CN114412787A

CN114412787A - Water ring vacuum pump

Info

Publication number: CN114412787A
Application number: CN202210037461.0A
Authority: CN
Inventors: 徐帅; 周建
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-04-29

Abstract

The invention belongs to the technical field of vacuum pump equipment, in particular to a water ring type vacuum pump, wherein a first disc and a second disc are arranged on the left sides of a first impeller and a second impeller, when the required air inflow is less, an operator can adjust the motor power and can adjust the state of a pump body by wrestling a bulge to reduce the opening number of air inlet holes, so that the air inflow is consistent with the opening number of the air inlet holes, when the required air inflow is more, the operator can adjust the motor power and increase the opening number of the air inlet holes by wrestling the bulge to adjust the state of the pump body again to increase the opening number of the air inlet holes, so that the air inflow is consistent with the opening number of the air inlet holes, the motor power can be adjusted and the state of the pump body can be changed according to the required air inflow, the effective utilization of energy is realized, and the energy waste is reduced.

Description

Water ring vacuum pump

Technical Field

The invention belongs to the technical field of vacuum pump equipment, and particularly relates to a water ring vacuum pump.

Background

The water ring pump is used as a self-sucking water pump, and then is gradually used in many industrial departments such as petroleum, chemical industry, machinery, mines, light industry, medicine, food and the like, and is widely applied in many technical processes of industrial production, such as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum moisture regaining, vacuum degassing and the like.

However, in actual production, when the flow rate of the water ring vacuum pump needs to be changed to cope with different production situations, the flow rate of the pump is mostly adjusted by changing the rotation speed of the impeller, bypass adjustment, outlet valve adjustment, cavitation adjustment and the like, but the flow rate adjusting methods are easy to cause disadvantages that a speed change mechanism and a speed change motor need to be added, the initial investment cost is high, the split flow rate cannot be fully utilized, extra loss is increased, the power loss is large, the economy is poor and the inlet pressure of the pump has strict requirements.

In view of this, in order to overcome the above technical problems, the present invention develops a water-ring vacuum pump, which solves the above technical problems.

Disclosure of Invention

The invention aims to solve the following specific problems: in actual production, when the flow rate of the water ring type vacuum pump needs to be changed to meet different production conditions, the flow rate of the pump is mostly adjusted by changing the rotating speed of an impeller, bypass adjustment, outlet valve adjustment, cavitation adjustment and the like, but the flow rate adjusting modes are easy to cause the defects that a speed change mechanism and a speed change motor need to be added, the initial investment cost is high, the flow splitting flow rate cannot be fully utilized, extra loss is increased, the power loss is large, the economy is poor and the strict requirement is placed on the inlet pressure of the pump.

The invention provides a water ring vacuum pump which comprises a motor, wherein the left side of the motor is fixedly connected with a pump body, a motor output shaft penetrates through the pump body, a shell fixedly connected with the motor output shaft is arranged in the pump body, a first impeller eccentrically arranged with a first shell is fixedly connected in the shell, the first impeller can stretch, a second impeller is fixedly connected outside the shell, a first disc is arranged on the left side of the first impeller, a fixed shaft is fixedly connected on the first disc, the fixed shaft is rotatably connected with the first impeller, a first hole and a second hole are formed in the first disc, a second disc is attached to the left side of the first disc, the second disc is rotatably connected with the pump body, a third hole and a fourth hole are formed in the second disc, and a bulge penetrating through the pump body is fixedly connected to the outer wall of the second disc.

Preferably, the pump body below fixed connection buffer board, a plurality of buffer rods of lower extreme fixed connection and the buffer rod of buffer board evenly set up, and are a plurality of buffer sleeve is established to the equal slip cap of lower extreme of buffer rod, buffer sleeve below fixed connection bottom plate, fixed connection spring and spring evenly set up between buffer board and the bottom plate.

Preferably, the air inlet is fixedly connected with a filter screen.

Preferably, a sealing strip is arranged at the joint of the bulge and the pump body.

Preferably, the brush is fixedly connected to the second impeller.

Preferably, the brush is made of butadiene-acrylonitrile rubber.

The invention has the following beneficial effects:

through be equipped with No. one disc and No. two discs on impeller and No. two impeller left sides, when required air input is less, operating personnel can turn down motor power also can adjust the open quantity of gaseous inlet port through breaking the arch off with the fingers and thumb simultaneously the pump body state, make air input and the open quantity of inlet port conform, when required air input is more, operating personnel can turn up motor power, increase gaseous inlet port open quantity through breaking the arch off with the fingers and thumb the pump body state of readjustment simultaneously, make air input and inlet port open quantity conform, thereby can adjust motor power and change the pump body state according to required air input, realize the effective use of the energy, reduce the energy waste.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a left side cross-sectional view of the present invention;

in the figure: the pump comprises a motor 1, a pump body 2, a shell 3, a first impeller 4, a second impeller 5, a first disc 6, a second disc 7, a fixing shaft 8, a first hole 9, a second hole 10, a third hole 11, a fourth hole 12, a protrusion 13, a buffer plate 14, a buffer rod 15, a buffer sleeve 16, a bottom plate 17, a spring 18, a filter screen 19, a sealing strip 20 and a brush 21.

Detailed Description

A water ring vacuum pump according to the present invention will be described below with reference to fig. 1 to 3.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

The invention provides a water ring vacuum pump, which comprises a motor 1, wherein the left side of the motor 1 is fixedly connected with a pump body 2, an output shaft of the motor 1 penetrates through the pump body 2, a shell 3 fixedly connected with the output shaft of the motor 1 is arranged inside the pump body 2, a first impeller 4 eccentrically arranged with the first shell 3 is fixedly connected inside the shell 3, the first impeller 4 can stretch and retract, a second impeller 5 is fixedly connected outside the shell 3, a first disc 6 is arranged on the left side of the first impeller 4, a fixed shaft 8 is fixedly connected on the first disc 6, the fixed shaft 8 is rotatably connected with the first impeller 4, a first hole 9 and a second hole 10 are formed in the first disc 6, a second disc 7 is attached to the left side of the first disc 6, the second disc 7 is rotatably connected with the pump body 2, a third hole 11 and a fourth hole 12 are formed in the second disc 7, the outer wall of the second disc 7 is fixedly connected with a bulge 13 penetrating through the pump body 2;

when the flow rate of gas to be pumped by the water ring vacuum pump is not high, the bulge 13 fixedly connected to the outer part of the second disc 7 and penetrating through the pump body 2 can be broken off, so that the second disc 7 arranged in the pump body 2 and attached to the first disc 6 rotates, the third hole 11 formed in the second disc 7 and the first hole 9 formed in the first disc 6 are staggered mutually, the first hole 9 is blocked by the solid part on the second disc 7, then an operator opens the motor 1, the motor 1 is electrified to work, the output shaft of the motor 1 rotates to drive the shell 3 fixedly connected to the output shaft of the motor 1 to rotate, the shell 3 rotates to drive the first impeller 4 fixedly connected to the inner part of the shell 3 and rotatably connected with the fixed shaft 8 to rotate, because the fixed shaft 8 is fixedly connected to the first disc 6 arranged on the left side of the first impeller, and the first impeller 4 and the shell 3 are eccentrically arranged, therefore, in the rotation process of the first impeller 4, when the first impeller 4 moves to the top, the first impeller 4 extends to the longest side, when the first impeller 4 moves to the lowest side, the first impeller 4 contracts to the shortest side, when the first impeller 4 rotates, the first impeller 4 can stretch back and forth, meanwhile, air enters the pump body 2 from the air inlet, and due to the fact that the second hole 10 is blocked by the solid part on the second disk 7, the air can sequentially penetrate through the third hole 11 on the second disk 7 and the first hole 9 on the first disk 6, then the air enters the gap between two adjacent blades in the first impeller 4, after the first impeller 4 rotates one hundred eighty degrees, the air is separated from the gap between two adjacent blades in the first impeller, then sequentially penetrates through the air outlet holes on the first disk 6 and the second disk 7, and then goes out from the air outlet on the pump body 2;

when a large amount of gas needs to be extracted by the water ring vacuum pump, an operator can break the protrusion 13, the protrusion 13 restores the original position, so that the third hole 11 is communicated with the first hole 9, the operator can stir the protrusion 13 to increase the number of the opened holes, so that more gas can be extracted, then the gas enters the pump body 2 through the gas inlet, then the gas sequentially passes through the third hole 11, the fourth hole 12, the first hole 9 and the second hole 10, the gas passing through the first hole 9 and the third hole 11 enters the first impeller 4, the gas passing through the second hole 10 and the fourth hole 12 enters the second impeller 5 fixedly connected to the outer part of the shell 3, then the first impeller 4 and the second impeller 5 are driven to rotate for one hundred eighty degrees, the gas is separated from the first impeller 4 and the second impeller 5, then the gas separated from the first impeller 4 and the second impeller 5 sequentially passes through the gas outlet holes on the first disc 6 and the second disc 7, gas flows out from the gas outlet of the pump body 2 afterwards, and the state of the water ring vacuum pump can be adjusted according to the flow velocity of the required gas in the process, so that the actual using effect of the water ring vacuum pump is improved.

Compared with the prior art, when the flow of the water ring type vacuum pump needs to be changed to deal with different production conditions, the flow of the pump is mostly adjusted by changing the rotating speed of the impeller, bypass adjustment, outlet valve adjustment, cavitation adjustment and the like, but the flow adjusting modes are easy to cause the defects that a speed change mechanism and a speed change motor need to be added, the initial investment cost is high, the flow splitting rate cannot be fully utilized, extra loss is increased, the power loss is large, the economy is poor and the strict requirement is placed on the pressure at the inlet of the pump.

The invention does not need to add a speed change mechanism on the motor or use a more expensive speed change motor to adjust the rotating speed of the impeller, has no excessive requirements on bypass flow and pressure of a pump inlet, and can finish the flow adjustment of the vacuum pump only by shifting the bulges 13 to change the number of communicated air inlets;

in addition, the invention needs to install the outlet valve on the discharge pipeline to regulate relative to the outlet valve, the degree of integration of the invention is high, not merely save the manpower and apparatus cost that need to install the outlet valve on the pipeline, and does not need to consider the common trouble of the valve "run", "emerge", "drip", leak "may appear in the outlet valve use, the invention only needs to use the electrical machinery 1 to provide the power for pump body 2, does not need to connect any ancillary equipment externally, only change the quantity of communicating air inlet and can finish the flow regulation of the vacuum pump by stirring the projection 13, the earlier stage ancillary equipment cost is put into a little, the apparatus is high in the degree of integration, the installation uses the process simply.

The invention provides a water ring vacuum pump, wherein a buffer plate 14 is fixedly connected below a pump body 2, the lower end of the buffer plate 14 is fixedly connected with a plurality of buffer rods 15, the buffer rods 15 are uniformly arranged, the lower ends of the buffer rods 15 are all slidably sleeved with buffer sleeves 16, a bottom plate 17 is fixedly connected below the buffer sleeves 16, and springs 18 are fixedly connected between the buffer plate 14 and the bottom plate 17 and are uniformly arranged.

Through fixed connection spring 18 and spring 18 evenly set up between buffer board 14 and bottom plate 17, can be in the vacuum pump use, slow down the vibration of vacuum pump, thereby the noise in the vacuum pump use has been reduced, through a plurality of buffer poles 15 of lower extreme fixed connection at buffer board 14 and buffer pole 15 evenly set up, buffer sleeve 16 is established to the equal slip cap of lower extreme of a plurality of buffer poles 15, in buffer process, buffer pole 15 can play the guide effect with buffer sleeve 16 cooperation use, reduce spring 18 and rock and produce the unordered nature of vacuum pump motion, make the more stable of buffering.

The invention provides a water ring vacuum pump, wherein a filter screen 19 is fixedly connected at an air inlet.

When the water ring vacuum pump extracts gas, because of containing impurity in the gas, the live time overlength can block up water ring vacuum pump's air inlet, consequently locates fixedly connected filter screen 19 at the air inlet, can filter gas when the pump is pumped gas, reduces impurity and gets into inside the pump body 2 and influence the work of the pump body 2.

The invention provides a water ring vacuum pump, wherein a sealing strip 20 is arranged at the joint of a bulge 13 and a pump body 2.

When operating personnel breaks arch 13 off with the fingers and thumb, because No. two discs 7 rotate with the pump body 2 and be connected, can take place relative slip between arch 13 and the pump body 2, nevertheless can take place gas leakage at arch 13 and the relative slip in-process of the pump body 2 to can influence the inside normal work of the pump body 2, consequently be equipped with sealing strip 20 in arch 13 and the laminating department of the pump body 2, avoid the inside gas leakage of the pump body 2, guarantee the inside gas tightness of the pump body 2.

The invention provides a water ring vacuum pump, wherein a brush 21 is fixedly connected to a second impeller 5.

After the water ring vacuum pump is used for a long time, scale can be adhered to the inner wall of the pump body 2, and the rotation of the blades can be influenced by excessive scale, so that the brush 21 is fixedly connected to the top end of each blade on the second impeller 5, the scale on the inner wall of the pump body 2 can be scraped in the rotation process of the second impeller 5, the residue of the scale on the inner wall of the pump body 2 can be reduced, the normal rotation of the second impeller 5 is ensured, and the normal operation of the water ring vacuum pump is ensured;

in addition, No. two impeller 5 has the clearance between the top of its blade and the pump body 2 in the rotation process, and the clearance here can be filled by the annular rivers that the centrifugal force that No. two impeller 5 rotated the production formed, brush 21 fixed mounting is at No. two impeller 5's each blade top, brush 21 can be covered by annular rivers following No. two impeller 5's rotation process to can not influence No. two impeller 5's blade and isolate the cavity on blade both sides, and then guarantee that No. two impeller 5 can normally carry gas.

The invention provides a water ring vacuum pump, and a brush 21 is made of butadiene-acrylonitrile rubber.

Because the second impeller 5 drives the brush 21 to rotate, the brush 21 can always contact with the inner wall of the pump body 2, and the brush 21 is greatly abraded, the brush 21 is made of butadiene acrylonitrile rubber, and the wear resistance of butadiene acrylonitrile rubber is good, so that the service life of the brush 21 can be prolonged, the normal work of the brush 21 is ensured, and scale adhered to the inner wall of the pump body 2 is reduced.

The working principle is as follows: when the flow rate of gas to be pumped by the water ring vacuum pump is not high, the bulge 13 can be pulled off, so that the second disc 7 rotates, the third hole 11 blocks the first hole 9, then an operator opens the motor 1 to electrify the motor 1, the output shaft of the motor 1 rotates to drive the shell 3 to rotate, the shell 3 rotates to drive the first impeller 4 to rotate, the fixed shaft 8 is fixedly connected to the first disc 6 arranged on the left side of the first impeller, and the first impeller 4 is eccentrically arranged with the shell 3, so that in the rotating process of the first impeller 4, when the first impeller 4 moves to the uppermost part, the first impeller 4 extends to the longest part, when the first impeller 4 moves to the lowermost part, the first impeller 4 contracts to the shortest part, when the first impeller 4 rotates, the first impeller 4 can stretch back and forth, meanwhile, the gas enters the pump body 2 from the gas inlet, and the filter screen 19 filters the gas, because the first hole 9 is blocked by the third hole 11, gas can sequentially pass through the fourth hole 12 and the second hole 10, then the gas enters the first impeller 4, the first impeller 4 drives the gas to rotate for one hundred eighty degrees, the gas is separated from the first impeller 4, then sequentially passes through the gas outlet holes in the first disc 6 and the second disc 7, and then goes out from the gas outlet hole in the pump body 2, when the flow rate of the gas to be pumped by the water ring vacuum pump is too high, an operator can break the bulge 13 and restore the bulge 13 to the original position, so that the third hole 11 is communicated with the first hole 9, the operator adjusts the switch to increase the power, thereby increasing the gas flow rate in the gas pumping process, then the gas enters the pump body 2 through the gas inlet, then the gas sequentially passes through the third hole 11, the fourth hole 12, the first hole 9 and the second hole 10, and the gas passing through the first hole 9 and the third hole 11 enters the first impeller 4, the gas that passes No. two holes 10 and No. four holes 12 gets into on No. two impeller 5, No. two impeller 4 and No. two impeller 5 drive gaseous rotatory one hundred eighty degrees back afterwards, gaseous from No. 4 impeller and No. two impeller 5 break away from, can drive brush 21 and strike off the incrustation scale on the inner wall of the pump body 2 at No. two impeller 5 rotation in-process, the gas that breaks away from No. 4 impeller and No. two impeller 5 passes the venthole on No. 6 discs and No. two discs 7 in proper order afterwards, gaseous gas outlet outflow from the pump body 2 afterwards, power can be adjusted according to the size of required gas flow to this in-process, thereby improve water ring vacuum pump's actual use effect.

Claims

1. A water-ring vacuum pump, comprising a motor (1), characterized in that: the pump is characterized in that the left side of the motor (1) is fixedly connected with a pump body (2), an output shaft of the motor (1) penetrates through the pump body (2), a shell (3) fixedly connected with the output shaft of the motor (1) is arranged inside the pump body (2), a first impeller (4) eccentrically arranged with the shell (3) is fixedly connected inside the shell (3), the first impeller (4) is telescopic, a second impeller (5) is fixedly connected outside the shell (3), a first disc (6) is arranged on the left side of the first impeller (4), a fixed shaft (8) is fixedly connected on the first disc (6), the fixed shaft (8) is rotatably connected with the first impeller (4), a first hole (9) and a second hole (10) are formed in the first disc (6), a second disc (7) is attached to the left side of the first disc (6), and the second disc (7) is rotatably connected with the pump body (2), no. two discs (7) are provided with a No. three hole (11) and a No. four hole (12), and the outer wall of each No. two disc (7) is fixedly connected with a bulge (13) penetrating through the pump body (2).

2. A water-ring vacuum pump according to claim 1, wherein: the pump body (2) below fixed connection buffer board (14), a plurality of buffer rods of lower extreme fixed connection (15) of buffer board (14) and buffer rod (15) evenly set up, and are a plurality of buffer sleeve (16) are established to the equal slip cap of lower extreme of buffer rod (15), buffer sleeve (16) below fixed connection bottom plate (17), fixed connection spring (18) and spring (18) evenly set up between buffer board (14) and bottom plate (17).

3. A water-ring vacuum pump according to claim 1, wherein: the water inlet is fixedly connected with a filter screen (19).

4. A water-ring vacuum pump according to claim 1, wherein: and a sealing strip (20) is arranged at the joint of the bulge (13) and the pump body (2).

5. A water-ring vacuum pump according to claim 1, wherein: and the second impeller (5) is fixedly connected with a brush (21).

6. A water-ring vacuum pump according to claim 1, wherein: the brush (21) is made of butadiene-acrylonitrile rubber.