CN218479992U

CN218479992U - Manual and explosion-proof electric proportional control load sensitive multi-way valve

Info

Publication number: CN218479992U
Application number: CN202223020916.2U
Authority: CN
Inventors: 彭宇
Original assignee: Ningbo Bolev Hydraulics Co ltd
Current assignee: Ningbo Bolev Hydraulics Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-02-14
Anticipated expiration: 2032-11-10

Abstract

The application relates to the field of hydraulic systems, in particular to a manual and explosion-proof electric proportional control load sensitive multi-way valve which comprises a valve body, a valve rod arranged in the valve body, a first elastic piece arranged on one side of the valve body, a manual hydraulic control end cover connected to the other side of the valve body, a coupler connected to the inside of the manual hydraulic control end cover in a sliding manner and abutted against the other end of the valve rod, and a manual hydraulic control assembly arranged in the manual hydraulic control end cover; the manual hydraulic control assembly comprises a lever connected to one end of the coupler, a rotating shaft penetrating through the manual hydraulic control end cover and a handle connected to one end of the rotating shaft, and one end of the lever is connected with the rotating shaft. The method has the effect of facilitating maintenance of the load-sensitive multi-way valve.

Description

Manual and explosion-proof electric proportional control load sensitive multi-way valve

Technical Field

The application relates to the field of hydraulic systems, in particular to a manual and explosion-proof electric proportional control load sensitive multi-way valve.

Background

The load sensitive multiway valve is a pressure compensation bypass overflow valve which transmits the load pressure of each working valve plate to an inlet valve block. The load-sensitive multi-way valve generally has good accurate control and micro-motion characteristics, so that the load-sensitive multi-way valve can meet the energy-saving requirement and the accurate and stable operation requirement of a hydraulic system, and therefore the load-sensitive multi-way valve is widely applied to heavy equipment such as engineering machinery, engineering vehicles and walking machinery.

The existing load-sensitive multi-way valve comprises a valve body, an oil inlet pipeline and an oil return pipeline which are communicated with the valve body, and a plurality of reversing valve rods which are arranged in the valve body in parallel and are regulated by electric control. The oil inlet pipeline supplies oil to the reversing valve rods and receives return oil of the reversing valve rods through the oil return pipeline.

In view of the above-mentioned related art, the inventor thinks that after impurities enter the valve body, the reversing valve rod is easily blocked, and the reversing valve rod cannot reciprocate only through electric control adjustment. The valve body needs to be detached, after impurities in the valve body are removed, the valve body and the reversing valve rod are assembled, the reversing valve rod can recover reciprocating motion, and then the load-sensitive multi-way valve recovers operation, so that the maintenance of the load-sensitive multi-way valve is inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to facilitate maintenance of the load-sensitive multi-way valve, the application provides a manual and explosion-proof electric proportional control load-sensitive multi-way valve.

The application provides a sensitive multiple unit valve of manual, explosion-proof electric proportional control load adopts following technical scheme:

a manual and explosion-proof electric proportional control load sensitive multi-way valve comprises a valve body, a valve rod arranged in the valve body, a first elastic piece arranged on one side of the valve body, a manual hydraulic control end cover connected to the other side of the valve body, a coupler connected in the manual hydraulic control end cover in a sliding manner and abutted against the other end of the valve rod, and a manual hydraulic control assembly arranged in the manual hydraulic control end cover; the manual hydraulic control assembly comprises a lever connected to one end of the coupler, a rotating shaft penetrating through the manual hydraulic control end cover and a handle connected to one end of the rotating shaft, and one end of the lever is connected with the rotating shaft.

Through adopting above-mentioned technical scheme, the sensitive multiple unit valve of conventional load adopts automatically controlled or hydraulic control more, when appearing impurity in the oil circuit, only can't make the valve rod carry out reciprocating motion through automatically controlled, need all pull down valve body and valve rod, assembles valve body and valve rod again after detaching impurity, just can resume the reciprocating motion of valve rod. Through setting up manual liquid accuse subassembly in one side of valve rod, when the valve rod can't carry out reciprocating motion under automatically controlled or the liquid accuse, can rotate the handle, drive the lever through the pivot and rotate to make the shaft coupling drive the valve rod and move.

Optionally, one end of the lever is provided with a guide block, one end of the guide block is provided with a guide ball, and one end of the coupler is provided with a through hole for the guide block and the guide ball rod to be inserted into.

Through adopting above-mentioned technical scheme, set up guide block and guide ball at the one end of lever, reduce the lever and use the pivot to the interference of shaft coupling when rotating as the axle for the drive shaft coupling that the lever can be stable slides.

Optionally, the other end of lever is provided with the locating piece, set up the confession in the pivot the shoulder hole that the locating piece was inserted and is established, the shoulder hole inner wall has the ladder face, the ladder face with a terminal surface looks butt of lever.

Through adopting above-mentioned technical scheme, through the setting of locating piece and shoulder hole for the pivot can only be upwards extracted to the lever, can't follow the slide-out of shoulder hole lower extreme, during the installation lever, directly with the lever lower extreme insert the shoulder hole can, thereby make the mounting structure of lever simple and convenient.

Optionally, the manual hydraulic control end cover is provided with a through hole for the rotating shaft to penetrate through, and a space for rotating the rotating shaft is formed in the through hole.

Through adopting above-mentioned technical scheme, set up the through-going hole through manual liquid accuse end cover for the pivot can be installed in manual liquid accuse end cover, compares in setting up the pivot outside manual liquid accuse end cover, installs the pivot more stable in manual liquid accuse end cover.

Optionally, the one end of pivot is provided with the connecting block, the connecting block is protruding to be located manual liquid accuse end cover, set up the confession on the connecting block the connecting hole that the handle wore to establish, the one end of handle is provided with the connecting piece, the connecting piece is worn to establish the connecting hole, the connecting piece is located one side of connecting block is provided with the locating part.

Through adopting above-mentioned technical scheme, through the grafting of connecting piece and connecting block for the installation of handle is more convenient, sets up the stopper in one section of connecting piece, makes the relation of connection of handle and pivot more stable.

Optionally, a mounting hole is formed in one side of the manual hydraulic control end cover, and a dust plug is embedded in the mounting hole.

Through adopting above-mentioned technical scheme, set up the mounting hole through one side at manual liquid accuse end cover for it is more convenient when installing pivot, lever and shaft coupling in manual liquid accuse end cover, establish in dust plug reduces impurity gets into manual liquid accuse end cover through inlaying.

Optionally, still include explosion-proof electricity proportional control valve, explosion-proof electricity proportional control valve install in the opposite side of valve body, explosion-proof electricity proportional control valve includes solenoid valve and is used for controlling the piston control assembly of business turn over oil mass, the solenoid valve set up in one side of piston control assembly.

Through adopting above-mentioned technical scheme, set up explosion-proof electric proportional control valve at the opposite side of valve body, through the business turn over oil mass in the explosion-proof electric proportional control valve developments regulation and control oil circuit to make the oil pressure in the valve body to regulate and control.

Optionally, the piston control assembly includes decompression valve body and decompression piston, the one end activity of decompression piston is worn to locate in the decompression valve body, another pot head of decompression piston is equipped with the second elastic component, the one end of second elastic component with one side looks butt of decompression valve body, the other end of second elastic component with one side looks butt of decompression piston.

Through adopting above-mentioned technical scheme, it is internal that the relief pressure valve is worn to locate by the relief pressure piston activity, and the relief pressure piston moves to the internal direction of relief pressure valve under the effect of solenoid valve, and the second elastic component is compressed this moment, and after the effect of solenoid valve disappeared, second elastic component reconversion for the direction motion outside the relief pressure valve body of relief pressure piston.

Optionally, a plurality of oil inlets and oil outlets are formed in the periphery of the pressure reduction valve body, and the pressure reduction piston is provided with a circulation hole.

Through adopting above-mentioned technical scheme, through the position of solenoid valve regulation and control decompression piston to adjust the crisscross area size of flow groove and inlet port and oil outlet, and then adjust the business turn over oil mass in the oil circuit, the size of the volume of business turn over oil is more simple and convenient through flow groove control.

Optionally, the other end of the pressure-reducing piston is provided with an insulating rubber cover.

By adopting the technical scheme, the pressure reducing piston and the electromagnet are electromagnetically insulated through the insulating rubber cover, so that the electromagnetic interference of the electromagnet on the pressure reducing piston is reduced.

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

1. the manual hydraulic control assembly is arranged on one side of the valve rod, so that when the valve rod cannot reciprocate under electric control or hydraulic control, the handle can be rotated, and the lever is driven to rotate through the rotating shaft, so that the shaft coupling drives the valve rod to move;

2. the other side of the valve body is provided with the explosion-proof electric proportional control valve, and the oil inlet and outlet quantity in the oil way is dynamically regulated and controlled through the explosion-proof electric proportional control valve, so that the oil pressure in the valve body can be regulated and controlled.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a schematic structural diagram of the valve stem and the manual hydraulic control assembly of the present embodiment.

Fig. 3 is an exploded view of the handle and the spindle of the present embodiment.

Fig. 4 is an exploded view of the spindle, lever and coupling of the present embodiment.

Fig. 5 is an exploded view of the manual pilot operated end cap of the present embodiment.

Fig. 6 is a schematic structural diagram of the explosion-proof electric proportional control valve of the present embodiment.

Fig. 7 isbase:Sub>A sectional view ofbase:Sub>A portionbase:Sub>A-base:Sub>A in fig. 6.

Description of reference numerals: 1. a valve body; 2. a manual hydraulic control end cover; 21. a sliding hole; 22. perforating holes; 23. caulking grooves; 24. mounting holes; 25. a dust plug; 26. a dust cover; 3. a manual hydraulic control assembly; 31. a handle; 32. a rotating shaft; 321. a stepped hole; 322. a step surface; 33. a lever; 34. a connecting member; 35. connecting blocks; 351. connecting holes; 36. a limiting member; 37. positioning blocks; 38. a guide block; 39. a guide ball; 4. an explosion-proof electric proportional control valve; 41. an electromagnetic valve; 42. a piston control assembly; 421. an insulating rubber cover; 422. a pressure reducing piston; 423. a pressure reducing valve body; 4231. mounting grooves; 424. a second elastic member; 425. an oil outlet hole; 426. an oil inlet hole; 427. a flow-through hole; 428. an oil storage tank; 429. a flow-through channel; 5. a valve stem; 6. a coupling; 61. a through hole; 7. a first elastic member.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a manual and explosion-proof electric proportional control load sensitive multi-way valve. Referring to fig. 1 and 2, the manual and explosion-proof electric proportional control load-sensitive multi-way valve comprises a valve body 1, a valve rod 5 arranged in the valve body 1, a manual hydraulic control end cover 2 connected to one side of the valve body 1, a coupler 6 arranged on the manual hydraulic control end cover 2 and having one end abutting against the valve rod 5, a manual hydraulic control assembly 3 arranged in the manual hydraulic control end cover 2 and connected to the coupler 6, and an explosion-proof electric proportional control valve 4 connected to the other side of the valve body 1. When impurities enter the valve body 1 to cause the reciprocating motion of the valve rod 5 to be interrupted, the manual control coupler 6 can be used for manually controlling the sliding through the manual hydraulic control assembly 3, so that the reciprocating motion of the valve rod 5 is recovered. The explosion-proof electric proportional control valve 4 is used for controlling the oil inlet and outlet quantity of an oil way in the valve body 1, so that the oil pressure in the valve body 1 is regulated and controlled.

Referring to fig. 2, one end of the coupling 6 is abutted against the valve rod 5, and the other end of the coupling 6 is provided with a manual hydraulic control assembly 3 for driving the coupling 6 to slide in the sliding hole 21. The manual hydraulic control assembly 3 includes a handle 31, a rotary shaft 32 connected to one end of the handle 31, and a lever 33 connected to the rotary shaft 32. One end of the valve rod 5, which is far away from the coupler 6, is provided with a first elastic part 7, one end of the first elastic part 7 is abutted against one end of the valve rod 5, and the other end of the first elastic part 7 is abutted against the inner wall of the valve body 1. In this embodiment, the first elastic member 7 is a compression spring. When the handle 31 is rotated to drive the coupling 6 to move towards the valve rod 5, under the action of the coupling 6, the valve rod 5 extrudes the first elastic piece 7, the first elastic piece 7 is compressed, after the handle 31 is loosened, the acting force of the coupling 6 on the valve rod 5 disappears, and the first elastic piece 7 rebounds, so that the valve rod 5 moves towards the coupling 6. Thereby effecting a reciprocating movement of the manually operated valve stem 5.

Referring to fig. 3, one end of the rotating shaft 32 is connected with a connecting block 35, the connecting block 35 is convexly arranged on one side of the manual hydraulic control end cover, and one end of the handle 31 is provided with a connecting piece 34. Specifically, the connection manner of the connecting member 34 and the handle 31 and the connection block 35 and the rotating shaft 32 may be welding or integral molding, and the integral molding manner is adopted in this embodiment. The connecting block 35 is provided with a connecting hole 351 for the connecting member 34 to penetrate through, specifically, the diameter of the connecting hole 351 is consistent with that of the connecting member 34, and the diameter of the connecting member 34 is smaller than that of the handle 31, so that one end of the handle 31 is abutted against one side of the connecting block 35. One pot head of connecting piece 34 is equipped with the stopper, and in this embodiment, stopper and connecting piece 34 pass through screw-thread fit.

Referring to fig. 3 and 4, a positioning block 37 is integrally formed at one end of the lever 33, and the diameter of the positioning block 37 is smaller than that of the lever 33. A stepped hole 321 for inserting the lever 33 and the positioning block 37 is formed in the rotating shaft 32, a stepped surface 322 is formed on an inner wall of the stepped hole 321, and the stepped surface 322 abuts against one end surface of the lever 33. The lever 33 is vertically restrained downward by the stepped surface 322 so that the lever 33 does not slide downward from the stepped hole 321.

The other end of the lever 33 is integrally formed with a guide block 38, and one end of the guide block 38 is integrally formed with a guide ball 39. The end of the coupling 6 away from the valve rod 5 is provided with a through hole 61 for inserting the guide block 38 and the guide ball 39. Specifically, the guide block 38 is a circular truncated cone with a diameter gradually decreasing from bottom to top, the outer peripheral surface of the guide block 38 forms a guide surface, when the rotating shaft 32 is manually driven to rotate by the handle 31, the rotating shaft 32 drives the lever 33 to rotate, and the lever 33 drives the coupler 6 to move back and forth in the horizontal direction. By the guide surface and the clearance in the through hole 61, the interference between the lever 33 and the coupling 6 is reduced.

Referring to fig. 5, one side of the manual hydraulic control end cover 2 is connected with one side of the valve body 1 through a bolt, a sliding hole 21 for sliding the coupler 6 is formed in one side of the manual hydraulic control end cover 2, and the coupler 6 is installed in the manual hydraulic control end cover 2 through the arrangement of the sliding hole 21. One side of the manual hydraulic control end cover 2, which is far away from the sliding hole 21, is provided with a through hole 22 for the rotating shaft 32 to penetrate through, and the directions of the through hole 22 and the sliding hole 21 are mutually perpendicular. Specifically, the diameter of the through hole 22 is slightly larger than the diameter of the rotating shaft 32, so that the rotating shaft 32 can rotate in the through hole 22. Both ends of pivot 32 are overlapped and are equipped with shield 26, and the displacement of manual hydraulically controlled end cover 2 is worn to establish the both sides of hole 22 and is provided with the caulking groove 23 that supplies shield 26 to inlay to establish. The manual hydraulic control end cover 2 is positioned above the through hole 22 and is provided with a mounting hole 24 convenient for mounting the rotating shaft 32 and the lever 33, and the dustproof plug 25 is embedded in the mounting hole 24.

Referring to fig. 6 and 7, the explosion-proof electro-proportional control valve 4 includes a solenoid valve 41 and a piston control assembly 42, and the solenoid valve 41 is disposed at one side of the piston control assembly 42. The piston control assembly 42 includes a pressure reducing valve body 423 and a pressure reducing piston 422, a flow passage 429 is formed in the pressure reducing valve body 423, and the pressure reducing piston 422 is slidably disposed in the pressure reducing valve body 423. The mounting groove 4231 has been seted up to the one end of decompression valve body 423, and the one end of decompression piston 422 is provided with insulating rubber lid 421, and the cover is equipped with second elastic component 424 on the decompression piston 422, and the one end of second elastic component 424 and one side looks butt of insulating rubber lid 421, the other end and the mounting groove 4231 diapire looks butt of second elastic component 424. In this embodiment, the second elastic member 424 is a conical compression spring.

Six oil outlet holes 425 and six oil inlet holes 426 are opened around the outer periphery of the relief valve body 423, the oil inlet holes 426 and the oil outlet holes 425 are opened and connected to the flow passage 429, and the oil inlet holes 426 are opened at one side of the oil outlet holes 425. The decompression piston 422 is provided with a flow hole 427 and an oil reservoir 428, and oil in the oil passage first enters the oil reservoir 428 through the oil inlet 426 and then flows out of the decompression valve body 423 through the flow hole 427 and the oil outlet 425. Under the action of the solenoid valve 41 and the elastic member, the decompression piston 422 is translated in the decompression valve body 423, and when the overlapping area of the flow hole 427 and the oil outlet hole 425 is gradually increased, the overlapping area of the flow hole 427 and the oil inlet hole 426 is gradually decreased, so that the oil outlet speed is increased, the oil pressure in the decompression valve body 423 is decreased, and the explosion-proof effect is achieved.

The implementation principle of the manual and explosion-proof electric proportional control load sensitive multi-way valve in the embodiment of the application is as follows: manual turning handle 31, drive pivot 32 and rotate, make lever 33 use pivot 32 to rotate as the centre of a circle, play certain effort to shaft coupling 6 through guide ball 39, make shaft coupling 6 slide to valve rod 5's direction, thereby make shaft coupling 6 drive valve rod 5 and slide, the first elastic component 7 of the valve rod 5 other end is compressed this moment, when removing the effort to handle 31, 6 effort to valve rod 5 of shaft coupling disappears, first elastic component 7 kick-backs, make valve rod 5 slide to shaft coupling 6's direction, thereby realized manual control valve rod 5 reciprocating motion.

In addition, the other end of valve body 1 is provided with explosion-proof electricity proportional control valve 4, controls the translation of decompression piston 422 in decompression valve body 423 through solenoid valve 41 and second elastic component 424, regulates and controls the business turn over oil mass in the decompression valve body 423 to the oil pressure in the regulation and control decompression valve body 423, and then play explosion-proof effect.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a manual, explosion-proof sensitive multiple unit valve of electric proportional control load which characterized in that: the hydraulic control valve comprises a valve body (1), a valve rod (5) arranged in the valve body (1), a first elastic part (7) arranged on one side of the valve body (1), a manual hydraulic control end cover (2) connected to the other side of the valve body (1), a coupler (6) which is connected in the manual hydraulic control end cover (2) in a sliding mode and is abutted against the other end of the valve rod (5), and a manual hydraulic control assembly (3) arranged in the manual hydraulic control end cover (2); manual hydraulic control subassembly (3) including connect in lever (33), the wearing to locate of shaft coupling (6) one end pivot (32) of manual hydraulic control end cover (2) and connect in handle (31) of pivot (32) one end, the one end of lever (33) with pivot (32) link to each other.

2. The manual, explosion-proof electrically proportional controlled load sensitive multi-way valve of claim 1, wherein: one end of the lever (33) is provided with a guide block (38), one end of the guide block (38) is provided with a guide ball (39), and one end of the coupler (6) is provided with a through hole (61) for the guide block (38) and the guide ball (39) to be inserted.

3. The manual, explosion-proof electrically proportional controlled load sensitive multiplex valve of claim 1, wherein: the other end of lever (33) is provided with locating piece (37), the confession has been seted up on pivot (32) locating piece (37) insert ladder hole (321) of establishing, ladder hole (321) inner wall has ladder face (322), ladder face (322) with a terminal surface looks butt of lever (33).

4. The manual, explosion-proof electrically proportional controlled load sensitive multiplex valve of claim 1, wherein: the confession has been seted up in manual hydraulically controlled end cover (2) wear to establish through hole (22) that pivot (32) worn to establish, have in through hole (22) pivot (32) pivoted space.

5. The manual, explosion-proof electrically proportional controlled load sensitive multiplex valve of claim 1, wherein: the one end of pivot (32) is provided with connecting block (35), protruding locating of connecting block (35) manual liquid accuse end cover (2), offer the confession on connecting block (35) connecting hole (351) that handle (31) wore to establish, the one end of handle (31) is provided with connecting piece (34), connecting piece (34) are worn to establish connecting hole (351), connecting piece (34) are located one side of connecting block (35) is provided with locating part (36).

6. The manual, explosion-proof electrically proportional controlled load sensitive multiplex valve of claim 1, wherein: one side of the manual hydraulic control end cover (2) is provided with a mounting hole (24), and a dustproof plug (25) is embedded in the mounting hole (24).

7. The manual, explosion-proof electrically proportional controlled load sensitive multiplex valve of claim 1, wherein: still include explosion-proof electricity proportional control valve (4), explosion-proof electricity proportional control valve (4) install in the opposite side of valve body (1), explosion-proof electricity proportional control valve (4) include solenoid valve (41) and be used for controlling piston control assembly (42) of business turn over oil mass, solenoid valve (41) set up in one side of piston control assembly (42).

8. The manual, explosion-proof electrically proportional controlled load sensitive multiplex valve of claim 7, wherein: piston control assembly (42) are including decompression valve body (423) and decompression piston (422), the one end activity of decompression piston (422) is worn to locate in decompression valve body (423), another pot head of decompression piston (422) is equipped with second elastic component (424), the one end of second elastic component (424) with one side looks butt of decompression valve body (423), the other end of second elastic component (424) with one side looks butt of decompression piston (422).

9. The manual, explosion-proof electrically proportional controlled load sensitive multiplex valve of claim 8, wherein: the periphery of the pressure reducing valve body (423) is provided with a plurality of oil inlet holes (426) and oil outlet holes (425), and the pressure reducing piston (422) is provided with a circulation hole (427).

10. The manual, explosion-proof electrically proportional controlled load sensitive multiplex valve of claim 8, wherein: and the other end of the decompression piston (422) is provided with an insulating rubber cover (421).