A forward and reverse alternating filter

Abstract

The utility model discloses a kind of positive and negative alternation filters, belong to particulate matter or powder filtering equipment field.A kind of positive and negative alternation filter, the filter includes shell;Filter screen, including first filter screen, second filter screen;First scraper device is set in the first filter screen;The first scraper device is connected rotating cylinder;Driving mechanism, the first scraper device is rotated, and the driving mechanism includes: guide shaft, is passed in the partition, and the guide shaft both ends are respectively equipped with first moving rod, second moving rod;The guide shaft both ends are respectively equipped with first piston, second piston;Second filter screen inside is equipped with second scraper device, and the second scraper device and first scraper device structure are same;The second scraper device and the driving mechanism structure of the first scraper device are same.The utility model utilizes the up and down movement of piston to seal baffle hole block and open, two filter screens alternate filtering, alternate cleaning, do not affect normal filtration, and improve filtering efficiency.

Claims

1. A forward and reverse alternating filter, the filter comprising a housing, characterized in that, The filter includes: The filter screen includes a first filter screen and a second filter screen; a partition is provided between the first filter screen and the second filter screen. A first scraper device is disposed inside the first filter screen; the first scraper device is connected to a rotating cylinder; A driving mechanism drives the first scraper device to rotate, the driving mechanism comprising: A guide shaft passes through the partition plate, and a first moving rod and a second moving rod are respectively provided at both ends of the guide shaft; a first piston and a second piston are respectively provided at both ends of the guide shaft. The first moving rod is connected to a guide shaft at one end and a sliding sleeve at the other end; The first piston is disposed between the guide shaft and the first moving rod; The inner wall of the first filter screen is provided with a first sealing block that seals with the first piston; The second filter screen is equipped with a second scraper device inside, which has the same structure as the first scraper device; the drive mechanism of the second scraper device has the same structure as the first scraper device.

2. The alternating forward and reverse filter according to claim 1, characterized in that, The rotating cylinder has a spiral groove inside; the sliding sleeve slides along the groove.

3. The alternating forward and reverse filter according to claim 1, characterized in that, The shell is a split structure, including a first cover, a can body, and a second cover; a first support frame is provided on one side of the can body, the first support frame is a hollow structure, and a first sleeve is provided in the middle of the first support frame; the rotating cylinder is rotatably connected to the first sleeve.

4. The alternating forward and reverse filter according to claim 3, characterized in that, The first cover is provided with a first liquid inlet pipe and a first liquid outlet pipe; the second cover is provided with a second liquid inlet pipe and a second liquid outlet pipe; the tank body is provided with a clean liquid pipe and an air inlet pipe.

5. A forward and reverse alternating filter according to claim 1, characterized in that, The first scraper device includes: a scraper holder with a scraper brush; the scraper holder is radially adjustable to the rotating cylinder.

6. The alternating forward and reverse filter according to claim 1, characterized in that, The outer peripheral surface of the first piston is a tapered surface, and the first sealing block is provided with an inner hole that mates with the outer peripheral surface of the first piston.

7. A forward and reverse alternating filter according to claim 1, characterized in that, The driving mechanism further includes an outer cylinder; the first piston has an inner hole for the first moving rod to pass through, the first piston has a boss, the boss is inserted into the outer cylinder and fixed to the outer cylinder; an elastic element is provided between the first piston and the rotating cylinder.

8. A forward and reverse alternating filter according to claim 1, characterized in that, One end of the rotating cylinder is provided with a guide sleeve for the insertion of the first moving rod; the other end of the rotating cylinder is connected to a support handle; the support handle is rotatably connected to the first support frame.

9. A forward and reverse alternating filter according to claim 1, characterized in that, On the side opposite to the partition, the first filter screen has an opening, the opening has a flange, and the flange is connected to the first support frame; the second filter screen has an opening, the opening is connected to the second support frame; the second support frame has a second sleeve in the middle.

10. A forward and reverse alternating filter according to claim 1, characterized in that, The first filter screen and the second filter screen are separate structures; the first filter screen and the second filter screen are connected by a flange, and the partition is set on either filter screen. On both sides of the partition, the inner walls of the first filter screen and the second filter screen are respectively provided with a first sealing block and a second sealing block; the partition is a hollow structure with an insertion hole for the guide shaft in the middle.

Images