Telescopic shading awning for sand filter

Abstract

The utility model discloses a telescopic shading sky curtain for a sand filter, and particularly relates to the technical field of shading sky curtains, the telescopic shading sky curtain comprises two parallel frames which are arranged in a mirror image mode, the two frames are jointly connected with a roller shutter for shielding the sand filter in a sliding mode, and one ends of the two frames are jointly and fixedly connected with a housing. The other ends of the two frames are fixedly connected with blocking strips, a reel motor is installed in the housing, the two sides of the reel motor are each wound with a steel belt, each steel belt penetrates through blades of all the roller shutters, the blade, closest to the reel motor, of each roller shutter is fixedly connected with the corresponding steel belt, and the remaining blades of each roller shutter are connected with the corresponding steel belt in a sliding mode. According to the telescopic shading awning for the sand filter, due to tight splicing of the awning blades when the awning blades are unfolded, the shading performance of the sand filter is enhanced, and the probability of excessive propagation of algae and microorganisms in the sand filter is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of light-shielding skylights, and in particular relates to a telescopic light-shielding skylight for a sand filter tank. Background Art

[0002] During the tap water production process, one step involves filtering the water through a sand filter to further purify it. Generally, sand filters are open-air structures, so during operation, the following issues often arise: Direct sunlight on the pool surface allows algae and microorganisms to grow inside. Excessive algae and microorganisms can quickly clog the sand filter, causing the blockage to increase rapidly and affecting the filter's ability to intercept and filter pollutants. Excessive algae growth can also affect water quality. Therefore, during water plant operation, the pools are stopped for disinfection and cleaning every six months. Furthermore, during daily production, the filter pools need to be regularly shut down and manually cleaned one by one.

[0003] To prevent excessive algae growth in sand filters, a sunshade is often installed over the openings in the sand filter to provide a cover and shade. However, some existing aluminum alloy blade sunshades have gaps between the blades for easy roll-up and storage, allowing some sunlight to penetrate into the sand filter, potentially causing algae and microbial growth. Therefore, a new retractable sunshade for sand filters is needed. Utility Model Content

[0004] In order to solve the above problems, the utility model discloses a retractable light-shielding canopy for a sand filter tank.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present utility model is as follows:

[0006] A retractable sunshade skylight for a sand filter tank comprises two parallel and mirror-image frames, the two frames being slidably connected to a roller shutter for covering the sand filter tank, one end of the two frames being fixedly connected to a cover shell, and the other ends of the two frames being fixedly connected to a baffle bar, a reel motor being installed in the cover shell, a steel belt being wound on both sides of the reel motor, each of the steel belts passing through all the blades of the roller shutter, the blade of the roller shutter closest to the reel motor being fixedly connected to the steel belt, and the remaining blades of the roller shutter being slidably connected to the steel belt, and the other end of each steel belt being fixedly connected to the reel motor.

[0007] As an optimal technical solution of the present invention, the roller shutter includes: several blades penetrated by two steel belts, each blade cavity is equipped with a hard slider for limited sliding, and each hard slider is fixedly connected to a flexible belt, each of the flexible belts is fixedly connected to the adjacent blades, and the flexible belts connect several blades in series.

[0008] As a preferred technical solution of the present invention, each of the blades is convex on one side and concave on the other side, and the convexities and concaveities between adjacent blades are arranged opposite to each other.

[0009] As an optimal technical solution of the present invention, a steering wheel for steering the steel belt is rotatably installed at both ends of the baffle, and a fixed pulley and an elastic pulley assembly are fixedly installed at both ends of the inner cavity of the cover shell, and the elastic pulley assembly elastically supports the contacted steel belt.

[0010] As a preferred technical solution of the present invention, each of the elastic pulley assemblies includes: a slide fixedly connected to the cover shell, a sliding seat installed on the slide for linear sliding, and a sliding seat rotatably connected to a moving wheel in contact with the steel belt, and a spring fixedly connected to the end of the sliding seat away from the steel belt, and the spring is fixedly connected to the slide.

[0011] As a preferred technical solution of the present invention, several support bars parallel to the frames are arranged between the two frames, and both the frames and the support bars are equipped with sliding tracks for supporting the rolling curtains, and each sliding track contacts the rolling curtain through several rollers.

[0012] The beneficial effects of the utility model are:

[0013] 1. When the curtain is folded, the blades of the curtain spread out under gravity, making it easier for the curtain to roll up on the outer cylinder of the roller motor. When the curtain is unfolded to cover the sand filter, the protrusions and depressions of adjacent blades are plugged together, reducing the gaps between the blades for sunlight to pass through. Thanks to the tight splicing of the curtain blades when unfolded, the light-shielding effect on the sand filter is enhanced, reducing the probability of excessive reproduction of algae and microorganisms in the sand filter.

[0014] Second, the circumference of each turn of the steel belt wound by the reel motor and the belt motor is different. Thanks to the use of an elastic pulley assembly to elastically support the steel belt, the steel belt is always taut, reducing the probability of the steel belt loosening, moving and knotting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the utility model from another angle;

[0017] Figure 3 An exploded view of the embodiment of the present invention with the cylinder removed;

[0018] Figure 4 This is a cross-sectional view of an embodiment of the present invention with the cylinder removed;

[0019] Figure 5 For the embodiment of the utility model Figure 4 Enlarged view of point A in the middle;

[0020] Figure 6 This is a schematic structural diagram of the driving cylinder according to an embodiment of the present utility model.

[0021] List of Figure Symbols:

[0022] 1. Frame; 2. Support bar;

[0023] 3. Roller blind; 301. Blade; 302. Flexible belt; 303. Hard slider;

[0024] 4. Reel motor; 5. Sliding track; 6. Steel belt; 7. Fixed pulley;

[0025] 8. Elastic pulley assembly; 801. Slide; 802. Sliding seat; 803. Moving wheel; 804. Spring;

[0026] 9. Belt winding motor; 10. Cover; 11. Baffle bar; 12. Steering wheel. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0028] See also Figure 1-6A retractable sand filter canopy includes two parallel, mirror-image frames 1. A roller blind 3, which shields the sand filter, is slidably connected to the two frames 1. The edges of the roller blind 3 are inserted into the adjacent frames 1. A cover 10 is fixedly connected to one end of the two frames 1, and a retaining bar 11 is fixedly connected to the other end of the two frames 1. The cover 10 has an opening for accessing the roller blind 3 and a steel belt 6. A reel motor 4 is installed within the cover 10. A steel belt 6 is wound around each side of the reel motor 4. Each steel belt 6 passes through all the blades 301 of the roller blind 3. The blade 301 of the roller blind 3 closest to the reel motor 4 is fixedly connected to the steel belt 6, and the remaining blades 301 of the roller blind 3 are slidably connected to the steel belt 6. The other end of each steel belt 6 is fixedly connected to a belt motor 9. Two belt motors 9 are mounted at either end of the inner cavity of the cover 10. Each steel belt 6 is connected to the reel motor 4 and the belt motor 9 at both ends, respectively. A steering wheel 12 is rotatably mounted at each end of the retaining bar 11 for steering the steel belt 6. After being steered by the steering wheel 12, the steel belt 6 on the sliding track 5 passes through the cavity of the sliding track 5 and is connected to the belt motor 9. A fixed pulley 7 and an elastic pulley assembly 8 are fixedly mounted at each end of the inner cavity of the housing 10, and the elastic pulley assembly 8 elastically supports the steel belt 6 in contact. Because the circumference of each turn of the steel belt 6 is different when the reel motor 4 and the belt motor 9 are wound, the elastic pulley assembly 8 is used to elastically support the steel belt 6, keeping it taut at all times and reducing the risk of the steel belt 6 loosening and tangling.

[0029] The rolling shutter 3 includes: a number of blades 301 penetrated by two steel belts 6. A hard slider 303 is installed in the inner cavity of each blade 301 for limited sliding, and each hard slider 303 is fixedly connected to a flexible belt 302. The hard slider 303 slides freely in the inner cavity of the blade 301, so that when the rolling shutter 3 is lifted, each blade 301 is spread out under the sliding connection between the flexible belt 302 and the hard slider 303. Each flexible belt 302 is fixedly connected to the adjacent blade 301, and the flexible belt 302 connects several blades 301 in series. Each blade 301 is convex on one side and concave on the other side, and the convexities and concaveities between adjacent blades 301 are arranged relative to each other. When the roller motor 4 reels the rolling shutter 3 through the steel belt 6, the blades 301 of the rolling shutter 3 are spread out under gravity, so that the rolling shutter 3 is rolled up on the outer cylinder of the roller motor 4. When the belt motor 9 pulls the roller shutter 3 to unfold, after the blades 301 of the roller shutter 3 contact the blocking bar 11, the steel belt 6 continues to move so that all the blades 301 move and splice together, and the protrusions and depressions of adjacent blades 301 are plugged together, reducing the gaps between the blades 301 for sunlight to pass through.

[0030] Each elastic pulley assembly 8 comprises a carriage 801 fixedly connected to the housing 10. A sliding seat 802 is mounted on the carriage 801 for linear sliding movement. The sliding seat 802 is rotatably connected to a moving wheel 803 that contacts the steel belt 6. A spring 804 is fixedly connected to the end of the sliding seat 802 facing away from the steel belt 6. The spring 804 is also fixedly connected to the carriage 801. Under the elastic force of the spring 804, the moving wheel 803 elastically pushes the steel belt 6 upward, keeping it taut at all times.

[0031] Several support bars 2 are arranged parallel to the two frames 1 between them, and both the frames 1 and the support bars 2 are equipped with sliding tracks 5 that support the rolling curtain 3. Several linearly evenly distributed rollers are installed on the top of the sliding tracks 5. Each sliding track 5 contacts the rolling curtain 3 through several rollers, reducing the resistance of the rolling curtain 3 to movement.

[0032] Working principle:

[0033] When the rolling curtain 3 is retracted, the reel motor 4 reels the rolling curtain 3 upwards through the steel belt 6, and the belt motor 9 follows, and the blades 301 of the rolling curtain 3 spread out under gravity, so that the rolling curtain 3 can be rolled up on the outer cylinder of the reel motor 4, and the rolling curtain 3 can be retracted; when the rolling curtain 3 is unfolded to cover the sand filter tank, the belt motor 9 winds up the steel belt 6, and the reel motor 4 follows, and the rolling curtain 3 moves with the steel belt 6. When the blades 301 of the rolling curtain 3 contact the blocking bar 11, the steel belt 6 continues to move so that all the blades 301 move and splice together, and the protrusions and depressions of adjacent blades 301 are plugged together, reducing the gaps between the blades 301 that allow sunlight to pass through;

[0034] When the reel motor 4 and the belt motor 9 wind the steel belt 6, the circumference of each turn is different. Under the elastic force of the spring 804, the moving wheel 803 always elastically pushes the steel belt 6 upward, so that the steel belt 6 is always taut, reducing the probability of the steel belt 6 getting knotted when it moves loosely.

[0035] It should be noted that the above content only illustrates the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, they can make several improvements and modifications without departing from the principles of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. A retractable shading canopy for a sand filter tank, comprising two parallel and mirror-image frames (1), characterized in that: The two frames (1) are slidably connected to a rolling curtain (3) for shielding the sand filter tank. One end of the two frames (1) is fixedly connected to a cover shell (10), and the other end of the two frames (1) is fixedly connected to a blocking bar (11). A reel motor (4) is installed in the cover shell (10). A steel belt (6) is wound around both sides of the reel motor (4). Each of the steel belts (6) passes through all the blades (301) of the rolling curtain (3). The blade (301) of the rolling curtain (3) closest to the reel motor (4) is fixedly connected to the steel belt (6), and the remaining blades (301) of the rolling curtain (3) are slidably connected to the steel belt (6). The other end of each steel belt (6) is fixedly connected to a reel motor (9).

2. The retractable shading canopy for a sand filter according to claim 1, characterized in that: The rolling shutter (3) comprises: a plurality of blades (301) penetrated by two steel belts (6); a hard slider (303) is installed in the inner cavity of each blade (301) for limited sliding, and each hard slider (303) is fixedly connected to a flexible belt (302); each flexible belt (302) is fixedly connected to an adjacent blade (301), and the flexible belt (302) connects the plurality of blades (301) in series.

3. The retractable shading canopy for a sand filter according to claim 2, characterized in that: Each blade (301) has a convex side and a concave side, and the convexities and concave sides of adjacent blades (301) are arranged opposite to each other.

4. The retractable shading canopy for a sand filter according to claim 1, characterized in that: A steering wheel (12) for steering the steel belt (6) is rotatably mounted at both ends of the baffle (11), and a fixed pulley (7) and an elastic pulley assembly (8) are fixedly mounted at both ends of the inner cavity of the cover shell (10), and the elastic pulley assembly (8) elastically supports the steel belt (6) in contact.

5. The retractable shading canopy for a sand filter according to claim 4, characterized in that: Each elastic pulley assembly (8) comprises: a slide (801) fixedly connected to the cover (10); a sliding seat (802) is linearly slidably mounted on the slide (801); and the sliding seat (802) is rotatably connected to a moving wheel (803) in contact with the steel belt (6); and a spring (804) is fixedly connected to one end of the sliding seat (802) away from the steel belt (6), and the spring (804) is fixedly connected to the slide (801).

6. The retractable shading canopy for a sand filter according to claim 1, characterized in that: A plurality of support bars (2) parallel to the frames (1) are provided between the two frames (1), and the frames (1) and the support bars (2) are both equipped with sliding rails (5) for supporting the rolling curtain (3), and each sliding rail (5) contacts the rolling curtain (3) via a plurality of rollers.

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