Sealing device for pyrolysis reactor and heating box body
By using a combined sealing device of fixed ring, fish scale, seal and cylinder between the pyrolysis reactor and the heating box, the problem of poor sealing is solved, and the effect of good sealing is achieved, which prevents air leakage and external air from entering, improving working efficiency and durability of the seal.
Patent Information
- Application Number
- CN202422057457.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The poor sealing between the traditional pyrolysis reactor and the heating box leads to waste of energy and an increase in the oxygen content in the flue gas, affecting environmental pollution.
A combined sealing device of fixed ring, fish scale, seal and cylinder is adopted to adapt to the movement and deformation of the pyrolysis reactor, and uses multiple seals to wrap the outside of the cylinder, and automatically adjust the gap through the cylinder to maintain sealing.
Effectively prevent air leakage, ensure sealing, prevent external air from entering the heating box, improve sealing and working efficiency, and extend the service life of the seal.
Smart Images
Figure CN223087784U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of waste rubber and plastic pyrolysis equipment, and particularly relates to a sealing device for a pyrolysis reactor and a heating box body. Background Art
[0002] The accumulation of a large number of waste tires not only occupies land, but also is extremely prone to fire, causing environmental pollution. Recycling waste tires can not only relieve the environmental pressure, reduce pollution, but also realize the effective recycling of resources. Waste tire pyrolysis refers to an irreversible thermochemical reaction in an anaerobic or anoxic atmosphere, in which organic substances in waste tires are pyrolyzed by high temperature, volatile products are released, and solid coke is formed. Gas, liquid and solid products can be formed during the incomplete thermal degradation process. By using this method, waste tires can be completely pyrolyzed into useful products such as pyrolysis oil, pyrolysis carbon black and pyrolysis non-condensable gas.
[0003] In order to provide sufficient heat for the pyrolysis reactor, a heating box body is usually sleeved outside the pyrolysis reactor. There is a dynamic and static cooperation between the pyrolysis reactor and the heating box body. Since the pyrolysis reactor rotates outwards while the heating box body is stationary, there is high-temperature flue gas up to 800-900 °C in the heating box body, and the heating box body operates under negative pressure. Therefore, the sealing performance at the dynamic and static joint of the pyrolysis reactor and the heating box body is particularly important. If the two ends of the heating box body are not well sealed, it will not only waste energy and affect work efficiency, but also increase the oxygen content in the flue gas, resulting in an excessive oxygen content in the emissions and increasing environmental pollution.
[0004] However, the traditional sealing of the pyrolysis reactor and the heating box body generally adopts installing a circle of asbestos boards at the end of the heating box body to block. After the asbestos boards are overburned, they will powderize, thus losing the sealing effect and causing air intake into the heating box body. Summary of the Utility Model
[0005] The details of one or more embodiments of the utility model are set forth in the following drawings and description, so as to make other features, objects and advantages of the present application more concise and understandable.
[0006] The utility model provides a sealing device for a pyrolysis reactor and a heating box body, which solves the technical problem of poor sealing between the traditional pyrolysis reactor and the heating box body, and has the characteristics of adapting to various movements and deformations of the cylinder body of the pyrolysis reactor and good sealing performance.
[0007] The utility model discloses a sealing device for a pyrolysis reactor and a heating box body, which is hermetically connected to the dynamic and static joint of an externally rotating pyrolysis reactor and a heating box body, and comprises a fixing ring, fish scales, a sealing member, and a cylinder; the fixing ring is sleeved outside the cylinder body of the externally rotating pyrolysis reactor and is located outside the heating box body, and one end face abuts against the heating box body; one end of the fish scales is arranged close to the heating box body and is fixed on the fixing ring through a fixing member, the other end of the fish scales extends away from the heating box body and fits on the cylinder body of the externally rotating pyrolysis reactor, and a plurality of the fish scales are evenly distributed along the circumferential direction of the cylinder body of the externally rotating pyrolysis reactor; the sealing member is sleeved outside the cylinder body of the externally rotating pyrolysis reactor and is arranged below the fish scales, the sealing member is of a split structure, and the sealing member has the same radian as the outer diameter of the externally rotating pyrolysis reactor; a push rod of the cylinder pushes the side surface of the other end of the fish scales to fit the outer side surface of the sealing member, and the inner side surface of the sealing member fits the outer side surface of the cylinder body of the externally rotating pyrolysis reactor at a first position.
[0008] In some embodiments, a plurality of the cylinders are evenly distributed along the circumferential direction of the cylinder body of the externally rotating pyrolysis reactor, and one end of a push rod of the cylinder is fixedly connected with a pressing plate, and the pressing plate fits the side surface of the other end of the fish scales.
[0009] In some embodiments, the fixing ring is of a bent structure, one side surface of the bent structure abuts against the heating box body, and the other side surface is sleeved outside the sealing member.
[0010] In some embodiments, the pressing plate is arranged away from the heating box body and fits outside the side surface of the other end of the fish scales.
[0011] In some embodiments, the other side surface of the bent structure is sleeved outside the sealing member and is located below the fish scales, and the other side surface of the bent structure is arranged in a dislocation manner with the pressing plate.
[0012] In some embodiments, the fixing member comprises a bolt and a nut.
[0013] In some embodiments, the sealing member is a graphite sealing member.
[0014] In some embodiments, a connecting seat for installing the cylinder is arranged on the pressing plate.
[0015] In some embodiments, each pressing plate is correspondingly arranged with each sealing member of the split structure.
[0016] In some of these embodiments, the sealing device is sealingly connected to the dynamic and static joints at the front and rear ends of the external rotary pyrolysis reactor and the heating box body.
[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0018] The present utility model provides a sealing device for a pyrolysis reactor and a heating box body. Through structural design, it can adapt to various movements and deformations of the cylinder body of the pyrolysis reactor. By using multiple sealing members to wrap around the outside of the cylinder body of the pyrolysis reactor, air leakage is effectively prevented. At the same time, by setting fish scale pieces to press the sealing members, the close fit between the sealing members and the cylinder body of the pyrolysis reactor is ensured. Additionally, by setting a cylinder, when the sealing members are worn, the cylinder automatically adjusts the gap so that the sealing members and the pyrolysis reactor are always in a sealed and fitted state, which can effectively prevent external air from entering the heating box body and effectively ensure the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:
[0020] Figure 1 is a schematic structural diagram of the sealing device for the pyrolysis reactor and the heating box body provided by the embodiment of the present utility model;
[0021] Figure 2 is a schematic structural diagram of the fixing ring provided by the embodiment of the present utility model;
[0022] Figure 3 is a schematic structural diagram of the fish scale piece provided by the embodiment of the present utility model;
[0023] Figure 4 is a schematic structural diagram of the sealing member provided by the embodiment of the present utility model;
[0024] Figure 5 is a schematic structural diagram of the cylinder provided by the embodiment of the present utility model;
[0025] Figure 6 is an assembly schematic diagram of the sealing device for the pyrolysis reactor and the heating box body provided by the embodiment of the present utility model;
[0026] In the above figures: 1. Sealing device; 101. Fixing ring; 102. Fish scale piece; 103. Sealing member; 104. Cylinder; 105. Pressing plate; 106. Connecting seat; 2. Pyrolysis reactor; 3. Heating box body. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be described and explained below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Based on the embodiments provided by the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.
[0028] An embodiment of the present utility model provides a sealing device 1 for a pyrolysis reactor 2 and a heating box 3. Figures 1 - 5 It is a schematic structural diagram and a partial structural diagram of the sealing device 1 for the pyrolysis reactor 2 and the heating box 3 according to an embodiment of the present utility model. Refer to Figures 1 - 5 As shown, the sealing device 1 for the pyrolysis reactor 2 and the heating box 3 is hermetically connected to the dynamic and static joint of the external rotation type pyrolysis reactor 2 and the heating box 3, and includes a fixing ring 101, fish scales 102, a sealing member 103, and a cylinder 104; the fixing ring 101 is sleeved outside the cylinder body of the external rotation type pyrolysis reactor 2 and is located outside the heating box 3, and one end face abuts against the heating box 3; one end of the fish scales 102 is arranged close to the heating box 3 and is fixed on the fixing ring 101 through a fixing member, and the other end of the fish scales 102 extends away from the heating box 3 and fits on the cylinder body of the external rotation type pyrolysis reactor 2, and a plurality of fish scales 102 are evenly distributed along the circumferential direction of the cylinder body of the external rotation type pyrolysis reactor 2; the sealing member 103 is sleeved outside the cylinder body of the external rotation type pyrolysis reactor 2 and is arranged below the fish scales 102, the sealing member 103 is a split structure, and the sealing member 103 has the same radian as the outer diameter of the external rotation type pyrolysis reactor 2; the push rod of the cylinder 104 pushes the side surface of the other end of the fish scales 102 until the side surface of the other end of the fish scales 102 fits against the outer side surface of the sealing member 103, and the inner side surface of the sealing member 103 fits against the outer side surface of the cylinder body of the external rotation type pyrolysis reactor 2 at a first position.
[0029] Through the structural design, the above-mentioned sealing device 1 for the pyrolysis reactor 2 and the heating box 3 can adapt to the movements and deformations of various aspects of the cylinder body of the pyrolysis reactor 2. By using multiple sealing members 103 to wrap outside the cylinder body of the pyrolysis reactor 2, air leakage can be effectively prevented. At the same time, by setting the fish scales 102 to press the sealing member 103, the tight fit between the sealing member 103 and the cylinder body of the pyrolysis reactor 2 is ensured. In addition, by setting the cylinder 104, when the sealing member 103 is worn, the cylinder 104 automatically adjusts the gap so that the sealing member 103 and the pyrolysis reactor 2 are always in a sealed and fitted state, which can effectively prevent external air from entering the heating box 3 and effectively ensure the sealing performance.
[0030] In some of these embodiments, the fixing member includes a bolt and a nut; the sealing member 103 is a graphite sealing member 103.
[0031] To ensure the pressing effect of the fish scale 102 on the seal 103 and the sealed fit between the seal 103 and the cylinder body of the pyrolysis reactor 2, a number of cylinders 104 are evenly distributed circumferentially along the cylinder body of the externally rotating pyrolysis reactor 2. One end of the push rod of the cylinder 104 is fixedly connected with a pressing plate 105, and the pressing plate 105 is in contact with the side surface of the other end of the fish scale 102.
[0032] To further ensure the sealing performance at the dynamic and static joint of the heating box 3 and the cylinder body of the pyrolysis reactor 2, the fixing ring 101 is of a bent structure. One side surface of the bent structure abuts against the heating box 3, and the other side surface is sleeved outside the seal 103.
[0033] In some embodiments, the pressing plate 105 is arranged away from the heating box 3 and is in contact with the outside of the side surface of the other end of the fish scale 102. Further, the other side surface of the bent structure is sleeved outside the seal 103 and is located below the fish scale 102, and the other side surface of the bent structure is arranged in a staggered manner with the pressing plate 105, ensuring that the pressing effect of the pressing plate 105 on the fish scale 102 can be effectively transmitted to the seal 103, thereby ensuring the sealed fit between the seal 103 and the pyrolysis reactor 2. In some embodiments, each pressing plate 105 is correspondingly arranged with each split seal 103, and this arrangement can further ensure the pressing effect of the pressing plate 105 on the seal 103.
[0034] Further, a connecting seat 106 for installing the cylinder 104 is arranged on the pressing plate 105.
[0035] In some embodiments, the sealing device 1 is hermetically connected to the dynamic and static joints at the front and rear ends of the externally rotating pyrolysis reactor 2 and the heating box 3.
[0036] The pyrolysis reactor 2 and the heating box 3 are in a dynamic and static fit, because the pyrolysis reactor 2 rotates outward, while the heating box 3 is stationary, there is high-temperature flue gas up to 800-900°C in the heating box 3, and the heating box 3 is operated under negative pressure, and the pyrolysis reactor 2 and the heating box 3 are sealed by the above-mentioned sealing device 1. In order to adapt to the movement and deformation of the pyrolysis reactor 2 in all aspects, a front sealing device 1 is provided on the left side of the heating box 3, and a rear sealing device 1 is also provided on the right side of the heating box 3. The sealing assembly mounting fixing ring 101 is installed at the left and right ends of the heating box 3, and there are mounting bolts of different numbers at a certain angle on it. The mounting bolts are used to fix the external special fish scales 102 of equal number on it, and then fixed with the fixing ring 101 nut. The flexible sealing of the fish scales 102 can well accommodate the graphite seal 103, and prevent the displacement of the graphite seal 103 caused by the axial movement and radial runout of the pyrolysis reactor 2. At the lower part of the fish scale 102, the outer diameter of the cylinder of the pyrolysis reactor 2 is arranged with 4 graphite seals 103 of the same arc as the outer diameter of the pyrolysis reactor 2, which are wrapped on the pyrolysis reactor 2. The graphite seals 103 are arranged in multiple pieces, and their main function is to prevent the radial expansion of the pyrolysis reactor 2 and facilitate later replacement. At the tail of the surface of the fish scale 102, there are 4 sealing tensioning cylinders 104 clamping plates 105, which are tightly attached to the fish scale 102. The fish scale 102 clamping plate 105 is provided with a mounting cylinder 104 connecting seat 106, which is fixed with the tensioning cylinder 104. When the graphite seal 103 is worn, the tensioning cylinder 104 automatically adjusts the gap, so that the graphite seal 103 and the pyrolysis reactor 2 are always in a sealed fit state, which can effectively prevent external air from entering the heating box 3.
[0037] like Figure 6As shown, the pyrolysis reactor 2 is the main component of pyrolysis. The feeding direction is generally from the left side. The pyrolysis materials crushed in the pretreatment workshop enter the feeding screw conveyor through the closed conveying device, and are pushed into the pyrolysis reactor 2 for pyrolysis after being extruded by the feeding screw conveyor. On the left side of the pyrolysis reactor 2 is a reduced-diameter connecting pipe, and the feeding screw conveyor runs into it. An outer sleeve of the reduced-diameter connecting pipe cylinder is provided with a front static-dynamic mating seal sleeve, and the front static-dynamic mating seal sleeve is filled with sealing packing. The right-side inlet of the sealing packing is pressed by a sealing sleeve pressing cover to form a static-dynamic fit. A passive gear ring is arranged on the left-side cylinder of the pyrolysis reactor 2, and it forms a fit with the driving gear assembly to drive the operation of the pyrolysis reactor 2. The driving gear assembly and the driving base are arranged on the lower right side of the left-side cylinder of the pyrolysis reactor 2, the main driving reducer is arranged on the left side, and the driving gear assembly is connected to the main driving reducer through a coupling. The pyrolysis reactor 2 is internally provided with spiral blades, which can move the incoming pyrolysis materials to the right side. The bottom materials and oil vapor finally enter the rear sealing bin for separation. A front wheel belt assembly is arranged on the left side of the cylinder of the pyrolysis reactor 2, and a rear supporting wheel assembly is arranged on the right side of the cylinder. The two groups of supporting wheels jointly act to lift the pyrolysis reactor 2 to run smoothly.
[0038] Regarding the heating box 3, the heating box 3, the hot blast stove and the high-temperature flue gas conveying pipeline input the heat required for pyrolysis through the high-temperature flue gas inlet. The high-temperature flue gas inlet is arranged at the lower right side of the heating box 3, and the flue gas outlet is vertically arranged at the upper left side of the heating box 3. A remote temperature sensor is vertically arranged on the upper part of the heating box 3, which is interlocked with the burner of the hot blast stove to control the heating temperature in the heating box 3. A remote pressure sensor is vertically arranged on the upper part of the heating box 3, which is interlocked with the fan of the external desulfurization system to control the pressure in the heating box 3. A heat preservation module is arranged in the heating box 3, and high-temperature flue gas guiding blades are arranged on the inner side of the heat preservation module to prevent the high-temperature flue gas from breaking. A rear static-dynamic mating seal sleeve is arranged on the right side of the pyrolysis reactor 2, and it forms a static-dynamic fit with the docking port of the pyrolysis reactor 2 arranged on the rear sealing bin. A remote temperature sensor is vertically arranged on the upper part of the left-side bin body of the rear sealing bin, which is interlocked with the burner of the hot blast stove to control the temperature in the bin. A remote pressure sensor is vertically arranged on the upper part of the right-side bin body of the rear sealing bin, which is interlocked with the peripheral negative pressure extraction system to control the pressure of the pyrolysis system. The high-temperature oil vapor outlet is arranged at the upper right part of the bin body and is connected to the condensation system to cool and store the high-temperature oil vapor. An observation hole is arranged in the middle of the right side of the bin body of the rear sealing bin, and the slag discharge port of the rear sealing bin is arranged at the bottom of the bin body, and the discharged slag is sent to the next process for treatment.
[0039] The above-mentioned sealing device has the following characteristics:
[0040] 1. To adapt to the movement and deformation of the cylinder in all aspects, a sealing device 1 is provided on the left and right sides of the heating box 3. It mainly uses multiple graphite seals 103 on the outside of the pyrolysis reactor 2 to wrap around the pyrolysis reactor 2 to prevent air leakage. The graphite seal 103 is divided into multiple pieces, and its main function is to prevent the radial expansion of the pyrolysis reactor 2 and facilitate later replacement.
[0041] 2. A sealing assembly mounting ring 101 is installed at the left and right ends of the heating box body 3, on which mounting bolts of varying numbers are arranged at a certain angle. The external special fish scale 102 is fixed thereon by the mounting bolts. The flexible sealing of the fish scale 102 can well accommodate the axial movement and radial runout of the graphite seal 103.
[0042] 3. Four sealing tensioning cylinder clamping plates 105 are arranged at the tail of the surface of the special fish scale 102. The sealing tensioning cylinder 104 clamping plate is tightly attached to the fish scale 102. A mounting cylinder connecting seat 106 is arranged on the clamping plate 105. The connecting seat 106 is fixed with the tensioning cylinder 104. When the graphite seal 103 is worn, the tensioning cylinder 104 automatically adjusts the gap so that the graphite seal 103 and the pyrolysis reactor 2 are always in a fitting state.
[0043] 4. High temperature resistance, wear resistance and long service life. The key sealing components use self-lubricating and wear-resistant graphite seals 103, and the externally pressed and stacked fish scale sealing sheets are closed in structure, with simple structure, good sealing effect and long service life.
[0044] The working process of the sealing device 1 of the pyrolysis reactor 2 and the heating box 3 is as follows:
[0045] During the operation of the external rotating pyrolysis reactor 2, the fish scales 102 press the seal 103 to achieve a sealed fit between the seal 103 and the cylinder of the pyrolysis reactor 2, thereby ensuring the sealing of the dynamic and static joints between the external rotating pyrolysis reactor 2 and the heating box 3. When the seal 103 is worn, the cylinder 104 automatically adjusts the gap so that the seal 103 and the pyrolysis reactor 2 are always in a sealed fit state, which can effectively prevent external air from entering the heating box 3 and effectively ensure the sealing.
[0046] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0047] The above embodiments only illustrate several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.
Claims
1. A sealing device for a pyrolysis reactor and a heating box body, characterized in that Sealingly connected to the dynamic and static joint of the external rotary pyrolysis reactor and the heating box body, including: A fixing ring, which is sleeved outside the cylinder body of the external rotary pyrolysis reactor and is located outside the heating box body, and one end face abuts against the heating box body; Scales, one end of the scales is arranged close to the heating box body and is fixed on the fixing ring through fixing parts, the other end of the scales extends away from the heating box body and fits on the cylinder body of the external rotary pyrolysis reactor, and several of the scales are evenly distributed along the circumferential direction of the cylinder body of the external rotary pyrolysis reactor; A sealing member, which is sleeved outside the cylinder body of the external rotary pyrolysis reactor and is arranged below the scales, the sealing member is of a split structure, and the sealing member has the same radian as the outer diameter of the external rotary pyrolysis reactor; A cylinder, the push rod of the cylinder pushes the side surface of the other end of the scales to make the side surface of the other end of the scales fit the outer side surface of the sealing member, and the inner side surface of the sealing member fits the first position of the outer side surface of the cylinder body of the external rotary pyrolysis reactor.
2. The sealing device for the pyrolysis reactor and the heating box according to claim 1, wherein Several of the cylinders are evenly distributed along the circumferential direction of the cylinder body of the external rotary pyrolysis reactor, one end of the push rod of the cylinder is fixedly connected with a pressing plate, and the pressing plate fits the side surface of the other end of the scales.
3. The sealing device of the pyrolysis reactor and the heating box according to claim 2, characterized in that, The fixing ring is of a bent structure, one side surface of the bent structure abuts against the heating box body, and the other side surface is sleeved outside the sealing member.
4. The sealing device of the pyrolysis reactor and the heating box according to claim 3, characterized in that, The pressing plate is arranged away from the heating box body and fits outside the side surface of the other end of the scales.
5. The sealing device for the pyrolysis reactor and the heating box according to claim 4, characterized in that, The other side surface of the bent structure is sleeved outside the sealing member and is located below the scales, and the other side surface of the bent structure is arranged out of position with the pressing plate.
6. The sealing device of the pyrolysis reactor and the heating box according to claim 1, characterized in that, The fixing parts include bolts and nuts.
7. The sealing device for the pyrolysis reactor and the heating box according to claim 1, characterized in that, The sealing member is a graphite sealing member.
8. The sealing device for the pyrolysis reactor and the heating box according to claim 2, characterized in that, A connecting seat for installing the cylinder is arranged on the pressing plate.
9. The sealing device for the pyrolysis reactor and the heating box according to claim 2, wherein, Each of the pressing plates is arranged corresponding to each of the split-structured sealing members.
10. The sealing device for the pyrolysis reactor and the heating box according to claim 1, characterized in that, The sealing device is sealingly connected to the dynamic and static joints at the front and rear ends of the external rotary pyrolysis reactor and the heating box body.