Cleaning device for accumulated dust in pipeline

Abstract

The embodiment of the utility model provides a cleaning device for accumulated dust in a pipeline, and belongs to the technical field of dust removal. The cleaning device comprises a blowing air bag group, one end of each blowing pipeline is connected with the blowing air bag group, and the other end of each blowing pipeline is used for extending into a pipeline to be cleaned; the air supply system is connected with the blowing air bag group and is used for supplying air to the plurality of blowing pipelines through the blowing air bag group; and the driving mechanism comprises a driving part and a transmission mechanism connected with the multiple blowing pipelines, and the driving part is connected with the transmission mechanism and used for driving each blowing pipeline to rotate around the axis of the blowing pipeline through the transmission mechanism. The cleaning device can solve the problem of dust accumulation of most pipelines, and the situation that the pipeline resistance is increased and the equipment stability is affected due to serious blockage caused by dust accumulation is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal, and in particular relates to a cleaning device for dust accumulation in a pipeline. Background Art

[0002] The pollution of the coking process mainly lies in the large amount of pollutant-containing waste gas generated during the heating process of the coke oven. The waste gas passes through the negative pressure generated by the operation of the desulfurization induced draft fan from the coke oven flue through the denitrification reactor and the desulfurization tower to the desulfurization dust collector system. The heated waste gas is filtered and dusted by the dust filter bag of the desulfurization dust removal system, and finally the clean gas is discharged into the environment in compliance with the standards. However, since the desulfurization process requires a large amount of powdered calcium hydroxide for desulfurization, the powdered calcium hydroxide enters the desulfurization dust collector together with the waste gas through the negative pressure generated by the operation of the desulfurization induced draft fan. Due to the increase in the specific gravity of calcium hydroxide or the change in flow rate, the calcium hydroxide is easily deposited in the dust removal pipe of the desulfurization dust collector, which directly increases the resistance of the dust collector and affects the stability of the system. Utility Model Content

[0003] In view of the above problems existing in the prior art, the purpose of the embodiment of the utility model is to provide a cleaning device for dust accumulation in pipelines. The cleaning device can solve most of the dust accumulation problems in pipelines and avoid the increase of pipeline resistance caused by serious blockage of dust accumulation, which affects the stability of equipment.

[0004] The technical solution adopted in the embodiment of the utility model is:

[0005] A cleaning device for dust accumulation in a pipeline, comprising:

[0006] Blowing air bag group;

[0007] A plurality of blowing pipes, one end of each blowing pipe is connected to the blowing air bag group, and the other end is used to extend into the pipe to be cleaned;

[0008] An air supply system, connected to the blowing air bag group, for supplying air to the plurality of blowing pipes respectively through the blowing air bag group;

[0009] The driving mechanism comprises a driving member and a transmission mechanism connected to the plurality of the spray pipes, wherein the driving member is connected to the transmission mechanism and is used to drive each of the spray pipes to rotate around its own axis through the transmission mechanism.

[0010] Furthermore, the air supply system includes a compressed air storage tank and a compressed air pipeline, and the compressed air pipeline is used to connect the compressed air storage tank and the blowing air bag group for transmitting compressed air.

[0011] Furthermore, a pressure reducing valve is provided at one end of the compressed air pipeline connected to the compressed air storage tank, and a switch control valve is provided at one end of the compressed air pipeline connected to the blowing air bag group.

[0012] Furthermore, the cleaning device also includes a material detector and a main control system. The material detector and the driving component are electrically connected to the main control system respectively. The material detector is fixed on the pipeline to be cleaned to detect dust accumulation in the pipeline.

[0013] Furthermore, the material detector is a radar material detector.

[0014] Furthermore, the cleaning device also includes a positioning system, which includes a limit sensing block fixed on the blowing pipe and a plurality of magnetic limit switches arranged around the blowing pipe, and the plurality of magnetic limit switches are respectively electrically connected to the overall control system.

[0015] Furthermore, the blowing air bag group is provided with a pulse valve corresponding to the plurality of blowing pipes one by one, and the pulse valve can control the opening and closing of the corresponding blowing pipes;

[0016] The cleaning device also includes an electromagnetic pulse control system electrically connected to the plurality of pulse valves respectively.

[0017] Furthermore, a plurality of the spray pipes are arranged at intervals along the extension direction of the pipe to be cleaned;

[0018] The driving member is a driving motor, and the transmission mechanism includes a driving gear and a plurality of pipe gears corresponding to the plurality of blowing pipes one by one. One pipe gear is fixed to each of the blowing pipes, and the pipe gears on two adjacent blowing pipes are meshed with each other. The driving gear is fixed to the motor shaft of the driving motor and is meshed with the pipe gears on the blowing pipes located at the head end or the end along the arrangement direction of the plurality of blowing pipes.

[0019] Furthermore, there are multiple blowing air bag groups, each of which is connected to multiple blowing pipes, and the multiple blowing air bag groups are arranged at intervals along the extension direction of the pipe to be cleaned.

[0020] Furthermore, the blowing air bag group is located above the pipeline to be cleaned.

[0021] Compared with the prior art, the beneficial effects of the embodiments of the present invention are:

[0022] The cleaning device of the utility model can be used on the pipeline of the dust collector in the semi-dry desulfurization system to blow and clean the dust deposited at the bottom of the pipeline, reduce the dust deposition, reduce the pipeline resistance, and stabilize the desulfurization system.

[0023] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to restrict the present invention.

[0024] The overview of various implementations or examples of the technology described in this utility model is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the embodiments of the utility model. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts.

[0026] Figure 1 This is a schematic diagram of the structure of a device for cleaning dust accumulation in a pipeline according to an embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the driving mechanism in the cleaning device for dust accumulation in a pipeline according to an embodiment of the utility model;

[0028] Figure 3 The present invention is a schematic structural diagram of a positioning system in a device for cleaning dust accumulation in a pipeline according to an embodiment of the present invention.

[0029] In the figure: 1. Pipeline to be cleaned; 2. Blowing air bag group; 3. Blowing pipeline; 4. Compressed air storage tank; 5. Compressed air pipeline; 6. Electromagnetic pulse control system; 7. Pressure reducing valve; 8. Switch control valve; 9. Pulse valve; 10. Drive motor; 11. Driving gear; 12. Pipeline gear; 13. Magnetic limit switch; 14. Limit sensor block; 15. Material detector. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] like Figures 1 to 3 As shown, an embodiment of the utility model provides a cleaning device for dust accumulation in a pipeline, and the cleaning device mainly includes a spraying air bag group 2, a plurality of spraying pipelines 3, an air supply system and a driving mechanism.

[0033] One end of each of the multiple blowing pipes 3 is connected to the blowing air bag group 2, and the other end is used to extend into the pipeline 1 to be cleaned.

[0034] The air supply system is connected to the blowing air bag group 2 so as to deliver compressed gas to the plurality of blowing pipes 3 through the blowing air bag group 2 respectively, thereby forming a dust cleaning power and using the compressed gas to disperse the accumulated dust in the pipes.

[0035] The driving mechanism includes a driving member and a transmission mechanism connected to multiple spray pipes 3. The driving member is connected to the transmission mechanism and is used to drive each spray pipe 3 to rotate around its own axis through the transmission mechanism, thereby achieving all-round dust removal of the pipes.

[0036] The cleaning device of this embodiment can be used on the pipeline of the dust collector in the semi-dry desulfurization system to blow away the dust deposited at the bottom of the pipeline, reduce dust deposition, reduce pipeline resistance, and stabilize the desulfurization system.

[0037] Of course, the cleaning device of this embodiment can also be used for dust removal in dust removal pipes in other fields. This embodiment only takes the dust removal pipe in the dust collector in the semi-dry desulfurization system as an example for explanation.

[0038] like Figure 1 As shown, in some embodiments, the air supply system includes a compressed air storage tank 4 and a compressed air pipeline 5. The compressed air storage tank 4 is used to store compressed gas, and the compressed air pipeline 5 is used to connect the compressed air storage tank 4 and the blowing air bag group 2 for the transportation of compressed gas.

[0039] There is at least one compressed air storage tank 4, which can be installed on site and connected to a compressed air preparation system for use as a compressed air storage device.

[0040] Preferably, a pressure reducing valve 7 is provided at one end of the compressed air pipeline 5 of this embodiment that is connected to the compressed air storage tank 4. The pressure of the compressed air can be adjusted as needed by controlling the pressure reducing valve 7.

[0041] One end of the compressed air pipeline 5 connected to the blowing air bag group 2 is provided with a switch control valve 8, through which the switch control valve 8 can be used to control whether the compressed gas enters the blowing air bag group 2.

[0042] The pressure reducing valve 7 and the switch control valve 8 are respectively connected to the main control system of the cleaning device, and the pressure reducing valve 7 and the switch control valve 8 are respectively controlled by the main control system.

[0043] like Figure 1 As shown, in some embodiments, the number of the blowing air bag groups 2 can be multiple, and the multiple blowing air bag groups 2 are arranged at intervals along the extension direction of the pipeline 1 to be cleaned, and each blowing air bag group 2 corresponds to multiple blowing pipelines 3.

[0044] Furthermore, the multiple blowing pipes 3 on each blowing air bag group 2 are arranged at intervals along the extension direction of the pipeline 1 to be cleaned.

[0045] By providing a plurality of blowing air bag groups 2 and configuring a plurality of blowing pipes 3 for each blowing air bag group 2, the cleaning range on the pipe 1 to be cleaned can be increased.

[0046] When there are multiple blowing air bag groups 2, the blowing pipeline 3 is connected to each blowing air bag group 2 through a branch pipeline, and the switch control valve 8 corresponding to each blowing air bag group 2 is respectively arranged on the corresponding branch pipeline, and these switch control valves 8 can be respectively controlled to control all the blowing air bag groups 2. For example, when dust is easily accumulated in a certain range in the pipeline 1 to be cleaned, the switch control valve 8 on the corresponding blowing air bag group 2 in the range can be opened, and the switch control valves 8 on the remaining blowing air bag groups 2 can be closed.

[0047] The number of the blowing air bag groups 2 can be determined according to the length of the pipeline 1 to be cleaned, and each blowing air bag group 2 is respectively configured with 4 to 5 blowing pipelines 3. The specific structure of the blowing air bag group 2 belongs to the prior art and will not be described in detail.

[0048] like Figure 1 As shown, the blowing air bag group 2 of this embodiment is located above the pipeline 1 to be cleaned, and each blowing pipeline 3 is a straight pipe, the top end of which is connected to the blowing air bag group 2 and the bottom end extends into the pipeline 1 to be cleaned.

[0049] The multiple blowing pipes 3 on each blowing air bag group 2 are parallel to each other, and the bottom end of each blowing pipe 3 is bent 90 degrees, and the bending directions are the same, thereby ensuring that the multiple blowing pipes 3 can spray compressed gas in one direction at the same time.

[0050] In addition, in order to increase the blowing range of the multiple blowing pipes 3 on the blowing air bag group 2, the lengths of the multiple blowing pipes 3 can be different.

[0051] like Figure 2 As shown, in some embodiments, the cleaning device further comprises a material detector 15. The material detector 15 and the driving member in the driving mechanism are electrically connected to the main control system respectively.

[0052] The material detector 15 is fixed on the pipeline to be cleaned 1 to detect the dust accumulation in the pipeline. The material detector 15 can feed back the detected dust accumulation related parameters to the control system, and the control system controls the driving member according to the feedback.

[0053] Specifically, the material detector 15 of this embodiment can be a radar material detector, which is fixed on the pipe wall of the pipe 1 to be cleaned. It sends radar waves to the inside of the pipe 1 to be cleaned to obtain the dust accumulation condition of the pipe (for example, by obtaining the dust thickness in the pipe, etc.), and then feeds back the detected dust accumulation condition to the main control system. The dust accumulation alarm value (for example, the dust thickness alarm value) can be input into the main control system. When the dust thickness at a certain point in the pipe monitored by the radar material detector reaches the alarm value, the main control system can control the multiple blowing pipes 3 to rotate through the driving parts until their pipe mouths are respectively opposite to the positions exceeding the alarm value, thereby performing dust removal work.

[0054] like Figure 1 and Figure 3 As shown, in some embodiments, the cleaning device further includes a positioning system, which includes a limit sensing block 14 fixed on the spray pipe 3 and a plurality of magnetic limit switches 13 arranged around the spray pipe 3. The limit sensing block 14 can be an iron block welded on the spray pipe 3.

[0055] Multiple magnetic limit switches 13 can be fixed on the outer wall of the blowing pipe 3 respectively, and are also electrically connected to the main control system of the cleaning device respectively. When the blowing pipe 3 rotates, when the limit sensing block 14 is opposite to one of the magnetic limit switches 13, the magnetic limit switch 13 senses the limit sensing block 14 and then feeds back to the main control system, and the main control system can control the blowing pipe 3 to stop rotating.

[0056] The radar material detector can send radar waves into the pipeline to monitor the dust accumulation situation. When it is detected that there is still dust accumulation in a certain position around the blowing pipe 3 or the thickness of the dust accumulation exceeds the alarm value, the main control system can control the blowing pipe 3 to rotate through the driving member until its pipe mouth is opposite to the position where the dust accumulation exists. After the magnetic limit switch 13 corresponding to this position senses the limit sensing block 14, the blowing pipe 3 stops rotating, and then starts the blowing work until the dust accumulation reaches below the alarm value and the blowing is stopped.

[0057] If the radar material detector detects that dust is accumulated in multiple locations around the injection pipe 3 or the dust accumulation exceeds the alarm value, the main control system can start dust removal according to the position with the highest alarm value in the multiple locations, and then start dust removal one by one.

[0058] Preferably, when there are multiple blowing air bag groups 2 in this embodiment, each blowing air bag group 2 corresponds to a group of positioning systems and a material detector 15 .

[0059] like Figure 1 As shown, in some embodiments, each blowing air bag group 2 is provided with a pulse valve 9 corresponding to a plurality of blowing pipes 3 one by one, and each pulse valve 9 can control the opening and closing of the corresponding blowing pipe 3.

[0060] Furthermore, the cleaning device of this embodiment also includes an electromagnetic pulse control system 6 electrically connected to the pulse valves 9 on the plurality of spray pipes 3. The electromagnetic pulse control system 6 controls the cyclic spraying of the plurality of spray pipes 3 through the pulse valves 9 to purge the accumulated dust deposited at the bottom of the pipes.

[0061] like Figure 2 As shown, in some embodiments, the driving member in the driving mechanism may be a driving motor 10. Correspondingly, the transmission mechanism includes a driving gear 11 and pipeline gears 12 corresponding to the plurality of spray pipelines 3 one by one.

[0062] Furthermore, a pipe gear 12 is fixed on each spray pipe 3. When a plurality of spray pipes 3 are arranged at intervals along the extension direction of the pipe 1 to be cleaned, the pipe gears 12 on two adjacent spray pipes 3 mesh with each other.

[0063] The motor shaft of the driving motor 10 is connected to the driving gear 11. The driving motor 10 is located on one side of the multiple blowing pipes 3. The driving gear 11 thereon is engaged with the pipe gear 12 on the blowing pipes 3 located at the head end or the end end along the arrangement direction of the multiple blowing pipes 3, so that the driving motor 10 can drive the multiple blowing pipes 3 to rotate simultaneously.

[0064] It should be noted that the installation position of the drive motor 10 of this embodiment is not specifically limited. The drive motor 10 can be directly fixed on the outer wall of the pipe to be cleaned 1, or a bracket can be separately provided outside the pipe to be cleaned 1 for installing the drive motor 10.

[0065] The above description is intended to be illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more of them) may be used in combination with each other, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

Claims

1. A cleaning device for dust accumulation in a pipeline, characterized in that: include: Blowing air bag group; A plurality of blowing pipes, one end of each blowing pipe is connected to the blowing air bag group, and the other end is used to extend into the pipe to be cleaned; An air supply system, connected to the blowing air bag group, for supplying air to the plurality of blowing pipes respectively through the blowing air bag group; The driving mechanism comprises a driving member and a transmission mechanism connected to the plurality of the spray pipes, wherein the driving member is connected to the transmission mechanism and is used to drive each of the spray pipes to rotate around its own axis through the transmission mechanism.

2. A cleaning device for dust accumulation in a pipeline as claimed in claim 1, characterized in that: The air supply system includes a compressed air storage tank and a compressed air pipeline, and the compressed air pipeline is used to connect the compressed air storage tank and the blowing air bag group to transmit compressed air.

3. A cleaning device for dust accumulation in a pipeline as claimed in claim 2, characterized in that: A pressure reducing valve is provided at one end of the compressed air pipeline connected to the compressed air storage tank, and a switch control valve is provided at one end of the compressed air pipeline connected to the blowing air bag group.

4. A cleaning device for dust accumulation in a pipeline as claimed in claim 1, characterized in that: The cleaning device also includes a material detector and a main control system. The material detector and the driving member are electrically connected to the main control system respectively. The material detector is fixed on the pipeline to be cleaned to detect dust accumulation in the pipeline to be cleaned.

5. A cleaning device for dust accumulation in a pipeline as claimed in claim 4, characterized in that: The material detector is a radar material detector.

6. A cleaning device for dust accumulation in a pipeline as claimed in claim 4, characterized in that: The cleaning device also includes a positioning system, which includes a limit sensing block fixed on the blowing pipe and a plurality of magnetic limit switches arranged around the blowing pipe. The plurality of magnetic limit switches are electrically connected to the main control system respectively.

7. A cleaning device for dust accumulation in a pipeline as claimed in claim 1, characterized in that: The blowing air bag group is provided with a pulse valve corresponding to the plurality of blowing pipes one by one, and the pulse valve can control the opening and closing of the corresponding blowing pipe; The cleaning device also includes an electromagnetic pulse control system electrically connected to the plurality of pulse valves respectively.

8. A cleaning device for dust accumulation in a pipeline as claimed in claim 1, characterized in that: A plurality of the spray pipes are arranged at intervals along the extension direction of the pipe to be cleaned; The driving member is a driving motor, and the transmission mechanism includes a driving gear and a plurality of pipe gears corresponding to the plurality of blowing pipes one by one. One pipe gear is fixed to each of the blowing pipes, and the pipe gears on two adjacent blowing pipes are meshed with each other. The driving gear is fixed to the motor shaft of the driving motor and is meshed with the pipe gears on the blowing pipes located at the head end or the end along the arrangement direction of the plurality of blowing pipes.

9. A cleaning device for dust accumulation in a pipeline as claimed in claim 1, characterized in that: There are multiple blowing air bag groups, each of which is connected to multiple blowing pipes respectively, and the multiple blowing air bag groups are arranged at intervals along the extension direction of the pipe to be cleaned.

10. The cleaning device for dust accumulation in a pipeline according to claim 1, characterized in that: The blowing air bag group is located above the pipeline to be cleaned.

Images