Water turbine for mechanical pumping type proportional mixing device

Abstract

The utility model belongs to the technical field of mixing devices, and particularly relates to a water turbine for a mechanical pumping type proportional mixing device, which comprises a shell, a first rotating shaft is rotatably mounted in the shell in a penetrating manner, an impeller is arranged on the outer wall of the first rotating shaft, and a first water outlet pipe is fixed at the bottom of the shell; a second water outlet pipe is fixedly arranged on one side of the shell in a penetrating mode, the other end of the second water outlet pipe communicates with one side of the top of the first water outlet pipe, a first spiral gear is arranged on the outer wall of the first rotating shaft and located below the shell, and a second rotating shaft is rotationally installed on one side of the interior of the first water outlet pipe in a penetrating mode; a stirring auger is arranged on the outer wall of the second rotating shaft and located in the first water outlet pipe, and a second spiral gear meshed with the first spiral gear is arranged on the outer wall of the second rotating shaft. According to the device, foam liquid and fire fighting water can be stirred and mixed twice, the mixing effect is good, the quality of mixed liquid is improved, and then the fire extinguishing performance of the device is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of mixing devices, and particularly relates to a water turbine for a mechanical pumping type proportional mixing device. Background Art

[0002] The mechanical pumping type foam proportional mixing device is a new type of foam mixing device that replaces the traditional balanced proportional mixing device in the fire protection field. It has the characteristics of low energy consumption, low failure rate, simple operation, and convenient maintenance, and is thus promoted in major new petrochemical projects.

[0003] The sliding vane type water turbine is the core component of the mechanical pumping type foam proportional mixing device. It is driven by hydraulic power to rotate the water turbine, which in turn drives the foam liquid pump to rotate. At this time, the foam pump sucks the foam liquid and transports it into the sliding vane type water turbine, where it is mixed with the water in the sliding vane type water turbine to form a foam mixed liquid.

[0004] However, for the currently used water turbines, the mixing effect of the foam liquid and the fire protection water is relatively poor. The mixing is only carried out by the rotation of the impeller, and the residence time of the foam liquid and the fire protection water in the water turbine is short, so that the foam liquid and the fire protection water cannot be fully and evenly mixed, reducing the quality of the mixed liquid, and thus possibly affecting its performance and effect in fire extinguishing operations. Content of the Utility Model

[0005] The purpose of this utility model is to provide a water turbine for a mechanical pumping type proportional mixing device, which can stir and mix the foam liquid and the fire protection water twice, resulting in a better mixing effect, improving the quality of the mixed liquid, and further enhancing its fire extinguishing performance.

[0006] The technical solution adopted by this utility model is specifically as follows:

[0007] A water turbine for a mechanical pumping type proportional mixing device includes a housing. A first rotating shaft is rotatably installed through the interior of the housing. An impeller is provided on the outer wall of the first rotating shaft. A first water outlet pipe is fixed to the bottom of the housing. A second water outlet pipe is fixedly provided in a penetrating manner on one side of the housing, and the other end of the second water outlet pipe is communicated with one side of the top of the first water outlet pipe. A first spiral gear is provided on the outer wall of the first rotating shaft and below the housing. A second rotating shaft is rotatably installed through one side of the interior of the first water outlet pipe. A stirring auger is provided on the outer wall of the second rotating shaft and within the first water outlet pipe. A second spiral gear that meshes with the first spiral gear is provided on the outer wall of the second rotating shaft. A foam feeding assembly is provided on the top of the housing.

[0008] Further, the foam feeding assembly includes two mounting plates fixed to the top of the housing. A detachable foam pump is arranged between the outer walls of the two mounting plates. The input end of the foam pump is connected to the top end of the first rotating shaft through a coupling. A foam liquid outlet pipe is arranged at the outlet of the foam pump, and a foam liquid inlet pipe is arranged at the inlet of the foam pump.

[0009] Further, a water inlet pipe is arranged on one side of the housing, and one end of the foam liquid outlet pipe is communicated with one side of the top of the water inlet pipe.

[0010] Further, the installation positions of the water inlet pipe and the second water outlet pipe are centrosymmetric about the center point of the housing.

[0011] Further, a protective cover is arranged at the bottom of the housing, and the first spiral gear and the second spiral gear are located in the protective cover.

[0012] Further, a check valve is arranged inside the foam liquid outlet pipe.

[0013] The technical effects obtained by this utility model are as follows:

[0014] For the hydraulic turbine of the mechanical pump-in type proportional mixing device of this utility model, the provided stirring auger, after the foam liquid and the fire-fighting water enter the housing for the first mixing, then drives the first rotating shaft to rotate through the impeller, and cooperates with the first spiral gear and the second spiral gear to make the stirring auger on the second rotating shaft rotate, so as to perform secondary stirring on the mixed liquid entering the first water outlet pipe, making the mixing effect of the foam liquid and the fire-fighting water better, improving the quality of the mixed liquid, and further improving its fire extinguishing performance; the integrated structure design of the housing and the foam pump greatly reduces the overall volume and is convenient for the transportation of the equipment. Brief Description of the Drawings

[0015] Figure 1 is the front three-dimensional structure schematic diagram of this utility model;

[0016] Figure 2 is the side three-dimensional structure schematic diagram of this utility model;

[0017] Figure 3 is the partial sectional structure schematic diagram of this utility model.

[0018] In the drawings, the list of components represented by each reference numeral is as follows:

[0019] 1. Housing; 2. First rotating shaft; 3. Impeller; 4. First water outlet pipe; 5. Second water outlet pipe; 6. First spiral gear; 7. Second rotating shaft; 8. Second spiral gear; 9. Stirring auger; 10. Protective cover; 11. Foam pump; 12. Foam liquid inlet pipe; 13. Foam liquid outlet pipe; 14. Water inlet pipe. Detailed Description of the Embodiments

[0020] For the purpose and advantages of this utility model to be more clearly understood, the following specifically describes this utility model in combination with embodiments. It should be understood that the following text only describes one or several specific implementation manners of this utility model, and does not strictly limit the scope of protection of the specific claims of this utility model.

[0021] As Figures 1 - 3 shown, the water turbine for a mechanical pumping type proportional mixing device includes a housing 1. A first rotating shaft 2 is rotatably installed through the interior of the housing 1. An impeller 3 is provided on the outer wall of the first rotating shaft 2, which can perform the first stirring on the fire water and foam entering the housing 1. A first water outlet pipe 4 is fixed at the bottom of the housing 1. A second water outlet pipe 5 is fixedly installed through one side of the housing 1. The other end of the second water outlet pipe 5 is communicated with one side of the top of the first water outlet pipe 4. A first helical gear 6 is provided on the outer wall of the first rotating shaft 2 and below the housing 1. A second rotating shaft 7 is rotatably installed through one side of the interior of the first water outlet pipe 4. A stirring auger 9 is provided on the outer wall of the second rotating shaft 7 and inside the first water outlet pipe 4. A second helical gear 8 meshing with the first helical gear 6 is provided on the outer wall of the second rotating shaft 7. A foam feeding assembly is provided at the top of the housing 1. The structure is simple and the operation is convenient. The rotation of the impeller 3 drives the first rotating shaft 2 to rotate. The first rotating shaft 2 drives the first helical gear 6 to rotate. The first helical gear 6 drives the second helical gear 8 to rotate. The second helical gear 8 drives the second rotating shaft 7 to rotate. The second rotating shaft 7 drives the stirring auger 9 inside the first water outlet pipe 4 to rotate, which can perform the second stirring on the mixed liquid of fire water and foam to make it fully and evenly mixed. A water inlet pipe 14 is provided on one side of the housing 1. One end of the foam liquid outlet pipe 13 is communicated with one side of the top of the water inlet pipe 14, so that the foam and the fire water can enter the housing 1 for mixing. The installation position of the water inlet pipe 14 and the installation position of the second water outlet pipe 5 are centrosymmetric about the center point of the housing 1, making the equipment more perfect and connecting the external fire water source to the water inlet pipe 14.

[0022] As Figures 1 - 3 shown, the foam feeding assembly includes two mounting plates fixed at the top of the housing 1. A detachable foam pump 11 is provided between the outer walls of the two mounting plates. The input end of the foam pump 11 is connected to the top end of the first rotating shaft 2 through a coupling. A foam liquid outlet pipe 13 is provided at the discharge port of the foam pump 11. A foam liquid inlet pipe 12 is provided at the feed port of the foam pump 11. The rotation of the impeller 3 drives the first rotating shaft 2 to rotate. The first rotating shaft 2 drives the input end of the foam pump 11 to rotate, enabling the foam pump 11 to work properly, so that the foam can be automatically added to the water inlet pipe 14 for subsequent mixing. A check valve is provided inside the foam liquid outlet pipe 13 to prevent the fire water from entering the foam pump 11, enabling the foam to be normally mixed with the fire water.

[0023] As Figures 1 - 3As shown, a protective cover 10 is provided at the bottom of the housing 1, and the first helical gear 6 and the second helical gear 8 are located in the protective cover 10, which is convenient for protecting the first helical gear 6 and the second helical gear 8.

[0024] The working principle of this utility model is as follows: When in use, pressurized water is injected into the housing 1 through the water inlet pipe 14, converting the energy of the water into the kinetic energy of the impeller 3. The impeller 3 rotates, driving the first rotating shaft 2 to rotate. The first rotating shaft 2 is connected to the input end of the foam pump 11, starting the foam pump 11 to work properly. Connect the external foam concentrate tank to the foam inlet pipe 12. The foam pump 11 adds the foam concentrate into the water inlet pipe 14 through the foam outlet pipe 13. The pressurized water and the foam outlet enter the housing 1 and are stirred and mixed by the rotation of the impeller 3, and then enter the first water outlet pipe 4 from the second water outlet pipe 5. At the same time, the first rotating shaft 2 drives the first helical gear 6 to rotate, the first helical gear 6 drives the second rotating shaft 7 on the first helical gear 6 to rotate, and the second rotating shaft 7 drives the stirring auger 9 to rotate, performing secondary mixing and stirring on the pressurized water and the foam concentrate, and finally discharging.

[0025] The above are only the preferred embodiments of this utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of this utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of this utility model. The structures, devices, and operation methods not specifically described and explained in this utility model, without special instructions and limitations, are implemented according to the conventional means in the art.

Claims

1. A mechanical pump-in type proportional mixing device using a water turbine, characterized in that: The invention comprises a shell (1), wherein a first rotating shaft (2) is rotatably installed inside the shell (1), an outer wall of the first rotating shaft (2) is provided with an impeller (3), a first water outlet pipe (4) is fixed at the bottom of the shell (1), a second water outlet pipe (5) is fixedly provided through one side of the shell (1), the other end of the second water outlet pipe (5) is connected with one side of the top of the first water outlet pipe (4), a first helical gear (6) is provided on the outer wall of the first rotating shaft (2) and located below the shell (1), a second rotating shaft (7) is rotatably installed on one side of the inside of the first water outlet pipe (4), a stirring auger (9) is provided on the outer wall of the second rotating shaft (7) and located inside the first water outlet pipe (4), a second helical gear (8) meshing with the first helical gear (6) is provided on the outer wall of the second rotating shaft (7), and a foam feeding assembly is provided on the top of the shell (1).

2. The water turbine for a mechanical pump-in type proportional mixing device according to claim 1, characterized in that: The foam feed assembly comprises two mounting plates fixed on the top of a shell (1), a detachable foam pump (11) is arranged between the outer walls of the two mounting plates, the input end of the foam pump (11) is connected to the top end of the first rotating shaft (2) via a coupling, the discharge port of the foam pump (11) is provided with a foam liquid outlet pipe (13), and the feed port of the foam pump (11) is provided with a foam liquid inlet pipe (12).

3. The water turbine for a mechanical pump-in type proportional mixing device according to claim 2, characterized in that: A water inlet pipe (14) is provided on one side of the shell (1), and one end of the foam liquid outlet pipe (13) is connected to one side of the top of the water inlet pipe (14).

4. The water turbine for a mechanical pump-in type proportional mixing device according to claim 3, characterized in that: The installation position of the water inlet pipe (14) and the installation position of the second water outlet pipe (5) are symmetrical about the center of the center point of the shell (1).

5. The water turbine for a mechanical pump-in type proportional mixing device according to claim 1, characterized in that: A protective cover (10) is provided at the bottom of the housing (1), and the first helical gear (6) and the second helical gear (8) are located in the protective cover (10).

6. The water turbine for a mechanical pump-in type proportional mixing device according to claim 2, characterized in that: A one-way valve is arranged inside the foam liquid outlet pipe (13).

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