Water pretreatment device for cleaning tobacco stems

Abstract

The utility model discloses a pretreatment device for water for cleaning tobacco stems. The pretreatment device comprises a pretreatment water tank, the interior of the pretreatment water tank is sequentially divided into three independent cavities including a first precipitation filtering section, a second filtering section and a pretreatment section through a first partition and a second partition; the first partition is higher than the second partition, and the top of the first partition and the top of the second partition are provided with a first filter screen and a second filter screen respectively; a sewage inlet is formed in one side of the precipitation and filtration section I so as to precipitate and filter sewage, when the horizontal plane in the precipitation and filtration section I is higher than the first partition, the sewage flows into the filtration section II through the first filter screen and flows to the pretreatment section after being filtered by the second filter screen, and a water outlet is formed in the bottom of the pretreatment section. According to the device, sewage is precipitated, filtered, blended and treated into cleaning water meeting the tobacco stem cleaning requirement, and the cleaning water is preheated by utilizing workshop condensate water, so that not only can water be effectively saved, but also the use amount of steam for heating can be saved.

Description

Technical Field

[0001] The utility model relates to the field of tobacco stem cleaning equipment, and more specifically, to a tobacco stem cleaning water pretreatment device. Background Art

[0002] Cigarette manufacturers still regularly discharge water used in the tobacco stem washing process. A stem washer uses clean water at a specific temperature to clean the stems and increase their moisture content. To ensure stem cleanliness and meet production process requirements, water must be replaced at regular intervals throughout the production process, resulting in water waste. Furthermore, large water changes significantly affect the temperature of the stem washer, hindering overall control of the stem washing process. Utility Model Content

[0003] One purpose of the present invention is to provide a new technical solution for a device for pre-treating water for washing tobacco stems, so as to solve the problems raised in the above-mentioned background technology.

[0004] According to a first aspect of the present utility model, there is provided a tobacco stem washing water pretreatment device, comprising a pretreatment water tank;

[0005] The interior of the pretreatment water tank is formed into three independent cavities, namely, a sedimentation filtration stage 1, a filtration stage 2, and a pretreatment stage, by a first partition and a second partition; the height of the first partition is higher than the height of the second partition, and a first filter screen and a second filter screen are respectively provided on the top of the first partition and the second partition;

[0006] A sewage inlet is provided on one side of the sedimentation and filtration section to carry out sedimentation and filtration of the sewage. When the water level in the sedimentation and filtration section is higher than the first partition, the sewage flows into the second filtration section through the first filter screen, and after being filtered through the second filter screen, it flows to the pretreatment section. A water outlet is provided at the bottom of the pretreatment section to discharge the water after the second filtration for tobacco stem washing.

[0007] Optionally, according to the tobacco stem washing water pretreatment device described in the utility model, a first sewage outlet is provided at the bottom of the sedimentation and filtration section, and a first nozzle group is provided at the top of the sedimentation and filtration section on one side close to the sewage inlet to spray and clean the interior of the sedimentation and filtration section.

[0008] Optionally, according to the tobacco stem cleaning water pretreatment device described in the utility model, a second sewage outlet is provided at the bottom of the second filter stage, and a second nozzle group is provided on both sides of the top of the first partition to spray and clean the sedimentation filter stage one, the second filter stage and the first filter screen.

[0009] Optionally, according to the tobacco stem washing water pretreatment device described in the utility model, a first turbidity sensor is provided on the inner wall of the second filter section. When the turbidity of the water in the second filter section is higher than a preset value, the second sewage outlet is opened to drain the sewage in the second filter section, and the second nozzle group is opened synchronously.

[0010] Optionally, according to the water pretreatment device for tobacco stem cleaning described in the utility model, a third sewage outlet is provided at the bottom of the pretreatment section, and a third nozzle group and a fourth nozzle group are respectively provided at the top of the second partition and the side wall of the pretreatment section, the third nozzle group is used for spray cleaning of the second filter and the pretreatment section, and the fourth nozzle group is used for spray cleaning of the pretreatment section.

[0011] Optionally, according to the water pretreatment device for tobacco stem washing described in the utility model, a second turbidity sensor is provided on the inner wall of the pretreatment section. When the turbidity of the water in the pretreatment section is higher than a preset value, the third sewage outlet is opened to drain the sewage in the pretreatment section, and the third nozzle group and the fourth nozzle group are opened synchronously.

[0012] Optionally, according to the pretreatment device for tobacco stem cleaning water described in the utility model, an invasive condensation water coil is provided inside the pretreatment section, and the condensation water interface of the invasive condensation water coil is located on the outside of the pretreatment section to connect the waste heat of the workshop condensation water and heat the cleaning water inside the pretreatment section by heat conduction; and a temperature sensor is provided on the inner wall of the pretreatment section to detect the water temperature inside the pretreatment section in real time.

[0013] Optionally, according to the tobacco stem washing water pretreatment device of the present invention, a liquid level sensor is provided on the top of the side wall of the pretreatment section to detect the washing water level inside the pretreatment section in real time.

[0014] Optionally, according to the tobacco stem cleaning water pretreatment device described in the utility model, a water inlet is also provided on the side wall of the pretreatment section. When the liquid level sensor detects that the cleaning water level in the pretreatment section is at a low level, the water inlet is connected to tap water for timely replenishment.

[0015] Optionally, according to the tobacco stem cleaning water pretreatment device described in the utility model, the side wall of the pretreatment section is located on the upper side of the water inlet and is further provided with an overflow port, the overflow port corresponds to the high liquid level of the cleaning water of the pretreatment section, and the overflow port is in a normally open state.

[0016] The utility model is designed with structures such as sedimentation filtration, spray cleaning, and heat exchange, which can realize fully automatic cleaning of the pretreatment water tank and filter. The utility model can process sewage with substandard turbidity into cleaning water that meets the needs of tobacco stem cleaning through sedimentation, filtration, and blending, and preheat the cleaning water by using the workshop condensate water to preheat, which can not only effectively save water, but also save the amount of steam used for heating. The water used in the tobacco stem washing machine is discharged through the drain outlet at the bottom of the washing machine, and is sent into the pretreatment water tank through the sewage circulation pump. After secondary sedimentation filtration and blending with tap water, the cleaning water that meets the standards is heated by the invasive condensate coil to reach the water temperature required by the tobacco stem washing machine, and then sent back to the tobacco stem washing machine through the clean water circulation pump, realizing the recycling of water resources.

[0017] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0019] Figure 1 This is a schematic structural diagram of the water pretreatment device for washing tobacco stems disclosed in the present utility model.

[0020] Description of reference numerals:

[0021] 101-sewage inlet; 102-first sewage outlet; 103-first nozzle group; 104-second sewage outlet; 105-third sewage outlet; 106-first filter; 107-second nozzle group; 108-second filter; 109-third nozzle group; 110-first turbidity sensor; 111-temperature sensor; 112-second turbidity sensor; 113-liquid level sensor; 114-fourth nozzle group; 115-overflow; 116-water inlet; 117-water outlet; 118-condensate interface; 119-invasive condensate coil; 120-first partition; 121-second partition. DETAILED DESCRIPTION

[0022] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0023] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0024] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0025] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0026] according to Figure 1 As shown, the utility model provides a tobacco stem washing water pretreatment device, including a pretreatment water tank.

[0027] The interior of the pretreatment water tank is formed into three independent cavities, namely the sedimentation filtration stage 1, the filtration stage 2 and the pretreatment stage, through the first partition 120 and the second partition 121; the height of the first partition 120 is higher than the height of the second partition 121, and the tops of the first partition 120 and the second partition 121 are respectively provided with a first filter mesh 106 and a second filter mesh 108.

[0028] A sewage inlet 101 is provided on one side of the sedimentation and filtration section to carry out sedimentation and filtration of the sewage. When the water level in the sedimentation and filtration section is higher than the first partition 120, the sewage flows into the second filtration section through the first filter 106, and after being filtered through the second filter 108, it flows to the pretreatment section. A water outlet 117 is provided at the bottom of the pretreatment section to discharge the water after the second filtration for tobacco stem washing.

[0029] The sewage enters the sedimentation and filtration section of the pretreatment equipment and is left to settle. The liquid level in the sedimentation section continues to rise. When the liquid level is higher than the first filter screen 106, the settled water passes through the first filter screen 106 and enters the second filtration section to filter out large solid particles floating on the liquid surface. When the liquid level in the second filtration section exceeds the second filter screen 108, the cleaning liquid enters the pretreatment section. The cleaning water after the secondary filtration can basically filter out the solid particles in the water.

[0030] Furthermore, a first sewage outlet 102 is provided at the bottom of the first sedimentation and filtration section, and a first nozzle assembly 103 is provided at the top of the section near the sewage inlet 101 to spray and clean the interior of the section. Impurities at the bottom of the first sedimentation and filtration section need to be regularly discharged to prevent excessive sedimentation within the section, which would result in a high sedimentation level and prevent effective sedimentation within the section.

[0031] Furthermore, a second sewage outlet 104 is provided at the bottom of the second filtration stage, and second nozzle groups 107 are provided on both sides of the top of the first partition 120 to spray and clean the sedimentation filtration stage 1, the second filtration stage and the first filter screen 106.

[0032] A first turbidity sensor 110 is provided on the inner wall of the second filter section. When the turbidity of the water in the second filter section is higher than a preset value, the second sewage outlet 104 is opened to drain the sewage in the second filter section, and the second nozzle group 107 is opened simultaneously.

[0033] In this embodiment, the first turbidity sensor 110 installed in the second filtration stage monitors the turbidity of the water in the second filtration stage in real time. If the turbidity of the water in the second filtration stage seriously exceeds the standard, the second sewage outlet 104 of the second filtration stage will be opened to discharge sewage to prevent sewage with excessive turbidity from entering the pretreatment stage. After the sewage discharge is completed, the second nozzle group 107 is automatically started to scan the water pool and the first filter screen 106 of the second filtration stage through the second nozzle group 107. After the cleaning timer ends, the second sewage outlet 104 at the bottom is closed to enter the next sewage treatment process.

[0034] Furthermore, a third sewage outlet 105 is provided at the bottom of the pretreatment section, and a third nozzle group 109 and a fourth nozzle group 114 are respectively provided at the top of the second partition 121 and the side wall of the pretreatment section. The third nozzle group 109 is used for spray cleaning of the second filter screen 108 and the pretreatment section, and the fourth nozzle group 114 is used for spray cleaning of the pretreatment section.

[0035] A second turbidity sensor 112 is provided on the inner wall of the pretreatment section. When the turbidity of the water in the pretreatment section is higher than a preset value, the third sewage outlet 105 is opened to drain the sewage in the pretreatment section, and the third nozzle group 109 and the fourth nozzle group 114 are opened synchronously.

[0036] In this embodiment, the operation method is the same as that in the above-mentioned second filtration stage. The second turbidity sensor 112 installed in the pretreatment section monitors the turbidity of the water in the pretreatment section in real time. If the turbidity of the water in the pretreatment section seriously exceeds the standard, the third sewage outlet 105 of the pretreatment section will be opened for sewage discharge to prevent sewage with excessive turbidity from entering the subsequent cleaning stage. After the sewage discharge is completed, the third nozzle group 109 and the fourth nozzle group 114 are automatically started to scan the water pool and the second filter screen 108 of the pretreatment section through the third nozzle group 109, and the fourth nozzle group 114 cleans the parts that the third nozzle group 109 cannot spray. After the cleaning timer ends, the third sewage outlet 105 at the bottom is closed to enter the next sewage treatment process.

[0037] Furthermore, an intrusive condensation water coil 119 is provided inside the pretreatment section, and the condensation water interface 118 of the intrusive condensation water coil 119 is located outside the pretreatment section to connect the waste heat of the workshop condensation water and heat the cleaning water inside the pretreatment section through heat conduction; and a temperature sensor 111 is provided on the inner wall of the pretreatment section to detect the water temperature inside the pretreatment section in real time.

[0038] In this embodiment, the distributed workshop condensate is installed at the bottom of the pretreatment section and flows through the intrusive condensate coil 119. The water level of the pretreatment section submerges the intrusive condensate coil 119. The waste heat of the workshop condensate is used to heat the cleaning water through heat exchange. The condensate will not pollute the cleaning water during the reheating process. The intrusive condensate coil 119 in the pretreatment section uses the waste heat of the workshop condensate to heat the cleaning water through heat conduction. The flow rate of the condensate in the coil is controlled according to the temperature difference between the water temperature sensor value and the standard value.

[0039] Furthermore, a liquid level sensor 113 is installed at the top of the side wall of the pretreatment section to monitor the cleaning water level inside the pretreatment section in real time. A water inlet 116 is also installed on the side wall of the pretreatment section. When the liquid level sensor 113 detects that the cleaning water level in the pretreatment section is low, the water inlet 116 is connected to tap water for timely replenishment. An overflow port 115 is also installed on the side wall of the pretreatment section above the water inlet 116. Overflow port 115 corresponds to the high liquid level of the cleaning water in the pretreatment section and is normally open.

[0040] In this embodiment, water passing through the second filter 108 enters the pretreatment section. A liquid level sensor 113 is installed in the pretreatment section to monitor the liquid level in real time. When the pretreatment section liquid level falls below the low level, water is replenished by opening the tap water replenishment valve. Replenishment stops when the liquid level rises above the low level. If the liquid level falls below the high level but rises above the low level and the turbidity of the pretreatment section water exceeds the water use standard, the turbidity is reduced by blending with tap water. If the liquid level rises above the high level and the turbidity of the pretreatment section water exceeds the water use standard, the third drain port 105 at the bottom is opened to drain the water and then add tap water to blend the water to reduce the turbidity until the turbidity reaches the standard.

[0041] During the shutdown and maintenance phase, the water in the entire pretreatment water tank is drained, and the entire device is automatically cleaned through the automatic cleaning nozzle group, including the coil cleaning of the pretreatment section.

[0042] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A tobacco stem washing water pretreatment device, characterized in that: Includes pre-treatment water tank; The interior of the pretreatment water tank is formed into three independent cavities, namely, a sedimentation filtration stage 1, a filtration stage 2, and a pretreatment stage, by a first partition and a second partition; the height of the first partition is higher than the height of the second partition, and a first filter screen and a second filter screen are respectively provided on the top of the first partition and the second partition; A sewage inlet is provided on one side of the sedimentation and filtration stage to carry out sedimentation and filtration of the sewage. When the water level in the sedimentation and filtration stage is higher than the first partition, the sewage flows through the first filter screen into the second filtration stage, and after being filtered by the second filter screen, flows to the pretreatment stage. A water outlet is provided at the bottom of the pretreatment stage to discharge the water after the secondary filtration for use in tobacco stem washing. A first sewage outlet is provided at the bottom of the sedimentation and filtration section, and a first nozzle group is provided at the top of the sedimentation and filtration section on one side close to the sewage inlet, so as to spray and clean the interior of the sedimentation and filtration section.

2. The tobacco stem washing water pretreatment device according to claim 1, characterized in that: A second sewage outlet is provided at the bottom of the second filtration stage, and second nozzle groups are provided on both sides of the top of the first partition to spray and clean the sedimentation filtration stage one, the second filtration stage and the first filter screen.

3. The tobacco stem washing water pretreatment device according to claim 2, characterized in that: A first turbidity sensor is provided on the inner wall of the second filter section. When the turbidity of the water in the second filter section is higher than a preset value, the second sewage outlet is opened to drain the sewage in the second filter section, and the second nozzle group is opened synchronously.

4. The tobacco stem washing water pretreatment device according to claim 1, characterized in that: A third sewage outlet is provided at the bottom of the pretreatment section, and a third nozzle group and a fourth nozzle group are respectively provided at the top of the second partition and the side wall of the pretreatment section. The third nozzle group is used for spray cleaning of the second filter screen and the pretreatment section, and the fourth nozzle group is used for spray cleaning of the pretreatment section.

5. The tobacco stem washing water pretreatment device according to claim 4, characterized in that: A second turbidity sensor is provided on the inner wall of the pretreatment section. When the turbidity of the water in the pretreatment section is higher than a preset value, the third sewage outlet is opened to drain the sewage in the pretreatment section, and the third nozzle group and the fourth nozzle group are opened synchronously.

6. The tobacco stem washing water pretreatment device according to claim 1, characterized in that: An intrusive condensation water coil is provided inside the pretreatment section, and the condensation water interface of the intrusive condensation water coil is located on the outside of the pretreatment section to connect the waste heat of the workshop condensation water and heat the cleaning water inside the pretreatment section through heat conduction; and a temperature sensor is provided on the inner wall of the pretreatment section to detect the water temperature inside the pretreatment section in real time.

7. The tobacco stem washing water pretreatment device according to claim 1, characterized in that: A liquid level sensor is provided on the top of the side wall of the pretreatment section to detect the liquid level of the cleaning water inside the pretreatment section in real time.

8. The tobacco stem washing water pretreatment device according to claim 7, characterized in that: A water inlet is also provided on the side wall of the pretreatment section. When the liquid level sensor detects that the cleaning water level in the pretreatment section is at a low level, the water inlet is connected to tap water for timely water replenishment.

9. The tobacco stem washing water pretreatment device according to claim 8, characterized in that: The side wall of the pretreatment section is located above the water inlet and is further provided with an overflow port, which corresponds to the high liquid level of the cleaning water in the pretreatment section and is in a normally open state.

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