CN215172673U

CN215172673U - Direct-drive proportional servo valve

Info

Publication number: CN215172673U
Application number: CN202120563514.3U
Authority: CN
Inventors: 程陆; 巩少君; 郑风云
Original assignee: Shanghai Kaituo Mechanical And Electrical Equipment Co ltd
Current assignee: Shanghai Kaituo Mechanical And Electrical Equipment Co ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2021-12-14
Anticipated expiration: 2031-03-18

Abstract

The utility model discloses a direct-drive proportional servo valve, in particular to the technical field of proportional servo valves, which comprises a base and a top seat, wherein after a connecting piece is detached from a bolt between a protective shell and a valve body, the valve body and the connecting piece are directly pulled open, the left end and the right end of the inner side of a clamping block are both inclined planes, so when the valve body and the connecting piece are pulled, a clamping block can be pushed away from a clamping groove, a second push rod is separated from a sliding block, and the first push rod and the sliding block can be separated equally, so that the protective shell, the valve body and the connecting piece can be easily detached, and further the fine repair is convenient, after the repair is finished, the first push rod and the second push rod are simultaneously inserted into the connecting piece, so that the first push rod and the second push rod extrude the clamping block, the clamping block overcomes the elasticity of a secondary spring and moves towards an inner groove, when the clamping groove moves to the inner side of the clamping block, the clamping block is clamped into the clamping groove again by the elasticity of the secondary spring, the bolts are then retightened, completing the assembly of the proportional servo valve.

Description

Direct-drive proportional servo valve

Technical Field

The utility model relates to a proportional servo valve technical field especially relates to a direct-drive proportional servo valve.

Background

The proportional valve is a new type of hydraulic control device, and on the general pressure valve, flow valve and direction valve, the proportional electromagnet is used to replace the original control portion, and according to the input electric signal the pressure, flow or direction of oil flow can be continuously and proportionally controlled remotely. Proportional valves generally have pressure compensation capabilities and output pressure and flow may be unaffected by load changes.

The valve core and the push rod in the proportional servo valve on the current market are generally of an integrated structure, so that the proportional servo valve is quite inconvenient to disassemble and maintain.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the utility model is to provide a direct-drive proportional servo valve to solve the problem that proposes in the above-mentioned background art.

The utility model provides a technical scheme that its technical problem adopted is: a direct-drive proportional servo valve comprises a protective shell and a valve body, wherein the protective shell is positioned on the left side of the valve body, a connecting piece is fixedly connected between the protective shell and the valve body through bolts, a controller is arranged at the upper end inside the protective shell, a displacement sensor is arranged at the left lower end inside the protective shell, a torque motor is arranged at the lower end inside the protective shell and positioned on the right side of the displacement sensor, a first push rod is arranged at the lower end of the torque motor, the left side of the first push rod penetrates leftwards and is fixedly connected with a sensing end of the displacement sensor, the right side of the first push rod penetrates rightwards and extends into the connecting piece, a valve core is arranged inside the valve body, a second push rod is fixedly connected to the left side of the valve core, the left side of the second push rod penetrates leftwards and extends into the connecting piece, annular clamping grooves are formed in the outer ends of the right side of the first push rod and the left side of the second push rod, and a sliding block is connected inside the connecting piece in a sliding manner, the slider is inside to link up about just push rod one right side and two left sides of push rod all insert wherein, four inside grooves have all evenly been seted up to the slider inner wall left and right sides, the inside equal sliding connection of inside groove has the fixture block, inside the fixture block inboard all extends to the draw-in groove, just fixture block and draw-in groove joint.

Specifically, the interface is installed to protective housing right side upper end, interface and controller electric connection, the controller is signal connection with displacement sensor and torque motor.

Specifically, a rack is arranged on the outer wall of the push rod and located at the lower end of the torque motor, a gear is fixedly connected to the power output end of the torque motor, and the gear is meshed with the rack.

Specifically, six gag lever posts of even fixedly connected with between the connecting piece inner wall left and right sides, the gag lever post all runs through slider and rather than sliding connection.

The connecting piece is internally provided with main springs which are embedded into the left side and the right side of the sliding block, the main springs are located at the inner ends of the limiting rods, and the inner side and the outer side of each main spring are respectively contacted with the outer wall of the sliding block and the inner wall of the connecting piece.

Specifically, a secondary spring is embedded in the inner groove, and the inner side and the outer side of the secondary spring are respectively contacted with the fixture block and the bottom of the inner groove.

Specifically, both ends are the inclined plane about the fixture block inboard.

Compared with the prior art, the utility model discloses the beneficial effect who realizes: the direct-drive proportional servo valve directly pulls open the valve body and the connecting piece after the connecting piece and the bolt between the protective shell and the valve body are detached, because the left end and the right end of the inner side of the clamping block are inclined planes, the clamping block can be pushed away from the clamping groove when the valve body and the connecting piece are pulled, thereby separating the second push rod from the slide block and similarly separating the first push rod from the slide block, so as to easily separate the protective shell, the valve body and the connecting piece, thereby facilitating the micro repair, and after the repair is finished, by inserting the first push rod and the second push rod into the connecting piece at the same time, so that the first push rod and the second push rod extrude the clamping block, the clamping block overcomes the elasticity of the secondary spring and moves towards the inner groove, when the clamping groove moves to the inner side of the clamping block, the clamping block is clamped into the clamping groove again under the elastic force of the secondary spring, and then the bolt is screwed again, so that the proportional servo valve is assembled.

Drawings

FIG. 1 is an overall front sectional view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1 according to the present invention;

fig. 3 is the slide block sectioning schematic diagram of the utility model.

In the figure: the valve comprises a protective shell-1, a valve body-2, a connecting piece-3, a controller-4, a displacement sensor-5, a torque motor-6, a connector-7, a push rod I-8, a rack-9, a push rod II-10, a valve core-11, a slide block-12, a limiting rod-13, a main spring-14, a clamping block-15, an inner groove-16, a secondary spring-17 and a clamping groove-18.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a direct-drive proportional servo valve comprises a protective shell 1 and a valve body 2, wherein the protective shell 1 is positioned on the left side of the valve body 2, a connecting piece 3 is fixedly connected between the protective shell 1 and the valve body 2 through a bolt, a controller 4 is arranged at the upper end inside the protective shell 1, a displacement sensor 5 is arranged at the left lower end inside the protective shell 1, a torque motor 6 is arranged at the lower end inside the protective shell 1 and on the right side of the displacement sensor 5, a first push rod 8 is arranged at the lower end of the torque motor 6, the left side of the first push rod 8 penetrates leftwards and is fixedly connected with a sensing end of the displacement sensor 5, the right side of the first push rod 8 penetrates rightwards and extends into the connecting piece 3, a valve core 11 is arranged inside the valve body 2, a second push rod 10 is fixedly connected to the left side of the valve core 11, the left side of the second push rod 10 penetrates leftwards and extends into the connecting piece 3, annular clamping grooves 18 are formed in the outer ends of the left side of the first push rod 8 and the second push rod 10, a slide block 12 is connected inside the connecting piece 3 in a sliding manner, the slide block 12 is communicated from left to right and the right side of a first push rod 8 and the left side of a second push rod 10 are inserted into the slide block 12, four inner grooves 16 are uniformly arranged on the left and right sides of the inner wall of the slide block 12, clamping blocks 15 are connected inside the inner grooves 16 in a sliding manner, the inner sides of the clamping blocks 15 extend into clamping grooves 18, the clamping blocks 15 are clamped with the clamping grooves 18, a connector 7 is arranged at the upper end of the right side of the protective shell 1, the connector 7 is electrically connected with a controller 4, the controller 4 is in signal connection with the displacement sensor 5 and the torque motor 6, a rack 9 is arranged on the outer wall of the first push rod 8 and at the lower end of the torque motor 6, a gear is fixedly connected with the power output end of the torque motor 6, the gear is meshed with the rack 9, six limiting rods 13 are uniformly and fixedly connected between the left and right sides of the inner wall of the connecting piece 3, the limiting rods 13 penetrate through the slide block 12 and are in a sliding manner, main springs 14 are embedded inside the connecting piece 3 and at the left and right sides of the slide block 12, the main springs 14 are positioned at the inner ends of the six limiting rods 13, the inner side and the outer side of each main spring 14 are respectively contacted with the outer wall of the sliding block 12 and the inner wall of the connecting piece 3, the secondary springs 17 are embedded in the inner grooves 16, the inner side and the outer side of each secondary spring 17 are respectively contacted with the clamping blocks 15 and the bottoms of the inner grooves 16, and the left end and the right end of the inner side of each clamping block 15 are inclined planes;

the proportional servo valve is connected with an external power supply through a connector 7, so that a controller 4 is started, then a torque motor 6 is controlled through the controller 4, the power output end of the torque motor 6 rotates, and a first push rod 8 moves left and right through the meshing of a gear and a rack 9, and the first push rod 8 and a second push rod 10 are fixed with a sliding block 12 through a clamping groove 18 and a clamping block 15, so that the sliding block 12 and the second push rod 10 move along with the first push rod 8 while the first push rod 8 moves left and right, and the second push rod 10 drives a valve core 11 to move, so that the flow of liquid in a valve body 2 can be controlled;

when the push rod I8 moves left and right, the displacement sensor 5 fixed with the push rod I8 can monitor the displacement of the push rod I8 in real time and synchronously transmit displacement signals to the controller 4, so that the controller 4 controls the torque motor 6 to rotate by using the received signals, the left and right movement of the valve core 11 can be accurately controlled, the liquid output flow of the proportional servo valve can be accurately controlled, and the main springs 14 on the left and right of the slide block 12 can provide corresponding buffer force when the slide block 12 moves left and right;

in addition, when the proportional servo valve is disassembled and maintained, after the bolt between the connecting piece 3 and the protective shell 1 and the valve body 2 is disassembled, the valve body 2 and the connecting piece 3 are directly pulled open, because the left end and the right end of the inner side of the clamping block 15 are inclined planes, when the valve body 2 and the connecting piece 3 are pulled, the inner end of the push rod II 10 extrudes the inclined plane of the clamping block 15, the clamping block 15 can be pushed away from the clamping groove 18, so that the push rod II 10 is separated from the sliding block 12, and the push rod I8 and the sliding block 12 can be separated in the same way, so that the protective shell 1, the valve body 2 and the connecting piece 3 are easily disassembled, further the micro-maintenance is convenient, after the maintenance is completed, the push rod I8 and the push rod II 10 are simultaneously inserted into the connecting piece 3, so that the push rod I8 and the push rod II 10 extrude the clamping block 15 to move towards the inner groove 16 by overcoming the elasticity of the secondary spring 17, when the clamping groove 18 moves to the inner side of the clamping block 15, the latch 15 is re-latched into the latch groove 18 by the elastic force of the secondary spring 17, and then the bolt is re-tightened, so that the assembly of the proportional servo valve is completed.

It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a direct-drive proportional servo valve, includes protective housing (1) and valve body (2), its characterized in that: the protective shell (1) is positioned on the left side of the valve body (2), a connecting piece (3) is fixedly connected between the protective shell (1) and the valve body (2) through a bolt, a controller (4) is arranged at the upper end inside the protective shell (1), a displacement sensor (5) is installed at the left lower end inside the protective shell (1), a torque motor (6) is installed at the lower end inside the protective shell (1) and positioned on the right side of the displacement sensor (5), a first push rod (8) is arranged at the lower end of the torque motor (6), the left side of the first push rod (8) penetrates leftwards and is fixedly connected with the sensing end of the displacement sensor (5), the right side of the first push rod (8) penetrates rightwards and extends into the connecting piece (3), a valve core (11) is arranged inside the valve body (2), a second push rod (10) is fixedly connected to the left side of the valve core (11), and the left side of the second push rod (10) penetrates leftwards and extends into the connecting piece (3), push rod (8) right side with push rod two (10) left side outer end has all been seted up and has been annular draw-in groove (18), connecting piece (3) inside sliding connection has slider (12), link up just about slider (12) is inside push rod (8) right side and push rod two (10) left side all insert wherein, four inside grooves (16) have all evenly been seted up to the slider (12) inner wall left and right sides, inside equal sliding connection has fixture block (15) in inside groove (16), fixture block (15) inboard all extends to inside draw-in groove (18), just fixture block (15) and draw-in groove (18) joint.

2. A direct drive proportional servo valve as claimed in claim 1, wherein: interface (7) are installed to protective housing (1) right side upper end, interface (7) and controller (4) electric connection, controller (4) are signal connection with displacement sensor (5) and torque motor (6).

3. A direct drive proportional servo valve as claimed in claim 1, wherein: the outer wall of the first push rod (8) is provided with a rack (9) at the lower end of the torque motor (6), the power output end of the torque motor (6) is fixedly connected with a gear, and the gear is meshed with the rack (9).

4. A direct drive proportional servo valve as claimed in claim 1, wherein: six gag lever posts (13) of even fixedly connected with between the connecting piece (3) inner wall left and right sides, gag lever post (13) all run through slider (12) and rather than sliding connection.

5. A direct drive proportional servo valve as claimed in claim 4, wherein: connecting piece (3) inside just be located slider (12) left and right sides and all have embedded main spring (14), main spring (14) all are located six gag lever post (13) inner, the inside and outside both sides of main spring (14) contact with slider (12) outer wall and connecting piece (3) inner wall respectively.

6. A direct drive proportional servo valve as claimed in claim 1, wherein: a secondary spring (17) is embedded in the inner groove (16), and the inner side and the outer side of the secondary spring (17) are respectively contacted with the clamping block (15) and the bottom of the inner groove (16).

7. A direct drive proportional servo valve as claimed in claim 1, wherein: the left end and the right end of the inner side of the clamping block (15) are both inclined planes.