CN113027809B - Mechanical seal structure for chemical pump convenient to change - Google Patents
Mechanical seal structure for chemical pump convenient to change Download PDFInfo
- Publication number
- CN113027809B CN113027809B CN202110388223.XA CN202110388223A CN113027809B CN 113027809 B CN113027809 B CN 113027809B CN 202110388223 A CN202110388223 A CN 202110388223A CN 113027809 B CN113027809 B CN 113027809B
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- China
- Prior art keywords
- sealing
- cover
- chemical pump
- fixedly connected
- mechanical seal
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention discloses a mechanical sealing structure for a chemical pump, which is convenient to replace and comprises two sealing sleeves, wherein the two sealing sleeves are movably arranged at the center of a pump cover of the chemical pump, and can be combined into a tubular structure; according to the invention, through the two semi-tubular sealing sleeves and the connecting cover, in the process of disassembling the mechanical sealing structure, the fixing bolt can be firstly screwed off from the gap on the chemical pump, then the sealing plate is disassembled, at the moment, after the sealing sleeves and the connecting cover are taken out from the pump cover on the chemical pump by a worker, the two half sealing sleeves and the connecting cover are disassembled, the mechanical sealing structure can be integrally taken out from the chemical pump, the mechanical sealing structure can be integrally disassembled without disassembling the chemical pump, and the operation is convenient.
Description
Technical Field
The invention relates to the technical field of chemical pumps, in particular to a mechanical sealing structure for a chemical pump, which is convenient to replace.
Background
Chemical industry pump is the equipment that is arranged in fields such as industry, petroleum and chemical industry, can carry different liquid to carry to equipment or holding vessel in, and the chemical industry pump mostly provides power through the principle of negative pressure or atmospheric pressure, for the leakproofness of guaranteeing in the chemical industry pump working process, people often can use mechanical seal structure to seal the inside of chemical industry pump to this normal clear of assurance transportation process.
Mechanical seal structure among current chemical pump is dismantling the in-process, need pull down the back one by one with the pump cover isotructure on the chemical pump, just can take out mechanical seal structure from the inside dismantlement of chemical pump, and the operation is comparatively inconvenient.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the mechanical sealing structure for the chemical pump, which is convenient to replace, has the advantage of convenience in disassembly and replacement, and solves the defect that the existing mechanical sealing structure for the chemical pump is inconvenient to operate when in disassembly.
The mechanical sealing structure for the chemical pump convenient to replace comprises two sealing sleeves, wherein the sealing sleeves are movably mounted at the center of a pump cover of the chemical pump, the two sealing sleeves can be combined into a tubular structure, the inner wall of each sealing sleeve is movably connected with a connecting cover, the inner wall of each connecting cover is fixedly connected with a supporting spring, the inner wall of each sealing sleeve is fixedly connected with a sealing element, one end, away from the connecting cover, of each supporting spring is movably connected with the inner wall of each sealing element, a sealing rubber ring is arranged inside each sealing element, a mounting groove is formed in the center of each connecting cover, the mounting groove in the center of each connecting cover is movably connected with a connecting pipe, the surface of each connecting pipe is movably connected with two semicircular bearings, sealing rubber is arranged between the two semicircular bearings, a movable groove matched with the semicircular bearings is formed in the surface of each connecting pipe, a connecting plate is fixedly connected with the top surface and the bottom surface of each sealing sleeve, a sealing plate is movably connected with the surface of each connecting pipe through a screw, movable grooves matched with the connecting pipe and the semicircular bearings are formed in the surface of each sealing plate, the pump cover and the sealing plate are in threaded connection through fixing bolts, the two sealing sleeves are connected with each other through the connecting plate through the fixing bolts, and the connecting plate through the fixing bolts.
Through the design of the technical scheme, two half tubular seal covers and connecting cover, make at the in-process of dismantling mechanical seal structure, can twist off fixing bolt in the space on the chemical pump earlier, dismantle the closing plate after that, the staff takes out the back in taking out the seal cover and connecting cover from the pump cover on the chemical pump this moment, unpack the seal cover and the connecting cover of two halves apart, mechanical seal structure wholly can follow and take out in the chemical pump, need not unpack the chemical pump wholly apart just can wholly carry out the dismouting to mechanical seal structure, convenient operation.
As a further improvement of the invention, the surfaces of the connecting cover and the semicircular bearing are fixedly connected with connecting sliding blocks, the inner wall of the sealing sleeve is provided with a sliding groove matched with the connecting sliding blocks, the number of the connecting sliding blocks arranged on the surfaces of the connecting cover and the semicircular bearing is three, the side cross section of each connecting sliding block is in a shape of an upper circle and a lower recess, the number of the sealing plates is two, and the two sealing plates are distributed on the side surface of the sealing sleeve by taking the horizontal center line of the side surface of the sealing sleeve as a symmetry axis.
Through the design of the technical scheme, the connecting sliding block is connected, so that the sealing sleeve can be smoothly taken out from the sealing sleeve in the process of detaching the sealing sleeve from the chemical pump, and the mechanical sealing structure can be conveniently disassembled and assembled and the sealing performance of the mechanical sealing structure is ensured.
As a further improvement of the invention, the top surface and the bottom surface of one of the sealing sleeves are fixedly connected with sealing rubber pads, the top surface of each sealing rubber pad is fixedly connected with an arc-shaped pressing plate, and the top surface and the bottom surface of the other sealing sleeve are respectively provided with a pressing groove matched with the sealing rubber pads and the arc-shaped pressing plates.
Through the design of the technical scheme, the arc-shaped pressing plate is arranged, so that after the two combined sealing sleeves are installed into the pump cover, a gap between the two sealing sleeves is sealed by the arc-shaped pressing plate and the sealing rubber gasket, and the sealing performance of the sealing sleeve is ensured.
As a further improvement of the invention, an unclosed opening is transversely formed in the middle of the front face of the supporting spring, the supporting spring is integrally designed in a spiral winding manner, a universal joint is fixedly connected to the surface of the fixing bolt, a screwing plate is fixedly connected to one end, away from the fixing bolt, of the universal joint, a screw opening is formed in the surface of the screwing plate, a rubber pipe is movably sleeved on the surface of the universal joint, and one end of the rubber pipe is movably connected with the side face of the screwing plate.
Through the design of the technical scheme, the opening and the universal joint are arranged on the supporting spring, so that the supporting spring can be convenient to disassemble while the elasticity of the supporting spring is ensured in the process of disassembling the mechanical sealing structure, an operator can directly stretch the screw into a gap on the chemical pump to screw the fixing bolt through the universal joint, the screw can be used for disassembling the fixing bolt without a larger space, and the disassembly of operators is facilitated.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the two semi-tubular sealing sleeves and the connecting cover, in the process of disassembling the mechanical sealing structure, the fixing bolt can be firstly screwed off from the gap on the chemical pump, then the sealing plate is disassembled, at the moment, after the sealing sleeves and the connecting cover are taken out from the pump cover on the chemical pump by a worker, the two half sealing sleeves and the connecting cover are disassembled, the mechanical sealing structure can be integrally taken out from the chemical pump, the mechanical sealing structure can be integrally disassembled without disassembling the chemical pump, and the operation is convenient.
2. According to the invention, the connecting slide block is connected, so that the connecting cover and the semicircular bearing in the sealing sleeve can be smoothly taken out of the sealing sleeve in the process of removing the sealing sleeve from the chemical pump, the mechanical sealing structure is convenient to disassemble and assemble, and meanwhile, the sealing performance of the mechanical sealing structure is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic front cross-sectional view of the present invention as installed on a chemical pump;
FIG. 2 is a schematic front sectional view of the entire apparatus in example 1 of the present invention;
FIG. 3 is a schematic side sectional view of the entire apparatus in example 2 of the present invention;
FIG. 4 is a schematic view of the overall front view structure of the supporting spring;
FIG. 5 is an enlarged schematic view of the structure at A in FIG. 2;
FIG. 6 is a schematic front sectional view of the entire apparatus in example 4 of the present invention.
In the figure: 1. sealing sleeves; 2. a connecting cover; 3. a support spring; 4. a seal member; 5. a connecting pipe; 6. a semicircular bearing; 7. a connecting plate; 8. a sealing plate; 9. fixing the bolt; 10. a pump cover; 11. connecting the sliding block; 12. a chemical pump; 13. sealing the rubber gasket; 14. an arc-shaped pressing plate; 15. a universal joint; 16. screwing a plate; 17. a rubber tube.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings for the sake of simplicity.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Example 1:
please refer to fig. 1-2, a mechanical seal structure for a chemical pump convenient to replace, including two seal cartridges 1, and the seal cartridges 1 are movably mounted at the center of a pump cover 10 of a chemical pump 12, the number of the seal cartridges 1 is two, and the two seal cartridges 1 can be combined into a tubular structure, the inner wall of each seal cartridge 1 is movably connected with a connecting cover 2, the inner wall of the connecting cover 2 is fixedly connected with a supporting spring 3, the inner wall of each seal cartridge 1 is fixedly connected with a sealing member 4, one end of the supporting spring 3 far away from the connecting cover 2 is movably connected with the inner wall of the sealing member 4, the inside of the two sealing members 4 is provided with a sealing rubber ring, the center of each connecting cover 2 is provided with a mounting groove, and the mounting groove of the center of the connecting cover 2 is movably connected with a connecting pipe 5, the surface of the connecting pipe 5 is movably connected with two semicircular bearings 6, a sealing rubber is arranged between the two semicircular bearings 6, and the surface of the connecting pipe 5 is provided with a movable groove adapted to the semicircular bearing 6, the top surface and the bottom surface of each seal cartridge 1 are fixedly connected with a connecting plate 7 through a screw bolt 9, and the fixed connecting plate 9 are connected with the seal cartridges 1 and the pump cover 9 through a bolt 9.
Embodiment 1 is through two half tubulose seal covers 1 and connecting cover 2, make at the in-process of dismantling mechanical seal structure, can follow earlier the back of unscrewing fixing bolt 9 in the space on chemical pump 12, dismantle closing plate 8 afterwards, the staff takes out the back in pump cover 10 on chemical pump 12 with seal cover 1 and connecting cover 2 this moment, take apart seal cover 1 and connecting cover 2 of two halves, mechanical seal structure is whole can be taken out from chemical pump 12, need not take the chemical pump 12 whole apart just can carry out the dismouting to mechanical seal structure wholly, convenient operation.
Example 2:
referring to fig. 3, the connecting sliding blocks 11 are fixedly connected to the surfaces of the connecting covers 2 and the semicircular bearings 6, sliding grooves matched with the connecting sliding blocks 11 are formed in the inner walls of the sealing sleeves 1, the number of the connecting sliding blocks 11 arranged on the surfaces of each connecting cover 2 and the semicircular bearing 6 is three, the side cross sections of the connecting sliding blocks 11 are in a shape that the upper circle is concave, the number of the sealing plates 8 is two, and the two sealing plates 8 are distributed on the side surfaces of the sealing sleeves 1 by taking the horizontal central line of the side surfaces of the sealing sleeves 1 as a symmetry axis.
Different from embodiment 1, through link block 11 for can be with the in-process that seal cover 1 demolishd from chemical pump 12, the connecting cover 2 and the half round bearing 6 in the seal cover 1 also can be smooth and easy take out from seal cover 1, when making things convenient for dismouting mechanical seal structure, guarantee its leakproofness.
Example 3:
referring to fig. 5, the top surface and the bottom surface of one sealing sleeve 1 are both fixedly connected with a sealing rubber pad 13, the top surface of each sealing rubber pad 13 is fixedly connected with an arc-shaped pressing plate 14, and the top surface and the bottom surface of the other sealing sleeve 1 are both provided with a pressing groove matched with the sealing rubber pad 13 and the arc-shaped pressing plate 14.
Different from the embodiment 2, the arc-shaped pressing plate 14 is arranged, so that after the two combined sealing sleeves 1 are installed in the pump cover 10, the gap between the two sealing sleeves 1 is sealed by the arc-shaped pressing plate 14 and the sealing rubber gasket 13, and the sealing performance of the gap is ensured.
Example 4:
referring to fig. 4 and 6, an unclosed opening is transversely formed in the middle of the front surface of the supporting spring 3, the supporting spring 3 is designed to be spirally wound as a whole, a universal joint 15 is fixedly connected to the surface of the fixing bolt 9, a screwing plate 16 is fixedly connected to one end, far away from the fixing bolt 9, of the universal joint 15, a screw is formed in the surface of the screwing plate 16, a rubber tube 17 is movably sleeved on the surface of the universal joint 15, and one end of the rubber tube 17 is movably connected to the side surface of the screwing plate 16.
Different from embodiment 3, the opening and the universal joint 15 arranged on the supporting spring 3 enable the supporting spring 3 to be convenient to detach while ensuring the elasticity of the supporting spring 3 in the process of detaching the mechanical sealing structure, and the universal joint 15 enables an operator to directly extend a screw into a gap on the chemical pump 12 to screw the fixing bolt 9, so that the fixing bolt 9 can be detached by the screw without a larger space, and the detachment of the operator is facilitated.
When the mechanical seal structure is used, if an operator needs to disassemble the mechanical seal structure, a screw can be lifted to extend into a gap on the chemical pump 12, the screwing plate 16 on the universal joint 15 is pulled to align with the head of the screw, then the screw is lifted, the fixing bolt 9 can be unscrewed through the universal joint 15, after the fixing bolt 9 is unscrewed, the bolt on the connecting plate 7 is unscrewed, the connecting plate 7 is disassembled, the seal sleeve 1 and the semicircular bearing 6 can be taken off from the pump cover 10 from the gap on the chemical pump 12, and after the seal sleeve 1 and other parts inside the seal sleeve are taken off from the chemical pump 12, the whole mechanical seal structure can be disassembled, so that the mechanical seal structure can be conveniently replaced by the operator.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a mechanical seal structure for chemical pump convenient to change, includes the seal cover, and seal cover movable mounting is in the pump cover center department of chemical pump, its characterized in that: the sealing device comprises two sealing sleeves, a connecting cover, a supporting spring, a sealing piece and sealing rubber rings, wherein the two sealing sleeves can be combined into a tubular structure, the inner wall of each sealing sleeve is movably connected with the connecting cover, the inner wall of the connecting cover is fixedly connected with the supporting spring, the inner wall of each sealing sleeve is fixedly connected with one sealing piece, one end, far away from the connecting cover, of the supporting spring is movably connected with the inner wall of each sealing piece, and the sealing rubber rings are arranged inside the two sealing pieces;
every the mounting groove has been seted up at the center of connecting cover, and the mounting groove swing joint at connecting cover center has a connecting pipe, the surperficial swing joint of connecting pipe has two semicircular bearings, is equipped with sealing rubber between two semicircular bearings, and the surface of connecting pipe set up with the movable groove of semicircular bearing looks adaptation, every the top surface and the equal fixedly connected with connecting plate in bottom surface of seal cover, the surface of connecting pipe has the closing plate through screw swing joint, the movable groove with connecting pipe, semicircular bearing looks adaptation is seted up on the surface of closing plate, the equal threaded connection in surface of connecting plate and closing plate has fixing bolt, and two seal covers pass through fixing bolt and connecting plate interconnect and be in the same place, the seal cover passes through fixing bolt swing joint on the surface of pump cover.
2. The mechanical seal structure for the chemical pump convenient to replace of claim 1, characterized in that: the connecting cover and the surface of the semicircular bearing are fixedly connected with connecting sliding blocks, and the inner wall of the sealing sleeve is provided with a sliding groove matched with the connecting sliding blocks.
3. The mechanical seal structure for the chemical pump convenient to replace of claim 2, characterized in that: the number of the connecting sliding blocks arranged on the surfaces of the connecting cover and the semicircular bearing is three, and the side sections of the connecting sliding blocks are in the shape of a circle at the top and a concave at the bottom.
4. The mechanical seal structure for the chemical pump convenient to replace of claim 1, characterized in that: the quantity of closing plate is two, and two closing plates use the side horizontal central line of seal cover as the side distribution of symmetry axis at the seal cover.
5. The mechanical seal structure for chemical pump convenient to change of claim 1, characterized in that: one the top surface and the bottom surface of the sealing sleeve are fixedly connected with sealing rubber pads, each sealing rubber pad is fixedly connected with an arc-shaped pressing plate, and the top surface and the bottom surface of the other sealing sleeve are provided with pressing grooves matched with the sealing rubber pads and the arc-shaped pressing plates.
6. The mechanical seal structure for the chemical pump convenient to replace of claim 1, characterized in that: the middle part of the front surface of the supporting spring is transversely provided with an unclosed opening, and the whole supporting spring is designed in a spiral winding mode.
7. The mechanical seal structure for the chemical pump convenient to replace of claim 1, characterized in that: the surface of the fixing bolt is fixedly connected with a universal joint, one end of the universal joint, which is far away from the fixing bolt, is fixedly connected with a twisting plate, and the surface of the twisting plate is provided with a screw port.
8. The mechanical seal structure for the chemical pump convenient to replace of claim 7, wherein: the surface of the universal joint is movably sleeved with a rubber pipe, and one end of the rubber pipe is movably connected with the side surface of the twisting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110388223.XA CN113027809B (en) | 2021-04-12 | 2021-04-12 | Mechanical seal structure for chemical pump convenient to change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110388223.XA CN113027809B (en) | 2021-04-12 | 2021-04-12 | Mechanical seal structure for chemical pump convenient to change |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113027809A CN113027809A (en) | 2021-06-25 |
| CN113027809B true CN113027809B (en) | 2022-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110388223.XA Active CN113027809B (en) | 2021-04-12 | 2021-04-12 | Mechanical seal structure for chemical pump convenient to change |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113027809B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2692429Y (en) * | 2004-04-21 | 2005-04-13 | 陈建忠 | Quick assembling disassembling shaft sealing device |
| DE102016201538B4 (en) * | 2016-02-02 | 2017-08-31 | Eagleburgmann Germany Gmbh & Co. Kg | Mechanical seal assembly of simplified construction |
| US10344866B2 (en) * | 2016-02-22 | 2019-07-09 | Baker Hughes, A Ge Company, Llc | Seal assembly for abrasion resistant bearing of centrifugal pump |
| CN210409957U (en) * | 2019-04-28 | 2020-04-28 | 河南中烟工业有限责任公司 | Sealing device for rotary moisture-removing filter screen |
| CN210282103U (en) * | 2019-07-11 | 2020-04-10 | 孙雨轩 | Nuclear power special main pump mechanical seal dismounting and supporting device |
| CN212838551U (en) * | 2020-09-01 | 2021-03-30 | 杭州宏图密封件科技有限公司 | Mechanical seal with good floatability for chemical pump |
-
2021
- 2021-04-12 CN CN202110388223.XA patent/CN113027809B/en active Active
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| Publication number | Publication date |
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| CN113027809A (en) | 2021-06-25 |
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