Sodium saccharin production wastewater recycling device

Abstract

The utility model relates to the field of saccharin sodium production, in particular to a saccharin sodium production wastewater recycling device which comprises a filter press assembly, a filtering assembly is arranged at the top of the filter press assembly and composed of a plurality of filter pressing plates, partition plates are fixedly installed in the middles of the filter pressing plates, and communicating holes are formed in the middles of the partition plates. Frame grooves are formed in the two sides of the filter pressing plate and connected with a fixing frame in a clamped mode, a filter screen is fixedly installed in the middle of the fixing frame, a fixing ring is fixedly installed in the middle of the filter screen and connected with the two ends of the communicating hole in a clamped mode, air bags are arranged on the two sides of the partition plate, and the tops of the two air bags are communicated with an inflation connector. The air inflation interface is arranged at the top of the filter pressing plate, so that the effects of effectively separating more solid particles and organic impurities contained in the last mother liquor in the production of saccharin sodium salt, reducing the loss of insoluble substances and reducing the chemical oxygen demand and suspended solids in wastewater are achieved, and the filter cloth can be conveniently detached and replaced.

Description

Technical Field

[0001] This application relates to the field of saccharin sodium production, and in particular to a device for recycling saccharin sodium production wastewater. Background Art

[0002] Saccharin sodium is an artificial sweetener with the chemical name sodium o-sulfobenzimide, and its sweetness is about 300 to 500 times that of sucrose, but it contains almost no calories. During the production of saccharin sodium, the mother liquor (i.e., the remaining solution after the reaction) is reused to improve the utilization rate of raw materials. After multiple cycles of use, the finally produced mother liquor is called the last mother liquor. This mother liquor still contains a certain amount of saccharin sodium finished products, but at the same time contains a large amount of organic impurities.

[0003] The existing wastewater treatment method is to use a centrifuge to treat the wastewater. However, a large amount of insoluble substances will be lost during the centrifugation process. The chemical oxygen demand and suspended solids in the wastewater treated by this method are relatively high. When using a plate and frame filter press for pressure filtration, the filter cloth needs to be replaced regularly, and the replacement of the filter cloth is rather cumbersome and not convenient to use. Content of the Utility Model

[0004] This application provides a device for recycling saccharin sodium production wastewater to solve the problems raised in the above background art.

[0005] The above technical purpose of this application is achieved through the following technical solutions:

[0006] A device for recycling saccharin sodium production wastewater includes a filter press assembly. A filtering assembly is provided on the top of the filter press assembly. The filtering assembly is composed of several filter plates. A partition is fixedly installed in the middle of the filter plate. A communication hole is provided in the middle of the partition. Frame grooves are opened on both sides of the filter plate. A fixed frame is snap-connected to the frame grooves. A filter screen is fixedly installed in the middle of the fixed frame. A fixing ring is fixedly installed in the middle of the filter screen. The fixing ring is snap-connected to both ends of the communication hole. Air bags are provided on both sides of the partition. The air bags are arranged between the filter screen and the partition. An inflation interface is connected to the tops of the two air bags. The inflation interface is provided on the top of the filter plate.

[0007] By adopting the above scheme, a filter assembly is provided on the top of the filter press assembly, which is convenient for the filter press assembly to drive the filter assembly to filter the wastewater generated in the production process of sodium saccharin for filter pressing and filtration treatment, which is convenient for subsequent recycling. This method can more effectively separate the large number of solid particles and organic impurities contained in the final mother liquor in the production of sodium saccharin, while reducing the loss of insoluble substances and reducing the chemical oxygen demand and suspended solids in the wastewater. A partition is fixedly installed in the middle of the filter press plate, which is convenient for the partition to separate the two sides of the filter press plate into independent filter press chambers. A connecting plate is provided in the middle of the partition plate. The through hole makes it convenient for waste liquid to enter the filter press chamber for pressure filtration. The setting of the fixing ring and the fixing frame makes it convenient to fix the filter screen on the filter press plate, and convenient to disassemble and replace the filter screen, thereby improving the convenience of replacing the filter screen. The air bag is set between the filter screen and the partition plate, so that the air bag is inflated to provide pressure to the filter screen during pressure filtration, thereby providing pressure to the filter press chamber to squeeze the waste liquid. The tops of the two air bags are connected with an inflation interface, and the inflation interface is set on the top of the filter press plate, which is convenient for connecting to external pipelines and providing airflow for inflation of the air bag.

[0008] Furthermore, the filter press assembly comprises a fixed frame, a movable beam and an open plate beam are fixedly mounted on one side of the fixed frame, and a thrust plate is fixedly mounted on the other end of the movable beam and the open plate beam.

[0009] By adopting the above scheme, a movable beam and an open plate beam are fixedly installed on one side of the fixed frame, and a thrust plate is fixedly installed on the other end of the movable beam and the open plate beam, so that the filter press assembly forms a stable frame structure and provides support for the filter assembly.

[0010] Furthermore, a hydraulic telescopic rod is fixedly installed in the middle of the fixed frame, a clamping plate is fixedly installed at the output end of the hydraulic telescopic rod, and both ends of the clamping plate are slidably connected to the moving beam.

[0011] By adopting the above scheme, a clamping plate is fixedly installed at the output end of the hydraulic telescopic rod, and both ends of the clamping plate are slidably connected to the movable beam, so that the hydraulic telescopic rod can work to make the clamping plate press the filter assembly, thereby facilitating the filtration of the waste liquid.

[0012] Furthermore, the four corners of the thrust plate are provided with filtrate interfaces, and the middle part of the thrust plate is provided with a feed interface.

[0013] By adopting the above scheme, filtrate interfaces are provided at the four corners of the thrust plate, and a feed interface is provided in the middle of the thrust plate, so that the external pipeline is connected with the filtrate interface and the feed interface, so that the filtrate can be discharged from the filtrate interface and the waste liquid can enter the filter press chamber from the feed interface.

[0014] Furthermore, a solenoid valve is provided at one end of the feed interface, and a pressure gauge is provided on the side of the solenoid valve facing the filter assembly.

[0015] By adopting the above solution, a solenoid valve is provided at one end of the feed interface, and a pressure gauge is provided on the side of the solenoid valve facing the filter assembly, which facilitates the solenoid valve to control the opening and closing of the feed interface, and the pressure gauge is convenient for monitoring the pressure inside the filter chamber during pressure filtration.

[0016] Furthermore, liquid outlet holes are opened at the four corners of the filter plate, and the liquid outlet holes are communicated with the filtrate interface.

[0017] By adopting the above solution, liquid outlet holes are opened at the four corners of the filter plate, and the liquid outlet holes are communicated with the filtrate interface, which facilitates the filtrate generated during the pressure filtration process to flow from the liquid outlet holes to the filtrate interface.

[0018] Furthermore, liquid outlet grooves are opened at the four corners inside the filter plate, and the liquid outlet grooves are communicated with the liquid outlet holes.

[0019] By adopting the above solution, liquid outlet grooves are opened at the four corners inside the filter plate, and the liquid outlet grooves are communicated with the liquid outlet holes, which facilitates the filtrate generated during the pressure filtration process to enter the liquid outlet holes from the liquid outlet grooves.

[0020] Furthermore, sliding frames are fixedly installed in the middle of both ends of the filter plate, and the bottom of the sliding frames is slidably connected with the moving beam.

[0021] By adopting the above solution, sliding frames are fixedly installed in the middle of both ends of the filter plate, and the bottom of the sliding frames is slidably connected with the moving beam, which facilitates the moving beam to provide support for the filter assembly, and is convenient for the plate-opening trolley to move on the plate-opening beam for plate opening and discharging, and discharging the filter cake generated by pressure filtration.

[0022] Furthermore, connecting heads are fixedly installed at the top of both ends of the filter plate, and connecting ropes are fixedly installed at the bottom of adjacent connecting heads.

[0023] By adopting the above solution, connecting heads are fixedly installed at the top of both ends of the filter plate, and connecting ropes are fixedly installed at the bottom of adjacent connecting heads, which facilitates the plate-opening trolley to pull the first filter plate during plate opening to sequentially pull open other filter plates, and is convenient for discharging the filter cake generated by pressure filtration.

[0024] In summary, the present application has the following technical effects:

[0025] A filter assembly is provided on the top of the filter press assembly, so that the filter press assembly can drive the filter assembly to filter the wastewater generated in the production process of sodium saccharin for filter pressing and filtration treatment, which is convenient for subsequent recycling. This method can more effectively separate the large number of solid particles and organic impurities contained in the final mother liquor in the production of sodium saccharin, while reducing the loss of insoluble substances and reducing the chemical oxygen demand and suspended solids in the wastewater. A partition is fixedly installed in the middle of the filter press plate, so that the partition can separate the two sides of the filter press plate into independent filter press chambers. A connecting hole is provided in the middle of the partition plate, so that the waste liquid can enter the filter press chamber for filter pressing. The setting of the fixing ring and the fixing frame facilitates the filter to be fixedly installed on the filter press plate. , and it is convenient to disassemble and replace the filter, thereby improving the convenience of replacing the filter. The air bag is arranged between the filter and the partition, so that the air bag is inflated to provide pressure to the filter during pressure filtration, thereby providing pressure to the filter pressure chamber to squeeze the waste liquid. The tops of the two air bags are connected with an inflation interface, and the inflation interface is arranged on the top of the filter press plate, which is convenient for connecting to external pipelines and providing airflow for inflation of the air bag, thereby effectively separating the large number of solid particles and organic impurities contained in the last mother liquor in the production of saccharin sodium, while reducing the loss of insoluble substances, and reducing the chemical oxygen demand and suspended solids in the wastewater, and the filter cloth can be conveniently disassembled and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the appearance structure diagram of this application;

[0027] Figure 2 It is a three-dimensional structural diagram of the filter assembly of the present application;

[0028] Figure 3 It is an exploded view of the filter press plate of the present application;

[0029] Figure 4 This application Figure 1 A magnified view of the structure in the middle;

[0030] Figure 5 This application Figure 3 A magnified view of the structure in B.

[0031] In the figure, 101 is a filter press assembly; 10101 is a fixed frame; 10102 is a moving beam; 10103 is an opening plate beam; 10104 is a thrust plate; 10105 is a filtrate interface; 10106 is a hydraulic telescopic rod; 10107 is a pressing plate; 10108 is a feed interface; 10109 is a solenoid valve; 10110 is a pressure gauge; 102 is a filtering assembly; 10201 is a filter plate; 10202 is a sliding frame; 10203 is a connector; 10204 is a connecting rope; 10205 is a partition; 10206 is a frame groove; 10207 is a communication hole; 10208 is a liquid outlet hole; 10209 is a fixed frame; 10210 is a filter screen; 10211 is a fixing ring; 10212 is an inflation interface; 10213 is an airbag; 10214 is a liquid outlet groove. Detailed implementation mode

[0032] The following further elaborates on this application in conjunction with the attached drawings.

[0033] Example:

[0034] As shown in the attached Figure 1 to the attached Figure 5 figure:

[0035] The utility model provides a sodium saccharin production wastewater recycling device, comprising a filter press assembly 101, wherein a filter assembly 102 is arranged on the top of the filter press assembly 101, and the filter press assembly 102 is arranged on the top of the filter press assembly 101, so that the filter press assembly 101 drives the filter assembly 102 to perform filter pressing and filtering treatment on the wastewater generated in the sodium saccharin production process, which is convenient for subsequent recycling and utilization. This method can more effectively separate more solid particles and organic impurities contained in the last mother liquor in the production of sodium saccharin, while reducing the loss of insoluble substances and reducing the chemical oxygen demand and suspended solids in the wastewater. The filter assembly 10 2 is composed of a plurality of filter press plates 10201, a partition plate 10205 is fixedly installed in the middle of the filter press plate 10201, and the partition plate 10205 is fixedly installed in the middle of the filter press plate 10201, so that the partition plate 10205 can separate the two sides of the filter press plate 10201 into independent filter press chambers, and a connecting hole 10207 is provided in the middle of the partition plate 10205, so that the waste liquid can enter the filter press chamber for filtering, and frame grooves 10206 are opened on both sides of the filter press plate 10201, and the frame grooves 10206 are connected with fixed frames 10209 in a snap-fit ​​manner, and the fixed frames 10209 are connected with the fixed frames 10209. 9, a filter screen 10210 is fixedly installed in the middle, that is, a fixing ring 10211 is fixedly installed in the middle of the filter screen 10210, and the fixing ring 10211 is connected with both ends of the connecting hole 10207 by snapping. Through the setting of the fixing ring 10211 and the fixing frame 10209, the filter screen 10210 is conveniently fixedly installed on the filter press plate 10201, and the filter screen 10210 is convenient to disassemble and replace, thereby improving the convenience of replacing the filter screen 10210. The airbags 10213 on both sides of the partition 10205 are arranged between the filter screen 10210 and the partition 10205. The airbag 10213 is arranged between the filter screen 10210 and the partition 10205, so that the airbag 10213 can be inflated to provide pressure to the filter screen 10210 during pressure filtration, thereby providing pressure to the filter pressure chamber to squeeze the waste liquid. The tops of the two airbags 10213 are connected with an inflation interface 10212, and the inflation interface 10212 is arranged on the top of the filter press plate 10201. The tops of the two airbags 10213 are connected with an inflation interface 10212, and the inflation interface 10212 is arranged on the top of the filter press plate 10201, which is convenient for connecting external pipelines and providing airflow for inflation of the airbags 10213.

[0036] Among them, the filter press assembly 101 includes a fixed frame 10101. On one side of the fixed frame 10101, a moving beam 10102 and an opening plate beam 10103 are fixedly installed. At the other ends of the moving beam 10102 and the opening plate beam 10103, a thrust plate 10104 is fixedly installed. By fixedly installing the moving beam 10102 and the opening plate beam 10103 on one side of the fixed frame 10101 and fixedly installing the thrust plate 10104 at the other ends of the moving beam 10102 and the opening plate beam 10103, it is convenient to form a stable frame structure for the filter press assembly 101 and provide support for the filtering assembly 102.

[0037] Among them, a hydraulic telescopic rod 10106 is fixedly installed in the middle of the fixed frame 10101. At the output end of the hydraulic telescopic rod 10106, a pressing plate 10107 is fixedly installed. Both ends of the pressing plate 10107 are slidably connected to the moving beam 10102. By fixedly installing the pressing plate 10107 at the output end of the hydraulic telescopic rod 10106 and slidably connecting both ends of the pressing plate 10107 to the moving beam 10102, it is convenient for the hydraulic telescopic rod 10106 to work to press the filtering assembly 102 with the pressing plate 10107 and facilitate the pressure filtration of the waste liquid.

[0038] Among them, filtrate interfaces 10105 are provided at the four corners of the thrust plate 10104, and a feed interface 10108 is provided in the middle of the thrust plate 10104. By providing the filtrate interfaces 10105 at the four corners of the thrust plate 10104 and the feed interface 10108 in the middle of the thrust plate 10104, it is convenient for external pipelines to communicate with the filtrate interfaces 10105 and the feed interface 10108, and for the filtrate to be discharged from the filtrate interfaces 10105 and the waste liquid to enter the pressure filtration chamber from the feed interface 10108.

[0039] Among them, a solenoid valve 10109 is provided at one end of the feed interface 10108, and a pressure gauge 10110 is provided on the side of the solenoid valve 10109 facing the filtering assembly 102. By providing the solenoid valve 10109 at one end of the feed interface 10108 and the pressure gauge 10110 on the side of the solenoid valve 10109 facing the filtering assembly 102, it is convenient for the solenoid valve 10109 to control the opening and closing of the feed interface 10108, and the pressure gauge 10110 is convenient for monitoring the pressure inside the pressure filtration chamber during pressure filtration.

[0040] Among them, liquid outlet holes 10208 are opened at the four corners of the filter press plate 10201, and the liquid outlet holes 10208 are communicated with the filtrate interfaces 10105. By opening the liquid outlet holes 10208 at the four corners of the filter press plate 10201 and communicating the liquid outlet holes 10208 with the filtrate interfaces 10105, it is convenient for the filtrate generated during the pressure filtration process to flow from the liquid outlet holes 10208 to the filtrate interfaces 10105.

[0041] Among them, liquid outlet grooves 10214 are formed at the four corners inside the filter pressing plate 10201. The liquid outlet grooves 10214 are communicated with the liquid outlet holes 10208. By forming the liquid outlet grooves 10214 at the four corners inside the filter pressing plate 10201 and communicating the liquid outlet grooves 10214 with the liquid outlet holes 10208, it is convenient for the filtrate generated during the filter pressing process to enter the liquid outlet holes 10208 from the liquid outlet grooves 10214.

[0042] Among them, sliding frames 10202 are fixedly installed in the middle of both ends of the filter pressing plate 10201. The bottom of the sliding frames 10202 is slidably connected with the moving beam 10102. By fixedly installing the sliding frames 10202 in the middle of both ends of the filter pressing plate 10201 and slidingly connecting the bottom of the sliding frames 10202 with the moving beam 10102, it is convenient for the moving beam 10102 to provide support for the filtering assembly 102, and it is also convenient for the plate-opening trolley to move on the plate-opening beam 10103 to perform plate-opening and discharging to discharge the filter cake generated by the filter pressing.

[0043] Among them, connecting heads 10203 are fixedly installed at the top of both ends of the filter pressing plate 10201. Connecting ropes 10204 are fixedly installed at the bottom of adjacent connecting heads 10203. By fixedly installing the connecting heads 10203 at the top of both ends of the filter pressing plate 10201 and fixedly installing the connecting ropes 10204 at the bottom of adjacent connecting heads 10203, it is convenient for the plate-opening trolley to pull the first filter pressing plate 10201 during plate-opening to sequentially pull open the other filter pressing plates 10201, facilitating the discharge of the filter cake generated by the filter pressing.

[0044] Specifically, a moving beam 10102 and a plate-opening beam 10103 are fixedly installed on one side of a fixing frame 10101, and a thrust plate 10104 is fixedly installed at the other ends of the moving beam 10102 and the plate-opening beam 10103, facilitating the formation of a stable frame structure for the filter press assembly 101 and providing support for the filtering assembly 102. Filtrate interfaces 10105 are provided at the four corners of the thrust plate 10104, and a feed interface 10108 is provided in the middle of the thrust plate 10104, facilitating the connection of external pipelines to the filtrate interfaces 10105 and the feed interface 10108, facilitating the discharge of filtrate from the filtrate interfaces 10105 and the entry of waste liquid into the filter chamber through the feed interface 10108. A partition plate 10205 is fixedly installed in the middle of the filter plate 10201, facilitating the partition of both sides of the filter plate 10201 into independent filter chambers by the partition plate 10205. A communication hole 10207 is provided in the middle of the partition plate 10205, facilitating the entry of waste liquid into the interior of the filter chamber for filtration. Through the provision of a fixing ring 10211 and a fixing frame 10209, the filter screen 10210 can be fixedly installed on the filter plate 10201, and it is convenient to disassemble and replace the filter screen 10210, thereby improving the convenience of replacing the filter screen 10210. An airbag 10213 is provided between the filter screen 10210 and the partition plate 10205, facilitating the inflation of the airbag 10213 during filtration to provide pressure to the filter screen 10210, thereby facilitating the provision of pressure to the filter chamber to squeeze the waste liquid. An inflation interface 10212 is connected to the tops of the two airbags 10213, and the inflation interface 10212 is provided at the top of the filter plate 10201, facilitating the connection of an external pipeline and facilitating the provision of air flow for inflating the airbag 10213. A solenoid valve 10109 is provided at one end of the feed interface 10108, and a pressure gauge 10110 is provided on the side of the solenoid valve 10109 facing the filtering assembly 102, facilitating the control of the opening and closing of the feed interface 10108 by the solenoid valve 10109, and the pressure gauge 10110 is convenient for monitoring the pressure inside the filter chamber during filtration. Liquid discharge grooves 10214 are opened at the four corners inside the filter plate 10201, and the liquid discharge grooves 10214 are communicated with the liquid discharge holes 10208, facilitating the filtrate generated during filtration to enter the liquid discharge holes 10208 from the liquid discharge grooves 10214. Liquid discharge holes 10208 are opened at the four corners of the filter plate 10201, and the liquid discharge holes 10208 are communicated with the filtrate interfaces 10105, facilitating the filtrate generated during filtration to flow from the liquid discharge holes 10208 to the filtrate interfaces 10105. Connection heads 10203 are fixedly installed at the tops of both ends of the filter plate 10201, and connection ropes 10204 are fixedly installed at the bottoms of adjacent connection heads 10203, facilitating the pulling of the first filter plate 10201 by an opening trolley during plate opening to sequentially pull open other filter plates 10201, facilitating the discharge of the filter cake generated by filtration.

[0045] This specific embodiment is only an interpretation of the present application and does not limit the present application. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A device for recycling wastewater from the production of sodium saccharin, characterized in that: The invention comprises a filter press assembly (101), wherein a filter assembly (102) is provided on the top of the filter press assembly (101), wherein the filter assembly (102) is composed of a plurality of filter press plates (10201), wherein a partition plate (10205) is fixedly installed in the middle of the filter press plate (10201), wherein a connecting hole (10207) is provided in the middle of the partition plate (10205), and frame grooves (10206) are provided on both sides of the filter press plate (10201), wherein the frame grooves (10206) are snap-connected with a fixing frame (10209), and wherein the fixing frame (10209) is fixed in the middle. A filter screen (10210) is fixedly installed, a fixing ring (10211) is fixedly installed in the middle of the filter screen (10210), the fixing ring (10211) is snap-connected with both ends of the connecting hole (10207), air bags (10213) are provided on both sides of the partition (10205), the air bags (10213) are provided between the filter screen (10210) and the partition (10205), and the tops of the two air bags (10213) are connected with an inflation interface (10212), and the inflation interface (10212) is provided on the top of the filter press plate (10201).

2. A saccharin sodium production wastewater recycling device according to claim 1, characterized in that: The filter press assembly (101) comprises a fixed frame (10101), a movable beam (10102) and an open plate beam (10103) being fixedly mounted on one side of the fixed frame (10101), and a thrust plate (10104) being fixedly mounted on the other ends of the movable beam (10102) and the open plate beam (10103).

3. A saccharin sodium production wastewater recycling device according to claim 2, characterized in that: A hydraulic telescopic rod (10106) is fixedly installed in the middle of the fixed frame (10101), a clamping plate (10107) is fixedly installed at the output end of the hydraulic telescopic rod (10106), and both ends of the clamping plate (10107) are slidably connected to the moving beam (10102).

4. A saccharin sodium production wastewater recycling device according to claim 3, characterized in that: The four corners of the thrust plate (10104) are provided with filtrate interfaces (10105), and the middle of the thrust plate (10104) is provided with a feed interface (10108).

5. A saccharin sodium production wastewater recycling device according to claim 4, characterized in that: A solenoid valve (10109) is provided at one end of the feed interface (10108), and a pressure gauge (10110) is provided on the side of the solenoid valve (10109) facing the filter assembly (102).

6. A saccharin sodium production wastewater recycling device according to claim 5, characterized in that: The filter press plate (10201) has four corners provided with liquid outlet holes (10208), and the liquid outlet holes (10208) are connected to the filtrate interface (10105).

7. A saccharin sodium production wastewater recycling device according to claim 6, characterized in that: Liquid outlet grooves (10214) are provided at four corners inside the filter press plate (10201), and the liquid outlet grooves (10214) are connected to the liquid outlet hole (10208).

8. A saccharin sodium production wastewater recycling device according to claim 7, characterized in that: Sliding frames (10202) are fixedly mounted in the middle of both ends of the filter press plate (10201), and the bottom of the sliding frame (10202) is slidably connected to the moving beam (10102).

9. A saccharin sodium production wastewater recycling device according to claim 8, characterized in that: Connecting heads (10203) are fixedly mounted on the tops of both ends of the filter press plate (10201), and connecting ropes (10204) are fixedly mounted on the bottoms of adjacent connecting heads (10203).

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