CN211852149U - Double-screw pump - Google Patents
Double-screw pump Download PDFInfo
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- CN211852149U CN211852149U CN202020326794.1U CN202020326794U CN211852149U CN 211852149 U CN211852149 U CN 211852149U CN 202020326794 U CN202020326794 U CN 202020326794U CN 211852149 U CN211852149 U CN 211852149U
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Abstract
The utility model provides a double-screw pump, belonging to the technical field of screw pumps, comprising a pump body and a rotor assembly arranged in the pump body, wherein the pump body comprises a first shell and a second shell, and the first shell is sleeved on the periphery of the rotor assembly; the second shell is sleeved on the periphery of the first shell, and the second shell and the first shell are matched to form a heating cavity and a conveying cavity which are mutually isolated; the conveying cavity is used for conveying a high-temperature medium, the heating cavity is used for circulating a heating medium, and the heating medium is used for heating the pump body. The utility model discloses the twin-screw pump can realize preheating to the pump body through filling into heating medium in to the heating chamber, and at the in-process of pump body work, heating medium can also play heat retaining effect to the pump body in the continuous circulation of heating intracavity, consequently when carrying high temperature medium, can guarantee that the pump body is the same with the temperature of medium, can not change the dielectric property because pump body temperature is less than medium temperature, increases the stability of medium, improves conveying efficiency.
Description
Technical Field
The utility model belongs to the technical field of the screw pump, more specifically say, relate to a two-screw pump.
Background
The double-screw pump can be suitable for cleaning media or granular media, and is widely applied to industries such as petroleum, chemical engineering, metallurgy, steel and the like due to the structural particularity of the double-screw pump.
The twin-screw can involve the transport of high temperature medium when using, and although high temperature medium can carry with the centrifugal pump, when medium viscosity is high or medium viscosity is unstable, it is more convenient to carry through the twin-screw pump, but when current twin-screw pump was to the transport of high temperature medium, because the temperature of the pump body itself is lower, played the cooling effect to high temperature medium easily, leaded to the high temperature medium characteristic to change, can't guarantee the high-efficient transportation to high temperature medium.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a twin-screw pump aims at solving current twin-screw pump transportation high temperature medium and changes the technical problem that medium temperature and conveying efficiency are low easily.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a double-screw pump, includes the pump body and locates rotor assembly in the pump body, the pump body includes:
the first shell is sleeved on the periphery of the rotor assembly; and
the second shell is sleeved on the periphery of the first shell, and the second shell and the first shell are matched to form a heating cavity and a conveying cavity which are mutually isolated;
the conveying cavity is used for conveying a high-temperature medium, the heating cavity is used for circulating a heating medium, and the heating medium is used for heating the pump body.
As another embodiment of the present application, the heating cavity is disposed around an axis of the rotor assembly on a radial surface of the pump body.
As another embodiment of the present application, the heating cavity and the delivery cavity are disposed around the axis of the rotor assembly on a radial surface of the pump body.
As another embodiment of this application, be equipped with first siphunculus and second siphunculus on the pump body, first casing includes:
the inner shell is arranged on the periphery of the rotor assembly; and
and one end of the blocking pipe is connected with the inner shell, one end of the blocking pipe is communicated with the conveying cavity, and the other end of the blocking pipe is communicated with the first through pipe.
The second housing includes:
the outer shell is arranged on the periphery of the inner shell and connected with the other end of the baffle pipe, a first liquid inlet communicated with the heating cavity is formed in the top of the outer shell, and a first liquid outlet communicated with the heating cavity is formed in the bottom of the outer shell;
the first blocking piece is arranged at the upper part in the outer shell and is connected with the upper part of the inner shell; and
the second blocking piece is arranged at the lower part in the outer shell and is connected with the lower part of the inner shell;
the inner shell the fender pipe the shell first separation blade and the second separation blade encloses to close and forms the heating chamber, the shell first separation blade, the second separation blade and the inner shell encloses to close and forms carry the chamber.
As another embodiment of the present application, a valve body is disposed on the first through pipe, a third shell is disposed on the periphery of the valve body, the third shell and the valve body enclose to form a first cavity, the first cavity is used for circulating the heating medium, and the heating medium is used for heating the valve body;
and a second liquid inlet communicated with the first cavity is formed in the top of the third shell, and a second liquid outlet communicated with the first cavity is formed in the bottom of the third shell.
As another embodiment of the present application, the second liquid outlet is communicated with the first liquid inlet.
As another embodiment of the present application, the heating cavity is used for locally heating the pump body.
As another embodiment of this application, the periphery cover of first casing is equipped with the resistance circle, the resistance circle first casing and the second casing encloses to close and forms the heating chamber.
As another embodiment of the present application, the resistance ring is provided in plurality, and the plurality of resistance rings are distributed along the axial direction of the pump body.
As another embodiment of the present application, the rotor assembly includes two main shafts, and the two ends of the main shafts are respectively provided with an elongated section.
The utility model provides a two screw pump's beneficial effect lies in: compared with the prior art, the utility model discloses when the double-screw pump needs the transport medium of higher temperature, need fill heating medium earlier in the heating chamber, wait that heating medium promotes the temperature of the pump body to suitable temperature, and the pump body begins work, and it is internal that conveying medium lets in the pump, under rotor assembly's dynamic action, realizes treating the transport of conveying medium, and at the whole in-process of pump body operation, the heating medium in the heating chamber lasts the circulation, guarantees constant temperature. The utility model discloses the twin-screw pump can realize preheating to the pump body through filling into heating medium in to the heating chamber, and at the in-process of pump body work, heating medium can also play heat retaining effect to the pump body in the continuous circulation of heating intracavity, consequently when carrying high temperature medium, can guarantee that the pump body is the same with the temperature of medium, can not change the dielectric property because pump body temperature is less than medium temperature, increases the stability of medium, improves conveying efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic top cross-sectional view of a twin-screw pump according to an embodiment of the present invention;
fig. 2 is a schematic front sectional view of a pump body according to an embodiment of the present invention;
fig. 3 is a schematic left-side sectional view of a pump body according to an embodiment of the present invention;
fig. 4 is a schematic top cross-sectional view of a twin-screw pump according to a second embodiment of the present invention;
fig. 5 is a schematic front sectional view of a pump body according to a second embodiment of the present invention;
fig. 6 is a schematic left-side sectional view of a pump body according to an embodiment of the present invention.
In the figure: 1. a pump body; 101. a first housing; 111. an inner shell; 112. blocking the pipe; 102. a second housing; 121. a housing; 122. a first baffle plate; 123. a second baffle plate; 2. a first through pipe; 3. a second pipe; 4. a rotor assembly; 5. a heating cavity; 6. a first cavity; 7. blocking a ring; 8. a first liquid inlet; 9. a first liquid outlet; 10. a second liquid inlet; 11. a second liquid outlet; 12. a valve body; 13. a third housing; 14. a delivery lumen; 15. a lengthening section; 16. a bearing seat; 17. a main shaft.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 6 together, the twin-screw pump of the present invention will now be described. The double-screw pump comprises a pump body 1 and a rotor assembly 4 arranged in the pump body 1, wherein the pump body 1 comprises a first shell 101 and a second shell 102, and the first shell 101 is sleeved on the periphery of the rotor assembly 4; the second shell 102 is sleeved on the periphery of the first shell 101, and the second shell 102 and the first shell 101 are matched to form a heating cavity 5 and a conveying cavity 14 which are mutually isolated; the delivery chamber 14 is used for delivering a high-temperature medium, the heating chamber 5 is used for circulating a heating medium, and the heating medium is used for heating the pump body 1.
The utility model provides a double-screw pump, compared with the prior art, the utility model discloses when the double-screw pump needs the transport medium of higher temperature, need fill into heating medium in the heating chamber 5 earlier, treat that heating medium promotes the temperature of the pump body 1 to suitable temperature, pump body 1 begins to work, and in the transport medium lets in the pump body 1, under rotor assembly 4's dynamic effect, the realization is treated the transport of transport medium, at the whole in-process of the operation of the pump body 1, the heating medium in the heating chamber 5 lasts the circulation, guarantees constant temperature. The utility model discloses the twin-screw pump can realize preheating to the pump body 1 through filling into heating medium in heating chamber 5, and at the in-process of the work of the pump body 1, heating medium can also play heat retaining effect to the pump body 1 in heating chamber 5 continuous circulation, consequently when carrying high temperature medium, can guarantee that the temperature of the pump body 1 and medium is the same, can not be less than medium temperature because the pump body 1 temperature changes the medium characteristic, increases the stability of medium, improves conveying efficiency.
As a specific embodiment of the twin-screw pump provided by the present invention, please refer to fig. 3 and 6, on the radial surface of the pump body 1, the heating cavity 5 is disposed around the axis of the rotor assembly 4. The heating cavity 5 is arranged in a surrounding manner, so that uniform heating on each position on the radial surface of the pump body 1 can be realized.
In this embodiment, the heating cavity 5 may be coiled around the outer circumference of the rotor assembly 4 in a spring shape; or the whole cavity is in a ring shape and is wrapped on the periphery of the pump body 1; the heating medium can be hot oil, hot water or hot steam, and the like, so that the cost is low, and meanwhile, the rapid heat transfer can be realized.
As a specific embodiment of the twin-screw pump provided by the present invention, please refer to fig. 3 and 6, on the radial surface of the pump body 1, the heating cavity 5 and the conveying cavity 14 are disposed around the axis of the rotor assembly 4. Carry chamber 14 and heating chamber 5 interval setting, wherein carry the medium from carrying chamber 14 process and with the inside intercommunication of the pump body 1, carry the medium and carry through the inside chamber 14 that carries of the pump body 1, heating chamber 5 heats the pump body 1 in the periphery, the temperature of the pump body 1 is with similar for preferring with carrying the medium, can guarantee to carry the temperature constancy of medium, prevents that temperature variation from resulting in carrying the medium and rotten.
As a specific embodiment of the twin-screw pump provided by the present invention, please refer to fig. 2 to 3 and fig. 5 to 6, a first through pipe 2 and a second through pipe 3 are arranged on a pump body 1, a first casing 101 includes an inner casing 111 and a baffle pipe 112, the inner casing 111 is arranged at the periphery of a rotor assembly 4; one end of the baffle pipe 112 is connected with the inner shell 111, one end of the baffle pipe 112 is communicated with the conveying cavity 14, and the other end is communicated with the first through pipe 2. The second shell 102 comprises an outer shell 121, a first blocking piece 122 and a second blocking piece 123, the outer shell 121 is arranged on the periphery of the inner shell 111 and is connected with the other end of the blocking pipe 112, a first liquid inlet 8 communicated with the heating cavity 5 is arranged at the top of the outer shell 121, and a first liquid outlet 9 communicated with the heating cavity 5 is arranged at the bottom of the outer shell 121; the first blocking piece 122 is arranged at the upper part in the outer shell 121 and is connected with the upper part of the inner shell 111; the second baffle 123 is arranged at the lower part in the outer shell 121 and is connected with the lower part of the inner shell 111; the inner shell 111, the blocking pipe 112, the outer shell 121, the first blocking piece 122 and the second blocking piece 123 enclose to form the heating cavity 5; the outer casing 121, the first blocking piece 122, the second blocking piece 123 and the inner casing 111 enclose to form the conveying cavity 14.
The first blocking piece 122 and the second blocking piece 123 isolate the heating chamber 5 from the conveying chamber 14, ensure the normal operation of the first through pipe 2, before the pump body 1 is operated, a heating medium is injected into the heating cavity 5 through the first liquid inlet 8, at the moment, the first liquid outlet 9 is closed, the heating medium flows from the top to the bottom of the heating cavity 5 and is injected into the heating cavity 5, after the heating cavity 5 is filled with the heating medium, the first liquid outlet 9 is opened, the liquid inlet rate of the first liquid inlet 8 is the same as the liquid outlet rate of the first liquid outlet 9, liquid inlet and liquid outlet are carried out simultaneously, the circulating flow of the heating medium in the heating cavity 5 is realized, the temperature of the inner shell 111 is gradually increased, after the temperature of the pump body 1 is detected to be proper, the pump body 1 starts to work, and at the moment, the heating medium always keeps circulating flow in the heating cavity 5, the temperature in the heating cavity 5 is kept constant, the temperature of the conveyed medium is kept constant, and the conveying efficiency is improved.
As a specific embodiment of the twin-screw pump provided by the present invention, please refer to fig. 2 to 3, a valve body 12 is disposed on the first through pipe 2, a third casing 13 is disposed on the periphery of the valve body 12, the third casing 13 and the valve body 12 enclose to form a first cavity 6, the first cavity 6 is used for circulating a heating medium, and the heating medium is used for heating the valve body 12; the top of the third shell 13 is provided with a second liquid inlet 10 communicated with the first cavity 6, and the bottom is provided with a second liquid outlet 11 communicated with the first cavity 6. When needing to preheat, pour into heating medium into in to first cavity 6 through second inlet 10, second liquid outlet 11 closes this moment, after waiting to be filled with heating medium in the first cavity 6, open second liquid outlet 11, the inlet fluid rate of second inlet 10 is the same with the play liquid rate of second liquid outlet 11 this moment, the inlet fluid goes on with going out liquid simultaneously, realize the circulation flow of heating medium in first cavity 6, in pump body 1 during operation, can also play heat retaining effect to valve body 12 in, this condition is applicable to the medium of carrying the higher temperature, because the temperature of medium is higher, under the unheated state of device, the difference in temperature with every part of device is all great, consequently, need increase valve body 12 heating, make each part of device heat abundant, reduce the influence to the temperature of high temperature medium itself.
In this embodiment, the first cavity 6 is distributed along the axial direction of the valve body 12 and uniformly wraps the periphery of the valve body 12, so as to uniformly heat the valve body 12.
As a specific embodiment of the twin-screw pump provided by the present invention, please refer to fig. 2 to 3, wherein the second liquid outlet 11 is communicated with the first liquid inlet 8. At the moment, the first cavity 6 is communicated with the heating cavity 5, the first cavity 6 and the heating cavity 5 can share one heating medium source, before preheating, the second liquid inlet 10, the second liquid outlet 11 and the first liquid inlet 8 are opened, the first liquid outlet 9 is closed, a heating medium is filled into the first cavity 6 through the second liquid inlet 10, flows out of the second liquid outlet 10 through the first cavity 6 and enters the heating cavity 5 from the first liquid inlet 8, after the heating cavity 5 and the first cavity 6 are filled with the heating medium, the first liquid outlet 9 is opened, the liquid inlet rate of the second liquid inlet 10 is the same as the liquid outlet rate of the first liquid outlet 9, the circulating flow of the heating medium in the first cavity 6 and the heating cavity 5 is realized, and the heat preservation effect can be achieved when the pump body 1 works; when the structure works, because the first cavity 6 and the heating medium in the heating cavity 5 are communicated with each other, the temperature consistency of the valve body 12 and the pump body 1 can be ensured, and the temperature change of the high-temperature medium in the conveying process is stabilized; the valve body 12 and the pump body 1 share one heat source, so that the use of the heat source is reduced, and the cost consumption in the production process is reduced.
As a specific embodiment of the twin-screw pump of the present invention, please refer to fig. 4 to 6, the heating chamber 5 is used for locally heating the pump body 1. Preferably, the heating cavity 5 is located in the middle of the pump body 1 in the axial direction of the pump body 1, the length of the heating cavity is half of that of the pump body 1, after the heating medium is injected into the heating cavity 5, the temperature of the middle section of the pump body 1 is firstly raised and then gradually diffused towards the two ends, the pump body 1 can reach a not-too-high temperature in a short time, the condition is suitable for the condition that the temperature or the viscosity of the medium to be conveyed is not too high, the temperature difference between the temperature of the conveyed medium and the pump body 1 is not too large at the moment, and the whole pump body 1 does not need to.
As a specific embodiment of the twin-screw pump provided in the present invention, please refer to fig. 4 to 6, the outer circumference cover of the first casing 101 is provided with the resistance ring 7, and the resistance ring 7, the first casing 101 and the second casing 102 enclose and form the heating cavity 5. When only one stop ring 7 is arranged, the stop ring 7 is sleeved on the periphery of the first shell 101, the distance between the stop ring 7 and the outer wall of the end part of the pump body 1 is the length of the heating cavity 5, the heating cavity 5 is located at the end part of the pump body 1, the length of the heating cavity 5 in the axial direction of the pump body 1 can be adjusted by adjusting the position of the stop ring 7, and the installation is convenient.
As a specific embodiment of the twin-screw pump provided by the present invention, please refer to fig. 4 to 6, the plurality of check rings 7 are provided, and the plurality of check rings 7 are distributed along the axial direction of the pump body 1. Preferably, the resistance ring 7 is equipped with two, and the distance between two resistance rings 7 heats chamber 5 promptly along the axial length of the pump body 1, can adjust the position of heating chamber 5 this moment through adjusting two resistance ring 7's position, sets up heating chamber 5 in the middle section of the pump body 1, does benefit to 1 middle section of the pump body and evenly dispels the heat to both sides, realizes the even heating of the pump body 1, and this structure is applicable to and heats the part of the pump body 1.
As a specific embodiment of the twin-screw pump provided in the present invention, please refer to fig. 1 and 4, the rotor assembly 4 includes two main shafts 17, and the two ends of the main shafts 17 are respectively provided with the extension sections 15. The tip cover of main shaft 17 is equipped with gear and bearing, if gear and bearing are too near can lead to the heat transfer of the pump body 1 to gear and bearing apart from the pump body 1, and then lead to the overheated damage of gear and bearing, can prolong the radiating distance of the pump body 1 to both ends through the tip increase extension section 15 at main shaft 17, the pump body 1 is in the radiating in-process to both ends, along with the increase temperature decline of distance, extension section 15 can effectively prevent the position of temperature transfer to bearing and gear on the pump body 1, the life of extension bearing and gear.
In this embodiment, preferably, the distance between the two ends of the main shaft 17 is d, and the distance between the two ends of the new main shaft formed by the lengthened section 17 at the two ends is 1.2 d.
As a specific embodiment of the twin-screw pump provided in the present invention, please refer to fig. 1 and 4, the two ends of the pump body 1 are provided with bearing seats 16, and the bearing seats 16 are provided with mechanical seal flushing devices. Mechanical seal washing unit can be for two terminal surfaces or bi-polar face collection dress formula, play sealed effect to pump body 1 inside through mechanical seal, the effect of washing is for reaching refrigerated effect to gear and bearing, because be equipped with extension section 15 on the main shaft 17, make mechanical seal washing unit have more axial installation distance, there is the mechanical seal washing unit of the suitable structure of abundant distance installation and specification model on the pump body 1, guarantee that gear and bearing obtain reasonable lubricant cooling, prevent the high temperature overload damage.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The double-screw pump comprises a pump body and a rotor assembly arranged in the pump body, and is characterized in that the pump body comprises:
the first shell is sleeved on the periphery of the rotor assembly; and
the second shell is sleeved on the periphery of the first shell, and the second shell and the first shell are matched to form a heating cavity and a conveying cavity which are mutually isolated;
the conveying cavity is used for conveying a high-temperature medium, the heating cavity is used for circulating a heating medium, and the heating medium is used for heating the pump body.
2. The twin screw pump of claim 1, wherein said heating cavity is disposed about the axis of said rotor assembly on a radial face of said pump body.
3. The twin screw pump of claim 2, wherein said heating cavity and said delivery cavity are disposed about the axis of said rotor assembly on a radial face of said pump body.
4. The twin screw pump of claim 3, wherein said pump body has a first through-tube and a second through-tube, said first housing comprising:
the inner shell is arranged on the periphery of the rotor assembly; and
one end of the blocking pipe is connected with the inner shell, one end of the blocking pipe is communicated with the conveying cavity, and the other end of the blocking pipe is communicated with the first through pipe;
the second housing includes:
the outer shell is arranged on the periphery of the inner shell and connected with the other end of the baffle pipe, a first liquid inlet communicated with the heating cavity is formed in the top of the outer shell, and a first liquid outlet communicated with the heating cavity is formed in the bottom of the outer shell;
the first blocking piece is arranged at the upper part in the outer shell and is connected with the upper part of the inner shell; and
the second blocking piece is arranged at the lower part in the outer shell and is connected with the lower part of the inner shell;
the inner shell the fender pipe the shell first separation blade and the second separation blade encloses to close and forms the heating chamber, the shell first separation blade, the second separation blade and the inner shell encloses to close and forms carry the chamber.
5. The twin-screw pump according to claim 4, wherein a valve body is provided on the first through pipe, a third casing is provided around the valve body, the third casing and the valve body enclose a first cavity, the first cavity is used for circulating the heating medium, and the heating medium is used for heating the valve body;
and a second liquid inlet communicated with the first cavity is formed in the top of the third shell, and a second liquid outlet communicated with the first cavity is formed in the bottom of the third shell.
6. The twin screw pump of claim 5, wherein said second outlet port is in communication with said first inlet port.
7. The twin screw pump of claim 4, wherein said heating cavity is for localized heating of said pump bodies.
8. The twin screw pump of claim 7, wherein said first housing is peripherally sleeved with a resistance ring, said first housing and said second housing enclosing said heating cavity.
9. The twin screw pump of claim 8, wherein said resistance rings are provided in plurality, and a plurality of said resistance rings are distributed along the axial direction of said pump body.
10. The twin screw pump of claim 1, wherein said rotor assembly includes two main shafts, said main shafts having respective elongated sections at each end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020326794.1U CN211852149U (en) | 2020-03-16 | 2020-03-16 | Double-screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020326794.1U CN211852149U (en) | 2020-03-16 | 2020-03-16 | Double-screw pump |
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| Publication Number | Publication Date |
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| CN211852149U true CN211852149U (en) | 2020-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202020326794.1U Active CN211852149U (en) | 2020-03-16 | 2020-03-16 | Double-screw pump |
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| Country | Link |
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| CN (1) | CN211852149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215721A (en) * | 2021-12-22 | 2022-03-22 | Tcl家用电器（合肥）有限公司 | Noise reduction device and refrigerator |
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2020
- 2020-03-16 CN CN202020326794.1U patent/CN211852149U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215721A (en) * | 2021-12-22 | 2022-03-22 | Tcl家用电器（合肥）有限公司 | Noise reduction device and refrigerator |
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