CN216518663U - Automatic exhaust device of vertical multistage centrifugal pump - Google Patents
Automatic exhaust device of vertical multistage centrifugal pump Download PDFInfo
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- CN216518663U CN216518663U CN202123099692.4U CN202123099692U CN216518663U CN 216518663 U CN216518663 U CN 216518663U CN 202123099692 U CN202123099692 U CN 202123099692U CN 216518663 U CN216518663 U CN 216518663U
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- centrifugal pump
- multistage centrifugal
- exhaust
- exhaust valve
- vertical multistage
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- 239000002184 metal Substances 0.000 claims abstract description 24
- 238000007599 discharging Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 31
- 239000007789 gas Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses an automatic exhaust device of a vertical multistage centrifugal pump, which comprises a metal pipe connected with an upper exhaust port of the multistage centrifugal pump and a fixed block arranged on the metal pipe and used for being fixedly connected with the multistage centrifugal pump, wherein a lower clamping sleeve joint and an exhaust valve are respectively arranged at an inlet and an outlet of the metal pipe, the lower clamping sleeve joint is used for being connected at the exhaust port, the exhaust valve is a float-type automatic exhaust valve, an upper clamping sleeve joint positioned below the fixed block is also arranged on the metal pipe, and the upper clamping sleeve joint and the exhaust valve are movably connected with the fixed block through a threaded adapter; the vertical multistage centrifugal pump has the advantages of simple structure, safety and convenience in operation, capability of discharging gas accumulated in the pump system in time, solving the problem of inconvenience in manual exhaust operation of the conventional vertical multistage centrifugal pump, improving the working efficiency of the vertical multistage centrifugal pump and ensuring the safe operation of the pump system.
Description
Technical Field
The utility model belongs to the technical field of water supply and drainage equipment, and particularly relates to an automatic exhaust device of a vertical multistage centrifugal pump, which is particularly suitable for a cooling system in the fields of electric power systems and chemical engineering or other occasions.
Background
Water pumps are widely used in production as a means for moving liquids, gases or special fluid media. However, in actual production and application, various water pumps have the problem of air accumulation in the water pump body due to untight self sealing or untight connection mode, which causes the problem that the water pump is easy to vibrate during operation, thereby affecting the working efficiency of the water pump or causing the water pump to be incapable of working normally.
The multistage centrifugal pump is a water pump commonly used in water supply and drainage projects of towns and industrial enterprises, and is formed by combining more than two centrifugal pumps with the same function. The fluid channel structure is characterized in that the medium pressure relief port of the first stage is communicated with the inlet of the second stage, the medium pressure relief port of the second stage is communicated with the inlet of the third stage, and the multi-stage centrifugal pump is formed by the mechanisms connected in series.
The vertical multistage centrifugal pump adopts a vertical layout, so that gas in a pump system is easily accumulated at the top of a pump body, and when the vertical multistage centrifugal pump is started, the gas escape valve is firstly required to be opened to discharge air in a cavity, so that the vacuum in the cavity is achieved, and the effect of the water pump can be furthest exerted.
The air release valve mechanism of the existing water pump is directly locked on a pump body by using an exhaust nut, as shown in figure 1, when the air needs to be exhausted, the nut can be loosened or screwed by a spanner, and the use is very inconvenient.
Furthermore, manual venting has the following disadvantages:
manual venting is not suitable for narrow or hazardous spaces that are difficult for operators to access.
2, water seeps out in the manual exhaust process, and potential safety hazards are easily brought to an electrical system.
3, improper manual venting can lead to gas accumulation during operation of the pump system, possibly leading to top seal burnout.
4, for whole equipment unit, manual exhaust has undoubtedly increased the maintenance work load, is unfavorable for improving the work efficiency of pump system and personnel's work efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an automatic exhaust device of a vertical multistage centrifugal pump, which is used for optimizing an exhaust structure of the vertical multistage centrifugal pump, realizing automatic exhaust of a water pump and improving the reliability and maintainability of equipment.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides an automatic exhaust device of vertical multistage centrifugal pump, includes the tubular metal resonator of being connected with the last gas vent of multistage centrifugal pump and sets up the fixed block that is used for being connected with multistage centrifugal pump fastening on the tubular metal resonator, the entry and the exit of tubular metal resonator are provided with cutting ferrule joint and discharge valve down respectively, and lower cutting ferrule joint is used for connecting in gas vent department, discharge valve be buoy type automatic exhaust valve, still be provided with the last cutting ferrule joint that is located the fixed block below on the tubular metal resonator, last cutting ferrule joint and discharge valve all through screw adapter and fixed block swing joint.
The lower end part of the exhaust valve of the automatic exhaust device of the vertical multistage centrifugal pump is screwed with the threaded adapter through threads.
The automatic exhaust device of the vertical multistage centrifugal pump is characterized in that an exhaust valve of the automatic exhaust device is connected with the upper end of a metal pipe through an upper clamping sleeve joint.
The utility model has the beneficial effects that:
1, the automatic exhaust device based on the float-type automatic exhaust valve realizes the timely discharge of gas accumulated in the pump body, and submits the working efficiency of the vertical multistage centrifugal pump.
2, the automatic exhaust device based on the float-type automatic exhaust valve further improves the sealing effect of the vertical multistage centrifugal pump and avoids the water leakage phenomenon during manual exhaust.
2, the utility model realizes the maintenance-free of the vertical multi-stage centrifugal pump and improves the maintainability and the reliability of the equipment.
In general, the utility model has simple structure and safe and convenient operation, and can discharge the gas accumulated in the pump body in time so as to improve the working efficiency of the water pump and ensure the safe operation of the water pump.
Drawings
FIG. 1 is a schematic diagram of a prior art bleed valve mechanism for a water pump;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the liquid level in the exhaust valve at A;
fig. 4 is a schematic view of the liquid level in the exhaust valve at B.
The figures are numbered: 1-gas vent, 2-lower cutting ferrule connects, 3-tubular metal resonator, 4-go up cutting ferrule connects, 5-screw adapter, 6-fixed block, 7-discharge valve, 8-exhaust nut, 9-discharge valve gas vent, 10-flotation pontoon, 11-valve cap.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 2, the automatic exhaust device of the vertical multistage centrifugal pump disclosed by the utility model comprises a metal pipe 3 connected with an upper exhaust port 1 of the multistage centrifugal pump and a fixed block 6 arranged on the metal pipe 3 and used for being fixedly connected with the multistage centrifugal pump, wherein a lower clamping sleeve joint 2 and an exhaust valve 7 are respectively arranged at an inlet and an outlet of the metal pipe 3, the lower clamping sleeve joint 2 is used for being connected at the exhaust port 1, the exhaust valve 7 is an automatic exhaust valve with a buoy 10, an upper clamping sleeve joint 4 positioned below the fixed block 6 is also arranged on the metal pipe 3, and the upper clamping sleeve joint 4 and the exhaust valve 7 are movably connected with the fixed block 6 through a threaded adapter 5. Wherein the lower end part of the exhaust valve 7 is screwed with the threaded adapter 5 through threads, and the exhaust valve 7 is connected with the upper end of the metal pipe 3 through the upper clamping sleeve adapter 4.
The exhaust device is improved on the basis of the original manual exhaust structure of the water pump, and the manual exhaust nut 8 is replaced by the lower clamping sleeve joint 2 and is connected to the exhaust valve 7 through the metal pipe 3; in the operation process of the vertical multistage centrifugal pump, the exhaust nut 8 does not need to be screwed manually to exhaust manually, and the automatic exhaust device on the pump body can realize the automatic exhaust of the pump system.
When the multi-stage centrifugal pump is used, the lower clamping sleeve joint 2 is connected with the exhaust port 1 at the exhaust port 1 of the multi-stage centrifugal pump, so that the metal pipe 3 is connected to the multi-stage centrifugal pump, and the length of the metal pipe 3 can be adjusted according to the actual height of a pump body; the lower end of the exhaust valve 7 is connected with the threaded adapter 5 through threads and is connected with the upper end of the metal pipe 3 through the upper clamping sleeve joint 4; the exhaust valve 7 is connected with the motor shell through the fixing block 6 and is fastened by using bolts, and the size parameters of the fixing block 6 can be adjusted according to the specific parameters of the motor shell; when gas enters the valve cavity of the exhaust valve 7 and is gathered at the upper part of the valve cavity, the water level in the valve cavity is reduced, the floating cylinder 10 is reduced along with the reduction of the water level, the exhaust port 1 is opened, and the automatic exhaust of the multistage centrifugal pump is realized; when the gas is discharged, the water level rises, the float bowl 10 rises, the exhaust port 1 is closed, and water leakage is prevented.
In traditional manual exhaust process, operating personnel need at first with the latch segment of spanner centre gripping exhaust nut 8 shown in fig. 1, manual unscrewing or the bolt of screwing again, and operation process needs certain operating space, is not suitable for narrow operational environment to under the manual exhaust mode, if not normally exhaust and cause water pump top gathering air, cause water pump machine to seal easily and burn out, arouse equipment trouble.
By adopting the improved exhaust device, the gas accumulated in the vertical multistage centrifugal pump can be automatically exhausted through the exhaust valve 7 on the exhaust port 1 at the top of the pump body of the water pump, so that the maintenance-free vertical multistage centrifugal pump is realized, and the maintainability and the reliability of equipment are improved.
Fig. 3 is a schematic structural view of the exhaust valve 7, the exhaust valve 7 is mounted to the highest point of the pump system, and the fixing block 6 is fixed on the motor housing; when gas enters the valve cavity of the exhaust valve 7 and gathers at the upper part of the valve cavity, the water level in the valve cavity is reduced to B, as shown in figure 4, the buoy 10 is reduced along with the reduction, the exhaust port 9 of the exhaust valve is opened, and the automatic exhaust of the pump system is realized; when the gas is discharged, the water level in the valve cavity rises to A, the floating barrel 10 rises along with the water level, and the exhaust port 9 of the exhaust valve is closed, so that water leakage is avoided. When negative pressure is generated in the pump system, the water level in the valve cavity is reduced, the exhaust valve exhaust port 9 is opened, and since the external atmospheric pressure is greater than the system pressure, external gas can enter the pump system through the exhaust valve exhaust port 9, in order to prevent negative pressure damage, the valve cap 11 on the exhaust valve body is screwed down, and the exhaust valve 7 stops exhausting. Normally, the bonnet 11 should be in an open state.
The utility model has simple structure and safe and convenient operation, and can discharge the gas accumulated in the pump body in time. Compared with manual exhaust, the automatic exhaust device is easy to maintain, the exhaust nut 8 cannot pop up to hurt people or fall off due to squeezing of water pressure, and the safety of maintenance operation is improved. Meanwhile, the automatic exhaust of the pump system also improves the working efficiency of the vertical multistage centrifugal pump, and the safe operation of the pump system is ensured.
The above-described embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be applied, and it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the inventive concept of the present invention, and these embodiments are within the scope of the present invention.
Claims (3)
1. The utility model provides an automatic exhaust apparatus of vertical multistage centrifugal pump which characterized in that: include tubular metal resonator (3) and fixed block (6) of setting on tubular metal resonator (3) of being connected with last gas vent (1) of multistage centrifugal pump, the entry and the exit of tubular metal resonator (3) are provided with cutting ferrule joint (2) and discharge valve (7) down respectively, discharge valve (7) be buoy type automatic exhaust valve, still be provided with last cutting ferrule joint (4) that are located fixed block (6) below on tubular metal resonator (3), last cutting ferrule joint (4) and discharge valve (7) all through screw adapter (5) and fixed block (6) swing joint.
2. The automatic exhaust device of a vertical multistage centrifugal pump according to claim 1, wherein the lower end of the exhaust valve (7) is screwed with the screw adapter (5) through a screw thread.
3. The automatic exhaust device of a vertical multistage centrifugal pump according to claim 1, wherein the exhaust valve (7) is connected with the upper end of the metal pipe (3) through an upper ferrule fitting (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123099692.4U CN216518663U (en) | 2021-12-10 | 2021-12-10 | Automatic exhaust device of vertical multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123099692.4U CN216518663U (en) | 2021-12-10 | 2021-12-10 | Automatic exhaust device of vertical multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216518663U true CN216518663U (en) | 2022-05-13 |
Family
ID=81469721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123099692.4U Active CN216518663U (en) | 2021-12-10 | 2021-12-10 | Automatic exhaust device of vertical multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216518663U (en) |
-
2021
- 2021-12-10 CN CN202123099692.4U patent/CN216518663U/en active Active
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