CN211852177U - Electric vacuum pump diversion system for pump - Google Patents

Abstract

The utility model relates to an electric vacuum pump diversion system for pump solves current centrifugal pump and intakes in the start, and piston diversion pump volume is great and do not have the commonality, and the supporting valve complex operation of vacuum pump, with high costs, break down easily, application range is less and produce the problem of influence to the user equipment. The system comprises a vacuum pump, a motor, an air suction valve and a lubricating oil tank; the motor is connected with the vacuum pump to drive the vacuum pump to work, an outlet of the vacuum pump is connected with the suction valve through a pipeline, and the lubricating oil tank provides lubricating oil for the vacuum pump through a pipeline; the utility model provides an with advantages such as electric vacuum pump diversion system have fast from inhaling, the operation is reliable, compact structure, small, light in weight, easy maintenance, long service life.

Description

Electric vacuum pump diversion system for pump

Technical Field

The utility model relates to a pump diversion system, concretely relates to electric vacuum pump diversion system for pump.

Background

At present, centrifugal pumps generally need to be started by water inflow, the water inflow starting of most of centrifugal pumps is realized through a piston priming pump, however, the piston priming pump needs to obtain power from a gear box, the size of the piston priming pump is large, the piston priming pump needs to be specially designed, and the piston priming pump can be matched with the gear box for use, and therefore the mode is not universal.

The centrifugal pump can also realize water inlet starting by vacuumizing through a vacuum pump, 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. 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.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving current centrifugal pump and intaking and starting in, piston diversion pump is bulky and do not have the commonality, and the supporting valve complex operation of vacuum pump, with high costs, easy break down, application range are less and to the problem that produces the influence to the user equipment, provide an electric vacuum pump diversion system for pump, this electric vacuum pump diversion system for pump simple structure, convenient to use, practicality are strong.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a water diversion system of an electric vacuum pump for a pump comprises a vacuum pump, a motor, an air suction valve and a lubricating oil tank; the motor is connected with the vacuum pump to drive the vacuum pump to work, an outlet of the vacuum pump is connected with the suction valve through a pipeline, and the lubricating oil tank provides lubricating oil for the vacuum pump through a pipeline; the air suction valve 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 check valve is arranged on a pipeline connecting the lubricating oil tank and the vacuum pump.

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, 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, 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, the air inlets of the base are multiple and communicated with the overflowing channel.

Furthermore, a screw is fixedly arranged at the top end of the sealing guide rod, the screw is installed in an air hole of the valve cover, and a sealing gasket is arranged between the screw and the sealing guide rod.

Compared with the prior art, the utility model has the advantages of as follows and beneficial effect:

1. the utility model provides an electric vacuum pump diversion system for pump has fast from inhaling, operation reliable, compact structure, small, light in weight, easy advantage such as maintain, long service life.

2. The utility model provides a need not to combine the water pump when diversion of pump electric vacuum pump diversion system, the condition of anhydrous dry grinding when can avoiding the water pump diversion, the effectual water pump that has protected has prolonged the life-span of water pump.

3. The utility model provides a diversion system of electric vacuum pump for pump can the diversion before the water pump joint, the water pump that has significantly reduced goes out the water time, has won the valuable time for putting out a fire fast.

4. The utility model provides an electric vacuum pump diversion system for pump need not to install other power supplies, just can reliably use as long as the power supply.

5. The utility model discloses the suction valve in the system simple structure, small realizes opening and stopping of evacuation through mechanical form, and the reliability is very high, and in addition, this suction valve simple to operate, low cost, application scope are wide, can be used for on all centrifugal pump evacuation's the system.

6. The utility model discloses when the suction valve in the system used with the vacuum pump is supporting, can protect the vacuum pump, avoid irritating the vacuum pump with water to avoid vacuum pump rotating resistance too big, can not exert an influence to the use of vacuum pump.

Drawings

FIG. 1 is a drawing of a water diversion system of an electric vacuum pump for a pump according to the present invention;

FIG. 2 is a cross-sectional view of an inhalation valve in the system of the present invention;

FIG. 3 is a schematic structural view of a suction valve base in the system of the present invention;

FIG. 4 is a schematic structural view of a suction valve body in the system of the present invention;

FIG. 5 is a schematic view of a sealing guide rod of an air suction valve in the system of the present invention;

fig. 6 is a schematic structural view of the suction valve elastic valve seat in the system of the present invention.

Reference numerals: 1-vacuum pump, 2-motor, 3-suction valve, 4-lubricating oil tank, 5-check valve, 31-base, 32-valve body, 33-valve cover, 34-sealing guide rod, 35-elastic valve seat, 36-rubber diaphragm, 37-wave spring, 38-diaphragm gasket, 39-spring support, 310-thrust pad, 311-screw, 312-sealing pad, 313-air inlet, 314-overflowing channel, 321-air outlet, 322-supporting plate, 323-through hole, 324-annular mounting groove, 331-air hole, 341-sealing boss, 342-conical rod, 351-annular protrusion, 352-annular groove, 361-annular mounting protrusion and 391-annular positioning groove.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

As shown in fig. 1, the electric vacuum pump priming system for a pump provided by the utility model comprises a vacuum pump 1, a motor 2, an air suction valve 3 and a lubricating oil tank 4; motor 2 is connected with vacuum pump 1, drives its work, and vacuum pump 1's export is passed through the pipeline and is connected with suction valve 3, and suction valve 3 installs on the import pipeline of centrifugal pump or other places that need the evacuation, and lubricating-oil tank 4 provides lubricating oil for vacuum pump 1 through the pipeline, and is provided with check valve 5 on the pipeline that lubricating-oil tank 4 and vacuum pump 1 are connected. When the centrifugal pump is started, the vacuum pump 1 works, so that the air outlet of the air suction valve 3 generates negative pressure, the air suction valve 3 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 air suction valve 3 is automatically closed.

As shown in fig. 2 to 5, the suction valve 3 of the present invention includes a base 31, a valve body 32, a valve cover 33, a seal guide 34, an elastic valve seat 35, a rubber diaphragm 36, a wave spring 37, a diaphragm gasket 38, and a spring support 39. The base 31 is provided with an air inlet 313 and a flow passage 314 communicated with the air inlet 313; the base 31 is arranged at the inlet of the centrifugal pump, the air inlet 313 is communicated with the cavity of the inlet of the centrifugal pump, the valve body 32 is arranged above the base 31 and is of a cylinder structure, the side wall of the valve body is provided with an air outlet 321 communicated with the sleeve cavity, the air outlet 321 is communicated with the vacuum pump 1, a plurality of supporting plates 322 are arranged in the cavity of the valve body 32, and the bottom plate of the cylinder body is provided with a through hole 323; the bonnet 33 is disposed above the valve body 32 to close the cavity of the sleeve, and has an air hole 331 formed in an end surface thereof. The sealing guide rod 34 is arranged in the cavity of the valve body 32, the bottom end of the sealing guide rod extends out of the through hole 323 of the bottom plate of the cylinder body and is matched with the elastic valve seat 35 arranged between the base 31 and the valve body 32 to realize the blocking of fluid; the top end of the seal guide rod 34 extends out of the air hole 331 of the valve cover 33, or the top end of the seal guide rod 34 is fixedly provided with a screw 311, the screw 311 is installed in the air hole 331 of the valve cover 33, and a sealing gasket 312 is arranged between the screw 311 and the seal guide rod 34. In addition, the seal guide 34 is sleeved with a thrust pad 310 for limiting the downward displacement of the seal guide 34 and preventing the seal guide 34 from moving too much downward.

The rubber diaphragm 36, the diaphragm gasket 38, the wave spring 37 and the spring support 39 are sequentially sleeved on the sealing guide rod 34 from top to bottom; the outer periphery of the rubber diaphragm 36 is fixedly arranged between the valve body 32 and the valve cover 33, specifically, an annular mounting protrusion 361 is arranged on the outer periphery of the rubber diaphragm 36, an annular mounting groove 324 is arranged at the top end of the valve body 32, and the annular mounting protrusion 361 is mounted in the annular mounting groove 324 and used for preventing the rubber diaphragm 36 from falling off; the spring support 39 is mounted above the support plate 322, and the support plate 322 supports the spring support; the top end of the wave spring 37 is limited by the diaphragm gasket 38, the bottom end of the wave spring is limited by the spring support 39, specifically, the upper end surface of the spring support 39 is provided with an annular positioning groove 391, and the bottom end of the wave spring 37 is installed in the annular positioning groove 391.

As shown in fig. 3, a plurality of air inlets 313 of the base 31 are all communicated with the overflowing channel 314, 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. 4 and 5, the bottom end of the seal guide rod 34 is provided with a seal boss 341 and a tapered rod 342, which are connected, the seal boss 341 is located in the cavity of the base 31, and the tapered rod 342 is arranged in the through hole 323 of the bottom plate of the cylinder body of the valve body 32. The through hole 323 of the bottom plate of the cylinder body is a tapered hole matched with the tapered rod 342 and used for realizing the guiding and slow circulation of fluid. As shown in fig. 6, the bottom surface of the elastic valve seat 35 is provided with an annular projection 351 and an annular groove 352; the annular protrusion 351 is matched with the bottom end of the seal guide rod 34 to realize sealing, and the annular groove 352 is matched with the upper end face of the base 31 to realize sealing.

The utility model discloses the theory of operation of suction valve: the air suction valve 3 is normally supported at a closed position by a spring, when the air outlet 321 is vacuumized to form negative pressure, the atmospheric pressure at the top end of the sealing guide rod 34 is greater than the pressure inside the cavity of the air suction valve 3, under the action of the atmospheric pressure, the atmospheric pressure can enter the top of the valve and push the sealing gasket 312, the rubber diaphragm 36, the diaphragm gasket 38, the wave spring 37 and the sealing guide rod 34 to move downwards, so that a gap is formed between the sealing guide rod 34 and the base 31, a through hole 323 between the sleeve cavity and the overflowing channel 314 is opened, a channel connected with a water pump is opened, the air outlet 321 can continuously pump air and introduce liquid, when the air outlet 321 introduces liquid and forms certain pressure, the liquid pushes the sealing guide rod 34, the sealing guide rod 34 and the valve body 32 are closed to form sealing.

The utility model discloses the vacuum pump of system is furnished with lubricating system, according to the higher characteristics of rotating part speed, the lubrication form that the vacuum pump adopted is for the lubrication of supplying oil for the continuous of rotor and gleitbretter, because rotor and gleitbretter can form the negative pressure in the pipeline through high-speed rotation, so lubricating oil in the oil tank is inhaled in the vacuum pump after the vacuum pump work, thereby realize the lubrication form for the continuous oil supply, need often inspect 4 oil levels of lubricating-oil tank of vacuum pump 1 simultaneously, avoid dry friction thereby influence vacuum pump 1 performance; in order to avoid the siphon phenomenon of the lubricating oil after the vacuum pump 1 stops working, the ventilation hole on the lubricating oil tank 4 cover must ensure smoothness.

The utility model discloses the use of system is as follows: 1) connecting a water suction pipe and closing each valve on the water suction pipeline to prevent air leakage; 2) pressing down a water diversion switch button, vacuumizing and conducting water diversion; 3) after water diversion is finished, loosening a water diversion switch button, and stopping the vacuum pump; (if water cannot be successfully introduced into the water pump twice in succession, the operation of the vacuum pump is stopped, the sealing state of the whole water suction pipeline needs to be checked, the vacuum pump 1 can be operated again after leakage points are eliminated, and the operation of the vacuum pump needs to be separated by 3 minutes every time, so that the overheating of a motor of the vacuum pump is avoided); 4) engaging a water pump; 5) the rotating speed is improved, and the rated working condition of the water pump is achieved for fire fighting.

All valves in the system connected to the pump are checked and closed before the water pump begins to draw water. If the outlet of the water pump is sealed by a one-way valve, the main outlet valve need not be closed. Pressing the drain switch button closes the circuit to start the motor 2 to begin pumping vacuum. The suction valve 3 is normally supported in the closed position by a spring, and when the vacuum pump 1 is started, a low-pressure space is generated in the valve, atmospheric pressure enters the top of the valve and pushes the diaphragm downwards, the spring is compressed and a channel connected with the water pump is opened, so that the vacuum pump 1 starts to vacuumize and guide water to the water inlet of the water pump. After the diversion is finished, the diversion switch is loosened to turn off the motor 2, the vacuum pump 1 stops working, air returns to the valve, so that the pressure of the inside and outside atmosphere is consistent, the spring is reset, and a connecting channel between the valve and the water pump is closed. If water is not led out from the outlet of the vacuum pump 1 in the corresponding water leading time, the vacuum pump 1 needs to be shut down, whether the system pipeline is air-leaked or not is checked, and the lubricating oil tank 4 is ensured to normally supply lubricating oil to the vacuum pump 1.

Claims (10)

1. The utility model provides a pump is with electric vacuum pump diversion system which characterized in that: comprises a vacuum pump (1), a motor (2), an air suction valve (3) and a lubricating oil tank (4);

the motor (2) is connected with the vacuum pump (1) to drive the vacuum pump (1) to work, an outlet of the vacuum pump (1) is connected with the suction valve (3) through a pipeline, and the lubricating oil tank (4) provides lubricating oil for the vacuum pump (1) through a pipeline;

the air suction valve (3) comprises a base (31), a valve body (32), a valve cover (33), a sealing guide rod (34), an elastic valve seat (35), a rubber diaphragm (36), a wave spring (37), a diaphragm gasket (38) and a spring support (39); the base (31) is provided with an air inlet (313) and a flow passage (314) communicated with the air inlet (313); the valve body (32) is arranged above the base (31) and is of a cylinder structure, the side wall of the valve body is provided with an air outlet (321) communicated with the sleeve cavity, the sleeve cavity is internally provided with a plurality of supporting plates (322), and the sleeve bottom plate is provided with a through hole (323) communicated with the sleeve cavity and the overflowing channel (314); the valve cover (33) is arranged above the valve body (32) to seal the cavity of the sleeve, and an air hole (331) is formed in the end face of the valve cover;

the sealing guide rod (34) is arranged in the cavity of the valve body (32), the bottom end of the sealing guide rod extends out of the through hole (323) of the bottom plate of the cylinder body and is matched with an elastic valve seat (35) arranged between the base (31) and the valve body (32) to realize the blocking of fluid; the top end of the sealing guide rod (34) extends out of an air hole (331) of the valve cover (33); the rubber diaphragm (36), the diaphragm gasket (38), the wave spring (37) and the spring support (39) are sequentially sleeved on the sealing guide rod (34) from top to bottom; the outer periphery of the rubber diaphragm (36) is fixedly arranged between the valve body (32) and the valve cover (33); the spring support (39) is arranged above the support plate (322), and the support plate (322) supports the spring support; the top end of the wave spring (37) is limited by a diaphragm gasket (38), and the bottom end of the wave spring is limited by a spring support (39).

2. The priming system of an electric vacuum pump for a pump according to claim 1, wherein: and a check valve (5) is arranged on a pipeline connecting the lubricating oil tank (4) and the vacuum pump (1).

3. The priming system of an electric vacuum pump for a pump according to claim 2, wherein: the bottom end of the sealing guide rod (34) is provided with a sealing boss (341) and a conical rod (342) which are connected, the sealing boss (341) is positioned in the cavity of the base (31), and the conical rod (342) is arranged in a through hole (323) of the bottom plate of the cylinder body of the valve body (32).

4. The priming system of an electric vacuum pump for a pump according to claim 3, wherein: the through hole (323) of the cylinder bottom plate is a tapered hole matched with the tapered rod (342) and used for realizing the guiding and slow circulation of fluid.

5. The electric vacuum pump priming system for pumps of any one of claims 1 to 4, wherein: the seal guide rod (34) is sleeved with a thrust pad (310) for limiting the downward displacement of the seal guide rod (34).

6. The priming system of an electric vacuum pump for a pump according to claim 5, wherein: the bottom surface of the elastic valve seat (35) is provided with an annular bulge (351) and an annular groove (352); the annular protrusion (351) is matched with the bottom end of the sealing guide rod (34) to realize sealing, and the annular groove (352) is matched with the upper end face of the base (31) to realize sealing.

7. The priming system of an electric vacuum pump for a pump according to claim 6, wherein: be provided with annular installation arch (361) on the outer periphery of rubber diaphragm (36), the top of valve body (32) is provided with annular mounting groove (324), annular installation arch (361) are installed in annular mounting groove (324) for prevent that rubber diaphragm (36) from droing.

8. The priming system of an electric vacuum pump for a pump according to claim 7, wherein: the spring support (39) is provided with annular constant head tank (391) on the up end, the lower extreme of wave spring (37) is installed in annular constant head tank (391).

9. The priming system of an electric vacuum pump for a pump according to claim 8, wherein: a plurality of air inlets (313) of the base (31) are communicated with the overflowing channel (314).

10. The priming system for an electric vacuum pump for a pump of claim 9, wherein: the top end of the sealing guide rod (34) is fixedly provided with a screw (311), the screw (311) is installed in an air hole (331) of the valve cover (33), and a sealing gasket (312) is arranged between the screw (311) and the sealing guide rod (34).

Images