CN210403914U

CN210403914U - Sedimentary microbial fuel cell capable of utilizing wind power

Info

Publication number: CN210403914U
Application number: CN201921516456.8U
Authority: CN
Inventors: 吴卿; 焦士埔; 马梦醒; 彭森
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-04-24
Anticipated expiration: 2029-09-12

Abstract

The utility model discloses a sedimentary microbial fuel cell capable of utilizing wind power, which comprises a cathode and an anode which are communicated through a lead, wherein the cathode is positioned in a floating plate frame through a cathode shaft which is rotationally connected on the floating plate frame; one end of the cathode shaft penetrates into a hollow sleeve rod fixed on the floating plate frame, a vertical shaft is sleeved in the sleeve rod, and the bottom end of the vertical shaft and the cathode shaft rotate in a matched mode through a first bevel gear set; a transverse shaft penetrates through the top of the loop bar, and the part of the transverse shaft positioned in the loop bar is matched with the top end of the vertical shaft to rotate through a second bevel gear set; one end of the transverse shaft is fixedly provided with a windmill. The utility model aims at providing a need not carry out the aeration to the water, the rotatory microbial fuel cell that improves the performance of usable wind-force drive battery's negative pole.

Description

Sedimentary microbial fuel cell capable of utilizing wind power

Technical Field

The utility model relates to a microbial fuel cell field especially relates to a sedimentary type microbial fuel cell of usable wind-force.

Background

Microbial fuel cells are an emerging bioelectrochemical technology that can degrade organic matter and generate electrical energy under mild and clean reaction conditions. The microbial fuel cell has wide application prospect in the aspects of energy production, waste treatment, nutrient recovery and the like, and the sedimentary microbial fuel cell is one of the microbial fuel cells and generally consists of an anode buried in sediment and a cathode submerged under water or floating on the water surface. Sedimentary microbial fuel cells have been used in practice in various ways as a reliable power source in remote areas, for example to power wireless sensors. In addition, the sedimentary microbial fuel cell can control the sediment pollution of water bodies such as rivers, lakes and the like. For example, degrading organic matter in the deposit, fixing phosphorus in the deposit, etc.

However, when used for a long period of time, the performance of the sedimentary microbial fuel cell is still low, and further improvement is required. The cathode of a sedimentary microbial fuel cell is submerged in overlying water and the cathode half-cell reaction becomes the primary limiting factor in power generation due to limitations in oxygen availability and mass transfer losses. To increase power output, the overburden water can be aerated to increase oxygen content, but this approach increases the consumption of electrical energy and is not economical in the end result. The rotary cathode can solve the problem of low content of dissolved oxygen in overlying water to a certain extent, and researches show that under the condition of cathode rotation, the power output can be three times of that of a static non-rotary cathode due to higher electron transfer rate and oxygen diffusion rate. In addition, the rotating cathode facilitates the removal of both carbon and nitrogen. However, what kind of method should be used to drive the cathode to rotate brings new problems, and the research in the laboratory mostly uses the motor to drive the cathode to rotate, and although the performance of the sedimentation type microbial fuel cell can be improved, the electric energy is consumed and the investment cost is increased, which is not beneficial to the practical application. Wind power is an energy source widely existing in nature, is easy to capture, and can directly drive the cathode to rotate through the wind power under natural conditions, so that the investment cost of the energy converter and the motor can be saved. Therefore, a deposition type microbial fuel cell which can drive the cathode to rotate by wind power is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and aims to provide a microbial fuel cell which does not need to aerate the water body and can improve the performance by utilizing the rotation of the cathode of a wind-driven battery.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a sedimentary microbial fuel cell capable of utilizing wind power comprises a cathode and an anode which are communicated through a lead, wherein the cathode is positioned in a floating plate frame through a cathode shaft which is rotatably connected to the floating plate frame; one end of the cathode shaft penetrates into a hollow sleeve rod fixed on the floating plate frame, a vertical shaft is sleeved in the sleeve rod, and the bottom end of the vertical shaft and the cathode shaft rotate in a matched mode through a first bevel gear set; a transverse shaft penetrates through the top of the loop bar, and the part of the transverse shaft positioned in the loop bar is matched with the top end of the vertical shaft to rotate through a second bevel gear set; one end of the transverse shaft is fixedly provided with a windmill.

Furthermore, a gear which rotates transversely in the first bevel gear set is fixed at the bottom end of the vertical shaft, and a gear which rotates vertically in the first bevel gear set is fixed at the end part of the cathode shaft penetrating into the loop bar; and a gear transversely rotating in the second bevel gear set is fixed at the top end of the vertical shaft, and a gear vertically rotating in the second bevel gear set is sleeved on a transverse shaft positioned in the loop bar.

Further, the windmill has three blades.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses make full use of the wind-force that extensively exists under the natural condition, drive the rotation of negative pole, improved the power of deposit type microbial fuel cell output on the one hand, on the other hand build and the running cost is also lower, but entire system self-sustaining, through peripheral hardware battery or consumer available battery power supply promptly, the management is simple. Additional electric energy input is not needed, negative effects on the environment are not generated, and the operation sustainability is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the middle stem of the present invention;

fig. 3 is a schematic structural diagram of an embodiment of the present invention.

Description of reference numerals:

1-horizontal shaft, 2-windmill, 3-loop bar, 4-floating plate frame, 5-cathode, 6-cathode shaft, 7-vertical shaft, 8-first bevel gear set, 9-second bevel gear set, 10-accumulator, 11-lead, 12-anode and 13-water-coated.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and 2, a sedimentary microbial fuel cell capable of utilizing wind power comprises a cathode 5 and an anode 12 which are communicated through a lead 11, wherein the cathode 5 is positioned in a floating plate frame 4 through a cathode shaft 6 which is rotatably connected to the floating plate frame 4; one end of the cathode shaft 6 penetrates into a hollow sleeve rod 3 fixed on the floating plate frame 4, a vertical shaft 7 is sleeved in the sleeve rod 3, and the bottom end of the vertical shaft 7 is matched with the cathode shaft 6 to rotate through a first bevel gear set 8; a cross shaft 1 penetrates through the top of the loop bar 3, and the portion of the cross shaft 1 positioned in the loop bar 3 is matched with the top end of a vertical shaft 7 to rotate through a second bevel gear set 9; one end of the transverse shaft 1 is fixedly provided with a windmill 2; a transverse rotating gear in the first bevel gear set 8 is fixed at the bottom end of the vertical shaft 7, and a vertical rotating gear in the first bevel gear set 8 is fixed at the end part of the cathode shaft 6 penetrating into the loop bar 3; the transverse rotating gear in the second bevel gear set 9 is fixed at the top end of the vertical shaft 7, the vertical rotating gear in the second bevel gear set 9 is sleeved on the transverse shaft 1 in the loop bar 3, and two gears in the first bevel gear set 8 and the second bevel gear set 9 are meshed with each other; the windmill 2 has three blades in total.

As shown in figure 3, the anode 12 of the utility model is buried in the bottom mud of the field water body when in use, the cathode 5 is positioned in the floating plate frame 4, and half of the buoyancy force passing through the floating plate frame 4 is immersed in the upper cover water 13 and half is exposed in the air. The windmill 2 is driven by natural wind to rotate to drive the transverse shaft 1 to rotate, and then the vertical rotating gear in the second bevel gear set 9 sleeved on the transverse shaft 1 in the loop bar 3 drives the transverse rotating gears fixed at two ends of the vertical shaft 7 to rotate. And the gear which transversely rotates in the first bevel gear set 8 at the bottom end of the vertical shaft 7 drives the gear which vertically rotates in the first bevel gear set 8 matched with the cathode shaft 6 to rotate, so that the windmill 2 drives the cathode 5 to rotate on the water surface by wind power. The cathode 5 is in full contact with water and air, the output power of the sedimentation type microbial fuel cell is improved, the microbes at the anode 12 decompose organic matters in the substrate sludge, generated electrons are transferred to the cathode 5 through an external circuit, hydrogen ions are diffused to the cathode 5 through the overlying water, and oxygen at the cathode 5 is used as an electron acceptor, so that electric energy is generated. And the electric energy generated by the sedimentation type microbial fuel cell is collected by storing electricity by using the storage battery 10 connected with the cathode 5 and the anode 12, respectively. The utility model discloses when open-air water uses, also can be for the wireless sensor in remote area, or open-air electrical apparatus power supply with the electrical apparatus.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sedimentary microbial fuel cell capable of utilizing wind power, which comprises a cathode and an anode communicated with each other through a conducting wire, and is characterized in that: the cathode is positioned in the floating plate frame through a cathode shaft which is rotatably connected to the floating plate frame; one end of the cathode shaft penetrates into a hollow sleeve rod fixed on the floating plate frame, a vertical shaft is sleeved in the sleeve rod, and the bottom end of the vertical shaft and the cathode shaft rotate in a matched mode through a first bevel gear set; a transverse shaft penetrates through the top of the loop bar, and the part of the transverse shaft positioned in the loop bar is matched with the top end of the vertical shaft to rotate through a second bevel gear set; one end of the transverse shaft is fixedly provided with a windmill.

2. The sedimentary microbial fuel cell according to claim 1, wherein: a gear which rotates transversely in the first bevel gear set is fixed at the bottom end of the vertical shaft, and a gear which rotates vertically in the first bevel gear set is fixed at the end part of the cathode shaft penetrating into the loop bar; and a gear transversely rotating in the second bevel gear set is fixed at the top end of the vertical shaft, and a gear vertically rotating in the second bevel gear set is sleeved on a transverse shaft positioned in the loop bar.

3. The sedimentary microbial fuel cell according to claim 1, wherein: the windmill has three blades.