Pneumatic ash conveying pipe assembly and pneumatic ash conveying system

Abstract

This invention relates to the field of pneumatic ash conveying pipeline components, and discloses a pneumatic ash conveying pipeline component and a pneumatic ash conveying system. The pneumatic ash conveying pipeline component includes a pipe body, a connecting ring, a filter disc, and a pressure ring. The pipe body extends along a first direction. The connecting ring is disposed on the inner wall of the pipe body and is arranged around the circumference of the pipe body. The connecting disc has multiple filter holes and is movably disposed within the pipe body along the first direction. The outer circumferential surface of the filter disc can abut against the inner circumferential surface of the connecting ring, and together with the connecting ring, form an ash discharge trough. The filter disc can also move away from the connecting ring along the first direction and is spaced apart from the connecting ring to form an ash discharge gap communicating with the ash discharge trough. The pressure ring is arranged around the circumference of the filter disc and is movably disposed within the pipe body along the first direction. The pressure ring and the ash discharge trough are arranged opposite each other in the first direction. This invention can reduce the risk of pipeline blockage.

Description

Technical Field

[0001] This invention relates to the field of pneumatic ash conveying pipeline components, and in particular to a pneumatic ash conveying pipeline component and a pneumatic ash conveying system. Background Technology

[0002] Currently, in coal-fired power generation technology, a large amount of dust is generated during fuel combustion. Existing pneumatic ash conveying technology can be used to carry dust and smoke through the pipe using gas, so that the dust and smoke are carried to designated equipment. Filter screens need to be installed in the internal channels of the ash conveying pipe to filter the dust. Due to the increase in filtration time, the filtered dust is easy to accumulate on one side of the filter screen, which may cause the pipe to become blocked. Summary of the Invention

[0003] To address the shortcomings of the prior art, the present invention aims to provide a pneumatic ash conveying pipeline assembly and a pneumatic ash conveying system, which are designed to reduce the risk of pipeline blockage.

[0004] To achieve the above objectives, the present invention provides a pneumatic ash conveying pipeline assembly, comprising: A tube body extending along a first direction; A docking ring is disposed on the inner wall of the tube body and is arranged around the circumference of the tube body; A filter disc, wherein the docking disc has multiple filter holes and is movably disposed within the tube along the first direction; the outer circumferential surface of the filter disc can abut against the inner circumferential surface of the docking ring, and together with the docking ring, form a ash discharge groove; the filter disc can also move away from the docking ring along the first direction and is spaced apart from the docking ring to form an ash discharge notch communicating with the ash discharge groove; and The pressure ring is arranged around the circumference of the filter disc and is movably arranged in the tube body in the first direction. The pressure ring and the ash discharge groove are arranged opposite to each other in the first direction.

[0005] In one embodiment, the pneumatic ash conveying pipeline assembly includes: A lifting mechanism is disposed within the tube and extends along a first direction. The filter disc is drively connected to the lifting mechanism so that the filter disc can reciprocate along the extending direction of the lifting mechanism. A support frame is located on the outer periphery of the lifting mechanism and is connected to the inner wall of the tube.

[0006] In one embodiment, the lifting mechanism includes a rotating rod and a lifting frame. The rotating rod is rotatably disposed in the middle of the tube body and passes through the filter disc. The lifting frame is movably disposed on the rotating rod and connected to one side of the filter disc to drive the filter disc to move along the first direction.

[0007] In one embodiment, the pneumatic ash conveying pipeline assembly further includes a control frame, which is rotatably disposed at one end of the rotating rod and has an adhesive strip facing the filter disc, at least a portion of the adhesive strip at the end away from the control frame abutting against the filter disc.

[0008] In one embodiment, a contact spring is provided between the filter disc and the support frame.

[0009] In one embodiment, an adapter ring is provided around the inner edge of the pressure ring, and the adapter ring is slidably connected to the pressure ring.

[0010] In one embodiment, a buffer spring is provided between the pressure ring and the adapter ring.

[0011] In one embodiment, the inner wall of the tube is further provided with a limiting block, the limiting block is located on the side of the pressure ring away from the filter disc, and a pressure spring is provided between the pressure ring and the limiting block.

[0012] In one embodiment, the pneumatic ash conveying pipe assembly further includes a blower mechanism, which includes a blower frame located on one side of the filter disc and extending radially along the pipe body, and is rotatably arranged around the axial direction of the pipe body.

[0013] The present invention also proposes a pneumatic ash conveying system, comprising the pneumatic ash conveying pipeline assembly described in any one of the preceding claims, wherein the pneumatic ash conveying pipeline assembly comprises: A tube body extending along a first direction; A docking ring is disposed on the inner wall of the tube body and is arranged around the circumference of the tube body; A filter disc, wherein the docking disc has multiple filter holes and is movably disposed within the tube along the first direction; the outer circumferential surface of the filter disc can abut against the inner circumferential surface of the docking ring, and together with the docking ring, form a ash discharge groove; the filter disc can also move away from the docking ring along the first direction and is spaced apart from the docking ring to form an ash discharge notch communicating with the ash discharge groove; and The pressure ring is arranged around the circumference of the filter disc and is movably arranged in the tube body in the first direction. The pressure ring and the ash discharge groove are arranged opposite to each other in the first direction.

[0014] This invention provides a pneumatic ash conveying pipeline assembly, which has the following advantages compared with the prior art: The pneumatic ash conveying pipeline assembly of this invention features a filter disc that can be vertically and flexibly disposed within the pipe body, with a connecting ring surrounding the inner wall of the pipe body. This allows the filter disc to abut against the inner circumferential surface of the connecting ring, forming an ash discharge groove to intercept and store dust within the pipe body. Large dust particles can be broken up by a pressure ring. Furthermore, the filter disc can move away from the connecting ring along a first direction and be spaced apart from it to form an ash discharge gap connecting to the ash discharge groove, preventing long-term dust accumulation and blockage. Thus, through the cooperation of the filter disc, connecting ring, and pressure ring, dust accumulated in the ash discharge groove can be periodically discharged, reducing the risk of pipeline blockage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the pneumatic ash conveying pipeline assembly described in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the pneumatic ash conveying pipeline assembly described in an embodiment of the present invention; Figure 3 This is a partial structural diagram of the pneumatic ash conveying pipeline assembly described in an embodiment of the present invention; Figure 4 This is a cross-sectional view of a partial structure of the pneumatic ash conveying pipeline assembly described in an embodiment of the present invention; Figure 5 This is a partial structural diagram of the pneumatic ash conveying pipeline assembly described in an embodiment of the present invention from another perspective; Figure 6 This is a partial structural enlarged view of the pneumatic ash conveying pipeline assembly described in an embodiment of the present invention.

[0016] In the diagram, 100 is the pneumatic ash conveying pipeline assembly; 10 is the pipe body; 11 is the limiting block; 20 is the docking ring; 30 is the filter disc; 30a is the ash discharge chute; 40 is the pressure ring; 41 is the adapter ring; 43 is the pressure spring; 50 is the lifting mechanism; 51 is the rotating rod; 52 is the lifting frame; 60 is the support frame; 61 is the bonding spring; 70 is the control frame; 71 is the lifting block; 711 is the notch; 72 is the connecting channel; 73 is the connecting valve; 80 is the blower mechanism; 81 is the blower frame; and 90 is the bonding strip. Detailed Implementation

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0018] It should be understood that the terms "before," "after," etc., are used in this invention to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, "before" information can also be called "after" information, and "after" information can also be called "before" information, without departing from the scope of this invention.

[0019] like Figures 1 to 5 As shown, an embodiment of the pneumatic ash conveying pipeline assembly 100 of the present invention includes a pipe body 10, a docking ring 20, a filter disc 30, and a pressure ring 40. The pipe body 10 extends along a first direction. The docking ring 20 is disposed on the inner wall of the pipe body 10 and is arranged around the circumference of the pipe body 10. The docking disc has a plurality of filter holes and is movably disposed within the pipe body 10 along the first direction. The outer circumferential surface of the filter disc 30 can abut against the inner circumferential surface of the docking ring 20 and together with the docking ring 20 form an ash discharge groove 30a. The filter disc 30 can also move away from the docking ring 20 along the first direction and is spaced apart from the docking ring 20 to form an ash discharge gap communicating with the ash discharge groove 30a. The pressure ring 40 is arranged around the circumference of the filter disc 30 and is movably disposed within the pipe body 10 along the first direction. The pressure ring 40 and the ash discharge groove 30a are arranged opposite each other in the first direction.

[0020] Among them, the pipe body 10 is a pneumatic ash conveying pipe for thermal power plants. The connecting ring 20 and the filter disc 30 can be spliced ​​together to form a complete filter mechanism. This complete filter mechanism can be horizontally arranged inside the pipe body 10. The surfaces of the connecting ring 20 and the filter disc 30 are provided with multiple filter holes, and the two can work together to intercept dust particles passing through the pipe body 10.

[0021] Furthermore, the surface of the filter disc 30 is inclined relative to the first direction, and the outer diameter of the filter disc 30 gradually increases in the airflow direction; the surface of the mating ring 20 is inclined relative to the first direction, and the inner diameter of the mating ring 20 gradually decreases in the airflow direction. With this arrangement, the surface of the filter disc 30 and the surface of the mating ring 20 can be set at an angle, and the junction between them can be set in a depression, thereby forming a dust discharge trough 30a at the depression. The inclined surface of the filter disc 30 and the surface of the mating ring 20 guide the intercepted dust into the dust discharge trough 20a, thus allowing large, unfilterable dust particles to be stored in the dust discharge trough 20a.

[0022] It is understood that the pneumatic ash conveying pipeline assembly 100 of this embodiment of the invention allows the filter disc 30 to be raised and lowered, so that the filter disc 30 can abut against the inner circumferential surface of the docking ring 20 and form an ash discharge groove 30a with the docking ring 20 to intercept dust in the pipe body 10 and accumulate it in the ash discharge groove 30a, so that the pressure ring 40 can knock and break up large pieces of dust. On the other hand, the filter disc 30 can also move away from the docking ring 20 in a first direction and be spaced apart from the docking ring 20 to form an ash discharge gap between the docking ring 20 and the filter disc 30 that connects to the ash discharge groove 30a, so as to avoid dust accumulating on one side of the filter disc 30 for a long time and causing blockage. Thus, through the cooperation of the filter disc 30, the docking ring 20 and the pressure ring 40, the dust accumulated on the ash discharge groove 30a can be discharged periodically, thereby reducing the risk of blockage of the pipe body 10.

[0023] Furthermore, such as Figures 2 to 5 As shown, the pneumatic ash conveying pipeline assembly 100 of this embodiment includes a lifting mechanism 50 and a support frame 60. The lifting mechanism 50 is disposed inside the pipe body 10 and extends along a first direction. The filter disc 30 is connected to the lifting mechanism 50 in a transmission manner so that the filter disc 30 can reciprocate along the extending direction of the lifting mechanism 50. The support frame 60 is disposed on the outer periphery of the lifting mechanism 50 and is connected to the inner wall of the pipe body 10.

[0024] Specifically, the lifting mechanism 50 of this embodiment includes a rotating rod 51 and a lifting frame 52. The rotating rod 51 is rotatably disposed in the middle of the tube body 10 and passes through the filter disc 30. The lifting frame 52 is movably disposed on the rotating rod 51 and connected to one side of the filter disc 30 to drive the filter disc 30 to move along the first direction.

[0025] Optionally, in one feasible embodiment, the rotating rod 51 may, but is not limited to, be configured to rotate around a first direction under the drive of a motor or other driving mechanism. A mating mechanism is provided on the side of the support frame 60. The mating mechanism includes a mating wheel, an intermittent wheel, a positioning ring, and a positioning groove. The mating wheel is rotatably disposed on one side of the support frame 60, and the rotating rod 51 is engaged on one side of the mating wheel. The intermittent wheel overlaps on the upper surface of the mating wheel, and the positioning ring is engaged on one side of the intermittent wheel. A positioning groove is formed on the outer surface of the positioning ring, and a positioning rod overlaps on the surface of the positioning groove. The positioning rod is slidably disposed on one side of the support frame 60, and a lifting frame 52 overlaps on the top of the positioning rod. With this configuration, when the positioning ring rotates, it can drive the positioning rod to move up and down along the first direction, thereby driving the lifting frame 52 to move up and down. Thus, the linkage between the rotating rod 51 and the lifting frame 52 can be achieved through the mating mechanism, allowing the lifting frame 52 to drive the filter disc 30 to reciprocate along the first direction under the drive of the rotating rod 51. Of course, the technical solution of the present invention is not limited to this; specific embodiments can be set according to actual needs and are not limited here.

[0026] Furthermore, in some embodiments, such as Figure 4 As shown, in this embodiment of the invention, a contact spring 61 is provided between the filter disc 30 and the support frame 60. This arrangement helps to ensure the stability of the fit between the filter disc 30 and the support frame 60, and also helps to move the filter disc 30 toward the docking ring 20 and reset it by the elastic force of the contact spring 61 so as to dock with the docking ring 20.

[0027] like Figure 2 As shown, in this embodiment of the invention, an adapter ring 41 is provided around the inner edge of the pressure ring 40, and the adapter ring 41 is slidably connected to the pressure ring 40. Optionally, the projection of the pressure ring 40 in the first direction is located within the projection of the docking ring 20 in the first direction, and the projection of the adapter ring 41 in the first direction is located within the projection of the filter disk 30 in the first direction. This arrangement allows the shapes of the pressure ring 40 and the adapter ring 41 to be adapted to the docking ring 20 and the filter disk 30, respectively. Furthermore, since the adapter ring 41 is slidably connected to the pressure ring 40, when the filter disk 30 moves in the first direction and abuts against the adapter ring 41, the adapter ring 41 can be moved synchronously without the movement of the filter disk 30 being hindered by the adapter ring 41.

[0028] Furthermore, a buffer spring 42 is provided between the pressure ring 40 and the adapter ring 41 in this embodiment of the invention. Specifically, the adapter ring 41 can slide along the pressure ring 40, and by providing a buffer spring 42 between the two, the risk of damage from mutual collision is reduced.

[0029] Specifically, such as Figure 2As shown, the outer periphery of the adapter ring 41 may be provided with a flange, and the inner edge of the pressing ring 40 may be provided with a limiting step. The flange may be pressed onto the limiting step in the first direction, and the buffer spring 42 may be disposed between the limiting step and the flange. Of course, the technical solution of the present invention is not limited to this, and the specific implementation can be set according to actual needs, which is not limited here.

[0030] In this embodiment of the invention, the inner wall of the tube 10 is further provided with a limiting block 11, and a pressing spring 43 is provided between the pressing ring 40 and the limiting block 11. Specifically, in some embodiments, the pressing ring 40 can move towards the filter disc 30 under the elastic force of the pressing spring 43 and strike the ash discharge trough 30a in the depression, breaking up large pieces of dust in the depression.

[0031] The limiting block 11 can be provided in at least two ways, and at least two limiting blocks 11 are arranged around the circumference of the pressure ring 40. Each limiting block 11 can be connected to the pressure ring 40 through a pressure spring 43.

[0032] In one feasible embodiment, the side of the pressure ring 40 away from the filter disc 30 may also be provided with at least two connecting rods, each connecting rod being able to pass through a limiting block 11, and each connecting rod being fitted with a pressure spring 43. With this arrangement, the pressure spring 43 can be installed and positioned by the connecting rods, and the pressure ring 40 can be moved toward or away from the ash discharge trough 30a by driving the connecting rods to move along the first direction.

[0033] The pneumatic ash conveying pipeline assembly 100 of this embodiment further includes a control frame 70, which is rotatably disposed at one end of the rotating rod 51 and has an adhesive strip 90 facing the filter disc 30. At least a portion of the end of the adhesive strip 90 away from the control frame 70 abuts against the filter disc 30. With this arrangement, the control frame 70 can drive the adhesive strip 90 to rotate relative to the filter disc 30, so that the portion of the adhesive strip 90 abutting against the surface of the filter disc 30 can scrape away the dust on the surface of the filter disc 30.

[0034] Furthermore, a lifting block 71 is integrally provided on the upper surface of the control frame 70, a notch is provided on the lower surface of the lifting block 71, and an insertion spring 72 is provided between the lifting frame 52 and the control frame 70.

[0035] Specifically, at least one connecting rod connected to the lower pressure ring 40 can be bent and extended to one side of the lifting block 71. When the control frame 70 rotates, the lifting block 71 on it can rotate around the first direction and periodically lift the bent part of the connecting rod, thereby driving the connecting rod and the lower pressure ring 40 away from the filter disc 30. At this time, the lower pressure spring 43 can undergo elastic deformation under the pressure of the lower pressure ring 40 to accumulate elastic potential energy. When the lifting block 71 continues to rotate and disengages from the connecting rod, the lower pressure spring 43 can release the elastic potential energy and drive the lower pressure ring 40 to reset. This allows the lower pressure ring 40 to reciprocate in the first direction, so as to use the lower pressure ring 40 to strike and break up the dust accumulated at the ash discharge trough 30a. Optionally, the cross-sectional shape of the lifting block 71 can be set as a right triangle, and its hypotenuse can be used to lift the bent part of the connecting rod.

[0036] The pneumatic ash conveying pipe assembly 100 of this embodiment further includes a blower mechanism 80. The blower mechanism 80 includes a blower frame 81, which is located on one side of the filter disc 30 and extends radially along the pipe body 10, and is rotatably arranged around the axial direction of the pipe body 10. The blower mechanism 80 can blow air toward the filter disc 30, thereby blowing crushed dust to one side of the filter disc 30. Optionally, the end of the blower frame 81 is provided with an air outlet corresponding to the filter disc 30, so as to facilitate the blowing of dust located in the ash discharge trough 30a.

[0037] In some embodiments, the control frame 70 has a communication channel 72, a communication valve 73 is provided at the top of the communication channel 72, and an interface is provided in the middle of the blower frame 81. The interface can be connected to the communication valve 73 and communicate with the communication channel 72, so that air can be supplied to the blower frame 81 through the control frame 70.

[0038] Alternatively, in some embodiments, such as Figure 4 As shown, an air supply channel is formed within the rotating rod 51, extending through the rotating rod 51 along a first direction and connecting to the communication channel 72 of the control frame 70. Furthermore, an air supply mechanism, such as an air pump, can be provided at the end of the rotating rod 51 furthest from the control frame 70 to supply air to the blower frame 81. This arrangement also reduces the impact of dust inside the tube 10 on the air supply mechanism.

[0039] The present invention also proposes a pneumatic ash conveying system, which includes a pneumatic ash conveying pipeline assembly 100. The specific structure of the pneumatic ash conveying pipeline assembly 100 is as described in the above embodiments. Since the present pneumatic ash conveying system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A pneumatic ash conveying pipeline assembly, characterized in that, include: A tube body extending along a first direction; A docking ring is disposed on the inner wall of the tube body and is arranged around the circumference of the tube body; The filter disc has multiple filter holes and is movably disposed in the tube body along the first direction. The outer peripheral surface of the filter disc can abut against the inner peripheral surface of the docking ring and form a ash discharge groove with the docking ring. The filter disc can also move away from the docking ring along the first direction and be spaced apart from the docking ring to form an ash discharge gap that connects to the ash discharge groove. as well as The pressure ring is arranged around the circumference of the filter disc and is movably arranged in the tube body in the first direction. The pressure ring and the ash discharge groove are arranged opposite to each other in the first direction.

2. The pneumatic ash conveying pipeline assembly according to claim 1, characterized in that, The pneumatic ash conveying pipeline assembly includes: A lifting mechanism is disposed within the tube and extends along a first direction. The filter disc is drively connected to the lifting mechanism so that the filter disc can reciprocate along the extending direction of the lifting mechanism. A support frame is located on the outer periphery of the lifting mechanism and is connected to the inner wall of the tube.

3. The pneumatic ash conveying pipeline assembly according to claim 2, characterized in that, The lifting mechanism includes a rotating rod and a lifting frame. The rotating rod is rotatably disposed in the middle of the tube and passes through the filter disc. The lifting frame is movably disposed on the rotating rod and connected to one side of the filter disc to drive the filter disc to move along the first direction.

4. The pneumatic ash conveying pipeline assembly according to claim 3, characterized in that, The pneumatic ash conveying pipeline assembly also includes a control frame, which is rotatably disposed at one end of the rotating rod and has an adhesive strip facing the filter disc. At least a portion of the adhesive strip at the end away from the control frame abuts against the filter disc.

5. The pneumatic ash conveying pipeline assembly according to claim 2, characterized in that, A spring is provided between the filter disc and the support frame.

6. The pneumatic ash conveying pipeline assembly according to any one of claims 1 to 5, characterized in that, An adapter ring is provided around the inner edge of the pressure ring, and the adapter ring is slidably connected to the pressure ring.

7. The pneumatic ash conveying pipeline assembly according to claim 6, characterized in that, A buffer spring is provided between the pressure ring and the adapter ring.

8. The pneumatic ash conveying pipeline assembly according to claim 6, characterized in that, The inner wall of the tube is also provided with a limiting block, which is located on the side of the pressure ring away from the filter disc, and a pressure spring is provided between the pressure ring and the limiting block.

9. The pneumatic ash conveying pipeline assembly according to any one of claims 1 to 5, characterized in that, The pneumatic ash conveying pipeline assembly also includes a blower mechanism, which includes a blower frame located on one side of the filter disc and extending radially along the pipe body, and is rotatably arranged around the axial direction of the pipe body.

10. A pneumatic ash conveying system, characterized in that, Includes the pneumatic ash conveying pipeline assembly according to any one of claims 1 to 9.

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