Bearing for anti-explosion electric cut-off butterfly valve

Abstract

The utility model discloses a bearing for an explosion-proof electric cut-off butterfly valve, which comprises an outer disc assembly, an inner disc assembly is connected inside the outer disc assembly, a ring body assembly for sealing is arranged between the inner disc assembly and the outer disc assembly, the inner disc assembly comprises an inner ring assembly, an inner cavity for storing lubricating grease is arranged in the inner ring assembly, and the inner ring assembly is connected with the inner disc assembly. The inner disc assembly further comprises a curved ring, a plurality of cylindrical holes are formed in the curved ring in a penetrating mode, and the curved ring is connected with plugging pieces used for controlling the lubricating grease to be sent out in the cylindrical holes. According to the bearing for the explosion-proof electric cut-off butterfly valve, lubricating grease is put into the inner cavity of the inner ring assembly in advance through the cylindrical holes formed in the inner ring assembly, and the cylindrical holes are blocked through paraffin, so that the lubricating grease in the inner cavity can be released after the smeared lubricating grease is consumed by the bearing for the explosion-proof electric cut-off butterfly valve; and the lubricating effect is obtained again, so that the practicability of the bearing for the anti-explosion electric cut-off butterfly valve is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of explosion -proof electric cut -out butterfly valve equipment, concretely is a bearing for explosion -proof electric cut -out butterfly valve. BACKGROUND

[0002] The butterfly valve is also called flap valve, is a simple structure regulating valve, can be used for controlling air, water, steam and various corrosive medium etc. each type fluid flow. The electric valve door prime mover is electric motor, generally adopts the three -phase asynchronous motor of special design, the common structure form has the combination of worm gear transmission and spur gear transmission, and the electric butterfly valve needs to use the bearing to reduce the friction of relative rotation in the inside when using.

[0003] The prior art discloses a bearing for explosion -proof electric cut -out butterfly valve, belongs to the technical field of explosion -proof electric cut -out butterfly valve equipment in metallurgical industry. The technical scheme is: containing bearing body and connecting seat, the bearing body is sleeved on the drive shaft and is positioned on the connecting seat, the surface of the bearing body is provided with a plurality of storage holes communicated with the inner cavity of the bearing body and arranged uniformly, the lubricating grease enters between the bearing body and the drive shaft through the storage hole, the cross section of the storage hole is circular, and the storage hole is provided with sealing packing close to the drive shaft. The utility model has the advantages of good lubricating performance, can ensure that the drive shaft rotates stably, and has long service life.

[0004] In the above patent, the lubricating grease is added to the bearing and the drive shaft to achieve good lubricating performance of the bearing, ensure smooth rotation of the drive shaft and long service life. However, this method of adding lubricating grease can only be added once before the bearing is installed, which will cause the bearing to lose lubricating performance after the lubricating grease is consumed. Adding lubricating grease again requires disassembling the bearing, which is not convenient for users. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the shortcomings of prior art, and provides a bearing for explosion -proof electric cut -out butterfly valve, which solves the above technical problems.

[0006] In order to achieve the above object, the utility model is through the following technical scheme to realize: a bearing for explosion -proof electric cut -off butterfly valve, including outer disc subassembly, the inner disc subassembly is connected in the outer disc subassembly, the ring body subassembly for sealing is installed between the inner disc subassembly with The outer disc subassembly, the inner disc subassembly includes inner ring subassembly, the inner cavity for depositing grease is opened in the inner ring subassembly, the inner disc subassembly still includes curved ring, a plurality of cylindrical holes are opened and penetrated on the curved ring, the curved ring is connected with the plugging piece for controlling the grease delivery in the cylindrical hole. The curved ring is connected with the plugging piece for controlling the grease delivery in the cylindrical hole, so that the bearing for explosion -proof electric cut -off butterfly valve can release the grease, which greatly improves the practicality of the bearing for explosion -proof electric cut -off butterfly valve.

[0007] Further, the curved ring is fixedly installed with an inner support ring at both ends, the outer disc subassembly includes a support ring, and the support ring is matched with the inner support ring to support and fix the ring body subassembly. The support ring is matched with the inner support ring to support and fix the ring body subassembly, so that the internal structure of the bearing for explosion -proof electric cut -off butterfly valve is more firm and reliable, and the stability of the bearing for explosion -proof electric cut -off butterfly valve is improved.

[0008] Further, the ring body subassembly includes a sealing ring, and the sealing ring is fixedly installed with an insert for entering the support ring. The sealing ring is fixedly installed with the insert for entering the support ring, so that the internal structure of the bearing for explosion -proof electric cut -off butterfly valve can be combined correspondingly, and the safety of the bearing for explosion -proof electric cut -off butterfly valve is improved.

[0009] Further, a vertical groove is opened in the support ring, an inner ring groove is opened at the middle position of the support ring, the inner ring groove is communicated with the vertical groove, the insert is inserted into the vertical groove and can move around the inner ring groove. The insert is inserted into the vertical groove and can move around the inner ring groove, so that the integration of the internal structure of the bearing for explosion -proof electric cut -off butterfly valve is improved.

[0010] Further, the inner disc subassembly further includes a fixing frame, the inner ring of the fixing frame is fixed on the outer ring of the inner ring subassembly, and a plurality of rotating balls are rotatably arranged in the fixing frame. The rotating balls are rotatably arranged in the fixing frame, so that the rotating balls can stably rotate in the fixing frame, and the smoothness of the internal devices of the bearing for explosion -proof electric cut -off butterfly valve is improved.

[0011] Further, the support ring and the inner support ring are made of rubber. The support ring and the inner support ring are made of rubber, so that the rotating balls can enter the bearing without interference, and the practicality of the bearing for explosion -proof electric cut -off butterfly valve is improved.

[0012] Further, the sealing member is made of paraffin wax which melts when heated. The sealing member is made of paraffin wax which melts when heated, so that the user does not need to perform subsequent operations, greatly improving the convenience of use of the bearing for the explosion-proof electric cut-off butterfly valve. Advantages

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The utility model discloses a plurality of cylindrical holes are set up in the inner ring assembly, and the cylindrical holes are sealed by paraffin wax, so that the bearing for the explosion-proof electric cut-off butterfly valve can release the lubricating grease in the inner cavity when the lubricating grease is consumed, and the lubricating effect is obtained again, greatly improving the practicability of the bearing for the explosion-proof electric cut-off butterfly valve. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the bearing for the explosion-proof electric cut-off butterfly valve of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic view of the inner disc assembly and the outer disc assembly of the utility model;

[0017] Figure 3 It is a partial enlarged three-dimensional structural schematic view of A of the utility model;

[0018] Figure 4 It is a three-dimensional structural schematic view of the ring body assembly of the utility model;

[0019] Figure 5 It is a three-dimensional structural schematic view of the inner ring assembly of the utility model.

[0020] In the drawing: inner disc assembly 1, ring body assembly 2, outer disc assembly 3, inner ring assembly 11, fixed frame 12, rotating ball 13, outer ring 31, support ring 32, vertical groove 321, inner ring groove 322, insertion piece 21, sealing ring 22, inner cavity 111, inner support ring 112, sealing member 113, curved ring 114. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model will be described below in connection with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] EMBODIMENT

[0023] The following will be combined with the drawings Figure 1 -APPENDIXFigure 5 The application is further described in detail. The bearing for explosion-proof electric cut-off butterfly valve comprises an outer disc assembly 3, an inner disc assembly 1 connected inside the outer disc assembly 3, and a ring assembly 2 for sealing installed between the inner disc assembly 1 and the outer disc assembly 3. The inner disc assembly 1 comprises an inner ring assembly 11, an inner cavity 111 for storing lubricating grease is formed in the inner ring assembly 11, and the inner disc assembly 1 further comprises a curved ring 114, a plurality of cylindrical holes are formed in the curved ring 114, a blocking piece 113 for controlling the delivery of lubricating grease is connected in the cylindrical hole, inner support rings 112 are fixedly installed at both ends of the curved ring 114, the outer disc assembly 3 comprises a support ring 32, the support ring 32 cooperates with the inner support rings 112 to support and fix the ring assembly 2, the ring assembly 2 comprises a sealing ring 22, an insertion piece 21 for entering the support ring 32 is fixedly installed on the sealing ring 22, a vertical groove 321 is formed in the support ring 32, an inner ring groove 322 is formed at the middle position of the support ring 32, the inner ring groove 322 is communicated with the vertical groove 321, the insertion piece 21 is inserted into the vertical groove 321 and can move around the inner ring groove 322, and the inner disc assembly 1 further comprises a fixed frame 12, the inner circle of the fixed frame 12 is fixed on the outer circle of the inner ring assembly 11, and a plurality of rotating balls 13 are rotatably placed in the fixed frame 12. The support ring 32 and the inner support rings 112 are made of rubber material, and the blocking piece 113 is made of paraffin wax which can melt when heated.

[0024] Since the blocking piece 113 is made of paraffin wax, when the lubricating grease applied on the bearing for explosion-proof electric cut-off butterfly valve is consumed, a large amount of heat is generated during the mutual operation of the bearing and the butterfly valve. At this time, the heat can make the paraffin wax melt, the melted paraffin wax is attached to the fixed frame 12 and the curved ring 114, so that the fixed frame 12 and the curved ring 114 are fixed more firmly, and the paraffin wax in the inner cavity 111 is thrown out to the rotating balls 13 and the curved ring 114 due to centrifugal force, so that the bearing for explosion-proof electric cut-off butterfly valve can obtain lubricating grease again.

[0025] The width of the insertion piece 21 is consistent with the width of the vertical groove 321, so that the insertion piece 21 can enter the inner ring groove 322 along the vertical groove 321 from top to bottom, and the height of the protruding part of the insertion piece 21 is consistent with the height of the inner ring groove 322, so that the insertion piece 21 can rotate around the inner ring groove 322 when it enters the inner ring groove 322, so as to stably install the sealing ring 22 on the support ring 32.

[0026] Since the support ring 32 and the inner support rings 112 are made of rubber material which can be deformed, the rotating balls 13 can be installed into the fixed frame 12 without being interfered by the support ring 32 and the inner support rings 112.

[0027] The working principle of the utility model is described as follows: before the explosion-proof electric cut-off butterfly valve bearing is used, the plugging piece 113 has not been filled, the user fills the lubricating grease into the inner cavity 111 through the cylindrical hole on the curved ring 114 by injection, then the user fills the plugging piece 113 into the cylindrical hole on the curved ring 114 and injects the lubricating grease between the rotating ball 13 and the inner ring assembly 11, then the user inserts the sealing ring 22 into the inner ring groove 322 along the vertical groove 321 through the inserting piece 21 and rotates, at this time, the ring body assembly 2 is sealed on the support ring 32 and the inner support ring 112, then the user can install the whole explosion-proof electric cut-off butterfly valve bearing on the explosion-proof electric cut-off butterfly valve, when the explosion-proof electric cut-off butterfly valve is used, the rotating ball 13 rotates on the fixed frame 12, when the lubricating grease on the fixed frame 12 and the rotating ball 13 is consumed, the heat generated by the relative friction makes the plugging piece 113 of the paraffin material melt, at this time, the lubricating grease in the inner cavity 111 is thrown onto the rotating ball 13 due to the centrifugal force, so that the explosion-proof electric cut-off butterfly valve bearing is filled with the lubricating grease again, which greatly improves the practicability of the explosion-proof electric cut-off butterfly valve bearing.

[0028] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

Claims

1. A bearing for an explosion-proof electrically operated butterfly valve, characterized in that The application relates to a sealing device for a bearing, which comprises an outer disc assembly (3), an inner disc assembly (1) connected inside the outer disc assembly (3), and a ring assembly (2) for sealing installed between the inner disc assembly (1) and the outer disc assembly (3), wherein the inner disc assembly (1) comprises an inner ring assembly (11) with an inner cavity (111) for storing lubricating grease, and the inner disc assembly (1) further comprises a curved ring (114) with a plurality of cylindrical holes penetrating through the curved ring (114), and the curved ring (114) is connected with a plugging member (113) for controlling the delivery of the lubricating grease in the cylindrical holes.

2. The bearing for use in the electrically operated cut-off butterfly valve according to claim 1, characterized in that: The curved ring (114) is fixedly installed with an inner support ring (112) at both ends, the outer disc assembly (3) comprises a support ring (32) matched with the inner support ring (112) for supporting and fixing the ring assembly (2).

3. The bearing for use in the electrically operated cut-off butterfly valve according to claim 2, characterized in that: The ring assembly (2) comprises a sealing ring (22) fixedly installed with an insertion member (21) for entering the support ring (32).

4. The bearing for use in the electrically operated cut-off butterfly valve according to claim 3, characterized in that: The support ring (32) is internally provided with a vertical groove (321), and an inner ring groove (322) is formed in the middle of the support ring (32) and communicated with the vertical groove (321), the insertion member (21) is inserted into the vertical groove (321) and can move around the inner ring groove (322).

5. The bearing for use in the electrically operated cut-off butterfly valve according to claim 1, wherein: The inner disc assembly (1) further comprises a fixing frame (12) fixedly installed on the outer ring of the inner ring assembly (11), and a plurality of rotating balls (13) are rotatably arranged in the fixing frame (12).

6. The bearing for use in the electrically operated cut-off butterfly valve according to claim 2, wherein: The support ring (32) and the inner support ring (112) are made of rubber.

7. The bearing for use in the electrically operated cut-off butterfly valve according to claim 1, wherein: The plugging member (113) is made of paraffin which can melt when heated.

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