New circulating fluidized bed slag-poking steel rod

Abstract

The present invention provides a novel circulating fluidized bed slag-peeling drill, which solves the problem of poor slag-peeling effect of conventional slag-peeling tools. The drill comprises a drill body with a rib structure welded to the front end of the drill body. The rib structure includes a plurality of ribs welded to the top end of the drill body. The ribs are symmetrically arranged relative to the central axis of the drill body and inclined relative to the axial direction of the drill body. Adjacent ribs are connected by reinforcing ribs, which are welded to the middle of the ribs in a circular shape. A handle assembly is mounted on the rear end of the drill body via a locking mechanism, and a bent rod is mounted in the middle of the drill body via a plug-in mechanism. The present invention has the advantages of good slag-peeling effect and wide applicability.

Description

Technical Field

[0001] The invention belongs to the technical field of slag cleaning devices, and in particular relates to a novel circulating fluidized bed slag-peeling steel chisel. Background Art

[0002] With the advancement of science and technology, circulating fluidized bed boiler technology has rapidly developed over the past decade as a highly efficient, low-pollution, clean combustion technology. Boiler slag contains numerous impurities, and the high temperatures of circulating fluidized bed boilers can cause coking. Therefore, frequent unclogging of the boiler's slag pipe is essential. Conventional boilers can cause slagging during combustion due to various factors, including low ash melting points or the presence of sand in the coal, which can cause the temperature of the material bed to approach or exceed the ash melting point. Slagging can also occur due to uneven material bed density, uneven air distribution, or excessive ventilation, which can lead to intense reactions in certain areas and elevated fire layer temperatures, causing slagging. Low saturation temperature control, prolonged hot standby time, and prolonged ash exposure to high-temperature areas can also lead to slagging. Boiler slagging can severely impact air flow, reducing efficiency, necessitating manual unclogging of the boiler's slag pipe. Unclogging the boiler's slag pipe is known as slag removal. However, currently used slag removal tools are limited in scope, resulting in poor results and inadequate response to specific specific conditions. In addition, there is a risk of slag spraying during the dredging process, and prolonged dredging greatly increases the risk of burns to workers, resulting in poor safety.

[0003] To address the shortcomings of existing technologies, researchers have conducted extensive research and proposed various solutions. For example, a Chinese patent document [201820162682.X] discloses a boiler slag pipe dredging device, which includes a slag-poking rod, a prying rod, and a support rod. The slag-poking rod has an arcuate end connected to the prying rod, and its other end is located within the slag pipe. The support rod has one end connected to the outer wall of the slag pipe and its other end is provided with a connecting portion and grounded. The free end of the prying rod is movably connected to the connecting portion.

[0004] The above solution solves the problem of low operational safety of the existing slag-poking device to a certain extent, but the solution still has many shortcomings, such as a single dredging position and low dredging efficiency. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems and provide a new circulating fluidized bed slag-peeling steel chisel with reasonable design and good dredging effect.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: This novel circulating fluidized bed slag-peeling steel drill comprises a drill body, a rib structure welded to the front end of the drill body, the rib structure comprising a plurality of ribs welded to the top end of the drill body, the ribs being symmetrically arranged relative to the central axis of the drill body and inclined relative to the axial direction of the drill body, adjacent ribs being connected by reinforcing ribs welded to the middle of the ribs in a circular shape, a grip assembly being mounted at the rear end of the drill body via a locking mechanism, and a bent rod being mounted at the middle of the drill body via a plug-in mechanism. By mounting the rib structure at the front end of the drill body, the disadvantage of conventional steel drills having a single dredging position is overcome, and the dredging area is increased.

[0007] In the aforementioned novel circulating fluidized bed slag-peeling drill, the locking mechanism comprises a spiral groove on the side of the drill shaft's rear end, and a spiral strip located within the central hole of the handle assembly, facing the groove. Rotating the drill shaft and handle assembly relative to each other stabilizes the connection, making it easy to replace different handles or drill shafts.

[0008] In the aforementioned new circulating fluidized bed slag-penetrating drill, the handle assembly includes a handle barrel threadedly connected to the rear end of the drill body, with a heat insulator mounted on the outside of the handle barrel. Direct contact between the drill body and the handle barrel serves as a connection, while the heat insulator protects the operator's hands from burns caused by excessive heat.

[0009] In the aforementioned novel circulating fluidized bed slag-penetrating steel drill, the heat insulating member comprises a heat insulating tube made of a porous material, which surrounds the handle tube. The heat insulating tube made of the porous material increases the contact area with the air, thereby reducing the heat transferred from the drill body to the hand.

[0010] In the aforementioned novel circulating fluidized bed slag-penetrating steel drill, the thermal insulation comprises a heat-insulating net mounted on the outside of the handle, with the inside of the heat-insulating net connected to the handle via a support sheet. A hollow space exists between the heat-insulating net and the handle, facilitating airflow to remove heat.

[0011] In the aforementioned novel circulating fluidized bed slag-penetrating drill, the connecting mechanism includes a spigot located in the middle of the drill body. The center of the spigot is a socket for receiving a bent rod. Opposite pin holes are provided on the sides of the spigot and the bent rod, each of which houses a fixing pin. The spigot connects the drill body to the bent rod, facilitating replacement of the bent rod to accommodate varying usage requirements.

[0012] In the aforementioned novel circulating fluidized bed slag-peeling steel drill, the bending rod comprises a plurality of metal rods with different bending coefficients. The metal rods with different bending coefficients can be bent to different radians to adapt to slag discharge pipes of different diameters, thereby improving the applicability of the drill.

[0013] In the aforementioned novel circulating fluidized bed slag-peeling steel chisel, the outer side of the top of the umbrella rib is plated with a wear-resistant layer. The wear-resistant layer on the umbrella rib ensures that the umbrella rib will not wear out after long-term use, thereby increasing its service life.

[0014] In the aforementioned novel circulating fluidized bed slag-peeling steel drill, a baffle is welded between the handle assembly and the bent rod. During slag spraying, the baffle can block a portion of the coal slag, reducing the risk of burns to the operator.

[0015] In the aforementioned new circulating fluidized bed slag-penetrating steel drill, a spherical reinforcement point is welded at the junction of the rib and the drill body. This welding at the junction of the drill body and the rib increases the local strength, allowing the steel drill to withstand greater bending stress.

[0016] Compared with the existing technology, the advantages of the present invention are: by changing the front end structure of the steel chisel, the disadvantage of the single dredging position of the conventional steel chisel is solved, and the dredging area is increased; compared with the conventional steel chisel, the dredging efficiency of the slag discharge pipe is higher, avoiding the risk of personal injury caused by long-term dredging; the bending rods with different bending coefficients can be replaced to adapt to slag discharge pipes of different calibers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the locking mechanism of the present invention;

[0020] Figure 4 is a structural schematic diagram of another locking mechanism of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the plug-in mechanism of the present invention;

[0022] Figure 6 is a schematic structural diagram of the handle assembly of the present invention;

[0023] In the figure, there are the drill body 1, the rib structure 2, the rib 21, the reinforcing rib 22, the wear-resistant layer 23, the reinforcing point 24, the locking mechanism 3, the spiral groove 31, the center hole 32, the spiral strip 33, the handle assembly 4, the handle tube 41, the thermal insulation part 42, the thermal insulation tube 43, the thermal insulation net 44, the support sheet 45, the plug-in mechanism 5, the plug connector 51, the plug-in hole 52, the pin hole 53, the fixing pin 54, the bent rod 6, the baffle 7, and the anti-slip protrusion 8. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1-6As shown, the novel circulating fluidized bed slag-peeling drill comprises a drill body 1, with a rib structure 2 welded to the front end of the drill body 1. The rib structure 2 includes a plurality of ribs 21 welded to the top end of the drill body 1. The ribs 21 are symmetrically arranged relative to the central axis of the drill body 1 and are inclined relative to the axial direction of the drill body 1. Adjacent ribs 21 are connected by reinforcing ribs 22, which are welded to the middle of the ribs 21 in a circular shape. The rear end of the drill body 1 is mounted with a handle assembly 4 via a locking mechanism 3, and the middle portion of the drill body 1 is mounted with a bending rod 6 via a plug-in mechanism 5. During slag prying, the drill body 1 is inserted into the slag discharge pipe, and the bending rod 6 is bent to a certain angle. The top ends of the ribs 21 contact the inner wall of the slag discharge pipe, and at most two ribs 21 scrape against the inner wall of the slag discharge pipe, thereby extending the drill body to pry out the slag adhering to the inner wall of the slag discharge pipe.

[0026] Specifically, the locking mechanism 3 includes a spiral groove 31 distributed on the side of the rear end of the drill body 1, and a spiral strip 33 distributed inside the central hole 32 of the grip assembly 4, which is opposite to the spiral groove 31. When installing or replacing the grip assembly 4 or the drill body 1, the spiral groove 31 and the spiral strip 33 are rotated relative to each other to complete the connection of the components.

[0027] In depth, the grip assembly 4 includes a grip tube 41 threadedly connected to the tail end of the drill body 1, and a heat insulation member 42 is installed on the outside of the grip tube 41. The grip tube 41 is fixedly connected to the drill body 1, and the heat insulation member 42 installed on the outside reduces the accumulation of heat at the grip assembly 4.

[0028] It can be seen that the heat insulating member 42 includes a heat insulating tube 43 made of a porous material, and the heat insulating tube 43 wraps the grip tube 41. The heat insulating tube 43 is attached to and installed on the outside of the grip tube 41, and air can flow freely in the hole to quickly dissipate heat.

[0029] Obviously, the heat insulating member 42 includes a heat insulating net 44 mounted on the outside of the grip tube 41, and the inner side of the heat insulating net 44 is connected to the grip tube 41 via a support sheet 45. The heat insulating net 44 surrounds the outside of the grip tube 41, and a gap is left between the grip tube 41.

[0030] In addition, the plug-in mechanism 5 includes a plug connector 51 provided in the middle of the drill body 1. The center of the plug connector 51 is a plug hole 52 for plugging into the bent rod 6. Opposite pin holes 53 are formed on the sides of the plug connector 51 and the bent rod 6. A fixing pin 54 is inserted into the pin hole 53. When installing or removing the bent rod 6, the fixing pin 54 can be pulled out to replace it.

[0031] Furthermore, the bending rod 6 comprises a plurality of metal rods with different bending coefficients. The bending rod 6 allows the drill body 1 to be bent to a certain curvature, so that when the slag is removed, the hand does not need to be placed directly below the slag discharge tube.

[0032] Furthermore, the outer side of the top of the umbrella rib 21 is plated with a wear-resistant layer 23. When used for a long time, the wear-resistant layer 23 directly adheres to the inner wall of the slag discharge tube.

[0033] At the same time, a baffle 7 is welded between the handle assembly 4 and the curved rod 6. When poking the slag, the cinder falls on the baffle 7, reducing the contact between the hand and the cinder.

[0034] Preferably, a spherical reinforcement point 24 is welded at the junction of the rib 21 and the drill body 1. When the slag is poked, the drill body 1 bends and the junction of the rib 21 and the drill body 1 is subjected to a large bending stress, so the reinforcement point 24 is welded.

[0035] Obviously, a plurality of anti-skid protrusions 8 are distributed circumferentially on the outermost side of the grip assembly 4. When the user holds the grip assembly 4, the anti-skid protrusions 8 press against the hand, thereby increasing the local friction and preventing the hand from slipping.

[0036] Specifically, the end of the handle assembly 4 close to the drill body 1 has a larger diameter than the rear end of the handle assembly 4. When poking slag, the hand applies a thrust to the handle assembly 4, and the thick front and thin back structure is conducive to force transmission.

[0037] Furthermore, the drill body 1 and / or the rib 21 are hollow inside. The hollow tube structure is beneficial to reducing the overall weight of the steel drill and reducing heat transfer.

[0038] To sum up, the principle of this embodiment is to add an umbrella rib structure 2 at the front end of the drill body 1, so that the contact points between the steel drill and the coke block are greatly increased, and at most two umbrella ribs 21 are in contact with the inner wall of the slag discharge pipe, and the remaining umbrella ribs 21 are located in the middle of the slag discharge pipe, which can better contact with the coke block during dredging, break up the coke block more quickly, and restore normal slag discharge.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0040] Although this document frequently uses terms such as the drill body 1, rib structure 2, rib 21, reinforcing rib 22, wear-resistant layer 23, reinforcing point 24, locking mechanism 3, spiral groove 31, center hole 32, spiral strip 33, handle assembly 4, handle tube 41, thermal insulation 42, thermal insulation tube 43, thermal insulation net 44, support sheet 45, plug-in mechanism 5, plug connector 51, plug hole 52, pin hole 53, fixing pin 54, curved rod 6, baffle 7, and anti-slip projection 8, the use of other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A novel circulating fluidized bed slag-penetrating steel drill, comprising a drill body (1), characterized in that: The front end of the drill body (1) is welded with an umbrella rib structure (2), and the umbrella rib structure (2) includes a plurality of umbrella ribs (21) welded to the top end of the drill body (1), and the umbrella ribs (21) are symmetrically arranged relative to the central axis of the drill body (1) and are inclined relative to the axial direction of the drill body (1). Adjacent umbrella ribs (21) are connected with reinforcing ribs (22), and the reinforcing ribs (22) are welded in the middle of the umbrella ribs (21) in a circular ring shape. The rear end of the drill body (1) is installed with a handle assembly (4) through a locking mechanism (3), and the middle part of the drill body (1) is installed with a bending rod (6) through a plug-in mechanism (5); the locking mechanism (3) includes spiral grooves (31) distributed on the side of the rear end of the drill body (1), and the handle assembly ( 4) has spiral strips (33) arranged on the inner side of the central hole (32) opposite to the spiral groove (31); the plug-in mechanism (5) includes a plug connector (51) arranged in the middle of the drill body (1), the center of the plug connector (51) is a plug hole (52) for plugging the bending rod (6), the plug connector (51) and the bending rod (6) are provided with opposite pin holes (53) on the side, and a fixing pin (54) is inserted into the pin hole (53); the outer side of the top of the umbrella rib (21) is plated with a wear-resistant layer (23); the joint between the umbrella rib (21) and the drill body (1) is welded with a spherical reinforcement point (24); the front end of the drill body (1) is increased with an umbrella rib structure (2), which can make the tops of multiple umbrella ribs (21) contact with the coke block when dredging.

2. The novel circulating fluidized bed slag-peeling steel drill according to claim 1 is characterized in that: The grip assembly (4) comprises a grip tube (41) threadedly connected to the rear end of the drill body (1), and a heat insulating member (42) is installed on the outside of the grip tube (41).

3. The novel circulating fluidized bed slag-peeling steel drill according to claim 2 is characterized in that: The heat insulating member (42) comprises a heat insulating tube (43) made of a porous material, and the heat insulating tube (43) wraps the handle tube (41).

4. The novel circulating fluidized bed slag-peeling steel drill according to claim 2 is characterized in that: The heat insulating member (42) comprises a heat insulating net (44) mounted on the outside of the grip tube (41), and the inner side of the heat insulating net (44) is connected to the grip tube (41) via a support sheet (45).

5. The novel circulating fluidized bed slag-penetrating steel drill according to claim 1 is characterized in that: The bending rod (6) comprises a plurality of metal rods with different bending coefficients.

6. The novel circulating fluidized bed slag-peeling steel drill according to claim 1 is characterized in that: A baffle (7) is welded between the handle assembly (4) and the curved rod (6).

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