CN213298294U - Waste acid concentration pump - Google Patents
Waste acid concentration pump Download PDFInfo
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- CN213298294U CN213298294U CN202021435500.5U CN202021435500U CN213298294U CN 213298294 U CN213298294 U CN 213298294U CN 202021435500 U CN202021435500 U CN 202021435500U CN 213298294 U CN213298294 U CN 213298294U
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Abstract
A spent acid concentrate pump, comprising: the middle part of the middle bracket is connected with a pump shaft, two ends of the pump shaft penetrate out of the middle bracket, and one end of the pump shaft is connected with the bearing box through a screw; the other end of the bearing box is connected with the bracket through a bolt; the pump cover is connected to the other end of the middle support; the auxiliary impeller is connected to the pump shaft and penetrates through the pump cover to be arranged on the front side of the pump cover; the shaft sleeve is connected to the step of the pump shaft, the small hole end of the stepped hole is connected with the auxiliary impeller, and the outer ring of the large hole end is sleeved with a mechanical seal; the sealing box is fastened on the front end face of the pump cover through screws, and a mechanical seal is arranged in the hole; the main impeller is connected to the pump shaft through an impeller nut; and the pump body is connected to the other end of the middle bracket. The utility model has the advantages of wide and uneasy blockage of the flow passage of the pump body, large cavitation allowance and convenient disassembly and maintenance; the conveying device has the advantages of stable operation, small vibration, low noise and long service life, and is suitable for conveying corrosive liquid containing suspended particles.
Description
Technical Field
The utility model relates to a pump technical field especially relates to an JFX type spent acid concentrated pump.
Background
In the process of industrially producing titanium dioxide, a large amount of waste acid is generated, the concentration of the waste acid is low, the waste acid can be utilized by concentration, if the waste acid is not treated and recycled, the environment is seriously polluted, and if the waste acid is recycled, the economic benefit and the social benefit are obvious. In the waste acid concentration and recovery process, the waste acid generally needs to be evaporated and concentrated for many times, and a strong corrosion resistant pump needs to be used for forced circulation. 130 million waste acid pumps with the flow rate of about 1000T are imported, while domestic metal pumps cannot serve the waste acid pumps, only Hastelloy pumps can be used reluctantly, but the prices are quite high, and the use and maintenance cost is only slightly lower than that of the imported pumps. At present, the overflowing part of the pump is made into a lining by adopting a corrosion-resistant material in domestic market, but the strength of a fluorine lining layer is not high than that of a metal piece, and meanwhile, the heat expansion and cold melting coefficients of the metal piece and a non-metal fluorine material are different, so that the phenomena of deformation, cracking and falling off are easy to occur in the use process.
Disclosure of Invention
The utility model aims at solving the technical problem and providing a waste acid concentration pump.
In order to realize the technical purpose, reach foretell technical requirement, the utility model discloses the technical scheme who adopts is: a spent acid concentrate pump, comprising:
the middle part of the middle support is connected with a pump shaft, two ends of the pump shaft penetrate out of the middle support, and one end of the pump shaft is connected with the bearing box through a screw;
the other end of the bearing box is connected with the bracket through a bolt;
-a pump cover connected to another end of said intermediate support;
the auxiliary impeller is connected to the pump shaft, penetrates through the pump cover and is arranged on the front side of the pump cover and is in clearance fit with the pump cover;
the shaft sleeve is provided with a stepped hole structure and is connected to the step of the pump shaft, the small hole end of the stepped hole is connected with the auxiliary impeller, and the outer ring of the large hole end is sleeved with a mechanical seal;
the sealing box is provided with a stepped hole structure, a large end face is fastened on the front end face of the pump cover through screws, a small-diameter hole is in clearance fit with the shaft sleeve, a mechanical seal is arranged in the large-diameter hole, and the small end face is connected with the mechanical gland through screws;
the main impeller is connected to the pump shaft through an impeller nut and is in clearance fit with the pump cover;
the pump body is connected to the other end of the middle support, presses the pump cover and is in clearance fit with the main impeller, and the main impeller is arranged in the pump body;
and a suction chamber connected to the other end of the pump body by a bolt.
Preferably: the bearing box comprises a box body, a flange at one end is connected with the middle bracket, and an ear plate at the other end is connected with the bracket; the first bearing assembly and the second bearing assembly are connected to the pump shaft at intervals, and the first bearing assembly is connected with the box body; the bearing box is connected with the end face of the box body, which is provided with the lug plate, through a screw, the outer ring is connected with the box body, and the inner ring is connected with the second bearing assembly; the rear bearing gland is connected to the end face of the bearing box through a screw, is used for pressing the second bearing assembly and is in contact with the pump shaft through a sealing ring; and the front bearing gland is connected to the end surface of the box body through a screw and is used for pressing the bearing assembly.
Preferably: the first bearing assembly is arranged at one end close to the middle bracket, is connected to the pump shaft and is connected with the box body; the first bearing is a bearing, one end of the first bearing is attached to the front bearing gland, the first bearing is limited, and the other end of the first bearing is attached to the check ring and is limited.
Preferably: the second bearing assembly is arranged at one end far away from the middle bracket, is connected to the pump shaft, is limited on the pump shaft through a round nut and is connected with the bearing box; and the second bearing is two parallel bearings, one end of the second bearing is attached to the bearing box and is limited, and the other end of the second bearing is attached to the rear bearing gland and is limited.
Preferably: the sub-impeller is a semi-open impeller, including: the sleeve is connected to the pump shaft; a cover plate connected to the sleeve; and at least four vanes are connected to one side wall of the cover plate and face away from the main impeller.
The impeller is as follows: the number of the blades of the open impeller is 4-6.
The pump body is: a volute type structure.
The utility model has reasonable structure, the pump type adopts a volute mixed flow pump, the flow channel of the pump body is spacious and not easy to be blocked, and the cavitation allowance is large; the middle bracket is adopted, so that the disassembly and the maintenance are convenient; the shaft seal is formed by combining an auxiliary impeller and double end surfaces in a mechanical sealing mode and is suitable for conveying corrosive liquid containing suspended particles; the design reliability of the shaft and the bearing is high, so that the operation is stable, the vibration is small, the noise is low, and the service life is long.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the bearing housing of FIG. 1;
FIG. 3 is a schematic view of the structure of the auxiliary impeller of FIG. 1;
in the figure: 1. the pump comprises a suction chamber, 2, an impeller nut, 3, a main impeller, 4, a pump body, 5, a pump cover, 6, a secondary impeller, 61, a sleeve, 62, a cover plate, 63, a blade, 7, a seal box, 8, a mechanical seal, 9, an intermediate support, 10, a bearing box, 101, a front bearing gland, 102, a first bearing assembly, 1021, a retainer ring, 1022, a first bearing, 103, a box body, 1031, an ear plate, 104, a bearing box, 105, a second bearing assembly, 1051, a second bearing, 1052, a round nut, 106, a rear bearing gland, 107, a seal ring, 14, a shaft sleeve, 15, a mechanical gland, 16, a support and 17.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
In the figure: a spent acid concentrate pump, comprising:
the middle support 9 is connected with a pump shaft 17, two ends of the pump shaft 17 penetrate through the middle support 9, and one end of the pump shaft is connected with the bearing box 10 through a screw;
the bearing housing 10, the other end of which is bolted to the bracket 16;
a pump cover 5 connected to the other end of said intermediate support 9;
the auxiliary impeller 6 is connected to the pump shaft 17, penetrates through the pump cover 5 and is arranged on the front side of the pump cover 5, and is in clearance fit with the pump cover 5;
a shaft sleeve 14 which has a stepped hole structure and is connected to the step of the pump shaft 17, wherein the small hole end of the stepped hole is connected with the auxiliary impeller 6, and the outer ring of the large hole end is sleeved with a mechanical seal 8;
the sealing box 7 is of a stepped hole structure, a large end face is fastened on the front end face of the pump cover 5 through screws, a small-diameter hole is in clearance fit with the shaft sleeve 14, a mechanical seal 8 is arranged in the large-diameter hole, and the small end face is connected with a mechanical gland 15 through screws;
the main impeller 3 is connected to the pump shaft 17 through an impeller nut 2 and is in clearance fit with the pump cover 5;
the pump body 4 is connected to the other end of the intermediate bracket 9, presses the pump cover 5 and is in clearance fit with the main impeller 3, and the main impeller 3 is arranged in the pump body 4;
and a suction chamber 1 connected to the other end of the pump body 4 by a bolt.
The bearing box 10 comprises a box body 103, a flange at one end is connected with the middle bracket 9, and an ear plate 1031 at the other end is connected with the bracket 16; the first bearing assembly 102 and the second bearing assembly 105 are connected on the pump shaft 17 at intervals, and the first bearing assembly 102 is connected with the box body 103; a bearing box 104, which is connected with the end surface of the box 103 with the lug plate 1031 through a screw, the outer ring is connected with the box 103, and the inner ring is connected with a second bearing unit 105; a rear bearing gland 106 which is connected with the end face of the bearing box 104 through a screw and is used for pressing the second bearing assembly 105 and is contacted with the pump shaft 17 through a sealing ring 107; and a front bearing gland 101 which is connected to the end face of the box body 103 through screws and is used for pressing the bearing assembly 102.
The first bearing assembly 102 is arranged at one end close to the middle bracket 9, is connected to the pump shaft 17 and is connected with the box body 103; and the first bearing 1022 is a bearing, one end of the first bearing 1022 is attached to the front bearing gland 101 to limit the first bearing 1022, and the other end of the first bearing 1022 is attached to the retainer ring 1021 to limit the first bearing 1022.
The second bearing assembly 105 is arranged at one end far away from the middle bracket 9, is connected to the pump shaft 17, is limited on the pump shaft 17 through a round nut 1052, and is connected with the bearing box 104; and the second bearing 1051 is two parallel bearings, one end of the second bearing 1051 is attached to the bearing box 104 to limit the second bearing 1051, and the other end of the second bearing 1051 is attached to the rear bearing gland 106 to limit the second bearing 1051.
The sub-impeller 6 is a semi-open impeller including: a set 61 connected to the pump shaft 17; a cover plate 62 connected to the sleeve 61; and at least four vanes 63 are attached to one side wall of the cover plate 62 and face away from the main impeller 3.
The impeller 3 is: the number of the blades of the open impeller is 4-6.
The pump body 4 is: a volute type structure.
When the method is specifically implemented, according to the characteristics of parameters required by the process and the optimal flow conditions, the pump type adopts a volute type mixed-flow pump. The middle support 9 is adopted, the disassembly and the maintenance are convenient, the connecting pipeline can not be disassembled during the maintenance, the bolt on the bearing box 10 and the impeller nut 2 are loosened, and the pump shaft can be pulled out. The shaft seal adopts the combination of an auxiliary impeller and double end face mechanical seal or the combination of the auxiliary impeller and a novel filler, and the two structural forms are both suitable for conveying corrosive liquid containing suspended particles. The pump body flow channel is wide and not easy to block, and the cavitation allowance is large. The flow passage component is made of corrosion-resistant high-chromium high-molybdenum high-nickel alloy jointly developed with university. The design reliability of the shaft and the bearing is high, so that the operation is stable, the vibration is small, the noise is low, and the service life is long.
The above embodiments of the present invention are only examples for clearly illustrating the present invention, but not for limiting the scope of the present invention, and all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (7)
1. A spent acid concentrate pump, comprising:
the middle support (9) is connected with a pump shaft (17), two ends of the pump shaft (17) penetrate through the middle support (9), and one end of the pump shaft is connected with the bearing box (10) through a screw;
-a bearing housing (10) with the other end bolted to the bracket (16);
-a pump cover (5) connected to the other end of said intermediate support (9);
the auxiliary impeller (6) is connected to the pump shaft (17), penetrates through the pump cover (5), is arranged on the front side of the pump cover (5), and is in clearance fit with the pump cover (5);
the shaft sleeve (14) is provided with a stepped hole structure and is connected to the step of the pump shaft (17), the small hole end of the stepped hole is connected with the auxiliary impeller (6), and the outer ring of the large hole end is sleeved with the mechanical seal (8);
the sealing box (7) is of a stepped hole structure, a large end face is fastened on the front end face of the pump cover (5) through screws, a small-diameter hole is in clearance fit with the shaft sleeve (14), a mechanical seal (8) is arranged in the large-diameter hole, and the small end face is connected with a mechanical gland (15) through screws;
the main impeller (3) is connected to the pump shaft (17) through an impeller nut (2) and is in clearance fit with the pump cover (5);
the pump body (4) is connected to the other end of the intermediate support (9), presses the pump cover (5) and is in clearance fit with the main impeller (3), and the main impeller (3) is arranged in the pump body (4);
and a suction chamber (1) connected to the other end of the pump body (4) by means of a screw.
2. A spent acid concentrating pump according to claim 1, wherein: the bearing box (10) comprises a box body (103), a flange at one end is connected with the middle bracket (9), and an ear plate (1031) at the other end is connected with the bracket (16); the first bearing assembly (102) and the second bearing assembly (105) are connected to the pump shaft (17) at intervals, and the first bearing assembly (102) is connected with the box body (103); a bearing box (104) which is connected with the end surface of the box body (103) with the lug plate (1031) through a screw, the outer ring is connected with the box body (103), and the inner ring is connected with a second bearing unit (105); a rear bearing gland (106) which is connected to the end face of the bearing box (104) through screws and is used for pressing the second bearing assembly (105) and is contacted with the pump shaft (17) through a sealing ring (107); and the front bearing gland (101) is connected to the end face of the box body (103) through screws and is used for pressing the bearing assembly (102).
3. A spent acid concentrate pump as claimed in claim 2, wherein: the first bearing assembly (102) is arranged at one end close to the middle bracket (9), is connected to the pump shaft (17) and is connected with the box body (103); and the first bearing (1022) is a bearing, one end of the first bearing (1022) is attached to the front bearing gland (101) to limit the first bearing (1022), the other end of the first bearing is attached to the retainer ring (1021) to limit the first bearing (1022).
4. A spent acid concentrate pump as claimed in claim 2, wherein: the second bearing unit (105) is arranged at one end far away from the middle bracket (9), is connected to the pump shaft (17), is limited on the pump shaft (17) through a round nut (1052), and is connected with the bearing box (104); and the second bearing (1051) is two parallel bearings, one end of the second bearing (1051) is attached to the bearing box (104) to limit the second bearing (1051), and the other end of the second bearing (1051) is attached to the rear bearing gland (106) to limit the second bearing (1051).
5. A spent acid concentrating pump according to claim 1, wherein: the sub-impeller (6) is a semi-open impeller comprising: a set (61) connected to the pump shaft (17); a cover plate (62) connected to the sleeve (61); and at least four blades (63) are connected to one side wall of the cover plate (62) and face away from the main impeller (3).
6. A spent acid concentrating pump according to claim 1, wherein: the impeller (3) is: the number of the blades of the open impeller is 4-6.
7. A spent acid concentrating pump according to claim 1, wherein: the pump body (4) is: a volute type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021435500.5U CN213298294U (en) | 2020-07-21 | 2020-07-21 | Waste acid concentration pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021435500.5U CN213298294U (en) | 2020-07-21 | 2020-07-21 | Waste acid concentration pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213298294U true CN213298294U (en) | 2021-05-28 |
Family
ID=76020733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021435500.5U Active CN213298294U (en) | 2020-07-21 | 2020-07-21 | Waste acid concentration pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213298294U (en) |
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2020
- 2020-07-21 CN CN202021435500.5U patent/CN213298294U/en active Active
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