CN109268334A - A kind of check valve and hydraulic tool for hydraulic tool - Google Patents
A kind of check valve and hydraulic tool for hydraulic tool Download PDFInfo
- Publication number
- CN109268334A CN109268334A CN201811385746.3A CN201811385746A CN109268334A CN 109268334 A CN109268334 A CN 109268334A CN 201811385746 A CN201811385746 A CN 201811385746A CN 109268334 A CN109268334 A CN 109268334A
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- oil
- check valve
- valve seat
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 230000000694 effects Effects 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 16
- 239000008358 core component Substances 0.000 claims description 13
- 230000033228 biological regulation Effects 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 88
- 239000010720 hydraulic oil Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 239000006071 cream Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Check Valves (AREA)
Abstract
The invention belongs to hydraulic tool technical fields, refer in particular to a kind of check valve and hydraulic tool for hydraulic tool.This is used for the check valve of hydraulic tool, including the valve seat, valve body and the spool and spring being arranged between valve seat and valve body being fixed in valve opening, the valve seat opens up a through-hole, spring is connected between spool and valve body, under the elastic force effect of the spring, the plane of the spool upper end can lean with the valve seat lower end surface and form primary sealing area；The valve body bottom end is evenly equipped with several flowing holes, and when spool upper surface is separated with valve seat lower end surface, flowing hole is connected to through-hole, and the medium in the through-hole is flowed out by flowing hole.The present invention uses flat seal by changing the shape of spool between spool and valve body, in addition reduce sealing contact surface between the two so that its sealing performance greatly promotes, prevent during the work time check valve there is the appearance of the case where reversed oil return.
Description
Technical field
The invention belongs to hydraulic tool technical fields, refer in particular to a kind of check valve and hydraulic tool for hydraulic tool.
Background technique
Currently, a kind of dynamical element of the hydraulic tool as hydraulic system, including multiple types, wherein Electric hydraulic tool
Motor, shoe cream room, hydraulic pump, hydraulic cylinder, switch block, control valve are generally comprised, is equipped with reset spring and work in hydraulic cylinder
Stopper rod, Electric hydraulic tool drive hydraulic pump rotation at work, by motor, the pressure oil in shoe cream room are pressed into hydraulic
In cylinder and hydraulic unit is pushed to be at the state of work, oil liquid is sucked from oil bag, then formed pressure oil and be then exhausted from,
It works until sending to executive component；The core work position of hydraulic tool is the pump housing, and pump body offers valve opening, valve
It will be installed check valve in hole, usually so as to unidirectional disengaging and transport of the oil liquid in valve opening.
As Chinese patent literature data discloses a kind of hydraulically-controlled one-way valve [application number: 201420357673.8 of proposition；Authorization
Notification number: CN203948362U], including by ball support, steel ball, retaining ring composition, by by the diameter and ontology of spherical spool
The mode that the diameter of section size of inner via hole matches to carry out spool radial limit, enables spool always along body shaft
Line direction is mobile, although overcoming the deficiency that spool moves radially after leaving sealing surface, but will receive spool certainly
Body gravity and the problem for leakproofness deficiency occur, occur spool often moved radially after leaving sealing surface and against
On inner sidewall, spring pushes spool mobile to sealing surface direction, and at this moment spherical spool is when closed it is possible that leakage, makes
The oil liquid reverse flow in check valve is obtained, causes working efficiency low, reliability substantially reduces.
Summary of the invention
The object of the present invention is to provide a kind of good seal performance, anti-loosening property is good, work efficiency is high, liquid with long service life
The check valve of pressure tool.
The object of the present invention is achieved like this: a kind of check valve for hydraulic tool, including being fixed in valve opening
Valve seat, valve body and the spool and spring being arranged between valve seat and valve body, the valve seat open up a through-hole, and spring is connected to
Between spool and valve body, under the elastic force effect of the spring, the plane of the spool upper end can be with valve seat lower end surface phase
Against and form primary sealing area；The valve body bottom end is evenly equipped with several flowing holes, when spool upper surface and valve seat lower end surface
When separation, flowing hole is connected to through-hole, and the medium in the through-hole is flowed out by flowing hole.
Preferably, inner sidewall compatible with spool shape size is offered in the valve body, the inner sidewall is to spool
It carries out radial limit and the spool is enable to move always along its axis direction.
Preferably, the plane of the spool lower end is convexly equipped with the guide post being installed in spring, offers in the valve body
Mounting groove compatible with spring outer diameter size, the spring are connected in guide post and mounting groove.
Preferably, the valve body bottom surface is the first tapered surface, is installed on O-ring seal on first tapered surface.
Preferably, the valve seat upper end offers interior hexagonal and screws slot, is equipped on the outside of the valve seat for being fixed on valve opening
The external screw thread of upper inner wall.
Preferably, the valve seat lower end surface is convexly equipped with a boss, the primary sealing area by the plane of spool upper end with
The plane of boss abuts against to be formed.
Preferably, a kind of hydraulic tool, including the pump housing, the pump housing rear end are provided with the oil bag for storing hydraulic oil,
The pump housing is interior to be equipped with the oil discharge passage for being connected to the oil inlet passage of oil bag and being connected to hydraulic cylinder, divides in oil inlet passage and oil discharge passage
In line check valve and oil outlet one-way valve are not installed, in line check valve or/and oil outlet one-way valve are for the unidirectional of hydraulic tool
The check valve installation end of valve, the oil inlet passage or oil discharge passage is equipped with tapped valve opening, and the valve seat of the check valve is logical
It crosses and is threaded in the valve opening, when valve seat screws, the plane that the boss is connected to spool upper end forms sealing, described
Valve opening bottom surface is equipped with the second tapered surface compatible with the first tapered surface of valve body, and under the action of valve seat, the valve body passes through O
Type sealing ring is sealed on the second tapered surface；Working chamber is offered in the pump housing, oil inlet passage is connected to work with oil discharge passage
Chamber, the working chamber is interior to be equipped with the pump core component moved back and forth；Be equipped with hydraulic cylinder in the pump housing, the hydraulic cylinder and oil bag it
Between be equipped with drain path, drain path be equipped with a relief valve, the pump housing lower end is connected with for controlling relief valve and motor
The regulation handle of opening and closing, the pump housing lower section are additionally provided with the pressing mechanism in the hydraulic oil indentation hydraulic cylinder in oil bag, pressurization
Mechanism includes the motor that the pump core component being installed in working chamber and transfer tube core assembly pump.
Preferably, filter is provided between the in line check valve and oil bag.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that
1. the shape by changing spool, uses flat seal, in addition reducing the two between spool and valve body
Between sealing contact surface so that its sealing performance greatly promotes, prevent during the work time check valve there are the feelings of reversed oil return
Condition occurs, so that its reliability greatly improves, in addition the weight of spool itself reduces, the lighter overall weight of check valve makes
The fiting effect for obtaining spool and spring more optimizes, and improves its working efficiency in spool opening and closing.
2. hydraulically-controlled one-way valve is by matching the diameter of section size of the diameter of spool and ontology inner via hole
Mode to carry out spool radial limit, and spool is moved along body axis direction always, ensure that spool movement
Stability improves the stability of check valve, reduces vibration and noise, the recirculation hole there are six even layings on valve body end face,
It neither influences to limit the radial direction of spool, and liquid medium can be made to pass through flow-conveying groove and quickly through overcurrent speed is fast.
3. the spool upper end increases preformed hole, can directly be gone down with 118 ° of drill bit brill for machining
Straight forming, to guarantee bottom finish: simplifying processing technology, reduce difficulty of processing when manufacture.
4. compared with prior art, pervious valve body lower end is close to the mounting structure of fuel-displaced valve opening using plane adaptation
Sealing uses the conical surface now, O-ring seal is added on the conical surface, so that leakproofness improves again, and in machine-building tolerance
Play the role of a prevention, in general always it cannot be guaranteed that no error, always has several errors, setting is oblique
O-ring seal on face is in order to overcome this inherently existing error, in order not to allow body base to be directly against hydraulic pump
Close to bottom outlet face on, avoid under long-term work it is possible that abrasion, card resistance, be broken the problems such as, from the angle of long-time service
From the point of view of the improvement of the sealing structure substantially increase service life, along with O-ring seal improves anti-loosening property and close simultaneously
Sealing property.
5. what compared with prior art, the hydraulically-controlled one-way valve screw-fashion of former Electric hydraulic tool generallyd use is careless
It opens one and screws slot, screwed now using interior hexagonal, got a promotion so that screwing power, after screwing power promotion, itself
Leakproofness just gets a promotion, so that product is relatively reliable when in use.
6. hydraulic tool proposed by the present invention is compact-sized, it is used cooperatively above-mentioned check valve, simplifies processing technology, processing effect
Rate is high, further decreases manufacturing cost.
Detailed description of the invention
Fig. 1 is the cross-sectional view of in line check valve of the present invention；
Partial enlarged view at Fig. 2 Figure 1B；
Fig. 3 is the explosive view of in line check valve of the present invention；
Fig. 4 is the structure diagram of in line check valve of the present invention；
Fig. 5 is the partial sectional view of hydraulic tool of the present invention；
Fig. 6 is the partial enlarged view at Fig. 5 A；
Fig. 7 is the cross-sectional view of oil outlet one-way valve of the present invention；
Fig. 8 is the explosive view of oil outlet one-way valve of the present invention；
Fig. 9 is the structure diagram of in line check valve of the present invention.
In figure: 2- oil inlet passage；3- oil discharge passage；4- hydraulic cylinder；5- pressing mechanism；6- motor；The fuel-displaced valve body of 7-；8- goes out
Oil valve seat；9- oil outlet；11- through-hole；12- working chamber；14- boss；15- flowing hole；17- valve opening；19- inner sidewall；20-O type
Sealing ring；The 21- pump housing；23- valve seat；24- spool；25- spring；26- oil inlet valve body；27- primary sealing area；Hexagonal screwing in 28-
Tight slot；29- hydraulic end；30- regulation handle；31- pump core component；32- oil bag；34- filter；35- mounting groove；36- is led
Xiang Zhu；37- axial hole；The first tapered surface of 38-；The second tapered surface of 39-；40- piston rod；41- piston spring；42- centrifuging bearing
Seat.
Specific embodiment
The present invention is described further with specific embodiment below.
Embodiment one: as shown in Figs 1-4, a kind of check valve, including be fixed in valve opening 17 valve seat 23, valve body 26, with
And spool 24 and spring 25 between valve seat 23 and valve body 26 are set, the valve seat 23 opens up a through-hole 11, and spring 25 abuts
Between spool 24 and valve body 26,23 lower end surface of valve seat is convexly equipped with a boss 14, under the elastic force effect of the spring 25,
The plane of 24 upper end of spool can lean with the plane of the boss 14 and form primary sealing area 27, and the valve body 26 is opened
Equipped with inner sidewall 19 compatible with 24 shape size of spool, its described inner sidewall 19 can carry out radial limit and be made to spool 24
The spool 24 can be moved along its axis direction always, and 23 bottom end of valve seat opens up a through-hole 11, and 26 bottom end of valve body is equal
Several flowing holes 15 are furnished with, flowing hole 15 is connected to through-hole 11, and the hydraulic oil in the through-hole 11 is flowed out by flowing hole 15.
The spool 24 is changed instead of the ball support in background technique, steel ball, retaining ring, the structure of the spool 24 itself
Become, the design of its structure reduces the self weight of spool in contrast；The design of the primary sealing area 27 is so that spool 24 and valve body
Flat seal is formed under the action of the elastic force of above-mentioned spring 25 between 26, because the reason of flat seal, so as to spring bullet
The requirement of power substantially reduces, in addition the weight of spool itself is reduced along with the structure of spool uses plane so that spool and
Spring fiting effect more optimizes, because the frequency of the cooperative movement of the spring and spool of the check valve on hydraulic tool is very
It is high, the design so that spool itself weight, its work can be naturally greatly improved when Open-close sealing
Make efficiency.
This hydraulically-controlled one-way valve carries out diameter to spool in such a way that spool matches with clear size of opening in inlet valve body
To limit, so that spool is only capable of moving along axis direction, without radial movement occurs in the use process of check valve,
The movement of spool is relatively stable, sensitivity and high reliablity, is able to satisfy at present for check valve stability, sensitivity and reliability
Requirement, also improve the stability that check valve uses, reduce vibration and noise；In order to preferably process and in setting spool
24 upper surfaces have also opened up a directional hole.
Preferably, 26 bottom surface of valve body is the first tapered surface 38, and 26 lower end surface of oil inlet valve body is equally also provided with into
The compatible inclined-plane in 17 bottom surface of valve opening, 26 lower end surface of oil inlet valve body to take the form of inclined plane be equipped with sealing ring mounting groove, it is described into
O-ring seal 20 and O-ring seal mounting groove are additionally provided with below oil valve body 26, O-ring seal 20 is installed on O-ring seal installation
In slot, the oil inlet valve body 26 is extruded in the inlet valve on the conical surface of 17 inner wall of valve opening and to take the form of inclined plane by O-ring seal 20
Sealing is formed between 26 lower end surface of body.
By at this 26 lower end surface of oil inlet valve body and 17 bottom surface of valve opening be arranged to compatible inclined-plane, and one is added between
O-ring seal 20, avoid under long-term work it is possible that abrasion, card resistance, fracture the problems such as, from the angle of long-time service come
It sees, design substantially increases service life, and on its conical surface plus O-ring seal 20 improves leakproofness again, in valve seat 23
Under the action of, the valve body 26 is sealed on the second tapered surface 39 by O-ring seal 20, and is risen in machine-building tolerance
The effect prevented to one, in general always it cannot be guaranteed that no error, always has several errors, setting is first
O-ring seal 20 on tapered surface 38 is and to improve whole locking property to overcome this inherently existing error
Energy and sealing performance.
Preferably, mounting groove 35 compatible with 25 outer diameter size of spring is offered in the valve body 26, under mounting groove 35
Side offers axial hole 37, and the plane of 24 lower end of spool is convexly equipped with the guide post 36 being installed in spring 25, the spring
25 are connected in guide post 36 and mounting groove 35, and the guide post 36 of the spool 24 is by overcoming the elastic force of spring 25 to be depressed into axis
To at 37 position of hole, the design of the axial hole 37 can have the space of adaptation, improve to valve so that when guide post 36 is too long
The adaptability of core design.
Preferably, 26 bottom end of oil inlet valve body is uniformly distributed there are six fuel-displaced flowing hole 15 is used for, and further includes being set to oil inlet
The preset hole of the installation spring 25 of 26 bottom center of valve body, preset hole similarly can be used for fuel-displaced.
Preferably, interior hexagonal is offered on the oil inlet valve seat 23 and screw slot 28, screwed using interior hexagonal, so that rotation
Clamp force gets a promotion, and after screwing power promotion, the leakproofness of itself just gets a promotion, so that product itself is more safe and reliable.
The working principle of in line check valve: oil liquid is entered in oil inlet valve seat 23 by valve opening 17, and spool 24 is opened, described
Oil liquid in through-hole is flowed out by flowing hole 15.
A kind of hydraulic tool being equipped with above-mentioned check valve, as seen in figs. 5-6, including the pump housing 21, the pump housing 21 are plunger
Pump, the oil discharge passage 3 pump housing 21 the interior oil inlet passage 2 for being equipped with connection oil bag 32 and be connected to hydraulic cylinder 4,2 He of oil inlet passage
In line check valve and oil outlet one-way valve, the check valve of the oil inlet passage 2 or oil discharge passage 3 are separately installed in oil discharge passage 3
Installation end is equipped with tapped valve opening 17, and the valve seat 23 of the check valve is threadedly attached in the valve opening 17, in valve
When seat 23 screws, the plane that the boss 14 is connected to 24 upper end of spool forms sealing, is equipped with check valve in valve opening 17, described
Offer working chamber 12 in the pump housing 21, oil inlet passage 2 is connected to working chamber 12 with oil discharge passage 3, be equipped in the working chamber 12 by
Regulation handle 30 drives the pump core component 31 to move back and forth, and pump core component 31 is connected to check valve；Tool in the pump housing 21
There is hydraulic cylinder 4,21 rear end of the pump housing is provided with the oil bag 32 for storing hydraulic oil, between the hydraulic cylinder 4 and oil bag 32
It is connected by oil circuit, drain path is equipped between the hydraulic cylinder 4 and oil bag 32, drain path is equipped with a relief valve, institute
State 21 lower end of the pump housing and be connected with regulation handle 30 for controlling relief valve and motor opening and closing, be additionally provided with below the pump housing 21 by
The pressing mechanism 5 in hydraulic oil indentation hydraulic cylinder 4 in oil bag 32, pressing mechanism 5 includes the pump core being installed in working chamber 12
The motor 6 that component 31 and transfer tube core assembly 31 pump, pump core component 31 include that piston rod 40 and setting exist
The piston spring 41 of 40 top of piston rod has piston rod 40 always and moves up and down under the action of 41 elastic force of piston spring
Trend, centrifuging bearing seat 42 is equipped with below the piston rod 40, when Electric hydraulic tool at work, drive regulation handle 30
The motor 6 of pressing mechanism 5 and power supply are connected, make 42 Work Promote piston rod 40 of centrifuging bearing seat, so that power oil is pressed into
Into the cavity of hydraulic cylinder 4.
Offer working chamber 12 in the pump housing 21, the oil outlet of the oil inlet of above-mentioned oil inlet passage 2 and oil discharge passage 3 with
Working chamber 12 is connected.
A kind of variable displacement plunger pump [application number disclosed in Chinese patent literature data can be used in plunger pump
201220146314.9；Authorization Notice No.: CN202612062U], other hydraulic pumps can also be used.
Preferably, the inlet end and an outlet end of the oil circuit all has check valve, makes hydraulic oil by oil bag by check valve
32 enter in the hydraulic cylinder 4.So that hydraulic oil is entered hydraulic cylinder 4 from oil bag 32 always by the way that check valve is arranged, prevents liquid
Pressure oil reflux, strengthens pressure holding effect.
4 side of hydraulic cylinder is equipped with hydraulic end 29, and hydraulic end 29 is card pressure head, hydraulic end 29 and liquid
The piston rod 40 of cylinder pressure 4 is fixedly connected with, and spring is equipped between the cylinder body and piston rod 40 of oil cylinder to be made under the effect of spring force
Piston rod has the trend of past oil cylinder medial movement always.
Preferably, it is provided with filter 34 between the in line check valve and oil bag 32, is to prevent sundries foreign matter from entering pump
Body 21 generates blocking.
Working principle: by regulation handle 30 press when, by motor 6 drive pump core component 31 work, pump core component 31 to
On take up, sealed volume in working chamber 12 increases, and pressure reduces, and the hydraulic oil in oil bag 32 flows into oil inlet passage 2, and will be into
Spool in the in line check valve of oil port opens, and oil liquid will by oil inlet passage 2 to working chamber 12, unclamping regulation handle 30
Pump core component 31 takes up downwards, and the sealed volume in working chamber 12 is reduced, and the oil liquid in working chamber 12 is squeezed pump core component 31
It depresses and collects to oil discharge passage 3, the spool in the oil outlet one-way valve of oil outlet is opened and enters oil outlet one-way valve by oil liquid
Flow channel is flowed into hydraulic cylinder 4 along flowing hole, drives hydraulic end 29 to move by hydraulic cylinder 4.
Embodiment two: the present embodiment and embodiment one are almost the same, the difference lies in that as illustrated in figs. 5-7, the present embodiment
In hydraulically-controlled one-way valve be used for pump core component 31 fuel-displaced place, the oil outlet one-way valve being set in oil discharge passage 3 include
Oil valve body 7 and delivery valve seat 8, the delivery valve seat 8 is interior to be equipped with oil outlet 9, as shown in fig. 7,8 upper surface of the delivery valve seat is in
Inclined surface, O-ring seal 20 is installed on inclined surface, and delivery valve seat 8 is extruded in fuel-displaced valve opening inner wall cone by O-ring seal 20
On face formed sealing, the sealing at this be in order to prevent oil liquid from oil outlet 9 pour generation leakage.The oil liquid passes through oil outlet
9 enter in delivery valve seat 8, and spool 24 is opened, and the oil liquid enters flow channel 18, flow out along flowing hole 15.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore: it is all according to
The equivalence changes that structure of the invention, shape, principle are done, should all be covered by within protection scope of the present invention.
Claims (8)
1. a kind of check valve for hydraulic tool, it is characterised in that: including valve seat (23), the valve body being fixed in valve opening (17)
(26) and spool (24) and spring (25) between valve seat (23) and valve body (26) is set, the valve seat (23) opens up one
Through-hole (11), the spring (25) are connected between spool (24) and valve body (26), under the elastic force effect of the spring (25),
The plane of spool (24) upper end can lean with the valve seat (23) lower end surface and form primary sealing area (27)；
Valve body (26) bottom end is evenly equipped with several flowing holes (15), when spool (24) upper surface and valve seat (23) lower end surface point
From when, flowing hole (15) is connected to through-hole (11), the medium in the through-hole (11) pass through flowing hole (15) flow out.
2. a kind of check valve for hydraulic tool according to claim 1, it is characterised in that: opened in the valve body (26)
Equipped with inner sidewall (19) compatible with spool (24) shape size, the inner sidewall (19) carries out radial limit to spool (24)
It and move the spool (24) can along its axis direction always.
3. a kind of check valve for hydraulic tool according to claim 1, it is characterised in that: spool (24) lower end
Plane be convexly equipped with the guide post (36) being installed in spring (25), offered in the valve body (26) big with spring (25) outer diameter
Small compatible mounting groove (35), the spring (25) are connected in guide post (36) and mounting groove (35).
4. a kind of check valve for hydraulic tool according to claim 1 or 2 or 3, it is characterised in that: the valve body
(26) bottom surface is the first tapered surface (38), is installed on O-ring seal (20) on first tapered surface (38).
5. a kind of check valve for hydraulic tool according to claim 4, it is characterised in that: valve seat (23) upper end
It offers interior hexagonal to screw slot (28), the outer spiral shell for being fixed on valve opening (17) upper inner wall is equipped on the outside of the valve seat (23)
Line.
6. a kind of check valve for hydraulic tool according to claim 5, it is characterised in that: valve seat (23) lower end
Face is convexly equipped with a boss (14), and the primary sealing area (27) passes through the plane and the plane phase of boss (14) of spool (24) upper end
It abuts and is formed.
7. a kind of hydraulic tool, including the pump housing (21), it is characterised in that: the pump housing (21) rear end is provided with hydraulic for storing
The oil bag (32) of oil, be equipped in the pump housing (21) oil inlet passage (2) of connection oil bag (32) be connected to the fuel-displaced of hydraulic cylinder (4)
In line check valve and oil outlet one-way valve, in line check valve are separately installed in channel (3), oil inlet passage (2) and oil discharge passage (3)
Or/and oil outlet one-way valve is the check valve described in any one of claims 1-6 for hydraulic tool, the oil inlet passage (2)
Or the check valve installation end of oil discharge passage (3) is equipped with tapped valve opening (17), the valve seat (23) of the check valve passes through spiral shell
Line is connected in the valve opening (17), and when valve seat (23) screws, the boss (14) is connected to the plane of spool (24) upper end
Sealing is formed, valve opening (17) bottom surface is equipped with compatible second tapered surface of the first tapered surface (38) with valve body (26)
(39), under the action of valve seat (23), the valve body (26) is sealed on the second tapered surface (39) by O-ring seal (20)；
It is offered working chamber (12) in the pump housing (21), oil inlet passage (2) is connected to working chamber (12), institute with oil discharge passage (3)
State the pump core component (31) for being equipped with and moving back and forth in working chamber (12)；Hydraulic cylinder (4) are equipped in the pump housing (21), it is described hydraulic
Drain path is equipped between cylinder (4) and oil bag (32), drain path is equipped with a relief valve, and the pump housing (21) lower end is connected with
For controlling the regulation handle (30) of relief valve and motor opening and closing, it is additionally provided with below the pump housing (21) by the liquid in oil bag (32)
Pressure oil is pressed into the pressing mechanism (5) in hydraulic cylinder (4), and pressing mechanism (5) includes the pump core component being installed in working chamber (12)
(31) and the motor (6) that pumps of transfer tube core assembly (31).
8. a kind of check valve for hydraulic tool according to claim 7, it is characterised in that: the in line check valve and
Filter (34) are provided between oil bag (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811385746.3A CN109268334A (en) | 2018-11-20 | 2018-11-20 | A kind of check valve and hydraulic tool for hydraulic tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811385746.3A CN109268334A (en) | 2018-11-20 | 2018-11-20 | A kind of check valve and hydraulic tool for hydraulic tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109268334A true CN109268334A (en) | 2019-01-25 |
Family
ID=65189633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811385746.3A Pending CN109268334A (en) | 2018-11-20 | 2018-11-20 | A kind of check valve and hydraulic tool for hydraulic tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109268334A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107556A (en) * | 2019-05-24 | 2019-08-09 | 台州巨力工具股份有限公司 | A kind of hydraulic tool |
| CN110323389A (en) * | 2019-04-10 | 2019-10-11 | 重庆金康动力新能源有限公司 | Pressure relief pipe, battery pressure relief system and battery case |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070079873A1 (en) * | 2005-10-11 | 2007-04-12 | Hans Sasserath & Co. Kg | Pipe disconnector with increased sealing power |
| CN200989479Y (en) * | 2006-12-18 | 2007-12-12 | 宝山钢铁股份有限公司 | Conic spool oneyway valve |
| CN101440885A (en) * | 2008-12-17 | 2009-05-27 | 蚌埠金威滤清器有限公司 | One-way valve of manual oil pump |
| CN202252156U (en) * | 2011-10-24 | 2012-05-30 | 十堰飞骏汽车零部件有限公司 | One-way valve of oil transfer pump |
| CN202597788U (en) * | 2012-03-28 | 2012-12-12 | 浙江澳川液压器材有限公司 | Hydraulic check valve |
| CN103072124A (en) * | 2012-12-27 | 2013-05-01 | 台州巨力工具有限公司 | Electric hydraulic tool |
| CN103104718A (en) * | 2011-11-09 | 2013-05-15 | 江西福事特液压有限公司 | Flaring type high-pressure shuttle valve |
| CN203948362U (en) * | 2014-06-28 | 2014-11-19 | 台州巨力工具有限公司 | Hydraulically-controlled one-way valve |
| CN204403479U (en) * | 2014-12-26 | 2015-06-17 | 朱裕生 | A kind of Decompression valves |
| CN204647444U (en) * | 2015-02-27 | 2015-09-16 | 陕西法士特齿轮有限责任公司 | A kind of hydrodynamic retarding organ pipe connects angle check valve |
| US20170158473A1 (en) * | 2015-03-04 | 2017-06-08 | Hangzhou Yinjiang Machinery Manufacture Co., Ltd. | Hydraulic jack capable of quickly lifting load |
| CN206429470U (en) * | 2017-01-22 | 2017-08-22 | 石家庄市液压有限责任公司 | A kind of hydraulic control one-way valve |
| CN107448762A (en) * | 2017-09-29 | 2017-12-08 | 广东鸿荣重工股份有限公司 | Automatic lubricant pump for hydraulic test |
| CN108626444A (en) * | 2017-03-21 | 2018-10-09 | 荣成市荣利阀门有限公司 | A kind of forging high-pressure check valve |
| CN108644105A (en) * | 2018-06-12 | 2018-10-12 | 台州巨力工具有限公司 | A kind of check valve and hydraulic tool for hydraulic tool |
| CN209294158U (en) * | 2018-11-20 | 2019-08-23 | 台州巨力工具股份有限公司 | A kind of check valve and hydraulic tool for hydraulic tool |
-
2018
- 2018-11-20 CN CN201811385746.3A patent/CN109268334A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070079873A1 (en) * | 2005-10-11 | 2007-04-12 | Hans Sasserath & Co. Kg | Pipe disconnector with increased sealing power |
| CN200989479Y (en) * | 2006-12-18 | 2007-12-12 | 宝山钢铁股份有限公司 | Conic spool oneyway valve |
| CN101440885A (en) * | 2008-12-17 | 2009-05-27 | 蚌埠金威滤清器有限公司 | One-way valve of manual oil pump |
| CN202252156U (en) * | 2011-10-24 | 2012-05-30 | 十堰飞骏汽车零部件有限公司 | One-way valve of oil transfer pump |
| CN103104718A (en) * | 2011-11-09 | 2013-05-15 | 江西福事特液压有限公司 | Flaring type high-pressure shuttle valve |
| CN202597788U (en) * | 2012-03-28 | 2012-12-12 | 浙江澳川液压器材有限公司 | Hydraulic check valve |
| CN103072124A (en) * | 2012-12-27 | 2013-05-01 | 台州巨力工具有限公司 | Electric hydraulic tool |
| CN203948362U (en) * | 2014-06-28 | 2014-11-19 | 台州巨力工具有限公司 | Hydraulically-controlled one-way valve |
| CN204403479U (en) * | 2014-12-26 | 2015-06-17 | 朱裕生 | A kind of Decompression valves |
| CN204647444U (en) * | 2015-02-27 | 2015-09-16 | 陕西法士特齿轮有限责任公司 | A kind of hydrodynamic retarding organ pipe connects angle check valve |
| US20170158473A1 (en) * | 2015-03-04 | 2017-06-08 | Hangzhou Yinjiang Machinery Manufacture Co., Ltd. | Hydraulic jack capable of quickly lifting load |
| CN206429470U (en) * | 2017-01-22 | 2017-08-22 | 石家庄市液压有限责任公司 | A kind of hydraulic control one-way valve |
| CN108626444A (en) * | 2017-03-21 | 2018-10-09 | 荣成市荣利阀门有限公司 | A kind of forging high-pressure check valve |
| CN107448762A (en) * | 2017-09-29 | 2017-12-08 | 广东鸿荣重工股份有限公司 | Automatic lubricant pump for hydraulic test |
| CN108644105A (en) * | 2018-06-12 | 2018-10-12 | 台州巨力工具有限公司 | A kind of check valve and hydraulic tool for hydraulic tool |
| CN209294158U (en) * | 2018-11-20 | 2019-08-23 | 台州巨力工具股份有限公司 | A kind of check valve and hydraulic tool for hydraulic tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323389A (en) * | 2019-04-10 | 2019-10-11 | 重庆金康动力新能源有限公司 | Pressure relief pipe, battery pressure relief system and battery case |
| CN110107556A (en) * | 2019-05-24 | 2019-08-09 | 台州巨力工具股份有限公司 | A kind of hydraulic tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109268334A (en) | A kind of check valve and hydraulic tool for hydraulic tool | |
| CN107771255A (en) | The hydraulic compression stopper element of the hydraulic damper for vehicle suspension with decompressor | |
| CN110131477B (en) | Multistage throttle labyrinth relief pressure valve | |
| US20210071921A1 (en) | Electronic expansion valve | |
| CN209294158U (en) | A kind of check valve and hydraulic tool for hydraulic tool | |
| CN105134538B (en) | A kind of volume adjustable hydraulic pump, the Variable Control piston of motor and its application | |
| CN205278476U (en) | Electronic expansion valve | |
| CN105673373B (en) | No load discharge adjustable constant-pressure axial variable displacement plunger pump | |
| CN101956731B (en) | Hydraulic control device and pressure switch | |
| CN106286456A (en) | A kind of hydraulic control one-way valve | |
| CN216242310U (en) | Electronic expansion valve | |
| CN108150472B (en) | A kind of buffer overflow valve | |
| CN111188747B (en) | Valve plate with buffer mechanism and plunger hydraulic pump | |
| CN109340100A (en) | A kind of plunger pump | |
| CN111005851B (en) | Displacement feedback variable mechanism of hydraulic plunger pump and hydraulic plunger pump | |
| CN210461820U (en) | Base and fluid pump using same | |
| CN107859760A (en) | A kind of two-way shut-off valve | |
| CN208535252U (en) | Low leakage flow proportional control valve and oil pump solenoid valve with the control valve | |
| CN210422902U (en) | Antipollution dual-redundancy variable plunger pump | |
| CN207569263U (en) | A kind of two-way shut-off valve | |
| CN109162977B (en) | Rotary cushion valve | |
| CN110836208A (en) | Unloading stop valve | |
| CN207848426U (en) | A kind of hydraulic drive two way seal the needle valve | |
| CN208503132U (en) | Overflow valve | |
| CN209743692U (en) | Overflow valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 317608 Taizhou Juli Tools Co., Ltd., Xuanmen Industrial City, Lupu Town, Yuhuan City, Taizhou City, Zhejiang Province Applicant after: Taizhou Juli Tools Co., Ltd. Address before: 317605 Xuanmen Industrial City, Lupu Town, Yuhuan City, Taizhou City, Zhejiang Province Applicant before: Taizhou Juli Tool Co., Ltd. |