Dust removal pipeline system

Abstract

The invention discloses a dust removal pipeline system which comprises a vertical pipeline, a horizontal pipeline and a control system, the vertical pipeline extends downwards to form an extension section, a heavy hammer valve is arranged at the bottom of the extension section and comprises a trigger mechanism and a sealing door, the trigger mechanism is in linkage with the sealing door according to the lever principle, and a pressure sensor is arranged in the extension section. The pressure sensor is connected with the control system, the control system comprises a signal processing module, an actuator driving module and a time delay module, the signal processing module converts an analog signal of the pressure sensor into an accumulated dust weight value, and when it is detected that the accumulated dust weight reaches a preset threshold value, the time delay module dynamically adjusts the opening holding time # imgabs0 # of the sealing door according to the weight value. Through the design of the extension section, accumulated dust is guided to the bottom for centralized treatment, and corner blockage is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal, and particularly to a dust removal pipeline system. Background Art

[0002] In an industrial dust removal system, dust accumulation is likely to form at the connection corner of the vertical pipeline and the horizontal pipeline due to the gravity of dust. Long-term accumulation will cause pipeline blockage and poor air flow. In severe cases, it may even lead to system shutdown or equipment damage. Traditional solutions mostly adopt gravity ash discharge or mechanical valve control, but there are still the following common technical defects:

[0003] Insensitive triggering mechanism:

[0004] The triggering weight threshold of the traditional heavy hammer valve is fixed and cannot be dynamically adjusted according to the dust type (such as particle size, humidity, density), resulting in false triggering (premature cleaning of light dust) or delayed triggering (overload of heavy dust accumulation), affecting the cleaning efficiency.

[0005] Relying on manual intervention:

[0006] Lack of real-time dust accumulation monitoring and feedback mechanism. It is necessary to regularly check the dust accumulation in the pipeline manually. This is not only inefficient but also unable to respond to the sudden blockage risk in a timely manner.

[0007] Incomplete cleaning

[0008] The valve closes too early or the ash discharge channel is designed unreasonably, resulting in some dust accumulation remaining, causing secondary blockage, and requiring repeated cleaning, reducing the operation stability of the system.

[0009] High maintenance complexity:

[0010] The traditional valve has a complex structure, and disassembly and maintenance are time-consuming and laborious. Moreover, the lack of modular design further exacerbates the shutdown loss.

[0011] The above problems are particularly prominent in high-dust industries such as metallurgy, chemical industry, and wood processing, seriously restricting the reliability and economy of the dust removal system. Although existing technologies have tried to alleviate the problems by optimizing the valve structure or introducing simple control logic, due to the lack of mechanical design redundancy, material performance shortcomings, and low automation level, it is still difficult to achieve high-efficiency, intelligent, and long-term dust accumulation cleaning. Therefore, there is an urgent need for a systematic solution to completely solve the dust accumulation blockage problem and improve the comprehensive performance of the industrial dust removal system through the deep integration of structural innovation, material upgrading, and intelligent control. Summary of the Invention

[0013] In order to overcome the above defects of the prior art, an embodiment of the present invention provides a dust removal pipeline system.

[0014] To achieve the above-mentioned purpose, the present invention provides a dust removal pipeline system, including a vertical pipeline, a horizontal pipeline and a control system, and its innovation lies in: the vertical pipeline is extended downward to form an extension section, the connection corner between the horizontal pipeline and the vertical pipeline is located above the extension section, and a weight valve is provided at the bottom of the extension section, the weight valve includes a trigger mechanism and a sealing door, the trigger mechanism links the sealing door through the lever principle, a pressure sensor is provided in the extension section, the pressure sensor is connected to the control system, the control system includes a signal processing module, an actuator driving module and a delay module, the signal processing module converts the analog signal of the pressure sensor into a dust accumulation weight value, and when it is detected that the dust accumulation weight reaches a preset threshold value, the delay module dynamically adjusts the opening and holding time of the sealing door according to the weight value , the calculation formula is: ,in The maximum value does not exceed 30s. To determine the weight of the accumulated dust, the actuator drive module controls the sealing door to close after the delay.

[0015] Furthermore, a valve body is fixed at the bottom of the above-mentioned extension section, and the sealing door is rotatably arranged inside the valve body through a hinge axis. The trigger mechanism includes a lever arm and a fulcrum, the fulcrum is fixed on the inside of the valve body, and a weight with an adjustable position is provided at one end of the lever arm, and the other end is fixed to the back of the sealing door.

[0016] Furthermore, the hinge axis has an extension arm extending horizontally outward, and a return spring is provided on the valve body. One end of the return spring is fixed to the valve body, and the other end is connected to the extension arm. The preload force of the return spring is greater than the sum of the deadweight and friction of the sealing door.

[0017] Furthermore, the delay module includes a cylinder and a groove, the cylinder is fixed on the outside of the valve body, the end of the cylinder piston is provided with a hemispherical joint, the cylinder is provided with an air circuit solenoid valve, the air circuit solenoid valve is electrically connected to the control system, and the air circuit solenoid valve receives a command signal from the control system to control the inflation and exhaust of the cylinder;

[0018] The axis of the cylinder piston is parallel to the opening direction of the sealing door. The end of the sealing door is provided with an extension surface extending horizontally outward. The groove is located on the extension surface. The depth D of the groove satisfies the formula: ,in is the maximum stroke of the piston;

[0019] When the sealing door is closed, the hemispherical joint is in a separated state from the groove. When the dust accumulation weight reaches the preset threshold, the control system triggers the air circuit solenoid valve to open, the cylinder pushes the piston out, the hemispherical joint is embedded in the groove and rolls to keep the sealing door open until the delay time ends.

[0020] Further, a sliding sleeve is fixed to the top of the above-mentioned weight, a graduated guide rail is provided at the end of the lever arm, anti-slip patterns are provided on the surface of the guide rail, the sliding sleeve is slidably arranged on the guide rail, a threaded hole is provided on the side wall of the sliding sleeve, and the sliding sleeve is fixed to the guide rail by a compression bolt passing through the threaded hole, so that the position of the sliding sleeve is fixed on the guide rail.

[0021] Further, a dust collection hopper is provided at the bottom of the above-mentioned extension section, and its outlet is communicated with the inlet of the weight valve through a flange. The inclination angle of the side wall of the dust collection hopper , is greater than the angle of repose of the dust. An eccentric motor vibrator is provided at the bottom of the dust collection hopper. The eccentric motor vibrator is linked with the control system and starts when the sealing door is opened. The vibration frequency satisfies the formula: .

[0022] Further, a flow deflector is provided at the above-mentioned connection corner. The curved arc of the flow deflector matches the air flow direction, and the end of the flow deflector extends 10 cm above the inlet of the dust collection hopper to guide the air flow to cooperate with the direction of the accumulated ash flow.

[0023] Further, the above-mentioned control system further includes a fault diagnosis module. When an abnormal signal of the pressure sensor or an overrun of the cylinder action is detected, the fault diagnosis module is triggered and switched to the manual control mode.

[0024] Further, a tungsten carbide bushing is inlaid on the inner wall of the above-mentioned groove. The thickness of the tungsten carbide bushing is 2 mm, and the surface of the hemispherical joint is plated with hard chromium with a thickness of 0.05 mm. The gap between the two is ≤ 0.1 mm.

[0025] Further, a locking clamp is provided on the outside of the above-mentioned flange, and a silicone sealing gasket is embedded on the inside.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1. Precise triggering: The adjustable weight and lever ratio design adapt to different dust characteristics and improve the triggering sensitivity.

[0028] 2. Guarantee of thorough cleaning: The synergistic effect of the vibrator and the dynamic delay control ensures that the accumulated ash is completely discharged and avoids secondary blockage.

[0029] 3. Intelligence and low maintenance: The pressure sensor and the fault diagnosis module realize automatic monitoring, reduce manual intervention; the detachable flange design reduces the maintenance cost.

[0030] 4. Airflow optimization: The extended design of the flow deflector reduces turbulence and reduces the risk of accumulated ash from the source. Brief Description of the Drawings

[0032] Figure 1 is a side structure diagram of the present invention.

[0033] Figure 2 This is a surface sectional view of the sealing door of the present invention.

[0034] Figure 3 This is a partially enlarged view of the dust collection hopper and the eccentric motor vibrator of the present invention.

[0035] Figure 4 This is a logic framework diagram of the control system of the present invention. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Such as Figures 1 to 2 This is a specific structure diagram of the dust removal pipeline system of the present invention, where:

[0039] Vertical pipeline 1 and extension section 11:

[0040] The vertical pipeline 1 extends downward to form the extension section 11, and the length of the extension section 11 is usually 1-2 meters, which is specifically adjusted according to the dust characteristics.

[0041] The bottom of the extension section 11 is connected to the weight valve 4 through a flange 8 to ensure that the accumulated ash smoothly enters the valve body.

[0042] Horizontal pipeline 2 and connecting corner 3:

[0043] The connecting corner 3 between the horizontal pipeline 2 and the vertical pipeline 1 is located above the extension section 11 to prevent the accumulated ash from directly accumulating at the corner.

[0044] The deflector 9 is welded inside the corner, and its curved surface radian matches the air flow direction to reduce the dust retention caused by turbulence.

[0045] Weight valve 4 and dust collection hopper 5:

[0046] The weight valve 4 includes a trigger mechanism 41 and a sealing door 42, and controls the ash discharge through the lever principle.

[0047] The dust collection hopper 5 is located at the bottom of the extension section, the side wall inclination angle is 60°, and the outlet is connected to the inlet of the weight valve through a flange 8.

[0048] Maintenance convenience design

[0049] A locking clamp 82 is provided on the outer side of the flange 8, and a silicone sealing washer is embedded on the inner side. The disassembly time is ≤5 minutes, which supports the quick replacement of worn parts.

[0050] Technical advantages:

[0051] Through the extension section design, the dust accumulation is guided to the bottom for centralized treatment, avoiding blockage at the corners.

[0052] The deflector optimizes the air flow path and reduces the secondary deposition of dust in the pipeline.

[0053] Trigger mechanism 41:

[0054] The lever arm 413 rotates around the fulcrum 414, and the fulcrum is fixed inside the valve body 43.

[0055] The counterweight 411 adjusts its position on the scale guide 415 through the sliding sleeve 412 to set the trigger weight threshold.

[0056] Sealing door 42 and return spring 44:

[0057] The sealing door is rotatably installed inside the valve body through the hinge shaft 421 and completely covers the outlet when closed.

[0058] One end of the return spring 44 is fixed to the valve body 43, and the other end is connected to the extension arm 422 to provide a closing force.

[0059] Among them, "the pre-tightening force of the return spring is greater than the sum of the self-weight and friction force of the sealing door" is the core design criterion for ensuring the reliable closing of the sealing door in the present invention. Through mechanical balance and redundancy design, it solves the common sealing failure problems in traditional dust removal systems and significantly improves the automation level and durability of the system.

[0060] Cylinder 711 and groove 712 are linked:

[0061] The cylinder is fixed on the outer side of the valve body, and the axis of the piston 713 is parallel to the opening direction of the sealing door.

[0062] A hemispherical joint 717 is provided at the end of the piston and is embedded in the groove 712 on the extension surface 423 of the sealing door. The depth of the groove is 1.1 times the piston stroke ( ) to ensure rolling fit.

[0063] Technical advantages:

[0064] The adjustable counterweight and lever ratio design adapt to different dust characteristics and improve the trigger sensitivity.

[0065] The geometric matching of the groove and the hemispherical joint reduces mechanical shock and extends the service life of the components.

[0066] Figure 3 : Partial enlarged view of the dust collection hopper and the vibrator, where

[0067] Structure of dust collection hopper 5:

[0068] The side wall has an inclination angle of 60°, which is greater than the angle of repose of common dusts (such as 45° for cement dust), ensuring the natural sliding of the accumulated ash.

[0069] The end of the deflector 9 extends 10 cm above the inlet of the dust collection hopper, guiding the air flow to be coordinated with the flow direction of the accumulated ash.

[0070] Installation of eccentric motor vibrator 51:

[0071] The eccentric motor vibrator 51 is fixed at the bottom of the dust collection hopper, and the vibration frequency is matched with the inclination angle ( ).

[0072] The working duration of the vibrator is synchronously controlled by the delay module 71 to ensure the complete discharge of the accumulated ash.

[0073] Technical advantages:

[0074] The large-inclination side wall design combined with vibration assistance completely eliminates the residual accumulated ash.

[0075] The deflector optimizes the air flow direction and reduces the secondary accumulation of dust in the hopper.

[0076] Figure 4 : Logic block diagram of the control system

[0077] Description:

[0078] Signal processing module:

[0079] Receives the analog signal from the pressure sensor 6 and converts it into the value of the accumulated ash weight ( ).

[0080] Eliminates noise interference through a filtering algorithm to ensure data accuracy.

[0081] Delay module 71:

[0082] Dynamically adjusts the opening time of the sealing door , and the calculation formula is:

[0083] (Maximum 30 s)

[0084] Controls the opening and closing of the pneumatic solenoid valve and drives the cylinder 711 to act.

[0085] Actuator drive module:

[0086] According to the output of the delay module, controls the start and stop of the eccentric motor vibrator 51, and the vibration frequency is set according to

[0087] settings.

[0088] Fault diagnosis module:

[0089] Real-time monitor the sensor signals and actuator status, trigger an alarm and switch to the manual mode when abnormal.

[0090] Technical advantages:

[0091] The dynamic delay algorithm accurately matches the dust accumulation amount, avoiding resource waste or incomplete cleaning.

[0092] The fault diagnosis module improves the system reliability and reduces unplanned shutdowns.

[0093] Embodiment 1

[0094] Embodiment 1: Basic configuration under standard working conditions

[0095] Application scenario: Conventional workshop dust removal system, the dust type is wood chips or pulverized coal, the humidity is moderate, and there is no strong vibration.

[0096] Configuration details:

[0097] Pipeline layout:

[0098] The vertical pipeline 1 extends downward by 1.5 meters to form an extension section 11, and the horizontal pipeline 2 is connected to the corner 3 at the top of the extension section.

[0099] The deflector 9 is made of 304 stainless steel, and the curved end extends 10 cm above the inlet of the dust collector 5, and the radian matches the air flow direction.

[0100] Counterweight valve control:

[0101] The initial position of the counterweight 411 of the trigger mechanism 41 is set at the midpoint of the lever arm 413, the lever ratio is 1:2, and the trigger threshold is 50 kg.

[0102] The piston stroke S of the cylinder 711 is 50 mm, the depth D of the groove 712 is 55 mm, the inner wall of the groove 712 is inlaid with a tungsten carbide bushing, the thickness of the tungsten carbide bushing is 2 mm, the surface of the hemispherical joint 717 is plated with hard chromium, and the gap ≤ 0.1 mm.

[0103] Dust collector optimization:

[0104] The inclination angle of the side wall of the dust collector is 60°, the frequency f of the vibrator 51 is 30 Hz, and the working duration is synchronized with the delay module.

[0105] The deflector 9 guides the air flow velocity of 5 m / s, reducing dust accumulation retention.

[0106] Control logic:

[0107] The pressure sensor range is 0 - 100 kg, the trigger threshold is 50 kg, and the delay time , up to 30 seconds.

[0108] The fault diagnosis module monitors the sensor signals. When an abnormality occurs, it triggers an audible and visual alarm and switches to the manual mode.

[0109] Technical effects:

[0110] The ash cleaning efficiency is increased by 40%, and the valve life reaches 100,000 opening and closing cycles.

[0111] Finally, several points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the internal communication of two components. It can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0112] Second: In the attached drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0113] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust removal pipeline system, comprising a vertical pipeline (1), a horizontal pipeline (2) and a control system, characterized in that: The vertical pipe (1) is extended downward to form an extension section (11); a connecting corner (3) between the horizontal pipe (2) and the vertical pipe (1) is located above the extension section (11); a weight valve (4) is provided at the bottom of the extension section (11); the weight valve (4) comprises a trigger mechanism (41) and a sealing door (42); the trigger mechanism (41) is linked to the sealing door (42) through a lever principle; a pressure sensor is provided in the extension section (11); the pressure sensor is connected to a control system; the control system comprises a signal processing module, an actuator driving module and a delay module (71); the signal processing module converts an analog signal of the pressure sensor into an accumulated dust weight value; when it is detected that the accumulated dust weight reaches a preset threshold value, the delay module (71) dynamically adjusts the opening holding time of the sealing door (42) according to the weight value , the calculation formula is: ,in The maximum value does not exceed 30s. Based on the weight of the accumulated dust, the actuator drive module controls the sealing door (42) to close after the delay ends.

2. A dust removal pipeline system according to claim 1, characterized in that: A valve body (43) is fixed to the bottom of the extension section (11); the sealing door (42) is rotatably arranged inside the valve body (43) via a hinge shaft (421); the trigger mechanism (41) comprises a lever arm (413) and a fulcrum (414); the fulcrum (414) is fixed to the inside of the valve body (43); a weight (411) whose position can be adjusted is provided at one end of the lever arm (413); and the other end is fixed to the back of the sealing door (42).

3. A dust removal pipeline system according to claim 2, characterized in that: The hinge shaft (421) is horizontally extended outward to form an extension arm (422); the valve body (43) is provided with a return spring (44); one end of the return spring (44) is fixed to the valve body (43), and the other end is connected to the extension arm (422); the preload force of the return spring (44) is greater than the sum of the deadweight and friction of the sealing door (42).

4. A dust removal pipeline system according to claim 2, characterized in that: The delay module (71) comprises a cylinder (711) and a groove (712); the cylinder (711) is fixed on the outside of the valve body (43); the end of the piston (713) of the cylinder (711) is provided with a hemispherical joint (717); the cylinder (711) is provided with an air circuit solenoid valve; the air circuit solenoid valve is electrically connected to the control system; the air circuit solenoid valve receives a command signal from the control system and controls the inflation and exhaust of the cylinder (711); The axis of the piston (713) of the cylinder (711) is parallel to the opening direction of the sealing door (42). The end of the sealing door (42) is provided with an extension surface (423) extending horizontally outward. The groove (712) is located on the extension surface (423). The depth D of the groove (712) satisfies the formula: ,in is the maximum stroke of the piston (713); When the sealing door (42) is closed, the hemispherical joint (717) and the groove (712) are in a separated state; when the dust accumulation weight reaches a preset threshold, the control system triggers the air circuit solenoid valve to open, the cylinder (711) pushes the piston (713) to extend, and the hemispherical joint (717) is embedded in the groove (712) and rollingly engaged, thereby keeping the sealing door (42) open until the delay time ends.

5. A dust removal pipeline system according to claim 2, characterized in that: A sliding sleeve (412) is fixed to the top of the weight (411); a guide rail (415) with a scale is provided at the end of the lever arm (413); a surface of the guide rail (415) is provided with anti-slip grooves; the sliding sleeve (412) is slidably arranged on the guide rail (415); a threaded hole (416) is provided on the side wall of the sliding sleeve (412); the sliding sleeve (412) is pressed against the guide rail (415) by a clamping bolt (417) passing through the threaded hole (416), so that the position of the sliding sleeve (412) is fixed on the guide rail (415).

6. A dust removal pipeline system according to claim 1, characterized in that: A dust collecting hopper (5) is provided at the bottom of the extension section (11), the outlet of which is connected to the inlet of the weight valve (4) via a flange (8), and the side wall of the dust collecting hopper (5) is inclined at an angle of , The dust collecting hopper (5) is provided with an eccentric motor vibrator (51) at the bottom thereof. The eccentric motor vibrator (51) is linked to the control system and is started when the sealing door (42) is opened. The vibration frequency Satisfy the formula: .

7. A dust removal pipeline system according to claim 6, characterized in that: A guide plate (9) is provided at the connecting corner (3), the curvature of the curved surface of which matches the direction of the airflow, and the end of the guide plate (9) extends to 10 cm above the entrance of the dust hopper (5), so as to guide the airflow to cooperate with the dust accumulation flow direction.

8. A dust removal pipeline system according to claim 4, characterized in that: The control system further comprises a fault diagnosis module, which triggers the fault diagnosis module and switches to a manual control mode when an abnormal pressure sensor signal or a cylinder action timeout is detected.

9. The dust removal pipeline system according to claim 4, characterized in that: The inner wall of the groove (712) is inlaid with a tungsten carbide bushing, the thickness of the tungsten carbide bushing is 2 mm, and the surface of the hemispherical joint (717) is plated with hard chrome with a thickness of 0.05 mm, and the gap between the two is ≤ 0.1 mm.

10. The dust removal pipeline system according to claim 6, characterized in that: The flange (8) is provided with a locking clamp (82) on the outside and a silicone sealing gasket on the inside.

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