CN117212133A - Precision plunger pump easy to exhaust bubbles and control method thereof - Google Patents
Precision plunger pump easy to exhaust bubbles and control method thereof Download PDFInfo
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- CN117212133A CN117212133A CN202311251414.7A CN202311251414A CN117212133A CN 117212133 A CN117212133 A CN 117212133A CN 202311251414 A CN202311251414 A CN 202311251414A CN 117212133 A CN117212133 A CN 117212133A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 238000007789 sealing Methods 0.000 claims abstract description 52
- 238000004140 cleaning Methods 0.000 claims abstract description 23
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 230000009471 action Effects 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The application relates to the field of slow-release medical equipment, and particularly discloses an easy-to-release bubble precise plunger pump which comprises a pump body, wherein one end of the pump body is provided with a pump head, the other end of the pump body is provided with a motor and a driver, the top end of the pump head is provided with a liquid outlet hole, the side surface of the pump head is provided with a liquid inlet hole and a liquid outlet hole, the plunger is respectively connected with the inner wall of the pump head through a sealing assembly, a sealing cavity is formed between the plunger and the inner wall of the pump head, the liquid inlet hole and the sealing cavity form 90 degrees, electromagnetic valves are arranged on the liquid inlet hole and the liquid outlet hole, and a pressure sensor is arranged between the liquid outlet hole and the electromagnetic valve. According to the application, through the arrangement that the liquid inlet hole is cut into 90 degrees with the sealing cavity, the air bubble discharging efficiency can be effectively improved, sample feeding inaccuracy caused by bubbles is prevented, and the arrangement of the driver, the electromagnetic valve and the pressure sensor is combined, so that the air bubble discharging efficiency can be further improved, and the cleaning efficiency can be improved. The application also discloses a control method of the precision plunger pump easy to exhaust bubbles, and the control method has the beneficial effects as described above.
Description
Technical Field
The application relates to the field of medical equipment, in particular to an easy-to-exhaust-bubble precise plunger pump. The application also relates to a control method of the precision plunger pump easy to exhaust bubbles.
Background
The miniature precise plunger pump is widely applied to a plurality of precise instruments including IVD equipment due to the small size and high precision. In an IVD device there is a main melody, i.e. a processing of the samples. All procedures, whether sample addition, reagent addition, stirring, washing, and detection, are performed around this sample, and the possibility of being separated from the sample is that bubbles appear, which mainly have 2 reasons: 1. the air bubbles exist outside the pipeline and are conveyed to various parts of the instrument along with the fluid in the liquid pipeline. 2. Precipitation from liquid: air is readily soluble in water and is not visible but it must be present (the solubility of a gas is a function of temperature and pressure). In short, the existence of bubbles mainly influences the sample adding accuracy, unstable flow and deformation of the optical path, so that the deviation of the final test result is caused.
To solve this problem, the industry generally has the following:
1. pouring liquid into the cavity at a large flow rate, and discharging bubbles in the liquid by utilizing the impulsive force of the liquid, wherein the method can not effectively remove micro bubbles adhered to the inner wall of the cavity, and a large amount of cleaning is needed for a long time, so that cleaning liquid and time are wasted, and the efficiency is greatly reduced;
2. the pump cavity is knocked manually, and bubbles are separated from the inner wall by vibration, so that the method is difficult to ensure the exhaust bubbles, and meanwhile, other unknown factors are brought to operation, and the method cannot be realized on the whole machine.
3. The method effectively solves the problem of bubbles by arranging a degassing element in front, but has a great discount in cost.
Disclosure of Invention
Aiming at the technical problems in the prior art, the application provides the precise plunger pump easy to exhaust bubbles, wherein the liquid inlet of the pump is different from the traditional plunger pump, and the liquid inlet is in a tangential structure with the inner wall of the pump head, so that the energy loss entering the pump head can be minimized; on the other hand, the liquid enters the inner cavity of the pump, finally presents spiral rising along with flow inertia and is discharged, the liquid clings to the inner wall and presents spiral rising, and bubbles adhered to the inner wall flow out together, so that the bubble discharging efficiency is improved.
The technical scheme includes that the pump comprises a pump body, the one end of the pump body is equipped with the pump head, motor and the driver of control motor work are installed to the other end of the pump body, and the axis of rotation of motor passes through the inside plunger coupling of linear drive subassembly with the pump body, the plunger is being close to or keep away from the pump head under the drive of motor and is rectilinear motion, the top that the pump body was kept away from to the pump head is equipped with out the liquid hole, the side of pump head is equipped with the feed liquor hole, feed liquor hole and play liquid hole are connected respectively into, outlet pipe, connect through seal assembly between the inner wall of plunger and pump head, form sealed cavity between pump head, plunger and the seal assembly, feed liquor hole and sealed cavity are cut into 90, all install the solenoid valve that is used for controlling to open and close on the outlet pipe, install pressure sensor between play liquid hole and the solenoid valve.
Further, the linear transmission assembly comprises a screw rod and a sliding block, wherein the screw rod is in threaded connection with one end of the sliding block, the other end of the sliding block is fixedly connected with the plunger, the screw rod is fixedly connected with the rotating shaft, and the sliding block is in sliding connection with the inner wall of the pump body.
Further, the sealing component comprises a sealing ring and a plug seal, static sealing is carried out between the inner wall of the pump head and the plunger through the sealing ring, and dynamic sealing is carried out through the plug seal.
Further, when the plunger is close to the pump head to perform the discharging action, the pressure in the sealing cavity is positive pressure, the liquid in the sealing cavity is discharged from the liquid outlet, and when the plunger is far away from the pump head to perform the sucking action, the pressure in the sealing cavity is negative pressure, and the liquid in the sealing cavity enters from the liquid inlet.
Further, when the plunger moves to the bottommost end, the upper surface of the plunger is lower than the liquid inlet hole.
The beneficial effects are that:
1. according to the application, through the arrangement that the liquid inlet hole and the sealing cavity are mutually cut into 90 degrees, in a low-flow cleaning environment, the efficiency and effect of the air bubble can be effectively improved, the inaccurate sample addition caused by bubbles is prevented, and the arrangement of the driver, the electromagnetic valve and the pressure sensor is combined, so that the efficiency and effect of the air bubble can be further improved, and on the other hand, the existence condition of the bubbles can be conveniently and rapidly judged, and the cleaning efficiency is improved.
2. The plunger pump is simple in structure, does not occupy redundant space, does not increase other structures compared with the traditional plunger pump, improves universality and saves cost.
3. According to the application, when the plunger moves to the bottommost end, the upper surface of the plunger is lower than the liquid inlet hole, so that the problem that liquid firstly enters the sealing cavity and collides with the plunger to generate new bubbles can be avoided.
The application also provides a control method of the precision plunger pump easy to exhaust bubbles, which comprises the following steps:
s1, sending a cleaning instruction, opening electromagnetic valves on a water inlet pipe and a water outlet pipe, and enabling a plunger to perform suction action;
s2, starting the whole system to perform pouring cleaning, enabling the plunger to perform discharging action, and setting 100% stroke steps;
s3, closing the whole system for pouring and cleaning, closing an electromagnetic valve on the water inlet pipe and the water outlet pipe, and performing suction action by a plunger;
s4, observing and judging whether bubbles exist in the sealed cavity, and recording the pipeline pressure at the moment as a calibration value through a pressure sensor when no bubbles exist;
s5, when the cleaning requirement is needed to be carried out later, repeating the steps S1 to S3, and when the pressure value detected by the pressure sensor is equal to the calibration value, judging that no air bubble exists in the inner cavity of the pump, and carrying out the subsequent relevant sample adding step.
Further, in step S1, the plunger is set to 100% of the stroke steps when the plunger performs the suction action, and the plunger is moved downward to be lower than the liquid inlet hole.
Further, in step S3, when the plunger performs the suction operation, the volume of the seal cavity is changed to generate negative pressure, and the bubbles in the seal cavity are exploded as the negative pressure increases and the bubbles are enlarged, thereby eliminating the bubbles.
Further, in step S4, whether bubbles exist in the sealed cavity includes the inner wall of the pump head and whether bubbles exist in the liquid in the sealed cavity.
The beneficial effects are that:
1. according to the application, through the arrangement of the electromagnetic valve, the pressure sensor and the plunger discharging and sucking actions, the efficiency and effect of discharging bubbles can be further improved from the working mode, the problem of bubble residue is solved, the accuracy of subsequent sample adding is ensured, particularly, when the electromagnetic valve is closed, the sealing cavity is positioned in a closed space after the water inlet pipe and the water outlet pipe, when the plunger performs sucking action, namely the plunger moves downwards, the volume of the sealing cavity is increased, negative pressure is generated, and micro bubbles adhered to the inner wall and bubbles in liquid are exploded along with the increase of the negative pressure, so that the bubbles are eliminated; through specific bubble detection function, can effectively judge the bubble residual condition, need not to demolish the complete machine and judge the bubble manually and have problems, improved cleaning efficiency.
2. In the step S1, the plunger is arranged to run downwards below the liquid inlet hole by setting 100% of stroke steps, and then the filling cleaning is carried out, so that the problem that liquid firstly enters the sealing cavity and collides with the plunger to generate new bubbles can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present application;
FIG. 2 is a partial cross-sectional view of a feed port and seal cavity of the present application;
fig. 3 is a flow chart of embodiment 2 of the present application.
Reference numerals illustrate:
1. a liquid outlet hole; 2. a liquid inlet hole; 3. sealing the cavity; 4. sealing by flooding; 5. a seal ring; 6. a pump head; 7. a pump body; 8. a slide block; 9. a plunger; 10. a motor; 11. a driver.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Example 1
The application provides an easy-to-exhaust-bubble precise plunger pump, as shown in figures 1 and 2, which comprises a pump body 7, wherein one end of the pump body 7 is provided with a pump head 6, the other end of the pump body 7 is provided with a motor 10 and a driver 11 for controlling the motor 10 to work, a rotating shaft of the motor 10 is connected with a plunger 9 in the pump body 7 through a linear transmission assembly, the plunger 9 is driven by the motor 10 to move close to or far away from the pump head 6 in a linear manner, the linear transmission assembly comprises a screw rod and a sliding block 8, the screw rod is in threaded connection with one end of the sliding block 8, the other end of the sliding block 8 is fixedly connected with the plunger 9, the screw rod is fixedly connected with the rotating shaft, the screw rod and the two are synchronously moved, the sliding block 8 is in sliding connection with the inner wall of the pump body 7, the top end of the pump head 6 far away from the pump body 7 is provided with a liquid outlet 1, the side surface of the pump head 6 is provided with a liquid inlet 2, the liquid inlet hole 2 and the liquid outlet hole 1 are respectively connected with a water inlet pipe and a water outlet pipe, the plunger 9 is connected with the inner wall of the pump head 6 through a sealing component, a sealing cavity 3 is formed among the pump head 6, the plunger 9 and the sealing component, the sealing component comprises a sealing ring 5 and a flood plug seal 4, static sealing is carried out between the inner wall of the pump head 6 and the plunger 9 through the sealing ring 5, dynamic sealing is carried out through the flood plug seal 4, when the plunger 9 is close to the pump head 6 to carry out discharging action, the pressure in the sealing cavity 3 is positive pressure, liquid in the sealing cavity 3 is discharged from the liquid outlet hole 1, when the plunger 9 is far away from the pump head 6 to carry out sucking action, the pressure in the sealing cavity 3 is negative pressure, the liquid in the sealing cavity 3 enters from the liquid inlet hole 2, the sealing cavity 3 is cut into 90 degrees, electromagnetic valves for controlling opening and closing are arranged on the water inlet pipe and the water outlet pipe, a pressure sensor is arranged between the liquid outlet hole 1 and the electromagnetic valve.
In the embodiment, through the arrangement that the liquid inlet hole 2 and the sealing cavity 3 are cut into 90 degrees, in a low-flow cleaning environment, the efficiency and the effect of the air bubble can be effectively improved, the sample addition inaccuracy caused by bubbles is prevented, and the arrangement of the driver 11, the electromagnetic valve and the pressure sensor is combined, so that the efficiency and the effect of the air bubble can be further improved, the existence of the bubbles can be conveniently and rapidly judged, and the cleaning efficiency is improved; in addition, the application has simple structure, does not occupy redundant space, has no other structure compared with the traditional plunger pump, improves the universality and saves the cost.
In the present application, preferably, as shown in fig. 1 and 3, when the plunger 9 moves to the bottommost end, the upper surface of the plunger 9 is lower than the liquid inlet 2.
In this embodiment, when the plunger 9 moves to the bottommost end, the upper surface of the plunger 9 is lower than the liquid inlet hole 2, so that the problem that the liquid first enters the sealing cavity 3 to collide with the plunger 9 to generate new bubbles can be avoided.
The working principle is as follows: the driver 11 drives the motor 10 to do rotary motion according to instructions, a screw rod fixed on the motor 10 in the linear transmission assembly and a motor 10 shaft synchronously move, the screw rod converts rotary motion into reciprocating linear motion of the plunger 9 through the sliding block 8, the sealing ring 5 in the sealing assembly is used for static sealing, the flood seal 4 is in contact with the plunger 9 to do dynamic sealing, the pump head 6, the plunger 9 and the sealing assembly form a sealed cavity 3, and when the plunger 9 runs up and down, the inner cavity of the pump head 6, namely the volume of the sealed cavity 3, changes to generate positive and negative pressure, and the flow of liquid is pushed.
Example 2
The application also provides a control method of the precision plunger pump easy to exhaust bubbles, as shown in fig. 1 to 3, comprising the following steps:
s1, sending a cleaning instruction, opening electromagnetic valves on a water inlet pipe and a water outlet pipe, and performing suction action by a plunger 9;
s2, starting the whole system to perform pouring cleaning, and when the sealed cavity 3 is full of liquid and is in a stable state, the plunger 9 performs discharging action and sets 100% stroke steps;
s3, closing the whole system, filling and cleaning, closing electromagnetic valves on a water inlet pipe and a water outlet pipe, performing suction action on a plunger 9 to enable the volume of the sealed cavity 3 to change and generate negative pressure, and blasting bubbles in the sealed cavity 3 along with the increase of the negative pressure, so that the bubbles are eliminated, wherein the suction action of the plunger 9 is preferably set to 100% of stroke steps to ensure that the bubbles are completely eliminated;
s4, observing and judging whether bubbles exist in the sealed cavity 3, wherein the bubbles specifically comprise the inner wall of the pump head 6 and the liquid in the sealed cavity 3, and when the bubbles exist, the bubbles can be directly confirmed visually, and the pressure sensor is used for recording the pipeline pressure at the moment as a calibration value;
s5, when the cleaning requirement is needed to be carried out later, repeating the steps S1 to S3, and when the pressure value detected by the pressure sensor is equal to the calibration value, judging that no air bubble exists in the inner cavity of the pump, and carrying out the subsequent relevant sample adding step.
In the embodiment, through the arrangement of the electromagnetic valve, the pressure sensor and the discharging and sucking actions of the plunger 9, the efficiency and the effect of discharging bubbles can be further improved from the working mode, the problem of bubble residue is solved, the accuracy of subsequent sample feeding is ensured, particularly, when the electromagnetic valve is closed, the water inlet pipe and the water outlet pipe are closed, the sealing cavity 3 is positioned in a closed space, when the plunger 9 performs the sucking action, namely, the plunger 9 moves downwards, the volume of the sealing cavity 3 is increased, negative pressure is generated, and tiny bubbles adhered to the inner wall and bubbles in liquid are exploded along with the increase of the negative pressure, so that the bubbles are eliminated; through specific bubble detection function, can effectively judge the bubble residual condition, need not to demolish the complete machine and judge the bubble manually and have problems, improved cleaning efficiency.
In the present application, as shown in fig. 1 and 3, in step S1, the plunger 9 is preferably moved downward below the inlet port 2 by setting the stroke step number of 100% when the plunger 9 performs the suction operation.
In this embodiment, by setting the number of steps of 100% of the travel, after the plunger 9 is moved downward to be lower than the liquid inlet 2, the problem that new bubbles are generated when liquid first enters the sealing cavity 3 and collides with the plunger 9 can be avoided by setting the filling and cleaning.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (9)
1. The utility model provides an easy exhaust bubble precision plunger pump, includes pump body (7), the one end of pump body (7) is equipped with pump head (6), motor (10) and the driver (11) of control motor (10) work are installed to the other end of pump body (7), and the axis of rotation of motor (10) is connected with inside plunger (9) of pump body (7) through sharp transmission subassembly, plunger (9) are in be close to under the drive of motor (10) or keep away from pump head (6) and do rectilinear movement, the top that pump head (6) kept away from pump body (7) is equipped with liquid outlet hole (1), the side of pump head (6) is equipped with inlet opening and closing the liquid outlet pipe respectively with liquid outlet hole (1), a serial communication port, be connected through seal assembly between plunger (9) and the inner wall of pump head (6), form sealed cavity (3) between plunger (9) and the seal assembly, inlet opening and closing the liquid outlet pipe (2) and seal cavity (3) are 90 mutually cut, install on the side of pump head (6) and control and are used for opening and closing between solenoid valve (1).
2. The precise plunger pump capable of easily exhausting bubbles according to claim 1, wherein the linear transmission assembly comprises a screw rod and a sliding block (8), the screw rod is in threaded connection with one end of the sliding block (8), the other end of the sliding block (8) is fixedly connected with a plunger (9), the screw rod is fixedly connected with a rotating shaft, and the sliding block (8) is in sliding connection with the inner wall of the pump body (7).
3. The precision plunger pump easy to exhaust bubbles according to claim 1 or 2, wherein the sealing assembly comprises a sealing ring (5) and a universal plug seal (4), static sealing is carried out between the inner wall of the pump head (6) and the plunger (9) through the sealing ring (5), and dynamic sealing is carried out through the universal plug seal (4).
4. The precision plunger pump capable of easily exhausting bubbles according to claim 3, wherein when the plunger (9) is close to the pump head (6) to conduct exhausting action, the pressure in the sealing cavity (3) is positive pressure, liquid in the sealing cavity (3) is exhausted from the liquid outlet hole (1), when the plunger (9) is far away from the pump head (6) to conduct sucking action, the pressure in the sealing cavity (3) is negative pressure, and the liquid in the sealing cavity (3) enters from the liquid inlet hole (2).
5. The precision plunger pump capable of easily exhausting bubbles according to claim 4, wherein when the plunger (9) moves to the bottommost end, the upper surface of the plunger (9) is lower than the liquid inlet hole (2).
6. The control method of the precision plunger pump capable of easily exhausting bubbles according to any one of claims 1 to 5, comprising the steps of:
s1, sending a cleaning instruction, opening electromagnetic valves on a water inlet pipe and a water outlet pipe, and performing suction action by a plunger (9);
s2, starting the whole system to perform pouring cleaning, performing discharging action by a plunger (9), and setting 100% stroke steps;
s3, closing the whole system for pouring and cleaning, closing an electromagnetic valve on a water inlet pipe and a water outlet pipe, and performing suction action by a plunger (9);
s4, observing and judging whether bubbles exist in the sealed cavity (3), and recording the pipeline pressure at the moment as a calibration value through a pressure sensor when no bubbles exist;
s5, when the cleaning requirement is needed to be carried out later, repeating the steps S1 to S3, and when the pressure value detected by the pressure sensor is equal to the calibration value, judging that no air bubble exists in the inner cavity of the pump, and carrying out the subsequent relevant sample adding step.
7. The control method of the precision plunger pump capable of easily exhausting bubbles according to claim 6, wherein in the step S1, 100% stroke steps are set when the plunger (9) performs suction action, and the plunger (9) is operated downward to be lower than the liquid inlet hole (2).
8. The method for controlling an easy-to-vent precision plunger pump according to claim 6, wherein in step S3, when the plunger (9) performs a suction operation, the volume of the seal chamber (3) is changed to generate a negative pressure, and the bubbles in the seal chamber (3) burst as the negative pressure increases and then the bubbles collapse, thereby eliminating the bubbles.
9. The method for controlling an easy-to-vent precision plunger pump according to claim 6, wherein in step S4, the presence or absence of bubbles in the sealed cavity (3) includes the presence or absence of bubbles in the inner wall of the pump head (6) and the liquid in the sealed cavity (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311251414.7A CN117212133B (en) | 2023-09-26 | 2023-09-26 | Control method of precision plunger pump easy to exhaust bubbles |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311251414.7A CN117212133B (en) | 2023-09-26 | 2023-09-26 | Control method of precision plunger pump easy to exhaust bubbles |
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| CN117212133B CN117212133B (en) | 2024-04-19 |
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| CN218207049U (en) * | 2022-10-12 | 2023-01-03 | 深圳市科力尔泵业有限公司 | Plunger pump with bubble eliminating structure |
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| CN117212133B (en) | 2024-04-19 |
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