CN210815927U

CN210815927U - Novel spraying gun

Info

Publication number: CN210815927U
Application number: CN201921316608.XU
Authority: CN
Inventors: 果风松; 杨文波; 沈长根
Original assignee: Jinghua Park Handan Machinery Technology Co ltd
Current assignee: Jinghua Park Handan Machinery Technology Co ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-06-23
Anticipated expiration: 2029-08-14

Abstract

The utility model discloses a novel spraying gun. This spray gun includes: the spraying gun comprises a spraying gun body, a first cavity and a second cavity, wherein the spraying gun body is provided with a first cavity extending along the length direction; the spray head is detachably connected with one end of the spray gun body, the spray head is provided with a discharge channel extending along the length direction, a material block is arranged on the outer side of the spray head and connected with an external raw material supply device, a collision hole is formed between the material block and the discharge channel, at least one raw material is mixed in the spray head and sprayed out from the discharge channel, and the discharge channel is communicated with the first cavity; the spray gun pull rod is arranged in the discharge channel in a sliding manner; the spraying gun power unit is used for driving a spraying gun pull rod so that the spraying gun pull rod is used for controlling the communication between the discharge channel and the collision hole and pushing at least part of mixed raw materials out of the discharge channel, and a backflow groove which can be communicated with the backflow hole is formed in the spraying gun pull rod; the handle, the handle is used for controlling the spray gun power pack, and the handle is connected with spray gun body detachably.

Description

Novel spraying gun

Technical Field

The utility model relates to a spraying equipment especially relates to a novel spraying gun.

Background

In two-component or multi-component polyurea, polyurethane resin, elastomer spray systems, the spray gun is an essential component of the spray system. The spraying gun realizes the functions of mixing and spraying the raw materials immediately. In the prior art, after the spraying gun is used, the mixture of the raw materials is remained on the discharge channel and the nozzle of the spraying gun, and the secondary use is influenced.

Accordingly, there is a need for a spray coating gun that at least partially addresses the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.

In order to solve the above problem at least partially, according to a first aspect of the present invention, there is provided a novel painting gun, comprising:

a spray gun body having a first chamber extending in a length direction;

the spray gun comprises a spray head, wherein the spray head is detachably connected with one end of a spray gun body, the spray head is provided with a discharge channel extending along the length direction, a material block is arranged on the outer side of the spray head and connected with an external raw material supply device, a collision hole is formed between the material block and the discharge channel, at least one raw material is mixed in the spray head and is sprayed out from the discharge channel, a backflow hole is also formed between the material block and the discharge channel and is positioned behind the collision hole, one end of the backflow hole is communicated with the material block, the other end of the backflow hole is communicated with the discharge channel, and the discharge channel is communicated with a first chamber;

the spray gun pull rod is arranged in the discharge channel in a sliding manner;

the spray gun power unit is used for driving the spray gun pull rod so that the spray gun pull rod is used for controlling the communication between the discharge channel and the collision hole and pushing at least part of mixed raw materials out of the discharge channel, and a backflow groove which can be communicated with the backflow hole is formed in the spray gun pull rod;

the handle, the handle is used for controlling the spray gun power pack, the handle with spray gun body detachably connects.

Preferably, the method further comprises the following steps,

and the adjusting device is arranged in the first cavity and connected with the pull rod of the spraying gun for adjusting the position of the pull rod of the spraying gun.

Preferably, the spray gun further comprises a pull rod connecting piece, and the pull rod connecting piece is positioned between the spray head and the spray gun body and is used for connecting the adjusting device and the spray gun pull rod.

Preferably, the adjusting device comprises a power source center shaft consisting of a piston bolt, a long piston shaft and a cylinder output shaft which are sequentially connected, and a boss capable of being connected with an external adjusting tool is arranged at the end part of the power source center shaft, so that the power source center shaft drives the pull rod connecting piece to move back and forth through rotation.

Preferably, the tie rod connector comprises:

the spray gun comprises a pull rod connecting piece body, wherein one end of the pull rod connecting piece body is provided with a screw hole which can be in threaded connection with a piston bolt of the adjusting device, and the other end of the pull rod connecting piece body is provided with a groove which can be matched with a pull rod of the spray gun;

the positioning pin is perpendicular to the length direction of the pull rod connecting piece body, one end of the positioning pin is fixedly connected with the pull rod connecting piece body, a guide groove extending along the length direction is formed in the inner wall of the first cavity, and the other end of the positioning pin is clamped in the guide groove and used for limiting rotation of the pull rod connecting piece body.

Preferably, the spray head includes:

the discharging channel is arranged in the pull rod outer sleeve;

the material block is detachably arranged on the pull rod outer sleeve, and the collision hole is arranged on the pull rod outer sleeve;

the spray nozzle is arranged at one end, far away from the spray gun body, of the discharge channel, and the spray nozzle is detachably arranged on the pull rod outer sleeve.

Preferably, the nozzle further comprises:

the nozzle pressing plate is detachably connected with the pull rod outer sleeve and used for pressing the nozzle on the pull rod outer sleeve, a cleaning air path is arranged on the nozzle pressing plate and used for cleaning the nozzle.

Preferably, the nozzle comprises a plurality of models, and different spray shapes can be realized by replacing different models of the nozzle.

Preferably, the handle comprises at least one of a pneumatic control handle and an electric control handle.

Preferably, a paint control device is arranged in the spray head, and the paint control device comprises:

the cylindrical cavity is arranged in the spray head, extends along the horizontal direction and is communicated with the discharge channel, and the diameter of the cylindrical cavity is larger than that of the discharge channel;

the conical cavity is arranged in the spray head, one end with a large caliber of the conical cavity is communicated with the left end of the cylindrical cavity, and one end with a small caliber of the conical cavity is communicated with the left end of the discharge channel;

the movable column is arranged in the cylindrical cavity, a pointed cone part is arranged at the left end of the movable column and is attached to the inner wall of the conical cavity, a material hole penetrates through the movable column along the axial direction, and the movable column can reciprocate left and right in the cylindrical cavity;

the baffle is arranged on the outer wall of one end, far away from the pointed cone, of the movable column, the baffle is perpendicular to the axis of the movable column, one end of a first spring is fixedly connected with the left end of the baffle, and the other end of the first spring is fixedly connected with the left inner wall of the cylindrical cavity;

one end of the second spring is fixedly connected with the right end of the movable column, the other end of the second spring is fixedly connected with the movable block, and the left end of the movable block is provided with a blocking block.

In this embodiment, a flow monitoring device is provided on the nozzle, and the flow monitoring device includes:

the flow sensor is arranged on the inner wall of the discharging channel;

a processor disposed within the spray head;

the display is arranged on the outer wall of the spray head, the flow sensor is electrically connected with the processor, and the processor is electrically connected with the display.

Preferably, be provided with voltage stabilizing circuit in the treater, voltage stabilizing circuit includes: a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R14, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C8, an inductor L, a first field effect transistor VT1, a second field effect transistor VT2, a first Zener diode VZ1, a second Zener diode VZ2 and a diode VD 1;

one end of the resistor R7 is connected to an output circuit IN, the other end of the resistor R7 is connected to one end of the first fet VT1, two ends of the resistor R7 are connected IN parallel to the capacitor C5, the other end of the first fet VT1 is connected to one end of the resistor R6, the other end of the resistor R6 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the resistor R2, two ends of the resistor R1 are connected IN parallel to the capacitor C1, the other end of the resistor R2 is connected to the cathode of the first zener diode VZ1, two ends of the resistor R2 are connected IN parallel to the capacitor C2, the anode of the first zener diode VZ1 is connected to one end of the resistor R4, and the other end of the resistor R4 is connected to the positive input end of the operational amplifier U;

one end of the resistor R8 is connected with an output circuit IN, the other end of the resistor R8 is connected with the anode of the second Zener diode VZ2, the cathode of the second Zener diode VZ2 is connected with one end of the resistor R5, the other end of the resistor R5 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with the inverting input end of the operational amplifier U, and the resistor R3 is connected with a capacitor C3 IN parallel;

the signal output part of operational amplifier U is connected with resistance R14 one end, the resistance R14 other end with resistance R9 one end is connected, the resistance R9 other end is connected with output circuit IN, resistance R14 both ends parallel capacitance C6, second field effect transistor VT2 one end with operational amplifier U's signal output part is connected, the second field effect transistor VT2 other end with diode VD1 positive pole is connected, diode VD1 negative pole with electric capacity C8 one end is connected, the electric capacity C8 other end is connected with output circuit IN, electric capacity C8's both ends are parallelly connected to have inductance L.

The technical scheme of the utility model has following advantage: when the spray gun is closed after use, the power unit of the spray gun drives the pull rod of the spray gun to move forwards, and the pull rod of the spray gun is in a front position. The in-process of spray gun pull rod forward motion can be released the residue in the discharging channel by the nozzle, and then prevents that remaining residue from blockking up discharging channel and shower nozzle, avoids influencing the use next time.

Drawings

Fig. 1 is a schematic structural view of a spray gun according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a pull rod connection according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a spray head and a pull rod connecting piece of a spray gun according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a spray gun pull rod and a pull rod connecting piece of the spray gun according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of a spray head of a spray gun according to an embodiment of the present invention;

fig. 6 is an exploded view of a spray gun nozzle provided in accordance with an embodiment of the present invention;

fig. 7 is a schematic structural view of a nozzle pressing plate according to an embodiment of the present invention;

fig. 8 is a cross-sectional view of a spray head of a spray gun according to an embodiment of the present invention;

fig. 9 is another cross-sectional view of a spray gun at the spray head provided by an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a paint control apparatus according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a flow monitoring device according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a voltage stabilizing circuit according to an embodiment of the present invention.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The present invention is described in detail below with reference to the preferred embodiments, however, the present invention can have other embodiments in addition to the detailed description, and should not be construed as being limited to the embodiments set forth herein.

Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the present invention and do not limit the present invention.

Referring to fig. 1 to 4, an embodiment of the present invention discloses a novel spray coating gun. The spray coating gun may include: a coating gun body 10, the coating gun body 10 having a first chamber 101 extending in a length direction; a nozzle 20, the nozzle 20 being detachably connected to one end of the spray gun body 10, the nozzle 20 having a discharge passage 201 extending in a length direction, at least one raw material being mixed and supplied from the nozzle 20

The discharging channel 201 is sprayed out; the spray gun pull rod 30 is at least partially arranged in the discharge channel 201 in a sliding manner, the spray gun pull rod 30 is used for controlling the communication between the discharge channel 201 and the collision hole 202 and pushing at least part of mixed raw materials out of the discharge channel 201, and a backflow groove 301 which can be communicated with the backflow hole 208 is arranged on the spray gun pull rod 30; a handle 40, the handle 40 is used for controlling the spray gun, and the handle 40 is detachably connected with the spray gun body 10.

In actual use, referring to fig. 1 and 5, the handle 40 of the spray gun can control the operation of the spray gun. When the spraying is to be prepared, the power unit of the spraying gun can drive the pull rod 30 of the spraying gun to slide in the discharge channel 201 from left to right), so that the pull rod 30 of the spraying gun is in the rear position, the collision hole 202 on the material block 204 can be communicated with the discharge channel 201, and the raw materials, such as paint, in the material block 204 are collided and mixed in the discharge channel 201 in the pull rod outer sleeve 203 through the collision hole 202 and then are sprayed out from the nozzle 205 through the discharge channel 201, thereby realizing the spraying operation.

When the spray gun is closed after use, the power unit of the spray gun drives the pull rod 30 of the spray gun to move forwards, and the pull rod 30 of the spray gun is in the front position. The process of the forward movement of the spray gun draw bar 30 can push the residue (raw material) in the discharging channel 201 out from the nozzle 205, so as to prevent the residue from blocking the discharging channel 201 and the spray head 20, and avoid influencing the next use.

Optionally, referring to fig. 9, the spray gun draw bar 30 is further provided with a backflow groove 301 capable of communicating with the backflow hole 208, and when the spray gun draw bar 30 is in the front position, part of the raw material may flow back to the backflow hole 208 through the backflow groove 301, thereby avoiding waste of the raw material.

Specifically, as shown in fig. 5 to 8, the structure of the spray head 20 may include: the pull rod outer sleeve 203, the discharging channel 201 is arranged in the pull rod outer sleeve 203; at least one material block 204, the material block 204 is detachably arranged on the pull rod outer sleeve 203, the collision hole 202 is arranged on the pull rod outer sleeve 203, and the material block 204 can be connected with an external raw material supply device so as to supply raw materials to the spraying gun through the collision hole 202; a nozzle 205, the nozzle 205 being detachably provided on the drawbar outer sleeve 203.

Referring to fig. 6, the nozzle 205 includes a plurality of types, and the circular spraying and flat spraying functions of different spray shapes are realized by replacing different types of nozzles 205, and when the flat spraying function is used, the installation angle of the nozzle 205 can be changed as needed to adjust the spray shape direction. The structure can realize quick assembly and disassembly and is convenient to clean and maintain.

Further, referring to FIG. 6, to facilitate easier removable mounting of the nozzle 205, the spray head 20 may further include a nozzle press 206, the nozzle press 206 being removably coupled to the drawbar outer sleeve 203. A nozzle press 206 may be used to press the nozzles 205 against the drawbar outer sleeve 203.

When the spray gun is stopped, the pull rod 30 of the spray gun pushes the residue in the discharging channel 201 out of the nozzle 205, the residue is accumulated at the nozzle 205, and the residue can block the nozzle 205 if the residue foams in a reaction way. Therefore, the nozzle pressing plate 206 can be further provided with a cleaning gas path 207, the nozzle pressing plate 206 can be connected with a gas source, and the compressed gas flow blows away residues cleaned by the coating gun pull rod 30 and inhibits the accumulation of raw materials at the nozzle 205.

Preferably, referring to fig. 7, a cleaning air path 207 (as shown in the figure) may be further designed on the nozzle pressing plate 206, an outlet of the cleaning air path intersects with the nozzle 205, the cleaning air path 207 is automatically opened when the gun is stopped, the compressed air blows out the residue at the cleaning nozzle 205 from the air outlet, and the air source path is disconnected from the air outlet to stop air outlet when the gun is started, so as to avoid affecting atomization and spray at the nozzle 205.

Because there is a small error in the machining process, there is no feedback specifically on the individual parts, but the accumulated error after assembly is obvious, which may cause the action of the pull rod 30 of the spray gun not to be in place, and affect the working effect of the spray gun, for example: the rear pulling of the pull rod is not in place, so that the discharging and collision effects are influenced; the pull rod is pushed out of position, which can affect the gun cleaning effect or damage the nozzle 205. Thus, the spray coating gun may further comprise an adjustment device 50. The adjusting device 50 can effectively eliminate the influence of accumulated errors and ensure the normal operation of the spray gun.

Specifically, referring to fig. 1 and 3, the adjusting device 50 includes a power source central shaft 501 composed of a piston bolt, a long piston shaft, and a cylinder output shaft, which are connected in sequence. The end of the power source center shaft 501 is provided with a boss capable of being connected with an external adjusting tool so that the power source center shaft 501 drives the drawbar connection member 60 to move forward and backward by rotation. For example, in the use process, the plug 502 of the rear end cover of the spray gun is unscrewed, and the outer hexagonal boss 503 at the tail part of the power source central shaft 501 can be seen. The power source central shaft 501 composed of piston bolt, long piston shaft, cylinder output shaft and other parts is integrated with fastening treatment during assembly, and the central shaft can rotate simultaneously by utilizing the outer hexagonal boss 503 at the tail part of the sleeve screwdriver rotating central shaft. The front end of the central shaft is in threaded connection with a fine adjustment connecting rod 601, the fine adjustment connecting rod 601 is limited to rotate by a positioning pin 603 capable of sliding back and forth in a groove of the transition connecting piece and has a locking function, the fine adjustment connecting rod 601 can move back and forth by the rotation of the central shaft, the fine adjustment connecting rod 601 is connected with the spray gun pull rod 30 through a pull rod connecting piece 60, and finally the back and forth movement adjustment of the spray gun pull rod 30 is achieved.

In the present embodiment, as shown in fig. 1, 3 and 4, a tie bar coupler 60 is further provided to couple the spray gun tie bar 30. A pull rod coupling 60 is located between the spray head 20 and the spray gun body 10 for coupling the adjustment device 50 to the spray gun pull rod 30. The pull rod connecting piece 60 may specifically include a pull rod connecting piece 60 body, one end of the pull rod connecting piece 60 body is provided with a screw hole capable of being in threaded connection with the adjusting device 50, and the other end of the pull rod connecting piece 60 body is provided with a groove capable of being matched with the pull rod 30 of the spraying gun; the positioning pin 603 and the positioning pin 603 are perpendicular to the length direction of the body of the pull rod connector 60, and are used for limiting the rotation of the body of the pull rod connector 60. The pull rod connecting piece 60 can meet the locking and positioning requirements after the pull rod 30 of the spray gun is finely adjusted, can effectively prevent the pull rod 30 of the spray gun from rotating, and meanwhile realizes action transmission.

For example, the body of the tie rod 60 may be a fine adjustment connecting rod 601, as shown in fig. 2, one end of the fine adjustment connecting rod 601 is a clamping groove structure, the other end is an internal thread, two narrow notches 602 are symmetrically formed at the end of the internal thread along the central line direction, and a fastening screw hole is respectively formed at the upper and lower sides of the side surface parallel to the notches 602. The positioning pin 603 is vertically installed with the fine adjustment connecting rod 601 and can slide in the groove of the transition connecting piece, so that the rotation of the fine adjustment connecting rod 601 is limited, when the cylinder output shaft in threaded connection with the fine adjustment connecting rod 601 rotates, the fine adjustment connecting rod 601 can drive the spraying gun pull rod 30 connected with the fine adjustment connecting rod 601 at the front end to move back and forth, the position of the spraying gun pull rod 30 is adjusted, and the threaded connection part of the cylinder output shaft and the fine adjustment connecting rod 601 can be locked by the fastening screw 604.

The end face of one end, provided with the clamping groove, of the fine adjustment connecting rod 601 is provided with a semicircular groove 605, the end face of the clamping groove end at the tail part of the spraying gun pull rod 30 is also provided with the semicircular groove 605, the two grooves are aligned and then are filled with a limit pin 606, and then the two semi-cylindrical pull rod connecting pieces 60 are clamped into the clamping grooves to be fixedly connected, so that the connection between the fine adjustment connecting rod 601 and the spraying gun pull rod 30 is realized, meanwhile, the rotation of the spraying gun pull rod 30 is limited by the limit pin 606 and the groove structure, and the backflow groove 301 on the spraying gun pull rod 30 is always aligned with the discharge hole.

In this embodiment, the handle 40 may include at least one of a pneumatic control handle and an electric control handle. The replaceable gun handle 40 changes the control mode according to different use requirements. This rifle has two kinds of control methods, and the accessible is changed different brake valve lever 40 and is realized, and the rifle handle 40 adopts fast-assembling buckle formula to be connected with the spraying rifle body, changes easy operation, quick convenient. A pneumatic control handle: a pneumatic reversing valve is arranged in the handle, and the reversing valve can be triggered by a trigger to start and stop the gun. Electric control handle: the handle is internally provided with an electric sensor, the electric sensor can be triggered by a trigger to start and stop the gun, and remote operation and quantitative operation can be realized by the control mode.

In the actual use process, referring to fig. 8, due to the requirements of sealing and positioning, even when the left and right material blocks 204 are loosened by fastening screws, the material blocks are easily clamped with the pull rod outer sleeve 203, are not easy to separate, and are very inconvenient to detach and maintain, so that the material blocks 204 are provided with auxiliary detaching screw ejection process holes 207, and the material blocks 204 can be easily separated from the pull rod outer sleeve 203 by using the ejection screws during detaching.

In one embodiment, as shown in fig. 10, a paint control device is disposed in the spray head 20, and the paint control device includes:

the cylindrical cavity 21 is arranged in the spray head 20, the cylindrical cavity 21 extends in the horizontal direction and is communicated with the discharge channel 201, and the diameter of the cylindrical cavity 21 is larger than that of the discharge channel 201;

the conical cavity 22 is arranged in the spray head 20, one end with a large caliber of the conical cavity 22 is communicated with the left end of the cylindrical cavity 21, and one end with a small caliber of the conical cavity 22 is communicated with the left end of the discharging channel 201;

the movable column 23 is arranged in the cylindrical cavity 21, a pointed cone part 24 is arranged at the left end of the movable column 23, the pointed cone part 24 is attached to the inner wall of the conical cavity 22, a material flowing hole 25 is arranged in the movable column 23 in an axial penetrating mode, and the movable column 23 can reciprocate left and right in the cylindrical cavity 21;

a baffle 26 arranged on the outer wall of one end of the moving column 23 far away from the tapered part 24, wherein the baffle 26 is vertical to the axis of the moving column 23, one end of a first spring 27 is fixedly connected with the left end of the baffle 26, and the other end of the first spring 27 is fixedly connected with the left inner wall of the cylindrical cavity 21;

one end of the second spring 28 is fixedly connected with the right end of the moving column 23, the other end of the second spring 28 is fixedly connected with the moving block 29, and the left end of the moving block 29 is provided with a blocking block 31.

The working principle of the technical scheme is as follows: when the coating gun is used for coating, when the flow rate of the coating passing through the discharge channel 201 is slow, due to the elastic force of the first spring 27, the baffle 26 moves rightwards, the moving column 23 is driven to move rightwards, the pointed cone part 24 is separated from the conical cavity 22, and at the moment, the coating can be sprayed out through the left end of the discharge channel 201 through the gaps among the cylindrical cavity 21, the pointed cone part 24 and the conical cavity 22, and can also pass through the material flowing hole 25 and then be sprayed out through the left end of the discharge channel 201; when the flow rate of the coating passing through the discharge channel 201 is high, the baffle 26 compresses the first spring 27 leftwards under the action of water pressure to drive the moving column 23 to move leftwards, so that the pointed cone part 24 is attached to the conical cavity 22, at the moment, the coating can only pass through the material passing hole 25 and is sprayed out through the left end of the discharge channel 201, the flow rate of the fluid is high, the sectional area of the fluid is reduced, the flow rate is not changed greatly, and the uniform coating amount is ensured in the process of spraying and robbing in the spraying process; when the flow rate continues to increase, the pressure of the fluid overcomes the elastic force of the second spring 28, so that the moving block 29 moves leftwards, and the blocking block 31 blocks the material flow hole 25, and the spraying cannot be carried out.

The beneficial effects of the above technical scheme are: the spraying operation can be realized by the coating control device, the spraying operation can be adapted to different workers, even if different users operate the handles to cause great change of the flow rate of the coating, the coating can be sprayed at uniform and stable flow through the nozzle, the stability of the spraying operation process is improved, and the sprayed thickness is more uniform and beautiful; in addition, the device can also prevent misoperation of personnel, so that the flow is suddenly increased, the spraying effect is easily influenced, and the plugging block can rapidly plug the nozzle when the flow is suddenly increased, thereby avoiding the waste of the coating and saving the cost.

In one example, as shown in fig. 11, the spray head 20 is provided with a flow monitoring device, which includes:

the flow sensor 32 is arranged on the inner wall of the discharging channel 201;

a processor 33 disposed within the spray head 20;

and the display 34 is arranged on the outer wall of the spray head 20, the flow sensor 32 is electrically connected with the processor 33, and the processor 33 is electrically connected with the display 34.

The beneficial effects of the above technical scheme are: the flow sensor 32 can detect the flow of paint during use, transmit the flow to the processor 33, and display the flow via the display 34 for the user to know the paint flow value during spraying.

In one example, as shown in fig. 12, a voltage regulator circuit is disposed within the processor 33, and the voltage regulator circuit includes: a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R14, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C8, an inductor L, a first field effect transistor VT1, a second field effect transistor VT2, a first Zener diode VZ1, a second Zener diode VZ2 and a diode VD 1;

The beneficial effects of the above technical scheme are: the voltage stabilizing circuit is a linear voltage stabilizing circuit, the purpose of limiting the output voltage IN is realized, the stability of the voltage IN the processor is ensured, and the voltage stabilizing circuit has a simple structure and is convenient to install and debug.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "part," "member," and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that many more modifications and variations can be made in accordance with the teachings of the present invention, all of which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A novel spray gun is characterized in that the spray gun comprises:

a spray gun body having a first chamber extending in a length direction;

2. The novel paint spray gun of claim 1 further comprising,

3. The novel coating gun of claim 2, further comprising a pull rod connection between the spray head and the coating gun body for connecting the adjustment device and the coating gun pull rod.

4. The novel spraying gun as claimed in claim 3, wherein the adjusting device comprises a power source central shaft consisting of a piston bolt, a long piston shaft and a cylinder output shaft which are connected in sequence, and a boss which can be connected with an external adjusting tool is arranged at the end part of the power source central shaft, so that the power source central shaft drives the pull rod connecting piece to move back and forth through rotation.

5. The new paint gun as claimed in claim 4, wherein the tie bar connection includes:

6. The new paint spray gun of claim 1 wherein said spray head comprises:

the discharging channel is arranged in the pull rod outer sleeve;

7. The novel paint spray gun of claim 6 wherein said nozzle further comprises:

8. The novel paint spraying gun according to claim 1, wherein a paint control device is arranged in the spray head, and the paint control device comprises:

9. The novel coating gun of claim 1, wherein a flow monitoring device is disposed on the spray head, and the flow monitoring device comprises:

the flow sensor is arranged on the inner wall of the discharging channel;

a processor disposed within the spray head;

10. The novel coating gun of claim 9, wherein a voltage regulator circuit is disposed within the processor, the voltage regulator circuit comprising: a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R14, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C8, an inductor L, a first field effect transistor VT1, a second field effect transistor VT2, a first Zener diode VZ1, a second Zener diode VZ2 and a diode VD 1;