CN117259023A

CN117259023A - Mixing device and emulsification spray gun

Info

Publication number: CN117259023A
Application number: CN202311091010.6A
Authority: CN
Inventors: 欧阳虎; 李安迎; 周介凡
Original assignee: Hunan Zhong Gong Mining Engineering Technology Co ltd
Current assignee: Hunan Zhong Gong Mining Engineering Technology Co ltd
Priority date: 2023-08-28
Filing date: 2023-08-28
Publication date: 2023-12-22

Abstract

The utility model provides a mixing arrangement and emulsification spray gun, includes mixing arrangement, profit access valve and emulsification pipe, profit access valve is equipped with oil inlet and water inlet, the one end of emulsification pipe is the entrance point, and the other end is the exit end, the entrance point of emulsification pipe and the exit end intercommunication of oily water access valve, in the emulsification pipe, be covered with a plurality of end to end's mixing arrangement between exit end and entrance point, the shrink chamber of first mixing arrangement and the exit intercommunication of oily water access valve, the spiral channel export of former mixing arrangement and the shrink chamber intercommunication of latter mixing arrangement, the spiral channel export of last mixing arrangement and the exit intercommunication of emulsification pipe. The invention ensures that oil is fully dispersed in water in the form of finer tiny particles to form an emulsifying effect, and the oil medicament is fully dispersed in water for a longer time, thereby reducing the unit dosage of the oil medicament and lowering the production cost.

Description

Mixing device and emulsification spray gun

Technical Field

The invention relates to the field of mineral processing equipment, in particular to a mixing device and an emulsifying spray gun.

Background

In the field of mineral separation, in particular in flotation process flows, the dispersion of agents is of paramount importance. The existing medicament is directly discharged into a stirring barrel after the flow is controlled by a medicament adding machine, and the medicament is dispersed into ore pulp by fully stirring of the stirring barrel. However, lipid agents are difficult to disperse into small molecular groups in the conventional stirring equipment to be fully dispersed into ore pulp due to the characteristics of difficult water dissolution, easy coagulation and the like, so that the effectiveness of the agents is reduced and the mineral separation effect is affected.

In order to solve the problem, 1, the grease medicament is atomized through high-pressure air, so that the dispersing effect is achieved to a certain extent, but the dispersing time is limited, and agglomeration is still easy to occur. 2. The oil medicament is dispersed by adding the emulsifying agent, the medicament cost is increased although the effect is good, and the difficulty and cost of subsequent water treatment are increased to a certain extent due to the addition of new chemical medicaments.

Disclosure of Invention

The invention solves the defects of the prior art and provides a mixing device for improving the oil-water collision shearing effect and an emulsifying spray gun for realizing continuous and rapid mixing and dispersion of oil water to emulsification.

In order to achieve the above object, the present invention firstly proposes a mixing device, which comprises a mixing sleeve, wherein one end of the mixing sleeve is provided with a horn-shaped shrinkage cavity, the other end of the mixing sleeve is provided with a horn-shaped diffusion cavity, the shrinkage cavity is arranged opposite to one end with smaller inner diameter of the diffusion cavity and is communicated with the diffusion cavity through a throat pipe, one end with larger inner diameter of the shrinkage cavity is an inlet end, one end with larger inner diameter of the diffusion cavity is an outlet end,

the utility model discloses a mixing sleeve's diffusion chamber internal fixation has spiral dispersion sleeve, in the spiral dispersion sleeve, along spiral dispersion sleeve center pin as the rotation center be equipped with a plurality of spiral water conservancy diversion passageway, spiral dispersion sleeve's both ends are provided with spiral water conservancy diversion passageway's spiral passageway export and spiral passageway import respectively, mixing sleeve's exit end communicates with the external world through spiral water conservancy diversion passageway, spiral dispersion sleeve is equipped with the baffle of laying along the axial towards diffusion chamber one side, the baffle is with the exit segment of mixing sleeve diffusion chamber along the axial separate for a plurality of water conservancy diversion chambeies with spiral water conservancy diversion passageway quantity assorted, every water conservancy diversion intracavity all matches a spiral passageway import.

In this embodiment, a baffle is disposed in the baffle cavity, and the baffle is inclined or disposed with a certain radian, so that the baffle guides the mixed liquid from the mixing sleeve diffusion cavity to the spiral channel inlet.

In this embodiment, the inner diameter of the laryngeal tube is matched with the inner diameter of the smaller end of the inner diameter of the constricted cavity.

In this embodiment, the diffusion chamber of the mixing sleeve includes an inlet section and an outlet section, the inlet section is a horn, the outlet section is a straight cylinder, and the spiral dispersing sleeve is fixed in the outlet section.

By adopting the structure, the oil-water mixture can firstly pass through the contraction cavity of the mixing device, a contraction channel similar to a venturi tube is formed through the contraction cavity of the horn type, so that the flow speed of the oil-water mixture is increased, then the oil-water mixture passes through a small-diameter venturi tube, after extrusion collision is realized in the venturi tube, the oil-water mixture enters a diffusion cavity, the diameter of the diffusion cavity is reduced from small to large, so that the oil-water mixture is diffused, the flow speed is reduced, the oil and the water are forced to collide more severely, disperse and mix, the oil-water mixture is led into a spiral diversion channel through the diversion cavity on the outer wall of the spiral diversion sleeve, the oil-water mixture is dispersed into a plurality of liquid flows, and the oil-water mixture is collided and mixed again in the spiral diversion channel, so that the oil and the water are fully dispersed in the process of collision through repeated contraction acceleration, diffusion and deceleration.

The invention further comprises an emulsifying spray gun, wherein the mixing device is arranged in the emulsifying spray gun, the emulsifying spray gun further comprises an oil-water access valve and an emulsifying pipe, the oil-water access valve is provided with an oil inlet and a water inlet, one end of the emulsifying pipe is an inlet end, the other end of the emulsifying pipe is an outlet end, the inlet end of the emulsifying pipe is communicated with the outlet end of the oil-water access valve, a plurality of mixing devices which are connected end to end are distributed in the emulsifying pipe between the outlet end and the inlet end, a shrinkage cavity of the first mixing device is communicated with an outlet of the oil-water access valve, a spiral channel outlet of the first mixing device is communicated with a shrinkage cavity of the latter mixing device, and a spiral channel outlet of the last mixing device is communicated with an outlet of the emulsifying pipe.

By adopting the structure, the emulsification spray gun is connected in series by utilizing a plurality of mixing devices, so that an oil-water mixture is accelerated, diffused and decelerated, spirally split and collided and mixed through a plurality of mixing devices, oil and water are fully dispersed in the repeated process, emulsion is finally formed, the effect of emulsifying the oil in the water is achieved, finally, the emulsified oil-water mixture is sprayed out from the outlet end of the emulsification spray gun at a high speed, enters the ore pulp stirring barrel, is rapidly dispersed into ore pulp, and finishes dosing.

In the above embodiment, the oil-water access valve is provided with a regulating valve, an oil inlet cavity, an oil-water mixing cavity, an oil inlet and a water inlet, the regulating valve is arranged in the oil inlet cavity, an inlet of the oil inlet cavity is communicated with the oil inlet, an outlet of the oil inlet cavity is communicated with a first inlet of the oil-water mixing cavity, the regulating valve controls the flow rate of the oil inlet cavity entering the oil-water mixing cavity, and the water inlet is communicated with a second inlet of the oil-water mixing cavity.

In the above embodiment, the inner diameter of the emulsifying pipe is matched with the outer diameter of the mixing device, the inlet end of the emulsifying pipe is in threaded connection with the outlet end of the oil-water mixing cavity, the outlet end of the emulsifying pipe is provided with a discharging cavity, the discharging cavity is a horn with a large inlet and a small outlet, the outlet of the discharging cavity forms a nozzle, and a plurality of end-to-end mixing devices are distributed in the emulsifying pipe between the discharging cavity and the inlet end of the emulsifying pipe.

In the above embodiment, the emulsification device further comprises a discharge control valve, wherein the discharge control valve is arranged on the outlet end of the emulsification tube.

In the above embodiment, the discharge control valve comprises a valve body, a discharge channel, a plug and a spring, wherein an inlet is formed in one end of the valve body, an outlet is formed in the other end of the valve body, the discharge channel is formed in the valve body and between the outlet and the inlet, the plug comprises 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 discharge channel, the spring is sleeved outside the tail end of the plug, one end of the spring is fixedly connected with the tail end of the plug, the other end of the spring is fixedly arranged on the inner wall of the discharge channel, the inlet end of the valve body is threadedly mounted on the outlet end of the emulsifying pipe, and in an initial state, the head end of the plug is tightly pressed on the outlet end of the valve body by the elastic force of the spring to seal the outlet of the valve body.

By adopting the structure, the emulsified oil-water mixture sprayed from the spray nozzle can firstly enter a discharge channel of the discharge control valve, the pressure in the discharge channel is increased and is very fast greater than the spring pressure, so that the plug is pushed to be far away from the outlet of the valve body, and the outlet of the valve body is opened; when the machine is stopped or the dosing is not needed, only the inlet channels of high-pressure oil and high-pressure water are closed, at the moment, the plug does not have pressure, the plug presses the outlet of the valve body under the action of the spring, and the outlet of the valve body is sealed, so that ore pulp can be prevented from flowing backwards into the spray gun, the spray gun is effectively prevented from being blocked, and the slurry is effectively prevented from returning to a slurry returning pipeline, so that the next dosing can be favorably ensured to be normally started.

By adopting the structure, the invention has the following beneficial effects:

1. the mixing device of the device can realize repeated high-speed collision and shearing of water and oil phases and finally achieve the effect of rapid dispersion;

2. the emulsifying spray gun adopts a spray dosing mode, and oil and water are pressurized, and a mixing device is additionally arranged in a spray gun barrel, so that oil and water are continuously and rapidly mixed and dispersed to be emulsified.

In summary, by adopting the device, the oil is fully dispersed into the water in the form of finer tiny particles after being emulsified in the water, the specific surface area is greatly increased, and the oil medicament is fully dispersed in the water and is more durable under the condition that the emulsifier is not added, so that the oil medicament used for mineral separation is fully utilized, the unit dosage of the oil medicament is reduced, the production cost is reduced, and the device is more environment-friendly.

Drawings

FIG. 1 is a perspective view of the inlet end side of the mixing device of the present invention.

Fig. 2 is a perspective view of the outlet end side of the mixing device of the present invention.

Fig. 3 is a longitudinal cross-sectional view of the mixing device of the present invention.

Fig. 4 is a cross-sectional perspective view of fig. 3 A-A.

Fig. 5 is a perspective view of the emulsification spray gun of the present invention.

Fig. 6 is a cross-sectional view of an emulsion spray gun of the present invention.

In the drawing, 1, a mixing sleeve; 11. a shrink chamber; 12. a throat; 13. a diffusion chamber; 2. a spiral dispersing sleeve; 21. a spiral channel outlet; 22. a spiral channel inlet; 23. a deflector; 24. a diversion cavity; 25. a partition plate; 3. an oil inlet; 4. a water inlet; 5. an oil-water access valve; 51. a regulating valve; 52. an oil inlet cavity; 53. an oil-water mixing chamber; 6. an emulsifying tube; 61. a discharge cavity; 62. a nozzle; 7. a discharge control valve; 71. a plug; 72. a spring; 73. and a discharging channel.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.

Example 1:

referring to fig. 1-4, a mixing device comprises a mixing sleeve 1, wherein one end of the mixing sleeve 1 is provided with a horn-shaped shrinkage cavity 11, the other end is provided with a horn-shaped diffusion cavity 13, the shrinkage cavity 11 is arranged opposite to one end with smaller inner diameter of the diffusion cavity 13 and is connected with the end with larger inner diameter of the shrinkage cavity 11 through a venturi 12, one end with larger inner diameter of the diffusion cavity 13 is an inlet end, one end with larger inner diameter of the diffusion cavity 13 is an outlet end, the inner diameter of the venturi 12 is matched with the inner diameters of the shrinkage cavity 11 and one end with smaller inner diameter of the diffusion cavity 13,

the diffusion cavity 13 of the mixing sleeve 1 comprises an inlet section and an outlet section, the inlet section is a horn, the outlet section is a straight cylinder with the inner diameter matched with the inner diameter of the outlet end,

the spiral dispersing sleeve 2 is fixed in the outlet section, a plurality of spiral diversion channels are arranged in the spiral dispersing sleeve 2 along the central axis of the spiral dispersing sleeve 2 as a rotation center, each spiral diversion channel is provided with a spiral channel outlet 21 and a spiral channel inlet 22, one side of the spiral dispersing sleeve 2 facing the throat 12 is an inlet end, the other side of the spiral dispersing sleeve is an outlet end, the spiral channel inlet 22 is arranged at the inlet end of the spiral dispersing sleeve 2, the spiral channel outlet 21 is arranged at the outlet end of the spiral dispersing sleeve 2, the inlet end of the spiral dispersing sleeve 2 is provided with a baffle 25 which is axially distributed, the baffle 25 penetrates through the central axis of the spiral dispersing sleeve 2, the baffle 25 axially separates the outlet section of the mixing sleeve 1 diffusion cavity 13 into a plurality of diversion cavities 24 which are matched with the number of the spiral diversion channels, each diversion cavity 24 is internally provided with a spiral channel inlet 22, the diversion plate 23 is arranged in the diversion cavity 24, and the diversion plate 23 is inclined or is arranged with a certain radian, so that the diversion plate 23 guides mixed liquid from the mixing sleeve 1 into the spiral channel inlet 22 along the central axis of the spiral dispersing sleeve 2;

specifically, the baffle 23 faces the inlet section and has an included angle with the plane of the outlet of the inlet section, the baffle 23 is the bottom of the baffle cavity 24, one side of the baffle 23 is flush with the outlet of the inlet section, and the other side of the baffle is communicated with the spiral channel inlet 22, so that the baffle cavity 24 forms a chute with a shallow end near the inlet section and a deep end near the spiral channel inlet 22, and the mixed liquid from the inlet section is led into the spiral channel inlet 22.

Example 2:

as shown in fig. 5 and 6, the invention further comprises an emulsifying spray gun, the emulsifying spray gun comprises an oil-water access valve 5 and an emulsifying pipe 6, the oil-water access valve 5 is provided with a regulating valve 51, an oil inlet cavity 52, an oil-water mixing cavity 53, an oil inlet 3 and a water inlet 4, the regulating valve 51 is arranged in the oil inlet cavity 52, an inlet of the oil inlet cavity 52 is communicated with the oil inlet 3, an outlet of the oil inlet cavity 52 is communicated with a first inlet of the oil-water mixing cavity 53, the regulating valve 51 controls the flow of the oil inlet cavity 52 entering the oil-water mixing cavity 53, and the water inlet 4 is communicated with a second inlet of the oil-water mixing cavity 53; specifically, the adjusting valve 51 is installed in the oil inlet cavity 52 in a threaded manner, one end of the adjusting valve 51 is arranged outside the oil-water access valve 5 to form a rotating end, the other end of the adjusting valve 51 is arranged at the outlet of the oil inlet cavity 52 to form a plug 71 end, and the gap between the plug 71 end and the outlet of the oil inlet cavity 52 is adjusted through rotating the adjusting valve 51, so that the adjustment of the oil inlet flow is realized;

the inner diameter of the emulsifying pipe 6 is matched with the outer diameter of the mixing device, the inlet end of the emulsifying pipe 6 is in threaded connection with the outlet end of the oil-water mixing cavity 53, the outlet end is provided with a discharging cavity 61, the discharging cavity 61 is a horn with a large inlet and a small outlet, the outlet of the discharging cavity 61 forms a nozzle 62, a plurality of mixing devices connected end to end are distributed in the emulsifying pipe 6 between the inlet of the discharging cavity 61 and the inlet end of the emulsifying pipe 6, the shrinkage cavity 11 of the first mixing device is communicated with the outlet of the oil-water mixing cavity 53, the spiral channel outlet 21 of the former mixing device is communicated with the shrinkage cavity 11 of the latter mixing device, and the spiral channel outlet 21 of the last mixing device is communicated with the inlet of the discharging cavity 61.

During operation, high-pressure water is connected into the water inlet 4, and meanwhile, high-pressure oil is connected into the oil inlet 3, and the size of an oil channel can be adjusted through an adjusting rod on the oil-water inlet valve 5, so that the size of oil inlet quantity can be adjusted.

The water and the oil flow into the oil-water mixing cavity 53 of the oil-water access valve 5 at high speed to form first collision to form a certain proportion of oil-water mixture, and then the oil-water mixture flows into the mixing device of the emulsifying pipe 6,

firstly, the oil-water mixture firstly passes through the contraction cavity 11 of the mixing device, a venturi-like contraction channel is formed through the horn-like contraction cavity 11, so that the flow speed of the oil-water mixture is increased, then the oil-water mixture passes through the small-diameter throat 12, after extrusion collision is realized in the throat 12, the oil-water mixture enters the diffusion cavity 13, the diameter of the diffusion cavity 13 is from small to large, so that the oil-water mixture is diffused, the flow speed is reduced, so that the oil and the water are forced to collide, disperse and mix more severely, and then pass through the diversion cavity 24 on the outer wall of the spiral dispersion sleeve 2 to be led into the spiral diversion channel, so that the oil-water mixture is dispersed into a plurality of liquid flows, collide and mix again in the spiral diversion channel, and then enter the next mixing device to circulate in sequence. Through the processes of multi-wheel shrinkage acceleration, diffusion deceleration, spiral diversion and collision mixing, oil and water are fully dispersed in the repeated process to finally form emulsion, the effect of emulsifying the oil in the water is achieved, and finally the emulsified oil-water mixture is accelerated from a horn-shaped discharging cavity 61 and then is sprayed out at a high speed through a nozzle 62, enters an ore pulp stirring barrel, is further rapidly dispersed into ore pulp, and finishes dosing. When the machine is stopped or medicine adding is not needed, only high-pressure oil and high-pressure water are needed to be closed.

Example 3:

the difference between this embodiment and embodiment 2 is that, still include a ejection of compact control valve 7, ejection of compact control valve 7 includes valve body, ejection of compact passageway 73, end cap 71 and spring 72, the one end of valve body is equipped with the import, the other end is equipped with the export, be equipped with ejection of compact passageway 73 in the valve body between export and import, end cap 71 includes head end and tail end, the head end of end cap 71 sets up in the valve body exit end outside and can seal the exit end of valve body, and the tail end of end cap 71 sets up in ejection of compact passageway 73, the tail end overcoat of end cap 71 is equipped with spring 72, the one end and the tail end fixed connection of end cap 71, the other end is fixed on ejection of compact passageway 73 inner wall, the entrance point screw thread of valve body is installed at the exit end of emulsification pipe 6.

With the above structure, the emulsified oil-water mixture sprayed from the nozzle 62 will first enter the discharge channel 73 of the discharge control valve 7, the pressure in the discharge channel 73 increases and is quickly greater than the pressure of the spring 72, so as to push the plug 71 away from the outlet of the valve body, thereby opening the outlet of the valve body; when the machine is stopped or the dosing is not needed, only the high-pressure oil and the high-pressure water enter channels, at the moment, the plug 71 has no pressure, the plug 71 presses the outlet of the valve body under the action of the spring 72, and the outlet of the valve body is sealed, so that ore pulp can be prevented from flowing backwards into the spray gun, the spray gun is effectively prevented from being blocked, and the slurry is effectively prevented from flowing back to the slurry returning pipeline, so that the next dosing can be guaranteed to be normally started.

The foregoing description of the preferred embodiments of the present invention should not be construed as limiting the scope of the invention, but rather utilizing equivalent structural changes made in the present invention description and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present invention.

Claims

1. A mixing device, characterized in that: comprises a mixing sleeve (1), wherein one end of the mixing sleeve (1) is provided with a horn-shaped shrinkage cavity (11), the other end of the mixing sleeve is provided with a horn-shaped diffusion cavity (13), the shrinkage cavity (11) is relatively arranged with one end with smaller inner diameter of the diffusion cavity (13) and is communicated with the other end through a throat (12), one end with larger inner diameter of the shrinkage cavity (11) is an inlet end, one end with larger inner diameter of the diffusion cavity (13) is an outlet end,

the utility model discloses a mixing sleeve (1) diffusion chamber (13) one end is installed spiral dispersion sleeve (2), in spiral dispersion sleeve (2), be equipped with a plurality of spiral water conservancy diversion passageway for rotation center along spiral dispersion sleeve (2) center pin, the both ends of spiral dispersion sleeve (2) are provided with spiral water conservancy diversion passageway's spiral passageway export (21) and spiral passageway import (22) respectively, the exit end of mixing sleeve (1) communicates with the external world through spiral water conservancy diversion passageway, spiral dispersion sleeve (2) are equipped with baffle (25) of laying along the axial towards diffusion chamber (13) one side, baffle (25) are with the exit section of mixing sleeve (1) diffusion chamber (13) along axial separation for a plurality of water conservancy diversion chambeies (24) with spiral water conservancy diversion passageway quantity assorted, all match in every water conservancy diversion chamber (24) have a spiral passageway import (22).

2. The mixing device of claim 1, wherein: the mixing device is characterized in that a guide plate (23) is arranged in the guide cavity (24), and the guide plate (23) is inclined or is provided with a certain radian, so that the guide plate (23) guides the mixed liquid into the spiral channel inlet (22) from the diffusion cavity (13) of the mixing sleeve (1).

3. The mixing device of claim 1, wherein: the inner diameter of the throat pipe (12) is matched with the inner diameter of the smaller end of the inner diameter of the shrinkage cavity (11).

4. The mixing device of claim 1, wherein: the diffusion cavity (13) of the mixing sleeve (1) comprises an inlet section and an outlet section, the inlet section is a horn, the outlet section is a straight cylinder, and the spiral dispersing sleeve (2) is fixed in the outlet section.

5. An emulsifying spray gun comprising a mixing device according to any one of claims 1 to 4, characterized in that: including profit access valve (5) and emulsion pipe (6), profit access valve (5) are equipped with oil inlet (3) and water inlet (4), the one end of emulsion pipe (6) is the entrance point, and the other end is the exit end, the entrance point of emulsion pipe (6) communicates with the exit end of profit access valve (5), in emulsion pipe (6), be covered with a plurality of end to end's mixing arrangement between exit end and entrance point, the shrink chamber (11) of first mixing arrangement communicates with the export of profit access valve (5), the spiral passageway export (21) of former mixing arrangement communicates with the shrink chamber (11) of latter mixing arrangement, the spiral passageway export (21) of last mixing arrangement communicates with the export of emulsion pipe (6).

6. The emulsification spray gun of claim 5 wherein: the oil-water access valve (5) is provided with a regulating valve (51), an oil inlet cavity (52), an oil-water mixing cavity (53), an oil inlet (3) and a water inlet (4), the regulating valve (51) is arranged in the oil inlet cavity (52), an inlet of the oil inlet cavity (52) is communicated with the oil inlet (3), an outlet of the oil inlet cavity is communicated with a first inlet of the oil-water mixing cavity (53), the regulating valve (51) controls the flow of the oil inlet cavity (52) entering the oil-water mixing cavity (53), and the water inlet (4) is communicated with a second inlet of the oil-water mixing cavity (53).

7. The emulsification spray gun of claim 6 wherein: the internal diameter of emulsion pipe (6) and mixing arrangement's external diameter phase-match, the entrance point threaded connection of emulsion pipe (6) is at the exit end of profit mixing chamber (53), the exit end of emulsion pipe (6) is equipped with ejection of compact chamber (61), ejection of compact chamber (61) are big, export little loudspeaker formula of export, the export of ejection of compact chamber (61) forms nozzle (62), in emulsion pipe (6), at ejection of compact chamber (61) to the mixing arrangement of emulsion pipe (6) entrance point between be covered with a plurality of end to end.

8. The emulsification spray gun of claim 7 wherein: the device also comprises a discharge control valve (7), wherein the discharge control valve (7) is arranged on the outlet end of the emulsifying pipe (6).

9. The emulsification spray gun of claim 8 wherein: the discharging control valve (7) comprises a valve body, a discharging channel (73), a plug (71) and a spring (72), wherein an inlet is formed in one end of the valve body, an outlet is formed in the other end of the valve body, the discharging channel (73) is formed in the valve body and 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 channel (73), the spring (72) is sleeved outside the tail end of the plug (71), one end of the spring (72) is fixedly connected with the tail end of the plug (71), the other end of the spring is fixed on the inner wall of the discharging channel (73), the inlet end of the valve body is installed on the outlet end of the emulsifying pipe (6) in a threaded mode, and in an initial state, the head end of the plug (71) is tightly pressed on the outlet end of the valve body by the spring (72).