Saline water refining preprocessor

Abstract

The utility model relates to a brine refining pretreater, which comprises a brine tank, a filter cartridge fixedly connected to the top of the brine tank, a scraper in sliding connection in the filter cartridge, a reciprocating lead screw in threaded connection with the scraper, a blow-off pipe arranged at the top of the filter cartridge, a brine pipe connected to the filter cartridge, and the brine pipe penetrating through the brine tank to be connected with an external pipeline. A water outlet is formed in the bottom of the brine tank. According to the brine refining pretreater, brine is filtered through the pressure difference inside and outside the filter cartridge, precipitates and flocculates in the brine are isolated in the filter cartridge, filtration of the brine can be rapidly completed, the treatment efficiency is high, and the production requirement can be met.

Description

Technical Field

[0001] The utility model relates to chemical technology, in particular to a brine refining preprocessor. Background Art

[0002] In the production of ion-exchange membrane chlor-alkali, the refining process of primary brine is a crucial step. The effect of brine refining directly affects the quality and output of the product. Crude brine contains a large amount of silt, floccules and impurities. Before the brine is refined, it is necessary to remove impurities from the crude brine. Usually, a pre-treatment device is used for treatment. The brine is filtered, precipitated and flocculated in the pre-treatment device to clarify, and finally the impurities are discharged through the mud discharge device of the pre-treatment device.

[0003] The current impurity removal methods are still gravity clarification processes, which take a long time, cannot meet production needs, and have low processing efficiency. Utility Model Content

[0004] The utility model aims to provide a brine refining pretreatment device, which is used to solve the problem that the gravity clarification process is used in the brine refining pretreatment process, the treatment time is long, the treatment efficiency is low, and the production needs cannot be met.

[0005] In order to solve the above problems, the utility model provides a brine refining preprocessor, including a brine tank, a filter cartridge is fixedly connected to the top of the brine tank, a slidably connected scraper is arranged in the filter cartridge, a reciprocating screw is threadedly connected to the scraper, a sewage pipe is arranged on the top of the filter cartridge, a brine pipe is connected to the filter cartridge, the brine pipe passes through the brine tank and is connected to an external pipeline, and a water outlet is arranged at the bottom of the brine tank.

[0006] The utility model provides a brine refining pretreatment device which also has the following technical features:

[0007] Furthermore, a guide rod is fixedly connected inside the filter cartridge, the guide rod is slidably connected to the scraper, and a groove adapted to the reciprocating screw is provided at the bottom of the filter cartridge, and the groove is rotatably connected to the reciprocating screw.

[0008] Furthermore, a flexible rubber ring is sleeved on the outer edge of the scraper.

[0009] Furthermore, a motor is fixedly mounted on the top of the filter cartridge, and a drive shaft of the motor is fixedly connected to the reciprocating screw.

[0010] Furthermore, a pressure check valve is provided on the sewage pipe, and the other end of the sewage pipe is connected to a sludge dewatering component.

[0011] Furthermore, the sludge dewatering assembly includes an outer cylinder and an extrusion cylinder. The outer cylinder is sleeved on the extrusion cylinder. The sewage pipe passes through the outer cylinder and is connected to the extrusion cylinder. An extrusion piston is slidably connected inside the extrusion cylinder. The initial position of the extrusion piston is located above the sewage pipe. The upper half of the extrusion cylinder is provided with filter holes arranged in an array, and a removable pressure-resistant cover is installed at the bottom of the extrusion cylinder.

[0012] Furthermore, an electric push rod is fixedly connected to the top of the extrusion cylinder, and a push rod of the electric push rod is fixedly connected to the extrusion piston.

[0013] Furthermore, a pipeline connected to the brine tank is provided at the bottom of the outer cylinder.

[0014] The utility model has the following beneficial effects: the brine refining pretreatment device described in the present application uses the pressure difference between the inside and outside of the filter cartridge to filter the brine, so that the sediment and flocculants in the brine are isolated in the filter cartridge, the brine can be filtered quickly, the processing efficiency is high, and it can meet the production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an axonometric schematic diagram of a brine refining preprocessor according to an embodiment of the utility model;

[0016] Figure 2 It is a front cross-sectional axonometric view of a brine refining preprocessor according to an embodiment of the utility model;

[0017] Figure 3 The brine refining preprocessor of the utility model embodiment Figure 2 Enlarged view of node A in the middle.

[0018] (1-brine tank, 2-filter cartridge, 3-scraper, 4-reciprocating screw, 5-drain pipe, 6-brine pipe, 7-water outlet, 8-guide rod, 9-rubber ring, 10-motor, 11-pressure check valve, 12-sludge dewatering assembly, 121-outer cylinder, 122-extrusion cylinder, 123-extrusion piston, 124-filter hole, 125-pressure cover, 126-electric push rod) DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0020] like Figures 1 to 3In the embodiment of the brine refining preprocessor of the utility model shown, the brine refining preprocessor includes a brine tank 1, a filter cartridge 2 is fixedly connected to the top of the brine tank 1, a slidably connected scraper 3 is arranged in the filter cartridge 2, a reciprocating screw 4 is threadedly connected to the scraper 3, a sewage pipe 5 is arranged on the top of the filter cartridge 2, a brine pipe 6 is connected to the filter cartridge 2, the brine pipe 6 passes through the brine tank 1 and is connected to an external pipeline, and a water outlet 7 is arranged at the bottom of the brine tank 1.

[0021] Specifically, crude brine is passed into the filter cartridge 2 through the brine pipe 6, and the water outlet 7 at the bottom of the brine tank 1 is opened to form a pressure difference between the inside and outside of the filter cartridge 2, and the impurities in the crude brine are filtered by the filter cartridge 2, and the filtered brine enters the next process from the water outlet 7 at the bottom of the brine tank 1, and the filtration efficiency decreases or the brine pipe 6 is closed at a fixed time, so that the reciprocating screw 4 rotates, and the scraper 3 moves along the reciprocating screw 4 toward the top of the filter cartridge 2 to discharge the impurities in the filter cartridge 2 from the sewage pipe 5 at the top. When the scraper 3 moves to the top, it returns to the bottom of the filter cartridge 2, and the brine pipe 6 is opened to continue working.

[0022] In one embodiment of the present application, preferably, a guide rod 8 is fixedly connected inside the filter cartridge 2, and the guide rod 8 is slidably connected to the scraper 3. The bottom of the filter cartridge 2 is provided with a groove adapted to the reciprocating screw 4, and the groove is rotatably connected to the reciprocating screw 4, for limiting the scraper 3 from rotating with the reciprocating screw 4 when the reciprocating screw 4 rotates, and the groove is used to prevent the reciprocating screw 4 from shaking.

[0023] In one embodiment of the present application, preferably, a flexible rubber ring 9 is sleeved on the outer edge of the scraper 3 to prevent impurities and sediments from escaping from around the scraper when scraping the filter cartridge 2 upward, and to prevent the scraper 3 from damaging the filter cartridge 2.

[0024] In one embodiment of the present application, preferably, a motor 10 is fixedly mounted on the top of the filter cartridge 2, and a drive shaft of the motor 10 is fixedly connected to the reciprocating screw 4 for driving the reciprocating screw 4 to rotate.

[0025] In one embodiment of the present application, preferably, a pressure check valve 11 is provided on the sewage pipe 5, and the other end of the sewage pipe 5 is connected to a sludge dewatering assembly 12. The pressure check valve 11 is used to withstand a certain pressure without opening the valve when the scraper 3 moves upward to squeeze the sediment and the brine mixture, so that the brine is filtered from the filter cartridge 2 into the brine tank 1, and at the same time, the sewage pipe 5 can only flow outward in one direction.

[0026] In one embodiment of the present application, preferably, the sludge dewatering assembly 12 includes an outer cylinder 121 and an extrusion cylinder 122, the outer cylinder 121 is sleeved on the extrusion cylinder 122, the sewage pipe 5 passes through the outer cylinder 121 and is connected to the extrusion cylinder 122, an extrusion piston 123 is slidably connected in the extrusion cylinder 122, the initial position of the extrusion piston 123 is located above the sewage pipe 5, the upper half of the extrusion cylinder 122 is provided with filter holes 124 arranged in an array, and a detachable filter is installed at the bottom of the extrusion cylinder 122. The pressure-resistant cover 125, specifically, when the mixed liquid of the sediment and the brine flows into the extrusion cylinder 122 through the one-way valve 11 on the sewage pipe 5, the extrusion piston 123 is started to squeeze toward the bottom of the extrusion cylinder 122, and the brine in the mixed liquid enters the outer cylinder 121 through the filter hole 124 on the extrusion cylinder 122. The extrusion piston 123 continues to squeeze downward until the brine in the sediment is squeezed out, and the pressure-resistant cover 125 at the bottom of the extrusion cylinder 122 is opened to push the dehydrated sediment out of the extrusion cylinder 122.

[0027] In one embodiment of the present application, preferably, an electric push rod 126 is fixedly connected to the top of the extrusion cylinder 122 , and a push rod of the electric push rod 126 is fixedly connected to the extrusion piston 123 for pushing the extrusion piston 123 .

[0028] In one embodiment of the present application, preferably, a pipe connected to the brine tank 1 is provided at the bottom of the outer cylinder 121, so that the brine squeezed and filtered in the outer cylinder 121 flows into the brine tank 1 for use.

[0029] In summary, the brine refining preprocessor in the above embodiment of the utility model, specifically, the crude brine is passed into the filter cartridge 2 through the brine pipe 6, the water outlet 7 at the bottom of the brine tank 1 is opened, so that a pressure difference is formed inside and outside the filter cartridge 2, and the impurities in the crude brine are filtered by the filter cartridge 2, and the filtered brine enters the next process from the water outlet 7 at the bottom of the brine tank 1, and the filtration efficiency is reduced or the brine pipe 6 is closed at a fixed time, so that the motor 10 drives the reciprocating screw 4 to rotate, and the scraper 3 moves toward the top of the filter cartridge 2 along the guide rod 8. When the scraper 3 moves upward, due to the sealing effect of the rubber ring 9 and the effect of the pressure check valve 11 on the sewage pipe 5, the brine and The pressure of the impurity mixture increases, part of the brine is squeezed out through the filter cartridge 2, and part of the brine enters the extrusion cylinder 122 with the impurities through the pressure check valve 11. After the scraper 3 moves to the top, the electric push rod 126 is started to make the extrusion piston 123 squeeze the mixture in the direction of the pressure cover 125, so that the brine in the mixture enters the outer cylinder 121 through the filter hole 124 until the brine in the mixture is squeezed out, and then moves to the position of the extrusion cylinder 122 without the filter hole 124, and the pressure cover 125 is opened to discharge the dehydrated solid impurities out of the extrusion cylinder 122, and the brine in the outer cylinder 121 flows into the brine tank 1 through the pipeline. The device uses a filter cartridge to collect solids and discharge the mixture of solids and brine solution into the sludge dehydration component. The brine in the mixture is squeezed and filtered by the sludge dehydration component and recovered into the brine tank, which not only improves the efficiency of solid-liquid separation of crude brine, but also avoids the waste of resources and environmental pollution caused by discharging brine together when discharging sewage.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A brine refining pretreatment device, characterized in that: It comprises a brine tank, the top of which is fixedly connected with a filter cartridge, a slidably connected scraper is arranged inside the filter cartridge, a reciprocating screw is threadedly connected to the scraper, a sewage pipe is arranged on the top of the filter cartridge, a brine pipe is connected to the filter cartridge, the brine pipe passes through the brine tank and is connected to an external pipeline, and a water outlet is arranged at the bottom of the brine tank.

2. The brine refining pretreatment device according to claim 1, characterized in that: A guide rod is fixedly connected inside the filter cartridge, and the guide rod is slidably connected to the scraper. A groove adapted to the reciprocating screw is provided at the bottom of the filter cartridge, and the groove is rotatably connected to the reciprocating screw.

3. The brine refining pretreatment device according to claim 2, characterized in that: The outer edge of the scraper is sleeved with a flexible rubber ring.

4. The brine refining pretreatment device according to claim 3, characterized in that: A motor is fixedly mounted on the top of the filter cartridge, and a driving shaft of the motor is fixedly connected to the reciprocating screw.

5. The brine refining pre-processor according to claim 4, characterized in that: The sewage pipe is provided with a pressure check valve, and the other end of the sewage pipe is connected with a sludge dewatering component.

6. The brine refining pre-treatment device according to claim 5, characterized in that: The sludge dewatering assembly includes an outer cylinder and an extrusion cylinder, wherein the outer cylinder is sleeved on the extrusion cylinder, the sewage discharge pipe passes through the outer cylinder and is connected to the extrusion cylinder, an extrusion piston is slidably connected inside the extrusion cylinder, the initial position of the extrusion piston is located above the sewage discharge pipe, the upper half of the extrusion cylinder is provided with filter holes arranged in an array, and a detachable pressure-resistant cover is installed at the bottom of the extrusion cylinder.

7. The brine refining pre-treatment device according to claim 6, characterized in that: An electric push rod is fixedly connected to the top of the extrusion cylinder, and a push rod of the electric push rod is fixedly connected to the extrusion piston.

8. The brine refining pre-processor according to claim 7, characterized in that: A pipeline connected to the brine tank is provided at the bottom of the outer cylinder.

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