Air purification device for building ventilation

Abstract

The invention relates to the technical field of dust removal, and discloses an air purification device for building ventilation, the air purification device comprises a purification box and an introduction mechanism, the purification box is provided with an air inlet and an air outlet, and the air outlet is provided with a purification layer; a fixing plate and filter screens located on the two sides of the fixing plate are arranged in the purification box, cylindrical blocks are vertically connected to the fixing plate at equal intervals, transverse grooves are formed in the two ends of each cylindrical block, and transverse blocks are slidably connected into the transverse grooves; the transverse block can transversely move on the filter screen; the ends, away from the transverse grooves, of the transverse blocks are circumferentially provided with a plurality of bristles at equal intervals, the ends, close to the transverse blocks, of the bristles are located in the transverse grooves, the side faces of the bristles abut against the edges of notches of the transverse grooves, the bristles are inclined, the free ends of the bristles penetrate through the filter screens, and the filter screens are located on the motion trails of the side faces of the bristles. The adjusting mechanism is used for adjusting the distance between the transverse blocks on the two sides of the cylindrical block. According to the scheme, the problem that more and more dust is accumulated on a filter screen in existing equipment, and then the filter screen is blocked is mainly solved.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal, and in particular to an air purification device for building ventilation. Background Art

[0002] At present, most of the rooms in buildings are designed to be relatively closed, and the indoor air cannot circulate well. Without good ventilation, the air is prone to become turbid, which is not conducive to people's health. Therefore, centrifugal fans are often used to ventilate buildings. However, traditional centrifugal fans will have a lot of dust accumulated on the impeller during use, which will affect its lifespan.

[0003] To solve the above problems, a Chinese patent with publication number CN218882547U discloses a low-noise centrifugal fan for building ventilation, including a fan housing, a protective cover and a drive motor; the patent sets a wind window and a filter net. When in use, the outside air passes through the filter net through the centrifugal force and enters the fan, thereby filtering the air entering the fan to prevent dust in the air from entering the fan and affecting the service life of the fan.

[0004] The above patent has the following problems during actual use: although the dust in the air can be filtered through the filter, as the use time increases, more and more dust will accumulate on the filter, which will cause blockage of the filter and directly affect the ventilation effect; if the filter is removed for cleaning or replacement, the operation is cumbersome. Summary of the invention

[0005] The present invention is intended to provide an air purification device for building ventilation, so as to solve the problem that more and more dust accumulates on the filter screen in the existing equipment, thereby causing clogging of the filter screen.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an air purification device for building ventilation, comprising a purification box and an introduction mechanism for introducing external air into the box, the purification box is provided with an air inlet and an air outlet, and the air outlet is provided with a purification layer; a fixed plate and a filter screen located on both sides of the fixed plate are provided in the purification box, cylindrical blocks are vertically equidistantly connected to the fixed plate, both ends of the cylindrical block are provided with transverse grooves, and transverse blocks are slidably connected in the transverse grooves; the transverse block passes through the filter screen, and the transverse block can move laterally on the filter screen; a plurality of bristles are circumferentially equidistantly provided at one end of the transverse block away from the transverse groove, and an end of the bristles close to the transverse block is located in the transverse groove, the side faces of the bristles are against the edge of the notch of the transverse groove, the bristles are inclined, the free ends of the bristles pass through the filter screen, and the filter screen is located on the movement trajectory of the side faces of the bristles; and also includes an adjustment mechanism for adjusting the spacing between the transverse blocks on both sides of the cylindrical block.

[0007] The principles and advantages of this solution are:

[0008] 1. This solution uses two filters to filter dust in the air, and the filtering effect is better; the filtered air is purified through the purification layer and finally discharged from the air outlet; compared with the existing technology, this solution can make the two horizontal blocks approach and move away through the adjustment mechanism, thereby driving the bristles to act on the filter, so as to clean the filter, avoid clogging of the filter, and ensure the filtering and ventilation effects.

[0009] 2. In this scheme, when the two horizontal blocks are moving away from each other, the bristles move out of the horizontal grooves, and the bristles recover under the action of their own elasticity, so that the bristles are perpendicular to the horizontal blocks; the horizontal blocks continue to move, so that the horizontal blocks drive the bristles close to the filter, and the side surfaces of the bristles act on the filter. On the one hand, it can have an impact effect on the filter, causing the filter to vibrate, causing the dust on the filter to fall off, and avoiding clogging of the filter; on the other hand, the side surfaces of the bristles can also be used to clean the filter, avoiding clogging of the filter.

[0010] 3. In this scheme, when the two transverse blocks are close to each other, the end of the bristles close to the transverse block extends into the transverse groove, and the side surface of the bristles is against the edge of the notch of the transverse groove. The bristles are tilted, and the free ends of the bristles pass through the filter screen, that is, the free ends of the bristles are used to clean the filter screen to avoid clogging of the filter screen.

[0011] Furthermore, the adjustment mechanism includes a chamber opened inside the purification box and slide grooves opened on both sides of the top of the purification box. A motor is arranged in the chamber, and the motor is fixed in the chamber. The output shaft of the motor is coaxially connected with the rotating shaft, and the rotating shaft is coaxially connected with an elliptical block; the slide groove is communicated with the chamber, and an adjustment block is slidably connected in the slide groove. A first spring is arranged between the adjustment block and the slide groove, and the adjustment block is connected to an end of the transverse block away from the transverse groove; the adjustment block and the elliptical block are against each other.

[0012] Through the above arrangement, the output shaft of the motor drives the elliptical block to rotate. When the two long-axis ends of the elliptical block respectively abut against the two adjusting blocks, the elliptical block squeezes the adjusting block to move laterally along the path of the slide groove, and the first spring is compressed, so that the two adjusting blocks move away from each other, that is, the distance between the two adjusting blocks increases; when the two short-axis ends of the elliptical block respectively abut against the two adjusting blocks, the squeezing effect of the elliptical block on the adjusting block disappears, so that the adjusting block moves laterally in the opposite direction along the path of the slide groove, and the two adjusting blocks approach each other, that is, the distance between the two adjusting blocks decreases; therefore, the adjusting block can reciprocate laterally.

[0013] Furthermore, an annular groove is provided at the notch of the transverse groove, and the width of the annular groove gradually decreases from one end of the notch of the transverse groove to the other end of the transverse groove.

[0014] Through the above arrangement, one end of the bristles close to the transverse block extends into the transverse groove, and the annular groove can guide the bending of the bristles; and the annular groove replaces the notch of the transverse groove to increase the contact area with the side of the bristles, making the force on the bristles more uniform and extending the service life of the bristles.

[0015] Furthermore, the cylindrical block is rotatably connected to the fixed plate, the end of the transverse block away from the transverse groove is rotatably connected to the adjustment block, the transverse block can rotate on the filter screen, and a gear is fixed to the cylindrical block; a vertical groove is provided on the top of the purification box, a rack is slidably connected in the vertical groove, and the rack is meshed with the gear; it also includes a lifting mechanism that drives the rack to reciprocate vertically as the rotating shaft rotates.

[0016] Through the above arrangement, during the rotation of the rotating shaft, the rack is driven to move vertically back and forth through the lifting mechanism, and the meshing of the rack and the gear drives the cylindrical block to rotate, thereby driving the bristles on the transverse block to rotate; when the side of the bristles acts on the filter, the transverse block rotates, which can enhance the cleaning effect of the side of the bristles on the filter and avoid clogging of the filter; when the end of the bristles passes through the filter, the transverse block rotates, so that the end of the bristles continuously enters and exits the filter, thereby enhancing the cleaning effect of the filter and avoiding clogging of the filter.

[0017] Furthermore, the lifting mechanism includes a cylindrical cam coaxially connected to the rotating shaft and a lifting block fixed to the rack. The cylindrical cam is provided with a curved groove, in which an auxiliary block is slidably connected. The auxiliary block is fixed to the lifting block, and the lifting block is slidably connected to the vertical groove.

[0018] Through the above arrangement, during the rotation of the shaft, the shaft can also drive the cylindrical cam to rotate, the cylindrical cam drives the lifting block to reciprocate vertically through the curved groove and the auxiliary block, and the lifting block drives the rack to reciprocate vertically.

[0019] Furthermore, an inner chamber is provided in the regulating block, and a plurality of side holes are provided on the regulating block, the side holes are communicated with the inner chamber, and the side holes are arranged toward the filter screen; and a water supply mechanism is also included for introducing clean water into the inner chamber as the rack moves vertically back and forth.

[0020] Through the above arrangement, during the vertical reciprocating motion of the rack, clean water can be introduced into the inner chamber through the water supply mechanism, and the clean water is sprayed out through the side holes to act on the filter, so that the filter can be flushed, the cleaning effect of the filter is enhanced, and the filter is prevented from being blocked; and, since the adjusting block can reciprocate horizontally, the distance between the adjusting block and the filter changes continuously, and the position of the clean water sprayed from the side holes acting on the filter will also change accordingly, that is, the flushing area of ​​the filter is expanded, the cleaning effect of the filter is enhanced, and the filter is prevented from being blocked.

[0021] Furthermore, the water supply mechanism includes a bottom chamber opened inside the purification box and a guide groove opened at the bottom of the purification box. A piston cylinder and a water tank are arranged in the bottom chamber, and a piston block is slidably connected in the piston cylinder; an inlet pipe and an outlet pipe are connected in the piston cylinder, the inlet pipe is connected to the water tank, and both sides of the outlet pipe are connected to diverter pipes, the diverter pipe is fixedly connected to the regulating block, and the diverter pipe is connected to the inner chamber; the guide groove is connected to the bottom chamber, the rack is slidably connected to the guide groove, and the rack is fixedly connected to the piston block.

[0022] Through the above arrangement, during the vertical reciprocating motion of the rack, the rack drives the piston block to reciprocate vertically, so that the clean water in the water tank can be continuously sprayed out from the side hole through the water inlet pipe, piston cylinder, water outlet pipe, diversion pipe, and inner chamber to act on the filter.

[0023] Furthermore, wall grooves are provided on both sides of the purification box, and the two wall grooves are located between the two filter screens; a push block is slidably connected in the wall groove, a second spring is provided between the push block and the wall groove, the push block is against the bottom of the purification box, and an inclined surface is provided on the push block; recovery grooves are provided on both sides of the bottom of the purification box, and the two recovery grooves are located between the two filter screens, and the inclined surface is arranged in the direction of the recovery groove; a discharge port is provided on the purification box, the discharge port is communicated with the recovery groove, and a sealing block is detachably connected to the discharge port; and it also includes a power mechanism for adjusting the distance between the two push blocks as the rack moves vertically back and forth.

[0024] Through the above arrangement, the mixture of dust and water cleaned by the filter screen will fall onto the inclined surface of the push block, and then be guided so that the mixture of dust and water is collected in the recovery tank.

[0025] During the vertical reciprocating motion of the rack, the two push blocks are moved away and closer through the power mechanism; when the two push blocks move away, the push blocks push the mixture of dust and water at the bottom of the purification box into the recovery tank, thereby improving the recovery rate; when the two push blocks approach, the push blocks move in the opposite direction and reset themselves for the next work.

[0026] Furthermore, the power mechanism includes wedge blocks fixedly connected to both sides of the rack and wedge surfaces arranged on the push block, and the wedge surfaces are located on the movement track of the wedge blocks.

[0027] Through the above arrangement, when the rack moves downward, the rack drives the wedge block to move downward, so that the wedge block extrusion inclined surface drives the push block to move toward the recovery groove, and the second spring is stretched; when the rack moves upward, the effect of the wedge block on the push block through the wedge surface disappears, so that the push block moves in the opposite direction and resets under the action of the second spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a front view of an embodiment of an air purification device for building ventilation according to the present invention.

[0029] Figure 2 for Figure 1 Partial cross-sectional view from the main viewing direction.

[0030] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0031] Figure 4 for Figure 2 Enlarged view of point B in the middle. DETAILED DESCRIPTION

[0032] The following is further described in detail through specific implementation methods:

[0033] The figure marks in the drawings of the specification include: purification box 10, centrifugal fan 11, air inlet 12, air outlet 13, purification layer 14, fixed plate 20, filter screen 21, cylindrical block 22, transverse groove 23, annular groove 231, transverse block 24, bristles 25, chamber 30, slide groove 31, motor 32, elliptical block 33, adjustment block 34, first spring 35, gear 40, rack 41, cylindrical cam 42, curved groove 43, lifting block 44, inner chamber 50, side hole 51, bottom chamber 52, guide groove 53, piston cylinder 54, water tank 55, piston block 56, water inlet pipe 57, water outlet pipe 58, diverter pipe 59, blocking block 60, wall groove 70, push block 71, second spring 72, inclined surface 73, recovery groove 74, sealing block 75, wedge block 76, wedge surface 77.

[0034] Example

[0035] Basically as attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 As shown: An air purification device for building ventilation includes a purification box 10 and an introduction mechanism for introducing outside air into the box, the introduction mechanism is a centrifugal fan 11, and the centrifugal fan 11 is fixedly connected to the right side of the purification box 10. The purification box 10 is provided with an air inlet 12 and an air outlet 13, the air inlet 12 is arranged on the left side of the purification box 10, and the air outlet 13 is arranged on the right side of the purification box 10; a purification layer 14 is fixedly connected to the air outlet, and the purification layer 14 is an activated carbon particle layer.

[0036] A fixed plate 20 and a filter screen 21 located on both sides of the fixed plate 20 are fixedly connected in the purification box 10. A cylindrical block 22 is vertically equidistantly rotatably connected to the fixed plate 20. Both ends of the cylindrical block 22 are provided with a transverse groove 23. A transverse block 24 is slidably connected in the transverse groove 23. The transverse block 24 passes through the filter screen 21. The transverse block 24 can move transversely on the filter screen 21 and can also rotate on the filter screen 21. A plurality of bristles 25 are circumferentially equidistantly fixed to one end of the transverse block 24 away from the transverse groove 23. The bristles 25 close to the transverse block 24 are fixedly connected to the filter screen 21. One end is located in the transverse groove 23, the side of the bristles 25 is against the edge of the groove of the transverse groove 23, the bristles 25 are inclined, and the free ends of the bristles 25 pass through the filter 21; during the movement of the transverse block 24 in the direction away from the transverse groove 23, the transverse block 24 drives the bristles 25 to move synchronously, the bristles 25 move out of the transverse groove 23, and the bristles 25 recover under the action of their own elasticity, so that the bristles 25 are perpendicular to the transverse block 24; the transverse block 24 drives the bristles 25 to approach the filter 21, so that the side of the bristles 25 acts on the filter 21.

[0037] It also includes an adjustment mechanism for adjusting the spacing between the lateral blocks 24 on both sides of the cylindrical block 22. The adjustment mechanism includes a chamber 30 opened inside the purification box 10 and a slide 31 opened on both sides of the top of the purification box 10. A motor 32 is fixedly connected in the chamber 30. The motor 32 is fixed in the chamber 30. The output shaft of the motor 32 is coaxially connected with a rotating shaft. The rotating shaft is rotatably connected to the chamber 30, and an elliptical block 33 is coaxially connected to the rotating shaft; the slide 31 is communicated with the chamber 30, and an adjustment block 34 is slidably connected in the slide 31. A first spring 35 is provided between the adjustment block 34 and the slide 31; the adjustment block 34 is cylindrical, and the diameter of the adjustment block 34 is smaller than the width of the filter 21. The bottom of the adjustment block 34 is in friction contact with the bottom of the purification box 10. The distance between the two adjustment blocks 34 is greater than the distance between the two filter screens 21 . One end of the transverse block 24 away from the transverse groove 23 is rotatably connected to the adjustment block 34 . The adjustment block 34 abuts against the elliptical block 33 , and the elliptical block 33 can rotate in the two slide grooves 31 .

[0038] The cylindrical block 22 is rotatably connected to the fixed plate 20, and a gear 40 is fixed to the cylindrical block 22; a vertical groove is opened at the top of the purification box 10, and a rack 41 is slidably connected in the vertical groove, and the rack 41 is meshed with the gear 40; it also includes a lifting mechanism that drives the rack 41 to reciprocate vertically as the rotating shaft rotates, and the lifting mechanism includes a cylindrical cam 42 coaxially connected to the rotating shaft, and a lifting block 44 fixed to the rack 41, a curved groove 43 is opened on the cylindrical cam 42, and an auxiliary block is slidably connected in the curved groove 43, the auxiliary block is fixed to the lifting block 44, and the lifting block 44 is slidably connected to the vertical groove.

[0039] The regulating block 34 has an inner chamber 50, and a plurality of side holes 51 are formed on the regulating block 34. The side holes 51 are connected to the inner chamber 50, and the side holes 51 are arranged toward the filter screen 21. The regulating block 34 also includes a water supply mechanism for introducing clean water into the inner chamber 50 as the rack 41 reciprocates vertically. The water supply mechanism includes a bottom chamber 52 formed inside the purification box 10, and a guide groove 53 formed at the bottom of the purification box 10. A piston cylinder 54 and a water tank 55 are fixedly connected in the bottom chamber 52, and a piston block 56 is slidably connected in the piston cylinder 54. A water inlet pipe 57 and a water outlet pipe 58 are connected in the piston cylinder 54, and the water inlet pipe 57 and the water outlet pipe 58 are connected in the piston cylinder 54. 7 is connected to the water tank 55, and both sides of the water outlet pipe 58 are connected to the shunt pipe 59, which is a hose of sufficient length; the shunt pipe 59 passes through the bottom of the purification box 10 and is fixedly connected to the adjustment block 34, and the shunt pipe 59 is connected to the inner chamber 50; the water inlet pipe 57 is installed with a first one-way valve for clean water to enter the piston cylinder 54 from the water tank 55 in one direction, and the water outlet pipe 58 is installed with a second one-way valve for clean water to enter the shunt pipe 59 from the piston cylinder 54 in one direction; the guide groove 53 is connected to the bottom chamber 52, the rack 41 is slidably connected to the guide groove 53, and the rack 41 is fixedly connected to the piston block 56. The purification box 10 is provided with an auxiliary groove, which is connected to the bottom chamber 52, and a blocking block 60 is threadedly connected in the auxiliary groove, so as to facilitate the addition of water to the water tank 55, and the water tank 55 adopts a common water tank 55 on the market.

[0040] Wall grooves 70 are provided on both sides of the purification box 10, and the two wall grooves 70 are located between the two filter screens 21; a push block 71 is slidably connected in the wall groove 70, and a second spring 72 is fixedly connected between the push block 71 and the wall groove 70, and the two push blocks 71 are respectively located on both sides of the rack 41; the push block 71 is against the bottom of the purification box 10, and an inclined surface 73 is provided on the push block 71, and the spacing between the two inclined surfaces 73 gradually increases from top to bottom; recovery grooves 74 are provided on both sides of the bottom of the purification box 10, and the width of the recovery groove 74 on the left is greater than that of the recovery groove 74 on the right, and the two recovery grooves 74 are located between the two filter screens 2 1, two recovery grooves 74 are respectively located on both sides of the rack 41, the spacing between the two recovery grooves 74 is greater than the spacing between the two push blocks 71, and the inclined surface 73 is arranged in the direction of the recovery groove 74; the purification box 10 is provided with a discharge port, two discharge ports are communicated with the recovery groove 74, and a sealing block 75 is threadedly connected to the discharge port; it also includes a power mechanism for adjusting the spacing between the two push blocks 71 as the rack 41 reciprocates vertically, and the power mechanism includes wedge blocks 76 fixedly connected to both sides of the rack 41, and a wedge surface 77 arranged on the push block 71, and the wedge surface 77 is located on the movement trajectory of the wedge block 76.

[0041] The specific implementation process is as follows:

[0042] When in use, the centrifugal fan 11 is started to introduce external air into the purification box 10, so that the air moves from left to right and passes through the two filters 21 to filter the dust in the air. The filtered air is purified by the purification layer 14 and finally discharged from the air outlet 13.

[0043] Start the motor 32, and the output shaft of the motor 32 drives the elliptical block 33 to rotate; when the two long-axis ends of the elliptical block 33 respectively abut against the two adjusting blocks 34, the elliptical block 33 squeezes the adjusting block 34 to move laterally along the path of the slide groove 31, and the first spring 35 is compressed, so that the two adjusting blocks 34 move away from each other, that is, the distance between the two adjusting blocks 34 increases; when the two short-axis ends of the elliptical block 33 respectively abut against the two adjusting blocks 34, the squeezing effect of the elliptical block 33 on the adjusting block 34 disappears, so that the adjusting block 34 moves laterally in the opposite direction along the path of the slide groove 31, and the two adjusting blocks 34 approach each other, that is, the distance between the two adjusting blocks 34 decreases; therefore, the adjusting block 34 can reciprocate laterally.

[0044] When the two adjustment blocks 34 are moving away from each other, the adjustment block 34 drives the transverse block 24 to move in the direction away from the transverse groove 23, so that the bristles 25 move out of the transverse groove 23, and the bristles 25 recover under the action of their own elasticity, so that the bristles 25 are perpendicular to the transverse block 24; the transverse block 24 continues to move, so that the transverse block 24 drives the bristles 25 to approach the filter 21, and the side of the bristles 25 acts on the filter 21, on the one hand, it can have an impact effect on the filter 21, so that the filter 21 vibrates, prompting the dust on the filter 21 to fall off, and avoid clogging of the filter 21; on the other hand, the side of the bristles 25 can also be used to clean the filter 21, so as to avoid clogging of the filter 21.

[0045] When the two adjustment blocks 34 are close to each other, the adjustment block 34 drives the transverse block 24 to move in the opposite direction, so that the end of the bristles 25 close to the transverse block 24 extends into the transverse groove 23, and the side surface of the bristles 25 abuts against the edge of the notch of the transverse groove 23, the bristles 25 are tilted, and the free ends of the bristles 25 pass through the filter screen 21, that is, the free ends of the bristles 25 are used to clean the filter screen 21 to avoid clogging of the filter screen 21.

[0046] During the rotation of the shaft, the shaft can also drive the cylindrical cam 42 to rotate. The cylindrical cam 42 drives the lifting block 44 to reciprocate vertically through the curved groove 43 and the auxiliary block. The lifting block 44 drives the rack 41 to reciprocate vertically. The rack 41 engages with the gear 40 to drive the cylindrical block 22 to rotate, thereby driving the bristles 25 on the transverse block 24 to rotate; when the side of the bristles 25 acts on the filter 21, the transverse block 24 rotates, which can enhance the cleaning effect of the side of the bristles 25 on the filter 21 and avoid clogging of the filter 21; when the end of the bristles 25 passes through the filter 21, the transverse block 24 rotates, so that the end of the bristles 25 continuously enters and exits the filter 21, thereby enhancing the cleaning effect on the filter 21 and avoiding clogging of the filter 21.

[0047] During the vertical reciprocating motion of the rack 41, the rack 41 drives the piston block 56 to reciprocate vertically, so that the clean water in the water tank 55 can be continuously sprayed out from the side hole 51 through the water inlet pipe 57, the piston cylinder 54, the water outlet pipe 58, the diverter pipe 59, and the inner chamber 50 to act on the filter 21, so that the filter 21 can be flushed, the cleaning effect of the filter 21 is enhanced, and the filter 21 is prevented from being blocked; and, because the adjustment block 34 can reciprocate horizontally, the distance between the adjustment block 34 and the filter 21 is continuously changed, and the position of the clean water sprayed from the side hole 51 acting on the filter 21 will also change accordingly, that is, the flushing area of ​​the filter 21 is expanded, the cleaning effect of the filter 21 is enhanced, and the filter 21 is prevented from being blocked.

[0048] The dust and water mixture cleaned by the filter 21 will fall onto the inclined surface 73 of the push block 71, and then guide it so that the dust and water mixture is collected in the recovery tank 74; when the rack 41 moves downward, the rack 41 drives the wedge block 76 to move downward, so that the wedge block 76 squeezes the inclined surface 73 to drive the push block 71 to move in the direction of the recovery tank 74, and the second spring 72 stretches, so that the push block 71 pushes the dust and water mixture at the bottom of the purification box 10 into the recovery tank 74, thereby improving the recovery rate; after a period of use, the sealing block 75 is removed from the discharge port, and the dust and water mixture can be discharged, which is convenient for cleaning. When the rack 41 moves upward, the effect of the wedge block 76 on the push block 71 through the wedge surface 77 disappears, so that the push block 71 moves in the opposite direction and resets under the action of the second spring 72 for the next work.

[0049] In the present embodiment, an annular groove 231 is formed at the notch of the transverse groove 23, and the width of the annular groove 231 gradually decreases from one end of the notch of the transverse groove 23 to the other end of the transverse groove 23, that is, the width of the annular groove 231 gradually decreases from the end of the cylindrical block 22 to the middle of the cylindrical block 22; the end of the bristles 25 close to the transverse block 24 extends into the transverse groove 23, and the annular groove 231 can guide the bending of the bristles 25; and, the annular groove 231 replaces the notch of the transverse groove 23 to increase the contact area with the side of the bristles 25, so that the force on the bristles 25 is more uniform, thereby extending the service life of the bristles 25.

[0050] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An air purification device for building ventilation, comprising a purification box and an introduction mechanism for introducing outside air into the box, the purification box is provided with an air inlet and an air outlet, and the air outlet is provided with a purification layer; characterized in that: A fixed plate and filter screens on both sides of the fixed plate are provided in the purification box, cylindrical blocks are connected vertically and equidistantly on the fixed plate, transverse grooves are provided at both ends of the cylindrical block, and transverse blocks are slidably connected in the transverse grooves; the transverse block passes through the filter screen, and the transverse block can move laterally on the filter screen; a plurality of bristles are equidistantly provided circumferentially on the end of the transverse block away from the transverse groove, and the end of the bristles close to the transverse block is located in the transverse groove, the side faces of the bristles are butted against the edge of the notch of the transverse groove, the bristles are inclined, and the free ends of the bristles pass through the filter screen, and the filter screen is located on the movement trajectory of the side faces of the bristles; and an adjustment mechanism for adjusting the spacing between the transverse blocks on both sides of the cylindrical block is also included.

2. The air purification device for building ventilation according to claim 1, characterized in that: The adjustment mechanism includes a chamber opened inside the purification box and slide grooves opened on both sides of the top of the purification box. A motor is arranged in the chamber, and the motor is fixed in the chamber. The output shaft of the motor is coaxially connected with a rotating shaft, and an elliptical block is coaxially connected to the rotating shaft; the slide groove is communicated with the chamber, and an adjustment block is slidably connected in the slide groove. A first spring is arranged between the adjustment block and the slide groove, and the adjustment block is connected to an end of the transverse block away from the transverse groove; the adjustment block and the elliptical block are against each other.

3. The air purification device for building ventilation according to claim 2, characterized in that: An annular groove is arranged at the notch of the transverse groove, and the width of the annular groove gradually decreases from one end of the notch of the transverse groove to the other end of the transverse groove.

4. The air purification device for building ventilation according to claim 3, characterized in that: The cylindrical block is rotatably connected to the fixed plate, and the end of the transverse block away from the transverse groove is rotatably connected to the adjustment block. The transverse block can rotate on the filter screen, and a gear is fixed to the cylindrical block. A vertical groove is provided on the top of the purification box, and a rack is slidably connected in the vertical groove, and the rack is meshed with the gear. It also includes a lifting mechanism that drives the rack to reciprocate vertically as the rotating shaft rotates.

5. The air purification device for building ventilation according to claim 4, characterized in that: The lifting mechanism includes a cylindrical cam coaxially connected to the rotating shaft and a lifting block fixed to the rack. The cylindrical cam is provided with a curved groove, in which an auxiliary block is slidably connected. The auxiliary block is fixed to the lifting block, and the lifting block is slidably connected to the vertical groove.

6. The air purification device for building ventilation according to claim 5, characterized in that: An inner chamber is arranged in the regulating block, and a plurality of side holes are arranged on the regulating block. The side holes are communicated with the inner chamber and are arranged toward the filter screen. The regulating block also includes a water supply mechanism for introducing clean water into the inner chamber as the rack moves vertically back and forth.

7. The air purification device for building ventilation according to claim 6, characterized in that: The water supply mechanism includes a bottom chamber opened inside the purification box and a guide groove opened at the bottom of the purification box. A piston cylinder and a water tank are arranged in the bottom chamber, and a piston block is slidably connected in the piston cylinder. An inlet pipe and an outlet pipe are connected in the piston cylinder, the inlet pipe is connected to the water tank, and both sides of the outlet pipe are connected to diverter pipes, the diverter pipe is fixedly connected to the regulating block, and the diverter pipe is connected to the inner chamber. The guide groove is connected to the bottom chamber, the rack is slidably connected to the guide groove, and the rack is fixedly connected to the piston block.

8. The air purification device for building ventilation according to claim 7, characterized in that: Wall grooves are provided on both sides of the purification box, and the two wall grooves are located between the two filter screens; a push block is slidably connected in the wall groove, a second spring is provided between the push block and the wall groove, the push block is against the bottom of the purification box, and an inclined surface is provided on the push block; recovery grooves are provided on both sides of the bottom of the purification box, and the two recovery grooves are located between the two filter screens, and the inclined surface is arranged in the direction of the recovery groove; a discharge port is provided on the purification box, the discharge port is communicated with the recovery groove, and a sealing block is detachably connected to the discharge port; and a power mechanism is also included to adjust the distance between the two push blocks as the rack moves back and forth vertically.

9. The air purification device for building ventilation according to claim 8, characterized in that: The power mechanism comprises wedge blocks fixedly connected to both sides of the rack and wedge surfaces arranged on the push block, wherein the wedge surfaces are located on the movement track of the wedge blocks.

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