CN213570493U - Kitchen waste crushing and regenerating methane tank - Google Patents

Abstract

The utility model discloses a belong to renewable energy technical field, specifically be a broken regeneration methane tank of rubbish from cooking, it includes: broken jar, water tank, control box, lye tank and reaction tank, the motor is installed to broken jar inner wall bottom, the rotation axis is installed to the motor output, three counter roll is all installed to rotation axis both sides wall, the blade is installed to counter roll one end, and this broken regeneration methane jar of rubbish from cooking not only installs spraying system in broken jar and can rinse broken jar inside, avoids remaining rubbish from cooking to remain and produces the peculiar smell, still installs pressure sensor and communication device, when pressure data appears the abnormal change, in time reminds the staff to overhaul the device, avoids the marsh gas supply unstable, influences people's use, still installs pH value governing system simultaneously, avoids the pH value too high or low excessively in the reaction tank, influences the normal clear of biogas fermentation.

Description

Kitchen waste crushing and regenerating methane tank

Technical Field

The utility model relates to the technical field of renewable energy, in particular to a kitchen garbage crushing and regenerating methane tank.

Background

The kitchen waste is waste generated in activities such as daily life, food processing, food service, unit catering and the like of residents, comprises abandoned vegetable leaves, leftovers, fruit peels, egg shells, tea leaves, bones and the like, is mainly sourced from household kitchens, restaurants, dining halls, markets and other industries related to food processing, and contains extremely high water content and organic matters, so that the kitchen waste is easily rotted and generates stink. The biogas tank can be used as fertilizer and feed after strict treatment and can also generate biogas to be used as fuel or power generation, but the kitchen waste crushing and regenerating biogas tank on the market can not clean the tank body after crushing the kitchen waste at present, the garbage is left in the crushing tank for a long time, peculiar smell is easily generated to pollute the atmosphere, and a pressure sensing system is not arranged, so that the pressure in the biogas tank can not be monitored in real time, and a worker can not be reminded to overhaul the device in time when the pressure value is abnormal, and a pH value sensing system is also arranged, so that a large amount of acid can be generated in the biogas tank during fermentation to influence the normal operation of the biogas fermentation.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.

In view of the above and/or problems with existing biogas generators, the present invention has been developed.

Therefore, the utility model aims at providing a broken regeneration methane tank of rubbish from cooking, not only install spraying system in broken jar and can rinse broken jar inside, avoid rubbish from cooking to remain and produce the peculiar smell, still install pressure sensor and communication device, when pressure data appears the abnormal change, in time remind the staff to overhaul the device, avoid the marsh gas supply unstable, influence people's use, still install pH value governing system simultaneously, avoid pH value too high or low excessively in the reaction tank, influence the normal clear of biogas fermentation.

For solving the technical problem, according to the utility model discloses an aspect, the utility model provides a following technical scheme:

a kitchen waste crushing and regenerating methane tank comprises: the device comprises a crushing tank, a water tank, a control box, an alkaline liquid tank and a reaction tank, wherein a motor is installed at the bottom end of the inner wall of the crushing tank, a rotating shaft is installed at the output end of the motor, three support shafts are installed on two side walls of the rotating shaft, a blade is installed at one end of each support shaft, a water outlet pipe is communicated with the bottom end of each crushing tank, an inlet pipe is communicated with one side wall of each crushing tank, the water tank is installed at the top end of the outer wall of each crushing tank, a spraying pipeline is installed at the top end of the inner wall of each crushing tank, the water tanks are communicated with the crushing tanks through the spraying pipelines, the communicating pipes are communicated with the reaction tank, a first valve is installed inside each communicating pipe, the alkaline liquid tank is installed on one side of the outer wall of each crushing tank, a weight sensor is, the pipeline intercommunication has the reaction tank, the control box is installed on lye tank outer wall top, controller and communication device are installed to control box inner wall one side, pressure sensor is installed on reaction tank inner wall top, the agitator is installed to the reaction tank bottom, pH value sensor is installed to reaction tank inner wall one side, reaction tank bottom intercommunication has the scum pipe, reaction tank top intercommunication has the marsh gas pipe, the heat preservation is installed to the reaction tank outer wall, controller electric connection has communication device, weighing transducer, first valve, second valve, pressure sensor, agitator, pH value sensor and agitator.

As an optimized scheme of the kitchen garbage crushing and regenerating methane tank, the utility model discloses a kitchen garbage crushing and regenerating methane tank, wherein: and a pre-filtering net, a PP cotton filtering net and an active carbon filtering net are arranged in the water outlet pipe.

As an optimized scheme of the kitchen garbage crushing and regenerating methane tank, the utility model discloses a kitchen garbage crushing and regenerating methane tank, wherein: the support columns are installed at four corners of the bottom end of the outer wall of the crushing tank, and the bottom cushion is installed at the bottom ends of the support columns.

As an optimized scheme of the kitchen garbage crushing and regenerating methane tank, the utility model discloses a kitchen garbage crushing and regenerating methane tank, wherein: the observation window is installed to broken jar front lateral wall, the observation window is made for transparent ya keli material.

As an optimized scheme of the kitchen garbage crushing and regenerating methane tank, the utility model discloses a kitchen garbage crushing and regenerating methane tank, wherein: the water tank top intercommunication has the inlet tube, the case lid is installed to inlet tube one end, the piece is carried to case lid lateral wall installation.

As an optimized scheme of the kitchen garbage crushing and regenerating methane tank, the utility model discloses a kitchen garbage crushing and regenerating methane tank, wherein: the front side wall of the control box is provided with a box door, and one side wall of the box door is provided with a buckle groove.

As an optimized scheme of the kitchen garbage crushing and regenerating methane tank, the utility model discloses a kitchen garbage crushing and regenerating methane tank, wherein: a lateral wall of the lye tank is communicated with a feeding pipe, one end of the feeding pipe is provided with an apron, one lateral wall of the apron is provided with a handle, and the handle is externally provided with an anti-skid sleeve.

Compared with the prior art: the working personnel put the kitchen waste into the crushing tank through the feeding pipe, the rotating shaft is driven to rotate through the motor, the rotating shaft drives the fulcrum shaft to rotate, the fulcrum shaft drives the blade to crush the kitchen waste, after the crushing is finished, the controller controls the first valve to be opened, the crushed kitchen waste enters the reaction tank through the communicating pipe, the controller controls the first valve to be closed, the cleaning liquid in the water tank is sprayed into the crushing tank through the spraying pipeline to clean the residual waste in the crushing tank and then is discharged through the water outlet pipe, the kitchen waste is subjected to methane generation through the reaction tank, the pH value of the content in the reaction tank is sensed through the pH sensor, when the pH value is too low and the acidity is strong, the second valve in the controller controls the pipeline to be opened, the alkali liquor in the alkali liquor tank is released into the reaction tank through the pipeline, the weight of the residual alkali liquor in the tank is sensed through, when the released alkali liquor reaches a set value, the controller controls the second valve to be closed to avoid excessive alkali liquor release at one time, then the controller controls the stirrer to stir the contents mixed with the alkali liquor to uniformly mix the contents, so that the phenomenon that part of the contents are too strong in alkalinity to destroy the activity of anaerobic bacteria is avoided, the pressure in the reaction tank is sensed by the pressure sensor, when abnormal fluctuation of pressure data occurs, the controller controls the communication device, and the data is transmitted to the remote terminal by the communication device to remind a worker to check the condition of the device in the future so as to avoid instability of methane supply and influence the use of people, the kitchen garbage crushing and regenerating methane tank is provided with a spraying system which can clean the interior of the crushing tank and prevent kitchen garbage from remaining to generate peculiar smell, and is also provided with the pressure sensor and the communication device, when abnormal change of the pressure data occurs, the staff is reminded in time to overhaul the device, avoids marsh gas supply unstable, influences people's use, still installs pH value governing system simultaneously, avoids the pH value in the reaction tank too high or low excessively, influences the normal clear of marsh gas fermentation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor. Wherein:

fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a front view of the present invention.

In the figure: 100 crushing tank, 110 motor, 120 rotating shaft, 130 fulcrum, 140 blade, 150 water outlet pipe, 151 prefiltering net, 152PP cotton filtering net, 153 activated carbon filtering net, 160 supporting column, 161 bottom pad, 170 observation window, 180 feeding pipe, 190 communicating pipe, 191 first valve, 200 water tank, 210 spraying pipeline, 220 water inlet pipe, 230 box cover, 240 lifting block, 300 control box, 310 controller, 320 communication device, 330 box door, 340 buckle-pull groove, 400 lye tank, 410 weight sensor, 420 feeding pipe, 430 cover plate, 440 handle, 450 antiskid sleeve, 460 pipe, 470 second valve, 500 reaction tank, 510 pressure sensor, 520 stirrer, 530pH value sensor, 540 heat-insulating layer, 550 biogas pipe, 560 deslagging pipe.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways than those specifically described herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of explanation, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The utility model provides a broken regeneration methane tank of rubbish from cooking, not only install spraying system in broken jar and can rinse broken jar inside, avoid rubbish from cooking to remain and produce the peculiar smell, still install pressure sensor and communication device, when pressure data appears the abnormal change, in time remind the staff to overhaul the device, avoid the marsh gas supply unstable, influence people's use, still install pH value governing system simultaneously, avoid pH value too high or low excessively in the reaction tank, influence the normal clear of biogas fermentation, please refer to figure 1 and figure 2, include: the system comprises a crushing tank 100, a water tank 200, a control box 300, an alkaline liquid tank 400 and a reaction tank 500;

referring to fig. 1 and 2 again, a motor 110 is installed at the bottom end of the inner wall of the crushing tank 100, a rotating shaft 120 is installed at the output end of the motor 110, three support shafts 130 are installed on two side walls of the rotating shaft 120, a blade 140 is installed at one end of each support shaft 130, a water outlet pipe 150 is communicated with the bottom end of the crushing tank 100, a feed pipe 180 is communicated with one side wall of the crushing tank 100, a water tank 200 is installed at the top end of the outer wall of the crushing tank 100, a spray pipeline 210 is installed at the top end of the inner wall of the crushing tank 100, the water tank 200 is communicated with the crushing tank 100 through the spray pipeline 210, a communicating pipe 190 is communicated with the bottom end of the crushing tank 100, the communicating pipe 190 is communicated with a reaction tank 500, a first valve 191 is installed inside the communicating pipe 190, an alkaline liquid tank 400 is installed at one side of the, the inside of the pipeline 460 is provided with a second valve 470, the pipeline 460 is communicated with a reaction tank 500, the top end of the outer wall of the alkaline solution tank 400 is provided with a control box 300, one side of the inner wall of the control box 300 is provided with a controller 310 and a communication device 320, the top end of the inner wall of the reaction tank 500 is provided with a pressure sensor 510, the bottom end of the reaction tank 500 is provided with a stirrer 520, one side of the inner wall of the reaction tank 500 is provided with a pH value sensor 530, the bottom end of the reaction tank 500 is communicated with a slag discharge pipe 560, the top end of the reaction tank 500 is communicated with a biogas pipe 550, the outer wall of the reaction tank 500 is provided with a heat insulation layer 540, the controller 310 is electrically connected with the communication device 320, a weight sensor 410, a first valve 191, the second valve 470, the pressure sensor 510, the stirrer 520, the pH value sensor 530 and the, the output end of the motor 110 is connected with a rotating shaft 120 through a bolt, two side walls of the rotating shaft 120 are connected with three support shafts 130 through bolts, one end of each support shaft 130 is connected with a blade 140 through a bolt, the bottom end of the crushing tank 100 is communicated with a water outlet pipe 150, one side wall of the crushing tank 100 is communicated with a feed pipe 180, the top end of the outer wall of the crushing tank 100 is hinged with a water tank 200, the top end of the inner wall of the crushing tank 100 is connected with a spray pipeline 210 through a spray pipeline 210, the bottom end of the crushing tank 100 is communicated with a communicating pipe 190, the communicating pipe 190 is communicated with a reaction tank 500, a first valve 191 is embedded and installed inside the communicating pipe 190, one side of the outer wall of the crushing tank 100 is connected with an alkaline liquid tank 400 through a bolt, the bottom end of the inner wall of the alkaline liquid tank 400 is connected with a weight sensor, the pipeline 460 is communicated with a reaction tank 500, the top end of the outer wall of the alkaline solution tank 400 is connected with a control box 300 through a bolt, one side of the inner wall of the control box 300 is connected with a controller 310 and a communication device 320 through a bolt, the top end of the inner wall of the reaction tank 500 is connected with a pressure sensor 510 through a bolt, the bottom end of the reaction tank 500 is connected with a stirrer 520 through a bolt, one side of the inner wall of the reaction tank 500 is connected with a pH value sensor 530 through a bolt, the bottom end of the reaction tank 500 is communicated with a slag discharge pipe 560, the top end of the reaction tank 500 is communicated with a biogas pipe 550, the outer wall of the reaction tank 500 is connected with a heat insulation layer 540 in an adhesion manner, the controller 310 is electrically connected with the communication device 320, a weight sensor 410, a first valve 191, a second valve 470, the pressure sensor 510, the stirrer 520, the pH value sensor, the rotating shaft 120 is used for driving the supporting shaft 130 to rotate, the supporting shaft 130 is used for driving the blade 140 to rotate, the blade 140 is used for crushing kitchen waste, the feeding pipe 180 is used for feeding the kitchen waste into the crushing tank 100, the water tank 200 is used for providing a space for containing water, the spraying pipeline 210 is used for communicating the water tank 200 with the crushing tank 100 and spraying the water into the crushing tank 100 to clean the crushing tank 100, the water outlet pipe 150 is used for discharging cleaning liquid, the communicating pipe 190 is used for communicating the reaction tank 500 with the crushing tank 100 and providing a space for the crushed kitchen waste to enter the reaction tank 500, the reaction tank 500 is used for providing a space for generating biogas, the first valve 191 is used for controlling the opening and closing of the communicating pipe 190, the lye tank 400 is used for providing a space for containing lye, the weight sensor is used for sensing weight, the pipeline 460 is used for communicating the lye tank 400 with the reaction tank 500, the control box 300 is used for providing a space for containing the controller 310 and the, the controller 310 is used for controlling the communication device 320, the weight sensor 410, the first valve 191, the second valve 470, the pressure sensor 510, the stirrer 520, the pH sensor 530 and the stirrer 520, the communication device 320 is used for transmitting the received data to the remote terminal, the pressure sensor 510 is used for sensing the pressure in the reaction tank 500, the stirrer 520 is used for stirring the contents in the reaction tank 500, the pH sensor 530 is used for sensing the pH value of the contents, the slag discharge pipe 560 is used for discharging the biogas slurry and the biogas residue after the reaction, and the biogas pipe 550 is used for discharging biogas;

when the device is used specifically, a worker puts kitchen waste into the crushing tank 100 through the feeding pipe 180, the motor 110 drives the rotating shaft 120 to rotate, the rotating shaft 120 drives the fulcrum shaft 130 to rotate, the fulcrum shaft 130 drives the blade 140 to crush the kitchen waste, after the crushing is completed, the controller 310 controls the first valve 191 to be opened, the crushed kitchen waste enters the reaction tank 500 through the communicating pipe 190, the controller 310 controls the first valve 191 to be closed, the cleaning liquid in the water tank 200 is sprayed into the crushing tank 100 through the spraying pipeline 210 to clean the residual waste in the crushing tank 100, then the waste is discharged through the water outlet pipe 150, the kitchen waste is subjected to biogas generation through the reaction tank 500, the pH value of the content in the reaction tank 500 is sensed through the pH sensor 530, when the pH value shows to be too low and the acidity is strong, the controller 310 controls the second valve 470 in the pipeline 460 to be opened, the alkali liquor in the alkali liquor box 400 is released into the reaction tank 500 through a pipeline 460, the weight of the residual alkali liquor in the tank is sensed through a weight sensor 410, when the released alkali liquor reaches a set value, the controller 310 controls the second valve 470 to be closed, excessive alkali liquor release at one time is avoided, then the controller 310 controls the stirrer 520 to stir the contents mixed with the alkali liquor, the contents are uniformly mixed, the phenomenon that partial contents are too strong in alkalinity and the activity of anaerobic bacteria is damaged is avoided, the pressure in the reaction tank 500 is sensed through the pressure sensor 510, when abnormal fluctuation occurs to pressure data, the communication device 320 is controlled through the controller 310, data are transmitted to a remote terminal through the communication device 320, a worker is reminded to check the condition of the device before, the instability of methane supply is avoided, and the use of people is influenced.

Referring to fig. 1 and 2 again, a pre-filter screen 151, a PP cotton filter screen 152 and an activated carbon filter screen 153 are installed inside the water outlet pipe, specifically, the pre-filter screen 151, the PP cotton filter screen 152 and the activated carbon filter screen 153 are connected inside the water outlet pipe by bolts, the pre-filter screen 151 is used for filtering large particulate matters, the PP cotton filter screen 152 is used for filtering various particle impurities in liquid, and the activated carbon filter screen 153 is used for adsorbing peculiar smell in the liquid.

Referring to fig. 1 and 2 again, the four corners of the outer wall of the crushing tank 100 are provided with support pillars 160, the bottom ends of the support pillars 160 are provided with bottom pads 161, specifically, the four corners of the outer wall of the crushing tank 100 are connected with the support pillars 160 through bolts, the bottom ends of the support pillars 160 are connected with the bottom pads 161 in an adhesive manner, the support pillars 160 are used for supporting the crushing tank 100, and the bottom pads 161 are used for preventing the support pillars 160 from slipping.

Referring to fig. 1 and 2 again, the observation window 170 is installed on the front side wall of the crushing tank 100, the observation window 170 is made of transparent acrylic material, specifically, the observation window 170 is installed on the front side wall of the crushing tank 100, the observation window 170 is made of transparent acrylic material, and the observation window 170 is used for observing the condition inside the crushing tank 100.

Referring to fig. 1 and 2 again, a water inlet pipe 220 is communicated with the top end of the water tank 200, a tank cover 230 is installed at one end of the water inlet pipe 220, a lifting block 240 is installed on one side wall of the tank cover 230, specifically, the water inlet pipe 220 is communicated with the top end of the water tank 200, a tank cover 230 is hinged to one end of the water inlet pipe 220, the lifting block 240 is bolted to one side wall of the tank cover 230, the water inlet pipe 220 is used for adding water into the water tank 200, the tank cover 230 is used for closing the water tank 200 to prevent foreign matters from entering the water tank 200, and the lifting block 240 is used.

Referring to fig. 1 and 2 again, a door 330 is disposed on a side wall of the front surface of the control box 300, a buckle slot 340 is disposed on a side wall of the door 330, specifically, the door 330 is hinged to the side wall of the front surface of the control box 300, the buckle slot 340 is disposed on a side wall of the door 330, the door 330 is used for opening the control box 300, and the buckle slot 340 is used for facilitating opening the door 330.

Referring to fig. 1 and 2 again, a feeding pipe 420 is communicated with one side wall of the lye tank 400, a cover plate 430 is installed at one end of the feeding pipe 420, a handle 440 is installed on one side wall of the cover plate 430, an anti-slip sleeve 450 is installed outside the handle 440, specifically, the feeding pipe 420 is communicated with one side wall of the lye tank 400, the cover plate 430 is hinged to one end of the feeding pipe 420, the handle 440 is bolted to one side wall of the cover plate 430, the anti-slip sleeve 450 is bonded outside the handle 440, the feeding pipe 420 is used for adding lye into the lye tank 400, the cover plate 430 is used for sealing the feeding pipe 420 to prevent the lye from losing alkalinity due to reaction with air, the handle 440 is used for conveniently opening the cover plate 430, and the anti-slip sleeve 450 is used for preventing slipping when the.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (7)

1. A kitchen waste crushing regeneration methane tank is characterized by comprising: broken jar (100), water tank (200), control box (300), lye tank (400) and reaction tank (500), motor (110) are installed to broken jar (100) inner wall bottom, rotation axis (120) are installed to motor (110) output, three counter roll (130) are all installed to rotation axis (120) both sides wall, blade (140) are installed to counter roll (130) one end, broken jar (100) bottom intercommunication has outlet pipe (150), broken jar (100) a lateral wall intercommunication has inlet pipe (180), water tank (200) are installed on broken jar (100) outer wall top, spray piping (210) are installed on broken jar (100) inner wall top, water tank (200) have broken jar (100) through spray piping (210) intercommunication, broken jar (100) bottom intercommunication has communicating pipe (190), communicating pipe (190) intercommunication reaction tank (500), communicating pipe (190) internally mounted has first valve (191), lye tank (400) is installed to broken jar (100) outer wall one side, weight sensor (410) are installed to lye tank (400) inner wall bottom, lye tank (400) bottom intercommunication has pipeline (460), pipeline (460) internally mounted has second valve (470), pipeline (460) intercommunication has reaction tank (500), control box (300) is installed on lye tank (400) outer wall top, controller (310) and communication device (320) are installed to control box (300) inner wall one side, pressure sensor (510) are installed on reaction tank (500) inner wall top, agitator (520) are installed to reaction tank (500) bottom, pH value sensor (530) are installed to reaction tank (500) inner wall one side, reaction tank (500) bottom intercommunication has slag discharge pipe (560), the reaction tank (500) top is communicated with a biogas pipe (550), heat preservation (540) are installed to the reaction tank (500) outer wall, controller (310) electric connection has communication device (320), weight sensor (410), first valve (191), second valve (470), pressure sensor (510), agitator (520), pH value sensor (530) and agitator (520).

2. The kitchen waste crushing and regenerating biogas tank as recited in claim 1, wherein the outlet pipe (150) is internally provided with a pre-filtering net (151), a PP cotton filtering net (152) and an activated carbon filtering net (153).

3. The kitchen waste crushing and regenerating biogas tank as recited in claim 1, characterized in that four corners of the bottom end of the outer wall of the crushing tank (100) are provided with support columns (160), and the bottom ends of the support columns (160) are provided with bottom pads (161).

4. The kitchen waste crushing and regenerating biogas tank as recited in claim 3, wherein the side wall of the front face of the crushing tank (100) is provided with an observation window (170), and the observation window (170) is made of transparent acrylic material.

5. The kitchen waste crushing and regenerating biogas tank according to claim 3, characterized in that a water inlet pipe (220) is communicated with the top end of the water tank (200), a tank cover (230) is installed at one end of the water inlet pipe (220), and a lifting block (240) is installed on one side wall of the tank cover (230).

6. The kitchen waste crushing and regenerating methane tank as claimed in claim 1, wherein a tank door (330) is arranged on a side wall of the front face of the control tank (300), and a buckle groove (340) is formed on a side wall of the tank door (330).

7. The kitchen waste crushing and regenerating biogas tank as recited in claim 1, wherein a feeding pipe (420) is communicated with one side wall of the lye tank (400), a cover plate (430) is installed at one end of the feeding pipe (420), a handle (440) is installed on one side wall of the cover plate (430), and an anti-slip sleeve (450) is installed outside the handle (440).

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