CN114033665B - Plunger pump, control method of plunger pump and storage medium - Google Patents
Plunger pump, control method of plunger pump and storage medium Download PDFInfo
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- CN114033665B CN114033665B CN202111433320.2A CN202111433320A CN114033665B CN 114033665 B CN114033665 B CN 114033665B CN 202111433320 A CN202111433320 A CN 202111433320A CN 114033665 B CN114033665 B CN 114033665B
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- pump
- plunger
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- push
- broom
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention provides a plunger pump, a control method of the plunger pump and a storage medium, wherein the plunger pump comprises: the pump body is provided with a plunger cavity at the axis; the pump head is arranged on the pump body and is provided with a pump head inner cavity; the plunger is arranged in the plunger cavity and the pump head inner cavity; the sealing mechanism is arranged between the pump head and the pump body and sleeved on the peripheral surface of the plunger; and the crystal pushing and sweeping rings are all arranged between the sealing mechanism and the pump body and are all sleeved on the peripheral surface of the plunger. Through establish a plurality of crystallization push away and sweep the ring on the plunger, the plunger pushes away through sealing mechanism and crystallization in proper order and sweeps the ring during imbibition, and the plunger pushes away through the crystallization in proper order during flowing back and sweeps ring, sealing mechanism after the salt solution crystallization that ring department oozed from the crystallization, and the plunger pushes away and sweeps the ring by the crystallization and clears away during the flowing back, and then effectual protection sealing mechanism, improves the life of accurate plunger pump, guarantee the sealing performance and the accurate nature of plunger pump.
Description
Technical Field
The invention relates to the technical field of plunger pumps, in particular to a plunger pump, a control method of the plunger pump and a storage medium.
Background
Due to its small size and high precision, micro plunger pumps (mainly plunger pumps) are widely used in many precision instruments including IVD (in vitro diagnostic products). The seal in a plunger pump is a dynamic seal and the relative movement between the plunger and seal is also required to maintain a good seal. The sealing performance is particularly important for a precise plunger pump, and the leakage quantity directly determines the precision grade of the precise plunger pump. Under the same configuration, the sealing performance is increased, the abrasion is increased, and the service life is shortened. With the development of the times, higher service life requirements are put forward on the precision plunger pump. This need is particularly acute and acute when delivering saline solutions. Salt solutions, especially concentrated salt solutions, tend to crystallize. Once leakage occurs, the saline solution remaining on the plunger surface can crystallize, causing damage to the seal, further exacerbating the leakage, creating more crystallization, and initiating the vicious circle.
However, the existing scheme for solving the leakage problem of the plunger pump often has the problems of poor sealing and abrasion-proof effects, complex structure, difficult maintenance, large running resistance and low precision.
Therefore, how to provide a low-cost, low-resistance and high-precision plunger pump sealing structure is a technical problem to be solved urgently.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a plunger pump, a control method of the plunger pump and a storage medium, and aims to solve the problems of poor anti-abrasion effect, complex structure, difficult maintenance, large running resistance and low precision of a sealing structure of the plunger pump in the prior art.
The technical scheme adopted by the invention for solving the technical problem is as follows: a plunger pump for a precision instrument apparatus, comprising:
the pump comprises a pump body, wherein a plunger cavity is formed in the axis of the pump body;
the pump head is arranged on the pump body, and an inner cavity of the pump head is formed in the pump head;
a plunger disposed in the plunger chamber and the pump head inner chamber;
the sealing mechanism is arranged between the pump head and the pump body and sleeved on the peripheral surface of the plunger;
and the crystal pushing and sweeping rings are arranged between the sealing mechanism and the pump body and are sleeved on the outer peripheral surface of the plunger.
Further, the crystallization sweeping ring comprises:
a push-broom ring body disposed between the sealing mechanism and the pump body;
the pushing and sweeping cutting edge is sleeved on the plunger;
the connecting part is arranged between the push-broom cutting edge and the push-broom ring body.
Further, the sealing mechanism includes:
a primary seal ring disposed between the pump head and the pump body;
the O-shaped sealing ring is arranged between the main sealing ring and the pump head, and the main sealing ring is sleeved on the plunger.
Further, the plunger pump further comprises:
the transmission mechanism is arranged at one end of the pump body, which is far away from the pump head;
and the driving controller is electrically connected with the transmission mechanism.
Further, the transmission mechanism includes:
the motor is arranged at one end of the pump body, which is far away from the pump head;
one end of the screw rod is connected with the motor;
and one end of the sliding block is connected with the screw rod, and the other end of the sliding block is connected with the plunger.
The invention adopts another technical scheme for solving the technical problems as follows: a control method of the plunger pump as described above, comprising:
receiving a pump starting instruction, and inquiring the current state of the pump by the main control module;
and when the current state of the pump is in a dormant state, the pump is started according to a preset awakening flow.
Further, the method comprises the following steps: when the current state of the pump is in the dormant state, the pump is started according to a preset awakening flow, and the method specifically comprises the following steps:
judging whether the current state of the pump is a dormant state or not;
when the current state of the pump is in a dormant state, judging whether the preset awakening flow is a preset default awakening flow;
if yes, setting the pushing and sweeping speed as a preset default speed, setting the step length of the pushing and sweeping step as 10% of the total pushing and sweeping step length, setting the initial suction and discharge range as 10% of the total suction and discharge range, and completing a group of suction and discharge operations;
setting a middle suction and discharge range in each group of suction and discharge operation according to the step length of the push-broom step and a first preset increasing rule, and performing suction and discharge cycle operation according to the middle suction and discharge range and the preset default speed;
setting the final suction and discharge range as the total suction and discharge range, completing a group of suction and discharge operations, completing the awakening and starting of the pump, and setting the dormant state as false.
Further, the method comprises the following steps: when the current state of the pump is in the dormant state, judging whether the current state is a default awakening process, and then further comprising:
if not, setting the push-broom speed as a preset self-defined push-broom speed, setting the step length of the push-broom step as a preset self-defined push-broom step length, setting the initial suction and discharge range as 10% of the total suction and discharge range, and completing a group of suction and discharge operations;
setting a middle self-defined suction and discharge range in each group of suction and discharge operation according to the step length of the push-broom step and a second preset increasing rule, and performing suction and discharge cycle operation according to the middle self-defined suction and discharge range and the preset self-defined push-broom speed;
setting the final suction and discharge range as the total suction and discharge range, completing one group of suction and discharge operation, completing the awakening and starting of the pump, and setting the dormant state as false.
Further, the control method of the plunger pump further comprises:
the main control module sends a dormancy instruction to the pump driving control module, and the pump driving control module sends a liquid absorption request instruction to the main control module;
when the pump driving control module receives a liquid suction permission instruction, full-scale liquid suction is started, and a liquid suction completion state instruction and a liquid discharge request instruction are sent to the main control module;
when the pump driving control module receives a liquid discharge permission instruction, starting full-scale liquid discharge and sending a liquid discharge completion state;
the pump enters a sleep state and sets the sleep state flag to true.
The invention adopts another technical scheme for solving the technical problem as follows: a storage medium, wherein the storage medium stores a computer program executable for implementing the control method of a plunger pump as described above.
The invention provides a plunger pump, a control method of the plunger pump and a storage medium, wherein the plunger pump comprises: the pump comprises a pump body, wherein a plunger cavity is formed in the axis of the pump body; the pump head is arranged on the pump body, and an inner cavity of the pump head is formed in the pump head; a plunger disposed in the plunger chamber and the pump head inner chamber; the sealing mechanism is arranged between the pump head and the pump body and sleeved on the peripheral surface of the plunger; and the crystal pushing and sweeping rings are arranged between the sealing mechanism and the pump body and are sleeved on the outer peripheral surface of the plunger. It can be understood, through establish a plurality of crystallization on the plunger and push away and sweep the ring, make the plunger pushes away when the imbibition through sealing mechanism and crystallization in proper order and sweeps the ring, then the plunger certainly the crystallization pushes away sweeps behind the salt solution crystallization that ring department oozed, plunger orientation during flowing back the pump head inner chamber removes, and the plunger surface pushes away through the crystallization in proper order and sweeps ring, sealing mechanism, just the crystallization that appears on the plunger surface is by the crystallization pushes away sweeps the ring and clears away, and then makes the contact sealing mechanism's plunger surface does not have the crystallization, and then effectual protection sealing mechanism, low-cost and low resistance under, the guarantee the sealing performance and the accurate nature of plunger pump.
Drawings
Fig. 1 is a schematic perspective view of a plunger pump provided in the present invention;
FIG. 2 is a schematic cross-sectional view of a plunger pump provided in the present invention;
FIG. 3 is a partially cut-away schematic view of a plunger pump provided in the present invention;
FIG. 4 is another schematic partial cross-sectional view of a plunger pump provided in the present invention;
FIG. 5 is a flow chart schematic block diagram of a control method of the plunger pump provided in the present invention;
FIG. 6 is a flow schematic block diagram of a portion of the flow of a method of controlling a plunger pump provided in the present invention;
FIG. 7 is a block flow diagram illustrating a method of controlling a plunger pump in accordance with an embodiment of the present invention;
FIG. 8 is a block flow schematic diagram of another embodiment of a method of controlling a plunger pump provided in the present invention;
description of reference numerals:
10. a plunger pump; 11. a pump body; 12. a pump head; 13. a plunger; 14. a sealing mechanism; 15. crystallizing the sweeping ring; 16. a transmission mechanism; 17. a drive controller; 111. a plunger cavity; 121. the inner cavity of the pump head; 141. an O-shaped sealing ring; 142. a primary seal ring; 151. a push-broom ring body; 152. pushing and sweeping the cutting edge; 153. a connecting portion; 161. a motor; 162. a screw rod; 163. a slide block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Due to its small size and high precision, micro plunger pumps (mainly plunger pumps) are widely used in many precision instruments including IVD (in vitro diagnostic products). The seal in a plunger pump is a dynamic seal and the relative movement between the plunger and seal is also required to maintain a good seal. The sealing performance is particularly important for a precise plunger pump, and the leakage quantity directly determines the precision grade of the precise plunger pump. Under the same configuration, the sealing performance is increased, the abrasion is increased, and the service life is shortened. With the development of the times, higher service life requirements are put forward on the precision plunger pump. This need is particularly acute and acute when delivering saline solutions. Salt solutions, especially concentrated salt solutions, tend to crystallize. Once leakage occurs, the saline solution remaining on the plunger surface can crystallize, causing damage to the seal, further exacerbating the leakage, creating more crystallization, and initiating the vicious circle.
However, the current solutions to the leakage problem of the plunger pump mainly include: the plunger pump adopts different sealing structures, particularly the self-adaptive sealing structure, when slight abrasion occurs, the abrasion loss can be compensated, the leakage amount can be reduced to a certain extent, and the service life of the plunger pump is prolonged; however, the saline solution is not effective because the position of the leakage point or the leakage point is not determined, even if the leakage point or the leakage point is distributed on the surface of the plunger, and therefore the position of the crystal is also uncertain, so that the abrasion amount of the sealing element is not uniform, and more often, the abrasion of one or more points, and the self-adaptive sealing structure based on the uniform compensation principle is useless; 2. an online cleaning process is added, when the plunger pump absorbs liquid, part of the plunger is exposed in the air, the water on the plunger evaporates to cause salt crystallization and precipitation, at the moment, if the plunger pump is forcibly started, crystallized particles can be caused to contact with the sealing ring, so that the sealing member is scratched, a cleaning channel is added outside the sealing ring of the plunger pump, deionized water flows through the cleaning channel, and the clean water can dissolve the crystallized particles on the plunger to prevent the crystallized particles from scratching the sealing ring; 3. the double-sealing structure is used, namely an additional seal is added outside the existing sealing structure, the situation is only equivalent to a larger sealing structure, and is equivalent to the variation of the scheme 2, the service life can be prolonged to a certain extent, but the defects are obvious, on one hand, the sealing principle is not changed, and the abrasion effect is not improved; on the other hand, a sealing structure is added, so that the frictional resistance is increased, and a larger driving force is required; 4. the design seems reasonable, but for a precise plunger pump, the leakage means precision loss, once leakage begins, crystals appear on the plunger, and the crystals can further accelerate the abrasion of the seal, enter the tail end of a bathtub curve in a short time and rapidly fail. This design also does not extend the life of the plunger pump.
Based on the problems of poor anti-abrasion effect, complex structure, difficult maintenance, large running resistance and low precision of a sealing structure of a plunger pump in the prior art, the invention provides a plunger pump, a control method of the plunger pump and a storage medium, wherein a plurality of crystallization push-broom rings are sleeved on a plunger, so that the plunger sequentially passes through a sealing mechanism and the crystallization push-broom rings during liquid suction, then a saline solution seeps from the crystallization push-broom rings for crystallization, the plunger moves towards an inner cavity of a pump head during liquid discharge, the surface of the plunger sequentially passes through the crystallization push-broom rings and the sealing mechanism, crystals separated from the surface of the plunger are removed by the crystallization push-broom rings, and further the surface of the plunger contacting with the sealing mechanism is free of crystals, so that the sealing mechanism is effectively protected, and the sealing performance and the precision of the plunger pump are guaranteed under the conditions of low cost and low resistance; for details, reference will be made to the following embodiments.
Referring to fig. 1 and 2 in combination, a first embodiment of the present invention provides a plunger pump 10 for a precision instrument, comprising: the device comprises a pump body 11, a pump head 12, a plunger 13, a sealing mechanism 14 and a plurality of crystallization push-broom rings 15; a plunger cavity 111 is formed in the axis of the pump body 11; the pump head 12 is arranged on the pump body 11, and the pump head 12 is provided with a pump head inner cavity 121; the plunger 13 is disposed in the plunger chamber 111 and the pump head inner chamber 121; the sealing mechanism 14 is disposed between the pump head 12 and the pump body 11, and the sealing mechanism 14 is sleeved on the outer peripheral surface of the plunger 13; the plurality of crystal push-broom rings 15 are all arranged between the sealing mechanism 14 and the pump body 11, and the plurality of crystal push-broom rings 15 are all sleeved on the outer peripheral surface of the plunger 13.
It can be understood that, by sleeving a plurality of crystallization sweeping rings 15 on the plunger 13, specifically, the number of the crystallization sweeping rings 15 is set to be 1 (see fig. 2), 2 (see fig. 3), 3 (see fig. 4) or more; when the plunger 13 absorbs liquid, the plunger 13 sequentially passes through the sealing mechanism 14 and the crystallization push-broom ring 15, then after a part of salt solution seeped out from the crystallization push-broom ring 15 is crystallized, when the plunger 13 moves towards the pump head inner cavity 121 during liquid discharging, the surface of the plunger 13 sequentially passes through the crystallization push-broom ring 15 and the sealing mechanism 14, crystals precipitated on the surface of the plunger 13 are removed by the crystallization push-broom ring 15, and then no crystals exist on the surface of the plunger 13 contacting the sealing mechanism 14, so that the sealing mechanism 14 is effectively protected, and the sealing performance and the accuracy of the plunger pump are ensured under the conditions of low cost and low resistance; through the number of the crystal push-broom rings 15 is set to be a plurality of, the cleaning effect of the plunger 13 is effectively improved, the service life of the sealing mechanism 14 is prolonged, and the operation precision of the plunger pump 10 is guaranteed.
Referring to fig. 3, in other embodiments, the crystallized push-broom ring 15 comprises: a push-broom ring body 151, a push-broom cutting edge 152 and a connecting portion 153; the push-broom ring body 151 is disposed between the seal mechanism 14 and the pump body 11; the pushing and sweeping cutting edge 152 is sleeved on the plunger 13; the connecting portion 153 is disposed between the sweeping cutting edge 152 and the sweeping ring body 151.
It can be understood that, by setting the crystal sweeping ring as the pushing sweeping ring body 151, the pushing sweeping cutting edge 152 and the connecting portion 153, it can be ensured that the crystal sweeping ring 15 can effectively clean the crystal on the plunger 13, and it can be prevented that the crystal sweeping ring 15 causes too much resistance to the plunger 13, especially when the number of the crystal sweeping rings 15 is set to 2 or more, it is ensured that the plunger pump 10 runs with high precision for a long time.
Referring to fig. 2 in combination, in other embodiments, the sealing mechanism 14 includes: an O-ring 141 and a main ring 142; the main seal 142 is disposed between the pump head 12 and the pump body 11; the O-ring 141 is disposed between the main seal ring 142 and the crystal push-broom ring 15, and the main seal ring 142 is sleeved on the plunger 13. It can be understood that the sealing mechanism 14 is provided with the O-ring 141 and the main seal 142, so that the sealing performance of the pump can be effectively guaranteed.
In other embodiments, the plunger pump 10 further comprises: a transmission 16 and a drive controller 17; the transmission mechanism 16 is disposed at an end of the pump body 11 away from the pump head 12; the drive controller 17 is electrically connected to the transmission mechanism 16.
It can be understood that the transmission mechanism 16 is used for driving the plunger 13 to make a linear reciprocating motion in the plunger cavity 111 and the pump head inner cavity 121, so that the plunger pump 10 performs a high-precision suction and discharge operation; by arranging the driving controller 17 and controlling the driving controller 17 to be electrically connected with the transmission mechanism 16, high-precision control of the plunger pump 10 can be guaranteed.
In other embodiments, the transmission mechanism 16 includes: a motor 161, a screw 162, and a slider 163; the motor 161 is disposed at an end of the pump body 11 away from the pump head 12; one end of the screw 162 is connected with the motor 161; one end of the slider 163 is connected to the screw 162, and the other end of the slider 163 is connected to the plunger 13.
It is understood that by providing the transmission mechanism 16 as the motor 161, the lead screw 162 and the slider 163; the electrode is electrically connected with the driving controller 17, the electrode is controlled to operate by controlling the driving controller 17, and then the electrode drives the screw rod 162 to rotate forward and backward, so that the sliding block 163 and the plunger 13 are driven to do linear reciprocating motion relative to the screw rod 162, and the plunger pump 10 is enabled to complete suction and discharge operation.
Referring to fig. 5, a second embodiment of the present invention provides a method S10 for controlling a plunger pump according to the first embodiment of the present invention, which includes:
step S110, receiving a pump starting instruction, and inquiring the current state of the pump by a main control module;
and step S120, when the current state of the pump is in a dormant state, the pump is started according to a preset awakening process.
It can be understood that the control method of the plunger pump provided by the invention is realized based on the plunger pump in the first embodiment of the invention, and the operation of the plunger pump is controlled by the control method, so that the long service life and high-precision operation of the plunger pump are ensured. It should be noted that the salt solution is exposed to air to precipitate crystals, and the possibility of crystals adhering to the surface of the plunger leaking out of the plunger during the start-up of the plunger pump is the greatest; therefore, according to the control method of the plunger pump provided by the application, after a pump starting instruction is received, the main control module inquires the current state of the pump, then judges whether the current state of the pump is in a dormant state (the pump is in the dormant state by default when not running), and further finishes the starting of the plunger pump according to a preset flow when the pump is in the dormant state; and further, the sealing mechanism can be effectively prevented from being damaged by crystallization on the plunger when the plunger pump is started.
In some embodiments, a plunger pump control system under the control method framework of the plunger pump includes a power supply, a plunger pump drive control module, a plunger pump and a main control module, wherein the power supply provides energy for the plunger pump drive control module, and the plunger pump drive control module sends a control signal to the plunger pump and queries and reads the current state of the plunger pump; and the plunger pump driving control module is in communication connection with the main control module. It can be understood that the master control module controls the plunger pump drive control module, and the plunger pump drive control module controls the plunger pump; the main control module, the plunger pump driving control module and the plunger pump are in communication connection with each other; and then it is convenient right the plunger pump is controlled to guarantee sealing performance and accurate performance of plunger pump.
Referring to fig. 6 in combination, in other embodiments: the step S110 specifically includes:
step S111, determining whether the current state of the pump is a sleep state;
in the step S112, when the current state of the pump is in the sleep state, it is determined whether the preset wakeup process is a preset default wakeup process;
step S113a, if yes, setting the push-broom speed as a preset default speed, setting the step length of the push-broom step as 10% of the total push-broom step length, setting the initial suction-discharge range as 10% of the total suction-discharge range, and completing a set of suction-discharge operations;
step S114a, setting a middle suction and discharge range in each group of suction and discharge operation according to the step length of the pushing and sweeping step and a first preset increasing rule, and performing suction and discharge cycle operation according to the middle suction and discharge range and the preset default speed;
and step S115a, setting the final suction and discharge range as the total suction and discharge range, completing a group of suction and discharge operations, completing the awakening and starting of the pump, and setting the dormant state as false.
It can be understood that, in the control method of the plunger pump provided in the present application, when the plunger pump is started, the current state of the plunger pump needs to be obtained first, and then the plunger pump is controlled to start and operate according to the current state of the plunger pump; it should be noted that, when the current state of the pump is not in the dormant state, the plunger pump is kept to continue to keep running in the current running state; meanwhile, when the current state of the pump is in a dormant state, judging that the preset awakening flow is a preset default awakening flow, if so, setting a push-broom speed as a default push-broom speed, setting the step length of a push-broom step as 10% of the total step length of the push-broom step, and setting 10% of the initial suction and discharge range, wherein the push-broom speed is the linear reciprocating motion speed of the plunger, the step length of the push-broom step is the moving distance of the plunger after each suction and discharge operation period of the plunger, and the total step length of the push-broom step is the moving distance of the plunger when the suction and discharge range is 100%; through control the plunger pump is when first group suction and discharge operation, controls 10% of total suction and discharge range, and then the effectual prevention the sealing mechanism who damages the plunger pump of crystallization on the plunger ensures the operation of plunger pump high accuracy.
Further, when the plunger pump finishes a first group of suction and discharge operations, the suction and discharge range in each group of suction and discharge operations is set according to the step length of the previously set pushing and sweeping step and a first preset increasing rule, and suction and discharge circulation operations are carried out according to the middle suction and discharge range and the preset default speed; specifically, the first preset increment rule is as follows: after each group of suction and discharge operations are finished, the push-broom step length is controlled to be increased by one push-broom step length, the push-broom speed is not convenient to default, the middle suction and discharge range is also increased by the suction and discharge step range corresponding to the push-broom step length, the suction and discharge range is sequentially increased, and the plunger pump is controlled to be gradually increased to the full range; finally, setting the final suction and discharge range as the total suction and discharge range, completing a group of suction and discharge operations, completing the awakening and starting of the pump, and setting the dormant state as false; it is known that the suction range and the discharge range of the plunger pump reach the total suction range and the discharge range at this time. Therefore, when the plunger pump is started under the preset default awakening flow, the plunger pump gradually performs partial total suction-discharge range operation until full-range operation is achieved. Specifically, in the default wake-up process, the default push-broom range and the default push-broom step length are both increased by 10%, that is, when the plunger pump performs the tenth group of push-broom operation, the plunger pump reaches full-range operation.
In other embodiments, step S112 is followed by:
step S113b, if not, setting the push-broom speed as a preset self-defined push-broom speed, setting the step length of a push-broom step as the step length of a preset self-defined push-broom step, setting the initial suction and discharge range as 10% of the total suction and discharge range, and completing a group of suction and discharge operations;
step S114b, setting a middle self-defined suction and discharge range in each group of suction and discharge operation according to the step length of the push-broom step and a second preset increasing rule, and performing suction and discharge cycle operation according to the middle self-defined suction and discharge range and the preset self-defined push-broom speed;
and step S115b, setting the final suction and discharge range as the total suction and discharge range, completing a group of suction and discharge operation, completing the awakening and starting of the pump, and setting the dormant state as false.
It can be understood that when the current state of the pump is in the dormant state, if the preset awakening flow is not the preset default awakening flow, the preset user-defined awakening flow is entered; specifically, push away and sweep speed and set up to predetermineeing self-defined speed of sweeping, push away and sweep the step and set up to predetermineeing self-defined step of sweeping, initial suction range sets up to the 10% of total suction range, and then makes the user can set up according to the demand plunger pump awaken the flow up, effectually prevents the sealing mechanism of the crystallization impairment plunger pump on the plunger guarantees when plunger pump high accuracy moves, satisfies user's various demands. Specifically, the step length of the preset custom push-broom step is set to be 20% or 30%, and the like; or, the step length of the preset custom push-broom step is set to be a multiple of the initial suction and discharge range, for example, 1.2 times, 1.3 times or 1.5 times.
Referring to fig. 7, in some embodiments, the method S20 for controlling the plunger pump includes:
step S200, preparing to start a plunger pump;
step S210, the master control module inquires the state of the pump;
step S220, determining whether the sleep mode is dormant, if so, performing step S230, otherwise, performing step S240;
step S230, starting a wakeup process;
step S240, normal driving;
step S250, determining whether the flow is a default wake-up flow, if so, performing step S260, and if not, performing step S270;
step S260, setting V w ＝V min Step = Step-default, and Step S280 is performed;
step S270, setting V w ＝V input Step = Step-iput, and Step S280 is executed;
step S280, setting R w =10% by V w Liquid absorption at a speed of 10 percent of the measuring range;
step S290, with V w The speed liquid drainage is 10% of the range;
step S300, setting suction and discharge range R w ＝R w +Step；
Step 310, judge R w If the value is greater than 100%, executing step S320, otherwise executing step S330;
step S320, setting R w =100%, and perform step S330;
step S330, with V w Velocity imbibition R w Measuring range;
step S340, with V w Velocity discharge liquid R w Measuring range;
step S350, judging R w Whether the content is less than 100%, if so, executing the step S300, otherwise, executing the step S360;
and S360, finishing awakening, and setting the sleep state label as false.
In addition, the V is w For sweeping speed, said V min To preset default speed, V input Setting a self-defined push-broom speed, wherein Step is the Step length of the push-broom Step, step-default is 10 percent of the total Step length of the push-broom, step-iput is the Step length of the pre-defined push-broom Step, and R w Is a suction and discharge range (comprising an initial suction and discharge range, an intermediate suction and discharge range and a final suction and discharge range).
In further embodiments, the control method of the plunger pump further comprises:
the main control module sends a dormancy instruction to the pump driving control module, and the pump driving control module sends a liquid absorption request instruction to the main control module;
when the pump driving control module receives a liquid suction permission instruction, full-scale liquid suction is started, and a liquid suction completion state instruction and a liquid discharge request instruction are sent to the main control module;
when the pump driving control module receives a liquid discharge permission instruction, starting full-scale liquid discharge and sending a liquid discharge completion state;
the pump enters the sleep state and sets the sleep state flag to true.
In the control method of the plunger pump provided in this embodiment, when the suction operation of the plunger pump is completed, the plunger pump enters a sleep state, so that the next start of the plunger pump is guaranteed.
Referring further to fig. 8, in some embodiments, the method S40 for controlling the plunger pump further includes:
step S400, receiving a sleep instruction sent by a main control module;
step S410, sending a liquid suction application to the main control module;
step S420, determining whether a master imbibition permission is received, if yes, performing step S430, otherwise, performing step S410;
step S430, imbibition in full range, sending imbibition completion status;
step S440, judging whether master control liquid drainage permission is received, if so, executing step S450, otherwise, executing step S430;
s450, full-scale liquid drainage, and sending a liquid suction completion state;
step S460, setting the sleep state flag to true, and entering the sleep state.
In the present embodiment, the pump driving control module executes the operation.
A third embodiment of the present invention provides a storage medium in which a computer program is stored, the computer program being executable for implementing the control method of the plunger pump as described in the first embodiment of the present invention; see in particular the first embodiment described above.
In summary, the present invention provides a plunger pump, a control method of the plunger pump, and a storage medium, wherein the plunger pump includes: the pump comprises a pump body, wherein a plunger cavity is formed in the axis of the pump body; the pump head is arranged on the pump body, and an inner cavity of the pump head is formed in the pump head; a plunger disposed in the plunger chamber and the pump head inner chamber; the sealing mechanism is arranged between the pump head and the pump body and sleeved on the peripheral surface of the plunger; and the crystal pushing and sweeping rings are arranged between the sealing mechanism and the pump body and are sleeved on the outer peripheral surface of the plunger. It can be understood, through a plurality of crystallization push-broom rings are established to the cover on the plunger, make the plunger pushes away when the imbibition, and the plunger pushes away through sealing mechanism and crystallization in proper order and sweeps the ring, then the plunger certainly the crystallization pushes away and sweeps behind the salt solution crystallization that ring department oozes, plunger orientation during the flowing back the pump head inner chamber removes, and the plunger surface pushes away through the crystallization in proper order and sweeps ring, sealing mechanism, just the crystallization that appears on the plunger surface is pushed away and is swept the ring and dispose, and then makes the contact sealing mechanism's plunger surface does not have the crystallization, and then effectual protection sealing mechanism, low-cost and low resistance under, the guarantee the sealing performance and the precision of plunger pump.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (4)
1. A control method for a plunger pump, characterized in that the plunger pump comprises: the pump comprises a pump body, wherein a plunger cavity is formed in the axis of the pump body; the pump head is arranged on the pump body, and an inner cavity of the pump head is formed in the pump head; a plunger disposed in the plunger chamber and the pump head inner chamber; the sealing mechanism is arranged between the pump head and the pump body and sleeved on the peripheral surface of the plunger; the crystal pushing and sweeping rings are arranged between the sealing mechanism and the pump body and are sleeved on the outer peripheral surface of the plunger; the crystallization sweeping ring comprises: a push-broom ring body disposed between the sealing mechanism and the pump body; the pushing and sweeping cutting edge is sleeved on the plunger; the connecting part is arranged between the push-broom cutting edge and the push-broom ring body; the number of the crystallization push-broom rings is not less than 2; the sealing mechanism includes: a primary seal ring disposed between the pump head and the pump body; the O-shaped sealing ring is arranged between the main sealing ring and the pump head, and the main sealing ring is sleeved on the plunger; the transmission mechanism is arranged at one end of the pump body, which is far away from the pump head; the driving controller is electrically connected with the transmission mechanism; the transmission mechanism includes: the motor is arranged at one end of the pump body, which is far away from the pump head; one end of the screw rod is connected with the motor; one end of the sliding block is in threaded connection with the screw rod, and the other end of the sliding block is connected with the plunger;
the control method of the plunger pump comprises the following steps:
receiving a pump starting instruction, and inquiring the current state of the pump by the main control module;
when the current state of the pump is in a dormant state, the pump is started according to a preset awakening flow;
when the current state of the pump is in the dormant state, the pump is started according to a preset awakening flow, and the method specifically comprises the following steps:
judging whether the current state of the pump is a dormant state or not;
when the current state of the pump is in a dormant state, judging whether the preset awakening flow is a preset default awakening flow;
if not, setting the push-broom speed as a preset self-defined push-broom speed, setting the step length of the push-broom step as a preset self-defined push-broom step length, setting the initial suction and discharge range as 10% of the total suction and discharge range, and completing a group of suction and discharge operations;
setting a middle self-defined suction and discharge range in each group of suction and discharge operation according to the step length of the push-broom step and a second preset increasing rule, and performing suction and discharge cycle operation according to the middle self-defined suction and discharge range and the preset self-defined push-broom speed;
setting the final suction and discharge range as the total suction and discharge range, completing a group of suction and discharge operations, completing the awakening and starting of the pump, and setting the dormant state as false.
2. The control method of the plunger pump according to claim 1, comprising: when the current state of the pump is in a dormant state, judging whether the preset awakening flow is a preset default awakening flow, and then further comprising:
if yes, setting the push-broom speed as a preset default speed, setting the step length of the push-broom step as 10% of the total step length of the push-broom, setting the initial suction and discharge range as 10% of the total suction and discharge range, and completing a group of suction and discharge operations;
setting a middle suction and discharge range in each group of suction and discharge operation according to the step length of the push-broom step and a first preset increasing rule, and performing suction and discharge cycle operation according to the middle suction and discharge range and the preset default speed;
setting the final suction and discharge range as the total suction and discharge range, completing a group of suction and discharge operations, completing the awakening and starting of the pump, and setting the dormant state as false.
3. The control method of the plunger pump according to claim 1, further comprising:
the main control module sends a dormancy instruction to the pump driving control module, and the pump driving control module sends a liquid absorption request instruction to the main control module;
when the pump driving control module receives a liquid suction permission instruction, full-scale liquid suction is started, and a liquid suction completion state instruction and a liquid discharge request instruction are sent to the main control module;
when the pump driving control module receives a liquid discharge permission instruction, starting full-scale liquid discharge and sending a liquid discharge completion state;
the pump enters the sleep state and sets the sleep state flag to true.
4. A storage medium, characterized in that the storage medium stores a computer program executable for implementing the method of controlling a plunger pump according to any one of claims 1-3.
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| CN117212133B (en) * | 2023-09-26 | 2024-04-19 | 深圳市恒永达科技股份有限公司 | Control method of precision plunger pump easy to exhaust bubbles |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013219284A1 (en) * | 2013-09-25 | 2015-03-26 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump for a fuel injection device of an internal combustion engine |
| CN107345516A (en) * | 2016-05-05 | 2017-11-14 | 博世汽车柴油系统有限公司 | Plunger seal ring and corresponding high pressure fuel pump for high pressure fuel pump |
| CN207847918U (en) * | 2018-02-12 | 2018-09-11 | 鲍春 | High-pressure slip-casting preventing plunger pump back leak piston structure easy to process |
| CN108518327A (en) * | 2018-03-31 | 2018-09-11 | 山东中探机械有限公司 | A kind of slush pump using split type plunger assembly |
| EP3431781A1 (en) * | 2017-07-21 | 2019-01-23 | Claverham Limited | Piston assembly |
| CN213063915U (en) * | 2020-09-03 | 2021-04-27 | 长沙弘信电子科技有限公司 | Double-layer sealing liquid leakage prevention structure plunger pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180136A (en) * | 2017-12-29 | 2018-06-19 | 浙江福立分析仪器股份有限公司 | A kind of infusion pump of liquid chromatograph and the method for reducing sealing surface wear |
-
2021
- 2021-11-29 CN CN202111433320.2A patent/CN114033665B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013219284A1 (en) * | 2013-09-25 | 2015-03-26 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump for a fuel injection device of an internal combustion engine |
| CN107345516A (en) * | 2016-05-05 | 2017-11-14 | 博世汽车柴油系统有限公司 | Plunger seal ring and corresponding high pressure fuel pump for high pressure fuel pump |
| EP3431781A1 (en) * | 2017-07-21 | 2019-01-23 | Claverham Limited | Piston assembly |
| CN207847918U (en) * | 2018-02-12 | 2018-09-11 | 鲍春 | High-pressure slip-casting preventing plunger pump back leak piston structure easy to process |
| CN108518327A (en) * | 2018-03-31 | 2018-09-11 | 山东中探机械有限公司 | A kind of slush pump using split type plunger assembly |
| CN213063915U (en) * | 2020-09-03 | 2021-04-27 | 长沙弘信电子科技有限公司 | Double-layer sealing liquid leakage prevention structure plunger pump |
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