Material returning spiral structure for gypsum powder circulation

Abstract

The utility model discloses a material returning spiral structure for gypsum powder circulation, relates to the field of gypsum powder recycling and processing, and aims to solve the problem that spiral blades of material returning spiral equipment are difficult to maintain and clean. The material returning spiral structure for gypsum powder circulation comprises a bottom shell, a material conveying and feeding shell, a top shell, a rotating shaft, a spiral blade, a material conveying and discharging shell and a material conveying shell. The material conveying and feeding shell is fixedly connected with the bottom shell, and a feeding opening is formed in the side wall of the side, close to the bottom shell, of the material conveying and feeding shell. The top shell is arranged on the side, facing the conveying and feeding shell, of the bottom shell. The rotating shaft is rotationally arranged between the bottom shell and the top shell; the spiral blade is spirally arranged on the rotating shaft along the axis of the rotating shaft; the material conveying shell is arranged between the material conveying feeding shell and the material conveying discharging shell, the material conveying discharging shell is cylindrical, the material conveying discharging shell is fixedly connected with the top shell, the material conveying shell is arranged between the material conveying feeding shell and the material conveying discharging shell, the material conveying shell comprises a first semicircular shell body and a second semicircular shell body, the first semicircular shell body and the second semicircular shell body are oppositely arranged, and the first semicircular shell body and the second semicircular shell body are detachably connected.

Description

Technical Field

[0001] The present application relates to the field of gypsum powder recycling and processing, and in particular to a material recycling spiral structure for gypsum powder circulation. Background Art

[0002] Gypsum recycling is mainly the process of collecting and reprocessing used or discarded gypsum materials. This recycling and re-production cycle can greatly reduce the cost of gypsum production and improve the utilization rate of gypsum.

[0003] Gypsum recycling requires crushing, grinding, calcination, etc. The crushed gypsum powder needs to be transported by conveying equipment. The conveying methods of the conveying equipment include belt conveying and spiral lifting. Among them, the spiral conveying method is widely used because it occupies less space, has less dust emission and high lifting height.

[0004] The return screw equipment includes a spiral blade and a barrel. The rotation of the spiral blade drives the gypsum powder to lift, and the barrel restricts the gypsum powder to prevent it from overflowing. However, during the transportation process, gypsum powder will adhere to the spiral blade. After long-term use, the gypsum powder on the spiral blade will condense and affect the transportation efficiency of the return screw equipment. However, due to the integrated design of the barrel, maintenance and cleaning are difficult. Utility Model Content

[0005] The present application provides a material return spiral structure for gypsum powder circulation, which is used to solve the problem of difficult maintenance and cleaning of spiral blades of the material return spiral equipment.

[0006] The present application provides a material return spiral structure for gypsum powder circulation, comprising a bottom shell, a feeding shell, a top shell, a rotating shaft, spiral blades, a feeding discharge shell and a feeding shell; the feeding feed shell is cylindrical, fixedly connected to the bottom shell, an end of the feeding feed shell away from the bottom shell is provided with an opening, and a side wall of the feeding feed shell close to the bottom shell is provided with a feeding port; the top shell is provided on the side of the bottom shell facing the feeding feed shell; the rotating shaft is rotatably provided between the bottom shell and the top shell, the rotating shaft is partially located in the feeding feed shell, and the rotating shaft is coaxially provided with the feeding feed shell; the spiral blades are spirally provided on the rotating shaft along the axis of the rotating shaft; the feeding discharge shell is cylindrical, fixedly connected to the top shell, and the feeding discharge shell is provided with a feeding port. The shell is arranged between the bottom shell and the top shell, an opening is arranged at one end of the feeding and discharging shell away from the top shell, and a discharge port is arranged on the side wall of the feeding and discharging shell close to the top shell; the feeding shell is arranged between the feeding feed shell and the feeding and discharging shell, the feeding shell is cylindrical and both ends of the feeding shell are through, and the two ends of the feeding shell are respectively connected to the two end faces of the feeding feed shell and the feeding and discharging shell, so that the feeding shell and the feeding feed shell are connected, and the feeding shell and the feeding and discharging shell are connected, and the feeding shell includes a first semicircular shell and a second semicircular shell, the first semicircular shell and the second semicircular shell are arranged opposite to each other, and the first semicircular shell and the second semicircular shell are detachably connected, so that the first semicircular shell and the second semicircular shell form a feeding shell.

[0007] The part outside the rotating shaft in the present application includes a material feeding shell, a material feeding discharge shell and a material feeding shell. The material feeding shell and the material feeding discharge shell cover the spiral blades on the rotating shaft and can be cleaned through the feed port and the discharge port. The spiral blades outside this area can be cleaned by disassembling the first semicircular shell or the second semicircular shell, so that the spiral blades can be cleaned without moving the rotating shaft and the bottom shell and the top shell, which is convenient for cleaning and maintenance.

[0008] In some embodiments of the present application, the material conveying shell also includes two first connecting plates and two second connecting plates, the two first connecting plates are arranged on the two side walls of the first semicircular shell facing the second semicircular shell, and the two second connecting plates are arranged on the two side walls of the second semicircular shell facing the first semicircular shell, and the plate surface of the first connecting plate is in contact with the plate surface of the second connecting plate; the material conveying shell also includes a first connecting member, which fixedly connects the first connecting plate and the second connecting plate.

[0009] By connecting the first semicircular shell and the second semicircular shell through two first connecting plates, two second connecting plates and the first connecting piece, the conveying shell structure can be stabilized and the gypsum powder can be more stable during transportation; on the other hand, the connection through the first connecting piece can realize the disassembly of the first semicircular shell and the second semicircular shell by removing the first connecting piece, which is convenient for disassembly and maintenance.

[0010] In some embodiments of the present application, a plurality of first connecting members are provided, and the plurality of first connecting members are spaced apart. The plurality of first connecting members can increase the connection strength between the first connecting plate and the corresponding second connecting plate, and improve the stability of the material conveying shell.

[0011] In some embodiments of the present application, the first semicircular shell includes a plurality of sub-shells, the plurality of sub-shells are distributed along the axial direction of the rotating shaft, and two adjacent sub-shells are connected so that the plurality of sub-shells form the first semicircular shell.

[0012] In some embodiments of the present application, the first connecting plate includes a plurality of sub-connecting plates, the plurality of sub-connecting plates correspond to the plurality of sub-shells one by one, and the sub-connecting plates are arranged on the side wall of the sub-shell facing the second semicircular shell. In this case, only one sub-connecting plate can be removed, so as to clean the part of the spiral blade, which is more convenient to clean.

[0013] In some embodiments of the present application, the first semicircular shell also includes a first arc-shaped connecting plate and a second connecting member, the first arc-shaped connecting plate is provided in plurality, the plurality of first arc-shaped connecting plates are provided on two end faces of each sub-shell, the first arc-shaped connecting plates between two adjacent sub-shells are fitted together, and the second connecting member is provided on the two first arc-shaped connecting plates fitted together and fixedly connects the two first arc-shaped connecting plates.

[0014] The second connecting member and the first arc-shaped connecting plate can fixedly connect the multiple sub-shells, thereby ensuring the stability of the first semicircular shell and further ensuring the stable transportation of the gypsum powder.

[0015] In some embodiments of the present application, there are multiple second connectors on each of two mutually fitting first arc-shaped connecting plates, and the multiple second connectors are spaced apart around the axis of the rotating shaft. The multiple second connectors can improve the connection stability between two adjacent sub-shells.

[0016] In some embodiments of the present application, the return spiral structure for gypsum powder circulation also includes two circular connecting plates, two second arc-shaped connecting plates and a plurality of third connecting members; the two circular connecting plates are respectively arranged on the end faces of the material feeding shell and the material discharging shell, and the two second arc-shaped connecting plates are arranged on the two end faces of the second semicircular shell; the two second arc-shaped connecting plates are respectively fitted with the two circular connecting plates, and the two first arc-shaped connecting plates located at the two side ends of the first semicircular shell are respectively fitted with the two circular connecting plates; a plurality of third connecting members are respectively arranged on the circular connecting plates, for connecting the circular connecting plates and the corresponding first arc-shaped connecting plates and second arc-shaped connecting plates.

[0017] This method can ensure a stable connection between the conveying shell and the conveying feed shell and the conveying discharge shell. While ensuring stable gypsum powder transportation, the corresponding third connecting piece can be removed as needed to remove the first semicircular shell or the second semicircular shell, thereby facilitating maintenance of the spiral blades.

[0018] In some embodiments of the present application, the spiral structure for recycling gypsum powder further includes a sealing gasket, which is arranged at the connection between the first semicircular shell and the second semicircular shell. The sealing gasket can prevent the lime powder from overflowing from the gap and protect the production environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.

[0020] Figure 1 A schematic diagram of a return spiral structure for gypsum powder circulation provided in an embodiment of the present application.

[0021] Figure 2 A schematic diagram of a feed shell in a return spiral structure for gypsum powder circulation provided in an embodiment of the present application.

[0022] Figure markings: 1-bottom shell; 2-feeding feed shell; 21-feeding port; 22-circular connecting plate; 3-top shell; 4-feeding discharge shell; 41-discharging port; 5-rotating shaft; 51-spiral blade; 6-feeding shell; 61-first semicircular shell; 611-sub-shell; 612-first arc-shaped connecting plate; 613-second connecting piece; 62-second semicircular shell; 621-second arc-shaped connecting plate; 63-first connecting plate; 631-sub-connecting plate; 64-second connecting plate; 65-first connecting piece; 7-third connecting piece. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, when describing a pipeline, the "connected" and "connection" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0027] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0028] Gypsum recycling is mainly the process of collecting and reprocessing used or discarded gypsum materials. This recycling and re-production cycle can greatly reduce the cost of gypsum production and improve the utilization rate of gypsum.

[0029] Gypsum recycling requires crushing, grinding, calcination, etc. The crushed gypsum powder needs to be transported by conveying equipment. The conveying methods of the conveying equipment include belt conveying and spiral lifting. Among them, the spiral conveying method is widely used because it occupies less space, has less dust emission and high lifting height.

[0030] The return screw equipment includes a spiral blade and a barrel. The rotation of the spiral blade drives the gypsum powder to lift, and the barrel restricts the gypsum powder to prevent it from overflowing. However, during the transportation process, gypsum powder will adhere to the spiral blade. After long-term use, the gypsum powder on the spiral blade will condense and affect the transportation efficiency of the return screw equipment. However, due to the integrated design of the barrel, maintenance and cleaning are difficult.

[0031] To do this, please refer to Figure 1 The present application provides a material return spiral structure for gypsum powder circulation, including a bottom shell 1, a material feeding shell 2, a top shell 3, a rotating shaft 5, spiral blades 51, a material feeding shell 4 and a material feeding shell 6.

[0032] Please refer to Figure 1The feed shell 2 is cylindrical, and is fixedly connected to the bottom shell 1. An opening is provided at one end of the feed shell 2 away from the bottom shell 1, and a feed port 21 is provided on a side wall of the feed shell 2 close to the bottom shell 1. The bottom shell 1 may be a square plate or a circular plate, and its material may be metal. The feed shell 2 may be fixedly connected to the bottom shell 1, such as by welding or integral molding. The feed port 21 may be a conventional feed port 21, and the opening may be formed by not providing a baffle on one end surface of the cylindrical feed shell 2.

[0033] Please refer to Figure 1 At this time, the axis of the feeding shell 2 can be perpendicular to a plane of the bottom shell 1. When the spiral structure needs to lift materials, the bottom shell 1 and the feeding shell 2 can be plates located at the bottom, and the feed port 21 can be the feed port 21 of the gypsum powder, and the opening can be the conveying direction of the gypsum powder.

[0034] Please refer to Figure 1 The top shell 3 is arranged on the side of the bottom shell 1 facing the feeding shell 2. The top shell 3 can be spaced apart from the bottom shell 1, and the top shell 3 can be the same as the bottom shell 1 or different from the bottom shell 1; the top shell 3 can be a cover plate at the gypsum powder output.

[0035] Please refer to Figure 1 The rotating shaft 5 is rotatably arranged between the bottom shell 1 and the top shell 3, the rotating shaft part 5 is located in the feeding shell 2, and the rotating shaft 5 is coaxially arranged with the feeding shell 2. The rotating shaft 5 can be a metal shaft, and the rotating shaft 5 is rotatably connected with the bottom shell 1 and the top shell 3, which can be directly rotated or rotatably connected through a bearing or a slewing support structure; the rotating shaft 5 can be a solid shaft or a hollow shaft.

[0036] Please refer to Figure 1 The rotating shaft 5 can pass through the bottom shell 1 or the top shell 3, or can pass through both the bottom shell 1 and the top shell 3. At the same time, a rotating power structure, such as a rotating motor, a hydraulic motor, etc., can be set at the end of the rotating shaft 5 passing through the bottom shell 1. The rotating power structure can be directly connected to the rotating shaft 5 through a coupling, or can be connected by belt drive, chain drive, etc.

[0037] Please refer to Figure 1 The spiral blade 51 is spirally arranged on the rotating shaft 5 along the axis of the rotating shaft 5. The tip of the spiral blade 51 can abut against the clinker feeding shell, the feeding and discharging shell 4 and the feeding shell 6, etc. The inclination direction of the spiral blade 51 can form a certain angle with the axis of the rotating shaft 5, such as between 15° and 45°.

[0038] Please refer to Figure 1The material discharging shell 4 is cylindrical, fixedly connected to the top shell 3, and arranged between the bottom shell 1 and the top shell 3. An opening is arranged at one end of the material discharging shell 4 away from the top shell 3, and a discharge port 41 is arranged on a side wall of the material discharging shell 4 close to the top shell 3. The material discharging shell 4 can be the same shape and material as the material feeding shell 2, or just similar. The material discharging shell 4 can be fixedly connected to the top shell 3, and the connection method can be welding, or integral molding or threaded connection.

[0039] Please refer to Figure 1 The feed shell 6 is disposed between the feed feed shell 2 and the feed discharge shell 4. The feed shell 6 is cylindrical and has two ends that are connected. The two ends of the feed shell 6 are respectively connected to the two end surfaces of the feed feed shell 2 and the feed discharge shell 4, so that the feed shell 6 is connected to the feed feed shell 2, and the feed shell 6 is connected to the feed discharge shell 4. The feed shell 6 can be the outer shell of the main part of the spiral blade 51, which can be in contact with the spiral blade 51 or a certain gap can be set, such as a gap of 2mm to 5mm.

[0040] Please refer to Figure 1 The feed shell 6 can be connected to the two end faces of the feed shell 2 and the feed shell 4 through a detachable structure to facilitate disassembly and maintenance; the feed shell 6 can be made of metal, such as steel, or aluminum alloy; the axis of the feed shell 6 coincides with the axis of the feed shell 2 and the feed shell 4, and the diameter of the feed shell 6 can be equal to the diameter of the feed shell 2 and the feed shell 4, and the diameter and thickness of the feed shell 2 and the feed shell 4 can also be equal.

[0041] Please refer to Figure 1 The material conveying shell 6 includes a first semicircular shell 61 and a second semicircular shell 62, which are arranged opposite to each other and are detachably connected to form the material conveying shell 6. The material conveying shell 6 can be cut along one diameter and axis direction to form the first semicircular shell 61 and the second semicircular shell 62, and the first semicircular shell 61 and the second semicircular shell 62 can be the same.

[0042] The part outside the rotating shaft 5 in the present application includes a material feeding shell 2, a material feeding discharge shell 4 and a material feeding shell 6. The material feeding shell 2 and the material feeding discharge shell 4 cover the spiral blades 51 on the rotating shaft 5 and can be cleaned through the feed port 21 and the discharge port 41. The spiral blades 51 outside this area can be cleaned by disassembling the first semicircular shell 61 or the second semicircular shell 62, so that the spiral blades 51 can be cleaned without moving the rotating shaft 5 and the bottom shell 1 and the top shell 3, which is convenient for cleaning and maintenance.

[0043] Please refer to Figure 2 In some examples, the feed shell 6 also includes two first connecting plates 63 and two second connecting plates 64. The two first connecting plates 63 are arranged on the two side walls of the first semicircular shell 61 facing the second semicircular shell 62, and the two second connecting plates 64 are arranged on the two side walls of the second semicircular shell 62 facing the first semicircular shell 61. The plate surface of the first connecting plate 63 is in contact with the plate surface of the second connecting plate 64; the feed shell 6 also includes a first connecting member 65, which fixedly connects the first connecting plate 63 and the second connecting plate 64.

[0044] Please refer to Figure 2 , illustratively, the first connecting plate 63 can be formed by bending the edge of the first semicircular shell 61, and the second connecting plate 64 can be formed by bending the edge of the second semicircular shell 62;

[0045] Please refer to Figure 2 The first connecting plate 63 can be the same as the second connecting plate 64, and its cross-section can be a square surface, a semicircular surface, or an arc surface, wherein the surface of the first connecting plate 63 facing the second connecting plate 64 can be a plane, and the surface of the second connecting plate 64 facing the first connecting plate 63 can also be a plane.

[0046] Please refer to Figure 2 At the same time, in order to make the first connecting member 65 fixedly connect the first connecting plate 63 and the second connecting plate 64, and at the same time facilitate the disassembly of the connecting member, the first connecting member 65 can be a bolt and nut, or a stud nut, or a plug-in connection structure or a snap-on connection structure, all of which can achieve the effect of detachable connection.

[0047] Please refer to Figure 2 The first semicircular shell 61 and the second semicircular shell 62 are connected by two first connecting plates 63, two second connecting plates 64 and a first connecting piece 65, so that the structure of the feed shell 6 can be stabilized, and the gypsum powder can be more stable during transportation; on the other hand, the first semicircular shell 61 and the second semicircular shell 62 can be disassembled by removing the first connecting piece 65, which is convenient for disassembly and maintenance.

[0048] Please refer to Figure 2 In some examples, a plurality of first connecting members 65 are provided, and the plurality of first connecting members 65 are spaced apart. The plurality of first connecting members 65 can increase the connection strength between the first connecting plate 63 and the corresponding second connecting plate 64, and make the material conveying shell 6 more stable.

[0049] In some examples, the number of first connectors 65 may correspond to the length of the first connecting plate 63 , that is, the interval between two adjacent first connectors 65 may be between 5 cm and 20 cm, and the number of first connectors 65 is designed according to the length of the first connecting plate 63 and the interval.

[0050] At the same time, two first connecting plates 63 are provided, so a first connecting member 65 can be provided on each first connecting plate 63 at the above-mentioned interval to ensure that the first connecting plate 63 and the second connecting plate 64 are stably connected, that is, the first semicircular shell 61 and the second semicircular shell 62 are stably connected.

[0051] Please refer to Figure 1 In some examples, the first semicircular shell 61 includes a plurality of sub-shells 611 , which are distributed along the axial direction of the rotating shaft 5 , and two adjacent sub-shells 611 are connected so that the plurality of sub-shells 611 form the first semicircular shell 61 .

[0052] Exemplarily, the plurality of sub-housings 611 may be completely identical or partially identical. Completely identical may be understood as two sub-housings 611 having the same length along the axial direction of the rotating shaft 5 .

[0053] Please refer to Figure 1 In some examples, since the length of the return spiral structure is set according to needs, the number of sub-shells 611 can also be designed according to needs, and the number can be 3 to 12. The more sub-shells 611 there are, the higher the connection strength required between two adjacent sub-shells 611 to ensure the stability of the structure of the first semicircular shell 61 composed of multiple sub-shells 611.

[0054] Please refer to Figure 2 In some examples, the first connecting plate 63 includes a plurality of sub-connecting plates 631, and the plurality of sub-connecting plates 631 correspond to the plurality of sub-housings 611 one by one, and the sub-connecting plates 631 are arranged on the side wall of the sub-housing 611 facing the second semicircular housing 62. At this time, only one sub-connecting plate 631 can be removed, so as to clean the part of the spiral blade 51, and the cleaning is more convenient.

[0055] Please refer to Figure 2 Exemplarily, the sub-connecting plate 631 can cut the first connecting plate 63 into multiple sections, and correspondingly set the section of the first connecting plate 63 on each sub-shell 611 to form the sub-connecting plate 631, or the sub-connecting plate 631 can be formed by bending the edge of the sub-connecting plate 631, and the first connecting plate 63 is formed by multiple sub-connecting plates 631.

[0056] Please refer to Figure 2At this time, a gap can be set between two adjacent sub-connection plates 631, or they can be set in contact with each other, both of which can meet the usage requirements.

[0057] Please refer to Figure 1 In some examples, the first semicircular shell 61 also includes a first arc-shaped connecting plate 612 and a second connecting member 613. The first arc-shaped connecting plate 612 is provided in plurality. The plurality of first arc-shaped connecting plates 612 are provided on two end surfaces of each sub-shell 611. The first arc-shaped connecting plates 612 between two adjacent sub-shells 611 are fitted together. The second connecting member 613 is provided on the two first arc-shaped connecting plates 612 fitted together and fixedly connects the two first arc-shaped connecting plates 612.

[0058] Please refer to Figure 1 For example, the extension direction of the first arc-shaped connecting plate 612 is perpendicular to the axial direction of the rotating shaft 5, the inner diameter of the first arc-shaped connecting plate 612 can be equal to the outer diameter of the feed shell 6, and the outer diameter of the first arc-shaped connecting plate 612 can be larger than the outer diameter of the feed shell 6, so that the first arc-shaped connecting plate 612 is distributed on the first semicircular shell 61 in the form of steps.

[0059] Please refer to Figure 1 In some examples, the second connecting member 613 can be a bolt and nut, or a stud nut, or a plug-in connection structure or a snap-on connection structure, all of which can achieve a detachable connection effect.

[0060] The second connecting member 613 and the first arc-shaped connecting plate 612 can fix the plurality of sub-shells 611 together, thereby ensuring the stability of the first semicircular shell 61 and further ensuring the stability of the gypsum powder transportation.

[0061] Please refer to Figure 1 In some examples, the second connecting members 613 on each of the two mutually fitting first arc-shaped connecting plates 612 are provided in plurality, and the plurality of second connecting members 613 are distributed at intervals around the axis of the rotating shaft 5. The plurality of second connecting members 613 can improve the connection stability between two adjacent sub-housings 611.

[0062] Please refer to Figure 2 In some examples, the number of the second connecting members 613 on each two mutually fitted first arc-shaped connecting plates 612 can be set to 3 or 4, both of which can meet the usage requirements.

[0063] At the same time, in order to make the sealing between the two sub-shells 611 better and avoid the powder from spilling and forming dust when conveying gypsum powder, a sealing film can be set on the end face of the sub-shell 611 to improve its sealing performance. The sealing film can be made of plastic film or rubber.

[0064] Please refer to Figure 1In some examples, the return spiral structure for gypsum powder circulation also includes two circular connecting plates 22, two second arc-shaped connecting plates 621 and a plurality of third connecting members 7; the two circular connecting plates 22 are respectively arranged on the end faces of the feeding feed shell 2 and the feeding discharge shell 4, and the two second arc-shaped connecting plates 621 are arranged on the two end faces of the second semicircular shell 62; the two second arc-shaped connecting plates 621 are respectively fitted with the two circular connecting plates 22, and the two first arc-shaped connecting plates 612 located at the two side ends of the first semicircular shell 61 are respectively fitted with the two circular connecting plates 22; a plurality of third connecting members 7 are respectively arranged on the circular connecting plates 22, for connecting the circular connecting plates 22 and the corresponding first arc-shaped connecting plates 612 and second arc-shaped connecting plates 621.

[0065] Please refer to Figure 1 This method can ensure a stable connection between the feed shell 6 and the feed inlet shell 2 and the feed outlet shell 4. While ensuring stable gypsum powder transportation, the corresponding third connecting piece 7 can be removed as needed to remove the first semicircular shell 61 or the second semicircular shell 62, thereby facilitating maintenance of the spiral blade 51.

[0066] Please refer to Figure 1 In some examples, the circular connecting plate 22 can be similar in shape to the first arc-shaped connecting plate 612, that is, the circular connecting plate 22 is formed by extending the first arc-shaped connecting plate 612 along the axis and connecting end to end. The circular connecting plate 22 is arranged on the end surfaces of the material feeding shell 2 and the material discharging shell 4, and can achieve the effect of fixed connection and detachable connection between the material feeding shell 2 and the material discharging shell 4 and the material shell 6.

[0067] Please refer to Figure 1 In some examples, the third connecting member 7 can be a bolt and nut, or a stud nut, or a plug-in connection structure or a snap-on connection structure, all of which can achieve a detachable connection effect.

[0068] In some examples, the spiral structure for recycling gypsum powder further includes a sealing gasket, which is disposed at the connection between the first semicircular shell 61 and the second semicircular shell 62. The sealing gasket can prevent the lime powder from overflowing from the gap and protect the production environment.

[0069] In some examples, the sealing gasket may be snapped onto the connection between the first semicircular shell 61 and the second semicircular shell 62 during installation, or may be fixedly connected to one of them.

[0070] In some examples, the sealing gasket may be made of rubber, asbestos, graphite, metal (such as copper, aluminum, etc.), polytetrafluoroethylene (PTFE), etc.

[0071] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0072] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A material return spiral structure for gypsum powder circulation, characterized in that: include: Bottom shell; The feeding shell is cylindrical and fixedly connected to the bottom shell. An opening is provided at one end of the feeding shell away from the bottom shell, and a feeding port is provided on a side wall of the feeding shell close to the bottom shell. A top shell, arranged on a side of the bottom shell facing the material feeding shell; A rotating shaft is rotatably disposed between the bottom shell and the top shell, the rotating shaft portion is located in the material feeding shell, and the rotating shaft is coaxially disposed with the material feeding shell; A spiral blade is spirally arranged on the rotating shaft along the axis of the rotating shaft; The material feeding and discharging shell is cylindrical, the material feeding and discharging shell is fixedly connected to the top shell, and the material feeding and discharging shell is arranged between the bottom shell and the top shell, an opening is arranged at one end of the material feeding and discharging shell away from the top shell, and a discharging port is arranged on a side wall of the material feeding and discharging shell close to the top shell; A material conveying shell is arranged between the material conveying feed shell and the material conveying discharge shell, the material conveying shell is cylindrical and has two ends connected, and the two ends of the material conveying shell are respectively connected to the two end surfaces of the material conveying feed shell and the material conveying discharge shell, so that the material conveying shell and the material conveying feed shell are connected, and the material conveying shell and the material conveying discharge shell are connected; The material conveying shell includes a first semicircular shell and a second semicircular shell, wherein the first semicircular shell and the second semicircular shell are arranged opposite to each other, and the first semicircular shell and the second semicircular shell are detachably connected to form the material conveying shell.

2. The spiral structure for recycling gypsum powder according to claim 1, characterized in that: The material conveying shell further comprises two first connecting plates and two second connecting plates, wherein the two first connecting plates are arranged on two side walls of the first semicircular shell facing the second semicircular shell, and the two second connecting plates are arranged on two side walls of the second semicircular shell facing the first semicircular shell, and the plate surface of the first connecting plate is in contact with the plate surface of the second connecting plate; The material conveying shell further includes a first connecting member, and the first connecting member is fixedly connected to the first connecting plate and the second connecting plate.

3. The spiral structure for recycling gypsum powder according to claim 2, characterized in that: The first connecting members are provided in plurality, and the plurality of first connecting members are distributed at intervals.

4. The spiral structure for recycling gypsum powder according to claim 2, characterized in that: The first semicircular shell includes a plurality of sub-shells, and the plurality of sub-shells are distributed along the axial direction of the rotating shaft, and two adjacent sub-shells are connected so that the plurality of sub-shells form the first semicircular shell.

5. The spiral structure for recycling gypsum powder according to claim 4, characterized in that: The first connecting plate includes a plurality of sub-connecting plates, the plurality of sub-connecting plates correspond to the plurality of sub-shells one by one, and the sub-connecting plates are arranged on the side walls of the sub-shells facing the second semicircular shell.

6. The spiral structure for recycling gypsum powder according to claim 4, characterized in that: The first semicircular shell also includes a first arc-shaped connecting plate and a second connecting member. The first arc-shaped connecting plate is provided in plurality, and the plurality of first arc-shaped connecting plates are provided on the two end faces of each of the sub-shells. The first arc-shaped connecting plates between two adjacent sub-shells are fitted together. The second connecting member is provided on the two first arc-shaped connecting plates fitted together and fixedly connects the two first arc-shaped connecting plates.

7. The spiral structure for recycling gypsum powder according to claim 6, characterized in that: There are a plurality of second connecting members on every two mutually fitted first arc-shaped connecting plates, and the plurality of second connecting members are distributed at intervals around the axis of the rotating shaft.

8. The spiral structure for recycling gypsum powder according to claim 6, characterized in that: The material return spiral structure for gypsum powder circulation also includes two circular connecting plates, two second arc-shaped connecting plates and a plurality of third connecting pieces; The two circular connecting plates are respectively arranged on the end surfaces of the material feeding shell and the material discharging shell, and the two second arc-shaped connecting plates are arranged on the two end surfaces of the second semicircular shell; The two second arc-shaped connecting plates are respectively fitted with the two circular connecting plates, and the two first arc-shaped connecting plates located at the two side ends of the first semicircular shell are respectively fitted with the two circular connecting plates; The plurality of third connecting members are respectively arranged on the circular connecting plate, and are used to connect the circular connecting plate and the corresponding first arc-shaped connecting plate and second arc-shaped connecting plate.

9. The spiral structure for recycling gypsum powder according to claim 1, characterized in that: The material return spiral structure for gypsum powder circulation also includes a sealing gasket, which is arranged at the connection between the first semicircular shell and the second semicircular shell.

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