CN217826711U - Moisture adjusting device of tobacco shred damping machine and tobacco shred damping machine - Google Patents

Abstract

The utility model discloses a moisture regulating device for shredded tobacco dampening machine, which comprises a water pipe, the first end of which is connected with a water source; a first steam pipe, whose first end is connected with a steam source; a second steam pipe, whose second end is connected with a water source Tobacco dampening machine connection; heat exchanger, the water inlet of the heat exchanger is connected with the second end of the water pipe, the steam inlet of the heat exchanger is connected with the second end of the first steam pipe, and the steam outlet of the heat exchanger is connected with the second end of the first steam pipe. The first ends of the two steam pipes are connected, and the saturated steam in the first steam pipe is converted into unsaturated steam through a heat exchanger and then output to the shredded tobacco dampening machine through the second steam pipe; the first regulating valve is arranged between the second steam pipe and Between shredded tobacco dampening machines, it is used to adjust the flow rate of the unsaturated steam output by the second steam pipeline. The device can realize the precise control of the moisture in the shredded tobacco dampening machine. The utility model also discloses a shredded tobacco dampening machine, which comprises the moisture regulating device of the shredded tobacco dampening machine.

Description

A shredded tobacco moistening machine moisture regulating device and tobacco shredded dampening machine

technical field

The utility model relates to the technical field of shredded tobacco, in particular to a moisture regulating device for a shredded tobacco dampening machine and a shredded tobacco dampening machine.

Background technique

Tobacco dampening machine is mainly used to heat, humidify and expand the cut tobacco in the cutting production line to improve the filling rate of cut tobacco. process conditions. After the shreds enter the moisture resurfacing machine, under the action of mechanical rolling and saturated steam injection, they tumble and roll sharply, fully mix and contact with the steam, and absorb a large amount of heat energy, so that the moisture on the surface of the shreds penetrates into the interior of the shreds, which plays a role in heating and humidifying. The function of promoting the softening of the shredded tobacco; at the same time, it continuously absorbs water from the surrounding hot steam, and the evaporation and vaporization are repeated continuously, so that the volume of the shredded wood fiber is highly expanded, forming shredded tobacco with a moisture content that meets a certain requirement, and then through the subsequent drying of shredded tobacco The process forms dry and fluffy cut tobacco.

Among them, the moisture content of the shredded tobacco expanded by the shredded tobacco rejuvenating machine will affect the subsequent shredded drying process, and the change of the moisture content of the shredded shredded tobacco after expansion will cause fluctuations in the temperature of the tube wall in the shredded shredded drying process, which in turn will affect the quality of shredded tobacco. The moisture content of the shredded tobacco expanded by the humidifier is controlled within a certain reasonable range. The amount of water added to the shredded tobacco dampening machine directly determines the moisture content of the shredded tobacco after expansion, so it is necessary to precisely control the amount of water added to the shredded tobacco dampening machine.

Utility model content

The purpose of the utility model is to provide a device capable of accurately adjusting the amount of water added to the shredded tobacco dampening machine, which can accurately add water during the expansion process of the shredded tobacco so that the moisture content of the shredded tobacco reaches a reasonable range after expansion.

In order to solve the above technical problems, the embodiment of the utility model discloses a moisture regulating device for shredded tobacco humidifier, including:

A water pipeline, the first end of which is connected to a water source;

a first steam pipeline, the first end of which is connected to a steam source;

The second steam pipeline, the second end of which is connected to the shredded tobacco dampening machine;

The heat exchanger, the water inlet of the heat exchanger is connected with the second end of the water pipe, the steam inlet of the heat exchanger is connected with the second end of the first steam pipe, and the steam outlet of the heat exchanger is connected with the second end of the second steam pipe. One end is connected, the saturated steam in the first steam pipeline is converted into unsaturated steam through a heat exchanger, and then output to the shredded tobacco dampening machine through the second steam pipeline;

The first regulating valve is arranged between the second steam pipeline and the shredded tobacco dampening machine, and is used for adjusting the flow rate of the unsaturated steam output by the second steam pipeline.

Using the above technical scheme, the cooling water jacket system is formed by adding water pipelines and heat exchangers, so that the saturated steam can be converted into unsaturated steam after passing through, and then the unsaturated steam can be used as the main source of water for the shredded tobacco reconditioning machine, realizing a small flow rate Add water; and the utility model can also adjust the flow rate of unsaturated steam input into the shredded tobacco dampening machine through the first regulating valve, so as to realize the precise control of the moisture in the shredded tobacco dampening machine.

Optionally, in the moisture regulating device of the shredded tobacco humidifier provided in the embodiment of the present invention, a control device is further included, which is connected with the first regulating valve and used to control the opening degree of the first regulating valve.

Optionally, in the moisture regulating device of the shredded tobacco humidifier provided in the embodiment of the present invention, it also includes:

The inlet moisture detector is set near the inlet of the shredded tobacco humidifier, and is used to detect the moisture of the shredded tobacco at the inlet;

The outlet moisture detector is installed near the output port of the shredded tobacco reconditioning machine, and is used to detect the moisture of the shredded tobacco at the outlet;

Both the inlet moisture detector and the outlet moisture detector are connected to the control device, and are used to transmit the detected inlet and outlet tobacco moisture to the control device;

The control device adjusts the opening degree of the first regulating valve according to the moisture content of the inlet shredded tobacco and the moisture content of the outlet shredded tobacco.

Optionally, in the moisture regulating device of the shredded tobacco dampening machine provided in the embodiment of the present invention, it further includes: a second regulating valve, arranged on the water delivery pipeline, for adjusting the water flow in the water delivery pipeline;

The control device is also connected with the second regulating valve, and the control device is also used for adjusting the opening degree of the second regulating valve according to the moisture content of the outlet shredded tobacco and the opening degree of the first regulating valve.

Optionally, in the moisture regulating device for shredded tobacco humidifier provided in the embodiment of the present invention, the first regulating valve is a Samson regulating valve, and/or the second regulating valve is a proportional regulating valve.

Optionally, in the moisture regulating device of the shredded tobacco dampening machine provided by the embodiment of the present invention, a third regulating valve is further arranged on the water delivery pipeline for adjusting the water flow in the water delivery pipeline.

Optionally, in the moisture regulating device of the shredded tobacco humidifier provided in the embodiment of the present invention, the third regulating valve includes:

The housing has a cavity inside, and the housing is provided with inlets and outlets arranged at intervals along the first direction;

The first regulating valve rod has a mounting hole and a regulating hole arranged on the side wall of the mounting hole, and the mounting hole runs through the first regulating valve rod;

The first regulating valve rod is at least partially accommodated in the cavity, and can move between the first position and the second position in the cavity, and the installation hole communicates with the cavity; when the first regulating valve rod is in the first position, The regulating hole is connected to the outlet and the outlet is isolated from the cavity. When the first regulating valve stem is in the second position, the inlet, the outlet and the cavity are connected;

The second regulating valve rod is slidably arranged in the installation hole.

Optionally, in the moisture regulating device for shredded tobacco humidifier provided in the embodiment of the present invention, the cavity includes a first cavity and a second cavity arranged in sequence along the first direction, and the first cavity and the second cavity are both It is cylindrical, and the diameter of the first cavity is larger than the diameter of the second cavity.

Optionally, in the moisture regulating device of the shredded tobacco humidifier provided in the embodiment of the present invention, the first regulating valve stem includes:

main body;

The adjustment part is in the shape of a truncated cone and is arranged at the lower end of the main body. The diameter of the bottom end of the adjustment part is smaller than the diameter of the second cavity, and the diameter of the top end of the adjustment part is larger than the diameter of the second cavity.

Optionally, in the moisture regulating device of the shredded tobacco humidifier provided in the embodiment of the present invention, a third steam pipe is also included, the first end of which is connected to the steam source, and the second end of which is connected to the second end of the second steam pipe .

Correspondingly, the embodiment of the utility model also provides a shredded tobacco dampening machine, including the above-mentioned moisture adjusting device for shredded tobacco dampening machine.

Correspondingly, the embodiment of the utility model also provides a method for adjusting the moisture content of the shredded tobacco dampening machine, including:

A heat exchanger, a first regulating valve and a second regulating valve are provided, wherein, the water inlet of the heat exchanger is connected with a water pipeline, the steam inlet of the heat exchanger is connected with a steam source, and the first regulating valve is arranged at the Between the steam outlet and the shredded tobacco dampening machine, the second regulating valve is set on the water pipeline;

setting the second regulating valve at the first opening degree;

The saturated steam from the steam source is converted into unsaturated steam through the heat exchanger, and the unsaturated steam is output to the shredded tobacco dampening machine after passing through the first regulating valve;

Separately collect the inlet cut tobacco moisture and the outlet cut tobacco moisture of the shredded tobacco reconditioning machine;

Control the opening of the first regulating valve according to the moisture content of the inlet shredded tobacco and the moisture content of the outlet shredded tobacco to adjust the flow rate of the unsaturated steam;

The opening degree of the first regulating valve is acquired, and the opening degree of the second regulating valve is controlled according to the moisture content of the outlet shredded tobacco and the opening degree of the first regulating valve to control the water content of the unsaturated steam.

Optionally, in the method for adjusting the moisture content of the shredded tobacco humidifier provided in the embodiment of the present invention, the opening degree of the first regulating valve is obtained, and the opening degree of the second regulating valve is controlled according to the moisture content of the outlet shredded tobacco and the opening degree of the first regulating valve. Controlling the moisture content of unsaturated steam includes:

Comparing the outlet shredded tobacco moisture with the first moisture threshold and the second moisture threshold, if the outlet shredded tobacco moisture is less than the first moisture threshold or the outlet tobacco moisture is greater than the second moisture threshold, the opening of the second regulating valve is set to 0;

Otherwise, acquire the opening degree of the first regulating valve, and compare the acquired opening degree of the first regulating valve with the first opening degree threshold and the second opening degree threshold;

If the collected opening of the first regulating valve is greater than the first opening threshold, the opening of the second regulating valve is increased by 1% every interval of the first time period;

If the collected opening degree of the first regulating valve is smaller than the second opening degree threshold, the opening degree of the second regulating valve is decreased by 1% every second time period.

Optionally, in the method for adjusting the moisture content of the shredded tobacco humidifier provided in the embodiment of the present invention, at least one of the following technical characteristics is satisfied:

The first opening is 25% to 35%;

The first moisture threshold is 7%;

The second moisture threshold is 15%;

The first opening threshold is 90%;

The second opening threshold is 10%;

The first time period is 10s;

The second time period is 10s.

Description of drawings

Fig. 1 is a schematic structural view of a moisture regulating device for a shredded tobacco dampening machine provided by a specific embodiment of the present invention;

Fig. 2 is a schematic structural view of a third regulating valve provided by a specific embodiment of the present invention;

Fig. 3 is a flow chart of a method for adjusting moisture in a shredded tobacco dampening machine provided by a specific embodiment of the present invention.

Detailed ways

The implementation of the present utility model is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Although the description of the utility model will be introduced together with the preferred embodiment, it does not mean that the features of the utility model are limited to the embodiment. On the contrary, the purpose of introducing the utility model in conjunction with the embodiments is to cover other options or modifications that may be extended based on the claims of the utility model. The following description contains numerous specific details in order to provide an in-depth understanding of the present invention. The invention can also be implemented without these details. In addition, in order to avoid confusion or obscure the key points of the present invention, some specific details will be omitted in the description. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

It should be noted that in this specification, similar numerals and letters denote similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be identified in subsequent drawings. for further definition and explanation.

In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "entrance", "exit" and so on are based on the orientation or positional relationship shown in the accompanying drawings, or the conventional swing when the utility model product is used. The orientation or positional relationship is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be interpreted as a reference to the utility model. New types of restrictions.

The terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of this embodiment, it should also be noted that unless otherwise specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, Or integrally connected; it can be directly connected or indirectly connected through an intermediary; it can be mechanically connected or electrically connected. Those of ordinary skill in the art can understand the specific meanings of the above terms in this embodiment in specific situations.

In order to make the purpose, technical solutions and advantages of the utility model clearer, the implementation of the utility model will be further described in detail below in conjunction with the accompanying drawings.

Referring to Fig. 1, a specific embodiment of the present invention provides a moisture regulating device for shredded tobacco humidifier, including: heat exchanger 1, water delivery pipe 2, first steam pipe 3, second steam pipe 4 and first regulating valve 5. Specifically, the first end of the water delivery pipeline 2 is connected to the water source, the second end of the water delivery pipeline 2 is connected to the water inlet of the heat exchanger 1, the first end of the first steam pipeline 3 is connected to the residual steam source, and the first steam The second end of the pipeline 3 is connected to the steam inlet of the heat exchanger 1, the first end of the second steam pipeline 4 is connected to the steam outlet of the heat exchanger 1, and the second end of the second steam pipeline 4 is connected to the shredded tobacco humidifier, The first regulating valve 5 is arranged between the first steam pipeline 3 and the shredded tobacco dampening machine. In a specific implementation, the water in the water pipeline 3 is used as an external cooling source of the heat exchanger, so that when the saturated steam of the steam source flows through the first steam pipeline 3 to the heat exchanger 1, heat exchange is performed on the saturated steam to Convert it into unsaturated steam, and then output it through the second steam pipe 4, and adjust the flow rate of the unsaturated steam to a suitable range through the first regulating valve 5, and then send it to the shredded tobacco dampening machine, so that the moisture in the shredded tobacco dampening machine maintained within the appropriate range.

The utility model forms a cooling water jacket system by adding water pipes and heat exchangers, so that the saturated steam can be converted into unsaturated steam after passing through, and then the unsaturated steam can be used as the main source of adding water to the shredded tobacco rejuvenating machine, realizing the small flow of water; Moreover, the utility model can also adjust the flow rate of the unsaturated steam input into the shredded tobacco dampening machine through the first regulating valve, so as to realize the precise control of the moisture in the shredded tobacco dampening machine.

Exemplarily, the moisture regulating device of shredded tobacco humidifier in a specific embodiment of the present invention also includes an output pipeline 10, the first end of the output pipeline 10 is connected with the second end of the second steam pipeline 4, and the second end of the output pipeline 10 The end is connected with the shredded tobacco dampening machine for outputting the unsaturated steam in the second steam pipe 4 to the shredded tobacco dampening machine; the first regulating valve 5 is set on the output pipe 10 .

Exemplarily, the moisture regulating device of a shredded tobacco humidifier according to a specific embodiment of the present invention further includes a control device 6 . Specifically, the control device 6 is electrically connected to the first regulating valve 5 , and by controlling the opening of the first regulating valve 5 , the regulation of the unsaturated steam flow is realized.

Exemplarily, the moisture regulating device of the shredded tobacco humidifier in a specific embodiment of the present invention further includes an inlet moisture detector 7 and an outlet moisture detector 8 . Specifically, the inlet moisture detector 7 is set near the inlet of the shredded tobacco reconditioning machine for detecting the moisture of the inlet shredded tobacco; the outlet moisture detector 8 is set near the output port of the shredded tobacco moistening machine for detecting the moisture of the outlet shredded tobacco. Both the inlet moisture detector 7 and the outlet moisture detector 8 are connected with the control device 6, and are used to transmit the detected inlet shredded tobacco moisture and outlet shredded tobacco moisture to the control device 6, and the control device 6 adjusts the first moisture content according to the inlet shredded tobacco moisture and the outlet shredded tobacco moisture. A degree of opening of the regulating valve 5 .

Optionally, the inlet moisture detector 7 and the outlet moisture detector 8 can be DNC TM710e infrared cut tobacco moisture meter, which has a moisture detection parameter configuration specially for the tobacco industry, and its detection accuracy is high. Optionally, the first regulating valve 5 may be a Samson regulating valve, more specifically, it may be a Samson 3730-4 regulating valve.

Specifically, different brands of shredded tobacco have different moisture deviations detected by the same moisture meter, mainly due to the different colors and characteristics of different brands of shredded tobacco under infrared conditions. Therefore, the moisture detector needs to be corrected for different brands before it can be applied. Different moisture meters have different moisture detection deviations for the same brand of shredded tobacco, so corrections are also required. The correction method is to sample the shredded tobacco under the moisture detector, record the value displayed by the moisture detector at the same time, and then carry out accurate moisture detection according to the standard oven method, and then obtain the correction value of the moisture detector for this brand of shredded tobacco, and then pass the middle Control program for moisture correction. Specifically, there are two ways to perform moisture correction through the central control program, one is to directly download and enter the moisture meter, and the other is to directly perform correction in the program.

Further, since there are two physical moisture detection points available for the shredded tobacco rejuvenator, the moisture detector is generally installed at these two places, wherein the inlet moisture detector is set at the microwave outlet, and the inlet moisture detector is installed at the location. It takes 90s for the detected shredded tobacco to reach the entrance of the dampening barrel, so the value needs to be pushed back 90s on the time axis to be used as the moisture value of the shredded tobacco at the entrance of the dampening barrel. Correspondingly, the outlet moisture detector is installed at the outlet of the moisture resurgence barrel, and there is a certain distance between the outlet moisture detector and the outlet of the moisture resurgence barrel, thus causing a pure time delay. In practice, we hope to obtain It is more reasonable to use this moisture value to feed back the first regulating valve of the moisture resurgence barrel, but since it is impossible to install a moisture detection device there, the utility model adopts the historical value and current value of the moisture content of the shredded tobacco at the outlet of the moisture resurgence barrel The moisture content of cut tobacco in the moisture resurgence barrel is predicted, and the prediction is realized through extrapolation and interpolation. The predicted moisture value can participate in moisture control, which is more reasonable than directly using the moisture meter at the outlet of the moisture resurgence barrel.

Furthermore, in order to enable the control device 6 to more accurately adjust the opening of the first regulating valve 5 according to the moisture in the inlet shredded tobacco and the moisture in the outlet shredded tobacco, the utility model skillfully utilizes the PID algorithm and the Dalin algorithm, that is, the control device 6. After processing the input data of the moisture content of cut tobacco at the entrance and at the exit, the PID algorithm and the Dalin algorithm specially aimed at the time-delay object of Dachun are used for regulation and control. The advantages of their respective algorithms. Specifically, in order to ensure the accuracy of regulation and control, the switch between the Dalin algorithm and the PID algorithm in the utility model is mainly determined by the operating frequency of the dampening barrel. When the operating frequency of the shredded tobacco dampening machine is less than 30Hz or when there is a large disturbance, the Dalin algorithm is used , which is more conducive to the adjustment ability of the Dalin algorithm for the system with a pure delay; and when the operating frequency of the drum of the shredded tobacco reconditioning machine is higher than 30Hz or runs stably, the PID algorithm is used, which is more conducive to taking advantage of the PID algorithm to observe the internal operation. .

That is, by electrically connecting the inlet moisture detector 7, the outlet moisture detector 8 and the first regulating valve 5 to the control device 6, a closed-loop control is formed, so that the control device 6 can realize the first monitoring through the inlet moisture and the outlet moisture. The automatic adjustment of the regulating valve 5 further realizes the automatic and precise control of the moisture content of the shredded tobacco humidifier, which saves labor costs and avoids errors caused by human control.

Exemplarily, the moisture regulating device of the shredded tobacco dampening machine in a specific embodiment of the present invention also includes a second regulating valve 9, which is arranged on the water delivery pipeline 2, and is used to adjust the water flow in the water delivery pipeline 2; the control device 6 It is also connected with the second regulating valve 9, and the control device 6 can adjust the opening degree of the second regulating valve according to the moisture content of the outlet shredded tobacco and the opening degree of the first regulating valve 5.

In a specific implementation mentioned above, it is mainly a control algorithm for controlling the flow rate of unsaturated steam, the feedback data is the moisture meter at the outlet of the resurgence barrel, and the execution structure is a Samson regulating valve (that is, the first regulating valve 5), That is, the flow rate of the unsaturated steam is adjusted by the moisture in the inlet cut tobacco and the moisture in the outlet cut tobacco. However, another important time-varying factor of the system, that is, the water content of unsaturated steam, cannot be directly measured. Sometimes when the PID regulation output reaches 100% and is maintained for a long time, the moisture content of shredded tobacco still cannot rise to the qualified level. This phenomenon is caused by the reduction of steam moisture content, so it is necessary to be able to further automatically control the steam moisture content. Although the moisture content of the steam cannot be directly measured, and the PID algorithm and the Dalin algorithm are not applicable to the second regulating valve 9, the control objective of the PID algorithm and the Dalin algorithm is not to control the opening of the Samson regulating valve at At a certain point, it is enough to ensure that the Samson regulating valve is not kept at 100% full opening or a very low opening for a long time, so the utility model cleverly thinks of using the opening of the Samson regulating valve The algorithm for controlling the second regulating valve 9 is as follows:

When the moisture content of the outlet shredded tobacco is less than 7.0% or greater than 15.0%, it can be judged that the equipment is operating in an abnormal state, or in a state of no shredded tobacco. At this time, the opening of the second regulating valve 9 can be set to 0 to prevent the shredded tobacco from regaining moisture in the drum of the machine. Excessive moisture will cause water stains in the subsequent shredded tobacco;

When the outlet tobacco moisture is in the above reasonable range (that is, the outlet tobacco moisture is between 7.0%-15.0%), judge the opening of the Samson regulating valve. If the opening of the Samson regulating valve is greater than 90%, then every 10s , increase the opening degree of the second regulating valve 9 by 1%, if the opening degree of the Samson regulating valve is less than 10%, then decrease the opening degree of the second regulating valve 9 by 1% every 10s.

That is, the opening of the second regulating valve 9 is automatically adjusted through the moisture content of the outlet shredded tobacco and the opening of the first regulating valve 5, so as to realize the automatic adjustment of the moisture content of the unsaturated steam, and further ensure the precise control of the moisture in the shredded tobacco humidifier.

The utility model uses tap water to cool the steam in the factory area to produce unsaturated steam with a high moisture content. The water volume is controlled by the Samson regulating valve to control the steam flow to realize the closed-loop control of moisture regain and improve the moisture regain capability and control accuracy of the equipment.

Optionally, the second regulating valve 9 may be a proportional regulating valve.

Exemplarily, in the moisture regulating device of the shredded tobacco humidifier according to a specific embodiment of the present invention, the water delivery pipeline 2 is also provided with a third regulating valve 11 for adjusting the water flow in the water delivery pipeline 2 . Specifically, the purpose of setting up the third regulating valve 11 is to realize manual adjustment through the third regulating valve 11 when the second regulating valve fails, or when the control device cannot automatically adjust the water content of the unsaturated steam through the second regulating valve. The water flow on the water pipeline 2 is adjusted to realize artificial regulation of the moisture content of the unsaturated steam.

Exemplarily, as shown in FIG. 2 , the third regulating valve 11 includes a casing 111 , a first regulating valve stem 112 and a second regulating valve stem 113 , wherein the interior of the casing 111 has a cavity 1113 , and the casing 111 There are inlets 1111 and outlets 1112 arranged at intervals along the first direction (as shown in the X direction in FIG. 2 ); the first regulating valve rod 112 has a mounting hole 1121 and a regulating hole 1122 arranged on the side wall of the mounting hole 1121, The mounting hole 1121 runs through the first regulating valve rod 112 ; the second regulating valve rod 113 is slidably disposed in the mounting hole 1121 . The first adjusting valve rod 112 is at least partially accommodated in the cavity 1113, and can move between the first position and the second position in the cavity 1113. When the first adjusting valve rod 112 is in the first position, the adjusting hole 1122 It communicates with the outlet 1112 and the outlet 1112 is isolated from the cavity 1113 . When the first regulating valve stem 112 is in the second position, the inlet 1111 , the outlet 1112 and the cavity 1113 communicate.

As shown in FIG. 2 , the black single arrow in the figure represents the water flow direction, that is, the water flow enters from the inlet 1111 and flows out from the outlet 1112 . When using the third regulating valve to adjust the water flow, you can first turn the first regulating valve stem 112 up and down to adjust the flow rate to a certain suitable range, and then turn the second regulating valve stem 113 up and down to make the regulating flow rate accurate. reach the required value. The control valve has a simple structure and has two-stage adjustment capabilities of coarse adjustment and fine adjustment, which can realize precise control of water flow and can meet the adjustment requirements of large flow and high precision at the same time.

Specifically, screw threads can be provided on the inner walls of the cavity 1113 and the mounting hole 1121, and by setting the pitches of the threads in the cavity 1113 and the mounting hole 1121 reasonably, the one-to-one correspondence between the moving distance of the valve stem and the flow rate can be realized. Alternatively, there may be no additional thread, and when using the flow regulating valve provided by this embodiment, a flow meter is used in conjunction with the flow meter to realize precise adjustment of flow. Specifically, a sealing ring is provided on the cavity 1113, and the first regulating valve rod 112 is sealed and connected with the cavity 1113; a sealing ring may also be provided on the mounting hole 1121, so that the second regulating valve rod 113 is sealed and connected with the mounting hole 1121 .

Exemplarily, the installation hole 1121 may pass through the first regulating valve rod 112 along the first direction so that the installation hole 1121 communicates with the cavity 1113 . Specifically, the first regulating valve rod 112 , the second regulating valve rod 113 , the installation hole 1121 and the cavity 1113 can be coaxially arranged.

Exemplarily, the cavity 1113 includes a first cavity and a second cavity arranged in sequence along the first direction, and the size of the upper end surface of the second cavity is smaller than the size of the lower end surface of the first cavity. In this way, the first regulating valve rod 112 can move freely up and down in the first cavity, and at the same time, the bottom of the first regulating valve rod 112 can cover the second cavity, so that the outlet 1112 is isolated from the second cavity. Specifically, the first position may be located at the interface between the first cavity and the second cavity. Specifically, sealing rings may be provided at the top and bottom ends of the first cavity, and the first regulating valve rod 112 is sealingly connected with the first cavity at the top and bottom ends of the first cavity.

Exemplarily, the first cavity and the second cavity are cylindrical, and the diameter of the first cavity is larger than that of the second cavity. That is, the cavity 1113 in the housing 111 can be a stepped cavity 1113, and the size of the second cavity located at the lower part is smaller than the diameter of the first cavity located at the upper part, so as to ensure that the second regulating valve stem 113 can fully cover the second cavity The upper end face of the body isolates the outlet 1112 from the second cavity. The design is simple in structure, which saves the production cost to a certain extent.

Exemplarily, the first regulating valve stem 112 includes a main body part 1123 and a regulating part 1124 . Wherein, the adjustment part 1124 is in the shape of a truncated cone, and is arranged at the lower end of the main body part 1123. The diameter of the bottom end of the adjustment part 1124 is smaller than the diameter of the second cavity, and the diameter of the top end of the adjustment part 1124 is larger than the diameter of the second cavity. This design can make the adjustment part 1124 better abut against the upper end surface of the second cavity.

Exemplarily, the adjustment hole 1122 can be provided at the lower part of the main body 1123, the inlet 1111 and the outlet 1112 are cylindrical holes, the diameter of the adjustment hole 1122 is smaller than the diameter of the outlet 1112, specifically, the first cavity, the second cavity and The diameter of the adjustment hole 1122 can be set according to actual needs.

Exemplarily, the moisture regulating device of shredded tobacco humidifier in a specific embodiment of the present invention also includes a third steam pipeline 12, the first end of the third steam pipeline 12 is connected to the steam source, and the second end of the third steam pipeline 12 It is connected with the second end of the second steam pipe 4 .

That is, by dividing the pure steam humidification pipeline into two lines, one is a saturated steam line, and the other is through setting a heat exchanger and controlling the moisture content of the steam to convert saturated steam into unsaturated steam, and then the two lines are combined to form The steam with a certain moisture content is controlled by the Samson steam regulating valve to control the total steam flow, so as to realize the precise control of the moisture in the shredded tobacco humidifier.

Exemplarily, the first steam pipe 3 and the third steam pipe 12 are respectively provided with steam stop valves, which are used to control the on-off of the steam in the first steam pipe and the third steam pipe, and the water pipe 2 is provided with flowing water The shut-off valve is used to control the on-off of the water flow in the delivery pipeline.

The moisture regulating device of the shredded tobacco humidifier provided by the utility model solves the problem of adding water to the shredded tobacco after passing through the SP32 expanded shredded thread, especially the problem of difficult control caused by the extremely small amount of water added, by remodeling and upgrading the pipeline and updating the software control system , so that the shredded tobacco rejuvenation machine is transformed from the original semi-automatic control into a one-button start-up, which can fully automatically adjust the moisture content of the shredded tobacco, automatically adapt to the changes in the moisture content of the steam in the factory area and the moisture content of the shredded tobacco at the outlet of the discharge port, so as to improve the quality of shredded tobacco and the degree of equipment automation. The purpose of improving the environmental adaptability of the equipment factory area and reducing the number of unqualified expanded yarns. Specifically, unsaturated steam is used as the main source of adding water to the shredded tobacco reconditioning machine, which realizes water addition at a small flow rate. The Samson regulating valve is used in the control system to realize automatic and precise adjustment of the opening of the Samson regulating valve according to the moisture content of the exit/entry shredded tobacco. degree to adjust the steam flow rate input into the shredded tobacco resurfacing machine; and according to the moisture content of the inlet shredded tobacco before rehydration (that is, after microwave expansion) and the outlet shredded tobacco moisture data of the shredded tobacco after rehydration, the opening degree of the proportional regulating valve is controlled by the control device and software algorithm to realize The control of steam moisture content automatically adapts to the fluctuation of steam pressure, temperature, moisture content, etc., so as to ensure the moisture temperature of expanded tobacco.

Correspondingly, the utility model also provides a shredded tobacco dampening machine, which includes the above-mentioned moisture regulating device for the shredded tobacco dampening machine.

Correspondingly, as shown in Figure 3, the utility model also provides a method for adjusting the moisture content of the shredded tobacco humidifier, which includes the following steps:

Step S1: Provide a heat exchanger, a first regulating valve, and a second regulating valve, wherein the water inlet of the heat exchanger is connected to a water pipeline, the steam inlet of the heat exchanger is connected to a steam source, and the saturated steam of the steam source is exchanged After the heat exchanger is converted into unsaturated steam output, the first regulating valve is set between the steam outlet of the heat exchanger and the shredded tobacco humidifier to adjust the flow rate of the unsaturated steam output by the heat exchanger; the second regulating valve is set in the water delivery On the pipeline, it is used to adjust the water flow in the water pipeline to control the water content of unsaturated steam. Specifically, the first regulating valve may be a Samson regulating valve, and the second regulating valve may be a proportional regulating valve.

Step S2: Setting the second regulating valve at the first opening degree. Optionally, the first degree of opening may be 20%-35%. That is, at the initial moment, the opening degree of the second regulating valve is set at the first opening degree, and the opening degree of the second regulating valve will be adjusted in real time later according to the actual situation.

Step S3: the saturated steam from the steam source is converted into unsaturated steam through a heat exchanger, and the unsaturated steam is output to the shredded tobacco dampening machine after passing through the first regulating valve.

Step S4: collecting respectively the moisture content of the shredded tobacco at the inlet and outlet of the shredded tobacco reconditioning machine.

Specifically, moisture in the inlet shredded tobacco and moisture in the outlet shredded tobacco can be detected by a moisture detector. Further, since there are two physical moisture detection points available for the shredded tobacco moisture rejuvenator, the moisture detectors are generally installed in these two places, and one of the moisture detectors is set at the microwave outlet. Due to the installation position of the moisture detector, its detection The last shredded tobacco needs to pass through 90s to reach the entrance of the moisture resurfacing barrel, so this value needs to be pushed back 90s on the time axis to be used as the moisture value of the entrance shredded tobacco of the rehydration barrel. The other moisture detector is installed at the outlet of the moisture resurgence barrel. The moisture detector at the outlet is also a certain distance from the outlet of the moisture resurgence barrel, so it will cause a pure delay. In practice, we hope to get the inside of the moisture resurgence barrel close to the outlet. It is more reasonable to use this moisture value as the moisture content of the outlet shredded tobacco to feedback and control the first regulating valve of the moisture regain barrel, but since it is impossible to install a moisture detection device at this place, the utility model adopts the The historical value and current value of the moisture content of the outlet shredded tobacco are used to predict the moisture content of the shredded tobacco in the moisture resurgence barrel. The prediction is realized through extrapolation and interpolation. The predicted moisture value can participate in moisture control, which is more reasonable than directly using the moisture meter at the outlet of the moisture resurgence barrel.

Step S5: Control the opening degree of the first regulating valve according to the moisture content of the inlet shredded tobacco and the moisture content of the outlet shredded tobacco to adjust the flow rate of the unsaturated steam.

Specifically, in order to be able to more accurately adjust the opening of the first regulating valve according to the moisture content of the inlet shredded tobacco and the moisture content of the outlet shredded tobacco, the utility model skillfully utilizes the PID algorithm and the Dalin algorithm, that is, the input inlet After the data processing of tobacco moisture and outlet tobacco moisture, the PID algorithm and the Dalin algorithm specially aimed at the Dachun delay object are used to control the first regulating valve. The two algorithms operate under different moisture deviations and operating periods to play their respective roles. Algorithmic strengths. Specifically, in order to ensure the accuracy of regulation and control, the switch between the Dalin algorithm and the PID algorithm in the utility model is mainly determined by the operating frequency of the dampening barrel. When the operating frequency of the shredded tobacco dampening machine is less than 30Hz or when there is a large disturbance, the Dalin algorithm is used , which is more conducive to the adjustment ability of the Dalin algorithm for the system with a pure delay; and when the operating frequency of the drum of the shredded tobacco reconditioning machine is higher than 30Hz or runs stably, the PID algorithm is used, which is more conducive to taking advantage of the PID algorithm to observe the internal operation. .

As mentioned above, the Dalin algorithm and the PID algorithm are mainly control algorithms for controlling the flow rate of unsaturated steam. The feedback data is the moisture value of shredded tobacco collected by the moisture meter in the moisture resurgence barrel. The execution structure is the Samson regulating valve (that is, the first regulating valve). , that is, the flow rate of unsaturated steam is adjusted by the moisture in the inlet shredded tobacco and the moisture in the outlet shredded tobacco. However, another important time-varying factor of the system, that is, the water content of unsaturated steam, cannot be directly measured. Sometimes when the PID regulation output reaches 100% and is maintained for a long time, the moisture content of shredded tobacco still cannot rise to the qualified level. This phenomenon is caused by the reduction of steam moisture content, so it is necessary to be able to further automatically control the steam moisture content. Although the moisture content of the steam cannot be directly measured, and the PID algorithm and the Dalin algorithm are not applicable to the second control valve, the control objective of the PID algorithm and the Dalin algorithm is not to control the opening of the Samson control valve at a certain value. On this point, it is enough to ensure that the Samson regulating valve is not kept at 100% full opening or a very low opening for a long time, so the utility model cleverly thinks of using the opening control of the Samson regulating valve The algorithm of the second regulating valve, namely:

Step S6: Obtain the opening degree of the first regulating valve, and control the opening degree of the second regulating valve according to the moisture content of the outlet shredded tobacco and the opening degree of the first regulating valve to control the water flow in the water delivery pipeline so as to achieve the control of the conversion of the heat exchanger. The purpose of the water content of unsaturated steam.

Through this method, the water content and flow rate of the unsaturated steam can be automatically controlled according to the closed-loop moisture content of the shredded tobacco at the outlet/entrance, so as to achieve the purpose of automatically and precisely adjusting the moisture content of the shredded tobacco humidifier.

Exemplarily, obtaining the opening degree of the first regulating valve, and controlling the opening degree of the second regulating valve to control the water content of the unsaturated steam according to the moisture content of the outlet shredded tobacco and the opening degree of the first regulating valve (that is, step S6) includes:

Comparing the outlet shredded tobacco moisture with the first moisture threshold and the second moisture threshold, if the outlet shredded tobacco moisture is less than the first moisture threshold or the outlet tobacco moisture is greater than the second moisture threshold, the opening of the second regulating valve is set to 0;

Otherwise, acquire the opening degree of the first regulating valve, and compare the acquired opening degree of the first regulating valve with the first opening degree threshold and the second opening degree threshold;

If the collected opening of the first regulating valve is greater than the first opening threshold, the opening of the second regulating valve is increased by 1% every interval of the first time period;

If the collected opening degree of the first regulating valve is smaller than the second opening degree threshold, the opening degree of the second regulating valve is decreased by 1% every second time period.

Optionally, in this step, the first moisture threshold can be 7%, the second moisture threshold can be 15%, the first opening threshold can be 90%, the second opening threshold can be 10%, the first time period and the second time period may be 10s.

That is to say, when the moisture content of the cut tobacco at the outlet is less than 7.0% or greater than 15.0%, it can be judged that the equipment is operating in an abnormal state, or it is in a state of no tobacco. Excessive moisture will cause water stains in the subsequent shredded tobacco;

When the outlet tobacco moisture is in the above reasonable range (that is, the outlet tobacco moisture is between 7.0%-15.0%), judge the opening of the Samson regulating valve. If the opening of the Samson regulating valve is greater than 90%, then every 10s , increase the opening degree of the second regulating valve 9 by 1%, if the opening degree of the Samson regulating valve is less than 10%, then decrease the opening degree of the second regulating valve 9 by 1% every 10s.

Although the utility model has been illustrated and described with reference to some preferred embodiments of the utility model, those skilled in the art should understand that the above content is a further detailed description of the utility model in conjunction with specific embodiments Therefore, it cannot be assumed that the specific implementation of the present utility model is only limited to these descriptions. Those skilled in the art may make various changes in form and details, including some simple deduction or replacement, without departing from the spirit and scope of the present invention.

Claims (9)

1. A shredded tobacco moisture conditioning device, characterized in that it comprises: A water pipeline, the first end of which is connected to a water source; a first steam pipeline, the first end of which is connected to a steam source; The second steam pipeline, the second end of which is connected to the shredded tobacco dampening machine; A heat exchanger, the water inlet of the heat exchanger is connected to the second end of the water pipeline, the steam inlet of the heat exchanger is connected to the second end of the first steam pipeline, and the heat exchanger The steam outlet of the steam pipe is connected to the first end of the second steam pipe, and the saturated steam in the first steam pipe is converted into unsaturated steam through the heat exchanger and then output to the shredded tobacco humidifier through the second steam pipe ; The first regulating valve is arranged between the second steam pipe and the shredded tobacco dampening machine, and is used to adjust the flow rate of the unsaturated steam output by the second steam pipe; The inlet moisture detector is set near the inlet of the shredded tobacco humidifier, and is used to detect the moisture of the shredded tobacco at the inlet; The outlet moisture detector is installed near the output port of the shredded tobacco reconditioning machine, and is used to detect the moisture of the shredded tobacco at the outlet; Wherein, the water delivery pipeline is also provided with a third regulating valve for adjusting the water flow in the water delivery pipeline; the third regulating valve includes: a housing with a cavity inside, and the housing is provided with inlets and outlets arranged at intervals along the first direction; The first regulating valve rod has a mounting hole and a regulating hole arranged on the side wall of the mounting hole, and the mounting hole runs through the first regulating valve rod; The first regulating valve rod is at least partially accommodated in the cavity and can move between a first position and a second position in the cavity, and the installation hole communicates with the cavity; when the When the first regulating valve stem is at the first position, the regulating hole is in communication with the outlet and the outlet is isolated from the cavity; when the first regulating valve stem is at the second position , the inlet, the outlet and the cavity communicate; The second regulating valve rod is slidably arranged in the installation hole. 2 . The moisture regulating device of the shredded tobacco humidifier according to claim 1 , further comprising: a control device connected to the first regulating valve for controlling the opening degree of the first regulating valve. 3 . 3. The moisture regulating device of shredded tobacco dampening machine according to claim 2, further comprising: Both the inlet moisture detector and the outlet moisture detector are connected to the control device, and are used to transmit the detected moisture of the inlet shredded tobacco and the moisture of the outlet shredded tobacco to the control device; The control device adjusts the opening degree of the first regulating valve according to the moisture content of the inlet shredded tobacco and the moisture content of the outlet shredded tobacco. 4. The moisture regulating device of the shredded tobacco dampening machine according to claim 3, further comprising: a second regulating valve, arranged on the water delivery pipeline, for adjusting the water flow in the water delivery pipeline; The control device is also connected with the second regulating valve, and the control device is also used for adjusting the opening degree of the second regulating valve according to the moisture content of the outlet shredded tobacco and the opening degree of the first regulating valve. 5. The moisture regulating device of the shredded tobacco humidifier according to claim 4, characterized in that, the first regulating valve is a Samson regulating valve, and/or the second regulating valve is a proportional regulating valve. 6. The moisture regulating device of shredded tobacco humidifier according to claim 1, characterized in that, the cavity comprises a first cavity and a second cavity arranged in sequence along the first direction, and the first cavity Both the first cavity and the second cavity are cylindrical, and the diameter of the first cavity is larger than the diameter of the second cavity. 7. The moisture regulating device of the shredded tobacco dampening machine according to claim 6, wherein the first regulating valve rod comprises: main body; The adjustment part is in the shape of a truncated cone and is arranged at the lower end of the main body part. The diameter of the bottom end of the adjustment part is smaller than the diameter of the second cavity, and the top diameter of the adjustment part is larger than the diameter of the second cavity. 8. The moisture regulating device of shredded tobacco humidifier according to any one of claims 1 to 5, further comprising a third steam pipeline, the first end of which is connected to the steam source, and the second end of which is connected to the steam source. The second ends of the second steam pipes are connected to each other. 9. A shredded tobacco dampening machine, characterized by comprising the moisture regulating device of the shredded tobacco dampening machine according to any one of claims 1 to 8.

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