CN111997906A - Water-mounted bottom valve for centrifugal pump - Google Patents
Water-mounted bottom valve for centrifugal pump Download PDFInfo
- Publication number
- CN111997906A CN111997906A CN202011007173.8A CN202011007173A CN111997906A CN 111997906 A CN111997906 A CN 111997906A CN 202011007173 A CN202011007173 A CN 202011007173A CN 111997906 A CN111997906 A CN 111997906A
- Authority
- CN
- China
- Prior art keywords
- water
- water tank
- centrifugal pump
- pump according
- inlet pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 202
- 238000009434 installation Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/007—Preventing loss of prime, siphon breakers
- F04D9/008—Preventing loss of prime, siphon breakers by means in the suction mouth, e.g. foot valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an overwater installation type bottom valve for a centrifugal pump, which comprises a water tank, wherein a water inlet pipe is arranged in the water tank along the height direction of the water tank, one end of the water inlet pipe extends into the water tank, the other end of the water inlet pipe extends out of the bottom of the water tank, a water outlet pipe is arranged on one side of the bottom of the water tank, the lower end of the water tank is supported by a base, an air outlet is arranged at the top of the water tank, and a water outlet is arranged at the. The problem of the maintenance that current bottom valve exists inconvenient and awkward is solved.
Description
Technical Field
The invention belongs to the technical field of welding manufacturing, and relates to an overwater installation type bottom valve for a centrifugal pump.
Background
The bottom valve for the existing centrifugal pump has two standard bottom valves which are arranged below the water surface and above the water surface. When the bottom valve installed below the water surface breaks down, the water in the water tank needs to be emptied and then leaks out of the valve body, so that the maintenance can be carried out; the standard bottom valve installed above the water surface is easy to scale between the valve rod and the cylinder body to cause the valve rod to be blocked, and sewage is cleaned and water is injected before the water system is started each time; according to the production requirement, a bottom valve which is stable and reliable in operation and convenient to overhaul is needed.
Disclosure of Invention
The invention aims to provide an overwater installation type bottom valve for a centrifugal pump, which solves the problems that the existing underwater bottom valve is difficult to install at the bottom of a water tank for maintenance and a valve core at the bottom of the water tank is easy to scale and block.
The technical scheme includes that the water-mounted bottom valve for the centrifugal pump comprises a water tank, a water inlet pipe is arranged in the water tank along the height direction of the water tank, one end of the water inlet pipe extends into the water tank, the other end of the water inlet pipe extends out of the bottom of the water tank, a water outlet pipe is arranged on one side of the bottom of the water tank, the lower end of the water tank is supported by a base, an air exhaust port is formed in the top of the water tank, and a water outlet is formed in the bottom of the water tank.
The present invention is also characterized in that,
the front of the water tank is provided with an access hole.
A liquid level meter is arranged in the water tank.
The water tank has one of a rectangular parallelepiped, cylindrical or spherical structure.
One end of the water inlet pipe extending out of the water tank is connected with the upper end of a vertically arranged water suction pipe through a flange, and the lower end of the water suction pipe extends into the water tank; and a water outlet pipe of the water tank is connected with a water inlet of the water pump.
Storable in a water tankThe volume V of the water volume is larger than that of the water suction pipe1Volume V of water inlet pipe2And (4) summing.
Diameter D of the outlet pipe1Is more than or equal to the diameter D of the water inlet of the water pump, the diameter D of the water inlet pipe2Diameter D of water outlet pipe1The dimensions are the same.
The distance H between the upper end of the water inlet pipe and the top of the water tank and the diameter D of the water inlet pipe2The same is true.
The water tank is formed by welding steel plates, the thickness of each steel plate is not less than 10mm, and the water inlet pipe and the water outlet pipe are thick-wall seamless pipes with the thickness of more than 10 mm.
And (3) carrying out a leakage test and a vacuum test after the water tank is processed, wherein the pressure of the vacuum test of the water tank is not less than 1.6MPa, the duration is 30 minutes, and the pressure drop is not more than 0.1MPa, so that the water tank is qualified.
The water-mounted bottom valve for the centrifugal pump has the advantages that the front side of the water tank is provided with the access hole, so that the access is convenient to maintain, in addition, water is injected into the bottom valve and the water pump before the water pump is started, and the height of the water level in the water tank of the bottom valve is consistent with the height of the water inlet pipe extending into the water tank; when the water pump is started to operate, the water in the water pool is sucked into the water tank through the water inlet pipe and the water suction pipe by overcoming the atmospheric pressure, then enters the water pump, and is discharged from the water outlet of the water pump. The bottom valve provided by the invention is the best substitute product for the bottom valve below the water surface and the water-borne bottom valve at present.
Drawings
FIG. 1 is a schematic structural view of an above-water-mounted foot valve for a centrifugal pump of the present invention;
FIG. 2 is a schematic of the construction of the water mounted foot valve for a centrifugal pump of the present invention in connection with a sump and pump.
In the figure, 1, a water tank, 2, a water inlet pipe, 3, a water outlet pipe, 4, an exhaust port, 5, a water outlet, 6, an access port, 7, a liquid level meter, 8, a base support, 9, a water tank, 10, a water pump and 11, a water suction pipe.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention discloses an overwater installation type bottom valve for a centrifugal pump, which comprises a water tank 1, wherein a water inlet pipe 2 is arranged in the water tank 1 along the height direction of the water tank, one end of the water inlet pipe 2 extends into the water tank 1, the other end of the water inlet pipe 2 extends out of the bottom of the water tank 1, a water outlet pipe 3 is arranged on one side of the bottom of the water tank 1, the lower end of the water tank 1 is supported 8 by a base, an air outlet 4 is arranged at the top of the water tank 1, and a water outlet 5 is arranged at the bottom of the water.
The front of the water tank 1 is provided with an access hole 6.
A liquid level meter 7 is arranged in the water tank 1.
The water tank 1 has one of a rectangular parallelepiped, cylindrical or spherical structure.
As shown in fig. 2, one end of the water inlet pipe 2 extending out of the water tank is connected with the upper end of a vertically arranged water suction pipe 11 through a flange, and the lower end of the water suction pipe 11 extends into the water tank 9; the water outlet pipe 3 is connected with the water inlet of the water pump 10.
The volume V of the water volume which can be stored in the water tank 1 is larger than the volume V of the suction pipe 111Volume V of water inlet pipe 22And (4) summing.
Diameter D of the outlet pipe 31Is more than or equal to the diameter D of the water inlet of the water pump 10 and the diameter D of the water inlet pipe 22With the diameter D of 3 of the water outlet pipe1The dimensions are the same.
The distance H between the upper end of the water inlet pipe 2 and the top of the water tank 1 and the diameter D of the water inlet pipe2The same is true.
The water tank 1 is formed by welding steel plates, and the thickness of each steel plate is not less than 10 mm.
The water inlet pipe 2 and the water outlet pipe 3 are thick-wall seamless pipes with the thickness of more than 10 mm. The inner and outer welding seams are continuously welded.
After the water tank 1 is processed, a leakage test and a vacuum test are performed. The pressure of the water tank vacuum degree test is not less than 1.6MPa, the duration is 30 minutes, and the pressure drop is not more than 0.1MPa, so that the product is qualified.
The use method of the water-mounted bottom valve for the centrifugal pump comprises the following steps that one end of a water outlet pipe 3 is connected with a water inlet of a water pump 10, and one end of a water inlet pipe 2 is connected with a water suction pipe 11 of a water pool 9. Before the water pump 10 is started, water is injected into the bottom valve and the water pump 10, and the height of the water level in the water tank 1 of the bottom valve is consistent with the height of the water inlet pipe 2 extending into the water tank 1; when the water pump 10 is started to operate, water in the water tank 9 is sucked into the water tank 1 through the water inlet pipe 2 and the water suction pipe 11 by overcoming atmospheric pressure, then enters the water pump 10, and is discharged from a water outlet of the water pump 10. The bottom valve has the advantages of reasonable design, advanced manufacturing process and convenient installation, use and maintenance, and is the best substitute product for the bottom valve below the water surface and the water-borne bottom valve at present.
Claims (10)
1. A installation formula bottom valve on water for centrifugal pump which characterized in that: including the water tank, the inside of water tank is equipped with the inlet tube along the direction of height of water tank, and in the one end of inlet tube stretched into the water tank, the other end of inlet tube stretched out from the bottom of water tank, and bottom one side of water tank is equipped with the outlet pipe, and the lower extreme of water tank passes through the base and supports, and the top of water tank is equipped with the gas vent, and the bottom of water tank is equipped with the outlet.
2. A water mounted foot valve for a centrifugal pump according to claim 1, wherein: and the front side of the water tank is provided with an access hole.
3. A water mounted foot valve for a centrifugal pump according to claim 1, wherein: a liquid level meter is arranged in the water tank.
4. A water mounted foot valve for a centrifugal pump according to claim 1, wherein: the water tank is in one of a rectangular parallelepiped, cylindrical or spherical structure.
5. A water mounted foot valve for a centrifugal pump according to claim 1, wherein: one end of the water inlet pipe, which extends out of the water tank, is connected with the upper end of a vertically arranged water suction pipe through a flange, and the lower end of the water suction pipe extends into the water tank; and a water outlet pipe of the water tank is connected with a water inlet of the water pump.
6. An above-water-mounted foot valve for a centrifugal pump according to claim 5, wherein: what is needed isThe volume V of the water quantity which can be stored in the water tank is larger than the volume V of the water suction pipe1Volume V of water inlet pipe2And (4) summing.
7. An above-water-mounted foot valve for a centrifugal pump according to claim 5, wherein: diameter D of the water outlet pipe1Is more than or equal to the diameter D of the water inlet of the water pump, the diameter D of the water inlet pipe2Diameter D of water outlet pipe1The dimensions are the same.
8. A water mounted foot valve for a centrifugal pump according to claim 7, wherein: distance H between upper end of water inlet pipe and top of water tank and diameter D of water inlet pipe2The same is true.
9. A water mounted foot valve for a centrifugal pump according to claim 1, wherein: the water tank is formed by welding steel plates, and the thickness of each steel plate is not less than 10 mm; the water inlet pipe and the water outlet pipe are thick-wall seamless pipes with the thickness of more than 10 mm.
10. A water mounted foot valve for a centrifugal pump according to claim 1, wherein: and after the water tank is processed, a leakage test and a vacuum test are carried out, wherein the pressure of the vacuum test of the water tank is not less than 1.6MPa, the duration is 30 minutes, and the pressure drop is not more than 0.1MPa, so that the water tank is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011007173.8A CN111997906A (en) | 2020-09-23 | 2020-09-23 | Water-mounted bottom valve for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011007173.8A CN111997906A (en) | 2020-09-23 | 2020-09-23 | Water-mounted bottom valve for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111997906A true CN111997906A (en) | 2020-11-27 |
Family
ID=73475391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011007173.8A Pending CN111997906A (en) | 2020-09-23 | 2020-09-23 | Water-mounted bottom valve for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111997906A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2040178U (en) * | 1988-11-11 | 1989-06-28 | 雷恩义 | Water pump without bottom valve |
| CN1594887A (en) * | 2004-06-28 | 2005-03-16 | 龚寿奇 | Water self-priming apparatus for water pumps |
| CN204357714U (en) * | 2014-12-30 | 2015-05-27 | 山东泰丰钢业有限公司 | A kind of novel production high-frequency straight seam welded pipe water storing device |
| CN109162930A (en) * | 2018-11-16 | 2019-01-08 | 十堰丰凯机电工程有限公司 | A kind of paint spray booth's water supply self-priming apparatus |
| CN210769475U (en) * | 2019-10-16 | 2020-06-16 | 广西侨旺纸模制品股份有限公司 | Water diversion tank mounted in front of pump |
| CN212407050U (en) * | 2020-09-23 | 2021-01-26 | 宝鸡石油钢管有限责任公司连续油管分公司 | Welding type water bottom valve for centrifugal pump |
-
2020
- 2020-09-23 CN CN202011007173.8A patent/CN111997906A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2040178U (en) * | 1988-11-11 | 1989-06-28 | 雷恩义 | Water pump without bottom valve |
| CN1594887A (en) * | 2004-06-28 | 2005-03-16 | 龚寿奇 | Water self-priming apparatus for water pumps |
| CN204357714U (en) * | 2014-12-30 | 2015-05-27 | 山东泰丰钢业有限公司 | A kind of novel production high-frequency straight seam welded pipe water storing device |
| CN109162930A (en) * | 2018-11-16 | 2019-01-08 | 十堰丰凯机电工程有限公司 | A kind of paint spray booth's water supply self-priming apparatus |
| CN210769475U (en) * | 2019-10-16 | 2020-06-16 | 广西侨旺纸模制品股份有限公司 | Water diversion tank mounted in front of pump |
| CN212407050U (en) * | 2020-09-23 | 2021-01-26 | 宝鸡石油钢管有限责任公司连续油管分公司 | Welding type water bottom valve for centrifugal pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212407050U (en) | Welding type water bottom valve for centrifugal pump | |
| CN111997906A (en) | Water-mounted bottom valve for centrifugal pump | |
| CN211189165U (en) | Vacuum buffer absorption device | |
| CN218371833U (en) | Novel tower-free rotary membrane tube type deaerator | |
| CN212954393U (en) | Vacuum deaerator | |
| CN210853745U (en) | Vacuum automatic liquid discharge tank | |
| CN110748507B (en) | Drainage device and method using compressed air and siphon drainage in cooperation | |
| CN201343271Y (en) | Air-bag type pressure control device for underground oil storage tank in refueling station | |
| CN211902344U (en) | Energy-efficient sealed steam trap | |
| CN220251284U (en) | Pneumatic actuator air tightness detector | |
| CN201606548U (en) | Aerating and exhausting check valve device of a tank storing cyclopentane raw materials | |
| CN220215418U (en) | Water spraying system for milk glass bottle leakage detection | |
| CN219608637U (en) | Liquid nitrogen loading system | |
| CN211143183U (en) | Water outlet device for safety comprehensive water tank | |
| CN220826870U (en) | Water diversion device for pipeline drainage | |
| CN219033391U (en) | Integrated pump station with water distribution system | |
| CN2762131Y (en) | Liquid coupling medium supply device of ultrasonic detection instrument | |
| CN218808011U (en) | Novel double-layer buried storage tank | |
| CN217128993U (en) | Frock that vacuum pump buffering was used is in prestressing force grout | |
| CN219341764U (en) | Pumping and filling device for diaphragm pressure gauge | |
| CN215367713U (en) | Vacuum drainage gas control device | |
| CN218725043U (en) | Condenser leakproofness detection device | |
| CN219714681U (en) | Stainless steel coil tube airtight detection device | |
| CN215053533U (en) | Water-ring vacuum pump circulating water supply device | |
| CN216045622U (en) | Top-reducing gas-liquid sealed tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |