CN109296816B

CN109296816B - Mechanical switching dispensing device

Info

Publication number: CN109296816B
Application number: CN201811449169.XA
Authority: CN
Inventors: 张英英; 林忠灿; 陈云峰; 崔金锋; 颜亚萍; 郭海辉
Original assignee: Shaanxi Space Pump & Valve Science And Technology Co ltd
Current assignee: Shaanxi Space Pump & Valve Science And Technology Co ltd
Priority date: 2018-11-28
Filing date: 2018-11-28
Publication date: 2023-12-01
Anticipated expiration: 2038-11-28
Also published as: CN109296816A

Abstract

The application provides a mechanically switched dispensing device comprising: the one-inlet-multiple-outlet reversing valve is provided with an injection port and a plurality of output ports; a switching assembly for mechanically switching one of the plurality of output ports in communication with the injection port; the control valve is connected with the medium inlet through a pipeline so as to receive the medium input from the outside; the hydraulic driving assembly is respectively connected with the through hole of the control valve and the injection hole of the one-inlet-multiple-outlet reversing valve through pipelines; the jump component is connected with the control valve through the jump component, so that the hydraulic driving component drives the control valve to switch stations through the control jump component, and the hydraulic driving component guides media passing through the control valve into the one-inlet-multiple-outlet reversing valve.

Description

Mechanical switching dispensing device

Technical Field

The application relates to the technical field of natural gas transportation, in particular to a mechanical switching dispensing device.

Background

Along with the development of economy, the national demand for energy is increasing, and the natural gas used as clean energy is rapid in development speed. In the natural gas exploitation process, when the air temperature is low, the natural gas pipeline is easy to generate ice blockage phenomenon, and at the moment, a methanol solution is required to be injected into a tank body or the pipeline, so that ice blockage is avoided. In addition, the injection of the foam discharging agent can effectively prevent harmful bubbles from being generated, and ensure the normal operation of the whole station area.

However, in such an environment, the electric power source is very deficient, and the electric-control dispensing device is very easy to work normally due to insufficient power supply. There is a need to develop a device that can achieve injection without requiring electrical energy, i.e., a mechanically switched dispensing device.

Disclosure of Invention

In view of the above, the embodiments of the present application provide a mechanically switching dispensing device to solve the technical defects existing in the prior art.

A mechanically switched dispensing device, comprising:

the one-inlet-multiple-outlet reversing valve is provided with an injection port and a plurality of output ports;

a switching assembly for mechanically switching one of the plurality of output ports in communication with the injection port;

the control valve is connected with the medium inlet through a pipeline so as to receive the medium input from the outside;

the hydraulic driving assembly is respectively connected with the through hole of the control valve and the injection hole of the one-inlet-multiple-outlet reversing valve through pipelines;

the hydraulic driving assembly is connected with the control valve through the jump assembly, so that the hydraulic driving assembly drives the control valve to switch stations through the control jump assembly, and the hydraulic driving assembly guides media passing through the control valve into the one-inlet-multiple-outlet reversing valve;

And in the process that the hydraulic driving assembly controls the control valve to guide the medium into the one-inlet-one-outlet reversing valve, the hydraulic driving assembly drives the switching assembly to switch one of the plurality of output ports to be communicated with the injection port, and the one-inlet-one-outlet reversing valve outputs the medium through the output port communicated with the input port.

Optionally, the hydraulic driving assembly comprises a positive-displacement reversing driving cylinder, a piston main body positioned in the positive-displacement reversing driving cylinder, a piston rod fixedly connected with the piston main body and positioned at one side of the piston main body facing the switching assembly, and a driving unit connected with the piston rod and used for driving the piston rod to move towards the switching assembly;

the piston main body divides a cavity in the positive-displacement reversing driving cylinder into a first variable cavity and a second variable cavity, the first variable cavity and the second variable cavity are connected with the control valve through pipelines, the first variable cavity is positioned at one side of the piston main body facing the switching assembly, and the second variable cavity is positioned at one side of the piston main body facing away from the switching assembly;

in the case of a spool of a control valve being located at a first station, the medium enters a first variable cavity via the control valve; the piston main body drives the piston rod to move towards the direction of the second variable cavity under the pressure of the medium in the first variable cavity; the medium in the second variable cavity flows into the one-inlet-multiple-outlet reversing valve, and under the condition that the piston rod moves to the first jump position, the jump component is driven to enable the valve core to be switched to the second station;

Under the condition that a valve core of the control valve is positioned at a second station, the piston main body moves towards a first variable cavity under the action of the driving unit, a medium in the first variable cavity enters the second variable cavity through the control valve, and under the condition that a piston rod moves to a second jump position, the jump component is driven to enable the valve core to be switched to the first station;

in the process that the piston main body moves towards the direction of the first variable cavity, one end of the piston main body, which drives the piston rod, drives the switching component to switch one of the plurality of output ports to be communicated with the injection port.

Optionally, the control valve comprises a first port, and an inlet and a second port respectively positioned at two sides of the first port; the first port is communicated with the first variable cavity through a pipeline; the second port is communicated with the second variable cavity through a pipeline; one end of the positive-displacement reversing driving cylinder, which is far away from the switching assembly, is provided with a conveying port communicated with the second variable cavity, and the conveying port is communicated with an injection port of the one-inlet multi-outlet reversing valve through a pipeline;

under the condition that a valve core of the control valve is positioned at a first station, the inlet is communicated with the first port, and the second port is in a closed state; an external medium enters the first variable cavity through the inlet and the first port; the piston main body drives the piston rod to move towards the direction of the second variable cavity under the pressure of the medium in the first variable cavity; medium in the second variable cavity enters the one-inlet-multiple-outlet reversing valve through the conveying port and the injection port;

Under the condition that a valve core of the control valve is positioned at the second station, the first port is communicated with the second port, and the inlet is in a closed state; the piston body moves towards the direction of the first variable cavity under the action of the driving unit and the piston rod, and medium in the first variable cavity enters the second variable cavity through the first port and the second port.

Optionally, the positive-displacement reversing driving cylinder comprises a cylinder body and a cylinder cover, wherein the cylinder cover is positioned at one end of the cylinder body away from the switching assembly and is used for sealing an opening of the cylinder body; the cylinder body is detachably connected with the cylinder cover.

Optionally, a bulge is arranged on the circumference side of one end of the cylinder body, facing the cylinder cover, and the driving unit comprises a spring seat positioned at one end of the cylinder body, facing the switching assembly, and a telescopic spring positioned between the spring seat and the bulge and sleeved on the circumference side of the cylinder body;

the piston rod penetrates through the center of the spring seat and is fixedly connected with the spring seat;

under the condition that the piston main body is under the pressure of a medium in the first variable cavity, the piston main body drives the piston rod and the spring seat to move towards the direction of the second variable cavity, and the telescopic spring is compressed and deformed;

and under the condition that the valve core of the control valve is switched to the second station, the telescopic spring is reset and drives the piston rod to move towards the direction of the switching assembly.

Optionally, one end of all the pipelines communicated with the positive-displacement reversing driving cylinder passes through the cylinder cover to be communicated with the cavity of the positive-displacement reversing driving cylinder; a through hole is formed in the side wall of the cylinder body, one end of the through hole is communicated with the end face, facing the cylinder cover, of the cylinder body, the other end of the through hole is communicated with the inner wall, far away from the cylinder cover, of the cylinder body, and the through hole is communicated with the first through hole through a pipeline;

in a state that the medium enters the first variable cavity through the first through hole, the medium bypasses the second variable cavity through the through hole and enters the first variable cavity.

Optionally, the one-in-multiple-out reversing valve further comprises a reversing valve body and a plurality of valve rods; the switching component comprises a rotary table rotationally connected with the one-in and one-out reversing valve, a reversing sheet connected with the rotary table and a top block fixedly arranged on one end face of the rotary table;

in the case of driving the turntable to rotate by the commutator segments,

the ejector block rotates to be in contact with one valve rod in the plurality of valve rods; the valve rod which is abutted against the jacking block is jacked up vertically, and an output port controlled by the valve rod which is abutted against the jacking block is communicated with the injection port;

the rest valve rods which are not in conflict with the top block are in conflict with the end face of the rotary table, so that the output ports controlled by the rest valve rods which are not in conflict with the top block are separated from the injection port.

Optionally, the valve core extends out of the housing of the control valve;

the jump component comprises a first connecting piece, a second connecting piece and a third connecting piece; the first connecting piece is sequentially provided with a first positioning part, a second positioning part and a third positioning part along the length direction of the first connecting piece; the second positioning part is positioned between the first positioning part and the third positioning part; the first connecting piece slides and is hinged with one end of the valve core extending out of the shell through the first positioning part; one end of the second connecting piece is hinged with the first connecting piece through a third positioning part; one end of the third connecting piece is hinged with the first connecting piece through the second positioning part; the other end of the second connecting piece slides and is hinged with the middle position of the third connecting piece;

in the process that the valve core moves from the first station to the second station, the third connecting piece drives the second connecting piece and the first connecting piece to switch from the first position to the second position together, and the first connecting piece instantly drives the valve core to move from the first station to the second station;

in the process that the valve core moves from the second station to the first station, the third connecting piece drives the second connecting piece and the first connecting piece to be switched from the second position to the first position together, and the first connecting piece instantly drives the valve core to move from the second station to the first station.

Optionally, a moving assembly is arranged at one end of the second connecting piece, which is connected with the third connecting piece, and the moving assembly comprises a compression spring and a moving block positioned at one end of the compression spring, which faces the second connecting piece; the moving block is in abutting connection with one end of the compression spring, which faces the second connecting piece; the second connecting piece is hinged with the moving block.

Optionally, the method further comprises: and the bracket is used for supporting the one-inlet-multiple-outlet reversing valve, the control valve and the hydraulic driving assembly.

According to the mechanical switching dispensing device provided by the application, the medium is conveyed into the one-in-one-out reversing valve by changing the conveying route of the medium, so that the hopping assembly and the switching assembly are driven to operate by the control valve and the hydraulic driving assembly, and the medium is conveyed through the one-in-one-out reversing valve by the filling opening and the output opening of the one-in-one reversing valve, so that the mechanical switching dispensing device can be widely applied to areas with deficient electric power resources.

Drawings

FIG. 1 is a cross-sectional view of a dispensing device for mechanically switching between the two, according to one embodiment of the present application;

FIG. 2 is a cross-sectional view of a one-in-multiple-out reversing valve and a switching assembly according to an embodiment of the present application in an assembled state;

FIG. 3 is a schematic diagram of an overall structure of a switching assembly and a one-in-multiple-out reversing valve according to an embodiment of the present application in an assembled state;

fig. 4 is a schematic diagram of a mechanically switched dispensing device according to an embodiment of the present application for expressing a positional relationship between a commutator segment and a piston rod;

fig. 5 is a schematic diagram of a mechanically switched dispensing device according to an embodiment of the present application for expressing a positional relationship between a commutator segment and a piston rod;

FIG. 6 is a schematic diagram of a mechanically switched dispensing device for illustrating an internal structure of a hopping assembly according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a mechanically switched dispensing device for illustrating an internal structure of a hopping assembly according to an embodiment of the present application;

fig. 8 is an isometric view of a hopping assembly provided by an embodiment of the present application.

Reference numerals

1. One-inlet-multiple-outlet reversing valve; 11. a reversing valve body; 111. a valve cover; 112. a main valve body; 113. a valve seat; 114. an O-ring; 115. a support pad; 116. an antifriction sleeve; 117. a support sleeve; 12. an injection port; 13. an output port; 14. a valve stem; 15. a bearing sleeve; 2. a switching assembly; 21. a turntable; 211. a receiving groove; 22. a support rod; 23. a rotating shaft; 24. a reversing sheet; 25. a torsion spring; 3. a pressing assembly; 31. a spring support; 32. a return spring; 4. a control valve; 41. a housing; 411. a second positioning rod; 412. a limiting plate; 4121. a thrust port; 413. a first port; 414. an access port; 415. a second port; 42. a valve core; 5. a hydraulic drive assembly; 51. a positive displacement reversing driving cylinder; 511. a cylinder; 5111. a via hole; 512. a cylinder cover; 5121. a delivery port; 513. a first variable cavity; 514. a second variable cavity; 515. a piston body; 516. a piston rod; 517. a guide slide bar; 52. a driving unit; 521. a spring seat; 522. a telescopic spring; 6. a jump component; 61. a first connector; 611. a first positioning portion; 612. a second positioning portion; 613. a third positioning portion; 614. a first positioning rod; 62. a second connector; 63. a third connecting member; 631. a third cavity; 632. a chute; 633. a second waist-shaped hole; 64. a moving assembly; 641. a compression spring; 642. a moving block; 643. a pin shaft; 644. a flat gasket; 7. and (3) a bracket.

Detailed Description

The following describes specific embodiments of the present application with reference to the drawings.

Referring to fig. 1, fig. 1 shows a cross-sectional view of a mechanically switchable dispensing device according to an embodiment of the present application, including:

the one-inlet-multiple-outlet reversing valve 1 comprises a reversing valve body 11, an injection port 12, a plurality of output ports 13 and a plurality of valve rods 14;

a switching assembly 2 for mechanically switching one of the plurality of output ports 13 to communicate with the injection port 12;

a control valve 4, wherein the control valve 4 is connected with a medium inlet through a pipeline so as to receive the medium input from the outside; the hydraulic driving assembly 5 is respectively connected with the through hole of the control valve 4 and the injection hole 12 of the one-inlet-multiple-outlet reversing valve 1 through pipelines;

the jump component 6 is connected with the control valve 4 through the jump component 6, so that the hydraulic drive component 5 drives the control valve 4 to switch stations through the control jump component 6, and the hydraulic drive component 5 guides a medium passing through the control valve 4 into the one-inlet-one-outlet reversing valve 1;

in the process that the hydraulic driving assembly 5 controls the control valve 4 to guide the medium into the one-inlet-one-outlet reversing valve 1, the hydraulic driving assembly 5 drives the switching assembly 2 to switch one of the plurality of output ports 13 to be communicated with the injection port 12, and enables the one-inlet-one-outlet reversing valve 1 to output the medium through the output port 13 communicated with the input port.

According to the mechanical switching dispensing device, the medium is conveyed into the one-to-one reversing valve 1 by changing the conveying route of the medium, the hopping assembly 6 and the switching assembly 2 are driven to operate by the control valve 4 and the hydraulic driving assembly 5, and the medium is conveyed through the one-to-one pouring inlet 12 and the one-to-one pouring outlet 13 of the one-to-one reversing valve 1, so that the mechanical switching dispensing device can be widely applied to areas with deficient electric power resources.

The switching assembly 2 can control the position relationship between the valve rods 14 and the reversing valve body 11, so that any one valve rod 14 controls the corresponding output port 13 to be communicated with the injection port 12, and controls other valve rods 14 to control the corresponding output port 13 to be separated from the injection port 12, thereby ensuring one-to-one medium delivery between the injection port 12 and the output port 13.

Alternatively, the control valve 4 may include various forms, such as a two-position three-way control valve, a two-position four-way control valve, a four-position three-way control valve, etc., which can realize that the through holes at two ends of the control valve are communicated with at least one through hole between the through holes at two ends alternately, and the at least one communicated through hole is communicated with the hydraulic driving assembly 5 through a pipeline. In the embodiment of the present application, the control valve 4 is preferably a two-position three-way control valve.

Optionally, the hydraulic drive assembly 5 comprises a positive displacement reversing drive cylinder 51, a piston body 515 located within the positive displacement reversing drive cylinder 51, a piston rod 516 located on a side of the piston body 515 facing the switching assembly 2, and a drive unit 52 connected to the piston rod 516 for driving the piston rod 516 towards the switching assembly 2; wherein the piston body 515 is integrally provided with the piston rod 516.

The piston body 515 divides the cavity in the positive displacement reversing drive cylinder 51 into a first variable cavity 513 and a second variable cavity 514, the first variable cavity 513 and the second variable cavity 514 are connected with the control valve 4 through pipelines, the first variable cavity 513 is positioned on the side of the piston body 515 facing the switching assembly 2, and the second variable cavity 514 is positioned on the side of the piston body 515 facing away from the switching assembly 2;

with the spool 42 of the control valve 4 in the first station, the medium enters the first variable cavity 513 via the control valve 4; piston body 515, under the pressure of the medium in first variable cavity 513, moves piston rod 516 in the direction of second variable cavity 514; the medium in the second variable cavity 514 flows into the one-inlet-one-outlet reversing valve 1, and drives the jump component 6 to switch the valve core 42 to the second station under the condition that the piston rod 516 moves to the first jump position; the piston body 515 is now at the end of the cavity remote from the switching assembly 2;

When the spool 42 of the control valve 4 is located at the second station, the piston main body 515 is moved to the direction of the first variable cavity 513 by the piston rod 516 under the action of the driving unit 52, and the medium in the first variable cavity 513 enters the second variable cavity 514 through the control valve 4, and when the piston rod 516 is moved to the second jump position, the jump assembly 6 is driven to switch the spool 42 to the first station; the piston body 515 is now at the end of the cavity near the switching assembly 2;

during the movement of the piston body 515 in the direction of the first variable cavity 513, the piston body 515 drives one end of the piston rod 516 to drive the switching assembly 2 to switch one of the plurality of output ports 13 to be communicated with the injection port 12.

After the external medium enters the first variable cavity 513 through the control valve 4, the medium in the second variable cavity 514 can be conveyed to the one-inlet-multiple-outlet reversing valve 1; when the medium in the second variable cavity 514 enters the one-inlet-one-outlet reversing valve 1, the piston rod 516 reaches the first jump position, and when the medium reaches the first jump position, the jump component 6 can be driven to switch the valve core 42 to the second station; thereafter, the driving unit 52 can drive the piston body 515 to move toward the first variable cavity 513 through the piston rod 516; the medium in the first variable cavity 513 enters the second variable cavity 514 through the control valve 4 under the pushing of the piston main body 515, then the piston rod 516 reaches the second jump position, and when the piston rod 516 reaches the second jump position, the jump component 6 can be driven to switch the valve core 42 to the first station, and then one end of the piston rod 516, which is far away from the piston main body 515, drives the switching component 2 to switch one of the plurality of output ports 13 to be communicated with the injection port 12, and the medium in the one-inlet-one-outlet reversing valve 1 is led out to the mechanical switching dispensing device through the opened output port 13.

The mechanically switched dispensing device is operated in a cyclic manner according to the above-described flow, and the medium can be led out of the mechanically switched dispensing device via different outlet openings 13.

Optionally, the axis of the piston rod 516 is parallel to the axis of the spool 42.

The limitation of the position of the piston rod 516 can reduce the moving range of the guide sliding rod 517 in the sliding groove 632, and improves the space utilization rate of the mechanical switching dispensing device.

Optionally, the control valve 4 includes a first port 413, and an inlet 414 and a second port 415 respectively located at two sides of the first port 413; the first port 413 is in communication with the first variable cavity 513 via a line; the second port 415 is in communication with the second variable cavity 514 via a line; a delivery port 5121 communicated with the second variable cavity 514 is arranged at one end of the positive displacement reversing driving cylinder 51 far away from the switching assembly 2, and the delivery port 5121 is communicated with the injection port 12 of the one-inlet-multiple-outlet reversing valve 1 through a pipeline;

with the spool 42 of the control valve 4 in the first station, the inlet port 414 communicates with the first port 413, and the second port 415 is in a closed state; ambient medium enters the first variable cavity 513 via the inlet port 414 and the first port 413; piston body 515, under the pressure of the medium in first variable cavity 513, moves piston rod 516 in the direction of second variable cavity 514; the medium in the second variable cavity 514 enters the one-inlet-multiple-outlet reversing valve 1 through the conveying port 5121 and the injection port 12;

When the spool 42 of the control valve 4 is located at the second station, the first port 413 communicates with the second port 415, and the intake port 414 is in a closed state; the piston body 515 is moved in the direction of the first variable chamber 513 by the drive unit 52 and the piston rod 516, and the medium in the first variable chamber 513 enters the second variable chamber 514 via the first port 413 and the second port 415.

The first through hole 413 is formed to be capable of conveying the medium in the control valve 4 into the first variable cavity 513, so that the piston main body 515 can move towards the second variable cavity 514, and meanwhile, the medium in the first variable cavity 513 can be conveyed into the control valve 4, so that the piston main body 515 can move towards the first variable cavity 513; the second port 415 is formed to be capable of delivering the medium in the control valve 4 to the second variable cavity 514, so that the piston main body 515 moves toward the first variable cavity 513; the first port 413, the inlet 414, and the second port 415 can be always opened by limiting the positions of the first port 413, the inlet 414, and the second port 415. The delivery port 5121 is opened to deliver the medium in the second variable cavity 514 to the one-inlet-one-outlet selector valve 1, so that the piston body 515 is moved in the direction of the second variable cavity 514.

Optionally, the positive-displacement reversing driving cylinder 51 comprises a cylinder body 511 and a cylinder cover 512 which is positioned at one end of the cylinder body 511 away from the switching assembly 2 and is used for sealing an opening of the cylinder body 511; the cylinder body 511 is detachably connected to the cylinder head 512.

The cylinder body 511 is detachably connected with the cylinder cover 512, so that the piston main body 515 in the cylinder body 511 can be conveniently replaced, and the cavity is conveniently cleaned.

Alternatively, the cylinder 511 is provided with a protrusion on a circumferential side of one end facing the cylinder head 512, and the driving unit 52 includes a spring seat 521 at one end of the cylinder 511 facing the switching assembly 2, and a telescopic spring 522 interposed between the spring seat 521 and the protrusion and sleeved on the circumferential side of the cylinder 511; and the telescopic spring 522 is sleeved outside the cylinder 511.

The piston rod 516 penetrates through the center of the spring seat 521 and is fixedly connected with the spring seat 521;

when the piston body 515 is pressed by the medium in the first variable cavity 513, the piston body 515 drives the piston rod 516 and the spring seat 521 to move towards the direction of the second variable cavity 514, and the expansion spring 522 is compressed and deformed;

when the spool 42 of the control valve 4 is switched to the second position, the extension spring 522 is reset and drives the piston rod 516 to move toward the switching assembly 2.

During the movement of the piston body 515 toward the second variable cavity 514, the piston body 515 can drive the spring seat 521 to move toward the second variable cavity 514 through the piston rod 516, and the spring seat 521 compressively deforms the expansion spring 522. After the medium in the second variable cavity 514 enters the one-inlet-multiple-outlet reversing valve 1, the expansion spring 522 pushes the spring seat 521 to move towards the direction approaching the switching assembly 2 through the self elastic force, and in the process, the spring seat 521 can drive the piston main body 515 to move towards the first variable cavity 513 through the piston rod 516.

Alternatively, one end of all the lines communicating with the positive-displacement reversing drive cylinder 51 pass through the cylinder cover 512 to communicate with the cavity of the positive-displacement reversing drive cylinder 51; a through hole 5111 is formed in the side wall of the cylinder 511, one end of the through hole 5111 is communicated with the end face of the cylinder 511 facing the cylinder cover 512, the other end of the through hole 5111 is communicated with the inner wall of the cylinder 511 far away from the end of the cylinder cover 512, and the through hole 5111 is communicated with the first through hole 413 through a pipeline;

in a state where the medium enters the first variable cavity 513 through the first port 413, the medium bypasses the second variable cavity 514 through the through hole 5111 and enters the first variable cavity 513.

One end of all the pipelines communicated with the positive-displacement reversing driving cylinder 51 passes through the cylinder cover 512 to be communicated with the cavity of the positive-displacement reversing driving cylinder 51, so that the pipelines can be conveniently assembled and disassembled on the positive-displacement reversing driving cylinder 51. The opening of the through hole 5111 enables the corresponding pipeline to be installed at the position of the cylinder cover 512, so that the pipeline is installed more neatly.

Optionally, the switching assembly 2 includes a turntable 21 rotatably connected with the one-in-one-out reversing valve 1, a reversing piece 24 connected with the turntable 21, and a top block fixedly arranged on one end surface of the turntable 21;

in the case of driving the rotation of the turntable 21 by the commutator segments 24,

the ejector block rotates to abut against one valve stem 14 of the plurality of valve stems 14; causing the jacking block to jack up the valve rod 14 which is abutted against the jacking block vertically and causing an output port 13 controlled by the valve rod 14 abutted against the jacking block to be communicated with the injection port 12;

the rest of the valve rods 14 which do not collide with the top block collide with the end face of the rotary table 21, so that the output ports 13 controlled by the rest of the valve rods 14 which do not collide with the top block are isolated from the injection ports 12.

During the process of moving the piston rod 516 towards the switching assembly 2, the end of the piston rod 516 away from the piston main body 515 pushes the reversing piece 24 to move, and the reversing piece 24 drives the rotary table 21 and the jacking block to move from the lower part of one valve rod 14 to the lower part of the other valve rod 14.

When the ejector block lifts up one valve rod 14 vertically, the valve rod 14 communicates one corresponding output port 13 with the injection port 12, one end of the other valve rods 14 which are not in contact with the ejector block is in contact with the end face of the turntable 21, and the output port 13 controlled by the valve rod 14 which is in contact with the end face of the turntable 21 is separated from the injection port 12, so that the mechanical switching dispensing device can realize one-to-one medium conveying between the injection port 12 and the output port 13. The rotary table 21 can drive the ejector block to move from one position below the valve rod 14 to the other position below the valve rod 14 and to abut against the ejector block under the driving of the reversing piece 24, and the ejector block vertically jacks the valve rod 14 moving to the position above the ejector block, so that the switching of the injection port 12 communicated with the output port 13 is realized.

Alternatively, a rotation shaft 23 is provided vertically at a center position of the turntable 21 toward one end face of the valve stem 14, and the rotation shaft 23 is provided integrally with the turntable 21; the rotating shaft 23 is inserted into the reversing valve body 11, is rotatably connected with the reversing valve body 11, and is axially clamped with the reversing valve body 11 through a bearing, so that the turntable 21 is prevented during operation.

The rotating shaft 23 is arranged so that the reversing piece 24 can drive the rotary table 21 to rotate around the rotating shaft 23, so that the moving mode of the top block is determined to be circular movement, and the occupied space of the rotary table 21 in the process of driving the top block to move is further saved.

A bearing sleeve 15 is arranged between the reversing valve body 11 and the turntable 21, and the bearing sleeve 15 is sleeved on the outer side of the bottom of the rotating shaft 23 so as to stabilize the bearing on the rotating shaft 23.

In this embodiment, the one-in-multiple-out reversing valve 1 may include one-in-four-out reversing valve, one-in-five-out reversing valve, and the like. Taking a four-in reversing valve as an example, referring to fig. 2 and fig. 3, fig. 2 shows a cross-sectional view of the two-in reversing valve 1 and the switching component 2 in an assembled state according to an embodiment of the present application; fig. 3 is a schematic diagram showing an overall structure of the one-in-one-out reversing valve 1 and the switching assembly 2 in an assembled state according to an embodiment of the present application; the number of the valve rods 14 and the injection ports 12 is four, and the four valve rods 14 are arrayed above the turntable 21 at equal intervals along the circumferential direction; the center lines of the four valve rods 14 are parallel to the axis of the rotating shaft 23, and the distances between the four valve rods 14 and the rotating shaft 23 are equal; the top piece is equidistant from the axis of rotation 23 as the valve stem 14 is equidistant from the axis of rotation 23.

The positions of the four valve rods 14, the axial direction of the central lines of the four valve rods 14 and the rotating shaft 23, the distance between the jacking block and the rotating shaft 23, and the distance between the valve rods 14 and the rotating shaft 23 are limited, so that each valve rod 14 which is abutted against the jacking block can be accurately jacked.

Alternatively, the overall shape of the turntable 21 is a vertically placed cylinder, and four accommodating grooves 211 are equally spaced along the circumferential direction on the side wall of the turntable 21; each accommodating groove 211 is fixedly provided with a supporting rod 22; one end of each of the reversing pieces 24 is inserted into the corresponding accommodating groove 211 and is rotatably connected with the supporting rod 22, wherein the number of the reversing pieces 24 is four, and the four reversing pieces 24 are in one-to-one correspondence with the supporting rod 22.

The number of the reversing pieces 24 is the same as that of the valve rods 14, and the four reversing pieces 24 are arranged at equal intervals along the circumferential direction, so that in the process of intermittently and periodically pushing the reversing pieces 24 to drive the turntable 21 to rotate, the turntable 21 intermittently and periodically drives the ejector blocks to rotate, and further the ejector blocks can periodically jack different valve rods 14, and accordingly switching of the output ports 13 communicated with the injection ports 12 is achieved.

Optionally, the width of the opening of the accommodating groove 211 is greater than the width of the commutator segment 24 in the accommodating groove 211, and the commutator segment 24 is inserted into the accommodating groove 211 from the middle position of the accommodating groove 211 under the condition that the commutator segment 24 is not subjected to other external forces, so that the commutator segment 24 can rotate for a certain angle relative to the corresponding supporting rod 22 in the process of pushing the commutator segment 24 to drive the turntable 21 to rotate, the angle is determined by the width of the accommodating groove 211 and the width of the commutator segment 24 together, and then the impact force applied by the piston rod 516 to the commutator segment 24 can be buffered in the process of pushing the commutator segment 24 to rotate by using the piston rod 516, thereby prolonging the service life of the commutator segment 24.

A torsion spring 25 for driving the commutator segments 24 to restore the initial position is sleeved on the peripheral side of the supporting rod 22. The torsion spring 25 is arranged to enable the commutator segments 24 to restore the commutator segments 24 to the original position relative to the turntable 21 without being pushed by the piston rod 516; and in the process of pushing one of the commutating segments 24 to rotate by the piston rod 516, the torsion spring 25 can enable the commutating segment 24 which cannot rotate with the turntable 21 to be pushed by the piston rod 516, and enable the commutating segment 24 which cannot rotate with the turntable 21 to be restored to the initial position relative to the turntable 21 again without being blocked by the piston rod 516, so that the commutating segment 24 which cannot rotate with the turntable 21 can be pushed at a preset position by the piston rod 516.

Alternatively, the center line of the support rods 22 is parallel to the axis of the rotation shaft 23, and each support rod 22 is equidistant from the rotation shaft 23; the support bars 22 are arranged at equal intervals.

In the case that the piston rod 516 performs a reciprocating rectilinear motion at a predetermined position, the piston rod 516 pushes the commutator segments 24 on the motion track of the piston rod 516 to rotate, and the limitation on the position of the support rods 22 can ensure that the commutator segments 24 on each support rod 22 can be pushed by the piston rod 516, and ensure that the pushed distance of each commutator segment 24 is the same.

Alternatively, referring to fig. 4, fig. 4 shows a schematic diagram of the mechanical switching dispensing device of the present embodiment for showing the positional relationship between the commutating segments 24 and the piston rods 516, where the number of the commutating segments 24 is equal to the number of the valve stems 14.

The limitation of the number of the commutating segments 24 can ensure that the jacking block can accurately rotate from the lower part of one valve rod 14 to the lower part of the other valve rod 14 and jack up the corresponding valve rod 14 vertically under the condition that each piston rod 516 pushes one commutating segment 24 to rotate.

Optionally, in combination with fig. 2, the reversing valve body 11 includes a valve cover 111 and a main valve body 112; the valve cover 111 is positioned at one side of the main valve body 112 far away from the turntable 21, the bottom center position of the valve cover 111 is downwards protruded, the outer side of the protruded position of the valve cover 111 is sleeved with a supporting sleeve 117, and the outer side wall of the supporting sleeve 117 is in threaded connection with the main valve body 112; the inner side wall of the supporting sleeve 117 is in threaded connection with the main valve body 112; thereby realizing the detachable connection of the valve cover 111 and the main valve body 112; the valve rod 14 penetrates the main valve body 112 and is inserted into the bottom of the valve cover 111.

The reversing valve body 11 is detachably arranged, so that the valve core 42 can be conveniently replaced, and the interior of the reversing valve body 11 can be conveniently cleaned. A valve seat 113 for forming a valve chamber is provided in the main valve body 112, and the valve seat 113 is detachably connected to the main valve body 112, and the valve stem 14 penetrates the valve seat 113 and is slidably connected to the valve seat 113. O-rings 114 are sleeved on the periphery of the valve seat 113 and the protruding part of the bottom of the valve cover 111 to increase the tightness of the one-inlet-multiple-outlet reversing valve 1.

The two ends of the valve rod 14 and the outer side of the valve seat 113 are provided with support pads 115 positioned in the reversing valve body 11, and the support pads 115 are slidably connected with the valve rod 14. During the up-and-down movement of the valve stem 14, the valve stem 14 will impact the valve seat 113, and the support pad 115 can relieve the impact of the support seat on the main valve body 112, so that noise can be reduced, and the valve seat 113 and the main valve body 112 can be protected.

The bottom of the main valve body 112 is fixedly provided with an antifriction sleeve 116, and the antifriction sleeve 116 is sleeved with the bottom end of the valve rod 14 to reduce friction force applied to the valve rod 14 in the process of moving up and down, so that the service life of the valve rod 14 is prolonged.

Optionally, a pressing assembly 3 for always abutting the valve stem 14 against the turntable 21 or the top block toward one end of the turntable 21 is further included; the pressing assembly 3 comprises a reset spring 32 and a spring support 31 which are sequentially arranged from top to bottom along the vertical direction, one end of the reset spring 32 is fixedly connected with the valve cover 111, and the other end of the reset spring 32 is fixedly connected with one end, far away from the turntable 21, of the valve rod 14 through the spring support 31.

In the working process of the one-in-multiple-out reversing valve 1, the return spring 32 can enable one end of the corresponding valve rod 14, which is far away from the spring support 31, to be in contact with the turntable 21 or the top block through the spring support 31, so that the working stability of the mechanical switching dispensing device is ensured.

To further illustrate the operation state of the switching assembly 2 of the present embodiment, fig. 4 and 5 are combined, and fig. 5 shows a schematic diagram of the mechanical switching dispensing device of the present embodiment for showing the positional relationship between the commutator segments 24 and the piston rod 516. In the figure, a one-in-multiple-out reversing valve 1 is a one-in-five-out reversing valve. As can be seen, the number of the commutator segments 24 is five.

During the reciprocating motion, the piston rod 516 pushes one of the segments 24 to rotate counterclockwise by a predetermined angle, so that the turntable 21 rotates by a corresponding predetermined angle. The magnitude of the predetermined angle is determined by the number of the commutating segments 24, for example, in a one-in-five-out commutating valve, the magnitude of the predetermined angle is seventy-two degrees, that is, the magnitude of the predetermined angle is equal to a value obtained by dividing three hundred sixty degrees by the number of the commutating segments 24.

In the process that the piston rod 516 pushes one reversing piece 24 to drive the turntable 21 to rotate, the following steps are defined: the pushed commutator segment 24 is a first commutator segment; and the segments 24 located immediately adjacent to the first segment in the clockwise direction with respect to the rotation shaft 23 are second segments, each segment 24 having a certain initial position with respect to the turntable 21 without external force. The first commutator bar rotates counterclockwise relative to the rotating shaft 23 under the driving of the turntable 21 in the process of being pushed by the piston rod 516 to rotate counterclockwise by the preset angle, but due to the obstruction of the piston rod 516, one end of the second commutator bar, which is close to the piston rod 516, is kept stationary relative to the main valve body 112, so that the second commutator bar 24 rotates clockwise relative to the support rod 22 connected with the second commutator bar by a certain angle. And in the case where the driving of the first commutator bar by the piston rod 516 is stopped and the second commutator bar is not blocked by the piston rod 516, the second commutator bar is rotated counterclockwise by the torsion spring 25 (not shown) until the initial position with respect to the turntable 21 is restored, so that the second commutator bar can be pushed by the piston rod 516 during the next reciprocating rectilinear motion. Thus, the driving assembly intermittently pushes the reversing sheet 24 to drive the turntable 21 to rotate by a preset angle.

Optionally, referring to fig. 6, fig. 6 is a schematic diagram showing a mechanical switching dispensing device for showing an internal structure of the jump component 6 according to an embodiment of the present application; the valve core 42 protrudes out of the housing 41 of the control valve 4;

the jump component 6 comprises a first connecting piece 61, a second connecting piece 62 and a third connecting piece 63; the first connector 61 is provided with a first positioning part 611, a second positioning part 612 and a third positioning part 613 in sequence along the length direction thereof; the second positioning portion 612 is located between the first positioning portion 611 and the third positioning portion 613; the first connecting piece 61 slides and is hinged with one end of the valve core 42 extending out of the shell 41 through the first positioning part 611; one end of the second connecting piece 62 is hinged with the first connecting piece 61 through a third positioning part 613; one end of the third connecting member 63 is hinged to the first connecting member 61 through a second positioning portion 612; the other end of the second connecting piece 62 slides and is hinged with the middle position of the third connecting piece 63;

in the process that the valve core 42 moves from the first station to the second station, the third connecting piece 63 drives the second connecting piece 62 and the first connecting piece 61 to switch from the first position to the second position together, and the first connecting piece 61 instantly drives the valve core 42 to move from the first station to the second station;

In the process of moving the valve core 42 from the second station to the first station, the third connecting piece 63 drives the second connecting piece 62 and the first connecting piece 61 to switch from the second position to the first position together, and the first connecting piece 61 instantly drives the valve core 42 to move from the second station to the first station.

In the process of driving the third connecting piece 63 to enable the third connecting piece 63 to drive the second connecting piece 62 and the first connecting piece 61 to move, the third connecting piece 63 rotates relative to the second positioning part 612, so that the direction of the pushing force applied by the second connecting piece 62 to the first connecting piece 61 rotates relative to the second positioning part 612 from one side to the central line of the length direction of the first connecting piece 61; after the direction of the thrust force is parallel to the length direction of the first connecting piece 61, the third connecting piece 63 continuously drives the second connecting piece 62 to rotate relative to the third positioning part 613, so that the thrust force direction is rotated to the other side of the center line of the length direction of the first connecting piece 61; at this time, the first connecting piece 61 instantaneously drives the valve core 42 to move relative to the housing 41, that is, the valve core 42 is moved from the first station to the second station or the valve core 42 is moved from the second station to the first station.

As shown in fig. 5 and 6, the first station is that the valve core 42 is located at the right end in the housing 41, in this state, the first port 413 is in communication with the second port 415, and the jump assembly 6 is in the first position; as shown in fig. 4, the second station is that the spool 42 is located at the left end in the housing 41, in which the first port 413 is in communication with the inlet port 414, and the jump module 6 is in the second position.

The jump component 6 comprises a first connecting piece 61, a second connecting piece 62 and a third connecting piece 63, and is simple in structure and convenient for mass production. In the process that the jump component 6 drives the valve core 42 to perform station switching, the valve core 42 can be instantaneously driven to perform station switching, so that the mechanical switching dispensing device can be suitable for exploiting and conveying natural gas under high-pressure working conditions, the problem that large-flow conveying cannot be met due to slow station switching of the valve core 42 is avoided, and meanwhile, the damage of the valve core 42 to the shell 41 caused by pressure change in the process of station switching is also relieved, wherein the high pressure is a pressure greater than or equal to 10 MPa.

Optionally, referring to fig. 7, fig. 7 is a schematic diagram showing a mechanical switching dispensing device for showing an internal structure of the hopping assembly 6 according to an embodiment of the present application; a third cavity 631 is formed at one end of the third connecting member 63 near the first connecting member 61; the end of the second connecting member 62 connected with the third connecting member 63 is provided with a moving assembly 64, and the moving assembly 64 includes a compression spring 641 disposed in the third cavity 631, and a moving block 642 disposed at an end of the compression spring 641 facing the second connecting member 62; the moving block 642 is in abutting connection with one end of the compression spring 641 facing the second connecting piece 62; the second connecting member 62 is hinged to the moving block 642.

The moving assembly 64 can be disposed in a process that the third connecting piece 63 drives the second connecting piece 62 to rotate relative to the third positioning portion 613. When the first connecting piece 61 applies pressure to the second connecting piece 62 through the third connecting part, the second connecting piece 62 drives the moving block 642 to press the compression spring 641, so that the pressure applied to the second connecting piece 62 is relieved; when the first connecting member 61 applies a pulling force to the second connecting member 62 through the third connecting portion, the moving block 642 is driven by the second connecting member 62 to move in a direction away from the compression spring 641, thereby relieving the pulling force applied to the second connecting member 62; and thus the service life of the second connecting member 62 can be prolonged.

The piston rod 516 slides and is hinged with the other end of the third connecting piece 63; a bar-shaped chute 632 is formed on the side surface of the third connecting member 63, which is far from the first connecting member 61 and faces the piston rod 516; the length direction of the sliding groove 632 is the same as the length direction of the third connecting piece 63; a guide sliding rod 517 is fixedly arranged at one end of the piston rod 516 facing the third connecting piece 63; the guide sliding rod 517 is inserted into the sliding groove 632 and is connected with the sliding groove 632 in a sliding way; wherein, the third connecting member 63 is away from one end of the first connecting member 61 and protrudes outwards towards the position of the piston rod 516, and the sliding groove 632 is formed at the protruding portion of the third connecting member 63.

The structure of the chute 632 in this embodiment may include various kinds, such as the first case: the part of the chute 632, which is close to the first connecting piece 61 and protrudes through the third connecting piece 63, faces the side surface of the first connecting piece 61, and the other end of the chute 632 is located in the protruding part of the third connecting piece 63, so as to reduce the time for opening the chute 632; second case: both ends of the sliding groove 632 penetrate through the protruding portion of the third connecting piece 63, so as to facilitate the disassembly of the guiding sliding rod 517. The chute 632 in the present embodiment is exemplified by the second case.

Alternatively, the second positioning portion 612 includes a second positioning rod 411 rotatably connected to the first connecting member 61, the second positioning rod 411 passes through the first connecting member 61, and two ends of the second positioning rod 411 are fixedly connected to the housing 41 respectively; one end of the third connecting member 63 is rotatably connected to the second positioning rod 411.

The second positioning rod 411 passes through the first connecting piece 61 and is fixedly connected with the housing 41, so that stable rotation of the first connecting piece 61 relative to the second positioning portion 612 can be ensured, and the first connecting piece 61 can stably drive the valve core 42 to perform station switching.

Optionally, a first waist-shaped hole is formed at one end of the valve core 42 extending out of the shell 41 of the two-position multi-way control valve; the length direction of the first waist-shaped hole is perpendicular to the length direction of the valve core 42;

The first positioning portion 611 includes a first positioning rod 614 fixedly connected to one end of the first connecting member 61, and the first positioning rod 614 slides and is hinged to the valve core 42 through a first waist-shaped hole.

Because the first connecting piece 61 is rotationally connected with the second positioning rod 411, in the process that the first connecting piece 61 drives the valve core 42 to perform station switching, one end of the first connecting piece 61 facing the valve core 42 moves upwards or downwards relative to the valve core 42, that is, the first positioning rod 614 moves upwards or downwards relative to the valve core 42, and the opening of the first waist-shaped hole can provide a space for the movement of the first positioning rod 614, so that the first positioning rod 614 is prevented from blocking the rotation of the first connecting piece 61, and the station switching of the valve core 42 is further affected.

Optionally, a limiting plate 412 is fixedly disposed at one end of the housing 41 facing the first connecting member 61, a thrust port 4121 is formed in a side wall of the limiting plate 412 facing the third connecting member 63, and the first connecting member 61 passes through the thrust port 4121 to be connected with the valve core 42; the first positioning part 611 and the third positioning part 613 are respectively positioned at two sides of the thrust port 4121; the second positioning portion 612 is located at an end of the thrust port 4121 facing the spool 42.

Since the two states of the first connecting piece 61 abutting against the limiting plate 412 through the thrust opening 4121 correspond to the states of the spool 42 located at two different stations, the opening of the thrust opening 4121 on the limiting plate 412 can limit the rotation angle of the first connecting piece 61, so that the accuracy of the first connecting piece 61 driving the spool 42 to perform station switching is improved.

Optionally, with reference to fig. 8, fig. 8 illustrates an isometric view of the hopping assembly 6 of an embodiment of the present application; a second waist-shaped hole 633 is formed on the side surface connected with the third connecting piece 63; the second waist-shaped hole 633 is located between the chute 632 and the second positioning portion 612, and the length direction of the second waist-shaped hole 633 is the same as the length direction of the third connecting member 63; a pin 643 is disposed in the second waist-shaped hole 633, and the pin 643 is slidably connected with the third connecting member 63 through the second waist-shaped hole 633; the pin shaft 643 is rotatably connected with one end of the second connecting piece 62 away from the third positioning part 613; the pin 643 is inserted into the moving block 642.

The second waist-shaped hole 633 and the pin 643 can ensure that the moving block 642 moves stably in the third cavity 631, and prevent the moving block 642 from rotating relative to the third connecting member 63 during movement; the pin 643 is inserted into the moving block 642 to facilitate the removal of the moving block 642 and the replacement of the compression spring 641.

Optionally, the number of the second waist-shaped holes 633 is two, and the second waist-shaped holes are symmetrically arranged on two sides of the third connecting piece 63; the pin shaft 643 penetrates through the moving block 642, and two ends of the pin shaft 643 extend out of the third connecting piece 63; both ends of the pin shaft 643 extending out of the third connecting piece 63 are fixedly provided with flat washers 644; and the diameter of the flat washer 644 is larger than the width of the second kidney-shaped hole 633.

The flat washer 644 is provided to limit the position of the pin shaft 643 in the third connecting member 63, and prevent the pin shaft 643 from being separated from the moving block 642 through the second waist-shaped hole 633 during the moving process of the moving block 642, thereby ensuring the stability of the operation of the jump assembly 6.

Optionally, a bracket 7 for supporting the one-in-multiple-out directional valve 1, the control valve 4 and the hydraulic drive assembly 5. The support 7 can support and fix the one-in-multiple-out reversing valve 1, the control valve 4, the hydraulic driving assembly 5, the switching assembly 2 and the jump assembly 6, so that the mechanical switching dispensing device can work stably.

To further illustrate the operation of the mechanically switched dispensing device of this embodiment, referring to table 1, table 1 shows the operation of the components of the mechanically switched dispensing device of this embodiment during a cycle, wherein "position" represents the position of the piston body 515 within the cavity of the positive-displacement reversing drive cylinder 51 and defines: a is the piston body 515 at the left end of the cavity; b is the piston body 515 at the right end of the cavity.

In this example, the cycle period refers to the period consisting of A.fwdarw. B, B, B.fwdarw. A, A in Table 1.

The position a in the second column and the position a in the sixth column in table 1 are the same position. The difference is that: the state of each component at position a of the second column is an initial state, and the state of each component at position a of the sixth column is a motion state in a cycle period. In the initial state, the telescopic spring and the jump component do not start to act.

TABLE 1

Referring to fig. 1, 4 and 5, when the piston body 515 is located at the left end point of the cavity, the inlet 414 of the control valve 4 is in communication with the first port 413, the second port 415 is in a closed state, at this time, the external medium starts to enter the control valve 4 from the inlet 414, and the control valve 4 is in communication with the first variable cavity 513 through the first port 413; the jacking block in the switching assembly 2 jacks up a valve rod 14 of the one-inlet-one-outlet reversing valve 1, so that an output port 13 controlled by the jacked valve rod 14 is in a conducting state with the injection port 12, and the other output ports 13 are in a blocking state with the injection port 12.

During the start of the passage of the external medium through the control valve 4 into the first variable cavity 513, the piston body 515 starts to move from the left end point to the right end point; the piston main body 515 drives the spring seat 521 to move towards the left end point through the piston rod 516, and the spring seat 521 begins to compress the expansion spring 522 and deforms the expansion spring 522; in the process, the jump component 6 does not drive the valve core 42 to jump; the inlet 414 of the control valve 4 is still in a communication state with the first port 413, the second port 415 is still in a closed state, and external medium enters the control valve 4 from the inlet 414 and then enters the first variable cavity 513 from the first port 413 through a pipeline; in this process, the jack block in the switching assembly 2 is kept still, and continuously jacks up a valve rod 14 of the one-in-one-out reversing valve 1, so that the output port 13 controlled by the jacked valve rod 14 is in a conducting state with the injection port 12, and the other output ports 13 are in a blocking state with the injection port 12.

When the piston body 515 is moved to the right end, the expansion spring 522 stops being deformed by compression, but the expansion spring 522 is still in a compressed state, and there is a tendency to return to the original position; at this time, the jump component 6 drives the valve core 42 to jump instantaneously; so that the inlet 414 of the control valve 4 is in a closed state, the first port 413 is in communication with the second port 415, the first variable cavity 513 is in communication with the control valve 4 through the first port 413, and the control valve 4 is in communication with the second variable cavity 514 through the second port 415; the jacking block in the switching assembly 2 keeps still, and continuously jacks up a valve rod 14 of the one-in-one-out reversing valve 1, so that an output port 13 controlled by the jacked valve rod 14 is in a conducting state with the injection port 12, and the other output ports 13 are in a blocking state with the injection port 12.

After the piston body 515 moves to the right end point, the expansion spring 522 starts to restore to the original state, and drives the piston body 515 to move from the right end point to the left end point through the spring seat 521 and the piston rod 516 under the action of self elastic force; in this process, the medium in the first variable cavity 513 enters the second variable cavity 514 through the first through hole 413 and the second through hole 415, and the medium entering the second variable cavity 514 cannot directly enter the one-inlet-one-outlet reversing valve 1 through the conveying hole 5121 because the space in the second variable cavity 514 is continuously increased during the medium entering the second variable cavity 514; in the process, the piston rod 516 moves towards the direction of the switching assembly 2, and pushes the top block on the turntable 21 to rotate through the reversing piece 24, so that the top block is separated from the valve rod 14 abutted against the top block and rotates towards the direction of the other valve rod 14; in this process, all the output ports 13 are in a state of being blocked from the injection port 12.

When the piston body 515 is moved to the left end point, the expansion spring 522 stops deforming; at this time, the jump component 6 drives the valve core 42 again to jump instantaneously; so that the inlet 414 of the control valve 4 is in communication with the first port 413, the second port 415 is in a closed state, the external medium enters the control valve 4 through the inlet 414, and the first variable cavity 513 is in communication with the control valve 4 through the first port 413; the jacking block in the switching assembly 2 jacks up the other valve rod 14 of the one-in-one-out reversing valve 1, the output port 13 controlled by the jacked valve rod 14 is in a conducting state with the injection port 12, and the other output ports 13 are in a blocking state with the injection port 12.

The mechanically switched dispensing device is operated in a cyclic manner according to the above-described flow, and the external medium can be led out of the mechanically switched dispensing device via different outlet openings 13.

In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used merely to indicate relative positional relationships between the relevant portions, and do not limit the absolute positions of the relevant portions.

Herein, "first", "second", etc. are used only for distinguishing one another, and do not denote any order or importance, but rather denote a prerequisite of presence.

Herein, "equal," "same," etc. are not strictly mathematical and/or geometric limitations, but also include deviations that may be appreciated by those skilled in the art and allowed by fabrication or use, etc.

Unless otherwise indicated, numerical ranges herein include not only the entire range within both of its endpoints, but also the several sub-ranges contained therein.

While the preferred embodiments and examples of the present application have been described in detail with reference to the accompanying drawings, the present application is not limited to the above-described embodiments and examples, and various changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A mechanically switched dispensing device, comprising:

a one-in-multiple-out reversing valve (1), wherein the one-in-multiple-out reversing valve (1) is provided with an injection port (12) and a plurality of output ports (13);

a switching assembly (2) for mechanically switching one of a plurality of output ports (13) in communication with the injection port (12);

the control valve (4) is connected with the medium inlet through a pipeline so as to receive the medium input from the outside;

the hydraulic driving assembly (5) is respectively connected with the through hole of the control valve (4) and the injection hole (12) of the one-inlet-multiple-outlet reversing valve (1) through pipelines;

The jump component (6), the said hydraulic drive component (5) is connected with control valve (4) through the said jump component (6), in order to make the said hydraulic drive component (5) drive the control valve (4) to switch the station through controlling the jump component (6), and the said hydraulic drive component (5) will be led into the said one through the medium of the control valve (4) to go into the change-over valve (1);

in the process that the hydraulic driving assembly (5) controls the control valve (4) to guide the medium into the one-inlet-and-multiple-outlet reversing valve (1), the hydraulic driving assembly (5) drives the switching assembly (2) to switch one of the plurality of output ports (13) to be communicated with the injection port (12), and the one-inlet-and-multiple-outlet reversing valve (1) is enabled to output the medium through the output port (13) communicated with the injection port (12);

the hydraulic driving assembly (5) comprises a positive-displacement reversing driving cylinder (51), a piston main body (515) positioned in the positive-displacement reversing driving cylinder (51), a piston rod (516) fixedly connected with the piston main body (515) and positioned on one side of the piston main body (515) facing the switching assembly (2), and a driving unit (52) connected with the piston rod (516) and used for driving the piston rod (516) to move towards the switching assembly (2);

the piston main body (515) divides a cavity in the positive-displacement reversing driving cylinder (51) into a first variable cavity (513) and a second variable cavity (514), the first variable cavity (513) and the second variable cavity (514) are connected with the control valve (4) through pipelines, the first variable cavity (513) is positioned on one side of the piston main body (515) facing the switching assembly (2), and the second variable cavity (514) is positioned on one side of the piston main body (515) facing away from the switching assembly (2);

The port of the control valve (4) comprises a first port (413), and an inlet (414) and a second port (415) which are respectively positioned at two sides of the first port (413); the first port (413) is in communication with the first variable cavity (513) via a line; the second port (415) is in communication with the second variable cavity (514) via a line; one end of the positive-displacement reversing driving cylinder (51) far away from the switching component (2) is provided with a conveying port (5121) communicated with the second variable cavity (514), and the conveying port (5121) is communicated with an injection port (12) of the one-inlet multi-outlet reversing valve (1) through a pipeline;

the cylinder body (511) is provided with a bulge towards the circumference of one end of the cylinder cover (512), and the driving unit (52) comprises a spring seat (521) positioned at one end of the cylinder body (511) towards the switching assembly (2), and a telescopic spring (522) positioned between the spring seat (521) and the bulge and sleeved on the circumference of the cylinder body (511);

the piston rod (516) penetrates through the center of the spring seat (521) and is fixedly connected with the spring seat (521);

one end of all the pipelines communicated with the positive-displacement reversing driving cylinder (51) passes through a cylinder cover (512) to be communicated with the cavity of the positive-displacement reversing driving cylinder (51); a through hole (5111) is formed in the side wall of the cylinder body (511), one end of the through hole (5111) is communicated with the end face, facing the cylinder cover (512), of the cylinder body (511), the other end of the through hole (5111) is communicated with the inner wall, far away from the cylinder cover (512), of the cylinder body (511), and the through hole (5111) is communicated with the first through hole (413) through a pipeline;

The valve core (42) protrudes from the housing (41) of the control valve (4).

2. The mechanically switched dispensing device of claim 1, wherein:

in the case of a spool (42) of a control valve (4) being located at a first station, the medium enters a first variable cavity (513) via the control valve (4); the piston main body (515) drives the piston rod (516) to move towards the second variable cavity (514) under the pressure of the medium in the first variable cavity (513); the medium in the second variable cavity (514) flows into the one-inlet-multi-outlet reversing valve (1), and under the condition that the piston rod (516) moves to the first jump position, the jump component (6) is driven to enable the valve core (42) to be switched to the second station;

when the valve core (42) of the control valve (4) is located at the second station, the piston main body (515) moves towards the direction of the first variable cavity (513) under the action of the driving unit (52), medium in the first variable cavity (513) enters the second variable cavity (514) through the control valve (4), and when the piston rod (516) moves to the second jump position, the jump assembly (6) is driven to enable the valve core (42) to be switched to the first station;

during the process that the piston main body (515) moves towards the first variable cavity (513), one end of the piston main body (515) drives the piston rod (516) to drive the switching assembly (2) to switch one of the plurality of output ports (13) to be communicated with the injection port (12).

3. The mechanically switched dispensing device of claim 2, wherein:

when the valve core (42) of the control valve (4) is positioned at the first station, the inlet (414) is communicated with the first port (413), and the second port (415) is in a closed state; -the external medium enters the first variable cavity (513) via said inlet opening (414) and the first port (413); the piston main body (515) drives the piston rod (516) to move towards the second variable cavity (514) under the pressure of the medium in the first variable cavity (513); the medium in the second variable cavity (514) enters the one-inlet-multiple-outlet reversing valve (1) through the conveying port (5121) and the injection port (12);

when the valve core (42) of the control valve (4) is positioned at the second station, the first port (413) is communicated with the second port (415), and the inlet (414) is in a closed state; the piston body (515) is moved by the drive unit (52) and the piston rod (516) in the direction of the first variable cavity (513), and the medium in the first variable cavity (513) enters the second variable cavity (514) via the first port (413) and the second port (415).

4. A mechanically switched dispensing device as claimed in claim 3, wherein: the positive-displacement reversing driving cylinder (51) comprises a cylinder body (511) and a cylinder cover (512) which is positioned at one end of the cylinder body (511) away from the switching assembly (2) and is used for sealing an opening of the cylinder body (511); the cylinder body (511) is detachably connected with the cylinder cover (512).

5. The mechanically switched dispensing device of claim 4, wherein:

under the condition that the piston main body (515) is under the pressure of the medium in the first variable cavity (513), the piston main body (515) drives the piston rod (516) and the spring seat (521) to move towards the direction of the second variable cavity (514), and the telescopic spring (522) is compressively deformed;

when the valve core (42) of the control valve (4) is switched to the second station, the telescopic spring (522) is reset, and the piston rod (516) is driven to move towards the direction of the switching assembly (2).

6. The mechanically switched dispensing device of claim 4, wherein:

in a state where the medium enters the first variable cavity (513) through the first port (413), the medium bypasses the second variable cavity (514) through the through hole (5111) and enters the first variable cavity (513).

7. The mechanically switched dispensing device of claim 1, wherein: the one-inlet-multiple-outlet reversing valve (1) further comprises a reversing valve body (11) and a plurality of valve rods (14); the switching assembly (2) comprises a rotary table (21) rotationally connected with the one-in and one-out reversing valve (1), a reversing sheet (24) connected with the rotary table (21), and a top block fixedly arranged on one end face of the rotary table (21);

Under the condition that the turntable (21) is driven to rotate by the reversing sheet (24),

the ejector block rotates to be in contact with one valve rod (14) of the plurality of valve rods (14); the valve rod (14) which is abutted against the jacking block is jacked up vertically, and an output port (13) controlled by the valve rod (14) which is abutted against the jacking block is communicated with the injection port (12);

the rest of valve rods (14) which are not in conflict with the top blocks are in conflict with the end face of the rotary table (21), so that an output port (13) controlled by the rest of valve rods (14) which are not in conflict with the top blocks is isolated from the injection port (12).

8. The mechanically switched dispensing device of claim 2, wherein:

the jump component (6) comprises a first connecting piece (61), a second connecting piece (62) and a third connecting piece (63); the first connecting piece (61) is sequentially provided with a first positioning part (611), a second positioning part (612) and a third positioning part (613) along the length direction of the first connecting piece; the second positioning part (612) is positioned between the first positioning part (611) and the third positioning part (613); the first connecting piece (61) slides and is hinged with one end of the valve core (42) extending out of the shell (41) through a first positioning part (611); one end of the second connecting piece (62) is hinged with the first connecting piece (61) through a third positioning part (613); one end of the third connecting piece (63) is hinged with the first connecting piece (61) through a second positioning part (612); the other end of the second connecting piece (62) slides and is hinged with the middle position of the third connecting piece (63);

In the process that the valve core (42) moves from the first station to the second station, the third connecting piece (63) drives the second connecting piece (62) and the first connecting piece (61) to be switched from the first position to the second position together, and the first connecting piece (61) instantly drives the valve core (42) to move from the first station to the second station;

in the process that the valve core (42) moves from the second station to the first station, the third connecting piece (63) drives the second connecting piece (62) and the first connecting piece (61) to be switched from the second position to the first position together, and the first connecting piece (61) instantly drives the valve core (42) to move from the second station to the first station.

9. The mechanically switched dispensing device of claim 8, wherein: one end of the second connecting piece (62) connected with the third connecting piece (63) is provided with a moving assembly (64), and the moving assembly (64) comprises a compression spring (641) and a moving block (642) positioned at one end of the compression spring (641) facing the second connecting piece (62); the moving block (642) is in abutting connection with one end of the compression spring (641) facing the second connecting piece (62); the second connecting piece (62) is hinged with the moving block (642).

10. The mechanically switched dispensing device of claim 1, further comprising: and the bracket (7) is used for supporting the one-inlet-multiple-outlet reversing valve (1), the control valve (4) and the hydraulic driving assembly (5).