Drainage unit of screw vacuum pump

Abstract

The utility model provides a screw vacuum pump drainage unit which comprises a vacuum device and a drainage device, the vacuum device comprises a screw vacuum pump, one end of the top of the screw vacuum pump is provided with a water inlet, the other end of the top of the screw vacuum pump is provided with a drainage port, the water inlet is connected with a first water inlet pipe, and the first water inlet pipe is connected with a vacuum buffer tank. A first water outlet is formed in the top of the vacuum buffer tank, the first water inlet pipe is connected with the first water outlet, one side of the lower portion of the vacuum buffer tank is connected with a drainage device through a buffer pipe, the drainage device comprises a centrifugal self-priming pump, the buffer pipe is connected with the water inlet end of the centrifugal self-priming pump, and the water outlet end of the centrifugal self-priming pump is connected with a drainage tank. The top of the drainage tank is connected with a main drainage pipe, and a drainage port of the screw vacuum pump is connected with the main drainage pipe through a first circulating pipe. When the drainage unit of the screw vacuum pump works, the drainage efficiency can be greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vacuum pump technical field, especially a screw vacuum pump drainage unit. BACKGROUND

[0002] Many earthwork projects need to be dewatered before starting, and dewatering refers to excavating a deep foundation pit in an area with a high underground water level. Due to the cutting of the water-bearing layer, underground water will inevitably seep into the foundation pit under the action of pressure difference. If dewatering work is not performed, the foundation pit will be flooded, the construction conditions will be deteriorated, the bearing capacity of the foundation will be reduced, and phenomena such as quicksand, piping, and slope instability may occur under the action of dynamic water pressure. Therefore, to ensure the safety of foundation pit construction, effective dewatering and drainage measures must be taken.

[0003] The implementation of the dewatering process must be performed with the aid of a dewatering pump. The drainage capacity of the drainage pump of the prior art is small, and the drainage capacity of most drainage pumps on the market is 10-20 m³ per hour. For projects with an urgent construction period, the demand cannot be met, and a drainage pump with a large capacity is urgently needed to improve the efficiency of dewatering construction. SUMMARY

[0004] To solve the above technical problems, the present application provides a screw vacuum pump drainage unit, which is realized by the following technical scheme:

[0005] A screw vacuum pump drainage unit, comprising a vacuum device and a drainage device, wherein the vacuum device comprises a screw vacuum pump, the top of the screw vacuum pump is provided with a water inlet at one end and a drainage port at the other end, the water inlet is connected to a water inlet pipe one, the water inlet pipe one is connected to a vacuum buffer tank, the top of the vacuum buffer tank is provided with a water outlet one, the water inlet pipe one is connected to the water outlet one, the vacuum buffer tank is connected to the drainage device through a buffer pipe at the lower part on one side, the drainage device comprises a centrifugal self-priming pump, the buffer pipe is connected to the water inlet end of the centrifugal self-priming pump, the water outlet end of the centrifugal self-priming pump is connected to a drainage tank, the top of the drainage tank is connected to a drainage main pipe, and the drainage port of the screw vacuum pump is connected to the drainage main pipe through a circulation pipe one.

[0006] The centrifugal self-priming pump is provided with a transmission shaft one, the transmission shaft one is connected to a belt pulley one, the belt pulley one is connected to a belt pulley two through a plurality of belt ones, the belt pulley two is connected to a transmission shaft two, the transmission shaft two is connected to the power output end of a motor, the screw vacuum pump is provided with a transmission shaft three, the transmission shaft three is connected to a belt pulley three, and the belt pulley three is connected to the belt pulley two through a plurality of belt two.

[0007] As a preferred scheme, the upper part on one side of the vacuum buffer tank is provided with a water inlet one, and the water inlet one is connected to a water inlet pipe two.

[0008] As a preferred embodiment, a buffer water tank is connected to one side of the screw vacuum pump, and the buffer water tank is connected to the main drain pipe through a buffer water pipe.

[0009] As a preferred embodiment, the centrifugal self-priming pump is provided with a base at its bottom.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: When the screw vacuum pump drainage unit of this utility model is working, the vacuum device and the drainage device work together. The vacuum device evacuates the drainage device, creating a negative pressure in the vacuum buffer tank, which greatly increases the suction force in the drainage device, thereby increasing the drainage efficiency of the drainage device. The drainage capacity of ordinary drainage devices is 12-20 m³ per hour, while the drainage capacity of this screw vacuum pump drainage unit can reach 300 m³ per hour, which greatly improves the drainage efficiency. Attached Figure Description

[0011] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0012] Figure 1 This is a schematic diagram of the three-dimensional connection structure of this utility model. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0014] A screw vacuum pump drainage unit includes a vacuum device 1 and a drainage device 2. The vacuum device 1 includes a screw vacuum pump 3. The screw vacuum pump 3 has an inlet 31 at one end of its top and a drain outlet 32 ​​at the other end. The inlet 31 is connected to an inlet pipe 33. The inlet pipe 33 is connected to a vacuum buffer tank 4. The top of the vacuum buffer tank 4 has an outlet 41. The inlet pipe 33 is connected to the outlet 41. The lower side of the vacuum buffer tank 4 is connected to the drainage device 2 through a buffer pipe 42. The drainage device 2 includes a centrifugal self-priming pump 5. The buffer pipe 42 is connected to the inlet end of the centrifugal self-priming pump 5. The outlet end of the centrifugal self-priming pump 5 is connected to a drainage tank 6. The top of the drainage tank 6 is connected to a main drainage pipe 61. The drain outlet 32 ​​of the screw vacuum pump 3 is connected to the main drainage pipe 61 through a circulation pipe 34.

[0015] The centrifugal self-priming pump 5 is provided with a drive shaft 51, which is connected to a pulley 52. ​​The pulley 52 is connected to a second pulley 7 via several belts 53. The second pulley 7 is connected to the drive shaft 71. The drive shaft 71 is connected to the power output end of the motor 72. The screw vacuum pump 3 is provided with a drive shaft 35, which is connected to a third pulley 36. The third pulley 36 is connected to the second pulley 7 via several belts 37.

[0016] The power of the machine set during operation is provided by the motor 72.

[0017] Further, the upper side of the vacuum buffer tank 4 is provided with a water inlet 43, and the water inlet 43 is connected with a water inlet pipe 44.

[0018] Further, the side of the screw vacuum pump 3 is connected with a buffer water tank 8, and the buffer water tank 8 is connected with a drainage main pipe 61 through a buffer water pipe 81.

[0019] Further, the bottom of the centrifugal self-priming pump 5 is provided with a base 9.

[0020] During use of the screw vacuum pump drainage machine set, firstly, the screw vacuum pump 3 is started, and the starting of the screw vacuum pump 3 will cause the vacuum buffer tank 4 connected with the screw vacuum pump 3 to be vacuumized, and the vacuum buffer tank 4 is connected with the drainage tank 6 through the centrifugal self-priming pump 5, and the drainage tank 6 is in a negative pressure state at the same time, so that the suction power of the vacuum buffer tank 4 and the drainage tank 6 is greatly improved, the side of the vacuum buffer tank 4 is provided with the water inlet 43, the water inlet 43 is connected with the water inlet pipe 44, the water inlet pipe 44 is connected at a water source place needing to be drained, when the vacuum buffer tank 4 is in a negative pressure state, the water inlet pipe 44 is used to pump water, and the pumped water is sent into the vacuum buffer tank 4, and at the same time, the centrifugal self-priming pump 5 works, the water in the vacuum buffer tank 4 is pumped into the centrifugal self-priming pump 5 through the buffer pipe 42, and then is discharged through the drainage main pipe 61, so that the dewatering of the foundation pit is realized.

[0021] Before the screw vacuum pump drainage machine set works, a small amount of water is added into the buffer water tank 8 and the vacuum buffer tank 4, the water in the buffer water tank 8 is input into the screw vacuum pump 3, as water supply when the screw vacuum pump 3 starts to work, and during the working process, the buffer water tank 8 is connected with the drainage main pipe 61 through the buffer water pipe 81, the water in the drainage main pipe 61 is sent into the buffer water tank 8 through the buffer water pipe 81, the buffer water tank 8 supplies water into the screw vacuum pump 3, the screw vacuum pump 3 is connected with the vacuum buffer tank 4 through the water inlet pipe 1 33, and the screw vacuum pump 3 pumps away the water and gas mixture in the vacuum buffer tank 4 through the water inlet pipe 1 33 when the screw vacuum pump 3 works, the vacuum buffer tank 4 is vacuumized, and the water and gas mixture compressed in the screw vacuum pump 3 is sent into the drainage main pipe 61 through the drainage port 32 and the circulation pipe 1 34, and is discharged through the drainage main pipe 61.

[0022] The arrangement of the vacuum device 1 greatly improves the drainage capacity of the drainage device 2.

[0023] The specific implementation of the utility model is described in detail above, but only as an example, the utility model is not limited to the specific implementation cases described above, and equivalent modifications of the utility model are also within the protection scope of the utility model.

Claims

1. A screw vacuum pump water drainage unit, characterized by, The utility model relates to a kind of water conservancy drainage systems, including vacuum device (1), drainage device (2), the vacuum device (1) includes a screw vacuum pump (3), the screw vacuum pump (3) top one end is equipped with water inlet (31), the other end is equipped with drain (32), the water inlet (31) is connected water pipe one (33), the water pipe one (33) is connected vacuum buffer tank (4), the top of the vacuum buffer tank (4) is equipped with water outlet one (41), the water pipe one (33) is connected water outlet one (41), the lower part of the vacuum buffer tank (4) one side is connected drainage device (2) by buffer pipe (42), the drainage device (2) includes centrifugal self-priming pump (5), the buffer pipe (42) is connected with the water inlet end of centrifugal self-priming pump (5), the water outlet end of centrifugal self-priming pump (5) is connected drain tank (6), the top of the drain tank (6) is connected drain main pipe (61), the drain (32) of the screw vacuum pump (3) is connected drain main pipe (61) by circulation pipe one (34); The centrifugal self-priming pump (5) is equipped with driving shaft one (51), the driving shaft one (51) is connected with belt pulley one (52), the belt pulley one (52) is drivenly connected belt pulley two (7) by several belts one (53), the belt pulley two (7) is connected with driving shaft two (71), the driving shaft two (71) is connected in the power output end of motor (72), the screw vacuum pump (3) is equipped with driving shaft three (35), the driving shaft three (35) is connected with belt pulley three (36), the belt pulley three (36) is drivenly connected belt pulley two (7) by several belts two (37).

2. Screw vacuum pump water draining unit according to claim 1, characterized in that The upper part of the vacuum buffer tank (4) one side is equipped with water inlet one (43), the water inlet one (43) is connected water pipe two (44).

3. Screw vacuum pump water draining unit according to claim 1, characterized in that The screw vacuum pump (3) one side is connected buffer water tank (8), the buffer water tank (8) is connected drain main pipe (61) by buffer water pipe (81).

4. Screw vacuum pump water draining unit according to claim 1, characterized in that The centrifugal self-priming pump (5) bottom is equipped with base (9).

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