WO2021232544A1

WO2021232544A1 - Asc semi-automatic switching system

Info

Publication number: WO2021232544A1
Application number: PCT/CN2020/098823
Authority: WO
Inventors: 周如伟
Original assignee: 湖州贝德流体设备有限公司
Priority date: 2020-05-22
Filing date: 2020-06-29
Publication date: 2021-11-25
Also published as: CN111678042A; CN111678042B

Abstract

An ASC semi-automatic switching system, comprising a fixed connection support (3). A gas flow-discharging mechanism (6) is fixedly mounted on an upper end surface of the fixed connection support (3); a fixed pressure valve mechanism (1) is fixedly mounted at one end of the gas flow-discharging mechanism (6); a regulating pressure valve mechanism (2) is fixedly mounted at the other end of the gas flow-discharging mechanism (6); the regulating pressure valve mechanism (2) comprises a second gas-guiding valve body (201), a second connection end cover (202), a steering connector (203), a steering gas-guiding block (204), a movable connection block (205), a reset spring (206), a guide rod (207), and a gas-guiding hole (208); the inner side of the second gas-guiding valve body (201) is provided with the gas-guiding hole (208); and the movable connection block (205) is provided at the upper end of the gas-guiding hole (208). By means of mechanical switching control, safety and reliability are achieved, the number of times of maintenance is reduced, and an uninterrupted gas supply operation can be achieved.

Description

A semi-automatic switching system for ASC

Technical field

The invention relates to the technical field of pressure reducing valves, in particular to an ASC semi-automatic switching system.

Background technique

With the rapid development of society and economy, more and more pressure reducing valves are used in pipelines. The pressure reducing valve reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to make the outlet pressure Automatically maintain a stable valve; from the point of view of fluid mechanics, the pressure reducing valve is a throttling element whose local resistance can be changed, that is, by changing the throttling area, the flow rate and the kinetic energy of the fluid are changed, resulting in different pressure losses, so as to achieve The purpose of pressure reduction; then rely on the adjustment of the control and adjustment system to balance the pressure fluctuations behind the valve with the spring force, so that the pressure behind the valve remains constant within a certain error range. The pressure reducing valve is used in the ASC switching system to pass The set pressure difference realizes the switching of the gas supply source, which is suitable for the laboratory gas supply system.

However, the existing air supply switching system requires electrical equipment to be controlled, and the safety of use is low, and the air supply is likely to be interrupted; therefore, it does not meet the existing demand. For this, we propose an ASC semi-automatic switching system.

Summary of the invention

The purpose of the present invention is to provide an ASC semi-automatic switching system to solve the problems that the existing air supply switching system proposed in the background art requires electrical equipment to control, has low safety in use, and is likely to cause air supply interruption.

In order to achieve the above objective, the present invention provides the following technical solutions: an ASC semi-automatic switching system, including a fixed connection bracket, the upper end surface of the fixed connection bracket is fixedly installed with a gas drainage mechanism, and one end of the gas drainage mechanism is fixedly mounted There is a fixed pressure valve mechanism, the other end of the gas drainage mechanism is fixedly installed with a pressure regulating valve mechanism, and the pressure regulating valve mechanism includes a second air guide valve body, a second connecting end cover, a steering connector, and a steering air guide Block, movable connecting block, return spring, guide rod and air guide hole, the inner side of the second air guide valve body is provided with an air guide hole, the upper end of the air guide hole is provided with a movable connecting block, and the upper part of the movable connecting block is fixed A guide rod is installed, the outer side of the guide rod is provided with a return spring, the movable connecting block and the second air guide valve body are connected by a return spring, and one side of the movable connecting block is slidably connected with a turning air guide block, so A steering connector is fixedly installed at the top of the steering air guide block, and a second connecting end cover is installed on the outside of the steering connector;

Both sides of the fixed pressure valve mechanism and the pressure regulating valve mechanism are connected with a high-pressure indicator through a thread, and the other side of the fixed pressure valve mechanism and the pressure regulating valve mechanism are both provided with an emptying valve, and the fixed connection A gas cylinder installation mechanism is installed on the lower end surface of the bracket.

Preferably, the fixed pressure valve mechanism includes a first air guide valve body, a first connecting end cover, a setting pressure adjusting head, a limit guide sleeve, a connecting rod, an air guide sliding sleeve and a support spring, and the first guide The inner side of the air valve body is slidably connected with an air guide sleeve, the inner side of the air guide sleeve is fixedly installed with a connecting rod, the outer side of the upper end of the connecting rod is slidably connected with a limit guide sleeve, and the bottom end of the limit guide sleeve It is connected with the connecting rod through a support spring, the upper end of the limit guide sleeve is equipped with a setting pressure adjusting head, and the outer side of the setting pressure adjusting head is installed with a first connecting end cover.

Preferably, the gas cylinder installation mechanism includes a steel cylinder, a locking clamping plate, a fixed support seat, a cylinder connection tube and an on-off valve, two steel cylinders are installed on the upper end surface of the fixed support seat, and the upper end surface of the steel cylinder is fixed. A locking clamping plate is installed, one end of the steel cylinder is provided with a bottle body connecting pipe, and one end of the bottle body connecting pipe is fixedly installed with an on-off valve.

Preferably, the gas drainage mechanism includes a transverse air duct body, a low air pressure indicator, a fixed connecting pipe, an outlet blocking valve body and a fixed valve block, and the upper end surface of the transverse air duct body is provided with a low air pressure indicator. A fixed connecting pipe is fixedly installed on one side of the transverse air duct body, a fixed valve block is fixedly installed on the inner side of one end of the fixed connecting pipe, and an outlet blocking valve body is fixedly installed on the inner side of the fixed valve block.

Preferably, the inner side of the second air guide valve body is provided with a guide hole, the upper end of the air guide hole is in a through connection with the bottom end of the guide hole, the steering air guide block is arranged on the inner side of the guide hole, and the steering connection The bottom end of the head is welded and fixed to the top of the steering air guide block.

Preferably, a limit chute is arranged on the inner side of the steering air guide block, the movable connection block is arranged on the inner side of the limit chute, the upper end of the movable connection block and the upper end of the guide rod are connected by a return spring, the The upper end of the return spring is welded and fixed on the outside of the top end of the guide rod.

Preferably, the bottom end of the connecting rod is welded and fixed to the inner side of the air guide sliding sleeve, the lower end surfaces of the connecting rod and the air guide sliding sleeve are both provided with exhaust holes, and the upper end of the connecting rod extends to the limit guide The inside of the bottom of the sleeve.

Preferably, the bottom end of the setting pressure adjusting head is screwed to the inner side of the first connecting end cover, and the first connecting end cover is fixed to the upper end surface of the first air guide valve body by a screw connection, and the second A connecting end cover is connected with the first air guide valve body through a sealing gasket.

Preferably, both ends of the locking clamp plate are fixed to the upper end surface of the fixed support base by screw connection, and the locking clamp plate and the fixed support base are both connected and fixed on the outside of the steel cylinder by rubber pads.

Preferably, the fixed valve block is welded and fixed on the inner side of the fixed connecting pipe, and a waist-shaped hole is provided on one side of the fixed valve block and the bottom end of the outlet blocking valve body.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention sets the pressure value of the fixed pressure valve mechanism before leaving the factory. Specifically, the height of the air guide sliding sleeve is determined according to the size of the set pressure value, and a low value input is performed on the pressure regulating valve mechanism. , This low value is less than the set pressure value of the fixed pressure valve mechanism, the steering connector drives the steering air guide block to rotate, and then the gas enters the inner side of the transverse air guide body when the steering air guide block is in the open state, and the outlet seal is opened at this time Block the valve body to perform continuous gas supply operation;

2. The present invention inputs a high value to the regulating pressure valve mechanism, the high value is greater than the set pressure value of the fixed pressure valve mechanism, by rotating the steering connector, and then the inner side of the transverse air guide tube body and the first air guide valve body The gas pressure difference on the inside becomes larger, so that the gas can push the gas guide sleeve to move up, and then realize the continuous gas supply operation of the steel cylinder connected with the fixed pressure valve mechanism. The overall operation is simple, safe to use, and can be used without interrupting the gas flow. In this case, the air supply is switched to achieve continuous air supply operation.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is a top view of the whole of the present invention;

Fig. 3 is a schematic diagram of a partial cross-sectional structure of the outlet blocking valve body of the present invention;

Figure 4 is a partial cross-sectional structure diagram of the fixed pressure valve mechanism of the present invention;

Figure 5 is a partial cross-sectional structure diagram of the pressure regulating valve mechanism of the present invention;

Fig. 6 is a schematic diagram of a partial cross-sectional structure of the diversion guide block of the present invention.

In the figure: 1. Fixed pressure valve mechanism; 101, first air guide valve body; 102, first connecting end cover; 103, setting pressure regulating head; 104, limit guide sleeve; 105, connecting rod; 106, guide Air sliding sleeve; 107, support spring; 2, pressure regulating valve mechanism; 201, second air guide valve body; 202, second connecting end cover; 203, steering connector; 204, steering air block; 205, movable connection Block; 206, return spring; 207, guide rod; 208, air guide hole; 3. fixed connection bracket; 4. gas cylinder installation mechanism; 401, steel cylinder; 402, locking card plate; 403, fixed support seat; 404, bottle Body connecting pipe; 405. On-off valve; 5. High pressure indicator; 6. Gas drainage mechanism; 601. Transverse air pipe body; 602. Low pressure indicator; 603. Fixed connecting pipe; 604. Outlet blocking valve body ; 605, fixed valve block; 7, drain valve.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

Please refer to Figures 1 to 6, an embodiment provided by the present invention: an ASC semi-automatic switching system, including a fixed connection bracket 3, the upper end surface of the fixed connection bracket 3 is fixedly installed with a gas drainage mechanism 6, the gas drainage mechanism One end of 6 is fixedly installed with a fixed pressure valve mechanism 1, and the other end of the gas discharge mechanism 6 is fixedly installed with a pressure regulating valve mechanism 2. The pressure regulating valve mechanism 2 includes a second air guide valve body 201, a second connecting end cover 202, The steering connector 203, the steering air guide block 204, the movable connection block 205, the return spring 206, the guide rod 207 and the air guide hole 208. The inner side of the second air guide valve body 201 is provided with an air guide hole 208, and the upper end of the air guide hole 208 is provided with The movable connecting block 205, a guide rod 207 is fixedly installed above the movable connecting block 205, and a return spring 206 is arranged on the outer side of the guide rod 207. The sliding of the block 205 can control the flow of gas, which is convenient to adjust the air pressure. One side of the movable connecting block 205 is connected with a turning air guide block 204. 201 controls the air flow, a steering connector 203 is fixedly installed at the top of the steering air guide block 204, and a second connecting end cover 202 is installed on the outside of the steering connector 203;

Both sides of the fixed pressure valve mechanism 1 and the pressure regulating valve mechanism 2 are connected with a high-pressure indicator 5 through threads, and the other side of the fixed pressure valve mechanism 1 and the pressure regulating valve mechanism 2 are both provided with an emptying valve 7 and fixedly connected. A gas cylinder installation mechanism 4 is installed on the lower end of the bracket 3, and the whole is controlled by mechanical switching, which is safe and reliable, reduces the number of inspections and repairs, and can realize uninterrupted gas supply operation.

Further, the fixed pressure valve mechanism 1 includes a first air guide valve body 101, a first connecting end cover 102, a setting pressure adjusting head 103, a limit guide sleeve 104, a connecting rod 105, an air guide sliding sleeve 106 and a support spring 107, The inner side of the first air guide valve body 101 is slidably connected with an air guide sleeve 106, the inner side of the air guide sleeve 106 is fixedly installed with a connecting rod 105, and the outer side of the upper end of the connecting rod 105 is slidably connected with the limit guide sleeve 104, the limit guide sleeve The bottom end of 104 and the connecting rod 105 are connected by a support spring 107, the upper end of the limit guide sleeve 104 is equipped with a setting pressure adjusting head 103, and the outside of the setting pressure adjusting head 103 is installed with a first connecting end cover 102, which is fixed by The pressure valve mechanism 1 sets a fixed value and can switch the gas when the gas is supplied.

Further, the gas cylinder installation mechanism 4 includes a steel cylinder 401, a locking clamping plate 402, a fixed support base 403, a cylinder connection tube 404 and an on-off valve 405. The upper end surface of the fixed support base 403 is mounted with two steel cylinders 401. The end surface is fixedly installed with a locking clamp plate 402, one end of the steel cylinder 401 is provided with a bottle body connecting tube 404, and one end of the bottle body connecting tube 404 is fixedly installed with an on-off valve 405. The gas cylinder installation mechanism 4 can supply air to the pipeline. , It is convenient to open and close the gas circulation.

Further, the gas drainage mechanism 6 includes a transverse air duct body 601, a low air pressure indicator 602, a fixed connecting pipe 603, an outlet blocking valve body 604, and a fixed valve block 605. The upper end surface of the transverse air duct body 601 is provided with a low air pressure indicator. In table 602, a fixed connecting pipe 603 is fixedly installed on one side of the transverse air duct body 601, a fixed valve block 605 is fixedly installed on the inner side of one end of the fixed connecting pipe 603, and an outlet blocking valve body 604 is installed on the inner side of the fixed valve block 605. The gas discharge mechanism 6 can monitor the pressure value of the outflowing gas in real time.

Further, the inner side of the second air guide valve body 201 is provided with a guide hole, the upper end of the air guide hole 208 is in a through connection with the bottom end of the guide hole, the steering air guide block 204 is provided on the inner side of the guide hole, and the bottom end of the steering connector 203 is welded It is fixed at the top of the deflecting air guide block 204 so that the gas can flow smoothly into the inner side of the second air guide valve body 201 after being guided through the air guide hole 208.

Further, a limit chute is provided on the inner side of the steering air guide block 204, and the movable connection block 205 is provided on the inner side of the limit chute. The upper end of the movable connection block 205 and the upper end of the guide rod 207 are connected by a return spring 206. The upper end is welded and fixed on the outer side of the top end of the guide rod 207, and the gas circulation can be controlled by the sliding of the movable connecting block 205, which is convenient for adjusting the air pressure.

Further, the bottom end of the connecting rod 105 is welded and fixed to the inner side of the air guide sleeve 106, the lower end surfaces of the connecting rod 105 and the air guide sleeve 106 are both provided with exhaust holes, and the upper end of the connecting rod 105 extends to the limit guide sleeve 104 The inner side of the bottom end is connected to one end of the emptying valve 7 through the exhaust hole, so that the gas inside the steel cylinder 401 can be discharged.

Further, the bottom end of the set pressure regulating head 103 is screwed to the inner side of the first connecting end cover 102, and the first connecting end cover 102 is fixed to the upper end surface of the first air guide valve body 101 by screw connection, and the first connecting end The cover 102 and the first air guide valve body 101 are connected by a sealing gasket, the overall sealing performance is good, and the structure is stable in use.

Further, both ends of the locking clip 402 are fixed on the upper end surface of the fixed support base 403 by screw connection, and the locking clip 402 and the fixed support base 403 are both connected and fixed on the outside of the steel cylinder 401 by rubber pads, and the switch valve 405 is used. It is possible to control the gas flow to the steel cylinder 401.

Further, the fixed valve block 605 is welded and fixed on the inner side of the fixed connecting pipe 603, one side of the fixed valve block 605 and the bottom end of the outlet blocking valve body 604 are both provided with waist-shaped holes, and the rotating outlet blocks the upper end of the valve body 604, The bottom end of the outlet blocking valve body 604 seals the fixed connecting pipe 603.

Working principle: When in use, check whether the functions of each part are intact, set the two emptying valves 7 to the long-closed state, so that the overall air flow can only be discharged from one end of the fixed connecting pipe 603, and on the side of the fixed valve block 605 The bottom end of the outlet blocking valve body 604 is provided with a waist-shaped hole, and the upper end of the rotating outlet blocking valve body 604 is rotated so that the bottom end of the outlet blocking valve body 604 seals the fixed connecting pipe 603, and the gas cylinder is installed correctly. The two ends of 4 are respectively connected to the fixed pressure valve mechanism 1 and the pressure regulating valve mechanism 2. The pressure value of the fixed pressure valve mechanism 1 is set before leaving the factory. Specifically, the bottom end of the connecting rod 105 is welded and fixed to the air guiding slide The inner side of the sleeve 106, the upper end of the connecting rod 105 extends to the inner side of the limiting guide sleeve 104, and the bottom end of the limiting guide sleeve 104 and the connecting rod 105 are connected by a support spring 107, and the pressure regulating head 103 is set to the first connecting end The cover 102 is connected by threads, so that the pressure adjustment head 103 is rotated to drive the limit guide sleeve 104 to adjust the height, and the support spring 107 is pushed to drive the connecting rod 105 and the air guide sleeve 106 to move downwards, according to the set pressure The value of the value then determines the height of the air guide sleeve 106, while operating the upper end of the steering connector 203, the bottom end of the steering connector 203 and the upper end of the steering air guide block 204 are welded and fixed to lower the pressure regulating valve mechanism 2. The low value is less than the set pressure value of the fixed pressure valve mechanism 1. Specifically, the steering connector 203 drives the steering air guide block 204 to rotate on the inner side of the second air guide valve body 201 with the guide hole. The air guide block 204 has a semi-cylindrical shape, so that when the two steel cylinders 401 supply air to the fixed pressure valve mechanism 1 and the pressure regulating valve mechanism 2, the air guide sleeve 106 is moved upward by the gas guided by the switch valve 405, and the spring is supported. 107 shrinks, and the limit guide sleeve 104 limits the movement stroke of the connecting rod 105, so that the gas cannot enter the inner side of the transverse air duct body 601 through the fixed pressure valve mechanism 1. At this time, the air guide hole 208 guides the gas, so that The gas pushes the bottom end of the movable connecting block 205 to separate from the upper end of the air guide hole 208, and then the gas enters the inner side of the transverse air duct body 601 when the air guide block 204 is in the open state. At this time, the outlet blocking valve body 604 can be opened. For continuous gas supply operation, when the cylinder 401 connected to the pressure regulating valve mechanism 2 is insufficiently supplied, a high value input is made to the pressure regulating valve mechanism 2, and this high value is greater than the set pressure value of the fixed pressure valve mechanism 1. By rotating the steering connector 203, the semi-cylindrical shape of the steering air guide block 204 can block the second air guide valve body 201, and then the gas pressure between the inner side of the lateral air guide tube body 601 and the inner side of the first air guide valve body 101 The difference becomes larger, so that the gas can push the air guide sleeve 106 to move up, so as to realize the continuous gas supply operation of the steel cylinder 401 connected with the fixed pressure valve mechanism 1. The overall operation is simple, safe to use, and can be used without interruption. For continuous gas supply operation under the condition of gas flow, the two high-pressure display meters 5 can respectively monitor the pressure values of the fixed pressure valve mechanism 1 and the pressure regulating valve mechanism 2 to ensure the safety of use.

For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended to fall within the claims. All changes within the meaning and scope of the equivalent elements of are included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

An ASC semi-automatic switching system, comprising a fixed connection bracket (3), characterized in that: the upper end surface of the fixed connection bracket (3) is fixedly installed with a gas drainage mechanism (6), the gas drainage mechanism (6) One end of the gas discharge mechanism (6) is fixedly installed with a fixed pressure valve mechanism (1), the other end of the gas discharge mechanism (6) is fixedly installed with a pressure regulating valve mechanism (2), and the pressure regulating valve mechanism (2) includes a second air guide The valve body (201), the second connecting end cover (202), the steering connector (203), the steering air guide block (204), the movable connecting block (205), the return spring (206), the guide rod (207) and the guide An air hole (208), an air hole (208) is provided on the inner side of the second air guide valve body (201), and an movable connection block (205) is provided on the upper end of the air guide valve body (208), and the movable connection block ( A guide rod (207) is fixedly installed above the guide rod (207), a return spring (206) is arranged on the outside of the guide rod (207), and the movable connection block (205) and the second air guide valve body (201) are reset A spring (206) is connected, one side of the movable connecting block (205) is slidably connected with a steering air guide block (204), and a steering connector (203) is fixedly installed at the top of the steering air guide block (204), so A second connecting end cover (202) is installed on the outside of the steering connector (203);

Both sides of the fixed pressure valve mechanism (1) and the pressure regulating valve mechanism (2) are connected with a high air pressure indicator (5) through threads, and the fixed pressure valve mechanism (1) and the pressure regulating valve mechanism (2) An emptying valve (7) is arranged on the other side of the fixed connection bracket (3), and a gas cylinder installation mechanism (4) is installed on the lower end surface of the fixed connection bracket (3).
The ASC semi-automatic switching system according to claim 1, characterized in that: the fixed pressure valve mechanism (1) comprises a first air guide valve body (101), a first connecting end cover (102), and a set pressure The adjusting head (103), the limit guide sleeve (104), the connecting rod (105), the air guide sliding sleeve (106) and the support spring (107), the inner side of the first air guide valve body (101) is slidably connected with An air guide sleeve (106), a connecting rod (105) is fixedly installed on the inner side of the air guide sleeve (106), and the outer side of the upper end of the connecting rod (105) is slidably connected to the limit guide sleeve (104), the The bottom end of the limit guide sleeve (104) and the connecting rod (105) are connected by a support spring (107), and the upper end of the limit guide sleeve (104) is equipped with a setting pressure adjusting head (103). A first connecting end cover (102) is installed on the outside of the pressure regulating head (103).
The ASC semi-automatic switching system according to claim 1, wherein the gas cylinder installation mechanism (4) comprises a steel cylinder (401), a locking card (402), a fixed support base (403), and a cylinder body Connect the pipe (404) and the switch valve (405), the upper end surface of the fixed support seat (403) is equipped with two steel cylinders (401), and the upper end surface of the steel cylinder (401) is fixedly installed with a locking clamp plate (402) ), one end of the steel cylinder (401) is provided with a bottle body connecting pipe (404), and one end of the bottle body connecting pipe (404) is fixedly installed with an on-off valve (405).
The ASC semi-automatic switching system according to claim 1, characterized in that: the gas drainage mechanism (6) comprises a transverse air duct body (601), a low air pressure indicator (602), and a fixed connecting pipe (603) , The outlet blocking valve body (604) and the fixed valve block (605), the upper end of the transverse air duct body (601) is provided with a low air pressure indicator (602), one of the transverse air duct body (601) A fixed connecting pipe (603) is fixedly installed on the side, a fixed valve block (605) is fixedly installed on the inner side of one end of the fixed connecting pipe (603), and an outlet blocking valve body ( 604).
The ASC semi-automatic switching system according to claim 1, characterized in that: the inner side of the second air guide valve body (201) is provided with a guide hole, the upper end of the air guide hole (208) and the bottom of the guide hole The ends are connected through each other, the steering air guide block (204) is arranged inside the guide hole, and the bottom end of the steering connector (203) is welded and fixed to the top end of the steering air guide block (204).
The ASC semi-automatic switching system according to claim 1, characterized in that: a limit chute is provided on the inner side of the steering air block (204), and the movable connecting block (205) is arranged on the inner side of the limit chute. On the inside, the upper end of the movable connecting block (205) and the upper end of the guide rod (207) are connected by a return spring (206), and the upper end of the return spring (206) is welded and fixed to the outside of the top end of the guide rod (207).
The ASC semi-automatic switching system according to claim 2, characterized in that: the bottom end of the connecting rod (105) is welded and fixed to the inner side of the air guide sleeve (106), and the connecting rod (105) and the guide The lower end surface of the air sliding sleeve (106) is provided with exhaust holes, and the upper end of the connecting rod (105) extends to the inner side of the bottom end of the limiting guide sleeve (104).
The ASC semi-automatic switching system according to claim 2, characterized in that: the bottom end of the setting pressure adjusting head (103) is screwed to the inner side of the first connecting end cover (102), and the first The connecting end cover (102) is fixed on the upper end surface of the first air guide valve body (101) by screw connection, and the first connecting end cover (102) is connected with the first air guide valve body (101) through a sealing gasket.
The ASC semi-automatic switching system according to claim 3, characterized in that: both ends of the locking card (402) are fixed on the upper end surface of the fixed support base (403) by screw connection, and the locking The clamping plate (402) and the fixed support seat (403) are both connected and fixed on the outside of the steel cylinder (401) through rubber pads.
The ASC semi-automatic switching system according to claim 4, wherein the fixed valve block (605) is welded and fixed on the inner side of the fixed connecting pipe (603), and one side of the fixed valve block (605) is connected to The bottom end of the outlet blocking valve body (604) is provided with waist-shaped holes.