Jet hole blockage alarm device and system of tunnel type temperature and humidity increasing machine

Abstract

The utility model provides a device and a system for alarming blockage of injection holes of a tunnel type temperature and humidity increasing machine. The device comprises a steam pipeline, a water pipeline, a steam-water mixing station, a PLC (Programmable Logic Controller) and fluidized bed bottom plate injection holes, steam of the steam pipeline passing through the steam-water separator is divided into two paths of steam pipelines; a steam-water separator on the first steam pipeline is connected with an electric pressure gauge by being connected with a pneumatic diaphragm valve and a first check valve; the steam-water separator on the second steam pipeline is connected with the steam-water mixing station by being connected with a pressure reducing valve; the steam-water separator is also connected with a condensate water pipeline; the water pipeline is connected with the steam-water mixing station by being connected with a first electromagnetic valve; the steam-water mixing station is connected with a second electromagnetic valve and a second check valve and is connected with an electric pressure gauge; the electrically connected pressure gauge is connected with a fluidized bed bottom plate jet hole; the electric connection pressure gauge is electrically connected with the PLC and used for controlling the pneumatic diaphragm valve, the first electromagnetic valve and the second electromagnetic valve. And reminding can be carried out when the spraying hole is blocked, and dredging is carried out.

Description

Technical Field

[0001] The present application belongs to the technical field of cigarette production equipment, and in particular relates to a tunnel-type heating and humidifying machine spray hole blockage alarm device and system. Background Art

[0002] The tunnel type heating and humidifying machine is one of the main supporting equipment for tobacco leaf drying, and is responsible for the humidification and expansion of tobacco leaf. The working room of the equipment is a tunnel body filled with heat insulation materials on both sides, and many precisely processed steam spray holes are arranged in a crisscross pattern on the thin plate at the bottom. When in working state, the small holes on the bottom plate spray high-temperature steam and form a vortex layer, blowing the tobacco leaf into a semi-suspended state. Under the action of mechanical vibration and saturated steam injection, the volume of the tobacco leaf increases, achieving the purpose of leaf leaf expansion.

[0003] After the production run is completed, the equipment needs to be cleaned. However, the current problem is that although the inside of the tunnel is cleaned after each production, the accumulation of soot during the long production process will still cause some injection holes to be blocked. During daily maintenance, operators are required to use special tools to clean. If too many small holes on the bottom plate of the rehumidifier are blocked, the moisture content of the material at the outlet of the rehumidifier will not meet the working requirements and will fluctuate too much, which will indirectly cause the standard deviation of the moisture content at the outlet of the tofu drying machine to be too large, affecting the quality of the product.

[0004] Therefore, there is an urgent need for a device that can alarm the blockage of the spray holes on the bottom plate of the tunnel-type heating and humidifying machine to remind production personnel to clean them in time and improve production efficiency. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a tunnel-type heating and humidifying machine spray hole blockage alarm device, which can enable management personnel to timely understand the working status of the spray hole and whether blockage affects production accuracy. The present application also provides a system based on the tunnel-type heating and humidifying machine spray hole blockage alarm device, which has the same technical effect.

[0006] The first object of the present application is to provide a tunnel-type heating and humidifying machine spray hole blockage alarm device.

[0007] The above-mentioned application objective 1 of the present application is achieved through the following technical solutions:

[0008] A tunnel-type heating and humidifying machine spray hole blockage alarm device, comprising: a steam pipeline, a water pipeline, a steam-water mixing station, a PLC controller, and a fluidized bed bottom plate spray hole;

[0009] The steam in the steam pipeline after passing through the steam-water separator is divided into two steam pipelines; the steam-water separator on the first steam pipeline is connected to the electric pressure gauge through a pneumatic diaphragm valve and a first check valve; the steam-water separator on the second steam pipeline is connected to the steam-water mixing station through a pressure reducing valve; the steam-water separator is also connected to a condensed water pipeline;

[0010] The water pipeline is connected to the soda-water mixing station by being connected to a first solenoid valve;

[0011] The soda-water mixing station is connected to the electric pressure gauge by connecting a second solenoid valve and a second check valve;

[0012] The electric pressure gauge is connected to the fluidized bed bottom plate injection hole;

[0013] The electric pressure gauge is electrically connected to the PLC controller to control the pneumatic diaphragm valve, the first solenoid valve, and the second solenoid valve.

[0014] Preferably, a first stop valve is arranged between the steam pipeline and the pneumatic diaphragm valve; a second stop valve is arranged between the electric pressure gauge and the injection hole of the fluidized bed bottom plate; the steam-water separator is connected to the condensate pipeline by a third stop valve; and a fourth stop valve is arranged between the water pipeline and the first solenoid valve.

[0015] Preferably, a fifth stop valve and a sixth stop valve are provided between the electrical pressure gauge and the fluidized bed bottom plate injection holes, so as to control the fluidized bed bottom plate injection holes separately.

[0016] Preferably, a first pressure gauge is provided between the steam pipeline and the first stop valve; a second pressure gauge is provided between the pneumatic diaphragm valve and the first check valve; a third pressure gauge is provided between the first solenoid valve and the steam-water mixing station; and a fourth pressure gauge is provided between the fourth stop valve and the first solenoid valve.

[0017] Preferably, a first filter is further provided after the first stop valve in the steam pipeline; and a second filter is further provided after the fourth stop valve in the water pipeline.

[0018] Preferably, in the first steam pipeline, a pressure transmitter is further provided between the pneumatic diaphragm valve and the second pressure gauge.

[0019] Preferably, the soda-water mixing station is mixed with the second steam pipeline, and after the water temperature is heated to 30-50° C., it is connected to the electric pressure gauge through a second solenoid valve and a second check valve.

[0020] The second purpose of the present application is to provide a tunnel-type heating and humidifying machine spray hole blockage alarm system.

[0021] The second application objective of the present application is achieved through the following technical solutions:

[0022] A tunnel-type heating and humidifying machine spray hole blockage alarm system comprises any one of the tunnel-type heating and humidifying machine spray hole blockage alarm devices, and also comprises a control panel and an alarm device connected to the PLC controller; when the pressure value of the electrically connected pressure gauge exceeds a set threshold, the control panel automatically pops up an alarm message and reminds the operator.

[0023] Preferably, the alarm device includes one or a combination of a sound alarm and a photoelectric alarm.

[0024] Preferably, it also includes a communication device connected to the PLC controller, through which the pressure information can be transmitted to remote viewing and remote control via digital signals.

[0025] The present application provides a tunnel-type heating and humidifying machine spray hole blockage alarm device. The above device can monitor the pressure parameters. When there is too much blockage, the operator can spray holes on the bottom plate of the tunnel heating and humidifying machine to remind the operator to dredge the small holes on the bottom plate. The workload of the operator is further reduced. When the small holes on the bottom plate are blocked, the small holes on the bottom plate are cleaned in time to avoid excessive fluctuations in the moisture content of the outlet material and stabilize the standard deviation of the moisture content of the dryer outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a layout diagram of the hydraulic system of the tunnel-type heating and humidifying machine spray hole blockage alarm device provided in an embodiment of the present application.

[0028] The reference numerals are as follows:

[0029] 1. Soda-water separator; 2. First pressure gauge; 3. First stop valve; 4. First filter; 5. Pneumatic diaphragm valve; 6. Pressure transmitter; 7. Second pressure gauge; 8. First check valve; 9. Electric pressure gauge; 10. Second stop valve; 11. Fifth stop valve; 12. Sixth stop valve; 13. Third stop valve; 14. Pressure reducing valve; 15. Second check valve; 16. Third pressure gauge; 17. First solenoid valve; 18. Second solenoid valve; 19. Soda-water mixing station; 20. Fourth stop valve; 21. Second filter; 22. Fourth pressure gauge; 23. PLC controller. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0034] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0035] It should be understood that if "device" and / or "module" are used in this application, it is only a method for distinguishing different components, elements, parts, parts or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

[0036] The embodiments of the present application are written in a progressive manner.

[0037] like Figure 1 As shown, the embodiment of the present application provides a tunnel-type heating and humidifying machine spray hole blockage alarm device, the device comprising: a steam pipeline, a water pipeline, a steam-water mixing station 19, a PLC controller 23, and a fluidized bed bottom plate spray hole;

[0038] As an alarm device connected to the tunnel-type heating and humidifying machine, its main working principle is to mix high-temperature steam and water, and spray them into the rehumidification equipment tunnel through the nozzle of the fluidized bed bottom plate spray hole; therefore, in order to judge the blockage of the spray hole, the present application scheme monitors the pressure of the steam and water at the source; specifically, Figure 1 As shown, the steam in the steam pipeline after passing through the steam-water separator 1 is divided by a branch and is transported through two steam pipelines;

[0039] After passing through the steam-water separator 1, the separated steam is connected to the electric pressure gauge 9 on the first steam pipeline after passing through the pneumatic film valve 5 and the first check valve 8;

[0040] Another steam path is on the second steam pipeline and connected to the steam-water mixing station 19 through a pressure reducing valve 14;

[0041] At the same time, the steam-water separator 1 is also connected to a condensed water pipeline to recover the condensed water generated in the steam pipeline through the steam-water separator 1 to prevent it from entering the subsequent steam pipeline and affecting the injection process;

[0042] Synchronous, such as Figure 1 As shown, the water pipeline is connected to the soda-water mixing station 19 by being connected to a first solenoid valve 17;

[0043] The steam-water mixing station 19 mixes the steam in the second steam pipeline and the water in the water pipeline, and then is connected to the electric pressure gauge 9 via the second solenoid valve 18 and the second check valve 15;

[0044] The electric pressure gauge 9 receives the steam in the first steam pipeline and the mixed water in the steam-water mixing station 19, and then mixes and connects to the injection hole on the bottom plate of the fluidized bed, and sprays into the tunnel through the nozzle;

[0045] As the main functional unit of the alarm device, the electric pressure gauge 9 is electrically connected to the PLC controller 23 to control the pneumatic diaphragm valve 5, the first solenoid valve 17, and the second solenoid valve 18; the electric pressure gauge 9 sets the pressure limit value during the cleaning process. When the pressure reaches the limit value during the automatic cleaning process of the rehumidification equipment, an alarm message automatically pops up inside the PLC, and controls the pneumatic diaphragm valve 5, the first solenoid valve 17, and the second solenoid valve 18 to close the entire steam pipeline and the water pipeline, reminding the operator to clear the injection holes on the bottom plate of the rehumidification machine.

[0046] Further, in order to more conveniently close the entire steam pipeline and the water pipeline when the electric pressure gauge 9 reaches the upper pressure limit, in this embodiment, Figure 1 As shown, a first stop valve 3 is provided between the steam pipeline and the pneumatic film valve 5, which can realize the complete closure of the steam pipeline;

[0047] A second stop valve 10 is provided between the electric pressure gauge 9 and the fluidized bed bottom plate injection hole, for directly controlling the fluidized bed bottom plate injection hole;

[0048] The steam-water separator 1 can achieve the complete closure of the condensate water pipeline by connecting the third stop valve 13 to the condensate water pipeline;

[0049] A fourth stop valve 20 is provided between the water pipeline and the first solenoid valve 17, which can achieve the complete closure of the water pipeline;

[0050] By providing a plurality of stop valves, it is convenient for the operator to close the entire steam pipeline and the water pipeline in time after a blockage is found, thereby avoiding the steam pressure or water pressure being concentrated on the pneumatic diaphragm valve 5, the first solenoid valve 17, and the second solenoid valve 18, thereby causing excessive pressure and producing adverse effects.

[0051] Preferably, since there are several fluidized bed bottom plate injection holes at the bottom of the rehumidification equipment, in order to more clearly judge a specific part of the fluidized bed bottom plate injection holes, in addition to the second stop valve 10, a fifth stop valve 11 and a sixth stop valve 12 are also arranged in parallel between the electrical pressure gauge 9 and the fluidized bed bottom plate injection holes to control the fluidized bed bottom plate injection holes separately. Through different stop valves, it is possible to clearly judge which of the several fluidized bed bottom plate injection holes is blocked, so that the operator can clean it in time.

[0052] Preferably, in order to more conveniently observe the pressure index in the entire steam pipeline and the water pipeline, in this embodiment, the specific connection relationship is as follows: Figure 1 As shown:

[0053] A first pressure gauge 2 is provided between the steam pipeline and the first stop valve 3 to measure the pressure of the entire steam pipeline;

[0054] A second pressure gauge 7 is provided between the pneumatic film valve 5 and the first check valve 8 to measure the pressure of the entire first steam pipeline;

[0055] A third pressure gauge 16 is provided between the first solenoid valve 17 and the steam-water mixing station 19 to measure the pressure of the entire second steam pipeline;

[0056] A fourth pressure gauge 22 is provided between the fourth stop valve 20 and the first solenoid valve 17 for measuring the pressure of the entire water pipeline.

[0057] Furthermore, due to the high quality requirements of tobacco, high standards are also required for the high-temperature water vapor sprayed from the rehumidification device. Therefore, in order to ensure the purity of steam and water, in this embodiment,

[0058] A first filter 4 is also provided in the steam pipeline after the first stop valve 3 to filter the entire steam pipeline to ensure that no impurities enter the rehumidification device through the injection holes of the fluidized bed bottom plate;

[0059] A second filter 21 is also provided behind the fourth stop valve 20 in the water pipeline to filter the entire water pipeline to ensure that no impurities enter the rehumidification device through the injection holes of the fluidized bed bottom plate.

[0060] Furthermore, in order to more accurately measure the steam pressure in the first steam pipeline, in the present embodiment, a pressure transmitter 6 is further provided between the pneumatic diaphragm valve 5 and the second pressure gauge 7. The pressure transmitter 6 can convert the mechanical signal of the pressure into an electronic signal such as an electric current (4-20 mA). The pressure and voltage or current are in a linear relationship, so the pressure data in the first steam pipeline is transmitted to the PLC controller 23 in a timely manner.

[0061] Preferably, due to the process standard temperature parameter requirements for tobacco rehumidification, in the present application, the specific temperature for mixing with the second steam pipeline in the steam-water mixing station 19 is: the water temperature is heated to 30-50°C, and is connected to the electric pressure gauge 9 through a second solenoid valve 18 and a second check valve 15.

[0062] The present application also provides a spray hole blockage alarm system, which includes, in addition to the above-mentioned tunnel-type heating and humidifying machine spray hole blockage alarm device, a control panel and an alarm device connected to the PLC controller 23. When the pressure value of the electrically connected pressure gauge 9 exceeds the set threshold, that is, the pressure limit value, the control panel automatically pops up an alarm message and reminds the operator that the spray hole on the bottom plate of the dehumidification machine needs to be unblocked. At the same time, the PLC controller 23 can be used for program control to close the entire steam pipeline and the water pipeline in time to facilitate the unblocking operation of the operator.

[0063] Furthermore, the alarm device includes one or a combination of a sound alarm and a photoelectric alarm. Specifically in the present example, the alarm device is an audible and visual alarm. When the pressure value of the electrically connected pressure gauge 9 exceeds a set threshold, it can promptly issue a sound alarm and flash a light to remind the operator to handle it in time.

[0064] Preferably, the spray hole blockage alarm system proposed in the present application also includes a communication device connected to the PLC controller 23, through which the pressure information can be transmitted to the remote viewing and remote control via digital signals, and the pressure parameters of the entire steam pipeline and the water pipeline can be monitored in time, and abnormal blockage can be handled in time. In summary, this embodiment enables the management personnel to grasp the working status of the handling equipment in a timely manner.

[0065] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tunnel type heating and humidifying machine spray hole blockage alarm device, characterized in that: include: Steam pipelines, water pipelines, steam-water mixing stations, PLC controllers, fluidized bed bottom plate injection holes; The steam in the steam pipeline after passing through the steam-water separator is divided into two steam pipelines; the steam-water separator on the first steam pipeline is connected to the electric pressure gauge through a pneumatic diaphragm valve and a first check valve; the steam-water separator on the second steam pipeline is connected to the steam-water mixing station through a pressure reducing valve; the steam-water separator is also connected to a condensed water pipeline; The water pipeline is connected to the soda-water mixing station by being connected to a first solenoid valve; The soda-water mixing station is connected to the electric pressure gauge by connecting a second solenoid valve and a second check valve; The electric pressure gauge is connected to the fluidized bed bottom plate injection hole; The electric pressure gauge is electrically connected to the PLC controller to control the pneumatic diaphragm valve, the first solenoid valve, and the second solenoid valve.

2. The tunnel type heating and humidifying machine spray hole blockage alarm device according to claim 1, characterized in that: A first stop valve is arranged between the steam pipeline and the pneumatic diaphragm valve; a second stop valve is arranged between the electric pressure gauge and the fluidized bed bottom plate injection hole; the steam-water separator is connected to the condensate pipeline via a third stop valve; and a fourth stop valve is arranged between the water pipeline and the first solenoid valve.

3. The tunnel type heating and humidifying machine spray hole blockage alarm device according to claim 2, characterized in that: A fifth stop valve and a sixth stop valve are provided between the electrical pressure gauge and the fluidized bed bottom plate injection holes, so as to control the fluidized bed bottom plate injection holes separately.

4. The tunnel type heating and humidifying machine spray hole blockage alarm device according to claim 3, characterized in that: A first pressure gauge is arranged between the steam pipeline and the first stop valve; a second pressure gauge is arranged between the pneumatic diaphragm valve and the first check valve; a third pressure gauge is arranged between the first solenoid valve and the steam-water mixing station; and a fourth pressure gauge is arranged between the fourth stop valve and the first solenoid valve.

5. The tunnel type heating and humidifying machine spray hole blockage alarm device according to claim 4, characterized in that: A first filter is further provided behind the first stop valve in the steam pipeline; and a second filter is further provided behind the fourth stop valve in the water pipeline.

6. The tunnel type heating and humidifying machine spray hole blockage alarm device according to claim 5, characterized in that: In the first steam pipeline, a pressure transmitter is further provided between the pneumatic diaphragm valve and the second pressure gauge.

7. The tunnel type heating and humidifying machine spray hole blockage alarm device according to any one of claims 1 to 6, characterized in that: The water is mixed with the second steam pipeline in the steam-water mixing station, and after the water temperature is heated to 30-50° C., it is connected to the electric pressure gauge through a second solenoid valve and a second check valve.

8. A spray hole blockage alarm system, comprising the spray hole blockage alarm device for a tunnel-type heating and humidifying machine according to any one of claims 1 to 7, characterized in that: It also includes a control panel and an alarm device connected to the PLC controller. When the pressure value of the electric pressure gauge exceeds a set threshold, the control panel automatically pops up an alarm message and reminds the operator.

9. The spray hole blockage alarm system according to claim 8, characterized in that: The alarm device includes one or a combination of a sound alarm and a photoelectric alarm.

10. The spray hole blockage alarm system according to claim 9, characterized in that: It also includes a communication device connected to the PLC controller, through which pressure information can be transmitted to remote viewing and remote control via digital signals.

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