A dewatering device integrating overflow and drainage

Abstract

The present invention discloses an overflow and drainage integrated dewatering device, comprising a dewatering body, wherein the dewatering body has a drainage cavity, an overflow port and an auxiliary drainage port are formed on the outer wall of the dewatering body, a water drop plug is provided between the overflow port and the auxiliary drainage port, an overflow seat which can be connected to the overflow port and the auxiliary drainage port is sleeved at the outer wall of the dewatering body corresponding to the overflow port and the auxiliary drainage port, an overflow valve assembly which can open and close the overflow seat according to the water pressure in the sensing basin or the washing table is provided in the overflow seat, and the dewatering device itself has a drainage effect, the dewatering device adopts the method of forming an overflow port and an auxiliary drainage port on the dewatering body, and further providing an overflow seat for draining overflow water between the overflow port and the auxiliary drainage port, and combining the overflow valve assembly which can sense the change of water pressure to open and close the overflow seat to realize the function of draining overflow water of the dewatering device, and at the same time, it also avoids the installation, cleaning and maintenance problems caused by the overflow port and the double-layer structure on the basin or the washing table.

Description

Technical Field

[0001] The invention relates to the technical field of drainers for water storage devices, in particular to a drainer integrating overflow and drainage. Background Art

[0002] The drainer (also called the drain) plays a very important role in the kitchen and bathroom, and is basically indispensable in daily life. The existing drainer is matched with the basin or the sink, so it will have an overflow outlet far away from the drain. When the drain is closed, the water can fill the basin and the sink. An overflow outlet is set on the side wall of the basin or the sink. If the faucet is not closed, the overflowing water can flow from the overflow outlet into the overflow outlet of the drainer, and then flow into the drain pipe connected to the drainer to achieve the effect of overflow prevention.

[0003] In order to achieve the overflow effect and facilitate the installation of the basin or the washing table, the basin or the washing table with an overflow outlet generally has a double-layer structure, and the inner cavity between the double layers is connected to the overflow outlet and the overflow outlet of the drainer, which is mainly used to discharge the water overflowing from the overflow outlet of the basin or the washing table. Not only is the double-layer structure of the basin or the washing table troublesome to produce and manufacture, the structure is costly, and the inner cavity of the double-layer structure is inconvenient to clean, but there is also a leakage phenomenon after the inner cavity of the double-layer structure is connected to the overflow outlet of the drainer, and it is not convenient for later maintenance and other defects. Summary of the invention

[0004] The object of the present invention is to provide a dewatering device with overflow and drainage integrated therein, which can achieve an anti-overflow effect without requiring a double-layer structure in a wash basin or a washing table.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a dewatering device with overflow and drainage, comprising a dewatering body, wherein the dewatering body has a drainage cavity, the upper port of the drainage cavity is the drain outlet of a wash basin or a washing table, the drain outlet is provided with a drain plug, the lower end of the drainage cavity is the drain outlet, and an overflow port and an auxiliary drain port communicating with the drainage cavity are provided on the outer wall of the dewatering body, wherein a drop plug which can block or open the drainage cavity for direct drainage is provided between the overflow port and the auxiliary drain port, the drop plug is linked with the drop plug, an overflow seat which can be separately connected to the overflow port and the auxiliary drain port is provided on the outer wall of the dewatering body corresponding to the overflow port and the auxiliary drain port, and an overflow valve assembly which opens and closes the overflow seat according to the water pressure in the wash basin or the washing table is provided in the overflow seat.

[0006] The beneficial effects of the present invention are as follows: the dewatering device itself has a drainage effect. The dewatering device adopts an overflow port and a secondary drainage port to be opened on the dewatering main body, and an overflow seat for draining overflow water is provided between the overflow port and the secondary drainage port. The overflow seat is opened and closed in combination with an overflow valve assembly that can sense changes in water pressure to realize the dewatering device having the function of draining overflow water. At the same time, it also avoids the installation, cleaning and maintenance problems caused by the overflow port and the double-layer structure on the washbasin or the washing table.

[0007] Preferably, a drainage shell is detachably provided at the lower end of the drainage body, and a main drainage port is provided on the side wall of the drainage shell, which is connected to an external drainage pipe through a pipe, and the lower end of the drainage cavity extends into the drainage shell, and the vertical position of the drainage port is below the main drainage port. In addition, a pull wire is provided on the outside of the drainage body, and an end cap is threadedly connected to the bottom end of the drainage shell, and the pull wire passes through the end cap into the drainage cavity and is connected to the drain plug, and the drain plug is driven by the pull wire to open or close the direct waterway of the overflow port and the auxiliary drain port. In addition, the end cap can achieve the purpose of regularly cleaning the sediment in the drainage cavity.

[0008] Preferably, the overflow seat includes a first channel respectively communicating with the overflow port, a second channel communicating with the auxiliary drain port, and an overflow chamber connecting the first channel and the second channel; the overflow valve assembly includes a pressure sensing diaphragm capable of sensing water pressure, a water-sealing piston, and a transmission mechanism for driving the pressure sensing diaphragm and the water-sealing piston to work in the same direction, wherein the pressure sensing diaphragm is arranged at a channel opening corresponding to the first channel in the overflow chamber to sense the water pressure of the first channel, the water-sealing piston is arranged at a channel opening corresponding to the second channel in the overflow chamber to open and close the second channel, the transmission mechanism is located outside the overflow chamber and is connected and linked with the pressure sensing diaphragm and the water-sealing piston, a water path dedicated to overflow of the wash basin or the washing table is connected between the overflow port and the auxiliary drain port through the overflow seat, and when the water level in the wash basin or the washing table reaches a certain height, that is, reaches a certain water pressure, the pressure sensing diaphragm is opened under the cooperation of the transmission mechanism so that the overflowing water flows through the first channel to the overflow chamber, and then is discharged from the auxiliary drain port through the second channel.

[0009] Preferably, the transmission mechanism includes a transmission housing, a membrane transmission rod, a piston transmission rod, and also includes a T-shaped lever, a linkage bridge, a positioning plate, a first spring sheet, and a second spring sheet arranged in the transmission housing, wherein one end of the piston transmission rod is connected and linked to the water sealing piston, one end of the membrane transmission rod is connected and linked to the pressure sensing membrane, the other end of the membrane transmission rod is connected and linked to one end of the T-shaped lever head, the T-shaped lever rotates with the other end of its head as a fulcrum, the bottom end of the T-shaped lever is connected and linked to one end of the linkage bridge, the other end of the linkage bridge is connected and linked to the other end of the piston transmission rod, and at the same time, the two ends of the first spring sheet are respectively connected to On the lower surface of the linkage bridge corresponding to the T-shaped lever and one end of the positioning plate, the other end of the positioning plate passes through the linkage bridge, and the two ends of the second spring piece are respectively connected to the other end of the positioning plate and the upper surface of the linkage bridge close to the piston transmission rod, thereby achieving the goal that the pressure sensing diaphragm is pushed open by the water pressure when the predetermined water pressure is reached, and then drives the water sealing piston to move in the same direction with the assistance of the T-shaped lever, the linkage bridge, the first spring piece and the second spring piece, so that the overflow seat connects the overflow port and the auxiliary drain port to discharge the overflowing water, and after the water pressure in the basin or the washing table decreases and is less than the elastic force of the first spring piece and the second spring piece, the overflow seat returns to its original position and closes the overflow seat under the elastic force of the first spring piece and the second spring piece.

[0010] Preferably, the transmission housing is integrally arranged on the outer surface of the overflow chamber, and the inner wall of the transmission housing is provided with limit blocks at the upper and lower positions corresponding to the linkage bridge close to one end of the piston transmission rod, and the inner wall of the transmission housing is provided with a limit block above one end of the linkage bridge close to the membrane transmission rod to prevent the transmission mechanism from being affected by the external environment, and also to prevent the first spring sheet and the second spring sheet from being excessively deformed under the action of water pressure and affecting their service life.

[0011] Preferably, an overflow port is formed between the drain plug and the drain outlet, and a filter anti-blocking plug overflow port is provided at the drain outlet to ensure that the pressure sensing membrane can sense the water pressure changes in the basin or washing table in real time, and the filter anti-blocking plug can achieve a water filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a specific embodiment 1 of the present invention;

[0013] Figure 2 It is a cross-sectional schematic diagram of a specific embodiment 1 of the present invention;

[0014] Figure 3 It is a structural diagram of the overflow seat and the overflow valve assembly of the present invention;

[0015] Figure 4 It is a structural schematic diagram of specific embodiment 2 of the present invention;

[0016] Figure 5 It is a cross-sectional view of specific embodiment 2 of the present invention.

[0017] In the figure: 1. dewatering body; 1-1. drainage chamber; 1-2. overflow port; 1-3. secondary drainage port; 2. downpipe plug; 3. downpipe plug; 4. overflow seat; 4-1. first channel; 4-2. second channel; 4-3. overflow chamber; 5. overflow valve assembly; 5-1. pressure sensing membrane; 5-2. water sealing piston; 5-3. transmission mechanism; 5-3-1. transmission housing; 5-3-2. membrane transmission rod; 5-3-3. piston transmission rod; 5-3-4. T-type lever; 5-3-5. linkage bridge; 5-3-6. positioning plate; 5-3-7. first spring piece; 5-3-8. second spring piece; 6. drainage shell; 7. main drainage port; 8. pull line; 9. end cover; 10. limit block; 11. limit card block; 12. overflow port; 13. filter anti-blocking plug. DETAILED DESCRIPTION

[0018] 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. Specific embodiment 1

[0019] like Figure 1-3 The present invention provides an overflow and drainage integrated dewatering device, comprising a dewatering body 1, wherein the dewatering body 1 has a drainage cavity 1-1, the upper end of the drainage cavity 1-1 is a drain outlet of a wash basin or a washing table, a drain plug 2 is arranged at the drain outlet, the lower end of the drainage cavity 1-1 is a drain outlet, a drainage waterway is formed between the drainage cavity 1-1 and the drain outlet, the drain outlet is connected to an external drainage pipe for drainage, an overflow port 1-2 and an auxiliary drain port 1-3 communicating with the drainage cavity are formed on the outer wall of the dewatering body 1, wherein a drain plug 3 which can block or open the drainage cavity 1-1 for direct drainage is arranged between the overflow port 1-2 and the auxiliary drain port 1-3, the drain plug 3 can block or open the drainage cavity 1-1 for direct drainage ... The water plug 3 is linked with the down-water plug 2, and the drainage waterway of the drainage chamber 1-1 is opened or closed by the down-water plug 3. An overflow seat 4 which can be connected to the overflow port 1-2 and the auxiliary drainage port 1-3 is sleeved on the outer wall of the dewatering body 1, corresponding to the overflow port 1-2 and the auxiliary drainage port 1-3. A drainage waterway for discharging excess water when the water in the basin or the washing table is stored is formed between the overflow seat 4 and the overflow port 1-2 and the auxiliary drainage port 1-3. The overflow seat 4 is provided with an overflow valve assembly 5 which opens or closes the overflow seat 4 according to the water pressure in the sensing basin or the washing table, so that the dewatering device has a water discharge function and can also replace the overflow port on the face or the washing table, and has an anti-overflow function;

[0020] The overflow seat 4 forms a waterway between the overflow port 1-2 and the auxiliary drain port 1-3 for discharging excess water from the wash basin or the washing table. The overflow seat 4 includes a first channel 4-1 respectively connected to the overflow port 1-2, a second channel 4-2 connected to the auxiliary drain port 1-3, and an overflow cavity 4-3 connected to the first channel 4-1 and the second channel 4-2; the overflow valve assembly 5 includes a pressure sensing diaphragm 5-1 that can sense water pressure, a water sealing piston 5-2, and a transmission mechanism 5-3 that drives the pressure sensing diaphragm 5-1 and the water sealing piston 5-2 to work in the same direction, wherein the pressure sensing diaphragm 5-1 is arranged in the overflow cavity 4-3 corresponding to the first channel 4-1 and the second channel 4-2. The water pressure of the first channel 4-1 is sensed at the channel opening of the first channel 4-1, and the water-sealing piston 5-2 is arranged at the channel opening of the second channel 4-2 in the overflow chamber 4-3 to open and close the second channel 4-2. The transmission mechanism 5-3 is located outside the overflow chamber 4-3 and is connected and linked with the pressure sensing membrane 5-1 and the water-sealing piston 5-2. When the water surface in the basin or the washing table reaches a certain height, that is, a certain water pressure, the pressure sensing membrane 5-1 is opened to allow the overflowing water to flow through the first channel 4-1 to the overflow chamber 4-3, and then be discharged from the secondary drain port 1-3 through the second channel 4-2.

[0021] The transmission mechanism 5-3 includes a transmission housing 5-3-1, a membrane transmission rod 5-3-2, a piston transmission rod 5-3-3, and also includes a T-type lever 5-3-4, a linkage bridge 5-3-5, a positioning plate 5-3-6, a first spring piece 5-3-7, and a second spring piece 5-3-8 arranged in the transmission housing 5-3-1, wherein one end of the piston transmission rod 5-3-3 is connected and linked with the water sealing piston 5-2, one end of the membrane transmission rod 5-3-2 is connected and linked with the pressure sensing membrane 5-1, the other end of the membrane transmission rod 5-3-2 is connected and linked with one end of the head of the T-type lever 5-3-4, the T-type lever 5-3-4 rotates with the other end of its head as a fulcrum, the bottom end of the T-type lever 5-3-4 is connected and linked with one end of the linkage bridge 5-3-5, the other end of the linkage bridge 5-3-5 is connected and linked with the other end of the piston transmission rod 5-3-3, and at the same time, the two ends of the first spring piece 5-3-7 are respectively connected It is arranged on the lower surface of the linkage bridge 5-3-5 corresponding to the T-shaped lever 5-3-4 and one end of the positioning plate 5-3-6. The other end of the positioning plate 5-3-6 passes through the linkage bridge 5-3-5. The two ends of the second elastic sheet 5-3-8 are respectively connected to the other end of the positioning plate 5-3-6 and the upper surface of the linkage bridge 5-3-5 close to the piston transmission rod 5-3-3, so that the pressure sensing membrane 5-1 is pushed open by the water pressure when the predetermined water pressure is reached, and then the pressure sensing membrane 5-1 is pushed open by the water pressure at the T-shaped lever. 5-3-4, linkage bridge 5-3-5, first spring piece 5-3-7, second spring piece 5-3-8 assist in driving the water sealing piston 5-2 to move in the same direction, so as to achieve the overflow seat 4 connecting the overflow port 1-2 and the auxiliary drain port 1-3 to discharge the overflowed water. After the water pressure of the wash basin or washing table decreases and is less than the elastic force of the first spring piece 5-3-7 and the second spring piece 5-3-8, the overflow seat 4 returns to its original position and closes under the elastic force of the first spring piece 5-3-7 and the second spring piece 5-3-8;

[0022] At the same time, the transmission housing 5-3-1 is integrally arranged on the outer surface of the overflow chamber 4, and the inner wall of the transmission housing 5-3-1 is provided with limit blocks 10 at the upper and lower positions corresponding to the linkage bridge 5-3-5 close to the end of the piston transmission rod 5-3-3, and the inner wall of the transmission housing 5-3-1 is provided with a limit block 11 above the end of the linkage bridge 5-3-5 close to the membrane transmission rod 5-3-2, so as to prevent the transmission mechanism 5-3 from being affected by the external environment, and also to prevent the first spring sheet 5-3-7 and the second spring sheet 5-3-8 from being excessively deformed under the action of water pressure and affecting their service life;

[0023] In addition, an overflow port 12 is formed between the drain plug 2 and the drain outlet, and a filter anti-blocking plug 13 is provided at the drain outlet. The overflow port 12 can ensure that the pressure sensing membrane 5-1 senses the water pressure changes in the basin or washing table in real time, and the filter anti-blocking plug 13 can achieve a water filtering effect. Specific embodiment 2

[0024] like Figure 3-5 As shown, on the basis of specific embodiment 1, the lower end of the dewatering body 5-3-1 is detachably provided with a drainage shell 6, and a main drainage port 7 is opened on the side wall of the drainage shell 5. The main drainage port 7 replaces the water outlet and is connected to the external drainage pipe through a pipe, and the lower end of the drainage cavity 1-1 extends into the drainage shell 6, and the position of the drainage port in the vertical direction is below the main drainage port 7, so that water accumulates in the drainage cavity below the drainage port to prevent the odor in the external drainage pipe from returning to the dewatering device from the main drainage port. In addition, the dewatering body 1 is provided with a pull The pull wire 8 is threadedly connected to the end cover 9 at the bottom end of the drainage shell 6. The pull wire 8 passes through the end cover 9 into the drainage cavity 1-1 and is connected to the downpipe plug 3. The pull wire 8 drives the downpipe plug 3 to open or close the drainage waterway of the overflow port 1-2 and the auxiliary drain port 1-3. Sealing rings are provided between the pull wire 8 and the end cover 9, as well as between the end cover 9 and the dewatering body 1. When draining, the accumulated water is replaced by the drainage in the drainage cavity 1-1 in real time. At the same time, the granular sediment in the drainage can be deposited at the end cover 9. The end cover 9 can achieve the purpose of regularly cleaning the sediment in the drainage cavity.

[0025] Working principle: When using the dewatering device, first connect the drain port of the specific embodiment 1 or the main drain port 8 of the specific embodiment 2 to the external drain pipe through a pipeline, connect the drain port to the wash basin or the washing table, form an overflow port 12 between the drain plug and the drain port, plug the drain plug 3 between the overflow port 1-2 and the auxiliary drain port 1-3 to seal the drainage waterway of the drainage cavity 1-1 when the wash basin or the washing table is filled with water, and then fill the wash basin or the washing table with water, and the water flows first through the drain port and the overflow port 1-2 into the overflow port 12. At the pressure sensing diaphragm 5-1 in the flow cavity 4-3, when the water level in the basin or the washing table gradually rises, the water pressure sensed at the pressure sensing diaphragm 5-1 becomes larger and larger. The pressure sensing diaphragm 5-1 drives the diaphragm transmission rod 5-3-2 under the push of the water pressure, so that the T-shaped lever 5-3-4 rotates around the fulcrum, and the bottom end of the T-shaped lever 5-3-4 presses down one end of the linkage bridge 5-3-5, so that the first spring piece 5-3-7 connected to the linkage bridge 5-3-5 at this end is pressed down by force, and the second spring piece 5-3-7 is pressed down by force. The second spring piece 5-3-8 deforms instantly when reaching the critical value of elastic force, and the linkage bridge 5-3-5 drives the piston transmission rod 5-3-3 to move under the action of the second spring piece 5-3-8, so that the water sealing piston 5-2 leaves the channel opening of the second channel 4-2, opens the water path between the second channel 4-2 and the overflow chamber 4-3, and the overflowing water in the basin or the washing table is discharged through the overflow seat 4; when the water pressure in the basin or the washing table is less than the predetermined value, the pressure sensing membrane 5-1 is connected between the first spring piece 5-3-7 and the second spring piece 5-3- 8 closes the second channel 4-2 to prevent excessive discharge of water in the basin or washing table, thereby achieving an anti-overflow effect for the dewatering device; in addition, when it is necessary to drain all the water in the basin or washing table, the drain plug 3 is turned to open the drainage waterway in the drainage chamber 1-1, and the water can be directly discharged from the drainage waterway in the drainage chamber 1-1, thereby achieving a water discharge effect for the dewatering device; finally, the setting of the drainage chamber 1-1 and the drainage shell 6 can prevent the odor of the external drainage pipe from returning from the main drainage port 7.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drainer with overflow and drainage, comprising a drain body (1), wherein the drain body (1) contains a drainage cavity (1-1), the upper end of the drainage cavity (1-1) is a drain outlet of a wash basin or a washing table, a drain plug (2) is provided at the drain outlet, and the lower end of the drainage cavity (1-1) is a drain outlet, characterized in that: The outer wall of the drainage body (1) is provided with an overflow port (1-2) and an auxiliary drainage port (1-3) which are connected to the drainage cavity (1-1), wherein a water drop plug (3) which can block or open the drainage cavity (1-1) for direct drainage is provided between the overflow port (1-2) and the auxiliary drainage port (1-3), and the water drop plug (3) is linked with the water drop plug (2), and an overflow seat (4) which can be connected to the overflow port (1-2) and the auxiliary drainage port (1-3) is sleeved on the outer wall of the drainage body (1) corresponding to the overflow port (1-2) and the auxiliary drainage port (1-3), and an overflow valve assembly (5) which opens and closes the overflow seat according to the water pressure in the induction basin or the washing table is provided in the overflow seat (4); The overflow seat (4) comprises a first channel (4-1) respectively communicating with the overflow port (1-2), a second channel (4-2) communicating with the auxiliary drain port (1-3), and an overflow chamber (4-3) communicating with the first channel (4-1) and the second channel (4-2); the overflow valve assembly (5) comprises a pressure sensing membrane (5-1) capable of sensing water pressure, a water sealing piston (5-2), and a transmission mechanism for driving the pressure sensing membrane (5-1) and the water sealing piston (5-2) to move in the same direction. (5-3), wherein the pressure sensing membrane (5-1) is arranged at a channel opening corresponding to the first channel (4-1) in the overflow chamber (4-3) to sense the water pressure of the first channel (4-1), the water sealing piston (5-2) is arranged at a channel opening corresponding to the second channel (4-2) in the overflow chamber (4-3) to open and close the second channel (4-2), and the transmission mechanism (5-3) is located outside the overflow chamber (4-3) and is connected to the pressure sensing membrane (5-1) and the water sealing piston (5-2); The transmission mechanism (5-3) comprises a transmission housing (5-3-1), a membrane transmission rod (5-3-2), a piston transmission rod (5-3-3), and also comprises a T-shaped lever (5-3-4), a linkage bridge (5-3-5), a positioning plate (5-3-6), a first spring sheet (5-3-7), and a second spring sheet (5-3-8) arranged in the transmission housing (5-3-1), wherein one end of the piston transmission rod (5-3-3) is connected to the water sealing piston (5-2) in a linkage manner, one end of the membrane transmission rod (5-3-2) is connected to the pressure sensing membrane (5-1) in a linkage manner, and the other end of the membrane transmission rod (5-3-2) is connected to one end of the head of the T-shaped lever (5-3-4) in a linkage manner, and the T-shaped lever (5-3-4) is connected to the water sealing piston (5-2) in a linkage manner. The other end of the part is a fulcrum for rotation, the bottom end of the T-shaped lever (5-3-4) is connected to one end of the linkage bridge (5-3-5), the other end of the linkage bridge (5-3-5) is connected to the other end of the piston transmission rod (5-3-3), and at the same time, the two ends of the first elastic sheet (5-3-7) are respectively connected to the lower surface of the linkage bridge (5-3-5) corresponding to the T-shaped lever (5-3-4) and one end of the positioning plate (5-3-6), the other end of the positioning plate (5-3-6) passes through the linkage bridge (5-3-5), and the two ends of the second elastic sheet (5-3-8) are respectively connected to the other end of the positioning plate (5-3-6) and the upper surface of the linkage bridge (5-3-5) close to the piston transmission rod (5-3-3); When the water surface in the wash basin or the washing table reaches a certain height, that is, reaches a certain water pressure, the pressure sensing membrane (5-1) is pushed open by the water pressure when the predetermined water pressure is reached, and then the water sealing piston (5-2) is driven to move in the same direction with the assistance of the T-shaped lever (5-3-4), the linkage bridge (5-3-5), the first spring sheet (5-3-7), and the second spring sheet (5-3-8), and the overflow seat (4) is connected to the overflow port (1-2) and the auxiliary drainage port (1-3), so that the overflowed water flows through the first channel (4-1) to the overflow chamber (4-3), and then is discharged from the auxiliary drainage port (1-3) through the second channel (4-2); after the water pressure in the wash basin or the washing table decreases and is less than the elastic force of the first spring sheet (5-3-7) and the second spring sheet (5-3-8), the overflow seat (4) returns to its original position under the elastic force of the first spring sheet (5-3-7) and the second spring sheet (5-3-8), and closes.

2. The overflow and drainage integrated dewatering device according to claim 1, characterized in that: The lower end of the drainage body (1) is detachably sleeved with a drainage shell (6), and a main drainage port (7) is formed on the side wall of the drainage shell (6). The main drainage port (7) is connected to an external drainage pipe through a pipe, and the lower end of the drainage cavity (1-1) extends into the drainage shell (6), and the drainage port is located below the main drainage port (7) in the vertical direction. In addition, a pull wire (8) is provided outside the drainage body (1), and an end cap (9) is threadedly connected to the bottom end of the drainage shell (6). The pull wire (8) passes through the end cap (9) into the drainage cavity (1-1) and is linked to the water plug (3).

3. The overflow and drainage integrated dewatering device according to claim 1, characterized in that: The transmission housing (5-3-1) is integrally arranged on the outer surface of the overflow chamber (4-3), and the inner wall of the transmission housing (5-3-1) is provided with limit blocks (10) at the upper and lower positions of the inner wall corresponding to the linkage bridge (5-3-5) close to one end of the piston transmission rod (5-3-3), and the inner wall of the transmission housing (5-3-1) is provided with a limit clamping block (11) above one end of the linkage bridge (5-3-5) close to the membrane transmission rod (5-3-2).

4. The overflow and drainage integrated dewatering device according to claim 3, characterized in that: An overflow port (12) is formed between the drain plug (2) and the drain outlet, and a filtering anti-blocking plug (13) is provided at the drain outlet.

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