Drip-proof spray gun device

Abstract

The utility model relates to a drip-proof spray gun device, which comprises a shell main body, a surface cover, a bottom cover, a spray head, a valve and a material pipe, wherein the surface cover and the bottom cover are arranged on two sides of the shell main body, the spray head is arranged on the bottom cover, and the material pipe is connected with the valve and the spray head. The valve further comprises a first valve block, a second valve block and a valve element, the second valve block is matched with the first valve block, the valve element is arranged between the first valve block and the second valve block, the control air nozzle is arranged on the second valve block, the first valve block is further provided with a first guide groove and a second guide groove, the feeding nozzle is arranged in a groove opening of the first guide groove, and the second valve block is provided with a second guide groove. The second guide groove is communicated with the first guide groove and the flow guide nozzle, the flow guide nozzle is connected with the material pipe, the control air nozzle is connected to an external air pump, the air pump adjusts the state of a valve element in the valve through the control air nozzle, and then connection and disconnection of a flow channel between the flow guide nozzle and the feeding nozzle are achieved. After spraying is completed, the flow channel between the flow guide nozzle and the feeding nozzle is in a disconnected state, and the pressure in the material pipe is smaller than the external atmospheric pressure at the moment, so that paint in the material pipe cannot leak, the phenomenon that the spraying quality is poor due to the fact that the paint leaks is effectively prevented, and practicability is high.

Description

Technical Field

[0001] The utility model relates to a spraying device, in particular to an anti-drip gun device. Background Art

[0002] A spray gun is a device that uses the rapid release of liquid or compressed air as power. Spray guns are divided into two types: general pressure type and pressurized type. There are also pressure spray guns, Carle spray guns, and automatic recovery spray guns.

[0003] Spray guns are widely used in the industry and can be installed in automated equipment such as automatic glue sprayers, automatic glue applicators, automatic paint sprayers, and coating machines for use.

[0004] However, during use, after the spray gun finishes spraying, there is still paint remaining inside the spray gun, and the paint remaining in the spray gun is likely to flow out of the spray gun and drip onto the product, affecting the spraying quality and causing trouble to the enterprise production. Summary of the Utility Model

[0005] Based on this, it is necessary to provide an anti-drip gun device in view of the deficiencies in the prior art.

[0006] The technical solution of the utility model is: an anti-drip gun device, which includes a shell main body, face covers and bottom covers installed on both sides of the shell main body, a spray head, a valve, and a material pipe connecting the valve and the spray head installed on the bottom cover. The valve is provided with a feed nozzle, a control air nozzle, and a diversion nozzle. The valve further includes a first valve block, a second valve block cooperatively installed with the first valve block, and a valve core installed between the first valve block and the second valve block. The control air nozzle is provided on the second valve block. The first valve block is further provided with a first guide groove and a second guide groove. The feed nozzle is installed at the notch of the first guide groove. The second guide groove communicates the first guide groove and the diversion nozzle. The diversion nozzle is connected to the material pipe. The control air nozzle is connected to an external air pump. The air pump adjusts the state of the valve core inside the valve through the control air nozzle, thereby realizing the on-off of the flow channel between the diversion nozzle and the feed nozzle.

[0007] In one embodiment, the first valve block and the second valve block enclose an adjustment space and an adjustment channel. The valve core includes a piston and a limiting spring. The piston includes a piston main body and a liquid stop portion connected to the piston main body. The piston main body and the limiting spring of the piston are arranged in the adjustment space. The adjustment channel communicates the control air nozzle and the adjustment space. The liquid stop portion extends into the second guide groove.

[0008] In one embodiment, the limiting spring is arranged at the rear position of the piston, and the outlet of the adjustment channel near the adjustment space is arranged in the opposite direction to the direction in which the limiting spring presses the piston.

[0009] In one embodiment, the spray head includes a main body portion, a connecting nozzle connected to one end of the main body portion, and a nozzle connected to the other end of the main body portion. A paint flow channel is provided on the spray head, and the connecting nozzle and the nozzle are connected and communicated through the paint flow channel. The connecting nozzle of the spray head passes through the bottom cover and is installed with the material pipe.

[0010] In one embodiment, a plurality of gas flow channels are provided on the spray head, and an air inlet groove is provided at one end of the main body portion close to the connecting nozzle. One end of the gas flow channel is connected and communicated with the air inlet groove, and the other end of the gas flow channel extends to the side of the main body portion close to the nozzle.

[0011] In one embodiment, the bottom cover includes a first opening and a second opening. The connecting nozzle of the spray head passes through the first opening of the bottom cover. The anti-drip spray gun device further includes an air pipe, and the air pipe passes through the face cover and the shell main body and is connected to the second opening of the bottom cover.

[0012] In one embodiment, the spray head is cooperatively installed with the bottom cover, and an air inlet space is enclosed between the spray head and the bottom cover. The second opening of the bottom cover is connected and communicated with the air inlet space. The anti-drip spray gun device further includes a sheath, and the sheath is sleeved on the spray head. A converging space is enclosed between the sheath and the spray head. The gas flow channel communicates the converging space and the air inlet space.

[0013] In one embodiment, the sheath is integrally arranged in a bowl-shaped structure, and a spray opening is provided on one side of the sheath away from the spray head.

[0014] The beneficial effect of the anti-drip spray gun device of the present utility model lies in that: by providing a valve, the valve is provided with a feed nozzle, a control air nozzle and a diversion nozzle. The diversion nozzle is connected to the material pipe, the feed nozzle is connected to an external paint conveying device, and the control air nozzle is connected to an external air pump. The air pump adjusts the state of the valve core inside the valve through the control air nozzle, and further realizes the on-off of the flow channel between the diversion nozzle and the feed nozzle. After spraying is completed, the flow channel between the diversion nozzle and the feed nozzle is in a disconnected state. At this time, the pressure inside the material pipe is less than the external atmospheric pressure, so that the paint inside the material pipe will not drip, effectively preventing the phenomenon of paint dripping and poor spraying quality, and having strong practicability. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the anti-drip spray gun device of the present utility model;

[0016] Figure 2 、 Figure 3 is Figure 1 an exploded view of the anti-drip spray gun device shown from different angles;

[0017] Figure 4 is Figure 1 a sectional view of the valve of the anti-drip spray gun device shown. Detailed Implementation Modes

[0018] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation modes of the present utility model will be given in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0020] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0021] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0024] Please refer to Figures 1 to 4 , the present utility model provides an anti-drip spray gun device, which includes a housing main body 10, face covers 20 and bottom covers 30 installed on both sides of the housing main body 10, a spray head 40 installed on the bottom cover 30 and extending into the housing main body 10, a sheath 50 installed on the spray head 40, a valve 80, a material pipe 60 connecting the valve 80 and the spray head 40, and an air pipe 70 passing through the face cover 20 and the housing main body 10 and connecting to the bottom cover 30. The air pipe 70 is connected to an external first air pump. The valve 80 is provided with a feed nozzle 83 and a control air nozzle 84. The feed nozzle 83 is connected to an external paint conveying device, and the control air nozzle 84 is connected to an external second air pump.

[0025] The housing main body 10 is integrally arranged in a hollow tubular structure. The bottom cover 30 includes a first opening 31 and a second opening 32. The spray head 40 includes a main body portion 41, a connecting nozzle 42 connected to one end of the main body portion 41, and a nozzle 43 connected to the other end of the main body portion 41. The spray head 40 is provided with a paint flow channel (not shown in the figure) and several gas flow channels 44. And an air inlet groove 45 is provided at one end of the main body portion 41 near the connecting nozzle 42. The connecting nozzle 42 and the nozzle 43 are connected and communicated through the paint flow channel. One end of the gas flow channel 44 is connected and communicated with the air inlet groove 45, and the other end of the gas flow channel 44 extends to the side of the main body portion 41 near the nozzle 43. The sheath 50 is integrally arranged in a bowl-shaped structure, and a spray opening 51 is provided on the side of the sheath 50 away from the spray head 40.

[0026] During assembly, the connecting nozzle 42 of the nozzle head 40 passes through the first opening 31 of the bottom cover 30 and is installed with the material pipe 60. The gap between the nozzle 43 and the first opening 31 is sealed with sealant. The nozzle head 40 is cooperatively installed with the bottom cover 30. An air inlet space 91 is formed between the nozzle head 40 and the bottom cover 30. The second opening 32 of the bottom cover 30 is communicated with the air inlet space 91, and the second opening 32 is connected with the air pipe 70. The sheath 50 is installed on the nozzle head 40. A confluence space 92 is formed between the sheath 50 and the nozzle head 40. The gas flow channel 44 communicates the confluence space 92 and the air inlet space 91. The nozzle 43 of the nozzle head 40 extends into the nozzle opening 51 of the sheath 50.

[0027] The valve 80 includes a first valve block 81, a second valve block 82 cooperatively installed with the first valve block 81, and a valve core 88 installed between the first valve block 81 and the second valve block 82. The feed nozzle 83 and the control air nozzle 84 are respectively arranged on the first valve block 81 and the second valve block 82. Moreover, a diversion nozzle 85 is further arranged on the first valve block 81. The first valve block 81 and the second valve block 82 enclose an adjustment space 86 and an adjustment channel 87. The valve core 88 includes a piston 881 and a limiting spring 882. In addition, the piston 881 includes a piston main body 8811 and a liquid stopping portion 8812 connected to the piston main body 8811. A first guide groove 89 and a second guide groove 810 are further arranged on the first valve block 81. The feed nozzle 83 is installed at the notch of the first guide groove 89. The second guide groove 810 communicates the first guide groove 89 and the diversion nozzle 85.

[0028] During assembly, the diversion nozzle 85 is connected with the material pipe 60. The piston main body 8811 of the piston 881 and the limiting spring 882 are arranged in the adjustment space 86, and the limiting spring 882 is arranged at the rear position of the piston 881. The adjustment channel 87 communicates the control air nozzle 84 and the adjustment space 86, and the outlet of the adjustment channel 87 near the adjustment space 86 is arranged in a direction opposite to the direction in which the limiting spring 882 presses the piston 881. The liquid stopping portion 8812 extends into the second guide groove 810. When the piston 881 is adjusted in the front and rear directions, the liquid stopping portion 8812 is stuck to the notch of the second guide groove 810 to disconnect the flow channel between the second guide groove 810 and the first guide groove 89, or moves away from the notch of the second guide groove 810 to keep the flow channel between the second guide groove 810 and the first guide groove 89 in a communicating state.

[0029] Specifically, when the second air pump conveys compressed gas to the position - adjustment space 86 through the control nozzle 84, the compressed gas pushes the piston 881 to move backward, and the limit spring 882 elastically contracts. At this time, the liquid - stopping part 8812 moves away from the notch of the second guide groove 810, so that the flow channel between the second guide groove 810 and the first guide groove 89 remains in a connected state. When the second air pump stops working or is in the air - suction state, the limit spring 882 abuts against the piston 881 to move it forward. At this time, the liquid - stopping part 8812 is stuck to the notch of the second guide groove 810 to disconnect the flow channel between the second guide groove 810 and the first guide groove 89.

[0030] During spraying, the second air pump uses compressed gas to push the piston 881 to move backward. The external compressed paint flows from the feed nozzle 83, the second guide groove 810, the first guide groove 89, the diversion nozzle 85, the material pipe 60 into the connecting nozzle 42 and the paint flow channel of the spray head 40, and is sprayed out from the nozzle 43 of the spray head 40. The first air pump sprays the compressed gas from the air pipe 70, the air - intake space 91, the confluence space 92 and from the spray port 51. After spraying is completed, when the external compressed paint stops feeding and the second air pump stops working or is in the air - suction state, the piston 881 moves backward, and the liquid - stopping part 8812 is stuck to the notch of the second guide groove 810 to disconnect the flow channel between the second guide groove 810 and the first guide groove 89. At this time, the pressure inside the material pipe 60 is less than the external atmospheric pressure, so that the paint inside the material pipe 60 will not drip.

[0031] The beneficial effect of the anti - drip spray gun device of the present utility model lies in that: by setting the valve 80, the valve 80 is provided with a feed nozzle 83, a control nozzle 84 and a diversion nozzle 85. The diversion nozzle 85 is connected to the material pipe 60, the feed nozzle 83 is connected to an external paint conveying device, and the control nozzle 84 is connected to an external air pump. The air pump adjusts the state of the valve core 88 inside the valve 80 through the control nozzle 84, and then realizes the on - off of the flow channel between the diversion nozzle 85 and the feed nozzle 83. After spraying is completed, the flow channel between the diversion nozzle 85 and the feed nozzle 83 is in a disconnected state. At this time, the pressure inside the material pipe 60 is less than the external atmospheric pressure, so that the paint inside the material pipe 60 will not drip, effectively preventing the phenomenon of paint dripping and poor spraying quality, and having strong practicability.

[0032] The technical features of the above - described embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above - described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0033] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. An anti-drip spray gun device, characterized in that, It includes a shell body, face covers and bottom covers installed on both sides of the shell body, a spray head, a valve, and a material pipe connecting the valve and the spray head installed on the bottom cover. The valve is provided with a feed nozzle, a control air nozzle, and a diversion nozzle. The valve further includes a first valve block, a second valve block cooperatively installed with the first valve block, and a valve core installed between the first valve block and the second valve block. The control air nozzle is provided on the second valve block. The first valve block is further provided with a first guide groove and a second guide groove. The feed nozzle is installed at the notch of the first guide groove. The second guide groove communicates the first guide groove and the diversion nozzle. The diversion nozzle is connected to the material pipe. The control air nozzle is connected to an external air pump. The air pump adjusts the state of the valve core inside the valve through the control air nozzle, thereby realizing the on-off of the flow channel between the diversion nozzle and the feed nozzle.

2. The anti-drip spray gun device according to claim 1, characterized in that, The first valve block and the second valve block enclose an adjustment space and an adjustment channel. The valve core includes a piston and a limiting spring. The piston includes a piston body and a liquid stopping portion connected to the piston body. The piston body of the piston and the limiting spring are arranged in the adjustment space. The adjustment channel communicates the control air nozzle and the adjustment space. The liquid stopping portion extends into the second guide groove.

3. The anti-drip spray gun device according to claim 2, characterized in that, The limiting spring is arranged at the rear position of the piston, and the outlet of the adjustment channel near the adjustment space is arranged in the opposite direction to the direction in which the limiting spring presses the piston.

4. The anti-drip spray gun device according to claim 1, characterized in that, The spray head includes a main body portion, a connecting nozzle connected to one end of the main body portion, and a nozzle connected to the other end of the main body portion. A paint flow channel is provided on the spray head. The connecting nozzle and the nozzle are connected through the paint flow channel. The connecting nozzle of the spray head passes through the bottom cover and is installed with the material pipe.

5. The anti-drip spray gun device according to claim 4, wherein, A plurality of gas flow channels are provided on the spray head, and an air inlet groove is provided at one end of the main body portion near the connecting nozzle. One end of the gas flow channel is connected to the air inlet groove, and the other end of the gas flow channel extends to one side of the main body portion near the nozzle.

6. The anti-drip spray gun device according to claim 5, characterized in that, The bottom cover includes a first opening and a second opening. The connecting nozzle of the spray head passes through the first opening of the bottom cover. The anti-drip spray gun device further includes an air pipe. The air pipe passes through the face cover and the shell body and is connected to the second opening of the bottom cover.

7. The anti-drip spray gun device according to claim 6, wherein, The spray head is cooperatively installed with the bottom cover. An air inlet space is enclosed between the spray head and the bottom cover. The second opening of the bottom cover is connected to the air inlet space. The anti-drip spray gun device further includes a sheath. The sheath is installed on the spray head. A converging space is enclosed between the sheath and the spray head. The gas flow channel communicates the converging space and the air inlet space.

8. The anti-drip spray gun device according to claim 7, wherein, The sheath is integrally arranged in a bowl-shaped structure, and a spray opening is provided on one side of the sheath away from the spray head.

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