CN104436848B - Eddy flow Double filter gauze type silt filter - Google Patents

Abstract

The invention relates to the technical field of irrigation equipment in agricultural water and soil engineering, in particular to a swirling double filter screen type sediment filter. It is characterized in that it includes an outer tank body, the lower part of which is provided with a sand collection tank, and the outer tank body is divided into two cavities through an S-shaped water baffle, and the two cavities are respectively equipped with a fine filter and a coarse filter. The lower part of the fine filter and the coarse filter are connected by a diversion pipe, the upper part of the fine filter and the coarse filter are respectively provided with a fine filter cover and a coarse filter cover, and the upper part of the outer tank is also provided with a tank cover and a vent valve. and the outlet pipe, the lower part of the outer tank body is also provided with a drain hole, and the lower part of the diversion pipe is also provided with a sand discharge pipe leading out of the outer tank body; Water switch, check valve and water pipe flange; the bottom of the sand collection tank is provided with a sand discharge hole, and the upper part of the sand collection tank is an observation window. The utility model has the advantages of compact structure, reasonable setting, strong and durable filter screen, small floor space, convenient operation and high efficiency, which is conducive to popularization and use.

Description

Cyclone double screen sediment filter

technical field

The invention relates to the technical field of irrigation equipment in agricultural water and soil engineering, in particular to a swirling double filter screen type sediment filter.

Background technique

At present, with the continuous development of water-saving agriculture, water-saving irrigation methods such as sprinkler irrigation and seepage irrigation have emerged as the times require, and these irrigation methods have higher requirements for water quality, especially for the size and content of solid particles in the water body. Requirements, while ordinary irrigation is generally river water or channel water, which contains more sediment. Therefore, efficient, safe and reliable sediment filtration equipment has become an important part of it. In the existing sediment filtration equipment, the centrifugation and filtration are in different tanks, and the connection part is bulky and cumbersome, making the structure complex and increasing the head loss of filtration; There are some defects in the filter device, the blockage of the filter screen is unknown, the location of the water inlet and the layout of the filter screen are not reasonable, and the water flow and sediment with large kinetic energy may directly or indirectly impact the filter screen, resulting in deformation of the filter screen and failure to make the sediment After a good deposition, it is filtered, and some of the filter equipment are connected together with coarse and fine screens, which makes the filtering effect not good.

Contents of the invention

The purpose of the present invention is to avoid the defects of the prior art such as low sediment filtration efficiency, unpredictable filter blockage, complex structure of the filter device, large volume, inconvenient operation, etc., and provide a swirl double filter screen type sediment filter The device detects the clogging condition of the filter screen through the pressure sensor, has strong impact resistance of the filter screen, is convenient for maintenance and operation, and combines the hydrocyclone with the filter screen, effectively solving the problems existing in the prior art.

In order to achieve the above object, the technical solution adopted by the present invention is: the cyclone double screen type sediment filter is characterized in that it comprises an outer tank body, the lower part of the outer tank body is provided with a sand collecting tank, and the outer tank body The body is divided into two cavities by the S-shaped water baffle. The fine filter and the coarse filter are respectively set in the two cavities. The lower part of the fine filter and the coarse filter are connected by a diversion tube, and the fine filter and the coarse filter The upper part of the outer tank body is also provided with a tank body cover, a vent valve and a water outlet pipe, the lower part of the outer tank body is also provided with a drain hole, and the lower part of the draft pipe is also provided with a lead-out The sand discharge pipe of the outer tank body; the water inlet pipe is connected with the outer tank body, and the water inlet pipe is provided with a trash rack, a water inlet switch, a check valve and a water pipe flange in sequence; the bottom of the sand collection tank is provided with a sand discharge hole , The side of the sand collection tank is an observation window.

The fine filter screen and the coarse filter screen are separated by an S-shaped baffle and distributed symmetrically in the center. A first pressure sensor is arranged in the outer tank cavity on the side where the coarse filter screen is located, and the first pressure sensor is arranged in the coarse The outside of the filter screen is connected with the tank cover, and a second pressure sensor is arranged in the outer tank cavity on the side where the fine filter screen is located. The second pressure sensor is arranged in the fine filter screen and connected with the fine filter screen cover. The fine filter screen and The coarse filter screen is smoothly connected through the diversion pipe, a fine filter screen support is arranged between the fine filter screen and the diversion pipe, and a coarse filter screen support is arranged between the coarse filter screen and the diversion pipe.

The fine strainer and the coarse strainer are respectively fixed on the outer tank in a spiral form through the upper fine strainer cover and the coarse strainer cover, the fine strainer and the coarse strainer are cylindrical, and the fine strainer There are sealing rubber rings on the top of the mesh and coarse filter and the top of the S-shaped baffle.

The observation window on the upper part of the sand collection tank is a strip-shaped sediment deposition observation window; the sand collection tank and the outer tank body are connected by flanges, and the sand collection tank communicates with the inner cavity of the coarse filter.

The upper part of the outer tank has a cylindrical structure, and the lower part of the outer tank has a conical structure; the sand collection tank has a quasi-ellipsoid structure; the tank cover is connected to the outer tank through a flange.

The first pressure sensor and the second pressure sensor are connected to the single-chip microcomputer through the A/D conversion circuit, the first pressure sensor and the second pressure sensor are controlled by the single-chip microcomputer, and the periphery of the single-chip microcomputer is also provided with a power supply module, a data cache module, and a keyboard circuit module , clock circuit module, alarm circuit module, interface circuit module and LCD display screen, the single-chip microcomputer is connected with the water supply switch through the amplification circuit module, and the analog signals detected by the first pressure sensor and the second pressure sensor are converted into the single-chip microcomputer through the A/D conversion circuit Recognizable digital signals, and then control the alarm circuit and water supply circuit.

The beneficial effects of the present invention are: the cyclone double-screen sediment filter realizes hydrocyclone and double-stage fine filtration, and improves filtration efficiency; the set pressure sensor is controlled by a single-chip microcomputer, which can detect the thickness For the clogging of the filter screen, when the sediment of any filter screen reaches the set threshold, it will alarm and cut off the water supply power, which can prevent the filter screen from being damaged due to excessive internal pressure of the tank cavity, and can also improve the sediment filtration efficiency; The sediment deposition observation window can observe the deposition of sediment; the inlet pipe is equipped with trash rack, inlet switch, check valve and flange, and the upper part of the tank cover is equipped with a vent valve, which makes the filter safe and reliable , stable operation, and the filter device is compact in structure, reasonable in setting, durable in filter, small in floor space, easy to operate, and conducive to popularization and use.

Description of drawings

Fig. 1 is the structural principle schematic diagram of the present invention;

Fig. 2 is the schematic diagram of the sectional structure principle at the C-C place of Fig. 1 of the present invention;

Fig. 3 is the overall axonometric structure schematic diagram of the present invention;

Fig. 4 is the schematic diagram of the sectional structure principle at B-B place of Fig. 2 of the present invention;

Fig. 5 is a schematic diagram of the principle of the main control circuit of the present invention;

Fig. 6 is a control flow chart of the main program of the present invention.

As shown in the figure: 1. water inlet pipe, 2. trash rack, 3. water inlet switch, 4. check valve, 5. water pipe flange, 6. outer tank body, 7. fine filter, 8. fine filter Mesh cover, 9. The second pressure sensor, 10. S-type water baffle, 11. Coarse filter cover, 12. Breathing valve, 13. Outlet pipe, 14. Coarse filter, 15. Coarse filter bracket, 16. Diversion pipe, 17. sand collection tank, 18. sand discharge hole, 19. observation window, 20. sand discharge pipe, 21. fine filter screen support, 22. first pressure sensor, 23. tank body cover, 24. discharge water hole.

detailed description

The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

As shown in Figures 1 to 4, the cyclone double screen type sediment filter is characterized in that it includes an outer tank body 6, the lower part of the outer tank body 6 is provided with a sand collection tank 17, and the outer tank body 6 The inside is divided into two cavities by the S-shaped water baffle 10, and the fine filter screen 7 and the coarse filter screen 14 are respectively arranged correspondingly in the two cavities. Filter screen 7 and coarse filter screen 14 tops are provided with fine filter screen cover 8 and coarse filter screen cover 11 respectively, and outer tank body 6 tops are also provided with tank body cover 23, vent valve 12 and outlet pipe 13, outer tank body 6 bottoms Also be provided with drain hole 24, guide pipe 16 bottoms are also provided with the sand discharge pipe 20 that draws outer tank body 6; Water switch 3, check valve 4 and water pipe flange 5; the bottom of the sand collection tank 17 is provided with a sand discharge hole 18, and the upper part of the sand collection tank 17 is an observation window 19.

Further, the fine filter screen 7 and the coarse filter screen 14 are separated by the S-shaped baffle 10 and distributed symmetrically in the center, and a first pressure sensor is arranged in the cavity of the outer tank body 6 on the side where the coarse filter screen 14 is located. 22. The first pressure sensor 22 is set outside the coarse filter 14 and connected to the tank cover 23, and the second pressure sensor 9 is set in the cavity of the outer tank 6 on the side where the fine filter 7 is located, and the second pressure sensor 9 is set In the fine filter screen 7 and connected with the fine filter screen cover 8, the fine filter screen 7 and the coarse filter screen 14 are connected smoothly through the guide tube 16, and a fine filter screen support 21 is arranged between the fine filter screen 7 and the guide tube 16 , A coarse filter screen support 15 is arranged between the coarse filter screen 14 and the guide pipe 16 .

Further, the fine strainer 7 and the coarse strainer 14 are fixed on the outer tank body 6 in a spiral form through the upper fine strainer cover 8 and the coarse strainer cover 11 respectively, and the fine strainer 7 and the coarse strainer 14 is a cylinder, and the fine filter screen 7 and the coarse filter screen 14 and the top of the S-type water baffle 10 are all provided with sealing rubber rings.

Further, the observation window 19 on the upper part of the sand collection tank 17 is a strip-shaped sediment deposition observation window; the sand collection tank 17 and the outer tank body 6 are connected by flanges, and the sand collection tank 17 is connected to the inner cavity of the coarse filter screen 14 Pass.

Further, the upper part of the outer tank body 6 has a cylindrical structure, and the lower part of the outer tank body 6 has a conical structure; the described sand collection tank 17 has a quasi-ellipsoid structure; the described tank body cover 23 is passed through the flange Link to the outer tank body 6.

Further, as shown in Figure 5, the first pressure sensor and the second pressure sensor are connected to the single-chip microcomputer through the A/D conversion circuit, the first pressure sensor and the second pressure sensor are controlled by the single-chip microcomputer, and the periphery of the single-chip microcomputer is also provided with a power supply module , data cache module, keyboard circuit module, clock circuit module, alarm circuit module, interface circuit module and LCD display screen, the single chip microcomputer is connected with the water supply switch through the amplification circuit module, and the analog signal detected by the first pressure sensor and the second pressure sensor passes through The A/D conversion circuit converts it into a digital signal that can be recognized by the single chip microcomputer, and then controls the alarm circuit and the water supply circuit.

As shown in Figure 6, the described swirling flow double screen type sediment filter, when it works, the sediment-containing water flow entering the filter passes through the water inlet pipe→trash rack→hydrocyclone→centrifugation→coarse filter screen→ Diversion pipe → fine filter screen → water outlet pipe, when the water containing sediment flows to the water inlet pipe 1, passes through the trash rack 2, the water inlet switch 3 and the check valve 4, and is connected to the outer tank body 6 by the water pipe flange 5 , tangentially enters the tank body along the inner wall of the outer tank body 6, and generates swirling flow. Due to the difference in specific gravity between water and silt, the silt slides slowly along the tank body wall to the sand collection tank 17 under the action of centrifugal force, and the large amount of water in the water Part of the silt will be deposited, the water flow containing part of the silt rises slowly, and a small part of the silt settles again, and then under the water pressure, the water flows through the coarse filter screen 14 with a larger area to filter a part of the silt, and then the water flows through the diversion pipe 16 enters the fine filter screen 7 places, secondary filtration, after the water flow passes through the fine filter screen 7, then flows out through the water outlet pipe 13. The first pressure sensor 22 is set between the coarse filter screen and the outer tank body, and the second pressure sensor 9 is set inside the fine filter screen. When the pressure value of the first pressure sensor is less than the pressure threshold 1, the pressure value of the second pressure sensor is less than the pressure threshold II, the system is running normally, and when the pressure value of any sensor exceeds the corresponding pressure threshold, the power supply will be cut off to stop the water supply, and the alarm will be notified to the management personnel to clean the filter screen.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (6)

1. A kind of swirling flow double strainer type silt filter, it is characterized in that comprising outer tank body, described outer tank body bottom is provided with sand collecting tank, is divided into two chambers by S-shaped water baffle in the outer tank body The two chambers are respectively equipped with a fine filter and a coarse filter. The lower part of the fine filter and the coarse filter are connected by a diversion tube, and the upper part of the fine filter and the coarse filter are respectively provided with a fine filter cover and a coarse filter. Cover, the upper part of the outer tank is also provided with a tank cover, a vent valve and a water outlet pipe, the lower part of the outer tank is also provided with a drain hole, and the lower part of the diversion tube is also provided with a sand discharge pipe leading out of the outer tank; The tanks are connected, and the water inlet pipe is provided with a trash rack, a water inlet switch, a check valve and a water pipe flange in sequence; the bottom of the sand collection tank is provided with a sand discharge hole, and the side of the sand collection tank is an observation window. 2. The swirl double filter screen type sediment filter as claimed in claim 1, characterized in that: the fine filter screen and the coarse filter screen are separated by an S-shaped baffle and distributed symmetrically in the center, and the coarse filter screen A first pressure sensor is arranged in the outer tank cavity on the side where the filter screen is located, and the first pressure sensor is arranged outside the coarse filter screen and connected with the tank cover, and a second pressure sensor is installed in the outer tank body cavity on the side where the fine filter screen is located. sensor, the second pressure sensor is arranged in the fine filter screen and connected with the fine filter screen cover, the fine filter screen and the coarse filter screen are connected smoothly through the diversion tube, and a fine filter screen bracket is arranged between the fine filter screen and the diversion tube, A coarse filter screen support is arranged between the coarse filter screen and the guide pipe. 3. The swirling double filter screen type sediment filter as claimed in claim 2, characterized in that: the fine filter screen and the coarse filter screen pass through the fine filter screen cover and the coarse filter screen cover on the top respectively in a spiral form. Fixed on the outer tank body, the fine filter screen and the coarse filter screen are in the shape of a cylinder, and the top of the fine filter screen, the coarse filter screen and the S-shaped water baffle are all provided with sealing rubber rings. 4. The swirl double filter screen type sediment filter as claimed in claim 1, characterized in that: the observation window on the top of the sand collection tank is a strip sediment deposition observation window; the sand collection tank and the outer tank body Through the flange connection, the sand collection tank communicates with the inner cavity of the coarse filter. 5. The swirl double filter screen type sediment filter as claimed in claim 1, characterized in that: the upper part of the outer tank body is a cylindrical structure, and the lower part of the outer tank body is a cone structure; The sand collection tank is of an ellipsoidal structure; the tank cover is connected with the outer tank body through a flange. 6. The swirling double filter screen type sediment filter as claimed in claim 2, characterized in that: the first pressure sensor and the second pressure sensor are connected with the single-chip microcomputer through the A/D conversion circuit, and the first pressure sensor and the second pressure sensor are controlled by a single-chip microcomputer, and the periphery of the single-chip microcomputer is also provided with a power supply module, a data buffer module, a keyboard circuit module, a clock circuit module, an alarm circuit module, an interface circuit module and an LCD display screen, and the single-chip microcomputer is connected with the water supply switch through the amplifying circuit module The analog signals detected by the first pressure sensor and the second pressure sensor are converted into digital signals recognizable by the single-chip microcomputer through the A/D conversion circuit, and then control the alarm circuit and the water supply circuit.