CN210752140U

CN210752140U - Mixer capable of adjusting foam liquid proportion

Info

Publication number: CN210752140U
Application number: CN201921557006.3U
Authority: CN
Inventors: 李亚飞; 黄斌; 赵芮; 蔡姚杰
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-06-16
Anticipated expiration: 2029-09-18

Abstract

The utility model discloses a mixer capable of adjusting the proportion of foam liquid, which comprises a mixing pipe, a first pipeline, a second pipeline, a hydraulic film actuator, a control valve, a bracket and an upper end adjusting module; the upper end adjusting module, the hydraulic film actuator, the bracket, the control valve and the mixing pipe are sequentially connected from top to bottom; the hydraulic membrane actuator comprises an actuator upper shell, an actuator lower shell, a rubber membrane, a membrane pressing sleeve, a membrane lower support, an actuator stepped rod, a packing screw sleeve, a pressing sleeve nut and a packing box; the upper end adjusting module comprises a fixed flange, a flange end cover, a valve cover, an adjusting spring, a guide sleeve, an adjusting spring upper support, an adjusting spring lower support, an adjusting screw and a locking nut; the utility model discloses a design of the film executor that surges can effectively solve the problem of foam liquid mixing ratio, makes mixing ratio range control at 3% ~ 6%, has very high reliability and bigger foam liquid reserves.

Description

Mixer capable of adjusting foam liquid proportion

Technical Field

The utility model relates to a blender technical field, more specifically the theory that says so especially relates to a blender of adjustable foam liquid proportion.

Background

The foam concentrate proportioner is a core device and a key component in a foam fire extinguishing system, and is a foaming device which mixes concentrated foam concentrate stored in a foam concentrate storage tank and flowing water connected into a device according to a required certain proportion to form foam fire-extinguishing liquid with ideal fire extinguishing performance. The method aims to continuously produce the mixed foam liquid which meets the regulation, and can be applied to the fields of fire-fighting foam fire-extinguishing operation and fire prevention, and the working performance of the foam fire-extinguishing system is directly related to the success or failure of the fire suppression of the foam fire-extinguishing system. The foam fire extinguishing system has the advantages of reliable installation, economy, practicality, high fire extinguishing efficiency and the like, has outstanding advantages for extinguishing class B fire, and is a basic extinguishing mode for oil fires at home and abroad at present.

The most critical measure of the performance of a foam proportioner is the mix ratio of foam and water. The existing foam proportioner has the defects of unstable working mixing ratio, large pressure loss, over 6 percent mixing ratio range and the like, and has low reliability and insufficient foam liquid storage capacity.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the current foam proportion mixer work mixing ratio is unstable, loss of pressure is great, the mixing ratio scope is low in the reliability that leads to more than 6%, the foam liquid reserves are not enough, an adjustable foam liquid proportion's mixer has been proposed, the stability of work mixing ratio has not only been promoted by a wide margin, pressure loss has been reduced, and can effectively solve the problem of mixed liquid proportion, make the mixing ratio control at 3% ~ 6%, the foam proportion mixer of comparing the positive pressure type has higher reliability, bigger foam liquid reserves.

The utility model discloses a following technical scheme realizes above-mentioned purpose: a mixer capable of adjusting the proportion of foam liquid comprises a mixing pipe, a first pipeline, a second pipeline, a hydraulic membrane actuator, a control valve, a bracket and an upper end adjusting module; the upper end adjusting module, the hydraulic film actuator, the bracket, the control valve and the mixing pipe are sequentially connected from top to bottom;

the mixing pipe is horizontally arranged, one end of the mixing pipe is a water inlet of fire-fighting water, and the other end of the mixing pipe is a liquid outlet of mixed liquid; the upper end of one side of the mixing pipe, which is close to the water inlet of the fire-fighting water, is provided with a water outlet, and the upper end of the middle part of the mixing pipe is provided with a foam liquid inlet pipe;

the control valve comprises a valve body, a valve seat, a valve rod, a valve clack and a middle partition layer, wherein an upper valve cavity and a lower valve cavity are arranged in the valve body and are separated by the middle partition layer which is connected with the valve body into a whole, the lower valve cavity and the lower valve cavity are sealed with each other, and the valve seat is arranged on the middle partition layer of the valve body; the lower end of the valve rod is arranged in the lower valve cavity, the valve clack is arranged at the lower end of the valve rod, the initial position of the valve clack is connected with the valve seat, the valve rod moves to drive the valve clack to move downwards, and at the moment, the upper valve cavity and the lower valve cavity are communicated with each other; the upper end of the valve rod sequentially penetrates through the valve, the valve seat, the upper valve cavity and the outer wall of the valve body and then is connected with the lower end of the actuating mechanism rod through a connecting block; the valve body is provided with a foam liquid inlet, a first foam liquid outlet and a second foam liquid outlet, the foam liquid inlet is communicated with the upper valve cavity, and the first foam liquid outlet and the second foam liquid outlet are communicated with the lower valve cavity; the foam liquid inlet is externally connected with a foam gear pump through a pipeline, and the first foam outlet is communicated with a foam liquid inlet pipe on the mixing pipe;

one end of the first pipeline is connected with a water outlet of the mixing pipe, and the other end of the first pipeline is connected with a water inlet on an actuator upper shell of the hydraulic membrane actuator; one end of the second pipeline is connected with a liquid inlet on the actuator lower shell of the hydraulic membrane actuator, and the other end of the second pipeline is connected with a second foam outlet on the valve body;

the hydraulic film actuator comprises an actuator upper shell, an actuator lower shell, a rubber film, a film pressing sleeve, a film lower support, an actuator step rod, a packing screw sleeve, a pressing sleeve nut and a packing box; the upper actuator shell is fixedly connected with the lower actuator shell through bolts, the step rods of the actuator comprise a first step rod, a second step rod and a third step rod, the diameters of the first step rod, the second step rod and the third step rod are sequentially increased from top to bottom, the compression nut, the film compression sleeve, the rubber film and the film lower support are sequentially sleeved on the second step rod from top to bottom, the upper end of the second step rod is provided with an external thread matched with the compression nut, the compression nut is screwed on the second step rod through the external thread, and the compression nut supports the upper end of the film compression sleeve on the second step rod; the edge of the rubber film is clamped by the upper actuator shell and the lower actuator shell, and an inner cavity formed by the upper actuator shell and the lower actuator shell is divided into an upper end cavity and a lower end cavity which are sealed with each other by the rubber film; a pressing sleeve nut and a packing threaded sleeve are sleeved on the third step rod, the pressing sleeve nut is sleeved on a packing box, the packing box is welded on the lower shell of the actuator, the packing threaded sleeve is sleeved inside the packing box, and the upper end of the packing threaded sleeve is tightly pressed against the lower end of the lower film support; the lower end of the execution mechanism stepped rod is connected with the upper end of a valve rod of the control valve through a connecting block, and the upper end of the execution mechanism stepped rod is connected with a guide sleeve of an upper end adjusting module;

the lower end of the bracket is provided with a flange base which is connected with the upper end of the valve body; the upper end of the bracket is connected with the lower end of the lower shell of the actuator;

the upper end adjusting module comprises a fixed flange, a flange end cover, a valve cover, an adjusting spring, a guide sleeve, an adjusting spring upper support, an adjusting spring lower support, an adjusting screw and a locking nut; the lower end of the fixed flange is welded on the upper shell of the actuator, the flange end cover is fixedly connected with the upper end of the fixed flange to form a sealed flange cavity, the guide sleeve is fixed on the lower shell of the actuator, the lower support of the adjusting spring is sleeved on the guide sleeve, and the upper end of the stepped rod of the actuating mechanism penetrates through the guide sleeve and is fixed on the lower support of the adjusting spring; the adjusting screw penetrates through the flange end cover, the upper end of the adjusting screw is connected with the locking nut, the lower end of the adjusting screw is fixedly connected with the adjusting spring upper support in the flange cavity, the upper end of the adjusting spring is connected to the adjusting spring upper support, and the lower end of the adjusting spring is connected to the adjusting spring lower support.

Furthermore, a valve stroke scale is fixed on the support.

Furthermore, the upper end adjusting module further comprises a valve cover, and the valve cover is sleeved on the outer sides of the locking nut and the adjusting screw and seals the locking nut and the adjusting screw.

Furthermore, a foam liquid inlet and a foam liquid first outlet of the control valve are respectively provided with a connecting flange, and the foam liquid inlet and the foam liquid first outlet of the control valve are respectively connected with a foam gear pump and a foam liquid inlet pipe of the mixing pipe through connecting flanges.

Furthermore, the water inlet end of the mixing pipe is provided with an inlet end flange plate, the liquid outlet end of the mixing pipe is provided with an outlet end flange plate, the foam liquid inlet pipe of the mixing pipe is provided with an upper end flange plate, the mixing pipe is connected with a water inlet pipeline through the inlet end flange plate, and the mixing pipe is connected with a water outlet pipeline through the outlet end flange plate.

Furthermore, the connecting block is provided with threaded cylinder chamber including connecting as an organic whole lower extreme connecting pipe and upper end connecting groove piece lower extreme connecting pipe, and the upper end of valve rod is through the screw-thread fit of external screw thread and cylinder chamber and screws in the lower extreme connecting pipe, is provided with T type groove on the upper end connecting groove piece, and actuating mechanism pole lower extreme is provided with the T type connecting block with T type groove matched with, and the actuating mechanism pole passes through T type connecting block inlay dress and realizes being connected of actuating mechanism pole and upper end connecting groove piece in T type groove.

The utility model discloses a concrete work flow as follows: the utility model adopts the working principle of a balanced foam liquid proportioner, a foam liquid inlet of a valve body is connected with a foam gear pump, foam stock solution enters an upper valve cavity of a control valve through the foam liquid inlet under the pressure action of the foam gear pump, pushes the valve clack in the control valve downwards and pushes the valve clack away, pressure drop is generated after the opening section of the valve clack, the foam stock solution flows into a lower valve cavity through the valve, at the moment, the foam stock solution is divided into two parts through the lower valve cavity, one part flows into a mixing pipe through a first foam liquid outlet, and the other part flows into a lower end cavity of a film actuator through a second foam liquid outlet and a second pipeline in a hydraulic mode; meanwhile, fire fighting water enters the mixing pipe from a water inlet of the mixing pipe, one part of the fire fighting water enters the upper end cavity of the hydraulic membrane actuator through a water outlet and the first pipeline, the other part of the fire fighting water is mixed with the foam stock solution flowing out from the first foam solution outlet on the control valve to form foam stock solution with a certain mixing ratio, and the foam stock solution is sent out from a liquid outlet of the mixing pipe; the mixing ratio of the mixed liquid at the liquid outlet is kept at 3-6% by volume.

The beneficial effects of the utility model reside in that:

1. the utility model discloses a design of the film executor that surges can effectively solve the problem of foam liquid mixing ratio, makes mixing ratio range control at 3% ~ 6%, has very high reliability and bigger foam liquid reserves.

2. The utility model discloses a set up valve stroke scale and top regulating spring on the support, can set for the balance ratio to obtain the mixed proportion of the foam liquid that needs, the regulation situation that valve stroke scale can be clear carries out the naked eye and observes.

3. The utility model discloses the up-and-down motion that utilizes the control valve rod realizes that the volume of the upper end cavity of the film executor that surges and lower extreme cavity is controllable to the ratio of foam and water in the upper end cavity and the lower extreme cavity of the film executor that realizes surging, and then realize the regulation of foam ratio.

4. The utility model discloses utilize the valve clack of valve rod bottom can prevent effectively that inside grease or fluid from outwards revealing.

5. The utility model discloses can reach the foam mixing ratio invariable according to the film executor that surges, the internal pressure in the automatically regulated executor, avoid water pressure fluctuation effectively, the unstable condition of the mixing ratio that causes.

6. The utility model discloses a pressure of the lower cavity of the membrane executor that surges is greater than the pressure of fire control pressure water all the time, has ensured that fire control pressure water does not flow into the valve body cavity of resorption, guarantees the stable work of whole mechanism.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the mixer with adjustable foam liquid ratio of the present invention.

Fig. 2 is a schematic diagram of a cross-sectional structure of a mixer capable of adjusting the ratio of foam liquid according to the present invention.

Fig. 3 is a schematic sectional structure diagram of the upper end adjusting module of the present invention.

Fig. 4 is a schematic sectional structural view of the hydraulic membrane actuator of the present invention.

Fig. 5 is a schematic structural diagram of the bracket of the present invention.

FIG. 6 is a schematic cross-sectional view of the control valve of the present invention

Fig. 7 is a schematic sectional structural view of the mixing tube of the present invention.

Fig. 8 is a schematic structural diagram of the connecting block of the present invention.

Fig. 9 is a schematic structural view of the step bar of the actuator of the present invention.

In the figure, 1-mixing pipe, 2-first pipeline, 3-second pipeline, 4-hydraulic film actuator, 5-control valve, 6-support, 7-upper end adjusting module, 11-inlet end flange, 12-outlet end flange, 13-upper end flange, 14-water outlet, 15-foam liquid inlet pipe, 41-actuator upper shell, 42-actuator lower shell, 43-rubber film, 44-film pressing sleeve, 45-film lower support, 46-actuator step rod, 47-packing screw sleeve, 48-pressing sleeve nut, 49-packing box, 410-pressing nut, 411-upper end cavity, 412-lower end cavity, 413-first step rod, 414-second step rod, 415-third step rod, 416-a connecting block, 51-a valve body, 52-a valve seat, 53-a valve rod, 54-a valve clack, 55-a middle interlayer, 56-an upper valve cavity, 57-a lower valve cavity, 58-a first foam liquid outlet, 59-a second foam liquid outlet, 510-a connecting flange, 61-a valve stroke scale, 62-a flange base, 71-a fixed flange, 72-a flange end cover, 73-a valve cover, 74-an adjusting spring, 75-a guide sleeve, 76-an adjusting spring lower support, 77-an adjusting spring upper support, 78-an adjusting screw and 79-a locking nut.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 to 9, a mixer capable of adjusting the proportion of foam liquid comprises a mixing pipe 1, a first pipeline 2, a second pipeline 3, a hydraulic membrane actuator 4, a control valve 5, a bracket 6 and an upper end adjusting module 7; the upper end adjusting module 7, the hydraulic membrane executor 4, the bracket 6, the control valve 5 and the mixing pipe 1 are sequentially connected from top to bottom. The two ends of the first pipeline 2 are respectively connected to the hydraulic membrane executor 4 and the mixing pipe 1, and the two ends of the second pipeline 3 are respectively connected to the hydraulic membrane executor 4 and the control valve 5.

The mixing pipe 1 is horizontally arranged, one end of the mixing pipe 1 is a water inlet of fire-fighting water, and the other end of the mixing pipe 1 is a liquid outlet of mixed liquid; a water outlet 14 is formed in the upper end of one side, close to the water inlet of fire-fighting water, of the mixing pipe 1, and a foam liquid inlet pipe 15 is formed in the upper end of the middle of the mixing pipe 1. An inlet end flange plate 11 is arranged at the water inlet end of the mixing pipe 1, an outlet end flange plate 12 is arranged at the liquid outlet end of the mixing pipe 1, an upper end flange plate 13 is arranged at the foam liquid inlet pipe 15 of the mixing pipe 1, the mixing pipe 1 is connected with a water inlet pipeline through the inlet end flange plate 11, and the mixing pipe 1 is connected with a water outlet pipeline through the outlet end flange plate 12. The water inlet of mixing tube 1 is used for intaking, and the liquid outlet of mixing tube 1 is used for the play liquid of foam mixed liquid, the final delivery port of this device promptly.

The control valve 5 comprises a valve body 51, a valve seat 52, a valve rod 53, a valve clack 54 and a middle partition layer 55, wherein an upper valve cavity 56 and a lower valve cavity 57 are arranged in the valve body 51, the upper valve cavity 56 and the lower valve cavity 57 are separated by the middle partition layer 55 which is integrally connected with the valve body 51, the lower valve cavity 57 and the lower valve cavity 57 are sealed with each other, and the valve seat 52 is installed on the middle partition layer 55 of the valve body 51; the lower end of the valve rod 53 is arranged in the lower valve cavity 57, the valve clack 54 is arranged at the lower end of the valve rod 53, the initial position of the valve clack 54 is connected with the valve seat 52, the valve rod 53 moves to drive the valve clack 54 to move downwards, and at the moment, the upper valve cavity 56 and the lower valve cavity 57 are communicated with each other; the upper end of the valve rod 53 sequentially passes through the valve, the valve seat 52, the upper valve cavity 56 and the outer wall of the valve body 51 and then is connected with the lower end of the actuating mechanism rod through a connecting block 416; the valve body 51 is provided with a foam liquid inlet, a foam liquid first outlet 58 and a foam liquid second outlet 59, the foam liquid inlet is communicated with the upper valve cavity 56, and the foam liquid first outlet 58 and the foam liquid second outlet 59 are both communicated with the lower valve cavity 57; the foam liquid inlet is externally connected with a foam gear pump through a pipeline, and the first foam outlet is communicated with a foam liquid inlet pipe 15 on the mixing pipe 1.

Connecting flanges 510 are arranged at the foam liquid inlet and the first foam liquid outlet 58 of the control valve 5, and the foam liquid inlet and the first foam liquid outlet 58 of the control valve 5 are respectively connected with the foam gear pump and the foam liquid inlet pipe 15 of the mixing pipe 1 through the connecting flanges 510.

One end of the first pipeline 2 is connected with the water outlet 14 of the mixing pipe 1, and the other end of the first pipeline 2 is connected with the water inlet on the actuator upper shell 41 of the hydraulic membrane actuator 4; one end of the second pipeline 3 is connected with a liquid inlet on the actuator lower shell 42 of the liquid-operated membrane actuator 4, and the other end of the second pipeline 3 is connected with a second foam outlet on the valve body 51.

The hydraulic membrane actuator 4 comprises an actuator upper shell 41, an actuator lower shell 42, a rubber membrane 43, a membrane pressing sleeve 44, a membrane lower support 45, an actuator stepped rod 46, a packing screw sleeve 47, a pressing sleeve nut 48, a pressing nut 410 and a packing box 49; the actuator upper shell 41 and the actuator lower shell 42 are fixedly connected through bolts, the actuator step rod 46 comprises a first step rod 413, a second step rod 414 and a third step rod 415, the diameters of the first step rod, the second step rod 414 and the third step rod 415 are sequentially increased from top to bottom, the compression nut 410, the film compression sleeve 44, the rubber film 43 and the film lower support 45 are sequentially sleeved on the second step rod 414 from top to bottom, the upper end of the second step rod 414 is provided with an external thread matched with the compression nut 410, the compression nut 410 is screwed on the second step rod 414 through the external thread, and the compression nut 410 supports the upper end of the film compression sleeve 44 on the second step rod 414; the edge of the rubber film 43 is clamped by the actuator upper shell 41 and the actuator lower shell 42, and an inner cavity formed by the actuator upper shell 41 and the actuator lower shell 42 is divided into an upper end cavity 411 and a lower end cavity 412 which are sealed with each other by the rubber film 43; a pressing sleeve nut 48 and a packing screw sleeve 47 are sleeved on the third step rod 415, the pressing sleeve nut 48 is sleeved on a packing box 49, the packing box 49 is welded on the lower shell 42 of the actuator, the packing screw sleeve 47 is sleeved inside the packing box 49, and the upper end of the packing screw sleeve 47 tightly supports the lower end of the lower film support 45; the lower end of the actuator step rod 46 is connected with the upper end of the valve rod 53 of the control valve 5 through a connecting block 416, and the upper end of the actuator step rod 46 is connected with the guide sleeve 75 of the upper end adjusting module 7.

The lower end of the bracket 6 is provided with a flange base 62, and the flange base 62 is connected with the upper end of the valve body 51; the upper end of the bracket 6 is connected to the lower end of the lower actuator housing 42.

The upper end adjusting module 7 comprises a fixed flange 71, a flange end cover 72, a valve cover 73, an adjusting spring 74, a guide sleeve 75, an adjusting spring upper support 77, an adjusting spring lower support 76, an adjusting screw 78 and a locking nut 79; the lower end of the fixed flange 71 is welded on the actuator upper shell 41, the flange end cover 72 is fixedly connected with the upper end of the fixed flange 71 to form a sealed flange cavity, the guide sleeve 75 is fixed on the actuator lower shell 42, the adjusting spring lower support 76 is sleeved on the guide sleeve 75, and the upper end of the actuator stepped rod 46 passes through the guide sleeve 75 and is fixed on the adjusting spring lower support 76; the adjusting screw 78 penetrates through the flange end cover 72, the upper end of the adjusting screw 78 is connected with the locking nut 79, the lower end of the adjusting screw 78 is fixedly connected with the adjusting spring upper support 77 in the flange cavity, the upper end of the adjusting spring 74 is connected to the adjusting spring upper support 77, and the lower end of the adjusting spring 74 is connected to the adjusting spring lower support 76. The upper end adjusting module 7 further comprises a valve cover 73, and the valve cover 73 is sleeved outside the locking nut 79 and the adjusting screw 78 and forms a seal for the locking nut and the adjusting screw.

A valve stroke graduated scale 61 is fixed on the bracket 6.

The connecting block 416 comprises a lower end connecting pipe and an upper end connecting groove block which are connected into a whole, a threaded cylindrical cavity is arranged in the lower end connecting pipe, the upper end of the valve rod 53 is matched with the cylindrical cavity through external threads and screwed in the lower end connecting pipe, a T-shaped groove is formed in the upper end connecting groove block, a T-shaped connecting block 416 matched with the T-shaped groove is arranged at the lower end of the actuating mechanism rod, and the actuating mechanism rod is embedded in the T-shaped groove through the T-shaped connecting block 416 to be connected with the upper end connecting groove block.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.

Claims

1. A mixer capable of adjusting the proportion of foam liquid is characterized in that: comprises a mixing pipe (1), a first pipeline (2), a second pipeline (3), a hydraulic membrane actuator (4), a control valve (5), a bracket (6) and an upper end adjusting module (7); the upper end adjusting module (7), the hydraulic membrane actuator (4), the bracket (6), the control valve (5) and the mixing pipe (1) are sequentially connected from top to bottom; the mixing pipe (1) is horizontally arranged, one end of the mixing pipe (1) is a water inlet of fire-fighting water, and the other end of the mixing pipe (1) is a liquid outlet of mixed liquid; a water outlet (14) is formed in the upper end of one side, close to the water inlet of the fire-fighting water, of the mixing pipe (1), and a foam liquid inlet pipe (15) is formed in the upper end of the middle of the mixing pipe (1);

the control valve (5) comprises a valve body (51), a valve seat (52), a valve rod (53), a valve clack (54) and a middle partition layer (55), an upper valve cavity (56) and a lower valve cavity (57) are arranged in the valve body (51), the upper valve cavity (56) and the lower valve cavity (57) are separated by the middle partition layer (55) which is connected with the valve body (51) into a whole, the lower valve cavity (57) and the lower valve cavity (57) are sealed with each other, and the valve seat (52) is installed on the middle partition layer (55) of the valve body (51); the lower end of the valve rod (53) is arranged in the lower valve cavity (57), the valve clack (54) is arranged at the lower end of the valve rod (53), the initial position of the valve clack (54) is connected with the valve seat (52), the valve rod (53) moves to drive the valve clack (54) to move downwards, and at the moment, the upper valve cavity (56) is communicated with the lower valve cavity (57); the upper end of the valve rod (53) sequentially penetrates through the outer walls of the valve, the valve seat (52), the upper valve cavity (56) and the valve body (51) and then is connected with the lower end of the actuating mechanism rod through a connecting block (416); a foam liquid inlet, a first foam liquid outlet (58) and a second foam liquid outlet (59) are formed in the valve body (51), the foam liquid inlet is communicated with the upper valve cavity (56), and the first foam liquid outlet (58) and the second foam liquid outlet (59) are both communicated with the lower valve cavity (57); the foam liquid inlet is externally connected with a foam gear pump through a pipeline, and the first foam outlet is communicated with a foam liquid inlet pipe (15) on the mixing pipe (1);

one end of the first pipeline (2) is connected with a water outlet (14) of the mixing pipe (1), and the other end of the first pipeline (2) is connected with a water inlet on an actuator upper shell (41) of the hydraulic membrane actuator (4); one end of the second pipeline (3) is connected with a liquid inlet on an actuator lower shell (42) of the hydraulic membrane actuator (4), and the other end of the second pipeline (3) is connected with a second foam outlet on the valve body (51);

the hydraulic membrane actuator (4) comprises an actuator upper shell (41), an actuator lower shell (42), a rubber membrane (43), a membrane pressing sleeve (44), a membrane lower support (45), an actuator step rod (46), a packing screw sleeve (47), a pressing sleeve nut (48), a pressing nut (410) and a packing box (49); the actuator upper shell (41) is fixedly connected with the actuator lower shell (42) through a bolt, the actuator stepped rod (46) comprises a first stepped rod (413), a second stepped rod (414) and a third stepped rod (415), the diameters of the first stepped rod, the second stepped rod and the third stepped rod are sequentially increased from top to bottom, a compression nut (410), a film compression sleeve (44), a rubber film (43) and a film lower support (45) are sequentially sleeved on the second stepped rod (414) from top to bottom, an external thread matched with the compression nut (410) is arranged at the upper end of the second stepped rod (414), the compression nut (410) is screwed on the second stepped rod (414) through the external thread, and the compression nut (410) supports the upper end of the film compression sleeve (44) on the second stepped rod (414); the edge of the rubber film (43) is clamped by the actuator upper shell (41) and the actuator lower shell (42), and an inner cavity formed by the actuator upper shell (41) and the actuator lower shell (42) is divided into an upper end cavity (411) and a lower end cavity (412) which are sealed with each other by the rubber film (43); a pressing sleeve nut (48) and a packing screw sleeve (47) are sleeved on the third step rod (415), the pressing sleeve nut (48) is sleeved on a packing box (49), the packing box (49) is welded on the lower shell (42) of the actuator, the packing screw sleeve (47) is sleeved inside the packing box (49), and the upper end of the packing screw sleeve (47) tightly pushes the lower end of the lower film support (45); the lower end of the execution mechanism stepped rod (46) is connected with the upper end of a valve rod (53) of the control valve (5) through a connecting block (416), and the upper end of the execution mechanism stepped rod (46) is connected with a guide sleeve (75) of an upper end adjusting module (7);

the lower end of the support (6) is provided with a flange base (62), and the flange base (62) is connected with the upper end of the valve body (51); the upper end of the bracket (6) is connected with the lower end of the lower shell (42) of the actuator;

the upper end adjusting module (7) comprises a fixed flange (71), a flange end cover (72), a valve cover (73), an adjusting spring (74), a guide sleeve (75), an adjusting spring upper support (77), an adjusting spring lower support (76), an adjusting screw (78) and a locking nut (79); the lower end of the fixed flange (71) is welded on the actuator upper shell (41), the flange end cover (72) is fixedly connected with the upper end of the fixed flange (71) to form a sealed flange cavity, the guide sleeve (75) is fixed on the actuator lower shell (42), the adjusting spring lower support (76) is sleeved on the guide sleeve (75), and the upper end of the actuator stepped rod (46) penetrates through the guide sleeve (75) and is fixed on the adjusting spring lower support (76); the adjusting screw (78) penetrates through the flange end cover (72), the upper end of the adjusting screw (78) is connected with the locking nut (79), the lower end of the adjusting screw (78) is fixedly connected with the adjusting spring upper support (77) in the flange cavity, the upper end of the adjusting spring (74) is connected onto the adjusting spring upper support (77), and the lower end of the adjusting spring (74) is connected onto the adjusting spring lower support (76).

2. The mixer capable of adjusting the proportion of the foam liquid according to claim 1, wherein: and a valve stroke scale (61) is fixed on the support (6).

3. The mixer capable of adjusting the proportion of the foam liquid according to claim 1, wherein: the upper end adjusting module (7) further comprises a valve cover (73), and the valve cover (73) is sleeved on the outer sides of the locking nut (79) and the adjusting screw (78) and seals the locking nut and the adjusting screw.

4. The mixer capable of adjusting the proportion of the foam liquid according to claim 1, wherein: and the foam liquid inlet and the first foam liquid outlet (58) of the control valve (5) are respectively provided with a connecting flange (510), and the foam liquid inlet and the first foam liquid outlet (58) of the control valve (5) are respectively connected with the foam gear pump and the foam liquid inlet pipe (15) of the mixing pipe (1) through the connecting flanges (510).

5. The mixer capable of adjusting the proportion of the foam liquid according to claim 1, wherein: the water inlet end of the mixing pipe (1) is provided with an inlet end flange plate (11), the liquid outlet end of the mixing pipe (1) is provided with an outlet end flange plate (12), an upper end flange plate (13) is arranged at the foam liquid inlet pipe (15) of the mixing pipe (1), the mixing pipe (1) is connected with a water inlet pipeline through the inlet end flange plate (11), and the mixing pipe (1) is connected with a water outlet pipeline through the outlet end flange plate (12).

6. The mixer capable of adjusting the proportion of the foam liquid according to claim 1, wherein: the connecting block (416) is provided with threaded cylinder chamber including connecting as an organic whole lower extreme connecting pipe and upper end connecting groove piece lower extreme connecting pipe, the upper end of valve rod (53) is through the screw-thread fit of external screw thread and cylinder chamber and screw in the lower extreme connecting pipe, be provided with T type groove on the upper end connecting groove piece, actuating mechanism pole lower extreme is provided with T type groove matched with connecting block (416), the actuating mechanism pole inlays the dress through T type connecting block (416) and realizes being connected of actuating mechanism pole and upper end connecting groove piece in T type groove.