Uniformly heated precoated sand roasting furnace
By using technical means such as heating plates, stirring components and shaking components in the coated sand roasting furnace, the problem of uneven heating of coated sand is solved and a higher quality product output is achieved.
Patent Information
- Application Number
- CN202420963417.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the use of existing coated sand roasting furnaces, coated sand and other raw materials are prone to accumulate, resulting in uneven heating of coated sand and affecting product quality.
A coated sand roasting furnace with uniform heat is designed, using a heating plate, a second stirring assembly and a shaking assembly in the furnace body. Through the stirring and shaking mechanism of the spiral blades, the scraping assembly and the preheating assembly are combined to ensure the coating. The sand is heated and stirred evenly during the roasting process.
It effectively reduces the uneven heating of the coated sand, improves product quality, and through uniform heating and stirring, the possibility of the coated sand adhering to the furnace body is reduced, and the roasting efficiency is improved.
Smart Images
Figure CN222187750U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of coated sand processing, and in particular to a coated sand roasting furnace with uniform heating. Background Art
[0002] At present, coated sand is a molding sand or core sand whose surface is covered with a layer of solid resin film before molding. There are two coating processes: cold method and hot method: cold method uses ethanol to dissolve the resin, and adds urotropine during the sand mixing process, so that the two are coated on the surface of the sand, and the ethanol evaporates to obtain coated sand; hot method preheats the sand to a certain temperature, adds resin to melt it, stirs to coat the resin on the surface of the sand, adds urotropine aqueous solution and lubricant, cools, crushes, and sieves to obtain coated sand.
[0003] In the production process of coated sand, a roasting furnace is used. The roasting furnace is a device that can effectively reduce the sintering temperature. However, during the use of existing roasting furnaces, the coated sand and other raw materials are easily piled up together, causing uneven heating of the coated sand, thereby affecting the product quality of the coated sand. Utility Model Content
[0004] In order to reduce the possibility of uneven heating of coated sand, the utility model provides a coated sand roasting furnace with uniform heating.
[0005] The utility model provides a uniformly heated coated sand roasting furnace adopts the following technical solution:
[0006] A coated sand roasting furnace with uniform heating, comprising a furnace body, a loading assembly connected to the top of the furnace body, a unloading pipe connected to the bottom of the furnace body, a heating plate inlaid in the furnace body, and a second stirring assembly connected to the furnace body. The second stirring assembly comprises a second motor, a driving rod, a rotating shaft and a spiral blade. The second motor is connected to the furnace body, and the driving shaft of the second motor passes through the furnace body and extends into the furnace body. The driving rod and the rotating shaft are both arranged in the furnace body. The driving rod is connected to the driving shaft of the second motor. A slot is provided at the first end of the rotating shaft, the driving rod is inserted into the slot and is engaged with the rotating shaft, the spiral blade is sleeved on the rotating shaft and connected to the rotating shaft, the rotating shaft is connected to a shaking assembly that causes the rotating shaft to shake along the length direction of the driving rod, and the shaking assembly is connected to the furnace body.
[0007] By adopting the above technical solution, the feeding assembly is opened, the feeding pipe is closed, and the coated sand is added to the furnace body from the feeding assembly. At the same time, the heating plate and the second motor are started, and the heating plate increases the temperature inside the furnace body. The second motor drives the driving rod to move, the driving rod drives the rotating shaft to move, and the rotating shaft drives the spiral blade to move. The spiral blade stirs the coated sand inside the furnace body, so that the coated sand is heated evenly, reducing the impact on the product quality of the coated sand. Start the shaking assembly, the shaking assembly drives the rotation and shaking, and then the spiral blade shakes, further improving the effect of uniform coating and stirring, so that the coated sand is heated evenly, reducing the impact on the product quality of the coated sand.
[0008] Preferably, the shaking assembly includes a protection box, a support rod and a slider, the protection box is connected to the furnace body, the second end of the rotating shaft extends into the protection box and is slidably connected to the protection box, the support rod and the slider are both arranged in the protection box, the support rod is connected to the protection box, the slider is connected to the support rod, the end wall of the second end of the rotating shaft is arc-shaped, the second end of the rotating shaft is provided with an annular slide groove, the curvature of the slide groove is the same as the curvature of the end surface of the second end of the rotating shaft, and the slider is arranged in the slide groove and is slidably connected to the rotating shaft.
[0009] By adopting the above technical solution, when the shaft is rotating, the positions of the support rod and the slider remain unchanged. Since the slide groove is arranged in an arc surface, the shaft will drive the spiral blade to move along the length direction of the driving rod, thereby improving the effect of uniform coating and stirring, further reducing the possibility of uneven heating of the coated sand, and reducing the impact on the product quality of the coated sand. The shaft slides with the protection box during the movement, and the protection box reduces the impact of the coated sand on the slide groove and the slider.
[0010] Preferably, the shaking assembly also includes a block and a spring, an active cavity connected to the slot is opened in the rotating shaft, the block and the spring are both arranged in the active cavity, the driving rod passes through the slot and extends into the active cavity, the driving rod is connected to the block, the block is slidably connected to the rotating shaft, one end of the spring is connected to the block, and the other end is connected to the rotating shaft.
[0011] By adopting the above technical solution, the block cooperates with the spring to assist the rotating shaft to make reciprocating motion. At the same time, the block limits the driving rod to reduce the possibility of the driving rod being separated from the rotating shaft.
[0012] Preferably, the spiral blade is connected to a wall scraping assembly, and the wall scraping assembly includes a connecting rod and a scraping rod, one end of the connecting rod is connected to the spiral blade, and the other end is connected to the scraping rod, and the scraping rod is in sliding contact with the inner wall of the furnace body.
[0013] By adopting the above technical solution, the spiral blade drives the connecting rod to move while stirring the coated sand, and the connecting rod drives the scraper rod to move. The scraper rod scrapes the inner wall of the furnace body to reduce the adhesion of the coated sand to the inside of the furnace body, and further reduce the possibility of uneven heating of the coated sand.
[0014] Preferably, the feeding assembly includes a preheating furnace, a feeding pipe and a baffle, the preheating furnace is connected to the furnace body, a placement cavity and a through hole are provided in the preheating furnace, the through hole connects the placement cavity and the inside of the furnace body, the feeding pipe is connected to the preheating furnace, the feeding pipe connects the placement cavity and the outside world, a slot connected to the through hole is provided on the side wall of the preheating furnace, the baffle is inserted into the slot, and when the baffle passes through the through hole, the through hole and the placement cavity are isolated.
[0015] By adopting the above technical solution, the coated sand is sent into the preheating furnace through the feeding pipe, the baffle is opened, the coated sand in the preheating furnace is sent into the furnace body, and then the baffle is closed to process the coated sand in the furnace body, thereby reducing the heat loss inside the furnace body.
[0016] Preferably, the feeding assembly also includes a first filter screen, a preheating chamber is opened in the preheating furnace, the preheating chamber is connected to the placement chamber, the first filter screen isolates the preheating chamber from the placement chamber, and the top and bottom of the first filter screen are connected to the preheating furnace; the preheating furnace is connected to a preheating assembly, and the preheating assembly includes a fan, an air suction pipe, an air outlet pipe and a branch pipe, the fan is connected to the furnace body, the first end of the air suction pipe is connected to the discharge pipe, and the second end is connected to the inlet end of the fan, the inner wall of the air suction pipe is connected to a second filter screen, the second filter screen isolates the air inlet of the fan and the discharge pipe, one end of the air outlet pipe is connected to the outlet end of the fan, and the other end is closed, the branch pipe is connected to the air outlet pipe, and the second end of the branch pipe is inserted into the preheating furnace and connected to the preheating chamber.
[0017] By adopting the above technical solution, the coated sand can be preheated in the preheating furnace before entering the furnace body. Add an appropriate amount of coated sand to the preheating furnace. When the temperature inside the furnace body rises, the heat will be transferred to the coated sand in the preheating furnace through the baffle to preheat the coated sand in the preheating furnace; in addition, after the coated sand in the furnace body is processed, open the discharge pipe, and when the coated sand in the furnace body is released, start the fan. The fan sends the heat carried by the coated sand to the outlet pipe through the suction pipe, and the outlet pipe is transported to the branch pipe. The branch pipe sends the heat into the preheating chamber. The heat in the preheating chamber passes through the first filter screen to preheat the coated sand in the preheating furnace, reducing costs. The second filter screen reduces the possibility of coated sand entering the suction pipe.
[0018] Preferably, the feeding pipe is connected to a cover plate, and the cover plate blocks the feeding pipe.
[0019] By adopting the above technical solution, the cover plate reduces the heat loss in the preheating furnace.
[0020] Preferably, the preheating furnace is connected to a first stirring component, which includes a first motor, a stirring shaft and a stirring rod. The first motor is connected to the preheating furnace, and the driving shaft of the first motor extends into the preheating furnace and is plugged into the preheating furnace. The stirring shaft and the stirring rod are arranged in the first filter, the stirring shaft is connected to the driving shaft of the first motor, the stirring rod is connected to the stirring shaft, and the stirring shaft is arranged at an angle.
[0021] By adopting the above technical solution, when preheating the coated sand in the preheating furnace, the first motor is started, the first motor drives the stirring shaft to rotate, the stirring shaft drives the stirring rod to move, and the stirring rod stirs the coated sand in the preheating furnace, thereby reducing the possibility of uneven heating and agglomeration of the coated sand in the preheating furnace.
[0022] Preferably, the feed pipe is arranged to be inclined downward from one end close to the furnace body to the other end.
[0023] By adopting the above technical solution, the inclined discharge pipe facilitates discharge of materials.
[0024] In summary, the utility model has the following beneficial effects:
[0025] 1. Open the feeding assembly, close the feeding pipe, add the coated sand into the furnace body from the feeding assembly, and start the heating plate and the second motor at the same time. The heating plate increases the temperature inside the furnace body. The second motor drives the driving rod to move, the driving rod drives the rotating shaft to move, the rotating shaft drives the spiral blade to move, and the spiral blade stirs the coated sand inside the furnace body to make the coated sand evenly heated, reducing the impact on the product quality of the coated sand. Start the shaking assembly, the shaking assembly drives the rotation and shaking, and then the spiral blade shakes, further improving the effect of uniform coating and stirring, making the coated sand evenly heated, and reducing the impact on the product quality of the coated sand.
[0026] 2. The spiral blades drive the connecting rod to move while stirring the coated sand, and the connecting rod drives the scraper rod to move. The scraper rod scrapes the inner wall of the furnace body to reduce the adhesion of the coated sand to the inside of the furnace body, and further reduce the possibility of uneven heating of the coated sand.
[0027] 3. When the shaft is rotating, the positions of the support rod and the slider remain unchanged. Since the slide groove is set in an arc surface, the shaft will drive the spiral blade to move along the length direction of the driving rod, thereby improving the effect of uniform coating and stirring, further reducing the possibility of uneven heating of the coated sand, and reducing the impact on the product quality of the coated sand. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1It is a schematic diagram of the overall structure of a coated sand roasting furnace with uniform heating.
[0029] Figure 2 Schematic diagram of the structure of the second stirring assembly.
[0030] Figure 3 It is a schematic diagram of the feeding component structure.
[0031] Figure 4 It is a schematic diagram of the shaking component structure.
[0032] Figure 5 It is a schematic diagram of the structure of the wall scraper component.
[0033] Description of reference numerals:
[0034] 1. Furnace body; 11. Feeding pipe; 12. Base; 2. Feeding assembly; 21. Preheating furnace; 211. Placement cavity; 212. Through hole; 213. Slot; 214. Preheating cavity; 22. Feeding pipe; 221. Cover plate; 23. Baffle; 24. First filter; 3. Preheating assembly; 31. Fan; 32. Air suction pipe; 33. Air outlet pipe; 34. Branch pipe; 4. Second filter; 5. First stirring assembly; 51. First A motor; 52, a stirring shaft; 53, a stirring rod; 6, a heating plate; 7, a second stirring component; 71, a second motor; 72, a driving rod; 73, a rotating shaft; 731, a slot; 732, a movable cavity; 733, a slide groove; 74, a spiral blade; 8, a shaking component; 81, a block; 82, a spring; 83, a protective box; 84, a support rod; 85, a slider; 9, a scraping component; 91, a connecting rod; 92, a scraping rod. DETAILED DESCRIPTION
[0035] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0036] A coated sand roasting furnace with uniform heating, referring to Figure 1 , Figure 2 and Figure 3, including a furnace body 1, a feeding assembly 2 is connected to the top of the furnace body 1, and a feeding pipe 11 is connected to the bottom of the furnace body 1. A heating plate 6 is embedded in the furnace body 1, and the heating plate 6 is used to heat the inside of the furnace body 1. The furnace body 1 is connected to a second stirring assembly 7, and the second stirring assembly 7 includes a second motor 71, a driving rod 72, a rotating shaft 73 and a spiral blade 74. The second motor 71 is fixedly connected to the furnace body 1, and the driving shaft of the second motor 71 extends into the furnace body 1 and is plugged into the furnace body 1. The driving rod 72 and the rotating shaft 73 are both arranged in the furnace body 1, and the driving rod 72 is fixedly connected to the driving shaft of the second motor 71. A slot 731 with a square longitudinal section is provided at the first end of the rotating shaft 73, and the driving rod 72 is inserted into the slot 731 and is plugged into the rotating shaft 73. The spiral blade 74 is sleeved on the rotating shaft 73 and is fixedly connected to the rotating shaft 73. The second stirring assembly 7 stirs the coated sand inside the furnace body 1. The rotating shaft 73 is connected with a shaking assembly 8, which is connected to the furnace body 1, and is used to drive the rotating shaft 73 to shake along the length direction of the driving rod. The second motor 71 is started, and the second motor 71 drives the driving rod 72 to move, and the driving rod 72 drives the rotating shaft 73 to move, and the rotating shaft 73 drives the spiral blade 74 to move, and the spiral blade 74 stirs the coated sand inside the furnace body 1, so that the coated sand is heated evenly, reducing the impact on the product quality of the coated sand.
[0037] Reference Figure 1 A base 12 placed on the ground is fixedly connected to the bottom of the furnace body 1. The feed pipe 11 is arranged obliquely and is arranged obliquely downward from one end close to the furnace body 1 to the other end. The feed pipe 11 is equipped with a ball valve.
[0038] Reference Figure 2 and Figure 3 The feeding assembly 2 includes a preheating furnace 21, a feeding pipe 22, a baffle 23 and a first filter 24. A placement cavity 211 and a through hole 212 are provided in the preheating furnace 21. The top of the through hole 212 is connected to the placement cavity 211, and the bottom is connected to the inside of the furnace body 1. The feeding pipe 22 is fixedly connected to the top of the preheating furnace 21, and the feeding pipe 22 connects the inside of the preheating furnace 21 and the outside. A cover plate 221 is clamped on the top of the feeding pipe 22, and the cover plate 221 blocks the feeding pipe 22. The cover plate 221 reduces the heat loss in the preheating furnace 21.
[0039] Reference Figure 2 and Figure 3 A slot 213 is provided on the side wall of the preheating furnace 21, and the slot 213 matches the baffle 23, and the slot 213 is connected to the through hole 212. The baffle 23 is inserted into the slot 213, and when the end of the baffle 23 away from the outside abuts against the preheating furnace 21, the baffle 23 passes through the through hole 212, and the baffle 23 isolates the placement cavity 211 and the interior of the furnace body 1.
[0040] The coated sand is sent into the placement cavity 211 , the baffle 23 is opened, the coated sand in the preheating furnace 21 is sent into the furnace body 1 , and then the baffle 23 is closed to process the coated sand in the furnace body 1 to reduce the heat loss inside the furnace body 1 .
[0041] Reference Figure 2 and Figure 3 A preheating chamber 214 is provided in the preheating furnace 21 , and the preheating chamber 214 is communicated with the placement chamber 211 . The top and bottom of the first filter screen 24 are fixedly connected to the furnace body 1 , and the first filter screen 24 isolates the preheating chamber 214 from the placement chamber 211 .
[0042] Reference Figure 1 , Figure 2 and Figure 3 The preheating furnace 21 is connected to a preheating assembly 3, and the preheating assembly 3 includes a fan 31, an air suction pipe 32, an air outlet pipe 33 and a branch pipe 34. The fan 31 is fixedly connected to the furnace body 1. The first end of the air suction pipe 32 is connected to the discharge pipe 11, and the second end is fixedly connected to the inlet end of the fan 31. The inner wall of the air suction pipe 32 is fixedly connected to a second filter screen 4, and the second filter screen 4 isolates the inlet end of the fan 31 from the discharge pipe 11. The first end of the air outlet pipe 33 is fixedly connected to the outlet end of the fan 31, and the second end is sealed. There are multiple branch pipes 34, one end of which is connected to the air outlet pipe 33, and the other end extends into the preheating furnace 21, and the inside of the branch pipe 34 is connected to the preheating chamber 214.
[0043] Add a proper amount of coated sand into the preheating furnace 21. When the temperature inside the furnace body 1 rises, the heat will be transferred to the coated sand in the preheating furnace 21 through the baffle 23 to preheat the coated sand in the preheating furnace 21. After the coated sand in the furnace body 1 is processed, open the discharge pipe 11. When the coated sand in the furnace body 1 is discharged, start the fan 31. The fan 31 sends the heat carried by the coated sand to the outlet pipe 33 through the suction pipe 32. The outlet pipe 33 is transported to the branch pipe 34. The branch pipe 34 sends the heat into the preheating chamber 214. The heat in the preheating chamber 214 preheats the coated sand in the preheating furnace 21 through the first filter screen 24. The second filter screen 4 reduces the possibility of the coated sand entering the suction pipe 32.
[0044] Reference Figure 3The preheating furnace 21 is connected to a first stirring assembly 5, and the first stirring assembly 5 includes a first motor 51, a stirring shaft 52 and a stirring rod 53. The first motor 51 is fixedly connected to the top of the preheating furnace 21. The driving shaft of the first motor 51 extends into the preheating furnace 21 and is plugged into the preheating furnace 21. The stirring shaft 52 and the stirring rod 53 are both arranged in the preheating furnace 21, the stirring shaft 52 is arranged vertically, and the top of the stirring shaft 52 is fixedly connected to the driving shaft of the first motor 51. There are multiple stirring rods 53. In this embodiment, there are six stirring rods 53, and the six stirring rods 53 are evenly divided into two groups. The two groups of stirring rods 53 are arranged at equal intervals along the circumference of the stirring shaft 52, and the three stirring rods 53 in the same group are arranged at equal intervals along the vertical direction. The stirring rod 53 is arranged at an angle to the stirring shaft 52.
[0045] When preheating the coated sand in the preheating furnace 21, start the first motor 51, the first motor 51 drives the stirring shaft 52 to rotate, the stirring shaft 52 drives the stirring rod 53 to move, and the stirring rod 53 stirs the coated sand in the preheating furnace 21 to reduce the possibility of uneven heating and agglomeration of the coated sand in the preheating furnace 21.
[0046] Reference Figure 4 The shaking assembly 8 includes a block 81, a spring 82, a protection box 83, a support rod 84 and a slider 85. The first end of the rotating shaft 73 is provided with an active cavity 732, and the active cavity 732 is connected to the slot 731. The block 81 and the spring 82 are both arranged in the active cavity 732. The driving rod 72 extends into the active cavity 732 through the slot 731 and is fixedly connected to the block 81. One end of the spring 82 is fixedly connected to the block 81, and the other end is fixedly connected to the rotating shaft 73.
[0047] Reference Figure 2 and Figure 4 The protection box 83 is fixedly connected to the furnace body 1. The second end of the rotating shaft 73 extends into the protection box 83 and is plugged into the protection box 83. The support rod 84 and the slider 85 are both arranged in the protection box 83, the support rod 84 is fixedly connected to the protection box 83, and the slider 85 is fixedly connected to the support rod 84.
[0048] Reference Figure 4 The end wall of the second end of the rotating shaft 73 is in an arc shape, and the center of the circle is located on the side away from the rotating shaft 73. An annular sliding groove 733 is provided on the end wall of the second end of the rotating shaft 73. The curvature of the sliding groove 733 is the same as the curvature of the end surface of the second end of the rotating shaft 73. The sliding block 85 is arranged in the sliding groove 733 and is slidably connected with the rotating shaft 73.
[0049] When the rotating shaft 73 rotates, the positions of the support rod 84 and the slider 85 remain unchanged. Since the slide groove 733 is arranged in an arc surface, the rotating shaft 73 will drive the spiral blade 74 to move along the length direction of the driving rod 72, thereby improving the effect of uniform coating and stirring.
[0050] Reference Figure 5 The spiral blade 74 is connected to a wall scraping assembly 9, which includes a connecting rod 91 and a scraping rod 92. A plurality of connecting rods 91 are provided, and the connecting rods 91 are fixedly connected to the spiral blade 74. The plurality of connecting rods 91 are arranged along the length direction of the rotating shaft 73. The scraping rod 92 is fixedly connected to the plurality of connecting rods 91, and the scraping rod 92 is in sliding contact with the interior of the furnace body 1.
[0051] The spiral blade 74 drives the connecting rod 91 to move while stirring the coated sand, and the connecting rod 91 drives the scraper rod 92 to move. The scraper rod 92 scrapes the inner wall of the furnace body 1 to reduce the adhesion of the coated sand to the inside of the furnace body 1, and further reduce the possibility of uneven heating of the coated sand.
[0052] The use principle of the present application is as follows: open the cover plate 221, add the coated sand into the preheating furnace 21 through the feeding pipe 22, move the baffle 23 to open the through hole 212, and the coated sand in the preheating furnace 21 falls into the furnace body 1. After adding an appropriate amount of coated sand into the furnace body 1, move the baffle 23 to close the through hole 212. Start the second motor 71 and the heating plate 6, and the heating plate 6 increases the temperature in the furnace body 1. The second motor 71 drives the driving rod 72 to rotate, the driving rod 72 drives the rotating shaft 73 to move, the rotating shaft 73 drives the spiral blade 74 to rotate, and the spiral blade 74 stirs the coated sand in the furnace body 1 to make the coated sand evenly heated and reduce the impact on the product quality of the coated sand.
[0053] The spiral blade 74 drives the connecting rod 91 to move while stirring the coated sand, and the connecting rod 91 drives the scraper rod 92 to move. The scraper rod 92 scrapes the inner wall of the furnace body 1 to reduce the adhesion of the coated sand to the inside of the furnace body 1, and further reduce the possibility of uneven heating of the coated sand.
[0054] After the coated sand is added to the furnace body 1 and the through hole 212 is closed, add the coated sand to the preheating furnace 21 and close the feeding pipe 22. When the temperature inside the furnace body 1 rises, the heat is transferred to the coated sand in the preheating furnace 21 through the baffle 23, and the first motor 51 is started. The first motor 51 drives the stirring shaft 52 to rotate, and the stirring shaft 52 drives the stirring rod 53 to move. The stirring rod 53 stirs the coated sand in the preheating furnace 21 to reduce the possibility of uneven heating and agglomeration of the coated sand in the preheating furnace 21.
[0055] After the processing of the coated sand in the furnace body 1 is completed, the discharge pipe 11 is opened. When the coated sand in the furnace body 1 is discharged, the fan 31 is started. The fan 31 sends the heat carried by the coated sand to the outlet pipe 33 through the suction pipe 32. The outlet pipe 33 transports the heat to the branch pipe 34. The branch pipe 34 sends the heat into the preheating chamber 214. The heat in the preheating chamber 214 preheats the coated sand in the preheating furnace 21 through the first filter screen 24.
[0056] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A uniformly heated coated sand roasting furnace, characterized in that: The invention comprises a furnace body (1), wherein a loading assembly (2) is connected to the top of the furnace body (1), a feeding pipe (11) is connected to the bottom of the furnace body (1), a heating plate (6) is embedded in the furnace body (1), the furnace body (1) is connected to a second stirring assembly (7), the second stirring assembly (7) comprises a second motor (71), a driving rod (72), a rotating shaft (73) and a spiral blade (74), the second motor (71) is connected to the furnace body (1), the driving shaft of the second motor (71) passes through the furnace body (1) and extends into the furnace body (1), the driving rod (72), the rotating shaft (73) and the spiral blade (74) are connected to the furnace body (1), the driving shaft of the second motor (71) passes through the furnace body (1) and extends into the furnace body (1), the driving rod (72) and the rotating shaft are connected to the furnace body (1), and the (73) are all arranged in the furnace body (1), the driving rod (72) is connected to the driving shaft of the second motor (71), the first end of the rotating shaft (73) is provided with a slot (731), the driving rod (72) is inserted into the slot (731) and is engaged with the rotating shaft (73), the spiral blade (74) is sleeved on the rotating shaft (73) and is connected to the rotating shaft (73), the rotating shaft (73) is connected to a shaking component (8) that makes the rotating shaft (73) shake along the length direction of the driving rod (72), and the shaking component (8) is connected to the furnace body (1).
2. The uniformly heated coated sand roasting furnace according to claim 1, characterized in that: The shaking assembly (8) comprises a protection box (83), a support rod (84) and a slider (85); the protection box (83) is connected to the furnace body (1); the second end of the rotating shaft (73) extends into the protection box (83) and is slidably connected to the protection box (83); the support rod (84) and the slider (85) are both arranged in the protection box (83); the support rod (84) is connected to the protection box (83); the slider (85) is connected to the support rod (84); the end wall of the second end of the rotating shaft (73) is in an arc shape; the second end of the rotating shaft (73) is provided with an annular slide groove (733); the curvature of the slide groove (733) is the same as the curvature of the end surface of the second end of the rotating shaft (73); the slider (85) is arranged in the slide groove (733) and is slidably connected to the rotating shaft (73).
3. The uniformly heated coated sand roasting furnace according to claim 2, characterized in that: The shaking assembly (8) further comprises a clamping block (81) and a spring (82); an active cavity (732) communicating with the clamping slot (731) is provided in the rotating shaft (73); the clamping block (81) and the spring (82) are both arranged in the active cavity (732); the driving rod (72) passes through the clamping slot (731) and extends into the active cavity (732); the driving rod (72) is connected to the clamping block (81); the clamping block (81) is slidably connected to the rotating shaft (73); one end of the spring (82) is connected to the clamping block (81) and the other end is connected to the rotating shaft (73).
4. A uniformly heated coated sand roasting furnace according to any one of claims 1 to 3, characterized in that: The spiral blade (74) is connected to a wall scraper assembly (9), and the wall scraper assembly (9) comprises a connecting rod (91) and a scraper rod (92). One end of the connecting rod (91) is connected to the spiral blade (74), and the other end is connected to the scraper rod (92). The scraper rod (92) is in sliding contact with the inner wall of the furnace body (1).
5. The uniformly heated coated sand roasting furnace according to claim 1, characterized in that: The feeding assembly (2) comprises a preheating furnace (21), a feeding pipe (22) and a baffle (23); the preheating furnace (21) is connected to the furnace body (1); a placement cavity (211) and a through hole (212) are provided in the preheating furnace (21); the through hole (212) communicates the placement cavity (211) with the interior of the furnace body (1); the feeding pipe (22) is connected to the preheating furnace (21); the feeding pipe (22) communicates the placement cavity (211) with the outside; a slot (213) connected to the through hole (212) is provided on the side wall of the preheating furnace (21); the baffle (23) is inserted into the slot (213); when the baffle (23) passes through the through hole (212), the through hole (212) and the placement cavity (211) are isolated.
6. The uniformly heated coated sand roasting furnace according to claim 5, characterized in that: The feeding assembly (2) further comprises a first filter screen (24); a preheating chamber (214) is provided in the preheating furnace (21); the preheating chamber (214) is communicated with the placement chamber (211); the first filter screen (24) isolates the preheating chamber (214) from the placement chamber (211); the top and bottom of the first filter screen (24) are both connected to the preheating furnace (21); The preheating furnace (21) is connected to a preheating component (3), the preheating component (3) comprising a fan (31), an air suction pipe (32), an air outlet pipe (33) and a branch pipe (34); the fan (31) is connected to the furnace body (1); a first end of the air suction pipe (32) is connected to the material discharge pipe (11), and a second end is connected to an inlet end of the fan (31); an inner wall of the air suction pipe (32) is connected to a second filter screen (4), and the second filter screen (4) isolates an air inlet of the fan (31) and the material discharge pipe (11); one end of the air outlet pipe (33) is connected to an outlet end of the fan (31), and the other end is closed; the branch pipe (34) is connected to the air outlet pipe (33); the second end of the branch pipe (34) is inserted into the preheating furnace (21) and is connected to the preheating chamber (214).
7. The uniformly heated coated sand roasting furnace according to claim 6, characterized in that: The feeding pipe (22) is connected to a cover plate (221), and the cover plate (221) blocks the feeding pipe (22).
8. The uniformly heated coated sand roasting furnace according to claim 6, characterized in that: The preheating furnace (21) is connected to a first stirring assembly (5), the first stirring assembly (5) comprising a first motor (51), a stirring shaft (52) and a stirring rod (53), the first motor (51) being connected to the preheating furnace (21), the driving shaft of the first motor (51) extending into the preheating furnace (21) and plugged into the preheating furnace (21), the stirring shaft (52) and the stirring rod (53) being arranged in the first filter screen (24), the stirring shaft (52) being connected to the driving shaft of the first motor (51), the stirring rod (53) being connected to the stirring shaft (52), and the stirring shaft (52) being arranged at an angle.
9. The uniformly heated coated sand roasting furnace according to claim 1, characterized in that: The feed pipe (11) is arranged to be inclined downward from one end close to the furnace body (1) to the other end.