CN211839395U

CN211839395U - Pneumatic blow gun with adjustable sealing device

Info

Publication number: CN211839395U
Application number: CN202020266752.3U
Authority: CN
Inventors: 张涛
Original assignee: Wuxi Hengzi Machinery Technology Co ltd
Current assignee: Wuxi Hengzi Machinery Technology Co ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-11-03
Anticipated expiration: 2030-03-06

Abstract

The utility model discloses a pneumatic rifle that blows of adjustable sealing device belongs to pneumatic rifle technical field that blows. The pneumatic blow gun with the adjustable sealing device comprises a gun body, an air outlet nozzle and a sealing device, wherein the air outlet nozzle is in threaded connection with the top end of the gun body and is communicated with an air cavity of the gun body; the sealing device is positioned in the gun body and consists of a valve core, a sealing cover and a return spring, and two ends of the return spring are respectively contacted with the valve core and the sealing cover; the valve core can slide back and forth in the gun body; the sealing cover is connected with the gun body through airtight threads. The reset spring in the sealing device can generate elastic fatigue after repeated compression, the sealing device can generate air leakage due to insufficient elasticity of the reset spring, and the pneumatic blow gun of the adjustable sealing device can compress the length of the reset spring by screwing the sealing cover inwards, so that the elasticity of the reset spring is enhanced, and the air leakage problem is solved.

Description

Pneumatic blow gun with adjustable sealing device

Technical Field

The utility model relates to a pneumatic rifle technical field that blows, in particular to adjustable sealing device's pneumatic rifle that blows.

Background

The pneumatic blow gun is mainly used for dust removal work in factories and during installation and maintenance, and the most common use environment is a narrow area, a high place and cleaning work in an air pipe which can not be touched by hands. The pneumatic blow gun effectively reduces the consumption of compressed air by utilizing the principle of air amplification, thereby generating strong and accurate airflow and driving ambient air to work together.

When the pneumatic blow gun is used, the trigger needs to be repeatedly pulled for cleaning; the return spring in the sealing device can generate elastic fatigue after repeated compression, and the return spring is a main component for ensuring the sealing performance of the sealing device; therefore, the traditional pneumatic blow gun has the phenomenon of air leakage after being used for a period of time, and the service life of the pneumatic blow gun is seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adjustable sealing device's pneumatic rifle that blows to solve traditional pneumatic rifle and appear the problem that the gas leakage appears in sealing device after reset spring elastic fatigue.

In order to solve the technical problem, the utility model provides a pneumatic blow gun with an adjustable sealing device, which comprises a gun body, an air outlet nozzle and a sealing device, wherein the air outlet nozzle is connected with the top end of the gun body in a threaded manner and is communicated with an air cavity of the gun body;

the sealing device is positioned in the gun body and used for controlling the on-off of gas;

the sealing device consists of a valve core, a sealing cover and a return spring, and two ends of the return spring are respectively contacted with the valve core and the sealing cover; the valve core can slide back and forth in the gun body; the sealing cover is in threaded connection with the gun body;

a handle is arranged on the gun body, an air inlet channel is formed in the handle, and the air inlet channel is communicated with the sealing device;

the sealing device is communicated with the air cavity through a connecting air passage;

the gun body is connected with a trigger in a rotating mode, and the trigger can be rotated to control the on-off of the sealing device to gas.

Optionally, the thread connecting the sealing cover and the gun body is an airtight thread.

Optionally, the valve core is composed of a sliding rod and a blocking head, and the blocking head is located at the tail end of the sliding rod and has a diameter larger than that of the sliding rod; the top end of the sliding rod is contacted with the trigger; the connecting air channel is positioned above the sliding rod and communicated with the sliding cavity of the sliding rod.

Optionally, a double-layer rubber ring is arranged on the sliding rod; the sealing ring is sleeved on the connecting surface of the blocking head and the sliding rod.

Optionally, the air outlet nozzle is composed of a fixed air nozzle and a movable air nozzle, and the fixed air nozzle is connected with the movable air nozzle ball.

Optionally, a ball groove is formed at the top end of the fixed air tap, a fixed air passage is formed in the middle of the fixed air tap, and the fixed air passage penetrates through the fixed air tap and the ball groove; the tail end of the movable air nozzle is provided with a ball head, the middle of the movable air nozzle is provided with a movable air passage, and the movable air passage penetrates through the movable air nozzle and the ball head; the ball head can rotate in the ball groove.

Optionally, the gun body is provided with an opening hook.

Optionally, a weight reduction groove is formed in the handle to reduce the weight of the handle; the handle outside is equipped with anti-skidding finger slot.

Optionally, the gun body is provided with an air blocking head, and the air blocking head is in threaded connection with the gun body.

The utility model provides a pneumatic blow gun with an adjustable sealing device, which comprises a gun body, an air outlet nozzle and a sealing device, wherein the air outlet nozzle is connected with the top end of the gun body through a thread and is communicated with an air cavity of the gun body; the sealing device is positioned in the gun body and consists of a valve core, a sealing cover and a return spring, and two ends of the return spring are respectively contacted with the valve core and the sealing cover; the valve core can slide back and forth in the gun body; the sealing cover is connected with the gun body through airtight threads. The reset spring in the sealing device can generate elastic fatigue after repeated compression, the sealing device can generate air leakage due to insufficient elasticity of the reset spring, and the pneumatic blow gun of the adjustable sealing device can compress the length of the reset spring by screwing the sealing cover inwards, so that the elasticity of the reset spring is enhanced, and the air leakage problem is solved.

Drawings

Fig. 1 is an overall sectional view of a pneumatic lance for an adjustable sealing device according to the present invention;

FIG. 2 is an enlarged cross-sectional view of a pneumatic lance seal of an adjustable seal according to the present invention;

fig. 3 is a cross-sectional view of the air outlet nozzle of the pneumatic lance with an adjustable sealing device provided by the utility model.

Detailed Description

The pneumatic blow gun with the adjustable sealing device according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

The utility model provides a pneumatic blow gun with an adjustable sealing device, the structure of which is shown in figure 1 and figure 2, and the pneumatic blow gun comprises a gun body 1, an air outlet nozzle 2 and a sealing device 3, wherein the air outlet nozzle 2 is connected with the top end of the gun body 1 through a thread and is communicated with an air cavity 16 of the gun body 1; the sealing device 3 is positioned in the gun body 1 and used for controlling the on-off of gas; the sealing device 3 consists of a valve core 31, a sealing cover 32 and a return spring 33, and two ends of the return spring 33 are respectively contacted with the valve core 31 and the sealing cover 32; the valve core 31 can slide back and forth in the gun body 1; the sealing cover 32 is in threaded connection with the gun body 1; the thread for connecting the sealing cover 32 and the gun body 1 is an airtight thread, so that the sealing performance of the joint of the sealing cover 32 and the gun body 1 can be still ensured no matter how long the sealing cover 32 is screwed into the gun body 1; a handle 11 is arranged on the gun body 1, an air inlet channel 111 is formed in the handle 11, and the air inlet channel 111 is communicated with the sealing device 3; the sealing device 3 is communicated with the air cavity 16 through a connecting air passage 15; the gun body 1 is rotatably connected with a trigger 12, and the on-off of the sealing device 3 to gas can be controlled by rotating the trigger 12.

Further, the valve core 31 is composed of a sliding rod 311 and a blocking head 312, wherein the blocking head 312 is located at the end of the sliding rod 311 and has a diameter larger than that of the sliding rod 311; the top end of the sliding rod 311 is contacted with the trigger 12; the connecting air channel 15 is positioned above the sliding rod 311 and is communicated with the sliding cavity of the sliding rod 311; when the sliding rod 311 slides in the sliding cavity under the action of the trigger 12, the blocking head 312 is far away from the sliding cavity, and gas is communicated with the gas cavity 16 through the sliding cavity and the connecting gas channel 15; when the trigger 12 is released, the sliding rod 311 restores to the original position under the action of the return spring 33, and the blocking head 312 blocks the sliding cavity again; the sliding rod 311 is provided with a double-layer rubber ring 34, so that the sliding rod 311 is ensured not to leak air when sliding in the sliding cavity; a sealing ring 35 is sleeved on the connecting surface of the blocking head 312 and the sliding rod 311, so that the air tightness during blocking is ensured; the return spring 33 will generate elastic fatigue after repeated compression for a period of time, the return spring 33 is a main component for ensuring the sealing performance of the sealing device 3, the elastic force of the return spring 33 is mainly used for pushing the blocking head 312 to block the sliding cavity, once the elastic force is smaller than a certain value, the blocking head 312 loses the blocking effect, and the sliding cavity will generate air leakage; at this time, the sealing cover 32 is only required to be screwed inwards to compress the length of the return spring 33, so that the elastic force of the return spring 33 is enhanced, the air leakage problem is finally solved, and the service life of the pneumatic blow gun is prolonged.

Specifically, as shown in fig. 3, the air outlet nozzle 2 is composed of a fixed air nozzle 21 and a movable air nozzle 22, and the fixed air nozzle 21 and the movable air nozzle 22 are ball-jointed; the top end of the fixed air tap 21 is provided with a ball groove 211, the middle of the fixed air tap 21 is provided with a fixed air passage 212, and the fixed air passage 212 penetrates through the fixed air tap 21 and the ball groove 211; the tail end of the movable air nozzle 22 is provided with a ball head 221, the middle of the movable air nozzle is provided with a movable air passage 222, and the movable air passage 222 penetrates through the movable air nozzle 22 and the ball head 221; the ball head 221 can rotate in the ball groove 211; the air passes through the fixed air passage 212 and the movable air passage 222 for dust removal, and after the movable air nozzle 22 rotates for a certain angle, the air can still pass through the fixed air passage 212 and the movable air passage 222, so that dust removal is performed on narrow and tortuous positions at multiple angles.

Specifically, please continue to refer to fig. 1, an opening hook 13 is arranged on the gun body 1, one end of the opening hook 13 is integrated with the gun body 1, and the other end is open, so that the gun can be hung on an open hanging opening or a closed hanging opening of a machine; a weight reduction groove 112 is formed in the handle 11 to reduce the weight of the handle 11 and realize long-time operation of workers; an anti-slip finger groove 113 is formed in the outer portion of the handle 11, the anti-slip finger groove 113 is formed in a holding position of a hand of a worker, and the worker can take the multi-angle pneumatic blow gun conveniently; be equipped with gas shutoff head 14 on the rifle body 1, gas shutoff head 14 with rifle body 1 threaded connection works as when the inside dust or the greasy dirt of being infected with of multi-angle pneumatic blow rifle, opens gas shutoff head 14 can be right the inside washing that blows of multi-angle pneumatic blow rifle.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims

1. The pneumatic blow gun with the adjustable sealing device is characterized by comprising a gun body (1), an air outlet nozzle (2) and a sealing device (3), wherein the air outlet nozzle (2) is in threaded connection with the top end of the gun body (1) and is communicated with an air cavity (16) of the gun body (1);

the sealing device (3) is positioned in the gun body (1) and used for controlling the on-off of gas;

the sealing device (3) consists of a valve core (31), a sealing cover (32) and a return spring (33), and two ends of the return spring (33) are respectively contacted with the valve core (31) and the sealing cover (32); the valve core (31) can slide back and forth in the gun body (1); the sealing cover (32) is in threaded connection with the gun body (1);

a handle (11) is arranged on the gun body (1), an air inlet channel (111) is formed in the handle (11), and the air inlet channel (111) is communicated with the sealing device (3);

the sealing device (3) is communicated with the air cavity (16) through a connecting air passage (15);

the gun body (1) is rotatably connected with a trigger (12), and the trigger (12) can be rotated to control the on-off of the sealing device (3) to gas.

2. Pneumatic lance of an adjustable sealing device according to claim 1, characterized in that the thread of the sealing cap (32) to the lance body (1) is a gas tight thread.

3. The pneumatic lance of an adjustable sealing device according to claim 1, characterized in that the cartridge (31) consists of a sliding rod (311) and a blocking head (312), the blocking head (312) being located at the end of the sliding rod (311) and having a diameter greater than the diameter of the sliding rod (311); the top end of the sliding rod (311) is contacted with the trigger (12); the connecting air channel (15) is positioned above the sliding rod (311) and is communicated with the sliding cavity of the sliding rod (311).

4. A pneumatic lance of adjustable sealing means according to claim 3, characterized in that the sliding bar (311) is provided with a double rubber ring (34); and a sealing ring (35) is sleeved on the connecting surface of the blocking head (312) and the sliding rod (311).

5. A pneumatic lance with adjustable sealing means according to claim 1, characterized in that said nozzle (2) consists of a fixed nozzle (21) and a movable nozzle (22), said fixed nozzle (21) and said movable nozzle (22) being ball-jointed.

6. The pneumatic lance of claim 5, wherein the fixed air nozzle (21) has a ball groove (211) at the top and a fixed air passage (212) in the middle, and the fixed air passage (212) penetrates through the fixed air nozzle (21) and the ball groove (211); a ball head (221) is arranged at the tail end of the movable air nozzle (22), a movable air passage (222) is formed in the middle of the movable air nozzle, and the movable air passage (222) penetrates through the movable air nozzle (22) and the ball head (221); the ball head (221) can rotate in the ball groove (211).

7. Pneumatic lance of an adjustable sealing device according to claim 1, characterized in that the lance body (1) is provided with an open hook (13).

8. The pneumatic lance of an adjustable sealing device of claim 1, characterized in that the handle (11) is internally provided with lightening slots (112) to lighten the weight of the handle (11); the handle (11) is externally provided with an anti-slip finger groove (113).

9. The pneumatic blow gun with adjustable sealing device according to claim 1, characterized in that the gun body (1) is provided with a gas blocking head (14), and the gas blocking head (14) is in threaded connection with the gun body (1).