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CN-224220519-U - Switch mechanism and passive box

CN224220519UCN 224220519 UCN224220519 UCN 224220519UCN-224220519-U

Abstract

The utility model relates to the technical field of injectors, in particular to a switch mechanism and a passive box, which comprise a pneumatic valve, a control assembly and a valve core, wherein the pneumatic valve comprises a first air inlet for a first air source to enter, a second air inlet for a second air source to enter and a first air outlet, the control assembly comprises a first channel for the second air source to circulate, and the valve core is movably arranged in the first channel and can block the first channel. The air source is divided into a first air source and a second air source after being depressurized through the depressurization valve, wherein the first air source is directly connected with the pneumatic valve, the second air source enters the pneumatic valve after being connected with the control assembly, and the on-off of the second air source can be controlled through the control assembly, so that the on-off of the pneumatic valve is controlled.

Inventors

  • SHA YINGYING
  • SONG HAI
  • YAN DIHENG
  • XUE YUE
  • YE SHU

Assignees

  • 江苏乐聚医药科技有限公司

Dates

Publication Date
20260512
Application Date
20250414

Claims (10)

  1. 1. A switch mechanism is characterized by comprising, A pneumatic valve (100) comprising a first air inlet (101) for a first air source, a second air inlet (102) for a second air source and a first air outlet (103), and A control assembly (200) comprising a first channel (S1) for the second air source to circulate and a valve core (201) movably arranged in the first channel (S1); the valve element (201) can block the first channel (S1).
  2. 2. The switch mechanism as claimed in claim 1, wherein the first air inlet (101) is connected to a first conduit (104) through which a first air source flows.
  3. 3. The switch mechanism as claimed in claim 2, wherein the second air inlet (102) is connected to a second conduit (105) through which a second air source flows.
  4. 4. A switching mechanism according to claim 3, wherein the first pipe (104) and the second pipe (105) are connected at their ends.
  5. 5. The switch mechanism according to any one of claims 1 to 4, wherein the control assembly (200) comprises a mounting tube (202), and the first channel (S1) is arranged inside the mounting tube (202); The valve core (201) is rotatably arranged in the mounting pipe (202) through a mounting shaft (203), and a first spring (204) is arranged between the valve core (201) and the mounting pipe (202); The mounting shaft (203) penetrates out of the mounting tube (202), and a handle (205) is arranged at the end part; The valve core (201) is disc-shaped, and the side edge of the valve core is in sealing fit with the inner wall of the mounting tube (202).
  6. 6. The switching mechanism according to claim 2 or 3, wherein the control assembly (200) comprises a mounting block (206), a first channel (S1) and a second channel (S2) are arranged in the mounting block (206), and the first channel (S1) and the second channel (S2) are arranged in a crossing manner; the valve core (201) is cylindrical and is arranged in the second channel (S2) in a sliding manner, and a through hole (201 a) is formed in the valve core (201); The length of the valve core (201) is larger than the width of the first channel (S1), and the outer wall of the valve core (201) and the inner wall of the second channel (S2) are arranged in a sealing mode; the control assembly (200) further includes a control member (207) disposed on the spool (201).
  7. 7. The switch mechanism as set forth in claim 6, characterized in that the control member (207) includes a pressing shaft (207 a) provided at one end of the spool (201), an elastic member (207 b) provided between the spool (201) and the second passage (S2); the end of the pressing shaft (207 a) passes through the second channel (S2).
  8. 8. The switch mechanism as claimed in claim 6, wherein the bottom of the mounting block (206) is provided with an elongated base plate (206 a); The control piece (207) comprises a pressing shaft (207 a) arranged at one end of the valve core (201), the pressing shaft (207 a) penetrates out of the second channel (S2), and a pressing plate (207 c) is arranged at the end part of the pressing shaft; An elastic member (207 b) is provided between the pressing plate (207 c) and the bottom plate (206 a).
  9. 9. A passive box, characterized in that the box comprises the switch mechanism as claimed in claim 8, and further comprises; a case (300); The pressure reducing valve (400) is arranged in the box body (300) and comprises a second air outlet (402) and a third air inlet (401) connected with a total air source; The pneumatic valve (100) is located inside the box body (300), and the first pipeline (104) and the second pipeline (105) can be connected with the second air outlet (402).
  10. 10. The passive box according to claim 9, characterized in that a four-way valve (403) is connected to the second air outlet (402), and the first pipe (104) and the second pipe (105) are connected to the four-way valve (403); a barometer (500) is arranged in the box body (300); the barometer (500) is connected with the four-way valve (403) through a third pipeline (501).

Description

Switch mechanism and passive box Technical Field The utility model relates to the technical field of syringes, in particular to a switching mechanism and a passive box. Background Needleless injectors, also known as pulse administration injectors, are commonly used for large-scale vaccination and for some veterinary applications, and can be gas-driven to generate a large pressure, which is suitable for rapid and efficient injection of drugs, and when the existing gas is supplied, the gas is often required to be turned on and off, and a large number of electronic devices, such as solenoid valves and power supply systems, are required for the current on and off, and such devices are required to be tested for electrical safety and electromagnetic compatibility. Disclosure of utility model The present utility model has been made in view of the above-described problems with the conventional switching mechanism and passive box. Therefore, one of the purposes of the utility model is to provide a switch mechanism, which aims to provide a switch for switching on and off an air path. In order to solve the technical problems, the utility model provides a switch mechanism which comprises, A pneumatic valve comprising a first air inlet for the first air source, a second air inlet for the second air source and a first air outlet, and The control assembly comprises a first channel for the second air source to circulate and a valve core movably arranged in the first channel; the valve core can isolate the first channel. As a preferable scheme of the switch mechanism, the first air inlet is connected with a first pipeline for circulating a first air source. As a preferable scheme of the switch mechanism, the second air inlet is connected with a second pipeline for circulating a second air source. As a preferred embodiment of the switching mechanism according to the present utility model, the first pipe is connected to the second pipe at an end thereof. As a preferable scheme of the switch mechanism, the control assembly comprises a mounting tube, wherein the first channel is arranged inside the mounting tube; The valve core is rotatably arranged in the mounting tube through a mounting shaft, and a first spring is arranged between the valve core and the mounting tube; the mounting shaft penetrates out of the mounting pipe, and a handle is arranged at the end part of the mounting shaft; The valve core is disc-shaped, and the side edge of the valve core is in sealing fit with the inner wall of the mounting pipe. The control assembly comprises a mounting block, wherein a first channel and a second channel are arranged in the mounting block, and the first channel and the second channel are arranged in a crossing manner; the valve core is cylindrical and is arranged in the second channel in a sliding manner, and a through hole is formed in the valve core; The length of the valve core is greater than the width of the first channel, and the outer wall of the valve core and the inner wall of the second channel are arranged in a sealing mode. The control piece comprises a pressing shaft arranged at one end of the valve core and an elastic piece arranged between the valve core and the second channel; The pressing shaft end portion penetrates out of the second channel. As a preferable scheme of the switch mechanism, the bottom of the mounting block is provided with an extended bottom plate; The control piece comprises a pressing shaft arranged at one end of the valve core, the pressing shaft penetrates out of the second channel, and a pressing plate is arranged at the end part of the pressing shaft; an elastic piece is arranged between the pressing plate and the bottom plate. The switch mechanism has the beneficial effects that the first air source can be discharged from the first air outlet after entering the pneumatic valve, the work of the pneumatic valve can be controlled through the control assembly, the second air source penetrates through the control assembly to enter the pneumatic valve, the pneumatic valve can be opened at the moment, and the first air source can be smoothly discharged. Another object of the utility model is to provide a passive box, which aims to provide a switch for switching on and off the air path. In order to solve the technical problems, the utility model provides a passive box which comprises the switch mechanism and also comprises a switch mechanism; A case body; The pressure reducing valve is arranged in the box body and comprises a third air inlet, which is connected with a total air source, of the second air outlet; The pneumatic valve is located inside the box body, and the first pipeline and the second pipeline can be connected with the second air outlet. As a preferable scheme of the passive box, the second air outlet is connected with a four-way valve, and the first air source and the second air source are connected with the four-way valve; a barometer is arranged in the box body; the barometer