Dry type screw vacuum pump convenient to clean

Abstract

The utility model relates to the technical field of dry-type screw vacuum pumps, in particular to a dry-type screw vacuum pump convenient to clean, which comprises a base, a dry-type screw vacuum pump body is fixedly connected to the top of the base, a variable frequency controller body is fixedly connected to one side of the top of the base, and a threaded rod is fixedly connected to the inside of a second gear. A baffle is arranged in the conveying cavity, a telescopic pipe is rotationally connected to the surface of the first threaded sleeve, scraping plates are connected to the two sides of the cross rod, and two spiral conveying blades are arranged in the conveying cavity; according to the dry-type screw vacuum pump, residual particles on the inner side wall of the dry-type screw vacuum pump body can be scraped and cleaned through matched use of the servo motor, the telescopic pipe, the scraping plate, the push rod and the abutting groove, meanwhile, the interior of the dry-type screw vacuum pump body is cleaned in cooperation with cleaning liquid, the situation that the spiral conveying blade is blocked during rotation is avoided, and the service life of the spiral conveying blade is prolonged. Stable operation of the dry screw vacuum pump body can be ensured to a certain extent, and meanwhile, the scraping plate is convenient to replace after being worn after being used for a certain time.

Description

TECHNICAL FIELD

[0001] The utility model belongs to dry screw vacuum pump technical field, concretely relates to a dry screw vacuum pump convenient to clean. BACKGROUND

[0002] Dry screw vacuum pump is a very high technology content scientific and technological product, mainly applied to high purity vacuum process, vacuum degree is extremely high, can adapt to severe working conditions, has the ability of extracting condensability, particle-containing gas, is especially suitable for clean environment, and easy to do anticorrosion treatment, especially suitable for electronics, chemical industry, biological medicine, metal processing, food processing and other fields, generally dry screw vacuum pump when conveying particle-containing gas, after long time use, the inner wall will adhere to a certain amount of particles, if not cleaned in time, the particles will accumulate inside, long time placement will also cause the particles to harden on the inner wall, even cause the rotor to jam during rotation, resulting in dry screw vacuum pump operation termination, has certain limitation in use, therefore, it is necessary to have a dry screw vacuum pump with cleaning function.

[0003] In the Chinese patent with publication number CN210218107U, a dry screw vacuum pump online cleaning device is mentioned, which comprises a dry screw vacuum pump, the suction inlet of the dry screw vacuum pump is connected with a material gas pipeline, a suction control valve is arranged on the material gas pipeline, the suction inlet of the dry screw vacuum pump is also connected with a cleaning liquid pipeline, a cleaning control valve is arranged on the cleaning liquid pipeline, and the dry screw vacuum pump is connected with a frequency converter controller. The dry screw vacuum pump online cleaning device in the utility model does not change the original mechanical equipment structure, installation position and process pipeline configuration, but only adds a frequency converter controller on the electrical main circuit, when the pump cavity needs to be cleaned during operation, only the electrical control switch needs to be switched, the frequency converter is switched to low frequency, the cleaning control valve is opened under low speed, the cleaning liquid is sucked into the pump cavity by the negative pressure of the pump, and the screw and the cylinder wall are cleaned under low speed, so that the cleaning efficiency is greatly improved.

[0004] However, the above technical scheme can achieve the purpose of cleaning the inside of the dry screw vacuum pump, but the hard alloy layer arranged on the spiral blade has a certain gap between each other, the spiral conveying blade cannot be attached to the inner side wall of the conveying cavity, otherwise the hard alloy layer will scratch the inner side wall of the conveying cavity, causing wear and reducing the service life. Therefore, the hard alloy layer has a certain distance from the internal conveying cavity, and the hard alloy layer can only scrape off the hardened particles that contact the hard alloy layer accumulated on the inner side wall of the conveying cavity, which will cause the residual hardened particles on the inner side wall of the conveying cavity to be difficult to be scraped off, thereby resulting in insufficient cleaning effect and certain limitation in use. UTILITY MODEL CONTENT

[0005] The utility model discloses a dry screw vacuum pump convenient to clean to solve the problem of above -mentioned background art.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A dry screw vacuum pump convenient to clean, including: base, the top of base is fixedly connected with dry screw vacuum pump body, one side of base top is fixedly connected with frequency conversion controller body, the back of dry screw vacuum pump body is fixedly connected with adjusting chamber, the back of adjusting chamber is fixedly connected with servo motor, the output of servo motor is fixedly connected with first gear, the surface of first gear is engaged with second gear, the inside of second gear is fixedly connected with threaded rod, the inside of dry screw vacuum pump body is fixedly connected with conveying chamber, the top of conveying chamber is equipped with gap slot, the inside of conveying chamber is provided with baffle, and the surface of baffle is penetrated in the inside of gap slot, the surface of threaded rod is screwed and is penetrated with first threaded sleeve, the surface of first threaded sleeve is rotatably connected with telescopic pipe, the bottom of telescopic pipe is connected with cross rod, the both sides of cross rod are connected with scraping plate, the inside of conveying chamber is provided with two spiral conveying vanes.

[0008] Preferably, one side of the top of the dry screw vacuum pump body is provided with a baffle, four fastening bolts are threadedly connected in the inside of the baffle, a horizontal groove is formed in the inside of the cross rod, and a bidirectional screw rod is rotatably arranged in the inside of the horizontal groove.

[0009] Preferably, a knob ring is fixedly connected to the middle of the surface of the bidirectional screw rod, and two second threaded sleeves are threadedly penetrated on the surface of the bidirectional screw rod.

[0010] Preferably, a push rod is fixedly connected to the surface of the second threaded sleeve, a resisting groove is formed in the inside of the scraping plate, and one end of the push rod is penetrated into the inside of the resisting groove.

[0011] Preferably, an air inlet pipeline is fixedly connected to one side of the top of the dry screw vacuum pump body, a first control valve is arranged on the surface of the air inlet pipeline, a cleaning liquid pipeline is fixedly connected to the surface of the air inlet pipeline, a second control valve is arranged on the surface of the cleaning liquid pipeline, an exhaust pipeline is fixedly connected in the inside of the dry screw vacuum pump body, a third control valve is arranged on the surface of the exhaust pipeline, a movable groove is formed in one side of the top of the dry screw vacuum pump body, a control panel is fixedly connected to one side of the surface of the dry screw vacuum pump body, and the control panel is electrically connected with the servo motor, the dry screw vacuum pump body and the frequency conversion controller body respectively.

[0012] Compared with the prior art, the utility model has the advantages of

[0013] (1) the residual particle of dry screw vacuum pump body inside wall can be scraped and cleaned, ensure its internal cleanliness, avoid particle long time accumulation hard, cause subsequent spiral conveying blade in rotation cause jam, further cause dry screw vacuum pump body work interruption situation, can ensure the stability of dry screw vacuum pump body when working to some extent, the whole device does not need to clean its inside with other structures, relatively simple and convenient.

[0014] (2) the scraper plate can be timely dismantled and replaced after a period of use, ensuring the cleaning of residual particles on the inner wall of the conveying cavity, and the scraper plate is also relatively convenient to replace, facilitating the operation of the workers. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the perspective view of the utility model;

[0016] Figure 2 is the perspective view of the movable groove of the utility model;

[0017] Figure 3 is the sectional view of the spiral conveying blade of the utility model;

[0018] Figure 4 is the perspective view of the scraper plate of the utility model;

[0019] Figure 5 is the sectional view of the conveying cavity of the utility model;

[0020] Figure 6 is the sectional view of the bidirectional screw rod of the utility model;

[0021] In the drawing: 1, base; 2, dry screw vacuum pump body; 3, frequency converter controller body; 4, adjusting cavity; 5, servo motor; 6, first gear; 7, second gear; 8, threaded rod; 9, conveying cavity; 10, notch groove; 11, first threaded sleeve; 12, telescopic pipe; 13, cross bar; 14, scraper plate; 15, spiral conveying blade; 16, blocking plate; 17, baffle; 18, transverse groove; 19, bidirectional screw rod; 20, push ring; 21, second threaded sleeve; 22, push rod; 23, abutting groove; 24, air inlet pipeline; 25, cleaning liquid pipeline; 26, exhaust pipeline; 27, movable groove. DETAILED DESCRIPTION

[0022] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0023] Embodiment one:

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a kind of dry screw vacuum pump convenient to clean, including base 1, the top of base 1 is fixedly connected with dry screw vacuum pump body 2, one side of the top of base 1 is fixedly connected with frequency conversion controller body 3, the back of dry screw vacuum pump body 2 is fixedly connected with adjusting cavity 4, the back of adjusting cavity 4 is fixedly connected with servo motor 5, the output of servo motor 5 is fixedly connected with first gear 6, the surface of first gear 6 is engaged with second gear 7, the inside of second gear 7 is fixedly connected with threaded rod 8, the inside of dry screw vacuum pump body 2 is fixedly connected with conveying cavity 9, the top of conveying cavity 9 is provided with gap slot 10, the inside of conveying cavity 9 is provided with baffle 17, and the surface of baffle 17 is penetrated in the inside of gap slot 10, the surface of threaded rod 8 is screwed and penetrated with first threaded sleeve 11, the surface of first threaded sleeve 11 is rotatably connected with telescopic pipe 12, the bottom end of telescopic pipe 12 is connected with cross bar 13, the two sides of cross bar 13 are all connected with scraping plate 14, and the inside of conveying cavity 9 is provided with two spiral conveying vanes 15. By the setting of frequency conversion controller body 3, the rotation speed of the motor of dry screw vacuum pump body 2 can be controlled, by the setting of adjusting cavity 4, servo motor 5 can be installed and fixed, by the setting of servo motor 5, it provides certain driving force for the rotation of first gear 6, by the setting of first gear 6 and second gear 7, threaded rod 8 can be rotated, it should be noted that one end of threaded rod 8 is rotatably arranged in the inside of adjusting cavity 4, and second gear 7 is fixedly connected to the surface of threaded rod 8, by the setting of gap slot 10, it is convenient for subsequent staff to put hands into the inside of conveying cavity 9, by the setting of baffle 17, gap slot 10 can be blocked, by the setting of telescopic pipe 12, cross bar 13 can be kept fixed, it should be noted that the bottom end of the surface of telescopic pipe 12 is screw-connected in the inside of above cross bar 13, the number of cross bar 13 is two, and the internal structures are same, by the setting of scraping plate 14, residual hardened particles on the inner side wall of conveying cavity 9 can be scraped, by the setting of spiral conveying vane 15, granular objects can be conveyed, after scraping plate 14 and cross bar 13 are connected, they become a whole, it is convenient to scrape the inner side wall of conveying cavity 9, the internal structure of cross bar 13 and scraping plate 14 are plastic material, and the manufacturing cost is lower.

[0025] Example two:

[0026] Please refer to Figure 1 , Figure 4 and Figure 6 As shown, the top of dry screw vacuum pump body 2 is provided with blocking plate 16, the inside of blocking plate 16 is screw-connected with four fastening bolts, the inside of cross bar 13 is provided with horizontal groove 18, and bidirectional screw rod 19 is rotatably arranged in the inside of horizontal groove 18.

[0027] The middle of the surface of the bidirectional screw rod 19 is fixedly connected with a dial ring 20, and the surface of the bidirectional screw rod 19 is threaded through two second threaded sleeves 21. The second threaded sleeves 21 are threaded through the surface of the bidirectional screw rod 19 by the arrangement of the bidirectional screw rod 19, and the bidirectional screw rod 19 is rotated by the arrangement of the dial ring 20.

[0028] The surface of the second threaded sleeve 21 is fixedly connected with a push rod 22, the inside of the scraping plate 14 is provided with an abutting groove 23, and one end of the push rod 22 penetrates the inside of the abutting groove 23. The push rod 22 is inserted into the inside of the abutting groove 23 by the arrangement of the push rod 22 and the abutting groove 23, so that the cross rod 13 and the scraping plate 14 are connected together, the scraping plate 14 is placed on the inner side wall of the conveying cavity 9, and the subsequent scraping work is facilitated.

[0029] The top of the dry screw vacuum pump body 2 is fixedly connected with an air inlet pipeline 24 on one side, the surface of the air inlet pipeline 24 is provided with a first control valve, the surface of the air inlet pipeline 24 is fixedly connected with a cleaning liquid pipeline 25, the surface of the cleaning liquid pipeline 25 is provided with a second control valve, the inside of the dry screw vacuum pump body 2 is fixedly connected with an exhaust pipeline 26, the surface of the exhaust pipeline 26 is provided with a third control valve, the top of the dry screw vacuum pump body 2 is provided with a movable groove 27 on one side, one side of the surface of the dry screw vacuum pump body 2 is fixedly connected with a control panel, and the control panel is electrically connected with the servo motor 5, the dry screw vacuum pump body 2 and the frequency converter body 3 respectively. The material to be conveyed can enter the inside of the dry screw vacuum pump body 2 by the arrangement of the air inlet pipeline 24, the cleaning liquid can enter the inside of the dry screw vacuum pump body 2 by the arrangement of the cleaning liquid pipeline 25, the extracted material can be conveyed to the corresponding position by the arrangement of the exhaust pipeline 26, and the worker can open the baffle 17 in the conveying cavity 9 by the arrangement of the movable groove 27.

[0030] The utility model discloses a working principle: the staff precontrol servo motor 5 work, and the output of servo motor 5 drives first gear wheel 6 rotation, and first gear wheel 6 rotation makes it drive second gear wheel 7 rotation, thereby make threaded rod 8 rotate, and then threaded rod 8 rotation drive first threaded sleeve 11 move forward, thereby make first threaded sleeve 11 drive telescopic pipe 12 and cross bar 13 move forward, make the residual granular material of the inside wall of conveying cavity 9 be scraped, and at the same time, the staff control dry screw vacuum pump body 2 and the equipment of supply cleaning fluid work, and close first control valve simultaneously, and frequency conversion controller body 3 open, make it reduce the rotation speed of dry screw vacuum pump body 2 drive end, and the granular material of cleaning fluid through cleaning fluid pipeline 25 enters the inside of dry screw vacuum pump body 2, make it be scraped and be transported, and spiral conveying blade 15 drive cleaning fluid roll, make the inside wall of conveying cavity 9 be cleaned, and the matter of cleaning finally passes exhaust pipeline 26 and exports, and scrape plate 14 uses certain time abrasion, and at this time, the staff will four fastening bolts in the inside of blocking plate 16 unscrew, and then the staff will open the baffle 17 in conveying cavity 9 through movable slot 27, and the staff control dry screw vacuum pump body 2 work, make it drive scrape plate 14 move to with servo motor 5 opposite one end, and then the staff rotates telescopic pipe 12, make the bottom of telescopic pipe 12 from the inside of cross bar 13 unscrew, then rotate the ring 20, make bidirectional screw rod 19 rotate, then make two second threaded sleeves 21 move to the direction of each other, thereby make the push rod 22 on the surface of second threaded sleeve 21 move to the position of each other, thereby make the one end of push rod 22 from the inside of the abutment groove 23, then the staff can disassemble scrape plate 14, then can select to replace it according to the abrasion of cross bar 13 again.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A dry screw vacuum pump which is easy to clean, characterized in that, Include: Base (1), the top of the base (1) is fixedly connected with dry screw vacuum pump body (2), one side of the top of the base (1) is fixedly connected with frequency conversion controller body (3), the back of the dry screw vacuum pump body (2) is fixedly connected with adjusting cavity (4), the back of the adjusting cavity (4) is fixedly connected with servo motor (5), the output end of the servo motor (5) is fixedly connected with first gear (6), the surface of the first gear (6) is engaged with second gear (7), the inside of the second gear (7) is fixedly connected with threaded rod (8), the inside of the dry screw vacuum pump body (2) is fixedly connected with conveying cavity (9), the top of the conveying cavity (9) is provided with notch groove (10), the inside of the conveying cavity (9) is provided with baffle (17), and the surface of the baffle (17) penetrates the inside of the notch groove (10), the surface of the threaded rod (8) is screwed through first threaded sleeve (11), the surface of the first threaded sleeve (11) is rotatably connected with telescopic tube (12), the bottom end of the telescopic tube (12) is connected with cross bar (13), the two sides of the cross bar (13) are connected with scraping plate (14), the inside of the conveying cavity (9) is provided with two spiral conveying blades (15).

2. A dry screw vacuum pump according to claim 1, characterized in that: One side of the top of the dry screw vacuum pump body (2) is provided with blocking plate (16), the inside of the blocking plate (16) is screwedly connected with four fastening bolts, the inside of the cross bar (13) is provided with horizontal groove (18), the inside of the horizontal groove (18) is rotatably provided with bidirectional screw rod (19).

3. A dry screw vacuum pump according to claim 2, characterized in that: The middle of the surface of the bidirectional screw rod (19) is fixedly connected with knob (20), the surface of the bidirectional screw rod (19) is screwed through two second threaded sleeves (21).

4. A dry screw vacuum pump according to claim 3, characterized in that: The surface of the second threaded sleeve (21) is fixedly connected with push rod (22), the inside of the scraping plate (14) is provided with abutting groove (23), and one end of the push rod (22) penetrates the inside of the abutting groove (23).

5. A dry screw vacuum pump according to claim 1, characterized in that: One side of the top of the dry screw vacuum pump body (2) is fixedly connected with air inlet pipeline (24), the surface of the air inlet pipeline (24) is provided with first control valve, the surface of the air inlet pipeline (24) is fixedly connected with cleaning liquid pipeline (25), the surface of the cleaning liquid pipeline (25) is provided with second control valve, the inside of the dry screw vacuum pump body (2) is fixedly connected with air outlet pipeline (26), the surface of the air outlet pipeline (26) is provided with third control valve, one side of the top of the dry screw vacuum pump body (2) is provided with movable groove (27), one side of the surface of the dry screw vacuum pump body (2) is fixedly connected with control panel, and the control panel is electrically connected with servo motor (5), dry screw vacuum pump body (2) and frequency conversion controller body (3) respectively.

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