Waste heat recovery equipment of non-ferrous metal smelting furnace

Abstract

The invention relates to the technical field of waste heat recovery, in particular to waste heat recovery equipment of a non-ferrous metal smelting furnace, which comprises a shell, a heat conduction pipe, a hot water cylinder and a cold water cylinder, and further comprises a supporting plate, a fixed plate, an air cylinder, a transmission assembly, a transmission rod, a positioning scraping plate, a movable scraping plate and an adjusting assembly, the fixed plate array is connected to the upper side of the supporting plate, the air cylinder is connected to the front end of the left side of the fixed plate, the transmission assembly is connected to the rear side of the air cylinder, the transmission rod is connected with the transmission assembly, the positioning scraper plate array is connected to the circumferential face of the transmission rod, and the movable scraper plate is connected to the front side of the positioning scraper plate. According to the device, thin impurities are reserved on the windward side of the heat conduction pipe, when airflow flows, the impurities can form a protection layer on the heat conduction pipe, then abrasion of the heat conduction pipe caused by flowing of the impurities is avoided, and the purpose of guaranteeing stable use of the device is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat recovery, and in particular to waste heat recovery equipment for a non-ferrous metal smelting furnace. Background Art

[0002] Nonferrous metal smelting refers to the production process of separating associated elements from ores, concentrates, secondary resources or other materials to produce nonferrous metals or their compounds. Smelting is generally carried out in a furnace. The furnace is heated to melt the ore, concentrates, secondary resources or other materials, and then the nonferrous metals are extracted. A large amount of high-temperature flue gas will be generated in the process of nonferrous metal smelting. If this part of high-temperature flue gas is directly discharged, it will cause a waste of resources. Therefore, in the process of nonferrous metal smelting, waste heat recovery equipment is often used to recover the heat in the flue gas.

[0003] The working principle of the waste heat recovery equipment is to set up multiple vertical heat pipes and guide water to flow in the heat pipes. The high-temperature flue gas flows through the outer surface of the heat pipes. At this time, the heat pipes act as heat exchange media, the water temperature rises and the flue gas temperature decreases, thereby realizing the recovery of waste heat. Since non-ferrous metal smelting is carried out from ores and other materials, the flue gas generated by smelting will contain impurities; during the production process, the company will set up a purification device connected to the waste heat recovery equipment after the waste heat recovery equipment, and use the purification device to purify the impurities in the flue gas, such as spray towers and other equipment. In order to improve the utilization rate of a single spray tower, some companies will connect the spray tower with multiple furnaces and accelerate the flow of flue gas generated by smelting by setting fan blades. When the flue gas flows, it will drive the impurities to contact the heat pipes, and the accelerated flow of flue gas will cause impurities to accumulate quickly on the heat pipes, and the heat exchange efficiency of the heat pipes will decrease, thereby affecting the use of waste heat recovery equipment.

[0004] In view of the above problems, in the prior art, a scraper is arranged on the surface of the heat pipe. During use, the scraper is used to clean the surface of the heat pipe regularly, thereby avoiding the accumulation of impurities on the heat pipe and achieving the purpose of ensuring the waste heat recovery effect. However, the distance between the scraper and the heat pipe is fixed, and then when the scraper cleans the heat pipe, two situations may occur. One is that the scraper fits the heat pipe, and then the impurity layer will be completely scraped off. At this time, the flow of impurities carried by the flue gas will cause friction to the heat pipe. When the use time is long, the friction effect is likely to cause the surface coating of the heat pipe to wear, and then the acidic substances in the flue gas will corrode the heat pipe, affecting the use of the waste heat recovery equipment. The second is to make a certain gap between the scraper and the heat pipe. At this time, the scraper will leave a certain thickness of impurity layer on the surface of the heat pipe during the movement. When the gap is large, it is easy to cause a thick impurity layer, affecting the heat conduction effect. When the gap is small, the scraper removes a large amount of impurity layer at a time, which is easy to cause the block impurity layer to fall off, causing the impurities carried by the flue gas to directly contact the heat pipe, affecting the use of the waste heat recovery equipment.

[0005] Therefore, a waste heat recovery device for a non-ferrous metal smelting furnace is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a waste heat recovery device for a non-ferrous metal smelting furnace. The present invention solves the problem that high-speed flowing impurities impact on the heat pipe, which easily causes wear to the heat pipe and thus affects the use of the waste heat recovery device. Through layered scraping, a thinner impurity layer is retained on the windward side of the heat pipe. When the air flows, the impurity layer can protect the heat pipe, thereby avoiding the impact and wear of the heat pipe by the high-speed flowing impurities, thereby achieving the purpose of ensuring the stable use of the heat recovery device.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A waste heat recovery device for a non-ferrous metal smelting furnace comprises a shell, a heat conducting pipe, a hot water cylinder and a cold water cylinder, wherein the heat conducting pipe array is connected to the inner cavity of the shell, the hot water cylinder is connected to the front end of the heat conducting pipe, and the cold water cylinder is connected to the rear end of the heat conducting pipe. The device also comprises a support plate, a fixed plate, a cylinder, a transmission assembly, a transmission rod, a positioning scraper, a movable scraper and an adjustment assembly, wherein the support plate is connected to the upper side of the inner cavity of the shell, the fixed plate array is connected to the upper side of the support plate, the cylinder is connected to the front end of the left side of the fixed plate, and the transmission assembly is connected to the rear side of the cylinder. The transmission rod is connected to the transmission assembly, the positioning scraper array is connected to the circumferential surface of the transmission rod, the movable scraper is connected to the front side of the positioning scraper, and the adjustment assembly is connected to the inner cavity of the positioning scraper. When the cylinder drives the transmission rod to move up and down, the transmission assembly drives the transmission rod to rotate. Before the transmission rod moves downward, the adjustment assembly drives the movable scraper away from the positioning scraper. Before the transmission rod moves upward, the adjustment assembly drives the movable scraper close to the positioning scraper, and after the transmission rod moves to the specified position, the adjustment assembly drives the movable scraper to fit the end face of the positioning scraper.

[0009] Through the above scheme, the forward movement of the movable scraper can separate the movable scraper from the heat pipe, and then a gap exists between the movable scraper and the heat pipe. During the movement of the movable scraper, the existence of the gap can retain a part of the impurities attached to the heat pipe, and then the impurities form a protective layer, which effectively reduces the impact of impurities on the heat pipe during the flow of airflow, achieves the protection of the heat pipe, and effectively extends the life of the heat pipe.

[0010] Preferably, the heat-conducting pipe includes a vertical pipe and a U-shaped pipe, and a plurality of the vertical pipes and the U-shaped pipes are connected end to end, the front end of the vertical pipe is connected to the hot water cylinder, and the rear end of the vertical pipe is connected to the cold water cylinder.

[0011] Through the above scheme, the cold water cylinder and the hot water cylinder can be connected, and the water flow in the cold water cylinder can flow into the hot water cylinder through the heat pipe, and the water flow will be heated by the high-temperature gas flowing in the inner cavity of the shell during the flow.

[0012] Preferably, the transmission assembly includes a slide, a slide rod, a rack, a limit frame, a transmission gear, a limit block and a limit piece. The slide is connected to the power output end of the cylinder, the slide rod is connected to the rear side of the slide, the rack array is connected to the left side of the slide rod, the limit frame array is connected to the upper side of the slide, the transmission gear is connected to the upper end of the transmission rod, the rack is meshed with the transmission gear, the limit block array is connected to the right side of the slide, the limit piece is arranged on the left side of the fixed plate, and the left end of the limit frame is sleeved on the outer wall of the vertical tube.

[0013] Through the above scheme, the cylinder pushes the sliding rod to move, so that the rack drives the transmission gear to rotate, and then drives the transmission rod to rotate. The rotation of the transmission rod adjusts the adjustment component, thereby achieving the purpose of adjusting the position of the movable scraper.

[0014] Preferably, the limiting member includes a transverse groove, a V-shaped groove, a V-shaped block, a rocker and a step groove, the transverse groove is opened on the left side of the fixed plate, the V-shaped groove is opened on the left side of the fixed plate and is located at the lower side of the transverse groove, the V-shaped block is installed in the V-shaped groove, the rocker is connected to the two ends of the top of the V-shaped block, and a step groove is opened at the bottom of the transverse groove, and the height value of the step groove is equal to the thickness value of the rocker.

[0015] Through the above scheme, the height value of the step groove is equal to the thickness value of the seesaw, so when the limit block returns to its position, the seesaw can be snapped into the step groove, thereby supporting the limit block. At the same time, the opening of the step groove makes the limit block suddenly lose support when it moves forward to the step groove, thereby achieving the goal of giving the positioning scraper and the movable scraper a larger initial power to remove solidified impurities.

[0016] Preferably, the positioning scraper includes a positioning plate, a scraper and a baffle, the positioning plate is connected to the outer wall of the transmission rod, the scraper is connected to the upper and lower sides of the positioning plate, the inner wall of the scraper is in contact with the outer wall of the vertical tube, the baffle is connected to the upper side of the positioning plate, and the inner wall of the baffle is in contact with the surface of the scraper, and the upper side of the baffle is inclined.

[0017] Through the above scheme, the inner wall of the scraper fits with the outer wall of the vertical tube, and thus in the process of the scraper moving up and down, impurities attached to the surface of the vertical tube can be effectively removed, thereby ensuring the heat conduction effect of the vertical tube. The upper side of the baffle is inclined, and thus in the process of the scraper moving up, the accumulation of impurities on the surface of the baffle is reduced. At the same time, the inclined baffle can increase the contact area with the airflow, thereby achieving the purpose of improving the heat transfer effect of the heat conduction tube.

[0018] Preferably, the movable scraper includes a movable plate and a trimming knife, the movable plate is connected to the front end of the positioning plate, the trimming knife is connected to the upper and lower sides of the movable plate, and the top surface of the movable plate is inclined.

[0019] Through the above scheme, when the repair knife moves upward, impurities will be pushed on the upper side of the movable plate. By tilting the top surface of the movable plate, the accumulation of impurities can be reduced. At the same time, the inclined movable plate can effectively increase the contact area with the airflow, thereby improving the heat transfer effect on the heat pipe.

[0020] Preferably, the adjustment assembly includes a cam, a push block, a thrust spring, a return spring, a push plate and a permanent magnet plate, the cam array is connected to the circumferential surface of the transmission rod, the push block is connected to the left and right sides of the rear end of the movable plate, the thrust spring is connected to the rear side of the right push block, the return spring is connected to the rear side of the left push block, the push plate is connected to the rear side of the thrust spring, the permanent magnet plate is connected to the inner side of the cam, and the permanent magnet plate is arc-shaped.

[0021] Through the above solution, the permanent magnet plate is arc-shaped, so that the permanent magnet plate can stably maintain the suction force on the right push block during the rotation process.

[0022] Preferably, a transition surface is provided on the front side of the cam, and an arc surface is provided on the rear side of the cam, and the outer circumference of the arc surface is configured in a tooth shape.

[0023] Through the above scheme, the arc surface is toothed, and when the arc surface contacts the push plate, the push plate can be vibrated, so that the repair knife periodically approaches the heat pipe, and the impurity surface of the heat pipe forms ripples, thereby increasing the area of ​​the impurity surface, making it easier for the impurity surface to be heated. At the same time, the ripples on the impurity surface can guide the hot air flow.

[0024] Preferably, the inner diameter of the trimming knife is smaller than the inner diameter of the movable plate, and the vertical tube surface array is provided with a card slot.

[0025] Through the above scheme, the inner diameter of the trimming knife is smaller than the inner diameter of the movable plate, so the trimming knife removes impurities, and the outer wall of the impurity is located on the inner side of the inner wall of the movable plate, so that the movable plate will not contact the trimming knife when shaking, effectively ensuring the corrugation of the impurity surface.

[0026] Preferably, the height from the axis of the transverse groove to the lower side of the V-shaped groove is h, and the spacing between two adjacent positioning scrapers is less than h.

[0027] Through the above scheme, the spacing value between adjacent positioning scrapers is less than h, and thus the movable distance between the trimming knife and the scraper is greater than the spacing between adjacent positioning scrapers, which effectively ensures the trimming effect on the impurity surface.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention solves the problem that high-speed flowing impurities impact on the heat conducting pipe, which easily causes wear to the heat conducting pipe and thus affects the use of the waste heat recovery equipment. By setting a transmission assembly, the cylinder drives the transmission rod to rotate through the rack and the transmission gear, thereby rotating the cam. The rotation of the cam pushes the movable scraper forward, so that a crescent-shaped gap is generated between the movable scraper and the heat conducting pipe. At this time, the transmission assembly drives the movable scraper to move downward, thereby retaining a uniform and thin crescent-shaped impurity layer on the surface of the heat conducting pipe, thereby avoiding the impurities in the flue gas from directly impacting the heat conducting pipe, and effectively ensuring the long-term stable use of the waste heat recovery equipment.

[0030] 2. By setting a cam, the surface of the cam is provided with a transition surface and an arc surface. The rotation of the cam causes the contact surface between the cam and the push plate to be transformed from the transition surface to the arc surface, thereby realizing the pushing forward of the movable scraper. At the same time, the outer periphery of the arc surface is constructed into a tooth shape, and then when the arc surface contacts the push plate, the push plate will vibrate. Through the vibration of the push plate, the movable scraper will leave wavy indentations on the surface of the impurity layer during the movement. The wavy indentations are convenient for guiding the airflow to flow to both sides, thereby achieving the purpose of reducing the accumulation of impurities. At the same time, the wavy setting increases the surface area of ​​the impurity layer, increases the heat absorption of the impurity layer, and then improves the heat conduction effect of the impurity layer on the heat pipe, thereby effectively ensuring the heat conduction and waste heat recovery effect of the waste heat recovery equipment during long-term use.

[0031] 3. By setting a permanent magnetic plate, as the cam rotates, the permanent magnetic plate will approach the push block, and then generate suction on the push block, causing the push block to move backward. The backward movement of the push block reduces the gap between the movable scraper and the heat transfer pipe. By distinguishing the front and back of the permanent magnetic plate when it generates suction on the push block, the gap between the movable scraper and the heat transfer pipe is different when it moves down and up, achieving the purpose of shaping the impurity layer layer by layer, thereby avoiding the breakage of the impurity layer caused by excessive removal at a single time, effectively ensuring the stable forming of the thinner impurity layer, and facilitating the stable use of the waste heat recovery equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0034] Figure 3 It is a structural schematic diagram of adjusting the position of the component of the present invention;

[0035] Figure 4 It is a structural schematic diagram of the transmission component part of the present invention;

[0036] Figure 5 It is a structural schematic diagram of the positioning scraper part of the present invention;

[0037] Figure 6 It is a structural schematic diagram of the regulating component part of the present invention;

[0038] Figure 7 For the present invention Figure 6 The enlarged schematic diagram of point A in the middle;

[0039] Figure 8 It is a schematic diagram of the forward moving state of the movable scraper of the present invention;

[0040] Fig. 9 It is a schematic diagram of the working state of the present invention.

[0041] In the figure: 1, shell; 2, heat pipe; 201, vertical pipe; 2011, slot; 202, U-shaped pipe; 3, hot water cylinder; 4, cold water cylinder; 5, support plate; 6, fixed plate; 7, cylinder; 8, transmission assembly; 801, slide; 802, slide bar; 803, rack; 804, limit frame; 805, transmission gear; 806, limit block; 807, limit piece; 8071, transverse groove; 8072, V-shaped groove; 8073, V-shaped block; 8074 , seesaw; 8075, stepped groove; 9, transmission rod; 10, positioning scraper; 1001, positioning plate; 1002, scraper; 1003, baffle; 11, movable scraper; 1101, movable plate; 1102, repair knife; 12, adjustment component; 1201, cam; 12011, transition surface; 12022, arc surface; 1202, push block; 1203, thrust spring; 1204, return spring; 1205, push plate; 1206, permanent magnet plate. DETAILED DESCRIPTION

[0042] The following is a clear and complete description of the technical solution of the embodiment of the present invention in conjunction with the drawings of the embodiment of the present invention, so that its working state and structural features are more detailed. Obviously, the described embodiment is only a partial embodiment of the present invention, not a complete embodiment. Based on the embodiment of the present invention, other embodiments obtained by ordinary technicians in this field without making any creativity belong to the protection scope of the present invention.

[0043] See also Figures 1 to 9 The present invention provides a waste heat recovery device for a non-ferrous metal smelting furnace, and the technical solution is as follows:

[0044] For details, please refer to Figures 1 to 9, a waste heat recovery device for a non-ferrous metal smelting furnace, comprising a shell 1, a heat conducting pipe 2, a hot water cylinder 3 and a cold water cylinder 4, the heat conducting pipe 2 is connected in an array in the inner cavity of the shell 1, the heat conducting pipe 2 is in a left-right array, the hot water cylinder 3 is connected to the front end of the heat conducting pipe 2, a water outlet is provided on the lower side of the hot water cylinder 3, the cold water cylinder 4 is connected to the rear end of the heat conducting pipe 2, a water inlet is provided on the lower side of the cold water cylinder 4, water flows in from the water inlet, flows through the heat conducting pipe 2, and finally flows out from the water outlet, and also comprises a support plate 5, a fixing plate 6, a cylinder 7, a transmission assembly 8, a transmission rod 9, a positioning scraper 10, a movable scraper 11 and an adjusting assembly 12, the support plate 5 is connected to the upper side of the inner cavity of the shell 1, the edge of the support plate 5 and the surface of the inner cavity of the shell 1 are welded, so that in the process of flue gas flowing, the flue gas will not flow to the upper side of the support plate 5, the fixing plate 6 is connected in an array to the support plate On the upper side of the plate 5, the fixed plate 6 and the supporting plate 5 are fixedly connected, the cylinder 7 is connected to the front end of the left side of the fixed plate 6, the transmission assembly 8 is connected to the rear side of the cylinder 7, the rear end of the cylinder 7 is the power output end, the transmission rod 9 is connected to the transmission assembly 8, the positioning scraper 10 array is connected to the circumference of the transmission rod 9, the movable scraper 11 is connected to the front side of the positioning scraper 10, and the adjustment assembly 12 is connected to the inner cavity of the positioning scraper 10. When the cylinder 7 drives the transmission rod 9 to move up and down, the transmission assembly 8 drives the transmission rod 9 to rotate, and before the transmission rod 9 moves downward, the adjustment assembly 12 drives the movable scraper 11 away from the positioning scraper 10, and before the transmission rod 9 moves upward, the adjustment assembly 12 drives the movable scraper 11 close to the positioning scraper 10, and after the transmission rod 9 moves to the specified position, the adjustment assembly 12 drives the movable scraper 11 to fit the end surface of the positioning scraper 10.

[0045] By setting the movable scraper 11, in the initial state, the movable scraper 11 is attached to the heat pipe 2, thereby increasing the surface area of ​​the heat pipe 2 to improve the heat conduction efficiency of the heat pipe 2. When it is necessary to remove impurities on the surface of the heat pipe 2, the movable scraper 11 is pushed forward by the adjustment component 12, thereby separating the movable scraper 11 from the heat pipe 2, and the gap between the movable scraper 11 and the heat pipe 2 is crescent-shaped (such as Fig. 9 As shown), that is, it is thicker in the middle and thinner on both sides. When the movable scraper 11 removes the attached impurities on the surface of the heat-conducting tube 2, an impurity layer with a crescent shape in a top view will be formed. When the airflow acts on the heat-conducting tube 2, it will first act on the impurity layer. The impurity layer is crescent-shaped, thick in the middle and thin on both sides, which makes the curvature of the outer wall of the impurity layer larger. When the airflow acts on the impurity layer, the drainage effect on the flue gas is good, thereby reducing the impact force of the flue gas on the impurity layer, and effectively ensuring the stability of the heat-conducting tube 2.

[0046] As an embodiment of the present invention, refer to Figure 2 , Figure 3 , Figure 4 Figure 8 and Fig. 9The heat-conducting pipe 2 includes a vertical pipe 201 and a U-shaped pipe 202, and a plurality of vertical pipes 201 and U-shaped pipes 202 are connected end to end. The front vertical pipe 201 is connected to the hot water cylinder 3, and the rear vertical pipe 201 is connected to the cold water cylinder 4, and then the heat-conducting pipe 2 connects the cold water cylinder 4 with the hot water cylinder 3. The surface of the vertical pipe 201 is coated with a corrosion-resistant coating. The front side of the vertical pipe 201 is the windward side, and the rear side of the vertical pipe 201 is the leeward side. The transmission assembly 8 includes a slide 801, a slide rod 802, a rack 803, a limit frame 804, a transmission gear 805, a limit block 806 and a limit member 807. The power output end of the cylinder 7 is located at the rear side, and the slide 801 is connected to the air cylinder 7. At the power output end of the cylinder 7, the slide bar 802 is connected to the rear side of the slide 801, the slide bar 802 is slidably connected to the slide 801, the rack 803 is connected in array to the left side of the slide bar 802, the position of the rack 803 corresponds to the position of the vertical tube 201, the limit frame 804 is connected in array to the upper side of the slide 801, the transmission gear 805 is connected to the upper end of the transmission rod 9, the rack 803 is meshed with the transmission gear 805, the limit block 806 is connected in array to the right side of the slider, the limit block 806 is cylindrical, the limit member 807 is arranged on the left side of the fixed plate 6, the position settings of the limit block 806 and the limit member 807 are both corresponding to the position of the vertical tube 201, the limit frame The left end of 804 is sleeved on the outer wall of the vertical tube 201, the left end of the limit frame 804 can slide up and down along the surface of the vertical tube 201, and the right end of the limit frame 804 can slide forward and backward along the top of the slide bar 802. The limit member 807 includes a transverse groove 8071, a V-shaped groove 8072, a V-shaped block 8073, a rocker plate 8074 and a stepped groove 8075. The transverse groove 8071 is opened on the left side of the fixing plate 6, and the V-shaped groove 8072 is opened on the left side of the fixing plate 6 and is located at the lower side of the transverse groove 8071. The transverse groove 8071 is connected to the V-shaped groove 8072, and the V-shaped block 8073 is installed in the V-shaped groove 8072. The V-shaped block 8073 and the V-shaped groove 80 The spacing between 72 is equal to the diameter of the limit block 806, the seesaw 8074 is connected to the two ends of the top of the V-shaped block 8073, the initial state of the rear seesaw 8074 is horizontal, and the initial state of the front seesaw 8074 is inclined, the seesaw 8074 and the V-shaped block 8073 are rotatably connected, and a torsion spring is arranged at the connection point to ensure that the seesaw 8074 can return to its initial position after the limit block 806 passes by, a step groove 8075 is provided at the bottom of the transverse groove 8071, and the height value of the step groove 8075 is equal to the thickness value of the seesaw 8074, and the front seesaw 8074 can overlap on the step groove 8075, thereby ensuring the stability of the limit block 806 when moving.

[0047] By setting the transmission assembly 8, the cylinder 7 pushes the slide bar 802 to move backward through the slide 801. When the slide bar 802 moves backward, the rack 803 is driven to mesh with the transmission gear 805, thereby driving the transmission gear 805 to rotate. In the process of the slide bar 802 moving backward, the limit block 806 moves from the transverse groove 8071 to the V-shaped groove 8072. At this time, the limit block 806 moves downward along the V-shaped groove 8072, thereby causing the slide bar 802 to move downward. The downward movement of the slide bar 802 drives the transmission rod 9 to move downward through the limit frame 804, thereby realizing the downward movement of the positioning scraper 10 and the movable scraper 11. The shape of the V-shaped groove 8072 is set to make the limit block 80 After moving down a specified distance, it will move up, thereby driving the positioning scraper 10 and the movable scraper 11 to move up and reset. When the limit block 806 moves, it will contact the seesaw 8074. The seesaw 8074 is affected by the moving direction of the limit block 806 and rotates. Since the hardness of the upper and lower sides of a single impurity layer is relatively high during the formation of the impurity layer, the present solution sets a stepped groove 8075, and the transition between the stepped groove 8075 and the transverse groove 8071 is a sudden transition. When the limit block 806 moves into the stepped groove 8075, a large vertical pressure will be generated, thereby facilitating the movable scraper 11 and the positioning scraper 10 to cut the edge of the impurity layer.

[0048] As an embodiment of the present invention, refer to Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9The positioning scraper 10 includes a positioning plate 1001, a scraper 1002 and a baffle 1003. The positioning plate 1001 is connected to the outer wall of the transmission rod 9. The positioning plate 1001 is rotatably connected to the transmission rod 9. The height of the positioning plate 1001 on the transmission rod 9 is fixed. The scraper 1002 is connected to the upper and lower sides of the positioning plate 1001. The scraper 1002 is fixedly connected to the positioning plate 1001. The inner wall of the scraper 1002 fits the outer wall of the vertical tube 201. When the scraper 1002 moves up and down, the outer wall of the vertical tube 201 can be effectively scraped to remove impurities attached to the outer wall of the vertical tube 201. The baffle 1003 is connected to the upper side of the positioning plate 1001, and the inner wall of the baffle 1003 is in contact with the scraper 1 002, the upper side of the baffle 1003 is inclined, so that impurities on the upper side of the baffle 1003 can fall along the inclined surface, the movable scraper 11 includes a movable plate 1101 and a repair knife 1102, the movable plate 1101 is connected to the front end of the positioning plate 1001, the movable plate 1101 is slidably connected to the positioning plate 1001, the movable plate 1101 can slide back and forth on the positioning plate 1001, the repair knife 1102 is connected to the upper and lower sides of the movable plate 1101, the number of the repair knives 1102 is two, the top surface of the movable plate 1101 is inclined, so that impurities located on the upper side of the movable plate 1101 can slide down, the adjustment component 12 includes a cam 1201, a push block 1202, and a thrust spring 120 3. The reset spring 1204, the push plate 1205 and the permanent magnet plate 1206, the cam 1201 array is connected to the circumference of the transmission rod 9, the position of the cam 1201 corresponds to the position of the positioning scraper 10, the push block 1202 is connected to the left and right sides of the rear end of the movable plate 1101, the thrust spring 1203 is connected to the rear side of the right push block 1202, the reset spring 1204 is connected to the rear side of the left push block 1202, the push plate 1205 is connected to the rear side of the thrust spring 1203, the permanent magnet plate 1206 is connected to the inner side of the cam 1201, the permanent magnet plate 1206 is arc-shaped, the front side of the cam 1201 is provided with a transition surface 12011, the transition surface 12011 is arc-shaped, and the rear side of the cam 1201 is provided with a circular The arc surface 12022 is semicircular, and the outer periphery of the arc surface 12022 is configured in a tooth shape. The inner diameter of the trimming knife 1102 is smaller than the inner diameter of the movable plate 1101, so that when the trimming knife 1102 vibrates, the movable plate 1101 can be prevented from contacting the impurity layer. The surface array of the vertical tube 201 is provided with a card groove 2011, so that when the movable plate 1101 and the vertical tube 201 are fitted together, the trimming knife 1102 can be placed conveniently. The height value from the axis of the transverse groove 8071 to the lower side of the V-shaped groove 8072 is h, and the spacing value between two adjacent positioning scrapers 10 is less than h. Therefore, the downward movement distance of the positioning scraper 10 and the movable scraper 11 is greater than h, which effectively ensures the removal effect of the impurity layer.

[0049] By setting the adjustment component 12, when the gear drives the transmission rod 9 to rotate, the transmission rod 9 can drive the cam 1201 to rotate. When the cam 1201 rotates, the transition surface 12011 begins to gradually squeeze the push plate 1205. The push plate 1205 pushes the push block 1202 forward through the thrust spring 1203. The push block 1202 drives the movable plate 1101 forward. The movable plate 1101 moves forward and drives the trimming knife 1102 forward, so that the trimming knife 1102 is separated from the vertical tube 201 to form a gap. At this time, the downward movement of the trimming knife 1102 can retain the impurity layer of the gap thickness. By retaining the impurity layer on the windward side of the vertical tube 201, the friction effect of the flowing impurities on the vertical tube 201 can be effectively reduced, and the leeward side of the vertical tube 201 is less corrosive to the impurities, and there is no need to lay the impurity layer for buffering. The laying of the impurity layer will cause the heat conduction efficiency of the windward side of the vertical tube 201 to decrease. By constructing a tooth shape on the arc surface 12022, a corrugated pattern will be formed on the surface of the impurity layer during the movement of the repair knife 1102, thereby increasing the surface area of ​​the impurity layer and improving the heat absorption effect of the impurity layer.

[0050] The present invention retains a thin impurity layer on the windward surface of the vertical tube 201 when removing the impurity layer, and protects the heat pipe 2 through the impurity layer, thereby preventing the high-speed flowing impurities from directly impacting the heat pipe 2 and causing damage to the heat pipe 2. At the same time, in the process of retaining the impurity layer, the surface area of ​​the impurity layer is increased, thereby increasing the heating area of ​​the impurity layer, so as to ensure the heat transfer effect of the impurity layer on the heat pipe 2;

[0051] Specifically, in order to ensure the heat conduction effect of the heat pipe 2, in the initial stage, the movable scraper 11 is made to fit with the heat pipe 2, so as to increase the surface area of ​​the heat pipe 2, thereby increasing the amount of heat generated by the heat pipe 2 on the water flow;

[0052] When the heat pipe 2 is used for a certain period of time, impurities will accumulate on the heat conducting tube 2, thereby causing the heat conducting efficiency of the heat conducting tube 2 to decrease. In order to ensure the heat conducting efficiency of the heat conducting tube 2, a positioning scraper 10 and a movable scraper 11 are provided to remove the impurity layer regularly. At the same time, in order to reduce the impact of the flowing impurities on the heat conducting tube 2, a thinner impurity layer is retained to protect the heat conducting tube 2 through the impurity layer. A transmission component 8 is provided, and the transmission component 8 drives the cam 1201 to rotate under the action of the transmission rod 9, so that the movable scraper 11 moves forward to create a gap with the vertical tube 201, thereby When the movable scraper 11 moves up and down, part of the impurity layer can be retained. Specifically, the cylinder 7 is started, and the cylinder 7 pushes the slide bar 802 forward through the slide 801. The slide bar 802 moves forward to drive the rack 803 to mesh with the transmission gear 805, so that the transmission rod 9 rotates. The rotation of the transmission rod 9 drives the cam 1201 to squeeze the push plate 1205. The push plate 1205 pushes the push block 1202 forward through the thrust spring 1203, so that the movable scraper 11 moves forward, and the reset spring 1204 is stretched. At this time, a crescent-shaped gap (such as Fig. 9 As shown, with the push of the cylinder 7, the limit block 806 moves to the V-shaped groove 8072, and then the slide bar 802 starts to move downward, and the slide bar 802 drives the transmission rod 9 to move downward through the limit frame 804, and the transmission rod 9 moves downward to drive the positioning scraper 10 and the movable scraper 11 to move downward, and the scraper 1002 fits the back of the heat-conducting pipe 2, thereby completely removing the impurities on the back of the heat-conducting pipe 2, effectively ensuring the heat conduction effect, and the gap formed between the heat-conducting pipe 2 by the trimming knife 1102 makes it possible to form a thin crescent-shaped impurity layer on the surface of the vertical pipe 201 during the downward movement of the trimming knife 1102, and then when the flue gas carries impurities and flows, the impurity layer can play a protective role;

[0053] As impurities accumulate, they will gradually solidify. If the impurities are directly cut to form a thinner impurity layer, the impurities subjected to greater force will tend to fall off in blocks. Furthermore, in order to facilitate the shaping of the impurity layer, an arc-shaped permanent magnet plate 1206 is set on the cam 1201. The suction force of the permanent magnet plate 1206 on the push block 1202 can be changed by the rotation angle of the cam 1201, so that when the transmission rod 9 moves down or up, the position of the push block 1202 is different, so that the repair knife 1102 is farther away from the vertical tube 201 when it moves down, and closer to the vertical tube 201 when it moves up, thereby realizing layered cutting. Specifically, by setting the cam 1201, when the cam When the arc surface 12022 of the wheel 1201 contacts the push plate 1205, the push plate 1205 can be pushed forward. The push plate 1205 pushes the push block 1202 forward through the thrust spring 1203. As the cam 1201 rotates, the permanent magnet plate 1206 approaches the push block 1202, generating suction force on the push block 1202. At this time, the push block 1202 approaches the push plate 1205, and the thrust spring 1203 contracts, thereby driving the trimming knife 1102 to approach the heat pipe 2. At this time, the gap between the trimming knife 1102 and the heat pipe 2 is reduced. Through the rotation of the cam 1201, the trimming amount of the impurity layer by the trimming knife 1102 is changed, thereby avoiding the block shedding caused by the large force on the impurity layer.

[0054] In order to ensure the heat conduction effect of the heat conducting pipe 2, the cam 1201 is set, and the arc surface 12022 of the cam 1201 is constructed into a tooth shape, so that when the cam 1201 rotates, the push plate 1205 will move back and forth periodically, and the push plate 1205 will move back and forth periodically, so that the repair knife 1102 forms a corrugated movement track on the surface of the impurity layer, so that the windward surface of the retained impurity layer is corrugated, thereby increasing the surface area of ​​the impurity layer, so as to increase the heating area of ​​the impurity layer, and thus facilitate the intermittent heat transfer of the impurity layer to the heat conducting pipe 2. Specifically, by setting the cam 1201, the arc surface 12022 of the cam 1201 is constructed into a tooth shape, and then when the cam 1201 rotates, the push plate 1205 will move back and forth periodically, and the push plate 1205 will move back and forth periodically, so that the repair knife 1102 will form a corrugated movement track on the surface of the impurity layer, and then the windward surface of the retained impurity layer will be corrugated, thereby increasing the surface area of ​​the impurity layer, so as to increase the heating area of ​​the impurity layer, and then facilitate the intermittent heat transfer of the impurity layer to the heat conducting pipe 2. 022 is set to be tooth-shaped. When the cam 1201 rotates, the distances between the tooth peaks of the arc surface 12022 and the junction of the tooth peaks to the transmission rod 9 are different, so that when the tooth peaks contact the push plate 1205, the push plate 1205 can be moved forward. When the junction of the tooth peaks contacts the push plate 1205, the reset spring 1204 can drive the push block 1202 to move backward, thereby realizing the backward movement of the repair knife 1102. In the process of the repair knife 1102 moving up and down, a certain amount of forward and backward movement is applied to the repair knife 1102, so that the repair knife 1102 cuts the windward surface of the impurity layer into a corrugated shape, thereby increasing the surface area of ​​the windward surface of the impurity layer, which is convenient for the impurity layer to absorb heat;

[0055] After the impurity layer moves upward, the support of the seesaw 8074 facilitates the cylinder 7 to drive the slide 801 to reset, and the push plate 1205 contacts the cam 1201 again. The cam 1201 causes the push plate 1205 to vibrate to facilitate the removal of impurities accumulated on the surface of the movable plate 1101. When the cam 1201 rotates to the transition surface 12011 and contacts the push plate 1205, the movable plate 1101 starts to drive the trimming knife 1102 to approach and fit the outer surface of the heat pipe 2.

[0056] After using it for a period of time, the waste heat recovery equipment should be cleaned and repaired as a whole.

[0057] Although the embodiments of the present invention have been described, it will be apparent to those skilled in the art that changes and modifications may be made to the embodiments to obtain other effects with an understanding of the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for a non-ferrous metal smelting furnace, comprising a housing (1), a heat conducting pipe (2), a hot water cylinder (3) and a cold water cylinder (4), characterized in that: The invention also comprises a support plate (5), a fixed plate (6), a cylinder (7), a transmission assembly (8), a transmission rod (9), a positioning scraper (10), a movable scraper (11) and an adjustment assembly (12), wherein the support plate (5) is connected to the upper side of the inner cavity of the housing (1), the fixed plate (6) is connected in array to the upper side of the support plate (5), the cylinder (7) is connected to the front end of the left side of the fixed plate (6), the transmission assembly (8) is connected to the rear side of the cylinder (7), the transmission rod (9) is connected to the transmission assembly (8), the positioning scraper (10) is connected in array to the circumferential surface of the transmission rod (9), and the movable scraper (11) is connected to the outer surface of the fixed plate (6). The front side of the positioning scraper (10), the adjustment component (12) is connected to the inner cavity of the positioning scraper (10), and when the cylinder (7) drives the transmission rod (9) to move up and down, the transmission component (8) drives the transmission rod (9) to rotate, and before the transmission rod (9) moves downward, the adjustment component (12) drives the movable scraper (11) away from the positioning scraper (10), and before the transmission rod (9) moves upward, the adjustment component (12) drives the movable scraper (11) close to the positioning scraper (10), and after the transmission rod (9) moves to a specified position, the adjustment component (12) drives the movable scraper (11) to fit the end surface of the positioning scraper (10).

2. The waste heat recovery device for a non-ferrous metal smelting furnace according to claim 1, characterized in that: The heat-conducting pipe (2) comprises a vertical pipe (201) and a U-shaped pipe (202); a plurality of the vertical pipes (201) and the U-shaped pipes (202) are connected end to end; the front end of the vertical pipe (201) is connected to a hot water cylinder (3); and the rear end of the vertical pipe (201) is connected to a cold water cylinder (4).

3. The waste heat recovery device for a non-ferrous metal smelting furnace according to claim 2, characterized in that: The transmission assembly (8) comprises a slide (801), a slide bar (802), a rack (803), a limit frame (804), a transmission gear (805), a limit block (806) and a limit piece (807); the slide (801) is connected to the power output end of the cylinder (7); the slide bar (802) is connected to the rear side of the slide (801); the rack (803) is connected in array to the left side of the slide bar (802); the limit frame (804) is connected in array to the upper side of the slide (801); the transmission gear (805) is connected to the upper end of the transmission rod (9); the rack (803) is meshed with the transmission gear (805); the limit block (806) is connected in array to the right side of the slide; the limit piece (807) is arranged on the left side of the fixed plate (6); and the left end of the limit frame (804) is sleeved on the outer wall of the vertical tube (201).

4. The waste heat recovery device for a non-ferrous metal smelting furnace according to claim 3, characterized in that: The limiting member (807) comprises a transverse groove (8071), a V-shaped groove (8072), a V-shaped block (8073), a seesaw (8074) and a stepped groove (8075); the transverse groove (8071) is provided on the left side of the fixing plate (6); the V-shaped groove (8072) is provided on the left side of the fixing plate (6) and is located at the lower side of the transverse groove (8071); the V-shaped block (8073) is installed in the V-shaped groove (8072); the seesaw (8074) is connected to the two ends of the top of the V-shaped block (8073); a stepped groove (8075) is provided at the bottom of the transverse groove (8071); the height value of the stepped groove (8075) is equal to the thickness value of the seesaw (8074).

5. The waste heat recovery device for a non-ferrous metal smelting furnace according to claim 3, characterized in that: The positioning scraper (10) comprises a positioning plate (1001), a scraper (1002) and a baffle (1003); the positioning plate (1001) is connected to the outer wall of the transmission rod (9); the scraper (1002) is connected to the upper and lower sides of the positioning plate (1001); the inner wall of the scraper (1002) is in contact with the outer wall of the vertical tube (201); the baffle (1003) is connected to the upper side of the positioning plate (1001); the inner wall of the baffle (1003) is in contact with the surface of the scraper (1002); and the upper side of the baffle (1003) is inclined.

6. The waste heat recovery device for a non-ferrous metal smelting furnace according to claim 5, characterized in that: The movable scraper (11) comprises a movable plate (1101) and a trimming knife (1102); the movable plate (1101) is connected to the front end of the positioning plate (1001); the trimming knife (1102) is connected to the upper and lower sides of the movable plate (1101); and the top surface of the movable plate (1101) is inclined.

7. The waste heat recovery device for a non-ferrous metal smelting furnace according to claim 6, characterized in that: The adjustment component (12) comprises a cam (1201), a push block (1202), a thrust spring (1203), a return spring (1204), a push plate (1205) and a permanent magnet plate (1206); the cam (1201) array is connected to the circumference of the transmission rod (9); the push block (1202) is connected to the left and right sides of the rear end of the movable plate (1101); the thrust spring (1203) is connected to the rear side of the right push block (1202); the return spring (1204) is connected to the rear side of the left push block (1202); the push plate (1205) is connected to the rear side of the thrust spring (1203); the permanent magnet plate (1206) is connected to the inner side of the cam (1201); and the permanent magnet plate (1206) is arc-shaped.

8. The waste heat recovery device for a non-ferrous metal smelting furnace according to claim 7, characterized in that: The front side of the cam (1201) is provided with a transition surface (12011), and the rear side of the cam (1201) is provided with an arc surface (12022), and the outer periphery of the arc surface (12022) is configured in a tooth shape.

9. The waste heat recovery device for a non-ferrous metal smelting furnace according to claim 6, characterized in that: The inner diameter of the trimming knife (1102) is smaller than the inner diameter of the movable plate (1101), and a card slot (2011) is arranged in an array on the surface of the vertical tube (201).

10. The waste heat recovery device for a non-ferrous metal smelting furnace according to claim 4, characterized in that: The height value from the axis of the transverse groove (8071) to the lower side of the V-shaped groove (8072) is h, and the spacing value between two adjacent positioning scrapers (10) is less than h.

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