Valve mechanism for waste gas treatment equipment

Abstract

The utility model discloses a valve mechanism for waste gas treatment equipment, which comprises a valve cylinder, a valve plate, a rotating shaft and a first driving device for driving the rotating shaft to rotate, shaft cylinders matched with the rotating shaft are arranged on two sides of the valve cylinder, a cavity with the diameter larger than that of the rotating shaft is arranged on the outer side of each shaft cylinder, and a graphite packing is arranged in each cavity. A pressing barrel pressed on the graphite packing is arranged on the outer side of the shaft barrel and is fixed on the shaft barrel through a connecting piece. According to the utility model, the graphite packing is arranged between the shaft barrel and the rotating shaft, and is pressed by the pressing barrel, so that the stone mill packing is stressed and deformed to fill a gap between the rotating shaft and the shaft barrel, the sealing performance of the rotating shaft is improved, and waste gas is prevented from leaking to the atmosphere.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a valve mechanism for waste gas treatment equipment. Background Art

[0002] The valve mechanism of the waste gas treatment equipment plays a role in controlling the air volume during the operation of the equipment. Most of the existing waste gas treatment equipment is a flap valve. When working, due to the poor sealing of the rotating shaft of the flap valve, some untreated waste gas will leak into the atmosphere at the rotating shaft, causing environmental pollution. It is necessary to optimize the sealing of the valve. Utility Model Content

[0003] The purpose of the utility model is to avoid the deficiencies of the prior art and provide a valve mechanism for exhaust gas treatment equipment, thereby effectively solving the deficiencies in the prior art.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a valve mechanism for exhaust gas treatment equipment, including a valve cylinder, a valve plate, a rotating shaft and a first driving device for driving the rotating shaft to rotate, shaft cylinders are arranged on both sides of the valve cylinder to cooperate with the rotating shaft, a cavity with a diameter larger than the rotating shaft is arranged on the outside of the shaft cylinder, a graphite packing is arranged in the cavity, a pressure cylinder pressed on the graphite packing is arranged on the outside of the shaft cylinder, and the pressure cylinder is fixed to the shaft cylinder through a connecting piece.

[0005] Furthermore, fixing ears are provided on the outer side of the shaft cylinder and the pressure cylinder, and the connecting member is a bolt connecting the shaft cylinder and the pressure cylinder.

[0006] Furthermore, the rotating shaft includes a left shaft and a right shaft arranged on both sides of the valve plate, the inner sides of the left shaft and the right shaft are both provided with mounting grooves to cooperate with the valve plate, and the inner sides of the left shaft and the right shaft are respectively connected to both sides of the valve plate by bolts.

[0007] Furthermore, a left bearing and a right bearing are respectively provided on both sides of the valve cylinder. The left bearing and the first driving device are connected to the valve cylinder through a first mounting seat, and the right bearing is connected to the shaft cylinder on the right side of the valve cylinder through a second mounting seat.

[0008] Further, the left shaft includes a left shaft rod and a left shaft sleeve, the left shaft rod cooperates with the first drive device and the left bearing, the left shaft sleeve cooperates with the valve plate, the left shaft rod and the left shaft sleeve cooperate through a key, the left shaft sleeve is provided with a left-rotating groove to cooperate with the pressure cylinder on the left side, and the pressure cylinder on the left side can be rotatably sleeved in the left-rotating groove, and the right shaft includes a right shaft rod and a right shaft sleeve, the right shaft rod cooperates with the right bearing, the right shaft sleeve cooperates with the valve plate, the right shaft rod and the right shaft sleeve cooperate through a key, the right shaft sleeve is provided with a right-rotating groove to cooperate with the pressure cylinder on the right side, and the pressure cylinder on the right side can be rotatably sleeved in the right-rotating groove.

[0009] The above technical scheme of the utility model has the following beneficial effects: the utility model arranges graphite packing between the shaft cylinder and the rotating shaft, and presses the graphite packing by the pressing cylinder, so that the stone mill packing is deformed by force to fill the gap between the rotating shaft and the shaft cylinder, thereby improving the sealing of the rotating shaft and preventing exhaust gas from leaking into the atmosphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0011] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0012] Figure 3 for Figure 2 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0013] The following is a detailed description of the preferred implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0014] In the description of the present utility model, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0015] like Figure 1-3As shown, a valve mechanism for exhaust gas treatment equipment in this embodiment includes a valve cylinder 1, a valve plate 2, a rotating shaft 3 and a first driving device 4 that drives the rotating shaft 3 to rotate. The two sides of the valve cylinder 1 are matched with the rotating shaft 3 to be provided with shaft cylinders 5, the outer side of the shaft cylinder 5 is provided with a cavity with a diameter larger than the rotating shaft 3, a graphite packing 6 is provided in the cavity, and a pressure cylinder 7 pressed on the graphite packing 6 is provided on the outer side of the shaft cylinder 5, and the pressure cylinder 7 is fixed to the shaft cylinder 5 through a connecting piece; in this embodiment, the first driving device 4 is a reduction motor, and the valve cylinder 1 is provided with a shaft cylinder 5 at the bottom of the shaft cylinder 5. Two semi-annular straps (not shown in the figure) are arranged on both sides of the valve plate 2, and semi-annular sealing rings (not shown in the figure) are arranged on both sides of the valve plate 2 to cooperate with the straps. When the valve plate 2 is closed, the sealing ring and the straps cooperate to perform sealing; the millstone packing 6 is arranged between the shaft cylinder 5 and the rotating shaft 3. After the pressing cylinder 7 is fixed on the shaft cylinder 5, the pressing cylinder 7 compresses the millstone packing 6, so that the millstone packing 6 is deformed by force to fill the gap between the rotating shaft 3 and the shaft cylinder 5, thereby improving the sealing performance at the rotating shaft 3 and preventing the exhaust gas from leaking into the atmosphere;

[0016] Preferably, fixing ears 8 are provided on the outer side of the shaft cylinder 5 and the pressure cylinder 7, and the connecting member is a bolt connecting the shaft cylinder 5 and the pressure cylinder 7, and the pressure cylinder 7 is fixed to the shaft cylinder 5 by the bolts;

[0017] Preferably, the rotating shaft 3 includes a left shaft 31 and a right shaft 32 arranged on both sides of the valve plate 2. The inner sides of the left shaft 31 and the right shaft 32 are both provided with mounting grooves 33 to cooperate with the valve plate 2. The inner sides of the left shaft 31 and the right shaft 32 are respectively connected to the two sides of the valve plate 2 by bolts. After long-term use, the valve plate 2 is thin and is prone to aging, damage or deformation. The traditional valve is an integrated arrangement of the valve plate 2 and the rotating shaft 3. If the valve plate 2 is to be replaced, the rotating shaft 3 needs to be replaced together, which wastes resources. In this embodiment, the left shaft 31 and the right shaft 32 can be disassembled on the valve plate 2. When the valve plate 2 needs to be replaced, the bolts on the inner sides of the left shaft 31 and the right shaft 32 can be removed to separate the left shaft 31 and the right shaft 32 from the valve plate 2, so that the valve plate 2 can be removed and replaced, saving resources.

[0018] Preferably, a left bearing 311 and a right bearing 321 are respectively provided on both sides of the valve cylinder 1, the left bearing 311 and the first driving device 4 are connected to the valve cylinder 1 through the first mounting seat 312, and the right bearing 321 is connected to the shaft cylinder 5 on the right side of the valve cylinder 1 through the second mounting seat 322; during the replacement of the valve plate 2, after the left shaft 31 and the right shaft 32 are disconnected from the valve plate 2, the first mounting seat 312 and the second mounting seat 322 can be removed, and then the left shaft 31 and the right shaft 32 can be pulled out to both sides of the valve plate 2, so that the valve plate 2 can be separated from the mounting grooves 33 of the left shaft 31 and the right shaft 32, so that the valve plate 2 can be replaced;

[0019] Preferably, the left shaft 31 includes a left shaft rod 313 and a left shaft sleeve 314, the left shaft rod 313 cooperates with the first drive device 4 and the left bearing 311, the left shaft sleeve 314 cooperates with the valve plate 2, the left shaft rod 313 and the left shaft sleeve 314 cooperate through a key, the left shaft sleeve 314 cooperates with the left pressure cylinder 7 to be provided with a left rotation groove 315, the left pressure cylinder 7 on the left side is rotatably sleeved in the left rotation groove 315, the right shaft 32 includes a right shaft rod 323 and a right shaft sleeve 324, the right shaft rod 323 cooperates with the right bearing 321, the right shaft sleeve 324 cooperates with the valve plate 2, the right shaft rod 323 and the right shaft sleeve 324 cooperate through a key, the right shaft sleeve 324 cooperates with the right pressure cylinder 7 to be provided with a right The pressing cylinder 7 on the right side is rotatably sleeved in the right rotating groove 325; during the replacement of the valve plate 2, the pressing cylinders 7 on the left and right sides can be removed, and pulling the pressing cylinder 7 on the left side can drive the left shaft sleeve 314 to be pulled outward, and the left shaft sleeve 314 and the left shaft rod 313 move axially relative to each other, thereby causing the left shaft sleeve 314 to be disconnected from the valve plate 2. Similarly, pulling the pressing cylinder 7 on the right side can drive the right shaft sleeve 324 to be pulled outward, and the right shaft sleeve 324 and the right shaft rod 323 move relative to each other, thereby causing the right shaft sleeve 324 to be disconnected from the valve plate 2. The valve plate 2 can be replaced without disassembling the first mounting seat 312 and the second mounting seat 322, which is convenient for operation.

[0020] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A valve mechanism for waste gas treatment equipment, characterized in that: It includes a valve cylinder, a valve plate, a rotating shaft and a first driving device for driving the rotating shaft to rotate. Shaft cylinders are arranged on both sides of the valve cylinder to cooperate with the rotating shaft. A cavity with a diameter larger than the rotating shaft is arranged on the outside of the shaft cylinder. A graphite packing is arranged in the cavity. A pressure cylinder is arranged on the outside of the shaft cylinder to press on the graphite packing. The pressure cylinder is fixed to the shaft cylinder through a connecting piece.

2. A valve mechanism for exhaust gas treatment equipment according to claim 1, characterized in that: The outer side of the shaft cylinder and the pressure cylinder are both provided with fixing ears, and the connecting piece is a bolt connecting the shaft cylinder and the pressure cylinder.

3. The valve mechanism for exhaust gas treatment equipment according to claim 1, characterized in that: The rotating shaft includes a left shaft and a right shaft arranged on both sides of the valve plate. The inner sides of the left shaft and the right shaft are both provided with mounting grooves to match the valve plate. The inner sides of the left shaft and the right shaft are respectively connected to both sides of the valve plate by bolts.

4. A valve mechanism for exhaust gas treatment equipment according to claim 3, characterized in that: A left bearing and a right bearing are respectively arranged on both sides of the valve cylinder. The left bearing and the first driving device are connected to the valve cylinder through a first mounting seat, and the right bearing is connected to the shaft cylinder on the right side of the valve cylinder through a second mounting seat.

5. A valve mechanism for exhaust gas treatment equipment according to claim 4, characterized in that: The left shaft includes a left shaft rod and a left shaft sleeve, the left shaft rod cooperates with the first drive device and the left bearing, the left shaft sleeve cooperates with the valve plate, the left shaft rod and the left shaft sleeve cooperate through a key, the left shaft sleeve is provided with a left-rotating groove to cooperate with the pressure cylinder on the left side, and the pressure cylinder on the left side can be rotatably sleeved in the left-rotating groove, the right shaft includes a right shaft rod and a right shaft sleeve, the right shaft rod cooperates with the right bearing, the right shaft sleeve cooperates with the valve plate, the right shaft rod and the right shaft sleeve cooperate through a key, the right shaft sleeve is provided with a right-rotating groove to cooperate with the pressure cylinder on the right side, and the pressure cylinder on the right side can be rotatably sleeved in the right-rotating groove.

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