Adjustable water spraying device for cleaning heliostat mirror

Abstract

The utility model relates to tower type photo-thermal power generation plate cleaning technical field especially, a kind of adjustable water spraying device for heliostat mirror surface cleaning, its structure includes: including support assembly, the disc brush being arranged below support assembly, the water pipe support being fixedly connected with support assembly, the water pipe fixed plate being fixed in the end of water pipe support and with the water pipe of spray head, water pipe fixed plate is equipped with the fixed component for embracing positioning water pipe, fixed component includes U type clip supported in the bottom of water pipe and clamping piece fixedly arranged in the lower part of water pipe fixed plate with opening downward;U type clip side end surface is uniformly provided with first protruding tooth;The utility model replaces traditional friction by using end surface tooth engagement locking mode, relies on tooth surface engagement to bear circumferential torsional force, locking reliability is greatly improved, can effectively resist the angular displacement caused by water pressure pulsation and disc brush vibration, long-term operation water spraying angle is stable, and cleaning effect consistency is good.

Description

Technical Field

[0001] This utility model relates to the field of tower solar thermal power generation panel cleaning technology, and in particular to an adjustable water spray device for cleaning the surface of a heliostat. Background Technology

[0002] Tower solar thermal power generation is a concentrated solar power (CSP) technology consisting of a centrally located solar collector tower and a surrounding mirror field. The mirror field contains thousands of solar reflectors that reflect and concentrate sunlight onto the collector tower. Molten salt inside the tower is heated to 500-1500°C, converting solar energy into heat energy, which then drives a generator to produce electricity. The cleanliness of the mirrors directly affects the power generation efficiency; therefore, reliable methods must be employed to ensure the cleanliness of these mirrors. Common cleaning methods include dry brushing, water washing, and a combination of brushing and washing. Dry brushing is suitable for areas with severe water shortages and where dirt easily separates from the mirror surface. However, the dust generated after dry brushing can cause secondary contamination of the cleaned area, resulting in incomplete cleaning. Water washing requires a large amount of water, leading to waste, and watermarks are easily left on the mirror surface, reducing reflection efficiency. The combination of brushing and washing effectively cleans various stains with a suitable amount of water while leaving no watermarks.

[0003] A heliostat cleaning device is disclosed in patent document CN111112184A, which includes a frame 1 with a connecting seat at the middle of its upper side, connected to a mounting position on a hydraulic boom; a brush cleaning device, which is uniformly arranged along the length of the frame 1, including a mounting plate fixed to the frame 1 and a disc-shaped brush connected to the mounting plate via an adjustment device; a spray device, which includes connecting rods 1 uniformly arranged along the length of the frame 1, the connecting rods 1 being perpendicular to the length of the frame 1, connecting rods 2 being fixed at both ends of the connecting rods 1, the lower ends of several connecting rods 2 on the same side being connected to spray pipes 1, two spray pipes 1 being symmetrically arranged on both sides above several brushes, the spray pipes 1 being parallel to the length of the frame 1; and a parallelism detection device, which is disposed on the frame 1, including multiple ranging sensors uniformly arranged along the length of the frame 1 and a single ranging sensor arranged along the cleaning direction. In practical applications, the following shortcomings still exist: Currently, in heliostat cleaning equipment, the water spray pipes and nozzles are mostly fixed installations. The spray angle cannot be flexibly adjusted according to the installation tilt angle and curvature of the heliostat, which easily leads to problems such as insufficient water immersion in certain areas, incomplete cleaning of stains, or excessive water spray leaving watermarks in certain areas, making it difficult to guarantee the cleaning effect. Some adjustable spray structures use U-shaped clips to fix the water pipes by friction clamping, relying on the friction force of tightened bolts to restrict the rotation of the water pipes. However, during the cleaning operation, water pressure pulsation and continuous vibration generated by the rotation of the disc brush can cause the clamping surface to gradually slip, causing the preset spray angle to deviate, requiring frequent manual calibration. Moreover, adjusting the angle requires completely loosening the bolts, which is cumbersome and results in low on-site maintenance efficiency, failing to meet the debugging needs of large-scale equipment in the heliostat field. Utility Model Content

[0004] This invention provides an adjustable water spray device for cleaning the surface of a heliostat, which can effectively solve the above-mentioned problems.

[0005] This utility model is implemented as follows: An adjustable water spray device for cleaning a heliostat mirror includes: a support assembly, a disc brush located below the support assembly, a water pipe support fixedly connected to the support assembly, a water pipe fixing plate fixed to the end of the water pipe support, and a water pipe with a spray nozzle. The water pipe fixing plate is provided with a fixing component for circumferentially positioning the water pipe. The fixing component includes a U-shaped clamp supporting the bottom of the water pipe and a clamping member with its opening facing downwards, fixed to the lower part of the water pipe fixing plate. The U-shaped clamp has first protruding teeth evenly distributed on one end face. The water pipe... A limiting ring is fixedly provided, and the end face of the limiting ring facing the first protruding tooth is evenly distributed with second protruding teeth that can mesh with the first protruding tooth; a first elastic element is sleeved on the outside of the water pipe, and the first elastic element is used to push the limiting ring to move the water pipe axially toward the first protruding tooth side, so that the second protruding tooth and the first protruding tooth are engaged to restrict the circumferential rotation of the water pipe; the water pipe can move axially against the elastic force of the first elastic element under the action of external force, so that the second protruding tooth and the first protruding tooth are disengaged, and at this time the water pipe can rotate circumferentially to adjust the spray angle of the nozzle.

[0006] As a further improvement, the clamping member has a U-shaped structure, with the opening facing downwards and fixed to the bottom of the water pipe fixing plate, and is positioned opposite to the U-shaped clip to hug the water pipe.

[0007] As a further improvement, the first elastic element is a compression spring, and two sets of U-shaped clips and limiting rings are provided respectively. The two ends of the first elastic element abut against the end of the clamping member and the end of the limiting ring away from the second protrusion.

[0008] As a further improvement, a bearing is fitted on the water pipe, the inner ring of the bearing is fixedly connected to the water pipe, and a sliding sleeve is fixed on the outer ring of the bearing; a driving column is radially protruding from the outer wall of the sliding sleeve; a sliding groove extending along the axial direction of the water pipe is opened on the water pipe fixing plate and the clamping member, and the driving column passes through the sliding groove and can slide back and forth along the axial direction of the sliding groove to drive the water pipe to move axially.

[0009] As a further improvement, the water pipe fixing plate is provided with a rotary drive component, the bottom plate of the rotary drive component is provided with a drive rail, and the drive column extends into the drive rail; when the rotary drive component rotates, it drives the drive column to slide along the slide groove through the drive rail, thereby driving the water pipe to move axially so that the second convex tooth disengages from the first convex tooth.

[0010] As a further improvement, the sidewall of the rotary drive is circumferentially distributed with ratchet teeth, and one side of the water pipe fixing plate is provided with a check element that engages with the ratchet teeth in one direction; a sliding rod is connected to the side of the check element away from the rotary drive, and an operating element is provided at the outer end of the sliding rod; a guide element is provided on the water pipe fixing plate for the sliding rod to slide, and a second elastic element is sleeved on the outer side of the sliding rod. The second elastic element pushes the check element to maintain engagement with the ratchet teeth to restrict the rotary drive from rotating in the opposite direction.

[0011] As a further improvement, the outer wall of the rotary drive component is provided with anti-slip protrusions distributed circumferentially.

[0012] As a further improvement, the two ends of the U-shaped clip are provided with external threads. After the two ends of the U-shaped clip pass through the water pipe fixing plate, they are locked and fixed by nuts.

[0013] As a further improvement, the drive track is an arc-shaped groove formed on the disk surface of the rotary drive component, which can push the drive column to slide along the slide groove when the rotary drive component rotates.

[0014] The beneficial effects of this utility model are: 1. This utility model replaces the traditional friction clamping with a locking method using end face tooth meshing. Relying on the tooth meshing to bear the circumferential torsional force, the locking reliability is greatly improved. It can effectively resist the angle deviation caused by water pressure pulsation and disc brush vibration. The spray angle is stable during long-term operation, and the cleaning effect is consistent.

[0015] 2. This utility model can be unlocked simply by moving the water pipe axially, and the nozzle angle can be adjusted by rotating the water pipe. After being released, it automatically resets and engages again by the first elastic element. The operation is simple and requires no tools, which greatly improves the efficiency of on-site debugging and maintenance.

[0016] 3. This utility model converts the rotation operation into the axial linear movement of the water pipe through the rotary drive component and the arc-shaped drive track, making the adjustment process labor-saving and controllable; with the ratchet anti-reverse structure, it can automatically maintain the position in the unlocked state without the need for continuous force, and a single person can complete the angle adjustment operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an adjustable water spray device for cleaning the surface of a heliostat provided by this utility model; Figure 2 This is a structural schematic diagram of the water pipe support, water pipe, and water pipe adjustment mechanism of this utility model; Figure 3 This is a schematic diagram of the water pipe regulating mechanism of this utility model; Figure 4 This is a structural schematic diagram of the first and second convex teeth of this utility model in the separated state; Figure 5 This is a schematic diagram of the connection between the sliding sleeve, the drive column, and the water pipe of this utility model; Figure 6 This is a schematic diagram of the structure of the rotary drive component and the water pipe fixing plate of this utility model; Figure 7 This is a schematic diagram of the ratchet and anti-reverse component of this utility model in the meshing state; Figure 8 This is a schematic diagram of the drive track structure of this utility model.

[0019] In the diagram: 1. Bracket assembly; 2. Disc brush; 3. Water pipe bracket; 4. Water pipe fixing plate; 5. Water pipe; 6. Nozzle; 7. U-shaped clip; 8. Clamping component; 9. First protruding tooth; 10. Limiting ring; 11. Second protruding tooth; 12. First elastic component; 13. Bearing; 14. Sliding sleeve; 15. Drive column; 16. Slide groove; 17. Rotary drive component; 18. Drive track; 19. Ratchet; 20. Anti-reverse component; 21. Sliding rod; 22. Operating component; 23. Guide component; 24. Second elastic component; 25. Anti-slip protrusion; 26. Nut. Detailed Implementation

[0020] All embodiments of this utility model are intended to fall within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating that the purpose, technical solution, and advantages of the method are clearer. The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort indicate or imply the relative importance of the indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In existing heliostat cleaning equipment, the water spray pipes and nozzles are mostly fixed, and the spray angle cannot be flexibly adjusted according to the installation tilt angle and surface curvature of the heliostat. This easily leads to problems such as insufficient water penetration in some areas, incomplete cleaning of stains, or excessive water spray leaving watermarks in others, making it difficult to guarantee the cleaning effect. Some adjustable spray structures use U-shaped clamps to fix the water pipes, relying on the friction of tightened bolts to restrict the rotation of the water pipes. However, during the cleaning operation, water pressure pulsation and continuous vibration generated by the rotation of the disc brush can cause the clamping surface to gradually slip, causing the preset spray angle to deviate, requiring frequent manual calibration. Moreover, adjusting the angle requires completely loosening the bolts, which is cumbersome and inefficient for on-site maintenance, and cannot meet the commissioning requirements of large-scale equipment in heliostat fields. To solve the above technical problems, this paper proposes the following technical solution: Reference Figures 1-8 As shown, an adjustable water spray device for cleaning the surface of a heliostat includes a support assembly 1, a disc brush 2, a water pipe support 3, a water pipe fixing plate 4, a water pipe 5, and spray nozzles 6. The disc brush 2 is installed below the support assembly 1 and is used to brush the surface of the heliostat; the water pipe support 3 is fixedly connected to the support assembly 1, and the water pipe fixing plate 4 is fixedly installed at the end of the water pipe support 3 for installing the water spray assembly; a plurality of spray nozzles 6 are evenly arranged on the water pipe 5 for spraying cleaning water onto the surface of the heliostat.

[0023] A fixing component is provided at the water pipe fixing plate 4 to encircle and position the water pipe 5. The fixing component includes a U-shaped clamp 7 and a clamping member 8. The clamping member 8 has a U-shaped structure and is fixedly welded to the bottom of the water pipe fixing plate 4 with its opening facing downwards. The U-shaped clamp 7 has its opening facing upwards and supports the bottom of the water pipe 5. Both ends of the U-shaped clamp 7 have external threads. After passing through the mounting holes of the water pipe fixing plate 4, the two ends are locked in place by nuts 26, so that the U-shaped clamp 7 and the clamping member 8 are vertically aligned and together encircle and clamp the water pipe 5, achieving radial positioning of the water pipe 5. This structure adopts a threaded locking U-shaped clamp installation method, which provides a firm connection, is easy to install and disassemble, and facilitates later maintenance and replacement of the water pipe assembly.

[0024] On the end face of the U-shaped clip 7 facing the limiting ring 10, first protruding teeth 9 are evenly distributed circumferentially. The limiting ring 10 is fixedly sleeved on the outer wall of the water pipe 5, and the limiting ring 10 moves axially and rotates circumferentially synchronously with the water pipe 5. Second protruding teeth 11 are evenly distributed circumferentially on the end face of the limiting ring 10 facing the first protruding teeth 9. The tooth shape of the second protruding teeth 11 is adapted to the first protruding teeth 9 and can mesh with each other.

[0025] A first elastic element 12, which is a compression spring, is sleeved on the outer side of the water pipe 5. Two sets of U-shaped clips 7 and limiting rings 10 are respectively arranged at two support positions of the water pipe 5; the compression spring is sleeved on the outer wall of the water pipe 5, with one end abutting against the side of the clamping element 8 and the other end abutting against the end face of the limiting ring 10 away from the second protruding tooth 11.

[0026] Under normal conditions, the elastic force of the first elastic element 12 pushes the limiting ring 10 to move towards the U-shaped clip 7, causing the second protruding tooth 11 to mesh tightly with the first protruding tooth 9. At this time, the circumferential rotation of the water pipe 5 is restricted by the meshing of the tooth surfaces, and the spray angle of the nozzle 6 remains fixed. This invention replaces the traditional friction clamping method with end face tooth meshing locking. When the water pipe 5 is subjected to circumferential torsional force, the torsional force is borne by the meshing tooth surfaces of the first protruding tooth 9 and the second protruding tooth 11, rather than the friction force of the contact surface. Therefore, even under the long-term effects of water pressure pulsation and the vibration of the disc brush 2, circumferential slippage will not occur, significantly improving the locking reliability and effectively avoiding the decrease in cleaning effect caused by the deviation of the spray angle.

[0027] When the angle of the nozzle 6 needs to be adjusted, an axial thrust is applied to the water pipe 5 to overcome the elastic force of the first elastic element 12, causing the water pipe 5 to move the limiting ring 10 away from the U-shaped clamp 7. The second tooth 11 disengages from the first tooth 9, and the circumferential restriction of the water pipe 5 is released, allowing the water pipe 5 to rotate freely to adjust the spray angle of the nozzle 6. After the angle is adjusted to the correct position, the axial thrust is removed, and the first elastic element 12 automatically pushes the limiting ring 10 back to its original position. The second tooth 11 then re-engages with the first tooth 9 and locks in place, completing the angle adjustment. The entire adjustment process does not require disassembling or assembling bolts, making it easy to operate and allowing for quick adaptation to heliostat surfaces with different tilt angles.

[0028] To achieve more efficient and precise control of the axial movement of the water pipe 5, this device is also equipped with a sliding drive assembly. A bearing 13 is fitted onto the water pipe 5, with its inner ring fixedly connected to the outer wall of the water pipe 5. A sliding sleeve 14 is fixedly connected to the outer ring of the bearing 13. A drive post 15 protrudes radially from the outer wall of the sliding sleeve 14. Correspondingly, sliding grooves 16 extending axially along the water pipe 5 are provided on the water pipe fixing plate 4 and the clamping member 8. The sliding grooves 16 are through-type long grooves, and the drive post 15 passes through two sliding grooves 16 simultaneously, allowing it to slide back and forth axially along the sliding grooves 16.

[0029] The core function of bearing 13 is to achieve "circumferential rotation decoupling and axial movement synchronization": when the water pipe 5 rotates circumferentially to adjust its angle, the inner ring of bearing 13 rotates synchronously with the water pipe 5, while the outer ring and sliding sleeve 14 remain stationary, ensuring that the drive column 15 is always engaged within the sliding groove 16. This ensures that the circumferential rotation of the water pipe 5 is unimpeded, and also enables the axial movement of the water pipe 5 as a whole through the axial sliding of the drive column 15, thus achieving unlocking and locking. This transforms the manual pushing and pulling of the water pipe into a form that can be driven by an external mechanism, providing a transmission basis for the subsequent rotation adjustment structure.

[0030] A rotary drive component 17 is mounted on the top of the water pipe fixing plate 4. The rotary drive component 17 is a circular turntable structure. A drive track 18 is formed on the bottom surface of the rotary drive component 17. The drive track 18 is an arc-shaped groove, and the distance from each point on the arc-shaped groove to the rotation center of the rotary drive component 17 gradually changes along the circumference. The upper end of the drive column 15 extends into the arc-shaped groove.

[0031] When the rotary drive component 17 is rotated, the sidewall of the arc-shaped groove presses against the drive column 15. Since the slide groove 16 has a circumferential limiting effect on the drive column 15, the drive column 15 can only move axially in a straight line along the slide groove 16, thus converting the rotational motion of the rotary drive component 17 into the axial reciprocating movement of the water pipe 5. The axial unlocking of the water pipe 5 is achieved through rotational operation, which is more labor-saving than directly pushing and pulling the water pipe 5, and the adjustable stroke is controllable, making it easy to accurately control the disengagement and engagement of the tooth surface and avoid damage to the tooth profile from hard impacts.

[0032] Furthermore, the outer wall of the rotary drive component 17 is provided with anti-slip protrusions 25, which can increase the friction between the hand and the turntable, making it less likely to slip during manual rotation. Especially in situations where gloves are worn or the surface is covered with water or dust, it can still be operated stably, improving the convenience of adjustment.

[0033] To maintain the unlocked state during angle adjustment without continuously pressing the rotary drive 17, this device also includes a ratchet anti-reverse assembly. The lower sidewall of the rotary drive 17 has evenly distributed ratchet teeth 19, and one side of the water pipe fixing plate 4 has an anti-reverse component 20 that unidirectionally engages with the ratchet teeth 19. The end of the anti-reverse component 20 facing the ratchet teeth 19 has a matching unidirectional beveled tooth. When the rotary drive 17 is rotated in the reverse direction (moving the water pipe 5 backward in the unlocking direction), the beveled surface of the ratchet teeth 19 can push the anti-reverse component 20 open for smooth rotation; when rotated in the opposite direction, the straight surfaces of the teeth abut against each other, preventing the rotary drive 17 from rotating back.

[0034] A sliding rod 21 is fixedly connected to the side of the anti-reverse component 20 away from the rotary drive component 17, and an operating component 22 is fixed to the outer end of the sliding rod 21. A guide component 23 is fixed on the water pipe fixing plate 4, and the sliding rod 21 is slidably inserted into the guide component 23. A second elastic component 24 is sleeved on the outer side of the sliding rod 21. The second elastic component 24 is a compression spring, and its two ends abut against the anti-reverse component 20 and the guide component 23 respectively. Under normal conditions, it pushes the anti-reverse component 20 to press against the ratchet 19, maintaining a one-way locking state.

[0035] In use, rotating the rotary drive 17 in the reverse direction moves the water pipe 5 backward, causing the convex tooth to disengage and enter the unlocked state. The ratchet anti-reverse structure automatically locks the position of the rotary drive 17, maintaining the unlocked state. At this time, the operator can release the rotary drive 17 and rotate the water pipe 5 with both hands to adjust the nozzle angle. One person can complete all the adjustment operations, greatly improving the debugging efficiency. After the angle adjustment is completed, pulling the operating part 22 outward causes the anti-reverse part 20 to disengage from the ratchet tooth 19 through the sliding rod 21. The reverse restriction of the rotary drive 17 is released, the first elastic element 12 pushes the water pipe 5 to return to its axial position, the convex tooth re-engages and locks, and at the same time drives the rotary drive 17 to rotate back to its original position.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable water spray device for cleaning the surface of a heliostat, comprising: The bracket assembly (1), the disc brush (2) located below the bracket assembly (1), the water pipe bracket (3) fixedly connected to the bracket assembly (1), the water pipe fixing plate (4) fixedly installed at the end of the water pipe bracket (3), and the water pipe (5) with a nozzle (6) are characterized in that: the water pipe fixing plate (4) is provided with a fixing component for circumferentially positioning the water pipe (5), the fixing component includes a U-shaped clip (7) supporting the bottom of the water pipe (5) and a clamping member (8) fixedly installed at the lower part of the water pipe fixing plate (4) with the opening facing downward; the U-shaped clip (7) has first protruding teeth (9) evenly distributed on one end face; the water pipe (5) is fixedly provided with a limiting ring (10), the limiting ring... The end face of the ring (10) facing the first protruding tooth (9) is evenly distributed with second protruding teeth (11) that can mesh with the first protruding tooth (9); the water pipe (5) is fitted with a first elastic element (12), which is used to push the limiting ring (10) to make the water pipe (5) move axially toward the first protruding tooth (9) so that the second protruding tooth (11) and the first protruding tooth (9) remain engaged to restrict the circumferential rotation of the water pipe (5); the water pipe (5) can overcome the elastic force of the first elastic element (12) under the action of external force and move axially so that the second protruding tooth (11) and the first protruding tooth (9) disengage. At this time, the water pipe (5) can rotate circumferentially to adjust the spray angle of the nozzle (6).

2. The adjustable water spray device for cleaning a heliostat mirror as described in claim 1, characterized in that: The clamping member (8) has a U-shaped structure, with the opening facing downwards and fixed to the bottom of the water pipe fixing plate (4), and is positioned opposite to the U-shaped clip (7) to encircle the water pipe (5).

3. The adjustable water spray device for cleaning a heliostat mirror as described in claim 2, characterized in that: The first elastic element (12) is a compression spring. The U-shaped clip (7) and the limiting ring (10) are provided in two sets. The two ends of the first elastic element (12) abut against the clamping element (8) and the end of the limiting ring (10) away from the second protrusion (11).

4. The adjustable water spray device for cleaning a heliostat mirror as described in claim 1, characterized in that: The water pipe (5) is fitted with a bearing (13), the inner ring of the bearing (13) is fixedly connected to the water pipe (5), and the outer ring of the bearing (13) is fixed with a sliding sleeve (14); the outer wall of the sliding sleeve (14) is radially protruded with a drive column (15); the water pipe fixing plate (4) and the clamping member (8) are provided with a sliding groove (16) extending along the axial direction of the water pipe (5), and the drive column (15) passes through the sliding groove (16) and can slide back and forth along the axial direction of the sliding groove (16) to drive the water pipe (5) to move axially.

5. The adjustable water spray device for cleaning a heliostat mirror as described in claim 4, characterized in that: The water pipe fixing plate (4) is provided with a rotary drive component (17), and the bottom plate of the rotary drive component (17) is provided with a drive rail (18). The drive column (15) extends into the drive rail (18). When the rotary drive component (17) rotates, it drives the drive column (15) to slide along the slide groove (16) through the drive rail (18), thereby driving the water pipe (5) to move axially so that the second convex tooth (11) disengages from the first convex tooth (9).

6. The adjustable water spray device for cleaning a heliostat mirror as described in claim 5, characterized in that: The sidewall of the rotary drive (17) is evenly distributed with ratchet teeth (19), and one side of the water pipe fixing plate (4) is provided with a check piece (20) that engages with the ratchet teeth (19) in one direction; the side of the check piece (20) away from the rotary drive (17) is connected to a sliding rod (21), and the outer end of the sliding rod (21) is provided with an operating piece (22); the water pipe fixing plate (4) is provided with a guide piece (23) for the sliding rod (21) to slide, and a second elastic piece (24) is sleeved on the outer side of the sliding rod (21). The second elastic piece (24) pushes the check piece (20) to engage with the ratchet teeth (19) to restrict the rotary drive (17) from rotating in the opposite direction.

7. The adjustable water spray device for cleaning a heliostat mirror as described in claim 5, characterized in that: The outer wall of the rotary drive component (17) is circumferentially distributed with anti-slip protrusions (25).

8. The adjustable water spray device for cleaning a heliostat mirror as described in claim 1, characterized in that: The U-shaped clip (7) has external threads at both ends. After the two ends of the U-shaped clip (7) pass through the water pipe fixing plate (4), they are locked and fixed by nuts (26).

9. The adjustable water spray device for cleaning a heliostat mirror as described in claim 5, characterized in that: The drive track (18) is an arc-shaped groove on the disk of the rotary drive (17). When the rotary drive (17) rotates, it can push the drive column (15) to slide along the slide groove (16) through the arc-shaped groove.

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