CN212360171U - Stable multi-body double-crank displacement pump - Google Patents
Stable multi-body double-crank displacement pump Download PDFInfo
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- CN212360171U CN212360171U CN202021039827.0U CN202021039827U CN212360171U CN 212360171 U CN212360171 U CN 212360171U CN 202021039827 U CN202021039827 U CN 202021039827U CN 212360171 U CN212360171 U CN 212360171U
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Abstract
The utility model discloses a stable multi-body double-crank displacement pump, which relates to the technical field of pump fluid machinery and comprises a pump shell and a pump shell upper end cover, wherein one side of the pump shell upper end cover is connected with a driving crank revolution shaft, and the tail end of the driving crank revolution shaft is eccentrically provided with a driven crank common-rail revolution shaft; a driven part is sleeved on the driven crank common rail revolution shaft, one side of the driven part is connected with a connecting rod blade, the outer side of the connecting rod blade is connected with a driving rotor, one end of the driving rotor is connected with a pump shaft, the other end of the driving rotor is provided with a rotor end cover sleeved on the driving crank revolution shaft, and a plurality of rotor blocking walls are uniformly distributed between the rotor end cover and the driving rotor; bearing holes are formed in two ends of the pump shell, one end of the pump shell is fixedly connected with the upper end cover of the pump shell, the other end of the pump shell is connected with the pump shaft through a bearing, and the bearing holes in the connecting end of the pump shell and the upper end cover of the pump shell are connected with the rotor end cover through the bearing. The utility model discloses reduced the runout and the axial float of rotor, improved positive displacement pump stability.
Description
Technical Field
The utility model relates to a pump class fluid machinery technical field especially relates to a stable many solid double crank displacement pump.
Background
The pump fluid machinery is a general machinery which converts mechanical energy into kinetic energy of working medium liquid. The well-established fluid mechanical structure technologies include crank-connecting rod piston pumps, eccentric runner plunger pumps, eccentric rotor pumps, centrifugal impeller pumps, and the like. Compared with a centrifugal impeller pump, the displacement pump has the obvious characteristic of high volumetric efficiency, and simultaneously has the defect of high processing and manufacturing cost, and the flow benefit of the displacement pump is less than one tenth of that of the centrifugal pump under the same volume. The reason for the high cost of the displacement pump mainly has two aspects, on one hand, the number of the assembling structures of the rotor of the displacement pump is large, the relation is complex, the requirement on the machining precision is high, and meanwhile, the control difficulty of machining and assembling can be greatly increased due to the fact that the assembling relation is complex and the accumulative action difference is caused. In addition, the displacement pump has an eccentric structure, so that the radial runout and the axial runout of a rotor commonly exist, and the pump is easy to block in the working process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a stable many bodies double crank displacement pump to solve the problem that above-mentioned prior art exists, reduce the runout and the axial float of rotor, improve displacement pump stability.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a stable multi-body double-crank displacement pump, which comprises a pump shell and a pump shell upper end cover, wherein one side of the pump shell upper end cover is fixedly connected with a driving crank revolution shaft, and a driven crank common-rail revolution shaft is eccentrically arranged on the end surface of the tail end of the driving crank revolution shaft; the diameter of the driven crank common rail revolution shaft is smaller than that of the driving crank revolution shaft; a plurality of driven parts are sleeved on the driven crank common rail revolution shaft, one side of each driven part is connected with a connecting rod blade through a pin shaft, the outer side of each connecting rod blade is movably connected with a driving rotor, one end of each driving rotor is connected with a pump shaft, the pump shaft is used for being connected with a motor, the other end of each driving rotor is provided with a rotor end cover sleeved on the driving crank revolution shaft, a plurality of rotor blocking walls are uniformly distributed between the rotor end covers and the driving rotors, and one side of each rotor blocking wall is in contact with the outer side of the corresponding connecting rod blade; bearing holes are formed in two ends of the pump shell, one end of the pump shell is fixedly connected with the upper end cover of the pump shell, the other end of the pump shell is connected with the pump shaft through a bearing, and the bearing holes in the connecting end of the pump shell and the upper end cover of the pump shell are connected with the rotor end cover through the bearing.
Optionally, the driven part is located including the cover driven crank is common rail revolution epaxial hollow cylinder, fixedly connected with hollow shaft on the hollow cylinder lateral wall, the hollow shaft with the inboard swing joint of connecting rod blade.
Optionally, both sides of the connecting rod blade are provided with connecting through holes, and the cross section of the part of the connecting rod blade located between the two connecting through holes is of an arc-shaped plate-shaped structure; and the connecting through hole at the inner side of the connecting rod blade is provided with an inwards concave rectangular groove, the rectangular groove divides the connecting through hole at the inner side of the connecting rod blade into an upper part and a lower part, and the hollow shaft is clamped in the rectangular groove and is connected with the connecting through holes at the upper end and the lower end of the rectangular groove through a pin shaft.
Optionally, the section of the driving rotor is of a circular structure, the center of a circle at one end of the driving rotor is connected with the pump shaft, and the side edge at the other end of the driving rotor is connected with the rotor retaining wall; the outer side of the rotor retaining wall is smoothly connected with the side edge of the driving rotor, and the inner side of the rotor retaining wall is of an arc structure; the width of the cross section of the rotor retaining wall is gradually increased from one end to the other end, and an arc-shaped groove is formed in the end, with the largest width, of the rotor retaining wall; the driving rotor is provided with a connecting hole, a connecting through hole in the outer side of the connecting rod blade is connected with the connecting hole through a pin shaft, and the outer side wall of the connecting rod blade is located in the arc-shaped groove.
The utility model discloses for prior art gain following technological effect:
the utility model limits the connecting rod blade and the driven part to cooperate with the whole frame to the common rail differential motion in the cavity of the driving rotor through the driving rotor; the outer part of the driving rotor is limited to move concentrically in the cavity of the pump shell by the concentric bearings at the upper end and the lower end of the driving rotor and the concentric bearing hole positions arranged at the upper end and the lower end of the pump shell. The problems of radial run-out and axial play commonly existing in the displacement pump are solved through the driving rotor, the rotor assembly structure relation is simplified, the number of parts of the two-body double crank, the three-body double crank and the four-body double crank is respectively 8, 10 and 12, and the processing, assembly and manufacturing cost is greatly reduced.
Under rated volume and frame length condition, the utility model provides a flow and the lift of pump will be changed to the structure, and the accessible changes the rotational speed of motor and realizes that the rotational speed of motor is directly proportional relation with flow and the lift of pump. The utility model can easily realize the high-efficiency volume flow ratio, for example, under the condition of the same volume, the same flow benefit as the centrifugal impeller pump and several times of the lift of the centrifugal impeller pump can be obtained; high-efficiency frequency conversion is easy to realize, for example, when the pump works at different rated rotating speeds, instantaneous flow and working pressure have values corresponding to each other one by one, and no pulsation phenomenon exists; the technology of the utility model is applied to the liquid propeller, which is beneficial to the vector propulsion speed regulation; the utility model discloses the technique is applied to the liquid mixer, is favorable to the vector to mix and joins in marriage liquid.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is an exploded view of the stable multi-body double crank displacement pump of the present invention;
FIG. 2 is a schematic partial cross-sectional view of a stabilized multi-body double crank displacement pump of the present invention;
FIG. 3 is a schematic structural view of the common rail revolution axis of the driving crank and the driven crank of the stabilized multiple double crank displacement pump of the present invention;
wherein, 1 is a pump shell, 2 is an upper end cover of the pump shell, 3 is a driving crank revolution shaft, 4 is a driven crank common rail revolution shaft, 5 is a driven part, 6 is a connecting rod blade, 7 is a driving rotor, 8 is a pump shaft, 9 is a rotor end cover, 10 is a rotor retaining wall, and 11 is a bearing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a stable many bodies double crank displacement pump to solve the problem that above-mentioned prior art exists, reduce the runout and the axial float of rotor, improve displacement pump stability.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The utility model provides a stable many-body double crank displacement pump, as shown in figure 1-figure 3, including pump case 1 and pump case upper end cover 2, pump case upper end cover 2 one side fixedly connected with initiative crank revolution axis 3, the eccentric driven crank common rail revolution axis 4 that is provided with on the terminal surface of initiative crank revolution axis 3 end, the section of driven crank common rail revolution axis 4 is not concentric with the section of initiative crank revolution axis 3, and is contained in the section of initiative crank revolution axis 3; the major diameter specifications of the two materials depend on the material yield strength under the condition of meeting the pressure requirement of the working condition; the diameter of the driven crank common rail revolution shaft 4 is smaller than that of the driving crank revolution shaft 3; a plurality of driven pieces 5 are sleeved on the driven crank common rail revolution shaft 4, and a line segment between two large and small circle centers of each driven piece 5 is a driven crank AB; the driven part 5 is matched with a lantern ring of the common rail revolution shaft 4 of the driven crank and is provided with a plurality of schemes such as a left side, a right side, a middle part and two sides; one side of the driven part 5 is connected with a connecting rod blade 6 through a pin shaft, the outer side of the connecting rod blade 6 is movably connected with a driving rotor 7, one end of the driving rotor 7 is connected with a pump shaft 8, the pump shaft 8 is used for connecting a motor, the other end of the driving rotor 7 is provided with a rotor end cover 9 sleeved on the driving crank rotating shaft 3, a plurality of rotor baffle walls 10 are uniformly distributed between the rotor end cover 9 and the driving rotor 7, and one side of each rotor baffle wall 10 is in contact with the outer side of the connecting rod; bearing holes are formed in two ends of the pump shell 1, one end of the pump shell 1 is fixedly connected with the pump shell upper end cover 2, the other end of the pump shell is connected with the pump shaft 8 through a bearing 11, and the bearing holes in the connecting end of the pump shell 1 and the pump shell upper end cover 2 are connected with the rotor end cover 9 through the bearing 11. Pump cavity retaining walls are correspondingly arranged on two sides inside the pump shell 1, through development and research, the size specification of the pump cavity retaining walls is equal to that of the rotor retaining wall 10, and the accumulated work difference is less than or equal to 0.1 mm.
Further preferably, the driven member 5 comprises a hollow cylinder sleeved on the common rail revolution shaft 4 of the driven crank, a hollow shaft is fixedly connected to the side wall of the hollow cylinder, and the hollow shaft is movably connected with the inner side of the connecting rod blade 6. Connecting through holes are formed in the two sides of each connecting rod blade 6, a line segment between the hole centers of the two connecting through holes of each connecting rod blade 6 is a connecting rod BC, and the section of the part, located between the two connecting through holes, of each connecting rod blade 6 is of an arc-shaped plate structure; and the connecting through hole at the inner side of the connecting rod blade 6 is provided with an inwards concave rectangular groove, the connecting through hole at the inner side of the connecting rod blade 6 is divided into an upper part and a lower part by the rectangular groove, and the hollow shaft is clamped in the rectangular groove and is connected with the connecting through holes at the upper end and the lower end of the rectangular groove through a pin shaft. The line segment between the circle center of the through hole and the circle center of the driving rotor connected with the outer side end of the connecting rod blade 6 is a driving crank CD. The ratio of the length of the crank frame AD to the length of the driving crank is less than 0.2 so as to meet the reasonable proportional relation of the transmission angle and the pressure angle of the double-crank mechanism.
The section of the driving rotor 7 is of a circular structure, the center of a circle at one end of the driving rotor 7 is connected with a pump shaft 8, and the side edge at the other end of the driving rotor 7 is connected with a rotor retaining wall 10; the outer side of the rotor retaining wall 10 is smoothly connected with the side edge of the driving rotor 7, and the inner side is of an arc structure; the width of the section of the rotor retaining wall 10 is gradually increased from one end to the other end, and an arc-shaped groove is formed in the end, with the largest width, of the rotor retaining wall 10; the driving rotor 7 is provided with a connecting hole, the connecting through hole on the outer side of the connecting rod blade 6 is connected with the connecting hole through a pin shaft, and the outer side wall of the connecting rod blade 6 is positioned in the arc-shaped groove.
The utility model discloses the theory of operation does: the driving rotor 7 revolves around the driving crank revolution shaft 3 and pushes each connecting rod blade 6 at the same time, and the connecting rod blades 6 drive each driven member 5 to do common-rail differential cooperative motion around the driven crank common-rail revolution shaft 7; in the movement process, due to the periodic change of the movement position of the connecting rod blade 6, the enclosed volume cavity among the driving rotor 7, the connecting rod blade 6 and the driven part 5 is periodically changed; in the actual movement process, the volume of the volume cavity is the minimum at the moment that the rotor baffle wall 10 is opened and the pump shell baffle wall is closed, and the negative pressure generated by the volume cavity is the maximum at the moment, so that the working medium liquid is rapidly sucked from the water inlet, and meanwhile, the volume of the volume cavity corresponding to the water outlet is the maximum and generates the maximum positive pressure, so that the working medium liquid is rapidly extruded to the water outlet, and the process of sucking and removing the working medium liquid in the pump cavity is realized.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (4)
1. A stable many solid double crank positive displacement pumps which characterized in that: the driving crank common rail revolution shaft is eccentrically arranged on the end face of the tail end of the driving crank revolution shaft; the diameter of the driven crank common rail revolution shaft is smaller than that of the driving crank revolution shaft; a plurality of driven parts are sleeved on the driven crank common rail revolution shaft, one side of each driven part is connected with a connecting rod blade through a pin shaft, the outer side of each connecting rod blade is movably connected with a driving rotor, one end of each driving rotor is connected with a pump shaft, the pump shaft is used for being connected with a motor, the other end of each driving rotor is provided with a rotor end cover sleeved on the driving crank revolution shaft, a plurality of rotor blocking walls are uniformly distributed between the rotor end covers and the driving rotors, and one side of each rotor blocking wall is in contact with the outer side of the corresponding connecting rod blade; bearing holes are formed in two ends of the pump shell, one end of the pump shell is fixedly connected with the upper end cover of the pump shell, the other end of the pump shell is connected with the pump shaft through a bearing, and the bearing holes in the connecting end of the pump shell and the upper end cover of the pump shell are connected with the rotor end cover through the bearing.
2. The stabilized multi-body dual crank volumetric pump of claim 1, wherein: the driven part is located including the cover driven crank common rail revolution epaxial hollow section of thick bamboo, fixedly connected with hollow shaft on the hollow section of thick bamboo lateral wall, the hollow shaft with the inboard swing joint of connecting rod blade.
3. The stabilized multi-body dual crank volumetric pump of claim 2, wherein: connecting through holes are formed in the two sides of each connecting rod blade, and the section of the part, located between the two connecting through holes, of each connecting rod blade is of an arc-shaped plate structure; and the connecting through hole at the inner side of the connecting rod blade is provided with an inwards concave rectangular groove, the rectangular groove divides the connecting through hole at the inner side of the connecting rod blade into an upper part and a lower part, and the hollow shaft is clamped in the rectangular groove and is connected with the connecting through holes at the upper end and the lower end of the rectangular groove through a pin shaft.
4. The stabilized multi-body dual crank volumetric pump of claim 3, wherein: the section of the driving rotor is of a circular structure, the center of a circle at one end of the driving rotor is connected with the pump shaft, and the side edge at the other end of the driving rotor is connected with the rotor retaining wall; the outer side of the rotor retaining wall is smoothly connected with the side edge of the driving rotor, and the inner side of the rotor retaining wall is of an arc structure; the width of the cross section of the rotor retaining wall is gradually increased from one end to the other end, and an arc-shaped groove is formed in the end, with the largest width, of the rotor retaining wall; the driving rotor is provided with a connecting hole, a connecting through hole in the outer side of the connecting rod blade is connected with the connecting hole through a pin shaft, and the outer side wall of the connecting rod blade is located in the arc-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021039827.0U CN212360171U (en) | 2020-06-09 | 2020-06-09 | Stable multi-body double-crank displacement pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021039827.0U CN212360171U (en) | 2020-06-09 | 2020-06-09 | Stable multi-body double-crank displacement pump |
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| Publication Number | Publication Date |
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| CN212360171U true CN212360171U (en) | 2021-01-15 |
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| CN202021039827.0U Active CN212360171U (en) | 2020-06-09 | 2020-06-09 | Stable multi-body double-crank displacement pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577596A (en) * | 2020-06-09 | 2020-08-25 | 山东福为环境科技有限公司 | Stable multi-body double-crank displacement pump |
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- 2020-06-09 CN CN202021039827.0U patent/CN212360171U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577596A (en) * | 2020-06-09 | 2020-08-25 | 山东福为环境科技有限公司 | Stable multi-body double-crank displacement pump |
| CN111577596B (en) * | 2020-06-09 | 2024-07-02 | 山东福为环境科技有限公司 | Stable multi-body double-crank displacement pump |
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