CN203577655U - Circulating microbubble generation device - Google Patents

Abstract

The utility model discloses a circulating microbubble generating device, which comprises a microbubble generating chamber, a Venturi tube microbubble generator, a pressure chamber and a circulation pipeline; Channel, the microbubble generating chamber is connected to the pool through the water pump, and the pressure chamber is connected to the irrigation main pipe; the Venturi tube microbubble generator is set in the microbubble generating chamber and communicated with the air pump through the air pipe, and the circulation pipeline is provided with a front valve, and the irrigation The main pipe is provided with a rear valve, and the microbubble generation chamber and the pressure chamber are respectively provided with a front pressure gauge and a rear pressure gauge. The utility model has simple structure, obvious microbubble oxygenation effect, and can be powered by photovoltaic-wind power generation equipment, which is environmentally friendly and energy-saving. The defects of low system efficiency and high energy consumption can also be used for oxygenation stations in polluted water bodies to accelerate the degradation of harmful substances.

Description

A circulating microbubble generating device

technical field

The utility model belongs to the technical field of new high-efficiency water-saving irrigation machinery, in particular to a circulating microbubble generating device applying hydraulic principles and clean energy.

Background technique

The new technology of aerobic irrigation is a low-fertilization, low-pollution, high-quality, high-yield, environmentally friendly and energy-saving new irrigation technology to solve the problem of anoxic stress caused by the contradiction between water and oxygen in the rhizosphere of crops under conventional irrigation. Its potential for increasing production Larger, according to the experimental results of the scientific research group, it is generally known that the production can be increased by 10%-20%, but because the saturated solubility of oxygen in water is very small, to make the oxygen in the water supersaturated, then it is necessary to make the oxygen in a large amount of very small Bubbles exist in irrigation water, and the smaller the bubbles, the longer they stay in the water, the more they can meet the needs of oxygenated irrigation, and it can also break through the application of oxygenated irrigation that is only limited to facility agriculture.

At present, there is an ultra-microbubble oxygenation device designed based on the principle of pressure mutation, reducing the bubble diameter and increasing the oxygen absorption rate. However, due to the cumbersome structure of the device, the installation is difficult, the price is high, the market promotion is slow, and it is not easy to carry and other shortcomings. , has not been promoted. There is a micro-nano bubble generating device that uses underwater aeration stones to rotate at high speed, which is mainly used to remove suspended solids in water, gelatinous substances and oil-water separation. Foreign microbubble generators include the Flotaire microbubble generator in the United States, the Cesl microbubble generator in Canada and the ultrasonic aerosol microbubble generator, etc., which are generally expensive and inconvenient to maintain.

Utility model content

The technical purpose of the utility model is to provide a small volume, low cost, simple operation, wide application range, green and pollution-free circulating microbubble generating device.

The technical solution adopted by the circulating microbubble generating device provided by the utility model includes a microbubble generating chamber 1, a pressure chamber 5, a circulation pipeline 10 and a Venturi tube microbubble generator 2; the microbubble generating chamber 1, the pressure chamber 5 and the circulation pipeline 10 are connected end to end in order to form an annular passage, wherein the microbubble generation chamber 1 is connected to the water pool 17 through the water pump 16, and the pressure chamber 5 is connected to the irrigation main pipe 7; the Venturi tube microbubble generator 2 It is arranged in the microbubble generation chamber 1 and communicates with the air pump 11 through the trachea. The circulation pipeline 10 is provided with a front valve 14, and the irrigation main pipe 7 is provided with a rear valve 8. The microbubble generation chamber 1 and The pressure chamber 5 is provided with a front pressure gauge 15 and a rear pressure gauge 9 respectively.

The pressure chamber 5 is provided with a mechanical rotating microbubble generating device.

The mechanical rotating microbubble generating device is an impeller 4 driven by a motor 6, and the impeller shaft of the impeller 4 is connected to the output shaft of the motor 6 through a coupling 20

The microbubble generating chamber 1 and the pressure chamber 5 are connected through a nozzle 19 , and the impeller 4 is arranged facing the nozzle 19 .

In the present utility model, the Venturi tube microbubble generator 2 is a conical shell, the top of the cone faces the direction of water flow, and the bottom of the cone of the Venturi tube microbubble generator 2 is in contact with the baffle provided in the microbubble generating chamber. The plate 23 is fixedly connected, and is coaxially arranged with the microbubble generation cavity 1; the inside of the Venturi tube microbubble generator 2 is communicated with the air pipe 3 of the air pump 11, and its cone top is provided with an air inlet 21, so The tapered wall of the Venturi tube microbubble generator 2 and the inner wall of the microbubble generating chamber 1 form a gradually narrowing annular water passage, and a water hole 24 is provided on the baffle plate 23 at the narrowest part of the water passage.

The baffle plate 23 is provided with an air filling hole 22 to communicate with the inside of the Venturi tube microbubble generator 2 and the microbubble generating chamber 1 .

The water holes 24 are evenly arranged along the outer edge of the bottom of the cone wall of the Venturi tube microbubble generator 2 .

In the utility model, the power of the circulating microbubble generating device is driven by photovoltaic power generation equipment 12 and/or wind power generation equipment 13, and the utility model is driven by the complementarity of photovoltaic power generation and wind power generation.

The utility model uses a Venturi tube microbubble generator to perform high-pressure aeration on the water flow entering the microbubble generating chamber, and then further miniaturizes the bubbles in the water flow through the impeller stirring in the pressure chamber, and re-enters the microbubble through the circulation pipeline. The generation chamber is repeatedly aerated until the pressure in the pressure chamber reaches the pressure value at the peak of the oxygen volume content in the water, and the main irrigation pipe is opened to irrigate the water flow in the pressure chamber, so that if the aeration effect cannot reach the oxygen addition When irrigation is required, microbubbles are generated through circulation to meet irrigation requirements.

The utility model adopts the photovoltaic-wind energy generating equipment as the power driving energy, the energy is environment-friendly, and the environmental pollution in the irrigation process is reduced.

From the above, the utility model has the advantages of simple structure, obvious microbubble oxygenation effect, environmental protection and energy saving. Oxygen can effectively solve the problems of low efficiency and high energy consumption in the current fish farming oxygen supply system. It can also be used in oxygenation stations for polluted water bodies, which can accelerate the degradation of harmful substances.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the circulating microbubble generating device involved in the present invention.

Fig. 2 is a schematic diagram of a Venturi tube microbubble generator.

Figure 3 is a schematic diagram of the opening of the baffle.

Fig. 4 is a schematic diagram of microbubble generating circulation pipeline in the present invention.

Labels in the figure: 1-microbubble generating chamber, 2-venturi tube microbubble generator, 3-breather pipe, 4-impeller, 5-pressure chamber, 6-electric motor, 7-irrigation main pipe, 8-back valve, 9-rear pressure gauge, 10-circulation pipeline, 11-gas pump, 12-photovoltaic power generation equipment, 13-wind power generation equipment, 14-front valve, 15-front pressure gauge, 16-water pump, 17-pool, 18-inlet Water pipe, 19-nozzle, 20-coupling, 21-air intake hole, 22-air supply hole, 23-baffle plate, 24-water passage hole.

Detailed ways

Example

Referring to Fig. 1 and Fig. 4, the circulating microbubble generating device in the diagram includes a microbubble generating chamber 1, a pressure chamber 5, a circulation pipeline 10 and a Venturi tube microbubble generator 2; the microbubble generating chamber 1, the pressure chamber 5 And the circulating pipeline 10 is connected from end to end in order to form an annular channel, wherein the microbubble generation chamber 1 communicates with the pool 17 through the water inlet pipe 18 and the water pump 16, and the pressure chamber 5 communicates with the main irrigation pipe 7; the Venturi tube microbubble generator 2 is arranged in the micro bubble generation chamber 1 and communicate with air pump 11 through vent pipe 3, circulation pipe 10 is provided with front valve 14, irrigation main pipe 7 is provided with rear valve 8, microbubble generation chamber 1 and pressure chamber 5 are respectively provided with front The pressure gauge 15 and the rear pressure gauge 9, wherein the front pressure gauge 15 is located at the junction where the microbubble generation chamber is connected to the water inlet pipe.

In the utility model, a mechanical rotating microbubble generating device is also provided in the pressure chamber 5 to further miniaturize the bubbles in the water flow coming from the microbubble generating chamber. The impeller 4 is driven, and the impeller 4 is facing the nozzle 19 communicating with the microbubble generation chamber 1 and the pressure chamber 5 .

Referring specifically to Fig. 2 and Fig. 3, the Venturi tube microbubble generator 2 is a conical shell, the top of the cone faces the direction of water flow, the bottom of the cone of the Venturi tube microbubble generator 2 and the baffle plate 23 arranged in the microbubble generating chamber It is fixedly connected and arranged coaxially with the microbubble generating chamber 1; the inside of the Venturi tube microbubble generator 2 is connected with the air pipe 3 of the gas filling pump 11, and the cone top is provided with an air inlet 21, and the Venturi tube microbubble generator The cone wall 2 and the inner wall of the microbubble generation chamber 1 form a gradually narrowing annular water passage, and a water hole 24 is provided on the baffle plate 23 at the narrowest part of the water passage. The baffle 23 is provided with an air supply hole 22 to communicate with the inside of the Venturi tube microbubble generator 2 and the microbubble generating chamber 1 . The water holes 24 and the air supply holes 22 are evenly arranged along the outer edge and the inner edge of the cone wall bottom of the Venturi tube microbubble generator 2 respectively.

In the utility model, the water pump 16, the air pump 11 and the motor 6 use the photovoltaic power generation equipment 12 and the wind energy power generation equipment 13 to drive the power plant complementary, and the storage battery is charged by two kinds of clean energy power generation, and then the above-mentioned equipment that needs electric energy in this device Energy supply, environmental protection and energy saving.

Taking oxygen irrigation as an example, before starting the whole device, the front valve 14 and the rear valve 8 are closed. Through the water pump 16, the water flow has a certain flow rate v0 before passing through the Venturi tube microbubble generator 2. When the water flow passes through the annular water passage between the venturi tube microbubble generator 2 cone wall and the microbubble generation chamber inner wall , due to the continuous decrease of the cross-flow section, the flow rate increases accordingly, and the gas filling pump 11 carries out high-pressure aeration to the water flow in the microbubble generation chamber through the air inlet hole 21. When the water flow reaches the cone bottom of the Venturi tube microbubble generator 2 , the flow surface becomes eight water holes 24 evenly distributed on the baffle plate 23, and the aperture is only 1/15 of the diameter of the entire microbubble generation cavity. According to the continuity equation, the flow velocity through the water holes 24 should be 152/8 v0, which is 28.125 v0. The faster the flow rate of the water flow, the better the aeration effect, and in the middle of the high-speed water flow, that is, through the eight air supply holes 22 evenly distributed on the baffle plate 23 for high-pressure air supply, the high-speed water flows collide violently with each other, violent vortex and other hydraulic phenomena , so that the gas mixed into the water exists in a large amount in the form of tiny bubbles. Immediately afterwards, the aerated water flow from the microbubble generation chamber is sprayed into the pressure chamber 5 through the nozzle 19 with tapered diameter, and the water flow is directly directed to the impeller 4 driven by the motor, so that the air bubbles in the aerated water flow are miniaturized. When the reading of the rear pressure gauge 9 on the pressure chamber 5 was greater than the reading of the front pressure gauge 15, the front valve 14 was opened, so that the water in the pressure chamber re-entered the microbubble generation chamber through the circulation pipeline 10 to circulate, and when the rear pressure gauge 9 When the reading is about 120KPa greater than the reading of front pressure gauge 15, the oxygen volume content in the water is about 12% this moment, reaches the requirement of oxygenation irrigation, can open rear valve 8 at this moment, and irrigates.

Claims (8)

1. A circulating microbubble generating device, characterized in that it includes a microbubble generating chamber (1), a pressure chamber (5), a circulation pipeline (10) and a Venturi tube microbubble generator (2); the microbubble generating chamber (1), the pressure chamber (5) and the circulation pipeline (10) are sequentially connected end to end to form an annular channel, wherein the microbubble generation chamber (1) is connected to the water pool (17) through the water pump (16), and the pressure chamber (5 ) communicates with the main irrigation pipe (7); the Venturi tube microbubble generator (2) is set in the microbubble generating chamber (1) and communicates with the air pump (11) through the trachea, and the circulation pipeline (10) A front valve (14) is provided on the top, a rear valve (8) is provided on the irrigation main pipe (7), and a front pressure gauge (15) is respectively provided in the microbubble generation chamber (1) and the pressure chamber (5) and rear pressure gauge (9). the 2. The circulating microbubble generating device according to claim 1, characterized in that: the pressure chamber (5) is provided with a mechanically rotating microbubble generating device. the 3. The circulating microbubble generating device according to claim 2, characterized in that: the mechanically rotating microbubble generating device is an impeller (4) driven by a motor (6), and the impeller shaft of the impeller (4) passes through The coupling (20) is connected to the output shaft of the electric motor (6). the 4. The circulating microbubble generating device according to claim 3, characterized in that: the microbubble generating chamber (1) and the pressure chamber (5) are connected through a nozzle (19), and the impeller (4) is facing The nozzle (19) is set. the 5. The circulating microbubble generating device according to claim 1, characterized in that: the Venturi tube microbubble generator (2) is a conical shell, the top of the cone faces the direction of water flow, and the Venturi tube microbubble generator The cone bottom of the generator (2) is fixedly connected with the baffle plate (23) set in the microbubble generating chamber, and is arranged coaxially with the microbubble generating chamber (1); the Venturi tube microbubble generator (2 ) communicates with the vent pipe (3) of the gas filling pump (11), and its conical top is provided with an air inlet (21). The inner wall forms a gradually narrowing annular water passage, and the baffle (23) at the narrowest part of the water passage is provided with a water hole (24). the 6. The circulating microbubble generating device according to claim 5, characterized in that: the baffle (23) is provided with an air supply hole (22) connected to the inside of the Venturi tube microbubble generator (2) and the microbubble generator Cavity (1). the 7. The circulating microbubble generating device according to claim 5, characterized in that: the water passage holes (24) are evenly arranged along the outer edge of the bottom of the cone wall of the Venturi tube microbubble generator (2). the 8. The circulating microbubble generating device according to any one of claims 1-7, characterized in that: the power of the circulating microbubble generating device adopts photovoltaic power generation equipment (12) and/or wind power generation equipment (13) drive. the

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