A kitchen waste treatment device

Abstract

The present invention belongs to the field of food waste treatment, and specifically relates to a food waste treatment device, including a frame, a crushing device and a motor, and also a dry-wet separation device, wherein the crushing device, the dry-wet separation device and the motor are fixed on the frame in sequence from top to bottom. It also includes a fermentation bacteria barrel and a block for sealing a solid discharge port, wherein the fermentation bacteria barrel is provided with a mixture of fermentation bacteria and aqueous solution for fermenting food waste; the spiral conveying rod includes a first spiral rod, a second spiral rod and a third spiral rod connected in sequence, wherein the second spiral rod and the third spiral rod are provided with a bacterial liquid channel, and the second spiral rod and the third spiral rod are connected to the fermentation bacteria barrel through a pump, and the second spiral rod is provided with a bacterial outlet. Compared with the traditional food waste treatment device, this solution can simultaneously realize the functions of fermentation and dry-wet separation through a single device, and the structure is relatively simple and easy to operate.

Description

Technical Field

[0001] The invention belongs to the field of restaurant and kitchen waste treatment, and in particular relates to a restaurant and kitchen waste treatment device. Background Art

[0002] With the development of the economy and the improvement of people's living standards, the discharge of kitchen waste is increasing. A large amount of kitchen waste has brought serious impacts on people's living environment and health. The Chinese government attaches great importance to the problem of garbage disposal, and the development of kitchen waste disposal machines is imperative.

[0003] Existing kitchen waste treatment machines are mainly divided into the following two types. One is a crushing type treatment machine, which is usually installed under the sink and drives the cutter disc through a small DC or AC motor. The food waste in the crushing chamber is crushed by centrifugal force and then directly discharged into the sewer. This treatment device is not suitable for large-scale promotion in China because the crushed kitchen waste forms fine particles, which are easily deposited in the pipe and increase the risk of pipe blockage. In addition, due to the dining habits of Chinese people, the grease content of kitchen waste is relatively high. When the grease encounters low temperature, it is easy to adhere to the pipe, which further increases the risk of pipe blockage; the other is a microbial decomposition type treatment machine, which uses organic microorganisms to degrade organic matter in kitchen waste and convert the residue into fertilizer. This treatment method better reflects the idea of ​​waste utilization, but there are also many problems in actual use. First, the salt content of compost is high, which is not conducive to the use of fertilizer. Secondly, due to process limitations, this type of kitchen waste treatment usually takes more than one day, which puts forward higher requirements for the deodorization and storage of the garbage. Kitchen waste needs to be cleaned every day, and frequent opening of such devices will cause the indoor air environment to deteriorate.

[0004] To this end, the patent with patent number 201910659691.9 discloses a kitchen waste treatment device, including a frame, a crushing device and a motor, wherein a dry-wet separation device is also included, wherein the crushing device, the dry-wet separation device and the motor are fixed on the frame in sequence from top to bottom; the crushing device includes a crushing shell and a crushing knife, wherein the upper end of the crushing shell is provided with a feed port, and the lower end is provided with a discharge port; the crushing knife is rotatably arranged in the crushing shell, and a transmission sprocket is provided between the crushing knife and the motor; the dry-wet separation device includes a dry-wet separation shell and a spiral The conveying rod, the spiral conveying rod is rotatably arranged in the dry-wet separation shell, the dry-wet separation shell is provided with a feed port on the top and a liquid discharge port on the bottom, and the feed port of the dry-wet separation shell is located directly below the discharge port of the crushing shell; the dry-wet separation shell is provided with a filter screen, and the discharge port of the dry-wet separation shell is located below the filter screen; one end of the dry-wet separation shell is also provided with a solid discharge port; it also includes a block for sealing the solid discharge port, the dry-wet separation shell is provided with a support plate, and an elastic member is provided between the support plate and the block; a transmission sprocket is provided between the spiral conveying rod and the motor. This solution has a good volume reduction and oil-water separation effect, and reduces the problem of garbage odor.

[0005] However, after the existing kitchen waste treatment device has processed the garbage, it is usually taken to the garbage treatment plant for incineration, and before incineration, biological fermentation is usually carried out to ensure the incineration effect. After passing through the spiral conveyor rod, the garbage has relatively little residual moisture, resulting in high oil and salt content in the garbage, which is not conducive to the reproduction of bacteria, so it is usually treated with water. These steps are currently completed by different equipment, with complex structures and cumbersome operations. Therefore, there is an urgent need for a kitchen waste treatment device that can simultaneously realize the functions of fermentation and dry-wet separation. Summary of the invention

[0006] The object of the present invention is to provide a kitchen waste treatment device to simultaneously realize the functions of fermentation and dry-wet separation.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a kitchen waste treatment device, comprising a frame, a crushing device and a motor, and also comprising a dry-wet separation device, wherein the crushing device, the dry-wet separation device and the motor are fixed on the frame in sequence from top to bottom; the crushing device comprises a crushing shell and a crushing knife, wherein the upper end of the crushing shell is provided with a feed port, and the lower end is provided with a discharge port; the crushing knife is rotatably arranged in the crushing shell, and a transmission sprocket is arranged between the crushing knife and the motor; the dry-wet separation device comprises a dry-wet separation shell and a spiral conveying rod, wherein the spiral conveying rod is rotatably arranged in the dry-wet separation shell, the upper part of the dry-wet separation shell is provided with a feed port, and the lower part is provided with a liquid discharge port, and the feed port of the dry-wet separation shell is located directly below the discharge port of the crushing shell; a filter screen is arranged in the dry-wet separation shell, and the discharge port of the dry-wet separation shell is located below the filter screen; a solid discharge port is also arranged at one end of the dry-wet separation shell; a transmission sprocket is arranged between the spiral conveying rod and the motor;

[0008] It also includes a fermentation bacteria barrel and a block for sealing a solid discharge port, wherein the fermentation bacteria barrel is provided with a mixture of fermentation bacteria and aqueous solution for fermenting food waste; the spiral conveying rod includes a first spiral rod, a second spiral rod and a third spiral rod connected in sequence, the first spiral rod and the second spiral rod are both provided with spiral blades, and the distance between the spiral blades on the first spiral rod and the second spiral rod gradually decreases; the second spiral rod and the third spiral rod are provided with a bacterial liquid channel, and the second spiral rod and the third spiral rod are connected to the fermentation bacteria barrel through a pump, and the second spiral rod is provided with a bacterial discharge port; a support plate is provided on the dry-wet separation shell, an elastic member is provided between the support plate and the block, and the block is fixed on the third spiral rod.

[0009] The principle of this scheme is that the food waste is first physically crushed by the crushing device, and the crushed waste enters the dry-wet separation device. Under the action of the spiral conveying rod, the food waste gradually moves and is compressed, and the liquid waste flows out from the liquid discharge port through the filter for collection; at the same time, the pump is started, and the fermentation bacteria and the aqueous solution are pumped into the second spiral rod and into the dry-wet separation shell to ferment the compressed waste and add water; then the compression and movement are continued, and finally, as the solid waste increases with the pressure, the elastic force of the elastic part is overcome, so that the solid discharge port is opened, and the solid waste flows out from the solid discharge port for collection. The collected solid waste and liquid waste are further processed in the subsequent operation.

[0010] The beneficial effects of this solution are:

[0011] 1. The setting of the fermentation bacteria barrel allows the aqueous solution to be mixed with the compressed food waste, which can further analyze the oil and salt remaining in the food waste; at the same time, the addition of the aqueous solution reduces the oil and salt content of the food waste, which is more conducive to the fermentation treatment of the fermentation bacteria.

[0012] 2. The distance between the spiral blades on the first spiral rod and the second spiral rod gradually decreases. Under this setting, the closer the distance between the spiral blades, the better the compression effect. At the same time, since the first spiral rod and the second spiral rod are connected in sequence, the distance between the spiral blades of the first spiral rod and the second spiral rod is relatively large, which facilitates the food waste compressed by the first spiral rod to absorb water and become fluffy.

[0013] 3. This solution combines the crushing device and the dry-wet separation device, and uses one motor to drive the two devices at the same time, saving costs and greatly reducing the occupied space.

[0014] Compared with the traditional food waste treatment device, this solution can simultaneously realize the functions of fermentation and dry-wet separation through a single device, with a relatively simple structure and easy operation.

[0015] Furthermore, the diameter of the second spiral rod gradually decreases toward the third spiral rod. Since the second spiral rod is provided with a bacteria outlet, the strength there is relatively low, therefore, the larger diameter toward the first spiral rod can increase the contact surface between the spiral blade and the spiral rod, thereby increasing the overall strength.

[0016] Furthermore, a stirring rod is provided on the second spiral rod near the first spiral rod. The arrangement of the stirring rod can make the compressed food waste more fluffy, thereby making it more in contact with bacteria and moisture.

[0017] Furthermore, a one-way valve is provided at the bacteria outlet for one-way communication between the second spiral rod and the dry-wet separation shell. The one-way valve can effectively prevent fermentation bacteria and water from entering the bacteria liquid channel.

[0018] Furthermore, the solid discharge port is conical, and the stopper is a conical block matching the solid discharge port. The wedge-shaped mesh has a better filtering effect.

[0019] Furthermore, the filter holes of the filter screen are wedge-shaped mesh holes.

[0020] Furthermore, a support rod is provided between the support plate and the dry-wet separation shell. The provision of the support rod makes the support plate stronger and more stably fixed.

[0021] Furthermore, a collection box is provided below the liquid discharge port and the solid discharge port. The provision of the collection box can conveniently collect the pre-processed garbage and facilitate subsequent operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a kitchen waste treatment device according to an embodiment of the present invention;

[0023] Figure 2This is a structural schematic diagram of a kitchen waste treatment device according to an embodiment of the present invention;

[0024] Figure 3 The present invention is a schematic structural diagram of a kitchen waste treatment device according to an embodiment of the present invention.

[0025] Figure 4 It is a structural schematic diagram of a dry-wet separation device in a kitchen waste treatment device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following is further described in detail through specific implementation methods:

[0027] The figure marks in the drawings of the specification include: frame 10, crushing device 20, crushing knife 21, dry-wet separation device 30, dry-wet separation shell 301, first screw rod 3021, second screw rod 3022, third screw rod 3023, bacteria outlet 3024, stirring rod 3025, sprocket 303, support plate 304, solid discharge port 305, block 306, elastic member 307, feed port 308, liquid discharge port 309, spray port 310, filter screen 311, motor 40, transmission chain 41.

[0028] This embodiment provides a food waste pretreatment device, such as Figure 1 , Figure 2 As shown, the whole device mainly includes three parts, which are a crushing device 20 , a dry-wet separation device 30 and a motor 40 from bottom to top, and all three devices are installed on a frame 10 .

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, the crushing device 20 includes a crushing shell and a group of crushing knives 21. The feed port 308 of the crushing shell is in the shape of a trumpet that expands outward to facilitate the placement of garbage. A group of crushing knives includes blades, two blades are arranged alternately, and the right ends of the two blades are provided with gears that mesh with each other. The blades include a number of cutter discs and cutter disc spacers. The assembly form of the driving shaft is 1 cutter disc and 1 cutter disc spacer, and several are assembled in sequence; the assembly form of the driven shaft is 1 cutter disc spacer and 1 cutter disc, and several are assembled in sequence (the same number as the assembly number of the driving shaft). A sprocket 303 is provided on the rotating shaft of one of the blades, and the sprocket 303 is interconnected with the sprocket 303 on the motor 40 through a transmission chain 41. The motor 40 is driven by 380V three-phase electricity, with a rated power of 3.7kw, and the workload is preferably about 2 cubic meters per hour.

[0030] Below the crushing shell is the discharge port, and directly below the discharge port of the crushing shell is the feed port 308 of the dry-wet separation device 30. Figure 1 and Figure 4As shown, the dry-wet separation device 30 includes, from left to right, a screw conveying rod 302 , a sprocket wheel 303 , a dry-wet separation shell 301 , a conical stopper 306 , an elastic member 307 and a support plate 304 .

[0031] The leftmost end of the dry-wet separation shell 301 and the support plate 304 are both provided with bearings, and the screw conveying rod 302 is rotatably arranged in the dry-wet separation shell 301 through the two bearings. The sprocket 303 is fixed to the leftmost end of the screw conveying rod 302 and is connected to the sprocket 303 on the motor 40 through the transmission chain 41.

[0032] The spiral conveying rod is rotatably arranged in the dry-wet separation shell 301. The dry-wet separation shell 301 has a feed port on the top and a liquid discharge port on the bottom. The feed port of the dry-wet separation shell 301 is located directly below the discharge port of the crushing shell. A filter screen is arranged in the dry-wet separation shell 301, and the discharge port of the dry-wet separation shell 301 is located below the filter screen; a solid discharge port 305 is also arranged at one end of the dry-wet separation shell 301; a transmission sprocket is arranged between the spiral conveying rod and the motor.

[0033] In addition, a fermentation bacteria barrel is provided, in which a mixture of fermentation bacteria and aqueous solution for fermenting food waste is provided. Figure 4 As shown, the spiral conveying rod includes a first spiral rod 3021, a second spiral rod 3022 and a third spiral rod 3023 connected in sequence from left to right. The first spiral rod 3021 and the second spiral rod 3022 are both provided with spiral blades, and the distance between the spiral blades on the first spiral rod 3021 and the second spiral rod 3022 gradually decreases; that is, the spiral blades are getting denser and denser. A bacterial liquid channel is provided in the second spiral rod 3022 and the third spiral rod 3023, and the second spiral rod 3022 and the third spiral rod 3023 are connected to the fermentation bacteria barrel through a pump. Specifically, the conveying pipe of the fermentation bacteria barrel is connected to the bacterial liquid channel at the right end of the third spiral rod 3023 through a rotating connector. The left end bacterial outlet 3024 on the second spiral rod 3022 is provided with a one-way valve that conducts one-way from the second spiral rod 3022 to the dry-wet separation shell 301. The setting of the one-way valve can effectively prevent fermentation bacteria and water from entering the bacterial liquid channel; a support plate 304 is provided on the dry-wet separation shell 301, and an elastic member 307 is provided between the support plate 304 and the stopper 306, and the stopper 306 is fixed on the third spiral rod 3023. The elastic member 307 is made of a stainless steel compression spring and has a long service life.

[0034] A stirring rod 3025 is provided on the second spiral rod 3022 near the first spiral rod 3021. The arrangement of the stirring rod 3025 can make the compressed food waste more fluffy, thereby making it more in contact with bacteria and moisture.

[0035] When in use, the food waste is first physically crushed by the crushing device, and the crushed waste enters the dry-wet separation device 30. Under the action of the spiral conveying rod, the food waste gradually moves and is compressed, and the liquid waste flows out from the liquid discharge port through the filter screen for collection; at the same time, the pump is started to pump the fermentation bacteria and the aqueous solution into the second spiral rod 3022 and into the dry-wet separation shell 301, fermenting the compressed waste and adding water; then continue to compress and move, and finally, as the solid waste increases with the pressure, it overcomes the elastic force of the elastic member, so that the solid discharge port is opened, and the solid waste flows out from the solid discharge port for collection. The collected solid waste and liquid waste are further processed in the subsequent operation.

[0036] Compared with the traditional food waste treatment device, this solution can simultaneously realize the functions of fermentation and dry-wet separation through a single device, with a relatively simple structure and easy operation.

[0037] It should be noted in advance that, in the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A kitchen waste treatment device, comprising a frame, a crushing device and a motor, and also comprising a dry-wet separation device, wherein the crushing device, the dry-wet separation device and the motor are fixed on the frame in sequence from top to bottom; the crushing device comprises a crushing shell and a crushing knife, the upper end of the crushing shell is provided with a feed port, and the lower end is provided with a discharge port; the crushing knife is rotatably arranged in the crushing shell, and a transmission sprocket is arranged between the crushing knife and the motor; the dry-wet separation device comprises a dry-wet separation shell and a spiral conveying rod, the spiral conveying rod is rotatably arranged in the dry-wet separation shell, the upper part of the dry-wet separation shell is provided with a feed port, and the lower part is provided with a liquid discharge port, and the feed port of the dry-wet separation shell is located directly below the discharge port of the crushing shell; a filter screen is provided in the dry-wet separation shell, and the discharge port of the dry-wet separation shell is located below the filter screen; a solid discharge port is also provided at one end of the dry-wet separation shell; a transmission sprocket is provided between the spiral conveying rod and the motor; it is characterized in that: It also includes a fermentation bacteria barrel and a stopper for sealing a solid discharge port, wherein a mixture of fermentation bacteria and aqueous solution for fermenting food waste is provided in the fermentation bacteria barrel; the spiral conveying rod includes a first spiral rod, a second spiral rod and a third spiral rod connected in sequence, wherein the first spiral rod and the second spiral rod are both provided with spiral blades, and the distance between the spiral blades on the first spiral rod and the second spiral rod gradually decreases, and the distance between the spiral blades between the first spiral rod and the second spiral rod is larger, so that the food waste compressed by the first spiral rod absorbs water and becomes fluffy; a bacterial liquid channel is provided in the second spiral rod and the third spiral rod, and the second spiral rod and the third spiral rod are connected to the fermentation bacteria barrel through a pump, and a bacterial discharge port is provided on the second spiral rod; a support plate is provided on the dry-wet separation shell, an elastic member is provided between the support plate and the stopper, and the stopper is fixed on the third spiral rod; The diameter of the second spiral rod gradually decreases toward the third spiral rod; the bacteria outlet is located at the left end of the second spiral rod, and a one-way valve is provided at the bacteria outlet to conduct one-way communication from the second spiral rod to the dry-wet separation shell.

2. A kitchen waste treatment device according to claim 1, characterized in that: A stirring rod is arranged on the second screw rod near the first screw rod.

3. A kitchen waste treatment device according to claim 1, characterized in that: The solid discharge port is conical, and the stopper is a conical block matching the solid discharge port.

4. A kitchen waste treatment device according to claim 3, characterized in that: The filter holes of the filter screen are wedge-shaped mesh holes.

5. A kitchen waste treatment device according to claim 4, characterized in that: A support rod is arranged between the support plate and the dry-wet separation shell.

6. A kitchen waste treatment device according to claim 5, characterized in that: A collecting box is provided below the liquid discharge port and the solid discharge port.

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