CN203067860U - Counter-balance valve - Google Patents

Counter-balance valve Download PDF

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Publication number
CN203067860U
CN203067860U CN 201220721174 CN201220721174U CN203067860U CN 203067860 U CN203067860 U CN 203067860U CN 201220721174 CN201220721174 CN 201220721174 CN 201220721174 U CN201220721174 U CN 201220721174U CN 203067860 U CN203067860 U CN 203067860U
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CN
China
Prior art keywords
valve
hole
valve pocket
seat
spool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN 201220721174
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Chinese (zh)
Inventor
袁才富
金丹
朱剑根
瞿东
沈至伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Lixin Hydraulic Co Ltd
Original Assignee
Shanghai Lixin Hydraulic Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Lixin Hydraulic Co Ltd filed Critical Shanghai Lixin Hydraulic Co Ltd
Priority to CN 201220721174 priority Critical patent/CN203067860U/en
Application granted granted Critical
Publication of CN203067860U publication Critical patent/CN203067860U/en
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Abstract

The utility model discloses a counter-balance valve which comprises a first valve sleeve, a valve seat, second valve sleeve, a valve core, a pressure adjusting spring and an adjusting mechanism. The valve seat and the adjusting mechanism are placed inside the first valve sleeve. A second stepped hole which is used for placing the second valve sleeve is formed in an inner hole which is formed in the left side of the valve seat. A flower-shaped groove which is used for a working port flow passage is formed in an inner hole which is formed in the right side of the valve seat. A balance groove is formed in the a central position of an outer circle of the second valve sleeve, and a second inclined hole which is communicated with the valve core is formed in the balance groove, and a function that oil flows into a spring cavity to push the valve core is achieved. A third inclined hole which is communicated with an annular through hole of the valve seat is formed in the second inclined hole. A chamfer which is matched with a sealing face of the valve core is arranged on the right side of the second valve sleeve and plays a role of sealing. The valve core is arranged inside the second valve sleeve.

Description

A kind of valve that contends with
Technical field
The utility model relates to the valve field, specifically, specially refers to a kind of valve that contends with.
Background technique
Seal valve is hydraulically powered sample inlet switching control pilot, and this valve body is provided with O shape circle between center piston and sliding sleeve, to solve center piston and the problem that slides over bad sealing in the to-and-fro motion process.When valve when opening, at first mobile O shape circle draws back contact openings then; The closed contact openings of elder generation when closing, mobile O shape circle then.In addition, the O shape of installing on seal valve center piston circle, high pressure successively is added to the both sides of this circle in the course of the work, and every switch once it crosses seam twice, be easy to damage, make to cooperate not closely between center piston and the sliding sleeve have leakage phenomenon to take place.
The model utility content
The purpose of this utility model is to provide a kind of valve that contends with, and is used for preventing that load from causing that oil hydraulic cylinder or motor are out of control, has improved sealing and the cost performance of one-way valve simultaneously, has overcome the deficiency in the conventional art, thereby has realized the purpose of this utility model.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of valve that contends with, it comprises first valve pocket, valve seat, second valve pocket, spool, pressure adjusting spring and controlling mechanism;
Described first valve pocket is fixed by Steel Cable Baffle Ring and the valve seat of a side setting, and the outer surface of first valve pocket is provided with the outside thread that is connected for the plug-in opening with the valve piece; Externally threaded left side has first inclined hole as the oily runner of control; The endoporus of first valve pocket has the first step hole, is used for placing valve seat and controlling mechanism;
The left side cylindrical of described valve seat is provided with a radial hole, and an end of described radial hole is communicated with first inclined hole, its other end and the second valve pocket internal communication; The right side cylindrical of valve seat is provided with the annular through-hole for the actuator port runner; The left side endoporus of valve seat has the second step hole and is used for placing second valve pocket, and the right side endoporus of valve seat has the colored shape groove for the actuator port runner;
The cylindrical neutral position of described second valve pocket has compensating groove, and described compensating groove place also is provided with one second inclined hole and communicates with spool, realizes that fluid flows into the effect that spring chamber promotes spool; The second inclined hole place has the 3rd inclined hole that is connected with the annular through-hole of valve seat; The right side of second valve pocket is provided with a chamfering that matches with the sealing surface of spool, plays sealing process;
Described spool is installed on the inside of second valve pocket, and an end of spool is adjusted packing ring by the Steel Cable Baffle Ring and first of its outer installment and is connected;
Described controlling mechanism comprises pressure adjusting spring, spring seat, second adjustment packing ring and the adjustable lever; One end of described adjustable lever is mutually close with spool, the other end of adjustable lever is provided with the deck structure, described spring seat is arranged at deck structure place, and adjustable lever is connected with spring seat by the pressure adjusting spring that its surface arranges, and the other end of described adjustable lever also is equipped with second and adjusts packing ring.
In an embodiment of the present utility model, described first valve pocket, valve seat, second valve pocket and adjustable lever all are placed with seal ring.
In an embodiment of the present utility model, endoporus adjusting place of described first valve pocket is carved with triangular groove and is matched with spring seat.
In an embodiment of the present utility model, described second step hole is provided with one for the chamfering that prevents the seal ring side cut damage on second valve pocket.
In an embodiment of the present utility model, the endoporus of described second valve pocket and valve seat leaves matching gap.
The beneficial effects of the utility model are: seal form adopts spheric structure, has improved the sealing of one-way valve.Mounting type adopts the plug-in type structure, and volume is little, and processing technology is simple, is convenient to mounting or dismounting and maintenance, makes manufacture cost lower, is conducive to improve total quality and reduces cost.
Description of drawings
Fig. 1 is the sectional drawing of the valve that contends with described in the utility model.
Fig. 2 is the external view of the valve that contends with described in the utility model.
Fig. 3 is the sectional view of first valve pocket described in the utility model.
Fig. 4 is the schematic representation of spring seat described in the utility model.
Fig. 5 is the sectional view of valve seat described in the utility model.
Fig. 6 is the left view of valve seat described in the utility model.
Fig. 7 is the sectional view of second valve pocket described in the utility model.
Fig. 8 is the sectional view of spool described in the utility model.
Fig. 9 is the function graphical diagram of the valve that contends with described in the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
As Fig. 1-shown in Figure 9, a kind of valve that contends with described in the utility model, Placement is plug-in type, mainly is made up of first valve pocket 5, valve seat 10, the 2 12, spool 14, adjustable lever 3 and pressure adjusting spring 4 etc.
The right side cylindrical of first valve pocket 5 is made groove, and assembling Steel Cable Baffle Ring 21 is used for fixing with valve seat 9.The right side outer surface is made outside thread, is used for being connected with the plug-in opening of valve piece.Make seal groove in externally threaded left side, place seal ring 23,26, be used for the sealing with the plug-in opening joint, prevent the fluid external leakage.Make inclined hole 7 in its left side simultaneously, for the X mouth is controlled oily runner.Left end place at first valve pocket 5 makes outer-hexagonal 30, when being used for installing and removing with plug-in opening and hexagon wrench be used.The endoporus of first valve pocket 5 is made step hole, is used for placing valve seat 9, pressure adjusting spring 4, spring seat 27, adjusts packing ring 2 and adjustable lever 3.The adjusting form that triangular groove 31 cooperates with spring seat 27 that carves is adopted in endoporus adjusting place of first valve pocket 5.
The right side cylindrical of valve seat 9 is made groove, places seal ring 15, is used for the sealing with the plug-in opening joint.The left side cylindrical is made groove, places seal ring 10, is used for the sealing with first valve pocket 5.The left side cylindrical is made a radial hole 22, enters in the 2 12 by this radial hole fluid when being used for X control mouth input control oil.Make annular through-hole 13 on the cylindrical of right side, be A actuator port runner.The left side endoporus is made step hole and be used for to be placed the 2 12, makes a chamfering 32 herein, and the seal ring when preventing from assembling on the 2 12 is cut edge and damaged.The right side endoporus is made colored shape groove 16, is B actuator port runner, flowing when being used for the fluid reverse opening.
The 2 12 cylindrical is made groove and is placed seal ring 24, prevents the fluid external leakage.The cylindrical intermediate portion is made compensating groove, and its effect one is the minute impurities that stores in the fluid, prevents that valve seat is stuck; The 2nd, but self-aligning, and under the effect of oil pressure, the oil film in the 2 12 cylindrical and the valve seat 9 endoporus matching gaps will be very even, can slow down wearing and tearing, also can reduce internal leakage.The compensating groove place makes a little inclined hole 11 and communicates with endoporus, realizes that fluid flows into the effect that spring chamber promotes spool 14.Little inclined hole 11 places make a big inclined hole 19, communicate with the annular through-hole 13 of valve seat 9.The right side endoporus is made a chamfering and is cooperated with the sealing surface 17 of spool 14, plays the effect of sealing, thereby the fluid oil inlet and outlet is isolated, and satisfies unidirectional opening feature.
The sealing surface 17 of spool 14 belongs to ball face sealing.Cylindrical is made the Steel Cable Baffle Ring groove on the right side of spool 14, by Steel Cable Baffle Ring 25 spool 14 is connected built-in spring 8 with adjustment packing ring 6.
The contend with left side of valve is regulated part by adjustable lever 3, pressure adjusting spring 4, spring seat 27 and is adjusted packing ring 2 etc. and form.Make groove at adjustable lever 3, place seal ring and back-up ring 28, the outer seepage that produces when preventing from herein regulating.Hexagonal 29 in arranging on the adjustable lever 3 matches with inner hexagon spanner during adjusting and operates.Regulate and finish to lock by locking nut 1.
Working principle of the present utility model is as follows:
Fluid flow direction when weight descends be B to A, X is control port.A mouth and B mouth are in dissengaged positions among Fig. 1, the B mouth generally connects cavity of resorption or the oil motor of oil cylinder, the X mouth connects another chamber of oil cylinder epicoele or oil motor, main effect one is the position of locked cylinder or oil motor, the 2nd, avoid oil cylinder or the oil motor creeping phenomenon in the process that descends, especially in the beginning that descends and the moment of termination, owing to load produces jiggly problem greatly.
When X control mouth 7 was imported control oil, the pressure oil that is formed by weight acted on the spool 14, and weight is locked.
When X control mouthful 7 input controls were oily, fluid flowed into by the radial hole 22 on the valve seat 9, overcomes the setting pressure at pressure adjusting spring 4 places, promotes valve seat 9 and is moved to the left, and makes B → A forward open.
During A → B reverse opening, fluid enters from the A mouth, promotes spool 14 toward moving right, and opens and the sealing surface between the 2 12 17, and fluid flows out from the B mouth.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (5)

1. the valve that contends with is characterized in that, it comprises first valve pocket, valve seat, second valve pocket, spool, pressure adjusting spring and controlling mechanism;
Described first valve pocket is fixed by Steel Cable Baffle Ring and the valve seat of a side setting, and the outer surface of first valve pocket is provided with the outside thread that is connected for the plug-in opening with the valve piece; Externally threaded left side has first inclined hole as the oily runner of control; The endoporus of first valve pocket has the first step hole, is used for placing valve seat and controlling mechanism;
The left side cylindrical of described valve seat is provided with a radial hole, and an end of described radial hole is communicated with first inclined hole, its other end and the second valve pocket internal communication; The right side cylindrical of valve seat is provided with the annular through-hole for the actuator port runner; The left side endoporus of valve seat has the second step hole and is used for placing second valve pocket, and the right side endoporus of valve seat has the colored shape groove for the actuator port runner;
The cylindrical neutral position of described second valve pocket has compensating groove, and described compensating groove place also is provided with one second inclined hole and communicates with spool, realizes that fluid flows into the effect that spring chamber promotes spool; The second inclined hole place has the 3rd inclined hole that is connected with the annular through-hole of valve seat; The right side of second valve pocket is provided with a chamfering that matches with the sealing surface of spool, plays sealing process;
Described spool is installed on the inside of second valve pocket, and an end of spool is adjusted packing ring by the Steel Cable Baffle Ring and first of its outer installment and is connected;
Described controlling mechanism comprises pressure adjusting spring, spring seat, second adjustment packing ring and the adjustable lever; One end of described adjustable lever is mutually close with spool, the other end of adjustable lever is provided with the deck structure, described spring seat is arranged at deck structure place, and adjustable lever is connected with spring seat by the pressure adjusting spring that its surface arranges, and the other end of described adjustable lever also is equipped with second and adjusts packing ring.
2. a kind of valve that contends with according to claim 1 is characterized in that, described first valve pocket, valve seat, second valve pocket and adjustable lever all are placed with seal ring.
3. a kind of valve that contends with according to claim 1 is characterized in that, endoporus adjusting place of described first valve pocket is carved with triangular groove and is matched with spring seat.
4. a kind of valve that contends with according to claim 1 is characterized in that, described second step hole is provided with one for the chamfering that prevents the seal ring side cut damage on second valve pocket.
5. a kind of valve that contends with according to claim 1 is characterized in that, the endoporus of described second valve pocket and valve seat leaves matching gap.
CN 201220721174 2012-12-24 2012-12-24 Counter-balance valve Active CN203067860U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220721174 CN203067860U (en) 2012-12-24 2012-12-24 Counter-balance valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220721174 CN203067860U (en) 2012-12-24 2012-12-24 Counter-balance valve

Publications (1)

Publication Number Publication Date
CN203067860U true CN203067860U (en) 2013-07-17

Family

ID=48766644

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220721174 Active CN203067860U (en) 2012-12-24 2012-12-24 Counter-balance valve

Country Status (1)

Country Link
CN (1) CN203067860U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103343829A (en) * 2013-07-24 2013-10-09 南京工业大学 Balance valve and testing system thereof
CN103899795A (en) * 2012-12-24 2014-07-02 上海立新液压有限公司 Counterbalance valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103899795A (en) * 2012-12-24 2014-07-02 上海立新液压有限公司 Counterbalance valve
CN103343829A (en) * 2013-07-24 2013-10-09 南京工业大学 Balance valve and testing system thereof
CN103343829B (en) * 2013-07-24 2015-06-03 南京工业大学 Balance valve and testing system thereof

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