Buried non-negative pressure water supply equipment

Abstract

An underground non-negative pressure water supply device comprises a pressurized water supply unit which is covered with an isolation hood. The lower end face of the isolation cover is provided with a dismounting port communicated with the internal space of the isolation cover. The lower end face of the isolation cover is provided with a seat plate attached to the isolation cover, and the seat plate shields and seals the disassembly and assembly opening. The pressurized water supply unit is arranged on the upper surface of the seat plate; the seat plate and the lower end of the isolation cover are fixed through a fixing structure; the outer wall of the isolation cover is provided with a plurality of pipe guiding holes communicated with the inner space of the isolation cover. A sealing ring matched with the guide pipe hole is arranged in the guide pipe hole; and an inner sealing part attached to the inner wall of the isolation cover is arranged on the outer peripheral surface of the inner end of the sealing ring. The buried non-negative pressure water supply equipment not only can effectively prevent indoor space from being occupied, but also can guarantee that electrical elements are not damaged, and therefore the service life is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to a negative pressure-free water supply device, and more particularly to a buried negative pressure-free water supply device. Background Technology

[0002] Negative pressure-free water supply equipment is a type of secondary pressurized water supply equipment that connects directly to the municipal water supply network and uses the residual pressure of the municipal network to ensure that the pressure of the municipal network is not less than the set protection pressure.

[0003] Because negative pressure water supply equipment contains electrical components, it is generally installed in a dry indoor environment to avoid damage to these components. The pressurized water supply unit of a negative pressure water supply system actually consists of multiple devices, including a flow stabilizing tank, vacuum suppressor, variable frequency speed control pump unit, pressure sensor, variable frequency control cabinet, backflow preventer, disinfection device, and small flow pressure tank. This results in a very large size for the equipment, occupying a significant portion of indoor space and rendering the space unusable for other purposes, thus wasting space resources. While placing the negative pressure water supply equipment outdoors avoids encroachment on indoor space, it also poses a risk of damage to the electrical components, compromising the equipment's lifespan. Summary of the Invention

[0004] The present invention aims to solve the existing technical problem by providing a buried negative pressure-free water supply device, which can not only effectively prevent indoor space from being encroached upon, but also ensure that electrical components are not damaged, thereby effectively guaranteeing service life.

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

[0006] This utility model discloses a buried negative pressure-free water supply device, including a pressurized water supply unit, which is covered by an isolation cover; the lower end face of the isolation cover has a disassembly port communicating with its internal space; the lower end face of the isolation cover has a seat plate that fits against it, and the seat plate covers and seals the disassembly port; the pressurized water supply unit is mounted on the upper surface of the seat plate; the seat plate and the lower end of the isolation cover are fixed together by a fixing structure; the outer wall of the isolation cover has several inlet pipe holes communicating with its internal space; each inlet pipe hole has a matching sealing ring; the outer circumference of the inner end of the sealing ring has a... An inner sealing part is fitted to the inner wall of the isolation cover; an outer sealing part is provided on the outer circumferential surface of the outer end of the sealing ring, which fits to the outer wall of the isolation cover; an operating hole is provided on the upper surface of the isolation cover, which communicates with its internal space; an annular mud-proof seat extends upward from the edge of the operating hole; a matching isolation sleeve is provided on the mud-proof seat, and the isolation sleeve is made of rubber; the upper end surface of the isolation sleeve is higher than the upper end surface of the mud-proof seat; a fastening sleeve is provided on the lower end of the isolation sleeve; the upper inner wall of the fastening sleeve presses the lower inner wall of the isolation sleeve against the outer wall of the mud-proof seat; the diameter of the lower inner wall of the fastening sleeve gradually increases from top to bottom.

[0007] The fixing structure includes several hidden holes evenly distributed in a circle on the lower outer wall of the isolation cover; the lower inner wall of the isolation cover has several through holes that communicate with the hidden holes, the diameter of which is smaller than the diameter of the hidden holes; the upper surface of the base plate has an annular fixing part that is embedded in the disassembly port; the outer wall of the fixing part has several screw holes that communicate with the through holes; a screw passes through the through hole and is screwed into the screw hole, with the head of the screw located in the hidden hole and pressing against the bottom of the hidden hole.

[0008] The fixing part is fitted with an annular sealing gasket made of rubber; the sealing gasket is located between the lower surface of the isolation cover and the upper surface of the base plate.

[0009] The upper surface of the mud-proof seat is covered with a cover plate that fits therewith; there is a movable gap between the outer wall of the cover plate and the inner wall of the isolation sleeve; the lower surface of the cover plate is provided with an annular positioning part, which is embedded in the mud-proof seat; the outer wall of the positioning part fits against the inner wall of the mud-proof seat; a handle is provided at the center of the upper surface of the cover plate.

[0010] The outer wall of the positioning part is provided with an annular sealing groove; the sealing groove is provided with a matching auxiliary ring; the outer wall of the auxiliary ring is provided with a number of auxiliary parts evenly distributed axially; the auxiliary parts are tubular with a wider top and a narrower bottom, and the outer wall of the upper end of the auxiliary parts fits against the inner wall of the mud-proof seat; the auxiliary ring and the auxiliary parts are integrally formed and are both made of rubber.

[0011] The lower outer wall of the insulating sleeve is provided with several force application holes that communicate with its internal space. The force application holes are located inside the lower part of the fastening sleeve.

[0012] The upper and lower outer walls of the isolation cover are provided with several lifting lugs evenly distributed in a circle; the lifting lugs are provided with lifting holes.

[0013] The beneficial effects of this utility model are:

[0014] Compared with existing technologies, the isolation cover of the buried negative pressure water supply equipment using this utility model can conceal the entire pressurized water supply unit inside itself, thus protecting it. Under the isolation of the cover, external factors are extremely difficult to affect the pressurized water supply unit inside. Therefore, simply dig a pit in the indoor ground, place the isolation cover inside, and the pressurized water supply unit can be effectively placed without encroaching on the actual indoor space, allowing the indoor space to be used for other purposes and making effective use of space resources. To ensure the stability of the isolation cover after it is placed in the pit, soil can be filled into the pit to completely fill the gap between the outer wall of the isolation cover and the inner wall of the pit. As the isolation cover is buried underground, although the pressurized water supply unit does not encroach on the actual indoor space, it is still protected by the indoor environment. Even in rainy or snowy weather, it will not be affected, thereby minimizing the risk of corrosion and damage to the electrical components of the negative pressure water supply equipment and effectively extending its service life. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the underground negative pressure-free water supply equipment of this utility model;

[0016] Figure 2 yes Figure 1 An enlarged view of part A;

[0017] Figure 3 yes Figure 1 An enlarged view of part B;

[0018] Figure 4 yes Figure 1 Enlarged view of part C;

[0019] Figure 5 This is a structural diagram of the underground negative pressure-free water supply equipment of this utility model when the isolation sleeve and cover plate are not used. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] Please see Figures 1 to 5This utility model provides a buried negative pressure-free water supply device, including a pressurized water supply unit 1, which is covered by an isolation cover 2; the lower end face of the isolation cover 2 is provided with a disassembly port 3 that communicates with its internal space; the lower end face of the isolation cover 2 is provided with a seat plate 4 that fits against it, and the seat plate 4 covers and seals the disassembly port 3; the pressurized water supply unit 1 is disposed on the upper surface of the seat plate 4; the seat plate 4 and the lower end of the isolation cover 2 are fixed together by a fixing structure; the outer wall of the isolation cover 2 is provided with a plurality of inlet pipe holes 5 that communicate with its internal space; a matching sealing ring 6 is provided in the inlet pipe hole 5; the outer circumferential surface of the inner end of the sealing ring 6 is provided with a joint that meets the inner wall of the isolation cover 2. The inner sealing part 7 fits together; the outer periphery of the outer end of the sealing ring 6 is provided with an outer sealing part 8 that fits together with the outer wall of the isolation cover 2; the upper surface of the isolation cover 2 is provided with an operating hole 9 that communicates with its internal space; an annular mud-proof seat 10 extends upward from the edge of the opening of the operating hole 9; a matching isolation sleeve 11 is fitted over the mud-proof seat 10, the isolation sleeve 11 is made of rubber; the upper end of the isolation sleeve 11 is higher than the upper end of the mud-proof seat 10; a fastening sleeve 12 is fitted over the lower end of the isolation sleeve 11; the upper inner wall of the fastening sleeve 12 presses the lower inner wall of the isolation sleeve 11 against the outer wall of the mud-proof seat 10; the diameter of the lower inner wall of the fastening sleeve 12 gradually increases from top to bottom.

[0022] The fixing structure includes several hidden holes 13 evenly arranged in a circle on the lower outer wall of the isolation cover 2; the lower inner wall of the isolation cover 2 is provided with several through holes 14 that communicate with the hidden holes 13, the diameter of the through holes 14 being smaller than the diameter of the hidden holes 13; the upper surface of the base plate 4 is provided with an annular fixing part 15, which is embedded in the disassembly port 3; the outer wall of the fixing part 15 is provided with several screw holes 16 that communicate with the through holes 14; a screw 17 passes through the through hole 14 and is screwed into the screw hole 16, the head of the screw 17 being located in the hidden hole 13 and pressing against the bottom of the hidden hole 13.

[0023] The fixing part 15 is fitted with an annular sealing gasket 18, which is made of rubber; the sealing gasket 18 is located between the lower surface of the isolation cover 2 and the upper surface of the seat plate 4.

[0024] The upper surface of the mud-proof seat 10 is covered with a cover plate 19 that fits therewith; there is a movable gap 20 between the outer wall of the cover plate 19 and the inner wall of the isolation sleeve 11; the lower surface of the cover plate 19 is provided with an annular positioning part 21, which is embedded in the mud-proof seat 10; the outer wall of the positioning part 21 fits against the inner wall of the mud-proof seat 10; a handle 22 is provided at the center of the upper surface of the cover plate 19.

[0025] The outer wall of the positioning part 21 is provided with an annular sealing groove 23; the sealing groove 23 is provided with a matching auxiliary ring 24; the outer wall of the auxiliary ring 24 is provided with a plurality of axially evenly distributed auxiliary parts 25; the auxiliary parts 25 are tubular with a wider top and a narrower bottom, and the outer wall of the upper end of the auxiliary parts 25 is in contact with the inner wall of the mudproof seat 10; the auxiliary ring 24 and the auxiliary parts 25 are integrally formed and are both made of rubber.

[0026] The lower outer wall of the isolation sleeve 11 is provided with a number of force application holes 26 that communicate with its internal space. The force application holes 26 are located inside the lower part of the fastening sleeve 12.

[0027] The upper and lower outer walls of the isolation cover 2 are provided with a number of evenly distributed circumferential lifting lugs 27; each lifting lug 27 is provided with a lifting hole 28.

[0028] The method of using this utility model is as follows:

[0029] The isolation cover 2 encloses the entire pressurized water supply unit 1, protecting it. Under the isolation of the cover 2, external factors are extremely difficult to affect the pressurized water supply unit 1 inside. Therefore, simply dig a pit in the indoor ground, place the cover 2 inside, and the pressurized water supply unit 1 can be effectively placed without encroaching on the actual indoor space, allowing the space to be used for other purposes and making efficient use of space resources. To ensure the stability of the cover 2 after it is placed in the pit, soil can be filled into the pit to completely fill the gap between the outer wall of the cover 2 and the inner wall of the pit. As the cover 2 is buried in the ground, although the pressurized water supply unit 1 does not encroach on the actual indoor space, it is still protected by the indoor environment. Even in rainy or snowy weather, it will not be affected, thus minimizing the risk of corrosion and damage to the electrical components of the pressureless water supply equipment and effectively extending its service life.

[0030] The outer wall of the isolation cover 2 is provided with several inlet pipe holes 5 that communicate with its internal space. The inlet pipe hole 5 is provided with a matching sealing ring 6. The outer circumferential surface of the inner end of the sealing ring 6 is provided with an inner sealing part 7 that fits against the inner wall of the isolation cover 2. The outer circumferential surface of the outer end of the sealing ring 6 is provided with an outer sealing part 8 that fits against the outer wall of the isolation cover 2. The inlet pipe hole 5 can be used for the pipe 101 on the pressurized water supply unit 1 to extend out to the outside of the isolation cover 2 for connection, or it can be used for external pipes to extend into the isolation cover 2 for connection with the pressurized water supply unit 1. The presence of the sealing ring 6 can effectively ensure the sealing between the outer wall of the pipe and the inner wall of the inlet pipe hole 5, and prevent external soil or other debris from passing through the isolation cover 2 and causing the pressurized water supply unit 1 to be corroded.

[0031] An operating hole 9 is provided on the upper surface of the isolation cover 2, which is connected to the internal space. A ring-shaped mud-proof seat 10 extends upward from the edge of the operating hole 9. The upper end of the mud-proof seat 10 is much higher than the upper surface of the isolation cover 2. Therefore, when burying the isolation cover 2, the presence of the mud-proof seat 10 can effectively prevent soil from falling into the isolation cover 2 through the upper end of the mud-proof seat 10. In the actual burial process, the upper end of the mud-proof seat 10 can be flush with the ground or slightly higher than the ground. It can be adjusted according to actual needs, so as to facilitate the operation of the pressurized water supply unit 1 located inside the isolation cover 2 through the operating hole 9.

[0032] The mudproof seat 10 is covered with a matching isolation sleeve 11. The isolation sleeve 11 is made of rubber, and its upper surface is higher than that of the mudproof seat 10. The isolation sleeve 11 can effectively protect the mudproof seat 10. In actual use, water or other debris can easily accumulate on the ground. The isolation sleeve 11 can effectively prevent water or debris from getting close to the mudproof seat 10, thus preventing water or debris from entering the isolation cover 2 through the upper port of the mudproof seat 10 if the upper surface of the mudproof seat 10 is too low. This further protects the pressurized water supply unit 1 inside the isolation cover 2.

[0033] A fastening sleeve 12 is fitted over the lower end of the isolation sleeve 11. The upper inner wall of the fastening sleeve 12 presses the lower inner wall of the isolation sleeve 11 against the outer wall of the mudproof seat 10. The diameter of the lower inner wall of the fastening sleeve 12 gradually increases from top to bottom. This structural design of the fastening sleeve 12 facilitates the fastening sleeve 12 to be quickly fitted over the isolation sleeve 11 from top to bottom, while ensuring that it can press the lower inner wall of the isolation sleeve 11 tightly against the outer wall of the mudproof seat 10, effectively ensuring the sealing of the lower end of the isolation sleeve 11 and minimizing the penetration of water and debris.

[0034] The fixing structure includes several hidden holes 13 evenly arranged in a circle on the lower outer wall of the isolation cover 2. The lower inner wall of the isolation cover 2 is provided with several through holes 14 that communicate with the hidden holes 13. The diameter of the through holes 14 is smaller than the diameter of the hidden holes 13. The upper surface of the base plate 4 is provided with a ring-shaped fixing part 15, which is embedded in the disassembly port 3. The outer wall of the fixing part 15 is provided with several screw holes that communicate with the through holes 14. A screw 17 passes through the through hole 14 and is screwed into the screw hole 16. The head of the screw 17 is located in the hidden hole 13 and presses against the bottom of the hidden hole 13. This fixing method can not only ensure the stability between the isolation cover 2 and the base plate 4, but also facilitate the disassembly and assembly between the isolation cover 2 and the base plate 4, thereby facilitating the disassembly and assembly of the pressurized water supply unit 1 inside the isolation cover 2.

[0035] The fixing part 15 is covered with a ring-shaped sealing gasket 18. The sealing gasket 18 is made of rubber and is located between the lower surface of the isolation cover 2 and the upper surface of the seat plate 4. The presence of the sealing gasket 18 can effectively ensure the sealing between the lower end face of the isolation cover 2 and the upper surface of the seat plate 4, preventing soil from the ground from seeping into the isolation cover 2 through the gap between the lower end face of the isolation cover 2 and the upper surface of the seat plate 4. The fit between the outer peripheral surface of the fixing part 15 and the inner wall of the disassembly port 3 can form another seal, further preventing soil from the ground from seeping into the isolation cover 2, thus maximizing the protective function of the isolation cover 2.

[0036] The upper surface of the mudproof seat 10 is covered with a cover plate 19 that fits against it. There is a movable gap 20 between the outer wall of the cover plate 19 and the inner wall of the isolation sleeve 11. The lower surface of the cover plate 19 is provided with an annular positioning part 21, which is embedded in the mudproof seat 10. The outer wall of the positioning part 21 fits against the inner wall of the mudproof seat 10. A handle 22 is provided at the center of the upper surface of the cover plate 19. The cover plate 19 can effectively prevent dust and debris from entering the isolation cover 2 through the upper port of the mudproof seat 10. The handle makes it easy to lift and put down the cover plate 19. The positioning part 21 ensures that there is always a movable gap 20 between the outer wall of the cover plate 19 and the inner wall of the isolation sleeve 11, avoiding the situation where the outer wall of the cover plate 19 and the inner wall of the isolation sleeve 11 rub against each other when lifting and putting down the cover plate 19, which would make the lifting and putting down of the cover plate 19 difficult. For ease of use, both the isolation sleeve 11 and the cover plate 19 can be removed for use in actual use, and can be selected according to actual needs.

[0037] The outer wall of the positioning part 21 is provided with an annular sealing groove 23. The sealing groove 23 is provided with a matching auxiliary ring 24. The outer wall of the auxiliary ring 24 is provided with several axially evenly distributed auxiliary parts 25. The upper outer wall of the auxiliary part 25 fits against the inner wall of the mudproof seat 10. The auxiliary ring 24 and the auxiliary part 25 are integrally formed and both are made of rubber. The presence of the auxiliary ring 24 and the auxiliary part 25 can effectively ensure the sealing between the outer wall of the positioning part 21 and the inner wall of the mudproof seat 10. If water or debris enters into the gap between the outer wall of the positioning part 21 and the inner wall of the mudproof seat 10, it will be blocked by the auxiliary ring 24, thereby pressing down the auxiliary ring 24. The auxiliary ring 24 is wider at the top and narrower at the bottom. The upper outer wall of the auxiliary ring 24 will further press tightly against the inner wall of the mudproof seat 10, further improving the sealing between the outer wall of the positioning part 21 and the inner wall of the mudproof seat 10, thereby ensuring the sealing when the cover plate 19 covers the upper port of the mudproof seat 10.

[0038] The lower outer wall of the isolation sleeve 11 is provided with several force application holes 26 that communicate with its internal space. The force application holes 26 are located inside the lower part of the fastening sleeve 12. The presence of the force application holes 26 makes it easier for workers to pull the lower end of the isolation sleeve 11, so that the lower end of the isolation sleeve 11 can deform more quickly and fit over the mudproof seat 10, which is conducive to the installation of the lower end of the isolation sleeve 11.

[0039] The upper and lower outer walls of the isolation cover 2 are provided with several lifting lugs 27 evenly distributed in a circle. The lifting lugs 27 are provided with lifting holes 280. The lifting holes 280 can be used to thread ropes or to do other preparatory work for lifting, so that the crane can lift the isolation cover out of the pit in the ground or put it into the pit in the ground through the lifting rope, effectively improving the efficiency of underground burial.

Claims

1. A buried negative pressure-free water supply device, comprising a pressurized water supply unit, characterized in that: The pressurized water supply unit is covered by an isolation cover; the lower end face of the isolation cover has a disassembly port that communicates with its internal space; the lower end face of the isolation cover has a seat plate that fits against it, and the seat plate covers and seals the disassembly port; the pressurized water supply unit is mounted on the upper surface of the seat plate; the seat plate and the lower end of the isolation cover are fixed together by a fixing structure; the outer wall of the isolation cover has several inlet pipe holes that communicate with its internal space; the inlet pipe holes are equipped with matching sealing rings; the outer circumferential surface of the inner end of the sealing ring is provided with an inner sealing part that fits against the inner wall of the isolation cover; The outer periphery of the sealing ring is provided with an outer sealing part that fits against the outer wall of the isolation cover; the upper surface of the isolation cover is provided with an operating hole that communicates with its internal space; an annular mud-proof seat extends upward from the edge of the operating hole; a matching isolation sleeve is fitted over the mud-proof seat, and the isolation sleeve is made of rubber; the upper end of the isolation sleeve is higher than the upper end of the mud-proof seat; a fastening sleeve is fitted over the lower end of the isolation sleeve; the upper inner wall of the fastening sleeve presses the lower inner wall of the isolation sleeve against the outer wall of the mud-proof seat; the diameter of the lower inner wall of the fastening sleeve gradually increases from top to bottom.

2. The buried negative pressure-free water supply equipment according to claim 1, characterized in that: The fixing structure includes several hidden holes evenly distributed in a circle on the lower outer wall of the isolation cover; the lower inner wall of the isolation cover has several through holes that communicate with the hidden holes, the diameter of which is smaller than the diameter of the hidden holes; the upper surface of the base plate has an annular fixing part that is embedded in the disassembly port; the outer wall of the fixing part has several screw holes that communicate with the through holes; a screw passes through the through hole and is screwed into the screw hole, with the head of the screw located in the hidden hole and pressing against the bottom of the hidden hole.

3. The buried negative pressure-free water supply equipment according to claim 2, characterized in that: The fixing part is fitted with an annular sealing gasket made of rubber; the sealing gasket is located between the lower surface of the isolation cover and the upper surface of the base plate.

4. The buried negative pressure-free water supply equipment according to claim 1, characterized in that: The upper surface of the mud-proof seat is covered with a cover plate that fits therewith; there is a movable gap between the outer wall of the cover plate and the inner wall of the isolation sleeve; the lower surface of the cover plate is provided with an annular positioning part, which is embedded in the mud-proof seat; the outer wall of the positioning part fits against the inner wall of the mud-proof seat; a handle is provided at the center of the upper surface of the cover plate.

5. The buried negative pressure-free water supply equipment according to claim 4, characterized in that: The outer wall of the positioning part is provided with an annular sealing groove; the sealing groove is provided with a matching auxiliary ring; the outer wall of the auxiliary ring is provided with a number of auxiliary parts evenly distributed axially; the auxiliary parts are tubular with a wider top and a narrower bottom, and the outer wall of the upper end of the auxiliary parts fits against the inner wall of the mud-proof seat; the auxiliary ring and the auxiliary parts are integrally formed and are both made of rubber.

6. The buried negative pressure-free water supply equipment according to claim 1, characterized in that: The lower outer wall of the insulating sleeve is provided with several force application holes that communicate with its internal space. The force application holes are located inside the lower part of the fastening sleeve.

7. The buried negative pressure-free water supply equipment according to claim 1, characterized in that: The upper and lower outer walls of the isolation cover are provided with several lifting lugs evenly distributed in a circle; the lifting lugs are provided with lifting holes.

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