Shaft sealing device of rotating shaft mixer

Abstract

The utility model relates to the technical field of rotating shaft mixers, in particular to a shaft sealing device of a rotating shaft mixer. Comprising sealing end covers, sealing rings, shaft sleeves and sealing glands, the shaft sleeve is arranged on the rotating shaft in a sleeving manner and is positioned at a shell of the rotating shaft mixer; the outer side of the sealing end cover is fixedly connected to the side wall of a machine shell of the rotating shaft mixer, and the inner side of the sealing end cover is sleeved outside the shaft sleeve but not in contact with the shaft sleeve. The outer side of the sealing gland is fixedly connected to the sealing end cover, and the inner side of the sealing gland sleeves the shaft sleeve but does not make contact with the shaft sleeve. The inner wall of the sealing ring is in contact with the shaft sleeve; the sealing ring is placed in a groove of the sealing end cover and is pressed and fixed through the sealing gland. And dust in the shell is prevented from overflowing to pollute the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating shaft mixers, and particularly relates to a shaft sealing device for a rotating shaft mixer. Background Technique

[0002] A mixer is a mechanical device that uses mechanical force, gravity, etc. to uniformly mix two or more materials. During the mixing process, the contact surface area of the materials can also be increased to promote chemical reactions; physical changes can also be accelerated. Large mixers can mix several granular materials with a size of ≤ 80 mm in a certain proportion and then send them to the next process or load them onto vehicles and transport them elsewhere. It is commonly used in the coking plant, thermal power plant for pulverized coal mixing; sludge treatment for mixing and producing organic fertilizers; and mixing materials in the dust removal system or ash bunker system of a thermal power plant, etc.

[0003] The rotating shaft mixer has a horizontal structure, and the axis of the rotating shaft with evenly distributed mixing paddles in the axial direction is horizontally installed in the casing. Along the axial direction, multiple feeding ports are provided at the top of one end of the casing, and a discharging port is provided at the bottom of the other end. Stirring and mixing are carried out while transporting the materials. However, the existing rotating shaft mixer does not have a sealing structure at the place where the rotating shaft extends out of the casing, resulting in the dust in the casing spilling out and polluting the environment. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a shaft sealing device for a rotating shaft mixer to avoid the dust in the casing spilling out and polluting the environment.

[0005] In order to achieve the above purpose, the utility model is realized by adopting the following technical solutions:

[0006] A shaft sealing device for a rotating shaft mixer includes a sealing end cover, a sealing ring, a shaft sleeve, and a sealing gland; the shaft sleeve is sleeved on the rotating shaft, and the shaft sleeve is located at the casing of the rotating shaft mixer; the outer side of the sealing end cover is fixedly connected to the side wall of the casing of the rotating shaft mixer, and the inner side is sleeved outside the shaft sleeve but does not contact the shaft sleeve; the outer side of the sealing gland is fixedly connected to the sealing end cover, and the inner side is sleeved outside the shaft sleeve but does not contact the shaft sleeve; the sealing ring is sleeved on the shaft sleeve, and the inner wall of the sealing ring contacts the shaft sleeve; the sealing ring is placed in the groove of the sealing end cover and is fixed by being pressed tightly by the sealing gland.

[0007] Further, the outer side of the sealing end cover is fixedly connected to the side wall of the casing of the rotating shaft mixer by bolts.

[0008] Further, the outer side of the sealing gland is fixedly connected to the sealing end cover by bolts.

[0009] Further, the sealing ring is made of asbestos packing.

[0010] Compared with the prior art, the utility model at least has the following technical effects or advantages:

[0011] 1. The sealing end cover of the present utility model is fixedly connected to the side wall of the casing of the rotating shaft mixer, the sealing gland is fixedly connected to the sealing end cover, the sealing ring is sleeved on the shaft sleeve, and the inner wall of the sealing ring contacts the shaft sleeve. The sealing ring seals the place where the rotating shaft passes through the casing, and the sealing end cover and the sealing gland axially and circumferentially fix the sealing ring. It can prevent the dust inside the casing from overflowing and polluting the environment.

[0012] 2. The sealing ring of the present utility model adopts asbestos packing, which has good sealing performance, lubricity and extreme resistance to media.

[0013] 3. The sealing end cover and the casing of the present utility model are bolt-connected, and the sealing gland and the sealing end cover are bolt-connected, which is convenient for replacing the sealing ring during maintenance. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model.

[0015] Figure 2 is a schematic structural diagram of the working state of the present utility model.

[0016] Figure 3 is Figure 2 a partial enlarged view of

[0017] In the figure:

[0018] 1 - Sealing end cover 2 - Sealing ring 3 - Shaft sleeve 4 - Sealing gland 5 - Rotating shaft 6 - Casing 7 - Bearing seat 8 - Bolt 9 - Nut 10 - Elastic washer 11 - Flat washer 12 - Groove Detailed Embodiment

[0019] The following details the embodiments of the present utility model. To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way restrictive of the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. 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.

[0022] In the description of the present utility model, it should be noted that the terms used herein are only for describing specific embodiments, rather than intending to limit the exemplary embodiments according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be clear that for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0024] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above terms have no special meaning, so it should not be construed as a limitation on the protection scope of the present utility model.

[0025]

Embodiment

[0026] As Figure 1 , Figure 2 , Figure 3 shown, a shaft sealing device for a rotating shaft mixer includes a sealing end cover 1, a sealing ring 2, a shaft sleeve 3 and a sealing gland 4.

[0027] The shaft sleeve 3 is sleeved on the shaft body of the rotating shaft 5, and the shaft body is the part where the rotating shaft 5 passes through the machine shell 6. Both ends of the rotating shaft 5 are installed on bearings, and the bearings are installed in the bearing seat 7. The mixing paddles are axially distributed on the rotating shaft 5 and are located inside the machine shell 6.

[0028] The outer edge of the sealing end cover 1 is circumferentially provided with bolt holes, and the sealing end cover 1 is fixedly connected to the machine shell 6 through bolts 8, nuts 9, elastic washers 10 and flat washers 11. The inner side of the sealing end cover 1 is sleeved outside the shaft sleeve 3 but does not contact the shaft sleeve 3.

[0029] The inner wall of the sealing end cover 1 is provided with a groove 12. The sealing ring 2 is made of asbestos packing. The sealing ring 2 is placed in the groove 12, and the sealing ring 2 is sleeved on the shaft sleeve 3 and is in close contact with the shaft sleeve 3. In the present utility model, the sealing ring 2 is made of asbestos packing, which has good sealing performance, lubricity and extreme resistance to media.

[0030] The outer edge of the left end of the sealing gland 4 is fixedly connected to the sealing end cover 1 through bolts 8 and elastic washers 10. The inner side of the sealing gland 4 is sleeved outside the shaft sleeve 3 but does not contact the shaft sleeve 3. The right end face of the sealing gland 4 presses on the sealing ring 2, and the sealing ring 2 is axially fixed by tightening the bolts 8.

[0031] In the present utility model, the sealing end cover 1 and the machine shell 6 are bolted together, and the sealing gland 4 and the sealing end cover 1 are bolted together, which is convenient for replacing the sealing ring during maintenance.

[0032] The present utility model seals at the place where the rotating shaft 5 extends out of the machine shell 6 to prevent the dust inside the machine shell 6 from overflowing and polluting the environment.

[0033] The protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A shaft sealing device for a rotating shaft mixer, characterized in that: Including sealing end cover, sealing ring, shaft sleeve and sealing gland; The shaft sleeve is sleeved on the rotating shaft, and the shaft sleeve is located at the casing of the rotating shaft mixer; The outer side of the sealing end cover is fixedly connected to the side wall of the housing of the rotary shaft mixer, and the inner side is sleeved on the outside of the shaft sleeve but does not contact the shaft sleeve; The outer side of the sealing gland is fixedly connected to the sealing end cover, and the inner side is sleeved outside the shaft sleeve but does not contact the shaft sleeve; The sealing ring is sleeved on the shaft sleeve, and the inner wall of the sealing ring contacts the shaft sleeve; the sealing ring is placed in the groove of the sealing end cover and is pressed and fixed by the sealing gland; The outer side of the sealing end cover is fixedly connected to the side wall of the housing of the rotary shaft mixer by bolts; the outer side of the sealing gland is fixedly connected to the sealing end cover by bolts; The sealing ring is made of asbestos packing.

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