Precipitation device for deep desulfurization and cyanogen removal of coking wastewater

Abstract

The invention relates to the technical field of solid-liquid separation, in particular to a coking wastewater deep desulfurization and cyanogen removal precipitation device which comprises a support, a protective shell, a feeding port, a propeller and a driving motor. The support is installed on the ground, the protective shell is installed on the support, the feeding port is formed in the side face of the upper portion of the protective shell, the propeller is installed on the protective shell, and the driving motor is installed in the middle of the propeller; the device further comprises a sealing shell, a filter pressing mechanism, a stirring mechanism and a switching mechanism; the sealing shell is arranged in the protection shell, the filter pressing mechanism is installed below the propeller, the stirring mechanism is installed in the middle of the sealing shell, the switching mechanism is installed below the stirring mechanism, and the filter pressing mechanism is driven by the propeller to press a coking wastewater solid-liquid mixture on the periphery of the stirring mechanism. And the switching mechanism is opened after the filter pressing is completed, so that solid substances are discharged.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid separation, and in particular to a precipitation device for deep desulfurization and cyanide removal of coking wastewater. Background Art

[0002] Among industrial wastewater, wastewater generated during coal coking, coal gas purification, chemical product recovery and chemical product refining is called coking wastewater. Coking wastewater is a typical toxic and difficult-to-degrade organic wastewater, which mainly comes from the initial cooling of coke oven gas and production water in the coking production process as well as steam condensation wastewater. Due to its complex composition and high toxicity, the treatment of coking wastewater has always been one of the difficult problems in the field of industrial wastewater treatment.

[0003] At present, the desulfurization and cyanide removal treatment methods for coking wastewater mainly include the use of soluble iron salt precipitation reagents to form sulfur element precipitation and cyanide-like precipitation, and then solid-liquid separation. However, this method has some problems in the actual operation process. The usual treatment process is to pass the coking wastewater into a sedimentation tank, add a flocculant and use a stirring method to allow the flocculant to flocculate and settle the impurities in the wastewater. After the flocculation and sedimentation are completed, an upper layer of clear water and a lower layer of sediment will be formed in the sedimentation tank. Subsequently, the separation of the water body and the sediment is achieved by extracting the upper layer of water and discharging the lower layer of sediment, thereby achieving the purpose of purifying the coking wastewater.

[0004] However, in actual operation, when the upper water layer is extracted, the sediment in the lower layer is often re-mixed into the upper water layer due to the large disturbance. This phenomenon causes the extracted upper water layer to contain more debris, which in turn affects the purification effect of coking wastewater. Due to this problem, how to improve the purification efficiency of coking wastewater while ensuring the desulfurization and cyanide removal effect has become an urgent problem to be solved.

[0005] For example, the Chinese authorized patent "A coking wastewater treatment and reuse device" with application number CN202211420212.6 includes: a tank body; a mounting plate arranged on the tank body; a main shaft rotatably arranged on the mounting plate; a separation barrel arranged on the main shaft, the separation barrel wall surface has a plurality of through holes, the outer wall has an annular separation piece, the annular separation piece has an annular groove one and an annular inclined surface; a grinding barrel is arranged on the main shaft through a bearing and is connected to the mounting plate, the main shaft rotates relative to the grinding barrel, the grinding barrel is located inside the separation barrel, the open end of the grinding barrel has an annular guide piece, the inner side wall of the separation barrel has an annular groove two, and the end of the annular guide piece extends into the annular groove two; there are a number of grinding wings, all of which are arranged on the main shaft and located inside the grinding barrel.

[0006] Although the above-mentioned prior art has certain progress, there is still a possibility that the solid matter may be mixed into the liquid matter during the working process.

[0007] In view of the above situation, in order to overcome the above technical problems, the present invention designs a precipitation device for deep desulfurization and cyanide removal of coking wastewater, which solves the above technical problems. Summary of the invention

[0008] The technical purpose to be achieved by the present invention is to design a precipitation device for deep desulfurization and cyanide removal of coking wastewater, change the existing solid-liquid separation method, and realize rapid solid-liquid separation by liquid filter press.

[0009] In order to achieve the above technical objectives, the present invention provides the following technical solutions: A coking wastewater treatment device includes a bracket, a protective shell, a feed port, a propeller and a drive motor; the bracket is installed on the ground, the protective shell is installed on the bracket, the feed port is opened on the upper side of the protective shell, the propeller is installed on the top of the protective shell, and the drive motor is installed in the middle of the propeller. In addition, the device also includes a sealing shell, a filter press mechanism, a stirring mechanism and a switch mechanism. Among them, the sealing shell is arranged inside the protective shell to ensure the sealing during the treatment process and effectively prevent the leakage of wastewater. The filter press mechanism is installed under the propeller and is used to filter the solid-liquid mixture in the wastewater. The stirring mechanism is located in the middle of the sealed shell, and promotes the uniform distribution of impurities in the wastewater through stirring to improve the treatment effect. The switch mechanism is installed under the stirring mechanism to control the discharge of solid matter.

[0010] The filter press mechanism includes a filter press plate, a diverter rubber ring, a filter press ring and a filter press assembly. The filter press plate is installed under the propeller to support and filter. The diverter rubber ring is installed on the top of the filter press plate to help the wastewater to be evenly distributed and avoid local excessive accumulation. The filter press ring is located at the edge of the filter press plate, and its cross-sectional shape is a right triangle. This design helps to enhance the sealing performance and structural strength of the edge. The filter press assembly is arranged on the filter press plate in the form of a circular array, and a plurality of filter holes are used to achieve efficient filtration and solid-liquid separation of wastewater. This multi-level design ensures high efficiency and stability in the wastewater treatment process.

[0011] There are 2-4 diverter rubber rings, which are used to divert more liquid substances to the filter press assemblies arranged on both sides when the solid substances are filtered during operation, thereby improving the filter press efficiency. Multiple diverter rubber rings are coaxially and differently arranged, and the diverter rubber rings are arranged in the middle of two adjacent filter press assemblies; this design can significantly improve the filter press efficiency. By effectively diverting the liquid substances to the filter press assemblies on both sides, the discharge speed of the liquid can be accelerated, and the residence time of the solid-liquid mixture on the filter press plate can be reduced, thereby improving the overall processing efficiency. The design of multiple coaxial and differently arranged diverter rubber rings can optimize the pressure distribution. During the filter press process, diverter rubber rings of different diameters can evenly disperse the pressure, avoid wear or damage caused by excessive pressure on a single diverter rubber ring, and improve the durability and stability of the device.

[0012] The filter press assembly includes a filter press hole, a through groove and a filter press membrane. The filter press hole is provided on the filter press plate, and its cross-sectional shape is designed to be a trapezoid, with the bottom edge near the top of the filter press plate being longer. Such a design helps to increase the filtration area and improve the filtration efficiency. The through groove is provided below the filter press hole, serving as a channel for liquid circulation to ensure that the liquid can pass smoothly during the filtration process. The filter press membrane is arranged in the through groove in the form of a linear array, playing a key role in filtering and separating solids and liquids. The trapezoidal shape of the filter press hole can enhance the stability of the filter hole, prevent the aperture from being deformed, and help to extend the service life.

[0013] The stirring mechanism includes a stirring shaft, a mounting groove, a rotating rod, a rotating column and a stirring assembly. The stirring shaft is installed below the driving motor and realizes rotational motion through the drive of the motor. The mounting groove is provided on the surface of the stirring shaft for fixing and guiding the movement of the rotating rod. The rotating rod is installed inside the mounting groove and can rotate synchronously with the rotation of the stirring shaft. The rotating column is installed below the stirring shaft to further transmit the rotational power to the stirring assembly. The stirring assembly is installed on the rotating rod and is responsible for stirring in the wastewater. The direct connection between the stirring shaft and the driving motor ensures the efficient transmission of the stirring mechanism and reduces energy loss. Secondly, the matching design of the mounting groove and the rotating rod ensures that the rotating rod is stable and reliable during the rotation process, avoiding jitter and wear during operation.

[0014] The stirring assembly includes a swing sleeve, a stirring column and a stirring blade. The swing sleeve is mounted on the rotating rod so that it can swing freely during rotation. The stirring column is mounted on the side of the swing sleeve to provide a stable support for the stirring blade. The stirring blade is mounted on the surface of the stirring column and is designed to be spiral. The spiral stirring blade can generate a strong vortex during the stirring process, enhance the stirring effect, and evenly distribute the impurities in the wastewater, thereby improving the treatment efficiency. This structural design not only increases the coverage of the stirring, but also improves the uniformity and effect of the wastewater treatment process.

[0015] The switch mechanism includes a valve disc, a rotating groove, a matching protrusion, a matching groove, a spring rod, a telescopic rod, a control cylinder and a switch control shaft. The valve disc is installed at the lower end of the sealing shell, and two valve discs are provided. A rotating groove is provided in the middle of each valve disc to ensure the flexible rotation of the valve. The two different valve discs are respectively provided with matching protrusions and matching grooves on the side. The design of the matching protrusions and matching grooves enables the valve discs to be accurately docked and locked, ensuring a good sealing effect when closed. One end of the spring rod is fixed under the valve disc, and a reset function is provided through elastic action to ensure that the valve automatically returns to its position after operation.

[0016] The valve disc includes a base plate, a guide plate and a guide surface. The base plate is arranged at the bottom of the valve disc to provide a stable foundation. The guide plate is installed above the base plate to guide the flow of wastewater. The guide surface is arranged at the two ends of the guide plate. Through the arc design, the fluid resistance is effectively reduced and the smooth flow of wastewater is promoted. This combined design not only enhances the structural stability of the valve disc, but also optimizes the fluid flow path and improves the efficiency and effect of wastewater treatment.

[0017] The guide plate is configured as an annular plate, and the guide plate is mirrored along the central axis of the chassis plate, and the angle of the guide plate is set to 120-160°. The cross-sectional shape of the guide plate is set to a trapezoidal shape with a short inside and a long outside, and the guide surface is set to an arc surface. The design of the annular plate enables the guide plate to evenly surround the entire device, ensuring that the wastewater can be evenly distributed during the treatment process. This uniform distribution helps to improve the efficiency and effectiveness of wastewater treatment and avoid over-treatment or under-treatment of local areas. The trapezoidal design with a cross-sectional shape of a short inside and a long outside increases the structural strength of the guide plate. Such a cross-sectional shape makes the guide plate more stable when subjected to force, less prone to deformation or damage, and extends the service life of the device. The arc guide surface design can effectively reduce fluid resistance.

[0018] The beneficial effects of the present invention are as follows: 1. The present invention sets a filter press mechanism and a stirring mechanism, optimizes the sedimentation process, and effectively prevents the lower sediment from re-mixing during the filter press process. On the one hand, the stirring mechanism can improve the sedimentation effect, reduce the reaction time, and thus speed up the work efficiency. On the other hand, the filter press mechanism essentially changes the problem in the prior art that the suction of the upper water body may affect the purity of the water body. It not only improves the purification effect of coking wastewater, but also effectively solves the problem of poor purification effect caused by the disturbance of the upper water body in the prior art. It also improves the treatment efficiency of coking wastewater, reduces the discharge of pollutants, and provides new ideas and methods for industrial wastewater treatment, which has broad application prospects and important environmental significance.

[0019] 2. The present invention improves traditional technical means and optimizes the coking wastewater treatment process by setting a switch mechanism. Different from the traditional method of pumping the upper water body to achieve solid-liquid separation, the present invention first achieves solid-liquid separation and then discharges the solid matter in the lower layer through the switch mechanism. This method ensures the purity of the upper water body and avoids the problem of solid matter re-mixing into the water body, thereby improving the treatment effect of coking wastewater. In addition, the switch mechanism is designed to be open, so that its surface is easy to clean, which not only helps to maintain the cleanliness and sanitation standards of the equipment, but also extends the service life of the equipment. The cleaning process can effectively remove dirt and sediment that may accumulate on the surface of the switch mechanism, maintain its normal operating state, and ensure the long-term stable operation of the equipment and efficient solid-liquid separation ability. Therefore, the present invention not only improves the service life of the equipment and the accuracy under long-term use, but also significantly enhances the solid-liquid separation efficiency and treatment effect in the coking wastewater treatment process, meeting the requirements of environmental protection and resource conservation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] The above and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the structure of the filter pressing mechanism, the stirring mechanism and the switch mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the filter press mechanism of the present invention; Figure 5 is a cross-sectional view of the filter press mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the stirring shaft of the present invention; Figure 7 It is a schematic diagram of the structure of the stirring assembly of the present invention; Figure 8 It is a schematic diagram of the switch mechanism structure of the present invention; Fig. 9 It is a schematic diagram of the valve disc structure of the present invention.

[0022] In the figure: 1, bracket; 2, protective shell; 3, feed inlet; 4, propeller; 5, drive motor; 6, sealing shell; 7, filter press mechanism; 71, filter press plate; 72, diverter rubber ring; 73, filter press ring; 74, filter press assembly; 741, filter press hole; 742, through groove; 743, filter press membrane; 8, stirring mechanism; 81, stirring shaft; 82, mounting groove; 83, rotating rod; 84, rotating column; 85, stirring assembly; 851, swing sleeve; 852, stirring column; 853, stirring fan blade; 9, switch mechanism; 91, valve plate; 911, chassis plate; 912, guide plate; 913, guide surface; 92, rotating groove; 93, matching protrusion; 94, matching groove; 95, spring rod; 96, telescopic rod; 97, control cylinder; 98, switch control shaft. DETAILED DESCRIPTION

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] like Figure 1-9 As shown, a coking wastewater treatment device includes a bracket 1, a protective shell 2, a feed port 3, a propeller 4 and a drive motor 5; the bracket 1 is installed on the ground, the protective shell 2 is installed on the bracket 1, the feed port 3 is opened on the upper side of the protective shell 2, the propeller 4 is installed on the top of the protective shell 2, and the drive motor 5 is installed in the middle of the propeller 4. In addition, the device also includes a sealing shell 6, a filter press mechanism 7, a stirring mechanism 8 and a switch mechanism 9. Among them, the sealing shell 6 is arranged inside the protective shell 2 to ensure the sealing during the treatment process and effectively prevent the wastewater from leaking. The filter press mechanism 7 is installed below the propeller 4 and is used to filter the solid-liquid mixture in the wastewater. The stirring mechanism 8 is located in the middle of the sealing shell 6, and promotes the uniform distribution of impurities in the wastewater through stirring to improve the treatment effect. The switch mechanism 9 is installed below the stirring mechanism 8 to control the discharge of solid matter.

[0025] In the process of filter pressing, the stirring mechanism 8 plays an important role. It continuously stirs the wastewater to accelerate the precipitation reaction while ensuring that the impurities in the wastewater will not gather in large quantities in one place, but will be evenly distributed throughout the wastewater. This can improve the effect of filter pressing and enable more liquids to be effectively separated. When the filter pressing is completed, the switch mechanism 9 automatically opens to discharge the solid matter filtered out of the device. This step not only simplifies the operation process, but also ensures the continuity and efficiency of the treatment process. The dual protection design of the protective shell 2 and the sealing shell 6 effectively prevents leakage problems during the wastewater treatment process and ensures the safety and cleanliness of the operating environment. The use of the propeller 4 and the stirring mechanism 8 not only improves the effect of wastewater treatment, but also makes the treatment process more stable and controllable. The combination of the filter pressing mechanism 7 and the switch mechanism 9 simplifies the operation process of solid-liquid separation and solid matter discharge, making the entire treatment process more efficient and convenient. Through these optimized designs, the coking wastewater treatment device can not only efficiently treat complex coking wastewater, but also has the advantages of compact structure, simple operation, and convenient maintenance, and is suitable for various industrial wastewater treatment scenarios.

[0026] In specific operation, coking wastewater and soluble iron salt precipitation reagents enter the sealed housing 6 through the feed port 3. The wastewater mixture after entering the sealed housing 6 forms sulfur element precipitation and cyanide-like precipitation under the action of the stirring mechanism 8. After standing for a period of time, the liquid material flows to the top of the filter press plate 71 under the push of the propeller 4. The propeller 4 ensures that the wastewater mixture maintains an appropriate flow rate and pressure during the treatment process. Thus, the liquid is filtered and enters the top of the filter press mechanism 7, while the solid material is left below the filter press mechanism 7.

[0027] like Figure 3-5 As shown, the filter press mechanism 7 includes a filter press plate 71, a diverter rubber ring 72, a filter press ring 73 and a filter press assembly 74. The filter press plate 71 is installed under the propeller 4 to play a supporting and filtering role. The diverter rubber ring 72 is installed on the filter press plate 71 to help the wastewater to be evenly distributed and avoid local excessive accumulation. The filter press ring 73 is located at the edge of the filter press plate 71, and its cross-sectional shape is a right triangle. This design helps to enhance the sealing performance and structural strength of the edge. The filter press assembly 74 is arranged on the filter press plate 71 in the form of a circular array, and realizes efficient filtration and solid-liquid separation of wastewater through multiple filter holes. This multi-level design ensures high efficiency and stability in the wastewater treatment process.

[0028] like Figure 4As shown, the diverter rubber ring 72 is provided with 2-4, and the diverter rubber ring 72 is used to divert more liquid substances to the filter press components 74 arranged on both sides when the solid substances are filtered during operation, thereby improving the filter press efficiency. Multiple diverter rubber rings 72 are coaxially arranged with different diameters, and the diverter rubber ring 72 is arranged in the middle of two adjacent filter press components 74; first, this design can significantly improve the filter press efficiency. By effectively diverting the liquid substances to the filter press components 74 on both sides, the discharge speed of the liquid can be accelerated, and the residence time of the solid-liquid mixture on the filter press plate 71 can be reduced, thereby improving the overall processing efficiency. Secondly, the design of multiple coaxial and different diameter diverter rubber rings 72 can optimize the pressure distribution. During the filter press process, the diverter rubber rings 72 of different diameters can evenly disperse the pressure, avoid wear or damage caused by excessive pressure on a single diverter rubber ring 72, and improve the durability and stability of the device. In addition, the diverter rubber ring 72 is arranged between adjacent filter press components 74, which helps to distribute the solid substances more evenly. This layout can prevent excessive accumulation of solid matter in a certain place, ensuring that each filter press assembly 74 can be evenly stressed and work effectively, thereby improving the effect of solid-liquid separation.

[0029] like Figure 5 As shown, the filter press assembly 74 includes a filter press hole 741, a through groove 742 and a filter press membrane 743. The filter press hole 741 is provided on the filter press plate 71, and its cross-sectional shape is designed to be a trapezoid, with a longer bottom edge near the top of the filter press plate 71. Such a design helps to increase the filtration area and improve the filtration efficiency. The through groove 742 is provided below the filter press hole 741, serving as a channel for liquid circulation to ensure that the liquid can pass smoothly during the filter press process. The filter press membrane 743 is arranged in the through groove 742 in the form of a linear array, playing a key role in filtering and separating solids and liquids. The trapezoidal shape of the filter press hole 741 can enhance the stability of the filter hole, prevent the aperture from being deformed, and help to extend the service life. Secondly, the setting of the through groove 742 ensures the smooth flow of the liquid during the filter press process, reduces the residence time of the liquid on the filter press plate 71, and thus improves the overall processing efficiency. The filter press membrane 743 arranged in a linear array can provide a larger filtering area. The filter press membrane 743 uses a filter membrane material that only allows liquid substances to pass through, thereby blocking solid substances under the filter press plate 71. And further improve the filtering effect. At the same time, this layout method is also convenient for the replacement and maintenance of the filter press membrane 743, ensuring the reliability and maintainability of the device after long-term use. The design of the filter press assembly 74 effectively improves the filter press efficiency and the durability of the device by optimizing the aperture shape, increasing the liquid channel and reasonably arranging the filter press membrane 743, ensuring the efficiency and stability of the coking wastewater treatment process.

[0030] like Figure 6-7As shown, the stirring mechanism 8 includes a stirring shaft 81, a mounting groove 82, a rotating rod 83, a rotating column 84 and a stirring assembly 85. The stirring shaft 81 is installed below the driving motor 5 and realizes rotational motion through the drive of the motor. The mounting groove 82 is opened on the surface of the stirring shaft 81 for fixing and guiding the movement of the rotating rod 83. The rotating rod 83 is installed inside the mounting groove 82 and can rotate synchronously with the rotation of the stirring shaft 81. The rotating column 84 is installed below the stirring shaft 81 to further transmit the rotational power to the stirring assembly 85. The stirring assembly 85 is installed on the rotating rod 83 and is responsible for stirring in the wastewater. The direct connection between the stirring shaft 81 and the driving motor 5 ensures the efficient transmission of the stirring mechanism 8 and reduces energy loss. Secondly, the matching design of the mounting groove 82 and the rotating rod 83 ensures that the rotating rod 83 is stable and reliable during the rotation process, avoiding jitter and wear during operation. The setting of the rotating column 84 helps to balance the stirring force, improve the stirring effect, and make the impurities in the wastewater evenly distributed, which promotes the subsequent filtration and separation process. The installation position and structural design of the stirring assembly 85 enable it to form an effective stirring flow field in the wastewater, further improving the uniformity and efficiency of wastewater treatment.

[0031] like Figure 7 As shown, the stirring assembly 85 includes a swing sleeve 851, a stirring column 852 and a stirring blade 853. The swing sleeve 851 is installed on the rotating rod 83 so that it can swing freely during the rotation process. The stirring column 852 is installed on the side of the swing sleeve 851 to provide a stable support for the stirring blade 853. The stirring blade 853 is installed on the surface of the stirring column 852 and is designed to be spiral. The spiral stirring blade 853 can generate a strong vortex during the stirring process, enhance the stirring effect, and make the impurities in the wastewater evenly distributed, thereby improving the treatment efficiency. This structural design not only increases the coverage of the stirring, but also improves the uniformity and effect during the wastewater treatment process.

[0032] like Figure 8-9As shown, the switch mechanism 9 includes a valve disc 91, a rotation groove 92, a matching protrusion 93, a matching groove 94, a spring rod 95, a telescopic rod 96, a control cylinder 97 and a switch control shaft 98. The valve disc 91 is installed at the lower end of the sealing housing 6, and two valve discs 91 are provided. A rotation groove 92 is provided in the middle of each valve disc 91 to ensure the flexible rotation of the valve. The two different valve discs 91 are respectively provided with matching protrusions 93 and matching grooves 94 on the side. The design of the matching protrusions 93 and the matching grooves 94 enables the valve discs 91 to be accurately docked and locked, ensuring a good sealing effect when closed. One end of the spring rod 95 is fixed to the bottom of the valve disc 91, and a reset function is provided through elastic action to ensure that the valve automatically returns to its position after operation. The telescopic rod 96 is installed under the spring rod 95. By adjusting the length of the telescopic rod 96, the opening and closing positions of the valve disc 91 can be controlled. The control cylinder 97 is installed under the telescopic rod 96 as a driving device. It controls the movement of the telescopic rod 96 through air pressure changes to realize automatic opening and closing of the valve. The switch control shaft 98 is set on the side of the valve disc 91. The movement of the control cylinder 97 is transmitted to the valve disc 91 through mechanical transmission to achieve precise control. The design of the double valve disc 91 improves the sealing performance and prevents leakage. The precise matching of the rotating groove 92 and the matching protrusion 93 and the matching groove 94 ensures the stability and accuracy of the operation. The combination of the spring rod 95 and the telescopic rod 96 enables the valve to have an automatic reset function, which simplifies the operation. The use of the control cylinder 97 realizes the automatic control of the valve and improves the overall efficiency and reliability of the system. The design of the switch control shaft 98 facilitates mechanical transmission and control, ensuring the accuracy and stability of the device operation.

[0033] like Fig. 9 As shown, the valve disc 91 includes a bottom plate 911, a guide plate 912 and a guide surface 913. The bottom plate 911 is arranged at the bottom of the valve disc 91 to provide a stable foundation. The guide plate 912 is installed above the bottom plate 911 to guide the flow of wastewater. The guide surface 913 is arranged at the two ends of the guide plate 912. Through the arc design, the fluid resistance is effectively reduced and the smooth flow of wastewater is promoted. This combined design not only enhances the structural stability of the valve disc 91, but also optimizes the fluid flow path and improves the efficiency and effect of wastewater treatment.

[0034] like Fig. 9As shown, the guide plate 912 is set as an annular plate, and the guide plate 912 is mirrored along the central axis of the chassis plate 911. The angle of the guide plate 912 is set to 150°, which is conducive to the rapid pouring of solid matter into the bottom. The cross-sectional shape of the guide plate 912 is set to a trapezoidal shape with a short inside and a long outside, and the guide surface 913 is set to an arc surface. The design of the annular plate enables the guide plate 912 to evenly surround the entire device, ensuring that the wastewater can be evenly distributed during the treatment process. This uniform distribution helps to improve the efficiency and effect of wastewater treatment and avoid excessive or insufficient treatment in local areas. The design of the trapezoidal shape with a short inside and a long outside increases the structural strength of the guide plate 912. Such a cross-sectional shape makes the guide plate 912 more stable when subjected to force, and is not easy to deform or damage, thereby extending the service life of the device. The design of the arc-surface guide surface 913 can effectively reduce fluid resistance. When the wastewater flows through the arc-surface guide plate 912, the smooth curve of the arc surface reduces the turbulence and turbulence of the fluid, thereby reducing the flow resistance. This design not only helps to improve the smoothness of wastewater flow, but also reduces energy consumption and improves the working efficiency of the overall device. The curved surface design can also guide the wastewater to flow along a predetermined path, avoiding unnecessary turbulence of the fluid during the treatment process. This plays an important role in improving the wastewater treatment effect and reducing equipment wear. Under the guidance of the curved guide plate 912, the wastewater can pass through each treatment link more effectively, improving the treatment efficiency. The trapezoidal cross-section design with a short inside and a long outside allows the guide plate 912 to better fit the internal structure of the device during installation, ensuring the stability and sealing of the installation. This is critical to maintaining the stable operation of the entire wastewater treatment system and preventing leakage.

[0035] During the working process of the present invention: the staff puts the coking wastewater and the soluble iron salt precipitation reagent into the sealed shell 6 through the feed port 3, the swing sleeve 851 swings to a horizontal position driven by the rotating rod 83, the driving motor 5 is started, and the stirring shaft 81 drives the multiple stirring components 85 to rotate to achieve full mixing; the mixed coking wastewater and the soluble iron salt precipitation reagent will form sulfur element precipitation and cyanide-like precipitation in the sealed shell 6, the driving motor 5 is turned off, and the swing sleeve 851 swings back to the installation groove 82 driven by the rotating rod 83, and is left to stand for 3-5 hours; the propeller 4 drives the filter press plate 71 to press down, and the liquid substance moves to the top of the filter press plate 71 through the filter press membrane 743, and the solid substance is pressed down to the bottom of the sealed shell 6; the filter press plate 71 runs to the maximum stroke, the switch control shaft 98 cooperates with the control cylinder 97 to make the two valve discs 91 open downward successively, the solid substance is discharged, and the separation of the mixture is completed; Regarding the recovery of liquid substances, the present invention provides the following methods: 1. After solid-liquid separation, use a water pump or other water pumping tool to pump liquid substances through a water pipe inserted into the feed port 3.

[0036] 2. A water inlet is provided on the side of the sealing shell 6, which is also the position where the travel of the filter press plate 71 is the largest. After the solid-liquid separation, the water inlet is opened to allow the liquid substance to flow out.

[0037] 3. After solid-liquid separation, the filter press plate 71 is moved upward to drive the liquid substance to flow into the gap between the sealing shell 6 and the protective shell 2, and then an opening is set at the lower end of the protective shell 2 to collect the liquid substance.

[0038] In actual use, operators can make choices based on site conditions and usage requirements.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A precipitation device for deep desulfurization and cyanide removal of coking wastewater, comprising a support (1), a protective shell (2), a feed inlet (3), a propeller (4) and a drive motor (5); the support (1) is installed on the ground, the protective shell (2) is installed on the support (1), the feed inlet (3) is opened on the upper side of the protective shell (2), the propeller (4) is installed on the upper side of the protective shell (2), and the drive motor (5) is installed in the middle of the propeller (4); characterized in that: The invention also comprises a sealed housing (6), a filter pressing mechanism (7), a stirring mechanism (8) and a switch mechanism (9); the sealed housing (6) is arranged inside the protective housing (2); the filter pressing mechanism (7) is installed below the propeller (4); the stirring mechanism (8) is installed in the middle of the sealed housing (6); the switch mechanism (9) is installed below the stirring mechanism (8); the filter pressing mechanism (7) is driven by the propeller (4) to press down the solid-liquid mixture of the coking wastewater at the periphery of the stirring mechanism (8), so that the liquid is filtered and enters the top of the filter pressing mechanism (7); and the switch mechanism (9) is opened after the filtration is completed to discharge the solid matter.

2. A precipitation device for deep desulfurization and cyanide removal of coking wastewater according to claim 1, characterized in that: The filter press mechanism (7) comprises a filter press plate (71), a flow diverter rubber ring (72), a filter press ring (73) and a filter press assembly (74); the filter press plate (71) is mounted below the propeller (4), the flow diverter rubber ring (72) is mounted above the filter press plate (71), the filter press ring (73) is arranged at the edge of the filter press plate (71), the cross-sectional shape of the filter press ring (73) is arranged to be a right triangle, and the filter press assembly (74) is arranged in a circular array on the filter press plate (71).

3. A precipitation device for deep desulfurization and cyanide removal of coking wastewater according to claim 2, characterized in that: The number of the flow-dividing rubber rings (72) is 2 to 4, the plurality of flow-dividing rubber rings (72) are coaxially arranged with different diameters, and the flow-dividing rubber rings (72) are arranged in the middle of two adjacent filter press assemblies (74).

4. A precipitation device for deep desulfurization and cyanide removal of coking wastewater according to claim 2, characterized in that: The filter press assembly (74) comprises a filter press hole (741), a passing groove (742) and a filter press membrane (743); the filter press hole (741) is provided on the filter press plate (71); the cross-sectional shape of the filter press hole (741) is arranged to be a trapezoid, and the bottom edge close to the top of the filter press plate (71) is longer; the passing groove (742) is provided below the filter press hole (741); and the filter press membrane (743) is arranged in a linear array in the passing groove (742).

5. The precipitation device for deep desulfurization and cyanide removal of coking wastewater according to claim 1, characterized in that: The stirring mechanism (8) comprises a stirring shaft (81), a mounting groove (82), a rotating rod (83), a rotating column (84) and a stirring assembly (85); the stirring shaft (81) is mounted below the driving motor (5); the mounting groove (82) is formed on the surface of the stirring shaft (81); the rotating rod (83) is mounted inside the mounting groove (82); the rotating column (84) is mounted below the stirring shaft (81); and the stirring assembly (85) is mounted on the rotating rod (83).

6. A precipitation device for deep desulfurization and cyanide removal of coking wastewater according to claim 5, characterized in that: The stirring assembly (85) comprises a swing sleeve (851), a stirring column (852) and a stirring blade (853); the swing sleeve (851) is mounted on the rotating rod (83), the stirring column (852) is mounted on the side of the swing sleeve (851), and the stirring blade (853) is mounted on the surface of the stirring column (852); the stirring blade (853) is arranged in a spiral shape.

7. The precipitation device for deep desulfurization and cyanide removal of coking wastewater according to claim 1, characterized in that: The switch mechanism (9) comprises a valve disc (91), a rotating groove (92), a matching protrusion (93), a matching groove (94), a spring rod (95), a telescopic rod (96), a control cylinder (97) and a switch control shaft (98); the valve disc (91) is mounted at the lower end of the sealing housing (6); two valve discs (91) are provided; the rotating groove (92) is opened in the middle of the valve disc (91); the two different valve discs (91) are respectively provided with matching protrusions (93) and matching grooves (94) on the side; one end of the spring rod (95) is mounted below the valve disc (91); the telescopic rod (96) is mounted below the spring rod (95); the control cylinder (97) is mounted below the telescopic rod (96); and the switch control shaft (98) is arranged on the side of the valve disc (91).

8. A precipitation device for deep desulfurization and cyanide removal of coking wastewater according to claim 7, characterized in that: The valve disc (91) comprises a base plate (911), a guide plate (912) and a guide surface (913); the base plate (911) is arranged at the lower part of the valve disc (91), the guide plate (912) is arranged on the upper part of the base plate (911), and the guide surface (913) is arranged at two ends of the guide plate (912).

9. A precipitation device for deep desulfurization and cyanide removal of coking wastewater according to claim 8, characterized in that: The guide plate (912) is configured as an annular plate. The guide plate (912) is mirror-imaged along the central axis of the chassis plate (911). The angle of the guide plate (912) is configured to be 120-160°.

10. A precipitation device for deep desulfurization and cyanide removal of coking wastewater according to claim 8, characterized in that: The cross-sectional shape of the guide plate (912) is set to be a trapezoidal shape with a short interior and a long exterior, and the guide surface (913) is set to be a curved surface.

Images