CN118375583A - Pump set of rotary plunger pump and fluid proportion conveying method - Google Patents
Pump set of rotary plunger pump and fluid proportion conveying method Download PDFInfo
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- CN118375583A CN118375583A CN202410805952.4A CN202410805952A CN118375583A CN 118375583 A CN118375583 A CN 118375583A CN 202410805952 A CN202410805952 A CN 202410805952A CN 118375583 A CN118375583 A CN 118375583A
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- 239000012530 fluid Substances 0.000 title claims abstract description 100
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- 230000000712 assembly Effects 0.000 claims abstract description 34
- 238000000429 assembly Methods 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000007306 turnover Effects 0.000 claims description 38
- 238000005096 rolling process Methods 0.000 claims description 32
- 238000005452 bending Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 5
- 241000587161 Gomphocarpus Species 0.000 claims 1
- 210000005056 cell body Anatomy 0.000 description 18
- 230000033001 locomotion Effects 0.000 description 14
- 230000008569 process Effects 0.000 description 12
- 230000009471 action Effects 0.000 description 9
- 238000005086 pumping Methods 0.000 description 7
- 230000005489 elastic deformation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
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Abstract
The invention discloses a rotary plunger pump set and a fluid proportion conveying method, and relates to the technical field of fluid conveying equipment, wherein the rotary plunger pump set comprises a pump head assembly and a driving mechanism for driving the pump head assembly to act, the driving mechanism comprises a tooth transmission assembly, and the tooth transmission assembly comprises a plurality of driving gears with tooth meshing relationship; the number of the pump head assemblies is more than or equal to 2, and the driving ends of the pump head assemblies are connected with driving gears for driving the pump head assemblies to act; part of the pump head components are rotary plunger pumps or all the pump head components are rotary plunger pumps; the pump head assembly for the rotary plunger pump comprises a pump head assembly with the angle of the pump head capable of being independently adjusted. The fluid proportion conveying method is realized based on the pump group. The scheme can be used for the proportional delivery of different types of fluids, and is particularly suitable for the proportional mixing of different fluid components.
Description
Technical Field
The invention relates to the technical field of fluid conveying equipment, in particular to a rotary plunger pump set and a fluid proportion conveying method.
Background
In the food industry, the medical industry, the chemical industry, the pharmaceutical industry, the daily necessities industry and the like, the rotary plunger pump is an important form of a precise micro-liquid flow pump, and the basic composition of the rotary plunger pump is as provided in the patent literature with the application number of CN200720082409.8 provided by the applicant, and the scheme provided by the patent literature with the name of the rotary plunger pump is invented. The basic structure of the pump comprises a pump rod, a pump sleeve and a driving mechanism, wherein the front end of the pump rod is provided with a notch and is matched in the pump sleeve with high precision, the pump sleeve is provided with a connecting pipe for inlet and outlet, the rear end of the pump rod is connected to the driving mechanism for outputting rotary motion, and the specific connection position of the pump rod on the driving mechanism is eccentric relative to the rotary motion center of the driving mechanism. The specific working principle is as follows: when the driving mechanism rotates, under the action of the driving mechanism, the pump rod moves linearly and reciprocally in the pump sleeve along the axis of the pump sleeve and rotates, the reciprocating motion is pumping and extrusion actions of the pump, and the rotation is switching of the conduction relation between the inner volume cavity of the pump sleeve and the connecting pipes of the inlet and the outlet, and compared with the traditional piston pump, one of the characteristics is that the pump body is prevented from being matched with a one-way valve.
The flow rate adjustment method of the rotary plunger pump generally includes: the motion speed of the pump rod and the travel of the pump rod in the pump sleeve are adjusted, and the travel of the pump rod in the pump sleeve can be adjusted by adjusting the angle of the pump head, so that the purpose of adjusting the fluid flow output by the single rotation and reciprocation of the pump rod is achieved, as disclosed in patent application documents with application numbers of CN201822069211.7, CN202121394021.8 and the like.
In addition, as disclosed in the patent application CN202210134826.1, a constant-flow pump based on a rotary plunger pump is provided, and the basic principle of the constant-flow pump is that the constant-flow pump includes a plurality of pump heads of the rotary plunger pump, the pump heads move under the action of the same pumping motor and are configured to have a set phase difference, so that the constant-flow pump has more uniform fluid output or realizes continuous pumping without gaps in the working process.
In view of the significant role of rotary plunger pumps in industrial and other industries, there is a need for further improvements in the use of rotary plunger pumps to enable them to better serve the various industries.
Disclosure of Invention
Aiming at the technical problem of further improving the application of the rotary plunger pump, the invention provides a pump set of the rotary plunger pump and a fluid proportion conveying method. The scheme can be used for the proportional delivery of different types of fluids, and is particularly suitable for the proportional mixing of different fluid components.
Aiming at the problems, the rotary plunger pump set and the fluid proportion conveying method solve the problems through the following technical points: the rotary plunger pump set comprises a pump head assembly and a driving mechanism for driving the pump head assembly to act, wherein the driving mechanism comprises a tooth transmission assembly, and the tooth transmission assembly comprises a plurality of driving gears with tooth meshing relationship;
the number of the pump head assemblies is more than or equal to 2, and the driving ends of the pump head assemblies are connected with driving gears for driving the pump head assemblies to act;
part of the pump head components are rotary plunger pumps or all the pump head components are rotary plunger pumps;
the pump head assembly for the rotary plunger pump comprises a pump head assembly with the angle of the pump head capable of being independently adjusted.
When the scheme is specifically used, the pump head assembly is used for proportionally conveying two or more fluids, the pump head assemblies can be used for pumping different fluids in different modes of action, and can also be used for conveying the same fluid, and other pump head assemblies are used for conveying other fluids. In one specific implementation, the number of pump head assemblies is the same as the number of fluids to be delivered, each pump head assembly being responsible for delivery of one of the fluids; in a specific embodiment, two or more pump head assemblies are used for conveying the same fluid, at least one of the pump head assemblies is a rotary plunger pump with independently adjustable pump head angle, compared with a rotary plunger pump with independently adjustable pump head angle for conveying the fluid and adjusting the fluid flow, the method is more suitable for an application scene with large fluid flow and fine adjustment requirements on the fluid flow, the purpose of guaranteeing the flow adjustment precision is achieved, for example, one pump head assembly of the volumetric pump is kept constant in volume cavity all the time in the working process, the flow output of the pump head assembly is constant during the operation, and the other rotary plunger pump with adjustable pump head angle only distributes part of the fluid flow, so that the volume cavity of the rotary plunger pump is smaller, and more accurate flow adjustment quantity can be obtained when the pump head angle adjustment is carried out to adjust the flow. The different fluids may be several fluids with different components, or may be fluids with the same components and different temperatures.
In the scheme, the driving mechanism comprises a plurality of driving gears with tooth meshing relations, and each pump head assembly is driven to act through the driving gears, so that the tooth meshing relations can be utilized to enable the motion of each pump head assembly under the action of the driving mechanism to have synchronism, and under the condition that the pump head assemblies are used for conveying two or more fluids and parameters of the pump head assemblies are unchanged, the output quantity of each fluid can have a fixed proportion, and the purpose of conveying the fluid proportion is achieved.
Meanwhile, the technical scheme of the rotary plunger pump with the independently adjustable pump head angle in the pump head assembly is provided according to the requirement that the fluid proportion possibly exists in the fluid proportion conveying, and when the rotary plunger pump is specifically used, for example, under the condition that the working parameters of a driving mechanism are unchanged, the pump head assembly with the unchanged pump head assembly parameters still realizes the fluid conveying according to the original flow, and the flow of the rotary plunger pump with the adjusted pump head angle is changed, so that the fluid conveying proportion can be adjusted through the simple operation, and the proportion of different types of fluids in the proportion conveying process can be flexibly adjusted according to specific conveying requirements.
The pump set can realize the fluid proportion transportation and the concrete transportation proportion can be adjusted according to the actual demand, when the flow of the pump set is required to be adjusted, the working parameters of the driving mechanism are changed, and under the application, the movement of each pump head component is synchronous, so that the characteristics of the fluid proportion can be maintained.
Meanwhile, since the pump head assembly in the pump set is used for proportionally conveying two or more kinds of fluid, at least two pump head assemblies are provided with different fluid suction pipelines.
Meanwhile, in the pump head assembly, other pump head assemblies except the rotary plunger pump with the adjustable pump head angle can be any type of pump body, such as a centrifugal pump, but in order to ensure the flow configuration precision, a volumetric pump, such as a piston pump, a rotary plunger pump, a diaphragm pump and the like, is preferred, and the driving mechanism can convert the rotary motion of the driving gear into linear reciprocating motion according to the implementation form of the pump head assembly. The preferred application is that the pump head components are all rotary plunger pumps with adjustable pump head angles, so that the flow output of each pump head component can be adjusted under the condition that the working parameters of the driving mechanism are unchanged.
The angle of the pump head can be independently adjusted, namely: the angular adjustment of the pump head on the pump head assembly does not affect or interfere with other pump head assemblies.
As a further technical scheme of the rotary plunger pump set:
all pump head components are rotary plunger pumps, and the pump head angles of all pump head components can be independently adjusted. The pump head assembly is a preferable configuration scheme, and as described above, the mode can be applied to different pump head assemblies for pumping different fluids, and the flow rate of each fluid can be adjusted independently of other fluids, so that the purpose of adjusting the fluid conveying proportion is achieved.
In specific implementation, the driving mechanism can be arranged to further comprise a driving motor, the driving motor is used as a power source for driving gears to rotate, the driving gears can be directly meshed with each other, and can also be indirectly meshed with each other through a transmission gear, and the driving mechanism is used as a technical scheme for conveniently assembling the pump set into a whole and realizing corresponding angle adjustment of a pump head, and further comprises a pump seat, wherein the pump seat comprises a first plate body and a second plate body which is rotatably connected with the first plate body;
The driving mechanism is fixed on the second plate body, the rotary plunger pump with the independently adjustable pump head angle is fixed on the first plate body, an angle adjusting component is further arranged between the first plate body and the second plate body, and the angle adjusting component is used for adjusting the included angle between the first plate body and the second plate body. In this scheme, driving motor, tooth drive assembly all are fixed in on the second plate body, and the pump head of rotatory plunger pump is fixed in on the first plate body, and the pump cover of specifically pump head is fixed in on the first plate body, and when the contained angle between first plate body and the second plate body changed under angle adjusting assembly's effect, the pump pole of pump head upper fit in the pump cover takes place to rotate in synchronization with first plate body, has like this, has changed the stroke of pump head in the course of the work promptly.
As a specific implementation form of the angle adjusting assembly, the angle adjusting assembly comprises a connecting screw, a thrust bearing, a turning seat, a sleeve and a screw rod;
The connecting screw is in threaded connection with one end of the sleeve, the screw rod is in threaded connection with the other end of the sleeve, and the connecting screw, the thrust bearing, the sleeve and the screw rod are coaxial;
The turnover seat is provided with a through hole, a structural body formed by the connecting screw and the sleeve penetrates through the through hole, and the nut end of the connecting screw and the end, connected with the screw, of the sleeve are positioned outside the turnover seat;
The thrust bearing is sleeved on the structural body and clamped between the nail cap end and the overturning seat, and the overturning seat is clamped between the thrust bearing and the sleeve;
The sleeve can rotate around the axis of the sleeve relative to the turnover seat;
One of the turning seat and the screw rod is rotatably connected with the first plate body, and the other is rotatably connected with the second plate body.
The scheme provides an angle adjusting part different from prior art, and specifically, when rotating the sleeve, the screw rod changes for telescopic extension, according to telescopic direction of rotation, this change is used for exerting thrust or pulling force for first plate body, second plate body for the angle of first plate body and second plate body changes, reaches the angle of the rotatory plunger pump head end of adjustment and in order to adjust the purpose of plunger stroke.
Meanwhile, the specific structural design of the angle adjusting assembly has the following characteristics: screw rod and sleeve threaded connection, connecting screw and sleeve threaded connection, turnover seat and thrust bearing centre gripping are between connecting screw and sleeve, and above scheme is simple structure not only, simultaneously, realizes each part tight fit in this angle modulation subassembly axial through connecting screw centre gripping thrust bearing and turnover seat, when exerting the moment so that it rotates for the sleeve, owing to the centre gripping has thrust bearing between nut end and the turnover seat, when connecting screw and sleeve are installed for having certain elastic deformation, because connecting screw is only the rolling friction that takes place on thrust bearing for turnover seat pivoted resistance, so for connecting screw, no matter be when sleeve corotation or reversal, the sleeve all can be very easy drive connecting screw rotates for the turnover seat, avoids causing connecting screw to loosen, so this scheme still has the characteristics that structural reliability is high on the basis of simple structure.
For the matching relation between the turnover seat and the sleeve, one end of the sleeve can be directly pressed on the side surface of the turnover seat, or the side surface of the turnover seat acts on the step surface of the sleeve, and the sleeve is provided with a cylinder section extending into the through hole. In the process of screwing the connecting screw into the sleeve, the specific screwing depth is controlled by the thrust bearing: the gasket at one end of the thrust bearing is supported on the overturning seat, and the nut end is supported by the gasket at the other end of the thrust bearing.
Preferably, in order to enable the connecting screw and the thrust bearing to keep ideal matching relation for a long time, the connecting screw is provided with a groove matched with a thrust bearing gasket, the thrust bearing gasket is provided with a groove matched with a nut end, the groove on the turnover seat is used for limiting the position of the thrust bearing in the radial direction of the groove, the groove on the gasket is used for limiting the position of the nut end in the radial direction of the groove, and therefore the contact between a rod section of the connecting screw and the gasket close to the turnover seat on the thrust bearing and the contact between the rod section and a retainer of the thrust bearing due to lateral movement of the thrust bearing can be effectively avoided. Further, the sleeve has the step surface and has a barrel section embedded in the through hole so as to avoid direct contact of the rod section with the flip seat by contact of the side wall of the sleeve with the wall of the through hole.
Preferably, to maintain a tight fit between the connecting screw and the sleeve, the axial force between the connecting screw and the sleeve may be maintained by an additional resilient pad, which may be disposed between the thrust bearing and the flip seat, or between the thrust bearing and the nut end.
Preferably, the sleeve is in a step shaft shape, one end of the sleeve, which is connected with the connecting screw, is embedded into the through hole, and the overturning seat is clamped between a shaft shoulder on the sleeve and the end part of the thrust bearing. The technical scheme is that the overturning seat is restrained at one end position in the axial direction of the sleeve through the step surface formed on the sleeve, and the sleeve section embedded in the through hole is used for avoiding the direct contact between the connecting screw rod section and the overturning seat. Because the whole sleeve rotates synchronously when torque is applied to the sleeve, the friction force between the sleeve and the overturning seat is easy to overcome and can not cause other adverse effects, and the outer diameter of the through hole is consistent with the inner diameter of the through hole, so that the sleeve is prevented from having a shaking gap relative to the overturning seat in the radial direction.
The turnover seat is rotatably connected to the second plate body and can rotate around the axis of the turnover seat relative to the second plate body;
The screw rod is rotatably connected to the first plate body, the screw rod can rotate around a rotating shaft perpendicular to the axis of the screw rod relative to the first plate body, and the rotating shaft is parallel to the axis of the overturning seat.
As described above, the side of the angle adjusting component provided with the turning seat is further provided with the connecting screw and the thrust bearing, and the free end of the screw rod can be rotatably connected to one of the plate bodies.
The first plate body is provided with a first groove body, and the second plate body is provided with a second groove body;
the overturning seat is arranged in the second groove body through a first rolling bearing, and the axis of the first rolling bearing is perpendicular to the axis of the connecting screw;
The screw rod is installed in the first groove body through a second rolling bearing, and the axis of the second rolling bearing is perpendicular to the axis of the connecting screw. In this scheme, utilize first cell body and second cell body are second antifriction bearing and first antifriction bearing respectively provide the installation space on the pump seat, realize the restraint of angle adjusting assembly on the pump seat, be a simple structure, convenient assembling's technical scheme. Meanwhile, by adopting the first rolling bearing and the second rolling bearing, the angle adjusting component can turn over relative to the pump seat in the extending and shortening process to the position of the rolling bearing, and the mode can not only keep the matching precision of the angle adjusting component and the pump seat for a long time, but also realize more flexible corresponding turning over and is beneficial to the angle adjusting precision of the pump head.
As a specific implementation manner, the second plate body is provided with a cross-shaped second groove body, the first rolling bearing and the overturning seat are embedded into the transverse groove of the second groove body, the longitudinal groove of the second groove body accommodates the sleeve, the thrust bearing and the connecting screw, and when the sleeve axially moves on the axis of the screw rod relative to the screw rod, the sleeve, the overturning seat and the thrust bearing overturn around the rotation center of the first rolling bearing. The second antifriction bearing sets up in the free end tip of screw rod, first cell body sets up to T type groove, and the transverse groove of first cell body is used for installing second antifriction bearing, and the longitudinal groove of first cell body is used for holding the screw rod. For the first antifriction bearing and the second antifriction bearing, when accomplishing the installation on first plate body, second plate body respectively through corresponding cell body, each accessible corresponds the tip constraint of horizontal groove on first cell body and the second cell body respectively in first cell body, second cell body length direction's position, so first antifriction bearing, second antifriction bearing respectively with turn over the seat, the screw rod all adopt simple coupling mechanism can, if first antifriction bearing, second antifriction bearing all is: the inner ring is in interference fit with a rotating shaft, the corresponding rotating shaft is in interference connection with the overturning seat or the screw rod, and the outer ring is clamped in the corresponding transverse groove.
Further, the device also comprises a second cover plate which is connected to the second plate body through screws and is used for closing the second groove body;
The first cover plate is connected to the first plate body through screws and used for sealing the first groove body. In this scheme the second apron is arranged in preventing to turn over the seat, first antifriction bearing is deviate from by the second cell body, first apron is arranged in preventing that second antifriction bearing from deviate from by the first cell body for improve the reliability of this structure.
To the scheme of realizing pump head angle regulation through extension or shorten angle adjustment subassembly as above, this scheme provides a concrete form of pump seat, the bottom side of pump seat is provided with the elasticity and bends, angle adjustment subassembly sets up the top side at the pump seat, first plate body and second plate body are through all connecting the elasticity bending on each and are formed rotatable relation of connection. In this scheme, when need adjust pump head angle, push or pulling force through angle adjusting component for first plate body and second plate body provides forces elasticity bending takes place elastic deformation in order to adapt to the distance change of the respective stress point of first plate body and second plate body, under such realization mode, can utilize the elastic deformation who takes place on elasticity bending to maintain the form of pump seat: the pump set is avoided in the course of the work, because vibrations etc. influence the stability of pump head angle.
In the prior art, a servo motor and a stepping motor are adopted as a driving motor for a pump for precisely conveying fluid, the working parameters of the driving motor can be controlled with high precision by adopting the existing control means, the specific working condition of a pump set can be reflected by the working parameters of the driving motor, and the reliability of the pump set is improved for avoiding misjudgment on monitoring the specific working condition of the pump set caused by electrical faults, mechanical faults and the like of a driving mechanism, and the pump set further comprises a sensor for monitoring the rotation state of the driving gear.
The scheme also discloses a fluid proportion conveying method based on the rotary plunger pump set according to any one of the above, in the method, each driving gear on the driving mechanism synchronously rotates, and each pump head component acts under the action of the driving gear connected with the driving gear;
The pump head assembly with the pump head angle capable of being independently adjusted pumps different fluid from the fluid pumped by any other pump head assembly;
When the fluid delivery proportion is required to be adjusted, the pump head angle of the pump head assembly with the pump head angle capable of being independently adjusted is adjusted. The method is a specific use method of the pump set in the process of applying the pump set to the fluid proportional conveying.
The invention has the following beneficial effects:
In the scheme, the driving mechanism comprises a plurality of driving gears which are in tooth meshing relationship with each other, so that the output quantity of each fluid can have fixed proportion under the condition that the pump head components are used for conveying two or more fluids and the parameters of the pump head components are unchanged, and the purpose of conveying the fluid proportion is achieved.
Meanwhile, according to the technical scheme, the rotary plunger pump with the independently adjustable pump head angle can adjust the fluid conveying proportion through simple operation in the pump head assembly according to the requirement that the fluid proportion possibly exists in the fluid proportion conveying process, so that the proportion of different types of fluids in the proportion conveying process can be flexibly adjusted according to specific conveying requirements.
Drawings
FIG. 1 is a side view of one embodiment of a rotary plunger pump set according to the present disclosure;
FIG. 2 is a cross-sectional view taken along the A-A direction of FIG. 1;
FIG. 3 is a front view of one embodiment of a rotary plunger pump set according to the present disclosure;
FIG. 4 is a cross-sectional view taken along the B-B direction of FIG. 3;
FIG. 5 is an assembly view of an angle adjustment assembly and a pump base in one embodiment of a rotary plunger pump set according to the present disclosure;
fig. 6 is a cross-sectional view of an angle adjustment assembly in one embodiment of a rotary plunger pump set according to the present disclosure.
Reference numerals in the drawings are respectively: 1. the connecting screw, 2, thrust bearing, 3, first antifriction bearing, 4, upset seat, 5, sleeve, 6, screw rod, 7, pivot, 8, second antifriction bearing, 9, first plate body, 10, second cell body, 11, second plate body, 12, first cell body, 13, driving motor, 14, tooth transmission subassembly, 15, pump head subassembly, 16, pump cover, 17, pump pole, 18, angle adjusting component, 19, elasticity bend.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples:
example 1:
As shown in fig. 1 to 6, the rotary plunger pump set comprises a pump head assembly 15 and a driving mechanism for driving the pump head assembly 15 to act, wherein the driving mechanism comprises a tooth transmission assembly 14, and the tooth transmission assembly 14 comprises a plurality of driving gears which have tooth meshing relationship with each other;
The number of the pump head assemblies 15 is more than or equal to 2, and the driving end of each pump head assembly 15 is connected with a driving gear for driving the pump head assembly 15 to act;
Part of the pump head components 15 are rotary plunger pumps or all the pump head components 15 are rotary plunger pumps;
The pump head assembly 15 for a rotary plunger pump includes a pump head assembly 15 with a pump head angle that is independently adjustable.
When the pump head assembly 15 is used in specific application, the pump head assembly 15 is used for delivering two or more fluids in proportion, and the pump head assemblies 15 can be used for pumping different fluids in different modes of action, or the pump head assemblies 15 can be used for delivering the same fluid, and the other pump head assemblies 15 are used for delivering other fluids. In one particular implementation, the number of pump head assemblies 15 is the same as the number of fluids to be delivered, each pump head assembly 15 being responsible for delivery of one of the fluids; in a specific embodiment, two pump head assemblies 15 are used to convey the same fluid, at least one pump head assembly 15 in the pump head assemblies 15 is a rotary plunger pump with independently adjustable pump head angle, compared with a rotary plunger pump with independently adjustable pump head angle which is used to convey the fluid and adjust the fluid flow, the method is more suitable for an application scene with large fluid flow and fine adjustment requirement on the fluid flow, so as to achieve the purpose of guaranteeing the flow adjustment precision, for example, the volume cavity of one pump head assembly 15 of a volumetric pump is always kept unchanged during the working process, the flow output of the pump head assembly 15 is constant during the operation, and the other rotary plunger pump with adjustable pump head angle only distributes part of the fluid flow, so the volume cavity of the rotary plunger pump is smaller, and more accurate flow adjustment can be obtained when the pump head angle is adjusted to adjust the flow. The different fluids may be several fluids with different components, or may be fluids with the same components and different temperatures.
In this scheme, because the driving mechanism includes a plurality of driving gears that have tooth meshing relationship each other to through the action of driving gear drive each pump head subassembly 15, like this, can utilize the tooth meshing relationship to make the motion of each pump head subassembly 15 under the effect of driving mechanism have synchronism, under the condition that adopts these pump head subassemblies 15 to be used for two kinds and more fluid delivery, pump head subassembly 15 parameter unchanged, can make the output of each fluid have fixed proportion, reaches fluid proportion delivery purpose.
Meanwhile, the technical scheme of the rotary plunger pump with the independently adjustable pump head angle in the pump head assembly 15 is provided according to the requirement that the fluid proportion possibly exists in the fluid proportion conveying, and when the rotary plunger pump is specifically used, for example, under the condition that the working parameters of a driving mechanism are unchanged, the pump head assembly 15 with the unchanged parameters of the pump head assembly 15 still realizes the fluid conveying according to the original flow, and the flow of the rotary plunger pump with the adjusted pump head angle is changed, so that the fluid conveying proportion can be adjusted through the simple operation, and the proportion of different types of fluids in the proportion conveying process can be flexibly adjusted according to specific conveying requirements.
The above only describes that the pump set can realize the fluid proportion delivery and the specific delivery proportion can be adjusted according to the actual requirement, when the flow of the pump set needs to be adjusted, the working parameters of the driving mechanism are changed, and under the application, the movement of each pump head assembly 15 is synchronous, so that the characteristics of the fluid proportion can be maintained.
Meanwhile, since the pump head assembly 15 in the present pump set is used for proportionally delivering two or more kinds of fluids, at least two pump head assemblies 15 have different fluid suction lines.
Meanwhile, in the pump head assembly 15, other pump head assemblies 15 than the rotary plunger pump with adjustable pump head angle may be any pump body, for example, a centrifugal pump, but in order to ensure the flow configuration precision, a volumetric pump, such as a piston pump, a rotary plunger pump, a diaphragm pump, etc., is preferred, and the driving mechanism may convert the rotary motion of the driving gear into, for example, a linear reciprocating motion according to the implementation form of the pump head assembly 15. The pump head assemblies 15 are preferably rotary plunger pumps with adjustable pump head angles, so that the flow output of each pump head assembly 15 can be adjusted under the condition that the working parameters of the driving mechanism are unchanged.
The angle of the pump head can be independently adjusted, namely: the angular adjustment of the pump head on the pump head assembly 15 does not affect other pump head assemblies 15 or interfere with other pump head assemblies 15.
Example 2:
This example was further refined on the basis of example 1:
All the pump head assemblies 15 are rotary plunger pumps, and the pump head angles of all the pump head assemblies 15 can be independently adjusted. The present solution is a preferred configuration of the pump head assembly 15, and as described above, such a manner may be applied to different pump head assemblies 15 for pumping different fluids, where the flow rate of each fluid may be adjusted independently of the other fluids, so as to achieve the purpose of adjusting the fluid delivery ratio.
Example 3:
This example was further refined on the basis of example 1:
In specific implementation, the driving mechanism can be arranged to further comprise a driving motor 13, the driving motor 13 is used as a power source for driving gears to rotate, the driving gears can be directly meshed with each other, and can also be indirectly meshed with each other through a transmission gear, and the driving mechanism is used as a technical scheme for conveniently assembling the pump group into a whole and realizing corresponding angle adjustment of a pump head, and further comprises a pump seat, wherein the pump seat comprises a first plate body 9 and a second plate body 11 rotatably connected with the first plate body 9;
The driving mechanism is fixed on the second plate 11, the rotary plunger pump with the independently adjustable pump head angle is fixed on the first plate 9, an angle adjusting assembly 18 is further arranged between the first plate 9 and the second plate 11, and the angle adjusting assembly 18 is used for adjusting the included angle between the first plate 9 and the second plate 11. In this scheme, driving motor 13, tooth drive assembly 14 all are fixed in on the second plate body 11, and the pump head of rotatory plunger pump is fixed in on the first plate body 9, and the pump cover 16 of pump head is fixed in on the first plate body 9 specifically, and when the contained angle between first plate body 9 and the second plate body 11 changes under the effect of angle modulation assembly 18, the pump pole 17 of pump head upper fit in pump cover 16 takes place to rotate in step with first plate body 9, like this, has changed the stroke of pump head in the course of the work promptly.
Example 4:
This example was further refined on the basis of example 3:
as a specific implementation form of the angle adjusting assembly 18, the angle adjusting assembly 18 comprises a connecting screw 1, a thrust bearing 2, a turnover seat 4, a sleeve 5 and a screw rod 6;
the connecting screw 1 is in threaded connection with one end of the sleeve 5, the screw rod 6 is in threaded connection with the other end of the sleeve 5, and the connecting screw 1, the thrust bearing 2, the sleeve 5 and the screw rod 6 are coaxial;
The turnover seat 4 is provided with a through hole, a structural body formed by the connecting screw 1 and the sleeve 5 penetrates through the through hole, and the nut end of the connecting screw 1 and the end, connected with the screw rod 6, of the sleeve 5 are positioned outside the turnover seat 4;
the thrust bearing 2 is sleeved on the structural body and clamped between the nut end and the overturning seat 4, and the overturning seat 4 is clamped between the thrust bearing 2 and the sleeve 5;
The sleeve 5 can rotate around the axis of the sleeve 5 relative to the turnover seat 4;
One of the turning seat 4 and the screw rod 6 is rotatably connected with the first plate 9, and the other is rotatably connected with the second plate 11.
The present solution provides an angle adjusting assembly 18 different from the prior art, specifically, when rotating the sleeve 5, the extension length of the screw 6 relative to the sleeve 5 changes, and according to the rotation direction of the sleeve 5, the change is used for applying a pushing force or a pulling force to the first plate 9 and the second plate 11, so that the angle between the first plate 9 and the second plate 11 changes, and the purpose of adjusting the angle of the pump head end of the rotary plunger pump to adjust the plunger stroke is achieved.
Meanwhile, the specific structural design of the angle adjusting assembly 18 has the following characteristics: the screw rod 6 is in threaded connection with the sleeve 5, the connecting screw 1 is in threaded connection with the sleeve 5, the overturning seat 4 and the thrust bearing 2 are clamped between the connecting screw 1 and the sleeve 5, the scheme is simple in structure, meanwhile, the thrust bearing 2 is clamped through the connecting screw 1, the overturning seat 4 is tightly matched with each part on the axial direction of the angle adjusting assembly 18, when torque is applied to the sleeve 5 to enable the sleeve 5 to rotate, the thrust bearing 2 is clamped between the nut end and the overturning seat 4, when the connecting screw between the connecting screw 1 and the sleeve 5 is installed to have certain elastic deformation, because the rotating resistance of the connecting screw 1 relative to the overturning seat 4 is only rolling friction on the thrust bearing 2, the sleeve 5 can drive the connecting screw 1 to rotate relative to the overturning seat 4 very easily no matter the sleeve 5 rotates positively or reversely, the connecting screw 1 is prevented from being loosened, and the scheme has the characteristic of high structural reliability on the basis of simple structure.
For the matching relation between the turnover seat 4 and the sleeve 5, one end of the sleeve 5 can be directly pressed on the side surface of the turnover seat 4, or the side surface of the turnover seat 4 acts on the step surface of the sleeve 5, and the sleeve 5 is provided with a barrel section extending into the through hole. During the screwing of the connecting screw 1 into the sleeve 5, the specific screwing depth is controlled by the thrust bearing 2: the gasket at one end of the thrust bearing 2 is supported on the overturning seat 4, and the nut end is supported by the gasket at the other end of the thrust bearing 2.
Preferably, in order to maintain the ideal matching relationship between the connecting screw 1 and the thrust bearing 2 for a long time, the overturning seat 4 is provided with a groove matched with a gasket of the thrust bearing 2, the gasket of the thrust bearing 2 is provided with a groove matched with a nut end, the groove on the overturning seat 4 is used for limiting the position of the thrust bearing 2 in the radial direction of the groove, the groove on the gasket is used for limiting the position of the nut end in the radial direction of the groove, and thus the contact between a rod section of the connecting screw 1 and the gasket on the thrust bearing 2, which is close to the overturning seat 4, and the contact between the rod section and a retainer of the thrust bearing 2 caused by the lateral movement of the thrust bearing 2 can be effectively avoided. Further, the sleeve 5 has the stepped surface and has a barrel section embedded in the through hole to avoid direct contact of the rod section with the flip seat 4 by the sidewall of the sleeve 5 contacting the wall of the through hole.
Preferably, to maintain a tight fit between the connecting screw 1 and the sleeve 5, the axial force between the connecting screw 1 and the sleeve 5 may be maintained by an additional elastic pad, which may be provided between the thrust bearing 2 and the tilting mount 4, or between the thrust bearing 2 and the nut end.
Preferably, the sleeve 5 is in a step shaft shape, one end of the sleeve 5, which is used for being connected with the connecting screw 1, is embedded into the through hole, and the overturning seat 4 is clamped between a shaft shoulder on the sleeve 5 and the end part of the thrust bearing 2. The technical scheme is that the overturning seat 4 is restrained at one end position in the axial direction of the sleeve 5 through the step surface formed on the sleeve 5, and the barrel section embedded in the through hole through the sleeve 5 is adopted, so that the technical scheme that the rod section of the connecting screw 1 is directly contacted with the overturning seat 4 is avoided. Because the sleeve 5 rotates synchronously as a whole when torque is applied to the sleeve 5, the friction force between the sleeve 5 and the turnover seat 4 is easy to overcome and does not cause other adverse effects, and the preferred application is that the outer diameter of the through hole is consistent with the inner diameter of the through hole so as to avoid the sleeve 5 from having a shaking gap relative to the turnover seat 4 in the radial direction.
Example 5:
this example was further refined on the basis of example 4:
the turnover seat 4 is rotatably connected to the second plate 11, and the turnover seat 4 can rotate around the axis of the turnover seat 4 relative to the second plate 11;
The screw rod 6 is rotatably connected to the first plate 9, the screw rod 6 can rotate around a rotating shaft 7 perpendicular to the axis of the screw rod 6 relative to the first plate 9, and the rotating shaft 7 is parallel to the axis of the overturning seat 4.
As described above, the side of the angle adjusting assembly 18 provided with the tilting mount 4 is further provided with the connection screw 1 and the thrust bearing 2, and the free end of the screw 6 can be rotatably connected to one of the plates, and meanwhile, when the second plate 11 is used for installing the driving mechanism, the second plate 11 is preferably set to have larger dimension parameters than the first plate 9 for installing the pump head, based on which, for more reasonable use of the pump mount, the above arrangement mode of the angle adjusting assembly 18 and the pump mount is set.
Example 6:
This example was further refined on the basis of example 5:
The first plate body 9 is provided with a first groove body 12, and the second plate body 11 is provided with a second groove body 10;
the overturning seat 4 is arranged in the second groove body 10 through a first rolling bearing 3, and the axis of the first rolling bearing 3 is perpendicular to the axis of the connecting screw 1;
The screw 6 is mounted in the first groove 12 by a second rolling bearing 8, the axis of the second rolling bearing 8 being perpendicular to the axis of the connecting screw 1. In this scheme, utilize first cell body 12 and second cell body 10 provide the installation space on the pump seat for second antifriction bearing 8 and first antifriction bearing 3 respectively, realize the restraint of angle adjusting assembly 18 on the pump seat, be a simple structure, convenient assembling's technical scheme. Meanwhile, by adopting the first rolling bearing 3 and the second rolling bearing 8, the angle adjusting component 18 can turn over relative to the pump seat in the extending and shortening processes at the positions of the rolling bearings, and the mode can not only keep the matching precision of the angle adjusting component 18 and the pump seat for a long time, but also realize the corresponding turning over more flexibly, thereby being beneficial to the angle adjusting precision of the pump head.
As a specific implementation, a second groove body 10 is provided on the second plate body 11 in a cross shape, the first rolling bearing 3 and the overturning seat 4 are embedded in a transverse groove of the second groove body 10, and a longitudinal groove of the second groove body 10 accommodates the sleeve 5, the thrust bearing 2 and the connecting screw 1, and when the sleeve 5 moves axially on the axis of the screw 6 relative to the screw 6, the sleeve 5, the overturning seat 4 and the thrust bearing 2 overturn around the rotation center of the first rolling bearing 3. The second rolling bearing 8 is arranged at the free end of the screw rod 6, the first groove body 12 is a T-shaped groove, the transverse groove of the first groove body 12 is used for installing the second rolling bearing 8, and the longitudinal groove of the first groove body 12 is used for accommodating the screw rod 6. For the first rolling bearing 3 and the second rolling bearing 8, when the installation on the first plate 9 and the second plate 11 is completed through the corresponding grooves, the positions of the first groove 12 and the second groove 10 in the length direction of the first groove 12 and the second groove 10 can be restrained through the end parts of the transverse grooves on the corresponding first groove 12 and the second groove 10, so that the first rolling bearing 3 and the second rolling bearing 8 and the overturning seat 4 and the screw 6 can be simply connected, for example, the first rolling bearing 3 and the second rolling bearing 8 are: the inner ring is in interference fit with a rotating shaft 7, the corresponding rotating shaft 7 is in interference connection with the overturning seat 4 or the screw rod 6, and the outer ring is clamped in the corresponding transverse groove.
Further, the device also comprises a second cover plate which is connected to the second plate body 11 through screws and is used for closing the second groove body 10;
And a first cover plate which is connected to the first plate body 9 through screws and is used for closing the first groove body 12. In this scheme the second apron is arranged in preventing to turn over and is deviate from in the seat 4, the first antifriction bearing 3 by the second cell body 10, the first apron is arranged in preventing that the second antifriction bearing 8 from deviate from in the first cell body 12 for improve the reliability of this structure.
Example 7:
this example was further refined on the basis of example 4:
For the scheme of realizing the angle adjustment of the pump head through the extension or shortening angle adjusting component 18, the scheme provides a concrete form of pump seat, the bottom side of pump seat is provided with the elasticity 19 of bending, angle adjusting component 18 sets up the top side at the pump seat, first plate body 9 and second plate body 11 form rotatable relation of connection through the elasticity 19 of all being connected on each. In this scheme, when need adjust pump head angle, push or pulling force that the angle adjusting component 18 provided for first plate body 9 and second plate body 11 forces elasticity bending 19 takes place elastic deformation in order to adapt the distance change of the respective stress point of first plate body 9 and second plate body 11, under such realization mode, can utilize the elastic deformation who takes place on elasticity bending 19 to maintain the form of pump seat: the pump set is avoided in the course of the work, because vibrations etc. influence the stability of pump head angle.
Example 8:
This example was further refined on the basis of example 1:
In the prior art, a servo motor and a stepping motor are adopted as a driving motor 13 for a pump for precisely conveying fluid, the working parameters of the driving motor 13 can be controlled with high precision by adopting the existing control means, the specific working condition of the pump set can be reflected by the working parameters of the driving motor 13, and the reliability of the pump set is improved for avoiding misjudgment on monitoring the specific working condition of the pump set caused by electrical faults, mechanical faults and the like of a driving mechanism, and the pump set further comprises a sensor for monitoring the rotation state of a driving gear.
Example 9:
the present embodiment provides a method for delivering a fluid in proportion based on the rotary plunger pump set in embodiment 1, based on embodiment 1, in which each driving gear on the driving mechanism rotates synchronously, and each pump head assembly 15 acts under the action of the driving gear connected thereto;
Wherein the pump head assembly 15, which is independently adjustable by the pump head angle, pumps a fluid different from the fluid pumped by any other pump head assembly 15;
When the fluid delivery ratio adjustment is required, the pump head angle of the pump head assembly 15, of which the pump head angle is independently adjustable, is adjusted. The method is a specific use method of the pump set in the process of applying the pump set to the fluid proportional conveying.
The foregoing is a further detailed description of the invention in connection with specific preferred embodiments, and it is not intended that the invention be limited to these descriptions. Other embodiments of the invention, which are apparent to those skilled in the art to which the invention pertains without departing from its technical scope, shall be covered by the protection scope of the invention.
Claims (10)
1. The rotary plunger pump set comprises a pump head assembly (15) and a driving mechanism for driving the pump head assembly (15) to act, and is characterized in that the driving mechanism comprises a tooth transmission assembly (14), and the tooth transmission assembly (14) comprises a plurality of driving gears which are in tooth meshing relationship with each other;
the number of the pump head assemblies (15) is more than or equal to 2, and the driving end of each pump head assembly (15) is connected with a driving gear for driving the pump head assembly (15) to act;
part of the pump head components (15) are rotary plunger pumps or all the pump head components (15) are rotary plunger pumps;
The pump head assembly (15) of the rotary plunger pump comprises the pump head assembly (15) with the pump head angle capable of being independently adjusted.
2. A rotary plunger pump set as claimed in claim 1, characterised in that all of the pump head assemblies (15) are rotary plunger pumps, the pump head angles of each pump head assembly (15) being independently adjustable.
3. The rotary plunger pump set according to claim 1 or 2, further comprising a pump mount comprising a first plate (9) and a second plate (11) rotatably connected to the first plate (9);
The driving mechanism is fixed on the second plate body (11), the rotary plunger pump with the independently adjustable pump head angle is fixed on the first plate body (9), an angle adjusting component (18) is further arranged between the first plate body (9) and the second plate body (11), and the angle adjusting component (18) is used for adjusting the included angle between the first plate body (9) and the second plate body (11).
4. A rotary plunger pump set as claimed in claim 3, characterized in that the angle adjustment assembly (18) comprises a connection screw (1), a thrust bearing (2), a tilting mount (4), a sleeve (5) and a screw (6);
The connecting screw (1) is in threaded connection with one end of the sleeve (5), the screw rod (6) is in threaded connection with the other end of the sleeve (5), and the connecting screw (1), the thrust bearing (2), the sleeve (5) and the screw rod (6) are coaxial;
the turnover seat (4) is provided with a through hole, a structural body formed by the connecting screw (1) and the sleeve (5) penetrates through the through hole, and the nut end of the connecting screw (1) and the end, connected with the screw (6), of the sleeve (5) are positioned outside the turnover seat (4);
The thrust bearing (2) is sleeved on the structural body and clamped between the nail head end and the turnover seat (4), and the turnover seat (4) is clamped between the thrust bearing (2) and the sleeve (5);
the sleeve (5) can rotate around the axis of the sleeve (5) relative to the turnover seat (4);
One of the turnover seat (4) and the screw (6) is rotatably connected with the first plate body (9), and the other is rotatably connected with the second plate body (11).
5. The rotary plunger pump set according to claim 4, wherein the turning base (4) is rotatably connected to the second plate body (11), and the turning base (4) is rotatable relative to the second plate body (11) about the axis of the turning base (4);
The screw rod (6) is rotatably connected to the first plate body (9), the screw rod (6) can rotate around a rotating shaft perpendicular to the axis of the screw rod (6) relative to the first plate body (9), and the rotating shaft is parallel to the axis of the turning seat (4).
6. The rotary plunger pump set according to claim 5, characterized in that the first plate body (9) is provided with a first groove body (12), and the second plate body (11) is provided with a second groove body (10);
The overturning seat (4) is arranged in the second groove body (10) through a first rolling bearing (3), and the axis of the first rolling bearing (3) is perpendicular to the axis of the connecting screw (1);
The screw rod (6) is arranged in the first groove body (12) through a second rolling bearing (8), and the axis of the second rolling bearing (8) is perpendicular to the axis of the connecting screw (1).
7. Rotary plunger pump set according to any one of claims 4 to 6, characterized in that the sleeve (5) is stepped shaft-like, one end of the sleeve (5) for connecting with the connecting screw (1) is embedded in the through hole, and the turning seat (4) is clamped between the shaft shoulder on the sleeve (5) and the end of the thrust bearing (2).
8. The rotary plunger pump set according to any one of claims 4 to 6, wherein,
The bottom side of pump seat is provided with elasticity and bends (19), angle adjusting component (18) set up in the top side of pump seat, first plate body (9) and second plate body (11) are through all connecting elasticity bending (19) on each form rotatable relation of connection.
9. The rotary plunger pump set of claim 1, further comprising a sensor for monitoring the rotational state of the drive gear.
10. A method of proportional delivery of fluids based on rotary plunger pump sets according to any one of claims 1 to 9, wherein the drive gears on the drive mechanism are rotated in synchronism and each pump head assembly (15) is operated by the drive gear associated therewith;
Wherein, the pump head assembly (15) with the pump head angle being independently adjustable pumps a fluid different from the fluid pumped by any other pump head assembly (15);
When the fluid delivery ratio is required to be adjusted, the pump head angle of the pump head assembly (15) with the pump head angle being independently adjustable is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410805952.4A CN118375583B (en) | 2024-06-21 | 2024-06-21 | Pump set of rotary plunger pump and fluid proportion conveying method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410805952.4A CN118375583B (en) | 2024-06-21 | 2024-06-21 | Pump set of rotary plunger pump and fluid proportion conveying method |
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| CN118375583A true CN118375583A (en) | 2024-07-23 |
| CN118375583B CN118375583B (en) | 2024-09-03 |
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| US5020980A (en) * | 1990-01-05 | 1991-06-04 | Dennis Pinkerton | Valveless, positive displacement pump including hinge for angular adjustment |
| US20030138331A1 (en) * | 2002-01-22 | 2003-07-24 | John Fox | Metering pump with proportional output |
| US20050013708A1 (en) * | 2003-05-20 | 2005-01-20 | Peeler Scott C. | Systems and methods for providing a dynamically adjustable reciprocating fluid dispenser |
| JP2007292008A (en) * | 2006-04-27 | 2007-11-08 | Kyoritsu Kiko Kk | Plunger pump with stroke adjuster |
| US20160245275A1 (en) * | 2013-12-13 | 2016-08-25 | Fluid Metering, Inc. | Mechanism for Fine Adjustment of Flows in Fixed Displacement Pump |
| CN208734499U (en) * | 2018-05-17 | 2019-04-12 | 广州雪霸专用设备有限公司 | A kind of valveless ceramic plunger pump |
| CN110701016A (en) * | 2019-11-14 | 2020-01-17 | 天津鸿河科技有限公司 | High-precision micro-control metering pump |
| CN211343247U (en) * | 2019-11-29 | 2020-08-25 | 广州雪霸专用设备有限公司 | Valveless ceramic plunger pump |
| CN214836920U (en) * | 2021-06-22 | 2021-11-23 | 成都事奇科技有限公司 | Flow regulating device for pump and rotary plunger pump |
-
2024
- 2024-06-21 CN CN202410805952.4A patent/CN118375583B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5020980A (en) * | 1990-01-05 | 1991-06-04 | Dennis Pinkerton | Valveless, positive displacement pump including hinge for angular adjustment |
| US20030138331A1 (en) * | 2002-01-22 | 2003-07-24 | John Fox | Metering pump with proportional output |
| US20050013708A1 (en) * | 2003-05-20 | 2005-01-20 | Peeler Scott C. | Systems and methods for providing a dynamically adjustable reciprocating fluid dispenser |
| JP2007292008A (en) * | 2006-04-27 | 2007-11-08 | Kyoritsu Kiko Kk | Plunger pump with stroke adjuster |
| US20160245275A1 (en) * | 2013-12-13 | 2016-08-25 | Fluid Metering, Inc. | Mechanism for Fine Adjustment of Flows in Fixed Displacement Pump |
| CN208734499U (en) * | 2018-05-17 | 2019-04-12 | 广州雪霸专用设备有限公司 | A kind of valveless ceramic plunger pump |
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| CN211343247U (en) * | 2019-11-29 | 2020-08-25 | 广州雪霸专用设备有限公司 | Valveless ceramic plunger pump |
| CN214836920U (en) * | 2021-06-22 | 2021-11-23 | 成都事奇科技有限公司 | Flow regulating device for pump and rotary plunger pump |
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| Publication number | Publication date |
|---|---|
| CN118375583B (en) | 2024-09-03 |
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