Bearing seat

Abstract

The utility model relates to the technical field of multi-shaft butterfly valve mounting devices, in particular to a bearing seat. The utility model provides a bearing seat. The bearing seat comprises a bottom plate, a sealing filling ring, a mounting sleeve and a dustproof piece, an inner round hole is formed in the bottom plate, and a reaming groove with the diameter larger than that of the inner round hole is formed in one end face of the inner round hole. The sealing filling ring is arranged in the reaming groove; and a blade shaft of the butterfly valve penetrates through the inner circular hole and is in sealing contact with the sealing filling ring. The mounting sleeve is in sealed connection with the side, provided with the reaming groove, of the bottom plate, and a mounting groove used for containing a bearing is formed in the mounting sleeve; the blade shaft penetrates through the bearing and is in interference fit with the inner ring of the bearing. And the dustproof piece is mounted on the mounting sleeve and is configured to at least shield the outer ring of the bearing and the balls. The bearing seat is easy to install, the sealing effect on the bearing can be achieved, the situation that the bearing is jammed or stuck due to dust and waste gas pollutants is prevented, the service life of butterfly valve equipment is prolonged, and the maintenance cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-axis butterfly valve installation devices, in particular to a bearing seat. Background Art

[0002] A butterfly valve is a simple regulating valve, also known as a flap valve. Butterfly valves are mainly used for the on / off control of low-pressure pipeline media. The closing part of the butterfly valve is the valve plate (also called valve flap or butterfly plate), which is a disc or rectangular plate. The valve plate is connected to the valve stem to achieve rotation, thereby controlling the opening and closing of the valve body. Since the bearing seat of large, multi-axis butterfly valves cannot be completely sealed, dust and corrosive gases can cause the valve to become stuck or jammed.

[0003] In order to improve the structural stability, some large butterfly valves are provided with bearing seats on both sides of the bearing. For example, the invention patent application with application publication number CN111365475A provides a butterfly valve with reliable sealing, including a valve body, a valve stem and a valve plate, an upper sleeve and a lower sleeve are provided on the valve body, wherein the upper sleeve is connected to the bearing sleeve and the reducer in sequence through a flange, a sealed bearing is provided in the bearing sleeve, the lower sleeve is connected to the shaft seat sleeve through a flange, a sealed bearing seat is provided in the shaft seat sleeve, the lower valve stem extends into the shaft seat sleeve and is connected to the sealed bearing seat; wherein the upper bearing sleeve and the lower shaft seat sleeve are both filled with sealing packing at the same time to achieve the sealing of the butterfly valve. However, since the sealing packing and the bearing need to be placed in the same bearing sleeve or bearing seat in advance in this implementation, it is not conducive to the assembly of the bearing sleeve or shaft seat sleeve, and it is difficult to make improvements based on the bearings leaking out of the existing butterfly valve equipment, and the applicable scenarios are limited. Based on this, the prior art still needs to be improved. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a bearing seat, which can at least solve the problem that the existing bearing seat is difficult to assemble on site.

[0005] The bearing seat of the present application includes a base plate, a sealing filling ring, a mounting sleeve and a dustproof part. The base plate is provided with an inner circular hole for the blade shaft of the butterfly valve to pass through, and an expansion groove with a diameter larger than the inner circular hole is provided on one end face of the inner circular hole. The sealing filling ring is arranged in the expansion groove and is used for sealing contact with the blade shaft. The mounting sleeve is sealingly connected to the side of the base plate where the expansion groove is arranged, and the interior of the mounting sleeve is provided with a mounting groove for placing a bearing; the bearing is used for the blade shaft to pass through and has an interference fit with the blade shaft. The dustproof part is installed on the mounting sleeve and is located on the side away from the base plate, and the dustproof part is configured to at least be able to shield the outer ring and ball of the bearing.

[0006] In some embodiments, the dustproof part includes a dustproof positioning plate; the dustproof positioning plate is an annular plate; the outer edge of the dustproof positioning plate is sealingly connected to the mounting sleeve, and the inner edge of the dustproof positioning plate extends inward to the extension surface of the outer peripheral wall of the inner ring of the bearing.

[0007] In some embodiments, the dustproof member further comprises a protective shell, which is sealingly connected to the dustproof positioning plate, and a sealing cavity is provided inside the protective shell for allowing the end of the blade shaft to be inserted.

[0008] In some embodiments, the dustproof component further includes an extension sleeve, and an inner peripheral wall of the extension sleeve is provided with a sealing ring that is in sealing contact with the blade shaft.

[0009] In some embodiments, the outer peripheral wall of the sealing filling ring is interference-fitted with the groove wall of the expansion groove, and the sealing filling ring is clearance-fitted with the bearing.

[0010] In some embodiments, the mounting sleeve is connected to the base plate via a flange.

[0011] In some embodiments, an oil filling hole is further provided on the mounting sleeve, and the oil filling hole is controlled by a bolt to have an open state and a closed state.

[0012] In some embodiments, a flange is provided on the mounting sleeve, and a top screw hole is also provided on the flange.

[0013] In some embodiments, the bearing seat further includes an external gasket, which is used to be placed between the outer ring of the bearing and the dustproof positioning plate.

[0014] In some embodiments, the sealing filling ring is a fluororubber skeleton sealing ring.

[0015] The beneficial effects of the utility model are as follows: by setting a base plate and a mounting sleeve, the bearing seat of the application can be conveniently installed on the existing equipment, that is, the base plate with the sealing filling ring is installed on the outer shell of the existing equipment, and the mounting sleeve with the bearing and the dustproof part are installed at the corresponding position of the base plate, so that the blade shaft end of the existing butterfly valve equipment can be adjusted and improved, and the sealing effect of the bearing can be achieved. There is no need to replace the entire butterfly valve equipment, and the installation is convenient. Furthermore, the bearing seat of the application can seal the bearing, prevent dust and exhaust gas pollutants from causing the bearing to become stuck or stuck, extend the practical life of the butterfly valve equipment, and save maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the disassembly of the main structure of the bearing seat provided by the utility model is shown;

[0017] Figure 2 The assembly and disassembly diagram of the bearing seat and the blade shaft provided by the utility model is shown;

[0018] Figure 3 A schematic diagram showing a situation in which the bearing seat provided by the utility model cooperates with the blade shaft;

[0019] Figure 4 A schematic diagram showing another situation in which the bearing seat provided by the utility model cooperates with the blade shaft.

[0020] Explanation of the accompanying drawings: 1. Base plate; 2. Expansion groove; 3. Threaded hole; 4. Sealing filling ring; 5. Fixing plate; 6. Blade shaft; 7. Hole; 8. Inner hole; 9. Bearing; 10. Ball; 11. Mounting sleeve; 12. Dustproof positioning plate; 13. Extension sleeve; 14. Protective shell; 15. Top screw hole; 16. Bolt; 17. Flange; 18. Oil filling hole; 19. O-ring. DETAILED DESCRIPTION

[0021] It should be understood that the embodiments of the present invention shown in the exemplary embodiments are illustrative only. Although only a few embodiments are described in detail in the present invention, it is easy for those skilled in the art to understand that multiple modifications are feasible without actually departing from the teachings of the subject matter of the present invention. Accordingly, all such modifications should be included within the scope of the present invention. Without departing from the gist of the present invention, other replacements, modifications, changes and deletions may be made to the design, operating conditions and parameters of the following exemplary embodiments.

[0022] The bearing seat provided by the utility model is suitable for protecting the bearings 9 on both sides of a large-scale, multi-axis butterfly valve. Figures 1 to 4 The bearing seat includes a base plate 1, a sealing filling ring 4, a mounting sleeve 11 and a dustproof part. Figure 3 and Figure 4 As shown, the bottom plate 1 is a square plate, and an inner circular hole 8 is provided at the center of the square plate. An expansion groove 2 with a diameter larger than that of the inner circular hole 8 is provided on one end face of the inner circular hole 8; a sealing filling ring 4 is provided in the expansion groove 2. The blade shaft 6 of the butterfly valve passes through the inner circular hole 8 and is in sealing contact with the sealing filling ring 4, and the sealing filling ring 4 can prevent the exhaust gas pollutants from passing through the inner circular hole 8 and the expansion groove 2. The mounting sleeve 11 is sealed and connected to one side of the expansion groove 2 provided on the bottom plate 1 to prevent the exhaust gas pollutants from entering the mounting sleeve 11. The mounting sleeve 11 is provided with a mounting groove for placing the bearing 9, and the outer ring of the bearing 9 is tightly matched with the groove wall of the mounting groove. The blade shaft 6 passes through the bearing 9 and is interference fit with the inner ring of the bearing 9, so that the blade shaft 6 can drive the inner ring of the bearing 9 to rotate synchronously. The dustproof part is installed on the mounting sleeve 11 and is located on the side away from the base plate 1. The dustproof part is configured to at least cover the outer ring and ball of the bearing 9. The setting of the dustproof part can be used to prevent external dust particles from entering the bearing 9 and affecting the normal use of the bearing 9.

[0023] Compared with the prior art, the present application can realize the convenient installation of the bearing seat of the present application on the existing equipment by setting the base plate 1 and the mounting sleeve 11, that is, the base plate 1 with the sealing filling ring 4 is installed on the outer shell of the existing equipment, and the mounting sleeve 11 with the bearing 9 and the dustproof part are installed at the corresponding position of the base plate 1, so that the end of the blade shaft 6 of the existing butterfly valve equipment can be adjusted and improved, and the sealing effect of the bearing 9 can be achieved, and the entire butterfly valve equipment does not need to be replaced, which is convenient for installation. Furthermore, the bearing seat of the present application can play a sealing effect on the bearing 9, prevent dust and exhaust gas pollutants from causing the bearing 9 to become stuck or stuck, extend the practical life of the butterfly valve equipment, and save maintenance costs.

[0024] In some embodiments, the dustproof member includes a dustproof positioning plate 12; the dustproof positioning plate 12 is an annular plate; the outer edge of the dustproof positioning plate 12 is sealed and connected to the mounting sleeve 11, and the inner edge of the dustproof positioning plate 12 extends inward to the extension surface of the outer peripheral wall of the inner ring of the bearing 9, so as to at least be able to shield the outer ring and the ball of the bearing 9. Due to the actual needs on site, the blade shaft 6 of the butterfly valve is divided into two situations: passing through the bearing seat and not passing through the bearing seat. The dustproof positioning plate 12 corresponding to each situation can at least shield the outer ring and the ball of the bearing 9, reducing or avoiding the influence of external dust pollutants on the bearing 9. In addition, the dustproof positioning plate 12 also has the function of limiting the installation position of the bearing 9, preventing the bearing 9 from moving in the axial direction, and improving the stability of the bearing seat.

[0025] In some embodiments, the dustproof member further includes a protective shell 14, which is sealed and connected to the dustproof positioning plate 12, and the interior of the protective shell 14 is provided with a sealed cavity allowing the end of the blade shaft 6 to be inserted. This dustproof member is used to adapt to the situation where the blade shaft 6 does not need to extend out of the bearing seat, and can isolate the space where the bearing 9 is located from the outside world, and has a better sealing effect. Figure 2 and Figure 3 As shown, the protective shell 14 is composed of an annular sleeve and a baffle for sealing an end surface of the annular sleeve. The depth of the sealing cavity can be configured according to the length of the end of the blade shaft 6 extending out of the outer shell of the butterfly valve device.

[0026] In some embodiments, the dustproof member further comprises an extension sleeve 13, and the inner peripheral wall of the extension sleeve 13 is provided with a sealing ring in sealing contact with the blade shaft 6, specifically, as Figure 4 As shown, the diameter of the extension sleeve 13 is smaller than the size of the installation sleeve 11, and the two ends of the extension sleeve 13 are connected. An annular groove is provided on the inner peripheral wall of the extension sleeve 13, and the sealing ring is stuck in the annular groove and slightly protrudes from the inner peripheral wall of the extension sleeve 13. The material is preferably a fluororubber O-type sealing ring 9. This dustproof part can adapt to the situation where the blade shaft 6 needs to extend out of the bearing seat, and the external dust and exhaust gas pollutants are isolated from the chamber where the bearing 9 is located through the sealing ring.

[0027] In some embodiments, the outer peripheral wall of the sealing filling ring 4 is interference-fitted with the groove wall of the expansion groove 2, so that the sealing filling ring 4 has a good sealing effect. The sealing filling ring 4 is clearance-fitted with the bearing 9, such as Figures 2 to 4 As shown, the size of the sealing filling ring 4 is smaller than that of the bearing 9, and since the sealing filling ring 4 does not rotate relative to the base plate 1, and the inner ring of the bearing 9 rotates with the blade shaft 6, in order to prevent the sealing filling ring 4 from interfering with the normal operation of the bearing 9, a gap is arranged between the sealing filling ring 4 and the bearing 9.

[0028] In some embodiments, the mounting sleeve 11 is connected to the base plate 1 via a flange 17. Figure 3 and Figure 4 As shown, a fixing plate 5 is welded on the outer shell of the butterfly valve device, and the blade shaft 6 extends from the hole 7 in the middle of the fixing plate 5. The four corners of the fixing plate 5 are provided with threaded holes 3. The outer edge of the mounting sleeve 11 is provided with a square flange 17, and the square flange 17 is provided with four threaded holes 3 that match the threaded holes 3 on the fixing plate 5, and the corresponding positions of the bottom plate 1 are also provided with corresponding four threaded holes 3. Four bolts 16 pass through the threaded holes on the flange 17, the bottom plate 1 and the fixing plate 5 in turn, so that the mounting sleeve 11 is sealed and connected to the bottom plate 1 and the fixing plate 5, which is convenient for installation. In the specific actual operation process, a sealing gasket can be installed between the bottom plate 1 and the mounting sleeve 11 to achieve a better sealing effect after the bottom plate 1 and the mounting sleeve 11 are tightened.

[0029] In some embodiments, the mounting sleeve 11 is further provided with an oil filling hole 18, and the oil filling hole 18 is controlled by the bolt 16 to have an open state and a closed state. Preferably, the oil filling hole 18 is located at the top of the mounting sleeve 11, and the oil filling hole 18 is a threaded hole. Under normal working conditions of the butterfly valve, the oil filling hole 18 is threaded with the standard bolt 16 and the bolt 16 is screwed on. When maintaining the equipment, the bolt 16 can be unscrewed, lubricating oil can be dripped into the inside of the bearing seat, and then the bolt 16 can be screwed on again to ensure lubrication and maintenance of the bearing 9 while preventing dust and corrosive gases from entering the bearing seat.

[0030] In some embodiments, the flange 17 on the mounting sleeve 11 is also provided with a top screw hole 15. Figure 4 As shown, the top screw hole 15 can be arranged between any two threaded holes 3 on the flange 17 on the mounting sleeve 11. When the bearing seat is disassembled, a top screw can be screwed into the top screw hole 15 to facilitate the quick separation of the bottom plate 1 and the flange 17.

[0031] In some embodiments, the bearing seat further includes an external gasket, which is used to be placed between the outer ring of the bearing 9 and the dustproof positioning plate 12. When the bearing 9 is installed, if there is a position deviation, gaskets of different thicknesses can be set between the outer ring of the bearing 9 and the dustproof positioning plate 12 to ensure the expansion clearance of the bearing 9 under high temperature conditions.

[0032] In some embodiments, the sealing filling ring 4 is a fluororubber skeleton sealing ring, which has the characteristics of oil resistance, wear resistance, high temperature resistance and long service life.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. If the present invention is modified or replaced by equivalents without departing from the spirit and scope of the present invention, it should be included in the scope of protection of the claims of the present invention.

Claims

1. A bearing seat, characterized in that: include: A bottom plate (1), the bottom plate (1) being provided with an inner circular hole (8) for a blade shaft (6) of a butterfly valve to pass through, and an expansion groove (2) having a diameter larger than that of the inner circular hole (8) being provided on one end surface of the inner circular hole (8); A sealing filling ring (4), the sealing filling ring (4) being arranged in the expansion groove (2) and used for sealing contact with the blade shaft (6); A mounting sleeve (11), the mounting sleeve (11) being sealingly connected to a side of the bottom plate (1) where the expansion groove (2) is provided, and a mounting groove for accommodating a bearing (9) is provided inside the mounting sleeve (11); the bearing (9) is used for the blade shaft (6) to pass through and is interference fit with the blade shaft (6); A dustproof part is installed on the installation sleeve (11) and is located on a side away from the base plate (1). The dustproof part is configured to at least shield the outer ring and the ball of the bearing (9).

2. The bearing seat according to claim 1, characterized in that: The dustproof part includes a dustproof positioning plate (12); the dustproof positioning plate (12) is an annular plate; the outer edge of the dustproof positioning plate (12) is sealedly connected to the mounting sleeve (11), and the inner edge of the dustproof positioning plate (12) extends inwardly to the extension surface of the outer peripheral wall of the inner ring of the bearing (9).

3. The bearing seat according to claim 2, characterized in that: The dustproof part also includes a protective shell (14), the protective shell (14) is sealedly connected to the dustproof positioning plate (12), and a sealing cavity is provided inside the protective shell (14) to allow the end of the blade shaft (6) to be inserted.

4. The bearing seat according to claim 2, characterized in that: The dustproof part also includes an extension sleeve (13), and the inner peripheral wall of the extension sleeve (13) is provided with a sealing ring which is in sealing contact with the blade shaft (6).

5. The bearing seat according to claim 1, characterized in that: The outer peripheral wall of the sealing filling ring (4) is interference-fitted with the groove wall of the expansion groove (2), and the sealing filling ring (4) is clearance-fitted with the bearing (9).

6. The bearing seat according to claim 1, characterized in that: The mounting sleeve (11) is connected to the base plate (1) via a flange (17).

7. The bearing seat according to claim 1, characterized in that: The mounting sleeve (11) is also provided with an oil filling hole (18), and the oil filling hole (18) is controlled by a bolt (16) to have an open state and a closed state.

8. The bearing seat according to claim 1, characterized in that: The installation sleeve (11) is provided with a flange (17), and the flange (17) is also provided with a top screw hole (15).

9. The bearing seat according to claim 2, characterized in that: It also includes an external gasket, which is used to be placed between the outer ring of the bearing (9) and the dustproof positioning plate (12).

10. The bearing seat according to claim 1, characterized in that: The sealing filling ring (4) is a fluororubber skeleton sealing ring.

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