Self-cleaning furnace tube of cracking furnace

Abstract

The utility model discloses a self-cleaning furnace tube of a cracking furnace, and relates to the technical field of cleaning of furnace tubes of cracking furnaces. Comprising a furnace tube body, the furnace tube body is internally provided with a rotary scraping assembly, the rotary scraping assembly comprises a plurality of connecting rods arranged in the furnace tube body, the connecting rods are horizontally and symmetrically arranged on the circumference, the bottom of each connecting rod is provided with a collecting assembly, and each collecting assembly comprises a ring tube arranged on the bottom face of the corresponding connecting rod and a plurality of air inlet tubes arranged on the circumference of the outer side face of the ring tube; the air inlet pipe corresponds to the connecting rod, and a collecting fan is arranged in the air inlet pipe. Through the arrangement of the collecting assembly and the rotary scraping assembly, the spline housing, the whole scraper and the whole annular pipe vertically move and rotate on the spline shaft, it is guaranteed that the scraper scrapes ash on the inner wall of the furnace pipe body, the ash is collected in the annular pipe in time through the air inlet pipe, cleaning is more complete, and the cleaning efficiency is improved. Dust is prevented from being accumulated in the furnace tube body, and the using effect of the furnace tube body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cracking furnace tube cleaning, in particular to a self-cleaning furnace tube of a cracking furnace. Background Art

[0002] The cracking reaction is a highly endothermic reaction that occurs at high temperatures. The cracking furnace structure is divided into a radiation section and a convection section from bottom to top. The radiation section provides heat for the cracking reaction and is the place where the cracking reaction occurs. During the use of the furnace tube, dust will adhere to its inner wall when it is transported inside the furnace tube, so the furnace tube needs to be cleaned regularly.

[0003] An existing self-cleaning furnace tube for a cracking furnace (authorization announcement number: CN220507751U) has the following defects: the furnace tube simultaneously drives two threaded rods to rotate through two bevel gears, so that two connecting blocks on the surface of the furnace tube simultaneously drive the scraper to move, so that the scraper scrapes off the dust attached to the inner wall of the furnace tube. However, after the scraper scrapes off the dust attached to the inner wall of the furnace tube, it is not cleaned in time, which easily leads to dust accumulation in the furnace tube, thereby affecting the use effect of the furnace tube. Therefore, the present utility model is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a self-cleaning furnace tube for a cracking furnace to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-cleaning furnace tube of a cracking furnace, comprising a furnace tube body, a rotating scraping assembly arranged inside the furnace tube body, the rotating scraping assembly comprising a connecting rod arranged inside the furnace tube body, a plurality of connecting rods being arranged horizontally and symmetrically around the circumference, a collecting assembly being arranged at the bottom of the connecting rod, the collecting assembly comprising an annular tube arranged on the bottom surface of the connecting rod, a plurality of air inlet pipes being arranged around the circumference of the outer side surface of the annular tube, the air inlet pipes being arranged corresponding to the connecting rod, a collecting fan being arranged inside the air inlet pipe, a plurality of inverted L-plates being fixed around the circumference of the top surface of the annular tube, the inverted L-plates being horizontally inserted on the connecting rod, a fixing rod being fixed on one end face of the inverted L-plate, a rotating baffle being rotatably sleeved on the fixing rod, and the rotating baffle being in contact with a side face of the connecting rod.

[0006] Preferably, the rotary scraping assembly further comprises a first transverse plate fixed at the top end of the furnace tube body, a second transverse plate fixed at the bottom end of the furnace tube body, and a first vertical rod rotatably inserted in the middle of the first transverse plate.

[0007] Preferably, a second vertical rod is rotatably inserted in the middle of the second transverse plate, a spline shaft is fixed between the second vertical rod and the first vertical rod, and a spline sleeve is adapted to be provided on the spline shaft.

[0008] Preferably, a first bevel gear is fixedly mounted on the first vertical rod, a second bevel gear is meshed with one side of the first bevel gear, a driving rod is fixedly inserted into the middle axis of the second bevel gear, and an L-shaped plate is rotatably mounted on the outer end of the driving rod.

[0009] Preferably, the L-shaped plate is fixedly arranged on the outer wall of the furnace tube body, the outer end of the driving rod is connected to a rotating motor installed on the L-shaped plate, and a mounting box is fixed on the first horizontal plate.

[0010] Preferably, a ring plate is fixed on the bottom of the first vertical rod, an electric telescopic rod is connected between the ring plate and the connecting rod located on one side, the connecting rod is fixed to the spline sleeve, and a scraper is connected to the outer end of the connecting rod, which contacts and fits with the inner wall of the furnace tube body.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The self-cleaning furnace tube of the cracking furnace is provided with a collecting component and a rotating scraping component. The spline sleeve, the scraper as a whole and the ring tube as a whole move vertically and rotate on the spline shaft, so that the scraper can scrape the dust from the inner wall of the furnace tube body and collect it in time inside the ring tube through the air inlet pipe, so that the cleaning is more complete, the accumulation of dust in the furnace tube body is avoided, and the use effect of the furnace tube body is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 It is a three-dimensional structural diagram of part of the structure of the utility model;

[0016] Figure 4 For the utility model Figure 3 Schematic diagram of the enlarged structure of part A.

[0017] In the figure: 1. furnace tube body; 101. first horizontal plate; 102. second horizontal plate; 2. first vertical rod; 201. spline shaft; 202. second vertical rod; 203. first bevel gear; 204. second bevel gear; 205. driving rod; 206. L-shaped plate; 3. ring plate; 301. spline sleeve; 302. connecting rod; 303. scraper; 304. electric telescopic rod; 4. ring tube; 401. air inlet pipe; 402. collecting fan; 403. inverted L-plate; 404. fixing rod; 405. rotating stop lever. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] During the operation of the cracking furnace, furnace tubes are required. The furnace tubes provided by the present invention are specially provided with a rotating scraping assembly and a collecting assembly, which ensure that the dust adhering to the inner wall of the furnace tube body 1 is scraped off and cleaned and collected in time, thereby ensuring the use effect of the furnace tube. During the use of the furnace tube, it is necessary to carry out preparatory work such as inspection in advance to ensure the normal use of the furnace tube.

[0020] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a self-cleaning furnace tube of a cracking furnace, comprising a furnace tube body 1, a rotating scraping assembly is arranged inside the furnace tube body 1, the rotating scraping assembly comprises a connecting rod 302 arranged inside the furnace tube body 1, a plurality of connecting rods 302 are arranged horizontally symmetrically around the circumference, a collecting assembly is arranged at the bottom of the connecting rod 302, the collecting assembly comprises a ring tube 4 arranged on the bottom surface of the connecting rod 302, a plurality of air inlet pipes 401 are arranged on the outer side of the ring tube 4, and the air inlet pipes 401 and the connecting rod 302 are arranged horizontally symmetrically around the circumference. 2 is configured accordingly. A collecting fan 402 is provided in the air inlet pipe 401. A plurality of inverted L-plates 403 are fixed to the circumference of the top surface of the annular tube 4. The inverted L-plates 403 are horizontally inserted into the connecting rod 302. A fixing rod 404 is fixed to one end surface of the inverted L-plate 403. A rotating baffle 405 is rotatably sleeved on the fixing rod 404. The rotating baffle 405 contacts one side surface of the connecting rod 302. The collecting fan 402 is a prior art ducted fan. The bottom of the annular tube 4 is easy to disassemble for easy dust dumping.

[0021] In an embodiment, the rotating scraping assembly also includes a first horizontal plate 101 fixed at the top end of the furnace tube body 1, a second horizontal plate 102 fixed at the bottom end of the furnace tube body 1, a first vertical rod 2 is rotatably inserted in the middle of the first horizontal plate 101, and a second vertical rod 202 is rotatably inserted in the middle of the second horizontal plate 102. A spline shaft 201 is fixed between the second vertical rod 202 and the first vertical rod 2, and a spline sleeve 301 is adapted to be provided on the spline shaft 201, wherein the spline shaft 201 and the spline sleeve 301 are prior art.

[0022] In the embodiment, a first bevel gear 203 is fixedly mounted on the first vertical rod 2, a second bevel gear 204 is meshed with one side of the first bevel gear 203, a driving rod 205 is fixedly inserted into the central axis of the second bevel gear 204, an L-shaped plate 206 is rotatably mounted on the outer end of the driving rod 205, the L-shaped plate 206 is fixedly mounted on the outer wall of the furnace tube body 1, the outer end of the driving rod 205 is connected to a rotating motor mounted on the L-shaped plate 206, and an installation box is fixed on the first horizontal plate 101, wherein the first bevel gear 203 and the second bevel gear 204 are existing technologies, and the rotating motor adopts a servo motor with a self-locking function in the existing technology.

[0023] In the embodiment, a ring plate 3 is fixedly mounted on the bottom of the first vertical rod 2, and an electric telescopic rod 304 is connected between the ring plate 3 and the connecting rod 302 located on one side. The connecting rod 302 is fixed to the spline sleeve 301, and the outer end of the connecting rod 302 is connected to a scraper 303. The scraper 303 is in contact with and adapted to the inner wall of the furnace tube body 1. Through the arrangement of the collecting component and the rotating scraping component, the spline sleeve 301 and the scraper 303 as a whole and the ring tube 4 as a whole are vertically moved and rotated on the spline shaft 201 to ensure that the scraper 303 scrapes the dust from the inner wall of the furnace tube body 1 and collects it in time inside the ring tube 4 through the air inlet pipe 401, so that the cleaning is more complete, dust is avoided from accumulating in the furnace tube body 1, and the use effect of the furnace tube body 1 is ensured. Among them, the electric telescopic rod 304 adopts the electric telescopic rod in the prior art.

[0024] Working principle: When the furnace tube is cleaning, the rotating motor, the electric telescopic rod 304 and the collecting fan 402 are controlled to start in an adaptive manner. The rotating motor causes the driving rod 205 and the second bevel gear 204 to rotate, and the second bevel gear 204 drives the first bevel gear 203, the first vertical rod 2, the ring plate 3, the spline shaft 201 and the second vertical rod 202 to rotate as a whole. The electric telescopic rod 304 is extended and retracted to drive the spline sleeve 301, the connecting rod 302, the scraper 303 and the ring tube 4 to perform a lifting operation as a whole. Under the engagement of the spline shaft 201 and the spline sleeve 301, the spline sleeve 301 rotates together with the spline shaft 201, ensuring that the scraper 303 rotates and moves up and down to scrape the inner wall of the furnace tube body 1. The scraped dust is collected inside the ring tube 4 through the air inlet pipe 401, and the ring tube 4 as a whole is easy to disassemble and install.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the accompanying embodiments and their equivalents.

Claims

1. A self-cleaning furnace tube for a cracking furnace, comprising a furnace tube body (1), characterized in that: A rotary scraping assembly is provided inside the furnace tube body (1), and the rotary scraping assembly comprises a connecting rod (302) provided inside the furnace tube body (1), a plurality of connecting rods (302) are provided horizontally and symmetrically on the circumference thereof, a collecting assembly is provided at the bottom of the connecting rod (302), and the collecting assembly comprises a ring tube (4) provided on the bottom surface of the connecting rod (302), a plurality of air inlet pipes (401) are provided on the circumference of the outer side surface of the ring tube (4), the air inlet pipes (401) and the connecting rod (302) are provided correspondingly, a collecting fan (402) is provided in the air inlet pipe (401), a plurality of inverted L-plates (403) are fixed on the circumference of the top surface of the ring tube (4), the inverted L-plates (403) are horizontally inserted on the connecting rod (302), a fixing rod (404) is fixed on one end surface of the inverted L-plate (403), a rotating stop rod (405) is rotatably sleeved on the fixing rod (404), and the rotating stop rod (405) contacts one side surface of the connecting rod (302).

2. The self-cleaning furnace tube of a cracking furnace according to claim 1, characterized in that: The rotary scraping assembly further comprises a first transverse plate (101) fixed to the top end of the furnace tube body (1), a second transverse plate (102) fixed to the bottom end of the furnace tube body (1), and a first vertical rod (2) rotatably inserted in the middle of the first transverse plate (101).

3. The self-cleaning furnace tube of a cracking furnace according to claim 2, characterized in that: A second vertical rod (202) is rotatably inserted in the middle of the second transverse plate (102), a spline shaft (201) is fixed between the second vertical rod (202) and the first vertical rod (2), and a spline sleeve (301) is adapted and matched on the spline shaft (201).

4. The self-cleaning furnace tube of a cracking furnace according to claim 3, characterized in that: A first bevel gear (203) is fixedly sleeved on the first vertical rod (2), a second bevel gear (204) is meshed on one side of the first bevel gear (203), a driving rod (205) is fixedly inserted into the middle axis of the second bevel gear (204), and an L-shaped plate (206) is rotatably sleeved on the outer end of the driving rod (205).

5. The self-cleaning furnace tube of a cracking furnace according to claim 4, characterized in that: The L-shaped plate (206) is fixedly arranged on the outer wall of the furnace tube body (1); the outer end of the driving rod (205) is connected to a rotating motor installed on the L-shaped plate (206); and a mounting box is fixed on the first transverse plate (101).

6. The self-cleaning furnace tube of a cracking furnace according to claim 5, characterized in that: A ring plate (3) is fixedly mounted on the bottom of the first vertical rod (2); an electric telescopic rod (304) is connected between the ring plate (3) and a connecting rod (302) located on one side; the connecting rod (302) is fixed to a spline sleeve (301); a scraper (303) is connected to the outer end of the connecting rod (302); and the scraper (303) contacts and fits with the inner wall of the furnace tube body (1).

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