2-chloro-5-chloromethylpyridine wastewater pretreatment device

Abstract

The utility model relates to the technical field of wastewater treatment, and discloses a 2-chloro-5-chloromethylpyridine wastewater pretreatment device which comprises a box body assembly and a cleaning and stirring assembly, the box body assembly comprises a stirring box, a cover plate installed on the stirring box, a first feeding pipe, a second feeding pipe, a servo motor, a discharging pipe arranged at the bottom of the stirring box and a first threaded rod arranged in the stirring box, wherein the first feeding pipe, the second feeding pipe and the servo motor are arranged on the cover plate. The top end of the first threaded rod is connected with the output end of the servo motor. According to the 2-chloro-5-chloromethylpyridine wastewater pretreatment device, forward rotation and reverse rotation of a servo motor alternately work, so that a cleaning assembly can reciprocate up and down, a tar-containing light phase adhered to the inner wall of a stirring box can be scraped, and meanwhile, mixed solutions at different positions can be screened and filtered; therefore, the stirring effect and the stirring efficiency are improved, and the problem that the inner wall is inconvenient to clean in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a 2-chloro-5-chloromethylpyridine wastewater pretreatment device. Background Art

[0002] 2-Chloro-5-chloromethylpyridine is an important intermediate for pesticides and drugs, and can be used to synthesize neonicotinoid insecticides such as imidacloprid, thiacloprid, acetamiprid, and nitenpyram. In the production process of 2-chloro-5-chloromethylpyridine, a large amount of acidic wastewater will be generated, which contains a large amount of phosphorus compounds, tar and 2-chloro-5-chloromethylpyridine and other substances. It has the characteristics of complex composition, high toxicity and difficulty in degradation. If it is directly discharged, it will cause serious pollution to the surrounding water environment. Therefore, this type of wastewater needs to be effectively treated.

[0003] After searching, the Chinese patent with application number 202310012896.4 discloses a method for treating 2-chloro-5-chloromethylpyridine production wastewater.

[0004] However, the prior art still has certain deficiencies when used. For example, in the prior art, an emulsifier is added to the 2-chloro-5-chloromethylpyridine production wastewater, stirred and mixed, a potassium hydroxide solution is added at 60°C to 70°C to a pH value of 7 to 8, and the mixture is allowed to stand to separate into a heavy phase and a light phase containing tar; that is, during the mixing and stirring, a light phase containing tar is generated in the mixed solution, and during the stirring process, the light phase containing tar will adhere to the inner wall of the stirring box, thereby making it difficult to clean.

[0005] The above contents are only used to assist in understanding the technical solution of the present utility model, and do not constitute an admission that the above contents are the closest prior art. Utility Model Content

[0006] The utility model provides a 2-chloro-5-chloromethylpyridine wastewater pretreatment device, which has the beneficial effects of being easy to clean the inner wall and having a high stirring effect, and solves the problem of inconvenient inner wall cleaning mentioned in the above background technology.

[0007] To achieve the above purpose, the utility model provides the following technical solution: a 2-chloro-5-chloromethylpyridine wastewater pretreatment device, comprising:

[0008] A box assembly, comprising a mixing box, a cover plate mounted on the mixing box, a first feed pipe, a second feed pipe and a servo motor arranged on the cover plate, a discharge pipe arranged at the bottom of the mixing box, and a first threaded rod arranged inside the mixing box, wherein the top end of the first threaded rod is connected to the output end of the servo motor, and the first threaded rod and the cover plate are rotatably connected;

[0009] The cleaning and stirring assembly comprises a cleaning assembly and a stirring assembly mounted on the first threaded rod.

[0010] Preferably, the cleaning assembly includes a screening assembly arranged on the first threaded rod, a scraping assembly installed on the screening assembly, and an anti-rotation assembly connected to the bottom of the cover plate.

[0011] Preferably, the cleaning assembly comprises an annular plate threadably connected to the first threaded rod, and a screen is embedded and installed on the upper surface of the annular plate.

[0012] Preferably, the scraping assembly comprises an annular scraper connected to the inner wall of the mixing box, a plurality of connecting plates are equidistantly arranged on the inner side surface of the annular scraper and the outer side surface of the annular plate, and a liquid guide groove is provided on the upper surface of the annular scraper.

[0013] Preferably, the anti-rotation assembly includes a limit rod rotatably connected to the annular plate, the top end of the limit rod is connected to the lower surface of the cover plate, the bottom end of the limit rod is provided with a limit plate, the lower surface of the limit plate is threaded with a fixing bolt, and the limit plate is detachably connected to the limit rod via the fixing bolt.

[0014] Preferably, the stirring assembly includes a plurality of fixed collars equidistantly arranged at the bottom end of the first threaded rod, and the outer sides of the plurality of fixed collars are fixedly connected to a plurality of stirring rods, and the size values ​​of the plurality of stirring rods decrease sequentially from top to bottom.

[0015] Preferably, the first threaded rod is composed of a second threaded rod and a connecting rod, a disassembly assembly is provided between the second threaded rod and the connecting rod, the cleaning assembly is provided on the second threaded rod, and the stirring assembly is provided on the connecting rod;

[0016] Among them, the disassembly and assembly component includes a threaded column connected to the top end of the connecting rod, and a threaded groove opened at the bottom end of the second threaded rod, the threaded column is threadedly sleeved in the interior of the threaded groove, and the bottom end of the connecting rod is threadedly sleeved with a reinforcing bolt, the top end of the reinforcing bolt passes through the interior of the threaded column and extends to the top end of the threaded groove, and the thread directions between the threaded column and the reinforcing bolt are opposite.

[0017] The utility model has the following beneficial effects:

[0018] The 2-chloro-5-chloromethylpyridine wastewater pretreatment device drives the first threaded rod to rotate by a servo motor, which can drive the stirring component to rotate synchronously, thereby stirring the mixed solution inside the stirring box. The servo motor works alternately in forward and reverse directions, so that the cleaning component can reciprocate up and down. Therefore, while scraping off the tar-containing light phase adhered to the inner wall of the stirring box, the mixed solution at different positions can also be screened and filtered, thereby improving its stirring effect and stirring efficiency, and solving the problem of inconvenient inner wall cleaning in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the main cross-sectional structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0022] Figure 4 For this utility model Figure 3 Schematic diagram of the structure viewed from above.

[0023] Figure 5 For this utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0024] In the figure: 100, box assembly; 200, cleaning and stirring assembly; 300, disassembly and assembly assembly;

[0025] Mixing box; 102, cover plate; 103, first feed pipe; 104, second feed pipe; 105, discharge pipe; 106, servo motor; 107, first threaded rod;

[0026] Second threaded rod; 1072, connecting rod;

[0027] Cleaning component; 202, stirring component;

[0028] Screening component; 2012, scraping component; 2013, anti-rotation component;

[0029] 20111, annular plate; 20112, screen;

[0030] 20121, annular scraper; 20122, connecting plate; 20123, liquid guide groove;

[0031] 20131, limit rod; 20132, limit plate; 20133, fixing bolt;

[0032] Fixed collar; 2022, stirring rod;

[0033] 301, threaded column; 302, threaded groove; 303, reinforcing bolt. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0035] See also Figure 1-Figure 4 A 2-chloro-5-chloromethylpyridine wastewater pretreatment device includes a box assembly 100 and a cleaning and stirring assembly 200. The box assembly 100 includes a stirring box 101, a cover plate 102 installed on the stirring box 101, a first feed pipe 103, a second feed pipe 104 and a servo motor 106 arranged on the cover plate 102, a discharge pipe 105 arranged at the bottom of the stirring box 101, and a first threaded rod 107 arranged inside the stirring box 101. The top end of the first threaded rod 107 is connected to the output end of the servo motor 106, and the first threaded rod 107 and the cover plate 102 are rotatably connected; the cleaning and stirring assembly 200 includes a cleaning assembly 201 and a stirring assembly 202 installed on the first threaded rod 107.

[0036] In this embodiment, the servo motor 106 drives the first threaded rod 107 to rotate, which can drive the stirring component 202 to rotate synchronously, thereby stirring the mixed solution inside the stirring box 101. The servo motor 106 rotates forward and reverse alternately, so that the cleaning component 201 can reciprocate up and down. Therefore, while scraping off the tar-containing light phase adhered to the inner wall of the stirring box 101, the mixed solution at different positions can also be screened and filtered, thereby improving its stirring effect and stirring efficiency.

[0037] Further, the cleaning assembly 201 includes a screening assembly 2011 arranged on the first threaded rod 107, a scraping assembly 2012 installed on the screening assembly 2011, and an anti-rotation assembly 2013 connected to the bottom of the cover plate 102; the cleaning assembly 201 includes an annular plate 20111 threadedly connected to the first threaded rod 107, and a screen 20112 is embedded and installed on the upper surface of the annular plate 20111; the scraping assembly 2012 includes an annular scraper 20121 connected to the inner wall of the mixing box 101, and the inner side surface of the annular scraper 20121 is connected to the annular plate 20111. A plurality of connecting plates 20122 are equidistantly arranged on the outer side surface of 111, and a liquid guide groove 20123 is provided on the upper surface of the annular scraper 20121; the anti-rotation component 2013 includes a limit rod 20131 rotatably connected to the annular plate 20111, the top of the limit rod 20131 is connected to the lower surface of the cover plate 102, and a limit plate 20132 is provided at the bottom end of the limit rod 20131, and a fixing bolt 20133 is threadedly sleeved on the lower surface of the limit plate 20132, and the limit plate 20132 is detachably connected to the limit rod 20131 through the fixing bolt 20133.

[0038] When the servo motor 106 is working, due to the threaded connection between the first threaded rod 107 and the annular plate 20111, the annular plate 20111 can move upward under the anti-rotation limiter action of the anti-rotation assembly 2013. When the annular plate 20111 moves upward, the mixed solution inside the stirring box 101 can be screened under the action of the screen 20112, thereby improving its stirring effect and stirring efficiency.

[0039] When the annular plate 20111 moves upward, the annular scraper 20121 can be driven to move synchronously under the connection of the connecting plate 20122, so as to scrape off the tar-containing light phase adhered to the inner wall of the mixing box 101;

[0040] By alternately rotating the servo motor 106 in the forward and reverse directions, the screening assembly 2011 and the scraping assembly 2012 can be moved up and down reciprocatingly;

[0041] After the stirring is completed, the mixed solution is allowed to stand to allow it to separate into a heavy phase and a light phase containing tar, and the heavy phase is first discharged through the discharge pipe 105, and then the light phase containing tar is discharged. After discharge, the servo motor 106 is turned on again. Under the action of the first threaded rod 107, the annular scraper 20121 in the cleaning component 201 can be reciprocated up and down. When the annular scraper 20121 moves upward, the light phase containing tar remaining on the inner wall of the mixing box 101 falls into the bottom of the mixing box 101 through the liquid guiding groove 20123, so as to prevent the light phase containing tar from accumulating on the annular scraper 20121.

[0042] It should also be noted that the bottom of the mixing box 101 may be funnel-shaped, and the discharge pipe 105 is disposed in the middle of the mixing box 101 to facilitate liquid discharge.

[0043] Furthermore, the stirring assembly 202 includes a plurality of fixed rings 2021 equidistantly arranged at the bottom end of the first threaded rod 107, and the outer sides of the plurality of fixed rings 2021 are fixedly connected to a plurality of stirring rods 2022, and the size values ​​of the plurality of stirring rods 2022 decrease from top to bottom. By setting the fixed rings 2021 and the stirring rods 2022, when the servo motor 106 drives the first threaded rod 107 to work, the stirring rods 2022 can be driven to rotate under the action of the fixed rings 2021, so that the mixed solution inside the stirring box 101 can be stirred. By reducing the size values ​​of the plurality of stirring rods 2022 from top to bottom, the setting range of the stirring blades can be increased to improve the stirring effect. Embodiment 2

[0044] The second embodiment is an improvement made on the basis of the first embodiment. The difference from the first embodiment is that Figure 1-Figure 5 The first threaded rod 107 is composed of a second threaded rod 1071 and a connecting rod 1072, a disassembly assembly 300 is arranged between the second threaded rod 1071 and the connecting rod 1072, a cleaning assembly 201 is arranged on the second threaded rod 1071, and a stirring assembly 202 is arranged on the connecting rod 1072;

[0045] Among them, the disassembly and assembly component 300 includes a threaded column 301 connected to the top of the connecting rod 1072, and a threaded groove 302 opened at the bottom end of the second threaded rod 1071. The threaded column 301 is threadedly sleeved inside the threaded groove 302, and the bottom end of the connecting rod 1072 is threadedly sleeved with a reinforcing bolt 303. The top end of the reinforcing bolt 303 passes through the inside of the threaded column 301 and extends to the top end of the threaded groove 302. The thread directions between the threaded column 301 and the reinforcing bolt 303 are opposite.

[0046] In this embodiment, by providing the disassembly assembly 300, the stirring assembly 202 can be partially replaced when it is damaged. When disassembling, the reinforcing bolt 303 is first removed, and then the threaded column 301 is removed from the inside of the thread groove 302, so as to complete the separation between the second threaded rod 1071 and the connecting rod 1072, and then the stirring assembly 202 can be disassembled. If installation is required, only the reverse operation is required;

[0047] Furthermore, the thread directions of the threaded column 301 and the reinforcing bolt 303 are opposite, which can increase the stability of the connection between the second threaded rod 1071 and the connecting rod 1072, and avoid the loosening of the first threaded rod 107 when the threaded column 301 and the thread groove 302 are used alone for connection when the first threaded rod 107 rotates forward and reverse.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A 2-chloro-5-chloromethylpyridine wastewater pretreatment device, characterized in that, include, A box assembly (100), comprising a mixing box (101), a cover plate (102) mounted on the mixing box (101), a first feed pipe (103), a second feed pipe (104) and a servo motor (106) arranged on the cover plate (102), a discharge pipe (105) arranged at the bottom of the mixing box (101), and a first threaded rod (107) arranged inside the mixing box (101), the top end of the first threaded rod (107) being connected to the output end of the servo motor (106), and the first threaded rod (107) and the cover plate (102) being rotationally connected; A cleaning and stirring assembly (200), comprising a cleaning assembly (201) and a stirring assembly (202) mounted on the first threaded rod (107); The cleaning assembly (201) comprises a screening assembly (2011) arranged on the first threaded rod (107), a scraping assembly (2012) installed on the screening assembly (2011), and an anti-rotation assembly (2013) connected to the bottom of the cover plate (102).

2. The 2-chloro-5-chloromethylpyridine wastewater pretreatment device according to claim 1, characterized in that: The cleaning assembly (201) comprises an annular plate (20111) threadedly connected to the first threaded rod (107), and a screen (20112) is embedded and installed on the upper surface of the annular plate (20111).

3. The 2-chloro-5-chloromethylpyridine wastewater pretreatment device according to claim 2, characterized in that: The scraping assembly (2012) comprises an annular scraper (20121) connected to the inner wall of the mixing box (101), a plurality of connecting plates (20122) are arranged equidistantly on the inner side surface of the annular scraper (20121) and the outer side surface of the annular plate (20111), and a liquid guide groove (20123) is provided on the upper surface of the annular scraper (20121).

4. The 2-chloro-5-chloromethylpyridine wastewater pretreatment device according to claim 3, characterized in that: The anti-rotation component (2013) comprises a limit rod (20131) rotatably connected to the annular plate (20111), the top end of the limit rod (20131) being connected to the lower surface of the cover plate (102), the bottom end of the limit rod (20131) being provided with a limit plate (20132), the lower surface of the limit plate (20132) being threadedly sleeved with a fixing bolt (20133), and the limit plate (20132) being detachably connected to the limit rod (20131) via the fixing bolt (20133).

5. The 2-chloro-5-chloromethylpyridine wastewater pretreatment device according to claim 1, characterized in that: The stirring assembly (202) comprises a plurality of fixed collars (2021) equidistantly arranged at the bottom end of the first threaded rod (107), the outer sides of the plurality of fixed collars (2021) being fixedly connected to a plurality of stirring rods (2022), and the size values ​​of the plurality of stirring rods (2022) decreasing from top to bottom.

6. The 2-chloro-5-chloromethylpyridine wastewater pretreatment device according to claim 1, characterized in that: The first threaded rod (107) is composed of a second threaded rod (1071) and a connecting rod (1072); a disassembly assembly (300) is provided between the second threaded rod (1071) and the connecting rod (1072); the cleaning assembly (201) is provided on the second threaded rod (1071); and the stirring assembly (202) is provided on the connecting rod (1072); The disassembly assembly (300) comprises a threaded column (301) connected to the top end of a connecting rod (1072), and a threaded groove (302) opened at the bottom end of the second threaded rod (1071); the threaded column (301) is threadedly sleeved inside the threaded groove (302); a reinforcing bolt (303) is threadedly sleeved at the bottom end of the connecting rod (1072); the top end of the reinforcing bolt (303) passes through the inside of the threaded column (301) and extends to the top end of the threaded groove (302); the thread directions of the threaded column (301) and the reinforcing bolt (303) are opposite.

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