Flow regulating mechanism of hydraulic metering pump

Through the hydraulic metering pump flow adjustment mechanism, the combination of the drive motor and the threaded rod adjustment plate is used to solve the problem of water source interruption in the metering pump under low flow conditions, and to achieve stepless flow adjustment and stable delivery.

CN223387497UActive Publication Date: 2025-09-26GUANGZHOU YIZHONG ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202423020605.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-09
Publication Date
2025-09-26
Estimated Expiration
2034-12-09

AI Technical Summary

Technical Problem

Existing metering pumps have long intervals when delivering water at low flow rates, resulting in intermittent water supply problems at the user end.

Method used

A flow regulation mechanism for a hydraulic metering pump is designed. The driving motor drives the driving mechanism in the power chamber, which drives the pressure plate to slide in the movable chamber. The hydraulic oil overcomes the pressure of the spring to drive the driven plate to move, causing the volume of the pumping chamber to change. Combined with the movement of the threaded rod adjustment plate, stepless flow regulation is achieved.

Benefits of technology

It achieves precise flow regulation by adjusting the pressure and volume change of the hydraulic oil while keeping the pumping frequency unchanged, thus avoiding the intermittent phenomenon of the water source.

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Abstract

The utility model relates to the technical field of metering pumps, in particular to a hydraulic metering pump flow adjusting mechanism which comprises a movable bin, a power bin, a pumping bin, a pressure plate, a driven plate, a first spring, an adjusting plate, a threaded rod and a driving motor. A power bin is arranged on one side of the movable bin, a driving motor is arranged on one side of the power bin, a pumping bin is arranged on the other side of the movable bin, a pressure plate is arranged on the inner side of the movable bin and is in sliding sealing connection with the inner wall of the movable bin, and a driven plate is arranged on one side of the pressure plate and is in sliding sealing connection with the inner wall of the movable bin. Hydraulic oil is filled between the pressure plate and the driven plate, a first spring is arranged on one side of the driven plate, an adjusting plate is arranged above the movable bin, and a threaded rod is arranged above the adjusting plate; according to the utility model, the metering pump is improved, so that the pumping flow of the metering pump is subjected to stepless regulation under the condition that the pumping frequency of the metering pump is not changed, and the metering pump can pump a water source at a high frequency under different flows.
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Description

Technical Field

[0001] The utility model relates to the technical field of metering pumps, in particular to a flow regulating mechanism of a hydraulic metering pump. Background Art

[0002] A metering pump is a precision metering device driven by hydraulic pressure and is widely used in chemical, pharmaceutical, food, water treatment and other industries.

[0003] The existing metering pump drive mechanism has a fixed amount of water pumped per time. Therefore, when adjusting the pumping flow rate, it is often achieved by adjusting the operating frequency of the drive mechanism. In this way, when the flow rate is low, the water source delivered by the metering pump will have a long interval, resulting in intermittent water supply at the water user end.

[0004] Therefore, in response to the above problems, a hydraulic metering pump flow regulating mechanism can be designed to improve the metering pump so that the pumping flow of the metering pump can be infinitely adjusted without changing the pumping frequency, so that the metering pump can pump water at high frequencies at different flow rates. Utility Model Content

[0005] In order to overcome the problem that the amount of water pumped by most metering pump drive mechanisms in a single time is fixed, the pumping flow rate is often adjusted by adjusting the operating frequency of the drive mechanism. In this way, when the flow rate is low, the water source delivered by the metering pump will have a long interval, resulting in intermittent water supply at the water user end.

[0006] The technical solution of the utility model is: a hydraulic metering pump flow regulating mechanism, including a movable chamber, a power chamber, a pumping chamber, a pressure plate, a driven plate, a first spring, an adjusting plate, a threaded rod and a drive motor; a power chamber is provided on one side of the movable chamber, a drive motor is provided on one side of the power chamber, a pumping chamber is provided on the other side of the movable chamber, a pressure plate is provided on the inner side of the movable chamber, the pressure plate is slidingly and sealedly connected to the inner wall of the movable chamber, a driven plate is provided on one side of the pressure plate, the driven plate is slidingly and sealedly connected to the inner wall of the movable chamber, hydraulic oil is filled between the pressure plate and the driven plate, a first spring is provided on one side of the driven plate, an adjusting plate is provided above the movable chamber, and a threaded rod is provided above the adjusting plate.

[0007] Preferably, a driving motor is provided to drive the driving mechanism in the power chamber, driving the pressure plate to slide in the movable chamber, and the hydraulic oil in the movable chamber is used to overcome the pressure of the first spring to drive the driven plate to move, so that the volume of the pumping chamber changes, and water is sucked into or pumped out of the pumping chamber. When the flow needs to be adjusted, the threaded rod can be rotated to drive the adjustment plate to move, so that the volume of the hydraulic oil in the movable chamber changes, thereby changing the pressure of the hydraulic oil, and finally the pressure plate can make the driven plate slide different distances within the same movable stroke, thereby adjusting the amount of water sucked and pumped by the pumping chamber in a single time, and realizing the function of adjusting the flow while keeping the pumping frequency unchanged.

[0008] Preferably, an adjustment cylinder is provided on the outside of the adjustment plate, the adjustment cylinder is connected to the movable bin, the adjustment plate is slidingly and sealingly connected to the adjustment cylinder, and the threaded rod passes through the top of the adjustment cylinder and is threadedly connected to the adjustment cylinder.

[0009] Preferably, a guide rod is provided above the adjustment plate, the guide rod passes through the adjustment cylinder and is slidably connected to the adjustment cylinder, a scale is provided on the outside of the guide rod, a rotating disk is provided above the threaded rod, and a top block is provided at the bottom of the threaded rod.

[0010] Preferably, a sliding rod is provided on one side of the driven plate, a first mounting plate is provided at one end of the sliding rod, a second mounting plate is provided on one side of the first mounting plate, and the second mounting plate is fixedly connected to the movable bin.

[0011] Preferably, a power wheel is provided on the inner side of the power compartment, a rotating shaft is provided on one side of the power wheel, the rotating shaft is eccentrically arranged with the power wheel, a driven wheel is provided on the outer side of the power wheel, a ball bearing is provided between the power wheel and the driven wheel, a first connecting rod is provided on one side of the pressure plate, a second connecting rod is provided on one side of the driven wheel, and the second connecting rod is rotatably connected to the first connecting rod.

[0012] Preferably, a water inlet is provided at the bottom of the pumping bin, a water outlet is provided above the pumping bin, and mounting tubes are provided at the water inlet and the water outlet. The mounting tubes are open at one end and closed at the other end, and a water-permeable groove is provided on the outside of the mounting tubes.

[0013] Preferably, the opening diameter of the mounting cylinder is smaller than the inner diameter of the mounting cylinder, a valve is provided on the inner side of the mounting cylinder, the diameter of the valve is consistent with the diameter of the mounting cylinder, the valve is slidingly connected to the mounting cylinder, and a second spring is provided on one side of the valve.

[0014] Beneficial effects of the utility model:

[0015] 1. When the flow rate needs to be adjusted, the threaded rod can be rotated to drive the adjusting plate to move, so that the volume of the hydraulic oil in the movable chamber changes, thereby changing the pressure of the hydraulic oil. Ultimately, the pressure plate can make the driven plate slide different distances within the same movable stroke, thereby adjusting the amount of water pumped in a single water suction in the pumping chamber, and realizing the function of adjusting the flow rate under the condition of unchanged pumping frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the three-dimensional structure of a flow regulating mechanism of a hydraulic metering pump of the present utility model;

[0017] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the movable chamber of a flow regulating mechanism of a hydraulic metering pump of the present invention;

[0018] Figure 3 Shown is a schematic diagram of the three-dimensional structure of the power compartment of a hydraulic metering pump flow regulating mechanism of the present utility model;

[0019] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the pumping chamber of a hydraulic metering pump flow regulating mechanism of the present invention.

[0020] Explanation of the accompanying drawings: 1. movable chamber; 2. power chamber; 3. pumping chamber; 4. pressure plate; 5. driven plate; 6. first spring; 7. adjusting plate; 8. threaded rod; 9. driving motor; 201. rotating shaft; 202. power wheel; 203. driven wheel; 204. ball; 301. water inlet; 302. water outlet; 303. mounting cylinder; 304. valve; 305. second spring; 306. water permeable groove; 401. first connecting rod; 402. second connecting rod; 501. sliding rod; 502. first mounting plate; 503. second mounting plate; 701. guide rod; 702. scale; 703. adjusting cylinder; 801. top block; 802. rotating disk. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figure 1-Figure 4The utility model provides an embodiment: a flow regulating mechanism of a hydraulic metering pump, comprising a movable chamber 1, a power chamber 2, a pumping chamber 3, a pressure plate 4, a driven plate 5, a first spring 6, an adjusting plate 7, a threaded rod 8 and a driving motor 9; a power chamber 2 is provided on one side of the movable chamber 1, a driving motor 9 is provided on one side of the power chamber 2, a pumping chamber 3 is provided on the other side of the movable chamber 1, a pressure plate 4 is provided on the inner side of the movable chamber 1, the pressure plate 4 is slidingly and sealedly connected to the inner wall of the movable chamber 1, a driven plate 5 is provided on one side of the pressure plate 4, the driven plate 5 is slidingly and sealedly connected to the inner wall of the movable chamber 1, hydraulic oil is filled between the pressure plate 4 and the driven plate 5, a first spring 6 is provided on one side of the driven plate 5, an adjusting plate 7 is provided above the movable chamber 1, and a threaded rod 8 is provided above the adjusting plate 7.

[0023] See also Figure 2 In this embodiment, an adjusting cylinder 703 is provided on the outside of the adjusting plate 7, and the adjusting cylinder 703 is connected to the movable bin 1. The adjusting plate 7 is slidably and sealedly connected to the adjusting cylinder 703. The threaded rod 8 passes through the top of the adjusting cylinder 703 and is threadedly connected to the adjusting cylinder 703. A guide rod 701 is provided above the adjusting plate 7. The guide rod 701 passes through the adjusting cylinder 703 and is slidably connected to the adjusting cylinder 703. A scale 702 is provided on the outside of the guide rod 701. A rotating disk 802 is provided above the threaded rod 8. A top block 801 is provided at the bottom of the threaded rod 8. A sliding rod 501 is provided on one side of the driven plate 5. One end of the sliding rod 501 is provided. There is a first mounting plate 502, and a second mounting plate 503 is provided on one side of the first mounting plate 502, and the second mounting plate 503 is fixedly connected to the movable warehouse 1; the adjusting cylinder 703 is used to install the threaded rod 8 and the adjusting plate 7 and accommodate part of the hydraulic oil, the guide rod 701 guides the movement of the adjusting plate 7, and at the same time the scale 702 makes it convenient for the operator to know the position of the adjusting plate 7, and the rotating disk 802 makes it convenient for the operator to rotate the threaded rod 8 to drive the top block 801 to push the adjusting plate 7 to move, the second mounting plate 503 and the first mounting plate 502 are used to install the first spring 6, and the sliding rod 501 is used to connect the driven plate 5 and the first mounting plate 502.

[0024] See also Figure 3201 and 202. In this embodiment, a power wheel 202 is provided on the inner side of the power warehouse 2, and a rotating shaft 201 is provided on one side of the power wheel 202. The rotating shaft 201 and the power wheel 202 are eccentrically arranged. A driven wheel 203 is provided on the outer side of the power wheel 202, and a ball 204 is provided between the power wheel 202 and the driven wheel 203. A first connecting rod 401 is provided on one side of the pressure plate 4, and a second connecting rod 402 is provided on one side of the driven wheel 203. The second connecting rod 402 is rotatably connected to the first connecting rod 401; the eccentric arrangement of the rotating shaft 201 and the power wheel 202 enables the driving motor 9 to make the power wheel 202 rotate eccentrically around the axis of the rotating shaft 201, and utilizes the ball 204 to rotatably connect the power wheel 202 and the driven wheel 203, so that the eccentrically rotated power wheel 202 drives the driven wheel 203 to move and utilizes the connecting rod structure composed of the first connecting rod 401 and the second connecting rod 402 to drive the pressure plate 4 to reciprocate in the movable warehouse 1.

[0025] See also Figure 4 In this embodiment, a water inlet 301 is provided at the bottom of the pumping chamber 3, and a water outlet 302 is provided above the pumping chamber 3. A mounting cylinder 303 is provided at the water inlet 301 and the water outlet 302. The mounting cylinder 303 is open at one end and closed at the other end. A water-permeable groove 306 is provided on the outside of the mounting cylinder 303. The opening diameter of the mounting cylinder 303 is smaller than the inner diameter of the mounting cylinder 303. A valve 304 is provided on the inside of the mounting cylinder 303. The diameter of the valve 304 is consistent with the diameter of the mounting cylinder 303. The valve 304 is slidably connected to the mounting cylinder 303, and a second spring 305 is provided on one side of the valve 304. When the driven plate 5 is moved into the movable chamber 1 When retracted, the internal volume of the pumping chamber 3 becomes larger, and water is sucked in from the water inlet 301, and the valve 304 at the water inlet 301 is pushed to move and compress the second spring 305, so that water enters the pumping chamber 3 from the water permeable groove 306. In this process, the valve 304 at the water outlet 302 and the mounting cylinder 303 are closed to close the water outlet 302 channel. When the driven plate 5 moves out of the movable chamber 1, the internal volume of the pumping chamber 3 becomes smaller, and water pushes the valve 304 at the water outlet 302 to compress the second spring 305 and flows out of the pumping chamber 3 from the water outlet 302. In this process, the valve 304 at the water inlet 301 is closed to close the water inlet 301 channel.

[0026] When adjusting the flow rate, grasp the rotating disk 802 and rotate it to drive the threaded rod 8 to move up and down. When moving downward, the top block 801 can push the adjusting plate 7 to move downward. The position of the top block 801 is the maximum height that the adjusting plate 7 can move in the adjusting cylinder 703. After the position of the adjusting plate 7 is changed, the volume of the hydraulic oil that the adjusting cylinder 703 can accommodate also changes, and the pressure of the hydraulic oil between the pressure plate 4 and the driven plate 5 also changes. At this time, after the pressure plate 4 moves the same distance again, the displacement of the driven plate 5 will change, thereby changing the volume difference between the water absorption and pumping of the pumping chamber 3, which plays the function of adjusting the water volume pumped in a single time.

[0027] Through the above steps, the driving mechanism in the power bin 2 is driven by setting a driving motor 9, driving the pressure plate 4 to slide in the movable bin 1, and utilizing the hydraulic oil in the movable bin 1 to overcome the pressure of the first spring 6 to drive the driven plate 5 to move, so that the volume of the pumping bin 3 changes, and water is sucked into or pumped out of the pumping bin 3. When the flow needs to be adjusted, the threaded rod 8 can be rotated to drive the adjusting plate 7 to move, so that the volume of the hydraulic oil in the movable bin 1 changes, thereby changing the pressure of the hydraulic oil, and finally making the pressure plate 4 within the same active stroke. The driven plate 5 can slide different distances, thereby adjusting the amount of water pumped by the pumping bin 3 in a single time, and realizing the function of adjusting the flow while keeping the pumping frequency unchanged.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A flow regulating mechanism for a hydraulic metering pump, comprising a movable chamber (1); characterized in that: The movable chamber (1) further comprises a power chamber (2), a pumping chamber (3), a pressure plate (4), a driven plate (5), a first spring (6), an adjusting plate (7), a threaded rod (8) and a driving motor (9); a power chamber (2) is provided on one side of the movable chamber (1), a driving motor (9) is provided on one side of the power chamber (2), a pumping chamber (3) is provided on the other side of the movable chamber (1), a pressure plate (4) is provided on the inner side of the movable chamber (1), the pressure plate (4) is connected to the inner wall of the movable chamber (1) in a sliding and sealing manner, a driven plate (5) is provided on one side of the pressure plate (4), the driven plate (5) is connected to the inner wall of the movable chamber (1) in a sliding and sealing manner, hydraulic oil is filled between the pressure plate (4) and the driven plate (5), a first spring (6) is provided on one side of the driven plate (5), an adjusting plate (7) is provided above the movable chamber (1), and a threaded rod (8) is provided above the adjusting plate (7).

2. A flow regulating mechanism for a hydraulic metering pump according to claim 1, characterized in that: An adjusting cylinder (703) is provided on the outer side of the adjusting plate (7), the adjusting cylinder (703) is connected and communicated with the movable chamber (1), the adjusting plate (7) and the adjusting cylinder (703) are connected in a sliding and sealing manner, and the threaded rod (8) passes through the upper side of the adjusting cylinder (703) and is threadedly connected to the adjusting cylinder (703).

3. A flow regulating mechanism for a hydraulic metering pump according to claim 2, characterized in that: A guide rod (701) is provided above the adjustment plate (7), the guide rod (701) passes through the adjustment cylinder (703) and is slidably connected to the adjustment cylinder (703), a scale (702) is provided on the outside of the guide rod (701), a rotating disk (802) is provided above the threaded rod (8), and a top block (801) is provided at the bottom of the threaded rod (8).

4. A flow regulating mechanism for a hydraulic metering pump according to claim 1, characterized in that: A sliding rod (501) is provided on one side of the driven plate (5), a first mounting plate (502) is provided on one end of the sliding rod (501), a second mounting plate (503) is provided on one side of the first mounting plate (502), and the second mounting plate (503) is fixedly connected to the movable bin (1).

5. The flow regulating mechanism of a hydraulic metering pump according to claim 1, characterized in that: A power wheel (202) is provided on the inner side of the power compartment (2), a rotating shaft (201) is provided on one side of the power wheel (202), the rotating shaft (201) and the power wheel (202) are eccentrically arranged, a driven wheel (203) is provided on the outer side of the power wheel (202), a ball (204) is provided between the power wheel (202) and the driven wheel (203), a first connecting rod (401) is provided on one side of the pressure plate (4), a second connecting rod (402) is provided on one side of the driven wheel (203), and the second connecting rod (402) is rotatably connected to the first connecting rod (401).

6. A flow regulating mechanism for a hydraulic metering pump according to claim 1, characterized in that: A water inlet (301) is provided at the bottom of the pumping chamber (3), a water outlet (302) is provided above the pumping chamber (3), and a mounting tube (303) is provided at the water inlet (301) and the water outlet (302). The mounting tube (303) is open at one end and closed at the other end, and a water-permeable groove (306) is provided on the outer side of the mounting tube (303).

7. A flow regulating mechanism for a hydraulic metering pump according to claim 6, characterized in that: The opening diameter of the mounting cylinder (303) is smaller than the inner diameter of the mounting cylinder (303). A valve (304) is provided on the inner side of the mounting cylinder (303). The diameter of the valve (304) is consistent with the diameter of the mounting cylinder (303). The valve (304) is slidably connected to the mounting cylinder (303). A second spring (305) is provided on one side of the valve (304).