A kind of assembly line filter material drying oven and control method thereof

Abstract

The invention discloses an assembly line filter material drying oven and a control method thereof, aiming to provide an assembly line filter material drying oven control method with dual temperature sensors, strong detection stability and good drying degree control effect. The key points of the technical scheme are that the invention adopts a transmission channel, which is composed of two long guide rails arranged horizontally and in parallel. The filter material is clamped by the cooperation of the two long guide rails, and the extrusion mechanism formed by two covering frames and a driving cylinder arranged on the transmission channel and used to drive the covering frames to extrude and reset to the middle can accelerate the movement of water molecules in the filter material when the filter material is dried, thereby accelerating the drying. In order to reduce the rigid damage to the filter material, the elastic structure is used to increase the damage to the filter material during the extrusion pressure, so the practicability is greatly improved and the structure is simple. The invention is suitable for the technical field of filter material processing equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of filter material processing equipment, and more specifically, to an assembly line filter material drying oven and a control method thereof. Background Art

[0002] Filter cloth is a filter medium woven from natural or synthetic fibers, such as industrial filter cloth for industrial dust filtration. Commonly used materials include cotton, linen, wool, silk, asbestos fiber, glass fiber and some synthetic fibers, such as cotton canvas, twill and woolen cloth. In a broad sense, filter cloth also includes metal mesh or filter screen.

[0003] As for the actual function of the filter cloth, the filter cloth needs to be impregnated with PTFE during the production process. If the firmness of the impregnation needs to be improved, it needs to be sent to the oven for drying. Therefore, in the production process of the filter cloth, an oven is needed. When the oven is used, because the assembly line drying is adopted, the drying time is short. Therefore, after the humidity of the oven is tested, how to improve the drying efficiency through the corresponding control method is also an existing problem.

[0004] Traditional ovens mainly rely on their own high power to accelerate drying, and do not have the ability to squeeze the filter material to make the water flow, so the drying efficiency is relatively poor;

[0005] Moreover, the traditional method of loading filter media requires alignment with the loading position, and the loading position cannot be adjusted accordingly. Sometimes the filter media is large and wide, which makes loading extremely inconvenient, and affects the need to adjust the transmission channel for loading. The above three problems are urgently needed to be solved. Summary of the invention

[0006] In view of the shortcomings of the prior art, the object of the present invention is to provide a method for controlling an assembly line filter material drying oven with dual temperature sensors, strong detection stability and good drying degree control effect.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an assembly line filter material drying oven, comprising a frame, an oven arranged on the frame, feed ports respectively arranged on both sides of the oven and a winding and traction roller, the frame is provided with a transmission channel and the transmission channel is located in the middle of the oven and outputs to one side of the winding and traction roller, the oven comprises a plurality of groups of heating plates respectively arranged on the upper and lower sides of the transmission channel, a first driver for driving the heating plates to approach or move away from the filter material and an extrusion mechanism arranged on the transmission channel, the extrusion mechanism is used to squeeze the water in the filter material, and the transmission channel is composed of two long guide rails arranged horizontally and in parallel.

[0008] The present invention is further configured as follows: the extrusion mechanism includes two covering frames arranged on the inner side walls of the transmission channel, a driving cylinder arranged on the transmission channel and used to drive the covering frames to extrude and reset toward the middle, and an elastic structure arranged on the inner wall of the covering frames.

[0009] The present invention is further configured as follows: the elastic structure includes a plurality of slideways arranged on the inner wall of the covering frame, elastic members on both sides of the slideways slidably arranged, a support member connecting the two elastic members in sequence, and a support plate arranged on the support member and in contact with the side of the filter material, wherein the support member is configured to squeeze the elastic member when subjected to force; and to be reset by the elastic force of the elastic member when not subjected to force.

[0010] The present invention is further configured as follows: the transmission channel is also provided with a width adjustment structure for conveying filter materials of different widths, the width adjustment structure includes adjustment seats respectively arranged on the two long guide rails and placed on the outer sides of the long guide rails, a second driver connected to the adjustment seat and used for driving the long guide rails to move and increase or decrease the width of the transmission channel, and a distance controller used to control the second driver to adjust the position of the long guide rails.

[0011] The present invention is further configured as follows: an intermediate reference plate is provided in the oven for cooperating with a distance controller to adjust the center position of the filter material. The specific control method of the distance control is as follows: after the filter material enters the transmission channel, the distance controller detects the distances D1 and D2 between the two sides of the filter material and the intermediate reference plate respectively through a distance sensor, detects the distances D3 and D4 between the two long rails and the intermediate reference plate respectively, and sends a signal to the distance controller. The distance controller compares the displacement L=D2+|(D1-D2)| / 2 and the displacement L1=D4+|(D3-D4)| / 2. If the displacement L>the displacement L1 or the displacement L<the displacement L1, it indicates that the center line of the filter material deviates from the center line of the transmission channel, and it is necessary to drive the second driver to adjust the two long guide rails; until the displacement L=the displacement L1.

[0012] By adopting the above technical scheme, the beneficial effects are as follows: 1. The present invention adopts a transmission channel, which is composed of two long guide rails arranged horizontally and in parallel. Through the cooperation of the two long guide rails, the filter material is clamped, and the extrusion mechanism formed by the two covering frames and the driving cylinder arranged on the transmission channel and used to drive the covering frames to squeeze and reset to the middle can accelerate the movement of water molecules in the filter material when the filter material is dried, thereby accelerating the drying. In order to reduce the rigid damage to the filter material, the elastic structure is used to increase the damage to the filter material during the extrusion pressure, so the practicality is greatly improved and the structure is simple;

[0013] 2. In the present invention, the elastic structure is configured to include a plurality of slideways arranged on the inner wall of the covering frame, elastic members on both sides slidably arranged on the slideways, a support member connecting the two elastic members in sequence, and a support plate arranged on the support member and contacting the side of the filter material. The support member is configured to squeeze the elastic member when it is subjected to force; when it is not subjected to force, it is reset by the elastic force of the elastic member. Through the slideway structure, the elastic member, the support member and the support plate structure, the elastic member slides on the slideway structure, and when the support member is subjected to pressure, the elastic member squeezes the elastic member, thereby achieving the effect of elastic support. When the support member loses the force, the elastic member reverses the force to achieve the effect of elastic reset. The support plate structure is for the overall force area to improve the overall stability.

[0014] 3. Further, a width adjustment structure for conveying filter materials of different widths is provided on the transmission channel, and the width adjustment structure includes adjustment seats respectively arranged on the two long guide rails and placed on the outer sides of the long guide rails, a second driver connected to the adjustment seat and used to drive the long guide rails to move and increase or decrease the width of the transmission channel, and a distance controller for controlling the second driver to adjust the position of the long guide rails. With the above-mentioned structural arrangement, the overall structural stability is strong and the structure is relatively simple. The distance controller can control the center line position of the filter material and the transmission channel, so that after determining the center line position, the control of the feeding position can be increased, and the practicability is strong.

[0015] A control method applicable to the above-mentioned assembly line filter material drying oven, wherein a humidity controller and first and second humidity sensors electrically connected to the humidity controller are provided in the drying oven, wherein the first humidity sensor is installed in the drying oven, and the second humidity sensor is installed in the oven external environment of the drying oven, wherein the humidity controller automatically adjusts the distance change between the heating plate in each oven and the filter material according to the humidity change of the oven external environment, so as to ensure that the filter material is baked to the set drying degree within the actual dynamic demand of the fixed drying time;

[0016] According to the absolute humidity monitored by the first humidity sensor, i.e., the humidity in the oven, and the relative humidity monitored by the second humidity sensor, i.e., the humidity of the environment outside the oven, the distance between the heating plate and the filter material is automatically adjusted in combination with the monitoring structures of the two. The humidity controller includes a receiving unit for receiving the humidity values ​​detected by the first and second humidity sensors;

[0017] A comparison unit, used for comparing the set humidity value of the two humidity sensors with the detected humidity value when the dryness level needs to be reached;

[0018] and a control unit, which is used to control the distance between the heating plate in the oven and the filter material when the distance between the heating plate in the oven and the filter material needs to be adjusted.

[0019] The specific control method is as follows: S1, the heating plate in the oven is turned on for heating and is close to the filter material. During the T1 time period, the current humidity is recorded by the control unit;

[0020] S2, setting the absolute humidity value of the first humidity sensor when adjusting the distance between the heating plate and the filter material to W1 and W2, the W1 value is the critical point of the change between damp and wet, and the W2 value is the critical point of the change between dry and wet;

[0021] S3, within the T2 time period, the first humidity sensor continuously or intermittently detects and collects the current ambient humidity in the oven, and the detected relative humidity value is W, and the detection value W is compared with the W1 value and the W2 value respectively through the comparison unit to determine whether W is greater than W1. If so, continue monitoring to maintain the initial distance between the heating plate and the filter material; if not, determine whether W is between the W1 and W2 values. If so, determine that the absolute humidity has reached the size at which the distance between the heating plate and the filter material needs to be adjusted, and enter the next relative humidity test step; if not, determine that the W value is less than the W2 value, and determine that the absolute humidity has reached the value at which the distance between the heating plate and the filter material needs to be adjusted. As the humidity decreases, it is necessary to keep the heating plate away from the filter material, and enter the next relative humidity test step;

[0022] S4, the second humidity sensor performs a calibration test on the relative humidity. At this time, the relative humidity detected by the humidity sensor is W0, and the W value is compared with the W0 value through a comparison module in the humidity controller;

[0023] S5, determine whether the W value is the same as the W0 value. If so, first detect the distance between the current heating plate and the filter material, and then adjust the distance between the current heating plate and the filter material through the control unit according to the range of the W value and gradually move away from the filter material, and drive the filter material to the next drying section through the winding roller; if not, continue to execute the command of the existing distance between the heating plate and the filter material;

[0024] S6. Repeat steps S3-S5.

[0025] The present invention is further configured as follows: the humidity controller also includes a processing environment recording unit, which is configured to record the processing environment temperature and humidity, record the changes in the current temperature and humidity of the processing environment, and use the current processing environment as a reference for humidity changes.

[0026] The present invention is further configured as follows: the control method requiring the intervention of the processing environment recording unit is as follows, the temperature controller further includes a timing unit, the timing unit is used to record the time when the second humidity sensor is in the relative humidity detection state, S7, when the time when the timing unit records that the second humidity sensor is in the relative humidity detection state is T, the processing environment recording unit needs to intervene;

[0027] S8, the timing unit records in real time the time that the humidity sensor is in the relative humidity detection state as T1. If T1 is greater than T, it is determined that the probe of the humidity sensor is continuously in a damp or wet state, and the probe may be in a condensed state due to the current low temperature of the environment. At this time, the processing environment recording unit intervenes;

[0028] S9. The processing environment recording unit screens the current processing environment. If it is in a low temperature or high humidity environment, the relative humidity is monitored at a certain stage. If it is not in a low temperature or high humidity environment, the humidity sensor needs to be manually inspected.

[0029] S10. Loop steps S7-S9.

[0030] The present invention is further configured as follows: when the timing unit is also set to record the time when the second humidity sensor is in the relative humidity detection state as Tp, hot air is required to remove the condensation state. In step S9, the timing unit continues to record the time when the second humidity sensor is in the relative humidity detection state as T2. When the T2 time is greater than Tp, the control unit needs to start the hot air system to defrost the condensation state.

[0031] The present invention is further configured such that when the first humidity sensor detects that the absolute humidity reaches a condition where the distance between the heating plate and the filter material needs to be adjusted, the relative humidity is detected within 10 seconds and it is determined whether there is a humidity difference.

[0032] By adopting the above technical solution, the present invention adopts the first humidity sensor and the second humidity sensor, takes the second humidity sensor as the humidity detection of the external environment as the standard, and uses the first humidity sensor to detect the humidity in the oven in real time. Along with the exhaust of hot and humid air from the oven, the change of humidity is accelerated until it is close to the humidity of the environment, thereby achieving the drying effect on the filter material. The use effect is good and the structure is simple. Moreover, by setting the absolute humidity values ​​of the first humidity sensor to W1 and W2, the W1 value is the critical point of the change between moisture and wetness, and the W2 value is the critical point of the change between dryness and moisture, when the first humidity sensor continuously or intermittently detects and collects the current The ambient humidity in the oven is measured, and the detected relative humidity value is W, and the detected value W is compared with the W1 value and the W2 value respectively through the comparison unit to determine whether W is greater than W1. If so, continue monitoring and maintain the initial distance between the heating plate and the filter material; if not, determine whether W is between the W1 and W2 values. If so, determine that the absolute humidity has reached the value at which the distance between the heating plate and the filter material needs to be adjusted, and enter the next relative humidity inspection step; if not, determine that the W value is less than the W2 value, and determine that the absolute humidity has reached the value at which the distance between the heating plate and the filter material needs to be adjusted, then the drying effect of the filter material can be achieved according to the change in humidity, with strong practicality and simple structure;

[0033] In order to improve the drying accuracy, the ambient temperature and humidity are recorded through the second humidity sensor, so that the current ambient humidity can be ensured when making comparisons to avoid the phenomenon of not drying the filter material. If the ambient humidity is high, the heating time of the heating plate can be controlled according to the set humidity, which greatly improves practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The present invention is a flow chart of an embodiment of an assembly line filter material drying oven and a control method thereof.

[0035] Figure 2 The present invention is a schematic diagram of a flow oven structure of an assembly line filter material drying oven and a control method thereof according to an embodiment of the present invention.

[0036] Figure 3 It is a structural schematic diagram of an elastic structure and a width adjustment structure of an assembly line filter material drying oven and a control method thereof according to an embodiment of the present invention.

[0037] The reference numerals in the figure are as follows: 1, frame; 2, oven; 10, winding and traction roller; 11, filter material; 20, transmission channel; 21, heating plate; 201, long guide rail; 30, covering frame; 31, driving cylinder; 301, slideway; 302, elastic member; 303, support member; 304, support plate; 40, adjustment seat; 41, second drive; 5, intermediate reference plate. DETAILED DESCRIPTION

[0038] Reference Figures 1 to 3 The present invention further describes an assembly line filter material drying oven and a control method thereof.

[0039] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0040] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0041] A pipeline filter material drying oven comprises a frame 1, an oven 2 arranged on the frame 1, feed ports respectively arranged on both sides of the oven 2 and a winding and traction roller 10, wherein a transmission channel 20 is provided on the frame 1 and the transmission channel 20 is located in the middle of the oven 2 and outputs to one side of the winding and traction roller 10, wherein the oven 2 comprises a plurality of groups of heating plates 21 respectively arranged on the upper and lower sides of the transmission channel 20, a first driver for driving the heating plates 21 to approach or move away from the filter material 11, and an extrusion mechanism arranged on the transmission channel, wherein the extrusion mechanism is used to squeeze the water in the filter material 11, and the transmission channel is composed of two long guide rails 201 arranged horizontally and in parallel.

[0042] The present invention adopts a transmission channel 20, which is composed of two long guide rails 201 arranged horizontally and in parallel. The filter material 11 is clamped by the cooperation of the two long guide rails 201. In addition, the extrusion mechanism formed by the two covering frames 30 and the driving cylinder 31 arranged on the transmission channel and used to drive the covering frame 30 to extrude and reset toward the middle can accelerate the movement of water molecules in the filter material 11 when the filter material 11 is dried, thereby accelerating the drying. In order to reduce the rigid damage to the filter material 11, the elastic structure is used to increase the damage to the filter material 11 during the extrusion pressure, thereby greatly improving the practicality and having a simple structure.

[0043] The present invention is further configured such that the extrusion mechanism includes two covering frames 30 arranged on the inner side walls of the transmission channel 20, a driving cylinder 31 arranged on the transmission channel and used to drive the covering frames 30 to be extruded toward the middle and reset, and an elastic structure arranged on the inner wall of the covering frame 30, the elastic structure includes a plurality of slideways 301 arranged on the inner wall of the covering frame 30, elastic members 302 on both sides slidably arranged on the slideways 301, a support member 303 connecting the two elastic members 302 in sequence, and a support plate 304 arranged on the support member 303 and in contact with the side of the filter material 11, the support member 303 is configured to squeeze the elastic member 302 when subjected to force; and reset by the elastic force of the elastic member 302 when not subjected to force. In the present invention, the elastic structure is configured to include a plurality of slideways 301 arranged on the inner wall of the covering frame 30, elastic members 302 on both sides slidably arranged on the slideways 301, a support member 303 connecting the two elastic members 302 in sequence, and a support plate 304 arranged on the support member 303 and in contact with the side of the filter material 11. The support member 303 is configured to squeeze the elastic member 302 when subjected to force; when not subjected to force, it is reset by the elastic force of the elastic member 302. Through the slideway 301 structure, the elastic member 302, the support member 303 and the support plate 304 structure, the elastic member 302 slides on the slideway 301 structure, and the elastic member 302 squeezes the elastic member 302 when the support member 303 is compressed, thereby achieving the effect of elastic support. When the support member 303 loses its force, the elastic member 302 exerts a reverse force to achieve the effect of elastic reset. The support plate 304 structure is for the overall force area to improve the overall stability.

[0044] The present invention is further configured that the transmission channel is also provided with a width adjustment structure for conveying filter materials 11 of different widths, the width adjustment structure includes an adjustment seat 40 respectively arranged on the two long guide rails 201 and placed on the outer side of the long guide rails 201, a second driver 41 connected to the adjustment seat 40 and used to drive the long guide rails 201 to move and form an increase or decrease in the width of the transmission channel 20, and a distance controller for controlling the second driver 41 to adjust the position of the long guide rails 201. Further, by further providing the transmission channel with a width adjustment structure for conveying filter materials 11 of different widths, the width The adjustment structure includes an adjustment seat 40 respectively arranged on the two long guide rails 201 and placed on the outside of the long guide rails 201, a second driver 41 connected to the adjustment seat 40 and used to drive the long guide rails 201 to move and form an increase or decrease in the width of the transmission channel 20, and a distance controller for controlling the second driver 41 to adjust the position of the long guide rails 201. With the above-mentioned structural setting, the overall structural stability is strong and the structure is relatively simple. The distance controller can control the center line position of the filter material 11 and the transmission channel, so that after determining the center line position, the control of the loading position can be increased, and it is highly practical.

[0045] The present invention is further configured such that an intermediate reference plate 5 is provided in the oven 2 for cooperating with the distance controller to adjust the center position of the filter material 11. The specific control method of the distance control is as follows: after the filter material 11 enters the conveying channel 20, the distance controller detects the distances D1 and D2 between the two sides of the filter material 11 and the intermediate reference plate 5 respectively through the distance sensor, detects the distances D3 and D4 between the two long rails and the intermediate reference plate 5 respectively, and sends a signal to the distance controller. The distance controller compares the displacement L=D2+|(D1-D2)| / 2 and the displacement L1=D4+|(D3-D4)| / 2. If the displacement L>the displacement L1 or the displacement L<the displacement L1, it indicates that the center line of the filter material 11 deviates from the center line of the conveying channel 20, and it is necessary to drive the second driver 41 to adjust the two long guide rails 201; until the displacement L=the displacement L1.

[0046] By adopting the above technical scheme, in order to improve the confirmation of the feeding position of the transmission channel 20 and the filter material 11, an intermediate reference plate 5 is set, and the above control method is used to take the intermediate reference plate 5 as the reference. Then the distance controller detects the distances D1 and D2 between the two sides of the filter material 11 and the intermediate reference plate 5 respectively through the distance sensor, detects the distances D3 and D4 between the two long rails and the intermediate reference plate 5 respectively, and sends the signal to the distance controller. The distance controller compares the displacement L=D2+|(D1-D2)| / 2 and the displacement L1=D4+|(D3-D4)| / 2. If the displacement L>displacement L1 or the displacement L<displacement L1, it indicates that the center line of the filter material 11 deviates from the center line of the transmission channel 20, and it is necessary to drive the second driver 41 to adjust the two long guide rails 201; until the displacement L=displacement L1, thereby realizing the determination of the center line of the filter material 11 and the transmission channel 20, and then determining the feeding position, achieving good structural stability, strong practicality and simple structure.

[0047] A control method applicable to the above-mentioned assembly line filter material 11 oven 2, wherein the oven 2 is provided with a humidity controller and first and second humidity sensors electrically connected to the humidity controller, wherein the first humidity sensor is installed in the oven 2, and the second humidity sensor is installed in the environment outside the oven 2 of the oven 2, wherein the humidity controller automatically adjusts the distance change between the heating plate 21 in each oven 2 and the filter material 11 according to the humidity change of the environment outside the oven 2, so as to ensure that the actual dynamic demand of baking to the set drying degree within the fixed drying time is met;

[0048] According to the absolute humidity monitored by the first humidity sensor, i.e., the humidity in the oven 2, and the relative humidity monitored by the second humidity sensor, i.e., the humidity of the environment outside the oven 2, the distance between the heating plate 21 and the filter material 11 is automatically adjusted in combination with the monitoring structures of the two. The humidity controller includes a receiving unit for receiving the humidity values ​​detected by the first and second humidity sensors;

[0049] A comparison unit, used for comparing the set humidity value of the two humidity sensors with the detected humidity value when the dryness level needs to be reached;

[0050] and a control unit, which is used to control the distance between the heating plate 21 in the oven 2 and the filter material 11 when the distance between the heating plate 21 in the oven 2 and the filter material 11 needs to be adjusted,

[0051] The specific control method is as follows: S1, the heating plate 21 in the oven 2 is turned on for heating and is close to the filter material 11, and within the T1 time period, the current humidity is recorded by the control unit;

[0052] S2, setting the absolute humidity value of the first humidity sensor when adjusting the distance between the heating plate 21 and the filter material 11 to W1 and W2, the W1 value is the critical point of the change between damp and wet, and the W2 value is the critical point of the change between dry and wet;

[0053] S3, within the T2 time period, the first humidity sensor continuously or intermittently detects and collects the current ambient humidity in the oven 2, and the detected relative humidity value is W, and the detection value W is compared with the W1 value and the W2 value respectively through the comparison unit to determine whether W is greater than W1. If so, continue monitoring to maintain the initial distance between the heating plate 21 and the filter material 11; if not, determine whether W is between the W1 and W2 values. If so, determine that the absolute humidity has reached the size at which the distance between the heating plate 21 and the filter material 11 needs to be adjusted, and enter the next relative humidity inspection step; if not, determine that the W value is less than the W2 value, and determine that the absolute humidity has reached the value at which the distance between the heating plate 21 and the filter material 11 needs to be adjusted. As the humidity decreases, it is necessary to keep the heating plate 21 away from the filter material 11, and enter the next relative humidity inspection step;

[0054] S4, the second humidity sensor performs a calibration test on the relative humidity. At this time, the relative humidity detected by the humidity sensor is W0, and the W value is compared with the W0 value through a comparison module in the humidity controller;

[0055] S5, determine whether the W value is the same as the W0 value. If so, first detect the distance between the current heating plate 21 and the filter material 11, and then adjust the distance between the current heating plate 21 and the filter material 11 through the control unit according to the range of the W value and gradually move away from the filter material 11, and drive the filter material 11 to the next drying section through the winding roller; if not, continue to execute the command of the distance between the existing heating plate 21 and the filter material 11;

[0056] S6. Repeat steps S3-S5.

[0057] The present invention is further configured as follows: the humidity controller also includes a processing environment recording unit, which is configured to record the processing environment temperature and humidity, record the changes in the current temperature and humidity of the processing environment, and use the current processing environment as a reference for humidity changes.

[0058] The present invention is further configured as follows: the control method requiring the intervention of the processing environment recording unit is as follows, the temperature controller further includes a timing unit, the timing unit is used to record the time when the second humidity sensor is in the relative humidity detection state, S7, when the time when the timing unit records that the second humidity sensor is in the relative humidity detection state is T, the processing environment recording unit needs to intervene;

[0059] S8, the timing unit records in real time the time that the humidity sensor is in the relative humidity detection state as T1. If T1 is greater than T, it is determined that the probe of the humidity sensor is continuously in a damp or wet state, and the probe may be in a condensed state due to the current low temperature of the environment. At this time, the processing environment recording unit intervenes;

[0060] S9. The processing environment recording unit screens the current processing environment. If it is in a low temperature or high humidity environment, the relative humidity is monitored at a certain stage. If it is not in a low temperature or high humidity environment, the humidity sensor needs to be manually inspected.

[0061] S10. Loop steps S7-S9.

[0062] The present invention is further configured as follows: when the timing unit is also set to record the time when the second humidity sensor is in the relative humidity detection state as Tp, hot air is required to remove the condensation state. In step S9, the timing unit continues to record the time when the second humidity sensor is in the relative humidity detection state as T2. When the T2 time is greater than Tp, the control unit needs to start the hot air system to defrost the condensation state.

[0063] The present invention is further configured such that when the first humidity sensor detects that the absolute humidity reaches a condition where the distance between the heating plate 21 and the filter material 11 needs to be adjusted, the relative humidity detection is completed within 10 seconds, and it is determined whether there is a humidity difference.

[0064] By adopting the above technical solution, the present invention adopts the first humidity sensor and the second humidity sensor, takes the second humidity sensor as the humidity detection of the external environment as the standard, and uses the first humidity sensor to detect the humidity in the oven 2 in real time. Along with the discharge of hot and humid air by the oven 2, the change of humidity is accelerated until it is close to the humidity of the environment, thereby achieving the drying effect on the filter material 11. The use effect is good, the structure is simple, and by setting the absolute humidity values ​​of the first humidity sensor to W1 and W2, the W1 value is the critical point of the change between moisture and humidity, and the W2 value is the critical point of the change between dryness and moisture, the first humidity sensor is used to continuously or intermittently detect and collect the current humidity in the oven 2. The ambient humidity is determined, and the detected relative humidity value is W, and the detected value W is compared with the W1 value and the W2 value respectively through the comparison unit to determine whether W is greater than W1. If so, continue monitoring and maintain the initial distance between the heating plate 21 and the filter material 11; if not, determine whether W is between the W1 and W2 values. If so, determine that the absolute humidity has reached the value that requires adjusting the distance between the heating plate 21 and the filter material 11, and enter the next relative humidity inspection step; if not, determine that the W value is less than the W2 value, and determine that the absolute humidity has reached the value that requires adjusting the distance between the heating plate 21 and the filter material 11, then the drying effect of the filter material 11 can be achieved according to the change of humidity, and the practicality is strong and the structure is simple;

[0065] In order to improve the drying accuracy, the ambient temperature and humidity are recorded in the second humidity sensor, so that the current ambient humidity can be ensured when making comparisons to avoid the phenomenon of not drying the filter material 11. If the ambient humidity is high, the heating time of the heating plate 21 can be controlled according to the set humidity, which greatly improves practicality.

[0066] When the timing unit is also set to record the time when the second humidity sensor is in the relative humidity detection state as Tp, hot air is needed to remove the condensation state. In step S9, the timing unit continues to record the time when the second humidity sensor is in the relative humidity detection state as T2. When the T2 time is greater than Tp, the control unit needs to start the hot air system to defrost the condensation state. The present invention can dry the second humidity sensor by connecting the hot and humid air outlet, but it should be noted that when the second humidity sensor is frozen, the humidity detected by the second humidity sensor can no longer be used as the detection standard.

[0067] In the embodiment of the present invention, the second humidity sensor is used as a reference to ensure that after drying, the burden of drying is reduced under the criterion of ambient humidity, while also increasing the efficiency of drying.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for an assembly line filter material drying oven, comprising a frame (1), an oven (2) arranged on the frame (1), feed ports and a winding and traction roller (10) respectively arranged on both sides of the oven (2), characterized in that: The oven (2) is provided with a humidity controller and first and second humidity sensors electrically connected to the humidity controller, the first humidity sensor being installed in the oven (2), and the second humidity sensor being installed in the environment outside the oven (2). The humidity controller automatically adjusts the distance between the heating plate (21) and the filter material (11) in each oven (2) according to the humidity change of the environment outside the oven (2), so as to ensure that the drying is performed to the set drying degree within the actual dynamic demand of the fixed drying time. According to the absolute humidity monitored by the first humidity sensor, i.e., the humidity inside the oven (2), and the relative humidity monitored by the second humidity sensor, i.e., the humidity of the environment outside the oven (2), the distance between the heating plate (21) and the filter material (11) is automatically adjusted in combination with the monitoring structure of the two, and the humidity controller includes a receiving unit for receiving the humidity values ​​detected by the first and second humidity sensors; A comparison unit, used for comparing the set humidity value of the two humidity sensors with the detected humidity value when the dryness level needs to be reached; and a control unit for controlling the distance between the heating plate (21) in the oven (2) and the filter material (11) when the distance between the heating plate (21) in the oven (2) and the filter material (11) needs to be adjusted, The specific control method is as follows: S1, the heating plate (21) in the oven (2) is turned on for heating and is close to the filter material (11), and within a time period T1, the current humidity is recorded by the control unit; S2, setting the absolute humidity values ​​of the first humidity sensor when adjusting the distance between the heating plate (21) and the filter material (11) to be W1 and W2, wherein the W1 value is the critical point of the change between dampness and wetness, and the W2 value is the critical point of the change between dryness and wetness; S3, within the T2 time period, the first humidity sensor continuously or intermittently detects and collects the current ambient humidity in the oven (2), and the detected relative humidity value is W, and the detection value W is compared with the W1 value and the W2 value respectively through the comparison unit to determine whether W is greater than W1. If so, continue monitoring and maintain the initial distance between the heating plate (21) and the filter material (11); if not, determine whether W is between the W1 and W2 values. If so, determine that the absolute humidity has reached the value at which the distance between the heating plate (21) and the filter material (11) needs to be adjusted, and enter the next relative humidity test step; if not, determine that the W value is less than the W2 value, and determine that the absolute humidity has reached the value at which the distance between the heating plate (21) and the filter material (11) needs to be adjusted. As the humidity decreases, it is necessary to keep the heating plate (21) away from the filter material (11), and enter the next relative humidity test step; S4, the second humidity sensor performs a calibration test on the relative humidity. At this time, the relative humidity detected by the humidity sensor is W0, and the W value is compared with the W0 value through a comparison module in the humidity controller; S5, determining whether the W value is the same as the W0 value, if so, first detecting the distance between the current heating plate (21) and the filter material (11), then adjusting the distance between the current heating plate (21) and the filter material (11) according to the range of the W value through the control unit and gradually moving away from the filter material (11), and driving the filter material (11) to enter the next drying stage through the winding roller; if not, continuing to execute the command of the distance between the heating plate (21) and the filter material (11); S6, looping steps S3-S5; The humidity controller further comprises a processing environment recording unit, which is configured to record the processing environment temperature and humidity, record the changes in the current temperature and humidity of the processing environment, and use the current processing environment as a reference for humidity changes; The control method requiring the intervention of the processing environment recording unit is as follows: the temperature controller further includes a timing unit, the timing unit is used to record the time when the second humidity sensor is in the relative humidity detection state, S7, setting the time when the timing unit records that the second humidity sensor is in the relative humidity detection state as T, and the processing environment recording unit needs to intervene; S8, the timing unit records in real time the time that the humidity sensor is in the relative humidity detection state as T1. If T1 is greater than T, it is determined that the probe of the humidity sensor is continuously in a damp or wet state, and the probe may be in a condensed state due to the current low temperature of the environment. At this time, the processing environment recording unit intervenes; S9. The processing environment recording unit screens the current processing environment. If it is in a low temperature or high humidity environment, the relative humidity is monitored at a certain stage. If it is not in a low temperature or high humidity environment, the humidity sensor needs to be manually inspected. S10, looping steps S7-S9; The timing unit is also set to record that when the time the second humidity sensor is in the relative humidity detection state is Tp, hot air is required to remove the condensation state. In step S9, the timing unit continues to record the time the second humidity sensor is in the relative humidity detection state as T2. When the T2 time is greater than Tp, the control unit needs to start the hot air system to defrost the condensation state.

2. The control method of a pipeline filter material drying oven according to claim 1, characterized in that: When the first humidity sensor detects that the absolute humidity reaches a condition where the distance between the heating plate (21) and the filter material (11) needs to be adjusted, the detection of the relative humidity is completed within 10 seconds, and it is determined whether there is a humidity difference.

3. An oven (2) applicable to the control method of the assembly line filter material oven according to any one of claims 1 to 2, characterized in that: The frame (1) is also provided with a transmission channel (20), and the transmission channel (20) is placed in the middle of the oven (2) and outputs to one side of the winding and traction roller (10). The oven (2) comprises a plurality of groups of heating plates (21) respectively arranged on the upper and lower sides of the transmission channel (20), a first driver for driving the heating plates (21) to approach or move away from the filter material (11), and an extrusion mechanism arranged on the transmission channel, the extrusion mechanism being used to squeeze the water in the filter material (11). The transmission channel is composed of two long guide rails (201) arranged horizontally and in parallel.

4. The assembly line filter material drying oven according to claim 3, characterized in that: The extrusion mechanism comprises two covering frames (30) arranged on the inner side walls of the transmission channel (20), a driving cylinder (31) arranged on the transmission channel and used for driving the covering frames (30) to be extruded toward the middle and reset, and an elastic structure arranged on the inner wall of the covering frames (30).

5. The assembly line filter material drying oven according to claim 4, characterized in that: The elastic structure comprises a plurality of slideways (301) arranged on the inner wall of the covering frame (30), two elastic members (302) slidably arranged on the slideways (301), a support member (303) connecting the two elastic members (302) in sequence, and a support plate (304) arranged on the support member (303) and in contact with the side of the filter material (11). The support member (303) is configured to squeeze the elastic member (302) when a force is applied; and to reset the elastic member (302) when no force is applied.

6. The assembly line filter material drying oven according to claim 3, characterized in that: The transmission channel is also provided with a width adjustment structure for conveying filter materials (11) of different widths, the width adjustment structure comprising adjustment seats (40) respectively arranged on the two long guide rails (201) and placed on the outside of the long guide rails (201), a second driver (41) connected to the adjustment seat (40) and used for driving the long guide rails (201) to move and increase or decrease the width of the transmission channel (20), and a distance controller for controlling the second driver (41) to adjust the position of the long guide rails (201).

7. The assembly line filter material drying oven according to claim 6, characterized in that: The oven (2) is provided with an intermediate reference plate (5) for cooperating with a distance controller to adjust the center position of the filter material (11). The specific control method of the distance control is as follows: after the filter material (11) enters the conveying channel (20), the distance controller detects the distances D1 and D2 between the two sides of the filter material (11) and the intermediate reference plate (5) respectively through the distance sensor, detects the distances D3 and D4 between the two long rails and the intermediate reference plate (5) respectively, and sends a signal to the distance controller. The distance controller compares the displacement L=D2+|(D1-D2)| / 2 and the displacement L1=D4+|(D3-D4)| / 2. If the displacement L>the displacement L1 or the displacement L<the displacement L1, it indicates that the center line of the filter material (11) deviates from the center line of the conveying channel (20), and it is necessary to drive the second driver (41) to adjust the two long guide rails (201); until the displacement L=the displacement L1.

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