Check valve for tank-pump integrated device and tank-pump device

Abstract

The present disclosure relates to a check valve for a tank-pump integrated device, comprising a flange plate (1), a semi-spherical valve body (2), a valve core (3), a rod body (4) and a spring (5); one end of the flange plate (1) is used for connecting with a water pump, and the other end is connected with a small diameter of the semi-spherical valve body (2) in an integrated manner, and a large diameter of the semi-spherical valve body is directed to the inside of a water tank; the small diameter of the semi-spherical valve body (2) extends towards the inside of the water tank and is configured as a sealing port (7), the valve core (3) can cooperate with the sealing port (7) to cut off the flow between the water tank and the water pump; the large diameter of the semi-spherical valve body (2) is internally configured with a valve seat (6), the rod body (4) sequentially passes through the valve seat (6), the spring (5), the valve core (3) and the sealing port (7); the check valve provided by the present disclosure has the advantages of simple structure, convenient installation and easy maintenance of the water pump in the later period.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of secondary water supply, in particular to a check valve for a tank-pump integrated device and a tank-pump device. BACKGROUND

[0002] In today's society, high-rise buildings are more and more, and the application of secondary water supply equipment is also more and more widely, but the underground installation space of some high-rise buildings is limited, and the volume of secondary water supply equipment is relatively large. In order to reduce the floor area of the secondary water supply equipment, the tank-pump integrated device is born.

[0003] Patent No. CN201141139Y discloses an intelligent tank-pump integrated pump station, which integrates the pump house and the water tank into one structure, thereby achieving the purpose of reducing the floor area of the secondary water supply equipment.

[0004] However, the present disclosure relates to a multi-stage impeller type mute flood prevention pump, the pump body itself is relatively long, if the tank-pump structure disclosed in the patent No. CN201141139Y is designed, it will lead to that the water tank occupies too large floor size in the longitudinal direction, which is not conducive to the installation in narrow space, and the end of the silent check valve 9 does not disclose specific technical details and technical effects. The technical personnel in the art cannot realize the design and development of the check valve only through the technical solution disclosed in the authorized text. Therefore, the existing technology still has the problem that the water pump of the tank-pump integrated device is not convenient to repair. Since the water pump of the tank-pump integrated device is placed in the water tank, when a fault occurs, the water in the water tank needs to be emptied before repair, which is very inconvenient. SUMMARY

[0005] The present disclosure provides a check valve for a tank-pump integrated device and a tank-pump device to solve the technical problems of the longitudinal size of the tank-pump integrated pump station being too large and the water pump being difficult to repair in the prior art. The complexity of the check valve at the water pump inlet can be reduced, and the water pump can still be repaired without emptying the water in the water tank and the secondary water supply equipment, thereby ensuring the continuous use of water by the user.

[0006] One of the concepts of the present disclosure is to combine the water inlet with the check valve to simplify the design of the water pump housing and reduce the longitudinal length of the pump body.

[0007] Specifically, the check valve of the present disclosure is composed of a flange plate and a hemispherical valve body. The flange plate is used to connect with the housing of the water pump, and the hemispherical valve body is used to cooperate with the valve core to achieve water stopping.

[0008] Further, the valve core realizes the opening and closing movement through the cooperation between the valve core and the spring.

[0009] Further, the present disclosure simplifies the structure of the check valve through the abutting action of the motor, so that the valve core is in the opening and closing state.

[0010] Specifically, when the motor is installed into the housing, the motor compresses the spring, so that the valve core is separated from the valve body, and the water inlet of the water pump is kept open. If the water pump needs to be repaired, the motor is removed, the spring is decompressed, the valve core is combined with the valve body, and the water in the water tank is prevented from entering the water pump, so that the water pump can be repaired without stopping the water supply.

[0011] Further, another concept of the present disclosure is to embed the water outlet in the pump house, further reducing the overall longitudinal size of the secondary water supply equipment, and facilitating the installation of the secondary water supply equipment in a small space.

[0012] Based on the above concept, the present disclosure provides a check valve for a tank-pump integrated device, comprising a flange plate, a hemispherical valve body, a valve core, a rod body and a spring. One end of the flange plate is connected to the water pump, and the other end is connected to the small diameter of the hemispherical valve body in an integrated manner. The large diameter of the hemispherical valve body faces the inside of the water tank. The small diameter of the hemispherical valve body extends into the water tank and is configured as a sealing port. The valve core can cooperate with the sealing port to cut off the flow of fluid between the water tank and the water pump. The large diameter of the hemispherical valve body is configured with a valve seat. The rod body passes through the valve seat, the spring, the valve core and the sealing port in sequence. When the motor of the water pump is installed, the end of the motor abuts against the end of the rod body away from the hemispherical valve body, so that the spring is compressed, and the rod body drives the valve core to separate from the sealing port. When the motor is removed from the water pump, the spring returns to its original position, and the rod body drives the valve core to cooperate with the sealing port.

[0013] The technical solution provided by the present disclosure ingeniously uses the cooperation between the water pump motor and the check valve spring, so that the check valve can not only serve as the water inlet of the water pump, but also automatically rebound to stop water when the water pump fails, without stopping the secondary water supply equipment and emptying the water tank, so that the faulty water pump can be repaired. The present disclosure has the advantages of simple structure, reliability, and reduced difficulty in repairing the tank-pump integrated device.

[0014] It is worth noting that after the motor of the water pump is removed from the pump body, in addition to the elastic force of the spring, the water in the water tank also exerts pressure on the valve core, so that the valve core cooperates with the sealing port to cut off the flow of fluid between the water tank and the water pump.

[0015] Further, the valve core and the sealing port are preferably conical mating surfaces.

[0016] Based on the above technical solution, the conical surface can also guide the closing of the valve core, avoiding misalignment of the valve core that causes the sealing port to be not completely sealed, causing the water in the water tank to flow into the pump house and causing a repair accident.

[0017] Further, the middle part of the valve core matching surface is provided with an annular groove, the annular groove is used for sleeving a sealing strip, and the sealing between the valve core and the sealing port is completed through the sealing strip.

[0018] Further, the sealing strip is made of elastic material, and after being sleeved into the annular groove, the sealing strip protrudes from the matching conical surface of the valve core in the radial direction.

[0019] The sealing strip made of elastic material guarantees the reliability of the sealing between the valve core and the sealing port.

[0020] Further, the end of the rod body away from the hemispherical valve body is further provided with external threads and a rod seat, the rod seat is used for abutting against the end of the motor, and the external threads can be adjusted along the direction of the rod body.

[0021] In fact, there may be some errors in the size of the motor, and the adjustable rod seat can correct the size error of the battery.

[0022] Meanwhile, for different models of water pumps, the distance between the motor and the end of the pump body is not consistent, and the adjustable rod seat can also be compatible with different models of water pumps, so that the check valve can be mass-produced and adapted to all models of water pumps, thereby reducing the manufacturing cost.

[0023] Further, the rod seat comprises a disc-shaped seat body, a sleeve and a limiting nut, the sleeve and the disc-shaped seat body are configured as an integral structure; the inside of the sleeve is provided with internal threads for matching the external threads of the rod body, so that the disc-shaped seat body can be adjusted back and forth along the axial direction of the rod body; and the nut is used for limiting the adjusted sleeve.

[0024] In actual application, due to the shape and size of the bottom of the motor, the disc-shaped seat body can bear and analyze the pressure, thereby avoiding damage to the threaded structure of the rod body.

[0025] Meanwhile, the limiting nut further comprises a flat gasket and a spring gasket, since the motor applies pressure to the disc-shaped seat body for a long time, the threaded structure may be loose, the position of the sleeve can be limited by the limiting nut, the threaded structure is prevented from being invalid, and thus the water stopping effect of the check valve is affected.

[0026] Further, the valve seat is provided in the shape of a claw, the end of the claw-shaped valve seat is welded to the inner wall of the hemispherical valve body, the middle part of the claw-shaped valve seat is provided with a positioning ring, the positioning ring is used for axial positioning of the rod body, the freedom of the rod body in the direction other than the axial direction is limited through the action of the positioning ring, so that the valve core and the sealing port are kept concentric, and thus the water stopping effect of the valve core is effectively guaranteed.

[0027] Further, the disclosure also provides a tank-pump integrated device comprising the check valve, the check valve being arranged at the water inlet of the water pump, and being used for non-stop maintenance of the water pump.

[0028] Specifically, the check valve of the disclosure is arranged at the end of the water pump of the tank-pump integrated device. In normal operation, the motor keeps the check valve in an open state by pressing the check valve, so as to realize the function of the water inlet. When a water pump of the tank-pump integrated device fails, the motor of the failed water pump can be removed without stopping the operation and emptying the water tank. Since the check valve of the disclosure loses the pressure applied by the motor, the valve core is sealed with the sealing port under the action of the spring and the water pressure in the water tank, so as to cut off the fluid communication between the water tank and the failed water pump. When the maintenance of the water pump is completed, the motor applies pressure to the check valve when it is installed in the pump body, so as to compress the spring, and the rod body drives the valve core away from the sealing port. The water inlet of the water pump is opened, and the water pump after maintenance starts to work normally.

[0029] In summary, the disclosure provides a check valve for a tank-pump integrated device and a tank-pump device, which at least has the following technical effects: 1. The check valve of the disclosure has simple and reliable structure, good sealing performance, and no sealing failure problem; 2. The check valve of the disclosure integrates the water inlet function and the water stop function, which can effectively reduce the longitudinal size of the water pump, and further meet the installation requirements of the secondary water supply device in a narrow space; 3. The length of the rod body of the check valve of the disclosure can be adjusted according to the requirements, which can correct the size error of the motor and adapt to water pump bodies of different specifications and models, so as to have good compatibility and be suitable for mass production. BRIEF DESCRIPTION OF DRAWINGS

[0030] The disclosure will be further described in detail below in combination with the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the disclosure. In addition, unless specifically indicated, the drawings only schematically show the composition or structure of the described objects and can include exaggerated display, and the drawings are not necessarily drawn to scale.

[0031] Fig. 1 The check valve for a tank-pump integrated device provided by the embodiments of the disclosure is shown in the schematic view;

[0032] Fig. 2 The cross-sectional view of the check valve provided by the disclosure is shown in the schematic view;

[0033] Fig. 3 The installation schematic view of the tank-pump integrated device and the check valve provided by the disclosure is shown in the schematic view;

[0034] 1, flange plate; 2, hemispherical valve body; 3, valve core; 4, rod body; 5, spring; 6, valve seat; 7, sealing port; 8, sealing strip; 9, rod seat; 10, disc-shaped seat body; 11, sleeve; 12, limiting nut; 13, positioning ring; A, check valve; B, water pump; C, pump house; D, water tank. DETAILED DESCRIPTION

[0035] The present disclosure will be described in detail below with reference to the accompanying drawings and embodiments. Figs. 1 to 3 A detailed description of the present disclosure will be given.

[0036] In order to make the purpose, technical scheme and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and do not limit the present disclosure.

[0037] The present disclosure provides a check valve for a tank-pump integrated device and a tank-pump device, which has the advantages of simplicity, reliability, convenient installation, and easy maintenance of the water pump without shutdown,

[0038] The check valve of the tank-pump integrated device provided by the present disclosure, as shown in Fig. 1 The check valve includes a flange plate 1, a hemispherical valve body 2, a valve core 3, a rod body 4 and a spring 5. The flange plate 1 is integrally formed with the hemispherical valve body 2 by welding, and the flange plate 1 is sealed by bolt connection with the flange plate at the end of the water pump shell, and the large-diameter open end of the hemispherical valve body 2 is used to face the inside of the water tank.

[0039] See Fig. 2 The cross-sectional view of the check valve is shown in the figure, and the sealing port 7 is extended in the direction of the small-diameter end of the hemispherical valve body 2 towards the inside of the water tank, and the valve core 3 is combined with the sealing port 7 to achieve water stopping in the water pump.

[0040] In fact, the check valve provided by the present disclosure integrates the functions of water inlet and water stopping maintenance, and when the valve core 3 is combined with the sealing port 7, the check valve is equivalent to a water outlet, and the water in the water tank can freely enter the water pump, thereby providing corresponding water pressure; when the valve core 3 is separated from the sealing port 7, the check valve is equivalent to a water stopping device, so that the water in the water tank cannot enter the water pump. Therefore, in the application scenario of the multi-stage centrifugal pump, the check valve can effectively reduce the floor area of the tank-pump integrated device.

[0041] It is worth mentioning that, since the basement space height generally meets the use requirements of the integrated water tank and pump device, the main problem is the narrow longitudinal and transverse dimensions, which leads to the failure of installation of the secondary water supply device. The structure of the check valve is optimized in the present disclosure, which is directly opened in the water tank and acts as a water inlet, thereby shortening the longitudinal dimension of the water pump at the water inlet. This has practical significance for the water pump composed of multiple impellers and motors, which has a relatively long longitudinal dimension.

[0042] Further, as shown in Fig. 2 The valve core 3 is configured as a disc and is integrated with the rod body 4. Meanwhile, the rod body 4 sequentially penetrates through the valve seat 6, the spring 5, the valve core 3 and the flange plate 1, and abuts against the motor end of the water pump. After the motor is installed, the motor end applies pressure to the rod body 4, thereby driving the valve core 3 to compress the spring 5, and further separating the valve core 3 from the sealing port 7, so that the check valve is used as a water inlet during normal operation of the water pump. When the water pump fails, the impeller and the motor in the water pump can be removed without stopping the machine and emptying the water in the water tank. After the motor loses the pressure, the spring 5 pushes the valve core 3 to rebound. Under the action of the water pressure in the water tank, the valve core 3 combines with the sealing port 7, thereby cutting off the fluid channel between the water tank and the water pump, facilitating the non-stop maintenance of the water pump.

[0043] It is worth mentioning that, compared with the conventional check valve arranged at the water outlet of the pump body, the check valve provided by the present disclosure has an opposite fluid cutting direction. The water stop valve at the water outlet is mainly used to prevent fluid backflow when the water pump stops working. During normal operation, the water pressure provided by the water pump is used to open the water stop valve, and external force is needed to open and close the check valve. The present disclosure ingeniously uses the spring force and the water tank pressure to automatically control and adjust, which has the characteristics of simple structure, practical function and easy mass production.

[0044] Preferably, the sealing port 7 can be a separate part, which is welded with the semi-spherical valve body 2 to form an integrated part, or the sealing port 7 is directly integrated with the flange plate 1, thereby reducing the manufacturing difficulty of the check valve.

[0045] Further, the valve core 3 is configured as a circular truncated cone, and the top surface is directed towards the sealing port 7 during installation, thereby playing a guiding role in sealing the valve core 3, avoiding deviation of the sealing alignment, and causing water leakage from the water tank into the water pump, thereby causing difficulty in non-stop maintenance.

[0046] Further, as shown in Fig. 2 An annular groove is formed in the middle of the valve core 3, and the sealing strip 8 is fixed in the annular groove in a sleeved manner, thereby making the sealing structure simple and reliable.

[0047] Further, the sealing strip 8 slightly protrudes from the annular groove, thereby obtaining a better sealing effect.

[0048] In some embodiments, the rod body 4 is further provided with a rod seat 9, as shown in Fig. 2 As shown, the disc-shaped seat body 10 on the rod seat 9 is in contact with the end of the motor, thereby increasing the force receiving area of the rod body 4, so that the motor can better press the rod body 4.

[0049] Further, the disc-shaped seat body 10 is welded with the sleeve 11 as an integral part, which can be adjusted up and down along the direction of the rod body 4 under the action of the sleeve 11, thereby correcting the size error of the motor and adapting to different specifications and models of water pumps, so that the check valve has strong compatibility.

[0050] Further, as shown in Fig. 2 The end of the sleeve 11 away from the disc-shaped seat body 10 is provided with a limiting nut 12, which can prevent the sleeve 11 from being deviated in position during long-term pressure, thereby causing sealing failure of the valve core 3 during multiple maintenance processes.

[0051] Further, as shown in Fig. 1 The valve seat 6 of the present disclosure is configured in a claw shape and is welded and fixed with the inner surface of the semi-spherical valve body 2 through the claw end, the center of the valve seat 6 is provided with a positioning ring 13, thereby realizing the axial positioning of the rod body 4, and further ensuring the coaxiality between the valve core 3 and the sealing port 7.

[0052] Preferably, the claw-shaped structure of the valve seat 6 is a four-claw structure which is inverted into the semi-spherical valve body 2.

[0053] The installation position of the check valve of the present disclosure is shown in Fig. 3 The check valve A is arranged at the end of the water pump B and is connected in a flange plate butt sealing manner, the pump body structure of the water pump B is arranged in the water tank D, and the water outlet is arranged in the pump house C.

[0054] Specifically, after the motor in the water pump B is normally installed, the motor end continuously presses the check valve A, so that the valve core 3 and the sealing port 7 of the check valve A are always in a separated state, thereby the check valve A functions as a water inlet during normal operation, so that the water pump B can normally pressurize water.

[0055] When a water pump B needs to be repaired due to failure, the water pump B and the multi-stage impeller can be removed and repaired in the pump house C. Since the motor is separated from the water pump shell, the spring 5 of the check valve A is no longer pressed, and the spring 5 will rebound, driving the valve core 3 to combine with the sealing port 7, cutting off the fluid communication between the water tank and the water pump. At this time, the check valve plays the role of automatically stopping the water flow. Due to the automatic rebound function of the check valve A, the pump house C can still operate with another water pump under the condition of not stopping, avoiding the problem of interruption of user water supply. At the same time, the repair is very convenient, and it is no longer necessary to empty the water in the water tank D and stop the pump house C to implement the repair function of a single water pump.

[0056] After the repair is completed, the multi-stage impeller and the motor of the water pump B are reset, and the motor will press the rod body 4 of the check valve again, so that the valve core 3 and the sealing port 7 are in a separated state, and then the water pump can work normally.

[0057] Therefore, the check valve provided by the present disclosure has the advantages of simple and reliable structure, convenient operation, and can make the tank-pump integrated equipment can implement repair work on the water pump under the condition of not stopping.

[0058] The above has introduced the present disclosure in detail, and the principle and implementation mode of the present disclosure have been described by applying specific examples. The above description of the embodiments is only used to help understand the present disclosure and the core idea. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present disclosure without departing from the principle of the present disclosure, and these improvements and modifications also fall within the protection scope of the claims of the present disclosure.

Claims

1. A check valve for a tank-pump integrated apparatus, characterized by, The utility model relates to a water pump non-stop maintenance valve, comprising: a flange (1), a semi-spherical valve body (2), a valve core (3), a rod body (4) and a spring (5); one end of the flange (1) is used for connecting with a water pump, and the other end is connected with a small diameter of the semi-spherical valve body (2) integrally, and a large diameter of the semi-spherical valve body faces the inside of a water tank; the small diameter of the semi-spherical valve body (2) extends to the inside of the water tank and is configured as a sealing port (7), the valve core (3) can cooperate with the sealing port (7) to cut off the fluid communication between the water tank and the water pump; the large diameter of the semi-spherical valve body (2) is internally configured with a valve seat (6), and the rod body (4) passes through the valve seat (6), the spring (5), the valve core (3) and the sealing port (7) in sequence; when the motor of the water pump is installed, the end of the motor abuts against one end of the rod body (4) away from the semi-spherical valve body (2), so that the spring (5) is compressed, and thus the rod body (4) drives the valve core (3) to separate from the sealing port (7); when the motor is separated from the water pump, the spring (5) restores, and thus the rod body (4) drives the valve core (3) to cooperate with the sealing port (7).

2. The check valve for a tank-pump integrated apparatus according to claim 1, wherein The valve core (3) and the sealing port (7) are preferably conical cooperation surfaces.

3. The check valve for a tank-pump integrated apparatus according to claim 2, wherein The middle part of the cooperation surface of the valve core (3) is provided with an annular groove, and the annular groove is used for sleeving a sealing strip (8).

4. The check valve for a tank-pump integrated apparatus according to claim 3, wherein The sealing strip (8) is made of elastic material, and after being sleeved into the annular groove, the sealing strip (8) protrudes from the cooperation conical surface of the valve core (3) in the radial direction.

5. The check valve for a tank-pump integrator as defined in claim 1, wherein The end of the rod body (4) away from the semi-spherical valve body (2) is further provided with external threads and a rod seat (9), the rod seat (9) is used for abutting against the end of the motor, and the rod seat (9) can be adjusted along the direction of the rod body (4) through the external threads.

6. The check valve for a tank-pump integrated apparatus according to claim 5, wherein The rod seat (9) comprises a disc-shaped seat body (10), a sleeve (11) and a limiting nut (12), and the sleeve (11) and the disc-shaped seat body (10) are configured as an integral structure; the inside of the sleeve (11) is provided with internal threads, which are used for cooperating with the external threads of the rod body (4), so that the disc-shaped seat body (10) can be adjusted back and forth along the axial direction of the rod body (4); the nut is used for limiting the adjusted sleeve (11).

7. The check valve for a tank-pump integrator as defined in claim 1, wherein The valve seat (6) is provided as a claw shape, the end of the claw shape is welded with the inner wall of the semi-spherical valve body (2), the middle part of the claw shape is provided with a positioning ring (13), and the positioning ring (13) is used for the axial positioning of the rod body (4).

8. A box-pump integrated apparatus characterized by comprising: The utility model relates to a water pump non-stop maintenance valve, comprising: a flange (1), a semi-spherical valve body (2), a valve core (3), a rod body (4) and a spring (5); one end of the flange (1) is used for connecting with a water pump, and the other end is connected with a small diameter of the semi-spherical valve body (2) integrally, and a large diameter of the semi-spherical valve body faces the inside of a water tank; the small diameter of the semi-spherical valve body (2) extends to the inside of the water tank and is configured as a sealing port (7), the valve core (3) can cooperate with the sealing port (7) to cut off the fluid communication between the water tank and the water pump; the large diameter of the semi-spherical valve body (2) is internally configured with a valve seat (6), and the rod body (4) passes through the valve seat (6), the spring (5), the valve core (3) and the sealing port (7) in sequence; when the motor of the water pump is installed, the end of the motor abuts against one end of the rod body (4) away from the semi-spherical valve body (2), so that the spring (5) is compressed, and thus the rod body (4) drives the valve core (3) to separate from the sealing port (7); when the motor is separated from the water pump, the spring (5) restores, and thus the rod body (4) drives the valve core (3) to cooperate with the sealing port (7). The valve core (3) and the sealing port (7) are preferably conical cooperation surfaces. The middle part of the cooperation surface of the valve core (3) is provided with an annular groove, and the annular groove is used for sleeving a sealing strip (8). The sealing strip (8) is made of elastic material, and after being sleeved into the annular groove, the sealing strip (8) protrudes from the cooperation conical surface of the valve core (3) in the radial direction. The end of the rod body (4) away from the semi-spherical valve body (2) is further provided with external threads and a rod seat (9), the rod seat (9) is used for abutting against the end of the motor, and the rod seat (9) can be adjusted along the direction of the rod body (4) through the external threads. The rod seat (9) comprises a disc-shaped seat body (10), a sleeve (11) and a limiting nut (12), and the sleeve (11) and the disc-shaped seat body (10) are configured as an integral structure; the inside of the sleeve (11) is provided with internal threads, which are used for cooperating with the external threads of the rod body (4), so that the disc-shaped seat body (10) can be adjusted back and forth along the axial direction of the rod body (4); the nut is used for limiting the adjusted sleeve (11). The valve seat (6) is provided as a claw shape, the end of the claw shape is welded with the inner wall of the semi-spherical valve body (2), the middle part of the claw shape is provided with a positioning ring (13), and the positioning ring (13) is used for the axial positioning of the rod body (4). The utility model relates to a water pump non-stop maintenance valve, comprising:

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