TWM500629U - Multipurpose spray gun structure - Google Patents

Description

Multipurpose spray gun structure

This creation relates to a spray gun, especially a multi-purpose spray gun structure that does not reveal residual paint and can be used as a paint spray gun and air gun.

Referring to FIG. 1 , a conventional spray gun structure includes an L-shaped spray gun body 1 , a control member 2 pivotally connected to the outside of the spray gun body 1 , and a fluid container 3 . The spray gun body 1 has a horizontal gun. a tube 4 and a handle 5 located at one end of the barrel 4, the handle 5 is for grasping and grasping the control member 2 with an index finger, the gun body 1 has a hollow flow path 6 inside, and a flow path 6 One end is located at the handle 5, and the handle 5 is connected to a gas input pipe a for guiding a pressurized gas into the flow path 6. The second end of the flow guide 6 is a paint discharge port 7, and the spray gun body 1 A horizontally extending barrel 4 extends vertically with a coating tube 8 that communicates with the flow path 6 and is screwed to a cover 9 by a nut, the cover 9 enclosing the fluid container 3, the fluid The inside of the container 3 is provided with a liquid coating, and the inside of the fluid container 3 is provided with a straw b connected to the coating tube 8. The control member 2 is located between the handle 5 and the coating tube 8 when the hand is grasped. When the handle 5 is taken, the index finger can press the control member 2 to allow the gas to enter the flow path 6, and the high-pressure gas can be ejected from the paint. 7 is ejected, since the high-pressure gas passes through the outlet pipe 8 of the paint, the paint will attract the fluid vessel 3 in upward, through the coating and into the flow tube 8 The road 6 is mixed with the high-pressure gas, and then sprayed out of the paint discharge port 7 to spray the article.

However, the conventional spray gun structure has a considerable distance from the paint pipe 8 due to the paint discharge port 7, so that once the control member 2 is released by hand, the gas is turned into the flow path 6 and stays in the flow path 6. The paint loses the spray force of the high pressure gas, so that the paint remaining in the flow channel 6 loses the spray force of the high pressure gas and leaks out through the paint discharge port 8, which wastes the paint and pollutes the workplace, especially when the flow rate of the sprayed paint is to be reduced. It is not easy to control the output of the gas pressure so that the paint can not be sprayed and dripped in a mist, causing pollution of the ground.

The main purpose of this creation is to solve the conventional structure of the spray gun. Since the paint tube of the output paint has a considerable distance from the paint discharge port, the spray pressure cannot be sprayed when the gas pressure is lowered, or the paint remaining in the flow path when closed. Loss of pressure on the spray, and dripping out causes paint waste and pollution workplace problems.

Another object of the present invention is to provide a multi-purpose spray gun structure that can be used as a paint spray gun and an air gun.

In order to achieve the above object, the present invention discloses a multi-purpose spray gun structure comprising: a gun body, a control unit and a discharge pipe, the gun body having a gas flow passage, a first cavity tube and the first cavity a second cavity tube adjacent to the tube, the gas flow channel is in communication with the first and second lumens and has an air outlet, the first lumen is smaller than the second lumen, and the second lumen is connected to the second lumen The gas port is connected, the control unit has a plug rod assembled in the first cavity tube, a spring in the second cavity tube and a pivotal connection to the gun a plug-in switch on the body, the plug rod has a first end exposed to the outside and abutting the opening and closing switch and a second end which is topped by the spring, the plug sleeve is provided with a control gas by the first The two-tube tube enters the control valve of the first cavity tube, and one end of the discharge tube has an outlet, wherein the outlet is perpendicular to the air outlet of the gun body, and the corner of the outer circumference of the outlet is a rounded corner The discharge pipe is provided with a concave neck, and the gas discharged from the air outlet flows through the rounded corner and the concave neck.

The discharge tube is screwed to an outlet end adjacent to the outlet, and the outlet is located at an end surface of the discharge nozzle, and the concave neck is disposed at an outer circumference of the discharge nozzle.

Wherein, the discharge pipe is screwed to an adjusting nut and a pressing spring is sleeved on the outer circumference of the discharging pipe, one end of the pressing spring is tightly attached to the discharging nozzle, and the other end of the pressing spring is subjected to the adjustment The nut is resisted.

Wherein, the gun body has an extension portion which is connected to the outer wall of the discharge tube in a sheet shape, and a bottom portion of the extension portion is provided with a bottom plate, and the discharge tube is threadedly engaged with the bottom plate, and the discharge tube is further One end is connected to one of a paint bucket and a gas pipe.

Wherein, the top of the paint bucket is provided with a tube body communicating with the outside, and the outer wall of the tube body is provided with a rotatable connecting nut, and the discharge tube is provided with a male thread different from the end of the discharge nozzle. The thread is locked with the connecting nut.

Wherein the screw of the second cavity tube away from the first cavity tube is provided with a screw hole, the screw hole is screwed to a screw, and an inner end surface of the screw is provided with a recess for the spring, the spring is away from the One end of the plug rod cooperates with the recess.

Among them, the gun body has a grip that is grasped by the hand and is hollow inside. The handle is adjacent to the second cavity tube and communicates with the second cavity tube. The handle is integrally connected with the gun body in an oblique direction, so that the hand can grasp and take the opening and closing switch with the index finger to push the plug. a rod located in the grip and connected with a gas pipe for guiding high pressure gas into the second lumen.

Accordingly, according to Bernoulli's law, the airflow ejected from the air outlet flows through the outer circumference of the outlet of the discharge nozzle, and a part of the airflow flows through the concave neck. The angle has a curvature, and the flow rate of the airflow through the rounded corner is greater than the airflow velocity of the concave neck flowing below the guide fillet, resulting in an up and down air pressure, and an upward pushup to the outlet of the discharge nozzle Suction to draw the paint in the paint bucket upwards, and through the discharge pipe and ejected from the outlet.

In this way, when the flow rate of the sprayed paint is lowered or the paint is stopped, that is, when the air pressure in the gas flow path is lowered, the paint in the discharge pipe naturally falls back into the paint bucket, and does not leak out, causing waste and pollution. Workplace problems, when the other end of the discharge pipe is connected to a gas pipe to introduce gas, the creation can be used as an air gun.

(known)

A‧‧‧ gas input pipe

b‧‧‧Sipper

1‧‧‧gun body

2‧‧‧Controls

3‧‧‧ Fluid containers

4‧‧‧ barrel

5‧‧‧Hands

6‧‧‧ flow path

7‧‧‧ Paint spray outlet

8‧‧‧ Paint tube

9‧‧‧ Cover

(this creation)

10‧‧‧ gun body

11‧‧‧ grip

12‧‧‧ gas flow path

121‧‧‧air inlet

122‧‧‧ gas outlet

123‧‧‧ trachea

13‧‧‧First lumen

14‧‧‧second lumen

15‧‧‧ screw holes

16‧‧‧ screws

161‧‧‧ pit

17‧‧ ‧Block

18‧‧‧Extension

181‧‧‧floor

20‧‧‧Control unit

21‧‧‧ plug

211‧‧‧ first end

212‧‧‧ second end

22‧‧‧ Spring

23‧‧‧Opening switch

24‧‧‧Control valve

30‧‧‧Drawing tube

31‧‧‧Outlet

32‧‧‧Export

33‧‧‧

34‧‧‧ concave neck

35‧‧‧Adjustment nut

36‧‧‧Force spring

37‧‧‧ male thread

40‧‧‧ paint bucket

41‧‧‧ tube body

42‧‧‧Connecting nut

43‧‧‧Sipper

50‧‧‧ gas pipeline

Figure 1 is a schematic plan view of a conventional spray gun structure.

Fig. 2 is a combined perspective view of the present embodiment.

Figure 3 is an exploded perspective view of the present embodiment.

4A is a cross-sectional view of the present embodiment.

4B is a partial enlarged view of FIG. 4A.

4C is a schematic view of the operation of FIG. 4A.

FIG. 5 is a schematic diagram of another embodiment of the creation.

The detailed description of the present invention and the technical description are further described in the following examples, but it should be understood that these examples are for illustrative purposes only and are not to be construed as limiting.

Referring to FIG. 2, FIG. 3, FIG. 4A and FIG. 4B, the present invention discloses a multi-purpose spray gun structure comprising: a gun body 10, a control unit 20 and a discharge pipe 30, the gun body 10 having a hand grasping And a hollow grip 11 which is integrally connected with the gun body 10 in an oblique direction. The gun body 10 has a gas flow passage 12, a first cavity tube 13 and adjacent and communicate with the gun body 10. a second lumen 14 of the first lumen 13 , the first lumen 13 communicating with the gas flow conduit 12 and having a smaller diameter than the second lumen 14 , the first lumen 13 , the second lumen 14 An end of the second cavity tube 14 away from the first cavity tube 13 is provided with a screw hole 15 . The screw hole 15 is screwed to a screw 16 , and an inner end of the screw 16 is not collinear. A recess 161 is provided, the grip 11 is connected to the second lumen 14 and the interior of the grip 11 is in communication with the interior of the second lumen 14. The gas flow passage 12 has an air outlet 122 and an air inlet. 121 is located in the grip 11 , the air inlet 121 is connected to a gas pipe 123 to pass gas through the inside of the grip 11 , and then into the second cavity 14 , the gas outlet 122 is located in the gas flow channel 12 The end of the first tube 13 and the second tube 14 has a retaining wall 17 . The gun body 10 has an extension 18 connected to the outer wall of the discharge tube 30 in a sheet shape. The extension 18 A bottom plate 181 is provided at the bottom.

The control unit 20 has a plug stem assembled to the first lumen 13 21 . A spring 22 in the second cavity tube 14 and an opening and closing switch 23 pivotally connected to the gun body 10 , the plug rod 21 having a light exposed to the outside and abutting the opening and closing switch 23 The first end 211 and a second end 212 which is topped by the spring 22, the plug rod 21 is sleeved with a control valve 24 for controlling gas from the second cavity tube 14 into the first cavity tube 13, the control The valve 24 is elastic and is urged against the retaining wall 21 by the spring 22 to abut against the retaining wall 17 . The stop gas enters the first lumen 13 from the second lumen 14 , and the inner end surface of the screw 16 a spring 22, the end of the spring 22 away from the plug rod 21 is engaged with the recess 161, and is positioned by the recess 161. When the grip 11 is grasped by the hand, the index finger can be pressed by the index finger 23 The plunger 21 moves in the direction of the second lumen 14.

One end of the discharge pipe 30 has an outlet 32, wherein the outlet 32 is perpendicular to the air outlet 122 of the gun body 10, and the outer circumference of the outlet 32 is a rounded corner 33, and the discharge pipe 30 A concave neck 34 is provided, and the gas ejected from the air outlet 122 flows through the guide radius 33 and the concave neck 34.

In the embodiment, a discharge nozzle 31 is screwed to the end of the discharge port 122, and the outlet 32 is located at an end surface of the discharge nozzle 31. The concave neck 34 is disposed at the discharge nozzle 31. The outer circumference of the discharge tube 30 is connected to the bottom plate 181. The other end of the discharge tube 30 is connected to a paint bucket 40. The top of the paint bucket 40 is provided with a tube body 41 communicating with the outside. The inside of the pipe body 41 is connected with a suction pipe 43 for sucking the paint inside the paint bucket 40. The outer wall of the pipe body 41 is provided with a rotatable connecting nut 42. The discharge pipe 30 is screwed with an adjusting nut 35 and has a pressing force. The spring 36 is sleeved on the outer circumference of the discharge pipe 30, and the discharge nozzle 31 is screwed to one end of the discharge pipe 30. One end of the pressing spring 36 is tightly connected to the discharge nozzle 31, and the tension spring 36 is fastened. One of the other ends is subject to the tone The nut 35 is resisted, and one end of the discharge pipe 30 different from the nozzle 31 is provided with a male thread 37. The male thread 37 is engaged with the coupling nut 42 such that the airflow discharged from the air outlet 122 is received. The guide fillet 33 of the nozzle 31 is guided by the recessed neck 34 to suck the paint in the paint bucket 40 from the outlet 32.

Referring to FIG. 4A, FIG. 4B, and FIG. 4C, in use, when the hand grasps the gripper 11, the index finger pulls the opening and closing switch 23 to push the stopper rod 21 to move toward the second lumen 14 to drive the rod. The control valve 24 leaves the retaining wall 17 to expose a gap. At this time, the gas having pressure applied from the air tube 123 into the grip 11 passes through the second lumen 14 and enters the first lumen 13 and is guided into The gas flow path 12 is further ejected from the gas outlet 122. According to Bernoulli's law, the airflow ejected from the air outlet 122 flows through the outer circumference of the outlet 32 of the outlet 31, and a portion of the airflow passes through the concave neck 34. The corner 33 has an arc such that the flow rate of the airflow through the guide fillet 33 is greater than the flow velocity of the recessed neck 34 flowing below the guide fillet 33, resulting in unequal upper and lower air pressure, and the outlet 32 to the discharge nozzle 31. A suction force is generated which pushes up the paint in the paint bucket 40 and passes through the discharge pipe 30 and is ejected from the outlet 32.

When the hand is released from the opening and closing switch 23, the returning elastic force of the spring 22 drives the stopper rod 21 to be reset to bring the control valve 24 into close contact with the retaining wall 17 to stop the gas from entering the first cavity tube 13. When the gas port 122 has no gas to attract the paint in the paint bucket 40 to the outlet 32, the paint remaining in the discharge pipe 30 naturally falls back into the paint bucket 40, so as to reduce the flow rate of the sprayed paint or stop the spray paint. When the gas pressure in the gas flow path 12 is lowered, the paint in the discharge pipe 30 naturally falls back to the coating. In the drum 40, there is no dripping, which effectively solves the structure of the spray gun as shown in FIG. 1. When the control member 2 is pulled toward the handle 5 to lower or close the gas pressure, the paint remaining in the flow passage 6 is lost. The spraying of pressure will leak out, causing waste of paint and pollution of workplace problems.

It is worth mentioning that the height of the discharge nozzle 31 can be finely adjusted to control the discharge amount of the paint, and the outlet 32 of the discharge nozzle 31 is higher than the center of the outlet 122. In the case of the line, the discharge flow rate of the paint can be enlarged; on the contrary, when the discharge nozzle 31 is adjusted such that the outlet 32 is lower than the center line of the air outlet 122, the discharge flow rate of the paint in the paint bucket 40 can be reduced, and the adjustment nut 35 can be used. The pressing spring 36 is topped, and the elastic force of the pressing spring 36 is pressed against the discharge nozzle 31 to position the discharge nozzle 31. Therefore, the creation has the advantages of easy to control the discharge flow rate of the paint, and effectively solves the coating. Drip on the ground.

Please refer to FIG. 5 again, which shows that the other end of the discharge pipe 30 is connected to a gas pipe 50 for introducing gas as an air gun. When the operation is as described above, when the hand grasps the grip 11 and pulls with the index finger, The opening and closing switch 23 is configured to push the stopper rod 21 to move toward the second cavity tube 14 to drive the control valve 24 to leave the barrier wall 17 to expose a gap. At this time, the air tube 123 is fed into the grip 11 and has pressure inside. The gas will pass through the second cavity tube 14 and enter the first cavity tube 13 and be guided into the gas flow channel 12, and then ejected by the gas outlet port 122, because the flow rate of the gas flow through the guide fillet 33 is greater than the flow rate below. The airflow velocity of the concave neck 34 causes the upper and lower air pressures to be unequal, and an upward suction force is generated to the outlet 32, so that the gas in the gas delivery pipe 50 passes through the discharge pipe 30 and is ejected from the outlet 32, so the creation can be For the paint spray gun application, it can also be used as the air for spraying gas. Air gun use.

However, the above is only the preferred embodiment of the present invention. When it is not possible to limit the scope of the creation of the creation, that is, the simple equivalent changes and modifications made by the applicant in accordance with the scope of the patent application and the content of the creation description are all It is still covered by this creation patent.

10‧‧‧ gun body

11‧‧‧ grip

122‧‧‧ gas outlet

123‧‧‧ trachea

16‧‧‧ screws

18‧‧‧Extension

181‧‧‧floor

23‧‧‧Opening switch

30‧‧‧Drawing tube

31‧‧‧Outlet

32‧‧‧Export

33‧‧‧

34‧‧‧ concave neck

35‧‧‧Adjustment nut

36‧‧‧Force spring

40‧‧‧ paint bucket

41‧‧‧ tube body

42‧‧‧Connecting nut

Claims (7)

A multi-purpose spray gun structure comprising: a gun body having a gas flow passage therein, a first cavity tube and a second cavity tube adjacent to the first cavity tube, the gas flow path and the first The second cavity tube communicates with an air outlet, the first cavity tube is smaller than the second cavity tube, and the second cavity tube is in communication with an air inlet; a control unit having a first cavity tube is assembled a plug rod, a spring in the second cavity tube and an opening and closing switch pivotally connected to the gun body, the plug rod has a first end exposed to the outside and abutting the opening and closing switch a second end of the spring, the plug sleeve is provided with a control valve for controlling gas from the second lumen into the first lumen; and a discharge tube adjacent to one end of the outlet Having an outlet, the outlet is perpendicular to the air outlet of the gun body, the corner of the outer circumference of the outlet is a rounded corner, the discharge tube is provided with a concave neck, and the gas discharged from the air outlet flows through the Leading the fillet with the concave neck. The multi-purpose spray gun structure according to claim 1, wherein one end of the discharge pipe is screwed to a discharge nozzle, and the outlet is located at an end surface of the discharge nozzle, and the concave neck is disposed at the discharge nozzle. Outer week. The multi-purpose spray gun structure according to claim 2, wherein the discharge pipe is screwed to an adjusting nut and a pressing spring is sleeved on the outer circumference of the discharge pipe, and one end of the pressing spring is tightly closed. The discharge nozzle, the other end of the pressing spring is resisted by the adjusting nut. The multi-purpose spray gun structure according to claim 1, wherein the gun body has an extension portion which is connected to the outer wall of the discharge pipe and which is obliquely inclined in a sheet shape, and the bottom portion of the extension portion A bottom plate is disposed, and the discharge pipe is threadedly coupled to the bottom plate, and the other end of the discharge pipe is connected to one of a paint bucket and a gas pipe. The multi-purpose spray gun structure of claim 2, wherein the top of the paint bucket is provided with a pipe body communicating with the outside, and the outer wall of the pipe body is provided with a rotatable connecting nut, the discharge pipe A male thread is provided at one end different from the discharge nozzle, and the male thread is engaged with the coupling nut. The multi-purpose spray gun structure of claim 1, wherein the second cavity tube is provided with a screw hole at one end of the first cavity tube, the screw hole is screwed to a screw, and an inner side of the screw The end face is provided with a recess for the spring, and the spring is engaged with the recess at an end away from the plug. The multi-purpose spray gun structure according to claim 1, wherein the gun body has a grip that is grasped by the hand and is hollow inside, the grip is adjacent to the second cavity tube and the inside and the second cavity tube are In the same way, the grip is integrally connected with the gun body in an oblique direction, which is convenient for the hand to grasp and press the opening and closing switch with the index finger to push the plug rod. The air inlet is located at the grip and is connected with a gas pipe to guide the high pressure gas. In the second lumen.