Large-scale full-rotation center chute

Abstract

The utility model discloses a large-scale full-rotation center chute. The large-scale full-rotation center chute comprises a feeding chute, a feeding flange, a feeding cylinder, a discharging chute, a discharging flange, a lower gland, an upper gland, an O-shaped sealing ring, a VD sealing ring, a rubber gasket, a first felt and a second felt. A traditional structure with an inner barrel and an outer barrel is abandoned, a single-barrel structure is adopted, an external sealing mode is adopted, multiple rotary sealing is adopted outside, rotary motion is carried out through mutual abutting of the sealing ring and the gland, and the problem that the sealing effect is poor due to installation errors of the material sliding groove is solved.

Description

Technical Field

[0001] The invention relates to a material chute, in particular to a large-scale full-revolving central material chute, belonging to the technical field of bulk material transportation equipment. Background Art

[0002] The fully revolving center chute is currently widely used in the revolving transfer of bulk material transportation equipment. Its main function is to smoothly transport the materials transported by the grabbing material main equipment to the fixed receiving equipment, while ensuring that the inside of the equipment is isolated from the external environment, meeting the requirements of material transfer and sealing and environmental protection.

[0003] Conventional rotary center chute generally adopts the form of inner and outer cylinders. Although it can meet the needs of material transportation, due to its large size, the coordination of the two chutes is determined by the installation accuracy. Its parallelism and roundness are difficult to ensure its 360° full sealing. In addition, there are no conventional sealing rings on the market that can meet the sealing requirements of conventional rotary center chute, resulting in poor sealing of conventional rotary center chute, which is easy to generate dust for the transportation of dusty materials. At the same time, if the transfer space of the conventional rotary center chute is limited, the inner and outer cylinder form is also difficult to design, and it is even more difficult to ensure its sealing effect. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a large-scale full-rotation central chute to solve the problem of poor sealing caused by structural form and manufacturing and installation errors.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A large full-revolving central chute comprises a feed chute, a feed flange, a feed cylinder, a discharge chute, a discharge flange, a lower pressure cover, an upper pressure cover, an O-ring, a VD sealing ring, a rubber gasket, a first felt and a second felt. The feed flange is fixed to the lower end of the feed chute, the feed cylinder is fixed to the lower side of the feed flange, the discharge flange is fixed to the upper end of the discharge chute, the lower pressure cover is sleeved on the outer side of the feed cylinder and is detachably fixed to the upper side of the discharge flange, and the inner side of the lower pressure cover is fixed to the upper side of the discharge flange. An O-ring groove is opened on the surface, the O-ring is arranged in the O-ring groove on the inner side of the lower pressure cover, the first felt is arranged on the upper side of the rubber gasket and the first felt and the rubber gasket are arranged between the lower pressure cover and the discharge flange, the VD sealing ring is sleeved on the outer side of the feed cylinder, the upper pressure cover is arranged on the upper side of the VD sealing ring through a bolt adjustment mechanism to press the VD sealing ring between the upper pressure cover and the lower pressure cover, and the second felt is arranged on the outer side of the VD sealing ring and is located between the upper pressure cover and the lower pressure cover.

[0007] Furthermore, the lower pressure cover is an annular cover plate structure, the inner diameter of the lower pressure cover matches the outer diameter of the feed cylinder, the outer diameter of the lower pressure cover matches the outer diameter of the discharge flange, the lower pressure cover is composed of two semicircular arc-shaped lower pressure cover plates, and the lower pressure cover is detachably fixed to the upper side of the discharge flange by bolts.

[0008] Furthermore, the upper pressure cover is an annular cover plate structure, the inner diameter of the upper pressure cover matches the outer diameter of the feed cylinder, the outer diameter of the upper pressure cover is smaller than the outer diameter of the lower pressure cover, and the upper pressure cover is composed of two semicircular arc-shaped upper pressure cover plates.

[0009] Furthermore, the bolt adjustment mechanism includes multiple screws, the lower ends of the screws are fixed to the upper side of the upper pressure cover, the feed flange is provided with multiple screw holes, and the multiple screw holes are evenly spaced along the circumference of the feed flange, the feed flange is also provided with two groups of straight slots, the straight slots pass through the edge of the feed flange and are connected to the screw holes, all the straight slots in each group of straight slots are opened in the same direction, during installation, the screws are laterally inserted into the screw holes of the feed flange along the straight slots, a lower nut is provided at the lower end of the screw, and an upper nut is provided at the upper end of the screw, the upper nut and the lower nut respectively adjust the position of the upper pressure cover and lock it on the upper and lower sides of the feed flange.

[0010] Furthermore, the rubber gasket is an annular gasket with a rectangular cross-section, the inner diameter of the rubber gasket matches the inner diameter of the discharge flange, and the outer diameter of the rubber gasket matches the outer diameter of the discharge flange.

[0011] Furthermore, the first felt is an annular felt sheet, the inner diameter of the first felt matches the outer diameter of the feed cylinder, and the outer diameter of the first felt matches the outer diameter of the discharge flange.

[0012] Furthermore, a second felt annular groove is provided on the outer side of the lower side of the upper pressure cover, the second felt is an annular felt ring and the second felt is clamped in the second felt annular groove on the lower side of the upper pressure cover.

[0013] Furthermore, the lower side surface of the VD sealing ring abuts against the upper side surface of the lower pressure cover, and the upper side surface of the VD sealing ring abuts against the lower side surface of the upper pressure cover.

[0014] Compared with the prior art, the utility model has the following advantages and effects: the utility model provides a large-scale fully rotating central chute, abandons the traditional structure of inner and outer cylinders, adopts a single cylinder structure, and adopts an external sealing method. The outside adopts multiple rotating seals, and the sealing ring and the pressure cover are pressed against each other. The pressure cover and the pressure cover are half-circles to form a circular sealing structure to perform rotating motion, which solves the problems of poor sealing effect caused by installation errors of the chute and inconvenience of disassembly of the whole circle for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of a large-scale full-rotation central chute of the utility model.

[0016] Figure 2 It is a cross-sectional view of a large-scale full-rotation central chute of the utility model.

[0017] Figure 3 It is a partial enlarged view of a large-scale full-rotation central chute of the utility model.

[0018] Figure 4 It is a top view of a feed flange of a large-scale full-rotation central chute of the utility model. DETAILED DESCRIPTION

[0019] In order to elaborate on the technical scheme adopted by the utility model to achieve the predetermined technical purpose, the technical scheme in the embodiment of the utility model will be clearly and completely described in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a partial embodiment of the utility model, not all of the embodiments, and the technical means or technical features in the embodiment of the utility model can be replaced without paying creative labor. The utility model will be described in detail with reference to the drawings and in combination with the embodiments.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, a large-scale full-revolving central chute of the utility model comprises a feed chute 1, a feed flange 3, a feed cylinder 4, a discharge chute 2, a discharge flange 5, a lower pressure cover 6, an upper pressure cover 7, an O-ring 8, a VD sealing ring 9, a rubber gasket 10, a first felt 11 and a second felt 12. The feed flange 3 is fixed to the lower end of the feed chute 1, the feed cylinder 4 is fixed to the lower side of the feed flange 3, the discharge flange 5 is fixed to the upper end of the discharge chute 2, the lower pressure cover 6 is sleeved on the outer side of the feed cylinder 4 and is detachably fixed to the upper side of the discharge flange 5, and the lower pressure cover 6 is fixed to the upper side of the discharge flange 5. An O-ring groove is opened on the inner side surface of the cover 6, and the O-ring 8 is arranged in the O-ring groove on the inner side of the lower pressure cover 6. The first felt 11 is arranged on the upper side of the rubber gasket 10 and the first felt 11 and the rubber gasket 10 are arranged between the lower pressure cover 6 and the discharge flange 5. The VD sealing ring 9 is sleeved on the outside of the feed cylinder 4. The upper pressure cover 7 is arranged on the upper side of the VD sealing ring 9 through a bolt adjustment mechanism to press the VD sealing ring 9 between the upper pressure cover 7 and the lower pressure cover 6. The second felt 12 is arranged on the outside of the VD sealing ring 9 and is located between the upper pressure cover 7 and the lower pressure cover 6.

[0021] The lower gland 6 is an annular cover plate structure, the inner diameter of the lower gland 6 matches the outer diameter of the feed barrel 4, the outer diameter of the lower gland 6 matches the outer diameter of the discharge flange 5, the lower gland 6 is composed of two semicircular arc-shaped lower gland cover plates, and the lower gland 6 is detachably fixed to the upper side of the discharge flange 5 by bolts. The lower gland 6 adopts a semicircular assembly structure and can be directly installed horizontally from the side of the chute. The installation and disassembly are very convenient and quick, and the installation can be completed even when the installation space is relatively limited.

[0022] The upper gland 7 is an annular cover plate structure, the inner diameter of the upper gland 7 matches the outer diameter of the feed barrel 4, and the outer diameter of the upper gland 7 is smaller than the outer diameter of the lower gland 6, so that the outer edge of the upper gland 7 and the bolt installation position of the lower gland 6 are staggered in the horizontal direction, and the upper gland 7 is composed of two semicircular arc-shaped upper gland cover plates. The upper gland 7 adopts a semicircular assembly structure, which can be directly installed horizontally from the side of the chute, and the installation and disassembly are very convenient and quick, and the installation can be completed even when the installation space is relatively limited.

[0023] The bolt adjustment mechanism includes a plurality of screw rods 13, the lower ends of the screw rods 13 are fixed to the upper side of the upper gland 7, and a plurality of screw holes are opened on the feed flange 3 and the plurality of screw holes are evenly spaced along the circumference of the feed flange 3. Figure 4 As shown, the feed flange 3 is also provided with two groups of straight slots 14, which penetrate the edge of the feed flange 3 and are connected with the screw holes. All the straight slots 14 in each group of straight slots 14 are provided in the same direction. During installation, the screw rod is transversely inserted into the screw hole of the feed flange 3 along the straight slots 14. A lower nut is provided at the lower end of the screw rod 13, and an upper nut is provided at the upper end of the screw rod 13. The upper nut and the lower nut are respectively used to lock and fix the upper gland 7 on the upper and lower sides of the feed flange 3. By adjusting the position of the upper gland 7 by the upper and lower nuts of the screw rod, the problem of poor sealing effect caused by the parallelism error between the upper and lower sides of the VD sealing ring and the upper gland 7 and the lower gland 6 can be compensated. By adjusting the distance of the screw rod 13 at different positions, a good seal between the upper and lower sides of the VD sealing ring and the upper gland 7 and the lower gland 6 can be achieved.

[0024] The rubber gasket 10 is an annular gasket with a rectangular cross section. The inner diameter of the rubber gasket 10 matches the inner diameter of the discharge flange 5, and the outer diameter of the rubber gasket 10 matches the outer diameter of the discharge flange 5. The first felt 11 is an annular felt sheet, and the inner diameter of the first felt 11 matches the outer diameter of the feed cylinder 4, and the outer diameter of the first felt 11 matches the outer diameter of the discharge flange 5. The rubber gasket 10 ensures the tightness of the connection between the discharge flange 5 and the lower gland 6.

[0025] The outer side of the lower side of the upper gland 7 is provided with a second felt annular groove, and the second felt 12 is an annular felt ring and the second felt 12 is stuck in the second felt annular groove on the lower side of the upper gland 7. The second felt 12 can effectively prevent external dust from entering the inner side of the upper gland 7.

[0026] The lower side of the VD sealing ring 9 abuts against the upper side of the lower gland 6, and the upper side of the VD sealing ring 9 abuts against the lower side of the upper gland 7. The sealing sleeve of the VD sealing ring 9 itself is arranged on the outer side of the feed cylinder 4 to achieve axial sealing, and then the upper side and lower side of the VD sealing ring 9 are tightly pressed against the upper side of the lower gland 6 and the lower side of the upper gland 7 through the bolt adjustment mechanism, thereby achieving radial sealing.

[0027] The utility model provides a large-scale full-rotation center chute, which abandons the traditional structure of inner and outer cylinders, adopts a single cylinder structure, and adopts an external sealing method. At the same time, multiple rotary seals are adopted on the outside, such as O-rings and VD sealing rings to achieve two seals, and the first felt and the second felt to achieve two seals. The sealing ring and the gland are pressed against each other, and the gland and the gland are in a half-circle form to form a circular ring sealing structure to perform rotary motion, which solves the problems of poor sealing effect caused by the installation error of the chute and the inconvenience of full-circle disassembly for later maintenance. In addition, since the traditional structure of inner and outer cylinders is abandoned, the single cylinder structure will not generate friction between the inner and outer cylinders, so that the chute rotates without noise.

[0028] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. A large full-revolving central chute, characterized in that: It includes a feed chute, a feed flange, a feed cylinder, a discharge chute, a discharge flange, a lower pressure cover, an upper pressure cover, an O-ring, a VD sealing ring, a rubber gasket, a first felt and a second felt. The feed flange is fixed at the lower end of the feed chute, the feed cylinder is fixed at the lower side of the feed flange, the discharge flange is fixed at the upper end of the discharge chute, the lower pressure cover is sleeved on the outside of the feed cylinder and is detachably fixed to the upper side of the discharge flange, an O-ring groove is opened on the inner side surface of the lower pressure cover, the O-ring is arranged in the O-ring groove on the inner side of the lower pressure cover, the first felt is arranged on the upper side of the rubber gasket and the first felt and the rubber gasket are arranged between the lower pressure cover and the discharge flange, the VD sealing ring is sleeved on the outside of the feed cylinder, the upper pressure cover is arranged on the upper side of the VD sealing ring through a bolt adjustment mechanism to press the VD sealing ring between the upper pressure cover and the lower pressure cover, and the second felt is arranged on the outside of the VD sealing ring and is located between the upper pressure cover and the lower pressure cover.

2. A large-scale full-revolving central chute according to claim 1, characterized in that: The lower pressure cover is an annular cover plate structure, the inner diameter of the lower pressure cover matches the outer diameter of the feed cylinder, the outer diameter of the lower pressure cover matches the outer diameter of the discharge flange, the lower pressure cover is composed of two semicircular arc-shaped lower pressure cover plates, and the lower pressure cover is detachably fixed to the upper side of the discharge flange by bolts.

3. A large-scale full-revolving central chute according to claim 1, characterized in that: The upper gland is an annular cover plate structure, the inner diameter of the upper gland matches the outer diameter of the feed barrel, the outer diameter of the upper gland is smaller than the outer diameter of the lower gland, and the upper gland is composed of two semicircular arc-shaped upper gland cover plates.

4. A large-scale full-revolving central chute according to claim 3, characterized in that: The bolt adjustment mechanism includes multiple screws, the lower ends of the screws are fixed on the upper side of the upper pressure cover, the feed flange is provided with multiple screw holes, and the multiple screw holes are evenly spaced along the circumference of the feed flange, the feed flange is also provided with two groups of straight slots, the straight slots penetrate the edge of the feed flange and are connected with the screw holes, all the straight slots in each group of straight slots are opened in the same direction, during installation, the screws are horizontally inserted into the screw holes of the feed flange along the straight slots, a lower nut is provided at the lower end of the screw, and an upper nut is provided at the upper end of the screw, the upper nut and the lower nut are respectively used to adjust the position of the upper pressure cover and lock it on the upper and lower sides of the feed flange.

5. The large-scale full-revolving central chute according to claim 1, characterized in that: The rubber gasket is an annular gasket with a rectangular cross section. The inner diameter of the rubber gasket matches the inner diameter of the discharge flange, and the outer diameter of the rubber gasket matches the outer diameter of the discharge flange.

6. A large-scale full-revolving central chute according to claim 5, characterized in that: The first felt is an annular felt sheet, the inner diameter of the first felt matches the outer diameter of the feed cylinder, and the outer diameter of the first felt matches the outer diameter of the discharge flange.

7. The large-scale full-revolving central chute according to claim 1, characterized in that: A second felt annular groove is arranged on the outer side of the lower side of the upper pressure cover. The second felt is an annular felt ring and the second felt is clamped in the second felt annular groove on the lower side of the upper pressure cover.

8. The large-scale full-revolving central chute according to claim 1, characterized in that: The lower side surface of the VD sealing ring abuts against the upper side surface of the lower pressure cover, and the upper side surface of the VD sealing ring abuts against the lower side surface of the upper pressure cover.

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