Spray gun convenient to control

Abstract

The utility model relates to a spray gun convenient to control in the field of spray guns, which comprises a gun barrel, one end of the gun barrel is provided with a water inlet, the water inlet is screwed with a liquid injection valve, the other end of the gun barrel is provided with an air inlet, the air inlet is connected with an air inlet valve, the end part of the gun barrel is connected with a nozzle, and the nozzle is communicated with the air inlet through an airflow channel. The nozzle is communicated with the water inlet through a liquid channel, the liquid channel is provided with a liquid amount adjusting assembly for controlling the liquid flow amount, a notch is formed in the gun barrel, a control rod is connected to the gun barrel, an air flow control assembly is connected to the air inlet valve, inserting parts which are oppositely arranged are formed on the air inlet valve, and guide grooves are formed in the inner side faces of the inserting parts. The stability of the control rod is further improved due to the arrangement of the inserting part and the guide groove, the operation comfort and efficiency are improved, and therefore the using effect and the spraying effect are improved.

Description

Technical Field

[0001] The utility model relates to the field of spray guns, and particularly relates to a spray gun that is convenient to control. Background Art

[0002] As an efficient and uniform spraying tool, the spray gun is widely used in multiple industries. It includes but is not limited to fields such as surface treatment, cooling, combustion, and oxygen injection. In the automotive industry, the spray gun is used to spray the exterior of cars, such as primer, topcoat, and clear coat, as well as to clean the car surface to remove dirt and residues; in the construction industry, the spray gun is often used to spray walls, ceilings, and other surfaces to quickly and evenly apply paint, clear coat, coatings, and waterproof coatings; in addition, there is also an oxygen injection instrument spray gun, and the oxygen injection instrument belongs to a beauty and skin care instrument. The oxygen injection instrument uses turbine jet and spiral orbit acceleration technologies to spray oxygen at high pressure on the skin, inject oxygen into the basal layer of the skin, accelerate the metabolism of skin cells, supplement the nutrients required by the overall muscle cells, and increase the elasticity and activity of cells.

[0003] There are various types of existing spray guns, but most of them use compressed air as the power source. By generating a very strong negative pressure at the front end of the nozzle through compressed air, the liquid is sucked out of the nozzle, and under the action of the high-speed jet force of the compressed air, the liquid is atomized into fine droplets and evenly sprayed on the surface.

[0004] However, although the existing spray guns are widely used in multiple fields, there are still some defects. First, since the spray gun needs to adjust the control flow rates of the liquid and gas during the spraying process, the existing spray guns usually control the gas discharge by pressing down the operating rod during spraying, but its control is prone to failure, resulting in a higher operation difficulty, and the control stability of the liquid and gas during the spraying process of the spray gun is poor, resulting in a poor spraying quality, affecting the use and spraying effect. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the above defects and provide a spray gun that is convenient to control, so as to solve the technical problem that the flow rate stability of the gas controlled by the pressing-down control rod of the spray gun in the above background art is poor, affecting the use and spraying effect.

[0006] The purpose of the utility model is achieved in the following way:

[0007] A spray gun that is convenient to control, including a gun rod. One end of the gun rod is provided with a water inlet, and a liquid injection valve is screwed on the water inlet. The other end of the gun rod is provided with an air inlet, and an air inlet valve is connected to the air inlet. The end of the gun rod is connected with a nozzle. The nozzle is communicated with the air inlet through an air flow channel, and the nozzle is communicated with the water inlet through a liquid channel. A liquid volume adjustment component for controlling the liquid flow rate is arranged in the liquid channel. A notch is arranged on the gun rod, and a control rod is connected to the gun rod. One end of the control rod is exposed outside the notch. The control rod is connected with the liquid volume adjustment component and can control the liquid flow rate of the nozzle through the liquid volume adjustment component. An air flow control component is connected to the air inlet valve. One end of the control rod passes through the gun rod and extends towards the air inlet valve, and is connected with a pressing rod for controlling the air flow control component through a rotating shaft. Oppositely arranged inserting parts are formed on the air inlet valve, and a guiding groove is opened on the inner side surface of the inserting part and extends towards the air inlet valve. The end of the rotating shaft extends towards the guiding groove and is connected with the guiding groove.

[0008] Further in the above description, the liquid volume adjustment component includes a tail rod, a tightening shaft, an adjusting nut and an adjusting shaft. One end of the tail rod is coaxially connected with the end of the gun rod far from the nozzle through a screw sleeve. The adjusting shaft is installed at the other end of the tail rod. The tightening shaft is arranged in the tail rod, and one end of the tightening shaft passes through the gun rod and abuts against the control rod. The other end of the tightening shaft is connected with the adjusting nut and abuts against the end of the adjusting rod through the adjusting nut. A spray gun needle is connected in the tightening shaft, and one end of the spray gun needle passes through the gun rod and extends towards the nozzle. By adjusting the tail rod and the adjusting nut, the distance between the tightening shaft and the control rod can be adjusted, so as to drive the spray gun needle through the control rod to control the liquid flow rate of the nozzle.

[0009] Further in the above description, an adjusting plate is arranged on the control rod, a clamping notch is opened on the adjusting plate, and the adjusting plate is connected with the end of the tightening shaft through the clamping notch. One end of the screw sleeve close to the tail rod is connected with an adjusting sleeve, and a liquid volume reset spring is sleeved on the tightening shaft. The liquid volume reset spring is arranged in the adjusting sleeve.

[0010] The initial state of the control rod is a sealed state. When the control rod is toggled, the liquid volume reset spring is compressed, so that the spray gun needle opens the nozzle, and thus the liquid can flow out through the liquid channel. When the control rod is released, the liquid volume reset spring resets, and the end of the spray gun needle seals with the nozzle, so that the liquid is sealed in the liquid channel.

[0011] Further in the above description, an air inlet cavity communicated with the air flow channel is arranged on the air inlet valve. The air flow control component includes an air inlet rod, an air flow needle, a mounting block and an air flow reset spring. The air inlet rod is threadedly connected with the air inlet valve. The mounting block is installed in the cavity of the air inlet rod. The air flow needle is installed on the mounting block, and one end of the air flow needle extends towards the air inlet valve and contacts with the pressing rod. The air flow reset spring is sleeved on the air flow needle. An air inlet end is formed at the end of the air inlet rod close to the air inlet valve, and a through hole communicated with the air inlet valve is opened on the air inlet end.

[0012] The cavity of the intake rod is connected to the intake chamber by an air flow needle. When the control rod is pressed down, the control rod drives the pressing rod to press down the air flow needle, and the cavity of the intake rod is connected to the intake chamber, enabling the external air source connected to the intake rod to flow into the air flow channel, improving the control effect and usage effect of the control rod.

[0013] Further, in the above description, a sealing end is formed on the intake valve. A first sealing ring is sleeved inside the sealing end. The end of the pressing rod passes through the first sealing ring and contacts the end of the air flow needle. A second sealing ring is connected to the end of the air flow needle passing through the intake end. By providing the sealing end, the first sealing ring, and the second sealing ring, the gas tightness is improved to prevent leakage. The provided sealing end facilitates the pressing down or rising of the pressing rod along the connection hole on the sealing end, improving the stability and reliability of use.

[0014] Further, in the above description, a liquid spraying chamber communicating with the liquid channel is formed inside the nozzle, and a gas jetting chamber communicating with the air flow channel is formed inside the nozzle. The outside of the nozzle is connected with a horn-shaped nozzle through a fixing nut.

[0015] Further, in the above description, a control block is snap-connected to the notch. A clamping block for clamping the control rod is arranged inside the control block, and a control groove is formed at intervals by the clamping block.

[0016] The control block is snap-connected to the notch. When it is toggled to the corresponding control groove, the liquid channel is connected, and the corresponding liquid flow rate can be controlled by toggling to the corresponding control groove. Only by pressing the control rod can the connection of the air flow be controlled, thereby improving the convenience and stability of control.

[0017] Further, in the above description, a liquid storage pot is connected to the liquid injection valve.

[0018] The beneficial effects of the present utility model are as follows: A liquid volume adjustment component is arranged in the liquid channel and is connected to the liquid volume adjustment component through the control rod. When the control rod is driven to toggle under the action of the rotating shaft, the control rod can control the connection of the liquid channel, thereby controlling the liquid flow rate, enabling the user to flexibly adjust the liquid flow rate according to different working requirements. Through the guiding groove provided on the insertion part, the end of the rotating shaft is connected to the guiding groove. When the control rod drives the pressing rod to press down, the rotating shaft can move along the guiding groove, further improving the stability and reliability of use. The pressing rod on the control rod drives the air flow control component to control the connection of the air flow channel, thereby adjusting the flow rate and pressure of the air flow through a pressing action. The provided insertion part and guiding groove further improve the stability of the control rod, and the liquid flow rate can be controlled under the rotation of the toggled control rod, improving the comfort and efficiency of operation, thereby improving the usage effect and spraying effect. Description of the Drawings

[0019] Figure 1 is the perspective view of this embodiment;

[0020] Figure 2 is the exploded view of this embodiment;

[0021] Figure 3 is the plane cross-sectional view of this embodiment;

[0022] Figure 4 is the schematic diagram of the internal structure of this embodiment;

[0023] Figure 5 is the front view of this embodiment;

[0024] Figure 6 is Figure 5 the cross-sectional view of A-A in

[0025] The reference numerals in the figure are respectively: 1 - gun barrel, 2 - liquid injection valve, 3 - air inlet valve, 4 - nozzle, 5 - air flow channel, 6 - liquid channel, 7 - notch, 8 - control rod, 9 - rotating shaft, 10 - pressing rod, 11 - insertion part, 12 - guiding groove, 13 - adjusting plate, 14 - adjusting sleeve, 15 - liquid volume return spring, 16 - air inlet end, 17 - through hole, 18 - sealing end, 19 - first sealing ring, 20 - second sealing ring, 21 - control block, 22 - clamping block, 23 - control groove, 24 - liquid storage pot;

[0026] 100 - liquid volume adjustment assembly, 101 - tail rod, 102 - tensioning shaft, 103 - adjusting nut, 104 - adjusting shaft, 105 - screw sleeve, 106 - spray gun needle;

[0027] 200 - air flow control assembly, 201 - air inlet rod, 202 - air flow needle, 203 - mounting block, 204 - air flow return spring. Detailed implementation manners

[0028] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0029] In this embodiment, referring to Figures 1-6, A spray gun that is easy to control in its specific implementation includes a gun rod 1. One end of the gun rod 1 is provided with a water inlet, and a liquid injection valve 2 is screwed on the water inlet. The other end of the gun rod 1 is provided with an air inlet, and an air inlet valve 3 is connected to the air inlet. The end of the gun rod 1 is connected to a nozzle 4. The nozzle 4 is communicated with the air inlet through an air flow channel 5, and the nozzle 4 is communicated with the water inlet through a liquid channel 6. The liquid channel 6 is provided with a liquid volume adjustment component 100 for controlling the liquid flow rate. A notch 7 is provided on the gun rod 1, and a control rod 8 is connected to the gun rod 1. One end of the control rod 8 is exposed outside the notch 7. The control rod 8 is connected to the liquid volume adjustment component 100 and can control the liquid flow rate of the nozzle 4 through the liquid volume adjustment component 100. An air flow control component 200 is connected to the air inlet valve 3. One end of the control rod 8 passes through the gun rod 1 and extends towards the air inlet valve 3, and is connected to a pressure rod 10 for controlling the air flow control component 200 through a rotating shaft 9. Oppositely arranged insertion parts 11 are formed on the air inlet valve 3, and a guiding groove 12 is formed on the inner side surface of the insertion part 11. The guiding groove 12 extends towards the air inlet valve 3. The end of the rotating shaft 9 extends towards the guiding groove 12 and is connected to the guiding groove 12.

[0030] The liquid volume adjustment component 100 includes a tail rod 101, a tensioning shaft 102, an adjusting nut 103, and an adjusting shaft 104. One end of the tail rod 101 is coaxially connected to the end of the gun rod 1 away from the nozzle 4 through a screw sleeve 105. The adjusting shaft 104 is installed at the other end of the tail rod 101. The tensioning shaft 102 is arranged inside the tail rod 101, and one end of the tensioning shaft 102 passes through the gun rod 1 and abuts against the control rod 8. The other end of the tensioning shaft 102 is connected to the adjusting nut 103 and abuts against the end of the adjusting rod through the adjusting nut 103. A spray gun needle 106 is connected inside the tensioning shaft 102. One end of the spray gun needle 106 passes through the gun rod 1 and extends towards the nozzle 4. By adjusting the tail rod 101 and the adjusting nut 103, the distance of the tensioning shaft 102 relative to the control rod 8 can be adjusted, so as to drive the spray gun needle 106 through the control rod 8 to control the liquid flow rate of the nozzle 4.

[0031] An adjusting plate 13 is provided on the control rod 8. A bayonet is formed on the adjusting plate 13 and is connected to the end of the tensioning shaft 102 through the bayonet. One end of the screw sleeve 105 close to the tail rod 101 is connected to an adjusting sleeve 14. A liquid volume return spring 15 is sleeved on the tensioning shaft 102. The liquid volume return spring 15 is arranged inside the adjusting sleeve 14.

[0032] The initial state of the control rod 8 is a sealed state. When the control rod 8 is toggled, the liquid volume return spring 15 is compressed, so that the spray gun needle 106 opens the nozzle 4, so that the liquid can flow out through the liquid channel 6. When the control rod 8 is released, the liquid volume return spring 15 is reset, and the end of the spray gun needle 106 is sealed with the nozzle 4, so that the liquid is sealed in the liquid channel 6.

[0033] An intake cavity communicating with the air flow passage 5 is provided on the intake valve 3. The air flow control assembly 200 includes an intake rod 201, an air flow needle 202, a mounting block 203 and an air flow return spring 204. The intake rod 201 is threadedly connected to the intake valve 3. The mounting block 203 is installed in the cavity of the intake rod 201. The air flow needle 202 is installed on the mounting block 203, and one end of the air flow needle 202 extends towards the intake valve 3 and contacts the pressure rod 10. The air flow return spring 204 is sleeved on the air flow needle 202. An intake end 16 is formed at the end of the intake rod 201 close to the intake valve 3, and a through hole 17 communicating with the intake valve 3 is provided on the intake end 16.

[0034] The communication between the cavity of the intake rod 201 and the intake cavity is controlled by the air flow needle 202. When the control rod 8 is pressed down, the control rod 8 drives the pressure rod 10 to press down the air flow needle 202, and the cavity of the intake rod 201 communicates with the intake cavity, so that the external air source connected to the intake rod 201 can flow into the air flow passage 5, improving the control effect and use effect of the control rod 8.

[0035] A sealing end 18 is formed on the intake valve 3. A first sealing ring 19 is sleeved inside the sealing end 18. The end of the pressure rod 10 passes through the first sealing ring 19 and contacts the end of the air flow needle 202. A second sealing ring 20 is connected to the end of the air flow needle 202 passing through the intake end 16. By providing the sealing end 18, the first sealing ring 19 and the second sealing ring 20, the air tightness is improved to prevent leakage. The provided sealing end 18 facilitates the downward or upward pressing of the pressure rod 10 along the connection hole on the sealing end 18, improving the stability and reliability of use.

[0036] A liquid spraying cavity communicating with the liquid passage 6 is formed inside the nozzle 4. A gas jetting cavity communicating with the air flow passage 5 is formed inside the nozzle 4. The outside of the nozzle 4 is connected with a horn-shaped nozzle through a fixing nut.

[0037] A control block 21 is snap-connected to the notch 7. A clamping block 22 for clamping the control rod 8 is arranged inside the control block 21, and a control groove 23 is formed at intervals through the clamping block 22.

[0038] When the control block 21 is snap-connected to the notch 7 and toggled to the corresponding control groove 23, the liquid passage 6 communicates, and the corresponding liquid flow rate can be controlled by toggling to the corresponding control groove 23. Only by pressing the control rod 8 to control the air flow communication, the convenience and stability of control are improved.

[0039] A liquid storage pot 24 is connected to the liquid injection valve 2.

[0040] The specific working principle in this embodiment is as follows: The intake valve 3 is snap-connected to the intake port of the gun rod 1. The end of the intake rod 201 is connected to the intake valve 3 by threads, and a sealing gasket is installed at the connection between the intake rod 201 and the intake valve 3, so that the cavity of the intake rod 201 is communicated with the intake cavity of the intake valve 3 through the intake end 16. The end of the control rod 8 is connected to the pressure rod 10 through the rotating shaft 9, and both ends of the rotating shaft 9 are abutted against the guiding grooves 12 of the insertion part 11. The adjusting plate 13 on the side of the control rod 8 is connected to the end of the tightening shaft 102;

[0041] When the driving control rod 8 is toggled under the action of the rotating shaft 9, the control rod 8 can control the tightening shaft 102 to drive the spray gun needle 106 to control the communication between the nozzle 4 and the liquid channel 6, thereby controlling the liquid flow rate, enabling the user to flexibly adjust the liquid flow rate according to different working requirements;

[0042] When the control rod 8 drives the pressure rod 10 to press down, the rotating shaft 9 can move stably along the guiding groove 12, so that the control rod 8 drives the pressure rod 10 to drive the air flow needle 202 to control the communication of the air flow channel 5, thereby adjusting the flow rate and pressure of the air flow through the pressing action. The provided insertion part 11 and guiding groove 12 further improve the stability of the control rod 8, and the flow rate of the liquid can be controlled under the rotation of the toggled control rod 8, improving the comfort and efficiency of operation, and thus improving the use effect and spraying effect.

[0043] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Although the present invention is disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, when making some changes or modifications using the above-disclosed technical content as equivalent change equivalent embodiments, but as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical meaning of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A spray gun that is easy to control, comprising a gun rod, one end of which is provided with a water inlet, a liquid injection valve is screwed on the water inlet, the other end of the gun rod is provided with an air inlet, the air inlet is connected to the air inlet valve, and the end of the gun rod is connected to a nozzle, characterized in that: The nozzle is connected to the air inlet through an air flow channel, and the nozzle is connected to the water inlet through a liquid channel. The liquid channel is provided with a liquid volume regulating assembly for controlling the liquid flow rate. A notch is provided on the gun rod, and a control rod is connected to the gun rod. One end of the control rod is exposed outside the notch. The control rod is connected to the liquid volume regulating assembly and can control the liquid flow of the nozzle through the liquid volume regulating assembly. An air flow control assembly is connected to the air intake valve. One end of the control rod extends through the gun rod to the air intake valve, and is connected to a pressure rod for controlling the air flow control assembly through a rotating shaft. A relatively arranged plug-in portion is formed on the air intake valve, and a guide groove is provided on the inner side surface of the plug-in portion. The guide groove extends toward the air intake valve, and the end of the rotating shaft extends toward the guide groove and is connected to the guide groove.

2. A spray gun that is easy to control according to claim 1, characterized in that: The liquid volume adjustment assembly includes a tail rod, a tension shaft, an adjusting nut and an adjusting shaft. One end of the tail rod is coaxially connected to the end of the gun rod away from the nozzle through a threaded sleeve. The adjusting shaft is installed at the other end of the tail rod. The tension shaft is arranged in the tail rod, and one end of the tension shaft passes through the gun rod and abuts against the control rod. The other end of the tension shaft is connected to the adjusting nut and abuts against the end of the adjusting rod through the adjusting nut. A spray gun needle is connected in the tension shaft, and one end of the spray gun needle passes through the gun rod and extends toward the nozzle.

3. A spray gun that is easy to control according to claim 2, characterized in that: The control rod is provided with an adjustment plate, which is provided with a bayonet and connected to the end of the tensioning shaft through the bayonet. The end of the screw sleeve close to the tail rod is connected with an adjustment sleeve, and the tensioning shaft is sleeved with a liquid reset spring, which is arranged in the adjustment sleeve.

4. A spray gun that is easy to control according to claim 1, characterized in that: The intake valve is provided with an intake cavity connected with the airflow channel. The airflow control assembly includes an intake rod, an airflow needle, a mounting block and an airflow return spring. The intake rod is threadedly connected with the intake valve. The mounting block is mounted in the cavity of the intake rod. The airflow needle is mounted on the mounting block. One end of the airflow needle extends toward the intake valve and contacts with the pressure rod. The airflow return spring is sleeved on the airflow needle. An intake end is formed at the end of the intake rod close to the intake valve. A through hole connected with the intake valve is provided on the intake end.

5. A spray gun that is easy to control according to claim 4, characterized in that: The air inlet valve is provided with a sealing end, a first sealing ring is sleeved in the sealing end, the end of the pressure rod passes through the first sealing ring and contacts the end of the air flow needle, and the end of the air flow needle passes through the air inlet end and is connected to a second sealing ring.

6. A spray gun that is easy to control according to any one of claims 1 to 5, characterized in that: The nozzle has a liquid spraying cavity communicated with the liquid channel formed inside, an air jet cavity communicated with the air flow channel formed inside, and a trumpet nozzle is connected to the outside of the nozzle via a fixing nut.

7. A spray gun that is easy to control according to any one of claims 1 to 5, characterized in that: The notch is buckled with a control block, a clamping block capable of clamping the control rod is arranged inside the control block, and a control groove is formed by the clamping block.

8. A spray gun that is easy to control according to any one of claims 1 to 5, characterized in that: The liquid injection valve is connected with a liquid storage pot.

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