CN115949793A - Valve opening and closing tooling and valve opening and closing components - Google Patents

Abstract

The utility model relates to a frock is opened and close to valve and subassembly is opened and close to valve, the frock is opened and close to valve includes main part, clamping structure and drive structure, wherein, the main part has relative first side and second side, clamping structure set up in the first side of main part and including being used for a plurality of holders of centre gripping valve door wheel jointly, at least one holder position is adjustably connected in on the main part, drive structure set up in the second side of main part for link to each other with electric tool detachably in order to drive the main part is rotatory around self axis. Through above-mentioned technical scheme, the frock is opened and close to valve that this disclosure provided not only can effectively improve the work efficiency of opening and close the valve to great application scope has.

Description

Valve opening and closing tooling and valve opening and closing components

technical field

The present disclosure relates to the technical field of valves, in particular to a valve opening and closing device.

Background technique

A valve is a pipeline accessory with the functions of diversion, cut-off, throttling, check, diversion or overflow and pressure relief. At present, some industrial production enterprises such as thermal power plants use many manual valves to control various systems. The delivery method of the pipeline fluid in the pipeline, changing the passage section and the flow direction of the medium. Valves used for fluid control range from the simplest shut-off valve to various valves used in extremely complex automatic control systems. valves for industrial pipelines.

The valves in the prior art are generally operated manually by manually rotating the valve door wheel or with the help of an external force bar. Therefore, the operation and control of the valve is a very cumbersome matter. The increase in the number of valves in the system brings pressure on the operation of the valve There is a lot of labor load, and the valve operation is time-consuming and laborious.

In the related art, for example, the patent document with publication number CN106895190A provides a valve opener, which can improve the degree of automation of valve opening and closing through the cooperation of a rotating rod, a rotating shaft, a fastening device and a motor, but the device It can only be adapted to a specific valve, and cannot be adapted to different valves in various systems, so the scope of application is limited.

Contents of the invention

The purpose of the present disclosure is to provide a valve opening and closing tool, which can not only effectively improve the working efficiency of the opening and closing valve, but also has a wider application range.

In order to achieve the above purpose, the present disclosure provides a valve opening and closing tool, the valve opening and closing tool includes: a main body, the main body has a first side and a second side opposite to each other, and a clamping structure, the clamping structure is arranged on The first side of the main body and includes a plurality of clamping members for collectively clamping the valve wheel, at least one of the clamping members is positionally adjustable connected to the main body, and a driving structure, the driving structure It is arranged on the second side of the main body, and is used for detachably connecting with the electric tool to drive the main body to rotate around its own axis.

Optionally, the plurality of clamping pieces are respectively connected to the main body in an adjustable position and distributed at intervals in the circumferential direction, and the clamping structure further includes an adjustment mechanism and a locking mechanism, and the adjustment mechanism is connected to the The plurality of clamping pieces are respectively driven and connected to adjust the position of the multiple clamping pieces relative to the main body synchronously, and the locking mechanism is used to unlockably lock the adjustment mechanism to lock the multiple clamping pieces The component is locked in its current position.

Optionally, the adjustment mechanism includes an expansion disc, a connecting rod, and a guide groove, and each clamping member includes an extension rod and a clamping rod located at an outer end of the extension rod, and a plurality of the clamping rods are used to jointly Clamping the valve wheel, the expansion disc is rotatably arranged on the main body around its own axis, the guide groove is fixed on the main body and extends in a direction tangential to the self axis of the expansion disc Parallel, the extension rod is slidably connected to the guide groove, one end of the connection rod is fixed on the deployment disk and extends outward along the radial direction of the self axis of the deployment disk, the other end of the connection rod One end is slidably hinged to the inner end of the extension rod to extend or retract the extension rod relative to the main body when the deployment disc rotates.

Optionally, a radially extending chute is formed on the connecting rod, a pin shaft is fixed on the extension rod, and the pin shaft is slidably accommodated in the chute and can move relative to the chute. Rotate to set.

Optionally, the main body is formed with an inner chamber for accommodating the deployment disc, the connecting rod and the guide groove, the adjustment mechanism includes a transmission rod extending outward from the deployment disc out of the inner cavity, and the transmission rod An adjustment disc is fixed at the outer end of the outer end, the adjustment disc, the transmission rod and the deployment disc are arranged coaxially, and the locking mechanism includes a locking member that releasably resists the outer wall of the transmission rod.

Optionally, the locking mechanism includes a mounting bracket fixed on the outer wall of the main body, the mounting bracket is arranged around the transmission rod, and the locking member includes a plurality of locking bolts passing through the mounting bracket, The locking bolt is arranged along the radial direction of the transmission rod.

Optionally, there are four connecting rods arranged at equal intervals along the circumference of the deployment disk, four guide grooves are arranged at equal intervals around the deployment disk, and there are four clamping members. The main body is a rectangular boxed structure, the unfolding plate, the connecting rod and the guide groove are accommodated in the rectangular boxed structure, and the four side walls are respectively formed with telescopic holes for the expansion rod to expand and contract.

Optionally, the clamping rod is arranged perpendicular to the stretching rod and a clamping assembly is provided away from the end of the stretching rod, a plurality of clamping rods extend in the same direction and are parallel to each other, and the clamping assembly includes vertical With the first clamping arm and the second clamping arm of the clamping rod, at least one of the first clamping arm and the second clamping arm is rotatable relative to the clamping rod, and both A clamping space for clamping the valve door wheel is formed between them, and the clamping space has an opening away from the clamping rod outward, and a useful connection between the first clamping arm and the second clamping arm to the clamping bolt that closes the opening.

Optionally, the drive structure comprises a hexagonal post protruding from the main body on the second side, the hexagonal post being arranged coaxially with the own axis of the main body for insertion into a hexagonal socket of the power tool.

On the basis of the above technical solution, the present disclosure also provides a valve opening and closing assembly, including an electric tool and the above-mentioned valve opening and closing tool, and the electric tool is detachably connected to the driving structure.

Through the above technical solution, the valve opening and closing tooling provided in the present disclosure includes a main body and a clamping structure arranged on one side of the main body, and the clamping structure further includes a plurality of clamping pieces for clamping the valve wheel and at least one The clamping part is adjustable relative to the main body, so that during use, the position of the clamping part can be adjusted to realize the clamping of valve wheels of different specifications and sizes, and the other side of the main body is provided with a driving structure , can be connected with the corresponding electric tool, so after the clamping part completes the clamping of the valve wheel, the electric tool can drive the main body to drive the clamping part to rotate around the main body's own axis, and then drive the valve wheel to rotate to complete the pairing Valve opening and closing. Therefore, not only can the working efficiency of the opening and closing valve be effectively improved, but also has a larger application range by being able to adapt to different valves.

Other features and advantages of the present disclosure will be described in detail in the detailed description that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present disclosure, and constitute a part of the description, together with the following specific embodiments, are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the attached picture:

FIG. 1 is a schematic structural view of a valve opening and closing assembly and a valve wheel provided by an embodiment of the present disclosure;

Fig. 2 is a schematic structural view of the main body in the valve opening and closing tool provided by the embodiment of the present disclosure;

Fig. 3 is an enlarged schematic diagram of the structure at A of the valve opening and closing tool provided by the embodiment of the present disclosure;

Fig. 4 is another state of the enlarged schematic diagram of the structure at A of the valve opening and closing tooling provided by the embodiment of the present disclosure;

Fig. 5 is a structural schematic diagram of the main body and the adjustment mechanism in the valve opening and closing tool provided by the embodiment of the present disclosure;

Fig. 6 is a structural schematic diagram of the adjustment mechanism in the valve opening and closing tool provided by the embodiment of the present disclosure;

Fig. 7 is a schematic structural view of the clamping piece in the valve opening and closing tool provided by the embodiment of the present disclosure;

Fig. 8 is a schematic structural view of the valve opening and closing tool and the valve wheel provided by the embodiment of the present disclosure.

Explanation of reference signs

1-main body; 11-telescopic hole; 2-clamping structure; 201-expanding plate; 202-connecting rod; 2021-chute; 203-guide groove; 206-transmission rod; 207-adjusting disc; 208-locking piece; 209-installation bracket; 210-clamping assembly; 2101-first clamping arm; 2102-second clamping arm; 3-drive structure; 31-hexagonal column; 4-valve wheel; 5-electric tool.

Detailed ways

Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

In the present disclosure, the use of orientation words such as "inner and outer" refers to "inner and outer" relative to the contour of the corresponding component itself, unless stated to the contrary. The terms "first", "second" and the like used in the present disclosure are for distinguishing one element from another, and do not have order or importance. Furthermore, in the following description, when referring to the drawings, the same reference numerals in different drawings denote the same or similar elements unless otherwise explained. The above definitions are only used to explain and describe the present disclosure, and should not be construed as limiting the present disclosure.

According to a specific embodiment of the present disclosure, as shown in FIGS. Side, the clamping structure 2 is arranged on the first side of the main body 1 and includes a plurality of clamping pieces for jointly clamping the valve wheel 4, at least one clamping piece is connected to the main body 1 in an adjustable position, and the driving structure 3 It is arranged on the second side of the main body 1 and is used for detachably connecting with the electric tool 5 to drive the main body 1 to rotate around its own axis.

Through the above technical solution, the valve opening and closing tool provided in the present disclosure includes a main body 1 and a clamping structure 2 arranged on one side of the main body 1, and the clamping structure 2 further includes a plurality of clamps for clamping the valve wheel 4 and at least one clamping piece is adjustable in position relative to the main body 1. During use, the position of the clamping piece relative to the main body 1 can be adjusted to clamp valve wheels 4 of different specifications and sizes, and The other side of the main body 1 is provided with a driving structure 3, which can be connected with the corresponding electric tool 5. After the clamping piece completes the clamping of the valve wheel 4, the electric tool 5 can drive the main body 1 to drive the clamping piece around The main body 1 rotates on its own axis, and then drives the valve door wheel 4 to rotate to complete the opening and closing of the valve. Therefore, it can not only effectively improve the working efficiency of the opening and closing valve, but also has a larger application range by being able to adapt to different valves.

In the valve opening and closing tooling provided by the present disclosure, as an exemplary embodiment, as shown in FIG. 1 to FIG. Optionally, the plurality of clamping pieces can be selected to be evenly spaced along the circumferential direction of the main body 1, so that since the multiple clamping pieces are arranged at intervals along the circumferential direction, it can correspond to a generally circular valve door wheel The different circumferences of the valve are externally placed, so as to realize the clamping of the valve wheel, which can not only increase the reliability of the clamping of the valve wheel 4, but also improve the stability of the valve opening and closing tool during use, and avoid each clamping The damage degree of parts is inconsistent due to uneven force during use.

In addition, in order to realize the position adjustment of the clamping part, as an optional embodiment, the clamping structure 2 may also include an adjustment mechanism and a locking mechanism, wherein multiple clamping parts can be designed to adjust the position, and at this time the adjustment The mechanism can be respectively transmission-connected with multiple clamping pieces to synchronously adjust the position of multiple clamping pieces relative to the main body 1, and the locking mechanism can be used to unlockably lock the adjustment mechanism to lock multiple clamping pieces at the current position, In this way, during use, firstly, according to the size and specifications of the valve wheel 4 to be opened and closed, a plurality of clamping parts are synchronously adjusted to a position suitable for the size of the valve wheel 4 through the adjustment mechanism, that is, one operation action can simultaneously realize Synchronous adjustment of multiple clamping parts, easy to operate. Then lock the adjusting mechanism by the locking mechanism, that is, lock the position of the clamping member, so as to maintain the clamping of the valve wheel 4, thereby opening and closing the valve by driving the electric tool, and , the locking mechanism can unlock the locking of the adjusting mechanism to repeatedly adjust the position of the clamping member.

In other possible embodiments, the clamping piece can also have only one adjustable position, or some of them can adjust the position, or in the case of multiple clamping pieces that can adjust the position, each clamping piece can be adjusted independently. The mechanism performs position adjustment, and the present disclosure is not limited to this.

In the embodiment shown in the figure, in order to realize synchronous adjustment of multiple clamping parts, the adjustment mechanism may include an expansion plate 201, a connecting rod 202 and a guide groove 203, and each clamping part may include an extension rod 204 and a position on the extension rod 204 The clamping rod 205 at the outer end of the outer end, a plurality of clamping rods 205 are used to jointly clamp the valve door wheel 4 along the circumferential direction, the unfolding disc 201 is arranged on the main body 1 so that it can rotate around its own axis, and the guide groove 203 can be fixed on the main body 1 and the extension direction is parallel to the tangential direction of the self-axis of the deployment disc 201, the extension rod 204 is slidably connected to the guide groove 203, and one end of the connecting rod 202 can be fixed on the deployment disc 201 and along the self-axis of the deployment disc 201 Extending radially outward, the other end of the connecting rod 202 can be slidably hinged with the inner end of the extending rod 204, that is, the connecting rod and the extending rod can slide relative to each other while rotating, so that when the unfolding disc 201 rotates, the The extension rod 204 protrudes or retracts relative to the main body 1 along the guide groove 203 . Specifically, when the unfolding disk 201 is rotated, the extension rod 204 can slide along its own length in the guide groove 203 driven by the connecting rod 202 , so as to guide and limit the movement range of the extension rod 204 .

Specifically, as shown in FIG. 2 to FIG. 4 , a sliding slot 2021 extending radially may be formed on the connecting rod 202 , and a pin shaft 2041 may be fixed on the extension rod 204 , and the pin shaft 2041 is slidably accommodated in the sliding slot 2021 centered and rotatably set relative to the chute 2021, so that the extension rod 204 is connected with the connecting rod 202 through the cooperation of the chute 2021 and the pin shaft 2041 to form a hinge point that can slide within the range of the chute 2021, specifically, when When the unfolding disk 201 is rotated, the connecting rod 202 rotates synchronously with the unfolding disk 201, and pushes the pin shaft 2041 through the chute 2021, that is, the extension rod 204 to slide along the length direction of the chute 2021, and the extension rod 204 realizes the extension relative to the main body 1. out or retract. Of course, a pin shaft may also be fixed on the connecting rod 202, and a chute extending along its length direction may be formed on the extending rod 204, and the purpose of extending or retracting the extending rod 204 relative to the main body 1 may also be achieved. This is not specifically limited. Wherein, referring to FIG. 3 and FIG. 4 , different states of relative sliding and rotation between the connecting rod 202 and the extending rod 204 are shown respectively.

In the specific embodiment provided by the present disclosure, as shown in FIG. 5 , in order to increase the strength of the main body, the main body can be formed into a boxed structure, that is, the inside of the main body 1 can be formed to accommodate the unfolding disc 201 , the connecting rod 202 and the guide groove 203 The inner cavity, so that the boxed structure can also protect the components contained in it. In this case, for the convenience of operation, the adjustment mechanism can include a transmission rod 206 extending outward from the expansion disk 201 to the inner cavity, and the outer end of the transmission rod 206 can be fixed with an adjustment disk 207, and the adjustment disk 207, the transmission rod 206 and the expansion The disc 201 is arranged coaxially, because the unfolding disc 201 is arranged in the inner cavity of the main body 1, and the setting adjustment disc 207 can make the unfolding disc 201 rotate through the transmission rod 206, which is convenient for operation.

In other possible embodiments, the main body may also be in the shape of a plate, and various mechanisms are directly mounted on the plate. At this time, various possible rotation operations may be directly performed on the unfolding disc 201 , which is not limited in the present disclosure.

As an example, as shown in FIG. 6, the locking mechanism may include a locking member 208 releasably resisting the outer wall of the transmission rod 206, and a mounting bracket 209 fixed on the outer wall of the main body 1. The mounting bracket 209 may surround The transmission rod 206 is set, and the locking member 208 can include a plurality of locking bolts passing through the mounting bracket 209, and the locking bolts are arranged along the radial direction of the transmission rod 206, so that when the position of the clamping member is adjusted by the adjustment mechanism After adjustment, the locking member 208 fixes the transmission rod 206 and the main body 1 through the mounting bracket 209 fixed on the outer wall of the main body 1 , completing the fixing of the position of the clamping member relative to the main body 1 .

Specifically, the mounting bracket 209 may be provided with a threaded hole matched with the locking bolt. After the transmission rod 206 is finished adjusting the position of the clamping member, the locking bolt is threadedly connected to the mounting bracket 209 and abutted against the transmission rod 206 to prevent The transmission rod 206 rotates. In some other embodiments, the transmission rod 206 can be provided with a plurality of through holes for the locking member 208 to pass through. At this time, the locking member 208 can be configured as a pin shaft or a pin, passing through the transmission rod 206 and the mounting bracket 209 and Connect the two together to stop the transmission rod 206 from continuing to rotate. In other possible embodiments, the locking member may also be a lock buckle, a lock tongue, a lock pliers, a lock hook and other structures capable of locking the transmission rod or the adjustment disc and other related components.

As an embodiment, in order to stably clamp the door wheel, further, there may be four connecting rods 202 arranged at equal intervals along the circumference of the unfolding disk 201, and four guide grooves 203 may be arranged at equal intervals around the unfolding disk 201 , the clip can be four, the main body 1 can be a rectangular boxed structure, the unfolding plate 201, the connecting rod 202 and the guide groove 203 can be accommodated in the rectangular boxed structure and the four side walls are respectively formed with extension rods 204 Telescopic telescopic hole 11. Therefore, the characteristics and space of the rectangular structure can be fully utilized and stable clamping of the door wheel can be realized at the same time.

Wherein, the number of the connecting rod 202, the guide groove 203 and the clamping parts corresponds one by one, that is, the number of the connecting rod 202, the guiding groove 203 and the clamping parts can be two, three or five, etc., correspondingly, the main body 1 can also be configured in a circular pie shape, or according to the number of connecting rods 202, guide grooves 203, and clamping pieces, or in a polygonal box shape, which is not specifically limited in the present disclosure.

As an embodiment of a clamping rod structure, the clamping rod 205 can be arranged perpendicular to the extension rod 204 and the clamping assembly 210 can be arranged away from the end of the extension rod 204, and a plurality of clamping rods 205 can extend in the same direction and be parallel to each other, The clamping assembly 210 may include a first clamping arm 2101 and a second clamping arm 2102 respectively perpendicular to the clamping rod 205, at least one of the first clamping arm 2101 and the second clamping arm 2102 may be relative to the clamping arm 2101. The holding rod 205 rotates, and a clamping space for clamping the valve door wheel 4 is formed between the two, and the clamping space has an outward opening away from the clamping rod 205, the first clamping arm 2101 and the second clamping arm A clamping bolt 2103 for closing the opening is connected between the arms 2102. In this way, only the clamping bolt 2103 needs to be opened, and the valve wheel 4 is placed between the first clamping arm 2101 and the second clamping arm 2102 from inside to outside. In the formed clamping space, and by operating the clamping bolt 2103 located outside the gate wheel, the clamping of the valve gate wheel 4 can be efficiently and quickly completed.

In a specific embodiment provided by the present disclosure, as shown in FIG. 5 , the driving structure 3 may include a hexagonal column protruding from the main body 1 at the second side, and the hexagonal column is arranged coaxially along the own axis of the main body 1 for insertion. In the hexagonal socket of the electric tool 5, in some other embodiments, the driving structure 3 may also include a hexagonal counterbore opened on the second side of the main body 1, so that only the electric tool 5 needs to be connected to the driving structure 3 during work. Together, the opening electric tool 5 drives the main body 1 to rotate along its own axis through the driving structure 3 to complete the opening and closing of the valve.

On the basis of the above solution, as shown in FIG. 1, the present disclosure also provides a valve opening and closing assembly, including an electric tool 5 and the above-mentioned valve opening and closing tooling, the electric tool 5 is detachably connected with the driving structure 3, Wherein, the electric tool 5 can be a hand-held electric wrench.

To sum up, in the specific embodiment provided by the present disclosure, referring to Fig. 1 to Fig. 8, when the valve needs to be opened and closed, firstly, according to the specification and size of the valve wheel 4, turn the adjustment dial 207 to Control the position of the clamping assembly 210, open the clamping bolt 2103, place the valve door wheel 4 in the clamping space formed by the first clamping arm 2101 and the second clamping arm 2102, and lock the clamping bolt 2103 to complete the pairing. Clamping of the valve door wheel 4; secondly, the locking member 208 passes through the mounting bracket 209 and abuts against the transmission rod 206 to prevent the transmission rod 206 from continuing to rotate, and the position of the clamping assembly 210 is fixed; finally, the power tool 5 is connected with the main body 1, and the electric tool 5 is started, and the electric tool 5 drives the main body 1 and then drives the valve door wheel 4 to rotate rapidly around its own axis to complete the opening and closing of the valve.

The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure. These simple modifications all belong to the protection scope of the present disclosure.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner if there is no contradiction. The combination method will not be described separately.

In addition, various implementations of the present disclosure can be combined arbitrarily, as long as they do not violate the idea of the present disclosure, they should also be regarded as the content disclosed in the present disclosure.

Claims (10)

1. The utility model provides a frock is opened and close to valve which characterized in that, frock is opened and close to valve includes:

a body having opposing first and second sides,

a clamping structure disposed on a first side of the body and including a plurality of clamping members for clamping a valve gate wheel together, at least one of the clamping members being position adjustably connected to the body, an

The driving structure is arranged on the second side of the main body and is used for being detachably connected with the electric tool so as to drive the main body to rotate around the axis of the main body.

2. The valve opening and closing tool according to claim 1, wherein the plurality of clamping members are respectively connected to the main body in a position-adjustable manner and are circumferentially spaced apart, the clamping structure further comprises an adjusting mechanism and a locking mechanism, the adjusting mechanism is in transmission connection with the plurality of clamping members respectively to synchronously adjust the positions of the plurality of clamping members relative to the main body, and the locking mechanism is used for unlocking the adjusting mechanism to lock the plurality of clamping members at the current position.

3. The tool for opening and closing the valve according to claim 2, wherein the adjusting mechanism comprises a deployment disc, a connecting rod and a guide groove, each clamping member comprises a deployment rod and a clamping rod located at an outer end of the deployment rod, the clamping rods are used for clamping the valve door wheel together along the circumferential direction, the deployment disc is rotatably arranged on the main body around a self axis of the deployment disc, the guide groove is fixed on the main body and extends in a direction parallel to a tangential direction of the self axis of the deployment disc, the deployment rod is slidably connected to the guide groove, one end of the connecting rod is fixed on the deployment disc and extends outwards along a radial direction of the self axis of the deployment disc, and the other end of the connecting rod is slidably hinged to an inner end of the deployment rod so that the deployment rod extends or retracts relative to the main body when the deployment disc rotates.

4. The valve opening and closing tool according to claim 3, wherein a radially extending sliding groove is formed in the connecting rod, and a pin shaft is fixed to the extending rod and slidably received in the sliding groove and rotatably arranged relative to the sliding groove.

5. The tool for opening and closing the valve according to claim 3, wherein the body is formed with an inner cavity for accommodating the unfolding disc, the connecting rod and the guide groove, the adjusting mechanism comprises a transmission rod extending outwards from the unfolding disc out of the inner cavity, an adjusting disc is fixed at the outer end of the transmission rod, the adjusting disc, the transmission rod and the unfolding disc are coaxially arranged, and the locking mechanism comprises a locking piece which can be releasably abutted against the outer wall of the transmission rod.

6. The tool of claim 5, wherein the locking mechanism comprises a mounting bracket fixed to an outer wall of the main body, the mounting bracket is disposed around the drive rod, and the locking member comprises a plurality of locking bolts extending through the mounting bracket and disposed radially of the drive rod.

7. The valve opening and closing tool according to any one of claims 3 to 6, wherein the number of the connecting rods is four, the connecting rods are arranged at equal intervals along the circumferential direction of the unfolding disc, the number of the guide grooves is four, the guide grooves are arranged at equal intervals around the unfolding disc, the number of the clamping pieces is four, the main body is of a rectangular box structure, the unfolding disc, the connecting rods and the guide grooves are accommodated in the rectangular box structure, and telescopic holes for the stretching rods to stretch are formed in four side walls of the rectangular box structure respectively.

8. The valve opening and closing tool according to claim 3, wherein the clamping rods are arranged perpendicular to the extension rods and are far away from the ends of the extension rods, the clamping rods extend in the same direction and are parallel to each other, the clamping assembly comprises a first clamping arm and a second clamping arm which are perpendicular to the clamping rods respectively, at least one of the first clamping arm and the second clamping arm can rotate relative to the clamping rods, a clamping space used for clamping the valve wheel is formed between the first clamping arm and the second clamping arm, the clamping space is provided with an opening far away from the clamping rods, and a clamping bolt used for closing the opening is connected between the first clamping arm and the second clamping arm.

9. The valve opening and closing tool of claim 1, wherein the drive structure includes a hex post projecting from the body on the second side, the hex post being disposed coaxially with the body axis for insertion into a hex socket of the power tool.

10. A valve opening and closing assembly, characterized by comprising an electric tool and the valve opening and closing tool according to any one of claims 1 to 9, wherein the electric tool is detachably connected with the driving structure.

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