CN209943183U - Mechanical shaft seal system of water pump - Google Patents
Mechanical shaft seal system of water pump Download PDFInfo
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- CN209943183U CN209943183U CN201920664705.1U CN201920664705U CN209943183U CN 209943183 U CN209943183 U CN 209943183U CN 201920664705 U CN201920664705 U CN 201920664705U CN 209943183 U CN209943183 U CN 209943183U
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- shaft sleeve
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Abstract
The utility model provides a mechanical shaft seal system of a water pump, which comprises a pump body, a mechanical seal gland, a shaft sleeve, a static ring seal ring, a dynamic ring component, a spiral piece and a cooling water inlet; the right end of the mechanical seal gland and the left end face of the pump body are fastened together through a first locking bolt, and a gland sealing ring is arranged on the contact surface of the mechanical seal gland and the pump body; the mechanical seal gland and the inner space of the pump body form a pump cavity. The utility model provides a water pump machinery bearing seal system has following advantage: the utility model provides a water pump machinery bearing seal system, it is little not only to let out leakage quantity, and in addition, the flight is along with the axle sleeve synchronous revolution, with the stirring of surrounding stagnant water in the pump chamber, has reduced sound ring rotary seal face temperature, has prolonged elastic element life to the life of water pump machinery bearing seal system has been prolonged on the whole.
Description
Technical Field
The utility model belongs to the technical field of the water pump bearing seal, concretely relates to water pump machinery bearing seal system.
Background
The water pump shaft seal is a sealing device arranged for preventing the leakage between the pump shaft and the shell. Common types of shaft seals are packing seals and mechanical seals.
The packing sealing structure is simple, low in price and convenient to maintain. However, the packing seal has large leakage amount and poor sealing effect, high vacuum in a cavity of a water pump shell cannot be ensured, so that the water pump cannot be supplied with liquid after being started, and a standby circulating water pump cannot play a standby role in emergency, thereby endangering the safe and stable operation of the system. Therefore, a mechanical sealing method is generally adopted at present. However, the existing mechanical sealing methods generally have the following problems: the problem of short service life is common.
SUMMERY OF THE UTILITY MODEL
The defect to prior art exists, the utility model provides a water pump machinery bearing seal system can effectively solve above-mentioned problem.
The utility model adopts the technical scheme as follows:
the utility model provides a mechanical shaft seal system of a water pump, which comprises a pump body (1), a mechanical seal gland (2), a shaft sleeve (3), a static ring (4), a static ring seal ring (5), a movable ring component (6), a spiral sheet (7) and a cooling water inlet (8);
the right end of the mechanical seal gland (2) and the left end face of the pump body (1) are fastened together through a first locking bolt (9), and a gland seal ring (10) is arranged on the contact surface of the mechanical seal gland (2) and the pump body (1); the mechanical seal gland (2) and the inner space of the pump body (1) form a pump cavity (11);
the mechanical seal gland (2) is provided with a first opening matched with the shaft sleeve (3); a second open hole (12) with the diameter larger than that of the shaft sleeve (3) is formed in the right end of the pump body (1); the shaft sleeve (3) sequentially passes through the second opening (12) and the first opening, so that the shaft sleeve (3) and the second opening (12) of the pump body (1) have a gap for medium to enter;
the static ring (4) is sleeved in the pump cavity (11) and outside the shaft sleeve (3), the static ring (4) is tightly abutted against the inner side wall of the mechanical seal gland (2), and the static ring sealing ring (5) is arranged on the contact surface of the static ring (4) and the mechanical seal gland (2);
the movable ring assembly (6) comprises a movable ring seat body (6.1), an elastic element (6.2), a supporting seat (6.3), a movable ring (6.4) and a movable ring sealing ring (6.5); the movable ring base body (6.1) is sleeved outside the shaft sleeve (3), and the movable ring base body (6.1) is fastened with the shaft sleeve (3) through a second locking bolt (6.6); the supporting seat (6.3) is positioned on the left side of the movable ring seat body (6.1) and sleeved outside the shaft sleeve (3), the movable ring (6.4) is positioned on the left side of the supporting seat (6.3) and fastened together with the supporting seat (6.3) through a third locking bolt (6.7), and a movable ring sealing ring (6.5) is arranged between the movable ring (6.4) and the shaft sleeve (3); one end of the elastic element (6.2) is fixed with the supporting seat (6.3), the other end of the elastic element (6.2) is fixed with the movable ring seat body (6.1), and under the thrust of the elastic element (6.2), the whole formed by the supporting seat (6.3) and the movable ring (6.4) is tightly pressed on the right side of the fixed ring (4), so that the left side of the movable ring (6.4) and the right side of the fixed ring (4) are tightly attached together to form a movable ring sealing surface;
-mounting the spiral sheet (7) outside the sleeve (3) inside the pump chamber (11);
the machine seal gland (2) is provided with the cooling water inlet (8), and the cooling water inlet (8) is aligned with the sealing surface of the movable ring and the static ring.
Preferably, the elastic element (6.2) is a spring.
The utility model provides a water pump machinery bearing seal system has following advantage:
the utility model provides a water pump machinery bearing seal system, it is little not only to let out leakage quantity, and in addition, the flight is along with the axle sleeve synchronous revolution, with the stirring of surrounding stagnant water in the pump chamber, has reduced sound ring rotary seal face temperature, has prolonged elastic element life to the life of water pump machinery bearing seal system has been prolonged on the whole.
Drawings
Fig. 1 is the utility model provides a structural schematic of water pump machinery bearing seal system.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The utility model provides a water pump machinery bearing seal system mainly is applied to single-stage double suction formula centrifugal water pump, uses betterly at my circulating water system at present, utilizes this machinery bearing seal system, and it is little not only to let out leakage quantity, and in addition, the flight is along with the axle sleeve synchronous revolution, stirs the stagnant water of enclosing in the pump chamber, has reduced the rotatory sealed face temperature of sound ring, has prolonged elastic element life to the life of water pump machinery bearing seal system has been prolonged on the whole.
Referring to fig. 1, the mechanical shaft seal system of the water pump comprises a pump body 1, a mechanical seal gland 2, a shaft sleeve 3, a static ring 4, a static ring seal ring 5, a dynamic ring assembly 6, a spiral piece 7 and a cooling water inlet 8;
the right end of the mechanical seal gland 2 and the left end face of the pump body 1 are fastened together through a first locking bolt 9, and a gland seal ring 10 is arranged on the contact surface of the mechanical seal gland 2 and the pump body 1; the mechanical seal gland 2 and the inner space of the pump body 1 form a pump cavity 11;
the mechanical seal gland 2 is provided with a first opening matched with the shaft sleeve 3; the right end of the pump body 1 is provided with a second opening 12 with the diameter larger than that of the shaft sleeve 3; the shaft sleeve 3 sequentially passes through the second opening 12 and the first opening, so that the shaft sleeve 3 and the second opening 12 of the pump body 1 have a gap for medium to enter;
a static ring 4 is sleeved outside the shaft sleeve 3 in the pump cavity 11, the static ring 4 is tightly abutted against the inner side wall of the mechanical seal gland 2, and a static ring sealing ring 5 is arranged on the contact surface of the static ring 4 and the mechanical seal gland 2;
the movable ring assembly 6 comprises a movable ring seat body 6.1, an elastic element 6.2, a supporting seat 6.3, a movable ring 6.4 and a movable ring sealing ring 6.5; the movable ring base body 6.1 is sleeved outside the shaft sleeve 3, and the movable ring base body 6.1 is fastened with the shaft sleeve 3 through a second locking bolt 6.6; the supporting seat 6.3 is positioned at the left side of the movable ring seat body 6.1 and sleeved outside the shaft sleeve 3, the movable ring 6.4 is positioned at the left side of the supporting seat 6.3 and fastened together with the supporting seat 6.3 through a third locking bolt 6.7, and a movable ring sealing ring 6.5 is arranged between the movable ring 6.4 and the shaft sleeve 3; one end of an elastic element 6.2 is fixed with a supporting seat 6.3, the other end of the elastic element 6.2 is fixed with a movable ring seat body 6.1, under the thrust of the elastic element 6.2, the whole formed by the supporting seat 6.3 and the movable ring 6.4 is tightly pressed on the right side of the fixed ring 4, so that the left side of the movable ring 6.4 and the right side of the fixed ring 4 are tightly attached together to form a movable ring sealing surface;
the spiral sheet 7 is arranged outside the shaft sleeve 3 in the pump cavity 11; the mechanical seal gland 2 is provided with a cooling water inlet 8, and the cooling water inlet 8 is aligned with the sealing surface of the dynamic and static rings.
The working principle of the mechanical shaft seal system of the water pump is as follows:
(1) the shaft sleeve 3 is sleeved outside the main shaft; when the spindle drives the shaft sleeve 3 to rotate, in the rotating process of the shaft sleeve 3, on one hand, the movable ring base body 6.1 of the movable ring assembly 6 is fixed outside the shaft sleeve 3, the movable ring base body 6.1 rotates synchronously with the shaft sleeve 3, and the whole formed by the supporting seat 6.3 and the movable ring 6.4 is tightly abutted to the right side of the static ring 4 leftwards under the thrust action of the elastic element 6.2, so that the sealing surfaces of the movable ring 6.4 and the static ring 4 are tightly attached together, and the leakage of water in the pump cavity 11 is prevented. Specifically, the shaft and the shaft sleeve are relatively static and rotate synchronously, and the shaft has certain axial movement. The pretightening force of the elastic element 6.2 closely sticks the sealing surfaces of the movable ring and the static ring together to compensate the axial float displacement, so that the leakage can be avoided even if the shaft is axially displaced.
In addition, in this application, with supporting seat 6.3 and rotating ring 6.4 separation setting to through locking bolt locking together, rather than setting up as an integral structure, its reason is: because the movable ring 6.4 and the static ring are dynamic seals and have friction, when the movable ring 6.4 is used for a long time and has a certain degree of abrasion, only the movable ring 6.4 can be simply replaced, and the maintenance cost is reduced.
(2) In addition, when the rotating ring and the static ring form a dynamic seal, friction exists due to the contact of the rotating ring and the static ring, therefore, cooling water is directly introduced into the sealing surfaces of the rotating ring and the static ring through a cooling water inlet 8, the cooling water has two functions, 1 is used for cooling the sealing surfaces of the rotating ring and the static ring, frictional heat is generated because the sealing surfaces of the rotating ring and the static ring do relative rotation, and 2 is used for forming a water film with a certain thickness along with the rotation of the rotating ring when trace cooling water enters the space between the sealing surfaces of the rotating ring and the static ring, so that the effects of lubricating and sealing the sealing surfaces of the.
(3) In the present application, a spiral piece 7 is provided outside the sleeve 3, and a space is provided between the sleeve 3 and the pump body 1. In traditional design, the residual space in the pump cavity is full of stagnant water, is unfavorable for the cooling of the machine seal sound ring rotary seal face, and thereby the elastic element is soaked by the stagnant water for a long time and can the surface scale deposit reduce life-span. In the application, after the spiral sheet is welded on the shaft sleeve, the spiral sheet synchronously rotates along with the shaft sleeve, and the dead water around the spiral sheet is stirred to enable the water to flow, so that the effect of reducing the temperature of the rotating sealing surface of the moving and static rings can be achieved, and the service life of the elastic element can be prolonged.
The circulating water pump almost has no leakage at the shaft seal, ensures high vacuum in the pump shell, reduces the starting time and reduces the running risk of the whole process system. In addition, tests show that the shaft seal can continuously run for 1-2 years or longer;
the utility model provides a water pump machinery bearing seal system has following advantage:
the utility model provides a water pump machinery bearing seal system, it is little not only to let out leakage quantity, and in addition, the flight is along with the axle sleeve synchronous revolution, with the stirring of surrounding stagnant water in the pump chamber, has reduced sound ring rotary seal face temperature, has prolonged elastic element life to the life of water pump machinery bearing seal system has been prolonged on the whole.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be viewed as the protection scope of the present invention.
Claims (2)
1. A mechanical shaft seal system of a water pump is characterized by comprising a pump body (1), a mechanical seal gland (2), a shaft sleeve (3), a static ring (4), a static ring sealing ring (5), a dynamic ring assembly (6), a spiral sheet (7) and a cooling water inlet (8);
the right end of the mechanical seal gland (2) and the left end face of the pump body (1) are fastened together through a first locking bolt (9), and a gland seal ring (10) is arranged on the contact surface of the mechanical seal gland (2) and the pump body (1); the mechanical seal gland (2) and the inner space of the pump body (1) form a pump cavity (11);
the mechanical seal gland (2) is provided with a first opening matched with the shaft sleeve (3); a second open hole (12) with the diameter larger than that of the shaft sleeve (3) is formed in the right end of the pump body (1); the shaft sleeve (3) sequentially passes through the second opening (12) and the first opening, so that the shaft sleeve (3) and the second opening (12) of the pump body (1) have a gap for medium to enter;
the static ring (4) is sleeved in the pump cavity (11) and outside the shaft sleeve (3), the static ring (4) is tightly abutted against the inner side wall of the mechanical seal gland (2), and the static ring sealing ring (5) is arranged on the contact surface of the static ring (4) and the mechanical seal gland (2);
the movable ring assembly (6) comprises a movable ring seat body (6.1), an elastic element (6.2), a supporting seat (6.3), a movable ring (6.4) and a movable ring sealing ring (6.5); the movable ring base body (6.1) is sleeved outside the shaft sleeve (3), and the movable ring base body (6.1) is fastened with the shaft sleeve (3) through a second locking bolt (6.6); the supporting seat (6.3) is positioned on the left side of the movable ring seat body (6.1) and sleeved outside the shaft sleeve (3), the movable ring (6.4) is positioned on the left side of the supporting seat (6.3) and fastened together with the supporting seat (6.3) through a third locking bolt (6.7), and a movable ring sealing ring (6.5) is arranged between the movable ring (6.4) and the shaft sleeve (3); one end of the elastic element (6.2) is fixed with the supporting seat (6.3), the other end of the elastic element (6.2) is fixed with the movable ring seat body (6.1), and under the thrust of the elastic element (6.2), the whole formed by the supporting seat (6.3) and the movable ring (6.4) is tightly pressed on the right side of the fixed ring (4), so that the left side of the movable ring (6.4) and the right side of the fixed ring (4) are tightly attached together to form a movable ring sealing surface;
-mounting the spiral sheet (7) outside the sleeve (3) inside the pump chamber (11);
the machine seal gland (2) is provided with the cooling water inlet (8), and the cooling water inlet (8) is aligned with the sealing surface of the movable ring and the static ring.
2. The water pump mechanical shaft seal system according to claim 1, characterized in that the elastic element (6.2) is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920664705.1U CN209943183U (en) | 2019-05-10 | 2019-05-10 | Mechanical shaft seal system of water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920664705.1U CN209943183U (en) | 2019-05-10 | 2019-05-10 | Mechanical shaft seal system of water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209943183U true CN209943183U (en) | 2020-01-14 |
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ID=69131892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920664705.1U Active CN209943183U (en) | 2019-05-10 | 2019-05-10 | Mechanical shaft seal system of water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209943183U (en) |
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2019
- 2019-05-10 CN CN201920664705.1U patent/CN209943183U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 277527 Mushi Town, Tengzhou City, Zaozhuang City, Shandong Province (resident) Patentee after: Lianhong (Shandong) Chemical Co.,Ltd. Address before: 277527 Mushi Town, Tengzhou City, Zaozhuang City, Shandong Province (resident) Patentee before: XINNENG FENGHUANG (TENGZHOU) ENERGY CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder |