Wastewater treatment device for removing COD (Chemical Oxygen Demand) from high-salinity wastewater

Abstract

The utility model provides a wastewater treatment device for removing COD (Chemical Oxygen Demand) in high-salinity wastewater, which relates to the technical field of wastewater treatment devices and comprises a bottom plate, a barrel body is fixedly connected onto the bottom plate, a liquid inlet pipe is fixedly connected onto the barrel body, a heating pipe is arranged on the barrel body, a motor is fixedly connected onto the barrel body, and the motor is fixedly connected onto the barrel body. A motor is fixedly connected to the bottom plate, a stirring shaft is fixedly connected to an output shaft of the motor, a plurality of stirring blades are fixedly connected to the stirring shaft, a guide pipe is fixedly connected to the barrel body, a box body is fixedly connected to the bottom plate, the guide pipe is communicated with the box body, and the guide pipe is communicated with the barrel body. According to the utility model, the problems of low stirring efficiency, higher stirring power for achieving the required stirring effect and energy consumption increase caused by the fact that a dead zone, namely an area which cannot be touched by stirring, is easily generated in a reactor due to unidirectional stirring, the stirring is insufficient, and local temperature difference is easily generated in a solution are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment devices, in particular to a wastewater treatment device for removing COD from high-salt wastewater. Background Art

[0002] High-salt wastewater refers to wastewater containing a higher concentration of dissolved salts, usually wastewater with a total dissolved solids (TDS) concentration of more than 1%. This type of wastewater mainly comes from chemical, pharmaceutical, petroleum refining, desalination brine, agricultural drainage, mining and certain industrial processes. Currently, this type of wastewater is mostly treated by evaporation, concentration and crystallization.

[0003] In the process of using the current wastewater treatment equipment for removing COD from high-salt wastewater, the staff often finds that during evaporation, concentration and crystallization, in order to improve the evaporation efficiency, an agitator is used to stir the wastewater. However, the currently commonly used method is one-way stirring to accelerate the evaporation efficiency. One-way stirring is prone to produce dead zones in the reactor, that is, areas that cannot be reached by stirring. If the stirring is insufficient, local temperature differences are prone to occur in the solution, resulting in low stirring efficiency. Higher stirring power is required to achieve the desired stirring effect, which leads to increased energy consumption. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a wastewater treatment device for removing COD from high-salt wastewater.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a wastewater treatment device for removing COD from high-salt wastewater, comprising a bottom plate, a barrel body is fixedly connected to the bottom plate, a liquid inlet pipe is fixedly connected to the barrel body, a heating pipe is arranged on the barrel body, a motor is fixedly connected to the barrel body, a stirring shaft is fixedly connected to the output shaft of the motor, a plurality of stirring blades are fixedly connected to the stirring shaft, a conduit is fixedly connected to the barrel body, a box body is fixedly connected to the bottom plate, the conduit is connected to the box body, the conduit is connected to the barrel body, a stirring structure is arranged on the bottom plate, the stirring structure is mainly composed of a rotating shaft, the rotating shaft is rotatably inserted on the barrel body, the rotating shaft is rotatably connected to the stirring shaft, and two L-shaped rods are fixedly connected to the rotating shaft.

[0006] The effects achieved by the above components are as follows: wastewater is introduced into the barrel through the liquid inlet pipe, the heating tube is started to heat the wastewater, and after reaching the boiling point, the steam enters the box through the conduit, condenses into liquid, and flows out through the outlet pipe, while the impurities in the wastewater are crystallized in the barrel. During the heating and evaporation process, the motor is started, and the output shaft of the motor drives the stirring shaft to rotate, thereby driving the stirring blades to stir the wastewater. At this time, the rotating shaft can be rotated in the opposite direction, so that the two L-shaped rods stir the wastewater in the opposite direction, which can improve the stirring effect and thus improve the evaporation efficiency, thereby avoiding the dead zone easily generated in the reactor due to unidirectional stirring, that is, the area that the stirring cannot reach, the insufficient stirring, and the local temperature difference easily appearing in the solution, resulting in low stirring efficiency, and requiring a higher stirring power to achieve the required stirring effect, which leads to increased energy consumption.

[0007] Preferably, a rotating rod is rotatably connected to the L-shaped rod, three rectangular plates are fixedly connected to the rotating rod, and a plurality of through holes are formed on the rectangular plates.

[0008] The effects achieved by the above components are: during the rotation of the L-shaped rod, the wastewater pushes the rectangular plate, causing the rotating rod to rotate, and the plurality of rectangular plates stir the wastewater in multiple directions, further improving the stirring adequacy, and the through holes can prevent excessive resistance during the rotation of the rectangular plates.

[0009] Preferably, a first bevel gear is fixedly connected to the stirring shaft, a second bevel gear is fixedly connected to the rotating shaft, a third bevel gear is meshedly connected to the first bevel gear and the second bevel gear, a fixing rod is fixedly connected to the barrel body, and the fixing rod is rotationally connected to the third bevel gear.

[0010] The effect achieved by the above components is: when the stirring shaft rotates, it will drive the first bevel gear to rotate, and under the action of the third bevel gear, it can drive the second bevel gear to rotate in the opposite direction, thereby causing the rotating shaft and the stirring shaft to rotate in the opposite direction, making the operation more convenient.

[0011] Preferably, an annular groove is provided on the upper inner wall of the barrel body, and the L-shaped rod is slidably connected to the annular groove.

[0012] The effect achieved by the above components is that the two L-shaped rods slide in the annular grooves in a limited position, so that the rotation process of the L-shaped rods is more stable.

[0013] Preferably, a cleaning structure is provided on each of the two L-shaped rods, and the cleaning structure is mainly composed of two rectangular rods, the two rectangular rods are fixedly connected to the L-shaped rod, and a scraper is commonly provided on the two rectangular rods.

[0014] The effect achieved by the above components is that the rotation of the L-shaped rod will drive the scraper to rotate, thereby cleaning the inner wall of the barrel to prevent the wastewater from becoming viscous and sticking to the inner wall of the barrel when the molecular weight of the organic matter is large and evaporates and concentrates to a certain extent.

[0015] Preferably, a slide groove is provided on the rectangular rod, a sliding block is slidably connected in the slide groove, and the sliding block is fixedly connected to the scraper.

[0016] The effect achieved by the above components is that the position of the scraper can be adjusted by sliding the slider so that the scraper fits the inner wall of the barrel, thereby improving the cleaning effect.

[0017] Preferably, a spring is fixedly connected to the inner wall of the slide groove, and one end of the spring is fixedly connected to the slide block.

[0018] The effect achieved by the above components is: when the scraper cleans the inner wall of the barrel, the spring is in a contracted state, and under the action of the spring rebound force, the scraper always fits the inner wall of the barrel, and the force is increased, further improving the cleaning effect.

[0019] Preferably, a sliding rod is fixedly connected to the scraper, and the sliding rod is slidably inserted on the L-shaped rod.

[0020] The effect achieved by the above components is that the slide bar slides within the upper limit of the L-shaped bar, so that the scraper is more stable during the movement.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are that, in the utility model, by setting a stirring structure, starting a motor, the output shaft of the motor drives the stirring shaft to rotate, and then drives the stirring blades to stir the wastewater. At this time, the rotating shaft can be rotated in the opposite direction, so that the two L-shaped rods stir the wastewater in the opposite direction, which can improve the stirring effect and thus improve the evaporation efficiency. During the rotation of the L-shaped rod, the wastewater pushes the rectangular plate, so that the rotating rod rotates, and the plurality of rectangular plates stir the wastewater in multiple directions, further improving the stirring adequacy, and the through hole can prevent the rectangular plate from having too much resistance during the rotation process. When the stirring shaft rotates, it drives the first bevel gear to rotate, and under the action of the third bevel gear, it can drive the second bevel gear to rotate in the opposite direction, thereby causing the rotating shaft and the stirring shaft to rotate in the opposite direction, making the operation more convenient, and the two L-shaped rods slide in the annular groove in a limited position, so that the rotation process of the L-shaped rod is more stable, thereby avoiding the dead zone easily generated in the reactor due to unidirectional stirring, that is, the area that cannot be reached by the stirring, the stirring is insufficient, and the local temperature difference is easy to appear in the solution, so that the stirring efficiency is not high, and a higher stirring power is required to achieve the required stirring effect, which leads to increased energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1The utility model provides a three-dimensional structural schematic diagram of a wastewater treatment device for removing COD from high-salt wastewater;

[0023] Figure 2 A schematic diagram of the three-dimensional structure of another perspective of a wastewater treatment device for removing COD from high-salt wastewater proposed in the utility model;

[0024] Figure 3 This is a partial schematic diagram of a stirring structure of a wastewater treatment device for removing COD from high-salt wastewater proposed in the utility model;

[0025] Figure 4 Another partial schematic diagram of the stirring structure of a wastewater treatment device for removing COD from high-salt wastewater proposed in the utility model.

[0026] Legend: 1. Bottom plate; 2. Barrel body; 3. Motor; 4. Stirring shaft; 5. Stirring blade; 6. Conduit; 7. Box body; 8. Stirring structure; 81. Rotating shaft; 82. L-shaped rod; 83. Rotating rod; 84. Rectangular plate; 85. Through hole; 86. First bevel gear; 87. Second bevel gear; 88. Third bevel gear; 89. Fixed rod; 810. Annular groove; 9. Cleaning structure; 91. Rectangular rod; 92. Sliding block; 93. Scraper; 94. Spring; 95. Sliding rod; 96. Sliding groove; 10. Water outlet pipe. DETAILED DESCRIPTION

[0027] Embodiment 1, as Figure 1 As shown, a wastewater treatment device for removing COD from high-salt wastewater includes a bottom plate 1, a barrel body 2 is fixedly connected to the bottom plate 1, a liquid inlet pipe is fixedly connected to the barrel body 2, a heating pipe is arranged on the barrel body 2, a motor 3 is fixedly connected to the barrel body 2, a stirring shaft 4 is fixedly connected to the output shaft of the motor 3, a plurality of stirring blades 5 are fixedly connected to the stirring shaft 4, a conduit 6 is fixedly connected to the barrel body 2, a box body 7 is fixedly connected to the bottom plate 1, the conduit 6 is connected to the box body 7, and the conduit 6 is connected to the barrel body 2.

[0028] Reference Figures 1 to 4A stirring structure 8 is provided on the bottom plate 1. The stirring structure 8 is mainly composed of a rotating shaft 81. The rotating shaft 81 is rotatably inserted on the barrel body 2. The rotating shaft 81 is rotatably connected to the stirring shaft 4. Two L-shaped rods 82 are fixedly connected to the rotating shaft 81. The wastewater is introduced into the barrel body 2 through the liquid inlet pipe, and the heating pipe is started to heat the wastewater. After reaching the boiling point, the steam enters the box body 7 through the conduit 6, condenses into liquid, and flows out through the outlet pipe 10, while the impurities in the wastewater are crystallized in the barrel body 2. During the heating and evaporation process, the motor 3 is started, and the output shaft of the motor 3 drives the stirring shaft 4 rotates, thereby driving the stirring blade 5 to stir the wastewater. At this time, the rotating shaft 81 can be rotated in the opposite direction, so that the two L-shaped rods 82 stir the wastewater in the opposite direction, which can improve the stirring effect and thus improve the evaporation efficiency, thereby avoiding the dead zone easily generated in the reactor due to unidirectional stirring, that is, the area that cannot be reached by the stirring, the insufficient stirring, the easy occurrence of local temperature differences in the solution, the low stirring efficiency, the need for a higher stirring power to achieve the desired stirring effect, and the increase in energy consumption. The L-shaped rod 82 is rotatably connected with a rotating rod 83, and the rotating rod Three rectangular plates 84 are fixedly connected to the L-shaped rod 83, and a plurality of through holes 85 are opened on the rectangular plates 84. During the rotation of the L-shaped rod 82, the wastewater pushes the rectangular plates 84, so that the rotating rod 83 rotates. The plurality of rectangular plates 84 stir the wastewater in multiple directions, further improving the stirring adequacy, and the through holes 85 can prevent excessive resistance during the rotation of the rectangular plates 84. A first bevel gear 86 is fixedly connected to the stirring shaft 4, and a second bevel gear 87 is fixedly connected to the rotating shaft 81. The first bevel gear 86 and the second bevel gear 87 are meshed and connected to each other. A three-bevel gear 88 is fixedly connected to the barrel body 2 with a fixed rod 89, and the fixed rod 89 is rotatably connected to the third bevel gear 88. When the stirring shaft 4 rotates, the first bevel gear 86 will be driven to rotate. Under the action of the third bevel gear 88, the second bevel gear 87 can be driven to rotate in the opposite direction, thereby making the rotating shaft 81 and the stirring shaft 4 rotate in the opposite direction, making the operation more convenient. An annular groove 810 is provided on the upper inner wall of the barrel body 2, and the L-shaped rod 82 is slidably connected to the annular groove 810. The two L-shaped rods 82 slide in the annular groove 810 to limit the rotation process of the L-shaped rod 82.

[0029] Reference Figure 2The two L-shaped rods 82 are both provided with a cleaning structure 9, which is mainly composed of two rectangular rods 91, which are fixedly connected to the L-shaped rods 82, and the two rectangular rods 91 are jointly provided with a scraper 93. The rotation of the L-shaped rod 82 will drive the scraper 93 to rotate, thereby cleaning the inner wall of the barrel body 2 to prevent the wastewater from becoming viscous and sticking to the inner wall of the barrel body 2 when the molecular weight of the organic matter is large and the evaporation concentration reaches a certain degree. A slide groove 96 is provided on the rectangular rod 91, and a slider 92 is slidably connected in the slide groove 96. The slider 92 is fixedly connected to the scraper 93, and the scraper 93 can be adjusted by sliding the slider 92. 3, so that the scraper 93 fits the inner wall of the barrel body 2, improving the cleaning effect, the inner wall of the slide groove 96 is fixedly connected with a spring 94, one end of the spring 94 is fixedly connected to the slider 92, when the scraper 93 cleans the inner wall of the barrel body 2, the spring 94 is in a contracted state, under the action of the rebound force of the spring 94, the scraper 93 is always in contact with the inner wall of the barrel body 2, and the force is increased, further improving the cleaning effect, the scraper 93 is fixedly connected with a slide bar 95, the slide bar 95 is slidably inserted on the L-shaped rod 82, the slide bar 95 slides at the upper limit of the L-shaped rod 82, so that the scraper 93 is more stable during the movement.

[0030] Working principle: wastewater is introduced into the barrel body 2 through the liquid inlet pipe, and the heating tube is started to heat the wastewater. After reaching the boiling point, the steam enters the box body 7 through the conduit 6, condenses into liquid, and flows out through the outlet pipe 10, while the impurities in the wastewater are crystallized in the barrel body 2. During the heating and evaporation process, the motor 3 is started, and the output shaft of the motor 3 drives the stirring shaft 4 to rotate, thereby driving the stirring blade 5 to stir the wastewater. At this time, the rotating shaft 81 can be rotated in the opposite direction, so that the two L-shaped rods 82 stir the wastewater in the opposite direction, which can improve the stirring effect and thus improve the evaporation efficiency, thereby avoiding the dead zone that is easily generated in the reactor due to unidirectional stirring, that is, the area that the stirring cannot reach, the insufficient stirring, the local temperature difference that is easy to appear in the solution, the stirring efficiency is not high, and a higher stirring power is required to achieve the desired stirring effect, which leads to increased energy consumption. During the rotation of the L-shaped rod 82, the wastewater pushes the rectangular plate 84, so that the rotating rod 83 rotates, and a plurality of rectangular plates 84 stir the wastewater in multiple directions, further improving the stirring adequacy, and the through hole 85 can prevent the rectangular The plate 84 has too much resistance during rotation. When the stirring shaft 4 rotates, the first bevel gear 86 is driven to rotate. Under the action of the third bevel gear 88, the second bevel gear 87 can be driven to rotate in the opposite direction, thereby making the rotating shaft 81 and the stirring shaft 4 rotate in the opposite direction, making the operation more convenient. The two L-shaped rods 82 slide in the annular groove 810, making the rotation process of the L-shaped rod 82 more stable. The rotation of the L-shaped rod 82 drives the scraper 93 to rotate, thereby cleaning the inner wall of the barrel 2 to prevent the organic matter from evaporating and concentrating to a certain degree when the molecular weight is large. When the waste water becomes viscous and sticks to the inner wall of the barrel body 2, the position of the scraper 93 can be adjusted by sliding the slider 92 so that the scraper 93 fits the inner wall of the barrel body 2 to improve the cleaning effect. When the scraper 93 cleans the inner wall of the barrel body 2, the spring 94 is in a contracted state. Under the action of the rebound force of the spring 94, the scraper 93 always fits the inner wall of the barrel body 2, and the force is increased, further improving the cleaning effect. The slide bar 95 slides on the upper limit of the L-shaped rod 82, making the scraper 93 more stable during movement.

[0031] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

Claims

1. A wastewater treatment device for removing COD from high-salinity wastewater, comprising a bottom plate (1), characterized in that: The bottom plate (1) is fixedly connected to a barrel body (2), a liquid inlet pipe is fixedly connected to the barrel body (2), a heating pipe is arranged on the barrel body (2), a motor (3) is fixedly connected to the barrel body (2), a stirring shaft (4) is fixedly connected to the output shaft of the motor (3), a plurality of stirring blades (5) are fixedly connected to the stirring shaft (4), a conduit (6) is fixedly connected to the barrel body (2), a box body (7) is fixedly connected to the bottom plate (1), the conduit (6) is connected to the box body (7), the conduit (6) is connected to the barrel body (2), a stirring structure (8) is arranged on the bottom plate (1), the stirring structure (8) is mainly composed of a rotating shaft (81), the rotating shaft (81) is rotatably inserted on the barrel body (2), the rotating shaft (81) is rotatably connected to the stirring shaft (4), and two L-shaped rods (82) are fixedly connected to the rotating shaft (81).

2. The wastewater treatment device for removing COD from high-salinity wastewater according to claim 1, characterized in that: The L-shaped rod (82) is rotatably connected to a rotating rod (83), and the rotating rod (83) is fixedly connected to three rectangular plates (84), and the rectangular plates (84) are provided with a plurality of through holes (85).

3. The wastewater treatment device for removing COD from high-salinity wastewater according to claim 2, characterized in that: A first bevel gear (86) is fixedly connected to the stirring shaft (4), a second bevel gear (87) is fixedly connected to the rotating shaft (81), a third bevel gear (88) is meshedly connected to the first bevel gear (86) and the second bevel gear (87), a fixing rod (89) is fixedly connected to the barrel body (2), and the fixing rod (89) is rotationally connected to the third bevel gear (88).

4. The wastewater treatment device for removing COD from high-salinity wastewater according to claim 3, characterized in that: An annular groove (810) is provided on the upper inner wall of the barrel body (2), and the L-shaped rod (82) is slidably connected to the annular groove (810).

5. The wastewater treatment device for removing COD from high-salinity wastewater according to claim 4, characterized in that: A cleaning structure (9) is provided on each of the two L-shaped rods (82). The cleaning structure (9) is mainly composed of two rectangular rods (91). The two rectangular rods (91) are fixedly connected to the L-shaped rod (82). A scraper (93) is provided on the two rectangular rods (91).

6. The wastewater treatment device for removing COD from high-salinity wastewater according to claim 5, characterized in that: The rectangular rod (91) is provided with a sliding groove (96), a sliding block (92) is slidably connected in the sliding groove (96), and the sliding block (92) is fixedly connected to the scraper (93).

7. The wastewater treatment device for removing COD from high-salinity wastewater according to claim 6, characterized in that: A spring (94) is fixedly connected to the inner wall of the slide groove (96), and one end of the spring (94) is fixedly connected to the slide block (92).

8. The wastewater treatment device for removing COD from high-salinity wastewater according to claim 7, characterized in that: The scraper (93) is fixedly connected with a sliding rod (95), and the sliding rod (95) is slidably inserted on the L-shaped rod (82).

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