CN213836865U - Interlayer water tank drainage device - Google Patents

Abstract

The utility model relates to an interlaminar water tank drainage device, include: the water tank comprises a water tank body and a first drainage pipe, a containing cavity is arranged in the water tank body, and the first drainage pipe is arranged on the water tank body and communicated with the containing cavity; the water collecting piece is provided with a water collecting tank, and the water collecting tank is used for receiving water flowing out of the first drainage pipe; the second drain pipe is arranged on the water collecting piece and communicated with the water collecting tank. This device adopts the piece that catchments of form of turning up, changes the direct mode of arranging to ground scattered of tradition, uses the piece that catchments to collect water tank body exhaust to by the second drain pipe of gravity drainage low level, effectively avoid rivers to splash. Simultaneously, the second drain pipe of lower floor need not to look for the slope, can wear the roof beam to lay, effectively promotes the net height of lower floor, avoids the pipeline to arrange mixed and disorderly alternately.

Description

Interlayer water tank drainage device

Technical Field

The utility model relates to a building water supply and drainage technical field especially relates to an interlaminar water tank drainage device.

Background

With the development of the existing building engineering technology, more and more high-rise buildings need to be provided with interlayer water tanks to meet the water supply requirement. The emptying or overflowing mode of the interlayer water tank of the high-rise building is the same as that of a conventional water tank, and in the traditional technology, the water in the water tank is scattered and discharged to the ground in a direct scattering and discharging mode, then is collected by a ground floor drain or a drainage ditch and is discharged into a drainage pipeline or a water collecting well in the ground through gravity.

However, at present, the water tank between the high-rise building layers is arranged in the pump room of the middle layer, the corresponding lower part is an owner or a tenant of independent property right, in the traditional direct scattered drainage mode, the gravity drainage pipeline of the pump room is laid on the ceiling of the layer, the use clear height of the property of the layer is reduced due to the fact that the pipe diameter is large, the gradient of the pipeline is large, and the property value and the office grade are reduced. On the other hand, in order to use the ceiling of the lower property of the pump room, a large amount of air conditioning water, air pipes, fire fighting pipelines and the like are installed on the ceiling, and then the gravity with the larger pipe diameter is added to find the slope pipe, so that the slope pipe is difficult to avoid with other pipelines, the overhead line is complicated in arrangement, and the pipeline modification and adjustment difficulty is increased.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide an interlaminar water tank drainage device, effectively improve the lower floor net height, need not to look for the slope, can wear the roof beam and lay, effectively avoid crossing with other pipelines.

An interlayer water tank drainage device comprises a water tank, a drainage pipe and a drainage pipe, wherein the water tank comprises a water tank body and a first drainage pipe, an accommodating cavity is arranged in the water tank body, and the first drainage pipe is arranged on the water tank body and is communicated with the accommodating cavity; the water collecting piece is provided with a water collecting groove, and the water collecting groove is used for receiving water flowing out of the first drainage pipe; and the second drain pipe is arranged on the water collecting piece and is communicated with the water collecting tank.

In the interlayer water tank drainage device, in the construction process, the second drainage pipe is firstly buried in a ceiling of a lower floor, and one end of the second drainage pipe extends out of the ground; then the water collecting piece is arranged on the floor ground, so that the second water discharging pipe is communicated with the water collecting tank; and finally, one end of the first drainage pipe is arranged on the water tank body, so that the other end of the first drainage pipe is communicated with the water collecting tank. The interlayer water tank drainage device arranged like this adopts the water collecting piece in the form of turning up, changes the mode that the traditional water collecting piece directly discharges to the ground, uses the water collecting piece to collect the water discharged by the water tank body, and discharges the water into the second drainage pipe at a low position by gravity, thereby effectively avoiding water flow splashing. Simultaneously, the second drain pipe of lower floor need not to look for the slope, can wear the roof beam to lay, effectively promotes the net height of lower floor, avoids the pipeline to arrange mixed and disorderly alternately.

In one embodiment, the water collecting member further comprises a rain bucket, the rain bucket is mounted on the wall of the water collecting tank, and the rain bucket is communicated with the second drain pipe.

In one embodiment, the second drain pipe comprises a first drain section and a second drain section, the second drain section is communicated with the water collecting tank through the first drain section, and the first drain section and the second drain section are arranged in a crossed mode.

In one embodiment, the water tank further comprises a base, and the water tank body is arranged on the base.

In one embodiment, a first water level is arranged on the wall of the accommodating cavity, and one end of the first drainage pipe is lower than or flush with the first water level along the height direction of the water tank body at the installation position of the water tank body.

In one embodiment, a valve is arranged on the first drainage pipe.

In one embodiment, the water tank further comprises a third water drainage pipe, a second water level is further arranged on the wall of the accommodating cavity, the third water drainage pipe is arranged on the water tank body and communicated with the accommodating cavity, and the position of the water inlet end of the third water drainage pipe is higher than or flush with the second water level along the height direction of the water tank body.

In one embodiment, one end of the third water drainage pipe is communicated with a funnel structure, and one side surface of the funnel structure, which is far away from the third water drainage pipe, is flush with the second water level in the accommodating cavity.

In one embodiment, one end of the first drain pipe, which is far away from the water tank body, is arranged on the side wall of the third drain pipe and is communicated with the third drain pipe.

In one embodiment, the water tank further comprises a water inlet pipe, and the water inlet pipe is arranged on the water tank body and is communicated with the accommodating cavity.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of an interlayer water tank drainage device in one embodiment.

Description of reference numerals:

100. interlayer water tank drainage device, 110, water tank body, 111, first drain pipe, 112, hold the chamber, 113, base, 114, first water level, 115, second water level, 116, valve, 117, third drain pipe, 118, funnel structure, 119, inlet tube, 120, water-collecting part, 121, water catch bowl, 122, rainwater fill, 130, second drain pipe, 131, first drainage section, 132, second drainage section, 140, water tank.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In one embodiment, referring to fig. 1, an inter-floor cistern drain 100 comprises: a water tank 140, a water collecting member 120, and a second water discharging pipe 130. The water tank 140 includes a tank body 110 and a first drain pipe 111, a containing cavity 112 is provided in the tank body 110, and the first drain pipe 111 is installed on the tank body 110 and is communicated with the containing cavity 112. The water collecting member 120 is provided with a water collecting groove 121, and the water collecting groove 121 is used for receiving water flowing out of the first drainage pipe 111. The second drain pipe 130 is installed on the water collection member 120 and communicates with the water collection tank 121.

In the interlayer water tank drainage device 100, in the construction process, the second drainage pipe 130 is firstly buried in the ceiling of the lower floor, and one end of the second drainage pipe 130 extends out of the ground; then the water collecting member 120 is installed on the floor surface so that the second drain pipe 130 communicates with the water collecting tank 121; finally, one end of the first drain pipe 111 is installed on the tank body 110 so that the other end of the first drain pipe 111 is led to the sump 121. The interlayer water tank drainage device 100 adopts the water collecting part 120 in the reverse form, changes the traditional mode of directly scattering and draining to the ground, uses the water collecting part 120 to collect water drained from the water tank body 110, and drains the water into the second drainage pipe 130 at a low position by gravity, thereby effectively avoiding water flow splashing. Meanwhile, the second drain pipe 130 on the lower layer does not need to find a slope, can penetrate through the beam to be laid, effectively improves the net height of the lower layer, and avoids the mixed and disorderly crossing of the pipeline arrangement.

In one embodiment, referring to fig. 1, the water collecting member 120 further includes a rain scoop 122, the rain scoop 122 is mounted on the wall of the water collecting tank 121, and the rain scoop 122 is communicated with the second drainage pipe 130. Thus, the drainage speed of the water collecting member 120 can be effectively accelerated, and the drainage effect of the interlayer tank drainage device 100 can be improved.

Specifically, the rainwater hopper 122 has a rectifying grill device, which can effectively accelerate the drainage speed. The rectification grid has the rectification effect, avoids forming too big swirl in drainage process, effectively stabilizes the water level before fighting, reduces the aeration. On the other hand, the rectifying grid can block larger impurities, thereby reducing or even preventing larger obstacles from entering the second drain pipe 130 to cause blockage.

Further, the rain scoop 122 is a siphon type rain scoop. Accordingly, the siphon-type rain water bucket and the second drain pipe 130 form a siphon structure. Siphon rainwater fill 122 has extremely strong anti-vortex function, can prevent well that the air from following the rivers of rainwater fill 122 entrance, gets into whole water-collecting member 120 together, simultaneously, when the water level rose to the certain extent in water catch bowl 121, forms the complete separation air admission of water seal, is favorable to holding the water that chamber 112 was discharged and steadily discharges into second drain pipe 130. On the other hand, the siphon rainwater hopper reduces the water accumulation depth of the water collection tank 121 to the maximum extent, so that the water accumulation load borne by the ground of the layer is reduced to the minimum; meanwhile, the rated flow of the rainwater hopper 122 is also improved, and the drainage effect of the interlayer water tank drainage device 100 is effectively improved.

In one embodiment, with reference to fig. 1, the second drainage pipe 130 includes a first drainage section 131 and a second drainage section 132, the second drainage section 132 is connected to the water collection tank 121 through the first drainage section 131, and the first drainage section 131 intersects the second drainage section 132. As such, on the one hand, the first drainage section 131 makes the water collecting tank 121 and the second drainage section 132 form a height difference, so that the water in the water collecting tank 121 can be drained into the second drainage section 132 by its own weight. On the other hand, the crossing arrangement of first drainage section 131 and second drainage section 132 is also favorable to promoting the net height of lower floor, and the roof beam that wears of second drainage pipe 130 lays and has saved lower floor's smallpox space, is favorable to improving the property value and the official working grade in lower floor's space.

Further, first drainage section 131 is connected with second drainage section 132 is perpendicular, so for ponding in the water catch bowl 121 can discharge smoothly in second drain pipe 130, and then discharges into lower floor's pipeline smoothly, need not to increase the great gravity of pipe diameter and look for the slope pipe, raises the lower floor's space of water tank 140 place and uses net height, is favorable to improving the property value and the official working grade of lower floor's space.

Alternatively, the first drainage section 131 and the second drainage section 132 may be connected by a screw, a bolt, a snap, an interference fit, an adhesive, an integral molding, or other connection methods. Of course, in other embodiments, a connection structure may be further disposed at one end of the first water discharging section 131, and the second water discharging section 132 may be mounted on the connection structure, so that the second water discharging section 132 is indirectly connected to the first water discharging section 131.

Specifically, the first drainage section 131 and the second drainage section 132 are connected by threads, so that the stability of the overall structure of the second drainage pipe 130 can be effectively improved; meanwhile, the drainage device has the drainage tightness, prevents the leakage at the joint and effectively improves the overall use quality of the interlayer water tank drainage device 100. The present embodiment provides only one connection manner between the first drainage segment 131 and the second drainage segment 132, but not limited thereto.

In one embodiment, referring to fig. 1, the water tank 140 further includes a base 113, and the water tank body 110 is mounted on the base 113. Thus, the overall height of the water tank body 110 is effectively raised through the base 113, so that a height difference is formed between the water tank body 110 and the water collecting piece 120, and water in the accommodating cavity 112 can be smoothly discharged into the water collecting tank 121; meanwhile, the space of the bottom surface is saved, so that the installation position of the water collecting piece 120 is wider.

Further, the number of the bases 113 is two or more. Therefore, the more than two bases 113 can improve the stability of the bases 113 for supporting the water tank body 110, and reduce the risk of the water tank body 110 falling over in the operation process.

Specifically, the number of the pedestals 113 is three. The three bases 113 are arranged in a triangular shape, so that stable support can be provided for the water tank body 110, the whole water tank 140 is lifted, a height difference is formed between the water tank body 110 and the water collecting piece 120, and water in the accommodating cavity 112 can be smoothly drained into the water collecting tank 121; meanwhile, the space of the bottom surface is saved, so that the installation position of the water collecting piece 120 is wider. The present embodiment provides only one arrangement manner of the base 113, but not limited thereto.

Alternatively, the connection manner of the water tank body 110 and the base 113 may be a bolt connection, a snap connection, an interference fit, an adhesive, a welding, an integral molding or other connection manners. Of course, in other embodiments, a connection structure may be disposed at one end of the tank body 110, and the base 113 may be mounted on the connection structure, so that the base 113 is indirectly connected to the tank body 110.

Specifically, the connection mode of the water tank body 110 and the base 113 is the bolt connection, so the connection mode can ensure the stability of the installation of the water tank body 110 on the base 113, prevent the water tank body 110 from being toppled when in operation due to vibration, and effectively improve the overall use quality of the interlayer water tank drainage device 100. The present embodiment provides only one connection way between the tank body 110 and the base 113, but not limited thereto.

In one embodiment, referring to fig. 1, a first water level 114 is disposed on a wall of the accommodating chamber 112, and an end of the first drain pipe 111 is lower than or level with the first water level 114 along a height direction of the tank body 110 at an installation position of the tank body 110. Thus, the first water level 114 is set to provide the lowest water level of the tank body 110. When the water level in the accommodating cavity 112 is higher than the first water level 114, no water needs to be added into the accommodating cavity 112; when the water level is lower than the first water level 114, water is continuously added into the water tank body 110, so that the water level is prevented from overflowing the accommodating cavity 112 during water adding, and the normal operation of the water tank 140 can be effectively protected. In addition, the first water level 114 is set to maintain the water tank 140 in continuous water discharge and water filling circulation, which is beneficial to protect the internal environment of the accommodating cavity 112. When the water tank body 110 is made of metal, the rusting probability is reduced, the rusting time is delayed, and the service life of the water tank 140 is prolonged. Meanwhile, the first water level 114 provided in the water tank body 110 can also meet the fire-fighting requirement, so that a certain amount of water always exists in the water tank 140, and a water source can be rapidly provided for fire extinguishing and escape in case of emergency, such as fire.

In one embodiment, with continued reference to fig. 1, the first drain pipe 111 is provided with a valve 116. It can be seen that the valve 116 provided in the first drain pipe 111 effectively controls the flow rate of the water discharged from the accommodating chamber 112 to the water collecting sump 121 through the first drain pipe 111, thereby preventing the water from splashing. Meanwhile, in the process of adding water into the accommodating cavity 112, the sealing performance of the accommodating cavity 112 can be ensured, and the phenomenon that water is added and discharged at the same time is avoided.

Alternatively, the valve 116 may be a ball valve, gate valve, butterfly valve, stop valve, check valve, pressure relief valve, trap, or other type of valve.

Specifically, the type of valve 116 is a shut-off valve. The stop valve has the advantages of small friction, long service life, high durability, convenient maintenance and the like in the opening and closing process, and is not only suitable for medium and low pressure, but also suitable for high pressure environment. Meanwhile, the shut-off valve can effectively control the drain flow rate of the first drain pipe 111, providing various possibilities for the control of the valve 116. The present embodiment provides only one arrangement of the valve 116, but not limited thereto.

Alternatively, the valve 116 and the first drain pipe 111 may be bolted, snapped, sealed, screwed, glued or otherwise connected.

Specifically, the valve 116 is connected to the first drain pipe 111 by a bolt. Bolted connection's mode simple to operate, the simple operation, convenient to detach, and be convenient for with the drain pipe cooperation of various models, application scope is wide, connects reliably, can effectively improve the structural stability of first drain pipe 111 to improve the whole use quality of water tank drainage device 100 between the layer. The present embodiment provides only one connection way between the valve 116 and the first drainage pipe 111, but not limited thereto.

In one embodiment, referring to fig. 1, the water tank 140 further includes a third drainage pipe 117, a second water level 115 is disposed on the wall of the accommodating cavity 112, the third drainage pipe 117 is disposed on the water tank body 110, the third drainage pipe 117 is communicated with the accommodating cavity 112, and one end of the third drainage pipe 117 is lower than or level with the second water level 115 along the height direction of the water tank body 110 at the installation position of the water tank body 110. The second water level 115 is set to provide an overflow water level for the water tank body 110, and when the water level is higher than the second water level 115, the water in the accommodating chamber 112 can overflow, thereby ensuring that the water level slowly rises or even stops rising. The highest value of the water level of the accommodating cavity 112 can be limited by the second water level 115, so that the situation that the lower end of the water tank body 110 is excessively pressurized due to overlarge liquid pressure in the accommodating cavity 112 is favorably prevented, damage such as deformation or breakage of the tank wall occurs, the service life of the water tank body 110 is favorably prolonged, and the operation safety of the interlayer water tank drainage device 100 can be ensured.

Specifically, the second water level 115 and the first water level 114 have a height difference, and the second water level 115 is higher than the first water level 114. Thus, the water tank body 110 has a minimum water level and an overflow water level, which can ensure that a certain amount of water is always stored in the water tank 140 and avoid accidents caused by an excessively high water amount.

Further, a third drain pipe 117 is installed on the tank body 110, and one end of the third drain pipe 117 extends into the accommodating cavity 112. In this way, when the water level in the receiving chamber 112 exceeds the second water level 115, the water flows out to the third drain pipe 117, so that the water level does not rapidly rise and is stabilized at the second water level 115. Meanwhile, when it is found that the third drain pipe 117 drains the water, the waterproofing into the accommodating chamber 112 is stopped, so that the water level in the accommodating chamber 112 is stabilized not to exceed the second water level 115.

In another embodiment, a third drainage pipe 117 is installed outside the accommodating cavity 112, a water outlet is provided at the second water level 115, and the third drainage pipe 117 is communicated with the accommodating cavity 112 through the water outlet. Therefore, the structure of the tank body 110 is simpler, the third drain pipe 117 is easy to install, maintenance is facilitated, and the quality of the interlayer tank drainage device 100 is effectively improved.

In one embodiment, referring to fig. 1, one end of the third drainage pipe 117 is communicated with a funnel structure 118, and a side surface of the funnel structure 118 away from the third drainage pipe 117 is flush with the second water level 115 in the accommodating chamber 112. Thus, the funnel structure 118 is adopted, the water inlet area of the third water discharge pipe 117 can be enlarged, and the water discharge flow rate of the third water discharge pipe 117 can be increased, so that the water higher than the second water level 115 in the accommodating cavity 112 can be discharged quickly.

Further, a third drainage pipe 117 is installed outside the accommodating cavity 112, and one end of the third drainage pipe 117 is communicated with the water outlet through a funnel structure 118, and further communicated with the accommodating cavity 112. In this manner, the water higher than the second water level 115 in the receiving cavity 112 is also facilitated to be rapidly discharged. Meanwhile, the third drain pipe 117 is simply installed, is convenient to maintain, and effectively improves the quality of the interlayer water tank drainage device 100.

In one embodiment, referring to fig. 1, an end of the first drain pipe 111 away from the tank body 110 is disposed on a sidewall of the third drain pipe 117 and is communicated with the third drain pipe 117. By such arrangement, the first drainage pipe 111 is communicated with the water outlet end of the third drainage pipe 117, which is beneficial to reducing the drainage area. Since the third drain pipe 117 is long, when the first drain pipe 111 is connected to the third drain pipe 117, the first drain pipe 111 can provide support to the third drain pipe 117, so that the third drain pipe 117 is stably installed, thereby facilitating improvement of operation stability of the inter-floor tank drain device 100.

In one embodiment, with continued reference to fig. 1, the water tank 140 further includes a water inlet pipe 119, and the water inlet pipe 119 is mounted on the water tank body 110 and is communicated with the accommodating cavity 112. Therefore, water can be drained into the accommodating cavity 112, and when the water in the accommodating cavity 112 is lower than the first water level 114, water can be timely supplemented into the water tank 140, so that the water tank 140 can complete the functions of water storage and drainage.

Further, one end of the water inlet pipe 119 is installed at a position higher than the second water level 115. Therefore, the water inlet pipe 119 can be prevented from generating backflow when the water in the accommodating cavity 112 is higher than the second water level 115 in the water discharging process of the accommodating cavity 112, and the water source pollution is avoided.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. An inter-floor tank drain, comprising:

the water tank comprises a water tank body and a first drainage pipe, an accommodating cavity is formed in the water tank body, and the first drainage pipe is arranged on the water tank body and is communicated with the accommodating cavity;

the water collecting piece is provided with a water collecting groove, and the water collecting groove is used for receiving water flowing out of the first drainage pipe; and

and the second drain pipe is arranged on the water collecting piece and communicated with the water collecting tank.

2. The inter-floor tank drainage device of claim 1, wherein the water collection member further comprises a rain scoop mounted on a wall of the water collection tank, the rain scoop being in communication with the second drain pipe.

3. The inter-floor tank drainage device according to claim 1, wherein the second drainage pipe includes a first drainage section and a second drainage section, the second drainage section communicating with the sump through the first drainage section, the first drainage section intersecting the second drainage section.

4. The inter-floor tank drain of claim 1, wherein the tank further comprises a base, the tank body being mounted on the base.

5. The inter-floor tank drain of claim 1, wherein a first water level is provided on a wall of the receiving chamber, and one end of the first drain pipe is lower than or flush with the first water level in a height direction of the tank body at an installation position of the tank body.

6. The inter-floor tank drain of claim 1, wherein a valve is provided on said first drain pipe.

7. The interlayer water tank drainage device as claimed in claim 1, wherein the water tank further comprises a third drainage pipe, a second water level is further arranged on the wall of the accommodating cavity, the third drainage pipe is arranged on the water tank body, the third drainage pipe is communicated with the accommodating cavity, and the position of the water inlet end of the third drainage pipe is higher than or flush with the second water level along the height direction of the water tank body.

8. The interlayer water tank drainage device according to claim 7, wherein one end of the third drainage pipe is communicated with a funnel structure, and one side of the funnel structure far away from the third drainage pipe is flush with the second water level in the accommodating cavity.

9. The inter-floor tank drainage device according to claim 7, wherein an end of the first drain pipe remote from the tank body is installed on a side wall of the third drain pipe and communicates with the third drain pipe.

10. The inter-floor water tank drainage device according to any one of claims 1 to 9, wherein the water tank further comprises a water inlet pipe provided on the water tank body and communicating with the accommodation chamber.

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