CN207470849U

CN207470849U - Throttle valve

Info

Publication number: CN207470849U
Application number: CN201721401613.1U
Authority: CN
Inventors: 欧阳电勾
Original assignee: JIANGXI VXIN HIGH-TECH PRECISION HARDWARE Co Ltd
Current assignee: JIANGXI VXIN HIGH-TECH PRECISION HARDWARE Co Ltd
Priority date: 2017-10-27
Filing date: 2017-10-27
Publication date: 2018-06-08
Anticipated expiration: 2027-10-27

Abstract

The utility model provides the throttle valve of a kind of novel in structural design, high sensitivity；It includes valve body, the spool being set in valve body；The runner through valve body is longitudinally equipped on valve body, a spool chamber is equipped in valve body, the one end open of spool chamber, its other end pass through runner to terminate in the middle part of valve body, enclosed slot formed in valve body far from the blind end on spool chamber opening extreme direction；The spool is located in spool chamber, and a tail cap is equipped in the openend of the spool chamber, and the spool is threadedly coupled through tail cap and with tail cap；Spool end close to described enclosed slot one end is equipped with the first rubber seal, and the spool middle front part near first rubber seal is equipped with the second rubber seal, and first rubber seal and the second rubber seal are arranged at intervals.

Description

Throttle valve

Technical field

Present invention relates particularly to a kind of throttle valves.

Background technology

Throttle valve is to throttle section or chock length by change to control the valve of fluid flow, existing referring to Fig. 1 Throttle valve is made of the spool in valve body and valve body, changes flow by changing spool to the section of runner.

Invention content

It is an object of the invention to overcome the deficiencies in the prior art, adapt to real needs, provide a kind of novel in structural design, The throttle valve of high sensitivity.

In order to achieve the object of the present invention, the technical solution adopted in the present invention is：

A kind of throttle valve is designed, it includes valve body, the spool being set in valve body；It is longitudinally equipped with through valve body on valve body Runner, valve body is interior to be equipped with a spool chamber, and the one end open of spool chamber, its other end terminate in the middle part of valve body across runner, separate Blind end on spool chamber opening extreme direction forms enclosed slot in valve body；The spool is located in spool chamber, and positioned at valve body Internal spool end is inserted into enclosed slot；A tail cap is equipped in the openend of the spool chamber, the spool runs through tail Cap is simultaneously threadedly coupled with tail cap；Close to described enclosed slot one end spool end be equipped with the first rubber seal, described first Spool middle front part near rubber seal is equipped with the second rubber seal, first rubber seal and the second rubber seal Circle is arranged at intervals, when the end of the spool, which is embedded in, to be closed in enclosed slot, the first rubber seal position In enclosed slot on the right side of the oil duct, second rubber seal is located in the spool chamber on the left of oil duct.

Preferably, the spool chamber on the left of oil duct is made of the ante-chamber and tail chamber docked, the internal diameter of the ante-chamber Less than the internal diameter of tail chamber, the junction of ante-chamber and tail chamber forms step, and a ring is equipped in the middle part of the spool of the tail intracavitary Shape baffle ring, the valve core upper sleeve between annular retaining ring and the step have spring.

Preferably, the spool in the ante-chamber is equipped with an endless groove, and the endless groove is located at the second rubber seal Between circle and spring.

Preferably, the front edge of the spool is rounded structure.

Preferably, the enclosed slot open end circumferential edge on runner side wall is rounded structure.

Spaced annular recess, first rubber seal and the second rubber seal there are two being set on the spool Circle is located in corresponding annular recess respectively.

The tail cap is threadedly coupled with the tail chamber.

Preferably, the runner and spool being set in valve body are two and are symmetrical arranged.

Preferably, throttling chamber in middle part is equipped between two runners, middle part throttles chamber as valve body middle part, and positioned at valve For the enclosed slot of two internal flow passage ends with middle part throttling chamber perforation, the runner positioned at valve body both sides passes through two envelopes Locked groove penetrates through；Middle part throttling intracavitary is equipped with a push rod, and the open end of the middle part throttling chamber on body wall, which is equipped with, to be connected Tail cap is connect, connection tail cap is threadedly coupled with middle part throttling chamber, and the push rod connect tail cap screw thread company through connection tail cap and with this It connects, the blind end far from the middle part throttling chamber on the throttling chamber open end direction of middle part forms closed pockets, and position in valve body It is inserted into closed pockets in the push rod end of valve inner.

Preferably, the push rod positioned at middle part throttling intracavitary is equipped with sealing rubber ring, positioned at the push rod of valve inner End edge is fillet, and the open end edge of closed pockets is fillet.

The beneficial effects of the present invention are：

The design its novel in structural design, high sensitivity, in use can be to avoid valve to the elastic force of spool by spring Axial dipole field of the core in valve body improves the sensitivity of this throttle valve, and secondly, this throttle valve seals effect in completely closed state The phenomenon that fruit is good, be not in oil leak, permeability.

Description of the drawings

Fig. 1 is the structure diagram of existing throttle valve；

Fig. 2 is the cross-sectional view of the present invention；

Fig. 3 is A portions enlarged structure schematic diagram in Fig. 2；

Fig. 4 is another cross-sectional view of the present invention；

In figure：1st, 9. spool;2nd, 10. tail cap;3. annular retaining ring;4. the second rubber seal;5th, 8. runner;6. spool end Portion;7. enclosed slot;11. valve body;12. tail chamber;13. spring;14. endless groove;15. the first rubber seal;16. the front end of spool Edge;17. enclosed slot open end circumferential edge;18. closed pockets;19. push rod end edge;20. the openend of closed pockets Edge;21. push rod;22. connect tail cap;23. sealing rubber ring.

Specific embodiment

The present invention is further described with reference to the accompanying drawings and examples：

Embodiment 1：A kind of throttle valve, referring to Fig. 2, Fig. 3；It includes valve body 11, the spool 1 being set in valve body 11；Valve The runner 5,8 for running through valve body 11 in longitudinal direction is longitudinally equipped on body 11, is equipped with spool chamber in valve body, the one end open of spool chamber, it is another One end passes through runner to terminate in the middle part of valve body 11, and closing is formed in valve body far from the blind end on spool chamber opening extreme direction Slot 7；The spool 1 is located in spool chamber, and the spool end 6 inside valve body 11 is inserted into enclosed slot 7.

Further, a tail cap 2 is equipped in the openend of the spool chamber in the design, the institute positioned at 5 left side of oil duct It states spool chamber to be made of the ante-chamber and tail chamber 12 docked, the tail cap is threadedly coupled with the tail chamber；The internal diameter of the ante-chamber is small In the internal diameter of tail chamber, the junction of ante-chamber and tail chamber 12 forms step, and a ring is equipped in the middle part of the spool of the tail intracavitary Shape baffle ring 3, the valve core upper sleeve between annular retaining ring and the step have spring 13, spool are applied to outside by spring and is pushed away Power.

The spool 1 in the design is threadedly coupled through tail cap 2 and with tail cap 2；Valve close to described 7 one end of enclosed slot Core end is equipped with the first rubber seal 15, and the spool middle front part near first rubber seal 15 is equipped with the second rubber Sealing ring 4,15 and second rubber seal 4 of the first rubber seal are arranged at intervals, set on the spool there are two be spaced The annular recess of setting, first rubber seal and the second rubber seal are located in corresponding annular recess respectively；When The end of the spool 1 is embedded in when being closed in enclosed slot 7, and first rubber seal 15 is located on the right side of oil duct Enclosed slot in, second rubber seal 4 is located in the spool chamber on the left of oil duct.

Further, the design is equipped with an endless groove also on the spool 1 in the ante-chamber, and the endless groove is located at Between second rubber seal and spring, spool and the contact area inside spool chamber can be reduced by this endless groove, simultaneously It can reduce frictional force between the two, improve spool lightweight during exercise, flexibility.

Further, the front edge 16 of the spool in the design is rounded structure, meanwhile, on runner side wall Enclosed slot open end circumferential edge 17 also for rounded structure, this two rounded structures can be carried compared to now rectangular design Stability of the high spool when entering enclosed slot, avoids the end of spool from occurring occurring the phenomenon that interim card during radial deflection, meanwhile, By the structure of this two fillets in the movement of spool, when face where the end of spool is in face where enclosed slot openend Runner can be got through when on the same face, and existing right-angle design is former so in closed state in this state, this design can To improve the sensitivity of this throttle valve, higher is suitable for low pressure oil way control.

As shown in the figure, the runner 5,8 and spool 1,9 that are set in valve body 1 are two and are symmetrical arranged.

When being closed, spool end 6 enters in enclosed slot the throttle valve of the design, at this point, the first rubber Glue sealing ring 15 is located in enclosed slot, and second rubber seal 4 is located in spool chamber, passes through the first rubber seal and Two rubber seal 4 play good sealing effect, can avoid the occurrence of the generation of permeability phenomenon；And it is needing to open simultaneously runner When throttling to it, rotary spool to release on the outside of valve body, reaches the cut-off area of runner spool by spool end To the purpose of throttling, state at this time can be found in state shown in Fig. 2, at this point, spring applies elastic force to push rod, pass through the bullet of paralysis Power can keep the stabilization of spool, avoid spool being caused axial move occur because axial dipole field occurs in the screw thread that spool is connect with tail cap It is dynamic（Displacement distance is 0.1-0.5mm）Cause choke pressure wild effect occur, can improve successively this throttle valve stability, Accuracy and simple operation.

Embodiment 2, referring to Fig. 4, part same as Example 1 repeats no more, and the difference lies in throttle valves in the design In two runners 5,8 between be equipped with a middle part and throttle chamber, middle part throttles chamber as the middle part of valve body 1, and in valve body Two flow passage ends enclosed slot 7 with middle part throttling chamber perforation, the runner positioned at valve body both sides passes through two closings Slot penetrates through；Middle part throttling intracavitary is equipped with a push rod 21, and the open end of the middle part throttling chamber on body wall, which is equipped with, to be connected Tail cap 22 is connect, connection tail cap 22 is threadedly coupled with middle part throttling chamber, and the push rod through connection tail cap and connect tail cap spiral shell with this Line connects, and the blind end far from the middle part throttling chamber on the throttling chamber open end direction of middle part forms closed pockets in valve body 19, and be inserted into closed pockets 18 positioned at the push rod end of valve inner.

Likewise, the push rod for being located at throttling intracavitary in the middle part in the design is equipped with sealing rubber ring 23, positioned at valve body Internal 19 edge of push rod end edge is fillet, and the open end edge 20 of closed pockets is also fillet.

The middle part throttling chamber of the design has following several purposes in use：

First, push rod is located in closed pockets and two oil ducts is isolated, this throttle valve is used as binary channels throttle valve；

2nd, push rod is released out of closed pockets connects two oil ducts, and two oil ducts can increase as an oil duct, this mode Add the total flow of two oil ducts；

3rd, one of oil duct in two oil ducts is closed, and push rod is unloaded from valve body, and the output of single oil duct is changed into Double oil duct outputs.

What the embodiment of the present invention was announced is preferred embodiment, and however, it is not limited to this, the ordinary skill people of this field Member easily according to above-described embodiment, understands the spirit of the present invention, and makes different amplification and variation, but as long as not departing from this The spirit of invention, all within the scope of the present invention.

Claims

1. a kind of throttle valve, it includes valve body, the spool being set in valve body；The runner through valve body is longitudinally equipped on valve body, A spool chamber is equipped in valve body, the one end open of spool chamber, its other end terminate in the middle part of valve body across runner, far from spool chamber Blind end on opening extreme direction forms enclosed slot in valve body；The spool is located in spool chamber, and positioned at valve inner Spool end is inserted into enclosed slot；It is characterized in that：A tail cap is equipped in the openend of the spool chamber, the spool passes through It wears tail cap and is threadedly coupled with tail cap；Spool end close to described enclosed slot one end is equipped with the first rubber seal, described Spool middle front part near first rubber seal is equipped with the second rubber seal, first rubber seal and the second rubber Sealing ring is arranged at intervals, when the end of the spool, which is embedded in, to be closed in enclosed slot, first rubber seal Circle is located in the enclosed slot on the right side of oil duct, and second rubber seal is located in the spool chamber on the left of oil duct.

2. throttle valve as described in claim 1, it is characterised in that：The spool chamber on the left of oil duct is by the ante-chamber that docks It is formed with tail chamber, the internal diameter of the ante-chamber is less than the junction composition step of the internal diameter of tail chamber, ante-chamber and tail chamber, positioned at the tail An annular retaining ring is equipped in the middle part of the spool of intracavitary, the valve core upper sleeve between annular retaining ring and the step has spring.

3. throttle valve as claimed in claim 2, it is characterised in that：Spool in the ante-chamber is equipped with an endless groove, The endless groove is between the second rubber seal and spring.

4. throttle valve as described in claim 1, it is characterised in that：The front edge of the spool is rounded structure.

5. throttle valve as claimed in claim 4, it is characterised in that：Enclosed slot open end circumferential edge on runner side wall For rounded structure.

6. throttle valve as claimed in claim 2, it is characterised in that：Spaced ring-type is recessed there are two being set on the spool Slot, first rubber seal and the second rubber seal are located in corresponding annular recess respectively.

7. throttle valve as claimed in claim 2, it is characterised in that：The tail cap is threadedly coupled with the tail chamber.

8. the throttle valve as described in claim 1 to 7 is any, it is characterised in that：The runner and spool being set in valve body be It two and is symmetrical arranged.

9. throttle valve as claimed in claim 8, it is characterised in that：Middle part throttling chamber, middle part are equipped between two runners Enclosed slot of the chamber as two flow passage ends in the middle part of valve body, and in valve body throttle with middle part throttling chamber perforation, is located at The runner of valve body both sides is penetrated through by two enclosed slots；Middle part throttling intracavitary is equipped with a push rod, on body wall The open end of middle part throttling chamber is equipped with connection tail cap, and connection tail cap is threadedly coupled with middle part throttling chamber, and the push rod runs through Connection tail cap simultaneously connect tail cap threaded connection with this, the closing far from the middle part throttling chamber on the throttling chamber open end direction of middle part End forms closed pockets in valve body, and is inserted into closed pockets positioned at the push rod end of valve inner.

10. throttle valve as claimed in claim 9, it is characterised in that：It is equipped with positioned at the push rod of middle part throttling intracavitary close Rubber ring is sealed, the push rod end edge positioned at valve inner is fillet, and the open end edge of closed pockets is fillet.