Dust removal type blow-off valve and control method thereof
By installing a dust-collecting discharge valve below the discharge port of the grain drying equipment, combined with negative pressure suction and sensor control, the problems of dust pollution and high equipment failure rate have been solved, achieving environmental protection and stable equipment operation.
Patent Information
- Application Number
- CN202512009106.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-29
- Publication Date
- 2026-03-27
AI Technical Summary
Existing grain drying equipment generates dust during discharge, polluting the environment and has a high failure rate, which has not been effectively addressed.
Design a dust removal discharge valve. By setting a valve plate below the discharge port and connecting it to the drive mechanism, and combining it with dust removal pipelines and external dust removal equipment, dust is sucked in by negative pressure. The valve plate opening and the operation of the dust removal equipment are dynamically adjusted by sensors and control methods to achieve automated dust control.
It effectively avoids dust pollution of the surrounding environment, reduces the failure rate of grain drying equipment, and improves the stability and efficiency of equipment operation.
Smart Images
Figure CN121734987A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of agricultural machinery, and in particular to a dust-removing discharge valve and a control method thereof. BACKGROUND
[0002] In the production process of grain, the drying site is usually limited, and the grain purchased by the grain depot often has a water content exceeding the safe water content. When the temperature and humidity in the environment where the grain is located meet the growth and reproduction of microorganisms, mold will occur, especially when it is cloudy or rainy during the grain purchase period. In addition, even if the water content of the grain does not exceed the safe water content when it is stored in the warehouse, the grain stored in the warehouse also needs to be dried regularly to ensure that the grain does not mold due to natural moisture return.
[0003] At present, enterprises usually use grain drying equipment to dry and dehydrate the grain before the grain is stored in the warehouse. However, the surface of the grain and the impurities contained therein will become dry and brittle during the drying process of the grain. The grain drying equipment continuously turns the grain, and under the action of heat, the surface of the grain and the impurities are broken and peeled off into fine particles, thereby forming a large amount of dust. The existing discharge mechanism does not pay attention to the removal of dust. Once the discharge valve is opened for discharge, the dust is discharged from the grain drying equipment, which not only pollutes the surrounding environment, but also has an adverse effect on the grain drying equipment, and the failure rate of the grain drying equipment is increased. SUMMARY
[0004] The main purpose of the present application is to provide a dust-removing discharge valve and a control method thereof to solve the technical problems of the prior art that the grain is not de-dusted after being dried, which easily causes pollution of the surrounding environment and a high equipment failure rate.
[0005] To achieve the above-mentioned purpose, the present application provides a dust-removing discharge valve, which comprises a valve body, a valve plate and a driving mechanism. The valve body is provided with a discharge port. The valve plate is arranged below the discharge port and closely attached to the discharge port. The valve plate is in sliding connection with the valve body. The driving mechanism is fixed in the valve body, and the output end of the driving mechanism is connected with the valve plate. The valve body further comprises a dust removal pipeline, which is connected with an external dust removal equipment. The suction inlet of the dust removal pipeline is located below the discharge port.
[0006] Further, the valve plate further comprises an insertion plate, which is arranged at one end of the valve plate close to the discharge port. The size of the insertion plate is consistent with that of the suction inlet. When the dust-removing discharge valve is closed, the insertion plate is inserted into the suction inlet.
[0007] Further preferably, a limiting plate is further included, which is fixedly connected with the valve body. The thickness of the insertion plate is greater than that of the valve plate. When the dust-removing discharge valve is opened, the insertion plate abuts against the limiting plate to limit the position of the valve plate.
[0008] Further preferably, the valve plate is further provided with a discharge groove, which is arranged at the intersection of the plug and the valve plate.
[0009] Further, a filter screen is further included, the dust removal pipeline is a double-layer structure, and the dust removal pipeline comprises a first dust removal pipeline located at an upper layer and a second dust removal pipeline located at a lower layer; a communication hole is arranged between the first dust removal pipeline and the second dust removal pipeline; the suction inlet is located at the bottom of the first dust removal pipeline; the second dust removal pipeline is connected with external dust removal equipment; the length of the communication hole is consistent with the length of the suction inlet; and the filter screen is laid on the communication hole.
[0010] Further, a plurality of guide wheels are further included, which are rotationally connected with the valve body; the plurality of guide wheels are divided into two layers, i.e., an upper layer and a lower layer; the upper layer guide wheels are connected with the upper side of the valve plate; and the lower layer guide wheels are connected with the lower side of the valve plate.
[0011] The application further provides a control method of the dust removal type discharge valve, which is applied to the dust removal type discharge valve as described above and comprises the following steps: S1, obtaining a mapping relationship between a dust generation amount and initial opening degree of a valve plate and initial negative pressure parameters of dust removal; S2, obtaining characteristic parameters of grain entering the valve body, determining the dust generation amount according to the characteristic parameters, and determining the initial opening degree of the valve plate and the initial negative pressure parameters of dust removal according to the mapping database; wherein the characteristic parameters include humidity, granularity and type; S3, starting the dust removal type discharge valve, controlling the valve plate to operate according to the initial opening degree, and controlling the dust removal equipment to operate according to the initial negative pressure parameters; S4, collecting real-time dust concentration of the discharge port and real-time pressure difference between the inside and outside of the dust removal pipeline; S5, obtaining a preset concentration value of the dust concentration and a preset pressure difference value between the inside and outside of the dust removal pipeline; S6, judging whether the real-time dust concentration is less than or equal to the preset concentration value; if yes, maintaining the valve plate to operate and entering step S7; S7, judging whether the real-time pressure difference is less than or equal to the preset pressure difference value; if yes, maintaining the dust removal equipment to operate and returning to step S4.
[0012] Further, the step S6 and the step S7 further comprise the following steps: if the real-time dust concentration is greater than the preset concentration value, controlling the opening degree of the valve plate to decrease by a preset increment and returning to step S4; if the real-time pressure difference is greater than the preset pressure difference value, controlling the dust removal equipment to perform back-blowing cleaning on the dust removal pipeline and returning to step S4.
[0013] Further preferably, the control of the reverse blowing cleaning of the dust removal pipeline by the dust removal equipment specifically comprises the following steps: The dust removal equipment is controlled to run reversely, the running power is increased by a preset power increment, lasts for a preset time length, then the running power is decreased by the preset power increment, lasts for a preset time length, and then the dust removal equipment is controlled to run forwardly.
[0014] Further preferably, the method further comprises the following steps: The continuous number of times that the real-time pressure difference is greater than the preset pressure difference value is judged, and if the continuous number of times is greater than a preset continuous number of times, it is determined that the dust removal pipeline is blocked, and an alarm signal is sent to prompt the unblocking.
[0015] Compared with the prior art, the present application has the following beneficial effects: The valve plate is arranged below the discharge port, and a driving mechanism drives the valve plate to move to realize the opening and closing of the discharge port; the valve body of the embodiment is connected with the dust removal equipment outside through the dust removal pipeline, the suction inlet of the dust removal pipeline is arranged below the discharge port, and when in use, a negative pressure is formed in the dust removal pipeline, and the dust generated after the drying of the grain is sucked into the dust removal pipeline due to the negative pressure during the discharge process to complete the dust removal, so that the surrounding environment is prevented from being polluted by the dust, and the equipment failure rate of the grain drying equipment is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of the drawings shown.
[0017] Figure 1 It is a perspective view of the overall structure in an embodiment of the present application; Figure 2 It is a top view of the overall structure in an embodiment of the present application; Figure 3 It is a partial structure view in the embodiment of the present application; Figure 2 It is a sectional view of A-A in the embodiment of the present application; Figure 4 It is a partial structure view in the embodiment of the present application; Figure 3 Figure 5 It is a sectional view of B-B in the embodiment of the present application. Figure 2 The purpose of the present application, functional characteristics and advantages will be further described with reference to the embodiments and the accompanying drawings.
[0018]
[0019] Explanation of reference signs: 1, valve body; 2, valve plate; 3, discharge port; 4, guide wheel; 5, motor; 6, cylindrical interface; 7, plug plate; 8, first dust removal pipeline; 9, second dust removal pipeline; 10, sliding block; 11, hinged seat; 12, limiting plate; 13, discharge groove; 14, suction port; 15, communication hole. DETAILED DESCRIPTION
[0020] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the present application.
[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as described in the drawings), and if the certain posture changes, the directional indications also change accordingly.
[0023] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.
[0024] Please refer to Figures 1 to 5The embodiment provides a dust removal type discharge valve, which comprises a valve body 1, a valve plate 2 and a driving mechanism, the valve body 1 is provided with a discharge port 3, the valve plate 2 is arranged below the discharge port 3 and closely attached to the discharge port 3, the valve plate 2 is in sliding connection with the valve body 1, the driving mechanism is fixed in the valve body 1, and the output end of the driving mechanism is connected with the valve plate 2; the valve body 1 further comprises a dust removal pipeline, the dust removal pipeline is connected with external dust removal equipment, and the suction inlet 14 of the dust removal pipeline is located below the discharge port 3. In the embodiment, the valve plate 2 is arranged below the discharge port 3, the driving mechanism drives the valve plate 2 to move, so that the opening and closing of the discharge port 3 are realized; the valve body 1 of the embodiment is provided with the dust removal pipeline which is connected with external dust removal equipment, the suction inlet 14 of the dust removal pipeline is arranged below the discharge port 3, in use, a negative pressure is formed in the dust removal pipeline, dust generated after drying of grains is sucked into the dust removal pipeline in the discharge process due to the negative pressure, so that dust pollution to the surrounding environment is avoided, and the equipment failure rate of the grain drying equipment is reduced.
[0025] In some embodiments, the dust removal pipeline can be further connected with an air extractor inside the grain drying equipment.
[0026] Further, the valve plate 2 further comprises an insertion plate 7, the insertion plate 7 is arranged at one end of the valve plate 2 close to the discharge port 3, the size of the insertion plate 7 is consistent with that of the suction inlet 14, and the insertion plate 7 is inserted into the suction inlet 14 when the dust removal type discharge valve is closed. When grains are not discharged, the insertion plate 7 is inserted into the suction inlet 14, so that the dust removal pipeline is closed, the dust removal type discharge valve and the dust removal pipeline are opened and closed in linkage, the control convenience is improved, the air volume loss of the air extractor of the grain drying equipment can be reduced without external dust removal equipment.
[0027] Further preferably, a limiting plate 12 is further arranged, the limiting plate 12 is fixedly connected with the valve body 1, the thickness of the insertion plate 7 is greater than that of the valve plate 2, and the insertion plate 7 is in abutment with the limiting plate 12 when the dust removal type discharge valve is opened, so as to limit the position of the valve plate 2. The valve plate 2 is further provided with a discharge groove 13, and the discharge groove 13 is arranged at the intersection of the insertion plate 7 and the valve plate 2. The limiting plate 12 limits the position of the valve plate 2, so that the valve plate 2 is prevented from being deviated backward due to inertia in the opening process, and the control stability is improved. In the use process, grains remaining on the valve plate 2 can be squeezed and discharged through the discharge groove 13, so that the grains are prevented from being stuck between the insertion plate 7 and the valve plate 2 and from causing the valve plate 2 to be not opened to the position.
[0028] Further in the embodiment, the abutment positions of the insertion plate 7 and the limiting plate 12 are arranged as matching inclined surfaces, and the bottom of the discharge groove 13 is also arranged as an inclined surface, so that grains can be discharged from the inclined surface under the squeezing of the valve plate 2 after being opened, and the limiting plate 12 is prevented from being stuck.
[0029] In one embodiment, a filter screen is further included, the dust removal pipe is a double-layer structure, the dust removal pipe includes a first dust removal pipe 8 located at the upper layer and a second dust removal pipe 9 located at the lower layer, a communication hole 15 is arranged between the first dust removal pipe 8 and the second dust removal pipe 9, the suction inlet 14 is located at the bottom of the first dust removal pipe 8, the second dust removal pipe 9 is connected with an external dust removal device, the length of the communication hole 15 is consistent with the length of the suction inlet 14, and the filter screen is laid on the communication hole 15. The filter screen in this embodiment is of a detachable structure and can be detached from the suction inlet 14. Under the movement of the valve plate 2 and the suction of negative pressure, some grain particles may enter the suction inlet 14, and the grain is discharged along with the dust removal pipe, causing waste of grain, and seriously, the dust removal pipe may be blocked.
[0030] In this embodiment, a plurality of guide wheels 4 are further included, the plurality of guide wheels 4 are rotationally connected with the valve body 1, the plurality of guide wheels 4 are divided into upper and lower two layers, the upper guide wheels 4 are connected with the upper side of the valve plate 2, and the lower guide wheels 4 are connected with the lower side of the valve plate 2. The guide wheels 4 provide constraint for the movement of the valve plate 2, so that the valve plate 2 is more stable under the movement of the load. Especially, when a large amount of grain is accumulated at the discharge port 3, under the action of gravity, the other end of the valve plate 2 is raised upward due to the influence of the moment, and the guide wheels 4 can press the other end of the valve plate 2, so as to avoid that the valve plate 2 cannot be smoothly opened due to the upward raising.
[0031] In one embodiment, the driving mechanism can be a small motor, which is connected with the guide wheels 4, so as to drive the movement of the valve plate 2.
[0032] In one embodiment, the driving mechanism includes a telescopic cylinder and a sliding block 10, the telescopic cylinder is fixed in the valve body 1, the sliding block 10 is fixedly connected with the valve plate 2, and the sliding block 10 is connected with the telescopic end of the telescopic cylinder. The telescopic cylinder can be a pneumatic cylinder or an electric cylinder.
[0033] In one embodiment, the driving mechanism includes a motor 5 and a sliding block 10, the motor 5 is fixed in the valve body 1, the sliding block 10 is connected with the valve plate 2, a threaded hole is arranged on the sliding block 10, an output shaft of the motor 5 is matched with the threaded hole, so as to drive the movement of the sliding block 10. The motor 5 is forward rotated and reversely rotated, the sliding block 10 only needs to reciprocate through the threaded driving, the sliding block 10 can not only drive the movement of the valve plate 2, but also provide support below the valve plate 2, so as to avoid the deformation of the valve plate 2.
[0034] As further preferred, the embodiment further comprises a hinged seat 11, and the slider 10 is bifurcated, and the slider and the hinged seat 11 are connected by a pin shaft. In the hinged fixing mode, the axis of the motor 5 after installation can not be in the same horizontal line as the slider 10. In other fixing modes, the motor 5 cannot work normally, and the hinged mode can rotate around the pin shaft to adapt to the installation of the motor 5.
[0035] As preferred, the embodiment further comprises a cylindrical interface 6 to connect with the pipeline of the external dust removal equipment.
[0036] The embodiment further provides a control method of the dust removal type discharge valve, which is applied to the dust removal type discharge valve as described above and comprises the following steps. S1, obtaining a mapping relationship between a dust generation amount and initial opening degree of a valve plate and initial negative pressure parameters of dust removal; S2, obtaining characteristic parameters of grain entering the valve body, determining the dust generation amount according to the characteristic parameters, and determining the initial opening degree of the valve plate and the initial negative pressure parameters of dust removal according to the mapping database; wherein the characteristic parameters include humidity, granularity and type; In the embodiment, the characteristic parameters of the grain are obtained by a sensor array; the sensor array comprises a near-infrared spectrum sensor, a capacitive humidity sensor and a laser particle size instrument; the near-infrared spectrum sensor is used for detecting the type of grain, and the detection accuracy is ≥98%; the capacitive humidity sensor is used for detecting the humidity of grain, and the detection range is 5%-20% and the accuracy is ±0.5%; and the laser particle size instrument is used for detecting the granularity of grain, and the detection range is 0.1-10mm and the accuracy is ±0.01mm.
[0037] S3, starting the dust removal type discharge valve, controlling the valve plate to operate according to the initial opening degree, and controlling the dust removal equipment to operate according to the initial negative pressure parameters; S4, collecting real-time dust concentration of the discharge port and real-time pressure difference inside and outside the dust removal pipeline; S5, obtaining a preset concentration value of the dust concentration and a preset pressure difference value inside and outside the dust removal pipeline; S6, judging whether the real-time dust concentration is less than or equal to the preset concentration value; if yes, maintaining the valve plate to operate and entering step S7; S7, judging whether the real-time pressure difference is less than or equal to the preset pressure difference value; if yes, maintaining the dust removal equipment to operate and returning to step S4.
[0038] Further, the step S6 and the step S7 further comprise the following steps: If the real-time dust concentration is greater than the preset concentration value, the opening degree of the valve plate is controlled to decrease by a preset increment, and the process returns to step S4; in the embodiment, the preset increment is 5%-10% of the current opening degree of the valve plate.
[0039] If the real-time pressure difference is greater than the preset pressure difference value, the dust removal equipment is controlled to perform back-blowing cleaning on the dust removal pipeline, and the step S4 is returned to.
[0040] Further preferably, the control of the dust removal equipment to perform back-blowing cleaning on the dust removal pipeline specifically comprises the following steps: The dust removal equipment is controlled to operate reversely, the operating power is increased by a preset power increment, lasts for a preset time length, then the operating power is decreased by the preset power increment, lasts for a preset time length, and then the dust removal equipment is controlled to operate forwardly. In the embodiment, the preset power increment is 10%-15% of the current operating power of the dust removal equipment, and the preset time length is 3-5s.
[0041] Further preferably, the method further comprises the following steps: It is judged whether the continuous number of times that the real-time pressure difference is greater than the preset pressure difference value is greater than a preset continuous number of times; if yes, it is determined that the dust removal pipeline is blocked, and an alarm signal is sent to prompt unblocking. In the embodiment, the preset continuous number of times is 3-5 times, and the alarm signal is an audible and visual alarm signal.
[0042] The dust removal type discharge valve control method has the following advantages compared with the prior art through the whole-process management and control of grain characteristics adaptation, dust and pressure difference closed-loop regulation and intelligent maintenance warning: first, the initial operating parameters are accurately matched to solve the poor adaptability of fixed parameters and ensure the optimal state in the initial operation period; second, the dust concentration is dynamically controlled to balance the environmental protection standard and the discharge efficiency; third, the automatic back-blowing unblocking and warning reduce the operation and maintenance cost and the failure downtime; fourth, the energy consumption configuration is optimized, and the system comprehensive energy consumption is significantly reduced; fifth, the whole-process automatic control improves the operation stability, reduces the operation threshold, and adapts to the large-scale grain processing demand.
[0043] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A dust-collecting discharge valve, characterized in that, The device includes a valve body, a valve plate, and a drive mechanism. The valve body has a discharge port, and the valve plate is located below and close to the discharge port. The valve plate is slidably connected to the valve body. The drive mechanism is fixed inside the valve body, and the output end of the drive mechanism is connected to the valve plate. The valve body also includes a dust removal pipe, which is connected to an external dust removal device. The suction inlet of the dust removal pipe is located below the discharge port.
2. The dust-collecting discharge valve according to claim 1, characterized in that, The valve plate also includes a slide plate, which is disposed at one end of the valve plate near the discharge port. The size of the slide plate is the same as that of the suction port. When the dust removal discharge valve is closed, the slide plate is inserted into the suction port.
3. The dust-collecting discharge valve according to claim 2, characterized in that, It also includes a limiting plate, which is fixedly connected to the valve body. The thickness of the insert plate is greater than the thickness of the valve plate. When the dust removal discharge valve is opened, the insert plate abuts against the limiting plate to restrict the position of the valve plate.
4. The dust-collecting discharge valve according to claim 2, characterized in that, The valve plate is also provided with a discharge groove, which is located at the intersection of the insert plate and the valve plate.
5. The dust-collecting discharge valve according to claim 1, characterized in that, It also includes a filter screen. The dust removal pipe has a double-layer structure, including a first dust removal pipe in the upper layer and a second dust removal pipe in the lower layer. A connecting hole is provided between the first dust removal pipe and the second dust removal pipe. The suction port is located at the bottom of the first dust removal pipe. The second dust removal pipe is connected to an external dust removal device. The length of the connecting hole is the same as the length of the suction port. The filter screen is laid on the connecting hole.
6. The dust-collecting discharge valve according to claim 1, characterized in that, It also includes multiple guide wheels, which are rotatably connected to the valve body. The multiple guide wheels are divided into upper and lower layers, with the upper guide wheel connected to the top of the valve plate and the lower guide wheel connected to the bottom of the valve plate.
7. A control method for a dust-collecting discharge valve, applied to the dust-collecting discharge valve as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. Obtain the mapping relationship between the amount of dust generated and the initial opening degree of the valve plate and the initial negative pressure parameter of the dust removal. S2. Obtain the characteristic parameters of the grain entering the valve body, determine the dust generation amount based on the characteristic parameters, and determine the initial opening degree of the valve plate and the initial negative pressure parameters of dust removal based on the mapping database; wherein, the characteristic parameters include humidity, particle size and type; S3. Start the dust removal discharge valve, control the valve plate to operate according to the initial opening, and control the dust removal equipment to operate according to the initial negative pressure parameter; S4. Collect the real-time dust concentration at the discharge port and the real-time pressure difference inside and outside the dust removal pipeline; S5. Obtain the preset concentration value of dust concentration and the preset pressure difference value inside and outside the dust removal pipeline; S6. Determine whether the real-time dust concentration is less than or equal to the preset concentration value; if so, maintain the valve plate operation and proceed to step S7. S7. Determine whether the real-time differential pressure is less than or equal to the preset differential pressure value; if so, maintain the operation of the dust removal equipment and return to step S4.
8. The control method for the dust collector discharge valve according to claim 7, characterized in that, Steps S6 and S7 further include the following steps: If the real-time dust concentration is greater than the preset concentration value, then control the opening of the valve plate to decrease by the preset increment, and return to step S4; If the real-time differential pressure is greater than the preset differential pressure value, then control the dust removal equipment to backflush and clean the dust removal pipeline, and return to step S4.
9. The control method for the dust collector discharge valve according to claim 8, characterized in that, The process of controlling the dust removal equipment to perform backflushing cleaning of the dust removal pipeline specifically includes the following steps: The dust removal equipment is controlled to operate in reverse, with the operating power increasing by a preset power increment for a preset duration, followed by a decrease in the operating power by a preset power increment for a preset duration, and then the dust removal equipment is controlled to operate in the forward direction.
10. The control method for the dust collector discharge valve according to claim 9, characterized in that, It also includes the following steps: Determine whether the number of consecutive times the real-time differential pressure is greater than the preset differential pressure value is greater than the preset number of consecutive times; if so, determine that a blockage has occurred in the dust removal pipeline and issue an alarm signal to prompt for clearing the blockage.