CN111926943B

CN111926943B - Assembled building externally-hung wallboard drainage structures

Info

Publication number: CN111926943B
Application number: CN202010814194.4A
Authority: CN
Inventors: 唐立名; 虞锋; 吴毅; 邵德鹏
Original assignee: Jiangsu Suyang Construction Co ltd
Current assignee: Jiangsu Xinsuyang Construction Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-05-25
Anticipated expiration: 2040-08-13
Also published as: CN111926943A

Abstract

The utility model relates to an assembly type structure external wallboard drainage structures, it includes the wall body, the wall body includes diaphragm and longitudinal plate, the inside cavity that is equipped with of wall body, cavity sliding connection has the drain bar, the wash port has been seted up to the wall body, longitudinal plate outer wall fixedly connected with motor, longitudinal plate inner wall fixedly connected with disc, motor output shaft has the connecting rod, the connecting rod articulates there is slider one, the disc rotates and is connected with the ring, the ring has set firmly the bar shaped plate, bar shaped groove one has been seted up to the bar shaped plate, slider one sliding connection is in bar shaped groove one, slider one articulates there is slider two, bar shaped groove two has been seted up to the drain bar, two sliding connection of. The motor drives the connecting rod and rotates, makes slider one slide in bar groove one, and then the circle encircles the disc and rotates for two rotations of slider, and then make the drain bar slide from top to bottom in the cavity, the drain bar reciprocates and extrudees the ponding of tip under the cavity for ponding flows to the wall body outside from the drain hole, can be fast effectual with the ponding discharge in the cavity.

Description

Assembled building externally-hung wallboard drainage structures

Technical Field

The application relates to the field of constructional engineering, in particular to a drainage structure of an external wallboard of an assembly type building.

Background

The prefabricated building refers to a structure body (such as a wallboard, a column, a beam, a floor slab, a stair and the like) of a building which is produced and prefabricated in a factory after being disassembled according to a certain specification, and then is transported to a site for assembly. The assembled building external wall panel is used as an external enclosure structure part, the connection of the horizontal and vertical directions of the assembly part is generally processed by gluing, and most of the internal parts of the external wall panel are provided with cavities in consideration of material saving, sound insulation and heat insulation.

During production, the external wall board is prefabricated in a factory after being disassembled according to certain specifications, then is transported to a site for assembly, and the assembly position is treated by gluing. When the external wall board is assembled, a large number of assembling joints are left, rainwater can infiltrate between the external wall board and the inner wall through the joints, and a cavity is reserved in the external wall board when the external wall board is generally designed, so that rainwater and condensed water can be deposited in the cavity of the external wall board frequently, and the use safety of the external wall board and even the whole building is seriously influenced.

The existing Chinese patent with the publication number of CN106013474B discloses an assembly type drainage structure for building external wall boards, which comprises a drain pipe which is arranged at the lowest part of the vertical splicing seams of the external wall boards and is horizontally placed, wherein the drain pipe comprises a pipe seat which forms a water collecting tank with the vertical splicing seams of the external wall boards and a pipe column which protrudes towards the axial direction of the pipe seat and is communicated with the pipe seat, the pipe column is exposed out of the external wall boards, a check valve which is communicated with the pipe column in a one-way mode from the pipe seat is arranged in the pipe column, the check valve comprises a pipe tongue which is arranged in the pipe column and used for opening and closing the check valve, and pipe teeth which are arranged around the inner wall of the pipe column and used.

Aiming at the related technologies, the inventor thinks that a certain height difference exists between a pipe column and a pipe seat in the drainage structure, but when the rainfall time is long and the surface runoff is large, and the accumulated rainwater amount is large, the structure has poor use effect and cannot thoroughly discharge the water in the cavity of the external wall panel, the drainage structure is in a closed state for a long time, the external wall panel is easy to be in a humid environment for a long time, the problem of accumulated water in the cavity of the wall panel cannot be quickly and effectively solved, and the wall panel can mildew and crack under long-time rainwater soaking, so that the use performance of the external wall panel of the assembly type building is adversely affected.

Disclosure of Invention

In order to discharge the ponding in the externally-hung wallboard cavity fast effectively, this application provides an assembly type structure externally-hung wallboard drainage structures.

In a first aspect, the application provides an assembly type building external wall panel drainage structure, adopts following technical scheme:

the utility model provides an assembly type structure external wallboard drainage structures, which comprises a wall body, the wall body includes the diaphragm that is parallel to each other and the longitudinal plate that is parallel to each other, the inside cavity that is equipped with of wall body, cavity sliding connection has the drain bar with cavity looks adaptation, a plurality of drain holes have been seted up to the drain bar, a plurality of wash ports have been seted up to the tip under the wall body, longitudinal plate outer wall fixedly connected with motor, longitudinal plate inner wall fixedly connected with disc, motor output shaft passes disc fixedly connected with connecting rod, the one end that motor output shaft was kept away from to the connecting rod articulates there is slider one, the outer anchor ring of disc rotates and is connected with the ring, the ring has set firmly the bar shaped plate, bar shaped plate has seted up bar groove one along length direction, slider one sliding connection is in bar shaped groove one, slider one end of keeping away from the connecting rod.

By adopting the technical scheme, when the external wall panel is used and the rainfall is large, rainwater permeates into the cavity and flows downwards to the drainage plate along the cavity, flows to the lower end part of the cavity from the drainage through hole of the drainage plate and is drained from the drainage hole; when tip produced ponding under the cavity, the motor drives the connecting rod and rotates, the connecting rod drives slider one and slides in bar groove one, and then it rotates around the disc to drive the ring, slider one is articulated with slider two, and then make slider two rotate, two sliding connection of slider are in the bar groove two of drain bar, and then make the drain bar slide from top to bottom in the cavity, the drain bar reciprocates the in-process, extrude the ponding of tip under the cavity, it is outside to flow the wall body from the drain hole for ponding, can be fast effectual with the ponding discharge in the cavity.

Preferably, four end angles of the lower end surface of the drainage plate are fixedly connected with slide rods, the transverse plate is fixedly connected with a limiting ring close to the slide rods, and the slide rods are connected in the limiting ring in a sliding manner.

Through adopting above-mentioned technical scheme, the drain bar reciprocates the in-process, and the slide bar of drain bar slides from top to bottom in spacing ring, carries on spacingly to the drain bar for the drain bar only moves in vertical direction, is favorable to improving the stability of drain bar at the in-process that reciprocates, guarantees the extrusion discharge effect of drain bar with ponding in the cavity.

Preferably, a one-way valve is fixedly arranged in the liquid guide through hole, the whole drainage plate is conical, and the middle height of the drainage plate is smaller than the height of the drainage plate close to the longitudinal plate.

By adopting the technical scheme, the one-way valve is arranged, so that rainwater can only flow to the lower end part of the cavity, and the drainage effect is favorably improved; the drain bar is the toper for the rainwater that flows on the drain bar flows to the drain bar middle part, flows from leading the liquid through-hole again, is favorable to improving drainage effect.

Preferably, the first strip-shaped groove and the second strip-shaped groove are both provided with a limiting groove along the length direction, the first sliding block and the second sliding block are fixedly connected with raised lines, and the raised lines are in sliding connection with the limiting grooves.

Through adopting above-mentioned technical scheme, the sand grip of slider one slides in the spacing inslot of bar groove one, and the sand grip of slider two slides in the spacing inslot of bar groove two, through setting up sand grip and spacing groove, is convenient for carry on spacingly to slider one and slider two, prevents that slider one and slider two from taking place to break away from the deflection at the rotation in-process, is favorable to improving the stability of slider one and slider two when the rotation.

Preferably, an inclined water guide plate is fixedly arranged at the lower end part of the cavity, and the lower end of the water guide plate is flush with the lowest point of the drain hole.

By adopting the technical scheme, the water guide plate is obliquely arranged, so that accumulated water at the lower end of the air can flow to one end of the water drain hole conveniently, and the discharge of the accumulated water at the lower end of the cavity is accelerated.

Preferably, two tip of drain through-hole all set firmly the filter screen, terminal surface fixedly connected with a plurality of risers under the drain bar, riser fixedly connected with a plurality of brushes.

By adopting the technical scheme, the filter screen is convenient for filtering sundries in rainwater, prevents the sundries from blocking the liquid guide through hole and facilitates the rainwater to flow to the lower end part of the cavity; when accumulated water in the cavity is completely discharged, the hairbrushes on the vertical plates brush the inner wall of the wall body in the up-and-down moving process of the drainage plate, so that sundries adhered to the wall body can be conveniently scraped off, and the influence of the sundries on the up-and-down movement of the drainage plate is avoided.

Preferably, the drainage plate is provided with a plurality of air guide holes penetrating through the drainage plate, the lower end face of the drainage plate, close to the air guide holes, is connected with a rubber sheet matched with the air guide holes, the rubber sheet comprises a left sheet and a right sheet, and the right sheet is fixedly connected with the half sides of the air guide holes.

Through adopting above-mentioned technical scheme, behind the ponding discharge in the cavity, when the drain bar rebound, under the air current impetus effect, the left piece is opened, the circulation of air of drain bar top and below of being convenient for is favorable to the whole drying of wall body.

Preferably, the outer wall of the wall body is fixedly connected with a plurality of reinforcing ribs, the position, close to the drainage hole, of the wall body is connected with a plunger, and the outer wall of the longitudinal plate is fixedly connected with a waterproof cover wrapping the outside of the motor.

By adopting the technical scheme, the reinforcing ribs are arranged, so that the overall stability of the wall body is favorably enhanced; arranging a plunger, wherein when the operator does not rain, the operator covers the drain hole with the plunger to prevent insects and mice from entering the wall body through the drain hole; when raining, an operator pulls out the plunger from the drain hole, so that rainwater in the cavity can be conveniently drained; the waterproof cover is arranged, so that the waterproof performance of the motor is improved, and the normal operation of the motor is convenient to guarantee.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the external wall board is used, when the rainfall is large, rainwater permeates into the cavity and flows down to the drainage plate along the cavity, flows to the lower end part of the cavity from the drainage through hole of the drainage plate and is discharged from the drainage hole; when water is accumulated at the lower end part of the cavity, the motor drives the connecting rod to rotate, the connecting rod drives the first sliding block to slide in the first strip-shaped groove and further drives the circular ring to rotate around the circular disc, the first sliding block is hinged with the second sliding block so that the second sliding block rotates, and the second sliding block is connected in the second strip-shaped groove of the drainage plate in a sliding mode so that the drainage plate can slide up and down in the cavity;

2. in the up-and-down moving process of the drainage plate, the sliding rod of the drainage plate slides up and down in the limiting ring to limit the drainage plate, so that the drainage plate only moves in the vertical direction, the stability of the drainage plate in the up-and-down moving process is improved, and the extrusion and drainage effect of accumulated water in the cavity by the drainage plate is ensured;

3. after ponding discharge in the cavity, when the drain bar moved up, under the air current impetus effect, the left piece was opened, the circulation of air of drain bar top and below of being convenient for is favorable to the whole drying of wall body.

Drawings

Fig. 1 is a schematic view of the overall structure of the embodiment.

Fig. 2 is a schematic view of the internal structure of the cavity.

Fig. 3 is a schematic cross-sectional view of a drain board.

Figure 4 is a schematic view intended to highlight the operation of the motor-driven drain board.

Fig. 5 is an enlarged schematic view of a portion a in fig. 4.

Description of reference numerals: 1. a wall body; 2. a transverse plate; 3. a longitudinal plate; 4. a cavity; 5. a drain plate; 6. a liquid guiding through hole; 7. a drain hole; 8. a motor; 9. a disc; 10. a connecting rod; 11. a first sliding block; 12. a circular ring; 13. a strip plate; 14. a first strip-shaped groove; 15. a second sliding block; 16. a strip-shaped groove II; 17. a slide bar; 18. a limiting ring; 19. a one-way valve; 20. a limiting groove; 21. a convex strip; 22. a water guide plate; 23. a filter screen; 24. a vertical plate; 25. a brush; 26. an air vent; 27. a rubber sheet; 28. a left sheet; 29. a right sheet; 30. reinforcing ribs; 31. a plunger; 32. a water shield.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses assembled building externally-hung wallboard drainage structure.

Examples

Referring to fig. 1 and 2, an assembly type building external wall panel drainage structure comprises a wall body 1, wherein the wall body 1 comprises a transverse plate 2 and a longitudinal plate 3 which are parallel to each other, a cavity 4 is arranged inside the wall body 1, the cavity 4 is connected with a drainage plate 5 matched with the cavity 4 in a sliding manner, a plurality of drainage holes 7 are formed in the lower end part of the wall body 1, and when the external wall panel is in use, strong rainfall weather is met, the rainfall is large, rainwater easily permeates into the cavity 4 of the wall body 1 and flows downwards along the cavity 4 to flow onto the drainage plate 5, and then flows to the lower end part of the cavity 4 from the drainage plate 5 and is discharged from the drainage holes 7.

Referring to fig. 2 and 3, the drain plate 5 is provided with a plurality of liquid guiding through holes 6, and when rainwater flows onto the drain plate 5, the rainwater flows through the liquid guiding through holes 6 and flows towards the lower end of the cavity 4, so that the rainwater can flow rapidly. The outer wall of the longitudinal plate 3 is fixedly connected with a motor 8, the inner wall of the longitudinal plate 3 is fixedly connected with a disc 9, and an output shaft of the motor 8 penetrates through the disc 9 and is fixedly connected with a connecting rod 10.

Referring to fig. 4 and 5, the one end that 8 output shafts of motor were kept away from to connecting rod 10 articulates there is slider one 11, the outer anchor ring of disc 9 rotates and is connected with

ring

12, 12 fixedly connected with bar shaped plate 13 of ring, bar shaped plate 13 has seted up bar groove one 14 along length direction, 11 sliding connection of slider in bar groove one 14, the one end that connecting rod 10 was kept away from to slider one 11 articulates there is slider two 15, two 16 in bar groove have been seted up to the one end that drain bar 5 is close to disc 9, two 15 sliding connection of slider in bar groove two 16.

Referring to fig. 4 and 5, along with the continuous flow of rainwater, tip production ponding under cavity 4 (refer to fig. 2) easily, it rotates to drive connecting rod 10 by motor 8, connecting rod 10 drives slider 11 and slides in bar groove 14 of bar shaped plate 13, and then drive ring 12 and rotate around disc 9, the one end of slider 11 is articulated with slider two 15 again, and then make slider two 15 rotate, slider two 15 sliding connection is in bar groove two 16 of drain bar 5, and then make drain bar 5 slide from top to bottom in cavity 4 (refer to fig. 2), the drain bar 5 reciprocates the in-process, extrude the ponding of tip under cavity 4 (refer to fig. 2), it flows to wall body 1 (refer to fig. 2) outside to accelerate ponding from wash port 7, can be quick effectual with the ponding discharge in cavity 4 (refer to fig. 2).

Referring to fig. 4 and 5, the first strip-shaped groove 14 and the second strip-shaped groove 16 are both provided with a limiting groove 20 along the length direction, the first slider 11 and the second slider 15 are both fixedly connected with a protruding strip 21, and the protruding strip 21 is slidably connected with the limiting groove 20. Slider 11 and slider two 15 are at the rotation in-process, the sand grip 21 on the slider 11 slides in the spacing groove 20 of bar groove one 14, sand grip 21 on the slider two 15 slides in the spacing groove 20 of bar groove two 16, through setting up sand grip 21 and spacing groove 20, be convenient for carry on spacingly to slider 11 and slider two 15, prevent that slider 11 and slider two 15 from taking place to break away from the deflection at the rotation in-process, be favorable to improving the stability of slider 11 and slider two 15 when rotating, and then be convenient for guarantee the drainage plate 5 to the discharge effect of cavity 4 (refer to figure 2) interior ponding.

Referring to fig. 2 and 3, a one-way valve 19 is fixed in the liquid guiding through hole 6, when rainwater entering the cavity 4 flows onto the drainage plate 5, the rainwater flows to the lower end part of the cavity 4 through the one-way valve 19 in the liquid guiding through hole 6, the rainwater can only flow to the lower end part of the cavity 4 by arranging the one-way valve 19, and when the drainage plate 5 moves downwards, the rainwater cannot reversely flow back to the upper end part of the cavity 4, so that the drainage effect is improved; the whole toper that is of

drain bar

5, 5 middle height of drain bar are less than the height that is close to vertical plate 3 department for the rainwater that flows on drain bar 5 flows to drain bar 5 middle part, flows from drain through-hole 6 again, is favorable to improving drainage effect. Simultaneously, the upper end surface of the drainage plate 5 is free from rainwater accumulation, and the rainwater in the cavity 4 can be fully drained.

Referring to fig. 2 and 4, drain bar 5 reciprocates the in-process, and the rainwater can be mingled with some debris with leading liquid through-hole 6 contact in the rainwater, and filter screen 23 is all installed to two tip of leading liquid through-hole 6, sets up filter screen 23, is convenient for filter the debris of rainwater, prevents debris blocking leading liquid through-hole 6, and the rainwater of being convenient for flows to tip under cavity 4.

Referring to fig. 3 and 4, the drainage plate 5 is provided with a plurality of air vents 26 penetrating through the drainage plate 5, the lower end surface of the drainage plate 5 near the air vents 26 is connected with a rubber sheet 27 matched with the air vents 26, the rubber sheet 27 comprises a left sheet 28 and a right sheet 29, and the right sheet 29 is fixedly connected with the half sides of the air vents 26. When water is accumulated at the lower end part of the cavity 4 (refer to fig. 2), when the drainage plate 5 moves upwards, the left sheet 28 is in an open state under the action of the impact force of rainwater, so that the rainwater can flow to the lower end part of the cavity 4 (refer to fig. 2); when the drain board 5 moves downwards, the left piece 28 is pushed by the air flow to be attached to the air guide hole 26, so that the rainwater cannot flow back to the upper end surface of the drain board 5.

Referring to fig. 1 and 2, after ponding in the cavity 4 is discharged, the inner wall of the cavity 4 is still in a wet state, the moisture of the inner wall of the cavity 4 easily causes adverse effects on the overall performance of the wall body 1, and when the drain board 5 moves upwards, under the action of air flow pushing, the left sheet 28 (referring to fig. 3) is opened, so that the air circulation above and below the drain board 5 is facilitated, and further, the drying speed of the inner wall of the cavity 4 is favorably accelerated, and the overall drying of the wall body 1 is facilitated.

Referring to fig. 2, in the up-and-down moving process of the drainage plate 5, the drainage plate 5 is easily abraded with the wall body 1, four end corners of the lower end surface of the drainage plate 5 are fixedly connected with sliding rods 17, a position, close to the sliding rods 17, of the transverse plate 2 is fixedly connected with a limiting ring 18, and the sliding rods 17 are slidably connected in the limiting ring 18. Set up slide bar 17 and spacing ring 18, make drain bar 5 reciprocate the in-process, the slide bar 17 of drain bar 5 slides from top to bottom in spacing ring 18, carry on spacingly to drain bar 5, prevent that the skew about drain bar 5 for drain bar 5 only moves in vertical direction, is favorable to improving the stability of drain bar 5 at the in-process that reciprocates, guarantees the extrusion discharge effect of drain bar 5 with ponding in cavity 4.

Referring to fig. 2, the lower end of the cavity 4 is fixedly provided with an inclined water guide plate 22, the lower end of the water guide plate 22 is flush with the lowest point of the drain hole 7, and the water guide plate 22 is arranged in an inclined manner, so that accumulated water in the lower end of the air can flow to one end of the drain hole 7, the discharge speed of the accumulated water in the lower end of the cavity 4 can be accelerated, the drainage effect is improved, and meanwhile, the accumulated water in the cavity 4 can be fully discharged.

Referring to fig. 2, the lower end surface of the drainage plate 5 is fixedly connected with a plurality of vertical plates 24, the vertical plates 24 are fixedly connected with a plurality of brushes 25, when accumulated water in the cavity 4 is completely drained, the inner wall of the wall body 1 is washed by the brushes 25 on the vertical plates 24 in the up-and-down moving process of the drainage plate 5, so that sundries adhered to the wall body 1 can be scraped conveniently, and the up-and-down movement of the drainage plate 5 is prevented from being influenced by the sundries.

Referring to fig. 1 and 2, the outer wall of the wall 1 is fixedly connected with a plurality of reinforcing ribs 30, and the reinforcing ribs 30 are beneficial to enhancing the overall stability of the wall 1; 3 outer wall fixedly connected with of vertical plate wraps up in the outside buckler 32 of motor 8, and the buckler 32 has improved motor 8's waterproof performance, is convenient for guarantee motor 8's normal operation, and then guarantees the drainage effect of 5 to ponding in the cavity 4 of drain bar.

Referring to fig. 1 and 2, when rainwater does not exist in the cavity 4, insects and rats easily enter the cavity 4 from the drain hole 7, and the adverse effect is caused on the drainage of the subsequent cavity 4, a plunger 31 is connected to the position, close to the drain hole 7, of the wall body 1, the plunger 31 is arranged, and when the rain does not fall, an operator covers the drain hole 7 with the plunger 31, so that the insects and rats are prevented from entering the wall body 1 through the drain hole 7; when raining, the operator pulls out the plunger 31 from the drain hole 7, which facilitates the drainage of rainwater in the cavity 4.

The implementation principle of the embodiment is as follows: in the heavy rainfall weather, the rainfall is large, rainwater easily permeates into the cavity 4 of the wall body 1 and flows downwards along the cavity 4 to flow onto the drainage plate 5, and then flows to the lower end part of the cavity 4 through the one-way valve 19 of the liquid guide through hole 6 and is drained to the outside of the wall body 1 from the drainage hole 7; when water is accumulated at the lower end part of the cavity 4, the motor 8 drives the connecting rod 10 to rotate, the connecting rod 10 drives the first sliding block 11 to slide in the first strip-shaped groove 14 of the strip-shaped plate 13, so as to drive the circular ring 12 to rotate around the disc 9, one end of the first sliding block 11 is hinged with the second sliding block 15, so that the second sliding block 15 rotates, the second sliding block 15 is connected in the second strip-shaped groove 16 of the drainage plate 5 in a sliding manner, so that the drainage plate 5 slides up and down in the cavity 4, meanwhile, the sliding rod 17 slides up and down in the limiting ring 18, and in the up-and-down moving process of the drainage plate 5, the water accumulated at the lower end part of the cavity 4 is extruded, the water accumulated in the drainage hole 7; after the ponding in the cavity 4 was discharged, when drain bar 5 moved upwards, under the air current impetus, left piece 28 was opened, and the circulation of air of drain bar 5 top and below of being convenient for, and then was favorable to accelerating the drying rate of cavity 4 inner wall, the whole drying of wall body 1 of being convenient for.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an assembly type structure externally-hung wallboard drainage structures, includes wall body (1), its characterized in that: the wall body (1) comprises transverse plates (2) and longitudinal plates (3) which are parallel to each other, a cavity (4) is arranged inside the wall body (1), the cavity (4) is connected with a drainage plate (5) which is matched with the cavity (4) in a sliding manner, the drainage plate (5) is provided with a plurality of liquid guide through holes (6), a plurality of drainage holes (7) are formed in the lower end of the wall body (1), the outer wall of the longitudinal plate (3) is fixedly connected with a motor (8), the inner wall of the longitudinal plate (3) is fixedly connected with a disc (9), an output shaft of the motor (8) penetrates through the disc (9) and is fixedly connected with a connecting rod (10), one end, far away from an output shaft of the motor (8), of the connecting rod (10) is hinged with a first sliding block (11), the outer annular surface of the disc (9) is rotatably connected with a circular ring (12), a first sliding block (11) is connected in a first strip-shaped groove (14) in a sliding mode, a second sliding block (15) is hinged to one end, away from a connecting rod (10), of the first sliding block (11), a second strip-shaped groove (16) is formed in one end, close to a disc (9), of the drainage plate (5), and the second sliding block (15) is connected in the second strip-shaped groove (16) in a sliding mode.

2. The assembly type structure of building external wall panel drainage structure of claim 1, wherein: four end angle departments of terminal surface fixedly connected with slide bar (17) under drain bar (5), slide bar (2) are close to slide bar (17) department fixedly connected with spacing ring (18), slide bar (17) sliding connection in spacing ring (18).

3. The assembly type structure of building external wall panel drainage structure of claim 1, wherein: a one-way valve (19) is fixedly arranged in the liquid guide through hole (6), the whole drainage plate (5) is conical, and the middle height of the drainage plate (5) is smaller than the height close to the longitudinal plate (3).

4. The assembly type structure of building external wall panel drainage structure of claim 1, wherein: limiting grooves (20) are formed in the first strip-shaped grooves (14) and the second strip-shaped grooves (16) along the length direction, protruding strips (21) are fixedly connected with the first sliding blocks (11) and the second sliding blocks (15), and the protruding strips (21) are connected with the limiting grooves (20) in a sliding mode.

5. The assembly type structure of building external wall panel drainage structure of claim 1, wherein: an inclined water guide plate (22) is fixedly arranged at the lower end part of the cavity (4), the height of one end, close to the disc (9), of the water guide plate (22) is larger than that of one end, far away from the disc (9), of the water guide plate (22), and one end, far away from the disc (9), of the water guide plate (22) is flush with the lowest point of the drain hole (7).

6. The assembly type structure of building external wall panel drainage structure of claim 1, wherein: two ends of the liquid guide through hole (6) are fixedly provided with filter screens (23), the lower end face of the drainage plate (5) is fixedly connected with a plurality of vertical plates (24), and the vertical plates (24) are fixedly connected with a plurality of brushes (25).

7. The assembly type structure of building external wall panel drainage structure of claim 1, wherein: a plurality of air guide holes (26) penetrating through the drainage plate (5) are formed in the drainage plate (5), a rubber sheet (27) matched with the air guide holes (26) is connected to the position, close to the air guide holes (26), of the lower end face of the drainage plate (5), the rubber sheet (27) comprises a left sheet (28) and a right sheet (29), and the right sheet (29) is fixedly connected with the half sides of the air guide holes (26).

8. The assembly type structure of building external wall panel drainage structure of claim 1, wherein: the outer wall of the wall body (1) is fixedly connected with a plurality of reinforcing ribs (30), a plunger (31) is connected to the position, close to the drain hole (7), of the wall body (1), and a waterproof cover (32) wrapped outside the motor (8) is fixedly connected to the outer wall of the longitudinal plate (3).