Valve positioner

Abstract

The utility model discloses a valve positioner which comprises a valve, a positioner body and a connecting pipe, a plurality of mounting holes are respectively formed in the surface of the valve, the positioner body is fixedly mounted on the surface of the valve, a plurality of connectors communicated with branch pipes are formed in the valve, each connector is connected with an oil pipe, and the connecting pipe is connected with the valve. And the interior of the mounting hole is in threaded connection with the connecting pipe. The connecting pipe is reasonable in structural design, the mounting holes are adopted for mounting the connecting pipe, mounting of all valves can be achieved, effective sealing of the connecting positions is guaranteed, the inner sealing ring is extruded and attached when pressure of an oil way changes in the mounting holes, the sealing performance of the mounting position can be guaranteed, and the leakage problem is avoided; further sealing of the connecting pipe and the valve is achieved by arranging the fixing ring, air is prevented from entering, meanwhile, the connecting pipe installed in a threaded mode is extruded and limited through the screw, the loosening problem caused by long-time use is avoided, and the stable performance of the connecting position is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve application technical field, concretely is a valve positioner. BACKGROUND

[0002] The valve positioner is the key accessory of the regulating valve, is used for improving the control precision and response speed of regulating valve. The valve connecting structure part on the existing valve positioner, usually connecting valve block is used for the pipeline or valve of oil line transmission mostly adopts the threaded connection mode, and the sealing failure of corresponding communication structure is caused by the leakage of easy occurrence, especially the loose problem of connection part appears in the frequent change of infusion pressure. CONTENT OF UTILITY MODEL

[0003] The utility model discloses a valve positioner can be provided to solve the above -mentioned problem.

[0004] The utility model discloses a valve positioner through following technical scheme to realize above -mentioned purpose, including valve, positioner body and connecting pipe, valve surface sets up a plurality of mounting holes respectively, valve surface fixedly installed with positioner body, valve sets up a plurality of interfaces with branch pipe intercommunication, and every interface is connected with oil pipe, the inside of mounting hole is connected with connecting pipe screw, the end of connecting pipe sets up recess, and recess inside fits and is connected with inner seal ring, connecting pipe surface fixedly connected with fixed ring, the edge of fixed ring is connected with screw thread, the surface of connecting pipe swing sleeve joint has outer seal ring, and outer seal ring is connected with valve side wall, between mounting hole, through infusion pipeline intercommunication, infusion pipeline is connected with a plurality of branch pipes, and infusion pipeline is located at the edge position of mounting hole.

[0005] Preferably, the connecting pipe surface is provided with a recess of annular structure, the two inner side walls of the recess are inclined structures, and the inner seal ring is fitted and sleeved with the recess.

[0006] Preferably, the connecting pipe surface is provided with an external thread, the external thread is located between the fixed ring and the recess, the connecting pipe is fixedly connected with the valve through the external thread, and the valve side wall is in contact with the screw.

[0007] Preferably, the diameters of the two ends of the connecting pipe are smaller than the diameter of the external thread, and the inner wall of the mounting hole is connected with the inner seal ring.

[0008] Preferably, the valve is provided with a plurality of branch pipes inside, and one of the branch pipes is in communication with the inside of the positioner body.

[0009] Compared with the prior art, the valve has the advantages that: the installation hole is used for connecting the installation of the connecting pipe, the installation of the valve is realized, and effective sealing of the connecting position is ensured; the installation hole is used for extruding and adhering the inner sealing ring when pressure change occurs in the oil circuit, the sealing performance of the installation position is ensured, and the leakage problem is avoided; the fixed ring is used for further sealing of the connecting pipe and the valve, air is prevented from entering, the screw is used for extruding and limiting the threaded connecting pipe, the loosening problem caused by long-time use is avoided, and the stability of the connecting position is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0011] Fig. 1 It is a front view of the overall structure of the present application.

[0012] Fig. 2 It is a top view of the overall structure of the present application.

[0013] Fig. 3 It is a front view of the connecting structure of the connecting pipe of the present application.

[0014] In the figure: 1, valve, 2, installation hole, 3, infusion pipeline, 4, branch pipe, 5, interface, 6, positioner body, 7, connecting pipe, 8, fixed ring, 9, outer sealing ring, 10, groove, 11, inner sealing ring, 12, external thread, 13, screw. DETAILED DESCRIPTION

[0015] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings of the embodiments of the present application. Obviously, the following described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0016] The technical scheme of the present application will be further described in combination with the drawings and specific embodiments.

[0017] In the description of the utility model, need understanding is, the orientation or position relation indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0018] Please refer to Figs. 1-3 As shown in the figure, a valve positioner, comprising a valve 1, a positioner body 6 and a connecting pipe 7, the valve 1 surface is fixedly installed with the positioner body 6, the valve 1 is provided with a plurality of interfaces 5 communicated with branch pipes 4, and each interface 5 is connected with an oil pipe, the valve 1 surface is provided with a plurality of mounting holes 2 respectively, the mounting hole 2 is internally threadedly connected with the connecting pipe 7, the connecting pipe 7 end is provided with a groove 10, and the groove 10 is internally embedded with an inner sealing ring 11, the connecting pipe 7 surface is fixedly connected with a fixing ring 8, the fixing ring 8 edge is threadedly connected with a screw 13, the connecting pipe 7 surface is movably sleeved with an outer sealing ring 9, and the outer sealing ring 9 is connected with the valve 1 side wall, the mounting hole 2 is communicated through a transfusion pipeline 3, the transfusion pipeline 3 is communicated with a plurality of branch pipes 4, and the transfusion pipeline 3 is located at the edge position of the mounting hole 2.

[0019] Further, the connecting pipe 7 surface is provided with the annular groove 10, both inner side walls of the groove 10 are inclined structures, and the inner sealing ring 11 is embedded and sleeved with the groove 10.

[0020] Further, the connecting pipe 7 surface is provided with an external thread 12, the external thread 12 is located between the fixing ring 8 and the groove 10, the connecting pipe 7 is threadedly fixed with the valve 1 through the external thread 12, and the valve 1 side wall contacts the screw 13.

[0021] Further, the diameter of both ends of the connecting pipe 7 is less than the diameter of the external thread 12, and the inner wall of the mounting hole 2 is connected with the inner sealing ring 11.

[0022] Further, the valve 1 is internally provided with a plurality of branch pipes 4, one of the branch pipes 4 is communicated with the inner positioner body 6.

[0023] The utility model discloses a valve 1 is connected to the control of connecting pipe 7, and through the pipeline connected at the interface 5, when the hydraulic pressure is produced in the mounting hole 2, makes it fill mounting hole 2 and push the inner sealing ring 11 and resist the recess 10 side wall, makes the inner sealing ring 11 produce deformation and extrude the inner wall of mounting hole 2, realizes effective sealing, when forming the negative pressure, the hydraulic pressure in mounting hole 2 drives the inner sealing ring 11 and resists the recess 10 the other side, and then realizes extrusion sealing, and the pipe line 3 in infusion is entered into the positioner body 6 through the branch pipe 4, plays the buffering effect.

[0024] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the essential elements of the claims should be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims.

[0025] The above-described embodiments are only used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A valve positioner, characterized in that: The system includes a valve (1), a positioner body (6), and a connecting pipe (7). The positioner body (6) is fixedly mounted on the surface of the valve (1). The valve (1) has several interfaces (5) that communicate with the branch pipe (4), and each interface (5) is connected to an oil pipe. The surface of the valve (1) has several mounting holes (2), and the interior of the mounting holes (2) is threadedly connected to the connecting pipe (7). The end of the connecting pipe (7) has a groove (10), and the interior of the groove (10) is... An inner sealing ring (11) is fitted into the connecting tube (7), and a fixing ring (8) is fixedly connected to the surface of the connecting tube (7). The edge of the fixing ring (8) is threadedly connected to a screw (13). An outer sealing ring (9) is movably fitted onto the surface of the connecting tube (7), and the outer sealing ring (9) is fitted into the side wall of the valve (1). The mounting holes (2) are connected to each other through an infusion pipeline (3). The infusion pipeline (3) is connected to several branch pipes (4), and the infusion pipeline (3) is located at the edge of the mounting hole (2).

2. A valve positioner according to claim 1, characterized in that: The surface of the connecting pipe (7) is provided with an annular groove (10), the two inner walls of the groove (10) are inclined, and the inner sealing ring (11) is fitted and sleeved inside the groove (10).

3. A valve positioner according to claim 1, characterized in that: The connecting pipe (7) has an external thread (12) on its surface. The external thread (12) is located between the fixing ring (8) and the groove (10). The connecting pipe (7) is threadedly connected to the valve (1) through the external thread (12), and the valve (1) has a contact screw (13) on its side wall.

4. A valve positioner according to claim 1, characterized in that: The diameters at both ends of the connecting pipe (7) are smaller than the diameter of the external thread (12), and the inner wall of the mounting hole (2) is fitted and connected to the inner sealing ring (11).

5. A valve positioner according to claim 1, characterized in that: The valve (1) has several branch pipes (4) inside, one of which is connected to the inside of the positioner body (6).

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