Low-pulsation diaphragm liquid pump
Through the structure of large motor small pump head and the design of symmetrical staggered transmission rod, the problem of the overall weight and small output of the existing diaphragm liquid pump is solved, and the stable flow rate of liquid output and pulsation reduction is achieved.
Patent Information
- Application Number
- CN202421811420.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-07-30
AI Technical Summary
Existing diaphragm liquid pumps usually use large pump body and small motors, which leads to heavier overall and small output in a single time, which cannot effectively reduce liquid pulsation.
The structure of a large motor and small pump head is adopted, and the two sets of eccentric wheels are arranged symmetrically, so that the transmission rod can produce abnormal movement, so that the liquid absorption and liquid discharge of the two groups of diaphragms are alternately alternating. Combined with the symmetrically interlaced transmission rod design, the liquid pulsation is reduced.
With the flow rate unchanged, the liquid pulsation is reduced through the structure of a large motor and small pump head, and the output efficiency and stability are improved.
Smart Images
Figure CN223152235U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of diaphragm liquid pumps, in particular to a low-pulsation diaphragm liquid pump. Background Art
[0002] The diaphragm pump, also known as the control pump, is the main type of actuator. It receives the control signal output by the control control unit and uses the power operation to change the fluid flow. The role of the diaphragm pump in the control process is to receive the control signal of the regulator or computer, change the flow of the regulated medium, and maintain the regulated parameters within the required range, thereby achieving automation of the production process. If the automatic adjustment system is compared with the manual adjustment process, the detection unit is the human eye, the adjustment control unit is the human brain, and the execution unit - the diaphragm pump is the human hand and foot. To achieve the regulation and control of a certain parameter of the process such as temperature, pressure, flow, liquid level, etc., the diaphragm pump is indispensable.
[0003] The existing technology has the following shortcomings:
[0004] Existing diaphragm liquid pumps usually use a large pump body and a small motor. The pump body is large and heavy overall, and the cavity of the large pump head and small motor is small, resulting in a small single output volume. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a low-pulsation diaphragm liquid pump to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low pulsation diaphragm liquid pump, comprising a bracket, on which a motor and a fixed plate are provided, a pump body is fixedly mounted on the fixed plate by bolts, pump heads are fixedly mounted at both ends of the pump body, a diaphragm is provided between the pump body and the pump head, and a cavity adapted to the diaphragm is opened between the pump body and the pump head.
[0007] As a preferred technical solution of the utility model, the bracket is L-shaped, the motor is fixedly mounted on the bracket, the fixed plate is fixedly mounted on the side of the bracket away from the motor by bolts, the output end of the motor is fixedly mounted with a rotating shaft, and the other end of the rotating shaft extends to the interior of the pump body.
[0008] As a preferred technical solution of the utility model, two groups of eccentric wheels are arranged on the rotating shaft, and the two groups of eccentric wheels are symmetrically arranged. Transmission rods are provided on the eccentric wheels, and the two groups of transmission rods are symmetrically staggered. A diaphragm insert is provided at one end of the transmission rod away from the eccentric wheel, a diaphragm is embedded on the top of the diaphragm insert, and the diaphragm is pressed between the pump body and the pump head.
[0009] As a preferred technical solution of the present utility model, one end of the pump body away from the fixed disk is fixedly installed with a first cover plate through bolts. A bearing is arranged at the center of the first cover plate, and the inner side of the bearing is connected to the outer side of the rotating shaft.
[0010] As a preferred technical solution of the present utility model, liquid outlet pipes are arranged on the outer sides of both groups of pump heads, and both groups of liquid outlet pipes are located on the side of the pump heads away from the motor.
[0011] As a preferred technical solution of the present utility model, one end of both groups of pump heads away from the pump body is fixedly installed with a second cover plate through bolts.
[0012] As a preferred technical solution of the present utility model, the motor is arranged as a large motor, and the pump head is arranged as a small pump head.
[0013] Compared with the prior art, the present utility model provides a low-pulsation diaphragm liquid pump, which has the following beneficial effects:
[0014] In this low-pulsation diaphragm liquid pump, by symmetrically arranging two eccentric wheels, the two transmission rods generate asynchronous movements, so that the liquid suction and liquid discharge of the two diaphragms are sequential. And by arranging a large motor and a small pump head, compared with the smaller cavity of a small motor and a large pump head, the two pump heads can alternately transport liquid, so that the liquid pulsation can be reduced under the condition of constant flow rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0016] Figure 2 is an internal structural schematic diagram of the present utility model;
[0017] Figure 3 is a three-dimensional sectional structural schematic diagram of the present utility model.
[0018] In the figure: 1, bracket; 2, motor; 3, fixed disk; 4, rotating shaft; 5, pump body; 6, pump head; 7, diaphragm; 8, diaphragm insert; 9, eccentric wheel; 10, transmission rod; 11, first cover plate; 12, bearing; 13, liquid outlet pipe; 14, second cover plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0020] Please refer to Figures 1-3 , in this embodiment: A low-pulsation diaphragm liquid pump includes a bracket 1, on which there is a motor 2 and a fixed disk 3. The pump body 5 is fixedly installed on the fixed disk 3 through bolts. At both ends of the pump body 5, pump heads 6 are fixedly installed respectively. A diaphragm 7 is provided between the pump body 5 and the pump head 6, and a cavity adapted to the diaphragm 7 is formed between the pump body 5 and the pump head 6.
[0021] In this embodiment, the bracket 1 is L-shaped. The motor 2 is fixedly installed on the bracket 1. The fixed disk 3 is fixedly installed on the side of the bracket 1 away from the motor 2 through bolts. The output end of the motor 2 is fixedly installed with a rotating shaft 4, and the other end of the rotating shaft 4 extends into the interior of the pump body 5. By starting the motor 2 to drive the rotating shaft 4 to rotate, when the rotating shaft 4 rotates, two eccentric wheels 9 are driven to rotate, and through the transmission rod 10 and the diaphragm insert 8, the diaphragm 7 sucks and discharges liquid.
[0022] In this embodiment, two eccentric wheels 9 are provided on the rotating shaft 4, and the two eccentric wheels 9 are symmetrically arranged. A transmission rod 10 is provided on the eccentric wheel 9, and the two transmission rods 10 are symmetrically and staggeredly arranged. At the end of the transmission rod 10 away from the eccentric wheel 9, there is a diaphragm insert 8. The diaphragm 7 is embedded at the top of the diaphragm insert 8. The diaphragm 7 is pressed between the pump body 5 and the pump head 6. By the symmetric arrangement of the two eccentric wheels 9, the two transmission rods 10 generate asynchronous movements, so that the liquid suction and discharge of the two pump heads 6 are sequential, enabling them to alternately transport liquid.
[0023] In this embodiment, at the end of the pump body 5 away from the fixed disk 3, a first cover plate 11 is fixedly installed through bolts. A bearing 12 is provided at the center of the first cover plate 11, and the inner side of the bearing 12 is connected to the outer side of the rotating shaft 4.
[0024] In this embodiment, liquid outlet pipes 13 are provided on the outer sides of the two pump heads 6, and the two liquid outlet pipes 13 are both located on the side of the pump head 6 away from the motor 2.
[0025] In this embodiment, at the end of the two pump heads 6 away from the pump body 5, a second cover plate 14 is fixedly installed through bolts.
[0026] In this embodiment, the motor 2 is a large motor, and the pump head 6 is a small pump head. By using the setting of a large motor and a small pump head, compared with the smaller cavity of a large pump head and a small motor during use, the two pump heads 6 can alternately transport liquid, enabling the liquid pulsation to be reduced without changing the flow rate.
[0027] Working principle and usage process of the utility model: By starting the motor 2 to drive the rotation of the rotating shaft 4, when the rotating shaft 4 rotates, it drives the two sets of eccentric wheels 9 to start rotating, and through the transmission rod 10 and the diaphragm insert 8, the diaphragm 7 sucks liquid, and discharges the liquid through the liquid outlet pipe 13. The two sets of eccentric wheels 9 are symmetrically arranged, so that the two transmission rods 10 produce asynchronous movements, so that the liquid suction and discharge of the two diaphragms 7 are sequential. By adopting the setting of a large motor and a small pump head, compared with the smaller cavity of a large pump head and a small motor, the two pump heads 6 can alternately transport liquid, so that the liquid pulsation can be reduced without changing the flow rate.
[0028] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A low-pulsation diaphragm liquid pump, comprising a bracket (1), a motor (2) and a fixed disk (3) are provided on the bracket (1), and a pump body (5) is fixedly installed on the fixed disk (3) by bolts, characterized in that: Both ends of the pump body (5) are fixedly installed with pump heads (6). A diaphragm (7) is provided between the pump body (5) and the pump heads (6). A cavity adapted to the diaphragm (7) is formed between the pump body (5) and the pump heads (6).
2. The low-pulsation diaphragm liquid pump according to claim 1, characterized in that: The bracket (1) is L-shaped. The motor (2) is fixedly installed on the bracket (1). The fixing plate (3) is fixedly installed on the side of the bracket (1) away from the motor (2) by bolts. The output end of the motor (2) is fixedly installed with a rotating shaft (4), and the other end of the rotating shaft (4) extends into the interior of the pump body (5).
3. The low-pulsation diaphragm liquid pump according to claim 2, characterized in that: Two sets of eccentric wheels (9) are provided on the rotating shaft (4). The two sets of eccentric wheels (9) are symmetrically arranged. A transmission rod (10) is provided on the eccentric wheel (9), and the two sets of transmission rods (10) are symmetrically and staggeredly arranged. The end of the transmission rod (10) away from the eccentric wheel (9) is provided with a diaphragm insert (8). The diaphragm (7) is embedded at the top of the diaphragm insert (8), and the diaphragm (7) is pressed between the pump body (5) and the pump heads (6).
4. The low-pulsation diaphragm liquid pump according to claim 1, characterized in that: One end of the pump body (5) away from the fixing plate (3) is fixedly installed with a first cover plate (11) by bolts. A bearing (12) is provided at the center of the first cover plate (11), and the inner side of the bearing (12) is connected to the outer side of the rotating shaft (4).
5. A low-pulsation diaphragm liquid pump according to claim 1, characterized in that: Liquid outlet pipes (13) are provided on the outer sides of the two pump heads (6), and the two liquid outlet pipes (13) are both on the side of the pump heads (6) away from the motor (2).
6. A low-pulsation diaphragm liquid pump according to claim 1, wherein: One end of the two pump heads (6) away from the pump body (5) is fixedly installed with a second cover plate (14) by bolts.
7. A low-pulsation diaphragm liquid pump according to claim 1, characterized in that: The motor (2) is a large motor, and the pump head (6) is a small pump head.