CN115076109A - Explosion-proof water ring vacuum pump and compressor - Google Patents

Abstract

The invention belongs to the technical field of water ring vacuum pumps, in particular to an explosion-proof water ring vacuum pump and a compressor, comprising a mounting base, and a drive motor is fixedly mounted on the upper surface of the mounting base. The explosion-proof water-ring vacuum pump and compressor are provided with a wear-resistant explosion-proof layer and a pressurized explosion-proof mechanism. When in use, the wear-resistant and pressure-resistant performance of the vacuum pump body is increased by adding a zirconia ceramic wear-resistant explosion-proof layer in the vacuum pump body. By adding a compressed air storage tank, the gas pumped by the vacuum pump body is compressed twice to increase the compression force of the vacuum pump body, and the sealing ball plug is matched with the sealing ring and the sealing ring to prevent the compressed gas inside the compressed air storage tank from flowing back to the In the vacuum pump body, it solves the problem that the existing water ring vacuum pump can only provide a small compression pressure, which not only limits its scope of use, but also easily damages the water ring vacuum pump due to overloading and causes flammable and explosive gases to explode.

Description

An explosion-proof water ring vacuum pump and compressor

technical field

The invention relates to the technical field of water ring vacuum pumps, in particular to an explosion-proof water ring vacuum pump and a compressor.

Background technique

The water ring vacuum pump is equipped with an eccentric rotor with fixed blades. It throws the liquid to the stator wall, and the liquid forms a liquid ring concentric with the stator. The liquid ring and the rotor blades together form a variable volume rotary variable volume vacuum pump. The water ring vacuum pump is a kind of rough vacuum pump. The ultimate vacuum it can obtain is 2000~4000Pa, and the vacuum degree of the unit formed with the vacuum pump can reach 1~600Pa. The water ring pump can also be used as a compressor, which is called a water ring compressor.

In the process of using the existing water ring vacuum pump, due to the low temperature of the compressed gas, the temperature of the exhaust gas is only 10-15 °C higher than the temperature of the intake air, so it is very suitable for pumping and pressing flammable and explosive gases. In the actual use process, the existing water ring vacuum pump can only provide a small compression pressure, which not only limits its scope of use, but also easily damages the water ring vacuum pump and causes flammable and explosive gas explosion due to overload. Therefore, it is necessary to An explosion-proof water ring vacuum pump and compressor.

SUMMARY OF THE INVENTION

Based on the technical problems that the existing water ring vacuum pump can only provide a small compression pressure, which not only limits its use range, but also easily damages the water ring vacuum pump due to overloading and causes the explosion of flammable and explosive gases. An explosion-proof water ring vacuum pump and compressor.

An explosion-proof water ring vacuum pump and a compressor proposed by the present invention includes a mounting base, a drive motor is fixedly mounted on the upper surface of the mounting base, a vacuum pump body is fixedly mounted on the upper surface of the mounting base, and an inner wall of the vacuum pump body is fixedly mounted. A wear-resistant explosion-proof layer is fixedly connected, and a water ring liquid is arranged inside the vacuum pump body.

A drive shaft is installed on the inner wall of the vacuum pump body through a bearing, and an eccentric impeller is fixedly sleeved on the surface of the drive shaft.

One end of the drive shaft penetrates and extends to the surface of the vacuum pump body, one end of the drive shaft is fixedly installed with a driven pulley, the output shaft of the drive motor is fixedly installed with a driving pulley, and the driving pulley is connected with the driven pulley. The driving pulley is connected by a belt drive.

One end of the vacuum pump body is respectively fixedly connected with an air inlet pipe and an air outlet pipe, and the inner walls of the air inlet pipe and the air outlet pipe are fixedly connected with the inner wall of the vacuum pump body.

The inner walls of the air inlet pipe and the air outlet pipe are fixedly connected with a liquid blocking mechanism, the liquid blocking mechanism includes a liquid blocking baffle, and the surfaces of the liquid blocking baffle are fixedly connected with the inner walls of the air inlet pipe and the gas outlet pipe respectively.

A pressurized explosion-proof mechanism is fixedly connected to the upper surface of the installation base, and the pressurized explosion-proof mechanism includes a compressed air storage tank, and the surface of the compressed air storage tank is fixedly connected to the upper surface of the installation base.

Preferably, the inside of the wear-resistant explosion-proof layer is zirconia ceramics.

Preferably, a plurality of the liquid blocking baffles are distributed in a staggered manner on the inner walls of the air inlet pipe and the air outlet pipe, respectively, and the surfaces of the liquid blocking baffles are in the shape of an arc.

Preferably, an air intake control pipe is fixedly connected to the surface of the compressed air storage tank, one end of the air intake control pipe is fixedly connected with one end of the air outlet pipe, and the inner wall of the air intake control pipe is fixedly connected with a support ring and sealing ring.

Preferably, a support spring is fixedly connected to the surface of the support ring, a sealing ring is fixedly connected to the surface of the sealing ring, a sealing ball plug is fixedly connected to one end of the support spring, and the surface of the sealing ball plug is connected to the sealing ring. the inner wall of the plug.

Preferably, a support spring is fixedly connected to the surface of the support ring, a sealing ring is fixedly connected to the surface of the sealing ring, a sealing ball plug is fixedly connected to one end of the support spring, and the surface of the sealing ball plug is connected to the sealing ring. the inner wall of the plug.

Preferably, a pressure bearing ring is fixedly connected to the inner wall of the explosion-proof control tube, a pressure bearing rod is slidably connected to the inner wall of the pressure bearing ring, and a pressure piston is fixedly connected to one end of the pressure bearing rod. It is slidingly connected with the inner wall of the explosion-proof control pipe.

Preferably, a pressure spring is sleeved on the surface of the pressure-bearing rod, and two ends of the pressure spring are respectively fixedly connected with the surface of the pressure-bearing ring and the surface of the pressure piston.

Preferably, a limit switch is fixedly installed on the inner top wall of the explosion-proof control tube, and the limit switch is electrically connected with the drive motor through a wire;

An alarm is fixedly installed on the surface of the compressed air storage tank, and the limit switch is electrically connected to the alarm through a wire.

Preferably, an output pipe is fixedly connected to the surface of the compressed air storage tank, the inner wall of the output pipe is fixedly connected to the inner wall of the compressed air storage tank, and a one-way valve is fixedly installed on the surface of the output pipe.

The beneficial effects in the present invention are:

By setting a wear-resistant explosion-proof layer and a pressurized explosion-proof mechanism, when in use, the wear-resistant and pressure-resistant performance of the vacuum pump body is increased by adding a zirconia ceramic wear-resistant explosion-proof layer in the vacuum pump body, and by adding a compressed air storage tank, the vacuum pump The gas pumped by the pump body is compressed twice to increase the compression force of the vacuum pump body. At the same time, it is connected to the drive motor and the alarm through the limit switch set in the explosion-proof control pipe. When the overpressure is too large, the drive motor is automatically controlled to stop and shut down. The alarm alarms, and the sealing ball plug cooperates with the sealing ring and the sealing ring to prevent the compressed gas inside the compressed air storage tank from flowing back into the vacuum pump body, thus solving the problem that the existing water ring vacuum pump can only provide a small compression pressure, not only The scope of its use is limited, and at the same time, it is easy to cause damage to the water ring vacuum pump due to overload and cause the problem of flammable and explosive gas explosion.

Description of drawings

Fig. 1 is the schematic diagram of a kind of explosion-proof water ring vacuum pump and compressor proposed by the present invention;

2 is a perspective view of a drive motor structure of an explosion-proof water ring vacuum pump and a compressor proposed by the present invention;

Fig. 3 is a perspective view of the mounting base structure of an explosion-proof water ring vacuum pump and a compressor proposed by the present invention;

4 is a half-section view of the air intake pipe structure of an explosion-proof water ring vacuum pump and a compressor proposed by the present invention;

5 is a partial cross-sectional view of an air intake control pipe structure of an explosion-proof water ring vacuum pump and a compressor proposed by the present invention;

6 is a half-section view of the explosion-proof control pipe structure of an explosion-proof water ring vacuum pump and a compressor proposed by the present invention.

In the picture: 1. Installation base; 2. Drive motor; 3. Vacuum pump body; 4. Wear-resistant and explosion-proof layer; 5. Drive shaft; 6. Eccentric impeller; 7. Driven pulley; 8. Driving pulley; 9. Intake pipe; 10. Outlet pipe; 11. Liquid blocking baffle; 12. Compressed air storage tank; 1201, Intake control pipe; 1202, Support ring; 1203, Seal ring; 1204, Support spring; 1205, Seal ring; 1206 , sealing ball plug; 1207, explosion-proof control pipe; 1208, pressure ring; 1209, pressure rod; 1210, pressure piston; 1211, pressure spring; 1212, limit switch; 1213, alarm; 1214, output pipe; 1215 , One-way valve.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

1-6, an explosion-proof water ring vacuum pump and compressor, including a mounting base 1, in order to realize the drive of the vacuum pump, a driving motor 2 is fixedly installed on the upper surface of the mounting base 1, and the upper surface of the mounting base 1 is fixedly installed There is a vacuum pump body 3 , the inner wall of the vacuum pump body 3 is fixedly connected with a wear-resistant explosion-proof layer 4 , and a water ring liquid is arranged inside the vacuum pump body 3 .

Further, the inside of the wear-resistant and explosion-proof layer 4 is zirconia ceramics, which has the characteristics of high temperature resistance, corrosion resistance and wear resistance, and especially has the advantages of high temperature and high pressure and small permanent deformation.

A drive shaft 5 is mounted on the inner wall of the vacuum pump body 3 through a bearing, and an eccentric impeller 6 is fixedly sleeved on the surface of the drive shaft 5 .

One end of the drive shaft 5 penetrates and extends to the surface of the vacuum pump body 3, one end of the drive shaft 5 is fixedly installed with a driven pulley 7, the output shaft of the drive motor 2 is fixedly installed with a driving pulley 8, and the driving pulley 8 and the driven pulley 8 are fixedly installed. The pulley 7 is connected by a belt drive.

Further, when in use, the output shaft of the drive motor 2 drives the driving pulley 8 to rotate, the driving pulley 8 drives the driven pulley 7 to rotate through the belt, the driven pulley 7 drives the driving shaft 5 to rotate, and the driving shaft 5 drives the eccentric. The rotation of the impeller 6 drives the water ring liquid to form a water ring seal with the inner wall of the vacuum pump body 3 through the rotation of the eccentric impeller 6, and when the eccentric impeller 6 rotates, the distance from the inner wall of the vacuum pump body 3 changes, and the gas entering the inside of the vacuum pump body 3 is changed. Compress and pump out.

One end of the vacuum pump body 3 is fixedly connected with an air inlet pipe 9 and an air outlet pipe 10 respectively, and the inner walls of the air inlet pipe 9 and the air outlet pipe 10 are fixedly connected with the inner wall of the vacuum pump body 3 .

In order to prevent the water ring liquid inside the vacuum pump body 3 from splashing into the air inlet pipe 9 and the air outlet pipe 10, a liquid blocking mechanism is fixedly connected to the inner walls of the air inlet pipe 9 and the gas outlet pipe 10. The surfaces of the liquid baffle 11 are fixedly connected to the inner walls of the air inlet pipe 9 and the air outlet pipe 10 respectively.

The plurality of liquid blocking baffles 11 are distributed in a staggered manner on the inner walls of the air inlet pipe 9 and the air outlet pipe 10 respectively, and the surface of the liquid blocking baffles 11 is in the shape of an arc.

Further, by setting a plurality of arc-shaped liquid blocking baffles 11 in the air inlet pipe 9 and the air outlet pipe 10, when the vacuum pump body 3 performs suction and compressed gas pumping, the splashes entering the air inlet pipe 9 and the air outlet pipe 10 are prevented. The internal water ring liquid is blocked, so as to achieve a better effect of suction and compression of pump air.

A pressurized explosion-proof mechanism is fixedly connected to the upper surface of the installation base 1 .

In order to prevent the compressed gas inside the compressed air storage tank 12 from flowing back into the vacuum pump body 3 , an air intake control pipe 1201 is fixedly connected to the surface of the compressed air storage tank 12 , and one end of the air intake control pipe 1201 is fixedly connected to one end of the air outlet pipe 10 . , a support ring 1202 and a sealing ring 1203 are fixedly connected to the inner wall of the intake control pipe 1201 respectively.

The surface of the support ring 1202 is fixedly connected with a support spring 1204, the surface of the sealing ring 1203 is fixedly connected with a sealing ring 1205, and one end of the support spring 1204 is fixedly connected with a sealing ball plug 1206, and the surface of the sealing ball plug 1206 is inserted into the inner wall of the sealing ring 1205. catch.

Further, when the vacuum pump body 3 drives the drive shaft 5 and the eccentric impeller 6 to rotate through the drive motor 2 and pumps gas into the compressed air storage tank 12, the vacuum pump body 3 pumps the gas into the air intake control pipe 1201 through the gas outlet pipe 10, Squeeze and push the sealing ball plug 1206 to separate from the sealing ring 1205, and the gas enters the compressed air storage tank 12 through the intake control pipe 1201. When the vacuum pump body 3 stops working, the pressure inside the compressed air storage tank 12 and the force of the support spring 1204 Under the action force, the sealing ball plug 1206 and the inner wall of the sealing ring 1205 are inserted and tightened to prevent the compressed gas inside the compressed air storage box 12 from flowing back into the vacuum pump body 3, so as to achieve the effect of controlling the air return of the compressed air storage box 12 .

An explosion-proof control pipe 1207 is fixedly communicated with the inner top wall of the compressed air storage tank 12 , and one end of the explosion-proof control pipe 1207 penetrates and extends to the surface of the compressed air storage tank 12 .

A pressure bearing ring 1208 is fixedly connected to the inner wall of the explosion-proof control pipe 1207 , and a pressure bearing rod 1209 is slidably connected to the inner wall of the pressure bearing ring 1208 . The inner wall of the 1207 is slidably connected.

A pressure spring 1211 is sleeved on the surface of the pressure bearing rod 1209 , and both ends of the pressure spring 1211 are fixedly connected to the surface of the pressure bearing ring 1208 and the surface of the pressure piston 1210 respectively.

A limit switch 1212 is fixedly installed on the inner top wall of the explosion-proof control tube 1207 , and the limit switch 1212 is electrically connected to the drive motor 2 through a wire.

An alarm 1213 is fixedly installed on the surface of the compressed air storage tank 12 , and the limit switch 1212 is electrically connected to the alarm 1213 through wires.

Further, the drive motor 2 is electrically connected to the normally closed contact of the limit switch 1212 through a wire, and the alarm 1213 is electrically connected to the normally open contact of the limit switch 1212 through a wire.

When the pressure inside the compressed air storage tank 12 is too large, the compressed gas inside the compressed air storage tank 12 pushes the pressure piston 1210 to move, and the pressure piston 1210 drives the pressure bearing rod 1209 to move upward, and the upward movement of the pressure bearing rod 1209 is connected to the limit switch. After the contact of 1212, the normally closed contact of the limit switch 1212 is disconnected, the drive motor 2 is controlled to stop working, the normally open contact of the limit switch 1212 is closed, and the alarm 1213 is controlled to give an overpressure alarm.

The surface of the compressed air storage tank 12 is fixedly connected with an output pipe 1214 , the inner wall of the output pipe 1214 is fixedly connected with the inner wall of the compressed air storage tank 12 , and a one-way valve 1215 is fixedly installed on the surface of the output pipe 1214 .

By setting the wear-resistant explosion-proof layer 4 and the pressurized explosion-proof mechanism, during use, the wear-resistant and pressure-resistant performance of the vacuum pump body 3 is increased by adding a zirconia ceramic wear-resistant explosion-proof layer 4 in the vacuum pump body 3, and by increasing the compression storage The air box 12 compresses the gas pumped by the vacuum pump body 3 twice, and increases the compressive force of the vacuum pump body 3. At the same time, it is connected to the drive motor 2 and the alarm 1213 through the limit switch 1212 set in the explosion-proof control pipe 1207. When the overpressure is too large, the drive motor 2 is automatically controlled to stop and the alarm 1213 alarms, and the sealing ball plug 1206 cooperates with the sealing ring 1203 and the sealing ring 1205 to prevent the compressed gas inside the compressed air storage tank 12 from flowing back to the vacuum pump body 3 Therefore, the existing water ring vacuum pump can only provide a small compression pressure, which not only limits its use range, but also easily damages the water ring vacuum pump due to overload and causes the explosion of flammable and explosive gases.

Working principle: When in use, the output shaft of the drive motor 2 drives the driving pulley 8 to rotate, the driving pulley 8 drives the driven pulley 7 to rotate through the belt, the driven pulley 7 drives the driving shaft 5 to rotate, and the driving shaft 5 drives the eccentric. The rotation of the impeller 6 drives the water ring liquid to form a water ring seal with the inner wall of the vacuum pump body 3 through the rotation of the eccentric impeller 6, and when the eccentric impeller 6 rotates, the distance from the inner wall of the vacuum pump body 3 changes. Compression is performed and pumped out through outlet tube 10 .

The vacuum pump body 3 pumps the gas into the air intake control pipe 1201 through the air outlet pipe 10, squeezes and pushes the sealing ball plug 1206 to separate from the sealing ring 1205, and the gas enters the compressed air storage tank 12 through the air intake control pipe 1201, and is in the vacuum pump body 3 When it stops working, under the pressure inside the compressed air storage tank 12 and the force of the support spring 1204, the sealing ball plug 1206 and the inner wall of the sealing ring 1205 are plugged and tightened to prevent the compressed gas inside the compressed air storage tank 12 from flowing back into the vacuum pump body 3.

When the pressure inside the compressed air storage tank 12 is too large, the compressed gas inside the compressed air storage tank 12 pushes the pressure piston 1210 to move, and the pressure piston 1210 drives the pressure bearing rod 1209 to move upward, and the upward movement of the pressure bearing rod 1209 is connected to the limit switch. After the contact of 1212, the normally closed contact of the limit switch 1212 is disconnected, the drive motor 2 is controlled to stop working, the normally open contact of the limit switch 1212 is closed, and the alarm 1213 is controlled to give an overpressure alarm.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (10)

1. An explosion-proof water ring vacuum pump and a compressor, comprising a mounting base (1), characterized in that: a drive motor (2) is fixedly installed on the upper surface of the mounting base (1), and a drive motor (2) is fixedly installed on the upper surface of the mounting base (1). A vacuum pump body (3) is fixedly installed on the upper surface, the inner wall of the vacuum pump body (3) is fixedly connected with a wear-resistant explosion-proof layer (4), and a water ring liquid is arranged inside the vacuum pump body (3); A drive shaft (5) is installed on the inner wall of the vacuum pump body (3) through a bearing, and an eccentric impeller (6) is fixedly sleeved on the surface of the drive shaft (5); One end of the drive shaft (5) penetrates and extends to the surface of the vacuum pump body (3), one end of the drive shaft (5) is fixedly installed with a driven pulley (7), and the output of the drive motor (2) A driving pulley (8) is fixedly installed on the shaft, and the driving pulley (8) is connected with the driven pulley (7) through a belt drive; One end of the vacuum pump body (3) is fixedly connected with an air inlet pipe (9) and an air outlet pipe (10) respectively, and the inner walls of the air inlet pipe (9) and the air outlet pipe (10) are fixed with the inner wall of the vacuum pump body (3) connected; The inner walls of the air inlet pipe (9) and the air outlet pipe (10) are fixedly connected with a liquid blocking mechanism, and the liquid blocking mechanism comprises a liquid blocking baffle plate (11), and the surfaces of the liquid blocking baffle plate (11) are respectively connected with the liquid blocking plate (11). The inner wall of the air inlet pipe (9) and the air outlet pipe (10) are fixedly connected; A pressurized explosion-proof mechanism is fixedly connected to the upper surface of the installation base (1), and the pressurized explosion-proof mechanism includes a compressed air storage tank (12), and the surface of the compressed air storage tank (12) is connected to the installation base (1). the upper surface of the fixed connection. 2. An explosion-proof water-ring vacuum pump and a compressor according to claim 1, characterized in that: the inside of the wear-resistant explosion-proof layer (4) is made of zirconia ceramics. 3. An explosion-proof water-ring vacuum pump and compressor according to claim 1, characterized in that: a plurality of said liquid blocking baffles (11) are respectively arranged on the inner walls of the air inlet pipe (9) and the air outlet pipe (10) Staggered distribution, the surface of the liquid blocking baffle (11) is in the shape of a circular arc. 4. An explosion-proof water ring vacuum pump and compressor according to claim 1, characterized in that: an air intake control pipe (1201) is fixedly communicated with the surface of the compressed air storage tank (12), and the air intake control One end of the pipe (1201) is in fixed communication with one end of the air outlet pipe (10), and a support ring (1202) and a sealing ring (1203) are respectively fixedly connected to the inner wall of the air intake control pipe (1201). 5. An explosion-proof water ring vacuum pump and compressor according to claim 4, characterized in that: the surface of the support ring (1202) is fixedly connected with a support spring (1204), and the surface of the seal ring (1203) is fixedly connected with a support spring (1204). A sealing ring (1205) is fixedly connected, one end of the support spring (1204) is fixedly connected with a sealing ball plug (1206), and the surface of the sealing ball plug (1206) is inserted into the inner wall of the sealing ring (1205). 6. An explosion-proof water ring vacuum pump and compressor according to claim 1, characterized in that: an explosion-proof control pipe (1207) is fixedly communicated with the inner top wall of the compressed air storage tank (12), and the explosion-proof control One end of the tube (1207) penetrates and extends to the surface of the compressed air tank (12). 7. An explosion-proof water ring vacuum pump and compressor according to claim 6, wherein a pressure-bearing ring (1208) is fixedly connected to the inner wall of the explosion-proof control pipe (1207), and the pressure-bearing ring (1208) is fixedly connected to the inner wall of the explosion-proof control pipe (1207). ) is slidably connected with a pressure-bearing rod (1209), one end of the pressure-bearing rod (1209) is fixedly connected with a pressure piston (1210), and the surface of the pressure piston (1210) is connected to the inner wall of the explosion-proof control pipe (1207). Slide to connect. 8. An explosion-proof water ring vacuum pump and compressor according to claim 7, characterized in that: a pressure spring (1211) is sleeved on the surface of the pressure bearing rod (1209), and the pressure spring (1211) is The two ends are respectively fixedly connected with the surface of the pressure bearing ring (1208) and the surface of the pressure piston (1210). 9. An explosion-proof water ring vacuum pump and compressor according to claim 8, characterized in that: a limit switch (1212) is fixedly installed on the inner top wall of the explosion-proof control pipe (1207), and the limit switch ( 1212) electrically connected with the drive motor (2) through wires; An alarm (1213) is fixedly installed on the surface of the compressed air storage tank (12), and the limit switch (1212) is electrically connected to the alarm (1213) through a wire. 10. An explosion-proof water ring vacuum pump and compressor according to claim 1, characterized in that: an output pipe (1214) is fixedly communicated with the surface of the compressed air storage tank (12), and the output pipe (1214) The inner wall of the gas storage tank (12) is in fixed communication with the inner wall of the compressed air storage tank (12), and a one-way valve (1215) is fixedly installed on the surface of the output pipe (1214).

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