A low-temperature evaporator for wastewater treatment

Abstract

This utility model relates to the field of wastewater treatment technology and discloses a low-temperature evaporator for wastewater treatment. The evaporator includes an evaporator body, with a non-stop filtration assembly installed at the wastewater inlet end. The non-stop filtration assembly includes a three-way valve, with diverter pipes installed at both outlet ends of the three-way valve. A filter body is fixed to the end of the diverter pipe furthest from the three-way valve, and an outlet connecting pipe is welded to the outlet end of the filter body. This low-temperature evaporator for wastewater treatment, by setting two filtration paths and switching the wastewater flow direction via the three-way valve, allows for arbitrary switching between the two filtration paths. One filtration path performs filtration while the other allows for filter element replacement, enabling filter element replacement without stopping the machine. This improves the continuity of wastewater treatment, ensures stable operation of the production process, and avoids production interruptions and economic losses caused by downtime for filter element replacement.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a low-temperature evaporator for wastewater treatment. Background Technology

[0002] With increasingly stringent environmental protection requirements, industrial wastewater treatment has become a problem that all manufacturing enterprises must face. Low-temperature evaporators, as a highly efficient and energy-saving wastewater concentration or zero-discharge treatment device, are widely used in various fields such as chemical, electroplating, pharmaceutical, and landfill leachate treatment. Their working principle involves using heat pumps and other systems to provide heat energy, causing wastewater to evaporate at a lower boiling point, thereby achieving the separation of water and pollutants.

[0003] The raw wastewater to be treated usually contains a large amount of suspended solids, colloids, fibers, or calcium and magnesium ions, which are prone to scaling. If these impurities directly enter the evaporator, they will continuously adhere to and deposit on the tube walls, which can significantly reduce heat exchange efficiency and increase energy consumption. The common practice in the industry is to install a filter in the inlet pipe before the raw liquid enters the evaporator in order to intercept most of the solid impurities in advance. As the operating time accumulates, the intercepted impurities will gradually clog the filter, resulting in an increase in the pressure difference across the filter and a decrease in the feed flow rate, until it is necessary to clean or replace it. However, replacing or cleaning existing filters requires interrupting the feeding process and may even require stopping the entire evaporation system, increasing equipment downtime and affecting the normal progress of wastewater treatment. At the same time, for industrial scenarios that require 24-hour continuous production, such periodic shutdown maintenance seriously disrupts the production rhythm, reduces the effective utilization rate of equipment, and cannot meet the urgent needs of modern production for continuous, stable, and efficient operation of equipment. Utility Model Content

[0004] In view of the problem that existing filters cannot replace filter elements without shutting down the system, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a low-temperature evaporator for wastewater treatment, which aims to achieve a pretreatment system that allows for the replacement of filter elements without stopping the machine and ensures the continuous and stable operation of the low-temperature evaporator.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a low-temperature evaporator for sewage treatment, comprising an evaporator body, wherein a non-stop filter assembly is installed at the sewage inlet end of the evaporator body; The non-stop filtration assembly includes a three-way valve, with a diversion pipe installed at each of the two outlet ends of the three-way valve. A filter body is fixed at the end of the diversion pipe away from the three-way valve, and an outlet connecting pipe is welded to the outlet end of the filter body. The filter body includes a tube, with a water outlet on the periphery of the tube and a water outlet pipe welded to the tube directly opposite the water outlet. A filter element is detachably installed inside the tube, and a plug plate is detachably installed at the bottom of the tube.

[0007] As an improved technical solution, a one-way valve is installed at the outlet end of the water outlet connecting pipe, and a manifold is installed between the outlet ends of the two one-way valves, with the outlet end of the manifold fixed at the sewage inlet of the evaporator body.

[0008] As an improved technical solution, the outer wall of the diversion pipe is fitted with a pipe support, and the bottom of the pipe support is fixed to the ground surface.

[0009] As an improved technical solution, a blocking disc is welded inside the tube body at one end away from the plug disc. A conical hole is opened at the center of the blocking disc, and the diameter of the end of the conical hole near the filter element is the same as the diameter of the inner hole of the filter element.

[0010] As an improved technical solution, a disc is provided at one end of the plug disc near the filter element, and a positioning protrusion is integrally formed at the center of the disc at the end away from the plug disc, and the positioning protrusion is engaged with the inner hole of the filter element.

[0011] As an improved technical solution, rubber blocks are bonded to the opposing surfaces of the plug disc and the disc, and the thickness of the rubber blocks is one centimeter.

[0012] As an improved technical solution, a flange is welded to one end of the pipe body near the end of the plug disc, and a fixing hole is opened on the outer edge of one end face of the plug disc, and the plug disc is fixedly connected to the flange by bolts and nuts.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are: 1. This utility model, by setting two filtration paths, allows the flow of sewage to be switched via a three-way valve. It enables arbitrary switching between the two filtration paths, with one path performing filtration while the other path allows for filter element replacement. This allows filter element replacement without stopping the machine, improving the continuity of sewage treatment, ensuring the stable operation of the production process, and avoiding production interruptions and economic losses caused by downtime for filter element replacement.

[0014] 2. In this utility model, when the filter element is located inside the tube, one end of the filter element abuts against the blocking disc, and the other end compresses the rubber block. Under the elastic action of the rubber block, the filter element is tightly squeezed between the blocking disc and the plug disc, which improves the firmness of the filter element installed inside the tube and ensures the stability of the filter element filtration. At the same time, the plug disc and the flange are fixed together by bolts and nuts, which facilitates quick installation and removal of the filter element and makes it more convenient. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the 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. Among them: Figure 1 This is a schematic diagram of the overall structure of a low-temperature evaporator for wastewater treatment according to the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of a non-stop filtration component for a low-temperature evaporator for wastewater treatment according to the present invention.

[0017] Figure 3 This is a cross-sectional structural diagram of the tube body of a low-temperature evaporator for wastewater treatment according to the present invention.

[0018] Figure 4 This utility model relates to a low-temperature evaporator for wastewater treatment. Figure 3 A schematic diagram of the structure at point A in the middle.

[0019] Explanation of reference numerals in the attached figures: 1. Evaporator body; 2. Filter assembly without shutting down; 3. Filter body; 31. Pipe; 32. Filter element; 33. Outlet port; 34. Baffle plate; 35. Conical hole; 36. Disc; 37. Positioning protrusion; 38. Rubber block; 39. Plug plate; 310. Fixing hole; 311. Flange; 4. Pipe rack; 5. Diverter pipe; 6. Three-way valve; 7. Outlet pipe; 8. Check valve; 9. Manifold. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Example 1 Reference Figures 1-4 This is the first embodiment of the present invention, which provides a low-temperature evaporator for wastewater treatment. This low-temperature evaporator for wastewater treatment includes an evaporator body 1, and a non-stop filter assembly 2 is installed at the wastewater inlet end of the evaporator body 1. The non-stop filter assembly 2 includes a three-way valve 6. Both outlet ends of the three-way valve 6 are equipped with diversion pipes 5. The end of the diversion pipe 5 away from the three-way valve 6 is fixed with a filter body 3. The outlet end of the filter body 3 is welded with an outlet connecting pipe 7. The filter body 3 includes a pipe body 31, with a water outlet 33 on the periphery of the pipe body 31, and a water outlet pipe 7 welded to the pipe body 31 directly opposite the water outlet 33. A filter element 32 is detachably installed inside the pipe body 31, and a plug plate 39 is detachably installed at the bottom of the pipe body 31.

[0022] A one-way valve 8 is installed at the outlet end of the water outlet pipe 7. A manifold 9 is installed between the outlet ends of the two one-way valves 8. The outlet end of the manifold 9 is fixed at the sewage inlet of the evaporator body 1. The one-way valve 8 ensures that sewage can only be discharged through the water outlet pipe 7 and cannot return to the interior of the filter body 3 through the water outlet pipe 7, thus ensuring normal water supply to the evaporator body 1 from both filtration paths.

[0023] The outer wall of the diversion pipe 5 is fitted with a pipe rack 4, and the bottom of the pipe rack 4 is fixed to the ground.

[0024] During use, by setting two filtration paths, the flow of sewage can be switched via the three-way valve 6. The system can switch between the two filtration paths at will, with one path performing filtration while the other path is used to replace the filter element 32. This allows the filter element 32 to be replaced without stopping the machine, improving the continuity of sewage treatment, ensuring the stable operation of the production process, and avoiding production interruptions and economic losses caused by stopping the machine to replace filter elements.

[0025] Example 2 Reference Figures 3-4 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that a blocking disc 34 is welded inside the tube body 31 at one end away from the plug disc 39. A conical hole 35 is opened at the center of the blocking disc 34, and the diameter of the end of the conical hole 35 near the filter element 32 is the same as the diameter of the inner hole of the filter element 32. The setting of the conical hole 35 guides the sewage, so that the sewage accurately enters the interior of the filter element 32, ensuring that all sewage passes through the filter element 32 for filtration, thereby improving the comprehensiveness of sewage filtration.

[0026] A disc 36 is provided at one end of the plug disc 39 near the filter element 32. A positioning protrusion 37 is integrally formed at the center of the end of the disc 36 away from the plug disc 39, and the positioning protrusion 37 is engaged with the inner hole of the filter element 32.

[0027] Rubber blocks 38 are bonded to the opposing surfaces of the plug disc 39 and the disc 36, and the thickness of the rubber blocks 38 is one centimeter. When the filter element 32 is located inside the tube body 31, one end of the filter element 32 abuts against the blocking disc 34, and the other end compresses the rubber block 38. Under the elastic action of the rubber block 38, the filter element 32 is tightly squeezed between the blocking disc 34 and the plug disc 39, which improves the firmness of the filter element 32 installed inside the tube body 31 and ensures the stability of the filter element 32 filtration.

[0028] A flange 311 is welded to one end of the pipe body 31 near the end of the plug plate 39. A fixing hole 310 is opened on the outer edge of one end face of the plug plate 39, and the plug plate 39 is fixedly connected to the flange 311 by bolts and nuts.

[0029] During use, the filter element 32 is installed as follows: the filter element 32 is snapped onto the plug plate 39 by the snap-fit ​​between the positioning protrusion 37 and the inner hole of the filter element 32. After the filter element 32 is sent into the inside of the tube body 31, the plug plate 39 and the flange 311 are fixed together with bolts and nuts, which makes it easier to quickly install and remove the filter element 32.

[0030] The remaining structure is the same as that in Example 1.

[0031] Based on embodiments 1-2, the working principle of this utility model is as follows: wastewater enters the filter body 3 through the three-way valve 6 and the diversion pipe 5 in sequence, and is filtered by the filter element 32. The filtered wastewater enters the evaporator body 1 through the outlet connecting pipe 7, the one-way valve 8 and the collecting pipe 9.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A low-temperature evaporator for wastewater treatment, comprising an evaporator body (1), characterized in that: The evaporator body (1) is equipped with a non-stop filter assembly (2) at the sewage inlet. The non-stop filter assembly (2) includes a three-way valve (6), and a diversion pipe (5) is installed at both outlet ends of the three-way valve (6). A filter body (3) is fixed at the end of the diversion pipe (5) away from the three-way valve (6), and an outlet connecting pipe (7) is welded to the outlet end of the filter body (3). The filter body (3) includes a pipe (31), with a water outlet (33) on the periphery of the pipe (31) and a water outlet pipe (7) welded to the pipe (31) directly opposite the water outlet (33). The filter element (32) is detachably installed inside the pipe (31), and a plug plate (39) is detachably installed at the bottom of the pipe (31).

2. The low-temperature evaporator for wastewater treatment according to claim 1, characterized in that: The outlet end of the water outlet pipe (7) is equipped with a one-way valve (8), and a manifold (9) is installed between the outlet ends of the two one-way valves (8), and the outlet end of the manifold (9) is fixed at the sewage inlet of the evaporator body (1).

3. A low-temperature evaporator for wastewater treatment according to claim 2, characterized in that: The outer wall of the diversion pipe (5) is fitted with a pipe rack (4), and the bottom of the pipe rack (4) is fixed to the ground.

4. A low-temperature evaporator for wastewater treatment according to claim 3, characterized in that: A blocking disc (34) is welded inside the tube body (31) and at one end away from the plug disc (39). A conical hole (35) is opened at the center of the blocking disc (34), and the diameter of the end of the conical hole (35) near the filter element (32) is the same as the diameter of the inner hole of the filter element (32).

5. A low-temperature evaporator for wastewater treatment according to claim 4, characterized in that: The end of the plug disc (39) near the filter element (32) is provided with a disc (36). The center of the disc (36) away from the end of the plug disc (39) is integrally formed with a positioning protrusion (37), and the positioning protrusion (37) is engaged with the inner hole of the filter element (32).

6. A low-temperature evaporator for wastewater treatment according to claim 5, characterized in that: The opposing surfaces of the plug disc (39) and the disc (36) are both bonded with rubber blocks (38), and the thickness of the rubber blocks (38) is one centimeter.

7. A low-temperature evaporator for wastewater treatment according to claim 6, characterized in that: The pipe body (31) has a flange (311) welded to one end near the end plate (39). The end face of the end plate (39) has a fixing hole (310) on the outer edge. The end plate (39) is fixedly connected to the flange (311) by bolts and nuts.

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