Kitchen waste treatment device

Abstract

The invention relates to the technical field of garbage crushing treatment, in particular to a kitchen garbage treatment device, a crushing barrel comprises an inner barrel and an outer barrel which are nested, a slurry discharge cavity is formed between the outer barrel and the inner barrel, the bottom of the inner barrel is communicated with a feeding pipe, and the top of the inner barrel is communicated with a discharging pipe. And a spiral crushing mechanism is arranged in the inner cylinder. Filter holes are formed in the side wall of the inner cylinder, and a settling tank is arranged below the crushing cylinder. An overflow port at the upper part of the settling tank is communicated with an inlet of the heating tank. One end of the spiral deslagging mechanism is inserted into the settling tank, and the other end of the spiral deslagging mechanism extends out of the settling tank in an upward inclined direction. A first inlet and a second inlet are formed in the top end of the settling tank; the second inlet is positioned above the highest end of the spiral deslagging mechanism in the settling tank. The first inlet communicates with the bottom end of the slurry discharging cavity, and the second inlet communicates with the discharging pipe. The spiral deslagging mechanism comprises a first section and a second section which are spliced in the axial direction, and the first section is lower than the second section. And the first section can translate along the axial direction of the first section so as to be butted with or separated from the contact with the second section.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of garbage crushing treatment, and particularly relates to a kitchen garbage treatment device. BACKGROUND

[0002] Kitchen garbage has the characteristics of high oil content, water content, salt content and organic matter content. Kitchen garbage is prone to corruption, deterioration, odor emission and breeding of pathogenic microorganisms, and needs to be quickly and effectively treated, otherwise it will cause serious pollution to the environment. The related technical scheme provides an integrated garbage treatment device. The treatment device first crushes kitchen garbage through a pulping crusher and outputs inorganic solid residues and organic slurry from different outlets, respectively, and then sends the organic slurry to a sedimentation tank below the pulping crusher for separation of organic sediments and dirty liquid. Then the dirty liquid is heated and sent into a three-phase separator for oil extraction. The three-phase separator has an organic waste water outlet, an organic waste residue outlet and an oil outlet. Moreover, the solid waste residues are mainly concentrated in the pulping crusher and the sedimentation tank, and the waste residues output by the three-phase separator are less.

[0003] The inventor attempts to use a spiral conveying mechanism to simultaneously output the organic sediments in the sedimentation tank and the inorganic solid residues output by the pulping crusher upwardly so as to facilitate the conveying of the waste residues to a transfer vehicle. Even, the spiral conveying mechanism is used to simultaneously realize the output of the organic waste residues output by the three-phase separator.

[0004] However, when the garbage treatment device is just started, the separation degree of the organic sediments and the dirty liquid in the sedimentation tank is poor, the organic sediments output by the spiral conveying mechanism carry more water and mix with the inorganic solid residues above, and then the water content of the mixed solid waste residues is large. In addition, in some treatment scenarios, the organic solid residues and the inorganic sediments need to be separately conveyed to different compartments of the transfer vehicle, and a single spiral conveyor is difficult to separately convey different solid waste residues. SUMMARY

[0005] The present application provides a kitchen garbage treatment device, which can at least solve one of the above technical problems.

[0006] To solve the above technical problems, one or more embodiments of the present application provide a kitchen garbage treatment device, which comprises a pulping crusher having a vertical crushing cylinder, the crushing cylinder comprising an inner cylinder and an outer cylinder arranged in a nested manner, a pulp discharge cavity being formed between the outer cylinder and the inner cylinder, the inner cylinder being communicated with a feeding pipe at the bottom and with a discharging pipe at the top. A spiral crushing mechanism is arranged in the inner cylinder. The side wall of the inner cylinder is provided with filter holes, and a sedimentation tank is arranged below the crushing cylinder. An overflow port at the upper portion of the sedimentation tank is communicated with the inlet of a heating tank, the outlet of the heating tank is communicated with the inlet of an oil extraction device, and the oil extraction device has a solid residue outlet.

[0007] The screw slag discharging mechanism is inserted into the settling tank at one end and extends out of the settling tank in an upwardly inclined direction. The top end of the settling tank has a first inlet and a second inlet, the first inlet being above the lower end of the screw slag discharging mechanism in the settling tank, and the second inlet being above the highest end of the screw slag discharging mechanism in the settling tank. The first inlet is connected to the bottom end of the slurry discharge chamber, and the second inlet is connected to the discharge pipe. The screw slag discharging mechanism includes a first section and a second section which are connected in an axial direction, the first section being lower than the second section, and the lowest end of the second section being directly below the second inlet. The second section is connected to a rotating power source, and the first section is capable of moving in the axial direction of itself to be in contact with or separated from the second section.

[0008] The above one or more technical solutions have the following beneficial effects:

[0009] In the present scheme, the lower end of the screw slag discharging mechanism is inserted into the settling tank, and the other end extends out of the settling tank in an upwardly inclined direction. The first inlet of the settling tank is used for inputting organic slurry, and the second inlet is used for inputting inorganic solid slag. After the organic slurry is settled and stratified, the lower part of the organic sediment can be transported upward by the screw slag discharging mechanism, and the inorganic solid slag input through the second inlet can be directly transported upward by the screw slag discharging mechanism.

[0010] In the present scheme, the screw slag discharging mechanism includes two sections, the first section being lower than the second section. That is, when the device is just started and the water content of the organic sediment is relatively large, the first section can be separated from the second section by moving in the axial direction, so that the first section cannot further transport materials upward at this time, so as to separately output the inorganic solid slag by the screw slag discharging mechanism. When the inorganic solid slag is completely transported, the first section and the second section can be combined to separately transport the organic sediment. That is, the present scheme facilitates separate transportation of inorganic solid slag and organic sediment. When the organic sediment is settled and stratified and does not need to be output separately, the first section and the second section can be connected to form a whole, thereby improving the output efficiency of the solid slag in the settling tank. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is an overall structure axial side view of an embodiment of the present application;

[0012] Figure 2 It is a main view of the overall structure after removing the shell of an embodiment of the present application;

[0013] Figure 3 It is an axial side view of the overall structure after removing the shell of an embodiment of the present application;

[0014] Figure 4 It is a sectional view of a pulping crusher of an embodiment of the present application;

[0015] Figure 5 It is a schematic view of the cooperation of a pulping crusher, a settling tank and a screw slag discharging mechanism of an embodiment of the present application;

[0016] Figure 6 This is an axial view of the sedimentation tank after the top cover has been removed in an embodiment of the present invention;

[0017] Figure 7 This is a cross-sectional schematic diagram of the sedimentation tank and the spiral slag discharge mechanism in an embodiment of the present invention;

[0018] Figure 8 yes Figure 7 Enlarged structural diagram of section A;

[0019] Figure 9 yes Figure 7 Enlarged structural diagram of section B;

[0020] Figure 10 This is a cross-sectional schematic diagram of the first segment translating axially to separate from the second segment in an embodiment of the present invention;

[0021] Figure 11 yes Figure 10 Enlarged structural diagram of section C;

[0022] Figure 12 This is a schematic diagram of the structure of the partition plate with a force-bearing part in an embodiment of the present invention;

[0023] Figure 13 This is a schematic diagram of the second segment and the first segment moving upward to their extreme positions in an embodiment of the present invention;

[0024] Figure 14 for Figure 13 Enlarged structural diagram of section D.

[0025] In the diagram, 1. Outer shell; 2. Feed inlet; 3. Feeding hopper; 4. Pulping and crushing machine; 5. Screw discharge mechanism; 6. Heating tank; 7. Three-phase separator; 71. Pipeline; 8. Oil storage tank; 9. Sedimentation tank;

[0026] 41. Feed pipe; 42. Outer cylinder; 43. Drive motor; 44. Discharge pipe; 45. Inner cylinder; 46. Spiral crushing mechanism; 47. Slurry outlet; 48. Slurry discharge chamber; 51. Rotary motor; 52. First section; 521. Insert block; 522. Rotating sleeve; 523. First electric push rod; 53. Second section; 54. Second electric push rod; 91. Slag discharge port; 92. Overflow port; 93. Side wall; 94. First bottom wall; 95. Second bottom wall; 96. First inlet; 97. Second inlet; 971. Guide plate; 98. Partition plate; 981. Force plate; 99. Overflow trough; 910. Shell; 911. Support. Detailed Implementation

[0027] To make the technical features of the present application clear, the present application will be described in detail below with reference to the specific embodiments and the accompanying drawings.

[0028] Referring to Figures 1-14 A typical embodiment of the present application provides a kitchen waste treatment device, which comprises a pulping crusher 4 having a vertical crushing cylinder, the crushing cylinder comprising an inner cylinder 45 and an outer cylinder 42 arranged in a nested manner, a pulping chamber 48 being formed between the outer cylinder 42 and the inner cylinder 45, the bottom of the inner cylinder 45 being connected to a feeding pipe 41 and the top of the inner cylinder 45 being connected to a discharging pipe 44. A spiral crushing mechanism is arranged in the inner cylinder 45. The side wall of the inner cylinder 45 is provided with filter holes, and a sedimentation tank 9 is arranged below the crushing cylinder. The overflow port 92 of the upper portion of the sedimentation tank 9 is connected to the inlet of a heating tank 6, the outlet of the heating tank 6 is connected to the inlet of an oil extraction device, and the oil extraction device has a solid residue outlet.

[0029] The embodiment further comprises a spiral residue discharging mechanism 5, one end of which is inserted into the sedimentation tank 9 and the other end extends out of the sedimentation tank 9 in an upwardly inclined direction. The top end of the sedimentation tank 9 is provided with a first inlet and a second inlet, the first inlet being above the lower end of the spiral residue discharging mechanism 5 in the sedimentation tank 9, and the second inlet being above the highest end of the spiral residue discharging mechanism 5 in the sedimentation tank 9. The first inlet is connected to the bottom end of the pulping chamber, and the second inlet is connected to the discharging pipe 44. The spiral residue discharging mechanism 5 comprises a first segment 52 and a second segment 53 which are connected in an axial direction, the first segment 52 being lower than the second segment 53, and the lowest end of the second segment 53 being directly below the second inlet. The second segment 53 is connected to a rotating power source, and the first segment 52 is capable of moving along its own axial direction to be in contact with or separated from the second segment 53.

[0030] Referring to Figures 1-3 An outer shell 1 is arranged outside the entire treatment device, and forms a mounting cavity to shield the pulping crusher 4, the sedimentation tank 9, the heating tank 6 and other devices. It should be noted that in the present embodiment, the upper feeding bin 3 is used to supply material to the pulping crushing assembly, and the spiral residue discharging mechanism 5 is used to discharge material, so corresponding notches are formed on the outer shell 1 to at least expose the feeding port 2 of the upper end of the upper feeding bin 3 and the residue discharging port 91 of the spiral residue discharging mechanism 5.

[0031] When the kitchen waste just enters the lower part of the inner cylinder 45 from the feeding pipe 41, the waste is conveyed upward by the spiral crushing mechanism 46 in the inner cylinder 45 and is crushed at the same time, and part of the organic matters (such as vegetable leaves, fruit peels, etc.) will be stirred and crushed into slurry by the spiral crushing device, and the part of the slurry can pass through the filter hole of the inner cylinder 45 into the slurry discharge chamber, and finally fall into the sedimentation tank 9 below from the first inlet 96 under the action of gravity. Another part of the inorganic matters cannot form slurry even if they are crushed by the spiral crushing device, and the particle size of the crushed inorganic matters is large, so the inorganic solid residues cannot be discharged from the filter hole of the inner cylinder 45. With the rotation of the spiral crushing mechanism 46, the inorganic solid residues are extruded at the upper end of the inner cylinder 45 and are output from the discharge pipe 44, and enter the sedimentation tank 9 along the second inlet 97.

[0032] The slurry is precipitated in the sedimentation tank 9 to be stratified, the organic slurry in the sedimentation tank 9 is in the upper layer and overflows from the overflow port 92, and the organic sludge is precipitated at the bottom of the tank body to be output to the outside by the spiral discharge mechanism 5.

[0033] The upper layer clear liquid (organic slurry) in the sedimentation tank 9 is output from the sedimentation tank 9 through the overflow port 92, and then the organic slurry enters the heating tank 6 for heating. Specifically, an overflow groove 99 is arranged at the upper part of the sedimentation tank 9, and the overflow port 92 penetrates the side wall of the sedimentation tank 9 and communicates with the overflow groove 99.

[0034] As a specific structure, the number of heating tanks 6 is two, and the two heating tanks 6 are arranged in parallel between the sedimentation tank 9 and the oil extraction device, and then the feeding, heating or output of the organic slurry in the heating tank 6 is alternately completed.

[0035] When the organic slurry heated to 80-90℃ enters the oil extraction device, the oil extraction device separates the organic solid residues, organic wastewater and oil carried in the organic slurry by three-phase separation. The organic solid residues can be output through the spiral discharge mechanism 5. Specifically, an oil storage bin 8 for storing oil is arranged on one side of the oil extraction device.

[0036] Specifically, the oil extraction device here can adopt the three-phase separator 7 shown in the figure, and the specific structure and working principle of the three-phase separator 7 can be referred to the prior art, which will not be described here.

[0037] In combination with the above, the first inlet 96 of the sedimentation tank 9 is used to realize the input of organic slurry, and the second inlet 97 is used to realize the input of inorganic solid residue after the kitchen waste is crushed. That is, the main solid residue enters the sedimentation tank 9 through the first inlet and the second inlet respectively and is output by the spiral residue discharging mechanism 5. When the kitchen waste is being crushed, the organic sediment in the sedimentation tank 9 is not sufficiently precipitated, the spiral conveying mechanism is difficult to output the organic solid residue mixed with a large amount of water, and the organic sediment with a large water content and the inorganic solid residue are easily mixed, causing the overall water content of the solid residue output by the spiral residue discharging mechanism 5 to be large, which affects the carrying capacity of the subsequent transfer vehicle and the water tightness of the warehouse.

[0038] To solve the above problems, the kitchen waste treatment device in the embodiment has three working states, which are organic sediment output working state, inorganic solid residue output working state and mixed output working state.

[0039] When the inorganic solid residue output working state is needed: At this time, the influence of the organic sediment needs to be eliminated. Specifically, the first section 52 of the spiral residue discharging mechanism 5 is axially away from the second section 53, so that the two are out of the state of mutual insertion, the rotation of the second section 53 is no longer transmitted to the first section 52, and the first section 52 does not rotate. The second section 53 rotates alone and lifts the inorganic solid residue falling from the second inlet to the residue discharge port 91 for output. Further, in order to avoid the organic solid residue in the three-phase separator 7 from falling into the spiral conveying mechanism, a storage hopper can be arranged before the organic waste outlet of the three-phase separator 7 and the inlet of the spiral conveying mechanism, and a valve is arranged at the hopper.

[0040] When the organic sediment output working state is needed: At this time, the influence of the inorganic solid residue needs to be eliminated. First, stop feeding the pulping crusher 4, then close the second inlet 97, so that the discharge pipe temporarily stores the inorganic solid residue output from the inner cylinder 45. At this time, the first section 52 and the second section 53 are butted to form an integral structure that rotates together. At this time, the spiral residue discharging mechanism 5 rotates to lift the organic solid residue at the bottom of the sedimentation tank 9 and the organic sediment input from the three-phase separator 7, so as to be output from the residue discharge port 91.

[0041] In the mixed output working state, the first inlet 96 and the second inlet 97 and the oil extraction device are normally communicated with the conveying port of the spiral residue discharging mechanism 5. The organic solid residue in the sedimentation tank 9 enters the spiral residue discharging mechanism 5 from the first section 52, the inorganic solid residue output by the discharge pipe 44 enters the spiral residue discharging mechanism 5 from the lower end of the second section 53, and the organic solid waste residue output by the oil extraction device enters the spiral residue discharging mechanism 5 from the middle of the second section 53. The three parts of solid residue are lifted by the spiral residue discharging mechanism 5 and then output to the warehouse of the transfer vehicle through the residue discharge port output device.

[0042] Specifically, the spiral breaking mechanism includes a vertically arranged breaking shaft, a top end of the breaking shaft is driven by the driving motor 43, and a periphery of the breaking shaft is provided with breaking blades arranged in a spiral along a periphery.

[0043] In the embodiment, the second section 53 is capable of moving horizontally along an axis thereof and is fixed, a partition plate 98 is rotatably arranged on a side of the second inlet, the partition plate 98 is arranged between the first section 52 and the second section 53, the partition plate 98 is arranged above the spiral slag discharging mechanism 5, and at least part of a structure of the partition plate 98 is inserted between the spiral blades of the first section 52 and the second section 53; a lower end of the second inlet is provided with a shielding plate, and the partition plate 98 is capable of being rotated to be horizontal and cooperates with the shielding plate to block the second inlet.

[0044] Specifically, when the spiral slag discharging mechanism 5 is needed to be used to output inorganic solid slag, the partition plate 98 is capable of being rotated downward between the two blades of the spiral slag discharging mechanism 5. The arrangement can hinder the inorganic solid slag output by the second inlet from falling downward to a slurry position at a bottom of the settling tank 9, thereby avoiding the inorganic solid slag from being mixed with the slurry below.

[0045] Because the partition plate 98 needs to be adapted to a rotating shaft of the spiral slag discharging mechanism 5, an end thereof needs to have a semicircular notch, and the semicircular notch position is likely to affect the blocking of the second inlet when the partition plate 98 is rotated to be horizontal. At this time, the shielding plate can be embedded at the semicircular notch of the partition plate 98, thereby making the shielding plate cooperate with the partition plate 98 to block the second inlet, and avoiding the inorganic solid slag from entering the settling tank 9 and the spiral slag discharging mechanism 5 from the second inlet.

[0046] Specifically, in order to realize the horizontal movement of the first section 52 and the second section 53 along an axis thereof respectively, a first electric push rod 523 is arranged outside the first section, and a second electric push rod 54 is arranged outside the second section. The shell of the first electric push rod 523 is fixed with an outer wall of the settling tank 9, and the shell of the second electric push rod 54 is fixed with a shell of the uppermost end of the spiral slag discharging mechanism 5.

[0047] More specifically, in order to avoid the first electric push rod and the second electric push rod from affecting the rotation of the first section and the second section, an extending end of the first electric push rod is fixed with a rotating sleeve 522, and the rotating sleeve 522 is rotatably connected with a lower end of the first section. Similarly, an extending end of the second electric push rod is fixed with another rotating sleeve or a rotating plate, and the other rotating sleeve or the rotating plate is rotatably connected with an upper end of the second section.

[0048] In the embodiment, one end of the shielding plate close to a center of the second inlet is connected with a lower end of a guide plate 971, and an upper end of the guide plate 971 is obliquely connected to an inner wall of the discharge pipe 44 upward, so that the bottom end of the discharge pipe 44 forms a discharge opening with a gradually decreasing opening.

[0049] Specifically, when the guide plate 971 is arranged obliquely, the guide plate 971 can guide the inorganic solid slag in the discharge pipe 44 to be conveyed from top to bottom, thereby avoiding the accumulation of the inorganic solid slag at the second inlet due to the existence of the shielding plate.

[0050] In this embodiment, the partition plate 98 is rotationally connected to the top wall of the sediment tank 9 at the second inlet through a rotating shaft, and a torsional spring is arranged on the rotating shaft. The elastic force of the torsional spring enables the partition plate 98 to be pressed against the helical blades at the end of the second section 53 and provides the partition plate 98 with a driving force to rotate towards the second inlet. The bottom wall of the partition plate 98 is provided with a force receiving portion, which can abut against the end of the second section 53 when the second section 53 is lowered along the axial direction, so as to drive the partition plate 98 to rotate towards the direction away from the second inlet.

[0051] Specifically, when the partition plate 98 is arranged between the helical blades of the first section 52 and the second section 53, the existence of the helical blades can hinder the rotation of the partition plate 98 and prevent the partition plate 98 from rotating upwards to be horizontal. When it is necessary to separate the second inlet by using the partition plate 98, the second section 53 and the first section 52 are simultaneously moved upwards along the axial direction thereof, so that the blades at the lower end of the second section 53 no longer hinder the rotation of the partition plate 98.

[0052] Specifically, after the second section 53 is moved upwards by a distance, the second section 53 is disengaged from the abutment against the partition plate 98 and abuts against the force receiving portion on the outer side surface of the partition plate 98, so that the partition plate 98 is arranged horizontally and blocks the bottom end of the second inlet. Specifically, the force receiving portion here is a plate structure, i.e., the force receiving plate 981 shown in the figure. When the first section 52 and the second section 53 need to be lowered so as to disengage the partition plate 98 from the second inlet, the second section 53 first abuts against the force receiving plate 981. After the force receiving plate 981 is rotated to the lowermost position, the helical blades on the second section 53 pass through the corner position between the force receiving plate 981 and the partition plate 98 and continue to abut against the partition plate 98 until the first section 52 and the second section 53 are reset downwards.

[0053] In this embodiment, the first section 52 and the second section 53 each have the helical shaft and the helical blades described above, and the end faces of the first section 52 and the second section 53 adjacent to each other are respectively provided with an insertion block and an insertion slot. The insertion block and the insertion slot can be inserted to limit the mutual rotation of the first section 52 and the second section 53.

[0054] Specifically, the cross sections of the insertion block and the insertion slot here are non-circular, and the cross section shapes and sizes of the two are the same. As a specific structure, the insertion block here is a square block, and the insertion slot is a square slot.

[0055] In this embodiment, the sediment tank 9 has an obliquely arranged first bottom wall 94 and a second bottom wall 95. The included angle between the first bottom wall 94 and the horizontal plane is greater than the included angle between the second bottom wall 95 and the horizontal plane, and the helical slag discharge mechanism 5 is attached to and supported by the second bottom wall 95.

[0056] Specifically, the cross section of the settling tank 9 gradually decreases in the direction from top to bottom, so that the organic solid residues in the slurry gradually converge to the helical blade of the screw residue discharging mechanism 5 at the bottom of the settling tank 9. The settling tank 9 also has a plurality of side walls 93. The side walls 93 are used to connect the first bottom wall 94 and the second bottom wall 95.

[0057] In this embodiment, the part of the screw residue discharging mechanism outside the settling tank 9 is communicated with the solid residue outlet of the oil extraction device through a pipeline.

[0058] Specifically, the part of the screw residue discharging mechanism 5 in the settling tank 9 is not provided with the shell 1, and the part of the screw residue discharging mechanism 5 in the settling tank 9 shares the shell 1 of the settling tank 9 itself. The part of the screw residue discharging mechanism 5 outside the settling tank 9 is provided with a square shell 910, and the lower part of the upper end of the shell 910 is provided with the residue discharging port 91. Further, the settling tank 9 and the shell 910 are supported by a plurality of supports 911, respectively. Specifically, the rotating power is provided by the rotating motor 51, and the shell of the rotating motor 51 is fixed with the shell 910 of the screw residue discharging mechanism 5.

[0059] In this embodiment, the feeding pipe 41 is provided with a screw feeding mechanism, one end of the feeding pipe 41 is communicated with the feeding bin 3, the other end penetrates the slurry discharging chamber and is communicated with the inner cylinder 45, and the inner cavity of the feeding pipe 41 is not communicated with the slurry discharging chamber.

[0060] Specifically, the feeding bin 3 is arranged on one side of the slurry crushing device, the bottom of the feeding bin 3 is provided with a horizontal screw feeding mechanism capable of conveying materials, one end of the screw feeding mechanism penetrates the feeding bin 3, and the other end extends to the inner bin together with the feeding pipe 41.

[0061] In this embodiment, the bottom end of the inner cylinder 45 is rotatably installed on the bottom plate, the bottom plate is fixed to the bottom end of the inner cavity of the outer cylinder 42, and a plurality of slurry discharging holes communicating with the first inlet are arranged around the inner cylinder 45.

[0062] Specifically, the slurry discharging port 47 is arranged at the bottom of the entire slurry crushing mechanism, the plurality of slurry discharging holes are respectively communicated with the slurry discharging port 47, and the slurry discharging port 47 is aligned with and sealingly connected with the first inlet. Further, the slurry discharging holes can be round holes or square holes, and the plurality of slurry discharging holes are arranged uniformly around the inner cylinder 45.

[0063] The specific embodiments described above cannot be regarded as a limitation on the protection scope of the present application, and any alternative improvement or change made by those skilled in the art to the embodiments of the present application falls within the protection scope of the present application.

[0064] The details of the present application not described above are well known to those skilled in the art.

Claims

1. A kitchen waste treatment device, characterized by, The pulp crusher comprises a vertical crushing cylinder, which comprises an inner cylinder and an outer cylinder arranged in a nested manner, a pulp discharge cavity is formed between the outer cylinder and the inner cylinder, the bottom of the inner cylinder is communicated with a feeding pipe, and the top of the inner cylinder is communicated with a discharging pipe; a spiral crushing mechanism is arranged in the inner cylinder; the side wall of the inner cylinder is provided with filter holes, and a sedimentation tank is arranged below the crushing cylinder; the overflow port of the upper portion of the sedimentation tank is communicated with the inlet of a heating tank, the outlet of the heating tank is communicated with the inlet of an oil extraction device, and the oil extraction device is provided with a solid residue outlet; a spiral solid residue discharging mechanism is further arranged, one end of the spiral solid residue discharging mechanism is inserted into the sedimentation tank, and the other end of the spiral solid residue discharging mechanism extends out of the sedimentation tank in an upward and inclined direction; the top end of the sedimentation tank is provided with a first inlet and a second inlet, the first inlet is located above the lower end of the spiral solid residue discharging mechanism in the sedimentation tank, and the second inlet is located above the highest end of the spiral solid residue discharging mechanism in the sedimentation tank; the first inlet is communicated with the bottom end of the pulp discharge cavity, and the second inlet is communicated with the discharging pipe; the spiral solid residue discharging mechanism comprises a first segment and a second segment which are spliced in an axial direction, the first segment is lower than the second segment, and the lowest end of the second segment is located directly below the second inlet; the second segment is connected with a rotating power source, and the first segment can move in the axial direction of the first segment to be in contact with or separated from the second segment.

2. The kitchen waste treatment device according to claim 1, characterized in that, The second segment can move in the axial direction of the second segment and is fixed, a partition plate is rotatably arranged on one side of the second inlet, the partition plate is located between the first segment and the second segment, the partition plate is located above the spiral solid residue discharging mechanism, and the partition plate is at least partially inserted between the spiral blades of the first segment and the second segment; a shielding plate is arranged at the lower end of the second inlet, and the partition plate can be rotated to be horizontal and cooperated with the shielding plate to block the second inlet.

3. The kitchen waste processing device according to claim 2, characterized in that, One end of the shielding plate close to the center of the second inlet is connected with the lower end of a guide plate, and the upper end of the guide plate is connected to the inner wall of the discharging pipe in an upward and inclined manner, so that the bottom end of the discharging pipe forms a discharging port with a gradually decreasing opening.

4. The kitchen waste treatment device according to claim 2, characterized in that, The partition plate is rotatably connected with the top wall of the sedimentation tank at the second inlet through a rotating shaft, a torsional spring is arranged on the rotating shaft, and the elastic force of the torsional spring enables the partition plate to be pressed against the spiral blades at the end of the second segment and provides the partition plate with a rotating force towards the second inlet.

5. The kitchen waste processing device according to claim 4, characterized in that, A force receiving portion is arranged on the bottom wall of the partition plate, and the force receiving portion can abut against the end of the second segment when the second segment moves downward in the axial direction, so as to drive the partition plate to rotate away from the second inlet.

6. The kitchen waste processing device according to claim 1, characterized in that, The first segment and the second segment are respectively provided with a spiral shaft and a spiral blade, and the end faces of the first segment and the second segment which are adjacent to each other are respectively provided with an insertion block and an insertion slot, the insertion block and the insertion slot can be inserted to limit the mutual rotation of the first segment and the second segment.

7. The kitchen waste processing device according to claim 1, characterized in that, The sedimentation tank is provided with a first bottom wall and a second bottom wall which are arranged in an inclined manner, the included angle between the first bottom wall and a horizontal plane is greater than the included angle between the second bottom wall and the horizontal plane, and the spiral solid residue discharging mechanism is attached to and supported by the second bottom wall.

8. The kitchen waste processing device according to claim 1, characterized in that, The part of the spiral solid residue discharging mechanism outside the sedimentation tank is communicated with the solid residue outlet of the oil extraction device through a pipeline.

9. The kitchen waste processing device according to claim 1, characterized in that, A spiral feeding mechanism is arranged in the feeding pipe, one end of the feeding pipe is communicated with a feeding bin, the other end of the feeding pipe passes through the pulp discharge cavity and is communicated with the inner cylinder, and the inner cavity of the feeding pipe is not communicated with the pulp discharge cavity.

10. The kitchen waste processing device according to claim 1, characterized in that, The bottom end of the inner cylinder is rotatably installed on a bottom plate, the bottom plate is fixed to the bottom end of the inner cavity of the outer cylinder, and the bottom plate is provided with a plurality of pulp outlet holes in communication with the first inlet and arranged around the inner cylinder.

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