Pump head structure and booster pump

Abstract

The utility model relates to the technical field of water purification, in particular to a pump head structure and a booster pump. The pump head structure comprises a fluid chamber, a diaphragm chamber assembly, a diaphragm and a support, the bottom of the fluid chamber is provided with a first crimping part, the crimping part is provided with a sealing groove, the top of the support is provided with a second crimping part, the second crimping part is provided with a mounting groove, the mounting groove is provided with a sealing washer, the upper end of the sealing washer protrudes out of the mounting groove, and the diaphragm chamber assembly is provided with a diaphragm. The first crimping part and the second crimping part are crimped, so that the sealing washer is partially extruded into the sealing groove, the diaphragm and the diaphragm chamber assembly are clamped between the fluid chamber and the bracket, and the diaphragm and the diaphragm chamber assembly form a plurality of diaphragm chambers. The problem that the crimping sealing effect of a fluid chamber and a support in an existing booster pump is poor is solved.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, and in particular to a pump head structure and a booster pump. Background Technology

[0002] Booster pumps used in water purifiers typically have the fluid chamber cover mounted on a bracket. Since the fluid chamber cover and the bracket need to be sealed, the fluid chamber and the bracket need to be pressed very tightly. However, after prolonged use, the fit between the two will deteriorate, resulting in poor sealing performance. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model proposes a pump head structure and a booster pump, aiming to solve the problem of poor sealing effect between the fluid chamber and the support in existing booster pumps.

[0004] The technical solution proposed by this utility model is:

[0005] A pump head structure includes a fluid chamber, a diaphragm chamber assembly, a diaphragm, and a support. The bottom of the fluid chamber has a first pressing part with a sealing groove. The top of the support has a second pressing part with an mounting groove and a sealing gasket. The upper end of the sealing gasket protrudes from the mounting groove. The first pressing part and the second pressing part are pressed together so that the sealing gasket is partially squeezed into the sealing groove. The diaphragm and the diaphragm chamber assembly are sandwiched between the fluid chamber and the support, forming a plurality of diaphragm chambers.

[0006] Furthermore, the upper end of the sealing gasket has a free portion that is not abutted by the first pressing portion, and the diaphragm is provided with a sealing rib, which abuts against the free portion and compresses the free portion to deform.

[0007] Furthermore, the sealing groove is arranged continuously around the internal space of the fluid chamber.

[0008] Furthermore, the pump head structure includes multiple piston structures, each of which is disposed on the diaphragm and located in one of the diaphragm chambers.

[0009] Furthermore, the piston structure includes a piston, a sealing ring, and a screw. The sealing ring includes a sealing ring body, the bottom wall of which protrudes downward to form a first sealing ring. The outer wall of the first sealing ring is a sloped wall. The piston has a first sealing groove, and the bottom groove of the first sealing groove has a second sealing groove. The bottom wall of the second sealing groove has a first through hole. The diaphragm has a second through hole. The shank of the screw passes through the inner wall of the sealing ring body and the first through hole. The sealing ring body is sandwiched between the piston and the head of the screw. The bottom wall of the sealing ring body abuts against the first sealing groove, and the outer wall of the first sealing ring abuts against the sloped wall of the second sealing groove.

[0010] Furthermore, the top wall of the sealing ring body protrudes upward to form a second sealing ring, which is used to abut against the head of the screw.

[0011] Furthermore, the inner wall of the sealing ring body, the inner wall of the first sealing ring, and the inner wall of the second sealing ring are concentric circles and are the same size.

[0012] Furthermore, the outer wall of the second sealing ring is a beveled wall.

[0013] Furthermore, the pump head structure includes a piston bracket, the piston bracket having a threaded hole, and the shank of the screw passing through the inner ring wall of the sealing ring body, the first through hole, the second through hole, and connecting to the threaded hole.

[0014] Furthermore, the number of the plurality of diaphragm chambers is six, and the six diaphragm chambers are arranged evenly around each other.

[0015] This utility model also provides a booster pump, characterized in that it includes a pump head structure, the pump head structure including a fluid chamber, a diaphragm chamber assembly, a diaphragm, and a support. The bottom of the fluid chamber is provided with a first pressing part, the pressing part having a sealing groove. The top of the support is provided with a second pressing part, the second pressing part having an installation groove, the installation groove having a sealing gasket, the upper end of the sealing gasket protruding from the installation groove. The first pressing part and the second pressing part are pressed together so that the sealing gasket is partially squeezed into the sealing groove. The diaphragm and the diaphragm chamber assembly are sandwiched between the fluid chamber and the support, the diaphragm and the diaphragm chamber assembly forming multiple diaphragm chambers.

[0016] According to the above technical solution, the beneficial effects of this utility model are as follows: the fluid chamber and the bracket are connected by pressing the first pressing part and the second pressing part together. A sealing gasket is provided on the second pressing part. In this way, the sealing gasket will be squeezed by the first pressing part. The first pressing part is provided with a sealing groove. The sealing gasket will be embedded in the sealing groove due to the compression deformation. This results in a better sealing effect and solves the problem of poor sealing effect of the fluid chamber and the bracket in the existing booster pump. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the pump head structure provided in the embodiment of this utility model;

[0018] Figure 2 yes Figure 1 Enlarged view of the middle part of the structure.

[0019] Figure 3 This is a schematic diagram of the structure of the sealing ring provided in the embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the sealing ring provided in another direction using an embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the pump head structure provided in the embodiment of this utility model;

[0022] Figure 6 yes Figure 5 Enlarged view of point B in the middle;

[0023] Figure 7 This is a schematic diagram of the piston structure provided in the embodiment of this utility model.

[0024] Among them, fluid chamber 11, first crimping part 111, and sealing groove 1111;

[0025] 12 bracket, 121 second crimping part, 1211 mounting groove, 1212 sealing gasket, 1212 free part;

[0026] Pump head structure 1, sealing rib 131;

[0027] Sealing ring 21, sealing ring body 211, first sealing ring 212, second sealing ring 213, piston structure 22, piston 221, first sealing groove 2211, second sealing groove 2212, first through hole 2213, screw 222, diaphragm 13, piston support 14, diaphragm chamber assembly 3, diaphragm chamber 31. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model 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 merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] Example 1

[0030] like Figure 1 and Figure 2 As shown in the figure, this utility model embodiment also proposes a pump head structure 1, including a fluid chamber 11, a diaphragm chamber assembly 3, a diaphragm 13, and a support 12. The bottom of the fluid chamber 11 is provided with a first pressing part 111, and the pressing part is provided with a sealing groove 1111. The top of the support 12 is provided with a second pressing part 121, and the second pressing part 121 is provided with a mounting groove 1211. The mounting groove 1211 is provided with a sealing gasket 1212, and the upper end of the sealing gasket 1212 protrudes from the mounting groove 1211. The first pressing part 111 and the second pressing part 121 are pressed together so that the sealing gasket 1212 is partially squeezed into the sealing groove 1111. The diaphragm 13 and the diaphragm chamber assembly 3 are sandwiched between the fluid chamber 11 and the support 12, and the diaphragm 13 and the diaphragm chamber assembly 3 form a plurality of diaphragm chambers 31.

[0031] The fluid chamber 11 and the bracket 12 are connected by pressing the first pressing part 111 and the second pressing part 121. A sealing gasket 1212 is provided on the second pressing part 121. The sealing gasket 1212 is squeezed by the first pressing part 111. The first pressing part 111 is provided with a sealing groove 1111. The sealing gasket 1212 will be embedded in the sealing groove 1111 due to the compression deformation. This has a better sealing effect and solves the problem of poor sealing effect between the fluid chamber and the bracket in the existing booster pump.

[0032] In this embodiment, the newly added sealing groove 1111 is not used to install and fix the sealing gasket 1212, but is used to deform the sealing gasket 1212 during crimping so that it is squeezed into the sealing groove 1111.

[0033] Specifically, the shape of the sealing groove 1111 is not limited; it can be rectangular, arc-shaped, or irregular.

[0034] In this embodiment, the sealing groove 1111 includes a first sidewall, a second sidewall, and a bottom wall. The two sides of the bottom wall are respectively connected to the first sidewall and the second sidewall, thereby forming the sealing groove 1111.

[0035] In this embodiment, the width of the sealing groove 1111 is smaller than the width of the sealing gasket 1212, so that the sealing gasket 1212 can fill the sealing groove 1111 in the width direction, thereby increasing the sealing performance.

[0036] Specifically, the sealing gasket 1212 abuts against the first pressing part 111 and is squeezed into the sealing groove 1111, and abuts against the first side wall, the second side wall and the bottom wall respectively.

[0037] In some embodiments, the sealing gasket 1212 abuts against the first pressing portion 111 and is squeezed into the sealing groove 1111. The portion squeezed into the sealing groove 1111 abuts against the first sidewall and the second sidewall respectively, but does not contact the bottom wall. This also achieves a good sealing effect. Of course, depending on the irregular distribution of the upper part of the sealing gasket 1212, the portion squeezed into the sealing groove 1111 may only abut against the first sidewall or the second sidewall, which can also achieve a sealing effect.

[0038] In this embodiment, the sealing groove 1111 is arranged continuously around the internal space of the fluid chamber 11. The sealing groove 1111 is arranged around the fluid chamber 11, and the beginning and end of the sealing groove 1111 are connected. This allows the portion of the sealing gasket 1212 that is squeezed into the sealing groove 1111 to be uninterrupted, resulting in a better sealing effect.

[0039] A mounting groove 1211 is provided on the second crimping part 121. Part of the mounting groove 1211 corresponds vertically to the first crimping part 111. The sealing gasket 1212 is installed in the mounting groove 1211. When the first crimping part 111 and the second crimping part 121 are crimped, the sealing gasket 1212 protrudes and is partially squeezed by the first crimping part 111. Specifically, the sealing gasket 1212 is divided into an outer ring and an inner ring. The outer ring is squeezed by the first crimping part 111 and will be squeezed into the sealing groove 1111.

[0040] In this embodiment, the upper end of the sealing gasket 1212 has a free portion 12121 that is not abutted by the first pressing portion 111. According to the above division of the sealing gasket 1212, the inner ring portion is the free portion 12121.

[0041] In this embodiment, the pump head structure 1 includes a diaphragm 13 disposed within the fluid chamber 11. The diaphragm 13 is provided with a sealing rib 131, which abuts against the free portion 12121 and compresses the free portion 12121 to deform. The sealing rib 131 compresses the free portion 12121, causing the free portion 12121 to deform, so that the sealing rib 131 is embedded in the free portion 12121.

[0042] Specifically, the sealing rib 131 includes a first sealing sidewall, a second sealing sidewall, and a sealing top wall. The free portion 12121 wraps around the sealing rib 131, meaning that the free portion 12121 abuts against the first sealing sidewall, the second sealing sidewall, and the sealing top wall respectively. This results in a better sealing effect.

[0043] like Figures 3 to 7 As shown, the pump head structure includes multiple piston structures 22, each of which is disposed on the diaphragm 13 and located in one of the diaphragm chambers 31.

[0044] The piston structure 22 includes a piston 221, a sealing ring 21, and a screw 222. The sealing ring includes a sealing ring body 211, the bottom wall of which protrudes downward to form a first sealing ring 212. The outer wall of the first sealing ring 212 is a sloped wall. The piston 221 is provided with a first sealing groove 2211. The bottom groove of the first sealing groove 2211 is provided with a second sealing groove 2212. The bottom wall of the second sealing groove 2212 is provided with a first through hole 2213. The shank of the screw 222 passes through the inner wall of the sealing ring body 211 and the first through hole 2213. The sealing ring body 211 is sandwiched between the piston 221 and the head of the screw 222. The bottom wall of the sealing ring body 211 abuts against the first sealing groove 2211. The outer wall of the first sealing ring 212 abuts against the sloped wall of the second sealing groove 2212.

[0045] In this embodiment, the piston structure 22 is used in a booster pump.

[0046] The sealing ring body 211 is sandwiched between the piston and the head of the screw 222. The outer wall of the first sealing ring 212 is a sloping wall. Under the locking force of the screw 222, the first sealing ring 212 is completely filled along the sloping wall of the second sealing groove 2212 in the gap between the piston 221 and the screw 222 to achieve a sealing effect, thus solving the problem that the sealing ring between the screw and the piston in the existing booster pump is prone to failure.

[0047] In this embodiment, the top wall of the sealing ring body 211 protrudes upward to form a second sealing ring 213, which abuts against the head of the screw 222. Depending on the degree of tightening of the screw 222 and the piston 221, the degree of compression of the second sealing ring 213 varies; it can be that only the second sealing ring 213 abuts against the head of the screw 222, or it can be that the sealing ring body 211 and the first sealing ring 212 both abut against the head of the screw 222.

[0048] In this embodiment, the inner walls of the sealing ring body 211, the first sealing ring 212, and the second sealing ring 213 are concentric circles and of the same size. That is, the inner walls of the sealing ring body 211, the first sealing ring 212, and the second sealing ring 213 are of the same size, which is compatible with the size of the screw shank 222.

[0049] In this embodiment, the outer wall of the second sealing ring 213 is a beveled wall. The first sealing ring 212 and the second sealing ring 213 have the same structure, so there is no need to distinguish the upper and lower positions of the sealing ring 21 during installation.

[0050] The pump head structure includes a piston bracket 14, which has a threaded hole. The shaft of the screw 222 passes through the inner ring wall of the sealing ring body 211, the first through hole 2213, the second through hole, and is connected to the threaded hole.

[0051] In this embodiment, the number of the plurality of diaphragm chambers 31 is six, and the six diaphragm chambers 41 are evenly arranged around each other.

[0052] Example 2

[0053] like Figures 1 to 7 As shown in the figure, this utility model embodiment also provides a booster pump, including a pump base and a pump head structure, wherein the pump head structure is connected to the pump base.

[0054] In this embodiment, the booster pump is used in a water purifier.

[0055] A pump head structure 1 includes a fluid chamber 11, a diaphragm chamber assembly 3, a diaphragm 13, and a support 12. The bottom of the fluid chamber 11 is provided with a first pressing part 111, and the pressing part is provided with a sealing groove 1111. The top of the support 12 is provided with a second pressing part 121, and the second pressing part 121 is provided with a mounting groove 1211. The mounting groove 1211 is provided with a sealing gasket 1212, and the upper end of the sealing gasket 1212 protrudes from the mounting groove 1211. The first pressing part 111 and the second pressing part 121 are pressed together so that the sealing gasket 1212 is partially squeezed into the sealing groove 1111. The diaphragm 13 and the diaphragm chamber assembly 3 are sandwiched between the fluid chamber 11 and the support 12, and the diaphragm 13 and the diaphragm chamber assembly 3 form a plurality of diaphragm chambers 31.

[0056] The fluid chamber 11 and the bracket 12 are connected by pressing the first pressing part 111 and the second pressing part 121. A sealing gasket 1212 is provided on the second pressing part 121. The sealing gasket 1212 is squeezed by the first pressing part 111. The first pressing part 111 is provided with a sealing groove 1111. The sealing gasket 1212 will be embedded in the sealing groove 1111 due to the compression deformation. This has a better sealing effect and solves the problem of poor sealing effect between the fluid chamber and the bracket in the existing booster pump.

[0057] In this embodiment, the newly added sealing groove 1111 is not used to install and fix the sealing gasket 1212, but is used to deform the sealing gasket 1212 during crimping so that it is squeezed into the sealing groove 1111.

[0058] Specifically, the shape of the sealing groove 1111 is not limited; it can be rectangular, arc-shaped, or irregular.

[0059] In this embodiment, the sealing groove 1111 includes a first sidewall, a second sidewall, and a bottom wall. The two sides of the bottom wall are respectively connected to the first sidewall and the second sidewall, thereby forming the sealing groove 1111.

[0060] In this embodiment, the width of the sealing groove 1111 is smaller than the width of the sealing gasket 1212, so that the sealing gasket 1212 can fill the sealing groove 1111 in the width direction, thereby increasing the sealing performance.

[0061] Specifically, the sealing gasket 1212 abuts against the first pressing part 111 and is squeezed into the sealing groove 1111, and abuts against the first side wall, the second side wall and the bottom wall respectively.

[0062] In some embodiments, the sealing gasket 1212 abuts against the first pressing portion 111 and is squeezed into the sealing groove 1111. The portion squeezed into the sealing groove 1111 abuts against the first sidewall and the second sidewall respectively, but does not contact the bottom wall. This also achieves a good sealing effect. Of course, depending on the irregular distribution of the upper part of the sealing gasket 1212, the portion squeezed into the sealing groove 1111 may only abut against the first sidewall or the second sidewall, which can also achieve a sealing effect.

[0063] In this embodiment, the sealing groove 1111 is arranged continuously around the internal space of the fluid chamber 11. The sealing groove 1111 is arranged around the fluid chamber 11, and the beginning and end of the sealing groove 1111 are connected. This allows the portion of the sealing gasket 1212 that is squeezed into the sealing groove 1111 to be uninterrupted, resulting in a better sealing effect.

[0064] A mounting groove 1211 is provided on the second crimping part 121. Part of the mounting groove 1211 corresponds vertically to the first crimping part 111. The sealing gasket 1212 is installed in the mounting groove 1211. When the first crimping part 111 and the second crimping part 121 are crimped, the sealing gasket 1212 protrudes and is partially squeezed by the first crimping part 111. Specifically, the sealing gasket 1212 is divided into an outer ring and an inner ring. The outer ring is squeezed by the first crimping part 111 and will be squeezed into the sealing groove 1111.

[0065] In this embodiment, the upper end of the sealing gasket 1212 has a free portion 12121 that is not abutted by the first pressing portion 111. According to the above division of the sealing gasket 1212, the inner ring portion is the free portion 12121.

[0066] In this embodiment, the pump head structure 1 includes a diaphragm 13 disposed within the fluid chamber 11. The diaphragm 13 is provided with a sealing rib 131, which abuts against the free portion 12121 and compresses the free portion 12121 to deform. The sealing rib 131 compresses the free portion 12121, causing the free portion 12121 to deform, so that the sealing rib 131 is embedded in the free portion 12121.

[0067] Specifically, the sealing rib 131 includes a first sealing sidewall, a second sealing sidewall, and a sealing top wall. The free portion 12121 wraps around the sealing rib 131, meaning that the free portion 12121 abuts against the first sealing sidewall, the second sealing sidewall, and the sealing top wall respectively. This results in a better sealing effect.

[0068] like Figures 3 to 7 As shown, the pump head structure includes multiple piston structures 22, each of which is disposed on the diaphragm 13 and located in one of the diaphragm chambers 31.

[0069] The piston structure 22 includes a piston 221, a sealing ring 21, and a screw 222. The sealing ring includes a sealing ring body 211, the bottom wall of which protrudes downward to form a first sealing ring 212. The outer wall of the first sealing ring 212 is a sloped wall. The piston 221 is provided with a first sealing groove 2211. The bottom groove of the first sealing groove 2211 is provided with a second sealing groove 2212. The bottom wall of the second sealing groove 2212 is provided with a first through hole 2213. The shank of the screw 222 passes through the inner wall of the sealing ring body 211 and the first through hole 2213. The sealing ring body 211 is sandwiched between the piston 221 and the head of the screw 222. The bottom wall of the sealing ring body 211 abuts against the first sealing groove 2211. The outer wall of the first sealing ring 212 abuts against the sloped wall of the second sealing groove 2212.

[0070] In this embodiment, the piston structure 22 is used in a booster pump.

[0071] The sealing ring body 211 is sandwiched between the piston and the head of the screw 222. The outer wall of the first sealing ring 212 is a sloping wall. Under the locking force of the screw 222, the first sealing ring 212 is completely filled along the sloping wall of the second sealing groove 2212 in the gap between the piston 221 and the screw 222 to achieve a sealing effect, thus solving the problem that the sealing ring between the screw and the piston in the existing booster pump is prone to failure.

[0072] In this embodiment, the top wall of the sealing ring body 211 protrudes upward to form a second sealing ring 213, which abuts against the head of the screw 222. Depending on the degree of tightening of the screw 222 and the piston 221, the degree of compression of the second sealing ring 213 varies; it can be that only the second sealing ring 213 abuts against the head of the screw 222, or it can be that the sealing ring body 211 and the first sealing ring 212 both abut against the head of the screw 222.

[0073] In this embodiment, the inner walls of the sealing ring body 211, the first sealing ring 212, and the second sealing ring 213 are concentric circles and of the same size. That is, the inner walls of the sealing ring body 211, the first sealing ring 212, and the second sealing ring 213 are of the same size, which is compatible with the size of the screw shank 222.

[0074] In this embodiment, the outer wall of the second sealing ring 213 is a beveled wall. The first sealing ring 212 and the second sealing ring 213 have the same structure, so there is no need to distinguish the upper and lower positions of the sealing ring 21 during installation.

[0075] The pump head structure includes a piston bracket 14, which has a threaded hole. The shaft of the screw 222 passes through the inner ring wall of the sealing ring body 211, the first through hole 2213, the second through hole, and is connected to the threaded hole.

[0076] In this embodiment, the number of the plurality of diaphragm chambers 31 is six, and the six diaphragm chambers 41 are evenly arranged around each other.

[0077] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pump head structure, characterized by, The pump head structure comprises a fluid chamber, a diaphragm chamber assembly, a diaphragm and a bracket, the bottom of the fluid chamber is provided with a first crimping part, the crimping part is provided with a sealing groove, the top of the bracket is provided with a second crimping part, the second crimping part is provided with a mounting groove, the mounting groove is provided with a sealing washer, the upper end of the sealing washer protrudes out of the mounting groove, the first crimping part is crimped with the second crimping part to make the sealing washer partially extrude into the sealing groove, the diaphragm and the diaphragm chamber assembly are clamped between the fluid chamber and the bracket, and the diaphragm and the diaphragm chamber assembly form a plurality of diaphragm chambers. The pump head structure comprises a plurality of piston structures, each of the piston structures is arranged on the diaphragm and located in one of the diaphragm chambers. The piston structure comprises a piston, a sealing washer and a screw, the sealing washer comprises a sealing washer body, the bottom wall of the sealing washer body protrudes downward to form a first sealing washer, the outer wall of the first sealing washer is a bevel wall, the piston is provided with a first sealing groove, the groove bottom of the first sealing groove is provided with a second sealing groove, the groove bottom wall of the second sealing groove is provided with a first through hole, the diaphragm is provided with a second through hole, the rod body of the screw passes through the inner wall of the sealing washer body, the first through hole and the second through hole, the sealing washer body is clamped between the piston and the head of the screw, the bottom wall of the sealing washer body abuts against the first sealing groove, and the outer wall of the first sealing washer abuts against the bevel wall of the second sealing groove. The top wall of the sealing washer body protrudes upward to form a second sealing washer, and the second sealing washer is used for abutting against the head of the screw.

2. The pump head structure of claim 1, wherein The upper end of the sealing washer has a free part which is not abutted by the first crimping part, the diaphragm is provided with a sealing rib, the sealing rib abuts against the free part and extrudes the free part to deform.

3. The pump head structure of claim 1, wherein The sealing groove is arranged without interruption around the internal space of the fluid chamber.

4. The pump head structure of claim 1, wherein The outer wall of the second sealing washer is a bevel wall.

5. The pump head structure of claim 1, wherein The pump head structure comprises a piston bracket, the piston bracket is provided with a threaded hole, the rod body of the screw passes through the inner wall of the sealing washer body, the first through hole, the second through hole and the threaded hole to be connected.

6. The pump head structure of claim 1, wherein The number of the plurality of diaphragm chambers is six, and the six diaphragm chambers are arranged uniformly.

7. A booster pump characterized by The pump head structure comprises the pump head structure according to any one of claims 1-6. The pump head structure comprises the pump head structure according to any one of claims 1-6.

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