Pump head structure of diaphragm booster pump
By adopting a large bevel angle design and eccentric-driven synchronous piston movement in the diaphragm booster pump head, the problem of diaphragm wear is solved, the working efficiency and self-priming performance of the pump are improved, and the service life of the diaphragm is extended.
Patent Information
- Application Number
- CN202423002774.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-12-06
AI Technical Summary
The diaphragm in the pump head of the diaphragm booster pump is prone to wear and rupture, causing the pump head to leak and fail. The small fillet or rounded corner structure in the existing design exacerbates the failure of the diaphragm.
In the pump head structure, a large bevel design is adopted on the edge of the control body, combined with the synchronous movement of the eccentric wheel and the piston, which reduces the wear of the diaphragm during the upward movement, increases the deformation space of the diaphragm, and improves the volume change efficiency.
By improving the matching edge structure of the diaphragm deformation, diaphragm wear is reduced, the pump's working efficiency and self-priming performance are improved, the diaphragm life is extended, and pump head failure is avoided.
Smart Images
Figure CN223424196U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of diaphragm booster pumps, and more particularly to a pump head structure of a diaphragm booster pump. Background Art
[0002] A diaphragm booster pump is a device that achieves pressurization through the reciprocating motion of a diaphragm. It is commonly used in cleaning, reverse osmosis, and boosting. Its working principle is to change the volume of the studio through the back-and-forth movement of the diaphragm, thereby sucking in and discharging liquid.
[0003] The reliability and life of a diaphragm booster pump are mainly restricted by the diaphragm. Most failure modes are diaphragm wear and rupture. At present, the matching edges between the inner cavity of the pump head control body of the diaphragm and the maximum deformation of the diaphragm are usually small fillet or rounded corner structures. The diaphragm is prone to failure, which will cause the pump head to leak, resulting in product failure and scrapping. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a diaphragm booster pump head structure to solve the problems existing in the above-mentioned background technology.
[0005] The utility model provides the following technical solution: a diaphragm booster pump head structure, comprising an upper shell and a lower shell, a suction valve and a control body fixedly mounted on the upper shell, the suction valve output end being fixedly connected to the control body input end, a piston being mounted inside the control body, a diaphragm being provided on one side of the piston, a vibrating body fixing frame and an eccentric wheel being further mounted on the upper shell, and the eccentric wheel being connected to the pump head drive shaft.
[0006] Preferably, the diaphragm is located between the piston and the vibrating body fixing frame, the piston and the vibrating body fixing frame are fixedly connected by positioning screws, a piston sealing gasket is provided between the piston and the positioning screws, and a large bevel is provided at the edge of the control body.
[0007] Preferably, a first bearing and a second bearing are provided on the surface of the eccentric wheel, and the eccentric wheel is rotatably connected to the upper shell through the first bearing and the second bearing.
[0008] Preferably, a bearing pressure plate is provided on one side of the first bearing, a bearing inner sleeve is provided on the inner side of the second bearing, and a front end cover is provided on the outer side of the second bearing.
[0009] Preferably, the upper shell and the lower shell are fixedly connected by pump head screws.
[0010] The technical effects and advantages of this utility model are:
[0011] The eccentric wheel can rotate under the traction of the pump head drive shaft. The eccentric wheel rotates and drives the diaphragm to vibrate through the vibrating body fixing frame. At the same time, the piston moves synchronously along the inside of the control body. When the volume of the inner cavity of the control body increases, since the pressure in the inner cavity is lower than the external atmospheric pressure, the liquid is pushed by the atmospheric pressure, and the liquid enters the inner cavity of the control body through the suction valve. The utility model improves the matching edge of the inner cavity of the pump head control body and the maximum deformation of the diaphragm, and improves the original small fillet or right fillet to a large bevel structure, so that when the diaphragm is stretched upward, sufficient space for the diaphragm to deform is left, which can reduce the wear of the diaphragm during the upward movement, effectively improve the volume change caused by the diaphragm deformation, and thus improve the working efficiency and self-priming performance of the water pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0013] Figure 2 For this utility model Figure 1 A magnified view of the structure in Figure 2.
[0014] Figure 3 For this utility model Figure 2 A magnified view of the structure at point B in FIG.
[0015] Figure 4 This is a schematic diagram of the control body structure of the utility model.
[0016] Figure 5 This is a schematic diagram of the control body structure of the diaphragm booster pump head in the prior art.
[0017] The accompanying drawings are marked as follows: 1. upper shell; 2. suction valve; 3. control body; 31. large bevel; 4. piston seal; 5. piston; 6. diaphragm; 7. lower shell; 8. vibrating body fixing frame; 9. positioning screw; 10. first bearing; 11. bearing pressure plate; 12. eccentric wheel; 13. front end cover; 14. second bearing; 15. bearing inner sleeve; 16. pump head screw. DETAILED DESCRIPTION
[0018] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely examples. The diaphragm booster pump head structure involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0019] The utility model provides a diaphragm booster pump head structure, including an upper shell 1 and a lower shell 7, a suction valve 2 and a control body 3 are fixedly mounted on the upper shell 1, the control body 3 includes some channels or valves for controlling the flow of liquid, the output end of the suction valve 2 is fixedly connected to the input end of the control body 3, a piston 5 is installed inside the control body 3, a diaphragm 6 is provided on one side of the piston 5, a vibrating body fixing frame 8 and an eccentric wheel 12 are further mounted on the upper shell 1, the eccentric wheel 12 is connected to the pump head drive shaft, the movement of the piston 5 is driven by the eccentric wheel 12, the piston 5 reciprocates in the control body 3 to realize the promotion of the liquid, the diaphragm 6 and the piston 5 work synchronously, and the pressure is increased by the expansion and contraction of the diaphragm 6.
[0020] Furthermore, the diaphragm 6 is located between the piston 5 and the vibrating body fixing frame 8, and the piston 5 and the vibrating body fixing frame 8 are fixedly connected by a positioning screw 9. A piston sealing gasket 4 is provided between the piston 5 and the positioning screw 9. The piston sealing gasket 4 ensures the sealing of the piston 5 during movement. A large bevel 31 is provided at the edge of the control body 3. The structural design of the large bevel 31 allows sufficient deformation space for the diaphragm 6 when it is stretched upward, which can reduce the wear of the diaphragm 6 during the upward movement and increase the volume change caused by the deformation of the diaphragm 6.
[0021] Furthermore, a first bearing 10 and a second bearing 14 are provided on the surface of the eccentric wheel 12. The eccentric wheel 12 and the upper shell 1 are rotatably connected through the first bearing 10 and the second bearing 14. The first bearing 10 and the second bearing 14 are used to support the eccentric wheel 12, which can reduce friction and wear during movement.
[0022] Furthermore, a bearing pressure plate 11 is provided on one side of the first bearing 10, a bearing inner sleeve 15 is provided on the inner side of the second bearing 14, and a front end cover 13 is provided on the outer side of the second bearing 14. The bearing pressure plate 11 is used to fix the bearing and maintain the axial position of the bearing, the bearing inner sleeve 15 is used to support and position the bearing, and the front end cover 13 is used to seal the front end of the pump head.
[0023] Furthermore, the upper shell 1 and the lower shell 7 are fixedly connected by the pump head screws 16. The upper shell 1 and the lower shell 7 are used to accommodate and fix various components. Fixing the upper shell 1 and the lower shell 7 by the pump head screws 16 can ensure the overall sealing and structural strength of the pump head.
[0024] The working principle of the present invention is as follows: the eccentric wheel 12 rotates under the traction of the pump head drive shaft, the eccentric wheel 12 rotates and drives the diaphragm 6 to vibrate through the vibrating body fixing frame 8, and at the same time the piston 5 moves synchronously along the inside of the control body 3. When the volume of the inner cavity of the control body 3 increases, since the pressure in the inner cavity is lower than the external atmospheric pressure, the liquid is pushed by the atmospheric pressure, and the liquid enters the inner cavity of the control body 3 through the suction valve 2.
[0025] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.
[0026] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.
[0027] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A diaphragm booster pump head structure, comprising an upper shell (1) and a lower shell (7), characterized in that: A suction valve (2) and a control body (3) are fixedly mounted on the upper housing (1); the output end of the suction valve (2) is fixedly connected to the input end of the control body (3); a piston (5) is mounted inside the control body (3); a diaphragm (6) is provided on one side of the piston (5); a vibrating body fixing frame (8) and an eccentric wheel (12) are also mounted on the upper housing (1); and the eccentric wheel (12) is connected to a pump head drive shaft.
2. A diaphragm booster pump head structure according to claim 1, characterized in that: The diaphragm (6) is located between the piston (5) and the vibrating body fixing frame (8), the piston (5) and the vibrating body fixing frame (8) are fixedly connected via a positioning screw (9), a piston sealing gasket (4) is provided between the piston (5) and the positioning screw (9), and a large bevel angle (31) is provided at the edge of the control body (3).
3. A diaphragm booster pump head structure according to claim 2, characterized in that: A first bearing (10) and a second bearing (14) are provided on the surface of the eccentric wheel (12), and the eccentric wheel (12) and the upper shell (1) are rotatably connected via the first bearing (10) and the second bearing (14).
4. A diaphragm booster pump head structure according to claim 3, characterized in that: A bearing pressure plate (11) is provided on one side of the first bearing (10), a bearing inner sleeve (15) is provided on the inner side of the second bearing (14), and a front end cover (13) is provided on the outer side of the second bearing (14).
5. A diaphragm booster pump head structure according to claim 4, characterized in that: The upper housing (1) and the lower housing (7) are fixedly connected via pump head screws (16).