Intelligent non-negative pressure secondary water supply system

Abstract

The invention relates to the technical field of water supply systems, in particular to an intelligent non-negative pressure secondary water supply system which comprises a water pump pipe set, an intelligent control cabinet, a steady flow compensation tank, a flange pipe, a vacuum suppressor, an air pressure tank, a diaphragm gasket and a rotary driving mechanism. And when the vacuum suppressor is required to continuously balance the pressure due to flow change in the steady flow compensation tank, the normal operation of the water supply system is ensured. The ball body and the piston rod are controlled to move through the water flow height and the air flow, the piston rod moves upwards to drive the rotation driving mechanism to move, the rotation driving mechanism can correspondingly drive the ventilation pipe according to the height of the ball body, direct contact between the ventilation pipe and the ball body can be avoided, and therefore short-distance delayed collision is formed; abrasion between the breather pipe and the ball body is effectively reduced, overall sealing of equipment is guaranteed, and the service time is prolonged.

Description

Technical Field

[0001] This invention relates to the field of water supply system technology, specifically to an intelligent negative pressure-free secondary water supply system. Background Technology

[0002] Negative pressure-free water supply equipment uses the municipal water network as its source, making full use of the existing pressure of the municipal network to form a closed, continuous relay booster water supply method. It is used in domestic water use. During peak water usage periods, the energy storage device releases pre-charged nitrogen at a certain pressure to ensure that the water in the high-pressure chamber of the pressure stabilizing compensation tank has a certain pressure to compensate the constant pressure chamber. For a certain period of time, it can supplement the insufficient water supply from the municipal water network. Through a bidirectional compensator, the pressure stabilizing compensation tank stores energy during off-peak water usage periods, playing a role in stabilizing and compensating the user's pipeline. Because the water source provided has no secondary pollution, it is widely used in residential use.

[0003] In labor-intensive industrial factories, water usage is highly concentrated, with large water consumption in short periods. Furthermore, the varying skill levels of employees lead to significant waste. Relying on municipal water supply often results in insufficient water supply and unstable flow rates, placing excessive pressure on the water supply system. Flow control valves and pressure reducers cannot fully dampen this pressure, necessitating frequent movement of vacuum suppressors to balance the pressure. This places excessively high demands on the stability of the vacuum suppressors, which are often neglected and replaced every few years under normal use. The pressure fluctuations caused by flow rate changes easily lead to wear on the internal seals of the vacuum suppressor, causing it to deteriorate within 5 years. Damage will occur within 8 months, causing leakage and unstable vacuum control, resulting in water outages in the water supply system area. Some factories also use gas cylinders to achieve pressure compensation, but once a water outage occurs, the inside of the cylinder remains in a vacuum, requiring manual connection of the water outlet to replenish the pressure. Moreover, multiple cylinders connected in series make the cost high, and the system itself has poor safety and stability and is easily damaged. At the same time, it is difficult to manage personnel in the factory area. Once a single part is damaged, the entire device loses its function. Since negative pressure water supply equipment generally does not have a water storage structure to avoid pollution, the water supply system area will experience long periods of water outages during repairs, affecting the lives of factory workers.

[0004] To address this, an intelligent pressure-free water supply system is proposed, which can effectively reduce wear and tear when the water supply flow rate frequently changes or even when there is a water outage. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent negative pressure-free secondary water supply system to solve the problem that the vacuum suppressor is constantly opening and closing due to frequent fluctuations in municipal water supply during peak water use, resulting in wear and tear from repeated collisions.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An intelligent negative pressure-free secondary water supply system includes a water pump assembly, an intelligent control cabinet, a flow stabilizing compensation tank, a flange pipe, a vacuum suppressor, and a pressure tank. The flow stabilizing compensation tank is fixedly installed on top of the water pump assembly. The intelligent control cabinet is electrically connected to the water pump assembly and the flow stabilizing compensation tank. The pressure tank is fixedly installed on top of the water pump assembly. The flange pipe is welded to the top of the flow stabilizing compensation tank. The vacuum suppressor is installed on top of the flange pipe. The system is characterized by further including a diaphragm gasket and a rotary drive mechanism. The vacuum suppressor includes a housing, a piston rod, a ball, and a vent pipe. The piston rod is movably installed inside the housing. The vent pipe is movably installed inside the housing and cooperates with the ball. A soft rubber ring is provided at the bottom of the vent pipe. The ball... Fixedly installed at the bottom of the piston rod, the flange tube has a diaphragm gasket that cooperates with the ball and the vent pipe. The diaphragm gasket is located between the vent pipe and the ball. The additional diaphragm gasket is used to compensate for wear caused by the movement of the vent pipe. By transferring the worn parts, the service life is effectively extended. The housing is equipped with a rotary drive mechanism that cooperates with the vent pipe. After the ball moves upward to the designated position with buoyancy and airflow, the piston rod drives the vent pipe to move upward through the rotary drive mechanism. After the ball continues to move upward to the set position, the rotary drive mechanism drives the vent pipe to move downward. When the ball moves to the top position, the rotary drive mechanism drives the vent pipe to seal above the diaphragm gasket and the ball.

[0008] In the above solution, precise control is achieved by utilizing the variable amount of water, which can automatically change the sealed and unsealed state at all times. At the same time, the rotary drive mechanism reduces and evenly reduces wear on the ball and the vent pipe. In a conventional solution, the sealing contact surface between the ball and the vent pipe is usually about one-third of the ball's diameter to prevent excessive impact from a large area. Because the rotary drive mechanism reduces wear from collisions between the ball and the vent pipe, the diameter of the vent pipe can be increased to better absorb the buoyancy of the water and the airflow force. While avoiding collisions, the contact surface between the ball and the vent pipe can be further reduced to one-quarter to one-fifth of the vent pipe's diameter, reducing wear, extending service life, and effectively enhancing the sealing effect.

[0009] Optionally, the rotary drive mechanism can be directly replaced with a cylinder and a motor, and then controlled by an intelligent controller. The vacuum suppressor itself will naturally wear out and need to be replaced after a long period of use. The simple rotary drive mechanism has a lower replacement cost because it does not involve a complex intelligent motor control system and sensors. It is also easier to manufacture and use because it does not require parameter calculation, testing and adjustment. In addition, it is frequently inspected and maintained. The rotary drive mechanism is superior in terms of performance and practicality. Considering factors such as usage requirements, complexity, cost and performance, intelligent control is not chosen.

[0010] Preferably, the rotary drive mechanism includes a support rod, a first circular component, a slide groove, a spring, a transmission assembly, and a limiting sleeve. The support rod is fixedly disposed in the middle of the piston rod. The interior of the first circular component is rotatably connected to the piston rod, and the exterior of the first circular component is rotatably connected to the vent pipe. The length of the support rod is greater than the radius of the first circular component to provide more stable support and pushing. The support rod is circular to reduce contact points, thereby reducing wear and extending service life. The limiting sleeve is fixedly installed inside the housing. The spring is fixedly connected between the limiting sleeve and the first circular component. The slide groove is formed at the bottom of the first circular component, and the vertical distance from the lowest point to the highest point of the slide groove is [not specified]. The distance is equal to the distance from the ball to the top of the ball, ensuring the vent pipe is reset. Two grooves and two support rods are provided, symmetrical about the central axis of the piston rod, so that both ends of the first circular piece are limited by the support rods and cannot deviate. This provides a buffering effect on both sides to reduce the impact force. The bottom of the transmission assembly is connected to the top of the first circular piece, and the transmission assembly is connected to the piston rod. When the ball moves to the designated position, the support rod contacts the bottom of the first circular piece. The contact surface between the first circular piece and the support rod is smoothed to prevent the support rod from creating significant resistance and jamming. The support rod intersects with the groove to enhance stability and support. When the ball moves to the set position, the support rod enters the groove.

[0011] Preferably, the transmission assembly includes a second circular component, a telescopic rod, a path groove, a limiting support sleeve, and a frustum. The interior of the second circular component is rotatably connected to the piston rod. The telescopic rod is fixedly connected between the second circular component and the first circular component. The surface of the second circular component has a path groove. When the second circular component moves upward, the frustum will enter the path groove. The top of the path groove is a steep slope end, and the remaining part of the path groove is a gentle slope end. The length of the gentle slope end is three times that of the steep slope end. The limiting support sleeve is fixedly installed inside the housing. The frustum is rotatably arranged inside the limiting support sleeve. When the frustum reaches the gentle slope end, the sphere reaches the set position.

[0012] In the above scheme, when the truncated cone enters the path groove, the second circular component rotates using the limiting position of the truncated cone. The truncated cone can rotate, preventing friction at a single point inside the path groove. At this time, the truncated cone uses the steep slope end to reduce resistance and provide power in the initial stage to prevent excessive resistance. As the support rod rises, the truncated cone will reach the gentle slope end, thereby reducing the impact force. At the same time, the extended distance ensures that the first circular component finally rotates to ninety degrees. Within the distance from the ball to the top of the designated position, the first circular component and the vent pipe can be smoothly reset, effectively reducing the impact effect. This achieves a seal while effectively mitigating the multiple strong impacts caused by repeated flow changes.

[0013] Preferably, the slide includes a ramp end face, a vertical end face, and a vertical retraction position. The side of the slide away from the piston rod is the ramp end face, and the side of the slide closer to the piston rod is the vertical end face. The contact end between the ramp end face and the vertical end face is the vertical retraction position. When the ball moves to the fingertip position, the support rod will enter the vertical retraction position. The support rod is in contact with the vertical retraction position. The height of the vertical retraction position is lower than the radius of the support rod, which can effectively reduce the collision height difference. At the same time, since the first circular piece will also reset and rotate when the support rod retracts, in order to avoid the support rod and the first circular piece getting stuck when retracting, the height of the vertical retraction position is shortened. That is, when the first circular piece rotates, the support rod has already left the interior of the vertical retraction position.

[0014] In the above scheme, the vent pipe is gradually lowered by using the ramp end face, and the strut will gradually reach the vertical retraction position. During the movement of the strut, the strut will not contact the vertical end face, which can effectively avoid the resistance generated by friction. At the same time, the vertical end face only contacts the strut when the piston rod reaches the top, providing friction in the final stage to avoid excessive friction and resistance, and can ensure sufficient stability when needed.

[0015] Preferably, the diaphragm gasket includes a thickened end, a downward sloping end, and a fitting end. The diaphragm gasket gradually thickens from the outer edge to the center while being slightly inclined, so that overflowing water can slide towards the center and return to the interior of the flow stabilization compensation tank. The thickened end is located near the center of the diaphragm gasket, the downward sloping end is above the thickened end, and the fitting end is below the thickened end. There is a vertical surface between the downward sloping end and the fitting end.

[0016] In the above solution, the contact point between the piston rod and the vent pipe is reinforced by using a thickened end. At the same time, since the diaphragm gasket is used as the medium between the piston rod and the vent pipe, the collision between the two can be directly avoided, resulting in a better sealing effect. In addition, the small impact force generated by the vent pipe at the end will not affect the diaphragm gasket, and the impact generated by the piston rod is not supported by the vent pipe at the top of the diaphragm gasket, making the diaphragm gasket itself difficult to damage, better maintaining the original sealing performance, and effectively improving the service life.

[0017] Preferably, the interior of both the limiting spacer and the limiting support sleeve is slidably connected to the piston rod, the interior of the second circular piece is provided with a through hole, and a circular strip is fixedly provided on the top of the limiting spacer. When the truncated cone leaves the path groove, the circular strip enters the interior of the through hole.

[0018] Preferably, a sealing gasket is fixedly provided on the top of the piston rod, the outer side of the sealing gasket is in contact with the inner wall of the housing, the length of the sealing gasket is the length of the ball from the designated position to the top position, the sealing gasket does not contact the limiting support sleeve and the limiting spacer sleeve, and the top of the housing is provided with multiple vent holes.

[0019] In the above scheme, when the sealing gasket moves a short distance back and forth with the piston rod, a large amount of air does not need to enter. Therefore, by using the sealing gasket to block most of the vent holes, air can be allowed to flow out slowly, and the clean airflow can be reused repeatedly. This can provide clean air at all times when the flow rate changes repeatedly.

[0020] Preferably, a limiting ring is fixedly provided inside the housing, the limiting ring is located above the vent pipe, the top of the vent pipe has multiple conical holes, the top of the limiting ring is provided with an inverted conical shell, the inverted conical shell gradually tapers upward and has a round opening at the top, the inverted conical shell wraps around the conical holes, and the inverted conical shell is located below the limiting spacer.

[0021] In the above scheme, the limiting ring limits the height of the vent pipe, which can prevent the strut from excessively compressing the spring. At the same time, the inverted conical shell is used to reduce the outflow of airflow, and in conjunction with the vent pipe, clean airflow is retained between the inverted conical shell and the vent pipe for repeated use, preventing contamination.

[0022] Preferably, the chute has a straight groove at the end face of the slope, and the number of straight grooves gradually increases as they approach the vertical retraction position to gradually provide stronger friction, so that the impact is small enough during the final reset.

[0023] Preferably, a baffle plate is provided at the bottom of the first circular piece, the baffle plate being higher than the radius of the support rod, and the number of baffle plates corresponding to the number of support rods, to prevent the contact point between the support rod and the first circular piece from shifting. An anti-friction half-plate is provided on the contact surface between the support rod and the first circular piece, which is used to treat the easily rubbed areas, thus saving materials. At the same time, when the support rod enters the slide groove, the anti-friction half-plate directly contacts the vertical retraction position, avoiding collision and wear on the support rod.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. The movement of the ball and piston rod is controlled by the height of the water flow and the airflow. The upward movement of the piston rod drives the rotary drive mechanism, which can drive the vent pipe according to the height of the ball. This avoids direct contact between the vent pipe and the ball, thus forming a short-distance delayed collision, transferring wear, effectively reducing wear on both the vent pipe and the ball, ensuring the overall sealing of the equipment, and extending its service life.

[0026] 2. By shifting the wear location to between the housing and the vent pipe, a separate diaphragm gasket can be used to isolate the flange pipe from the vacuum suppressor. This not only increases the sealing effect, but also avoids direct contact between the ball and the vent pipe by using the thickened end and the vertical surface. Furthermore, the water overflowing from the ball as it moves upward is returned by the downward inclined end to prevent waste.

[0027] 3. Since the flow rate is within a small range, there is no need to compensate for a large amount of air. The conical hole and inverted conical shell slow down the air flow. At the same time, the sealing gasket seals multiple vent holes, which can always use clean air and effectively prevent possible pollution. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the flow stabilization compensation tank of the present invention;

[0030] Figure 3 This is a schematic diagram of the vacuum suppressor of the present invention;

[0031] Figure 4 This is a schematic diagram of the rotary drive mechanism of the present invention;

[0032] Figure 5 This is a schematic diagram of the transmission component of the present invention;

[0033] Figure 6 This is a schematic diagram of the slide groove of the present invention;

[0034] Figure 7This is a schematic diagram of the sealing gasket structure of the present invention;

[0035] Figure 8 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0036] In the diagram: 1. Water pump assembly; 2. Intelligent control cabinet; 3. Flow stabilization compensation tank; 4. Flange pipe; 5. Vacuum suppressor; 51. Housing; 511. Vent hole; 52. Piston rod; 521. Sealing gasket; 53. Sphere; 54. Vent pipe; 541. Conical hole; 6. Pressure tank; 7. Diaphragm gasket; 71. Thickened end; 72. Lower inclined end; 73. Fitting end; 8. Rotary drive mechanism; 81. Support rod; 811. Anti-wear half piece; 82. First circular piece; 8 21. Barrier plate; 822. Straight groove; 83. Sliding groove; 831. Sloping end face; 832. Vertical end face; 833. Vertical retraction position; 84. Spring; 85. Transmission assembly; 851. Second circular piece; 8511. Through hole; 852. Telescopic rod; 853. Path groove; 853a. Steep slope end; 853b. Gentle slope end; 854. Limiting support sleeve; 855. Frustum; 86. Limiting spacer; 861. Circular bar; 9. Limiting ring; 10. Inverted conical shell. Detailed Implementation

[0037] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0038] Please see Figures 1 to 8 This invention provides an intelligent negative pressure-free secondary water supply system, the technical solution of which is as follows:

[0039] An intelligent negative pressure-free secondary water supply system includes a water pump assembly 1, an intelligent control cabinet 2, a flow stabilizing compensation tank 3, a flange pipe 4, a vacuum suppressor 5, and a pressure tank 6. The flange pipe 4 is welded to the top of the flow stabilizing compensation tank 3. The vacuum suppressor 5 is installed on the top of the flange pipe 4. A diaphragm gasket 7 and a rotary drive mechanism 8 are also included. When the flow rate inside the flow stabilizing compensation tank 3 requires the vacuum suppressor 5 to continuously balance the pressure, the diaphragm gasket 7 and the rotary drive mechanism 8 are used to buffer and reduce wear, shorten the impact distance, thereby ensuring service life and the normal operation of the water supply system. The vacuum suppressor 5 includes a housing 51, a piston rod 52, a ball 53, and a vent pipe 54. The piston rod 52... The vent pipe 54 is movably installed inside the housing 51 and cooperates with the ball 53. In conventional equipment, the vent pipe 54 is fixedly connected to the housing 51. When sealing, the ball 53 will collide with the vent pipe 54, causing wear. By changing the wear position, the wear at the sealing position can be reduced, which can effectively extend the service life under frequent use and prevent vacuum instability. The ball 53 is fixedly installed at the bottom of the piston rod 52. A diaphragm gasket 7 that cooperates with the ball 53 and the vent pipe 54 is fixedly installed inside the flange pipe 4. The diaphragm gasket 7 is located between the vent pipe 54 and the ball 53, that is, when the housing 51 and the vent pipe 54 are sealed, the vent pipe 54 is fixedly installed inside the flange pipe 4. If wear occurs between the vent pipe 54 and the ball 53, the diaphragm gasket 7 can be used as an intermediate medium for sealing. The diaphragm gasket 7 itself can prevent the vent pipe 54 from colliding with the ball 53. Furthermore, when the ball 53 impacts and seals the diaphragm gasket 7, the top of the diaphragm gasket 7 is unsupported, and the impact is absorbed without damage. After the ball 53 and the diaphragm gasket 7 are sealed, the vent pipe 54 will quickly fall back within a short distance, thus reinforcing the seal on the top of the diaphragm gasket 7. The housing 51 contains a rotary drive mechanism 8 that cooperates with the vent pipe 54. After the ball 53 moves upward to the designated position due to buoyancy and airflow, the piston rod 52 is driven by the rotary drive mechanism... The rotating drive mechanism 8 drives the vent pipe 54 to move upward. After the ball 53 continues to move upward to the set position, the rotating drive mechanism 8 will drive the vent pipe 54 to move downward. When the ball 53 moves to the top position, the rotating drive mechanism 8 drives the vent pipe 54 to seal above the diaphragm gasket 7 and the ball 53. In other words, the rotating drive mechanism 8 controls the position of the vent pipe 54 according to the water volume, and arranges the movement of the vent pipe 54 in stages, so that the last small part of the distance of the vent pipe 54 will only move after the ball 53 reaches the top and is sealed. The rotating drive mechanism 8 causes a delay in the movement of the vent pipe 54, and the delay time is 0.Between 5 seconds and 1 second, direct impact between the two is avoided, effectively stabilizing and maintaining normal water pressure, ensuring the normal operation of the water supply system. The diaphragm gasket 7 includes a thickened end 71, a downward-sloping end 72, and a fitting end 73. The diaphragm gasket 7 can be made of fluororubber, which has a certain degree of hardness but still has sufficient elasticity and softness. The diaphragm gasket 7 gradually thickens from the outer edge to the center while being slightly inclined. The thickened end 71 is located near the center of the diaphragm gasket 7 to compensate for the wear caused by continuous impact. Above the thickened end 71 is the downward-sloping end 72. When water is squeezed out by the ball 53 to the top of the diaphragm gasket 7, the inclined angle causes the water to gather towards the inclined end, while the downward-sloping end 72... Water is smoothly returned to the interior of the flow stabilization tank 3. Below the thickened end 71 is the fitting end 73. The material of the diaphragm gasket 7 can accommodate different regular shapes. By using the fitting end 73, which has the same shape as the sphere 53, they fit together, increasing the seal and reducing wear. Due to changes in water flow, the height of the sphere 53 continuously changes, causing it to constantly impact the thickened end 71. The vertical surface between the lower inclined end 72 and the fitting end 73 prevents the sphere 53 from contacting the vent pipe 54, while also allowing for wear distance. This helps maintain the stability of the sealing system, ensuring consistent performance even during long-term operation or high-frequency use, preventing impacts and guaranteeing a seal.

[0040] As one embodiment of the present invention, refer to Figure 4The rotary drive mechanism 8 includes a support rod 81, a first circular piece 82, a slide groove 83, a spring 84, a transmission assembly 85, and a limiting sleeve 86. The support rod 81 is fixedly disposed in the middle of the piston rod 52. The inside of the first circular piece 82 is rotatably connected to the piston rod 52, and the outside of the first circular piece 82 is rotatably connected to the vent pipe 54. The length of the support rod 81 is greater than the radius of the first circular piece 82, and the support rod 81 is circular. The limiting sleeve 86 is fixedly installed inside the housing 51. The spring 84 is fixedly connected between the limiting sleeve 86 and the first circular piece 82. The slide groove 83 is formed at the bottom of the first circular piece 82. The vertical distance from the lowest point to the highest point of the slide groove 83 is equal to the distance from the specified distance to the top of the sphere 53. First, the support rod 81 will push the first circular piece 82 to move a certain distance. When the first circular piece 82 falls back, the support rod 81 continues to move upward. At this time, the support rod 81 will be positioned... Inside the slide groove 83, when the ball 53 reaches the top, the support rod 81 will also completely match the slide groove 83. At this time, the vent pipe 54 will also be reset and sealed. There are two slide grooves 83 and two support rods 81, which are symmetrical about the central axis of the piston rod 52. The bottom of the transmission assembly 85 is connected to the top of the first circular piece 82. The transmission assembly 85 is connected to the piston rod 52. When the ball 53 moves up to the designated position, the support rod 81 contacts the bottom of the first circular piece 82. The contact surface between the first circular piece 82 and the support rod 81 is smoothed to prevent jamming caused by mutual squeezing during support, which would prevent the first circular piece 82 from rotating. The support rod 81 and the slide groove 83 are intersecting. When they first contact, they are in an intersecting state to provide effective support. When the ball 53 moves up to the set position, the transmission assembly 85 drives the first circular piece 82 to rotate, and the support rod 81 will enter the interior of the slide groove 83.

[0041] As one embodiment of the present invention, refer to Figures 4-6The transmission assembly 85 includes a second circular member 851, a telescopic rod 852, a path groove 853, a limiting support sleeve 854, and a frustum 855. The interior of the second circular member 851 is rotatably connected to the piston rod 52. The telescopic rod 852 is fixedly connected between the second circular member 851 and the first circular member 82. The path groove 853 is formed on the surface of the second circular member 851. When the second circular member 851 moves upward, the frustum 855 enters the path groove 853. The top of the path groove 853 is a steep slope end 853a, which initially provides strong power, causing the first circular member 82 to rotate rapidly with a small amplitude. At this time, the support rod 81 is located at the edge of the slide groove 83. The remaining part of the path groove 853 is a gentle slope end 853b, the length of which is three times that of the steep slope end 853a. The limiting support sleeve 854 is fixedly installed inside the housing 51. The internal rotating part is equipped with a frustum 855. When the frustum 855 reaches the ramp end 853b, the ball 53 reaches the set position. At this time, the frustum 855 can be used to move within the ramp end 853b, driving the first circular part 82 to rotate slowly and significantly. The interiors of the limiting sleeve 86 and the limiting support sleeve 854 are slidably connected to the piston rod 52. The interior of the second circular part 851 has a through hole 8511. A round bar 861 is fixedly installed on the top of the limiting sleeve 86. When the frustum 855 leaves the path groove 853, the round bar 861 enters the interior of the through hole 8511. Since the second circular part 851 will be affected by gravity when it retracts, it may be deviated during repeated operation. Therefore, the frustum 855 and the round bar 861 are used to keep the second circular part 851 in a limited state to ensure good performance.

[0042] As one embodiment of the present invention, refer to Figure 5The slide 83 includes a ramp end face 831, a vertical end face 832, and a vertical retraction position 833. The side of the slide 83 away from the piston rod 52 is the ramp end face 831, and the side of the slide 83 closer to the piston rod 52 is the vertical end face 832, so that one side of the support rod 81 will not collide with the slide 83. The contact end between the ramp end face 831 and the vertical end face 832 is the vertical retraction position 833. When the ball 53 moves up to the fingertip position, the support rod 81 will enter the vertical retraction position 833, thereby compressing the retraction distance and time of the vent pipe 54 into two segments. One segment is a movement synchronized with the support rod 81, but the support rod 81 will... The impact is mitigated by the obstruction. Secondly, when the support rod 81 reaches the top with the housing 51, the first circular piece 82 has rotated 90 degrees. Since the support rod 81 is in contact with the vertical retraction position 833 and the height of the vertical retraction position 833 is lower than the radius of the support rod 81, the impact distance is shortened to ensure the most important wear resistance. At the same time, the short distance ensures that when the support rod 81 moves downward, it will quickly move out of the vertical retraction position 833 first. When the first circular piece 82 rotates, the support rod 81 is always in contact with the slope end face 831 and will not be squeezed. Finally, the support rod 81 gradually separates from the first circular piece 82.

[0043] As one embodiment of the present invention, refer to Figure 2 A limiting ring 9 is fixedly installed inside the housing 51. The limiting ring 9 is located above the vent pipe 54. The limiting ring 9 limits the maximum height of the vent pipe 54 to prevent excessive compression of the spring 84. In addition, there is a conventional limiting structure between the vent pipe 54 and the housing 51, which allows the vent pipe 54 to rotate in both directions. The top of the vent pipe 54 has multiple conical holes 541. The top of the limiting ring 9 is provided with an inverted conical shell 10. The inverted conical shell 10 gradually tapers upward and has a round opening at the top. The inverted conical shell 10 wraps around the conical holes 541. The inverted conical shell 10 is located below the limiting sleeve 86. When the airflow enters the housing 51, it is usually filtered by the filter, but debris or external polluted air may also enter, causing water pollution. For frequent small flow fluctuations, excessive compensation and balancing are not required. When the airflow is discharged, it is restricted by the conical holes 541 and also by the inverted conical shell 10. If airflow compensation is required, the restricted airflow will quickly return to the interior of the flow stabilization compensation tank 3.

[0044] As one embodiment of the present invention, refer to Figure 7A sealing gasket 521 is fixedly installed on the top of the piston rod 52. The outer side of the sealing gasket 521 is in contact with the inner wall of the housing 51. The length of the sealing gasket 521 is the length of the ball 53 from the designated position to the top position. The sealing gasket 521 does not contact the limiting support sleeve 854 and the limiting spacer sleeve 86. Multiple vent holes 511 are provided at the contact point between the top of the housing 51 and the outer side of the sealing gasket 521. When the piston rod 52 moves a short distance due to the change in flow rate, the inside of the flow stabilization compensation tank 3 does not need to compensate for a lot of air. The vent holes 511 on the contact surface between the sealing gasket 521 and the housing 51 will be closed, leaving only a few vent holes 511 to buffer the air supply and reduce external air pollution. When the water volume is low, the ball 53 drops rapidly and compensation is needed to prevent negative pressure. Due to the length of the sealing gasket 521, the vent holes 511 are not restricted, allowing air to quickly enter the inside of the flow stabilization compensation tank 3 to prevent negative pressure.

[0045] As one embodiment of the present invention, refer to Figure 6 The chute 83 has a straight groove 822 at the position of the inclined end face 831. The number of straight grooves 822 gradually increases as it approaches the vertical retraction position 833. When the support rod 81 enters the chute 83, it will be blocked by the straight grooves 822, thus buffering. At the same time, the buffering force gradually increases, reducing the final fall impact. The bottom of the first circular piece 82 is provided with a baffle plate 821. The baffle plate 821 is higher than the radius of the support rod 81. The number of baffle plates 821 corresponds to the number of support rods 81. When the support rod 81 is pushed under the first circular piece 82, it can be limited by the baffle plate 821 to ensure the stability of the push. The contact surface between the support rod 81 and the first circular piece 82 is provided with an anti-wear half plate 811 to resist wear on the half of the support rod 81 and prevent the straight groove 822 from causing a large obstruction and impact on the support rod 81.

[0046] Working principle: During peak usage periods, the municipal water network flow is unstable. At this time, the water volume inside the flow stabilization compensation tank 3 changes to a certain extent. Due to the change in water volume, the sphere 53 and piston rod 52 move downwards with the water flow to replenish airflow and balance pressure. When the water volume is sufficient, the sphere 53 and piston rod 52 move upwards. The piston rod 52 drives the support rod 81 and transmission assembly 85 to move upwards synchronously. When the sphere 53 reaches the designated position, the support rod 81 contacts the bottom of the first circular piece 82, thereby driving its... Synchronously moving, the first circular component 82 will drive the vent pipe 54 to move upwards synchronously. At this time, the limiting sleeve 86 will extend and retract, while the spring 84 will compress. As the ball 53 gradually moves upwards, the frustum 855 will first enter the interior of the path groove 853. At this time, the second circular component 851 will rotate, and then the first circular component 82 will rotate through the telescopic rod 852. Secondly, when the frustum 855 reaches the gentle slope end 853b, that is, when the ball 53 moves upwards to the set position, due to the rotation of the first circular component 82 and... As the strut 81 moves upward, it enters the groove 83. Using the compression of the strut 81 and the rebound of the spring 84, the first circular piece 82 moves the vent pipe 54 downward. When the piston rod 52 reaches its top, the ball 53 contacts the mating end 73 of the diaphragm gasket 7. At this point, the first circular piece 82 is parallel to the groove 83, and is no longer restricted by the strut 81. Due to gravity and the rebound force of the spring 84, the first circular piece 82 causes the strut 81 to quickly enter the vertical retraction position 833. The length of the vertical retraction position 833 is less than the radius of the support rod 81, thus shortening the impact distance, which can greatly reduce wear and extend the service life. At this time, the vent pipe 54 will fall completely back to the lower inclined end 72 of the diaphragm gasket 7 for sealing. When it falls back, the component moves in the opposite direction. When the support rod 81 falls back quickly, the first circular piece 82 rotates and the inclined end face 831 will fit with the support rod 81 until the support rod 81 leaves the inside of the slide groove 83, making contact to avoid jamming, and finally performing the reset work.

[0047] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention are existing technologies known to those skilled in the art.

Claims

1. An intelligent negative pressure-free secondary water supply system, comprising a water pump assembly (1), an intelligent control cabinet (2), a flow stabilizing compensation tank (3), a flange pipe (4), a vacuum suppressor (5), and a pressure tank (6), wherein the flange pipe (4) is welded to the top of the flow stabilizing compensation tank (3), and the vacuum suppressor (5) is installed on the top of the flange pipe (4), characterized in that: It also includes a diaphragm gasket (7) and a rotary drive mechanism (8). The vacuum suppressor (5) includes a housing (51), a piston rod (52), a ball (53), and a vent pipe (54). The piston rod (52) is movably installed inside the housing (51). The vent pipe (54) is movably installed inside the housing (51) and cooperates with the ball (53). The ball (53) is fixedly installed at the bottom of the piston rod (52). A diaphragm gasket (7) that cooperates with the ball (53) and the vent pipe (54) is fixedly installed inside the flange pipe (4). The diaphragm gasket (7) is located between the vent pipe (54) and the ball (53). Between 53), the interior of the housing (51) is provided with a rotary drive mechanism (8) that cooperates with the vent pipe (54). After the ball (53) moves upward to the designated position with buoyancy and airflow, the piston rod (52) drives the vent pipe (54) to move upward through the rotary drive mechanism (8). After the ball (53) continues to move upward to the set position, the rotary drive mechanism (8) will drive the vent pipe (54) to move downward when the ball (53) moves upward. When the ball (53) moves to the top position, the rotary drive mechanism (8) drives the vent pipe (54) to seal above the diaphragm gasket (7) and the ball (53).

2. The intelligent negative pressure-free secondary water supply system according to claim 1, characterized in that: The rotary drive mechanism (8) includes a support rod (81), a first circular piece (82), a slide groove (83), a spring (84), a transmission assembly (85), and a limiting sleeve (86). The support rod (81) is fixedly disposed in the middle of the piston rod (52). The interior of the first circular piece (82) is rotatably connected to the piston rod (52), and the exterior of the first circular piece (82) is rotatably connected to the vent pipe (54). The length of the support rod (81) is greater than the radius of the first circular piece (82). The support rod (81) is circular. The limiting sleeve (86) is fixedly installed inside the housing (51). The spring (84) is fixedly connected between the limiting sleeve (86) and the first circular piece (82). The slide groove (83) is formed in the first circular piece (82). The vertical distance from the lowest point to the highest point of the slide groove (83) is equal to the distance from the specified distance to the top of the ball (53). The slide groove (83) and the support rod (81) are both provided in twos and are symmetrical about the central axis of the piston rod (52). The bottom of the transmission assembly (85) is connected to the top of the first circular piece (82). The transmission assembly (85) is connected to the piston rod (52). When the ball (53) moves up to the specified position, the support rod (81) contacts the bottom of the first circular piece (82). The contact surface between the first circular piece (82) and the support rod (81) is smoothed. The support rod (81) intersects with the slide groove (83). When the ball (53) moves up to the set position, the support rod (81) will enter the interior of the slide groove (83).

3. The intelligent negative pressure-free secondary water supply system according to claim 2, characterized in that: The transmission assembly (85) includes a second circular component (851), a telescopic rod (852), a path groove (853), a limiting support sleeve (854), and a frustum (855). The interior of the second circular component (851) is rotatably connected to the piston rod (52). The telescopic rod (852) is fixedly connected between the second circular component (851) and the first circular component (82). The surface of the second circular component (851) is provided with a path groove (853). When the second circular component (851) moves upward, the frustum (855) will enter the path. The groove (853) has a steep slope end (853a) at the top and a gentle slope end (853b) at the rest of the groove (853). The length of the gentle slope end (853b) is three times that of the steep slope end (853a). The limiting support sleeve (854) is fixedly installed inside the housing (51). A frustum (855) is rotatably arranged inside the limiting support sleeve (854). When the frustum (855) reaches the gentle slope end (853b), the sphere (53) reaches the set position.

4. The intelligent negative pressure-free secondary water supply system according to claim 2, characterized in that: The chute (83) includes a ramp end face (831), a vertical end face (832), and a vertical retraction position (833). The side of the chute (83) away from the piston rod (52) is the ramp end face (831), and the side of the chute (83) closer to the piston rod (52) is the vertical end face (832). The contact end between the ramp end face (831) and the vertical end face (832) is the vertical retraction position (833). When the ball (53) moves up to the fingertip position, the support rod (81) will enter the vertical retraction position (833). The support rod (81) fits against the vertical retraction position (833), and the height of the vertical retraction position (833) is lower than the radius of the support rod (81).

5. The intelligent negative pressure-free secondary water supply system according to claim 1, characterized in that: The diaphragm gasket (7) includes a thickened end (71), a downward sloping end (72), and a bonding end (73). The diaphragm gasket (7) gradually thickens from the outer edge to the center while being slightly inclined. The thickened end (71) is located near the center of the diaphragm gasket (7). The downward sloping end (72) is above the thickened end (71), and the bonding end (73) is below the thickened end (71). There is a vertical surface between the downward sloping end (72) and the bonding end (73).

6. The intelligent negative pressure-free secondary water supply system according to claim 3, characterized in that: The interior of the limiting sleeve (86) and the limiting support sleeve (854) are slidably connected to the piston rod (52). The interior of the second round piece (851) is provided with a through hole (8511). A round strip (861) is fixedly provided on the top of the limiting sleeve (86). When the truncated cone (855) leaves the path groove (853), the round strip (861) enters the interior of the through hole (8511).

7. The intelligent negative pressure-free secondary water supply system according to claim 3, characterized in that: A sealing gasket (521) is fixedly provided on the top of the piston rod (52). The outer side of the sealing gasket (521) is in contact with the inner wall of the housing (51). The length of the sealing gasket (521) is the length of the ball (53) from the designated position to the top position. The sealing gasket (521) does not contact the limiting support sleeve (854) and the limiting spacer sleeve (86). Multiple vent holes (511) are provided at the contact point between the top of the housing (51) and the outer side of the sealing gasket (521).

8. The intelligent negative pressure-free secondary water supply system according to claim 2, characterized in that: A limiting ring (9) is fixedly installed inside the housing (51). The limiting ring (9) is located above the vent pipe (54). The top of the vent pipe (54) has multiple conical holes (541). The top of the limiting ring (9) is provided with an inverted conical shell (10). The inverted conical shell (10) gradually narrows upward and has a round opening at the top. The inverted conical shell (10) wraps around the conical holes (541). The inverted conical shell (10) is located below the limiting spacer (86).

9. The intelligent negative pressure-free secondary water supply system according to claim 4, characterized in that: The chute (83) is provided with a straight groove (822) at the position of the slope end face (831), and the number of straight grooves (822) gradually increases as they approach the vertical retraction position (833).

10. The intelligent negative pressure-free secondary water supply system according to claim 2, characterized in that: The bottom of the first circular piece (82) is provided with a barrier plate (821), the barrier plate (821) is higher than the radius of the support rod (81), the number of barrier plates (821) corresponds to the number of support rods (81), and the contact surface between the support rod (81) and the first circular piece (82) is provided with an anti-wear half plate (811).

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