected via a slide hole, and the connecting rod is slidably installed in the slide hole.

[0022] As a further improvement and optimization of the present solution, the bottom of the other end of the handle body has a hole body connected to the sliding cavity, and the sliding rod is slidably installed in the hole body.

[0023] As a further improvement and optimization of this solution, the limit block and the sliding block are connected via a connecting column.

[0024] As a further improvement and optimization of this solution, the connecting column is threadedly connected to the limiting block.

[0025] Compared with the prior art, the above technical solution has the following positive effects:

[0026] (1) In the present invention, after the valve is opened or closed, the limit gear ring engages with the limit gear surface to limit the circumferential position of the handle body, thereby preventing the handle body from accidentally touching the handle body and causing the valve stem to rotate.

[0027] (2) In the present invention, when it is necessary to operate the valve to open or close, one only needs to hold the other end of the handle body and lift the lifting plate with fingers to release the circumferential limit on the handle body. Not only is the operation simple and convenient, but the lifting plate is also arranged below the other end of the handle body, further preventing the handle body from being released from the circumferential limit due to accidental contact with the lifting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of a plug valve that prevents accidental contact in the utility model;

[0029] Figure 2 It is a schematic diagram of an explosion of a plug valve for preventing accidental contact according to the utility model;

[0030] Figure 3 It is a structural schematic diagram of a transmission assembly of a plug valve for preventing accidental contact according to the utility model;

[0031] Figure 4 It is a schematic diagram of a plug valve for preventing accidental contact according to the utility model, in which the first inclined surface and the second inclined surface are in complete contact with each other;

[0032] In the accompanying drawings: 1. valve body; 2. valve stem; 3. handle body; 4. sliding block; 5. spring; 6. lifting plate; 7. transmission assembly; 8. connecting column; 9. limit block; 11. limit gear ring; 111. scale mark; 31. slide groove; 32. slide cavity; 71. driven block; 72. connecting rod; 73. assist spring; 74. slide rod; 75. active block; 91. limit tooth surface; 321. sliding groove; 711. driving groove; 712. first inclined surface; 751. second inclined surface; 752. slider. DETAILED DESCRIPTION

[0033] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Figure 1 This is a schematic diagram of the structure of a plug valve that prevents accidental contact in the utility model. Figure 2 This is a schematic diagram of an explosion of a plug valve that prevents accidental contact according to the utility model. Figure 3 This is a schematic diagram of the structure of a transmission assembly of a plug valve that prevents accidental contact in the utility model. Figure 4 FIG. 1 is a schematic diagram of a plug valve for preventing accidental contact according to the utility model in which the first inclined surface and the second inclined surface are completely in contact with each other, as shown in FIG. Figure 1-4As shown, a preferred embodiment of a plug valve for preventing accidental contact is shown, including a valve body 1 and a valve stem 2 rotatably mounted on the valve body 1, and also including: a handle assembly, the handle assembly is connected to the valve stem 2 and is used to rotate the valve stem 2, which includes a handle body 3, a limit gear ring 11, a sliding block 4, a limit block 9, a spring 5 and a lifting plate 6, one end of the handle body 3 is connected to the top of the valve stem 2, and a slide groove 72 is provided on the handle body 3 in its own length direction, the limit gear ring 11 is sleeved on the outside of the valve body 1, the sliding block 4 is slidably installed in the slide groove 72, the limit block 9 is connected to the sliding block 4, and the limit block 9 has a limit arc structure on one side close to the limit gear ring 11. The limiting tooth surface 91 and the spring 5 are connected between the sliding block 4 and the side wall of the sliding groove 72. The elastic force of the spring 5 makes the limiting tooth surface 91 mesh with the limiting gear ring 11 to lock the handle body 3. The lifting plate 6 can be longitudinally slidably arranged at the bottom of the other end of the handle body 3. The lifting plate 6 and the sliding block 4 are connected through the transmission component 7. When the lifting plate 6 is manually lifted, the lifting plate 6 drives the sliding block 4 to overcome the elastic force of the spring 5 and slide away from the valve body 1 through the transmission component 7, so that the limiting tooth surface 91 is disengaged from the limiting gear ring 11. When the lifting plate 6 is released, the sliding block 4 is reset under the elastic force of the spring 5, so that the limiting tooth surface 91 is meshed with the limiting gear ring 11.

[0037] In this embodiment, when it is necessary to open or close the valve, the other end of the handle is held by hand, and the lifting plate 6 is lifted with the fingers. The lifting plate 6 drives the sliding block 4 to slide away from the valve body 1 in the sliding groove 72 through the transmission assembly 7, and drives the limiting tooth surface 91 on the limiting block 9 to disengage from the limiting gear ring 11. At this time, the valve stem 2 can be driven to rotate by rotating the handle body 3 to open or close the valve. At this time, the lifting plate 6 is released, and the sliding block 4 is reset under the elastic force of the spring 5, and the limiting gear ring 11 is engaged with the limiting tooth surface 91 to circumferentially limit the handle body 3.

[0038] In this embodiment, after the valve is opened or closed, the limiting gear ring 11 meshes with the limiting tooth surface 91 to circumferentially limit the handle body 3 to prevent the handle body 3 from accidentally touching the handle body 3 and causing the handle body 3 to drive the valve stem 2 to rotate.

[0039] In this embodiment, when it is necessary to operate the valve to open or close, one only needs to hold the other end of the handle body 3 and lift the lifting plate 6 with fingers to release the circumferential limit of the handle body 3. Not only is the operation simple and convenient, but the lifting plate 6 is also arranged below the other end of the handle body 3, which further avoids accidental contact with the lifting plate 6 and causes the circumferential limit of the handle body 3 to be released.

[0040] Further, as a preferred embodiment, the transmission assembly 7 includes a driven block 71, a connecting rod 72 and an active block 75. The other end of the handle body 3 has a sliding cavity 32. The driven block 71 and the sliding cavity 32 form a sliding fit along the length direction of the handle body 3. The driven block 71 has a driving groove 711. The side wall of the driving groove 711 away from the sliding block 4 is provided with a first inclined surface 712. The connecting rod 72 is connected between the sliding block 4 and the driven block 71, and can be slidably installed along the length direction of the handle body 3. On the handle body 3, the top of the active block 75 slides through the driving groove 711 and can be longitudinally slidably installed in the sliding cavity 32. The bottom of the active block 75 is connected to the lifting plate 6, and the active block 75 has a second inclined surface 751 on the side facing the first inclined surface 712. The second inclined surface 751 is in contact with the first inclined surface 712. When the lifting plate 6 is lifted, the active block 75 slides upward in the sliding cavity 32, and the second inclined surface 751 slides relative to the first inclined surface 712, so that the driven block 71 slides away from the valve body 1.

[0041] In this embodiment, when the lifting plate 6 is lifted by the finger, the active block 75 is driven to slide upward in the sliding cavity 32. While sliding upward, the driven block 71 slides away from the valve body 1 under the guidance of the second inclined surface 751 and the first inclined surface 712 until the limiting tooth surface 91 is disengaged from the limiting gear ring 11. When the lifting plate 6 is released, the elastic force of the spring 5 on the sliding block 4 causes the sliding block 4 to slide close to the valve body 1 and drives the driven block 71 to slide synchronously until the limiting tooth surface 91 is engaged with the limiting gear ring 11. At the same time, the active block 75 slides downward under the guidance of the first inclined surface 712 and the second inclined surface 751 until the lifting plate 6 is reset.

[0042] Furthermore, as a preferred embodiment, the active block 75 is connected to the lifting plate 6 via a sliding rod 74 and is longitudinally slidably mounted on the handle body 3 .

[0043] Furthermore, as a preferred embodiment, in order to improve the installation stability of the spring 5 , the spring 5 is sleeved on the outside of the connecting rod 72 .

[0044] Furthermore, as a preferred embodiment, the two side walls of the sliding cavity 32 have longitudinally arranged sliding grooves 321 respectively, and the top two sides of the active block 75 have a sliding block 752 respectively, and the two sliding blocks 752 respectively form a longitudinal sliding fit with the two sliding grooves 321.

[0045] Furthermore, as a preferred embodiment, in order to make the lifting plate 6 and the sliding block 4 reset more smoothly, each sliding groove 321 is further provided with a booster spring 73 , and the booster spring 73 is arranged between the slider 752 and the top inner wall of the sliding groove 321 .

[0046] Furthermore, as a preferred embodiment, the slide groove 72 is connected to the slide cavity 32 via a slide hole, and the connecting rod 72 is slidably installed in the slide hole.

[0047] Furthermore, as a preferred embodiment, the bottom of the other end of the handle body 3 has a hole body connected to the sliding cavity 32, and the sliding rod 74 is slidably installed in the hole body.

[0048] Furthermore, as a preferred embodiment, the limiting block 9 and the sliding block 4 are connected via a connecting column 8 .

[0049] Furthermore, as a preferred embodiment, the connecting column 8 is threadedly connected to the limiting block 9 to facilitate the disassembly, assembly and replacement of the limiting block 9.

[0050] Preferably, a scale mark 111 is provided around the top end surface of the valve body 1 to facilitate control of the opening of the valve.

[0051] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A plug valve for preventing accidental contact, comprising a valve body and a valve stem rotatably mounted on the valve body, characterized in that: Also includes: A handle assembly, the handle assembly is connected to the valve stem and is used to rotate the valve stem, and comprises: A handle body, one end of which is connected to the top of the valve stem, and a slide groove is provided on the handle body in its length direction; A limiting gear ring, wherein the limiting gear ring is sleeved on the outside of the valve body; A sliding block, the sliding block is slidably installed in the sliding groove; A limit block, wherein the limit block is connected to the sliding block, and a side of the limit block close to the limit gear ring has a limit tooth surface with an arc-shaped structure; A spring, wherein the spring is connected between the sliding block and the side wall of the sliding groove, and the limiting tooth surface is meshed with the limiting gear ring through the elastic force of the spring to lock the handle body; A lifting plate, which can be longitudinally slidably arranged at the bottom of the other end of the handle body, and the lifting plate is connected to the sliding block through a transmission component. When the lifting plate is manually lifted, the lifting plate drives the sliding block through the transmission component to overcome the elastic force of the spring and slide away from the valve body, so that the limiting tooth surface is disengaged from the limiting gear ring. When the lifting plate is released, the sliding block is reset under the elastic force of the spring, so that the limiting tooth surface is engaged with the limiting gear ring.

2. The anti-accidental-touch plug valve according to claim 1, characterized in that: The transmission assembly comprises: A driven block, the other end of the handle body has a sliding cavity, the driven block and the sliding cavity form a sliding fit along the length direction of the handle body, the driven block has a driving groove, and a side wall of the driving groove away from the sliding block is provided with a first inclined surface; A connecting rod, the connecting rod is connected between the sliding block and the driven block, and can be slidably mounted on the handle body along the length direction of the handle body; An active block, the top of which slides through the driving groove and can be longitudinally slidably installed in the sliding cavity, the bottom of the active block is connected to the lifting plate, and the active block has a second inclined surface on the side facing the first inclined surface, the second inclined surface is in fit contact with the first inclined surface, when the lifting plate is lifted, the active block slides upward in the sliding cavity, the second inclined surface slides relative to the first inclined surface, so that the driven block slides away from the valve body.

3. The anti-accidental-touch plug valve according to claim 2, characterized in that: The active block is connected to the lifting plate via a sliding rod, and the sliding rod is longitudinally slidably mounted on the handle body.

4. The anti-accidental-touch plug valve according to claim 2, characterized in that: The spring is sleeved on the outside of the connecting rod.

5. The anti-accidental-touch plug valve according to claim 2, characterized in that: The two side walls of the sliding cavity are respectively provided with longitudinal sliding grooves, and the two sides of the top of the active block are respectively provided with a sliding block, and the two sliding blocks are respectively in longitudinal sliding cooperation with the two sliding grooves.

6. The anti-accidental-touch plug valve according to claim 5, characterized in that: Each of the sliding grooves is also provided with a booster spring, and the booster spring is provided between the sliding block and the top inner wall of the sliding groove.

7. The anti-accidental-touch plug valve according to claim 4, characterized in that: The slide groove is connected to the slide cavity through a slide hole, and the connecting rod is slidably installed in the slide hole.

8. The anti-accidental-touch plug valve according to claim 3, characterized in that: The bottom of the other end of the handle body has a hole body connected to the sliding cavity, and the sliding rod is slidably installed in the hole body.

9. The anti-accidental-touch plug valve according to claim 1, characterized in that: The limiting block and the sliding block are connected via a connecting column.

10. The anti-accidental-touch plug valve according to claim 9, characterized in that: The connecting column is threadedly connected to the limiting block.

Images