Novel variable-frequency thickener device for evaporation system

Abstract

The utility model discloses a novel variable-frequency thickener device for an evaporation system, which comprises a shell, a cover body is mounted at the top end of the shell, a driving component is mounted at the top end of the cover body, the driving component is formed by combining a variable-frequency motor and a rotating shaft, a rotary filtering grid mesh is arranged in the shell, and the variable-frequency motor is connected with the rotating shaft. A thickener filtering grid plate is arranged above the rotary filtering grid mesh and installed on the inner wall of the cover body, a connecting protruding block is arranged in the center of the bottom of the rotary filtering grid mesh, and the connecting protruding block is fixedly connected with the bottom end of the rotating shaft through a fastening bolt. The salt-containing wastewater treatment device can adapt to salt-containing wastewater with different concentrations, can effectively prevent crystalline salt from being blocked in equipment, reduces parking caused by blockage of the equipment, reduces the cleaning difficulty and time of the equipment during parking, does not need to observe the feeding concentration by personnel, and greatly saves the labor cost.

Description

Technical Field

[0001] This utility model relates to the field of application equipment technology for high-salt wastewater concentration in evaporators, specifically a novel variable frequency thickener device for evaporation systems. Background Technology

[0002] High-salinity wastewater evaporation desalination technology (i.e., thermal method) uses external heat energy to evaporate water from a mixed solution. While cooling and recovering the steam, the high-salinity brine is concentrated, separating the salt from the water. Currently, most thermal desalination technologies used in high-salinity wastewater treatment are developed from seawater desalination technologies, with multi-stage flash evaporation, single / multi-effect evaporation, and mechanical vapor compression distillation being commonly employed.

[0003] In common evaporation systems, traditional thickeners mostly use gravity sedimentation. The salt concentration of the influent varies greatly. High salt concentration easily leads to a high salt content at the clarified liquid outlet, failing to achieve solid-liquid separation. If salt accumulates at the bottom of the thickener for a long time, it can even cause the thickener agitator to detach and the motor to burn out. Low salt concentration easily leads to low salt content at the concentrated liquid outlet, making subsequent centrifugation difficult and resulting in high water content in the effluent. During the evaporation and concentration of high-salt wastewater, the salt content of the concentrated liquid gradually increases with evaporation, easily leading to the above-mentioned problems. Therefore, in actual treatment, a large amount of manpower is required to control the feed rate, and cleaning the thickener is also required when the evaporation system is shut down, resulting in high labor costs and fatigue among on-site production personnel. Therefore, a new type of variable frequency thickener device for evaporation systems is designed. Utility Model Content

[0004] In view of the defects or deficiencies of thickeners used in evaporation systems, the purpose of this utility model is to provide a new type of variable frequency thickener device for evaporation systems, so as to solve the problems mentioned in the background art, such as large differences in the salt content of the influent, high salt content of the clarified liquid effluent, thickener detachment during stirring, and difficulty in removing salt from the centrifuge, thereby reducing labor costs.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a novel variable frequency thickener device for an evaporation system, comprising a housing: a cover is installed at the top of the housing, a drive assembly is installed at the top of the cover, the drive assembly is composed of a variable frequency motor and a rotating shaft, a rotating filter screen is provided inside the housing, a thickener filter screen is provided above the rotating filter screen, and the thickener filter screen is installed on the inner wall of the cover, and a connecting protrusion is provided at the center of the bottom of the rotating filter screen, and the connecting protrusion is fixedly connected to the bottom end of the rotating shaft by fastening bolts.

[0007] Preferably, the outer wall of the thickener filter grid is provided with external threads, and the inner wall of the cover is provided with internal threads, and the external threads on the thickener filter grid and the internal threads on the cover are connected by a threaded engagement.

[0008] Preferably, the top end of the rotating shaft extends outward through a through hole at the center of the thickener filter grid and a sealed bearing at the center of the top of the cover, and is connected to a variable frequency motor via a coupling. The variable frequency motor is mounted on the top of the mounting bracket, and the mounting bracket is mounted on the top of the cover.

[0009] Preferably, the lower surface of the thickener filter grid is provided with a circular groove, the top end of the rotating filter screen is located in the circular groove, and the outer wall of the rotating filter screen and the inner wall of the circular groove are in clearance fit.

[0010] Preferably, a second annular protrusion is provided on the lower part of the outer wall of the cover, and a first annular protrusion is provided on the upper part of the outer wall of the shell. The first annular protrusion and the second annular protrusion are fixedly connected by fastening bolts.

[0011] Preferably, an annular sealing block is provided at the bottom end of the cover, the annular sealing block is installed in an annular sealing groove, and the annular sealing groove is opened at the top of the shell. An external thread is provided on the outer wall of the annular sealing block, and an internal thread is provided on one side of the inner wall of the annular sealing groove. The external thread on the outer wall of the annular sealing block and the internal thread on the annular sealing groove are connected by a threaded engagement. A sealing ring is provided between the bottom end of the annular sealing block and the bottom end of the inner side of the annular sealing groove.

[0012] Preferably, a clear liquid outlet pipe is provided on one side of the top of the cover, a suspension feed pipe is provided on the upper side of one outer wall of the shell, and a concentrated liquid outlet pipe is provided at the center of the bottom of the shell. A valve body is provided on the clear liquid outlet pipe, the suspension feed pipe and the concentrated liquid outlet pipe. Four support columns are provided at the bottom of the shell, and the four support columns are arranged in a ring array.

[0013] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0014] Through a series of coordinated structural designs, this invention can effectively increase the processing capacity of the equipment compared with the prior art, enabling the equipment to adapt to saline wastewater of different concentrations. It can effectively prevent crystallized salt from clogging the equipment, reduce shutdowns caused by equipment blockage, reduce the difficulty and time of cleaning the thickener during shutdowns, and eliminate the need for personnel to observe the feed concentration, thus greatly saving labor costs. Attached Figure Description

[0015] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the overall internal structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the shell of this utility model.

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the cover of this utility model. Figure 1 .

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the cover of this utility model. Figure 2 .

[0021] Figure 6 This is a schematic diagram of the connection structure between the drive component and the rotating filter screen of this utility model.

[0022] Figure 7 This is a cross-sectional view of the connection structure between the drive component and the rotating filter screen of this utility model.

[0023] Figure 8 This is a schematic diagram of the three-dimensional structure of the thickener filter grid plate of this utility model. Figure 1 .

[0024] Figure 9 This is a schematic diagram of the three-dimensional structure of the thickener filter grid plate of this utility model. Figure 2 .

[0025] In the picture:

[0026] Shell; 101, First annular protrusion; 102, Annular sealing groove; 103, Suspension feed pipe; 104, Concentrate outlet pipe; 105, Support column;

[0027] 201. Cover body; 202. Mounting bracket; 203. Clear liquid outlet pipe; 204. Second annular protrusion; 205. Annular sealing block;

[0028] Drive components; 301, variable frequency motor; 302, rotating shaft;

[0029] Rotating filter screen; 401, connecting protrusion;

[0030] 500, Thickener filter grid; 501, Through hole; 502, Circular groove. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] like Figure 1-9 As shown, a novel variable frequency thickener device for an evaporation system includes a housing 100. A cover 200 is installed at the top of the housing 100, which mainly seals the housing 100. A drive assembly 300 is installed at the top of the cover 200. The drive assembly 300 can drive a rotating filter screen 400 to rotate. The drive assembly 300 is composed of a variable frequency motor 301 and a rotating shaft 302. The rotating filter screen 400 is arranged inside the housing 100. A thickener filter plate 500 is arranged above the rotating filter screen 400 and is installed on the inner wall of the cover 200. A connecting protrusion 401 is arranged at the center of the bottom of the rotating filter screen 400. The connecting protrusion 401 is fixedly connected to the bottom end of the rotating shaft 302 by fastening bolts. Because the connecting protrusion 401 is fixedly connected to the bottom end of the rotating shaft 302 by fastening bolts, the operator can disassemble, replace or clean the rotating filter screen 400.

[0035] The thickener filter plate 500 has external threads on its outer wall and internal threads on its inner wall. The external threads on the thickener filter plate 500 and the internal threads on the cover 200 are connected by a threaded engagement. Because the external threads on the thickener filter plate 500 and the internal threads on the cover 200 are connected by a threaded engagement, the thickener filter plate 500 can be disassembled, replaced, or cleaned by the operator.

[0036] The top end of the rotating shaft 302 passes through the through hole 501 at the center of the surface of the thickener filter grid plate 500 and the sealed bearing at the center of the top of the cover 200, and extends to the outside. It is connected to the variable frequency motor 301 through a coupling. When the variable frequency motor 301 is started, it can drive the rotating shaft 302 to rotate. The variable frequency motor 301 is installed on the top of the mounting bracket 201, and the mounting bracket 201 is installed on the top of the cover 200.

[0037] A circular groove 502 is provided on the lower surface of the thickener filter plate 500. The top of the rotating filter screen 400 is located in the circular groove 502, and the outer wall of the rotating filter screen 400 and the inner wall of the circular groove 502 are in clearance fit, which avoids the situation where high-salt wastewater material directly passes through the thickener filter plate 500 and is discharged from the clear liquid outlet pipe 202.

[0038] A second annular protrusion 203 is provided on the lower part of the outer wall of the cover 200, and a first annular protrusion 101 is provided on the upper part of the outer wall of the shell 100. The first annular protrusion 101 and the second annular protrusion 203 are fixedly connected by fastening bolts. Because the first annular protrusion 101 and the second annular protrusion 203 are fixedly connected by fastening bolts, the staff can disassemble and assemble the cover 200 and the shell 100.

[0039] An annular sealing block 204 is provided at the bottom of the cover 200. The annular sealing block 204 is installed in the annular sealing groove 102, which is located at the top of the housing 100. The outer wall of the annular sealing block 204 is provided with external threads, and one inner wall of the annular sealing groove 102 is provided with internal threads. The external threads on the outer wall of the annular sealing block 204 and the internal threads on the annular sealing groove 102 are threadedly connected. A sealing ring is provided between the bottom end of the annular sealing block 204 and the bottom inner side of the annular sealing groove 102. Because the external threads on the outer wall of the annular sealing block 204 and the internal threads on the annular sealing groove 102 are threadedly connected, and a sealing ring is provided between the bottom end of the annular sealing block 204 and the bottom inner side of the annular sealing groove 102, the connection between the cover 200 and the housing 100 can be sealed.

[0040] A clear liquid outlet pipe 202 is provided on one side of the top of the cover 200 for discharging clear liquid. A suspension feed pipe 103 is provided on the upper side of the outer wall of the shell 100 for injecting high-salt wastewater into the shell 100. A concentrated liquid outlet pipe 104 is provided at the center of the bottom of the shell 100 for discharging concentrated liquid. A valve body is provided on the clear liquid outlet pipe 202, the suspension feed pipe 103, and the concentrated liquid outlet pipe 104. Four support columns 105 are provided at the bottom of the shell 100 and are arranged in a ring array.

[0041] When thickening high-salt wastewater, the high-salt wastewater material to be used is injected into the shell 100 through the suspension feed pipe 103 connected to the shell 100. Then, the variable frequency motor 301 starts and drives the rotating shaft 302 to rotate. The rotation of the rotating shaft 302 drives the rotating filter screen 400 to rotate. The thickening is separated by rotating the rotating filter screen 400. The clear liquid is discharged through the clear liquid outlet pipe 202, and the concentrated liquid is discharged to the centrifuge for centrifugation to remove salt through the concentrated liquid outlet pipe 104. The variable frequency motor 301 can adjust the current according to the salt concentration of the feed to prevent salt from clogging the surface of the filter structure and increase the effective filtration time. When stopping, the current of the variable frequency motor 301 can be turned up to the maximum to increase the rotation speed of the rotating filter screen 400 and reduce the time for cleaning.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the invention. For those skilled in the art, various modifications and variations can be made to this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A novel variable frequency thickener device for an evaporation system, comprising a housing (100), characterized in that: A cover (200) is installed at the top of the housing (100), and a drive assembly (300) is installed at the top of the cover (200). The drive assembly (300) is composed of a variable frequency motor (301) and a rotating shaft (302). A rotating filter screen (400) is provided inside the housing (100). A thickener filter screen (500) is provided above the rotating filter screen (400), and the thickener filter screen (500) is installed on the inner wall of the cover (200). A connecting protrusion (401) is provided at the center of the bottom of the rotating filter screen (400), and the connecting protrusion (401) is fixedly connected to the bottom end of the rotating shaft (302) by fastening bolts.

2. The novel variable frequency thickener device for an evaporation system according to claim 1, characterized in that: The thickener filter grid plate (500) has an external thread on its outer wall and the cover (200) has an internal thread on its inner wall. The external thread on the thickener filter grid plate (500) and the internal thread on the cover (200) are connected by a threaded fit.

3. The novel variable frequency thickener device for an evaporation system according to claim 1, characterized in that: The top end of the rotating shaft (302) extends through the through hole (501) at the center of the surface of the thickener filter grid plate (500) and the sealed bearing at the center of the top of the cover (200) to the outside and is connected to the variable frequency motor (301) through a coupling. The variable frequency motor (301) is mounted on the top of the mounting bracket (201), and the mounting bracket (201) is mounted on the top of the cover (200).

4. The novel variable frequency thickener device for an evaporation system according to claim 1, characterized in that: The lower surface of the thickener filter grid plate (500) is provided with a circular groove (502), the top of the rotating filter screen (400) is located in the circular groove (502), and the outer wall of the rotating filter screen (400) and the inner wall of the circular groove (502) are in clearance fit.

5. The novel variable frequency thickener device for an evaporation system according to claim 1, characterized in that: A second annular protrusion (203) is provided on the lower part of the outer wall of the cover (200), and a first annular protrusion (101) is provided on the upper part of the outer wall of the shell (100). The first annular protrusion (101) and the second annular protrusion (203) are fixedly connected by fastening bolts.

6. The novel variable frequency thickener device for an evaporation system according to claim 1, characterized in that: The bottom end of the cover (200) is provided with an annular sealing block (204), which is installed in an annular sealing groove (102) and the annular sealing groove (102) is opened at the top of the shell (100). The outer wall of the annular sealing block (204) is provided with an external thread, and the inner wall of one side of the annular sealing groove (102) is provided with an internal thread. The external thread on the outer wall of the annular sealing block (204) and the internal thread on the annular sealing groove (102) are connected by a threaded fit. A sealing ring is provided between the bottom end of the annular sealing block (204) and the bottom end of the inner side of the annular sealing groove (102).

7. The novel variable frequency thickener device for an evaporation system according to claim 1, characterized in that: A clear liquid outlet pipe (202) is provided on one side of the top of the cover (200), a suspension feed pipe (103) is provided on the upper side of the outer wall of the shell (100), and a concentrated liquid outlet pipe (104) is provided at the center of the bottom of the shell (100). A valve body is provided on the clear liquid outlet pipe (202), the suspension feed pipe (103) and the concentrated liquid outlet pipe (104). A support column (105) is provided at the bottom of the shell (100). There are four support columns (105), and the four support columns (105) are arranged in a ring array.

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