A two-effect evaporative exhaust line having an oil phase enrichment chamber

Abstract

This utility model relates to the fields of chemical engineering, environmental protection, and wastewater treatment technology, and discloses a double-effect evaporation discharge pipeline with an oil phase enrichment chamber, including an evaporator. A drain pipe is installed on the lower surface of the evaporator, and a connecting pipe is installed at one end of the drain pipe. An oil-water pre-separation mechanism for pre-separating oil and water is installed at the other end of the connecting pipe. This utility model uses a connection structure between a suspended ball and an oil collection box to suspend the oil collection box on the liquid surface using the principle of buoyancy. The inlet of the oil collection box is lower than the top of the suspended ball, ensuring that the inlet is always precisely immersed in the surface oil phase layer. As the liquid level rises or falls or the oil phase is extracted, the oil collection box can automatically adjust its height in real time to follow the changes in the oil surface position without manual intervention or additional sensor control. This adaptive tracking mechanism ensures that the oil collection port is always accurately positioned above the oil-rich layer above the oil-water interface, effectively avoiding the intake of the lower water phase and significantly improving the purity of the collected oil and the separation efficiency.

Description

Technical Field

[0001] This utility model relates to the fields of chemical engineering, environmental protection and wastewater treatment technology, specifically a double-effect evaporation discharge pipeline with an oil phase enrichment cavity. Background Technology

[0002] In the fields of chemical industry, pharmaceutical industry, environmental protection and wastewater treatment, double-effect evaporators are widely used for the concentration treatment of oily waste liquid. After the oily waste liquid is heated and evaporated by the evaporator, the residual concentrate usually still contains a certain proportion of oil phase components. These oily concentrates need to be transported to subsequent separation equipment through discharge pipelines for oil-water separation treatment in order to achieve oil phase recovery or meet discharge standards.

[0003] Traditional double-effect evaporators have only a single drain pipe, which only has the function of guiding and discharging. It is difficult to perform any form of pre-separation of the oil-water mixture during the discharge process. This results in the oily waste liquid discharged from the evaporator directly entering the subsequent treatment equipment or storage tank. The oil phase and water phase are mixed and allowed to stand in the subsequent process before separation begins, which increases the processing burden of the downstream separation equipment and reduces the overall oil-water separation efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a dual-effect evaporation discharge pipeline with an oil phase enrichment chamber, which solves the problems of traditional fixed oil collection port or overflow weir structure, which cannot automatically adjust the height according to the liquid level fluctuation, causing the oil collection port to easily immerse in the aqueous phase layer and draw in a large amount of water, or to detach from the liquid surface and fail to collect oil, resulting in low oil purity and poor separation effect.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a double-effect evaporation discharge pipeline with an oil phase enrichment cavity, including an evaporator, a drain pipe installed on the lower surface of the evaporator, a connecting pipe installed at one end of the drain pipe, and an oil-water pre-separation mechanism installed at one end of the connecting pipe.

[0007] Furthermore, the oil-water pre-separation mechanism includes a liquid collection chamber, the inlet end of which is connected to a connecting pipe, a water outlet pipe is fixedly installed on the lower surface of the liquid collection chamber, two fixing plates are fixedly installed on the inner wall surface of the liquid collection chamber, and two guide slide rods are fixedly installed between the two fixing plates.

[0008] Furthermore, a slider is slidably connected to the outer surface of the two guide slide rods, a connecting rod is fixedly installed on one side of the slider, and an oil collection box is fixedly installed at one end of the connecting rod.

[0009] Furthermore, four mounting rods are fixedly installed on the periphery of the oil collection box, and a floating ball is fixedly installed at one end of each mounting rod. The inlet end of the oil collection box is lower than the top of the floating ball.

[0010] Furthermore, a pump is fixedly installed on the upper surface of the liquid collection chamber, and a liquid extraction pipe is fixedly installed at the input end of the pump. One end of the liquid extraction pipe is connected to the oil collection box and communicates with the interior of the oil collection box.

[0011] Furthermore, an oil outlet pipe is fixedly installed at the output end of the pump.

[0012] This utility model has the following beneficial effects:

[0013] (1) By setting up a connection structure between the suspension ball and the oil collection box, the oil collection box is made to float on the liquid surface by using the principle of buoyancy. The inlet end of the oil collection box is lower than the top of the suspension ball, ensuring that the inlet is always just immersed in the surface oil phase layer. As the liquid level rises or falls or the oil phase is extracted, the oil collection box can automatically adjust its height in real time according to the change of the oil surface position without manual intervention or additional sensor control. This adaptive tracking mechanism ensures that the oil collection port is always accurately located in the oil-rich layer above the oil-water interface, effectively avoiding the intake of the lower water phase, and significantly improving the oil collection purity and separation efficiency.

[0014] (2) In this utility model, two guide slide rods are fixedly installed between two fixed plates. The slider is slidably connected to the guide slide rods and connected to the oil collection box through a connecting rod. When the oil collection box rises and falls with the liquid level, the slider slides smoothly up and down along the guide slide rods, which constrains the movement trajectory of the oil collection box and ensures that it always maintains a horizontal posture during the floating process, without tilting, shaking or deviating. This avoids the problem of water phase entering one side of the inlet or oil layer being separated from the other side due to the tilt of the oil collection box, and further improves the continuity and reliability of oil collection.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0020] Figure 4 This is a schematic diagram of part of the oil-water pre-separation mechanism of this utility model;

[0021] The attached diagram lists the components represented by each number as follows:

[0022] In the diagram: 1. Evaporator; 2. Drain pipe; 3. Connecting pipe; 4. Oil-water pre-separation mechanism; 401. Liquid collection chamber; 402. Water outlet pipe; 403. Fixing plate; 404. Guide slide rod; 405. Sliding block; 406. Connecting rod; 407. Oil collection box; 408. Mounting rod; 409. Suspension ball; 410. Pump; 411. Liquid extraction pipe; 412. Oil outlet pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 As shown, this utility model is a double-effect evaporation discharge pipeline with an oil phase enrichment cavity, including an evaporator 1. A drain pipe 2 is installed on the lower surface of the evaporator 1. A connecting pipe 3 is installed at one end of the drain pipe 2. An oil-water pre-separation mechanism 4 that can pre-separate oil and water is installed at one end of the connecting pipe 3.

[0025] Evaporator 1: A device used for heating and evaporating oily waste liquid. It is equipped with a drain port at the bottom to discharge the residual oily mixture after evaporation and concentration to the subsequent pipeline.

[0026] Drain pipe 2: Fixedly installed on the lower surface of evaporator 1, serving as the first connecting pipe 3 for discharging oily waste liquid from evaporator 1, transporting the waste liquid from evaporator 1 to connecting pipe 3.

[0027] Connecting pipe 3: One end is connected to the drain pipe 2, and the other end is connected to the inlet end of the liquid collection chamber 401 of the oil-water pre-separation mechanism 4, serving as an intermediate transition and guiding function.

[0028] Oil-water pre-separation mechanism 4: Installed at the end of the connecting pipe 3, it is used to preliminarily separate the oil phase and water phase before the oily waste liquid enters the subsequent treatment stage, thereby reducing the processing burden of subsequent equipment.

[0029] The oil-water pre-separation mechanism 4 includes a liquid collection chamber 401, the inlet end of which is connected to the connecting pipe 3. A water outlet pipe 402 is fixedly installed on the lower surface of the liquid collection chamber 401. Two fixing plates 403 are fixedly installed on the inner wall surface of the liquid collection chamber 401, and two guide slide rods 404 are fixedly installed between the two fixing plates 403.

[0030] Liquid collection chamber 401: As the main container of the oil-water pre-separation mechanism 4, its inlet end is connected to the connecting pipe 3. The interior is used to contain the oily waste liquid discharged from the evaporator 1 and to provide a static space so that the oil phase naturally floats to the top and the water phase naturally sinks to form a stratification.

[0031] Water outlet pipe 402: Fixedly installed on the lower surface of the liquid collection chamber 401, located at the bottom of the liquid collection chamber 401, used to discharge the separated lower water phase from the liquid collection chamber 401 and transport it to the subsequent processing stage.

[0032] Fixed plates 403: There are two in total, which are fixedly installed on the inner wall surface of the liquid collection chamber 401, serving as the support base for the guide slide rod 404 and providing a stable mounting frame for the up and down floating of the oil collection box 407.

[0033] Guide slide rods 404: There are two in total, which are fixedly installed between two fixed plates 403 and arranged in the vertical direction. Their outer surfaces are smooth and are used to cooperate with the slider 405 to provide guidance and constraint for the lifting and lowering movement of the oil collection box 407.

[0034] Two guide rods 404 are slidably connected to a slider 405 on their outer surfaces. A connecting rod 406 is fixedly installed on one side of the slider 405, and an oil collection box 407 is fixedly installed on one end of the connecting rod 406.

[0035] Slider 405: Slidably connected to the outer surface of two guide slide rods 404, and can move freely up and down along the guide slide rods 404. A connecting rod 406 is fixedly installed on one side of it to transmit the movement of the oil collection box 407 to the guide slide rods 404.

[0036] Connecting rod 406: One end is fixedly installed on one side of slider 405, and the other end is fixedly installed on oil collection box 407. It is used to connect slider 405 and oil collection box 407 into one unit, so that oil collection box 407 can rise and fall smoothly along guide rod 404 together with slider 405.

[0037] Oil collection box 407: It is a box structure with an open top or an inlet end. Its inlet end is lower than the top of the suspension ball 409. It is connected to the slider 405 through the connecting rod 406 and is suspended on the liquid surface. It is used to collect the oil phase enriched on the surface.

[0038] Four mounting rods 408 are fixedly installed on the periphery of the oil collection box 407. A suspension ball 409 is fixedly installed on one end of each mounting rod 408. The inlet end of the oil collection box 407 is lower than the top of the suspension ball 409.

[0039] Mounting rods 408: There are four in total, which are fixedly installed on the periphery of the oil collection box 407. Each mounting rod 408 has a levitation ball 409 installed at its end, which is used to connect the levitation ball 409 to the oil collection box 407 so that the buoyancy generated by the levitation ball 409 can be transmitted to the oil collection box 407.

[0040] Suspension balls 409: There are four in total, which are fixedly installed at one end of the four mounting rods 408. They use their own buoyancy to make the oil collection box 407 float on the liquid surface, and ensure that the inlet of the oil collection box 407 is always immersed in the surface oil phase layer and does not sink into the water phase layer.

[0041] A pump 410 is fixedly installed on the upper surface of the liquid collection chamber 401. A liquid extraction pipe 411 is fixedly installed at the input end of the pump 410. One end of the liquid extraction pipe 411 is connected to the oil collection box 407 and communicates with the inside of the oil collection box 407.

[0042] An oil outlet pipe 412 is fixedly installed at the output end of the pump 410.

[0043] Pump 410: Fixedly installed on the upper surface of the liquid collection chamber 401, serving as the power source for oil pumping. Its input end is connected to the liquid pumping pipe 411, and its output end is connected to the oil outlet pipe 412. It is used to extract the oil phase collected in the oil collection box 407 and transport it to the designated collection point.

[0044] The suction pipe 411 has one end fixedly connected to the input end of the pump 410 and the other end connected to the oil collection box 407 and communicating with the inside of the oil collection box 407. It is used to draw the oil phase enriched in the oil collection box 407 to the pump 410.

[0045] Oil outlet pipe 412: Fixedly installed at the output end of pump 410, used to transport the oil phase extracted by pump 410 to a designated collection point or oil storage container outside.

[0046] Working principle: First, the oily waste liquid discharged from evaporator 1 enters the collection chamber 401 through drain pipe 2 and connecting pipe 3. Since oil density is less than water, after settling in the collection chamber 401, the oil phase floats to the top, and the water phase sinks to the bottom, forming natural stratification. The oil collection box 407 is connected to the suspension ball 409 through the mounting rod 408. The buoyancy generated by the suspension ball 409 makes the oil collection box 407 float on the liquid surface. Because the inlet end of the oil collection box 407 is lower than the top of the suspension ball 409, its inlet is always just immersed in the surface oil phase layer and will not sink into the water phase layer. At the same time, the sliding... Block 405 slides up and down along guide rod 404 to ensure that oil collection box 407 remains horizontal and stable as the liquid level rises and falls, without tilting or shifting. Then pump 410 starts and extracts the surface oil phase from inside oil collection box 407 through suction pipe 411, and then sends it to the designated collection point through oil outlet pipe 412. As the oil phase is extracted, oil collection box 407 and suspension ball 409 always automatically follow the liquid level change to continuously and accurately collect the floating oil phase. After the oil phase is separated, the lower water phase is discharged through water outlet pipe 402 at the bottom of collection chamber 401 and enters the subsequent processing stage.

[0047] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A two-effect evaporative exhaust pipeline with an oil phase enrichment cavity, comprising an evaporator (1), a liquid discharge pipe (2) is mounted on the lower surface of the evaporator (1), characterized in that: One end of the drain pipe (2) is equipped with a connecting pipe (3), and one end of the connecting pipe (3) is equipped with an oil-water pre-separation mechanism (4) that can pre-separate oil and water. The oil-water pre-separation mechanism (4) includes a liquid collection chamber (401), the inlet end of the liquid collection chamber (401) is connected to the connecting pipe (3), a water outlet pipe (402) is fixedly installed on the lower surface of the liquid collection chamber (401), and two fixing plates (403) are fixedly installed on the inner wall surface of the liquid collection chamber (401), and two guide slide rods (404) are fixedly installed between the two fixing plates (403). A slider (405) is slidably connected to the outer surface of the two guide slide rods (404). A connecting rod (406) is fixedly installed on one side of the slider (405), and an oil collection box (407) is fixedly installed at one end of the connecting rod (406). Four mounting rods (408) are fixedly installed on the periphery of the oil collection box (407), and a suspension ball (409) is fixedly installed on one end of each mounting rod (408). The inlet end of the oil collection box (407) is lower than the top of the suspension ball (409). A pump (410) is fixedly installed on the upper surface of the liquid collection chamber (401). A liquid extraction pipe (411) is fixedly installed at the input end of the pump (410). One end of the liquid extraction pipe (411) is connected to the oil collection box (407) and communicates with the inside of the oil collection box (407).

2. A two-effect evaporative exhaust line with an oil phase enrichment chamber according to claim 1, characterized in that: An oil outlet pipe (412) is fixedly installed at the output end of the pump (410).

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