Novel adjustable sealing device
By introducing an adjustable sealing device into the roller crusher, and utilizing a multi-seal structure and air-tight technology, the sealing problem when the rotating shaft at the adjustment end is offset is solved, ensuring the effectiveness and durability of the seal and extending the service life of the equipment.
Patent Information
- Application Number
- CN202323514147.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2033-12-22
AI Technical Summary
When crushing new energy materials, the existing double-roll crusher is prone to failure of the sealing structure, especially after the adjustment end shaft is offset and cannot be fixed, resulting in poor sealing and easy material leakage.
An adjustable sealing device is adopted, which includes a shaft seat sealing cover plate, an adjustable sealing front plate and a rear plate, combined with elastic fasteners, a shaft sealing assembly and an air inlet connector. It forms an air seal by compressing gas, and uses a multi-seal structure and positioning pins to prevent relative displacement and ensure sealing effect.
It achieves a dynamic sealing effect when the rotating shaft at the adjustment end is offset, extends the service life of the crusher, improves the stability and durability of the sealing device, and prevents material powder from damaging the rotating shaft.
Smart Images
Figure CN222334492U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sealing devices, in particular to a novel adjustable sealing device. Background Art
[0002] The double-roll crusher is a crushing equipment widely used in the new energy materials industry. The unique roller structure enables block materials to be quickly crushed into granular powder. At the same time, the distance between the fixed roller and the adjustable end shaft can be adjusted according to the size of the customer's material to ensure that it is suitable for materials of various sizes. It has the advantages of no residue during discharge, low magnetic foreign matter, and less space occupied. It has been widely used in domestic new energy material production line manufacturers.
[0003] After the material enters the double-roll crusher, the two rollers engage with each other, so that the material is crushed and discharged after being subjected to the extrusion force. The distance between the fixed roller and the adjustable end shaft can be adjusted according to the actual situation of the customer's material to ensure the crushing effect. When the existing crusher is used at the customer's site, the sealing structure quickly fails due to reasons such as the fine particles of the new energy material powder. In addition, when the adjustable end shaft is offset, the sealing structure needs to move with the adjustable end shaft, but after the movement is completed, the sealing structure cannot be fixed, which affects the effectiveness of the seal during operation. Although the adjustable sealing plate is currently used in conjunction with the adjustable end shaft for sealing, the sealing between the adjustable end shaft and the adjustable sealing plate is still not guaranteed, the dynamic sealing effect does not meet expectations, and repeated use is still prone to leakage. Therefore, a new technical solution is urgently needed to solve at least one of the above problems. Summary of the invention
[0004] The utility model aims to provide a novel adjustable sealing device, which ensures the stability and durability of the sealing device, has good dynamic sealing effect, simple structure and convenient installation.
[0005] In order to achieve the above-mentioned technical objectives and meet the above-mentioned technical requirements, the technical solution adopted by the present invention is: a new type of adjustable sealing device, characterized in that it includes a shaft seat sealing cover plate, a shaft seat sealing rear seat arranged at the rear end of the shaft seat sealing cover plate, an adjustable sealing front plate, and an adjustable sealing rear plate detachably arranged at the rear end of the adjusting seal, the shaft seat sealing cover plate is connected to the shaft seat sealing rear seat, the shaft seat sealing cover plate and the shaft seat sealing rear seat form a cavity, the adjustable sealing front plate and the adjustable sealing rear plate are arranged in the cavity, the adjustable sealing front plate is sealingly connected to the shaft seat sealing cover plate, the adjustable sealing rear plate is sealingly connected to the shaft seat sealing rear seat, an elastic fastener is provided on the shaft seat sealing cover plate, the elastic fastener is abutted against the adjustable sealing front plate, sealing holes are provided in the centers of the adjustable sealing front plate and the adjustable sealing rear plate, a rotating shaft sealing assembly is provided in the sealing hole, and the rotating shaft sealing assembly is sealingly connected to the adjusting sealing front plate and the adjusting sealing rear plate.
[0006] As a preferred technical solution, the shaft sealing assembly includes a shaft sealing plate and two skeleton sealing rings. A mounting groove is respectively provided on both sides of the shaft sealing plate. The skeleton sealing ring is arranged in the mounting groove. A shaft mounting hole is provided in the center of the shaft sealing plate.
[0007] As a preferred technical solution, an air inlet connector is provided on the shaft seat sealing cover plate, and the air inlet connector is communicated with the cavity.
[0008] As a preferred technical solution, the rear end of the adjusting seal front plate is provided with a first air inlet groove extending radially therethrough, the front end of the adjusting seal rear plate is provided with a second air inlet groove extending radially therethrough, the first air inlet groove and the second air inlet groove form an air inlet channel, the outer peripheral surface of the rotating shaft sealing plate is provided with an air guide channel extending radially therethrough, and the air guide channel is communicated with the air inlet channel.
[0009] As a preferred technical solution, at least one axial positioning pin is inserted at the rear end of the regulating seal front plate, and the axial positioning pin is inserted on the regulating seal rear plate.
[0010] As a preferred technical solution, a plurality of radial positioning pins are radially inserted into the wall of the sealing hole, and the radial positioning pins abut against the rotating shaft sealing plate.
[0011] As a preferred technical solution, a sealing boss is provided at the rear end of the regulating sealing rear plate, and a VA sealing ring is sleeved on the sealing boss.
[0012] As a preferred technical solution, the shaft sealing plate is a bowl-shaped structure, and the shape of the sealing hole matches the shape of the outer circumferential surface of the shaft sealing plate.
[0013] As a preferred technical solution, a first sealing groove is provided at the front end of the adjusting sealing front plate, and a first O-ring is provided in the front of the first sealing groove.
[0014] As a preferred technical solution, the elastic fastener is a spring rod fastening screw.
[0015] The beneficial effects of the utility model are:
[0016] 1) The center of the roller mill is equipped with an adjustable end shaft. When the adjustable end shaft moves up and down, it realizes the function of dynamic sealing, ensuring the effectiveness of the seal and extending the service life of the roller mill;
[0017] 2) Preferably, the shaft seal assembly adopts two seals to improve the sealing effect, and has a reasonable structure and is easy to assemble;
[0018] 3) Preferably, compressed gas is introduced into the air inlet joint so that the compressed gas fills the cavity. Further preferably, the air inlet channel is connected to the cavity, and the compressed gas enters the air guide channel from the air inlet channel, and then enters the gap between the rotating shaft sealing plate and the adjusting end rotating shaft to form an air seal, which greatly improves the sealing performance and prevents material powder from damaging the adjusting section rotating shaft;
[0019] 4) Preferably, the axial positioning pin and the radial positioning pin are used to position the adjustment seal front plate and the adjustment seal rear plate to prevent relative displacement from affecting the sealing performance;
[0020] 5) Preferably, the sealing boss is easy to install the VA sealing ring;
[0021] 6) Preferably, the outer peripheral surface of the bowl-shaped structure is arc-shaped, which is not easy to cause relative displacement after installation, thereby improving the effectiveness of dynamic sealing;
[0022] 7) Preferably, a first sealing ring groove is provided on the surface, and the sealing of the cavity is increased by a first O-ring, which has a simple structure and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 A front view provided for an embodiment of the utility model;
[0024] Figure 2 A cross-sectional view provided for one embodiment of the utility model;
[0025] Figure 3 A structural diagram of a rotating shaft sealing assembly provided in one embodiment of the utility model.
[0026] exist Figure 1-3 1. shaft seat sealing cover plate; 101. cavity; 102. sealing hole; 103. first air inlet groove; 104. first sealing groove; 2. shaft seat sealing rear seat; 201. second air inlet groove; 202. sealing boss; 3. adjusting sealing front plate; 4. adjusting sealing rear plate; 5. elastic fastener; 6. shaft sealing assembly; 601. shaft sealing plate; 6011. mounting groove; 6012. shaft mounting hole; 6013. air guide channel; 602. skeleton sealing ring; 7. air inlet joint; 8. VA sealing ring; 9. axial locating pin; 10. radial locating pin; 11. first O-ring; 12. second O-ring; 13. square sealing strip; 14. third O-ring; 15. fourth O-ring; A. adjusting end shaft; B. double-roller crusher base. DETAILED DESCRIPTION
[0027] The present invention is further described below in conjunction with the accompanying drawings.
[0028] Please refer to Figure 1-3An embodiment of the utility model provides a novel adjustable sealing device, comprising a shaft seat sealing cover plate 1, a shaft seat sealing rear seat 2 arranged at the rear end of the shaft seat sealing cover plate 1, an adjustable sealing front plate 3, and an adjustable sealing rear plate 4 detachably arranged at the rear end of the adjustable sealing, the shaft seat sealing cover plate 1 is connected to the shaft seat sealing rear seat 2, a cavity 101 is formed inside the shaft seat sealing cover plate 1 and the shaft seat sealing rear seat 2, the adjustable sealing front plate 3 and the adjustable sealing rear plate 4 are arranged in the cavity 101, the adjustable sealing front plate 3 is sealedly connected to the shaft seat sealing cover plate 1, the adjustable sealing rear plate 4 is sealedly connected to the shaft seat sealing rear seat 2, an elastic fastener 5 is provided on the shaft seat sealing cover plate 1, the elastic fastener 5 is abutted against the adjustable sealing front plate 3, a sealing hole 102 is provided in the center of the adjustable sealing front plate 3 and the adjustable sealing rear plate 4, a rotating shaft sealing assembly 6 is provided in the sealing hole 102, and the rotating shaft sealing assembly 6 is sealedly connected to the adjustable sealing front plate 3 and the adjustable sealing rear plate 4.
[0029] An adjusting end rotating shaft A is provided at the center of the double-roll crusher. When the adjusting end rotating shaft A is offset, the elastic fastener 5 can be adjusted in degrees. The offset of the adjusting end rotating shaft A drives the adjusting sealing front plate 3 and the adjusting sealing rear plate 4 to move in the cavity 101 through the rotating shaft sealing assembly 6, and no relative displacement or other sealing leakage will occur, thereby realizing the function of dynamic sealing. When not working, the elastic fastener 5 limits the adjusting sealing front plate 3 and the adjusting sealing rear plate 4 to ensure the effectiveness of the seal, extend the service life of the double-roll crusher, and ensure the stability and durability of the sealing device.
[0030] It should be pointed out that the movement gap between the adjustment sealing front plate 3 and the adjustment sealing rear plate 4 is very small, and friction movement will occur during actual operation, so no obvious movement gap is shown in the drawings.
[0031] like Figure 1-3 As shown, in some embodiments, the shaft sealing assembly 6 includes a shaft sealing plate 601 and two skeleton sealing rings 602. A mounting groove 6011 is respectively provided on both sides of the shaft sealing plate 601. The skeleton sealing ring 602 is arranged in the mounting groove 6011. A shaft mounting hole 6012 is provided at the center of the shaft sealing plate 601. When the adjusting end shaft A is installed, a certain mounting gap is left between the shaft mounting hole 6012 and the adjusting end shaft A to facilitate the subsequent formation of an airtight seal. The shaft sealing assembly 6 adopts two-layer sealing to improve the sealing performance, has a reasonable structure, and is easy to assemble.
[0032] like Figure 1-3As shown, in some embodiments, the shaft seat sealing cover plate 1 is provided with an air inlet connector 7, the air inlet connector 7 is communicated with the cavity 101, and compressed gas is introduced into the air inlet connector 7 to fill the cavity 101, and compressed nitrogen is generally used. Further, the rear end of the regulating sealing front plate 3 is provided with a first air inlet groove 103 that penetrates radially, and the front end of the regulating sealing rear plate 4 is provided with a second air inlet groove 201 that penetrates radially, and the first air inlet groove 103 and the second air inlet groove 201 form an air inlet channel, and the outer peripheral surface of the rotating shaft sealing plate 601 is provided with a first air inlet groove 103 that penetrates radially. The air guide channel 6013 passes through, and the air guide channel 6013 is communicated with the air inlet channel. Since the adjusting seal front plate 3 is sealed with the shaft seat seal cover plate 1, the adjusting seal rear plate 4 is sealed with the shaft seat seal rear seat 2, and the two skeleton sealing rings 602 are sealed with the adjusting end shaft A, the compressed gas can only enter the air guide channel 6013 from the air inlet channel, and then enter the installation gap between the mounting hole and the adjusting end shaft A to form an air seal, which significantly improves the sealing performance, ensures the effectiveness of the dynamic seal, and prevents material powder from entering the installation gap to damage the adjusting end shaft A.
[0033] like Figure 1-3 As shown, in some embodiments, at least one axial positioning pin 9 is inserted at the rear end of the adjusting seal front plate 3, and the axial positioning pin 9 is inserted on the adjusting seal rear plate 4. Furthermore, a plurality of radial positioning pins 10 are radially inserted on the hole wall of the sealing hole 102, and the radial positioning pins 10 are abutted against the rotating shaft sealing plate 601. The axial positioning pins 9 axially position the adjusting seal front plate 3 and the adjusting seal rear plate 4, and the radial positioning pins 10 radially position the adjusting seal front plate 3 and the adjusting seal rear plate 4 to prevent relative displacement between the adjusting seal front plate 3 and the adjusting seal rear plate 4 and avoid affecting the effectiveness of the dynamic seal.
[0034] like Figure 1-3 As shown, in some of the embodiments, a sealing boss 202 is provided at the rear end of the regulating sealing rear plate 4, and a VA sealing ring 8 is sleeved on the sealing boss 202, which has a reasonable structure, is easy to install, and has a good sealing effect.
[0035] like Figure 1-3 As shown, in some embodiments, the shaft sealing plate 601 is a bowl-shaped structure, and the shape of the sealing hole 102 matches the shape of the outer circumferential surface of the shaft sealing plate 601. Since the outer circumferential surface of the bowl-shaped structure is arc-shaped, after assembly, the shaft sealing plate 601 is not easy to move relative to the adjustment sealing front plate 3, thereby improving the reliability of the dynamic seal.
[0036] like Figure 1-3As shown, in some embodiments, a first sealing groove 104 is provided at the front end of the adjusting sealing front plate 3, a first O-ring 11 is provided in the front of the first sealing groove 104, a second sealing groove is provided between the shaft seat sealing front plate and the shaft seat sealing rear seat 2, a second O-ring 12 is provided in the second sealing groove, and the shaft seat sealing rear seat 2 is installed on the double-roll crusher base B and is sealed and connected to it through a square sealing strip 13.
[0037] Furthermore, a third O-ring 14 and a fourth O-ring 15 are symmetrically embedded on the outer circumference of the shaft sealing plate 601 to further improve the sealing effect.
[0038] like Figure 1-3 As shown, in some embodiments, the elastic fastener 5 is a spring rod fastening screw, which is fastened by a nut, has a simple structure, is easy to select, and has low cost.
[0039] The above embodiments are merely descriptions for clearly illustrating the present invention, and are not limitations on the implementation methods. For technicians in the relevant field, other different forms of changes or modifications can be made based on the above descriptions. It is not necessary and impossible to list all the implementation methods here, and the obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.
Claims
1. A novel adjustable sealing device, characterized in that: The invention comprises a shaft seat sealing cover plate (1), a shaft seat sealing rear seat (2) arranged at the rear end of the shaft seat sealing cover plate (1), an adjustable sealing front plate (3), and an adjustable sealing rear plate (4) detachably arranged at the rear end of the adjustable sealing, wherein the shaft seat sealing cover plate (1) is connected to the shaft seat sealing rear seat (2), a cavity (101) is formed inside the shaft seat sealing cover plate (1) and the shaft seat sealing rear seat (2), the adjustable sealing front plate (3) and the adjustable sealing rear plate (4) are arranged in the cavity (101), and the adjustable sealing front plate (3) and the shaft seat sealing rear seat (2) are connected to each other. The sealing cover plate (1) is sealingly connected, the adjusting sealing rear plate (4) is sealingly connected to the shaft seat sealing rear seat (2), an elastic fastener (5) is provided on the shaft seat sealing cover plate (1), the elastic fastener (5) is abutted against the adjusting sealing front plate (3), a sealing hole (102) is provided at the center of the adjusting sealing front plate (3) and the adjusting sealing rear plate (4), a rotating shaft sealing assembly (6) is provided in the sealing hole (102), and the rotating shaft sealing assembly (6) is sealingly connected to the adjusting sealing front plate (3) and the adjusting sealing rear plate (4).
2. A novel adjustable sealing device according to claim 1, characterized in that: The rotating shaft sealing assembly (6) comprises a rotating shaft sealing plate (601) and two skeleton sealing rings (602); a mounting groove (6011) is respectively arranged on both sides of the rotating shaft sealing plate (601); the skeleton sealing ring (602) is arranged in the mounting groove (6011); and a rotating shaft mounting hole (6012) is arranged at the center of the rotating shaft sealing plate (601).
3. A novel adjustable sealing device according to claim 2, characterized in that: An air intake connector (7) is provided on the shaft seat sealing cover plate (1), and the air intake connector (7) is in communication with the cavity (101).
4. A novel adjustable sealing device according to claim 3, characterized in that: The rear end of the regulating seal front plate (3) is provided with at least one first air inlet groove (103) penetrating along its radial direction, and the front end of the regulating seal rear plate (4) is provided with at least one second air inlet groove (201) penetrating along its radial direction, the first air inlet groove (103) and the second air inlet groove (201) forming an air inlet channel, and the outer peripheral surface of the rotating shaft sealing plate (601) is provided with an air guide channel (6013) penetrating along its radial direction, and the air guide channel (6013) is communicated with the air inlet channel.
5. A novel adjustable sealing device according to claim 1, characterized in that: At least one axial positioning pin (9) is inserted at the rear end of the regulating seal front plate (3), and the axial positioning pin (9) is inserted on the regulating seal rear plate (4).
6. A novel adjustable sealing device according to claim 2, characterized in that: A plurality of radial positioning pins (10) are radially inserted into the wall of the sealing hole (102), and the radial positioning pins (10) abut against the rotating shaft sealing plate (601).
7. A novel adjustable sealing device according to claim 1, characterized in that: A sealing boss (202) is provided at the rear end of the regulating sealing rear plate (4), and a VA sealing ring (8) is sleeved on the sealing boss (202).
8. A novel adjustable sealing device according to claim 2, characterized in that: The rotating shaft sealing plate (601) is a bowl-shaped structure, and the shape of the sealing hole (102) matches the shape of the outer peripheral surface of the rotating shaft sealing plate (601).
9. A novel adjustable sealing device according to claim 1, characterized in that: A first sealing groove (104) is provided at the front end of the regulating sealing front plate (3), and a first O-ring (11) is provided in the front of the first sealing groove (104).
10. A novel adjustable sealing device according to any one of claims 1 to 9, characterized in that: The elastic fastener (5) is a spring rod fastening screw.