CN210218802U

CN210218802U - One-way exhaust valve

Info

Publication number: CN210218802U
Application number: CN201920999348.4U
Authority: CN
Inventors: Liquan Zang; 臧丽泉; Jiasheng Liu; 刘家胜
Original assignee: China Metallurgical Construction Engineering Group Co Ltd
Current assignee: China Metallurgical Construction Engineering Group Co Ltd
Priority date: 2019-06-30
Filing date: 2019-06-30
Publication date: 2020-03-31
Anticipated expiration: 2029-06-30

Abstract

The utility model discloses an one-way exhaust valve, including the inflator, the open end of inflator is connected with end cover, the air inlet has been seted up at the bottom of the section of thick bamboo of inflator, the inner tube of interior bottom fixedly connected with and air inlet intercommunication of inflator, the one end sealing connection that the air inlet was kept away from to the inner tube has the end cover of holding one's breath, set up a plurality ofly on the body of inner tube and the venthole of inner tube hole intercommunication, the position that just is located between end cover of holding one's breath and the end cover in the inflator is provided with the piston piece, the air vent has been seted up at the center of piston piece, the air vent is located the projection of end cover of holding one's breath along inflator central line direction, the position that just is located between piston piece and the end cover in the inflator is provided with the spring, the both ends difference butt of spring is in order to provide the. The utility model discloses simple structure, excellent in use effect only can be in the in-process exhaust of concertina wave pipe compression.

Description

One-way exhaust valve

Technical Field

The utility model relates to an exhaust valve, concretely relates to one-way exhaust valve.

Background

In various engineering constructions such as home decoration engineering and the like, a handheld impact drill is usually adopted to drill holes on buildings. However, a great amount of dust and particles are generated in the using process of the percussion drill, indoor air pollution is caused, the sight of drilling of an operator is influenced, and the health of the operator is damaged when the operator is in a dust environment for a long time.

To solve this problem, a telescopic dust-proof sleeve is usually used to prevent dust during drilling. The telescopic dustproof sleeve comprises an exhaust ring sleeve and a telescopic ring sleeve which are separated and arranged at the same center line, a telescopic corrugated pipe is arranged between the exhaust ring sleeve and the telescopic ring sleeve at the same center line, two ends of the telescopic corrugated pipe are respectively and fixedly connected to the exhaust ring sleeve and the telescopic ring sleeve to be communicated with inner holes of the exhaust ring sleeve, a rubber sealing ring which is arranged at the same center line with the telescopic ring sleeve is bonded on one side surface of the telescopic ring sleeve back to the exhaust ring sleeve, an exhaust hole is arranged on the exhaust ring sleeve in a penetrating mode along the radial direction of the exhaust ring sleeve, an air filter is arranged on the outer side of the exhaust ring sleeve and corresponds to the exhaust hole, an air inlet of the air filter is connected with an air inlet pipe, one end, far away from the air filter, of the air inlet pipe is in threaded connection. However, the one-way exhaust valve should be designed to have the advantages of simple structure, good use effect and the like, which needs further consideration.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a simple structure, excellent in use effect's one-way discharge valve.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a one-way exhaust valve comprises an inflator, a sealing end cover is in threaded sealing connection with an opening end of the inflator, an air inlet is formed in the bottom of the inflator, an inner tube which is arranged on the same center line as the inflator and communicated with the air inlet is fixedly connected to the inner bottom surface of the inflator, an air closing end cover is in sealing connection with one end, far away from the air inlet, of the inner tube, the air closing end cover and the sealing end cover are arranged at intervals, a plurality of air outlet holes communicated with an inner hole of the inner tube are uniformly formed in a tube body of the inner tube at intervals along the circumferential direction of the tube body, a piston sheet is arranged in the inflator and between the air closing end cover and the sealing end cover and can be in sliding fit with the inflator along the direction of the center line of the inflator, an air vent is formed in the center of the piston sheet, the projection of the air, the two ends of the spring are respectively abutted against the piston sheet and the sealing end cover so as to provide spring force for the piston sheet to be abutted against the air closing end cover, and the sealing end cover is provided with an air outlet.

The utility model discloses in the application, the bellows compression exhaust, during the air entered into the inner tube through the air inlet, the venthole on the inner tube entered into the inflator again, and the piston piece received the spring force butt on the end cover of closing the gas, and along with the increase of air pressure, the air just can be with the piston piece from closing the end cover of opening in top, and the air just can enter into the other end of inflator through the air vent at piston piece center, finally discharges through the gas outlet.

Preferably, a rubber sealing baffle ring which is arranged along the same center line with the vent hole is bonded on the side surface of the piston piece facing the air-closing end cover, so that the air tightness can be improved.

As optimization, the venthole is the bar and follows inner tube length direction extends, and when some substrates that drilling rate is fast were bored in the impact, the bellows compression rate was fast, and the bar venthole can increase the air output, makes the better compression of bellows.

As optimization, the outer bottom surface of inflator just is located the position fixedly connected with of air inlet is used for right the air inlet carries out the filtration net that covers, can avoid some great dregs to enter into the inside jam that causes the piston piece of inflator.

To sum up, the beneficial effects of the utility model reside in that: the utility model discloses simple structure, excellent in use effect only can be in the in-process exhaust of concertina wave pipe compression.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of a dust-proof sleeve for a percussion drill hole;

FIG. 2 is a cross-sectional view of a one-way vent valve in a dust boot of a percussion drill hole;

FIG. 3 is a cross-sectional view of an air filter in a dust boot of a percussion drill.

Detailed Description

The utility model is further described in detail by combining the attached drawings to the dustproof cover for percussion drill drilling which adopts the structure of the utility model.

As shown in fig. 1 to 3, the dust-proof cover for percussion drill drilling in this embodiment includes a fixed ring sleeve 1 and a telescopic ring sleeve 2 which are separated from each other and are disposed on the same central line, the inner diameter of the fixed ring sleeve 1 is identical to the inner diameter of the telescopic ring sleeve 2, a fastening rubber sleeve disposed on the same central line as the fixed ring sleeve is installed in an inner hole of the fixed ring sleeve 1, the inner hole of the fastening rubber sleeve is a variable diameter hole, the diameter of the inner hole is gradually reduced from one end away from the telescopic ring sleeve 2 toward one end of the telescopic ring sleeve 2 along the central line direction of the fastening rubber sleeve, the fixed ring sleeve 1 can be fixed by the drill bit of the percussion drill to be used through the fastening rubber sleeve, a plurality of guide slide bars 3 are uniformly spaced around the central line of the fixed ring sleeve 1 between the fixed ring sleeve 1 and the telescopic ring sleeve 2, the axial direction of the guide slide bars 3 is parallel to the central line direction of the fixed ring sleeve 1, and the projections of the guide slide bars 3 along the central line direction In the projection, two ends of a guide slide rod 3 respectively penetrate through a fixed ring sleeve 1 and a telescopic ring sleeve 2, the guide slide rod 3 can respectively slide-fit with the fixed ring sleeve 1 and the telescopic ring sleeve 2 along the direction parallel to the central line of the fixed ring sleeve 1, two ends of the guide slide rod 3 are respectively fixedly connected with a limiting head 4 to limit the guide slide rod 3 by respectively butting against the fixed ring sleeve 1 and the telescopic ring sleeve 2, a telescopic corrugated pipe 5 which is arranged with the fixed ring sleeve 1 and the telescopic ring sleeve 2 along the same central line is further arranged between the fixed ring sleeve 1 and the telescopic ring sleeve 2, two ends of the telescopic corrugated pipe 5 are respectively hermetically connected with the fixed ring sleeve 1 and the telescopic ring sleeve 2 to be communicated with inner holes of the fixed ring sleeve 1 and the telescopic ring sleeve 2, a spring I6 is sleeved on a rod body of the guide slide rod 3 and between the fixed ring sleeve 1 and the telescopic ring sleeve 2, two ends of the spring I6 respectively butt against the fixed ring sleeve 1 and the telescopic ring sleeve 2 to be respectively The ring sleeve 2 provides spring force, and when the limiting head 4 abuts against the fixed ring sleeve 1 and the telescopic ring sleeve 2 on one side of the limiting head, the telescopic corrugated pipe 5 is in an extension state.

In the specific embodiment, a rubber sealing ring arranged along the same central line as the telescopic ring sleeve 2 is bonded on the side surface of the telescopic ring sleeve 2, which is opposite to the fixed ring sleeve 1, the thickness of the rubber sealing ring along the direction of the central line of the rubber sealing ring is greater than that of the limiting head 4 on the side where the rubber sealing ring is located, and a containing hole for containing the limiting head 4 is concavely arranged on the side surface of one side of the rubber sealing ring, which faces the telescopic ring sleeve 2 and corresponds to the position of the limiting head 4 on the side where the rubber sealing ring is located;

fixed ring cover 1 orientation one side of flexible ring cover 2 still fixedly connected with rather than the exhaust ring cover 7 with the central line, the internal diameter of exhaust ring cover 7 with the internal diameter of fixed ring cover 1 is unanimous, telescopic bellows 5 just is located the one end sealing connection of fixed ring cover 1 is in order to communicate with the hole of exhaust ring cover 7 on exhaust ring cover 7, wears to be equipped with an exhaust hole along its radial direction on the exhaust ring cover 7, and the outside of exhaust ring cover 7 and the position that corresponds the exhaust hole are provided with air cleaner, and air cleaner's air inlet is connected with intake pipe 8, and air cleaner 7's one end threaded connection is just located the one end in the exhaust hole of exhaust ring cover 7 outside in intake pipe 8.

In this embodiment, the inboard of exhaust ring cover 7 is provided with blast pipe 9, and blast pipe 9 includes the edge the connecting pipe that exhaust ring cover 7 radial direction extended setting, and the one end of connecting pipe is connected the exhaust hole just is located on the one end port of exhaust ring cover 7 inboard, the other one end orientation of connecting pipe flexible ring cover 2 place one side direction is extended and is formed the extension pipe, and one-way discharge valve is installed in the end of extension pipe in order to avoid gaseous one end through the extension pipe and keep away from the connecting pipe to discharge.

In this embodiment, the one-way exhaust valve includes an air cylinder 10, a sealing end cap 11 is screwed and sealed to an opening end of the air cylinder 10, an air inlet is opened at a bottom of the air cylinder 10, an inner tube 12 which is concentric with the air cylinder 10 and communicated with the air inlet is fixedly connected to an inner bottom surface of the air cylinder 10, an end of the inner tube 12, which is far away from the air inlet, is hermetically connected to an air-closing end cap 13, the air-closing end cap 13 is spaced from the sealing end cap 11, a plurality of air outlets communicated with an inner hole of the inner tube 12 are evenly spaced along a circumferential direction of a tube body of the inner tube 12, a piston plate 14 is disposed in the air cylinder 10 and between the air-closing end cap 13 and the sealing end cap 11, the piston plate 14 can be in sliding fit with the air cylinder 10 along the central line direction of the air cylinder 10, an air vent is opened at a center of, a spring II 15 is arranged in the air cylinder 10 and between the piston sheet 14 and the sealing end cover 11, two ends of the spring II 15 are respectively abutted against the piston sheet 14 and the sealing end cover 11 so as to provide spring force for the abutment of the piston sheet 14 against the air closing end cover 13, and the sealing end cover 11 is provided with an air outlet and is connected with the extension pipe through the air outlet.

In the embodiment, the air filter includes a filter cartridge 16, a filter inlet having the same center line with the filter cartridge 16 is disposed at the bottom of the filter cartridge 16, a filter cartridge 17 is installed in the filter cartridge 16, an exhaust end cover 18 for covering the opening of the filter cartridge 16 is disposed at the opening end of the filter cartridge 16, a filter outlet is disposed on the exhaust end cover 18, an end cover fixing device for pressing and fixing the exhaust end cover 18 at the opening of the filter cartridge 16 is further disposed on the filter cartridge 16, the end cover fixing device includes a plurality of rotating seats 19 fixedly connected to the outer surface of the filter cartridge 16 and close to the opening end of the filter cartridge 16, the plurality of rotating seats 19 are uniformly spaced along the circumferential direction of the filter cartridge 16, a rotating shaft is disposed on the rotating seats 19, two ends of the rotating shaft are rotatably connected to the rotating seats 19, the axis of the rotating shaft is perpendicular to the center line of the filter cartridge 16, the slide hole is a through hole, a pull rod 21 which can be in sliding fit with the slide hole along the central line direction of the slide hole is arranged in the slide hole in a penetrating mode, two ends of the pull rod 21 are fixedly connected with an abutting head 22 and a clamping head 23 respectively to limit the pull rod 21, a spring III 24 which can provide spring force for the clamping head 23 to abut against the rotating shaft is further sleeved on the rod body which is arranged between the abutting head 22 and the rotating shaft on the pull rod 21, clamping seats 25 are fixedly connected on the exhaust end cover 18 and correspond to the positions of each rotating seat 19 respectively, bayonets which can enable the pull rod 21 to be clamped are formed in the clamping seats 25, when the exhaust end cover 18 covers the opening of the filter cartridge 16, the rod body which is arranged between the rotating shaft and the clamping head 22 can be clamped into the bayonets, and the exhaust end cover 18 can be tightly pressed on the opening of the filter cartridge 16 through.

In the present embodiment, a blocking plate 26 is disposed in the filter cartridge 16, a plane of the blocking plate 26 is perpendicular to a central line of the filter cartridge 16, the blocking plate 26 can be in sliding fit with the filter cartridge 16 along the direction of the central line of the filter cartridge 16, an inner opening disposed along the same central line as the filter inlet is formed in the blocking plate 26, one end of the air inlet pipe 8 penetrates through the filter inlet and is connected to the blocking plate 26 to communicate with the inner opening, an installation sliding sleeve 27 is further disposed in the filter cartridge 16 and located on one side of the blocking plate 26 facing the opening of the filter cartridge 16, the diameter of the inner hole of the installation sliding sleeve 27 is greater than that of the inner opening, the installation sliding sleeve 27 can be in sliding fit with the filter cartridge 16 along the direction of the central line of the filter cartridge 16, the filter cartridge 17 is embedded in the inner hole of the installation sliding sleeve 27, and an annular sealing rubber gasket disposed along the, the exhaust end cover 18 and the side of one side facing the inner hole of the filter cartridge 16 are fixedly connected with a push block 28, when the exhaust end cover 18 covers the opening of the filter cartridge 16, the push block 28 can act on the mounting sliding sleeve 27 to enable the mounting sliding sleeve 27 to abut against the blocking piece 26 on the bottom of the filter cartridge 16, and when the blocking piece 26 pushes the mounting sliding sleeve 27 to move towards the opening of the filter cartridge 16, one end of the mounting sliding sleeve 27, which is far away from the blocking piece 26, can extend out of the opening of the filter cartridge 16.

In this embodiment, the push block 28 is an annular structure and is fixedly connected to the exhaust end cover 18 along a side surface of a central line direction thereof, an outer diameter of the push block 28 is smaller than an inner hole diameter of the filter cartridge 16, an inner diameter of the push block 28 is larger than an inner diameter of the mounting sliding sleeve 27, and the filter row opening is located on the exhaust end cover 18 inside the push block 28.

In this embodiment, the blocking piece 26 is fixedly connected to one side of the filtering inlet, and is connected to the inserting sleeve 20, which is disposed on the same center line as the inner opening, the outer diameter of the inserting sleeve 20 is smaller than the diameter of the filtering inlet, and the air inlet pipe 8 is inserted into the inserting sleeve 20 and is in threaded connection with the inserting sleeve 20.

In the specific implementation process, a rubber sealing baffle ring which is arranged along the same center line with the vent hole is bonded on the side surface of the piston sheet facing the air-closing end cover, so that the air tightness can be improved.

The venthole is the bar and follows inner tube length direction extends, and when the percussion drill was at some fast substrate of drilling rate, the concertina bellows compression rate was fast, and the bar venthole can increase the air output, made the better compression of concertina bellows.

The outer bottom surface of inflator just is located the position fixedly connected with of air inlet is used for right the air inlet carries out the filtration net that covers, can avoid some great dregs to enter into the inside jamming that causes the piston piece of inflator.

The filter mesh comprises a fixed outer ring which is arranged along the same central line as the air inlet, a mesh body which is positioned on the same plane with the fixed outer ring is arranged in the fixed outer ring, the mesh body is fixedly connected with the fixed outer ring, and the fixed outer ring is arranged at the bottom of the inflator through a fixing screw.

Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A one-way exhaust valve is characterized in that: the inflator comprises an inflator, the open end of the inflator is in threaded sealing connection with a sealing end cover, an air inlet is formed in the bottom of the inflator, the inner bottom surface of the inflator is fixedly connected with an inner tube which is arranged on the same center line of the inflator and communicated with the air inlet, one end of the inner tube, far away from the air inlet, is in sealing connection with an air-closing end cover, the air-closing end cover and the sealing end cover are arranged at intervals, a plurality of air outlets communicated with an inner hole of the inner tube are formed in a tube body of the inner tube at uniform intervals along the circumferential direction of the tube body, a piston sheet is arranged in the inflator and between the air-closing end cover and the sealing end cover, the piston sheet can be in sliding fit with the inflator along the center line direction of the inflator, an air vent is formed in the center of the piston sheet, the projection of the air vent along the center line direction of the air-closing end cover is located in the projection along the center line The spring force and the sealing end cover are provided with an air outlet.

2. The one-way exhaust valve according to claim 1, wherein: and a rubber sealing retaining ring which is arranged along the same center line as the vent hole and can act on the air-closing end cover is bonded on the side surface of the piston sheet facing the air-closing end cover.

3. The one-way exhaust valve according to claim 1, wherein: the air outlet is strip-shaped and extends along the length direction of the inner tube.

4. The one-way exhaust valve according to claim 1, wherein: the outer bottom surface of the inflator is fixedly connected with a filtering grid used for covering the air inlet.