A water inlet control valve

Abstract

The utility model discloses a water inlet control valve, including water tank and water inlet control valve subassembly, water inlet control valve subassembly includes water inlet pipe and installs the main valve body at water inlet pipe one end, the other end of water inlet pipe extends to the water tank of the water supply of secondary water supply system, the outer wall of water tank is fixedly connected with first guide sleeve, the inside of first guide sleeve is equipped with gravity block, first guide sleeve inwall one side fixedly connected with photoelectric sensor, water tank inwall one side fixedly connected with second guide sleeve, the utility model two photoelectric sensor combination avoid the non -contact detection of groove, the wear and tear problem of traditional mechanical contact is completely avoided, and the accurate capture of the upper and lower limit position of gravity block, the clearance cooperation of floating block and second guide sleeve, the linear motion of gravity block in first guide sleeve with the help of gyro wheel, constructs multiple wear protection system, makes this water inlet system also can keep long -term operation in complex environment, and the spare part is simple, reduces maintenance cost compared with traditional.

Description

Technical Field

[0001] This utility model mainly relates to the field of secondary water supply technology, specifically an inlet control valve. Background Technology

[0002] The secondary water supply system pressurizes water from the municipal water network and pumps it to high-rise terminals. The existing secondary water supply system includes a water tank, an inlet control valve, and a water pump. After the inlet control valve is opened, water from the municipal water network is discharged into the water tank, and the water pump delivers the water from the water tank to the terminal.

[0003] The existing inlet control valve controls the water level in the water tank through a float valve. Because the water level in the secondary water supply system is constantly changing, the float valve is frequently started and stopped. The float valve is prone to wear and leakage, causing the inlet control valve to remain open, which in turn leads to water overflow from the water tank. Utility Model Content

[0004] To address the shortcomings of existing inlet control valves that control water level via float valves, which are prone to wear and failure, this invention proposes an inlet control valve that uses a sensor to control water level, thereby reducing wear and failure rate.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A water inlet control valve includes a water tank and a water inlet control valve assembly. The water inlet control valve assembly includes an inlet pipe and a main valve body installed at one end of the inlet pipe. The other end of the inlet pipe extends into the water tank for replenishing water to a secondary water supply system. A first guide sleeve is fixedly connected to the outer wall of the water tank. A gravity block is provided inside the first guide sleeve. A photoelectric sensor is fixedly connected to one side of the inner wall of the first guide sleeve. A second guide sleeve is fixedly connected to one side of the inner wall of the water tank. A floating block is provided inside the second guide sleeve. The gravity block and the floating block are fixedly connected by a pull rope. A guide member is provided at the top of the water tank. The guide member is located between the first guide sleeve and the second guide sleeve.

[0007] The guide component includes a U-shaped component, a connecting plate, and guide wheels. The connecting plate is welded to the top of the U-shaped component, and the guide wheels are rotatably connected to both ends of the top of the connecting plate.

[0008] Furthermore, the opening of the U-shaped component is fastened to one side of the top of the water tank and fixed with bolts, and the connecting plate is V-shaped, with guide wheels rotatably connected to the top two ends of the V-shaped connecting plate.

[0009] Furthermore, the pull rope engages within an annular groove on the surface of the guide wheel and passes over the upper side of the two guide wheels. The depth of the annular groove on the surface of the guide wheel is adapted to the diameter of the pull rope to restrict the radial movement of the pull rope within the groove. The two ends of the pull rope are respectively fixed to the top of the gravity block and the floating block, and the floating block floats on the water surface. At the same time, there is a gap between the floating block and the inner wall of the water tank.

[0010] Furthermore, the gravity block is a cube with rollers rotatably connected to its two sides via pins. The rollers are attached to the inner wall of the first guide sleeve. The gravity block is pulled by a rope, which drives the rollers to roll along the inner wall of the first guide sleeve, thereby realizing the linear movement of the gravity block within the first guide sleeve. The first guide sleeve is a square tubular structure that cooperates with the gravity block.

[0011] Furthermore, the inner wall of the first guide sleeve is provided with a vertically extending clearance groove, the detection end of the photoelectric sensor is embedded in the clearance groove, and its end face is flush with the bottom of the clearance groove. Two sets of photoelectric sensors are arranged vertically at intervals.

[0012] Furthermore, the second guide sleeve is a vertically arranged cylindrical tubular structure, vertically fixed to the inner wall of the water tank. The outer diameter of the floating block is d1, and the inner diameter of the second guide sleeve is d2. The two satisfy 2mm < d2 - d1 < 6mm, forming a clearance fit. The clearance fit allows the floating block to float up and down along the inner wall of the second guide sleeve.

[0013] Furthermore, the floating block has a hollow cylindrical structure, and the weight of the floating block is greater than the weight of the gravity block, so that when the water level in the water tank changes, the floating block can pull the gravity block to slide along the first guide sleeve by pulling the rope.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. Two sets of photoelectric sensors, in conjunction with the clearance groove of the first guide sleeve, avoid mechanical friction between the sensors and the gravity block. At the same time, by using the upper and lower limit positions of the gravity block for detection, precise closed-loop control of the main valve opening and closing is achieved. Compared with traditional mechanical contact control, this effectively eliminates control errors caused by wear and improves the water level regulation accuracy and system response speed.

[0016] 2. The long-term stable operation of the water intake system can be ensured by the coordinated optimization of multiple components. First, the gap fit between the floating block and the second guide sleeve can ensure the stability of the buoyancy of the buoyancy block. Second, the roller guide structure of the gravity block can reduce the resistance of its up and down movement. The matching of the pull rope and the guide wheel can disperse the tension and prevent it from falling out of the groove. With the application of low temperature resistant materials, the wear and tear of components is reduced in all aspects, and the service life of the equipment is extended. Compared with the traditional structure, it is more adaptable to complex water quality and extreme environment, and reduces maintenance costs and failure rate.

[0017] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a partial structural schematic diagram of the main view of this utility model;

[0019] Figure 2 This is a partial cross-sectional structural diagram of the present invention;

[0020] Figure 3 This utility model Figure 2 Sectional view of AA;

[0021] Numbering on the map:

[0022] 1. Water tank; 2. Inlet control valve assembly; 3. Guide component; 301. U-shaped component; 302. Connecting plate; 303. Guide wheel; 4. Inlet pipe; 5. Main valve body; 6. First guide sleeve; 7. Gravity block; 8. Photoelectric sensor; 9. Floating block; 10. Pull rope; 11. Second guide sleeve. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Please refer to the appendix carefully. Figure 1-3 A water inlet control valve includes a water tank 1 and a water inlet control valve assembly 2. The water inlet control valve assembly 2 includes a water inlet pipe 4 and a main valve body 5 installed at one end of the water inlet pipe 4. The other end of the water inlet pipe 4 extends into the water tank 1, which supplies water to the secondary water supply system. A first guide sleeve 6 is fixedly connected to the outer wall of the water tank 1. A gravity block 7 is provided inside the first guide sleeve 6. A photoelectric sensor 8 is fixedly connected to one side of the inner wall of the first guide sleeve 6. A second guide sleeve 11 is fixedly connected to one side of the inner wall of the water tank 1. A floating block 9 is provided inside the second guide sleeve 11. The gravity block 7 and the floating block 9 are fixedly connected by a pull rope 10. A guide member 3 is provided on the top of the water tank 1. The guide member 3 is located between the first guide sleeve 6 and the second guide sleeve 11.

[0026] The guide component 3 includes a U-shaped component 301, a connecting plate 302, and a guide wheel 303. The connecting plate 302 is welded to the top of the U-shaped component 301, and the guide wheel 303 is rotatably connected to both ends of the top of the connecting plate 302.

[0027] In this embodiment, as shown in the figure, the opening of the U-shaped part 301 is fastened to one side of the top of the water tank 1 and fixed by bolts, and the connecting plate 302 is V-shaped, and the guide wheel 303 is rotatably connected to the top two ends of the V-shaped connecting plate 302.

[0028] Through the above structure, the two guide wheels 303 form a "double fulcrum" transmission structure, which can distribute the tension of the pull rope 10 and reduce wear caused by single-point force.

[0029] In this embodiment, as shown in the figure, the pull rope 10 is engaged in the annular groove opened on the surface of the guide wheel 303 and passes through the upper side of the two guide wheels 303. The depth of the annular groove on the surface of the guide wheel 303 is adapted to the diameter of the pull rope 10 to restrict the radial movement of the pull rope 10 in the groove. The two ends of the pull rope 10 are respectively fixed to the top of the gravity block 7 and the floating block 9, and the floating block 9 floats on the water surface. At the same time, there is a gap between the floating block 9 and the inner wall of the second guide sleeve 11.

[0030] Through the above structure, the pull rope 10 is made of low-temperature resistant polyurethane fiber rope, and its surface is coated with antifreeze silicone coating to avoid hardening and breakage in low-temperature environment. The annular groove of the guide wheel 303 is adapted to the diameter of the pull rope 10, which can limit the radial movement of the pull rope 10, ensure that the pull rope 10 always drives along the preset path, avoid transmission failure caused by deviation or derailment, and improve stability.

[0031] In this embodiment, as shown in the figure, the gravity block 7 is a cube with rollers rotatably connected to its two sides by pins. The rollers are attached to the inner wall of the first guide sleeve 6. The gravity block 7 is pulled by the pull rope 10, which drives the rollers to roll along the inner wall of the first guide sleeve 6, so as to realize the linear movement of the gravity block 7 within the first guide sleeve 6. The first guide sleeve 6 is a square tubular structure that cooperates with the gravity block 7.

[0032] Through the above structure, the rollers on both sides of the gravity block 7 can significantly reduce the motion resistance, making the traction of the pull rope 10 smoother and effectively reducing the wear of the pull rope 10. The square gravity block 7 cooperates with the square tubular first guide sleeve 6, and the rollers roll against the inner wall to ensure that the gravity block 7 can always move in a straight line within the first guide sleeve 6, avoiding deviation and shaking. This lays the foundation for accurate detection by the photoelectric sensor 8. The metal material of the gravity block 7 has high strength and heavy weight. It can tighten the pull rope 10 with its own weight to ensure transmission reliability and can withstand long-term reciprocating motion, adapting to the needs of frequent operation of the water inlet control valve system.

[0033] In this embodiment, as shown in the figure, the inner wall of the first guide sleeve 6 is provided with a vertically extending clearance groove. The detection end of the photoelectric sensor 8 is embedded in the clearance groove, and its end face is flush with the bottom of the clearance groove. Two sets of photoelectric sensors 8 are arranged vertically at intervals.

[0034] With the above structure, the clearance groove is 5mm deep and 8mm wide. The photoelectric sensor 8 adopts the E3F-DS10C4 model through-beam photoelectric switch, and its detection end is embedded in the clearance groove with the end face flush with the bottom of the groove. This ensures that when the gravity block 7 slides, it only contacts the inner wall of the first guide groove 6, completely avoiding mechanical friction between the photoelectric sensor 8 and the gravity block 7. The two sets of photoelectric sensors 8 are arranged vertically at intervals, which can accurately limit the upper and lower limit positions of the gravity block 7, so that the controller can open and close the main valve body 5 through dual limit detection.

[0035] In this embodiment, as shown in the figure, the second guide sleeve 11 is a vertically arranged cylindrical tubular structure, which is vertically fixed to the inner wall of the water tank 1. The outer diameter of the float block 9 is d1, and the inner diameter of the second guide sleeve 11 is d2. The two satisfy 2mm < d2 - d1 < 6mm, forming a clearance fit. The clearance fit allows the float block 9 to float up and down along the inner wall of the second guide sleeve 11.

[0036] With the above structure, the gap range of 2mm < d2 - d1 < 6mm can both limit the lateral sway of the float block 9 through the cylindrical structure to ensure the accuracy of the trajectory when floating up and down, and avoid the increase of water resistance caused by excessive tightness, thus ensuring the smooth movement of the float block 9.

[0037] In this embodiment, as shown in the figure, the floating block 9 is a hollow cylindrical structure, and the weight of the floating block 9 is greater than the weight of the gravity block 7, so that when the water level in the water tank 1 changes, the floating block 9 can drive the gravity block 7 to slide along the first guide sleeve 6 through the pull rope 10.

[0038] With the above structure, the hollow cylindrical floating block 9 can accurately float and sink with the water level by relying on buoyancy. Its weight is greater than that of the gravity block 7, which can ensure that the pull rope 10 is always taut. With its own buoyancy, it drives the gravity block 7 to slide stably along the first guide sleeve 6. This weight-driven mechanism of the floating block 9 and the gravity block 7 enables the floating block 9 and the gravity block 7 to form a mechanical linkage through the pull rope 10, providing a power basis for the photoelectric sensor 8 to detect the position of the gravity block 7 non-contactly, and ensuring the response accuracy of water level control.

[0039] The specific operating procedure of this utility model is as follows: In the initial state of the water inlet system, to facilitate a clear visual demonstration of the internal structure of the water tank 1, the cover structure is not shown in the accompanying drawings. It should be noted that in actual product applications, the top of the water tank 1 will be equipped with a removable cover to meet the requirements of dustproof, waterproof, and safe use. The water tank 1 has sufficient water, and the float 9 is close to the upper part of the water tank 1 due to buoyancy. The gravity block 7 is pulled by the rope 10 and is located at the photoelectric sensor 8 below the first guide sleeve 6. At this time, the beam of the lower photoelectric sensor 8 is blocked by the gravity block 7, and the output electrical signal is transmitted to the controller set outside the water tank 1. The controller will... The main valve body 5 is closed, while the upper photoelectric sensor 8 has no signal output because the beam is not blocked by the gravity block 7. At the same time, since the gravity block 7 is made of metal, it is located at the photoelectric sensor 8 below the first guide sleeve 6 under the pull rope 10. The pull rope 10 can be kept taut due to the weight of the gravity block 7. Combined with the controller set on the outside of the water tank 1, it is electrically connected to both the main valve body 5 and the photoelectric sensor 8. The controller uses an STM32F103RCT6 microcontroller with a built-in signal filtering algorithm. After receiving the signal from the photoelectric sensor 8, it delays for 1.5 seconds to execute the opening / closing of the main valve body 5.

[0040] When the water level in tank 1 decreases, the water level in tank 1 will drop accordingly. Since the floating block 9 is made of hollow material, it will move downward with the water level. At the same time, since its weight is greater than that of the gravity block 7, the descent of the floating block 9 will pull the gravity block 7 upward through the pull rope 10. The gravity block 7 will move upward away from the photoelectric sensor 8 on the lower side. As the water level in tank 1 continues to decrease, the gravity block 7 will slide upward within the first guide sleeve 6. When the gravity block 7 slides upward and approaches the photoelectric sensor 8 on the upper side, the photoelectric sensor 8 will detect the gravity block 7. Its light beam will be blocked by the gravity block 7. The receiving element will detect the change in light intensity, thereby generating an electrical signal output to the controller on the outside of tank 1. The controller will control the main valve body 5 to open, and water from the municipal water network will be discharged into tank 1 through the inlet pipe 4, thereby increasing the water level in tank 1.

[0041] When the water level in water tank 1 rises due to the inlet water level, the float 9 will float upwards again with the change in water level. At this time, the gravity block 7 at the other end will move downwards again along the first guide sleeve 6. When the gravity block 7 moves downwards and returns to the position of the photoelectric sensor 8 on the lower side, it detects the gravity block 7 and generates an electrical signal output to the controller. The controller will control the main valve body 5 to close, which can stop the water inlet pipe 4 from entering the water. At this time, the water level in water tank 1 is restored and the water volume is sufficient.

[0042] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A water inlet control valve, comprising a water tank (1) and a water inlet control valve assembly (2), characterized in that: The water inlet control valve assembly (2) includes a water inlet pipe (4) and a main valve body (5) installed at one end of the water inlet pipe (4). The other end of the water inlet pipe (4) extends into the water tank (1) that supplies water to the secondary water supply system. A first guide sleeve (6) is fixedly connected to the outer wall of the water tank (1). A gravity block (7) is provided inside the first guide sleeve (6). A photoelectric sensor (8) is fixedly connected to one side of the inner wall of the first guide sleeve (6). A second guide sleeve (11) is fixedly connected to one side of the inner wall of the water tank (1). A floating block (9) is provided inside the second guide sleeve (11). The gravity block (7) and the floating block (9) are fixedly connected by a pull rope (10). A guide member (3) is provided at the top of the water tank (1). The guide member (3) is located between the first guide sleeve (6) and the second guide sleeve (11). The guide component (3) includes a U-shaped component (301), a connecting plate (302) and a guide wheel (303). The connecting plate (302) is welded to the top of the U-shaped component (301), and the guide wheel (303) is rotatably connected to both ends of the top of the connecting plate (302).

2. The inlet control valve according to claim 1, characterized in that: The opening of the U-shaped part (301) is fastened to one side of the top of the water tank (1) and fixed by bolts. The connecting plate (302) is V-shaped, and the guide wheel (303) is rotatably connected to the top two ends of the V-shaped connecting plate (302).

3. The inlet control valve according to claim 1, characterized in that: The pull rope (10) is engaged in the annular groove on the surface of the guide wheel (303) and passes over the upper side of the two guide wheels (303). The depth of the annular groove on the surface of the guide wheel (303) is adapted to the diameter of the pull rope (10) to limit the radial movement of the pull rope (10) in the groove. The two ends of the pull rope (10) are respectively fixed to the top of the gravity block (7) and the floating block (9). The floating block (9) floats on the water surface, and there is a gap between the floating block (9) and the inner wall of the water tank (1).

4. The inlet control valve according to claim 1, characterized in that: The gravity block (7) is a cube with rollers rotatably connected to its two sides by pins. The rollers are attached to the inner wall of the first guide sleeve (6). The gravity block (7) is pulled by the rope (10) to drive the rollers to roll along the inner wall of the first guide sleeve (6) so as to realize the linear movement of the gravity block (7) in the first guide sleeve (6). The first guide sleeve (6) is a square tube structure that cooperates with the gravity block (7).

5. The inlet control valve according to claim 1, characterized in that: The inner wall of the first guide sleeve (6) is provided with a vertically extending clearance groove. The detection end of the photoelectric sensor (8) is embedded in the clearance groove, and its end face is flush with the bottom of the clearance groove. Two sets of photoelectric sensors (8) are arranged vertically at intervals.

6. The inlet control valve according to claim 1, characterized in that: The second guide sleeve (11) is a vertically arranged cylindrical tubular structure, which is vertically fixed to the inner wall of the water tank (1). The outer diameter of the floating block (9) is d1, and the inner diameter of the second guide sleeve (11) is d2. The two satisfy 2mm < d2 - d1 < 6mm, forming a clearance fit. The clearance fit allows the floating block (9) to float up and down along the inner wall of the second guide sleeve (11).

7. The inlet control valve according to claim 1, characterized in that: The floating block (9) is a hollow cylindrical structure, and the weight of the floating block (9) is greater than the weight of the gravity block (7), so that when the water level in the water tank (1) changes, the floating block (9) can drive the gravity block (7) to slide along the first guide sleeve (6) by pulling the rope (10).

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