Mixing device and emulsification lance

Abstract

The application discloses a mixing device and an emulsification spray gun, which comprise a mixing device, an oil-water access valve and an emulsification pipe, the oil-water access valve is provided with an oil inlet and a water inlet, one end of the emulsification pipe is an inlet end, the other end is an outlet end, the inlet end of the emulsification pipe is communicated with the outlet end of the oil-water access valve, a plurality of mixing devices connected in sequence are arranged in the emulsification pipe between the outlet end and the inlet end, the contraction cavity of the first mixing device is communicated with the outlet of the oil-water access valve, the outlet of the spiral channel of the previous mixing device is communicated with the contraction cavity of the following mixing device, and the outlet of the spiral channel of the last mixing device is communicated with the outlet of the emulsification pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mineral processing equipment, in particular to a mixing device and an emulsification spray gun. BACKGROUND

[0002] In the field of ore dressing, especially in the flotation process, the dispersion of reagents is crucial. The existing reagent adding and dispersion mainly controls the flow through the reagent feeder and then directly discharges the reagent into the stirring barrel. The reagent is dispersed into the ore slurry through sufficient stirring of the stirring barrel. However, due to the characteristics of fat reagents, such as difficult to dissolve in water and easy to condense, the effect is not ideal when using this dispersion method. In the existing stirring equipment, it is difficult to disperse into small molecules and fully disperse into the ore slurry, which reduces the effectiveness of the reagent and affects the ore dressing effect.

[0003] In order to solve this problem, the prior art 1, through high-pressure air, the oil reagent is atomized, which plays a role in dispersion to a certain extent, but the dispersion time is limited, and the reunion still occurs easily. 2, the way of adding emulsifying agent is used to help the dispersion of oil reagent, the effect is good, but the cost of reagent is increased, and due to the addition of new chemical reagent, the difficulty and cost of subsequent water treatment are also increased to a certain extent. SUMMARY

[0004] The present application solves the problems of the prior art and provides a mixing device for improving the oil-water collision and shearing effect, and an emulsification spray gun for realizing continuous and rapid mixing and dispersion of oil and water to achieve emulsification.

[0005] To achieve the above-mentioned purpose, the present application first proposes a mixing device, which comprises a mixing sleeve, one end of the mixing sleeve is provided with a converging cavity in the shape of a horn, the other end is provided with a diverging cavity in the shape of a horn, the converging cavity and the diverging cavity are oppositely arranged at the smaller end of the inner diameter and are connected by a throat, the larger end of the converging cavity is the inlet end, and the larger end of the diverging cavity is the outlet end,

[0006] A spiral dispersion sleeve is fixed in the diverging cavity of the mixing sleeve, a plurality of spiral flow guide channels are arranged in the spiral dispersion sleeve along the center axis of the spiral dispersion sleeve as the rotation center, the two ends of the spiral dispersion sleeve are respectively provided with a spiral channel outlet and a spiral channel inlet of the spiral flow guide channel, the outlet end of the mixing sleeve is connected with the outside through the spiral flow guide channel, and the spiral dispersion sleeve is provided with a partition plate arranged along the axial direction on the side facing the diverging cavity, the partition plate divides the outlet section of the diverging cavity of the mixing sleeve into a plurality of flow guide cavities matched with the number of spiral flow guide channels along the axial direction, and each flow guide cavity is matched with a spiral channel inlet.

[0007] In the embodiment, a flow guide plate is arranged in the flow guide cavity, and the flow guide plate is inclined or provided with a certain curvature, so that the flow guide plate guides the mixed liquid from the diverging cavity of the mixing sleeve into the spiral channel inlet.

[0008] In the embodiment, the inner diameter of the throat is matched with the inner diameter of the smaller end of the inner diameter of the contraction cavity.

[0009] In the embodiment, the diffusion cavity of the mixing sleeve includes an inlet section and an outlet section, the inlet section is of a horn type, the outlet section is of a straight cylinder type, and the spiral dispersion sleeve is fixed in the outlet section.

[0010] With the above structure, the oil-water mixture first passes through the contraction cavity of the mixing device, forms a contraction passage similar to a Venturi tube through the horn-type contraction cavity, so that the flow rate of the oil-water mixture increases, then the oil-water mixture passes through the small-diameter throat, after being squeezed and collided in the throat, enters the diffusion cavity, and the diameter of the diffusion cavity increases from small to large, so that the oil-water mixture diffuses and the flow rate decreases, thereby forcing the oil and water to collide, disperse and mix more violently, and then passing through the flow guide cavity on the outer wall of the spiral dispersion sleeve and being introduced into the spiral flow guide passage, the oil-water mixture is dispersed into multiple streams, and collides and mixes again in the spiral flow guide passage. Through the processes of multiple contraction and acceleration, diffusion and deceleration, spiral flow splitting and collision and mixing, the oil and water are fully dispersed in the process.

[0011] The application also includes an emulsifying spray gun, which is provided with the above mixing device, and further includes an oil-water access valve and an emulsifying tube, the oil-water access valve is provided with an oil inlet and a water inlet, one end of the emulsifying tube is an inlet end, and the other end is an outlet end, the inlet end of the emulsifying tube is in communication with the outlet end of the oil-water access valve, multiple mixing devices connected head to tail are arranged in the emulsifying tube between the outlet end and the inlet end, the contraction cavity of the first mixing device is in communication with the outlet of the oil-water access valve, the outlet of the spiral passage of the previous mixing device is in communication with the contraction cavity of the next mixing device, and the outlet of the spiral passage of the last mixing device is in communication with the outlet of the emulsifying tube.

[0012] With the above structure, the emulsifying spray gun utilizes multiple mixing devices in series, so that the oil-water mixture passes through multiple rounds of contraction and acceleration, diffusion and deceleration, spiral flow splitting and collision and mixing, so that the oil and water are fully dispersed in the repeated process and finally form an emulsion, achieving the effect of emulsifying the oil in water. Finally, the emulsified oil-water mixture is sprayed out of the outlet end of the emulsifying spray gun at high speed, enters the ore slurry mixing barrel, and then rapidly disperses into the ore slurry to complete the dosing.

[0013] In the above embodiment, the oil-water access valve is provided with an adjusting valve, an oil inlet cavity, an oil-water mixing cavity, an oil inlet and a water inlet, the adjusting valve is arranged in the oil inlet cavity, the inlet of the oil inlet cavity is in communication with the oil inlet, and the outlet is in communication with the first inlet of the oil-water mixing cavity, the adjusting valve controls the flow rate of the oil inlet cavity into the oil-water mixing cavity, and the water inlet is in communication with the second inlet of the oil-water mixing cavity.

[0014] In the above embodiment, the inner diameter of the emulsifying tube matches the outer diameter of the mixing device, the inlet end of the emulsifying tube is threadedly connected to the outlet end of the oil-water mixing cavity, the outlet end of the emulsifying tube is provided with a discharging cavity, the discharging cavity is a horn type with a large inlet and a small outlet, the outlet of the discharging cavity forms a nozzle, and the emulsifying tube is filled with a plurality of mixing devices connected end to end between the discharging cavity and the inlet end of the emulsifying tube.

[0015] In the above embodiment, a discharging control valve is further included, which is installed on the outlet end of the emulsifying tube.

[0016] In the above embodiment, the discharging control valve includes a valve body, a discharging passage, a plug and a spring, one end of the valve body is provided with an inlet, the other end is provided with an outlet, the valve body is provided with a discharging passage between the outlet and the inlet, the plug includes a head end and a tail end, the head end of the plug is arranged outside the outlet end of the valve body and can seal the outlet end of the valve body, the tail end of the plug is arranged in the discharging passage, the tail end of the plug is sleeved with the spring, one end of the spring is fixedly connected with the tail end of the plug, and the other end is fixedly connected to the inner wall of the discharging passage, and the inlet end of the valve body is threadedly installed on the outlet end of the emulsifying tube, in the initial state, the spring force of the spring presses the head end of the plug against the outlet end of the valve body to seal the outlet of the valve body.

[0017] With the above structure, the emulsified oil-water mixture sprayed from the nozzle first enters the discharging passage of the discharging control valve, the pressure in the discharging passage increases and soon exceeds the spring pressure, thereby pushing the plug away from the outlet of the valve body to open the outlet of the valve body; when stopping or not needing to add medicine, only the inlet passages of high-pressure oil and high-pressure water need to be closed, at this time, the plug has no pressure, and the plug is pressed against the outlet of the valve body under the action of the spring to seal the outlet of the valve body, thereby preventing the backflow of the ore slurry into the spray gun, effectively preventing the spray gun from being blocked and the backflow of the slurry to the dosing pipeline, and favorably ensuring the normal opening of the next dosing.

[0018] With the above structure, the present application has the following beneficial effects:

[0019] 1. The mixing device of the present application can realize multiple high-speed collisions, shearing and rapid dispersion of water and oil phases.

[0020] 2. The emulsifying spray gun of the present application adopts a spraying dosing mode, pressurizes oil and water, and continuously and rapidly mixes and disperses oil and water in the mixing device added in the spray gun tube to achieve emulsification.

[0021] In summary, the oil is emulsified in water and dispersed in water in the form of tiny particles, the specific surface area is increased, the oil-based medicament is dispersed more fully and lasts longer in water without increasing the amount of emulsifier, the oil-based medicament for ore dressing is used more fully, the unit dosage of the oil-based medicament is reduced, the production cost is reduced, and the environment is protected. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective view of the inlet end side of the mixing device of the present application.

[0023] Figure 2 It is a perspective view of the outlet end side of the mixing device of the present application.

[0024] Figure 3 It is a longitudinal sectional view of the mixing device of the present application.

[0025] Figure 4 It is Figure 3 It is a sectional perspective view at A-A.

[0026] Figure 5 It is a perspective view of the emulsification spray gun of the present application.

[0027] Figure 6 It is a sectional view of the emulsification spray gun of the present application.

[0028] In the drawings, 1 is a mixing sleeve, 11 is a contraction cavity, 12 is a throat, 13 is a diffusion cavity, 2 is a spiral dispersion sleeve, 21 is a spiral channel outlet, 22 is a spiral channel inlet, 23 is a guide plate, 24 is a guide cavity, 25 is a partition plate, 3 is an oil inlet, 4 is a water inlet, 5 is an oil-water inlet valve, 51 is an adjusting valve, 52 is an oil inlet cavity, 53 is an oil-water mixing cavity, 6 is an emulsification tube, 61 is a discharge cavity, 62 is a nozzle, 7 is a discharge control valve, 71 is a plug, 72 is a spring, and 73 is a discharge channel. DETAILED DESCRIPTION

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

[0030] In addition, the technical solutions in the embodiments of the present application can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize the combination. When the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0031] Embodiment 1

[0032] Please refer to Figures 1-4 A mixing device comprising a mixing sleeve 1, one end of the mixing sleeve 1 is provided with a converging cavity 11 in the shape of a trumpet, the other end is provided with a diverging cavity 13 in the shape of a trumpet, the converging cavity 11 is arranged opposite to the end with smaller inner diameter of the diverging cavity 13 and is connected by a throat pipe 12, the end with larger inner diameter of the converging cavity 11 is the inlet end, the end with larger inner diameter of the diverging cavity 13 is the outlet end, the inner diameter of the throat pipe 12 matches the inner diameter of the end with smaller inner diameter of the converging cavity 11 and the diverging cavity 13,

[0033] The diverging cavity 13 of the mixing sleeve 1 comprises an inlet section and an outlet section, the inlet section is in the shape of a trumpet, the outlet section is in the shape of a straight cylinder with inner diameter matching the inner diameter of the outlet end,

[0034] A spiral dispersion sleeve 2 is fixed in the outlet section, a plurality of spiral flow guide channels are arranged in the spiral dispersion sleeve 2 along the center axis of the spiral dispersion sleeve 2 as the center of rotation, the spiral flow guide channels are in the shape of a spiral, each spiral flow guide channel is provided with a spiral channel outlet 21 and a spiral channel inlet 22, the spiral dispersion sleeve 2 is provided with an inlet end facing the throat pipe 12 and an outlet end, the spiral channel inlet 22 is arranged at the inlet end of the spiral dispersion sleeve 2, the spiral channel outlet 21 is arranged at the outlet end of the spiral dispersion sleeve 2, the inlet end of the spiral dispersion sleeve 2 is provided with a partition plate 25 arranged in the axial direction, the partition plate 25 passes through the center axis of the spiral dispersion sleeve 2, the partition plate 25 divides the outlet section of the diverging cavity 13 of the mixing sleeve 1 into a plurality of flow guide cavities 24 in the axial direction, the number of which matches the number of the spiral flow guide channels, each flow guide cavity 24 is matched with a spiral channel inlet 22, a flow guide plate 23 is arranged in the flow guide cavity 24, the flow guide plate 23 is inclined or provided with a certain arc, so that the flow guide plate 23 guides the mixed liquid from the inlet section of the diverging cavity 13 of the mixing sleeve 1 into the spiral channel inlet 22;

[0035] Specifically, the flow guide plate 23 faces the inlet section and is arranged at an angle with the plane where the outlet of the inlet section is located, the flow guide plate 23 is the bottom of the flow guide cavity 24, one side of the flow guide plate 23 is flush with the outlet of the inlet section, the other side is in communication with the spiral channel inlet 22, so that the flow guide cavity 24 forms an inclined chute shallow at one end close to the inlet section and deep at the other end close to the spiral channel inlet 22, thereby guiding the mixed liquid from the inlet section into the spiral channel inlet 22.

[0036] Embodiment 2

[0037] As Figure 5 , 6As shown, the present application also includes an emulsification spray gun, which comprises an oil-water access valve 5 and an emulsification tube 6. The oil-water access valve 5 is provided with an adjusting valve 51, an oil inlet cavity 52, an oil-water mixing cavity 53, an oil inlet 3 and a water inlet 4. The adjusting valve 51 is arranged in the oil inlet cavity 52. The inlet of the oil inlet cavity 52 is communicated with the oil inlet 3, and the outlet is communicated with the first inlet of the oil-water mixing cavity 53. The adjusting valve 51 controls the flow of the oil inlet cavity 52 into the oil-water mixing cavity 53. The water inlet 4 is communicated with the second inlet of the oil-water mixing cavity 53. Specifically, the adjusting valve 51 is threadedly installed in the oil inlet cavity 52. One end of the adjusting valve 51 is arranged outside the oil-water access valve 5 to form a rotating end, and the other end is arranged at the outlet of the oil inlet cavity 52 as a plug 71 end. By rotating the adjusting valve 51, the gap between the plug 71 end and the outlet of the oil inlet cavity 52 is adjusted to realize the adjustment of the oil inlet flow.

[0038] The inner diameter of the emulsification tube 6 matches the outer diameter of the mixing device. The inlet end of the emulsification tube 6 is threadedly connected to the outlet end of the oil-water mixing cavity 53. The outlet end is provided with a discharge cavity 61. The discharge cavity 61 is a horn type with a large inlet and a small outlet. The outlet of the discharge cavity 61 forms a spray nozzle 62. The emulsification tube 6 is filled with a plurality of mixing devices connected head to tail between the inlet of the discharge cavity 61 and the inlet end of the emulsification tube 6. The contraction cavity 11 of the first mixing device is communicated with the outlet of the oil-water mixing cavity 53. The outlet 21 of the spiral channel of the previous mixing device is communicated with the contraction cavity 11 of the next mixing device. The outlet 21 of the spiral channel of the last mixing device is communicated with the inlet of the discharge cavity 61.

[0039] In operation, high-pressure water is first connected to the water inlet 4, and high-pressure oil is connected to the oil inlet 3. The adjusting rod on the oil-water access valve 5 can adjust the size of the oil passage, so as to adjust the size of the oil inlet.

[0040] The water and oil flow at high speed and collide for the first time in the oil-water mixing cavity 53 of the oil-water access valve 5 to form a certain proportion of oil-water mixture. Then the oil-water mixture flows into the mixing device in the emulsification tube 6,

[0041] Firstly, the oil-water mixture will pass through the contraction cavity 11 of the mixing device, and the contraction cavity 11 forms a contraction channel similar to a Venturi tube, so that the flow rate of the oil-water mixture is increased, and then the oil-water mixture passes through the small-diameter throat 12, and after the extrusion collision in the throat 12, enters the diffusion cavity 13, the diameter of the diffusion cavity 13 increases from small to large, so that the oil-water mixture is diffused and the flow rate is reduced, thereby forcing the oil and water to collide, disperse and mix more violently, and then the oil-water mixture is guided into the spiral guide channel through the guide cavity 24 on the outer wall of the spiral dispersion sleeve 2, so that the oil-water mixture is dispersed into multiple liquid streams, and then collides and mixes in the spiral guide channel, and then enters the next mixing device, and circulates in turn. Through the process of multiple rounds of contraction and acceleration, diffusion and deceleration, spiral distribution, collision and mixing, the oil and water are fully dispersed in this repeated process and finally form an emulsion, achieving the effect of emulsifying the oil in the water, and finally the emulsified oil-water mixture is accelerated through the horn-shaped discharge cavity 61 and then sprayed at high speed through the nozzle 62, enters the ore pulp stirring barrel, and then rapidly disperses into the ore pulp to complete the dosing. When stopping or not needing to dose, only the high-pressure oil and high-pressure water need to be closed.

[0042] Embodiment 3

[0043] The difference between this embodiment and embodiment 2 is that an outlet control valve 7 is further included, the outlet control valve 7 includes a valve body, an outlet passage 73, a plug 71 and a spring 72, one end of the valve body is provided with an inlet, the other end is provided with an outlet, the outlet passage 73 is arranged in the valve body between the outlet and the inlet, the plug 71 includes a head end and a tail end, the head end of the plug 71 is arranged outside the outlet end of the valve body and can seal the outlet end of the valve body, the tail end of the plug 71 is arranged in the outlet passage 73, the tail end of the plug 71 is sleeved with the spring 72, one end of the spring 72 is fixedly connected with the tail end of the plug 71, and the other end is fixedly connected with the inner wall of the outlet passage 73, and the inlet end of the valve body is threadedly installed at the outlet end of the emulsifying pipe 6.

[0044] With the above structure, the emulsified oil-water mixture sprayed from the nozzle 62 will first enter the outlet passage 73 of the outlet control valve 7, the pressure in the outlet passage 73 increases and soon exceeds the pressure of the spring 72, thereby pushing the plug 71 away from the outlet of the valve body, so as to open the outlet of the valve body; when stopping or not needing to dose, only the inlet passages of the high-pressure oil and the high-pressure water need to be closed, at this time, the plug 71 is no longer under pressure, and the plug 71 is pressed against the outlet of the valve body under the action of the spring 72, thereby sealing the outlet of the valve body, so as to prevent the ore pulp from flowing back into the spray gun, effectively prevent the spray gun from being blocked and the ore pulp from returning to the dosing pipeline, and beneficially ensure the normal opening of the next dosing.

[0045] The above merely illustrates the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structural transformation, direct / indirect application in other related technical fields, or the like, which are made under the concept of the present application, and based on the content of the present application specification and drawings, are included in the patent protection scope of the present application.

Claims

1. An emulsification lance characterized in that: The device comprises a mixing device, an oil-water access valve (5) and an emulsification tube (6), the mixing device comprises a mixing sleeve (1), one end of the mixing sleeve (1) is provided with a trumpet-shaped contraction cavity (11), the other end is provided with a trumpet-shaped diffusion cavity (13), the contraction cavity (11) is opposite to the end with smaller inner diameter of the diffusion cavity (13) and is communicated through a throat pipe (12), the inner diameter of the throat pipe (12) matches the inner diameter of the smaller end of the contraction cavity (11), the larger end of the contraction cavity (11) is the inlet end, and the larger end of the diffusion cavity (13) is the outlet end, one end of the diffusion cavity (13) of the mixing sleeve (1) is provided with a spiral dispersion sleeve (2), a plurality of spiral flow guide channels are arranged in the spiral dispersion sleeve (2) and take the center axis of the spiral dispersion sleeve (2) as the rotation center, the two ends of the spiral dispersion sleeve (2) are respectively provided with a spiral channel outlet (21) and a spiral channel inlet (22) of the spiral flow guide channels, the outlet end of the mixing sleeve (1) is communicated with the outside through the spiral flow guide channels, the spiral dispersion sleeve (2) is provided with a partition plate (25) arranged in the axial direction on the side facing the diffusion cavity (13), the partition plate (25) divides the outlet section of the diffusion cavity (13) of the mixing sleeve (1) into a plurality of flow guide cavities (24) matched with the number of the spiral flow guide channels in the axial direction, and each flow guide cavity (24) is matched with one spiral channel inlet (22); the diffusion cavity (13) of the mixing sleeve (1) comprises an inlet section and an outlet section, the inlet section is trumpet-shaped, and the outlet section is straight-cylindrical, and the spiral dispersion sleeve (2) is fixed in the outlet section; the oil-water access valve (5) is provided with an oil inlet (3) and a water inlet (4), one end of the emulsification tube (6) is the inlet end, and the other end is the outlet end, the inlet end of the emulsification tube (6) is communicated with the outlet end of the oil-water access valve (5), the inner diameter of the emulsification tube (6) matches the outer diameter of the mixing device, a plurality of mixing devices are arranged in the emulsification tube (6) between the outlet end and the inlet end, the contraction cavity (11) of the first mixing device is communicated with the outlet of the oil-water access valve (5), the spiral channel outlet (21) of the previous mixing device is communicated with the contraction cavity (11) of the next mixing device, and the spiral channel outlet (21) of the last mixing device is communicated with the outlet of the emulsification tube (6); a discharge control valve (7) is further arranged on the outlet end of the emulsification tube (6).

2. The emulsification lance according to claim 1, characterized in that: the oil-water access valve (5) is provided with an adjusting valve (51), an oil inlet cavity (52), an oil-water mixing cavity (53), an oil inlet (3) and a water inlet (4), the adjusting valve (51) is arranged in the oil inlet cavity (52), the inlet of the oil inlet cavity (52) is communicated with the oil inlet (3), and the outlet is communicated with the first inlet of the oil-water mixing cavity (53), the adjusting valve (51) controls the flow of the oil inlet cavity (52) into the oil-water mixing cavity (53), and the water inlet (4) is communicated with the second inlet of the oil-water mixing cavity (53).

3. The emulsification lance according to claim 2, characterized in that: The inlet end of the emulsifying tube (6) is threadedly connected to the outlet end of the oil-water mixing cavity (53), the outlet end of the emulsifying tube (6) is provided with a discharging cavity (61), the discharging cavity (61) is a horn type with a large inlet and a small outlet, the outlet of the discharging cavity (61) forms a nozzle (62), and the emulsifying tube (6) is filled with a plurality of mixing devices connected in series between the discharging cavity (61) and the inlet end of the emulsifying tube (6).

4. The emulsification lance of claim 1, wherein: The discharging control valve (7) comprises a valve body, a discharging passage (73), a plug (71) and a spring (72), one end of the valve body is provided with an inlet, the other end is provided with an outlet, the valve body is provided with the discharging passage (73) between the outlet and the inlet, the plug (71) comprises a head end and a tail end, the head end of the plug (71) is arranged outside the outlet end of the valve body and can seal the outlet end of the valve body, the tail end of the plug (71) is arranged in the discharging passage (73), the tail end of the plug (71) is sleeved with the spring (72), one end of the spring (72) is fixedly connected with the tail end of the plug (71), the other end is fixedly connected to the inner wall of the discharging passage (73), and the inlet end of the valve body is threadedly installed on the outlet end of the emulsifying tube (6). In the initial state, the spring (72) presses the head end of the plug (71) against the outlet end of the valve body to seal the outlet of the valve body.

5. The emulsification lance of claim 1, wherein: The flow guide cavity (24) is provided with a flow guide plate (23), and the flow guide plate (23) is inclined or provided with a certain arc, so that the flow guide plate (23) guides the mixed liquid from the diffusion cavity (13) of the mixing sleeve (1) into the inlet (22) of the spiral channel.

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