Conveying device

Abstract

The utility model provides a conveying device which comprises a shell, a conveying belt, a conveying belt and a conveying belt. The feeding structure is arranged at the first end of the shell; the discharging structure is arranged at the second end of the shell; the conveying screw is arranged in the inner cavity, the conveying screw comprises a rotating shaft and a screw blade, and the rotating shaft extends in the axial direction of the shell; the driving part is connected with the first end of the rotating shaft and drives the rotating shaft to rotate; the first bearing is arranged between the shell and the second end of the rotating shaft; the sealing structure is arranged in the inner cavity and divides the inner cavity into a first cavity and a second cavity which are mutually isolated, the first cavity is arranged close to the first end of the shell relative to the second cavity, the discharging structure and the feeding structure are both communicated with the first cavity, the first bearing is located in the second cavity, and the second end of the rotating shaft penetrates through the sealing structure to be matched with the first bearing. According to the technical scheme, the problem that conveyed materials are prone to being polluted in the prior art can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a conveying device. Background Art

[0002] Feed screw is a device used to convey materials such as particles and powders. It is usually composed of a shell, a rotating shaft and spiral blades arranged in the shell. Feed screw conveys materials from one place to another through rotational motion. It is often used in material conveying, mixing, processing and other links in industrial production processes. Its advantages include simple structure, stable operation, high conveying efficiency, etc. It is widely used in chemical, food processing, metallurgy, construction and other industries.

[0003] In the field of power batteries, the feed screw can be used to transport lithium carbonate. However, since a bearing is usually required between the rotating shaft and the housing to allow the rotating shaft to rotate stably, the bearing will wear during the rotation of the rotating shaft, which will cause metal foreign matter to be generated in the bearing and mixed into the lithium carbonate, making the lithium carbonate impure. Therefore, the problem of easy contamination of the transported materials exists in the relevant field. Utility Model Content

[0004] The main purpose of the utility model is to provide a conveying device to solve the problem in the related art that the conveyed materials are easily contaminated.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a conveying device, including: a shell having an inner cavity; a feeding structure, arranged at the first end of the shell; a discharging structure, arranged at the second end of the shell; a conveying screw, arranged in the inner cavity, the conveying screw including a rotating shaft and spiral blades, and the rotating shaft extends along the axial direction of the shell; a driving part, connected to the first end of the rotating shaft and driving the rotating shaft to rotate; a first bearing, arranged between the shell and the second end of the rotating shaft; a sealing structure, arranged in the inner cavity and dividing the inner cavity into a first cavity and a second cavity isolated from each other, the first cavity is arranged relative to the second cavity close to the first end of the shell, the discharging structure and the feeding structure are both connected to the first cavity, the first bearing is located in the second cavity, and the second end of the rotating shaft passes through the sealing structure and cooperates with the first bearing.

[0006] Furthermore, the sealing structure includes a partition body and a seal, the partition body is provided with a mounting through hole, the rotating shaft is inserted into the mounting through hole, the partition body is connected to the shell, and the seal is provided between the partition body and the rotating shaft to isolate the first cavity and the second cavity.

[0007] Furthermore, the partition body includes a body ring plate and an inner enclosure plate, the inner enclosure plate is connected to the inner side of the body ring plate, a mounting through hole is formed on the inner side of the inner enclosure plate, and a seal is arranged between the inner enclosure plate and the rotating shaft.

[0008] Furthermore, the sealing structure also includes an outer plate, which is connected to the outer side of the main ring plate, and the inner plate and the outer plate extend in a direction away from the first end of the shell, and a collecting chamber is formed between the main ring plate, the outer plate, the inner plate and the shell.

[0009] Furthermore, the conveying device also includes a material baffle plate, which is located on one side of the main ring plate close to the first end of the shell; and / or the sealing structure also includes a cover plate, which is arranged on the outer periphery of the rotating shaft, the main ring plate protrudes inward from the inner surrounding plate, and an installation groove for installing the seal is formed between the cover plate, the main ring plate and the inner surrounding plate, and the cover plate is connected to the inner surrounding plate through fasteners; and / or the shell includes a shell body and an end cover, the shell body is a cylindrical structure, the end cover is detachably arranged on the shell body, and the outer plate is abutted against the end cover.

[0010] Furthermore, the spiral blade includes a blade body and a convex piece, the blade body and the shell are spaced apart, and the convex piece is located between the blade body and the shell and connected to the blade body.

[0011] Further, in the direction from the first end to the second end of the shell, the pitch of the spiral blade gradually increases.

[0012] Further, the minimum pitch of the spiral blade is between 100 mm and 110 mm; and / or the maximum pitch of the spiral blade is between 210 mm and 230 mm.

[0013] Furthermore, the rotating shaft extends out of the first end of the shell, and the conveying device also includes a second bearing and a third bearing located outside the shell and arranged on the rotating shaft. The second bearing is arranged away from the shell relative to the third bearing, and the second bearing is a self-aligning bearing.

[0014] Further, the sealing element comprises a plurality of sealing layers stacked and arranged along the axial direction of the rotating shaft; and / or the sealing element is made of glass fiber.

[0015] By applying the technical solution of the utility model, the shell provides an installation basis for other structures of the conveying device, the shell has an inner cavity, the feeding structure and the discharging structure are respectively arranged at the two ends of the shell, the conveying screw is arranged in the inner cavity and can convey the material from the feeding structure to the discharging structure, specifically, the conveying screw includes a rotating shaft and a spiral blade, the rotating shaft extends along the axial direction of the shell, the driving part is connected to the first end of the rotating shaft and drives the rotating shaft to rotate, thereby realizing the conveying function of the conveying screw for the material, the second end of the rotating shaft passes through the sealing structure and cooperates with the first bearing, so that the two ends of the rotating shaft can be supported so that the rotating shaft is more stable when rotating, in addition, the sealing structure divides the inner cavity into a first cavity and a second cavity isolated from each other, the first cavity is arranged relative to the second cavity near the first end of the shell, the discharging structure and the feeding structure are both connected to the first cavity, so that the material is conveyed in the first cavity, the first bearing is located in the second cavity, so that the metal foreign matter generated by the wear of the first bearing during use will exist in the second cavity, and will not enter the first cavity, thereby preventing the metal foreign matter from mixing into the material, so that the material will not be contaminated by the metal foreign matter. Therefore, the technical solution of the present application can effectively solve the problem in the related art that the transported materials are easily contaminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A cross-sectional schematic diagram of an embodiment of a conveying device according to the utility model is shown;

[0018] Figure 2 Shows Figure 1 An enlarged schematic diagram of part A of the conveying device;

[0019] Figure 3 Shows Figure 1 A schematic cross-sectional view of a conveying spiral of a conveying device.

[0020] The above drawings include the following reference numerals:

[0021] d1, the minimum pitch of the spiral blade; d2, the maximum pitch of the spiral blade;

[0022] 10. Shell; 11. Inner cavity; 12. Shell body; 13. End cover;

[0023] 20. Feeding structure;

[0024] 30. Discharging structure;

[0025] 40. conveying screw; 41. rotating shaft; 42. spiral blade; 421. blade body; 422. convex piece;

[0026] 50. Driving unit;

[0027] 60. First bearing;

[0028] 70. Sealing structure; 71. Separating body; 711. Main body ring plate; 712. Inner plate; 713. Outer plate; 72. Sealing member; 721. Sealing layer; 73. Collecting chamber; 74. Cover plate; 75. Mounting groove; 76. Fastener;

[0029] 80. Baffle plate;

[0030] 91. Second bearing; 92. Third bearing. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0034] like Figure 1 as well as Figure 2 As shown, the present application provides a conveying device, and an embodiment of the conveying device of the present application includes: a housing 10, a feeding structure 20, a discharging structure 30, a conveying screw 40, a conveying screw 40, a driving part 50, a first bearing 60, and a sealing structure 70; the housing 10 has an inner cavity 11; the feeding structure 20 is arranged at a first end of the housing 10; the discharging structure 30 is arranged at a second end of the housing 10; the conveying screw 40 is arranged in the inner cavity 11, and the conveying screw 40 includes a rotating shaft 41 and a spiral blade 42, and the rotating shaft 41 is along the axis of the housing 10 The driving part 50 is connected to the first end of the rotating shaft 41 and drives the rotating shaft 41 to rotate; the first bearing 60 is arranged between the shell 10 and the second end of the rotating shaft 41; the sealing structure 70 is arranged in the inner cavity 11 and divides the inner cavity 11 into a first cavity and a second cavity isolated from each other, the first cavity is arranged near the first end of the shell 10 relative to the second cavity, the discharging structure 30 and the feeding structure 20 are both connected to the first cavity, the first bearing 60 is located in the second cavity, and the second end of the rotating shaft 41 passes through the sealing structure 70 and cooperates with the first bearing 60.

[0035] By applying the technical solution of this embodiment, the housing 10 provides an installation foundation for other structures of the conveying device. The housing 10 has an inner cavity 11. The feeding structure 20 and the discharging structure 30 are respectively arranged at two ends of the housing 10. The conveying screw 40 is arranged in the inner cavity 11 and can convey the material from the feeding structure 20 to the discharging structure 30. Specifically, the conveying screw 40 includes a rotating shaft 41 and a spiral blade 42. The rotating shaft 41 extends along the axial direction of the housing 10. The driving part 50 is connected to the first end of the rotating shaft 41 and drives the rotating shaft 41 to rotate, thereby realizing the conveying function of the conveying screw 40 for conveying materials. The second end of the rotating shaft 41 passes through the sealing structure 70. Cooperating with the first bearing 60, the two ends of the rotating shaft 41 can be supported so that the rotating shaft 41 is more stable when rotating. In addition, the sealing structure 70 separates the inner cavity 11 into a first cavity and a second cavity isolated from each other. The first cavity is arranged near the first end of the shell 10 relative to the second cavity. The discharging structure 30 and the feeding structure 20 are both connected to the first cavity, so that the material is transported in the first cavity. The first bearing 60 is located in the second cavity, so that the metal foreign matter generated by the wear of the first bearing 60 during use will exist in the second cavity, and will not move to the first cavity, thereby preventing the metal foreign matter from mixing into the material, so that the material will not be contaminated by the metal foreign matter. Therefore, the technical solution of this embodiment can effectively solve the problem that the transported material is easily contaminated in the related art.

[0036] It should be noted that "the rotating shaft 41 extends along the axial direction of the shell 10" means that the axis of the rotating shaft 41 can be parallel to the axis of the shell 10, and the axis of the rotating shaft 41 can be set at an angle with the axis of the shell 10, and the angle is between 1° and 5°. In this embodiment, the shell 10 extends in the transverse direction, and the material being transported is lithium carbonate.

[0037] like Figure 1 as well as Figure 2 As shown, the sealing structure 70 includes a partition body 71 and a sealing member 72. The partition body 71 is provided with a mounting through hole, the rotating shaft 41 is inserted into the mounting through hole, the partition body 71 is connected to the housing 10, and the sealing member 72 is provided between the partition body 71 and the rotating shaft 41 to isolate the first cavity and the second cavity. Specifically, the sealing member 72 can ensure the mutual isolation of the first cavity and the second cavity, thereby further preventing the metal foreign matter generated by the wear of the first bearing 60 during use from moving into the first cavity and contaminating the conveyed material.

[0038] like Figure 1 as well as Figure 2As shown, the partition body 71 includes a body ring plate 711 and an inner plate 712, the inner plate 712 is connected to the inner side of the body ring plate 711, the inner side of the inner plate 712 forms a mounting through hole, and the seal 72 is arranged between the inner plate 712 and the rotating shaft 41. Specifically, the inner plate 712 provides a mounting base for the seal 72, and the seal 72 seals between the inner plate 712 and the rotating shaft 41 to achieve mutual isolation between the first cavity and the second cavity. It should be noted that "the inner plate 712 is connected to the inner side of the body ring plate 711" refers to the inner plate 712 being arranged close to the inner side of the body ring plate 711, that is, the inner plate 712 can be connected to the inner end face of the body ring plate 711, or it can be connected to a position close to the inner end face of the body ring plate 711 (that is, the body ring plate 711 protrudes inward from the inner plate 712).

[0039] In this embodiment, the sealing structure 70 further includes a cover plate 74, which is arranged on the outer periphery of the rotating shaft 41, and the main body ring plate 711 protrudes inward from the inner enclosure plate 712. A mounting groove 75 for mounting the sealing member 72 is formed between the cover plate 74, the main body ring plate 711 and the inner enclosure plate 712, and the cover plate 74 is connected to the inner enclosure plate 712 via a fastener 76. Specifically, after the sealing member 72 is installed in the mounting groove 75, the cover plate 74 is connected to the inner enclosure plate 712, so that the main body ring plate 711, the inner enclosure plate 712, the cover plate 74 and the rotating shaft 41 limit the sealing member 72 from different directions, so that the sealing member 72 will not shift, and further, the sealing member 72 can continuously ensure the mutual isolation between the first cavity and the second cavity.

[0040] Further, the seal 72 includes a plurality of sealing layers 721 stacked in the axial direction of the rotating shaft 41 and the seal 72 is made of glass fiber. Specifically, the plurality of sealing layers 721 can ensure the sealing effect of the seal 72; the seal 72 made of glass fiber is used in engineering applications such as sealing, filling and insulation in high temperature environments, and the seal 72 made of glass fiber has high temperature resistance, which can maintain good physical properties in high temperature environments and is not easy to deform or melt; the seal 72 made of glass fiber has corrosion resistance, which is suitable for various chemical media and corrosive gas environments; the seal 72 made of glass fiber has excellent sealing performance, which can effectively fill the gap between the inner panel 712 and the rotating shaft 41; the seal 72 made of glass fiber has wear resistance, which can maintain a good sealing effect for a long time; the seal 72 made of glass fiber has a long service life, is not easy to age or deteriorate, and can reduce the frequency of its replacement and maintenance.

[0041] like Figure 1 as well as Figure 2As shown, the sealing structure 70 further includes an outer plate 713, which is connected to the outer side of the main body ring plate 711, and the inner plate 712 and the outer plate 713 extend in a direction away from the first end of the housing 10, and a collecting chamber 73 is formed between the main body ring plate 711, the outer plate 713, the inner plate 712 and the housing 10. Specifically, foreign metal matter generated by the wear of the first bearing 60 during use will move into the collecting chamber 73, so that it is convenient for the staff to clean the foreign metal matter in the collecting chamber 73 when maintaining the conveying device.

[0042] like Figure 1 as well as Figure 2 As shown, the shell 10 includes a shell body 12 and an end cover 13. The shell body 12 is a cylindrical structure. The end cover 13 is detachably arranged on the shell body 12, and the peripheral plate 713 is abutted against the end cover 13. Specifically, the end cover 13 is detachably arranged, so that the staff can remove the end cover 13 to expose the collection chamber 73, thereby facilitating the staff to clean the metal foreign matter.

[0043] like Figure 1 as well as Figure 2 As shown, the conveying device further includes a material blocking plate 80, which is located on one side of the main body ring plate 711 close to the first end of the housing 10. Specifically, the material blocking plate 80 can block the conveyed material, thereby preventing the material from moving from the first cavity to the second cavity.

[0044] like Figure 3 As shown, the spiral blade 42 includes a blade body 421 and a protrusion 422, the blade body 421 is spaced apart from the housing 10, and the protrusion 422 is located between the blade body 421 and the housing 10 and connected to the blade body 421. Specifically, in the present embodiment, the material to be transported is lithium carbonate, which contains a certain amount of water, so that during the transportation of lithium carbonate, part of the lithium carbonate will adhere to the inner wall surface of the housing 10 and continue to accumulate, thereby affecting the normal operation of the conveying device, and the setting of the protrusion 422 enables the blade body 421 to rotate when the protrusion 422 is rotated, so that the protrusion 422 can contact the accumulated lithium carbonate, so that this part of the lithium carbonate can be scraped off by the protrusion 422, thereby ensuring the normal operation of the conveying device. In the present embodiment, there are multiple protrusions 422, and the multiple protrusions 422 are spaced apart along the circumferential direction of the blade body 421.

[0045] like Figure 1As shown, in the direction from the first end of the shell 10 to the second end of the shell 10, the pitch of the spiral blade 42 gradually increases. Specifically, since the spiral blades 42 are all connected to the rotating shaft 41, the rotation speeds of the various parts of the spiral blade 42 are the same. In this embodiment, the diameters of the various parts of the spiral blade 42 are also the same, so that during the material conveying process, the smaller the pitch of the spiral blade 42, the smaller the efficiency and conveying capacity of the material conveying, and the larger the pitch of the spiral blade 42, the greater the efficiency and conveying capacity of the material conveying, so that when the material is located at the spiral blade 42 with a smaller pitch (that is, close to the first end of the shell 10), the material conveying speed is slower and the feeding is more stable. The material is pushed from the smaller pitch to the larger pitch. The material is conveyed by the spiral blade 42 with a larger pitch, which can relatively increase the material conveying speed, avoid material accumulation at the discharge structure 30, reduce the possibility of material walling, and reduce the risk of poor operation of the spiral blade 42.

[0046] In addition, the minimum pitch d1 of the spiral blade 42 is between 100 mm and 110 mm, and the maximum pitch d2 of the spiral blade 42 is between 210 mm and 230 mm. Specifically, the spiral blade 42 that meets the above requirements can not only effectively push the material but also control the speed of pushing the material; the minimum pitch d1 of the spiral blade 42 can be 100 mm, 102 mm, 104 mm, 105 mm, 107 mm or 110 mm; the maximum pitch d2 of the spiral blade 42 can be 210 mm, 213 mm, 218 mm, 220 mm, 227 mm or 230 mm; it should be noted that the "minimum pitch" and "maximum pitch" are generated because the pitch of the spiral blade 42 gradually increases in the direction from the first end of the shell 10 to the second end of the shell 10.

[0047] like Figure 1 As shown, the rotating shaft 41 extends out of the first end of the housing 10, and the conveying device further includes a second bearing 91 and a third bearing 92 located outside the housing 10 and arranged on the rotating shaft 41, the second bearing 91 is arranged away from the housing 10 relative to the third bearing 92, and the second bearing 91 is a self-aligning bearing. Specifically, the arrangement of the second bearing 91 and the third bearing 92 can make the rotation of the rotating shaft 41 more stable, and the second bearing 91 is a self-aligning bearing, so that the second bearing 91 can adjust the axis of the rotating shaft 41.

[0048] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0049] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0050] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0051] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A conveying device, characterized in that: include: A housing (10) having an inner cavity (11); A feeding structure (20) is arranged at the first end of the housing (10); A discharge structure (30) is arranged at the second end of the housing (10); A conveying screw (40) is arranged in the inner cavity (11), the conveying screw (40) comprises a rotating shaft (41) and a spiral blade (42), and the rotating shaft (41) extends along the axial direction of the housing (10); A driving unit (50) connected to the first end of the rotating shaft (41) and driving the rotating shaft (41) to rotate; A first bearing (60) is disposed between the housing (10) and the second end of the rotating shaft (41); A sealing structure (70) is arranged in the inner cavity (11) and divides the inner cavity (11) into a first cavity and a second cavity which are isolated from each other, wherein the first cavity is arranged near the first end of the shell (10) relative to the second cavity, the discharge structure (30) and the feed structure (20) are both connected to the first cavity, the first bearing (60) is located in the second cavity, and the second end of the rotating shaft (41) passes through the sealing structure (70) and cooperates with the first bearing (60).

2. The conveying device according to claim 1, characterized in that The sealing structure (70) comprises a partition body (71) and a sealing member (72); the partition body (71) is provided with a mounting through hole, the rotating shaft (41) is inserted into the mounting through hole, the partition body (71) is connected to the housing (10), and the sealing member (72) is provided between the partition body (71) and the rotating shaft (41) to isolate the first cavity and the second cavity.

3. The conveying device according to claim 2, characterized in that: The partition body (71) includes a body ring plate (711) and an inner enclosure plate (712), wherein the inner enclosure plate (712) is connected to the inner side of the body ring plate (711), the inner side of the inner enclosure plate (712) forms the mounting through hole, and the seal (72) is arranged between the inner enclosure plate (712) and the rotating shaft (41).

4. The conveying device according to claim 3, characterized in that: The sealing structure (70) further includes an outer plate (713), wherein the outer plate (713) is connected to the outer side of the main body ring plate (711), the inner plate (712) and the outer plate (713) extend in a direction away from the first end of the shell (10), and a collecting chamber (73) is formed between the main body ring plate (711), the outer plate (713), the inner plate (712) and the shell (10).

5. The conveying device according to claim 4, characterized in that: The conveying device further comprises a material blocking plate (80), wherein the material blocking plate (80) is located on one side of the main body ring plate (711) close to the first end of the shell (10); and / or, The sealing structure (70) further comprises a cover plate (74), the cover plate (74) being arranged on the outer periphery of the rotating shaft (41), the main body ring plate (711) protruding inwardly from the inner enclosure plate (712), a mounting groove (75) for mounting the sealing member (72) being formed between the cover plate (74), the main body ring plate (711) and the inner enclosure plate (712), and the cover plate (74) being connected to the inner enclosure plate (712) via a fastener (76); and / or, The shell (10) comprises a shell body (12) and an end cover (13); the shell body (12) is a cylindrical structure; the end cover (13) is detachably arranged on the shell body (12); and the outer plate (713) is abutted against the end cover (13).

6. The conveying device according to any one of claims 1 to 5, characterized in that The spiral blade (42) comprises a blade body (421) and a convex piece (422); the blade body (421) and the shell (10) are spaced apart; the convex piece (422) is located between the blade body (421) and the shell (10) and is connected to the blade body (421).

7. The conveying device according to any one of claims 1 to 5, characterized in that In the direction from the first end of the shell (10) to the second end of the shell (10), the pitch of the spiral blade (42) gradually increases.

8. The conveying device according to claim 7, characterized in that The minimum pitch (d1) of the spiral blade (42) is between 100 mm and 110 mm; and / or, The maximum pitch (d2) of the spiral blade (42) is between 210 mm and 230 mm.

9. The conveying device according to any one of claims 1 to 5, characterized in that The rotating shaft (41) extends out of the first end of the housing (10), and the conveying device further comprises a second bearing (91) and a third bearing (92) located outside the housing (10) and arranged on the rotating shaft (41), wherein the second bearing (91) is arranged away from the housing (10) relative to the third bearing (92), and the second bearing (91) is a self-aligning bearing.

10. The conveying device according to any one of claims 2 to 5, characterized in that The sealing member (72) comprises a plurality of sealing layers (721) stacked and arranged along the axial direction of the rotating shaft (41); and / or, The seal (72) is made of glass fiber.

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