CN213249070U

CN213249070U - Disposable bacterial filter

Info

Publication number: CN213249070U
Application number: CN202021653506.XU
Authority: CN
Inventors: 王伟; 李清
Original assignee: Third Affiliated Hospital Sun Yat Sen University
Current assignee: Third Affiliated Hospital Sun Yat Sen University
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-05-25
Anticipated expiration: 2030-08-10

Abstract

The utility model relates to a disposable bacterial filter belongs to medical auxiliary instrument's technical field. The air filter comprises an upper shell and a lower shell, wherein the bottom of the upper shell is sleeved in the lower shell, the upper shell extends upwards to form an air blowing pipe, the lower shell extends downwards to form a connecting pipe, and the inner wall of the upper shell is also fixedly connected with an air filter screen; the fixing device comprises an upper buckle arranged at the bottom end of the upper shell in an embedded mode and a lower buckle arranged at the top end of the lower shell in an embedded mode. The utility model provides a disposable bacterial filter of prior art exist cause extravagant scheduling problem easily.

Description

Disposable bacterial filter

Technical Field

The utility model relates to a disposable bacterial filter belongs to medical auxiliary instrument's technical field.

Background

In the pulmonary function inspection, need use the bacterial filter, the bacterial filter can protect check-out set, can prevent the cross infection between the patient simultaneously again, and current bacterial filter generally divide into repetitious usage type and disposable type, and current disposable type bacterial filter causes great waste easily, has increased use cost, and current repetitious usage type bacterial filter causes cross infection again easily, also reduces equipment life easily.

Prior art application number is CN 201822195528.5's patent document discloses a bacterial filter that pulmonary function inspection used, including last takeover and lower takeover, the below center department of going up the takeover is equipped with down the takeover, and goes up takeover and lower shell of shell and lower shell on the relative one side surface difference fixedly connected with of takeover, the bottom surface of going up the shell is close to the edge butt fusion and has sub-buckle, and the top surface of shell is close to the fixedly connected with outer loop of edge down, the inside center department of outer loop is equipped with the inner ring, and the inner ring inside center department fixed mounting has the filter layer, the peripheral surface of going up the takeover is kept away from last shell department and has been offered the ring channel.

The patent document with the prior art application number of CN201320029583.1 also discloses a lung function bacteria filter, which comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are butted to form a sealed cavity, a filter medium is arranged in the sealed cavity, an upper connector is arranged on the upper shell, a lower connector is arranged on the lower shell, the upper connector extends upwards to form a mouthpiece, the end part of the mouthpiece is an air blowing opening, and a mouthpiece part anti-falling structure is arranged on the air blowing opening. Preferably, the mouth part falling-off prevention structure is an outward flange which can effectively prevent the mouth part from falling off.

Above-mentioned reference example and prior art's disposable bacterial filter exist and cause extravagant scheduling problem easily, consequently, the utility model provides a disposable bacterial filter is used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of easy waste and the like of the existing disposable bacterial filter, the utility model relates to a disposable bacterial filter.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a disposable bacteria filter comprises an upper shell and a lower shell, wherein the bottom of the upper shell is sleeved in the lower shell, the upper shell extends upwards to form an air blowing pipe, the lower shell extends downwards to form a connecting pipe, and the inner wall of the upper shell is fixedly connected with an air filter screen; also comprises at least two fixing devices for locking the upper shell and the lower shell, the fixing devices comprise an upper buckle embedded at the bottom end of the upper shell and a lower buckle embedded at the top end of the lower shell, the upper buckle and the lower buckle respectively comprise a semi-cylindrical block, a protruding tooth and a tooth groove, the shapes of the protruding tooth and the tooth groove are matched, one side of the convex tooth, which is close to the tooth socket, is provided with a semi-cylindrical groove, a semi-cylindrical block is arranged in the semi-cylindrical groove, the arc surface of the semi-cylindrical block is attached to the arc surface of the semi-cylindrical groove, the arc surface of the semi-cylindrical groove is provided with a notch, the rotating rod of the upper buckle passes through the notch to be fixedly connected with the semi-cylindrical block, the rotating rod is connected with the upper shell through a spring, the lower shell is provided with a rod groove, one end of the poke rod of the lower buckle passes through the rod groove and the gap, and the poke rod body is fixedly connected with the lower shell through a spring.

The connecting surface of the lower shell is also provided with an elastic rubber gasket, and the elastic rubber gasket is arranged on one side of the lower buckle close to the circle center of the lower buckle.

The circle centers of the semi-cylindrical blocks are respectively hinged with the upper shell and the lower shell.

The elastic rubber gasket is higher than the connecting surface of the lower shell so as to achieve the sealing effect.

The fixing devices are uniformly distributed.

The rotating rod is arranged in the upper buckle; the poke rod does not penetrate through the end and extends out of the lower shell.

Compared with the prior art the utility model discloses there are following characteristics and beneficial effect: the upper shell of the utility model is integrally formed, so that the upper shell can be directly recycled in a unified way after being used, and the lower shell can be repeatedly used, thereby greatly reducing the waste; the upper shell of the utility model is provided with the air filter screen which can filter bacteria and prevent cross infection among patients, and the air filter screen is arranged on the inner wall of the upper shell and is not directly contacted with the lower shell, thereby avoiding the lower shell from being polluted and reducing the workload of disinfection work; the utility model discloses a fixing device can push down elastic rubber gasket with last casing and lower casing locking, goes up the casing, has prevented gas leakage.

Drawings

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

FIG. 2 is a front view of the utility model;

FIG. 3 is a front view of the utility model in full section after separation;

fig. 4 is an enlarged view of a portion of fig. 2 according to the present invention;

fig. 5 is a partially enlarged view of B in fig. 3 according to the present invention.

Wherein the reference numerals are: 10. an upper housing; 11. an air blowing pipe; 12. an air filter screen; 20. a lower housing; 21. a connecting pipe; 22. an elastic rubber gasket; 23. a rod groove; 30. a fixing device; 31. an upper buckle; 311. rotating the rod; 32. a lower buckle; 321. a poke rod; 33. a semi-cylindrical block; 34. protruding teeth; 35. a tooth socket; 36. a semi-cylindrical groove; 361. a notch; 37. a spring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-5, the disposable bacterial filter of the present embodiment comprises an upper housing 10 and a lower housing 20, wherein the bottom of the upper housing 10 is sleeved in the lower housing 20, the upper housing 10 extends upward to form an air blowing pipe 11, the lower housing 20 extends downward to form a connecting pipe 21, and the inner wall of the upper housing 10 is further fixedly connected with an air filtering net 12; the fixing device 30 comprises an upper buckle 31 embedded at the bottom end of the upper shell 10 and a lower buckle 32 embedded at the top end of the lower shell 20, the upper buckle 31 and the lower buckle 32 both comprise a semi-cylindrical block 33, a protruding tooth 34 and a tooth space 35, the shapes of the protruding tooth 34 and the tooth space 35 are matched, one side, close to the tooth space 35, of the protruding tooth 34 is provided with a semi-cylindrical groove 36, the semi-cylindrical block 33 is arranged in the semi-cylindrical groove 36, the arc surface of the semi-cylindrical block 33 is attached to the arc surface of the semi-cylindrical groove 36, the arc surface of the semi-cylindrical groove 36 is provided with a notch 361, a rotating rod 311 of the upper buckle 31 penetrates through the notch 361 and is fixedly connected with the semi-cylindrical block 33, the rotating rod 311 is fixedly connected with the upper shell 10 through a spring 37, the lower shell 20 is provided with a rod groove 23, one end of a poke rod 321 of the lower buckle 32 penetrates through the rod groove 23 and the notch 361 and is fixedly connected with the semi-, the tap lever 321 is connected to the lower case 20 through a spring 37.

Further, the connection surface of the lower housing 20 is further provided with an elastic rubber gasket 22, and the elastic rubber gasket 22 is arranged on one side of the lower buckle 32 close to the center of the lower buckle 32.

Further, the circle centers of the semi-cylindrical blocks 33 are hinged with the upper shell 10 and the lower shell 20 respectively.

Further, the elastic rubber gasket 22 is higher than the joint surface of the lower case 20 to achieve a sealing effect.

Further, the fixing means 30 are evenly distributed.

Further, the rotating rod 311 is arranged in the upper buckle 31; the tap lever 321 does not extend through the end to the outside of the lower case 20.

The utility model discloses a theory of operation: firstly, the upper shell 10 is sleeved into the lower shell 20, the protruding tooth 34 of the upper buckle 31 on the upper shell 10 is clamped into the tooth groove 35 of the lower buckle 32 on the lower shell 20, when the upper buckle is clamped, the plane of the semi-cylindrical block 33 of the upper buckle 31 is rotated around the hinged point of the protruding tooth 34 of the lower buckle 32 due to the fact that the plane of the semi-cylindrical block 33 of the upper buckle 31 is pressed against the protruding tooth 34 of the lower buckle 32, the rotating rod 311 is driven to rotate by the rotation of the semi-cylindrical block 33 of the upper buckle 31, the rotating rod 311 rotates to enable the spring 37 to be elongated until the protruding tooth 34 of the upper buckle 31 completely enters the tooth groove 35 of the lower buckle 32, at this time, the rotating rod 311 drives the semi-cylindrical block 33 of the upper buckle 31 to return under the action of the spring, the plane of the semi-cylindrical block 33 of the upper buckle 31 is attached to the plane of the semi-cylindrical block 33 of the lower buckle;

when the locking is released, the poke rod 321 of the lower buckle 32 is rotated, the poke rod 321 drives the upper buckle 31 and the semi-cylindrical block 33 of the lower buckle 32 to rotate together until the plane of the semi-cylindrical block 33 is in a vertical state, the locking is released at the moment, and the upper shell 10 can move upwards and move away.

It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. A single-use bacterial filter, characterized by: the air purifier comprises an upper shell (10) and a lower shell (20), wherein the bottom of the upper shell (10) is sleeved in the lower shell (20), the upper shell (10) extends upwards to form an air blowing pipe (11), the lower shell (20) extends downwards to form a connecting pipe (21), and an air filter screen (12) is fixedly connected to the inner wall of the upper shell (10);

the locking device comprises an upper shell (10) and a lower shell (20), and further comprises at least two fixing devices (30) used for locking the upper shell (10) and the lower shell (20), wherein each fixing device (30) comprises an upper buckle (31) embedded into the bottom end of the upper shell (10) and a lower buckle (32) embedded into the top end of the lower shell (20), each upper buckle (31) and each lower buckle (32) respectively comprise a semi-cylindrical block (33), a protruding tooth (34) and a tooth groove (35), the shapes of the protruding tooth (34) and the tooth groove (35) are matched, one side, close to the tooth groove (35), of the protruding tooth (34) is provided with a semi-cylindrical groove (36), the semi-cylindrical block (33) is arranged in the groove of the semi-cylindrical groove (36), the arc surface of the semi-cylindrical block (33) is attached to the arc surface of the semi-cylindrical groove (36), a notch (361) is arranged on the arc surface of the semi-cylindrical groove (36), and the notch (311) of the upper buckle (31) penetrates, dwang (311) is again through spring (37) and last casing (10), casing (20) are opened down has pole groove (23), and pole groove (23) and breach (361) are passed to poker rod (321) one end of lower buckle (32), with semicylindrical piece (33) fixed connection of lower buckle (32), poker rod (321) pole body passes through spring (37) and is connected with casing (20) down.

2. A single-use bacterial filter according to claim 1, characterized in that: the connecting surface of the lower shell (20) is further provided with an elastic rubber gasket (22), and the elastic rubber gasket (22) is arranged on one side, close to the circle center of the lower buckle (32), of the lower buckle (32).

3. A single-use bacterial filter according to claim 1, characterized in that: the circle center of the semi-cylindrical block (33) is hinged with the upper shell (10) and the lower shell (20) respectively.

4. A single-use bacterial filter according to claim 2, characterized in that: the elastic rubber gasket (22) is higher than the connecting surface of the lower shell (20) so as to achieve the sealing effect.

5. A single-use bacterial filter according to claim 1, characterized in that: the fixing devices (30) are evenly distributed.

6. A single-use bacterial filter according to claim 1, characterized in that: the rotating rod (311) is arranged in the upper buckle (31); the poke rod (321) does not extend out of the lower shell (20) through the end.