Self-cleaning safety filter free of disassembly and washing and use method

Abstract

The invention discloses a self-cleaning safety filter free of disassembly and washing and a using method, and belongs to the technical field of filtering equipment, the self-cleaning safety filter comprises a shell, an inlet is formed in one side of the shell, an outlet is formed in the other side of the shell, a filtering cavity is formed in the shell and communicated with the inlet and the outlet, a washing opening is formed in the top of the shell, and a sewage draining opening is formed in the bottom of the shell; nitrogen is introduced from a cleaning opening in the upper portion of the shell for backwashing firstly, then water is introduced for washing, a medium generates rotating fluid through the rotating fluid dispersing disc, the filtering cavity is subjected to back flushing and back cleaning through tangential through holes in the filtering cavity, rotating fluid is generated for cleaning and dirt separation, nitrogen is introduced firstly, and the replacement effect of safety protection is achieved; water is introduced later, so that solid particles such as salt and alkali can be cleaned; a sealing plate is arranged, it is further ensured that input nitrogen and water can enter the filtering cavity from tangential through holes in the filtering cavity to be cleaned, the device does not need to be disassembled, cleaning is convenient, and manpower and time are saved.

Description

Technical Field

[0001] The invention belongs to the technical field of filtering equipment, and in particular relates to a self-cleaning safety filter that does not require disassembly or washing and a method for using the filter. Background Art

[0002] A large amount of impurities and pollutants, such as sand, mud, rust, and oil sludge, are generated during oilfield production. These impurities and pollutants can cause serious damage to equipment and pipelines, affecting the efficiency and safety of oilfield production. Filters can effectively remove these impurities and pollutants, protect equipment and pipelines, extend their service life, and improve the efficiency and safety of oilfield production.

[0003] At present, people are required to dismantle and clean the inlet filters of pipes or pumps and other equipment at the work site to achieve the purpose of cleaning and safety. However, the on-site cleaning of common filters requires dismantling the flange and working in the air, which is unsafe, time-consuming and laborious. In addition, in order to ensure safety, other auxiliary personnel and other tools are required, which wastes a lot of manpower and is even more inconvenient for individuals. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a self-cleaning safety filter that does not require disassembly and cleaning, so as to solve the technical problems in the prior art that on-site cleaning of the filter requires disassembling the flange, performing air-to-air operations, which is unsafe, time-consuming and labor-intensive.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A self-cleaning safety filter that does not require disassembly and washing comprises a shell, wherein an inlet is arranged on one side of the shell, and an outlet is arranged on the other side; a filter cavity is arranged inside the shell and is connected with the inlet and the outlet respectively; a sealing plate is arranged at the lower end of the filter cavity to form a sealing structure with the upper part of the shell interior; a rotating fluid dispersion disk is arranged above the filter cavity and is located inside the shell; a plurality of evenly distributed tangential through holes are arranged on the rotating fluid dispersion disk and the filter cavity; a cleaning port is arranged at the top of the shell, and a sewage outlet is arranged at the bottom.

[0007] Preferably, the filter cavity is fixed to the inner wall of the shell by a first tie rod.

[0008] Preferably, the rotating fluid dispersion disk is fixed to the inner wall of the shell by a second tie rod.

[0009] Preferably, the rotating fluid dispersion disk is a columnar structure, and a tangential through hole is circumferentially opened on the side wall thereof.

[0010] Preferably, the tangential through hole is inclined downward along the axis of the rotating fluid dispersion disk and the filter cavity, and the inclination angle is 10 degrees to 20 degrees.

[0011] Preferably, the radius of the rotating fluid dispersion disk is greater than the radius of the filter cavity, and the tangential through hole outlet on the rotating fluid dispersion disk is inclined centripetally toward the axis of the rotating fluid dispersion disk, so that the tangential through hole outlet on the rotating fluid dispersion disk faces the tangential through hole on the filter cavity, so that the fluid at the tangential through hole outlet on the rotating fluid dispersion disk can enter the tangential through hole on the filter cavity.

[0012] Preferably, a first pressure gauge is also provided on the top of the shell, and a first manual valve is also installed at the cleaning port.

[0013] Preferably, a second manual valve and a second pressure gauge are also installed at the sewage outlet.

[0014] The present invention also discloses a method for using a self-cleaning safety filter that does not require disassembly or washing, which specifically comprises the following steps:

[0015] S1: From nitrogen cleaning, cyclone separation, cleaning until the airflow blows the dirt to the bottom of the filter chamber;

[0016] S2: Open the drain port until the pressure is the same as that at the cleaning port, turn off the nitrogen and turn on the water;

[0017] S3: The rotating fluid dispersion disc works, and the cyclonic separation water flow flushes the dirt to the bottom of the filter chamber;

[0018] S4: Open the drain port until the pressure is the same as that at the cleaning port, then close the drain port.

[0019] Preferably, a first pressure gauge is provided at the top of the shell, and a second pressure gauge is provided at the sewage outlet;

[0020] In S2 and S4, the pressures at the cleaning port and the sewage outlet are determined by the first pressure gauge and the second pressure gauge respectively.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention discloses a self-cleaning safety filter that does not require disassembly and washing. Nitrogen is first connected to the cleaning port on the upper part of the shell for backwashing, and then water is connected to the cleaning port. The medium generates a rotating fluid through a rotating fluid dispersion disk and backwashes the filter cavity through a tangential through hole on the filter cavity, so that the rotating fluid is generated to clean and separate dirt. Nitrogen is first connected to play a replacement role for safety protection, and water is then connected to play a cleaning role for solid particles such as salt and alkali. A sealing plate is provided to further ensure that the input nitrogen and water can enter the filter cavity from the tangential through hole on the filter cavity for cleaning. The device does not need to be disassembled, is convenient to clean, and saves manpower and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a schematic structural diagram from a first perspective of a self-cleaning safety filter that does not require disassembly or washing provided by an embodiment of the present invention;

[0024] Figure 2 It is a schematic structural diagram from a second perspective of a self-cleaning safety filter that does not require disassembly or washing provided by an embodiment of the present invention;

[0025] Figure 3 This is a schematic structural diagram of a second viewing angle of a self-cleaning safety filter provided by an embodiment of the present invention, in which the rotating fluid dispersion disk is fixedly connected to the inner wall of the working body through four tie bars;

[0026] Figure 4 It is a schematic diagram of the tangential through-hole structure from a second perspective of a disassembly-free and self-cleaning safety filter provided by an embodiment of the present invention.

[0027] Among them: 1-shell; 2-inlet; 3-first tie rod; 4-second tie rod; 5-rotating fluid dispersion disk; 6-tangential through hole; 7-first hand valve; 8-cleaning port; 9-first pressure gauge; 10-filter cavity; 11-outlet; 12-second pressure gauge; 13-drain port; 14-second hand valve. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0031] See also Figure 1The present application discloses a self-cleaning safety filter that does not require disassembly and washing, including a shell 1, an inlet 3 is provided on one side of the shell 1, and an outlet 11 is provided on the other side. A filter cavity 10 is provided inside the shell 1 and is connected with the inlet 3 and the outlet 11 respectively. A sealing plate 15 is provided at the lower end of the filter cavity 10 to form a sealing structure with the upper part of the shell interior. A rotating fluid dispersion disk 5 is provided above the filter cavity 10 and is located inside the shell 1. A number of evenly distributed tangential through holes 6 are provided on the rotating fluid dispersion disk 5 and the filter cavity 10. A cleaning port 8 is provided at the top of the shell 1, and a sewage outlet 13 is provided at the bottom.

[0032] Directions:

[0033] S1: nitrogen is connected from 8 for cleaning, cyclone separation, and cleaning until the airflow blows the dirt to the bottom of the filter cavity 10;

[0034] S2: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, turn off the nitrogen and turn on the water;

[0035] S3: The rotating fluid dispersion disc 5 works, and the cyclonic separation water flow flushes the dirt to the bottom of the filter cavity 10;

[0036] S4: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, and then close the sewage outlet 13.

[0037] The present invention discloses a self-cleaning safety filter that does not require disassembly and washing. Nitrogen is first connected to the cleaning port on the upper part of the shell for backwashing, and then water is connected to the cleaning port. The medium generates a rotating fluid through a rotating fluid dispersion disk and backwashes the filter cavity through a tangential through hole on the filter cavity, so that the rotating fluid is generated to clean and separate dirt. Nitrogen is first connected to play a replacement role for safety protection, and water is then connected to play a cleaning role for solid particles such as salt and alkali. A sealing plate is provided to further ensure that the input nitrogen and water can enter the filter cavity from the tangential through hole on the filter cavity for cleaning. The device does not need to be disassembled, is convenient to clean, and saves manpower and time.

[0038] In some embodiments, the filter cavity 10 is fixed to the inner wall of the housing 1 by means of first tie bars 3. The first tie bars 3 are two to four and evenly distributed; see Figure 3 , Figure 4 The first tie rods 3 are evenly distributed and fix the filter cavity 10 .

[0039] Directions:

[0040] S1: nitrogen is connected from 8 for cleaning, cyclone separation, and cleaning until the airflow blows the dirt to the bottom of the filter cavity 10;

[0041] S2: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, turn off the nitrogen and turn on the water;

[0042] S3: The rotating fluid dispersion disc 5 works, and the cyclonic separation water flow flushes the dirt to the bottom of the filter cavity 10;

[0043] S4: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, and then close the sewage outlet 13.

[0044] In some embodiments, the rotating fluid dispersion disk 5 is fixed to the inner wall of the housing 1 by the second tie bars 4; the second tie bars 4 are two to four evenly distributed; see Figure 3 , Figure 4 The second tie rod 4 evenly distributes and fixes the rotating fluid dispersion disk 5.

[0045] Directions:

[0046] S1: nitrogen is connected from 8 for cleaning, cyclone separation, and cleaning until the airflow blows the dirt to the bottom of the filter cavity 10;

[0047] S2: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, turn off the nitrogen and turn on the water;

[0048] S3: The rotating fluid dispersion disc 5 works, and the cyclonic separation water flow flushes the dirt to the bottom of the filter cavity 10;

[0049] S4: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, and then close the sewage outlet 13.

[0050] In some embodiments, the rotating fluid dispersion disk 5 is a columnar structure, and a tangential through hole 6 is circumferentially opened on the side wall thereof.

[0051] In some embodiments, the tangential through holes 6 are tilted downward along the axis of the rotating fluid dispersion disk 5 and the filter cavity 10, with an inclination angle of 10 to 20 degrees; the rotating fluid dispersion disk 11 generates the rotating fluid generated by the tangential through holes 6 distributed on the periphery of the dispersion disk.

[0052] Directions:

[0053] S1: nitrogen cleaning is connected from 8, and the rotating fluid dispersion disk 5 is spun and separated until the airflow blows the dirt to the bottom of the filter cavity 10;

[0054] S2: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, turn off the nitrogen and turn on the water;

[0055] S3: the rotating fluid dispersion disc 5 works, and the rotating fluid dispersion disc 5 generates a rotating fluid that enters the filter cavity 10 from the tangential through hole 6, flushing the dirt to the bottom of the filter cavity 10;

[0056] S4: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, and then close the sewage outlet 13.

[0057] In some embodiments, the radius of the rotating fluid dispersion disk 5 is greater than the radius of the filter cavity 10, and the outlet of the tangential through hole 6 on the rotating fluid dispersion disk 5 is inclined centripetally toward the axis of the rotating fluid dispersion disk 5, so that the outlet of the tangential through hole 6 on the rotating fluid dispersion disk 5 is directed toward the tangential through hole 6 on the filter cavity 10, so that the fluid at the outlet of the tangential through hole 6 on the rotating fluid dispersion disk 5 can enter the tangential through hole 6 on the filter cavity 10.

[0058] In some embodiments, see Figure 1 , Figure 2 A first pressure gauge 9 is also provided on the top of the shell 1, and a first hand valve 7 is also installed at the cleaning port 8. The first pressure gauge 9 can observe the pressure and adjust the pressure of nitrogen and water.

[0059] In some embodiments, see Figure 1 , Figure 2 A second hand valve 14 and a second pressure gauge 12 are also installed at the sewage outlet 13. The second pressure gauge 12 can observe the pressure and adjust the pressure of nitrogen and water.

[0060] Directions:

[0061] S1: nitrogen cleaning is connected from 8, and the rotating fluid dispersion disk 5 is spun and separated until the airflow blows the dirt to the bottom of the filter cavity 10;

[0062] S2: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, turn off the nitrogen and turn on the water;

[0063] Determine the pressure at the cleaning port 8 and the sewage outlet 13 by means of the first pressure gauge 9 and the second pressure gauge 12;

[0064] S3: the rotating fluid dispersion disc 5 works, and the rotating fluid dispersion disc 5 generates a rotating fluid that enters the filter cavity 10 from the tangential through hole 6, flushing the dirt to the bottom of the filter cavity 10;

[0065] S4: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, and then close the sewage outlet 13;

[0066] The pressures at the cleaning port 8 and the sewage outlet 13 are determined by the first pressure gauge 9 and the second pressure gauge 12 .

[0067] In some embodiments, a self-cleaning safety filter that does not require disassembly and cleaning is preferably made of a metal material with a certain strength, such as an aluminum alloy or a steel alloy.

[0068] The present application also discloses a method for using the self-cleaning safety filter described in any one of the above, comprising the following steps:

[0069] S1: nitrogen is connected from 8 for cleaning, cyclone separation, and cleaning until the airflow blows the dirt to the bottom of the filter cavity 10;

[0070] S2: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, turn off the nitrogen and turn on the water;

[0071] S3: The rotating fluid dispersion disc 5 works, and the cyclonic separation water flow flushes the dirt to the bottom of the filter cavity 10;

[0072] S4: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, and then close the sewage outlet 13.

[0073] In some embodiments, a first pressure gauge 9 is provided at the top of the housing 1, and a second pressure gauge 12 is provided at the sewage outlet 13;

[0074] In S2 and S4, the pressures at the cleaning port 8 and the sewage outlet 13 are determined by the first pressure gauge 9 and the second pressure gauge 12 respectively.

[0075] [Example 1]

[0076] See also Figure 1 A self-cleaning safety filter that does not require disassembly and washing comprises a shell 1, an inlet 3 is arranged on one side of the shell 1, and an outlet 11 is arranged on the other side. A filter cavity 10 is arranged inside the shell 1 and is connected with the inlet 3 and the outlet 11 respectively. A sealing plate 15 is arranged at the lower end of the filter cavity 10 to form a sealing structure with the upper part of the shell interior. A rotating fluid dispersion disk 5 is arranged above the filter cavity 10 and is located inside the shell 1. A number of evenly distributed tangential through holes 6 are opened on the rotating fluid dispersion disk 5 and the filter cavity 10. A cleaning port 8 is opened at the top of the shell 1, and a sewage outlet 13 is opened at the bottom.

[0077] The rotating fluid dispersion disk 5 is a columnar hollow structure, and a cleaning port 8 is provided on the top of the shell 1 to communicate with each other. Nitrogen and water are connected to the cleaning port 8 for cleaning. A tangential through hole 6 is provided on the circumferential side wall of the rotating fluid dispersion disk 5. The tangential through hole 6 is connected with the columnar hollow structure. Nitrogen and water have a pressure of several kilograms. The medium ejected from the tangential through hole 6 enters the filter cavity 10 through the tangential through hole 6 on the filter cavity 10 to form a rotating fluid cyclone separation.

[0078] Directions:

[0079] S1: nitrogen is connected from 8 for cleaning, cyclone separation, and cleaning until the airflow blows the dirt to the bottom of the filter cavity 10;

[0080] S2: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, turn off the nitrogen and turn on the water;

[0081] S3: The rotating fluid dispersion disc 5 works, and the cyclonic separation water flow flushes the dirt to the bottom of the filter cavity 10;

[0082] S4: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, and then close the sewage outlet 13.

[0083] [Example 2]

[0084] A self-cleaning safety filter that does not require disassembly and washing comprises a shell 1. An inlet 3 is provided on one side of the shell 1, and an outlet 11 is provided on the other side. A filter chamber 10 is provided inside the shell 1 and is connected to the inlet 3 and the outlet 11 respectively. A sealing plate 15 is provided at the lower end of the filter chamber 10 to form a sealing structure with the upper inner part of the shell. A rotating fluid dispersion disk 5 is provided above the filter chamber 10 and is located inside the shell 1. A number of evenly distributed tangential through holes 6 are provided on the rotating fluid dispersion disk 5 and the filter chamber 10. A cleaning port 8 is provided at the top of the shell 1, and a sewage outlet 13 is provided at the bottom. The filter chamber 10 is fixed to the inner wall of the shell 1 by a first tie rod 3. Two to four of the first tie rods 3 are unevenly distributed; the rotating fluid dispersion disk 5 is fixed to the inner wall of the shell 1 by a second tie rod 4; two to four of the second tie rods 4 are unevenly distributed; see Figure 3 , Figure 4 The first tie rods 3 are evenly distributed and fix the filter cavity 10 .

[0085] Directions:

[0086] S1: nitrogen is connected from 8 for cleaning, cyclone separation, and cleaning until the airflow blows the dirt to the bottom of the filter cavity 10;

[0087] S2: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, turn off the nitrogen and turn on the water;

[0088] S3: The rotating fluid dispersion disc 5 works, and the cyclonic separation water flow flushes the dirt to the bottom of the filter cavity 10;

[0089] S4: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, and then close the sewage outlet 13.

[0090] [Example 3]

[0091] A self-cleaning safety filter that does not require disassembly and washing comprises a shell 1. An inlet 3 is provided on one side of the shell 1, and an outlet 11 is provided on the other side. A filter chamber 10 is provided inside the shell 1 and is connected to the inlet 3 and the outlet 11 respectively. A sealing plate 15 is provided at the lower end of the filter chamber 10 to form a sealing structure with the upper inner part of the shell. A rotating fluid dispersion disk 5 is provided above the filter chamber 10 and is located inside the shell 1. A number of evenly distributed tangential through holes 6 are provided on the rotating fluid dispersion disk 5 and the filter chamber 10. A cleaning port 8 is provided at the top of the shell 1, and a sewage outlet 13 is provided at the bottom. The filter chamber 10 is fixed to the inner wall of the shell 1 by a first tie rod 3. Two to four of the first tie rods 3 are unevenly distributed; the rotating fluid dispersion disk 5 is fixed to the inner wall of the shell 1 by a second tie rod 4; two to four of the second tie rods 4 are unevenly distributed; see Figure 3 , Figure 4 The first tie rod 3 is evenly distributed and fixes the filter cavity 10. The rotating fluid dispersion disk 5 is a columnar structure, and a tangential through hole 6 is opened circumferentially on its side wall. The rotating fluid dispersion disk 11 generates a rotating fluid generated by the tangential through holes 6 distributed on the outer circumference of the dispersion disk.

[0092] The radius of the rotating fluid dispersion disk 5 is greater than the radius of the filter cavity 10, and the outlet of the tangential through hole 6 on the rotating fluid dispersion disk 5 is inclined centripetally toward the axis of the rotating fluid dispersion disk 5, so that the outlet of the tangential through hole 6 on the rotating fluid dispersion disk 5 is directed toward the tangential through hole 6 on the filter cavity 10, so that the fluid at the outlet of the tangential through hole 6 on the rotating fluid dispersion disk 5 can enter the tangential through hole 6 on the filter cavity 10.

[0093] Directions:

[0094] S1: nitrogen cleaning is connected from 8, and the rotating fluid dispersion disk 5 is spun and separated until the airflow blows the dirt to the bottom of the filter cavity 10;

[0095] S2: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, turn off the nitrogen and turn on the water;

[0096] S3: the rotating fluid dispersion disc 5 works, and the rotating fluid dispersion disc 5 generates a rotating fluid that enters the filter cavity 10 from the tangential through hole 6, flushing the dirt to the bottom of the filter cavity 10;

[0097] S4: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, and then close the sewage outlet 13.

[0098] [Example 4]

[0099] A self-cleaning safety filter that does not require disassembly and washing comprises a shell 1. An inlet 3 is provided on one side of the shell 1, and an outlet 11 is provided on the other side. A filter chamber 10 is provided inside the shell 1 and is connected to the inlet 3 and the outlet 11 respectively. A sealing plate 15 is provided at the lower end of the filter chamber 10 to form a sealing structure with the upper inner part of the shell. A rotating fluid dispersion disk 5 is provided above the filter chamber 10 and is located inside the shell 1. A number of evenly distributed tangential through holes 6 are provided on the rotating fluid dispersion disk 5 and the filter chamber 10. A cleaning port 8 is provided at the top of the shell 1, and a sewage outlet 13 is provided at the bottom. The filter chamber 10 is fixed to the inner wall of the shell 1 by a first tie rod 3. Two to four of the first tie rods 3 are unevenly distributed; the rotating fluid dispersion disk 5 is fixed to the inner wall of the shell 1 by a second tie rod 4; two to four of the second tie rods 4 are unevenly distributed; see Figure 3 , Figure 4 , the first tie rod 3 is evenly distributed and fixes the filter cavity 10. The rotating fluid dispersion disk 5 is a columnar structure, and a tangential through hole 6 is opened circumferentially on its side wall. The rotating fluid dispersion disk 11 generates the rotating fluid, which is generated by the tangential through holes 6 distributed on the outer circumference of the dispersion disk. The radius of the rotating fluid dispersion disk 5 is greater than the radius of the filter cavity 10, and the outlet of the tangential through hole 6 on the rotating fluid dispersion disk 5 is inclined toward the axis of the rotating fluid dispersion disk 5, so that the outlet of the tangential through hole 6 on the rotating fluid dispersion disk 5 is toward the tangential through hole 6 on the filter cavity 10, so that the fluid at the outlet of the tangential through hole 6 on the rotating fluid dispersion disk 5 can enter the tangential through hole 6 on the filter cavity 10.

[0100] See also Figure 1 , Figure 2 A first pressure gauge 9 is also provided on the top of the shell 1, and a first hand valve 7 is also installed at the cleaning port 8. The first pressure gauge 9 can observe the pressure and adjust the pressure of nitrogen and water.

[0101] The sewage outlet 13 is also provided with a second hand valve 14 and a second pressure gauge 12 . The second pressure gauge 12 can observe the pressure and adjust the pressure of nitrogen and water.

[0102] Directions:

[0103] S1: nitrogen cleaning is connected from 8, and the rotating fluid dispersion disk 5 is spun and separated until the airflow blows the dirt to the bottom of the filter cavity 10;

[0104] S2: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, turn off the nitrogen and turn on the water;

[0105] Determine the pressure at the cleaning port 8 and the sewage outlet 13 by means of the first pressure gauge 9 and the second pressure gauge 12;

[0106] S3: the rotating fluid dispersion disc 5 works, and the rotating fluid dispersion disc 5 generates a rotating fluid that enters the filter cavity 10 from the tangential through hole 6, flushing the dirt to the bottom of the filter cavity 10;

[0107] S4: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, and then close the sewage outlet 13;

[0108] The pressures at the cleaning port 8 and the sewage outlet 13 are determined by the first pressure gauge 9 and the second pressure gauge 12 .

[0109] [Example 5]

[0110] A self-cleaning safety filter that does not require disassembly and washing comprises a shell 1. An inlet 3 is provided on one side of the shell 1, and an outlet 11 is provided on the other side. A filter chamber 10 is provided inside the shell 1 and is connected to the inlet 3 and the outlet 11 respectively. A sealing plate 15 is provided at the lower end of the filter chamber 10 to form a sealing structure with the upper inner part of the shell. A rotating fluid dispersion disk 5 is provided above the filter chamber 10 and is located inside the shell 1. A number of evenly distributed tangential through holes 6 are provided on the rotating fluid dispersion disk 5 and the filter chamber 10. A cleaning port 8 is provided at the top of the shell 1, and a sewage outlet 13 is provided at the bottom. The filter chamber 10 is fixed to the inner wall of the shell 1 by a first tie rod 3. Two to four of the first tie rods 3 are unevenly distributed; the rotating fluid dispersion disk 5 is fixed to the inner wall of the shell 1 by a second tie rod 4; two to four of the second tie rods 4 are unevenly distributed; see Figure 3 , Figure 4 , the first tie rod 3 is evenly distributed and fixes the filter cavity 10. The rotating fluid dispersion disk 5 is a columnar structure, and a tangential through hole 6 is opened circumferentially on its side wall. The rotating fluid dispersion disk 11 generates the rotating fluid, which is generated by the tangential through holes 6 distributed on the outer circumference of the dispersion disk. The radius of the rotating fluid dispersion disk 5 is greater than the radius of the filter cavity 10, and the outlet of the tangential through hole 6 on the rotating fluid dispersion disk 5 is inclined toward the axis of the rotating fluid dispersion disk 5, so that the outlet of the tangential through hole 6 on the rotating fluid dispersion disk 5 is toward the tangential through hole 6 on the filter cavity 10, so that the fluid at the outlet of the tangential through hole 6 on the rotating fluid dispersion disk 5 can enter the tangential through hole 6 on the filter cavity 10.

[0111] See also Figure 1 , Figure 2 A first pressure gauge 9 is also provided on the top of the shell 1, and a first hand valve 7 is also installed at the cleaning port 8. The first pressure gauge 9 can observe the pressure and adjust the pressure of nitrogen and water.

[0112] The sewage outlet 13 is also provided with a second hand valve 14 and a second pressure gauge 12 . The second pressure gauge 12 can observe the pressure and adjust the pressure of nitrogen and water.

[0113] The self-cleaning safety filter that does not require disassembly and cleaning is preferably made of metal materials with a certain strength, such as aluminum alloy and steel alloy.

[0114] Directions:

[0115] S1: nitrogen cleaning is connected from 8, and the rotating fluid dispersion disk 5 is spun and separated until the airflow blows the dirt to the bottom of the filter cavity 10;

[0116] S2: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, turn off the nitrogen and turn on the water;

[0117] Determine the pressure at the cleaning port 8 and the sewage outlet 13 by means of the first pressure gauge 9 and the second pressure gauge 12;

[0118] S3: the rotating fluid dispersion disc 5 works, and the rotating fluid dispersion disc 5 generates a rotating fluid that enters the filter cavity 10 from the tangential through hole 6, flushing the dirt to the bottom of the filter cavity 10;

[0119] S4: Open the sewage outlet 13 until the pressure is the same as that at the cleaning outlet 8, and then close the sewage outlet 13;

[0120] The pressures at the cleaning port 8 and the sewage outlet 13 are determined by the first pressure gauge 9 and the second pressure gauge 12 .

[0121] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A self-cleaning safety filter that does not require disassembly or cleaning, characterized in that: The invention comprises a shell (1), wherein one side of the shell (1) is provided with an inlet (3), and the other side is provided with an outlet (11), a filter chamber (10) is provided inside the shell (1) and is respectively connected with the inlet (3) and the outlet (11), a sealing plate (15) is provided at the lower end of the filter chamber (10) so as to form a sealing structure with the upper part of the inner part of the shell, a rotating fluid dispersion disk (5) is provided above the filter chamber (10) and is located inside the shell (1), a plurality of evenly distributed tangential through holes (6) are provided on the rotating fluid dispersion disk (5) and the filter chamber (10), a cleaning port (8) is provided at the top of the shell (1), and a sewage outlet (13) is provided at the bottom.

2. The self-cleaning safety filter according to claim 1, characterized in that: The filter cavity (10) is fixed to the inner wall of the housing (1) via a first tie rod (3).

3. The self-cleaning safety filter according to claim 1, characterized in that: The rotating fluid dispersion disc (5) is fixed to the inner wall of the shell (1) via a second tie rod (4).

4. The self-cleaning safety filter according to claim 1, characterized in that: The rotating fluid dispersion disk (5) is a columnar structure, and a tangential through hole (6) is circumferentially opened on the side wall thereof.

5. The self-cleaning safety filter according to claim 4, characterized in that: The tangential through hole (6) is inclined downward along the axis of the rotating fluid dispersion disk (5) and the filter cavity (10), and the inclination angle is 10 to 20 degrees.

6. The self-cleaning safety filter according to claim 4, characterized in that: The radius of the rotating fluid dispersion disk (5) is greater than the radius of the filter cavity (10), and the outlet of the tangential through hole (6) on the rotating fluid dispersion disk (5) faces the tangential through hole (6) on the filter cavity (10).

7. The self-cleaning safety filter according to claim 1, characterized in that: A first pressure gauge (9) is also provided on the top of the housing (1), and a first manual valve (7) is also installed at the cleaning port (8).

8. The self-cleaning safety filter according to claim 1, characterized in that: A second manual valve (14) and a second pressure gauge (12) are also installed at the sewage outlet (13).

9. The method for using the self-cleaning safety filter according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: nitrogen is connected from (8) for cleaning and cyclone separation until the airflow blows the dirt to the bottom of the filter chamber (10); S2: Open the sewage outlet (13) until the pressure is the same as that at the cleaning outlet (8), turn off the nitrogen and turn on the water; S3: the rotating fluid dispersion disc (5) works, and the cyclonic separation water flow flushes the dirt to the bottom of the filter cavity (10); S4: Open the sewage outlet (13) until the pressure is the same as that at the cleaning outlet (8), and then close the sewage outlet (13).

10. The method for using the self-cleaning safety filter according to claim 9, characterized in that: A first pressure gauge (9) is provided at the top of the housing (1), and a second pressure gauge (12) is provided at the sewage outlet (13); In S2 and S4, the pressures at the cleaning port (8) and the sewage outlet (13) are determined respectively by means of a first pressure gauge (9) and a second pressure gauge (12).

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