Shaft sealing device of garbage cracking furnace

Abstract

The utility model discloses a shaft sealing device for a garbage cracking furnace, which belongs to the technical field of cracking furnace equipment and is characterized by comprising a cracking furnace shell, a sealing shell and a sealing ring component, a groove is arranged on the cracking furnace shell, the sealing shell is mounted in the groove, the sealing ring component is integrally formed by an outer sealing ring and an inner sealing ring, and the outer sealing ring and the inner sealing ring are arranged in the groove. An annular V-shaped groove is formed in the inner wall of the inner sealing ring, a first cavity is formed between the outer sealing ring and the inner sealing ring, the annular V-shaped groove and the rotating shaft form a second cavity, a vent hole is formed between the first cavity and the second cavity, a one-way air valve is installed in the vent hole, and the input end of the one-way air valve faces the second cavity. A gas guide pipe communicated with the first cavity is arranged on one side wall of the inner sealing ring, the gas guide pipe penetrates through the sealing shell and is exposed on the outer surface of the sealing shell, and a gas pressure detection assembly is installed at the end, exposed on the outer surface of the sealing shell, of the gas guide pipe.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the pyrolysis furnace equipment technical field, more specifically, it relates to a kind of garbage pyrolysis furnace shaft sealing device. BACKGROUND

[0002] Garbage pyrolysis furnace is a kind of equipment for treating solid waste such as domestic garbage, industrial garbage, which converts garbage into combustible gas, tar and solid residue by high-temperature pyrolysis. In the cracking process, rotating shaft is used to drive stirring device or conveying device in the furnace, and its sealing performance directly affects the operation efficiency and safety of the cracking furnace.

[0003] Traditional shaft sealing device may have the problem of not being tightly sealed, which leads to gas leakage, affects the cracking efficiency and may cause environmental pollution, and the traditional shaft sealing device does not have detection function, therefore, a new type of garbage pyrolysis furnace shaft sealing device is needed to solve the above problems. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a garbage pyrolysis furnace shaft sealing device, which has the advantages of preventing gas leakage and detecting sealing state.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A garbage pyrolysis furnace shaft sealing device, comprising a cracking furnace shell, a sealing shell, a sealing ring assembly, a groove is formed on the cracking furnace shell, the sealing shell is installed in the groove, the sealing ring assembly is integrally formed by an outer sealing ring and an inner sealing ring, the sealing ring assembly is arranged on the inner side of the sealing shell, an annular V groove is formed on the inner wall of the inner sealing ring, a first chamber is provided between the outer sealing ring and the inner sealing ring;

[0007] The inner sealing ring is sleeved on the rotating shaft and forms a sealing surface with the rotating shaft, the annular V groove forms a second chamber with the rotating shaft, a gas passage is provided between the first chamber and the second chamber, a one-way air valve is installed in the gas passage, the input end of the one-way air valve is arranged towards the second chamber, a gas guide pipe is provided on one side wall of the inner sealing ring and is in communication with the first chamber, the gas guide pipe penetrates through the sealing shell and is exposed on the outer surface of the sealing shell, a gas pressure detection assembly is installed on the end of the gas guide pipe exposed on the outer surface of the sealing shell.

[0008] According to the advantages of the scheme, the sealing ring assembly is integrally formed, which is convenient to install, improves the sealing performance and structural strength, the first cavity is arranged, the annular V-shaped groove is arranged, and the second cavity is formed with the rotating shaft, when gas leaks, the gas enters the second cavity first, the second cavity buffers, when the second cavity is filled with gas, the one-way gas valve is opened under the action of the gas pressure, and the gas enters the first cavity, when the gas continues to leak, the gas pressure detection assembly arranged at the end of the gas guide pipe issues a warning.

[0009] The utility model further sets up: install the sealing compression plate in the recess, the sealing compression plate is covered in the rotating shaft, install rectangular sealing ring in the contact of sealing compression plate and rotating shaft.

[0010] According to the advantages of the scheme, the sealing compression plate and the rotating shaft are tightly contacted with the rectangular sealing ring, which can preliminarily block the gas from running out of the cracking furnace, and the sealing ring assembly can achieve good sealing effect.

[0011] The utility model further sets up: the surface that rotating shaft and the inner wall contact of inner sealing ring all is equipped with micro nano level texture structure, the texture structure is formed through laser etching process.

[0012] According to the advantages of the scheme, the texture structure can effectively improve the contact form between the inner sealing ring and the rotating shaft, so that it can still maintain good sealing effect under the condition of slight displacement and pressure change, and prevent gas leakage.

[0013] The utility model further sets up: the gas pressure detection assembly includes: barometer and alarm, and the barometer and alarm are electrically connected through controller and wire.

[0014] According to the advantages of the scheme, when the barometer detects that the gas pressure of the stored gas in the first cavity exceeds the predetermined range, the controller outputs a signal to the alarm, so that the alarm is triggered to issue an alarm, thereby facilitating the staff to handle.

[0015] The utility model further sets up: install first sealing pad between the recess and sealing shell, install second sealing pad between sealing shell and sealing ring assembly.

[0016] According to the advantages of the scheme, the first sealing pad and the second sealing pad respectively improve the sealing performance between the sealing shell and the cracking furnace shell and the sealing performance between the sealing shell and the sealing assembly, thereby reducing the risk of harmful gas leakage.

[0017] The present invention is further configured such that: an installation flange is provided at the end of the sealing shell, and the installation flange is connected to the pyrolysis furnace shell by bolts.

[0018] The advantages of this scheme are at least as follows: the flange is connected by bolts, which makes the connection between the sealing shell and the pyrolysis furnace shell very stable. At the same time, the flange installation structure using bolt connection is relatively simple, and construction can be completed quickly, improving installation efficiency.

[0019] In summary, this utility model has at least the following advantages:

[0020] 1. By setting up a sealing shell, sealing ring assembly, and air pressure detection assembly, the sealing ring assembly is integrally molded, which not only makes installation more convenient, but also helps to improve sealing performance and structural strength. By setting up a first chamber and an annular V-groove, a second chamber is formed with the rotating shaft. When gas leaks, it will preferentially enter the second chamber, which acts as a buffer. When the second chamber is full of gas, the one-way valve is opened under the action of air pressure, allowing gas to enter the first chamber. When gas leaks continuously, the first chamber is filled with gas, and the air pressure detection assembly installed at the end of the gas guide tube will issue an early warning.

[0021] 2. By setting a sealing pressure plate and a rectangular sealing ring, the tight contact between the sealing pressure plate and the rotating shaft, combined with the rectangular sealing ring, can initially prevent gas from escaping from the pyrolysis furnace. In addition, the sealing ring assembly can achieve a good sealing effect. Attached Figure Description

[0022] Figure 1 This is a schematic cross-sectional view of the entire embodiment;

[0023] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0024] Figure 3 for Figure 2 Enlarged diagram of part B.

[0025] Reference numerals: 1. Cracking furnace shell; 101. Groove; 2. Sealing shell; 3. Sealing ring assembly; 301. Outer sealing ring; 302. Inner sealing ring; 4. Annular V-groove; 5. First chamber; 6. Second chamber; 7. Vent hole; 8. One-way gas valve; 9. Gas guide pipe; 10. Gas pressure detection assembly; 1001. Gas pressure gauge; 1002. Alarm; 11. Sealing plate; 12. Rectangular sealing ring; 13. First sealing gasket; 14. Second sealing gasket; 15. Mounting flange. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] A waste pyrolysis furnace shaft sealing device, such as Figure 1 As shown, it includes a pyrolysis furnace shell 1, a sealing shell 2, and a sealing ring assembly 3. The end of the sealing shell 2 is provided with a mounting flange 15, which is connected to the pyrolysis furnace shell 1 by bolts.

[0028] like Figure 1 , Figure 2 As shown, a groove 101 is provided on the shell 1 of the pyrolysis furnace, and the sealing shell 2 is installed in the groove 101. The sealing ring assembly 3 is integrally formed by the outer sealing ring 301 and the inner sealing ring 302. The sealing ring assembly 3 is located on the inner side of the sealing shell 2. An annular V groove 4 is provided on the inner wall of the inner sealing ring 302. A first chamber 5 is provided between the outer sealing ring 301 and the inner sealing ring 302.

[0029] The inner sealing ring 302 is fitted onto the rotating shaft and contacts the shaft to form a sealing surface. The annular V-groove 4 forms a second chamber 6 with the rotating shaft. A vent hole 7 is provided between the first chamber 5 and the second chamber 6. A one-way valve 8 is installed in the vent hole 7, with the input end of the one-way valve 8 facing the second chamber 6. A vent pipe 9, which communicates with the first chamber 5, is provided on one side wall of the inner sealing ring 302. The vent pipe 9 penetrates the sealing housing 2 and is exposed on the outer surface of the sealing housing 2. A pressure detection component 10 is installed at the end of the vent pipe 9 exposed on the outer surface of the sealing housing 2. Figure 3 As shown, the air pressure detection assembly 10 includes: an air pressure gauge 1001 and an alarm 1002, which are electrically connected via a controller (not shown) and wires.

[0030] like Figure 2 As shown, a sealing plate 11 is installed in the groove 101. The sealing plate 11 is fitted onto the rotating shaft. A rectangular sealing ring 12 is installed at the contact point between the sealing plate 11 and the rotating shaft. The tight contact between the sealing plate 11 and the rotating shaft, combined with the rectangular sealing ring 12, can initially prevent gas from escaping from the pyrolysis furnace. In conjunction with the sealing ring assembly 3, a good sealing effect can be achieved.

[0031] In some embodiments, micro-nano-scale textured structures (not shown in the figure) are provided on the surfaces of the rotating shaft and the inner wall of the inner sealing ring 302 that are in contact. The textured structures are formed by laser etching. The textured structures can effectively improve the contact morphology between the inner sealing ring 302 and the rotating shaft, so that it can maintain a good sealing effect under small displacement and pressure changes and prevent gas leakage.

[0032] like Figure 2As shown, a first sealing gasket 13 is installed between the groove 101 and the sealing shell 2, the first sealing gasket 13 improves the sealing between the sealing shell 2 and the cracking furnace shell 1, and a second sealing gasket 14 is installed between the sealing shell 2 and the sealing ring assembly 3, the second sealing gasket 14 improves the sealing between the sealing shell 2 and the sealing assembly, thereby further reducing the risk of harmful gas leakage.

[0033] The working process and beneficial effects of the utility model are as follows:

[0034] When the gas leaks, it will enter the second chamber 6 first, and the second chamber 6 plays a buffering role; when the gas fills the second chamber 6, the one-way air valve 8 is opened under the action of air pressure, and the gas enters the first chamber 5; when the gas continues to leak, the first chamber 5 is filled with gas; when the gas pressure gauge 1001 detects that the air pressure of the stored gas in the first chamber 5 exceeds the predetermined setting range, the controller outputs a signal to the alarm 1002, so that the alarm 1002 is triggered to issue an alarm, thereby facilitating the work personnel to handle.

[0035] The above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, any modification, equivalent replacement, improvement, etc. within the design concept of the utility model should be included in the protection scope of the utility model.

Claims

1. A waste cracking furnace shaft sealing device, comprising a cracking furnace shell (1), a sealing shell (2), and a sealing ring assembly (3), characterized in that: The cracking furnace shell (1) is provided with a groove (101), the sealing shell (2) is installed in the groove (101), the sealing ring assembly (3) is integrally formed by an outer sealing ring (301) and an inner sealing ring (302), the sealing ring assembly (3) is arranged on the inner side of the sealing shell (2), an annular V groove (4) is formed in the inner wall of the inner sealing ring (302), and a first cavity (5) is arranged between the outer sealing ring (301) and the inner sealing ring (302); The inner sealing ring (302) is sleeved on the rotating shaft and forms a sealing surface in contact with the rotating shaft, the annular V groove (4) forms a second cavity (6) with the rotating shaft, the first cavity (5) and the second cavity (6) are provided with a vent hole (7), the vent hole (7) is provided with a one-way air valve (8), the input end of the one-way air valve (8) is arranged towards the second cavity (6), a gas guide pipe (9) is arranged on one side wall of the inner sealing ring (302) and is in communication with the first cavity (5), the gas guide pipe (9) penetrates through the sealing shell (2) and is exposed on the outer surface of the sealing shell (2), and a gas pressure detection assembly (10) is arranged at the end of the gas guide pipe (9) exposed on the outer surface of the sealing shell (2).

2. A shaft seal device for a waste pyrolysis furnace according to claim 1, characterized in that: A sealing pressing plate (11) is arranged in the groove (101), the sealing pressing plate (11) is sleeved on the rotating shaft, and a rectangular sealing ring (12) is arranged at the contact position of the sealing pressing plate (11) and the rotating shaft.

3. The shaft seal device for a waste pyrolysis furnace according to claim 1, characterized in that: The surface of the rotating shaft and the inner wall of the inner sealing ring (302) are provided with micro-nano texture structures, and the texture structures are formed by a laser etching process.

4. The shaft seal apparatus of claim 1, wherein: The gas pressure detection assembly (10) comprises a gas pressure gauge (1001) and an alarm (1002), and the gas pressure gauge (1001) and the alarm (1002) are electrically connected through a controller and wires.

5. A shaft seal for a waste pyrolysis furnace according to claim 4, wherein: A first sealing gasket (13) is arranged between the groove (101) and the sealing shell (2), and a second sealing gasket (14) is arranged between the sealing shell (2) and the sealing ring assembly (3).

6. A shaft seal for a waste pyrolysis furnace according to claim 5, wherein: An installation flange (15) is arranged at the end of the sealing shell (2), and the installation flange (15) is connected with the cracking furnace shell (1) through bolts.

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