CN205435281U - Gaseous recoil type filter equipment - Google Patents

Abstract

The utility model discloses a gas recoil type filter device, which comprises a tank body, which is arranged in the tank body and divides the inner chamber of the tank body into a filter part of a muddy water chamber and a clean water chamber, and a filter part that communicates with the muddy water chamber And the water inlet pipe and the sewage pipe of the water inlet valve and the sewage valve are respectively arranged on it, the water outlet pipe connected with the described clean water chamber, and the water supply branch and the ventilation branch connected to the water outlet pipe, the described A check valve and an air intake valve are arranged on the ventilation branch and communicated with a high-pressure air source, and a water outlet valve is arranged on the water supply branch. Compared with conventional backwash filters, the structural design of the gas backwash filter of the utility model greatly improves the use efficiency of filtration. And less water wastage. Especially for aerosol dust suppression, the air source access is more convenient and the convenience of use is improved. The drain pipe is connected to the T-shaped pipe, and the valves are connected by flanges, which is convenient for maintenance and easy to assemble and disassemble.

Description

Gas recoil type filter device

technical field

The utility model relates to the technical field of water purification, in particular to a gas recoil filter device.

Background technique

The filter is an indispensable device for the aerosol dust suppression system. The filter is usually installed near the water source in the entire aerosol dust suppression system to filter impurities in the water to meet the water quality requirements in the dust suppression system. After being used for a period of time, the filter screen will be blocked, and it needs to be backwashed, but now the mainstream backwashing filter generally controls the water flow direction through the pressure difference to perform backwashing. However, this method has no effect on the impurities sticking to the filter screen. Over time, the impurities continue to accumulate, blocking the filter screen or penetrating the filter screen, thus affecting the use of the dust suppression system. It can only be solved by replacing the filter screen. The increase in manpower and material resources not only increases the cost, but also affects work efficiency.

Utility model content

The purpose of the utility model is to provide a gas recoil filter device aiming at the technical defects existing in the prior art.

The technical scheme adopted for realizing the purpose of this utility model is:

A gas recoil type filter device, comprising a tank body, which is arranged in the tank body and divides the inner chamber of the tank body into a filter part of a muddy water chamber and a clean water chamber, and is connected with the muddy water chamber and is respectively arranged on it The water inlet pipe and the sewage pipe with the water inlet valve and the sewage valve, the water outlet pipe connected with the clear water chamber, and the water supply branch and the ventilation branch connected to the water outlet pipe, the ventilation branch is provided with There is a check valve, an air inlet valve and is connected with a high-pressure air source, and a water outlet valve is arranged on the water supply branch.

The air intake valve, water intake valve, drain valve and sewage discharge valve are all electric valves and are controllably connected with the controller respectively.

A pressure gauge is arranged on the ventilation branch or the water outlet pipe.

The filter part includes a connecting cylinder that can be matchedly sleeved in the tank body, a connecting flange formed at one end of the connecting cylinder and corresponding to the opening end of the tank body, fixedly arranged on the plane of the other end of the connecting cylinder body Type filter.

A connecting edge is formed on the circumference of the filter screen, an inner ring edge is formed on the opposite end of the cylinder body and the filter screen, and the connecting edge is bolted or welded to the inner ring edge.

The tank body is set up and down, the upper end of the tank body is provided with an upper cover plate with a water outlet hole formed in the center, the drain pipe is fixedly connected or integrally formed with the upper cover plate, and the upper cover plate The plate is fixedly connected with the upper end of the tank body and clamps and positions the connecting flange, and a gasket is arranged therebetween to keep the seal.

The lower end of the tank body is tapered, and the tapered portion is connected to the flange of the sewage pipe.

The filter screen is composed of an upper filter screen, a lower filter screen and a support net fixed in the middle. The support net is in the shape of spokes or grids to strengthen the overall strength of the filter screen. The lower filter screen and the upper layer The strainer is a finely woven mesh.

Compared with the prior art, the beneficial effects of the utility model are:

Compared with conventional backwash filters, the structural design of the gas backwash filter of the utility model greatly improves the use efficiency of filtration. And less water wastage. Especially for aerosol dust suppression, the air source access is more convenient and the convenience of use is improved. The connection between the drain pipe and the T-shaped pipe and the connection of each valve is flanged, which is convenient for maintenance and easy to assemble and disassemble. In actual work, the incidence of problems affecting work efficiency is reduced.

Description of drawings

Fig. 1 shows the perspective structure schematic diagram of the gas recoil type filtering device of the present utility model;

Figure 2 is a schematic diagram of the structure of the filter screen.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1-2, the gas recoil filter device of the present utility model includes a controller and a tank body 1, which is arranged in the tank body and divides the inner cavity of the tank body into a filter part 2 of a muddy water chamber and a clean water chamber, and is connected with the tank body. The water inlet pipe 10 and the sewage pipe 14 that are connected to the muddy water chamber and are respectively provided with the water inlet valve 5 and the sewage valve 6, and the water outlet pipe 7 that is communicated with the clean water chamber, and the water outlet pipe 7 is connected to the water supply The branch 9 and the ventilating branch 8 are connected in parallel, and the ventilating branch is provided with a check valve (not shown in the figure) to prevent the water from entering the ventilating branch before the gas recoil, and to control the on-off of the ventilating. The air intake valve 11 is also connected with the high-pressure air source, and the water supply branch road is provided with a water outlet valve 12, wherein the air intake valve, the water inlet valve, the drain valve and the sewage valve are all electric valves and are respectively connected with the described The controller is controllably connected, and at the same time, a pressure gauge 13 is provided on the front end of the ventilation branch or the water outlet pipe or the water outlet valve of the water supply branch, and the pressure gauge is used to measure the air supply pressure and water supply pressure at the same time. Ensure backwash and water supply pressures are measurable. Wherein, the water supply branch and the ventilation branch can be the left and right parts of the T-shaped pipe whose middle part communicates with the drainage pipe, or they can be set in a side-connected three-way pipe.

In the filter of the utility model, the water flow enters the dirty water chamber from the water inlet pipe and then enters the clean water chamber after passing through the filter part, and finally the clean water is sent from the water outlet pipe through the water supply branch to each terminal of the dust suppression system for spraying. When filtering is required, close the water supply valve on the water supply branch and the water inlet valve on the water inlet pipe at the same time, and open the air inlet valve on the ventilation branch. At this time, the high-pressure gas enters the tank from the drain pipe and is continuously pressurized. When the pressure is certain, the drain valve is opened, and the water flows out of the tank instantly, taking away the impurities on the filter, and then realizes backwashing. Moreover, according to the Venturi principle, when the water vapor is fully mixed, it will boil on the surface of the filter screen, and the filter impurities can be quickly washed up and discharged from the sewage pipe to complete the cleaning work. Compared with conventional backwash filters, the structural design of gas backwash filters greatly improves the efficiency of filtration. And less water wastage. Especially for aerosol dust suppression, it is more convenient to access the air source.

Specifically, as shown in FIG. 2, the filter part 2 includes a connecting cylinder 21 that can be matchedly sleeved in the tank body, and a connecting flange formed at one end of the connecting cylinder and corresponding to the open end of the tank body. 22. The plane filter screen 23 fixedly arranged at the other end of the connecting cylinder adopts the form of a filter screen installed at the bottom. In the same working environment, the filter effect is good, the clogging rate is low, and the service life of the filter screen can also be improved.

Preferably, the tank body is set up and down, the upper end of the tank body is provided with an upper cover plate 15 with a water outlet hole formed in the center, and the drain pipe is fixedly connected or integrally formed with the upper cover plate. The above-mentioned upper cover plate is fixedly connected with the upper end of the tank body, and the above-mentioned connecting flange is clamped and positioned, and a gasket is arranged therebetween to ensure the sealing. The filter part is installed vertically and the filter screen is set horizontally to effectively prevent the accumulation of impurities, and when the gas backwashing is performed, the filter screen is washed evenly to ensure the backwashing effect.

As a preferred solution, a connecting edge is formed on the circumference of the filter screen, and an inner ring edge is formed at the opposite end of the cylinder body and the filter screen, and the connecting edge is connected with the inner ring edge by bolts, and the bolts The connection can improve the replaceability of the filter screen and reduce the cost of use.

As a specific embodiment, the filter screen is composed of an upper filter screen, a lower filter screen and a support net in the middle. The support net is in the form of spokes or grids, which has larger pores and strength to strengthen The overall strength of the filter screen, meanwhile, the lower filter screen and the upper filter screen are finely woven mesh, such as 150 mesh or 200 mesh, etc., preferably, the upper filter screen and the lower filter screen are set by filtering step by step to improve the filtering effect At the same time, reduce the occurrence of clogging.

Specifically, the lower end of the tank body is formed with a tapered portion, and the tapered portion is connected to the flange of the sewage pipe. At the same time, the connection between the drainage pipe and the ventilation branch, the water supply branch, or the T-shaped pipe, and the connection between the valves are all flanged, which is convenient for maintenance and easy to assemble and disassemble. The incidence of the problem.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these Improvement and retouching should also be regarded as the protection scope of the present utility model.

Claims (8)

1. A gas recoil filter device, characterized in that it comprises a tank body, is arranged in the tank body and divides the inner chamber of the tank body into a filter portion of a muddy water chamber and a clear water chamber, and communicates with the muddy water chamber The water inlet pipe and the sewage pipe respectively provided with the water inlet valve and the sewage valve, the water outlet pipe connected with the clean water chamber, and the water supply branch and the ventilation branch connected to the water outlet pipe. The ventilation branch is provided with a check valve and an air intake valve and communicated with a high-pressure air source, and the water supply branch is provided with a water outlet valve. 2 . The gas recoil filter device according to claim 1 , wherein the air inlet valve, water inlet valve, drain valve and sewage valve are all electric valves and are controllably connected to the controller respectively. 3 . 3. The gas recoil filter device according to claim 1, characterized in that a pressure gauge is arranged on the ventilation branch or the water outlet pipe. 4. The gas recoil filter device according to claim 1, characterized in that, the filter part includes a connecting cylinder that can be matched and sleeved in the tank body, formed at one end of the connecting cylinder and connected to the tank body The connecting flange corresponding to the open end of the cylinder is fixedly arranged on the flat filter screen at the other end of the connecting cylinder. 5. The gas recoil filter device according to claim 4, wherein a connection edge is formed on the periphery of the filter screen, an inner ring edge is formed on the opposite end of the cylinder and the filter screen, and the filter screen is formed with an inner ring edge. The connecting edge of the inner ring is bolted or welded to the inner ring edge. 6. The gas recoil type filter device as claimed in claim 4, wherein the tank body is arranged up and down, and the upper end of the tank body is provided with an upper cover plate with a water outlet hole formed in the center thereof, and the The water outlet pipe is fixedly connected or integrally formed with the upper cover plate, and the upper cover plate is fixedly connected with the upper end of the tank body and clamps and positions the connecting flange with a gasket provided therebetween to keep the seal. 7 . The gas recoil filter device according to claim 1 , wherein the lower end of the tank body is conical, and the conical portion is connected to the flange of the sewage pipe. 8 . 8. The gas recoil filter device according to claim 4, wherein the filter screen is composed of an upper filter screen, a lower filter screen and a support net fixed in the middle, and the support net is in the form of spokes. Type or grid shape to strengthen the overall strength of the filter screen, the lower filter screen and the upper filter screen are finely woven.