CN113511439A

CN113511439A - Be used for municipal administration kitchen garbage transfer deodorizing device

Info

Publication number: CN113511439A
Application number: CN202110735015.2A
Authority: CN
Inventors: 刘诗筠; 时亚琴; 刘祉燕; 梅丹华; 方志
Original assignee: Nanjing Tech University
Current assignee: Nanjing Tech University
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-10-19
Anticipated expiration: 2041-06-30
Also published as: CN113511439B

Abstract

The invention discloses a transfer deodorization device for municipal kitchen waste, which comprises a garbage can, wherein a can cover is movably arranged at the top of the garbage can through a bolt, a plurality of air outlets are formed in the side wall of the garbage can, a plasma deodorization device is fixedly arranged on the inner wall of the garbage can and communicated with the air outlets through an air duct, the air duct is arranged in an interlayer of the wall of the garbage can, a high-voltage pulse power supply is fixedly arranged at the bottom of the garbage can and electrically connected with the plasma deodorization device through a wire, and the transfer deodorization device has the beneficial effects that: simultaneously, the device has the characteristics of body discharge and surface discharge, can efficiently generate ozone and improve the purification efficiency; meanwhile, the uniformity of plasma generated on the surface is improved, the direct contact between the malodorous gas and the metal electrode is avoided, and the service life of the electrode is prolonged.

Description

Be used for municipal administration kitchen garbage transfer deodorizing device

Technical Field

The invention relates to the technical field of municipal kitchen waste treatment, in particular to a transfer deodorization device for municipal kitchen waste.

Background

In recent years, the nation has increasingly promoted waste classification to classify waste into recyclable waste, kitchen waste and other waste. The kitchen garbage contains high proportion of organic components and complex composition, and comprises pathogenic microorganisms, parasites, heavy metal elements and the like with pathogenicity, and after the kitchen garbage is stacked for a long time, various foul gases can be released. Therefore, the use of municipal kitchen waste bins has been accompanied by various malodorous gases. Even separate rubbish and resident's living area through the sealed mode of bung, prevent that the peculiar smell of rubbish from giving out, when opening the garbage bin once more, the peculiar smell in the garbage bin still can give out to when this kind of garbage bin covers the bung, rubbish and air are isolated in the bucket, and the air does not have the circulation, and peculiar smell aggravation in the bucket, when this can lead to opening the garbage bin once more, the peculiar smell in the bucket is very big, seriously influences peripheral resident's daily life.

In order to suppress the malodor of the trash, attempts have been made to apply the conventional deodorizing means to the trash deodorization, and various technical means have been proposed. According to the difference of deodorization mechanism, these technical means can be divided into two kinds of adsorption and chemical; as described in patents CN110947299A and CN211495488U, the adsorption method is mainly to remove the malodorous gas generated by food and microorganisms by activated carbon or specially developed adsorbent; as the deodorization method disclosed in patent CN111319896A, the chemical method mainly utilizes ozone to treat the odor generated in the garbage can, improving the environmental sanitation;

in addition to conventional deodorization means, research and development personnel have developed various plasma devices applied to the field of environmental treatment in response to the requirement of deodorization.

The plasma is a substance in a fourth state following solid, liquid and gas states, and the system is rich in active ingredients such as high-energy electrons, ions, excited atoms, free radicals and the like, so that the plasma is a novel molecular activation means. At present, the plasma has been widely applied in the aspects of environmental management, material surface treatment, biomedicine, aerospace, food safety and the like.

Environmental management is an important direction for research and practical application of atmospheric pressure low-temperature plasma. The working principle of plasma deodorization is that electrons between a high-voltage electrode and a ground electrode are accelerated under the action of a strong electric field to generate a large amount of high-energy electrons. On one hand, the high-energy electrons collide with the malodorous gas to break chemical bonds of the harmful gas, so that the malodorous gas is directly decomposed into simple substance atoms or harmless molecules; on the other hand, malodorous gases are oxidatively decomposed into harmless products by various active groups and ozone. Compared with the traditional treatment method, the plasma method has wide application range and high purification efficiency, and is particularly suitable for multi-component malodorous gas which is difficult to treat by other methods.

The volume discharge type dielectric barrier discharge device generates discharge plasma in an air gap between a high voltage electrode and a low voltage electrode. The electrode structure is usually a flat plate or a coaxial cylinder structure, plasma is generated in the whole space in the discharge process, the air handling capacity is large, and the discharge starting voltage is high. As shown in the device disclosed in CN111821828A patent, the single electrode is in a bobbin structure, and the high and low electrodes are in direct contact to form a plasma reactor. The plasma reactors are arranged in a filling mode, and the distance and the position between the electrodes are controlled, so that the generated plasma is almost filled in the whole discharge space.

The discharge electrode of the surface type dielectric barrier discharge device is tightly attached to the surface of an insulating medium, and plasma develops along the surface of the medium, so that the chemical reaction of the plasma only occurs near the surface of the medium, and the processing capacity of gas is influenced. As shown in the apparatus disclosed in the CN109107378A patent, a plurality of SDBD plasma modules are employed so that the control gas is closely attached to the surface of the SDBD electrode, thereby ensuring the treatment effect even when the SDBD plasma modules are under high-speed gas flow.

With the current state of the art, the following drawbacks prevail:

1. although the diffusion of malodorous gas is inhibited to a certain extent by traditional technical means such as an activated carbon adsorbent, the adsorption material needs to be replaced regularly, the adsorption material is generally placed at the top of the garbage can, malodorous gas is more easily generated at the bottom of the garbage can, and a certain difference exists between the adsorption material and the garbage can when the odor is completely deodorized;

2. the existing plasma deodorization device realizes the body discharge and the surface discharge by changing the arrangement mode of electrodes through arrangement, and the electrodes of the plasma deodorization device do not have the body discharge and the surface discharge;

3. the plasma treatment of the malodorous gas mainly utilizes the generated active particles to act with the malodorous gas, the existing plasma has two-step reaction, and the generated plasma is mixed with the malodorous gas, and the purification efficiency is not high because the active particles have short service life;

4. the electrode of the plasma device is exposed on the surface and directly contacted with the malodorous gas, so that the plasma device is easy to corrode, and the service life of the plasma device is greatly reduced;

5. the electrode structure is complicated, the device volume is large, and the cost is high.

Disclosure of Invention

The invention aims to provide a transfer deodorization device for municipal kitchen waste, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a be used for municipal kitchen garbage transfer deodorizing device, includes the garbage bin, there is the bung at the top of garbage bin through bolt movable mounting, several air outlets have been seted up on the lateral wall of garbage bin, fixed mounting has plasma deodorizing device on the inner wall of garbage bin, plasma deodorizing device is linked together through wind channel and air outlet, the wind channel sets up in the intermediate layer of garbage bin bucket wall, the bottom fixed mounting of garbage bin has high-voltage pulse power, high-voltage pulse power passes through wire electric connection plasma deodorizing device, plasma deodorizing device includes shell, smell sensor, fan, fixed plate, plasma reactor module, smell sensor and fan fixed mounting are on the inner wall of shell, fixed mounting has plasma reactor module on the fixed plate, fixed plate fixed mounting and the inside of shell, the shell is also provided with an air inlet and an air outlet.

As a further scheme of the invention: the inner wall of garbage bin is provided with the mounting groove, the mounting groove is used for installing plasma deodorizing device, the air intake is with the inner wall parallel and level of garbage bin, the air exit is linked together with the wind channel, the fan is located between odor sensor and the fixed plate.

As a further scheme of the invention: the odor sensor is specifically a sulfide gas sensor, the sulfide gas including hydrogen sulfide, carbon disulfide, methyl mercaptan, methyl sulfide, and dimethyl disulfide.

As a further scheme of the invention: the plasma reactor module comprises a dielectric layer and a metal layer, wherein the dielectric layer is provided with a discharge hole, the metal layer is provided with a metal hole, the metal layer is divided into a high-voltage electrode layer and a low-voltage electrode layer, the metal layer is arranged in the dielectric layer and is not lower than three layers, the circle center between the metal hole and the discharge hole is coaxially arranged, the diameter of the metal hole is larger than that of the discharge hole, and the diameter of the metal hole is 0.1-1 mm.

As a further scheme of the invention: the number of the discharge holes and the number of the metal holes are multiple, the distance between two circle centers of any two adjacent discharge holes in the horizontal direction is 1cm-3cm, and the distance between two circle centers of any two adjacent discharge holes in the vertical direction is 1cm-2.5 cm.

As a further scheme of the invention: the distance between the high-voltage electrode layer and the low-voltage electrode layer is 0.5cm-5 cm.

Compared with the prior art, the invention has the beneficial effects that:

1. the plasma micropore discharge structure is adopted, so that active substances in the plasma can be diffused along with the airflow, the characteristics of body discharge and surface discharge are realized, ozone can be efficiently generated, and the ozone decomposes the sulfide gas through oxidation-reduction reaction, so that the sulfide gas is efficiently removed, and the purification efficiency is improved;

2. the Pcb circuit board technology is fused, and the high-voltage electrode and the low-voltage electrode are embedded in the medium, so that the uniformity of plasma generated on the surface is improved, the malodorous gas is prevented from being in direct contact with the metal electrode, and the service life of the electrode is prolonged;

3. and the portable rechargeable high-voltage power supply is adopted for excitation, so that the portability of the device is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is a schematic front view of the plasma deodorization apparatus according to the present invention;

FIG. 3 is a schematic view of the back structure of the plasma deodorization device according to the present invention;

FIG. 4 is an exploded view of the structure of the plasma deodorization device according to the present invention;

FIG. 5 is a sectional view showing the front structure of the plasma deodorization device according to the present invention;

FIG. 6 is a sectional view showing a side structure of the plasma deodorization device according to the present invention.

In the figure: 1 garbage bin, 2 bung, 3 air outlets, 4 wind channels, 5 plasma deodorization devices, 501 shell, 502 gas sensor, 503 fan, 504 fixed plate, 505 plasma reactor module, 5051 dielectric layer, 5052 metal layer, 5053 discharge hole, 5054 metal hole, 506 air inlet, 507 air outlet, 6 high-voltage pulse power supply.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, in the embodiment of the present invention, a transfer and deodorization device for municipal kitchen waste comprises a garbage can 1, a can cover 2 is movably installed at the top of the garbage can 1 through a plug, a plurality of air outlets 3 are formed in a side wall of the garbage can 1, a plasma deodorization device 5 is fixedly installed on an inner wall of the garbage can 1, the plasma deodorization device 5 is communicated with the air outlets 3 through an air duct 4, the air duct 4 is arranged in a sandwich layer of a can wall of the garbage can 1, a high voltage pulse power supply 6 is fixedly installed at the bottom of the garbage can 1, the high voltage pulse power supply 6 is electrically connected to the plasma deodorization device 5 through a wire, the plasma deodorization device 5 comprises a housing 501, an odor sensor 502, a fan 503, a fixing plate 504 and a plasma reactor module 505, the fan 503 adopts a rated input voltage of 5V to 24V, the number of the odor sensors is a plurality, the fans 503 are connected in parallel, the odor sensors 502 and the fans 503 are fixedly installed on the inner wall of the shell 501, the plasma reactor module 505 is fixedly installed on the fixing plate 504, the fixing plate 504 is fixedly installed in the shell 501, and the shell 501 is further provided with an air inlet 506 and an air outlet 507.

It should be noted that the inner wall of the garbage can 1 is provided with a mounting groove for mounting the plasma deodorization device 5, the air inlet 506 is flush with the inner wall of the garbage can 1, the air outlet 507 is communicated with the air duct 4, and the fan 503 is located between the odor sensor 502 and the fixing plate 504.

Notably, the odor sensor 502 is embodied as a sulfide gas sensor, which includes hydrogen sulfide, carbon disulfide, methyl mercaptan, methyl sulfide, and dimethyl disulfide.

It is worth noting that the length of a single plasma reactor module 505 is 1cm-10cm, the width is 1cm-10cm, and the thickness is 1cm-5cm, the plasma reactor module 505 comprises a dielectric layer 5051 and a metal layer 5052, a discharge hole 5053 is formed in the dielectric layer 5051, a metal hole 5054 is formed in the metal layer 5052, the metal layer 5052 is divided into a high-voltage electrode layer and a low-voltage electrode layer, the metal layer 5052 is arranged in the dielectric layer 5051 through the Pcb technology, so that uniformity of plasma generated on the surface can be improved, direct contact between malodorous gas and the metal electrode can be avoided, the service life of the metal layer 5052 is prolonged, the dielectric layer 5051 is not less than three layers, the circle center between the metal hole 5054 and the discharge hole 5053 is coaxially arranged, and the diameter of the metal hole 5054 is larger than that of the discharge hole 5053, the diameter of the metal hole 5054 is 0.1mm-1 mm.

It is to be noted that the number of the discharge holes 5053 and the number of the metal holes 5054 are several, a distance between two centers of circles of any two adjacent discharge holes 5053 in the horizontal direction is 1cm to 3cm, and a distance between two centers of circles of any two adjacent discharge holes 5053 in the vertical direction is 1cm to 2.5 cm.

Notably, the distance between the high voltage electrode layer and the low voltage electrode layer is 0.5cm to 5 cm.

Example (b):

when the concentration of the sulfide in the garbage can reaches the threshold set by the odor sensor 502, the odor sensor 502 converts the concentration signal of the sulfide gas into an electric signal, the fan 503 of the plasma deodorization device 5 is driven to introduce the malodorous gas sucked from the air inlet 506 into the plasma reaction module 505 under the excitation of the high-voltage pulse power supply 6, the malodorous gas is decomposed by the plasma reaction module 505 through high-voltage discharge, and finally discharged to the air duct 4 through the air outlet 507 and finally discharged from the air outlet 3 through the air duct 4;

when the plasma reaction module 505 processes malodorous gas, firstly, under the action of a strong electric field, when sulfide gas flows through the metal holes 5054 of the high-voltage electrode layer and the low-voltage electrode layer, the metal layer 5052 generates uniformly distributed plasma on the surface of the metal holes 5054, and the plasma has the characteristics of surface discharge and body discharge, and high-energy electrons generated by discharge directly react with the sulfide gas to be converted into low-toxicity or non-toxic substances. Meanwhile, the sulfide gas is decomposed by active groups generated by discharge, specifically hydroxyl groups and ozone through redox reaction, so that the sulfide gas is efficiently removed.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a be used for remaining rubbish transfer deodorizing device in municipal administration kitchen, includes garbage bin (1), there is bung (2), its characterized in that at the top of garbage bin (1) through bolt movable mounting: the utility model discloses a garbage can, the garbage can is characterized in that a plurality of air outlets (3) have been seted up on the lateral wall of garbage can (1), fixed mounting has plasma deodorizing device (5) on the inner wall of garbage can (1), plasma deodorizing device (5) are linked together through wind channel (4) and air outlet (3), wind channel (4) set up in the interlayer of garbage can (1) bucket wall, the bottom fixed mounting of garbage can (1) has high-voltage pulse power supply (6), high-voltage pulse power supply (6) pass through wire electric connection plasma deodorizing device (5), plasma deodorizing device (5) include shell (501), odor sensor (502), fan (503), fixed plate (504), plasma reactor module (505), odor sensor (502) and fan (503) fixed mounting is on the inner wall of shell (501), fixed mounting has plasma reactor module (505) on fixed plate (504), the fixed plate (504) is fixedly arranged in the shell (501), and the shell (501) is also provided with an air inlet (506) and an air outlet (507).

2. The device of claim 1, wherein the device is used for transferring and deodorizing municipal kitchen waste, and is characterized in that: the inner wall of garbage bin (1) is provided with the mounting groove, the mounting groove is used for installing plasma deodorizing device (5), the inner wall parallel and level of air intake (506) and garbage bin (1), air exit (507) is linked together with wind channel (4), fan (503) are located between odor sensor (502) and fixed plate (504).

3. The device of claim 1, wherein the device is used for transferring and deodorizing municipal kitchen waste, and is characterized in that: the odor sensor (502) is specifically a sulfide gas sensor, the sulfide gas comprising hydrogen sulfide, carbon disulfide, methyl mercaptan, methyl sulfide, and dimethyl disulfide.

4. The device of claim 1, wherein the device is used for transferring and deodorizing municipal kitchen waste, and is characterized in that: the length of each plasma reactor module (505) is 1cm-10cm, the width of each plasma reactor module is 1cm-10cm, the thickness of each plasma reactor module is 1cm-5cm, each plasma reactor module (505) comprises a dielectric layer (5051) and a metal layer (5052), a discharge hole (5053) is formed in each dielectric layer (5051), a metal hole (5054) is formed in each metal layer (5052), each metal layer (5052) is divided into a high-voltage electrode layer and a low-voltage electrode layer, each metal layer (5052) is arranged in each dielectric layer (5051), the dielectric layers (5051) are not lower than three layers, the circle centers between each metal hole (5054) and the corresponding discharge hole (5053) are coaxially arranged, the diameter of each metal hole (5054) is larger than that of each discharge hole (5053), and the diameter of each metal hole (5054) is 0.1mm-1 mm.

5. The device of claim 4, wherein the device is used for transferring and deodorizing municipal kitchen waste, and is characterized in that: the number of the discharge holes (5053) and the number of the metal holes (5054) are several, the distance between two circle centers of any two adjacent discharge holes (5053) in the horizontal direction is 1cm-3cm, and the distance between two circle centers of any two adjacent discharge holes (5053) in the vertical direction is 1cm-2.5 cm.

6. The device of claim 4, wherein the device is used for transferring and deodorizing municipal kitchen waste, and is characterized in that: the distance between the high-voltage electrode layer and the low-voltage electrode layer is 0.5cm-5 cm.