A filter using a conical filter screen

Abstract

The utility model discloses a filter that adopts conical filter screen, which is composed of a speed reducer, an upper end cover, an inlet pressure gauge, a filter inlet, a filter screen, a spiral brush, a filter residue discharge port, a filter shell, an outlet pressure gauge, a filter outlet, fixing bolts, a filter screen support frame, a sealing strip and a filter screen support table. During the process of filtering liquid material containing particulate impurities, the filter screen in the filter is changed from a cylindrical filter screen to a conical filter screen, and the sealing strip is changed from an O-shaped ring to a square sealing strip. The utility model solves the problems of difficult assembly and poor sealing of the cylindrical filter screen, realizes easy assembly and good sealing quality of the filter screen, and improves the filtering effect and operation quality of the filter.

Description

Technical Field

[0001] This utility model relates to the technical field of filtering liquid materials containing particulate impurities, and directly relates to a filter using a conical filter screen. Background Technology

[0002] Currently, rotary filters are mainly used in the filtration of liquid materials containing particulate impurities. The filter screen inside the rotary filter is the main component of the filter. Traditional filters generally use cylindrical filter screens, and O-rings are used to seal the filter screen and the filter housing support. However, during the filtration of liquid particulate materials, the filter screen is often clogged by particulate impurities in the material. After clogging, it needs to be disassembled and cleaned, which increases labor intensity and affects normal operation. Therefore, it is very necessary to study a filter that is easy to disassemble and install and has a tight seal. Summary of the Invention

[0003] The purpose of this invention is to address the problem that traditional rotary filters using cylindrical filter screens are difficult to disassemble and install after clogging. The invention proposes a filter using a conical filter screen, and the technical solution is as follows:

[0004] This utility model discloses a filter using a conical filter screen, comprising a reducer 1, an upper cover 2, an inlet pressure gauge 3, a filter inlet 4, a filter screen 5, a spiral brush 6, a filter discharge port 7, a filter housing 8, an outlet pressure gauge 9, a filter outlet 10, fixing bolts 11, a filter screen support frame 12, a sealing strip 13, and a filter screen support platform 14. The reducer 1 is installed on the upper part of the upper cover 2, which is located on the upper part of the filter housing 8 and connected to it by fastening bolts. The inlet pressure gauge 3 is located on the pipe of the filter inlet 4, which is connected to the upper part of the filter housing 8 via a pipe. The filter screen 5 is installed on the filter screen support platform 14 inside the filter housing 8, fixed by fixing bolts 11, and sealed by the sealing strip 13 in the coupling groove between the support platform 14 and the support frame 12. The outlet pressure gauge 9 is installed on the pipe of the filter outlet 10, which is installed on the lower part of the filter housing 8 via a pipe. The filter discharge port 7 is installed at the bottom of the filter housing 8.

[0005] Preferably, the filter screen is a conical filter screen, and the upper and lower parts of the filter screen that contact the support platform are provided with square coupling grooves, and the positions of the coupling grooves are corresponding vertically. During assembly, a square sealing strip is installed in the groove.

[0006] Preferably, the sealing strip is a highly elastic food-grade silicone square sealing strip with a width (8mm) equal to the groove width (8mm) and a height (20mm) greater than the sum of the two groove depths (16mm). This facilitates fixing the position of the sealing strip and ensures a good seal between the media before and after filtration by tightening the fixing bolts.

[0007] Preferably, a spiral brush is installed inside the filter screen. The spiral brush is connected to the reducer via a connecting rod and a rotating shaft. The spiral brush rotates clockwise, brushing the particulate impurities filtered on the inner wall of the filter screen to the bottom of the filter and then discharged through the filter discharge port.

[0008] The purpose of this invention is achieved as follows: liquid material containing particulate impurities enters from the filter inlet, enters the filter screen inside the filter, and is collected through the filter screen and discharged from the filter outlet; the particulate impurities in the liquid material are filtered onto the inner surface of the filter screen, and the particulate impurities are brushed to the bottom of the filter screen by the rotation of the spiral brush, and finally settle at the bottom of the filter housing and are discharged through the intermittently switched filter discharge port, thus completing the filtration process of liquid material containing particulate impurities.

[0009] When there are large pressure fluctuations between the filter inlet and outlet pressure gauges, or when abnormal particles appear in the filtered material, the filter needs to be shut down and disassembled for inspection. During disassembly, first remove the fastening bolts of the upper cover, remove the upper cover, and then remove the fixing bolts on the upper part of the filter screen. This allows for the removal of the conical filter screen. Due to the conical structure of the filter screen, disassembly is relatively easy. Check the sealing effect of the sealing strip to identify the cause (filter screen blockage or damaged sealing strip). After confirming everything is correct, install the filter screen in sequence, tighten the fixing bolts, and after all installations are complete, perform another inspection before resuming operation.

[0010] The beneficial effects of this utility model are as follows: By using a conical filter screen, the filter screen is easier and simpler to disassemble and install than a cylindrical filter screen, and the material enters from the upper large cone end of the conical filter screen without affecting the filtration pressure on the filter screen surface; the spiral brush, through the continuous rotation of the reducer, can continuously brush the particulate impurities on the filter screen to the bottom of the filter and discharge them through the filter discharge port, preventing the particulate impurities on the filter screen from adhering to the filter screen for a long time and clogging the filter screen; the use of coupling grooves and square sealing strips achieves a tight fit and good sealing effect between the filter screen and the filter support platform. Attached Figure Description

[0011] Appendix Figure 1 This diagram illustrates the structure of a filter employing a conical filter screen according to the present invention.

[0012] Appendix Figure 2 An enlarged schematic diagram of a portion of the filter screen structure of this utility model is shown.

[0013] Explanation of reference numerals in the attached figures: 1. Gearbox; 2. Top cover; 3. Inlet pressure gauge; 4. Filter inlet; 5. Filter screen; 6. Spiral brush; 7. Filter discharge port; 8. Filter housing; 9. Outlet pressure gauge; 10. Filter outlet; 11. Fixing bolts; 12. Filter screen support frame; 13. Sealing strip; 14. Filter screen support platform. Detailed Implementation

[0014] Now combined with the appendix Figure 1 Appendix Figure 2 The present invention provides a further description of a filter employing a conical filter screen.

[0015] This utility model discloses a filter using a conical filter screen, comprising a reducer 1, an upper cover 2, an inlet pressure gauge 3, a filter inlet 4, a filter screen 5, a spiral brush 6, a filter discharge port 7, a filter housing 8, an outlet pressure gauge 9, a filter outlet 10, fixing bolts 11, a filter screen support frame 12, a sealing strip 13, and a filter screen support platform 14. The reducer 1 is installed on the upper part of the upper cover 2, which is located on the upper part of the filter housing 8 and connected to it by fastening bolts. The inlet pressure gauge 3 is located on the pipe of the filter inlet 4, which is connected to the upper part of the filter housing 8 via a pipe. The filter screen 5 is installed on the filter screen support platform 14 inside the filter housing 8, fixed by fixing bolts 11, and sealed by the sealing strip 13 in the coupling groove between the support platform 14 and the support frame 12. The outlet pressure gauge 9 is installed on the pipe of the filter outlet 10, which is installed on the lower part of the filter housing 8 via a pipe. The filter discharge port 7 is installed at the bottom of the filter housing 8.

[0016] The working principle of this utility model is as follows: Liquid material containing particulate impurities enters from the filter inlet, enters the filter screen inside the filter, and is collected through the filter screen and discharged from the filter outlet; the particulate impurities in the liquid material are filtered onto the inner surface of the filter screen, and the rotation of the spiral brush brushes the particulate impurities to the bottom of the filter screen, and finally settle at the bottom of the filter housing and are discharged through the intermittently switched filter discharge port, thus completing the filtration process of liquid material containing particulate impurities.

[0017] This invention utilizes a conical filter screen, which is easier to disassemble and install than a cylindrical filter screen. Furthermore, material enters from the upper, larger cone end of the conical filter screen, without affecting the filtration pressure on the screen surface. A spiral brush, driven by a speed reducer, continuously brushes particulate impurities onto the filter screen towards the bottom of the filter, where they are discharged through the slag outlet, preventing long-term adhesion and clogging of the filter screen. The use of coupling grooves and square sealing strips ensures a tight fit and excellent sealing between the filter screen and the filter support.

Claims

1. A filter employing a conical filter screen, comprising a reducer (1), an upper end cover (2), an inlet pressure gauge (3), a filter inlet (4), a filter screen (5), a spiral brush (6), a filter discharge port (7), a filter housing (8), an outlet pressure gauge (9), a filter outlet (10), fixing bolts (11), a filter screen support frame (12), a sealing strip (13), and a filter screen support platform (14), characterized in that: The reducer (1) is installed on the upper part of the upper end cover (2), which is located on the upper part of the filter housing (8) and is connected to the filter housing (8) by fastening bolts; the inlet pressure gauge (3) is located on the pipe of the filter inlet (4), which is connected to the upper part of the filter housing (8) through the pipe; the filter screen (5) is installed on the filter screen support platform (14) inside the filter housing (8), fixed by fixing bolts (11), and sealed by the sealing strip (13) in the coupling groove of the support platform (14) and the support frame (12); the outlet pressure gauge (9) is installed on the pipe of the filter outlet (10), which is installed on the lower part of the filter housing (8) through the pipe; and the filter discharge port (7) is installed at the bottom of the filter housing (8).

2. The filter using a conical filter screen according to claim 1, characterized in that: The filter screen is a conical filter screen. The upper and lower parts of the filter screen that contact the support platform are provided with square coupling grooves, and the positions of the coupling grooves are corresponding vertically. During assembly, a square sealing strip is installed in the groove.

3. The filter using a conical filter screen according to claim 1, characterized in that: The sealing strip is a highly elastic food-grade silicone square sealing strip with a width of 8mm, which is the same as the groove width of 8mm. The height of 20mm is greater than the depth of the two grooves and 16mm, which makes it easy to fix the position of the sealing strip.

4. The filter using a conical filter screen according to claim 1, characterized in that: The spiral brush is connected to the reducer via a connecting rod and a rotating shaft. The spiral brush rotates clockwise, brushing the particulate impurities filtered on the inner wall of the filter screen to the bottom of the filter and then discharging them through the filter discharge port.

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