Heater structure of feeding hopper of drying machine

Abstract

The utility model discloses a dryer feed hopper heater structure which comprises a dryer feed hopper body and a base plate, the top of the dryer feed hopper body is open, the two sides of the inner periphery of the top of the dryer feed hopper body are respectively provided with a dismounting assembly, and the base plate is horizontally fixed between the tops of the dismounting assemblies. The drying machine feeding hopper has the advantages that the base plate and the heating assembly can be detachably fixed to the top of the inner periphery of the drying machine feeding hopper body in the mode that the inserting blocks are in vertical sliding fit with the inserting grooves and the limiting rods are in transverse sliding fit with the limiting holes, and the combination mode of the base plate, the heating assembly and the drying machine feeding hopper body is simple and easy to operate; and then heating and heat preservation can be conveniently conducted on the gypsum material falling into the dryer feeding hopper body through the heating assembly, the situation that the temperature of the gypsum material is reduced in the feeding process is prevented, and the situations that the strength of alpha-type semi-hydrated high-strength gypsum crystals is reduced and the crystals are reduced are avoided.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary components for alpha high-strength gypsum production, in particular to a heater structure for a feed hopper of a drying machine. Background Art

[0002] Industrial by-product gypsum refers to the by-product or waste residue with calcium sulfate as the main component generated by chemical reactions in industrial production, also known as chemical gypsum or industrial waste gypsum. Using industrial waste gypsum as raw material to prepare α high-strength gypsum is an emerging industrial waste gypsum utilization technology, which can effectively solve the problem of industrial by-product gypsum storage. In the process of preparing α high-strength gypsum with industrial waste gypsum as raw material, the main process principle is: industrial by-product gypsum powder (the main component is calcium sulfate dihydrate CaSO4.2H2O) is mixed and stirred with a certain proportion of water and a crystal-changing agent to form a dihydrate gypsum slurry, which enters the autoclave reactor. Under pressurized and heated conditions, the double-layer structure of the dihydrate gypsum in the slurry is destroyed, 3 / 4 of the H2O between the two ion layers is lost, and the remaining H2O recrystallizes with CaSO4 to become α-type semi-hydrated high-strength gypsum crystals, and then the crystallized After being filtered and dehydrated, the gypsum material is transported to a drying furnace for high-temperature calcination to produce α high-strength gypsum products. During the transportation of the gypsum material to the drying furnace, an insulation cover is required to be added at the feed hopper to insulate the gypsum material transported into the feed hopper after filtration. The purpose is to prevent the temperature of the gypsum material from dropping during the feeding process, so as to avoid the strength reduction and crystal reduction of α-type semi-hydrated high-strength gypsum crystals. However, the effect achieved by only adding an insulation cover is general, and it is often necessary to add a heater at the top of the feed hopper to improve the insulation effect of the feed. However, in the specific installation design of the current heater, it is usually firstly welded to the inner periphery of the feed hopper to install the bracket, and then the heater is fixed to the installation bracket by adding bolts, which makes it very inconvenient to disassemble and assemble the heater in the later stage, and it is not convenient to regularly clean and maintain the inside of the feed hopper. Utility Model Content

[0003] The purpose of the utility model is to provide a dryer feed hopper heater structure in order to solve the above-mentioned problem. The base plate and the heating component can be detachably fixed to the inner top of the dryer feed hopper body by means of vertical sliding cooperation between the plug block and the slot and horizontal sliding cooperation between the limit rod and the limit hole. The combination of the base plate and the heating component with the dryer feed hopper body is simple and easy to operate, and then it is convenient to heat and keep warm the gypsum material falling into the dryer feed hopper body through the heating component, which is beneficial to prevent the temperature of the gypsum material from dropping during the feeding process. See the following description for details.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model provides a dryer feed hopper heater structure, comprising a dryer feed hopper body and a base plate, wherein the top of the dryer feed hopper body is open, and disassembly components are installed on both sides of the top inner periphery of the dryer feed hopper body, and the base plate is horizontally fixed between the tops of the disassembly components, and the base plate is detachably connected to the disassembly components;

[0006] A heating component for heating and keeping the fallen gypsum material warm is installed on the top surface of the substrate.

[0007] Preferably, a connecting flange is horizontally extended and fixed to the periphery of the bottom of the dryer feed hopper body, and a plurality of connecting holes are vertically fixed around the connecting flange.

[0008] Preferably, the heating assembly includes an electric heating plate and a material guide plate, a lower connecting rod is vertically fixed to the middle part of the top surface of the substrate through a connecting sleeve, and the top end of the lower connecting rod is coaxially fixed with the horizontally arranged electric heating plate through the connecting sleeve, a top cover is coaxially fixed to the top of the electric heating plate, and an upper connecting rod is vertically coaxially fixed to the top surface of the top cover through the connecting sleeve, the top end of the upper connecting rod is coaxially fixed with the material guide plate through a connecting sleeve, and the material guide plate is a conical structure with the pointed end facing upward.

[0009] Preferably, the upper connecting rod and the lower connecting rod are combined and connected with the corresponding connecting sleeves by means of threaded fitting.

[0010] Preferably, the outer diameter of the bottom of the material guiding plate is larger than the outer diameter of the electric heating plate.

[0011] Preferably, both sides of the top surface of the substrate are covered and fixed with dividing blocks, the ends of the dividing blocks at both sides close to each other extend to the bottom of the guide plate, and the cross-sectional shape of the dividing blocks along the longitudinal vertical plane is an isosceles triangle.

[0012] Preferably, the disassembly and assembly components include plug blocks and wing plates, the plug blocks are vertically fixed on both sides of the bottom surface of the base plate, the outer end surfaces of the plug blocks at both sides that are away from each other are horizontally provided with limit holes, the wing plates are horizontally extended and fixed on the top of both sides of the inner periphery of the dryer feed hopper body, the top surfaces of the wing plates are vertically fixed with fixing sleeves, and the top surfaces of the fixing sleeves are vertically provided with slots, the slots correspond one-to-one with the plug blocks and are vertically slidably matched.

[0013] Preferably, the inner end surfaces of the fixing sleeves at both sides that are close to each other are both transversely provided with mounting holes, the mounting holes are both vertically connected to the corresponding slots, and the mounting holes are both transversely coaxially aligned with the corresponding limiting holes, the mounting holes are both transversely coaxially slidably matched with limiting rods, and the outer ends of the limiting rods at both sides that are away from each other are both transversely slidably matched with the corresponding limiting holes, the inner ends of the limiting rods at both sides that are close to each other extend out of the corresponding inner end surfaces of the fixing sleeves and are coaxially fixed with handles, the part of the limiting rod located between the corresponding handle and the inner end surface of the fixing sleeve is coaxially gap-matched with a spring, and the two ends of the spring are respectively fixedly connected to the corresponding handle and the inner end surface of the fixing sleeve.

[0014] Preferably, the horizontal cross-section shapes of the plug block and the slot are both rectangular.

[0015] Preferably, the slots are blind slots in the vertical direction, and the bottom ends of the insert blocks are in close contact with the bottom ends of the corresponding slots.

[0016] The above-mentioned dryer feed hopper heater structure is adopted. Specifically, during the use of the heating component, since the insert block is vertically slidably matched with the slot at the beginning, and the limit rod is horizontally slidably matched with the limit hole, the base plate and the heating component can be detachably fixed to the top of the inner circumference of the dryer feed hopper body by means of the vertical sliding cooperation between the insert block and the slot and the horizontal sliding cooperation between the limit rod and the limit hole. The combination of the base plate, the heating component and the dryer feed hopper body is simple and easy to operate, and then it is convenient to heat and keep warm the gypsum material falling into the dryer feed hopper body through the heating component, which is beneficial to prevent the temperature of the gypsum material from dropping during the feeding process. The strength reduction and crystal reduction of α-type semi-hydrated high-strength gypsum crystals are avoided. When the substrate and the heating component need to be removed later, the heat preservation cover on the outer periphery of the dryer feed hopper body is first removed to expose the substrate and the heating component. Then, two people hold the handles on both sides at the same time to pull the limit rods and make the outer ends of the limit rods disengage from the corresponding limit holes through the stretching of the springs. Then, the substrate can be lifted up while keeping the limit rods pulled so that the plug blocks can be vertically disengaged from the slots. The substrate and the heating component are then removed from the inner periphery of the dryer feed hopper body. When the substrate and the heating component need to be installed again, the substrate is picked up to separate the plug blocks from the slots. When the two persons pull the corresponding limiting rods horizontally at the same time again and the outer ends of the limiting rods are retracted into the corresponding mounting holes by stretching the springs, the limiting rods are prevented from interfering with the insertion blocks sliding vertically downward along the slots. When the insertion blocks slide vertically downward along the slots until the bottom ends of the insertion blocks are in contact with the corresponding bottom ends of the slots, it means that the limiting rods are horizontally aligned with the limiting holes respectively. Then, the handle is released, and the springs release the stretched state to drive the limiting rods to be inserted into the corresponding limiting holes, so as to complete the reinstallation and fixation of the substrate and the heating assembly on the top of the inner periphery of the dryer feed hopper body again. The disassembly and combination method with the dryer feed hopper body is simple and easy to operate, which is convenient for quickly fixing the substrate and the heating component on the top of the inner periphery of the dryer feed hopper body for heating and heat preservation, and is also convenient for regular cleaning and maintenance of the interior of the dryer feed hopper body after the substrate and the heating component are disassembled at a later time. Since the guide plate is installed on the top of the heating component, the guide plate is a conical structure with a pointed head facing upward, and the guide plate is suspended directly above the electric heating plate and blocks the electric heating plate. Then, during the material dropping process, the setting of the guide plate can prevent the gypsum material from accumulating at the guide plate position and failing to fall smoothly into the dryer feed hopper body, which is conducive to ensuring smooth material dropping.

[0017] The beneficial effects are as follows: 1. The utility model can detachably fix the substrate and the heating component to the inner top of the feed hopper body of the dryer by means of the vertical sliding cooperation between the plug block and the slot and the horizontal sliding cooperation between the limit rod and the limit hole. The combination of the substrate and the heating component with the feed hopper body of the dryer is simple and easy to operate, and then it is convenient to heat and keep the gypsum material falling into the feed hopper body of the dryer by the heating component, which is beneficial to prevent the temperature of the gypsum material from dropping during the feeding process, and avoid the strength drop and crystal reduction of α-type semi-hydrated high-strength gypsum crystals;

[0018] 2. Simply pull the limit rod out of the limit hole to make the insert block vertically out of the slot and remove the substrate heating assembly from the top of the inner periphery of the dryer feed hopper body. The separation method of the substrate and the heating assembly from the dryer feed hopper body is simple and easy to operate, which is convenient for quickly fixing the substrate and the heating assembly on the top of the inner periphery of the dryer feed hopper body for heating and heat preservation. At the same time, it is convenient for regular cleaning and maintenance of the inside of the dryer feed hopper body after the substrate and the heating assembly are removed later.

[0019] 3. A guide plate is installed on the top of the heating component. The guide plate is a conical structure with the pointed end facing upward. At the same time, the guide plate is suspended directly above the electric heating plate and blocks the electric heating plate. In the process of material dropping, the setting of the guide plate can prevent the gypsum material from accumulating at the position of the guide plate and failing to fall smoothly into the dryer feed hopper body, which is conducive to ensuring smooth material dropping. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is an overall axonometric schematic diagram of the utility model;

[0022] Figure 2 This utility model Figure 1 Cross-section diagram Figure 1 ;

[0023] Figure 3 This utility model Figure 2 A local enlarged view of point A;

[0024] Figure 4 This utility model Figure 1 Cross-section diagram Figure 3 ;

[0025] Figure 5 This utility model Figure 4 A partial enlarged view of point B;

[0026] Figure 6 This utility model Figure 1 The front view of the external image;

[0027] Figure 7 This utility model Figure 1 The left external view of

[0028] Figure 8 This utility model Figure 1 A top view of the exterior;

[0029] Fig. 9 This utility model Figure 1 External view from above.

[0030] The following are the descriptions of the reference numerals:

[0031] 1. Heating assembly; 101. Material guide plate; 102. Material dividing block; 103. Top cover; 104. Electric heating plate; 105. Upper connecting rod; 106. Lower connecting rod; 107. Connecting sleeve; 2. Base plate; 3. Dryer feed hopper body; 301. Connecting flange; 302. Connecting hole; 4. Disassembly and assembly assembly; 401. Insert block; 402. Slot; 403. Fixing sleeve; 404. Spring; 405. Wing plate; 406. Handle; 407. Limiting hole; 408. Limiting rod; 409. Mounting hole. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0033] See also Figure 1-Figure 9As shown, the utility model provides a dryer feed hopper heater structure, including a dryer feed hopper body 3 and a base plate 2, the top of the dryer feed hopper body 3 is open, and disassembly components 4 are installed on both sides of the top inner periphery of the dryer feed hopper body 3, the base plate 2 is horizontally fixed between the tops of the disassembly components 4, and the base plate 2 and the disassembly components 4 are detachably connected, specifically, the disassembly components 4 include plug blocks 401 and wing plates 405, and the plug blocks 401 are vertically fixed on both sides of the bottom surface of the base plate 2, and the plug blocks 401 at the two sides are far away from each other. The outer end surfaces of the dryer feed hopper body 3 are provided with limit holes 407 in the horizontal direction, and the tops of the inner sides of the dryer feed hopper body 3 are horizontally extended with wing plates 405, and the top surfaces of the wing plates 405 are vertically fixed with fixing sleeves 403, and the top surfaces of the fixing sleeves 403 are vertically provided with slots 402, and the slots 402 correspond to the plug blocks 401 one by one and are vertically slidably matched, and the inner end surfaces of the fixing sleeves 403 at the two sides that are close to each other are provided with mounting holes 409 in the horizontal direction, and the mounting holes 409 are vertically connected with the corresponding slots 402, and the mounting holes 409 The mounting holes 409 are coaxially matched with the limiting rods 408 in a transversely coaxial manner, and the outer ends of the limiting rods 408 at the two side positions that are away from each other are transversely matched with the corresponding limiting holes 407, and the inner ends of the limiting rods 408 at the two side positions that are close to each other extend out of the inner end surface of the corresponding fixing sleeve 403 and are coaxially fixed with the handle 406, and the part of the limiting rod 408 located between the corresponding handle 406 and the inner end surface of the fixing sleeve 403 is coaxially matched with the spring 404, and the spring 404 is The two ends are fixedly connected to the corresponding handles 406 and the inner end faces of the fixing sleeve 403 respectively. With such an arrangement, the substrate 2 and the heating component 1 can be detachably fixed to the inner top of the dryer feed hopper body 3 by means of vertical sliding cooperation between the plug block 401 and the slot 402 and horizontal sliding cooperation between the limit rod 408 and the limit hole 407. At the same time, the plug block 401 can be vertically disengaged from the slot 402 by simply pulling the limit rod 408 out of the limit hole 407, so that the substrate 2 and the heating component 1 can be detached from the inner top of the dryer feed hopper body 3.

[0034] The top surface of the substrate 2 is provided with a heating assembly 1 for heating and keeping the falling gypsum material warm. Specifically, the heating assembly 1 includes an electric heating plate 104 and a material guide plate 101. A lower connecting rod 106 is vertically fixed to the middle of the top surface of the substrate 2 through a connecting sleeve 107, and the top of the lower connecting rod 106 is coaxially fixed with a horizontally arranged electric heating plate 104 through a connecting sleeve 107. A top cover 103 is coaxially fixed to the top of the electric heating plate 104, and the top surface of the top cover 103 is connected to the top surface of the connecting sleeve 107. An upper connecting rod 105 is coaxially fixed vertically to 107, and a material guide plate 101 is coaxially fixed to the top of the upper connecting rod 105 through a connecting sleeve 107, and the material guide plate 101 is a conical structure with the pointed end facing upward. Such an arrangement facilitates heating and heat preservation of the falling materials by energizing the electric heating plate 104. At the same time, during the falling process, the arrangement of the material guide plate 101 can prevent the gypsum material from accumulating at the position of the material guide plate 101 and failing to fall smoothly into the dryer feed hopper body 3.

[0035] As a preferred solution in this case, a connecting flange 301 is horizontally extended and fixed on the bottom periphery of the dryer feed hopper body 3, and a plurality of connecting holes 302 are vertically fixed around the connecting flange 301. This arrangement allows the dryer feed hopper body 3 to be fixed in the installation position by adding bolts to the installation position through the connecting holes 302 of the connecting flange 301. The upper connecting rod 105 and the lower connecting rod 106 are combined and connected with the corresponding connecting sleeve 107 by threaded matching. This arrangement allows the upper connecting rod 105 and the lower connecting rod 106 to be quickly combined with the connecting sleeve 107. The bottom outer diameter of the material guide plate 101 is larger than the outer diameter of the electric heating plate 104. The material guide plate 101 is preferably made of metal. This arrangement allows the bottom of the material guide plate 101 to have a large enough area to cover the electric heating plate 104.

[0036] At the same time, both sides of the top surface of the substrate 2 are covered and fixed with dividing blocks 102, and the ends of the dividing blocks 102 at the two side positions that are close to each other extend to the bottom of the guide plate 101, and the cross-sectional shapes of the dividing blocks 102 along the longitudinal vertical plane are all isosceles triangles. This arrangement makes it easy for the falling gypsum material to fall smoothly to the bottom of the substrate 2 by setting the dividing blocks 102. The horizontal cross-sectional shapes of the plug block 401 and the slot 402 are both rectangular. This arrangement makes it easy for the plug block 401 and the slot 402 to have a good positioning and guiding design when they slide vertically. The slots 402 are all blind slots in the vertical direction, and the bottom ends of the plug blocks 401 are in close contact with the bottom ends of the corresponding slots 402. This arrangement makes it easy for the limit rod 408 to be horizontally compared with the limit hole 407, and an obvious prompt can be given by the contact between the bottom end of the plug block 401 and the bottom end of the slot 402.

[0037] With the above structure, specifically during the use of the heating component 1, at the beginning, the plug block 401 and the slot 402 are vertically slidably matched, and the limiting rod 408 and the limiting hole 407 are horizontally slidably matched. Then, the base plate 2 and the heating component 1 can be detachably fixed to the top of the inner periphery of the dryer feed hopper body 3 by means of the vertical sliding cooperation between the plug block 401 and the slot 402 and the horizontal sliding cooperation between the limiting rod 408 and the limiting hole 407. The combination of the base plate 2 and the heating component 1 and the dryer feed hopper body 3 is simple and easy to operate, and then it is convenient to heat and keep warm the gypsum material falling into the dryer feed hopper body 3 through the heating component 1, which is beneficial to prevent the temperature of the gypsum material from dropping during the feeding process and avoid the α-type semi-hydrated high-strength stone The paste crystals show a decrease in strength and the crystals are restored. When the substrate 2 and the heating component 1 need to be removed later, the insulation cover on the outer periphery of the dryer feed hopper body 3 is first removed to expose the substrate 2 and the heating component 1. Then two people hold the handles 406 on both sides at the same time to pull the limit rod 408 and stretch the spring 404 to make the outer ends of the limit rod 408 slip out of the corresponding limit hole 407. Then, keeping the limit rod 408 pulled, the substrate 2 can be lifted up to make the plug blocks 401 vertically slip out of the slots 402. The substrate 2 and the heating component 1 are immediately removed from the inner periphery of the dryer feed hopper body 3. When the substrate 2 and the heating component 1 need to be installed again, the substrate 2 is picked up to make the plug blocks 401 and the slots 402 vertically align and align them from top to bottom. The two persons pull the corresponding limit rod 408 laterally again and stretch the spring 404 so that the outer ends of the limit rods 408 are inserted into the corresponding mounting holes 409, so as to prevent the limit rods 408 from interfering with the insertion block 401 sliding vertically downward along the slot 402. When the insertion blocks 401 slide vertically down along the slot 402 until the bottom ends of the insertion blocks 401 are in contact with the bottom ends of the corresponding slots 402, it means that the limit rods 408 and the limit holes 407 are respectively aligned horizontally. Then, the handle 406 is released, and the spring 404 releases the stretched state and drives the limit rods 408 to be inserted into the corresponding limit holes 407, so as to complete the reinstallation and fixation of the substrate 2 and the heating component 1 on the top of the inner periphery of the dryer feed hopper body 3 again. The disassembly and combination of the substrate 2 and the dryer feed hopper body 3 is simple and easy to operate, which is convenient for quickly fixing the substrate 2 and the heating component 1 on the top of the inner periphery of the dryer feed hopper body 3 for heating and heat preservation, and is convenient for regular cleaning and maintenance of the inside of the dryer feed hopper body 3 after the substrate 2 and the heating component 1 are disassembled at a later time. Since a guide plate 101 is installed on the top of the heating component 1, the guide plate 101 is a conical structure with a pointed end facing upward, and the guide plate 101 is suspended directly above the electric heating plate 104 and blocks the electric heating plate 104, the setting of the guide plate 101 can prevent the gypsum material from accumulating at the position of the guide plate 101 and failing to fall smoothly into the dryer feed hopper body 3 during the material dropping process, which is conducive to ensuring smooth material dropping.

[0038] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A dryer feed hopper heater structure, comprising a dryer feed hopper body (3) and a base plate (2), characterized in that: The top of the dryer feed hopper body (3) is open, and disassembly and assembly components (4) are installed on both sides of the top inner periphery of the dryer feed hopper body (3), and the base plate (2) is horizontally fixed between the tops of the disassembly and assembly components (4), and the base plate (2) and the disassembly and assembly components (4) are detachably connected; A heating component (1) for heating and keeping the fallen gypsum material warm is installed on the top surface of the substrate (2); The disassembly and assembly components (4) each comprise an insert block (401) and a wing plate (405), the insert blocks (401) being vertically fixed on both sides of the bottom surface of the base plate (2), the outer end surfaces of the insert blocks (401) at both sides being away from each other are both provided with limit holes (407) in the transverse direction, the wing plates (405) are horizontally extended and fixed on the tops of both sides of the inner periphery of the dryer feed hopper body (3), the top surfaces of the wing plates (405) are vertically fixed with fixing sleeves (403), and the top surfaces of the fixing sleeves (403) are vertically provided with slots (402), the slots (402) correspond one-to-one with the insert blocks (401) and are vertically slidably matched; The inner end surfaces of the fixing sleeves (403) at the two side positions close to each other are both provided with mounting holes (409) in the transverse direction, the mounting holes (409) are both vertically connected with the corresponding slots (402), and the mounting holes (409) are both transversely coaxially aligned with the corresponding limiting holes (407), the mounting holes (409) are both coaxially slidably matched with limiting rods (408) in the transverse direction, and the outer ends of the limiting rods (408) at the two side positions that are away from each other are both aligned with the corresponding limiting holes (407). The inner ends of the limit rods (408) at the two side positions that are close to each other extend out of the inner end surface of the corresponding fixing sleeve (403) and are coaxially fixed with a handle (406); the portion of the limit rod (408) located between the corresponding handle (406) and the inner end surface of the fixing sleeve (403) is coaxially fitted with a spring (404) in a clearance, and the two ends of the spring (404) are respectively fixedly connected to the corresponding handle (406) and the inner end surface of the fixing sleeve (403).

2. A dryer feed hopper heater structure according to claim 1, characterized in that: A connecting flange (301) is horizontally extended and fixed to the periphery of the bottom of the dryer feed hopper body (3), and a plurality of connecting holes (302) are vertically fixed around the connecting flange (301).

3. A dryer feed hopper heater structure according to claim 1 or 2, characterized in that: The heating component (1) comprises an electric heating plate (104) and a material guide plate (101); a lower connecting rod (106) is vertically fixed to the middle of the top surface of the base plate (2) via a connecting sleeve (107); the top end of the lower connecting rod (106) is coaxially fixed with the horizontally arranged electric heating plate (104) via the connecting sleeve (107); a top cover (103) is coaxially fixed to the top of the electric heating plate (104); an upper connecting rod (105) is vertically coaxially fixed to the top surface of the top cover (103) via the connecting sleeve (107); the top end of the upper connecting rod (105) is coaxially fixed with the material guide plate (101) via the connecting sleeve (107); and the material guide plate (101) is a conical structure with the pointed end facing upward.

4. A dryer feed hopper heater structure according to claim 3, characterized in that: The upper connecting rod (105) and the lower connecting rod (106) are combined and connected with the corresponding connecting sleeve (107) by means of threaded fitting.

5. A dryer feed hopper heater structure according to claim 4, characterized in that: The outer diameter of the bottom of the material guide plate (101) is greater than the outer diameter of the electric heating plate (104).

6. A dryer feed hopper heater structure according to claim 5, characterized in that: Both sides of the top surface of the base plate (2) are covered and fixed with dividing blocks (102), the ends of the dividing blocks (102) at both sides that are close to each other extend to the bottom of the guide plate (101), and the cross-sectional shape of the dividing blocks (102) along the longitudinal vertical plane is an isosceles triangle.

7. A dryer feed hopper heater structure according to claim 4, 5 or 6, characterized in that: The horizontal cross-sectional shapes of the insert block (401) and the slot (402) are both rectangular.

8. A dryer feed hopper heater structure according to claim 7, characterized in that: The slots (402) are all blind slots in the vertical direction, and the bottom ends of the insert blocks (401) are in close contact with the bottom ends of the corresponding slots (402).

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