CN213711414U - Shaft end sealing device of slurry pump - Google Patents
Shaft end sealing device of slurry pump Download PDFInfo
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- CN213711414U CN213711414U CN202022719973.4U CN202022719973U CN213711414U CN 213711414 U CN213711414 U CN 213711414U CN 202022719973 U CN202022719973 U CN 202022719973U CN 213711414 U CN213711414 U CN 213711414U
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Abstract
The utility model discloses a shaft end sealing device of a slurry pump, which comprises an annular shaft sleeve 3, wherein the annular shaft sleeve 3 is arranged at the shaft end of a pump shaft 2 penetrating out of a slurry pump stuffing box 1, the inner side surfaces of two ends of the annular shaft sleeve 3, which are 4mm away from the port, are respectively provided with an annular sealing groove 4, the width and the depth of the annular sealing groove 4 are both 5mm, and a sealing ring is arranged in the annular sealing groove 4; and a shaft sleeve gland 5 is arranged outside the annular shaft sleeve 3 on the shaft end of the pump shaft 2, and the edge of the shaft sleeve gland 5 is fixed on the side surface of the stuffing box 1 through a circle of bolt 6 and tightly presses the annular shaft sleeve 3. Through the field installation test, sealing performance is better, can reach the effect of not leaking the material basically, and does not appear any friction phenomenon of generating heat in the operation process, has reached design, operation requirement effect. Meanwhile, the transformation investment cost is low, the requirement on the use working condition of the pump is low, the annular shaft sleeves can be processed in batch according to the basic size of the same type of pumps, the universality is good, and the use condition of the annular shaft sleeves can be completely met on site.
Description
Technical Field
The utility model relates to a sediment stuff pump packing technical field specifically is a novel sediment stuff pump axle head sealing device.
Background
At present, all rotary discharging pumps used for conveying various medium materials in a main workshop in a coal mine enterprise are ZJ series slurry pumps produced by Shijiazhuang industrial pump factories, the shaft end seal is designed to be a secondary impeller and a packing mode for sealing, and the packing is made of butter boiled asbestos packing. In the use, because sediment stuff pump operating pressure is great, the negative pressure that the auxiliary impeller formed by the restriction of gland packing diameter is lower, leads to the material to get into the axle head, and the asbestos packing forms fatlute owing to its self leakproofness is relatively poor with the material mixture of grease in the use, causes wearing and tearing to packing cover and gland packing, has not satisfied the sealed requirement that drips and not form the line. By frequently replacing the packing, the sealing effect of one shift can be kept, and the material leakage phenomenon occurs. If packing cover and stuffing box wearing and tearing, also can not play better sealed effect through changing the packing, can only change corresponding packing cover through the overhaul water pump. According to statistics, the period of wear of the packing sleeve is about three months on average, the packing sleeve needs to be replaced, the normal use and maintenance period of the water pump is two years, and the labor intensity of workers is increased due to frequent replacement. Meanwhile, due to frequent leakage of the packing, leaked materials are blocked due to the fact that a discharge hole of a material receiving groove below the packing is too small, leaked coal media enter a bearing box along with a bearing body, lubricating oil is polluted, a shaft is damaged, the bearing of the slurry pump is locked by serious people, and the clean production and the economic benefit are greatly influenced.
Disclosure of Invention
The utility model discloses a solve the sealed effect of current sediment stuff pump axle head poor, cause pollution and bearing damage to bearing body lubricating oil easily because of running the phenomenon of falling the water clock, provide a sediment stuff pump axle head sealing device.
The utility model discloses an adopt following technical scheme to realize:
the shaft end sealing device of the slurry pump comprises an annular shaft sleeve, wherein the annular shaft sleeve is arranged at the shaft end of a pump shaft penetrating out of a slurry pump stuffing box, annular sealing grooves are respectively formed in the inner side surfaces, 4mm away from a port, of two ends of the annular shaft sleeve, the width and the depth of each annular sealing groove are both 5mm, and a sealing ring is arranged in each annular sealing groove; and a shaft sleeve gland is arranged outside the annular shaft sleeve on the shaft end of the pump shaft, and the edge of the shaft sleeve gland is fixed on the side surface of the stuffing box through a circle of bolt and tightly presses the annular shaft sleeve.
The utility model discloses use wear-resisting nylon axle sleeve + auxiliary impeller mode to replace original packing + auxiliary impeller mode and seal. An annular shaft sleeve is processed by using a wear-resistant nylon material, a sealing ring is matched, and a packing is replaced by accurate tolerance matching processing for sealing.
During implementation, an annular shaft sleeve is processed by using a wear-resistant nylon material, the positions 4mm away from the two ends of the inner ring of the annular shaft sleeve are provided with sealing grooves of 5mm, and sealing rings with proper specifications are arranged in the sealing grooves. Through the precise tolerance fit during the processing of the annular shaft sleeve, the tolerance fit between the annular shaft sleeve and the pump shaft is controlled to be +/-0.1 mm, and the small gap is matched with the negative pressure of the auxiliary impeller simultaneously, so that the function of sealing materials can be met.
When the pump is installed, the processed annular shaft sleeve with the built-in sealing ring with the proper specification is sleeved at the end part of the pump shaft and is pressed tightly through the shaft sleeve pressing cover.
Through the field installation test, sealing performance is better, can reach the effect of not leaking the material basically, and does not appear any friction phenomenon of generating heat in the operation process, has reached design, operation requirement effect. Meanwhile, the transformation investment cost is low, the requirement on the use working condition of the pump is low, the annular shaft sleeves can be processed in batch according to the basic size of the same type of pumps, the universality is good, and the use condition of the annular shaft sleeves can be completely met on site.
Drawings
Fig. 1 shows a schematic cross-sectional view of an annular bushing.
Fig. 2 shows a schematic structural diagram of the present invention.
In the figure: the pump comprises 1-a slurry pump stuffing box, 2-a pump shaft, 3-an annular shaft sleeve, 4-an annular sealing groove, 5-a shaft sleeve gland and 6-a bolt.
Detailed Description
The following describes in detail specific embodiments of the present invention with reference to the accompanying drawings.
A shaft end sealing device of a slurry pump is shown in figure 2 and comprises an annular shaft sleeve 3, wherein the annular shaft sleeve 3 is arranged at the shaft end of a pump shaft 2 penetrating out of a stuffing box 1 of the slurry pump. As shown in fig. 1, annular seal grooves 4 are respectively formed in inner side surfaces of two ends of the annular shaft sleeve 3, which are 4mm away from the port, the width and the depth of each annular seal groove 4 (the section of each annular seal groove is square) are both 5mm, and a seal ring is installed in each annular seal groove 4; and a shaft sleeve gland 5 is arranged outside the annular shaft sleeve 3 on the shaft end of the pump shaft 2, and the edge of the shaft sleeve gland 5 is fixed on the side surface of the stuffing box 1 through a circle of bolt 6 and tightly presses the annular shaft sleeve 3.
Through a plurality of tests, the parameter size of the annular shaft sleeve is designed and determined, the length of the annular shaft sleeve 3 is 110mm, a circle of annular sealing groove 4 is respectively designed on the inner walls of two ends of the annular shaft sleeve 3, the distance between the annular sealing groove 4 and a port is 4mm, the cross section of the annular sealing groove 4 is designed to be square, and the width and the depth of the square are both 5 mm.
In specific implementation, the wear-resistant nylon shaft sleeve and the auxiliary impeller are used for sealing. By on-site inspection, in the running process of the water pump, the shaft and the shaft sleeve are in large fit and are in clearance fit, so that the shaft sleeve is basically in a static state. Based on the consideration, the existing sealing mode of the slurry pump is optimized and improved: an annular shaft sleeve and a shaft sleeve gland are processed by wear-resistant nylon materials, a sealing groove with the width of 5mm is formed in the position 4mm away from the two ends of the inner ring of the annular shaft sleeve, and a sealing ring with a proper specification is arranged in the sealing groove. Through the accurate tolerance fit during the annular shaft sleeve processing, the tolerance fit between the annular shaft sleeve and the shaft is controlled to be +/-0.1 mm, the sealing ring is arranged in a small gap, and the negative pressure of the auxiliary impeller is matched at the same time, so that the function of sealing materials can be met.
When the pump is installed, the processed annular shaft sleeve with the built-in sealing ring with the proper specification is sleeved on the pump shaft end and is pressed tightly through the shaft sleeve pressing cover.
Through the field installation test, sealing performance is better, can reach the effect of not leaking the material basically, and does not appear any friction phenomenon of generating heat in the operation process, has reached design, operation requirement effect. Meanwhile, the transformation investment cost is low, the requirement on the use working condition of the pump is low, the annular shaft sleeves can be processed in batch according to the basic size of the same type of pumps, the universality is good, and the use condition of the annular shaft sleeves can be completely met on site.
The scope of the invention is not limited to the above embodiments, and various modifications and changes may be made by those skilled in the art, and any modifications, improvements and equivalents made within the spirit and principle of the invention are intended to be included within the scope of the invention.
Claims (3)
1. The utility model provides a sediment stuff pump axle head sealing device which characterized in that: the pump shaft sealing structure comprises an annular shaft sleeve (3), wherein the annular shaft sleeve (3) is arranged at the shaft end of a pump shaft (2) penetrating out of a slurry pump stuffing box (1), annular sealing grooves (4) are respectively formed in the inner side surfaces, 4mm away from the port, of the two ends of the annular shaft sleeve (3), the width and the depth of each annular sealing groove (4) are both 5mm, and a sealing ring is arranged in each annular sealing groove (4); the pump shaft is characterized in that a shaft sleeve gland (5) is arranged outside the annular shaft sleeve (3) on the shaft end of the pump shaft (2), and the edge of the shaft sleeve gland (5) is fixed on the side face of the stuffing box (1) through a circle of bolt (6) and compresses the annular shaft sleeve (3).
2. The shaft end sealing device of the slurry pump as claimed in claim 1, wherein: the annular shaft sleeve (3) is made of a nylon material.
3. The shaft end sealing device of the slurry pump as claimed in claim 1, wherein: the length of the annular shaft sleeve (3) is 110 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022719973.4U CN213711414U (en) | 2020-11-23 | 2020-11-23 | Shaft end sealing device of slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022719973.4U CN213711414U (en) | 2020-11-23 | 2020-11-23 | Shaft end sealing device of slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213711414U true CN213711414U (en) | 2021-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022719973.4U Active CN213711414U (en) | 2020-11-23 | 2020-11-23 | Shaft end sealing device of slurry pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN213711414U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113663398A (en) * | 2021-10-21 | 2021-11-19 | 苏州韩博环境科技有限公司 | Separation auxiliary part for dynamic filtering equipment and installation method |
-
2020
- 2020-11-23 CN CN202022719973.4U patent/CN213711414U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113663398A (en) * | 2021-10-21 | 2021-11-19 | 苏州韩博环境科技有限公司 | Separation auxiliary part for dynamic filtering equipment and installation method |
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