CN220668434U - Control valve - Google Patents

Abstract

The application relates to a control valve relates to the technical field of valve structure, and it includes valve section of thick bamboo, case, with the extrusion spring of case looks butt and slide set up in adjust the pole in the valve section of thick bamboo, adjust the tip an organic whole of pole be provided with be used for with the tight spring holder of tip looks butt of extrusion spring, adjust the pole and keep away from the one end of spring holder is provided with the oil pressure piece, be provided with in the oil pressure piece oil inlet groove and with the oil feed pipe that the oil inlet groove is linked together, valve section of thick bamboo female connection has the holding ring, the holding ring be used for with the oil pressure piece is kept away from the one end looks butt of adjusting the pole, the oil feed pipe rotates to wear to locate the holding ring. This application has when improving regulation pole installation convenience, and the effect of adjusting the position of adjusting the pole is adjusted more easily.

Description

Control valve

Technical Field

The application relates to the technical field of valve structures, in particular to a control valve.

Background

The control valve is also called valve, and is a control component in fluid conveying system, and has the functions of diversion, interception and regulation. Among these, the spool of a control valve is an important component in controlling fluid flow. The valve core structure mainly comprises a valve core capable of moving linearly and an extrusion spring for extruding the valve core, taking the valve core structure of the one-way valve as an example, when liquid enters from the oil inlet, the extrusion spring contracts, the valve core moves, and when the oil inlet pressure is greater than a corresponding threshold value, the valve core moves to a position where the oil outlet is not blocked any more, so that the liquid can flow out from the oil outlet. When liquid flows in from the oil outlet, the liquid pressure of the oil inlet is almost zero, the extrusion spring is in an original length state, the valve core blocks the oil outlet, and then the liquid cannot flow from the oil outlet to the oil inlet, so that unidirectional flow control of the liquid is realized.

The liquid flows when and only until the liquid pressure value is greater than a control threshold set by some human regulation, otherwise the liquid flow is stopped. When the control threshold is adjusted, the elastic force of the spring is often adjusted by adjusting the tightness degree of the extrusion spring. At this moment, the valve core mechanism comprises a valve core, an extrusion spring, a spring seat and an adjusting rod, wherein the spring seat is abutted against one end, far away from the valve core, of the extrusion spring, the adjusting rod is usually connected in the valve body in a threaded mode, and one end of the adjusting rod pushes the spring seat to move by rotating the adjusting rod, so that the position of the extrusion spring is adjusted, and the adjustment of the control valve value is achieved.

With respect to the related art in the above, the inventors found the following drawbacks: first: in the process of rotating the adjusting rod, the spring seat is propped against the end part of the adjusting rod, so that the extrusion abrasion between the adjusting rod and the spring seat is serious in the process of rotating the adjusting rod relative to the spring seat; second,: in order to enable the spring seat and the adjusting rod to be better assembled, the spring seat is provided with a groove which is used for embedding the end part of the adjusting rod and is roughly conical in whole, but in the actual production process, the processing difficulty of the groove is high. Third,: the internal pressure of the hydraulic valve is larger, so that the process of rotating the adjusting rod is more laborious.

Disclosure of Invention

In order to solve the technical problem in the background art, the application provides a control valve.

The application provides a control valve adopts following technical scheme:

the utility model provides a control valve, includes valve section of thick bamboo, case, with the extrusion spring of case looks butt and slide set up in regulation pole in the valve section of thick bamboo, the tip an organic whole of adjusting the pole be provided with be used for with the tip looks tight spring holder of extrusion spring looks butt, the pole is kept away from the one end of spring holder is provided with the oil pressure piece, be provided with the oil groove in the oil pressure piece and with the oil pipe that the oil groove is linked together, valve section of thick bamboo female connection has the holding ring, the holding ring be used for with the oil pressure piece is kept away from the one end looks butt of adjusting the pole, the oil pipe rotation is worn to locate the holding ring.

Through adopting above-mentioned technical scheme, through with the integrative tip that sets up at the regulation pole of spring holder, improved the portability of regulation pole and spring holder installation, before adjusting the position of adjusting the pole simultaneously, apply the oil pressure to oil briquetting and regulation pole through the oil feed pipe to adjust the position of adjusting the pole, then rotate the holding ring, after the position adjustment of holding ring finishes, stop applying the oil pressure to the oil briquetting, at this moment under the effect of case end liquid pressure, adjust the pole reverse movement and with holding ring looks butt. The oil pressure block is arranged to push the adjusting rod, so that the rotation resistance of the positioning ring is reduced, and the position of the adjusting rod is adjusted more easily.

Optionally, the circumference outside of holding ring is provided with rotates the lug, be provided with on the tip lateral wall of valve section of thick bamboo with rotate a plurality of scale marks that the lug corresponds, a plurality of the scale mark is the ring shape and arranges.

Through adopting above-mentioned technical scheme, through the corresponding positional relationship of rotation lug and scale mark, can acquire the rotation angle information of holding ring to adjust the position of adjusting lever more accurately.

Optionally, the end side wall of the valve cylinder is vertically provided with an upright post, and the upright post is provided with a plurality of depth lines corresponding to the rotating convex blocks.

Through adopting above-mentioned technical scheme, through the corresponding positional relationship of rotation lug and degree of depth line, the rotation number of turns information of holding ring in the past combines the corresponding positional relationship of scale mark to obtain the rotation condition of holding ring more directly.

Optionally, an oil inlet hole communicated with the oil inlet groove is formed in the adjusting rod.

Through adopting above-mentioned technical scheme, fluid enters into the inlet port through the oil inlet groove, makes the oil pressure direct action in adjusting the pole to make the removal of adjusting the pole more stable.

Optionally, an abutment convex ring is arranged on the outer side wall of the adjusting rod, and the abutment convex ring is in abutment with the inner wall of the valve cylinder.

Through adopting above-mentioned technical scheme, through setting up the butt bulge loop, reduce the area of contact with between the valve section of thick bamboo inside wall, and then the removal of adjusting the pole is more smooth and easy.

Optionally, the butt bulge loop is provided with a plurality of, and two adjacent butt bulge loops form the lubricating chamber with between the inside wall of valve section of thick bamboo, set up on the regulation pole with the oil-out that the lubricating chamber is linked together.

Through adopting above-mentioned technical scheme, the fluid in the inlet port can enter into the moisturizing intracavity through the oil-out, and at the in-process that adjusts the pole and remove, some fluid stagnates in the inside wall of valve section of thick bamboo to as lubricating oil in order to reduce the frictional force that receives when adjusting the pole and remove.

Optionally, a plug hole is formed in a side wall of the valve cylinder, a blocking plate is arranged in the plug hole, and a part of the blocking plate penetrating through the plug hole is located between the abutting protrusion and the spring seat.

Through adopting above-mentioned technical scheme, at the in-process of adjusting the removal of pole towards extrusion spring, the barrier plate carries out spacingly to the travel distance of butt bulge loop to the maximum travel distance of adjusting the pole is restricted.

Optionally, the lateral wall of the valve cylinder begins to have a plug-in groove, the plug-in hole is communicated with the bottom of the plug-in groove, a mounting arc plate is arranged in the plug-in groove, and the blocking plate is arranged on the mounting arc plate.

Through adopting above-mentioned technical scheme, through setting up the installation arc board, the installation of convenient barrier plate is fixed.

Optionally, the spring seat is provided with a positioning column penetrating through the extrusion spring.

By adopting the technical scheme, the telescopic movement of the extrusion spring is more stable.

Optionally, a positioning groove for embedding the end part of the extrusion spring is formed in the spring seat.

By adopting the technical scheme, the connection between the extrusion spring and the spring seat is more stable.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the spring seat is integrally arranged on the adjusting rod, so that the portability of the installation of the adjusting rod and the spring seat is improved; the oil pressure block is arranged to push the adjusting rod, so that the rotation resistance of the positioning ring is reduced, and the position of the adjusting rod is adjusted more easily.

2. Through the corresponding position relation between the rotary lug and the depth line, the information of the number of rotation turns of the positioning ring can be obtained, and the corresponding position relation of the scale lines is combined, so that the rotation condition of the positioning ring can be obtained more directly.

3. The oil in the oil inlet hole can enter the oil wetting cavity through the oil outlet, and part of the oil is reserved on the inner side wall of the valve cylinder in the moving process of the adjusting rod, so that the oil is used as lubricating oil to reduce the friction force born by the moving of the adjusting rod.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a control valve in an embodiment of the present application.

Fig. 2 is a cross-sectional view of a control valve in an embodiment of the present application.

Fig. 3 is an exploded view of the adjusting rod and the positioning ring according to the embodiment of the present application.

Fig. 4 is a schematic end structure of a valve cartridge in an embodiment of the present application.

Fig. 5 is a cross-sectional view of a control valve in another embodiment.

Fig. 6 is an exploded view of a mounting arc plate and a valve cartridge in an embodiment of the present application.

Reference numerals illustrate: 1. a valve cylinder; 11. a slip hole; 12. a mounting hole; 14. a column; 15. a depth line; 16. an oil outlet pipe; 17. a plug hole; 18. a plug-in groove; 19. installing an arc plate; 191. a blocking plate; 2. a valve core; 21. penetrating a column; 22. a butt plug; 3. extruding a spring; 4. an adjusting rod; 41. an oil press block; 42. an oil inlet groove; 43. an oil inlet pipe; 44. an oil inlet hole; 45. abutting the convex ring; 46. an oil wetting cavity; 47. an oil outlet; 5. a spring seat; 51. positioning columns; 52. a positioning groove; 53. an abutting plate; 6. a second spring; 7. a flow conduit; 71. a flow port; 8. a positioning ring; 81. a screw cylinder portion; 82. a rotating part; 83. the lug 9 and the graduation marks are rotated.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6.

The embodiment of the application discloses a control valve. The control valve cartridge 2 of the present application is mounted in a control valve for regulating and controlling the flow of a liquid, which in the present embodiment is described by way of example as a pressure valve.

Referring to fig. 1 and 2, the control valve includes a valve cylinder 1, a valve body 2, a pressing spring 3, and an adjustment lever 4 slidably disposed in the valve cylinder 1. One end of the adjusting rod 4 is integrally connected with a spring seat 5. Both ends of the extrusion spring 3 are respectively abutted against the spring seat 5 and the valve core 2. The spring seat 5 is integrally provided with a positioning column 51 penetrating through the extrusion spring 3, and meanwhile, the valve core 2 is provided with a penetrating column 21 penetrating through the extrusion spring 3, so that the telescopic movement of the extrusion spring 3 is guided. The spring seat 5 is provided with a positioning groove 52 for embedding the end part of the compression spring 3. In this embodiment, a dual-spring buffer pressurization mode is adopted, that is, the second spring 6 is sleeved outside the compression spring 3, and the spring seat 5 has an abutting plate 53 abutting against the end of the second spring 6, so as to form a step on the spring seat 5, so that the second spring 6 and the compression spring 3 abut against different positions of the spring seat 5 respectively, and interference between the second spring 6 and the compression spring 3 does not occur.

Referring to fig. 2, a sliding hole 11 through which the adjusting lever 4 slides and a mounting hole 12 communicating with the sliding hole 11 are formed in the valve cylinder 1. The mounting hole 12 is internally penetrated with a flow pipeline 7, and the flow pipeline 7 is fixedly welded with the valve cylinder 1 or fixedly connected with the valve cylinder through flange bolts. The valve core 2 and part of the compression spring 3 are located in the flow duct 7. The side wall of the flow duct 7 is provided with a flow opening 71. The portion of the valve body 2 that abuts against the inner wall of the flow pipe 7 is an abutment plug 22.

Referring to fig. 2, when liquid enters from one end of the flow pipe 7 away from the pressing spring 3, a certain pressure is generated to the valve body 2, thereby contracting the pressing spring 3 and the second spring 6; when the liquid pressure reaches the pressure threshold, the abutting plug 22 of the valve core 2 moves to the side of the flow port 71 close to the adjusting rod 4 (in the figure, the abutting plug 22 moves to the right side of the flow port 71), and the liquid flows out through the flow port 71; when the liquid pressure value is smaller than the pressure threshold value, the liquid flow in the flow conduit 7 is stopped due to the blocking action of the abutment plug 22.

Referring to fig. 2 and 3, an oil pressure block 41 is integrally connected to one end of the adjusting rod 4 away from the spring seat 5, and an oil inlet groove 42 and an oil inlet pipe 43 communicating with the oil inlet groove 42 are provided in the oil pressure block 41. The valve cylinder 1 is internally connected with a locating ring 8 in a threaded manner, the locating ring 8 is used for being abutted against one end, away from the adjusting rod 4, of the oil pressing block 41, and the oil inlet pipe 43 is rotatably arranged in the locating ring 8 in a penetrating manner.

Referring to fig. 2, when the pressure threshold is adjusted, the position of the adjustment lever 4 and thus the position of the pressing spring 3 needs to be adjusted. In the embodiment, oil is injected into the oil inlet groove 42 through the oil inlet pipe 43, and the adjusting rod 4 is pushed to move towards the direction of the extrusion spring 3 through the oil pressure effect; at this point, the retainer ring 8 is rotated again to adjust the position of the retainer ring 8. When the position of the positioning ring 8 is adjusted, the oil pressure is stopped from being applied to the oil inlet pipe 43, and at this time, the adjusting rod 4 moves toward the positioning ring 8 and abuts against the positioning ring 8 under the action of the internal pressure of the flow pipe 7.

The mode of pushing in advance through the oil pressure and then rotating the positioning ring 8 is more labor-saving compared with the mode of pushing directly through the screw rod.

Referring to fig. 2 and 3, the retainer ring 8 includes a screw cylinder portion 81 that abuts against the oil pressure block 41 and is screwed to the inner wall of the valve cylinder 1, and a rotation portion 82 integrally connected to the screw cylinder portion 81. A plurality of rotation lugs 83 are integrally connected to the circumferential outer side wall of the rotation portion 82, and in this embodiment, three rotation lugs 83 are provided, and the three rotation lugs 83 are circumferentially uniformly spaced. A plurality of scale marks 9 are arranged on the side wall of the end part of the valve cylinder 1 or the positioning ring 8, and the scale marks 9 are annularly arranged. The rotation angle of the positioning ring 8 can be primarily known through the corresponding relation between the rotation convex blocks 83 and the positions of different scale marks 9. In this embodiment, the graduation marks 9 are circumferentially provided on the positioning ring 8 (at this time, when the positioning ring 8 is inserted, the initial insertion angle is controlled).

Referring to fig. 2 and 4, an upright post 14 is welded and fixed vertically on the side wall of the valve cylinder 1, a plurality of depth lines 15 are arranged on the upright post 14, and the rotation number information of the positioning ring 8 is obtained through the corresponding relation between the rotation protruding block 83 and the depth lines 15, so that the rotation angle condition of the positioning ring 8 can be further known. In this embodiment, a certain rotation bump 83 may be patterned or color-differentiated to serve as a reference rotation bump 83. Meanwhile, if the number of turns of the positioning ring 8 is a non-integer, three turns of zero 60 ° are taken as an example. When the locating ring 8 rotates for three circles, the worker can record the circles through the depth line 15, and the specific rotation angle is acquired and recorded through the scale line 9 along with the continuous rotation of the locating ring 8.

Referring to fig. 2, in the present embodiment, an oil inlet hole 44 communicating with the oil inlet groove 42 is formed in the adjusting rod 4, and at this time, the oil pressure does not act on the oil pressure block 41, but directly acts on the adjusting rod 4 through the oil inlet hole 44, so as to better push the movement of the adjusting rod 4. The outer side wall of the adjusting rod 4 is provided with an abutting convex ring 45, and the abutting convex ring 45 abuts against the inner cylinder wall of the valve cylinder 1, so that friction force between the adjusting rod 4 and the inner wall of the valve cylinder 1 is reduced in a mode of reducing contact area, and sliding movement of the adjusting rod 4 is smoother.

Referring to fig. 2, a plurality of abutting convex rings 45 are provided, an oil lubricating cavity 46 is formed between two adjacent abutting convex rings 45 and the inner side wall of the valve cylinder 1, and an oil outlet 47 communicated with the oil lubricating cavity 46 is formed on the side wall of the adjusting rod 4. The oil in the oil inlet hole 44 enters the oil lubricating cavity 46, and in the reciprocating movement process of the adjusting rod 4, the oil in the oil lubricating cavity 46 is partially adhered to the inner wall of the valve cylinder 1, so that the inner wall of the valve cylinder 1 is smoother, and the movement of the adjusting rod 4 is facilitated.

In another embodiment, instead of providing the oil-wetting chamber 46, the lubricant may be smeared on the inner wall of the valve cylinder 1 or on the outer side wall of the abutment collar 45 directly before the adjusting lever 4 is mounted.

Referring to fig. 5, in another embodiment, an oil outlet pipe 16 communicating with the oil wetting chamber 46 is connected to a side wall of the valve cylinder 1, and oil in the oil inlet hole 44 can flow out through the oil outlet pipe 16 to form a closed-loop oil path.

When the flowline 16 is not provided: when oil pressure is applied to the oil in the oil inlet pipe 43 through the oil pipe of the oil pressure device, the oil pipe is detached from the oil inlet pipe 43, and the oil inlet pipe 43 is sealed by a sealing member such as a sealing plug. Or the oil pipe of the oil pressure device is always connected to the oil feed pipe 43.

Referring to fig. 2 and 6, a plug hole 17 is formed in a side wall of the valve cylinder 1, a blocking plate 191 is fixedly inserted into the plug hole 17 in the valve cylinder 1, after the adjusting rod 4 is mounted, the blocking plate 191 is inserted into the plug hole 17, and the blocking plate 191 is inserted between the spring seat 5 and the abutting convex ring 45. When the adjustment lever 4 moves toward the pressing spring 3 by a certain distance, the blocking plate 191 abuts against the abutment convex ring 45, thereby restricting the moving distance of the adjustment lever 4.

Referring to fig. 2 and 6, further, a plugging groove 18 is formed on the outer side wall of the valve cylinder 1, and the plugging hole 17 is communicated with the bottom of the plugging groove 18. The insertion groove 18 is internally provided with a mounting arc plate 19, and the blocking plates 191 are integrally arranged on the mounting arc plate 19, and in this embodiment, three blocking plates 191 on the mounting arc plate 19 are preferably arranged. In this embodiment, two installation arc plates 19 are provided, the two installation arc plates 19 are oppositely supported on the circumferential outer side wall of the valve cylinder 1, and the installation arc plates 19 are fixed on the valve cylinder 1 in a screw connection mode.

The implementation principle of the control valve in the embodiment of the application is as follows: when the control valve adjusts the pressure threshold, oil is added into the oil inlet hole 44 through the oil inlet pipe 43, so that thrust is generated on the adjusting rod 4, the adjusting rod 4 moves towards the direction of the extrusion spring 3, and at the moment, the blocking plate 191 limits the maximum moving distance of the adjusting rod 4; then the positioning ring 8 is rotated again, the positioning ring 8 is rotated to a position corresponding to a preset pressure threshold value through the corresponding relation between the rotating lug 83 and the scale mark 9 as well as the depth line 15, then the oil pressure is stopped from being generated to the adjusting rod 4 through the oil inlet pipe 43, at the moment, under the action of the pressure in the fluid in the flow pipeline 7, the adjusting rod 4 moves reversely and is abutted against the positioning ring 8, and at the moment, the position of the adjusting rod 4 is the same as the corresponding position of the preset pressure threshold value.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The utility model provides a control valve, includes valve section of thick bamboo (1), case (2), with extrusion spring (3) and the setting that slides of case (2) butt in regulation pole (4) in valve section of thick bamboo (1), its characterized in that: the end of adjusting lever (4) is integrative be provided with be used for with the tip looks tight spring holder (5) of extrusion spring (3), adjust lever (4) and keep away from the one end of spring holder (5) is provided with oil pressure piece (41), be provided with oil feed groove (42) in oil pressure piece (41) and with oil feed pipe (43) that oil feed groove (42) are linked together, valve section of thick bamboo (1) female screw connection has holding ring (8), holding ring (8) be used for with oil pressure piece (41) are kept away from the one end looks butt of adjusting lever (4), oil feed pipe (43) rotate wear to locate holding ring (8).

2. The control valve of claim 1, wherein: the circumference outside of holding ring (8) is provided with rotates lug (83), be provided with on the tip lateral wall of valve section of thick bamboo (1) or on holding ring (8) with a plurality of scale mark (9) that rotate lug (83) corresponds, a plurality of scale mark (9) are the ring shape and arrange.

3. The control valve of claim 2, wherein: the side wall of the end part of the valve cylinder (1) is vertically provided with an upright post (14), and the upright post (14) is provided with a plurality of depth lines (15) corresponding to the rotating convex blocks (83).

4. The control valve of claim 1, wherein: an oil inlet (44) communicated with the oil inlet groove (42) is formed in the adjusting rod (4).

5. The control valve of claim 1, wherein: an abutting convex ring (45) is arranged on the outer side wall of the adjusting rod (4), and the abutting convex ring (45) abuts against the inner wall of the valve cylinder (1).

6. The control valve of claim 5, wherein: the oil-lubricating cavity (46) is formed between two adjacent abutting convex rings (45) and the inner side wall of the valve cylinder (1), and an oil outlet (47) communicated with the oil-lubricating cavity (46) is formed in the adjusting rod (4).

7. The control valve of claim 5, wherein: the side wall of the valve cylinder (1) is provided with a plug hole (17), a blocking plate (191) is arranged in the plug hole (17), and the part of the blocking plate (191) penetrating through the plug hole (17) is positioned between the abutting convex ring (45) and the spring seat (5).

8. The control valve of claim 7, wherein: the side wall of the valve cylinder (1) is provided with a plug-in groove (18), the plug-in hole (17) is communicated with the bottom of the plug-in groove (18), an installation arc plate (19) is arranged in the plug-in groove (18), and the blocking plate (191) is arranged on the installation arc plate (19).

9. The control valve of claim 1, wherein: the spring seat (5) is provided with a positioning column (51) penetrating through the extrusion spring (3).

10. The control valve of claim 1, wherein: the spring seat (5) is provided with a positioning groove (52) for embedding the end part of the extrusion spring (3).