CN204610409U - A kind of control valve - Google Patents
A kind of control valve Download PDFInfo
- Publication number
- CN204610409U CN204610409U CN201520288814.XU CN201520288814U CN204610409U CN 204610409 U CN204610409 U CN 204610409U CN 201520288814 U CN201520288814 U CN 201520288814U CN 204610409 U CN204610409 U CN 204610409U
- Authority
- CN
- China
- Prior art keywords
- spring
- safe
- seat
- valve pocket
- guide rod
- 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
Links
Landscapes
- Safety Valves (AREA)
Abstract
The utility model provides a kind of control valve, belongs to technical field of hydraulic pressure.It solve the problem how making the spool of control valve more stable.This control valve comprises valve body, safe valve pocket and commutation valve pocket, valve body has the filler opening be connected with commutation valve pocket, actuator port, return opening and pressure relief opening, pressure relief opening communicates with return opening, be provided with in commutation valve pocket and can slide the sliding stem that filler opening is communicated with actuator port or return opening along commutation valve pocket, safe valve pocket is communicated with return opening, fitting seat and safe spool is provided with in safe valve pocket, there is in fitting seat the overflow hole that filler opening is communicated with safe valve pocket, safe spool has guide rod, the tail end of guide rod is provided with spring seat, in spring seat, there is pilot hole, guide rod is located in pilot hole and also can slides along pilot hole, guide rod is arranged with spring one, one end of spring one is resisted against on spring seat, the other end of spring one is resisted against on safe spool and also safe spool can be made to block overflow hole.
Description
Technical field
The utility model belongs to technical field of hydraulic pressure, relates to a kind of valve, particularly a kind of control valve.
Background technique
Hydraulic control valve is the element being used for controlling fluid pressure, flow and direction in Hydraulic Power Transmission System or hydraulic control system.Be usually used in the hydraulic system Automated condtrol in each fields such as molding machine, lathe, metallurgy, mine, farm machinery, application is extensive.Such as, control valve coordinates with series flow control valve, can be used for controlling the start and stop of rice harvester winder; Control valve coordinates with pilot valve, can be used for controlling the oil sources of pilot valve; Control valve coordinates with parking system, can be used for controlling the clutch action etc. of running mechanism.
In prior art, general control valve internal structure design is complicated, mangetic core assembly poor stability, when carrying out hydraulic pressure unloading, spool can produce vibration under the brute force attack of pressure oil, thus sends ear-piercing whistle, produce great noise, affect the usability of control valve.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of control valve, and the technical problem that the utility model solves how to make the spool of control valve more stable.
The purpose of this utility model realizes by following technical proposal: a kind of control valve, it is characterized in that, comprise valve body, be positioned at safe valve pocket and the commutation valve pocket of valve body, described valve body has the filler opening be connected with commutation valve pocket, actuator port, return opening and pressure relief opening, described pressure relief opening is connected with return opening, sliding stem is provided with in described commutation valve pocket, described sliding stem can slide along commutation valve pocket and filler opening is connected with actuator port or return opening, described safe valve pocket is connected with return opening, fitting seat and safe spool is provided with in described safe valve pocket, there is in described fitting seat the overflow hole that filler opening is connected with safe valve pocket, described safe spool has guide rod, the tail end of described guide rod is provided with spring seat, in described spring seat, there is pilot hole, described guide rod is located in pilot hole and also can slides along pilot hole, described guide rod is arranged with spring one, one end of described spring one is resisted against on spring seat, the other end of described spring one is resisted against on safe spool and also safe spool can be made to block overflow hole.
Be different from prior art, this control valve has the spring seat of pilot hole by arranging, guide rod on safe spool coordinates with pilot hole and forms the stable guide structure that leads, make safe spool in safe valve pocket can smooth sliding under Oil shocking, thus make the safe spool of control valve more stable, and then avoid and occur because of safe disc vibration phenomenon of uttering long and high-pitched sounds.In addition, when the oil pressure in valve pocket that commutates is too high, fluid can flow into return opening pressure release from pressure relief opening, thus prevents sliding stem and valve seal place from causing leakage because being subject to fluid and extruding.
In above-mentioned control valve, described safe spool comprises conically conical head, the Outside diameter of described conical head is greater than the diameter of overflow hole, there is between described conical head and guide rod ring-type shoulder block, the external diameter of described guide rod is less than the external diameter of shoulder block, one end of described spring one is resisted against on spring seat, and the other end of described spring one is resisted against on shoulder block and also conical head can be made to be inserted in overflow hole.Safe spool is being opened or in closing process, conical head can be released fast or find overflow hole accurately, is less likely to occur to coordinate fault, is conducive to the usability improving control valve.
In above-mentioned control valve, the port of described safe valve pocket is fixed with screw plug, in described screw plug, there is mounting hole, described spring seat is positioned at described mounting hole, described screw plug has been threaded adjustment stud, described adjustment stud threaded one end is connected with locking nut, and the described adjustment stud the other end penetrates into mounting hole and leans on spring seat, and described adjustment stud can make fitting seat slide along mounting hole.Make spring seat slip carry out the decrement of control spring one by screwing adjustment stud, thus play the effect of adjusting control valve setting pressure.
In above-mentioned control valve, described guide rod is arranged with seal ring and pad, described pad side is resisted against on spring seat, and the opposite side of described pad is resisted against on spring one, and described seal ring is between spring seat and pad and be embedded on spring seat.Seal ring and pad play seal action on the one hand, are conducive to making guide rod more stable in sliding process on the other hand, not easily rock.
In above-mentioned control valve, described valve body is fixed with mounting cover, in described mounting cover, there is installation cavity, the ball seat of column is provided with in described installation cavity, on described ball seat, tool radially runs through the through hole of ball seat, the two-port place of described through hole is respectively arranged with steel ball, spring two is provided with in described through hole, the two ends of described spring two are resisted against on steel ball respectively, the inwall of described installation cavity is disposed with the depressed part one of ring-type and the depressed part two of ring-type along the direction of axis line of ball seat, described steel ball can be fastened in depressed part one or depressed part two, valve body is stretched out in one end of described sliding stem, the other end of described sliding stem to extend in installation cavity and is connected with ball seat.When the sliding stem place in the valve pocket that commutates and initial position, steel ball is fastened in depressed part one; When the sliding stem in the valve pocket that commutates is from initial position mobile working position, the elastic force effect that steel ball overcomes spring two moves in depressed part two.
In above-mentioned control valve, the periphery of described spring seat arranges annular groove, is embedded with O shape circle and back-up ring in described groove, and described O shape circle and back-up ring are between spring seat and screw plug.O shape circle and back-up ring are arranged between spring seat and screw plug and can prevent fluid from letting out from pilot hole.
Compared with prior art, this control valve has the following advantages: this control valve has the spring seat of pilot hole by arranging, guide rod coordinates with pilot hole and forms guide structure and have the safe spool of conical nose, make safe spool in safe valve pocket can smooth sliding under Oil shocking, thus make the safe spool of control valve more stable, and then avoid and occur uttering long and high-pitched sounds phenomenon because of safe disc vibration, improve the overall performance of control valve.
Accompanying drawing explanation
Fig. 1 is the structural representation in a direction of this control valve.
Fig. 2 is the structural representation in another direction of this control valve.
Fig. 3 is the structural representation that this control valve is in initial position.
Fig. 4 is the structural representation that this control valve is in working position.
Fig. 5 is the partial enlarged drawing located in Fig. 4.
Fig. 6 is the principle schematic of this control valve.
In figure, 1, valve body; 2, safe valve pocket; 3, commutate valve pocket; 4, filler opening; 5, actuator port; 6, return opening; 7, pressure relief opening; 8, sliding stem; 9, fitting seat; 10, safe spool; 10, conical head; 10b, shoulder block; 11, overflow hole; 12, guide rod; 13, spring seat; 14, pilot hole; 15, spring one; 16, screw plug; 17, mounting hole; 18, stud 18 is adjusted; 19, locking nut; 20, seal ring; 21, pad; 22, mounting cover; 23, installation cavity; 24, ball seat; 25, through hole; 26, steel ball; 27, depressed part one; 28, depressed part two; 29, spring two; 30, O shape circle; 31, back-up ring.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
This control valve comprises valve body 1, safe valve pocket 2, commutation valve pocket 3, filler opening 4, actuator port 5, return opening 6, pressure relief opening 7, sliding stem 8, fitting seat 9, safe spool 10, conical head 10, shoulder block 10b, overflow hole 11, guide rod 12, spring seat 13, pilot hole 14, spring 1, screw plug 16, mounting hole 17, adjustment stud 1818, locking nut 19, seal ring 20, pad 21, mounting cover 22, installation cavity 23, ball seat 24, through hole 25, steel ball 26, depressed part 1, depressed part 2 28, spring 2 29, O shape circle 30, back-up ring 31.
Specifically, as shown in Figure 1, Figure 2 and Figure 3, this control valve comprises valve body 1, is positioned at the safe valve pocket 2 of valve body 1 and commutation valve pocket 3, valve body 1 have the filler opening 4, actuator port 5, return opening 6 and the pressure relief opening 7 that are connected with commutation valve pocket 3, pressure relief opening 7 is connected with return opening 6, be provided with sliding stem 8 in commutation valve pocket 3, sliding stem 8 can slide along commutation valve pocket 3 and filler opening 4 is connected with actuator port 5 or return opening 6, and safe valve pocket 2 is connected with return opening 6.Be provided with fitting seat 9 and safe spool 10 in safe valve pocket 2, safe spool 10 has guide rod 12, there is in fitting seat 9 overflow hole 11 that filler opening 4 is connected with safe valve pocket 2.
As shown in Figure 3 and Figure 4, the port of safe valve pocket 2 is fixed with screw plug 16, has mounting hole 17 in screw plug 16, is provided with spring seat 13 in mounting hole 17, have pilot hole 14 in spring seat 13, guide rod 12 is located in pilot hole 14 and also can slides along pilot hole 14.Safe spool 10 comprises conically conical head 10, the Outside diameter of conical head 10 is greater than the diameter of overflow hole 11, there is between conical head 10 and guide rod 12 ring-type shoulder block 10b, the external diameter of guide rod 12 is less than the external diameter of shoulder block 10b, guide rod 12 is arranged with spring 1, one end of spring 1 is resisted against on spring seat 13, and the other end of spring 1 to be resisted against on shoulder block 10b and conical head 10 can be made to be inserted in overflow hole 11 and block overflow hole 11.
Screw plug 16 has been threaded adjustment stud 18, and adjustment stud 18 threaded one end is connected with locking nut 19, and adjustment stud 18 the other end penetrates into mounting hole 17 and leans on spring seat 13, and adjustment stud 18 can make fitting seat 9 slide along mounting hole 17.The O shape that spring seat 13 is provided with for preventing fluid from leaking outside encloses 30 and back-up ring 31.As shown in Figure 5, guide rod 12 is also arranged with seal ring 20 and pad 21, pad 21 side is resisted against on spring seat 13, and the opposite side of pad 21 is resisted against on spring 1, and seal ring 20 is between spring seat 13 and pad 21 and be embedded on spring seat 13.
Valve body 1 is fixed with mounting cover 22, there is in mounting cover 22 installation cavity 23, the ball seat 24 of column is provided with in installation cavity 23, on ball seat 24, tool radially runs through the through hole 25 of ball seat 24, the two-port place of through hole 25 is respectively arranged with steel ball 26, spring 2 29 is provided with in through hole 25, the two ends of spring 2 29 are resisted against on steel ball 26 respectively, the inwall of installation cavity 23 is disposed with the depressed part 1 of ring-type and the depressed part 2 28 of ring-type along the direction of axis line of ball seat 24, steel ball 26 can be fastened in depressed part 1 or depressed part 2 28, valve body 1 is stretched out in one end of sliding stem 8, the other end of sliding stem 8 to extend in installation cavity 23 and is connected with ball seat 24.
As shown in Fig. 3, Fig. 4 and Fig. 6, the working principle of this control valve is: when sliding stem 8 place in the valve pocket 3 that commutates and initial position, filler opening 4, actuator port 5, return opening 6 are all communicated with; When the sliding stem 8 in the valve pocket 3 that commutates is in working position; filler opening 4 is communicated with actuator port 5; be not communicated with return opening 6; now; when the oil pressure of execution architecture is greater than the elastic force of safe valve pocket 2 inner spring 1, safe spool 10 is opened, and filler opening 4 is communicated with return opening 6 by overflow hole 11; control valve carries out off-load, for the protection of the safety of hydraulic system.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ valve body 1 herein, safe valve pocket 2, commutation valve pocket 3, filler opening 4, actuator port 5, return opening 6, pressure relief opening 7, sliding stem 8, fitting seat 9, safe spool 10, conical head 10, shoulder block 10b, overflow hole 11, guide rod 12, spring seat 13, pilot hole 14, spring 1, screw plug 16, mounting hole 17, adjustment stud 1818, locking nut 19, seal ring 20, pad 21, mounting cover 22, installation cavity 23, ball seat 24, through hole 25, steel ball 26, depressed part 1, depressed part 2 28, spring 2 29, O shape circle 30, term such as back-up ring 31 grade, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (6)
1. a control valve, it is characterized in that, comprise valve body (1), be positioned at safe valve pocket (2) and commutation valve pocket (3) of valve body (1), described valve body (1) has the filler opening (4) be connected with commutation valve pocket (3), actuator port (5), return opening (6) and pressure relief opening (7), described pressure relief opening (7) is connected with return opening (6), sliding stem (8) is provided with in described commutation valve pocket (3), described sliding stem (8) can slide along commutation valve pocket (3) and filler opening (4) is connected with actuator port (5) or return opening (6), described safe valve pocket (2) is connected with return opening (6), fitting seat (9) and safe spool (10) is provided with in described safe valve pocket (2), there is in described fitting seat (9) overflow hole (11) that filler opening (4) is connected with safe valve pocket (2), described safe spool (10) has guide rod (12), the tail end of described guide rod (12) is provided with spring seat (13), there is in described spring seat (13) pilot hole (14), described guide rod (12) is located in pilot hole (14) and also can slides along pilot hole (14), described guide rod (12) is arranged with spring one (15), one end of described spring one (15) is resisted against on spring seat (13), the other end of described spring one (15) is resisted against safe spool (10) above also can make safe spool (10) block overflow hole (11).
2. control valve according to claim 1, it is characterized in that, described safe spool (10) comprises conically conical head (10), the Outside diameter of described conical head (10) is greater than the diameter of overflow hole (11), there is between described conical head (10) and guide rod (12) ring-type shoulder block (10b), the external diameter of described guide rod (12) is less than the external diameter of shoulder block (10b), one end of described spring one (15) is resisted against on spring seat (13), the other end of described spring one (15) is resisted against shoulder block (10b) above also can make conical head (10) be inserted in overflow hole (11).
3. control valve according to claim 1 and 2, it is characterized in that, the port of described safe valve pocket (2) is fixed with screw plug (16), there is in described screw plug (16) mounting hole (17), described spring seat (13) is positioned at described mounting hole (17), described screw plug (16) has been threaded adjustment stud (18), described adjustment stud (18) threaded one end is connected with locking nut (19), described adjustment stud (18) the other end penetrates into mounting hole (17) and leans on spring seat (13), described adjustment stud (18) can make fitting seat (9) slide along mounting hole (17).
4. control valve according to claim 1 and 2, it is characterized in that, described guide rod (12) is arranged with seal ring (20) and pad (21), described pad (21) side is resisted against on spring seat (13), the opposite side of described pad (21) is resisted against on spring one (15), and described seal ring (20) to be positioned between spring seat (13) and pad (21) and to be embedded on spring seat (13).
5. control valve according to claim 1 and 2, it is characterized in that, described valve body (1) is fixed with mounting cover (22), there is in described mounting cover (22) installation cavity (23), the ball seat (24) of column is provided with in described installation cavity (23), the upper tool of described ball seat (24) radially runs through the through hole (25) of ball seat (24), the two-port place of described through hole (25) is respectively arranged with steel ball (26), spring two (29) is provided with in described through hole (25), the two ends of described spring two (29) are resisted against on steel ball (26) respectively, the inwall of described installation cavity (23) is disposed with the depressed part one (27) of ring-type and the depressed part two (28) of ring-type along the direction of axis line of ball seat (24), described steel ball (26) can be fastened in depressed part one (27) or depressed part two (28), valve body (1) is stretched out in one end of described sliding stem (8), the other end of described sliding stem (8) to extend in installation cavity (23) and is connected with ball seat (24).
6. control valve according to claim 1 and 2, it is characterized in that, the periphery of described spring seat (13) arranges annular groove, be embedded with O shape circle (30) and back-up ring (33) in described groove, described O shape circle (30) and back-up ring (33) are positioned between spring seat (13) and screw plug (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520288814.XU CN204610409U (en) | 2015-05-06 | 2015-05-06 | A kind of control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520288814.XU CN204610409U (en) | 2015-05-06 | 2015-05-06 | A kind of control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204610409U true CN204610409U (en) | 2015-09-02 |
Family
ID=53962978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520288814.XU Active CN204610409U (en) | 2015-05-06 | 2015-05-06 | A kind of control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204610409U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723692A (en) * | 2018-12-18 | 2019-05-07 | 浙江华益精密机械股份有限公司 | Pressure-control valve |
| CN117161159A (en) * | 2023-11-03 | 2023-12-05 | 南通尧成机械设备制造有限公司 | Hydraulic control loop device and method for lower die locking structure of bending machine |
-
2015
- 2015-05-06 CN CN201520288814.XU patent/CN204610409U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723692A (en) * | 2018-12-18 | 2019-05-07 | 浙江华益精密机械股份有限公司 | Pressure-control valve |
| CN109723692B (en) * | 2018-12-18 | 2023-11-03 | 浙江三尚智迪科技有限公司 | pressure control valve |
| CN117161159A (en) * | 2023-11-03 | 2023-12-05 | 南通尧成机械设备制造有限公司 | Hydraulic control loop device and method for lower die locking structure of bending machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102444637B (en) | Plug-in overflow valve | |
| CN102444733B (en) | Self-buffering multistage safety valve | |
| CN102287412B (en) | Ultra-high pressure proportional relief valve | |
| CN204610409U (en) | A kind of control valve | |
| CN201753790U (en) | Safety valve for multi-way valve | |
| CN203322343U (en) | Direct-acting overflow valve | |
| CN201627987U (en) | Cutoff one-way valve | |
| CN103303282B (en) | Motor vehicle braking system | |
| CN103851241A (en) | Direct-acting overflow valve | |
| CN202301250U (en) | Ultrahigh pressure proportional relief valve | |
| CN204573403U (en) | One-way throttle pipe joint | |
| CN102235394A (en) | Integrated valve with oil circuit selection function for controlling hydraulic motor brake | |
| CN107401576A (en) | A kind of pantograph damper | |
| CN202597334U (en) | Buffering safety valve | |
| CN201934109U (en) | Ultra-large-flow safety valve | |
| CN204436923U (en) | A kind of mechanical throttle | |
| CN205047560U (en) | Balanced valve | |
| CN204533020U (en) | A kind of integrated multifunction hydraulic element | |
| CN203335920U (en) | Manual ball valve | |
| CN201621223U (en) | Shock absorber hydraulic cushion mechanism | |
| CN204110017U (en) | The integral type upper piston of air brake valve | |
| CN204985878U (en) | Outer accuse type structure of stack formula hydraulically controlled check valve | |
| CN205639159U (en) | Hydraulic actuator with anti -lock effect | |
| CN203421194U (en) | High-pressure pilot-type regulating valve | |
| CN105570502A (en) | Fast unloading safety valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |