CN205714745U - A kind of displacement pump of eccentric wheel structure - Google Patents
A kind of displacement pump of eccentric wheel structure Download PDFInfo
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- CN205714745U CN205714745U CN201620279919.3U CN201620279919U CN205714745U CN 205714745 U CN205714745 U CN 205714745U CN 201620279919 U CN201620279919 U CN 201620279919U CN 205714745 U CN205714745 U CN 205714745U
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- eccentric
- displacement pump
- drive shaft
- cutting plate
- wheel structure
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Abstract
This utility model discloses the displacement pump of a kind of eccentric wheel structure, including: the pump housing, being provided with power end component and fluid end assembly in the described pump housing, described power end component includes: the drive shaft that can rotate under external actuating unit effect, described drive shaft runs through the described pump housing；Described fluid end assembly includes: eccentric, fluid cylinder and multiple cutting plate, described eccentric and cutting plate are placed in described fluid cylinder, described fluid cylinder, drive shaft and eccentric connect the cavity volume that space is described displacement pump surrounded, described cutting plate one end is connected with described fluid cylinder, the other end of described cutting plate is close to described eccentric, and cavity volume is divided into multiple autonomous closure space by the plurality of cutting plate.This utility model rotation rotarily driving eccentric by drive shaft, eccentric is when rotating, the directly volume size in each autonomous closure space in change cavity volume, without being further added by the dynamic movement Curve transform device of tradition displacement pump such as reciprocating pump, there is the feature of simple in construction, low cost of manufacture.
Description
Technical field
This utility model relates to pump field, particularly relates to the displacement pump of a kind of eccentric wheel structure.
Background technology
Traditional displacement pump such as reciprocating pump, is changed fluid cylinder volume size by plunger or piston by moving back and forth, and coordinates liquid feed valve and tapping valve to realize pumping liquid.Owing to power source moving curve is become linear motion from circular motion, the power end conversion that Structure of need is complicated, typically use bent axle, crosshead and intermediate bar to connect fluid end in power end part and make plunger reciprocating.Owing to these mechanical mechanism moving components of needs are more, it is the most all face contact and sliding friction, causes running speed many to limit, produce substantial amounts of heat at work, therefore there is the shortcomings such as the life-span is short, and efficiency is low, bulky.In order to ensure power end normal operation, it is necessary to use substantial amounts of oil lubrication and cool down each face transmission width, these lubricating oil are to need regular replacing and interpolation, thus also result in running and cause the problems such as environmental pollution with maintenance cost and power oil seepage.
Utility model content
This utility model is mainly solving the technical problems that provide the displacement pump of a kind of eccentric wheel structure, by the rotation rotarily driving eccentric of drive shaft, eccentric is when rotating, the volume size in each autonomous closure space in directly changing cavity volume, it is not necessary to be further added by the dynamic movement Curve transform device of tradition displacement pump such as reciprocating pump.Owing to eccentric is arranged in cylinder, directly contact with the liquid in fluid cylinder during eccentric work, it is not necessary to lubrication and cooling system.
For solving above-mentioned technical problem, the technical scheme that this utility model uses is: provide the displacement pump of a kind of eccentric wheel structure, including: the pump housing, power end component and fluid end assembly it is provided with in the described pump housing, described power end component includes: the drive shaft that can rotate under external actuating unit effect, described drive shaft runs through the described pump housing；Described fluid end assembly includes: eccentric, fluid cylinder and multiple cutting plate, described eccentric and cutting plate are placed in described fluid cylinder, described fluid cylinder, drive shaft and eccentric connect the cavity volume that space is described displacement pump surrounded, described cutting plate one end is connected with described fluid cylinder, the other end of described cutting plate is close to described eccentric, the plurality of cutting plate can along its length on move reciprocatingly, described cavity volume is divided into multiple autonomous closure space by the plurality of cutting plate, by the rotation rotarily driving described eccentric of described drive shaft, thus change the volume size in described closing space.
Preferably, described fluid end assembly also includes pressure mechanism, and described pressure mechanism connects described cutting plate and described fluid cylinder, when eccentric rotates, compresses cutting plate by pressure mechanism, and cutting plate is close to eccentric, it is ensured that described closing space sealing is good.
Preferably, described fluid end assembly also includes that liquid feed valve and tapping valve, described liquid feed valve and tapping valve are arranged in described closing space.
Preferably, described fluid end assembly also includes that feed tube and discharging tube, described feed tube are connected with described liquid feed valve, and described discharging tube is connected with described tapping valve.
Preferably, described fluid end assembly is provided with multiple, and described fluid end components distribution is on the circumference with described drive shaft as the center of circle.
Preferably, the described pump housing also includes that inlet and leakage fluid dram, described inlet are connected with described feed tube, and described leakage fluid dram is connected with described discharging tube.
Preferably, the described pump housing also includes diverter, intercommunication between described diverter, feed tube and liquid feed valve, and described diverter is installed in described drive shaft.
Preferably, the described pump housing also includes the first sealing ring, the second sealing ring and the 3rd sealing ring, and the junction of described eccentric and fluid cylinder is located at by described first sealing ring；Described second sealing ring is located at described pump housing inwall and the junction of drive shaft；The junction of described fluid cylinder and the pump housing is located at by described 3rd sealing ring.
Preferably, the described pump housing also includes that bearing, described bearing are located at described pump housing outer wall and described drive shaft junction.
Preferably, there is dynamic balancing between the plurality of eccentric.
In technical solutions of the utility model, by the rotation rotarily driving eccentric of drive shaft, eccentric rotate time, the volume size in each autonomous closure space in directly changing cavity volume, it is not necessary to be further added by tradition displacement pump such as reciprocating pump dynamic movement Curve transform device；Owing to eccentric is arranged and in fluid cylinder, directly contact with the liquid in fluid cylinder during eccentric work, without lubrication and cooling system, make the simple in construction of displacement pump, low cost of manufacture, floor space is little, drastically reduce the area because conventional motion curve is in the produced energy loss of conversion, further reduce the working strength of drive shaft, improve the service life of drive shaft.By arranging multiple fluid end assembly, increase discharge capacity, there is dynamic balancing between also making eccentric adjacent simultaneously, balanced the eccentric force of extra eccentric so that displacement pump runs more stable；Fluid end components distribution, on the circumference with drive shaft as the center of circle, when displacement pump right angle setting uses, is greatly saved the floor space of displacement pump；First sealing ring, the second sealing ring and the 3rd sealing ring are set, the junction of fluid end, the pump housing and drive shaft are sealed so that liquid will not seepage outside the pump housing, also ensure that sealing effectiveness.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to the structure shown in these accompanying drawings.
Fig. 1 is the displacement pump plan structure schematic diagram of a kind of eccentric wheel structure of this utility model；
Fig. 2 is the sectional structure schematic diagram of transversely centrage in Fig. 1.
Drawing reference numeral illustrates: 10, the pump housing；11, power end component；111, drive shaft；12, fluid end assembly；121, eccentric；122, cutting plate；123, fluid cylinder；124, pressure mechanism；125, liquid feed valve；126, tapping valve；127, feed tube；128, discharging tube；13, inlet；14, leakage fluid dram；15, diverter；16, the first sealing ring；17, the second sealing ring；18, the 3rd sealing ring；19, bearing.
The realization of this utility model purpose, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Need explanation, in this utility model embodiment, directional instruction (such as up, down, left, right, before and after ...) is only used for explanation relative position relation under a certain particular pose (as shown in drawings) between each parts, motion conditions etc., if this particular pose changes, then directionality instruction changes the most therewith.
It addition, such as relating to the description of " first ", " second " etc. is only used for describing purpose in this utility model, and it is not intended that indicate or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In this utility model, unless otherwise clearly defined and limited, term " connects ", " fixing " etc. should be interpreted broadly, and such as, " fixing " can be fixing connection, it is also possible to is to removably connect, or integral；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in this utility model can be understood as the case may be.
Additionally; technical scheme between each embodiment of this utility model can be combined with each other; but must be based on those of ordinary skill in the art are capable of; when technical scheme combination occur conflicting maybe cannot realize time will be understood that the combination of this technical scheme does not exists, the most not this utility model require protection domain within.
The utility model proposes the displacement pump of a kind of eccentric wheel structure.In this utility model embodiment, as a example by fluid end assembly is provided with two.
Refer to Fig. 1 to Fig. 2, in this utility model embodiment, a kind of displacement pump of eccentric wheel structure, including: the pump housing 10, power end component 11 and fluid end assembly 12 it is provided with in the pump housing 10, power end component 11 includes: the drive shaft 111 that can rotate under external actuating unit effect, drive shaft 111 runs through the pump housing 10；Fluid end assembly 12 includes: eccentric 121, fluid cylinder 123 and multiple cutting plate 122, eccentric 121 and cutting plate 122 are placed in fluid cylinder 123, fluid cylinder 123, drive shaft 111 and eccentric 121 connect the cavity volume that space is displacement pump (sign) surrounded, cutting plate 122 one end is connected with fluid cylinder 123, the other end of cutting plate 122 is close to eccentric 121, cutting plate 122 can along its length on move reciprocatingly, cavity volume is divided into multiple autonomous closure space (sign) by multiple cutting plates 122, by the rotation rotarily driving eccentric 121 of drive shaft 111, thus change the volume size closing space.nullUtilize cutting plate 122 that the cavity volume containing eccentric 121 is divided into two closed space，The reciprocating action of similar fluid cylinder plunger is produced when eccentric 121 rotates，The space of closing making segmentation produces the change on volume，Relatively conventional reciprocating pump，Eliminate dynamic movement Curve transform device，The conversion equipment of linear motion will be converted into by circular motion，Owing to the mechanism kinematic parts of dynamic movement Curve transform device are more，It is the most all face contact and sliding friction，Running speed many is caused to limit，Produce substantial amounts of heat at work，Therefore there is the life-span short，Efficiency is low，The shortcoming such as bulky，In this utility model，The center of eccentric 121 relative drive shaft 111 offsets，Cavity volume is divided into again two to close space by cutting plate 122，When drive shaft 111 rotates，Cutting plate 122 does not changes with the relative position of eccentric 121，Rotation along with eccentric 121，Divided two volumes closing space change，Greatly simplify volume pump structure，Save manufacturing cost；Furthermore, eccentric 121 is placed in fluid cylinder 123, when eccentric 121 is in running, eccentric 121 is cooled down and lubricates by the liquid in fluid cylinder 123, it is not necessary to lubrication and chiller, and then simplifies volume pump structure, without using lubricating oil and cooling liquid, save the energy and cost.External connection power mechanism is (not including) diesel engine and motor.
Refering to Fig. 2, fluid end assembly 12 also includes that pressure mechanism 124, pressure mechanism 124 connect cutting plate 122 and fluid cylinder 123, when eccentric 121 rotates, compressing cutting plate 122 by pressure mechanism 124, cutting plate 122 is close to eccentric 121, it is ensured that close space sealing good.Pressure mechanism 124 is (being not limited to) spring, cylinder, and pressure mechanism 124 also can replace with other aerodynamic force or hydraulic power mechanism.In the present embodiment, as a example by spring, eccentric 121 is along with drive shaft 111 high speed rotating, the spring being connected with eccentric 121 be squeezed one point to eccentric thrust, spring is forced to promote shim to be close to eccentric, ensure that and close the sealing that space is good, the rotation of eccentric could change the volume size of closed interval.
It addition, fluid end assembly 12 also includes liquid feed valve 125 and tapping valve 126, close space and be provided with liquid feed valve 125 and tapping valve 126.Each closing space individually connects liquid feed valve 125 and tapping valve 126, under the cooperation of liquid feed valve 125 and tapping valve 126, completes imbibition and draining function, thus realizes pumping liquid.
Further, fluid end assembly 12 also includes feed tube 127 and discharging tube 128, and feed tube 127 is connected with liquid feed valve 125, and discharging tube 128 is connected with tapping valve 126.In this utility model embodiment, the imbibition work process of displacement pump is: when eccentric 121 rotates clockwise, in Fig. 1, the closed interval volume in left side can change from small to big, liquid is sucked by inlet, liquid feed valve 125 is opened under suction, liquid enters fluid cylinder 123, the discharge opeing work process of displacement pump is: eccentric 121 continues to rotate, in Fig. 1, the closed interval volume in left side can be diminished by maximum, now liquid feed valve 125 is stressed closedown, tapping valve 126 is opened, and is discharged by the liquid in fluid cylinder 123；Meanwhile, in Fig. 1, the closed interval volume on right side is then diminished by maximum space, the same principle, and owing to the fluid pressure of closed interval, right side rises, liquid feed valve 125 can be first shut off, and tapping valve 126 is opened, and liquid is discharged from leakage fluid dram 14.So repetitive cycling, two closed intervals will alternate liquid sucking-discharging process under the effect of eccentric 121.
In this utility model embodiment, fluid end assembly 12 is set to two, and fluid end assembly 12 is distributed on the circumference with drive shaft 111 as the center of circle.Fluid end assembly 12 is set to two, making defeated lifting rate is a twice during fluid end assembly 12, and fluid end assembly 12 may be installed on the circumference with drive shaft 111 as the center of circle, in the case of increasing the defeated lifting rate of displacement pump, without increasing the horizontal floor space of displacement pump, very useful.
Further referring to Fig. 1, the pump housing also includes inlet 13 and leakage fluid dram 14, and inlet 13 is connected with feed tube 127, and leakage fluid dram 14 is connected with discharging tube 128.
Further, the pump housing 10 also includes diverter 15, intercommunication between diverter 15, feed tube 127 and liquid feed valve 125, and diverter 15 is installed in drive shaft 111.
Referring to Fig. 2, the pump housing 10 also includes the first sealing ring the 16, second sealing ring 17 and the 3rd sealing ring 18, first sealing ring 16 is located at eccentric 121 and the junction of fluid cylinder 123, second sealing ring 17 is located at the pump housing 10 inwall and the junction of drive shaft 111, and the 3rd sealing ring 18 is located at fluid cylinder 123 and the junction of the pump housing 10.First sealing ring 16 is for seal eccentric wheel 121 and the junction of fluid cylinder 123, second sealing ring 17 is for sealing the pump housing 10 and the junction of drive shaft 111,3rd sealing ring 18 is for sealing fluid cylinder 123 and the junction of the pump housing 10, each sealing ring is installed on each crucial connecting portion of displacement pump, prevent interior seepage and outward leakage, it is ensured that the air-tightness of two confined spaces of divided 122 segmentation.
It addition, in this utility model embodiment, displacement pump also includes bearing 19, the junction of the pump housing 10 outer wall and drive shaft 111 is located at by bearing 19, bearing 19 is used for supporting drive shaft 111, reduces the coefficient of friction in drive shaft 111 motor process, and ensures the rotating accuracy of drive shaft 111.
In this utility model embodiment, between two eccentrics 121, there is dynamic balancing.Refering to Fig. 2, the eccentric 121 on displacement pump top is to the left, and the eccentric 121 of displacement pump bottom is to the right, make eccentric 121 during along with drive shaft 111 high speed rotating, the eccentric force that the eccentric 121 that can cancel each other produces, displacement pump is during running, the most stable.
In this utility model embodiment, by the rotation rotarily driving eccentric 121 of drive shaft 111, eccentric 121 rotate time, the volume size in each autonomous closure space in directly changing cavity volume, it is not necessary to be further added by tradition displacement pump such as reciprocating pump dynamic movement Curve transform device；Owing to eccentric 121 is arranged and in fluid cylinder 123, directly contact with the liquid in fluid cylinder 123 when eccentric 121 works, without lubrication and cooling system, make the simple in construction of displacement pump, low cost of manufacture, floor space is little, drastically reduce the area because conventional motion curve is in the produced energy loss of conversion, further reduce the working strength of drive shaft 111, improve the service life of drive shaft 111.By arranging multiple fluid end assembly 12, increase discharge capacity, there is dynamic balancing between also making eccentric 121 adjacent simultaneously, balanced the eccentric force that eccentric 121 high speed rotating produces so that displacement pump runs more stable；Fluid end assembly 12 is distributed on the circumference with drive shaft as the center of circle, when displacement pump right angle setting uses, is greatly saved the floor space of displacement pump；Arranging the first sealing ring the 16, second sealing ring 17 and the 3rd sealing ring 18, each sealing ring is installed on each crucial connecting portion of displacement pump, it is therefore prevented that interior seepage and outward leakage, it is ensured that the air-tightness of two confined spaces of divided 122 segmentation.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; it is every under utility model of the present utility model is conceived; utilize the equivalent structure transformation that this utility model description and accompanying drawing content are made, or directly/be indirectly used in other relevant technical fields and be included in scope of patent protection of the present utility model.
Claims (10)
1. a displacement pump for eccentric wheel structure, including the pump housing, is provided with power end component and fluid end assembly in the described pump housing, it is characterised in that:
Described power end component includes: the drive shaft that can rotate under external actuating unit effect, described drive shaft runs through the described pump housing；
Described fluid end assembly includes: eccentric, fluid cylinder and multiple cutting plate, described eccentric and cutting plate are placed in described fluid cylinder, described fluid cylinder, drive shaft and eccentric connect the cavity volume that space is described displacement pump surrounded, described cutting plate one end is connected with fluid cylinder, the other end of described cutting plate is close to described eccentric, described cutting plate can along its length on move reciprocatingly, described cavity volume is divided into multiple autonomous closure space by the plurality of cutting plate, by the rotation rotarily driving described eccentric of described drive shaft, thus change the volume size in described closing space.
The displacement pump of eccentric wheel structure the most according to claim 1, it is characterized in that, described fluid end assembly also includes pressure mechanism, described pressure mechanism connects described cutting plate and described fluid cylinder, when eccentric rotates, compressing cutting plate by pressure mechanism, cutting plate is close to eccentric, it is ensured that described closing space sealing is good.
The displacement pump of eccentric wheel structure the most according to claim 2, it is characterised in that described fluid end assembly also includes that liquid feed valve and tapping valve, described liquid feed valve and tapping valve are arranged in described closing space.
The displacement pump of eccentric wheel structure the most according to claim 3, it is characterised in that described fluid end assembly also includes that feed tube and discharging tube, described feed tube are connected with described liquid feed valve, and described discharging tube is connected with described tapping valve.
The displacement pump of eccentric wheel structure the most according to claim 4, it is characterised in that described fluid end assembly is provided with multiple, described fluid end components distribution is on the circumference with described drive shaft as the center of circle.
The displacement pump of eccentric wheel structure the most according to claim 5, it is characterised in that the described pump housing also includes that inlet and leakage fluid dram, described inlet are connected with described feed tube, and described leakage fluid dram is connected with described discharging tube.
The displacement pump of eccentric wheel structure the most according to claim 6, it is characterised in that the described pump housing also includes diverter, intercommunication between described diverter, feed tube and liquid feed valve, described diverter is installed in described drive shaft.
The displacement pump of eccentric wheel structure the most according to claim 7, it is characterised in that described displacement pump also includes the first sealing ring, the second sealing ring and the 3rd sealing ring, the junction of described eccentric and fluid cylinder is located at by described first sealing ring；Described second sealing ring is located at described pump housing inwall and the junction of drive shaft；The junction of described fluid cylinder and the pump housing is located at by described 3rd sealing ring.
The displacement pump of eccentric wheel structure the most according to claim 8, it is characterised in that described displacement pump also includes that bearing, described bearing are located at described pump housing outer wall and described drive shaft junction.
10. according to the displacement pump of the eccentric wheel structure according to any one of claim 5-9, it is characterised in that there is dynamic balancing between the plurality of eccentric.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620279919.3U CN205714745U (en) | 2016-04-06 | 2016-04-06 | A kind of displacement pump of eccentric wheel structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620279919.3U CN205714745U (en) | 2016-04-06 | 2016-04-06 | A kind of displacement pump of eccentric wheel structure |
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| CN205714745U true CN205714745U (en) | 2016-11-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736363A (en) * | 2016-04-06 | 2016-07-06 | 禾通科技公司 | Positive displacement pump of eccentric wheel structure |
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- 2016-04-06 CN CN201620279919.3U patent/CN205714745U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736363A (en) * | 2016-04-06 | 2016-07-06 | 禾通科技公司 | Positive displacement pump of eccentric wheel structure |
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