A spray gun

Abstract

The present application provides a kind of spray gun, belong to the technical field of spray gun equipment, comprising: gun body, it includes gun body and the gun handle being connected with the gun body, the gun body is provided with nozzle and control cavity, the gun handle is provided with coating cavity, the control cavity is communicated with the coating cavity, the nozzle can be communicated with the control cavity;Control assembly, the control assembly can be moved to closed position or open position, when the control assembly moves to the open position, the control assembly is away from the nozzle so that coating is sprayed from the nozzle, when the control assembly moves to the closed position, the control assembly blocks the nozzle so as to block coating and spray.The beneficial effects of the present application: the present application only needs to set up one coating cavity, coating cavity connects high pressure pump, without additional connection high pressure gas can be opened or closed by control assembly coating and spray, greatly simplify the internal structure of spray gun, it is also more convenient when using.

Description

Technical Field

[0001] This invention belongs to the technical field of spray gun equipment, and specifically relates to a spray gun. Background Technology

[0002] A spray gun is a device that uses pressure to spray paint or other liquids.

[0003] Existing spray guns typically have a material tank connected to the bottom or top, which is filled with paint. The other end of the spray gun is connected to high-pressure air. The flow of high-pressure air creates a local vacuum, which draws the paint from the material tank into the nozzle, and finally sprays the paint out from the nozzle.

[0004] The existing spray gun has a complex structure, requiring separate connections to compressed air and a material tank, making it very cumbersome to use. Therefore, it has significant room for improvement. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by proposing a spray gun.

[0006] The objective of this invention can be achieved through the following technical solution: a spray gun, comprising:

[0007] The gun body includes a gun body and a gun handle connected to the gun body. The gun body is provided with a nozzle and a control chamber. The gun handle is provided with a paint chamber for filling paint. The control chamber is connected to the paint chamber. The nozzle is connected to the control chamber.

[0008] A control component is movably disposed in the control cavity. The control component can be moved to a closed position or an open position. When the control component is moved to the open position, the control component moves away from the nozzle, thereby causing the paint to be sprayed out from the nozzle. When the control component is moved to the closed position, the control component blocks the nozzle, thereby blocking the paint from being sprayed out.

[0009] Preferably, the control cavity includes a first control cavity and a second control cavity disposed adjacent to each other. The first control cavity communicates with the coating cavity. The control assembly includes a plug, a connecting rod, and a spring seat. The plug is linked to the connecting rod, and the connecting rod is linked to the spring seat. The plug is disposed in the first control cavity. One end of the connecting rod is disposed in the first control cavity, and the other end of the connecting rod is disposed in the second control cavity. The spring seat is disposed in the second control cavity. The control assembly also includes a trigger, a traction pin, and a gun rear cover. The trigger is hinged to the gun body. The traction pin is movably connected to the gun body. The gun rear cover is linked to the traction pin, the traction pin is linked to the trigger, and the spring seat is linked to the gun rear cover.

[0010] Preferably, the second control cavity is further provided with a spring placement seat and a reset spring for resetting the control component. The reset spring is sleeved on the spring seat, one end of the reset spring is in contact with the spring placement seat, and the other end of the reset spring is in contact with the spring seat.

[0011] Preferably, it further includes a sealing assembly for preventing paint leakage from the first control cavity to the second control cavity. The sealing assembly is located in the second control cavity, and the connecting rod passes through the sealing assembly. The sealing assembly includes a spring washer, a sealing sleeve, a sealing seat, an O-ring, and a limiting seat. The spring washer is in contact with the gun body, the sealing sleeve is in contact with the spring washer, the sealing seat is in contact with the sealing sleeve, the limiting seat is in contact with the sealing seat and is threadedly connected to the gun body, and the O-ring is fitted onto the sealing seat.

[0012] Preferably, the limiting seat is provided with a hexagonal end, and the spring seat is provided with a hexagonal hole. The hexagonal end is connected to the hexagonal hole so that the spring seat can rotate the limiting seat.

[0013] Preferably, it also includes a nozzle insert disposed between the nozzle and the plug.

[0014] Preferably, the device further includes a paint connector, a filter element, and a filter spring. The end of the paint connector is disposed within the paint cavity and is threadedly connected to the gun handle. One end of the filter element is in contact with the gun handle, and one end of the filter spring is in contact with the other end of the filter element. The other end of the filter spring is in contact with the paint connector. The paint cavity is connected to the control cavity through the filter element. The filter element has a filter cavity that is connected to the control cavity. The peripheral surface of the filter element has a spiral groove, and the spiral groove has several through holes for allowing paint to flow into the filter cavity.

[0015] Preferably, the gun handle is provided with a first locking part, and the gun body is provided with a second locking part. The first locking part and the second locking part are connected so that the gun handle will not rotate relative to the gun body.

[0016] Preferably, the trigger is further provided with a locking assembly, which includes a knob and a locking pin. The knob is rotatably connected to the trigger, and the locking pin is linked to the knob. The knob can rotate the locking pin to engage with the gun handle, thereby locking the trigger.

[0017] Preferably, a sealing ring is also provided inside the gun handle to prevent the gun handle from falling off.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. This spray gun only needs to be set up with one paint chamber, which is connected to a high-pressure pump. There is no need to connect to a separate high-pressure gas supply. The paint spraying can be turned on or off by the control component, which greatly simplifies the internal structure of the spray gun and makes it more convenient to use.

[0020] 2. When the plug is set to a sphere, the sealing effect of the nozzle is the best. The sphere and the nozzle are in line contact, and line contact is a more stable sealing method than surface contact.

[0021] 3. The control components include a trigger, a traction pin, a gun rear cover, a spring seat, a connecting rod, and a plug. These components are connected in sequence, so the user only needs to pull the trigger to control the plug to move away from the nozzle, thereby allowing the paint to be sprayed out of the nozzle. This control structure is very ingenious and simple.

[0022] 4. The second control chamber is equipped with a reset spring. The reset spring can reset the control component to the closed position, and the reset spring is always in a compressed state. This will continuously apply elastic force to the control component, so that the plug is firmly sealed at the nozzle.

[0023] 5. A sealing component is provided in the second control chamber. The sealing component can prevent the paint in the first control chamber from leaking into the second control chamber, so that the paint can only be ejected from the nozzle.

[0024] 6. The limiting seat is provided with a hexagonal end, and the spring seat is provided with a hexagonal hole. The hexagonal end can be connected to the hexagonal hole. In this way, during actual assembly, the position of the limiting seat can be adjusted by simply turning the spring seat, thereby adjusting the tightness of the seal, which is very convenient.

[0025] 7. The handle and the outside of the gun body are equipped with protective sleeves to prevent damage to the spray gun during use. In addition, a hook is provided at the top of the trigger sleeve, which makes it easy to move the gun by simply holding the hook. When not in use, the spray gun can also be hung on a nail or protruding object using the hook, which is very practical.

[0026] 8. The sealing and control components of this spray gun are designed as separate units. This means the seals in the first and second control chambers are controlled separately from the nozzle seal. Pulling the trigger will not affect the seal between the first and second control chambers. This design ensures that misalignment of the sealing component will not affect the nozzle seal. In contrast, existing technologies use an integrated sealing and control component, which means that any deviation in the concentricity of the sealing component will lead to nozzle leakage.

[0027] 9. The coating joint of this application, while ensuring a seal, not only allows for easy rotation but also prevents the pipes from getting tangled during rotation.

[0028] 10. The filter element is designed as a long column, which greatly increases the filtration area, thus enabling more thorough filtration and resulting in better filtration performance.

[0029] 11. The gun handle is provided with a first locking part, and the gun body is provided with a second locking part. After the first locking part and the second locking part are connected, the gun handle will not rotate. The structure is very ingenious and simple.

[0030] 12. The locking pin can be rotated to... Figure 1 As shown in the image, the locking pin is in contact with the gun body, and the trigger cannot be pulled in this position. When the spray gun is not in use, the locking pin can be rotated to the position shown in the image. Figure 1 The location shown greatly increases the safety of use.

[0031] 13. The gun handle is fitted outside the paint cavity and is fixed in place by a sealing ring alone. No other additional fixing parts such as screws are needed. This fixing method is very ingenious and greatly simplifies the overall structure. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the control components of the spray gun of the present invention in the closed position.

[0033] Figure 2 This is a schematic diagram of the control components of the spray gun of the present invention in the open position.

[0034] Figure 3 This is a schematic diagram of the spray gun of the present invention.

[0035] Figure 4 This is an exploded view of the spray gun of the present invention.

[0036] Figure 5 for Figure 1 Enlarged view of part A.

[0037] Figure 6 This is a schematic diagram of the spring seat of the present invention.

[0038] Figure 7 This is a schematic diagram of the limiting seat of the present invention.

[0039] Figure 8 This is a schematic diagram of the structure of the filter element of the present invention.

[0040] Figure 9 This is a schematic diagram of the gun handle of the present invention.

[0041] Figure 10 This is a schematic diagram of the gun body of the present invention.

[0042] In the diagram, 100 is the gun body; 110 is the gun barrel; 111 is the nozzle; 112 is the second locking part; 120 is the control chamber; 121 is the first control chamber; 122 is the second control chamber; 130 is the gun handle; 131 is the coating chamber; 132 is the first locking part; 133 is the sealing ring; 200 is the control assembly; 210 is the plug; 220 is the connecting rod; 230 is the spring seat; 231 is the hexagonal hole; 240 is the trigger; 250 is the traction pin; 260 is the gun rear cover; 30 is the gun rear cover. 0. Spring holder; 400. Return spring; 500. Sealing assembly; 510. Spring washer; 520. Sealing sleeve; 530. Sealing seat; 540. O-ring; 550. Limiting seat; 551. Hexagonal end; 600. Nozzle insert; 700. Paint connector; 800. Filter element; 810. Filter chamber; 820. Spiral groove; 821. Through hole; 900. Filter spring; 1000. Locking assembly; 1100. Knob; 1200. Locking pin. Detailed Implementation

[0043] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0044] like Figure 1 , Figure 2 , Figure 4 As shown, a spray gun includes a gun body 100 and a control component 200. The gun body 100 is the outer shell of the spray gun, and the control component 200 is used to turn on or off the spraying of paint.

[0045] Specifically, the gun body 100 includes a gun body 110 and a gun handle 130. The gun handle 130 and the gun body 110 can be integrally formed. A nozzle 111 is provided at the end of the gun body 110. A control cavity 120 is provided inside the gun body 110, and a coating cavity 131 is provided inside the gun handle 130. The control cavity 120 communicates with the coating cavity 131, and the nozzle 111 can communicate with the control cavity 120. A control component 200 is movably disposed in the control cavity 120, and the control component 200 can be moved to a closed position (e.g., Figure 1 (as shown) or the opening location (such as) Figure 2 As shown, when the control component 200 moves to the open position, the control component 200 moves away from the nozzle 111. At this time, the nozzle 111 is connected to the control cavity 120, so that the paint can be sprayed out from the nozzle 111. When the control component 200 moves to the closed position, the control component 200 blocks the nozzle 111. At this time, the nozzle 111 is not connected to the control cavity 120, so as to block the paint from being sprayed out.

[0046] It should be explained in detail that the paint chamber 131 is used to connect to a high-pressure pump. The high-pressure pump can fill the entire paint chamber 131 and the control chamber 120 with paint. At this time, it is only necessary to move the control component 200 to the open position (e.g., Figure 2 (As shown) the paint can then be sprayed from nozzle 111, moving control component 200 to the closed position (e.g.) Figure 1 As shown, the control component 200 can block the nozzle 111, thereby preventing the paint from being sprayed out.

[0047] It should be noted that this spray gun only needs to be equipped with a paint chamber 131, which is connected to a high-pressure pump. There is no need to connect to a high-pressure gas separately. The paint spraying can be turned on or off by the control component 200, which greatly simplifies the internal structure of the spray gun and makes it more convenient to use.

[0048] like Figure 1 , Figure 2 , Figure 4 As shown, based on the above embodiment, the control cavity 120 includes a first control cavity 121 and a second control cavity 122, which are arranged adjacent to each other. The first control cavity 121 communicates with the coating cavity 131. Furthermore, the control assembly 200 includes a plug 210, a connecting rod 220, and a spring seat 230. The plug 210 is used to seal the nozzle 111, and the plug 210 is linked to the connecting rod 220, which is also linked to the spring seat 230.

[0049] Specifically, the plug 210 and the connecting rod 220 are fixedly connected, which can be achieved by welding. The connecting rod 220 passes through the spring seat 230, and the two can be fixedly connected by a tight fit. Alternatively, the connecting rod 220 and the spring seat 230 can be connected by threads. In this way, the plug 210, the connecting rod 220, and the spring seat 230 are linked together. It should also be noted that, as Figure 1 , Figure 2 As shown, the plug 210 is disposed in the first control cavity 121, one end of the connecting rod 220 is disposed in the first control cavity 121, and the other end of the connecting rod 220 is disposed in the second control cavity 122, and the spring seat 230 is disposed in the second control cavity 122.

[0050] Preferably, the plug 210 used in this embodiment is a sphere, but other shapes and structures that can block the nozzle 111, such as cuboids and cones, can also be used.

[0051] It should be noted that the sealing effect of the nozzle 111 is best when the plug 210 is set as a sphere. The sphere and the nozzle 111 are in line contact, and line contact is a more stable sealing method than surface contact.

[0052] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, based on the above-described embodiment, the control component 200 also includes a trigger 240, a traction pin 250, and a gun rear cover 260. The user controls the movement of the control component 200 by pulling the trigger 240.

[0053] Specifically, the trigger 240 is hinged to the receiver 110, the pull pin 250 is mounted on the receiver 110 and can move on the receiver 110, and the rear cover 260 is movably mounted at the end of the receiver 110. One end of the pull pin 250 is in contact with the trigger 240, and the other end is fixedly connected to the rear cover 260. Thus, when the trigger 240 is pulled, the trigger 240 can drive the pull pin 250 to move away from the nozzle 111, and the movement of the pull pin 250 can drive the rear cover 260 to move away from the nozzle 111. It should also be noted that... Figure 1 , Figure 2 As shown, the end of the spring seat 230 passes through the gun rear cover 260 and is connected to a nut. Thus, the movement of the gun rear cover 260 can drive the spring seat 230 to move away from the nozzle 111. The movement of the spring seat 230 can drive the connecting rod 220 and the plug 210 to move away from the nozzle 111 together. Therefore, the user only needs to pull the trigger 240 to move the plug 210 away from the nozzle 111, thereby causing the paint to be sprayed out from the nozzle 111.

[0054] It should be noted that the control assembly 200 includes a trigger 240, a traction pin 250, a gun rear cover 260, a spring seat 230, a connecting rod 220, and a plug 210. These components are connected in sequence, so that the user only needs to pull the trigger 240 to control the plug 210 to move away from the nozzle 111, thereby allowing the paint to be sprayed out from the nozzle 111. Such a control structure is very ingenious and simple.

[0055] It should also be noted that both the grip 130 and the body 100 are fitted with protective sleeves to prevent damage to the spray gun during use. Furthermore, the upper end of the trigger 240 sleeve has a hook, which allows for easy movement by simply gripping the hook. When not in use, the spray gun can also be hung on nails or protruding objects using the hook, making it very practical.

[0056] like Figure 1 , Figure 5 As shown, based on the above embodiment, the second control cavity 122 is also provided with a spring placement seat 300 and a reset spring 400, the reset spring 400 being used to reset the control component 200.

[0057] Specifically, the spring holder 300 is fixedly connected to the gun body 110, and the two can be connected together by threads. The return spring 400 is sleeved on the spring seat 230, with one end of the return spring 400 abutting against the spring holder 300 and the other end of the return spring 400 abutting against the spring seat 230. It should be noted that when the trigger 240 is pulled, the spring seat 230 moves away from the nozzle 111, which compresses the return spring 400. When the trigger 240 is released, the return spring 400 will return to its original position, thus returning the spring seat 230 to its original position. It should be noted that even when the trigger 240 is not pulled, the return spring 400 is in a compressed state, so the return spring 400 will continuously apply elastic force to the control component 200, thus firmly sealing the plug 210 at the nozzle 111. In this way, when the trigger 240 is not pulled, the paint cannot leak from the nozzle 111.

[0058] It should be noted that the second control chamber 122 is provided with a reset spring 400. The reset spring 400 can reset the control component 200 to the closed position, and the reset spring 400 is always in a compressed state, so that the control component 200 will be continuously subjected to elastic force, thereby making the plug 210 firmly sealed at the nozzle 111.

[0059] like Figure 1 , Figure 2 , Figure 4 As shown, based on the above embodiment, the spray gun is also provided with a sealing assembly 500 to prevent the paint in the first control chamber 121 from leaking into the second control chamber 122. The sealing assembly 500 is disposed in the second control chamber 122, and the connecting rod 220 passes through the sealing assembly 500.

[0060] Specifically, the sealing assembly 500 includes a spring washer 510, a sealing sleeve 520, a sealing seat 530, an O-ring 540, and a limiting seat 550. The spring washer 510 is in contact with the gun body 110, the sealing sleeve 520 is in contact with the spring washer 510, the sealing seat 530 is in contact with the sealing sleeve 520, the limiting seat 550 is in contact with the sealing seat 530 and is threadedly connected to the gun body 110, the O-ring 540 is sleeved on the sealing seat 530, and the outer ring of the O-ring 540 is in contact with the gun body 110, while the inner ring of the O-ring 540 is in contact with the sealing seat 530. It should be noted that the spring washer 510 protrudes towards the sealing sleeve 520 during actual assembly. The limiting seat 550 and the gun body 110 are connected by threads. Therefore, simply rotating the limiting seat 550 towards the sealing sleeve 520 will press the sealing sleeve 520 and the spring washer 510 together tightly, thereby isolating the first control cavity 121 from the second control cavity 122.

[0061] It should be noted that a sealing component 500 is provided in the second control chamber 122. The sealing component 500 can prevent the paint in the first control chamber 121 from leaking into the second control chamber 122, so that the paint can only be ejected from the nozzle 111.

[0062] It should also be noted that the sealing assembly 500 and control assembly 200 of this spray gun are separately designed. This means that the seals within the first control chamber 121 and the second control chamber 122 are controlled separately from the seal at the nozzle 111. Pulling the trigger 240 will not affect the seal between the first control chamber 121 and the second control chamber 122. The advantage of this design is that misalignment of the sealing assembly 500 will not affect the seal at the nozzle 111. In contrast, existing technologies use an integrated sealing assembly 500 and control assembly 200. Therefore, any deviation in the concentricity of the sealing assembly 500 will lead to leakage at the nozzle 111.

[0063] It should also be noted that during actual installation, the spring washer 510 protrudes towards the sealing sleeve 520, which provides pre-tightening force. At this time, the limiting seat 550 is rotated towards the sealing sleeve 520 and the sealing sleeve 520 is pressed towards the spring washer 510. Due to the presence of pre-tightening force, the sealing sleeve 520 and the spring washer 510 can be tightly fitted together, thereby improving the sealing effect at the sealing assembly 500.

[0064] like Figure 6 , Figure 7 As shown, based on the above embodiment, the limiting seat 550 is provided with a hexagonal end 551, and the spring seat 230 is provided with a hexagonal hole 231. The hexagonal end 551 can be connected to the hexagonal hole 231. In this way, during actual assembly, the position of the limiting seat 550 can be adjusted by simply turning the spring seat 230, thereby adjusting the tightness of the seal. It is also very convenient during assembly.

[0065] like Figure 1 , Figure 2 As shown, based on the above embodiment, the spray gun is also provided with a nozzle insert 600, which is used to prevent paint leakage.

[0066] Specifically, the nozzle insert 600 is disposed between the nozzle 111 and the plug 210.

[0067] like Figure 1 , Figure 2As shown, based on the above embodiment, it further includes a paint connector 700, a filter element 800, and a filter spring 900. The end of the paint connector 700 is disposed within the paint cavity 131, and the paint connector 700 is threadedly connected to the gun handle 130. One end of the filter element 800 is in contact with the gun handle 130, and one end of the filter spring 900 is in contact with the other end of the filter element 800. The other end of the filter spring 900 is in contact with the paint connector 700. The paint cavity 131 is connected to the control cavity 120 through the filter element 800. It should be noted that the paint connector 700 is used to connect an external high-pressure pump and external paint.

[0068] It should be noted that the existing paint connector 700 easily entangles the external pump pipes when rotated. The paint connector 700 of this application, while ensuring a seal, not only allows for easy rotation but also prevents the pipes from tangling during rotation. Figure 8 As shown, based on the above embodiment, the filter element 800 is provided with a filter cavity 810, the filter cavity 810 is connected to the control cavity 120, the peripheral surface of the filter element 800 is provided with a spiral groove 820, and a plurality of through holes 821 for allowing paint to flow into the filter cavity 810 are provided in the spiral groove 820.

[0069] It should be noted that the filter element 800 can reduce the spraying speed of the paint through the spiral groove 820 and the through hole 821.

[0070] It should also be noted that the filter element 800 is designed as a long column, which greatly increases the filtration area, thus enabling more thorough filtration and resulting in better filtration performance.

[0071] like Figure 9 , Figure 10 As shown, based on the above embodiment, the gun handle 130 is provided with a first locking part 132, and the gun body 110 is provided with a second locking part 112. The first locking part 132 is connected to the second locking part 112 so that the gun handle 130 will not rotate relative to the gun body 110.

[0072] Specifically, the first latching part 132 is configured as a protrusion, and the second latching part 112 is configured as a groove that matches the protrusion. In this way, during assembly, the connection between the gun body 110 and the gun handle 130 can be achieved simply by inserting the protrusion into the groove. After the connection is made, the gun handle 130 will not rotate relative to the gun body 110. Of course, configuring the first latching part 132 as a groove and the second latching part 112 as a protrusion that matches the groove can also achieve the same effect.

[0073] It should be noted that the gun handle 130 is provided with a first locking part 132, and the gun body 110 is provided with a second locking part 112. After the first locking part 132 and the second locking part 112 are connected, the gun handle 130 will not rotate. The structure is very ingenious and simple.

[0074] like Figure 1 , Figure 4 As shown, based on the above embodiment, the trigger 240 is further provided with a locking assembly 1000. The locking assembly 1000 includes a knob 1100 and a locking pin 1200. The knob 1100 is rotatably connected to the trigger 240, and the locking pin 1200 is linked to the knob 1100. The knob 1100 can rotate the locking pin 1200 to abut against the gun handle 130, thereby locking the trigger 240.

[0075] Specifically, the locking assembly 1000 is used to lock the trigger 240, and the locking pin 1200 can rotate to... Figure 1 As shown in the diagram, the locking pin 1200 is in contact with the gun body 100, and the trigger cannot be pulled in this position. When the spray gun is not in use, the locking pin can be rotated to the position shown in the diagram. Figure 1 The location shown greatly increases the safety of use.

[0076] like Figure 1 As shown, based on the above embodiment, a sealing ring 133 is also provided inside the gun handle 130 to prevent the gun handle 130 from falling off. The sealing ring 133 is sleeved on the outer wall of the coating cavity, and the outer ring of the sealing ring is in contact with the gun handle 130.

[0077] It should be noted that the gun handle 130 is fitted outside the coating cavity 131, and the gun handle 130 is fixed in the current position by the sealing ring 133 alone. There is no need for any other additional fixing parts such as screws. This fixing and connection method is very ingenious and greatly simplifies the overall structure.

[0078] The working principle of this invention is as follows: A high-pressure pump is connected to the paint connector 700. The high-pressure pump forces external paint into the paint chamber 131, which then enters the filter chamber 810 of the filter element 800. From the filter chamber 810, the paint enters the first control chamber 121. At this point, pulling the trigger 240 causes the traction pin 250 to move away from the nozzle 111. This movement of the traction pin 250 causes the gun rear cover 260 to move away from the nozzle 111. This movement of the gun rear cover 260 then causes the spring seat 230 to move away from the nozzle 111. This movement of the spring seat 230 then causes the connecting rod 220 and the plug 210 to move away from the nozzle 111, allowing the paint to be sprayed from the nozzle 111. When the trigger 240 is released, the control component 200 returns to the closed position under the action of the return spring 400. Figure 1 (as shown in the image) thereby blocking the paint from being sprayed out.

[0079] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0080] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0081] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0082] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A spray gun, characterized in that, include: The gun body includes a gun body and a gun handle connected to the gun body. The gun body is provided with a nozzle and a control chamber. The gun handle is provided with a paint chamber for filling paint. The control chamber is connected to the paint chamber. The nozzle is connected to the control chamber. A control component is movably disposed in the control cavity. The control component can be moved to a closed position or an open position. When the control component is moved to the open position, the control component moves away from the nozzle, thereby causing the paint to be sprayed out from the nozzle. When the control component is moved to the closed position, the control component blocks the nozzle, thereby preventing the paint from being sprayed out. The control cavity includes a first control cavity and a second control cavity arranged adjacent to each other. The first control cavity communicates with the coating cavity. The control assembly includes a plug, a connecting rod, and a spring seat. The plug is linked to the connecting rod, and the connecting rod is linked to the spring seat. The plug is disposed in the first control cavity. One end of the connecting rod is disposed in the first control cavity, and the other end of the connecting rod is disposed in the second control cavity. The spring seat is disposed in the second control cavity. The control assembly also includes a trigger, a traction pin, and a gun rear cover. The trigger is hinged to the gun body. The traction pin is movably connected to the gun body. The gun rear cover is linked to the traction pin, the traction pin is linked to the trigger, and the spring seat is linked to the gun rear cover. The second control cavity is also provided with a spring placement seat and a reset spring for resetting the control component. The spring placement seat is fixedly connected to the gun body, and the reset spring is sleeved on the spring seat. One end of the reset spring is in contact with the spring placement seat, and the other end of the reset spring is in contact with the spring seat. It also includes a sealing assembly for preventing paint leakage from the first control cavity to the second control cavity. The sealing assembly is located in the second control cavity, and the connecting rod passes through the sealing assembly. The sealing assembly includes a spring washer, a sealing sleeve, a sealing seat, an O-ring, and a limiting seat. The spring washer is in contact with the gun body, the sealing sleeve is in contact with the spring washer, the sealing seat is in contact with the sealing sleeve, the limiting seat is in contact with the sealing seat and is threaded to the gun body, the O-ring is fitted onto the sealing seat, and the movement of the control assembly does not affect the sealing between the first control cavity and the second control cavity.

2. The spray gun as described in claim 1, characterized in that: The limiting seat is provided with a hexagonal end, and the spring seat is provided with a hexagonal hole. The hexagonal end is connected to the hexagonal hole, so that the spring seat can rotate the limiting seat.

3. A spray gun as described in claim 1, characterized in that: It also includes a nozzle insert for preventing paint leakage, the nozzle insert being disposed between the nozzle and the plug.

4. A spray gun as described in claim 1, characterized in that: It also includes a paint connector, a filter element, and a filter spring. The end of the paint connector is disposed in the paint cavity and is threadedly connected to the gun handle. One end of the filter element is in contact with the gun handle, and one end of the filter spring is in contact with the other end of the filter element. The other end of the filter spring is in contact with the paint connector. The paint cavity is connected to the control cavity through the filter element. The filter element is provided with a filter cavity, which is connected to the control cavity. The peripheral surface of the filter element is provided with a spiral groove, and the spiral groove is provided with a plurality of through holes for paint to flow into the filter cavity.

5. A spray gun as described in claim 1, characterized in that: The gun handle is provided with a first locking part, and the gun body is provided with a second locking part. The first locking part and the second locking part are connected so that the gun handle will not rotate relative to the gun body.

6. A spray gun as described in claim 1, characterized in that: The trigger is also provided with a locking assembly, which includes a knob and a locking pin. The knob is rotatably connected to the trigger, and the locking pin is linked to the knob. The knob can rotate the locking pin to engage with the gun handle, thereby locking the trigger.

7. A spray gun as described in claim 1, characterized in that: The gun handle is also equipped with a sealing ring to prevent it from falling off.

Images