Dry type oil-free screw air compressor

Abstract

The utility model belongs to the technical field of air compressors, and particularly relates to a dry-type oil-free screw air compressor which comprises a dry-type oil-free screw air compressor body, filter screens are symmetrically and fixedly installed on the two sides of the dry-type oil-free screw air compressor body, fixing shells are symmetrically and fixedly installed on the two sides of the dry-type oil-free screw air compressor body, and the filter screens are connected with the fixing shells. The two fixing shells are located on one sides of the two filter screens correspondingly, first power cavities are formed in the fixing shells, gears are movably installed in the two first power cavities correspondingly, and one ends of the gears penetrate through the first power cavities, extend to the outside and are fixedly provided with a plurality of scraping plates; the driving assembly is located in the dry type oil-free screw air compressor body and used for driving the two gears to slide and rotate. When the whole device is used, moisture can be absorbed, the moisture is prevented from influencing use of internal components of the dry-type oil-free screw air compressor body, and meanwhile large-particle impurities and insect bodies on the surface of the filter screen can be scraped off.

Description

Technical Field

[0001] The utility model belongs to the technical field of air compressors, and in particular relates to a dry oil-free screw air compressor. Background Art

[0002] The dry oil-free screw air compressor is a special air compressor that does not use any lubricating oil during the compression process.

[0003] For example, the Chinese patent with publication number CN219366317U discloses an oil-free dry screw air compressor, which relates to the technical field of air compressors. The present application comprises a box body, wherein a cavity is constructed in the box body, and an opening is constructed at one end, wherein the opening is connected to the cavity, wherein a first door panel is hingedly connected to the box body on one side of the opening, wherein a second door panel is hingedly connected to the box body on the other side of the opening, wherein a control panel is installed on the surface of the second door panel, wherein an air compressor body is fixed to the bottom of the cavity of the box body, wherein a second air supply pipe is fixed to the output end of the air compressor body, and a filtering mechanism is arranged on one side of the air compressor body. The present application, by starting the vacuum pump, sucks air into the filter box, and then filters impurities in the air through a plurality of filter screens, thereby ensuring the cleanliness of the air, reducing the impurities in the air from entering the air compressor body, increasing the service life of the air compressor body, and improving the quality of air compression.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when used, such as: insects may attach to the filter net when the above device is used, and personnel need to clean the filter net frequently, which wastes time. At the same time, when the above device is used in a humid environment, the electronic components in the device may be damaged by moisture erosion, resulting in the need for maintenance of the entire device. In view of this, we propose a dry oil-free screw air compressor. Utility Model Content

[0006] The utility model aims to provide a dry oil-free screw air compressor to solve the problems raised in the above background technology.

[0007] In view of this, the utility model provides a dry oil-free screw air compressor, comprising:

[0008] A dry oil-free screw air compressor body, wherein filters are symmetrically fixedly installed on both sides of the dry oil-free screw air compressor body, and fixed shells are symmetrically fixedly installed on both sides of the dry oil-free screw air compressor body, and the two fixed shells are respectively located on one side of the two filters, and a power chamber 1 is opened in the fixed shell, and gears are movably installed in the two power chambers 1, and one end of the gear passes through the power chamber 1 and extends to the outside and is fixedly installed with a plurality of scrapers;

[0009] A drive assembly, which is located in the body of the dry oil-free screw air compressor and is used to drive the two gears to slide and rotate;

[0010] Two sliding grooves, both of which are provided at the top of the dry oil-free screw air compressor body, a drying box is inserted and installed in the sliding groove, the lower end of the drying box passes through the corresponding sliding groove and extends into the dry oil-free screw air compressor body, and a plurality of through holes are provided at the lower end of the drying box;

[0011] Two fixing components are both located in the body of the dry oil-free screw air compressor and are used to fix the positions of the two drying boxes respectively.

[0012] In the technical solution, a desiccant is arranged in the drying box, and the air in the dry oil-free screw air compressor body enters the drying box through a plurality of through holes. The desiccant in the drying box can absorb the moisture in the air. As the hot air rises, the desiccant can better contact with the rising humid air, thereby improving the moisture absorption efficiency and preventing moisture from affecting the use of the internal components of the dry oil-free screw air compressor body. When one of the drying boxes needs to be replaced, one of the drying boxes can be pulled out of the corresponding sliding groove through the provided fixing assembly, and the drying box can be replaced, and then the new drying box can be reinserted into the sliding groove. The position of the drying box can be fixed through the provided fixing assembly, so as to facilitate the replacement of the drying box.

[0013] Through the set driving assembly, the two gears can be driven to move upward and rotate simultaneously, and the two gears respectively drive a number of scrapers to move upward and rotate, and the number of scrapers can scrape off the large particles of impurities and insect corpses on the surface of the filter, so that there will be no large particles of impurities and insect corpses on the surface of the filter. At the same time, the large particles of impurities and insect corpses will fall to the bottom of the fixed shell under the action of gravity and be collected, without polluting the environment.

[0014] In the above technical solution, further, the driving component includes:

[0015] Power chamber 2, the power chamber 2 is opened in the body of the dry oil-free screw air compressor and is located between two fixed shells, a connecting rod is slidably installed in the power chamber 2, two ends of the connecting rod respectively penetrate the two sides of the power chamber 2 and extend into the two power chambers 1 respectively, the two ends of the connecting rod are respectively rotatably connected with two gears, a rack is provided in the power chamber 1 and on one side of the gear, the rack is meshed with the gear, and the two racks are fixedly connected to the body of the dry oil-free screw air compressor;

[0016] The motor is fixedly mounted on the top of the dry oil-free screw air compressor body and is located above the power chamber 2. The output shaft of the motor passes through the dry oil-free screw air compressor body and extends into the power chamber 2 and is fixedly mounted with a threaded rod. The lower end of the threaded rod passes through the connecting rod, and the threaded rod is threadedly connected to the connecting rod.

[0017] In this technical solution, personnel start the motor, the motor is powered on and drives the threaded rod to rotate. Under the action of the thread, the connecting rod slides upward, and the connecting rod drives the two gears to move upward. Under the action of the two racks respectively meshing with the two gears, the two gears move upward and rotate at the same time. The two gears respectively drive a number of scrapers to move upward and rotate. The scrapers can scrape off large particles of impurities and insect corpses on the surface of the filter, so that there will be no large particles of impurities and insect corpses on the surface of the filter. At the same time, the large particles of impurities and insect corpses will fall to the bottom of the fixed shell under the action of gravity and be collected, without polluting the environment.

[0018] In the above technical solution, further, the fixing assembly includes:

[0019] Two sliding rods, both of which are slidably installed in the sliding groove, and the two sliding rods are respectively located on both sides of the drying box, the sides of the two sliding rods close to each other extend into the drying box, and the sides of the two sliding rods close to each other are plugged and matched with the drying box, and the sides of the two sliding rods away from each other are fixedly installed with a plurality of springs fixed to the inner wall of the sliding groove;

[0020] A turntable is rotatably installed in a sliding groove and is located between two sliding rods. Two arc grooves are provided on the turntable, and the arc grooves are connected to the sliding grooves. Movable columns are movably installed in the two arc grooves, and the two movable columns are respectively fixedly connected to the two sliding rods. The upper end of the turntable passes through the sliding groove and extends to the outside.

[0021] In the technical solution, a desiccant is arranged in the drying box, and the air in the dry oil-free screw air compressor body enters the drying box through a plurality of through holes. The desiccant in the drying box can absorb the moisture in the air. As the hot air rises, the desiccant can better contact with the rising humid air, thereby improving the moisture absorption efficiency and preventing moisture from affecting the use of the internal components of the dry oil-free screw air compressor body. When one of the drying boxes needs to be replaced, firstly rotate one of the turntables, and the turntable drives the two movable columns to rotate and slide in the arc groove respectively through the two arc grooves, and at the same time, the two movable columns move away from each other, and the two movable columns drive the two sliding rods to slide and move away from each other respectively, and at the same time, a plurality of springs are squeezed and contracted. When the two sliding rods are separated from the drying box, one of the handles can be pulled to drive one of the drying boxes to be taken out from the corresponding sliding groove, and the drying box can be replaced;

[0022] Then reinsert the new drying box into the sliding slot, and then release the turntable. Under the action of several spring rebound forces, the two sliding rods slide and approach each other. Then both sliding rods are inserted into the drying box to fix the position of the drying box, thereby facilitating the replacement of the drying box.

[0023] In the above technical solution, further, a handle is fixedly installed on the top of the drying box, and an operating disk is fixedly installed on the upper end of the turntable.

[0024] In the technical solution, a handle is provided to facilitate personnel to pull the drying box, and an operating disk is provided to facilitate personnel to rotate the turntable.

[0025] In the above technical solution, further, the plurality of scrapers are distributed in a ring shape with equal spacing.

[0026] In the technical solution, a plurality of scrapers are provided to ensure that the plurality of scrapers can scrape off large particles of impurities and dead insects on the surface of the filter screen.

[0027] In the above technical solution, further, the output shaft of the motor is rotationally connected to the dry oil-free screw air compressor body and the second power chamber.

[0028] In this technical solution, it is ensured that the output shaft of the motor rotates with the dry oil-free screw air compressor body and the power chamber.

[0029] In the above technical solution, further, the movable column and the corresponding sliding rod are an integrally formed structure.

[0030] In this technical solution, the stability of the movable column and the sliding rod during use is ensured.

[0031] The beneficial effects of the utility model are:

[0032] 1. The dry-type oil-free screw air compressor has a desiccant in the drying box. The air in the dry-type oil-free screw air compressor body enters the drying box through a number of through holes. The desiccant in the drying box can absorb moisture in the air. As the hot air rises, the desiccant can better contact with the rising humid air, thereby improving the moisture absorption efficiency and preventing moisture from affecting the use of components inside the dry-type oil-free screw air compressor body. When it is necessary to replace one of the drying boxes, one of the drying boxes can be pulled out of the corresponding sliding groove through the provided fixing assembly, and the drying box can be replaced. Then, the new drying box can be reinserted into the sliding groove. The position of the drying box can be fixed through the provided fixing assembly, so that the drying box can be easily replaced.

[0033] 2. The dry oil-free screw air compressor can drive two gears to move upward and rotate simultaneously through the set driving assembly. The two gears respectively drive a number of scrapers to move upward and rotate. The number of scrapers can scrape off large particles of impurities and insect corpses on the surface of the filter, so that there will be no large particles of impurities and insect corpses on the surface of the filter. At the same time, the large particles of impurities and insect corpses will fall to the bottom of the fixed shell under the action of gravity and be collected, without polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0035] Figure 2 This is one of the cross-sectional structural diagrams of the dry oil-free screw air compressor body of the utility model;

[0036] Figure 3 This is the second schematic diagram of the cross-sectional structure of the dry oil-free screw air compressor body of the utility model;

[0037] Figure 4 The utility model Figure 3 The enlarged structural diagram at A in the middle;

[0038] Figure 5 It is a schematic diagram of the cross-sectional structure of the fixed shell of the utility model;

[0039] Figure 6 It is a schematic diagram of the threaded rod area structure of the utility model;

[0040] Figure 7 It is a schematic diagram of the drying box area structure of the utility model;

[0041] Figure 8 It is a schematic diagram of the movable column area structure of the utility model.

[0042] The symbols in the figure are:

[0043] 1. Dry oil-free screw air compressor body; 2. Filter; 3. Fixed shell; 4. Power chamber 1; 5. Rack; 6. Gear; 7. Scraper; 8. Sliding groove; 9. Drying box; 10. Through hole; 11. Power chamber 2; 12. Connecting rod; 13. Motor; 14. Threaded rod; 15. Sliding rod; 16. Spring; 17. Turntable; 18. Arc groove; 19. Movable column; 20. Operating panel; 21. Handle. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0045] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0047] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0048] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0049] Embodiment 1:

[0050] See also Figure 1 - Figure 8 As shown, this embodiment provides a dry oil-free screw air compressor, comprising:

[0051] A dry oil-free screw air compressor body 1, a filter screen 2 is symmetrically fixedly installed on both sides of the dry oil-free screw air compressor body 1, a fixed shell 3 is symmetrically fixedly installed on both sides of the dry oil-free screw air compressor body 1, the two fixed shells 3 are respectively located on one side of the two filter screens 2, a power chamber 4 is opened in the fixed shell 3, and gears 6 are movably installed in the two power chambers 4, one end of the gear 6 penetrates the power chamber 4 and extends to the outside and is fixedly installed with a plurality of scrapers 7;

[0052] A drive assembly, which is located in the dry oil-free screw air compressor body 1 and is used to drive the two gears 6 to slide and rotate;

[0053] Two sliding grooves 8, both of which are provided at the top of the dry oil-free screw air compressor body 1, a drying box 9 is inserted and installed in the sliding grooves 8, the lower end of the drying box 9 passes through the corresponding sliding grooves 8 and extends into the dry oil-free screw air compressor body 1, and a plurality of through holes 10 are provided at the lower end of the drying box 9;

[0054] Two fixing components, both of which are located in the dry oil-free screw air compressor body 1 and are used to fix the positions of the two drying boxes 9 respectively.

[0055] Among them, a desiccant is arranged in the drying box 9, and the air in the dry oil-free screw air compressor body 1 enters the drying box 9 through a plurality of through holes 10. The desiccant in the drying box 9 can absorb the moisture in the air. As the hot air rises, the desiccant can better contact with the rising humid air, thereby improving the moisture absorption efficiency and preventing moisture from affecting the use of the internal components of the dry oil-free screw air compressor body 1. When it is necessary to replace one of the drying boxes 9, one of the drying boxes 9 can be pulled out of the corresponding sliding groove 8 through the provided fixing assembly, and the drying box 9 can be replaced, and then the new drying box 9 can be reinserted into the sliding groove 8. The position of the drying box 9 can be fixed through the provided fixing assembly, so as to achieve the effect of facilitating the replacement of the drying box 9;

[0056] Through the set driving assembly, the two gears 6 can be driven to move upward and rotate simultaneously. The two gears 6 can respectively drive a number of scrapers 7 to move upward and rotate. The number of scrapers 7 can scrape off the large particles of impurities and insect corpses on the surface of the filter screen 2, so that there will be no large particles of impurities and insect corpses on the surface of the filter screen 2. At the same time, the large particles of impurities and insect corpses will fall to the bottom of the fixed shell 3 under the action of gravity and be collected, without polluting the environment.

[0057] In this embodiment, the driving component includes:

[0058] The power chamber 2 11 is provided in the dry oil-free screw air compressor body 1 and is located between the two fixed shells 3. A connecting rod 12 is slidably installed in the power chamber 2 11. The two ends of the connecting rod 12 respectively penetrate the two sides of the power chamber 2 11 and extend into the two power chambers 1 4 respectively. The two ends of the connecting rod 12 are respectively rotatably connected with the two gears 6. A rack 5 is provided in the power chamber 1 4 and on one side of the gear 6. The rack 5 meshes with the gear 6. The two racks 5 are fixedly connected with the dry oil-free screw air compressor body 1.

[0059] The motor 13 is fixedly mounted on the top of the dry oil-free screw air compressor body 1 and is located above the power chamber 2 11. The output shaft of the motor 13 penetrates the dry oil-free screw air compressor body 1 and extends into the power chamber 2 11 and is fixedly mounted with a threaded rod 14. The lower end of the threaded rod 14 penetrates the connecting rod 12, and the threaded rod 14 is threadedly connected to the connecting rod 12.

[0060] Among them, personnel start the motor 13, the motor 13 is powered on and drives the threaded rod 14 to rotate. Under the action of the thread, the connecting rod 12 slides upward, and the connecting rod 12 drives the two gears 6 to move upward. Under the action of the two racks 5 respectively meshing with the two gears 6, the two gears 6 move upward and rotate at the same time, and the two gears 6 respectively drive a number of scrapers 7 to move upward and rotate. The scrapers 7 can scrape off the large particles of impurities and insect corpses on the surface of the filter screen 2, so that there will be no large particles of impurities and insect corpses on the surface of the filter screen 2. At the same time, the large particles of impurities and insect corpses will fall to the bottom of the fixed shell 3 under the action of gravity and be collected, and will not pollute the environment.

[0061] In this embodiment, the fixing component includes:

[0062] Two sliding rods 15, both sliding rods 15 are slidably installed in the sliding groove 8, and the two sliding rods 15 are respectively located on both sides of the drying box 9, the sides of the two sliding rods 15 close to each other extend into the drying box 9, and the sides of the two sliding rods 15 close to each other are plugged and matched with the drying box 9, and the sides of the two sliding rods 15 away from each other are fixedly installed with a plurality of springs 16 fixed to the inner wall of the sliding groove 8;

[0063] A turntable 17 is rotatably mounted in the sliding groove 8 and is located between the two sliding rods 15. Two arc grooves 18 are provided on the turntable 17. The arc grooves 18 are connected to the sliding groove 8. Movable columns 19 are movably mounted in the two arc grooves 18. The two movable columns 19 are respectively fixedly connected to the two sliding rods 15. The upper end of the turntable 17 passes through the sliding groove 8 and extends to the outside.

[0064] Among them, a desiccant is arranged in the drying box 9, and the air in the dry oil-free screw air compressor body 1 enters the drying box 9 through a plurality of through holes 10. The desiccant in the drying box 9 can absorb the moisture in the air. As the hot air rises, the desiccant can better contact with the rising humid air, thereby improving the moisture absorption efficiency and preventing moisture from affecting the use of the internal components of the dry oil-free screw air compressor body 1. When it is necessary to replace one of the drying boxes 9, firstly rotate one of the turntables 17, and the turntable 17 drives the two movable columns 19 to rotate and slide in the arc groove 18 through the two arc grooves 18, and at the same time, the two movable columns 19 move away from each other, and the two movable columns 19 respectively drive the two sliding rods 15 to slide and move away from each other, and at the same time, a plurality of springs 16 are squeezed and contracted. When the two sliding rods 15 are separated from the drying box 9, one of the handles 21 can be pulled to drive one of the drying boxes 9 to be taken out from the corresponding sliding groove 8, and the drying box 9 can be replaced;

[0065] Then, the new drying box 9 is reinserted into the sliding groove 8, and then the turntable 17 is released. Under the action of the rebound force of the springs 16, the two sliding rods 15 slide and approach each other, and then the two sliding rods 15 are inserted into the drying box 9, so that the position of the drying box 9 can be fixed, so as to facilitate the replacement of the drying box 9.

[0066] Embodiment 2:

[0067] This embodiment provides a dry oil-free screw air compressor, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0068] In this embodiment, a handle 21 is fixedly mounted on the top of the drying box 9 , and an operating panel 20 is fixedly mounted on the upper end of the rotating disk 17 .

[0069] The handle 21 is provided to facilitate personnel to pull the drying box 9 , and the operating disk 20 is provided to facilitate personnel to rotate the turntable 17 .

[0070] Embodiment 3:

[0071] This embodiment provides a dry oil-free screw air compressor, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0072] In this embodiment, a plurality of scrapers 7 are distributed in a ring shape with equal intervals.

[0073] Among them, by setting up a plurality of scrapers 7, it is ensured that the plurality of scrapers 7 can scrape off large particles of impurities and insect corpses on the surface of the filter screen 2.

[0074] Embodiment 4:

[0075] This embodiment provides a dry oil-free screw air compressor, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0076] In this embodiment, the output shaft of the motor 13 is rotatably connected to the dry oil-free screw air compressor body 1 and the second power chamber 11 .

[0077] The output shaft of the motor 13 is ensured to rotate with the dry oil-free screw air compressor body 1 and the power chamber 2 11 .

[0078] Embodiment 5:

[0079] This embodiment provides a dry oil-free screw air compressor, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0080] In this embodiment, the movable column 19 and the corresponding sliding rod 15 are an integrally formed structure.

[0081] The stability of the movable column 19 and the sliding rod 15 during use is ensured.

[0082] Working principle: a desiccant is arranged in the drying box 9. The air in the dry oil-free screw air compressor body 1 enters the drying box 9 through a plurality of through holes 10. The desiccant in the drying box 9 can absorb the moisture in the air. As the hot air rises, the desiccant can better contact with the rising humid air, thereby improving the moisture absorption efficiency and preventing moisture from affecting the use of the internal components of the dry oil-free screw air compressor body 1. When one of the drying boxes 9 needs to be replaced, firstly rotate one of the operating disks 20 and drive the turntable 17 to rotate. The turntable 17 drives the two movable columns 19 to rotate and slide in the arc groove 18 through the two arc grooves 18. At the same time, the two movable columns 19 move away from each other. The two movable columns 19 respectively drive the two sliding rods 15 to slide and move away from each other. At the same time, a plurality of springs 16 are squeezed and contracted. When the two sliding rods 15 are separated from the drying box 9, one of the handles 21 can be pulled to drive one of the drying boxes 9 to be taken out from the corresponding sliding groove 8, and the drying box 9 can be replaced.

[0083] Then, the new drying box 9 is reinserted into the sliding groove 8, and then the operating plate 20 is released. Under the action of the rebound force of the plurality of springs 16, the two sliding rods 15 slide and approach each other, and then both sliding rods 15 are inserted into the drying box 9, so that the position of the drying box 9 can be fixed, so as to facilitate the replacement of the drying box 9.

[0084] The personnel starts the motor 13, the motor 13 is powered on and drives the threaded rod 14 to rotate. Under the action of the thread, the connecting rod 12 slides upward, and the connecting rod 12 drives the two gears 6 to move upward. Under the action of the two racks 5 respectively meshing with the two gears 6, the two gears 6 move upward and rotate at the same time. The two gears 6 respectively drive a number of scrapers 7 to move upward and rotate. The scrapers 7 can scrape off the large particles of impurities and insect corpses on the surface of the filter screen 2, so that there will be no large particles of impurities and insect corpses on the surface of the filter screen 2. At the same time, the large particles of impurities and insect corpses will fall to the bottom of the fixed shell 3 under the action of gravity and be collected, and will not pollute the environment.

[0085] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A dry oil-free screw air compressor, characterized in that: include: A dry oil-free screw air compressor body (1), wherein filter screens (2) are symmetrically fixedly installed on both sides of the dry oil-free screw air compressor body (1), and fixed shells (3) are symmetrically fixedly installed on both sides of the dry oil-free screw air compressor body (1), and the two fixed shells (3) are respectively located on one side of the two filter screens (2), and a power chamber (4) is opened in the fixed shell (3), and gears (6) are movably installed in the two power chambers (4), and one end of the gear (6) passes through the power chamber (4) and extends to the outside and is fixedly installed with a plurality of scrapers (7); A drive assembly, the drive assembly is located in the dry oil-free screw air compressor body (1) and is used to drive the two gears (6) to slide and rotate; Two sliding grooves (8), both of which are provided at the top of the dry oil-free screw air compressor body (1), a drying box (9) is inserted and installed in the sliding grooves (8), the lower end of the drying box (9) passes through the corresponding sliding grooves (8) and extends into the dry oil-free screw air compressor body (1), and a plurality of through holes (10) are provided at the lower end of the drying box (9); Two fixing components, both of which are located in the dry oil-free screw air compressor body (1) and are used to fix the positions of the two drying boxes (9) respectively.

2. A dry oil-free screw air compressor according to claim 1, characterized in that: The drive assembly comprises: A power chamber 2 (11), the power chamber 2 (11) is provided in the dry oil-free screw air compressor body (1) and is located between the two fixed shells (3), a connecting rod (12) is slidably installed in the power chamber 2 (11), the two ends of the connecting rod (12) respectively penetrate the two sides of the power chamber 2 (11) and respectively extend into the two power chambers 1 (4), the two ends of the connecting rod (12) are respectively rotatably connected to two gears (6), a rack (5) is provided in the power chamber 1 (4) and located on one side of the gear (6), the rack (5) is meshed with the gear (6), and the two racks (5) are fixedly connected to the dry oil-free screw air compressor body (1); A motor (13) is fixedly mounted on the top of the dry oil-free screw air compressor body (1) and is located above the second power chamber (11). The output shaft of the motor (13) passes through the dry oil-free screw air compressor body (1) and extends into the second power chamber (11) and is fixedly mounted with a threaded rod (14). The lower end of the threaded rod (14) passes through the connecting rod (12), and the threaded rod (14) is threadedly connected to the connecting rod (12).

3. The dry type oil-free screw air compressor according to claim 1, characterized in that: The fixing assembly comprises: Two sliding rods (15), both of which are slidably mounted in the sliding groove (8), and the two sliding rods (15) are respectively located on both sides of the drying box (9), the sides of the two sliding rods (15) close to each other extend into the drying box (9), and the sides of the two sliding rods (15) close to each other are plugged and matched with the drying box (9), and the sides of the two sliding rods (15) away from each other are fixedly mounted with a plurality of springs (16) fixed to the inner wall of the sliding groove (8); A turntable (17) is rotatably mounted in the sliding groove (8) and is located between the two sliding rods (15). Two arc grooves (18) are provided on the turntable (17). The arc grooves (18) are connected to the sliding groove (8). Movable columns (19) are movably mounted in the two arc grooves (18). The two movable columns (19) are respectively fixedly connected to the two sliding rods (15). The upper end of the turntable (17) passes through the sliding groove (8) and extends to the outside.

4. The dry oil-free screw air compressor according to claim 3, characterized in that: A handle (21) is fixedly mounted on the top of the drying box (9), and an operating disk (20) is fixedly mounted on the upper end of the rotating disk (17).

5. The dry oil-free screw air compressor according to claim 1, characterized in that: The plurality of scrapers (7) are distributed in a ring-like shape with equal intervals.

6. The dry oil-free screw air compressor according to claim 2, characterized in that: The output shaft of the motor (13) is rotationally connected to the dry oil-free screw air compressor body (1) and the second power chamber (11).

7. The dry oil-free screw air compressor according to claim 3, characterized in that: The movable column (19) and the corresponding sliding rod (15) are an integrally formed structure.

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