WO2018082121A1

WO2018082121A1 - Anti-blocking ball-sealing device for use with feeding and discharging material of rotary equipment

Info

Publication number: WO2018082121A1
Application number: PCT/CN2016/106239
Authority: WO
Inventors: 贲道春; 陈黎东; 李晓平; 王复光; 李刚
Original assignee: 江苏鹏飞集团股份有限公司
Priority date: 2016-11-03
Filing date: 2016-11-17
Publication date: 2018-05-11
Also published as: CN106516756B; CN106516756A

Abstract

Disclosed is an anti-blocking ball-sealing device for use with feeding and discharging material of a rotary equipment, the ball-sealing device comprising: a plurality of hollow section joints (1, 2, 3, 4, 5, 6), which are connected sequentially; the ball-sealing device relies on a bracket fixed on a rotatable cylindrical member (32) of a rotary equipment, and surrounds the circumference of the cylindrical member such that the hollow section joints are connected head to end, and thus the ball-sealing device is provided with an annular or approximately annular channel; all of the hollow section joints are of equal length and equal diameter, wherein a first hollow section (1) is provided with a material feeding section joint (32, 38) and a material discharging section joint (33, 39), which are separated by a partition; the material feeding section joint and the material discharging section joint are provided with a material feeding port (40) and a material discharging port (37) respectively; a ball (25, 26, 27, 28, 29, 30, 31) is placed in the material feeding section joint and the material discharging section joint of the first hollow section joint, and in each of a second through an N-th hollow section joint respectively; on the material feeding section joint and each of the second through the N-th hollow section joints, a blind tube (7, 8, 9, 10, 11, 12) is provided along a radially outward direction of the rotatable cylindrical member; the diameter of the ball is slightly smaller than the inner diameter of each hollow section joint, and slightly smaller than the inner diameter of the blind tube; the material feeding section joint is provided therein with a ball-position control rod (34).

Description

Anti-blocking ball sealing device for feeding and discharging of rotary equipment

Technical field

The invention relates to an anti-blocking ball sealing device for feeding and discharging of a rotary device, in particular to an inflow and discharge material for preventing outside air from entering the rotary device or leaking gas into the rotary device when the material is introduced into the rotary device or the material is exported. Sealing device.

Background technique

The existing inlet and outlet sealing devices for rotary equipment include: end contact seal, end contact type inflation (or liquid filling) seal, packing compression seal, scale seal, annular tube seal, and different cross section annular tube seal.

End-face contact seals have a gap in the contact surface due to the large diameter of the sealing surface and the manufacturing installation accuracy, the gas leakage is serious, and the contact surface is seriously worn; the end-contact type inflatable (or liquid-filled) seal has good anti-leakage effect, but consumes gas (or More liquid consumption, large contact surface wear and high running cost; packing compression seal due to the large diameter of the sealing surface and the use of manufacturing and installation accuracy, the coaxiality of the static and dynamic contact surfaces is poor, the packing wears quickly, and the maintenance operation cost is high; the scale seal is due to The gap between the scale gap and the sealing contact surface is large, the diameter of the sealing surface is large, and the sealing effect is poor; the annular tube material seal is easy to cause the material seal to be invalid due to less material or material breakage, or the sealing effect is poor due to the high gas permeability of the material; The ball seal sealing flange is used on one side, the number of sealing channels is small, and the movable space of the sealing ball is small. Once the ring pipe is stuck, the blockage will affect the amount of feed and discharge or complete blockage, and the production is forced to stop, which seriously affects the normal operation of the equipment. There are problems with the above sealing effect or sealing reliability or operation rate.

Summary of the invention

The utility model has the advantages of large sealing diameter, fast contact surface wear, large running consumables, coaxiality of dynamic and static sealing surface on the sealing effect, large influence of material flow on sealing and small number of effective sealing passages. The adhesive material affects the existence of the feed and discharge, and provides a small seal diameter and wear of the contact surface. An anti-blocking ball seal device for small and medium-sized materials, which has small operation, less running consumables, less influence on the sealing of the rotating parts, less influence on the flow rate, less sealing effect, more effective sealing channels and less adhesive material.

In one aspect, the present invention provides an anti-blocking ball sealing device for feeding and discharging of a rotary device, characterized in that the ball sealing device comprises a first hollow segment, a second hollow segment, ... , the N-1 hollow segment, the Nth hollow segment; the ball sealing device is fixed on the rotatable cylindrical member of the rotary device by a bracket and surrounds the tubular member for one week, so that the first The hollow segment is connected to the Nth hollow segment so that the ball sealing device has an annular or approximately annular passage; all hollow segments are substantially equal in length and all hollow segments are substantially equal in diameter; A spacer is disposed in a hollow section to divide the first hollow section into a feed section and a discharge section or completely separate between the feed section and the discharge section, the feed section Providing a feed port communicating with the tubular member or the outside, wherein the discharge section is provided with a discharge port communicating with the tubular member or the outside; in the first hollow segment a ball is placed in each of the feed section and the discharge section, a ball is placed in each of the second hollow segment, ..., the N-1 hollow segment, and the Nth hollow segment; the feed segment and the second hollow segment a blind tube is disposed on each of the N-1th hollow segment and the Nth hollow segment along a radially outward direction of the tubular member; the diameter of the ball is slightly smaller than each The inner diameter of the hollow section is slightly smaller than the inner diameter of the blind tube; a ball position control rod is disposed in the feed section.

As used in this application, the term "slewing device" generally refers to a device having a rotatable tubular member, which may also be referred to as a rotary drum device such as a rotary kiln. The ball sealing device of the present application rotates in synchronization with the tubular member.

As used in this application, the term "cylinder member" generally refers to a cylindrical tubular member, but may also include tubular members in other conventional or irregular geometric configurations that are applicable in the art, such as a tubular member having a pyramid shape (the top cross-sectional area is smaller than the cross-sectional area of the bottom surface), a polygonal cross-sectional tubular member, a plum-shaped cross-sectional tubular member, a waist-shaped tubular member, and the like.

As used in this application, the term "hollow section" refers to a component similar to a pipe.

In the present application, the selection of the number of hollow segments can be related to the diameter of the tubular member of the rotary device, Generally, the larger the diameter, the larger the number of hollow segments. Typically, the number of hollow segments is at least three, preferably 4-12.

The hollow segments may be substantially curved and may form an annular shape when the segments of the hollow segments are joined end to end. The hollow segments may also be substantially straight, and may form an approximately circular polygonal shape when the segments of the hollow segments are joined end to end. The hollow segments are sequentially connected in a ring shape on the same circumference or on a spiral line.

The hollow section can be a cylindrical section, where the equal diameter can refer to substantially the same inner diameter. Alternatively, the hollow segments may also be in other suitable shapes suitable for use in the art, such as square cylinders, prisms, etc., where equal diameters may refer to having substantially the same cross-sectional area.

In addition, the inner diameter or cross-sectional area of the appropriate hollow section can be selected according to the desired material flux, thereby selecting the appropriate inlet and outlet sizes.

Alternatively, the connection may be a flange connection, a strap connection or a snap connection, preferably a flange connection. When each of the hollow segments is connected, a sealing ring such as a sealing flange is further disposed between the hollow segments, the diameter of the sealing ring is smaller than the diameter of the ball, so that the ball in one hollow segment cannot be Arrive in another hollow section.

Optionally, the ends of the holes of the sealing ring are provided with a spherical surface that cooperates with the shape of the ball. Optionally, both ends of the hole of the sealing ring are chamfered or not chamfered.

As used in this application, the term "blind tube" refers to a member in the form of a pouch having a receiving space for receiving a ball, which may be cylindrical, circular, or the like. During the rotation of the ball sealing device, the weight of the ball automatically falls into each blind pipe to avoid material flow and prevent the blockage passage from affecting material flow. Alternatively, each blind tube can be configured with a blind tube cover. Alternatively, the blind tube and its corresponding blind tube cover can be integrated into one.

Optionally, the blind tubes on each hollow segment are disposed at one end of the corresponding hollow segment adjacent the discharge direction.

As used in this application, the term "ball position control lever" means that during the rotation of the ball seal device, the ball position control lever prevents the ball in the feed section from passing over the feed section before feeding. Tube The material enters the blind tube to occupy the receiving space of the ball in the blind tube; at the same time, it also ensures that the material in the feeding section enters the second hollow section, and the ball comes out of the blind tube to contact the sealing ring to seal the effect. Prevent the ball in the feed section from coming into contact with the seal ring early and affect the material flow.

Optionally, the ball position control lever is disposed on the wall of the feed section.

Alternatively, if a spacer is provided, the ball position lever can be placed on the spacer.

Alternatively, if a spacer is provided, the ball position lever may be the spacer itself.

Generally, depending on the type of material contained in the tubular member of the rotary device, process temperature, corrosion requirements, etc., a suitable material can be used to manufacture the hollow segment and the ball. Alternatively, the ball may be made of a material selected from the group consisting of steel, metal, ceramic, plastic, and rubber. Alternatively, the hollow section may be made of a material selected from the group consisting of steel, metal, ceramic, plastic, and rubber. Alternatively, the blind tube and the blind tube cover may be made of a material selected from the group consisting of steel, metal, ceramic, plastic, and rubber.

Alternatively, the ball may be hollow or solid, preferably hollow.

Typically, the diameter of the ball is slightly less than the inner diameter of each hollow segment and is slightly smaller than the inner diameter of the blind tube. When the material is finer, the diameter of the ball is closer to the inner diameter of each hollow segment and the inner diameter of the blind pipe, that is, the smaller the gap between the two, the smaller the thickness of the binder.

In another aspect, the present invention also provides an anti-blocking ball sealing device for feeding and discharging of a rotary device, characterized in that the ball sealing device comprises a first hollow segment, a second hollow segment, ... a N-1 hollow segment, an Nth hollow segment; the ball sealing device is fixed to the rotatable cylindrical member of the rotary device by a bracket and surrounds the tubular member along a spiral for at least one week The ball sealing device has a spiral passage; all hollow segments are substantially equal in length and all hollow segments are substantially equal in diameter; the first hollow segment is a feed segment and is provided with a tubular member or an externally communicating feed port; the Nth hollow segment is a discharge section and is provided with a discharge port communicating with the tubular member or the outside; in the first hollow section, the a ball is placed in each of the second hollow segment, ..., the N-1 hollow segment, and the Nth hollow segment; the first hollow segment, the second a hollow section section, ..., each of the N-1 hollow section sections along the tubular member diameter Are outwardly provided with a blind tube; of the ball is slightly smaller than the inner diameter of each of the hollow section and is slightly less than the section of the blind The inner diameter of the tube; a ball position control rod is disposed in the feed section.

In the present invention, each section of the hollow section is a sealing passage which acts as a seal when the ball is in sealing contact with the sealing ring due to gravity. The more the number of channels for sealing, the larger the total contact area of the sealing surface, the greater the gas flow resistance, and the smaller the amount of gas leakage.

During the operation of the ball sealing device of the present invention, the range reached by the ball covers all the channels, and each operation cycle is cleaned once, so that the adhesive in the channel can be automatically cleaned; the effective cross-sectional area in the channel at any time. Not less than the ball diameter, so it can guarantee a stable material passing ability.

During the operation, during the process from the lowest point to the highest point, the ball moves from the blind pipe to the tail flange of the corresponding segment to block the flange hole and block the air passage. The material also sinks to the bottom of the pipe by gravity, and the better the fluidity, the smaller the height difference of the material.

The ball sealing device of the invention has small sealing surface, small wear, less running consumables, is not affected by the coaxiality, is not affected by the amount of the material, is used on both sides of the sealing flange, and has a large number of effective sealing channels, so that the sealing is reliable, The operation cost is small, the glue is automatically cleaned, and the operation rate is high.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the present application, and are intended to be a part of this application. In the drawing:

Figure 1 is a schematic illustration of an embodiment in accordance with the present invention;

Figure 2 is an enlarged cross-sectional view taken along line A-A of Figure 1;

Figure 3 is an enlarged cross-sectional view taken along line B-B of Figure 1;

Figure 4 is a cross-sectional view of Figure 1;

Figure 5 is a cross-sectional view of Figure 4 when rotated clockwise by 30°;

Figure 6 is a cross-sectional view of Figure 5 when rotated clockwise by 30°;

Figure 7 is a cross-sectional view of Figure 6 rotated clockwise by 30°;

Figure 8 is a cross-sectional view of Figure 7 when rotated clockwise by 30°;

Figure 9 is a cross-sectional view of Figure 8 when rotated clockwise by 30°;

Figure 10 is a cross-sectional view of Figure 9 when rotated clockwise by 30°;

Figure 11 is a cross-sectional view of Figure 10 when rotated clockwise by 30°;

Figure 12 is a cross-sectional view of Figure 11 when rotated clockwise by 30°;

Figure 13 is a cross-sectional view of Figure 12 rotated clockwise by 30°;

Figure 14 is a cross-sectional view of Figure 13 when rotated clockwise by 30°;

Figure 15 is a cross-sectional view of Figure 14 when rotated clockwise by 30°;

Figure 16 is a schematic view of a sealing flange ring;

Figure 17 is a schematic illustration of another embodiment in accordance with the present invention;

Figure 18 is a cross-sectional view of Figure 17;

Figure 19 is an enlarged cross-sectional view taken along line C-C of Figure 18;

Fig. 20 is an enlarged cross-sectional view taken along line D-D of Fig. 18;

detailed description

The technical solutions of the present application will be clearly and completely described in the following with reference to the specific embodiments of the present application and the corresponding drawings. It is apparent that the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by a person skilled in the art based on the embodiments of the present application without creative efforts are within the scope of the present application.

The technical solution provided by one embodiment of the present application will be described in detail below with reference to the accompanying drawings, in which N is 6, that is, six equal-length curved hollow segments are connected end to end to form an annular ball seal device.

As shown in FIG. 1, FIG. 2 and FIG. 4, the ball 25 in the blind tube 7 of the hollow section 1 of the first hollow section with the feed opening is at the lowest point of the blind tube 7 due to gravity, and the second hollow The ball 26 in the segment 2 is in the vicinity of the lowest seal flange 19 of the second hollow segment 2 due to gravity; the tubular member 32 is at the lowest (or near minimum) of the hollow segment 1 with the feed port. The material inside flows into the hollow section 1 of the feed port due to gravity.

When the tubular member is rotated clockwise to the position shown in Figure 5, the ball 26 in the second hollow segment 2 reaches the lowest point due to gravity; as the sealing flange 19 is about to lift, the ball 26 leaves the seal. The tendency of the flange ring 19; at the same time, the third hollow section 3, the fourth hollow section 4 and the ball 27, the ball 28 and the ball 29 in the fifth hollow section 5 are respectively at the lowest sealing flange due to gravity At the ring 20, the sealing flange ring 21 and the flange ring 23, the spherical surface and the inner hole of the sealing flange ring are kept in contact and sealed state.

When the tubular member continues to rotate clockwise to the position shown in Figure 6, the ball 25 in the blind tube 7 is lifted, and the ball 26 in the second hollow segment 2 is moved away from the sealing flange 19 by gravity to the lowest point. The blind tube 8 is in. The material entering the first hollow section 1 with the feed port flows through the sealing flange 19 into the second hollow section 2 due to gravity; the ball 30 in the blind tube 12 leaves the blind tube 12 due to gravity to reach the sixth The sealing flange ring 24 at the lowest point of the hollow section 6 is in contact with the inner hole of the sealing flange ring 24 to maintain a sealed state; the ball 29 is close to the highest point of the annular ball sealing device, and is deviated due to gravity and the center of gravity Seal the flange ring 23.

When the tubular member 32 continues to rotate clockwise to the position shown in FIG. 7, the ball 25 in the blind tube 7 is further lifted, and the ball 29 comes into contact with the seal flange 22 due to the lowering of gravity by gravity, and the ball 27 is closed due to the ball Gravity has a tendency to disengage the sealing flange 20 .

When the tubular member 32 continues to rotate clockwise to the position shown in Fig. 8, the ball 27 has a tendency to enter the blind tube 9 due to gravity, and the ball 25 reaches the horizontal center line of the tubular member 32 and leaves the blind tube 7 due to gravity. Seal the flange ring 19 and seal it with the inner hole.

Referring to FIG. 8, FIG. 9, FIG. 10, FIG. 11, FIG. 12, FIG. 13, FIG. 14 and FIG. 15, in the further rotation, whenever the ball 30 or the like reaches the highest point, it is rolled off due to gravity and sealed as before. The flange ring 23 is in contact with the seal; whenever the ball 30 or the like is in contact with the horizontal center line of the tubular member 32 such as the blind tube 12, it is rolled by gravity and then sealed like a sealing flange ring 24; After the ball 30 or the like reaches the lowest point, it is rolled down by gravity, such as the blind tube 12 or the like.

Referring to Figures 14 and 15, the ball 25 in the first hollow section 1 with the feed port reaches the highest point and is rolled by the ball position control rod 34 to reach the vicinity of the blind pipe 7 due to gravity, which is lower than the blind pipe 7 The center line of the tubular member 32 then falls into the blind tube 7; during the rotation, the ball 31 in the hollow section 33 of the discharge opening Except for the sealing contact with the sealing flange ring 24 due to gravity, the rest of the time stays in the other end of the hollow section 33 at the take-out opening due to gravity.

Referring to Fig. 4, when the discharge port 37 of the hollow section 33 with the discharge port reaches the lowest point, the material in the sixth hollow section 6 and the hollow section 33 with the discharge port is lifted from the discharge port due to gravity. 37 discharges the annular ball seal device.

The technical solution provided by another embodiment of the present invention will be described below with reference to FIG. 17, FIG. 18, FIG. 19 and FIG. 20, which is different from the previous embodiment in that the outer side of the hollow section 38 with the feed port is fed; The inside of the hollow section 39 of the discharge port is discharged into the tubular member 32. When the feed port 40 rotates through the bottom, the externally accumulated static material is sucked into the feed port 40, and enters the hollow section 38 with the feed port as the feed port 40 rises under the weight of the material gravity, and then Enter the hollow section 2. When the material reaches the hollow section 39 with the discharge port, it is introduced into the tubular member 32 by the gravity of the material. The other flow processes in the annular ball sealing device and the movement or dwelling process of the ball 25 and the like are the same as in the previous embodiment.

The above description is only an embodiment of the present application and is not intended to limit the application. Various changes and modifications can be made to the present application by those skilled in the art. Any modifications, equivalents, improvements, etc. made within the spirit and scope of the present application are intended to be included within the scope of the appended claims.

Claims

An anti-blocking ball sealing device for feeding in and out of a rotary device, characterized in that the ball sealing device comprises a first hollow segment, a second hollow segment, ..., an N-1 hollow segment, which are sequentially connected The Nth hollow segment; the ball sealing device is fixed on the rotatable cylindrical member of the rotary device by a bracket and surrounds the tubular member for one week, so that the first hollow segment and the Nth hollow segment The segments are connected such that the ball sealing device has an annular or approximately annular passage; all hollow segments are substantially equal in length and all hollow segments are substantially equal in diameter; the first hollow segment is provided with isolation Separating the first hollow section into a feed section and a discharge section or completely separating the between the feed section and the discharge section, the feed section being disposed with the tubular part Or an externally connected feed port, the discharge section is provided with a discharge port communicating with the tubular member or the outside; the feed section and the outlet at the first hollow section a ball is placed in each of the section segments, in the second hollow section, ... a ball is placed in each of the N-1 hollow segment and the Nth hollow segment; the feed segment, the second hollow segment, ..., the N-1 hollow a blind tube is disposed on each of the segment and the Nth hollow segment radially outward of the tubular member; the diameter of the ball is slightly smaller than the inner diameter of each hollow segment and is slightly smaller than the blind The inner diameter of the tube; a ball position control rod is disposed in the feed section.
The ball sealing device according to claim 1, wherein the connection is a flange connection, a strap connection or a snap connection.
The ball sealing device according to claim 2, wherein when each of the hollow segments is connected, a sealing ring is further disposed between the hollow segments, the sealing ring having a smaller diameter than the diameter of the ball.
The ball sealing device according to claim 3, wherein both ends of the hole of the seal ring are provided with a spherical surface that matches the shape of the ball.
The ball sealing device according to claim 1, wherein the blind tube on each hollow segment is Set at one end of the corresponding hollow section near the discharge direction.
The ball sealing device according to claim 1, wherein N is greater than or equal to 3, and preferably N is selected from 4 to 12.
The ball sealing device according to claim 1, wherein the ball is made of a material selected from the group consisting of steel, metal, ceramic, plastic, and rubber; and the hollow segment is selected from the group consisting of steel and metal. Made of materials made of ceramic, plastic, and rubber.
A ball sealing device according to claim 1 wherein the ball is hollow or solid.
A ball sealing device according to claim 1, characterized in that the ball position control lever is arranged on the wall of the feed section or on the spacer or as the spacer itself.
An anti-blocking ball sealing device for feeding and discharging of a rotary device, characterized in that the ball sealing device comprises a first hollow segment, a second hollow segment, ..., an N-1 hollow segment, a Nth a hollow segment; the ball sealing device is fixed on the rotatable cylindrical member of the rotary device by a bracket and surrounds the tubular member along a spiral for at least one week, so that the ball sealing device has a spiral passage; All hollow segments are substantially equal in length and all hollow segments are substantially equal in diameter; the first hollow segment is a feed segment and is provided with a feed port in communication with the tubular member or the outside The Nth hollow segment is a discharge section and is provided with a discharge port communicating with the tubular member or the outside; in the first hollow segment, the second hollow segment, ..., a ball is placed in each of the N-1th hollow segment and the Nth hollow segment; the first hollow segment, the second hollow segment, ..., the first Each of the N-1 hollow segments is provided with a blind tube along a radially outward direction of the tubular member; It is slightly smaller than the inner diameter of each of the hollow section and is slightly less than the inner diameter of the sections of the blind tube; said feed zone section is provided with a control rod position of the ball.