A method for treating organic sewage

Abstract

The present invention provides an organic sewage treatment method, which relates to the technical field of sewage treatment. The organic sewage treatment method includes a box body and a light-emitting device installed in the box body, a filter plate is installed in the box body, a scraper is provided above the filter plate, and a motion device for making the scraper move along the length direction of the filter plate is installed in the box body, a limiting component is installed on the scraper so that the bottom of the scraper is close to the filter plate when the scraper moves to the left, and the limiting component causes a gap between the bottom of the scraper and the filter plate when the scraper moves to the right, and a rotating roller is provided at the bottom of the filter plate; the slag discharge plate moves together with the scraper, so that impurities are scraped out of the first slag discharge port, and the rotating roller moves together during the movement of the scraper, so that the insert block is inserted into the filter hole of the filter plate, thereby dredging the filter hole and avoiding the impurities being squeezed into the filter hole during the scraping process. This arrangement facilitates cleaning of the filter plate.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a method for treating organic sewage. Background Art

[0002] With the development of global industrialization, water pollution has become increasingly serious, and water pollutants are becoming more diverse. Common pollutants include toxic heavy metals, natural toxins, pharmaceuticals, and organic pollutants. Due to its pollution-free and safe nature, photocatalytic technology has become a hot topic in environmental research for the treatment and degradation of pollutants. The principle of photocatalysis is based on the redox activity of photocatalysts under illumination, enabling the purification of pollutants, as well as the synthesis and transformation of substances. Typically, photocatalytic oxidation reactions use semiconductors as catalysts and light as energy to degrade organic matter into carbon dioxide and water. This technology operates without the need for separate electron acceptors, boasts easily controllable operating conditions, a simple structure, and a strong oxidation capacity without secondary pollution. It can completely degrade organic pollutants in water into water or carbon dioxide, while reducing inorganic pollutants to harmless forms or oxidizing them. Furthermore, the required photocatalysts are non-toxic, inexpensive, stable, and reusable.

[0003] However, before using photocatalytic technology, pollutants usually need to be initially filtered to reduce the load of the photocatalytic equipment, increase the catalytic effect, and extend the service life of the equipment. However, impurities on the filter are inconvenient to clean, resulting in poor filtering effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for treating organic wastewater, aiming to solve the problem in the prior art that impurities on the filter screen of the photocatalytic device are inconvenient to clean, resulting in poor filtering effect.

[0005] To achieve the above object, the present invention adopts the following technical solution: a method for treating organic wastewater, comprising the following steps:

[0006] Step 1: Pour the sewage into the box, and the sewage will be initially filtered through the filter plate;

[0007] Step 2: When too much impurities accumulate on the filter plate, start the motion device to scrape the impurities off and then discharge them through the first slag discharge port;

[0008] Step 3: Turn on the light-emitting device and cooperate with the photocatalyst plate to treat the initially filtered sewage;

[0009] Step 4: When impurities accumulate and adhere to the photocatalyst plate, the mounting frame is moved and the clamping plate is used to scrape off the impurities;

[0010] Step 5: The scraped impurities are collected through the filter tank and then discharged through the second slag discharge port;

[0011] Step 6: Discharge the treated sewage.

[0012] A further technical solution of the present invention is that the organic sewage treatment method adopts an organic sewage treatment equipment, which includes a box and a light-emitting device installed in the box, a filter plate is installed in the box, a scraper is provided above the filter plate, a motion device for moving the scraper along the length direction of the filter plate is installed in the box, the scraper is installed with a limiting component for making the bottom of the scraper close to the filter plate when the scraper moves to the left, and the limiting component causes a gap between the bottom of the scraper and the filter plate when the scraper moves to the right, a rotating roller is provided at the bottom of the filter plate, and an insert that can be inserted into the filter hole of the filter plate is provided on the rotating roller, a connecting plate is fixedly connected to the scraper, and the connecting plate is rotatably connected to the rotating roller, a first slag discharge port is opened on one side of the box, and a slag discharge plate is slidably connected in the first slag discharge port, a fixing component for fixing the slag discharge plate to the box is installed between the box and the slag discharge plate, a reset component is installed between the slag discharge plate and the box, and when the scraper approaches the slag discharge plate, the fixing component releases the slag discharge plate, and the reset component is a tension spring.

[0013] In order to enable the present invention to have the function of making the scraper move along the length direction of the filter plate, a further technical solution of the present invention is that the moving device includes a moving plate slidably connected to the scraper, a screw and a guide rod are rotatably connected in the box body, the screw is engaged with the moving plate, the guide rod is slidably connected to the moving plate, a motor is fixedly installed on one side of the box body, and the output end of the motor is fixedly connected to the screw.

[0014] In order to enable the present invention to have the function of making the scraper stick to or move away from the filter plate according to the different movement directions of the scraper, and at the same time scraping off impurities attached to the photocatalyst plate, a further technical solution of the present invention is that the limiting assembly includes a connecting rod hinged to the connecting plate, and a plurality of parallel photocatalyst plates are arranged under the filter plate, and splints in contact with the photocatalyst plates are arranged on both sides of the photocatalyst plate, and the other end of the connecting rod is hinged to a mounting frame slidably connected to the box body, and the mounting frame and the splint are connected by a first elastic reset member.

[0015] In order to enable the present invention to have the effect of gathering impurities to one side, a further technical solution of the present invention is that a screen is provided on the installation frame, and both sides of the clamping plate are provided with edges that are slidably connected to the installation frame.

[0016] In order to enable the present invention to have the function of cleaning impurities on the aeration plate, a further technical solution of the present invention is that an aeration plate is installed at the bottom of the box body, and bristles in contact with the aeration plate are provided at the bottom of the installation frame.

[0017] In order to make the present invention convenient for cleaning out impurities, a further technical solution of the present invention is that a liftable filter tank is provided at one end of the aeration plate, a scraper is provided on the side of the filter tank close to the aeration plate, a lifting device for controlling the lifting of the filter tank is installed at the bottom of the box body, a second slag discharge port and a slag discharge frame are provided below the filter plate, the slag discharge frame is slidably connected to the box body, a second elastic reset part is connected between the slag discharge frame and the box body, and a motion component for moving the slag discharge frame out of the second slag discharge port is installed on the slag discharge frame.

[0018] In order to enable the present invention to have the function of controlling the lifting and lowering of the filter tank, a further technical solution of the present invention is that the lifting device includes a motor fixedly installed at the bottom of the box body, a screw is fixedly installed at the output end of the motor, a threaded sleeve fixedly connected to the filter tank is engaged on the screw, and a guide rod is fixedly connected to the filter tank in a sliding manner in the box body.

[0019] In order to enable the present invention to move the slag discharge frame out of the second slag discharge port during the process of the connecting plate returning, a further technical solution of the present invention is that the moving component includes a rack fixedly connected to the slag discharge frame, and the rotating roller is coaxially installed with a first gear through a one-way bearing, and the first gear is meshed with a second gear, and the second gear is rotatably installed on the connecting plate through a rotating shaft.

[0020] In order to enable the present invention to fix the slag discharge plate on the box body, a further technical solution of the present invention is that the fixing component includes a clamping block slidably connected to the wall of the box body, one end of the clamping block is provided with a right-angled trapezoidal protrusion, and the other end of the clamping block is provided with an isosceles trapezoidal protrusion that can be offset against the connecting plate, a third elastic reset part is connected between the clamping block and the box body, and a clamping hole is provided on the side panel of the slag discharge plate to allow the right-angled trapezoidal protrusion to be inserted.

[0021] A further technical solution of the present invention is that the reset component is a tension spring.

[0022] The beneficial effects of the present invention are:

[0023] 1. When the present invention is in use, when there are too many impurities accumulated on the filter plate, the movement device is started to move the scraper against the filter plate, thereby scraping the impurities on the filter plate to one side; when the scraper is close to the slag discharge plate, the fixing assembly loosens the slag discharge plate, thereby discharging the impurities; when the scraper is reset, the limit assembly creates a gap between the scraper and the filter plate, thereby preventing the impurities from being scraped to the other side and causing inconvenience in cleaning, thereby causing the slag discharge plate to move along with the scraper, thereby scraping the impurities out of the first slag discharge port; during the movement of the scraper, the rotating roller moves together, thereby inserting the insert into the filter hole of the filter plate, thereby dredging the filter hole and preventing the impurities from being squeezed into the filter hole during the scraping process. This arrangement facilitates cleaning of the filter plate.

[0024] 2. When the present invention is used, during the movement of the scraper, the mounting frame moves so that the clamping plate moves against the photocatalyst plate, thereby scraping off impurities attached to both sides of the photocatalyst plate to avoid affecting the catalytic effect, and at the same time cleaning the aeration plate to avoid affecting the aeration effect.

[0025] 3. When the present invention is used, after the mounting frame moves to the other end, the motor is started to rotate the screw, thereby causing the filter tank to rise, so that impurities are gathered in the filter tank; when the filter tank contacts the slag discharge frame, the motion device is started to reset the mounting frame, thereby causing the rotating roller to rotate in the opposite direction, and the first gear is rotated by the one-way bearing, thereby causing the second gear to rotate, thereby causing the rack to move the slag discharge frame, thereby removing the impurities on the filter tank from the second slag discharge port, thereby further filtering and discharging the impurities that have clumped together. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the internal structure of a specific embodiment of the present invention.

[0027] Figure 2 It is a schematic diagram of the internal structure of a specific embodiment of the present invention from another perspective.

[0028] Figure 3 It is a structural diagram of a specific embodiment of the present invention.

[0029] Figure 4 It is a structural schematic diagram of a card block in a specific embodiment of the present invention.

[0030] Figure 5 It is a schematic diagram of the internal structure of a specific embodiment of the present invention after removing the motion device and the limiting component.

[0031] Figure 6 It is a structural schematic diagram of a splint in a specific embodiment of the present invention.

[0032] In the figure: 1. Box body; 2. Filter plate; 3. Scraper; 4. Rotating roller; 5. Insert block; 6. Connecting plate; 7. Slag discharge plate; 8. Moving plate; 9. Lead screw; 10. Guide rod; 11. Motor; 12. Connecting rod; 13. Photocatalyst plate; 14. Clamping plate; 15. Mounting frame; 16. Screen; 17. Aeration plate; 18. Bristles; 19. Block; 20. Third elastic reset member; 21. Motor; 22. Screw; 23. Guide rod; 24. Slag discharge frame; 25. Second elastic reset member; 26. Rack; 27. First gear; 28. Second gear; 29. ​​Tension spring; 30. Filter tank; 31. First elastic reset member; 32. One-way bearing; 33. Light-emitting device; 34. Scraper. DETAILED DESCRIPTION

[0033] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0034] like Figure 1-6 As shown, a method for treating organic wastewater comprises the following steps:

[0035] Step 1: Pour the sewage into the box 1, and the sewage is initially filtered through the filter plate 2;

[0036] Step 2: When too much impurities accumulate on the filter plate 2, start the motion device to scrape the impurities off and then discharge them through the first slag discharge port;

[0037] Step 3: Turn on the light emitting device 33 and cooperate with the photocatalyst plate 13 to treat the initially filtered sewage;

[0038] Step 4: When impurities accumulate and adhere to the photocatalyst plate 13, the mounting frame 15 is moved and the clamping plate 14 is used to scrape off the impurities;

[0039] Step 5: The scraped impurities are collected through the filter tank 30 and then discharged through the second slag discharge port;

[0040] Step 6: Discharge the treated sewage.

[0041] The organic sewage treatment method adopts an organic sewage treatment equipment, which includes a box 1 and a light-emitting device 33 installed in the box 1, a filter plate 2 is installed in the box 1, a scraper 3 is arranged above the filter plate 2, and a motion device for moving the scraper 3 along the length direction of the filter plate 2 is installed in the box 1. The scraper 3 is installed with a limiting component that makes the bottom of the scraper 3 close to the filter plate 2 when the scraper 3 moves to the left. The limiting component makes a gap between the bottom of the scraper 3 and the filter plate 2 when the scraper 3 moves to the right, and the filter plate 2 is A rotating roller 4 is provided at the bottom, and an insert 5 that can be inserted into the filter hole of the filter plate 2 is provided on the rotating roller 4. A connecting plate 6 is fixedly connected to the scraper 3, and the connecting plate 6 is rotatably connected to the rotating roller 4. A first slag discharge port is opened on one side of the box body 1, and a slag discharge plate 7 is slidably connected in the first slag discharge port. A fixing component for fixing the slag discharge plate 7 on the box body 1 is installed between the box body 1 and the slag discharge plate 7, and a reset component is installed between the slag discharge plate 7 and the box body 1. When the scraper 3 approaches the slag discharge plate 7, the fixing component loosens the slag discharge plate 7. The reset component is a tension spring 29.

[0042] In this specific embodiment, when there are too many impurities accumulated on the filter plate 2, the movement device is started to move the scraper against the filter plate 2, so that the impurities on the filter plate 2 are scraped to one side. When the scraper 3 is close to the slag discharge plate 7, the fixing component loosens the slag discharge plate 7, thereby discharging the impurities. When the scraper is reset, the limit component creates a gap between the scraper 3 and the filter plate 2 to avoid scraping the impurities to the other side, which makes it inconvenient to clean. The slag discharge plate 7 moves with the scraper 3, so that the impurities are scraped out of the first slag discharge port. During the movement of the scraper 3, the rotating roller 4 moves together, so that the insert 5 is inserted into the filter hole of the filter plate 2, thereby dredging the filter hole and avoiding the impurities being squeezed into the filter hole during the scraping process. This arrangement facilitates the cleaning of the filter plate 2.

[0043] Specifically, the motion device includes a motion plate 8 that is slidingly connected to the scraper 3, and a screw 9 and a guide rod 10 are rotatably connected in the box body 1. The screw 9 is engaged with the motion plate 8, and the guide rod 10 is slidingly connected to the motion plate 8. A motor 11 is fixedly installed on one side of the box body 1, and the output end of the motor 11 is fixedly connected to the screw 9. Starting the motor 11 rotates the screw 9, thereby causing the motion plate 8 to move with the scraper 3.

[0044] Specifically, the limiting assembly includes a connecting rod 12 hinged to the connecting plate 6, and a plurality of parallel photocatalyst plates 13 are arranged under the filter plate 2. Both sides of the photocatalyst plate 13 are provided with a clamping plate 14 in contact with the photocatalyst plate 13. The other end of the connecting rod 12 is hinged to a mounting frame 15 slidably connected to the box body 1, and the mounting frame 15 is connected to the clamping plate 14 by a first elastic reset member 31. When the scraper 3 moves to the left, since the connecting plate 6 is hinged to the connecting rod 12, and the connecting rod 12 is hinged to the mounting frame 15, the bottom of the scraper 3 is pressed against the filter plate 2 under the action of resistance. When the scraper 3 moves to the right, the connecting rod 12 presses against the connecting plate 6, so that the scraper 3 rises to a position against the moving plate 8, thereby avoiding scraping impurities to the other side when the scraper 3 is reset, which is inconvenient to clean.

[0045] Furthermore, a screen 16 is provided on the installation frame 15 , and both sides of the clamping plate 14 are provided with edging that is slidably connected to the installation frame 15 . The edging can prevent impurities from entering the gap between the clamping plate 14 and the installation frame 15 .

[0046] Furthermore, an aeration plate 17 is installed at the bottom of the box body 1, and a brush 18 in contact with the aeration plate 17 is provided at the bottom of the mounting frame 15. During the movement of the scraper 3, the mounting frame 15 moves to make the clamping plate 14 move against the photocatalyst plate 13, thereby scraping off impurities attached to both sides of the photocatalyst plate 13 to avoid affecting the catalytic effect, and at the same time cleaning the aeration plate 17 to avoid affecting the aeration effect.

[0047] Furthermore, a liftable filter trough 30 is provided at one end of the aeration plate 17, and a scraper 34 is provided on the side of the filter trough 30 close to the aeration plate 17. A lifting device for controlling the lifting and lowering of the filter trough 30 is installed at the bottom of the box body 1, and a second slag discharge port and a slag discharge frame 24 are provided below the filter plate 2. The slag discharge frame 24 is slidably connected to the box body 1, and a second elastic reset member 25 is connected between the slag discharge frame 24 and the box body 1. A motion component for moving the slag discharge frame 24 out of the second slag discharge port is installed on the slag discharge frame 24.

[0048] Specifically, the lifting device includes a motor 21 fixedly mounted on the bottom of the box body 1, a screw 22 fixedly mounted on the output end of the motor 21, a threaded sleeve engaged with the screw 22 and fixedly connected to the filter tank 30, and a guide rod 23 fixedly connected to the filter tank 30 in a sliding manner is fixedly connected inside the box body 1.

[0049] Specifically, the motion component includes a rack 26 fixedly connected to the slag discharge frame 24, and the rotating roller 4 is coaxially mounted with a first gear 27 through a one-way bearing 32. The first gear 27 is meshed with a second gear 28, and the second gear 28 is rotatably mounted on the connecting plate 6 through a rotating shaft. When the mounting frame 15 moves to the other end, the motor 21 is started to rotate the screw 22, thereby causing the filter tank 30 to rise, so that impurities are accumulated in the filter tank 30. When the filter tank 30 contacts the slag discharge frame 24, the motion device is started to reset the mounting frame 15, so that the rotating roller 4 rotates in the opposite direction, and the first gear 27 is rotated through the one-way bearing 32, thereby rotating the second gear 28, so that the rack 26 moves with the slag discharge frame 24, thereby removing the impurities on the filter tank 30 from the second slag discharge port, thereby further filtering and discharging the impurities that have aggregated.

[0050] Specifically, the fixing assembly includes a block 19 slidably connected to the wall of the box body 1, one end of the block 19 is provided with a right-angled trapezoidal protrusion, and the other end of the block 19 is provided with an isosceles trapezoidal protrusion that can be abutted against the connecting plate 6, and a third elastic reset member 20 is connected between the block 19 and the box body 1, and a clamping hole is provided on the side panel of the slag discharge plate 7 to allow the right-angled trapezoidal protrusion to be inserted. When the connecting plate 6 moves to the position against the isosceles trapezoidal protrusion, the connecting plate 6 continues to move to make the block 19 slide, thereby making the right-angled trapezoidal protrusion disengage from the clamping hole, so that the connecting plate 6 can push the slag discharge plate 7 to move, thereby discharging impurities. When the connecting plate 6 is reset, the side panel of the slag discharge plate 7 causes the right-angled trapezoidal protrusion to enter the clamping hole under the action of the reset assembly, thereby preventing the slag discharge plate 7 from moving when sewage is poured, causing water leakage.

[0051] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0053] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A method for treating organic wastewater, characterized in that: The following steps are involved: Step 1: Pour the sewage into the box (1), and the sewage is initially filtered through the filter plate (2); Step 2: When too much impurities are accumulated on the filter plate (2), the motion device is activated to move the scraper (3) along the length direction of the filter plate (2) to scrape off the impurities and then discharge them through the first slag discharge port; Step 3: Turn on the light emitting device (33) and cooperate with the photocatalyst plate (13) to treat the initially filtered sewage; Step 4: When impurities accumulate and adhere to the photocatalyst plate (13), the mounting frame (15) is moved, and the clamping plate (14) mounted on the mounting frame is used to scrape off the impurities; Step 5: The scraped impurities are collected through the filter tank (30) and then discharged through the second slag discharge port; Step 6: Discharge the treated sewage; A light emitting device (33) is provided in the box (1), a filter plate (2) is installed in the box (1), a scraper (3) is provided above the filter plate (2), a motion device for moving the scraper (3) along the length direction of the filter plate (2) is installed in the box (1), and a limiting component is installed on the scraper (3) so that the bottom of the scraper (3) is pressed against the filter plate (2) when the scraper (3) moves to the left, and the limiting component is so that the scraper (3) moves to the right. There is a gap between the bottom of the filter plate (3) and the filter plate (2), a rotating roller (4) is provided at the bottom of the filter plate (2), and an insert (5) is provided on the rotating roller (4) that can be inserted into the filter hole of the filter plate (2), a connecting plate (6) is fixedly connected to the scraper (3), and the connecting plate (6) is rotatably connected to the rotating roller (4), a first slag discharge port is opened on one side of the box body (1), and a slag discharge plate (7) is slidably connected in the first slag discharge port, and the box body (1) and A fixing assembly for fixing the slag discharge plate (7) to the box body (1) is installed between the slag discharge plate (7), and a reset assembly is installed between the slag discharge plate (7) and the box body (1). When the scraper (3) approaches the slag discharge plate (7), the fixing assembly releases the slag discharge plate (7). The reset assembly is a tension spring (29). The limit assembly includes a connecting rod (12) hinged to the connecting plate (6). A plurality of parallel photocatalyst plates (13) are arranged below the filter plate (2). Both sides of the photocatalyst plate (13) are provided with a clamping plate (14) in contact with the photocatalyst plate (13); the other end of the connecting rod (12) is hinged with a mounting frame (15) slidably connected to the box body (1); the mounting frame (15) and the clamping plate (14) are connected by a first elastic reset member (31); an aeration plate (17) is installed at the bottom of the box body (1); and bristles (18) in contact with the aeration plate (17) are provided at the bottom of the mounting frame (15).

2. The method for treating organic wastewater according to claim 1, wherein: The motion device comprises a motion plate (8) slidably connected to the scraper (3); a lead screw (9) and a guide rod (10) are rotatably connected in the box (1); the lead screw (9) is engaged with the motion plate (8); the guide rod (10) is slidably connected to the motion plate (8); a motor (11) is fixedly mounted on one side of the box (1); and the output end of the motor (11) is fixedly connected to the lead screw (9).

3. The method for treating organic wastewater according to claim 2, wherein: A screen (16) is provided on the installation frame (15), and both sides of the clamping plate (14) are provided with edges that are slidably connected to the installation frame (15).

4. The method for treating organic wastewater according to claim 3, wherein: A liftable filter trough (30) is provided at one end of the aeration plate (17), a scraper (34) is provided on one side of the filter trough (30) close to the aeration plate (17), a lifting device for controlling the lifting of the filter trough (30) is installed at the bottom of the box body (1), a second slag discharge port and a slag discharge frame (24) are provided below the filter plate (2), the slag discharge frame (24) is slidably connected to the box body (1), a second elastic reset member (25) is connected between the slag discharge frame (24) and the box body (1), and a motion component for moving the slag discharge frame (24) out of the second slag discharge port is installed on the slag discharge frame (24).

5. The method for treating organic wastewater according to claim 4, wherein: The lifting device comprises a motor (21) fixedly mounted on the bottom of the box (1); a screw (22) is fixedly mounted on the output end of the motor (21); a threaded sleeve fixedly connected to the filter tank (30) is engaged on the screw (22); and a guide rod (23) is fixedly connected to the filter tank (30) in a sliding manner within the box (1).

6. The method for treating organic wastewater according to claim 5, wherein: The motion assembly includes a rack (26) fixedly connected to the slag discharge frame (24); the rotating roller (4) is coaxially mounted with a first gear (27) via a one-way bearing (32); a second gear (28) is meshed with the first gear (27); and the second gear (28) is rotatably mounted on the connecting plate (6) via a rotating shaft.

7. The method for treating organic wastewater according to any one of claims 1 to 6, characterized in that: The fixing assembly comprises a clamping block (19) slidably connected to the wall of the box body (1), one end of the clamping block (19) is provided with a right-angled trapezoidal protrusion, the other end of the clamping block (19) is provided with an isosceles trapezoidal protrusion that can abut against the connecting plate (6), a third elastic reset member (20) is connected between the clamping block (19) and the box body (1), and a clamping hole for inserting the right-angled trapezoidal protrusion is provided on the side plate of the slag discharge plate (7).

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