CN115638107B - Mechanical sealing medium supply control device for Roots blower - Google Patents
Mechanical sealing medium supply control device for Roots blower Download PDFInfo
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- CN115638107B CN115638107B CN202211358473.XA CN202211358473A CN115638107B CN 115638107 B CN115638107 B CN 115638107B CN 202211358473 A CN202211358473 A CN 202211358473A CN 115638107 B CN115638107 B CN 115638107B
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- storage box
- liquid storage
- sealing liquid
- casing
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 83
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 72
- 238000005192 partition Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a mechanical sealing medium supply control device for a Roots blower, which comprises a casing and is characterized in that: the motor is installed to one side of casing, the output shaft of motor has the fan axle through the shaft coupling, the both ends bolted connection of fan axle has the fixed block in the casing, two equal bolted connection in one side of keeping away from each other of fixed block has the elastic sheet, and the outer wall correspondence sliding connection of fan axle has the movable block in the casing, the one end and the movable block of elastic sheet are connected, the other end and the fixed block of elastic sheet are connected, one side of elastic sheet is connected with rotatory separation piece, one side of casing is provided with the end cover through the bolt fastening, the movable block is provided with the sealing washer in the embedding of one side that contacts with the end cover, the both ends of fan axle correspond to be offered the transportation spiral, the direction of rotation of two transportation spirals is opposite, the one end of transportation spiral extends to the position with the end cover inner wall parallel and level, and the invention has the characteristics that the practicality is strong.
Description
Technical Field
The invention relates to the technical field of blowers, in particular to a mechanical sealing medium supply control device for a Roots blower.
Background
The Roots blower is a blower which pumps a medium by utilizing the meshing force of Roots blades, and when in use, the Roots pump is connected with an air source through a pipeline, and the Roots pump is used as a suction pump to convey air in a specific direction.
When transporting some poisonous gas, gas can permeate out from the junction of its drive shaft and casing and cause the environment to receive the pollution, adopts modes such as mechanical seal and hydrostatic seal in order to prevent revealing generally, but mechanical seal can cause the loss of sealing washer along with the operation of pump leaf, can cause gas leakage for a long time, and the practicality is poor. Therefore, it is necessary to design a mechanical sealing medium supply control device for a Roots blower with high practicality.
Disclosure of Invention
The present invention has been made to solve the above-described problems occurring in the prior art, and an object of the present invention is to provide a mechanical seal medium supply control device for a Roots blower.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a mechanical seal medium supply control device for roots blower, includes casing, its characterized in that: the motor is installed to one side of casing, the output shaft of motor has the fan axle through the coupling joint, in the casing the both ends bolted connection of fan axle has the fixed block, two equal bolted connection in one side of keeping away from each other of fixed block has the elastic sheet, in the casing the outer wall of fan axle corresponds sliding connection and has the movable block, the one end and the movable block of elastic sheet are connected, the other end and the fixed block of elastic sheet are connected, one side of elastic sheet is connected with rotatory separation piece, one side of casing has the end cover through the bolt fastening, the movable block forms mechanical contact seal with the internal face of casing or end cover when the fan axle is static, mechanical seal no longer functions when the fan axle rotates.
According to the technical scheme, the movable block is embedded with the sealing ring at one side contacted with the end cover.
According to the technical scheme, the transportation spiral is arranged at the two ends of the fan shaft corresponding to the connecting sleeve, the rotation directions of the two transportation spirals are opposite, one end of the transportation spiral extends to the position flush with the inner wall of the end cover, one end of the other transportation spiral extends to the position flush with the inner wall of the shell, one end of the fan shaft extends out of the outer wall of the shell, and the transportation spiral is connected with an external constant pressure liquid supply source through a through hole in the corresponding connecting sleeve.
According to the technical scheme, the two ends of the fan shaft are correspondingly sleeved with the connecting sleeves, one connecting sleeve is fixed on one side, far away from the shell, of the end cover through welding, the other connecting sleeve is fixed on one side, far away from the end cover, of the shell through welding, through holes are formed in the connecting sleeves, one side of each connecting sleeve is respectively and penetratingly connected with a first sealing liquid storage box and a second sealing liquid storage box, the first sealing liquid storage box and the second sealing liquid storage box are fixed on the shell through welding, and one ends of the first sealing liquid storage box and the second sealing liquid storage box are jointly and penetratingly connected with a Roots pump.
According to the technical scheme, one end of the fan shaft extends out of the outer wall of the shell, the Roots pump blade is correspondingly arranged in the Roots pump, and one end of the fan shaft is connected with the Roots pump blade through welding.
According to the technical scheme, the first sealing liquid storage box and the second sealing liquid storage box are both connected with the partition plate in a sliding mode, the cavity on one side of the partition plate is communicated with the connecting sleeve, the cavity on the other side of the partition plate is communicated with the output end of the Roots pump, and the input end of the Roots pump is communicated with outside air.
According to the technical scheme, the first sealing liquid storage box and the second sealing liquid storage box are connected with the connecting ends of the Roots pump through the through connection with the pressure stabilizing valve, and the working pressure of the pressure stabilizing valve is adjustable.
According to the technical scheme, springs are connected between the partition plate and the inner walls of the chambers on the other sides of the first sealing liquid storage box and the second sealing liquid storage box.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, by utilizing two sealing modes, contact type sealing is adopted when the fan stops running, and a liquid sealing mode is adopted when the fan runs, so that the damage caused by continuous running of the sealing ring is prevented, the sealing effect is good, and leakage of gas and sealing medium is avoided.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall principle of the present invention;
FIG. 2 is a schematic diagram of the hydraulic principle of the present invention;
FIG. 3 is a schematic view of a partial structure of a housing according to the present invention;
FIG. 4 is a schematic diagram of the operational state of the housing according to the present invention;
in the figure: 1. a housing; 2. a motor; 3. roots pump; 41. a sealing liquid storage box I; 42. a second sealing liquid storage box; 43. a partition plate; 44. a spring; 31. roots pump blade; 32. a pressure stabilizing valve; 11. an end cap; 12. connecting sleeves; 21. a fan shaft; 211. a transport screw; 51. a fixed block; 52. an elastic sheet; 53. a movable block; 54. the separation block is rotated.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides the following technical solutions: the mechanical sealing medium supply control device for the Roots blower comprises a casing 1 and is characterized in that: the motor 2 is installed on one side of the casing 1, the output shaft of the motor 2 is connected with the fan shaft 21 through a coupling, the two ends of the fan shaft 21 in the casing are connected with the fixed blocks 51 through bolts, one sides of the two fixed blocks 51 far away from each other are connected with the elastic piece 52 through bolts, the outer wall of the fan shaft 21 in the casing is correspondingly and slidably connected with the movable piece 53, one end of the elastic piece 52 is connected with the movable piece 53, the other end of the elastic piece 52 is connected with the fixed block 51, one side of the elastic piece 52 is connected with the rotary separation piece 54, the end cover 11 is fixed on one side of the casing 1 through bolts, the motor 2 is started to drive the fan shaft 21 to rotate, so that the rotary separation piece 54 is thrown outwards due to inertia, the bending degree of the elastic piece 52 is driven to be increased, the movable piece 53 slides towards the middle part of the fan shaft 21, and the mechanical seal is prevented from being damaged due to the fact that the mechanical seal is not acted again when the fan shaft 21 rotates with the inner wall of the casing 1 or the end cover 11;
the movable block 53 is embedded with a sealing ring 531 at one side contacted with the end cover 11, the sealing ring 531 is used for improving the sealing effect of the movable block 53 between the movable block 53 and the end cover 11 when in static contact, and the movable block 53 moves away when in operation, the sealing ring 531 is suspended, so that abrasion is not caused;
the two ends of the fan shaft 21 are provided with the conveying screws 211 corresponding to the connecting sleeve 12, the rotation directions of the two conveying screws 211 are opposite, one end of one conveying screw 211 extends to a position flush with the inner wall of the end cover 11, one end of the other conveying screw 211 extends to a position flush with the inner wall of the machine shell 1, one end of the fan shaft 21 extends out of the outer wall of the machine shell 1, the conveying screw 211 is connected with an external constant-pressure liquid supply source through a through hole corresponding to the connecting sleeve 12, the external constant-pressure liquid supply source is a sealing liquid storage box I41 or a sealing liquid storage box II 42, the conveying screw 211 can be driven to rotate when the fan shaft 21 runs, at the moment, liquid is continuously introduced inwards to form certain liquid pressure, the conveying screw 211 pumps the liquid outwards, the pressure of the conveying screw 211 and the two conveying screws counteract each other to form a constant-position gas-liquid contact surface, and accordingly the sealing effect of the extending position of the fan shaft 21 is improved;
the two ends of the fan shaft 21 are correspondingly sleeved with connecting sleeves 12, one connecting sleeve 12 is fixed on one side, far away from the shell 1, of the end cover 11 through welding, the other connecting sleeve 12 is fixed on one side, far away from the end cover 11, of the shell 1 through welding, through holes are formed in the connecting sleeves 12, one sides of the two connecting sleeves 12 are respectively connected with a first sealing liquid storage box 41 and a second sealing liquid storage box 42 in a penetrating mode, the first sealing liquid storage box 41 and the second sealing liquid storage box 42 are fixed on the shell 1 through welding, one ends of the first sealing liquid storage box 41 and the second sealing liquid storage box 42 are connected with a Roots pump 3 in a penetrating mode, the fan shaft 21 is started, meanwhile the Roots pump 3 is started, sealing liquid is extruded into the conveying screw 211 from the first sealing liquid storage box 41 and the second sealing liquid storage box 42, meanwhile the conveying screw 211 can convey the liquid upwards, a solid-liquid interface is formed between the sealing liquid storage box 41 and the sealing liquid storage box, and gaps between the fan shaft 21 and the end cover 11 are filled, and a better sealing effect is achieved;
one end of the fan shaft 21 extends out of the outer wall of the shell 1, the Roots pump blade 31 is correspondingly arranged in the Roots pump 3, one end of the fan shaft 21 is connected with the Roots pump blade 31 through welding, the Roots pump 3 can rotate to drive the Roots pump blade 31 to rotate so as to pump gas, so that upward pressure is formed in the sealing liquid storage box I41, synchronous operation is facilitated, liquid is not pumped when the fan shaft 21 stops rotating, contact sealing is restored at the moment, and switching synchronism is high;
the first sealing liquid storage box 41 and the second sealing liquid storage box 42 are both connected with a baffle plate 43 in a sliding manner, a cavity on one side of the baffle plate 43 is communicated with the connecting sleeve 12, a cavity on the other side of the baffle plate 43 is communicated with the output end of the Roots pump 3, the input end of the Roots pump 3 is communicated with the outside air, and the sealing liquid is separated from the cavity of the Roots pump 3 through the baffle plate 43, so that the sealing liquid is further prevented from leaking from the other end and is prevented from being communicated with the outside air;
the connecting ends of the first sealing liquid storage box 41 and the second sealing liquid storage box 42 and the Roots pump 3 are connected with the pressure stabilizing valve 32 in a penetrating way, the working pressure of the pressure stabilizing valve 32 is adjustable, when the Roots pump blade 31 rotates, air in the interior is extruded into the first sealing liquid storage box 41 and the second sealing liquid storage box 42, so that upward pressure exists in the first sealing liquid storage box 41 and the second sealing liquid storage box 42 all the time, the pressure is always stabilized at a certain constant value through the pressure stabilizing valve 32, the continuous operation of the Roots pump blade 31 is convenient, the sealing is not blocked because the gas cannot be continuously pumped, and the boundary position between the gas and the liquid in the transportation screw 211 is adjusted by adjusting the working pressure of the pressure stabilizing valve 32, so that the leakage of the gas or the penetration of the liquid into the casing 1 is prevented;
springs 44 are connected between the partition plate 43 and the inner walls of the chambers at the other sides of the first sealing liquid storage box 41 and the second sealing liquid storage box 42, when liquid starts to be pumped, the partition plate 43 moves upwards to drive the springs 44 to stretch, and when pumping is stopped, the chambers below the partition plate 43 are reduced due to the fact that the springs 44 restore to the original state, sealing liquid is sucked out of the conveying screw 211, and therefore loss of the sealing liquid is prevented.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The mechanical sealing medium supply control device for the Roots blower comprises a casing (1), and is characterized in that: the motor (2) is installed on one side of the casing (1), the fan shaft (21) is connected to an output shaft of the motor (2) through a coupler, the fixed blocks (51) are connected to two ends of the fan shaft (21) in the casing through bolts, the elastic pieces (52) are connected to one sides, far away from each other, of the fixed blocks (51), the movable blocks (53) are correspondingly and slidably connected to the outer wall of the fan shaft (21) in the casing, one end of each elastic piece (52) is connected with each movable block (53), the other end of each elastic piece (52) is connected with the corresponding fixed block (51), the rotary separation block (54) is connected to one side of each elastic piece (52), the end cover (11) is fixed to one side of the casing (1) through bolts, and when the fan shaft (21) is stationary, the movable blocks (53) form mechanical contact sealing with the inner wall surface of the casing (1) or the end cover (11), and the mechanical sealing does not act any more when the fan shaft (21) rotates.
The two ends of the fan shaft (21) are correspondingly sleeved with connecting sleeves (12), one connecting sleeve (12) is fixed on one side, far away from the shell (1), of the end cover (11) through welding, the other connecting sleeve (12) is fixed on one side, far away from the end cover (11), of the shell (1) through welding, a through hole is formed in the connecting sleeve (12), one side of the one connecting sleeve (12) is connected with a sealing liquid storage box I in a penetrating manner, one side of the other connecting sleeve (12) is connected with a sealing liquid storage box II (42) in a penetrating manner, the sealing liquid storage box I (41) and the sealing liquid storage box II (42) are fixed on the shell (1) through welding, and one ends of the sealing liquid storage box I (41) and the sealing liquid storage box II (42) are connected with a Roots pump (3) in a penetrating manner;
the sealing liquid storage box I (41) and the sealing liquid storage box II (42) are both connected with a partition plate (43) in a sliding manner, a cavity on one side of the partition plate (43) is communicated with the connecting sleeve (12), a cavity on the other side of the partition plate (43) is communicated with the output end of the Roots pump (3), and the input end of the Roots pump (3) is communicated with the outside air;
the connecting ends of the first sealing liquid storage box (41) and the second sealing liquid storage box (42) and the Roots pump (3) are connected with a pressure stabilizing valve (32) through a through connection, and the working pressure of the pressure stabilizing valve (32) can be adjusted;
springs (44) are connected between the partition plate (43) and the inner walls of the chambers at the other sides of the first sealing liquid storage box (41) and the second sealing liquid storage box (42);
the two ends of the fan shaft (21) are provided with conveying screws (211) corresponding to the connecting sleeves (12), the rotation directions of the two conveying screws (211) are opposite, one end of one conveying screw (211) extends to a position flush with the inner wall of the end cover (11), one end of the other conveying screw (211) extends to a position flush with the inner wall of the shell (1), one end of the fan shaft (21) extends out of the outer wall of the shell (1), the conveying screw (211) is connected with an external constant-pressure liquid supply source through a through hole on the corresponding connecting sleeve (12), and the external constant-pressure liquid supply source is a sealing liquid storage box I (41) or a sealing liquid storage box II (42);
one end of the fan shaft (21) extends out of the outer wall of the shell (1), a Roots pump blade (31) is correspondingly arranged in the Roots pump (3), and one end of the fan shaft (21) is connected with the Roots pump blade (31) through welding.
2. The mechanical seal medium supply control device for a roots blower according to claim 1, wherein: the movable block (53) is embedded with a sealing ring (531) at one side contacted with the end cover (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211358473.XA CN115638107B (en) | 2022-11-01 | 2022-11-01 | Mechanical sealing medium supply control device for Roots blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211358473.XA CN115638107B (en) | 2022-11-01 | 2022-11-01 | Mechanical sealing medium supply control device for Roots blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115638107A CN115638107A (en) | 2023-01-24 |
| CN115638107B true CN115638107B (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211358473.XA Active CN115638107B (en) | 2022-11-01 | 2022-11-01 | Mechanical sealing medium supply control device for Roots blower |
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| CN (1) | CN115638107B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB820348A (en) * | 1957-02-12 | 1959-09-16 | Alsacienne Constr Meca | Means for ensuring fluid-tightness between two gases separated by a wall through which passes a rotating shaft |
| US4235572A (en) * | 1977-12-01 | 1980-11-25 | Balzers Aktiengesellschaft Fur Hochvakuumtechnik Und Dunne Schichten | Rotary displacement pump with intake through a first sealing slide |
| JPS58113660A (en) * | 1981-12-07 | 1983-07-06 | Kyodo Kikai Seisakusho:Kk | Shaft sealing device |
| DE19963170A1 (en) * | 1999-12-27 | 2001-06-28 | Leybold Vakuum Gmbh | Vacuum pump with shaft sealant |
| CN101135317A (en) * | 2006-08-29 | 2008-03-05 | 上海市化工装备研究所 | Built-in type parking sealing arrangement |
| CN201090446Y (en) * | 2007-06-15 | 2008-07-23 | 天津市联强机械密封技术有限公司 | Packaging type double end surface sealing device on Roots fan input shaft |
| CN203641007U (en) * | 2013-12-26 | 2014-06-11 | 九江中科鑫星新材料有限公司 | Shaft sealing device between Roots pump end cover shell and pump cavity |
| CN111692123A (en) * | 2020-05-09 | 2020-09-22 | 青海盐湖工业股份有限公司 | Double-end-face mechanical sealing device for pump |
| CN112032096A (en) * | 2018-12-31 | 2020-12-04 | 马瓯丽 | Leakage-proof sealing device for liquid pump |
-
2022
- 2022-11-01 CN CN202211358473.XA patent/CN115638107B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB820348A (en) * | 1957-02-12 | 1959-09-16 | Alsacienne Constr Meca | Means for ensuring fluid-tightness between two gases separated by a wall through which passes a rotating shaft |
| US4235572A (en) * | 1977-12-01 | 1980-11-25 | Balzers Aktiengesellschaft Fur Hochvakuumtechnik Und Dunne Schichten | Rotary displacement pump with intake through a first sealing slide |
| JPS58113660A (en) * | 1981-12-07 | 1983-07-06 | Kyodo Kikai Seisakusho:Kk | Shaft sealing device |
| DE19963170A1 (en) * | 1999-12-27 | 2001-06-28 | Leybold Vakuum Gmbh | Vacuum pump with shaft sealant |
| CN101135317A (en) * | 2006-08-29 | 2008-03-05 | 上海市化工装备研究所 | Built-in type parking sealing arrangement |
| CN201090446Y (en) * | 2007-06-15 | 2008-07-23 | 天津市联强机械密封技术有限公司 | Packaging type double end surface sealing device on Roots fan input shaft |
| CN203641007U (en) * | 2013-12-26 | 2014-06-11 | 九江中科鑫星新材料有限公司 | Shaft sealing device between Roots pump end cover shell and pump cavity |
| CN112032096A (en) * | 2018-12-31 | 2020-12-04 | 马瓯丽 | Leakage-proof sealing device for liquid pump |
| CN111692123A (en) * | 2020-05-09 | 2020-09-22 | 青海盐湖工业股份有限公司 | Double-end-face mechanical sealing device for pump |
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| CN115638107A (en) | 2023-01-24 |
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