Balanced foam proportional mixing device

Abstract

The utility model discloses a balanced foam proportion mixing device, which relates to the technical field of fire fighting, and comprises a device main body, a mixing box, a storage tank, a scraper blade and a third control valve, a control panel is installed on one side of the outside of the device main body, and a pressure gauge is arranged on the other side of the device main body. When the device is used, a first control valve at the bottom of a foaming agent tank is opened to enable a foaming agent to enter a mixing box, then a first control valve at the bottom of a water tank is opened to enable water to enter the mixing box to be mixed with the foaming agent, the two control valves are closed during mixing, and foam obtained after mixing is finished is discharged into a storage tank; and after the foam in the storage tank is used up, a second control valve is opened to enable the foam which is mixed in the mixing box to be discharged into the storage tank, so that the device can mix the foam while using the foam, and the foam is continuously supplied.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting, in particular to a balanced foam proportion mixing device. Background Art

[0002] The foam used for fire extinguishing is made by mixing water and foaming agent in a certain proportion through a mixing device. After searching, the Chinese patent authorization number CN210250937U discloses a balanced foam proportion mixing device for fire fighting, which belongs to the technical field of mixing devices. When the water and foaming agent are mixed into a mixture and a notification is issued, the water control switch is turned off to prevent water from continuing to enter the interior of the mixing box, thereby facilitating the mixing of the foaming agent and water by the mixing device, and achieving the effect of preventing the mixed foam from being too thick or too thin. However, when the device is in use, when the foam in the mixing box is used up, it needs to be re-mixed before the foam can be continuously supplied, which results in the inability to continuously supply foam during use, thereby delaying the fire extinguishing time during fire fighting. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a balanced foam proportioning device, which solves the problem that when the prior art device is in use, the foam inside the mixing box needs to be remixed after being used up before the foam can be continuously supplied, resulting in an inability to continuously supply foam during use, which in turn delays the fire extinguishing time.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a balanced foam proportion mixing device, comprising a device body, a mixing box, a storage tank, a scraper and a third control valve, a control panel is installed on one side of the outside of the device body, a pressure gauge is arranged on the other side of the device body, the pressure gauge is connected to the mixing box, the top of the mixing box is connected to the bottom of the foam agent tank and the bottom of the water tank respectively through two first control valves, the bottom of the foam agent tank and the top of the water tank are both provided with a water inlet, the bottom of the mixing box is connected to the storage tank through a second control valve, the bottom of one end of the storage tank is connected to one end of the pressure pump, and the other end of the pressure pump is connected to one end of the discharge pipe, and the device body and the mixing box can be partially made of transparent material to facilitate observation of the interior.

[0005] Preferably, a driving motor is installed at one end of the storage tank, and a turntable is mounted on the outside of the output end of the driving motor. One side of the turntable is welded to one end of the scraper. The driving motor can drive the turntable to rotate, and the rotation of the turntable can also drive the scraper to rotate. The rotation of the scraper can stir the foam inside the storage tank, thereby preventing the foam inside the storage tank from settling easily due to long-term standing and insufficient mixing.

[0006] Preferably, the scraper fits tightly against the inner wall of the storage tank, is arranged in a circular shape with equal spacing, and is connected to each other by a connecting ring. The scraper scrapes the inner wall of the storage tank, so that the foam inside the storage tank can be fully discharged to avoid hanging on the wall.

[0007] Preferably, one side of the mixing box is connected to the overflow box through a third control valve and a fourth control valve. The third control valve is arranged above the fourth control valve. When there is too much foaming agent inside the mixing box, it enters the overflow box through the third control valve, so that the foam inside the mixing box can be mixed in normal proportion.

[0008] Preferably, liquid level sensors are provided at the top and bottom of the mixing box, and the liquid level sensors are electrically connected to the control panel. Liquid level sensing can indicate whether there is liquid inside the mixing tank and the internal water level.

[0009] The utility model provides a balanced foam proportion mixing device, which has the following beneficial effects:

[0010] (1) A balanced foam proportioning device, when in use, opens the first control valve at the bottom of the foaming agent tank to allow the foaming agent to enter the mixing box, and then opens the first control valve at the bottom of the water tank to allow water to enter the mixing box to mix with the foaming agent. During mixing, the two control valves are closed, and the foam after mixing is discharged into the storage tank, and then the first control valve is opened to mix again in the mixing box. When the foam in the storage tank is used up, the second control valve is opened to allow the foam in the mixing box to be discharged into the storage tank. This allows the device to mix the foam while using it, thereby continuously supplying foam.

[0011] (2) In a balanced foam proportioning device, when too much foaming agent is discharged into the mixing box, the third control valve is opened to allow the excess foaming agent to enter the overflow box. After the excess foaming agent is discharged from the mixing box, the mixing box can be mixed normally. After the mixing in the mixing box is completed and discharged into the storage tank, the fourth control valve is opened to allow the excess foaming agent in the overflow box to return to the mixing box for water addition and mixing, thereby helping to avoid excessive foam in the mixing box with no excess capacity for water dilution.

[0012] This solves the problem that when the existing device is in use, the foam in the mixing box needs to be remixed before the foam can be continuously supplied, resulting in an inability to continuously supply foam during use, which in turn delays the fire extinguishing time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the scraper structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the front view structure of the utility model;

[0017] Figure 5 It is a schematic diagram of the structure of the utility model from top view.

[0018] In the figure, 1. device body; 2. control panel; 3. pressure gauge; 4. mixing box; 5. first control valve; 6. foam agent tank; 7. water tank; 8. water inlet; 9. second control valve; 10. storage tank; 11. pressure pump; 12. discharge pipe; 13. drive motor; 14. turntable; 15. scraper; 16. connecting ring; 17. third control valve; 18. fourth control valve; 19. overflow box. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1:

[0021] See also Figure 1-5A balanced foam proportion mixing device comprises a device body 1, a mixing box 4, a storage tank 10, a scraper 15 and a third control valve 17. A control panel 2 is installed on one side of the outside of the device body 1, and a pressure gauge 3 is arranged on the other side of the device body 1. The pressure gauge 3 is connected to the mixing box 4. The top of the mixing box 4 is connected to the bottom of the foaming agent tank 6 and the bottom of the water tank 7 respectively through two first control valves 5. The bottom of the foaming agent tank 6 and the top of the water tank 7 are both provided with a water inlet 8. The bottom of the mixing box 4 is connected to the storage tank 10 through a second control valve 9. The bottom of one end of the storage tank 10 is connected to one end of a pressure pump 11. The other end of the pressure pump 11 is connected to one end of a discharge pipe 12. Liquid level sensors are arranged on the top and bottom of the mixing box 4, and the liquid The position sensor is electrically connected to the control panel 2. When the device is in use, the first control valve 5 at the bottom of the foaming agent tank 6 is opened to allow the foaming agent to enter the mixing box 4, and then the first control valve 5 at the bottom of the water tank 7 is opened to allow water to enter the mixing box 4 to mix with the foaming agent. During mixing, the two first control valves 5 are closed, and the foam after mixing is discharged into the storage tank 10, and then the first control valve 5 is opened to mix the inside of the mixing box 4 again. When the foam in the storage tank 10 is used up, the second control valve 9 is opened to allow the foam in the mixing box 4 to be discharged into the storage tank 10, so that the device can mix the foam while using it, thereby continuously supplying foam.

[0022] Embodiment 2:

[0023] A driving motor 13 is installed at one end of the storage tank 10, and a turntable 14 is mounted on the outside of the output end of the driving motor 13. One side of the turntable 14 is welded to one end of a scraper 15. The scraper 15 fits tightly against the inner wall of the storage tank 10. The scrapers 15 are arranged in a ring shape with equal spacing, and the scrapers 15 are connected to each other through a connecting ring 16. The driving motor 13 can drive the turntable 14 to rotate. The rotation of the turntable 14 can also drive the scraper 15 to rotate. The rotation of the scraper 15 can also stir the foam inside the storage tank 10, thereby preventing the foam inside the storage tube from settling easily due to long-term static state and insufficient mixing.

[0024] Embodiment 3:

[0025] One side of the mixing box 4 is connected to the overflow box 19 through the third control valve 17 and the fourth control valve 18. The third control valve 17 is arranged above the fourth control valve 18. When too much foaming agent is discharged from the mixing box 4, the third control valve 17 is opened to allow the excess foaming agent to enter the overflow box 19. After the excess foaming agent is discharged from the mixing box 4, the mixing box 4 can be mixed normally. After the mixing inside the mixing box 4 is completed and discharged into the storage tank 10, the fourth control valve 18 is opened to allow the excess foaming agent in the overflow box 19 to return to the mixing box 4 to add water for mixing, which is beneficial to avoid excessive foam in the mixing box 4 without excess capacity for dilution with water.

[0026] Working Principle: When the device is in use, the first control valve 5 at the bottom of the foaming agent tank 6 is opened to allow the foaming agent to enter the mixing box 4, and then the first control valve 5 at the bottom of the water tank 7 is opened to allow water to enter the mixing box 4 and mix with the foaming agent. During mixing, the two first control valves 5 are closed, and the foam after mixing is discharged into the storage tank 10, and then the first control valve 5 is opened to mix the inside of the mixing box 4 again. When the foam in the storage tank 10 is used up, the second control valve 9 is opened to allow the foam in the mixing box 4 to be discharged into the storage tank 10, so that the device can mix the foam while using it, thereby continuously supplying the foam, which can be driven by the motor 13. The rotating disk 14 can be driven to rotate, and the rotating disk 14 can drive the scraper 15 to rotate at the same time. The scraper 15 can stir the foam inside the storage tank 10 when it rotates, so as to avoid the foam inside the storage tube from being easily settled due to standing for a long time and insufficient mixing. When too much foaming agent is discharged from the mixing box 4, the third control valve 17 is opened to allow the excess foaming agent to enter the overflow box 19. After the excess foaming agent is discharged from the mixing box 4, the mixing box 4 can be mixed normally. After the mixing inside the mixing box 4 is completed and discharged into the storage tank 10, the fourth control valve 18 is opened to allow the excess foaming agent in the overflow box 19 to return to the mixing box 4 to be added with water for mixing.

[0027] The components of the utility model, including 1, device body; 2, control panel; 3, pressure gauge; 4, mixing box; 5, first control valve; 6, foam agent tank; 7, water tank; 8, water inlet; 9, second control valve; 10, storage tank; 11, pressure pump; 12, discharge pipe; 13, drive motor; 14, turntable; 15, scraper; 16, connecting ring; 17, third control valve; 18, fourth control valve; 19, overflow box, are all common standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0028] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A balanced foam proportioning device, characterized in that: The invention comprises a device body (1), a mixing box (4), a storage tank (10), a scraper (15) and a third control valve (17). A control panel (2) is installed on one side of the outside of the device body (1). A pressure gauge (3) is arranged on the other side of the device body (1). The pressure gauge (3) is connected to the mixing box (4). The top of the mixing box (4) is respectively connected to the bottom of a foaming agent tank (6) and the bottom of a water tank (7) through two first control valves (5). The bottom of the foaming agent tank (6) and the top of the water tank (7) are both provided with a water inlet (8). The bottom of the mixing box (4) is connected to the storage tank (10) through a second control valve (9). The bottom of one end of the storage tank (10) is connected to one end of a pressure pump (11). The other end of the pressure pump (11) is connected to one end of a discharge pipe (12).

2. A balanced foam proportioning device according to claim 1, characterized in that: A driving motor (13) is installed at one end of the storage tank (10), a rotating disk (14) is mounted outside the output end of the driving motor (13), and one side of the rotating disk (14) is welded to one end of a scraper (15).

3. A balanced foam proportioning device according to claim 1, characterized in that: The scrapers (15) are tightly fitted to the inner wall of the storage tank (10), the scrapers (15) are arranged in a ring shape with equal spacing, and the scrapers (15) are connected to each other via a connecting ring (16).

4. A balanced foam proportioning device according to claim 1, characterized in that: One side of the mixing box (4) is connected to the overflow box (19) through a third control valve (17) and a fourth control valve (18), and the third control valve (17) is arranged above the fourth control valve (18).

5. A balanced foam proportioning device according to claim 1, characterized in that: Liquid level sensors are provided at the top and bottom of the mixing box (4), and the liquid level sensors are electrically connected to the control panel (2).

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