Convenient ventilation device for engineering construction

Abstract

The invention discloses a convenient ventilation device for engineering construction, and relates to the technical field of ventilation devices.The convenient ventilation device for engineering construction comprises a ventilation box, a fixing frame is fixedly connected to the left side of the ventilation box, a fan is fixedly connected to the left side of the fixing frame, and a plurality of air inlet holes are formed in the outer side of the fixing frame; a filter plate is fixedly connected to the inner side of the ventilation box, a cleaning unit is arranged on the inner side of the ventilation box, and a motor and a handle are fixedly connected to the upper side of the ventilation box. According to the convenient ventilation device for engineering construction, by arranging the filter plate, the ventilation box, the draught fan and the ventilation pipe, external airflow is conveniently filtered, airflow enters a room, through a guide plate, a guide block lifting plate, a rotating rod, a rotating cylinder, a moving block, a brush, a swing frame, a gear and a toothed plate, the brush is conveniently controlled to move up and down, and the brush is controlled to swing repeatedly; the dust cleaning effect on the filter plate is improved, and ventilation smoothness is conveniently kept.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation devices, and in particular to a convenient ventilation device for engineering construction. Background Art

[0002] Building ventilation engineering is a ventilation technology that exhausts polluted indoor air to the outside and transports fresh outdoor air to the indoor. During construction, ventilation devices are needed to bring external air into the construction site to facilitate indoor air circulation.

[0003] After searching, the Chinese patent with application number "CN202210171237.0" is specifically an environmentally friendly ventilation device for construction projects and its use method. A mounting plate is connected to the bottom of the mounting seat, and the side end of the mounting plate is connected to a cleaning brush. The rear end of the outer shell draws the gas into the interior through a fan, and the gas is filtered by the filter plate and then transported to the ventilation component by the gas supply elbow, thereby effectively filtering the air with impurities and dust in the construction site, improving the dust collection effect, and increasing the air quality. The filtered impurities fall into the collection drawer and are collected and processed by the collection drawer, thereby improving the dust treatment efficiency and the environmental protection efficiency. The cleaning cylinder drives the mounting seat to press down, and the scraper and the cleaning brush fit the surface of the filter plate. When pressing down, the dust on the surface of the filter plate is cleaned to prevent the filter plate from being blocked.

[0004] During ventilation, a fan is used to bring external air into the room. During the ventilation process, dust in the airflow is filtered through a filter plate. After filtering, a scraper and a brush are used to clean the dust. Since the incoming airflow contains moisture, the dust on the filter plate is easy to clump and adhere to the filter net. Direct cleaning with only a scraper and a brush makes it difficult to clean the highly adherent dust, resulting in poor cleaning effect, which causes the airflow to be blocked and affects the ventilation effect. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a convenient ventilation device for engineering construction, which solves the problem that the filter plate used during ventilation filters dust and the dust cleaning effect is poor.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A convenient ventilation device for engineering construction, comprising a ventilation box, a fixed frame is fixedly connected to the left side of the ventilation box, a fan is fixedly connected to the left side of the fixed frame, a plurality of air inlet holes are opened on the outer side of the fixed frame, a filter plate is fixedly connected to the inner side of the ventilation box, a cleaning unit is arranged on the inner side of the ventilation box, a motor and a handle are fixedly connected to the upper side of the ventilation box, a ventilation pipe is fixedly connected to the right side of the ventilation box, and a collection box is arranged on the lower side of the ventilation box;

[0008] The cleaning unit includes a guide plate, which is fixedly connected to the front and rear sides of the ventilation box, the outer sides of the guide plates on the front and rear sides are slidably connected with guide blocks, the outer sides of the guide blocks on the front and rear sides are fixedly connected with lifting plates, the lower side of the lifting plate is fixedly connected with a bottom plate, the outer sides of the lifting plates on the front and rear sides are rotatably connected with rotating rods, a rotating drum is fixedly connected between the rotating rods on the front and rear sides, a moving block is arranged on the inner side of the rotating drum, a plurality of brushes are fixedly connected to the right side of the moving block, a reciprocating rod is fixedly connected to the left side of the moving block, the outer end of the reciprocating rod is fixedly connected with a fixed plate, and a spring is fixedly connected between the fixed plate and the rotating drum.

[0009] The outer end of the rotary table is fixedly connected with the rotary shaft, and the outer end of the rotary shaft is fixedly connected with the rotary disk 1, and the toothed plate is fixedly connected between the upper and lower inner walls of the ventilation box. The outer side of the rotary disk 1 is fixedly connected with a control block, and the outer side of the control block is fixedly connected with a sliding rod 1, and the outer side of the sliding rod 1 is slidably connected with a swing frame. The left end of the swing frame is rotatably connected to the lifting plate. The outer side of the lifting plate is fixedly connected with a connecting rod, and the outer end of the connecting rod is fixedly connected with a stable plate, and the outer side of the stable plate is rotatably connected with a control rod. One end of the control rod is fixedly connected with a swing block, and the outer side of the swing block is fixedly connected with a sliding rod 2, and the other end of the control rod is fixedly connected with the rotating plate, and the outer side of the rotating plate is rotatably connected with a linkage plate, and the outer side of the rotating rod is fixedly connected with a rotary disk 2, and the outer side of the rotary disk 2 is fixedly connected with a connecting block, and the connecting block is rotatably connected with the linkage plate.

[0010] Preferably, the sliding rod 2 is slidably connected to the swing frame, the toothed plate is meshingly connected to the gear, and the linkage plate is arranged in an inclined structure.

[0011] Preferably, a lifting block is fixedly connected to the right side of the guide block, two mounting blocks are fixedly connected to the right side of the guide plate, a screw is rotatably connected between the two mounting blocks, the screw is threadedly connected to the lifting block, a motor is fixedly connected to the upper side of the ventilation box, and the output end of the motor is fixedly connected to the upper end of the screw.

[0012] Preferably, a rotating block 2 is fixedly connected to the upper side of the base plate, an outer side of the rotating block 2 is rotatably connected to an inclined plate, a rotating block 1 is fixedly connected to the outer side of the fixed plate, the rotating block 1 is rotatably connected to the inclined plate, and the reciprocating rod is slidably connected to the rotating drum.

[0013] Preferably, two bottom blocks are fixedly connected to the lower side of the bottom plate, a fixed pipe is fixedly connected between the two bottom blocks, a plurality of nozzles are fixedly connected to the side of the fixed pipe close to the filter plate, one end of the rotating shaft passes through the outer side of the lifting plate and is fixedly connected to a control disk, a contact rod is fixedly connected to the outer side of the control disk, a moving frame is provided on the outer side of the contact rod, a reciprocating plate is fixedly connected to the outer side of the moving frame, a limiting block and an air box are fixedly connected to the outer side of the lifting plate, a piston plate is fixedly connected to the outer side of the reciprocating plate and located on the inner side of the air box, a delivery pipe is fixedly connected between the air box and the fixed pipe, and an intake hose is fixedly connected to the upper side of the air box.

[0014] Preferably, one-way valves are provided on the outer sides of the air intake hose and the delivery pipe, and the upper end of the air intake hose passes through the upper side of the ventilation box.

[0015] Preferably, the piston plate is slidably connected to the air box, and the reciprocating plate is slidably connected to the limit block.

[0016] Beneficial Effects

[0017] The present invention provides a convenient ventilation device for engineering construction. Compared with the prior art, it has the following advantages

[0018] Beneficial effects:

[0019] (1) The convenient ventilation device used in the construction of this project is equipped with a filter plate, a ventilation box, a fan and a ventilation pipe, which is convenient for filtering the external airflow and flowing the air into the room. The guide plate, the guide block lifting plate, the rotating rod, the rotating drum, the moving block, the brush, the swing frame, the gear and the tooth plate are used to conveniently control the up and down movement of the brush and control the repeated swing of the brush, thereby increasing the dust cleaning effect on the filter plate and facilitating the maintenance of the smoothness of ventilation.

[0020] (2) The project uses a convenient ventilation device with a moving block, a reciprocating rod, a fixed plate, a spring, an inclined plate and a bottom plate. When the brush cleans the dust on the surface of the filter plate, the brush is controlled to vibrate repeatedly left and right, which is convenient for cleaning the agglomerated dust on the filter plate and enhances the cleaning effect.

[0021] (3) The project construction uses a convenient ventilation device, which is equipped with a base plate, a nozzle, an air box, a delivery pipe, an air intake hose, a piston plate, a reciprocating plate and a control panel. When cleaning dust, it is convenient to control multiple nozzles to spray air to remove dust on the surface of the filter plate, thereby facilitating dust cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the overall three-dimensional structure diagram of the present invention;

[0023] Figure 2 It is an internal three-dimensional structure diagram of the present invention;

[0024] Figure 3 It is a three-dimensional structural diagram of the cleaning unit in the present invention;

[0025] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0026] Figure 5 It is a partial three-dimensional structural diagram of the cleaning unit in the present invention;

[0027] Figure 6 for Figure 5 The enlarged view of point B in the middle;

[0028] Figure 7 It is a three-dimensional structural diagram of the air intake hose in the present invention;

[0029] Figure 8 for Figure 7 Enlarged view of point C in the middle.

[0030] In the figure: 1, ventilation box; 2, collecting box; 3, fixing frame; 4, fan; 5, ventilation pipe; 6, handle; 7, motor; 8, cleaning unit; 9, filter plate; 10, air inlet; 801, guide plate; 802, tooth plate; 803, guide block; 804, lifting plate; 805, rotating rod; 806, rotating drum; 807, moving block; 808, brush; 809, reciprocating rod; 810, fixing plate; 811, spring; 812, bottom plate; 813, rotating block 1; 814, inclined plate; 815, rotating block 2; 816, lifting block; 817, screw; 818, mounting block; 819, rotating shaft; 8 20. Gear; 821. Turntable 1; 822. Control block; 823. Slide bar 1; 824. Swing frame; 825. Slide bar 2; 826. Swing block; 827. Connecting rod; 828. Stabilizing plate; 829. Control rod; 830. Turntable; 831. Linkage plate; 832. Turntable 2; 833. Connecting block; 834. Bottom block; 835. Fixed pipe; 836. Nozzle; 837. Control panel; 838. Contact rod; 839. Moving frame; 840. Reciprocating plate; 841. Limiting block; 842. Piston plate; 843. Air box; 844. Delivery pipe; 845. Intake hose. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0032] Embodiment 1

[0033] See also Figure 1- Figure 6 The present invention provides a technical solution: a convenient ventilation device for engineering construction, comprising a ventilation box 1, a fixed frame 3 is fixedly connected to the left side of the ventilation box 1, a fan 4 is fixedly connected to the left side of the fixed frame 3, a plurality of air inlet holes 10 are opened on the outer side of the fixed frame 3, a filter plate 9 is fixedly connected to the inner side of the ventilation box 1, a cleaning unit 8 is arranged on the inner side of the ventilation box 1, a motor 7 and a handle 6 are fixedly connected to the upper side of the ventilation box 1, a ventilation pipe 5 is fixedly connected to the right side of the ventilation box 1, and a collecting box 2 is arranged on the lower side of the ventilation box 1, wherein the collecting box 2 is arranged for convenient collection of dust on the surface of the filter plate 9. When ventilation is performed, the fan 4 is started to make the external air flow pass through the air inlet hole 10, so that the air flow enters the ventilation box 1, and the dust in the air flow is filtered by the filter plate 9, and then the air flow is discharged indoors through the ventilation pipe 5, so as to facilitate the smoothness of the construction site.

[0034] The cleaning unit 8 includes a guide plate 801, which is fixedly connected to the front and rear sides of the ventilation box 1. The outer sides of the front and rear guide plates 801 are slidably connected with guide blocks 803. The outer sides of the front and rear guide blocks 803 are fixedly connected with lifting plates 804. The lower side of the lifting plate 804 is fixedly connected with a bottom plate 812. The outer sides of the front and rear lifting plates 804 are rotatably connected with rotating rods 805. A rotating drum 806 is fixedly connected between the front and rear rotating rods 805. A moving block 807 is arranged on the inner side of the rotating drum 806. A plurality of brushes 808 are fixedly connected to the right side of the moving block 807. A reciprocating rod 809 is fixedly connected to the left side of the moving block 807. The outer end of the reciprocating rod 809 is fixedly connected with a fixed plate 810. The fixed plate 810 and the rotating drum 806 are fixedly connected. A spring 811 is connected, a lifting block 816 is fixedly connected to the right side of the guide block 803, two mounting blocks 818 are fixedly connected to the right side of the guide plate 801, a screw 817 is rotatably connected between the two mounting blocks 818, the screw 817 is threadedly connected to the lifting block 816, a motor 7 is fixedly connected to the upper side of the ventilation box 1, the output end of the motor 7 is fixedly connected to the upper end of the screw 817, a rotating shaft 819 is rotatably connected to the outer side of the left end of the lifting plate 804, a gear 820 is fixedly connected to the outer side of the rotating shaft 819, a turntable 821 is fixedly connected to the outer end of the rotating shaft 819, a toothed plate 802 is fixedly connected between the upper and lower inner walls of the ventilation box 1, a control block 822 is fixedly connected to the outer side of the turntable 821, and a slide bar 822 is fixedly connected to the outer side of the control block 822 823, the outer side of the slide bar 1 823 is slidably connected with a swing frame 824, the left end of the swing frame 824 is rotatably connected to the lifting plate 804, the outer side of the lifting plate 804 is fixedly connected with a connecting rod 827, the outer end of the connecting rod 827 is fixedly connected with a stabilizing plate 828, the outer side of the stabilizing plate 828 is rotatably connected with a control rod 829, one end of the control rod 829 is fixedly connected with a swing block 826, the outer side of the swing block 826 is fixedly connected with a slide bar 2 825, the other end of the control rod 829 is fixedly connected with a rotating plate 830, the outer side of the rotating plate 830 is rotatably connected with a linkage plate 831, the outer side of the rotating rod 805 is fixedly connected with a turntable 2 832, the outer side of the turntable 2 832 is fixedly connected with a connecting block 833, the connecting block 833 and the linkage plate 831 are rotatably connected The sliding rod 825 is slidably connected with the swing frame 824, the tooth plate 802 is meshed with the gear 820, and the linkage plate 831 is set as an inclined structure. After the filter plate 9 has been used for a period of time, the motor 7 is started, the motor 7 drives the screw 817 to rotate, the screw 817 drives the lifting block 816 to descend, the lifting block 816 drives the guide block 803 to descend, the guide block 803 drives the lifting plate 804 to descend, the lifting plate 804 drives the rotating rod 805 to descend, the rotating rod 805 drives the rotating drum 806 to descend, the rotating drum 806 drives the moving block 807 to descend, and the moving block 807 drives the brush 808 to descend, so that the brush 808 performs preliminary cleaning of the dust on the surface of the filter plate 9. During the cleaning process, the lifting plate 804 drives the gear 820 on the rotating shaft 819 to descend.Since the gear 820 is meshed with the toothed plate 802, the gear 820 rotates, the gear 820 rotates the shaft 819, the shaft 819 drives the turntable 821 to rotate, the turntable 821 drives the control block 822 to rotate, the control block 822 drives the slide bar 823 to rotate, the slide bar 823 drives the swing frame 824 to swing, the swing frame 824 drives the swing block 826 on the slide bar 825 to swing repeatedly, the swing block 826 drives the control rod 829 to rotate, and the control rod 829 drives the control rod 829 to rotate. The control rod 829 swings forward and backward, the control rod 829 drives the rotating plate 830 to swing, the rotating plate 830 drives the linkage plate 831 to rotate, the linkage plate 831 drives the second turntable 832 on the connecting block 833 to swing, the second turntable 832 drives the rotating rod 805 to swing, the rotating rod 805 drives the rotating drum 806 to swing, the rotating drum 806 drives the brush 808 to swing, and the brush 808 increases the dust cleaning effect of the filter plate 9 surface by the brush 808, and avoids the difficulty of cleaning the agglomerated dust, which affects the smoothness of ventilation.

[0035] A rotating block 815 is fixedly connected to the upper side of the bottom plate 812, and an inclined plate 814 is rotatably connected to the outer side of the rotating block 815. A rotating block 813 is fixedly connected to the outer side of the fixed plate 810. The rotating block 813 is rotatably connected to the inclined plate 814. The reciprocating rod 809 is slidably connected to the rotating cylinder 806. When the rotating cylinder 806 swings, the rotating cylinder 806 drives the fixed plate 810 on the reciprocating rod 809 to swing. Under the action of the inclined plate 814, the fixed plate 810 moves repeatedly left and right, and the fixed plate 810 drives the reciprocating rod 809 to move. The reciprocating rod 809 drives the brush 808 on the moving block 807 to vibrate repeatedly left and right, thereby increasing the cleaning effect of the brush 808.

[0036] Embodiment 2

[0037] like Figure 7 , Figure 8As shown, two bottom blocks 834 are fixedly connected to the lower side of the bottom plate 812, a fixed pipe 835 is fixedly connected between the two bottom blocks 834, a plurality of nozzles 836 are fixedly connected to the side of the fixed pipe 835 close to the filter plate 9, one end of the rotating shaft 819 passes through the outer side of the lifting plate 804 and is fixedly connected to a control disk 837, a contact rod 838 is fixedly connected to the outer side of the control disk 837, a moving frame 839 is provided on the outer side of the contact rod 838, a reciprocating plate 840 is fixedly connected to the outer side of the moving frame 839, a limiting block 841 and an air box 843 are fixedly connected to the outer side of the lifting plate 804, a piston plate 842 is fixedly connected to the outer side of the reciprocating plate 840 and located on the inner side of the air box 843, a delivery pipe 844 is fixedly connected between the air box 843 and the fixed pipe 835, an air intake hose 845 is fixedly connected to the upper side of the air box 843, and the air intake hose 845 is connected to the delivery pipe 84 4 is provided with a one-way valve on the outside, the upper end of the air intake hose 845 passes through the upper side of the ventilation box 1, the piston plate 842 is slidably connected with the air box 843, and the reciprocating plate 840 is slidably connected with the limit block 841. When cleaning dust, the rotating shaft 819 drives the control disk 837 to rotate, the control disk 837 drives the contact rod 838 to rotate, the contact rod 838 drives the moving frame 839 to move repeatedly left and right, the moving frame 839 drives the reciprocating plate 840 to move, and the reciprocating plate 840 drives the piston plate 842 to move left and right. When the piston plate 842 moves to the left, under the action of the one-way valve of the air intake hose 845, the external air flow enters the air box 843. When the piston plate 842 moves to the right, the air flow is delivered to the fixed pipe 835 through the one-way valve on the delivery pipe 844, and then the multiple nozzles 836 spray the air flow on the filter plate 9, which is convenient for the auxiliary brush 808 to clean the dust and enhance the dust cleaning effect.

[0038] Working principle: When in use, the staff first places the device outdoors, with the ventilation pipe 5 located in the construction room, starts the fan 4 to allow the external air flow to enter the room and filter the dust through the filter plate 9. After the filtering is completed, the motor 7 is started to control the screw 817 to rotate. Under the action of the lifting block 816, the lifting plate 804, the rotating rod 805 and the rotating drum 806, the brush 808 on the moving block 807 is controlled to descend, so that the brush 808 cleans the dust on the surface of the filter plate 9. At the same time, the lifting plate 804 drives the gear 820 to descend. Under the action of the tooth plate 802, the gear 820 rotates between the turntable 821, the control block 822, the slide bar 823, and the swing plate 806. Under the action of frame 824, slide bar 825, swing block 826, control rod 829, rotating plate 830, linkage plate 831 and connecting block 833, the rotating rod 805 swings repeatedly, and the rotating rod 805 drives the brush 808 to swing, thereby increasing the cleaning effect. Under the action of inclined plate 814, the brush 808 vibrates repeatedly left and right, thereby facilitating the cleaning of agglomerated dust. At the same time, the rotating shaft 819 drives the control disk 837 to rotate, and the contact rod 838, moving frame 839, reciprocating plate 840, air box 843, piston plate 842, delivery pipe 844 and air intake hose 845 facilitate the dust on the surface of the filter plate 9 sprayed by the airflow ejected by the nozzle 836 to be blown off, thereby facilitating cleaning.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants 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.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A convenient ventilation device for engineering construction, comprising a ventilation box (1), a fixed frame (3) is fixedly connected to the left side of the ventilation box (1), a fan (4) is fixedly connected to the left side of the fixed frame (3), a plurality of air inlet holes (10) are opened on the outer side of the fixed frame (3), and a filter plate (9) is fixedly connected to the inner side of the ventilation box (1), characterized in that: A cleaning unit (8) is arranged on the inner side of the ventilation box (1), a motor (7) and a handle (6) are fixedly connected to the upper side of the ventilation box (1), a ventilation pipe (5) is fixedly connected to the right side of the ventilation box (1), and a collection box (2) is arranged on the lower side of the ventilation box (1).

2. A convenient ventilation device for engineering construction according to claim 1, characterized in that: The cleaning unit (8) comprises a guide plate (801), wherein the guide plate (801) is fixedly connected to the front and rear sides of the ventilation box (1), the outer sides of the guide plates (801) on the front and rear sides are slidably connected to guide blocks (803), the outer sides of the guide blocks (803) on the front and rear sides are fixedly connected to lifting plates (804), the lower side of the lifting plates (804) is fixedly connected to a bottom plate (812), the outer sides of the lifting plates (804) on the front and rear sides are rotatably connected to rotating rods (805), a rotating drum (806) is fixedly connected between the rotating rods (805) on the front and rear sides, and the inner side of the rotating drum (806) is fixedly connected to the outer sides of the lifting plates (804). A moving block (807) is provided on the side, a plurality of brushes (808) are fixedly connected to the right side of the moving block (807), a reciprocating rod (809) is fixedly connected to the left side of the moving block (807), a fixed plate (810) is fixedly connected to the outer end of the reciprocating rod (809), a spring (811) is fixedly connected between the fixed plate (810) and the rotating drum (806), a rotating shaft (819) is rotatably connected to the outer side of the left end of the lifting plate (804), a gear (820) is fixedly connected to the outer side of the rotating shaft (819), and a rotating disk (806) is fixedly connected to the outer end of the rotating shaft (819). 21), a tooth plate (802) is fixedly connected between the upper and lower inner walls of the ventilation box (1), a control block (822) is fixedly connected to the outer side of the turntable (821), a slide bar (823) is fixedly connected to the outer side of the control block (822), a swing frame (824) is slidably connected to the outer side of the slide bar (823), the left end of the swing frame (824) is rotatably connected to the lifting plate (804), a connecting rod (827) is fixedly connected to the outer side of the lifting plate (804), the outer end of the connecting rod (827) is fixedly connected to a stabilizing plate (828), and the stabilizing plate (82 8) is rotatably connected to the outer side of a control rod (829), one end of the control rod (829) is fixedly connected to a swing block (826), the outer side of the swing block (826) is fixedly connected to a second slide bar (825), the other end of the control rod (829) is fixedly connected to a rotating plate (830), the outer side of the rotating plate (830) is rotatably connected to a linkage plate (831), the outer side of the rotating rod (805) is fixedly connected to a second rotating disk (832), the outer side of the second rotating disk (832) is fixedly connected to a connecting block (833), and the connecting block (833) is rotatably connected to the linkage plate (831).

3. A convenient ventilation device for engineering construction according to claim 2, characterized in that: The second sliding rod (825) is slidably connected to the swing frame (824), the toothed plate (802) is meshingly connected to the gear (820), and the linkage plate (831) is arranged in an inclined structure.

4. The convenient ventilation device for engineering construction according to claim 1, characterized in that: A lifting block (816) is fixedly connected to the right side of the guide block (803), two mounting blocks (818) are fixedly connected to the right side of the guide plate (801), a screw rod (817) is rotatably connected between the two mounting blocks (818), the screw rod (817) is threadedly connected to the lifting block (816), a motor (7) is fixedly connected to the upper side of the ventilation box (1), and the output end of the motor (7) is fixedly connected to the upper end of the screw rod (817).

5. The convenient ventilation device for engineering construction according to claim 1, characterized in that: The upper side of the bottom plate (812) is fixedly connected to a rotating block 2 (815), the outer side of the rotating block 2 (815) is rotatably connected to an inclined plate (814), the outer side of the fixed plate (810) is fixedly connected to a rotating block 1 (813), the rotating block 1 (813) is rotatably connected to the inclined plate (814), and the reciprocating rod (809) is slidably connected to the rotating drum (806).

6. The convenient ventilation device for engineering construction according to claim 1, characterized in that: Two bottom blocks (834) are fixedly connected to the lower side of the bottom plate (812), a fixed pipe (835) is fixedly connected between the two bottom blocks (834), a plurality of nozzles (836) are fixedly connected to the side of the fixed pipe (835) close to the filter plate (9), one end of the rotating shaft (819) passes through the outer side of the lifting plate (804) and is fixedly connected to a control disk (837), a contact rod (838) is fixedly connected to the outer side of the control disk (837), and a contact rod (838) is provided on the outer side of the contact rod (838). A movable frame (839), the outer side of the movable frame (839) is fixedly connected to a reciprocating plate (840), the outer side of the lifting plate (804) is fixedly connected to a limit block (841) and an air box (843), the outer side of the reciprocating plate (840) is located on the inner side of the air box (843) and is fixedly connected to a piston plate (842), a delivery pipe (844) is fixedly connected between the air box (843) and the fixed pipe (835), and an intake hose (845) is fixedly connected to the upper side of the air box (843).

7. A convenient ventilation device for engineering construction according to claim 6, characterized in that: One-way valves are provided on the outsides of the air intake hose (845) and the delivery pipe (844), and the upper end of the air intake hose (845) passes through the upper side of the ventilation box (1).

8. The convenient ventilation device for engineering construction according to claim 6, characterized in that: The piston plate (842) is slidably connected to the air box (843), and the reciprocating plate (840) is slidably connected to the limit block (841).

Images