CN210531242U - Locking device of multistage centrifugal pump balance disc - Google Patents
Locking device of multistage centrifugal pump balance disc Download PDFInfo
- Publication number
- CN210531242U CN210531242U CN201921218382.XU CN201921218382U CN210531242U CN 210531242 U CN210531242 U CN 210531242U CN 201921218382 U CN201921218382 U CN 201921218382U CN 210531242 U CN210531242 U CN 210531242U
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- China
- Prior art keywords
- balance disc
- balance
- screw
- centrifugal pump
- locking device
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Abstract
The utility model discloses a locking device of a multistage centrifugal pump balance disc, which comprises a main shaft, wherein a mechanical seal shaft sleeve is arranged on the left ring surface of the main shaft, one of the second screw grooves is inserted with a second inner hexagon screw, and the second inner hexagon screw is connected with the balance disc through one of the second screw holes, the utility model relates to the technical field of centrifugal pumps, the locking device of the multistage centrifugal pump balance disc aims at the locking problem of the multistage centrifugal pump balance disc, provides a locking device of the multistage centrifugal pump balance disc, ensures the respective size of each relevant part during processing, and respectively separates the adjustment of the clearance between the balance disc and the balance sleeve and the adjustment of the mechanical seal pressure during assembly, greatly improves the assembly progress, and has a greater advantage that the condition of 'false volume' in the axial direction caused by the blocking of part of parts when the pull shaft is axially strung, the safe operation coefficient of the pump is improved.
Description
Technical Field
The utility model relates to a centrifugal pump technical field specifically is a locking device of multistage centrifugal pump balance disc.
Background
Energy conservation and emission reduction become the primary content of the Chinese economic development planning outline at present, and relate to each industry, the water pump industry is no exception, and efficiency is improved, materials are saved, energy consumption and engineering cost are reduced.
At present, the balance disc of the multistage centrifugal pump used in many industries is locked to a certain extent, namely the balance disc is locked by a nut of a mechanical seal shaft sleeve. Thus, the machining accuracy of the axial dimension of each relevant part is highly required, and the number of machining steps increases, thereby increasing the cost. And the clearance between the balance disc and the balance sleeve needs to be adjusted during assembly, and the pressure of the mechanical seal needs to be adjusted, so that the assembly is difficult to achieve. Especially, when the pump needs to be replaced after being used for a period of time, the pump needs to be disassembled and assembled on site by professional staff.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to prior art not enough, the utility model provides a locking device of multistage centrifugal pump balance disc has solved the difficult problem of current assembly.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a locking device of a balance disc of a multistage centrifugal pump comprises a main shaft, wherein a mechanical sealing shaft sleeve is installed on a left annular surface of the main shaft, a balance disc is installed on a right annular surface of the main shaft, a balance sleeve is installed outside the balance disc, a water outlet section is installed outside the balance sleeve, a pair of first screw grooves with the same structure are formed in the upper side and the lower side of a left wall surface of the balance sleeve, a pair of first screw holes with the same structure are formed in the upper side and the lower side of a left wall surface of the water outlet section, a first inner hexagonal screw is inserted into one of the first screw grooves and connected with the water outlet section through one of the first screw holes, an O-shaped sealing ring is installed between the balance disc and the main shaft, a compression ring is installed at the left side of the O-shaped sealing ring, and a half-split clamping ring is installed outside the main shaft at the left side of the, the semi-divided clamping ring is externally provided with a clamping ring sleeve, a pair of second screw grooves with the same structure are formed in the upper side and the lower side of the left wall surface of the clamping ring sleeve, a pair of second screw holes with the same structure are formed in the upper side and the lower side of the left wall surface of the balance disc, a second inner hexagonal screw is inserted into one of the second screw grooves, and the second inner hexagonal screw is connected with the balance disc through one of the second screw holes.
Preferably, the main shaft comprises a rear shaft body, the rear shaft body is connected with the balance disc in an inserting mode, a front shaft body is installed at the left side of the rear shaft body, a notch groove is formed in the position, close to the left side, of the outer ring surface of the rear shaft body, and through grooves are formed in the outer ring surfaces of the front shaft body and the rear shaft body.
Preferably, the balance disc is provided with a third screw hole.
Preferably, a first annular groove is formed between the balance disc and the balance sleeve.
Preferably, a second annular groove is formed in the right side of the outer annular surface of the balance disc.
Preferably, one side of the snap ring sleeve is S-shaped in cross section.
Advantageous effects
The utility model provides a locking device of multistage centrifugal pump balancing disk. The method has the following beneficial effects: the locking device of the balance disc of the multistage centrifugal pump aims at the locking problem of the balance disc of the multistage centrifugal pump, the locking device of the balance disc of the multistage centrifugal pump is provided, the respective sizes of all relevant parts can be ensured during processing, the adjustment of the clearance between the balance disc and the balance sleeve and the adjustment of the mechanical sealing pressure are separated during assembly, the assembly progress is greatly improved, the labor force is saved, the labor cost is reduced, but also can increase the production progress, improve the production efficiency, ensure the market demand of production supply, meanwhile, the device has the greater advantage that when the device is pulled to move axially, the device can not be locked axially due to the fact that part of parts are clamped, so that the device can work more stably, avoid unnecessary trouble when using, improved the safe coefficient of operation of pump simultaneously, provide the guarantee for operator's the lives and property.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the main shaft structure of the present invention.
Fig. 3 is a schematic view of the structure of the balance plate of the present invention.
In the figure: 1. a main shaft; 101. a rear axle body; 102. a front axle body; 103. a notch groove; 104. a through groove; 2. a mechanical seal shaft sleeve; 3. a balance disc; 4. a balance sleeve; 5. a water outlet section; 6. a first socket head cap screw; 7. an O-shaped sealing ring; 8. a compression ring; 9. half-divided snap rings; 10. a snap ring sleeve; 11. a second socket head cap screw; 12. a first annular groove; 13. a second annular groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a locking device of a balance disc 3 of a multistage centrifugal pump comprises a main shaft 1, a mechanical sealing shaft sleeve 2 is installed on a left annular surface of the main shaft 1, the balance disc 3 is installed on a right annular surface of the main shaft 1, a balance sleeve 4 is installed outside the balance disc 3, a water outlet section 5 is installed outside the balance sleeve 4, a pair of first screw grooves with the same structure is arranged on the upper side and the lower side of a left wall surface of the balance sleeve 4, a pair of first screw holes with the same structure is arranged on the upper side and the lower side of a left wall surface of the water outlet section 5, a first inner hexagon screw 6 is inserted into one first screw groove, the first inner hexagon screw 6 is connected with the water outlet section 5 through one of the first screw holes, an O-shaped sealing ring 7 is installed between the balance disc 3 and the main shaft 1, and a compression ring 8 is installed at the left side of the O-shaped sealing ring 7 between the, a half-split snap ring 9 is arranged at the left side of the compression ring 8 and outside the main shaft 1, a snap ring sleeve 10 is arranged outside the half-split snap ring 9, a pair of second screw grooves with the same structure are arranged at the upper and lower sides of the left wall surface of the snap ring sleeve 10, a pair of second screw holes with the same structure are arranged at the upper and lower sides of the left wall surface of the balance disc 3, a second inner hexagon screw 11 is inserted into one of the second screw grooves, the second inner hexagon screw 11 is connected with the balance disc 3 through one of the second screw holes, the main shaft 1 comprises a rear shaft body 101, the rear shaft body 101 is connected with the balance disc 3 in an inserting manner, a front shaft body 102 is arranged at the left side of the rear shaft body 101, a notch groove 103 is arranged at the position close to the left side on the outer ring surface of the rear shaft body 101, through grooves 104 are respectively arranged on the outer ring surfaces of the front shaft body 102 and the rear shaft body 101, a first annular groove 12 is formed between the balance disc 3 and the balance sleeve 4, a second annular groove 13 is formed at the right side of the outer annular surface of the balance disc 3, and the cross section of one side of the clamping ring sleeve 10 is S-shaped.
The following working principles, detailed connecting means thereof, and the following main descriptions of the working principles and processes thereof are well known in the art, and will be referred to by those skilled in the art for the specific connection and operation sequence of the components in the present disclosure.
Example (b): firstly fix the internal hexagonal screw for the balance cover on a water section, adorn the balance plate again, pack into O type sealing washer, balance plate clamp ring in proper order, divide half snap ring, adjust the clearance between balance plate and the balance cover after with internal hexagonal screw tight snap ring cover and balance plate, the utility model discloses a bore the screw hole at balance plate non-working face, at epaxial car constant head tank etc.. The compression ring behind the balance disc is compressed by a half-divided snap ring arranged on the shaft, the half-divided snap ring is fixed well by a snap ring sleeve, and the snap ring sleeve and the balance disc are fixed by an inner hexagonal screw, so that the balance disc is locked. After the balance disc is locked, the accuracy of adjusting the gap between the balance disc and the balance sleeve can be ensured, and the necessary relation between the assembling pressure of the mechanical seal is avoided. The installation is very convenient, the installation accuracy is improved, the time is saved, the working efficiency is improved, and the cost is reduced.
In design, the sizes of the half-divided snap ring and the snap ring sleeve are calculated theoretically, and the requirement is met theoretically. And then, the parts are ensured to meet the actual requirements in the aspects of processing, mechanical properties and the like, and the practical operation proves that the safe operation is completely met. The installation is swift convenient. The working efficiency is improved, and the production cost is reduced.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The locking device of the balance disc of the multistage centrifugal pump comprises a main shaft (1) and is characterized in that a mechanical seal shaft sleeve (2) is installed on a left annular surface of the main shaft (1), the balance disc (3) is installed on a right annular surface of the main shaft (1), a balance sleeve (4) is installed outside the balance disc (3), a water outlet section (5) is installed outside the balance sleeve (4), a pair of first screw grooves with the same structure are formed in the upper side and the lower side of a left wall surface of the balance sleeve (4), a pair of first screw holes with the same structure are formed in the upper side and the lower side of a left wall surface of the water outlet section (5), a first inner hexagonal screw (6) is inserted into one first screw groove, the first inner hexagonal screw (6) is connected with the water outlet section (5) through one of the first screw holes, an O-shaped seal ring (7) is installed between the balance disc (3) and the main shaft (1), balance disc (3) with just be located between main shaft (1) O type sealing washer (7) left side department installs clamp ring (8), the left side department of clamp ring (8) just is located main shaft (1) is installed half snap ring (9) outward, half snap ring cover (10) are installed outward to half snap ring (9), the same second screw groove of a pair of structure has been seted up to both sides department about the left wall of snap ring cover (10), a pair of the same second screw of structure has been seted up to both sides department about the left wall of balance disc (3), one of them second screw inslot interpolation is equipped with second allen key screw (11), second allen key screw (11) are through one of them the second screw is connected with balance disc (3).
2. The locking device of the balance disc of the multistage centrifugal pump according to claim 1, wherein the main shaft (1) comprises a rear shaft body (101), the rear shaft body (101) is connected with the balance disc (3) in an inserting manner, a front shaft body (102) is installed at the left side of the rear shaft body (101), a notch groove (103) is formed in the outer annular surface of the rear shaft body (101) and is close to the left side, and through grooves (104) are formed in the outer annular surfaces of the front shaft body (102) and the rear shaft body (101).
3. The locking device of the balance disc of the multistage centrifugal pump according to claim 1, wherein the balance disc (3) is provided with a third screw hole.
4. The locking device of a multistage centrifugal pump balance disc according to claim 1, characterized in that a first annular groove (12) is provided between the balance disc (3) and the balance sleeve (4).
5. The locking device of the balance disc of the multistage centrifugal pump according to claim 1, wherein a second annular groove (13) is formed at the right side of the outer annular surface of the balance disc (3).
6. The locking device of a balance disk of a multistage centrifugal pump according to claim 1, wherein the collar (10) has an S-shaped cross-sectional shape on one side thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921218382.XU CN210531242U (en) | 2019-07-31 | 2019-07-31 | Locking device of multistage centrifugal pump balance disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921218382.XU CN210531242U (en) | 2019-07-31 | 2019-07-31 | Locking device of multistage centrifugal pump balance disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210531242U true CN210531242U (en) | 2020-05-15 |
Family
ID=70599803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921218382.XU Expired - Fee Related CN210531242U (en) | 2019-07-31 | 2019-07-31 | Locking device of multistage centrifugal pump balance disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210531242U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622989A (en) * | 2020-06-03 | 2020-09-04 | 安徽卧龙泵阀股份有限公司 | A locking mounting structure of pump shaft balance disc for chemical centrifugal pump |
-
2019
- 2019-07-31 CN CN201921218382.XU patent/CN210531242U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622989A (en) * | 2020-06-03 | 2020-09-04 | 安徽卧龙泵阀股份有限公司 | A locking mounting structure of pump shaft balance disc for chemical centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200515 Termination date: 20200731 |