CN218236135U - Double-end-face sealing device for solid material feeding and discharging pipe - Google Patents

Abstract

The application provides a double-end solid material inlet and outlet pipe sealing device, including: a first sealing ring and a second seal ring, both of which are sleeved on the inlet and outlet pipe; an annular spring, which is sleeved on the inlet and outlet pipe and is connected with The inlet and outlet pipes are connected and fixed; the first sealing panel and the second sealing panel are both ring-shaped, and one side of the first sealing panel is close to the end cover or flange of the equipment, and the other side is connected to the first sealing ring. The sides are fitted together; the side of the second sealing panel is fitted to the side of the second sealing ring; the sealing cover ring is set on the outer circumference of the first sealing panel and the second sealing panel and fixed with them, and the gap between the three Together they form a closed sealed cavity. The sealing device not only has good sealing performance, but also can be adapted to the sealing under the working condition of deflection, and has a long service life.

Description

A double-end solid material inlet and outlet pipe sealing device

technical field

The application provides a dynamic sealing device, especially a double-end solid material sealing device used at the inlet and outlet pipes of a ball mill.

Background technique

The ball mill is the key equipment for crushing the material after it is crushed. This type of grinding machine is filled with a certain number of steel balls in its cylinder as the grinding medium. It is widely used in cement, silicate products, new building materials , Refractory materials, chemical fertilizers, black and non-ferrous metal beneficiation and glass ceramics and other production industries, dry or wet grinding of various ores and other grindable materials.

In existing dry grinding ball mills, grooves are usually processed on the bushings, and rubber strips, asbestos packing, V-shaped seals, wool felt, etc. are filled at the joint surfaces. However, these sealing structures wear quickly, have poor effect and short life; moreover, frequent slurry leakage pollutes the environment on site. The sealing performance of the connection between the inlet and outlet of the ball mill is poor, causing external dust to invade the inside of the ball mill during internal grinding, resulting in impurities in the raw materials for grinding, and even the dust inside the ball mill due to poor sealing effect during grinding, resulting in internal air pressure. Leakage, the grinding material will leak at the connection port, resulting in a decrease in work efficiency and an increase in cost.

Contents of the invention

The present application solves the above-mentioned shortcomings in the background technology, and provides a double-end solid material inlet and outlet pipe sealing device. The sealing device not only has good sealing performance, but also can be adapted to sealing under eccentric conditions, and has a long service life.

The technical scheme used to realize the above-mentioned purpose of the application is:

A double-end surface solid material inlet and outlet pipe sealing device is arranged between the inlet and outlet pipe and the equipment end cover or flange. The equipment end cover or flange is sleeved on the inlet and outlet pipe and rotates around the inlet and outlet pipe. The solid material inlet and outlet pipe sealing device includes:

The first sealing ring and the second sealing ring are both sleeved on the inlet and outlet pipes and connected and fixed with the inlet and outlet pipes;

Ring spring, which is sleeved on the inlet and outlet pipe and connected and fixed with the inlet and outlet pipe, and is located between the first seal ring and the second seal ring. The two sides of the ring spring are respectively connected to the sides of the first seal ring and the second seal ring. Contact and apply axial elastic thrust to the first sealing ring and the second sealing ring;

The first sealing panel and the second sealing panel are both ring-shaped, wherein one side of the first sealing panel is attached to the equipment end cover or flange, and the other side is attached to the side of the first sealing ring; The side surfaces of the second sealing panel are attached to the side surfaces of the second sealing ring;

Fixing bolts, installed on the second sealing panel and the first sealing panel, are evenly distributed along the circumferential direction, and fix the second sealing panel and the first sealing panel on the equipment end cover or flange;

The sealing cover ring is sleeved on the outer circumference of the first sealing panel and the second sealing panel and fixed thereto, and the three jointly form a closed sealing cavity.

The sealing cover ring is provided with a grease injection pipe joint for filling the sealing cavity with grease.

The cross-section of the ring spring is M-shaped, a rubber pad is arranged between the inner circumference of the ring spring and the inlet and outlet pipe, and the outer circumference of the ring spring is provided with connecting bolts for fixing its hoop on the inlet and outlet pipe.

The material of the first sealing ring and the second sealing ring is felt or rubber, and clamps are arranged on the outer circumferences of the first sealing ring and the second sealing ring.

The outer circular surface of the sealing cover ring is provided with connecting bolts, the sealing cover ring is fixed with the first sealing panel and the second sealing panel by welding and connecting bolts, and the side of the sealing cover ring is connected with the equipment end cover or flange Welding fixed.

The two side surfaces of the annular spring are adhesively connected and fixed with the side surfaces of the first sealing ring and the second sealing ring.

Compared with the prior art, the double-end solid material inlet and outlet pipe sealing device provided by this application has the following advantages: 1. In this application, the sealing method is changed to a double-end seal, which has a large effective sealing area and the first end face A grease seal is added between the seal and the second end face seal. While the grease seal has a sealing effect, it can also improve the frictional contact surface between the first/second seal ring and the first/second seal panel. Lubrication reduces wear on primary/secondary seal rings. 2. In this application, the end face seal is used, so the sealing surface is radial. When the ball mill is running, when the radial deflection occurs, since the direction of the deflection is consistent with the direction of the sealing surface, this application can work on the radial deflection. Keep the sealing effect under the condition. When axial deflection occurs, since the annular spring always applies axial elastic thrust to the first and second sealing rings, and the first/second sealing ring itself is made of flexible material, it can be moved through axial displacement or Local elastic deformation to accommodate axial runout. 3. During long-term use, due to the friction between the first/second sealing ring and the first/second sealing panel, the first/second sealing ring will be worn. In order to avoid the impact of wear on the sealing effect and improve the service life of the sealing device, the annular spring provided in the present application can further solve this problem. Since the two sides of the ring spring are respectively in contact with the side surfaces of the first seal ring and the second seal ring and apply axial elastic thrust to the first seal ring and the second seal ring, the first seal ring and the second seal ring can be Keep close contact with the sealing panel at all times, even after the first sealing ring and the second sealing ring are worn, so as to ensure the sealing effect and improve the service life.

Description of drawings

Fig. 1 is the overall structural schematic diagram of the double-end solid material inlet and outlet pipe sealing device provided by the present invention;

In the figure: 1-Equipment end cover, 2-Inlet and outlet pipe, 3-First sealing ring, 4-Second sealing ring, 5-First sealing panel, 6-Second sealing panel, 7-Fixing bolts, 8- Sealing cover ring, 9-grease injection pipe joint, 10-ring spring, 11-connecting bolt, 12-clamp, 13-rubber pad.

detailed description

The present application will be described in detail below in conjunction with the accompanying drawings, but the protection scope of the present application is not limited to the following embodiments.

The structure of a double-end solid material inlet and outlet pipe sealing device provided by the application is shown in Figure 1. The device is arranged between the inlet and outlet pipe 2 and the equipment end cover 1, wherein the equipment end cover is sleeved on the inlet and outlet pipe and Rotating around the inlet and outlet pipes, the double-end solid material inlet and outlet pipe sealing device includes the following components: a first sealing ring and a second sealing ring, both of which are sleeved on the inlet and outlet pipes and connected and fixed with the inlet and outlet pipes; The material of the first sealing ring 3 and the second sealing ring 4 is felt or rubber, and a clip 12 is arranged on the outer circumference of the first sealing ring and the second sealing ring.

Annular spring 10, which is sleeved on the inlet and outlet material pipe and connected and fixed with the inlet and outlet material pipe, and is positioned between the first seal ring and the second seal ring, the two sides of the ring spring are respectively connected with the first seal ring and the second seal ring The sides are in contact and apply axial elastic thrust to the first seal ring and the second seal ring; the section of the ring spring is M-shaped, and a rubber pad 13 is arranged between the inner circumference of the ring spring and the inlet and outlet pipes, and the ring spring The outer circumference is provided with connecting bolts 11 for fixing the hoop to the inlet and outlet pipes. The two side surfaces of the annular spring are adhesively connected and fixed with the side surfaces of the first sealing ring and the second sealing ring. During long-term use, the first/second sealing ring will be worn due to friction between the first/second sealing ring and the first/second sealing panel. In order to avoid the impact of wear on the sealing effect and improve the service life of the sealing device, the annular spring provided in the present application can further solve this problem. Since the two sides of the ring spring are respectively in contact with the side surfaces of the first seal ring and the second seal ring and apply axial elastic thrust to the first seal ring and the second seal ring, the first seal ring and the second seal ring can be Keep close contact with the sealing panel at all times, even after the first sealing ring and the second sealing ring are worn, so as to ensure the sealing effect and improve the service life.

The first sealing panel 5 and the second sealing panel 6 are both ring-shaped, wherein one side of the first sealing panel is attached to the equipment end cover, and the other side is attached to the side of the first sealing ring; the second The side of the sealing panel is attached to the side of the second sealing ring; the fixing bolts 7 are installed on the second sealing panel and the first sealing panel, and are evenly distributed along the circumferential direction to fix the second sealing panel and the first sealing panel on the equipment on the end cap.

The sealing cover ring 8 is sleeved on the outer circumference of the first sealing panel and the second sealing panel and fixed thereto, and a closed sealing cavity is formed between the three, and the sealing cover ring is provided with a seal for filling the sealing cavity. The grease injection pipe joint 9 injects the grease seal between the first end face seal and the second end face seal through the grease injection pipe joint. The frictional contact surface between the ring and the first/second sealing plate is lubricated to reduce the wear of the first/second sealing ring. Connecting bolts are arranged on the outer circular surface of the sealing cover ring, and the sealing cover ring is fixed to the first sealing panel and the second sealing panel by welding and connecting bolts, and the side of the sealing cover ring is welded and fixed to the equipment end cover.

Claims (6)

1. The utility model provides a bi-polar face solid material business turn over material pipe sealing device, sets up between business turn over material pipe and equipment end cover or flange, and equipment end cover or flange cover are on business turn over material pipe and around business turn over material pipe rotation, its characterized in that: the sealing device for the double-end-face solid material feeding and discharging pipe comprises:

the first sealing ring and the second sealing ring are sleeved on the feeding and discharging pipe and are fixedly connected with the feeding and discharging pipe;

the annular spring is sleeved on the feeding and discharging pipe, is connected and fixed with the feeding and discharging pipe and is positioned between the first sealing ring and the second sealing ring, and two sides of the annular spring are respectively contacted with the side surfaces of the first sealing ring and the second sealing ring and apply axial elastic thrust to the first sealing ring and the second sealing ring;

the first sealing panel and the second sealing panel are annular, one side face of the first sealing panel is attached to the equipment end cover or the flange, and the other side face of the first sealing panel is attached to the side face of the first sealing ring; the side surface of the second sealing panel is attached to the side surface of the second sealing ring;

the fixing bolts are arranged on the second sealing panel and the first sealing panel, are uniformly distributed along the circumferential direction, and fix the second sealing panel and the first sealing panel on the equipment end cover or the flange;

and the sealing cover ring is sleeved on the outer circumferences of the first sealing panel and the second sealing panel and fixed with the first sealing panel and the second sealing panel, and a closed sealing cavity is formed among the first sealing panel, the second sealing panel and the third sealing panel.

2. The double-ended solid material inlet and outlet tube sealing device of claim 1, wherein: and a grease injection pipe joint for filling grease into the sealing cavity is arranged on the sealing cover ring.

3. The double-ended solid material inlet and outlet tube sealing device of claim 1, wherein: the section of the annular spring is M-shaped, a rubber cushion is arranged between the inner circumference of the annular spring and the feeding and discharging pipe, and a connecting bolt for tightly hooping the annular spring and fixing the annular spring on the feeding and discharging pipe is arranged on the outer circumference of the annular spring.

4. The double-ended solid material inlet and outlet tube sealing device of claim 1, wherein: the first sealing ring and the second sealing ring are made of felt or rubber, and the clamp is arranged on the outer circumferences of the first sealing ring and the second sealing ring.

5. The sealing device for the double-end-face solid material feeding and discharging pipe of claim 1, wherein: and a connecting bolt is arranged on the outer circular surface of the sealing cover ring, the sealing cover ring is fixed with the first sealing panel and the second sealing panel through welding and the connecting bolt, and the side edge of the sealing cover ring is welded and fixed with the equipment end cover or the flange.

6. The double-ended solid material inlet and outlet tube sealing device of claim 3, wherein: and two side surfaces of the annular spring are fixedly connected with the side surfaces of the first sealing ring and the second sealing ring in an adhesive manner.

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