TWI641421B - Blowing gun safety relief device - Google Patents

Abstract

A dust blower safety pressure relief device, Ute means that the center of the body and the nozzle head is provided with an air outlet hole and a shaft hole, the inner diameter of the air outlet hole is smaller than the inner diameter of the shaft hole, and the shaft hole can be locked by a joint An air outlet, the inner diameter of the shaft hole is larger than the outer diameter of the air outlet tube, and the body is provided with a plurality of pressure relief holes corresponding to the outer circumference of the air outlet of the air outlet tube, and the outer portion of the body corresponds to the front of the pressure relief hole The pressure relief ring is provided with an elastic deformation portion corresponding to the pressure relief hole, and a siphon lock state is normally maintained between the elastic deformation portion and the pressure release hole, and the wind is discharged when the wind encounters the obstacle. The speed is slow and internal pressure is generated in the cavity, so that the compressed air can be turned from the plurality of pressure relief holes to open the elastic deformation portion to perform the exhaust pressure relief action.

Description

Blowing gun safety pressure relief device

The blow-off gun safety pressure relief device of the invention is mainly applied to when the wind blower of the air gun encounters an obstacle, the wind speed is slowed down and an internal pressure is generated in the cavity, so that the compressed air can be moved from the plurality of pressure relief holes The externally turned elastic deformation part acts as an exhaust pressure relief device, and provides a safe pressure relief device to prevent the user from being damaged by a powerful high pressure gas column.

According to the conventional air blower, the air gun is mainly used for cleaning the cutting chips, cutting fluid and dust impurities, and is directly discharged by the air gun nozzle for air blowing by using the compressed air generated by the air compressor.

However, the air gun nozzle for air blowing is very fast and concentrated. The user is very easily injured by the powerful high-pressure air column, and the situation of personal injury is still pending. Overcome one of the problems and problems solved.

In addition, a blow-off gun with an adjusted flow rate is provided with a constricted neck or a plug adjacent to the blow port, and opposite sides of the blow port, the constricted neck or the plug are provided to provide air pressure. The flow rate of the constricted neck or the plug head is increased to generate a vacuum, and the air volume in the vicinity is instantaneously sucked by the two side holes, so that the air volume at the air blowing port end of the air blowing pipe is increased.

However, in the actual use of the blow gun with the adjusted flow rate, when the air volume in the vicinity is instantaneously sucked into the two side holes, and the air volume at the air blowing end of the air blowing pipe is increased, a very loud noise and noise are generated. For its existing problems and shortcomings that have yet to be overcome.

The present inventor is currently engaged in the manufacture and design of related products, and has accumulated many years of practical experience and experience. Actively investing in innovation and improvement in view of the existing problems and lack of existing air blowers and air blow guns with adjustable flow rates. The spirit of the blow gun safety relief device completed.

The technical means applied to solve the problem and the effect of the prior art are as follows: the center of the body and the nozzle head is provided with an air outlet hole and a shaft hole, and the inner diameter of the air outlet hole is smaller than the inner diameter of the shaft hole, and the shaft hole can be The inner diameter of the shaft hole is larger than the outer diameter of the air outlet tube, and the body is provided with a plurality of pressure relief holes corresponding to the outer circumference of the air outlet of the air outlet tube, and the outer portion of the body corresponding to the air outlet A pressure relief ring is arranged in front of the pressure hole, and the pressure release ring is provided with an elastic deformation portion corresponding to the pressure relief hole, and a siphon lock state is normally maintained between the elastic deformation portion and the pressure release hole, and the wind encounters When obstructing, the air outlet speed becomes slower and internal pressure is generated in the cavity, so that the compressed air can be turned outward from the plurality of pressure relief holes to perform the exhaust pressure relief action, thereby providing a safe pressure relief device. Avoid the user being hurt by the powerful high-pressure air column, and the situation of personal injury, the improvement of efficacy, to achieve its main purpose.

In the above-mentioned blow gun safety relief device, the body is sequentially provided with a slope, a flat surface and a vertical surface behind the pressure relief hole, and a middle of the pressure relief ring has a thickness corresponding to the pressure relief hole. The flange has a slope corresponding to the slope, and the rear end of the pressure relief ring has a thin elastic deformation portion corresponding to the flat surface and the vertical surface, and the elastic deformation portion and the pressure relief hole are usually A siphon-locking state is maintained between the flat surface and the vertical surface. When the wind encounters an obstruction, the wind speed becomes slow and internal pressure is generated in the cavity, so that the compression is empty. The gas can be exhausted from a plurality of pressure relief holes along the inclined surface to open the elastic deformation portion to provide a pressure relief device, providing a safe and quiet and noiseless pressure relief device, which has an improvement in efficiency and is a secondary purpose achiever. .

In the above-mentioned blow gun safety relief device, the inner diameter and the outer diameter of the air outlet of the air outlet tube are gradually reduced inward.

In the above-mentioned blow gun safety relief device, the front of the air outlet of the nozzle head is provided with a front narrow, rear wide conical guide surface corresponding to the shaft hole of the body.

The above-mentioned blow gun safety pressure relief device, wherein: the air outlet pipe is provided with a groove corresponding to the outer edge of the front of the joint, the groove is fastened by a metal buckle, and the shaft hole of the body corresponds to A metal groove is provided at the metal buckle.

In the above-mentioned blow gun safety relief device, the outer portion of the air outlet tube is provided with an O-ring, and the shaft hole of the body is provided with a receiving groove corresponding to the O-ring, and the external structure of the O-ring is The inner wall of the groove is in a tight fit state.

In the above-mentioned blow gun safety relief device, the inner circumference of the front end of the joint is provided with an internal thread, and the body is provided with an external thread corresponding to the internal thread of the joint, so that the internal thread of the joint can be locked and fixed to the body. In the external thread, a plurality of grooves are provided at the outer circumference of the rear end of the joint as a user for tightening or unscrewing the joint.

The above-mentioned blow gun safety pressure relief device, wherein the nozzle head is a narrow front and rear wide cone and is made of a metal material.

The above-mentioned blow gun safety pressure relief device, wherein: the pressure release ring can be made of rubber or silicone rubber.

10‧‧‧Air duct

11‧‧‧air outlet

12‧‧‧ trench

13‧‧‧Metal buckle

14‧‧‧O-ring

20‧‧‧Connectors

21‧‧‧Perforation

22‧‧‧ internal thread

23‧‧‧ Groove

30‧‧‧Ontology

31‧‧‧ shaft hole

32‧‧‧External thread

33‧‧‧ accommodating slots

34‧‧‧Combined convex ring

35‧‧‧ Pressure relief hole

36‧‧‧Bevel

37‧‧‧Flat surface

38‧‧‧Vertical

39‧‧‧ Combined with the order

40‧‧‧Nozzle head

41‧‧‧Air outlet

42‧‧‧Conduit

43‧‧‧ Combined with a concave ring

50‧‧‧pressure relief ring

51‧‧‧Combination Department

52‧‧‧Front

53‧‧‧Bevel

54‧‧‧Elastic deformation department

First Figure: is a schematic cross-sectional view of a three-dimensional combination of the present invention.

Second Figure: A perspective exploded view of the present invention.

Third drawing: A schematic view of the sectional combination of the present invention.

Figure 4: Schematic diagram of the F-F section in the third diagram.

Fig. 5 is a schematic view showing the action of the safety relief of the present invention.

In order to make the person skilled in the art familiar with the art easy to understand the construction contents of the present invention and the functional benefits that can be achieved, a specific embodiment will be listed, and the detailed description will be given as follows: a blow gun safety leak For the pressure device, please refer to the first, second and third figures: a schematic diagram of the three-dimensional combined section, the three-dimensional decomposition and the sectional combination of the present invention. And the fourth figure: is a schematic view of the F-F section of the third figure. The utility model mainly comprises: an air outlet pipe 10, a joint 20, a body 30, a spray head 40 and a pressure release ring 50; wherein: the front end of the air outlet pipe 10 is provided with an air outlet with an inner diameter and an outer diameter gradually decreasing inward. The outer portion of the air outlet pipe 10 is provided with a joint 20, and the air outlet pipe 10 is provided with a groove 12 corresponding to the outer edge of the front end of the joint 20. The groove 12 can be fastened and fastened by a metal buckle 13 The air outlet pipe 10 can be fixed to the center of the body 30 by means of a joint 20, and an O-ring 14 is disposed outside the air outlet pipe 10 to prevent compressed air from the air outlet pipe 10 and the body. A gap between 30 leaks out; a hole 21 is formed in the center of the joint 20, and the inner diameter of the hole 21 It is equivalent to the outer diameter of the air outlet pipe 10, so that the air outlet pipe 10 can pass through the through hole 21 of the joint 20. The inner circumference of the front end of the joint 20 is provided with an internal thread 22 for fixing to the body 30 as a lock. The outer circumference of the rear end of the joint 20 is provided with a plurality of grooves 23 for screwing or unscrewing the joint 20; the center of the body 30 is provided with a shaft hole 31 corresponding to the internal thread of the joint 20. An external thread 32 is provided at 22, and the external thread 32 can be used for locking and fixing the internal thread 22 of the joint 20 . The shaft hole 31 is provided with a receiving groove 33 corresponding to the metal buckle 13 and the O-ring 14 . The outer portion of the O-ring 14 is in a tight fit with the inner wall of the accommodating groove 33, so that the compressed air does not leak from the gap between the air outlet pipe 10 and the body 30, and the inside of the front end of the body 30 is provided with a circle. The convex ring 34 is combined to fix a nozzle head 40. The inner diameter of the shaft hole 31 is larger than the outer diameter of the air outlet 11 of the air outlet tube 10, and the middle portion of the body 30 corresponds to the outer circumference of the air outlet 11 a pressure relief hole 35, the body 30 is sequentially provided with a slope 36, a flat surface 37 and a vertical surface 38 behind the pressure relief hole 35. The outside of the body 30 is provided with a ring-shaped joint edge 39 corresponding to the front of the pressure-relief hole 35 for fixing and fixing a pressure-relief ring 50; the nozzle head 40 is made of a metal material, and the nozzle head 40 is front. A narrow, wide-width cone, the outer portion of the nozzle head 40 is provided with a ring-shaped concave ring 43 corresponding to the coupling convex ring 34 of the body 30, so that the nozzle head 40 can be combined with the concave joint 43 to be fixed to the body 30. In the ring 34, an air outlet 41 is formed in the center of the nozzle head 40. The inner diameter of the air outlet 41 is smaller than the inner diameter of the shaft hole 31 of the body 30. The rear of the air outlet 41 is corresponding to the shaft hole 31. a front narrow, rear wide conical flow guiding surface 42; The pressure relief ring 50 can be made of a resilient material such as rubber or silicone rubber. The pressure relief ring 50 is an inner annular ring. The front end of the pressure relief ring 50 corresponds to the joint edge 39. The pressure relief ring 50 is coupled to the joint edge 39 of the body 30 by the joint portion 51. The middle of the pressure release ring 50 is corresponding to the pressure relief hole 35. a flange 52 corresponding to the inclined surface 36 is provided with a slope 53. The rear end of the pressure relief ring 50 is provided with a thin elastic deformation portion 54 corresponding to the flat surface 37 and the vertical surface 38. The elastic deformation portion 54 maintains a state of siphon blocking between the flat surface 37 and the vertical surface 38.

The present invention, which is a combination of the above-mentioned various component structures, provides a blowdown gun safety pressure relief device, and in practical application: please refer to the fifth figure: a schematic diagram of the operation of the safety relief of the present invention . When the wind encounters the obstruction, the air outlet speed becomes slow and the internal pressure is generated in the cavity, that is, the elastic deformation portion 54 of the pressure relief ring 50 can be exhausted, so that the compressed air in the cavity can pass through the air outlet hole. The flow guiding surface 42 of the 41 is vented from the plurality of pressure relief holes 35 along the inclined surface 53 outwardly to the elastic deformation portion 54 of the pressure releasing ring 50, thereby providing a safe pressure relief device to prevent the user from being powerful. High pressure gas column injury.

In view of the above, the present invention provides a blowdown gun safety pressure relief device, which is confirmed by the inventors of the actual production and repeated operation tests, and can indeed achieve the expected functional benefits of the present invention, and at the same time It has not yet been discovered, and it has the industrial use value. It has already met the requirements of the practicality and progress of the invention patent, and applied for the invention patent to the bureau.

Claims (9)

A dust blower safety pressure relief device comprises: an air outlet pipe, a joint, a body, a nozzle head and a pressure relief ring; wherein: the front end of the air outlet pipe is provided with an air outlet, the outer part of the air outlet pipe a joint is provided, and the outlet pipe is locked and fixed at a central position inside the body; a pierr is arranged at the center of the joint as a wind pipe; the center of the body is provided with a shaft a nozzle head is disposed at a front end of the body, and an air outlet hole is disposed in a center of the nozzle head, wherein an inner diameter of the air outlet hole is smaller than an inner diameter of the shaft hole, and an inner diameter of the shaft hole is larger than an air outlet of the air outlet tube The outer diameter of the mouth, the middle of the body corresponding to a plurality of pressure relief holes at the outer circumference of the air outlet, the outer part of the body corresponding to the front of the pressure relief hole is provided with a ring joint edge, which is used for fixing and fixing an elastic member; The pressure ring is an inner annular ring having a hollow shape, and a front end of the pressure release ring is provided with a joint portion corresponding to the joint edge of the body, so that the pressure release ring can be combined with the joint edge of the body by the joint portion. The middle of the pressure relief ring corresponds to the drain A thin elastic deformation portion is arranged at the hole, and the elastic deformation portion and the pressure relief hole are normally maintained in a siphon-locking state. When the wind encounters an obstacle, the air outlet speed is slowed and an internal pressure is generated in the cavity to allow compression. The air can be ventilated by the elastic deformation part from the plurality of pressure relief holes through the flow guiding surface of the air outlet hole. The blow gun safety relief device according to claim 1, wherein the inner diameter and the outer diameter of the air outlet of the air outlet tube are gradually reduced inward. The blow gun safety relief device according to claim 1, wherein: the nozzle head is out The rear of the air hole is provided with a front narrow, rear wide conical guide surface corresponding to the shaft hole of the body. The dust blower safety pressure relief device of claim 1, wherein: the air outlet tube is provided with a groove corresponding to the outer edge of the front of the joint, the groove is fastened by a metal buckle, and the body is fixed. The shaft hole corresponds to a receiving groove at the metal buckle. The dust blower safety relief device of claim 1, wherein the outer portion of the air outlet tube is provided with an O-ring, and the shaft hole of the body is provided with a receiving groove corresponding to the O-ring, the O-ring The external system is in a tight fit with the inner wall of the receiving groove. The blow gun safety relief device according to claim 1, wherein: the inner circumference of the front end of the joint is provided with an internal thread, and the body is provided with an external thread corresponding to the internal thread of the joint, so that the internal thread of the joint can be The lock knot is fixed in the external thread of the body, and a plurality of grooves are arranged at the outer circumference of the rear end of the joint as a user for tightening or unscrewing the joint. The blow gun safety relief device according to claim 1, wherein the nozzle head is made of a metal material, and the nozzle head is a narrow front and rear wide cone. The blow gun safety relief device according to claim 1, wherein the body is provided with a slope, a flat surface and a vertical surface in the rear of the pressure relief hole, and the middle of the pressure relief ring corresponds to the pressure relief hole. A thick flange is arranged at the edge, and the flange is provided with a slope corresponding to the inclined surface, and the rear end of the pressure release ring is provided with a thin elastic deformation portion corresponding to the flat surface and the vertical surface, which is usually deformed by the elastic deformation. The part is kept in a siphon blocking state between the pressure relief hole and the flat surface and the vertical surface thereof. When the wind encounters the obstacle, the air outlet speed becomes slow and internal pressure is generated in the cavity, so that the compressed air can pass through the air outlet hole. The flow guiding surface, from a plurality of pressure relief holes, along the oblique surface outwards to open the elastic deformation portion to do the exhaust pressure relief. The blow gun safety relief device according to claim 1, wherein the pressure relief ring can be made of one of rubber or silicone.