Internal pressure balancing device of water pump

Abstract

The utility model relates to a water pump internal pressure balancing device which comprises a water pump body, a pump body base arranged on one side of the water pump body and a water outlet valve body arranged on the other side of the pump body, a water pumping assembly is arranged in the water pump body, and the water pumping assembly is used for pumping water in the pump body base into the water outlet valve body. The interior of the water inlet of the pump body base is in sealed connection with a one-way valve assembly, the one-way valve assembly is used for preventing water in the pump body base from flowing back to the exterior of the water inlet, a plurality of pressure relief holes are formed in the surface of the one-way valve assembly, a pressure relief assembly is arranged in each pressure relief hole, and the pressure relief assemblies do not allow the water in the pump body base to flow back to the exterior of the water inlet; according to the one-way valve assembly, every time when pressure in the pump body base changes and water flows into the one-way valve shell from the interior of the pump body base, the one-way valve assembly achieves the function that the water cannot flow back, the stability of equipment in the working process is improved, and convenience is brought to use.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, and particularly relates to an internal pressure balancing device for a water pump. Background Art

[0002] Water pumps are in a field with a high market sales rate among electromechanical products. Pumps are essential in various industries and fields, including rural households without tap water. Most common industrial water pumps are of the volute type and horizontal machine base. In the prior art, before pumping water, the pump casing needs to be filled with water to evacuate the air inside the pump casing. Then, when the impeller of the water pump rotates, it drives the liquid to generate centrifugal force, creating negative pressure at the water inlet of the pump to suck in the liquid and positive pressure at the water outlet of the pump to discharge the liquid.

[0003] The application publication number is CN109838388A, which discloses a multifunctional amphibious silent pump. Combining its specification and drawings, its solution is to set a fan outside the water circulation cooling device. By using the automatic cooling of the water circulation cooling device and the forced cooling of the fan, the heat dissipation efficiency of the water pump during operation is improved, which can effectively cool down and avoid the occurrence of the motor burning out due to high temperature, thus improving the service life of the water pump and the motor, as well as the reliability of the equipment operation. However, when the pump body is working, when there is no water outside the water inlet and there is still water inside the positioning seat, there is a probability that the water inside the positioning seat will flow back. Moreover, if there are multiple water outlets and the pressure of a single water outlet changes, the pressure inside the water pump body will also change. At this time, the pressure cannot be effectively discharged, resulting in the pressure of other water outlets fluctuating greatly, which brings inconvenience during use. Summary of the Invention

[0004] The utility model mainly aims at the problems existing when the above-mentioned water pump is working, and invents an internal pressure balancing device for a water pump. Whenever the pressure inside the pump body base changes and water flows from the inside of the pump body base into the inside of the one-way valve housing, the water impacts the left side of the sealing circular plate. Under the guiding action of the pulling force generated by the first metal spring, the silica gel ring on the sealing circular plate will gradually fit with the left end of the one-way valve housing, realizing the function of preventing water from flowing back; when one of the water outlet channels is closed and water is discharged, the steel ball slides to the right. During the sliding process, the second metal spring is compressed and deformed, and the pressure can be discharged through the exhaust hole, realizing the pressure relief function; when the first screw rotates, the screw support block will move left and right until the screw support block can clamp the outer surface of the water pumping support housing. The two ends of the driving motor are respectively fixed at the top inside the water pump body and the bottom of the pump body base, and the driving motor is more stable and not easy to shake during operation.

[0005] The object of the present invention of the utility model is achieved by the following technical solutions: A water pump internal pressure balance device, including a water pump body, a pump body base provided on one side of the water pump body, and a water outlet valve body provided on the other side of the pump body. A water pumping assembly is provided inside the water pump body, and the water pumping assembly is used to pump the water inside the pump body base into the water outlet valve body. A check valve assembly is hermetically connected to the inside of the water inlet of the pump body base, and the check valve assembly is used to prevent the water inside the pump body base from flowing back to the outside of the water inlet. A plurality of pressure relief holes are provided on the surface of the check valve assembly, and a pressure relief assembly is provided inside each pressure relief hole, and the pressure relief assembly does not allow the water inside the pump body base to flow back to the outside of the water inlet.

[0006] Preferably, the water pumping assembly includes a water pumping support housing, a driving motor, and a turbine. A water pumping support housing is provided inside the water pump body. One end of the water pumping support housing is connected to the water outlet valve body, and the other end is connected to the inside of the pump body base. A driving motor is provided inside the water pumping support housing, and a turbine is provided at the end of the driving motor.

[0007] Preferably, a first cylindrical boss is provided on the outer surface of the water pump body, and a plurality of rectangular bosses are provided on the inner surface of the water pump body. A screw support block is provided inside every two rectangular bosses. A first screw is rotatably connected to the inside of the first cylindrical boss, and the first screw is threadedly connected to the inside of the rectangular boss.

[0008] Preferably, a plurality of water outlet channels are provided on the surface of the water outlet valve body. The water pump body and the pump body base are detachably connected by a flange, and the water pump body and the water outlet valve body are detachably connected by a flange.

[0009] Preferably, the check valve assembly includes a check valve housing, a sliding cylinder, a sealing circular plate, a limit nut, and a first metal spring. Water is allowed to pass through the inside of the check valve housing. A plurality of housing bosses facing the center are provided inside the check valve housing. A second cylindrical boss is provided in the middle of the housing boss. A sliding cylinder is slidably provided inside the second cylindrical boss. A sealing circular plate is provided at one end of the sliding cylinder, and the sealing circular plate can block one end of the check valve housing close to the inside of the pump body base. A limit nut is provided at the other end of the sliding cylinder, and a first metal spring is provided between the limit nut and the housing boss.

[0010] Preferably, an arc-shaped groove is provided on the surface of the sealing circular plate, a silica gel ring is provided inside the arc-shaped groove, and the pressure relief hole is provided on the surface of the sealing circular plate.

[0011] Preferably, the pressure relief component includes a pressure relief housing, a steel ball, and a second metal spring. The outside of the pressure relief housing is provided with an external thread. One end of the pressure relief housing is provided with an inclined groove. The steel ball is slidably arranged inside the inclined groove, and the inclined groove is used to limit the steel ball from sliding to the outside. The other end surface of the pressure relief housing is provided with a plurality of exhaust holes. The second metal spring is arranged inside the inclined groove, and one end of the second metal spring is connected to the steel ball.

[0012] Compared with the prior art, the utility model has the following beneficial effects: 1. Whenever the pressure inside the pump body base changes and water flows from the inside of the pump body base into the inside of the one-way valve housing, the water impacts the left side of the sealing circular plate. Under the guiding action of the tensile force generated by the first metal spring, the silica gel ring on the sealing circular plate will gradually fit with the left end of the one-way valve housing, realizing the function of preventing water from flowing back, increasing the stability of the equipment during operation, and bringing convenience during use; 2. When one of the water outlet channels closes and stops discharging water, the rotation speed of the turbine will not change, which will cause the water pressure of the other water outlet channel to change. It is necessary to release the pressure inside the pump body base. During pressure relief, the steel ball slides to the right. During the sliding process, the second metal spring is compressed and deformed, and the pressure can be discharged through the exhaust holes, realizing the pressure relief function, avoiding the situation where the water output is prone to be large or small during water use, and making the water output of the entire equipment more stable; 3. When the first screw rotates, the screw support block will move left and right until the screw support block can clamp the outer surface of the water pumping support housing. The two ends of the driving motor are respectively fixed at the inner top of the water pump body and the bottom of the pump body base. The driving motor is more stable and not easy to shake during operation. This structure allows the driving motor to be finely adjusted in the up and down height, which is very convenient during disassembly and assembly, and brings convenience during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a perspective view of the utility model;

[0014] Figure 2 is a sectional view of the utility model;

[0015] Figure 3 is a partial sectional view of the utility model;

[0016] Figure 4 is a partial sectional view of the utility model;

[0017] Figure 5 is a partial sectional view of the utility model;

[0018] Figure 6 is the utility model in Figure 5 the enlarged view of area A;

[0019] Figure 7 is a partial exploded view of the utility model.

[0020] Markings in the figure: 1. Water pump body; 11. First cylindrical boss; 12. Rectangular boss; 13. Screw support block; 14. First screw; 2. Pump body base; 21. Water inlet; 3. Outlet valve body; 31. Outlet channel; 4. Water pumping assembly; 41. Water pumping support housing; 42. Driving motor; 43. Turbine; 5. Check valve assembly; 51. Check valve housing; 52. Housing boss; 53. Second cylindrical boss; 54. Sliding cylinder; 55. Sealing circular plate; 551. Arc-shaped groove; 56. Limit nut; 57. First metal spring; 58. Silicone ring; 59. Pressure relief hole; 6. Pressure relief assembly; 61. Pressure relief housing; 62. Steel ball; 63. Second metal spring; 611. Inclined groove; 613. Exhaust hole; 7. Flange. Specific implementation mode

[0021] The following further describes the present utility model in combination with the embodiments shown in the drawings:

[0022] As Figures 1 to 7 shown, a water pump internal pressure balance device includes a water pump body 1 in the shape of a cylinder as a whole, a pump body base 2 arranged on one side of the water pump body 1, one end of the pump body base 2 is provided with a water inlet 21, an outlet valve body 3 arranged on the other side of the pump body, the surface of the outlet valve body 3 is provided with two outlet channels 31, the water pump body 1 and the pump body base 2 are detachably connected through a flange 7, and the water pump body 1 and the outlet valve body 3 are detachably connected through a flange 7. After such a setting, it is convenient to disassemble and assemble the connections between the water pump body 1, the pump body base 2 and the outlet valve body 3 during maintenance, and it is also convenient to disassemble and transport them separately during transportation.

[0023] In this embodiment, a water pumping assembly 4 is arranged inside the water pump body 1. The water pumping assembly 4 is used to pump the water inside the pump body base 2 into the inside of the outlet valve body 3. The water pumping assembly 4 includes a water pumping support housing 41, a driving motor 42 and a turbine 43. A water pumping support housing 41 is arranged inside the water pump body 1. One end of the water pumping support housing 41 is connected to the outlet valve body 3, and the other end is connected to the inside of the pump body base 2. A driving motor 42 is arranged inside the water pumping support housing 41, and a turbine 43 is arranged at the end of the driving motor 42. After such a setting, the rotating shaft of the driving motor 42 can drive the turbine 43 to rotate. During the rotation of the turbine 43, the liquid inside the outlet valve body 3 generates centrifugal force, so that negative pressure is generated inside the outlet valve body 3 to discharge the liquid through the outlet channel 31.

[0024] In this embodiment, a check valve assembly 5 is hermetically connected inside the water inlet 21 of the pump body base 2. The check valve assembly 5 is used to prevent the water inside the pump body base 2 from flowing back to the outside of the water inlet 21. A number of pressure relief holes 59 are provided on the surface of the check valve assembly 5. Specifically, the check valve assembly 5 includes a check valve housing 51, a sliding cylinder body 54, a sealing circular plate 55, a limit nut 56, and a first metal spring 57. Water is allowed to pass through the inside of the check valve housing 51. Three housing bosses 52 facing the center are provided inside the check valve housing 51. A second cylinder boss 53 is provided in the middle of the housing boss 52. The sliding cylinder body 54 is slidably provided inside the second cylinder boss 53. One end of the sliding cylinder body 54 is fixedly connected to a sealing circular plate 55. The sealing circular plate 55 can block one end of the check valve housing 51 close to the inside of the pump body base 2. A limit nut 56 is provided at the other end of the sliding cylinder body 54. A first metal spring 57 is provided between the limit nut 56 and the housing boss 52. An arc-shaped groove 551 is provided on the surface of the sealing circular plate 55. A silica gel ring 58 is provided inside the arc-shaped groove 551. The pressure relief holes 59 are provided on the surface of the sealing circular plate 55. After such a setting, whenever the external water flows from the right side of the check valve housing 51 into the inside of the pump body base 2, the water will first impact the surface of the sealing circular plate 55. Then the sealing circular plate 55 drives the sliding cylinder body 54 to slide to the left, and the first metal spring 57 will produce a tensile deformation. During the sliding process, the silica gel ring 58 on the surface of the sealing circular plate 55 gradually separates from the left end of the check valve housing 51, and the opening between the sealing circular plate 55 and the left end of the check valve housing 51 becomes larger and larger, so that the water can normally flow into the inside of the pump body base 2. However, whenever the water flows from the inside of the pump body base 2 into the inside of the check valve housing 51, the water will impact the left side of the sealing circular plate 55. In this way, under the guiding action of the tensile force generated by the first metal spring 57, the silica gel ring 58 on the sealing circular plate 55 will gradually fit with the left end of the check valve housing 51, realizing the function of preventing water from flowing back.

[0025] In this embodiment, a pressure relief component 6 is provided inside each of the pressure relief holes 59. The pressure relief component 6 does not allow the water inside the pump body base 2 to flow back to the outside of the water inlet 21. Specifically, the pressure relief component 6 includes a pressure relief housing 61, a steel ball 62, and a second metal spring 63. An external thread 612 is provided on the outside of the pressure relief housing 61. An inclined groove 611 is provided at one end of the pressure relief housing 61. A steel ball 62 is slidably provided inside the inclined groove 611. Since the diameter of the leftmost side of the inclined groove 611 is the smallest and it gets larger towards the inside, the inclined groove 611 can restrict the steel ball 62 from sliding to the outside, but allows the steel ball 62 to slide into the inclined groove 611. A number of exhaust holes 613 are provided on the surface of the other end of the pressure relief housing 61. A second metal spring 63 is provided inside the inclined groove 611. One end of the second metal spring 63 is connected to the steel ball 62. After such a setting, whenever one of the water outlet channels 31 closes and stops discharging water, the rotation speed of the turbine 43 at this time will not change. This will cause the water pressure of the other water outlet channel 31 to change. If the pressure is not released, the water pressure is likely to be unstable when using water. At this time, only the pressure inside the pump body base 2 needs to be released. When relieving the pressure, the steel ball 62 will slide to the right. During the sliding process, the second metal spring 63 will be squeezed and deformed. At this time, the pressure can be discharged through the exhaust holes 613. When normal pressure relief is not required, the steel ball 62 will restrict the second metal spring 63 from pushing it to the leftmost side. A first cylindrical boss 11 is provided on the outer surface of the water pump body 1. A number of rectangular bosses 12 are provided on the inner surface of the water pump body 1. A screw support block 13 is provided inside each two rectangular bosses 12. A first screw 14 is rotatably connected inside the first cylindrical boss 11. The first screw 14 is threadedly connected to the inside of the rectangular boss 12. After such a setting, whenever the first screw 14 rotates, the screw support block 13 will move left and right until the screw support block 13 can clamp the outer surface of the water pumping support housing 41. The two ends of the drive motor 42 are respectively fixed to the inner top of the water pump body 1 and the bottom of the pump body base 2. The drive motor 42 is more stable and not prone to shaking during operation. It should be noted that the first screw 14 rotates in place inside the first cylindrical boss 11, that is, it will not move left and right. Only the screw support block 13 will move left and right. Therefore, the drive motor 42 can be finely adjusted in the up and down height, and it is also very convenient during the disassembly and assembly process.

[0026] Working principle and usage method of the present utility model:

[0027] First, when the external water flows from the right side of the one-way valve housing 51 into the interior of the pump base 2, the water will first impact the surface of the sealing circular plate 55. Then, the sealing circular plate 55 drives the sliding cylinder 54 to slide to the left, and the first metal spring 57 will undergo tensile deformation. During the sliding process, the silica gel ring 58 on the surface of the sealing circular plate 55 gradually separates from the left end of the one-way valve housing 51, and the opening between the sealing circular plate 55 and the left end of the one-way valve housing 51 becomes larger and larger, enabling the water to flow normally into the interior of the pump base 2 and flow into the interior of the water outlet valve body 3 through the gap between the pumping support housing 41 and the inside of the water pump body 1. Then, the rotating shaft of the driving motor 42 can drive the turbine 43 to rotate. During the rotation of the turbine 43, the liquid inside the water outlet valve body 3 generates centrifugal force, creating negative pressure inside the water outlet valve body 3 to discharge the liquid from the water outlet channel 31.

[0028] Whenever the water flows from the interior of the pump base 2 into the interior of the one-way valve housing 51, the water will impact the left side of the sealing circular plate 55. In this way, under the guiding action of the tensile force generated by the first metal spring 57, the silica gel ring 58 on the sealing circular plate 55 will gradually fit with the left end of the one-way valve housing 51, realizing the function of preventing water from flowing back. Whenever one of the water outlet channels 31 closes to discharge water, the rotation speed of the turbine 43 will not change at this time, which will cause the water pressure at the other water outlet channel 31 to change. At this time, just release the pressure inside the pump base 2. When releasing the pressure, the steel ball 62 will slide to the right, and the second metal spring 63 will be compressed and deformed during the sliding process. At this time, the pressure can be discharged through the exhaust hole 613.

[0029] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the technical field to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A water pump internal pressure balancing device, comprising a water pump body (1), a pump body base (2) arranged on one side of the water pump body (1), and a water outlet valve body (3) arranged on the other side of the pump body, characterized in that: A pumping assembly (4) is provided inside the water pump body (1), and the pumping assembly (4) is used to pump water inside the pump body base (2) to the inside of the water outlet valve body (3). A one-way valve assembly (5) is sealed inside the water inlet (21) of the pump body base (2), and the one-way valve assembly (5) is used to prevent water inside the pump body base (2) from flowing back to the outside of the water inlet (21). A plurality of pressure relief holes (59) are provided on the surface of the one-way valve assembly (5), and a pressure relief assembly (6) is provided inside each of the pressure relief holes (59), and the pressure relief assembly (6) does not allow water inside the pump body base (2) to flow back to the outside of the water inlet (21).

2. The water pump internal pressure balancing device according to claim 1, characterized in that: The pumping assembly (4) comprises a pumping support shell (41), a driving motor (42) and a turbine (43); the pumping support shell (41) is provided inside the water pump body (1); one end of the pumping support shell (41) is connected to the water outlet valve body (3), and the other end is connected to the inside of the pump body base (2); the pumping support shell (41) has an internal driving motor (42); and a turbine (43) is provided at the end of the driving motor (42).

3. The water pump internal pressure balancing device according to claim 2, characterized in that: The outer surface of the water pump body (1) is provided with a first columnar boss (11), the inner surface of the water pump body (1) is provided with a plurality of rectangular bosses (12), a screw support block (13) is provided inside every two rectangular bosses (12), a first screw (14) is rotatably connected inside the first columnar boss (11), and the first screw (14) is threadedly connected to the inside of the rectangular boss (12).

4. The water pump internal pressure balancing device according to claim 3, characterized in that: A plurality of water outlet channels (31) are provided on the surface of the water outlet valve body (3); the water pump body (1) and the pump body base (2) are detachably connected via a flange (7); and the water pump body (1) and the water outlet valve body (3) are detachably connected via a flange (7).

5. The water pump internal pressure balancing device according to claim 4, characterized in that: The one-way valve assembly (5) comprises a one-way valve housing (51), a sliding cylinder (54), a sealing circular plate (55), a limiting nut (56) and a first metal spring (57). The interior of the one-way valve housing (51) allows water to pass through. The interior of the one-way valve housing (51) is provided with a plurality of housing bosses (52) facing the center. A second column boss (53) is provided in the middle of the housing boss (52). A sliding cylinder (54) is slidably provided inside the second column boss (53). A sealing circular plate (55) is provided at one end of the sliding cylinder (54). The sealing circular plate (55) can block one end of the one-way valve housing (51) close to the interior of the pump body base (2). A limiting nut (56) is provided at the other end of the sliding cylinder (54). A first metal spring (57) is provided between the limiting nut (56) and the housing boss (52).

6. The water pump internal pressure balancing device according to claim 5, characterized in that: An arc-shaped groove (551) is provided on the surface of the sealing circular plate (55), a silicone ring (58) is provided inside the arc-shaped groove (551), and the pressure relief hole (59) is provided on the surface of the sealing circular plate (55).

7. The water pump internal pressure balancing device according to claim 6, characterized in that: The pressure relief assembly (6) comprises a pressure relief housing (61), a steel ball (62) and a second metal spring (63); the pressure relief housing (61) is provided with an external thread (612) on the outside; one end of the pressure relief housing (61) is provided with an inclined groove (611); a steel ball (62) is slidably provided inside the inclined groove (611); the inclined groove (611) is used to limit the steel ball (62) from sliding to the outside; a plurality of exhaust holes (613) are provided on the surface of the other end of the pressure relief housing (61); a second metal spring (63) is provided inside the inclined groove (611); one end of the second metal spring (63) is connected to the steel ball (62).

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