Butterfly valve type waste gas circulating valve

Abstract

The utility model discloses a butterfly valve type waste gas circulating valve, relates to the technical field of valves, uses a bearing as a supporting seat, is convenient for a disc rotating shaft to rotate, can cause the bearing to be lack of lubricity after long-term use, and finally can cause the bearing to be blocked, and meanwhile, the rotating shaft of a valve main body is attached to the inner side wall of the valve main body. The butterfly valve comprises a valve main body, mounting seats and bearings, a disc is mounted in the valve main body, the rotating shaft is fixedly mounted in the disc, the mounting seats are symmetrically and fixedly mounted at the two ends of the valve main body, and the bearings are fixedly mounted at the two ends of the valve main body. And the two ends of the rotating shaft penetrate through the side wall of the valve body to the interior of the mounting base, oil can be conveniently fed into the interior of the mounting base through cooperation of the arranged bearing, the mounting base and the oil inlet pipe, and meanwhile, the position of the oil inlet pipe is inclined, so that lubricating oil can conveniently enter the bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a butterfly valve type exhaust gas circulation valve. Background Art

[0002] The butterfly valve, also known as the flap valve, is a simple regulating valve. However, when the butterfly valve is used for a long time, the rotating shaft of the disc will be worn for a long time, which may cause rotation obstruction or gaps caused by wear, causing damage to the butterfly valve. After searching, the Chinese patent authorization number CN219366186U discloses a butterfly valve type exhaust gas circulation valve, including: a housing, a rotating shaft, a needle bearing and a bushing; along the axial direction, one side of the housing is used to connect to the gear box, and the other side is used to connect to the end cover; the rotating shaft is arranged in the housing, and the end of the rotating shaft along the axial direction close to the gear box is the first end, and the end of the rotating shaft along the axial direction close to the end cover is the second end; the needle bearing is sleeved on the first end and connected to the housing; the bushing is sleeved on the second end and connected to the housing. Since the cost of the bushing is much lower than that of the needle bearing, compared with the prior art in which needle bearings are sleeved on both ends of the rotating shaft, the above technical solution has lower cost and is more economical. However, the device uses bearings as support seats and facilitates the rotation of the disc shaft. Long-term use will cause the bearings to lack lubrication and eventually cause the bearings to become blocked. At the same time, the shaft of the valve body fits against the internal side wall of the valve body, which will cause the shaft of the butterfly valve to wear, reducing the efficiency of the device. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a butterfly valve type exhaust gas circulation valve, which solves the problem that when using a bearing as a support seat and facilitating the rotation of the disc shaft, long-term use will also cause the bearing to lack lubrication, and eventually cause the bearing to become blocked. At the same time, the shaft of the valve body fits against the internal side wall of the valve body, which will also cause the shaft of the butterfly valve to be worn, thereby reducing the efficiency of the device.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a butterfly valve type exhaust gas circulation valve, including a valve body, a mounting seat and a bearing, a disc is installed inside the valve body, a rotating shaft is fixedly installed inside the disc, the mounting seat is symmetrically fixedly installed at both ends of the valve body, both ends of the rotating shaft pass through the side wall of the valve body to the inside of the mounting seat, the bearing is fixedly installed in the inner cavity of the mounting seat, and the ends of the rotating shaft are respectively fixedly connected to the inside of the bearing, the side walls of the mounting seat are fixedly installed with oil inlet pipes, the oil inlet pipes are connected with the inside of the mounting seat, a sealing plug is installed inside the top end of the oil inlet pipe, and the inner cavity diameter of the mounting seat is larger than the diameter of the rotating shaft.

[0005] Preferably, a connecting groove is provided inside the end of the inner cavity of the mounting seat, and the ends of the rotating shaft are all located inside the connecting groove and do not fit with the end side walls of the connecting groove. One end of the rotating shaft connecting driving device passes through the side wall of the mounting seat, and the end side wall of the rotating shaft is rotatably connected with a plurality of ball bearings at equal intervals. The ball bearings fit with the side walls of the connecting groove, thereby facilitating the rotation of the rotating shaft and enhancing the stability of the rotating shaft.

[0006] Preferably, connecting holes are provided inside the bottom and top side walls inside the valve body, sealing rings are fixedly installed inside the connecting holes, the rotating shafts pass through the connecting holes, and the sealing rings are slidably connected to the side walls of the rotating shaft, thereby facilitating the rotation of the rotating shaft and sealing the interior of the mounting seat.

[0007] Preferably, a sealing gasket is fixedly mounted on the outer side wall of the disc, so as to enhance the sealing performance of the valve body when the valve body is closed.

[0008] Preferably, the oil inlet pipe is arranged above the bearing, and the position of the oil inlet pipe is inclined at 45 degrees, and the lower end of the oil inlet pipe is oriented toward the bearing, so that the added lubricant can easily enter the interior of the bearing.

[0009] The utility model provides a butterfly valve type exhaust gas circulation valve. It has the following beneficial effects:

[0010] 1. When the butterfly valve type exhaust gas circulation valve is used, the oil can be easily supplied to the inside of the mounting seat through the cooperation between the provided bearing, the mounting seat and the oil inlet pipe. At the same time, the position of the oil inlet pipe is inclined, so that the lubricant can easily enter the inside of the bearing;

[0011] 2. When the butterfly valve type exhaust gas circulation valve is used, the inner cavity diameter set in the mounting seat is larger than the shaft diameter, which can prevent the side wall of the bearing and the inside of the mounting seat from wearing. At the same time, the sealing ring can also protect the shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the valve of the utility model;

[0014] Figure 3 This is a schematic diagram of the disc structure of the utility model;

[0015] Figure 4 For this utility model Figure 3 Schematic diagram of the structure of part A.

[0016] In the figure, 1-valve body, 2-mounting seat, 3-rotating shaft, 4-disc, 5-connecting hole, 6-sealing ring, 7-sealing gasket, 8-connecting groove, 9-ball, 10-bearing, 11-oil inlet pipe, 12-sealing plug. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example 1: Please refer to Figure 1-4 The embodiment of the utility model provides a butterfly valve type exhaust gas circulation valve, including a valve body 1, a mounting seat 2 and a bearing 10. A disc 4 is installed inside the valve body 1, and a rotating shaft 3 is fixedly installed inside the disc 4. The mounting seat 2 is symmetrically fixedly installed at both ends of the valve body 1, and both ends of the rotating shaft 3 pass through the side wall of the valve body 1 to the inside of the mounting seat 2. The bearing 10 is fixedly installed in the inner cavity of the mounting seat 2, and the ends of the rotating shaft 3 are respectively fixedly connected to the inside of the bearing 10. The side walls of the mounting seat 2 are fixedly installed with an oil inlet pipe 11, which is connected to the inside of the mounting seat 2. A sealing plug 12 is installed inside the top end of the oil inlet pipe 11. The inner cavity diameter of the mounting seat 2 is larger than the diameter of the rotating shaft 3. After the valve body 1 is used for a long time, in order to prevent the internal bearing 10 from lacking lubricity, the sealing plug 12 is taken out, and lubricating oil is injected into the inside of the mounting seat 2 through the oil inlet pipe 11, so that the bearing 10 can be lubricated.

[0019] Embodiment 2: In this embodiment, as Figure 1-4 As shown, a connecting groove 8 is provided inside the end of the inner cavity of the mounting seat 2, and the ends of the rotating shaft 3 are all located inside the connecting groove 8, and are not in contact with the end side walls of the connecting groove 8. One end of the rotating shaft 3 connected to the driving device passes through the side wall of the mounting seat 2, and a plurality of balls 9 are rotatably connected to the end side wall of the rotating shaft 3 at equal intervals, and the balls 9 are in contact with the side walls of the connecting groove 8. Connecting holes 5 are provided inside the bottom and top side walls of the valve body 1, and sealing rings 6 are fixedly installed inside the connecting holes 5. The rotating shaft 3 passes through the interior of the connecting hole 5, and the sealing ring 6 is slidably connected to the side wall of the rotating shaft 3. When the rotating shaft 3 rotates, the interior of the mounting seat 2 can also be sealed by the sealing ring 4.

[0020] Embodiment 3: In this embodiment, as Figure 1-4As shown, a sealing gasket 7 is fixedly installed on the outer side wall of the disc 4 , and the oil inlet pipe 11 is arranged above the bearing 10 , and the position of the oil inlet pipe 11 is inclined at 45 degrees, and the lower end of the oil inlet pipe 11 is oriented toward the bearing 10 .

[0021] It should be noted that in this embodiment, when a butterfly valve type exhaust gas recirculation valve is used, Figure 1-4 As shown, when the valve body 1 is installed and used, in order to prevent the internal bearing 10 from lacking lubricity after long-term use of the valve body 1, the sealing plug 12 is taken out and lubricating oil is injected into the interior of the mounting seat 2 through the oil inlet pipe 11, so that the bearing 10 can be lubricated. While the shaft 3 rotates, the interior of the mounting seat 2 can also be sealed through the sealing ring 4.

[0022] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0023] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A butterfly valve type exhaust gas recirculation valve, characterized in that: The invention comprises a valve body (1), a mounting seat (2) and a bearing (10); a disc (4) is mounted inside the valve body (1); a rotating shaft (3) is fixedly mounted inside the disc (4); the mounting seat (2) is symmetrically fixedly mounted at both ends of the valve body (1); both ends of the rotating shaft (3) penetrate through the side wall of the valve body (1) to the inside of the mounting seat (2); the bearing (10) is fixedly mounted in the inner cavity of the mounting seat (2); and the ends of the rotating shaft (3) are respectively fixedly connected to the inside of the bearing (10); an oil inlet pipe (11) is fixedly mounted on the side wall of the mounting seat (2); the oil inlet pipe (11) is connected to the inside of the mounting seat (2); a sealing plug (12) is mounted inside the top end of the oil inlet pipe (11); and the inner cavity diameter of the mounting seat (2) is larger than the diameter of the rotating shaft (3).

2. The butterfly valve type exhaust gas recirculation valve according to claim 1, characterized in that: A connecting groove (8) is provided inside the end of the inner cavity of the mounting seat (2), and the ends of the rotating shafts (3) are all located inside the connecting grooves (8) and do not fit the end side walls of the connecting grooves (8). One end of the rotating shaft (3) connected to the driving device passes through the side wall of the mounting seat (2), and the end side wall of the rotating shaft (3) is rotatably connected to a plurality of balls (9) at equal intervals, and the balls (9) fit the side walls of the connecting grooves (8).

3. The butterfly valve type exhaust gas recirculation valve according to claim 1, characterized in that: The bottom and top side walls of the valve body (1) are both provided with connection holes (5), the connection holes (5) are both fixedly mounted with sealing rings (6), the rotating shafts (3) pass through the connection holes (5), and the sealing rings (6) are slidably connected to the side walls of the rotating shafts (3).

4. The butterfly valve type exhaust gas recirculation valve according to claim 1, characterized in that: A sealing gasket (7) is fixedly mounted on the outer side wall of the disc (4).

5. The butterfly valve type exhaust gas recirculation valve according to claim 1, characterized in that: The oil inlet pipe (11) is arranged above the bearing (10), and the position of the oil inlet pipe (11) is inclined at 45 degrees, and the lower end of the oil inlet pipe (11) is oriented toward the bearing (10).

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