A filtrate collection device for industrial waste alkali treatment

Abstract

This utility model discloses a filtrate collection device for industrial waste alkali treatment, relating to the field of industrial waste alkali treatment technology. It includes a waste alkali collection tank, a filter box, a diversion pipe, a filtrate collection tank, an impurity filtration assembly, a collection tank level gauge, and an automatic control cabinet. This utility model effectively removes large and small particulate impurities from waste alkali, improving the purity of the filtrate. The PLC controller is used in conjunction with the waste alkali level gauge, collection tank level gauge, waste liquid pump, and outlet pump for coordinated control, achieving automation of the filtrate collection process and avoiding the risk of filtrate overflow. The use of an anti-corrosion coating effectively extends the service life of the equipment. The filtered filtrate is transported to the production unit for reuse via the outlet pump, realizing resource recycling and reducing production costs. The use of this utility model significantly improves the efficiency and safety of waste alkali treatment, reduces environmental pollution and resource waste, and has broad application prospects and significant economic benefits.

Description

Technical Field

[0001] This utility model relates to the field of industrial waste alkali treatment technology, specifically to a filtrate collection device for industrial waste alkali treatment. Background Technology

[0002] Currently, the treatment of waste alkaline solutions typically employs methods such as filtration, sedimentation, and neutralization. During the filtration process, filtrate collection is a crucial step. However, existing filtrate collection devices suffer from the following problems:

[0003] 1. Low collection efficiency: Traditional filtrate collection devices usually use a simple gravity flow method, which cannot efficiently filter and separate impurities in waste alkaline solution, resulting in slow filtrate collection speed and a large amount of impurities remaining.

[0004] 2. Risk of filtrate overflow: During the filtrate collection process, due to the lack of effective liquid level monitoring and automatic control, filtrate is prone to overflow, resulting in resource waste and environmental pollution.

[0005] 3. Low level of automation: Most existing filtrate collection devices rely on manual operation and cannot achieve automated liquid level monitoring, pumping and alarm functions, which increases the labor intensity and operational risks of operators.

[0006] 4. Poor corrosion resistance: Waste alkaline solution is highly corrosive. Traditional filtrate collection devices are easily corroded during long-term use, leading to equipment damage and a short service life.

[0007] Therefore, developing a high-efficiency, automated, and corrosion-resistant waste alkali filtrate collection device is of great significance for improving waste alkali treatment efficiency and reducing environmental pollution and resource waste. Utility Model Content

[0008] The purpose of this invention is to provide a filtrate collection device for industrial waste alkali treatment, so as to solve the problems of low collection efficiency, filtrate overflow risk, low degree of automation and poor corrosion resistance of existing filtrate collection devices mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a filtrate collection device for industrial waste alkali treatment, comprising a waste alkali collection tank, a filter box, a diversion pipe, and a filtrate collection tank connected in sequence. An impurity filtration assembly is installed inside the diversion pipe. A collection tank level gauge is installed inside the filtrate collection tank. The waste alkali collection tank, filter box, diversion pipe, filtrate collection tank, and collection tank level gauge are electrically connected to an automatic control cabinet. A waste alkali level gauge and a waste alkali pump connected to the filter box via a pipe are installed inside the waste alkali collection tank. The filter box includes a rectangular box with an open top and a removable filter screen inside. The bottom of the rectangular box is concave and tapered, with a diversion pipe connected at the lowest point. Above the filter screen on the upper part of one side wall, a... The system includes an inlet for waste alkali solution connected to the outlet pipe of the waste liquid pump; the lower end of the drainage pipe is connected to the filtrate collection tank; the drainage pipe contains an impurity filtration assembly; the filtrate collection tank is located below the outlet of the drainage pipe and includes a collection tank with an open top and a built-in collection tank level gauge; the bottom of the collection tank is convex and an outlet pipe is located at the lowest point, which is then connected to the production unit via an outlet pump; the impurity filtration assembly includes multiple layers of filter screens, each layer of filter screen is fixedly fitted with a filter screen fixing frame, and the filter screen fixing frame is fixedly installed inside the fixed drainage pipe; the automatic control cabinet includes a rectangular cabinet with a hinged door on the front, the cabinet contains a PLC controller, and an audible and visual alarm is installed on the top.

[0010] Preferably, the waste alkali collection tank is located within the production plant area and is connected to each waste alkali discharge point of the production unit via a guide pipe.

[0011] Preferably, the rectangular box has a lower rotating shaft mounted on the lower part of the inner side wall where the waste alkali inlet is located via a bearing seat, and an upper rotating shaft mounted on the outer side wall opposite to it via a bracket, extending above the top edge of the rectangular box and equipped with a rotary motor. A rotary filter screen that can rotate is mounted together via the lower and upper rotating shafts. A waste trough is located below the highest point of the rotary filter screen, and a baffle plate extending obliquely downward toward the rotary filter screen is located on the side wall above the lower rotating shaft.

[0012] Preferably, a filter support is provided on the top of the rectangular box, and a rotary drum is provided on it via a bearing seat. One end of the rotary drum is rotatably connected to the outlet pipe of the waste liquid pump, and the other end is connected to a conical rotating filter screen. The edge of the rotating filter screen extends beyond the edge of the rectangular box and a receiving groove is provided below it. Gear teeth are provided on the outer wall of the rotary drum, and a filter motor provided on the filter support is connected to it through gear meshing.

[0013] Preferably, the drainage tube is a pipe or a rectangular tube.

[0014] Preferably, the drainage tube includes a lower fixed drainage tube groove and an upper detachable drainage tube cover plate. The fixed drainage tube groove and the drainage tube cover plate are locked together by a locking buckle, and the joint is sealed. An impurity filter assembly is provided in the fixed drainage tube groove.

[0015] Preferably, the liquid level gauge in the collection tank is an ultrasonic liquid level sensor.

[0016] Preferably, the pore size of the multi-layered filter screen gradually decreases along the filtration direction.

[0017] Preferably, the inner wall of the rectangular box, the filter screen, the rotary filter screen, the inner wall of the rotary drum, and the rotating filter screen are all coated with an anti-corrosion coating.

[0018] Preferably, the waste alkali liquid level gauge, waste liquid reduction pump, discharge pump, collection tank level gauge, rotary motor, and filter motor are electrically connected to the PLC controller; the PLC controller controls the waste alkali liquid level gauge and waste liquid reduction pump, or both, in conjunction with the rotary motor or filter motor, controls the discharge pump and collection tank level gauge, and controls the audible and visual alarm in conjunction with the collection tank level gauge.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention effectively removes large and small impurities from waste alkali solution, improving the purity of the filtrate. It employs a PLC controller linked with equipment such as the waste alkali solution level gauge, collection tank level gauge, waste liquid pump, and discharge pump to automate the filtrate collection process. The collection tank level gauge monitors the filtrate level in real time; when the level reaches a preset height, the discharge pump automatically transports the filtrate to the production unit for reuse, avoiding the risk of filtrate overflow. When the level exceeds the upper limit, an audible and visual alarm automatically sounds, reminding operators to handle the filtrate promptly, improving system safety and reliability. Key components such as the rectangular housing, filter screen, rotary filter screen, rotary drum, and rotating filter screen are all coated with anti-corrosion coatings, effectively preventing corrosion from waste alkali solution and extending the equipment's service life. The impurity filtration components are made of stainless steel, which is corrosion-resistant and high-strength, adaptable to the waste alkali solution treatment environment. The filtered filtrate is transported to the production unit for reuse via the discharge pump, achieving resource recycling and reducing production costs. The filtrate collection device of this invention significantly improves the efficiency and safety of waste alkali treatment through optimizations in high-efficiency filtration, automated control, corrosion-resistant design, and resource recycling, while reducing environmental pollution and resource waste. It has broad application prospects and significant economic benefits. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the present invention;

[0022] Figure 2 for Figure 1 Diagram showing the replacement of the middle filter with a rotary filter;

[0023] Figure 3 for Figure 1 Diagram showing the replacement of the middle filter with a rotating filter;

[0024] Figure 4 for Figure 3 Schematic diagram of the impurity filtration assembly inside the central drainage tube;

[0025] In the diagram: Waste alkali collection tank-1, waste alkali level gauge-11, waste liquid pump-12, filter box-2, rectangular box-21, filter screen-22, lower rotating shaft-231, upper rotating shaft-232, rotary filter screen-233, rotary motor-234, waste trough-235, baffle plate-236, filter support-241, rotary drum-242, rotating filter screen-243, receiving trough-244, filter motor-245, drain pipe-3, fixed drain pipe trough-31, drain pipe cover plate-32, filtrate collection tank-4, collection tank-41, outlet pipe-42, outlet pump-43, impurity filtration assembly-5, filter screen-51, filter screen fixing bracket-52, collection tank level gauge-6, automatic control cabinet-7, cabinet body-71, cabinet door-72, PLC controller-73, audible and visual alarm-74. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Please refer to Figure 1-4 , Figure 1 This is a schematic diagram of the present invention; Figure 2 for Figure 1 Diagram showing the replacement of the middle filter with a rotary filter; Figure 3 for Figure 1 Diagram showing the replacement of the middle filter with a rotating filter; Figure 4 for Figure 3 Schematic diagram of the impurity filtration assembly inside the central drainage tube.

[0028] This utility model provides a filtrate collection device for industrial waste alkali treatment, which is used to collect and reuse waste alkali liquid generated in the industrial production process after filtration; it includes a waste alkali liquid collection tank 1, a filter box 2, a diversion pipe 3, and a filtrate collection tank 4 connected in sequence. An impurity filtration component 5 is installed in the diversion pipe 3, and a collection tank level gauge 6 is installed in the filtrate collection tank 4. The waste alkali liquid collection tank 1, the filter box 2, the diversion pipe 3, the filtrate collection tank 4, and the collection tank level gauge 6 are electrically connected to an automatic control cabinet 7.

[0029] The waste alkali collection tank 1 is located within the production plant area and is connected to each waste alkali discharge point of the production unit via a guide pipe. It is used to collect the discharged waste alkali into the waste alkali collection tank 1 for temporary storage. The waste alkali collection tank 1 is equipped with a waste alkali level gauge 11 for detecting the liquid level in the waste alkali collection tank 1. The waste alkali level gauge 11 is electrically connected to the automatic control cabinet 7. The waste alkali collection tank 1 is also equipped with a waste liquid reduction pump 12, which is electrically connected to the automatic control cabinet 7. The waste liquid reduction pump 12 is connected to the filter box 2 via a pipe.

[0030] The filter box 2 includes a rectangular box 21 with an open top. The bottom of the rectangular box 21 is concave and tapered, and a drain pipe 3 is connected to the lowest point. A waste alkali inlet is located on one side wall of the rectangular box 21 near the top and is connected to the outlet pipe of the waste liquid pump 12. A removable filter screen 22 is installed inside the filter box 2 below the waste alkali inlet to filter out large particles of impurities in the waste alkali. The filtered waste alkali collects at the bottom of the rectangular box 21 and automatically flows into the drain pipe 3.

[0031] The drainage pipe 3 is a pipe or rectangular pipe with its lower end connected to the filtrate collection tank 4. The drainage pipe 3 includes a lower fixed drainage pipe groove 31 and an upper detachable drainage pipe cover plate 32. The fixed drainage pipe groove 31 and the drainage pipe cover plate 32 are locked together by a locking buckle, and the joint is sealed to prevent leakage of waste alkali liquid. An impurity filtration assembly 5 is provided in the fixed drainage pipe groove 31 for filtering the waste alkali liquid.

[0032] The filtrate collection tank 4 includes a collection tank 41 with an open top, which is located below the end outlet of the drainage pipe 3. The bottom of the collection tank 41 is convex and has an outlet pipe 42 at the lowest point, which is connected to an outlet pump 43. The outlet pipe of the outlet pump 43 is connected to the production device for reusing the filtered alkali solution. The outlet pump 43 is electrically connected to the automatic control cabinet 7.

[0033] The impurity filtration assembly 5 includes multiple layers of filter screens 51. The filtration aperture of the multiple layers of filter screens 51 gradually decreases along the filtration direction to ensure filtration quality. Each layer of filter screen 51 is fixedly fitted with a filter screen fixing frame 52 on its outer side, and the filter screen fixing frame 52 is fixedly installed in the fixed drainage pipe groove 31.

[0034] The collection tank 41 is equipped with a collection tank level gauge 6, which is electrically connected to the automatic control cabinet 7, for real-time detection of the liquid level in the collection tank 41.

[0035] The automatic control cabinet 7 includes a rectangular cabinet 71 with a door 72 hinged to its front side. The cabinet 71 houses a PLC controller 73, which is electrically connected to the waste alkali liquid level gauge 11, the waste liquid reduction pump 12, the outlet pump 43, and the collection tank level gauge 6 via corresponding controllers. The PLC controller 73 controls the waste alkali liquid level gauge 11 and the waste liquid reduction pump 12 in a coordinated manner, and controls the outlet pump 43 and the collection tank level gauge 6 in a coordinated manner. The top of the cabinet 71 is equipped with an audible and visual alarm 74, which is controlled by the PLC controller 73 in a coordinated manner with the collection tank level gauge 6. When an abnormality is detected in the collection tank 41, an alarm is issued to remind the operator to handle the filtrate in a timely manner.

[0036] A touch screen is embedded in the cabinet door 72 and is electrically connected to the PLC controller 73. Multiple control switches are located below the touch screen.

[0037] In a new embodiment, the rectangular housing 21 has a lower rotating shaft 231 mounted on the lower part of the inner side wall where the waste alkali inlet is located via a bearing seat, and an upper rotating shaft 232, extending above the top edge of the rectangular housing 21, mounted on the outer side wall opposite to it via a bracket. A rotatable filter screen 233 is mounted on both the lower rotating shaft 231 and the upper rotating shaft 232. A rotary motor 23, electrically connected to the automatic control cabinet 7, is mounted at one end of the upper rotating shaft 232. 4. A waste trough 235 is provided below the highest point of the rotary filter screen 233 to receive the filtered waste; a baffle plate 236 extending obliquely downward toward the rotary filter screen 233 is provided on the side wall above the lower rotating shaft 231 to ensure that all the waste alkali liquid in the waste alkali liquid inlet can fall onto the rotary filter screen 233, thereby ensuring filtration efficiency; the rotary motor 234 is controlled in conjunction with the waste alkali liquid level gauge 11 and the waste liquid reduction pump 12 through the PLC controller 73.

[0038] In a new embodiment, a filter support 241 is provided on the top of the rectangular box 21. A rotary drum 242 is provided on the filter support 241 via a bearing seat. One end of the rotary drum 242 is rotatably connected to the outlet pipe of the waste liquid reducing pump 12, and the other end is connected to a conical rotary filter screen 243. The edge of the rotary filter screen 243 extends beyond the edge of the rectangular box 21 and a receiving groove 244 is provided below it. Gear teeth are provided on the outer wall of the rotary drum 242 and a filter motor 245 is provided on the filter support 241 through gear meshing. The filter motor 245 is linked and controlled by the PLC controller 73 with the waste alkali liquid level gauge 11 and the waste liquid reducing pump 12.

[0039] The inner wall of the rectangular box 21, the filter screen 22, the rotary filter screen 233, the inner wall of the rotary drum 242, and the rotating filter screen are all coated with an anti-corrosion coating to prevent corrosion caused by waste alkali liquid and extend their service life.

[0040] All components of the impurity filtration assembly 5 are made of stainless steel, which is corrosion-resistant and has high strength, and can adapt to the treatment environment of waste alkali liquid.

[0041] The liquid level gauge 6 in the collection tank adopts an ultrasonic liquid level sensor, which has the advantages of high measurement accuracy, fast response speed and non-contact measurement, and can accurately monitor the liquid level changes in the filtrate collection tank.

[0042] During operation, waste alkali liquid from the production unit is discharged into the waste alkali liquid collection tank 1 through a guide pipe. When the waste alkali liquid level gauge 11 reaches the detection upper limit, it sends a signal to the PLC controller 73. The PLC controller 73 controls the waste liquid pump 12 to pump the waste alkali liquid to the filter box 2 for coarse filtration to remove large particulate impurities. The filtered filtrate flows into the filtrate collection tank 4 through the guide pipe 3. In the guide pipe 3, the impurity filter assembly 5 further filters the filtrate to remove fine impurities. The collection tank level gauge 6 monitors the liquid level in the filtrate collection tank 4 in real time. When the liquid level reaches the preset height, it sends a signal to the PLC controller 73. The PLC controller 73 controls the discharge pump 43 to transport the filtrate back to the production unit for reuse. In addition, when the collection tank level gauge 6 detects that the liquid level in the filtrate collection tank 4 exceeds the upper limit, it will control the audible and visual alarm 74 through the PLC controller 73 to issue an alarm, reminding the operator to handle the filtrate in time.

[0043] Although embodiments of the present invention have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, it will be understood by those skilled in the art that all other embodiments obtained by making various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention and without creative effort are within the scope of protection of the present invention.

Claims

1. A filtrate collection device for industrial waste alkali treatment, characterized in that: The system includes a waste alkali collection tank (1), a filter box (2), a drain pipe (3), and a filtrate collection tank (4) connected in sequence. An impurity filtration assembly (5) is installed inside the drain pipe (3), and a collection tank level gauge (6) is installed inside the filtrate collection tank (4). The waste alkali collection tank (1), filter box (2), drain pipe (3), filtrate collection tank (4), and collection tank level gauge (6) are electrically connected to an automatic control cabinet (7). The filter box (2) is equipped with a waste alkali liquid level gauge (11) and a waste liquid reduction pump (12) connected to the filter box (2) via a pipe. The filter box (2) includes a rectangular box (21) with an open top and a removable filter screen (22) inside. The bottom of the rectangular box (21) is concave and a drain pipe (3) is connected at the lowest point. A waste alkali liquid inlet is provided above the filter screen (22) on the upper part of one side wall and connected to the outlet pipe of the waste liquid reduction pump (12). The channel is connected; the lower end of the drainage pipe (3) is connected to the filtrate collection tank (4); the drainage pipe (3) has a built-in impurity filtration assembly (5); the filtrate collection tank (4) is located below the end outlet of the drainage pipe (3) and includes a collection tank (41) with an open top and a built-in collection tank level gauge (6). The bottom of the collection tank (41) is convex and an outlet pipe (42) is set at the lowest point, which is then connected to the production device through an outlet pump (43); the impurity filtration assembly (5) includes multiple layers of filter screens (51), and each layer of filter screen (51) is fixedly fitted with a filter screen fixing frame (52) on the outside, and the filter screen fixing frame (52) is fixedly set in the fixed drainage pipe (3); the automatic control cabinet (7) includes a rectangular cabinet (71) and a cabinet door (72) is hinged to its front side. The cabinet (71) has a built-in PLC controller (73) and an audible and visual alarm (74) on the top.

2. The filtrate collection device for industrial waste alkali treatment according to claim 1, characterized in that: The waste alkali collection tank (1) is located in the production plant area and is connected to each waste alkali discharge point of the production unit through a guide pipe.

3. The filtrate collection device for industrial waste alkali treatment according to claim 2, characterized in that: The rectangular box (21) has a lower rotating shaft (231) installed on the lower part of the inner side wall where the waste alkali inlet is located via a bearing seat, and an upper rotating shaft (232) installed on the outer side wall opposite to it via a bracket, which is higher than the top edge of the rectangular box (21) and has a rotary motor (234). A rotary filter screen (233) that can rotate is installed together by the lower rotating shaft (231) and the upper rotating shaft (232). A waste trough (235) is installed below the highest point of the rotary filter screen (233). A baffle plate (236) that extends obliquely downward toward the rotary filter screen (233) is installed on the side wall above the lower rotating shaft (231).

4. The filtrate collection device for industrial waste alkali treatment according to claim 2, characterized in that: The top of the rectangular box (21) is provided with a filter support (241) and a rotary drum (242) is provided on it via a bearing seat. One end of the rotary drum (242) is rotatably connected to the outlet pipe of the waste liquid pump (12), and the other end is connected to a conical rotary filter screen (243). The edge of the rotary filter screen (243) extends beyond the edge of the rectangular box (21) and a receiving groove (244) is provided below it. The outer wall of the rotary drum (242) is provided with gear teeth and is connected to a filter motor (245) provided on the filter support (241) through gear meshing.

5. The filtrate collection device for industrial waste alkali treatment according to claim 3 or 4, characterized in that: The drainage tube (3) is either a pipe or a rectangular tube.

6. The filtrate collection device for industrial waste alkali treatment according to claim 5, characterized in that: The drainage tube (3) includes a lower fixed drainage tube groove (31) and an upper detachable drainage tube cover plate (32). The fixed drainage tube groove (31) and the drainage tube cover plate (32) are locked together by a locking buckle and sealed at the joint. An impurity filter assembly (5) is provided in the fixed drainage tube groove (31).

7. The filtrate collection device for industrial waste alkali treatment according to claim 6, characterized in that: The liquid level gauge (6) in the collection tank is an ultrasonic liquid level sensor.

8. The filtrate collection device for industrial waste alkali treatment according to claim 7, characterized in that: The pore size of the multi-layered filter screen (51) gradually decreases along the filtration direction.

9. The filtrate collection device for industrial waste alkali treatment according to claim 8, characterized in that: The inner wall of the rectangular box (21), the filter screen (22), the rotary filter screen (233), the inner wall of the rotary drum (242), and the rotating filter screen are all coated with an anti-corrosion coating.

10. The filtrate collection device for industrial waste alkali treatment according to claim 9, characterized in that: The waste alkali liquid level gauge (11), waste liquid reduction pump (12), discharge pump (43), collection tank level gauge (6), rotary motor (234) and filter motor (245) are electrically connected to the PLC controller (73). The PLC controller (73) controls the waste alkali liquid level gauge (11) and waste liquid reduction pump (12), or both, in conjunction with the rotary motor (234) or filter motor (245), controls the discharge pump (43) in conjunction with the collection tank level gauge (6), and controls the audible and visual alarm (74) in conjunction with the collection tank level gauge (6).

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