Dust suppression powder tank and device for concrete mixing plant

Abstract

The invention belongs to the technical field of powder tanks, and particularly relates to a dust suppression powder tank and device for a concrete mixing plant, and the dust suppression powder tank for the concrete mixing plant comprises a dust collection cylinder, a filter bag, an air purification chamber and a filter plate assembly. A communicating end is arranged on the side wall of the dust collecting cylinder, and a valve channel part is arranged at the bottom. And the filter bag is arranged along the vertical direction and is suspended in the dust collection cavity of the dust collection cylinder. The air purification chamber is fixed at the top of the dust collection cylinder. The upper ends of the filter bags are fixedly connected with the top wall of the dust collection cylinder, and the upper ports of the filter bags are communicated with the air purification chamber. And the lower end of the filter bag is a closed end. The filter plate assembly is fixedly arranged in the air purification chamber and can divide the air purification chamber into independent chambers, and fans are arranged on the upper portions of the independent chambers. The filter plate assembly comprises a plurality of filter cloth pieces; and the filter cloth pieces are arranged on each side wall surface communicated between the independent cavity and the air purification chamber. The problem that when concrete is fed into the powder bin, a large amount of raised dust is released to the outside, and dust pollution is caused is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of material collecting powder tanks, and in particular relates to a dust suppression powder tank and a device for a concrete mixing station. Background Art

[0002] The powder silo of existing concrete mixing plants generally has the problem of poor dust removal effect. Specifically, when the concrete powder is being transported to the powder silo, a large amount of dust will be raised in the powder silo due to air pressure, and the dust will be released to the outside through the filter cloth unit on the top of the powder silo. Because the pressure in the powder silo is controlled to be maintained within a reasonable range, the filter cloth installed on the top is required to have a relatively large gap, so the dust suppression effect that can be achieved only by the filter cloth unit installed on the top of the powder silo is limited. Therefore, in existing concrete mixing plants, the dust-containing air in the powder silo will inevitably overflow from the powder silo to the outside and enter the external environment, causing environmental pollution problems caused by excessive dust. Summary of the invention

[0003] The present invention provides a dust suppression powder tank and device for a concrete mixing station. The dust suppression powder tank is provided with associated structures such as a dust collecting cylinder, a filter bag, a clean air chamber, and a filter plate assembly, which solves the problem that a large amount of dust raised when concrete is fed into a powder silo will be released to the outside and cause dust pollution. In addition, the use of the configured dust suppression powder tank also facilitates the recycling of concrete deposited in the dust collecting cylinder, thereby improving the utilization rate of the concrete.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a dust suppression powder tank for a concrete mixing station, comprising a dust collecting cylinder, a plurality of filter bags, a clean air chamber and at least one filter plate assembly.

[0005] The side wall of the dust collecting barrel is provided with a connecting end that can be connected to the powder bin in the concrete mixing station, and the bottom is provided with a valve channel portion. The connecting end can connect the dust collecting chamber of the dust collecting barrel with the powder bin, forming an inlet end for dust to enter the dust collecting chamber. The valve channel portion can selectively connect the lower part of the dust collecting chamber with external equipment, such as connecting with the middle and upper part of the powder bin, so as to facilitate the purpose of recovering and transporting the concrete deposited in the dust collecting chamber to the powder bin.

[0006] The filter bag is columnar. A plurality of filter bags are arranged in a vertical direction and suspended in the dust collecting chamber of the dust collecting cylinder. A clean air chamber is fixed on the top of the dust collecting cylinder. The upper end of the filter bag is fixedly connected to the top wall of the dust collecting cylinder, and the upper ports of the filter bags are connected to the clean air chamber. The lower ends of the filter bags are all closed ends.

[0007] The filter plate assembly is arranged in the clean air chamber. If a plurality of filter plate assemblies are arranged in the clean air chamber, each filter plate assembly can divide an independent chamber in the clean air chamber, and fans are arranged correspondingly at the upper parts of the plurality of independent chambers. After the fans are started, the air in the clean air chamber can be drawn through each independent chamber and then discharged to the outside. The fans are preferably duct fans. When the three-dimensional space of the clean air chamber is large, a plurality of fans can be arranged.

[0008] The filter plate assembly contains a plurality of filter cloth pieces. The filter cloth pieces are arranged on the side walls connected between the independent chamber and the clean air chamber. The independent chamber is connected with the clean air chamber, which means that the independent chamber is connected with the clean air chamber through the gaps of the filter cloth on the filter cloth piece, rather than an open connection without shielding.

[0009] Optionally, the filter plate assembly includes two filter plate units, and each of the filter plate units includes a frame. The filter cloth is arranged inside the frame. The two frames are arranged to be tilted relative to each other, and the upper ends of the two frames are relatively far away and respectively fixedly connected to the inner top wall of the clean air chamber, and the lower ends are relatively close and fixedly connected together. The front end and the rear end of the independent chamber are both closed ends, and the front side wall plate and the rear side wall plate of the clean air chamber can be used to block the front end and the rear end of the independent chamber respectively.

[0010] By making the two frames of the two filter plate units tilted relative to each other, with the upper ends relatively far apart and the lower ends relatively close together, the top projection area of ​​the frame or the filter wall body constructed by the frame and the filter cloth member can be increased, and the concrete dropped from the filter cloth member can be easily dispersed and dropped over a larger area, which is not easy to accumulate quickly to a high height.

[0011] Optionally, a support seat is fixedly provided in the clean air chamber, and a groove is formed at the lower part of the support seat. Two rows of support columns are arranged on the upper end surface of the groove, and each row contains a plurality of support columns arranged alternately in the front and rear directions. The support columns extend upward in the vertical direction. The upper ends of the two frames are formed with edge plates extending horizontally. The two rows of support columns are respectively matched with the edge plates at the upper ends of the two frames, and the edge plates at the upper ends of the two frames can be pressed against the inner top surface of the clean air chamber. The lower ends of the two frames extend into the groove of the support seat.

[0012] Optionally, a vibrator is provided at the bottom of the groove of the support seat. The vibrator is connected to the lower ends of the two frames, and can vibrate the two frames to cause the dust attached to the filter plate unit to fall off the filter cloth, which helps the air permeability of the filter cloth to remain in good condition for a long time.

[0013] Optionally, the filter plate unit further includes a pair of tie rods. The two tie rods are arranged in an X-shaped cross pattern and are respectively fixed at two diagonally opposite positions on the frame. A disc-shaped member is fixed at the intersection of the two tie rods, so that the notch of the disc-shaped member faces the filter cloth surface of the filter cloth member, and a distance is formed between the port of the disc-shaped member and the filter cloth surface of the filter cloth member. Wave-shaped elastic deformation sections are formed on both end sides of the tie rod, so that the tie rod can fluctuate / jump in a direction perpendicular to the filter cloth member. In addition, each filter plate unit is correspondingly configured with at least one detection component.

[0014] The detection component can detect the frequency and amplitude of the pull rod's vibration and transmit the detection situation to the controller. The controller can analyze and judge the air permeability and filtering state / capacity of the filter cloth according to the fluctuation frequency and / or amplitude of the pull rod.

[0015] Optionally, the detection assembly includes a detector body, two frames and a crossbar. Both ends of the crossbar are fixed to the frame. The middle of the crossbar is raised in a direction away from the filter cloth, and the detector body is fixed to the raised part of the crossbar. The two frames are fixed on the crossbar and located on both sides of the detector body.

[0016] The frame includes an L-shaped connecting arm portion and a U-shaped claw portion. The upper end of the vertical plate of the connecting arm portion is fixedly connected to the cross bar, and the flat plate of the connecting arm portion is fixedly connected to the claw portion. An elastic deformation portion is formed at the bend of the connecting arm portion. The two frames can be a split structure or an integral structure. The sensitive portion connected to the detector body is fixedly arranged on the elastic deformation portion. The two claw portions are fixedly matched with the two pull rods respectively, and can cause the elastic deformation portion to produce elastic deformation along with the fluctuation action of the pull rod, so as to cause the physical quantity of the sensitive portion to change. As the physical quantity of the sensitive portion changes, the detector body can generate a real-time sensor signal. After the sensor signal generated by the detector body is transmitted to the controller, the controller can process the sensor signal to obtain a vibration signal that can reflect the beating of the pull rod, such as a frequency signal and / or an amplitude signal. The controller can judge the air permeability and filtration state / performance of the filter cloth according to the vibration signal.

[0017] The main body of the crossbar is preferably a cylindrical rod, and the crossbar has good rigidity and is not easily affected by air flow and swung. The detector body can be a strain sensor, and the sensitive part corresponds to the strain gauge part.

[0018] Optionally, an end ring and a support frame are provided at the upper end of the filter bag. The end ring can prop open the upper port of the filter bag, and the filter bag is fixedly connected to the top wall of the dust collecting cylinder through the end ring. The support frame is correspondingly arranged above the end ring and located in the clean air chamber.

[0019] The support frame comprises a plurality of support rods fixedly connected to the end rings and a top plate fixedly arranged on the upper ends of the support rods.

[0020] Each filter bag is equipped with a dust cleaning assembly. The upper part of the dust cleaning assembly is fixedly connected to the support frame, the lower part is fixedly connected to the bottom of the filter bag, and the middle part is associated with a power unit, which can drive the filter bag to produce elastic deformation in the vertical direction.

[0021] Optionally, the dust cleaning assembly includes a connecting rod, a sleeve, a spring, a suspension rod, an electromagnet part and a permanent magnet part, wherein the spring, the electromagnet part and the permanent magnet part can be regarded as the power part.

[0022] The connecting rod is arranged in the filter bag along the vertical direction, with a column block formed on the upper part and a disc-shaped part fixedly connected to the bottom of the filter bag formed on the lower end. The column block is placed in the barrel cavity of the sleeve, and the column block can be lifted and moved relative to the sleeve in the vertical direction.

[0023] The barrel cavity of the sleeve is arranged to extend in the vertical direction. The upper end of the sleeve is formed with a threaded countersunk hole that can be fixedly connected with the lower end of the suspension rod through a threaded structure, and the bottom wall is formed with a through hole for the connecting rod to pass through, and a sealing ring is fixedly provided on the side wall of the through hole, and the sealing ring can contact the outer peripheral surface of the connecting rod.

[0024] The spring is sleeved on the connecting rod, and the two ends of the spring are respectively in contact with the inner bottom surface of the sleeve and the lower end surface of the column block.

[0025] The upper end of the suspension rod is fixedly connected to the top plate of the support frame, and the entire dust cleaning assembly is suspended in a vertical direction.

[0026] The electromagnet part is fixed on the lower end of the suspension rod and extends into the barrel cavity of the sleeve.

[0027] The permanent magnet part is fixed to the upper end of the column block part and corresponds to the lower side of the electromagnet part.

[0028] In the initial state, the spring is in a compressed state and can push the column block portion upward, so that the permanent magnet portion is close to the electromagnet portion.

[0029] When the electromagnet part is energized, it can exert a downward thrust on the permanent magnet part or the column block part, thereby causing the column block part to move downward relative to the sleeve, thereby stretching the bag body of the filter bag.

[0030] When the electromagnet part is switched to the power-on state, the magnetic pole of the electromagnet part facing one end of the permanent magnet part is the same as the magnetic pole of the permanent magnet part facing one end of the electromagnet part, so that a repulsive magnetic force can be formed between the electromagnet part and the permanent magnet part, and the permanent magnet part can be driven to move in a direction away from the electromagnet part, so that the spring is further compressed. After the electromagnet part returns to the initial state, the force acting on the permanent magnet part disappears, and the spring can push the column block part upward to move, so that the permanent magnet part is close to the electromagnet part.

[0031] Optionally, an elastic ring is fixedly provided at the upper end of the permanent magnet part. The spring can push the column block part upward to move relative to the sleeve, and can make the upper end of the elastic ring contact with the lower end surface of the electromagnet part, so as to establish an elastic buffer distance between the opposite surfaces of the electromagnet part and the permanent magnet part, and can significantly reduce the impact strength between the opposite surfaces of the two.

[0032] The present invention also relates to a dust suppression device for a concrete mixing station, comprising a powder silo, and a filter cloth unit is provided on the top of the powder silo. A top cover capable of covering the filter cloth unit is provided on the upper part of the powder silo. The above-mentioned dust suppression powder tank for a concrete mixing station is also included. The cover cavity of the top cover is connected to the connecting end of the dust collecting cylinder by a pipeline, so that the dust diffused into the cover cavity of the top cover by the filter cloth unit can be introduced into the dust collecting cavity of the dust collecting cylinder through the connecting end.

[0033] The beneficial effects of the present invention are as follows: the present invention solves the problem that a large amount of dust raised during the process of concrete being fed into a powder silo will be released to the outside and cause dust pollution by arranging related structures such as a dust collecting barrel, a filter bag, a clean air chamber and a filter plate assembly; in addition, it is also convenient to realize the recycling of concrete deposited in the dust collecting barrel, thereby improving the utilization rate of the concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the cross-sectional structure of the dust collecting cylinder in the present invention.

[0035] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0036] Figure 3 It is a schematic diagram of the top view of the structure of the filter plate assembly and the detection assembly cooperating with each other.

[0037] Figure 4 It is a schematic diagram of the side structure of the detection component configured on the filter plate assembly.

[0038] In the figure: 10 dust collecting cylinder, 11 connecting end, 12 valve channel part, 13 dust collecting chamber; 20 filter bag, 21 end ring, 22 support frame, 221 support rod; 30 clean air chamber; 40 filter plate assembly, 41 frame, 42 filter cloth member, 43 pull rod, 44 disc member; 50 support seat, 51 support column; 60 vibrator; 70 duct fan; 80 dust cleaning assembly, 81 connecting rod, 811 column block part, 812 disc part, 82 sleeve, 83 spring, 84 suspension rod, 841 screw part, 85 electromagnet part, 86 permanent magnet part, 861 elastic ring; 90 detection assembly, 91 detector body, 911 sensitive part, 92 frame, 921 connecting arm part, 922 claw part, 923 elastic deformation part, 93 cross bar. DETAILED DESCRIPTION

[0039] The structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention. At the same time, the terms such as "upper", "lower", "front", "back", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical contents.

[0040] like Figure 1 to Figure 2 The dust suppression powder tank for a concrete mixing station shown in the figure comprises a dust collecting cylinder 10 , a plurality of filter bags 20 , a clean air chamber 30 and at least one filter plate assembly 40 .

[0041] A connecting end 11 that can be connected to a powder bin (in a concrete mixing plant) is provided on the side wall of the dust collecting barrel 10. The upper dust discharge port of the powder bin is connected to the connecting end 11 provided on the dust collecting barrel 10 by a pipeline, so that the dust overflowing from the powder bin can be introduced into the dust collecting chamber 13 of the dust collecting barrel 10. The lower part of the dust collecting chamber 13 is a conical chamber, and the valve channel portion 12 is arranged at the lower end of the conical chamber of the dust collecting chamber 13. A top cover can be provided above the filter cloth at the top of the powder bin, and a dust overflow port can be provided on the top cover. The dust overflow port on the top cover is connected to the connecting end 11 by a pipeline, so that the powder bin and the dust collecting barrel 10 can be connected, and a passage for the air carrying dust to circulate is established between the two.

[0042] A valve channel portion 12 is provided on the bottom wall of the dust collecting barrel 10. The valve channel portion 12 is composed of at least a pipe and a valve (such as a pipe valve), and the valve is provided on the pipe to control the on-off state of the pipe. The pipe valve configured on the valve channel portion 12 is preferably an electromagnetic pipe valve, so that the on-off state of the valve channel portion 12 can be automatically controlled. When the dust / concrete deposited in the dust collecting barrel 10 reaches a certain amount or the valve channel portion 12 remains in a blocked state for a certain period of time, the valve channel portion 12 is controlled to switch to a conducting state, so that the concrete deposited in the dust collecting barrel 10 can be discharged to the outside.

[0043] The lower port of the valve channel portion 12 can be connected to the upper middle position of the chamber of the powder bin by a pipeline, so as to realize the timely recovery of concrete. The pipeline connecting the lower port of the valve channel portion 12 and the upper chamber of the powder bin is arranged at an angle, so that the recovered concrete can slide into the powder bin by its own gravity.

[0044] The filter bags 20 are all cylindrical, and a plurality of filter bags 20 are arranged in a vertical direction and can remain suspended in the dust collecting chamber 13 of the dust collecting barrel 10. The plurality of filter bags 20 can be arranged in multiple rows and columns in the dust collecting chamber 13. The clean air chamber 30 is fixed on the top of the dust collecting barrel 10. Specifically, the clean air chamber 30 is fixed on the upper end surface of the top wall of the dust collecting barrel 10, and the lower part of the clean air chamber 30 is blocked by means of the top wall. The upper end of the filter bag 20 is fixedly connected to the top wall of the dust collecting barrel 10, and the upper ports of the filter bag 20 can be connected to the clean air chamber 30. The lower ends of the filter bags 20 are all closed ends. In order to keep the filter bag 20 stably in the cylindrical shape, support rings can be distributed in the filter bag 20. The inner wall of the filter bag 20 can be expanded in the radial direction by means of the support rings, so that the filter bag 20 can be stably maintained in the cylindrical cavity state to form a larger flow channel cross-section.

[0045] The filter plate assembly 40 is arranged in the clean air chamber 30. Each of the filter plate assemblies 40 can be divided into corresponding independent chambers in the clean air chamber 30, and a duct fan 70 is arranged on the upper part of the independent chamber. Generally, the filter plate assembly 40 is arranged at the center of the chamber of the clean air chamber 30, so that the upper ports of the plurality of filter bags 20 distributed on the periphery of the center position can establish a communication relationship with the plurality of independent chambers divided by the filter plate assembly 40 through the clean air chamber 30, so that the ventilation volume of each filter bag 20 is basically the same.

[0046] The filter plate assembly 40 includes a plurality of filter cloth members 42, and the filter cloth members 42 are distributed on each side of the independent chamber communicating with the clean air chamber 30. Figure 1 As shown, the filter cloth assembly 40 includes two filter plate units, and the two filter plate units are arranged to be tilted relative to each other. Each filter plate unit includes a frame 41 and the filter cloth member 42 supported and arranged inside the frame 41, so that the filter plate unit is formed into a filter wall body. Figure 1 The filter cloth members 42 of the solution shown are distributed on the left and right sides of the independent chambers communicating with the clean air chamber 30. The upper ends of the two frames 41 are relatively far apart and fixedly connected to the inner top wall of the clean air chamber 30, respectively, while the lower ends are relatively close and fixedly connected together through the edge plate, so that the independent chambers formed by division are trapezoidal. If the lower ends of the frames 41 are directly fixedly connected, the independent chambers formed by division are triangular. Figure 1 In the illustrated solution, the front and rear ends of the independent chambers are blocked and cannot establish a communication relationship with the clean air chamber 30. Figure 1 The independent chamber formed in the scheme shown is a cavity extending in the front-to-back direction. On this basis, generally in every two rows of filter bags 20 (such as Figure 2 As shown in the figure, a filter plate assembly 40 and a pipeline fan 70 are arranged between them. Therefore, if four rows of filter bags 20 are arranged alternately in the left and right directions, two groups of filter plate assemblies 40 and pipeline fans 70 can be arranged.

[0047] By starting the duct fan 70 to draw the air in the independent chamber to the outside, an airflow flowing toward the independent chamber can be generated between the clean air chamber 30, the cylindrical cavity of the filter bag 20, and the dust collecting chamber 13, and a negative pressure can be formed in the dust collecting chamber 13 to promote the dust in the powder bin to flow toward the dust collecting chamber 13. When the dust enters the dust collecting chamber 13, it will be blocked by the filter bag 20. Part of the dust will adhere to the outer wall surface of the filter bag 20, and part of the dust will fall downward into the conical cavity of the dust collecting chamber 13. The air flow containing less dust that enters the filter bag 20, after passing through the bag wall of the filter bag 20 and flowing into the cylindrical cavity of the filter bag 20, flows upward to the clean air chamber 30, and after passing through the filter cloth member 42 (or filter cloth layer) on the filter plate assembly 40, it is drawn to the outside, see. Figure 1 Arrows shown indicate flow direction.

[0048] In the present invention, the dust-containing air drawn from the powder silo into the dust collecting chamber 13 will be filtered by the filter bag 20 and the filter plate assembly 40 in turn, which can ensure the cleanliness of the air finally discharged to the outside, and can effectively suppress the problem of dust pollution. Therefore, the present invention solves the dust pollution problem caused by the large amount of dust raised during the process of concrete being sent into the powder silo and released to the outside; in addition, with the help of the scheme of the present invention, it is also convenient to realize the recycling of concrete deposited in the dust collecting chamber 13, which can improve the utilization rate of concrete.

[0049] A support seat 50 is fixedly provided in the clean air chamber 30. A groove is formed at the lower part of the support seat 50. On the upper end surface of the port of the groove, two rows of support columns 51 are relatively distributed on the left and right sides, and each row contains a plurality of support columns 51 distributed alternately in the front and back. The support columns 51 extend upward in the vertical direction. The upper ends of the two frames 41 are formed with edge plates extending horizontally to the left or right. The left and right rows of support columns 51 correspond to and match the edge plates formed at the upper ends of the two frames 41, respectively, so that the edge plates at the upper ends of the frames 41 can be pressed against the inner top surface of the clean air chamber 30. The lower ends of the two frames 41 extend into the groove of the support seat 50.

[0050] The two frames 41 are arranged to be tilted relative to each other. Specifically, the upper ends of the two frames 41 are relatively far away, and the lower ends are relatively close, so that the top projection area of ​​the frame 41 or the filter wall body formed by the frame 41 and the filter cloth member 42 can be increased, so that the concrete dropped from the filter cloth member 42 can be dispersedly dropped on a larger area, and it is not easy to accumulate to a too high height in a short time. At the same time, by setting a support seat 50, and extending the lower ends of the two frames 41 into the groove of the support seat 50, and making the left-right width of the upper port of the groove not less than the vertical spacing between the upper ends of the two frames 41, it can be ensured that the concrete dropped from the filter cloth members 42 on the left and right sides falls into the groove of the support seat 50. The associated structure formed by the two configured frames 41 and the support seat 50 can, on the one hand, effectively collect the fallen concrete in a centralized manner, thereby facilitating the cleaning of the clean air chamber 30; on the other hand, it can prevent the air flow from sweeping the fallen concrete when flowing in the clean air chamber 30 toward the filter plate assembly 40, thereby effectively suppressing the dust condition / dust concentration condition in the clean air chamber 30, helping to extend the cleaning time interval for the filter plate assembly 40 and reduce the frequency of cleaning.

[0051] The number of duct fans 70 disposed on one filter plate assembly 40 may be one or multiple duct fans distributed alternately along the front-to-back direction. In other embodiments, four filter plate units may be included, and the two filter plate units opposite to each other on the left and right are tilted to the left and right respectively relative to the vertical plane extending forward and backward; the two filter plate units opposite to each other on the front and back are tilted forward and backward respectively relative to the vertical plane extending left and right.

[0052] A vibrator 60 is provided at the bottom of the groove of the support seat 50. The vibrator 60 is connected to the lower ends of the two frames 41, and can make the two frames 41 vibrate at the same time. After the vibrator 60 is provided, the two frames 41 can be aroused to vibrate, which can cause the concrete attached to the filter cloth member 42 to fall downward, and it is not easy to accumulate too thick thickness on the filter cloth member 42, which helps to prevent the gaps on the filter cloth member 42 from being blocked too quickly, thereby adversely affecting the air permeability and filtering performance of the filter cloth member 42. Therefore, after the vibrator 60 is provided, the time interval for cleaning and maintaining the filter plate assembly 40 can be extended, reducing the use cost.

[0053] like Figure 3As shown, the filter plate unit also includes a pair of tie rods 43. The two tie rods 43 are arranged in an X-shaped cross and are fixed on two diagonal positions on the frame 41 respectively. A disc 44 is fixed at the intersection of the two tie rods 43, so that the notch of the disc 44 faces the filter cloth surface of the filter cloth member 42, and a vertical spacing is formed between the port of the disc 44 and the filter cloth surface of the filter cloth member 42. Both ends of the tie rod 43 are formed with a wave-shaped elastic deformation section (not shown in the figure), and the elastic deformation section can make the tie rod 43 bounce / wave back and forth in a direction relatively vertical to the filter cloth surface (of the filter cloth member 42), and can carry the disc 44 to make a cyclic action of approaching and moving away from the filter cloth surface (of the filter cloth member 42), so that the disc 44 can pull the tie rod 43 to vibrate.

[0054] After the air flow through the filter cloth member 42 enters the disc-shaped member 44, it can push the disc-shaped member 44 to move away from the filter cloth member 42, causing the elastic deformation section on the pull rod 43 to elastically deform. When the elastic deformation resistance generated by the pull rod 43 can resist the push and pull force of the disc-shaped member 44, the disc-shaped member 44 can be urged to move toward the side close to the filter cloth member 42 under the action of the elastic deformation section, until the elastic deformation section can no longer resist the push and pull force of the disc-shaped member 44, and the disc-shaped member 44 moves toward the side away from the filter cloth member 42 again, and this reciprocating cycle causes the pull rod 43 to vibrate.

[0055] like Figure 3 , Figure 4 As shown, the filter plate units are each configured with two detection components 90, and the two detection components 90 are arranged on the left and right sides of the disc-shaped member 44, as shown in FIG. Figure 3 As shown, the detection assembly 90 can be placed close to the intersection angle of the two pull rods 43.

[0056] The detection assembly 90 can detect the vibration / fluctuation of the pull rod 43, such as the frequency and amplitude of the fluctuation of the pull rod 43, and can transmit the detection situation to the controller. The controller can analyze and determine the air permeability and filtering state / capacity of the filter cloth member 42 according to the vibration frequency and / or amplitude of the pull rod 43.

[0057] The detection assembly 90 includes a detector body 91, two frames 92 and a crossbar 93. Both ends of the crossbar 93 are fixed to the frame 41. The middle of the crossbar 93 is raised in a direction away from the filter cloth member 42, and the detector body 91 is fixed at the raised portion of the crossbar 93. The middle portions (raised portions) of the two crossbars 93 correspond to the upper left and right cross angle positions of the two pull rods 43, respectively.

[0058] The two frames 92 are opposite to each other front and back (the term "opposite to each other front and back" herein refers to Figure 3 At the viewing angle shown; if Figure 4 The frame 92 is fixed to the cross bar 93 (left and right relative to each other in the perspective shown), and is located on both sides of the detector body 91. The frame 92 includes an L-shaped connecting arm portion 921 and a U-shaped claw portion 922. The upper end of the vertical plate of the connecting arm portion 921 is fixedly connected to the cross bar 93, and the flat plate end of the connecting arm portion 921 is fixedly connected to the claw portion 922. An elastic deformation portion 923 is formed at the bend of the connecting arm portion 921. The sensitive portion 911 connected to the detector body 91 is fixedly arranged on the elastic deformation portion 923.

[0059] The two claws 922 are respectively fixed on the two pull rods 43 and correspond to the position close to the disc-shaped member 44. When the pull rod 43 vibrates, it can cause the elastic deformation part 923 to be elastically deformed synchronously. When the elastic deformation part 923 is elastically deformed, the sensitive part 911 fixed thereon can produce a physical quantity change, causing the detector body 91 to generate a sensor signal. After the sensor signal generated by the detector body 91 is transmitted to the controller in real time, the controller can process the sensor signal to obtain vibration signals such as vibration frequency and amplitude, and can determine the ventilation / ventilation condition of the filter cloth member 42 according to the condition analysis of the vibration signal to guide the cleaning and maintenance operation process of the filter plate assembly 40. That is, by setting the detection component 90, the air permeability and filtration performance of the filter plate assembly 40 can be monitored and judged, and when it is determined that the air permeability and filtration capacity of the filter cloth member 42 on the filter plate assembly 40 is insufficient, an early warning prompt can be issued, and the filter plate assembly 40 can be cleaned in time. When the air permeability of the filter bag 20 is too low, it can also be reflected through the sensor signal of the detection component 90.

[0060] The detector body 91 may be a strain sensor, and the sensitive portion 911 is then the strain gauge portion of the strain sensor. When the strain gauge portion follows the elastic deformation portion 923 to generate elastic deformation in real time, the strain sensor can send a sensing signal in real time. How to analyze and process the sensing signal fed back to the controller by the detection component 90, and how to make a judgment do not belong to the technical core of the present invention, and those skilled in the art can achieve this according to the technical purpose and with reference to the prior art, so it will not be elaborated. However, it is not excluded that there may be a method and a judgment method associated with the detection component 90 in the present invention that can perform unique analysis and processing on the sensing signal.

[0061] like Figure 1 , Figure 2As shown, an end ring 21 and a support frame 22 are provided at the upper end of the filter bag 20. The lower part of the end ring 21 is fixedly connected to the upper port of the filter bag 20, and the end ring 21 can prop open the upper port of the filter bag 20, so that the barrel cavity of the filter bag 20 is fully connected with the clean air chamber 30. The upper part of the end ring 21 extends upward relative to the filter bag 20 and is provided with a thread structure, and the filter bag 20 and the top wall of the dust collecting barrel 10 are fixedly connected together through the thread structure provided on the upper part of the end ring 21, which can avoid the presence of a profile gap between the dust collecting cavity 13 and the clean air chamber 30. The upper port of the end ring 21 can be extended upward into the clean air chamber 30. The support frame 22 is correspondingly arranged above the end ring 21 and located in the clean air chamber 30.

[0062] The support frame 22 includes a plurality of support rods 221 and a top plate. The support rods 221 are arranged in a vertical direction, and the lower ends of the support rods 221 are fixedly connected to the upper end surface of the end ring 21, and the upper ends are fixedly connected to the top plate, so that a relatively large vertical spacing can be formed between the upper port of the end ring 21 and the top plate. At that time, the air flow from the cylinder cavity of the filter bag 20 to the clean air chamber 30 will be blocked by the top plate, and the flow direction of the air flow will be changed, so that it can mainly flow between the support rods 221 in a horizontal direction, and then blow on the filter plate assembly 40. Therefore, the top plate can suppress the vertical flow velocity and flow rate of the air flow flowing out of the filter bag 20, and can promote the air flow to fully contact with the filter cloth members 42 on both sides, and make the air flow direction contact with the cloth surface of the filter cloth member 42 at a large angle, which is helpful to improve the filtering effect of the filter plate assembly 40.

[0063] like Figure 1 , Figure 2 As shown, each filter bag 20 is correspondingly provided with a dust cleaning assembly 80. The upper portion of the dust cleaning assembly 80 is fixedly connected to the support frame 22, the lower portion is fixedly connected to the bottom of the filter bag 20, and the middle portion is associated with a power unit, and the power unit can drive the filter bag 20 (the cylindrical bag body portion) to produce elastic deformation in the vertical direction, so that the length of the filter bag 20 can produce telescopic changes.

[0064] The controller controls the power on and off state of the power unit, and can control the stress state of the filter bag 20 in the vertical direction, so that the (cylindrical) bag body of the filter bag 20 produces elastic expansion and contraction deformation in the vertical direction, so as to cause the concrete attached to the outer wall of the filter bag 20 to fall off the filter bag 20. After the dust cleaning component 80 is set, it is helpful to keep the filter bag 20 in an efficient ventilation and filtering state for a long time, so that the dust suppression device of the concrete mixing station can operate stably and efficiently for a long time, improve the suppression effect of the dust generated by the concrete mixing station from overflowing to the outside, and effectively prevent dust pollution.

[0065] The dust cleaning assembly 80 includes a connecting rod 81, a sleeve 82, a spring 83, a suspension rod 84, an electromagnet part 85 and a permanent magnet part 86. The spring 83, the electromagnet part 85 and the permanent magnet part 86 can be regarded as the power part; or only the electromagnet part 85 and the permanent magnet part 86 can be regarded as the power part.

[0066] The connecting rod 81 is arranged in the filter bag 20 along the vertical direction, and a column block portion 811 is formed at the upper part of the connecting rod 81, and a disc-shaped portion 812 that can be fixedly connected to the bottom of the filter bag 20 is formed at the lower end of the connecting rod 81. The disc-shaped portion 812 can open the lower part of the bag cavity of the filter bag 20. The column block portion 811 is placed in the barrel cavity of the sleeve 82, and the column block portion 811 can move in the vertical direction relative to the sleeve 82. The disc-shaped portion 812 includes a state in which its main body is an annular body and a state in which its main body is a barrel body.

[0067] The barrel cavity of the sleeve 82 is arranged to extend in the vertical direction. The upper end of the sleeve 82 is formed with a threaded countersunk hole that can be fixedly connected to the lower end of the suspension rod 84 through a threaded structure, and the bottom wall of the sleeve 82 is formed with a through hole for the connecting rod 81 to pass through. After the connecting rod 81 passes downward out of the barrel cavity of the sleeve 82, it is fixedly connected to the disc-shaped portion 812.

[0068] The spring 83 is sleeved on the connecting rod 81 and is located at the lower part of the barrel cavity of the sleeve 82. The two ends of the spring 83 are respectively in contact with the inner bottom surface of the sleeve 82 and the lower end surface of the column block 811.

[0069] The upper end of the suspension rod 84 is provided with a screw portion 841, and a nut is arranged on the screw portion 841, and the upper end of the suspension rod 84 is fixedly connected to the top plate of the support frame 22, so that the entire dust cleaning assembly 80 is suspended in the vertical direction.

[0070] The electromagnet part 85 is fixed at the lower end of the suspension rod 84 and extends into the barrel cavity of the sleeve 82. The electromagnet part 85, the duct fan 70, the vibrator 60, the detection assembly 90, etc. are all connected to the controller, so that the controller can control the on and off state of the electromagnet part 85, the operating state of the duct fan 70, the operating state of the vibrator 60, and process the sensor signal of the detection assembly 90. The permanent magnet part 86 is fixed at the upper end of the column block part 811 and corresponds to the lower part of the electromagnet part 85.

[0071] In the initial state, the spring 83 can push the column block 811 upward, so that the permanent magnet part 86 is close to the electromagnet part 85, so that the upper end surface of the permanent magnet part 86 is in contact with the lower end surface of the electromagnet part 85 (directly or indirectly). An elastic ring 861 can be provided at the upper end of the permanent magnet part 86 to form a vertical gap between the opposite end surfaces of the permanent magnet part 86 and the electromagnet part 85, and to buffer the impact force when the two move relative to each other.

[0072] When the electromagnet part 85 is powered on, it can exert a downward pushing force on the column block part 811 to cause the column block part 811 to move downward relative to the sleeve 82. That is, when the electromagnet part 85 is powered on, the end surface magnetic pole facing the permanent magnet part 86 is the same as the magnetic pole at the upper end of the permanent magnet part 86, so that a repulsive thrust can be generated between the opposite end surfaces of the two, and the column block part 81 or the upper end of the connecting rod 81 can be driven to move downward in the vertical direction relative to the sleeve 82.

[0073] After the electromagnet part 85 is energized for a certain period of time, the spring 83 can be further compressed and a large amount of elastic potential energy can be accumulated. At the moment when the electromagnet part 85 is powered off, the elastic potential energy accumulated by the spring 83 can drive the column block part 811 to rebound upward, and gradually return to rest after colliding with the electromagnet part 85 for many times. During this period, when the spring 83 accumulates elastic potential energy, the filter bag 20 can be stretched and lengthened, and during the repeated reverberation of the spring 83 gradually releasing the elastic potential energy, the filter bag 20 can cyclically switch between the stretched and contracted states, thereby forming an action of shaking the bag body of the filter bag 20, which helps to fully cause the dust attached to the outer wall of the filter bag 20 to fall off, and causes the filter bag 20 to maintain a good and stable filtering working state.

[0074] The present invention also relates to a dust suppression device for a concrete mixing station, including a powder silo, and a filter cloth unit is provided on the top of the powder silo. A top cover capable of covering the filter cloth unit inside is provided on the upper part of the powder silo. The above-mentioned concrete mixing station dust suppression powder tank is also included. The cover cavity of the top cover is connected to the connecting end 11 on the dust collecting barrel 10 through a pipeline, and the dust that diffuses into the cover cavity of the top cover through the filter cloth unit on the upper part of the powder silo is introduced into the dust collecting cavity 13 of the dust collecting barrel 10 through the connecting end 11, and finally discharged to the outside after passing through the filter bag 20, the clean air chamber 30, and the filter plate assembly 40.

[0075] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. The present invention can be improved in many aspects without violating the overall concept, and those familiar with the technology can modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A dust suppression powder tank for a concrete mixing station, characterized in that: It comprises a dust collecting cylinder (10), a plurality of filter bags (20), a clean air chamber (30) and at least one filter plate assembly (40); A communication end (11) is provided on the side wall of the dust collecting cylinder (10), and a valve channel portion (12) is provided at the bottom; A plurality of filter bags (20) are arranged in a vertical direction and suspended in a dust collecting cavity (13) of a dust collecting cylinder (10); a clean air chamber (30) is fixed to the top of the dust collecting cylinder (10); the upper portions of the filter bags (20) are fixedly connected to the top wall of the dust collecting cylinder (10), and the upper ports of the filter bags (20) are connected to the clean air chamber (30); the lower ends of the filter bags (20) are closed ends; The filter plate assembly (40) is fixedly arranged in the clean air chamber (30) and is capable of dividing an independent chamber in the clean air chamber (30), and a fan is arranged on the upper part of the independent chamber; the filter plate assembly (40) contains a plurality of filter cloth pieces (42), and the filter cloth pieces (42) are arranged on each side wall surface communicating between the independent chamber and the clean air chamber (30).

2. A dust suppression powder tank for a concrete mixing station according to claim 1, characterized in that: The filter plate assembly (40) comprises two filter plate units, and the filter plate units comprise a frame (41); the filter cloth member (42) is arranged inside the frame (41); the two frames (41) are arranged to be inclined relative to each other, and the upper ends of the two frames (41) are relatively far apart and respectively fixedly connected to the inner top wall of the clean air chamber (30), while the lower ends are relatively close and fixedly connected together; the front end and the rear end of the independent chamber are both closed ends.

3. A dust suppression powder tank for a concrete mixing station according to claim 2, characterized in that: A support seat (50) is fixedly provided in the clean air chamber (30); a groove is formed at the lower part of the support seat (50); two rows of support columns (51) are arranged on the upper end surface of the groove opening, and each row contains a plurality of support columns (51) arranged alternately in the front and rear directions; the support columns (51) extend upward in the vertical direction; the upper ends of the two frames (41) are formed with edge plates extending horizontally; the two rows of support columns (51) are matched with the two edge plates, so that the two edge plates can be pressed against the inner top surface of the clean air chamber (30); and the lower ends of the two frames (41) extend into the groove of the support seat (50).

4. A dust suppression powder tank for a concrete mixing station according to claim 3, characterized in that: A vibrator (60) is provided at the inner bottom of the groove of the support seat (50); the vibrator (60) is connected to the lower ends of the two frames (41) and can cause the two frames (41) to vibrate.

5. A dust suppression powder tank for a concrete mixing station according to claim 2, characterized in that: The filter plate unit further comprises a pair of tie rods (43); the two tie rods (43) are arranged in an X-shaped cross pattern and are fixed to the frame (41); a disc-shaped member (44) is fixedly provided at the intersection of the two tie rods (43), with the notch of the disc-shaped member (44) facing the filter cloth member (42); wave-shaped elastic deformation sections are formed on both end sides of the tie rods (43); the elastic deformation sections can cause the tie rods (43) to fluctuate in a direction perpendicular to the filter cloth member (42); and each filter plate unit is correspondingly provided with at least one detection component (90); The detection component (90) can detect the fluctuation frequency and amplitude of the pull rod (43).

6. A dust suppression powder tank for a concrete mixing station according to claim 5, characterized in that: The detection assembly (90) comprises a detector body (91), two frames (92) and a crossbar (93); the crossbar (93) is fixed to the frame (41), and the middle portion thereof is raised in a direction away from the filter cloth member (42); the detector body (91) is fixed to the raised portion on the crossbar (93); Two frames (92) are fixed on the crossbar (93) and correspond to the two sides of the detector body (91); the frame (92) comprises an L-shaped connecting arm portion (921) and a U-shaped clamping claw portion (922); the upper end of the connecting arm portion (921) is fixedly connected to the crossbar (93), and the other end is fixedly connected to the clamping claw portion (922); an elastic deformation portion (923) is formed at the bending portion of the connecting arm portion (921); and the sensitive portion (911) connected to the detector body (91) is fixedly arranged on the elastic deformation portion (923); The two claw portions (922) are respectively fixedly matched with the two pull rods (43), so that the sensitive portion (911) can produce a physical quantity change accompanying the wave motion of the pull rod (43), thereby causing the detector body (91) to generate a sensing signal.

7. A dust suppression powder tank for a concrete mixing station according to claim 1, characterized in that: An end ring (21) and a support frame (22) are provided at the upper end of the filter bag (20); the end ring (21) can prop open the upper end of the filter bag (20), and the filter bag (20) is fixedly connected to the top wall of the dust collecting barrel (10) through the end ring (21); the support frame (22) is correspondingly arranged above the end ring (21) and is located in the clean air chamber (30); the support frame (22) comprises a plurality of support rods (221) fixedly connected to the end ring (21) and a top plate fixedly arranged on the upper ends of the support rods (221); Each filter bag (20) is correspondingly provided with a dust cleaning assembly (80); the upper portion of the dust cleaning assembly (80) is fixedly connected to the support frame (22), the lower portion is fixedly connected to the bottom of the filter bag (20), and the middle portion is associated with a power unit, so that the power unit can drive the filter bag (20) to produce elastic deformation in the vertical direction.

8. A dust suppression powder tank for a concrete mixing station according to claim 7, characterized in that: The dust cleaning assembly (80) comprises a connecting rod (81), a sleeve (82), a spring (83), a suspension rod (84), an electromagnet portion (85) and a permanent magnet portion (86); The connecting rod (81) is arranged in the filter bag (20) along the vertical direction, with a column block portion (811) formed at the upper portion and a disc-shaped portion (812) fixedly connected to the bottom of the filter bag (20) formed at the lower end; the column block portion (811) is disposed in the sleeve (82) and can move in the vertical direction relative to the sleeve (82); The upper end of the sleeve (82) is fixedly connected to the suspension rod (84), and a through hole is formed on the bottom wall thereof for the connecting rod (81) to pass through; The spring (83) is sleeved on the connecting rod (81), and its two ends are respectively in contact with the inner bottom surface of the sleeve (82) and the column block (811); The upper end of the suspension rod (84) is fixedly connected to the top plate of the support frame (22); The electromagnet part (85) is fixed to the lower end of the suspension rod (84) and extends into the barrel cavity of the sleeve (82); The permanent magnet part (86) is fixed to the upper end of the column block part (811); the spring (83) can push the column block part (811) upwards, so that the permanent magnet part (86) is close to the electromagnet part (85); When the electromagnet part (85) is energized, it can exert a downward thrust on the column block part (811), and can cause the column block part (811) to move downward relative to the sleeve (82), thereby driving the filter bag (20) to generate elastic deformation in the vertical direction.

9. A dust suppression powder tank for a concrete mixing station according to claim 8, characterized in that: An elastic ring (861) is fixedly provided at the upper end of the permanent magnet part (86); the spring (83) can push the column block part (811) upwards so that the elastic ring (861) contacts the lower end surface of the electromagnet part (85).

10. A dust suppression device for a concrete mixing station, comprising a powder silo, and a filter cloth unit is provided on the top of the powder silo; characterized in that: A top cover capable of covering the filter cloth unit inside is provided on the upper part of the powder bin; It also comprises the dust suppression powder tank for a concrete mixing station as claimed in any one of claims 1 to 9; the hood cavity of the top hood is connected to the connecting end (11) on the dust collecting cylinder (10) via a pipeline.

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