Valve device

Abstract

According to the valve device, after a valve is used for a long time, a valve sleeve and a valve body in the valve are prone to being rusted and stuck. An end cover and a valve body of the valve can be separated, so that a valve sleeve in the valve body is exposed. A support in the valve device is connected with a valve body, and an avoiding groove in the support can be opposite to a valve sleeve in a valve cavity of the valve body. The rod portion of the connecting piece movably penetrates through the support in the axial direction of the rod portion, one end of the rod portion is inserted into the receding groove and connected with the connecting portion, the rod portion can be moved to enable the connecting portion to move to be connected with the valve sleeve, and the valve sleeve can be moved by moving the rod portion. A cylinder seat of the hydraulic cylinder is connected with the support, and a piston rod of the hydraulic cylinder is coaxially connected with the other end of the rod part. The piston rod moves in the axial direction of the piston rod, the valve sleeve can be driven to be pulled out relative to the valve body, separation is completed, operation is convenient, the valve sleeve can be cleaned and maintained after being separated, the valve does not need to be wholly replaced, maintenance cost is low, and the technical problems that a descaling valve is inconvenient to disassemble and assemble and high in maintenance cost are solved to a certain degree.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of valve device maintenance, and particularly relates to a valve device. BACKGROUND

[0002] The valve is applied in a high-pressure descaling process. The valve needs to be frequently opened and closed in the working process, and is subjected to the impact of high-pressure water for a long time. Therefore, the valve sleeve needs to be frequently disassembled and maintained.

[0003] At present, for the valve with rust, a simple tool is used to cooperate with a tool hammer to separate the valve sleeve and the valve body. However, this method is inconvenient to operate, and the valve sleeve is easily damaged due to improper force, or the valve sleeve is stuck relative to the valve body. In this case, the whole valve needs to be replaced, which is inconvenient to disassemble and has high maintenance cost. CONTENT OF THE UTILITY MODEL

[0004] The application aims to at least solve the technical problems of inconvenient disassembly and high maintenance cost of the descaling valve to some extent. To this end, the application provides a valve device.

[0005] The application provides a valve device, which comprises:

[0006] The valve comprises a valve body, an end cover, a valve sleeve and a valve core. The valve body is provided with a valve cavity. The end cover is detachably connected with the valve body and seals the valve cavity. The valve sleeve is arranged in the valve cavity and sealingly matches with the valve body. The valve core is connected with the valve sleeve.

[0007] The bracket is used to be connected with the valve body and is provided with an avoiding groove.

[0008] The connecting piece is provided with a rod part and a connecting part. The rod part is movably arranged along the axial direction of the rod part and passes through the bracket. One end of the rod part is inserted into the avoiding groove and connected with the connecting part. The connecting part is used to be connected with the valve sleeve.

[0009] The hydraulic cylinder is connected with the bracket through the cylinder base, and the piston rod is coaxially connected with the other end of the rod part.

[0010] In some or certain embodiments, the first annular groove is coaxially arranged on one end of the piston rod which extends out of the cylinder base. The second annular groove is coaxially arranged on the other end of the rod part. The valve device further comprises:

[0011] The annular piece is sleeved with the hydraulic rod and the rod part, and the inner circumferential wall is provided with a first annular protrusion and a second annular protrusion. The first annular protrusion is coaxially inserted into the first annular groove. The second annular protrusion is coaxially inserted into the second annular groove.

[0012] In some or certain embodiments, the annular piece comprises:

[0013] Two arc-shaped parts, the two arc-shaped parts are opposite and detachably connected.

[0014] In some or certain embodiments, the outer peripheral wall of the ring-shaped part is provided with a flange.

[0015] In some or certain embodiments, the hydraulic cylinder comprises:

[0016] At least two transition rods are connected to the cylinder seat along the circumference of the piston rod, and two ends of each of the transition rods are connected to the cylinder seat and the support, respectively.

[0017] In some or certain embodiments, the two ends of the transition rod are welded to the cylinder seat and the support, respectively.

[0018] In some or certain embodiments, the end cover and the valve body are connected by bolts, and the support is provided with connecting holes corresponding to the bolts.

[0019] In some or certain embodiments, the support comprises a mounting part and two positioning parts located on both sides of the mounting part, respectively, the mounting part movably sleeving the rod part, and the mounting part being connected to the cylinder seat, the positioning parts being used for connecting to the valve body, and the avoiding groove being formed between the two positioning parts.

[0020] In some or certain embodiments, one end of the rod part is inserted into the connecting part and welded to the connecting part.

[0021] In some or certain embodiments, the connecting part is in the form of a flange, and the valve device further comprises:

[0022] A plurality of fasteners are spaced apart from each other and inserted into the connecting part and the valve sleeve.

[0023] According to one or more embodiments of the present application, the following beneficial effects are provided:

[0024] When the valve is used for a long time in a descaling process, for example, the sealing fit between the valve sleeve and the valve body is prone to rust and jam. At this time, the end cover of the valve can be separated from the valve body, and the valve sleeve in the valve body is exposed. Then the bracket in the valve device is connected with the valve body, the bracket plays the role of base, and the avoiding groove on the bracket can be opposite to the valve sleeve in the valve cavity of the valve body, which provides an avoiding space for the removal of the valve sleeve. The rod part of the connecting piece is movably inserted into the avoiding groove along the axial direction of the rod part, one end of the rod part is inserted into the avoiding groove and connected with the connecting part, and the movable rod part can move the connecting part to be connected with the valve sleeve. The valve sleeve can be moved by moving the rod part. The hydraulic cylinder in the valve device is connected with the bracket, so that the valve body, the bracket and the cylinder base form an integral whole, the piston rod of the hydraulic cylinder is coaxially connected with the other end of the rod part, and the piston rod, the rod part and the valve sleeve form an integral whole. The piston rod moves along the axial direction of the piston rod relative to the cylinder base, which can move the rod part along the axial direction of the rod part. The movement of the rod part can drive the valve sleeve to be extracted from the valve body to the avoiding groove, so as to separate the valve sleeve from the valve body. The operation is convenient, the separation of the valve sleeve from the valve body is easy to realize, the valve sleeve can be cleaned and maintained after being separated from the valve body, the valve does not need to be replaced as a whole, the maintenance cost is low, and the technical problems of inconvenient disassembly and high maintenance cost of the descaling valve are solved to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 A use state schematic diagram of a valve device in some embodiments or certain embodiments of the present application is shown.

[0027] Figure 2 A structure schematic diagram of a ring member in some embodiments or certain embodiments of the present application is shown.

[0028] Figure 3 A side view of an arc-shaped part in some embodiments or certain embodiments of the present application is shown.

[0029] Figure 4 A structure schematic diagram of a hydraulic cylinder in some embodiments or certain embodiments of the present application is shown.

[0030] Explanation of reference signs: 1, support; 11, avoiding groove; 12, mounting part; 13, positioning part; 14, connecting hole; 2, connecting piece; 21, rod part; 211, second annular groove; 22, connecting part; 3, hydraulic cylinder; 31, cylinder base; 311, cavity; 32, piston rod; 321, first annular groove; 33, piston; 34, transition rod; 4, fastener; 5, annular piece; 51, first annular protrusion; 52, second annular protrusion; 53, flange; 54, arc-shaped part; 10, valve; 101, valve body; 102, valve sleeve; 103, bolt. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative positional relationship, movement condition and the like between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0033] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0035] In the related art, most of the valves used in the descaling process need to be frequently maintained, and the valve core and the valve sleeve need to be removed. The cooperation between the valve sleeve and the valve body is usually tight. In order to resist the erosion of high-pressure water in the descaling process and the influence of impurities in the water, the valve sleeve and the valve body are prone to rust and jam, and are difficult to separate. If a simple tool is used in cooperation with a tool hammer to separate the valve sleeve and the valve body, the operation is inconvenient, and improper force is easy to cause damage to the valve sleeve or the valve sleeve to be stuck relative to the valve body, resulting in the need to replace the valve or replace the valve as a whole, greatly increasing the maintenance cost. There is a technical problem of inconvenient disassembly and high maintenance cost. The valve device provided by the embodiments of the present application can at least solve the above technical problems to some extent.

[0036] The present application will be described below with reference to the accompanying drawings:

[0037] Figure 1 The use state diagram of the valve device in some embodiments or certain embodiments of the present application is shown, referring to Figure 1 The embodiments of the present application provide a valve device, which comprises:

[0038] The valve 10 comprises a valve body 101, an end cover (not shown in the figure), a valve sleeve 102 and a valve core (not shown in the figure). The valve body 101 is provided with a valve cavity. The end cover is detachably connected with the valve body 101 and closes the valve cavity. The valve sleeve 102 is arranged in the valve cavity and sealingly cooperates with the valve body 101. The valve core is connected with the valve sleeve 102.

[0039] The bracket 1 is used for connecting with the valve body 101 and is provided with an avoiding groove 11.

[0040] The connecting piece 2 is provided with a rod part 21 and a connecting part 22. The rod part 21 movably passes through the bracket 1 along the axial direction of itself. One end of the rod part 21 is inserted into the avoiding groove 11 and connected with the connecting part 22. The connecting part 22 is used for connecting with the valve sleeve 102.

[0041] The hydraulic cylinder 3 is connected with the bracket 1 through a cylinder base 31, and a piston rod 32 is coaxially connected with the other end of the rod part 21.

[0042] When the valve 10 is used in a descaling process for example, the sealingly fitted valve sleeve 102 and valve body 101 of the valve 10 are prone to rust and jam after being used for a long time. At this time, the end cover of the valve 10 can be separated from the valve body 101 to expose the valve sleeve 102 in the valve body 101. Then the bracket 1 in the valve device is connected to the valve body 101, the bracket 1 serves as a base, and the avoiding groove 11 on the bracket 1 can be opposite to the valve sleeve 102 in the valve cavity of the valve body 101 to provide an avoiding space for the removal of the valve sleeve 102. The rod part 21 of the connecting piece 2 is movably inserted into the bracket 1 along the axial direction of the rod part 21, one end of the rod part 21 is inserted into the avoiding groove 11 and connected to the connecting part 22, the connecting part 22 can be moved to be connected to the valve sleeve 102 by moving the rod part 21, and then the valve sleeve 102 can be moved by moving the rod part 21. The hydraulic cylinder 3 in the valve device, the cylinder base 31 of the hydraulic cylinder 3 is connected to the bracket 1, the valve body 101, the bracket 1 and the cylinder base 31 form an integrated whole, the piston rod 32 of the hydraulic cylinder 3 is coaxially connected to the other end of the rod part 21, and the piston rod 32, the rod part 21 and the valve sleeve 102 can form an integrated whole. The piston rod 32 is moved along the axial direction of the piston rod 32 relative to the cylinder base 31, the rod part 21 is moved along the axial direction of the rod part 21, the rod part 21 is moved to pull out the valve sleeve 102 from the valve body 101 to the avoiding groove 11, the separation of the valve sleeve 102 and the valve body 101 is completed, the operation is convenient, the separation of the valve sleeve 102 and the valve body 101 is easy to realize, the valve sleeve 102 can be cleaned and maintained after being separated and then reinstalled into the valve body 101, the valve 10 does not need to be replaced as a whole, the maintenance cost is low, and the technical problems that the descaling valve is inconvenient to disassemble and maintain and the maintenance cost is high are solved to a certain extent.

[0043] It should be noted that, Figure 1 only one use state of the valve device is shown in the valve device, when the valve 10 does not need to be maintained, the bracket 1, the connecting piece 2 and other structures can be separated from the valve 10, and the valve 10 can normally use its own function. When the valve sleeve 102 cleaned and maintained is needed to be reinstalled into the valve body 101, the valve sleeve 102 to be installed is connected to the connecting part 22, the piston rod 32 is extended relative to the cylinder base 31 to the valve sleeve 102 in the valve body 101 to complete the cooperation, and the integrated installation is completed. The valve body 101 and the end cover can be detachably connected, and there is usually a gap, which is not easy to be removed relative to the sealing cooperation of the valve sleeve 102 and the valve body 101.

[0044] In some or certain embodiments, the valve 10 can be a balanced stop valve, including a valve body 101, an end cover, a valve sleeve 102 and a valve core, the valve body 101 is provided with upper and lower valve cavities, the end cover is detachably connected to the valve body 101 and seals the valve cavities, the valve sleeve 102 is arranged in the valve cavities and sealingly cooperates with the valve body 101, and the valve core is driven to move in the valve sleeve 102 by a valve rod to connect the upper and lower valve cavities, and the valve 10 can also be a descaling injection valve. When the valve sleeve 102 is stuck relative to the valve body 101, the valve sleeve 102 and the valve body 101 can be separated by the bracket 1, the connecting piece 2 and the hydraulic cylinder 3 for maintenance.

[0045] In some or certain embodiments, the valve cavity can be cylindrical, the valve sleeve 102 can be cylindrical and coaxially arranged in the valve cavity, and the axial direction of the rod portion 21 and the axial direction of the piston rod 32 can be arranged along the axial direction of the valve cavity. The valve sleeve 102 is relatively easy to extract from the valve body 101.

[0046] In some or certain embodiments, the piston rod 32 and the other end of the rod portion 21 can be detachably connected. The connection of the piston rod 32 and the rod portion 21 is facilitated, and the disassembly and assembly of the valve device as a whole are facilitated.

[0047] Figure 2 A structure diagram of a ring member in some or certain embodiments of the present application is shown, Figure 3 A side view of an arc-shaped portion in some or certain embodiments of the present application is shown, with reference to Figures 1 to 3 In some or certain embodiments, the end of the piston rod 32 extending out of the cylinder seat 31 is provided with a coaxial first annular groove 321, the other end of the rod portion 21 is provided with a coaxial second annular groove 211, and the valve device further comprises:

[0048] The ring member 5 is sleeved with the hydraulic rod and the rod portion 21, and the inner peripheral wall is provided with a first annular protrusion 51 and a second annular protrusion 52. The first annular protrusion 51 is coaxially inserted into the first annular groove 321, and the second annular protrusion 52 is coaxially inserted into the second annular groove 211.

[0049] The ring member 5 is sleeved with the hydraulic cylinder 3 and the rod portion 21, facilitating the connection of the hydraulic rod and the rod portion 21. The first annular protrusion 51 and the second annular protrusion 52 provided on the inner peripheral wall of the ring member 5 can be coaxially inserted into the first annular groove 321 at one end of the piston rod 32 and the second annular groove 211 of the rod portion 21, respectively. The structure is simple and helps to reduce the manufacturing cost. The ring member 5 can ensure the stability of the connection of the hydraulic rod and the rod portion 21, and also helps to improve the coaxiality of the piston rod 32 and the rod portion 21, so that the valve sleeve 102 can be stably extracted from the valve body 101 when the rod portion 21 moves.

[0050] In some or certain embodiments, the end of the piston rod 32 extending out of the cylinder seat 31 can be coaxially abutted with the other end of the rod portion 21, and the outer peripheral wall between the end surface of the piston rod 32 and the first annular groove 321 can be fitted with the inner peripheral wall of the ring member 5. The outer peripheral wall between the end surface of the other end of the rod portion 21 and the second annular groove 211 can be fitted with the inner peripheral wall of the ring member 5. The connection effect is better.

[0051] In some or certain embodiments, the ring member 5 can include two arc-shaped portions 54, which are opposite and detachably connected.

[0052] Two arc-shaped parts 54 oppositely and detachably form the ring-shaped part 5. The piston rod 32 can be extended to abut against the other end of the rod part 21, and then the two arc-shaped parts 54 are assembled with the piston rod 32 and the rod part 21, and finally the two arc-shaped parts 54 are connected to form the ring-shaped part 5 sleeved on the piston rod 32 and the rod part 21, facilitating assembly.

[0053] It should be noted that the central angles of the arc-shaped parts 54 can be 180°, and the inner circumferential walls of the two arc-shaped parts 54 are abutted to form the inner circumferential wall of the ring-shaped part 5.

[0054] In some or certain embodiments, the two arc-shaped parts 54 can be connected by screws, facilitating disassembly and assembly.

[0055] In some or certain embodiments, the outer circumferential wall of the ring-shaped part 5 is provided with a flange 53. The flange 53 can provide an operation space, facilitating assembly.

[0056] Figure 4 A structural schematic diagram of a hydraulic cylinder in some or certain embodiments of the present application is shown, referring to FIG. 1. Figure 1 、 4 In some or certain embodiments, the hydraulic cylinder 3 comprises:

[0057] At least two transition rods 34 are connected to the cylinder base 31 along the circumference of the piston rod 32, and the two ends of each transition rod 34 are connected to the cylinder base 31 and the bracket 1, respectively.

[0058] The at least two transition rods 34 connect the cylinder base 31 and the bracket 1, and the transition rod 34 can form a certain space between the cylinder base 31 and the bracket 1, so that the piston rod 32 and the rod part 21 of the connecting part 2 can have a longer moving distance, so that the valve sleeve 102 can move a longer distance relative to the valve body 101.

[0059] Figure 4 The piston 33 of the hydraulic cylinder 3 is also shown in FIG. 1. The cylinder base 31 is provided with a chamber 311, the piston 33 is in sealing cooperation with the chamber 311 and is slidable in the chamber 311, the piston 33 is connected and fixed with the piston rod 32, oil is introduced to one side of the piston 33, and the piston 33 and the piston rod 32 can be pushed to move.

[0060] In some or certain embodiments, the valve device can further comprise a liquid supply bottle (not shown in the figure) and a recovery tank (not shown in the figure). The liquid supply bottle and the recovery tank can be respectively communicated to the two sides of the piston 33 in the chamber 311, so as to drive the piston 33.

[0061] In some or certain embodiments, the two ends of the transition rod 34 are welded to the cylinder base 31 and the bracket 1, respectively, so as to strengthen the supporting capacity of the transition rod 34.

[0062] In some or certain embodiments, the end cover is connected with the valve body 101 through the bolt 103, and the bracket 1 is provided with a connecting hole 14 corresponding to the bolt 103.

[0063] The end cover is connected with the valve body 101 through the bolt 103, and the bracket 1 is provided with a connecting hole 14 corresponding to the bolt 103. After the end cover is separated from the valve body 101, the bolt 103 connecting the end cover and the valve body 101 can be inserted into the bracket 1 and the valve body 101 in sequence, so as to realize the connection of the bracket 1 and the valve body 101. It is convenient to disassemble and assemble, and the maintenance cost is low.

[0064] In some or certain embodiments, the bracket 1 includes a mounting portion 12 and two positioning portions 13 respectively located on both sides of the mounting portion 12. The mounting portion 12 movably sleeves the rod portion 21, and the mounting portion 12 is connected with the cylinder seat 31. The positioning portions 13 are used for connecting with the valve body 101, and the two positioning portions 13 form the avoiding groove 11 therebetween.

[0065] The bracket 1 adopts the above structure, which is simple in structure and convenient to manufacture. Meanwhile, the bracket 1 and the valve body 101 have a large operating space therebetween.

[0066] In some or certain embodiments, the bracket 1 can also be a cylindrical structure with one end closed. The inner hole of the bracket 1 forms the avoiding groove 11, and the open end of the bracket 1 is connected with the valve body 101. The rod portion 21 movably penetrates through the closed end of the bracket 1. The connection with the valve body 101 and the penetration of the rod portion 21 can also be realized.

[0067] In some or certain embodiments, one end of the rod portion 21 is inserted into the connecting portion 22 and is welded and fixed with the connecting portion 22.

[0068] The connecting end 211 of the rod portion 21 is inserted into the connecting portion 22 and is welded and fixed with the connecting portion 22, which is convenient for the split preparation of the connecting piece 2 and can also ensure the relative position accuracy of the rod portion 21 and the connecting portion 22.

[0069] In some or certain embodiments, the connecting portion 22 is in the form of a flange, and the valve device further includes:

[0070] A plurality of fasteners 4 are sequentially inserted into the connecting portion 22 and the valve sleeve 102 at intervals.

[0071] The connecting portion 22 is in the form of a flange, and the connecting portion 22 and the valve sleeve 102 can have a large connection contact area. The connecting portion 22 is connected to the valve sleeve 102 through the plurality of fasteners 4, so as to ensure the relative position of the valve sleeve 102 relative to the connecting portion 22. In the process of moving the rod portion 21 along the axial direction thereof, the valve sleeve 102 can move along a relatively fixed path and move out of the valve body 101, so as to reduce the situation that the valve sleeve 102 is stuck relative to the valve body 101, and facilitate the disassembly and assembly of the valve sleeve 102 and the valve body 101.

[0072] In some or certain embodiments, when the connecting portion 22 is a flange, the connecting end 211 can be inserted into the center hole 221 of the connecting portion 22, and then welded and fixed with the flange. The fastener 4 can be a connecting bolt or screw. The standard part does not need additional processing.

[0073] In some or certain embodiments, a cylindrical protrusion for being inserted into the valve sleeve 102 can also be arranged on the connecting portion 22. The connecting portion 22 and the valve sleeve 102 can be positioned, and the disassembly and assembly efficiency can be improved. In some or certain embodiments, the connecting portion 22 can also be arranged as a plate or block according to requirements.

[0074] In some or certain embodiments, a bolt hole 103 can also be arranged at one end of the valve sleeve 102 of the valve 10. The bolt hole 103 can be matched with the fastener 4 in the valve device. The connection and fastening between the connecting portion 22 and the valve sleeve 102 in the valve device can be facilitated.

[0075] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and integrate different embodiments or examples described in the present specification.

[0076] In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0077] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A valve device, characterized by The valve device comprises: a valve, which comprises a valve body, an end cover, a valve sleeve and a valve core, the valve body is provided with a valve cavity, the end cover is detachably connected with the valve body and seals the valve cavity, the valve sleeve is arranged in the valve cavity and sealingly cooperates with the valve body, and the valve core is connected with the valve sleeve; a bracket, which is used to be connected with the valve body and is provided with an avoiding slot; a connecting piece, which is provided with a rod part and a connecting part, the rod part is movably arranged along the axial direction of the rod part and penetrates through the bracket, one end of the rod part is inserted into the avoiding slot and connected with the connecting part, and the connecting part is used to be connected with the valve sleeve; a hydraulic cylinder, the cylinder base is connected with the bracket, and the piston rod is coaxially connected with the other end of the rod part.

2. The valve device of claim 1, wherein The other end of the piston rod, which protrudes from the cylinder base, is provided with a coaxial first annular groove, the other end of the rod part is provided with a coaxial second annular groove, and the valve device further comprises: an annular part, which is sleeved with the hydraulic rod and the rod part and is provided with a first annular protrusion and a second annular protrusion on the inner circumferential wall, the first annular protrusion is coaxially inserted into the first annular groove, and the second annular protrusion is coaxially inserted into the second annular groove.

3. The valve device of claim 2, wherein The annular part comprises: two arc-shaped parts, which are opposite to each other and are detachably connected.

4. The valve apparatus of claim 2, wherein The outer circumferential wall of the annular part is provided with a flange.

5. Valve device according to any one of claims 1 to 4, characterized in that The hydraulic cylinder comprises: at least two transition rods, which are connected with the cylinder base along the circumferential direction of the piston rod, and two ends of each transition rod are connected with the cylinder base and the bracket respectively.

6. The valve device of claim 5, wherein The two ends of the transition rod are welded with the cylinder base and the bracket respectively.

7. Valve device according to any one of claims 1-4, characterized in that The end cover and the valve body are connected by bolts, and the bracket is provided with connecting holes corresponding to the bolts.

8. Valve device according to any one of claims 1-4, characterized in that The bracket comprises a mounting part and two positioning parts located on both sides of the mounting part, the mounting part is movably sleeved with the rod part, the mounting part is connected with the cylinder base, the positioning parts are used to be connected with the valve body, and the avoiding slot is formed between the two positioning parts.

9. Valve device according to any one of claims 1-4, characterized in that One end of the rod part is inserted into the connecting part and welded with the connecting part.

10. The valve apparatus of claim 9, wherein The connecting part is in the form of a flange, and the valve device further comprises: a plurality of fasteners, which are spaced apart from each other and inserted into the connecting part and the valve sleeve.

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