Constant-pressure water replenishing device with replaceable water bag
By connecting the water bladder to the housing at both ends and combining it with a pressure regulating valve and an air pump, the problems of complex water bladder replacement and insufficient pressure accuracy in traditional constant pressure water supply devices are solved. This enables rapid water bladder replacement and high-precision pressure control, improving system stability and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-24
AI Technical Summary
The water bladder of the traditional constant pressure water supply device is fixedly connected to the shell, which makes the replacement operation complicated and the maintenance cost high. In addition, the adjustment accuracy of the constant pressure mechanism is insufficient, which can easily lead to system pressure fluctuations.
A replaceable water bladder constant pressure water replenishment device was designed. By setting upper and lower connecting parts at the upper and lower ends of the water bladder to connect with the water inlet and outlet of the shell, and combining with a pressure regulating valve and an air pump, high-precision constant pressure is achieved. The water bladder is easy to disassemble and assemble through locking joints and sealing gaskets.
It enables quick replacement of the water bladder without disassembling the shell, improving system stability and pressure control accuracy, and reducing maintenance difficulty and cost.
Smart Images
Figure CN224033881U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pressure control technology for water circulation systems, specifically a replaceable water bladder constant pressure water replenishment device. Background Technology
[0002] The constant pressure water supply device is a commonly used constant pressure water supply equipment in air conditioning and heating systems. It can automatically stabilize the pressure and supply water in central air conditioning systems or other systems that widely use water or ethylene glycol as heat transfer medium in many shopping malls, factories and modern office buildings. Compared with the traditional open expansion tank constant pressure, it has the advantages of flexible installation location, no noise pollution and no gas pollution. Therefore, it is widely used in the HVAC constant pressure industry.
[0003] Traditional constant pressure water supply devices typically have their water bladders fixedly connected to the shell. Replacement requires disassembling the entire structure, which is complex and costly to maintain. In addition, the existing devices have insufficient pressure regulation precision, which can easily lead to system pressure fluctuations.
[0004] Therefore, there is an urgent need for a device that facilitates water bladder replacement and provides precise pressure control. To this end, a replaceable water bladder constant pressure water replenishment device is proposed. Utility Model Content
[0005] In view of the shortcomings of the prior art, this utility model provides a replaceable water bladder constant pressure water replenishment device, which overcomes the shortcomings of the prior art and solves the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a replaceable water bladder pressure-regulating water replenishment device, comprising a housing, a water bladder and a pressure-regulating mechanism, wherein the top and bottom ends of the housing are respectively provided with a water inlet and a water outlet, a first locking connector is threadedly connected to the water inlet, and a second locking connector is threadedly connected to the water outlet.
[0007] The water bladder is fixedly installed with an upper connector and a lower connector at its upper and lower ends, respectively. The upper connector is connected to the water inlet through a first locking joint, and the lower connector is connected to the drain outlet through a second locking joint. The inner sides of the first locking joint and the second locking joint are respectively provided with a first sealing gasket and a second sealing gasket.
[0008] The pressure regulating mechanism consists of an air bladder formed between the water bladder and the shell, a pressure regulating valve, and an air pump.
[0009] The pressure regulating valve and air pump work together to set the airbag pressure value to the system target pressure. The airbag and pressure regulating valve work together to achieve high-precision pressure control and improve system stability. The water bag can be disassembled and installed with the water inlet and outlet of the shell through the upper and lower connectors at its upper and lower ends. When replacing the water bag, simply rotate and loosen the first and second locking connectors to remove the old water bag and replace it. The entire process does not require disassembling the shell.
[0010] As a preferred embodiment of this utility model, a lifting ring is fixedly installed on the top of the shell, and a support leg is fixedly installed on the bottom of the shell.
[0011] The lifting rings located on the top of the shell facilitate hoisting and movement, while the support legs support the shell, ensuring its stable operation.
[0012] As a preferred embodiment of this utility model, the outer side wall of the housing is provided with a transparent observation window and an inspection port in sequence, and a cover plate is detachably installed on the inspection port.
[0013] The transparent viewing window allows for a direct view of the interior of the casing, while the inspection port allows for internal inspection without disassembling the casing.
[0014] As a preferred technical solution of this utility model, the inner wall of the water inlet is provided with a plurality of first vertical grooves, and the bottom ends of the plurality of first vertical grooves are connected to a first annular groove. The outer wall of the upper connector is formed with a first locking block that is adapted to the first vertical groove, and the inner wall of the upper connector is formed with a first internal hexagonal groove.
[0015] The upper connector can move vertically downward along the first vertical groove via the first locking block, and can rotate the upper connector when the first locking block reaches the inside of the first annular groove so that the first locking block engages with the first annular groove, enabling quick assembly and disassembly.
[0016] As a preferred technical solution of this utility model, the inner sidewall of the drain outlet is provided with a plurality of second vertical grooves, and the bottom ends of the plurality of second vertical grooves are connected to a second annular groove. The outer sidewall of the lower connector is formed with a second locking block that is adapted to the second vertical grooves, and the inner wall of the lower connector is formed with a second internal hexagonal groove.
[0017] The lower connector can move vertically downward along the second vertical groove via the second locking block, and can rotate the lower connector when the second locking block reaches the inside of the second annular groove so that the second locking block engages with the second annular groove, enabling quick assembly and disassembly.
[0018] In a preferred embodiment of this invention, the radius of the lower connector is smaller than that of the upper connector.
[0019] When assembling or disassembling the water bladder, the bottom of the water bladder can be inserted into the bottom of the shell through the water inlet at the top of the shell for installation. When removing the water bladder, it can be gradually removed through the water inlet at the top of the shell.
[0020] As a preferred embodiment of this utility model, a first pressure sensor is installed on the first locking joint, and a regulating valve interface is installed on the second locking joint.
[0021] The pressure inside the water bladder can be determined by the first pressure sensor, and the regulating valve interface can be connected to an external regulating valve for depressurizing the inside of the water bladder.
[0022] In a preferred embodiment of this invention, the airbag is connected to the air pump via a pressure regulating valve, and a second pressure sensor is integrated on the pressure regulating valve.
[0023] The airbag works in conjunction with the pressure regulating valve to achieve high-precision pressure control and improve system stability. The second pressure sensor integrated on the pressure regulating valve can be linked with an external controller to achieve automatic pressure regulation.
[0024] Compared with the prior art, the beneficial effects of this utility model are:
[0025] The pressure regulating valve and air pump work together to set the airbag pressure value to the system target pressure. The airbag and pressure regulating valve work together to achieve high-precision pressure control and improve system stability. The water bag can be disassembled and installed with the water inlet and outlet of the shell through the upper and lower connectors at its upper and lower ends. When replacing the water bag, simply rotate and loosen the first and second locking connectors to remove the old water bag and replace it. The entire process does not require disassembling the shell. Attached Figure Description
[0026] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;
[0027] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ;
[0028] Figure 3 This is a side view of the present invention;
[0029] Figure 4 For the present utility model Figure 3 Schematic diagram of the cross section at point AA;
[0030] Figure 5 For the present utility model Figure 4 Enlarged view of a portion of point B in the middle;
[0031] Figure 6 For the present utility model Figure 4 A magnified view of a portion of point C in the middle.
[0032] In the diagram: 1. Housing; 2. Support leg; 3. Transparent observation window; 4. Inspection port; 5. Cover plate; 6. Lifting ring; 7. Water bladder; 8. Upper connector; 9. First locking block; 10. First internal hexagonal groove; 11. First vertical groove; 12. First annular groove; 13. First locking joint; 14. First sealing gasket; 15. First pressure sensor; 16. Lower connector; 17. Second locking block; 18. Second internal hexagonal groove; 19. Second vertical groove; 20. Second annular groove; 21. Second locking joint; 22. Second sealing gasket; 23. Regulating valve interface; 24. Second pressure sensor; 25. Pressure regulating valve; 26. Air pump. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0034] Please see Figure 1-6 A replaceable water bladder pressure-regulating water replenishment device includes a housing 1, a water bladder 7, and a pressure-regulating mechanism. The housing 1 has an inlet and an outlet at its top and bottom, respectively. A first locking connector 13 is threaded to the inlet, and a second locking connector 21 is threaded to the outlet. An upper connector 8 and a lower connector 16 are fixedly installed at the upper and lower ends of the water bladder 7, respectively. The upper connector 8 is connected to the inlet via the first locking connector 13, and the lower connector 16 is connected to the outlet via the second locking connector 21. A first sealing gasket 14 and a second sealing gasket 15 are respectively disposed inside the first locking connector 13 and the second locking connector 21. The gasket 22 and the pressure regulating mechanism consist of an air bladder formed between the water bladder 7 and the housing 1, a pressure regulating valve 25, and an air pump 26. Through the cooperation of the pressure regulating valve 25 and the air pump 26, the air bladder pressure can be set to the system target pressure. The air bladder and the pressure regulating valve 25 work together to achieve high-precision pressure regulation and improve system stability. The water bladder 7 can be disassembled and installed with the water inlet and outlet of the housing 1 through the upper connector 8 and the lower connector 16 at its upper and lower ends. When replacing the water bladder 7, the old water bladder 7 can be taken out upward and replaced by rotating and loosening the first locking connector 13 and the second locking connector 21. The housing 1 does not need to be disassembled throughout the process.
[0035] Specifically, a lifting ring 6 is fixedly installed on the top of the housing 1, and a support leg 2 is fixedly installed on the bottom of the housing 1. The lifting ring 6 on the top of the housing 1 facilitates the hoisting and movement of the housing 1, while the support leg 2 supports the housing 1, enabling the housing 1 to operate smoothly.
[0036] Specifically, the outer side wall of the housing 1 is provided with a transparent observation window 3 and an inspection port 4 in sequence. A cover plate 5 is detachably installed on the inspection port 4. The transparent observation window 3 allows for a direct view of the internal condition of the housing 1, while the inspection port 4 allows for inspection of the internal condition of the housing 1 without disassembling the housing 1.
[0037] Specifically, the inner wall of the inlet is provided with a number of first vertical grooves 11, and the bottom ends of the number of first vertical grooves 11 are connected to a first annular groove 12. The outer wall of the upper connector 8 is formed with a first locking block 9 that is adapted to the first vertical groove 11. The inner wall of the upper connector 8 is formed with a first internal hexagonal groove 10. The upper connector 8 can move vertically downward along the first vertical groove 11 through the first locking block 9, and can rotate the upper connector 8 when the first locking block 9 reaches the inside of the first annular groove 12 so that the first locking block 9 is engaged with the first annular groove 12, which can realize quick disassembly and assembly operations.
[0038] Specifically, the inner wall of the drain outlet is provided with several second vertical grooves 19, and the bottom ends of several second vertical grooves 19 are connected to a second annular groove 20. The outer wall of the lower connector 16 is formed with a second locking block 17 that is adapted to the second vertical groove 19. The inner wall of the lower connector 16 is formed with a second internal hexagonal groove 18. The lower connector 16 can move vertically downward along the second vertical groove 19 through the second locking block 17, and can rotate the lower connector 16 when the second locking block 17 reaches the inside of the second annular groove 20 so that the second locking block 17 is engaged with the second annular groove 20, which can realize quick disassembly and assembly operations.
[0039] Specifically, the radius of the lower connector 16 is smaller than that of the upper connector 8. When assembling or disassembling the water bladder 7, the bottom of the water bladder 7 can be first inserted into the bottom of the housing 1 through the water inlet at the top of the housing 1 for installation. When removing the water bladder 7, it can be gradually removed through the water inlet at the top of the housing 1.
[0040] Specifically, a first pressure sensor 15 is installed on the first locking connector 13, and a regulating valve interface 23 is installed on the second locking connector 21. The pressure value inside the water bladder 7 can be determined by the first pressure sensor 15, and the regulating valve interface 23 can be connected to an external regulating valve for depressurizing the inside of the water bladder 7.
[0041] Specifically, the airbag is connected to the air pump 26 via a pressure regulating valve 25, and a second pressure sensor 24 is integrated on the pressure regulating valve 25. The airbag and the pressure regulating valve 25 work together to achieve high-precision pressure control and improve system stability. The second pressure sensor 24 integrated on the pressure regulating valve 25 can be linked with an external controller to achieve automatic pressure adjustment.
[0042] Working principle: First, disassemble the cover plate 5, the first locking connector 13, and the second locking connector 21 respectively. Then, insert the bottom end of the water bladder 7 into the interior of the housing 1 through the water inlet at the top of the housing 1. Then, through the inspection port 4, insert the lower connector 16 at the bottom of the water bladder 7 into the drain outlet. The lower connector 16 can be vertically downward along the second vertical groove 19 via the second locking block 17. When the second locking block 17 reaches the interior of the second annular groove 20, the lower connector 16 can be rotated using a tool that matches the second internal hexagonal groove 18 to engage the second locking block 17 with the second annular groove 20. Then, thread the second locking connector 21 onto the drain outlet of the housing 1. Then, the upper connector... The connector 8 can move vertically downward along the first vertical groove 11 via the first locking block 9, and can rotate the connector 8 when the first locking block 9 reaches the first annular groove 12 so that the first locking block 9 engages with the first annular groove 12. The first locking connector 13 is then installed at the water inlet of the housing 1. The cover plate 5 is then reset and installed. The pressure inside the air bladder is adjusted by the air pump 26. When the pressure inside the air bladder decreases, water is added to the water bladder 7. When the pressure is too high, the water bladder 7 is added to the outside. When replacing the water bladder 7, the first locking connector 13 and the second locking connector 21 are rotated to loosen the water bladder 7, and the old water bladder 7 can be taken out and replaced. The housing 1 does not need to be disassembled throughout the process.
[0043] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A replaceable water bladder pressure-regulating water replenishment device, comprising a housing, a water bladder, and a pressure-regulating mechanism, characterized in that: The top and bottom of the shell are respectively provided with a water inlet and a water outlet. A first locking connector is threaded to the water inlet and a second locking connector is threaded to the water outlet. The water bladder is fixedly installed with an upper connector and a lower connector at its upper and lower ends, respectively. The upper connector is connected to the water inlet through a first locking joint, and the lower connector is connected to the drain outlet through a second locking joint. The inner sides of the first locking joint and the second locking joint are respectively provided with a first sealing gasket and a second sealing gasket. The pressure regulating mechanism consists of an air bladder formed between the water bladder and the shell, a pressure regulating valve, and an air pump.
2. The replaceable water bladder pressure-regulating water replenishment device according to claim 1, characterized in that: A lifting ring is fixedly installed on the top of the housing, and a support leg is fixedly installed on the bottom of the housing.
3. The replaceable water bladder pressure-regulating water replenishment device according to claim 1, characterized in that: The outer wall of the housing is provided with a transparent observation window and an inspection port in sequence, and a cover plate can be detachably installed on the inspection port.
4. The replaceable water bladder pressure-regulating water replenishment device according to claim 1, characterized in that: The inner wall of the water inlet is provided with a plurality of first vertical grooves, and the bottom ends of the plurality of first vertical grooves are connected to a first annular groove. The outer wall of the upper connector is provided with a first locking block that is adapted to the first vertical grooves, and the inner wall of the upper connector is provided with a first internal hexagonal groove.
5. The replaceable water bladder pressure-regulating water replenishment device according to claim 1, characterized in that: The inner wall of the drain outlet is provided with a number of second vertical grooves, and the bottom ends of the number of second vertical grooves are connected to a second annular groove. The outer wall of the lower connector is formed with a second locking block that is adapted to the second vertical grooves, and the inner wall of the lower connector is formed with a second internal hexagonal groove.
6. The replaceable water bladder pressure-regulating water replenishment device according to claim 1, characterized in that: The radius of the lower connector is smaller than that of the upper connector.
7. The replaceable water bladder pressure-regulating water replenishment device according to claim 1, characterized in that: The first locking joint is equipped with a first pressure sensor, and the second locking joint is equipped with a regulating valve interface.
8. The replaceable water bladder pressure-regulating water replenishment device according to claim 1, characterized in that: The airbag is connected to the air pump via a pressure regulating valve, and a second pressure sensor is integrated on the pressure regulating valve.