Shallow medium filter

Abstract

The utility model discloses a shallow medium filter which comprises a water inlet pipe, a blow-off pipe and a plurality of tank bodies, regulating valves are arranged above the tank bodies, a connecting pipe I, a connecting pipe II and a connecting pipe III are connected onto the regulating valves, one end, far away from the regulating valves, of the connecting pipe I is communicated with the water inlet pipe, and one end, far away from the regulating valves, of the connecting pipe II is communicated with the blow-off pipe. According to the utility model, by detecting the water pressure difference between the water inlet and the water outlet, backwashing is started when the pressure difference is large, so that the filter keeps a good filtering effect.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, and more specifically, to a shallow - medium filter. Background Art

[0002] Composed of multiple standard high - speed sand tank units, it is an efficient filtering device that uses filtering media to remove various suspended solids, microorganisms, and other fine particles in water, and finally achieves the effect of reducing water turbidity and purifying water quality. Common filter media include quartz sand, activated carbon, anthracite, manganese sand, etc. It is widely used in various industries such as agricultural irrigation, chemical industry, petroleum, metallurgy, industrial and mining, etc. In a shallow - medium filter, a large amount of dirt with strong adhesion, such as organic impurities, bacteria, and microorganisms, often accumulates in the filter - layer medium. During the backwashing process, simply flushing with clean water cannot completely remove the dirt, which affects the filtering effect of the shallow - medium filter. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the above - mentioned deficiencies of the prior art and provide a shallow - medium filter.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a shallow - medium filter, which includes a water inlet pipe, a sewage discharge pipe, and several tanks. A regulating valve is arranged above each tank. Connecting pipe one, connecting pipe two, and connecting pipe three are connected to the regulating valve. The end of connecting pipe one far away from the regulating valve is communicated with the water inlet pipe. The end of connecting pipe two far away from the regulating valve is communicated with the sewage discharge pipe. The end of connecting pipe three far away from the regulating valve is communicated with the tank. A drain pipe is connected to the lower part of the tank, and the lower end of the drain pipe is connected to a water outlet pipe. Pressure - measuring mechanisms are arranged on both the water inlet pipe and the water outlet pipe.

[0006] Further, one end of the sewage discharge pipe is closed, and the other end is connected with a sewage outlet ball valve.

[0007] Further, the pressure - measuring mechanism includes a pressure - stabilizing sleeve, on which a pressure gauge and a pressure transmitter are arranged.

[0008] Further, an exhaust valve is arranged on the upper part of the pressure - stabilizing sleeve, and a sewage discharge valve is connected to the lower part of the pressure - stabilizing sleeve.

[0009] Further, it further includes a stirring barrel. A feeding pipe is connected to the upper part of the stirring barrel. A diversion platform is arranged below the interior of the stirring barrel. A liquid outlet cavity is opened at the middle position below the diversion platform. A liquid outlet is connected to the side of the liquid outlet cavity. A water pump is arranged outside the stirring barrel. The inlet of the water pump is communicated with the liquid outlet. The outlet of the water pump is connected with a liquid supply pipe. The end of the liquid supply pipe far away from the water pump is closed. A connecting pipe four is also connected to the regulating valve. The end of connecting pipe four far away from the regulating valve is communicated with the side of the liquid supply pipe.

[0010] Further, a filter screen is arranged at the upper part of the liquid outlet cavity.

[0011] Further, a motor is arranged at the upper part of the stirring barrel. The motor is drivingly connected with a stirring shaft, and a plurality of first stirring blades are arranged on the side surface of the stirring shaft.

[0012] Further, a sleeve is rotatably arranged at the top inside the stirring barrel. The outer side of the sleeve is connected with second stirring blades. A linkage groove is formed in the lower part of the sleeve. The stirring shaft is provided with a linkage block matched with the linkage groove. A driving mechanism is arranged on the upper part of the diversion platform. The driving mechanism is drivingly connected with a mounting frame, and the motor is mounted on the mounting frame.

[0013] The beneficial effects of the utility model are as follows: pressure measuring mechanisms are installed on both the water inlet pipe and the water outlet pipe to detect pressure. When the pressure difference reaches a certain value, backwashing is started. A part of the filtered water in a part of the tank bodies flows into the tank body to be backwashed, and impurities are washed out. Subsequently, the two are replaced to complete the backwashing of all the tank bodies. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a shallow - layer medium filter in this embodiment;

[0015] Figure 2 It is a schematic structural diagram of a pressure measuring mechanism in this embodiment;

[0016] Figure 3 It is another schematic structural diagram of a shallow - layer medium filter in this embodiment;

[0017] Figure 4 It is a schematic structural diagram of a stirring barrel in this embodiment.

[0018] Reference numerals: 1, tank body; 2, regulating valve; 3, first connecting pipe; 4, water inlet pipe; 5, pressure measuring mechanism; 6, second connecting pipe; 7, sewage discharge pipe; 8, sewage discharge port ball valve; 9, third connecting pipe; 10, drain pipe; 11, water outlet pipe; 12, pressure stabilizing sleeve; 13, pressure gauge; 14, pressure transmitter; 15, exhaust valve; 16, sewage discharge valve; 17, fourth connecting pipe; 18, liquid supply pipe; 19, water pump; 20, stirring barrel; 21, feed pipe; 22, diversion platform; 23, liquid outlet cavity; 24, filter screen; 25, stirring shaft; 26, first stirring blades; 27, driving mechanism; 28, mounting frame; 29, sleeve; 30, second stirring blades; 31, linkage groove; 32, linkage block; 33, liquid outlet; 34, motor. Detailed Embodiment

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0020] As shown in the Figure 1 accompanying drawings, a shallow - medium filter includes a water inlet pipe 4, a sewage discharge pipe 7, a water outlet pipe 11, and a plurality of tanks 1. The water inlet pipe 4, the sewage discharge pipe 7, and the water outlet pipe 11 are arranged in parallel. The water inlet pipe 4, the sewage discharge pipe 7, and the water outlet pipe 11 are all structures with one end closed and one end open. The plurality of tanks 1 are arranged in parallel, and a quartz sand filler layer is provided inside the tank 1.

[0021] Above each tank 1, a regulating valve 2 is provided. Connecting pipes 1 - 3, 6, and 9 are respectively connected to the ports of the regulating valve 2. The upper end of the connecting pipe 1 - 3 is connected to the bottom of the water inlet pipe 4. The end of the connecting pipe 6 away from the regulating valve 2 is connected to the side of the sewage discharge pipe 7. The lower end of the connecting pipe 9 is connected to the upper end of the tank 1. A drain pipe 10 is connected to the lower part of the tank 1, and the lower end of the drain pipe 10 is connected to the water outlet pipe 11. Pressure - measuring mechanisms 5 are provided on both the water inlet pipe 4 and the water outlet pipe 11.

[0022] During normal use, water enters through the water inlet pipe 4. The regulating valve 2 controls the opening of the ports connecting the connecting pipe 1 - 3 and the connecting pipe 9, and closes the port connecting the connecting pipe 6, so that water enters the tank 1 from the connecting pipe 1 - 3 and the connecting pipe 9. When the water flows smoothly through the quartz sand filler layer, impurities such as suspended solids and colloidal particles are intercepted, and the filtered water flows out from the drain pipe 10 into the water outlet pipe 11. The two pressure - measuring mechanisms 5 are respectively used to detect the water pressure at the water inlet pipe 4 and the water outlet pipe 11. As the impurities continuously accumulate in the filler layer, the pressure difference between the water inlet pipe 4 and the water outlet pipe 11 will continuously increase. When the pressure difference reaches the set limit, the back - washing state is started. The regulating valve 2 on the tank 1 that needs to be back - washed is adjusted to open the ports connecting the connecting pipe 6 and the connecting pipe 9 and close the port connecting the connecting pipe 1 - 3. At this time, the other tanks 1 normally receive water for filtration. After this water flows into the water outlet pipe 11 through the drain pipe 10, part of the water will flow into the tank 1 that needs to be back - washed under pressure. The filler layer is washed up by the impact of the water flow, and the quartz sand filler layer becomes loose, and impurities such as suspended solids and colloids are more easily washed out. The washed - out impurities enter the sewage discharge pipe 7 through the connecting pipe 9 and the connecting pipe 6 and are discharged. After the back - washing of these tanks 1 is completed, the states of these tanks 1 and the un - back - washed tanks 1 are switched, and the remaining un - back - washed tanks 1 are back - washed, so as to complete the back - washing of all tanks 1.

[0023] One end of the sewage pipe 7 with an opening is connected to a sewage outlet ball valve 8. In the normal state, the sewage outlet ball valve 8 can be kept closed, effectively preventing water leakage and pressure relief.

[0024] As shown in the Figure 2 attachment, the pressure measuring mechanism 5 includes a pressure stabilizing sleeve 12, on which a pressure gauge 13 and a pressure transmitter 14 are arranged. The diameter of the pressure stabilizing sleeve 12 is larger than that of the water inlet pipe 4 and the water outlet pipe 11, thus forming a pressure stabilizing cavity, slowing down the fluid fluctuation, reducing the pressure fluctuation, making the detection more accurate, and avoiding misjudgment of backwashing caused by pressure fluctuation.

[0025] The pressure gauge 13 and the pressure transmitter 14 are set simultaneously for pressure measurement, and the results of the two are compared to make the pressure measurement result more accurate.

[0026] An exhaust valve 15 is arranged on the upper part of the pressure stabilizing sleeve 12. The function of the exhaust valve 15 is to discharge the air in the pipeline to make the pressure measurement more accurate and stable. A sewage valve 16 is connected to the lower part of the pressure stabilizing sleeve 12. The function of the sewage valve 16 is to discharge sundries, protect the sensor and also reduce the influence of sundries on the pressure measurement.

[0027] As shown in the Figure 3 -attachment Figure 4 attachment, the filter also includes a stirring barrel 20. A feed pipe 21 is connected to the upper part of the stirring barrel 20. A flow guiding platform 22 is arranged below the interior of the stirring barrel 20. A liquid outlet cavity 23 is opened at the middle position below the flow guiding platform 22. A liquid outlet 33 is connected to the side of the liquid outlet cavity 23. A water pump 19 is arranged outside the stirring barrel 20. The inlet of the water pump 19 is communicated with the liquid outlet 33. The outlet of the water pump 19 is connected to a liquid supply pipe 18. One end of the liquid supply pipe 18 far from the water pump 19 is closed. A fourth connecting pipe 17 is also connected to the regulating valve 2. One end of the fourth connecting pipe 17 far from the regulating valve 2 is communicated with the side of the liquid supply pipe 18. Cleaning liquid is configured in the stirring barrel 20. Before backwashing, the cleaning liquid is first injected into the tank body 1 to submerge the impurities in the cleaning liquid and dissolve them, so that they can be better flushed out during the backwashing process and the backwashing effect is better.

[0028] A filter screen 24 is arranged above the liquid outlet cavity 23 to filter the liquid entering the liquid outlet cavity 23 and intercept sundries.

[0029] A motor 34 is arranged on the upper part of the stirring barrel 20. The motor 34 is drivingly connected to a stirring shaft 25. A plurality of first stirring blades 26 are arranged on the side of the stirring shaft 25. By driving the stirring shaft 25 to rotate by the motor 34, the stirring shaft 25 drives the first stirring blades 26 to rotate, stirring the liquid in the stirring barrel 20 to make the components in the liquid evenly mixed.

[0030] A sleeve 29 is rotatably arranged at the top inside the stirring barrel 20. A second stirring blade 30 is connected to the outside of the sleeve 29. A linkage groove 31 is formed in the lower part of the sleeve 29. A linkage block 32 matching the linkage groove 31 is arranged on the stirring shaft 25. A driving mechanism 27 is arranged on the upper part of the diversion platform 22. The driving mechanism 27 is drivingly connected to a mounting frame 28, and a motor 34 is installed on the mounting frame 28. When the liquid in the stirring barrel 20 is less, the stirring can be completed only by driving the first stirring blade 26 to rotate through the stirring shaft 25. When the liquid volume in the stirring barrel 20 is more, the driving mechanism 27 is driven 38 to drive the motor 34 to rise, so that the linkage block 32 on the stirring shaft 25 is clamped into the linkage groove 31, so that the stirring shaft 25 drives the sleeve 29 to rotate synchronously during the rotation process, thereby driving the second stirring blade 30 to rotate, and stirring the liquid at a higher position in the stirring barrel 20 through the second stirring blade 30.

[0031] The driving mechanism 27 is a cylinder or a hydraulic cylinder, and the driving mechanism 27 drives 28 to perform a linear motion.

[0032] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A shallow media filter, characterized in that: The invention comprises a water inlet pipe (4), a sewage pipe (7) and a plurality of tank bodies (1), wherein a regulating valve (2) is arranged above each of the tank bodies (1), wherein each of the regulating valves (2) is connected to a connecting pipe 1 (3), a connecting pipe 2 (6) and a connecting pipe 3 (9), wherein one end of the connecting pipe 1 (3) away from the regulating valve (2) is connected to the water inlet pipe (4), one end of the connecting pipe 2 (6) away from the regulating valve (2) is connected to the sewage pipe (7), and one end of the connecting pipe 3 (9) away from the regulating valve (2) is connected to the tank body (1), wherein a drainage pipe (10) is connected to a water outlet pipe (11) at the lower end of the drainage pipe (10), and pressure measuring mechanisms (5) are arranged on each of the water inlet pipe (4) and the water outlet pipe (11); and the invention also comprises a mixing bucket. (20), a feed pipe (21) is connected to the upper part of the mixing barrel (20), a guide platform (22) is arranged at the lower part of the mixing barrel (20), a liquid outlet cavity (23) is opened at the middle position of the lower part of the guide platform (22), a liquid outlet port (33) is connected to the side of the liquid outlet cavity (23), a water pump (19) is arranged on the outer side of the mixing barrel (20), the inlet of the water pump (19) is connected to the liquid outlet port (33), the outlet of the water pump (19) is connected to the liquid supply pipe (18), the end of the liquid supply pipe (18) away from the water pump (19) is closed, and the regulating valve (2) is also connected to a connecting pipe four (17), the end of the connecting pipe four (17) away from the regulating valve (2) is connected to the side of the liquid supply pipe (18).

2. A shallow media filter according to claim 1, characterized in that: One end of the sewage discharge pipe (7) is closed, and the other end is connected to a sewage discharge outlet ball valve (8).

3. A shallow media filter according to claim 1, characterized in that: The pressure measuring mechanism (5) comprises a pressure stabilizing sleeve (12), and a pressure gauge (13) and a pressure transmitter (14) are arranged on the pressure stabilizing sleeve (12).

4. A shallow media filter according to claim 3, characterized in that: An exhaust valve (15) is arranged on the upper part of the pressure stabilizing sleeve (12), and a sewage discharge valve (16) is connected to the lower part of the pressure stabilizing sleeve (12).

5. A shallow media filter according to claim 1, characterized in that: A filter screen (24) is provided on the upper portion of the liquid outlet cavity (23).

6. A shallow media filter according to claim 1, characterized in that: A motor (34) is arranged on the upper part of the stirring barrel (20), and the motor (34) is connected to a stirring shaft (25) in a driving manner, and a plurality of stirring blades (26) are arranged on the side of the stirring shaft (25).

7. A shallow media filter according to claim 6, characterized in that: A sleeve (29) is rotatably provided at the top of the inner side of the stirring barrel (20), a stirring blade (30) is connected to the outer side of the sleeve (29), a linkage groove (31) is provided at the lower part of the sleeve (29), a linkage block (32) matched with the linkage groove (31) is provided on the stirring shaft (25), a driving mechanism (27) is provided at the upper part of the guide platform (22), the driving mechanism (27) is drivably connected to a mounting frame (28), and the motor (34) is mounted on the mounting frame (28).

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