Cooling device of condenser

Abstract

A condenser cooling device comprises a box body, an air inlet is formed in the bottom of one side of the box body, a suction fan is arranged at the air inlet, the suction fan is fixedly installed on the box body, an air outlet is formed in the top of the box body, a slag discharging opening is formed in the bottom of the box body, an internal thread cover is installed on the inner circumference of the slag discharging opening in a threaded fit mode, and a plurality of heat exchange coil pipes distributed front and back are arranged in the box body. The heat exchange coil pipe is composed of a straight pipe and a bent pipe, a plurality of water spraying pipes are fixedly installed at the top of the box body corresponding to the heat exchange coil pipe, one end of each water spraying pipe is fixedly connected with the inner wall of the box body, and the other end of each water spraying pipe extends out of the box body. The condenser is simple in structure and ingenious in conception, the contact time of cold water and the straight pipe can be prolonged through water storage of the arc-shaped plate and rotation of the straight pipe, the cooling effect of the condenser is further improved, in the rotation process of the straight pipe, the scraper can scrape water scale on the surface of the straight pipe, the condensation effect of the condenser is prevented from being affected by the water scale on the surface of the straight pipe, and the service life of the condenser is prolonged. And market requirements can be met.

Description

Technical Field

[0001] The utility model belongs to the field of condensers, in particular to a condenser cooling device. Background Art

[0002] A condenser is a device that cools high-temperature gas into liquid or a gas-liquid mixture. During the cooling process of the high-temperature gas, the high-temperature gas exchanges heat with the air to liquefy the high-temperature gas. The liquefaction of the high-temperature gas releases a large amount of heat, which increases the temperature of the condenser. The increase in the condenser temperature will affect the subsequent condensation effect, so a condenser cooling device is needed. The patent with authorization announcement number CN219810298U: "A Condenser Cooling Device" discloses a device for cooling the condenser, but the contact time between the cold water and the shell and the heat sink fins in the device is short, and the cooling effect is limited. After long-term use, scale will form on the surface of the shell and the heat sink fins, resulting in poor condensation effect of the condenser. Therefore, we designed a condenser cooling device. Utility Model Content

[0003] The utility model provides a condenser cooling device, which is used to solve the defects in the prior art.

[0004] The utility model is realized through the following technical solutions:

[0005] A condenser cooling device comprises a box body, an air inlet is provided at the bottom of one side of the box body, a suction fan is arranged at the air inlet, the suction fan is fixedly installed on the box body, an air outlet is provided at the top of the box body, a slag discharge port is provided at the bottom of the box body, an inner thread cover is installed in cooperation with the inner circumference thread of the slag discharge port, a plurality of heat exchange coils distributed front and back are arranged in the box body, the heat exchange coils are composed of a straight pipe and a bent pipe, a plurality of water spray pipes are fixedly installed on the top of the box body corresponding to the heat exchange coils, one end of the water spray pipes is fixedly connected to the inner wall of the box body, the other end of the water spray pipes extends out of the box body, one end of the water spray pipes extending out of the box body is connected to a water inlet pipe, a butterfly valve is connected to the water inlet pipe, a plurality of nozzles are connected to the water spray pipe, and the The invention is characterized in that two ends of the straight pipe extend out of the box body and are rotatably installed on the box body, the two ends of the heat exchange coil are rotatably installed with the air intake hose and the liquid outlet hose through the sealed bearings in turn, the air intake hose and the liquid outlet hose are fixedly installed on the box body through connecting rods respectively, the ends of the bent pipe are rotatably connected with the ends of the corresponding straight pipes through the sealed bearings respectively, the box body is provided with a driving device for driving several straight pipes to rotate synchronously, coaxial arc plates are fixedly provided under the straight pipes, the two ends of the arc plates are fixedly connected with the inner wall of the box body respectively, and scrapers are fixedly installed on the front side of the inner periphery of the arc plates respectively, the tip of the scraper is in contact with the outer periphery of the corresponding straight pipe, and the linear velocity direction of the point where the straight pipe contacts the corresponding scraper when rotating is toward the rear side.

[0006] A condenser cooling device as described above, wherein the driving device includes a plurality of gear rings, the gear rings correspond to the straight tubes one by one, the gear rings are coaxial and fixedly mounted on one end of the corresponding straight tube, two adjacent gear rings in the same row are connected by a first gear transmission, and the first gears are rotatably mounted on the casing, two adjacent gear rings in one row are connected by a second gear transmission, and the second gears are rotatably mounted on the casing, a coaxial motor is fixedly mounted on one of the first gears, and the motor is fixedly mounted on the casing.

[0007] As described above, a condenser cooling device has a water outlet hole at the bottom of the box body, the inner circumference of the water outlet hole is connected to one end of a first water pipe, the other end of the first water pipe is connected to a water inlet pipe of a water pump, the water pump is fixedly installed on the box body, the water outlet pipe of the water pump is connected to one end of a second water pipe, the other end of the second water pipe is connected to a diversion pipe, the diversion pipe is fixedly installed on the box body, both ends of the diversion pipe are closed respectively, and one end of the water spray pipe extending out of the box body is connected to the diversion pipe respectively.

[0008] In the condenser cooling device as described above, a filter screen is fixedly installed on the inner periphery of the water outlet, and the top of the filter screen is flush with the bottom of the inner wall of the box body.

[0009] A condenser cooling device as described above, wherein a push plate is slidably installed at the bottom of the box body, a threaded through hole is provided on the push plate, the inner circumferential thread of the threaded through hole is cooperated to install a reciprocating screw, one end of the reciprocating screw is rotatably installed on the inner wall of the box body through a bearing, the other end of the reciprocating screw extends out of the box body and is rotatably installed on the box body, the end of the reciprocating screw extending out of the box body is rotatably installed on a coaxial third gear through a one-way bearing, the third gear is connected to one of the gear rings through a fourth gear transmission, and the fourth gear is rotatably installed on the box body.

[0010] In the condenser cooling device as described above, the top of the push plate is provided with an inclined surface, and the side of the inclined surface close to the slag discharge port is lower than the side away from the slag discharge port.

[0011] The advantages of the utility model are: the utility model has a simple structure and ingenious design, and through the water storage of the arc plate and the rotation of the straight tube, the contact time between the cold water and the straight tube can be prolonged, thereby improving the cooling effect of the condenser; and in the process of the rotation of the straight tube, the scraper can scrape off the scale on the surface of the straight tube to prevent the condensation effect of the condenser from being affected by the scale on the surface of the straight tube, which can meet market demand and is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is a structural schematic diagram of the utility model; Figure 2 yes Figure 1 A-direction view; Figure 3 yes Figure 1 B-direction view; Figure 4 yes Figure 1 Partial enlarged view of Ⅰ; Figure 5 yes Figure 2 Ⅱ is a partial enlarged view of .

[0014] Figure markings: 1. box body, 2. heat exchange coil, 3. straight pipe, 4. bent pipe, 5. water spray pipe, 6. water inlet pipe, 7. butterfly valve, 8. nozzle, 9. air inlet hose, 10. air outlet hose, 11. arc plate, 12. scraper, 13. air inlet, 14. suction fan, 15. air outlet, 20. gear ring, 21. first gear, 22. second gear, 23. motor, 30. water outlet, 31. first water pipe, 32. water pump, 33. second water pipe, 34. diverter pipe, 40. filter screen, 50. push plate, 51. threaded through hole, 52. reciprocating screw, 53. third gear, 54. fourth gear, 55. slag discharge port, 56. internal thread cover. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] A condenser cooling device, such as Figure 1 , 2, 3, 4, and 5, comprising a box body 1, an air inlet 13 is provided at the bottom of one side of the box body 1, a suction fan 14 is provided at the air inlet 13, the suction fan 14 is fixedly installed on the box body 1, an air outlet 15 is provided at the top of the box body 1, a slag discharge port 55 is provided at the bottom of the box body 1, an inner thread of the slag discharge port 55 is matched with an inner thread cover 56, a plurality of heat exchange coils 2 distributed front and back are provided in the box body 1, the heat exchange coils 2 are composed of a straight pipe 3 and a bent pipe 4, a plurality of water spray pipes 5 are fixedly installed on the top of the box body 1 corresponding to the heat exchange coils 2, one end of the water spray pipes 5 is divided into The inner wall of the box body 1 is fixedly connected to each other, and the other end of the water spray pipe 5 extends out of the box body 1 respectively. The box body 1 is provided with several reserved holes corresponding to the water spray pipe 5. The other end of the water spray pipe 5 extends out of the box body 1 through the corresponding reserved holes. The outer periphery of the water spray pipe 5 is fixedly connected to the inner periphery of the corresponding reserved hole. One end of the water spray pipe 5 extending out of the box body 1 is connected to the water inlet pipe 6, which is connected to the butterfly valve 7, and the water spray pipe 5 is connected to the installation of several nozzles 8. The characteristics are as follows: the two ends of the straight pipe 3 extend out of the box body 1 and are rotatably installed on the box body 1. The straight pipe 3 The two ends extend out of the box body 1 through the reserved holes on the box body 1, and are rotatably installed in the corresponding reserved holes through sealed bearings. The two ends of the heat exchange coil 2 are rotatably installed with an air intake hose 9 and a liquid outlet hose 10 through sealed bearings in turn. The air intake hose 9 and the liquid outlet hose 10 are fixedly installed on the box body 1 through connecting rods. The ends of the bent pipe 4 are rotatably connected with the ends of the corresponding straight pipes 3 through sealed bearings. A driving device for driving several straight pipes 3 to rotate synchronously is provided on the box body 1. Coaxial arc plates 11 are fixedly provided below the straight pipes 3. The arc plates 11 are One quarter of the complete circular tube, the arc plate 11 wraps up the lower rear part of the corresponding straight tube 3, the intersection of the plane where the front side and the upper side of the same arc plate 11 are located coincides with the axis of the corresponding straight tube 3, the two ends of the arc plate 11 are respectively fixedly connected to the inner wall of the box body 1, and the front side of the inner periphery of the arc plate 11 is respectively fixedly installed with a scraper 12, the front side of the scraper 12 is flush with the front side of the corresponding arc plate 11, and the tip of the scraper 12 fits the outer periphery of the corresponding straight tube 3. When the straight tube 3 rotates, the linear velocity direction of the point contacted with the corresponding scraper 12 is toward the rear side. The utility model has a simple structure and ingenious design. Through the water storage of the arc plate 11 and the rotation of the straight tube 3, the contact time between the cold water and the straight tube 3 can be extended, thereby improving the cooling effect of the condenser, and during the rotation of the straight tube 3, the scraper 12 can scrape off the scale on the surface of the straight tube 3 to prevent the scale on the surface of the straight tube 3 from affecting the condensation effect of the condenser, which can meet market demand and is suitable for promotion.When using the utility model, the suction fan 14 is started, and the suction fan 14 sucks the outside air into the box body 1 through the air inlet 13, the butterfly valve 7 is opened, and cold water is supplied to the water spray pipe 5 through the water inlet pipe 6, and then the high-temperature gas is introduced into the heat exchange coil 2 through the air intake hose, and the cold water in the water spray pipe 5 is sprayed out through the nozzle 8. The cold water sprayed from the nozzle 8 contacts the outer periphery of the straight pipe 3, and the cold water exchanges heat with the high-temperature gas in the heat exchange coil 2 to liquefy the high-temperature gas. Heat is released during the liquefaction of the high-temperature gas, and the liquefied high-temperature gas is discharged through the liquid outlet hose 10. The air in the box body 1 can bring the heat released by the high-temperature gas out of the box body 1 through the air outlet 15, thereby reducing the temperature in the box body 1, and the cold water sprayed from the nozzle 8 can be accumulated in the curved plate 11 and the corresponding scraper In the cavity surrounded by the plate 12, several straight pipes 3 are driven to rotate synchronously through a driving device, so that the linear velocity direction of the point where the straight pipe 3 contacts the corresponding scraper 12 when rotating is toward the rear side, preventing scale from falling into the space surrounded by the arc plate 11 and the scraper 12. The rotation of the straight pipe 3 can ensure that the outer periphery of the straight pipe 3 is evenly in contact with the cold water accumulated in the cavity surrounded by the arc plate 11 and the corresponding scraper 12, and the contact time between the straight pipe 3 and the cold water is increased. Since the scraper 12 fits the outer periphery of the straight pipe 3, the scraper 12 can scrape off the scale on the outer periphery of the straight pipe 3 during the rotation of the straight pipe 3, and the scraped scale falls to the bottom of the box body 1, and the internal threaded cover 56 is unscrewed on the inner periphery of the slag discharge port 55, and the scale at the bottom of the box body 1 is cleared out through the slag discharge port 55.

[0017] Specifically, as shown in the figure, the driving device described in this embodiment includes a plurality of gear rings 20, which correspond to the straight tubes 3 one by one. The gear rings 20 are coaxial and fixedly mounted on one end of the corresponding straight tube 3. Two adjacent gear rings 20 in the same row are connected by a first gear 21, and the first gears 21 are rotatably mounted on the housing 1. One side of the first gear 21 is fixedly connected to one end of the coaxial first rotating shaft, and the other end of the first rotating shaft is rotatably mounted on the housing 1 through a bearing. Two adjacent gear rings 20 in one row are connected by a second gear 22, and the second gears 22 are rotatably mounted on the housing 1. One side of the second gear 22 is fixedly connected to one end of the coaxial second rotating shaft, and the other end of the second rotating shaft is rotatably mounted on the housing 1 through a bearing. A coaxial motor 23 is fixedly mounted on one of the first gears 21, and the motor 23 is fixedly mounted on the housing 1. Start the motor 23 to make the output shaft of the motor 23 rotate in the forward direction. The rotation of the output shaft of the motor 23 drives the first gear 21 fixedly connected thereto to rotate, and the first gear 21 drives the two gear rings 20 meshing with it to rotate, and then drives all the gear rings 21 in the same column to rotate synchronously through another first gear 21 in the same column, and then drives all the straight tubes 3 on the same heat dissipation coil 2 to rotate synchronously. The rotation of one gear ring 20 in the column drives the remaining gear rings 20 in the same column with the second gear 22 to rotate, and then drives the gear rings 20 in the remaining columns to rotate through the first gear 21. The synchronous rotation of all the gear rings 20 drives all the straight tubes 3 to rotate synchronously. The positive rotation of the output shaft of the motor 23 ensures that the linear velocity direction of the point where all the straight tubes 3 contact the corresponding scraper 12 when rotating is toward the rear side.

[0018] Specifically, as shown in the figure, a water outlet hole 30 is provided at the bottom of the box body 1 of the present embodiment, the inner circumference of the water outlet hole 30 is connected to one end of a first water pipe 31, the other end of the first water pipe 31 is connected to a water inlet pipe of a water pump 32, the water pump 32 is fixedly installed on the box body 1, the water outlet pipe of the water pump 32 is connected to one end of a second water pipe 33, the other end of the second water pipe 33 is connected to a diverter pipe 34, one end of the diverter pipe 34 is in front and the other end is in the back, the diverter pipe 34 is fixedly installed on the box body 1, the two ends of the diverter pipe 34 are respectively closed, and one end of the water spray pipe 5 extending out of the box body 1 is respectively connected to the diverter pipe 34. The water sprayed from the nozzle 8 falls on the bottom of the box body 1, the butterfly valve 7 is closed, and the water pump 32 is started. Under the action of the water pump 32, the water at the bottom of the box body 1 enters the water pump 32 through the water outlet hole 30, the first water pipe 31 and the water inlet pipe of the water pump 32, and then enters the diversion pipe 34 through the water outlet pipe of the water pump 32 and the second water pipe 33. The water in the diversion pipe 34 enters several water spray pipes 5 and is then sprayed out by the nozzle 8, thereby saving water resources. When the amount of water at the bottom of the box body 1 is small, the butterfly valve 7 is opened, and water is replenished into the corresponding water spray pipe 5 through the water inlet pipe 6.

[0019] Further, as shown in the figure, a filter screen 40 is fixedly installed on the inner periphery of the water outlet 30 in this embodiment, and the top of the filter screen 40 is flush with the bottom of the inner wall of the box body 1. The filter screen 40 can prevent scale and other impurities at the bottom of the box body 1 from entering the first water pipe 31, thereby preventing the first water pipe 31 from being blocked.

[0020] Further, as shown in the figure, a push plate 50 is slidably installed at the bottom of the box body 1 described in this embodiment, and the front and rear sides and the lower side of the push plate 50 are respectively in sliding contact with the inner wall of the box body 1, and the side of the push plate 50 away from the slag discharge port 55 is in contact with the inner wall of the box body 1. A threaded through hole 51 is provided on the push plate 50, and the inner circumferential thread of the threaded through hole 51 is cooperated to install a reciprocating screw 52, ​​one end of the reciprocating screw 52 is rotatably installed on the inner wall of the box body 1 through a bearing, and the other end of the reciprocating screw 52 extends out of the box body 1 and is rotatably installed on the box body, and the other end of the reciprocating screw 52 passes through the reserved hole on the box body 1 and is rotatably installed in the reserved hole through a sealed bearing, and the end of the reciprocating screw 52 extending out of the box body 1 is rotatably installed on the coaxial third gear 53 through a one-way bearing, the third gear 53 is transmission-connected to one of the gear rings 20 through a fourth gear 54, the fourth gear 54 is rotatably installed on the box body 1, one side of the fourth gear 54 is fixedly connected to one end of the third rotating shaft, and the other end of the third rotating shaft is rotatably installed on the box body 1 through a bearing. When the dirt on the outer periphery of the straight tube 3 is scraped off and the condenser is not used, the internal thread cover 56 is unscrewed from the inner periphery of the slag discharge port 55, and the output shaft of the control motor 23 is controlled to rotate in the opposite direction. Similarly, the motor 23 can drive all the gear rings 20 and the straight tubes 3 to rotate synchronously. When the straight tubes 3 rotate, the linear velocity direction of the point in contact with the corresponding scraper 12 is toward the front side. Since the dirt on the outer periphery of the straight tube 3 is scraped off at this time, when the straight tube 3 rotates, no dirt will be scraped off by the scraper 12 and fall on the arc plate 11; the gear ring 20 rotates to drive the third gear through the fourth gear 54 53 and the reciprocating screw 52 rotate, and the rotation of the reciprocating screw 52 drives the push plate 50 to move rightward. The rightward movement of the push plate 50 can push the scale at the bottom of the box body 1 to the right, until the scale is pushed to the slag discharge port 55, and the scale in the box body 1 is discharged from the box body 1 through the slag discharge port 55. As the reciprocating screw 52 continues to rotate, the push plate 50 moves to the left and resets until the left side of the push plate 50 is in contact with the left side of the inner wall of the box body 1, and the motor 23 is powered off. The scale accumulated on the bottom of the box body 1 is cleaned, and then the internal threaded cover 56 is threadedly installed on the inner periphery of the slag discharge port 55.

[0021] Furthermore, as shown in the figure, the top of the push plate 50 of this embodiment is provided with an inclined surface, and the side of the inclined surface close to the slag discharge port 55 is lower than the side away from the slag discharge port 55. The inclined surface on the top of the push plate 50 can prevent the scraped scale from falling on the top of the push plate 50, so that the scale falling on the top of the push plate 50 can slide to the right side of the push plate 50, which is convenient for the push plate 50 to clean the scale.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A condenser cooling device, comprising a box (1), an air inlet (13) is provided at the bottom of one side of the box (1), a suction fan (14) is provided at the air inlet (13), the suction fan (14) is fixedly mounted on the box (1), an air outlet (15) is provided at the top of the box (1), a slag discharge port (55) is provided at the bottom of the box (1), an inner thread of the slag discharge port (55) is matched with an inner thread cover (56), a plurality of heat exchange coils (2) are arranged in the box (1) and are distributed front and back, and the heat exchange coils (2) The heat exchanger comprises a straight pipe (3) and a curved pipe (4). A plurality of water spray pipes (5) are fixedly installed on the top of the box (1) corresponding to the heat exchange coil (2). One end of the water spray pipe (5) is fixedly connected to the inner wall of the box (1). The other end of the water spray pipe (5) extends out of the box (1). One end of the water spray pipe (5) extending out of the box (1) is connected to a water inlet pipe (6). The water inlet pipe (6) is connected to a butterfly valve (7). The water spray pipe (5) is connected to a plurality of nozzles (8). The heat exchanger comprises: The two ends of the straight tube (3) extend out of the box body (1) and are rotatably mounted on the box body (1). The two ends of the heat exchange coil (2) are rotatably mounted with an air intake hose (9) and a liquid outlet hose (10) through sealing bearings in turn. The air intake hose (9) and the liquid outlet hose (10) are fixedly mounted on the box body (1) through connecting rods. The ends of the curved tube (4) are rotatably connected to the ends of the corresponding straight tubes (3) through sealing bearings. The box body (1) is provided with a driving device for driving a plurality of straight tubes (3) to rotate synchronously. Coaxial arc plates (11) are fixedly mounted below the straight tubes (3). The two ends of the arc plates (11) are fixedly connected to the inner wall of the box body (1). Scrapers (12) are fixedly mounted on the front side of the inner periphery of the arc plates (11). The tip of the scraper (12) fits the outer periphery of the corresponding straight tube (3).

2. A condenser cooling device according to claim 1, characterized in that: The driving device comprises a plurality of gear rings (20), the gear rings (20) corresponding to the straight tubes (3) one by one, the gear rings (20) being coaxially and fixedly mounted on one end of the corresponding straight tube (3), two adjacent gear rings (20) in the same row being transmission connected via a first gear (21), the first gears (21) being rotatably mounted on the housing (1), two adjacent gear rings (20) in one row being transmission connected via a second gear (22), the second gears (22) being rotatably mounted on the housing (1), a coaxial motor (23) being fixedly mounted on one of the first gears (21), the motor (23) being fixedly mounted on the housing (1).

3. A condenser cooling device according to claim 1, characterized in that: A water outlet hole (30) is provided at the bottom of the box body (1), the inner circumference of the water outlet hole (30) is connected to one end of a first water delivery pipe (31) installed, the other end of the first water delivery pipe (31) is connected to a water inlet pipe installed with a water pump (32), the water pump (32) is fixedly installed on the box body (1), the water outlet pipe of the water pump (32) is connected to one end of a second water delivery pipe (33) installed, the other end of the second water delivery pipe (33) is connected to a diverter pipe (34) installed, the diverter pipe (34) is fixedly installed on the box body (1), both ends of the diverter pipe (34) are respectively closed, and one end of the water spray pipe (5) extending out of the box body (1) is respectively connected to the diverter pipe (34).

4. A condenser cooling device according to claim 3, characterized in that: A filter screen (40) is fixedly mounted on the inner periphery of the water outlet hole (30), and the top of the filter screen (40) is flush with the bottom of the inner wall of the box body (1).

5. A condenser cooling device according to claim 2, characterized in that: A push plate (50) is slidably mounted on the bottom of the box body (1), and a threaded through hole (51) is provided on the push plate (50). The inner circumferential thread of the threaded through hole (51) is matched to mount a reciprocating screw (52). One end of the reciprocating screw (52) is rotatably mounted on the inner wall of the box body (1) through a bearing, and the other end of the reciprocating screw (52) extends out of the box body (1) and is rotatably mounted on the box body. The end of the reciprocating screw (52) extending out of the box body (1) is rotatably mounted on a coaxial third gear (53) through a one-way bearing. The third gear (53) is transmission-connected to one of the gear rings (20) through a fourth gear (54), and the fourth gear (54) is rotatably mounted on the box body (1).

6. A condenser cooling device according to claim 5, characterized in that: The top of the push plate (50) is provided with an inclined surface, and the side of the inclined surface close to the slag discharge port (55) is lower than the side away from the slag discharge port (55).

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