Booster pump

Abstract

The utility model discloses a booster pump, which relates to the technical field of booster pumps, and comprises a transmission component, a piston valve seat, a pump head, a diaphragm, a piston push block, an inner ring sealing rib and an outer ring sealing rib, the piston valve seat is in transmission connection with the transmission component, the pump head is arranged on the transmission component, and a water inlet and a water outlet are arranged on the pump head. The diaphragm is installed on the side, facing the transmission assembly, of the pump head, the diaphragm and the pump head define a booster cavity, the water inlet and the water outlet are both communicated with the booster pump, an installation through hole is formed in the diaphragm, the piston push block penetrates through the installation through hole through a connecting piece to be connected to the piston valve seat, and the transmission assembly drives the piston push block to move through the piston valve seat. The inner ring sealing rib and the outer ring sealing rib are arranged on the side, facing the diaphragm, of the piston valve seat and / or the side, facing the piston valve seat, of the diaphragm. According to the technical scheme, the sealing effect of the joint of the diaphragm and the piston valve seat is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of booster pumps, in particular to a booster pump. Background Art

[0002] The main principle of the booster pump is to increase the pressure at the water outlet on the pump body by driving the diaphragm and the piston on the diaphragm through the driving structure. However, due to the high pressure of the water flow during operation of the existing booster pump, leakage is prone to occur at the connection between the diaphragm and the piston of the booster pump when it is under high pressure, which causes water to flow into the motor of the booster pump, thereby reducing the service life of the booster pump. Utility Model Content

[0003] The main purpose of the utility model is to provide a booster pump, aiming to improve the sealing effect of the connection between the diaphragm and the piston valve seat.

[0004] In order to achieve the above-mentioned purpose, the booster pump proposed by the utility model comprises:

[0005] Transmission components;

[0006] A piston valve seat, the piston valve seat being drivingly connected to the transmission assembly;

[0007] A pump head, the pump head is mounted on the transmission assembly, and the pump head is provided with a water inlet and a water outlet;

[0008] A diaphragm, the diaphragm is installed on a side of the pump head facing the transmission assembly and encloses the pump head to form a booster chamber, the water inlet and the water outlet are both connected to the booster pump, and the diaphragm is provided with a mounting through hole;

[0009] A piston push block, wherein the piston push block is connected to the piston valve seat through the mounting through hole via a connecting piece, and the transmission assembly drives the piston push block to move through the piston valve seat to adjust the volume of the boost chamber; and

[0010] The inner ring sealing rib and the outer ring sealing rib are respectively arranged on the side of the piston valve seat facing the diaphragm and / or the side of the diaphragm facing the piston valve seat.

[0011] In one embodiment, the free ends of the inner ring sealing rib and the outer ring sealing rib are arranged in an arc shape.

[0012] In one embodiment, the diaphragm has a positioning protrusion on one side facing the piston valve seat, and the piston valve seat has a positioning groove on one side facing the diaphragm, the positioning protrusion is positioned in the positioning groove, and the inner ring sealing rib and the outer ring sealing rib are both spaced apart on the groove wall of the positioning groove.

[0013] In one embodiment, the height of the outer ring sealing rib is h1, the height of the inner ring sealing rib is h2, and h1>h2.

[0014] In one embodiment, the height of the outer ring sealing rib is h1, and the shortest distance between the outer peripheral wall of the outer ring sealing rib and the side wall of the positioning groove is s, s>h1.

[0015] In one embodiment, the bottom wall of the positioning groove includes a first step and a second step, the second step is arranged on the outer circumferential surface of the first step, and the first step is lower than the second step, the outer ring sealing rib is arranged on the second step, and the inner ring sealing rib is arranged on the first step.

[0016] In one embodiment, the height of the outer ring sealing rib is h1, the height of the inner ring sealing rib is h2, and h1=h2.

[0017] In one embodiment, the outer ring sealing rib, the second step and the first step form a water storage groove.

[0018] In one embodiment, the pump head includes a pump head seat and a pump head cover, the pump head seat is installed on the transmission assembly, the pump head cover is installed on the side of the pump head seat away from the transmission assembly, and the diaphragm is clamped and fixed between the pump head cover and the pump head seat.

[0019] In one embodiment, one of the sides facing each other of the piston push block and the diaphragm is provided with a limiting column, and the other one is provided with a limiting groove. When the piston push block is connected to the piston valve seat, the limiting column is limited in the limiting groove.

[0020] The booster pump in the technical solution of the utility model comprises a transmission assembly, a piston valve seat, a pump head, a diaphragm, a piston push block, an inner ring sealing rib and an outer ring sealing rib, the piston valve seat is transmission-connected to the transmission assembly, the pump head is mounted on the transmission assembly, a water inlet and a water outlet are arranged on the pump head, the diaphragm is mounted on the side of the pump head facing the transmission assembly, and is enclosed with the pump head to form a booster chamber, the water inlet and the water outlet are both connected to the booster pump, a mounting through hole is arranged on the diaphragm, the piston push block is connected to the piston valve seat through the mounting through hole through a connecting piece, and the transmission assembly drives the piston push block to move through the piston valve seat to adjust The volume of the boost chamber is increased, thereby increasing the pressure of water at the water outlet; further, the inner ring sealing rib and the outer ring sealing rib are respectively arranged on the side of the piston valve seat facing the diaphragm and / or the side of the diaphragm facing the piston valve seat. When the piston push block is fixed to the piston valve seat, the inner ring sealing rib and the outer ring sealing rib are both sealed against the periphery of the mounting through hole. By simultaneously arranging the outer ring sealing rib and the inner ring sealing rib between the piston valve seat and the diaphragm, the sealing effect of the connection between the diaphragm and the piston valve seat is improved, thereby reducing the possibility of leakage of the boost pump, thereby improving the safety and service life of the boost pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of an embodiment of a booster pump provided by the utility model;

[0023] Figure 2 for Figure 1 A cross-sectional view from one perspective;

[0024] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0025] Figure 4 for Figure 1 Bottom view of the middle diaphragm;

[0026] Figure 5 for Figure 4 A cross-sectional view from one perspective;

[0027] Figure 6 for Figure 5 It is a local enlarged view of point B;

[0028] Figure 7 for Figure 1 Schematic diagram of the structure of the middle piston valve seat;

[0029] Figure 8 for Figure 7 A cross-sectional view of

[0030] Fig. 9 for Figure 8 A partial enlarged view of point C in the middle;

[0031] Fig.10 for Fig. 9 A partial enlarged view of point D in the middle;

[0032] Fig.11 for Figure 1 A schematic diagram of the structure of the middle diaphragm from another perspective;

[0033] Fig.12 for Figure 1 Schematic diagram of the structure of the middle piston push block.

[0034] Description of Figure Numbers:

[0035] 1. Pump head; 11. Water inlet; 12. Water outlet; 13. Pressurization chamber; 2. Piston valve seat; 21. Inner ring sealing rib; 22. Outer ring sealing rib; 23. Positioning groove; 231. First step; 232. Second step; 24. Water storage tank; 3. Diaphragm; 31. Mounting through hole; 34. Limiting column; 35. Positioning protrusion; 4. Piston push block; 45. Limiting groove; 5. Connecting piece.

[0036] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0040] Reference Figures 1 to 3 The utility model provides a booster pump, comprising:

[0041] Transmission components;

[0042] A piston valve seat 2, wherein the piston valve seat 2 is drivingly connected to the transmission assembly;

[0043] A pump head 1, wherein the pump head 1 is mounted on the transmission assembly and is provided with a water inlet 11 and a water outlet 12;

[0044] The diaphragm 3 is installed on the side of the pump head 1 facing the transmission assembly, and is enclosed with the pump head 1 to form a booster chamber 13. The water inlet 11 and the water outlet 12 are both connected to the booster pump, and the diaphragm 3 is provided with a mounting through hole 31;

[0045] A piston push block 4, wherein the piston push block 4 is connected to the piston valve seat 2 through the mounting through hole 31 via a connecting member 5, and the transmission assembly drives the piston push block 4 to move through the piston valve seat 2 to adjust the volume of the boost chamber 13; and

[0046] The inner ring sealing rib 21 and the outer ring sealing rib 22 are respectively arranged on the side of the piston valve seat 2 facing the diaphragm 3 and / or the side of the diaphragm 3 facing the piston valve seat 2.

[0047] The booster pump in the technical solution of the utility model comprises a transmission assembly, a piston valve seat 2, a pump head 1, a diaphragm 3, a piston push block 4, an inner ring sealing rib 21 and an outer ring sealing rib 22, the piston valve seat 2 is transmission-connected to the transmission assembly, the pump head 1 is mounted on the transmission assembly, a water inlet 11 and a water outlet 12 are provided on the pump head 1, the diaphragm 3 is mounted on the side of the pump head 1 facing the transmission assembly, and is enclosed with the pump head 1 to form a booster chamber 13, the water inlet 11 and the water outlet 12 are both connected to the booster pump, a mounting through hole 31 is provided on the diaphragm 3, the piston push block 4 is connected to the piston valve seat 2 through the mounting through hole 31 via a connector 5, and the transmission assembly drives the piston push block 4 to move via the piston valve seat 2 , to adjust the volume of the boost chamber 13, thereby increasing the pressure of the water outflowing from the water outlet 12; further, the inner ring sealing rib 21 and the outer ring sealing rib 22 are respectively arranged on the side of the piston valve seat 2 facing the diaphragm 3 and / or the side of the diaphragm 3 facing the piston valve seat 2. When the piston push block 4 is fixed to the piston valve seat 2, the inner ring sealing rib 21 and the outer ring sealing rib 22 are both sealed against the periphery of the mounting through hole 31. By simultaneously arranging the outer ring sealing rib 22 and the inner ring sealing rib 21 between the piston valve seat 2 and the diaphragm 3, the sealing effect of the connection between the diaphragm 3 and the piston valve seat 2 is improved, thereby reducing the possibility of leakage of the boost pump, thereby improving the safety and service life of the boost pump.

[0048] In one embodiment, the free ends of the inner ring sealing rib 21 and the outer ring sealing rib 22 are arranged in an arc shape. The inner ring sealing rib 21 and the outer ring sealing rib 22 are arranged in an arc shape toward one end of the diaphragm 3, that is, it can be understood that the diaphragm 3 is made of a flexible material or an elastic material, so the diaphragm 3 is deformed after being squeezed by the inner ring sealing rib 21 and the outer ring sealing rib 22. Therefore, the contact surface between the inner ring sealing rib 21 and the outer ring sealing rib 22 and the diaphragm 3 after the arc setting is larger, and the sealing effect is better. At the same time, when the arc-shaped sealing rib is subjected to pressure, it can distribute the pressure more evenly on the entire contact surface, thereby avoiding sealing failure caused by excessive local pressure. If the corners of the sealing rib are set to right angles, the stress is mainly concentrated at the corners, which easily causes the diaphragm 3 to be damaged; therefore, the arc-shaped sealing rib also increases the service life of the diaphragm 3.

[0049] Reference Figures 3 to 6 In one embodiment, the diaphragm 3 has a positioning protrusion 35 on one side facing the piston valve seat 2, and the piston valve seat 2 has a positioning groove 23 on one side facing the diaphragm 3, and the positioning protrusion 35 is positioned in the positioning groove 23, and the inner ring sealing rib 21 and the outer ring sealing rib 22 are both spaced apart on the groove wall of the positioning groove 23. On the one hand, by providing the positioning protrusion 35 and the positioning groove 23, the piston valve seat 2 and the diaphragm 3 can be well limited and fixed, which can facilitate the installation of the piston valve seat 2, prevent the piston valve seat 2 from being installed in the wrong position, and improve the installation efficiency of the user; at the same time, it can also prevent the valve seat push block from deviating from the predetermined position, thereby improving the stability of the piston push block 4. On the other hand, by providing the positioning protrusion 35 and the positioning groove 23, the water flow path is also increased, thereby increasing the sealing effect between the piston valve seat 2 and the diaphragm 3; at the same time, by providing the positioning groove 23, the top surface and the bottom wall of the positioning groove 23 form two high and low surfaces, which can effectively block the possibility of water leakage from the installation gap between the piston valve seat 2 and the diaphragm 3, thereby improving the sealing between the piston valve seat 2 and the diaphragm 3, thereby reducing the risk of water intrusion into the motor, thereby improving the safety, reliability and service life of the booster pump.

[0050] In one embodiment, the height of the outer ring sealing rib 22 is h1, and the shortest distance between the outer peripheral wall of the outer ring sealing rib 22 and the side wall of the positioning groove 23 is s, s>h1. It can be understood that the outer ring sealing rib 22 and / or the inner ring sealing rib 21 can be made of a flexible material or a hard material; when the outer ring sealing rib 22 is made of a flexible material, when the piston valve seat 2 is sealed and installed on the diaphragm 3, the outer ring sealing rib 22 will be deformed under a large pressure, and if sh1, the sealing effect between the piston valve seat 2 and the diaphragm 3 is increased, thereby reducing the possibility of water leakage into the motor, thereby improving the stability, reliability and service life of the motor.<h1>

[0051] Reference Figures 7 to 9 In one embodiment, the bottom wall of the positioning groove 23 includes a first step 231 and a second step 232, the second step 232 is arranged around the outer circumference of the first step 231, and the end surface of the first step 231 is lower than the end surface of the second step 232, the outer ring sealing rib 22 is arranged on the second step 232, and the inner ring sealing rib 21 is arranged on the first step 231. By arranging the outer ring sealing rib 22 and the inner ring sealing rib 21 on two planes with different heights, on the one hand, the path between the outer ring sealing rib 22 and the inner ring sealing rib 21 is increased, so that even if the water flow infiltrates from the outer ring sealing rib 22, the water flow path between the outer ring sealing rib 22 and the inner ring sealing rib 21 can be increased, thereby increasing the sealing effect; at the same time, the path between the outer ring sealing rib 22 and the inner ring sealing rib 21 is increased, that is, the contact area between the positioning protrusion 35 and the positioning groove 23 is increased, thereby improving the sealing effect between the piston valve seat 2 and the diaphragm 3. On the other hand, the second step 232 with a relatively high height also plays a certain role in blocking water, thereby further increasing the sealing effect between the piston valve seat 2 and the diaphragm 3 .

[0052] Specifically, the height of the outer ring sealing rib 22 is h1, and the height of the inner ring sealing rib 21 is h2, where h1 = h2. Thus, the height of the outer ring sealing rib 22 is always higher than the height of the inner ring sealing rib 21, thereby improving the sealing effect between the piston valve seat 2 and the diaphragm 3, and further improving the stability, reliability and service life of the motor.

[0053] In another embodiment, the inner ring sealing rib 21 and the outer ring sealing rib 22 are both spaced apart on the groove wall of the positioning groove 23, the height of the outer ring sealing rib 22 is h1, and the height of the inner ring sealing rib 21 is h2, and h1>h2. By setting the outer ring sealing rib 22 and the inner ring sealing rib 21 as two sealing ribs with different heights, and the height of the outer ring sealing rib 22 is higher than the height of the inner ring sealing rib 21, even if water flows from the inner ring sealing rib 21 to the outer ring sealing rib 22, the outer ring sealing rib 22 can use the height difference with the inner ring sealing rib 21 to resist part of the water flow, thereby increasing the sealing effect between the piston valve seat 2 and the diaphragm 3, thereby improving the stability, reliability and service life of the motor.

[0054] In one embodiment, the outer ring sealing rib 22, the second step 232 and the first step 231 form a water storage groove 24. It can be understood that by providing the water storage groove 24, even if a small amount of water leaks from the inner ring sealing rib 21 to between the outer ring sealing rib 22 and the inner ring sealing rib 21, the water storage groove 24 can also play a certain role in storing water, thereby reducing the impact and leakage of water flow on the outer ring sealing rib 22, thereby improving the sealing effect between the piston valve seat 2 and the diaphragm 3, and thereby improving the stability, reliability and service life of the motor.

[0055] Reference Fig.11 and Fig.12 In one embodiment, one of the sides of the piston push block 4 and the diaphragm 3 facing each other is provided with a limiting column 34, and the other side is provided with a limiting groove 45, and the limiting column 34 is limited to the limiting groove 45. The limiting column 34 and the limiting groove 45 can play a foolproof role on the one hand, so that the user can install the limiting column 34 at the correct position according to the correct angle, thereby facilitating the user's installation and fixation; they can also play a role in circumferentially limiting the piston push block 4, thereby improving the stability and reliability of the connection between the piston push block 4 and the diaphragm 3, thereby reducing the possibility of wear between the piston push block 4 and the diaphragm 3, thereby improving the service life of the diaphragm 3, improving the sealing effect between the piston push block 4 and the diaphragm 3, and reducing the possibility of water flowing into the motor from between the piston push block 4 and the diaphragm 3, thereby improving the safety, stability and service life of the motor.

[0056] In one embodiment, the pump head 1 includes a pump head 1 seat and a pump head 1 cover. When the pump head 1 seat is installed on the mounting bracket, the pump head 1 cover is installed on the side of the pump head 1 seat away from the mounting bracket. The diaphragm 3 is clamped and fixed between the pump head 1 cover and the pump head 1 seat. The water inlet 11 and the water outlet 12 are provided on the pump head 1 cover. By providing the pump head 1 seat and the pump head 1 cover, the internal disassembly and maintenance of the pump head 1 are facilitated, thereby improving the service life of the booster pump.

[0057] Furthermore, the booster pump also includes a piston valve cover and a piston valve plate. The piston valve cover is installed on the side of the diaphragm 3 facing the pump head 1 cover, and the piston valve cover is located between the diaphragm 3 and the pump head 1 cover. The piston valve plate is movably installed on the piston valve cover. There are multiple piston valve plates, and a piston valve plate is arranged opposite to a piston push block 4. The piston valve cover is provided with multiple water inlet valve ports and multiple water outlet valve ports. The water inlet valve port is connected to the water inlet 11, and the water outlet valve port is connected to the water outlet 12. A piston valve plate corresponds to at least one water inlet valve port, and the piston valve cover and the diaphragm 3 enclose the booster chamber 13.

[0058] The eccentric wheel is connected to the output shaft of the motor by transmission, and the eccentric wheel is connected to the piston valve seat 2 by rotation through the bearing. The operating principle of the booster pump is as follows: the motor drives the eccentric wheel to rotate, and the eccentric wheel drives the piston valve seat 2 and the piston push block 4 to move up and down. When in the suction process, the piston push block 4 and the piston valve seat 2 drive the diaphragm 3 to move down, and the volume of the booster chamber 13 becomes larger, thereby forming a negative pressure area, so that the water flow at the water inlet 11 flows into the booster chamber 13 through the corresponding water inlet valve port. When in the discharge process, the piston push block 4 and the piston valve seat 2 drive the diaphragm 3 to move up, and the volume of the booster chamber 13 becomes smaller, so that the water in the booster chamber 13 is pressurized and discharged through the water outlet valve port and the water outlet 12 in turn under the action of pressure.

[0059] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A booster pump, characterized in that: include: Transmission components; A piston valve seat, the piston valve seat being drivingly connected to the transmission assembly; A pump head, the pump head is mounted on the transmission assembly, and the pump head is provided with a water inlet and a water outlet; A diaphragm, the diaphragm is installed on a side of the pump head facing the transmission assembly and encloses the pump head to form a booster chamber, the water inlet and the water outlet are both connected to the booster pump, and the diaphragm is provided with a mounting through hole; A piston push block, wherein the piston push block is connected to the piston valve seat through the mounting through hole via a connecting piece, and the transmission assembly drives the piston push block to move through the piston valve seat to adjust the volume of the boost chamber; and The inner ring sealing rib and the outer ring sealing rib are respectively arranged on the side of the piston valve seat facing the diaphragm and / or the side of the diaphragm facing the piston valve seat.

2. The booster pump according to claim 1, characterized in that: The free ends of the inner ring sealing rib and the outer ring sealing rib are arranged in an arc shape.

3. The booster pump according to claim 1, characterized in that: The diaphragm has a positioning protrusion on one side facing the piston valve seat, and the piston valve seat has a positioning groove on one side facing the diaphragm. The positioning protrusion is positioned in the positioning groove, and the inner ring sealing rib and the outer ring sealing rib are both spaced apart on the groove wall of the positioning groove.

4. The booster pump according to claim 3, characterized in that: The height of the outer ring sealing rib is h1, and the height of the inner ring sealing rib is h2, where h1>h2.

5. The booster pump according to claim 3, characterized in that: The height of the outer ring sealing rib is h1, and the shortest distance between the outer peripheral wall of the outer ring sealing rib and the side wall of the positioning groove is s, s>h1.

6. The booster pump according to claim 3, characterized in that: The bottom wall of the positioning groove includes a first step and a second step, the second step is arranged on the outer circumferential surface of the first step, and the first step is lower than the second step, the outer ring sealing rib is arranged on the second step, and the inner ring sealing rib is arranged on the first step.

7. The booster pump according to claim 6, characterized in that: The height of the outer ring sealing rib is h1, and the height of the inner ring sealing rib is h2, where h1=h2.

8. The booster pump according to claim 6, characterized in that: The outer ring sealing rib, the second step and the first step form a water storage groove.

9. The booster pump according to claim 1, characterized in that: The pump head comprises a pump head seat and a pump head cover, wherein the pump head seat is mounted on the transmission assembly, the pump head cover is mounted on a side of the pump head seat away from the transmission assembly, and the diaphragm is clamped and fixed between the pump head cover and the pump head seat.

10. The booster pump according to claim 1, characterized in that: One of the sides of the piston push block and the diaphragm facing each other is provided with a limiting column, and the other one is provided with a limiting groove. When the piston push block is connected to the piston valve seat, the limiting column is limited in the limiting groove.

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