CN209687778U - A kind of high-performance chemical pump - Google Patents
A kind of high-performance chemical pump Download PDFInfo
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- CN209687778U CN209687778U CN201822209472.4U CN201822209472U CN209687778U CN 209687778 U CN209687778 U CN 209687778U CN 201822209472 U CN201822209472 U CN 201822209472U CN 209687778 U CN209687778 U CN 209687778U
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- pump
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- sealing
- cover
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Abstract
The utility model discloses a kind of high-performance chemical pumps, are related to chemical industry pump technical field, solve that existing equipment service life is short, is not easy the technical issues of assembling comprising bearing housing and the pump housing；Pump shaft is provided on the bearing housing；The pump housing is connect by pump cover with bearing housing；Sealing gland is provided on the pump cover；Described pump shaft one end is disposed with impeller nut, impeller and axle sleeve；Sealing cavity is formed between the pump cover and sealing gland and axle sleeve；Sealing device is provided in the sealing cavity；The pump cover is made of the first pump cover and the second pump cover；The impeller includes back shroud；Cavity is formed at the back shroud and blade exit section；Not only convenient processing and manufacture ensure that precision, and is easily installed, before bearing the design of gland and bearing rear pressing cover can balancing axial thrust, extend service life.
Description
Technical field
The utility model relates to chemical industry pump technical field more particularly to a kind of high-performance chemical pumps.
Background technique
No-leakage pump includes canned motor pump, magnetic drive pump, positive displacement pumps etc., because fluid end and power end are isolated set completely
It separates, no axle stretch end, variation is sealed into static seal, realizes No leakage.Here no-leakage pump is primarily referred to as canned motor pump and magnetic force
Pump.No-leakage pump is widely used in the conveying of the corrosive media in Chemical Manufacture, the electrolyte conveying in non-ferrous metal metallurgy, vapour
Numerous industries such as acid cleaning process and pharmacy, petroleum, electric power, plating, dyestuff, pesticide, papermaking, food, weaving in vehicle manufacture,
Convey the danger mediums such as toxic, corrosivity, inflammable, explosive for a long time under the conditions of -2~-150 DEG C of temperature.No-leakage pump manufacture
Cost is more expensive than conventional pumps, but its use and maintenance cost is more much lower than common mechanical sealing chemical pump.Do not had by no-leakage pump
Machine envelope and bearing housing, pump shaft are entirely sealed in housing (separation sleeve), and variation is sealed into static seal, efficiently solve leakage and
Lubrication problem；Secondly, no-leakage pump eliminates shaft coupling, it is hardened and is connected as being flexible coupling, efficiently solves overload, vibration and noise
Problem；In addition, no-leakage pump vulnerable part significantly reduces, maintenance and maintenance cost are reduced.
Chemical industry occupies very important position in national economy, chemical pump as crucial corollary equipment also increasingly
It is concerned by people, existing chemical pump has the disadvantage that due to the defects of structure design
1. poor sealing performance be easy to cause leakage；
2. sealing, cooling structure design is unreasonable, and seal life is short；
3. pump cover structure design is unreasonable, not only processing and manufacturing is inconvenient, and precision is difficult to ensure, and makes sealing device
Installation is inconvenient；
4. axial force control design case is unreasonable, bearing is generally relied on to bear axial force, so that bearing reduced service life.
Utility model content
The utility model aim is to provide a kind of high-performance chemical pump, solves the above technical problem.
In order to achieve the above technical purposes, reach above-mentioned technical requirements, the technical scheme adopted by the utility model is
A kind of high-performance chemical pump, including bearing housing, bracket and the pump housing；Pump shaft is provided in the bearing housing；The pump
Body is fixedly connected by pump cover with bearing housing；Mechanical seal is provided on the pump cover；Described pump shaft one end is successively set
Be equipped with impeller nut, impeller, mechanical seal and axle sleeve, along pump shaft direction be additionally provided with bearing before gland and bearing rear pressing cover, institute
Sealing cavity is formed between the pump cover and mechanical seal and axle sleeve stated.
Implement above-mentioned technical proposal, chemical pump uses integrated mechanical sealing, its installation accuracy can be improved, and reduces artificial behaviour
Make and influence the probability of mechanical seal service life；External flushing cooling device is added, may be implemented to improve dissipating for mechanical seal
Thermal effect, and coolant seal face prevent from leading to dry combustion method due to sealing surface rubs and generates big calorimetric；It is pressed after gland and bearing before bearing
The design of lid, balances axial force, extends the service life of bearing and sealing device；
As a preferred technical scheme: the impeller and the pump housing is provided with sealing ring, the sealing ring in contact position
It is set in outside impeller inlet end.
As a preferred technical scheme: the mechanical seal is integrated mechanical sealing, and the mechanical seal passes through axle sleeve
It is set on pump shaft and is fixed by locking ring, and be symmetrical arranged inlet and outlet, water inlet and water outlet in mechanical seal
Mouth position is connected to form cooling-water duct with the sealing cavity.
As a preferred technical scheme: the water inlet and water outlet position are provided with water seal and locating plate, axle sleeve housing
Equipped with spring.Water seal and locating plate are set, further fix the relative position of axle sleeve and mechanical seal, while enhancing external flushing
The air-tightness of cooling device and water inlet, water outlet, prevents from leaking.
As a preferred technical scheme: the spring pressure of the spring is 0.15MPa-0.25MPa.Due to mechanical seal bullet
It is excessive that spring ratio presses through the big sealing surface frictional heat that will lead to, and is not easy to form lubricating liquid film between sealing surface so as to cause lubricating fluid,
Then generate dry combustion method phenomenon, therefore reduce mechanical seal spring pressure, can ensure sealing surface lubrication, prolonged mechanical sealing make
Use the service life.
As a preferred technical scheme: the bearing housing side is provided with peephole, bearing housing top is provided with gas
Port lid, bearing housing bottom is provided with opening, and manhole cover is arranged in opening.
The position for being that gland and bearing rear pressing cover connect before bearing on axis respectively is provided with outside framework oil seal I, bearing I, axis
II and outside framework oil seal II are held, and passes through the fixed position of round nut.
The beneficial effects of the utility model are: compared with prior art, high-performance chemical pump provided by the utility model is adopted
With integrated mechanical sealing, precision ensure that, and be easily installed；Recirculated cooling water protects mechanically-sealing apparatus, Ke Yishi
The heat dissipation effect of mechanical seal, and coolant seal face are now improved, prevents from leading to dry combustion method due to sealing surface rubs and generates big calorimetric；Axis
The design of brought forward gland and bearing rear pressing cover, balances axial force, extends the service life of bearing and sealing device.
Detailed description of the invention
Fig. 1 is the utility model general assembly drawing；
Fig. 2 is the structural schematic diagram of the utility model mechanical seal；
In figure: 1. pump housings, 2. sealing rings, 3. impellers, 4. pump covers, 5. bearing housings, 6. mechanical seals, 601. axle sleeves,
602. water inlets, 603. water outlets, 604. locating plates, 605. water seals, 606. locking rings, 607. springs, gland before 7. bearings, 8.
Axis, 9. bearing rear pressing covers, 10. outside framework oil seals I, 11. bearings I, 12. manhole covers, 13. brackets, 14. bearings II, 15. round nuts,
16. outside framework oil seal II.
Specific embodiment
The utility model is further described with reference to the accompanying drawing；
In attached Fig. 1 and 2: a kind of high-performance chemical pump, including bearing housing 5, bracket 13 and the pump housing 1；The bearing
Pump shaft is provided in cabinet 5；The pump housing 1 is fixedly connected by pump cover 4 with bearing housing 5；It is provided on the pump cover 4
Mechanical seal 6；Described pump shaft one end is disposed with impeller nut, impeller 3, mechanical seal 6 and axle sleeve 601, along pump shaft side
To gland 7 and bearing rear pressing cover 9 before bearing is additionally provided with, formed between the pump cover 4 and mechanical seal 6 and axle sleeve 601 close
Seal cavity.
Implement above-mentioned technical proposal, chemical pump uses integrated mechanical sealing, its installation accuracy can be improved, and reduces artificial behaviour
Make and influence the probability of 6 service life of mechanical seal；External flushing cooling device is added, may be implemented to improve mechanical seal 6
Heat dissipation effect, and coolant seal face prevent from leading to dry combustion method due to sealing surface rubs and generates big calorimetric；Gland 7 and bearing before bearing
The design of rear pressing cover 9, balances axial force, extends the service life of bearing and sealing device；
As a preferred technical scheme: the impeller 3 and the pump housing 1 is provided with sealing ring 2, the sealing in contact position
Ring 2 is set in outside 3 inlet end of impeller.
As a preferred technical scheme: the mechanical seal 6 is integrated mechanical sealing, and the mechanical seal 6 passes through axis
Set 601 is set on pump shaft and is fixed by locking ring 606, and water inlet 602 and water outlet are symmetrical arranged in mechanical seal 6
603, water inlet 602 and 603 position of water outlet are connected to form cooling-water duct with the sealing cavity.
As a preferred technical scheme: the water inlet 602 is provided with water seal 605 and locating plate with 603 position of water outlet
604, axle sleeve 601 is set with spring 607 outside.Water seal 605 and locating plate 604 are set, axle sleeve 601 and mechanical seal are further fixed
6 relative position, while enhancing the external air-tightness for rinsing cooling device and water inlet 602, water outlet 603, it prevents from leaking.
As a preferred technical scheme: the spring pressure of the spring 607 is 0.15MPa-0.25MPa.Due to mechanical close
It is more excessive than pressing through the big sealing surface frictional heat that will lead to seal 6 springs 607, is not easy to form profit between sealing surface so as to cause lubricating fluid
Synovial membrane then generates dry combustion method phenomenon, therefore reduces by 6 spring pressure of mechanical seal, can ensure lubrication, the prolonged mechanical of sealing surface
The service life of sealing 6.
As a preferred technical scheme: 5 side of bearing housing is provided with peephole, is provided at the top of bearing housing 5
Air-vent cap, 5 bottom of bearing housing is provided with opening, and manhole cover 12 is arranged in opening.
The position for being that gland 7 and bearing rear pressing cover 9 connect before bearing on axis 8 respectively is provided with outside framework oil seal I 10, bearing
I 11, bearing II 14 and outside framework oil seal II 13, and pass through the fixed position of round nut 15.The twice bearing I of II 14 size of bearing
11, and 9 size of bearing rear pressing cover is less than gland 7 before bearing.
The specific implementation of the utility model: the cavity formed between gland 7 and bearing rear pressing cover 9 before the bearing is set
It sets, can reach the purpose of balancing axial thrust, when medium enters impeller by pump housing import, vacuum can be formed before back shroud,
Due to the effect of blade, so that medium is got rid of place, at blade exit, understands the refluence of some medium, form thrust 4, it will
Impeller is pushed away to pump housing entrance, this thrust is born by bearing, and when thrust reaches the power limit of bearing, bearing will be damaged
It is bad, by the way that pre-small post-large duplex bearing is arranged and reduces the size of back shroud, by reinforce tail end to the bond stress of pump shaft come
Reduce axial displacement and the thrust to impeller, to extend the service life of pump.
Above-described embodiment is only intended to clearly illustrate description made by the utility model, and not to the limit of embodiment
Fixed, to those of ordinary skill in the art, made equivalent structure variation, should all similarly wrap on the basis of the above description
Containing within the protection scope of the present utility model.
Claims (6)
1. a kind of high-performance chemical pump, including bearing housing (5), bracket (13) and the pump housing (1)；In the bearing housing (5)
It is provided with pump shaft (8)；The pump housing (1) is fixedly connected by pump cover (4) with bearing housing (5)；It is set on the pump cover (4)
It is equipped with mechanical seal (6)；Described pump shaft (8) one end is disposed with impeller nut, impeller (3), mechanical seal (6), axle sleeve
(601), it is characterised in that: along pump shaft (8) direction be additionally provided with bearing before gland (7) and bearing rear pressing cover (9), the pump cover
(4) sealing cavity is formed between mechanical seal (6) and axle sleeve (601).
2. high-performance chemical pump according to claim 1, it is characterised in that: the impeller (3) is being contacted with the pump housing (1)
Position is provided with sealing ring (2), and the sealing ring (2) is set in outside impeller (3) inlet end.
3. high-performance chemical pump according to claim 1, it is characterised in that: the mechanical seal (6) is that packaging type is mechanical
Sealing, the mechanical seal (6) are set on pump shaft (8) by axle sleeve (601) and are fixed by locking ring (606), and mechanical
Seal and be symmetrical arranged water inlet (602) and water outlet (603) on (6), water inlet (602) and water outlet (603) position with it is described
Sealing cavity is connected to form cooling-water duct.
4. high-performance chemical pump according to claim 3, it is characterised in that: the water inlet (602) and water outlet (603)
Position is provided with water seal (605) and locating plate (604), is set with spring (607) outside axle sleeve (601).
5. high-performance chemical pump according to claim 4, it is characterised in that: the spring pressure of the spring (607) is
0.15MPa-0.25MPa。
6. high-performance chemical pump according to claim 1, it is characterised in that: bearing housing (5) side is provided with sight
Air-vent cap is provided at the top of gaging hole, bearing housing (5), bearing housing (5) bottom is provided with opening, and manhole cover is arranged in opening
(12)。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018204377640 | 2018-03-29 | ||
| CN201820437764 | 2018-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209687778U true CN209687778U (en) | 2019-11-26 |
Family
ID=68597065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822209472.4U Active CN209687778U (en) | 2018-03-29 | 2018-12-27 | A kind of high-performance chemical pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209687778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828369A (en) * | 2020-08-03 | 2020-10-27 | 江苏旭信机械制造有限公司 | Axial force self-balancing centrifugal chemical pump |
-
2018
- 2018-12-27 CN CN201822209472.4U patent/CN209687778U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828369A (en) * | 2020-08-03 | 2020-10-27 | 江苏旭信机械制造有限公司 | Axial force self-balancing centrifugal chemical pump |
| CN111828369B (en) * | 2020-08-03 | 2021-06-18 | 江苏旭信机械制造有限公司 | Axial force self-balancing centrifugal chemical pump |
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