CN212615604U - Wear-resisting corrosion-resistant chemical pump inlet structure - Google Patents
Wear-resisting corrosion-resistant chemical pump inlet structure Download PDFInfo
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- CN212615604U CN212615604U CN202021714502.8U CN202021714502U CN212615604U CN 212615604 U CN212615604 U CN 212615604U CN 202021714502 U CN202021714502 U CN 202021714502U CN 212615604 U CN212615604 U CN 212615604U
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Abstract
The utility model provides a wear-resistant corrosion-resistant chemical pump inlet structure, which comprises a pump body, wherein the pump body is provided with a pump body inlet and a pump body outlet, the pump body inlet is communicated with the pump body outlet, a wear-resistant corrosion-resistant mechanism is arranged at the position of the pump body inlet of the pump body, and the wear-resistant corrosion-resistant mechanism is in interference fit with the pump body; the wear-resistant and corrosion-resistant mechanism consists of a framework and a wear-resistant and corrosion-resistant sleeve, wherein the surface of the framework is coated with silicon rubber RTV-2 to form the wear-resistant and corrosion-resistant sleeve, and a base material of the wear-resistant and corrosion-resistant sleeve contains 3-5% by mass of graphene, so that the wear-resistant and corrosion-resistant mechanism has a good wear-resistant and corrosion-resistant effect, and the binding force is firmer after sintering. Under the long-time wearing and corrosion, only need change wear-resisting corrosion resistant mechanism, need not to change the pump body, further improve the operating efficiency of pump and the stability of pump to greatly increased the life of pump and reduced the maintenance cycle.
Description
Technical Field
The utility model relates to a wear-resisting corrosion-resistant chemical pump inlet structure belongs to chemical pump technical field.
Background
The wear-resistant and corrosion-resistant chemical pump can be widely used for conveying slurry containing abrasive solid particles in industries such as paper mills, food processing and environmental protection, such as paper pulp in the paper mills. In the chemical industry, corrosive slurry containing crystals can also be conveyed. The material of the wear-resisting corrosion-resistant chemical pump that uses on the existing market is beautiful mark 304, or diphase neutral steel, though has certain corrosion resistance, but its wear resistance is relatively poor, after the pump operates for a long time, the phenomenon of wearing and tearing can appear in the pump body and impeller, in case wearing and tearing exceed certain scope, the conveying efficiency of pump just by a wide margin descends, and the noise of pump operation can increase at double moreover, for this reason the utility model discloses from increasing a wear-resisting corrosion resistant mechanism in pump body import, main aim at improves the working property of chemical pump, improves the work efficiency of pump to reach the life that increases the pump and reduce the cost of overhaul.
The existing chemical process alkali liquor circulating pump comprises: the pump body, impeller, bearing frame, pump shaft, suspension bracket, the inboard of the pump body install wear-resisting welt through elastic element and anti-rotation locating pin, bearing frame one end be fixed with the bearing gland through bolted connection, the other end is fixed with the bearing box through locking screw, the bearing box on still be provided with adjusting screw, adjusting screw's tail end and bearing box tip extrusion laminating. The device structure is complicated, and if blockking up inconvenient clearance, the part that overflows do not do high corrosion-resistant high abrasion resistance and handle, later maintenance cost are higher.
The back of CNP pump is equipped with bearing box, and the bearing box is equipped with adjusting bolt and locking bolt, the interior of bearing box is embedded with high-temperature bearing, and the high-temperature bearing and pump shaft adopt interference fit method, so that the gap between impeller and pump cover can be effectively regulated, and the pump can produce negative pressure when running, so that the service life of mechanical seal can be effectively prolonged. The device structure is simple, convenient operation, if the pump body wearing and tearing corrode seriously, it is big to change the pump body cost, and the part that overflows does not do high corrosion-resistant high abrasion and corrosion-resistant processing moreover.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a phenomenon that wearing and tearing, corruption, gasification are serious appears in long-time work in pump body import, provide a wear-resisting corrosion-resistant chemical industry pump import structure, add a wear-resisting corrosion resistant mechanism in pump body import promptly, this mechanism has increased the backward flow resistance, has reduced the internal leakage, has prolonged the life of pump. Even under the condition that long-term work is worn and torn to some extent, only need to change wear-resisting mechanism, need not to change the pump body, reduced the maintenance cost in later stage.
The utility model aims at realizing like this, a wear-resisting corrosion-resistant chemical industry pump inlet structure, including the pump body, be equipped with pump body import, pump body export on the pump body, pump body import link up characterized by with pump body export:
the pump body inlet of the pump body is provided with a wear-resistant and corrosion-resistant mechanism, and the wear-resistant and corrosion-resistant mechanism is in interference fit with the pump body; the wear-resistant and corrosion-resistant mechanism consists of a framework and a wear-resistant and corrosion-resistant sleeve, wherein the surface of the framework is coated with silicon rubber RTV-2 to form the wear-resistant and corrosion-resistant sleeve, and the silicon rubber RTV-2 contains a graphene material.
The skeleton shape is right angle shape or two right angle shapes.
The matrix material used by the wear-resistant and corrosion-resistant sleeve is silicon rubber RTV-2, and the silicon rubber matrix material contains 3-5% of graphene by mass ratio.
All sharp corners of the framework are chamfered to improve the adhesion strength with the wear-resistant and corrosion-resistant sleeve; the thickness of the framework is uniform.
After the surface of the framework is coated with the silicon rubber RTV-2, drying, and sintering and forming at 200-300 ℃ to form the wear-resistant corrosion-resistant sleeve; the wear-resistant and corrosion-resistant sleeve on the surface of the framework is uniform in thickness, and the surface of the framework is subjected to smoothing treatment.
The thickness of the wear-resistant and corrosion-resistant sleeve is 0.8-1 time of that of the framework.
The wear-resistant and corrosion-resistant mechanism is in clearance fit with the impeller, and the clearance is kept between 0.1mm and 0.25 mm.
The pump body is internally provided with an impeller, the impeller is positioned in the pump body between the inlet and the outlet of the pump body, the pump shaft is arranged in the pump body, and the impeller is driven to rotate by the power transmitted by the pump shaft; the pump cover is fixedly connected with the bracket, one end of the pump cover abuts against the pump body, the pump cover is fixedly connected with the bracket, and a sealing ring for preventing fluid leakage is arranged between the pump cover and the pump body.
The right end of the pump body is circumferentially and uniformly provided with bolts, and the right end of the pump body is fixedly connected with the bracket through the bolts in a screwing mode.
The pump cover is circumferentially and uniformly provided with bolts, and the pump cover is fixedly connected with the bracket through the bolts in a screwing mode.
The utility model has reasonable structure and convenient use, and provides a wear-resistant corrosion-resistant chemical pump inlet structure which comprises a wear-resistant corrosion-resistant mechanism, an impeller, a pump body, a pump cover and a bracket, wherein the wear-resistant corrosion-resistant mechanism of the chemical pump consists of a framework and a wear-resistant corrosion-resistant sleeve; the skeleton shape is a right-angle shape or a double-right-angle shape; the wear-resistant and corrosion-resistant sleeve matrix material contains a graphene material.
The utility model discloses further set up to, the wear-resisting corrosion resistant mechanism of pump includes skeleton and wear-resisting corrosion resistant cover, if its phenomenon that appears wearing and tearing and corruption in long-time work, removable wear-resisting corrosion resistant mechanism, the life of extension pump reduces the later maintenance cost. All sharp corners of the framework in the wear-resistant and corrosion-resistant mechanism are chamfered, so that the adhesion strength of the framework and the wear-resistant and corrosion-resistant sleeve is improved, the thickness of the framework is uniform, the shape of the framework is right-angled, and the rigidity of the wear-resistant and corrosion-resistant mechanism is ensured due to the double right-angled shape. And carrying out surface pretreatment before coating on a framework in the wear-resistant and corrosion-resistant mechanism. The technical steps comprise: degreasing by using a cleaning agent, rinsing by using clear water and drying. The wear-resistant and corrosion-resistant sleeve in the wear-resistant and corrosion-resistant mechanism is made of a silicon rubber matrix material (RTV-2), the matrix material contains 3-5% of graphene by mass, after the surface of the framework is coated, the framework is dried and sintered and formed at 200-300 ℃, then the surface of the wear-resistant and corrosion-resistant sleeve on the surface layer of the framework is subjected to smoothing treatment, and the thickness uniformity of the wear-resistant and corrosion-resistant sleeve on the surface of the framework is ensured.
The base material has certain elasticity and relatively large thermal expansion coefficient, and cannot be broken or fall off under the conditions of temperature, external force or vibration. And the matrix material contains graphene, the graphene has good chemical stability and extremely strong acid and alkali corrosion resistance, and the binding force between the framework and the wear-resistant and corrosion-resistant sleeve is firmer after sintering. The surface of the wear-resistant and corrosion-resistant sleeve is smoothly treated, so that the flowing state of fluid is not influenced, and loss is not caused.
The thickness of the wear-resistant and corrosion-resistant sleeve is 0.8-1 times of that of the framework, the wear-resistant and corrosion-resistant mechanism and the impeller are in clearance fit, the clearance is as small as possible and is kept at 0.1-0.2 mm.
By the technical scheme, the problems that liquid in a high-pressure area in the pump flows to a low-pressure area through the gap due to the fact that the gap between the impeller inlet and the pump shell is too large, the liquid volume of the pump is influenced, and the efficiency is reduced are solved, and the problems that the impeller and the pump shell are abraded due to the fact that the gap is too small, the surface protection layer formed by oxides can be washed away by high-speed fluid in the gap, and the metal corrosion is accelerated by the fluid are solved. Because the wear-resistant corrosion-resistant sleeve base material has certain elasticity and is wear-resistant with the impeller, even if the impeller is slightly unstable, the impeller can not be greatly deformed by collision.
The utility model discloses an improve the stability that the operating efficiency of pump and pump are further improved to the relevant structure of pump to greatly increased the life of pump and reduced maintenance cycle. The chemical pump is suitable for transporting various corrosive fluids, so the application range of the chemical pump is very wide.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the inlet of the pump body is additionally provided with a wear-resistant and corrosion-resistant mechanism, the mechanism increases the reflux resistance, reduces the internal leakage and prolongs the service life of the impeller and the pump shell. Even under the condition of abrasion in long-term work, only the abrasion-resistant and corrosion-resistant mechanism needs to be replaced, the pump body does not need to be replaced, and the later maintenance cost is reduced.
2. The wear-resistant and corrosion-resistant sleeve of the wear-resistant and corrosion-resistant mechanism contains graphene, and the graphene has good chemical stability, strong acid and alkali corrosion resistance, firmer binding force after sintering and good wear-resistant and corrosion-resistant effects.
3. The utility model discloses well wear-resisting corrosion resistant mechanism adopts the compound mode of skeleton and wear-resisting corrosion resistant cover, uses parts that flow over such as impeller nut and impeller according to effective result analogy.
Drawings
Fig. 1 is a partial structural schematic view of a wear-resistant and corrosion-resistant chemical pump.
Fig. 2 is a schematic view of the wear-resistant and corrosion-resistant mechanism.
Fig. 3a is a schematic view of the shape of a double right-angled skeleton in the wear-resistant mechanism.
Fig. 3b is a schematic view of the shape of the right-angled skeleton in the wear mechanism.
In the figure: 1 wear-resistant corrosion-resistant mechanism, 1-01 framework, 1-02 wear-resistant corrosion-resistant sleeve, 2 impeller, 3 pump body, 4 pump cover, 5 bracket, 6-1 pump body inlet and 6-2 pump body outlet.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and the accompanying description.
A wear-resistant corrosion-resistant chemical pump inlet structure comprises a pump body 3, wherein a pump body inlet 6-1 and a pump body outlet 6-2 are arranged on the pump body 3, the pump body inlet 6-1 is communicated with the pump body outlet 6-2, a wear-resistant corrosion-resistant mechanism 1 is arranged at the position of the pump body inlet 6-1 of the pump body 3, and the wear-resistant corrosion-resistant mechanism 1 is in interference fit with the pump body 3; the wear-resistant and corrosion-resistant mechanism 1 consists of a framework 1-01 and a wear-resistant and corrosion-resistant sleeve 1-02, wherein the surface of the framework 1-01 is coated with silicon rubber RTV-2 to form the wear-resistant and corrosion-resistant sleeve 1-02, and the silicon rubber RTV-2 contains graphene materials.
Further, the shape of the framework 1-01 is a right-angle shape or a double-right-angle shape. The matrix material used by the wear-resistant and corrosion-resistant sleeve 1-02 is silicon rubber RTV-2, and the silicon rubber matrix material contains 3-5% of graphene by mass ratio. All sharp corners of the framework 1-01 are chamfered, so that the adhesion strength between the framework and the wear-resistant and corrosion-resistant sleeve 1-02 is improved; the thickness of the framework is 1-01. After the surface of the framework 1-01 is coated with the silicon rubber RTV-2, drying and sintering at 200-300 ℃ to form the wear-resistant and corrosion-resistant sleeve 1-02; the wear-resistant and corrosion-resistant sleeve 1-02 on the surface of the framework 1-01 is uniform in thickness, and the surface is subjected to smooth treatment. The thickness of the wear-resistant and corrosion-resistant sleeve 1-2 is 0.8-1 time of that of the framework 1-1. The wear-resistant and corrosion-resistant mechanism 1 is in clearance fit with the impeller 2, and the clearance is kept between 0.1mm and 0.25 mm. An impeller 2 is arranged in the pump body 3, the impeller 2 is positioned in the pump body 3 between the inlet and the outlet of the pump body, a pump shaft is arranged in the pump body 7, and the impeller 2 is driven to rotate by the power transmitted by the pump shaft; still set up pump cover 4, bracket 5, 3 right-hand members of the pump body and bracket 5 fixed connection, pump cover 4 one end is close to the pump body 3, and pump cover 4 and bracket 5 fixed connection, put the sealing washer that prevents the fluid and reveal between pump cover 4 and the pump body 3. Bolts are evenly distributed on the right end of the pump body 3 in the circumferential direction, and the right end of the pump body 3 is fixedly connected with the bracket 5 through the bolts in a screwing mode. Bolts are evenly distributed on the circumferential direction of the pump cover 4, and the pump cover 4 is fixedly connected with the bracket 5 through the bolts in a screwing mode.
As shown in fig. 1, the wear-resistant corrosion-resistant chemical pump comprises a wear-resistant corrosion-resistant mechanism 1, an impeller 2, a pump body 3, a pump cover 4 and a bracket 5, wherein the wear-resistant corrosion-resistant mechanism 1 is positioned at an inlet of the chemical pump and is in interference fit with the pump body 3, and the pressure is kept at 0.005-0.1 mm; the impeller 2 is positioned in the pump body 3 but is not contacted with the pump body 3, the left end of the impeller 2 is in clearance fit with the wear-resistant corrosion-resistant mechanism 1 in the circumferential direction, the clearance is kept between 0.1 and 0.2mm, the front end face of the left end is not contacted with the wear-resistant corrosion-resistant mechanism 1, and the right end is fixed on the pump shaft through bolts, fluorine gaskets and keys; the pump body 3 is provided with a fluid outlet which is supported by a bottom bracket, and the right end of the pump body is connected with the bracket 5 by adopting circumferentially uniformly distributed bolts; the pump cover 4 one end is close to the pump body 3, and couples with bracket 5 through circumference equipartition bolt, has put the sealing washer between pump cover 4 and the pump body 3, prevents that the fluid from revealing.
As shown in FIG. 2, the wear-resistant and corrosion-resistant mechanism 1 is composed of a framework 1-01 and a wear-resistant and corrosion-resistant sleeve 1-02. And rounding all sharp corners of the framework 1-01, and performing surface pretreatment on the framework 1-01 before coating. The technical steps comprise: degreasing by using a cleaning agent, rinsing by using clear water and drying. The wear-resistant and corrosion-resistant sleeve 1-02 is made of a silicon rubber base material RTV-2, the base material contains 3-5% of graphene by mass, after the surface of the framework 1-01 is coated, the framework is dried and sintered and formed at the temperature of 200-300 ℃, then the surface of the wear-resistant and corrosion-resistant sleeve 1-02 on the surface layer of the framework is subjected to smooth treatment, the thickness of the wear-resistant and corrosion-resistant sleeve 1-02 is ensured to be 0.8-1 time of that of the framework 1-01, and the thickness of the wear-resistant and corrosion-resistant sleeve 1-02 on the surface of the framework is uniform.
As shown in fig. 3a and 3b, the framework 1-01 has a double right-angled shape and a right-angled shape, and is used as a support for the wear-resistant and corrosion-resistant mechanism 1 to ensure the rigidity of the wear-resistant and corrosion-resistant mechanism 1.
The utility model discloses a theory of operation:
the wear-resistant and corrosion-resistant mechanism is added at the inlet of the pump body, so that the problems that the liquid in a high-pressure area in the pump flows to a low-pressure area through the gap due to the overlarge gap between the inlet of the impeller 2 and the pump body 3, the liquid output of the pump is influenced, and the efficiency is reduced are solved, and the problems that the impeller 2 and the pump body 3 are abraded due to the friction caused by the undersize gap, and the high-speed fluid in the gap can wash away a surface protection layer formed by oxides, so that the metal corrosion is accelerated by the fluid are solved. And because the base material of the wear-resistant and corrosion-resistant sleeve 1-02 has certain elasticity and is wear-resistant with the impeller 2, even if the impeller 2 is slightly unstable, the impeller 2 can not be greatly deformed by collision. The wear-resistant and corrosion-resistant sleeve 1-02 of the wear-resistant and corrosion-resistant mechanism 1 contains graphene, the graphene has good chemical stability, strong acid and alkali corrosion resistance, firmer binding force after sintering, and good wear-resistant and corrosion-resistant effects, and the operation efficiency and the stability of the pump are further improved, so that the service life of the pump is greatly prolonged, and the overhaul period is shortened.
The above detailed description is only for the purpose of illustrating the practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a wear-resisting corrosion-resistant chemical pump inlet structure, includes pump body (3), is equipped with pump body import, pump body export on the pump body (3), and pump body import link up characterized by with pump body export:
the wear-resistant and corrosion-resistant mechanism (1) is arranged at the position of a pump body inlet of the pump body (3), and the wear-resistant and corrosion-resistant mechanism (1) is in interference fit with the pump body (3); the wear-resistant and corrosion-resistant mechanism (1) is composed of a framework (1-01) and a wear-resistant and corrosion-resistant sleeve (1-02), and the surface of the framework (1-01) is coated with silicon rubber RTV-2 to form the wear-resistant and corrosion-resistant sleeve (1-02).
2. The inlet structure of the wear-resistant corrosion-resistant chemical pump as claimed in claim 1, wherein: the shape of the framework (1-01) is a right-angle shape or a double-right-angle shape.
3. The inlet structure of the wear-resistant corrosion-resistant chemical pump as claimed in claim 1, wherein: all sharp corners of the framework (1-01) are chamfered, so that the adhesion strength of the framework and the wear-resistant and corrosion-resistant sleeve (1-02) is improved; the framework (1-01) is uniform in thickness.
4. The inlet structure of the wear-resistant corrosion-resistant chemical pump as claimed in claim 1, wherein: the thickness of the wear-resistant and corrosion-resistant sleeve (1-02) is 0.8-1 time of that of the framework (1-01).
5. The inlet structure of the wear-resistant corrosion-resistant chemical pump as claimed in claim 1, wherein: the wear-resistant and corrosion-resistant mechanism (1) is in clearance fit with the impeller (2), and the clearance is kept between 0.1mm and 0.25 mm.
6. The inlet structure of the wear-resistant corrosion-resistant chemical pump as claimed in claim 1, wherein: an impeller (2) is arranged in the pump body (3), the impeller (2) is positioned in the pump body (3) between the pump body inlet and the pump body outlet, a pump shaft is arranged in the pump body (3), and the impeller (2) is driven to rotate by the power transmitted by the pump shaft; still be equipped with pump cover (4), bracket (5), pump body (3) right-hand member and bracket (5) fixed connection, pump cover (4) one end is close to the pump body (3), and pump cover (4) and bracket (5) fixed connection, has put the sealing washer that prevents the fluid and reveal between pump cover (4) and the pump body (3).
7. The inlet structure of the wear-resistant corrosion-resistant chemical pump as claimed in claim 6, wherein: the pump body (3) right-hand member circumference equipartition bolt, the fixed connection is screwed through bolt and bracket (5) to the pump body (3) right-hand member.
8. The inlet structure of the wear-resistant corrosion-resistant chemical pump as claimed in claim 6, wherein: the pump cover (4) is circumferentially and uniformly provided with bolts, and the pump cover (4) is screwed and fixedly connected with the bracket (5) through the bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021714502.8U CN212615604U (en) | 2020-08-18 | 2020-08-18 | Wear-resisting corrosion-resistant chemical pump inlet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021714502.8U CN212615604U (en) | 2020-08-18 | 2020-08-18 | Wear-resisting corrosion-resistant chemical pump inlet structure |
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| Publication Number | Publication Date |
|---|---|
| CN212615604U true CN212615604U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021714502.8U Active CN212615604U (en) | 2020-08-18 | 2020-08-18 | Wear-resisting corrosion-resistant chemical pump inlet structure |
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|---|---|
| CN (1) | CN212615604U (en) |
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2020
- 2020-08-18 CN CN202021714502.8U patent/CN212615604U/en active Active
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