CN216788781U - Shaft seal sealing structure of spiral submersible slurry pump and spiral submersible slurry pump - Google Patents
Shaft seal sealing structure of spiral submersible slurry pump and spiral submersible slurry pump Download PDFInfo
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- CN216788781U CN216788781U CN202220419639.3U CN202220419639U CN216788781U CN 216788781 U CN216788781 U CN 216788781U CN 202220419639 U CN202220419639 U CN 202220419639U CN 216788781 U CN216788781 U CN 216788781U
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Abstract
The utility model provides a shaft seal sealing structure of a spiral submersible slurry pump and the spiral submersible slurry pump, belonging to the technical field of slurry pumps and comprising a pump shaft, an oil chamber and a mechanical seal, wherein the oil chamber is assembled on the pump shaft, and a rear sealing part and a front sealing part are arranged in the oil chamber; the rear end of the mechanical seal and the rear seal part form a rear end seal for the oil chamber, the front end of the mechanical seal is fastened on the front end surface of the front seal part through a fastening bolt, and the fastening bolt does not penetrate through the front seal part to form a front end seal for the oil chamber. In the embodiment, the front sealing part is arranged in the oil chamber, when the mechanical seal is installed, the mechanical seal only needs to be directly penetrated and screwed with the front sealing part through a bolt, and the front sealing part is arranged at the front end of the oil chamber and does not need to extend into the cavity of the oil chamber by hand, so that the installation is simple and convenient, and time and labor are saved; and the mechanical seal needs the matching of the end faces when in bolt connection with the front sealing part, so that the contact surface of the seal is increased, and the sealing effect is also improved.
Description
Technical Field
The utility model belongs to the technical field of slurry pumps, and particularly relates to a shaft seal sealing structure of a spiral submersible slurry pump and the spiral submersible slurry pump.
Background
The Submersible slurry pump (Submersible pump) is widely used for conveying abrasive slurry containing solid particles in the industries of mines, electricity, metallurgy, coal, environmental protection and the like. Such as ore pulp conveying in metallurgical ore dressing plant, hydraulic ash removal in thermal power plant, coal slurry and heavy medium conveying in coal washing plant, dredging river, etc. In the chemical industry, corrosive slurries containing crystals can also be transported.
The reliability of shaft seal sealing is an important part for ensuring the normal work of the submersible slurry pump, and because the working environment of the submersible slurry pump is severe, the mechanical seal used as the shaft seal is easy to damage and needs to be replaced in time after being damaged.
The existing shaft seal form needs a handle to extend into an oil chamber cavity to install the mechanical seal, and the mechanical seal cannot be installed in place due to the small space of the oil chamber cavity, so that leakage is easily caused due to the poor seal; and the installation mode of the mechanical seal wastes time and labor, and delays normal production operation.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a shaft seal sealing structure of a spiral submersible slurry pump and the spiral submersible slurry pump, aiming at reducing the installation strength of a mechanical seal and improving the sealing effect of a shaft seal.
In order to achieve the above object, the first aspect of the present invention employs the following technical solutions: the utility model provides a shaft seal structure of spiral dive sediment stuff pump, includes: the pump comprises a pump shaft, an oil chamber and a mechanical seal, wherein the oil chamber is assembled on the pump shaft, and a rear sealing part and a front sealing part are arranged in the oil chamber; the rear end of the mechanical seal and the rear seal part form a rear end seal for the oil chamber, the front end of the mechanical seal is fastened on the front end surface of the front seal part through a fastening bolt, and the fastening bolt does not penetrate through the front seal part to form a front end seal for the oil chamber.
With reference to the first aspect, in a possible implementation manner, the front sealing portion is an annular disk extending in the pump shaft direction, the mechanical seal has a flange plate abutting against a front end face of the annular disk, and the mechanical seal is fastened to the annular disk by a fastening bolt penetrating through the flange plate.
With reference to the first aspect, in one possible implementation manner, the front sealing portion is provided with a thickened portion protruding rearward in an axial direction of the fastening bolt, and the fastening bolt does not penetrate through the thickened portion.
With reference to the first aspect, in a possible implementation manner, a front sealing ring is further disposed between the front end surface of the front sealing portion and the flange of the mechanical seal.
With reference to the first aspect, in a possible implementation manner, a front annular groove for limiting the front sealing ring is formed in the front end surface of the front sealing portion and located on the inner side of the front end surface.
With reference to the first aspect, in a possible implementation manner, the rear end of the mechanical seal extends between the rear sealing portion and the pump shaft, and a rear sealing ring is disposed between the inner side surface of the rear sealing portion and the outer circumferential surface of the mechanical seal.
With reference to the first aspect, in a possible implementation manner, a rear annular groove for positioning the rear seal ring is formed on the outer circumferential surface of the mechanical seal.
With reference to the first aspect, in a possible implementation manner, the pump further includes a shaft sleeve sleeved on the pump shaft, and the mechanical seal is hermetically assembled on the shaft sleeve.
With reference to the first aspect, in a possible implementation manner, an inner sealing ring is disposed between the mechanical seal and the shaft sleeve, and an inner positioning groove for positioning the inner sealing ring is disposed on an inner circumferential surface of the mechanical seal.
Compared with the prior art, the shaft seal sealing structure of the spiral submersible slurry pump has the beneficial effects that: the front sealing part is arranged in the oil chamber, when the mechanical seal is installed, the mechanical seal only needs to be directly penetrated and screwed with the front sealing part through bolts, and the front sealing part is arranged at the front end of the oil chamber and does not need to extend into the cavity of the oil chamber by hand, so that the installation is simple and convenient, and time and labor are saved; and the mechanical seal is connected with the bolt of the front sealing part by the end face matching, so that the sealing contact surface is increased, and the sealing effect is improved.
In a second aspect, the embodiment of the utility model also provides a submersible slurry pump, which comprises a submersible explosion-proof motor, a shaft seal sealing structure of the spiral submersible slurry pump and a pump assembly, wherein the rear end of an oil chamber of the shaft seal sealing structure of the spiral submersible slurry pump is connected to a motor shell of the submersible explosion-proof motor, and the pump assembly is connected to the front end of the oil chamber.
According to the submersible slurry pump provided by the embodiment of the utility model, the mechanical seal connected with the oil chamber bolt is adopted, so that the labor intensity is greatly reduced, the labor time is saved, the time for replacing equipment and maintaining is shortened, and the working efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a spiral submersible slurry pump provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a shaft seal sealing structure of a spiral submersible slurry pump according to an embodiment of the present invention;
description of reference numerals:
1. a volute; 2. an impeller; 3. a rear guard plate; 4. a front platen; 5. a front guard plate; 6. filtering with a screen; 7. fastening a bolt; 8. a front seal ring; 9. a rear seal ring; 10. an oil chamber; 101. an oil filler hole; 102. a front sealing part; 103. a rear sealing part; 11. plugging with a thread; 12. a submersible explosion-proof motor; 13. a pump shaft; 14. a shaft sleeve; 15. mechanical sealing; 16. and an inner sealing ring.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1 (a) and fig. 2, the shaft seal sealing structure of the spiral submersible slurry pump according to the present invention will now be described. The shaft seal sealing structure of the spiral submersible slurry pump comprises a pump shaft 13, an oil chamber 10 and a mechanical seal 15, wherein the oil chamber 10 is assembled on the pump shaft 13, and a rear sealing part 103 and a front sealing part 102 are arranged in the oil chamber 10; the mechanical seal 15 has a rear end sealed against the oil chamber 10 with the rear seal 103, and a front end fastened to the front end surface of the front seal 102 by the fastening bolt 7, and the fastening bolt 7 does not penetrate the front seal 102, thereby sealing against the front end of the oil chamber 10.
Compared with the prior art, the shaft seal sealing structure of the spiral submersible slurry pump is characterized in that the front sealing part 102 is arranged in the oil chamber 10, when the mechanical seal 15 is installed, only the mechanical seal 15 needs to be directly penetrated and screwed with the front sealing part 102, and the front sealing part 102 is arranged at the front end of the oil chamber 10 and does not need to extend into the cavity of the oil chamber 10 by hand, so that the installation is simple and convenient, and time and labor are saved; and because the bolt connection of the mechanical seal 15 and the front sealing part 102 needs the matching of end faces, the contact surface of the seal is increased, and the sealing effect is also improved.
The rear end of the oil chamber 10 is sealed through the matching of the rear sealing part 103 and the mechanical seal 15, the structure is simple, the operation is simple and convenient, the time and the labor are saved, the sealing is reliable, the leakage is avoided, the working performance of the pump body is improved, the abrasion damage to the pump body is reduced, and the service life of related parts is integrally prolonged.
Optionally, two oil filling holes 101 are arranged on the oil chamber 10, and two screw plugs 11 are arranged to block the oil filling holes 101.
In some embodiments, referring to fig. 1 (a) and fig. 2, the front sealing portion 102 is an annular disk extending toward the pump shaft 13, the mechanical seal 15 has a flange abutting against a front end surface of the annular disk, and the mechanical seal 15 is fastened to the annular disk by fastening bolts 7 penetrating through the flange. The present embodiment provides reliable support for the bolt connection between the mechanical seal 15 and the front sealing portion 102 through the matching contact of the surface surfaces, and also increases the contact surface of the seal, and improves the sealing effect.
In some embodiments, referring to fig. 1 (a) and fig. 2, the front sealing portion 102 is provided with a thickened portion protruding backward along the axial direction of the fastening bolt 7, and the fastening bolt 7 does not penetrate through the thickened portion. The bolt connection part is thickened, so that the reliability of the bolt connection is improved, and the adverse effect of bolt penetration on sealing is avoided.
In some embodiments, referring to fig. 1 (a) and fig. 2, a front sealing ring 8 is further disposed between the front end surface of the front sealing portion 102 and the flange of the mechanical seal 15. The effect of sealing the mechanical seal 15 against the oil chamber 10 is improved by the provision of the front seal ring 8.
In some embodiments, referring to fig. 1 (a) and fig. 2, a front annular groove for limiting the front sealing ring 8 is disposed on the front end surface of the front sealing portion 102 and located inside the front end surface. A front annular groove is provided on the front end surface of the front seal portion 102, so that the reliability of the installation of the front seal ring 8 is improved.
In some embodiments, referring to fig. 1 (a) and fig. 2, the rear end of the mechanical seal 15 extends between the rear seal portion 103 and the pump shaft 13, and the rear seal ring 9 is disposed between the inner side surface of the rear seal portion 103 and the outer circumferential surface of the mechanical seal 15. Through the setting of preceding sealing washer 8 and back sealing washer 9, improve the sealed effect of mechanical seal 15 to grease chamber 10, avoid revealing.
In some embodiments, referring to fig. 1 (a) and fig. 2, the outer circumferential surface of the mechanical seal 15 is provided with a rear annular groove for positioning the rear seal ring 9, so as to improve the reliability of the arrangement of the rear seal ring 9.
Referring to fig. 1 (a) and 2, the shaft seal structure of the spiral submersible slurry pump further includes a shaft sleeve 14, which is sleeved on the pump shaft 13, and a mechanical seal 15 is sealingly assembled on the shaft sleeve 14. Through the shaft sleeve 14, the direct contact between the mechanical seal 15 and the pump shaft 13 is avoided, the pump shaft 13 is protected, the shaft sleeve 14 is used as a quick-wear part, the replacement is simple, and the replacement cost is low.
In some embodiments, referring to fig. 1 (a) and fig. 2, an inner seal ring 16 is disposed between the mechanical seal 15 and the shaft sleeve 14, and an inner positioning groove for positioning the inner seal ring 16 is disposed on an inner circumferential surface of the mechanical seal 15.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Based on the same inventive concept, the embodiment of the application also provides a submersible slurry pump, which refers to fig. 1 and comprises a submersible explosion-proof motor 12, a shaft seal sealing structure of the spiral submersible slurry pump and a pump assembly, wherein the rear end of an oil chamber 10 of the shaft seal sealing structure of the spiral submersible slurry pump is connected to a motor shell of the submersible explosion-proof motor 12, and the pump assembly is connected to the front end of the oil chamber 10.
Specifically, referring to fig. 1, the pump assembly includes a volute 1, an impeller 2, a front guard plate 5, a front pressure plate 4, and a rear guard plate 3, and the rear guard plate 3 is connected to an oil chamber 10 by a bolt. The front end of the pump assembly is a screen 6.
According to the submersible slurry pump provided by the embodiment of the utility model, the mechanical seal connected with the oil chamber bolt is adopted, so that the labor intensity is greatly reduced, the labor time is saved, the time for replacing equipment and maintaining is shortened, and the working efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a shaft seal structure of spiral dive sediment stuff pump which characterized in that includes:
a pump shaft (13);
the oil chamber (10) is assembled on the pump shaft (13), and a rear sealing part (103) and a front sealing part (102) are arranged in the oil chamber (10); and
and the rear end of the mechanical seal (15) and the rear seal part (103) form a rear end seal for the oil chamber (10), the front end of the mechanical seal is fastened on the front end surface of the front seal part (102) through a fastening bolt (7), and the fastening bolt (7) does not penetrate through the front seal part (102) to form a front end seal for the oil chamber (10).
2. The shaft seal sealing structure of the spiral submersible slurry pump according to claim 1, wherein the front sealing portion (102) is an annular disk extending in a direction of the pump shaft (13), the mechanical seal (15) has a flange abutting against a front end surface of the annular disk, and the mechanical seal (15) is fastened to the annular disk by a fastening bolt (7) penetrating through the flange.
3. The shaft seal sealing structure of a screw submersible slurry pump according to claim 2, characterized in that the front seal portion (102) is provided with a thickened portion protruding rearward in the axial direction of the fastening bolt (7), and the fastening bolt (7) does not penetrate through the thickened portion.
4. The shaft seal sealing structure of the spiral submersible slurry pump according to claim 2, characterized in that a front sealing ring (8) is provided between the front end surface of the front sealing part (102) and the flange of the mechanical seal (15).
5. The shaft seal sealing structure of the spiral submersible slurry pump according to claim 4, characterized in that a front annular groove for limiting the front sealing ring (8) is arranged on the front end surface of the front sealing part (102) and positioned on the inner side of the front end surface.
6. The shaft seal sealing structure of the spiral submersible slurry pump according to claim 1, wherein the rear end of the mechanical seal (15) extends between the rear sealing portion (103) and the pump shaft (13), and a rear seal ring (9) is provided between the inner side surface of the rear sealing portion (103) and the outer circumferential surface of the mechanical seal (15).
7. The shaft seal sealing structure of the spiral submersible slurry pump according to claim 6, wherein a rear annular groove for positioning the rear seal ring (9) is provided on the outer circumferential surface of the mechanical seal (15).
8. The shaft seal sealing structure of the spiral submersible slurry pump according to any one of claims 1 to 7, further comprising a shaft sleeve (14) sleeved on the pump shaft (13), wherein the mechanical seal (15) is hermetically assembled on the shaft sleeve (14).
9. The shaft seal sealing structure of the spiral submersible slurry pump according to claim 8, characterized in that an inner sealing ring (16) is provided between the mechanical seal (15) and the shaft sleeve (14), and an inner positioning groove for positioning the inner sealing ring (16) is provided on an inner circumferential surface of the mechanical seal (15).
10. The spiral submersible slurry pump is characterized by comprising a submersible explosion-proof motor (12), the shaft seal sealing structure of the spiral submersible slurry pump as claimed in any one of claims 1 to 9 and a pump assembly, wherein the rear end of an oil chamber (10) of the shaft seal sealing structure of the spiral submersible slurry pump is connected to a motor shell of the submersible explosion-proof motor (12), and the pump assembly is connected to the front end of the oil chamber (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220419639.3U CN216788781U (en) | 2022-02-28 | 2022-02-28 | Shaft seal sealing structure of spiral submersible slurry pump and spiral submersible slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220419639.3U CN216788781U (en) | 2022-02-28 | 2022-02-28 | Shaft seal sealing structure of spiral submersible slurry pump and spiral submersible slurry pump |
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| Publication Number | Publication Date |
|---|---|
| CN216788781U true CN216788781U (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220419639.3U Active CN216788781U (en) | 2022-02-28 | 2022-02-28 | Shaft seal sealing structure of spiral submersible slurry pump and spiral submersible slurry pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216788781U (en) |
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2022
- 2022-02-28 CN CN202220419639.3U patent/CN216788781U/en active Active
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