Ceramic shaft sleeve

Abstract

The utility model provides a ceramic shaft sleeve which comprises a bearing base, a grinding roller shaft is installed above the bearing base, a connecting sleeve is installed on the outer side of the grinding roller shaft, a protective sleeve is installed at the bottom of the connecting sleeve, the outer side of the grinding roller shaft is sleeved with the protective sleeve, and a top cover is installed at the end, away from the protective sleeve, of the connecting sleeve. A first shaft sleeve and a second shaft sleeve are installed on the outer wall of the grinding roller shaft and located on the upper side of the grinding roller shaft, a lower gland is installed in the protective sleeve, and a first framework oil seal and a second framework oil seal are symmetrically installed on the inner wall of the lower gland; the bottom of the first framework oil seal and the bottom of the second framework oil seal are respectively provided with a blocking piece, the bottom of each blocking piece is provided with an adjusting piece, and the protective sleeve is provided with a bearing. Compared with the prior art, the ceramic shaft sleeve has the advantages that the follow-up maintenance cost of the ceramic shaft sleeve is reduced, and the adaptation degree of the blocking pieces and gaps between the framework oil seals and the grooves is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ceramic shaft sleeve belongs to roll mill shaft sleeve field. BACKGROUND

[0002] Roll mill shaft sleeve is the key part in roll mill, it directly contacts with material and bears abrasion, and its wear resistance directly influences the output of mill, power consumption and overhaul period, in prior art, when roll mill is used, the grinding roller shaft can drive ceramic shaft sleeve to rotate synchronously when high speed running, and the rotation between various components needs to smear lubricating oil, and high speed friction rotation can produce heat, so the skeleton oil seal is arranged on both sides of the ceramic shaft sleeve, the skeleton oil seal can seal the lubricating oil for the ceramic shaft sleeve, the skeleton oil seal is installed in the recess in the lower pressing cap, when the skeleton oil seal is installed in the recess in the lower pressing cap, operation space needs to be reserved, so the clearance of the recess is greater than the model of the skeleton oil seal, the excess clearance needs to be blocked by the baffle, but because the clearance between the skeleton oil seal of different models and the recess is different, different models of baffles need to be prepared to fill, which improves the maintenance cost of the ceramic shaft sleeve in the later period, so a ceramic shaft sleeve capable of reducing the maintenance cost of the subsequent ceramic shaft sleeve needs to be designed. SUMMARY

[0003] In view of the problems existing in the prior art, the utility model aims at providing a ceramic shaft sleeve to solve the problems in the background art, and reduces the maintenance cost of the subsequent ceramic shaft sleeve, and improves the fitting degree of the clearance between the baffle and the skeleton oil seal and the recess.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented by the following technical scheme: a ceramic shaft sleeve, comprising a supporting base, a grinding roller shaft is installed above the supporting base, a connecting sleeve is installed outside the grinding roller shaft, a protective sleeve is installed at the bottom of the connecting sleeve, the protective sleeve is sleeved outside the grinding roller shaft, a top cover is installed at one end of the connecting sleeve away from the protective sleeve, a first shaft sleeve and a second shaft sleeve are installed on the outer wall of the grinding roller shaft, the first shaft sleeve and the second shaft sleeve are located on the upper side of the grinding roller shaft, a lower pressing cap is installed inside the protective sleeve, first skeleton oil seals and second skeleton oil seals are symmetrically installed on the inner wall of the lower pressing cap, baffles are installed at the bottom of the first skeleton oil seals and the second skeleton oil seals, adjusting pieces are installed at the bottom of the baffles, and bearings are installed on the protective sleeve.

[0005] Further, the bearing is located on the upper side of the second shaft sleeve, and the inner wall of the bearing is attached to the outer wall of the grinding roller shaft.

[0006] Further, the first shaft sleeve and the second shaft sleeve are located inside the protective sleeve, the second shaft sleeve is located on the upper side of the first shaft sleeve, two recesses are symmetrically formed on the side of the lower cover close to the side of the grinding roller shaft, the first skeleton oil seal and the second skeleton oil seal are respectively installed in the two recesses, and the adjusting piece is installed in the recess.

[0007] Further, the first shaft sleeve is provided with a shaft sleeve nut, a gasket is installed above the shaft sleeve nut, the inner wall of the gasket is attached to the outer wall of the grinding roller shaft, and the gasket is located at the bottom of the baffle.

[0008] Further, the adjusting piece comprises a fixed base, an adjusting groove is formed in the bottom of the fixed base, a handle is rotatably installed in the adjusting groove, a moving groove is formed in the fixed base, a screw rod is installed above the handle, the screw rod is inserted into the moving groove, and a baffle is installed above the fixed base.

[0009] Further, a threaded barrel is installed at the bottom of the baffle, one end of the threaded barrel away from the baffle is inserted into the moving groove, one end of the screw rod away from the handle is installed in the threaded barrel, the inner wall of the threaded barrel is in a threaded structure, the threaded barrel and the outer wall of the screw rod are in meshing connection, a sliding groove is formed in the fixed base, the sliding groove and the moving groove are in intercommunication, a limiting ring is installed on the outer wall of the threaded barrel, and the limiting ring is inserted into the sliding groove.

[0010] The ceramic shaft sleeve has the advantages that the handle in the adjusting groove formed in the lower side of the fixed base is actuated to drive the screw rod to rotate and simultaneously drive the threaded barrel to extend out of the moving groove, so that the baffle is moved upward, the top of the baffle is attached to the bottom of the first skeleton oil seal or the second skeleton oil seal, the gap between the bottom of the first skeleton oil seal and the second skeleton oil seal and the recess is filled, the first skeleton oil seal and the second skeleton oil seal are prevented from shaking in the recess during use, the gap between the first skeleton oil seal and the second skeleton oil seal of different models and the recess can be adjusted, better installation effect is achieved, the number of baffles of different models required for subsequent maintenance of the ceramic shaft sleeve is avoided, and the maintenance cost of the ceramic shaft sleeve is reduced.

[0011] The limiting ring installed on the outer wall of the threaded barrel and the sliding groove formed in the fixed base are matched, the extension direction of the threaded barrel is limited, the baffle always keeps parallel to the fixed base, the baffle is prevented from being inclined due to the movement range of the first skeleton oil seal or the second skeleton oil seal during use, and the fixing effect of the baffle on the first skeleton oil seal and the second skeleton oil seal is improved.

[0012] The inner rings of the first skeleton oil seal and the second skeleton oil seal are matched with the second shaft sleeve, the function of sealing lubricating oil and preventing dust from entering is achieved, and the stability of the second shaft sleeve during operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments thereof as read with reference to the accompanying drawings:

[0014] Figure 1 It is a whole structure schematic view of the ceramic shaft sleeve of the present application;

[0015] Figure 2 It is an internal structure schematic view of the protective sleeve in the ceramic shaft sleeve of the present application;

[0016] Figure 3 It is an enlarged view of A in the ceramic shaft sleeve of the present application;

[0017] Figure 4 It is an internal structure schematic view of the fixed base in the ceramic shaft sleeve of the present application;

[0018] In the figure: 1, grinding roller shaft; 2, first skeleton oil seal; 3, baffle; 4, first shaft sleeve; 5, shaft sleeve nut; 6, gasket; 7, second skeleton oil seal; 8, second shaft sleeve; 9, lower pressing cover; 10, bearing; 11, supporting base; 12, top cover; 13, protective sleeve; 14, connecting sleeve; 15, recess; 16, threaded cylinder; 17, screw rod; 18, moving groove; 19, sliding groove; 20, limiting ring; 21, handle; 22, adjusting groove; 23, fixed base. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purposes and effects achieved by the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0020] Please refer to Figures 1-4The utility model provides a technical scheme: a ceramic shaft sleeve, including the support base 11, the support base 11 top is installed the mill roll shaft 1, the mill roll shaft 1 outside is installed the connecting sleeve 14, the connecting sleeve 14 bottom is installed the protective sleeve 13, the protective sleeve 13 is set up in the mill roll shaft 1 outside, the connecting sleeve 14 is installed the top cover 12 away from the protective sleeve 13 one end, the mill roll shaft 1 outer wall is installed the first shaft sleeve 4 and the second shaft sleeve 8, the first shaft sleeve 4 and the second shaft sleeve 8 are located the mill roll shaft 1 upside, the protective sleeve 13 inside is installed the lower pressing cover 9, the lower pressing cover 9 inner wall is installed the first skeleton oil seal 2 and the second skeleton oil seal 7 symmetrically, the first skeleton oil seal 2 and the second skeleton oil seal 7 bottom are installed the baffle 3, the baffle 3 bottom is installed the adjusting part, the protective sleeve 13 is installed the bearing 10, the bearing 10 is located the second shaft sleeve 8 upside, the bearing 10 inner wall and the mill roll shaft 1 outer wall are pasted, through the cooperation of the protective sleeve 13 and the connecting sleeve 14 of setting, can protect the outer wall of the mill roll shaft 1, avoid the mill roll shaft 1 in the process of high -speed operation and external friction collision, improve the stability in the process of mill roll shaft 1 operation.

[0021] Please refer to Figure 2 And Figure 3 The first shaft sleeve 4 and the second shaft sleeve 8 are located inside the protective sleeve 13, the second shaft sleeve 8 is located the first shaft sleeve 4 upside, the lower pressing cover 9 is close to the mill roll shaft 1 one side symmetrically and is provided with two recesses 15, the first skeleton oil seal 2 and the second skeleton oil seal 7 are installed in two recesses 15 respectively, the adjusting part is installed in the recess 15, the first shaft sleeve 4 is installed the shaft sleeve nut 5, the shaft sleeve nut 5 top is installed the gasket 6, the gasket 6 inner wall and the mill roll shaft 1 outer wall are pasted, the gasket 6 is located the baffle 3 bottom, through the gasket 6 of setting, when the mill roll shaft 1 rotation drives the second shaft sleeve 8, shaft sleeve nut 5 and first shaft sleeve 4 rotation, the gasket 6 can fill the gap between the first shaft sleeve 4 and the mill roll shaft 1, avoid dust etc. and enter the gap between the mill roll shaft 1 and the first shaft sleeve 4.

[0022] Please refer to Figure 4The adjusting piece comprises a fixed base 23, the bottom of the fixed base 23 is provided with an adjusting groove 22, the inside of the adjusting groove 22 is rotatably provided with a handle 21, the inside of the fixed base 23 is provided with a moving groove 18, the upper portion of the handle 21 is provided with a screw rod 17, the screw rod 17 is inserted into the moving groove 18, the fixed base 23 is provided with a baffle 3 above, the bottom of the baffle 3 is provided with a threaded cylinder 16, the end of the threaded cylinder 16 away from the baffle 3 is inserted into the moving groove 18, the end of the screw rod 17 away from the handle 21 is inserted into the inside of the threaded cylinder 16, the inner wall of the threaded cylinder 16 is provided with a threaded structure, the threaded cylinder 16 and the outer wall of the screw rod 17 are mutually engaged, the fixed base 23 is provided with a sliding groove 19, the sliding groove 19 and the inside of the moving groove 18 are interconnected, the outer wall of the threaded cylinder 16 is provided with a limiting ring 20, the limiting ring 20 is inserted into the inside of the sliding groove 19, through the cooperation of the sliding groove 19 and the limiting ring 20, the range of the baffle 3 moving up and down driven by the threaded cylinder 16 can be limited, so that the baffle 3 can always keep parallel with the fixed base 23, and the position of the first skeleton oil seal 2 and the second skeleton oil seal 7 in the groove 15 can be fixed.

[0023] Specific implementation: through rotating the handle 21 in the adjusting groove 22 under the fixed base 23, the handle 21 drives the screw rod 17 to rotate and drives the threaded cylinder 16 to extend from the inside of the moving groove 18, so that the baffle 3 is moved upward, the top of the baffle 3 is attached to the bottom of the first skeleton oil seal 2 or the second skeleton oil seal 7, the gap between the bottom of the first skeleton oil seal 2 and the second skeleton oil seal 7 and the groove 15 is filled, the shaking of the first skeleton oil seal 2 and the second skeleton oil seal 7 in the groove 15 during use is reduced, and the gap between the first skeleton oil seal 2 and the second skeleton oil seal 7 of different models and the groove 15 can be adjusted, so that better installation effect is achieved, the number of baffle 3 of different models prepared for subsequent maintenance of the ceramic shaft sleeve is avoided, the maintenance cost of the subsequent ceramic shaft sleeve is reduced, through the cooperation of the limiting ring 20 on the outer wall of the threaded cylinder 16 and the sliding groove 19 in the fixed base 23, the extension direction of the threaded cylinder 16 can be limited, the baffle 3 always keeps parallel with the fixed base 23, the baffle 3 is prevented from being inclined due to the movement of the first skeleton oil seal 2 or the second skeleton oil seal 7 during use, the fixing effect of the baffle 3 on the first skeleton oil seal 2 and the second skeleton oil seal 7 is improved, the inner ring of the first skeleton oil seal 2 and the second skeleton oil seal 7 and the second shaft sleeve 8 are mutually matched, the function of sealing the lubricating oil to prevent dust from entering is achieved, and the stability of the second shaft sleeve 8 during operation is improved.

[0024] Although the present specification is described in terms of embodiments, not every embodiment exhibits every characteristic or implements every combination of features described in the present specification. In addition, not every embodiment includes every embodiment described in the present specification. The description herein of any embodiment, including any preferred embodiment, is thus intended to be illustrative, and not restrictive. The scope of the present application is thus intended to be broad, and will be set forth in the following claims.

Claims

1. A ceramic bushing comprising a bearing seat (11), characterized in that: The supporting base (11) is provided with a grinding roller shaft (1) above, a connecting sleeve (14) is installed outside the grinding roller shaft (1), a protective sleeve (13) is installed at the bottom of the connecting sleeve (14), the protective sleeve (13) is sleeved outside the grinding roller shaft (1), a top cover (12) is installed at the end of the connecting sleeve (14) away from the protective sleeve (13), a first shaft sleeve (4) and a second shaft sleeve (8) are installed on the outer wall of the grinding roller shaft (1), the first shaft sleeve (4) and the second shaft sleeve (8) are located on the upper side of the grinding roller shaft (1), a lower pressing cover (9) is installed inside the protective sleeve (13), a first skeleton oil seal (2) and a second skeleton oil seal (7) are symmetrically installed on the inner wall of the lower pressing cover (9), a baffle (3) is installed at the bottom of the first skeleton oil seal (2) and the second skeleton oil seal (7), an adjusting piece is installed at the bottom of the baffle (3), and a bearing (10) is installed on the protective sleeve (13).

2. A ceramic bushing according to claim 1, characterized in that: The bearing (10) is located on the upper side of the second shaft sleeve (8), and the inner wall of the bearing (10) is attached to the outer wall of the grinding roller shaft (1).

3. A ceramic bushing according to claim 1, wherein: The first shaft sleeve (4) and the second shaft sleeve (8) are located inside the protective sleeve (13), the second shaft sleeve (8) is located on the upper side of the first shaft sleeve (4), two grooves (15) are symmetrically formed on the side of the lower pressing cover (9) close to the grinding roller shaft (1), the first skeleton oil seal (2) and the second skeleton oil seal (7) are installed in the two grooves (15) respectively, and the adjusting piece is installed in the groove (15).

4. A ceramic bushing according to claim 3, wherein: A shaft sleeve nut (5) is installed on the first shaft sleeve (4), a gasket (6) is installed above the shaft sleeve nut (5), the inner wall of the gasket (6) is attached to the outer wall of the grinding roller shaft (1), and the gasket (6) is located at the bottom of the baffle (3).

5. A ceramic bushing according to claim 3, wherein: The adjusting piece comprises a fixed base (23), an adjusting groove (22) is formed at the bottom of the fixed base (23), a handle (21) is rotatably installed in the adjusting groove (22), a moving groove (18) is formed in the fixed base (23), a screw rod (17) is installed above the handle (21), the screw rod (17) is inserted into the moving groove (18), and the baffle (3) is installed above the fixed base (23).

6. A ceramic bushing according to claim 5, wherein: A threaded cylinder (16) is installed at the bottom of the baffle (3), one end of the threaded cylinder (16) away from the baffle (3) is inserted into the moving groove (18), one end of the screw rod (17) away from the handle (21) is installed in the threaded cylinder (16), the inner wall of the threaded cylinder (16) is in a threaded structure, the threaded cylinder (16) and the outer wall of the screw rod (17) are engaged with each other, a sliding groove (19) is formed in the fixed base (23), the sliding groove (19) and the moving groove (18) are in communication, a limiting ring (20) is installed on the outer wall of the threaded cylinder (16), and the limiting ring (20) is inserted into the sliding groove (19).

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