An electric limiter

Abstract

The present invention relates to an electric limiter technology, which is used to solve the problems that oil stains on the outer side of a rotating screw rod easily cause dirt on other structures, affect the application of lubricating oil, and shorten the service life of the rotating screw rod and the connecting plate due to the increased friction between the rotating screw rod and the connecting plate caused by the reduction of lubricating oil. Specifically, it is an electric limiter, including a limiter shell; the present invention scrapes the oil stains on the rotating screw rod by a scraping plate, and the scraped oil stains enter the interior of a dust collecting box. When the squeezing plate inside the dust collecting box moves upward, it is affected by the limit button and tilts at an angle, so that the oil stains above the squeezing plate move to below the squeezing plate, and the oil stains above the squeezing plate are prevented from clogging the filter net when the squeezing plate moves downward. The squeezing plate on one end of the rotating screw rod pushes the oil storage box upward, so that the wiping sponge inside the wiping box can absorb the lubricating oil inside the oil storage box, so that the wiping sponge can evenly apply the lubricating oil to the outer side of the rotating screw, thereby reducing the friction between the rotating screw and the connecting plate.

Description

Technical Field

[0001] The invention relates to electric limiter technology, in particular to an electric limiter. Background Art

[0002] In the prior art, when the electric limiter is in use, the rotating screw generates a lot of heat due to the friction between the rotating screw and the connecting plate, which increases the temperature of the rotating screw. The lubricating oil applied to the outer side of the rotating screw is easily affected by the high temperature and easily produces oil stains. The reduction of lubricating oil intensifies the friction between the rotating screw and the connecting plate, and the shedding of oil stains easily pollutes other structures inside the limiter housing. After the oil stains are cleaned, the rotating screw and the connecting plate are easily increased due to the increased friction between them, resulting in aggravated wear between them, which shortens the service life of the limiter. Frequent replacement causes inconvenience to users and increases economic expenses.

[0003] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0004] The object of the present invention is to scrape the oil on the rotating screw by a scraper plate, and the scraped oil enters the dust box. The squeezing plate inside the dust box is affected by the limit button when moving upward and tilts at an angle, so that the oil above the squeezing plate moves to the bottom of the squeezing plate, to prevent the oil above the squeezing plate from clogging the filter screen when the squeezing plate moves downward. The squeezing plate on one end of the rotating screw pushes the oil storage tank upward, so that the wiping sponge inside the wiping box can absorb the lubricating oil inside the oil storage tank, so that the wiping sponge can evenly apply the lubricating oil to the outside of the rotating screw, thereby reducing the friction between the rotating screw and the connecting plate, solving the problems that the oil on the outside of the rotating screw easily causes dirt in other structures, affects the application of the lubricating oil, and the reduced friction between the rotating screw and the connecting plate shortens the service life, and an electric limiter is proposed.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An electric limiter comprises a limiter housing, a driving motor is installed on one side of the outer surface of the limiter housing, a transmission wheel is installed inside the limiter housing at a position corresponding to the output end of the driving motor, a rotating screw is rotatably connected to one side of the limiter housing close to the driving motor, a transmission wheel is also installed on the upper end of the rotating screw, the two transmission wheels are connected through a transmission belt, a connecting plate is slidably connected to the outer side wall of the rotating screw, a telescopic rod is installed on one side of the upper surface of the connecting plate, a limiting plate is integrally formed inside the limiter housing at a position corresponding to the connecting plate, and an embedded plate is provided at the middle position of one side of the limiting plate close to the connecting plate A screw rod is installed at the position of the rotating screw rod on the upper surface of the connecting plate corresponding to the position of the rotating screw rod, a scraper plate is installed on the upper end of the screw rod, and scraper rods are integrally formed on both sides of the scraper plate. A dust suction cover is provided at the outer wall of the rotating screw corresponding to the position of the scraper plate, and a dust suction pipe is integrally formed on the end of the dust suction cover away from the screw rod, a dust collecting box is installed at the position of the dust suction pipe on the upper surface of the connecting plate corresponding to the position of the dust suction pipe, a driving gear wheel is rotatably connected to the upper surface of the connecting plate corresponding to the position of the engaging tooth groove through a transmission shaft, an exhaust frame is provided at the outer wall of the dust suction pipe corresponding to the position of the driving gear wheel, and an exhaust pipe is installed on the side of the upper surface of the dust collecting box away from the dust suction pipe.

[0007] As a preferred embodiment of the present invention, an exhaust fan blade is rotatably connected inside the exhaust frame, a connecting wheel is installed at one end of the exhaust fan blade connecting shaft, and the connecting wheel is transmission-connected to the driving gear wheel through a transmission belt.

[0008] As a preferred embodiment of the present invention, a filter screen is slidably connected at the middle position of the upper surface of the dust box, a dirt squeezing plate is slidably connected to a side of the dust collection pipe inside the dust box, a telescopic plate is slidably connected to one end of the dirt squeezing plate close to the filter screen, a cavity is opened inside the dirt squeezing plate at the position corresponding to the telescopic plate, a return spring is installed inside the cavity at the position corresponding to the telescopic plate, and a dirt scraping inclined plate is installed on the lower surface of the inner lower surface of the dust box close to the filter screen.

[0009] As a preferred embodiment of the present invention, a rotating seat is installed in three directions on the upper surface of the dirt squeezing plate, and an adjusting screw 2 is rotatably connected to the two rotating seat positions on the same side of the upper surface of the dust box, and an adjusting screw 1 is rotatably connected to the other rotating seat position on the upper surface of the dust box, and a lower end of the adjusting screw is connected to the rotating seat through a connecting rod, and a cavity is also opened at the lower end of the adjusting screw corresponding to the position of the connecting rod, and a reset spring 2 is installed inside the cavity at the position corresponding to the connecting rod.

[0010] As a preferred embodiment of the present invention, a transmission wheel three is rotatably connected at the three rotating seat positions corresponding to the upper surface of the dust box, a support frame is installed at the position of the transmission shaft two on the upper surface of the dust box, a transmission gear three is installed at the position of the transmission shaft two outer wall corresponding to the transmission wheel three, a transmission gear four is rotatably connected at the position of the transmission gear three on the outer wall of the support frame, and a transmission wheel four is installed on the upper end of the transmission gear four connecting the shaft.

[0011] As a preferred embodiment of the present invention, a driving gear is rotatably connected to the lower surface of the connecting plate at a position corresponding to the engaging tooth groove through a connecting frame, and a transmission gear 1 is installed at one end of the driving gear connecting shaft, and a supporting frame is installed at a position corresponding to the rotating screw on the lower surface of the connecting plate, and a transmission gear 2 is rotatably connected to the outer wall of the support frame at a position corresponding to the transmission gear 1, and the transmission gear 2 is connected to the transmission wheel 2 through the transmission shaft 1.

[0012] As a preferred embodiment of the present invention, a wiping box is installed on the lower surface of the connecting plate near the middle position of the supporting frame, an oil storage tank is installed at the middle position of the lower surface of the wiping box, an extrusion plate is slidably connected to the lower surface of the inner part of the supporting frame corresponding to the position of the oil storage tank, a rotating screw is installed at the middle position of the lower surface of the extrusion plate, and a transmission wheel 2 is also installed at the lower end of the rotating screw.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When the connecting plate is moved by the rotating screw, the scraper plate mounted on one end of the spiral rod outside the rotating screw can scrape off the oil on the rotating screw. The scraped oil can be separated from the scraper plate under the action of gravity and the wind force generated by the exhaust fan blades and enter the dust box. When the squeezing plate inside the dust box moves upward, it is affected by the limit button and tilted at an angle, so that the oil above the squeezing plate moves to the bottom of the squeezing plate, preventing the oil above the squeezing plate from clogging the filter net when the squeezing plate moves downward. When the squeezing plate moves downward, the oil on the filter net can be scraped off, which is convenient for air circulation. In addition, the squeezing plate can compact the condensed oil to reduce the space occupied by the oil blocks.

[0015] 2. When the connecting plate is driven by the rotating screw to move, the rotating driving gear drives the second transmission wheel on the rotating screw to rotate, so that the extrusion plate on one end of the rotating screw pushes the oil storage tank upward, so that the wiping sponge inside the wiping box can absorb the lubricating oil inside the oil storage tank, and the wiping sponge can evenly apply the lubricating oil to the outside of the rotating screw, thereby reducing the friction between the rotating screw and the connecting plate and extending the service life of the limiter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0017] Figure 1 It is the main structure diagram of the present invention;

[0018] Figure 2 This is a diagram showing the internal structure of the limiter housing of the present invention;

[0019] Figure 3 It is a structural diagram of the spiral rod of the present invention;

[0020] Figure 4 It is a structural diagram of the support frame of the present invention;

[0021] Figure 5 It is a structural diagram of the dust collection cover of the present invention;

[0022] Figure 6 It is a structural diagram of the dirt squeezing plate of the present invention;

[0023] Figure 7 For the present invention Figure 6 A magnified structural diagram of part A;

[0024] In the figure: 1. stopper housing; 21. engaging tooth groove; 22. scraper plate; 23. screw rod; 24. support frame; 25. wiping box; 26. oil storage tank; 27. rotating screw; 28. extrusion plate; 29. ​​transmission wheel 2; 210. transmission shaft 1; 211. driving gear; 212. transmission gear 1; 213. transmission gear 2; 31. dust collection sleeve; 32. exhaust frame; 33. dust collection pipe; 34. transmission wheel 3; 35. adjusting screw 1; 36. exhaust Tube; 37, dust box; 38, transmission wheel four; 39, transmission gear three; 310, transmission gear four; 311, transmission shaft two; 312, driving gear wheel; 313, filter screen; 314, telescopic plate; 315, scraping inclined plate; 316, rotating seat; 317, squeezing plate; 318, connecting rod; 319, adjusting screw two; 4, telescopic rod; 5, connecting plate; 6, limit plate; 7, rotating screw; 8, driving motor; 9, transmission belt; 10, transmission wheel one. DETAILED DESCRIPTION

[0025] The technical scheme of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0026] See also Figure 5-7As shown, an electric limiter comprises a limiter housing 1, a driving motor 8 is installed on one side of the outer surface of the limiter housing 1, a transmission wheel 10 is installed at a position corresponding to the output end of the driving motor 8 inside the limiter housing 1, a rotating screw 7 is rotatably connected to one side of the limiter housing 1 close to the driving motor 8, a transmission wheel 10 is also installed on the upper end of the rotating screw 7, the two transmission wheels 10 are connected through a transmission belt 9, a connecting plate 5 is slidably connected to the outer wall of the rotating screw 7, a telescopic rod 4 is installed on one side of the upper surface of the connecting plate 5, a limiting plate 6 is integrally formed at a position corresponding to the connecting plate 5 inside the limiter housing 1, an engaging tooth groove 21 is provided at the middle position of one side of the limiting plate 6 close to the connecting plate 5, and the upper surface of the connecting plate 5 corresponds to the rotating screw 7 A spiral rod 23 is installed at the position, and a scraper plate 22 is installed on the upper end of the spiral rod 23. The scraper plate 22 is circular in shape, and the radius of the circle is the same as the radius of the groove on the spiral rod 23. Scraper rods are integrally formed on both sides of the scraper plate 22. A dust collection sleeve 31 is provided at the position of the scraper plate 22 corresponding to the outer wall of the rotating screw 7. A hole is opened on one side of the outer wall of the dust collection sleeve 31 corresponding to the position of the spiral rod 23 and the rotating screw 7. A dust collection pipe 33 is integrally formed at one end of the dust collection sleeve 31 away from the spiral rod 23. A dust collecting box 37 is installed at the position of the dust collection pipe 33 on the upper surface of the connecting plate 5. A driving gear wheel 312 is rotatably connected to the upper surface of the connecting plate 5 at the position corresponding to the engaging tooth groove 21 through the second transmission shaft 311. The engaging tooth groove 21 and the driving gear wheel 312 are interlocked with each other and are driven to rotate when the connecting plate 5 moves. An exhaust frame 32 is provided at the position of the driving gear wheel 312 on the outer wall of the dust suction pipe 33. An exhaust pipe 36 is installed on the side of the upper surface of the dust box 37 away from the dust suction pipe 33. An exhaust fan blade is rotatably connected inside the exhaust frame 32. A connecting wheel is installed at one end of the exhaust fan blade connecting shaft. The connecting wheel is connected to the driving gear wheel 312 through a transmission belt 9, so that the driving gear wheel 312 drives the exhaust fan blade to rotate to extract air at the position of the dust suction sleeve 31. A filter screen 313 is slidably connected at the middle position of the upper surface of the dust box 37. A dirt squeezing plate 317 is slidably connected to the side of the dust box 37 corresponding to the dust suction pipe 33. The dirt squeezing plate 317 slides close to the end of the dirt squeezing plate 317 near the filter screen 313. A telescopic plate 314 is connected, a cavity is opened inside the dirt squeezing plate 317 at the position corresponding to the telescopic plate 314, a return spring 1 is installed inside the cavity at the position corresponding to the telescopic plate 314, and the two ends of the return spring 1 are respectively connected to the telescopic plate 314 and the inner wall of the cavity, a dirt scraping inclined plate 315 is installed on the lower surface of the dust box 37 near the filter screen 313, and a rotating seat 316 is installed in three directions on the upper surface of the dirt squeezing plate 317, an adjusting screw 2 319 is rotatably connected to the position of the two rotating seats 316 on the same side of the upper surface of the dust box 37, and an adjusting screw 1 35 is rotatably connected to the position of the other rotating seat 316 on the upper surface of the dust box 37, and the lower end of the adjusting screw 1 35 is connected to the rotating seat 316 through a connecting rod 318.A cavity is also provided at the lower end of the adjusting screw 1 35 corresponding to the position of the connecting rod 318, and a reset spring 2 is installed inside the cavity at the position corresponding to the connecting rod 318. The two ends of the reset spring 2 are respectively connected to the connecting rod 318 and the inner wall of the cavity. A transmission wheel 3 34 is rotatably connected at the position corresponding to the three rotating seats 316 on the upper surface of the dust box 37. The transmission wheels 3 34 on the three rotating seats 316 are connected in pairs through the transmission belt 9, and one of the transmission wheels 3 34 is connected to the transmission wheel 4 38. The upper surface of the dust box 37 corresponds to the transmission shaft 2 311 A support frame is installed at the position of the transmission rotating shaft 2 311, and a transmission gear 3 39 is installed at the position of the transmission rotating wheel 3 34 on the outer wall of the transmission rotating shaft 2. A transmission gear 4 310 is rotatably connected to the position of the transmission gear 3 39 on the outer wall of the support frame. The transmission gear 3 39 and the transmission gear 4 310 are perpendicular to each other and interlock with each other and drive the rotation. A transmission rotating wheel 4 38 is installed at the upper end of the transmission gear 4 310 connected to the rotating shaft. A cavity is opened inside the dust collecting box 37 near the position of the telescopic plate 314. The cavity is connected to a limit button through a reset spring 2, and the upper end of the limit button is designed with an inclined angle.

[0027] In the prior art, when the electric limiter is in use, the rotating screw 7 generates a lot of heat due to the friction between the rotating screw 7 and the connecting plate 5, which increases the temperature of the rotating screw 7. The lubricating oil applied to the outside of the rotating screw 7 is easily affected by the high temperature and easily produces oil stains. The reduction of lubricating oil intensifies the friction between the rotating screw 7 and the connecting plate 5. The falling of oil stains easily causes pollution to other structures inside the limiter housing 1.

[0028] The scraper plate 22 on one end of the spiral rod 23 connected to the connecting plate 5 can scrape off the oil on the outside of the rotating screw 7. The scraped oil automatically detaches and falls into the dust collection sleeve 31 under the action of gravity. When the connecting plate 5 moves in position driven by the rotating screw 7, the driving gear wheel 312 can be engaged with the engaging tooth groove 21 on the limiting plate 6, so that the driving gear wheel 312 can be driven to rotate. During the rotation, the exhaust fan blades inside the exhaust frame 32 are driven to rotate by the transmission belt 9, so that the oil dropped at the position of the dust collection sleeve 31 can be moved to the position of the dust collection pipe 33 driven by the airflow, and fall into the dust collection box 37 through the dust collection pipe 33. When the wheel 312 rotates, the transmission gear 3 39 on the transmission shaft 2 311 can also drive the transmission gear 4 310 to rotate, so that the transmission wheel 4 38 connected to the same shaft as the transmission gear 4 310 drives the transmission wheel 3 34 to rotate through the transmission belt 9. The transmission wheel 3 34 sleeved on the outer side of the adjusting screw 1 35 and the adjusting screw 2 319 can drive the adjusting screw 1 35 and the adjusting screw 2 319 to raise their positions through the threads when rotating. When rising, one side of the sewage squeezing plate 317 is limited by the position of the limit button, so that when the sewage squeezing plate 317 continues to rise driven by the adjusting screw 1 35 and the adjusting screw 2 319, the sewage squeezing plate 317 is The dirt plate 317 is tilted toward one side of the limit button, so that the oil and dirt above the dirt squeezing plate 317 flows downward after tilting. During the tilting process of the dirt squeezing plate 317, the angles between the adjusting screw 1 35, the adjusting screw 2 319 and the rotating seat 316 are changed, and the connecting rod 318 in the cavity at the lower end of the adjusting screw 1 35 moves downward, causing the stretching deformation of the reset spring 2. After the end of the dirt squeezing plate 317 tilted downward passes the position of the limit button, the tilted side of the dirt squeezing plate 317 is reset under the action of the reset spring 2, so that the dirt squeezing plate 317 is reset to a state where it is level with the bottom surface of the dust collecting box 37, so that the telescopic plate 314 at one end of the dirt squeezing plate 317 It can be in close contact with the filter screen 313, so that when the connecting plate 5 moves in the opposite direction, the telescopic plate 314 follows the dirt squeezing plate 317 to move downward, and the telescopic plate 314 scrapes off the oil attached to the filter screen 313 without blocking the air circulation. When there is less oil inside the dust box 37, the telescopic plate 314 can contact the scraping inclined plate 315 after moving downward, and when being squeezed, the telescopic plate 314 moves its position in the internal cavity of the dirt squeezing plate 317 to ensure that the scraped oil can move to the side away from the filter screen 313, and the condensed oil blocks can be compacted under pressure to reduce the occupied space, and the bottom plate below the dust box 37 can be opened regularly for sewage discharge operations. Example 2

[0029] See also Figure 1-4As shown, a driving gear 211 is rotatably connected to the lower surface of the connecting plate 5 at a position corresponding to the engaging tooth groove 21 through a connecting frame. The driving gear 211 is engaged with the engaging tooth groove 21 on the limiting plate 6 and is driven to rotate when the connecting plate 5 moves. A transmission gear 1 212 is installed at one end of the driving gear 211 connected to the rotating shaft. A supporting frame 24 is installed at a position corresponding to the rotating screw 7 on the lower surface of the connecting plate 5. A transmission gear 2 213 is rotatably connected to the outer wall of the supporting frame 24 at a position corresponding to the transmission gear 1 212. The transmission gear 1 212 and the transmission gear 2 213 are perpendicular to each other and engage with each other and are driven to rotate. The transmission gear 213 is connected to the transmission wheel 29 through the transmission shaft 1 210. A wiping box 25 is installed on the lower surface of the connecting plate 5 near the middle position of the supporting frame 24. An oil storage tank 26 is installed at the middle position of the lower surface of the wiping box 25. An extrusion plate 28 is slidably connected to the position of the oil storage tank 26 on the inner lower surface of the supporting frame 24. A rotating screw 27 is installed in the middle position of the lower surface of the extrusion plate 28. A transmission wheel 29 is also installed at the lower end of the rotating screw 27. The transmission wheel 29 at the lower end of the rotating screw 27 is connected to the transmission wheel 29 at the upper end of the rotating shaft of the transmission gear 213 through a transmission belt 9.

[0030] In the prior art, after the oil stains are cleaned, the rotating screw 7 and the connecting plate 5 are easily worn due to the increased friction between them, which shortens the service life of the limiter. Frequent replacement causes inconvenience to users and increases economic expenses.

[0031] When the rotating screw 7 after the oil stain is cleaned moves to the position below the connecting plate 5, the driving gear 211 is driven to rotate, and the transmission gear 213 can be driven to rotate by the transmission gear 1 212 coaxial with the driving gear 211, so that the transmission wheel 29 coaxial with the transmission gear 213 is connected to the transmission wheel 29 at the upper end of the rotating screw 27. When the rotating screw 27 rotates, it is connected to the supporting frame 24 through a thread. When the extrusion plate 28 moves upward under the drive of the rotating screw 27, the oil in the oil storage tank 26 is squeezed. The lubricating oil stored in the wiping box 25 contacts the wiping sponge inside the wiping box 25, so that the wiping sponge absorbs the lubricating oil and circulates inside the wiping sponge, so that the wiping sponge that contacts the rotating screw 7 at the other end can wipe the lubricating oil to the outer surface of the rotating screw 7, so that the outer side of the rotating screw 7 is evenly coated with lubricating oil during the rotation of the rotating screw 7, so that when the rotating screw 7 rotates in the opposite direction driven by the driving motor 8, the outer side of the rotating screw 7 is coated with lubricating oil, the friction between the connecting plate 5 is reduced, and the wear caused by each other is reduced, so that the service life of the limiter is extended.

[0032] When the present invention is in use, the scraper plate 22 on one end of the spiral rod 23 connected to the connecting plate 5 can scrape off the oil on the outer side of the rotating screw 7, and the scraped oil automatically detaches and falls into the dust collection sleeve 31 under the action of gravity. When the connecting plate 5 is moved by the rotating screw 7, the driving gear wheel 312 can be engaged with the engaging tooth groove 21 on the limit plate 6, so that the driving gear wheel 312 can be driven to rotate. During the rotation, the exhaust fan blades inside the exhaust frame 32 are driven to rotate through the transmission belt 9, so that the oil dropped at the position of the dust collection sleeve 31 can be driven by the airflow to move to the position of the dust collection pipe 33, and fall into the dust collection box 37 through the dust collection pipe 33. When the driving gear wheel 312 rotates, the transmission gear 39 on the transmission shaft 2 311 can also drive the transmission gear 4 310 to rotate, so that the transmission wheel 4 38 connected to the same shaft as the transmission gear 4 310 drives the transmission wheel 3 34 to rotate through the transmission belt 9. The transmission wheel 3 34 sleeved on the outer side of the adjusting screw 1 35 and the adjusting screw 2 319 can drive the squeezing plate 317 at the bottom end of the adjusting screw 1 35 and the adjusting screw 2 319 to rise in position through the thread when rotating. When rising, one side of the squeezing plate 317 is limited by the position of the limit button, so that the squeezing plate 317 continues to rise under the drive of the adjusting screw 1 35 and the adjusting screw 2 319. When the dirt squeezing plate 317 is lifted up, it tilts toward one side of the limit button, so that the oil on the top of the dirt squeezing plate 317 flows downward after tilting. During the tilting process of the dirt squeezing plate 317, the angles between the adjusting screw 1 35, the adjusting screw 2 319 and the rotating seat 316 are changed, and the connecting rod 318 in the cavity at the lower end of the adjusting screw 1 35 moves downward, causing the stretching deformation of the reset spring 2. After the end of the dirt squeezing plate 317 tilted downward passes the position of the limit button, the tilted side of the dirt squeezing plate 317 is reset under the action of the reset spring 2, so that the dirt squeezing plate 317 is reset to a state where it is level with the bottom surface of the dust collecting box 37, so that the telescopic plate 317 at one end of the dirt squeezing plate 317 is 14 can be in close contact with the filter screen 313, so that when the connecting plate 5 moves in the reverse direction, the telescopic plate 314 follows the dirt squeezing plate 317 to move downward, and the telescopic plate 314 scrapes off the oil dirt attached to the filter screen 313 without blocking the air circulation. When there is less oil dirt inside the dust box 37, the telescopic plate 314 can contact the scraping inclined plate 315 after moving downward, and when being squeezed, the telescopic plate 314 moves its position in the internal cavity of the dirt squeezing plate 317 to ensure that the scraped oil dirt can move to the side away from the filter screen 313, and the condensed oil dirt blocks can be compacted under pressure to reduce the occupied space, and the bottom plate below the dust box 37 can be opened regularly for sewage discharge operation.

[0033] When the rotating screw 7 after the oil stain is cleaned moves to the position below the connecting plate 5, the driving gear 211 is driven to rotate, and the transmission gear 213 can be driven to rotate by the transmission gear 1 212 coaxial with the driving gear 211, so that the transmission wheel 29 coaxial with the transmission gear 213 is connected to the transmission wheel 29 at the upper end of the rotating screw 27. When the rotating screw 27 rotates, it is connected to the supporting frame 24 through a thread. When the extrusion plate 28 moves upward under the drive of the rotating screw 27, the oil in the oil storage tank 26 is squeezed. The lubricating oil stored in the wiping box 25 contacts the wiping sponge inside the wiping box 25, so that the wiping sponge absorbs the lubricating oil and circulates inside the wiping sponge, so that the wiping sponge that contacts the rotating screw 7 at the other end can wipe the lubricating oil to the outer surface of the rotating screw 7, so that the outer side of the rotating screw 7 is evenly coated with lubricating oil during the rotation of the rotating screw 7, so that when the rotating screw 7 rotates in the opposite direction driven by the driving motor 8, the outer side of the rotating screw 7 is coated with lubricating oil, the friction between the connecting plate 5 is reduced, and the wear caused by each other is reduced, so that the service life of the limiter is extended.

[0034] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An electric limiter, comprising a limiter housing (1), a driving motor (8) being mounted on one side of the outer surface of the limiter housing (1), a transmission wheel (10) being mounted inside the limiter housing (1) at a position corresponding to the output end of the driving motor (8), a rotating screw (7) being rotatably connected to one side of the limiter housing (1) close to the driving motor (8), a transmission wheel (10) being also mounted on the upper end of the rotating screw (7), the two transmission wheels (10) being connected in transmission via a transmission belt (9), a connecting plate (5) being slidably connected to the outer wall of the rotating screw (7), a telescopic rod (4) being mounted on one side of the upper surface of the connecting plate (5), a limit plate (6) being integrally formed inside the limiter housing (1) at a position corresponding to the connecting plate (5), characterized in that: The limiting plate (6) is provided with an engaging tooth groove (21) at a middle position on one side close to the connecting plate (5); a screw rod (23) is installed on the upper surface of the connecting plate (5) at a position corresponding to the rotating screw rod (7); a dirt scraping plate (22) is installed on the upper end of the screw rod (23); dirt scraping rods are integrally formed on both sides of the dirt scraping plate (22); a dust collection sleeve (31) is provided on the outer wall of the rotating screw rod (7) at a position corresponding to the dirt scraping plate (22); a dust collection pipe (33) is integrally formed on one end of the dust collection sleeve (31) away from the screw rod (23); A dust box (37) is installed at a position on the upper surface of the connecting plate (5) corresponding to the dust suction pipe (33); a driving gear wheel (312) is rotatably connected to a position on the upper surface of the connecting plate (5) corresponding to the engaging tooth groove (21) via a second transmission shaft (311); the engaging tooth groove (21) and the driving gear wheel (312) are engaged with each other; an exhaust frame (32) is provided at a position on the outer side wall of the dust suction pipe (33) corresponding to the driving gear wheel (312); and an exhaust pipe (36) is installed on a side of the upper surface of the dust box (37) away from the dust suction pipe (33); An exhaust fan blade is rotatably connected inside the exhaust frame (32), and a connecting wheel is installed at one end of the exhaust fan blade connecting shaft, and the connecting wheel is transmission-connected to the driving gear wheel (312) via a transmission belt (9).

2. An electric limiter according to claim 1, characterized in that: A filter screen (313) is slidably connected to the middle position of the upper surface of the dust collecting box (37); a dirt squeezing plate (317) is slidably connected to a side of the dust collecting tube (33) inside the dust collecting box (37); a telescopic plate (314) is slidably connected to one end of the dirt squeezing plate (317) close to the filter screen (313); a cavity is provided inside the dirt squeezing plate (317) at a position corresponding to the telescopic plate (314); a return spring 1 is installed inside the cavity at a position corresponding to the telescopic plate (314); and a dirt scraping inclined plate (315) is installed on the lower surface of the dust collecting box (37) at a position close to the filter screen (313).

3. An electric limiter according to claim 2, characterized in that: Rotating seats (316) are installed on the upper surface of the dirt squeezing plate (317) in three directions; a second adjusting screw (319) is rotatably connected to the upper surface of the dust collecting box (37) at positions corresponding to the two rotating seats (316) on the same side; a first adjusting screw (35) is rotatably connected to the upper surface of the dust collecting box (37) at a position corresponding to the other rotating seat (316); the lower end of the first adjusting screw (35) is connected to the rotating seat (316) via a connecting rod (318); a cavity is also provided at the lower end of the first adjusting screw (35) at a position corresponding to the connecting rod (318); and a second reset spring is installed inside the cavity at a position corresponding to the connecting rod (318).

4. The electric limiter according to claim 3, characterized in that: A transmission wheel three (34) is rotatably connected to the upper surface of the dust box (37) at positions corresponding to the three rotating seats (316); a support frame is installed at a position corresponding to the transmission shaft two (311) on the upper surface of the dust box (37); a transmission gear three (39) is installed at a position corresponding to the transmission shaft three (34) on the outer wall of the transmission shaft two (311); a transmission gear four (310) is rotatably connected to the outer wall of the support frame at a position corresponding to the transmission gear three (39); and a transmission wheel four (38) is installed at the upper end of the transmission gear four (310) connected to the shaft.

5. The electric limiter according to claim 1, characterized in that: A driving gear (211) is rotatably connected to the lower surface of the connecting plate (5) at a position corresponding to the engaging tooth groove (21) via a connecting frame, and a transmission gear 1 (212) is installed at one end of the driving gear (211) connected to the rotating shaft. A supporting frame (24) is installed at a position corresponding to the rotating screw (7) on the lower surface of the connecting plate (5), and a transmission gear 2 (213) is rotatably connected to the outer wall of the supporting frame (24) at a position corresponding to the transmission gear 1 (212), and the transmission gear 2 (213) is connected to the transmission rotating wheel 2 (29) via the transmission rotating shaft 1 (210).

6. An electric limiter according to claim 5, characterized in that: A wiping box (25) is installed on the lower surface of the connecting plate (5) near the middle position of the supporting frame (24), an oil storage tank (26) is installed on the middle position of the lower surface of the wiping box (25), an extrusion plate (28) is slidably connected to the lower surface of the support frame (24) at a position corresponding to the oil storage tank (26), a rotating screw (27) is installed on the middle position of the lower surface of the extrusion plate (28), and a transmission wheel 2 (29) is also installed on the lower end of the rotating screw (27).

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