KR19990008099U - Air gun with suction and blowing function - Google Patents

Abstract

The present invention relates to a device using compressed air, and to provide an air gun having a suction and blowing function capable of individually performing suction and blowing operations of foreign substances. The air gun has a handle on the lower side and has a suction inlet and an outlet at both ends, a button installed at the front of the handle and for supplying and blocking compressed air to the tube, and assembled on the upper end of the tube Blowing air amount adjusting knob for injecting compressed air to the outside, a fixed nozzle formed in a cylindrical shape along the inner surface of the pipe and having an inclined surface toward the discharge port, coupled to the pipe to move back and forth and the fixed nozzle The inclined surface parallel to the inclined surface of the adjusting nozzle formed along the inner surface, and the lock-nut for fastening along the outer surface of the adjusting nozzle and fixing the adjusting nozzle to the tubular body.

Description

Air gun with suction and blowing function

The present invention relates to a device using compressed air, and more particularly to a multi-purpose air gun that can work intake and blowing (cleaning) of foreign matters and the like using compressed air.

Typically, a device using compressed air includes a vacuum cleaner, a blower (preferably an air gun), a pump, and the like, each having a separate function. That is, vacuum cleaners or air guns are used to remove foreign substances such as dust in various industrial sites and automobile maintenance shops, and pumps and the like are used for oil replacement of cutting oil of machine tools or automobile engines. In addition, the vacuum cleaner and the air gun is used for the chip suction generated during the machining of the machine tool, and various kinds of powder cleaning operations.

However, since the conventional compressed air apparatus has only one of suction and blowing functions, consumers have to purchase two pieces of equipment, that is, a vacuum cleaner and an air gun at the same time. This not only adds cost, but also causes problems that delay work time.

As a conventional technique for solving such a problem, Korean Unexamined Utility Model Publication No. 96-020030 (name: blown vacuum cleaner of vacuum cleaner) (hereinafter referred to as first leading technology). The first prior art forms a single flow path and a plurality of exhaust pipes on the rear wall surface of the sound-absorbing room of the vacuum cleaner, and provides opening and closing means for opening and closing the exhaust pipe, thereby implementing a blow-up cleaning operation without loss of suction power by the electric blower. It is configured to be.

However, the first prior art as described above implements a blower by installing a separate blower in a vacuum cleaner, which not only increases the cost of the product, but also has the difficulty of simultaneously performing suction and blow operations. It is expected.

On the other hand, a device using compressed air of OSAWA product of Japan (hereinafter referred to as "second advanced technology"), preferably an air gun having both suction and blowing functions, is currently available on the market. ) Has the disadvantage of not being able to control. That is, the Japanese OSAWA product is configured by inserting a nozzle into the tube of the air gun, which is a passage through which foreign substances such as dust and chips are sucked, and then locking the cap to fix it, wherein a hole having a diameter of 1.4 mm between the nozzle and the cap ( Six holes are formed, and the flow rate (suction input) of the compressed air is determined through the holes.

The second prior art is to provide a blowing air volume adjusting knob having an injection pipe on the upper end of the tube without having a separate blowing device in the air gun, and has a suction function and a blowing function at the same time to remove foreign substances. Clearly, the problem is solved.

However, the second prior art cannot adjust the strength of suction force because the diameter of the hole that determines the flow rate of the compressed air is always constant and is not constant. . In addition, since the suction function and the blowing function cannot be implemented separately, only a predetermined work can be performed at all times, and in particular, the disadvantage of not being able to perform the blowing cleaning operation is expected.

Accordingly, an object of the present invention is to provide an air gun having a suction and blowing function capable of adjusting the suction force strength of the air gun.

Another object of the present invention is to provide an air gun having a suction function and a blowing function that can individually perform a suction operation and a blowing operation of a foreign substance.

Still another object of the present invention is to provide an air gun capable of simultaneously performing suction and blowing operations.

In order to achieve the above object, the air gun equipped with the suction function and the blowing function of the present invention has a tubular body having a handle on the lower side and an inlet and an outlet on both sides thereof, and is installed in front of the handle and compressed into the tube. A button for supplying and blocking air, a blowing air amount adjusting knob assembled to an upper end of the pipe to blow out the compressed air to the outside, and formed in a cylindrical shape to be assembled along the inner surface of the pipe and having an inclined surface toward the outlet. The nozzle has a fixed nozzle, the adjustment nozzle is coupled to the tubular body moving forward and backward and inclined parallel to the inclined surface of the fixed nozzle along the inner surface, and is fastened along the outer surface of the adjustment nozzle and the adjustment nozzle Characterized in that the lock-nut for fixing to.

1 is a schematic view showing the outer shape of the multi-purpose air gun easy to suction and clean (blowing) foreign matter according to an embodiment of the present invention.

Figure 2 is a cross-sectional view showing the internal configuration of the air gun having a suction and blowing function of the present invention.

Figure 3 is a detailed cross-sectional view showing the configuration of the air supply and shutoff valve portion in the multi-purpose air gun of the present invention.

Figure 4 is a detailed top view showing the configuration of the air blow rate control and blocking valve unit in the multi-purpose air gun of the present invention.

Figure 5 is a perspective view showing the configuration of the suction force intensity control unit of the compressed air in the multi-purpose air gun of the present invention.

6a to 6c is a view showing a flow state of air when inhaling foreign matter using compressed air in the air gun of the present invention.

7a to 7b is a view showing the flow of air when cleaning the foreign matter using the compressed air in the air gun of the present invention.

<Description of the code | symbol about the principal part of drawing>

10: button 14: spool

18: spring 20,44: air passage

22: air inlet 26: cylinder

28: adjusting nozzle 30: fixed nozzle

29a, 32a: graduation 34: lock-nut

40: adjusting knob 48: compressed air supply

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used for the same components, even if displayed on different drawings. In the following description, it should be noted that only parts necessary for understanding the operation according to the present invention are described, and descriptions of other parts will be omitted so as not to obscure the subject matter of the present invention.

Figure 1 shows the appearance of a multi-purpose air gun having a suction function and a blowing function according to an embodiment of the present invention. In the figure, the air gun of the present invention has a gun-type handle 46, the compressed air supply port 48 for connecting the compressed air supplied from the air compressor or the like is formed at the lower end of the handle 46. In addition, a button 10 for supplying and blocking compressed air is assembled at an upper front of the handle 46, and an inlet 100 through which foreign substances such as dust and chips are sucked and discharged at the upper end of the handle 46. And the pipe body 54 having the outlet 200 is integrally connected and assembled. A flexible duct 36 is coupled to the left end of the tubular body 54, and a flexible duct 36 is coupled to the outlet 200 of the tubular body 54, and a pipe 38 is connected to the suction port 100. It is fixedly coupled by). In addition, an air blowing control knob 40 for blowing (injecting) compressed air to the upper end of the tubular body 54 is assembled and assembled by an elbow 60, and a left end of the adjustment knob 40 is provided. The injection pipe 50 is fastened with a nut 58. At this time, the end of the injection pipe 50 is connected to the inside through the pipe 38. Here, the adjustment nozzle (28) for adjusting the strength of the suction force (refers to the velocity of the compressed air flows out of the foreign matter toward the outlet 200 by the compressed air, that is, compressed air) 28 and the inside of the tubular body 54 ) And the fixed nozzle 30 are respectively installed. Finally, the hook 54 is installed on the upper end of the tubular body 54, to facilitate storage of the air gun of the present invention.

2 is a view showing the internal configuration of the air gun that can implement the multi-purpose air gun, preferably suction and blowing operations such as foreign matters individually or simultaneously as described in FIG. Hereinafter, the configuration of the multi-purpose air gun of the present invention will be described in detail with reference to FIGS. 2 to 5.

First, the button 10 for supplying and blocking compressed air is assembled in front of the handle 46 of the air gun, as shown in FIGS. 2 and 3, and in detail, a valve body 12 forming a conduit is provided. It is fitted and installed. At this time, the valve body 12 is assembled by an O-ring (0-ring: 24a), and the spool 14 is assembled by the 0-ring 24b therein. And the button 10 is coupled to the left end (in Figure 3) of the spool 14, the spool 14 is moved back and forth in accordance with the operation of the button 10. In addition, the right end of the spool 14 is formed integrally with the cut-off portion 16 is formed in the center direction, the tapered portion (inclined surface) of the cut-off portion 16 is at the end of the valve body 12 In contact. A spring 18 is installed on the rear surface of the blocking portion 16 of the spool 14 to restore the spool 14, that is, the button 10, to the original position at all times. Where the blocking portion 16 of the spool 14 is located, preferably, the rear of the blocking portion 16 is formed below the air inlet 22 for introducing the compressed air, the spool 14 ), An air passage 20 through the tubular body 54 is formed. That is, the valve body 12 has a hole l2a, and is connected to the air passage 20 above the hole 12a. In other words, the air passage 22, the valve body 12 and the air passage 20 are integrally connected to each other.

In addition, the air passage 20 is connected to the tubular body 54, the fixed nozzle 30 and the adjustment nozzle 28 is located thereon. That is, as shown in FIG. 6B, the cylindrical fixing nozzle 30 is fixedly assembled with a 0-ring along the circumferential surface of the tubular body 54, and the outer circumferential surface of the fixing nozzle 30 is centered. It has a 2nd inclined surface 30a formed by tapping at a predetermined angle. Here, the second inclined surface 30a is formed toward the outlet 200 of the tubular body 54. It becomes parallel with the 1st inclined surface 28a of the adjustment nozzle 28 mentioned later. On one side of the fixed nozzle 30, preferably a cylindrical adjustment nozzle 28 is coupled to the 0-ring toward the side on which the second inclined surface 30a of the fixed nozzle 30 is formed. The inner circumferential surface of the adjustment nozzle 28 is formed with a first inclined surface 28a tapered outward at a predetermined angle, and the first inclined surface 28a moves along the second inclined surface 30a of the fixed nozzle 30. do. In this case, a predetermined space portion 26 is formed between the tubular body 54, the second inclined surface 30a of the fixed nozzle 30, and the first inclined surface 28a of the adjustment nozzle 28, and the space portion 26. ) Is connected to the air passages (30, 44). Here, a thread is formed on the outer circumferential surface of the adjusting nozzle 28, preferably on the left circumferential surface of the end 29 of the adjusting nozzle 28, and the lock-nut 34 and the tube 54 are formed on the screw. ) Is fastened.

That is, as shown in Fig. 5, the adjustment nozzle 28 is formed with an end 29 having a different height, and the end 29 is marked with a scale 29a up to 2 mm in 0.5 mm increments. One side of the end 29 is formed with a chamfer (29b) engraved with an indication scale (29c). On the left side of the end 29, a lock-nut 34 for fastening the adjusting nozzle 28 to the tube 54 is preferably fastened to the thread. In other words, the adjusting nozzle 28 is fixed to the tubular body 54 by the fastening force of the lock-nut 34, and the adjusting nozzle 28 is rotatable when the lock-nut 34 is slightly loosened. It becomes

Further, on the right circumferential surface (radial shape) of the lock-nut 34, a scale 32a of up to 1 mm in 0.1 mm units is marked. Finally, the normal air blowing control knob 40 is assembled to the upper end of the tube 54 is installed.

That is, as shown in FIG. 4, the elbow 60 is coupled to the air passage 44, and the adjustment knob 40 is coupled to one side of the elbow 60. Here, the control knob 40 is provided with a blocking bar 62 to prevent the compressed air is injected to the outside.

Hereinafter, the operation of the multi-purpose air gun of the present invention configured as described above will be described in detail with reference to FIGS. 6 and 7.

First, as shown in FIG. 1, the adjustment nozzle 28 and the adjustment knob 40 provided in the tubular body 54 of the air gun connect the supply part 48 of the air gun to the air compressor in the locked state. Next, when the air compressor is operated, compressed air is supplied to the air inlet part 22 through the supply part 48 as shown in FIG. 6A to fill up to the rear end of the valve body 12. After holding the handle 46 of the air gun and pulling the button 10, the spool 14 is moved to the right (in the drawing), whereby the blocking portion 16 of the spool 14 is the end of the valve body 12 Will fall off. At the same time, the compressed air supplied to the air inlet 22 is introduced into the tubular body 54 through the air passage 20 as shown in FIG. 6B, and is preferably introduced into the space 26. Here, the compressed air introduced through the above process is stopped because the inclined surfaces 28a and 30a of the adjusting nozzle 28 and the fixed nozzle 30 are compressed.

Thereafter, the lock-nut 34 is loosened a little, and then the adjusting nozzle 28 is rotated to loosen the threaded portion. Accordingly, the adjustment nozzle 28 moves toward the outlet 200 of the tubular body 54, and at the same time, the gap between the fixed nozzle 30 and the fixed nozzle 30 gradually opens. That is, as shown in FIG. 6C, the adjusting nozzle 28 is released from the tubular body 54, so that the first inclined surface 28a of the adjusting nozzle 28 and the second inclined surface 30a of the fixed nozzle 30 are removed. A gap is formed between the gaps (a space through which compressed air can flow). At this time, the operator can easily visually check the gap degree by looking at the scale 29a formed on the adjustment nozzle 28 and the scale 32a formed on the lock-nut 34. For example, in FIG. 6C, since the scale indicates 1.5 mm, the operator can know that the gap Gap is formed by 1,5 mm. Thereafter, according to the operation of FIG. 6C, the compressed air is rapidly exited toward the outlet 200 through the gap between the inclined surfaces 28a and 30a. At this time, the gap immediately under the gap, that is, the inside of the boundary between the fixed nozzle 30 and the adjustment nozzle 28 is vacuumed due to the difference in air pressure, the foreign matter such as dust, chips, liquid or powder, etc. inlet 100 Inflow through and exits toward the outlet (200). Next, the lock-nut 34 is locked (ie, fastened) so that the adjustment nozzle 30 is not separated from the tube body 54. Subsequently, the substance exited through the outlet 200 is moved to the liquid container in the case of the foreign matter collection tank or liquid via the duct 36. Thus, the flow rate of the compressed air, preferably the suction force is changed according to the degree of loosening of the adjustment nozzle 28, the operator can adjust the suction force at will according to the purpose of use.

Here, to use the multi-purpose air gun of the present invention as air blowing, first loosen the lock-nut 34 a little again, and then rotate the adjustment nozzle 28 to fasten the tubular body 54. Lock the lock-nut 34. Then, the gap between the first inclined surface 28a of the adjustment nozzle 28 and the second inclined surface 30a of the fixed nozzle 30 is eliminated, and the compressed air exiting toward the outlet 200 is blocked. At this time, the compressed air remains only in the space 26 as shown in FIG. 7A, and at the same time, the compressed air flows into the elbow 60 through the air passage 44 to fill the inside of the adjusting knob 40. Then, when slowly adjusting the knob 40 is injected to the outside through the injection pipe 50 as shown in Figure 7b. At this time, when the injection pipe 50 is directed to the destination is a blow (cleaning). In addition, when the control knob 40 is completely locked, the discharge of compressed air to the injection pipe 50 is also completely blocked. On the contrary, when the control knob 40 is completely released, the discharge of compressed air also increases.

Finally, after releasing the adjusting nozzle 28 as shown in FIG. 6c and then releasing the adjusting knob 40 as shown in FIG. 7b and using an air gun, air blowing and inhalation of foreign substances are made at the same time. Can blow off foreign substances and inhale at the same time.

As described above, the multi-purpose air gun of the present invention can be applied to all industrial sites and maintenance shops such as automobiles equipped with air compressors, and special-purpose special vehicles equipped with other air compressors, thereby broadening the scope of application. In addition, one of the air gun of the present invention to clean the air blowing, suction of foreign matter and pumping operations such as liquid, powder, etc. can be performed simultaneously or separately. In addition, it is possible to supply much cheaper than the industrial vacuum cleaner to reduce the economic burden on the consumer, there is an advantage to prevent environmental pollution. In particular, the air gun of the present invention can adjust the suction force at will, which has an elevated effect that can be removed without regard to the size and type of foreign matter within the diameter of the air gun tube.

In addition, the air gun equipped with the suction function and the blowing function of the present invention can be installed on a GangType CNC lathe tool post or inside of other machine tools to suck chips generated during product processing before falling to the floor. It can also perform pumping operations such as liquid or powder. In addition, it can be used as a vacuum cleaner commonly used in general industrial sites or maintenance shops, such as automobiles, and can collect smoke or gas generated during welding.

Claims (5)

In the air gun, A nozzle for adjusting the suction force is installed inside the tubular body of the air gun, the upper end of the tubular air gun having a suction function and a blowing function, characterized in that the adjusting knob for adjusting the flow rate of the compressed air injected to the outside. The method of claim 1, wherein the nozzle A fixed nozzle formed in a cylindrical shape and assembled along an inner surface of the tubular body and having a second inclined surface toward the outlet; An air gun having suction and blowing functions coupled to the tubular body and moving forward and backward, wherein a first inclined surface parallel to a second inclined surface of the fixed nozzle includes an adjusting nozzle formed along an inner surface thereof. . A tubular body having a handle at the lower side and an inlet and an outlet at both ends; In the air gun which is installed in front of the handle and composed of a button for supplying and blocking the compressed air to the tube, and the blowing air amount adjusting knob for injecting the compressed air to the outside of the upper body, A fixed nozzle formed in a cylindrical shape and assembled along an inner surface of the tubular body and having a second inclined surface toward the outlet; An adjustment nozzle coupled to the tube and moving forward and backward, the first inclined surface being parallel to the second inclined surface of the fixed nozzle along the inner surface; Fastening along the outer surface of the adjustment nozzle, the air gun having a suction and blowing function characterized in that it comprises a lock-nut for fixing the adjustment nozzle to the tubular body. The method of claim 3, wherein a predetermined gap is formed between the first inclined surface of the adjustment nozzle and the second inclined surface of the fixed nozzle as the front / back of the adjustment nozzle is moved, and the compressed air according to the degree of the gap. Air gun with suction and blowing function, characterized in that the flow rate of the conversion. The suction and blowing function according to claim 3 or 4, characterized in that marks on the cross section of the lock-nut and the end circumference of the adjusting nut are marked to indicate the degree of gap between the first and second inclined surfaces, respectively. Air gun with.