Filtering device

Abstract

The utility model discloses a filtering device which comprises a tank body, a filter screen is arranged in the tank body, the tank body is divided into an upper chamber and a lower chamber by the filter screen, the upper chamber is provided with a feed port and an air inlet, the lower chamber is provided with a discharge port and an air outlet, an air pump is arranged at the top of the tank body, and the air pump is connected with the air inlet and the air outlet through a first pipeline. A guide plate is arranged below the filter screen and inclines towards the bottom of the tank body, an annular pipeline is arranged between the filter screen and the guide plate, the first pipeline is connected with a second pipeline, the second pipeline extends into the tank body to be connected with the annular pipeline, and the annular pipeline is connected with a plurality of blowing pipelines with openings facing the filter screen. Air can be blown to the filter screen through the air blowing pipeline, so that blockage of the filter screen is reduced, and an air blowing source comes from an original air exhaust and supply mechanism, so that the whole structure is relatively simple.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical equipment technical field more particularly, relate to a filter device. BACKGROUND

[0002] The filter device is provided with a filter screen in the tank body, the filter screen divides the tank body into two chambers, and the upper and lower chambers form a pressure difference through air suction and air supply, so that the solid-liquid mixture is separated. During filtration, due to the large pressure, part of the solid material will be embedded in the mesh of the filter screen, causing the filter screen to be blocked, affecting the filtration effect, and the tank body has high integrity to ensure sealing, so it is more cumbersome to open the tank body to replace the filter screen. SUMMARY

[0003] The utility model discloses a filter device that can reduce filter screen blockage.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a filter device, comprising a tank body, a filter screen is installed in the tank body, the filter screen divides the tank body into an upper chamber and a lower chamber, the upper chamber is provided with a feeding port and an air inlet, the lower chamber is provided with a discharging port and an air outlet, a gas pump is installed on the top of the tank body, the gas pump is connected with the air inlet and the air outlet through a first pipeline, a deflector is arranged below the filter screen, the deflector is inclined towards the bottom of the tank body, an annular pipeline is arranged between the filter screen and the deflector, the first pipeline is connected with a second pipeline, the second pipeline extends into the tank body and is connected with the annular pipeline, and a plurality of air blowing pipelines with openings facing the filter screen are connected with the annular pipeline.

[0005] Further, the side wall of the tank body is provided with a support ring, and the filter screen comprises a frame, and the frame is fixed to the support ring.

[0006] Further, the edge of the frame is provided with a fixing groove, a fixing ring is embedded in the fixing groove, and the fixing ring is connected and fixed with the support ring through a fastener.

[0007] Further, the air blowing pipeline comprises a first section and a second section, the first section is connected with the annular pipeline, the first section is connected with the second section, the first section is inclined towards the deflector, and the second section is inclined towards the filter screen to form a V-shaped structure with the first section and the second section.

[0008] Further, the connection between the first section and the second section is provided with a drain pipe extending towards the bottom of the tank body, and the drain pipe communicates the first section and the second section.

[0009] Further, the drainage pipe is provided with a drainage plate, the drainage plate is fixed to one side of the drainage pipe close to the first section and extends to the side of the water pipe close to the second section, the length of the drainage plate is less than the width of the drainage pipe so that a drainage opening is formed between the drainage plate and the side of the water pipe close to the second section.

[0010] In summary, the utility model has the following beneficial effects:

[0011] 1. The filter screen can be blown through the blowing pipeline, thereby reducing the blockage of the filter screen, and the air source for blowing comes from the original air extraction and supply mechanism, so that the overall structure is relatively simple.

[0012] 2. The blowing pipeline is in V-shaped structure, and the drainage pipe is arranged on the blowing pipeline, so that liquid flowing back to other pipelines through the blowing pipeline can be reduced, and normal operation of air extraction and supply can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is an enlarged view of A in the figure; Figure 1

[0015] Figure 3 It is a structural schematic view of the blowing pipeline;

[0016] Figure 4 It is an enlarged view of B in the figure; Figure 3

[0017] The reference signs are as follows: tank body 100, upper chamber 110, feeding port 111, air inlet 112, lower chamber 120, air outlet 121, discharging port 122, air pump 130, first pipeline 131, second pipeline 132, control valve 133, support ring 140, filter screen 200, frame 210, fixing groove 211, fixing ring 220, fastener 230, annular pipeline 300, blowing pipeline 400, first section 410, second section 420, drainage pipe 430, drainage plate 440, drainage opening 441, flow guide plate 500. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] Reference is made to Figures 1 to 4 ​​The embodiment discloses a filtering device, which comprises a tank body 100, a filter screen 200 is arranged in the tank body 100, the filter screen 200 divides the tank body 100 into an upper chamber 110 and a lower chamber, the upper chamber 110 is provided with a feeding port 111 and an air inlet 112, the lower chamber 120 is provided with a discharging port 122 and an air outlet 121, an air pump 130 is arranged at the top of the tank body 100, the air pump 130 is connected with the air inlet 112 and the air outlet 121 through a first pipeline 131, so that the lower chamber 120 can be pumped, the pressure of the lower chamber 120 is reduced, at the same time, the upper chamber 110 is filled with air, so that the pressure of the upper chamber 110 is increased, and the pressure difference between the upper chamber 110 and the lower chamber 120 is increased. After a solid-liquid mixture enters the upper chamber 110 through a feeding hole, the solid-liquid mixture is placed on the filter screen 200, and the solid-liquid mixture is separated by the pressure difference between the upper chamber 110 and the lower chamber 120, and the separated liquid passes through the filter screen 200 and enters the lower chamber 120.

[0020] A guide plate 500 is arranged below the filter screen 200, the guide plate 500 is inclined towards the bottom of the tank body 100, the liquid dripping from the filter screen 200 can be guided to move towards the center of the tank body 100, so that the liquid is prevented from splashing to the air outlet 121. An annular pipeline 300 is arranged between the filter screen 200 and the guide plate 500, the first pipeline 131 is connected with a second pipeline 132, the second pipeline 132 extends into the tank body 100 and is connected with the annular pipeline 300, and a plurality of air blowing pipelines 400 are connected with the annular pipeline 300 and are open towards the filter screen 200. The second pipeline 132 is communicated with the first pipeline 131, a control valve 133 is arranged at the connection position of the second pipeline 132 and the first pipeline 131, the control valve 133 controls the air flow to enter the upper chamber 110 or the second pipeline 132, the air flow flows to the annular pipeline 300 after entering the second pipeline 132, and then is blown out from the air blowing pipelines 400, so that the filter screen 200 is blown to reduce the blockage of the filter screen 200.

[0021] The air blowing pipeline 400 comprises a first section 410 and a second section 420, the first section 410 is connected with the annular pipeline 300, the first section 410 is connected with the second section 420, the first section 410 is inclined towards the guide plate 500, and the second section 420 is inclined towards the filter screen 200, so that the first section 410 and the second section 420 form a V-shaped structure. The V-shaped structure can prevent the liquid from flowing back into the annular pipeline 300, so that the influence of the liquid entering the air blowing pipeline 400 from the opening of the second section 420 on the air blowing pipeline 400 is reduced.

[0022] Meanwhile, a drain pipe 430 extending towards the bottom of the tank 100 is arranged at the joint of the first section 410 and the second section 420, the drain pipe 430 communicates the first section 410 and the second section 420, a flow guide plate 440 is arranged in the drain pipe 430, the flow guide plate 440 is fixed to the side of the drain pipe 430 close to the first section 410 and extends towards the side of the drain pipe close to the second section 420, the length of the flow guide plate 440 is less than the width of the drain pipe 430 so that a drain opening 441 is formed between the flow guide plate 440 and the side of the drain pipe close to the second section 420. The flow guide plate 440 is made of elastic material, when the airflow flows from the first section 410 to the second section 420, the flow guide plate 440 is deformed to block the drain opening 441 under the pressure of the airflow while guiding the airflow, which can reduce the air leakage during blowing, when the liquid enters the blowing pipeline 400 from the opening of the second section 420, the liquid flows along the second section 420 to the drain opening 441 and then is discharged through the drain pipe 430.

[0023] The side wall of the tank 100 is provided with a support ring 140, the filter screen 200 comprises a frame 210, the edge of the frame 210 is provided with a fixing groove 211, a fixing ring 220 is embedded in the fixing groove 211, the fixing ring 220 is connected and fixed with the support ring 140 through a fastener 230, which can ensure the stability of the connection of the filter screen 200 in the tank 100.

[0024] The above only describes the preferred embodiments of the present application, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical solutions belonging to the idea of the present application all belong to the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application can also be considered as the protection scope of the present application.

Claims

1. A filter device, characterized in that The utility model provides a filter tank, including the tank body (100), the filter screen (200) is installed in the tank body (100), the filter screen (200) divides the tank body (100) into upper chamber (110) and lower chamber (120), upper chamber (110) is provided with feed inlet (111) and air inlet (112), lower chamber (120) is provided with discharge outlet (122) and air outlet (121), the top of tank body (100) is installed air pump (130), air pump (130) is connected air inlet (112) with air outlet (121) through first pipeline (131), the lower side of filter screen (200) is provided with deflector (500), deflector (500) is inclined towards the bottom of tank body (100), annular pipeline (300) is arranged between filter screen (200) and deflector (500), second pipeline (132) is connected to first pipeline (131), and second pipeline (132) extends into tank body (100) and is connected with annular pipeline (300), and annular pipeline (300) is connected with a plurality of blow pipeline (400) that open towards filter screen (200).

2. A filter device according to claim 1, characterised in that The side wall of the tank body (100) is provided with a support ring (140), and the filter screen (200) includes a frame (210) fixed to the support ring (140).

3. A filter device according to claim 2, characterised in that The edge of the frame (210) is provided with a fixing groove (211), and a fixing ring (220) is embedded in the fixing groove (211). The fixing ring (220) is connected and fixed to the support ring (140) through a fastener (230).

4. The filter device of claim 1, wherein, The blow pipeline (400) includes a first section (410) and a second section (420). The first section (410) is connected to the annular pipeline (300). The first section (410) is connected to the second section (420). The first section (410) is inclined towards the deflector (500). The second section (420) is inclined towards the filter screen (200) to form a V-shaped structure with the first section (410) and the second section (420).

5. A filter device according to claim 4, characterised in that The connection between the first section (410) and the second section (420) is provided with a drain pipe (430) extending towards the bottom of the tank body (100). The drain pipe (430) communicates the first section (410) and the second section (420).

6. A filter device according to claim 5, characterised in that The drain pipe (430) is provided with a drainage plate (440). The drainage plate (440) is fixed to one side of the drain pipe (430) close to the first section (410) and extends towards the other side of the drain pipe close to the second section (420). The length of the drainage plate (440) is less than the width of the drain pipe (430) to form a drain opening (441) between the drainage plate (440) and the other side of the drain pipe close to the second section (420).

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