An immersed booster structure

Abstract

The present invention provides an immersed booster structure, which belongs to the field of secondary water supply technology. By setting a special lifting structure and a pilot structure, it meets the maintenance needs of the immersed booster water pump, and solves the problem in the prior art that the valve cannot be opened due to excessive pressure difference, or the valve life is affected after opening. It has many advantages such as easy installation, easy maintenance, and long valve life.

Description

Technical Field

[0001] The present invention belongs to the technical field of secondary water supply, and in particular relates to an immersed pressurization structure. Background Art

[0002] With the rapid economic and social development of my country and the continuous advancement of urban construction, the demand for land resources in many areas, such as industry, commerce, transportation, and urban development, has increased rapidly. In recent years, my country's urbanization rate has continued to rise, currently reaching 64.7%, and the supply of urban land resources is extremely tight. To conserve land resources, my country has built a large number of high-rise and super-high-rise buildings in urban construction. As we all know, water supply is a vital guarantee for the lives of urban residents. For high-rise and super-high-rise buildings, secondary water supply is currently the only solution. Secondary water supply refers to the storage, pressurization, and then re-distribution of water to users through pipelines by units or individuals.

[0003] In secondary water supply, water supply facilities are directly related to water quality, water pressure and water supply safety, and are directly related to people's quality of life. At present, in order to achieve secondary water supply, a water storage tank water supply pump room is usually equipped. However, in actual use, there are many problems with the water storage tank water supply pump room, such as large footprint, need for regular inspection and cleaning, inconvenient maintenance, easy to cause noise pollution, etc. To this end, the applicant has developed a tube bundle regulator and buried tube bundle water supply system, patent number ZL202210636438.3, which to a certain extent solves the problems of existing secondary water supply tanks such as large footprint, poor water quality, safety hazards, and inconvenient maintenance. The disclosed content is incorporated into this article by reference.

[0004] However, the above-mentioned tube bundle regulator and buried tube bundle water supply system still have certain problems in actual use. For example, when they are disassembled and repaired, it is necessary to stop the submersible pump first, then wait for the water pressure in the pump casing to drop naturally, and then open the pump cover assembly to close the one-way valve. This process requires a long waiting time, which affects the maintenance efficiency; in addition, although the submersible pump is stopped, the water in the tap water network itself has a certain pressure, that is, the water in the pump casing has a certain pressure before the one-way valve is closed. At this time, removing the pump cover drives the push rod to move, and the water in the pump casing is easy to spray out, posing a threat to the safety of the maintenance personnel; in addition, after the maintenance is completed, the submersible pump needs to be lowered and the one-way valve needs to be pushed open by the push rod. At this time, since there is no water pressure in the pump casing and there is pressure in the drainage pipe, the existence of the upper and lower pressure difference makes it difficult to open the one-way valve, and the one-way valve is easily damaged during the opening process.

[0005] Based on this, it is necessary to further improve the existing technology. Summary of the Invention

[0006] In view of the above problems existing in the prior art, the present invention provides an immersed pressurization structure, the purpose of which is to solve at least one of the above problems.

[0007] The present invention adopts the following technical solutions to achieve its purpose:

[0008] Disclosed is an immersed boosting structure suitable for installation in a closed regulating and storing container, comprising a pump casing, a pump body arranged in the pump casing, a pump cover structure arranged at the top end of the pump casing, and a one-way valve structure arranged at the bottom end of the pump casing, wherein the pump cover structure is provided with a lifting structure fixedly connected to the pump body, and the pump body can be driven to rise and fall by adjusting the lifting structure, thereby realizing the opening and closing of the one-way valve structure, and wherein, when the one-way valve structure is opened, the fluid outside the pump casing is allowed to enter the pump casing through the one-way valve structure, and the opening of the one-way valve structure includes two states: pilot opening and full opening performed in sequence.

[0009] As a preferred embodiment, the lifting structure includes a lifting bolt, a guide sleeve and a guide rod, wherein the lifting bolt passes through and is rotatably arranged in the middle of the pump cover structure, the top end of the lifting bolt extends out of the top of the pump cover structure, and a rotation adjustment mechanism is arranged on it, the rod body portion of the lifting bolt located below the pump cover structure is provided with an external thread, the guide rod movably sleeve is arranged outside the rod body portion of the lifting bolt, and is provided with an internal thread matching the external thread, the lower end of the guide rod is fixedly connected to the pump body, the guide sleeve is fixedly arranged at the bottom of the pump cover structure and movably sleeved on the outside of the guide rod, for guiding the guide rod.

[0010] Preferably, the pump cover structure is provided with an exhaust valve connected to the pump casing, and the exhaust valve output line is connected to a pressure gauge and a pressure relief valve. The exhaust valve and other devices have two functions: first, to relieve pressure during maintenance, and second, to confirm the opening of the one-way valve structure when it is piloted open.

[0011] Preferably, the pump body includes a pump, an electric motor or motor for driving the pump, and a short water inlet drainage pipe located below the pump for opening the one-way valve structure, wherein the short water inlet drainage pipe is connected to the water inlet of the pump, wherein the top of the pump body is connected to the lower end of the guide rod through a fixed connecting piece, and a bump block is provided on the short water inlet drainage pipe at the bottom of the pump body through several spaced connecting plates. When the pump body descends, the one-way valve structure is opened by the bump block.

[0012] Furthermore, the one-way valve structure includes a one-way valve connector, a valve seat, a first sealing gasket, a valve, a second sealing gasket, a balancing column, a spring, a base, a sliding sleeve and a spring support frame, wherein the one-way valve connector is fixedly installed on the bottom cover at the bottom of the pump casing, the middle part of the one-way valve connector is fixedly provided with a tubular valve seat, the short water inlet drainage pipe is slidably provided in the tubular valve seat, the lower outer side of the valve seat is fixedly provided with a spring support frame, the spring support frame is a cylindrical structure with multiple vertical openings on the side wall, the bottom end of the spring support frame is fixedly connected to the base, a sliding sleeve is provided above the middle of the base, a balancing column is slidably provided in the sliding sleeve, the balancing column includes a balancing section, a flange section and a sliding section from top to bottom, the sliding section and the sliding sleeve are slidably matched, the flange section is a circular flange surrounding the central axis of the balancing column, the diameter of the circular flange is larger than the outer diameter of the sliding sleeve, and the sliding sleeve is provided with a plurality of vertical openings. The balancing column is provided on the outside of the movable sleeve, and the bottom end of the spring abuts on the base, and the top end of the spring is fixedly connected to the bottom of the circular flange. The balancing section of the balancing column includes a first balancing section and a second balancing section arranged in sequence from top to bottom. The first balancing section is slidably arranged in the balancing hole in the middle of the valve and the upper surface of the first balancing section exceeds the top surface of the valve. The second balancing section is detachably slidably arranged in a balancing groove connected to the balancing hole below the middle of the valve. A pilot hole is provided on the valve outside the balancing hole, and the pilot hole passes through the upper surface of the valve into the balancing groove, so that when the second balancing section is in the balancing groove, the pilot hole is blocked, and when the second balancing section is detached from the balancing groove, the pilot hole is opened; and wherein, under the action of the spring, the balancing column can push the valve upward so that the top surface of the valve abuts against the lower end surface of the valve seat, thereby realizing the one-way closing of the one-way valve structure.

[0013] Compared with the prior art, the present invention has at least the following advantages:

[0014] 1. The lifting structure of the present invention can conveniently realize the opening and closing of the one-way valve structure, thereby facilitating the removal and installation of the pump body. For the situation where the pump is buried below the surface, the submerged boosting structure of the present invention can be used to more conveniently and safely perform equipment maintenance. The present invention can realize the opening and closing of the one-way valve in advance without disassembling the pump. The installation or removal of the pump cover (i.e., the installation and removal of the pump) and the opening or closing of the one-way valve are two independent actions. Before inspecting and disassembling the pump, the one-way valve is first closed, and then the pump cover is removed. In this way, no pressure water overflows when the pump cover is loosened. Similarly, after the pump cover is installed, the one-way valve is opened. In this way, no pressure water is sprayed when the pump is installed, which facilitates the inspection and safe operation of the pump.

[0015] 2. The pilot-operated one-way valve structure, combined with the impact block of the pump body, can achieve pilot opening, solving the problem in the existing technology that the valve cannot be opened due to excessive pressure difference or the valve life is affected after opening;

[0016] 3. The short water inlet drainage pipe is connected to the pump inlet. In this way, the water flows into the pump cavity first, and then flows into other spaces in the immersed booster structure after filling the pump cavity. This ensures that when the water pump starts, it will not suck in air or mix with water, which will affect the life of the pump;

[0017] 4. The setting of sliding plates etc. can reduce the impact of water hammer on the pump and one-way valve structure during emergency or sudden pump stop. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other purposes, features and advantages of the present invention will become more apparent by describing the exemplary embodiments of the present invention in more detail in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments.

[0019] Figure 1 It is a schematic top view of the structure of the immersed supercharging structure of the present invention;

[0020] Figure 2 yes Figure 1 The main cross-sectional structural diagram of the immersed supercharging structure shown in the AA direction;

[0021] Figure 3 yes Figure 2 A partial enlarged view of the immersed booster structure when the one-way valve structure in area I is in a closed state;

[0022] Figure 4 yes Figure 2 A partial enlarged view of the immersed booster structure when the one-way valve structure in area I is in the pilot open state;

[0023] Figure 5 yes Figure 2 A partial enlarged view of the immersed booster structure when the one-way valve structure in area I is in a fully open state;

[0024] Figure 6 1. It is a schematic diagram of a short water inlet drainage pipe used in an embodiment of the immersed boosting structure of the present invention when viewed from above;

[0025] Figure 7 This is a schematic diagram of the main structure of a one-way valve structure used in an immersed boosting structure according to an embodiment of the present invention;

[0026] Figure 8 yes Figure 7 A schematic diagram of a valve used in the one-way valve structure shown in FIG.

[0027] Figure 9 yes Figure 7 A partial cross-sectional schematic diagram of the cooperation between the valve and the spring support frame of the one-way valve structure shown;

[0028] Figure 10 is a schematic diagram of a valve used in an immersed boosting structure according to another embodiment of the present invention, viewed from above;

[0029] Figure 11 10 is a partial cross-sectional schematic diagram of the valve and the spring support frame;

[0030] Figure 12 It is a cross-sectional schematic diagram of another one-way valve structure used in the immersed boosting structure of the present invention;

[0031] Figure 13 yes Figure 12 The schematic diagram of the assembly structure of the one-way valve structure shown;

[0032] Figure 14 This is a schematic structural diagram of a preferred short water inlet drainage pipe used in the immersed boosting structure of the present invention;

[0033] Among them, 1-exhaust valve, 1-1-pressure relief valve, 1-2-pressure gauge, 2-lifting bolt, 3-cable sealing joint, 4-guide sleeve, 5-guide rod, 6-fixed connector, 7-motor, 8-pump casing, 9-pump outlet, 10-pump, 11-water inlet short drainage pipe, 111-connecting plate, 12-check valve connector, 13-impact block, 14-valve seat, 15-first sealing gasket, 16-valve, 161-balancing hole, 162-guide ear, 17-second sealing gasket, 18-balancing column, 19-spring, 20-base, 21-sliding sleeve, 22-pilot hole, 23-spring support frame, 24-opening, 25-water outlet pipe; 26-valve body mounting connector, 27-one-way valve seat, 28-diversion channel, 29-pilot channel, 30-ball, 31-valve core, 32-outer spring, 33-inner spring, 34-hollow wire plug, 35-bottom plate, 36-strike rod, 37-pump bottom water suction end cover, 38-third sealing gasket, 39-sliding plate, 391-first water hole, 40-water cone, 401-second water hole. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0035] Example 1

[0036] like Figures 1 to 11As shown, the present invention provides an immersed boosting structure suitable for installation in a regulating and storing container. The regulating and storing container is a closed structure, preferably an underground setting, such as an underground regulating and storing pipe, regulating and storing pool, regulating and storing well, regulating and storing water tank, etc., which includes a pump casing 8, a pump body arranged in the pump casing 8, a pump cover structure arranged at the top of the pump casing 8, and a one-way valve structure arranged at the bottom of the pump casing 8. The pump cover structure is provided with a lifting structure fixedly connected to the pump body. By adjusting the lifting structure, the pump body can be lifted and lowered, thereby realizing the opening and closing of the one-way valve structure. When the one-way valve structure is opened, the fluid outside the pump casing 8 is allowed to enter the pump casing 8 through the one-way valve structure. The opening of the one-way valve structure includes two states: pilot opening and full opening. The provision of two opening states overcomes the problem that the one-way valve structure cannot be opened under a large pressure difference.

[0037] As a preferred embodiment, the lifting structure includes a lifting bolt 2, a guide sleeve 4 and a guide rod 5, wherein the lifting bolt 2 passes through and is rotatably arranged in the middle of the pump cover structure, and the top end of the lifting bolt 2 extends out of the top of the pump cover structure, and is provided with a rotation adjustment mechanism, such as a rotating gear, an adjustment handle, a hexagonal structure for convenient use of a hexagonal wrench, etc. The rod body portion of the lifting bolt 2 located below the pump cover structure is provided with an external thread, and the guide rod 5 is movably sleeved outside the rod body portion of the lifting bolt 2, and is provided with an internal thread matching the external thread. The lower end of the guide rod 5 is fixedly connected to the pump body, and the guide sleeve 4 is fixedly provided at the bottom of the pump cover structure and movably sleeved outside the guide rod 5 for guiding the guide rod 5. The present invention adopts a lifting bolt 2 for lifting and adjusting, which can achieve precise lifting in the vertical direction. The top of the lifting bolt 2 extends out of the pump cover structure, and when it is closed, the lifting of the pump body in the pump casing 8 can be achieved, thereby achieving the opening and closing adjustment of the one-way valve structure. In this way, when maintenance is required, the pump is stopped first, and then the one-way valve structure can be directly closed, and then the pressure is released, so there is no need to wait for the natural drop of the water pressure in the pump casing 8. It should be noted that the pump cover structure is provided with an exhaust valve 1 connected to the pump casing 8, and the output pipeline of the exhaust valve 1 is connected to a pressure gauge 1-2 and a pressure relief valve 1-1. Therefore, after closing the one-way valve structure by the lifting bolt 2, the pressure relief valve 1-1 can be directly opened to release the pressure, and the pressure situation in the pump casing 8 can be observed by the pressure gauge 1-2. After the pressure release is completed, the pump cover structure is disassembled and opened, and then the pump body is taken out for maintenance. It should be further explained that a water outlet pipe 25 is also provided on the side wall of the pump casing 8. This pipe is used to supply water to the user and also to relieve pressure during maintenance. After pressure relief is completed, the liquid level in the pump casing 8 is lowered to below the pump cover structure, preventing water from spraying out when the pump cover structure is removed. Furthermore, a cable gland 3 is provided on the pump cover structure for the passage of the cables or hydraulic lines that drive the pump body.

[0038] Preferably, the pump body includes a pump 10, an electric motor 7 or a motor for driving the pump 10, and a short water inlet drainage pipe 11 located below the pump 10 for opening a one-way valve structure. The short water inlet drainage pipe 11 is connected to the water inlet of the pump 10 (so that the life of the pump will not be affected by air suction or mixing of air into the water when the water pump is started). The top of the pump body is connected to the lower end of the guide rod 5 by a fixed connecting member 6 (such as a stud bolt), and a collision block 13 is provided on the short water inlet drainage pipe 11 at the bottom of the pump body through a plurality of spaced connecting plates 111 (see Figure 6 ), when the pump body descends, the one-way valve structure is opened by the impact block 13. Preferably, the pump 10 can be an electric submersible pump such as a medium-inlet submersible electric pump, a diaphragm pump, a screw pump, and the like.

[0039] Further, such as Figure 3 As shown, the one-way valve structure in this embodiment includes a one-way valve connector 12, a valve seat 14, a first sealing gasket 15, a valve 16, a second sealing gasket 17, a balancing column 18, a spring 19, a base 20, a sliding sleeve 21 and a spring support frame 23, wherein the one-way valve connector 12 is fixedly mounted on the bottom cover at the bottom of the pump casing 8, a tubular valve seat 14 is fixedly provided in the middle of the one-way valve connector 12, a short water inlet drainage pipe 11 is slidably provided in the tubular valve seat 14, a spring support frame 23 is fixedly provided on the outer side of the lower part of the valve seat 14, and a spring support frame 23 is fixedly provided on the outer side of the lower part of the valve seat 14. The spring support frame 23 is a cylindrical structure with a plurality of vertical openings 24 on the side wall. The bottom end of the spring support frame 23 is fixedly connected to the base 20. A sliding sleeve 21 is provided above the middle of the base 20. A balancing column 18 is slidingly provided in the sliding sleeve 21. The balancing column 18 includes a balancing section, a flange section and a sliding section from top to bottom. The sliding section slides with the sliding sleeve 21. The flange section is a circular flange around the central axis of the balancing column 18. The diameter of the circular flange is larger than the outer diameter of the sliding sleeve 21. A spring 19 is provided outside the sliding sleeve 21. The spring 19 is provided on the outside of the sliding sleeve 21. The bottom end of 9 abuts against the base 20, the top end of the spring 19 is fixedly connected to the bottom of the circular flange, and the balancing section of the balancing column 18 includes a first balancing section and a second balancing section arranged in sequence from top to bottom. The first balancing section is slidably arranged in the balancing hole 161 in the middle of the valve 16 and the upper surface of the first balancing section exceeds the top surface of the valve 16 (so that during the opening process of the one-way valve structure, the collision block 13 first acts on the balancing column 18 to ensure that the pilot hole 22 is opened first), and the second balancing section is detachably arranged in the middle of the valve 16. In the balancing groove below that is connected to the balancing hole 161, a pilot hole 22 is provided on the valve 16 outside the balancing hole 161. The pilot hole 22 extends from the upper surface of the valve 16 to the balancing groove, so that when the second balancing section is in the balancing groove, the pilot hole 22 is blocked, and when the second balancing section is separated from the balancing groove, the pilot hole 22 is opened; and wherein, under the action of the spring 19, the balancing column 18 can push the valve 16 to move upward, so that the top surface of the valve 16 abuts against the lower end surface of the valve seat 14, thereby realizing the one-way closing of the one-way valve structure.

[0040] Furthermore, a second sealing gasket 17 is provided on the upper surface of the circular flange of the balancing column 18 at the outer edge of the second balancing section. When the second balancing section of the balancing column 18 is located in the balancing groove at the bottom of the valve 16, the pilot hole 22 is sealed by the second sealing gasket 17.

[0041] Figures 7 to 9 The main structure of a preferred one-way valve structure of the present invention is shown by way of example, wherein the valve 16 is a circular structure as a whole, and a first sealing gasket 15 is provided in a ring-shaped distribution on the outer edge of the top surface of the valve 16. When the top surface of the valve 16 abuts against the lower end surface of the valve seat 14, the one-way closing of the one-way valve structure is achieved by the first sealing gasket 15.

[0042] Figures 10 and 11 Shows another preferred main structure of the one-way valve structure of the present invention (with Figures 7 to 9 comparison), in Figures 7 to 9 In addition to the illustrated valve 16, the valve 16 has a plurality of guide ears 162 spaced apart circumferentially. After the one-way valve structure is installed, the guide ears 162 are positioned within the plurality of vertical openings 24 provided on the sidewalls of the spring support frame 23. This allows the valve 16 to slide only vertically and not rotate. Preferably, at least two of the circumferentially distributed guide ears 162 have different circumferential dimensions. This arrangement is intended to reduce deviation caused by circumferential oscillation. If all the guide ears 162 were of the same size, they would tend to oscillate in the same direction during oscillation, resulting in significant deviation and potentially affecting the valve's lifespan. However, a non-uniform arrangement of different sizes provides a better limiting effect, mitigating this effect to a certain extent.

[0043] like Figures 1 to 5 As shown, the one-way valve structure of the immersed booster structure of this embodiment is initially in a closed state (see Figure 3 ), at this time, the top surface of the valve 16 abuts against the lower end surface of the valve seat 14, and the valve 16 realizes the sealing of the one-way valve structure through the first sealing gasket 15, while the collision block 13 does not apply force to the balance column 18 (there may be a certain gap between the two); when the one-way valve structure needs to be opened, the guide rod 5 is moved downward in the vertical direction by rotating the lifting bolt 2. During the downward movement, the bottom surface of the collision block 13 first applies force to the balance column 18. According to the pressure formula F=P*S (F is pressure, N; P is pressure, Pa; S is force area, m 2), under the same pressure, the smaller the force-bearing area, the greater the corresponding pressure. Because the cross-sectional area of the balancing column 18 is much smaller than that of the valve 16, when the pressure differential above and below the valve 16 is constant (i.e., P is constant), the pressure F exerted on the balancing column 18 is smaller than the force exerted directly on the valve 16 to open the one-way valve structure. Therefore, the pilot hole 22 can be easily opened by rotating the lifting bolt 2. During the process of rotating the lifting bolt 2 to lower the pump body, the exhaust valve 1 provided on the pump cover structure can be opened. As the pump body descends, the operating condition can be confirmed by exhausting the exhaust valve 1 (if the pilot hole is open, exhaust will be intensified) and by monitoring the pressure change within the pump casing 8. If the pilot hole is confirmed to be open (i.e., the pilot hole is open), the lifting bolt 2 is stopped. When water begins to flow out of the exhaust valve 1, the exhaust valve 1 is closed. Then, when the pressure within the pump casing 8 no longer increases, the lifting bolt 2 is continued to rotate, pushing the balancing column 18 and valve 16 downward via the impact block 13, fully opening the one-way valve structure. Due to the use of a pilot-operated setting, the one-way valve structure is easier to open, and this opening method will not damage the valve, thereby increasing the service life of the one-way valve structure. When the pump body needs to be repaired, the pump body is moved upward by rotating the lifting bolt 2 in the opposite direction. When the collision block 13 on the short water inlet drainage pipe 11 of the pump body is disengaged from the balance column 18, the valve 16 is restored under the action of the spring 19. The top surface of the valve 16 abuts against the lower end surface of the valve seat 14. The balance column 18 also seals the pilot hole 22 through the second sealing gasket 17. At this time, the pressure can be released through the pressure relief valve 1-1, and the pump cover can be removed.

[0044] Example 2

[0045] This embodiment only describes the parts that are different from the first embodiment, specifically: Figure 12As shown, this embodiment provides another alternative one-way valve structure, which includes a valve body mounting connector 26, a one-way valve seat 27, a guide channel 28, a pilot channel 29, a ball 30, a valve core 31, an outer spring 32, an inner spring 33, a hollow wire plug 34 and a bottom plate 35, wherein the valve body mounting connector 26 is mounted on the bottom cover at the bottom of the pump sleeve 8 shown in the first embodiment or is directly sealed and connected to the bottom end of the pump sleeve 8, a one-way valve seat 27 is installed below the middle of the valve body mounting connector 26, the one-way valve seat 27 is a cylindrical structure, the top of which is a top plate with a guide channel 28, and the middle of the valve body mounting connector 26 has a connecting hole, the diameter of the connecting hole is larger than the diameter of the guide channel The diameter of the channel 28 is large (to facilitate the passage of the collision block 13). The bottom of the one-way valve seat 27 is connected to a bottom plate 35. The middle of the bottom plate 35 has a sliding hole. The bottom plate 35 is provided with at least one fluid inlet around the sliding hole. A valve core 31 is slidingly provided in the sliding hole. The middle of the valve core 31 has a pilot channel 29. The pilot channel 29 is connected to the bottom of the bottom plate 35. The inside of the pilot channel 29 is provided with a hollow wire plug 34, an inner spring 33 and a ball 30 from bottom to top. One end of the spring 33 abuts against the top of the hollow wire plug 34, and the other end abuts against the ball 30. A ball seat that cooperates with the ball 30 is located above the ball 30 in the pilot channel 29 (the size of the pilot channel 29 becomes smaller here). Initially, under the action of the inner spring 33, the ball 30 is pushed toward the ball seat and blocks the pilot channel 29. The valve core 31 includes a valve stem and a valve plate located at the top of the valve stem. The valve stem is slidably arranged in the sliding hole. The outer side of the valve stem is sleeved with an outer spring 32. The outer spring 32 The top end of the outer spring 32 abuts against the bottom of the valve plate, and the bottom end of the outer spring 32 abuts against the bottom plate 35. Initially, under the force of the outer spring 32, the valve plate of the valve core 31 abuts against the bottom of the top plate with the guide channel 28 of the one-way valve seat 27 through its top surface to block the guide channel 28. In order to realize the pilot opening of the one-way valve structure of this embodiment, this embodiment is based on the embodiment 1 and is provided with a downward striker (not shown in the figure, refer to Figure 13 The striker 36 is provided so that when the striker 13 moves downward to open the one-way valve structure, the striker first passes through the guide channel 28 and enters the pilot channel 29, pushing the ball 30 downward to open the pilot channel 29. When the pressure in the pump casing 8 meets the conditions for fully opening the one-way valve structure (see Example 1), the striker 13 is further moved downward, so that the bottom surface of the striker 13 acts on the top surface of the valve plate of the valve core 31 and pushes the valve core 31 downward to open the guide channel 28. Compared with Example 1, the one-way valve structure of this embodiment is simpler and easier to assemble.

[0046] As a preferred embodiment, Figure 13 FIG. 1 shows a method for installing a striker structure for opening the one-way valve structure of this embodiment, wherein the striker 36 is directly mounted on the pump bottom water suction end cover 37 of the pump 10, as shown in FIG. Figure 13As shown, the striker 36 includes at least a large diameter section located at the top and a small diameter section located at the bottom. When the pump body moves downward, the small diameter section of the striker 36 extends into the pilot channel 29 to push the ball 30 downward, thereby opening the pilot channel (29). When the pump body continues to move downward, the large diameter section of the striker 36 pushes the valve core 31 downward, thereby fully opening the one-way valve structure. Furthermore, the valve body mounting connector 26 is directly connected to the bottom end of the pump casing 8. At this time, a third sealing gasket 38 is provided on the valve body mounting connector 26 in the pump casing 8, so that when the pump body moves downward to open the one-way valve structure, the pump bottom water suction end cover 37 of the pump 10 is pressed against the third sealing gasket 38, thereby achieving a seal between the pump casing 8 and the bottom one-way valve structure.

[0047] Example 3

[0048] This embodiment only describes the differences from the first embodiment. Specifically, in this embodiment, at least two spaced-apart baffles (not shown) are installed in the short inlet drainage tube 11 near the water inlet of the pump 10. Each baffle has a fluid passageway, and the fluid passageways between the baffles are staggered. This arrangement prevents the fluid in the pilot hole 22 from being ejected directly into the pump 10 and affecting its performance.

[0049] As a further preferred embodiment, see Figure 2 and Figure 14 The water inlet short drainage pipe 11 is provided with a sliding plate 39 and a water passing cone 40 in order from top to bottom at the water inlet position near the pump 10, wherein the sliding plate 39 is provided with a first water passing hole 391, and the water passing cone 40 is provided with a second water passing hole 401 (preferably provided at Figure 10As shown in the middle part of the figure, the first water hole 391 and the second water hole 401 are staggered with each other. In addition, a plurality of vertical sliding grooves are provided on the inner wall of the short water inlet drainage pipe 11. The sliding plate 39 can slide in the vertical direction along the sliding grooves. When the sliding plate 39 slides to the bottom of the sliding grooves, the sliding plate 39 can block the second water hole 401, thereby blocking the water inlet of the pump 10. Preferably, the water flow area of the second water hole 401 is smaller than the water flow area of the first water hole 391, in order to slow down the fluid and reduce the impact of the fluid on the pump 10. Through the above arrangement, the impact of the water flow on the pump and the one-way valve structure or other components during emergency or sudden pump stop can be reduced. Under normal circumstances, under the pressure difference between the suction force of the upper pump 10 and the pressure of the pressurized water from the regulating and storage container below, the sliding plate 39 is pushed up, and the fluid flows from the one-way valve to the pump body; when a sudden power outage causes the pump 10 to stop suddenly, since the fluid above the pump outlet 9 is the fluid after secondary pressurization, the pressure is higher, it will flow back along the pump outlet 9, forming a water hammer phenomenon. By setting the sliding plate 39 and the water-passing cone 40, on the one hand, during normal operation, the fluid in the pilot hole 22 can be prevented from being directly ejected into the inner cavity of the pump 10. At the same time, the curved fluid path can slow down the fluid flow rate. On the other hand, when water hammer occurs, the sliding plate 39 can be moved down to block the second water-passing hole 401 to form a blockage. In this way, the water hammer will not act on the one-way valve structure. Due to this blockage, the backflow of fluid is limited, and the impact on the pump 10 is very small, thereby reducing the risk of repairing the entire immersed boosting structure.

[0050] The above description is merely an exemplary embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. An immersion boosting structure, comprising a pump casing (8), a pump body arranged in the pump casing (8), a pump cover structure arranged at the top end of the pump casing (8) and a one-way valve structure arranged at the bottom end of the pump casing (8), characterized in that: The pump cover structure is provided with a lifting structure fixedly connected to the pump body. By adjusting the lifting structure, the pump body can be driven to rise and fall, thereby realizing the opening and closing of the one-way valve structure. When the one-way valve structure is opened, the fluid outside the pump casing (8) is allowed to enter the pump casing (8) through the one-way valve structure. The opening of the one-way valve structure includes two states: pilot opening and full opening. The one-way valve structure comprises a valve (16), a pilot hole (22) and a balancing hole (161) are provided on the valve (16), a balancing column (18) is slidably provided in the balancing hole (161), the pump body comprises a pump (10), a short water inlet drainage pipe (11), the short water inlet drainage pipe (11) is communicated with the water inlet of the pump (10), and a collision block (13) is provided on the short water inlet drainage pipe (11); the balancing column (18) comprises a balancing section, a flange section and a sliding section in order from top to bottom, the balancing section comprises a first balancing section and a second balancing section, the first balancing section and the second balancing section in order from top to bottom, A balancing section is slidably arranged in a balancing hole (161) in the middle of the valve (16), and the upper surface of the first balancing section exceeds the top surface of the valve (16). The second balancing section is detachably slidably arranged in a balancing groove connected to the balancing hole (161) below the middle of the valve (16), so that when the pump body moves downward, the collision block (13) first squeezes the balancing column (18) to open the pilot hole (22), thereby realizing the pilot opening of the one-way valve structure, and after continuing to move downward, it squeezes the balancing column (18) and the valve (16) at the same time, thereby realizing the full opening of the one-way valve structure.

2. The immersed pressurized structure according to claim 1, characterized in that: The lifting structure comprises a lifting bolt (2), a guide sleeve (4) and a guide rod (5), wherein the lifting bolt (2) passes through and is rotatably arranged in the middle of the pump cover structure, the top end of the lifting bolt (2) extends out of the top of the pump cover structure, and a rotation adjustment mechanism is arranged on it, and the rod body portion of the lifting bolt (2) located below the pump cover structure is provided with an external thread, the guide rod (5) is movably sleeved outside the rod body portion of the lifting bolt (2), the lower end of the guide rod (5) is fixedly connected to the pump body, and the guide sleeve (4) is fixedly arranged at the bottom of the pump cover structure and movably sleeved outside the guide rod (5) for guiding the guide rod (5).

3. The immersed pressurized structure according to claim 1, characterized in that: The pump cover structure is provided with an exhaust valve (1) connected to the pump casing (8), a pressure gauge (1-2) and a pressure relief valve (1-1).

4. The immersed pressurized structure according to claim 1, characterized in that: The pump body also includes an electric motor (7) or a motor for driving the pump (10) to work. The top of the pump body is connected to the lower end of the guide rod (5) through a fixed connection member (6). When the pump body descends, the one-way valve structure is opened by the impact block (13).

5. The immersed pressurized structure according to claim 1, characterized in that: A second sealing gasket (17) is provided on the upper surface of the flange section of the balancing column (18). When the second balancing section of the balancing column (18) is located in the balancing groove at the bottom of the valve (16), the pilot hole (22) is blocked by the second sealing gasket (17).

6. The immersed pressurization structure according to claim 1, characterized in that: A first sealing gasket (15) is provided on the top surface of the valve (16). When the top surface of the valve (15) abuts against the lower end surface of the valve seat (14) of the one-way valve structure, one-way closing of the one-way valve structure is achieved through the first sealing gasket (15).

7. The immersed pressurized structure according to claim 1, characterized in that: At least two partitions spaced apart from each other are provided in the water inlet short drainage pipe (11) at a position close to the water inlet of the pump (10), each partition being provided with a fluid channel, and the fluid channels between the partitions are staggered.

8. The immersed pressurization structure according to any one of claims 1 to 3, characterized in that: The one-way valve structure includes a one-way valve seat (27), the top of the one-way valve seat (27) is a top plate with a guide channel (28), the bottom of the one-way valve seat (27) is connected to a bottom plate (35), the middle of the bottom plate (35) has a sliding hole, the bottom plate (35) is provided with at least one fluid inlet around the sliding hole, a valve core (31) is slidably provided in the sliding hole, the middle of the valve core (31) has a pilot channel (29), the pilot channel (29) is connected to the bottom of the bottom plate (35), and the inside of the pilot channel (29) is provided with hollow wire plugs (34), An inner spring (33) and a sphere (30), one end of the inner spring (33) abuts against the top of the hollow wire plug (34), and the other end abuts against the sphere (30), a ball seat is provided above the sphere (30) in the pilot channel (29), and a downward impact rod is provided in the middle of the bottom surface of the impact block (13); the valve core (31) includes a valve stem and a valve plate located at the top of the valve stem, the valve stem is slidably arranged in the sliding hole, the outer side of the valve stem is sleeved with an outer spring (32), the top end of the outer spring (32) abuts against the bottom of the valve plate, and the bottom end of the outer spring (32) abuts against the bottom plate (35).

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