CN116086207A - Tobacco stem washing water exchange equipment - Google Patents

Abstract

The invention discloses a device for changing water for washing stems for cigarettes. device. The condensate water tank is located above the stem washing water tank, the condensate water tank and the condensate water storage tank are connected through the first condensate water injection pipe, and the condensate water tank and the stem washing water tank are connected through the second condensate water injection pipe Connect, also connect tap water water injection pipe on the stem washing water tank. The inside of the stem-washing water tank is provided with a circulating water pump. The condensed water produced in the silk-making workshop is stored in the condensed water storage tank, and the controller injects condensed water into the stem washing water tank through the first condensed water injection pipe, the condensed water tank and the second condensed water injection pipe, and Inject tap water into the stem washing water tank simultaneously by the tap water injection pipe. Condensed water is hot water, which is mixed with tap water to heat the tap water to meet the water temperature requirements in the stem washing water tank.

Description

Tobacco stem washing water changing equipment

Technical Field

The invention belongs to the technical field of shredded tobacco stem production and processing in the tobacco industry, and relates to a water changing device for washing and replacing tobacco stem water.

Background Art

In the production of shredded stems, the first process is the stem washing process. In the stem washing process, the stem washing water temperature is required to reach a certain temperature and be replaced regularly. The traditional method of replacing and heating the stem washing water is to drain the water in the stem washing water tank, open the tap water filling valve, add water to the stem washing water tank to the rated capacity, and then open the steam valve to heat the tap water directly with steam. When the temperature reaches the process requirements, close the steam valve to complete the replacement and heating procedures of the stem washing water. The above operation process is cumbersome and needs to be completed manually. In addition, the water replenishment and heating processes are carried out successively, and using steam to heat the tap water is time-consuming and inefficient.

Summary of the invention

In order to solve the above technical problems, the purpose of the present invention is to provide a water changing device for tobacco stem washing water, which uses the condensed water generated by silk production as hot water, and fills the stem washing water tank with tap water at the same time. Combined with a controller, automatic water change of the stem washing water tank is realized, which reduces manual labor intensity and greatly improves work efficiency.

To achieve the above purpose, the technical solution of the present invention is: a water changing device for washing stem water for tobacco, comprising a washing stem water tank, a condensed water tank, a condensed water storage tank, a first condensed water injection pipe, a second condensed water injection pipe, a tap water injection pipe and a controller. The condensed water tank is located above the washing stem water tank, the condensed water tank and the condensed water storage tank are connected by the first condensed water injection pipe, the condensed water tank and the washing stem water tank are connected by the second condensed water injection pipe, and the washing stem water tank is also connected to the tap water injection pipe. A circulating water pump is provided inside the washing stem water tank, and the circulating water pump is used to stir the mixed liquid (condensed water and tap water) in the washing stem water tank to make the water temperature of the mixed liquid uniform. The condensed water generated in the silk-making workshop is stored in the condensed water storage tank, and the controller injects condensed water into the washing stem water tank through the first condensed water injection pipe, the condensed water tank and the second condensed water injection pipe, and simultaneously injects tap water into the washing stem water tank through the tap water injection pipe. The condensed water is hot water, which is mixed with tap water to heat the tap water to meet the water temperature requirements in the stem washing water tank.

Preferably, the first condensate water injection pipe is provided with a first pneumatic valve and a water pump, the second condensate water injection pipe is provided with a second pneumatic valve, the tap water injection pipe is provided with a third pneumatic valve, and the controller is provided with a water injection button, which is used to open the first pneumatic valve, and the closing of the first pneumatic valve is controlled by the controller. When it is necessary to inject water into the condensate water tank, the water injection button can be manually pressed, and the controller closes the first pneumatic valve after the water injection is completed. The water pump is used to pump the condensate in the condensate water storage tank into the first condensate water injection pipe, and then into the condensate water tank.

Preferably, the second pneumatic valve and the third pneumatic valve are both connected to a controller, and the controller can control the opening or closing of the second pneumatic valve and the third pneumatic valve, so as to inject condensed water and tap water into the stem washing water tank at the same time.

Preferably, the water pump is provided with a water pump controller, which is connected to the first pneumatic valve. The first pneumatic valve transmits an opening or closing signal to the water pump controller, thereby controlling the water pump to open or close.

Preferably, a condensate water level sensor and a first temperature sensor are installed in the condensate water tank, and both the condensate water level sensor and the first temperature sensor are connected to the controller. The condensate water level sensor transmits a detection signal to the controller, so that the controller closes the first pneumatic valve and stops injecting condensate into the condensate water tank. The first temperature sensor is used to detect the temperature of the condensate water in the condensate water tank and provide it to the controller as a known parameter for program calculation.

Preferably, an overflow pipe is provided outside the condensate water tank, the top of the overflow pipe is at a height equal to the height of the condensate water level sensor, and the bottom of the overflow pipe is connected to the external drainage system. The overflow pipe is used to prevent the condensate water level in the condensate water tank from being too high. When the condensate water level is too high, the excess condensate will be discharged to the drainage system through the overflow pipe.

Preferably, a low water level sensor is installed in the stem washing water tank, and the low water level sensor is connected to the controller. The low water level sensor transmits a low water level detection signal to the controller, indicating that water needs to be added to the stem washing water tank, and the controller opens the second pneumatic valve and the third pneumatic valve to inject condensed water and tap water at the same time.

Preferably, a high water level sensor and a second temperature sensor are also installed in the stem washing water tank, a high water level indicator light and a temperature display screen are provided on the controller, the high water level sensor is connected to the high water level indicator light, the high water level sensor transmits a high water level detection signal to the high water level indicator light, and the high water level indicator light is on, indicating that the water filling is completed. The second temperature sensor is connected to the temperature display screen, and the temperature display screen displays the real-time water temperature in the stem washing water tank detected by the second temperature sensor, so as to facilitate manual detection of whether the water temperature in the stem washing water tank meets the requirements.

Preferably, the stem washing water tank is installed on the water tank bracket, and the condensed water tank is installed on the water tank bracket. The water tank bracket is higher than the water tank bracket, and when the second pneumatic valve is opened, the condensed water stored in the condensed water tank is injected into the stem washing water tank due to the siphon principle.

The tobacco stem washing water changing equipment provided by the present invention utilizes the waste heat generated in the silk production, and uses the condensed water generated in the silk production as hot water to fill the stem washing water tank with tap water at the same time. The entire water filling process is controlled by a controller, and the stem washing water tank volume, the condensed water temperature detected by the first temperature sensor, the tap water temperature (normal temperature), the condensed water pressure, the tap water pressure, the condensed water first water injection pipe diameter, the condensed water second water injection pipe diameter, and the tap water injection pipe diameter are used as known parameters. A technician in this field writes a program and inputs it into the controller to calculate the opening time of the second pneumatic valve and the third pneumatic valve, so as to realize the stem washing water changing work. The tobacco stem washing water changing equipment has important practical significance in improving production efficiency, utilizing waste heat in production, reducing steam consumption, reducing labor intensity, and improving safety assurance capabilities.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic diagram of pipeline connection of the present invention.

Description of main component symbols:

1. Washing water tank

11 water tank bracket; 12 low water level sensor; 13 high water level sensor; 14 second temperature sensor; 15 circulating water pump

2 Condensate tank

21 water tank bracket; 22 condensed water level sensor; 23 first temperature sensor; 24 overflow pipe

3Condensate storage tank

4 Condensate first injection pipe

41 first pneumatic valve; 42 water pump

5 Condensate second water injection pipe

51 Second pneumatic valve

6Tap water injection pipe

61 Third pneumatic valve

7 Controller

71 water filling button; 72 high water level indicator light; 73 temperature display screen

8. Drainage system

DETAILED DESCRIPTION

The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the tobacco stem washing water changing device provided by the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the scope of protection of the present invention.

As shown in Figures 1 and 2, the present invention provides a tobacco stem washing water changing device, including a stem washing water cabinet 1, a condensed water tank 2, a condensed water storage tank 3, a first condensed water injection pipe 4, a second condensed water injection pipe 5, a tap water injection pipe 6 and a controller 7.

The condensed water tank 2 is located above the stem washing water tank 1 . The stem washing water tank 1 is installed on a tank bracket 11 . The condensed water tank 2 is installed on a tank bracket 21 . The tank bracket 11 is higher than the tank bracket 21 .

Condensate water storage pipeline: The condensate water storage tank 3 and the condensate water tank 2 are connected through the condensate water first water injection pipe 4. One end of the condensate water first water injection pipe 4 is installed perpendicular to the side wall of the condensate water tank 2. The first condensate water injection pipe 4 is provided with a first pneumatic valve 41 and a water pump 42. The controller 7 is provided with a water injection button 71, which is used to open the first pneumatic valve 41. The closing of the first pneumatic valve 41 is controlled by the controller 7. The water pump 42 is arranged near the condensate water storage tank 3, and a water pump controller is arranged thereon. The water pump controller is connected to the first pneumatic valve 41. After the first pneumatic valve 41 is opened, the opening signal will be transmitted to the water pump controller, thereby opening the water pump 42, so that the condensate in the condensate water storage tank 3 is injected into the condensate water tank 2 through the condensate water first water injection pipe 4.

A condensed water level sensor 22 and a first temperature sensor 23 are installed in the condensed water tank 2, and both the condensed water level sensor 22 and the first temperature sensor 23 are connected to the controller 7. The condensed water level sensor 22 transmits a detection signal to the controller 7, so that the controller 7 closes the first pneumatic valve 42 and stops injecting condensed water into the condensed water tank 2. The first temperature sensor 23 is used to detect the temperature of the condensed water in the condensed water tank 2, and provides it as a known parameter to the controller 7 for program calculation.

An overflow pipe 24 is provided outside the condensate tank 2, the top of the overflow pipe 24 is at a height equal to the height of the condensate level sensor 22, and the bottom of the overflow pipe 24 is connected to the external drainage system 8. The overflow pipe is used to prevent the condensate level in the condensate tank 2 from being too high. When the condensate level is too high, the excess condensate will be discharged to the drainage system 8 through the overflow pipe 24.

Condensate injection pipeline: The condensate tank 2 and the stem washing water tank 1 are connected by a second condensate injection pipe 5, on which a second pneumatic valve 51 is provided. The second pneumatic valve 51 is connected to a controller 7, and the controller 7 receives a corresponding signal to control the second pneumatic valve 51 to open or close, thereby injecting condensate into the stem washing water tank 1.

Tap water injection pipeline: The stem washing water tank 1 is connected to the tap water injection pipe 6, one end of which is installed perpendicular to the side wall of the stem washing water tank 1, and the other end is connected to an external water source device. A third pneumatic valve 61 is provided on the tap water injection pipe 6, and the third pneumatic valve 61 is connected to the controller 7. The controller 7 receives a corresponding signal to control the third pneumatic valve 61 to open or close, thereby realizing the injection of tap water into the stem washing water tank 1.

A low water level sensor 12 , a high water level sensor 13 , a second temperature sensor 14 and a circulating water pump 15 are installed in the stem washing water tank 1 , and all of the four are installed on the side wall of the stem washing water tank 1 .

The low water level sensor 12 is connected to the controller 7. The low water level sensor 12 transmits a low water level detection signal to the controller 7, indicating that water needs to be added to the stem washing water tank 1. The controller 7 opens the second pneumatic valve 51 and the third pneumatic valve 61 and injects condensed water and tap water at the same time.

The controller 7 is provided with a high water level indicator light 72 and a temperature display screen 73. The high water level sensor 13 is connected to the high water level indicator light 72. The high water level sensor 13 transmits a high water level detection signal to the high water level indicator light 72. The high water level indicator light 72 lights up, indicating that the water filling is completed. The second temperature sensor 14 is connected to the temperature display screen 73. The temperature display screen 73 displays the real-time water temperature in the stem washing water tank 1 detected by the second temperature sensor 14, which is convenient for manual detection of whether the water temperature in the stem washing water tank 1 meets the requirements.

The circulating water pump 15 is used to stir the mixed liquid (condensed water and tap water) in the stem washing water tank 1 to make the water temperature of the mixed liquid uniform.

Before using the tobacco stem washing water changing device provided by the present invention, the volume of the stem washing water tank, the condensed water temperature detected by the first temperature sensor, the tap water temperature (normal temperature), the condensed water pressure, the tap water pressure, the diameter of the first condensed water injection pipe, the diameter of the second condensed water injection pipe, and the diameter of the tap water injection pipe are used as known parameters. A person skilled in the art writes a program and inputs it into the controller 7 to calculate the opening time t _h and t _c of the second pneumatic valve 51 and the third pneumatic valve 61. The specific calculation process is as follows:

The first step is enthalpy calculation: suppose the volume of the stem washing water tank 1 is _Va , the volume of condensed water to be added is _Vh , the volume of tap water to be added is _Vc , the process water temperature of stem washing water is _Tp , the first temperature sensor in the condensed water tank 2 represents the initial water temperature _Th1 of adding condensed water, the second temperature sensor 14 in the stem washing water tank 1 represents the water temperature _Th2 at the end of adding condensed water, the tap water temperature is _Tc , and the specific heat capacity of water is C.

The temperature of condensed water will change with time. The heat of hot water will radiate to the low temperature and lower the temperature. It is also possible to inject new steam condensed water to increase the temperature. Since the water temperature cannot change suddenly, the hot water temperature can be considered a function of time, and a linear function. When the condensed water is added, the water temperature corresponding to time t1 is T _h1 , and the water temperature corresponding to the end of water injection time t2 is T _h2 . Tap water comes from a relatively large system, and the water temperature can be considered to remain constant and will not change over time in a short period of time.

The enthalpy generated when the condensed water with a volume of V _h reaches T _p is:

The enthalpy required for tap water with a volume of V _c to reach T _p is: C × V _c × (T _p - _{T c} ) (2)

V _h +V _c =V _a (3)

And T _h1 , T _h2 ＞T _p ＞T _c (4)

According to the law of conservation of heat, the heat energy released by hot water _Th1 , _Th2 to _Tp is equal to the heat energy required for tap water to rise from _Tc to _Tp , that is: Formula (1) = Formula (2)

Further, according to equation (3) and equation (5), we can solve the equation

have to

Calculate the hot water replenishment time T _h based on the replenishment amount of hot water and tap water

Hot water replenishment state equation V-πρr ² v＝0(8)

In formula (8), V is the hot water replenishment volume, ρ is the density of water, r is the radius of the water pipe, v is the flow rate of water, and π is the circumference of a circle.

The relationship between the hot water flow rate and pressure at the hot water pipe supply outlet is: v ² /2g+P/γ+y＝H ₀ (9)

In formula (9), g is the acceleration due to gravity, P is the hot water pressure, γ is the weight density of water, and y is the height from the hot water level to the pipe mouth.

The condensate water tank 2 is located above the stem washing water tank 1, and the condensate flows into the stem washing water tank 1 by natural overflow. The change of the condensate water level in the condensate water tank 2 affects the hot water pressure, and the relationship is linear, that is, P = f (y). The second condensate water injection pipe 5 is perpendicular to the stem washing water tank 1, and the inner wall of the hot water pipe is smooth. When the water is inlet, the second pneumatic valve 51 is opened, and the pressure loss caused by the pipe and the valve can be ignored.

According to the hot water replenishment volume V _h , calculate the water level change of the condensate water tank 2. The liquid level cross-sectional area of the condensate water tank 2 is s, then V _h =s×h(10)

Wherein, h is the change of the condensed water level in the condensed water tank 2,

The relationship between the condensate flow rate and the water level is v ² = 2y(12)

The change of flow rate in the whole water replenishment process is a nonlinear relationship. One y value corresponds to one hot water flow rate. According to formula (12), the instantaneous speed of n y value points is calculated to obtain the hot water flow rate matrix V _n . The average speed can be obtained by averaging the instantaneous speed calculated by the y value of each point:

Relationship between water replenishment volume and average water replenishment flow rate:

_th is the condensate water replenishment time, and r is the pipe radius of the second condensate water injection pipe 5.

The tap water pressure and flow rate are basically constant, and the water replenishment time is:

Where _Vc is the flow rate of tap water.

According to equations (15) and (16), the opening time of the second pneumatic valve 51 and the third pneumatic valve 61, that is, the filling time of condensed water and tap water, can be obtained.

Before using the equipment, manually press the water filling button 71 on the controller 7. If the condensed water level sensor 22 in the condensed water tank 2 does not detect a water level signal at this time, the controller 7 opens the first pneumatic valve 41, and the opening signal of the first pneumatic valve 41 is transmitted to the water pump controller, thereby turning on the water pump 42. The condensed water (hot water) in the condensed water storage tank 3 is injected into the condensed water tank 1 through the condensed water first water injection pipe 4 until the condensed water level sensor 22 detects a water level signal, and transmits the detection signal to the controller 7. The controller 7 closes the first pneumatic valve 41 and the air pump controller, completing the process of filling the condensed water tank 2 with water for use as backup water.

When it is necessary to change the water in the stem washing water tank 1, the sewage in the stem washing water tank 1 is first discharged. When the low water level sensor 12 detects the signal that all the sewage is discharged, the detection signal is transmitted to the controller 7. The controller 7 opens the second pneumatic valve 51 and the third pneumatic valve 61 at the same time. Due to the siphon principle, the condensed water in the condensed water tank 2 flows into the stem washing water tank 1 from the second condensed water injection pipe 5. At the same time, tap water is injected into the stem washing water tank 1 from the tap water injection pipe 6, so that the condensed water and tap water are injected at the same time. After the time t _h, the controller 7 closes the second pneumatic valve 51, and after the time t _c, the controller 7 closes the third pneumatic valve 61. At this time, the liquid in the stem washing water tank 1 just reaches the required water volume, and the high water level sensor 13 transmits the detection signal to the high water level indicator light 72, so that the high water level indicator light 72 lights up, indicating that the water injection is completed. At the same time, the water temperature detected by the second temperature sensor 14 can be manually observed on the temperature display screen 73 to determine whether it meets the actual requirements.

It should be noted that the above description is only a preferred embodiment of the present invention and cannot limit the scope of implementation of the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A tobacco stem washing water changing device is characterized by comprising a stem washing water tank, a condensed water storage tank, a condensed water first water injection pipe, a condensed water second water injection pipe, a tap water injection pipe and a controller,

the condensed water tank is positioned above the stem washing water tank, the condensed water tank is connected with the condensed water storage tank through the condensed water first water injection pipe, the condensed water tank is connected with the stem washing water tank through the condensed water second water injection pipe, the stem washing water tank is also connected with the tap water injection pipe,

a circulating water pump is arranged in the stem washing water tank,

the condensed water generated in the silk making workshop is stored in the condensed water storage tank, the controller injects the condensed water into the stem washing water tank through the condensed water first water injection pipe, the condensed water tank and the condensed water second water injection pipe, and simultaneously injects tap water into the stem washing water tank through the tap water injection pipe.

2. The apparatus for changing water of stem washing water for tobacco according to claim 1, wherein the first water injection pipe for condensed water is provided with a first pneumatic valve and a water pump, the second water injection pipe for condensed water is provided with a second pneumatic valve, the tap water injection pipe is provided with a third pneumatic valve, the controller is provided with a water injection button, the water injection button is used for opening the first pneumatic valve, and the closing of the first pneumatic valve is controlled by the controller.

3. The apparatus for changing water of stem washing water for tobacco according to claim 2, wherein the second air-operated valve and the third air-operated valve are connected to the controller, and the controller can control the opening or closing of the second air-operated valve and the third air-operated valve.

4. The stem washing water changing device for cigarettes according to claim 2, wherein a water pump controller is arranged on the water pump, and the water pump controller is connected with the first pneumatic valve.

5. The apparatus for changing water of stem washing water for tobacco according to claim 1, wherein a condensed water level sensor and a first temperature sensor are installed in the condensed water tank, and both the condensed water level sensor and the first temperature sensor are connected with the controller.

6. The stem washing water changing device for cigarettes according to claim 5, wherein an overflow pipe is arranged outside the condensed water tank, the top end position of the overflow pipe is equal to the position of the condensed water level sensor, and the bottom end of the overflow pipe is connected with an external drainage system.

7. The apparatus for changing water of stem washing water for tobacco according to claim 1, wherein a low water level sensor is installed in the stem washing water tank, and the low water level sensor is connected with the controller.

8. The stem washing water changing device for cigarettes according to claim 7, wherein a high water level sensor and a second temperature sensor are further installed in the stem washing water tank, a high water level indicator lamp and a temperature display screen are arranged on the controller, the high water level sensor is connected with the high water level indicator lamp, and the second temperature sensor is connected with the temperature display screen.

9. The apparatus for changing water of stem washing water for tobacco according to claim 1, wherein the stem washing water tank is installed on a water tank bracket, and the condensed water tank is installed on a water tank bracket.

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