screw conveyor

Abstract

The utility model relates to a kind of screw conveyors.The screw conveyor includes conveying pipe, sealing plate structure, graphite copper sleeve, screw rod and driving assembly, above-mentioned screw conveyor only through sealing plate structure and graphite copper sleeve can realize the rotary connection between screw rod and conveying pipe, structure is simpler, and only graphite copper sleeve and screw rod exist sliding friction relationship, so sealing plate structure is not easy to damage, only graphite copper sleeve is vulnerable to wear and tear, needs replacement maintenance.Moreover, only sealing plate structure and conveying pipe exist detachably connected relationship, so when needing to disassemble and repair the feed inlet end of screw conveyor, only need to carry out dismounting work to sealing plate structure, so even if the operation space around feed end is relatively narrow, graphite copper sleeve can be disassembled and assembled faster, so that the replacement maintenance work of graphite copper sleeve is more convenient, fast, effectively improve the maintenance convenience of screw conveyor.

Description

Technical Field

[0001] This utility model relates to the field of material conveying technology, and in particular to a screw conveyor. Background Technology

[0002] In material conveying equipment, screw conveyors are used for conveying various powdery, granular, and flocculent materials. In traditional screw conveyors, the screw is usually connected to the conveying pipe via bearings mounted on bearing housings. To ensure accurate material entry into the screw conveyor, the feed inlet is often located below the hopper or similar equipment. This results in a confined operating space at the feed inlet. During operation, maintenance is inevitably required due to bearing wear, end plate wear, etc. Operators must disassemble and reassemble the end plates, bearings, and bearing housings within the limited space below the hopper, making the process inconvenient and significantly increasing the difficulty of maintaining the screw conveyor. Utility Model Content

[0003] Given the aforementioned problems of inconvenient disassembly, assembly, and maintenance, it is necessary to provide a screw conveyor that is easy to disassemble, assemble, and maintain.

[0004] A screw conveyor, comprising:

[0005] The conveying pipe has a feed end and a discharge end; the sidewalls of the feed end and the discharge end are respectively formed with a feed port and a discharge port;

[0006] A sealing plate structure is detachably installed at the feed end to seal the opening of the feed end; the sealing plate structure has an installation groove formed on the side facing the inside of the conveying pipe;

[0007] A graphite copper sleeve is fixed inside the mounting groove;

[0008] A helical rod is housed within the conveying pipe; one end of the helical rod is rotatably inserted into the graphite copper sleeve and is slidable relative to the inner wall of the graphite copper sleeve.

[0009] A drive assembly is installed at the discharge end and closes the outlet of the discharge end; the output shaft of the drive assembly is connected to the end of the screw rod away from the sealing plate structure.

[0010] In one embodiment, the conveying pipe includes a pipe body open at both ends, a first mounting plate extending circumferentially along the pipe body and disposed at one end of the pipe body, and a second mounting plate extending circumferentially along the pipe body and disposed at the other end of the pipe body; the inlet is provided on the side wall of the pipe body near the first mounting plate; the outlet is provided on the side wall of the pipe body near the second mounting plate; the sealing plate structure and the driving assembly are detachably connected to the first mounting plate and the second mounting plate, respectively.

[0011] In one embodiment, it further includes a plurality of first connectors and a plurality of second connectors; the first mounting plate is provided with a plurality of first connecting holes spaced apart circumferentially; the second mounting plate is provided with a plurality of second connecting holes spaced apart circumferentially; the sealing plate structure is provided with a plurality of first mounting holes spaced apart circumferentially; and the end of the drive assembly near the tube body is provided with a plurality of second mounting holes spaced apart circumferentially.

[0012] One end of each of the first connectors is respectively inserted through one of the first mounting holes, and the other end is respectively inserted through one of the first mounting holes, so as to detachably connect the sealing plate structure and the first mounting plate; one end of each of the second connectors is respectively inserted through one of the second connecting holes, and the other end is respectively inserted through one of the second mounting holes, so as to detachably connect the drive assembly and the second mounting plate.

[0013] In one embodiment, both the first mounting plate and the second mounting plate are annular plate structures; the first mounting plate has a first limiting groove circumferentially formed on the inner edge of its hole facing the tube body; the second mounting plate has a second limiting groove circumferentially formed on the inner edge of its hole facing the tube body; one end of the tube body with the feed inlet extends into the first limiting groove and is fixedly connected to the first mounting plate; one end of the tube body with the discharge outlet extends into the second limiting groove and is fixedly connected to the second mounting plate.

[0014] In one embodiment, the sealing plate structure includes a plate body detachably mounted to the feed end and a rotating mounting tube disposed on the side of the plate body facing the inside of the conveying pipe; the inner wall of the rotating mounting tube and the surface of the plate body facing the conveying pipe form the mounting groove.

[0015] In one embodiment, a limiting shoulder is provided circumferentially at one end of the screw rod located at the discharge end; the end face of the limiting shoulder away from the discharge end slides in contact with the end face of the graphite copper sleeve facing the discharge end.

[0016] In one embodiment, the helical rod includes a tubular rod body with openings at both ends, helical blades disposed on the rod body and extending helically around the rod body, and a mounting post; the mounting post has a limiting shoulder disposed circumferentially in the middle part; one end of the mounting post passes through the opening at one end of the rod body and is connected to the inner wall of the rod body, and the other end is rotatably inserted into the graphite copper sleeve.

[0017] In one embodiment, a lubrication gap is formed between the end face of the spiral rod located in the mounting groove and the bottom surface of the mounting groove; an oil hole communicating with the lubrication gap is provided on the sealing plate structure; and an oil seal is detachably installed in the oil hole.

[0018] In one embodiment, the conveying pipe is inclined, and the height of the feed end is lower than the height of the discharge end; the side wall of the feed end is formed with a discharge port for connecting to the discharge pipe, and the discharge port and the discharge port are located on the same side, both located on the side of the conveying pipe away from the feed port.

[0019] In one embodiment, a discharge pipe is fixed at the discharge port; the end of the discharge pipe away from the conveying pipe is used for detachable connection to the discharge pipeline.

[0020] Compared to traditional screw conveyors that use bearing housings, bearings, and end caps to achieve the rotational connection between the screw and the conveying pipe, the aforementioned screw conveyor achieves this connection solely through an end cap structure and a graphite copper sleeve. This simplifies the structure, and since only the graphite copper sleeve and the screw have sliding friction, the end cap structure is less prone to damage. Only the graphite copper sleeve is a wear-prone component requiring replacement and maintenance. Furthermore, the connection between the end cap structure and the conveying pipe is detachable. Therefore, when disassembling and repairing the screw conveyor's inlet end, only the end cap structure needs to be disassembled and reassembled. Even in confined spaces around the inlet end, the graphite copper sleeve can be disassembled and reassembled more quickly, making replacement and maintenance of the graphite copper sleeve more convenient and efficient, effectively improving the maintenance ease of the screw conveyor. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the screw conveyor in a preferred embodiment of the present invention;

[0022] Figure 2 for Figure 1 A partially enlarged view of the screw conveyor shown;

[0023] Figure 3 for Figure 1 The diagram shows the structural schematic of the sealing plate structure in the screw conveyor.

[0024] Figure 4 for Figure 1 The diagram shows the structure of the first mounting plate in the screw conveyor.

[0025] Figure 5 for Figure 1 The diagram shows the structure of the second mounting plate in the screw conveyor.

[0026] The reference numerals in the attached figures are as follows: 100, Screw conveyor; 110, Conveying pipe; 111, Feed end; 112, Discharge end; 113, Feed port; 114, Discharge port; 115, Pipe body; 116, First mounting plate; 1161, First limiting groove; 117, Second mounting plate; 1171, Second limiting groove; 118, Discharge port; 119, Discharge connecting pipe; 120, Sealing plate structure; 121, Mounting groove; 122, Plate body; 123, Rotating mounting pipe; 124, Oil hole; 130, Graphite copper sleeve; 140, Screw rod; 141, Limiting shoulder; 142, Rod body; 143, Screw blade; 144, Mounting column; 150, Drive assembly; 160, Lubrication gap; 170, Oil seal. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements. It is also understood that when an element is referred to as being "between" two elements, it may be the only one between the two elements, or there may be one or more intermediate elements.

[0030] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0031] Appendix Figure 1 The diagram illustrates the structure of a screw conveyor according to one embodiment of the present invention. For ease of explanation, the accompanying drawings only show structures relevant to embodiments of the present invention.

[0032] Please see Figure 1 and Figure 2 The screw conveyor 100 in the preferred embodiment of this utility model includes a conveying pipe 110, a sealing plate structure 120, a graphite copper sleeve 130, a screw rod 140, and a drive assembly 150.

[0033] The conveying pipe 110 has a feed end 111 and a discharge end 112. The sidewalls of the feed end 111 and the discharge end 112 are respectively formed with a feed port 113 and a discharge port 114.

[0034] Please refer to the following: Figure 3 The sealing plate structure 120 is detachably installed on the feed end 111 to close the opening of the feed end 111. The sealing plate structure 120 has a mounting groove 121 formed on the side facing the inside of the conveying pipe 110.

[0035] The graphite copper sleeve 130 is fixed within the mounting groove 121. The screw rod 140 is housed within the conveying pipe 110. One end of the screw rod 140 is rotatably inserted into the graphite copper sleeve 130 and can slide relative to the inner wall of the graphite copper sleeve 130. The graphite copper sleeve 130 ensures smooth rotation of the screw rod 140.

[0036] The drive assembly 150 is installed at the discharge end 112 and closes the opening of the discharge end 112. The output shaft of the drive assembly 150 is connected to the end of the screw rod 140 away from the sealing plate structure 120. The drive assembly 150 is used to drive the screw rod 140 to rotate, so as to transport the material in the conveying pipe 110 from the inlet 113 to the outlet 114, thereby realizing automatic material conveying.

[0037] Compared to the traditional screw conveyor 100, which uses a bearing housing, bearing, and end plate to achieve the rotational connection between the screw rod 140 and the conveying pipe 110, the screw conveyor 100 described above only uses an end plate structure 120 and a graphite copper sleeve 130 to achieve the rotational connection between the screw rod 140 and the conveying pipe 110. Not only is the structure simpler, but also only the graphite copper sleeve 130 and the screw rod 140 have a sliding friction relationship. Therefore, the end plate structure 120 is not easily damaged, and only the graphite copper sleeve 130 is a wear-prone part that needs to be replaced and maintained.

[0038] Moreover, since there is a detachable connection between the sealing plate structure 120 and the conveying pipe 110, when it is necessary to disassemble and repair the feed port 113 end of the screw conveyor 100, only the sealing plate structure 120 needs to be disassembled and reassembled. Therefore, even if the operating space around the feed end 111 is relatively small, the disassembly and reassembly of the graphite copper sleeve 130 can be completed more quickly, making the replacement and maintenance of the graphite copper sleeve 130 more convenient and faster, and effectively improving the maintenance convenience of the screw conveyor 100.

[0039] In some embodiments, the conveying pipe 110 includes a pipe body 115 open at both ends, a first mounting plate 116 extending circumferentially along the pipe body 115 and disposed at one end of the pipe body 115, and a second mounting plate 117 extending circumferentially along the pipe body 115 and disposed at the other end of the pipe body 115. A feed inlet 113 is provided on the side wall of the pipe body 115 near the end of the first mounting plate 116. A discharge outlet 114 is provided on the side wall of the pipe body 115 near the end of the second mounting plate 117. The sealing plate structure 120 and the drive assembly 150 are detachably connected to the first mounting plate 116 and the second mounting plate 117, respectively.

[0040] The first mounting plate 116 and the second mounting plate 117 can be either an annular structure arranged circumferentially along the tube body 115 or an arc-shaped structure extending circumferentially along the tube body 115. The sealing plate structure 120 and the drive assembly 150 can be detachably connected to the first mounting plate 116 and the second mounting plate 117 respectively through bolt connections, locking structure connections, or other methods. Therefore, the arrangement of the first mounting plate 116 and the second mounting plate 117 can improve the ease of disassembly and assembly of the sealing plate structure 120 and the drive assembly 150, thereby further improving the ease of replacement and maintenance of the graphite copper sleeve 130.

[0041] Furthermore, in some embodiments, the screw conveyor 100 further includes a plurality of first connectors (not shown) and a plurality of second connectors (not shown). A first mounting plate 116 has a plurality of first connecting holes (not shown) spaced apart circumferentially. A second mounting plate 117 has a plurality of second connecting holes (not shown) spaced apart circumferentially. A sealing plate structure 120 has a plurality of first mounting holes spaced apart circumferentially. A drive assembly 150 has a plurality of second mounting holes spaced apart circumferentially at one end near the tube body 115.

[0042] One end of each of the plurality of first connectors is respectively inserted through a plurality of first mounting holes, and the other end is respectively inserted through a plurality of first mounting holes, so as to detachably connect the sealing plate structure 120 and the first mounting plate 116. One end of each of the plurality of second connectors is respectively inserted through a plurality of second connection holes, and the other end is respectively inserted through a plurality of second mounting holes, so as to detachably connect the drive assembly 150 and the second mounting plate 117.

[0043] The first and second connectors can be threaded connectors such as bolts, bolt and nut assemblies, and stud and nut assemblies. During assembly and maintenance, only the first and second connectors need to be turned to install and remove the sealing plate structure 120 and the drive assembly 150 on the delivery pipe 110, which further improves the convenience of replacing and maintaining the graphite copper sleeve 130.

[0044] Please refer to the following: Figure 4 and Figure 5 Furthermore, in some embodiments, both the first mounting plate 116 and the second mounting plate 117 are annular plate structures. The first mounting plate 116 has a first limiting groove 1161 circumferentially formed on the inner edge of its bore facing the tube body 115. The second mounting plate 117 has a second limiting groove 1171 circumferentially formed on the inner edge of its bore facing the tube body 115. One end of the tube body 115 with the inlet 113 extends into the first limiting groove 1161 and is fixedly connected to the first mounting plate 116. One end of the tube body 115 with the outlet 114 extends into the second limiting groove 1171 and is fixedly connected to the second mounting plate 117.

[0045] Please refer to it again. Figure 2 and Figure 3 In some embodiments, the sealing plate structure 120 includes a plate body 122 detachably mounted to the feed end 111 and a rotating mounting tube 123 disposed on the side of the plate body 122 facing the inside of the conveying pipe 110. The inner wall of the rotating mounting tube 123 and the surface of the plate body 122 facing the conveying pipe 110 form a mounting groove 121. Specifically, the rotating mounting tube 123 is welded to the plate body 122. Thus, during the processing of the sealing plate structure 120, only the rotating mounting tube 123 needs to be welded to the plate body 122, simplifying the process and reducing material waste and processing costs. Moreover, a tight seal between the plate body 122 and the end face of the feed end 111 can be ensured without extensive processing, effectively reducing the amount of processing and contributing to lower labor costs.

[0046] Specifically, when the conveying pipe 110 includes a pipe body 115, a first mounting plate 116 and a second mounting plate 117, the plate body 122 has a plate surface on one side of the rotating mounting pipe 123 that is in contact with the end face of the first mounting plate 116 and / or the pipe body 115 at the feed end 111.

[0047] In some embodiments, a limiting shoulder 141 is provided circumferentially at one end of the screw rod 140 located at the discharge end 112. The end face of the limiting shoulder 141 facing away from the discharge end 112 is in sliding contact with the end face of the graphite copper sleeve 130 facing the discharge end 112.

[0048] Furthermore, in some embodiments, the helical rod 140 includes a tubular rod 142 with openings at both ends, helical blades 143 disposed on the rod 142 and extending helically around the rod 142, and a mounting post 144. A limiting shoulder 141 is provided circumferentially at the middle of the mounting post 144. One end of the mounting post 144 passes through the opening at one end of the rod 142 and is drivenly connected to the inner wall of the rod 142, while the other end is rotatably inserted into the graphite copper sleeve 130.

[0049] It should be noted that the end of the rod 142 away from the mounting post 144 can be directly connected to the output shaft of the drive assembly 150, or it can be connected to the output shaft of the drive assembly 150 through a specific connecting shaft fixed to the end of the rod 142 away from the mounting post 144. The specific connecting shaft is designed according to the structure of the rod 142, the output shaft of the drive assembly 150, and the transmission connection method. For example, when the transmission connection is a keyed connection, a keyway or key can be set on the specific connecting shaft, etc.

[0050] The screw rod 140 is configured as a hollow tubular rod body 142, helical blades 143, and mounting post 144 to reduce its weight, thus contributing to the lightweight design of the screw conveyor 100. Simultaneously, one end of the mounting post 144 is rotatably inserted into the graphite copper sleeve 130 to achieve a rotatable connection between the screw rod 140 and the graphite copper sleeve 130. Therefore, both the mounting post 144 and the graphite copper sleeve 130 are easily worn parts. By configuring the screw rod 140 as a rod body 142, helical blades 143, and mounting post 144, even if the mounting post 144 wears out, only a new mounting post 144 needs to be replaced on the rod body 142, eliminating the need to replace the entire screw rod 140 and effectively extending its service life.

[0051] Furthermore, in some embodiments, a lubrication gap 160 is formed between the end face of the screw rod 140 located within the mounting groove 121 and the bottom surface of the mounting groove 121. An oil hole 124 communicating with the lubrication gap 160 is provided on the sealing plate structure 120. An oil seal 170 is detachably installed within the oil hole 124. The oil hole 124 is used to inject lubricating oil or grease into the lubrication gap 160 to lubricate the contact area between the graphite copper sleeve 130 and the screw rod 140, thereby reducing the probability of wear between the graphite copper sleeve 130 and the screw rod 140, contributing to the extension of the service life of the screw conveyor 100, and reducing the frequency of replacement and maintenance of the graphite copper sleeve 130. The oil seal 170 is used to seal the oil hole 124, facilitating the injection of lubricating oil or grease into the lubrication gap 160 while preventing leakage of lubricating oil or grease within the lubrication gap 160.

[0052] In some embodiments, the conveying pipe 110 is inclined, and the height of the feed end 111 is lower than the height of the discharge end 112. A discharge port 118 is formed on the sidewall of the feed end 111 for connecting to a discharge pipe. The discharge port 118 and the discharge port 114 are located on the same side, both on the side of the conveying pipe 110 opposite to the feed port 113. When the screw conveyor 100100 is in use, the feed port 113 is located above the conveying pipe 110, and both the discharge port 118 and the discharge port 114 are located below the conveying pipe 110.

[0053] After the screw conveyor 100 finishes feeding, there may be some un-conveyed material at the feed end 111 of the conveying pipe 110. This material can be discharged and collected through the discharge port 118 to ensure the cleanliness of the conveying pipe 110 and reduce the probability of material jamming or stagnation during subsequent use. Before the screw conveyor 100 finishes feeding, the material in the conveying pipe 110 can be prevented from flowing out of the discharge port 118 by closing the control valve in the discharge pipe.

[0054] Specifically, in the axial direction of the conveying pipe 110, the distance between the inlet 113 and the outlet 114 is less than the distance between the discharge port 118 and the outlet 114, so that the discharge port 118 is located at a lower position in the conveying pipe 110, so as to discharge the material remaining in the conveying pipe 110 as much as possible.

[0055] Furthermore, in some embodiments, a discharge pipe 119 is fixed at the discharge port 118. The end of the discharge pipe 119 away from the conveying pipe 110 is used for detachable connection to the discharge pipeline. Specifically, the discharge pipe is fixed to the discharge port 118 by welding. The discharge pipe 119 allows for a detachable connection between the discharge pipeline and the discharge port 118, facilitating the use of different discharge pipelines by the screw conveyor 100 according to different site conditions, thus improving the applicability of the screw conveyor 100.

[0056] Specifically, the outer wall of the discharge pipe 119 at the end away from the discharge port 118 is provided with external threads and annular anti-slip ridges to facilitate a stable and reliable connection between the discharge pipe and the discharge pipeline.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A screw conveyor, characterized in that, include: The conveying pipe has a feed end and a discharge end; the sidewalls of the feed end and the discharge end are respectively formed with a feed port and a discharge port; A sealing plate structure is detachably installed at the feed end to seal the opening of the feed end; the sealing plate structure has an installation groove formed on the side facing the inside of the conveying pipe; A graphite copper sleeve is fixed inside the mounting groove; A helical rod is housed within the conveying pipe; one end of the helical rod is rotatably inserted into the graphite copper sleeve and is slidable relative to the inner wall of the graphite copper sleeve. A drive assembly is installed at the discharge end and closes the outlet of the discharge end; the output shaft of the drive assembly is connected to the end of the screw rod away from the sealing plate structure.

2. The screw conveyor according to claim 1, characterized in that, The conveying pipe includes a pipe body open at both ends, a first mounting plate extending circumferentially along the pipe body and disposed at one end of the pipe body, and a second mounting plate extending circumferentially along the pipe body and disposed at the other end of the pipe body; the inlet is provided on the side wall of the pipe body near the first mounting plate; the outlet is provided on the side wall of the pipe body near the second mounting plate; the sealing plate structure and the driving assembly are detachably connected to the first mounting plate and the second mounting plate, respectively.

3. The screw conveyor according to claim 2, characterized in that, It also includes multiple first connectors and multiple second connectors; the first mounting plate has multiple first connecting holes spaced apart circumferentially; the second mounting plate has multiple second connecting holes spaced apart circumferentially; the sealing plate structure has multiple first mounting holes spaced apart circumferentially; the end of the drive assembly near the tube body has multiple second mounting holes spaced apart circumferentially. One end of each of the first connectors is respectively inserted through one of the first mounting holes, and the other end is respectively inserted through one of the first mounting holes, so as to detachably connect the sealing plate structure and the first mounting plate. One end of each of the plurality of second connectors is respectively inserted through a plurality of second connection holes, and the other end is respectively inserted through a plurality of second mounting holes, so as to detachably connect the drive assembly and the second mounting plate.

4. The screw conveyor according to claim 2, characterized in that, Both the first mounting plate and the second mounting plate are annular plate structures; the first mounting plate has a first limiting groove circumferentially formed on the inner edge of the hole facing the tube body; the second mounting plate has a second limiting groove circumferentially formed on the inner edge of the hole facing the tube body; one end of the tube body with the feed inlet extends into the first limiting groove and is fixedly connected to the first mounting plate; one end of the tube body with the discharge outlet extends into the second limiting groove and is fixedly connected to the second mounting plate.

5. The screw conveyor according to claim 1, characterized in that, The sealing plate structure includes a plate body detachably installed at the feed end and a rotating mounting tube disposed on the side of the plate body facing the inside of the conveying pipe; the inner wall of the rotating mounting tube and the surface of the plate body facing the conveying pipe form the mounting groove.

6. The screw conveyor according to claim 1, characterized in that, The screw rod is provided with a limiting shoulder along the circumference at one end of the discharge end; the end face of the limiting shoulder away from the discharge end slides in contact with the end face of the graphite copper sleeve facing the discharge end.

7. The screw conveyor according to claim 6, characterized in that, The spiral rod includes a tubular rod body with openings at both ends, spiral blades disposed on the rod body and spirally extending around the rod body, and a mounting post; the mounting post has a limiting shoulder disposed in the middle along the circumferential direction; one end of the mounting post passes through the opening at one end of the rod body and is connected to the inner wall of the rod body for transmission, and the other end is rotatably inserted into the graphite copper sleeve.

8. The screw conveyor according to claim 6, characterized in that, There is a lubrication gap between the end face of the spiral rod located in the mounting groove and the bottom surface of the mounting groove; an oil hole communicating with the lubrication gap is provided on the sealing plate structure; an oil seal is detachably installed in the oil hole.

9. The screw conveyor according to claim 1, characterized in that, The conveying pipe is inclined, and the height of the feed end is lower than the height of the discharge end; the side wall of the feed end is formed with a discharge port for connecting to the discharge pipe, and the discharge port and the discharge port are located on the same side, both located on the side of the conveying pipe away from the feed port.

10. The screw conveyor according to claim 9, characterized in that, A discharge pipe is fixed at the discharge port; the end of the discharge pipe away from the conveying pipe is used to detachably connect to the discharge pipeline.

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