Double-sealing structure of single-cylinder cone crusher
By adopting a double sealing structure in the cone crusher, independent dust-proof gas path and sealing design, the problems of poor return of lubricating oil and dust entry in the prior art are solved, and the normal operation and sealing effect of the equipment are achieved.
Patent Information
- Application Number
- CN202422701377.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-11-06
AI Technical Summary
In the dustproof system of the existing cone crusher, the gas circuit and the oil circuit of the lubricating system are mixed, resulting in poor return oil and easy overflow when the air pressure is too high, and dust can easily enter the equipment, affecting the lubricating oil life and normal operation of the equipment.
A double seal structure is adopted, including a sealing cylinder, a dust ring and a dust drag ring. Pressurized air is input into the sealing cylinder through an independent dust-proof air path to form a first seal to prevent dust from entering; at the same time, the seal at the lower end of the moving cone forms a second seal with the sealing cylinder to ensure that the internal pressure is higher than the outside world and prevent dust from entering.
It realizes complete isolation between the oil and gas circuits of the cone crusher, avoids poor return of lubricant oil and overflow, effectively prevents dust from entering, and ensures normal operation of the equipment.
Smart Images
Figure CN223242074U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of crusher sealing, in particular to a double sealing structure of a single-cylinder cone crusher. Background Art
[0002] Cone crushers, specialized equipment for material crushing, are widely used for secondary and fine crushing of raw materials in industries such as mining, smelting, building materials, and water conservancy. A single-cylinder cone crusher primarily consists of a frame, drive shaft, eccentric sleeve, and hydraulic lubrication system. During operation, the drive mechanism transmits power to the drive shaft via a V-belt. The meshing of large and small gears on the drive shaft rotates the eccentric mechanism, causing the moving cone to oscillate under the action of the eccentric mechanism, forming a crushing chamber with the mortar wall fixed to the upper frame. The material is crushed by the oscillating motion of the moving cone, which compresses and impacts the material, creating a large amount of fine dust. During the crushing process, the crushing of the material and the influence of the surrounding environment generate a large amount of fine dust. During the circulation of the cone crusher's lubricating oil, the internal pressure is lower than the external pressure, causing fine dust to enter the equipment through the gaps between the joints, contaminating the lubricating oil and shortening its service life. In severe cases, it can wear internal components and cause the cone crusher to malfunction.
[0003] Currently, cone crushers are equipped with a lubrication system and a dust control system. The lubrication system delivers lubricating oil to various parts of the cone crusher, while the dust control system prevents external dust from entering the crusher. A sealing cylinder is installed inside the cone crusher. The dust control system works by directly introducing pressurized gas into the sealing cylinder via a dust control blower, ensuring that the pressure inside the cone crusher is always greater than the external atmospheric pressure, thereby preventing external dust from entering the cone crusher. However, in actual use, this dust control system has the following problems: the existing dust control system's air circuit and the lubrication system's oil circuit are mixed. Because the dust control system introduces pressurized gas into the dust cover, excessive air pressure can result in poor lubricating oil return and lead to overflow from the top of the sealing cylinder. Utility Model Content
[0004] In view of the problems existing in the prior art, the utility model provides a double sealing structure of a single-cylinder cone crusher.
[0005] The technical solution adopted by the utility model to solve the above technical problems is: a double sealing structure of a single-cylinder cone crusher, including a sealing cylinder fixed on the lower frame, a dust ring sleeved on the outside of the sealing cylinder and a dust drag ring arranged at the lower end of the moving cone, the outer side of the dust ring is embedded and fixed between the moving cone and the dust drag ring, a first air inlet is provided on the lower frame in the vertical direction, a second air inlet connected to the first air inlet is provided in the sealing cylinder, an air outlet connected to the second air inlet is provided on the inner wall of the sealing cylinder, a sealing member is provided at the lower end of the dust drag ring, and the lower end of the sealing member is in contact with the outer wall of the sealing cylinder.
[0006] As a preferred solution, the sealing cylinder includes an inclined portion and a vertical portion located at the upper end of the inclined portion, the dust ring is arranged on the outside of the vertical portion, and the lower end of the seal contacts the outer wall of the inclined portion.
[0007] As a preferred solution, the second air inlet includes a second air inlet inclined portion arranged in the inclined portion and a second air inlet vertical portion arranged in the vertical portion, the lower end of the second air inlet inclined portion is connected to the air outlet, and the upper end is connected to the second air inlet vertical portion.
[0008] As a preferred solution, the seal includes a horizontal section, an arc section and an inclined section. The horizontal section is fixed at the lower end of the dustproof drag ring, the inclined section is in contact with the outer wall of the inclined part, one end of the arc section is connected to the horizontal section, and the other end is connected to the inclined section, and the concave surface of the arc section faces outward.
[0009] As a preferred solution, the sealing member includes a first sealing plate and a second sealing plate arranged outside the first sealing plate.
[0010] As a preferred solution, the first sealing plate and the second sealing plate are both rubber plates.
[0011] As a preferred solution, the air outlet is arranged to be tilted upward, and the angle between the air outlet and the horizontal plane is 45°.
[0012] As a preferred solution, the first air inlet is connected to the dust-proof fan through a pipeline.
[0013] The beneficial effects of the present application are: 1. The dust-proof fan inputs air into the sealing cylinder through the first air inlet, the second air inlet and the air outlet. Compared with the method of directly inputting pressurized gas into the sealing cylinder in the prior art, the first air inlet, the second air inlet and the air outlet of the present application form an independent dust-proof air path, so that the oil circuit and the air circuit inside the cone crusher are completely isolated, effectively avoiding the phenomenon of poor oil return and overflow of lubricating oil caused by excessive air pressure.
[0014] 2. A seal is provided between the dustproof drag ring and the sealing cylinder at the lower end of the dynamic cone of the present application to prevent large particles of dust from entering the interior of the equipment, thereby forming a first seal. Secondly, the dustproof fan inputs pressurized air into the first air inlet of the lower frame, and the air enters the sealing cylinder after passing through the first air inlet, the second air inlet, and the air outlet, so that the pressure inside the cone crusher is always greater than the external environmental pressure, effectively preventing external dust from entering the interior of the cone crusher, thereby achieving the purpose of dust prevention, thereby forming a second seal, and thus realizing the effect of double sealing. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural diagram of the utility model;
[0016] Figure 2 This is a schematic structural diagram of the sealing element of the present invention.
[0017] Markings in the figure: 1. Moving cone, 2. Sealing cylinder, 21. Second air inlet hole, 211. Inclined portion of the second air inlet hole, 212. Vertical portion of the second air inlet hole, 3. Dustproof ring, 4. Dustproof support ring, 5. Lower frame, 51. First air inlet hole, 6. First sealing plate, 7. Second sealing plate, 8. Bolt. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that in the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0019] See also Figure 1-2The present invention provides a double-sealing structure for a single-cylinder cone crusher, comprising a sealing cylinder 2 fixed to a lower frame 5, a dust ring 3 sleeved on the outside of the sealing cylinder 2, and a dust ring 4 disposed at the lower end of the moving cone 1. The dust ring 3 is embedded and fixed between the moving cone 1 and the dust ring 4. A first air inlet 51 is vertically defined on the lower frame 5, a second air inlet 21 communicating with the first air inlet 51 is defined within the sealing cylinder 2, and an air outlet communicating with the second air inlet 21 is defined on the inner wall of the sealing cylinder 2 near its upper end. A sealing member is disposed at the lower end of the dust ring 4, the lower end of which contacts the outer wall of the sealing cylinder 2. The sealing cylinder 2 is mounted on the lower frame 5 via fixing bolts.
[0020] The sealing cylinder 2 includes an inclined portion and a vertical portion located above the inclined portion. The dust ring 3 is mounted outside the vertical portion, with the lower end of the seal contacting the outer wall of the inclined portion. The second air inlet 21 includes a second air inlet inclined portion 211 disposed within the inclined portion and a second air inlet vertical portion 212 disposed within the vertical portion. The lower end of the second air inlet inclined portion 211 communicates with the air outlet, and the upper end communicates with the second air inlet vertical portion 212.
[0021] The lower end of the seal of the present application is lower than the inclined portion of the sealing cylinder 2 and cooperates with it in a dynamic seal. When the dynamic cone 1 rotates relative to the lower frame body 3, small particles and dust accumulated in the corresponding range on the wall surface of the inclined portion of the sealing cylinder 2 can be cleared away.
[0022] Specifically, the seal includes a horizontal section, an arcuate section, and an inclined section. The horizontal section is fixed to the lower end of the dustproof drag ring 4. The inclined section contacts the outer wall of the inclined portion. One end of the arcuate section is connected to the horizontal section, and the other end is connected to the inclined section. The concave surface of the arcuate section faces outward. The seal includes a first sealing plate 6 and a second sealing plate 7 disposed outside the first sealing plate 6. The first sealing plate 6 and the second sealing plate 7 are both rubber plates. The first sealing plate 6, the second sealing plate 7, and the dustproof drag ring 4 are mounted on the lower end of the moving cone 1 via bolts 8 and spring washers. It should be noted that the portions not described in detail in this application are prior art.
[0023] In addition, the air outlet is tilted upward, and the angle between the air outlet and the horizontal plane is 45 degrees. The first air inlet 51 is connected to the dustproof fan through a pipeline, and the dustproof fan outlet is connected to the first air inlet 51 through a pipeline.
[0024] In the present application, a seal is provided between the dustproof drag ring 4 at the lower end of the dynamic cone 1 and the sealing cylinder 2 to prevent large particles of dust from entering the interior of the equipment, thereby forming a first seal. Secondly, the dustproof fan inputs pressurized air into the first air inlet 51 of the lower frame 5, and the air enters the sealing cylinder 2 after passing through the first air inlet 51, the second air inlet 51 and the air outlet, forming a dustproof air path between the dynamic cone 1, the dustproof ring 3 and the sealing cylinder 2, so that the pressure inside the cone crusher is always greater than the external environmental pressure, effectively preventing external dust from entering the interior of the cone crusher, thereby achieving the purpose of dust prevention, thereby forming a second seal, and thus realizing the effect of double sealing.
[0025] The dust-proof fan of the present application inputs air into the sealing cylinder 2 through the first air inlet hole 51, the second air inlet hole 21 and the air outlet hole. Compared with the method of directly inputting pressurized gas into the sealing cylinder in the prior art, the first air inlet hole 51, the second air inlet hole 21 and the air outlet hole of the present application form an independent dust-proof air path, so that the oil path and the air path inside the cone crusher are completely isolated, effectively avoiding the phenomenon of poor oil return and overflow of lubricating oil caused by excessive air pressure.
[0026] Of course, the present invention is not limited to the above-described embodiments. Several other embodiments based on the design concept of the present invention are provided below.
[0027] For example, in other embodiments, different from the embodiments described above, the inner wall of the sealing tube 2 is provided with a blowing pipe connected to the air outlet, the blowing pipe is annular, and a plurality of blowing holes are provided on the inner side of the blowing pipe along its circumferential direction. The number of the blowing holes is six or eight, and the blowing holes are arranged to be inclined upward, and the angle between the air outlet and the horizontal plane is 45°.
[0028] It should be noted that the above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the scope of protection of the present invention.
Claims
1. A double sealing structure of a single-cylinder cone crusher, comprising a sealing cylinder (2) fixed on a lower frame (5), a dust ring (3) sleeved on the outside of the sealing cylinder (2), and a dust drag ring (4) arranged at the lower end of a moving cone (1), wherein the outer side of the dust ring (3) is embedded between the moving cone (1) and the dust drag ring (4) and is fixed, characterized in that: A first air inlet (51) is provided on the lower frame (5) in a vertical direction, a second air inlet (21) is provided in the sealing cylinder (2) and is communicated with the first air inlet (51), an air outlet is provided on the inner wall of the sealing cylinder (2) and is communicated with the second air inlet (21), a sealing member is provided at the lower end of the dustproof drag ring (4), and the lower end of the sealing member contacts the outer wall of the sealing cylinder (2).
2. The double sealing structure of a single-cylinder cone crusher according to claim 1, characterized in that: The sealing cylinder (2) comprises an inclined portion and a vertical portion located at the upper end of the inclined portion; the dust ring (3) is sleeved on the outside of the vertical portion; and the lower end of the sealing member contacts the outer wall of the inclined portion.
3. The double sealing structure of a single-cylinder cone crusher according to claim 2, characterized in that: The second air inlet (21) comprises a second air inlet inclined portion (211) arranged in the inclined portion and a second air inlet vertical portion (212) arranged in the vertical portion; the lower end of the second air inlet inclined portion (211) is communicated with the air outlet, and the upper end is communicated with the second air inlet vertical portion (212).
4. The double sealing structure of a single-cylinder cone crusher according to claim 2, characterized in that: The sealing member comprises a horizontal section, an arc section and an inclined section, the horizontal section is fixed to the lower end of the dustproof drag ring (4), the inclined section contacts the outer wall of the inclined portion, one end of the arc section is connected to the horizontal section, and the other end is connected to the inclined section, with the concave surface of the arc section facing outwards.
5. The double sealing structure of a single-cylinder cone crusher according to claim 3, characterized in that: The sealing member comprises a first sealing plate (6) and a second sealing plate (7) arranged outside the first sealing plate (6).
6. The double sealing structure of a single-cylinder cone crusher according to claim 5, characterized in that: The first sealing plate (6) and the second sealing plate (7) are both rubber plates.
7. The double sealing structure of a single-cylinder cone crusher according to claim 1, characterized in that: The air outlet is arranged to be tilted upward, and the angle between the air outlet and the horizontal plane is 45 degrees.
8. The double sealing structure of a single-cylinder cone crusher according to claim 1, characterized in that: The first air inlet (51) is connected to the dust-proof fan via a pipeline.