CN204553178U - A kind of displacement pump device - Google Patents
A kind of displacement pump device Download PDFInfo
- Publication number
- CN204553178U CN204553178U CN201520088651.0U CN201520088651U CN204553178U CN 204553178 U CN204553178 U CN 204553178U CN 201520088651 U CN201520088651 U CN 201520088651U CN 204553178 U CN204553178 U CN 204553178U
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- Prior art keywords
- cylinder body
- retractable sack
- displacement pump
- pump device
- sack
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Abstract
The utility model discloses a kind of displacement pump device, this device comprises cylinder body, is arranged at the retractable sack in cylinder body, and the driving mechanism for driving retractable sack flexible.Wherein, define the first area for carrying destination media between the outer surface and the internal surface of cylinder body of retractable sack, the part be communicated with driving mechanism at the internal surface of retractable sack defines the second area for periodic duty medium.The utility model application retractable sack structure realizes Long travel and the low jig frequency of displacement pump device, thus makes retractable sack work more steady, improves the pumping efficiency of displacement pump.
Description
Technical field
The utility model relates to field of electromechanical equipment, particularly a kind of displacement pump device.
Background technique
At present in field of electromechanical equipment, diaphragm pump is one of widely used displacement pump device.Existing diaphragm pump is primarily of cylinder body, barrier film and driving mechanism composition, and wherein, working medium and destination media can effectively be isolated by barrier film.The working principle of diaphragm pump mainly drives the to-and-fro motion of barrier film in cylinder body by driving mechanism, to change the fluid flow of the destination media of exterior, thus completes the pumping to destination media.
But the membrane shape of prior art septation pump is sheet substantially, and its stroke is little, and jig frequency is high.It is steady not that this structure of barrier film can cause barrier film to run when pumping destination media on the one hand; On the other hand, in prior art, during working medium closed cycle, the Pressure testing to working medium and compensation mechanism must be set, otherwise barrier film very easily damages, thus add probability of failure and the manufacture cost of diaphragm pump; Meanwhile, the high jig frequency of existing diaphragm pump easily causes into, valve and changement premature deterioration, reduces the working life of diaphragm pump.
For above-mentioned technology Problems existing, wish in the art to seek a kind of novel displacement pump device with Long travel, low jig frequency, displacement pump is run and reduces production and administration cost more stably simultaneously.
Model utility content
The utility model provides a kind of displacement pump device, comprises cylinder body, the retractable sack be arranged in cylinder body, and the driving mechanism for driving retractable sack flexible.Wherein, form the first area for carrying destination media between the outer surface of retractable sack and the internal surface of cylinder body, the internal surface of retractable sack is communicated with the second area being formed and be used for periodic duty medium with driving mechanism.
According to the utility model, retractable sack can by working medium and destination media completely isolated, and by driving mechanism Direct driver working medium, the flexible of retractable sack be used for retractable sack, thus made the volume of retractable sack outside change pumping procedure.Wherein, the circulation driving retractable sack of working medium stretches and the volume of second area is changed, the destination media of extension contraposition in the first area of its outside of simultaneous retractable capsule acts on, and the volume of first area is changed, thus completes the pumping to destination media.Retractable sack is employed but not barrier film of the prior art in the utility model.According to the utility model, by designing applicable retractable sack structure to reach the larger stroke of retractable sack and lower jig frequency, retractable sack work can be made so more steady, improve the pumping efficiency of displacement pump.In addition; displacement pump device of the present utility model only needs to arrange the object that driving mechanism can reach pumping destination media; without the need to setting up extra monitoring, pressure compensation and protective gear on retractable sack, making this volume pump structure more simple, thus reducing production and administration cost.
In some embodiments, the number of cylinder body is at least two, and arranges corresponding retractable sack respectively in cylinder body.The setting of multiple cylinder body and corresponding retractable sack can improve the pumping efficiency of displacement pump.
In some embodiments, driving mechanism comprises recycle pump assembly, and recycle pump assembly is connected with retractable sack.This recycle pump drives the working medium in second area for circulating, the circulation of working medium can be realized by the loop direction changing recycle pump assembly, thus drive second area volume to change, and then first area volume is changed to the pumping of destination media.
In some embodiments, recycle pump assembly comprises selector valve and oil hydraulic pump, and selector valve is connected with retractable sack, and oil hydraulic pump is connected with selector valve.When displacement pump arranges multiple cylinder body and corresponding retractable sack, by arranging selector valve to realize the change of multiple retractable sack volume, realize the multicylinder pumping to destination media.
In some embodiments, driving mechanism also comprises the storage case for holding working medium, and storage case one end is connected with oil hydraulic pump, and one end is connected with selector valve.This storage case is on the one hand for storing working medium, and for displacement pump provides hydraulic power, on the other hand, when displacement pump quits work, working medium can be back in storage case, avoids working medium to be deposited in retractable sack, affects the working life of retractable sack.
In some embodiments, the ratio of A and B is more than or equal to 0.5 and is less than or equal to 300.Wherein, A is the flexible maximum variable quantity of volume of retractable sack, and B is the product of the length of 2 lines of lie farthest away on the area of maximum cross section on retractable sack and maximum cross section.Retractable sack can be made outwards to advance reposefully by this ratio of this set to act on working medium, to realize Long travel, low jig frequency pumping destination media.
In some embodiments, retractable sack is tubular body, and on the extreme length of tubular body telescopic variation and the cross section of tubular body, the ratio of the length of 2 lines of lie farthest away is more than or equal to 0.5 and is less than or equal to 300.Retractable sack due to tubulose is easy to manufacture, and its geometrical shape is easy to the object reaching better pumping destination media, therefore selects the retractable sack of tubulose to reduce the jig frequency of retractable sack and to improve its stroke.
In some embodiments, cylinder body comprises cylinder body suction port and cylinder body exhaust port, and cylinder body suction port and cylinder body exhaust port place are respectively arranged with cylinder body suction valve and cylinder body expulsion valve.When the volume in retractable sack reduces, suction valve is opened, expulsion valve cuts out, and completes the suction to destination media; When the volume in retractable sack increases, suction valve closure, expulsion valve are opened, and complete the discharge to destination media.
The displacement pump device that the utility model provides has the following advantages relative to displacement pump device of the prior art:
1) in displacement pump device of the present utility model the setting of retractable sack compared to barrier film of the prior art, there is Long travel, the feature of low jig frequency, thus make the operation of retractable sack more steady, greatly reduce the emptying phenomenon of displacement pump, improve the working efficiency of displacement pump simultaneously.
2) in displacement pump device of the present utility model, retractable sack is little compared to the barrier film STRESS VARIATION of prior art, long service life.
3) displacement pump device of the present utility model drives the volume of working medium equal with the volume of the destination media of discharging that stretched by retractable sack in same time, has higher pumping efficiency.
4) displacement pump device of the present utility model is without the need to the additional monitoring to working medium, pressure compensation or protection mechanism, only needs to arrange corresponding driving mechanism and can complete pump function.Thus, its structure is simple, reduces manufacture cost.
Accompanying drawing explanation
Also will be described in more detail the utility model with reference to accompanying drawing based on embodiment hereinafter.Wherein:
Fig. 1 is the structural representation of the displacement pump device according to the first embodiment of the present utility model;
Fig. 2 is the structural representation of the displacement pump device according to the second embodiment of the present utility model.
In the accompanying drawings, identical parts use identical reference character.Accompanying drawing is not according to the scale of reality.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Details described here is exemplary, and is only used for carrying out illustrative discussion to embodiment of the present utility model, and their existence is to provide the most useful and the most intelligible description be considered to principle of the present utility model and concept aspect.About this point, here do not attempt introduction CONSTRUCTED SPECIFICATION of the present utility model being exceeded to the degree needed for basic comprehension the utility model, those skilled in the art can be expressly understood by specification and accompanying drawing thereof and implement several form of the present utility model how in practice.
Fig. 1 shows the structural representation of the displacement pump device 100 according to the first embodiment of the present utility model.This embodiment is described for the displacement pump 100 of twin-tub effect.As shown in the figure, displacement pump 100 comprising cylinder body 30 and 50, being arranged at retractable sack 40 and 60 in cylinder body 30 and 50 and the driving mechanism 70 for driving retractable sack 40 and 60 to carry out fore and aft motion respectively.Wherein, the outer surface of retractable sack 40 and 60 respectively and the first area C be formed between cylinder body 30 and the internal surface of 50 for carrying destination media, and retractable sack 40 with 60 the part be communicated with driving mechanism 70 define second area D for periodic duty medium.Be appreciated that displacement pump device of the present utility model is not limited thereto double-cylinder structure.Single cylinder or multi-cylinder structure also belong in scope of the present utility model.In addition, the number of the retractable sack in each cylinder body also can be chosen one or more according to concrete Environmental Conditions.
In this embodiment, retractable sack 40 and 60 can by working medium and destination media completely isolated, and by driving mechanism 70 Direct driver working medium retractable sack 40 and 60 has been used for it stretches, thus the volume of retractable sack 40 and 60 outside is made to have changed pumping procedure.Wherein, the circulation of working medium drives retractable sack to stretch, thus the volume of second area D is changed.Meanwhile, the destination media of extension contraposition in the first area C of its outside of retractable sack 40 and 60 acts on, and the volume of first area C is changed, thus completes the pumping to destination media.
According to this embodiment of the present utility model, driving mechanism 70 comprises recycle pump assembly 71 and the storage case 72 for holding working medium.Recycle pump assembly 71 is all connected with 60 with retractable sack 40, drives the working medium in second area D for circulating.By changing the loop direction of recycle pump assembly 71, the circulation of working medium can be realized, thus the volume in second area D is changed, and then the pumping making the volume of first area C change destination media.
Preferably, recycle pump assembly 71 comprises selector valve 711 and oil hydraulic pump 712, and wherein selector valve 711 is connected with 60 with retractable sack 40, and oil hydraulic pump 712 is connected with selector valve 711.When displacement pump device 100 is provided with multiple cylinder body and corresponding retractable sack, by arranging selector valve 711 to realize the Volume Changes of multiple retractable sack, thus realize the multicylinder pumping to destination media.Here, selector valve can be such as mechanical commutation valve, solenoid directional control valve or electro-hydraulic reversing valve.
In addition, as shown in Figure 1, one end of storage case 72 is connected with oil hydraulic pump 712 by pipeline, and the other end is connected with selector valve 711 by pipeline.This storage case 72 1 aspect is for storing working medium, for displacement pump device 100 provides hydraulic power, on the other hand, when displacement pump device 100 quits work, working medium can be back in storage case 72, thus avoids working medium and be deposited in the working life affecting retractable sack 40 and 60 in retractable sack 40 and 60.
According to the retractable sack 40 and 60 that the utility model provides, it can have any shape.In the retractable sack of this arbitrary shape, the ratio of A and B is more than or equal to 0.5 and is less than or equal to 300, wherein, A is the flexible maximum variable quantity of volume of retractable sack, and B is the product of the length of 2 lines of lie farthest away on the area of maximum cross section on retractable sack and maximum cross section.Be understandable that, when retractable sack its volume under not flexible state is V1, when retractable sack stretches that its volume is V2 under the state of maximum volume, the difference of V2 and V1 is A.Retractable sack 40 and 60 can be made outwards to advance reposefully act on working medium, to realize Long travel, low jig frequency pumping destination media by arranging this ratio.
In the embodiment shown in fig. 1, retractable sack 40 and 60 is tubular body.Particularly, on the extreme length of this tubular body telescopic variation and the cross section of tubular body, the ratio of the length of 2 lines of lie farthest away is more than or equal to 0.5 and is less than or equal to 300.Retractable sack 40 and 60 due to tubulose is easy to manufacture, and its geometrical shape is easy to the object reaching better pumping destination media, therefore selects the retractable sack 40 and 60 of tubulose to reduce the jig frequency of retractable sack and to improve its stroke.Preferably, the cross section of tubular body can be circle or rectangle.When the cross section of tubular body is circular, the extreme length of tubular body telescopic variation and the ratio of its diameter are preferably greater than or equal to 0.5 and are less than or equal to 300.When the cross section of tubular body is rectangle, the ratio of the extreme length length cornerwise with it of tubular body telescopic variation is preferably greater than or equal to 0.5 and is less than or equal to 300.
In addition, retractable sack 40 and 60 all can be made up of corrosion resistant material.Like this, when displacement pump device 100 has corrosive destination media for pumping, retractable sack 40 and 60 can not be corroded, and thus ensure that the safe pumping of displacement pump device 100.The material of the retractable sack 40 and 60 be applicable to can select viton, etc.
Preferably, Sealing is provided with in the joint of retractable sack 40 and 60 and driving mechanism 70.The seal is not shown in the drawings, and its sealing means can be chosen according to concrete behaviour in service.The seal further ensures retractable sack 40 and 60 sealings be communicated with driving mechanism 70, and destination media and working medium are isolated completely effectively.
In the embodiment shown in fig. 1, cylinder body 30 comprises cylinder body suction port 32 and cylinder body exhaust port 31.Cylinder body suction valve 34 and cylinder body expulsion valve 33 is respectively arranged with at cylinder body suction port 32 and cylinder body exhaust port 31 place.Cylinder body 50 comprises cylinder body suction port 52 and cylinder body exhaust port 51.Cylinder body suction valve 54 and cylinder body expulsion valve 53 is respectively arranged with at cylinder body suction port 52 and cylinder body exhaust port 51 place.For cylinder body 30, when the volume in retractable sack 40 reduces, cylinder body suction valve 34 is opened and cylinder body expulsion valve 33 cuts out, and completes the suction to destination media.When the volume in retractable sack 30 increases, cylinder body suction valve 34 cuts out and cylinder body expulsion valve 33 is opened, and completes the discharge to destination media.Cylinder body 50 and corresponding retractable sack 60 have the working principle identical with corresponding retractable sack 40 with above-mentioned cylinder body 30, repeat no more here.
Fig. 2 is the structural representation of the displacement pump device 100 ' according to the second embodiment of the present utility model.The displacement pump device 100 ' of this embodiment is particularly useful for the vertical operation of deep-well, and its basic functional principle is identical with the working principle of the displacement pump device 100 in the first embodiment.In displacement pump device 100 ', motor 90 ' drives oil hydraulic pump 712 ', oil hydraulic pump 712 ' drives the working medium being positioned at storage case 72 ' by selector valve 711 ', and drive the retractable sack 40 ' and 60 ' being positioned at cylinder body 30 ', cylinder body 50 ' respectively, retractable sack 40 ' and 60 ' is moved back and forth, thus cylinder body 30 ' and 50 ' internal volume change, simultaneously the suction valve of corresponding cylinder body, expulsion valve complete the suction process to destination media.
Retractable sack is employed but not barrier film of the prior art in the utility model.According to the utility model, by designing applicable retractable sack structure to reach Long travel and the low jig frequency of retractable sack, retractable sack work can be made so more steady, improve the pumping efficiency of displacement pump.In addition, displacement pump device of the present utility model only needs to arrange the object that driving mechanism can reach pumping destination media, without the need to setting up extra monitoring, pressure compensation and protection mechanism to working medium, makes this volume pump structure simpler.Meanwhile, the low jig frequency of displacement pump device of the present utility model not easily causes the premature deterioration into, valve and changement, improves the working life of displacement pump device, thus reduces production and administration cost.
It should be noted, foregoing example only to be interpreted as object, and can not be thought to limit the utility model.Although be described the utility model according to exemplary embodiment, but should be appreciated that used herein is descriptive and illustrative language, instead of restrictive language.Current described with in the scope of the claims of amendment, in the scope not departing from scope and spirit of the present utility model, can change the utility model.Although be described the utility model according to specific mode, material and embodiment here, the utility model is not limited in details disclosed herein; On the contrary, the utility model extends to structure, the methods and applications of such as all identical functions within the scope of the appended claims.
Claims (9)
1. a displacement pump device, is characterized in that, comprising:
Cylinder body,
Be arranged at the retractable sack in described cylinder body, and
For the driving mechanism driving described retractable sack flexible,
Wherein, define the first area for carrying destination media between the outer surface and the internal surface of described cylinder body of described retractable sack, the part be communicated with described driving mechanism at the internal surface of described retractable sack defines the second area for periodic duty medium.
2. displacement pump device according to claim 1, is characterized in that, the number of described cylinder body is at least two, and is equipped with described retractable sack in cylinder body described in each.
3. displacement pump device according to claim 1 and 2, is characterized in that, described driving mechanism comprises recycle pump assembly, and described recycle pump assembly is connected with described retractable sack.
4. displacement pump device according to claim 3, is characterized in that, described recycle pump assembly comprises selector valve and oil hydraulic pump, and wherein said selector valve is connected with described retractable sack, and described oil hydraulic pump is connected with described selector valve.
5. displacement pump device according to claim 4, is characterized in that, described driving mechanism also comprises the storage case for holding described working medium, and one end of described storage case is connected with described oil hydraulic pump, and the other end is connected with described selector valve.
6. displacement pump device according to claim 1 and 2, it is characterized in that, the ratio of A and B is more than or equal to 0.5 and is less than or equal to 300, wherein, A is the flexible maximum variable quantity of volume of described retractable sack, and B is the product of the length of 2 lines of lie farthest away on the area of maximum cross section on described retractable sack and maximum cross section.
7. displacement pump device according to claim 1 and 2, is characterized in that, described retractable sack is tubular body.
8. displacement pump device according to claim 7, is characterized in that, on the extreme length of described tubular body telescopic variation and the cross section of tubular body, the ratio of the length of 2 lines of lie farthest away is more than or equal to 0.5 and is less than or equal to 300.
9. displacement pump device according to claim 1 and 2, is characterized in that, described cylinder body comprises cylinder body suction port and cylinder body exhaust port, is respectively arranged with cylinder body suction valve and cylinder body expulsion valve at described cylinder body suction port and cylinder body exhaust port place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088651.0U CN204553178U (en) | 2015-02-06 | 2015-02-06 | A kind of displacement pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088651.0U CN204553178U (en) | 2015-02-06 | 2015-02-06 | A kind of displacement pump device |
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| Publication Number | Publication Date |
|---|---|
| CN204553178U true CN204553178U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520088651.0U Withdrawn - After Issue CN204553178U (en) | 2015-02-06 | 2015-02-06 | A kind of displacement pump device |
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| Country | Link |
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| CN (1) | CN204553178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675682A (en) * | 2015-02-06 | 2015-06-03 | 江苏耐尔冶电集团有限公司 | Volumetric pump device |
-
2015
- 2015-02-06 CN CN201520088651.0U patent/CN204553178U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675682A (en) * | 2015-02-06 | 2015-06-03 | 江苏耐尔冶电集团有限公司 | Volumetric pump device |
| CN104675682B (en) * | 2015-02-06 | 2017-03-15 | 张瑞 | A kind of volume pump installation |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150812 Effective date of abandoning: 20171114 |
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| AV01 | Patent right actively abandoned |