CN111005858A - Suction valve for pump - Google Patents
Suction valve for pump Download PDFInfo
- Publication number
- CN111005858A CN111005858A CN201911312233.4A CN201911312233A CN111005858A CN 111005858 A CN111005858 A CN 111005858A CN 201911312233 A CN201911312233 A CN 201911312233A CN 111005858 A CN111005858 A CN 111005858A
- Authority
- CN
- China
- Prior art keywords
- valve
- guide rod
- valve body
- sealing guide
- annular
- 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K21/00—Fluid-delivery valves, e.g. self-closing valves
- F16K21/04—Self-closing valves, i.e. closing automatically after operation
- F16K21/16—Self-closing valves, i.e. closing automatically after operation closing after a predetermined quantity of fluid has been delivered
Abstract
The invention relates to a suction valve for a pump, which solves the problems that a matched valve of the existing vacuum pump is complex in operation, high in cost, easy to break down, small in application range and capable of influencing using equipment; the base is provided with an air inlet and a flow passage; the valve body is arranged above the base and is of a cylinder structure, the side wall of the valve body is provided with an air outlet, a plurality of supporting plates are arranged in the sleeve cavity, and a through hole is formed in the sleeve bottom plate; the valve cover is arranged above the valve body, and the end surface of the valve cover is provided with an air hole; the sealing guide rod is arranged in the cavity of the valve body, and the bottom end of the sealing guide rod is matched with the elastic valve seat; the rubber diaphragm, the diaphragm gasket, the wave spring and the spring support are sequentially sleeved on the sealing guide rod from top to bottom; the outer periphery of the rubber diaphragm is fixedly arranged between the valve body and the valve cover; the spring support is mounted above the support plate.
Description
Technical Field
The invention relates to an air suction valve, in particular to an air suction valve for a pump.
Background
Centrifugal pumps generally need to be started by water inflow, because the water inflow pressure is insufficient, a vacuum pump needs to be used for vacuumizing before starting, and valves matched with the vacuum pump are generally electromagnetic valves, pneumatic valves or manual valves and the like.
If the matched valve is an electromagnetic valve, the electromagnetic valve needs to be provided with a power supply, a sensor or a pressure switch, and a control system needs to be arranged when the electromagnetic valve is matched with the sensor, so that the mode is complex in operation, high in cost, long in control chain and easy to increase fault points; when the cooperation pressure switch uses, before water draws and comes to reach pressure switch's threshold value, can pour into the vacuum pump with the water that introduces, if the vacuum pump intake is many, can cause the vacuum pump rotating resistance too big, the condition of transshipping appears, and then produces the influence to motor life. In addition, the control cable of the solenoid valve is easily loosened by long-term vibration, so that reliability thereof is deteriorated.
If the matched valve is a pneumatic valve, the pneumatic valve needs to be provided with an air source and a pressure switch, and some use sites do not have the air source, so the applicability is not strong, and the use range is smaller.
If the matched valve is a manual valve, the manual valve needs manual operation, and water can be poured into the vacuum pump when the operation action is too slow, so that the use of the vacuum pump is influenced, and therefore, the mode has high requirement on operators and causes waste of human resources.
Disclosure of Invention
The invention aims to solve the problems that a matched valve of the existing vacuum pump is complex in operation, high in cost, easy to break down, small in application range and capable of influencing using equipment, and provides a suction valve for a pump, which is simple in structure, convenient to use and high in practicability.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a suction valve for a pump comprises a base, a valve body, a valve cover, a sealing guide rod, an elastic valve seat, a rubber diaphragm, a wave spring, a diaphragm gasket and a spring support; the base is provided with an air inlet and a flow passage communicated with the air inlet; the valve body is arranged above the base and is of a cylinder structure, the side wall of the valve body is provided with an air outlet communicated with the sleeve cavity, a plurality of supporting plates are arranged in the sleeve cavity, and the sleeve bottom plate is provided with a through hole communicated with the sleeve cavity and the overflowing channel; the valve cover is arranged above the valve body to seal the cavity of the sleeve, and the end face of the valve cover is provided with an air hole; the sealing guide rod is arranged in the cavity of the valve body, the bottom end of the sealing guide rod extends out of the through hole of the bottom plate of the cylinder body and is matched with the elastic valve seat arranged between the base and the valve body to realize the blocking of fluid; the top end of the sealing guide rod extends out of the air hole of the valve cover; the rubber diaphragm, the diaphragm gasket, the wave spring and the spring support are sequentially sleeved on the sealing guide rod from top to bottom; the outer periphery of the rubber diaphragm is fixedly arranged between the valve body and the valve cover; the spring support is arranged above the support plate, and the support plate supports the spring support; the top end of the wave spring is limited through the diaphragm gasket, and the bottom end of the wave spring is limited through the spring support.
Furthermore, a thrust pad is sleeved on the sealing guide rod and used for limiting the downward displacement of the sealing guide rod.
Further, the bottom surface of the elastic valve seat is provided with an annular bulge and an annular groove; the annular protrusion is matched with the bottom end of the sealing guide rod to realize sealing, and the annular groove is matched with the upper end face of the base to realize sealing.
Further, the bottom of sealed guide arm sets up to sealed boss and the toper pole that is connected, sealed boss is located the cavity of base, the toper pole sets up in the through-hole of valve body barrel bottom plate.
Furthermore, the through hole of the bottom plate of the cylinder body is a tapered hole matched with the tapered rod and used for realizing the guiding and slow circulation of the fluid.
Furthermore, the air inlets of the base are multiple and communicated with the overflowing channel.
Further, be provided with annular installation arch on the outer periphery of rubber diaphragm, the top of valve body is provided with annular mounting groove, annular installation arch is installed in annular mounting groove for prevent that rubber diaphragm from droing.
Furthermore, an annular positioning groove is formed in the upper end face of the spring support, and the lower end of the wave spring is installed in the annular positioning groove.
Furthermore, a screw is fixedly arranged at the top end of the sealing guide rod and is installed in an air hole of the valve cover.
Further, a sealing gasket is arranged between the screw and the sealing guide rod.
Compared with the prior art, the invention has the following advantages:
1. the air suction valve provided by the invention has the advantages of simple structure, small volume, very high reliability and capability of realizing the starting and stopping of vacuumizing in a mechanical mode.
2. The air suction valve provided by the invention is convenient to install, low in cost and wide in application range, and can be used for all systems for pumping vacuum by a centrifugal pump.
3. When the air suction valve provided by the invention is used in a matching way with a vacuum pump, the vacuum pump can be protected, and water is prevented from being poured into the vacuum pump, so that the phenomenon that the vacuum pump has overlarge rotation resistance and cannot influence the use of the vacuum pump is avoided.
Drawings
FIG. 1 is a cross-sectional view of a suction valve for a pump according to the present invention;
FIG. 2 is a schematic view of the construction of the suction valve base for the pump of the present invention;
FIG. 3 is a schematic structural view of a suction valve body for a pump according to the present invention;
FIG. 4 is a schematic view of the sealing guide rod of the suction valve for a pump according to the present invention;
fig. 5 is a schematic structural view of an elastic valve seat of a suction valve for a pump according to the present invention.
Reference numerals: 1-base, 2-valve body, 3-valve cover, 4-sealing guide rod, 5-elastic valve seat, 6-rubber diaphragm, 7-wave spring, 8-diaphragm gasket, 9-spring support, 10-thrust pad, 11-screw, 12-sealing pad, 101-air inlet, 102-overflowing channel, 21-air outlet, 22-supporting plate, 23-through hole, 24-annular mounting groove, 31-air hole, 41-sealing boss, 42-conical rod, 51-annular bulge, 52-annular groove, 61-annular mounting bulge and 91-annular positioning groove.
Detailed Description
The technical scheme and technical effect of the invention are further illustrated by the following examples.
The suction valve for the pump can be applied to the inlet of the pump or other places needing vacuum pumping, when the vacuum pumping is carried out, the suction valve is automatically opened, air in the inner cavity of the pump system is pumped out to form vacuum, water is introduced into the pump cavity, and after the vacuum operation is finished, the suction valve is automatically closed.
As shown in fig. 1 to 5, the suction valve for a pump according to the present invention includes a base 1, a valve body 2, a valve cover 3, a seal guide 4, an elastic valve seat 5, a rubber diaphragm 6, a wave spring 7, a diaphragm gasket 8, and a spring support 9.
The base 1 is provided with an air inlet 101 and a flow passage 102 communicated with the air inlet 101; the valve body 2 is arranged above the base 1 and is of a cylinder structure, the side wall of the valve body is provided with an air outlet 21 communicated with the cavity of the sleeve, a plurality of supporting plates 22 are arranged in the cavity of the valve body, and a through hole 23 is arranged on the bottom plate of the cylinder; the valve cover 3 is arranged above the valve body 2 to seal the cavity of the sleeve, and the end face of the valve cover is provided with an air hole 31.
The sealing guide rod 4 is arranged in the cavity of the valve body 2, the bottom end of the sealing guide rod extends out of the through hole 23 of the bottom plate of the cylinder body and is matched with the elastic valve seat 5 arranged between the base 1 and the valve body 2 to realize the blocking of fluid; the top end of the sealing guide rod 4 extends out of the air hole 31 of the valve cover 3; alternatively, the top end of the seal guide rod 4 is fixedly provided with a screw 11, the screw 11 is installed in the air hole 31 of the valve cover 3, and a sealing gasket 12 is arranged between the screw 11 and the seal guide rod 4. In addition, the seal guide rod 4 is sleeved with a thrust pad 10 for limiting the downward displacement of the seal guide rod 4 and preventing the downward movement of the seal guide rod 4 from being too large.
The rubber diaphragm 6, the diaphragm gasket 8, the wave spring 7 and the spring support 9 are sequentially sleeved on the sealing guide rod 4 from top to bottom; the outer periphery of the rubber diaphragm 6 is fixedly arranged between the valve body 2 and the valve cover 3, specifically, an annular mounting protrusion 61 is arranged on the outer periphery of the rubber diaphragm 6, an annular mounting groove 24 is arranged at the top end of the valve body 2, and the annular mounting protrusion 61 is mounted in the annular mounting groove 24 and used for preventing the rubber diaphragm 6 from falling off; the spring support 9 is arranged above the support plate 22, and the support plate 22 supports the spring support; it is spacing that 8 are passed through to the diaphragm liner on wave spring 7's top, and it is spacing that 9 are passed through to the bottom, and is concrete, and 9 up ends of spring support are provided with annular positioning groove 91, and wave spring 7's bottom is installed in annular positioning groove 91.
As shown in fig. 2, a plurality of air inlets 101 of the base 1 are all communicated with the overflowing channel 102, and can be connected with a plurality of centrifugal pumps through pipelines, and the centrifugal pumps are vacuumized before being started.
As shown in fig. 3 and 4, the bottom end of the sealing guide rod 4 is provided with a sealing boss 41 and a tapered rod 42 which are connected, the sealing boss 41 is located in the cavity of the base 1, and the tapered rod 42 is arranged in the through hole 23 of the bottom plate of the cylinder. The through hole 23 of the bottom plate of the cylinder body of the valve body 2 is a tapered hole matched with the tapered rod 42 and used for realizing the guiding and slow circulation of fluid.
As shown in fig. 5, the bottom surface of the elastic valve seat 5 is provided with an annular projection 51 and an annular recess 52; the annular protrusion 51 is matched with the bottom end of the sealing guide rod 4 to realize sealing, and the annular groove 52 is matched with the upper end face of the base 1 to realize sealing.
When the suction valve for the pump is installed and used on site, the base 1 is installed at the inlet of the centrifugal pump, the air inlet 101 is communicated with the inlet cavity of the centrifugal pump, and the air outlet 21 is connected with the vacuum pump through a pipeline.
The working principle of the suction valve for the pump is as follows: the air suction valve is usually supported at a closed position by a spring, when the air outlet 21 is vacuumized to form negative pressure, the pressure at the top end of the sealing guide rod 4 is greater than the pressure inside the cavity of the air suction valve, under the action of atmospheric pressure, atmospheric pressure can enter the top of the valve and push the sealing gasket, the rubber diaphragm 6, the diaphragm liner 8, the wave spring 7 and the sealing guide rod 4 to move downwards, so that a gap is formed between the sealing guide rod 4 and the base 1, a through hole 23 between the sleeve cavity and the overflowing channel 102 is opened, a channel connected with the water pump is opened, the air outlet 21 can continuously pump air and introduce liquid, when the air outlet 21 introduces liquid and forms certain pressure, the liquid pushes the sealing guide rod 4, the sealing guide rod 4 and the valve body 2 are closed to form sealing, and.
Claims (10)
1. A suction valve for a pump, characterized in that: comprises a base (1), a valve body (2), a valve cover (3), a sealing guide rod (4), an elastic valve seat (5), a rubber diaphragm (6), a wave spring (7), a diaphragm gasket (8) and a spring support (9);
the base (1) is provided with an air inlet (101) and a flow passage (102) communicated with the air inlet (101);
the valve body (2) is arranged above the base (1) and is of a cylinder structure, the side wall of the valve body is provided with an air outlet (21) communicated with the sleeve cavity, the sleeve cavity is internally provided with a plurality of supporting plates (22), and the sleeve bottom plate is provided with a through hole (23) communicated with the sleeve cavity and the overflowing channel (102);
the valve cover (3) is arranged above the valve body (2) to seal the cavity of the sleeve, and the end surface of the valve cover is provided with an air hole (31);
the sealing guide rod (4) is arranged in the cavity of the valve body (2), the bottom end of the sealing guide rod extends out of the through hole (23) of the bottom plate of the cylinder body and is matched with the elastic valve seat (5) arranged between the base (1) and the valve body (2) to realize the blocking of fluid; the top end of the sealing guide rod (4) extends out of the air hole (31) of the valve cover (3);
the rubber diaphragm (6), the diaphragm gasket (8), the wave spring (7) and the spring support (9) are sequentially sleeved on the sealing guide rod (4) from top to bottom; the outer periphery of the rubber diaphragm (6) is fixedly arranged between the valve body (2) and the valve cover (3); the spring support (9) is arranged above the support plate (22), and the support plate (22) supports the spring support; the top end of the wave spring (7) is limited through a diaphragm gasket (8), and the bottom end of the wave spring is limited through a spring support (9).
2. The suction valve for a pump according to claim 1, wherein: the sealing guide rod (4) is sleeved with a thrust pad (10) for limiting the downward displacement of the sealing guide rod (4).
3. The suction valve for a pump according to claim 2, wherein: the bottom surface of the elastic valve seat (5) is provided with an annular bulge (51) and an annular groove (52); the annular protrusion (51) is matched with the bottom end of the sealing guide rod (4) to realize sealing, and the annular groove (52) is matched with the upper end face of the base (1) to realize sealing.
4. A suction valve for a pump according to claim 1, 2 or 3, characterized in that: the bottom of sealed guide arm (4) sets up to sealed boss (41) and toper pole (42) that are connected, sealed boss (41) are located the cavity of base (1), toper pole (42) set up in through-hole (23) of barrel bottom plate.
5. The suction valve for a pump according to claim 4, wherein: the through hole (23) of the cylinder bottom plate is a tapered hole matched with the tapered rod (42) and used for realizing the guiding and slow circulation of fluid.
6. The suction valve for a pump according to claim 5, wherein: a plurality of air inlets (101) of the base (1) are communicated with the overflowing channel (102).
7. The suction valve for a pump according to claim 6, wherein: be provided with protruding (61) of annular installation on the outer periphery of rubber diaphragm (6), the top of valve body (2) is provided with annular mounting groove (24), install in annular mounting groove (24) protruding (61) of annular installation, prevent that rubber diaphragm (6) from droing.
8. The suction valve for a pump according to claim 7, wherein: the spring support (9) is provided with annular positioning groove (91) on the up end, the lower extreme of wave spring (7) is installed in annular positioning groove (91).
9. The suction valve for a pump according to claim 8, wherein: the top end of the sealing guide rod (4) is fixedly provided with a screw (11), and the screw (11) is installed in an air hole (31) of the valve cover (3).
10. The suction valve for a pump according to claim 9, wherein: and a sealing gasket (12) is arranged between the screw (11) and the sealing guide rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312233.4A CN111005858A (en) | 2019-12-18 | 2019-12-18 | Suction valve for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312233.4A CN111005858A (en) | 2019-12-18 | 2019-12-18 | Suction valve for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111005858A true CN111005858A (en) | 2020-04-14 |
Family
ID=70116725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911312233.4A Pending CN111005858A (en) | 2019-12-18 | 2019-12-18 | Suction valve for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111005858A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096932A (en) * | 2020-09-11 | 2020-12-18 | 无锡文森特阀业有限公司 | Air suction water stop valve |
-
2019
- 2019-12-18 CN CN201911312233.4A patent/CN111005858A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096932A (en) * | 2020-09-11 | 2020-12-18 | 无锡文森特阀业有限公司 | Air suction water stop valve |
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