Drying drum port elastic tension sealing device

Abstract

This utility model relates to an elastic tension sealing device for the end of a drying drum. The device includes an end fixing seat with a base at its bottom. A circular inner sleeve is mounted on the end fixing seat and engages with the end of the drum body. A flexible sealing ring, conical in shape, is mounted on the outer surface of the inner sleeve, with one end fixed to the inner sleeve and the other end covering the outer side of the drum body end. The device also includes a tension cable that wraps around the flexible sealing ring and connects to the base. A spring is attached to one end of the tension cable. This elastic tension sealing device for the drying drum end, with a spring at the end of the tension cable, not only tightens the flexible sealing ring but also compensates for deviations in the roundness of the drum body, thus ensuring an overall sealing effect.

Description

Technical Field

[0001] This utility model relates to the technical field of drying machine end sealing equipment, and in particular to an elastic tension sealing device for the port of a drying drum. Background Technology

[0002] A dryer typically consists of a rotating dryer drum and fixed ends. The material to be dried is stored inside the drum. During the rotation of the drum, the material impacts the inner wall of the drum, causing radial vibration at the drum's ends. Gaps will appear at the connection between the drum and the ends, leading to heat loss or even material leakage inside the drum.

[0003] A dryer end sealing device is a device that dynamically seals the ends of a dryer drum. It typically uses several sealing plates of the same shape stacked in sequence to form a ring, and then presses the ring of sealing plates onto the drum to seal the drum. It can also accommodate the radial runout of the drum to a certain extent. For example, Chinese patent CN204921990U - an end sealing device suitable for drum dryers - uses the elasticity of a spring to press the sealing plates onto the drum.

[0004] While the above fixing methods can press the sealing sheet onto the cylinder, if there is a deviation in the roundness of the cylinder, the sealing sheet can easily be lifted up during rotation, resulting in a poor seal.

[0005] Therefore, a device that can provide an elastic seal for the cylinder is needed. Utility Model Content

[0006] The purpose of this invention is to solve the above-mentioned problems and provide an elastic tension sealing device for the port of a drying drum.

[0007] The technical solution of this utility model is: an elastic tension sealing device for the end of a drying drum, installed at the end of the dryer drum body, including an end fixing seat, with a base at the bottom of the end fixing seat; a circular inner sleeve is provided on the end fixing seat, the inner sleeve cooperating with the end of the drum body; a flexible sealing ring is provided on the outer surface of the inner sleeve, the flexible sealing ring is conical, one end of the larger diameter is fixed to the inner sleeve, and the other end covers the outer side of the end of the drum body; the flexible sealing ring is used to seal the gap between the drum body and the inner sleeve, and when the drum body undergoes radial movement, the flexible sealing ring deforms accordingly, preventing gaps from appearing when the drum body moves.

[0008] The device also includes a pull cable; the pull cable wraps around the flexible sealing ring once and then connects to the base; a spring is installed at one end of the pull cable. The middle part of the pull cable starts from the bottom of the flexible sealing ring and wraps around it once, and both ends of the pull cable are then connected to the base. The tension of the pull cable can press the flexible sealing ring against the outer wall of the cylinder to ensure a sealing effect. The spring on the pull cable can provide compensation when there is a deviation in the roundness of the cylinder, thereby keeping the pull cable taut and ensuring the sealing effect on the cylinder.

[0009] Preferably, the flexible sealing ring includes several rectangular flexible sealing sheets arranged circumferentially around the inner sleeve axis, with adjacent flexible sealing sheets partially overlapping. One end of each flexible sealing sheet is fixed to the inner sleeve, and the other end is pressed against the outer surface of the cylinder. Using several flexible sealing sheets stacked sequentially in a ring shape to seal the cylinder not only adapts to cylinders of various sizes but also ensures that individual flexible sealing sheets can strain when the roundness of the cylinder deviates, thus guaranteeing the overall sealing effect.

[0010] Preferably, both ends of the pull cable are provided with turnbuckles, which are then attached to the base; the spring is positioned between one end of the pull cable and the turnbuckle on the corresponding side. The turnbuckles facilitate adjustment of the tension of the pull cable and make installation easier.

[0011] Furthermore, the end of the pull cable passes through the end of the turnbuckle and wraps back to overlap, forming an overlapping portion; a locking sleeve is provided on the overlapping portion. The overlap of the pull cable end and the locking sleeve further enhances the stability of the fit between the pull cable and the turnbuckle.

[0012] Preferably, an anti-detachment hook is fixedly provided on the outer side of the flexible sealing ring; several anti-detachment hooks are arranged along the circumference of the flexible sealing ring; each anti-detachment hook includes a fixed end and a hook, with the fixed end connected to the end of the hook; the fixed end is located on the side with the larger diameter of the flexible sealing ring; the hook is arranged along the generatrix direction of the flexible sealing ring; the hook cooperates with the pull cable. With one end of the anti-detachment hook fixed and the other end hooked onto the pull cable, the pull cable is prevented from detaching from the flexible sealing ring, making the device more stable during use.

[0013] Preferably, the outer edge of the inner sleeve is provided with a tapered surface, and the inner surface of the flexible sealing ring is in contact with the tapered surface; the flexible sealing ring is fixed to the tapered surface with bolts. The tapered surface can completely fit with the flexible sealing ring, and the two are then fixed with bolts, which improves the fixing effect and sealing effect.

[0014] Preferably, the end of the pull cable is vertically connected to the base. A vertical end to the pull cable allows for better tightening under the action of the spring, resulting in a more effective tension.

[0015] The beneficial effects of this utility model are as follows: The elastic tension sealing device at the drying drum port of this utility model has the following advantages:

[0016] 1. The spring at the end of the pull cable in this utility model can not only tighten the flexible sealing ring, but also provide compensation when there is a deviation in the roundness of the cylinder, thereby ensuring the overall sealing effect.

[0017] 2. In this utility model, several anti-detachment hooks are provided on the outer side of the flexible sealing ring. The anti-detachment hooks can restrict the traction cable to the side of the flexible sealing ring, thus preventing the traction cable from falling off. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the elastic tension sealing device at the port of the drying drum of this utility model. Figure 1 ;

[0019] Figure 2 yes Figure 1 Enlarged view of I;

[0020] Figure 3 yes Figure 1 Side view;

[0021] Figure 4 yes Figure 3 AA section view;

[0022] Figure 5 yes Figure 3 Enlarged view of section II;

[0023] Figure 6 yes Figure 4 Enlarged view of III;

[0024] Figure 7 This is a structural diagram of the tension cable, turnbuckle, and spring;

[0025] Figure 8 yes Figure 7 Enlarged view of IV;

[0026] Figure 9 This is a structural schematic diagram of the end fixing seat.

[0027] In the diagram: 00. Cylinder body, 1. End fixing seat, 11. Base, 12. Inner sleeve, 121. Conical surface.

[0028] 2. Flexible sealing ring; 21. Flexible sealing sheet; 22. Anti-detachment hook body; 221. Fixed end; 222. Hook.

[0029] 3. Pull cable, 31. Overlapping part, 4. Turnbuckle, 5. Spring, 6. Locking sleeve. Detailed Implementation

[0030] Example 1: See Figure 1-9 An elastic tension sealing device for the end of a drying drum is installed at the end of the dryer drum body 00. It includes an end fixing seat 1 with a base 11 at its bottom. A circular inner sleeve 12 is provided on the end fixing seat 1, engaging with the end of the drum body 00. A flexible sealing ring 2 is provided on the outer surface of the inner sleeve 12. The flexible sealing ring 2 is conical, with one end fixed to the inner sleeve 12 and the other end covering the outer side of the end of the drum body 00. The flexible sealing ring 2 seals the gap between the drum body 00 and the inner sleeve 12, allowing the flexible sealing ring 2 to deform accordingly when the drum body 00 experiences radial movement, thus preventing gaps from forming when the drum body 00 moves.

[0031] The device also includes a pull cable 3; the pull cable 3 wraps around the flexible sealing ring 2 once and then connects to the base 11; a spring 5 is provided at one end of the pull cable 3. The middle part of the pull cable 3 starts from the bottom of the flexible sealing ring 2 and wraps around it once. The two ends of the pull cable 3 are then connected to the base 11. The tightening force of the pull cable 3 can press the flexible sealing ring 2 against the outer wall of the cylinder 00 to ensure the sealing effect. The spring 5 on the pull cable 3 can provide compensation when there is a deviation in the roundness of the cylinder 00, thereby keeping the pull cable 3 tight and ensuring the sealing effect of the cylinder 00.

[0032] The flexible sealing ring 2 includes several rectangular flexible sealing pieces 21, which are arranged circumferentially around the axis of the inner sleeve 12, with some overlap between adjacent flexible sealing pieces 21. One end of each flexible sealing piece 21 is fixed to the inner sleeve 12, and the other end is pressed against the outer surface of the cylinder 00. By using several flexible sealing pieces 21 stacked in a ring shape to seal the cylinder 00, it can not only adapt to cylinders 00 of various sizes, but also allow individual flexible sealing pieces 21 to strain when there is a deviation in the roundness of the cylinder 00, thereby ensuring the overall sealing effect.

[0033] The flexible sealing sheets 21 are stacked in sequence and aligned with the rotation direction of the cylinder 00. This prevents the edges of the flexible sealing sheets 21 from abutting against the outer wall of the cylinder 00, which could damage the flexible sealing sheets 21 and thus ensure the normal operation of the device.

[0034] Both ends of the tension cable 3 are equipped with turnbuckles 4, which are hooked onto the base 11. The spring 5 is located between one end of the tension cable 3 and the turnbuckle 4 on the corresponding side. The turnbuckles 4 facilitate the adjustment of the tension of the tension cable 3 and make installation easier.

[0035] The end of the pull cable 3 passes through the end of the turnbuckle 4 and wraps back to overlap to form an overlapping part 31; a locking sleeve 6 is provided on the overlapping part 31. The end of the pull cable 3 wraps back to overlap and is locked by the locking sleeve 6, which can improve the stability of the fit between the pull cable 3 and the turnbuckle 4.

[0036] An anti-detachment hook body 22 is fixedly installed on the outer side of the flexible sealing ring 2; several anti-detachment hook bodies 22 are arranged along the circumference of the flexible sealing ring 2; the anti-detachment hook body 22 includes a fixed end 221 and a hook 222, with the fixed end 221 connected to the end of the hook 222; the fixed end 221 is located on the side with the larger diameter of the flexible sealing ring 2; the hook body is arranged along the generatrix direction of the flexible sealing ring 2; the hook body cooperates with the pull cable 3. One end of the anti-detachment hook body 22 is fixed, and the other end hooks the pull cable 3, which can prevent the pull cable 3 from falling off the flexible sealing ring 2, making the device more stable during use.

[0037] The outer edge of the inner sleeve 12 is provided with a tapered surface 121, and the inner surface of the flexible sealing ring 2 is in contact with the tapered surface 121; the flexible sealing ring 2 is fixed to the tapered surface 121 with bolts. The tapered surface 121 can completely fit with the flexible sealing ring 2, and the two are fixed with bolts, which improves the fixing effect and sealing effect.

[0038] The end of the pull cable 3 is vertically connected to the base 11. The vertical end of the pull cable 3 can be well tightened under the action of the spring 5, resulting in a better effect.

[0039] Example 2: Example 2 is basically the same as Example 1, and the similarities will not be repeated. The difference is that both the inner sleeve 12 and the flexible sealing sheet 21 are equipped with heat insulation layers. This can minimize the heat loss inside the cylinder 00, thereby ensuring the drying efficiency of the material.

Claims

1. A flexible pull seal for a drying drum port, mounted at an end of a drying machine barrel, characterised in that, It includes an end fixing seat, with a base at the bottom of the end fixing seat; a circular inner sleeve is provided on the end fixing seat, which fits with the end of the cylinder; a flexible sealing ring is provided on the outer surface of the inner sleeve, which is a conical ring, with one end of the larger diameter fixed to the inner sleeve and the other end covering the outer side of the end of the cylinder. The device also includes a traction cable; the traction cable is connected to the base after wrapping around the flexible sealing ring once; a spring is provided at one end of the traction cable.

2. The elastic tension sealing device at the port of the drying drum according to claim 1, characterized in that: The flexible sealing ring includes several rectangular flexible sealing sheets, which are arranged around the circumference of the inner sleeve axis, with some overlap between adjacent flexible sealing sheets; one end of the flexible sealing sheet is fixed to the inner sleeve, and the other end is pressed against the outer side of the cylinder.

3. The elastic tension sealing device at the end of the drying drum according to claim 1, characterized in that: Both ends of the tension cable are provided with turnbuckles, which are then attached to the base. The spring is located between one end of the tension cable and the turnbuckle on the corresponding side.

4. The elastic tension sealing device at the port of the drying drum according to claim 3, characterized in that: The end of the traction cable passes through the end of the turnbuckle and wraps back to overlap to form an overlapping part; a locking sleeve is provided on the overlapping part.

5. The elastic tension sealing device at the end of the drying drum according to claim 1, characterized in that: An anti-detachment hook is fixedly installed on the outer side of the flexible sealing ring; several anti-detachment hooks are arranged along the circumference of the flexible sealing ring; the anti-detachment hook includes a fixed end and a hook, with the fixed end connected to the end of the hook; the fixed end is located on the side with the large diameter of the flexible sealing ring; the hook is arranged along the generatrix direction of the flexible sealing ring; the hook cooperates with the traction cable.

6. The elastic tension sealing device at the port of the drying drum according to claim 1, characterized in that: The outer edge of the inner sleeve is provided with a tapered surface, and the inner side of the flexible sealing ring is in contact with the tapered surface; the flexible sealing ring is fixed to the tapered surface with bolts.

7. The elastic tension sealing device at the port of the drying drum according to claim 1, characterized in that: The end of the traction cable is vertically connected to the base.

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