Vacuum feeding machine pulse blowing system and vacuum feeding machine

Abstract

The application provides a vacuum feeding machine pulse blowing system and a vacuum feeding machine, and relates to the technical field of vacuum feeding machines. The vacuum feeding machine pulse blowing system provided by the application comprises a blowing assembly, a pulse valve and a control unit. The blowing assembly comprises a main pipeline and a plurality of blowing pipes. The main pipeline is horizontally arranged above a plurality of filter cartridges of the vacuum feeding machine. The pulse valve is arranged at an air inlet of the main pipeline. The main pipeline comprises a plurality of sequentially connected connecting pipes. The diameters of the plurality of connecting pipes gradually decrease along an air inlet direction of the main pipeline. One blowing pipe is correspondingly arranged on one connecting pipe. The positions of the blowing pipes and the filter cartridges are one-to-one corresponding. The first end of the blowing pipe is communicated with the connecting pipe, and the second end of the blowing pipe faces a blowing port of the filter cartridge. The diameter of the first end of the blowing pipe is larger than the diameter of the second end of the blowing pipe. The connection between the blowing pipe and the main pipeline is transitioned through a circular arc. The vacuum feeding machine pulse blowing system and the vacuum feeding machine can improve the dust removal effect and efficiency of the filter cartridges.

Description

Technical Field

[0001] This application relates to the field of vacuum feeder technology, and in particular to a vacuum feeder pulse jet system and a vacuum feeder. Background Technology

[0002] In the application of vacuum feeders, the pulse jet cleaning system is a crucial component for ensuring the normal operation of filter elements and maintaining stable equipment operation. Its main function is to remove dust from the filter elements by pulse jet cleaning, thereby ensuring the filtration performance of the filter elements.

[0003] The existing pulse jet cleaning system of vacuum feeders has significant shortcomings: Firstly, the dust removal effect on multiple filter cartridges is uneven; while some filter cartridges are effectively cleaned, many others are not thoroughly cleaned. Secondly, due to the unreasonable structural design of the jet pipe, airflow is prone to leaking to the outside of the filter cartridges during the jet cleaning process. This not only wastes the jet gas but also reduces the effective airflow acting on the filter bags, thereby lowering the dust removal effect and efficiency. Utility Model Content

[0004] To address at least one of the problems mentioned in the background art, this application provides a vacuum feeder pulse jet cleaning system and a vacuum feeder, which can improve the dust removal effect and efficiency of filter elements.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] In a first aspect, this application provides a pulse jet system for a vacuum feeder, including a jet assembly, a pulse valve, and a control unit. The jet assembly includes a main pipeline and multiple jet pipes. The main pipeline is horizontally positioned above multiple filter elements of the vacuum feeder. The pulse valve is located at the air inlet of the main pipeline to control the opening or closing of the air inlet of the main pipeline, thereby periodically jetting pulse gas into the main pipeline.

[0007] The main pipeline includes multiple connecting pipes connected in sequence. The diameter of the multiple connecting pipes decreases successively along the air intake direction of the main pipeline, and a blow pipe is correspondingly installed on each connecting pipe.

[0008] The positions of the blowpipe and the filter element are one-to-one, and the first end of the blowpipe is connected to the connecting pipe, and the second end is facing the air blowing port of the filter element, so as to blow pulse gas into the corresponding filter element through the blowpipe, thereby blowing dust off the filter bag in the filter element.

[0009] The diameter of the first end of the blowpipe is larger than the diameter of the second end of the blowpipe, and the connection between the blowpipe and the main pipeline is made by a rounded transition.

[0010] The control unit and the pulse valve are electrically connected, and the control unit is used to control the pulse valve to perform its actions.

[0011] As an optional implementation, the distance between the second end of the blowpipe and the air outlet of the filter element is 30mm-50mm.

[0012] As an alternative implementation, the connection between two adjacent connecting pipes along the length of the main pipeline is transitioned by an arc.

[0013] As an optional implementation, it also includes an adjustment mechanism, to which the blowing assembly is connected. The adjustment mechanism is used to move the blowing assembly closer to or further away from the filter element to adjust the distance between the second end of the blowing pipe and the air outlet of the filter element.

[0014] As an optional implementation, the adjustment mechanism includes a crossbeam, a connecting beam, and two guide rails fixedly mounted on the housing of the vacuum feeder. The crossbeam is located above the main pipeline and is aligned with the extension direction of the main pipeline. The two ends of the crossbeam along its length are slidably connected to the two guide rails respectively. One end of the connecting beam is connected to the crossbeam, and the other end is connected to the main pipeline, so that when the crossbeam slides along the guide rails, the blowing assembly moves closer to or further away from the filter element.

[0015] As an optional implementation, the adjustment mechanism also includes an electric push rod and a motor, which are disposed in the housing of the vacuum feeder. The drive end of the electric push rod is connected to the crossbeam, the electric push rod and the motor are electrically connected, and the motor and the control unit are electrically connected so as to control the extension and retraction of the electric push rod through the control unit, thereby driving the crossbeam to slide along the guide rail.

[0016] As an optional implementation, there are at least two connecting beams, including a first connecting beam and a second connecting beam, which are symmetrically arranged along the length direction of the crossbeam.

[0017] As an alternative implementation, the electric actuator is connected to the middle position of the crossbeam along its own length.

[0018] As an optional implementation, a dust detection sensor is also included. The dust detection sensor is disposed on one side of the blowpipe and is used to detect the dust concentration near the blowpipe. The dust detection sensor is electrically connected to the control unit.

[0019] Secondly, this application also provides a vacuum feeder, including the vacuum feeder pulse jet system of the first aspect.

[0020] The pulse jet cleaning system for a vacuum feeder provided in this application includes a cleaning assembly, a pulse valve, and a control unit. The cleaning assembly includes a main pipeline and multiple cleaning pipes. The main pipeline is horizontally positioned above multiple filter elements of the vacuum feeder. The pulse valve is located at the air inlet of the main pipeline to control the opening or closing of the air inlet, thereby periodically injecting pulse gas into the main pipeline. The main pipeline includes multiple connecting pipes connected in sequence, with the diameter of each connecting pipe decreasing sequentially along the air inlet direction. Each connecting pipe has a corresponding cleaning pipe. The cleaning pipes and filter elements are positioned one-to-one, with the first end of the cleaning pipe connected to the connecting pipe and the second end facing the air outlet of the filter element, so as to inject pulse gas into the corresponding filter element through the cleaning pipe, thereby cleaning the filter bags in the filter element. The diameter of the first end of the cleaning pipe is larger than the diameter of the second end of the cleaning pipe, and the connection between the cleaning pipe and the main pipeline is a rounded transition. The control unit is electrically connected to the pulse valve, and the control unit is used to control the operation of the pulse valve.

[0021] The vacuum feeder pulse jet cleaning system provided in this application effectively improves the gas pressure distribution in the main pipeline by setting up a structure of multiple sequentially connected pipes with diameters decreasing along the air inlet direction of the main pipeline. This avoids the uneven gas pressure distribution caused by pressure loss along the friction path in existing equal-diameter main pipelines, thus enabling more uniform gas distribution to each jet pipe and solving the problem of uneven dust removal effect among different filter elements. Simultaneously, by designing the diameter of the first end of the jet pipe to be larger than that of the second end, and using an arc transition at the connection between the jet pipe and the main pipeline, eddy currents are effectively avoided when the gas flows through the connection point, resulting in smoother gas flow, reduced gas pressure loss, and more concentrated airflow from the jet pipe. This prevents gas leakage to the outside of the filter element, improves gas utilization efficiency, and enhances the jet cleaning effect on the filter element and filter bag. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the vacuum feeder pulse jet system provided in the embodiments of this application;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100-Vacuum feeder pulse jet system;

[0027] 110-Pulse Jet Assembly;

[0028] 111-Main Road;

[0029] 112-Pulse jet pipe;

[0030] 120-Pulse Valve;

[0031] 130 - Adjustment mechanism;

[0032] 131-Crossbeam;

[0033] 132 - Connecting beam;

[0034] 133 - Guide rail;

[0035] 134 - Electric linear actuator;

[0036] 135 - Motor;

[0037] 140 - Dust detection sensor;

[0038] 200 - Outer casing;

[0039] 300-Filter Cartridge;

[0040] 400-Filter Bag. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] In this application, the terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” “outer,” “vertical,” “horizontal,” “lateral,” and “longitudinal” indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0043] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0044] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0045] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0046] The existing pulse jet cleaning system of vacuum feeders has significant shortcomings: Firstly, the dust removal effect on multiple filter cartridges is uneven; while some filter cartridges are effectively cleaned, many others are not thoroughly cleaned. Secondly, due to the unreasonable structural design of the jet pipe, airflow is prone to leaking to the outside of the filter cartridges during the jet cleaning process. This not only wastes the jet gas but also reduces the effective airflow acting on the filter bags, thereby lowering the dust removal effect and efficiency.

[0047] In view of this, this application provides a pulse jet blowing system for a vacuum feeder, including a blowing assembly, a pulse valve, and a control unit. The blowing assembly includes a main pipeline and multiple blowing pipes. The main pipeline is horizontally positioned above multiple filter elements of the vacuum feeder, and the pulse valve is located at the air inlet of the main pipeline. The main pipeline includes multiple connecting pipes connected in sequence, and the diameter of the multiple connecting pipes decreases progressively along the air inlet direction of the main pipeline. Each connecting pipe is equipped with a corresponding blowing pipe. The positions of the blowing pipes and the filter elements correspond one-to-one, and the first end of the blowing pipe is connected to the connecting pipe, while the second end faces the air outlet of the filter element. The diameter of the first end of the blowing pipe is larger than the diameter of the second end of the blowing pipe, and the connection between the blowing pipe and the main pipeline is achieved through an arc transition. By configuring the main pipeline as multiple sequentially connected pipes with diameters decreasing along the air inlet direction, the pressure distribution of gas in the main pipeline can be effectively improved. This avoids the uneven gas pressure distribution caused by friction loss in existing equal-diameter main pipelines, thus allowing gas to be distributed more evenly to each blowpipe and solving the problem of uneven dust removal efficiency among different filter elements. By designing the diameter of the first end of the blowpipe to be larger than that of the second end, and using a rounded transition at the connection between the blowpipe and the main pipeline, eddy currents are effectively avoided when gas flows through the connection point, resulting in smoother gas flow, reduced pressure loss, and more concentrated airflow from the blowpipe. This prevents gas leakage to the outside of the filter element, improves gas utilization efficiency, and enhances the dust removal effect on the filter element and filter bag.

[0048] Figure 1 This is a schematic diagram of the structure of the vacuum feeder pulse jet system provided in the embodiments of this application; Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0049] You can refer to this. Figure 1 and Figure 2This application provides a pulse jet system 100 for a vacuum feeder, including a jet assembly 110, a pulse valve 120, and a control unit. The jet assembly 110 includes a main pipeline 111 and multiple jet pipes 112. The main pipeline 111 is horizontally positioned above multiple filter elements 300 of the vacuum feeder. The pulse valve 120 is located at the air inlet of the main pipeline 111 to control the opening or closing of the air inlet of the main pipeline 111, thereby periodically jetting pulse gas into the main pipeline 111. The main pipeline 111 includes multiple connecting pipes connected in sequence, and the diameter of the multiple connecting pipes decreases sequentially along the air inlet direction of the main pipeline 111. The system is small, with a corresponding blowpipe 112 on each connecting pipe; the blowpipe 112 and the filter element 300 are positioned one-to-one, and the first end of the blowpipe 112 is connected to the connecting pipe, while the second end faces the air outlet of the filter element 300, so that pulse gas is blown into the corresponding filter element 300 through the blowpipe 112, thereby blowing dust off the filter bag 400 in the filter element 300; the diameter of the first end of the blowpipe 112 is larger than the diameter of the second end of the blowpipe 112, and the connection between the blowpipe 112 and the main pipeline 111 is transitioned by an arc; the control unit and the pulse valve 120 are electrically connected, and the control unit is used to control the pulse valve 120 to operate.

[0050] The vacuum feeder pulse jet cleaning system 100 provided in this application embodiment, by configuring the main pipeline 111 as multiple sequentially connected connecting pipes with diameters decreasing along the air inlet direction of the main pipeline 111, can effectively improve the pressure distribution of gas in the main pipeline 111. This avoids the uneven gas pressure distribution caused by pressure loss along the friction path in the equal-diameter main pipeline 111 of the prior art, thereby making the gas more evenly distributed to each jet pipe 112 and solving the problem of uneven dust removal effect of different filter elements 300. At the same time, by designing the diameter of the first end of the jet pipe 112 to be larger than the diameter of the second end, and using an arc transition at the connection between the jet pipe 112 and the main pipeline 111, eddies are effectively avoided when the gas flows through the connection part, making the gas flow smoother, effectively reducing gas pressure loss, and making the airflow ejected from the jet pipe 112 more concentrated, preventing gas leakage to the outside of the filter element 300, improving gas utilization efficiency, and thus enhancing the jet cleaning effect on the filter element 300 and filter bag 400.

[0051] In the above embodiment, the distance between the second end of the blowpipe 112 and the air outlet of the filter element 300 can be 30mm-50mm. By setting the distance between the second end of the blowpipe 112 and the air outlet of the filter element 300 in the range of 30mm-50mm, the blown airflow can act fully and evenly on the filter element 300. When the distance is too small, the blown airflow, after being ejected from the blowpipe 112, is difficult to fully cover all parts of the filter bag 400 inside the filter element 300 due to the influence of the divergence angle, resulting in some dust on the surface of the filter bag 400 not being effectively blown away, reducing the overall dust removal efficiency. If the distance is too large, the blown airflow is difficult to concentrate and spray into the filter element 300, resulting in some airflow leaking from the periphery of the filter element 300, wasting airflow resources, and making the airflow reaching the surface of the filter bag 400 insufficient, failing to achieve efficient dust removal function, which will also have an adverse effect on the dust removal performance of the pulse jet system.

[0052] In the above embodiment, the connection between two adjacent connecting pipes along the length of the main pipeline 111 can be transitioned by an arc. It can be understood that by using an arc transition at the connection between two adjacent connecting pipes along the length of the main pipeline 111, the frictional resistance during gas flow can be effectively reduced. Specifically, the arc structure allows the airflow to change direction naturally and smoothly when passing through the connection, resulting in more orderly collisions between gas molecules, reducing energy loss due to friction, and thus reducing the overall system energy consumption. Secondly, this arc transition avoids unnecessary airflow disturbance. When the airflow passes smoothly through the connection, small vortices are not formed, ensuring a laminar flow state and making the gas flow in the main pipeline 111 more regular. This helps to precisely control the gas flow rate and pressure, making the airflow speed and force ejected from the subsequent blowpipe 112 more precise, thereby achieving a more uniform and efficient dust removal effect on the filter element 300. Furthermore, the arc transition reduces the scouring and wear of the connection by the gas. During long-term use, non-arc connection parts such as right angles are more susceptible to impact from high-speed airflow, leading to increased local wear and shortening the service life of the pipeline. The rounded transition design allows airflow to be evenly distributed at the connection, reducing wear and tear, extending the service life of the main pipeline 111 and the entire system, and reducing maintenance costs.

[0053] In the above embodiments, an adjustment mechanism 130 may also be included, with the blowing assembly 110 connected to the adjustment mechanism 130. The adjustment mechanism 130 is used to move the blowing assembly 110 closer to or further away from the filter element 300 to adjust the distance between the second end of the blowing pipe 112 and the air outlet of the filter element 300. Adding the adjustment mechanism 130, and connecting the blowing assembly 110 to it, provides several significant technical advantages. First, during operation, the adjustment mechanism 130 can precisely control the blowing operation according to actual working conditions. Due to different production environments and the usage time of the filter element 300, the requirements for the blowing effect will also change. The adjustment mechanism 130 can flexibly move the blowing assembly 110 closer to or further away from the filter element 300, thereby precisely adjusting the distance between the second end of the blowing pipe 112 and the air outlet of the filter element 300, ensuring that the blowing effect is always at its best. Second, from an equipment maintenance perspective, the adjustment mechanism 130 provides convenience for the inspection and maintenance of the blowing assembly 110. When the blowing assembly 110 needs maintenance or parts replacement, it can be easily moved via the adjustment mechanism 130, allowing maintenance personnel to more conveniently access the relevant components, reducing maintenance difficulty, and saving maintenance time and costs. Thirdly, the adjustment mechanism 130 enhances the versatility and compatibility of the entire system. When dealing with different models and specifications of filter elements 300, simply adjusting the blowing distance via the adjustment mechanism 130 allows the blowing system to be adapted to different filter elements 300 without requiring large-scale modifications to the entire system, thus enhancing the equipment's application range and practicality.

[0054] In the above embodiments, the adjustment mechanism 130 may include a crossbeam 131, a connecting beam 132, and two guide rails 133 fixedly installed on the housing 200 of the vacuum feeder. The crossbeam 131 is located above the main pipeline 111 and is aligned with the extension direction of the main pipeline 111. The two ends of the crossbeam 131 along its own length direction are slidably connected to the two guide rails 133 respectively. One end of the connecting beam 132 is connected to the crossbeam 131, and the other end is connected to the main pipeline 111, so that when the crossbeam 131 slides along the guide rail 133, the blowing assembly 110 moves closer to or further away from the filter element 300. Two guide rails 133 are fixed to the outer shell 200 and slidably connected to both ends of the crossbeam 131, forming a stable guide support structure. This ensures that the crossbeam 131 maintains a movement trajectory consistent with the extension direction of the main pipeline 111 when sliding along the guide rails 133, avoiding positional deviation of the blowing assembly 110 caused by the offset or shaking of the crossbeam 131. This, in turn, ensures the accuracy of the distance adjustment between the second end of the blowing pipe 112 and the air outlet of the filter element 300, preventing problems such as over-adjustment or under-adjustment due to unstable sliding. The connecting beam 132 serves as the connecting medium between the crossbeam 131 and the main pipeline 111. It directly converts the sliding displacement of the crossbeam 131 into the synchronous displacement of the main pipeline 111 (and the blowpipe 112 connected to the main pipeline 111): when the crossbeam 131 slides along the guide rail 133 towards the filter element 300, the connecting beam 132 drives the main pipeline 111 and the blowpipe 112 to synchronously approach the filter element 300, shortening the distance between the second end of the blowpipe 112 and the air outlet; when the crossbeam 131 slides along the guide rail 133 away from the filter element 300, the connecting beam 132 drives the blowpipe assembly 110 to synchronously move away, increasing the distance between them. This rigid linkage structure avoids idle rotation or lag during adjustment, ensuring timely distance adjustment response and synchronous displacement, further improving adjustment efficiency.

[0055] Furthermore, the layout of the crossbeam 131, located above the main pipeline 111 and aligned with its extension direction, not only avoids interfering with the normal airflow within the main pipeline 111 but also provides operators with a clear adjustment space. Operators can adjust the distance by sliding the crossbeam 131 along the guide rail 133 (e.g., manually pushing or using a drive component), without disassembling other system components. Simultaneously, the linear guiding characteristics of the guide rail 133 allow for stepless fine-tuning of the distance adjustment based on actual needs (e.g., filter element 300 status, material characteristics), rather than fixed-level adjustment. This allows for more flexible adaptation to the precise requirements of the blowing distance under different working conditions, further ensuring the stability of the dust removal effect.

[0056] In the above embodiments, the adjustment mechanism 130 may further include an electric push rod 134 and a motor 135. The electric push rod 134 and the motor 135 are disposed in the housing 200 of the vacuum feeder. The drive end of the electric push rod 134 is connected to the crossbeam 131. The electric push rod 134 and the motor 135 are electrically connected, and the motor 135 is electrically connected to the control unit. The control unit controls the extension and retraction of the electric push rod 134, thereby driving the crossbeam 131 to slide along the guide rail 133. It can be understood that the control unit can automatically control the motor 135 to drive the electric push rod 134 to extend and retract precisely based on real-time operating data such as the pressure difference of the filter element 300 and the dust removal cycle. The extension and retraction stroke of the electric push rod 134 can be quantified and preset, which can control the displacement error of the sliding of the crossbeam 131 to the millimeter level, ensuring that the distance between the blow pipe 112 and the air blowing port of the filter element 300 is accurately within the target value of 30mm-50mm, avoiding the experience error of manual adjustment and improving the consistency of adjustment. When dust accumulation changes or material characteristics switch in filter element 300, the control unit can instantly trigger adjustment actions, allowing the jet cleaning assembly 110 to be moved closer or further away without manual intervention. This avoids the lag of manual adjustment, ensures that the jet cleaning effect matches the real-time operating conditions, and optimizes dust removal efficiency. Furthermore, the adjustment actions are remotely controlled by the control unit, eliminating the need for operators to touch moving parts and mitigating safety risks. The electric push rod 134 and guide rail 133 work together to prevent jamming and misalignment, and the motor 135, linked to the control unit, has overload protection to prevent component damage, extend equipment life, and ensure stable operation of the jet cleaning system.

[0057] In the above embodiments, there may be at least two connecting beams 132, including a first connecting beam 132 and a second connecting beam 132. The first connecting beam 132 and the second connecting beam 132 are symmetrically arranged along the length direction of the crossbeam 131. The symmetrically distributed connecting beams 132 can evenly transmit the driving force of the crossbeam 131 to both ends of the main pipeline 111, avoiding bending and deformation of the main pipeline 111 due to unilateral force, ensuring the structural integrity of the main pipeline 111 for long-term use, and preventing the positional displacement of the blow-jet assembly 110 caused by uneven force. During adjustment, the symmetrical connecting beams 132 can drive the main pipeline 111 to slide synchronously along the length direction of the crossbeam 131, avoiding the problem of one end of the main pipeline 111 moving first and the other end lagging behind, ensuring that the distance between the second end of the blow-jet pipe 112 and the air outlet of the filter element 300 remains consistent during the adjustment process, and preventing local distance deviations from affecting the dust removal effect. In addition, the symmetrical structure can offset the impact of airflow impact or equipment vibration on the connection parts, reduce the shaking of the crossbeam 131 and the main pipeline 111 during the adjustment process, further improve the accuracy of the jetting distance adjustment, and provide structural support for stable dust removal.

[0058] In the above embodiment, the electric push rod 134 can be connected to the middle position of the crossbeam 131 along its own length direction, achieving absolute force balance on the crossbeam 131. The electric push rod 134 applies driving force from the midpoint of the crossbeam 131, which can evenly distribute the thrust to both ends of the crossbeam 131. Combined with the balanced force transmission of the symmetrical connecting beam 132 to the main pipeline 111, it further avoids the problem of the crossbeam 131 tilting due to force imbalance, such as excessive force on one end and insufficient force on the other end, ensuring the horizontal stability of the crossbeam 131 when sliding along the guide rail 133. Secondly, the midpoint drive can make the sliding speed of the two ends of the crossbeam 131 consistent. Combined with the synchronous driving of the main pipeline 111 by the symmetrical connecting beam 132, it can ensure that the main pipeline 111 and the spray assembly 110 are displaced in a straight line without twisting or tilting, further ensuring the consistency of the distance adjustment between the spray pipe 112 and the air outlet of the filter element 300, and avoiding local distance deviation.

[0059] In the above embodiments, a dust detection sensor 140 may also be included. The dust detection sensor 140 is disposed on one side of the blowpipe 112 and is used to detect the dust concentration near the blowpipe 112. The dust detection sensor 140 is electrically connected to the control unit. It can be understood that the sensor can accurately capture changes in dust concentration near the blowpipe 112 and provide real-time feedback on the dust removal effect of the filter bag 400. If the detected dust concentration is still too high, it indicates that the current blowing distance or force is insufficient; if the concentration is too low, it can be determined that the current dust removal status has met the standard, providing data basis for subsequent adjustments. After receiving the sensor data, the control unit can automatically trigger the adjustment logic: when the dust concentration exceeds the standard, the control motor 135 drives the electric push rod 134 to adjust the blowpipe assembly 110 to a better distance (such as shortening the distance to increase the impact force); when the concentration meets the standard, the control adjustment mechanism 130 maintains the current distance or fine-tunes it to the energy-saving level, without the need for manual judgment, realizing a closed-loop intelligent operation from detection and control to dust removal. In addition, real-time feedback from sensors can prevent blind cleaning (such as incomplete or excessive cleaning due to improper distance), ensuring that the pulse-jet system always operates under optimal conditions. This guarantees the 400mm cleaning effect of the filter bags while reducing unnecessary airflow waste and equipment wear, achieving a precise balance between efficiency and energy consumption.

[0060] Furthermore, this application embodiment also provides a vacuum feeder, including the vacuum feeder pulse jet system 100 of the above embodiment. The vacuum feeder pulse jet system 100 includes a jet assembly 110, a pulse valve 120, and a control unit. The jet assembly 110 includes a main pipeline 111 and multiple jet pipes 112. The main pipeline 111 is horizontally positioned above multiple filter elements 300 of the vacuum feeder. The pulse valve 120 is located at the air inlet of the main pipeline 111. The main pipeline 111 includes multiple... A series of interconnected connecting pipes, with their diameters decreasing sequentially along the air inlet direction of the main pipeline 111, are used. Each connecting pipe has a corresponding blowpipe 112. The blowpipe 112 and the filter element 300 are positioned one-to-one, with the first end of the blowpipe 112 connected to the connecting pipe and the second end facing the air outlet of the filter element 300. The diameter of the first end of the blowpipe 112 is larger than the diameter of the second end, and the connection between the blowpipe 112 and the main pipeline 111 is achieved through a rounded transition. By configuring the main pipeline 111 as a structure of multiple interconnected connecting pipes with their diameters decreasing sequentially along the air inlet direction, the pressure distribution of gas in the main pipeline 111 can be effectively improved. This avoids the uneven gas pressure distribution caused by pressure loss along the friction path in the existing constant-diameter main pipeline 111, thus allowing the gas to be distributed more evenly to each blowpipe 112. By designing the diameter of the first end of the blowpipe 112 to be larger than that of the second end, and by using an arc transition at the connection between the blowpipe 112 and the main pipeline 111, eddies are effectively avoided when the gas flows through the connection, making the gas flow smoother, effectively reducing gas pressure loss, and making the airflow ejected from the blowpipe 112 more concentrated, preventing gas from leaking to the outside of the filter element 300, improving the gas utilization efficiency, and thus enhancing the dust removal effect of the blowpipe on the filter element 300 and filter bag 400, thereby improving the feeding efficiency of the vacuum feeder.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A pulse jet blowing system for a vacuum feeder, characterized in that, The device includes a jetting assembly, a pulse valve, and a control unit. The jetting assembly includes a main pipeline and multiple jetting pipes. The main pipeline is horizontally positioned above multiple filter elements of the vacuum feeder. The pulse valve is located at the air inlet of the main pipeline to control the opening or closing of the air inlet of the main pipeline, thereby periodically jetting pulse gas into the main pipeline. The main pipeline includes multiple connecting pipes connected in sequence. The diameter of the multiple connecting pipes decreases successively along the air intake direction of the main pipeline. Each connecting pipe is equipped with a corresponding blow pipe. The positions of the blowpipe and the filter element are one-to-one, and the first end of the blowpipe is connected to the connecting pipe, and the second end is facing the air blowing port of the filter element, so as to blow pulse gas into the corresponding filter element through the blowpipe, thereby blowing dust off the filter bag in the filter element. The diameter of the first end of the blowpipe is larger than the diameter of the second end of the blowpipe, and the connection between the blowpipe and the main pipeline is a rounded transition. The control unit is electrically connected to the pulse valve, and the control unit is used to control the pulse valve to perform its operation.

2. The vacuum feeder pulse jet system according to claim 1, characterized in that, The distance between the second end of the blowpipe and the air outlet of the filter element is 30mm-50mm.

3. The vacuum feeder pulse jet system according to claim 1, characterized in that, The connection between two adjacent connecting pipes along the length of the main pipeline is transitioned by an arc.

4. The vacuum feeder pulse jet system according to any one of claims 1-3, characterized in that, It also includes an adjustment mechanism, to which the blowing assembly is connected. The adjustment mechanism is used to move the blowing assembly closer to or further away from the filter element to adjust the distance between the second end of the blowing pipe and the air outlet of the filter element.

5. The vacuum feeder pulse jet system according to claim 4, characterized in that, The adjustment mechanism includes a crossbeam, a connecting beam, and two guide rails fixedly mounted on the housing of the vacuum feeder. The crossbeam is located above the main pipeline and extends in the same direction as the main pipeline. Both ends of the crossbeam are slidably connected to the two guide rails along its length. One end of the connecting beam is connected to the crossbeam, and the other end is connected to the main pipeline, so that when the crossbeam slides along the guide rails, the blowing assembly moves closer to or further away from the filter element.

6. The vacuum feeder pulse jet system according to claim 5, characterized in that, The adjustment mechanism also includes an electric push rod and a motor. The electric push rod and the motor are disposed in the housing of the vacuum feeder. The drive end of the electric push rod is connected to the crossbeam. The electric push rod and the motor are electrically connected. The motor and the control unit are electrically connected so that the extension and retraction of the electric push rod can be controlled by the control unit, thereby driving the crossbeam to slide along the guide rail.

7. The vacuum feeder pulse jet system according to claim 5, characterized in that, The connecting beams are at least two in number, including a first connecting beam and a second connecting beam, which are symmetrically arranged along the length of the crossbeam.

8. The vacuum feeder pulse jet system according to claim 6, characterized in that, The electric actuator is connected to the middle position of the crossbeam along its own length.

9. The vacuum feeder pulse jet system according to any one of claims 1-3, characterized in that, It also includes a dust detection sensor, which is disposed on one side of the blowpipe and is used to detect the dust concentration near the blowpipe. The dust detection sensor is electrically connected to the control unit.

10. A vacuum feeder, characterized in that, Includes the vacuum feeder pulse jet system as described in any one of claims 1-9.

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