Automatic ash discharge and combustion support device

Abstract

The present invention discloses an automatic ash discharge and combustion-supporting device, comprising a furnace bed (1) and an ash hopper (11) arranged at the lower end of the furnace bed, an air distribution sleeve connected to an exhaust pipe (2) is arranged in the ash hopper (11), an automatic ash discharge device is arranged at the discharge position of the ash hopper (11), the automatic ash discharge device comprises an upper box body (41), a lower box body (42) and an ash storage cylinder (31) connected to a servo motor, an ultrasonic positioning probe (43) is arranged in the upper box body (41), and the ultrasonic positioning probe (43) and the servo motor (5) are both connected to a PLC controller. The present invention arranges an air distribution sleeve to form a spiral rising cyclone, enhances the air intake pressure, and can quickly enter the combustion chamber from the gap of the furnace bed, increases the air intake amount, and arranges an automatic ash discharge device at the lower end of the ash hopper, which can not only prevent the air intake from flowing out, but also ensure that the ash is discharged in time under the premise of sufficient combustion, and has a simple and compact structure and is convenient to use.

Description

Technical Field

[0001] The invention relates to the field of garbage incinerator manufacturing, and in particular to an automatic ash discharging and combustion-supporting device. Background Art

[0002] In the current incinerator, an air intake pipe is provided in the ash hopper. The air discharged from the air intake pipe enters the combustion chamber through the gap of the furnace bed to assist combustion. The lower end of the ash hopper is also directly connected to the ash discharge main pipe, causing the air entering the ash hopper to flow toward the furnace bed and the ash discharge main pipe at the same time. The ash on the furnace bed accumulates in the gap, reducing the air flow upward to the boiler combustion furnace bed, causing the air supply to be lost, resulting in insufficient oxygen and incomplete combustion, which in turn causes the garbage to not be completely burned, which is not conducive to environmental protection. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an automatic ash discharging and combustion-supporting device which is beneficial to ensuring the combustion gas supply and can effectively discharge the furnace ash.

[0004] The technical solution of the present invention is as follows:

[0005] An automatic ash discharge and combustion-supporting device comprises a furnace bed and an ash hopper arranged at the lower end of the furnace bed, wherein an air distribution sleeve connected to an exhaust pipe is arranged in the ash hopper, each of the air distribution sleeves comprises a support frame and a sleeve core, a shell is connected to the support frame, at least two fan blades are connected and arranged around the sleeve core and the support frame in a circumferential direction, two adjacent fan blades and corresponding positions of the inner wall of the shell are combined to form a cavity structure, a connection hole is provided at the position corresponding to each cavity on the inner wall of the shell, and a curved jet pipe is connected at the position corresponding to the connection hole on the outer wall of the shell; at the discharge position of the ash hopper, a connection hole is provided at the inner wall of the shell, and a curved jet pipe is provided at the position corresponding to the connection hole; at the discharge position of the ash hopper, a connection hole is provided at the inner wall of the shell, and a curved jet pipe is provided at the outer wall of the shell. An automatic ash discharge device is provided, which includes a support seat, an ash storage barrel is provided on the support seat, a feed port is provided on one side of the ash storage barrel, and a discharge port is provided on the other side, the angle between the axial center line of the feed port and the axial center line of the discharge port is 135°, an upper box body connected with the feed port is provided at the upper end of the support seat, and a lower box body connected with the discharge port is provided at the lower end, the upper box body is connected and fixed to the discharge end of the ash hopper, an ultrasonic positioning probe is provided in the upper box body, one end of the ash storage barrel is connected to the output end of the servo motor, and the ultrasonic positioning probe and the servo motor are both connected to the PLC controller.

[0006] With the above structure, at least two cavity structures are formed by the fan blades and the corresponding positions of the inner wall of the shell in the air distribution sleeve, forming multiple air circulation branches, each of which is connected to the curved jet pipe at the corresponding position through the connecting hole. Under the guidance of the curved pipe of the curved jet pipe, a spiral air flow is formed in the ash hopper and circulates upward. Since the wind path is divided into multiple parts, multiple spiral airflows converge upward to form a strong penetrating wind pressure, which enhances the penetration of the air supply and is more conducive to the incoming air to blow away the accumulated furnace ash and transport it to the combustion chamber above the furnace bed, ensuring the air intake and sufficient combustion of the garbage; at the same time, part of the cyclone formed is reflected on the inner wall of the ash hopper to form a wind force blowing vertically downward, which is more conducive to pushing the residual ash on the inner wall of the ash hopper to the ash accumulation cylinder at the lower end of the ash hopper, so as to facilitate the collection and discharge of the furnace ash; at the same time, an ultrasonic wave is arranged at the lower end of the ash hopper. Wave positioning probe, set detection parameters on the PLC controller, use the height value of the detected ash accumulation to send a signal to the PLC, and the PLC controller starts the servo motor to drive the ash barrel to rotate. Before rotation, the feed port is connected with the upper box body, and the discharge port is separated from the lower box body. At this time, the ash barrel, the upper box body and the ash hopper are connected, but not connected with the lower box body. After rotation, the feed port is separated from the upper box body, and the discharge port is connected with the lower box body. At this time, the upper box body is connected with the ash hopper, but still not connected with the lower box body. After the ash barrel has discharged the ash, the servo motor rotates, and the feed port is connected with the upper box body, and the discharge port is separated from the lower box body. Except for the gap generated when the feed port and the discharge port are flipped, the rotation speed of the servo motor can be set to control the time period of the gap, which can ensure that there will not be too much air discharged at the position of the ash hopper, thereby ensuring the stability of the air supply.

[0007] In order to facilitate the guidance of the intake air and ensure the air flow velocity of the air supply, preferably, six fan blades are arranged around the outer wall of the sleeve core in the circumferential direction, each of the fan blades is an arc-shaped structure, and a curved jet pipe is connected along the external tangent direction of the fan blade at the position corresponding to the connecting hole on the outer wall of the outer shell.

[0008] In order to better guide the intake air flow and avoid airflow obstruction at the air inlet, preferably, a conical block with a larger upper portion and a smaller lower portion is provided at the bottom of the sleeve core, and the diameter of the large diameter end of the conical block is the same as the diameter of the sleeve core.

[0009] In order to reduce weight and facilitate disassembly and assembly, preferably, the sleeve core is a hollow structure.

[0010] In order to facilitate installation and ensure sealing, preferably, the curved air jet pipe is screwed on the outer side wall of the shell, a step hole is provided on the curved air jet pipe, and a sealing ring is provided at the connection between the shell and the curved air jet pipe. The bolt is inserted from the step hole and passes through the corresponding positions of the shell, the sealing ring and the curved air jet pipe from the outside to the inside in sequence. The nut end face of the bolt is abutted and tightened against the step surface of the step hole to fix the shell and the curved air jet pipe.

[0011] In order to avoid damage due to impact and ensure detection accuracy, it is preferred that a mounting sleeve extending horizontally into the box is provided on one side of the upper box body, a bending section extending vertically downward is provided at the extending end of the mounting sleeve, an ultrasonic positioning probe is provided in the mounting sleeve, an opening is provided at the lower end of the bending section, and the detection position of the ultrasonic positioning probe is located at the opening.

[0012] In order to ensure smooth rotation of the ash barrel and facilitate timely discharge of ash, it is preferred that an arc-shaped groove is provided on the outer wall of the ash barrel, and an arc-shaped graphite lubricating plate is provided in the groove, the curvature of the outer wall of the graphite lubricating plate is the same as the curvature of the outer wall of the ash barrel, and the outer wall of the graphite lubricating plate is flush with the outer wall of the ash barrel; fixed grooves are provided at positions corresponding to the graphite lubricating plates on the support frame, a pressure block with a steel ball is provided in the fixed groove, and a compression spring is provided between the pressure block and the bottom of the fixed groove, the steel ball rolls and abuts against the outer wall of the graphite lubricating plate, and makes the pressure block abut against the compression spring in the fixed groove.

[0013] In order to simplify the structure and facilitate installation, preferably, a transmission rod is fixedly connected to the output end of the servo motor, one end of the transmission rod is hinged to one end of the connecting rod, the other end of the connecting rod is hinged to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to one side of the ash storage barrel.

[0014] In order to better lubricate the feed and discharge ports of the ash storage barrel and ensure smooth turning, preferably, lubrication blocks are provided at the discharge position of the upper box body and the feed position of the lower box body. When the ash storage barrel rotates, the corresponding end faces of the lubrication blocks on the two boxes are in contact with the corresponding positions of the outer wall of the ash storage barrel.

[0015] Beneficial effect: The present invention arranges an air distribution sleeve to form a spiral rising cyclone, which enhances the air intake pressure and can quickly enter the combustion chamber from the gap of the furnace bed. While increasing the air intake volume, an automatic ash discharge device is arranged at the lower end of the ash hopper, which can not only prevent the outflow of air intake, but also ensure the timely discharge of ash under the premise of sufficient combustion. The structure is simple and compact, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of the air distribution sleeve.

[0018] Figure 3 It is a schematic diagram of the installation structure of the shell and the core sleeve.

[0019] Figure 4 Exploded view of the air distribution sleeve.

[0020] Figure 5 It is a schematic diagram of the installation structure of the support frame and the shell.

[0021] Figure 6 for Figure 1 Enlarged view of point A in .

[0022] Figure 7 Schematic diagram of the installation structure of the graphite lubrication plate and the pressing block.

[0023] Figure 8 This is a schematic diagram of the appearance and structure of the automatic ash discharge device. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Depend on Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the present invention includes a furnace bed 1 and an ash hopper 11 arranged at the lower end of the furnace bed, an air distribution sleeve connected to the exhaust pipe 2 is arranged in the ash hopper 11, each of the air distribution sleeves includes a support frame 21 and a sleeve core 22 of a hollow structure, a conical block 221 with a larger upper part and a smaller lower part is arranged at the bottom of the sleeve core 22, and the diameter of the large diameter end of the conical block 221 is the same as the diameter of the sleeve core 22; an outer shell 27 is connected to the support frame 21, and six fan blades 23 are connected and arranged along the circumferential direction between the sleeve core 22 and the support frame 21, each of the fan blades 23 is an arc-shaped structure, and two adjacent fan blades 23 and the corresponding positions of the inner wall of the outer shell 27 are combined to form a cavity structure, and a connecting hole 24 is provided on the inner side wall of the outer shell 27 at the position corresponding to each cavity, and a curved jet pipe 25 is provided on the outer side wall of the outer shell 27 at the position corresponding to the connecting hole 24 along the external tangent direction of the fan blade 23.

[0026] The curved jet pipe 25 is screwed on the outer side wall of the outer shell 27, a step hole is provided on the curved jet pipe 25, a sealing ring 26 is provided at the connection between the outer shell 27 and the curved jet pipe 25, a bolt is inserted from the step hole, and passes through the corresponding positions of the outer shell 2127, the sealing ring 26 and the curved jet pipe 25 from the outside to the inside, the nut end face of the bolt abuts against the step surface of the step hole to fix the outer shell 27 and the curved jet pipe 25.

[0027] An automatic ash discharge device is provided at the discharge position of the ash hopper 11, and the automatic ash discharge device includes a support seat 3, an ash storage cylinder 31 is provided on the support seat 3, an arc-shaped groove is provided on the outer wall of the ash storage cylinder 31, and an arc-shaped graphite lubricating plate 32 is provided in the groove, the curvature of the outer wall of the graphite lubricating plate 32 is the same as the curvature of the outer wall of the ash storage cylinder 31, and the outer wall of the graphite lubricating plate 32 is flush with the outer wall of the ash storage cylinder 31; a support seat 3 is provided at the position corresponding to the graphite lubricating plate 32 There is a fixed groove, in which a pressure block 33 with a steel ball 35 is arranged, and a compression spring 34 is arranged between the pressure block 33 and the bottom of the fixed groove. The steel ball 35 rolls and abuts against the outer wall of the graphite lubricating plate 32, and makes the pressure block 33 abut against the compression spring 34 in the fixed groove; lubrication blocks 44 are arranged at the discharge position of the upper box body 41 and the feed position of the lower box body 42. When the ash storage barrel 31 rotates, the corresponding end faces of the lubrication blocks 44 on the two boxes are in contact with the corresponding positions of the outer wall of the ash storage barrel 31.

[0028] A feed port 311 is provided on one side of the ash storage cylinder 31, and a discharge port 312 is provided on the other side, and the angle between the axial center line of the feed port 311 and the axial center line of the discharge port 312 is 135°; an upper box body 41 connected to the feed port 311 is provided at the upper end of the support seat 3, and a lower box body 42 connected to the discharge port 312 is provided at the lower end, the upper box body 41 is connected and fixed to the discharge end of the ash hopper 11, and a mounting sleeve 411 extending horizontally into the box is provided on one side of the upper box body 41, a vertically downward bending section is provided at the extending end of the mounting sleeve 411, an ultrasonic positioning probe 43 is provided in the mounting sleeve 411, and an opening is provided at the lower end of the bending section, and the detection position of the ultrasonic positioning probe 43 is located at the opening position.

[0029] A transmission rod 51 is fixedly connected to the output end of the servo motor 5, one end of the transmission rod 51 is hinged to one end of a connecting rod 52, the other end of the connecting rod 52 is hinged to one end of a connecting rod 36, the other end of the connecting rod 36 is fixedly connected to one side of the ash storage barrel 31, and the ultrasonic positioning probe 43 and the servo motor 5 are both connected to a PLC controller (not shown).

[0030] The method of use of the present invention is as follows:

[0031] like Figures 1 to 7As shown, the moving row and the fixed row in the furnace are arranged obliquely to facilitate ash discharge, wherein the fixed row and the moving row are arranged at intervals, the fixed row is fixed, and the moving row is moved back and forth in an oblique direction by a transmission device, so that the raw materials are fully burned and the burned ash is turned over and piled out of the furnace in sequence; in this process, six cavity structures are formed in each air distribution sleeve by the corresponding positions of the fan blades 23 and the inner wall of the shell 27, forming six air circulation branches, each of which is connected to the curved injection pipe 25 at the corresponding position through the connecting hole 24, and under the guidance of the curved pipeline of the curved injection pipe 25 , a spiral air flow is formed in the ash hopper 11 and circulates upward. Since the wind path is divided into multiple parts, multiple spiral air flows converge upward to form a strong penetrating wind pressure, which enhances the penetrating power of the air supply and is more conducive to the incoming air to blow away the ash accumulated in the gap between two adjacent moving row blocks, thereby quickly transporting it to the combustion chamber above the furnace bed 1, ensuring the incoming air volume and sufficient combustion of the garbage; at the same time, part of the cyclone formed is reflected on the inner wall of the ash hopper 11 to form a wind force blowing vertically downward, which is more conducive to pushing the remaining ash on the inner wall of the ash hopper 11 to the ash storage cylinder 31 at the lower end of the ash hopper 11, so as to facilitate the collection and discharge of the ash.

[0032] At the same time, an ultrasonic positioning probe 43 is arranged at the lower end of the ash hopper 11, and detection parameters are set on the PLC controller. The height value of the ash accumulation in the upper box body 41 is detected to send a signal to the PLC, and the PLC controller timely starts the servo motor 5 to drive the ash accumulation barrel 31 to rotate. Before the rotation, the feed port 311 is connected with the upper box body 41, and the discharge port 312 faces the lower left side of the inner wall of the lower box body 42 and is separated from the lower box body 42. At this time, the ash accumulation barrel 31, the upper box body 41 are connected with the ash hopper 11, and are not connected with the lower box body 42. After the transmission rod 51 drives the connecting rod 36 to rotate counterclockwise ( Figure 6 The feed port 311 is toward the upper left side of the inner wall of the upper box body 41 and is separated from the upper box body 41, and the discharge port 312 is connected to the lower box body 42. At this time, the upper box body 41 is connected to the ash hopper 11, but not to the lower box body 42. After the ash storage cylinder 31 has discharged all the ash, the servo motor 5 rotates, the feed port 311 is connected to the upper box body 41, and the discharge port 312 is separated from the lower box body 42. There will be a period of connection between the feed port 311 and the discharge port 312 when they are turned over. This period of time can be controlled by setting the rotation speed of the servo motor 5 to ensure that too much air is not discharged from the ash hopper 11, thereby ensuring the stability of the air supply.

[0033] During use, if Figure 6As shown, eight grooves are symmetrically arranged on the outer wall of the ash storage cylinder, and a graphite lubricating plate 32 is arranged in each groove to ensure the consistency of the rotational lubrication state and prevent the ash storage cylinder 31 from forming a cam rotation state, so as to avoid the insufficient communication area between the discharge port 312 and the lower box body 42, thereby blocking the ash discharge and affecting the ash discharge efficiency; grooves are arranged at the discharge end of the upper box body 41 and the feed end of the lower box body 42, and lubricating blocks 44 are embedded in the grooves. Figure 5 It can be seen that the lubricating block 44 is in close contact with the outer wall of the ash storage cylinder 31, and the air in the ash hopper 11 can only flow out through the ash storage cylinder 31. Therefore, when the discharge port 312 is not transferred to the feeding end of the lower box body 42, the ash storage cylinder is always in a partition state with the lower box body 42, and no air will flow out. Figure 5 As shown, the steel ball 35 and the outer wall of the ash storage tube 31 are both arc surfaces, and three pressure blocks 33 are respectively provided at the position corresponding to each graphite lubricating plate 32 along the circumferential direction on the support seat 3. As the graphite lubricating plate 32 wears, the pressure block 33 always squeezes the steel ball 35 and the outer wall of the ash storage tube 31 to roll and abut under the elastic force of the compression spring 34. The symmetrical force on the left and right reduces the rotation resistance, ensuring the smooth rotation of the ash storage tube 31. In order to maintain a consistent lubrication state, the lubrication block 44 is also made of graphite material.

[0034] The positions of the feed port 311 and the discharge port 312 are at an angle of 135°. After the ash storage cylinder 31 is rotated into place, it can ensure that the ash hopper 11 is not connected to the outside world in the ash storage or ash discharge state, which effectively prevents the outflow of the intake air and ensures sufficient combustion air supply.

Claims

1. An automatic ash discharge and combustion-supporting device, comprising a hearth (1) and an ash hopper (11) arranged at the lower end of the hearth, characterized in that: An air distribution sleeve connected to the exhaust pipe (2) is provided in the ash hopper (11), each of the air distribution sleeves includes a support frame (21) and a sleeve core (22), a shell (27) is connected to the support frame (21), at least two fan blades (23) are connected and arranged in a circumferential direction between the sleeve core (22) and the support frame (21), and two adjacent fan blades (23) and the corresponding positions of the inner wall of the shell (27) are combined to form a cavity structure, a connection hole (24) is provided on the inner side wall of the shell (27) at the position corresponding to each cavity, and a curved jet pipe (25) is provided on the outer side wall of the shell (27) at the position corresponding to the connection hole (24); an automatic ash discharge device is provided at the discharge position of the ash hopper (11), and the automatic ash discharge device includes a support seat (3), an ash storage cylinder (31) is provided on the support seat (3), a feed port (311) is provided on one side of the ash storage cylinder (31), and a discharge port (312) is provided on the other side, the angle between the axial center line of the feed port (311) and the axial center line of the discharge port (312) is 135°, an upper box body (41) connected to the feed port (311) is provided at the upper end of the support seat (3), and a lower box body (42) connected to the discharge port (312) is provided at the lower end, the upper box body (41) is connected and fixed to the discharge end of the ash hopper (11), an ultrasonic positioning probe (43) is provided in the upper box body (41), one end of the ash storage cylinder (31) is connected to the output end of the servo motor (5), and the ultrasonic positioning probe (43) and the servo motor (5) are both connected to the PLC controller.

2. The automatic ash discharge and combustion-supporting device according to claim 1, characterized in that: Six fan blades (23) are arranged around the outer wall of the sleeve core (22) in a circumferential direction, each of the fan blades (23) is an arc-shaped structure, and a curved air injection pipe (25) is connected to the outer wall of the shell (27) at a position corresponding to the connecting hole (24) along the outer tangent direction of the fan blade (23).

3. The automatic ash discharge and combustion-supporting device according to claim 1, characterized in that: A tapered block (221) with a larger upper portion and a smaller lower portion is provided at the bottom of the sleeve core (22), wherein the diameter of the larger diameter end of the tapered block (221) is the same as the diameter of the sleeve core (22).

4. The automatic ash discharge and combustion-supporting device according to claim 1, characterized in that: The sleeve core (22) is a hollow structure.

5. The automatic ash discharge and combustion-supporting device according to claim 1, characterized in that: The curved surface jet pipe (25) is screwed onto the outer side wall of the shell (27). A stepped hole is provided on the curved surface jet pipe (25). A sealing ring (26) is provided at the connection between the shell (27) and the curved surface jet pipe (25). A bolt is inserted from the stepped hole and sequentially passes through the corresponding positions of the shell (27), the sealing ring (26) and the curved surface jet pipe (25) from the outside to the inside. The nut end face of the bolt abuts against the stepped surface of the stepped hole to fix the shell (27) and the curved surface jet pipe (25).

6. The automatic ash discharge and combustion-supporting device according to claim 1, characterized in that: A mounting sleeve (411) is provided on one side of the upper box body (41) and extends horizontally into the box. A vertically downward bending section is provided at the extending end of the mounting sleeve (411). An ultrasonic positioning probe (43) is provided in the mounting sleeve (411). An opening is provided at the lower end of the bending section. The detection position of the ultrasonic positioning probe (43) is located at the opening.

7. The automatic ash discharge and combustion-supporting device according to claim 1, characterized in that: An arc-shaped groove is provided on the outer wall of the ash storage cylinder (31), and an arc-shaped graphite lubricating plate (32) is provided in the groove. The curvature of the outer wall of the graphite lubricating plate (32) is the same as that of the outer wall of the ash storage cylinder (31), and the outer wall of the graphite lubricating plate (32) is flush with the outer wall of the ash storage cylinder (31); a fixing groove is provided on the support seat (3) at a position corresponding to the graphite lubricating plate (32), a pressure block (33) with a steel ball (35) is provided in the fixing groove, and a compression spring (34) is provided between the pressure block (33) and the bottom of the fixing groove, and the steel ball (35) rolls against the outer wall of the graphite lubricating plate (32), so that the pressure block (33) abuts against the compression spring (34) in the fixing groove.

8. The automatic ash discharge and combustion-supporting device according to claim 1, characterized in that: A transmission rod (51) is fixedly connected to the output end of the servo motor (5), one end of the transmission rod (51) is hinged to one end of a connecting rod (52), the other end of the connecting rod (52) is hinged to one end of a connecting rod (36), and the other end of the connecting rod (36) is fixedly connected to one side of the dust storage cylinder (31).

9. The automatic ash discharge and combustion-supporting device according to claim 1, characterized in that: Lubricating blocks (44) are provided at the discharge position of the upper box body (41) and the feed position of the lower box body (42). When the dust accumulation barrel (31) rotates, the corresponding end faces of the lubricating blocks (44) on the two boxes are in contact with the corresponding positions of the outer wall of the dust accumulation barrel (31).

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