Self-discharge type slag remover

Abstract

A self-discharge type slag removal machine, including a filter shell, an import pipe is arranged on the filter shell, a water outlet is arranged at the bottom of the filter shell, a filter cylinder is arranged in the filter shell, the import pipe penetrates into the filter cylinder, and the filter cylinder is arranged obliquely downward; the filter cylinder penetrates out of the filter shell to form an external discharge pipe, the external discharge pipe is sealingly arranged, and a slag removal port is arranged on the external discharge pipe. Through the obliquely arranged filter cylinder, the filter cylinder can play a filtering role in the use process, and large impurities are limited in the filter cylinder; in the use process, the large impurities slide downward along the filter cylinder, slide to the bottom of the filter cylinder, and the cleaning nozzle can play a cleaning and auxiliary impurity discharge role.

Description

Technical Field

[0001] This application relates to a self-draining slag remover. Background Technology

[0002] Wastewater contains a significant amount of impurities, which need to be removed before further treatment. The most common method for removing wastewater impurities is filtration. However, plate heat exchangers are ineffective at removing large impurities, and mesh filters are difficult to clean, especially given the complexity of the impurities in the wastewater. Ordinary filter screens are prone to clogging, and once clogged, they are difficult to clean. Therefore, existing wastewater sludge removal machines are insufficient, have excessively high operating costs, and are unsuitable for initial wastewater treatment. Summary of the Invention

[0003] To address the aforementioned problems, this application proposes a self-draining slag remover, comprising a filter housing, an inlet pipe on the filter housing, a water outlet at the bottom of the filter housing, and a filter cylinder inside the filter housing. The inlet pipe extends into the filter cylinder, which is angled downwards. The filter cylinder extends out of the filter housing to form an external discharge pipe, which is sealed and has a slag removal port. Several cleaning nozzles are arranged around the periphery of the filter cylinder. The filter cylinder includes several transverse filter rods extending along its axial direction, with end connecting rings at both ends of each transverse filter rod. Several outer support rings are arranged on the outer side of the transverse filter rods, and the outer support rings and transverse filter rods are staggered to form filter holes. This application utilizes the angled filter cylinder, which effectively filters during use, confining large debris within the filter cylinder. During use, large debris slides downwards along the filter cylinder to the bottom. The cleaning nozzles then clean and assist in the discharge of debris.

[0004] Preferably, the two ends of the transverse filter rod are bent to form arc-shaped fixing hooks, which are fixedly attached to the end connecting rings; a protective layer is provided on the transverse filter rod.

[0005] Preferably, a spiral blade is provided inside the filter housing, and a rotating shaft is provided in the middle of the spiral blade. The rotating shaft passes through the filter housing and is equipped with a drive motor. A protective layer is also provided on the spiral blade.

[0006] Preferably, the transverse filter rod and the spiral blades are made of stainless steel;

[0007] The protective layer is prepared according to the following method:

[0008] The stainless steel surface of the spiral blades or transverse filter rods is purified.

[0009] The first coating is applied to the stainless steel surface by plasma spraying.

[0010] Then a second coating is applied by plasma spraying;

[0011] The plasma spraying settings are: voltage 60V, current 400A, Ar gas flow rate 45L / min, H2 gas flow rate 5L / min, spraying distance 150mm, moving speed 80mm / min, and powder feeding rate 15g / min.

[0012] The first coating comprises the following raw materials in parts by weight: titanium oxide: 30-40 parts; Co: 20-30 parts; Ni: 10-20 parts; aluminum oxide: 20-30 parts;

[0013] The second coating comprises the following raw materials in parts by weight: Ni: 5-10 parts; Cr: 10-15 parts; WC: 30-40 parts; MoS2: 4-6 parts. This application achieves better wear resistance by applying a first coating and a second coating to the outer surface of the spiral blades and the transverse filter rod. The main function of the first coating is to reduce the cleanliness requirements of the stainless steel surface. After the second coating is applied over the first coating, the second coating exhibits better wear resistance, preventing impurities from accumulating on it and ensuring the operating time of this application.

[0014] Preferably, the inlet pipe is vertically positioned at the top of the filter housing, and the angle between the axis of the filter cylinder and the horizontal direction is 10-30°. The spacing between adjacent blades of the spiral blades gradually decreases from the inlet pipe to the slag removal port. A discharge pipe is provided at the bottom of the external discharge pipe to form a slag removal port, and a slag discharge valve is provided on the discharge pipe. The slag discharge valve is a slide gate valve or a ball valve. The spiral blades of this application are designed with gradually decreasing gaps, which can promptly remove large impurities from the interior, preventing the accumulation of impurities and affecting the filtration efficiency.

[0015] Preferably, the inlet pipe is connected to the filter cylinder through a tapered tube with a gradually increasing transverse cross-section.

[0016] Preferably, the drive motor is connected to the rotating shaft via a speed reducer.

[0017] Preferably, an annular pipe is provided on the outside of the filter cylinder, and the annular pipe is fixedly connected to the filter cylinder by an axial support rod. A transverse pipe is provided between the annular pipes, and the cleaning nozzle is connected to the transverse pipe and faces the filter cylinder. In this application, the annular pipe and the transverse pipe are both pipes and supports, minimizing the impact on the internal filtration environment, ensuring the stability of overall operation, and reducing pressure drop as little as possible.

[0018] Preferably, a connecting pipe is connected to an annular pipe or a transverse pipe, the connecting pipe extending out of the filter housing and connected to a water supply pump.

[0019] Preferably, the filter housing is provided with several legs at its bottom.

[0020] This application can bring the following beneficial effects:

[0021] 1. This application uses an angled filter cylinder that can filter during use, confining large debris within the filter cylinder. During use, large debris will slide down the filter cylinder to the bottom. The cleaning nozzle can clean and assist in the discharge of debris.

[0022] 2. This application achieves better wear resistance by setting a first coating and a second coating on the outer side of the spiral blades and the transverse filter rod. The main function of the first coating is to reduce the cleanliness requirements of the stainless steel surface. After the second coating is applied to the first coating, the second coating has better wear resistance, avoids the accumulation of impurities on it, and ensures the operating time of this application.

[0023] 3. The spiral blades of this application are designed with gradually decreasing gaps, which can promptly remove large debris from the interior and prevent the accumulation of debris, thus affecting the filtration efficiency. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of this application;

[0026] Figure 2 This is a schematic diagram of the filter cylinder. Detailed Implementation

[0027] To clearly illustrate the technical features of this solution, the following detailed description, in conjunction with the accompanying drawings, will be provided.

[0028] In the first embodiment, such as Figure 1-2As shown, a self-draining slag remover includes a filter housing 1, an inlet pipe 2 on the filter housing 1, a water outlet 3 at the bottom of the filter housing 1, and a filter cylinder 4 inside the filter housing 1. The inlet pipe 2 extends into the filter cylinder 4, which is angled downwards. The filter cylinder 4 extends out of the filter housing 1 to form an external discharge pipe 5, which is sealed. A slag removal port 6 is provided on the external discharge pipe 5, and several cleaning nozzles 7 are provided around the filter cylinder 4. The filter cylinder 4 includes several transverse filter rods 8 extending along its axial direction. End connecting rings 9 are provided at both ends of the transverse filter rods 8, and several outer support rings 10 are provided on the outside of the transverse filter rods 8. The outer support rings 10 and the transverse filter rods 8 are arranged alternately to form filter holes.

[0029] In use, wastewater is introduced into the filter cylinder 4 through the inlet pipe 2. Filter holes are set on the filter cylinder 4 so that small impurities are discharged through the filter holes, while large impurities accumulate inside the filter cylinder 4 and are introduced into the external discharge pipe 5. The impurities are then discharged from the sludge discharge port. Small impurities and water enter the space between the large filter housing 1 and the filter cylinder 4 and are then discharged from the water outlet 3. If the filter cylinder 4 becomes blocked, the filter cylinder 4 is flushed from the outside to the inside using the cleaning nozzle 7.

[0030] In the second embodiment, as Figure 1-2As shown, a self-draining slag remover includes a filter housing 1, an inlet pipe 2 on the filter housing 1, a water outlet 3 at the bottom of the filter housing 1, and a filter cylinder 4 inside the filter housing 1. The inlet pipe 2 extends into the filter cylinder 4, which is angled downwards. The filter cylinder 4 extends out of the filter housing 1 to form an external discharge pipe 5, which is sealed. A slag removal port 6 is provided on the external discharge pipe 5, and several cleaning nozzles 7 are arranged around the periphery of the filter cylinder 4. The filter cylinder 4 includes several transverse filter rods 8 extending along its axial direction. End connecting rings 9 are provided at both ends of the transverse filter rods 8, and several outer support rings 10 are provided on the outer side of the transverse filter rods 8. The outer support rings 10 and the transverse filter rods 8 are arranged alternately to form filter holes. The two ends of the transverse filter rods 8 are bent to form arc-shaped fixing hooks 11, which are fixedly hooked to the end connecting rings 9. A protective layer is provided on the transverse filter rods 8. A spiral blade 12 is installed inside the filter cylinder 4, and a rotating shaft is installed in the middle of the spiral blade 12. The rotating shaft passes through the filter housing 1 and is connected to a drive motor. A protective layer is also provided on the spiral blade 12. The inlet pipe 2 is vertically installed at the top of the filter housing 1, and the filter cylinder 4 is installed obliquely downward. The angle between the axis of the filter cylinder 4 and the horizontal direction is 10-30°. The spacing between adjacent blades of the spiral blade 12 gradually decreases from the inlet pipe 2 to the slag removal port 6. A discharge pipe 13 is installed at the bottom of the external discharge pipe 5 to form the slag removal port 6. A slag removal valve 14 is installed on the discharge pipe 13. The slag removal valve 14 is a slide valve or a ball valve. The inlet pipe 2 is connected to the filter cylinder 4 through a tapered pipe 15 with a gradually increasing transverse cross-section. The drive motor 16 is connected to the rotating shaft 17 through a reducer. An annular pipe 18 is provided on the outside of the filter cylinder 4. The annular pipe 18 is fixedly connected to the filter cylinder 4 by an axial support rod 19. A transverse pipe 20 is provided between the annular pipes 18. The cleaning nozzle 7 is connected to the transverse pipe 20 and faces the filter cylinder 4. A connecting pipe 21 is connected to the annular pipe 18 or the transverse pipe 20. The connecting pipe 21 extends out of the filter housing 1 and is connected to a water supply pump 22. Several support legs 23 are provided at the bottom of the filter housing 1.

[0031] In use, wastewater is introduced into the filter cylinder 4 through the inlet pipe 2. Filter holes are set on the filter cylinder 4 so that small impurities can be discharged through the filter holes, while large impurities accumulate inside the filter cylinder 4. Then, the drive motor drives the rotating shaft 17, which drives the spiral blades 12 to guide the large impurities into the external discharge pipe 5 and then discharge the impurities from the slag discharge port. Small impurities and water enter the space between the large filter housing 1 and the filter cylinder 4 and are then discharged from the water outlet 3. If the filter cylinder 4 is blocked, the water supply pump supplies water to the connecting pipe. The connecting pipe supplies high-pressure water to the annular pipe and the transverse pipe, so that the cleaning nozzles 7 on the transverse pipe flush the filter cylinder 4 from the outside to the inside. In order to ensure the flushing effect, at least three rows of evenly distributed cleaning nozzles 7 are generally set relative to the filter cylinder 4.

[0032] To demonstrate the function of the protective layer, the transverse filter rod 8 and the spiral blade 12 of this application are made of stainless steel. First, the surface is sprayed, then assembled as shown in the second embodiment, and then normal sewage filtration treatment is performed. The duration of continuous operation is recorded. When the pressure difference exceeds 0.05 MPa, the duration of continuous operation is recorded.

[0033] In the following synthesis example, the synthesis is carried out in the following manner:

[0034] S1. The stainless steel surface of the spiral blades or transverse filter rod 8 is purified;

[0035] The treatment method involves sandblasting followed by high-pressure air cleaning.

[0036] S2. The first coating is applied to the stainless steel surface by plasma spraying; the plasma spraying settings are 60V, 400A, Ar gas flow rate of 45L / min, H2 gas flow rate of 5L / min, spraying distance of 150mm, moving speed of 80mm / min, and powder feeding rate of 15g / min.

[0037] The first coating comprises the following raw materials in parts by weight: titanium oxide: 30-40 parts; Co: 20-30 parts; Ni: 10-20 parts; aluminum oxide: 20-30 parts;

[0038] S3. Then, a second coating is applied by plasma spraying;

[0039] The plasma spraying settings are: voltage 60V, current 400A, Ar gas flow rate 45L / min, H2 gas flow rate 5L / min, spraying distance 150mm, moving speed 80mm / min, and powder feeding rate 15g / min.

[0040] The second coating comprises the following raw materials in parts by weight: Ni: 5-10 parts; Cr: 10-15 parts; WC: 30-40 parts; MoS2: 4-6 parts.

[0041] Synthesis example 1:

[0042] S101. The stainless steel surfaces of the spiral blades and the transverse filter rod are purified;

[0043] The treatment method involves sandblasting followed by high-pressure air cleaning.

[0044] S102. The first coating is applied to the stainless steel surface by plasma spraying; the plasma spraying settings are 60V, 400A, Ar gas flow rate of 45L / min, H2 gas flow rate of 5L / min, spraying distance of 150mm, moving speed of 80mm / min, and powder feeding rate of 15g / min.

[0045] The first coating comprises the following raw materials in parts by weight: titanium oxide: 30 parts; Co: 20 parts; Ni: 10 parts; aluminum oxide: 20 parts;

[0046] S103. Then, a second coating is applied by plasma spraying;

[0047] The plasma spraying settings are: voltage 60V, current 400A, Ar gas flow rate 45L / min, H2 gas flow rate 5L / min, spraying distance 150mm, moving speed 80mm / min, and powder feeding rate 15g / min.

[0048] The second coating comprises the following raw materials in parts by weight: Ni: 5 parts; Cr: 10 parts; WC: 30 parts; MoS2: 4 parts.

[0049] Under normal operation, the pressure drop reached 0.05 MPa after 35 days of use.

[0050] Synthesis example 2:

[0051] S201. The stainless steel surfaces of the spiral blades and the transverse filter rod are purified.

[0052] The treatment method involves sandblasting followed by high-pressure air cleaning.

[0053] S202. The first coating is applied to the stainless steel surface by plasma spraying; the plasma spraying settings are 60V, 400A, Ar gas flow rate of 45L / min, H2 gas flow rate of 5L / min, spraying distance of 150mm, moving speed of 80mm / min, and powder feeding rate of 15g / min.

[0054] The first coating comprises the following raw materials in parts by weight: titanium oxide: 40 parts; Co: 30 parts; Ni: 20 parts; aluminum oxide: 30 parts;

[0055] S203. Then, a second coating is applied by plasma spraying;

[0056] The plasma spraying settings are: voltage 60V, current 400A, Ar gas flow rate 45L / min, H2 gas flow rate 5L / min, spraying distance 150mm, moving speed 80mm / min, and powder feeding rate 15g / min.

[0057] The second coating comprises the following raw materials in parts by weight: Ni: 10 parts; Cr: 15 parts; WC: 40 parts; MoS2: 6 parts.

[0058] Under normal operation, the pressure drop reached 0.05 MPa after 31 days of use.

[0059] Synthesis example 3:

[0060] S301. The stainless steel surfaces of the spiral blades and the transverse filter rod are purified.

[0061] The treatment method involves sandblasting followed by high-pressure air cleaning.

[0062] S302. The first coating is applied to the stainless steel surface by plasma spraying; the plasma spraying settings are 60V, 400A, Ar gas flow rate of 45L / min, H2 gas flow rate of 5L / min, spraying distance of 150mm, moving speed of 80mm / min, and powder feeding rate of 15g / min.

[0063] The first coating comprises the following raw materials in parts by weight: titanium oxide: 35 parts; Co: 25 parts; Ni: 15 parts; aluminum oxide: 25 parts;

[0064] S303. Then, a second coating is applied by plasma spraying;

[0065] The plasma spraying settings are: voltage 60V, current 400A, Ar gas flow rate 45L / min, H2 gas flow rate 5L / min, spraying distance 150mm, moving speed 80mm / min, and powder feeding rate 15g / min.

[0066] The second coating comprises the following raw materials in parts by weight: Ni: 8 parts; Cr: 12 parts; WC: 35 parts; MoS2: 5 parts.

[0067] Under normal operation, the pressure drop reached 0.05 MPa after 36 days of use.

[0068] Synthesis example 4:

[0069] S401. The stainless steel surfaces of the spiral blades and transverse filter rods are purified.

[0070] The treatment method involves sandblasting followed by high-pressure air cleaning.

[0071] S402. The first coating is applied to the stainless steel surface by plasma spraying; the plasma spraying settings are 60V, 400A, Ar gas flow rate of 45L / min, H2 gas flow rate of 5L / min, spraying distance of 150mm, moving speed of 80mm / min, and powder feeding rate of 15g / min.

[0072] The first coating comprises the following raw materials in parts by weight: titanium oxide: 35 parts; Co: 25 parts; Ni: 15 parts; aluminum oxide: 25 parts;

[0073] Under normal operation, the pressure drop reached 0.05 MPa after 15 days of use.

[0074] Synthesis example 5:

[0075] S501. The stainless steel surfaces of the spiral blades and the transverse filter rod are purified.

[0076] The treatment method involves sandblasting followed by high-pressure air cleaning.

[0077] S502. A second coating is applied to the stainless steel surface by plasma spraying;

[0078] The plasma spraying settings are: voltage 60V, current 400A, Ar gas flow rate 45L / min, H2 gas flow rate 5L / min, spraying distance 150mm, moving speed 80mm / min, and powder feeding rate 15g / min.

[0079] The second coating comprises the following raw materials in parts by weight: Ni: 8 parts; Cr: 12 parts; WC: 35 parts; MoS2: 5 parts.

[0080] Under normal operation, the pressure drop reached 0.05 MPa after 18 days of use.

[0081] Synthesis example 6:

[0082] S601. The stainless steel surfaces of the spiral blades and the transverse filter rod are purified.

[0083] The treatment method involves sandblasting followed by high-pressure air cleaning.

[0084] S602. The first coating is applied to the stainless steel surface by plasma spraying; the plasma spraying settings are 60V, 400A, Ar gas flow rate of 45L / min, H2 gas flow rate of 5L / min, spraying distance of 150mm, moving speed of 80mm / min, and powder feeding rate of 15g / min.

[0085] The first coating comprises the following raw materials in parts by weight: Co: 25 parts; Ni: 15 parts; aluminum oxide: 25 parts;

[0086] S603. Then, a second coating is applied by plasma spraying;

[0087] The plasma spraying settings are: voltage 60V, current 400A, Ar gas flow rate 45L / min, H2 gas flow rate 5L / min, spraying distance 150mm, moving speed 80mm / min, and powder feeding rate 15g / min.

[0088] The second coating comprises the following raw materials in parts by weight: Ni: 8 parts; Cr: 12 parts; WC: 35 parts; MoS2: 5 parts.

[0089] Under normal operation, the pressure drop reached 0.05 MPa after 21 days of use.

[0090] Synthesis example 7:

[0091] S701. The stainless steel surfaces of the spiral blades and the transverse filter rod are purified.

[0092] The treatment method involves sandblasting followed by high-pressure air cleaning.

[0093] S702. The first coating is applied to the stainless steel surface by plasma spraying; the plasma spraying settings are 60V, 400A, Ar gas flow rate of 45L / min, H2 gas flow rate of 5L / min, spraying distance of 150mm, moving speed of 80mm / min, and powder feeding rate of 15g / min.

[0094] The first coating comprises the following raw materials in parts by weight: Co: 25 parts; Ni: 15 parts;

[0095] S703. Then, a second coating is applied by plasma spraying;

[0096] The plasma spraying settings are: voltage 60V, current 400A, Ar gas flow rate 45L / min, H2 gas flow rate 5L / min, spraying distance 150mm, moving speed 80mm / min, and powder feeding rate 15g / min.

[0097] The second coating comprises the following raw materials in parts by weight: Ni: 8 parts; Cr: 12 parts; WC: 35 parts; MoS2: 5 parts.

[0098] Under normal operation, the pressure drop reached 0.05 MPa after 20 days of use.

[0099] Synthesis example 8:

[0100] S801. The stainless steel surfaces of the spiral blades and transverse filter rods are purified.

[0101] The treatment method involves sandblasting followed by high-pressure air cleaning.

[0102] S802. The first coating is applied to the stainless steel surface by plasma spraying; the plasma spraying settings are 60V, 400A, Ar gas flow rate of 45L / min, H2 gas flow rate of 5L / min, spraying distance of 150mm, moving speed of 80mm / min, and powder feeding rate of 15g / min.

[0103] The first coating comprises the following raw materials in parts by weight: titanium oxide: 35 parts; Co: 25 parts; Ni: 15 parts; aluminum oxide: 25 parts;

[0104] S803. Then, a second coating is applied by plasma spraying;

[0105] The plasma spraying settings are: voltage 60V, current 400A, Ar gas flow rate 45L / min, H2 gas flow rate 5L / min, spraying distance 150mm, moving speed 80mm / min, and powder feeding rate 15g / min.

[0106] The second coating comprises the following raw materials in parts by weight: Ni: 8 parts; Cr: 12 parts.

[0107] Under normal operation, the pressure drop reached 0.05 MPa after 24 days of use.

[0108] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A self-discharging slag remover, characterized in that: The filter includes a filter housing, an inlet pipe on the filter housing, an outlet at the bottom of the filter housing, and a filter cylinder inside the filter housing. The inlet pipe passes into the filter cylinder, which is angled downwards. The filter cylinder extends out of the filter housing to form an external drain pipe, which is sealed and has a slag removal port. Several cleaning nozzles are arranged around the periphery of the filter cylinder. The filter cylinder includes several transverse filter rods extending along its axial direction. End connecting rings are provided at both ends of the transverse filter rods, and several external support rings are provided on the outside of the transverse filter rods. The external support rings and the transverse filter rods are arranged alternately to form filter holes. The two ends of the transverse filter rod are bent to form arc-shaped fixing hooks, which are fixedly attached to the end connecting rings; a protective layer is provided on the transverse filter rod; a spiral blade is provided inside the filter cylinder, and a rotating shaft is provided in the middle of the spiral blade. The rotating shaft passes through the filter housing and is equipped with a drive motor. A protective layer is also provided on the spiral blade. The transverse filter rod and spiral blades are made of stainless steel. The protective layer is prepared according to the following method: The stainless steel surface of the spiral blades or transverse filter rods is purified. The first coating is applied to the stainless steel surface by plasma spraying. Then a second coating is applied by plasma spraying; The plasma spraying settings are: voltage 60V, current 400A, Ar gas flow rate 45 L / min, H2 gas flow rate 5 L / min, spraying distance 150mm, moving speed 80 mm / min, and powder feeding rate 15 g / min. The first coating comprises the following raw materials in parts by weight: titanium oxide: 30-40 parts; Co: 20-30 parts; Ni: 10-20 parts; aluminum oxide: 20-30 parts; The second coating comprises the following raw materials in parts by weight: Ni: 5-10 parts; Cr: 10-15 parts; WC: 30-40 parts; MoS2: 4-6 parts.

2. The self-discharging slag remover according to claim 1, characterized in that: The inlet pipe is vertically positioned at the top of the filter housing, and the filter cylinder is angled downwards. The angle between the axis of the filter cylinder and the horizontal direction is 10-30°. The spacing between adjacent blades of the spiral blades gradually decreases from the inlet pipe to the slag removal port. A discharge pipe is provided at the bottom of the external discharge pipe to form a slag removal port, and a slag discharge valve is provided on the discharge pipe. The slag discharge valve is a slide gate valve or a ball valve.

3. The self-discharging slag remover according to claim 1, characterized in that: The inlet tube is connected to the filter cylinder through a tapered tube with a gradually increasing transverse cross-section.

4. A self-discharging slag remover according to claim 1, characterized in that: The drive motor is connected to the rotating shaft via a speed reducer.

5. A self-discharging slag remover according to claim 1, characterized in that: An annular tube is provided on the outside of the filter cylinder. The annular tube is fixedly connected to the filter cylinder by an axial support rod. A transverse tube is provided between the annular tubes. The cleaning nozzle is connected to the transverse tube and is oriented towards the filter cylinder.

6. A self-discharging slag remover according to claim 5, characterized in that: A connecting pipe is connected to an annular pipe or a transverse pipe, the connecting pipe extending out of the filter housing and connected to a water supply pump.

7. A self-discharging slag remover according to claim 1, characterized in that: Several legs are provided at the bottom of the filter housing.

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