CN219911132U - Single screw pump with sealing device - Google Patents
Single screw pump with sealing device Download PDFInfo
- Publication number
- CN219911132U CN219911132U CN202321022513.3U CN202321022513U CN219911132U CN 219911132 U CN219911132 U CN 219911132U CN 202321022513 U CN202321022513 U CN 202321022513U CN 219911132 U CN219911132 U CN 219911132U
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- China
- Prior art keywords
- cover plate
- screw pump
- sealing
- clamping
- fixed
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- 238000007789 sealing Methods 0.000 title claims abstract description 58
- 238000003780 insertion Methods 0.000 abstract description 4
- 230000037431 insertion Effects 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000012535 impurity Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a single-screw pump with a sealing device, which belongs to the technical field of single-screw pumps, and comprises a power part and a driving part which form the single-screw pump, wherein a sleeve body is sleeved on the power part, a sealing part which is in fit and sleeved on the driving part is fixedly arranged on the sleeve body, and a positioning part is fixedly arranged on the outer wall of the sleeve body, wherein a sealing cover plate is detachably sleeved on the sleeve body, one end of the sealing cover plate is fixedly clamped with the driving part, the other end of the sealing cover plate is in threaded insertion connection with an adjusting ring which is in rotary connection with the power part, and two ends of a spring are respectively abutted with the adjusting ring and the positioning part.
Description
Technical Field
The utility model belongs to the technical field of single-screw pumps, and particularly relates to a single-screw pump with a sealing device.
Background
In the prior art, screw pumps are widely used as feeding devices in industries such as industry, construction, agriculture, pasture, medicine, etc. The single screw pump is a positive displacement pump with relatively simple structure and wide application, has the advantages of stable flow, small pressure pulsation, low noise, high efficiency, long service life, reliable operation and the like, does not stir the conveyed medium when conveying the medium, is insensitive to the viscosity of the medium, and is particularly suitable for conveying high-viscosity medium.
In the existing single-screw pump structure, a shaft seal is needed between a transmission shaft and a suction chamber, and a shaft seal type commonly adopted in the single-screw pump is provided with a packing seal and a mechanical seal. Compared with the defects of low reliability, high maintenance cost and the like of a packing seal, the mechanical seal is easy to overhaul and maintain, has wider application, has different sealing structures adopted by different manufacturers, but generally has the problem of more structural parts, is simultaneously limited by the structural characteristics of a single screw pump, and can cause particle impurities to infiltrate into part gaps when entering a shaft seal area due to higher conveying pressure during mixture conveying, so that parts in the mechanical seal are possibly worn and broken, thereby leading to pump shaft seal failure, medium leakage and incapability of normal operation of the pump.
Disclosure of Invention
(1) Technical problem to be solved
In view of the shortcomings of the prior art, the utility model aims to provide a single-screw pump with a sealing device, which aims to solve the problems that in the prior art, high conveying pressure can cause particle impurities to permeate into gaps of parts when entering a shaft seal area, and abrasion and breakage of the parts in a mechanical seal are likely to occur, so that a pump shaft seal is invalid, medium leaks, and the pump cannot normally operate.
(2) Technical proposal
In order to solve the technical problems, the utility model provides the single-screw pump with the sealing device, which comprises a power part and a driving part, wherein the power part is sleeved with a sleeve body, the upper part of the sleeve body is fixedly provided with a sealing part which is anastomosed and sleeved on the driving part, the outer wall of the sleeve body is fixedly provided with a positioning part, the sleeve body is detachably sleeved with a sealing cover plate, one end of the sealing cover plate is fixedly clamped with the driving part, the other end of the sealing cover plate is in threaded insertion connection with an adjusting ring which is rotationally connected with the power part, the middle of the sealing cover plate is internally provided with a spring, and two ends of the spring are respectively abutted with the adjusting ring and the positioning part.
When the single-screw pump is used, the sleeve body for sealing is sleeved between the power part and the driving part, when the single-screw pump bears higher conveying pressure, the adjusting ring rotates on the power part and slides in the closed cover plate in the rotating process, and the spring is pushed to press the protruding part on the sleeve body in the sliding process, so that the extrusion force between the sealing part and the driving part is increased, the connection between the sleeve body and the driving part is more compact, the tightness of the single-screw pump is improved, meanwhile, when the single-screw pump bears smaller conveying pressure, the extrusion force between the sealing part and the driving part is reduced through the adjusting ring and the spring, the service life of the sealing sleeve is prolonged, the sealing extrusion force of the sealing sleeve and the single-screw pump is convenient to adjust, and the possibility that particle impurities infiltrate into a part gap in a shaft seal area is greatly reduced; through the cover be equipped with by the closure apron that first apron and second apron constitute on the sleeve pipe body, drive two toper joint portions through the bellying and shrink to the elastic groove in to make two toper joint portions shrink to the draw-in groove in, and slidingly shift out from the draw-in groove, thereby dismantle closure apron, and then change the sleeve pipe body, be convenient for install and dismantle the sleeve pipe body that is used for sealedly on the single screw pump, promoted the convenience that the sleeve pipe body was changed.
Preferably, the bearing is sleeved on the driving part, and a groove clamped with the closed cover plate is formed in the side wall of the driving part.
Further, the closed cover plate is composed of a first cover plate and a second cover plate which are symmetrically arranged, and connecting parts which are mutually fixed are fixed at two ends of the closed cover plate.
Furthermore, the connecting parts at two ends of the first cover plate are symmetrically provided with clamping grooves, and the connecting parts at two ends of the second cover plate are symmetrically provided with screw holes.
Furthermore, a clamping rod is inserted into the screw hole in a threaded manner, and the top end of the clamping rod is inserted into the clamping groove in an anastomotic manner.
Furthermore, a conical clamping part is fixed at the top end of the clamping rod, and the bottom end of the conical clamping part is abutted with the connecting part of the side wall of the first cover plate.
Furthermore, an elastic groove extending into the clamping rod is formed in the center of the top end face of the conical clamping portion, and protruding portions are fixedly connected to two sides of the top end face of the conical clamping portion.
(3) Advantageous effects
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the sleeve body for sealing is sleeved between the power part and the driving part, when the single-screw pump bears higher conveying pressure, the adjusting ring is enabled to rotate on the power part and slide in the sealing cover plate in the rotating process, and the spring is pushed to press the protruding part on the sleeve body in the sliding process, so that the extrusion force between the sealing part and the driving part is increased, the connection between the sleeve body and the driving part is tighter, the tightness of the single-screw pump is improved, meanwhile, when the single-screw pump bears smaller conveying pressure, the extrusion force between the sealing part and the driving part is reduced through the adjusting ring and the spring, so that the service life of the sealing sleeve is prolonged, the sealing extrusion force of the sealing sleeve and the single-screw pump is convenient to adjust, and the possibility that particle impurities infiltrate into a part gap in a shaft seal area is greatly reduced.
2. Through the cover be equipped with by the closure apron that first apron and second apron constitute on the sleeve pipe body, drive two toper joint portions through the bellying and shrink to the elastic groove in to make two toper joint portions shrink to the draw-in groove in, and slidingly shift out from the draw-in groove, thereby dismantle closure apron, and then change the sleeve pipe body, be convenient for install and dismantle the sleeve pipe body that is used for sealedly on the single screw pump, promoted the convenience that the sleeve pipe body was changed.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of a sleeve body structure according to the present utility model;
FIG. 3 is a schematic view of a closure deck structure according to the present utility model;
fig. 4 is a schematic view of a connecting portion structure of the present utility model.
The marks in the drawings are: 1. a power section; 2. an adjusting ring; 3. a spring; 4. a sleeve body; 5. a driving section; 6. a bearing; 7. closing the cover plate; 8. a sealing part; 9. a positioning part; 10. a connection part; 11. a first cover plate; 12. a second cover plate; 13. a tapered clamping part; 14. a boss; 15. a clamping groove; 16. a clamping rod; 17. a screw hole; 18. an elastic groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The structure of the single-screw pump with the sealing device is shown in fig. 1, the single-screw pump comprises a power part 1 and a driving part 5 which form the single-screw pump, a sleeve body 4 is sleeved on the power part 1, a sealing part 8 which is in fit connection with the driving part 5 is fixedly arranged on the sleeve body 4, a positioning part 9 is fixedly arranged on the outer wall of the sleeve body 4, a sealing cover plate 7 is detachably sleeved on the sleeve body 4, one end of the sealing cover plate 7 is fixedly clamped with the driving part 5, an adjusting ring 2 which is in rotary connection with the power part 1 is inserted at the other end of the sealing cover plate 7, a spring 3 is embedded in the sealing cover plate 7, two ends of the spring 3 are respectively abutted with the adjusting ring 2 and the positioning part 9, when the single-screw pump bears higher conveying pressure, the adjusting ring 2 rotates on the power part 1, slides in the sealing cover plate 7 in the rotating process, and pushes the spring 3 to press the positioning part 9 on the sleeve body 4 in the sliding process, so that the sealing part 8 and the driving part 5 are tightly connected with the single-screw pump, and the sealing part 4 is tightly sealed.
Wherein, the bearing 6 is installed to the cover on the drive portion 5, and the recess with the joint of closure apron 7 is seted up to the lateral wall of drive portion 5, and the lateral wall of closure apron 7 coincide and pegs graft in drive portion 5 to keep transversely fixed with drive portion 5 between, closure apron 7 comprises first apron 11 and the second apron 12 that the symmetry set up, and the both ends of closure apron 7 all are fixed with connecting portion 10 of mutual fixing, and first apron 11 and second apron 12 are fixed each other through connecting portion 10.
In addition, the connecting portions 10 at two ends of the first cover plate 11 are symmetrically provided with clamping grooves 15, the connecting portions 10 at two ends of the second cover plate 12 are symmetrically provided with screw holes 17, clamping rods 16 are inserted into the screw holes 17 in a threaded manner, the top ends of the clamping rods 16 are in anastomosis insertion connection with the clamping grooves 15, the top ends of the clamping rods 16 are fixedly provided with conical clamping portions 13, the bottom ends of the conical clamping portions 13 are abutted to the connecting portions 10 on the side walls of the first cover plate 11, the central position of the top end face of the conical clamping portions 13 is provided with elastic grooves 18 extending into the clamping rods 16, two sides of the top end face of the conical clamping portions 13 are fixedly connected with protruding portions 14, and the conical clamping portions 13 and the clamping rods 16 are inserted into the clamping grooves 15 in an insertion manner, and meanwhile the conical clamping portions 13 penetrate through the clamping grooves 15 to be tightly connected with the upper surfaces of the connecting portions 10.
The structure of the sleeve body 4 of the single screw pump is shown in fig. 2, the structure of the closed cover plate 7 is shown in fig. 3, and the structure of the connecting part 10 is shown in fig. 4.
Working principle: when the single-screw pump bears higher conveying pressure, the adjusting ring 2 is made to rotate on the power part 1 and slide in the sealing cover plate 7 in the rotating process, the spring 3 is pushed to extrude the positioning part 9 on the sleeve body 4 in the sliding process, so that extrusion force between the sealing part 8 and the driving part 5 is increased, connection between the sleeve body 4 and the driving part 5 is made to be tighter, sealing performance of the single-screw pump is improved, extrusion force between the sealing part 8 and the driving part 5 is reduced through the adjusting ring 2 and the spring 3 when bearing smaller conveying pressure, service life of the sealing sleeve is prolonged, sealing extrusion force of the sealing sleeve and the single-screw pump is convenient to adjust, possibility that particle impurities penetrate into gaps of parts in a shaft seal area is greatly reduced, when the sealing cover plate 7 is dismounted, the extrusion protruding part 14 drives the two conical clamping parts 13 to shrink into the elastic grooves 18, the two conical clamping parts 13 shrink into the clamping grooves 15 and slide out of the clamping grooves 15, and accordingly the sealing cover plate 7 is dismounted, and the sealing cover plate 4 is convenient to mount and dismount the single-screw pump 4.
All technical features in the embodiment can be freely combined according to actual needs.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (7)
1. The utility model provides a single screw pump with sealing device, this single screw pump is including power portion (1) and drive portion (5) that constitute single screw pump, a serial communication port, the cover is equipped with sleeve pipe body (4) on power portion (1), be fixed with on sleeve pipe body (4) coincide and cup joint sealing portion (8) on drive portion (5), and the outer wall of sleeve pipe body (4) is fixed with location portion (9), wherein detachable cover is established on sleeve pipe body (4) and is fixed with closure apron (7), the one end and the drive portion (5) joint of closure apron (7) are fixed, and the other end screw thread grafting of closure apron (7) has adjusting ring (2) with power portion (1) rotation connection, wherein the well of closure apron (7) is embedded to be provided with spring (3), the both ends of spring (3) respectively with adjusting ring (2) and location portion (9) butt.
2. The single-screw pump with the sealing device according to claim 1, characterized in that the bearing (6) is sleeved on the driving part (5), and a groove clamped with the sealing cover plate (7) is formed in the side wall of the driving part (5).
3. A single screw pump with sealing means according to claim 2, characterized in that the closing cover plate (7) consists of a first cover plate (11) and a second cover plate (12) arranged symmetrically, and that the two ends of the closing cover plate (7) are fixed with connecting parts (10) fixed to each other.
4. A single screw pump with sealing device according to claim 3, characterized in that the connecting parts (10) at two ends of the first cover plate (11) are symmetrically provided with clamping grooves (15), and the connecting parts (10) at two ends of the second cover plate (12) are symmetrically provided with screw holes (17).
5. A single screw pump with sealing means according to claim 4, characterized in that a clamping rod (16) is inserted in the screw hole (17) in a threaded manner, and the top end of the clamping rod (16) is inserted in the clamping groove (15) in an anastomotic manner.
6. The single-screw pump with the sealing device according to claim 5, wherein a conical clamping part (13) is fixed at the top end of the clamping rod (16), and the bottom end of the conical clamping part (13) is abutted with the connecting part (10) of the side wall of the first cover plate (11).
7. The single-screw pump with the sealing device according to claim 6, wherein an elastic groove (18) extending into the clamping rod (16) is formed in the center of the top end surface of the conical clamping portion (13), and protruding portions (14) are fixedly connected to two sides of the top end surface of the conical clamping portion (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321022513.3U CN219911132U (en) | 2023-05-04 | 2023-05-04 | Single screw pump with sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321022513.3U CN219911132U (en) | 2023-05-04 | 2023-05-04 | Single screw pump with sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219911132U true CN219911132U (en) | 2023-10-27 |
Family
ID=88439426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321022513.3U Active CN219911132U (en) | 2023-05-04 | 2023-05-04 | Single screw pump with sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219911132U (en) |
-
2023
- 2023-05-04 CN CN202321022513.3U patent/CN219911132U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |