Winter anti-freezing drainage device in construction period of inner drainage rainwater pipe

Abstract

The utility model relates to winter drainage equipment for an inner drainage rainwater pipeline of a building during construction, in particular to a winter anti-freezing drainage device for the inner drainage rainwater pipeline during construction, which comprises an execution unit and a control unit. Wherein the execution unit comprises a combined tee joint, an electric execution mechanism and a water bucket, the combined tee joint comprises a valve clack and a three-way pipe, and the three-way pipe is installed on the inner drainage rainwater pipeline; the electric actuating mechanism comprises a shell, a single-phase motor, a 90-degree proximity switch, a 180-degree proximity switch and a coupling baffle, the shell is fixed to one side of the combined tee joint, the single-phase motor, the 90-degree proximity switch and the 180-degree proximity switch are all installed in the shell, the valve clack is connected to a rotating shaft of the single-phase motor, and the coupling baffle is further arranged on the rotating shaft of the single-phase motor. According to the device, when the temperature in a building is below 0 DEG C, molten ice water is drained into a room, and frost crack and damage of the inner rainwater drainage pipeline are effectively avoided.

Description

Technical Field

[0001] The utility model relates to a winter drainage device for the internal drainage rainwater pipe of a building during construction, in particular to a winter anti-freezing drainage device for the internal drainage rainwater pipe during construction. Background Art

[0002] Generally, buildings under construction do not have heating conditions. The internal drainage rainwater pipes of the building are connected to the outside. When the outdoor temperature rises briefly, a small amount of snow on the roof will gradually melt, and the melted ice water will slowly flow into the internal drainage rainwater pipe. Since the indoor temperature is lower than the outdoor temperature, the ice water will gradually freeze during the downward flow. Over time, the ice water will accumulate into ice columns until the pipe is blocked, causing large-area frost heaving damage to the pipe. After the pipe is frozen and cracked, the melted ice water will flow out from the crack of the pipe, causing large-area water damage to the finished decoration, water damage to the unused decoration materials on the ground, water damage to the lamps and smoke detectors in the ceiling, and even causing short circuits in the wires. Although some construction enterprises have taken insulation measures, there is still a phenomenon of freezing and cracking because the overall building under construction does not have effective enclosure and heating measures. Summary of the Invention

[0003] In order to solve the problem that the melted ice water will damage the facilities in the building after the internal drainage rainwater pipe of a building without heating conditions is frozen and cracked, the utility model provides a winter anti-freezing drainage device for the internal drainage rainwater pipe during construction.

[0004] The present utility model is realized by adopting the following technical solutions: A winter anti-freezing drainage device during the construction of an internal rainwater pipe, which includes two parts: an execution unit and a control unit; wherein the execution unit includes a combined three-way, an electric actuator and a water bucket. The combined three-way includes a valve flap and a three-way pipe. The three-way pipe is installed on the internal rainwater pipe. After installation, the horizontal outlet of the three-way pipe serves as the three-way water outlet. The valve flap is inside the three-way pipe and is located below the three-way water outlet. The water bucket is placed on the ground inside the building, and the three-way water outlet faces the water bucket. The electric actuator includes a housing, a single-phase motor, a 90-degree proximity switch, a 180-degree proximity switch and a coupling baffle. The housing is fixed on one side of the combined three-way. The single-phase motor, the 90-degree proximity switch and the 180-degree proximity switch are all installed inside the housing. The valve flap is connected to the rotating shaft of the single-phase motor. A coupling baffle is also provided on the rotating shaft of the single-phase motor. The 90-degree proximity switch and the 180-degree proximity switch are installed at a 90-degree angle with respect to the rotating shaft of the single-phase motor inside the housing, that is, the 180-degree proximity switch is on the horizontal plane and the 90-degree proximity switch is on the vertical plane. The control unit includes an electric control box, an electric contact bimetal thermometer, the normally closed contact of the 180-degree proximity switch, the normally closed contact of the 90-degree proximity switch, a forward winding and a reverse winding. Single-phase alternating current is led out from the electric control box. One end of the single-phase alternating current is connected to the pointer of the electric contact bimetal thermometer. The lower limit contact in the electric contact bimetal thermometer is connected to the other end of the single-phase alternating current through the normally closed contact of the 180-degree proximity switch and the reverse winding. The upper limit contact in the electric contact bimetal thermometer is connected to the other end of the single-phase alternating current through the normally closed contact of the 90-degree proximity switch and the forward winding.

[0005] The temperature values corresponding to the lower limit contact and the upper limit contact in the electric contact bimetal thermometer can be set. When the temperature inside the building reaches and is lower than the temperature corresponding to the lower limit contact, the pointer of the electric contact bimetal thermometer contacts the lower limit contact, and the lower limit contact connects the reverse winding of the single-phase motor. The single-phase motor rotates reversely, and the coupling baffle rotates along with the rotating shaft. When it rotates to 180 degrees (horizontal plane), the coupling baffle touches the 180-degree proximity switch, and the normally closed contact of the 180-degree proximity switch is disconnected by the coupling baffle, and the circuit is cut off. At this time, the valve flap is in a horizontal state, blocking the lower opening of the three-way pipe, and the water flow is led out from the three-way water outlet and flows into the water bucket. When the temperature inside the building reaches and is higher than the temperature corresponding to the upper limit contact, the pointer of the electric contact bimetal thermometer contacts the upper limit contact, and the upper limit contact connects the forward winding. The single-phase motor rotates forward, and the coupling baffle rotates along with the rotating shaft. When it rotates to 90 degrees (vertical plane), the coupling baffle touches the 90-degree proximity switch, and the normally closed contact of the 90-degree proximity switch is disconnected by the coupling baffle, and the circuit is cut off. At this time, the valve flap is in a vertical state, and the three-way pipe is opened, and the water flow flows through the lower opening of the three-way pipe to the outside.

[0006] For the above-mentioned winter anti-freezing drainage device during the construction of an internal rainwater pipe, the valve flap is integrally made with the rotating shaft of the single-phase motor.

[0007] When the temperature in the building is below 0°C, the valve flap rotates to 180 degrees to close the lower opening of the three-way pipe, and the melted ice water is drained into the room. Since the temperature rise is short-lived and the amount of water is small, the lower water receiving bucket can meet the needs. The duty personnel should regularly inspect and clean it to prevent overflow. When the temperature in the building is greater than 5°C, the valve flap opens, and a large amount of melted water will flow into the outdoor along the internal rainwater drainage pipe under the action of gravity flow, effectively avoiding freezing and damage in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic structural diagram of the present invention.

[0009] Figure 2 It is a schematic structural diagram of the execution unit.

[0010] Figure 3 is Figure 2 side view of

[0011] Figure 4 is Figure 2 top view of

[0012] Figure 5 It is a schematic structural diagram of the electric actuator.

[0013] Figure 6 It is a circuit schematic diagram of the control unit.

[0014] In the figure: 1 - combined three-way pipe, 2 - electric actuator, 3 - electric contact bimetal thermometer, 4 - valve flap, 5 - rainwater hopper, 6 - internal rainwater drainage pipe, 7 - water bucket, 8 - parapet wall, 9 - roof, 10 - housing, 11 - three-way water outlet, 12 - thermometer base, 13 - temperature scale line, 14 - electric control box, 15 - single-phase motor, 16 - forward winding, 17 - reverse winding, 18 - control line, 19 - electric contact below 0°C, 20 - electric contact above 5°C, 21 - 90-degree proximity switch, 22 - 180-degree proximity switch, 23 - capacitor, 24 - normally closed contact of 180-degree proximity switch, 25 - normally closed contact of 90-degree proximity switch, 26 - coupling baffle. DETAILED DESCRIPTION OF THE INVENTION

[0015] As shown in the present invention Figure 1 is an electric valve and three-way combined drainage device installed on the internal rainwater drainage pipe 6, and this device is composed of an execution unit and a control unit.

[0016] The execution unit is as shown in Figure 2 , 3 and 4 and 5, and is composed of a combined three-way pipe 1, an electric actuator 2 and a water bucket 7. The drainage function of the three-way water outlet 11 is mainly realized by the opening and closing of the combined three-way pipe 1.

[0017] The combined tee 1 is composed of a valve flap 4 and a tee pipe. The tee pipe is installed on the internal rainwater pipe. The valve flap 4 is inside the tee pipe and is located below the tee water outlet 11. The electric actuator 2 includes a housing 10, a single-phase motor 15, a 90-degree proximity switch 21, a 180-degree proximity switch 22 and a coupling baffle 26. The housing 10 is fixed to one side of the combined three-way valve 1. The single-phase motor 15, the 90-degree proximity switch 21 and the 180-degree proximity switch 22 are all installed in the housing 10. The circular valve flap 4 is made integrally with the rotating shaft of the single-phase motor 15, and the combined three-way valve 1 is opened and closed by rotating forward and reversely with the single-phase motor 15. A coupling baffle 26 is also provided on the rotating shaft of the single-phase motor 15, and the coupling baffle 26 can rotate with the rotating shaft of the single-phase motor 15. The 90-degree proximity switch 21 and the 180-degree proximity switch 22 are installed in the housing at a 90-degree angle with respect to the rotating shaft of the single-phase motor 15. The electric actuator 2 connects the circuit through the electric contact bimetallic thermometer 3, starts the single-phase motor 15, and the single-phase motor 15 switches the 90-degree proximity switch 21 and the 180-degree proximity switch 22 through the coupling baffle 26 to disconnect the circuit.

[0018] Control unit such as Figure 6 As shown in , it consists of an electric control box 14, an electric contact bimetallic thermometer 3, a normally closed contact 24 of a 180-degree proximity switch, a normally closed contact 25 of a 90-degree proximity switch, a forward winding 16, a reverse winding 17 and a power control line 18.

[0019] Single-phase AC is drawn out from the electric control box 14, one end of the single-phase AC is connected to the pointer of the electric contact bimetallic thermometer 3, the electric contact 19 below 0°C (the lower limit contact of the thermometer) in the electric contact bimetallic thermometer 3 is connected to the other end of the single-phase AC through the normally closed contact 24 of the 180-degree proximity switch and the reverse winding 17, and the electric contact 20 above 5°C (the upper limit contact of the thermometer) in the electric contact bimetallic thermometer 3 is connected to the other end of the single-phase AC through the normally closed contact 25 of the 90-degree proximity switch and the forward winding 16.

[0020] When the temperature in the building is below 0℃, the pointer of the electric contact bimetallic thermometer 3 contacts the electric contact 19 below 0℃, and the electric contact 19 below 0℃ connects the reverse winding 17, the single-phase motor 15 rotates in the opposite direction, and the coupling baffle 26 rotates with the shaft. When it rotates to 180 degrees, the coupling baffle 26 touches the 180-degree proximity switch 22, and the normally closed contact 24 of the 180-degree proximity switch is disconnected by the coupling baffle 26, the circuit is cut off, the valve disc 4 is horizontal, blocking the lower end of the three-way pipe, and the water flows out from the three-way outlet 11 and flows to the bucket 7.

[0021] ​When the temperature inside the building is above 5°C, the pointer of the electric contact bimetal thermometer 3 contacts the electric contact 20 above 5°C. The electric contact 20 above 5°C closes the forward winding 16, and the single-phase motor 15 rotates forward. The coupling baffle 26 rotates along with the rotating shaft. When it rotates to 90°, the coupling baffle 26 touches the 90-degree proximity switch 21. The normally closed contact 25 of the 90-degree proximity switch is disconnected by the coupling baffle 26, the circuit is cut off, the valve flap 4 is in a vertical state, the three-way pipe opens, and the water flows through the lower opening directly below the three-way pipe to the outside.

Claims

1. A winter antifreeze drainage device for internal rainwater pipe construction, characterized in that: The invention comprises an execution unit and a control unit; wherein the execution unit comprises a combined three-way valve (1), an electric actuator (2) and a bucket (7); the combined three-way valve (1) comprises a valve flap (4) and a three-way pipe, the three-way pipe is installed on the internal rainwater discharge pipe, the valve flap (4) is in the three-way pipe and is located below the three-way water outlet (11); the electric actuator (2) comprises a housing (10), a single-phase motor (15), a 90-degree proximity switch (21), a 180-degree proximity switch (22) and a coupling baffle (26); the housing (10) is fixed to one side of the combined three-way valve (1), the single-phase motor (15), the 90-degree proximity switch (21) and the 180-degree proximity switch (22) are all installed in the housing (10), the valve flap (4) is connected to the rotating shaft of the single-phase motor (15), and the rotating shaft of the single-phase motor (15) is also provided with a coupling baffle (26); the 90 The 180-degree proximity switch (21) and the 180-degree proximity switch (22) are installed in the housing at an angle of 90 degrees with respect to the rotating shaft of the single-phase motor (15); the control unit comprises an electric control box (14), an electric contact bimetallic thermometer (3), a normally closed contact (24) of the 180-degree proximity switch, a normally closed contact (25) of the 90-degree proximity switch, a forward winding (16) and a reverse winding (17); a single-phase alternating current is drawn out of the electric control box (14); one end of the single-phase alternating current is connected to a pointer of the electric contact bimetallic thermometer (3); a lower limit contact in the electric contact bimetallic thermometer (3) is connected to the other end of the single-phase alternating current through the normally closed contact (24) of the 180-degree proximity switch and the reverse winding (17); and an upper limit contact in the electric contact bimetallic thermometer (3) is connected to the other end of the single-phase alternating current through the normally closed contact (25) of the 90-degree proximity switch and the forward winding (16).

2. The antifreeze drainage device for internal rainwater pipes during construction in winter according to claim 1, characterized in that: The valve flap (4) and the rotating shaft of the single-phase motor (15) are manufactured in one piece.

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