CN215409066U

CN215409066U - Medical vacuum negative pressure machine with overvoltage protection device

Info

Publication number: CN215409066U
Application number: CN202121754559.5U
Authority: CN
Inventors: 张小晶
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-01-04
Anticipated expiration: 2031-07-30

Abstract

The utility model relates to the technical field of negative pressure machines, and discloses a medical vacuum negative pressure machine with an overvoltage protection device, which comprises a negative pressure cavity, an overvoltage protection mechanism arranged at the top of the negative pressure cavity, and a connecting mechanism arranged at one side of the negative pressure cavity, wherein the overvoltage protection mechanism comprises a glass tube, the glass tube is communicated with the inside of the negative pressure cavity, the connecting mechanism also comprises a piston sleeve which is connected in the glass tube in a sliding manner, when a vacuum pump works, the inside of the negative pressure cavity is in a negative pressure environment through a communicating tube, because the glass tube is communicated with the inside of the negative pressure cavity, the piston sleeve wrapping an iron piston block moves downwards in the glass tube when the negative pressure in the negative pressure cavity is negative, when the pressure in the negative pressure cavity is lower than a threshold value, the piston sleeve moves to the bottom of a limiting block, a second spiral lead is straightened, then the iron piston block falls off from the iron block, and an open circuit is formed between two connecting leads, the circuit of the vacuum pump is cut off, so that the danger of the negative pressure cavity caused by the over-low pressure in use is prevented.

Description

Medical vacuum negative pressure machine with overvoltage protection device

Technical Field

The utility model relates to the technical field of negative pressure machines, in particular to a medical vacuum negative pressure machine with an overvoltage protection device.

Background

The vacuum negative pressure machine, also called as a negative pressure vacuum pump, refers to a micro vacuum pump, which has an inlet and an outlet of a suction nozzle and an exhaust nozzle, and can continuously form vacuum or negative pressure (relative vacuum) at the inlet and form micro positive pressure at the exhaust nozzle.

The medical vacuum negative pressure machine has higher pressure requirement limit on the negative pressure machine due to different use environments, the pressure of the medical vacuum negative pressure machine is too low and is easy to generate danger due to the blockage of the air suction nozzle or the problem of a circuit in the use process, and the traditional air suction nozzle is too simple in connection mode, not tight enough in connection and easy to leak air, so that the internal pressure is influenced.

Aiming at the problems, the medical vacuum negative pressure machine with the overpressure protection device is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a medical vacuum negative pressure machine with an overpressure protection device, which is used for working, so that the problems that the pressure is too low and danger is easy to occur due to the blockage of an air suction nozzle or the problem of a circuit in the background, and the traditional air suction nozzle is too simple in connection mode, not tight in connection and easy to leak air are solved.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a take overvoltage protector's medical vacuum negative pressure machine, includes the negative pressure chamber and sets up the overvoltage protection mechanism at negative pressure chamber top, still includes the coupling mechanism who sets up in negative pressure chamber one side, overvoltage protection mechanism includes the glass pipe, and the glass pipe link up with negative pressure intracavity portion mutually, still includes sliding connection at the intraductal piston sleeve of glass, and the inside cladding of piston sleeve has the piston iron plate, and the sealed lid of top fixedly connected with of glass pipe, sealed inside first conducting block and the second conducting block of being provided with respectively of lid, the first spiral wire of fixedly connected with between first conducting block and the piston iron plate, the bottom fixedly connected with second spiral wire of second conducting block, and the outer fringe cladding in second spiral wire bottom has the magnetic path.

Further, the bottom of the negative pressure cavity is fixedly connected with a bottom plate, the top rear end of the bottom plate is fixedly connected with a vacuum pump, and the vacuum pump is fixedly connected with a communicating pipe with one side of the negative pressure cavity.

Furthermore, the piston sleeve is provided with a preset hole corresponding to the magnetic block, the first conductive block and the second conductive block are fixedly connected with connecting wires, and the other ends of the connecting wires are electrically connected with the vacuum pump.

Furthermore, the surface of glass pipe is provided with the scale mark, and one side of glass pipe is provided with spacing subassembly, and spacing subassembly includes the casing to and the stopper of sliding connection in the casing inside, be provided with the recess corresponding with the stopper on the glass pipe.

Furthermore, a spring is fixedly connected between the outer side of the limiting block and the inner wall of the shell, a pull rod is connected to the other side of the shell in a sliding mode, and the pull rod penetrates through the inside of the shell and is fixedly connected with the limiting block.

Further, coupling mechanism is including setting up the gas outlet at negative pressure chamber opposite side, and the edge outside evenly distributed of gas outlet has the spacing groove, and coupling mechanism still includes the first lantern ring of threaded connection on the gas outlet surface, and the inside of first lantern ring is provided with rotates the groove.

Further, the inside rotation of rotation inslot is connected with the change, fixedly connected with second lantern ring on the inner wall of change, and the outer wall sliding connection of second lantern ring and gas outlet, the other end fixedly connected with sealing member of the second lantern ring, the other end fixedly connected with exhaust tube of sealing member.

Furthermore, the position of the sealing element close to one side of the second sleeve ring is evenly distributed with a limiting column, and the upper part of the sealing element is fixedly connected with a sealing ring corresponding to the inner wall of the air outlet.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the medical vacuum negative pressure machine with the overvoltage protection device, when a vacuum pump works, the interior of a negative pressure cavity is in a negative pressure environment through the communication pipe, the glass pipe is communicated with the interior of the negative pressure cavity, when the interior of the negative pressure cavity is in negative pressure, the piston sleeve wrapping the piston iron block moves downwards inside the glass pipe, when the pressure of the interior of the negative pressure cavity is lower than a threshold value, the piston sleeve moves to the bottom of the limiting block, the second spiral lead is straightened, then the magnetic block falls off from the piston iron block, at the moment, an open circuit is formed between the two connecting leads, the vacuum pump circuit is cut off, the danger caused by the fact that the interior of the negative pressure cavity is too low in use is prevented, when the pressure of the interior of the negative pressure cavity is recovered, the piston sleeve retracts and is blocked by the limiting block, the overvoltage automatic cut-off circuit is realized, and the safety is improved.

2. According to the medical vacuum negative pressure machine with the overvoltage protection device, the limit column on the sealing element is aligned to the limit groove, the sealing ring extends into the inner wall of the air outlet, then the first sleeve ring is in threaded connection with the surface of the air outlet, so that the exhaust tube is fixed, as the rotating groove corresponding to the rotating ring is formed in the first sleeve ring, when the first sleeve ring is screwed down, friction cannot be generated between the air outlet and the sealing element, and the sealing performance is better under the action of the sealing element and the sealing ring.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the overvoltage protection mechanism structure of the present invention;

FIG. 3 is an exploded view of the stop assembly structure of the present invention;

fig. 4 is an exploded view of the connection mechanism structure of the present invention.

In the figure: 1. a negative pressure chamber; 11. a base plate; 12. a vacuum pump; 121. a communicating pipe; 2. an overvoltage protection mechanism; 21. a glass tube; 211. scale lines; 212. a groove; 22. a sealing cover; 221. a first conductive block; 222. a second conductive block; 223. a first spiral wire; 224. a second spiral wire; 225. a magnetic block; 226. connecting a lead; 23. a piston sleeve; 231. a piston iron block; 232. presetting holes; 24. a limiting component; 241. a housing; 242. a limiting block; 243. a spring; 244. a pull rod; 3. a connecting mechanism; 31. an air outlet; 311. a limiting groove; 32. a seal member; 321. a limiting column; 322. a seal ring; 323. an air exhaust pipe; 33. a first collar; 331. a rotating groove; 34. a second collar; 341. and (7) rotating the ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, a medical vacuum negative pressure machine with an overvoltage protection device includes a negative pressure chamber 1, an overvoltage protection mechanism 2 disposed at the top of the negative pressure chamber 1, and a connection mechanism 3 disposed at one side of the negative pressure chamber 1, the overvoltage protection mechanism 2 includes a glass tube 21, the glass tube 21 is communicated with the inside of the negative pressure chamber 1, the medical vacuum negative pressure machine further includes a piston sleeve 23 slidably connected in the glass tube 21, the piston sleeve 23 is wrapped with a piston iron block 231, the top of the glass tube 21 is fixedly connected with a sealing cover 22, the sealing cover 22 is internally provided with a first conductive block 221 and a second conductive block 222, the first conductive block 221 and the piston iron block 231 are fixedly connected with a first spiral wire 223, the bottom of the second conductive block 222 is fixedly connected with a second spiral wire 224, and the outer edge of the bottom of the second spiral wire 224 is wrapped with a magnetic block 225.

Referring to fig. 2-3, a bottom plate 11 is fixedly connected to the bottom of the negative pressure chamber 1, a vacuum pump 12 is fixedly connected to the rear end of the top of the bottom plate 11, and a communicating pipe 121 is fixedly connected to one side of the vacuum pump 12 and the negative pressure chamber 1, a pre-set hole 232 corresponding to the magnetic block 225 is arranged on the piston sleeve 23, a connecting wire 226 is fixedly connected to both the first conductive block 221 and the second conductive block 222, and the other end of the connecting wire 226 is electrically connected to the vacuum pump 12, the surface of the glass tube 21 is provided with scale marks 211, one side of the glass tube 21 is provided with a limiting component 24, the limiting component 24 comprises a housing 241, and a limiting block 242 slidably connected inside the housing 241, a groove 212 corresponding to the limiting block 242 is provided on the glass tube 21, a spring 243 is fixedly connected between the outer side of the limiting block 242 and the inner wall of the housing 241, a pull rod 244 is slidably connected to the other side of the housing 241, and the pull rod 244 penetrates through the inside of the housing 241 and is fixedly connected with the limiting block 242.

Referring to fig. 4, the connection mechanism 3 includes an air outlet 31 disposed at the other side of the negative pressure chamber 1, limit grooves 311 are uniformly distributed on the outer side of the edge of the air outlet 31, the connection mechanism 3 further includes a first sleeve ring 33 screwed on the surface of the air outlet 31, a rotation groove 331 is disposed inside the first sleeve ring 33, a rotation ring 341 is rotatably connected inside the rotation groove 331, a second sleeve ring 34 is fixedly connected on the inner wall of the rotation ring 341, the second sleeve ring 34 is slidably connected with the outer wall of the air outlet 31, the other end of the second sleeve ring 34 is fixedly connected with a sealing member 32, the other end of the sealing member 32 is fixedly connected with an exhaust tube 323, limit posts 321 are uniformly distributed at a position of the sealing member 32 close to one side of the second sleeve ring 34, and a sealing ring 322 corresponding to the inner wall of the air outlet 31 is fixedly connected with the sealing member 32.

The working principle is as follows: when the vacuum pump 12 works, the inside of the negative pressure cavity 1 is in a negative pressure environment through the communicating pipe 121, because the glass tube 21 is communicated with the inside of the negative pressure cavity 1, when the inside of the negative pressure cavity 1 is in a negative pressure, the piston sleeve 23 wrapping the piston iron block 231 moves downwards in the glass tube 21, when the inside pressure of the negative pressure cavity 1 is lower than a threshold value, the piston sleeve 23 moves to the bottom of the limit block 242, the second spiral conducting wire 224 is straightened, then the magnetic block 225 falls off from the piston iron block 231, at the moment, an open circuit is formed between the two connecting conducting wires 226, the circuit of the vacuum pump 12 is cut off, the danger caused by the overlow inside pressure of the negative pressure cavity 1 in use is prevented, when the inside pressure of the negative pressure cavity 1 is recovered, the piston sleeve 23 retracts and is blocked by the limit block 242, the overpressure automatic cut-off circuit is realized, the limit column 321 on the sealing element 32 is aligned with the limit groove 311, and the sealing ring 322 extends into the inner wall of the air outlet 31, then the first ring 33 is screwed on the surface of the air outlet 31 to fix the air suction pipe 323, and because the rotating groove 331 corresponding to the rotating ring 341 is arranged in the first ring 33, when the first ring 33 is screwed, no friction is generated between the air outlet 31 and the sealing element 32, and the sealing performance is better under the action of the sealing element 32 and the sealing ring 322.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take medical vacuum negative pressure machine of overvoltage protector, includes negative pressure chamber (1) and sets up overvoltage protection mechanism (2) at negative pressure chamber (1) top, still including setting up coupling mechanism (3) in negative pressure chamber (1) one side, its characterized in that: overvoltage protection mechanism (2) includes glass pipe (21), and glass pipe (21) link up with negative pressure chamber (1) inside mutually, still include piston cover (23) of sliding connection in glass pipe (21), the inside cladding of piston cover (23) has piston iron plate (231), the sealed lid (22) of top fixedly connected with of glass pipe (21), sealed lid (22) inside is provided with first conducting block (221) and second conducting block (222) respectively, first spiral wire (223) of fixedly connected with between first conducting block (221) and piston iron plate (231), the bottom fixedly connected with second spiral wire (224) of second conducting block (222), and the cladding of second spiral wire (224) bottom outer fringe has magnetic path (225).

2. The medical vacuum negative pressure machine with the overpressure protection device as claimed in claim 1, wherein: the bottom fixedly connected with bottom plate (11) in negative pressure chamber (1), the top rear end fixedly connected with vacuum pump (12) of bottom plate (11), and one side fixedly connected with communicating pipe (121) of vacuum pump (12) and negative pressure chamber (1).

3. The medical vacuum negative pressure machine with the overpressure protection device as claimed in claim 2, characterized in that: the piston sleeve (23) is provided with a preset hole (232) corresponding to the magnetic block (225), the first conductive block (221) and the second conductive block (222) are fixedly connected with connecting wires (226), and the other ends of the connecting wires (226) are electrically connected with the vacuum pump (12).

4. The medical vacuum negative pressure machine with the overpressure protection device as claimed in claim 1, wherein: the glass tube (21) is provided with scale marks (211) on the surface, one side of the glass tube (21) is provided with a limiting component (24), the limiting component (24) comprises a shell (241) and a limiting block (242) which is connected to the inside of the shell (241) in a sliding mode, and a groove (212) corresponding to the limiting block (242) is formed in the glass tube (21).

5. The medical vacuum negative pressure machine with the overpressure protection device as claimed in claim 4, wherein: and a spring (243) is fixedly connected between the outer side of the limiting block (242) and the inner wall of the shell (241), a pull rod (244) is connected to the other side of the shell (241) in a sliding manner, and the pull rod (244) penetrates through the inside of the shell (241) and is fixedly connected with the limiting block (242).

6. The medical vacuum negative pressure machine with the overpressure protection device as claimed in claim 1, wherein: the connecting mechanism (3) comprises an air outlet (31) arranged on the other side of the negative pressure cavity (1), limiting grooves (311) are uniformly distributed on the outer side of the edge of the air outlet (31), the connecting mechanism (3) further comprises a first sleeve ring (33) which is in threaded connection with the surface of the air outlet (31), and a rotating groove (331) is formed in the first sleeve ring (33).

7. The medical vacuum negative pressure machine with the overpressure protection device as claimed in claim 6, wherein: the inner portion of the rotating groove (331) is rotatably connected with a rotating ring (341), the inner wall of the rotating ring (341) is fixedly connected with a second sleeve ring (34), the second sleeve ring (34) is connected with the outer wall of the air outlet (31) in a sliding mode, the other end of the second sleeve ring (34) is fixedly connected with a sealing element (32), and the other end of the sealing element (32) is fixedly connected with an air exhaust pipe (323).

8. The medical vacuum negative pressure machine with the overpressure protection device as claimed in claim 7, wherein: the position of the sealing element (32) close to one side of the second sleeve ring (34) is evenly distributed with limiting columns (321), and the upper part of the sealing element (32) is fixedly connected with a sealing ring (322) corresponding to the inner wall of the air outlet (31).