Diaphragm pump and water purifier
By using a connector that passes through the balance wheel and connects to the piston in the diaphragm pump, the problem of iron filings contaminating the medium during screw installation is solved, thereby improving the cleanliness of the medium and production efficiency.
Patent Information
- Application Number
- CN202521982966.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-15
AI Technical Summary
Iron filings generated during the screw installation process in existing diaphragm pumps can easily contaminate the transported medium, especially in applications with high cleanliness requirements such as water dispensers and water purifiers, affecting water quality and safety.
A connector that passes through the balance wheel is used to connect to the piston, and the diaphragm is held between the balance wheel and the piston. This avoids the connector from contacting the pump medium inside the pump chamber. At the same time, the piston and diaphragm can be manufactured separately, reducing production costs.
It effectively prevents contamination of the medium by the connectors, improves assembly stability and production efficiency, and reduces costs.
Smart Images
Figure CN224679654U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of positive displacement pumps, and in particular relates to a diaphragm pump and a water purifier. Background Technology
[0002] A diaphragm pump is a positive displacement pump that uses the reciprocating motion of a diaphragm within the pump chamber to change the chamber volume, thereby achieving the intake and discharge of fluids. The core components of a diaphragm pump include the diaphragm, a swing arm, and a piston. The swing arm and piston are respectively arranged on both sides of the diaphragm. The diaphragm has piston mounting holes. During assembly, screws are passed through the mounting holes of the piston and diaphragm in sequence and then connected to the swing arm, thereby fixing the piston to the swing arm.
[0003] Currently, the screws used for fastening in existing diaphragm pumps typically require the use of screwdrivers or similar tools for installation. However, during the actual tightening process, friction between the screwdriver tip and the screwdriver groove (such as a Phillips head) can easily generate iron filings. If these iron filings are not completely removed and remain inside the pump chamber, they will come into contact with the pumped medium, causing oxidation and rust, thereby contaminating the pumped medium and leading to a decline in water quality. In applications where high cleanliness is required, such as water dispensers and water purifiers, residual iron filings can directly endanger the hygiene and safety of the water. Utility Model Content
[0004] In view of this, it is necessary to provide a diaphragm pump and water purifier that can solve the above-mentioned technical problems.
[0005] To solve the above-mentioned technical problems, this application provides the following technical solution:
[0006] A diaphragm pump, comprising:
[0007] One-way valve mounting base;
[0008] A diaphragm abuts and seals against the one-way valve fixing seat, and a pump chamber is formed between the diaphragm and the one-way valve fixing seat;
[0009] A piston is disposed corresponding to the pump chamber and independently relative to the diaphragm, and the piston portion is disposed within the corresponding pump chamber and abuts and seals against the diaphragm;
[0010] A swing frame is movably disposed on the side of the diaphragm away from the one-way valve fixing seat. The swing frame includes a swing wheel, which is correspondingly disposed with the piston and abuts and seals against the diaphragm. The swing wheel is also connected to the corresponding piston for driving the piston to reciprocate relative to the one-way valve fixing seat in order to control the volume change of the pump chamber.
[0011] A connector is provided corresponding to the balance wheel, and after passing through the corresponding balance wheel, the connector is inserted into the corresponding piston and connected to the corresponding piston, for fixing the piston to the corresponding balance wheel.
[0012] It is understandable that a connector passing through the balance wheel is used to connect to the piston, and the diaphragm is held between the balance wheel and the piston. This avoids the connector from contacting the medium being transported in the pump chamber, ensuring that the connector does not affect the medium being transported in the pump chamber. On the other hand, the piston and diaphragm can be manufactured separately, which facilitates production and reduces costs.
[0013] In one embodiment, the diaphragm has a through hole, the through hole is corresponding to the piston, and the piston is inserted into the corresponding balance wheel after passing through the corresponding through hole;
[0014] In the circumferential direction of the piston, the piston can abut and limit the corresponding balance wheel.
[0015] Understandably, the plug-in connection between the piston and the balance wheel facilitates the assembly of the piston on the balance wheel and ensures the accuracy of the piston's position on the balance wheel. In addition, the piston and the balance wheel are stopped by the contact and limiting of the diaphragm in the circumferential direction, which effectively prevents relative rotation or slippage between the two, thereby avoiding piston displacement and improving the assembly stability between the piston and the balance wheel.
[0016] In one embodiment, the piston has an abutting plane in its circumferential direction, and the balance wheel has a mating plane in its circumferential direction;
[0017] When the piston is inserted into the balance wheel, the abutting surface is abutted against the mating surface.
[0018] In one embodiment, the connector is threaded to the piston.
[0019] Understandably, the connector passes through the balance wheel and is connected to the piston via a thread, which further facilitates the assembly of the piston on the balance wheel.
[0020] In one embodiment, the diaphragm pump further includes an eccentric wheel and a bearing, with the swing arm rotatably mounted on the eccentric wheel via the bearing;
[0021] The connector has a stop portion, which is located on the outside of the swing frame and abuts against and limits the bearing.
[0022] Understandably, by using the abutment part on the connector to abut and limit the bearing, it is possible to effectively prevent the bearing from slipping or shaking during the operation of the swing frame, thus ensuring the operational stability of the diaphragm pump.
[0023] In one embodiment, a sleeve portion is formed on the diaphragm, the sleeve portion being capable of simultaneously engaging with the piston and the corresponding balance wheel;
[0024] Furthermore, the piston is inserted into the corresponding balance wheel.
[0025] Understandably, the sleeves on the diaphragm are used to connect with the piston and the balance wheel respectively, and the piston is connected with the corresponding balance wheel. This facilitates the assembly of the piston and the balance wheel on the diaphragm and the piston on the balance wheel, and also ensures the accuracy of the assembly positions of the piston and the balance wheel on the diaphragm and the piston on the balance wheel.
[0026] In one embodiment, one end of the sleeve portion abuts and seals against the piston;
[0027] The diaphragm is further provided with sealing ribs, which are located around the sleeve portion and abut against the piston for sealing.
[0028] Understandably, the diaphragm achieves abutment and sealing with the piston through one end of the sleeve portion and the sealing rib. This not only facilitates the assembly and sealing between the diaphragm and the piston, but also forms a double-layer sealing structure between them, which can effectively prevent leakage of the conveyed medium.
[0029] In one embodiment, the other end of the sleeve portion abuts and seals against the balance wheel.
[0030] It is understandable that the diaphragm and the balance wheel are sealed by the contact between the sleeve portion on the diaphragm and the balance wheel, which facilitates the assembly and sealing between the diaphragm and the balance wheel.
[0031] In one embodiment, the number of pump chambers is set to five, and the five pump chambers are arranged sequentially at intervals along the circumferential direction of the diaphragm.
[0032] This application also claims protection for a water purifier, including the diaphragm pump described above.
[0033] Due to the application of the above solution, this application has the following advantages compared with the prior art:
[0034] The diaphragm pump and water purifier claimed in this application use a connector that passes through the balance wheel and is connected to the piston. The balance wheel and piston hold the diaphragm. This avoids contact between the connector and the medium being transported in the pump chamber, so that the connector will not affect the medium being transported in the pump chamber. On the other hand, the piston and diaphragm can be manufactured separately, which facilitates production and reduces costs. Attached Figure Description
[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0036] Figure 1 This is a schematic diagram of the structure of a diaphragm pump provided in an embodiment of this application.
[0037] Figure 2 This is a cross-sectional view of a diaphragm pump provided in an embodiment of this application.
[0038] Figure 3 for Figure 2 Enlarged view of the middle P section.
[0039] Figure 4 This is a schematic diagram of the structure of a display stand provided in one embodiment of this application.
[0040] Figure 5 This is a schematic diagram of a piston structure provided in an embodiment of this application.
[0041] Figure 6 This is a schematic diagram of the structure of a one-way valve mounting base provided in an embodiment of this application.
[0042] Figure 7 This is a schematic diagram of the structure of a diaphragm provided in an embodiment of this application.
[0043] Figure 8 This is a schematic diagram of the structure of a diaphragm provided in one embodiment of this application from another perspective.
[0044] Reference numerals: 100, diaphragm pump; 10, one-way valve mounting seat; 11, inlet hole group; 12, outlet hole group; 13, first diaphragm; 14, second diaphragm; 101, pump chamber; 20, diaphragm; 21, through hole; 22, sleeve part; 23, sealing rib; 30, piston; 31, abutting surface; 40, swing frame; 41, swing wheel; 411, mating surface; 50, connecting piece; 51, blocking part; 60, pump cover; 61, inlet pipe; 62, outlet pipe; 70, eccentric wheel; 80, bearing; 90, drive motor; 91, rotating shaft. Detailed Implementation
[0045] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0046] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.
[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0049] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.
[0050] The diaphragm pump 100 claimed in this application is used in water dispensers (not shown) and water purifiers (not shown).
[0051] like Figures 1 to 8 As shown, the diaphragm pump 100 claimed in this application includes a one-way valve mounting seat 10, a diaphragm 20, a piston 30, a swing arm 40, and a connector 50. The diaphragm 20 abuts and seals against the one-way valve mounting seat 10, and a pump chamber 101 is formed between the diaphragm 20 and the one-way valve mounting seat 10. The piston 30 is correspondingly disposed in the pump chamber 101 and is independently disposed relative to the diaphragm 20, and a portion of the piston 30 is disposed within the corresponding pump chamber 101 and abuts and seals against the diaphragm 20. The swing arm 40 is movably disposed on the diaphragm 20 away from the one-way valve mounting seat. On one side of the seat 10, the swing frame 40 includes a swing wheel 41, which is correspondingly arranged with the piston 30 and abuts and seals against the diaphragm 20. The swing wheel 41 is also connected to the corresponding piston 30 for driving the piston 30 to reciprocate relative to the one-way valve fixed seat 10, thereby controlling the volume change of the pump chamber 101. The connecting member 50 is correspondingly arranged with the swing wheel 41, and after passing through the corresponding swing wheel 41, the connecting member 50 is inserted into the corresponding piston 30 and connected to the corresponding piston 30 for fixing the piston 30 to the corresponding swing wheel 41.
[0052] As can be seen from the above, the diaphragm pump 100 of this application uses a connector 50 passing through the balance wheel 41 to connect with the piston 30, and the balance wheel 41 and the piston 30 clamp the diaphragm 20. In this way, on the one hand, the connector 50 is prevented from contacting the conveying medium (not shown) in the pump chamber 101, so that the setting of the connector 50 will not affect the conveying medium in the pump chamber 101; on the other hand, the piston 30 and the diaphragm 20 can be manufactured separately, which facilitates production and reduces costs.
[0053] like Figure 1 , Figure 2 As shown, in one embodiment, the diaphragm pump 100 includes a pump cover 60, which abuts and seals against the one-way valve mounting seat 10. The pump cover 60 has an inlet pipe 61 and an outlet pipe 62.
[0054] like Figure 1 , Figure 2As shown, in one embodiment, the one-way valve mounting base 10 is provided with an inlet hole group 11 and an outlet hole group 12. The inlet hole group 11 is connected to the inlet pipe 61, and the outlet hole group 12 is connected to the outlet pipe 62. Furthermore, a first diaphragm 13 is installed on the one-way valve mounting base 10. The first diaphragm 13 is positioned at the corresponding inlet hole group 11 and connected to the one-way valve mounting base 10, used to control the one-way flow of the corresponding inlet hole group 11. A second diaphragm 14 is also installed on the one-way valve mounting base 10. The second diaphragm 14 is positioned at the corresponding outlet hole group 12 and connected to the one-way valve mounting base 10, used to control the one-way flow of the corresponding outlet hole group 12. This ensures that when the diaphragm pump 100 of this embodiment is working, the medium in the inlet pipe 61 enters the pump chamber 101 through the inlet hole group 11, and the medium in the pump chamber 101 then flows through the outlet hole group 12 to the outlet pipe 62, and finally is discharged outwards through the outlet pipe 62.
[0055] like Figure 2 , Figure 7 As shown, in one embodiment, the number of pump chambers 101 is set to five, and the five pump chambers 101 are arranged sequentially at intervals along the circumferential direction of the diaphragm 20. It can be understood that in other embodiments, the number of pump chambers 101 may also be two, three, four, etc., and the specific number can be set according to actual usage requirements, which will not be elaborated here.
[0056] like Figure 3 , Figure 7 As shown, in one embodiment, a through hole 21 is provided on the diaphragm 20, and the through hole 21 is correspondingly provided with the piston 30. After passing through the corresponding through hole 21, the piston 30 is inserted and engaged with the corresponding balance wheel 41. In the circumferential direction of the piston 30, the piston 30 can abut and limit the corresponding balance wheel 41. That is to say, the diaphragm pump 100 of this embodiment can utilize the insertion and engagement between the piston 30 and the balance wheel 41 to facilitate the assembly of the piston 30 on the balance wheel 41 and ensure the accuracy of the assembly position of the piston 30 on the balance wheel 41. In addition, the piston 30 and the balance wheel 40 are abutted and limited in the circumferential direction of the diaphragm 20, so that when the connecting piece 50 passing through the balance wheel 41 is connected to the piston 30, the relative rotation or slippage between the two can be effectively prevented, thereby avoiding displacement of the piston 30 and improving the assembly stability between the piston 30 and the balance wheel 41.
[0057] like Figure 4 , Figure 5As shown, in one embodiment, the piston 30 has a contact surface 31 formed circumferentially, and the balance wheel 41 has a mating surface 411 formed circumferentially. When the piston 30 and the balance wheel 41 are engaged, the contact surface 31 and the mating surface 411 are abutted against each other. In this embodiment, the piston 30 has three spaced contact surfaces 31 circumferentially, and the balance wheel 41 has three corresponding mating surfaces 411. When the piston 30 and the balance wheel 41 are engaged, the three contact surfaces 31 and the three mating surfaces 411 are abutted against each other, effectively enhancing the stability of the piston 30 and the balance wheel 41 in circumferential positioning and preventing relative rotation or displacement between the piston 30 and the balance wheel 41. In other embodiments, the number of contact surfaces 31 may also be two, four, etc., which will not be elaborated here.
[0058] like Figure 3 As shown, in one embodiment, a sleeve portion 22 is formed on the diaphragm 20, which can simultaneously engage with the piston 30 and the corresponding balance wheel 41; and the piston 30 engages with the corresponding balance wheel 41. That is to say, the diaphragm pump 100 of this embodiment can utilize the sleeve portion 22 on the diaphragm 20 to engage with the piston and the balance wheel 41 respectively. This facilitates the assembly of the piston 30 and the balance wheel 41 on the diaphragm 20 and ensures the accuracy of the assembly position of the piston 30 and the balance wheel 41 on the diaphragm 20.
[0059] like Figure 3 , Figure 7 As shown, in one embodiment, one end of the sleeve portion 22 abuts and seals against the piston 30; wherein, a sealing rib 23 is also formed on the diaphragm 20, the sealing rib 23 is disposed on the periphery of the sleeve portion 22, and the sealing rib 23 abuts and seals against the piston 30. That is to say, in this embodiment, the diaphragm 20 and the piston 30 are sealed by the abutment of the sleeve portion 22 on the diaphragm 20 and the sealing rib 23 against the piston 30. This not only facilitates the assembly and sealing between the diaphragm 20 and the piston, but also forms a double-layer sealing structure between the two, which can effectively prevent leakage of the conveying medium.
[0060] like Figure 3 , Figure 8 As shown, in one embodiment, the other end of the sleeve portion 22 abuts and seals against the balance wheel 41. That is, in this embodiment, the diaphragm 20 and the balance wheel 41 are sealed by the abutment between the sleeve portion 22 on the diaphragm 20 and the balance wheel 41, which facilitates the assembly and sealing between the diaphragm 20 and the balance wheel 41.
[0061] like Figure 3As shown, in one embodiment, the connector 50 is threaded to the piston 30. That is, in this embodiment, the connector 50 and the piston 30 are connected by a thread, which facilitates the assembly of the piston 30 onto the balance wheel 41. It is understood that in other embodiments, the connector 50 and the piston 30 may also be connected by an interference fit, which will not be elaborated upon here. Here, the connector 50 can be a bolt, screw, etc.
[0062] like Figure 2 As shown, in one embodiment, the diaphragm pump 100 further includes an eccentric wheel 70 and a bearing 80. The swing frame 40 is rotatably mounted on the eccentric wheel 70 via the bearing 80. A stop portion 51 is formed on the connecting member 50, located on the outer side of the swing frame 40 and abutting against and limiting the bearing 80. In other words, the diaphragm pump 100 in this embodiment uses the stop portion 51 on the connecting member 50 to abut and limit the bearing 80, effectively preventing slippage or shaking of the bearing 80 during operation of the swing frame 40. Furthermore, the connecting member 50, while fixing the piston 30 and the swing frame 40, also axially limits the bearing 80, thus eliminating the need for an additional connecting member 50 for fixing the bearing 80, simplifying the overall structure of the diaphragm pump 100, reducing the number of parts, and lowering manufacturing costs.
[0063] like Figure 2 As shown, in one embodiment, the diaphragm pump 100 further includes a drive motor 90. An eccentric wheel 70 is mounted on the rotating shaft 91 of the drive motor 90 and is connected to the drive motor 90 for transmission. When the diaphragm pump 100 is working, the drive motor 90 drives the swing frame 40 to reciprocate through the eccentric structure of the eccentric wheel 70, thereby causing the swing wheel 41 on the swing frame 40 to drive the piston 30 to reciprocate, thereby realizing the volume change of the pump chamber 101.
[0064] This application also claims protection for a water purifier, including the aforementioned diaphragm pump 100.
[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0066] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.
Claims
1. A diaphragm pump, characterized in that, The diaphragm pump (100) includes: One-way valve mounting seat (10); The diaphragm (20) abuts and seals against the one-way valve fixing seat (10), and a pump chamber (101) is formed between the diaphragm (20) and the one-way valve fixing seat (10). A piston (30) is disposed corresponding to the pump chamber (101) and independently disposed relative to the diaphragm (20), and the piston (30) is partially disposed in the corresponding pump chamber (101) and abuts and seals against the diaphragm (20); A swing arm (40) is movably disposed on the side of the diaphragm (20) away from the one-way valve fixing seat (10). The swing arm (40) includes a swing wheel (41), which is correspondingly disposed with the piston (30) and abuts and seals against the diaphragm (20). The swing wheel (41) is also connected to the corresponding piston (30) for driving the piston (30) to reciprocate relative to the one-way valve fixing seat (10) to control the volume change of the pump chamber (101). A connector (50) is provided corresponding to the balance wheel (41), and the connector (50) is inserted into the corresponding piston (30) after passing through the corresponding balance wheel (41) and is connected to the corresponding piston (30) for fixing the piston (30) to the corresponding balance wheel (41).
2. The diaphragm pump according to claim 1, characterized in that, The diaphragm (20) has a through hole (21), the through hole (21) is correspondingly provided with the piston (30), and the piston (30) is inserted into the corresponding balance wheel (41) after passing through the corresponding through hole (21); In the circumferential direction of the piston (30), the piston (30) can abut and limit the corresponding balance wheel (41).
3. The diaphragm pump according to claim 2, characterized in that, The piston (30) has an abutting plane (31) in the circumferential direction, and the balance wheel (41) has a mating plane (411) in the circumferential direction. When the piston (30) is inserted into the balance wheel (41), the abutting surface (31) and the mating surface (411) are attached to each other.
4. The diaphragm pump according to claim 1, characterized in that, The connector (50) is threaded to the piston (30).
5. The diaphragm pump according to claim 1, characterized in that, The diaphragm pump (100) also includes an eccentric wheel (70) and a bearing (80), and the swing frame (40) is rotatably mounted on the eccentric wheel (70) via the bearing (80); The connector (50) has a stop (51) formed thereon. The stop (51) is located on the outside of the swing frame (40) and abuts against the bearing (80) for a limiting position.
6. The diaphragm pump according to claim 1, characterized in that, A sleeve portion (22) is formed on the diaphragm (20), and the sleeve portion (22) can be simultaneously inserted and engaged with the piston (30) and the corresponding balance wheel (41); Furthermore, the piston (30) is inserted into the corresponding balance wheel (41).
7. The diaphragm pump according to claim 6, characterized in that, One end of the sleeve (22) abuts and seals against the piston (30); The diaphragm (20) is also provided with a sealing rib (23), which is located on the periphery of the sleeve (22) and is in contact with the piston (30) for sealing.
8. The diaphragm pump according to claim 6, characterized in that, The other end of the sleeve (22) abuts and seals against the balance wheel (41).
9. The diaphragm pump according to claim 1, characterized in that, The number of pump chambers (101) is set to five, and the five pump chambers (101) are arranged sequentially at intervals along the circumferential direction of the diaphragm (20).
10. A water purifier, characterized in that, The diaphragm pump (100) includes any one of claims 1 to 9.