CN111472979A - Double-shell cantilever type oil slurry pump with independent inner shell - Google Patents
Double-shell cantilever type oil slurry pump with independent inner shell Download PDFInfo
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- CN111472979A CN111472979A CN202010277515.1A CN202010277515A CN111472979A CN 111472979 A CN111472979 A CN 111472979A CN 202010277515 A CN202010277515 A CN 202010277515A CN 111472979 A CN111472979 A CN 111472979A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
- F04D29/044—Arrangements for joining or assembling shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A double-shell cantilever type slurry pump with an independent inner shell relates to a slurry pump, wherein an inner pump body (3) and an inner pump cover (9) inside the cantilever type slurry pump form an independent inner shell; the inner pump body (3) is fixed in the outer pump shell by using bolt columns, and the joint is sealed by using a winding pad (2); the rotor part comprises an impeller (4), a pump shaft (12) and an impeller nut (14); the bearing body part (13) consists of a set of cylindrical roller bearing (18), two sets of radial thrust ball bearings (17), a gland and an isolator, and a stud connected with the bearing body part (13) and the mechanical seal (11) is screwed on the pump cover (10) and combined together to support the rotor part; one end of the pump shaft (12) is provided with a thrust ball bearing (17), and the thrust ball bearing (17) is arranged in the bearing body part (13). The invention can prevent the leakage of low-temperature or high-temperature, neutral or corrosive liquid and medium containing solid particles, prolong the service life and solve the problem of serious abrasion of parts in the pump.
Description
Technical Field
The invention relates to an oil slurry pump, in particular to a double-shell cantilever type oil slurry pump with an independent inner shell.
Background
In the existing catalytic cracking device of the strut in the oil refining industry, an oil slurry pump is very important as a conveying device, for example, a catalytic cracking processing technology is to produce a light oil product through a series of chemical reactions under the conditions of certain temperature and pressure by using a heavy part in petroleum under the action of a catalyst, and because the catalyst participating in the reactions is easy to cause the abrasion of the equipment, how to improve the abrasion resistance of the equipment, especially how to prolong the service life of the oil slurry pump in an oil slurry system is the primary problem which needs to be solved urgently by the oil refining industry at present. To solve this problem, it is necessary to develop a new double-casing cantilever type oil slurry pump using independent inner casings.
Disclosure of Invention
The invention aims to provide a double-shell cantilever type oil slurry pump with an independent inner shell.
The purpose of the invention is realized by the following technical scheme:
a double-shell cantilever type slurry pump with an independent inner shell comprises a pump body, an inner pump body, an impeller, a discharge short pipe, an inner pump cover, a mechanical seal, a pump shaft, a bearing body part, an impeller nut, a seal winding gasket, a suction bush, a radial thrust ball bearing and a cylindrical roller bearing; the pump and the prime motor are connected by an elastic diaphragm type coupling, and the pump and the prime motor are connected by an independent inner shell body consisting of an inner pump body and an inner pump cover which are arranged inside; the inner pump body is fixed in the outer pump shell by bolt columns, and the joint is sealed by a winding pad; the rotor part comprises an impeller, a pump shaft and an impeller nut; the bearing body part consists of a set of cylindrical roller bearing, two sets of radial thrust ball bearings, a gland and an isolator, and the pump cover is screwed with the coaxial bearing body part and a stud connected with a mechanical seal and is combined together to support the rotor part; one end of the pump shaft is provided with a thrust ball bearing, the thrust ball bearing is assembled in the bearing body component, the middle part of the pump shaft is also provided with a cylindrical roller bearing, and a mechanical seal is assembled at the position of the pump shaft close to the cylindrical roller bearing; the end face of the ring of the bearing body part is connected to the pump cover through a bolt, the center of the upper end face of the other end face of the pump cover is connected with an inner pump cover, the end face of the outer edge of the pump cover is connected with a pump body, and a suction lining and a gasket are respectively arranged in the pump body; the suction lining is internally provided with an inner pump body and an impeller.
The double-shell cantilever type oil slurry pump with the independent inner shell is characterized in that the impeller and the pump shaft are installed together through the impeller nut to form a rotor component.
The pump body and the pump cover are combined together through the stud, the nut and the gasket, and the middle part is sealed and wound with the gasket to seal the joint surface to form the outer shell.
The double-shell cantilever type oil slurry pump with the independent inner shell is characterized in that the inner pump body and the inner pump cover are combined together through a screw and a gasket, and the middle part is sealed by a winding gasket to seal a joint surface to form the independent inner shell.
The double-shell cantilever type slurry pump with the independent inner shell is characterized in that the radial thrust ball bearing and the cylindrical roller bearing are installed in a bearing body part and are assembled with a pump shaft through a stud, a nut and a gasket and installed on a pump cover.
The double-shell cantilever type oil slurry pump with the independent inner shell is characterized in that a pump suction inlet is in the axial horizontal direction, and a discharge outlet is in the vertical upward direction.
The double-shell cantilever type slurry pump with the independent inner shell is characterized in that the pump cover is fastened to the pump body through the studs and the nuts, and the joint between the pump cover and the pump body is sealed through the winding pad.
According to the double-shell cantilever type slurry pump with the independent inner shell, a convex-concave positioning table is arranged between the inner pump body and the outer shell at the outlet of the pump, a gasket, a flexible graphite belt and a short discharge pipe are sequentially arranged on the positioning table, and the inner pump body and the outer shell are firmly fastened.
The invention has the advantages and effects that:
the invention can run uninterruptedly for a long period and prolong the service life, and the independent inner shell body which is composed of the pump body arranged inside and the inner pump cover prevents the leakage of low-temperature or high-temperature, neutral or corrosive liquid and medium containing solid particles, prolongs the service life and solves the phenomenon of serious abrasion of parts inside the pump. The oil slurry pump is mainly used for conveying low-temperature or high-temperature, neutral or corrosive liquid and medium containing solid particles.
Has the following advantages:
1. safety feature
The independent inner shell body formed by the pump body and the inner pump cover arranged in the pump body plays a role in preventing low-temperature or high-temperature, neutral or corrosive liquid and medium containing solid particles from leaking to cause fire. The requirement of long-term use under harsher erosion conditions is completely met without influencing the integrity of the outer side pressure shell.
2. Economy of use
Because the erosion of catalyst particles in the oil slurry of the catalytic cracking device is serious, the double-shell cantilever type oil slurry pump with the independent inner shell can prolong the running time, reduce the loss of spare parts, reduce the maintenance workload, greatly prolong the service life of the pump, enable the long-period production and reduce the pump stopping times.
Drawings
FIG. 1 is a schematic view of the overall structure of the oil slurry pump of the present invention;
fig. 2 is a partially enlarged view of fig. 1.
The components in the figure: the pump body 1, a winding pad 2, an inner pump body 3, an impeller 4, a flexible graphite belt 5, a gasket 6, a short discharge pipe 7, a sealing winding pad 8, an inner pump cover 9, a pump cover 10, a mechanical seal 11, a pump shaft 12, a bearing body component 13, an impeller nut 14, a sealing winding gasket 15, a suction bush 16, a thrust ball bearing 17 and a cylindrical roller bearing 18.
Detailed Description
The present invention will be described in detail with reference to the embodiments shown in the drawings.
As shown in figure 1, the double-shell cantilever type slurry pump with the independent inner shell comprises a pump body 1, an inner pump body 3, an impeller 4, a short discharge pipe 7, an inner pump cover 9, a pump cover 10, a mechanical seal 11, a pump shaft 12, a bearing body part 13, an impeller nut 14, a suction bush 16, a radial thrust ball bearing 17 and a cylindrical roller bearing 18. One end of the pump shaft 12 is provided with a thrust ball bearing 17, the thrust ball bearing 17 is assembled in the bearing body component 13, the middle part of the pump shaft 12 is also provided with a cylindrical roller bearing 18, and the pump shaft 12 close to the cylindrical roller bearing 18 is provided with a mechanical seal 11; the ring end surface of the bearing body component 13 is connected to the pump cover 10 through a bolt, the center of the other end surface of the pump cover 10 is connected with an inner pump cover 9, the outer edge end surface of the pump cover 10 is connected with a pump body 1, and a suction bush 16 and a gasket 6 are respectively arranged in the pump body 1; the inner pump body 3 and the impeller 4 are arranged in the suction bush 16;
the impeller 4 is mounted with the pump shaft 12 by an impeller nut 14 to form a rotor part.
The pump body 1 and the pump cover 10 are combined together through a stud, a nut and a gasket, and the middle part is sealed by a sealing and winding gasket 15 to seal the combined surface. To form an outer shell.
The inner pump body 3 and the inner pump cover 9 are combined together through screws and gaskets, and the middle part is sealed by a sealing winding pad 8 to seal the combined surface. Forming an independent inner shell.
The radial thrust ball bearing 17 and the cylindrical roller bearing 18 are installed in the bearing body part 13, assembled with the pump shaft 12 and installed on the pump cover 10 through a stud, a nut and a gasket, and play a role in supporting the rotor parts.
The outer shell bears all the working pressure of the pump by the pump body 1 and the pump cover 10. The pump shell has enough wall thickness and good assembly performance, so that the outer pump shell can bear enough high thermal stress, medium pressure and pipeline load, and reliable operation at high temperature is ensured. The pump inlet is axially horizontal, and the outlet is vertically upward. The pump cover 10 is fastened to the pump body 1 by a stud and a nut, and the joint between the pump cover 10 and the pump body 1 is sealed by a wrapping gasket 15. A convex-concave positioning table is arranged between the inner pump body 3 and the outer shell at the outlet of the pump, and a gasket 6, a flexible graphite belt 5 and a short discharge pipe 7 are sequentially arranged on the positioning table, so that the inner pump body 3 and the outer shell are firmly fastened.
The independent inner housing is composed of an inner pump body 3, an inner pump cover 9, a suction bush 16 and the like. The inner pump body 3 is cast by high-chromium and high-hardness stainless steel, is fixed in the outer pump shell by using bolt columns, and the joint is sealed by using a winding pad 2. The inner pump body 3 can be replaced independently, and the outer pump body 1 can ensure that the medium does not leak even if the inner pump body 3 is worn and leaked, thereby providing the maximum safety.
The rotor part consists of an impeller 4, a pump shaft 12, an impeller nut 14 and the like. The axial force generated by the front cover plate and the rear cover plate of the impeller 4 is mainly balanced by a balance hole on the impeller, and the residual axial force is born by the radial ball bearing 17. The impeller 4 has the following characteristics in design: the independent inner pump body 3 is cast by the same material, the overflowing part of the blade is thickened, the inlet area is larger, and the cavitation performance is good.
The bearing body part 13 consists of a set of cylindrical roller bearings 18 and two sets of radial thrust ball bearings 17, a gland and an isolator.
The pump cover 10 is screwed with a stud connected with the bearing member 13 and the mechanical seal 11, and the stud and the bearing member are combined together to support the rotor member.
The pump and the prime motor are connected by adopting an elastic diaphragm type coupling, so that the offset or unbalance generated in the installation or use process can be better absorbed.
The inner pump body 3 and the inner pump cover 9 which are arranged inside the inner pump body form an independent inner shell, so that the inner pump body can resist the erosion corrosion of a medium with high solid content, and the requirement of long-term use under a harsher erosion condition is completely met.
Claims (8)
1. The double-shell cantilever type slurry oil pump with the independent inner shell is characterized by comprising a pump body (1), a winding pad (2), an inner pump body (3), an impeller (4), a discharge short pipe (7), an inner pump cover (9), a pump cover (10), a mechanical seal (11), a pump shaft (12), a bearing body component (13), an impeller nut (14), a seal winding gasket (15), a suction bush (16), a radial thrust ball bearing (17) and a cylindrical roller bearing (18); the pump and the prime motor are connected by adopting an elastic diaphragm type coupling, and an inner pump body (3) and an inner pump cover (9) which are arranged inside form an independent inner shell; the inner pump body (3) is fixed in the outer pump shell by using bolt columns, and the joint is sealed by using a winding pad (2); the rotor part comprises an impeller (4), a pump shaft (12) and an impeller nut (14); the bearing body part (13) consists of a set of cylindrical roller bearing (18), two sets of radial thrust ball bearings (17), a gland and an isolator, and a stud connected with the bearing body part (13) and the mechanical seal (11) is screwed on the pump cover (10) and combined together to support the rotor part; one end of the pump shaft (12) is provided with a thrust ball bearing (17), the thrust ball bearing (17) is arranged in a bearing body part (13), the middle part of the pump shaft (12) is also provided with a cylindrical roller bearing (18), and a mechanical seal (11) is arranged at the position of the pump shaft (12) close to the cylindrical roller bearing (18); the ring end face of the bearing body part (13) is connected to the pump cover (10) through a bolt, the center of the other end face of the pump cover (10) is connected with an inner pump cover (9), the outer edge end face of the pump cover (10) is connected with the pump body (1), and a suction bush (16) and a gasket (6) are respectively arranged in the pump body (1); the suction bush (16) is internally provided with an inner pump body (3) and an impeller (4).
2. A self-contained inner housing dual casing cantilevered slurry pump according to claim 1 wherein said impeller (4) is mounted with the pump shaft (12) by an impeller nut (14) to form a rotor assembly.
3. The double-shell cantilever type slurry pump with an independent inner shell according to claim 1, characterized in that the pump body (1) and the pump cover (10) are combined together through a stud, a nut and a gasket, and the combined surface is sealed by a sealing and winding gasket (15) to form an outer shell.
4. The double-casing cantilever type slurry pump of the independent inner casing according to claim 1, wherein the inner pump body (3) and the inner pump cover (9) are combined together through screws and gaskets, and the combined surface is sealed by a sealing winding pad (8) in the middle to form the independent inner casing.
5. The double-casing cantilever type slurry pump of an independent inner casing according to claim 1, wherein the radial thrust ball bearing (17) and the cylindrical roller bearing (18) are installed in the bearing body part (13) and assembled with the pump shaft (12) and installed on the pump cover (10) through a stud, a nut and a gasket.
6. The dual housing cantilevered slurry pump of claim 1 wherein the pump suction inlet is axially horizontal and the discharge outlet is vertically upward.
7. The dual casing cantilevered slurry pump of an independent inner casing according to claim 1, characterized in that the pump cover (10) is fastened to the pump body (1) with studs and nuts, and the joint between the pump cover (10) and the pump body (1) is sealed with a gasket wrap (15).
8. The double-shell cantilever type slurry pump of the independent inner shell according to claim 1, wherein a convex-concave positioning table is arranged between the inner pump body (3) and the outer shell at the outlet of the pump, and the positioning table is sequentially provided with a gasket (6), a flexible graphite strip (5) and a short discharge pipe (7) so as to firmly fasten the inner pump body (3) and the outer shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010277515.1A CN111472979A (en) | 2020-04-10 | 2020-04-10 | Double-shell cantilever type oil slurry pump with independent inner shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010277515.1A CN111472979A (en) | 2020-04-10 | 2020-04-10 | Double-shell cantilever type oil slurry pump with independent inner shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111472979A true CN111472979A (en) | 2020-07-31 |
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ID=71751688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010277515.1A Pending CN111472979A (en) | 2020-04-10 | 2020-04-10 | Double-shell cantilever type oil slurry pump with independent inner shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111472979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123974A (en) * | 2021-05-24 | 2021-07-16 | 浙江理工大学 | Double-shell high-speed solid-liquid mixed transportation pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2394037Y (en) * | 1999-11-10 | 2000-08-30 | 沈阳化工泵制造厂 | Dual shell oil slurry pump |
| CN2752504Y (en) * | 2004-08-03 | 2006-01-18 | 黄福成 | Double-casing oil slurry pump |
| CN2779125Y (en) * | 2005-03-14 | 2006-05-10 | 上海通用泵机设备有限公司第一水泵厂 | Centrifugal coal slurry pump with medium for filtering high impurity |
| CN203743007U (en) * | 2014-01-28 | 2014-07-30 | 浙江科尔泵业股份有限公司 | Abrasion-resistant large-displacement slurry oil pump |
| CN206495784U (en) * | 2016-12-29 | 2017-09-15 | 镇江福泰克流体技术有限公司 | A kind of single stage single suction cantilever type centrifugal pump |
| CN209100286U (en) * | 2018-11-05 | 2019-07-12 | 安徽迈宁工业泵有限公司 | A kind of novel barrel insertpump |
| CN110094338A (en) * | 2018-01-31 | 2019-08-06 | 林佳一 | Diffuser fit sealing formula heat radiating type oil-slurry pump |
-
2020
- 2020-04-10 CN CN202010277515.1A patent/CN111472979A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2394037Y (en) * | 1999-11-10 | 2000-08-30 | 沈阳化工泵制造厂 | Dual shell oil slurry pump |
| CN2752504Y (en) * | 2004-08-03 | 2006-01-18 | 黄福成 | Double-casing oil slurry pump |
| CN2779125Y (en) * | 2005-03-14 | 2006-05-10 | 上海通用泵机设备有限公司第一水泵厂 | Centrifugal coal slurry pump with medium for filtering high impurity |
| CN203743007U (en) * | 2014-01-28 | 2014-07-30 | 浙江科尔泵业股份有限公司 | Abrasion-resistant large-displacement slurry oil pump |
| CN206495784U (en) * | 2016-12-29 | 2017-09-15 | 镇江福泰克流体技术有限公司 | A kind of single stage single suction cantilever type centrifugal pump |
| CN110094338A (en) * | 2018-01-31 | 2019-08-06 | 林佳一 | Diffuser fit sealing formula heat radiating type oil-slurry pump |
| CN209100286U (en) * | 2018-11-05 | 2019-07-12 | 安徽迈宁工业泵有限公司 | A kind of novel barrel insertpump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123974A (en) * | 2021-05-24 | 2021-07-16 | 浙江理工大学 | Double-shell high-speed solid-liquid mixed transportation pump |
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Application publication date: 20200731 |
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