Sealing device for roll shaft of roll crusher

Abstract

The utility model relates to the technical field of sealing of roll crushers, in particular to a sealing device for a roll shaft of a roll crusher, and aims to solve the problem that dust is easy to intrude into a joint of a shaft sleeve and a shell of the roll shaft. The device comprises a shell, a roll shaft and a sealing assembly, the sealing assembly comprises a flange, a shaft sleeve and a striker plate; the flange is arranged on one side of the shell; the shaft sleeve is sleeved with the roller shaft; one end of the flange is detachably connected with the shell, and the other end abuts against the shaft sleeve; the striker plate sleeves one side, far away from the flange, of the shell; and a transition bin is formed among the striker plate, the shell and the shaft sleeve. The device aims to solve the problems of equipment failure and shutdown maintenance caused by dust entering, and the striker plate surrounds a gap between the shell and the shaft sleeve to form a transition bin. The transition bin not only can effectively block falling materials, but also can slow down the flowing speed of raised dust and prevent the raised dust from entering the box body.

Description

Technical Field

[0001] The utility model relates to the technical field of roller crusher seals, in particular to a sealing device for a roller shaft of a roller crusher. Background Art

[0002] Roller crushers are widely used in grate coolers on cement production lines, where the working environment is harsh, with a high dust concentration and a high ambient temperature. There are gaps between multiple juxtaposed rotating roller shafts and the housing. To prevent material leakage and ensure the normal operation of the roller shafts, a sealing ring structure is currently used between the shaft sleeves of the roller shafts and the wall plates of the equipment housing. The existing sealing ring is sleeved on the shaft sleeve, with its inner side in sealing contact with the shaft sleeve through packing, and its outer side fixedly connected to the housing wall plate. However, the defect of this structure is that due to the fixed setting of the sealing ring, dust still enters the internal sealing structure through the gap between the housing and the roller shaft after long-term use, resulting in material leakage and pollution of the sealing environment, and ultimately leading to shutdown for maintenance. Content of the Utility Model

[0003] The utility model provides a sealing device for a roller shaft of a roller crusher to alleviate the problem that dust easily invades the connection between the shaft sleeve of the roller shaft and the housing.

[0004] To alleviate the above technical problems, the technical solution provided by the utility model lies in:

[0005] The utility model provides a sealing device for a roller shaft of a roller crusher, comprising a housing, a roller shaft and a sealing assembly;

[0006] The sealing assembly includes a flange, a shaft sleeve and a baffle plate;

[0007] The flange is arranged on one side of the housing;

[0008] The shaft sleeve is sleeved on the roller shaft;

[0009] One end of the flange is detachably connected to the housing, and the other end abuts against the shaft sleeve;

[0010] The baffle plate is sleeved on the side of the housing away from the flange;

[0011] A transition bin is formed among the baffle plate, the housing and the shaft sleeve.

[0012] Furthermore,

[0013] There is a gap between the baffle plate and the shaft sleeve.

[0014] Furthermore,

[0015] The shaft sleeve is provided with a baffle ring in the transition bin.

[0016] Furthermore,

[0017] The material baffle is provided with an inclined surface that gradually inclines from one side of the housing to one side of the roller shaft.

[0018] Furthermore,

[0019] The inclined surface is provided with material leakage holes.

[0020] Furthermore,

[0021] A sealing packing is arranged at the connection between the bushing and the housing.

[0022] The beneficial effects of the present utility model are analyzed as follows:

[0023] This solution provides a sealing device for the roller shaft of a roller crusher on a cement production line, aiming to solve the problems of equipment failure and shutdown maintenance caused by dust entry. The sealing assembly of this device includes a flange, a bushing, and a material baffle. The flange is fixed on one side of the housing, the bushing is sleeved on the roller shaft, and the material baffle surrounds the gap between the housing and the bushing to form a transition bin. The transition bin can not only effectively block the falling materials, but also slow down the flow rate of the flying dust and prevent the flying dust from entering the interior of the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of the sealing device;

[0026] Figure 2 It is an enlarged schematic diagram of the transition bin.

[0027] ICON:

[0028] 100 - Housing;

[0029] 200 - Roller shaft;

[0030] 300 - Sealing assembly; 310 - Flange; 320 - Bushing; 321 - Baffle ring; 330 - Material baffle; 331 - Material leakage hole;

[0031] 400 - Transition bin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Due to the harsh working environment and high dust concentration of the roller crusher applied on the cement production line, in order to prevent dust from entering through the gap between the rotating shaft sleeve and the housing, a sealing packing is often sleeved on the shaft sleeve for sealing. However, since the shaft sleeve and the roller shaft are connected as a rotating mechanism, there is still a certain gap between them and the housing. During long-term operation, dust will continuously invade the shaft sleeve through this gap, ultimately leading to equipment failures and shutdowns for maintenance.

[0033] In view of this, as Figure 1 and Figure 2 shown, this solution provides a sealing device for the roller shaft of a roller crusher. This device includes a housing 100 and a roller shaft 200, and is characterized in that:

[0034] It includes a sealing assembly 300;

[0035] The sealing assembly 300 includes a flange 310, a shaft sleeve 320, and a baffle 330;

[0036] The flange 310 is arranged on one side of the housing 100;

[0037] The shaft sleeve 320 is sleeved on the roller shaft 200;

[0038] One end of the flange 310 is detachably connected to the housing 100, and the other end abuts against the shaft sleeve 320;

[0039] The baffle 330 is sleeved on the side of the housing 100 away from the flange 310;

[0040] A transition bin 400 is formed among the baffle 330, the housing 100, and the shaft sleeve 320.

[0041] Specifically, the side of the housing 100 close to the flange 310 is the inside of the box body, and the side of the housing 100 where the baffle 330 is arranged is the outside of the box body. The material continuously falls from top to bottom on the outside of the box body. The baffle 330 is arranged around the gap between the housing 100 and the shaft sleeve 320, and there is a certain interval between the baffle 330 and the housing 100 and the shaft sleeve 320 to form the transition bin 400. The transition bin 400 can effectively block the falling material, and at the same time, the space of the transition bin 400 can slow down the flow rate of the dust, preventing the dust from directly invading the inside of the box body.

[0042] As Figure 2 shown, in order to balance the air pressure on both sides inside and outside the box body and facilitate the replacement of the baffle 330, there is a gap between the baffle 330 and the shaft sleeve 320.

[0043] More preferably, a material blocking ring 321 is provided in the transition bin 400 of the shaft sleeve 320. The height of the material blocking ring 321 is much greater than the height of the gap, so that the dust invaded from the gap is blocked by the material blocking ring 321, thereby improving the protection effect of the device on the inside of the box. Of course, in order to further improve the sealing effect, multiple groups of material blocking rings 321 can also be provided, and multiple groups of baffles are provided on the side of the baffle 330 close to the transition bin 400. The baffles are arranged at intervals with the material blocking ring 321. By extending the moving path, the flow rate of the dust is slowed down to prevent the inside of the box from being polluted.

[0044] As Figure 1 shown, the baffle 330 is provided with an inclined surface that gradually inclines from one side of the housing 100 to one side of the roller shaft 200.

[0045] Specifically, the inclined surface can effectively guide the materials falling on the upper part of the baffle 330 to move downward, preventing the materials from accumulating on the upper part of the baffle 330 for a long time and causing the baffle 330 to be damaged under pressure.

[0046] As Figure 2 shown, the inclined surface is provided with a material leakage hole 331;

[0047] A sealing packing is provided at the connection between the shaft sleeve 320 and the housing 100.

[0048] Specifically, the material leakage hole 331 is arranged at the inclined surface of the baffle 330 below the roller shaft. The mixture of materials and dust entering from the gap between the baffle 330 and the shaft sleeve 320 can move downward along the inclined surface and the side wall of the shaft sleeve 320 under the action of gravity and be discharged from the material leakage hole 331. Of course, multiple material leakage holes 331 can also be provided, or a long hole, a groove or other material leakage structures can be provided to improve the discharge efficiency of the mixture of materials and dust.

[0049] This solution has at least the following beneficial effects:

[0050] This solution provides a sealing device for the roller shaft of a roller crusher on a cement production line, aiming to solve the problems of equipment failure and downtime maintenance caused by dust entry. The sealing component 300 of this device includes a flange 310, a bushing 320, and a baffle 330. The flange 310 is fixed on one side of the housing 100, the bushing 320 is sleeved on the roller shaft 200, and the baffle 330 surrounds the gap between the housing 100 and the bushing 320 to form a transition bin 400. The transition bin 400 can not only effectively block the falling materials, but also slow down the flow rate of the dust, preventing the dust from entering the interior of the box. To balance the air pressure inside and outside the box and facilitate the replacement of the baffle 330, a gap is left between the baffle 330 and the bushing 320. At the same time, a baffle ring 321 provided inside the bushing 320 can further block the dust, thereby enhancing the protection effect. To avoid damage to the baffle 330 caused by material accumulation, the baffle 330 is designed with an inclined surface inclined towards the roller shaft 320 and a leakage hole 321, so that the mixture of materials and dust moves down along the inclined surface and the side wall of the bushing 320 and is discharged.

[0051] Through multiple structural designs and optimized sealing effects, this device significantly improves the reliability and service life of the equipment.

[0052] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sealing device for a roller shaft of a roller crusher, comprising a housing (100) and a roller shaft (200), characterized in that: comprising a sealing assembly (300); The sealing assembly (300) comprises a flange (310), a shaft sleeve (320) and a material blocking plate (330); The flange (310) is arranged on one side of the housing (100); The shaft sleeve (320) is sleeved with the roller shaft (200); One end of the flange (310) is detachably connected to the housing (100), and the other end is in contact with the shaft sleeve (320); The material blocking plate (330) is sleeved on a side of the housing (100) away from the flange (310); A transition chamber (400) is formed between the material blocking plate (330), the housing (100) and the shaft sleeve (320).

2. The sealing device for the roller shaft of a roller crusher according to claim 1, characterized in that: A gap is provided between the material blocking plate (330) and the shaft sleeve (320).

3. The sealing device for the roller shaft of a roller crusher according to claim 2, characterized in that: The shaft sleeve (320) is provided with a material blocking ring (321) in the transition bin (400).

4. The sealing device for the roller shaft of a roller crusher according to claim 3, characterized in that: The material blocking plate (330) is provided with an inclined surface which gradually inclines from one side of the housing (100) toward one side of the roller shaft (200).

5. The sealing device for the roller shaft of a roller crusher according to claim 4, characterized in that: The inclined surface is provided with a material leakage hole (331).

6. The sealing device for the roller shaft of a roller crusher according to claim 5, characterized in that: A sealing packing is provided at the connection between the shaft sleeve (320) and the housing (100).

Images