A damping and vibration reduction structure inside a booster pump cavity and a booster pump

Abstract

This invention discloses a damping and vibration reduction structure for a booster pump cavity, including a pump head housing, a damping plate, and a pump head cover. The pump head housing includes an inlet pipe, an outlet pipe, and an isolation ring disposed between the inlet and outlet pipes. The isolation ring has a first stepped surface. The damping plate is placed on the first stepped surface. The pump head cover is detachably fitted onto the isolation ring, and when the pump head cover is fitted onto the isolation ring, the pump head cover abuts the damping plate against the first stepped surface to achieve a seal. The damping and vibration reduction structure of this invention, by providing a first stepped surface on the isolation ring of the pump head housing for placing the damping plate, and by fitting the pump head cover onto the isolation ring to abut the damping plate against the first stepped surface, ensures a seal between the damping plate and the isolation ring, allowing the damping plate to produce a damping effect, thereby ensuring the stable operation of the booster pump. Furthermore, this invention also provides a booster pump with this damping and vibration reduction structure.

Description

Technical Field

[0001] This invention relates to the field of booster pump technology, specifically to a booster pump cavity damping and vibration reduction structure and a booster pump. Background Technology

[0002] A booster pump, as the name suggests, is a pump used to increase pressure. It can be used to pressurize liquids or gases to meet usage requirements. Existing water purifiers typically include a booster pump to pressurize tap water. The water in the high-pressure chamber generates high-pressure pulses, flows through the high-pressure chamber into the outlet, and then into the water circuit of the water purifier.

[0003] The pulsating characteristics of water in the high-pressure chamber of traditional booster pumps cause vibrations in the pump and water circuit, leading to increased overall noise levels and failing to meet current usage requirements. Therefore, a damping structure needs to be incorporated into the booster pump to reduce the pulsating characteristics of the water in the high-pressure chamber. Currently, the damping structure within the booster pump chamber typically includes a damping sleeve and a damping plate. The damping plate is pressed and fixed to the damping sleeve by a pump head cover to form a seal. After a period of use, the damping sleeve and damping plate are prone to loosening, creating gaps and ultimately causing the damping plate to fail. Summary of the Invention

[0004] To overcome the defects described in the prior art, the present invention provides an internal damping and vibration reduction structure for a booster pump and a booster pump, which can ensure the seal between the damping plate and the isolation ring, enabling the damping plate to produce a damping effect and ensuring the stable operation of the booster pump.

[0005] The technical solution adopted by this invention to solve its problem is:

[0006] A damping and vibration reduction structure for a booster pump cavity includes:

[0007] The pump head housing includes an inlet pipe, an outlet pipe, and an isolation ring disposed between the inlet pipe and the outlet pipe, wherein the isolation ring has a first stepped surface.

[0008] A damping plate is placed on the first step surface;

[0009] A pump head cover is detachably fitted onto the isolation ring; when the pump head cover is fitted onto the isolation ring, the pump head cover abuts the damping sheet against the first step surface to achieve a seal.

[0010] The damping and shock absorption structure of the present invention provides a first stepped surface on the isolation ring of the pump head housing for placing a damping plate, and then closes the pump head cover onto the isolation ring to abut the damping plate against the first stepped surface, thereby ensuring the seal between the damping plate and the isolation ring, so that the damping plate can produce a damping effect, thereby ensuring the working stability of the booster pump.

[0011] Furthermore, a first annular limiting groove is provided on the first step surface, and a first annular protrusion is provided on the bottom surface of the outer periphery of the damping sheet to engage with the first annular limiting groove.

[0012] Therefore, the snap-fit ​​between the first annular limiting groove and the first annular protrusion not only enables the damping sheet to be quickly assembled onto the first step surface, but also improves the sealing performance between the two.

[0013] Furthermore, the bottom of the pump head cover has a grooved ring extending downwards. When the pump head cover is closed on the isolation ring, the grooved ring and the first stepped surface together abut against the top and bottom surfaces of the outer periphery of the damping sheet and form a seal.

[0014] Furthermore, the end face of the groove ring is also provided with a second annular protrusion for abutting against the top surface of the outer periphery of the damping sheet, and the end face of the first stepped surface is provided with a third annular protrusion for abutting against the bottom surface of the outer periphery of the damping sheet.

[0015] Therefore, by providing a second annular protrusion and a third annular protrusion on the end face of the groove ring and the end face of the first step surface respectively, the contact force between them and the outer periphery of the damping sheet is increased, thereby improving the sealing performance between the damping sheet and the isolation ring.

[0016] Furthermore, it also includes a sealing ring disposed between the pump head gland and the isolation ring, wherein:

[0017] The pump head cover is provided with a second annular limiting groove outside the groove ring, the isolation ring is provided with a second stepped surface, and the sealing ring is sleeved on the groove ring and located between the second annular limiting groove and the second stepped surface;

[0018] The top and bottom surfaces of the sealing ring abut against the second annular limiting groove and the second stepped surface, respectively, to form a seal.

[0019] Furthermore, a damping plate deformation space is formed between the damping plate, the isolation ring, and the pump head cover. A damping elastic pad is provided in the damping plate deformation space, and the damping elastic pad can elastically abut against the damping plate.

[0020] Therefore, when the water flow pushes the damping plate to move into the damping plate deformation space, the damping plate contacts and compresses the damping spring pad. During the compression process of the damping spring pad, it absorbs the pulsating performance of the water flow. Subsequently, the pulsating performance of the water flow decreases, causing the damping spring pad to reset and pushing the damping plate to reset.

[0021] Furthermore, the damping sheet is provided with a first damping deformation arc surface that is turned downwards, and the damping pad is provided with a second damping deformation arc surface that is turned downwards.

[0022] Furthermore, the pump head cover and the damping spring pad are fixed together by a slotted snap-fit ​​structure, wherein:

[0023] The slotted block locking structure includes a locking hole located at the bottom of the pump head cover and a protrusion located on the top of the damping spring pad and engaging with the locking hole; or...

[0024] The slotted snap-fit ​​structure includes a protrusion located at the bottom of the pump head cover and a snap-fit ​​hole located at the top of the damping pad and engaging with the protrusion.

[0025] In addition, the present invention also provides a booster pump, comprising the above-mentioned damping and shock absorption structure and valve core, wherein:

[0026] The valve core is disposed inside the pump head housing. The center of the valve core is located inside the isolation ring and forms a high-pressure water outlet chamber with the damping plate and the isolation ring. The high-pressure water outlet chamber is connected to the water outlet pipe. The valve core is located outside the isolation ring away from the center and forms a low-pressure water inlet chamber with the isolation ring and the pump head housing. The low-pressure water inlet chamber is connected to the water inlet pipe.

[0027] Furthermore, it also includes a diversion module disposed within the high-pressure water outlet chamber and close to the valve core, the diversion module including a damping mesh with a plurality of diversion holes on the damping mesh.

[0028] Therefore, the high-pressure water coming out from the center of the valve core is diverted through several diversion holes on the damping mesh, which can reduce its pressure. Then, it is buffered and damped by the damping and shock absorption structure.

[0029] In summary, the booster pump cavity damping and vibration reduction structure and booster pump of the present invention have the following beneficial effects:

[0030] (1) The damping and shock absorption structure of the present invention provides a first step surface on the isolation ring of the pump head housing for placing the damping plate, and then closes the pump head cover onto the isolation ring to abut the damping plate against the first step surface, thereby ensuring the seal between the damping plate and the isolation ring, so that the damping plate can produce a damping effect, thereby ensuring the working stability of the booster pump.

[0031] (2) The damping and shock absorption structure of the present invention, through the snap-fit ​​between the first annular limiting groove and the first annular protrusion, can not only realize the rapid assembly of the damping sheet onto the first step surface, but also improve the sealing between the two.

[0032] (3) The damping and shock absorption structure of the present invention increases the contact force between the groove ring and the outer periphery of the damping sheet by providing a second annular protrusion and a third annular protrusion on the end face of the groove ring and the end face of the first step surface, thereby improving the sealing performance between the damping sheet and the isolation ring.

[0033] (4) In the damping and shock absorption structure of the present invention, when the water flow pushes the damping plate to move into the deformation space of the damping plate, the damping plate abuts against and compresses the damping spring pad. During the compression process of the damping spring pad, it absorbs the pulse performance in the water flow. Subsequently, the pulse performance of the water flow decreases, causing the damping spring pad to reset and pushing the damping plate to reset.

[0034] (5) In the booster pump of the present invention, the high pressure water coming out from the center of the valve core is diverted through several diversion holes on the damping mesh, which can reduce its pressure, and then it is buffered and damped by the damping and shock absorption structure. Attached Figure Description

[0035] Figure 1 This is an exploded view of the damping and vibration reduction structure of the present invention;

[0036] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0037] Figure 3 for Figure 1 A structural diagram from another perspective;

[0038] Figure 4 for Figure 3 Enlarged view of part B in the middle;

[0039] Figure 5 This is a schematic diagram of the damping and vibration reduction structure of the present invention;

[0040] Figure 6 This is a cross-sectional schematic diagram of the damping and vibration reduction structure of the present invention;

[0041] Figure 7 for Figure 6 Enlarged view of a section in the middle C;

[0042] Figure 8 This is an exploded schematic diagram of the booster pump section of the present invention;

[0043] Figure 9 This is a cross-sectional schematic diagram of the booster pump part of the present invention.

[0044] The meanings of the reference numerals in the attached figures are as follows:

[0045] 1. Pump head housing; 11. Inlet pipe; 12. Outlet pipe; 13. Isolation ring; 131. First stepped surface; 1311. Third annular convex edge; 1312. First annular limiting groove; 132. Second stepped surface; 133. Outlet hole; 2. Damping plate; 21. First annular convex edge; 22. First damping deformation arc surface; 3. Pump head cover; 31. Protrusion; 32. Groove ring; 321. Second annular convex edge; 33. Second annular limiting groove; 4. Damping spring pad; 41. Second damping deformation arc surface; 42. Locking hole; 43. Reinforcing rib; 5. Sealing ring; 6. Valve core; 7. High-pressure outlet chamber; 8. Low-pressure inlet chamber; 9. Diverting module; 91. Damping mesh; 911. Diverting hole. Detailed Implementation

[0046] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0047] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0049] Example 1

[0050] See Figure 1-7 This invention first provides a damping and vibration reduction structure within a booster pump cavity, including a pump head housing 1, a damping plate 2, and a pump head cover 3. The pump head housing 1 includes an inlet pipe 11, an outlet pipe 12, and an isolation ring 13 disposed between the inlet pipe 11 and the outlet pipe 12. The isolation ring 13 divides the pump head housing 1 into a low-pressure chamber and a high-pressure chamber, with the flow from the inlet pipe 11 to the outlet pipe 12 passing through both the low-pressure chamber and the high-pressure chamber sequentially. The isolation ring 13 also has a first stepped surface 131 for placing the damping plate 2. The pump head cover 3 is detachably fitted onto the isolation ring 13. When the pump head cover 3 is fitted onto the isolation ring 13, the pump head cover 3 presses the damping plate 2 against the first stepped surface 131 to achieve a seal between the damping plate 2 and the isolation ring 13. A damping plate deformation space is formed between the damping plate 2, the isolation ring 13, and the pump head cover 3.

[0051] In this embodiment, the pump head cover 3 is detachably connected to the isolation ring 13 by screws.

[0052] Specifically, a first annular limiting groove 1312 is provided on the first stepped surface 131, and a first annular protrusion 21 is integrally formed on the bottom surface of the outer periphery of the damping plate 2, which engages with the first annular limiting groove 1312. Thus, the engagement between the first annular limiting groove 1312 and the first annular protrusion 21 not only allows for quick assembly of the damping plate 2 onto the first stepped surface 131, but also improves the sealing performance between the two. A grooved ring 32 extends from the pump head cap 3 into the damping plate's movement space. When the pump head cap 3 is closed on the isolation ring 13, the grooved ring 32 and the first stepped surface 131 together abut against the top and bottom surfaces of the outer periphery of the damping plate 2, forming a seal.

[0053] Therefore, by setting a first stepped surface 131 on the isolation ring of the pump head housing 1 for placing the damping plate 2, and then by covering the pump head cover 3 onto the isolation ring 13 to bring the damping plate 2 against the first stepped surface 131, the seal between the damping plate 2 and the isolation ring 13 can be guaranteed, so that the damping plate 2 can produce a damping effect, thereby ensuring the working stability of the booster pump.

[0054] Furthermore, to further improve the sealing performance between the damping plate 2 and the isolation ring 13, the end face of the grooved ring 32 is also provided with a second annular protrusion 321 for abutting against the top surface of the outer periphery of the damping plate 2, and the end face of the first stepped surface 131 is provided with a third annular protrusion 1311 for abutting against the bottom surface of the outer periphery of the damping plate 2. Thus, by providing the second annular protrusion 321 and the third annular protrusion 1311 on the end face of the grooved ring 32 and the end face of the first stepped surface 131 respectively, the contact force between them and the outer periphery of the damping plate 2 is increased, thereby improving the sealing performance between the damping plate 2 and the isolation ring 13.

[0055] See also Figure 1-7 The damping plate deformation space is provided with a damping elastic pad 4, which can elastically abut against the damping plate 2. The damping plate 2 has a first damping deformation arc surface 22 that is turned downwards, and the damping elastic pad 4 has a second damping deformation arc surface 41 that is turned downwards. In addition, the pump head cover 3 and the damping elastic pad 4 are fixed together by a slotted block snap-fit ​​structure. The slotted block snap-fit ​​structure includes a protrusion 31 provided at the bottom of the pump head cover 3 and a snap-fit ​​hole 42 provided at the top of the damping elastic pad 4 and engaging with the protrusion 31.

[0056] Of course, in other embodiments, the positions of the protrusion 31 and the locking hole 42 can be interchanged, that is, the locking hole 42 is set at the bottom of the pump head cover 3 and the protrusion 31 is set at the top of the damping spring pad 4, which can achieve the same technical effect, and there is no limitation here.

[0057] In this embodiment, the protrusion 31 is located at the bottom center of the pump head cover 3 and is integrally formed, and the locking hole 42 is located at the top center of the damping spring pad 4 and is integrally formed; in addition, the damping spring pad 4 is also provided with a plurality of reinforcing ribs 43 connected to the locking hole 42, and the plurality of reinforcing ribs 43 are evenly arranged along the circumferential direction of the locking hole 42 and integrally formed with the damping spring pad 4.

[0058] Therefore, when the water flow pushes the damping plate 2 to move into the damping plate deformation space, the first damping deformation arc surface 22 on the damping plate 2 abuts against and compresses the second damping deformation arc surface 41 on the damping spring pad 4. During the compression process of the damping spring pad 4, it absorbs the pulse performance in the water flow. Subsequently, the pulse performance of the water flow decreases, causing the damping spring pad 4 to reset and push the damping plate 2 to reset.

[0059] In addition, a sealing ring 5 is provided between the pump head cover 3 and the isolation ring 13. The pump head cover 3 is provided with a second annular limiting groove 33 on the outside of the groove ring 32. The isolation ring 13 is provided with a second stepped surface 132. The sealing ring 5 is sleeved on the groove ring 32 and is located between the second annular limiting groove 33 and the second stepped surface 132. When the pump head cover 3 is pressed onto the isolation ring 13, the top and bottom surfaces of the sealing ring 5 abut against the second annular limiting groove 33 and the second stepped surface 132 respectively to form a waterproof seal.

[0060] Example 2

[0061] See Figure 8-9 The present invention also provides a booster pump, including the damping and shock absorption structure provided in Embodiment 1 and a valve core 6. The valve core 6 is disposed inside the pump head housing 1. The center of the valve core 6 is located inside the isolation ring 13, and a high-pressure water outlet chamber 7 is formed between the valve core 6, the damping plate 2, and the isolation ring 13. The high-pressure water outlet chamber 7 is provided with a water outlet hole 133 that connects to the water outlet pipe 12. The valve core 6 is located outside the isolation ring 13 away from the center, and a low-pressure water inlet chamber 8 is formed between the valve core 6, the isolation ring 13, and the pump head housing 1. The low-pressure water inlet chamber 8 connects to the water inlet pipe 11.

[0062] In addition, a diversion module 9 is provided in the high-pressure water outlet chamber 7. The diversion module 9 includes several stacked damping meshes 91, and several diversion holes 911 are provided on the upper ring of the damping meshes 91. Thus, the high-pressure water coming out from the center of the valve core 6 is diverted by the several diversion holes 911 on the damping meshes 91, which can reduce its pressure. The diverted water is then buffered and damped by the damping and shock absorption structure.

[0063] In summary, the booster pump cavity damping and vibration reduction structure and booster pump of the present invention have the following beneficial effects:

[0064] (i) The damping and shock absorption structure of the present invention provides a first stepped surface 131 on the isolation ring 13 of the pump head housing 1 for placing the damping plate 2, and then covers the isolation ring 13 with the pump head cover 3 to abut the damping plate 2 against the first stepped surface 131, thereby ensuring the seal between the damping plate 2 and the isolation ring 13, so that the damping plate 2 can produce a damping effect, thereby ensuring the working stability of the booster pump.

[0065] (ii) The damping and shock absorption structure of the present invention, through the snap-fit ​​between the first annular limiting groove 1312 and the first annular protrusion 21, not only can the damping sheet 2 be quickly assembled onto the first stepped surface 131, but also the sealing between the two is improved.

[0066] (III) In the damping and shock absorption structure of the present invention, when the water flow pushes the damping plate 2 to move into the damping plate deformation space, the damping plate 2 abuts against and compresses the damping spring pad 4. During the compression process of the damping spring pad 4, it absorbs the pulse performance in the water flow. Subsequently, the pulse performance of the water flow decreases, causing the damping spring pad 4 to reset and push the damping plate 2 to reset.

[0067] (iv) The damping and shock absorption structure of the present invention increases the contact force between the second annular protrusion 321 and the third annular protrusion 1311 on the end face of the groove ring 32 and the end face of the first step surface 131, thereby improving the sealing performance between the damping sheet 2 and the isolation ring 13.

[0068] (v) In the booster pump of the present invention, the high pressure water coming out from the center of the valve core 6 is diverted through several diversion holes 911 on the damping mesh 91, which can reduce its pressure, and then it is buffered and damped by the damping and shock absorption structure.

[0069] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A booster pump, characterized in that, include: The pump head housing includes an inlet pipe, an outlet pipe, and an isolation ring disposed between the inlet pipe and the outlet pipe, wherein the isolation ring has a first stepped surface. A damping plate is placed on the first step surface; A pump head cover is detachably fitted onto the isolation ring; when the pump head cover is fitted onto the isolation ring, the pump head cover abuts the damping sheet against the first step surface to achieve a seal. The damping plate forms a deformation space between itself, the isolation ring, and the pump head cover. A damping elastic pad is provided in the deformation space of the damping plate, and the damping elastic pad can elastically abut against the damping plate. The damping sheet is provided with a first damping deformation arc surface that is flipped downwards, and the damping pad is provided with a second damping deformation arc surface that is flipped downwards. It also includes a valve core, which is disposed inside the pump head housing. The center of the valve core is located inside the isolation ring and forms a high-pressure water outlet chamber with the damping plate and the isolation ring. The high-pressure water outlet chamber is connected to the water outlet pipe. The valve core is located outside the isolation ring away from the center and forms a low-pressure water inlet chamber with the isolation ring and the pump head housing. The low-pressure water inlet chamber is connected to the water inlet pipe. It also includes a diversion module disposed in the high-pressure water outlet chamber and close to the valve core. The diversion module includes several stacked damping meshes, and the damping meshes are provided with several diversion holes.

2. The booster pump according to claim 1, characterized in that, A first annular limiting groove is provided on the first step surface, and a first annular protrusion is provided on the bottom surface of the outer periphery of the damping sheet to engage with the first annular limiting groove.

3. The booster pump according to claim 1 or 2, characterized in that, The bottom of the pump head cover has a grooved ring extending downwards. When the pump head cover is closed on the isolation ring, the grooved ring and the first stepped surface together abut against the top and bottom surfaces of the outer periphery of the damping sheet and form a seal.

4. The booster pump according to claim 3, characterized in that, The end face of the groove ring is further provided with a second annular protrusion for abutting against the top surface of the outer periphery of the damping sheet, and the end face of the first stepped surface is provided with a third annular protrusion for abutting against the bottom surface of the outer periphery of the damping sheet.

5. The booster pump according to claim 3, characterized in that, It also includes a sealing ring disposed between the pump head gland and the isolation ring, wherein: The pump head cover is provided with a second annular limiting groove outside the groove ring, the isolation ring is provided with a second stepped surface, and the sealing ring is sleeved on the groove ring and located between the second annular limiting groove and the second stepped surface; The top and bottom surfaces of the sealing ring abut against the second annular limiting groove and the second stepped surface, respectively, to form a seal.

6. The booster pump according to claim 1, characterized in that, The pump head cover and the damping spring pad are fixed together by a slotted snap-fit ​​structure, wherein: The slotted block locking structure includes a locking hole located at the bottom of the pump head cover and a protrusion located on the top of the damping spring pad and engaging with the locking hole; or... The slotted snap-fit ​​structure includes a protrusion located at the bottom of the pump head cover and a snap-fit ​​hole located at the top of the damping pad and engaging with the protrusion.

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