CN221195412U - End suction centrifugal pump structure convenient to overhaul - Google Patents
End suction centrifugal pump structure convenient to overhaul Download PDFInfo
- Publication number
- CN221195412U CN221195412U CN202323317943.0U CN202323317943U CN221195412U CN 221195412 U CN221195412 U CN 221195412U CN 202323317943 U CN202323317943 U CN 202323317943U CN 221195412 U CN221195412 U CN 221195412U
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- cover plate
- sealing ring
- motor
- overhaul
- volute body
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- 238000007789 sealing Methods 0.000 claims abstract description 37
- 230000000712 assembly Effects 0.000 claims description 18
- 238000000429 assembly Methods 0.000 claims description 18
- 238000001746 injection moulding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000758 substrate Substances 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses an end suction centrifugal pump structure convenient to overhaul, and relates to the technical field of hydraulic machinery. The utility model comprises a motor, wherein the front end of the motor is provided with a connecting part, the motor is detachably connected with an intermediate substrate through the connecting part, the front end of the intermediate substrate is detachably connected with a rear cover plate, the front end of the rear cover plate is detachably connected with a volute body, the front end of the volute body is detachably connected with a front cover plate, a sealing ring is arranged between the volute body and the front cover plate, the output end of the motor is fixedly provided with an impeller, and a mechanical seal is arranged between the impeller and the intermediate substrate. The utility model divides the originally designed volute body into two parts, namely a front cover plate and a volute body; this can be achieved by: when the leakage of the sealing ring is too large, the sealing ring can be replaced by only disassembling the inlet pipeline and the front cover plate, and when the sealing ring blank is assembled and then is processed for the second time, the front cover plate can be processed by a lathe; therefore, the disassembly and assembly workload of water pump overhaul is greatly reduced.
Description
Technical Field
The utility model belongs to the technical field of hydraulic machinery, and particularly relates to an end suction centrifugal pump structure convenient to overhaul.
Background
The end suction pump is used as a marking product in the water pump industry, and has the characteristics of large flow range and wide lift range; the application is very wide, and the water supply and drainage industries such as electric power, construction, mines, cities and the like are all involved; has very important position in the China waterpower industry.
At present, the end suction pump in most domestic industries has older structural design and is mainly characterized in that:
1. The installation mode of the machine seal is still from outside to inside, so that when the machine seal is in a problem, the water pump motor and the connecting matrix are removed, and the removal amount is very large;
2. The centrifugal volute body and the suction cover plate are integrally designed, so that if the sealing ring and the water pump impeller of the water pump are required to be replaced, the whole motor, the inlet and outlet pipelines and the like are required to be removed, then the sealing ring is removed, a new blank is arranged, and the whole volute body is machined on a lathe again; therefore, the disassembly amount of the water pump is large, and the processing difficulty is also high;
the situation can be judged, and the current overhaul procedure of the old end suction centrifugal pump is complicated and is extremely unfavorable for overhaul.
Disclosure of utility model
The utility model aims to provide an end suction centrifugal pump structure convenient to overhaul, which greatly reduces the workload of water pump overhaul by utilizing a volute split structure and a built-in machine seal mode.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
The utility model relates to an end suction centrifugal pump structure convenient to overhaul, which comprises a motor, wherein the front end of the motor is provided with a connecting part, the motor is detachably connected with a middle base body through the connecting part, the front end of the middle base body is detachably connected with a rear cover plate, the front end of the rear cover plate is detachably connected with a volute body, the front end of the volute body is detachably connected with a front cover plate, a sealing ring is arranged between the volute body and the front cover plate, the output end of the motor is fixedly provided with an impeller, a mechanical seal is arranged between the impeller and the middle base body, the mechanical seal can seal the impeller and an output shaft of the motor, the stability and the safety of the connection of the impeller are ensured, and the whole pump body structure adopts a multi-section detachable structure, so that convenience can be provided for later maintenance and replacement.
Further, the rear end of the middle base body and the connecting part are provided with first connecting holes, first bolt assemblies are connected in the first connecting holes, and the middle base body and the connecting part are detachably connected through the first bolt assemblies, so that the middle base body and the motor can be conveniently detached.
Further, the front end of the middle matrix and the rear end of the volute body are both provided with second connecting holes, second bolt assemblies are connected in the second connecting holes, and the middle matrix and the volute body are detachably connected through the second bolt assemblies, so that the volute body and the middle matrix are convenient to replace.
Further, the front end of the volute body and the rear end of the front cover plate are provided with third connecting holes, third bolt assemblies are connected in the third connecting holes, and the volute body and the front cover plate are detachably connected through the third bolt assemblies, so that the front cover plate and the volute body can be replaced conveniently.
Further, the sealing ring is formed by rubber material injection molding, the sealing ring comprises an outer ring and an inner ring, the rear ends of the outer ring and the inner ring are connected into a whole, the front ends of the outer ring and the inner ring form a V-shaped connecting groove, the outer wall of the outer ring is inclined to form a stress surface, the rear end of the sealing ring is installed towards one side of the impeller, the sealing ring can improve the sealing effect between the volute body and the front cover plate, and further the sealing ring can be received by the stress surface when being subjected to external force, so that the sealing ring is extruded to be further attached to the front cover plate to form a good sealing effect.
The utility model has the following beneficial effects:
1. Setting a step of a rear cover plate of the pump in the driving end direction, changing the mechanical seal form into extrusion mounting from inside to outside, wherein extrusion force is provided by the end face of the impeller; the purpose is that: when the machine seal is problematic, the machine seal can be directly replaced by only removing the inlet and outlet pipes and then removing the volute and the impeller from the suction end, and the motor is not required to be disassembled, so that the mounting position of the unit is not changed;
2. Dividing the originally designed volute body into two parts, namely a front cover plate and a volute body; this can be achieved by: when the leakage of the sealing ring is too large, the sealing ring can be replaced by only disassembling the inlet pipeline and the front cover plate, and when the sealing ring blank is assembled and then is processed for the second time, the front cover plate can be processed by a lathe; therefore, the disassembly and assembly workload of water pump overhaul is greatly reduced, and the secondary processing of the sealing ring is also facilitated, so that the characteristics of convenient overhaul and simple processing of the pump body are greatly improved.
Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.
FIG. 1 is a block diagram of a conventional end suction centrifugal pump of the prior art;
FIG. 2 is a schematic diagram of the overall structure of the present utility model;
FIG. 3 is a schematic structural view of a seal ring according to the present utility model.
1. A volute casing; 2. a back cover plate; 3. an impeller; 4. mechanical sealing; 5. a seal ring; 51. an outer ring; 52. an inner ring; 53. a V-shaped connecting groove; 54. a force-bearing surface; 6. a motor; 7. an intermediate substrate; 8. and a front cover plate.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus consistent with some aspects of the disclosure as detailed in the accompanying claims.
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. 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. 1, 2 and 3, the utility model discloses an end suction centrifugal pump structure convenient to overhaul, which comprises a motor 6, wherein the front end of the motor 6 is provided with a connecting part, the motor 6 is detachably connected with a middle base body 7 through the connecting part, the front end of the middle base body 7 is detachably connected with a rear cover plate 2, the front end of the rear cover plate 2 is detachably connected with a volute body 1, the front end of the volute body 1 is detachably connected with a front cover plate 8, a sealing ring 5 is arranged between the volute body 1 and the front cover plate 8, an impeller 3 is fixedly arranged at the output end of the motor 6, a mechanical seal 4 is arranged between the impeller 3 and the middle base body 7, the mechanical seal 4 can seal the output shafts of the impeller 3 and the motor 6, the stability and the safety of the connection of the impeller 3 are ensured, and the whole pump body structure adopts a multi-section detachable structure, so that convenience can be provided for later maintenance and replacement.
As shown in fig. 2 and 3, the rear end of the middle base 7 and the connecting portion are provided with first connecting holes, the first connecting holes are connected with first bolt assemblies, the middle base 7 and the connecting portion are detachably connected through the first bolt assemblies, so that the middle base 7 and the motor 6 are conveniently detached, the front end of the middle base 7 and the rear end of the volute body 1 are provided with second connecting holes, the second connecting holes are internally connected with second bolt assemblies, the middle base 7 and the volute body 1 are detachably connected through the second bolt assemblies, so that the volute body 1 and the middle base 7 are conveniently replaced, the front end of the volute body 1 and the rear end of the front cover plate 8 are provided with third connecting holes, the third bolt assemblies are connected in the third connecting holes, and the volute body 1 and the front cover plate 8 are detachably connected through the third bolt assemblies, so that the front cover plate 8 and the volute body 1 are conveniently replaced.
As shown in fig. 2 and 3, the sealing ring 5 is formed by injection molding of rubber materials, the sealing ring 5 comprises an outer ring 51 and an inner ring 52, the rear ends of the outer ring 51 and the inner ring 52 are connected into a whole, the front ends form a V-shaped connecting groove 53, the outer wall of the outer ring 51 is inclined to form a stress surface 54, the rear end of the sealing ring 5 is installed towards one side of the impeller 3, the sealing ring 5 can improve the sealing effect between the volute 1 and the front cover plate 8, and further the sealing ring 5 can be received by the stress surface 54 when being subjected to external force, so that the sealing ring 5 is extruded to be further attached to the front cover plate 8 to form a good sealing effect.
Specifically, this end of convenient to overhaul inhales centrifugal pump structure when during operation/during use: 1. setting the step of the rear cover plate 2 of the pump in the driving end direction, changing the form of the mechanical seal 4 into extrusion mounting from inside to outside, and providing extrusion force by the end face of the impeller 3; the machine seal 4 can be directly replaced after the volute 1 and the impeller 3 are removed from the suction end by only removing the inlet and outlet pipes when the machine seal has a problem, and the motor 6 and the middle matrix 7 are not required to be disassembled, so that the mounting position of the machine set is ensured not to be changed; the originally designed volute body is divided into two parts, namely a front cover plate 8 and a volute body 1; therefore, when the leakage of the sealing ring 5 is too large, the sealing ring 5 can be replaced by only disassembling the inlet pipeline and the front cover plate 8, and when the sealing ring blank is assembled and then is subjected to secondary machining, the front cover plate 8 can be machined only; therefore, the disassembly and assembly workload of water pump overhaul is greatly reduced, and the secondary processing of the sealing ring is facilitated.
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.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.
Claims (5)
1. An end suction centrifugal pump structure convenient to overhaul, its characterized in that: including motor (6), the front end of motor (6) has a connecting portion, motor (6) can be dismantled through connecting portion and be connected with intermediate base member (7), the front end of intermediate base member (7) can be dismantled and be connected with back shroud (2), the front end of back shroud (2) can be dismantled and be connected with spiral case body (1), the front end of spiral case body (1) can be dismantled and be connected with front shroud (8), be provided with a sealing ring (5) between spiral case body (1) and front shroud (8), the output fixed mounting of motor (6) has impeller (3), be provided with mechanical seal (4) between impeller (3) and intermediate base member (7).
2. The end suction centrifugal pump structure convenient to overhaul according to claim 1, wherein the rear end of the middle base body (7) and the connecting part are provided with first connecting holes, first bolt assemblies are connected in the first connecting holes, and the middle base body (7) and the connecting part are detachably connected through the first bolt assemblies.
3. The end suction centrifugal pump structure convenient to overhaul according to claim 1, wherein the front end of the middle base body (7) and the rear end of the volute body (1) are provided with second connecting holes, second bolt assemblies are connected in the second connecting holes, and the middle base body (7) is detachably connected with the volute body (1) through the second bolt assemblies.
4. The end suction centrifugal pump structure convenient to overhaul according to claim 1, wherein third connecting holes are formed in the front end of the volute body (1) and the rear end of the front cover plate (8), third bolt assemblies are connected in the third connecting holes, and the volute body (1) is detachably connected with the front cover plate (8) through the third bolt assemblies.
5. The end suction centrifugal pump structure convenient to overhaul according to claim 1, wherein the sealing ring (5) is formed by injection molding of rubber materials, the sealing ring (5) comprises an outer ring (51) and an inner ring (52), the rear ends of the outer ring (51) and the inner ring (52) are connected into a whole, the front ends of the outer ring and the inner ring form a V-shaped connecting groove (53), the outer wall of the outer ring (51) is inclined to form a stress surface (54), and the rear end of the sealing ring (5) is installed towards one side of the impeller (3).
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221195412U true CN221195412U (en) | 2024-06-21 |
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| GR01 | Patent grant |