Large-range proportioning mixer for fire-fighting foam liquid

Abstract

The utility model relates to the technical field of fire-fighting water treatment, and particularly discloses a fire-fighting foam liquid large-range proportioning mixer which comprises a mixer body, a water inlet and a water outlet are formed in the two ends of the mixer body, and the water inlet and the water outlet are used for inflow and outflow of fire-fighting water respectively; a liquid inlet is formed in the top of the mixer body and used for inflow of foam liquid. A liquid outlet is formed in the mixer body, faces one side of the water outlet and is used for enabling foam liquid to flow out; a foam cylinder is arranged at the liquid inlet, a guide rod is arranged in the foam cylinder and connected with the movable plate through a connecting structure, an elastic piece is sleeved on the guide rod, a conical piece is arranged at one end of the guide rod, a liquid inlet ring sleeve is fixed on the outer side of the foam cylinder, and the conical piece abuts against the liquid inlet ring sleeve initially. The opening degree of the movable plate in the equipment is automatically adjusted, so that the accurate mixing proportion of fire-fighting foam liquid is ensured, and the fire-fighting effect is ensured. The application has the effects of reducing the production cost of the proportioning mixer and improving the application flexibility of the proportioning mixer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire water treatment, and in particular to a fire foam liquid large-range proportioning mixer. BACKGROUND

[0002] In the field of fire fighting, the fire foam liquid large-range proportioning mixer plays a key role. It has a water inlet connected to a fire pipe to introduce fire water, a water outlet connected to a fire equipment, and a foam liquid inlet and outlet connected to a foam pipe to mix the foam liquid with the fire water to form fire foam liquid for fire extinguishing.

[0003] Currently, the dynamic balance pressure type proportioning mixer can stabilize the mixing ratio in a large pressure and flow range. It uses a built-in pressure regulating chamber and components including a piston, a cylinder, a diaphragm pressing plate, a diaphragm, a pressure taking shaft, and a pressure regulating chamber to maintain the dynamic balance between the foam liquid pressure and the fire water pressure to achieve fire water proportioning adjustment. However, this design has many drawbacks. The complex mechanical adjustment device greatly increases the manufacturing cost of the equipment, and in some specific environments, due to its complex structure, large size and weight, the application flexibility is greatly limited.

[0004] With the continuous progress of modern industrial technology, the fire proportioning mixer is required to be smaller and lighter in various industries to meet the requirements of fire fighting in different scenarios and improve the overall performance and adaptability of fire fighting equipment. CONTENT OF THE INVENTION

[0005] To meet the demand for small size and light weight of the fire proportioning mixer, the present application provides a fire foam liquid large-range proportioning mixer.

[0006] The fire foam liquid large-range proportioning mixer provided by the present application adopts the following technical solution:

[0007] A fire foam liquid large-range proportioning mixer, characterized in that it comprises:

[0008] A mixer body, a flow channel is formed in the mixer body, a water inlet and a water outlet are arranged at both ends of the flow channel, the water inlet is used to connect a fire pipe, and the water outlet is used to connect a water outlet end of a fire equipment; a liquid inlet is arranged at the top of the mixer body, and a liquid outlet is arranged on the mixer body and communicates with the liquid inlet and faces the side of the water outlet;

[0009] An activity plate is installed on the mixer body at the water outlet, is matched with the shape of the water outlet, and is hinged to the mixer body near the side of the liquid inlet;

[0010] A foam cylinder is installed on the mixer body at the liquid inlet.

[0011] A guide rod is slidably installed in the foam cylinder and extends into the flow channel of the mixer body from the liquid inlet, and the guide rod is connected with the movable plate through a connecting structure;

[0012] An elastic member is sleeved on the guide rod, one side of the elastic member acts on one end of the mixer body close to the liquid inlet, and the other side of the elastic member acts on the side of the guide rod away from the mixer body;

[0013] A conical member is arranged on the side of the guide rod away from the mixer body;

[0014] A liquid inlet ring is fixedly installed on the side of the foam cylinder away from the mixer body, and the elastic member acts on the guide rod to push the conical member to abut against the liquid inlet ring.

[0015] By adopting the above technical scheme, the water inlet of the fire-fighting foam liquid large-scale proportioning mixer is directly connected with the fire-fighting pipeline, the liquid inlet is connected with the foam pipe, when the fire-fighting water flows from the fire-fighting pipeline to the fire-fighting equipment through the mixer body, the foam liquid flows out from the foam pump and mixes with the fire-fighting water through the mixer body, the opening of the movable plate in the fire-fighting foam liquid large-scale proportioning mixer is automatically adjusted by the elastic member to ensure the accurate mixing proportion of the fire-fighting water and the foam liquid, to ensure the fire-fighting effect, and to improve the flexibility of the application of the proportioning mixer, and the design is more compact and lightweight.

[0016] Preferably, two connecting columns are symmetrically formed on the side of the movable plate, the two connecting columns are symmetrically installed on the mixer body with the axis of the guide rod as the axis of symmetry, and are located at the position of the center of the movable plate close to the liquid inlet and are hinged to the mixer body.

[0017] By adopting the above technical scheme, the design of the two connecting columns makes the movable plate flip along the axis of the two connecting columns when the fluid flows.

[0018] Preferably, a pressure balance hole is formed on the side of the movable plate close to the liquid inlet, and the pressure balance hole penetrates the movable plate.

[0019] By adopting the above technical scheme, the design of the pressure balance hole is to make part of the water flow to the water outlet side through the pressure balance hole when the pressure on the water inlet side increases, so as to reduce the pressure difference between the water inlet and the water outlet on both sides of the movable plate, make the pressure on the upper half end surface and the lower half end surface of the movable plate consistent, and make the movable plate flip.

[0020] Preferably, a flip limiting block is formed on the side of the movable plate away from the liquid inlet, a corresponding clamping groove is formed on the side of the mixer body corresponding to the flip limiting block, and the clamping groove and the flip limiting block are clamped.

[0021] By adopting the technical scheme, the movable plate far from the liquid inlet side can only turn over to the side of the water outlet.

[0022] Preferably, a hollow guide plate is fixedly arranged on one side of the guide rod in the foam cylinder, a plurality of communication holes for passing the foam liquid are provided through the hollow guide plate, and the outer wall of the hollow guide plate is in contact with the inner wall of the foam cylinder.

[0023] By adopting the technical scheme, the hollow guide plate provides a guiding function for the movement of the guide rod, the design that the outer wall of the hollow guide plate is in contact with the inner wall of the foam cylinder ensures that the hollow guide plate can stably slide in the foam cylinder and will not shake or jam due to a too large gap with the inner wall of the foam cylinder, and the communication holes can supply the foam liquid.

[0024] Preferably, the elastic member is in abutment with the hollow guide plate on the side far from the mixer body, and the other side of the elastic member is in abutment with the liquid outlet groove wall.

[0025] By adopting the technical scheme, the elastic member has the functions of buffering and shock absorption, and the elasticity of the elastic member can control the turning-over amplitude of the movable plate.

[0026] Preferably, the connecting structure comprises a hinged base and a connecting rod, the hinged base is installed on the side of the movable plate close to the water inlet, one end of the connecting rod is hinged to the hinged base, and the other end of the connecting rod is hinged to one end of the guide rod in the mixer body.

[0027] By adopting the technical scheme, the connecting structure connects the movable plate and the guide rod, so that the elasticity of the elastic member controls the turning-over amplitude of the movable plate.

[0028] Preferably, the number of the connecting rods is two, and the two connecting rods are respectively located on the two sides of the hinged base.

[0029] By adopting the technical scheme, the design of the two connecting rods improves the overall stability of the connecting structure.

[0030] Preferably, the foam cylinder is provided with a foam pipe joint on the side far from the mixer body, the foam cylinder is fixedly connected with the foam pipe joint, and the foam pipe joint is used for connecting with the foam pipe.

[0031] By adopting the technical scheme, the foam pipe transports the foam liquid through the foam pipe joint.

[0032] In summary, the present application has at least one of the following beneficial technical effects:

[0033] 1. The water inlet of the fire-fighting foam liquid large-range proportioning mixer is directly connected with the fire-fighting pipeline, and the liquid inlet is connected with the foam pipe. When the fire-fighting water flows from the fire-fighting pipeline to the fire-fighting equipment through the mixer body, the foam liquid flows out from the foam pump and mixes with the fire-fighting water through the mixer body. The opening of the movable plate in the fire-fighting foam liquid large-range proportioning mixer is automatically adjusted by the elastic member to ensure the accurate mixing proportion of the fire-fighting water and the foam liquid, to ensure the fire-fighting effect, and to improve the flexibility of the application of the proportioning mixer, and the design is more compact and lightweight.

[0034] 2. The pressure balance hole is designed to reduce the pressure difference between the two sides of the movable plate when the pressure on the water inlet side increases, so that the pressure on the upper half end surface and the lower half end surface of the movable plate tends to be consistent, and the movable plate is turned over.

[0035] 3. The hollow guide plate provides a guiding function for the movement of the guide rod. The design that the outer wall of the hollow guide plate is in contact with the inner wall of the foam cylinder ensures that the hollow guide plate can stably slide in the foam cylinder without shaking or jamming due to the too large gap between the inner wall of the foam cylinder. At the same time, the communication hole can be used for the foam liquid to pass through. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is the overall structure schematic diagram of the embodiment of the present application;

[0037] Figure 2 is the cross-sectional view of the embodiment of the present application;

[0038] Figure 3 is the schematic diagram of the installation structure of the movable plate in the embodiment of the present application.

[0039] BRIEF DESCRIPTION OF DRAWINGS: 1, mixer body; 11, water inlet; 12, water outlet; 13, liquid inlet; 14, liquid outlet; 2, movable plate; 21, pressure balance hole; 22, connecting column; 23, turning limiting block; 24, clamping groove; 3, guide rod; 31, foam cylinder; 32, foam pipe joint; 33, conical part; 34, hollow guide plate; 341, communication hole; 4, elastic member; 5, connecting structure; 51, hinged base; 52, connecting rod; 6, liquid inlet ring. DETAILED DESCRIPTION

[0040] The following will be described in detail in combination with the accompanying Figures 1-3 The present application will be further described in detail.

[0041] The embodiment of the present application discloses a fire-fighting foam liquid large-range proportioning mixer.

[0042] Refer to Figure 1 and Figure 2The utility model provides a kind of fire-fighting foam liquid wide range proportion mixer, including mixer body 1, flow channel is formed in mixer body 1, and inlet 11 and outlet 12 are formed at both ends of flow channel, and inlet 11 and outlet 12 are used for the inflow and outflow of fire water respectively, in the embodiment, inlet 11 is used to connect the water outlet end of fire hydrant or fire equipment, and outlet 12 is used to connect fire pipeline.Mixer body 1 top is provided with inlet 13, and inlet 13 is used for the inflow of foam liquid;Mixing body 1 is provided with outlet 14 that is communicated with inlet 13, and outlet 14 is towards the side of outlet 12, for the outflow of foam liquid.Mixer body 1 is installed with movable plate 2 at outlet 12, movable plate 2 is compatible with the shape of outlet 12, and movable plate 2 is hinged with mixer body 1 near inlet 13 side.

[0043] Mixing body 1 is installed with foam cylinder 31 at inlet 13, and guide rod 3 is slidably installed in foam cylinder 31, guide rod 3 extends into the flow channel of mixer body 1 from inlet 13, guide rod 3 is connected with movable plate 2 by connecting structure 5, elastic member 4 is sleeved on guide rod 3, one side of elastic member 4 acts on the end of mixer body 1 near inlet 13, and the other side of elastic member 4 acts on the side of guide rod 3 away from mixer body 1;Conical part 33 is arranged on the side of guide rod 3 away from mixer body 1, and inlet ring 6 is fixedly installed on the side of foam cylinder 31 away from mixer body 1;Elastic member 4 acts on guide rod 3 to push conical part 33 to abut against inlet ring 6.

[0044] Fire water flows into flow channel from inlet 11, and flows to outlet 12 along flow channel, when the force of fire water acting on movable plate 2 is greater than the elastic force generated by the compression of elastic member 4, movable plate 2 is turned over under the action of the force of fire water, at the same time, movable plate 2 pulls guide rod 3 to move to inlet 13 side through connecting structure 5, and compresses elastic member 4, guide rod 3 drives conical part 33 to move to inlet 13 side, at this time, the opening between conical part 33 and inlet ring 6 becomes larger, foam liquid enters foam cylinder 31 from the gap between inlet ring 6 and conical part 33, and flows out from outlet 14, and mixes with fire water.

[0045] When the flow of the fire water increases, the opening of the movable plate 2 under the action of the fire water increases, the movable plate 2 pulls the guide rod 3 to move a distance, the opening between the conical part 33 and the liquid inlet ring 6 increases, and the amount of foam liquid entering is further increased to achieve the set mixing ratio of the fire water. When the flow of the fire water is zero, the elastic member 4 is elongated until the initial state is restored, the conical part 33 abuts against the liquid inlet ring 6, the movable plate 2 returns to the initial position and blocks the water outlet 12, and there is no liquid inlet in the mixer body 1. The process realizes the automatic opening and closing of the movable plate 2, thereby changing the cross-sectional area of the flow channel and the amount of fire water and foam liquid entering, and realizing the automatic and wide-range adjustment of the mixing ratio of the fire water and the foam water to form a foam mixed liquid with fire extinguishing efficiency.

[0046] With reference to Figure 2 and Figure 3 In this embodiment, the movable plate 2 is disc-shaped, and two connecting columns 22 are symmetrically formed on the periphery of the movable plate 2. The two connecting columns 22 are symmetrically installed on the mixer body 1 with the axis of the guide rod 3 as the axis of symmetry, and are located at the center of the movable plate 2 close to the liquid inlet 13 and are hinged to the mixer body 1. This design allows the movable plate 2 to flip along the axis of the two connecting columns 22 when fluid flows through.

[0047] A pressure balance hole 21 is formed on the side of the movable plate 2 close to the liquid inlet 13, and the pressure balance hole 21 penetrates the movable plate 2. When the fire water flows into the mixer body 1 from the water inlet 11, the air in the flow channel is squeezed, and the squeezed air can be quickly discharged from the pressure balance hole 21 into the water outlet 12 and into the fire pipe, so that the pressure on both sides of the movable plate 2 is balanced, facilitating the flipping of the movable plate 2.

[0048] In this embodiment, a flipping limiting block 23 is formed on the side of the movable plate 2 away from the liquid inlet 13, and the flipping limiting block 23 is located on the outer peripheral wall of the movable plate 2. The mixer body 1 is provided with a corresponding clamping groove 24 at a position corresponding to the flipping limiting block 23 on the side of the water outlet 12, and the clamping groove 24 and the flipping limiting block 23 are clamped. This design allows the side of the movable plate 2 away from the liquid inlet 13 to flip only to the side of the water outlet 12.

[0049] Further, the diameter of the bottom surface of the conical part 33 is smaller than the inner diameter of the foam cylinder 31, so that the conical part 33 can slide in the foam cylinder 31 under the driving of the guide rod 3. The outer peripheral side of the liquid inlet ring 6 is threadedly connected with the inner peripheral side of the foam cylinder 31, and the outer peripheral side of the foam cylinder 31 is threadedly connected with the inner wall of the mixer body 1 at the liquid inlet 13.

[0050] The guide rod 3 is fixedly arranged on one side in the foam cylinder 31 and provided with a hollow guide plate 34, four communication holes 341 are uniformly and penetratingly arranged on the hollow guide plate 34, the hollow guide plate 34 is matched with the inner wall of the foam cylinder 31 and is in contact with the inner side wall of the foam cylinder 31, the guide rod 3 can drive the hollow guide plate 34 to slide in the foam cylinder 31, so that the stability of the guide rod 3 during movement can be ensured. Meanwhile, the communication holes 341 can be used for the foam liquid to pass through. The elastic member 4 is abutted against the hollow guide plate 34 on the side away from the mixer body 1, and the other side of the elastic member 4 is abutted against the groove wall of the liquid outlet 14. In the embodiment, the elastic member 4 is a compression spring.

[0051] When the fire-fighting water flows in the flow channel, the movable plate 2 is turned over, the movable plate 2 drives the guide rod 3 to move along the axis to the liquid inlet 13 side, the guide rod 3 drives the hollow guide plate 34 and the conical member 33 to move together, the hollow guide plate 34 acts on the spring, so that the spring is compressed and the elastic force is increased, when there is an opening between the conical member 33 and the liquid inlet ring sleeve 6, the foam liquid flows from the gap between the liquid inlet ring sleeve 6 and the conical member 33 into the foam cylinder 31, passes through the communication holes 341 and flows into the liquid inlet 13 from the liquid outlet 14.

[0052] The foam cylinder 31 is provided with a foam pipe joint 32 on the side away from the mixer body 1, and the outer circumferential side of the foam cylinder 31 is threadedly connected with the inner circumferential side of the foam pipe joint 32. The foam pipe joint 32 is used for being connected with a foam pipe.

[0053] Reference Figure 1 and Figure 2 The connecting structure 5 includes a hinged base 51 and a connecting rod 52, the hinged base 51 is vertically installed on the movable plate 2 on the side close to the water inlet 11; in the embodiment, the connecting rod 52 is provided as two, the two connecting rods 52 are parallel to each other, and the two connecting rods 52 are located on the two sides of the hinged base 51, one end of the connecting rod 52 is hinged to the hinged base 51, and the other end is hinged to the guide rod 3 at one end of the flow channel.

[0054] The working principle of the embodiment of the application is as follows:

[0055] The elastic member 4 initially pushes the conical member 33 to abut against the liquid inlet ring 6, the movable plate 2 blocks the water outlet 12, and the mixer body 1 has no liquid inlet. The fire-fighting water flows into the flow channel from the water inlet 11 and flows to the water outlet 12. When the force of the fire-fighting water acting on the movable plate 2 is greater than the elastic force generated by the compression of the elastic member 4, the movable plate 2 is flipped along the axis of the connecting column 22 under the action of the fire-fighting water, and simultaneously pulls the guide rod 3 to move to one side of the liquid inlet 13, compresses the elastic member 4, and drives the conical member 33 to move to one side of the liquid inlet 13, so that the opening between the conical member 33 and the liquid inlet ring 6 is increased. After the opening between the conical member 33 and the liquid inlet ring 6 is increased, the foam liquid enters the foam cylinder 31 through the gap between the conical member 33 and the liquid inlet ring 6, flows into the liquid inlet 13 through the communication hole 341 of the hollow guide plate 34 of the guide rod 3, and then flows out of the liquid outlet 14, and then is mixed with the fire-fighting water to form a foam mixture.

[0056] When the flow of the fire-fighting water increases, the opening of the movable plate 2 under the action of the fire-fighting water increases, the guide rod 3 is pulled to move a greater distance, and the opening between the conical member 33 and the liquid inlet ring 6 is further increased, so that the amount of foam liquid entering is increased, so as to achieve the set mixing ratio with the fire-fighting water; when the flow of the fire-fighting water is zero, the elastic member 4 is elongated to return to the initial state, the conical member 33 abuts against the liquid inlet ring 6, and the movable plate 2 returns to the initial position to block the water outlet 12, and the liquid inlet of the mixer body 1 is stopped.

[0057] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so: any equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A fire fighting foam concentrate macro proportioner characterized by, The utility model relates to a kind of fire-fighting foam mixing device, including: The mixer body (1) is formed with flow channel inside, the both ends of the flow channel are equipped with water inlet (11) and water outlet (12) respectively, the water inlet (11) is used to connect the water outlet end of fire-fighting equipment, the water outlet (12) is used to connect fire-fighting pipeline;The top of the mixer body (1) is provided with liquid inlet (13), the mixer body (1) is provided with liquid outlet (14) on the side of liquid inlet (13) and is communicated with liquid inlet (13) and is towards the side of water outlet (12); The movable plate (2) is installed on the mixer body (1) at the water outlet (12), which is matched with the shape of the water outlet (12), and the movable plate (2) is hinged to the mixer body (1) on the side close to the liquid inlet (13); The foam cylinder (31) is installed on the mixer body (1) at the liquid inlet (13); The guide rod (3) is slidingly installed in the foam cylinder (31) and extends into the flow channel of the mixer body (1) from the liquid inlet (13), and the guide rod (3) is connected to the movable plate (2) by the connecting structure (5); The elastic member (4) is sleeved on the guide rod (3), and one side of the elastic member (4) acts on the end of the mixer body (1) close to the liquid inlet (13), and the other side of the elastic member (4) acts on the side of the guide rod (3) away from the mixer body (1); The conical member (33) is arranged on the side of the guide rod (3) away from the mixer body (1); The liquid inlet ring (6) is fixedly installed on the side of the foam cylinder (31) away from the mixer body (1), and the elastic member (4) acts on the guide rod (3) to push the conical member (33) to abut against the liquid inlet ring (6).

2. A fire fighting foam concentrate macro proportioner according to claim 1 wherein, The movable plate (2) is symmetrically formed with two connecting columns (22) on the side, and the two connecting columns (22) are symmetrically installed on the mixer body (1) with the axis of the guide rod (3) as the axis of symmetry, and are hinged to the mixer body (1) at the position close to the liquid inlet (13) in the center of the movable plate (2).

3. A fire fighting foam concentrate macro proportioner according to claim 1 wherein, The movable plate (2) is provided with a pressure balance hole (21) on the side close to the liquid inlet (13), and the pressure balance hole (21) penetrates the movable plate (2).

4. A fire fighting foam concentrate macro proportioner according to claim 1 wherein, The movable plate (2) is formed with a turnover limiting block (23) on the side away from the liquid inlet (13), and the mixer body (1) is provided with a corresponding clamping groove (24) at the position corresponding to the turnover limiting block (23) on the side of the water outlet (12), and the clamping groove (24) and the turnover limiting block (23) are clamped.

5. A fire fighting foam concentrate macro proportioner according to claim 1 wherein, The guide rod (3) is fixedly provided with a hollow guide plate (34) on the side in the foam cylinder (31), a plurality of communication holes (341) for passing foam liquid are provided in the hollow guide plate (34), and the outer wall of the hollow guide plate (34) is in contact with the inner wall of the foam cylinder (31).

6. A fire fighting foam concentrate macro proportioner according to claim 5 wherein, The elastic member (4) abuts against the hollow guide plate (34) on the side away from the mixer body (1), and the other side of the elastic member (4) abuts against the groove wall of the liquid outlet (14).

7. A fire fighting foam concentrate macro proportioner according to claim 1 wherein, The connecting structure (5) comprises a hinged base (51) and a connecting rod (52), the hinged base (51) is installed on the movable plate (2) near the water inlet (11) side, one end of the connecting rod (52) is hinged with the hinged base (51), and the other end is hinged on one end of the guide rod (3) in the mixer body (1).

8. A fire fighting foam concentrate macro proportioner according to claim 7, wherein, The number of the connecting rod (52) is two, and the two connecting rods (52) are respectively located on both sides of the hinged base (51).

9. A fire fighting foam concentrate macro proportioner according to claim 1 wherein, The foam pipe joint (32) is connected with the foam pipe.

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