In-pipe pump and integrated water supply regulation and storage tank

Abstract

The utility model discloses an in-pipe pump and an integrated water supply regulation and storage tank, and the in-pipe pump comprises a cavity which is composed of a water pump pipe, a pump pipe cover installed at the top of the water pump pipe and a self-sealing water pump bottom valve installed at the bottom of the water pump pipe and is used for installing a pump body. The bottom of the pump body is provided with a sealing mechanism used for abutting against and being attached to a water pump pipe or a water pump bottom valve, and the top of the pump body is provided with a pull rod mechanism used for adjusting the vertical position of the pump body so that the pump body can eject the water pump bottom valve open. The floating hinge mechanism is used for making up axial deflection so that the sealing mechanism can be attached and sealed in a self-adaptive mode, and a water outlet is formed in the side wall of the water pump pipe. According to the utility model, the bottom-sealed valve structure is adopted, so that the faulted in-pipe pump can be maintained or replaced when other in-pipe pumps work normally, the whole process does not influence the work of other in-pipe pumps, and the normal water use of a water use area is not influenced; meanwhile, the sealing mechanism is arranged at the bottom of the pump body, and the sealing mechanism can be synchronously taken out and checked when the pump body is taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to the technical field of water supply pumps and pressurized water supply devices, and specifically to a pump-in-a-tube and an integrated water supply regulating tank. Background Art

[0002] Secondary water supply equipment is essential for existing tap water supplies and plays a crucial role in modern urban water supply systems, particularly in high-rise buildings and large complexes. Secondary water supply equipment technology is constantly evolving, increasingly incorporating intelligent and automated control systems. For example, new equipment such as variable frequency pumps and non-negative pressure water supply systems are widely used to improve water supply efficiency and energy conservation.

[0003] Currently, there are a wide variety of secondary water supply equipment on the market, including: Non-negative pressure water supply equipment: This type of water supply equipment is currently the mainstream of water supply equipment, directly connecting to the municipal pipeline network and utilizing the pressure of the municipal pipeline network to reduce the burden on the municipal pipeline network. Variable frequency constant pressure water supply equipment: This type of water supply equipment uses variable frequency control technology to maintain a constant water supply pressure while also achieving energy savings. Tank-type water supply equipment: Commonly used in high-rise buildings, this type of water supply equipment uses water stored in tanks to regulate water supply pressure and flow.

[0004] However, the existing secondary water supply generally uses water tanks or regulating tanks to make up for the difference between peak and low peak water consumption and the water supply of the municipal pipe network. The existing secondary water supply booster pump uses a mounting flange for built-in installation to provide secondary booster water supply. Figure 1 In the existing installation structure shown, the booster water pump is installed on the equipment flange 17. Usually, two booster pumps are installed on one equipment flange 17, one for backup and one for use; a mounting well 16 that matches the equipment flange 17 is provided on the regulating tank / tank, and the equipment flange 17 and the mounting well 16 are fastened together by fasteners such as bolts. Usually, a sealing ring is placed in the middle to achieve a sealing effect. Multiple mounting wells 16 are provided on larger regulating tanks / tanks, so that multiple groups of booster pumps can be installed to supply water to multiple water-using areas at the same time. In actual use, the existing mounting well structure has the following disadvantages or shortcomings:

[0005] The production cost of a regulating tank / tank provided with an installation well is significantly higher, and the installation well and the docking flange need to be welded separately. At the same time, a hole for accommodating the booster pump and threaded holes for installing fasteners need to be opened on the equipment flange. These structures need to be kept airtight to prevent the regulating tank / tank from leaking when it is full of water. Therefore, these structures will greatly increase the cost of the regulating tank / tank in terms of both materials and manufacturing processes. Secondly, when the booster pump fails, the existing structural method of installing the booster pump in the installation well must ensure that the regulating tank / tank is in a non-use state and that there is no water in the regulating tank / tank before the faulty booster pump can be taken out for repair or replacement. During the repair period, water cannot be supplied normally, resulting in a water outage in the water-using area. In order to overcome the shortcomings of the existing secondary booster water supply equipment, the utility model improves the existing regulating tank and booster pump structure, and specially completes the invention. Utility Model Content

[0006] In order to solve the problem in the prior art that water supply needs to be stopped when repairing or replacing a faulty booster pump, resulting in the inability to supply water to the water area normally, the present application provides a pipe pump and an integrated water supply regulating tank, which improves the structure of the pipe pump and the installation method of the regulating tank and the pipe pump, and can solve at least one of the following technical problems:

[0007] 1. Solve the problems of existing regulating storage tanks with installation well structures, such as complex structures, cumbersome welding processes, and high material consumption, which lead to high production costs of regulating storage tanks. In addition, the installation well and the detachable flange structure of the equipment are prone to leaks caused by poor sealing due to aging and rust. The utility model changes the structure of the pump in the pipe, so that the maintenance and replacement of the pump in the pipe no longer depends on the installation well, and the structure of the regulating storage tank is completely omitted, which reduces material investment, simplifies the production process, and avoids the problem of possible leakage due to poor sealing of the installation well.

[0008] 2. Solve the problem of water outage in the existing water supply area caused by the need to stop water supply for repair or replacement of faulty booster pumps. The utility model adopts a resettable self-sealing bottom valve structure, which allows the faulty in-line pump to be repaired or replaced while other in-line pumps are operating normally. The entire process does not affect the operation of other in-line pumps or the normal water supply of the water supply area.

[0009] 3. The utility model installs the pump body in the water pump pipe and adjusts the actual position of the pump body through the pull rod mechanism, so that pump bodies of different models and sizes are compatible without customization, which greatly reduces the cost and difficulty of pump body maintenance.

[0010] 4. The pull rod mechanism can form a detachable closed connection structure between the pump body and the bottom of the water pump pipe or the water pump bottom valve, forming a natural high-pressure chamber in the water pump pipe and a low-pressure chamber connected to the regulating tank at the bottom of the water pump bottom valve.

[0011] 5. Since the water pump bottom valve is installed from the inside to the outside at the bottom or circumferential side wall of the water pump pipe, the pump body and the water pump bottom valve can be directly taken out of the water pump pipe during maintenance. Compared with the existing booster water pump structure, it is simpler and does not require personnel to enter the regulating tank, nor does it need to reserve a maintenance channel structure.

[0012] In order to achieve the above objectives, the technical solutions adopted in this application are:

[0013] A pump-in-pipe comprises a cavity for installing a pump body, which is composed of a water pump pipe, a pump pipe cover installed on the top of the water pump pipe and a self-sealing water pump bottom valve installed at the bottom. The bottom of the pump body has a sealing mechanism for abutting against the water pump pipe or the water pump bottom valve. The top of the pump body is provided with a pull rod mechanism for adjusting the upper and lower positions of the pump body so that the pump body pushes open the water pump bottom valve, and a floating hinge mechanism is provided on the pull rod mechanism or between the pull rod mechanism and the pump body to compensate for axial deflection so that the sealing mechanism can adaptively fit and seal. The side wall of the water pump pipe is provided with a water outlet.

[0014] In order to better solve the coaxial error between the pump body and the pull rod mechanism, which causes the pump body to not fit well on the sleeve seat or the outer shell of the water pump bottom valve, resulting in skewness / uneven circumferential pressure, thereby reducing the reliability of the two surfaces' abutment and sealing, the floating hinge mechanism is a universal ball joint structure or a multi-layer elastic floating mechanism.

[0015] As an optional preference, the multi-layer elastic floating mechanism includes at least two layers of end covers, and the adjacent two layers of end covers are floatingly connected through multiple arrays or evenly or symmetrically distributed connecting members, and any one or at least three connecting members are provided with springs.

[0016] In order to facilitate the adjustment of the pump body position, preferably, the pull rod mechanism includes a pull rod, the upper end of the pull rod is rotatably clamped with an adjustment rod, the adjustment rod is threadedly connected to the pump tube cover and passes through the pump tube cover and is fastened to at least one nut.

[0017] The present invention also provides another pull rod mechanism. Preferably, the pull rod mechanism includes a pull rod, the upper end of which is threaded and hermetically extends through the pump tube cover and is securely connected to at least one nut, and the lower end of the pull rod is rotatably connected to the floating hinge mechanism. The threaded connection structure described above comprises a pull rod threadedly connected to the pump tube cover, and the pull rod extending through the pump tube cover and connecting to the nut. The threaded connection between the pull rod and the pump tube cover serves an adjustment function, while the nut serves a tightening function. That is, after adjustment to the desired position, the nut is used to secure the connection and prevent loosening.

[0018] In order to better solve the problem of anti-backflow, the water pump bottom valve is threadedly connected to the water pump pipe. The water pump bottom valve includes a valve body threadedly connected to the bottom or side wall of the water pump pipe. A valve core support for installing the valve core is fixedly provided at the center of the valve body. A sealing ring for contacting and sealing with the valve core is fixedly installed on the valve body at the outer circumference of the valve core support. A water inlet for water flow is formed between the sealing ring and the valve core. A reset mechanism for pressing the valve core onto the sealing ring is also provided between the valve core and the bottom of the pump body.

[0019] Preferably, the reset mechanism includes a guide rod mounted on the valve core and in contact with the bottom of the pump body, and a reset spring, which is arranged at the bottom of the valve core and applies an upward thrust to the valve core.

[0020] Preferably, a pull rod sleeve is further provided on the pump tube cover, and the pull rod sleeve is slidably and sealedly connected to the pull rod.

[0021] Further preferably, the water pump bottom valve is installed from the inside to the outside on the bottom or circumferential side wall of the water pump pipe. The inside-to-outside installation mentioned here means that the water pump bottom valve is placed on the bottom of the water pump pipe and tightened downward along the axis of the water pump pipe during installation; a bypass branch with a shut-off valve is also provided on the side wall of the water pump pipe for balancing the internal / external pressure of the water pump pipe.

[0022] The present invention also provides an integrated water supply regulating and storage tank, comprising a regulating and storage tank including a water inlet unit connected to a water source or a municipal pipe network, at least one pump-in-pipe as described above installed within the regulating and storage tank, and the regulating and storage tank being fixedly connected to the outer wall of a water pump pipe to form an integrated, sealed structure. Preferably, the regulating and storage tank is connected to the water pump pipe via a bypass branch pipe, and a shut-off valve is provided on the bypass branch pipe.

[0023] Preferably, a welding disk is integrally connected to the outer side wall of the water pump pipe, and the welding disk is fixedly connected to the regulating tank to form a sealing structure.

[0024] Beneficial effects:

[0025] 1. The utility model changes the structure of the pipe pump so that the maintenance and replacement of the pipe pump no longer depends on the installation well, so that the structure of the regulating tank is completely omitted, the material input is reduced, the production process is simplified, and the problem of possible leakage due to loose sealing of the installation well is avoided.

[0026] 2. The utility model adopts a resettable self-sealing bottom valve structure, which allows the faulty pump in the pipe to be repaired or replaced while other pumps in the pipe are working normally. The entire process does not affect the work of other pumps in the pipe and does not affect the normal water use in the water area.

[0027] 3. The utility model installs the pump body in the water pump pipe and adjusts the actual position of the pump body through the pull rod mechanism, so that pump bodies of different models and sizes are compatible without customization, which greatly reduces the cost and difficulty of pump body maintenance.

[0028] 4. The pull rod mechanism can form a detachable closed connection structure between the pump body and the bottom of the water pump pipe or the water pump bottom valve, forming a natural high-pressure chamber in the water pump pipe and a low-pressure chamber connected to the regulating tank at the bottom of the water pump bottom valve.

[0029] 5. Since the water pump bottom valve is installed from the inside to the outside at the bottom or circumferential side wall of the water pump pipe, the pump body and the water pump bottom valve can be directly taken out of the water pump pipe during maintenance. Compared with the existing booster water pump structure, it is simpler and does not require personnel to enter the regulating tank, nor does it require a reserved maintenance channel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0031] Figure 1 It is a schematic diagram of the structure of a regulating storage tank in the prior art.

[0032] Figure 2 This is a schematic diagram of the installation structure of the regulating storage tank and the pump in the pipe of the utility model.

[0033] Figure 3 yes Figure 2 Schematic diagram of the structure in which the pump body of a pump-in-pipe is separated from the water pump pipe.

[0034] Figure 4 This is the front view of the pump-in-tube of the present utility model.

[0035] Figure 5 yes Figure 4 Full section view with the centerline cut symbol AA.

[0036] Figure 6 yes Figure 5 Enlarged view of the structure of area B in the middle.

[0037] Figure 7 yes Figure 5 Enlarged view of the structure of the middle C area.

[0038] Figure 8 It is a partial cross-sectional view of the pump-in-tube of the present utility model.

[0039] Figure 9 yes Figure 8 Enlarged view of the structure of the middle D area.

[0040] Figure 10 yes Figure 5 An enlarged view of another implementation structure in area B.

[0041] Figure 11 yes Figure 2 Enlarged view of the structure of the middle E area.

[0042] In the figure: 1- pump pipe cover; 2- pump pipe flange; 3- water pump pipe; 31- water outlet; 32- welding plate; 4- water pump bottom valve; 5- adjusting rod; 6- pull rod sleeve; 7- pull rod; 71- notch; 8- pump body; 9- return spring; 10- guide rod; 11- valve core; 12- valve body; 121- sealing ring; 122- water inlet; 123- valve core support; 13- connecting piece; 14- end cover; 15- regulating tank; 16- installation well; 17- equipment flange; 18- bypass branch pipe; 19- shut-off valve. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0046] In the description of this application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0047] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not necessarily imply that a component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical" and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0048] It should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0049] Example 1:

[0050] This embodiment provides a pump in a tube. Figure 4-Figure 9 As shown, it includes a cavity for installing a pump body 8 composed of a water pump pipe 3, a pump pipe cover 1 installed on the top of the water pump pipe 3 and a self-sealing water pump bottom valve 4 installed at the bottom, the bottom of the pump body 8 has a sealing mechanism for abutting against the water pump pipe 3 or the water pump bottom valve 4, the top of the pump body 8 is provided with a pull rod mechanism for adjusting the upper and lower positions of the pump body 8 so that the pump body 8 pushes open the water pump bottom valve 4, and a floating hinge mechanism is provided on the pull rod mechanism or between the pull rod mechanism and the pump body 8 to compensate for axial deflection so that the sealing mechanism can adaptively fit and seal, and the side wall of the water pump pipe 3 is provided with a water outlet 31. The sealing mechanism can adopt a variety of structural settings and materials. For example, it is feasible to use a sealing sleeve that is sleeved on the bottom side wall of the pump body 8, and a sealing ring embedded in the bottom of the pump body 8. The material can be soft rubber, silicone rubber or other materials suitable for sealing; a hard material with a hardness lower than that of the pump body 8 and the water pump pipe 3 can also be used. Those skilled in the art can flexibly choose within a reasonable range, and these will not be described in detail again.

[0051] Working principle: Take the existing pipe pump installed in the regulating tank or water tank for water supply as an example. When the pump body 8 is working, water is sucked into the pump body 8 from the water pump bottom valve 4 at the bottom for pressurization, and then the water is sent out from the water outlet 31 to complete the pressurized water supply process. Since a detachable closed connection structure is formed between the pump body 8 and the bottom of the water pump pipe 3 or the water pump bottom valve 4, when the pump body 8 is installed, the pressure in the water pump pipe 3 when the pump body 8 is working is the outlet pressure of the pump body 8, that is, high pressure; the pressure below the water pump bottom valve 4 is the inlet pressure of the pump body 8, that is, low pressure. The low pressure at this time is the same as the internal pressure of the regulating tank. The above water supply process is the same as the conventional booster pump water supply process. The difference is that the pump body 8 is installed in the water pump pipe 3 with a closed structure. When installed and used, the bottom of the pump body 8 contacts the water pump bottom valve 4 and the water pump bottom valve 4 is in a normally open state. Therefore, when the pump body 8 is working, the water in the regulating tank or water tank can naturally flow into the pump body 8 and be pressurized under the driving action of the pump body 8. When the pump body 8 inside the pipe needs to be repaired, it is only necessary to adjust the pull rod mechanism to move the position of the pump body 8 upward so that the pump body 8 no longer contacts the water pump bottom valve 4, thereby causing the water pump bottom valve 4 to automatically return to the initial closed state. At this time, the water in the regulating tank or water tank cannot enter the water pump pipe 3. By removing the water pump cover 1, the faulty pump body 8 can be removed for repair or replacement. At the same time, since the sealing mechanism is installed or embedded in the bottom of the pump body 8, when the pump body 8 is removed, the sealing mechanism will also be removed synchronously, and the sealing mechanism can be checked for aging, damage, and other problems. By simultaneously improving the installation method of the pump body 8 and the sealing mechanism, and cooperating with the water pump pipe 3 and / or the water pump bottom valve 4, the improved overall structure greatly simplifies the maintenance process compared to the maintenance method in the prior art that requires maintenance personnel to enter the regulating tank through a maintenance well for disassembly. Because the water pump bottom valve 4 is open without the pump body 8 abutting, the water in the regulating tank or water tank will continue to exert a positive pressure on the water pump bottom valve 4, further improving the air tightness of the water pump bottom valve 4. During the entire maintenance process, since other pumps in the pipe are not affected and no leakage occurs, there is no need to stop the water supply during maintenance, greatly reducing the inconvenience caused by water outages caused by maintenance equipment. Furthermore, the pull rod mechanism can adjust the position of the pump body 8 in the water pump pipe 3 at will, thereby achieving the purpose of adjusting the opening of the water pump bottom valve 4 by adjusting the abutment force of the pump body 8 against the water pump bottom valve 4.

[0052] The floating hinge mechanism in this embodiment is another technical innovation of the present invention. The floating hinge mechanism, which is a universal ball joint structure or a multi-layer elastic floating mechanism, is primarily used to address axial misalignment between the pull rod mechanism and the pump body 8, allowing the sealing mechanism, which is fixed, sleeved, or embedded in the bottom of the pump body 8, to better abut against the water pump pipe 3 or the water pump bottom valve 4, achieving a self-sealing effect. This eliminates the problem of uneven circumferential force applied to the sealing mechanism due to possible misalignment or poor coaxiality of the pull rod mechanism, which can lead to reduced sealing stability or even seal failure.

[0053] In order to facilitate the fixing and sealing of the pump body 8, please refer to Figure 5 and Figure 9 As shown. Compared to a fixed connection, a floating connection is not a completely rigid structure between the pump body 8 and the tie rod 7. It has a certain radial float, allowing for a certain degree of deflection. The range of this deflection depends on the configuration of the floating structure, with the universal ball joint having the largest floating range. Specifically, in the present invention, the floating range between the pump body 8 and the tie rod 7 is generally sufficient to be controlled within a range of 5°, and generally only about 1° is sufficient. This is intended to overcome the problem of incomplete sealing or even incomplete sealing between the pump body 8 and the water pump pipe 3 due to the tie rod 7 and the pump body 8 not being completely coaxial. This results in incomplete isolation between high and low pressures, and partial backflow of high-pressure water during pressurization of the pump body 8. The implementation of a floating structure allows for adaptive leveling and sealing. The sealing mechanism between the pump body 8 and the water pump bottom valve 4 is preferably sealed with a sealing material embedded in one end of the pump body 8, such as a sealing ring embedded in the bottom of the pump body 8. When the pump body 8 needs to be repaired, the condition of the sealing ring can be inspected by removing the pump body 8, facilitating timely replacement.

[0054] Example 2:

[0055] This embodiment is a specific refinement of the multi-layer elastic floating mechanism based on the embodiment 1. In one embodiment, the multi-layer elastic floating mechanism may include at least two layers of end caps 14, such as two layers, see Figure 5As shown, multiple layers, such as three layers, four layers or more, may also be used, but the two adjacent layers of end covers 14 are floatingly connected by multiple arrays or evenly or symmetrically distributed connectors 13, and any one or at least three connectors 13 are provided with springs. When the pull rod mechanism and the pump body 8 are not in a coaxial position, the angle deviation generated by the two can be compensated or absorbed by a multi-layer elastic floating mechanism, so as to achieve a seal that does not affect the sealing mechanism at the bottom of the pump body 8. Of course, this embodiment only illustrates the preferred solution of the present invention for the multi-layer elastic floating mechanism, and does not represent a limitation on the multi-layer elastic floating mechanism. Without violating the technical principles and concepts disclosed in the present invention, those skilled in the art can still make other reasonable choices based on the technical teachings given by the present invention for compensating for the coaxial error, but it should also be understood that it is within the scope of the floating hinge mechanism of the present invention.

[0056] Example 3:

[0057] This embodiment is based on the above embodiment 1 or 2, and in order to facilitate the adjustment of the position of the pump body 8, a structural improvement scheme is made. Figure 6As shown, the pull rod mechanism includes a pull rod 7, with an adjustment rod 5 rotatably engaged at its upper end. The adjustment rod 5 is threadedly connected to the pump pipe cover 1 and extends through the cover 1, securing it to at least one nut. To adjust the position, simply loosen the nut to allow the adjustment rod 5 to rotate freely. Rotating the adjustment rod 5 changes the relative position between the adjustment rod 5 and the pump pipe cover 1, thereby pushing the lower engaged pull rod 7 downward or pulling the pull rod 7 upward, thereby controlling the position of the pump body 8 secured to the lower end of the pull rod 7. This allows for flexible adjustment of the opening of the water pump bottom valve 4. If the bottom of the pump body 8 does not abut the water pump bottom valve 4, resulting in it being closed, the pump body 8 will not be able to effectively supply water. Another purpose of providing an adjustable pull rod mechanism is to ensure that different pump body 8 models can be effectively installed in the water pump pipe 3, thereby improving the compatibility of the present invention. Pump bodies 8 of different models and lengths can achieve the same technical effect simply by adjusting the position of the pull rod mechanism, significantly improving the compatibility of the present invention. In this embodiment, since the lower end of the pull rod 7 is fixedly or detachably fixedly connected to the pump body 8, the adjusting rod 5 and the pull rod 7 must be rotatable structures, so that when the adjusting rod 5 is rotated, the pull rod 7 and the pump body 8 will not rotate along with it. In this embodiment, the lower end of the adjusting rod 5 has an enlarged structure, and the upper end of the pull rod 7 has a notch for clamping and accommodating the enlarged structure, so as to achieve both the transmission of axial stress and the mutual rotation to realize a rotational connection. Of course, as another preferred embodiment, in order to improve the reliability of axial stress, the bottom of the pump tube cover 1 is also fixedly provided with a pull rod sleeve 6 for accommodating the connection position of the adjusting rod 5 and / or the pull rod 7 to avoid mutual skew. Of course, the pull rod sleeve 6 is not a necessary structure, because the pull rod 7 is fixedly connected to the pump body 8, and the adjusting rod 5 is threadedly connected to the pump tube cover 1, and both have relative stability, but the addition of the pull rod sleeve 6 can further increase the axial stability of the rotational clamping of the two. Another function of the pull rod sleeve 6 is sealing, see Figure for details. Figure 6 and Figure 10 As shown, the pump pipe cover 1 is further provided with a rod sleeve 6, which is slidably and sealedly connected to the rod 7. This structure does not affect the sealing of the upper end of the rod 7 passing through the pump pipe cover 1, and can also meet the axial adjustment of the rod 7.

[0058] Example 4:

[0059] On the basis of Example 1, the utility model also provides another pull rod mechanism, which includes a pull rod 7, the upper end of the pull rod 7 is threaded and sealed to pass through the pump tube cover 1 and is tightly connected to at least one nut, and the lower end of the pull rod 7 is rotatably connected to the floating hinge mechanism. Inspired by the inventive concept of the above-mentioned Example 2, the position of the rotational connection can be changed from between the adjustment rod 5 and the pull rod 7 to between the pull rod 7 and the floating hinge mechanism, and the other structures remain unchanged. Of course, there are many ways to achieve the rotational connection between the pull rod 7 and the floating hinge mechanism, for example, through a bearing connection, through a stepped shaft and a sleeve connection, etc. In this embodiment, the threaded connection structure is that the pull rod 7 is threadedly connected to the pump tube cover 1 and the pull rod 7 passes through the pump tube cover 1 and is connected to the nut. The threaded connection between the pull rod 7 and the pump tube cover 1 plays an adjusting role, and the nut plays a tightening role, that is, after adjusting to the ideal position, the nut is used to tighten it to prevent loosening. As a simple way, the thread sealing method between the pull rod 7 and the pump tube cover 1 only requires applying sealant on the threaded connection position. Of course, other sealing structures can also be set up to achieve this; such as the pull rod sleeve 6 mentioned in the above embodiment is combined with a sealing ring to form a sealing structure with the pull rod 7.

[0060] Example 5:

[0061] On the basis of any of the above embodiments, in order to better solve the problem of self-sealing of the water pump bottom valve 4 and avoid water entering the water pump pipe 3 during maintenance and causing leakage, this embodiment provides a preferred structure of the water pump bottom valve 4, see Figure 5 and Figure 7 As shown, the water pump bottom valve 4 is threadedly connected to the water pump pipe 3. The water pump bottom valve 4 includes a valve body 12 threadedly connected to the bottom or side wall of the water pump pipe 3. A valve core support 123 for mounting the valve core 11 is fixedly provided at the center of the valve body 12. A sealing ring 121 for contacting and sealing with the valve core 11 is fixedly installed on the outer circumference of the valve core support 123 of the valve body 12. A water inlet 122 for water flow is formed between the sealing ring 121 and the valve core 11. A reset mechanism for pressing the valve core 11 onto the sealing ring 121 is also provided between the valve core 11 and the bottom of the pump body 8. Figure 7As shown, in the maintenance state, the reset mechanism presses the valve core 11 against the sealing ring 121, placing the entire water pump bottom valve 4 in a normally closed state. That is, regardless of whether there is water in the regulating tank, or how much water there is, the reset mechanism prevents water from entering the water pump pipe 3. In other words, if there is no pump body 8 in the water pump pipe 3 to push the valve core 11 open, the valve core 11 remains pressed against the sealing ring 121 in a closed state. When water pressure is present in the regulating tank, the water pressure exerts upward pressure on the bottom of the valve core 11, tightening the fit between the valve core 11 and the sealing ring 121 and achieving a better sealing effect. Conversely, in the water supply state, the pump body 8 pushes the valve core 11 downward, forming an annular space / channel between the valve core 11 and the sealing ring 121, allowing water from the water inlet 122 to be introduced into the pump body 8 for pressurized water supply. When installing the water pump bottom valve 4, it is connected to the bottom of the water pump pipe 3 or the side wall near the bottom through threads from the top of the water pump pipe 3 downwards; conversely, when the valve body 12 needs to be disassembled, the valve body 12 is loosened and removed from the top of the water pump pipe 3. That is, the water pump bottom valve 4 is installed on the bottom or circumferential side wall of the water pump pipe 3 from the inside to the outside.

[0062] See also Figure 3 As shown, it is precisely because of the unique design of the valve body 12 in this embodiment that the pump body 8 can be taken out and removed at any time when it is repaired or replaced, and there is no need to stop the water supply for maintenance, which is a significant improvement compared to the existing technology.

[0063] In this embodiment, in order to improve the reliability of the reset mechanism, the reset mechanism includes a guide rod 10 mounted on the valve core 11 and in contact with the bottom of the pump body 8, and a reset spring 9, which is arranged at the bottom of the valve core 11 and applies an upward thrust to the valve core 11. Figure 7 shown.

[0064] In this embodiment, a pump pipe flange 2 for removably and hermetically connecting to the pump pipe cover 1 is fixed or integrally connected to the top of the water pump pipe 3. A welding pad 32 for welding to the regulating tank 15 is fixedly provided on the side wall of the water pump pipe 3. The provision of the welding pad 32 can improve the convenience of welding, reduce the precision requirements for the regulating tank / tank opening, and at the same time, more easily achieve a one-time sealed welding.

[0065] In this embodiment, the water pump bottom valve 4 is installed from the inside out on the bottom or circumferential side wall of the water pump pipe 3. This structural arrangement solves the problem of reducing the difficulty of maintenance. Existing booster pump maintenance generally requires opening the maintenance flange of the regulating tank and removing the entire booster pump mechanism, including the water pump pipe, water pump head and bottom valve structure, etc., while it is installed from the inside out. During disassembly, the water pump bottom valve 4 at the bottom can be directly removed from the water pump pipe 3 with tools for maintenance, avoiding the trouble of personnel entering the tank for maintenance, and also omitting many structures of the regulating tank including the maintenance port. A bypass branch pipe 18 with a shut-off valve 19 for balancing the internal pressure of the water pump pipe 3 is also provided on the side wall of the water pump pipe 3. See Figure 11 As shown, when the pump body 8 needs to be installed, the water pump pipe 3 is empty, the bottom of the water pump bottom valve 4 is subjected to a large pressure, and the water pressure of the regulating tank makes it difficult to open the water pump bottom valve 4. If the water pump bottom valve 4 is forcibly opened using the pull rod 7, it is likely to cause structural damage; using the bypass branch pipe 18 to connect with the inside of the regulating tank, and opening the shut-off valve 19 can form a communicating vessel between the water pump pipe 3 and the inside of the regulating tank 19, eliminating the pressure difference, so that the repaired pump body 8 can be installed very easily.

[0066] Example 6:

[0067] The utility model also provides an integrated water supply and storage tank, see the attached manual Figure 2-Figure 3 As shown, it includes a regulating tank 15, which includes a water inlet unit connected to a water source or a municipal pipe network. At least one of the above-mentioned pipe-in-pipe pumps is installed in the regulating tank 15. The regulating tank 15 is fixedly connected to the outer wall of the water pump pipe 3 to form an integrated closed structure. A welding plate 32 is integrally connected to the outer wall of the water pump pipe 3, and the welding plate 32 is fixedly connected to the regulating tank 15 to form a sealed structure. The regulating tank 15 is connected to the water pump pipe 3 through a bypass branch 18, and a shut-off valve 19 is provided on the bypass branch 18. See Figure 2 and Figure 11 As shown, when the pump body 8 needs to be installed, the water pump pipe 3 is empty, the bottom of the water pump bottom valve 4 is subjected to a large pressure, and the water pressure of the regulating tank makes it difficult to open the water pump bottom valve 4. If the water pump bottom valve 4 is forcibly opened using the pull rod 7, it is likely to cause structural damage; using the bypass branch pipe 18 to connect with the inside of the regulating tank, and opening the shut-off valve 19 can form a communicating vessel between the water pump pipe 3 and the inside of the regulating tank 19, eliminating the pressure difference, so that the repaired pump body 8 can be installed very easily.

[0068] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A pump-in-tube, characterized in that: The invention comprises a cavity for installing a pump body (8) which is composed of a water pump pipe (3), a pump pipe cover (1) respectively installed on the top of the water pump pipe (3) and a self-sealing water pump bottom valve (4) installed on the bottom, wherein the bottom of the pump body (8) has a sealing mechanism for abutting against the water pump pipe (3) or the water pump bottom valve (4), the top of the pump body (8) is provided with a pull rod mechanism for adjusting the upper and lower positions of the pump body (8) so that the pump body (8) pushes open the water pump bottom valve (4), and a floating hinge mechanism is provided on the pull rod mechanism or between the pull rod mechanism and the pump body (8) for compensating for axial deflection so that the sealing mechanism can self-adaptively fit and seal, and the side wall of the water pump pipe (3) is provided with a water outlet (31).

2. The pump-in-tube according to claim 1, characterized in that: The floating hinge mechanism is a universal ball joint structure or a multi-layer elastic floating mechanism.

3. The pump-in-tube according to claim 2, characterized in that: The multi-layer elastic floating mechanism comprises at least two layers of end covers (14), and two adjacent layers of end covers (14) are floatingly connected via a plurality of arrayed or evenly or symmetrically distributed connecting pieces (13), and any one or at least three connecting pieces (13) are sleeved with springs.

4. The pump-in-tube according to claim 1, characterized in that: The pull rod mechanism includes a pull rod (7), the upper end of the pull rod (7) is rotatably clamped with an adjusting rod (5), and the adjusting rod (5) is threadedly connected to the pump tube cover (1) and passes through the pump tube cover (1) to be fastened with at least one nut.

5. The pump-in-tube according to claim 1, characterized in that: The pull rod mechanism comprises a pull rod (7), the upper end of the pull rod (7) is threadedly passed through the pump tube cover (1) and is fastened to at least one nut, and the lower end of the pull rod (7) is rotatably connected to the floating hinge mechanism.

6. The pump-in-tube according to claim 1, characterized in that: The water pump bottom valve (4) The water pump bottom valve (4) is threadedly connected to the water pump pipe (3), and includes a valve body (12) threadedly connected to the bottom or side wall of the water pump pipe (3). A valve core support (123) for mounting a valve core (11) is fixedly provided at the center of the valve body (12). A sealing ring (121) for contacting and sealing with the valve core (11) is fixedly installed on the valve body (12) at the outer circumference of the valve core support (123). A water inlet (122) for water flow to enter is formed between the sealing ring (121) and the valve core (11). A reset mechanism for pressing the valve core (11) onto the sealing ring (121) is also provided between the valve core (11) and the bottom of the pump body (8).

7. The pump-in-tube according to claim 6, characterized in that: The reset mechanism comprises a guide rod (10) mounted on the valve core (11) and in contact with the bottom of the pump body (8), and a reset spring (9) arranged at the bottom of the valve core (11) and applying an upward thrust to the valve core (11).

8. The pump-in-tube according to claim 4 or 5, characterized in that: A pull rod sleeve (6) is also provided on the pump tube cover (1), and the pull rod sleeve (6) is connected to the pull rod (7) in a sliding and sealing manner.

9. An integrated water supply regulating tank, comprising a regulating tank (15), wherein the regulating tank (15) comprises a water inlet unit connected to a water source or a municipal pipe network, characterized in that: At least one pump-in-pipe according to any one of claims 1 to 8 is installed in the regulating tank (15), and the regulating tank (15) is fixedly connected to the outer side wall of the water pump pipe (3) to form an integrated closed structure.

10. The integrated water supply regulating tank according to claim 9, characterized in that: The regulating tank (15) is communicated with the water pump pipe (3) via a bypass branch pipe (18), and a shut-off valve (19) is provided on the bypass branch pipe (18).

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