CN213117474U - Sealing structure for pump - Google Patents
Sealing structure for pump Download PDFInfo
- Publication number
- CN213117474U CN213117474U CN202021963279.0U CN202021963279U CN213117474U CN 213117474 U CN213117474 U CN 213117474U CN 202021963279 U CN202021963279 U CN 202021963279U CN 213117474 U CN213117474 U CN 213117474U
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- seal groove
- rotating shaft
- floating
- pump
- hole
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a seal structure for pump, including casing, seal groove, clamp plate, floating restrictor ring, one side of casing is equipped with the seal groove, the tank bottom of seal groove is equipped with the pivot opening, the internal diameter of pivot opening is greater than the diameter of pivot, be equipped with the floating restrictor ring with pivot clearance fit in the seal groove, the both ends of floating restrictor ring closely laminate with the tank bottom and the clamp plate of seal groove respectively, the external diameter of floating restrictor ring is less than the internal diameter of seal groove. The structure has the advantages of effectively reducing the leakage of liquid, improving the efficiency of the pump, reducing the pressure drop of the liquid and improving the maintenance and repair period of the pump.
Description
Technical Field
The utility model relates to a seal structure field especially relates to a seal structure for pump.
Background
During operation of the pump, due to the high and low pressure areas created by the rotation of the pump rotor, a certain amount of clearance must be left between the rotating parts and the stationary parts in order to prevent friction and to allow reliable operation of the pump, which results in a certain amount of leakage of liquid and a drop in pressure, and as the pump operates longer, the clearance increases with increasing wear and the leakage and the drop in pressure are faster.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a seal structure for pump has the effectual leakage that reduces liquid and improves the efficiency of pump and the pressure drop that reduces liquid to improve the advantage of the maintenance and repair cycle of pump.
The technical scheme of the utility model is that:
the utility model provides a seal structure for pump, including casing, seal groove, clamp plate, floating choke ring, one side of casing is equipped with the seal groove, the tank bottom of seal groove is equipped with the pivot opening, the internal diameter of pivot opening is greater than the diameter of pivot, be equipped with the floating choke ring with pivot clearance fit in the seal groove, the both ends of floating choke ring closely laminate with the tank bottom and the clamp plate of seal groove respectively, the external diameter of floating choke ring is less than the internal diameter of seal groove.
The working principle of the scheme is as follows:
the floating type throttling ring is adopted in the sealing structure, the gap between the rotating part and the throttling ring can be made very small, meanwhile, because the throttling ring is floating, the rotating part inevitably generates jumping in the rotating process, at the moment, the throttling ring moves along with the jumping of the rotor part, meanwhile, the throttling ring is made of non-metal materials, the abrasion between the throttling ring and the rotating part is very small, and the possibility that the further abrasion of the gap between the throttling ring and the rotating part is increased is also very small.
In a further technical scheme, the difference between the inner diameter of the sealing groove and the outer diameter of the floating throttling ring is larger than the maximum jumping value of the rotating shaft at the position.
The situation of jumping inevitably occurs in the rotating process of the rotating shaft, and the difference value between the inner diameter of the sealing groove and the outer diameter of the floating throttling ring is larger than the maximum jumping value of the rotating shaft at the position, so that the floating throttling ring can be prevented from touching the inner wall of the sealing groove to damage the structure.
In a further technical scheme, a rotating shaft through hole is formed in the pressing plate, the inner diameter of the rotating shaft through hole is equal to that of the rotating shaft through hole, and the central axis where the rotating shaft through hole is located coincides with the central axis where the rotating shaft through hole is located.
The specification parameters of the rotating shaft through hole and the rotating shaft through hole on the pressing plate are unified and are larger than the maximum jumping value of the rotating shaft at the position, so that the pressing plate and the inner wall of the rotating shaft through hole are not damaged by too large jumping amplitude of the rotating shaft.
In a further technical scheme, the floating throttling ring is made of a non-metal material.
Compared with a metal material, the non-metal material has stronger corrosion and wear resistance, and is less in abrasion relative to the rotating shaft and the floating throttling ring, so that the sealing effect can be effectively ensured for a long time.
The utility model has the advantages that:
1. the pump has the advantages of effectively reducing liquid leakage, improving the efficiency of the pump, reducing the pressure drop of the liquid and improving the maintenance and repair period of the pump.
2. The difference value between the inner diameter of the sealing groove and the outer diameter of the floating throttling ring is larger than the maximum jumping value of the rotating shaft at the position, so that the floating throttling ring can be prevented from touching the inner wall of the sealing groove to damage the structure.
3. The specification parameters of the rotating shaft through hole and the rotating shaft through hole on the pressing plate are unified and are larger than the maximum jumping value of the rotating shaft at the position, so that the pressing plate and the inner wall of the rotating shaft through hole are not damaged by too large jumping amplitude of the rotating shaft.
4. Compared with a metal material, the non-metal material has stronger corrosion and wear resistance, and is less in abrasion relative to the rotating shaft and the floating throttling ring, so that the sealing effect can be effectively ensured for a long time.
Drawings
Fig. 1 is a schematic view of a sealing structure for a pump according to an embodiment of the present invention.
Description of reference numerals:
1. a housing; 2. pressing a plate; 3. a rotating shaft; 4. a sealing groove; 5. a floating restrictor ring.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
Example (b):
as shown in fig. 1, a seal structure for pump, including casing 1, seal groove 4, clamp plate 2, floating throttle ring 5, one side of casing 1 is equipped with seal groove 4, the tank bottom of seal groove 4 is equipped with the pivot opening, the internal diameter of pivot opening is greater than the diameter of pivot, be equipped with in the seal groove 4 with the floating throttle ring 5 of pivot clearance fit, the both ends of floating throttle ring 5 closely laminate with the tank bottom of seal groove 4 and clamp plate 2 respectively, the external diameter of floating throttle ring 5 is less than the internal diameter of seal groove 4.
The working principle of the technical scheme is as follows:
the floating type throttling ring 5 is adopted in the sealing structure, the gap between the rotating part and the throttling ring can be made to be very small, meanwhile, because the throttling ring is floating, the rotating part inevitably generates jumping conditions in the rotating process, at the moment, the throttling ring moves along with the jumping of the rotor part, meanwhile, the throttling ring is made of non-metal materials, the abrasion between the throttling ring and the rotating part is very small, and the possibility that the further abrasion of the gap between the throttling ring and the rotating part is increased is also very small.
In another embodiment, the difference between the inner diameter of the sealing groove 4 and the outer diameter of the floating restriction ring 5, and the difference between the inner diameter of the shaft opening and the diameter of the shaft are both greater than the maximum run-out of the shaft at that location.
The condition of beating can inevitable appear in the rotation in-process of pivot 3, the difference between the internal diameter of seal groove 4 and the external diameter of floating throttle ring 5, and the difference between the internal diameter of pivot opening and the diameter of pivot all is greater than the maximum value of beating of pivot 3 in this department, can avoid damaging pivot 3, the inner wall of pivot opening, the inner wall of seal groove and floating throttle ring when pivot 3 beats.
In another embodiment, the pressing plate 2 is provided with a rotating shaft through hole, the inner diameter of the rotating shaft through hole is equal to the inner diameter of the rotating shaft through hole, and the central axis of the rotating shaft through hole coincides with the central axis of the rotating shaft through hole.
The specification parameters of the rotating shaft through hole and the rotating shaft through hole on the unified pressing plate 2 can enable the pressing plate 2 and the inner wall of the rotating shaft through hole not to be damaged by too large jumping amplitude of the rotating shaft.
In another embodiment, the floating throttle ring 5 is a non-metallic material.
Compared with a metal material, the non-metal material has stronger corrosion and wear resistance, and is less in abrasion relative to the rotating shaft 3 and the floating throttling ring 5, so that the sealing effect can be effectively ensured for a long time.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (4)
1. The utility model provides a seal structure for pump, its characterized in that, includes casing, seal groove, clamp plate, floating restrictor ring, one side of casing is equipped with the seal groove, the tank bottom of seal groove is equipped with the pivot opening, the internal diameter of pivot opening is greater than the diameter of pivot, be equipped with in the seal groove with pivot clearance fit's floating restrictor ring, the both ends of floating restrictor ring closely laminate with the tank bottom and the clamp plate of seal groove respectively, the external diameter of floating restrictor ring is less than the internal diameter of seal groove.
2. A seal structure for a pump according to claim 1, wherein the difference between the inner diameter of said seal groove and the outer diameter of the floating restrictor ring is greater than the maximum run-out of the shaft at that location.
3. The seal structure for the pump according to claim 1, wherein the pressure plate is provided with a rotating shaft through hole, an inner diameter of the rotating shaft through hole is equal to an inner diameter of the rotating shaft through hole, and a central axis of the rotating shaft through hole coincides with a central axis of the rotating shaft through hole.
4. A seal for a pump according to any one of claims 1 to 3, wherein the floating restriction ring is of a non-metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021963279.0U CN213117474U (en) | 2020-09-09 | 2020-09-09 | Sealing structure for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021963279.0U CN213117474U (en) | 2020-09-09 | 2020-09-09 | Sealing structure for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213117474U true CN213117474U (en) | 2021-05-04 |
Family
ID=75661126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021963279.0U Active CN213117474U (en) | 2020-09-09 | 2020-09-09 | Sealing structure for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213117474U (en) |
-
2020
- 2020-09-09 CN CN202021963279.0U patent/CN213117474U/en active Active
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