CN217796897U - Flow-adjustable small-diameter pipeline inner wall sprayer - Google Patents
Flow-adjustable small-diameter pipeline inner wall sprayer Download PDFInfo
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- CN217796897U CN217796897U CN202221991466.9U CN202221991466U CN217796897U CN 217796897 U CN217796897 U CN 217796897U CN 202221991466 U CN202221991466 U CN 202221991466U CN 217796897 U CN217796897 U CN 217796897U
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Abstract
The utility model discloses a flow-adjustable small-caliber pipeline inner wall sprayer, which comprises a spray head component and a flow adjusting component, wherein the spray head component is used for spraying the inner wall of a pipeline, and the flow adjusting component is connected with the spray head component and is used for adjusting the flow of coating sprayed by the spray head component; the flow adjusting assembly comprises a piston seat, a piston pull rod, a piston, a compression spring and a piston adjusting joint, the piston can be driven to be arranged in the piston seat, one end of the piston pull rod is fixedly connected with the piston, the other end of the piston pull rod penetrates through the bottom of the piston seat and is connected with the spray head assembly, the piston adjusting joint is detachably connected to the piston seat and can control the moving distance of the piston, and then the flow of the spray head assembly spraying paint is controlled. The utility model discloses the spraying is realized to the inner wall of tubule footpath pipe that can be better, and the spraying is effectual, has solved the technical problem of completion tubule footpath pipe inner wall spraying that current spraying mode can not be better.
Description
Technical Field
The utility model belongs to the technical field of the spraying device, concretely relates to flow adjustable small pipe diameter pipeline inner wall sprayer.
Background
At present, the inner wall spraying of a pipeline on the market mainly has three forms, firstly, the traditional high-pressure airless inner wall spraying is suitable for medium and high-viscosity pipe diameters, the main spraying mode is that a common nozzle rotates to spray, the sprayer mainly aims at pipes with the pipe diameters of phi 300-1200mm, and for pipes with the pipe diameters smaller than phi 300mm, the spraying distance of the nozzle is 250mm, so the spraying cannot be carried out, and the traditional sprayer is heavy and inconvenient to move, and the spraying quality of the inner wall surface of the tail end of the pipeline is poor; secondly, the hollow conical nozzle is adopted for spraying, the spray coating is suitable for medium and low viscosity, the spray coating is mainly used for spraying the inner wall of the pipeline according to the fog amplitude shape of the nozzle, although the spray coating can be used for spraying the inner wall of the pipeline, the practicability of the spray coating is influenced by the atomization distance and the distance between the nozzle and a valve port; thirdly, high-speed swing disc spraying is adopted, the sprayer mainly adopts a high-speed centrifugal mode to finish atomization spraying of the coating, and the spraying mode has the following defects: the high-speed rotating motor with the diameter less than 80mm is not available in the market, the power is small, and the paint with medium and high viscosity cannot be completely atomized. The existing sprayer can not well spray the inner wall of the small-caliber pipeline, and particularly when the middle-high viscosity paint is adopted for spraying, the spraying quality of the existing sprayer is not high.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a flow adjustable little pipe diameter pipeline inner wall sprayer aims at solving above-mentioned problem.
In order to achieve the above object, the utility model provides a following technical scheme: a flow adjustable small diameter pipe inner wall sprayer comprising: the spray head assembly is used for spraying the inner wall of a pipeline, and the flow regulating assembly is connected with the spray head assembly and used for regulating the flow of the coating sprayed by the spray head assembly;
the flow adjusting assembly comprises a piston seat, a piston pull rod, a piston, a compression spring and a piston adjusting joint, the piston can be arranged in the piston seat in a driven mode, one end of the piston pull rod is fixedly connected with the piston, the other end of the piston pull rod penetrates through the bottom of the piston seat, the other end of the piston pull rod is connected with the spray head assembly, the piston adjusting joint is detachably connected to the piston seat and can control the moving distance of the piston, and then the flow of the coating sprayed by the spray head assembly is controlled.
Further, the flow regulating assembly further comprises a compression spring and a compressed air connector, the piston seat is provided with an air supply channel for providing power for the movement of the piston, and an air inlet of the air supply channel is connected with the compressed air connector; and the compression spring is positioned between the piston adjusting rod and the piston and is used for rebounding and resetting the piston.
Further, the inner wall sprayer for the small-diameter pipeline with the adjustable flow rate further comprises a centering sleeve, an air supply assembly and a feeding assembly;
the air supply assembly is connected with the spray head assembly and is used for conveying compressed air to the spray head assembly;
the feeding assembly is connected with the spray head assembly and is used for conveying the coating to the spray head assembly;
the spray head assembly is arranged in the centering sleeve and comprises an air cap, a valve seat, a valve needle and a gun body, the air cap is fixedly connected with the gun body and forms a compressed air channel, the valve seat is connected with the valve needle in a matched mode and is connected with the gun body to form a coating channel, and compressed air and coating are intersected near an air outlet of the air cap through the compressed air channel and the coating channel respectively to finish coating atomization and spray coating on the inner wall of a pipeline.
Further, the air cap is provided with a first air passage port and a second air passage port, and the first air passage port and the second air passage port are arranged in parallel along the central line of the air cap; the position that the end face of giving vent to anger of air cap corresponds the second gas channel mouth is equipped with a slant protruding structure, the second gas channel mouth extends to inside the protruding structure of slant, just it has a slant gas outlet to open on the inclined plane of protruding structure, the slant gas outlet with second gas channel mouth intercommunication, the air that blows out is used for changing the traffic direction of coating.
Furthermore, the end face of the gun body close to one end of the air cap is provided with a valve seat mounting hole used for matching and mounting a valve seat, the valve seat is detachably connected in the valve seat mounting hole during mounting, and a sealing gasket is arranged at the position where the valve seat is attached to the upper end face of the mounting hole.
Further, an air inlet channel port is arranged on the gun body, one end, far away from the air cap, of the air inlet channel port is communicated with the air feeding assembly, and the other end of the air inlet channel port is communicated to the inside of the air cap to form a smooth compressed air channel.
Further, the gun body is also provided with a feeding channel port, the feeding channel port comprises an axial feeding port and a radial feeding port, the axial feeding port is communicated with the valve seat mounting hole through the radial feeding port, the valve seat mounting hole is communicated with an inner channel port of a valve seat, one end, far away from the air cap, of the axial feeding port is connected with the feeding assembly, and when the valve needle is opened, a smooth coating channel is formed.
Furthermore, a conical discharge hole is formed in a valve port position in the valve seat, a conical head portion matched with the conical discharge hole is arranged at one end, close to the valve port, of the valve needle, the other end of the valve needle penetrates through the gun body and is connected with the flow regulating assembly, and when the flow regulating assembly is used, the valve needle is driven to move left and right to further control the opening and closing of the valve port of the valve seat.
Furthermore, a connecting and fixing plate is connected between the piston seat and the gun body to strengthen the structure.
Further, it has the horizontal groove structure who is used for intake pipe and inlet pipe installation to open on the lateral wall of piston seat, intake pipe and inlet pipe are installed respectively in the groove structure who corresponds.
The automatic gas-assisted pipeline inner wall sprayer with the small pipe diameter further comprises a mounting plate, and the mounting plate is fixedly connected with the piston seat and used for being mounted with a reciprocating engine during working.
The working principle of the invention is as follows:
the sprayer is installed on the reciprocating machine through the installation plate, the proper centering sleeve is selected according to the size of the pipeline, then the sprayer is fed into the pipeline through the reciprocating machine, when the reciprocating machine feeds the sprayer to the initial position of pipeline spraying, the opening of compressed air is controlled through the control box, the compressed air enters the gun body through the air feeding joint and then is sprayed out from the middle of the air cap and the hole in the inclined plane at the front end of the air cap. Then, a spraying pump is started to convey the coating into a feeding pipe, and the coating enters the gun body through a coating joint and flows into a valve needle valve seat; then an air source switch on the control box is turned on, compressed air pushes the piston to move after passing through the compressed air joint and the air supply channel, then the piston pull rod pulls the valve needle to move backwards, so that the coating is sprayed out from the valve port of the valve seat, the sprayed coating is impacted and atomized with the compressed air sprayed out from the middle of the air cap, and the atomized coating is attached to the inner wall of the pipeline after being impacted by the compressed air sprayed out from the inclined plane at the front end of the air cap.
The invention has the beneficial effects that:
1. through setting up the centering cover, guarantee that spraying all is on the center of pipeline at every turn, make the membrane thickness of spraying at every turn as even as possible, protection needle and rifle body prevent that coating from attaching to the surface and damaging the sealing washer when leading to the switch rifle.
2. The valve port of the sprayer adopts a cone valve structure, and the cone valve structure can change the flow of the coating at the valve port by adjusting the length of the valve needle.
3. In order to adjust the opening size of the valve needle and the valve port, the invention designs the pneumatic flow adjusting switch, adopts a single-action piston structure, acts on a piston compression spring by the pressure of compressed air to control the opening and closing of the valve port, and in addition, in order to adjust the opening size of the valve needle, an adjustable piston is adopted, and the distance between the front end of the joint and the rear end of the piston is different by changing the position of a piston adjusting joint to adjust the opening size of the valve needle valve port.
4. The air cap structure design of the invention can blow out part of compressed air from the periphery of the valve port by arranging the first air passage port, thus leading the coating to reach a corner point under the condition of low pressure to assist in coating atomization, effectively shortening the coating atomization distance by arranging the second air passage port and arranging the inclined air outlet at the outlet position of the second air passage port, leading the coating to be completely atomized, simultaneously leading the coating direction to be changed and leading the coating to be attached on the inner wall of the pipeline.
5. The outer side wall of the piston seat is provided with the transverse groove structure for mounting the air inlet pipe and the feed pipe, so that the pipeline can be mounted inside, and the radial size of the sprayer is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
FIG. 1 is a schematic view of the structure of the invention
FIG. 2 is a schematic cross-sectional view of the compressed air connector of the present invention taken along the position thereof in use
Fig. 3 position air cap section view
FIG. 4 is a sectional view of the gun body
FIG. 5 is a schematic cross-sectional view taken at A in FIG. 1
FIG. 6 is a cross-sectional view of the piston seat
FIG. 7 is an isometric view of the piston seat
Reference numerals: 1-spray head component, 2-centering sleeve, 3-feeding component, 4-air feeding component, 5-flow regulating component, 6-connecting sleeve, 7-mounting plate, 8-to-be-sprayed pipe, 101-air cap, 102-valve seat, 103 valve needle, 104-gun body, 105-sealing gasket, 106-sealing ring I, 301-coating joint, 302-feeding pipe, 401-air feeding joint, 402-air feeding pipe, 501-piston seat, 502-piston, 503-piston regulating joint, 504-piston pull rod, 505-compression spring, 506-compression air joint, 507-compression air inlet pipe, 508-sealing ring II, 101 a-first air passage port, 101 b-second air passage port, 101 c-oblique air outlet, 104 a-air inlet passage port, 104 b-axial feeding port, 104 c-radial feeding port, 104 d-valve seat mounting hole, 501 a-piston mounting hole, 501 b-transverse air passage I, 501 c-vertical air passage and 501 d-transverse air passage II.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-7, a flow adjustable inner wall sprayer for small-diameter pipes comprises: the device comprises a spray head assembly 1 and a flow regulating assembly 5, wherein the spray head assembly 1 is used for spraying the inner wall of a pipeline, and the flow regulating assembly 5 is connected with the spray head assembly 1 and is used for regulating the flow of coating sprayed by the spray head assembly 1;
the flow rate adjusting assembly comprises a piston seat 501, a piston pull rod 504, a piston 502, a compression spring 505 and a piston adjusting joint 503, wherein the piston 502 can be arranged in the piston seat 501 in a driven manner, one end of the piston pull rod 504 is fixedly connected with the piston 502, the other end of the piston pull rod runs through the bottom of the piston seat 501 and is connected with the spray head assembly 1, and the piston adjusting joint 503 is detachably connected to the piston seat 501 and can control the moving distance of the piston 502 so as to control the flow rate of the coating sprayed by the spray head assembly 1;
the piston seat 501 is provided with a piston mounting hole 501a for being mounted in a matching manner with the piston 502, the piston 502 is mounted in the piston mounting hole 501a and is fixedly connected with a piston pull rod 504 along the direction of the bottom of the piston mounting hole 501a, and the piston pull rod 504 penetrates through the bottom of the piston seat 501 along the axial direction of the piston mounting hole 501a and is connected with the valve needle 103 of the spray head assembly 1 through a connecting sleeve 6; the piston adjusting joint 503 is installed in the piston installation hole 501a, the connection mode is threaded connection, and when the device is used, the limit moving distance of the piston 502 is controlled through the screwing depth of the piston adjusting joint 503, so that the size of the valve port opening of the valve seat 102 is adjusted, and further the output flow of the coating is controlled.
In this embodiment, the flow rate adjusting assembly 5 further includes a compression spring 505 and a compressed air connector 506, the piston seat 501 has an air supply channel for providing power for the movement of the piston 502, and a compressed air connector 506 is connected to an air inlet of the air supply channel, so that, in use, compressed air enters the bottom of the piston mounting hole 501a through the air supply channel at the compressed air connector 506 and pushes the piston 502 to move, so that the valve needle 103 is driven by the piston rod 504 to move to realize the disengagement of the valve needle from the valve seat;
the compressed air joint 506 is also connected with a compressed air inlet pipe 507, the air supply channel comprises a transverse air channel I501 b, a vertical air channel 501c and a transverse air channel II 501d, the transverse air channel I501 b is arranged in parallel with the piston mounting hole 501a, the transverse air channel II 501d is a hole formed in the bottom of the piston mounting hole 501a, and the transverse air channel I501 b and the transverse air channel II 501d are communicated through the vertical air channel 501c to form the air supply channel which is used for supplying air to the interior of the piston mounting hole 501a to push the piston 502 to move;
the compression spring 506 is located between the piston adjusting joint 503 and the piston 502, and two ends of the compression spring are respectively pressed by the piston adjusting joint 503 and the piston 502, and the piston 502 is reset by the compression spring 505 after the compressed air is cut off, so as to close the valve port.
In this embodiment, the inner wall sprayer for the small-diameter pipeline with the adjustable flow rate further comprises a centering sleeve 2, an air supply component 4 and a feeding component 3; the spray head assembly 1 is arranged in the centering sleeve 2 and is used for spraying the inner wall of a pipeline; the air supply assembly 4 is connected with the spray head assembly 1 and is used for supplying compressed air to the spray head assembly 1; the feeding assembly 3 is connected with the spray head assembly 1 and is used for conveying the coating to the spray head assembly 1;
the spray head assembly 1 comprises an air cap 101, a valve seat 102, a valve needle 103 and a gun body 104, wherein the air cap 101 is fixedly connected with the gun body 104 and forms a compressed air channel, the valve seat 102 is connected with the valve needle 103 in a matching manner and is connected with the gun body 104 to form a paint channel, and the compressed air and the paint are respectively intersected near an air outlet of the air cap 101 through the compressed air channel and the paint channel to finish paint atomization and spray coating on the inner wall of a pipeline;
the air feeding assembly 4 comprises a 401-air feeding joint and a 402-air feeding pipe; the feed assembly includes 301-a paint connection and 302-a feed tube.
In this embodiment, the air cap 101 has a first air passage opening 101a and a second air passage opening 101b, and the first air passage opening 101a and the second air passage opening 101b are arranged in parallel along the center line of the air cap 101; an inclined convex structure is arranged at a position, corresponding to the second air channel opening 101b, of the end face of the air outlet end of the air cap 101, the second air channel opening 101b extends into the inclined convex structure, an inclined air outlet 101c is formed in the inclined surface of the inclined convex structure, and the inclined air outlet 101c is communicated with the second air channel opening; through setting up first gas port mouth 101a, can let partial compressed air blow out around the valve port, can let coating also can reach the corner point under the condition of low pressure like this, supplementary coating atomizing through setting up second gas port mouth 101b to set up the slant gas outlet 101c in the exit position of second gas port mouth 101b and can effectively reduce short coating atomizing distance, make coating atomize completely, can make the coating direction change simultaneously, let coating adhere to on the pipeline inner wall.
In this embodiment, a valve seat mounting hole 104d for fitting and mounting a valve seat is formed in an end surface of the gun body 104 near one end of the air cap 101, the valve seat 102 is detachably connected to the valve seat mounting hole 104d during mounting, and a sealing gasket 105 is arranged at a position where the valve seat 102 is attached to an upper end surface of the valve seat mounting hole 104 d; wherein the valve seat 102 is detachably coupled to the valve seat mounting hole 104d, which is a screw coupling, and a gasket 105 is provided to prevent air leakage.
In this embodiment, the gun body 104 is provided with an air inlet passage port 104a, one end of the air inlet passage port 104a away from the air cap 101 is communicated with the air feeding assembly 4, and the other end of the air inlet passage port 104a is communicated with an air passage inside the air cap 101 to form the unblocked compressed air passage.
In this embodiment, the gun body 104 further has a feeding channel port, the feeding channel port includes an axial feeding port 104b and a radial feeding port 104c, the radial feeding port 104c communicates the axial feeding port 104b with the valve seat mounting hole 104d, the valve seat mounting hole 104d communicates with an internal channel port of the valve seat, one end of the axial feeding port 104b, which is far away from the air cap 101, is connected to the feeding assembly 3, and when the valve needle 103 is opened, a smooth coating channel is formed; wherein the radial feeding port 104c needs to be sealed after being processed at a position close to the outer wall.
In this embodiment, a conical discharge hole is formed at a valve port position inside the valve seat 102, one end of the valve needle 103 close to the valve port is provided with a conical head portion adapted to the conical discharge hole, and the other end of the valve needle 103 penetrates through the gun body 104 and is connected with the flow rate adjusting assembly 5, so that when the flow rate adjusting assembly 5 drives the valve needle 103 to move left and right to control opening and closing of the valve port of the valve seat 102; referring to fig. 5, the cone valve structure can change the flow rate of the coating at the valve port by adjusting the pulling length of the valve needle 103, and multiple experiments prove that the taper of the valve port is 12 degrees (at B in fig. 5), so that the erosion of the coating at the valve port can be reduced, and the service life of the valve port can be ensured.
In this embodiment, a lateral groove structure 501e for installing the air feeding pipe 402 and the feeding pipe 302 is formed on an outer side wall of the piston seat 501, and the air feeding pipe 402 and the feeding pipe 302 are respectively installed in the corresponding groove structures 501 e; this allows the conduit to be internally mounted, thereby reducing the radial size of the applicator.
In this embodiment, the centering sleeve 2 may be integrally formed, or may be formed by connecting an upper half and a lower half, and covers the spray head assembly, and when in use, the outer diameter of the centering sleeve 2 is adapted to the inner diameter of the pipe 8 to be sprayed; through setting up centering sleeve 2, guarantee that spraying all is on the center of pipeline at every turn, make the membrane thickness of spraying at every turn as even as possible, protection needle 103 and rifle body 104 prevent that coating from attaching to the surface and damaging the sealing washer when leading to the switch rifle.
In this embodiment, a connection fixing plate 9 is further connected between the piston seat 501 and the gun body 104 to reinforce the structure.
In this embodiment, the inner wall sprayer for the small-diameter automatic gas-assisted pipeline further comprises a mounting plate 7, and the mounting plate 7 is fixedly connected with the piston seat 501 and used for being mounted with a reciprocating machine during working.
The working principle of the utility model is as follows:
the sprayer is installed on the reciprocating machine through the installation plate 7, the proper centering sleeve 2 is selected according to the size of the pipeline, then the sprayer is fed into the pipeline through the reciprocating machine, when the sprayer is fed to the initial position of pipeline spraying by the reciprocating machine, the opening of compressed air is controlled through the control box, the compressed air enters the gun body 104 through the air feeding joint 401 and then is sprayed out from the middle of the air cap 101 and the hole on the inclined plane at the front end of the air cap 101; then, a spraying pump is started to convey the coating into a feeding pipe 302, and the coating enters the gun body 104 through a coating joint 301 and flows into a valve needle valve seat; then, an air source switch on the control box is turned on, compressed air pushes the piston 502 to move backwards after passing through the compressed air joint 506 and the air supply channel, then the piston pull rod 504 pulls the valve needle 103 to move backwards, so that the coating is sprayed out from the valve seat valve opening, the sprayed coating is impacted and atomized with the compressed air sprayed out from the middle of the air cap 101, and the atomized coating is attached to the inner wall of the pipeline after being impacted by the compressed air sprayed out from the inclined surface of the front end of the air cap.
Compared with the prior art, the utility model discloses can be better realize the spraying to the inner wall of small pipe diameter pipe, the spraying is effectual, has solved the technical problem of completion small pipe diameter pipe inner wall spraying that the current spraying mode mentioned in the background art can not be better.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (10)
1. A flow adjustable small-diameter pipeline inner wall sprayer is characterized by comprising: the spray head assembly is used for spraying the inner wall of a pipeline, and the flow regulating assembly is connected with the spray head assembly and used for regulating the flow of the coating sprayed by the spray head assembly;
the flow adjusting assembly comprises a piston seat, a piston pull rod, a piston, a compression spring and a piston adjusting joint, the piston can be arranged in the piston seat in a driven mode, one end of the piston pull rod is fixedly connected with the piston, the other end of the piston pull rod penetrates through the bottom of the piston seat, the other end of the piston pull rod is connected with the spray head assembly, the piston adjusting joint is detachably connected to the piston seat and can control the moving distance of the piston, and then the flow of the coating sprayed by the spray head assembly is controlled.
2. The adjustable flow small-diameter pipe inner wall sprayer according to claim 1, wherein: the flow regulating assembly further comprises a compression spring and a compressed air connector, the piston seat is provided with an air supply channel for providing power for the movement of the piston, and an air inlet of the air supply channel is connected with the compressed air connector; and the compression spring is positioned between the piston adjusting rod and the piston and is used for rebounding and resetting the piston.
3. The adjustable flow small-diameter pipe inner wall sprayer according to claim 1, wherein: the centering device also comprises a centering sleeve, an air supply assembly and a feeding assembly;
the air supply assembly is connected with the spray head assembly and is used for supplying compressed air to the spray head assembly;
the feeding assembly is connected with the spray head assembly and is used for conveying the coating to the spray head assembly;
the spray head assembly is arranged in the centering sleeve and comprises an air cap, a valve seat, a valve needle and a gun body, the air cap is fixedly connected with the gun body and forms a compressed air channel, the valve seat is connected with the valve needle in a matched mode and is connected with the gun body to form a coating channel, and compressed air and coating are intersected near an air outlet of the air cap through the compressed air channel and the coating channel respectively to finish coating atomization and spray coating on the inner wall of a pipeline.
4. The small-caliber pipeline inner wall sprayer with the adjustable flow rate as claimed in claim 3, is characterized in that: the air cap is provided with a first air passage port and a second air passage port, and the first air passage port and the second air passage port are arranged in parallel along the central line of the air cap; the position that the end face of giving vent to anger of air cap corresponds the second gas channel mouth is equipped with a slant protruding structure, the second gas channel mouth extends to inside the protruding structure of slant, just it has a slant gas outlet to open on the inclined plane of protruding structure, the slant gas outlet with second gas channel mouth intercommunication.
5. The small-caliber pipeline inner wall sprayer with the adjustable flow rate as claimed in claim 3, is characterized in that: the end face of the gun body, close to one end of the air cap, is provided with a valve seat mounting hole used for matching and mounting a valve seat, the valve seat is detachably connected into the valve seat mounting hole during mounting, and a sealing gasket is arranged at the position, which is attached to the upper end face of the mounting hole, of the valve seat.
6. The adjustable flow small diameter pipe inner wall sprayer of claim 5, wherein: an air inlet channel port is arranged on the gun body, one end of the air inlet channel port, which is far away from the air cap, is communicated with the air supply assembly, and the other end of the air inlet channel port is communicated to the inside of the air cap to form a smooth compressed air channel.
7. The adjustable flow small-diameter pipe inner wall sprayer according to claim 6, wherein: the gun body is further provided with a feeding passage port, the feeding passage port comprises an axial feeding port and a radial feeding port, the axial feeding port is communicated with the valve seat mounting hole through the radial feeding port, the valve seat mounting hole is communicated with an inner passage port of the valve seat, one end, far away from the air cap, of the axial feeding port is connected with the feeding assembly, and when the valve needle is opened, a smooth coating passage is formed.
8. The adjustable flow small diameter pipe inner wall sprayer of claim 7, wherein: the spray gun is characterized in that a conical discharge hole is formed in a valve port position in the valve seat, one end, close to the valve port, of the valve needle is provided with a conical head portion matched with the conical discharge hole, the other end of the valve needle penetrates through the gun body and is connected with the flow regulating assembly, and when the spray gun is used, the flow regulating assembly drives the valve needle to move left and right to control opening and closing of the valve port of the valve seat.
9. The adjustable flow small-diameter pipe inner wall sprayer according to claim 8, wherein: and a connecting and fixing plate is connected between the piston seat and the gun body.
10. The adjustable flow small diameter pipe inner wall sprayer of claim 1, wherein: the lateral wall of the piston seat is provided with a transverse groove structure for installing an air inlet pipe and an inlet pipe, and the air inlet pipe and the inlet pipe are respectively installed in the corresponding groove structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221991466.9U CN217796897U (en) | 2022-07-31 | 2022-07-31 | Flow-adjustable small-diameter pipeline inner wall sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221991466.9U CN217796897U (en) | 2022-07-31 | 2022-07-31 | Flow-adjustable small-diameter pipeline inner wall sprayer |
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| CN217796897U true CN217796897U (en) | 2022-11-15 |
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| CN202221991466.9U Active CN217796897U (en) | 2022-07-31 | 2022-07-31 | Flow-adjustable small-diameter pipeline inner wall sprayer |
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| Country | Link |
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| CN (1) | CN217796897U (en) |
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- 2022-07-31 CN CN202221991466.9U patent/CN217796897U/en active Active
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