CN212297871U

CN212297871U - Valve rod extension piece

Info

Publication number: CN212297871U
Application number: CN202020818544.XU
Authority: CN
Inventors: 刘全; 张友明
Original assignee: Sichuan Floway Fluid Control Equipment Co ltd
Current assignee: Sichuan Floway Fluid Control Equipment Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-01-05
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses a valve rod extension piece, including transmission cable, hand wheel, connecting piece, cable cover, driving medium, the transmission cable is flexible structure, the connecting piece with the one end of transmission cable is connected, the hand wheel with the connecting piece is connected, the driving medium with the other end of transmission cable is connected, the driving medium is connected with the valve rod of valve, the transmission cable is used for with the torque transmission of hand wheel to the valve rod of valve, make the valve rod rotate, open and close the valve; the cable sleeve is sleeved outside the side wall of the transmission cable; when the valve rod of the valve is extended, the hand wheel is connected with the transmission cable, the transmission cable is connected with the valve rod, and the transmission cable is of a flexible structure and can be bent into various shapes, so that the transmission cable is conveniently led out from the gap of the pipeline.

Description

Valve rod extension piece

Technical Field

The utility model relates to a valve field is a valve rod extension particularly.

Background

The valve is a control part in a pipeline fluid conveying system, is used for changing the section of a passage and the flowing direction of a medium, and has the functions of diversion, cut-off, throttling, non-return, flow splitting, overflow pressure relief and the like. Valves used for fluid control range from the simplest shut-off valves to the various valves used in extremely complex autonomous systems, ranging in variety and specification from the very tiny instrument valves up to industrial pipeline valves with nominal diameters of up to 10 m. The valve can be used for controlling the flow of various fluids such as water, steam, oil products, gas, mud, various corrosive media, liquid metal, radioactive fluid and the like, and the valve makes the opening and closing piece do lifting, sliding, swinging or rotating motion by a driving or automatic mechanism, so that the size of the flow passage area is changed to realize the control function.

In the prior art, the valve can be often installed in water or surrounded by a complicated pipeline, so that a hand wheel of the valve is located in a place which is difficult to contact, a user does not conveniently open and close the valve, and the valve needs to enter the water or rotate the hand wheel of the valve by other tools to open or close the valve when the valve needs to be opened and closed.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the present invention is directed to: the valve rod extension piece is provided, a valve rod can be extended, and the position of a hand wheel can be flexibly arranged.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

a valve rod extension piece comprises a transmission cable, a hand wheel, a connecting piece, a cable sleeve and a transmission piece, wherein the transmission cable is of a flexible structure, the connecting piece is connected with one end of the transmission cable, the hand wheel is connected with the connecting piece, the transmission piece is connected with the other end of the transmission cable, the transmission piece is connected with a valve rod of a valve, and the transmission cable is used for transmitting the torque of the hand wheel to the valve rod of the valve, so that the valve rod rotates to open and close the valve;

the cable sleeve is sleeved outside the side wall of the transmission cable.

Further, the transmission cable is a steel wire rope.

Further, the steel wire rope is formed by winding a plurality of steel wires.

Further, the transmission cable is an iron chain.

Furthermore, the cable sleeve is composed of a plurality of sockets, the sockets are of hollow structures with two unsealed ends, the end heads of the two ends are of arc-shaped structures, adjacent sockets are inserted into the other socket through the arc-shaped end head of one socket to be connected, and in the adjacent sockets, the outer side wall of the end head of one socket is in sliding fit with the inner side wall of the end head of the other socket.

Further, the connecting piece includes the casing, pushes away crowded board, spacing bolt, the hand wheel with the casing is connected, push away the vertical setting of crowded board, it sets up partially at least in the casing, be provided with on the casing with the screw thread through-hole of spacing bolt adaptation, spacing bolt with the casing pass through behind the threaded connection with it rotates to push away the crowded board and connects, it keeps away from to push away the board the interval is provided with a plurality of protruding A on the terminal surface of spacing bolt, on the casing inside wall with protruding A is provided with a plurality of protruding B relatively.

Further, the driving medium includes a plurality of planetary gears, sun gear, mounting disc, interior ring gear, planetary gear with the sun gear meshing, planetary gear with interior ring gear meshing, planetary gear with the mounting disc is connected through the pivot, sun gear with the one end of transmission cable is connected, interior ring gear with the valve rod is connected.

Furthermore, a hoop is further arranged on the cable sleeve.

Compared with the prior art, the utility model, following beneficial effect has:

when the valve rod of extension valve, be connected hand wheel and transmission cable, the transmission cable is connected with the valve rod, when needing to open or close the valve, rotates the hand wheel, the hand wheel drives the transmission cable is rotatory, the transmission cable with torque transmission extremely the purpose of valve rod, realization opening or close the valve, because the transmission cable is flexible structure, its flexible becomes various shapes, conveniently draws forth from the pipe clearance within a definite time.

Drawings

FIG. 1 is a schematic view of an extension of a valve stem according to example 1;

FIG. 2 is a view showing the fitting structure of a cable cover and a transmission cable;

FIG. 3 is a schematic illustration of a hub connection;

FIG. 4 is a view of the connector structure;

FIG. 5 is a view showing the structure of a transmission member;

fig. 6 is a schematic view of the valve stem extension of example 2.

List of reference numerals

1-handwheel, 2-connecting piece, 3-cable sleeve, 4-steel cable, 5-transmission piece, 6-valve, 7-hoop, 8-valve rod, 9-iron chain, 201-protrusion B, 202-limit bolt, 203-extrusion plate, 204-shell, 301-socket, 501-sun gear, 502-planet gear, 503-internal gear ring, 504-mounting disk.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.

Example 1

As shown in fig. 1 to 5, a valve rod extension piece includes a transmission cable, a hand wheel 1, a connecting piece 2, a cable sleeve 3, and a transmission piece 5, where the transmission cable is of a flexible structure, the connecting piece 2 is connected to one end of the transmission cable, the hand wheel 1 is connected to the connecting piece 2, the transmission piece 5 is connected to the other end of the transmission cable, the transmission piece 5 is connected to a valve rod 8 of a valve 6, and the transmission cable is used to transmit a torque of the hand wheel 1 to the valve rod 8 of the valve 6, so that the valve rod 8 rotates to open and close the valve 6;

the cable sleeve 3 is sleeved outside the side wall of the transmission cable.

The utility model discloses an operating principle does, when the valve rod 8 of valve 6 is prolonged to needs, is connected hand wheel 1 and transmission cable, and the transmission cable is connected with valve rod 8, and when needing to open or close valve 6, it is rotatory hand wheel 1, hand wheel 1 drives the transmission cable is rotatory, the transmission cable with the torque transmission extremely valve rod 8 realizes opening or closes the purpose of valve 6, because the transmission cable is flexible construction, makes hand wheel 1 can set up the position in a flexible way.

The cable sleeve 3 is used for limiting the transmission cable and preventing the transmission cable from winding and twisting under the action of the torque of the hand wheel 1.

Further, the transmission cable is a steel wire rope 4. The utility model discloses in, wire rope 4 can be formed by the crisscross winding of stranded steel wire, and in the same direction as around wire rope 4 probably because torsion and lead to the winding relation between the steel wire to be destroyed at transmission in-process, therefore adopt crisscross winding wire rope 4, no matter corotation or just can not lead to wire rope 4 disintegration in the contrary direction of hand wheel 1.

Further, the grommet 3 is composed of a plurality of sockets 301, the sockets 301 are hollow structures with two unsealed ends, the ends of the two ends are arc-shaped structures, the adjacent sockets 301 are inserted into the other socket 301 through the arc-shaped end of one socket 301 for internal connection, and in the adjacent sockets 301, the outer side wall of the end of one socket 301 is in sliding fit with the inner side wall of the end of the other socket 301. The utility model discloses in, socket 301 can adopt stainless steel material to make, when installation socket 301, can extrude socket 301 center gently with one of them socket 301's end, insert another socket 301's end afterwards with its end in, because stainless steel has certain elasticity under the spring action of socket 301 self, circular-arc end between the adjacent socket 301 closely laminates, socket 301's circular-arc end makes adjacent socket 301 can have certain angular rotation, keeps under the prerequisite of laminating at socket 301's circular-arc end, and socket 301 is rotatory to the arbitrary angle at this within range, makes by socket 3 that socket 301 constitutes can change the shape in a flexible way in order to adapt to the shape of drive cable.

Further, the connecting piece 2 includes casing 204, pushing plate 203, limit bolt 202, hand wheel 1 with the casing 204 is connected, pushing plate 203 is vertical to be set up, and it sets up partially at least in the casing 204, be provided with on the casing 204 with the screw thread through-hole of limit bolt 202 adaptation, limit bolt 202 with the casing 204 through threaded connection back with pushing plate 203 rotates and is connected, pushing plate 203 keeps away from the interval is provided with a plurality of archs A on limit bolt 202's the terminal surface, on the casing 204 inside wall with protruding A is provided with a plurality of archs B201 relatively.

When hand wheel 1 with when the driving cable is connected, will the one end of driving cable is inserted in the casing 204, press from both sides and establish the protruding A of pushing plate 203 between the protruding B201 of casing 204, screw up afterwards limit bolt 202, the interval between protruding A, protruding B201 diminishes, will gradually the driving cable presss from both sides tightly, protruding A, protruding B201 multiplicable casing 204, pushing plate 203 with frictional force between the driving cable, the driving cable can press from both sides more firmly and establish in the casing 204.

Further, the transmission member 5 includes a plurality of planet gears 502, a sun gear 501, a mounting plate 504, and an inner ring gear 503, the planet gears 502 are engaged with the sun gear 501, the planet gears 502 are engaged with the inner ring gear 503, the planet gears 502 are connected with the mounting plate 504 through a rotating shaft, the sun gear 501 is connected with one end of the transmission cable, and the inner ring gear 503 is connected with the valve stem 8.

When the transmission cable rotates, the sun gear 501 is driven by the transmission cable to rotate, then the sun gear 501 drives the inner toothed ring 503 to rotate, the valve rod 8 is connected with the end face of the inner toothed ring 503, and the torque required for driving the valve rod 8 is reduced because the transmission ratio of the transmission piece 5 is greater than one.

Further, a clamp 7 is further arranged on the cable sleeve 3. The utility model discloses in, clamp 7 with cable cover 3 can be the rotation connection, through setting up clamp 7, can with cable cover 3 is fixed on the lateral wall of pipeline for example, do hand wheel 1 provides the support.

Example 2

As shown in fig. 6, the transmission cable is an iron chain 9, which is different from embodiment 1. The iron chain 9 is buckled mutually by a plurality of chain links and forms, rotates during the iron chain 9 because the spacing of chain link can with the torque transmission of hand wheel 1 is to valve rod 8 of valve 6, compares in wire rope 4, the 9 transmission torque of iron chain are more stable.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the embodiments in the above description, and the technical concept of the present invention can be within the scope of the present invention, and can be modified to various simple modifications, and these simple modifications all belong to the protection scope of the present invention. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features. In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. The valve rod extension piece is characterized by comprising a transmission cable, a hand wheel (1), a connecting piece (2), a cable sleeve (3) and a transmission piece (5), wherein the transmission cable is of a flexible structure, the connecting piece (2) is connected with one end of the transmission cable, the hand wheel (1) is connected with the connecting piece (2), the transmission piece (5) is connected with the other end of the transmission cable, the transmission piece (5) is connected with a valve rod (8) of a valve (6), and the transmission cable is used for transmitting the torque of the hand wheel (1) to the valve rod (8) of the valve (6) to enable the valve rod (8) to rotate and open and close the valve (6);

the cable sleeve (3) is sleeved outside the side wall of the transmission cable.

2. Valve stem extension according to claim 1, wherein the transmission cable is a steel cable (4).

3. Valve stem extension according to claim 2, wherein the steel cable (4) is wound from a plurality of steel wires.

4. Valve stem extension according to claim 1, wherein the transmission cable is an iron chain (9).

5. The valve rod extension piece according to claim 1, characterized in that the cable sleeve (3) is composed of a plurality of sockets (301), the sockets (301) are hollow structures with two unsealed ends, the ends of the two ends are arc-shaped structures, the adjacent sockets (301) are inserted into the other sockets (301) through the arc-shaped ends of one socket (301) to be connected, and the outer side wall of the end of one socket (301) in the adjacent sockets (301) is in sliding fit with the inner side wall of the end of the other socket (301).

6. The valve rod extension piece of claim 1, wherein the connecting piece (2) comprises a housing (204), a pushing plate (203) and a limiting bolt (202), the handwheel (1) is connected with the housing (204), the pushing plate (203) is vertically arranged and at least partially arranged in the housing (204), a threaded through hole matched with the limiting bolt (202) is formed in the housing (204), the limiting bolt (202) is connected with the housing (204) through threads and then is rotatably connected with the pushing plate (203), a plurality of protrusions A are arranged on the end surface of the pushing plate (203) far away from the limiting bolt (202) at intervals, and a plurality of protrusions B (201) are arranged on the inner side wall of the housing (204) opposite to the protrusions A.

7. Valve stem extension according to claim 1, wherein the transmission member (5) comprises a plurality of planet gears (502), a sun gear (501), a mounting disc (504), and an inner toothed ring (503), wherein the planet gears (502) are engaged with the sun gear (501), the planet gears (502) are engaged with the inner toothed ring (503), the planet gears (502) are connected with the mounting disc (504) through a rotating shaft, the sun gear (501) is connected with one end of the transmission cable, and the inner toothed ring (503) is connected with the valve stem (8).

8. Valve stem extension according to claim 1, characterized in that a clip (7) is also provided on the cable sleeve (3).