CN104587803B - Liquid distribution disturbance device for plate-type film falling devices - Google Patents
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- 239000007788 liquid Substances 0.000 title claims abstract description 55
- 238000009826 distribution Methods 0.000 title claims abstract description 20
- 239000011552 falling film Substances 0.000 claims abstract description 47
- 239000010408 film Substances 0.000 claims abstract description 25
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims 5
- 238000010521 absorption reaction Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 4
- 238000005381 potential energy Methods 0.000 abstract description 4
- 239000002341 toxic gas Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 238000004364 calculation method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
本发明公开了用于板式降膜器的布液扰动装置，包括降膜板和带齿中空滚筒；其特征在于：该降膜板正面的顶部设有溢流槽；该溢流槽与降膜板构成“7”字形；所述溢流槽底面为斜面，在斜面的底端沿横向设置有溢流口，该溢流口与降膜板相邻；所述带齿中空滚筒沿横向设置在溢流槽的下方；该带齿中空滚筒通过滚动轴承安装在固定座上；固定座固定在降膜板上；本发明依靠液膜自身重力势能推动带齿中空滚筒转动，带齿中空滚筒促使液膜在降膜板表面横向均匀铺展；在转动过程中增加了气液界面的扰动，促进了对污染物或者有毒性气体进行吸收或回收；本发明结构简单，处理成本低，效率高，能够有效的吸收污染物，可广泛运用于化工、环保等领域。
The invention discloses a liquid distribution disturbance device for a plate-type falling film device, which comprises a falling film plate and a toothed hollow roller; it is characterized in that: an overflow groove is arranged on the top of the front of the falling film plate; the overflow groove is connected with the falling film The plate forms a "7"shape; the bottom surface of the overflow tank is a slope, and an overflow port is arranged laterally at the bottom end of the slope, and the overflow port is adjacent to the falling film plate; the toothed hollow roller is arranged laterally on the The bottom of the overflow tank; the toothed hollow roller is installed on the fixed seat through rolling bearings; the fixed seat is fixed on the falling film plate; the invention relies on the gravity potential energy of the liquid film itself to drive the toothed hollow roller to rotate, and the toothed hollow roller promotes the liquid film Spread evenly across the surface of the falling film plate; increase the disturbance of the gas-liquid interface during the rotation process, and promote the absorption or recovery of pollutants or toxic gases; the invention has simple structure, low processing cost, high efficiency, and can effectively It can absorb pollutants and can be widely used in chemical industry, environmental protection and other fields.
Description
技术领域technical field
本发明涉及板式降膜器,具体涉及用于板式降膜器的布液扰动装置。The invention relates to a plate type falling film device, in particular to a liquid distribution disturbance device for a plate type falling film device.
背景技术Background technique
降膜吸收过程具有效率高、结构简单、能耗小等特点，在工程热物理、材料制备和化学工程等工业领域也有着非常广泛的应用。其主要对生产过程中产生的污染物或者有毒性气体进行吸收或回收，既可保护环境又可实现资源的重复利用，节约生产成本。常见的降膜吸收装置一般以自然波动或波纹板强制波动为主，自然波动时波动较小，抑制了其吸收的最佳效果，吸收液往往达不到饱和即以流出，造成了资源的浪费；而采用波纹板降膜时，很容易造成布膜不均匀、断膜的发生。The falling film absorption process has the characteristics of high efficiency, simple structure, and low energy consumption. It is also widely used in industrial fields such as engineering thermophysics, material preparation, and chemical engineering. It mainly absorbs or recycles pollutants or toxic gases generated in the production process, which can not only protect the environment but also realize the reuse of resources and save production costs. Common falling film absorption devices are generally based on natural fluctuations or forced fluctuations of corrugated plates. The fluctuations are small during natural fluctuations, which inhibits the best absorption effect. The absorption liquid often flows out when it is not saturated, resulting in a waste of resources. ; And when the corrugated plate is used to drop the film, it is easy to cause uneven film distribution and film breakage.
发明内容Contents of the invention
本发明所要解决的技术问题在于提供用于板式降膜器的布液扰动装置。The technical problem to be solved by the present invention is to provide a liquid distribution disturbance device for a plate-type falling film device.
为了解决上述技术问题，本发明的第一个技术方案是，用于板式降膜器的布液扰动装置，包括降膜板和带齿中空滚筒；其特点是：该降膜板正面的顶部设有溢流槽；该溢流槽与降膜板构成“7”字形；所述溢流槽底面为斜面，在斜面的底端沿横向设置有溢流口，该溢流口与降膜板相邻；所述带齿中空滚筒沿横向设置在溢流槽的下方；该带齿中空滚筒通过滚动轴承安装在固定座上；固定座固定在降膜板上。In order to solve the above-mentioned technical problems, the first technical solution of the present invention is that the liquid distribution disturbance device for plate-type falling film device includes a falling film plate and a toothed hollow roller; There is an overflow tank; the overflow tank and the falling film plate form a "7" shape; the bottom surface of the overflow tank is a slope, and an overflow port is arranged laterally at the bottom of the slope, and the overflow port is connected to the falling film plate Adjacent; the toothed hollow drum is arranged laterally below the overflow tank; the toothed hollow drum is mounted on a fixed seat through rolling bearings; the fixed seat is fixed on the falling film plate.
本发明的溢流口流出的液膜流到带齿中空滚筒上，依靠液膜自身重力势能推动带齿中空滚筒转动，带齿中空滚筒在转动的同时促使液膜在降膜板表面横向均匀铺展；由于带齿中空滚筒表面凸凹不平，在转动过程中增加了气液界面的扰动；这种设计方式不仅达到了均匀布膜的效果，而且不需要外加额外的驱动装置，既节约了能源又达到增强气液界面的扰动的目的，达到了节能减排的效果。The liquid film flowing out of the overflow port of the present invention flows onto the toothed hollow roller, relying on the gravity potential energy of the liquid film itself to drive the toothed hollow roller to rotate, and the toothed hollow roller promotes the liquid film to spread evenly on the surface of the falling film plate laterally while rotating ;Due to the uneven surface of the toothed hollow roller, the disturbance of the gas-liquid interface is increased during the rotation; this design method not only achieves the effect of uniform film distribution, but also does not require additional driving devices, which not only saves energy but also achieves The purpose of enhancing the disturbance of the gas-liquid interface has achieved the effect of energy saving and emission reduction.
为了防止液体由溢流口流出时由于表面张力的作用沿着溢流槽的底部流动，将所述溢流槽底面设置为斜面。In order to prevent the liquid from flowing out from the overflow opening along the bottom of the overflow tank due to the effect of surface tension, the bottom surface of the overflow tank is set as an inclined plane.
根据本发明所述的用于板式降膜器的布液扰动装置的优选方案，齿形及分布，所述带齿中空滚筒的半径满足：其中：液体单位时间内流出的质量为ml，液体下落遇到滚筒后速度变化为Δv，滚筒的半径为r，滚筒的质量为mb，Δω为滚筒启动时刻的角速度增量。According to the preferred scheme, tooth shape and distribution of the liquid distribution and disturbance device used in the plate falling film device of the present invention, the radius of the toothed hollow drum satisfies: Among them: the mass of the liquid flowing out per unit time is ml , the velocity change of the liquid after falling into the drum is Δv, the radius of the drum is r, the mass of the drum is m b , and Δω is the angular velocity increment at the moment the drum starts.
根据本发明所述的用于板式降膜器的布液扰动装置的优选方案，所述带齿中空滚筒采用半圆形齿，该半圆形齿沿中空滚筒径向分布；齿的数量与齿高的关系可由公式计算；齿间距l可由公式计算；其中，齿间距为两个相邻的齿顶端之间的距离，h为齿高,n为齿的数量,r为带齿中空滚筒(6)的半径。According to the preferred solution of the liquid distribution and disturbance device for the plate-type falling film device of the present invention, the toothed hollow cylinder adopts semicircular teeth, and the semicircular teeth are distributed radially along the hollow cylinder; The high relation can be given by the formula Calculation; the tooth spacing l can be calculated by the formula Calculation; wherein, the tooth spacing is the distance between two adjacent tooth tips, h is the tooth height, n is the number of teeth, and r is the radius of the toothed hollow cylinder (6).
根据本发明所述的用于板式降膜器的布液扰动装置的优选方案，在该降膜板的反面设置调距手柄，调距手柄的一端套装有弹簧；调距手柄插入降膜板与固定座连接。通过设置调距手柄，可以调节带齿中空滚筒与降膜板的水平间距，以便在生产过程中根据工况对液膜厚度及波动大小与频率进行调节，以达到最佳的吸收效果。According to the preferred scheme of the liquid distribution disturbance device for plate-type falling film device of the present invention, a distance-adjusting handle is arranged on the reverse side of the falling film plate, and a spring is sleeved on one end of the distance-adjusting handle; the distance-adjusting handle is inserted into the falling film plate and Mount connection. By setting the distance adjustment handle, the horizontal distance between the toothed hollow roller and the falling film plate can be adjusted, so that the liquid film thickness, fluctuation size and frequency can be adjusted according to the working conditions during the production process, so as to achieve the best absorption effect.
根据本发明所述的用于板式降膜器的布液扰动装置的优选方案，所述溢流口为长条形槽道。According to the preferred solution of the liquid distribution and disturbance device used in the plate-type falling film device of the present invention, the overflow port is an elongated channel.
根据本发明所述的用于板式降膜器的布液扰动装置的优选方案，所述固定座由上盖板和下盖板构成，上盖板和下盖板呈半圆环状，上盖板和下盖板通过螺栓固套在滚动轴承上。According to the preferred solution of the liquid distribution and disturbance device for plate-type falling film device of the present invention, the fixed seat is composed of an upper cover plate and a lower cover plate, the upper cover plate and the lower cover plate are in the shape of a semicircle, and the upper cover plate and the lower cover plate are sheathed on the rolling bearing through bolts.
本发明所述的用于板式降膜器的布液扰动装置的有益效果是：本发明依靠液膜自身重力势能推动带齿中空滚筒转动，带齿中空滚筒促使液膜在降膜板表面横向均匀铺展；在转动过程中增加了气液界面的扰动，促进了对污染物或者有毒性气体进行吸收或回收；本发明不仅达到了均匀布膜的效果，而且不需要外加额外的驱动装置，就能达到增强气液界面的扰动的目的，既节约了能源又能，又能达到最佳的吸收效果；本发明结构简单，处理成本低，效率高，能够有效的吸收生产过程中产生的污染物，具有广泛的应用前景，可广泛运用于化工、环保等领域。The beneficial effect of the liquid distribution disturbance device for the plate-type falling film device of the present invention is: the present invention relies on the gravity potential energy of the liquid film itself to drive the toothed hollow roller to rotate, and the toothed hollow roller promotes the liquid film to be uniform in the horizontal direction on the surface of the falling film plate Spreading; the disturbance of the gas-liquid interface is increased during the rotation process, which promotes the absorption or recovery of pollutants or toxic gases; the invention not only achieves the effect of uniform film distribution, but also can To achieve the purpose of enhancing the disturbance of the gas-liquid interface, it not only saves energy, but also achieves the best absorption effect; the invention has simple structure, low processing cost, high efficiency, and can effectively absorb pollutants generated in the production process. It has broad application prospects and can be widely used in chemical industry, environmental protection and other fields.
附图说明Description of drawings
图1为本发明所述的用于板式降膜器的布液扰动装置立体结构示意图。Fig. 1 is a schematic diagram of the three-dimensional structure of a liquid distribution and disturbance device for a plate-type falling film device according to the present invention.
图2为本发明所述的用于板式降膜器的布液扰动装置结构示意图。Fig. 2 is a schematic structural view of the liquid distribution and disturbance device used in the plate-type falling film device according to the present invention.
图3是带齿中空滚筒6的剖视图。FIG. 3 is a sectional view of the toothed hollow cylinder 6 .
图4是溢流槽3底部示意图。FIG. 4 is a schematic diagram of the bottom of the overflow tank 3 .
具体实施方式detailed description
下面结合实施例对本发明作进一步的具体描述，但本发明的实施方式不限于此。The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.
参见图1至图4，用于板式降膜器的布液扰动装置，包括降膜板10和带齿中空滚筒6；该降膜板10正面的顶部设有溢流槽3；该溢流槽3与降膜板10构成“7”字形；所述溢流槽3底面为斜面，在斜面的底端沿横向设置有溢流口2，该溢流口2与降膜板10相近邻；所述带齿中空滚筒6沿横向设置在溢流槽3的下方，以使溢流口2流出的液膜流到带齿中空滚筒6的径向边缘上；该带齿中空滚筒6通过其两端设置的滚动轴承8安装在固定座7、9上；固定座7、9固定在降膜板10上。Referring to Fig. 1 to Fig. 4, the liquid distribution disturbing device for the plate type falling film device includes a falling film plate 10 and a toothed hollow cylinder 6; the top of the falling film plate 10 is provided with an overflow tank 3; the overflow tank 3 and the falling film plate 10 form a "7" shape; the bottom surface of the overflow tank 3 is a slope, and an overflow port 2 is arranged laterally at the bottom of the slope, and the overflow port 2 is adjacent to the falling film plate 10; The toothed hollow drum 6 is horizontally arranged below the overflow tank 3, so that the liquid film flowing out of the overflow port 2 flows to the radial edge of the toothed hollow drum 6; the toothed hollow drum 6 passes through its two ends The set rolling bearing 8 is installed on the fixed seats 7 and 9; the fixed seats 7 and 9 are fixed on the falling film plate 10.
在具体实施例中，所述带齿中空滚筒6的半径满足：其中：液体单位时间内流出的质量为ml，液体下落遇到滚筒后速度变化为Δv，滚筒的半径为r，滚筒的质量为mb，Δω为中空滚筒启动时刻的角速度增量。In a specific embodiment, the radius of the toothed hollow drum 6 satisfies: Among them: the mass of the liquid flowing out per unit time is ml , the speed change of the liquid after falling into the drum is Δv, the radius of the drum is r, the mass of the drum is m b , and Δω is the angular velocity increment at the start of the hollow drum.
所述带齿中空滚筒6采用半圆形齿，该半圆形齿沿中空滚筒径向分布；齿的数量与齿高的关系可由公式计算；齿间距l可由公式计算；其中，齿间距为两个相邻的齿顶端之间的距离，h为齿高,n为齿的数量,r为滚筒的半径。The toothed hollow drum 6 adopts semicircular teeth, and the semicircular teeth are distributed radially along the hollow drum; the relationship between the number of teeth and the tooth height can be obtained by the formula Calculation; the tooth spacing l can be calculated by the formula Calculation; where the tooth pitch is the distance between two adjacent tooth tips, h is the tooth height, n is the number of teeth, and r is the radius of the drum.
所述溢流口2为长条形槽道；所述固定座7、9由上盖板7和下盖板9构成，上盖板7和下盖板9呈半圆环状，通过螺栓11固套在滚动轴承8上；下盖板9的一端向外延伸，形成吊耳，吊耳上设置有外螺纹，下盖板9通过螺纹固定在降膜板10上；该降膜板10的反面设置有调距手柄4，调距手柄4的一端套装有弹簧5；调距手柄4插入降膜板10内并与下盖板9连接。转动调距手柄4，可以调整带齿中空滚筒6与降膜板10的水平间距。The overflow port 2 is a strip-shaped channel; the fixed seats 7, 9 are composed of an upper cover plate 7 and a lower cover plate 9, and the upper cover plate 7 and the lower cover plate 9 are in the shape of a semicircle, and are fixed by bolts 11. Set on the rolling bearing 8; one end of the lower cover plate 9 extends outward to form a lifting lug, and the lifting lug is provided with external threads, and the lower cover plate 9 is fixed on the falling film plate 10 through threads; the reverse side of the falling film plate 10 is set There is a distance-adjusting handle 4, and one end of the distance-adjusting handle 4 is covered with a spring 5; the distance-adjusting handle 4 is inserted into the falling film plate 10 and connected with the lower cover plate 9. Rotate the distance adjustment handle 4 to adjust the horizontal distance between the toothed hollow cylinder 6 and the falling film plate 10 .
本发明的工作原理是：液膜从溢流槽3的顶部1加入，从溢流口2流出，流到带齿中空滚筒6上，依靠液膜自身重力势能推动带齿中空滚筒6转动。设液体单位时间内流出的质量为ml，液体下落遇到滚筒后速度变化为Δv，滚筒的半径为r，质量为mb，开始工作时，在Δt时间内中空滚筒从静止加速到ωrads。只要液体提供的转矩大于中空滚筒自身的转动惯量即可以带动转筒转动，即：即可，Δt可以消掉，最终只要满足带齿中空滚筒6在转动的同时促使液膜在降膜板10表面横向均匀铺展，达到了均匀布膜的效果；并且，由于带齿中空滚筒表面凸凹不平，在转动过程中增加了气液界面的扰动，促进了对污染物或者有毒性气体进行吸收或回收。The working principle of the present invention is: the liquid film is added from the top 1 of the overflow tank 3, flows out from the overflow port 2, and flows onto the toothed hollow cylinder 6, and the toothed hollow cylinder 6 is driven to rotate by the gravity potential energy of the liquid film itself. Assuming that the mass of the liquid flowing out per unit time is ml , the speed change of the liquid falling into the drum is Δv, the radius of the drum is r, and the mass is m b . When starting to work, the hollow drum accelerates from rest to ωrads within Δt time. As long as the torque provided by the liquid is greater than the moment of inertia of the hollow drum itself, it can drive the drum to rotate, that is: That is, Δt can be eliminated, and finally as long as it satisfies While the toothed hollow drum 6 is rotating, the liquid film is evenly spread laterally on the surface of the falling film plate 10, achieving the effect of uniform film distribution; and, due to the uneven surface of the toothed hollow drum, the air-liquid interface is increased during the rotation process. Disturbance, which promotes the absorption or recovery of pollutants or toxic gases.
在具体的应用过程中，可以通过改变带齿中空滚筒的半径、齿数、齿高以及通过调距手柄4调整带齿中空滚筒6与降膜板10的水平间距等参数，以达到最佳的吸收效果。In the specific application process, the parameters such as changing the radius, number of teeth and tooth height of the toothed hollow roller and adjusting the horizontal distance between the toothed hollow roller 6 and the falling film plate 10 through the distance adjustment handle 4 can be used to achieve the best absorption. Effect.
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Inventor after: Ding Yudong Inventor after: Zhao Linlin Inventor after: Zhu Shun Inventor after: Liao Qiang Inventor after: Chen Rong Inventor after: Wang Hong Inventor after: Ye Dingding Inventor after: Li Jun Inventor after: Huang Yun Inventor before: Ding Yudong Inventor before: Zhao Linlin Inventor before: Zhu Xun Inventor before: Liao Qiang Inventor before: Chen Rong Inventor before: Wang Hong Inventor before: Ye Dingding Inventor before: Li Jun Inventor before: Huang Yun |
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