CN217300890U

CN217300890U - External circulating water filtering and purifying device for coal mine ground gas drainage pump station

Info

Publication number: CN217300890U
Application number: CN202221329465.8U
Authority: CN
Inventors: 赵庆卫; 李克相; 刘自兵; 马明凯
Original assignee: Huaneng Yunnan Diandong Energy Co Ltd
Current assignee: Huaneng Yunnan Diandong Energy Co Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-08-26
Anticipated expiration: 2032-05-31

Abstract

The utility model discloses a colliery ground gas drainage pump station is with external circulating water filtration purification device, including setting up in quartz sand filter and the water pump of circulating water low water level pond one side, be provided with quartz sand in the quartz sand filter and filter the filter core, quartz sand filter upper portion outer wall is provided with the water inlet, and quartz sand filter lower part outer wall is provided with the delivery port, and the end of intaking of water pump is through the inside intercommunication of pipe and circulating water low water level pond that absorbs water, and the delivery port of water pump passes through the water inlet intercommunication of conveyer pipe and quartz sand filter. The utility model has the characteristics of control is simple reliable, and application scope is wide, both can be used to old ground gas drainage pump station circulating water system's transformation, also can be arranged in the earlier stage design and the construction of newly-built ground gas pump station, can carry out normal circulating water and purify and carry out the backwash to the filter, impurity in the discharge filter can maintain the operating condition of filter, prolongs whole outside circulating water filtration purification device's life.

Description

External circulating water filtering and purifying device for coal mine ground gas drainage pump station

Technical Field

The utility model relates to a gas drainage technical field especially relates to a colliery ground gas drainage pump station is with external circulating water filtration purification device.

Background

At present, a well-known coal mine ground gas drainage pump station circulating water system is composed of a water supplementing water source, a low-level water tank, a circulating water pump, a high-level water tank, a cooling tower and corresponding water inlet and outlet pipelines. As shown in fig. 1, the operation of the known water circulation system is as follows: the circulating water pump lifts water from the low-level water tank to the cooling tower, and water flows into the upper-level water tank after being cooled by air of the cooling tower. The upper water tank conveys water to a water circulation gas pump by utilizing water pressure formed by natural fall, and the circulated water enters the lower water tank through a drain pipe to form a closed-loop water circulation system. The lost part caused by leakage, evaporation and the like in the circulation process is periodically supplemented by a water supplementing source.

However, with the continuous operation of the circulating water system, coal slag is inevitably brought into the circulating water system through a gas extraction pipeline, and particulate matters are inevitably brought into a water supplementing source. In the past, the deposited particulate pollution of the circulating water system can be more and more serious, and silt of each branch pipeline of the system is deposited or even blocked until the normal operation of the water circulation gas pump is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the outside circulating water filtration purification device for coal mine ground gas drainage pump station that proposes adds one set of circulating water filtration purification device in the low level pond outside for whole circulating water system's quality of water purifies.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an external circulating water filtering and purifying device for a coal mine ground gas drainage pump station comprises a quartz sand filter and a water pump, wherein the quartz sand filter and the water pump are arranged on one side of a circulating water low-level pool;

the water outlet of the quartz sand filter is connected with a purified water discharge pipe, and a purified water discharge control valve is installed on the purified water discharge pipe;

a blow-off pipe is communicated with the rear part of the conveying pipe, and a blow-off control valve is arranged on the blow-off pipe;

the front part of the conveying pipe is communicated with a flushing pipe, a flushing control valve is arranged on the flushing pipe, and the other end of the flushing pipe is communicated with a purified water discharge pipe.

The beneficial effects of the utility model are that:

1. the utility model provides an external circulating water filtration purification device has the characteristics of simple and reliable control, wide application range, can be used for the transformation of the circulating water system of the old ground gas drainage pump station, can also be used for the early design and construction of a newly-built ground gas pump station, can not change any physical parameter of the original gas pump circulating water system because of the addition of a water purification device, and has the remarkable characteristics of good applicability and high reliability;

2. the utility model provides an external circulating water filtration purification device is provided with two sets of control flap that mutually support the work, through the on-off state that changes two sets of control flap, can carry out normal circulating water and purify and carry out the backwash to the filter, and the operating condition of filter can be maintained to impurity in the discharge filter, prolongs whole external circulating water filtration purification device's life.

Drawings

FIG. 1 is a schematic diagram of a water circulation system according to the prior art;

fig. 2 is the utility model provides a coal mine ground gas drainage pump station is with external circulating water filtration purification device's schematic structure.

In the figure: 1 circulating water low water level pool, 2 quartz sand filter, 3 water pump, 4 water suction pipe, 5 delivery pipe, 6 water inlet control valve, 7 flushing control valve, 8 purified water discharge pipe, 9 purified water discharge control valve, 10 blow-off pipe, 11 blow-off control valve, 12 flushing pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Embodiment 1, refer to fig. 2, an external circulating water filtering and purifying device for a coal mine ground gas drainage pump station, which is additionally installed on one side of a circulating water low-level pool 1 in the prior art (as shown in fig. 1) and can directly modify the existing circulating water device, the external circulating water filtering and purifying device is composed of a quartz sand filter 2, a water pump 3, a water suction pipe 4, a delivery pipe 5, a water inlet control valve 6, a flushing control valve 7, a purified water discharge pipe 8, a purified water discharge control valve 9, a sewage discharge pipe 10, a sewage discharge control valve 11 and a flushing pipe 12,

a quartz sand filter element is arranged in the quartz sand filter 2, a water inlet is arranged on the outer wall of the upper part of the quartz sand filter 2, a water outlet is arranged on the outer wall of the lower part of the quartz sand filter 2, the water inlet end of the water pump 3 is communicated with the inside of the circulating water low level pool 1 through a water suction pipe 4, the water outlet end of the water pump 3 is communicated with the water inlet of the quartz sand filter 2 through a conveying pipe 5, a water inlet control valve 6 is arranged on the conveying pipe 5, when the water circulating low level pool is used, the water pump 3 is started, the water inlet control valve 6 and a purified water discharge control valve 9 are opened, and a flushing control valve 7 and a pollution discharge control valve 11 are closed, at the moment, the water pump 3 pumps the sewage in the circulating water low level pool 1 into the quartz sand filter 2 through the water inlet of the quartz sand filter 2, and after filtration, the purified water flows back to the circulating water low level pool 1 through the water outlet of the purified water discharge pipe 8 through the quartz sand filter 2;

the water outlet of the quartz sand filter 2 is connected with a purified water discharge pipe 8, the purified water discharge pipe 8 is provided with a purified water discharge control valve 9, the rear part of the delivery pipe 5 is communicated with a sewage discharge pipe 10, the sewage discharge control valve 11 is arranged on the sewage discharge pipe 10, the front part of the delivery pipe 5 is communicated with a flushing pipe 12, the flushing pipe 12 is provided with a flushing control valve 7, the other end of the flushing pipe 12 is communicated with the purified water discharge pipe 8, when the impurities intercepted in the quartz sand filter 2 need to be reversely flushed and discharged, the water pump 3 is started, the flushing control valve 7 and the sewage discharge control valve 11 are opened, the water inlet control valve 6 and the purified water discharge control valve 9 are closed, at the moment, the water pump 3 pumps the sewage in the circulating water low water level pool 1 into the quartz sand filter 2 through the water outlet of the quartz sand filter 2 to reversely flush the filter element of the quartz sand filter 2, the impurities flow out from the water inlet of the quartz sand filter 2 and are discharged by the sewage discharge pipe 10.

The working principle is as follows: the working process of the external circulating water filtering and purifying device provided by the utility model comprises a water purifying state and a back flushing state;

opening a water inlet control valve 6 and a purified water discharge control valve 9, closing a flushing control valve 7 and a pollution discharge control valve 11, and starting a water pump 3, wherein in the state, the water pump 3 pumps the sewage in the circulating water low water level tank 1 into a quartz sand filter 2 through a water inlet of the quartz sand filter 2, and after filtration, the purified water flows back to the circulating water low water level tank 1 through a purified water discharge pipe 8 through a water outlet of the quartz sand filter 2;

a back flushing state: and opening a water inlet control valve 6 and a purified water discharge control valve 9, closing a flushing control valve 7 and a pollution discharge control valve 11, starting a water pump 3, pumping the sewage in the circulating water low level pool 1 into a quartz sand filter 2 through a water inlet of the quartz sand filter 2 by the water pump 3 in the state, and after filtering, enabling the purified water to flow back to the circulating water low level pool 1 through a purified water discharge pipe 8 through a water outlet of the quartz sand filter 2.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The external circulating water filtering and purifying device for the coal mine ground gas drainage pump station comprises a quartz sand filter (2) and a water pump (3) which are arranged on one side of a circulating water low water level pool (1), wherein a quartz sand filtering filter element is arranged in the quartz sand filter (2), a water inlet is formed in the outer wall of the upper part of the quartz sand filter (2), and a water outlet is formed in the outer wall of the lower part of the quartz sand filter (2), and is characterized in that the water inlet end of the water pump (3) is communicated with the inside of the circulating water low water level pool (1) through a water suction pipe (4), the water outlet end of the water pump (3) is communicated with the water inlet of the quartz sand filter (2) through a conveying pipe (5), and a water inlet control valve (6) is arranged on the conveying pipe (5);

the water outlet of the quartz sand filter (2) is connected with a purified water discharge pipe (8), and a purified water discharge control valve (9) is arranged on the purified water discharge pipe (8);

a sewage discharge pipe (10) is communicated with the rear part of the conveying pipe (5), and a sewage discharge control valve (11) is arranged on the sewage discharge pipe (10);

the front part of the conveying pipe (5) is communicated with a flushing pipe (12), a flushing control valve (7) is installed on the flushing pipe (12), and the other end of the flushing pipe (12) is communicated with a purified water discharge pipe (8).