CN102688819A - Gas-liquid mixed nozzle device - Google Patents

Abstract

The invention provides a gas-liquid mixed nozzle device comprising a base body having a first lateral side, a second lateral side and a third lateral side, a closed assembly, a throttle assembly and a nozzle from the first lateral side to the third lateral side. The base body comprises a gas channel and a liquid channel concavely arranged on the first lateral side as well as a liquid recessed part and a gas-liquid mixed recessed part respectively and concavely arranged on the second lateral side and the third lateral side; the liquid channel is from the first lateral side to the liquid recessed part; the gas channel and the liquid recessed part are respectively from the first lateral side and the second lateral side to the gas-liquid mixed recessed part, wherein the first portion of the liquid recessed part is communicated with the gas-liquid mixed recessed part; the closed assembly is arranged in an opening part of the liquid recessed part; the throttle assembly is protruded from the closed assembly into the first portion so as to reduce the cross section area; and the nozzle is engaged with the opening part of the gas-liquid recessed part.

Description

Gas-liquid mixed formula spray nozzle device

Technical field

The invention relates to a kind of spray nozzle device, and particularly relevant for a kind of gas-liquid mixed formula spray nozzle device with orifice union of the flow that reduces liquid entering gas-liquid mixed depressed part.

Background technology

In general spray nozzle device, its major function is to be used for wherein fluid is quickened, and make fluid to leave nozzle with fast speeds, and the fluid that is adopted in the nozzle can be gas or liquid.

In addition, in general spray nozzle device, include a pedestal usually,, and in its inside, provide fluid required runner, make the fluid that fluid provider provided to arrive nozzle via the runner in the pedestal in order to fixed nozzle.

Yet, when fluid that spray nozzle device adopted is liquid, owing to include a certain amount of impurity in the liquid, so, be easy to generate the situation of incrustation and then obstruction through after the use for a long time.Wherein, above-mentioned incrustation normally is deposited on the outlet of nozzle.So, need nozzle be pulled down and clean in order to solve stopping state.And because the inner space of nozzle is narrow and small, so promoted the difficulty of nozzle cleaning operation.

Summary of the invention

Therefore; The object of the invention is providing a kind of gas-liquid mixed formula spray nozzle device; It has can reduce the orifice union that liquid gets into the flow of gas-liquid mixed depressed part, thus can reduce the probability that the impurity in the liquid gets into the gas-liquid mixed depressed part, and then reduce the situation of the impurity plug nozzle in the liquid.

According to one embodiment of the invention, a kind of gas-liquid mixed formula spray nozzle device is provided.This gas-liquid mixed formula spray nozzle device comprises pedestal, closed component, orifice union and nozzle.Above-mentioned pedestal comprises first, second and third side, and pedestal also comprises the gas passage and the fluid passage that are arranged with in first side, is arranged with in the ccontaining liquid depressed part of second side and is arranged with the gas-liquid mixed depressed part in the 3rd side.Above-mentioned gas passage and fluid passage are respectively in order to transport gas and liquid; Ccontaining liquid depressed part then has first and the second portion that interconnects; Wherein second portion is adjacent to the second above-mentioned side; And the aforesaid liquid passage is to run through so far ccontaining liquid depressed part by first side, and this ccontaining liquid depressed part mainly is in order to ccontaining aforesaid liquid.In addition, above-mentioned gas passage and ccontaining liquid depressed part are through to the gas-liquid mixed depressed part by first side and second side respectively, and wherein ccontaining liquid depressed part is to be communicated with the gas-liquid mixed depressed part with above-mentioned first.Above-mentioned closed component is the peristome that is arranged in the second portion of ccontaining liquid depressed part, then is engaged in this closed component and protrudes in the first of above-mentioned ccontaining liquid depressed part as for orifice union, reduces the cross-sectional area of first whereby.Moreover said nozzle is the peristome that is engaged in the gas-liquid mixed depressed part, makes the inner space that liquid and gas in the gas-liquid mixed depressed part can get into nozzle.

The invention has the advantages that the impurity that utilizes orifice union to reduce in the liquid gets into the probability of gas-liquid mixed depressed part, and then to cause the incrustation that impurity produced in the liquid mainly be to be attached on the orifice union.Therefore, when running into the situation of obstruction, only must orifice union be pulled down to clean and get final product; Compared to washer jet; Because the structure of orifice union is comparatively simple, thus the program of gas-liquid mixed formula spray nozzle device cleaning maintenance can be reduced, and then save the great amount of time cost.

Description of drawings

In order preferable understanding to be arranged, please with reference to above-mentioned detailed description and cooperate corresponding accompanying drawing to viewpoint of the present invention.Be stressed that according to the standard normal of industry, the various characteristics in the accompanying drawing do not illustrate to scale.In fact, for clearly demonstrating the foregoing description, can at random amplify or dwindle the size of various characteristics.The relevant drawings description of contents is following.

Figure 1A and Figure 1B are the generalized sections that illustrates respectively according to the gas-liquid mixed formula spray nozzle device of one embodiment of the invention, and the generalized section that secant 1B-1B dissects in Figure 1A;

Fig. 2 A and Fig. 2 B are the generalized sections that illustrates gas-liquid mixed formula spray nozzle device according to another embodiment of the present invention respectively, and the generalized section that secant 2B-2B dissects in Fig. 2 A;

Fig. 3 illustrates according to a plurality of gas-liquid mixed formula spray nozzle devices of a comparative example of the present invention curve map corresponding to the discharge distributing homogeneity of different liquid total flow;

Fig. 4 to Fig. 6 illustrates respectively according to a plurality of gas-liquid mixed formula spray nozzle devices of a plurality of embodiment of the present invention curve map corresponding to the discharge distributing homogeneity of different liquid total flow.

[primary clustering symbol description]

100: gas-liquid mixed formula spray nozzle device 100a: gas-liquid mixed formula spray nozzle device

102: pedestal 102a: first side

102b: the second side 102c: the 3rd side

104: closed component 106: orifice union

108: nozzle 108a: inner space

110: orifice union 110a: end

110b: first passage 110c: second channel

200: gas passage 202: third part

202a: 204: the four parts in inclined plane

300: fluid passage 400: ccontaining liquid depressed part

402: the 402a of first: inclined plane

404: second portion 404a: peristome

500: gas-liquid mixed depressed part 500a: peristome

1B-1B: secant 2B-2B: secant

A: arrow B: arrow

The specific embodiment

Please with reference to Figure 1A, it is the generalized section that illustrates according to the gas-liquid mixed formula spray nozzle device of one embodiment of the invention.Gas-liquid mixed formula spray nozzle device 100 comprises pedestal 102, closed component 104, orifice union 106 and nozzle 108.In the present embodiment; Pedestal 102 comprises the first side 102a, the second side 102b and the 3rd side 102c, and wherein pedestal 102 is that essence is the cube of a rule, specifically; Each side of pedestal 102 is the plane, and its adjacent two side faces is all orthogonal.Yet in other embodiment, pedestal can have other geometry, and does not exceed with present embodiment, and for example pedestal can include arc-shaped curved surface.In addition, in order to provide suitable intensity with fixed nozzle 108, pedestal 102 can be selected the material of metal for use.And for fear of corrosion, pedestal 102 also can be selected for use like stainless material.

In the pedestal shown in Figure 1A 102, it goes back air inclusion passage 200, fluid passage 300, ccontaining liquid depressed part 400 and gas-liquid mixed depressed part 500.Above-mentioned gas passage 200 is the first side 102a that are arranged with in pedestal 102 with fluid passage 300, and wherein gas passage 200 is respectively in order to transport gas and liquid with fluid passage 300.In certain embodiments, gas passage 200 can utilize one or more pipelines respectively and be engaged to gas supply source and liquid source of supply with fluid passage 300, in order to gas and liquid are transferred to nozzle 108.In addition, gas passage 200 is made with fluid passage 300 any known modes capable of using, for example holes in the first side 102a of pedestal 102 with drill bit and makes gas passage 200 and fluid passage 300.

And ccontaining liquid depressed part 400 is the second side 102b that are arranged with in pedestal 102, and wherein ccontaining liquid depressed part 400 has the first 402 and second portion 404 that shown in Figure 1A, interconnects.Wherein, above-mentioned second portion 404 is to be adjacent to the second side 102b, and first 402 is then comparatively away from the second side 102b.In addition, aforesaid liquid passage 300 runs through so far ccontaining liquid depressed part 400 by the first side 102a of pedestal 102.In particular, fluid passage 300 is the second portions 404 that are through to ccontaining liquid depressed part 400 by the first side 102a.Yet in other embodiments, fluid passage 300 also can be through to the first 402 of ccontaining liquid depressed part 400 by the first side 102a.In the embodiment shown in Figure 1A, ccontaining liquid depressed part 400 mainly is the liquid that is provided by fluid passage 300 in order to ccontaining.In certain embodiments, any known mode such as ccontaining liquid depressed part 400 above-mentioned as boring capable of using is made.

As for above-mentioned gas-liquid mixed depressed part 500, it is the 3rd side 102c that is arranged with in pedestal 102.And above-mentioned gas passage 200 runs through gas-liquid mixed depressed part 500 so far by the first side 102a and the second side 102b of pedestal 102 respectively with ccontaining liquid depressed part 400, and wherein ccontaining liquid depressed part 400 is with first 402 gas-liquid mixed depressed part 500 connections therewith.In the embodiment shown in Figure 1A, after the liquid that comes from the gas of gas passage 200 and come from fluid passage 300 mixes in this gas-liquid mixed depressed part 500 fully, get into again in the nozzle 108.

And above-mentioned closed component 104, it is the peristome 404a that is arranged in the second portion 404 of above-mentioned ccontaining liquid depressed part 400.Wherein, the setting of closed component 104 mainly is in order conveniently to clean the incrustation that is piled up on the orifice union 106.In certain embodiments, closed component 104 can be through the mode that is spirally connected or fixes, and is arranged at the peristome 404a in the second portion 404 of ccontaining liquid depressed part 400.But the set-up mode of above-mentioned closed component 104 (be spirally connected or fix) technical field for this reason has common knowledge the knowledgeable and knows, so do not do further explanation in this.

In the embodiment shown in Figure 1A, orifice union 106 is to be engaged on the closed component 104, and wherein orifice union 106 more protrudes in the first 402 of ccontaining liquid depressed part 400, so as to reducing the cross-sectional area of this first 402.In addition, please in the lump with reference to Figure 1A and Figure 1B, wherein Figure 1B illustrates the generalized section that secant 1B-1B dissects in Figure 1A.In this embodiment; Orifice union 106 is a column; And the wall of the first 402 of this column and ccontaining liquid depressed part 400 forms the runner shown in Figure 1B, and the liquid that is placed in the ccontaining liquid depressed part 400 then gets into gas-liquid mixed depressed part 500 through runner thus.In the present embodiment, orifice union 106 is to be engaged in closed component 104 with welding manner.Yet in certain embodiments, above-mentioned orifice union 106 can be engaged in closed component 104 through mode of being spirally connected or fixing mode.

As for the nozzle among the embodiment shown in Figure 1A 108; It is the peristome 500a that is engaged in gas-liquid mixed depressed part 500; That is be engaged in the 3rd side 102c of pedestal 102, make the inner space 108a that liquid and gas in the gas-liquid mixed depressed part 500 can enter to nozzle 108 whereby.

In addition, in the embodiment shown in Figure 1A, the first 402 of ccontaining liquid depressed part 400 also comprises inclined plane 402a, and wherein this inclined plane 402a makes the aperture of first 402 along direction (shown in the arrow A) convergent away from second portion 404.Moreover gas passage 200 has more third part 202 and the 4th part 204, and wherein the 4th part 204 is adjacent to the first side 102a of above-mentioned pedestal 102, and gas passage 200 then is communicated with gas-liquid mixed depressed part 500 with third part 202.The third part 202 of above-mentioned gas passage 200 also comprises inclined plane 202a, and this inclined plane 202a makes the aperture of third part 202 along direction (shown in the arrow B) convergent away from the 4th part 204.Wherein, The main purpose of the setting of above-mentioned inclined plane 402a and inclined plane 202a is the gas of the third part 202 of the liquid of the first 402 in the ccontaining liquid depressed part 400 of flowing through and gas coming through passage 200 is quickened, and makes that whereby the liquid that gets in the gas-liquid mixed depressed part 500 can mix with gas more quickly.

Please with reference to Fig. 2 A and Fig. 2 B, it is the generalized section that illustrates gas-liquid mixed formula spray nozzle device according to another embodiment of the present invention respectively, and the generalized section that secant 2B-2B dissects in Fig. 2 A.In the embodiment of Fig. 2 A and Fig. 2 B; The variation of each structure and the relativeness between each structure among the gas-liquid mixed formula spray nozzle device 100a; All be similar to the variation of each structure in the gas-liquid mixed formula spray nozzle device 100 shown in Figure 1A and Figure 1B and the relativeness between each structure; So no longer give unnecessary details, below only explain with regard to the difference part in this.

In gas-liquid mixed formula spray nozzle device 100a, be to replace with orifice union 110 that essence is the orifice union 106 of a column in the gas-liquid mixed formula spray nozzle device 100.This orifice union 110 is a throttle pipe, and wherein this throttle pipe has end 110a, first passage 110b and second channel 110c.Above-mentioned first passage 110b is arranged with the 110a in the end, and second channel 110c then is arranged with the side in this throttle pipe, and this first passage 110b and second channel 110c formation one runner shown in 2A figure.In addition; The side of above-mentioned throttle pipe contacts with the wall of the first 402 of ccontaining liquid depressed part 400; So form the cross-section structure shown in Fig. 2 B, make the liquid that comes from the ccontaining liquid depressed part 400 get in the gas-liquid mixed depressed part 500 whereby by first passage 110b.More particularly; The liquid that is placed in the ccontaining liquid depressed part 400 is to get into first passage 110b via second channel 110c earlier; Then get into gas-liquid mixed depressed part 500, that is the liquid in the ccontaining liquid depressed part 400 is to get into gas-liquid mixed depressed part 500 via first passage 110b and the formed runner of second channel 110c via first passage 110b.

In addition; A plurality of above-mentioned gas-liquid mixed formula spray nozzle devices 100 or gas-liquid mixed formula spray nozzle device 100a are done arranged vertical; And these gas-liquid mixed formula spray nozzle devices 100 or gas-liquid mixed formula spray nozzle device 100a are connected in parallel to same gas supply source and same liquid source of supply; The fluid flow that can effectively suppress hydrostatic pressure difference and caused distributes uneven phenomenon, and principle explanation wherein as follows.

Consider the situation of liquid through a small-bore runner (the small-bore runner that the first 402 shown in Figure 1A and Fig. 2 A engages with gas-liquid mixed depressed part 500), liquid is represented as follows with mathematical expression through the conservation of energy before and after this small-bore runner:

$U+\frac{P}{\mathrm{\ρ}}+\frac{{\stackrel{\‾}{V}}^2}{2\mathrm{\β}}+\mathrm{gz}+M+Q=\mathrm{Cons}\tan t$ .............................(1)

Wherein U is interior ability;

can for pressure;

is kinetic energy; Gz is a potential energy; And M is system's (being the small-bore runner) work done, and Q is the heat input, and Constant is a constant.

Said system is simplified, do not considered the interior loss of energy that wherein potential energy, system's work done, heat input and frictional force cause, then above (1) formula can be simplified as follows:

$\frac{P}{\mathrm{\&rho;}}+\frac{{\stackrel{\&OverBar;}{V}}^2}{2\mathrm{\&beta;}}=\mathrm{Cons}\mathrm{Tan}t$ Or $\frac{{\mathrm{<figure-callout\; id="0"\; label="P"\; filenames="HSA00000461114000032.png,HSA00000461114000042.png"\; state="\{\{state\}\}">P</figure-callout>}}_0}{\mathrm{\&rho;}}+\frac{{{\stackrel{\&OverBar;}{V}}_0}^2}{2\mathrm{\&beta;}}=\frac{P_i}{\mathrm{\&rho;}}+\frac{{{\stackrel{\&OverBar;}{V}}_i}^2}{2\mathrm{\&beta;}}$ ... ... ... ... ... .. (2)

Make Δ P=P ₀-P _i, and suppose that fluid gets into the sectional area that runner preceding cross section of fluid channel in above-mentioned small-bore amasss the runner much larger than the small-bore, also can suppose

So above (2) formula can be simplified as follows:

${{\stackrel{\&OverBar;}{V}}_i}^2=\frac{2\mathrm{\&beta;}}{\mathrm{\&rho;}}\mathrm{\&Delta;P}$ .............................(3)

In addition;

wherein Q is fluid flow, and A is the sectional area of small-bore runner.Therefore, (3) formula can be adjusted as follows more than:

$\frac{{{\stackrel{\&OverBar;}{Q}}_i}^2}{{{\stackrel{\&OverBar;}{A}}_i}^2}=\frac{2\mathrm{\&beta;}}{\mathrm{\&rho;}}\mathrm{\&Delta;P}$ ..............................(4)

Can know according to above (4) formula, when the sectional area of small-bore runner more hour, system needs big more pressure differential Δ P to keep identical flow.In addition; When the sectional area of small-bore runner more hour, the changes in flow rate

that pressure differential Δ P change is caused is also more little.

According to above-described principle; When as previously discussed; When a plurality of gas-liquid mixed formula spray nozzle devices 100 or gas-liquid mixed formula spray nozzle device 100a are done arranged vertical; The cross-sectional area that orifice union 106 that can be through wherein or orifice union 110 dwindle first 402 reduces the flow variation that hydrostatic pressure difference causes between a plurality of gas-liquid mixed formula spray nozzle devices 100 or gas-liquid mixed formula spray nozzle device 100a.Therefore, can the entire system flow distribution variation that a plurality of gas-liquid mixed formula spray nozzle devices 100 or gas-liquid mixed formula spray nozzle device 100a are formed be controlled at acceptable scope.

Compare with next embodiment and comparative example, the effect that is produced after above-mentioned principle is used more specifically is described whereby with reality.

Comparative example

At first; With twelve earthly branches gas-liquid mixed formula spray nozzle device arranged vertical; And number; And the level configurations of this twelve earthly branches gas-liquid mixed formula spray nozzle device with and pairing hydrostatic pressure difference be shown in following table one, wherein height and hydrostatic pressure difference are benchmark to number 12 gas-liquid mixed formula spray nozzle device all.

Table one

In this comparative example; Gas-liquid mixed formula structure of nozzle is to be similar to structure shown in Figure 1A and Figure 1B; Difference wherein is that it does not comprise orifice union 106, and wherein the aperture of the small-bore runner that engages with gas-liquid mixed depressed part 500 of the first shown in Figure 1A 402 is 6.6mm.

This twelve earthly branches gas-liquid mixed formula nozzle is connected in parallel to same gas supply source and same liquid source of supply; Then this twelve earthly branches gas-liquid mixed formula nozzle is imposed six kinds of different liquid total flows, wherein the liquid total flow is respectively 25 liters of/minute (l/min), 37l/min, 50l/min, 75l/min, 100l/min and 125l/min.In the time of will imposing the different liquids total flow, the discharge that each gas-liquid mixed formula spray nozzle device is corresponding writes down like Fig. 3.

Can know according to Fig. 3, more little the closer to the discharge of the gas-liquid mixed formula spray nozzle device of top.In addition, when total flow was low more, a plurality of gas-liquid mixed formula spray nozzle devices relative different each other were also big more.Moreover, when total flow descends most 25l/min and 37l/min, there are four and two gas-liquid mixed formula spray nozzle devices can't spray liquid respectively.

Embodiment one

In embodiment one, the related experiment condition that is adopted is all identical with above-mentioned comparative example, and difference wherein is that the gas-liquid mixed formula spray nozzle device of embodiment one adopts the structure shown in Figure 1A and Figure 1B, that is includes orifice union 106.In addition, orifice union 106 is a column, and the diameter of this column is 5mm.

Experimental result is recorded among Fig. 4.Can know that according to Fig. 4 the discharge distributing homogeneity of a plurality of gas-liquid mixed formula spray nozzle devices obviously is superior to the above-mentioned comparative example that does not install orifice union 106 additional.Yet, when total flow drops to 25l/min, still have two gas-liquid mixed formula spray nozzle devices can't spray liquid.

Embodiment two

In embodiment two; The related experiment condition that is adopted is all identical with above-mentioned comparative example; Difference wherein is that the gas-liquid mixed formula spray nozzle device of embodiment two adopts the structure shown in Fig. 2 A and Fig. 2 B, that is includes orifice union 110; This orifice union 110 is throttle pipes, and the aperture of the first passage 110b of this throttle pipe is 4mm.

Experimental result is recorded among Fig. 5.Can know that according to Fig. 4 and Fig. 5 the discharge distributing homogeneity of wherein a plurality of gas-liquid mixed formula spray nozzle devices is similar to the discharge distributing homogeneity of the foregoing description one.

Embodiment three

In embodiment three; The related experiment condition that is adopted is all identical with above-mentioned comparative example; Difference wherein is that the gas-liquid mixed formula spray nozzle device of embodiment three adopts the structure shown in Fig. 2 A and Fig. 2 B, that is includes orifice union 110; This orifice union 110 is throttle pipes, and the aperture of the first passage 110b of this throttle pipe is 3mm.

Experimental result is recorded among Fig. 6.Can know that according to Fig. 4, Fig. 5 and Fig. 6 compared to the discharge distributing homogeneity of Fig. 4 and a plurality of gas-liquid mixed formula spray nozzle devices shown in Figure 5, the discharge distributing homogeneity of embodiment three obtains lifting further.Even when total flow drops to 25l/min, the gas-liquid mixed formula spray nozzle device that is positioned at top numbering 1 and 2 still can spray liquid.

Though the present invention discloses as above with embodiment; Right its is not in order to limit the present invention; Anyly be familiar with this art; Do not breaking away from the spirit and scope of the present invention, when can doing various changes and retouching, so protection scope of the present invention is as the criterion when looking the scope that appending claims defines.

Claims (7)

1. a gas-liquid mixed formula spray nozzle device is characterized in that, comprises:

One pedestal comprises one first side, one second side and one the 3rd side, and wherein this pedestal also comprises:

One gas passage is arranged with in this first side, in order to transmit a gas;

One fluid passage is arranged with in this first side, in order to transmit a liquid;

One ccontaining liquid depressed part; Be arranged with in this second side; Wherein this ccontaining liquid depressed part has a first and a second portion that interconnects; This second portion is adjacent to this second side, and this fluid passage is through to this ccontaining liquid depressed part by this first side, and this ccontaining liquid depressed part is in order to ccontaining this liquid; And

One gas-liquid mixed depressed part; Be arranged with in the 3rd side; Wherein this gas passage is through to this gas-liquid mixed depressed part by this first side and this second side respectively with this ccontaining liquid depressed part, and this ccontaining liquid depressed part is to be communicated with this gas-liquid mixed depressed part with this first;

One closed component is arranged at the peristome in this second portion of this ccontaining liquid depressed part;

One orifice union is engaged in this closed component, and wherein this orifice union protrudes in this first of this ccontaining liquid depressed part to reduce the cross-sectional area of this first; And

One nozzle is engaged in the peristome of this gas-liquid mixed depressed part, makes the inner space that this liquid and this gas in this gas-liquid mixed depressed part can get into this nozzle.

2. gas-liquid mixed formula spray nozzle device according to claim 1; It is characterized in that; This orifice union is a column; This column forms a runner with the wall of this first of this ccontaining liquid depressed part, and this liquid that is placed in this ccontaining liquid depressed part is to get into this gas-liquid mixed depressed part via this runner.

3. gas-liquid mixed formula spray nozzle device according to claim 1; It is characterized in that this orifice union is a throttle pipe, this throttle pipe has an end, a first passage and a second channel; This first passage is arranged with in this end; This second channel is arranged with the side in this throttle pipe, and this first passage and this second channel form a runner, and the side of this throttle pipe contacts with the wall of this first of this ccontaining liquid depressed part;

This liquid that wherein is placed in this ccontaining liquid depressed part is to get into this gas-liquid mixed depressed part via this runner.

4. gas-liquid mixed formula spray nozzle device according to claim 1 is characterized in that, this orifice union is to be engaged in this closed component with the mode that is selected from a group that is made up of welding manner, the mode that is spirally connected and fixing mode.

5. gas-liquid mixed formula spray nozzle device according to claim 1 is characterized in that, this closed component is the peristome that is arranged at the mode that is selected from a group that is made up of mode of being spirally connected and fixing mode in this second portion of this ccontaining liquid depressed part.

6. gas-liquid mixed formula spray nozzle device according to claim 1 is characterized in that this first of this ccontaining liquid depressed part also comprises an inclined plane, and this inclined plane makes the aperture of this first along the direction convergent away from this second portion.

7. gas-liquid mixed formula spray nozzle device according to claim 1; It is characterized in that; This gas passage also has a third part and one the 4th part, and the 4th part is adjacent to this first side, and this gas passage is to be communicated with this gas-liquid mixed depressed part with this third part;

Wherein this third part also comprises an inclined plane, and this inclined plane makes the aperture of this third part along away from this tetrameric direction convergent.

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