Heat preservation cover structure of feeding hopper of drying machine

Abstract

The utility model discloses a dryer feed hopper heat preservation cover structure which comprises a dryer feed hopper body and a heat preservation cover, and the top of the dryer feed hopper body is open. The drying machine feeding hopper has the advantages that the frame assembly and the heat preservation cover can be detachably fixed to the top of the drying machine feeding hopper body in the mode that the lower portion of the telescopic vertical rod is in vertical sliding fit with the fixing sleeve and the limiting rod is in radial sliding fit with the limiting hole, and the periphery of the drying machine feeding hopper body is covered with the heat preservation cover; the fixed combination mode of the frame assembly, the heat preservation cover and the dryer feeding hopper body is simple and easy to operate, and then in the process of feeding gypsum materials into the dryer feeding hopper body, heat preservation is conveniently conducted on the fed gypsum materials from the outside in the mode that the heat preservation cover covers the periphery of the top of the dryer feeding hopper body; the condition that the temperature of the gypsum material is reduced in the feeding process is favorably prevented, and the conditions that the strength of the alpha-type semi-hydrated high-strength gypsum crystal is reduced and the crystal is 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 heat preservation cover structure of 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 dihydrate calcium sulfate CaSO4.2H2O) is mixed and stirred with a certain proportion of water and crystallization agent to form dihydrate gypsum slurry, which enters the autoclave reactor. Under pressurized and heated conditions, the double-layer structure of dihydrate gypsum in the slurry is destroyed, 3 / 4 of the H2O between the two ion layers is lost, and the remaining H2O reacts with CaSO4 Re-crystallization, after crystallization, becomes α-type semi-hydrated high-strength gypsum crystals, and then the crystallized gypsum material is filtered and dehydrated, and then transported to a drying furnace for high-temperature calcination to become an α-high-strength gypsum product. In the process of transporting the gypsum material to the drying furnace, it is necessary to add a heat preservation cover at the feed hopper position to insulate the gypsum material transported into the feed hopper after filtration, in order to prevent the temperature of the gypsum material from dropping during the feeding process, so as to avoid the strength drop and crystal reduction of the α-type semi-hydrated high-strength gypsum crystals. However, during the specific installation and setting of the current heat preservation cover, it is usually first welded to the periphery of the feed hopper, and then the heat preservation cover is fixed to the periphery of the frame for installation, which makes it very inconvenient to disassemble and assemble the heat preservation cover 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 insulation cover structure in order to solve the above-mentioned problem. The frame assembly and the insulation cover can be detachably fixed on the top of the dryer feed hopper body and the insulation cover can be covered on the periphery of the dryer feed hopper body by means of vertical sliding cooperation between the lower part of the telescopic vertical rod and the fixed sleeve and radial sliding cooperation between the limit rod and the limit hole. The fixed combination of the frame assembly, the insulation cover and the dryer feed hopper body is simple and easy to operate, as described below 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 heat preservation cover structure, comprising a dryer feed hopper body and a heat preservation cover, wherein the top of the dryer feed hopper body is open, a skirt plate is horizontally extended and fixed to the outer periphery of the top of the dryer feed hopper body, and disassembly and assembly components are installed at the four corners of the skirt plate;

[0006] The bottom of the heat preservation cover is open and inverted above the top periphery of the dryer feed hopper body, and the top of the heat preservation cover is provided with a feed inlet for connecting the input gypsum material;

[0007] A frame component is installed on the inner periphery of the heat preservation cover, and the disassembly component is partially arranged at the lower parts of the four corners of the frame component, and the lower parts of the four corners of the frame component are detachably connected to the disassembly component respectively.

[0008] 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.

[0009] Preferably, the heat-insulating cover is a cloth cover in the shape of a regular hexahedron, the inner periphery of the heat-insulating cover is close to but not touching the corresponding edge of the outer periphery of the skirt plate, and the bottom end of the heat-insulating cover is lower than the top end of the dryer feed hopper body.

[0010] Preferably, the frame assembly includes a base block and a telescopic vertical rod, the base blocks are horizontally arranged at the four corners of the inner top surface of the heat preservation cover, the top surface of the base block is horizontally fixed with a supporting top block, and the supporting top blocks are respectively fixed at the four corners of the inner top surface of the heat preservation cover to prop up and fix the top four corners of the heat preservation cover through the supporting top blocks, the base blocks at the surrounding positions are horizontally fixed with shaping rods through connecting sleeves, the bottom surfaces of the base blocks at the surrounding positions are vertically fixed with the telescopic vertical rods through the connecting sleeves, and the bottom ends of the telescopic vertical rods are detachably connected to the corresponding disassembly and assembly components.

[0011] Preferably, the telescopic uprights are all double-section pull-out telescopic rods with locking screws.

[0012] Preferably, the shaping rod and the shaping rod are coaxially tightly matched with the corresponding connecting sleeve.

[0013] Preferably, the disassembly and assembly components include limiting holes and fixing sleeves, the bottom of the telescopic vertical rod is horizontally provided with the limiting holes along its own radial direction, and the limiting holes are arranged longitudinally, the fixing sleeves are vertically fixed to the four corners of the top surface of the skirt plate, and the fixing sleeves correspond to the telescopic vertical rod one by one and are vertically slidably matched.

[0014] Preferably, the fixing sleeves are provided with mounting holes horizontally along their own radial direction, the mounting holes are through holes and are arranged longitudinally, the mounting holes at the front and rear positions are coaxially slidably matched with limit rods along the longitudinal direction, and the ends of the limit rods at the front and rear positions that are away from each other are longitudinally slidably matched with the corresponding limit holes, and the ends of the limit rods at the front and rear positions that are close to each other extend out of the periphery of the corresponding fixing sleeve and are coaxially fixed with a handle, the coaxial gap of the limit rod between the handle and the periphery of the fixing sleeve is matched with a spring, and the two ends of the spring are respectively fixedly connected to the handle and the periphery of the fixing sleeve.

[0015] Preferably, the horizontal cross-sections of the fixing sleeve and the telescopic upright pole are both circular.

[0016] Preferably, the bottom ends of the telescopic uprights are in close contact with the inner bottom ends of the corresponding fixing sleeves.

[0017] The above-mentioned heat preservation cover structure of the dryer feed hopper is adopted. Specifically, during the use of the heat preservation cover, at the beginning, the lower part of the telescopic vertical rod is vertically coaxially slidably matched with the fixed sleeve, and the limit rod is radially slidably matched with the limit hole along the fixed sleeve. At this time, the frame assembly and the heat preservation cover can be detachably fixed to the top of the dryer feed hopper body by the vertical sliding cooperation between the lower part of the telescopic vertical rod and the fixed sleeve and the radial sliding cooperation between the limit rod and the limit hole, and the heat preservation cover is covered on the periphery of the dryer feed hopper body. The fixed combination method of the frame assembly, the heat preservation cover and the dryer feed hopper body is simple and easy to operate, and then when feeding the dryer feed hopper body, the frame assembly and the heat preservation cover can be fixed to the top of the dryer feed hopper body in a radial manner. During the process of feeding gypsum material into the body, it is convenient to insulate the incoming gypsum material from the outside by covering the outer periphery of the top of the dryer feed hopper body with the heat-insulating cover, 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. When the frame assembly and the heat-insulating cover need to be removed later, the heat-insulating cover is pulled upward from the lower part of the heat-insulating cover to expose the fixed cover, and then multiple people hold all the handles at the same time to pull the limit rod outward and make the inner ends of the limit rods fall out of the corresponding limit holes by the stretching of the springs. After that, the limit rods are kept pulled outward to pick up the telescopic vertical rod and rise vertically to fall out of the fixed cover. The frame assembly and the heat preservation cover are then detached from the top of the dryer feed hopper body. The detachment method of the frame body, the heat preservation cover and the dryer feed hopper body is simple and easy to operate, which makes it convenient to quickly remove the heat preservation cover and regularly clean and maintain the inside of the dryer feed hopper body at a later time. When the frame assembly and the heat preservation cover need to be installed again, the frame assembly is lifted so that the lower part of the telescopic vertical rod corresponds to the fixed sleeve one by one and slides vertically together, and the limit rods are pulled outward at the same time again, and the ends of the limit rods are retracted into the corresponding mounting holes by the way of the spring being stretched, so as to prevent the limit rods from interfering with the telescopic vertical rods sliding down vertically along the fixed sleeve. When the bottom of the telescopic vertical rod is When the ends slide down to the bottom end of the telescopic vertical rod and fit in contact with the corresponding bottom end of the fixing sleeve, it means that the limit rod and the limit hole are coaxially aligned again, then the handle is released, the spring will release the stretched state and drive the limit rods to insert into the corresponding limit holes, so as to complete the reinstallation and fixation of the frame assembly and the insulation cover on the top of the dryer feed hopper body again, and finally the bottom of the protective cover should be flattened downward, and the position height of the top of the insulation cover can be adjusted by adjusting and locking the telescopic vertical rod, so that the feeding port at the top of the insulation cover can be adjusted to a suitable material receiving position by adjusting the position height of the top of the insulation cover.It is convenient for the conveyed materials to be smoothly connected and conveyed to the dryer feed hopper body through the feed inlet.

[0018] The beneficial effects are as follows: 1. The utility model can detachably fix the frame assembly and the heat preservation cover on the top of the dryer feed hopper body by means of the vertical sliding cooperation between the lower part of the telescopic vertical rod and the fixed sleeve and the radial sliding cooperation between the limit rod and the limit hole, and allow the heat preservation cover to cover the periphery of the dryer feed hopper body. The fixed combination of the frame assembly, the heat preservation cover and the dryer feed hopper body is simple and easy to operate. Then, in the process of feeding gypsum material into the dryer feed hopper body, it is convenient to heat the incoming gypsum material from the outside by covering the heat preservation cover on the periphery of the top of the dryer feed hopper body, which is beneficial to prevent the gypsum material from dropping in temperature during the feeding process, and avoid the strength drop and crystal reduction of α-type semi-hydrated high-strength gypsum crystals;

[0019] 2. The telescopic upright pole can be vertically disengaged from the fixed sleeve by simply pulling the limit rod out of the limit hole, and the frame assembly and the heat preservation cover can be removed from the top of the dryer feed hopper body. The separation method of the frame body and the heat preservation cover from the dryer feed hopper body is simple and easy to operate, which makes it easy to quickly remove the heat preservation cover and regularly clean and maintain the inside of the dryer feed hopper body later;

[0020] 3. The height of the top of the insulation cover can be adjusted by adjusting and locking the telescopic vertical rod, so that the feeding port on the top of the insulation cover can be adjusted to a suitable material receiving position by adjusting the height of the top of the insulation cover, so that the conveyed materials can be smoothly connected to the feeding port and conveyed to the dryer feed hopper body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 It is an overall axonometric schematic diagram of the utility model;

[0023] Figure 2 This utility model Figure 1 Cross-section diagram of Figure 1 ;

[0024] Figure 3 This utility model Figure 1 Cross-section diagram of Figure 2 ;

[0025] Figure 4 This utility model Figure 3 A local enlarged view of point A;

[0026] Figure 5 This utility model Figure 1 Cross-section diagram of Figure 3 ;

[0027] Figure 6 This utility model Figure 5 A partial enlarged view of point B;

[0028] Figure 7 This utility model Figure 1 The front external view of

[0029] Figure 8 This utility model Figure 1 The left external view of

[0030] Fig. 9 This utility model Figure 1 A top view of the exterior;

[0031] Fig.10 This utility model Figure 1 External view from above.

[0032] The following are the descriptions of the reference numerals:

[0033] 1. Insulation cover; 101. Feed inlet; 2. Dryer feed hopper body; 201. Connecting flange; 202. Connecting hole; 203. Skirt plate; 3. Frame assembly; 301. Support top block; 302. Connecting sleeve; 303. Forming rod; 304. Base block; 305. Locking screw; 306. Telescopic vertical rod; 4. Disassembly and assembly assembly; 401. Fixing sleeve; 402. Handle; 403. Spring; 404. Mounting hole; 405. Limit hole; 406. Limit rod. DETAILED DESCRIPTION

[0034] 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.

[0035] See also Figure 1-Figure 10As shown, the utility model provides a dryer feed hopper heat preservation cover structure, including a dryer feed hopper body 2 and a heat preservation cover 1, the top of the dryer feed hopper body 2 is open, and a skirt plate 203 is horizontally extended and fixed to the top periphery of the dryer feed hopper body 2, and the four corners of the skirt plate 203 are all installed with disassembly components 4, specifically, the disassembly components 4 include a limiting hole 405 and a fixing sleeve 401, and the bottom of the telescopic vertical rod 306 is horizontally opened along its own radial direction. The limiting holes 405 are arranged in the longitudinal direction. The four corners of the top surface of the skirt plate 203 are vertically fixed with fixing sleeves 401. The fixing sleeves 401 correspond to the telescopic vertical rods 306 one by one and slide in cooperation in the vertical direction. The fixing sleeves 401 are horizontally provided with mounting holes 404 along their own radial direction. The mounting holes 404 are through holes and are arranged in the longitudinal direction. The mounting holes 404 at the front and rear positions are coaxially slidably matched with the limiting rods 406 in the longitudinal direction, and the limiting rods 406 at the front and rear positions are far away from each other. The ends are longitudinally slidably matched with the corresponding limiting holes 405, and the ends of the limiting rods 406 at the front and rear positions that are close to each other extend out of the periphery of the corresponding fixing sleeve 401 and are coaxially fixed with the handle 402, and the limiting rod 406 is located between the handle 402 and the periphery of the fixing sleeve 401. The coaxial gap of the limiting rod 406 is matched with a spring 403, and the two ends of the spring 403 are respectively fixedly connected to the handle 402 and the periphery of the fixing sleeve 401. Such an arrangement makes it easy to detachably fix the frame assembly 3 and the insulation cover 1 on the top of the dryer feed hopper body 2 by vertically sliding with the lower part of the telescopic vertical rod 306 and the fixing sleeve 401 and radially sliding with the limiting rod 406 and the limiting hole 405, and allow the insulation cover 1 to cover the periphery of the dryer feed hopper body 2. At the same time, the telescopic vertical rod 306 only needs to be pulled out of the limiting hole 405 to make the fixing sleeve 401 vertically disengaged from the telescopic vertical rod 306, and the frame assembly 3 and the insulation cover 1 can be removed from the top of the dryer feed hopper body 2 together.

[0036] The bottom of the insulation cover 1 is open and inverted above the top periphery of the dryer feed hopper body 2. The top of the insulation cover 1 is provided with an inlet 101 for receiving the input gypsum material. The inner periphery of the insulation cover 1 is installed with a frame assembly 3, and the disassembly assembly 4 is partially arranged at the lower part of the four corners of the frame assembly 3, and the lower part of the four corners of the frame assembly 3 is detachably connected to the disassembly assembly 4. Specifically, the frame assembly 3 includes a base block 304 and a telescopic vertical rod 306. The base blocks 304 are horizontally arranged at the four corners of the inner top surface of the insulation cover 1, and the top surfaces of the base blocks 304 are horizontally fixed with support top blocks 301, and the support top blocks 301 are respectively fixed at the four corners of the inner top surface of the insulation cover 1, so as to support and fix the top four corners of the insulation cover 1 through the support top blocks 301, and the base blocks 304 at the surrounding positions are arranged between the base blocks 304. The shaping rods 303 are horizontally fixed by connecting sleeves 302, and the bottom surfaces of the base blocks 304 at the surrounding positions are vertically fixed with telescopic vertical rods 306 by connecting sleeves 302, and the bottom ends of the telescopic vertical rods 306 are detachably connected to the corresponding disassembly and assembly components 4. Such an arrangement facilitates the stable shaping and propping up of the heat preservation cover 1 by the frame component 3, and at the same time, the position height of the top of the heat preservation cover 1 can be adjusted by vertical telescopic adjustment and locking of the telescopic vertical rods 306, thereby facilitating the adjustment of the material inlet 101 at the top of the heat preservation cover 1 to a suitable material receiving position by adjusting the position height of the top of the heat preservation cover 1.

[0037] As a preferred solution in this case, a connecting flange 201 is horizontally extended and fixed on the bottom periphery of the dryer feed hopper body 2, and a plurality of connecting holes 202 are vertically fixed around the connecting flange 201. This arrangement facilitates the dryer feed hopper body 2 to be fixedly installed at the feeding position of the dryer by adding bolts to the installation position through the connecting holes 202 of the connecting flange 201. The thermal insulation cover 1 is a cloth cover in the shape of a regular hexahedron. The inner periphery of the thermal insulation cover 1 is close to the corresponding edge of the outer periphery of the skirt plate 203 but does not touch it, and the bottom end of the thermal insulation cover 1 is lower than the top end of the dryer feed hopper body 2. This arrangement facilitates the thermal insulation cover 1 to have a good thermal insulation effect. At the same time, the bottom of the thermal insulation cover 1 can be pushed upward to expose the fixing sleeve 401 smoothly, and at the same time, the bottom end of the thermal insulation cover 1 can still completely cover the top periphery of the dryer feed hopper body 2 when the thermal insulation cover 1 is adjusted upward for a certain distance.

[0038] At the same time, the telescopic vertical rods 306 are all double-section pull-out telescopic rods with locking screws 305. This arrangement makes it easy for the telescopic vertical rods 306 to be telescopically adjusted by pulling and locked by tightening the locking screws 305. The telescopic vertical rods and the shaping rods 303 are both coaxially tightly matched with the corresponding connecting sleeves 302. This arrangement makes it easy for the telescopic vertical rods and the shaping rods 303 to be quickly and stably combined with the connecting sleeves 302.

[0039] In addition, the horizontal cross-sections of the fixing sleeve 401 and the telescopic vertical rod 306 are both circular. This arrangement facilitates a good positioning and guiding design for the telescopic vertical rod 306 and the fixing sleeve 401 when they are vertically slidably matched. The bottom ends of the telescopic vertical rods 306 are in close contact with the inner bottom ends of the corresponding fixing sleeves 401. This arrangement facilitates the process of the telescopic vertical rod 306 sliding vertically along the fixing sleeve 401. When the limit rod 406 is coaxially aligned with the limit hole 405, an obvious prompt can be given by the way that the bottom ends of the telescopic vertical rods 306 are in close contact with the inner bottom ends of the corresponding fixing sleeves 401.

[0040] With the above structure, specifically during the use of the heat preservation cover 1, at the beginning, the lower portion of the telescopic vertical rod 306 is vertically coaxially slidably matched with the fixed sleeve 401, and at the same time, the limiting rod 406 is radially slidably matched with the limiting hole 405 along the fixed sleeve 401. At this time, the frame assembly 3 and the heat preservation cover 1 can be detachably fixed to the top of the dryer feed hopper body 2 by means of the vertical sliding cooperation between the lower portion of the telescopic vertical rod 306 and the fixed sleeve 401 and the radial sliding cooperation between the limiting rod 406 and the limiting hole 405, and the heat preservation cover 1 is covered on the periphery of the dryer feed hopper body 2. The fixed combination of the frame assembly 3 and the heat preservation cover 1 and the dryer feed hopper body 2 is simple and easy to operate, and then in the process of feeding gypsum material into the dryer feed hopper body 2, it is convenient to pass the heat preservation cover 1. The cover is covered on the outer periphery of the top of the dryer feed hopper body 2 to insulate the incoming gypsum material from the outside, which is beneficial to prevent the temperature of the gypsum material from dropping during the feeding process, and avoids the strength reduction and crystal reduction of α-type semi-hydrated high-strength gypsum crystals. When the frame assembly 3 and the insulation cover 1 need to be removed later, the insulation cover 1 is pulled upward from the bottom to expose the fixed sleeve 401. Then, multiple people hold all the handles 402 at the same time to pull the limit rod 406 outward and make the inner ends of the limit rod 406 slip out of the corresponding limit hole 405 through the stretching of the spring 403. Then, by keeping the limit rod 406 pulled outward, the telescopic vertical rod 306 can be picked up and vertically lifted out of the fixed sleeve 401, and the frame assembly 3 and the insulation cover 1 are immediately detached from the dryer feed hopper body 2. The disassembly method of the top, frame body and heat preservation cover 1 and dryer feed hopper body 2 is simple and easy to operate, which makes it convenient to quickly remove the heat preservation cover 1 and regularly clean and maintain the inside of the dryer feed hopper body 2. When the frame assembly 3 and the heat preservation cover 1 need to be installed again, the frame assembly 3 is lifted to make the lower part of the telescopic vertical rod 306 correspond to the fixed sleeve 401 one by one and slide vertically, and the limiting rod 406 is pulled outward at the same time again, and the ends of the limiting rod 406 are stretched by the spring 403 to make the ends of the limiting rod 406 enter the corresponding mounting hole 404, so as to prevent the limiting rod 406 from interfering with the telescopic vertical rod 306 sliding down vertically along the fixed sleeve 401. When the bottom ends of the telescopic vertical rod 306 slide down to the bottom end of the telescopic vertical rod 306, they are in contact with the corresponding inner bottom end of the fixed sleeve 401. When they are in contact, it means that the limit rod 406 and the limit hole 405 are coaxially aligned again, then the handle 402 is released, the spring 403 will release the stretched state and drive the limit rod 406 to be inserted into the corresponding limit hole 405, so as to complete the reinstallation and fixation of the frame assembly 3 and the insulation cover 1 on the top of the dryer feed hopper body 2 again. Finally, the bottom of the protective cover should be smoothed down. Since the position height of the top of the insulation cover 1 can be adjusted by vertical telescopic adjustment and locking of the telescopic vertical rod 306, it is convenient to adjust the feed port 101 on the top of the insulation cover 1 to a suitable material receiving position by adjusting the position height of the top of the insulation cover 1, so that the conveyed material can be smoothly connected to the feed port 101 and conveyed to the dryer feed hopper body 2.

[0041] 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 heat preservation cover structure, comprising a dryer feed hopper body (2) and a heat preservation cover (1), characterized in that: The top of the dryer feed hopper body (2) is open, a skirt plate (203) is horizontally extended and fixed to the outer periphery of the top of the dryer feed hopper body (2), and disassembly and assembly components (4) are installed at the four corners of the skirt plate (203); The bottom of the heat-insulating cover (1) is open and is inverted above the top periphery of the dryer feed hopper body (2); the top of the heat-insulating cover (1) is provided with a feed inlet (101) for receiving gypsum material; A frame assembly (3) is installed on the inner periphery of the heat-insulating cover (1), and the disassembly assembly (4) is partially arranged at the lower part of the four corners of the frame assembly (3), and the lower part of the four corners of the frame assembly (3) is detachably connected to the disassembly assembly (4).

2. A dryer feed hopper heat preservation cover structure according to claim 1, characterized in that: A connecting flange (201) is horizontally extended and fixed to the periphery of the bottom of the dryer feed hopper body (2), and a plurality of connecting holes (202) are vertically fixed around the connecting flange (201).

3. A dryer feed hopper heat preservation cover structure according to claim 2, characterized in that: The heat-insulating cover (1) is a cloth cover in the shape of a regular hexahedron, the inner periphery of the heat-insulating cover (1) is close to the corresponding edge of the outer periphery of the skirt plate (203) but does not touch it, and the bottom end of the heat-insulating cover (1) is lower than the top end of the dryer feed hopper body (2).

4. A dryer feed hopper heat preservation cover structure according to claim 1, 2 or 3, characterized in that: The frame assembly (3) comprises a base block (304) and a telescopic vertical rod (306); the base blocks (304) are horizontally arranged at the four corners of the inner top surface of the heat-insulating cover (1); the top surfaces of the base blocks (304) are horizontally fixed with supporting top blocks (301); and the supporting top blocks (301) are respectively fixed at the four corners of the inner top surface of the heat-insulating cover (1) so as to support and fix the top four corners of the heat-insulating cover (1) through the supporting top blocks (301); the base blocks (304) at the four sides are horizontally fixed with shaping rods (303) through connecting sleeves (302); the bottom surfaces of the base blocks (304) at the four sides are vertically fixed with the telescopic vertical rods (306) through the connecting sleeves (302); and the bottom ends of the telescopic vertical rods (306) are detachably connected to the corresponding disassembly and assembly assemblies (4).

5. The heat preservation cover structure of the dryer feed hopper according to claim 4, characterized in that: The telescopic upright rods (306) are all double-section pull-out telescopic rods with locking screws (305).

6. A heat preservation cover structure for a dryer feed hopper according to claim 5, characterized in that: The telescopic vertical rod (306) and the shaping rod (303) are both coaxially tightly matched with the corresponding connecting sleeve (302).

7. A dryer feed hopper heat preservation cover structure according to claim 5 or 6, characterized in that: The disassembly and assembly components (4) each comprise a limiting hole (405) and a fixing sleeve (401); the bottom of the telescopic vertical rod (306) is provided with the limiting hole (405) horizontally along its own radial direction, and the limiting hole (405) is arranged along the longitudinal direction; the fixing sleeves (401) are vertically fixed at the four corners of the top surface of the skirt plate (203); the fixing sleeves (401) correspond to the telescopic vertical rod (306) one by one and are vertically slidably matched.

8. The heat preservation cover structure of the feed hopper of the dryer according to claim 7, characterized in that: The fixing sleeve (401) is provided with mounting holes (404) horizontally along its own radial direction. The mounting holes (404) are through holes and are arranged in the longitudinal direction. The mounting holes (404) at the front and rear positions are coaxially slidably matched with the limiting rods (406) in the longitudinal direction, and the ends of the limiting rods (406) at the front and rear positions that are far away from each other are longitudinally slidably matched with the corresponding limiting holes (405). The ends of the limiting rods (406) at the front and rear positions that are close to each other extend out of the periphery of the corresponding fixing sleeve (401) and are coaxially fixed with the handle (402). The limiting rod (406) is located in a coaxial gap between the handle (402) and the periphery of the fixing sleeve (401) and is matched with a spring (403), and the two ends of the spring (403) are respectively fixedly connected to the handle (402) and the periphery of the fixing sleeve (401).

9. A dryer feed hopper heat preservation cover structure according to claim 8, characterized in that: The horizontal cross-sectional shapes of the fixing sleeve (401) and the telescopic vertical rod (306) are both circular.

10. A dryer feed hopper heat preservation cover structure according to claim 8 or 9, characterized in that: The bottom ends of the telescopic upright rods (306) are in close contact with the inner bottom ends of the corresponding fixing sleeves (401).

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