CN111412124A

CN111412124A - Vacuum pump

Info

Publication number: CN111412124A
Application number: CN202010312621.9A
Authority: CN
Inventors: 汤泽波; 徐湘华
Original assignee: Tongling Tongfei Technology Co ltd
Current assignee: Tongling Tongfei Technology Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-07-14

Abstract

The invention belongs to the technical field of vacuum pumps, and particularly relates to a vacuum pump which comprises a cylinder, a piston, belt wheels and an air valve, wherein the cylinder comprises an air inlet pipe and an air outlet pipe, a lower connecting block is fixed at the top end of the air inlet pipe, the top end of the lower connecting block is rotatably connected with an outer ring, an inner ring is fixedly arranged on the inner side wall of the outer ring through a mounting block, a filter plate is arranged at the bottom of the inner ring, more than two rectangular grooves are equidistantly arranged on the side wall of the inner ring along the circumferential direction of the inner ring, and more than two slide rail groups are equidistantly arranged on; the reciprocating vacuum pump is provided with the rotating inner ring, so that solid particles in gas are intercepted when passing through the inner ring, the solid particles are discharged out of the inner ring by utilizing centrifugal force, and meanwhile, the discharged gas is used for carrying the solid particles out of the inner ring, so that the gas with the solid particles can be extracted by the reciprocating vacuum pump, and the use convenience of the reciprocating vacuum pump is improved.

Description

Vacuum pump

Technical Field

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

Background

The vacuum pump refers to a device or equipment for obtaining vacuum by pumping a pumped container by using a mechanical, physical, chemical or physicochemical method. In general, a vacuum pump is a device for improving, generating and maintaining a vacuum in a certain closed space by various methods. According to the working principle of vacuum pumps, vacuum pumps can be basically divided into two types, namely a gas capture pump and a gas transmission pump, and are widely applied to industries such as metallurgy, chemical engineering, food, electronic coating and the like.

The reciprocating vacuum pump is a dry vacuum pump which sucks and discharges gas by means of reciprocating movement of a piston in a cylinder, and therefore, the reciprocating vacuum pump cannot be used to extract gas with solid particles; usually, when gas with solid particles is extracted, a filtering device is required to be additionally arranged at an inlet of a reciprocating vacuum pump, and the filtering device is cleaned at regular time; however, when the filtering device installed in a narrow space or buried underground is cleaned, time and labor are wasted, and the sealing performance of the vacuum pump is also affected by frequently disassembling the reciprocating vacuum pump, so that the use of the reciprocating vacuum pump is not convenient enough.

Disclosure of Invention

In order to make up for the defects of the prior art, the vacuum pump provided by the invention has the advantages that the rotating inner ring is arranged, so that solid particles in gas are intercepted when passing through the inner ring, the solid particles are discharged out of the inner ring by using centrifugal force, and meanwhile, the discharged gas is used for carrying the solid particles out of the inner ring, so that the gas with the solid particles can be extracted by the reciprocating vacuum pump, and the use convenience of the reciprocating vacuum pump is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a vacuum pump, which comprises a cylinder, a piston, a belt wheel and an air valve, wherein the cylinder comprises an air inlet pipe and an air outlet pipe, the top end of the air inlet pipe is fixedly provided with a lower connecting block, the top end of the lower connecting block is rotatably connected with an outer ring, the inner side wall of the outer ring is fixedly provided with an inner ring through a mounting block, the bottom of the inner ring is provided with a filter plate, the side wall of the inner ring is provided with more than two rectangular grooves at equal intervals along the circumferential direction, the outer side wall of the inner ring is provided with more than two slide rail groups at equal intervals along the circumferential direction, each slide rail group comprises two slide rails which are arranged up and down, a slide block is movably connected between the two slide rails in the same slide rail group, the slide block is tightly attached to the outer side wall of the inner ring, the two slide rail side walls in the same slide rail group are, the straight plate is made of iron metal materials, the top end of the inner ring is rotatably connected with an upper connecting block, one side, far away from the belt wheel, of the cylinder is fixedly provided with a driving motor, the output shaft end of the driving motor is rotatably connected with the outer ring through a synchronous belt, the outer side wall of the upper connecting block is fixedly provided with a protective cover, the upper connecting block and the lower connecting block are of a cavity structure, the side wall of the cylinder is provided with a first pipe, the other end of the first pipe is communicated with the cavity of the upper connecting block, the first pipe is used for communicating the cylinder with the upper connecting block, the bottom of the lower connecting block is provided with a second pipe, the second pipe is communicated with the inner cavity of the air outlet pipe, the second pipe is used for communicating the lower connecting block with the air outlet pipe, a controller is arranged in the protective cover and used for controlling the work of the vacuum pump, and during the work, therefore, the reciprocating vacuum pump cannot be used to extract gas with solid particles; usually, when gas with solid particles is extracted, a filtering device is required to be additionally arranged at an inlet of a reciprocating vacuum pump, and the filtering device is cleaned at regular time; however, the cleaning of the filtering device installed in a narrow space or buried underground is time-consuming and labor-consuming, and the sealing performance of the vacuum pump is also affected by frequently disassembling the reciprocating vacuum pump, so that the use of the reciprocating vacuum pump is not convenient enough; the driving motor drives the synchronous belt to rotate through the arrangement of the driving motor, so that the outer ring rotates; the rotating outer ring enables the inner ring and the sliding block arranged on the inner ring to rotate; when the piston moves, air is pumped from the air inlet pipe, so that the air enters the upper connecting block and enters the inner ring; the gas entering the inner ring passes through the filter plate under the attraction of the piston and then enters the inner cavity of the cylinder, and solid particles in the gas are retained in the inner cavity of the inner ring under the blocking of the filter plate and are thrown onto the inner side wall of the inner ring under the action of centrifugal force along with the rotation of the inner ring; when the piston moves reversely, gas in the cylinder is exhausted out of the cylinder, and meanwhile the controller controls the electromagnet to work, so that the electromagnet generates suction to the sliding block, and the sliding block slides towards the corresponding electromagnet; the relative position of the sliding block and the rectangular groove is changed, so that the inner ring and the outer ring are in a communicated state, and solid particles on the inner side wall of the inner ring enter a cavity between the outer ring and the inner ring; before the piston has the tendency of air extraction, the electromagnet stops working, and the sliding block returns to the initial position under the action of the return spring, so that the rectangular groove is blocked, and the outer ring and the inner ring cannot be communicated; when the piston performs air extraction movement, gas enters the inner ring, and solid particles cannot enter the inner ring because the inner ring and the outer ring are in an isolated state; when the gas is exhausted outwards, part of the gas enters the first pipe, the gas enters the inner cavity of the upper connecting block along with the first pipe, then reaches the inner cavity of the lower connecting block through the area between the outer ring and the inner ring, and finally the gas enters the gas outlet pipe from the second pipe; gas entering from the first pipe flushes the inner cavity of the outer ring, so that solid particles between the outer ring and the inner ring are flushed into the gas outlet pipe; the solid particles are discharged to the outside of the inner ring through the arrangement of the sliding block, and the solid particles are brought into the gas outlet pipe by the gas entering from the first pipe, so that the discharge of the solid particles is realized; the solid particles are separated from the gas, so that the reciprocating vacuum pump can be used for conveying the gas with the solid particles, and the application range of the reciprocating vacuum pump is expanded; the solid particles are brought into the gas outlet pipe, so that the solid particles do not need to be cleaned additionally, the cleaning amount is reduced, and the use convenience of the reciprocating vacuum pump is improved.

Preferably, the top end of the filter plate is rotatably connected with a rotating shaft, fan blades and cleaning rods are fixed on the surface of the rotating shaft, and when the filter plate works, solid particles are clamped in filtering holes of the filter plate in the process that the filter plate blocks the solid particles, so that the filtering effect of the filter plate is reduced; the arrangement of the fan blades enables the air to drive the fan blades to rotate when passing through the inner ring, so that the fan blades drive the rotating shaft to rotate; the rotating shaft drives the cleaning rod to rotate on the surface of the filter plate, so that the cleaning rod cleans the surface of the filter plate, and solid particles clamped on the filter plate are separated from the filter plate; simultaneously, the rotation of flabellum and cleaning rod drives the gas that passes through in the ring and produces rotatoryly, and rotatory gas blows solid particle, not only is favorable to the separation of solid particle and filter, still makes solid particle enter into the rectangular channel to be convenient for solid particle enter into the outer loop.

Preferably, the direction of rotation of the fan blade is opposite to the direction of rotation of the inner ring, and during operation, the direction of rotation of the fan blade is opposite to the direction of rotation of the inner ring, so that the fan blade drives gas to generate a direction of rotation opposite to that of the inner ring during rotation, solid particles move in the inner ring in an unchangeable mode, the relative rotation speed difference between the solid particles and the filter plate is increased, and adhesion between the solid particles and the filter plate is reduced.

Preferably, more than two triangular stop blocks are arranged on the inner side wall of the inner ring at equal intervals along the circumferential direction of the inner side wall, the triangular stop blocks are used for recovering and guiding solid particles, and when the inner ring works, the solid particles are scattered and distributed on the inner side wall of the inner ring, so that the solid particles cannot be completely discharged when the slide block is opened; the triangular stop block is arranged to collide with the solid particles when rotating, so that the solid particles move towards the inner side wall of the inner ring; meanwhile, the inclined plane of the triangular stop block has a guiding function, so that solid particles slide into the rectangular groove after contacting the triangular stop block, and the solid particles are concentrated in the rectangular groove to be convenient for discharging.

Preferably, the top of the inner side wall of the inner ring is provided with a water absorption cake, and the surface of the triangular block is fixed with water absorption cloth, so that when the reciprocating vacuum pump works, if certain moisture exists in the air, the reciprocating vacuum pump is damaged; when the gas enters the inner ring, the gas contacts the water absorption cake and passes through the edge of the water absorption cake, and when the gas contacts the water absorption cake, the water absorption cake absorbs the moisture in the gas, so that the humidity of the gas is reduced; after the gas passes through the water absorption cake, the gas enters the middle part of the inner ring, and the rotating triangular stop block impacts the gas, so that the water absorption cloth on the triangular stop block performs secondary water absorption treatment on the gas, and the moisture content in the gas is reduced again; after being absorbed, the water moves to the inner side wall of the inner ring under the action of centrifugal force, enters the rectangular groove under the guiding action of the triangular stop block, finally enters between the outer ring and the inner ring and is discharged into the air outlet pipe; after moisture in the gas is absorbed, the gas becomes dry, so that the reciprocating vacuum pump can work normally, and the application range of the reciprocating vacuum pump is enlarged; simultaneously, the cloth that absorbs water plays the cushioning effect to the collision between solid particle and the triangle dog, has not only reduced the noise that the striking produced, still protects the triangle dog to the life of triangle dog has been prolonged.

Preferably, the water absorption cake and the water absorption cloth are both formed by mixing water absorption resin and water absorption sponge, and when the water absorption cake and the water absorption cloth work, the water absorption cake and the water absorption cloth are formed by mixing the water absorption resin and the water absorption sponge, so that the water absorption cake and the water absorption cloth have excellent water absorption performance, and meanwhile, the water in the water absorption sponge is easier to extrude, so that the water absorption cake and the water absorption cloth have better water outlet performance; in the process of rotation of the water absorption cake and the water absorption cloth, water is moved to the inner side wall part of the inner ring while absorbing water, and water drops overflow after a large amount of water is collected on the water absorption cake and the water absorption cloth, so that the water absorption cake and the water absorption cloth can be repeatedly used without frequent replacement and maintenance.

The invention has the following beneficial effects:

1. according to the vacuum pump, the rotating inner ring is arranged, so that solid particles in gas are intercepted when the gas passes through the inner ring, the solid particles are discharged out of the inner ring by using centrifugal force, and the discharged gas is used for carrying the solid particles out of the inner ring, so that the gas with the solid particles can be extracted by the reciprocating vacuum pump, and the use convenience of the reciprocating vacuum pump is improved.

2. According to the vacuum pump, the water absorption cake and the water absorption cloth are arranged to absorb water in the gas, so that the damage hidden danger of the reciprocating vacuum pump is reduced, and the application range of the reciprocating vacuum pump is widened.

Drawings

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

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

FIG. 2 is a left side view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a three-dimensional view of the inner ring;

FIG. 5 is a schematic diagram showing the position relationship of the triangular stopper of the inner ring;

in the figure: the device comprises a cylinder 1, a belt wheel 2, an air inlet pipe 3, an air outlet pipe 4, a lower connecting block 5, an outer ring 6, an inner ring 7, a filter plate 8, a rectangular groove 9, a sliding rail 10, a sliding block 11, a straight plate 12, an electromagnet 13, a return spring 14, an upper connecting block 15, a driving motor 16, a shield 17, a first pipe 18, a second pipe 19, fan blades 20, a cleaning rod 21, a triangular stop block 22, a water absorption cake 23 and water absorption cloth 24.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the vacuum pump of the present invention comprises a cylinder 1, a piston, a belt wheel 2 and an air valve, wherein the cylinder 1 comprises an air inlet pipe 3 and an air outlet pipe 4, the top end of the air inlet pipe 3 is fixed with a lower connecting block 5, the top end of the lower connecting block 5 is rotatably connected with an outer ring 6, the inner side wall of the outer ring 6 is fixedly provided with an inner ring 7 through a mounting block, the bottom of the inner ring 7 is provided with a filter plate 8, the side wall of the inner ring 7 is provided with more than two rectangular grooves 9 at equal intervals along the circumferential direction, the outer side wall of the inner ring 7 is provided with more than two slide rail sets at equal intervals along the circumferential direction, each slide rail set comprises two slide rails 10 arranged up and down, a slide block 11 is movably connected between the two slide rails 10 in the same slide rail set, the slide block 11 is tightly attached to the outer side wall of the, an electromagnet 13 is fixed on the side wall of the straight plate 12, two reset springs 14 are fixed between the straight plate 12 and the corresponding sliding block 11, the straight plate 12 is made of iron metal materials, the top end of the inner ring 7 is rotatably connected with an upper connecting block 15, one side, away from the belt wheel 2, of the cylinder 1 is fixedly provided with a driving motor 16, the output shaft end of the driving motor 16 is rotatably connected with the outer ring 6 through a synchronous belt, the outer side wall of the upper connecting block 15 is fixedly provided with a protective cover 17, the upper connecting block 15 and the lower connecting block 5 are of a cavity structure, the side wall of the cylinder 1 is provided with a first pipe 18, the other end of the first pipe 18 is communicated with the cavity of the upper connecting block 15, the first pipe 18 is used for communicating the cylinder 1 with the upper connecting block 15, the bottom of the lower connecting block 5 is provided with a second pipe 19, the second pipe 19 is communicated with the inner cavity of the air outlet, a controller is arranged in the protective cover 17 and is used for controlling the vacuum pump to work, and when the vacuum pump works, the reciprocating vacuum pump is a dry vacuum pump and sucks and exhausts gas by means of reciprocating motion of a piston in the cylinder 1, so that the reciprocating vacuum pump cannot be used for sucking gas with solid particles; usually, when gas with solid particles is extracted, a filtering device is required to be additionally arranged at an inlet of a reciprocating vacuum pump, and the filtering device is cleaned at regular time; however, the cleaning of the filtering device installed in a narrow space or buried underground is time-consuming and labor-consuming, and the sealing performance of the vacuum pump is also affected by frequently disassembling the reciprocating vacuum pump, so that the use of the reciprocating vacuum pump is not convenient enough; the driving motor 16 drives the synchronous belt to rotate through the arrangement of the driving motor 16, so that the outer ring 6 rotates; the rotating outer ring 6 enables the inner ring 7 and a sliding block 11 arranged on the inner ring 7 to rotate; when the piston moves, air is sucked from the air inlet pipe 3, so that the air enters the upper connecting block 15 and enters the inner ring 7; the gas entering the inner ring 7 passes through the filter plate 8 under the attraction of the piston and then enters the inner cavity of the cylinder 1, and solid particles in the gas are retained in the inner cavity of the inner ring 7 under the blocking of the filter plate 8 and are thrown onto the inner side wall of the inner ring 7 under the action of centrifugal force along with the rotation of the inner ring 7; when the piston moves reversely, the gas in the cylinder 1 is exhausted out of the cylinder 1, and meanwhile, the controller controls the electromagnet 13 to work, so that the electromagnet 13 generates suction to the sliding block 11, and the sliding block 11 slides towards the corresponding electromagnet 13; the relative position of the sliding slide block 11 and the rectangular groove 9 is changed, so that the inner ring 7 and the outer ring 6 are in a communication state, and solid particles on the inner side wall of the inner ring 7 enter a cavity between the outer ring 6 and the inner ring 7; before the piston has the tendency of air suction, the electromagnet 13 stops working, the slide block 11 returns to the initial position under the action of the return spring 14, so that the rectangular groove 9 is blocked, and the outer ring 6 and the inner ring 7 cannot be communicated; when the piston performs air extraction movement, gas enters the inner ring 7, and solid particles cannot enter the inner ring 7 because the inner ring 7 and the outer ring 6 are in an isolated state; when the gas is exhausted outwards, part of the gas enters the first pipe 18, the gas enters the inner cavity of the upper connecting block 15 along with the first pipe 18, then passes through the area between the outer ring 6 and the inner ring 7 to reach the inner cavity of the lower connecting block 5, and finally the gas enters the gas outlet pipe 4 from the second pipe 19; gas entering from the first pipe 18 flushes the inner cavity of the outer ring 6, so that solid particles between the outer ring 6 and the inner ring 7 are flushed into the gas outlet pipe 4; the solid particles are discharged to the outside of the inner ring 7 through the arrangement of the sliding block 11, so that the solid particles are brought into the gas outlet pipe 4 by the gas entering from the first pipe 18, and the discharge of the solid particles is realized; the solid particles are separated from the gas, so that the reciprocating vacuum pump can be used for conveying the gas with the solid particles, and the application range of the reciprocating vacuum pump is expanded; the solid particles are brought into the gas outlet pipe 4 so that the solid particles do not need additional cleaning, thereby reducing the cleaning amount and further improving the use convenience of the reciprocating vacuum pump.

As a specific embodiment of the present invention, the top end of the filter plate 8 is rotatably connected with a rotating shaft, and the surface of the rotating shaft is fixed with fan blades 20 and cleaning rods 21, when the filter plate 8 works, in the process of blocking solid particles, the solid particles are clamped in the filtering holes of the filter plate 8, thereby reducing the filtering effect of the filter plate 8; the arrangement of the fan blades 20 enables the air to drive the fan blades 20 to rotate when passing through the inner ring 7, so that the fan blades 20 drive the rotating shaft to rotate; the rotating shaft drives the cleaning rod 21 to rotate on the surface of the filter plate 8, so that the cleaning rod 21 cleans the surface of the filter plate 8, and solid particles clamped on the filter plate 8 are separated from the filter plate 8; meanwhile, the rotation of the fan blades 20 and the cleaning rods 21 drives the gas passing through the inner ring 7 to rotate, and the rotating gas blows solid particles, so that the separation of the solid particles from the filter plate 8 is facilitated, and the solid particles enter the rectangular groove 9, so that the solid particles can enter the outer ring 6 conveniently.

As a specific embodiment of the present invention, the direction of the fan blade 20 is opposite to the rotation direction of the inner ring 7, and in operation, the direction of the fan blade 20 is opposite to the rotation direction of the inner ring 7, so that the fan blade 20 drives air to generate a rotation direction opposite to the inner ring 7 when rotating, so that the solid particles move in the inner ring 7 indefinitely, and the relative rotation speed difference between the solid particles and the filter plate 8 is increased, thereby reducing the adhesion between the solid particles and the filter plate 8.

As a specific embodiment of the present invention, two or more triangular stoppers 22 are equidistantly disposed on the inner sidewall of the inner ring 7 along the circumferential direction thereof, the triangular stoppers 22 are used for recovering and guiding solid particles, and during operation, the solid particles are scattered on the inner sidewall of the inner ring 7, so that the solid particles cannot be completely discharged when the slide block 11 is opened; the triangular stop block 22 is arranged to enable the triangular stop block 22 to collide with solid particles when rotating, so that the solid particles move towards the inner side wall direction of the inner ring 7; meanwhile, the inclined surface of the triangular stopper 22 has a guiding function, so that the solid particles slide into the rectangular groove 9 after contacting the triangular stopper 22, and the solid particles are concentrated in the rectangular groove 9 to facilitate the discharge of the solid particles.

As a specific embodiment of the invention, a water absorption cake 23 is arranged at the top of the inner side wall of the inner ring 7, a water absorption cloth 24 is fixed on the surface of the triangular stopper 22, and when the reciprocating vacuum pump works, if certain moisture exists in the gas, the reciprocating vacuum pump is damaged; when the air enters the inner ring 7, the air contacts the water absorption cake 23 and passes through the edge of the water absorption cake 23, and when the air contacts the water absorption cake 23, the water absorption cake 23 absorbs the moisture in the air, so that the humidity of the air is reduced; after the air passes through the water absorption cake 23, the air enters the middle part of the inner ring 7, and the rotating triangular stop block 22 impacts the air, so that the water absorption cloth 24 on the triangular stop block 22 performs secondary water absorption treatment on the air, and the moisture content in the air is reduced again; after being absorbed, the water moves to the inner side wall of the inner ring 7 under the action of centrifugal force, enters the rectangular groove 9 under the guiding action of the triangular stop block 22, finally enters between the outer ring 6 and the inner ring 7 and is discharged into the air outlet pipe 4; after moisture in the gas is absorbed, the gas becomes dry, so that the reciprocating vacuum pump can work normally, and the application range of the reciprocating vacuum pump is enlarged; meanwhile, the water absorption cloth 24 plays a role in buffering collision between the solid particles and the triangular stop block 22, so that noise generated by collision is reduced, and the triangular stop block 22 is protected, so that the service life of the triangular stop block 22 is prolonged.

As a specific embodiment of the present invention, the water-absorbing cake 23 and the water-absorbing cloth 24 are both made by mixing water-absorbing resin and water-absorbing sponge, and when in use, the water-absorbing cake 23 and the water-absorbing cloth 24 are made by mixing water-absorbing resin and water-absorbing sponge, so that the water-absorbing cake 23 and the water-absorbing cloth 24 have excellent water absorption, and meanwhile, because water in the water-absorbing sponge is easier to be squeezed out, the water-absorbing cake 23 and the water-absorbing cloth 24 have better water outlet; in the process of rotation of the water absorption cake 23 and the water absorption cloth 24, water is moved to the inner side wall part of the inner ring 7 while absorbing water, and water drops overflow after a large amount of water is collected on the water absorption cake 23 and the water absorption cloth 24, so that the water absorption cake 23 and the water absorption cloth 24 can be repeatedly used without frequent replacement and maintenance.

In operation, the reciprocating vacuum pump is a dry vacuum pump which sucks and discharges gas by means of reciprocating motion of a piston in a cylinder 1, and therefore, the reciprocating vacuum pump cannot be used to suck gas with solid particles; usually, when gas with solid particles is extracted, a filtering device is required to be additionally arranged at an inlet of a reciprocating vacuum pump, and the filtering device is cleaned at regular time; however, the cleaning of the filtering device installed in a narrow space or buried underground is time-consuming and labor-consuming, and the sealing performance of the vacuum pump is also affected by frequently disassembling the reciprocating vacuum pump, so that the use of the reciprocating vacuum pump is not convenient enough; the driving motor 16 drives the synchronous belt to rotate through the arrangement of the driving motor 16, so that the outer ring 6 rotates; the rotating outer ring 6 enables the inner ring 7 and a sliding block 11 arranged on the inner ring 7 to rotate; when the piston moves, air is sucked from the air inlet pipe 3, so that the air enters the upper connecting block 15 and enters the inner ring 7; the gas entering the inner ring 7 passes through the filter plate 8 under the attraction of the piston and then enters the inner cavity of the cylinder 1, and solid particles in the gas are retained in the inner cavity of the inner ring 7 under the blocking of the filter plate 8 and are thrown onto the inner side wall of the inner ring 7 under the action of centrifugal force along with the rotation of the inner ring 7; when the piston moves reversely, the gas in the cylinder 1 is exhausted out of the cylinder 1, and meanwhile, the controller controls the electromagnet 13 to work, so that the electromagnet 13 generates suction to the sliding block 11, and the sliding block 11 slides towards the corresponding electromagnet 13; the relative position of the sliding slide block 11 and the rectangular groove 9 is changed, so that the inner ring 7 and the outer ring 6 are in a communication state, and solid particles on the inner side wall of the inner ring 7 enter a cavity between the outer ring 6 and the inner ring 7; before the piston has the tendency of air suction, the electromagnet 13 stops working, the slide block 11 returns to the initial position under the action of the return spring 14, so that the rectangular groove 9 is blocked, and the outer ring 6 and the inner ring 7 cannot be communicated; when the piston performs air extraction movement, gas enters the inner ring 7, and solid particles cannot enter the inner ring 7 because the inner ring 7 and the outer ring 6 are in an isolated state; when the gas is exhausted outwards, part of the gas enters the first pipe 18, the gas enters the inner cavity of the upper connecting block 15 along with the first pipe 18, then passes through the area between the outer ring 6 and the inner ring 7 to reach the inner cavity of the lower connecting block 5, and finally the gas enters the gas outlet pipe 4 from the second pipe 19; gas entering from the first pipe 18 flushes the inner cavity of the outer ring 6, so that solid particles between the outer ring 6 and the inner ring 7 are flushed into the gas outlet pipe 4; the solid particles are discharged to the outside of the inner ring 7 through the arrangement of the sliding block 11, so that the solid particles are brought into the gas outlet pipe 4 by the gas entering from the first pipe 18, and the discharge of the solid particles is realized; the solid particles are separated from the gas, so that the reciprocating vacuum pump can be used for conveying the gas with the solid particles, and the application range of the reciprocating vacuum pump is expanded; the solid particles are brought into the gas outlet pipe 4 so that the solid particles do not need additional cleaning, thereby reducing the cleaning amount and further improving the use convenience of the reciprocating vacuum pump.

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.

Claims

1. The utility model provides a vacuum pump, includes cylinder (1), piston, band pulley (2) and pneumatic valve, cylinder (1) is including intake pipe (3) and outlet duct (4), its characterized in that: the top end of the air inlet pipe (3) is fixed with a lower connecting block (5), the top end of the lower connecting block (5) is rotatably connected with an outer ring (6), the inner side wall of the outer ring (6) is fixedly provided with an inner ring (7) through a mounting block, the bottom of the inner ring (7) is provided with a filter plate (8), the side wall of the inner ring (7) is provided with more than two rectangular grooves (9) at equal intervals along the circumferential direction, the outer side wall of the inner ring (7) is provided with more than two slide rail groups at equal intervals along the circumferential direction, each slide rail group comprises two slide rails (10) which are arranged up and down, a slide block (11) is movably connected between the two slide rails (10) in the same slide rail group, the slide block (11) is tightly attached to the outer side wall of the inner ring (7), the side walls of the two slide rails (10) in the same slide rail group are both fixed with straight plates (12, the improved cylinder is characterized in that two reset springs (14) are fixed between the straight plate (12) and the corresponding sliding block (11), the straight plate (12) is made of iron metal materials, an upper connecting block (15) is rotationally connected to the top end of the inner ring (7), a driving motor (16) is fixed to one side, away from the belt wheel (2), of the cylinder (1), the output shaft end of the driving motor (16) is rotationally connected with the outer ring (6) through a synchronous belt, a protective cover (17) is fixed to the outer side wall of the upper connecting block (15), the upper connecting block (15) and the lower connecting block (5) are of a cavity structure, a first pipe (18) is arranged on the side wall of the cylinder (1), the other end of the first pipe (18) is communicated with the cavity of the upper connecting block (15), the first pipe (18) is used for communicating the cylinder (1) and the upper connecting block (15), and a second pipe (19) is, no. two pipe (19) and outlet duct (4) inner chamber intercommunication, No. two pipe (19) are used for communicateing lower connecting block (5) and outlet duct (4), be equipped with the controller in guard shield (17), the controller is used for controlling the work of vacuum pump.

2. A vacuum pump according to claim 1, wherein: the top end of the filter plate (8) is rotatably connected with a rotating shaft, and fan blades (20) and a cleaning rod (21) are fixed on the surface of the rotating shaft.

3. A vacuum pump according to claim 2, wherein: the direction of rotation of the fan blades (20) is opposite to the direction of rotation of the inner ring (7).

4. A vacuum pump according to claim 3, wherein: more than two triangular stop blocks (22) are arranged on the inner side wall of the inner ring (7) at equal intervals along the circumferential direction of the inner side wall, and the triangular stop blocks (22) are used for recovering and guiding solid particles.

5. A vacuum pump according to claim 4, wherein: the top of the inner side wall of the inner ring (7) is highly provided with a water absorption cake (23), and the surface of the triangular stop block (22) is fixed with water absorption cloth (24).

6. A vacuum pump according to claim 5, wherein: the water absorption cake (23) and the water absorption cloth (24) are both formed by mixing water absorption resin and water absorption sponge.