Anti-coking spraying device for combustion chamber of waste incinerator

Abstract

An anti-coking spraying device for the combustion chamber of a waste incinerator includes a pipe seat, a nozzle installed at the pipe opening, and a delivery pipe for conveying anti-coking coating connected to the end of the nozzle. A reciprocating power assembly for driving the delivery pipe to move back and forth is provided on the outside of the pipe seat. The nozzle and the delivery pipe are connected by a diameter-changing guide mechanism, which includes a central guide disc, a linkage knob, and multiple support rods. A linkage groove is formed in the middle of the side of the central guide disc facing the delivery pipe. The linkage knob is rotatably disposed within the linkage groove. Multiple unidirectional grooves are formed on the outer peripheral wall of the linkage knob. Multiple sliding grooves are formed on the central guide disc. The support rods slide through corresponding sliding grooves, with their tail ends sliding against corresponding grooves. Each support rod in the groove is fitted with a spring for its tail end to rest against the groove. A guide wheel is installed at the front end of each support rod against the incinerator wall. This invention is applicable to pipes of various specifications.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection material coating equipment, specifically an anti-coking spraying device for the combustion chamber of a waste incinerator. Background Technology

[0002] Waste disposal methods typically include incineration, landfill, composting, and recycling. Waste incineration generates a large amount of flue gas, which is discharged through exhaust pipes to external flue gas treatment equipment for further processing. The most common problem in exhaust pipes is coking on the inner walls, which can severely affect the normal operation of the waste incineration system. Current solutions to reduce coking include spraying an anti-coking chemical coating onto the inner walls of the exhaust pipes using a spraying device. This coating effectively reduces coking.

[0003] Chinese patent CN221934315U discloses an anti-coking pipe inner wall spraying device. This device clamps and fixes the pipe to be sprayed using left and right pipe seats. The moving sprayer in this device can pass through the pipe at a uniform speed from right to left to meet the requirement of forming a uniform coating on the inner wall of the pipe. The moving sprayer includes a base body and an infusion pipe. Several centering guide components are evenly distributed on the outer wall of the base body. An atomizing nozzle is installed on the left side of the base body, and the infusion pipe is threaded to the right side of the base body. A reciprocating power component, which is driven by the infusion pipe, is installed on the side of the right pipe seat. The centering guide component includes a connecting seat and an adjusting frame. The connecting seat is fixedly connected to the outer wall of the base body, and the adjusting frame is bolted to the connecting seat. A balance guide wheel is rotatably mounted on the adjusting frame.

[0004] However, in this spraying device, the connecting seat in the centering and guiding assembly is fixed to the outer wall of the device body, and the adjusting frame with guide wheels is bolted to the connecting seat. However, the length of the adjusting frame can only be used for pipes of a single specification, which limits its applicability. Utility Model Content

[0005] The present invention aims to provide an anti-coking spraying device for the combustion chamber of a waste incinerator, which is applicable to pipes of various specifications.

[0006] To solve the above technical problems, the specific solution adopted by this utility model is an anti-coking spraying device for the combustion chamber of a waste incinerator, including a pipe seat, a nozzle installed at the pipe opening of the pipe seat, a delivery pipe for conveying anti-coking coating material connected to the end of the nozzle, and a reciprocating power component for driving the delivery pipe to move back and forth on the outside of the pipe seat.

[0007] The nozzle and the infusion tube are connected by a variable diameter guide mechanism, which includes a central guide disc, a linkage knob and multiple support rods. A linkage groove is provided in the middle of the side of the central guide disc facing the infusion tube. The linkage knob is rotatably installed in the linkage groove. Multiple grooves distributed in the same direction are provided on the outer peripheral wall of the linkage knob along its circumference.

[0008] Multiple sliding grooves are provided on the central guide disc, and these grooves surround the linkage groove. The support rods slide through the corresponding sliding grooves, and the tail ends of the support rods slide against the corresponding wire grooves. Each support rod in the sliding groove is fitted with a spring so that the tail ends of the support rods can rest against the wire grooves. The front end of the support rods is equipped with guide wheels that rest against the furnace wall of the incinerator. The rotating linkage knob can push multiple support rods to extend or retract synchronously. After the linkage knob is rotated until the guide wheels rest against the furnace wall of the incinerator, they are fixed in the linkage grooves.

[0009] As another optimized solution for the anti-coking spraying device of the combustion chamber of the waste incinerator mentioned above: an upper threaded hole is provided on the top surface of the linkage knob along its thickness direction, and multiple lower threaded holes are provided at the bottom of the linkage groove. A fixing bolt for fixing the linkage knob is installed between the upper threaded hole and the lower threaded hole.

[0010] As another optimized solution for the anti-coking spraying device of the combustion chamber of the waste incinerator mentioned above: the number of chutes, wire grooves and support rods are all three, and the three chutes are evenly spaced around the linkage groove.

[0011] As another optimized solution for the anti-coking spraying device of the combustion chamber of the waste incinerator mentioned above: the diameter of the middle part of the chute is larger than the diameter of the outer port and the inner port of the chute, and an annular abutment is provided on the support rod, with a spring sleeved on the support rod between the annular abutment and the outer port of the chute.

[0012] As another optimized solution for the anti-coking spraying device of the combustion chamber of the waste incinerator mentioned above: the cross-sectional shape of the trough is V-shaped, and the shape of the end of the support rod is an arc that can slide and cooperate with the trough.

[0013] As another optimized solution for the anti-coking spraying device of the combustion chamber of the waste incinerator mentioned above: a connecting shaft is provided in the middle of the bottom surface of the linkage knob, and a bearing is provided at the center of the bottom of the linkage groove for the connecting shaft to pass through and rotate.

[0014] As another optimized solution for the anti-coking spraying device of the combustion chamber of the waste incinerator mentioned above: the linkage knob has a protruding linkage groove on its top surface, and a cross-shaped rotating handle is provided on the top surface of the linkage knob.

[0015] As another optimized solution for the anti-coking spraying device of the combustion chamber of the aforementioned waste incinerator: the guide wheels are respectively installed on the front end of the support rod via a rotating shaft.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In this invention, a central guide disc connects the nozzle and the infusion tube. Support rods slide through corresponding grooves. A linkage knob is rotatably positioned within a linkage groove located in the center of the outer side of the central guide disc. A guide wheel is installed at the front end of the support rod extending out of the groove, and the tail end of the support rod, after passing through the groove, abuts against a corresponding groove on the outer wall of the linkage knob. A spring fitted onto the support rod keeps it within the groove and abutting against the groove. When the linkage knob is rotated, the front end of the support rod extends synchronously with the position of the groove and abuts against the incinerator wall via the guide wheel. At this time, the linkage knob is fixed in the linkage groove to prevent the support rod from moving. By controlling the extension or retraction of the support rod against the incinerator wall through the rotation of the linkage knob, this device can be used for spraying incinerator walls of various diameters.

[0018] Furthermore, compared to the existing single adjustment bracket's telescopic length, this device can quickly and synchronously drive multiple support rods to extend or retract simultaneously through rotational linkage, making the amount of synchronous extension or retraction of the support rods more precise. This avoids situations where inconsistent support rod extension lengths affect the stable movement of the central guide disc and result in uneven spraying due to the nozzle not being in the center position. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the linkage between the linkage knob and the support rod of this utility model.

[0020] Figure 2 This is a schematic diagram of the linkage installation in the linkage slot of this utility model.

[0021] Reference numerals in the attached drawings: 1. Incinerator wall; 2. Support rod; 201. Guide wheel; 202. Rotating shaft; 203. Spring; 204. Annular abutment; 3. Central guide disc; 301. Slide groove; 302. Linkage groove; 4. Linkage knob; 401. Threaded hole; 402. Connecting shaft; 403. Wire groove; 404. Cross-shaped rotating handle. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts of this utility model that are not described in detail in the following embodiments, such as the structure of the nozzle, the specifications and model of the drive motor in the reciprocating power component, etc., should be understood as prior art known or should be known by those skilled in the art.

[0023] like Figure 1 and Figure 2As shown, an anti-coking spraying device for the combustion chamber of a waste incinerator includes a pipe seat, a nozzle, a liquid delivery pipe, a reciprocating power assembly, and a diameter-changing guide mechanism. The nozzle is located at the port of the pipe seat, the reciprocating power assembly is located on the outside of the pipe seat, and the liquid delivery pipe is located on the reciprocating power assembly. The inlet of the liquid delivery pipe is connected to a storage tank for storing anti-coking chemical coatings via a pipeline.

[0024] The nozzle inlet is connected to the outlet of the delivery pipe for conveying anti-coking chemical coating through a variable diameter guide mechanism. The variable diameter guide mechanism can move axially along the furnace wall 1 of the incinerator. Driven by the reciprocating power component, the variable diameter guide mechanism can be pushed along the furnace wall 1 of the incinerator through the delivery pipe, so that the anti-coking chemical coating is evenly sprayed onto the furnace wall 1 of the incinerator through the nozzle.

[0025] The variable diameter guiding mechanism includes a central guide disc 3, a linkage knob 4, and three support rods 2. The left end face of the central guide disc 3 is connected to the inlet of the nozzle, and the right end face of the central guide disc 3 is connected to the outlet of the infusion tube. A Z-shaped connecting pipe (not shown in the figure) is opened inside the central guide disc 3. One end of the Z-shaped connecting pipe is located in the middle of the left end face of the central guide disc 3, and the other end is located in the lower middle of the right end face of the central guide disc 3. The nozzle and the infusion tube are detachably connected to the central guide disc 3.

[0026] A circular linkage groove 302 is formed in the middle of the right end face of the central guide disc 3 along its thickness direction. The linkage knob 4 is rotatably mounted in the linkage groove 302. A mounting groove is formed at the center of the bottom of the linkage groove 302, and a bearing is installed in the mounting groove. A connecting shaft 402 is fixed in the middle of the bottom surface of the linkage knob 4. One end of the connecting shaft 402 is fixed to the linkage knob 4, and the other end passes through the bearing, so that the linkage knob 4 can be rotatably mounted in the linkage groove 302.

[0027] Three grooves 403 are formed in the same direction on the outer peripheral wall of the linkage knob 4. The cross-sectional shape of the grooves 403 is V-shaped, and the three grooves 403 are evenly spaced along the circumference of the linkage knob 4. Three sliding grooves 301 are evenly spaced along the circumference of the central guide disc 3. The outer port of the sliding groove 301 is located on the outer peripheral wall of the central guide disc 3, and the inner port of the sliding groove 301 is connected to the linkage groove 302.

[0028] Three support rods 2 are slidably disposed within the slide groove 301. The front end of the support rod 2 protrudes from the outer port of the slide groove 301, and the tail end of the support rod 2 protrudes from the inner port of the slide groove 301. The diameters of both the outer and inner ports of the slide groove 301 are smaller than the diameter of the middle part of the slide groove 301. A spring 203 is fitted around the outer circumference of the support rod 2 located in the middle part of the slide groove 301, and an annular abutment 204 is provided on the support rod 2 along its circumference. The spring 203 is disposed between the outer port of the slide groove 301 and the annular abutment 204. The reaction force of the spring 203 is transmitted to the support rod 2 through the annular abutment 204, so that the tail end of the support rod 2 abuts against the corresponding groove 403. In addition, the tail end of the support rod 2 is arc-shaped so that the tail end of the support rod 2 can slide along the inclined groove surface of the groove 403.

[0029] Each of the front ends of the support rod 2 is equipped with a guide wheel 201 via a rotating shaft 202. The guide wheel 201 can rotate 360 ​​degrees via the rotating shaft 202. The guide wheel 201 can abut against the furnace wall 1 of the incinerator and can move along the furnace wall 1 under the drive of the reciprocating power component. The top surface of the linkage knob 4 has a protruding linkage groove 302, and the top surface of the linkage knob 4 is provided with a cross-shaped rotating handle 404 for easy rotation by personnel.

[0030] When the linkage knob 4 is rotated, the tail ends of the three support rods 2 slide along the inclined groove surface of the corresponding groove 403. The length of the front end of the three support rods 2 extending out of the corresponding slide groove 301 can gradually lengthen as the inclined groove surface of the groove 403 rises. Correspondingly, the length of the front end of the three support rods 2 extending out of the corresponding slide groove 301 can gradually shorten as the inclined surface of the groove 403 decreases, until the guide wheel 201 can abut against the furnace wall 1 of the incinerator. After the linkage knob 4 is stopped from being rotated, the linkage knob 4 is fixed in the linkage groove 302 to prevent the length of the support rods 2 from changing.

[0031] The linkage knob 4 has an upper threaded hole 401 evenly spaced along its thickness direction. Correspondingly, the bottom surface of the linkage groove 302 has multiple lower threaded holes around the mounting groove. When the linkage knob 4 stops rotating, the fixing bolt is inserted into the aligned upper threaded hole 401 and the corresponding lower threaded hole to fix the linkage knob 4.

[0032] Furthermore, the reciprocating power assembly includes a mechanism on the outside of the tube seat for driving the infusion tube to reciprocate. The reciprocating power assembly is a screw-nut reciprocating mechanism, comprising a drive motor, a screw, and a nut. A plate is provided on the outside of the tube seat for mounting the reciprocating power assembly. The screw is arranged along the length of the plate, and a bearing seat is provided on the plate to support the rotation of the screw. The drive motor is connected to the screw via a coupling, and the nut is fitted onto the screw. The infusion tube is fixed to the nut. The drive motor drives the screw to rotate, and the nut can drive the infusion tube to reciprocate along the screw. Through a variable diameter guide mechanism, the nozzle is pushed to spray the coating onto the incinerator wall 1.

[0033] The specific implementation method of this device is as follows: First, install the nozzle and the infusion pipe on the central guide disc 3 respectively. Then, adjust the extension length of the support rod 2 according to the diameter of the incinerator wall 1. At this time, first pull out the fixing bolt, and then turn the linkage knob 4 until the guide wheels 201 abut against the incinerator wall 1. Then, start the drive motor. The reciprocating nut pushes the central guide disc 3 along the incinerator wall 1 through the infusion pipe. The nozzle moves accordingly and sprays the anti-coking chemical coating onto the incinerator wall 1.

Claims

1. An anti-coking spraying device for the combustion chamber of a waste incinerator, comprising a pipe seat, a nozzle installed at the pipe opening of the pipe seat, a delivery pipe for conveying anti-coking coating material connected to the end of the nozzle, and a reciprocating power assembly for driving the delivery pipe to move back and forth on the outside of the pipe seat, characterized in that: The nozzle and the infusion tube are connected by a variable diameter guide mechanism, which includes a central guide disc (3), a linkage knob (4), and multiple support rods (2). A linkage groove (302) is provided in the middle of the side of the central guide disc (3) facing the infusion tube. The linkage knob (4) is rotatably set in the linkage groove (302). Multiple circumferentially distributed grooves (403) are provided on the outer peripheral wall of the linkage knob (4). Multiple sliding grooves (301) are provided on the central guide disc (3), and the multiple sliding grooves (301) are arranged around the linkage groove (302). The support rods (2) are slidably inserted into the corresponding sliding grooves (301), and the tail end of the support rod (2) slides against the corresponding groove (403). Each support rod (2) in the sliding groove (301) is fitted with a spring (203) for the tail end of the support rod (2) to abut against the groove (403). The front end of the support rod (2) is installed with a spring (203). There is a guide wheel (201) that abuts against the furnace wall (1) of the incinerator; the rotating linkage knob (4) can push multiple support rods (2) to extend or shorten synchronously. After the linkage knob (4) is rotated to the point where the guide wheel (201) abuts against the furnace wall (1) of the incinerator, it is fixed in the linkage groove (302); the top surface of the linkage knob (4) is provided with an upper threaded hole (401) along its thickness direction, and the bottom of the linkage groove (302) is provided with multiple lower threaded holes. The upper threaded hole (401) and the lower threaded hole are fitted with fixing bolts for fixing the linkage knob (4); the number of the sliding groove (301), the wire groove (403) and the support rod (2) are all three. The three sliding grooves (301) are evenly spaced around the linkage groove (302); the cross-sectional shape of the wire groove (403) is V-shaped, and the shape of the tail end of the support rod (2) is an arc shape that can slide and cooperate with the wire groove (403).

2. The coking-preventing spraying device for the combustion chamber of a waste incinerator according to claim 1, characterized in that: The diameter of the middle part of the slide (301) is greater than the diameter of the outer port of the slide (301) and the inner port of the slide (301). An annular abutment (204) is provided on the support rod (2), and the spring (203) is sleeved on the support rod (2) between the annular abutment (204) and the outer port of the slide (301).

3. The coking-preventing spraying device of the combustion chamber of the waste incinerator according to claim 1, characterized in that: A connecting shaft (402) is provided in the middle of the bottom surface of the linkage knob (4), and a bearing is provided at the center of the bottom of the linkage groove (302) for the connecting shaft (402) to pass through and rotate.

4. The coking-preventing spraying device of the combustion chamber of the waste incinerator according to claim 1, characterized in that: The linkage knob (4) has a protruding linkage groove (302) on its top surface, and a cross-shaped rotating handle (404) is provided on the top surface of the linkage knob (4).

5. The coking prevention spraying device of the combustion chamber of the waste incinerator according to claim 1, characterized in that: The guide wheels (201) are respectively installed on the front end of the support rod (2) via the rotating shaft (202).

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