CN208221679U - A kind of inner wall throttle type check valve - Google Patents

Abstract

A kind of inner wall throttle type check valve, belongs to valve technology field.Inner wall throttle type check valve, including valve body (3), it is characterized by: being provided with spool (5) in the inner cavity of valve body (3), it is provided in the end of spool (5) and is squeezed and mobile valve block (2) by liquid, inner cavity one end is open end, the other end forms closed end by end cap (8) closing, the diameter of valve body (3) inner wall is sequentially reduced from open end to closed end, valve block (2) and the inner wall of valve body (3) form the circulation passage of liquid, it is additionally provided with the elastic component that driving valve block (2) resets after by hydraulic moving in the lumen, open end is provided with baffle (1), baffle (1) cooperates with valve block (2) closes open end.In this inner wall throttle type check valve, the circulation passage of liquid is cooperatively formed by valve interior wall and valve block, the size of hydraulic oil circulation passage is adjusted after valve block compression is mobile, to realize the adjusting carried out to valve opening size.

Description

A kind of inner wall throttle type check valve

Technical field

A kind of inner wall throttle type check valve, belongs to valve technology field.

Background technique

Check valve is a kind of valve very widely used at present, check valve for preventing medium reverse reflux in pipeline It is the conducting that the mobile realization valve of spool is pushed by the pressure of medium, so current check valve is often that pressure is bigger, valve The aperture of door is bigger, and flow is also bigger.However need to control flow when pressure is very big in some fields, also It is that flow will slowly increase after pressure increases to certain value or flow remains unchanged for requirement, even reduces, and current Check valve is all unable to control flow.

Summary of the invention

Technical problem to be solved by the utility model is: overcoming the deficiencies of the prior art and provide one kind passes through valve interior wall The circulation passage of liquid is cooperatively formed with valve block, and the size of hydraulic oil circulation passage is adjusted after valve block compression is mobile, from And realize the inner wall throttle type check valve that valve opening size is adjusted.

The technical scheme adopted by the utility model to solve the technical problem is as follows: the inner wall throttle type check valve, including liquid The valve body that body flows through, it is characterised in that: be axially provided with spool in the inner cavity of valve body, be provided in the end of spool by liquid It squeezes and mobile valve block, inner cavity one end is open end, and the other end is equipped with end cap, several flowing holes are offered on end cap；Valve The perimeter of internal wall is gradually reduced from open end to end cap, and the circulation passage of liquid is formed between valve block and the inner wall of valve body, It is additionally provided with the elastic component that driving valve block resets after by hydraulic moving in inner cavity, open end is provided with baffle, baffle and valve block Open end is closed in cooperation.

Preferably, the elastic component is set in the outer ring of spool, and valve block is flexibly connected with spool, valve block be pressurized after with bullet Property part simultaneously slide axially along spool.

Preferably, the elastic component is the tower spring of uniform external diameter variation.

Preferably, the elastic component is that coefficient of elasticity is different and multiple springs of head and the tail connection, between adjacent springs by Partition is spaced；Or the elastic component is multiple springs that coefficient of elasticity is different and height is different, multiple springs successively cover If.

Preferably, two groups of spring limiting parts are provided on the medial surface of end cap, two groups of spring limiting parts are located at different straight On two circumference of diameter, elastic component is placed in the gap of two groups of spring limiting part internal and external partitions formation.

Preferably, the inner wall of the valve body is even surface, the perimeter even variation of the inner wall of valve body.

Preferably, the inner wall of the valve body is multisection type, and each section of perimeter is gradually reduced from open end to end cap, and In each section, the perimeter of the inner wall of valve body uniformly reduces.

Preferably, the outer circumference of the valve block is less than the length at valve interior wall perimeter minimum.

Preferably, the spool with valve block is concentric fixes, the other end is pierced by from end cap central.

Preferably, the baffle is annular shape.

Compared with prior art, beneficial effect possessed by the utility model is:

1, in this inner wall throttle type check valve, the circulation passage of liquid, valve are cooperatively formed by valve interior wall and valve block The size of hydraulic oil circulation passage is adjusted after piece compression is mobile, to realize the tune carried out to valve opening size Section.

2, reduce the diameter of the inner wall of valve body is since at port, therefore immediately enter throttling shape after valve block once motion State, thus it is more rapid for hydraulic reaction.

3, by setting spool, in order to which valve block smoothly slides in the lumen.

4, pass through setting spring limiting part, it is ensured that tower spring is not in displacement during compression or release.

5, by setting tower spring, the reset of valve block can be realized after by hydraulic be subjected to displacement in valve block.

Detailed description of the invention

Fig. 1 is 1 structural schematic diagram of inner wall throttle type check valve embodiment.

Fig. 2 is sectional view along A-A in Fig. 1.

Fig. 3 is inner wall throttle type check valve left view.

Fig. 4 is 2 structural schematic diagram of inner wall throttle type check valve embodiment.

Fig. 5 is 3 structural schematic diagram of inner wall throttle type check valve embodiment.

Fig. 6 is 4 structural schematic diagram of inner wall throttle type check valve embodiment.

Fig. 7 is 5 structural schematic diagram of inner wall throttle type check valve embodiment.

Wherein: 1, baffle 2, valve block 3, valve body 4, tower spring 5, spool 6, spring limiting part 7, flowing hole 8, end cap 9, partition 10, the first spring 11, second spring.

Specific embodiment

Fig. 1 ~ 3 are the most preferred embodiments of the utility model, and 1 ~ 7 pair of the utility model is done furtherly with reference to the accompanying drawing It is bright.

Embodiment 1:

As shown in Fig. 1 ~ 3, a kind of inner wall throttle type check valve, including valve body 3, valve body 3 is cylindrical shape, in valve body 3 Portion is provided with the inner cavity axially penetrated through, and in valve body 3, wherein one end is open end, and setting is equipped with 8 shape of end cap at the port of the other end At closed end, several flowing holes 7 are offered in the border of end cap 8.3 open end side of valve body is defined as this inner wall throttle type list To the outside of valve, 8 side of end cap is defined as to the inside of this inner wall throttle type check valve.

The spool 5 axially penetrated through is provided in the inner cavity of valve body 3,5 one end of spool is fixed at the center of end cap 8, separately One end extends at the port of 3 other side of valve body.It is disposed with tower spring 4 and valve block 2 from inside to outside in the lumen, passes through setting Spool 5, in order to smoothly slide in 2 inner cavity of valve block, tower spring 4 and valve block 2 are sleeved on spool 5 simultaneously.

The open end border of valve body 3 is provided with cricoid baffle 1, valve block 2 is kept off in the inside of valve body 3, prevented by baffle 1 Valve block 2 pops up at the port of valve body 3 under the elastic force of tower spring 4.Simultaneously baffle 1 and valve block 2 cooperate by the open end of valve body 3 into Row closing, avoids hydraulic oil reverse circulated.

Two groups of spring limiting parts 6 are provided on the inner face of end cap 8, two groups of spring limiting parts 6 are located at different-diameter On two circumference, tower spring 4 is placed in the gap of two groups of 6 internal and external partitions of spring limiting part formation, as shown in Figure 2.Pass through setting Spring limiting part 6, it is ensured that tower spring 4 is not in displacement, any one group of spring limiting part 6 during compression or release Monoblock type or segmented can be used.

In this inner wall throttle type check valve, the inner wall of valve body 3 and the outer ring of valve block 2 are both designed as circle, valve body 3 Inner wall is the even surface being obliquely installed, and the perimeter of 3 inner wall of valve body uniformly reduces from one side of open end to 8 side of end cap, in valve body 3 Diameter at wall perimeter minimum is greater than the outer diameter (outer circumference) of valve block 2, therefore when putting valve block 2 and being moved at end cap 8, will not will Flowing hole 7 blocks completely.The inner wall interval of valve block 2 and valve body 3 forms the circulation passage that hydraulic oil flows in or out valve body 3, when Valve block 2 along spool 5 to 3 medial movement of valve body when, the circulation area of circulation passage is gradually reduced, to realize to hydraulic oil Throttling action.

Specific work process and working principle are as follows:

This inner wall throttle type check valve is mounted in hydraulic oil pipeline, since baffle 1 and valve block 2 cooperate opening valve body 3 Mouth end is closed, therefore hydraulic oil can not reverse circulated.

When the flow velocity positive change of the hydraulic oil of hydraulic oil pipeline, the oil pressure that hydraulic oil is applied on valve block 2 can become larger, When the pressure of hydraulic oil is enough to overcome the elastic force of limit tower spring 4, valve block 2 can be pressed towards the inside of valve body 3, since tower spring 4 is thick Thin even variation, therefore the elastic force of tower spring 4 gradually changes, therefore the contraction state of tower spring 4 can be with the variation of hydraulic fluid pressure And gradually taper up, valve block 2 is gradually moved to the inside of its valve body 3 at this time, so that the circulation area of hydraulic oil reduces, slows down valve The degree of displacement of body 3, realizes restriction effect, and when the pressure of hydraulic oil is gradually reduced, valve block 2 can be under the action of tower spring 4 Gradually reset.

Embodiment 2:

As shown in figure 4, the present embodiment the difference from embodiment 1 is that: in the present embodiment, omit tower spring 4 and pass through bullet The first different spring 10 of property coefficient and second spring 11 are replaced.Partition 9,10 He of the first spring are set on spool 5 Second spring 11 is located at the two sides of partition 9 and is sleeved on the outer ring of spool 5 simultaneously.When valve block 2 is pressurized movement, press first The small spring of contracting coefficient of elasticity continues the big spring of elasticity of compression coefficient when the pressure of hydraulic oil is gradually increased, realizes valve The effect that piece 2 is gradually tapered up by the variation with hydraulic fluid pressure.

The present embodiment can also carry out head and the tail connection using the different spring of more coefficient of elasticity when implementing and successively install.

Embodiment 3:

As shown in figure 5, the present embodiment the difference from embodiment 1 is that: in the present embodiment, omit tower spring 4 and pass through bullet The first different spring 10 of property coefficient and second spring 11 are replaced.11 coefficient of elasticity phase of first spring 10 and second spring Different, diameter is different and height is different, and the small spring of diameter is mounted on to the inner ring of the big spring of diameter, the first spring 10 and second Spring 11 is sleeved on the outer ring of spool 5 simultaneously.When valve block 2 is pressurized movement, a wherein spring is compressed first, when hydraulic oil It is contacted after valve block 2 continues to move to when pressure is gradually increased with other spring and continues to compress other spring, realize valve block 2 The effect gradually tapered up by the variation with hydraulic fluid pressure.First spring 10 can also be identical with diameter with second spring 11, hands over Fork is arranged.

The present embodiment can also be using more coefficient of elasticity are different, diameter is identical or different and height is different when implementing Spring is set with.

Embodiment 4:

As shown in fig. 6, the present embodiment the difference from embodiment 1 is that: in the present embodiment, the inner wall of valve body 3 is divided into more Section, each section of diameter ecto-entad is sequentially reduced, and in each section, the inner diameter of valve body 3 uniformly reduces.

Embodiment 5:

As shown in fig. 7, the present embodiment the difference from embodiment 1 is that: in the present embodiment, valve block 2 and spool 5 is concentric solid Fixed, the end of spool 5 passes through from 8 center of end cap, when valve block 2 receives oil pressure movement while pushing 5 synchronizing moving of spool, spool 5 synchronizing moving spools 5 are pierced by from end cap 8.After oil pressure restores normal, valve block 2 and spool 5 are under the promotion of tower spring 4 It resets simultaneously.

Embodiment 6:

The present embodiment the difference from embodiment 1 is that: in the present embodiment, the inner wall shape of the outer ring of valve block 2 and valve body 3 It may be designed as other shapes, such as triangle, rectangle, be also designed to other irregular shapes.

This inner wall throttle type check valve can make any combination of above embodiments.

The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent The equivalent embodiment of variation.But it is all without departing from the content of the technical scheme of the utility model, the technology according to the utility model is real Matter any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the guarantor of technical solutions of the utility model Protect range.

Claims (10)

1. a kind of inner wall throttle type check valve, the valve body flowed through including liquid (3), it is characterised in that: in the inner cavity of valve body (3) Spool (5) axially are provided with, is provided in the end of spool (5) and is squeezed and mobile valve block (2) by liquid, inner cavity one end is to open Mouth end, the other end are equipped with end cap (8), several flowing holes (7) are offered on end cap (8)；The perimeter of valve body (3) inner wall is open certainly It holds to end cap (8) and is gradually reduced, form the circulation passage of liquid between valve block (2) and the inner wall of valve body (3), also set in the lumen It is equipped with the elastic component that driving valve block (2) resets after by hydraulic moving, is provided with baffle (1) in open end, baffle (1) and valve block (2) open end is closed in cooperation.

2. inner wall throttle type check valve according to claim 1, it is characterised in that: the elastic component is set in spool (5) outer ring, valve block (2) are flexibly connected with spool (5), and valve block (2) is axially sliding along spool (5) simultaneously with elastic component after being pressurized It is dynamic.

3. inner wall throttle type check valve according to claim 1 or 2, it is characterised in that: the elastic component is that outer diameter is equal The tower spring (4) of even variation.

4. inner wall throttle type check valve according to claim 1 or 2, it is characterised in that: the elastic component is elasticity system Different and head and the tail connection multiple springs are counted, are spaced between adjacent springs by partition (9)；Or the elastic component is elasticity Multiple springs that coefficient is different and height is different, multiple springs are successively arranged.

5. inner wall throttle type check valve according to claim 1, it is characterised in that: be arranged on the medial surface of end cap (8) There are two groups of spring limiting parts (6), two groups of spring limiting parts (6) are located on two circumference of different-diameter, and elastic component is placed in two In the gap that group spring limiting part (6) internal and external partition is formed.

6. inner wall throttle type check valve according to claim 1, it is characterised in that: the inner wall of the valve body (3) is smooth Face, the perimeter even variation of the inner wall of valve body (3).

7. inner wall throttle type check valve according to claim 1, it is characterised in that: the inner wall of the valve body (3) is multistage Formula, each section of perimeter are gradually reduced from open end to end cap (8), and in each section, the perimeter of the inner wall of valve body (3) is uniform Reduce.

8. inner wall throttle type check valve according to claim 1, it is characterised in that: the outer circumference of the valve block (2) is small Length at valve body (3) inner wall perimeter minimum.

9. inner wall throttle type check valve according to claim 1, it is characterised in that: the spool (5) and valve block (2) are concentric Fixed, the other end is pierced by from end cap (8) center.

10. inner wall throttle type check valve according to claim 1, it is characterised in that: the baffle (1) is annular shape.