Shaft end sealing assembly, rotary screening equipment and gypsum board production line

Abstract

The invention discloses a shaft end sealing assembly, rotary screening equipment and a gypsum board production line. The shaft end sealing assembly comprises a supporting seat, a wear-resistant part and an end cover, and the supporting seat is provided with a first through hole; the wear-resistant part is cylindrical, is positioned in the first through hole, is coaxial with the first through hole and is used for sleeving the first end part of the rotating shaft; the end cover is connected with the supporting seat and covers one end of the first through hole. The shaft end sealing assembly has good sealing performance, and the first end of the rotating shaft can be prevented from leaking materials.

Description

Technical Field

[0001] The present application relates to the technical field of shaft end sealing equipment of rotating shafts, and in particular to a shaft end sealing assembly, a rotary screening device and a gypsum board production line. Background Art

[0002] The main raw material of gypsum board products is gypsum, which is produced by calcining raw gypsum at high temperature. During the mining and transportation process, raw gypsum is usually mixed with a large amount of impurities such as stones, scrap iron blocks and other debris. Raw gypsum will be roughly screened before calcination. After calcination, raw gypsum needs to be finely screened to remove debris such as gravel, paper scraps, gypsum slabs and other debris in the gypsum powder.

[0003] Usually, a rotary screen is used to finely screen the gypsum powder. The gypsum powder just calcined has a high material temperature (generally around 130°C), and the finer particles have extremely high fluidity, so the connection between the shaft and the shell near the feed port of the rotary screening equipment has a high sealing requirement to prevent the gypsum powder from leaking out from the connection between the shaft and the shell.

[0004] In the prior art, the rotating shaft and the shell near the feed port of the rotary screening equipment are sealed and connected by bearings and sealing rings. This may cause gypsum powder to enter the internal gap of the bearing and damage the bearing. In addition, the shaft end sealing structure is not resistant to high temperatures and is prone to wear, causing the gypsum powder raw material to leak through the shaft end sealing structure to the outside of the shell, resulting in leakage and loss of gypsum powder raw material. Workers need to clean the production site environment frequently. Summary of the invention

[0005] An embodiment of the present application provides a shaft end sealing assembly, a rotary screening device and a gypsum board production line. The shaft end sealing assembly is provided with a wear-resistant part on the first end of the rotating shaft. The wear-resistant part can prevent the shaft from being worn due to rotation and the high temperature of the material from damaging the shaft end sealing assembly, thereby ensuring the effective sealing of the shaft end sealing assembly and avoiding material leakage at the first end of the rotating shaft.

[0006] The embodiment of the present application provides a shaft end sealing assembly, comprising:

[0007] The support seat is provided with a first through hole;

[0008] a wear-resistant member, which is cylindrical in structure, is located in the first through hole and is coaxial with the first through hole, and is used to be sleeved on the first end of the rotating shaft; and

[0009] An end cover is connected to the support base and covers one end of the first through hole.

[0010] A rotary screening device comprises a shaft end sealing assembly as described in the above embodiment, and also comprises a rotating shaft and a shell provided with a first mounting hole, wherein the first mounting hole is connected to the first through hole of the shaft end sealing assembly, the rotating shaft is at least partially located inside the shell and can rotate to screen materials, the first end of the rotating shaft passes through the shell and is rotatably connected to the wear-resistant part of the shaft end sealing assembly, the support seat of the shaft end sealing assembly is connected to the outer wall of the shell, and the support seat and the end cover jointly seal the first mounting hole.

[0011] A gypsum board production line comprises the rotary screening device as described in the above embodiment.

[0012] The technical effects of the shaft end sealing assembly of the embodiment of the present application are as follows:

[0013] The shaft end sealing assembly of the present application is provided with an end cover connected to the support seat and covering one end of the first through hole, so that the end cover and the support seat can form a chamber with one end open and the other end sealed, and a wear-resistant part is provided on the outside of the first end portion of the rotating shaft, so that when the rotating shaft rotates, the outer wall of the rotating shaft contacts the inner wall of the wear-resistant part, and because the wear-resistant part has the performance of high temperature resistance and wear resistance, the shaft end sealing assembly can be prevented from being worn and damaged when the rotating shaft rotates, thereby ensuring the sealing of the shaft end sealing assembly and preventing materials from leaking out from the position of the shaft end sealing assembly.

[0014] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide an understanding of the technical solution of the present application 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 present application and do not constitute a limitation on the technical solution of the present application.

[0016] Figure 1 This is a schematic diagram of the structure of a rotary screening device according to an embodiment of the present application;

[0017] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of part A. DETAILED DESCRIPTION

[0018] Please see attached Figure 1 to Figure 2 The structure diagram of the shaft end seal assembly 100 and the rotary screening device 200 of the embodiment of the present application is shown in FIG. Figure 1 and Figure 2As shown, the embodiment of the present application provides a shaft end sealing assembly 100, comprising a support seat 1, a wear-resistant member 2 and an end cover 3. The support seat 1 is provided with a first through hole 11; the wear-resistant member 2 is cylindrical, located in the first through hole 11 and coaxial with the first through hole 11, and is used to be sleeved on the first end 41 of the rotating shaft 4; the end cover 3 is connected to the support seat 1 and covers one end of the first through hole 11.

[0019] Specifically, the shaft end seal assembly 100 of the embodiment of the present application, the support seat 1, the wear-resistant part 2 and the end cover 3 are connected together to form a chamber with one end closed and the other end open, and the chamber is used to accommodate the first end 41 of the rotating shaft 4. The wear-resistant part 2 is sleeved on the outside of the first end 41 of the rotating shaft 4, so that when the rotating shaft 4 rotates, the outer wall of the rotating shaft 4 contacts the inner wall of the wear-resistant part 2. Since the wear-resistant part 2 has the performance of high temperature resistance and wear resistance, it can avoid the shaft end seal assembly 100 from being worn and damaged when the rotating shaft 4 rotates, ensure the sealing performance of the shaft end seal assembly 100, and avoid the leakage of materials from the shaft end seal assembly 100.

[0020] Optionally, the wear-resistant part 2 may be configured to include a cemented carbide material.

[0021] In an exemplary embodiment, Figure 2 As shown, the end cover 3 is provided with an oil filling hole 31 , one end of the oil filling hole 31 is connected to the first through hole 11 , and the oil filling hole 31 is configured as a channel for injecting lubricating oil into the first through hole 11 .

[0022] The lubricating oil is set to high temperature lithium grease.

[0023] Specifically, high-temperature lithium-based grease is a polymer with strong thermal stability, good anti-aging, anti-oxidation and low friction coefficient. High-temperature lithium-based grease can be used to manufacture lubricants and high-temperature sealing materials, which can effectively improve the friction coefficient between mechanical parts, reduce abnormal wear, and extend the service life of mechanical parts. The shaft end sealing assembly 100 of the embodiment of the present application injects high-temperature lithium-based grease into the first through hole 11 through the oil filling hole 31, so that a high-temperature and wear-resistant lubricating oil pool is formed in the first through hole 11, which can further prevent the shaft end sealing assembly 100 of the present application from being damaged by wear when the shaft 4 rotates.

[0024] Optionally, the axis of the oil injection hole 31 is colinear with the axis of the rotating shaft 4, so that when the lubricating oil is injected into the first through hole 11 from the oil injection hole 31, the lubricating oil can be distributed more evenly in the circumferential direction of both the wear-resistant part 2 and the first end 41 of the rotating shaft 4.

[0025] In an exemplary embodiment, Figure 2As shown, the support seat 1 includes a base member 12 provided with a first internal channel 121 and a flange member 13 provided with a second internal channel 131, the base member 12 and the flange member 13 are connected, the first internal channel 121 and the second internal channel 131 are connected to form a first through hole 11, the wear-resistant member 2 is arranged in the second internal channel 131, and the end cover 3 is connected to one end of the flange member 13 facing away from the base member 12 and covers one end of the second internal channel 131 facing away from the first internal channel 121.

[0026] In an exemplary embodiment, Figure 2 As shown, the support seat 1 also includes a retaining ring 14, and the portion of the rotating shaft 4 extending into the first through hole 11 is configured as a stepped shaft, and the stepped shaft includes a first shaft segment 42 and a second shaft segment 43 connected to each other. The radial inner end of the retaining ring 14 is sleeved on and limited to the second shaft segment 43, and the radial outer end of the retaining ring 14 is connected to the radial inner end of the base member 12; the wear-resistant part 2 is sleeved on the first shaft segment 42; and the end of the wear-resistant part 2 facing away from the end cover 3 is limited by a shaft shoulder 44 between the first shaft segment 42 and the second shaft segment 43.

[0027] Along the axial direction of the rotating shaft 4 , a gap is provided between the retaining ring 14 and the flange 13 .

[0028] Specifically, a gap is provided between the retaining ring 14 and the flange 13 , so that more lubricating oil can be stored in the first through hole 11 , so that the first through hole 11 forms a lubricating oil pool, thereby improving the lubricating effect of the lubricating oil on the relative rotation of the rotating shaft 4 and the wear-resistant part 2 .

[0029] The retaining ring 14 has a positioning and limiting function for the base member 12 , ensuring that the base member 12 and the rotating shaft 4 are coaxially arranged.

[0030] In an exemplary embodiment, Figure 2 As shown, the flange 13 is provided with reinforcing ribs 132 distributed circumferentially along the axis of the rotating shaft 4 .

[0031] Specifically, the reinforcing rib 132 has the function of strengthening and reinforcing the support base 1 .

[0032] The present application embodiment provides a rotary screening device 200, such as Figure 1 As shown, it includes a shaft end sealing assembly 100 as described in any one of the above exemplary embodiments, and also includes a rotating shaft 4 and a shell 5 provided with a first mounting hole 51, the first mounting hole 51 is connected to the first through hole 11 of the shaft end sealing assembly 100, the rotating shaft 4 is at least partially located inside the shell 5 and can rotate to screen materials, the first end 41 of the rotating shaft 4 passes through the shell 5 and is rotatably connected to the wear-resistant part 2 of the shaft end sealing assembly 100, the support seat 1 of the shaft end sealing assembly 100 is connected to the outer wall 52 of the shell 5, and the support seat 1 and the end cover 3 jointly seal the first mounting hole 51.

[0033] Specifically, the rotary screening device 200 of the embodiment of the present application includes the shaft end sealing assembly 100 as described in any one of the above exemplary embodiments, and therefore has the structural features and advantages of the shaft end sealing assembly 100 as described in any one of the above exemplary embodiments, which are not repeated here.

[0034] The support seat 1 and the end cover 3 jointly seal the first mounting hole 51. When the rotating shaft 4 rotates, the first end 41 of the rotating shaft 4 is rotatably connected to the wear-resistant part 2. The first end 41 will not cause wear and damage to the shaft end sealing assembly 100, thereby ensuring the sealing of the connection between the first mounting hole 51 of the shell 5 and the rotating shaft 4, and preventing the material inside the shell 5 from leaking from the first mounting hole 51 to the outside of the shell 5.

[0035] In an exemplary embodiment, Figure 1 As shown, the housing 5 is provided with a feed inlet 53 , and the feed inlet 53 is arranged on a side of the housing 5 close to the shaft end sealing assembly 100 .

[0036] Specifically, the feed port 53 is arranged on a side of the shell 5 close to the shaft end sealing assembly 100, and the shaft end sealing assembly 100 has good sealing performance, which can prevent the material entering the shell 5 from the feed port 53 from leaking out from the shaft end sealing assembly 100, thereby better ensuring the sealing performance of the shell 5 near the feed port 53.

[0037] In an exemplary embodiment, Figure 1 As shown, the rotary screening device 200 further includes a driving assembly 6, and the rotating shaft 4 further includes a second end 45 arranged opposite to the first end 41, the second end 45 extends out of the shell 5 and is connected to the driving assembly 6, and the driving assembly 6 is configured to drive the rotating shaft 4 to rotate.

[0038] Specifically, the driving assembly 6 is used to drive the rotating shaft 4 to rotate so as to screen the materials inside the stirring shell 5. Since it is not easy to ensure the sealing of the second end 45 where the rotating shaft 4 is connected to the driving assembly 6, the driving assembly 6 is arranged at the end away from the feed inlet 53 of the shell 5, so that the sealing of the end of the rotating shaft 4 near the feed inlet 53 can be better ensured.

[0039] In an exemplary embodiment, Figure 1 As shown, the rotary screening device 200 also includes an extension shaft 7 , one end of which is fixedly connected to the second end portion 45 , and the extension shaft 7 is coaxially arranged with the rotating shaft 4 , and the other end of the extension shaft 7 is connected to the driving assembly 6 .

[0040] Specifically, an extension shaft 7 is provided to facilitate the connection of the second end portion 45 of the rotating shaft 4 with the driving assembly 6 .

[0041] In an exemplary embodiment, Figure 1As shown, the rotary screening device 200 also includes a bearing 8 and a bearing seat 9, the radial outer end of the bearing 8 is connected to the inner cavity wall of the bearing seat 9, and the extended shaft 7 is passed through the bearing 8 so that the bearing seat 9 and the bearing 8 support the extended shaft 7 to rotate.

[0042] Alternatively, if Figure 1 As shown, the bearings 8 can be arranged in two or more spaces along the axial direction of the rotating shaft 4 , and the bearings 8 can be single-row tapered roller bearings to improve the rotation support strength and service life of the bearings 8 .

[0043] In an exemplary embodiment, Figure 1 As shown, the driving assembly 6 includes a sprocket 61 , which is mounted to one end of the extension shaft 7 away from the second end 45 . The sprocket 61 is used to drive the extension shaft 7 to rotate and drive the rotating shaft 4 to rotate.

[0044] An embodiment of the present application provides a gypsum board production line, comprising a rotary screening device 200 as described in any one of the above exemplary embodiments.

[0045] Specifically, the gypsum board production line of the embodiment of the present application includes a rotary screening device 200 and a shaft end sealing assembly 100 as described in any one of the above exemplary embodiments, and therefore has the structural features and advantages of the shaft end sealing assembly 100 described in any one of the above exemplary embodiments, which will not be repeated here.

[0046] Optionally, the rotary screening device 200 is used to screen the gypsum powder obtained by calcining raw gypsum at high temperature.

[0047] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. The terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0048] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0050] The present application describes multiple embodiments, but the description is exemplary rather than restrictive, and it is obvious to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described in the present application. Although many possible feature combinations are shown in the drawings and discussed in the specific embodiments, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

Claims

1. A shaft end seal assembly, characterized in that: include: The support seat is provided with a first through hole; a wear-resistant member, which is cylindrical in structure, is located in the first through hole and is coaxial with the first through hole, and is used to be sleeved on the first end of the rotating shaft; and An end cover is connected to the support base and covers one end of the first through hole.

2. The shaft end seal assembly according to claim 1, characterized in that: The end cover is provided with an oil filling hole, one end of which is connected to the first through hole, and the oil filling hole is configured as a channel for injecting lubricating oil into the first through hole; The lubricating oil is set as high temperature lithium-based grease.

3. The shaft end seal assembly according to claim 2, characterized in that: The support seat includes a base member provided with a first internal channel and a flange member provided with a second internal channel, the base member and the flange member are connected, the first internal channel and the second internal channel are connected to form the first through hole, the wear-resistant member is arranged in the second internal channel, and the end cover is connected to an end of the flange member facing away from the base member and covers an end of the second internal channel facing away from the first internal channel.

4. The shaft end seal assembly according to claim 3, characterized in that: The support seat also includes a retaining ring, the portion of the rotating shaft extending into the first through hole is set as a stepped shaft, the stepped shaft includes a first shaft section and a second shaft section connected to each other, the radial inner end of the retaining ring is sleeved and limited to the second shaft section, and the radial outer end of the retaining ring is connected to the radial inner end of the base member; the wear-resistant member is sleeved on the first shaft section; the end of the wear-resistant member away from the end cover is limited by a shaft shoulder between the first shaft section and the second shaft section; Along the axial direction of the rotating shaft, a gap is provided between the retaining ring and the flange.

5. A rotary screening device, characterized in that: It includes a shaft end sealing assembly as described in any one of claims 1 to 4, and also includes a rotating shaft and a shell provided with a first mounting hole, the first mounting hole is connected to the first through hole of the shaft end sealing assembly, the rotating shaft is at least partially located inside the shell and can rotate to screen materials, the first end of the rotating shaft passes through the shell and is rotatably connected to the wear-resistant part of the shaft end sealing assembly, the support seat of the shaft end sealing assembly is connected to the outer wall of the shell, and the support seat and the end cover jointly seal the first mounting hole.

6. The rotary screening device according to claim 5, characterized in that: The shell is provided with a feed inlet, and the feed inlet is arranged on a side of the shell close to the shaft end sealing assembly.

7. The rotary screening device according to claim 5, characterized in that: The rotary screening device further includes a driving assembly, and the rotating shaft further includes a second end portion arranged opposite to the first end portion, the second end portion extends out of the housing and is connected to the driving assembly, and the driving assembly is configured to drive the rotating shaft to rotate.

8. The rotary screening device according to claim 7, characterized in that: The rotary screening device also includes an extension shaft, one end of which is fixedly connected to the second end portion, and the extension shaft is coaxially arranged with the rotating shaft, and the other end of the extension shaft is connected to the driving assembly.

9. The rotary screening device according to claim 8, characterized in that: The rotary screening device also includes a bearing and a bearing seat, wherein the radial outer end of the bearing is connected to the inner cavity wall of the bearing seat, and the extension shaft passes through the bearing so that the bearing seat and the bearing support the extension shaft to perform rotational motion.

10. The rotary screening device according to claim 8, characterized in that: The driving assembly includes a sprocket, which is mounted to an end of the extension shaft away from the second end portion, and the sprocket is used to drive the extension shaft to rotate and drive the rotating shaft to rotate.

11. A gypsum board production line, characterized in that: The invention comprises the rotary screening device as claimed in any one of claims 5 to 10.

Images