A flocculant production mixing device

Abstract

The application discloses a flocculant production mixing device, which comprises a mixing tank body, a plurality of raw material liquid inlets are connected to the upper portion of the mixing tank body, a mixed liquid outlet is arranged at the bottom of the mixing tank body, the cavity of the mixing tank body is divided into a premixing cavity located at the upper portion and a mixing cavity located at the lower portion by a partition plate, the premixing cavity is communicated with the outside through a first ventilation pipeline, the mixing cavity is communicated with the outside through a second ventilation pipeline, and the premixing cavity and the mixing cavity are communicated with each other through a siphon pipeline; a mixing and stirring mechanism is arranged in the premixing cavity, a driving mechanism for driving the mixing and stirring mechanism to rotate is arranged on the mixing tank body, a sleeve with a reverse buckle is fixedly arranged in the premixing cavity, the sleeve is located above the mixing and stirring mechanism, the upper end portion of the siphon pipeline is located in the sleeve, and a shut-off valve is arranged on the siphon pipeline; a vortex mixer is arranged in the mixing cavity, and the lower end portion of the siphon pipeline is communicated with the vortex mixer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flocculant production, in particular to a flocculant production mixing device. BACKGROUND

[0002] Flocculants are important chemical agents in the field of water treatment, mainly used for removing suspended solids and colloids in water and improving water quality. Its mechanism of action is to neutralize some particles or particles with negative or positive electric properties in water with positive or negative electric properties and difficult to separate, reduce the electric potential of these particles or particles, make them in an unstable state, and use the flocculation properties of the flocculant to concentrate these particles, and separate them out by physical or chemical methods. Flocculant compounding refers to mixing two or more flocculants according to a certain proportion for use, so as to improve the flocculation effect and improve the water quality.

[0003] The stirring device is the core equipment in the flocculant compounding process. The current stirring device usually includes a stirring tank and a stirring assembly rotatingly arranged in the stirring tank. The stirring assembly usually includes a stirring shaft and a plurality of stirring blades fixedly arranged on the stirring shaft. The stirring shaft is driven by a motor to rotate rapidly, thereby realizing the mixing of multiple raw materials.

[0004] However, the above stirring device has certain defects. First, the stirring blades cannot be attached to the inner side wall of the stirring tank, so there will be certain "dead angles" in the stirring process. Second, the size of the stirring blades is too small, and the mixing effect is poor. When the size of the stirring blades is too large, the water resistance is large during stirring, so the load of the motor is too large. Third, bubbles are generated during the flocculant compounding process, and the bubbles will interfere with the uniform dispersion of the flocculant, resulting in uneven distribution of the flocculant. Especially in the mixing process of the flocculant and water or other solvents, the bubbles will affect the uniformity and reduce the flocculation effect.

[0005] In actual production process, the generation of bubbles is related to stirring speed and temperature. Therefore, the current method for controlling bubbles mainly controls the stirring speed, controls the temperature, and adds a defoaming agent. Therefore, the process parameters need to be obtained through multiple experiments before production, but in actual production, temporary adjustment cannot be performed. Adjustment of any one of the above parameters will have a more serious impact on the final product.

[0006] Therefore, those skilled in the art need to improve the existing stirring device to solve the above technical problems. SUMMARY

[0007] The main purpose of the present application is to provide a flocculant production mixing device which can be adjusted in time according to the generation of bubbles during production, thereby ensuring the product quality of the flocculant.

[0008] In order to achieve the above object, the first aspect, the application provides a flocculant production mixing device, which comprises a mixing tank body, a plurality of raw material inlet openings are connected to the upper portion of the mixing tank body, a mixed liquid outlet opening is arranged at the bottom of the mixing tank body, the cavity of the mixing tank body is divided into a premixing cavity located at the upper portion and a mixing cavity located at the lower portion by a partition plate, the premixing cavity is communicated with the outside through a first air pipe, the mixing cavity is communicated with the outside through a second air pipe, and the premixing cavity and the mixing cavity are communicated with each other through a siphon pipe.

[0009] A mixing and stirring mechanism is arranged in the premixing cavity, a driving mechanism for driving the rotation of the mixing and stirring mechanism is arranged on the mixing tank body, a reverse sleeve is fixedly arranged in the premixing cavity, the reverse sleeve is located above the mixing and stirring mechanism, the upper end portion of the siphon pipe is located in the reverse sleeve, and a shut-off valve is arranged on the siphon pipe.

[0010] A vortex mixer is arranged in the mixing cavity, and the lower end portion of the siphon pipe is communicated with the vortex mixer.

[0011] Optionally, the shut-off valve is a pneumatic diaphragm valve.

[0012] Optionally, the mixing and stirring mechanism comprises a rotating shaft arranged in rotation, a plurality of stirring blades fixedly arranged on the rotating shaft, the upper end portion of the rotating shaft is connected with the driving mechanism, and the lower end portion of the rotating shaft is rotatably connected with the partition plate through a rotating bearing.

[0013] Optionally, the driving mechanism is a driving motor fixedly arranged on the top of the mixing tank body, and the upper end portion of the rotating shaft is connected with the motor shaft of the driving motor through a shaft coupling.

[0014] Optionally, the reverse sleeve is detachably connected with the inner side wall of the mixing tank body.

[0015] Optionally, the inner side wall of the mixing tank body is fixedly provided with a mounting bracket, a dovetail connection groove is arranged on the mounting bracket, and the outer side wall of the reverse sleeve is provided with a dovetail connection part matched with the dovetail connection groove.

[0016] Optionally, baffles are arranged in the mixing cavity in a staggered manner along the up-down direction, and the vortex mixer is fixedly arranged on the uppermost baffle.

[0017] Optionally, the vortex mixer comprises an outer shell, and a blade arranged in rotation in the outer shell, a gradually changing outlet opening is arranged on one side of the outer shell, and an inlet opening connected with the lower end portion of the siphon pipe is arranged on the other side of the outer shell.

[0018] Optionally, the liquid flow in the siphon pipe is less than the inlet flow of the mixing tank body.

[0019] Optionally, the top of the siphon pipe is provided with a defoamer.

[0020] The flocculant production mixing device has the advantages that: firstly, the whole mixing process is divided into pre-mixing and mixing, and only the raw materials are pre-mixed in the pre-mixing process, so that the stirring mechanism does not need to operate at high speed, thereby reducing the motor load and the number of bubbles generated;

[0021] Secondly, the mixing liquid in the pre-mixing cavity is transported into the mixing cavity by the siphon pipe, so that the power device is not needed, and the small flow is accumulated into a pulse type large flow, thereby driving the blades in the vortex mixer to rotate rapidly to realize mixing.

[0022] Finally, the cut-off valve is arranged on the siphon pipe, when a large number of bubbles are found in the production process, only the opening degree of the cut-off valve needs to be adjusted, so that when the mixing liquid flows through the siphon pipe, the opening degree of the cut-off valve is equivalent to the reduction of the pipe diameter, thereby increasing the pressure, and the bubbles are dissolved in the mixing liquid by the pressurization, thereby reducing the number of bubbles without adjusting the process parameters set before production, in addition, the pressurization can further improve the rotating speed of the blades in the vortex mixer, and the mixing effect is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of this application, are used to provide further understanding of the application and to make apparent the other features and advantages of the application. The schematic embodiment drawings of the application and the description thereof are used to explain the application, and do not constitute an improper limitation on the application. In the drawings:

[0024] Figure 1 is a schematic diagram of the application;

[0025] Figure 2 is a sectional view of the application;

[0026] Figure 3 is a schematic diagram of the mounting frame;

[0027] Figure 4 is a schematic diagram of the baffle plate.

[0028] Wherein: 1, mixing tank body; 2, raw material liquid inlet; 3, mixing liquid liquid outlet; 4, pre-mixing cavity; 5, mixing cavity; 6, partition; 7, first air pipe; 8, second air pipe; 9, stirring shaft; 10, stirring blade; 11, driving motor; 12, sleeve; 13, siphon pipe; 14, cut-off valve; 15, vortex mixer; 16, baffle plate; 17, mounting frame; 18, defoamer. DETAILED DESCRIPTION

[0029] In the following, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort should fall within the protection scope of the present application.

[0030] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that comprises a series of steps or units does not necessarily limit to those clearly listed steps or units, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0031] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0032] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For a person of ordinary skill in the art, the specific meaning of these terms in the present application can be understood according to the specific situation.

[0033] In addition, the meaning of the term "a plurality of" should be two and more than two.

[0034] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0035] As Figures 1-2As shown, a flocculant production mixing device comprises a mixing tank body 1, a plurality of raw material liquid inlets 2 are connected to the upper portion of the mixing tank body 1, a mixed liquid outlet 3 is arranged at the bottom of the mixing tank body 1, the cavity of the mixing tank body 1 is divided into a premixing cavity 4 at the upper portion and a mixing cavity 5 at the lower portion by a partition plate 6, the premixing cavity 4 is communicated with the outside through a first air pipe 7, the mixing cavity 5 is communicated with the outside through a second air pipe 8, and the premixing cavity 4 and the mixing cavity 5 are communicated through a siphon pipe 13.

[0036] A mixing stirring mechanism is arranged in the premixing cavity 4, a driving mechanism for driving the mixing stirring mechanism to rotate is arranged on the mixing tank body 1, a reverse sleeve 12 is fixedly arranged in the premixing cavity 4, the reverse sleeve 12 is located above the mixing stirring mechanism, the upper end of the siphon pipe 13 is located in the reverse sleeve 12, and a shut-off valve 14 is arranged on the siphon pipe 13.

[0037] A vortex mixer 15 is arranged in the mixing cavity 5, and the lower end of the siphon pipe 13 is communicated with the vortex mixer 15.

[0038] The overall working process is as follows:

[0039] The raw material liquid enters the premixing cavity 4 through the raw material liquid inlet 2, the mixing stirring mechanism is used for mixing the raw material liquid to form a mixed liquid, as the liquid level of the mixed liquid gradually rises, when reaching the siphon point, siphoning is formed, that is, small flow is converted into pulse type large flow, and then the mixed liquid enters the vortex mixer 15 through the siphon pipe 13 to drive the blades to rotate rapidly, so that rapid mixing is realized, and finally the mixed liquid is discharged through the mixed liquid outlet 3; in the production process, when the operator finds that the number of bubbles increases, the opening degree of the shut-off valve 14 is adjusted, so that when the mixed liquid flows through the siphon pipe 13, the effect of the shut-off valve 14 is equivalent to reducing the pipe diameter, so that the pressure is increased, and the bubbles are dissolved in the mixed liquid through the pressurization, so that the number of bubbles is reduced, and the process parameters set before production do not need to be adjusted; in addition, the pressurization can further increase the rotating speed of the blades in the vortex mixer 15, and the mixing effect is further improved.

[0040] Preferably, the shut-off valve 14 is a pneumatic diaphragm valve in the embodiment.

[0041] The mixing stirring mechanism comprises a rotating shaft, a plurality of stirring blades 10 fixedly arranged on the rotating shaft, the upper end of the rotating shaft is connected with the driving mechanism, and the lower end of the rotating shaft is rotatably connected with the partition plate 6 through a rotating bearing.

[0042] In the embodiment, the driving mechanism is preferably a driving motor 11 fixedly arranged on the top of the mixing tank body 1, and the upper end of the rotating shaft is connected with the motor shaft of the driving motor 11 through a shaft coupling. When stirring, the driving motor 11 drives the stirring shaft 9 to rotate, thereby driving the stirring blades 10 to rotate, so as to realize the mixing of the liquid in the premixing cavity 4.

[0043] As shown in Figure 3 In order to maintain the sleeve 12, the sleeve 12 is detachably connected with the inner side wall of the mixing tank body 1. Preferably, the inner side wall of the mixing tank body 1 is fixedly provided with a mounting frame 17, the mounting frame 17 is provided with dovetail connection grooves, and the outer side wall of the sleeve 12 is provided with dovetail connecting portions matched with the dovetail connection grooves. It should be noted that the dovetail connection grooves on the mounting frame 17 are not open at both ends, but preferably the upper end is open and the lower end is closed. When mounting, the dovetail connecting portions on the sleeve 12 are inserted into the dovetail connection grooves from top to bottom.

[0044] As shown in Figure 4 In order to further mix the mixed liquid after rapid mixing by the vortex mixer 15 before it flows out of the mixing tank, baffles 16 are arranged in the mixing cavity 5 along the up-down direction. The vortex mixer 15 is fixedly arranged on the uppermost baffle 16, so that the mixed liquid can flow back along the baffles 16, thereby further improving the mixing effect. The shape of the baffles 16 matches the inner cavity of the mixing tank body 1. In the embodiment, the cross section of the inner cavity of the mixing tank body 1 is circular, so that the baffles 16 correspondingly have notched circular shape.

[0045] In the embodiment, the vortex mixer 15 includes an outer shell, and blades rotatingly arranged in the outer shell. One side of the outer shell is provided with a gradually changing liquid outlet, and the other side of the outer shell is provided with a liquid inlet connected with the lower end of the siphon pipe 13. The pulse type large flow mixed liquid entering the outer shell through siphoning can drive the blades to rotate rapidly, thereby realizing rapid mixing of the liquid.

[0046] In order to enable continuous and intermittent production, the liquid flow in the siphon pipe 13 is greater than the liquid inflow of the mixing tank body 1. When siphoning, siphoning only occurs when the liquid level reaches the siphoning point, that is, the small flow accumulation is converted into pulse type large flow.

[0047] In the embodiment, the top of the siphon pipe 13 is provided with a defoamer 18. The structure of the defoamer 18 is not the innovation of the present application and can be obtained by purchase. The purpose of the defoamer 18 is to eliminate the large air bubbles entering the siphon pipe 13. Although the low-speed motor is used to drive the stirring in the premixing chamber 4, the air bubbles are still generated. The low speed only reduces the number of air bubbles, and the air bubbles are divided into large-size air bubbles and small-size air bubbles. The large-size air bubbles are eliminated by the defoamer 18, and the small-size air bubbles are dissolved in the mixed liquid by adjusting the pressure through the cut-off valve 14 on the siphon pipe 13. Thus, the number of air bubbles is reduced, thereby improving the product quality. Most importantly, the process parameters obtained by the test before production do not need to be changed, and the use of the defoamer does not need to be increased. The actual working conditions in the production process can be adjusted in time.

[0048] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flocculant production mixing device, characterized in that: The system includes a mixing tank body, the upper part of which is connected to several raw material inlets, and the bottom of which is provided with a mixed liquid outlet. The cavity of the mixing tank body is divided into a premixing chamber located at the upper part and a mixing chamber located at the lower part by a partition. The premixing chamber is connected to the outside through a first vent pipe, and the mixing chamber is connected to the outside through a second vent pipe. The premixing chamber and the mixing chamber are connected by a siphon pipe. The premixing chamber is equipped with a mixing and stirring mechanism, and the mixing tank body is equipped with a driving mechanism for driving the mixing and stirring mechanism to rotate. An inverted sleeve is fixedly installed in the premixing chamber, the sleeve is located above the mixing and stirring mechanism, the upper end of the siphon pipe is located inside the sleeve, and a shut-off valve is installed on the siphon pipe. A vortex mixer is provided inside the mixing chamber, and the lower end of the siphon pipe is connected to the vortex mixer; The top of the siphon pipe is equipped with a defoamer. The premixing chamber is driven by a low-speed motor to stir. Large bubbles are eliminated by the defoamer, while small bubbles are dissolved in the mixed liquid by adjusting the pressure through the shut-off valve on the siphon pipe. The mixing chamber is provided with baffles arranged alternately in the vertical direction, and the vortex mixer is fixedly installed on the uppermost baffle. The vortex mixer includes an outer shell and blades rotatably disposed within the outer shell. A gradually deformed liquid outlet is provided on one side of the outer shell, and a liquid inlet connected to the lower end of the siphon pipe is provided on the other side of the outer shell.

2. The flocculant production mixing device as described in claim 1, characterized in that: The shut-off valve is a pneumatic diaphragm valve.

3. The flocculant production mixing device as described in claim 1, characterized in that: The mixing and stirring mechanism includes a rotating shaft and several stirring blades fixedly mounted on the rotating shaft. The upper end of the rotating shaft is connected to the driving mechanism, and the lower end of the rotating shaft is rotatably connected to the partition plate through a rotating bearing.

4. The flocculant production mixing device as described in claim 3, characterized in that: The driving mechanism is a drive motor fixedly installed on the top of the mixing tank body, and the upper end of the rotating shaft is connected to the motor shaft of the drive motor through a coupling.

5. The flocculant production mixing device as described in claim 1, characterized in that: The sleeve is detachably connected to the inner wall of the mixing tank body.

6. The flocculant production mixing device as described in claim 5, characterized in that: The inner wall of the mixing tank body is fixedly provided with a mounting bracket, and the mounting bracket is provided with a dovetail connecting groove. The outer wall of the sleeve is provided with a dovetail connecting part that mates with the dovetail connecting groove.

7. The flocculant production mixing device as described in claim 1, characterized in that: The liquid flow rate in the siphon pipe is greater than the liquid inlet flow rate of the mixing tank body.

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