CN213331519U

CN213331519U - Anti-suck-back circulating water type multipurpose vacuum pump

Info

Publication number: CN213331519U
Application number: CN202022349899.1U
Authority: CN
Inventors: 廖恺; 丁晓航; 郭东浩
Original assignee: Guangzhou Siyou New Material Technology Co ltd
Current assignee: Guangzhou Siyou New Material Technology Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-06-01
Anticipated expiration: 2030-10-20

Abstract

The utility model belongs to the technical field of the technique of vacuum pump and specifically relates to a prevent suck-back circulating water formula multi-purpose vacuum pump is related to, it includes the pump body, the pump body is provided with the exhaust tube, the fixed bulge loop that is provided with of exhaust tube internal perisporium, the internal perisporium of exhaust tube slides and is connected with the loose collar, the loose collar is located one side that the pump body was kept away from to the bulge loop, loose collar fixedly connected with shutoff piece, the shutoff piece is located one side that the bulge loop is close to the pump body, the bulge loop inboard forms inlet channel, the cross-sectional area of shutoff piece is greater than inlet channel's cross-sectional area, be provided with in the exhaust tube and be used for the shrink piece that is close to with shutoff piece and bulge loop, the shutoff piece supports the back with the. This application has when hydrologic cycle formula vacuum pump suddenly the time of stopping the pump, and the effect in the container of being evacuated is difficult to the suck-back entering by the evacuation to the water in the vacuum pump.

Description

Anti-suck-back circulating water type multipurpose vacuum pump

Technical Field

The application relates to the technical field of vacuum pumps, in particular to a reverse-suction-preventing circulating water type multipurpose vacuum pump.

Background

The circulating water type vacuum pump is a vacuum pump which takes water as a medium to change the volume of a pump cavity so as to realize the purpose of pumping air to an evacuated container to obtain vacuum.

Chinese patent with publication number CN208734548U discloses a circulating water type vacuum pump, which comprises a circulating water type vacuum pump body, wherein a partition board is arranged at the top of the circulating water type vacuum pump body, a box body is arranged at the top of the left side of the partition board, and an air suction nozzle is arranged at the left side of the box body. When the vacuum pumping is needed, the air pumping nozzle is connected with the container to be vacuumized.

In view of the above-mentioned related art, the inventor believes that there is a defect that when the circulating water vacuum pump is suddenly stopped, a suck-back phenomenon is easily generated at the suction nozzle, so that water in the circulating water vacuum pump is easily sucked into the evacuated container.

SUMMERY OF THE UTILITY MODEL

In order to improve when water circulating vacuum pump stops the pump suddenly, the defect in the container of going into by the evacuation is easily inhaled to water, this application provides a prevent suck-back circulating water formula multi-purpose vacuum pump.

The application provides a prevent multipurpose vacuum pump of suck-back circulation water formula adopts following technical scheme:

the utility model provides a prevent multi-purpose vacuum pump of suck-back circulating water formula, includes the pump body, the pump body is provided with the exhaust tube, the fixed bulge loop that is provided with of exhaust tube internal perisporium, the internal perisporium of exhaust tube slides and is connected with the loose collar, the loose collar is located one side that the pump body was kept away from to the bulge loop, loose collar fixedly connected with shutoff piece, the shutoff piece is located one side that the bulge loop is close to the pump body, the bulge loop inboard forms inlet channel, the cross-sectional area of shutoff piece is greater than inlet channel's cross-sectional area, be provided with in the exhaust tube and be used for the shrink piece that is close to shutoff piece and bulge loop, the shutoff piece supports the back with the bulge loop, the shutoff piece.

By adopting the technical scheme, the convex ring is fixedly arranged on the inner peripheral wall of the exhaust pipe, the plugging block is arranged in the exhaust pipe in a sliding way, when the vacuum pump is used for vacuumizing the container, the blocking block is pushed by the sucked air flow to be separated from the convex ring, the sucked air flow can enter the vacuum pump from the air inlet channel, when the vacuum pump is stopped suddenly, because the air pressure in the pumped container is less than the air pressure in the vacuum pump, the water in the vacuum pump is easy to suck back into the pumped container, by arranging the contraction part which is used for mutually approaching and abutting the plugging block and the convex ring in the exhaust pipe, when the vacuum pump generates the suck-back phenomenon, the blocking block is simultaneously pushed by the suck-back airflow and propped by the contraction piece, thereby the blocking block is tightly propped against the convex ring, the blocking block is tightly propped against the convex ring to block the air inlet channel, so that the water in the circulating water type vacuum pump is not easy to suck back into the vacuumized container.

Preferably, the constriction member includes a first magnet and a second magnet, the first magnet is disposed on the blocking piece, the second magnet is disposed on the convex ring, and the first magnet and the second magnet attract each other.

Through adopting above-mentioned technical scheme, the shrink piece includes first magnet and second magnet, and first magnet setting is on the shutoff piece, and second magnet setting is on the bulge loop, because first magnet and second magnet attract each other to realized bulge loop and shutoff piece and be close to each other and support tight effect.

Preferably, the plugging block is cylindric setting, first magnet is located the inside of plugging block, first magnet is the ring form setting, second magnet is located inside the bulge loop, first magnet and second magnet are just right.

Through adopting above-mentioned technical scheme, because first magnet is located the inside of shutoff piece, the second magnet is located the bulge loop inside to reduce first magnet and second magnet and occupy the space in the aspiration tube, in addition, first magnet and second magnet are just right, have further improved the attraction of shrink piece.

Preferably, the plugging block is provided with a first sealing ring, the first sealing ring is positioned on the side wall of the plugging block close to one side of the convex ring, the convex ring is provided with a second sealing ring, and the second sealing ring is just opposite to the first sealing ring.

Through adopting above-mentioned technical scheme, through being provided with first sealing ring at the shutoff piece, be provided with the second sealing ring on the bulge loop, when improving shutoff piece and bulge loop and supporting tightly, the leakproofness between shutoff piece and the bulge loop has further improved the anti-suck-back effect of vacuum pump.

Preferably, the one end that the bulge loop was kept away from to the shutoff piece is provided with the holding frame, form the holding chamber in the holding frame, the shutoff piece setting is kept away from to the opening in holding chamber, the holding intracavity is provided with the nylon cloth.

Through adopting above-mentioned technical scheme, the one end of keeping away from the bulge loop at the shutoff piece is provided with the holding frame, forms the holding chamber in the holding frame, and the shutoff piece setting is kept away from to the opening in holding chamber, and the holding intracavity is provided with nylon cloth, and the setting of nylon cloth has increased when the vacuum pump takes place the suck-back phenomenon, the resistance between suck-back air current and the shutoff piece to make shutoff piece and bulge loop support tightly, and then improved the suck-back prevention effect of vacuum pump.

Preferably, the accommodating cavity is arranged in a spherical crown shape, and the nylon cloth is tightly attached to the accommodating frame.

By adopting the technical scheme, because the holding cavity is arranged in a spherical crown shape, the nylon cloth in the holding cavity is tightly attached to the holding frame, so that the resistance between the suck-back airflow and the plugging block is increased, and the suck-back prevention effect of the thermal vacuum pump is improved.

Preferably, the contraction part comprises a spring, the spring is fixedly arranged on the inner side wall of the exhaust pipe, the spring is positioned on one side, away from the convex ring, of the movable ring, the spring is fixedly connected with the movable ring, and the spring is in a stretching state.

Through adopting above-mentioned technical scheme, the shrink piece includes the spring, and spring one end is fixed to be set up on the inside wall of exhaust tube, the spring other end and activity ring fixed connection to realize that the bulge loop can be close to each other and support tight effect with the shutoff piece.

Preferably, one side of the blocking block, which is close to the movable ring, is provided with a groove, the cross-sectional area of the groove is smaller than that of the air inlet channel, and nylon cloth is arranged in the groove.

Through adopting above-mentioned technical scheme, be provided with the recess in one side that the shutoff piece is close to the activity ring, be provided with nylon cloth in the recess to the increase vacuum pump is when the evacuation, and the resistance between suction air current and the shutoff piece, and then reduces the probability that the inlet channel in the exhaust tube can't be opened when the evacuation.

In summary, the present application includes at least one of the following beneficial technical effects:

the convex ring is fixedly arranged on the inner peripheral wall of the exhaust pipe, the blocking block is arranged in the exhaust pipe in a sliding manner, the contraction piece which is used for enabling the blocking block and the convex ring to be close to and abutted against each other is arranged in the exhaust pipe, when the vacuum pump generates a suck-back phenomenon, the blocking block is simultaneously pushed by air flow and abutted by the contraction piece, so that the blocking block and the convex ring are abutted against each other, the exhaust pipe is blocked after the blocking block and the convex ring are abutted against each other, and water in the circulating water type vacuum pump is not easy to suck back into a vacuumized container;

the contraction piece comprises a first magnet and a second magnet, the first magnet is arranged on the blocking block, the second magnet is arranged on the convex ring, and the blocking block and the convex ring are close to each other and are abutted to each other due to the mutual attraction of the first magnet and the second magnet, so that the air inlet channel is blocked, and the contraction piece with the function is simple in structure and convenient to install;

through be provided with first sealing ring at the shutoff piece, be provided with the second sealing ring on the bulge loop, when improving shutoff piece and bulge loop and supporting tightly, the leakproofness between shutoff piece and the bulge loop.

Drawings

Fig. 1 is a schematic structural view of a suck-back prevention circulating water type multipurpose vacuum pump according to an embodiment of the present application.

Fig. 2 is a schematic view of an internal structure of the exhaust tube according to the first embodiment of the present application.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic view of a connection structure of the movable ring and the blocking block according to the first embodiment of the present application.

Fig. 5 is another view of fig. 4.

Fig. 6 is a schematic view of the internal structure of the exhaust tube according to the second embodiment of the present application.

Fig. 7 is a partially enlarged schematic view of a portion B in fig. 6.

Description of reference numerals: 1. A pump body; 2. a water tank; 3. an air extraction box; 4. an air exhaust pipe; 5. a convex ring; 6. a movable ring; 7. a first connection block; 8. a second connecting block; 9. a plugging block; 10. a first magnet; 11. a second magnet; 12. a first seal ring; 13. a second seal ring; 14. a groove; 15. an accommodating frame; 16. an accommodating cavity; 17. a spring; 18. a protrusion; 19. an intake passage.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The first embodiment is as follows: referring to fig. 1, the utility model discloses a prevent multipurpose vacuum pump of suck-back circulation water formula, including the pump body 1, the pump body 1 includes water tank 2 and exhaust chamber 3, and exhaust chamber 3 is fixed to be set up in the top of water tank 2, and exhaust chamber 3 is fixed to be provided with exhaust tube 4, and exhaust tube 4 is used for being connected with the container of waiting to take out, and exhaust tube 4 is hollow cylinder and sets up.

Referring to fig. 2 and 3, the inner peripheral wall of the exhaust pipe 4 is fixedly provided with a convex ring 5, an air inlet channel 19 is formed on the inner side of the convex ring 5, the inner peripheral wall of the exhaust pipe 4 is connected with a movable ring 6 in a sliding manner, the movable ring 6 is positioned on one side of the convex ring 5 far away from the exhaust box 3, and the movable ring 6 is arranged in a hollow cylindrical shape.

Referring to fig. 3 and 4, one side of the movable ring 6 close to the convex ring 5 is fixedly provided with a first connecting block 7, the first connecting block 7 is in a long strip shape, the first connecting block 7 faces one side of the convex ring 5 and is fixedly connected with a second connecting block 8, the second connecting block 8 is in a rod-shaped arrangement, the second connecting block 8 is far away from one end of the first connecting block 7 and is fixedly connected with a plugging block 9, and the plugging block 9 is located on one side of the convex ring 5 close to the air exhaust box 3.

The cross-section of plugging block 9 sets up to circular, and the diameter of plugging block 9 is greater than the diameter of inlet channel 19, is provided with in the exhaust tube 4 to be used for making plugging block 9 and bulge loop 5 support tight shrink piece, and when taking place the suck-back phenomenon in the inlet tube, plugging block 9 makes it support tightly with bulge loop 5 through the push action of air current and the effect of shrink piece, and after plugging block 9 supported tightly with bulge loop 5, air current and water in the circulating water formula vacuum pump were all by the separation in plugging block 9 one side.

The contraction part comprises a first magnet 10 fixedly arranged inside the blocking block 9 and a second magnet 11 fixedly arranged inside the convex ring 5, the first magnet 10 and the second magnet 11 are both arranged in a circular ring shape, the first magnet 10 and the second magnet 11 are the same in size, and the first magnet 10 and the second magnet 11 attract each other.

The fixed first sealing ring 12 that is provided with in one side that is close to the bulge loop 5 of plugging block 9, the bulge loop 5 is close to one side of plugging block 9 and is provided with second sealing ring 13, and first sealing ring 12 and second sealing ring 13 are made by asbestos rubber material in this embodiment. Through set up just right first sealing ring 12 and second sealing ring 13 on shutoff piece 9 and bulge loop 5 for the leakproofness when shutoff piece 9 supports tightly with bulge loop 5 improves, and then improves the anti-suck back effect of vacuum pump.

The fixed holding frame 15 that is provided with of one end that the bulge loop 5 was kept away from to shutoff piece 9, forms holding chamber 16 in the holding frame 15, and holding chamber 16 is the setting of spherical crown shape, and shutoff piece 9 is kept away from to the opening in holding chamber 16, and holding chamber 16 internal fixation is provided with nylon cloth, and nylon cloth pastes tightly with holding frame 15, and holding chamber 16 is used for increasing the resistance that one side and the air current that bulge loop 5 were kept away from to shutoff piece 9 equally with setting up of nylon cloth.

Referring to fig. 5, a spherical cap-shaped groove 14 is formed in one side of the blocking block 9 close to the movable ring 6, nylon cloth is attached to the inner wall of the groove 14, and the groove 14 and the nylon cloth are used for increasing the resistance between the blocking block 9 and the sucked air flow.

The implementation principle of the anti-suck-back circulating water type multipurpose vacuum pump in the embodiment of the application is as follows: when the vacuum pump carries out the evacuation to the container, the air current exhaust tube 4 enters into the pump body 1 in, because blocking piece 9 is seted up fluted 14 towards the one side of inhaling the air current, the recess 14 internal fixation is provided with nylon cloth for inhale the air current and to the increase of the resistance of blocking piece 9, thereby make the shutoff separate with bulge loop 5 soon, the air current passes through inlet channel 19 and enters into in the pump body 1 this moment.

When the vacuum pump stops the pump suddenly, the air current flows back from the inside intake pipe that flows backwards of vacuum pump, because the fixed holding frame 15 that is provided with in one side that the bulge loop 5 was kept away from to shutoff piece 9, holding frame 15 internal fixation is provided with nylon cloth, make the resistance grow between suck-back air current and the shutoff piece 9, make the shutoff remove toward the direction of lug soon, again because be provided with the first magnet 10 of 11 inter attractions of the inside second magnet of bulge loop 5 in the shutoff piece 9, thereby make the shutoff to support tightly with bulge loop 5 soon, thereby realize preventing the effect of suck-back.

Example two: the difference between this embodiment and the first embodiment is the structure of the constriction.

Referring to fig. 6 and 7, the contracting part comprises a spring 17, a protrusion 18 is fixedly arranged on the inner side wall of the exhaust pipe 4, the protrusion 18 is positioned on one side of the movable ring 6 far away from the convex ring 5, the spring 17 is fixedly arranged on the protrusion 18, one end of the spring 17 far away from the protrusion 18 is fixedly connected with the movable ring 6, and the spring 17 is in a stretching state.

When the suck-back phenomenon occurs in the air inlet pipe, the blocking block 9 and the bulge 18 are close to each other through the resistance between the suck-back airflow and the nylon cloth, and the spring 17 is in a stretching state, the spring 17 drives the movable ring 6 to move towards the bulge 18, the movable ring 6 drives the blocking block 9 to move towards the convex ring 5, so that the blocking block 9 and the convex ring 5 are tightly abutted, and the suck-back prevention effect of the vacuum pump is realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a prevent multi-purpose vacuum pump of suck-back circulating water formula, includes the pump body (1), the pump body (1) is provided with exhaust tube (4), its characterized in that: the fixed bulge loop (5) that is provided with of exhaust tube (4) internal perisporium, the internal perisporium of exhaust tube (4) slides and is connected with activity ring (6), one side that the pump body (1) was kept away from in activity ring (6) is located bulge loop (5), activity ring (6) fixedly connected with shutoff piece (9), shutoff piece (9) are located one side that bulge loop (5) are close to pump body (1), bulge loop (5) inboard forms inlet channel (19), the cross-sectional area of shutoff piece (9) is greater than the cross-sectional area of inlet channel (19), be provided with in exhaust tube (4) and be used for the shrink piece that is close to shutoff piece (9) and bulge loop (5), shutoff piece (9) and bulge loop (5) are to the back, inlet channel (19) shutoff is blocked with shutoff piece (9).

2. The anti-suck-back circulating water type multipurpose vacuum pump as claimed in claim 1, wherein: the contraction part comprises a first magnet (10) and a second magnet (11), the first magnet (10) is arranged on the blocking block (9), the second magnet (11) is arranged on the convex ring (5), and the first magnet (10) and the second magnet (11) attract each other.

3. The anti-suck-back circulating water type multipurpose vacuum pump as claimed in claim 2, wherein: the blocking piece (9) is cylindric setting, first magnet (10) are located the inside of blocking piece (9), first magnet (10) are the ring form setting, second magnet (11) are inside bulge loop (5), first magnet (10) and second magnet (11) are just right.

4. The suck-back prevention circulating water type multipurpose vacuum pump as claimed in claim 3, wherein: the blocking piece (9) is provided with first sealing ring (12), first sealing ring (12) are located blocking piece (9) and are close to on the lateral wall of bulge loop (5) one side, be provided with second sealing ring (13) on bulge loop (5), second sealing ring (13) are just right with first sealing ring (12).

5. The anti-suck-back circulating water type multipurpose vacuum pump as claimed in claim 4, wherein: one end, far away from the convex ring (5), of the blocking block (9) is provided with an accommodating frame (15), an accommodating cavity (16) is formed in the accommodating frame (15), the opening of the accommodating cavity (16) is far away from the blocking block (9) and is provided with nylon cloth in the accommodating cavity (16).

6. The anti-suck-back circulating water type multipurpose vacuum pump as claimed in claim 5, wherein: the accommodating cavity (16) is arranged in a spherical crown shape, and the nylon cloth is tightly attached to the accommodating frame (15).

7. The anti-suck-back circulating water type multipurpose vacuum pump as claimed in claim 1, wherein: the shrink piece includes spring (17), spring (17) are fixed to be set up on the inside wall of exhaust tube (4), spring (17) are located movable ring (6) and keep away from one side of bulge loop (5), spring (17) and movable ring (6) fixed connection, spring (17) are in tensile state.

8. The anti-suck-back circulating water type multipurpose vacuum pump as claimed in claim 1, wherein: one side of the plugging block (9) close to the movable ring (6) is provided with a groove (14), the cross-sectional area of the groove (14) is smaller than that of the air inlet channel (19), and nylon cloth is arranged in the groove (14).