High-concentration wastewater stirring and evaporating device

Abstract

The utility model discloses a high-concentration wastewater stirring and evaporating device, which belongs to the technical field of wastewater treatment and comprises a tank body, a stirring shaft and a plurality of blades. The stirring shaft penetrates through the tank body and can rotate; the plurality of blades are positioned in the tank body, are fixed on the stirring shaft and rotate along with the stirring shaft; a steam inlet is formed in one end of the stirring shaft; the blades are hollow and are communicated with the stirring shaft; the blades are provided with multiple air holes penetrating through the side walls. Steam enters the tank body from the stirring shaft and then enters the tank body through the blades, and the high-concentration wastewater is fully contacted with the steam while being stirred, so that heat exchange and wastewater evaporation are realized. Steam enters the wastewater from the plurality of air holes in the plurality of blades, on one hand, the steam can be in full contact with the wastewater to improve the heat transfer efficiency, and on the other hand, due to release of the steam, more and more sticky concentrated wastewater can be more easily stirred, and the problem that the device is unstable due to difficulty in stirring is avoided. The heat exchanger has the advantages of high heat transfer efficiency, stable and reliable operation, low maintenance requirement and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, and relates to an evaporation device, in particular to a stirring evaporation device for high-concentration wastewater. Background Art

[0002] At present, the methods for treating industrial wastewater generally include physical, chemical, biological treatment or a combination thereof. Among them, the physical heating and concentration treatment method has high efficiency and can greatly reduce the volume of the waste liquid. The heat sources generally used are hot air, hot water or steam. The evaporation process is the main measure for the treatment, recycling and utilization of the waste liquid. This treatment method and process are widely used in modern industrial production, and their basic purpose is to remove the water in the waste liquid to become distilled water, and at the same time increase the concentration of the waste liquid to meet the requirements of subsequent treatment. The general stirring form used is a spiral stirrer.

[0003] The propeller stirrer is a stirring device widely used in industrial production. It generates forced convection and shear force through the rotation of the propeller blades, so that the stirred substances are evenly mixed, dissolved, emulsified, etc. However, the propeller stirrer is not suitable for substances with high viscosity. High-concentration sewage tends to be viscous during evaporation, which easily causes the device to be in an unstable state.

[0004] Therefore, it is necessary to design a stirring evaporation device for high-concentration wastewater to solve the above problems. Summary of the Utility Model

[0005] The utility model provides a stirring evaporation device for high-concentration wastewater to overcome the defects of the prior art.

[0006] To achieve the above object, the utility model provides a stirring evaporation device for high-concentration wastewater, including a tank body, and having the following characteristics: it further includes a stirring shaft and a plurality of blades; the stirring shaft penetrates through the tank body and can rotate; the plurality of blades are located inside the tank body, are all fixed on the stirring shaft and rotate therewith; the stirring shaft is hollow, and one end has a steam inlet; the blades are hollow and communicate with the stirring shaft; the blades have a plurality of air holes penetrating through their side walls.

[0007] Further, the plurality of blades are arranged at uniform intervals in the radial direction of the stirring shaft and are arranged in a spiral shape.

[0008] Further, the blade includes a blade body and a connecting pipe; the blade body is a hollow structure in the shape of a rod; the air holes are opened on the side wall of the blade body; the blade body is fixed at one end of the connecting pipe, the other end of the connecting pipe is fixed on the stirring shaft, and the blade body communicates with the stirring shaft through the connecting pipe.

[0009] Further, the stirring shaft is equipped with a sleeve; the sleeve is located inside the tank and is fixedly sleeved outside the stirring shaft; a number of mounting holes corresponding to the blades one by one are provided on the sleeve, and a number of corresponding communication holes are provided on the stirring shaft; the end of the blade connecting pipe is detachably installed in the corresponding mounting hole and is connected and communicated with the corresponding communication hole.

[0010] Further, the end of the connecting pipe has an external thread, the mounting hole has an internal thread matching it, and the end of the connecting pipe is threadedly connected to the mounting hole.

[0011] Further, the side wall of the tank has a sandwich layer, and a heat preservation layer formed by heat preservation cotton is filled in the sandwich layer.

[0012] Further, the material of the side wall of the tank is a heat-insulating material.

[0013] Further, one end of the tank is provided with a waste water inlet, and the other end is provided with a waste water outlet.

[0014] Further, the waste water inlet is located above the stirring shaft, and the waste water outlet is located below the stirring shaft.

[0015] Further, the top of the tank is provided with an exhaust port.

[0016] The beneficial effects of the present utility model are as follows: The present utility model provides a high-concentration waste water stirring and evaporation device. A stirring structure composed of a stirring shaft and blades is arranged inside the tank. At the same time, the stirring shaft and the blades are hollow and communicated, and the blades have a number of air holes. Steam enters from the stirring shaft and then enters the tank through the blades. While the high-concentration waste water is being stirred, it fully contacts with the steam, realizing heat exchange and evaporation of the waste water. The steam enters the waste water from a number of air holes on a number of blades. On the one hand, it can fully contact with the waste water to improve the heat transfer efficiency. On the other hand, due to the release of the steam, it is easier to stir the increasingly viscous concentrated waste water, avoiding the problem of device instability caused by difficult stirring. At the same time, due to the continuous stirring action of the blades, the possibility of air hole blockage is effectively reduced, ensuring the continuity and stability of steam input, having a dynamic self-cleaning effect, thus significantly improving the reliability and service life of the device and reducing the maintenance requirements. In addition, this device integrates steam heating and stirring on the same structure, simplifies the multi-component independent design common in traditional waste water treatment equipment, greatly optimizes the overall layout, and reduces the material and installation costs. Description of the Drawings

[0017] Figure 1 is the external structure schematic diagram of the high-concentration waste water stirring and evaporation device;

[0018] Figure 2 is the structure schematic diagram of the stirring shaft, sleeve and blades;

[0019] Figure 3 It is a schematic diagram of the installation structure of the blade;

[0020] The labels in the attached drawings are:

[0021] 1. Tank body; 11. Waste water inlet; 12. Waste water outlet; 13. Exhaust port; 2. Stirring shaft; 21. Steam inlet; 22. Sleeve; 23. Installation hole; 24. Communication hole; 3. Blade; 31. Blade body; 32. Connecting pipe. Specific embodiments

[0022] The following will describe the specific embodiments of the present invention with reference to the attached drawings.

[0023] As Figure 1 and 2 shown, the present invention provides a high-concentration waste water stirring and evaporation device, including a tank body 1, a stirring shaft 2 and a plurality of blades 3.

[0024] The stirring shaft 2 penetrates through the tank body 1 and can rotate. A plurality of blades 3 are located inside the tank body 1, are all fixed on the stirring shaft 2, and rotate therewith. The stirring shaft 2 is hollow, and one end has a steam inlet 21. The blades 3 are hollow and communicate with the stirring shaft 2. The blades 3 have a plurality of air holes penetrating through their side walls. The steam entering the stirring shaft 2 first enters the blades 3, and then enters the tank body 1 through the air holes on the blades 3. The high-concentration waste water in the tank body 1 is stirred by the blades 3 and heated by the steam released from its inside, further concentrating its concentration. Among them, the shaft member structure that can rotate and ventilate is the prior art and will not be elaborated.

[0025] One end of the tank body 1 is provided with a waste water inlet 11, and the other end is provided with a waste water outlet 12. The waste water enters the tank body 1 through the waste water inlet 11 and is stirred and evaporated, and the concentrated waste water is discharged from the waste water outlet 12. The waste water inlet 11 is located above the stirring shaft 2, and the waste water outlet 12 is located below the stirring shaft 2, so that the waste water can be better treated.

[0026] The top of the tank body 1 is provided with an exhaust port 13 for discharging the waste gas generated during the stirring and evaporation process.

[0027] In a preferred embodiment, a plurality of blades 3 are arranged at uniform intervals in the radial direction of the stirring shaft 2 and are arranged in a spiral shape. The blade 3 includes a blade body 31 and a connecting pipe 32. The blade body 31 is a hollow structure in the shape of a rod. The air holes are opened on the side wall of the blade body 31. The blade body 31 is fixed at one end of the connecting pipe 32, and the other end of the connecting pipe 32 is fixed on the stirring shaft 2. The blade body 31 communicates with the stirring shaft 2 through the connecting pipe 32. The shape and arrangement of the blades 3 can better stir the viscous high-concentration waste water to ensure the stable operation of the device.

[0028] The stirring shaft 2 is equipped with a sleeve 22. The sleeve 22 is located inside the tank body 1 and is fixedly sleeved outside the stirring shaft 2. A number of mounting holes 23 corresponding to the blades 3 one by one are provided on the sleeve 22, and a number of corresponding communication holes 24 are provided on the stirring shaft 2. The end of the connecting pipe 32 of the blade 3 is detachably installed in the corresponding mounting hole 23 and is connected and communicated with the corresponding communication hole 24, so that the blade 3 is communicated with the stirring shaft 2. Specifically, the end of the connecting pipe 32 has an external thread, and the mounting hole 23 has an internal thread matching it, and the end of the connecting pipe 32 is threadedly connected to the mounting hole 23. By providing the sleeve 22, the blade 3 can be fixed and communicated with the stirring shaft 2 by means of threaded connection, which is convenient for the replacement, inspection and maintenance of the blade 3.

[0029] In a preferred embodiment, the side wall of the tank body 1 has a sandwich layer, and the sandwich layer is filled with a heat preservation layer formed by heat preservation cotton. The heat preservation cotton can specifically be glass fiber cotton, rock wool, pearl rock wool, ceramsite heat preservation cotton, etc., and the specific thickness and material are determined according to actual requirements. The material of the side wall of the tank body 1 is a heat insulation material. The heat preservation layer and the heat insulation material can prevent the loss of the temperature inside the tank body 1, thereby improving the heating efficiency of the wastewater.

[0030] The working process of the high-concentration wastewater stirring and evaporation device provided by the present utility model is as follows: The high-concentration wastewater is introduced into the tank body 1 from the wastewater inlet 11. Inside the tank body 1, the stirring shaft 2 drives the blade 3 to rotate to achieve the stirring function. At the same time, steam is passed through the stirring shaft 2, and the steam enters the blade 3 from the stirring shaft 2 and then is discharged to the inside of the tank body 1 from the air holes on the surface of the blade 3 to achieve the steam heating function. The high-concentration wastewater inside the tank body 1 is further concentrated under the action of stirring and steam heating. The waste gas generated during this process is discharged from the exhaust port 13 at the top of the tank body 1, and the concentrated wastewater is discharged from the wastewater outlet 12.

[0031] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "rear", etc. cited in the present utility model are only for the convenience of clear narration and are not used to limit the scope of implementation of the present utility model. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of implementation of the present utility model.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A high-concentration wastewater stirring and evaporation device, comprising a tank body (1), characterized in that: It further includes a stirring shaft (2) and a number of blades (3); The stirring shaft (2) penetrates through the tank body (1) and is capable of rotating; A number of blades (3) are located inside the tank body (1), are all fixed on the stirring shaft (2), and rotate therewith; The stirring shaft (2) is hollow, and one end has a steam inlet (21); The blades (3) are hollow and communicate with the stirring shaft (2); the blades (3) have a number of air holes penetrating through their side walls; A number of blades (3) are arranged at uniform intervals in the radial direction of the stirring shaft (2) and are arranged in a spiral shape; The blade (3) includes a blade body (31) and a connecting pipe (32); the blade body (31) is a hollow structure in the shape of a rod; the air holes are opened on the side wall of the blade body (31); the blade body (31) is fixed at one end of the connecting pipe (32), and the other end of the connecting pipe (32) is fixed on the stirring shaft (2), and the blade body (31) communicates with the stirring shaft (2) through the connecting pipe (32).

2. The high-concentration wastewater stirring and evaporation device according to claim 1, characterized in that: Among them, The stirring shaft (2) is equipped with a sleeve (22); The sleeve (22) is located inside the tank body (1) and is fixedly sleeved outside the stirring shaft (2); A number of mounting holes (23) corresponding to the blades (3) one by one are opened on the sleeve (22), and a number of corresponding communication holes (24) are opened on the stirring shaft (2); the end of the connecting pipe (32) of the blade (3) is detachably installed in the corresponding mounting hole (23) and is connected and communicated with the corresponding communication hole (24).

3. The high-concentration wastewater stirring and evaporation device according to claim 2, characterized in that: Among them, The end of the connecting pipe (32) has an external thread, and the mounting hole (23) has an internal thread matching it, and the end of the connecting pipe (32) is threadedly connected to the mounting hole (23).

4. The high-concentration wastewater stirring and evaporation device according to claim 1, characterized in that: Among them, The side wall of the tank body (1) has a sandwich layer, and the sandwich layer is filled with a heat-insulating layer formed by heat-insulating cotton.

5. The high-concentration wastewater stirring and evaporation device according to claim 1, characterized in that: Among them, The material of the side wall of the tank body (1) is a heat-insulating material.

6. The high-concentration wastewater stirring and evaporation device according to claim 1, characterized in that: Among them, One end of the tank body (1) is provided with a wastewater inlet (11), and the other end is provided with a wastewater outlet (12).

7. The high-concentration wastewater stirring and evaporation device according to claim 6, characterized in that: Among them, The wastewater inlet (11) is located above the stirring shaft (2), and the wastewater outlet (12) is located below the stirring shaft (2).

8. The high-concentration wastewater stirring and evaporation device according to claim 1, characterized in that: Among them, The top of the tank body (1) is provided with an exhaust port (13).

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