CN218740956U

CN218740956U - Air inlet filtering device of screw vacuum pump

Info

Publication number: CN218740956U
Application number: CN202223343838.XU
Authority: CN
Inventors: 丁彭飞; 王贤; 安海军; 陈磊
Original assignee: Changyi Tianyu Pharmaceutical Co ltd
Current assignee: Changyi Tianyu Pharmaceutical Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-03-28
Anticipated expiration: 2032-12-13

Abstract

The utility model relates to a screw vacuum pump technical field specifically is a screw vacuum pump filter equipment that admits air, including the screw vacuum pump, install first flange on the intake pipe of screw vacuum pump, the top of first flange is connected with the rose box through the screw, be connected with the sealed pad between first flange and the rose box, the rose box passes through air duct and intake pipe intercommunication, the inside fixedly connected with filter screen of air duct, the inside top of rose box is provided with the spout, the inside rotation of spout is connected with two-way lead screw, the inside slip of the helicla flute of two-way lead screw is provided with the slider, the outside slip cover of two-way lead screw is equipped with the sliding sleeve, the sliding sleeve is connected with the slider rotation, sliding sleeve and spout sliding fit, the bottom fixed connection scraper blade of sliding sleeve; it is convenient for clear up the impurity on the filter screen, avoids impurity to pile up on the filter screen and causes the filter screen jam, guarantees the gas permeability of filter screen, guarantees the effect and the efficiency of evacuation, has improved the practicality of its use.

Description

Air inlet filtering device of screw vacuum pump

Technical Field

The utility model relates to a screw vacuum pump technical field specifically is a screw vacuum pump filter equipment that admits air.

Background

The screw vacuum pump utilizes the rotatory process of inhaling the exhaust that produces in the pump case of screw rod to take out the inside gas of container, some container inside that need evacuation can contain impurity such as dust, at the in-process that utilizes screw vacuum pump evacuation, impurity such as dust gets into screw vacuum pump's inside easily, impurity can accelerate the wearing and tearing to screw vacuum pump's axle head and helical tooth, accelerate screw vacuum pump's damage, shorten screw vacuum pump's life-span, consequently, can install the filter equipment that admits air in screw vacuum pump's intake pipe.

Through the retrieval, chinese patent is CN 201821922640.8's utility model patent discloses a screw vacuum pump filter equipment that admits air, including installing the filter housing on screw vacuum pump, be equipped with the air vent with screw vacuum pump intercommunication in the filter housing, it is when using, filters impurity through the hemisphere filter screen, when the impurity that needs evacuation container inside is more, more impurity adsorbs on the hemisphere filter screen, the same jam that causes the hemisphere filter screen, influences the efficiency of evacuation, reduces the practicality of its use.

Disclosure of Invention

Not enough to prior art, the utility model provides a screw vacuum pump filter equipment that admits air to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a screw vacuum pump filter equipment that admits air, including the screw vacuum pump, install first flange in the intake pipe of screw vacuum pump, there is the rose box on the top of first flange through screwed connection, be connected with sealed the pad between first flange and the rose box, the rose box passes through air duct and intake pipe intercommunication, the inside fixedly connected with filter screen of air duct, the inside top of rose box is provided with the spout, the inside rotation of spout is connected with two-way lead screw, the inside slip of the helicla flute of two-way lead screw is provided with the slider, the outside slip cap of two-way lead screw is equipped with the sliding sleeve, the sliding sleeve rotates with the slider to be connected, sliding sleeve and spout sliding fit, the bottom fixed connection scraper blade of sliding sleeve, the inside wall contact of scraper blade lateral wall and rose box, the bottom fixed connection brush of scraper blade, there is the top contact of filter screen the bottom of brush, the side of rose box is provided with the mounting groove, install the protection network that is used for protecting the mounting groove through the screw on the rose box, the inside fixedly connected with motor of mounting groove, the output fixedly connected with transmission shaft of motor, transmission shaft and rose box sealed rotation, the side fixed connection of two-way lead screw.

In order to collect impurity for convenient, the bottom left side and the bottom right side of rose box all communicate there is the connecting box, and the inside left side and the inside right side of rose box all seal up the slip and are provided with sealed piece, and sealed piece has to be connected with a plurality of telescopic links and a plurality of compression spring between the rose box, and the width of sealed piece is greater than the width of connecting box.

In order to collect impurities conveniently, the bottom end of the connecting box is fixedly connected with a first connecting pipe, and a collecting box is installed at the bottom end of the first connecting pipe in a sealing mode.

In order to facilitate impurities to slide to the inside of the collecting box from the material guide hopper, the material guide hopper is fixedly connected to the bottom side of the inside of the connecting box.

In order to facilitate the sliding of the sealing block, two ends of the scraper are fixedly connected with ejector blocks.

In order to be connected with a pipeline on a container needing vacuumizing conveniently, the top end of the filter box is connected with a second connecting pipe, and the top end of the second connecting pipe is fixedly connected with a second flange.

Compared with the prior art, the utility model provides a screw vacuum pump filter equipment that admits air possesses following beneficial effect:

this screw vacuum pump filter equipment that admits air, the in-process of carrying out the evacuation to the container, drive transmission shaft and two-way lead screw through the motor and rotate, slider carries out reciprocating motion along the axial of two-way lead screw when two-way lead screw rotates, and the slider drives sliding sleeve, scraper blade and brush and removes, clears up the impurity on the filter screen through the brush, avoids impurity to pile up on the filter screen and causes the filter screen to block up, guarantees the gas permeability of filter screen, guarantees the effect and the efficiency of evacuation, has improved the practicality of its use.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

FIG. 2 is a schematic side view of the connection of the collecting box, the first connecting tube and the connecting box of the present invention;

FIG. 3 is a schematic view of a portion of the enlarged structure of FIG. 1;

fig. 4 is a schematic diagram of a partial enlarged structure at B in fig. 1 according to the present invention.

The symbols in the drawings illustrate that:

1. a screw vacuum pump; 2. an air inlet pipe; 3. a first flange; 4. a filter box; 5. a gasket; 6. a filter screen; 7. a bidirectional screw; 8. a slider; 9. a sliding sleeve; 10. a squeegee; 11. a brush; 12. a motor; 13. a drive shaft; 14. a connecting box; 15. a sealing block; 16. a telescopic rod; 17. a compression spring; 18. a first connecting pipe; 19. a collection box; 20. a material guide hopper; 21. a top block; 22. a second connecting pipe; 23. a second flange; 24. and (4) a protective net.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment is as follows:

referring to fig. 1-4, an air inlet filtering device for a screw vacuum pump comprises a screw vacuum pump 1, a first flange 3 is installed on an air inlet pipe 2 of the screw vacuum pump 1, the top end of the first flange 3 is connected with a filtering box 4 through a screw, the top end of the filtering box 4 is connected with a second connecting pipe 22, the top end of the second connecting pipe 22 is fixedly connected with a second flange 23, which is convenient for being connected with a pipeline on a container needing vacuum pumping, a sealing gasket 5 is connected between the first flange 3 and the filtering box 4, the sealing performance between the first flange 3 and the filtering box 4 is improved, the filtering box 4 is communicated with the air inlet pipe 2 through a vent groove, a filter screen 6 is fixedly connected inside the vent groove, air entering the screw vacuum pump 1 is filtered through the filter screen 6, the top end inside the filtering box 4 is provided with a sliding groove, the inside of the sliding groove is rotatably connected with a bidirectional screw 7, the inside of the spiral groove of the bidirectional screw 7 is slidably provided with a sliding block 8, the outside of the bidirectional screw 7 is slidably connected with a sliding sleeve 9, the sliding sleeve is rotatably connected with the sliding groove 9, the sliding fit with a scraper 10 fixedly connected with a scraper 10, the bottom end of the sliding groove is connected with a motor 12, the sliding groove of a brush for driving the filter box 4, the sliding groove 12, the brush is connected with a motor, the end of the sliding groove 12, the sliding groove is connected with the end of the filter box 4, when the bidirectional screw 7 rotates, the sliding block 8 reciprocates along the axial direction of the bidirectional screw 7, the sliding block 8 drives the sliding sleeve 9, the scraper 10 and the hairbrush 11 to move, impurities on the filter screen 6 are cleaned through the hairbrush 11, the impurities are prevented from being accumulated on the filter screen 6 to cause the filter screen 6 to be blocked, the air permeability of the filter screen 6 is ensured, the vacuumizing effect and efficiency are ensured, and the use practicability is improved.

It should be further noted that, the left side of the bottom end and the right side of the bottom end of the filter box 4 are both communicated with the connecting box 14, the first connecting pipe 18 fixedly connected to the bottom end of the connecting box 14, the collecting box 19 is installed at the bottom end of the first connecting pipe 18 in a sealed manner, impurities are collected through the collecting box 19, the guide hopper 20 is fixedly connected to the inside bottom side of the connecting box 14, the screw vacuum pump 1 can generate slight vibration in the working process, impurities inside the connecting box 14 can slide to the inside of the collecting box 19 from the guide hopper 20, the sealing blocks 15 are arranged on the left side and the right side of the inside of the filter box 4 in a sealed manner, the top blocks 21 are fixedly connected to the two ends of the scraper 10, the sealing blocks 15 are convenient to push and slide, the sealing blocks 15 are connected with a plurality of telescopic rods 16 and a plurality of compression springs 17 between the filter box 4, the width of the sealing blocks 15 is greater than that of the connecting box 14, the sealing blocks 15 are pushed to move by the compression springs 17, so that the sealing blocks 15 are moved to the upper side of the connecting box 14 to seal the connecting box 14, and the impurities falling to be prevented from being sucked to the filter screen 6.

When the device is used, firstly, the second flange 23 is connected with a pipeline on a container needing vacuumizing in a sealing mode, then the screw vacuum pump 1 is started, air in the container enters the inside of the screw vacuum pump 1 through the connecting pipe, the filter box 4 and the air inlet pipe 2, so that the inside of the container is vacuumized, air pumped out of the inside of the container is filtered through the filter screen 6, the motor 12 is started, the motor 12 drives the transmission shaft 13 and the bidirectional screw rod 7 to rotate, the sliding block 8 reciprocates along the axial direction of the bidirectional screw rod 7 when the bidirectional screw rod 7 rotates, the sliding block 8 drives the sliding sleeve 9, the scraper 10 and the hairbrush 11 to move, impurities on the filter screen 6 are cleaned through the hairbrush 11, the sealing block 15 is pushed to move through the jacking block 21 in the moving process of the scraper 10, the hairbrush 11 pushes the impurities cleaned from the filter screen 6 to the inside of the corresponding connecting box 14, when the scraper 10 moves towards the middle position of the filter box 4, the sealing block 15 is pushed to slide through the compression spring 17, the connecting block 15 is used for sealing the connecting box 14, and the impurities falling into the connecting box 14 fall through the first connecting pipe 18, and the collecting box 19 is used for collecting the impurities.

The motor is a known device which can be directly purchased in the market, is only used here, and is not improved in structure and function, so that detailed description is omitted, the motor is provided with a control switch matched with the motor, and the installation position of the control switch is selected according to actual use requirements.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a screw vacuum pump filter equipment that admits air, includes screw vacuum pump (1), its characterized in that: the air inlet pipe (2) of the screw vacuum pump (1) is provided with a first flange (3), the top end of the first flange (3) is connected with a filter box (4) through a screw, a sealing gasket (5) is connected between the first flange (3) and the filter box (4), the filter box (4) is communicated with the air inlet pipe (2) through an air groove, the inside of the air groove is fixedly connected with a filter screen (6), the inside top end of the filter box (4) is provided with a sliding groove, the inside of the sliding groove is rotatably connected with a bidirectional lead screw (7), the inside of a spiral groove of the bidirectional lead screw (7) is slidably provided with a sliding block (8), the outside of the bidirectional lead screw (7) is slidably sleeved with a sliding sleeve (9), the sliding sleeve (9) is rotatably connected with the sliding block (8), the sliding sleeve (9) is slidably matched with the sliding groove, the bottom end of the sliding sleeve (9) is fixedly connected with a scraper blade (10), the outer side wall of the scraper blade (10) is in contact with the inner side wall of the filter box (4), the bottom end of the scraper blade (10) is fixedly connected with a hairbrush (11), the bottom of the hairbrush (11) is provided with the top end of the filter screen (6) in contact, the mounting groove is provided with a mounting groove, the side end of a mounting groove (12) for fixedly connected with a motor (12) for fixedly mounting groove (24) for fixedly mounting a protective screen (12) for fixedly mounting a motor for fixedly mounting a protective screen (12) of a protective shaft for fixedly mounting groove for fixing a protective shaft (12) on the mounting groove for fixing a motor for mounting of the mounting groove (12) on the side end of the mounting groove, the transmission shaft (13) is connected with the filter box (4) in a sealing and rotating way, and the side end of the transmission shaft (13) is fixedly connected with the side end of the bidirectional screw rod (7).

2. The intake air filtering device of the screw vacuum pump as claimed in claim 1, wherein: the bottom left side and the bottom right side of rose box (4) all communicate with connecting box (14), and the inside left side and the inside right side of rose box (4) are all sealed to slide and are provided with sealed piece (15), and sealed piece (15) have to be connected with a plurality of telescopic links (16) and a plurality of compression spring (17) between rose box (4), and the width of sealed piece (15) is greater than the width of connecting box (14).

3. The intake air filtering device of the screw vacuum pump as claimed in claim 2, wherein: the bottom end of the connecting box (14) is fixedly connected with a first connecting pipe (18), and the bottom end of the first connecting pipe (18) is hermetically provided with a collecting box (19).

4. The intake air filtering device of the screw vacuum pump as claimed in claim 3, wherein: a material guide hopper (20) is fixedly connected to the bottom side inside the connecting box (14).

5. The intake air filtering device of the screw vacuum pump as claimed in claim 4, wherein: both ends of the scraper (10) are fixedly connected with ejector blocks (21).

6. The intake air filtering device of the screw vacuum pump as claimed in claim 5, wherein: the top end of the filter box (4) is connected with a second connecting pipe (22), and the top end of the second connecting pipe (22) is fixedly connected with a second flange (23).