A rotary water curtain valve

Abstract

The present invention relates to a rotary water curtain valve, comprising a spray head and a main body, wherein the spray head comprises an end cover, an end block, a discharge pipe, a rotary cylinder, a first pulley, a belt, a second pulley and a first bearing; an extension block is formed upward at the left end of the end block, the rotary cylinder is arranged at the rear side of the extension block, the rotating end of the rotary cylinder passes through an arc-shaped opening groove transversely and forward and extends to the front side of the extension block, the right end of the end block is detachably fixed to the front side of the end cover and the fixed position of the right end of the end block can be changed around the end cover on the same plane so that the rotary cylinder arranged at the left end of the end block can change its relative position with the end cover; the spray head of the present invention enables the coating to be sprayed in a non-atomized coating manner and form a fan-shaped coating, thereby completely solving the problem of easy generation of atomized flash points during coating and unclear edge lines at the coating location; and simplifies the operation; at the same time, effectively improves the coating utilization rate; in addition, it also expands the scope of application and greatly facilitates use.

Description

Technical Field

[0001] The invention relates to a rotary water curtain valve. Background Art

[0002] The water curtain valve is a non-atomizing thin-film coating valve installed on the coating machine and is specially designed for low-viscosity coatings. Existing water curtain valves all use atomizing coating, so it is easy to produce atomizing flash points and unclear edge lines at the coating during coating. In addition, a mask needs to be prepared in advance for high-speed coating, which makes the operation more cumbersome. At the same time, the atomizing coating method will cause more paint to be lost with the exhaust gas, resulting in a low utilization rate of the paint. In addition, the coating thickness cannot be adjusted, and the scope of application is small, which urgently needs to be solved. Summary of the invention

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a rotary water curtain valve which completely solves the problems of atomization flash points and unclear edge lines during coating, simplifies the operation, effectively improves the utilization rate of the coating, and can adjust the coating thickness to expand the scope of application. It can also effectively prevent the rotating cylinder from interfering with other components of the coating machine, thereby greatly facilitating the use.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a rotary water curtain valve, characterized in that it includes a nozzle and a main body, the nozzle includes an end cover, an end block, a discharge pipe, a rotary cylinder, a first pulley, a belt, a second pulley and a first bearing; an extension block is formed upward at the left end of the end block, the rotary cylinder is arranged at the rear side of the extension block, an arc-shaped opening groove is opened on the inner side of the extension block, the rotating end of the rotary cylinder passes through the arc-shaped opening groove horizontally forward and extends to the front side of the extension block, a first bolt distributed laterally is inserted through the upper part of the extension block, an arc-shaped groove is opened in the end block, a second bolt distributed laterally is inserted through the arc-shaped groove, the threaded ends of the first bolt and the second bolt are inserted and screwed into the front end of the rotary cylinder to detachably fix the rotary cylinder on the end block; the right end of the end block is detachably fixed to the front side of the end cover and can change the fixed position of the right end of the end block around the end cover on the same plane so that the rotary cylinder arranged at the left end of the end block can change its relative position with the end cover, so The discharge pipe is transversely inserted in the end cover, the front end of the discharge pipe passes through the right end of the end block and extends to the front side of the end block, the first bearing is sleeved on the discharge pipe and embedded in the rear side of the end cover, the first pulley and the second pulley are respectively sleeved and fixed on the rotating end of the rotary cylinder and the discharge pipe and are both arranged on the front side of the end block, the belt is sleeved on the first pulley and the second pulley, the main body includes a feed block, an adjustment block, a bottom cover, a differential head and a second bearing; the feed block is detachably fixed to the rear side of the end cover The adjusting block is detachably fixed on the rear side of the feed block, the bottom cover is detachably fixed on the rear side of the adjusting block, and the differential head is sealably plugged on the rear side of the bottom cover; a discharge cavity is opened on the front side of the feed block, a feed hole is opened on the inner wall of one side of the discharge cavity, the rear end of the discharge pipe is sealably inserted into the discharge cavity, the second bearing sleeve is arranged on the discharge pipe and embedded in the opening of the discharge cavity, a step ring is formed outwardly on the outer wall of the discharge pipe, and the step ring is arranged between the first bearing and the second bearing.

[0005] Preferably, the main body also includes an adjusting component, which includes a core rod, a spring and a first sealing ring. A pressure regulating chamber is opened on the rear side of the adjusting block, a first air channel is opened on an outer wall of one side of the adjusting block, and a second air channel is opened between the inner wall of the first air channel and the bottom surface of the pressure regulating chamber. The core rod is transversely interspersed in the discharge pipe, the feed block and the adjusting block and is concentrically distributed with the discharge chamber. A piston ring is formed outwardly at the rear end of the core rod, and the piston ring is concentrically arranged in the pressure regulating chamber; the first sealing ring is embedded in the outer wall of the piston ring, and the outer wall of the first sealing ring is sealingly fitted on the inner wall of the pressure regulating chamber, the spring is sleeved on the outside of the rear end of the core rod, the front end of the spring is pressed tightly against the rear end face of the piston ring, the rear end of the spring is embedded in the front inner side of the bottom cover, and the telescopic end of the differential head is inserted into the spring and pressed tightly against the rear end of the core rod.

[0006] Preferably, the main body also includes a feed connector and a solenoid valve, the feed connector is inserted into one side of the feed block and is interconnected with the outer end opening of the feed hole, the solenoid valve is fixed to the outside of the regulating block, and the air outlet of the solenoid valve is interconnected with the outer end opening of the first air channel.

[0007] Preferably, the spray head also includes a nozzle assembly, which includes a sleeve, a nut, a sealing gasket, a nozzle sleeve and a nozzle head; the rear end of the sleeve is concentrically inserted into the front end of the discharge pipe and sleeved on the front end of the core rod, the nut is threaded on the front end of the sleeve, the sealing gasket is concentrically embedded in the front end of the sleeve, the nozzle sleeve is inserted in the nut and concentrically arranged with the sealing gasket, the nozzle head is embedded in the front end of the nozzle sleeve, and the front end of the core rod is formed with a conical head, which is concentrically inserted into the rear end opening of the sealing gasket and cooperates with the rear end opening of the sealing gasket.

[0008] Preferably, a V-shaped groove is provided at the front end of the nozzle head, and correspondingly, two notches are provided at the front end of the nozzle sleeve, which are arranged diagonally opposite to each other, and the two notches respectively cooperate with the two ends of the V-shaped groove; a bell mouth is provided at the center of the rear end of the nozzle head, and a discharge port is provided between the bottom of the bell mouth and the bottom of the V-shaped groove.

[0009] Preferably, the adjusting assembly further comprises a sealing sleeve, a second sealing sleeve and a third sealing ring, the sealing sleeve being arranged outside the core rod and sealingly embedded inside the front side of the adjusting block, the second sealing sleeve and the third sealing ring being both sleeved outside the core rod and respectively embedded inside the bottom surface of the pressure regulating chamber and the front side of the feed block, the front end of the sealing sleeve being pressed tightly against the rear end of the third sealing ring.

[0010] Preferably, a base assembly is also provided under the main body, and the base assembly includes a bottom plate, a stop block, a pressure plate, a trapezoidal block and a screw, the trapezoidal block is provided above the bottom plate, the stop block is fixed to the front side of the bottom plate and provided at the front side of the trapezoidal block, a plurality of first inclined blocks are formed upward on the left side of the bottom plate, the inner sides of the plurality of first inclined blocks are all fitted on the left outer wall of the trapezoidal block, the pressure plate is provided on the right side of the bottom plate, the screws include two, the two screws are both laterally inserted in the pressure plate, the threaded ends of the two screws are both inserted and screwed into the inside of the right side of the bottom plate to detachably fix the pressure plate to the right side of the bottom plate.

[0011] Preferably, a plurality of second inclined blocks are formed outwardly from the upper side of the pressure plate, the inner sides of the plurality of second inclined blocks are all fitted on the right outer wall of the trapezoidal block, a column is formed outwardly from the top of the trapezoidal block, and the top of the column is fixed to the lower side of the adjustment block.

[0012] Compared with the prior art, the advantages of the present invention are: the nozzle of the present invention enables the paint to be sprayed in a non-atomized coating manner and forms a fan-shaped coating, thereby completely solving the problems of atomized flash points that are easily generated during coating and unclear edge lines at the coating location; and no mask needs to be prepared in advance during high-speed coating to simplify the operation; at the same time, the non-atomized coating method also greatly reduces the generation of exhaust gas, thereby greatly reducing the loss of paint to effectively improve the utilization rate of the paint; in addition, the coating thickness can be adjusted with the help of an adjustment component to expand the scope of application; it is worth mentioning that the relative position of the rotating cylinder and the end cover can be changed, thereby effectively preventing the rotating cylinder from interfering with other components of the coating machine, thereby greatly facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a right front side structural diagram of the present invention;

[0014] Figure 2 It is a front cross-sectional structural diagram of the present invention;

[0015] Figure 3 It is a top view cross-sectional structural diagram of the present invention;

[0016] Figure 4 It is a left rear structural diagram of the base assembly of the present invention. DETAILED DESCRIPTION

[0017] like Figures 1 to 4As shown, a rotary water curtain valve comprises a nozzle 1 and a main body 2, wherein the nozzle 1 comprises an end cover 11, an end block 12, a discharge pipe 13, a rotary cylinder 14, a first pulley 15, a belt 16, a second pulley 17 and a first bearing 114; an extension block 123 is formed upwardly at the left end of the end block 12, the rotary cylinder 14 is arranged at the rear side of the extension block 123, an arc-shaped opening groove 121 is opened on the inner side of the extension block 123, the rotating end of the rotary cylinder 14 passes through the arc-shaped opening groove 121 transversely forward and extends to the front side of the extension block 123, and a first spiral groove 123 is interspersed with a transversely distributed first spiral groove 123 on the upper part of the extension block 123. The end block 12 is provided with an arc groove 122, and a second bolt 115 is inserted in the arc groove 122. The threaded ends of the first bolt 18 and the second bolt 115 are inserted and screwed into the front end of the rotary cylinder 14 to detachably fix the rotary cylinder 14 to the end block 12; the right end of the end block 12 is detachably fixed to the front side of the end cover 11 and can change the fixed position of the right end of the end block 12 around the end cover 11 on the same plane so that the rotary cylinder 14 arranged at the left end of the end block 12 can change its relative position with the end cover 11, and the discharge pipe 13 is arranged in the end cover 11. 1, the front end of the discharge pipe 13 passes through the right end of the end block 12 and extends to the front side of the end block 12, the first bearing 114 is sleeved on the discharge pipe 13 and embedded in the rear side of the end cover 11, the first pulley 15 and the second pulley 17 are respectively sleeved and fixed on the rotating end of the rotary cylinder 14 and the discharge pipe 13 and are both arranged on the front side of the end block 12, and the belt 16 is sleeved on the first pulley 15 and the second pulley 17; the main body 2 includes a feed block 21, an adjustment block 23, a bottom cover 24, a differential head 25 and a second bearing 27; the feed block 21 is detachably fixed to the rear side of the end cover 11, and the adjustment block 23 is detachably fixed to the rear side of the end cover 11. The discharging device 21 is fixed on the rear side of the feed block 21, the bottom cover 24 is detachably fixed on the rear side of the adjusting block 23, and the differential head 25 is sealed and plugged on the rear side of the bottom cover 24; a discharge cavity 2101 is opened on the front side of the feed block 21, and a feed hole 2102 is opened on the inner wall of one side of the discharge cavity 2101. The rear end of the discharge pipe 13 is sealed and inserted into the discharge cavity 2101, and the second bearing 27 is sleeved on the discharge pipe 13 and embedded in the opening of the discharge cavity 2101. A step ring 131 is formed outward on the outer wall of the discharge pipe 13, and the step ring 131 is arranged between the first bearing 114 and the second bearing 27.

[0018] The main body 2 also includes an adjustment component, which includes a core rod 28, a spring 210 and a first sealing ring 211. A pressure regulating chamber 232 is provided at the rear side of the adjustment block 23. A first air channel 231 is provided on the outer wall of one side of the adjustment block 23. A second air channel 233 is provided between the inner wall of the first air channel 231 and the bottom surface of the pressure regulating chamber 232. The core rod 28 is transversely inserted in the discharge pipe 13, the feed block 21 and the adjustment block 23 and is concentrically distributed with the discharge chamber 2101. The rear end of the core rod 28 is formed with an active The plug ring 281 and the piston ring 281 are concentrically arranged in the pressure regulating chamber 232; the first sealing ring 211 is embedded in the outer wall of the piston ring 281, and the outer wall of the first sealing ring 211 is sealed and fitted on the inner wall of the pressure regulating chamber 232; the spring 210 is sleeved on the outside of the rear end of the core rod 28, and the front end of the spring 210 is pressed tightly against the rear end face of the piston ring 281, and the rear end of the spring 210 is embedded in the front side of the bottom cover 24, and the telescopic end of the differential head 25 is inserted into the spring 210 and pressed tightly against the rear end of the core rod 28.

[0019] The main body 2 also includes a feed connector 22 and a solenoid valve 26. The feed connector 22 is inserted into one side of the feed block 21 and is interconnected with the outer end opening of the feed hole 2102. The solenoid valve 26 is fixed to the outside of the regulating block 23, and the air outlet of the solenoid valve 26 is interconnected with the outer end opening of the first air duct 231.

[0020] The nozzle 1 also includes a nozzle assembly, which includes a sleeve 19, a nut 110, a sealing gasket 111, a nozzle sleeve 112 and a nozzle head 113; the rear end of the sleeve 19 is concentrically inserted into the front end of the discharge pipe 13 and sleeved on the front end of the core rod 28, the nut 110 is sleeved and threaded on the front end of the sleeve 19, the sealing gasket 111 is concentrically embedded in the front end of the sleeve 19, the nozzle sleeve 112 is inserted in the nut 110 and concentrically arranged with the sealing gasket 111, the nozzle head 113 is embedded in the front end of the nozzle sleeve 112, and the front end of the core rod 28 is formed with a conical head 282, which is concentrically inserted into the rear end opening of the sealing gasket 111 and cooperates with the rear end opening of the sealing gasket 111.

[0021] A V-shaped groove 1131 is provided at the front end of the nozzle head 113, and correspondingly, two notches 1121 are provided at the front end of the nozzle sleeve 112, and the two notches 1121 respectively cooperate with the two ends of the V-shaped groove 1131; a bell mouth 1132 is provided at the center of the rear end of the nozzle head 113, and a discharge port 1133 is provided between the bottom of the bell mouth 1132 and the bottom of the V-shaped groove 1131.

[0022] The adjusting assembly also includes a sealing sleeve 29, a second sealing sleeve 212 and a third sealing ring 213. The sealing sleeve 29 is arranged outside the core rod 28 and is sealed and embedded in the front side of the adjusting block 23. The second sealing sleeve 212 and the third sealing ring 213 are both sleeved outside the core rod 28 and are respectively embedded in the bottom surface of the pressure regulating chamber 232 and the front side of the feed block 21. The front end of the sealing sleeve 29 is pressed tightly against the rear end of the third sealing ring 213.

[0023] A base assembly is also provided at the bottom of the main body 2, and the base assembly includes a bottom plate 3, a stopper 4, a pressure plate 5, a trapezoidal block 6 and a screw 7. The trapezoidal block 6 is arranged above the bottom plate 3, and the stopper 4 is fixed to the front side of the bottom plate 3 and is arranged on the front side of the trapezoidal block 6. A plurality of first inclined blocks 31 are formed upward on the left side of the bottom plate 3, and the inner sides of the plurality of first inclined blocks 31 are all fitted on the left outer wall of the trapezoidal block 6. The pressure plate 5 is arranged on the right side of the bottom plate 3, and the screw 7 includes two. The two screws 7 are both arranged in the pressure plate 5 transversely, and the threaded ends of the two screws 7 are both inserted and screwed into the right inner side of the bottom plate 3, so that the pressure plate 5 is detachably fixed to the right side of the bottom plate 3, and a plurality of second inclined blocks 51 are formed outwardly on the upper side of the pressure plate 5, and the inner sides of the plurality of second inclined blocks 51 are all fitted on the right outer wall of the trapezoidal block 6. A column 61 is formed outwardly on the top of the trapezoidal block 6, and the top of the column 61 is fixed to the lower side of the adjusting block 23.

[0024] Working principle: fix the bottom plate 3 on the mobile device, and then use the base assembly to place the main body 2 on the mobile device, and align the nozzle assembly in the nozzle 1 with the product to be sprayed; pass the paint into the feed hole 2102 through the feed joint 22, and then enter between the discharge pipe 13 and the core rod 28 through the discharge chamber 2101, and then enter the sleeve 19; then, pass the high-pressure air into the first air channel 231 through the solenoid valve 26, and then enter the pressure regulating chamber 232 through the second air channel 233, and then push the piston ring 281 to move slightly backward in the pressure regulating chamber 232 and compress the spring 210, thereby driving the core rod 28 to move slightly backward, so that the conical head 282 and the sealing gasket 11 1, a gap gradually appears at the rear end opening, so that the paint in the sleeve 19 can enter the sealing gasket 111, and then enter the bell mouth 1132 through the nozzle sleeve 112. The paint is further accelerated under the action of the bell mouth 1132 and enters the V-shaped groove 1131 through the discharge port 1133, and finally sprayed out in a non-atomized manner; in addition, the rotating end of the rotating cylinder 14 is driven to rotate a certain angle, and then the discharge pipe 13 is rotated a certain angle in the feed block 21 and the end block 12 by means of the first pulley 15, the belt 16 and the second pulley 17, thereby driving the nozzle assembly to rotate a certain angle so that the paint forms a fan-shaped coating on the product.

[0025] Twist the spiral end of the micrometer head 25 to adjust the lateral position of the telescopic end of the micrometer head 25, and then adjust the lateral position of the core rod 28, so as to adjust the size of the gap between the conical head 282 and the rear end opening of the sealing gasket 111, thereby adjusting the amount of paint entering the sealing gasket 111, and then adjusting the coating thickness.

[0026] If the tightness of the belt 16 needs to be adjusted, first loosen the first bolt 18 and the second bolt 115, then rotate the rotary cylinder 14 around the first bolt 18 to make the second bolt 115 slide along the arc groove 122, thereby driving the rotating end of the rotary cylinder 14 to move synchronously in the arc opening groove 121 to adjust the center distance between the rotating end of the rotary cylinder 14 and the discharge pipe 13, so as to tighten or loosen the belt 16. After adjustment, tighten the first bolt 18 and the second bolt 115 again.

[0027] Slightly loosen the two screws 7 so that the inner sides of the several second oblique blocks 51 on the pressure plate 5 are slightly away from the right outer wall of the trapezoidal block 6, and then the trapezoidal block 6 can be quickly detached from the base plate 3 by moving the trapezoidal block 6 backward. During installation, just move the trapezoidal block 6 forward until the front end of the trapezoidal block 6 is against the stop block 4. At this time, the inner sides of the several first oblique blocks 31 are all in contact with the left outer wall of the trapezoidal block 6, and the several second oblique blocks 51 are all located on the right side of the trapezoidal block 6 and are a certain distance apart. Then slowly tighten the two screws 7 until the inner sides of the several second oblique blocks 51 are pressed against the right outer wall of the trapezoidal block 6 and the two screws 7 cannot be screwed in any further. At this point, the fixation of the trapezoidal block 6 is completed.

[0028] If the rotating cylinder 14 interferes with other parts of the coating machine after the main body 2 is installed on the coating machine, the fixed position of the right end of the end block 12 relative to the end cover 11 can be changed so that the rotating cylinder 14 can change its position around the end cover 11, thereby perfectly eliminating its interference with other parts of the coating machine for easy use.

[0029] The nozzle 1 of the present invention enables the paint to be sprayed in a non-atomized coating manner and forms a fan-shaped coating, thereby completely solving the problems of atomized flash points that are easily generated during coating and unclear edge lines at the coating location; and no mask needs to be prepared in advance during high-speed coating to simplify the operation; at the same time, the non-atomized coating method also greatly reduces the generation of exhaust gas, thereby greatly reducing the loss of paint to effectively improve the utilization rate of the paint; in addition, the coating thickness can be adjusted with the aid of an adjustment component to expand the scope of application; it is worth mentioning that the relative position of the rotating cylinder 14 and the end cover 11 can be changed, thereby effectively preventing the rotating cylinder 14 from interfering with other components of the coating machine, thereby greatly facilitating use.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary water curtain valve, characterized in that: The invention comprises a nozzle and a main body, wherein the nozzle comprises an end cover, an end block, a discharge pipe, a rotary cylinder, a first pulley, a belt, a second pulley and a first bearing; an extension block is formed upward at the left end of the end block, the rotary cylinder is arranged at the rear side of the extension block, an arc-shaped opening groove is provided on the inner side of the extension block, the rotating end of the rotary cylinder passes through the arc-shaped opening groove transversely and extends to the front side of the extension block, a first bolt distributed transversely is inserted through the upper part of the extension block, an arc-shaped groove is provided in the end block, a second bolt distributed transversely is inserted through the arc-shaped groove, the threaded ends of the first bolt and the second bolt are both inserted and screwed into the front end of the rotary cylinder to detachably fix the rotary cylinder on the end block; the right end of the end block is detachably fixed to the front side of the end cover and the fixed position of the right end of the end block can be changed around the end cover on the same plane so that the rotary cylinder arranged at the left end of the end block can change its relative position with the end cover, the discharge pipe is transversely inserted in ... The front end of the material pipe passes through the right end of the end block and extends to the front side of the end block, the first bearing sleeve is arranged on the discharge pipe and embedded in the rear side of the end cover, the first pulley and the second pulley are respectively sleeved and fixed on the rotating end of the rotating cylinder and the discharge pipe and are both arranged on the front side of the end block, the belt sleeve is arranged on the first pulley and the second pulley, the main body comprises a feed block, an adjusting block, a bottom cover, a differential head and a second bearing; the feed block is detachably fixed to the rear side of the end cover, the adjusting block is detachably fixed to the rear side of the feed block, the bottom cover is detachably fixed to the rear side of the adjusting block, and the differential head is sealably plugged into the rear side of the bottom cover; a discharge cavity is opened on the front side of the feed block, a feed hole is opened on one side inner wall of the discharge cavity, the rear end of the discharge pipe is sealably inserted into the discharge cavity, the second bearing sleeve is arranged on the discharge pipe and embedded in the opening of the discharge cavity, a step ring is formed outwardly on the outer wall of the discharge pipe, and the step ring is arranged between the first bearing and the second bearing; The main body also includes an adjusting component, which includes a core rod, a spring and a first sealing ring. A pressure regulating chamber is provided on the rear side of the adjusting block, a first air channel is provided on an outer wall of one side of the adjusting block, and a second air channel is provided between the inner wall of the first air channel and the bottom surface of the pressure regulating chamber. The core rod is transversely interspersed in the discharge pipe, the feed block and the adjusting block and is concentrically distributed in the discharge chamber. A piston ring is formed outwardly at the rear end of the core rod, and the piston ring is concentrically arranged in the pressure regulating chamber; the first sealing ring is embedded in the outer wall of the piston ring, and the outer wall of the first sealing ring is sealingly fitted on the inner wall of the pressure regulating chamber; the spring is sleeved on the outside of the rear end of the core rod, and the front end of the spring is pressed tightly against the rear end face of the piston ring, and the rear end of the spring is embedded in the front inner side of the bottom cover, and the telescopic end of the differential head is inserted into the spring and pressed tightly against the rear end of the core rod; The spray head also includes a nozzle assembly, which includes a sleeve, a nut, a sealing gasket, a nozzle sleeve and a nozzle head; the rear end of the sleeve is concentrically inserted into the front end of the discharge pipe and sleeved on the front end of the core rod, the nut is threaded on the front end of the sleeve, the sealing gasket is concentrically embedded in the front end of the sleeve, the nozzle sleeve is inserted in the nut and concentrically arranged with the sealing gasket, the nozzle head is embedded in the front end of the nozzle sleeve, and the front end of the core rod is formed with a conical head, which is concentrically inserted into the rear end opening of the sealing gasket and cooperates with the rear end opening of the sealing gasket; A V-shaped groove is provided at the front end of the nozzle head, and correspondingly, two notches are provided at the front end of the nozzle sleeve, which are arranged diagonally to each other, and the two notches respectively cooperate with the two ends of the V-shaped groove; a bell mouth is provided at the center of the rear end of the nozzle head, and a discharge port is provided between the bottom of the bell mouth and the bottom of the V-shaped groove.

2. A rotary water curtain valve according to claim 1, characterized in that: The main body also includes a feed connector and a solenoid valve. The feed connector is plugged into one side of the feed block and communicates with the outer end opening of the feed hole. The solenoid valve is fixed to the outside of the regulating block, and the air outlet of the solenoid valve is communicated with the outer end opening of the first air channel.

3. A rotary water curtain valve according to claim 1, characterized in that: The regulating assembly further comprises a sealing sleeve, a second sealing sleeve and a third sealing ring. The sealing sleeve is arranged outside the core rod and is sealingly embedded in the front side of the regulating block. The second sealing sleeve and the third sealing ring are both sleeved outside the core rod and are respectively embedded in the bottom surface of the pressure regulating chamber and the front side of the feed block. The front end of the sealing sleeve is tightly pressed against the rear end of the third sealing ring.

4. A rotary water curtain valve according to claim 1, characterized in that: A base assembly is also provided under the main body, and the base assembly includes a bottom plate, a stopper, a pressure plate, a trapezoidal block and a screw. The trapezoidal block is provided above the bottom plate, and the stopper is fixed to the front side of the bottom plate and provided at the front side of the trapezoidal block. A plurality of first inclined blocks are formed upward on the left side of the bottom plate, and the inner sides of the plurality of first inclined blocks are all fitted on the left outer wall of the trapezoidal block. The pressure plate is provided on the right side of the bottom plate, and the screws include two, and the two screws are both laterally inserted in the pressure plate, and the threaded ends of the two screws are both inserted and screwed into the inner right side of the bottom plate to detachably fix the pressure plate to the right side of the bottom plate.

5. A rotary water curtain valve according to claim 4, characterized in that: A plurality of second inclined blocks are formed outwardly from the upper side of the pressure plate, and the inner sides of the plurality of second inclined blocks are all fitted on the right outer wall of the trapezoidal block. A column is formed outwardly from the top of the trapezoidal block, and the top of the column is fixed to the lower side of the adjustment block.

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