Cleaning equipment of airflow cut-tobacco drier and airflow cut-tobacco drier

Abstract

The invention relates to a cleaning device of an airflow cut-tobacco drier and the airflow cut-tobacco drier. The cleaning device comprises a water inlet device, a water storage tank, a water outlet device, a temperature adjusting assembly, a cleaning degree confirming element and a controller. One end of the water inlet equipment is communicated with a condensate water return pipeline, and the other end is communicated with an inlet of the water storage tank; one end of the water outlet equipment is communicated with an outlet of the water storage tank; the temperature adjusting assembly is used for adjusting the temperature of condensate water in the water storage tank; the cleaning degree confirming element is used for measuring the cleaning degree of cleaning water at the cleaning water outlet of the high-temperature pipeline; the controller is used for controlling the water inlet device and the temperature adjusting assembly to adjust the temperature of condensate water in the water storage tank and controlling the water outlet device to discharge water or not to discharge water according to the measured value of the cleaning degree confirming element. The water consumption of fresh water can be saved, and impact caused by alternate cooling and heating of a high-temperature pipeline is avoided; the cleaning process is more visual and controllable, and it is guaranteed that the high-temperature pipeline is cleaned thoroughly.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco production equipment, and in particular to a cleaning device for an airflow tobacco drying machine and the airflow tobacco drying machine. Background Art

[0002] The airflow tobacco drying machine is a high-temperature drying equipment. The process gas of the airflow tobacco drying machine has two functions. One is to remove excess moisture from tobacco according to the process requirements with the help of process gas; the other is to transport tobacco. With the help of process gas, tobacco is dehydrated from the inlet feed air lock while moving to the outlet air lock with the help of wind. Since the process gas temperature is as high as about 200℃, the wind speed reaches 18 meters / second, and the humidity of the process gas reaches about 85%, this causes the tobacco to contact (collide) with the inner wall of the pipe at high speed when it is transported in a high temperature and high humidity environment, and a large amount of smoke oil and smoke scale formed by broken shreds adhere to the inner wall of the inlet and outlet air locks and the turning point of the dry high-temperature pipe. When the equipment is preheated or in production, since this part of the smoke scale is repeatedly heated in a high temperature environment, the broken shreds adhered to the surface of the smoke scale may reach a smoldering state, and the fallen broken shreds enter the dust removal system through the dust removal pipe. After fully contacting with the air, the dust removal filter bag or tobacco soil will burn and cause a fire accident. Therefore, before starting the airflow tobacco drying machine every day, the drying pipe needs to be cleaned by a cleaning device to remove the sticky tobacco.

[0003] The current cleaning method has the following problems: 1. Each cleaning consumes 4 tons of fresh water, that is, 4 tons of sewage is discharged; 2. Each cleaning needs to wait until the airflow dryer cools down and the temperature in the drying pipe drops to about 30°C to avoid the high-temperature pipe from cracking due to thermal expansion and contraction caused by the impact of cold water, and the cleaning effect becomes worse due to the lower temperature of the soot; 3. The cleaning effect cannot be judged, and the entire cleaning process can only be carried out according to the set cleaning time, and it is impossible to judge whether the inner wall is clean. The above problems need to be solved urgently. Summary of the invention

[0004] The invention discloses a cleaning device for an airflow torrefied drying machine and the airflow torrefied drying machine, aiming to solve the technical problems existing in the prior art.

[0005] The present invention adopts the following technical solutions:

[0006] The present invention provides a cleaning device for an air current tobacco dryer. The cleaning device is used for cleaning the high-temperature pipeline of the air current tobacco dryer. The cleaning device includes a water inlet device, a water storage tank, a water outlet device, a temperature adjustment component, a cleaning degree confirmation element and a controller. One end of the water inlet device is used to communicate with the condensate return pipeline, and the other end is communicated with the inlet of the water storage tank for injecting condensate into the water storage tank. One end of the water outlet device is communicated with the outlet of the water storage tank, and the other end is used to communicate with the high-temperature pipeline. The temperature adjustment component is used to adjust the temperature of the condensate in the water storage tank. The cleaning degree confirmation element is used to measure the cleaning degree of the cleaning water at the cleaning water outlet of the high-temperature pipeline. The controller is used to adjust the temperature of the condensate in the water storage tank by controlling the water inlet device and the temperature adjustment component, and to control the water outlet device to discharge water or not to discharge water according to the measured value of the cleaning degree confirmation element.

[0007] In a cleaning device for an air current tobacco dryer according to the present invention, the condensate water outlet device includes a delivery pump, a water distributor and a plurality of water outlet components. The inlet of the delivery pump is communicated with the outlet of the water storage tank, and the outlet is communicated with the inlet of the water distributor. The water distributor has a plurality of water outlets. The water outlet components are arranged in one-to-one correspondence with the water outlets, one end is communicated with the water outlet, and the other end is used to supply water to the high-temperature pipeline. The controller is respectively connected to each of the water outlet components for controlling each of the water outlet components not to supply water simultaneously.

[0008] In a cleaning device for an air current tobacco dryer according to the present invention, the water outlet component includes a water outlet branch pipe, a water outlet control valve and a spray head. One end of the water outlet branch pipe is communicated with the water outlet, and the other end is communicated with the spray head. The spray head is used to supply water to the high-temperature pipeline. The water outlet control valve is arranged on the water outlet branch pipe and is connected to the controller.

[0009] In a cleaning device for an air current tobacco dryer according to the present invention, the condensate water outlet device further includes a water outlet control main valve, a first one-way valve and a water outlet pipeline. One end of the water outlet pipeline is communicated with the delivery pump, and the other end is communicated with the water distributor. The water outlet control main valve and the first one-way valve are respectively arranged on the water outlet pipeline, and the water outlet control main valve is connected to the controller.

[0010] In a cleaning device for an air current tobacco dryer according to the present invention, the condensate water outlet device further includes a return water pipeline and a return water control valve. One end of the return water pipeline is communicated with the outlet of the delivery pump, and the other end is used to communicate with the condensate return pipeline. The return water control valve is arranged on the return water pipeline and is connected to the controller. The controller is further used to open the return water control valve and the delivery pump and close the water outlet components while controlling the water inlet device to intake water, so as to adjust the temperature of the condensate in the water storage tank.

[0011] In a cleaning device for an air-flow cigarette cut tobacco dryer according to the present invention, the temperature adjustment assembly includes a cold water inlet assembly, a steam feed assembly, and a temperature measuring element; one end of the cold water inlet assembly is used to communicate with a cold water system, and the other end communicates with the water storage tank; one end of the steam feed assembly is used to communicate with a steam system, and the other end communicates with the water storage tank; the temperature measuring element is used to measure the temperature of the condensed water in the water storage tank; the controller can adjust the feed amount of the cold water inlet assembly and / or the steam feed assembly according to the measured value of the temperature measuring element.

[0012] In a cleaning device for an air-flow cigarette cut tobacco dryer according to the present invention, the cold water inlet assembly includes a cold water pipeline and a cold water control valve; one end of the cold water pipeline is used to communicate with a cold water system, and the other end communicates with the water storage tank; the cold water control valve is arranged on the cold water pipeline and connected to the controller.

[0013] In a cleaning device for an air-flow cigarette cut tobacco dryer according to the present invention, the steam feed assembly includes a steam pipeline and a steam control valve; one end of the steam pipeline is used to communicate with a cold water system, and the other end communicates with the water storage tank; the steam control valve is arranged on the steam pipeline and connected to the controller.

[0014] In a cleaning device for an air-flow cigarette cut tobacco dryer according to the present invention, the water inlet device includes a water inlet pipeline, a water inlet control valve, a steam trap, a second one-way valve, and a magnetic filter; one end of the water inlet pipeline is used to communicate with the condensed water return pipeline, and the other end communicates with the water storage tank; the water inlet control valve, the steam trap, the second one-way valve, and the magnetic filter are respectively arranged on the water inlet pipeline.

[0015] In a second aspect, the present invention further provides an air-flow cigarette cut tobacco dryer, which includes the cleaning device described in any one of the above; the water outlet end of the water outlet device of the cleaning device communicates with the high-temperature pipeline of the air-flow cigarette cut tobacco dryer and is located at the elbow of the high-temperature pipeline.

[0016] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0017] The present invention mainly provides a cleaning device for an air-flow cigarette cut tobacco dryer. Based on using condensed water as the cleaning water, it can save the water consumption of fresh water. And, since the temperature of the condensed water is relatively high and the temperature is adjusted by the temperature adjustment assembly, it can ensure the water temperature entering the high-temperature pipeline and avoid the impact on the high-temperature pipeline due to the alternation of cold and heat; by setting a cleaning degree confirmation element to measure the water quality after cleaning to determine the cleaning degree, the cleaning process is more intuitive and controllable, ensuring that the high-temperature pipeline is cleaned thoroughly. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments, which form a part of the present invention. The schematic embodiments of the present invention and their descriptions explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0019] Figure 1 It is a schematic structural diagram of a cleaning device for an air-flow cigarette drying machine of the present invention.

[0020] Explanation of reference numerals:

[0021] 1. Water inlet device; 11. Water inlet pipeline; 12. Water inlet control valve; 13. Steam trap; 14. Second check valve; 15. Magnetic filter; 2. Water storage tank; 3. Water outlet device; 31. Delivery pump; 32. Water distributor; 33. Water outlet assembly; 331. Water outlet branch pipe; 332. Water outlet control valve; 333. Spray head; 34. Total water outlet control valve; 35. First check valve; 36. Water outlet pipeline; 37. Return water pipeline; 38. Return water control valve; 39. Pressure tank; 4. Temperature adjustment assembly; 41. Cold water inlet assembly; 411. Cold water pipeline; 412. Cold water control valve; 42. Steam feeding assembly; 421. Steam pipeline; 422. Steam control valve; 43. Temperature measuring element; 5. Cleaning degree confirmation element; 6. Controller; 7. Liquid level measuring element; 8. Moisture exhaust control valve; 9. Pressure measuring element. Detailed embodiments

[0022] To make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention in combination with the specific embodiments and corresponding drawings of the present invention. In the description of the present invention, it should be noted that the term "or" is generally used in the sense of including "and / or", unless otherwise clearly specified in the context.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection" and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or a magnetic connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In the description of the present invention, "a plurality of" means at least two, such as two, three or more, etc., unless otherwise clearly and specifically limited.

[0024] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] To solve the problems existing in the prior art, the embodiments of the present application provide a cleaning device for an air-flow tobacco dryer and an air-flow tobacco dryer.

[0026] As Figure 1 shown, a cleaning device for an air-flow tobacco dryer is used to clean the high-temperature pipeline of the air-flow tobacco dryer. The cleaning device includes a water inlet device 1, a water storage tank 2, a water outlet device 3, a temperature adjustment component 4, a cleaning degree confirmation element 5, and a controller 6. One end of the water inlet device 1 is used to connect to the external condensate return pipeline. Here, the condensate preferably uses the high-temperature condensate generated during the tobacco processing production process (95-100°C under normal pressure). The other end is connected to the inlet of the water storage tank 2 to inject condensate into the water storage tank 2. One end of the water outlet device 3 is connected to the outlet of the water storage tank 2, and the other end is used to connect to the high-temperature pipeline. The temperature adjustment component 4 is used to adjust the temperature of the condensate in the water storage tank 2. Preferably, the temperature of the condensate in the water storage tank 2 is controlled at 90±5°C. At this time, after the air-flow tobacco dryer stops, the pipeline cleaning can start, improving the cleaning effect. The cleaning degree confirmation element 5 is used to measure the cleanliness of the cleaning water at the cleaning water outlet of the high-temperature pipeline. The controller 6 is used to adjust the temperature of the condensate in the water storage tank 2 by controlling the water inlet device 1 and the temperature adjustment component 4, and to control the water outlet or non-water outlet of the water outlet device 3 through the measured value of the cleaning degree confirmation element 5. When the cleanliness of the cleaning water at the cleaning water outlet of the high-temperature pipeline measured is lower than the standard requirement, the water outlet device 3 is kept discharging water for cleaning. When the cleanliness of the cleaning water at the cleaning water outlet of the high-temperature pipeline measured is not lower than the standard requirement, the water outlet device 3 stops discharging water.

[0027] The cleaning device for an air-flow tobacco dryer of the present invention, based on using condensate as the cleaning water, can save the water consumption of fresh water. And, the temperature of the condensate is relatively high, and the temperature is adjusted by the temperature adjustment component 4, which can ensure the water temperature entering the high-temperature pipeline and avoid the impact on the high-temperature pipeline due to the alternation of cold and heat. By setting the cleaning degree confirmation element 5 to measure the water quality after cleaning to determine the cleaning degree, the cleaning process is more intuitive and controllable, ensuring that the high-temperature pipeline is cleaned thoroughly.

[0028] In some preferred embodiments, the cleaning degree confirmation element 5 is a turbidity sensor.

[0029] In some preferred embodiments, a control valve is provided on the condensate return pipeline to control the condensate to only flow into the water inlet device 1.

[0030] In some preferred embodiments, the condensate water outlet device 3 includes a delivery pump 31, a water distributor 32, and a plurality of outlet components 33; the inlet of the delivery pump 31 is connected to the outlet of the water storage tank 2, and the outlet is connected to the inlet of the water distributor 32; the water distributor 32 has a plurality of water outlets; the outlet components 33 are arranged in one-to-one correspondence with the water outlets, one end is connected to the water outlet, and the other end is used for supplying water to the high-temperature pipeline; the controller 6 is respectively connected to each outlet component 33 for controlling the non-simultaneous water supply of each outlet component 33; based on the setting of a plurality of outlet components 33, different positions of the high-temperature pipeline can be cleaned separately, the cleaning is more thorough, and in cooperation with the cleaning degree confirmation element 5, when a single outlet component 33 discharges water for cleaning, it is judged whether the cleaning is qualified by obtaining the measured value of the cleaning degree confirmation element 5. After confirming that the cleaning is qualified, the other outlet components 33 are switched to discharge water for cleaning. Thus, it can ensure that the high-temperature pipeline is thoroughly cleaned.

[0031] Preferably, the condensate water outlet device 3 further includes a pressure tank 39; the interface of the pressure tank 39 is connected to the water outlet pipeline 36 between the delivery pump 31 and the water distributor 32; thus, it can ensure the water outlet pressure of the outlet component 33 and ensure the cleaning effect.

[0032] Preferably, the delivery pump 31 is a variable-frequency pump.

[0033] Preferably, a pressure measuring element 9 is arranged on the outlet pipeline of the delivery pump 31 to measure the outlet pressure of the delivery pump 31.

[0034] In some preferred embodiments, the outlet component 33 includes an outlet branch pipe 331, an outlet control valve 332, and a spray head 333; one end of the outlet branch pipe 331 is connected to the water outlet, and the other end is connected to the spray head 333; the spray head 333 is used for supplying water to the high-temperature pipeline; the outlet control valve 332 is arranged on the outlet branch pipe 331 and is connected to the controller 6, and the opening and closing of the outlet control valve 332 are controlled by the controller 6; based on the water outlet with the spray head 333, the sprayed water is more uniform, and the cleaning area is larger, improving the cleaning effect and cleaning efficiency.

[0035] In some preferred embodiments, the condensate water outlet device 3 further includes an outlet control main valve 34, a first check valve 35, and a water outlet pipeline 36; one end of the water outlet pipeline 36 is connected to the delivery pump 31, and the other end is connected to the water distributor 32; the outlet control main valve 34 and the first check valve 35 are respectively arranged on the water outlet pipeline 36, and the outlet control main valve 34 is connected to the controller 6; based on the setting of the first check valve 35, backflow can be avoided.

[0036] In some preferred embodiments, the condensate outlet device 3 further includes a return water pipeline 37 and a return water control valve 38; one end of the return water pipeline 37 is connected to the outlet of the transfer pump 31, and the other end is used to connect to the condensate return pipeline; the return water control valve 38 is arranged on the return water pipeline 37 and connected to the controller 6; the controller 6 is further configured to open the return water control valve 38 and the transfer pump 31 and close the outlet assembly 33 while controlling the water inlet of the water inlet device 1, so as to adjust the temperature of the condensate in the water storage tank 2; that is, when the high-temperature condensate is replenished to the storage upper limit of the water storage tank 2 but the required temperature is still not reached, the return water control valve 38 can be opened, the transfer pump 31 is started to discharge the condensate in the water storage tank 2 to the external condensate return pipeline, and high-temperature condensate is continuously replenished into the water storage tank 2 to provide the temperature of the condensate in the water storage tank 2 and ensure that the water level in the water storage tank 2 does not exceed the liquid level upper limit.

[0037] Preferably, a liquid level measuring element 7 is arranged on the water storage tank 2; the liquid level measuring element 7 is connected to the controller 6; at this time, the controller 6 obtains the measured value of the liquid level measuring element 7, and then controls the return water control valve 38 and the outlet assembly 33 to achieve automatic control.

[0038] In some preferred embodiments, the temperature adjustment assembly 4 includes a cold water inlet assembly 41, a steam feed assembly 42 and a temperature measuring element 43; one end of the cold water inlet assembly 41 is used to connect to the cold water system, and the other end is connected to the water storage tank 2; one end of the steam feed assembly 42 is used to connect to the steam system, and the other end is connected to the water storage tank 2; the temperature measuring element 43 is used to measure the temperature of the condensate in the water storage tank 2; the controller 6 can adjust the feed rate of the cold water inlet assembly 41 and / or the steam feed assembly 42 according to the measured value of the temperature measuring element 43; when the temperature of the condensate in the water storage tank 2 measured by the temperature measuring element 43 is too high, the controller 6 controls the cold water inlet assembly 41 to introduce cold water, such as tap water, to lower the temperature of the condensate; when the temperature of the condensate in the water storage tank 2 measured by the temperature measuring element 43 is too low, the controller 6 controls the steam feed assembly 42 to introduce high-temperature steam to increase the temperature of the condensate, so as to maintain the temperature of the condensate in the water storage tank 2 within the required range and ensure the cleaning effect.

[0039] In some preferred embodiments, the water storage tank 2 is provided with a moisture discharge port; the moisture discharge port is connected to the moisture discharge system through a moisture discharge control valve 8.

[0040] In some preferred embodiments, the cold water inlet assembly 41 includes a cold water pipeline 411 and a cold water control valve 412; one end of the cold water pipeline 411 is used to connect to the cold water system, and the other end is connected to the water storage tank 2; the cold water control valve 412 is arranged on the cold water pipeline 411 and connected to the controller 6.

[0041] In some preferred embodiments, the steam feed assembly 42 includes a steam pipeline 421 and a steam control valve 422; one end of the steam pipeline 421 is used to communicate with the cold water system, and the other end communicates with the water storage tank 2; the steam control valve 422 is arranged on the steam pipeline 421 and is connected to the controller 6.

[0042] In some preferred embodiments, the water inlet device 1 includes a water inlet pipeline 11, a water inlet control valve 12, a steam trap 13, a second check valve 14, and a magnetic filter 15 (such as IVAR brand, DN50 model); one end of the water inlet pipeline 11 is used to communicate with the condensate return pipeline, and the other end communicates with the water storage tank 2; the water inlet control valve 12, the steam trap 13, the second check valve 14, and the magnetic filter 15 are respectively arranged on the water inlet pipeline 11; the second check valve 14 is used to prevent the reverse flow of condensate, and the magnetic filter 15 is used to adsorb iron in the condensate to purify the water quality. The purified water quality meets the "Sanitary Standards for Drinking Water" GB5749-85, and the water quality hardness is better than that of the original municipal water supply; the water inlet control valve 12 is used to control whether to supply water to the water storage tank 2.

[0043] In some preferred embodiments, the water inlet control valve 12, the water outlet control valve 332, the total water outlet control valve 34, the return water control valve 38, and the cold water control valve 412 can all be selected as solenoid valves, such as the "Haozhen" brand 304 high-temperature resistant solenoid valve; the steam control valve 422 can be selected as a pneumatic angle valve.

[0044] In some preferred embodiments, the water storage volume at the upper limit of the water level in the water storage tank 2 is greater than the water consumption for a single cleaning. Thus, a certain amount of water is stored in the water storage tank 2 to reduce the flashing amount when supplementing high-temperature condensate.

[0045] The working process of the cleaning device of an air-flow cigarette drying machine according to the present invention is as follows:

[0046] In the initial state, all components are in the closed state.

[0047] 1. Water replenishment for the water storage tank 2:

[0048] The water inlet control valve 12 is opened through the controller 6 to replenish water to the water storage tank 2, and the exhaust control valve 8 is opened to discharge the moisture generated by the flashing of the condensate; when the measured value of the liquid level measuring element 7 reaches the upper limit value of the liquid level, the water inlet control valve 12 is closed, and the control valve on the condensate return pipeline is opened.

[0049] 2. Temperature adjustment of the water storage tank 2:

[0050] 2.1 Temperature control during the water replenishment process:

[0051] When replenishing water to the water storage tank 2 through the water inlet control valve 12, when the liquid level measuring element 7 detects that the condensate water level reaches the upper limit of the water level, the water inlet control valve 12 is closed. If the measured value of the temperature measuring element 43 is lower than 85 °C at this time, the transfer pump 31 is started, the return water control valve 38 is opened, and the condensate water enters the closed condensate water return pipeline and then flows into the condensate water recovery system; the water inlet control valve 12 is opened to continuously supply high-temperature and high-pressure condensate water into the water storage tank 2. The controller 6 controls the rotation speed of the motor through the frequency converter of the transfer pump 31 to control the rising speed of the water level in the water storage tank 2 and the rising speed of the condensate water temperature, so that when the water level in the water storage tank 2 reaches the upper limit of the water level, the water temperature reaches 90 ± 5 °C, and the transfer pump 31, the water inlet control valve 12 and the return water control valve 38 are closed.

[0052] 2.2 Temperature adjustment after water replenishment is completed:

[0053] If the water temperature does not reach 90 ± 5 °C when the water level in the water storage tank 2 reaches the upper limit of the water level; the controller 6 controls the steam control valve 422 to open, and the steam enters the water storage tank 2 to raise the temperature of the condensate water to 90 ± 5 °C, and then closes the steam control valve 422;

[0054] If the water temperature is higher than 95 °C when the water level in the water storage tank 2 reaches the upper limit of the water level, the controller 6 controls the cold water control valve 412 to open, starts the transfer pump 31, and the return water control valve 38 is opened. The controller 6 controls the rotation speed of the motor through the frequency converter of the transfer pump 31 to control the rising speed of the water level in the water storage tank 2 and the decreasing speed of the condensate water temperature. Preferably, the water level in the water storage tank 2 is maintained unchanged. When the water temperature in the water storage tank 2 reaches 85 ± 5 °C, the transfer pump 31, the return water control valve 38 and the cold water control valve 412 are closed.

[0055] 3. Cleaning process:

[0056] The controller 6 controls the start of the transfer pump 31, opens the total water outlet control valve 34, and opens the water outlet control valve 332 from high to low according to the height set by each spray head 333. Each time a single water outlet control valve 332 is started to clean the pipeline; when the measured value of the cleaning degree confirmation element 5 meets the requirements, the water outlet control valve 332 of this path is closed, and then the subsequent water outlet control valves 332 are started in turn, repeating the above steps until all the water outlet control valves 332 have been operated, and the cleaning is completed; the total water outlet control valve 34 is closed.

[0057] Embodiment 2

[0058] This embodiment provides an air-flow cigarette drying machine, as Figure 1 shown, which includes the cleaning equipment in the above-mentioned Embodiment 1; the water outlet end of the water outlet equipment 3 of the cleaning equipment is communicated with the high-temperature pipeline A of the air-flow cigarette drying machine and is located at the elbow of the high-temperature pipeline A.

[0059] An air-flow tobacco dryer according to the present invention uses condensed water as cleaning water, which can save the consumption of fresh water. Moreover, since the temperature of the condensed water is relatively high, a temperature adjustment component can ensure the water temperature entering the high-temperature pipeline, avoiding the impact on the high-temperature pipeline caused by the large temperature difference between hot and cold. By setting a cleaning degree confirmation element to measure the water quality after cleaning to determine the cleaning degree, the cleaning process is more intuitive and controllable, ensuring that the high-temperature pipeline is cleaned thoroughly.

[0060] In some preferred embodiments, when each water outlet component 33 supplies water, the water is discharged from high to low in sequence, and the water supply of the water outlet device 3 is controlled according to the cleanliness of the cleaning water at the outlet of the high-temperature pipeline measured by the cleaning degree confirmation element 5. Based on this, the positions that need to be cleaned in the high-temperature pipeline can be cleaned one by one to ensure thorough cleaning.

[0061] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit of the present invention and the scope protected by the claims, and all of them fall within the protection scope of the present invention.

Claims

1. A cleaning device for an air-flow tobacco drying machine, the cleaning device being used for cleaning the high-temperature pipeline of the air-flow tobacco drying machine, characterized in that, The cleaning device includes a water inlet device, a water storage tank, a water outlet device, a temperature adjustment component, a cleaning degree confirmation element, and a controller; One end of the water inlet device is used to connect to the condensate return pipeline, and the other end is connected to the inlet of the water storage tank for injecting condensate into the water storage tank; One end of the water outlet device is connected to the outlet of the water storage tank, and the other end is used to connect to the high-temperature pipeline; The temperature adjustment component is used to adjust the temperature of the condensate in the water storage tank; The cleaning degree confirmation element is used to measure the cleanliness of the cleaning water at the cleaning water outlet of the high-temperature pipeline; The controller is used to adjust the temperature of the condensate in the water storage tank by controlling the water inlet device and the temperature adjustment component, and to control the water outlet device to discharge water or not according to the measured value of the cleaning degree confirmation element.

2. The cleaning device for an air-flow cut tobacco dryer according to claim 1, characterized in that, The condensate water outlet device includes a delivery pump, a water distributor, and a plurality of water outlet components; The inlet of the delivery pump is connected to the outlet of the water storage tank, and the outlet is connected to the inlet of the water distributor; The water distributor has a plurality of water outlets; The water outlet components are arranged in one-to-one correspondence with the water outlets, one end is connected to the water outlet, and the other end is used to supply water to the high-temperature pipeline; The controller is respectively connected to each of the water outlet components for controlling each of the water outlet components not to supply water simultaneously.

3. The cleaning device for an air current cut tobacco dryer according to claim 2, characterized in that, The water outlet component includes a water outlet branch pipe, a water outlet control valve, and a spray head; One end of the water outlet branch pipe is connected to the water outlet, and the other end is connected to the spray head; The spray head is used to supply water to the high-temperature pipeline; The water outlet control valve is arranged on the water outlet branch pipe and is connected to the controller.

4. The cleaning device for an air current tobacco drying machine according to claim 2, characterized in that, The condensate water outlet device further includes a water outlet control main valve, a first check valve, and a water outlet pipeline; One end of the water outlet pipeline is connected to the delivery pump, and the other end is connected to the water distributor; The water outlet control main valve and the first check valve are respectively arranged on the water outlet pipeline, and the water outlet control main valve is connected to the controller.

5. The cleaning device of an air current tobacco drying machine according to claim 2, characterized in that The condensate water outlet device further includes a return water pipeline and a return water control valve; One end of the return water pipeline is connected to the outlet of the delivery pump, and the other end is used to connect to the condensate return pipeline; The return water control valve is arranged on the return water pipeline and is connected to the controller; The controller is further used to adjust the temperature of the condensate in the water storage tank by opening the return water control valve and the delivery pump and closing the water outlet components while controlling the water inlet device to intake water.

6. The cleaning device for an air current tobacco dryer according to any one of claims 1-5, characterized in that The temperature adjustment component includes a cold water inlet component, a steam feeding component, and a temperature measuring element; One end of the cold water inlet component is used to connect to the cold water system, and the other end is connected to the water storage tank; One end of the steam feeding component is used to connect to the steam system, and the other end is connected to the water storage tank; The temperature measuring element is used to measure the temperature of the condensate in the water storage tank; The controller can adjust the feeding amount of the cold water inlet component and / or the steam feeding component according to the measured value of the temperature measuring element.

7. The cleaning device for an air current tobacco dryer according to claim 6, characterized in that, The cold water inlet component includes a cold water pipeline and a cold water control valve; One end of the cold water pipeline is used to connect to the cold water system, and the other end is connected to the water storage tank; The cold water control valve is arranged on the cold water pipeline and is connected to the controller.

8. The cleaning device for an air-flow cut tobacco dryer according to claim 6, characterized in that, The steam feeding assembly includes a steam pipeline and a steam control valve; One end of the steam pipeline is used to communicate with the cold water system, and the other end communicates with the water storage tank; The steam control valve is arranged on the steam pipeline and connected to the controller.

9. The cleaning device for an air current cut tobacco dryer according to any one of claims 1-8, characterized in that The water inlet device includes a water inlet pipeline, a water inlet control valve, a steam trap, a second check valve and a magnetic filter; One end of the water inlet pipeline is used to communicate with the condensate return pipeline, and the other end communicates with the water storage tank; The water inlet control valve, the steam trap, the second check valve and the magnetic filter are respectively arranged on the water inlet pipeline.

10. An air current drying and roasting machine, characterized in that, It includes the cleaning equipment according to any one of claims 1-9 above; the water outlet end of the water outlet device of the cleaning equipment communicates with the high-temperature pipeline of the air-flow cigarette roasting machine and is located at the elbow of the high-temperature pipeline.

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