Kitchen waste oil absorption device

Abstract

The application relates to the field of garbage recycling treatment, and provides a kitchen waste oil absorption device, which comprises a tank body, an electric pump, an oil suction pipe and an oil suction gun; the electric pump is installed on the tank body, and the oil suction pipe is communicated with the tank body through the electric pump; the oil suction gun is communicated with the electric pump through the oil suction pipe; wherein the tank body comprises an outer tank, an inner tank, a cover body, an inner pressure part, a driving part and a sensing part; the inner tank for storing sewage is connected with the outer tank for storing waste oil, the inner tank is located in the outer tank, the height of the inner tank is lower than that of the outer tank, and a space for containing oil exists between the outer wall of the inner tank and the inner wall of the outer tank; the oil suction pipe penetrates through the outer tank and is communicated with the inner tank. The application has the effects of conveniently absorbing waste oil and providing oil-water separation.

Description

Technical Field

[0001] This application relates to the field of waste recycling, and in particular to a device for absorbing kitchen waste oil. Background Technology

[0002] Waste oil refers to waste oil generated in daily life, food processing, catering services, and unit catering activities. It mainly includes waste frying oil, swill oil, and gutter oil, which originate from the catering industry. Its main sources are family kitchens, restaurants, hotels, canteens, markets, and other industries related to food processing.

[0003] Currently, the main method for treating waste cooking oil is to first treat it in an grease trap before discharging it into the sewage network, and then manually remove the oil. The oil removal equipment is mostly large oil suction trucks, which collect the waste oil at various collection points for further processing and reuse.

[0004] Existing oil suction devices often result in waste oil being mixed with sewage during collection, leading to a large amount of sewage in the collected waste oil, which is difficult to handle. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a waste oil absorption device for kitchen waste that facilitates oil-water separation.

[0006] The technical solution for the waste cooking oil absorption device provided in this application is as follows:

[0007] A waste cooking oil suction device includes a tank, an electric pump, a suction pipe, and a suction gun. The electric pump is installed in the tank, and the suction pipe is connected to the tank through the electric pump. The suction gun is connected to the electric pump through the suction pipe. The tank includes an outer tank, an inner tank, a cover, an internal pressure unit, a drive unit, and a sensing unit. The inner tank, used for storing wastewater, is connected to the outer tank, used for storing waste oil. The inner tank is located inside the outer tank, and its height is lower than that of the outer tank. There is a space between the outer wall of the inner tank and the inner wall of the outer tank to hold the grease. The space; the oil suction pipe passes through the outer tank and communicates with the inner tank; the cover is detachably connected to the outer tank; the drive unit is installed on the cover and its output end is aligned with the inner tank; the internal pressure unit is connected to the output end of the drive unit, and the cross-section of the internal pressure unit is smaller than the inner diameter of the inner tank; the sensing unit is installed on the inner tank and electrically connected to the drive unit; the drive unit receives a signal from the sensing unit, opens and drives the internal pressure unit to move towards the inner tank, so that the internal pressure unit squeezes the space of the inner tank and pushes the waste oil floating on the surface of the sewage to overflow the inner tank.

[0008] By adopting the above technical solution, the cover is connected to the outer tank, and the inner pressure column is inserted into the inner tank. The electric pump starts to activate the suction, and the waste oil and attached sewage are transported into the inner tank through the oil suction gun and oil suction pipe. When the sensing unit detects that the liquid volume in the inner tank reaches the liquid point, it sends an electrical signal to the driving unit. The output end of the driving unit drives the inner pressure unit to descend to the corresponding liquid point in the inner tank. The liquid is squeezed by the inner pressure unit and loses its storage space, causing the water level to gradually rise. Since the density of oil is less than that of water, the waste oil will float on the surface of the sewage. When the water level gradually rises to the opening of the inner tank, the oil floating on the surface will overflow and flow into the inner tank, thereby achieving the effect of oil-water separation.

[0009] Optionally, the internal pressure section may also include a first heating section.

[0010] By adopting the above technical solution, the first heating part can heat the inner pressure part in a low-temperature environment, and melt the solidified waste oil when the inner pressure part comes into contact with the liquid, so that the waste oil is discharged from the inner tank first along with the rising water level of sewage and other liquids, ensuring the stability of oil-water separation.

[0011] Optionally, the outer wall of the inner tank is further provided with an oil guiding part, and the oil guiding part is located at the opening of the inner tank; an oil separating part is provided inside the outer tank, the oil separating part surrounds the inner tank, and the oil guiding part covers the oil separating part.

[0012] By adopting the above technical solution, when the liquid in the inner tank is squeezed by the internal pressure section and gradually rises, causing the waste grease floating on the surface of the liquid to overflow, the grease is guided to the outer tank through the oil guide section. At the same time, the outer tank is equipped with an oil separator to cover the inner tank, so as to prevent the grease from sticking to the outer surface of the inner tank when stored in the outer tank, affecting the hygiene of use and improving the convenience of cleaning.

[0013] Optionally, the interior of the internal pressure section is hollow.

[0014] By adopting the above technical solution, the hollow internal pressure section can reduce the overall weight of the internal pressure section, making the entire oil suction device lighter.

[0015] Optionally, the oil suction gun includes a grip, an oil suction part, an extension part, a sliding part, a pushing part, and a rotating part; the grip is connected to the oil suction tube; the oil suction part is connected to the grip at one end away from the oil suction tube and at the other end; the extension part is slidably connected to and connected to the oil suction part; the sliding part is slidably connected to the grip; one end of the pushing part is movably connected to the sliding part, and the other end is movably connected to the extension; the rotating part is movably connected to the end of the sliding part away from the oil suction part, and the rotating part is securely connected to the grip under rotation.

[0016] By adopting the above technical solution, when it is necessary to change the suction range of the oil suction part, the rotating part is pushed, causing the rotating part to drive the sliding part to move away from the oil suction part. At the same time, the sliding part pulls the expansion part through the pushing part, causing the expansion shell to move along the oil suction part towards the oil suction part according to the pushing direction, so as to expand or contract the expansion shell, thereby expanding or shrinking the suction range of the oil suction part. After the expansion or shrinkage is determined, the rotating part is rotated and fixed to the holding part.

[0017] Optionally, the extension portion is provided with a protrusion; the oil-absorbing portion is provided with an inner protrusion, and the inner protrusion restricts the travel path of the protrusion.

[0018] By adopting the above technical solution, when the extension part is about to separate from the oil suction part along both ends of the oil suction part, the inner protrusion blocks the protrusion, thus preventing the extension part from separating from the oil suction part.

[0019] Optionally, the rotating part has an internal thread, the gripping part has an external thread, and the rotating part is screwed to the gripping part.

[0020] By adopting the above technical solution, the rotating part can be moved along the gripping part to the position of the external thread, and then screwed into the external thread through the internal thread for screwing and fixing. This method can more conveniently fix the position of the rotating part and other components, and the fixing effect is more stable.

[0021] Optionally, the gripping part is further provided with an elastic part; the elastic part is sleeved on the gripping part, and one end is connected to the sliding part.

[0022] By adopting the above technical solution, the elastic part can apply an elastic pulling force to the sliding part in the direction of the oil suction part at any time. When the rotating part is released from the fastening action, the sliding part can be pressed against the oil suction part by the action of the elastic part without moving the rotating cylinder. This will drive the pushing part to expand the extension part along the oil suction part. The elastic force will eliminate the need for further fastening by the rotating part, and the extension part can be used to achieve the function of conveniently unfolding the extension part.

[0023] Optionally, the extension may further include a second heating element, located at the end of the extension away from the gripping element.

[0024] By adopting the above technical solution, the second heating unit can heat and melt the solidified waste oil at the suction point during the suction process, so as to ensure that the waste oil can be suctioned stably.

[0025] Optionally, the oil suction gun further includes a screen portion, which is installed at the connection between the grip portion and the oil suction portion.

[0026] By adopting the above technical solution, the mesh section can block foreign objects or debris from entering the oil suction gun, reducing the likelihood of the oil suction gun becoming clogged.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. Connect the cover to the outer tank, insert the inner pressure column into the inner tank, start the electric pump to activate the suction, and transport the waste oil and attached sewage into the inner tank through the oil suction gun and oil suction pipe. When the sensing unit detects that the liquid volume in the inner tank has reached the liquid point, it sends an electrical signal to the drive unit. The output end of the drive unit drives the inner pressure unit to descend to the corresponding liquid point in the inner tank. The liquid is squeezed by the inner pressure unit and loses its storage space, causing the water level to gradually rise. Since the density of oil is less than that of water, the waste oil will float on the surface of the sewage. When the water level gradually rises to the opening of the inner tank, the oil floating on the surface will overflow and flow into the inner tank, thereby achieving the effect of oil-water separation.

[0029] 2. The first heating section can heat the inner pressure section in a low-temperature environment, and melt the solidified waste oil when the inner pressure section comes into contact with the liquid. This allows the waste oil to be discharged from the inner tank first along with the rising water level of sewage and other liquids, ensuring stable oil-water separation.

[0030] 3. When the liquid inside the inner tank is squeezed by the internal pressure section and gradually rises, causing the waste grease floating on the surface of the liquid to overflow, the grease is guided to the outer tank through the oil guide section. At the same time, the outer tank is equipped with an oil separator to cover the inner tank, so as to prevent the grease from sticking to the outer surface of the inner tank when stored in the outer tank, affecting the hygiene of use and improving the convenience of cleaning.

[0031] 4. When it is necessary to change the suction range of the oil suction part, push the rotating part to move the sliding part away from the oil suction part. At the same time, the sliding part pulls the expansion part through the pushing part, so that the expansion shell moves along the oil suction part towards the oil suction part according to the pushing direction, so as to expand or contract the expansion shell, thereby expanding or shrinking the suction range of the oil suction part. After the expansion or shrinkage is determined, the rotating part is rotated and fixed to the holding part. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural schematic diagram of the oil suction device in one embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the first partial cross-sectional structure of the tank in the embodiments of this application;

[0034] Figure 3 This is a schematic diagram of a second partial cross-sectional structure of the tank in an embodiment of this application;

[0035] Figure 4 This is a three-dimensional structural diagram of the inner tank in an embodiment of this application;

[0036] Figure 5 This is a three-dimensional structural diagram of the first type of oil suction gun in the embodiments of this application;

[0037] Figure 6 This is a three-dimensional structural diagram of the extended portion and the oil-absorbing portion separated in an embodiment of this application;

[0038] Figure 7 This is a schematic diagram of the second three-dimensional structure of the oil suction gun in the embodiments of this application;

[0039] Figure 8 This is a top view of the structure of the extension section in the embodiments of this application.

[0040] Figure 9 This is a three-dimensional structural diagram of the extension part in an embodiment of this application;

[0041] Figure 10 This is a schematic diagram of the right-side structure of the oil-absorbing part in an embodiment of this application;

[0042] The labels in the attached diagram are as follows: 1. Tank body; 11. Outer tank; 111. Oil separator; 12. Inner tank; 121. Oil guide; 13. Cover; 14. Internal pressure section; 141. First heating section; 15. Drive section; 16. Sensing section; 2. Electric pump; 3. Oil suction pipe; 4. Oil suction gun; 41. Holding section; 411. Elastic section; 42. Oil suction section; 421. Inner protrusion; 43. Extension section; 431. Protrusion; 432. Second heating section; 44. Sliding section; 45. Pushing section; 46. Rotating section; 47. Mesh section. Detailed Implementation

[0043] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand other advantages and effects of this application from the information disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0044] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0045] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.

[0046] Furthermore, the terms "first" and "second" are used only to indicate an objective and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0047] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0048] The following is in conjunction with the appendix Figure 1 - Appendix Figure 10 This application will be described in further detail below.

[0049] This application discloses a waste cooking oil absorption device.

[0050] A waste cooking oil absorption device, in one embodiment, refers to... Figure 1 The system includes a tank 1, a support base, an electric pump 2, an oil suction pipe 3, and an oil suction gun 4. The tank 1 is installed on the support base and is used to store grease. The tank 1 can be a metal tank or a plastic tank, and the tank 1 can have an outlet for grease removal. A tank cover can be installed on the outlet. The support base is used to provide storage for the tank 1. A vent hole can be opened on the tank cover to prevent changes in the pressure inside the tank 1 from affecting the suction of waste grease.

[0051] Electric pump 2 is installed on tank 1. Electric pump 2 is used to provide the driving source for the suction of waste oil. Electric pump 2 can be set on the inner wall of tank 1 or the outer wall of tank 1. When set on the inner wall of tank 1, electric pump 2 can be concealed and protected by tank 1. When set on the outside of tank 1, it is convenient for maintenance or cleaning. Therefore, the specific setting point is not limited here.

[0052] The oil suction pipe 3 is connected to the tank 1 via the electric pump 2. The electric pump 2 is connected to the tank 1, and the oil suction pipe 3 is connected to the input end of the electric pump 2. When the electric pump 2 is pumping, the oil suction pipe 3 is connected to the tank 1. The oil suction pipe 3 can be made of metal hose. Since the metal hose has the function of high temperature resistance, even if the temperature of the waste oil is high, it will not affect the delivery of the oil suction pipe 3.

[0053] The oil suction gun 4 is installed at the end of the oil suction pipe 3 away from the tank 1. The oil suction gun 4 is designed to provide a gripping structure for the user. After the nozzle of the oil suction gun 4 comes into contact with the waste oil, the electric pump 2 provides suction to draw out the oil, which then enters the oil suction pipe 3 through the oil suction gun 4 and then enters the tank 1 through the electric pump 2.

[0054] The bottom of the support base is equipped with a movable part, which can be a movable wheel or a caster wheel. Taking the movable wheel as an example, the oil suction device can be moved easily as a whole by the movable wheel.

[0055] Among them, reference Figure 1 and Figure 2 As shown, the tank body 1 includes an outer tank 11, an inner tank 12, a cover 13, an inner pressure part 14, a driving part 15, and a sensing part 16; the inner tank 12 is located inside the outer tank 11, and the inner tank 12 is detachably connected to the inner bottom of the outer tank 11, such as by screwing. A stud is provided at the outer bottom of the inner tank 12, and a screw hole is opened at the inner bottom of the outer tank 11, so that the inner tank 12 can be screwed to the inner bottom of the outer tank 11 through the stud and the screw hole.

[0056] The height of the inner tank 12 is lower than that of the outer tank 11. The oil suction pipe 3 passes through the outer tank 11 and connects with the inner tank 12. The outer diameter of the inner tank 12 is smaller than the inner diameter of the outer tank 11, creating a storage space between the inner tank 12 and the outer tank 11. This forms two storage points: one inside the inner tank 12 and the other between the inner tank 12 and the outer tank 11. The oil suction pipe 3 directly passes through the outer tank 11 and connects with the inner tank 12, allowing it to directly discharge waste oil into the inner tank 12. The waste oil contains not only oil but also mixed wastewater. Therefore, the storage space of the inner tank 12 is a wastewater storage space, while the storage space between the inner tank 12 and the outer tank 11 is a grease storage space.

[0057] The lid 13 is detachably connected to the outer can 11. The lid 13 can be a closed lid with a handle, which makes it easy to lift the entire can 1. When it is necessary to go up stairs or other situations, the can 1 can be lifted and moved. The connection between the closed lid and the outer can 11 can be screwed or snapped.

[0058] The drive unit 15 is installed on the cover 13, and the output end is aligned with the inner tank 12. The drive unit 15 can be an electric cylinder, an electric push rod, a pneumatic cylinder, a hydraulic cylinder, etc. In this embodiment, a pneumatic cylinder is used as an example. The pneumatic cylinder is located below the cover 13, that is, close to a plane of the inner tank 12. The number can be more than one. When the installation space required for the pneumatic cylinder is insufficient, it can be installed by extending outward through the cover 13. When there is more than one pneumatic cylinder, all pneumatic cylinders operate synchronously. In this embodiment, two pneumatic cylinders are used as an example. When the cover 13 is closed, the output end of the pneumatic cylinder is located above the inner tank 12.

[0059] The internal pressure section 14 is connected to the output end of the drive section 15. The internal pressure section 14 can be an internal pressure column, which is connected to the output end of the cylinder. After the cover 13 is connected to the outer tank 11, the internal pressure column is located at the opening of the inner tank 12, and the outer diameter of the internal pressure column is smaller than the inner diameter of the inner tank 12.

[0060] The sensing unit 16 is installed on the inner wall of the inner tank 12. The sensing unit 16 can be a liquid level sensor. The liquid level sensor can be matched with a controller and electrically connected to it. The controller can be set outside the cover 13.

[0061] The liquid level sensor can be detachably connected to the inner wall of the inner tank 12. For example, a slot can be opened at the opening of the inner tank 12, and an L-shaped plug can be set behind the liquid level sensor. The L-shaped plug matches the slot opening. When the L-shaped plug is inserted into the slot, the L-shaped plug is locked in the slot, so that the liquid level sensor is connected to the inner wall of the inner tank. When it needs to be removed, the liquid level sensor can be pulled out along the slot for maintenance, replacement or cleaning. The output end of the liquid level sensor is located at the bottom of the inner tank 12, and the liquid level is detected by the pressure difference between the liquid and the water level.

[0062] An indicator light is provided on the lid 13. When the liquid level is about to reach the full state, the liquid level sensor at the can opening sends an electrical signal to the indicator light, and the indicator light lights up to remind the user that the liquid in the inner can 12 needs to be emptied.

[0063] The liquid level sensor is electrically connected to the cylinder, enabling the sensor to transmit an electrical signal to the cylinder. The cylinder extends its output end based on the electrical signal, and controls the extension length of the cylinder output end according to the amount of liquid in the inner tank 12, i.e., the liquid level in the inner tank 12. This controls the volume of the inner pressure column extending into the inner tank 12. In this embodiment, the height of the inner tank 12 is divided into ten liquid level points. When the liquid level reaches the tenth liquid level point, an electrical signal is sent to the cylinder, and the cylinder output end drives the inner pressure column to extend into the next liquid level point near the bottom of the inner tank 12. When the liquid level exceeds the tenth liquid level point, an electrical signal is sent to the indicator light to remind the user to clean the liquid in the inner tank 12. The specific liquid level points can be set according to the volume and height of the inner tank 12 and the separation requirements. The number and spacing of the liquid level points mentioned above are for reference only and are not limited here.

[0064] If a controller is set, all electrical signals from the level sensor will be transmitted to the controller, which will then issue control commands to the cylinder and indicator lights. The controller will control the extension length of the cylinder output and the opening and closing of the indicator lights.

[0065] Specifically, the cover 13 is connected to the outer tank 11, so that the inner pressure column is located at the opening of the inner tank 12. Then, the liquid level sensor is activated. When the oil suction device moves to the location to be suctioned, the electric pump 2 starts to provide suction, transporting waste oil and attached sewage into the inner tank 12 through the oil suction gun 4 and the oil suction pipe 3. As the liquid in the inner tank 12 gradually increases, when the liquid level sensor detects that the liquid level in the inner tank 12 has reached the liquid level point, it sends an electrical signal to the cylinder. The cylinder output drives the inner pressure column to descend into the inner tank 12. At the corresponding liquid level point, as the internal pressure column continues to descend, with the volume of the inner tank 12 remaining constant, the liquid is squeezed by the internal pressure column, losing its storage space and causing the water level to gradually rise. Since the density of grease is less than that of water, the grease will float on the surface of the wastewater. When the water level gradually rises to the opening of the inner tank 12, the grease floating on the surface will overflow and flow into the outer tank 11, thereby achieving the function of oil-water separation. Depending on the location of each liquid level point, the downward pressure depth and downward pressure volume of the internal pressure column are different to adapt to the continuously drawn-in liquid.

[0066] When the inner tank 12 is full, the lid 13 can be separated from the outer tank 11, and then the inner tank 12 and the outer tank 11 can be separated from each other, so that the sewage in the inner tank 12 and the waste oil in the outer tank 11 can be collected separately.

[0067] In some embodiments, reference Figure 3 As shown, the inner pressure section 14 is also provided with a first heating section 141. The first heating section 141 can be a heating tube, a heating plate or a heating wire. Taking the heating tube as an example, the heating tube is arranged in a ring at the bottom of the inner pressure column or the bottom of the outer side. In this embodiment, the heating tube is arranged at the bottom of the inner pressure column as an example.

[0068] The inner pressure column can be hollow, which reduces the amount of material used and the overall weight. The internal space created by the hollow design allows for the installation of heating pipes, which can heat the inner pressure column. When encountering a low-temperature environment, waste oil solidifies on the surface of sewage and is difficult to separate with the rising sewage. Therefore, when the waste oil enters the inner tank 12 through the inner pressure column, it comes into contact with the liquid and melts the waste oil. As a result, the waste oil is discharged from the inner tank 12 first with the rising liquid level and flows to the outer tank 11 for storage.

[0069] The heating effect of the first heating unit 141 melts the solidified waste grease in the inner tank 12, so as to ensure more stable separation during oil-water separation.

[0070] In some embodiments, reference Figure 4As shown, the outer wall of the inner tank 12 is also provided with an oil guiding part 121, and the oil guiding part 121 is located at the opening of the inner tank 12. The shape of the oil guiding part 121 is consistent with the shape of the opening of the inner tank 12. If the opening of the inner tank 12 is circular, the oil guiding part 121 can be an annular oil guiding plate. The oil guiding plate is inclined from the opening of the inner tank 12 towards the bottom corner of the outer tank 11, and the inclination angle is less than 90 degrees.

[0071] An oil-separating part 111 is provided inside the outer tank 11. The oil-separating part 111 surrounds the inner tank 12, and the oil-guiding part 121 blocks the oil-separating part 111. The oil-separating part 111 can be an annular plate with an inner diameter matching the outer diameter of the inner tank 12 to isolate the outer tank 11 from the inner tank 12. The inner tank 12 is inserted into the isolation space inside the annular plate, and the height of the annular plate is lower than that of the oil-guiding part 121.

[0072] Specifically, when the liquid in the inner tank 12 is squeezed by the inner pressure column and gradually rises, causing the waste grease floating on the surface of the liquid to overflow, the grease is guided to the outer tank 11 by the oil guide plate. At the same time, the outer tank 11 is equipped with an annular plate to cover the inner tank 12, so as to prevent the grease from sticking to the outer surface of the inner tank 12 when stored in the outer tank 11, which would affect the hygiene of use and improve the convenience of cleaning.

[0073] In some embodiments, reference Figure 5 As shown, the oil suction gun 4 includes a gripping part 41, an oil suction part 42, an extension part 43, a sliding part 44, a pushing part 45, and a rotating part 46; the gripping part 41 is connected to the oil suction pipe 3, and the gripping part 41 can be a straight metal pipe to provide a gripping function. The straight metal pipe and the flexible metal pipe are connected to each other, and the two can be connected by a pipe fitting.

[0074] The oil-absorbing part 42 is connected to the other end of the holding part 41. The oil-absorbing part 42 can adopt a flat square oil-absorbing head. The flat square oil-absorbing head can more easily absorb waste oil in the crevices. The flat square head is connected to the end of the metal straight tube away from the metal hose. Both ends of the oil-absorbing head are provided with suction ports. One suction port is connected to the metal straight tube, and the other suction port is used to absorb waste oil.

[0075] The extension part 43 is slidably connected to the oil suction part 42. The extension part 43 can be an extension shell, which can be a triangular shell with a hollow interior forming a suction space. The suction space is connected to the suction port of the oil suction part 42 at the end away from the metal straight tube. At the same time, the extension shell can slide along the inner wall of the oil suction part 42. A limiting groove can be opened on the inner wall of the oil suction head. A limiting block (not shown in the figure) can be set inside the extension shell. The extension shell can only move along the limiting groove through the limiting block. After sliding, the size of the suction space can be changed. Since the suction space is connected to the suction port, the expansion or contraction of the suction port can be adjusted by changing the suction space.

[0076] The sliding part 44 is slidably connected to the holding part 41. The sliding part 44 can be a sliding sleeve or a sliding ring. Taking the sliding ring as an example, the inner diameter of the sliding ring is consistent with the outer diameter of the metal straight tube. Therefore, when it is sleeved on the metal straight tube, it can slide along the outer surface of the metal straight tube.

[0077] One end of the pushing part 45 is movably connected to the sliding part 44, and the other end is movably connected to the expansion part 43. The pushing part 45 can be a pushing rod, and the movable connection at both ends of the pushing rod can be hinged. By hinged one end of the pushing rod to the sliding ring and the other end to the outer surface of the expansion shell, the sliding ring can drive the pushing rod to move when it moves along the straight metal tube. During the movement, the expansion can be moved to change the position of the expansion shell, thereby adjusting the size of the suction port and adjusting the suction range.

[0078] The rotating part 46 is movably connected to the sliding part 44 at the end away from the oil suction part 42, and the rotating part 46 is tightly connected to the holding part 41 under the action of rotation. The rotating part 46 can be a rotating cylinder, which is sleeved on the metal straight tube. Another limiting groove (not shown in the figure) can be opened at one end of the sliding ring. The rotating cylinder is inserted into the limiting groove and can rotate along the limiting groove. A slot can be set on the metal straight tube, and the slot is provided with two branch slots perpendicular to the extension direction of the metal straight tube at 90 degrees. The branch slots correspond to locking the expansion shell to unfold or retract. A locking block is opened on the rotating cylinder. When the rotating cylinder drives the sliding ring to move to any molecular groove, the rotating cylinder is rotated so that the locking block on the rotating cylinder enters the branch groove, thereby restricting the movement path of the rotating cylinder and the sliding ring along the metal straight tube. The position of the expansion shell is determined according to the branch groove entered.

[0079] Specifically, when it is necessary to reduce the suction range of the suction port, the rotating cylinder is pushed. The rotating cylinder moves along the slot through the locking block, and the rotating cylinder drives the sliding ring to move away from the oil suction part 42. At the same time, the sliding ring pulls the expansion shell through the push rod, causing the expansion shell to move along the inner wall of the oil suction part 42 towards the center of the oil suction part 42, until the locking block reaches the branch groove, and the expansion shell coincides with the oil suction part 42, so as to reduce the suction port to the original size of the oil suction head. Then, the rotating cylinder is rotated to make the locking block enter the branch groove and lock through the branch groove. The locking block restricts the rotating cylinder, sliding ring, push rod, and expansion shell, thereby achieving a fixed-point locking effect. Conversely, when it is necessary to expand the suction range of the suction port, the rotating cylinder is rotated to make the locking block rotate from the branch groove to the locking groove. Then, the rotating cylinder is pushed along the locking groove towards the oil suction part 42 until the locking block reaches another branch groove. Then, the locking block is locked into the branch groove by rotating the rotating cylinder, thereby causing the sliding ring to drive the push rod to push the expansion shell to both sides of the suction head to unfold the expansion shell and thus expand the suction range of the suction port.

[0080] Further reference Figure 6As shown, the extension part 43 is provided with a protrusion 431, and the oil-absorbing part 42 is provided with an inner protrusion 421. The inner protrusion 421 restricts the travel path of the protrusion 431. When the extension part 43 wants to separate from the oil-absorbing part 42 along both ends of the oil-absorbing part 42, the inner protrusion 421 blocks the protrusion 431 to prevent the extension part 43 from separating from the oil-absorbing part 42.

[0081] Further reference Figure 7 As shown, the rotating part 46 has an internal thread (not shown in the figure because it is located inside the rotating part 46), and the gripping part 41 has an external thread. The rotating part 46 and the gripping part 41 are screwed together. Specifically, the internal thread is opened on the inner wall of the rotating cylinder, and the metal straight tube has an external thread. The external thread is opened at both ends of the metal straight tube (one end is blocked by the rotating part 46 and is not shown).

[0082] When the rotating cylinder moves the sliding ring to the position of the external thread, the rotating cylinder is rotated so that it is screwed onto the metal straight tube through the internal and external threads to fix the position of the rotating cylinder, the sliding ring, the push rod, and the expansion shell. Conversely, when the position of the rotating cylinder needs to be adjusted, the rotating cylinder is rotated in the opposite direction so that it is disengaged from the metal straight tube through the internal and external threads. Then it can be moved along the metal straight tube to the position with another set of external threads, and then screwed into the external threads for fixing. This method can more conveniently fix the position of the rotating cylinder and other components, and the fixing effect is more stable compared to the method of using slots and blocks.

[0083] In some embodiments, reference Figure 8 As shown, the gripping part 41 is also provided with an elastic part 411. The elastic part 411 is sleeved on the gripping part 41, and one end is connected to the sliding part 44. The elastic part 411 can be a compression spring. Specifically, the compression spring is sleeved on the outer wall of the metal straight tube, and one end is connected to the sliding ring. The other end can be connected to the end of the metal sleeve away from the metal hose, or it can be connected to the oil suction part 42, or it can not be directly connected. A convex ring is provided at the oil suction part 42 to block the release path of the compression spring.

[0084] The compression spring can apply an elastic pulling force to the sliding ring in the direction of the oil suction part 42 at any time. When the rotating cylinder is disengaged, the sliding ring can be pressed against the oil suction part 42 by the compression spring without moving the rotating cylinder. This will drive the push rod to expand the expansion shell along the oil suction part 42. Due to the elastic effect, it can be used without further fixing by the rotating cylinder, so as to achieve the function of conveniently unfolding the expansion shell. When it is necessary to retract the expansion shell, the rotating cylinder is manually pulled to the locking position, such as the branch groove or external thread at the end away from the oil suction part 42, to lock the sliding ring.

[0085] In some embodiments, reference Figure 9As shown, the extension part 43 is also provided with a second heating part 432, which is located at the end of the extension part 43 away from the grip part 41. The second heating part 432 can be a heating plate, a heating tube, or a heating element. In this embodiment, a heating plate is used as an example. The heating plate is made of heating material, such as metals such as copper, nickel, and tungsten, or alloys such as chromium, iron, aluminum, and tungsten. The heating material generates a thermal effect under the action of electricity, converting electrical energy into heat energy. The heating plate is fixedly installed on the extension shell on one side of the suction port. It is mainly used to melt solidified waste grease in a low-temperature environment. The control switch of the heating plate can be located on the metal straight tube, and a battery pack or a removable battery pack can be additionally provided to provide power supply.

[0086] Specifically, after the heating plate is powered on by the switch, the heating plate generates high temperature heat. The oil suction part 42 is moved to the location to be suctioned through the straight metal tube. The high temperature generated by the heating plate melts the solidified waste oil into a liquid state. When the electric pump 2 generates suction, the liquid waste oil can be absorbed into the tank 1 to ensure stable recycling.

[0087] In some embodiments, reference Figure 10 As shown, the oil suction gun 4 also includes a screen part 47. Specifically, the screen part 47 is provided at the connection between the oil suction part 42 and the metal straight tube. The screen part 47 and the metal straight tube are detachably connected, such as by screwing. For example, the screen part 47 includes a partition cylinder and a mesh. The mesh is wrapped on the partition cylinder. External threads are opened on the outer wall of the partition cylinder, and internal threads are opened on the inner wall of the metal straight tube. The partition cylinder can be screwed to the inner wall of the metal straight tube through the internal and external threads. This kind of detachable connection makes it convenient to maintain, clean or replace the screen part 47.

[0088] Specifically, when the electric pump 2 is turned on, there will be some foreign objects or debris at the waste oil collection point. Some lighter foreign objects or debris will be affected by the suction and enter the oil suction section 42. After the mesh section 47 is installed, it can prevent foreign objects or debris from entering the metal straight pipe and reduce the blockage of the metal straight pipe. After the electric pump 2 is stopped, the foreign objects or debris that are no longer affected by the suction will fall out. After long-term and repeated use, the mesh section 47 will accumulate various dirt or foreign objects, such as hair and thread, which will be wrapped around the mesh section 47. Therefore, the mesh section 47 can be replaced or cleaned.

[0089] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A kitchen waste oil suction device, comprising a tank (1), an electric pump (2), an oil suction pipe (3), and an oil suction gun (4); wherein the electric pump (2) is installed in the tank (1), and the oil suction pipe (3) is connected to the tank through the electric pump (2); the oil suction gun (4) is connected to the electric pump (2) through the oil suction pipe (3), characterized in that, in, The tank (1) includes an outer tank (11), an inner tank (12), a cover (13), an internal pressure unit (14), a drive unit (15), and a sensing unit (16); the inner tank (12) for storing sewage is connected to the outer tank (11) for storing waste oil, the inner tank (12) is located inside the outer tank (11), and the height of the inner tank (12) is lower than the height of the outer tank (11), and there is a space for grease to be contained between the outer wall of the inner tank (12) and the inner wall of the outer tank (11); the oil suction pipe (3) passes through the outer tank (11) and communicates with the inner tank (12); the cover (13) is connected to the outer tank (11) 1) Detachable connection; the drive unit (15) is installed on the cover (13), and its output end is aligned with the inner tank (12); the internal pressure unit (14) is connected to the output end of the drive unit (15), and the cross-section of the internal pressure unit (14) is smaller than the inner diameter of the inner tank (12); the sensing unit (16) is installed on the inner tank (12) and electrically connected to the drive unit (15); the drive unit (15) receives a signal from the sensing unit (16) and opens and drives the internal pressure unit (14) to move toward the inner tank (12), so that the internal pressure unit (14) squeezes the space of the inner tank (12), causing the floating sewage surface to be squeezed. Waste grease is pressed up until it overflows from the inner tank (12); the oil suction gun (4) includes a grip (41), an oil suction part (42), an extension part (43), a sliding part (44), a pushing part (45), and a rotating part (46); the grip (41) is connected to the oil suction pipe (3); the oil suction part (42) is connected to the end of the grip (41) away from the oil suction pipe (3); the extension part (43) is slidably connected to the oil suction part (42) and is connected to the oil suction part (42); the sliding part (44) is slidably connected to the grip (41); one end of the pushing part (45) is connected to the sliding part (46). 4) Movable connection, the other end is movably connected to the extension part (43); the rotating part (46) is movably connected to the sliding part (44) at the end away from the oil-absorbing part (42), and the rotating part (46) is tightly connected to the gripping part (41) under the action of rotation; the oil-absorbing part (42) adopts a flat square oil-absorbing head, and both ends of the oil-absorbing head are provided with suction ports; the extension part (43) adopts a triangular extension shell, and the interior is hollow and recessed to form a suction space, the suction space is connected to the suction port at the end of the oil-absorbing part (42) away from the gripping part (41), and the size of the suction space is changed after the extension part (43) slides to adjust the size of the suction port;The gripping part (41) has a slot with two branch slots perpendicular to the extension direction of the gripping part (41) at 90 degrees. The rotating part (46) has a locking block. Rotating the rotating part (46) causes the locking block to enter the branch slot, thereby restricting the movement path of the rotating part (46) and the sliding part (44) along the gripping part (41). The two branch slots respectively lock the expansion part (43) to unfold or retract. The position of the expansion shell and the size of the suction port after adjustment are determined according to the branch slot into which the locking block enters.

2. The kitchen waste oil absorption device according to claim 1, characterized in that, The internal pressure section (14) is also provided with a first heating section (141).

3. The kitchen waste oil absorption device according to claim 1, characterized in that, The outer wall of the inner tank (12) is also provided with an oil guiding part (121), and the oil guiding part (121) is located at the opening of the inner tank (12); the outer tank (11) is provided with an oil separating part (111), the oil separating part (111) wraps the inner tank (12), and the oil guiding part (121) blocks the oil separating part (111).

4. The kitchen waste oil absorption device according to claim 1, characterized in that, The interior of the internal pressure section (14) is hollow.

5. The kitchen waste oil absorption device according to claim 1, characterized in that, The extension (43) is provided with a protrusion (431); the oil-absorbing part (42) is provided with an inner protrusion (421), and the inner protrusion (421) restricts the travel path of the protrusion (431).

6. The kitchen waste oil absorption device according to claim 1, characterized in that, The rotating part (46) has an internal thread, and the gripping part (41) has an external thread. The rotating part (46) and the gripping part (41) are screwed together.

7. The kitchen waste oil absorption device according to claim 1, characterized in that, The gripping part (41) is also provided with an elastic part (411); the elastic part (411) is sleeved on the gripping part (41), and one end is connected to the sliding part (44).

8. The kitchen waste oil absorption device according to claim 1, characterized in that, The extension (43) is further provided with a second heating part (432), which is located at the end of the extension (43) away from the gripping part (41).

9. The kitchen waste oil absorption device according to claim 1, characterized in that, The oil suction gun (4) also includes a mesh part (47), which is installed at the connection between the grip part (41) and the oil suction part (42).

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