CN219841030U - Mechanical seal special for power plant boiler feed pump - Google Patents
Mechanical seal special for power plant boiler feed pump Download PDFInfo
- Publication number
- CN219841030U CN219841030U CN202223100240.8U CN202223100240U CN219841030U CN 219841030 U CN219841030 U CN 219841030U CN 202223100240 U CN202223100240 U CN 202223100240U CN 219841030 U CN219841030 U CN 219841030U
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- arc
- water pump
- side wall
- outer side
- mechanical seal
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims 3
- 230000009471 action Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Mechanical Sealing (AREA)
Abstract
The utility model relates to the technical field of mechanical seals, in particular to a mechanical seal special for a water supply pump of a power plant boiler; the utility model discloses a special mechanical seal for a boiler feed pump of a power plant, which comprises a water pump transmission shaft, wherein the outer side wall of the water pump transmission shaft is provided with a clamping mechanism and a rotating mechanism, the clamping mechanism comprises an arc-shaped plate, the outer side wall of the arc-shaped plate is provided with a mounting groove, springs are uniformly arranged in the mounting groove, the outer side wall of each spring is provided with an arc-shaped rubber pad, the arc-shaped rubber pads are positioned in the mounting groove, the rotating mechanism is positioned on the outer side wall of the arc-shaped plate and is matched with the arc-shaped plate, when a bidirectional screw rod rotates, an indication arrow is driven to rotate, and meanwhile, the rotating number of turns or angles of the bidirectional screw rod can be recorded by matching with a scale ring, so that the other group of bidirectional screw rods can be rotated by the same number of turns or angles to ensure that the rotating angles of the two groups of bidirectional screw rods are the same, and therefore, the two ends of the arc-shaped plate are fixed with the water pump transmission shaft with the same force.
Description
Technical Field
The utility model relates to the technical field of mechanical seals, in particular to a mechanical seal special for a water supply pump of a power plant boiler.
Background
The chinese patent with the bulletin number of CN217683204U discloses a special mechanical seal for a water supply pump of a power plant boiler, which comprises a mechanical seal body, the top welding of the mechanical seal body has a first hinge, and installs the head rod at the back of the inside of the first hinge, be connected with the bolt between head rod and the first hinge, and the externally mounted of bolt has a nut, the bottom welding of the mechanical seal body has a second hinge, and the back swing joint of second hinge has a second connecting rod, be connected with the spring between head rod and the mechanical seal body. According to the utility model, the first connecting rod extrudes the supporting plate and the adjusting screw rod towards the inner side under the action of the elasticity of the spring, the connecting pipe is limited by the arc-shaped rubber block at the tail end of the adjusting screw rod, at the moment, the spring and the arc-shaped rubber block can play a role in buffering the connecting pipe and the mechanical seal body, so that the connecting pipe and the mechanical seal body are prevented from relatively shaking radially at a larger distance, and the connecting strength is higher;
the prior art solutions described above have the following drawbacks: the connecting pipe is fixed through two independent arc rubber pads, and because the two arc rubber pads are independently movable, when the position of the arc rubber pad is adjusted, the clamping force of the two arc rubber pads to the connecting pipe cannot be guaranteed to be similar, when the connecting pipe receives the asymmetric clamping force of the two arc rubber pads, the connecting pipe can deviate, so that the technical innovation is carried out on the basis of the special mechanical seal of the water supply pump of the boiler of the power plant against the significance of the existence of the device.
Disclosure of Invention
The utility model aims to provide a mechanical seal special for a water supply pump of a power plant boiler, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a special mechanical seal of boiler feed pump of power plant, includes the water pump transmission shaft, the lateral wall of water pump transmission shaft is provided with fixture and slewing mechanism, fixture includes the arc, the mounting groove has been seted up to the arc lateral wall, evenly be provided with the spring in the mounting groove, the lateral wall of spring is provided with the arc rubber pad, the arc rubber pad is located the mounting groove, slewing mechanism is located the lateral wall of arc and cooperatees with the arc.
Preferably, the rotating mechanism comprises a bidirectional screw rod, two groups of threaded holes are uniformly formed in the outer side wall of the arc-shaped plate, the bidirectional screw rod is in threaded connection with the threaded holes, and two groups of arc-shaped plates are uniformly in threaded connection with the outer side wall of the bidirectional screw rod.
Preferably, the two groups of arc rubber pads are respectively positioned at the upper side and the lower side of the water pump transmission shaft and are attached to the water pump transmission shaft, and the two groups of bidirectional screw rods are respectively positioned at the front side and the rear side of the water pump transmission shaft.
Preferably, the outer side wall of the water pump transmission shaft is provided with a mechanical seal body, and the right side of the mechanical seal body is uniformly provided with a first support sleeve and a second support sleeve.
Preferably, the second support sleeve is arranged in the middle of the outer side wall of the bidirectional screw rod, and the two groups of first support sleeves are uniformly arranged on the outer side wall of the bidirectional screw rod.
Preferably, the bottom of the bidirectional screw rod is provided with an inner hexagonal hole and an indication arrow, the bottom of the first supporting sleeve is provided with a scale ring, and the indication arrow corresponds to the scale ring.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model relates to a special mechanical seal of boiler feed pump of power plant drives the instruction arrow when two-way lead screw rotates and rotates, and the number of turns or the angle that the two-way lead screw rotated can be recorded to the cooperation scale ring simultaneously to rotate the same number of turns or the angle alright guarantee two sets of two-way lead screw rotation angles the same with another set of two-way lead screw, thereby make the arc both ends fix the water pump transmission shaft with the same dynamics, so as to solve the water pump transmission shaft and because of receiving two sets of clamping forces different and lead to its own problem of taking place skew;
through with in built-in and the arc of spring, effectively avoided making its impaired problem easily because of the spring is external, effectively increased the life of spring, supplementary arc rubber pad through the mounting groove is stable to be removed simultaneously, has guaranteed arc rubber pad self stability when absorbing vibrations, improves the reliability in use of device.
Drawings
FIG. 1 is a schematic structural view of a mechanical seal special for a power plant boiler feed pump;
FIG. 2 is a bottom view of a mechanical seal dedicated to a power plant boiler feedwater pump of the present utility model;
FIG. 3 is an enlarged view of the portion A of FIG. 2 showing a mechanical seal dedicated to a feed pump of a power plant boiler;
fig. 4 is a right side cross-sectional view of a mechanical seal special for a power plant boiler feed pump.
In the figure: 1. a mechanical seal body; 2. a water pump transmission shaft; 3. a first support sleeve; 4. a second support sleeve; 5. a two-way screw rod; 6. an arc-shaped plate; 7. a spring; 8. an arc-shaped rubber pad; 9. an inner hexagonal hole; 91. a scale ring; 92. the arrow is indicated.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 2-4, a mechanical seal special for a water feeding pump of a power plant boiler comprises a water pump transmission shaft 2, a clamping mechanism is slidably arranged on the outer side wall of the water pump transmission shaft 2, a rotating mechanism is rotatably arranged on the outer side wall of the water pump transmission shaft 2, the clamping mechanism comprises an arc-shaped plate 6, a mounting groove is formed on the outer side wall of the arc-shaped plate 6, a spring 7 is uniformly and fixedly arranged in the mounting groove, an arc-shaped rubber pad 8 is fixedly arranged on the outer side wall of the spring 7, the arc-shaped rubber pad 8 is positioned in the mounting groove, when the water pump transmission shaft 2 vibrates during working, the vibration generated by the arc-shaped rubber pad 8 and the spring 7 is absorbed, so that the relative radial vibration of a larger distance between the water pump transmission shaft 2 and the mechanical seal body 1 is avoided, the connection strength of the two is improved, the rotating mechanism is positioned on the outer side wall of the arc-shaped plate 6 and matched with the arc-shaped plate 6, the rotating mechanism comprises a bidirectional screw 5, two groups of threaded holes are uniformly formed in the outer side wall of the arc plate 6, a bidirectional screw rod 5 is in threaded connection with the threaded holes, two groups of arc plates 6 are uniformly in threaded connection with the outer side wall of the bidirectional screw rod 5, the bidirectional screw rod 5 is rotated to drive the two groups of arc plates 6 to move, the arc rubber pads 8 are driven by the arc plates 6 to be attached to the water pump transmission shaft 2, the two groups of arc rubber pads 8 are respectively positioned on the upper side and the lower side of the water pump transmission shaft 2 and attached to the water pump transmission shaft 2, the two groups of bidirectional screw rods 5 are respectively positioned on the front side and the rear side of the water pump transmission shaft 2, the outer side wall of the water pump transmission shaft 2 is rotationally provided with a mechanical seal body 1, the right side of the mechanical seal body 1 is uniformly and fixedly provided with a first support sleeve 3 and a second support sleeve 4, the second support sleeve 4 is rotationally arranged in the middle of the outer side wall of the bidirectional screw rod 5, the two groups of first support sleeves 3 are uniformly rotationally arranged on the outer side wall of the bidirectional screw rod 5, the bidirectional screw rod 5 is supported to rotate through the first supporting sleeve 3 and the second supporting sleeve 4, the inner hexagonal hole 9 and the indicating arrow 92 are formed in the bottom of the bidirectional screw rod 5, the hexagonal wrench is inserted into the inner hexagonal hole 9 to rotate the bidirectional screw rod 5, the scale ring 91 is formed in the bottom of the first supporting sleeve 3, the indicating arrow 92 corresponds to the scale ring 91, the indicating arrow 92 is driven to rotate when the bidirectional screw rod 5 rotates, the number of turns or angles of the rotation of the bidirectional screw rod 5 can be recorded by matching with the scale ring 91, the same number of turns or angles of the rotation of the other group of bidirectional screw rods 5 can be guaranteed, the rotation angles of the two groups of bidirectional screw rods 5 are the same, and therefore the two ends of the arc plate 6 fix the water pump transmission shaft 2 with the same force.
Working principle: the hexagonal wrench is inserted into the inner hexagonal hole 9 to rotate the bidirectional screw rod 5, the bidirectional screw rod 5 is supported to rotate through the first supporting sleeve 3 and the second supporting sleeve 4, the bidirectional screw rod 5 is rotated to drive the two groups of arc plates 6 to move, the arc-shaped rubber pad 8 is driven to be attached to the water pump transmission shaft 2 through the arc-shaped plate 6, when the water pump transmission shaft 2 vibrates during working, the arc-shaped rubber pad 8 and the spring 7 absorb the generated vibration, so that the water pump transmission shaft 2 and the mechanical seal body 1 are prevented from relatively shaking in a larger distance, the connection strength of the two opposite directions is improved, the indication arrow 92 is driven to rotate when the bidirectional screw rod 5 rotates, the circle number or the angle of the rotation of the bidirectional screw rod 5 can be recorded through the matching of the scale ring 91, the two groups of bidirectional screw rods 5 can be guaranteed to have the same rotation angle through the arc-shaped rubber pad 8, and the two ends of the arc plates 6 are enabled to fix the water pump transmission shaft 2 with the same force.
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.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a special mechanical seal of boiler feed pump of power plant, includes water pump transmission shaft (2), its characterized in that: the water pump transmission shaft (2) is characterized in that a clamping mechanism and a rotating mechanism are arranged on the outer side wall of the water pump transmission shaft (2), the clamping mechanism comprises an arc-shaped plate (6), an installation groove is formed in the outer side wall of the arc-shaped plate (6), springs (7) are uniformly arranged in the installation groove, arc-shaped rubber pads (8) are arranged on the outer side wall of the springs (7), the arc-shaped rubber pads (8) are located in the installation groove, and the rotating mechanism is located on the outer side wall of the arc-shaped plate (6) and is matched with the arc-shaped plate (6).
2. The mechanical seal special for a power plant boiler feed water pump of claim 1, characterized in that: the rotating mechanism comprises a bidirectional screw rod (5), two groups of threaded holes are uniformly formed in the outer side wall of the arc-shaped plate (6), the bidirectional screw rod (5) is in threaded connection with the threaded holes, and two groups of arc-shaped plates (6) are uniformly in threaded connection with the outer side wall of the bidirectional screw rod (5).
3. The mechanical seal special for a power plant boiler feed water pump of claim 2, characterized in that: two groups of arc rubber pads (8) are respectively positioned on the upper side and the lower side of the water pump transmission shaft (2) and are attached to the water pump transmission shaft (2), and two groups of bidirectional screw rods (5) are respectively positioned on the front side and the rear side of the water pump transmission shaft (2).
4. A mechanical seal dedicated to a power plant boiler feedwater pump of claim 3, wherein: the water pump transmission shaft is characterized in that a mechanical seal body (1) is arranged on the outer side wall of the water pump transmission shaft (2), and a first supporting sleeve (3) and a second supporting sleeve (4) are uniformly arranged on the right side of the mechanical seal body (1).
5. The mechanical seal special for a power plant boiler feed water pump of claim 4, wherein: the second support sleeve (4) is arranged in the middle of the outer side wall of the bidirectional screw rod (5), and the two groups of first support sleeves (3) are uniformly arranged on the outer side wall of the bidirectional screw rod (5).
6. The mechanical seal special for a power plant boiler feed water pump of claim 5, characterized in that: the bottom of the bidirectional screw rod (5) is provided with an inner hexagonal hole (9) and an indication arrow (92), the bottom of the first support sleeve (3) is provided with a scale ring (91), and the indication arrow (92) corresponds to the scale ring (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223100240.8U CN219841030U (en) | 2022-11-22 | 2022-11-22 | Mechanical seal special for power plant boiler feed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223100240.8U CN219841030U (en) | 2022-11-22 | 2022-11-22 | Mechanical seal special for power plant boiler feed pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219841030U true CN219841030U (en) | 2023-10-17 |
Family
ID=88306386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223100240.8U Active CN219841030U (en) | 2022-11-22 | 2022-11-22 | Mechanical seal special for power plant boiler feed pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219841030U (en) |
-
2022
- 2022-11-22 CN CN202223100240.8U patent/CN219841030U/en active Active
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