Crushing and squeezing device for kitchen waste processor

Abstract

The utility model relates to a crushing and squeezing device for a kitchen waste processor. The crushing and squeezing device comprises a fixed frame; the screw rod assembly comprises two screw rods which are arranged side by side and can rotate around respective axes, the screw rod assembly is sequentially divided into a crushing section and a squeezing section in the material flowing direction in the working chamber, and the part, corresponding to the crushing section, of each screw rod is provided with crushing blades which are spirally arranged in the axial direction of the corresponding screw rod; the number of the crushing blades on each screw is at least two, the crushing blades are arranged in the circumferential direction of the screw at intervals, a gap between the two crushing blades correspondingly forms a meshing groove which is spirally arranged in the axial direction of the screw, and the crushing blades on each screw are provided with blade roots connected with the screw and blade outer edges far away from the screw. Cutting grooves formed in the extension direction of the crushing blades are formed in the blade outer edges of the crushing blades. The crushing device has the advantages that hard materials such as bones and corn cobs can be well extruded and crushed, and the staggered cutting and extruding effect on large materials is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen garbage treater technical field especially relates to a kind of comminution and squeezing device for kitchen garbage treater. BACKGROUND

[0002] There are a large amount of waste liquid in kitchen garbage, which is inconvenient for transportation and treatment of garbage. Therefore, kitchen garbage is usually crushed and squeezed by a garbage disposer. In order to achieve sufficient crushing and dehydration of garbage material, the existing kitchen garbage disposer usually uses a comminution and squeezing device with double screw assemblies for processing. For example, a Chinese utility model patent application No. CN202320699140.7 (authorized publication No. CN219965957U) discloses a comminution and squeezing device for kitchen garbage disposer, which includes a screw assembly arranged in a working chamber. The screw assembly includes two screws arranged side by side and rotatable around their respective axes. The screw assembly is divided into a crushing section and a squeezing section along the direction of material flow in the working chamber. Each screw has at least two crushing blades arranged in a spiral shape along the axial direction of the corresponding screw at the part corresponding to the crushing section. Each crushing blade on each screw is arranged at intervals along the circumferential direction of the corresponding screw. The crushing blades on the two screws are engaged with each other and convey garbage material forward. Each screw has a squeezing blade arranged in a spiral shape along the axial direction of the corresponding screw at the part corresponding to the squeezing section. The comminution and squeezing device of the garbage disposer can crush large-volume garbage by engagement, and at the same time, the crushed garbage material can be transported forward along the axial direction, achieving sufficient crushing of garbage material.

[0003] However, the comminution and squeezing device in the above-mentioned patent application still has some deficiencies. First, in the crushing section of the comminution and squeezing device, the crushing blades of the two screws are formed by setting protrusions on the outer edges of the blades to achieve crushing of large-volume garbage material. However, due to the limited number of protrusions on the crushing blades, the crushing and cutting effect on large-volume material is limited, especially for hard materials such as bones and corn cobs, which cannot be crushed well, which is not conducive to the dehydration process in the later stage.

[0004] Therefore, the existing comminution and squeezing device for kitchen garbage disposer needs to be further improved. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problem of the prior art and provides a comminution and squeezing device for kitchen garbage disposer that can effectively improve the crushing effect on hard materials.

[0006] The utility model solves the above technical problem by adopting the following technical solution: a comminution and squeezing device for kitchen garbage disposer, which includes:

[0007] The fixed frame has a working chamber, a feeding port for feeding garbage materials into the working chamber, and a discharging port for discharging the processed garbage materials out of the working chamber.

[0008] The screw assembly is arranged in the working chamber and includes two screws arranged side by side and rotatable around respective axes. Both of the screws extend from the position of the feeding port to the position of the discharging port. The screw assembly is divided into a crushing section and a squeezing section along the direction of material flow in the working chamber. The part of each screw corresponding to the crushing section has crushing blades arranged in a spiral shape along the axial direction of the corresponding screw. The part of each screw corresponding to the squeezing section has squeezing blades arranged in a spiral shape along the axial direction of the corresponding screw.

[0009] The crushing blades on each screw are arranged at intervals along the circumferential direction of the screw. The gaps between the two crushing blades correspondingly form a spiral-shaped engagement groove along the axial direction of the screw. The crushing blade has a blade root connected to the screw and a blade outer edge away from the screw. The blade outer edge of the crushing blade has a cutting groove opened along the extending direction of the crushing blade.

[0010] In order to further improve the crushing effect on hard materials, the depth of the cutting groove on the crushing blade is denoted as h, where h≤10mm. The height of the crushing blade is denoted as H, where H≤30mm.

[0011] In order to directly crush and push the garbage materials entering from the feeding port towards the squeezing section, the feeding port is arranged on the top side of the end of the fixed frame, and the crushing section of the screw assembly is opposite to the feeding port.

[0012] In order to make the garbage materials processed in the crushing section enter the area of the squeezing section more smoothly, the fixed frame is further provided with a guide matching block arranged along the transverse direction of the fixed frame at a position corresponding to the end position of the crushing section of the screw assembly. The guide matching block has a guide slope gradually inclined towards the inside of the fixed frame from the position of the feeding port to the position of the discharging port. The guide slope is provided with cutting teeth capable of cutting the garbage materials entering the squeezing section.

[0013] In order to ensure the squeezing effect on the garbage materials, the pitch of the squeezing blades on each screw gradually decreases along the conveying direction of the materials in the working chamber.

[0014] In order to realize automatic discharging of the garbage material after being treated by the squeezing section, a discharging chamber adjacent to the working chamber is defined in the fixed frame, the working chamber is communicated with the discharging chamber through the discharging port, the end of the screw far from the feeding port penetrates into the discharging chamber through the discharging port, and a floating discharging assembly capable of reciprocating along the axial direction of the screw to open or close the discharging port is sleeved on the end of the screw far from the feeding port.

[0015] In order to conveniently arrange the floating discharging assembly and simplify the structure of the floating discharging assembly, the floating discharging assembly comprises:

[0016] a floating ring movably sleeved on the screw along the axial direction of the screw and capable of opening or closing the discharging port;

[0017] a fixed ring arranged on the end of the screw far from the feeding port;

[0018] a spring having one end abutting against the fixed ring and the other end abutting against the floating ring and always making the floating ring have a tendency to move towards the discharging port to close the discharging port.

[0019] In order to more accurately control the discharging speed of the discharging port, the end of the floating ring towards the discharging port is configured as a tapered head structure.

[0020] In order to effectively position the spring and avoid the problem of being stuck due to radial shaking of the spring, the end of the floating ring far from the discharging port is provided with a spring positioning groove for limiting the end of the spring.

[0021] In order to quickly separate the water squeezed and removed from the garbage material, the screw assembly is gradually inclined upwards from the feeding port to the discharging port.

[0022] Compared with the prior art, the advantages of the utility model are that: the cutting groove extending along the crushing blade is arranged on the outer edge of the crushing blade of the crushing and squeezing device, the cutting groove on the spiral blade of one of the two screws of the screw assembly can cooperate with the bottom wall or the side wall of the corresponding pressing groove on the other screw during mutual rotation and engagement of the two screws, the hard material such as bone and corn cob is better crushed and squeezed, and the effect of staggered cutting and squeezing of large material is ensured. On the other hand, after the garbage material is effectively crushed and squeezed, the pushing speed of the material to the squeezing section is also improved, the load is reduced, and the power consumption is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional structure schematic view of the kitchen garbage processor of the utility model embodiment;

[0024] Figure 2A vertical sectional view of the kitchen garbage disposer according to an embodiment of the present application;

[0025] Figure 3 A perspective view of the crushing and squeezing device according to an embodiment of the present application;

[0026] Figure 4 A perspective view of the crushing and squeezing device according to an embodiment of the present application, with the top plate body removed;

[0027] Figure 5 A perspective view of the screw assembly according to an embodiment of the present application;

[0028] Figure 6 A perspective view of the end of the screw assembly according to an embodiment of the present application; Figure 5 A sectional view along A-A of the screw assembly according to an embodiment of the present application;

[0029] Figure 7 A perspective view of the end of the screw assembly according to an embodiment of the present application;

[0030] Figure 8 A perspective view of the crushing section of the screw according to an embodiment of the present application;

[0031] Figure 9 A left side view of the screw according to an embodiment of the present application;

[0032] Figure 10 A perspective view of the fermentation device according to an embodiment of the present application;

[0033] Figure 11 A vertical sectional view of the fermentation device according to an embodiment of the present application;

[0034] Figure 12 A perspective view of the stirring device according to an embodiment of the present application;

[0035] Figure 13 A perspective view of the lifting wheel according to an embodiment of the present application;

[0036] Figure 14 A sectional perspective view of the lifting wheel according to an embodiment of the present application, taken along a direction perpendicular to its axis;

[0037] Figure 15 A perspective view of the kitchen garbage disposer according to an embodiment of the present application (with the cover plate in an open state);

[0038] Figure 16 A bottom view of the rotating spray head according to an embodiment of the present application. DETAILED DESCRIPTION

[0039] The present application will be further described in detail below with reference to the accompanying drawings.

[0040] Directional terms used in the description and claims of the present application, such as "front", "back", "up", "down", "left", "right", "side", "top", "bottom", and the like, are used for convenience and are not intended to be limiting as to the application of the present application. These terms, therefore, are to be interpreted to be perpendicular to the plane of the drawings when used in connection with the description of the various example structures and elements of the present application. Directional terms are used with respect to the orientation of the various example structures and elements of the present application as shown in the drawings, but these directional terms are used only for the purpose of illustration and are not meant to be limiting. For example, "up" and "down" are not necessarily limited to directions opposite or consistent with the direction of gravity.

[0041] Figures 1-16 A preferred embodiment of the kitchen waste disposer of the present application is shown. The kitchen waste disposer includes a housing 10, a feeding hopper 11, a water receiving tank 15, a crushing and squeezing device 2, and a fermentation device. The feeding hopper 11, the water receiving tank 15, the crushing and squeezing device 2, and the fermentation device are all arranged in the housing 10.

[0042] Referring to Figure 2 , the feeding hopper 11 has a conical structure with a large top and a small bottom. The top of the feeding hopper 11 has a feeding opening. The top of the housing 10 has a cover plate 12 opposite the feeding opening of the feeding hopper 11. The rear side of the cover plate 12 is rotatably connected to the housing 10 by left and right extending pin shafts and can be flipped upward to open the feeding opening and flipped downward to close the feeding opening.

[0043] Referring to Figure 1 , the top of the housing 10 is also provided with a touch control operation screen 14 capable of controlling the functions of the kitchen waste disposer. The touch control operation screen 14 is located on one side of the cover plate 12.

[0044] Continuing to refer to Figure 2 , the crushing and squeezing device 2 is located below the feeding hopper 11 and specifically includes a first driving motor 51, a fixed frame 21, a squeezing cylinder 26, a screw assembly, and a floating discharge assembly. The fixed frame 21 is in the shape of a long strip and is formed by a plurality of frame plates. The inside of the fixed frame 21 defines a working chamber and a discharge chamber 25 adjacent to the working chamber. The two ends of the working chamber in the length direction are respectively formed with a feeding opening 211 and a discharge opening 212. The feeding opening 211 is formed at the top of one end of the working chamber, and the discharge opening 212 is formed at the side of the working chamber and communicates with the discharge chamber 25. The fixed frame 21 gradually inclines upward from the feeding opening 211 to the discharge opening 212.

[0045] Referring to Figures 3-9The screw assembly is arranged in the working chamber and comprises two screws 22 arranged side by side and capable of rotating oppositely around their respective axes, both of which extend from the position of the feed port 211 to the position of the discharge port 212 of the fixed frame 21. The rotating directions of the two screws 22 are opposite and the two screws rotate oppositely. Specifically, one end of each screw 22 is rotatably connected to the plate of one end of the fixed frame 21 through an angular contact pair of bearings, and the end of one screw 22 extends out of the plate of the fixed frame 21 and is coaxially connected to a first transmission sprocket 61, which is in transmission connection with a first driving sprocket (not shown) on the output end of the first driving motor 51 through a transmission chain. The two screws 22 at the end are also engaged through gears 64 respectively connected to the two screws 22, so that when one of the screws 22 is driven to rotate by the first driving motor, the other screw 22 can also rotate synchronously. The other end of the two screws 22 extends into the discharge chamber 25 through the discharge port 212 and is rotatably connected to the plate of the other end of the fixed frame 21 through a ball roller bearing.

[0046] The inclination direction of the screw assembly of the embodiment is consistent with the inclination direction of the fixed frame 21, and gradually inclines upward from the feed port 211 to the discharge port 212. The two screws 22 of the screw assembly are arranged side by side in front and back, i.e., the height positions of the two screws 22 are basically consistent.

[0047] Continuing to refer to Figure 2 The extrusion cylinder 26 is arranged on the fixed frame 21 and located at the periphery of the screw assembly. The extrusion cylinder 26 comprises an upper cylinder body 261 and a lower cylinder body 262 which are connected together. The length of the upper end of the upper cylinder body 261 is slightly smaller than the length of the lower cylinder body 262, so as to be adapted to the feed port 211 formed at the top. The upper cylinder body 261 is a solid plate body without mesh holes, and the lower cylinder body 262 is located below the screw assembly and has water leakage holes distributed thereon. When the screw assembly operates, the garbage material is pressed and dewatered in cooperation with the extrusion cylinder 26, and the separated water is discharged through the water leakage holes of the lower cylinder body 262 and falls into the water receiving tank 15 below the crushing and dewatering device 2. The extrusion cylinder 26 adopts a cylinder structure of upper and lower cooperation, which can facilitate the installation of the screw assembly and other components.

[0048] Referring to Figure 5, the screw assembly is sequentially divided into a crushing section 221 and a dewatering section along the material flow direction in the working chamber. The part of each screw 22 corresponding to the crushing section 221 has crushing blades 2210 arranged in a spiral along the axial direction of the corresponding screw 22, and the part of each screw 22 corresponding to the dewatering section has extrusion blades arranged in a spiral along the axial direction of the corresponding screw 22. The spiral direction of the crushing blades 2210 and the spiral direction of the extrusion blades on each screw 22 are opposite to the rotation direction of the screw. Specifically, the dewatering section of the screw assembly of the embodiment includes a first dewatering section 222 and a second dewatering section 223 arranged in sequence along the material flow direction in the working chamber, and the extrusion blades on each screw 22 correspond to the first extrusion blades 2221 and the second extrusion blades 2231.

[0049] The crushing blades 2210 on each screw 22 are spaced apart along the circumferential direction of the screw 22, and the gap between the two crushing blades 2210 corresponds to the formation of an engagement groove 2211 arranged in a spiral along the axial direction of the screw 22. The crushing blades 2210 on each screw 22 have a blade root 2212 connected to the screw 22 and a blade outer edge 2213 away from the screw 22, and the blade outer edge 2213 of the crushing blade 2210 has a cutting groove 2214 opened along the extension direction of the crushing blade 2210. In order to further improve the crushing effect on hard materials, the height of the crushing blade 2210 is denoted as H, and the depth of the cutting groove 2214 on the crushing blade 2210 is denoted as h, wherein the height H of the crushing blade 2210 (which can also be understood as the depth of the engagement groove 2211) is generally less than 30 mm, and 17 mm is preferred. In order to ensure the cutting effect, the depth h of the cutting groove 2214 is in the range of h≤10 mm, and 4-8 mm is preferred. On the other hand, the width of the cutting groove 2214 (i.e. the size in the circumferential direction of the screw) should not be too small, and it is appropriate to be slightly smaller than the thickness of the tooth crest of the crushing blade 2210. The width of the cutting groove 2214 on the crushing blade 2210 should not be too small, and it is best to be slightly smaller than the width of the blade outer edge 2213 of the crushing blade 2210, so that the part of the blade outer edge 2213 of the crushing blade 2210 corresponding to the two sides of the cutting groove 2214 forms two cutting teeth 2215. In the process of mutual rotation and engagement of the two screws 22 of the screw assembly, the cutting groove 2214 (i.e. the cutting tooth 2215) on the spiral blade of one of the screws 22 can cooperate with the bottom wall or side wall of the corresponding compression groove on the other screw 22 to better extrude and crush hard materials such as bones and corn cobs, ensuring the staggered cutting and extrusion effect on large materials. After effectively extruding and crushing the garbage materials, the material pushing speed to the dewatering section is also improved, the load is reduced, and the electric energy consumption is reduced.

[0050] In this embodiment, the feed inlet 211 is opposite to the crushing section 221 of the screw assembly. When the screw assembly operates, the waste material fed into the feed hopper 11 can be directly crushed by the biting action of the crushing blades 2210 of the screw assembly and simultaneously pushed towards the squeezing section.

[0051] The fixing frame 21 also has a transverse (referring to the front-rear direction of the housing) lateral section (see the front-rear direction of the housing) at a position corresponding to the end of the crushing section 221 of the screw assembly. Figure 4 The guide block 23, extending in the direction indicated by arrow D, has a guide slope 230 that gradually slopes inward from the feed inlet 211 of the fixed frame 21 towards the discharge outlet 212. Cutting teeth 231 are sequentially arranged on the guide slope 230 along the transverse direction of the fixed frame 21. Each cutting tooth 231 on the guide block 23 can engage with the crushing blades 2210 on the screw 22 to further cut the waste material preparing to enter the squeezing section, improving the crushing effect. The guide slope 230 allows the waste material processed by the crushing section 221 to enter the squeezing section more smoothly, preventing waste material accumulation.

[0052] See Figure 5 and Figure 6 Along the rotation direction of the screw 22 (see...) Figure 6 (In the direction of the arrow in the diagram), the front side of the extrusion blades (including the first extrusion blade 2221 and the second extrusion blade 2231) is the working surface 2201. The pressure angle of the working surface 2201 of the extrusion blades is denoted as A, where the value of A is in the range of 8°≤A≤45°. The "working surface" of the extrusion blades can be understood as the side of the extrusion blades used to push the waste material during the rotation of the screw 22. The working surface can be a planar structure or a smooth curved surface structure. In this embodiment, the pressure angle of the working surface of the extrusion blades in the squeezing section is reasonably designed. Specifically, the pressure angle is set in the range of 8°≤A≤45°. In this way, when the two screws rotate and cooperate, the extrusion blades can push the waste material upward as much as possible, so that most of the material remains above the two screws, generating pressure to effectively squeeze and dehydrate the waste material, thereby effectively reducing the pressure between the lower part of the screw and the extrusion cylinder and improving the problem of material leakage from the bottom drain hole of the extrusion cylinder. In a preferred embodiment, the pressure angle of the working surface of the extrusion blade is 15°≤A≤25°. This not only effectively improves the material leakage problem at the bottom of the extrusion cylinder, but also ensures the forward pushing force and improves the material processing speed.

[0053] The rotation angle of the first extrusion blade 2221 of the first extruding section is denoted as a, and the rotation angle a increases in turn along the material flow direction, that is, the pitch of the first extrusion blade 2221 gradually decreases along the conveying direction of the material, and the rotation angle a is in the range of 30°≤a≤65°. The rotation angle of the second extrusion blade 2231 of the second extruding section is denoted as β, and the rotation angle β increases in turn along the material flow direction, that is, the pitch of the second extrusion blade 2231 gradually decreases along the conveying direction of the material, and the rotation angle β is in the range of 50°≤β≤85°. The first extrusion blade 2221 of the first extruding section 222 adopts a relatively small helix angle, and the axial thrust on the material is smaller and the radial thrust is larger. By using the opposite double screws with small rotation angles, the material can be effectively extruded and dewatered in the radial direction. At the end of the material pushing, the second extrusion blade 2231 of the second extruding section 223 adopts a relatively large helix angle, and the axial thrust on the material is larger and the radial thrust is smaller. Thus, by using the opposite double screws with large rotation angles, the material can be quickly pushed in the axial direction, so as to ensure the speed of the garbage material discharged from the discharge port 212, and make the garbage material meeting the requirements discharged as soon as possible.

[0054] The first extrusion blade 2221 and the second extrusion blade 2231 of the screw 22 have a mounting gap 220 therebetween, and the knife ring 24 is arranged in the working chamber at a position corresponding to the mounting gap 220. The inner peripheral wall of the knife ring 24 has protrusions 241 arranged in a circumferential direction and extending towards the mounting gap 220. During the process of the garbage material entering the second extruding section 223 from the first extruding section 222, the garbage material can be further cut by the knife ring 24, so as to ensure the crushing effect of the garbage material, especially the long-fiber garbage.

[0055] Referring to Figure 2 and Figure 7, the two screws 22 of the screw assembly are further sleeved with a floating discharge assembly capable of reciprocating along the axial direction of the screw 22 to open or close the discharge port 212 at the end away from the feeding port 211, and the floating discharge assembly is arranged in the discharge chamber 25. The floating discharge assembly comprises a floating ring 31, a fixed ring 32 and a spring 33. The fixed ring 32 is arranged at the end of the screw 22 away from the feeding port 211, and specifically, the end of the screw 22 away from the feeding port 211 is externally threaded, and the fixed ring 32 can be threadedly connected to the end of the screw 22 or limited by a nut threadedly connected to the end of the screw 22. The floating ring 31 is movably sleeved on the screw 22 along the axial direction of the screw 22 and can open or block the discharge port 212. The spring 33 is arranged between the floating ring 31 and the fixed ring 32, one end of the spring 33 abuts against the fixed ring 32, and the other end abuts against the floating ring 31, so that the floating ring 31 always has a tendency to move towards the discharge port 212 to block the discharge port 212. The floating ring 31 is a hollow cylindrical structure, and the end thereof towards the discharge port 212 is configured as a tapered head structure 311, and the other end thereof away from the discharge port 212 has a positioning groove 312 for limiting one end of the spring 33 therein, so as to effectively position the spring 33 and avoid the problem of jamming due to the radial shaking of the spring 33.

[0056] Referring to Figure 7 In the preferred embodiment, the outer peripheral wall of the end of the two screws 22 away from the feeding port 211 further has an outwardly protruding limiting protrusion 224, and the wall of the floating ring 31 is correspondingly provided with a strip-shaped limiting groove 310 arranged along the axial direction thereof, and the limiting protrusion 224 is slidingly limited in the strip-shaped limiting groove 310 of the floating ring 31. The two ends of the strip-shaped limiting groove 310 are closed, which can define the limit positions of the reciprocating movement of the floating ring 31 along the screw 22, and further make the tapered head structure 311 of the floating ring 31 have a certain gap between the outer contour surface thereof and the inner contour surface of the corresponding discharge port 212 when the floating ring 31 is in a natural state under the elastic force of the spring 33. The gap size between the tapered head structure 311 of the floating ring 31 and the inner contour surface of the corresponding discharge port 212 can be designed according to actual needs, and it is appropriate to be controlled within 2 mm, so that the extruded material with a size within 2 mm can pass out. When the pressure at the end of the working chamber is greater than the spring 33 pressure of the floating discharge assembly, the floating ring 31 moves away from the side of the discharge port 212, the discharge gap is increased, the material discharge speed is increased, and the pressure in the working chamber is decreased. When the pressure at the end of the working chamber is less than the spring 33 pressure of the floating discharge assembly, the floating ring 31 moves towards the side close to the discharge port 212, the discharge gap is reduced, the material discharge speed is reduced, and the pressure in the working chamber is increased, thereby achieving the purpose of automatic pressure control.

[0057] Referring to Figures 10-14The fermentation device is located at one side of the discharging chamber 25 of the crushing and squeezing device 2, and is used to receive the garbage material processed by the crushing and squeezing device 2 and to perform fermentation treatment. The fermentation device includes a fermentation box 4, a stirring device, a feeding cylinder 41, a feeding auger assembly 42, a lifting wheel 48, a discharging hopper 43, a discharging cylinder 44, and a discharging auger assembly 45. The stirring device, the lifting wheel 48, and the discharging hopper 43 are all arranged in the fermentation box 4.

[0058] The stirring device includes a stirring rod 46, outer stirring blades 471, and inner stirring blades 472. The stirring rod 46 extends horizontally and is rotatably arranged in the fermentation box 4. The outer stirring blades 471 and the inner stirring blades 472 are arranged in a spiral shape along the length direction of the stirring rod 46 at the periphery of the stirring rod 46 and are connected to the stirring rod 46. The spiral direction of the inner stirring blades 472 is opposite to the spiral direction of the outer stirring blades 471, and the inner stirring blades 472 are located closer to the stirring rod 46 than the outer stirring blades 471. Because the spiral direction of the inner stirring blades 472 is opposite to the spiral direction of the outer stirring blades 471, when the stirring device operates, the outer stirring blades 471 and the inner stirring blades 472 can respectively convey the garbage material in the inner and outer areas towards opposite directions, thereby realizing the circulation and turning of the garbage material in the fermentation box 4, avoiding the garbage material from gathering on one side of the fermentation box 4, and achieving sufficient stirring of the garbage material to ensure the fermentation effect.

[0059] The stirring rod 46 is provided with at least two support rod groups arranged at intervals along the length direction of the stirring rod 46, such as Figure 12 Three support rod groups are shown. Each support rod group includes at least two connecting rods 461 arranged in sequence along the circumferential direction of the stirring rod 46, each connecting rod 461 extends outward from the stirring rod 46, and the outer stirring blades 471 and the inner stirring blades 472 are connected to the corresponding connecting rods 461. As shown in Figure 11 Each support rod group in the above shows four connecting rods 461 arranged uniformly in the circumferential direction, and the outer stirring blades 471 and the inner stirring blades 472 also have four. For each connecting rod 461, the connecting positions of the outer stirring blades 471 and the inner stirring blades 472 to the connecting rod 461 are different, and the connecting position of the inner stirring blades 472 to the connecting rod 461 is closer to the stirring rod 46 than the connecting position of the outer stirring blades 471 to the connecting rod 461.

[0060] The fermentation tank 4 comprises two opposite vertical plates 401 and a side plate 402 connected between the two vertical plates 401 and in a concave circular arc shape. One of the vertical plates 401 is provided with a feeding cylinder 41 extending out of the fermentation tank 4, the outer end of the feeding cylinder 41 is closed, and the inner end is in communication with the inner cylinder of the fermentation tank 4. The top of the feeding cylinder 41 is open to form a feeding port 411, which is located at the bottom of the discharging chamber 25 of the crushing and squeezing device 2, and is used to receive the garbage materials falling from the bottom of the discharging chamber. The feeding cylinder 41 is provided with a feeding auger assembly 42, which comprises a feeding rotating shaft 421 and a feeding auger blade 422 spirally arranged on the periphery of the feeding rotating shaft 421 and connected with the feeding rotating shaft 421. The feeding rotating shaft 421 is driven to rotate by an external driving mechanism, and the feeding auger blade 422 is driven to rotate, and the garbage materials falling into the feeding cylinder 41 are pushed into the fermentation tank 4.

[0061] In the preferred embodiment, one end of the stirring rod 46 of the stirring device is rotatably connected to one of the vertical plates 401, and the other end is coaxially connected to the feeding rotating shaft 421 of the feeding auger blade 422. The stirring rod 46 and the feeding rotating shaft 421 can be the same rod body or two rod body components connected together. See Figure 2 and Figure 11 The end of the feeding rotating shaft 421 extends out of the side wall of the outer end of the feeding cylinder 41 and is coaxially connected to a second transmission sprocket 63, which can also be connected to the second driving motor (not shown) through the transmission chain and the second driving sprocket.

[0062] The lifting wheel 48 is rotatably arranged in the fermentation tank 4, and the lifting wheel 48 is provided with a plurality of storage hoppers 481 arranged in sequence along the circumference. The opening direction of the storage hopper 481 is towards the inner side of the lifting wheel 48 and is inclined forward relative to the rotation direction of the lifting wheel 48 (see the direction of the arrow S in Figure 14 The vertical plate 401 of the fermentation tank 4 away from the feeding cylinder 41 is provided with a discharging hopper 43 extending horizontally from the inner side of the vertical plate 401 towards the inside of the fermentation tank 4, and the discharging hopper 43 is arranged below the top region of the lifting wheel 48, i.e. in the upper region inside the lifting wheel 48. The top of the discharging hopper 43 is open. During the rotation of the lifting wheel 48, the bottom storage hopper 481 can carry garbage materials at the bottom of the fermentation tank 4 and rotate upwards with the lifting wheel 48. When the lifting wheel 48 rotates to the top, the opening of the storage hopper 481 is directed towards the inside of the storage hopper 481, and the garbage materials carried in the storage hopper 481 will fall into the discharging hopper 43. In order to facilitate the rotation of the lifting wheel 48, the lifting wheel 48 can be coaxially arranged with the stirring rod 46, and one side of the lifting wheel 48 is connected to the four connecting struts 461 at the end position of the stirring rod 46 of the stirring device, and the lifting wheel 48 is driven to rotate by the stirring rod 46. Specifically, the stirring rod 46 passes through the lifting wheel 48 and is rotatably connected to the vertical plate 401 of the fermentation tank 4.

[0063] The vertical plate 401 of the fermentation tank 4 is further provided with a horizontally extending discharge cylinder 44 extending from inside the fermentation tank 4 to outside the fermentation tank 4. Specifically, an inner port of the discharge cylinder 44 is in communication with the discharge hopper 43, and a bottom of an end of the discharge cylinder 44 away from the fermentation tank 4 is provided with a discharge port 441. The discharge hopper 43 and the discharge cylinder 44 are provided with a discharge auger assembly 45 for pushing the garbage in the discharge hopper 43 to outside the fermentation tank 4. The discharge auger assembly 45 includes a discharge rotating rod 451 and discharge auger blades 452, wherein the discharge auger blades 452 are connected to the discharge rotating rod 451 and arranged in a spiral shape along an axial direction of the discharge rotating rod 451 at an outer periphery of the discharge rotating rod 451. One end of the discharge rotating rod 451 can be connected in transmission with a third driving motor 53 outside the discharge cylinder 44 (through a chain wheel transmission assembly or a gear transmission assembly) after passing through an end plate of an outer end of the discharge cylinder 44. After the third driving motor 53 is started, the discharge auger assembly 45 is rotated, so that the garbage material falling into the discharge hopper 43 is pushed outward along the discharge cylinder 44, realizing quantitative discharge.

[0064] Referring to Figure 15 and Figure 16 The back surface of the cover plate 12 at the top of the shell 10 of the kitchen garbage disposer of the embodiment is further provided with a rotating spray head assembly 13, which includes a water outlet pipe 131 rotatably arranged at the back surface of the cover plate and at least two spray heads 132 arranged at intervals along a circumferential direction of the water outlet pipe 131 and extending outward from the water outlet pipe 131, as shown in Figure 14 The rotating spray head assembly 13 is provided with three spray heads 132. The water outlet direction of each spray head 132 is inclined relative to the vertical direction, so that the rotating spray head assembly 13 can rotate under the reaction of the water flow from the spray heads 132. When it is necessary to clean the feeding hopper 11, the cover plate is closed, the water supply switch is opened, and the rotating spray head assembly 13 can rotate under the reaction of the water flow from the spray heads 132 to clean the inner wall of the feeding hopper 11 comprehensively. Since the spray heads 132 of the rotating spray head assembly 13 automatically rotate under the action of the water flow, it is not necessary to additionally provide a driving mechanism to drive the spray heads 132 to rotate, thereby reducing the production cost and the use cost of the user.

Claims

1. A crushing and squeezing device for a kitchen waste disposer, comprising: a fixed frame (21) having a working chamber, an inlet (211) for feeding waste material into the working chamber, and an outlet (212) for discharging the processed waste material out of the working chamber; a screw assembly disposed in the working chamber and comprising two screws (22) arranged side by side and rotatable about their respective axes, each of the two screws (22) extending from a position corresponding to the inlet (211) to a position corresponding to the outlet (212), the screw assembly being divided into a crushing section (221) and a squeezing section along the direction of material flow in the working chamber, each of the screws (22) having a crushing blade (2210) arranged in a helical pattern along the axial direction of the corresponding screw (22) at a position corresponding to the crushing section (221), and each of the screws (22) having a squeezing blade arranged in a helical pattern along the axial direction of the corresponding screw (22) at a position corresponding to the squeezing section; characterized in that the crushing blade (2210) on each of the screws (22) is arranged in at least two parts spaced apart along the circumferential direction of the screw (22), the gap between the two parts of the crushing blade (2210) corresponding to a crushing groove (2211) arranged in a helical pattern along the axial direction of the screw (22), and the crushing blade (2210) having a blade root (2212) connected to the screw (22) and a blade outer edge (2213) away from the screw (22), the blade outer edge (2213) of the crushing blade (2210) having a cutting groove (2214) formed therein along the direction of extension of the crushing blade (2210). The depth of the cutting groove (2214) on the crushing blade (2210) is denoted as h, where h≤10 mm. The inlet (211) is formed on the top side of the end portion of the fixed frame (21), and the crushing section (221) of the screw assembly is opposite to the inlet (211). The fixed frame (21) further comprises a guide block (23) arranged in the lateral direction of the fixed frame (21) at a position corresponding to the end of the crushing section (221) of the screw assembly, the guide block (23) having a guide slope (230) gradually inclined towards the inside of the fixed frame (21) from the position corresponding to the inlet (211) to the position corresponding to the outlet (212), and the guide slope (230) having a cutting tooth (231) capable of cutting the crushing blade (2210) on the screw (22).

2. The pulverizing and wringing device for use in a kitchen garbage disposer according to claim 1, characterized in that: The pitch of the squeezing blade on each of the screws (22) gradually decreases along the direction of material flow in the working chamber.

3. The pulverizing and squeezing device for use in a kitchen garbage disposer according to claim 1, characterized in that: ​ 4. The pulverizing and squeezing device for use in a kitchen garbage disposer according to claim 1, characterized by: ​ 5. The pulverizing and squeezing device for use in a kitchen garbage disposer according to claim 1, characterized by: ​ 6. The pulverizing and squeezing device for a kitchen garbage disposer according to any one of claims 1 to 5, characterized in that: The fixed frame (21) further defines a discharge chamber (25) adjacent to the working chamber, the working chamber being communicated with the discharge chamber (25) through the discharge port (212), the end of the screw rod (22) away from the feeding port (211) extending into the discharge chamber (25) through the discharge port (212), and the end of the screw rod (22) away from the feeding port (211) further sleeving a floating discharge assembly capable of reciprocating along the axial direction of the screw rod (22) to open or close the discharge port (212).

7. The pulverizing and squeezing device for use in a kitchen garbage disposer according to claim 6, characterized in that: The floating discharge assembly comprises: a floating ring (31) movably sleeving the screw rod (22) along the axial direction of the screw rod (22) and capable of opening or blocking the discharge port (212); a fixed ring (32) arranged on the end of the screw rod (22) away from the feeding port (211); a spring (33) having one end abutting against the fixed ring (32) and the other end abutting against the floating ring (31) and always making the floating ring (31) have a tendency to move towards the discharge port (212) to block the discharge port (212).

8. The pulverizing and squeezing device for use in a kitchen garbage disposer according to claim 7, characterized in that: The end of the floating ring (31) towards the discharge port (212) is configured as a tapered head structure (311).

9. The pulverizing and squeezing device for use in a kitchen garbage disposer according to claim 7, characterized by: The end of the floating ring (31) away from the discharge port (212) has a spring (33) positioning groove (312) for positioning the end of the spring (33).

10. The pulverizing and squeezing device for a kitchen garbage disposer according to any one of claims 1 to 5, characterized in that: The screw rod assembly gradually inclines upward from the feeding port (211) to the discharge port (212).

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