CN205278424U

CN205278424U - Uninstallation is with small flow choke valve

Info

Publication number: CN205278424U
Application number: CN201520963090.4U
Authority: CN
Inventors: 严李荣; 卢卫平; 梁涛; 郭士滔; 谢诗; 李江伟
Original assignee: Liuzhou OVM Machinery Co Ltd
Current assignee: Liuzhou OVM Machinery Co Ltd
Priority date: 2015-11-27
Filing date: 2015-11-27
Publication date: 2016-06-01
Anticipated expiration: 2025-11-27

Abstract

The utility model provides an uninstallation is with small flow choke valve, includes handle, valve rod and valve piece, and the valve rod runs through the inner chamber of valve piece, has a sealing washer that is used for valve body and stem seal on valve body upper portion, and the handle handle passes through screw I and the valve rod is fixed links to each other, the valve rod is waney axis body, and its front end has the external screw thread, is provided with the internal thread on the oil inlet of valve piece and the inner chamber wall between the oil -out, interior screw -thread fit on valve rod front end external screw thread and the valve piece inner chamber wall forms minor clearance, under the user state, hydraulic oil gets into from the oil inlet of valve piece, through the small clearance that valve rod front end external screw thread and interior screw -thread fit on the valve piece inner chamber wall formed, flows from the oil -out of valve piece, big or small with the internal screw thread matching length L on the valve piece inner chamber wall through handle adjusting valve stem front end external screw thread, matching length L is short more, and the flow is big more, otherwise matching length L is long more, and the flow is more little. This uninstallation is with micrometeor choke valve simple structure, control range width, regulation precision height, convenient to use.

Description

A kind of unloading tiny flow quantity throttling valve

Technical field

The utility model relates to a kind of tiny flow quantity throttling valve, particularly a kind of unloading tiny flow quantity throttling valve.

Background technology

At present, when bridge jacking is constructed, it is necessary to equipment can carry out synchronous jacking and decline operation, and when synchronously declining, danger is higher, it is necessary to equipment heads on weight and slowly declines, if adopting hydraulicvalve such as equilibrium valve, reducing valve etc., then equipment cost is too high; For reducing costs, when ensureing jack-up construction safety, usually adopt tiny flow quantity throttling valve to carry out flow control, reach the effect that bridge steadily synchronously declines.

The throttling form of current tiny flow quantity is a lot, and adjustable only two kinds of forms: a kind of is that the degree of depth entering aperture by control tapered needle valve reaches and changes throttling cross section or throttling length to control fluid flow rate; Another kind is the length changing damper hole, reaches adjustment flow, and conventional structure for process damping slot on valve rod.

Application notification number is: CN203641541U, practical New Name is that " a kind of throttling valve regulated for tiny flow quantity " discloses and process damping slot on valve rod, the length of damping adjusting groove is carried out by the height of regulating valve stem, the cooperation length of the damping slot that this kind of structure only relies in regulation valve body on hole and valve rod carrys out the size of regulation output flow, its output flow changes greatly, regulation range is narrow, is not suitable for the adjustment of tiny flow quantity.

Summary of the invention

The purpose of this utility model is to provide a kind of unloading and uses micro-flow throttle valve, and this unloading is simple by micro-flow throttle valve structure, regulation range width, sharpness of regulation height, it may also be useful to convenient, to solve the problems referred to above that prior art exists.

The technical scheme solved the problem is: a kind of unloading tiny flow quantity throttling valve, comprise handle, valve rod and valve block, valve rod runs through the inner chamber of valve block, has the sealing-ring for valve body and valve stem seal on valve body top, and handle is fixedly linked by screw I and valve rod; Described valve rod is waney axle body, and there is outside screw its front end, and the internal chamber wall between the oil-in of valve block and oil outlet is provided with internal thread, and the screw-internal thread fit on described valve rod front end outside screw and valve block internal chamber wall forms small gap;

In a state of use, hydraulic efficiency oil enters from the oil-in of valve block, the minim gap that the screw-internal thread fit on valve rod front end outside screw and valve block internal chamber wall is formed, and flows out from the oil outlet of valve block; Coordinating length L size by handle regulating valve stem front end outside screw and the internal thread on valve block internal chamber wall, coordinate length L more short, flow is more big, otherwise, coordinate length L more long, flow is more little.

Its further technical scheme is: this throttling valve also has one with the location scale of scale, and this location scale is fixed on above valve block by screw II; Described location scale there is the height limit preventing valve rod from screwing out protruding; Described valve rod is provided with the circular scale scale that the projection of the height limit with described location scale matches.

Owing to adopting technique scheme, the one unloading of the utility model has following useful effect with micro-flow throttle valve:

1, regulation range width, precision height:

The principle of length that is that the throttling valve of the utility model adopts or change damper hole, reaches the object regulating flow; But what adopt is the damping that the form that the screw-internal thread fit on valve rod 3 front end outside screw and valve block 8 internal chamber wall forms the thread fit of small gap d reaches minim gap, then by regulating thread fit length to reach the length changing damper hole, thus the object of the size of flow is changed; Its regulation range is the length of the thread segment of the screw-internal thread fit on valve rod 3 front end outside screw and valve block 8 internal chamber wall, is called for short: screw thread useful length, screw thread useful length is more long, and regulation range is more wide, and precision is more high.

2, install and easy and simple to handle: the utility model throttling valve also has one with the location scale 4 of scale, it has height limit projection 41, can prevent valve rod 3 from screwing out; The circular scale scale 6 that the height limit projection 41 with described location scale 4 that is provided with described valve rod 3 matches, convenient adjustment and observation.

Below, in conjunction with the accompanying drawings and embodiments a kind of unloading of the utility model is further described by the technology feature of micro-flow throttle valve.

Accompanying drawing explanation

Fig. 1: the one of the utility model unloads with micro-flow throttle valve structural representation;

The C-C sectional view of Fig. 2: Fig. 1;

Fig. 3: the thread fit schematic diagram on valve rod front end outside screw and valve block internal chamber wall.

In figure:

1-handle, 2-screw I, 3-valve rod, 4-locates scale, and 41-height limit is protruding, 5-screw II, 6-circular scale scale, 7-sealing-ring, 8-valve block, A-oil-in, B-oil outlet, d-gap.

Embodiment

Micro-flow throttle valve is used in a kind of unloading.

As shown in Figure 1, this unloading tiny flow quantity throttling valve comprises handle 1, valve rod 3 and valve block 8, and valve rod 3 runs through the inner chamber of valve block 8, has on valve body top for the sealing-ring 7 that valve body and valve rod 3 seal, and handle 1 is fixedly linked by screw I 2 and valve rod 3;

Described valve rod 3 is waney axle body, there is outside screw its front end, being provided with internal thread on the internal chamber wall between oil-in A and oil outlet B of valve block 8, the screw-internal thread fit on described valve rod 3 front end outside screw and valve block 8 internal chamber wall forms small gap d (see Fig. 2, Fig. 3);

In a state of use, hydraulic efficiency oil enters from the oil-in A of valve block 8, the minim gap d that the screw-internal thread fit on valve rod 3 front end outside screw and valve block 8 internal chamber wall is formed, and flows out from the oil outlet B of valve block 8; Coordinating length L size by handle 1 regulating valve stem 3 front end outside screw and the internal thread on valve block 8 internal chamber wall, coordinate length L more short, flow is more big, otherwise, coordinate length L more long, flow is more little.

For better controlling Flow-rate adjustment, this throttling valve also has one with the location scale 4 of scale, and this location scale 4 is fixed on above valve block 8 by screw II 5; Described location scale 4 has the height limit projection 41 preventing valve rod 3 from screwing out; The circular scale scale 6 that the height limit projection 41 with described location scale 4 that is provided with described valve rod 3 matches.

A kind of unloading of the utility model with the installation method of micro-flow throttle valve is: first sealing-ring 7 is loaded valve block 8, then screws in valve rod 3, fixes location scale 4 with screw II 5, loads handle 1, and fix with screw I 2, installation.

Claims

1. a unloading tiny flow quantity throttling valve, comprise handle (1), valve rod (3) and valve block (8), valve rod (3) runs through the inner chamber of valve block (8), have for the sealing-ring (7) that valve body and valve rod (3) seal on valve body top, handle (1) is fixedly linked by screw I (2) and valve rod (3); It is characterized in that: described valve rod is waney axle body, there is outside screw its front end, being provided with internal thread on internal chamber wall between the oil-in (A) of valve block (8) and oil outlet (B), the screw-internal thread fit on described valve rod (3) front end outside screw and valve block (8) internal chamber wall forms small gap (d);

In a state of use, hydraulic efficiency oil enters from the oil-in (A) of valve block (8), the minim gap (d) that the screw-internal thread fit on valve rod (3) front end outside screw and valve block (8) internal chamber wall is formed, and flows out from the oil outlet (B) of valve block (8); Coordinating length L size by handle (1) regulating valve stem (3) front end outside screw and the internal thread on valve block (8) internal chamber wall, coordinate length L more short, flow is more big, otherwise, coordinate length L more long, flow is more little.

2. a kind of unloading tiny flow quantity throttling valve according to claim 1, it is characterised in that: this throttling valve also has one with the location scale (4) of scale, and this location scale (4) is fixed on valve block (8) top by screw II (5); Described location scale (4) has the height limit projection (41) preventing valve rod (3) from screwing out; Described valve rod (3) is provided with the circular scale scale (6) that the height limit projection (41) with described location scale (4) matches.