Commercial kitchen food waste treatment system

Abstract

The present invention relates to a commercial kitchen food waste treatment system, comprising: a spiral extrusion dehydration device, comprising a shell with a accommodating cavity, a screw, a screen, a discharge device and a first driving mechanism, the screw is provided with a spiral blade along its length direction, the spiral blade on the screw comprises a shaftless blade extending backward spirally from the rear end of the screw along the axial direction of the screw, and the middle area of ​​the shaftless blade is constructed as a tapered hole structure with a small front and a large rear; the ejector cone of the discharge device has a conical surface structure adapted to the tapered hole structure of the shaftless blade, and when the ejector cone moves forward and is in place, the conical surface structure of the ejector cone fits with the inner circumference of the shaftless blade. When the ejector cone is moved backward, the shaftless blade can be separated, the matching clearance between the inner diameter of the shaftless blade and the ejector cone is increased, and the material will automatically fall off when the screw is rotated, and there is no cleaning dead angle between the shaftless blade and the ejector cone. The screw and the screen are rinsed with water to achieve the purpose of quickly cleaning the residual garbage.

Description

Technical Field

[0001] The present invention relates to the technical field of food waste treatment equipment, and in particular to a commercial kitchen food waste treatment system. Background Art

[0002] There are many types of garbage disposal equipment on the market, mainly involving the conveying system and crushing and dehydration system of food waste materials. Among them, garbage material transportation basically adopts the type of garbage bin lifting and turning device or screw conveying device. Among them, the use of garbage bin lifting and turning device has the following problems: after the garbage reaches the material box, it is directly crushed. Due to the unstable feeding process, it is very easy to cause uneven load or jamming of the crusher. Although the use of screw conveying device can achieve stable feeding, at the end of the later processing (material feeding stops), there is a lot of residual garbage in the screw, and the garbage will stink after overnight, affecting the working environment.

[0003] In order to solve the above technical problems, a better way to deliver food waste is to use a pipe chain conveyor to achieve stable delivery. Traditional pipe chain conveyors are mainly used for bulk materials (such as chemical raw materials, coal powder, grain, etc.), and the conveyed media are all in dry conditions. The main characteristics are that the materials are loose and non-sticky. In addition to food waste, there are also bones, beer bottle caps, napkins and other debris in the food waste. The material particles are irregular in size and shape, and have high moisture content. They are easy to accumulate at the feed port of the pipe chain conveyor, resulting in frequent jamming of the feed port of the pipe chain conveyor.

[0004] At present, the existing food waste crushing and dehydration system mainly adopts a screw extrusion dehydration device. The specific process is that the conveying screw pushes the material entering the material box to the pressure zone spiral, and the material is gradually concentrated by reducing the pitch and increasing the shaft diameter, and under the action of the screen wall and the cone body resistance, the liquid contained in the food waste material is squeezed out, and the squeezed liquid flows out of the screen, and is concentrated in the water storage tank and discharged from the water tank. The dehydrated dry material is discharged from the machine between the end outlet of the screen cylinder and the automatic cylinder resistance device body. For example, the Chinese utility model patent "A screw extruder for solid-liquid separation of food waste" with application number CN201821169661.7 (authorization publication number CN208646109U) has made similar disclosures.

[0005] However, in actual use, the current spiral dehydration device still has certain shortcomings. The operation process of the spiral dehydration device is that the material enters the material port after crushing, and the screw squeezes the water-containing garbage material in the wedge-shaped net to achieve solid-liquid separation of the garbage material. Since the material continuously enters the screw to achieve the extrusion effect, when the material supply stops, the material will stay in the screw extrusion area, resulting in material accumulation. In particular, the surface accumulation of the spiral blades and the screw is more serious, and there are dead corners for cleaning, which are difficult to clean. The accumulated garbage will stink overnight and affect the environment. Summary of the invention

[0006] The first technical problem to be solved by the present invention is to provide a commercial kitchen food waste treatment system which is easy to clean in view of the current status of the prior art.

[0007] The second technical problem to be solved by the present invention is to provide a commercial kitchen food waste treatment system that can effectively realize the stable transportation of food waste materials, avoid the accumulation of food waste materials at the feed inlet, and reduce the problem of material jamming based on the current status of the existing technology.

[0008] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a commercial kitchen food waste treatment system, comprising:

[0009] A screw extrusion dehydration device comprises a housing with a receiving cavity, a screw, a screen and a first driving mechanism, wherein the screw and the screen are arranged in the receiving cavity of the housing, the screw is provided with a spiral blade along its length direction, the screen is substantially cylindrical and is sleeved outside the screw, thereby forming a working cavity for extruding and dehydrating food waste materials between the screen and the screw, the rear port of the screen is a material discharge port, the power output end of the first driving mechanism is connected to the front end of the screw, thereby driving the screw to rotate around its own axis, and the bottom of the housing also has a drainage port connected to the working cavity;

[0010] The spiral blade on the screw comprises a first blade portion connected to the wall surface of the screw and a second blade portion connected to the first blade portion and spirally extending backward from the rear end of the screw along the axial direction of the screw, wherein the second blade portion is a shaftless blade, and the middle area of ​​the shaftless blade is configured as a tapered hole structure with a small front and a large rear;

[0011] Also included is a discharging device, the discharging device comprising:

[0012] The ejector cone can move forward and backward along the axial direction of the screw rod, thereby blocking or opening the blanking port of the screen. The ejector cone has a conical surface structure that matches the conical hole structure of the shaftless blade. When the ejector cone moves forward to a position, the conical surface structure of the ejector cone fits the inner circumference of the shaftless blade.

[0013] The elastic member acts on the ejecting cone, so that the ejecting cone always has a tendency to move toward the conical hole structure of the shaftless blade.

[0014] In order to enable the ejector cone to move smoothly during the forward and backward movement, thereby accurately matching with the cone hole structure of the shaftless blade, the unloading device also includes:

[0015] An auxiliary support shaft, the first end of which is connected to the rear end of the screw and can rotate coaxially with the screw, the ejector cone is a cone sleeve which is sleeved on the auxiliary support shaft and can rotate with the auxiliary support shaft, and the cone sleeve can also slide forward and backward along the axial direction of the auxiliary support shaft;

[0016] The shaft seat has a shaft hole for the auxiliary support shaft to pass through.

[0017] In order to enable the auxiliary support shaft to drive the cone sleeve to rotate smoothly, the inner wall of the cone sleeve and the outer wall of the auxiliary support shaft are transmission-matched via a keyway.

[0018] As an improvement, the screen includes a fixed screen part and a movable screen part which can approach or move away from the fixed screen part, the fixed screen part is correspondingly located outside the first blade part, and after the movable screen part moves into position toward the fixed screen part, the movable screen part is correspondingly located outside the second blade part, and the front port of the movable screen part is connected to the rear port of the fixed screen part, and the cone sleeve has a radially outward extending retaining edge, which abuts against the rear port of the movable screen part, and the rear port of the movable screen part constitutes the dropping port.

[0019] When the movable screen part moves backward, it can drive the cone sleeve (acting on the retaining edge of the cone sleeve) to move backward at the same time, and is in an unloading state, so that the material in the extrusion chamber is pressure-free. After the screw rotates, the material falls automatically, thereby achieving the purpose of completely removing the residual garbage in the screw and the screen.

[0020] In order to drive the movable screen to move forward and backward, a second driving mechanism is also included, and the power output end of the second driving mechanism is connected to the movable screen part, thereby driving the movable screen part to approach or move away from the fixed screen part.

[0021] As improvements, it also includes:

[0022] A guide rod support assembly, comprising a support plate and at least two guide rods, wherein the length direction of each guide rod is substantially consistent with the axial direction of the screw rod, one end of the guide rod is connected to the housing, and the other end is connected to the support plate;

[0023] A fixed plate, which is arranged on the guide rod and can slide along the axial direction of the guide rod, the shaft seat is arranged on the fixed plate, and the fixed plate is connected to the movable screen part through a connecting plate;

[0024] A floating plate is provided on the guide rod and is located between the fixed plate and the cone sleeve. The floating plate can slide along the axial direction of the guide rod. The elastic member is provided between the fixed plate and the floating plate.

[0025] The pressure wheel component is arranged on the floating plate, the axis of the pressure wheel component is consistent with the extension direction of the floating plate, the pressure wheel component can rotate freely around its own axis, and the outer wall abuts against the rear end of the cone sleeve.

[0026] The above-mentioned structural arrangement enables the movable screen part, the ejecting cone, the floating plate and the fixed plate to form an integral component. When the electric push rod drives the movable screen part to move, the ejecting cone, the floating plate and the fixed plate can move together. The structure of this unloading device is more compact and ensures that the movable screen part and the ejecting cone are separated from the fixed screen part and the second blade part on the screw together, which facilitates the subsequent cleaning process.

[0027] For cost considerations, the elastic member is a spring.

[0028] In order to improve the stability of the forward and backward movement of the movable screen part, the movable screen part includes two first end plates arranged at intervals and a first screen arranged between the two first end plates, and the two first end plates are slidably arranged on the guide rod.

[0029] In order to drive the movable screen part to move, the second driving mechanism is an electric push rod, and the output end of the electric push rod is connected to the first end plate of the movable screen part.

[0030] In order to facilitate users to collect the dehydrated food waste materials, a receiving hopper is also included which is correspondingly arranged below the drop opening of the screen.

[0031] In order to improve the extrusion dehydration effect, the spiral blade is a variable pitch blade structure whose pitch gradually decreases from the front end to the rear end of the screw.

[0032] The technical solution adopted by the present invention to solve the above second technical problem is: the commercial kitchen food waste treatment system also includes:

[0033] Box;

[0034] A feed box, disposed in the box body, for storing food waste materials and having a discharge port for discharging the food waste materials;

[0035] A tube chain conveying device is arranged in the box body, comprising a first driving device, a conveying pipe and a tube chain assembly arranged in the conveying pipe, wherein the conveying pipe has a feed inlet and a discharge outlet, and a power output end of the first driving device is connected to the tube chain assembly, thereby driving the tube chain assembly to circulate in the conveying pipe, so as to push the food waste material entering the conveying pipe from the feed inlet to the discharge outlet;

[0036] The quantitative feeding device is arranged between the discharge port of the feed box and the feed port of the conveying pipe, and is used to quantitatively transfer the food waste materials in the feed box to the conveying pipe.

[0037] A garbage disposer is arranged in the box body, and has a grinding chamber for crushing food waste materials and a material inlet and a material outlet connected to the grinding chamber. The material inlet is connected to the discharge port, and the material outlet is connected to the working chamber of the spiral extrusion dehydration device.

[0038] In order to quantitatively and stably transport the food waste material in the feed box to the feed pipe, the quantitative feeding device includes:

[0039] A feed box, disposed between the feed box and the feed pipe, and having a first opening for connecting to the discharge port of the feed box and a second opening for connecting to the feed port of the feed pipe;

[0040] A pushing impeller is disposed in the feed box and is capable of rotating around its own axis, thereby pushing the food waste material entering from the first opening to the second opening;

[0041] The second driving device has a power output end connected to the pushing impeller to drive the pushing impeller to rotate.

[0042] In order to push the food waste material to move forward stably in the conveying pipe, the pipe chain assembly includes a chain arranged along the length direction of the conveying pipe and a plurality of discs arranged in sequence and spaced apart along the chain and matched with the inner wall of the conveying pipe.

[0043] As an improvement, the second drive device and the first drive device are both connected to the control system so that the food waste material pushed out from the second opening by the pusher impeller falls between the two discs of the tube chain assembly. The above structural arrangement can effectively avoid the problem of material accumulation at the feed inlet of the feed pipe due to the asynchronous operation of the pusher impeller and the sprocket of the tube chain conveying device.

[0044] In order to drive the pipe chain assembly to circulate and rotate in the conveying pipe, it also includes a working box connected to the conveying pipe, and the bottom of the working box has a discharge port. The pipe chain assembly also includes a sprocket located in the working box and capable of rotating around its own axis. The sprocket is connected to the chain transmission of the pipe chain assembly, and the power output end of the first drive device is drivingly connected to the sprocket.

[0045] In order to achieve the purpose of synchronous action of the sprocket and the push impeller, a plurality of magnets arranged at intervals are provided on the end face of the sprocket along its circumference, and a sensor for identifying the magnet is provided on the inner wall of the working box corresponding to the sprocket, and the sensor is connected to the control system.

[0046] Compared with the prior art, the advantages of the present invention are as follows: the rear end of the screw of the spiral extrusion dehydration device has a second blade part that extends spirally backward along the axial direction of the screw, and the second blade part is a shaftless blade. The middle area of ​​the shaftless blade is constructed as a conical hole structure that is small in front and large in the back. Correspondingly, a material ejection cone is provided at the blanking port of the screen, and the material ejection cone can move forward and backward along the axial direction of the screw, thereby blocking or opening the blanking port of the screen. When the material ejection cone moves forward into position, the conical surface structure of the material ejection cone can fit with the inner circumference of the shaftless blade. Therefore, during the extrusion dehydration process, the cooperation between the material ejection cone and the shaftless blade can achieve a better extrusion dehydration effect. When the extrusion force of the material on the material ejection cone is greater than the pushing force of the elastic member, the material ejection cone starts to move backward to extrude the material, thereby achieving the purpose of extruding and dehydrating the food waste material. The moisture content of the material after extrusion is related to the size of the elastic member, and therefore, it can be set by adjusting the elastic force of the elastic member. On the other hand, when the ejecting cone is moved backward, the shaftless blades can be disengaged, the fitting clearance between the inner diameter of the shaftless blades and the ejecting cone is increased, the material will automatically fall off when the screw is rotated, and there is no cleaning dead angle between the shaftless blades and the ejecting cone. Therefore, in the unloading state, flushing the screw and the screen with water can achieve the purpose of quickly cleaning the residual garbage. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0048] Figure 2 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention (the relevant baffles of the box are omitted);

[0049] Figure 3 It is a three-dimensional structural schematic diagram of the connection state of the pipe chain conveying device and the garbage disposer according to an embodiment of the present invention;

[0050] Figure 4 for Figure 3 The schematic diagram of the three-dimensional structure after the feed box is omitted;

[0051] Figure 5 for Figure 4 The schematic diagram of the three-dimensional structure after omitting the quantitative feeding device;

[0052] Figure 6 for Figure 3 A vertical partial cross-sectional view of (omitting the garbage disposer);

[0053] Figure 7 for Figure 6 Vertical partial section view at AA in the middle;

[0054] Figure 8 It is a schematic diagram of the three-dimensional structure of a spiral extrusion dehydration device according to an embodiment of the present invention;

[0055] Fig. 9 for Figure 8 Schematic diagram of the three-dimensional structure after omitting the cover plate of the shell and the receiving hopper;

[0056] Fig.10 for Figure 8 A transverse cross-sectional view of (the receiving hopper is not shown);

[0057] Fig.11 It is a front view of the spiral extrusion dehydration device of an embodiment of the present invention (the movable screen part is located in the front position and is in a state of engagement with the fixed screen part);

[0058] Fig.12 for Fig.11 A transverse cross-sectional view of

[0059] Fig.13 It is a front view of the spiral extrusion dehydration device of an embodiment of the present invention (the movable screen part is located at the rear position and is separated from the fixed screen part);

[0060] Fig.14 for Fig.13 A transverse cross-sectional view of

[0061] Fig.15 It is a schematic diagram of the three-dimensional structure of the pipe chain assembly according to an embodiment of the present invention. DETAILED DESCRIPTION

[0062] The present invention is further described in detail below with reference to the accompanying drawings.

[0063] See also Figure 1-Figure 15 A commercial kitchen food waste treatment system includes a box 90, a feed box 10, a pipe chain conveyor, a waste disposer 40 and a screw extrusion dehydration device 50. The pipe chain conveyor, the waste disposer 40 and the screw extrusion dehydration device 50 are all arranged in the box 90, see Figure 1 and Figure 2 .

[0064] See also Figure 2The feed box 10 is used to store food waste materials. A workbench 13 is provided on the side of the box body 90. The table surface of the workbench 13 is concave relative to the outer peripheral edge to form a food buffer zone. The food buffer zone is connected to the feed box 10, so that the food waste materials in the food buffer zone can be easily transferred to the feed box 10. The bottom of the feed box 10 also has a discharge port 11 for discharging food waste materials, and the discharge port 11 is connected to the tube chain conveyor device.

[0065] See also Figure 6 and Figure 7 A filter screen 12 is provided in the feed box 10 for filtering food waste. The filter screen 12 of this embodiment is a grid screen. When food waste is poured into the feed box 10, it can be filtered through the grid of the filter screen 12 (such as large bones, beer bottle caps, and napkins).

[0066] See also Figure 3-Figure 7 The pipe chain conveying device includes a conveying pipe assembly, a pipe chain assembly 22 , a first driving device 25 and a quantitative feeding device 30 .

[0067] See also Figure 3 The feed pipe assembly includes a feed pipe 21 and a working box 26. The feed pipe assembly has a feed port 210 and a discharge port 211. The feed pipe 21 is generally annular and vertically arranged. The feed port 210 is arranged at the bottom of the feed pipe 21. The upper end of the feed pipe 21 is connected to the working box 26 through a flange, and the discharge port 211 is arranged at the bottom of the working box 26. The feed port 210 of the feed pipe 21 is connected to the discharge port 11 of the feed box 10. The discharge port 211 is used to connect to the material inlet 41 of the garbage disposer 40.

[0068] See also Figure 6 and Fig.15 The pipe chain assembly 22 is arranged in the feed pipe 21, and includes a chain 220 arranged along the length direction of the feed pipe 21, a plurality of discs 221 arranged in sequence along the chain 220, and a sprocket 23. Specifically, the outer periphery of the disc 221 has an annular groove 2210, and a sealing ring 222 for sealingly cooperating with the inner wall of the feed pipe 21 is arranged in the annular groove 2210.

[0069] See also Figure 6 The sprocket 23 is arranged in the working box 26 and can rotate around its own axis. The sprocket 23 is drivingly connected to the chain 220 of the tube chain assembly 22, and the power output end of the first driving device 25 is drivingly connected to the sprocket 23, thereby driving the tube chain assembly to circulate in the feeding pipe 21 (and the working box 26) to push the food waste entering the feeding pipe 21 from the feeding port 210 to the discharge port 211 of the working box 26.

[0070] See also Figure 7The first driving device 25 of this embodiment is a first motor disposed outside the working box 26, and the driving shaft of the first motor is connected to the above-mentioned sprocket 23 through a reducer.

[0071] See also Figure 6 and Figure 7 The quantitative feeding device 30 is disposed between the discharge port 11 of the feed box 10 and the feed port 210 of the feed pipe 21, and is used to transfer the food waste in the feed box 10 to the feed pipe 21. The feed port 210 of the feed pipe 21 is located at the bottom, and the feed box 10 and the quantitative feeding device 30 (relative to the working box) are also located at the bottom.

[0072] See also Figure 6 and Figure 7 The feeding device includes a feeding box 31, a pushing impeller 32 and a second driving device 33. The feeding box 31 is arranged between the feeding box 10 and the conveying pipe 21, and has a first opening 311 at the top and a second opening 312 at the bottom, wherein the first opening 311 is connected to the discharge port 11 of the feeding box 10, and the second opening 312 is connected to the feeding port 210 of the conveying pipe 21.

[0073] See also Figure 7 The pusher impeller 32 is disposed in the feed box 31 and can rotate around its own axis, thereby pushing the food waste material entering from the first opening 311 to the second opening 312. The second drive device 33 is disposed outside the feed box 31, and its power output end is drivingly connected to the pusher impeller 32, and drives the pusher impeller 32 to rotate around its own axis. Specifically, the second drive device 33 is a second motor, and the second motor is a servo motor.

[0074] See also Figure 7 In this embodiment, the second drive device 33 and the first drive device 25 are both connected to the control system (PLC control), so that the two can act synchronously. Specifically, a plurality of magnets 24 are arranged at intervals along the circumference of the sprocket 23 on the end surface, and a sensor 27 for identifying the magnet 24 is arranged on the inner wall of the working box corresponding to the sprocket 23, and the sensor 27 is connected to the control system. When the first driving device 25 drives the sprocket 23 to rotate, the sensor 27 can identify the multiple magnets 24 on the sprocket 23 in turn, thereby transmitting the signal to the control system. The control system can control the second driving device 33 (servo motor) and the first driving device 25 to rotate intermittently in turn, so that the food waste material can be pushed by the pushing impeller 32 and fall from the second opening 312 just between the two discs 221 of the tube chain assembly 22, so as to avoid the material falling on the circumferential surface of the disc 221 and causing the material to get stuck. By alternating actions, the food waste material can be prevented from accumulating at the feed port 210 of the feed pipe 21, reducing the problem of material jamming, and providing a (reasonable load) guarantee for the subsequent quantitative crushing of the food waste material.

[0075] See also Figure 4 and Figure 5 The food waste disposer 40 is used to grind and crush the food waste materials conveyed by the tube chain conveying device. The food waste disposer 40 has a grinding chamber for crushing the food waste materials and a material inlet 41 and a material outlet 42 connected to the grinding chamber, wherein the material inlet 41 is connected to the discharge port 211, and the material outlet 42 is connected to the working chamber of the screw extrusion dehydration device 50. The grinding structure and process of the food waste disposer 40 are both existing technologies and are not described here.

[0076] See also Figure 8 and Fig.14 The screw extrusion dehydration device 50 includes a housing 51, a screw 52, ​​a screen 60, a first driving mechanism 54 and a discharge device. The housing 51 has a receiving cavity, and the front and rear sides are supported by a first side plate 56 and a second side plate 57 respectively. The screw 52 and the screen 60 are arranged in the receiving cavity of the housing 51. The housing 51 of this embodiment also has a water collecting function, which is used to collect the water separated from the food waste material, and the bottom of the housing 51 has a drain port 510.

[0077] See also Fig.10 , a spiral blade 53 is provided on the screw 52 along its length direction, and the spiral blade 53 of this embodiment is a variable pitch blade structure whose pitch gradually decreases along the axial direction of the screw 52. The screen 60 is basically cylindrical and is sleeved outside the screw 52, ​​so as to form a working chamber for extruding and dehydrating food waste materials between the screen 60 and the screw 52. Among them, the rear port of the screen 60 is a drop port 600, and a feed pipe 511 connected to the working chamber is provided at the front of the screen 60. The spiral blade 53 on the screw 52 includes a first blade part 531 connected to the wall surface of the screw 52 and a second blade part 532 connected to the first blade part 531 and extending backward from the rear end of the screw 52 along the axial direction of the screw 52 in a spiral manner. The second blade part 532 of this embodiment is a shaftless blade, and the middle area of ​​the shaftless blade is constructed as a tapered hole structure 5320 with a small front and a large rear, that is, there is a gap between the inner circumference of the second blade part 532 and the surface of the auxiliary support shaft 71 described below.

[0078] See also Fig.10 The first driving mechanism 54 is disposed at the front side of the housing 51, and its power output end is connected to the front end of the screw rod 52, thereby driving the screw rod 52 to rotate around its own axis. The first driving mechanism 54 of this embodiment is a motor.

[0079] See also Figure 10-Figure 14 The unloading device includes a material ejecting cone 70, an elastic member 81, an auxiliary support shaft 71, a shaft seat 72, a second driving mechanism 82, a guide rod support assembly, a fixed plate 85, a floating plate 87 and a pressure wheel member.

[0080] See also Fig.11 and Fig.12 The guide rod support assembly includes a support plate 83 and at least two guide rods 84. The length direction of each guide rod 84 is substantially consistent with the axial direction of the screw rod 52, wherein one end of the guide rod 84 is connected to the housing 51 (specifically, it can be connected to the second side plate 57), and the other end is connected to the support plate 83. There are four guide rods 84 in this embodiment. The fixed plate 85 and the floating plate 87 are slidably arranged on the above four guide rods 84, and can slide forward and backward.

[0081] See also Fig.12 The first end of the auxiliary support shaft 71 is connected to the rear end of the screw rod 52 and can rotate coaxially with the screw rod 52. Specifically, the shaft seat 72 is arranged at the middle position of the fixing plate 85, and the middle part of the shaft seat 72 has a shaft hole, and the auxiliary support shaft 71 is passed through the shaft hole of the shaft seat 72.

[0082] See also Fig.12 The ejector cone 70 of this embodiment is a cone sleeve which is sleeved on the auxiliary support shaft 71 and can rotate with the auxiliary support shaft 71. The cone sleeve can also slide forward and backward along the axial direction of the auxiliary support shaft 71. The inner wall of the cone sleeve and the outer wall of the auxiliary support shaft 71 are matched with each other through a keyway. When the ejector cone 70 moves forward or backward, it can block or open the blanking opening 600 of the screen 60. Specifically, the ejector cone 70 has a conical surface structure 701 that is compatible with the conical hole structure 5320 of the shaftless blade. When the ejector cone 70 moves forward and into position, the conical surface structure 701 of the ejector cone 70 fits the inner circumference of the shaftless blade. The ejector cone 70 also has a retaining edge 702 extending radially outward, and the retaining edge 702 can rest against the blanking opening 600 of the screen 60.

[0083] Combination Fig.14 The floating plate 87 of this embodiment is located between the fixed plate 85 and the cone sleeve, and the floating plate 87 can slide along the axial direction of the guide rod 84. The pressure wheel member 88 is arranged on the floating plate 87 and can rotate freely around its own axis, wherein the axis of the pressure wheel member 88 is substantially consistent with the extending direction of the floating plate 87, so that the outer wall of the pressure wheel member 88 abuts against the rear end surface of the cone sleeve.

[0084] Combination Fig.12 and Fig.14 In this embodiment, the elastic member 81 is a spring, and there are four of them, which are arranged between the positioning plate and the floating plate 87 and distributed along the circumference of the auxiliary support shaft 71. The above spring acts on the floating plate 87, and acts on the ejector cone 70 through the pressure wheel member 88 arranged on the floating plate 87, so that the ejector cone 70 always has a tendency to move toward the cone hole structure 5320 of the shaftless blade.

[0085] See also Fig.12The screen 60 of this embodiment includes a fixed screen part 61 and a movable screen part 62 , and the movable screen part 62 can move closer to or farther away from the fixed screen part 61 .

[0086] The power output end of the second driving mechanism 82 is connected to the movable screen part 62, so as to drive the movable screen part 62 to approach or move away from the fixed screen part 61. Specifically, the second driving mechanism 82 in this embodiment is an electric push rod.

[0087] Combination Fig.10 and Fig.12 The fixed screen part 61 is correspondingly located outside the first blade part 531, and specifically includes two second end plates 612 arranged at intervals and a second screen 611 arranged between the two second end plates 612. The two second end plates 612 are fixed to the front and rear side walls of the housing 51, respectively.

[0088] See also Fig.14 The movable screen part 62 includes two first end plates 622 arranged at intervals and a first screen 621 connected between the two first end plates 622. A second connecting plate 89 is provided between the two first end plates 622, and the driving end of the above-mentioned electric push rod is connected to the second connecting plate 89. After the movable screen part 62 moves into position toward the fixed screen part 61, the movable screen part 62 is correspondingly located outside the second blade part 532, and the front port of the movable screen part 62 is connected to the rear port of the fixed screen part 61. The retaining edge 702 of the above-mentioned cone sleeve can abut against the rear port of the movable screen part 62, that is, the rear port of the movable screen part 62 constitutes the aforementioned blanking port 600.

[0089] A receiving hopper 55 is provided below the material outlet 600 of the screen 60 to receive the dehydrated food waste material pushed out from the material outlet 600 of the screen 60. In order to facilitate the user to collect the dehydrated material, the receiving hopper 55 and the material outlet 600 of the screen 60 are correspondingly moved out of the side wall of the box body 90.

[0090] The movable screen part 62 is also connected to the fixed plate 85 through the first connecting plate 86, so that the movable screen part 62, the ejector cone 70, the floating plate 87 and the fixed plate 85 form an integral assembly. When the electric push rod drives the movable screen part 62 to move, it can drive the ejector cone 70, the floating plate 87 and the fixed plate 85 to move together. Fig.12 and Fig.14 , respectively showing a structural schematic diagram in which the movable screen part 62 is located at the front position and is in an engaged state with the fixed screen part 61, and a structural schematic diagram in which the movable screen part 62 is located at the rear position and is in a disengaged state with the fixed screen part 61.

[0091] Advantages of the commercial kitchen food waste treatment system of this embodiment:

[0092] (1) A pipe chain conveying device is used to convey food waste materials. The conveying pipe 21 of the pipe chain conveying system is designed to be annular, and the pipe chain assembly 22 in the conveying pipe 21 can rotate cyclically and stably push the food waste materials entering the conveying pipe 21 from the feed port 210 to the discharge port 211. This pipe chain conveying system has a smooth feeding process and can effectively avoid the problem of machine jamming during the subsequent garbage crushing process. In addition, the inner cavity of the conveying pipe 21 is not easy to accumulate material, has little odor, and is easy to clean. On the other hand, the pipe chain assembly 22 of the pipe chain conveying system can be driven by a single sprocket 23, which has the advantages of simple transmission, compact structure, and easy installation and maintenance.

[0093] (2) When the tube chain conveyor is in operation, the quantitative feeding device 30 can be used to transfer the food waste materials in the feed box 10 to the conveying pipe 21 in a quantitative manner, thereby realizing intermittent stable feeding, avoiding the accumulation of food waste materials at the feed port 210 of the conveying pipe 21, reducing the problem of material jamming, and providing a guarantee (reasonable load) for the subsequent quantitative crushing of the food waste materials.

[0094] (3) The rear end of the screw 52 of the spiral extrusion dehydration device 50 has a second blade portion 532 extending spirally backward along the axial direction of the screw 52. The second blade portion 532 is a shaftless blade. The middle area of ​​the shaftless blade is constructed as a tapered hole structure 5320 that is small in the front and large in the back. Correspondingly, a material ejection cone 70 is provided at the position of the blanking port 600 of the screen 60. The material ejection cone 70 can move forward and backward along the axial direction of the screw 52, ​​thereby blocking and opening the blanking port 600 of the screen 60. When the material ejection cone 70 moves forward to the position, The conical surface structure 701 of the ejector cone 70 can fit with the inner circumference of the shaftless blade, so that in the process of extrusion and dehydration, the cooperation between the ejector cone 70 and the shaftless blade can achieve a better extrusion and dehydration effect, wherein, when the extrusion force of the material on the ejector cone 70 is greater than the ejection force of the elastic member 81, the ejector cone 70 starts to move backward to extrude the material, so as to achieve the purpose of extrusion and dehydration of the food waste material, wherein the moisture content of the material after extrusion is related to the size of the elastic member 81, so it can be set by adjusting the elastic force of the elastic member 81. On the other hand, when the ejector cone 70 is moved backward, it can be separated from the shaftless blade, and the matching clearance between the inner diameter of the shaftless blade and the ejector cone 70 is increased, and the material will automatically fall off when the screw 52 is rotated. There is no dead angle for cleaning between the shaftless blade and the ejector cone 70, so in the unloading state, the screw 52 and the screen 60 can be rinsed with water to achieve the purpose of quickly cleaning the residual garbage.

Claims

1. A commercial kitchen food waste treatment system, comprising: A screw extrusion dehydration device (50) comprises a housing (51) having a receiving cavity, a screw (52), a screen (60) and a first driving mechanism (54), wherein the screw (52) and the screen (60) are arranged in the receiving cavity of the housing (51), the screw (52) is provided with a spiral blade (53) along its length direction, the screen (60) is cylindrical and sleeved outside the screw (52), thereby forming a working cavity for extruding and dehydrating food waste materials between the screen (60) and the screw (52), the rear end of the screen (60) is a material discharge port (600), the power output end of the first driving mechanism is connected to the front end of the screw (52), thereby driving the screw (52) to rotate around its own axis, and the bottom of the housing (51) also has a drainage port (510) connected to the working cavity; The invention is characterized in that: the spiral blade (53) on the screw (52) comprises a first blade portion (531) connected to the wall surface of the screw (52) and a second blade portion (532) connected to the first blade portion (531) and extending backward in a spiral direction from the rear end of the screw (52) along the axial direction of the screw (52), the second blade portion (532) is a shaftless blade, and the middle area of ​​the shaftless blade is constructed as a tapered hole structure (5320) with a small front and a large rear; Also included is a discharging device, the discharging device comprising: The ejector cone (70) can move forward and backward along the axial direction of the screw (52) to block or open the drop opening of the screen (60). The ejector cone (70) has a conical surface structure (701) that matches the conical hole structure (5320) of the shaftless blade. When the ejector cone (70) moves forward to a position, the conical surface structure (701) of the ejector cone (70) fits the inner circumference of the shaftless blade. The elastic member (81) acts on the ejector cone (70), so that the ejector cone (70) always has a tendency to move toward the conical hole structure (5320) of the shaftless blade.

2. The commercial kitchen food waste treatment system according to claim 1, characterized in that The unloading device also includes: An auxiliary support shaft (71), a first end of which is connected to the rear end of the screw (52) and can rotate coaxially with the screw (52); the ejector cone (70) is a cone sleeve that is sleeved on the auxiliary support shaft (71) and can rotate with the auxiliary support shaft (71); the cone sleeve can also slide forward and backward along the axial direction of the auxiliary support shaft (71); The shaft seat (72) has a shaft hole for the auxiliary support shaft (71) to pass through.

3. The commercial kitchen food waste treatment system according to claim 2, characterized in that: The inner wall of the cone sleeve and the outer wall of the auxiliary support shaft (71) are transmission-matched via a keyway.

4. The commercial kitchen food waste treatment system according to claim 2, characterized in that: The screen (60) comprises a fixed screen part (61) and a movable screen part (62) which can move closer to or farther from the fixed screen part (61); the fixed screen part (61) is correspondingly located outside the first blade part (531); after the movable screen part (62) moves into position toward the fixed screen part (61), the movable screen part (62) is correspondingly located outside the second blade part (532), and a front port of the movable screen part (62) is connected to a rear port of the fixed screen part (61); the cone sleeve has a radially outwardly extending retaining edge (702), and the retaining edge (702) abuts against the rear port of the movable screen part (62); the rear port of the movable screen part (62) constitutes the drop port.

5. The commercial kitchen food waste treatment system according to claim 4, characterized in that: It also comprises a second driving mechanism (82), the power output end of which is connected to the movable screen part (62), thereby driving the movable screen part (62) to approach or move away from the fixed screen part (61).

6. The commercial kitchen food waste treatment system according to claim 5, characterized in that Also includes: A guide rod support assembly, comprising a support plate (83) and at least two guide rods (84), wherein the length direction of each guide rod (84) is consistent with the axial direction of the screw rod (52), and one end of each guide rod (84) is connected to the housing (51), and the other end is connected to the support plate (83); A fixed plate (85) is disposed on the guide rod (84) and is capable of sliding along the axial direction of the guide rod (84). The shaft seat (72) is disposed on the fixed plate (85). The fixed plate (85) is connected to the movable screen part (62) via a connecting plate. A floating plate (87) is provided on the guide rod (84) and is located between the fixed plate (85) and the cone sleeve. The floating plate (87) can slide along the axial direction of the guide rod (84). The elastic member (81) is provided between the fixed plate (85) and the floating plate (87); The pressure wheel component (88) is arranged on the floating plate (87). The axis of the pressure wheel component (88) is consistent with the extension direction of the floating plate (87). The pressure wheel component can rotate freely around its own axis, and the outer wall abuts against the rear end of the cone sleeve.

7. The commercial kitchen food waste treatment system according to claim 6, characterized in that: The movable screen part (62) comprises two first end plates (622) arranged at intervals and a first screen (621) arranged between the two first end plates (622), and the two first end plates (622) are slidably arranged on the guide rod (84).

8. The commercial kitchen food waste treatment system according to claim 7, characterized in that: The second driving mechanism (82) is an electric push rod, and the output end of the electric push rod is connected to the first end plate (622) of the movable screen part (62).

9. The commercial kitchen food waste treatment system according to claim 1, characterized in that: The spiral blade (53) is a variable pitch blade structure whose pitch gradually decreases from the front end to the rear end of the screw rod (52).

10. The commercial kitchen food waste treatment system according to any one of claims 1 to 9, characterized in that Also includes: Box body (90); A feed box (10), arranged in the box body (90), used for storing food waste materials, and having a discharge port (11) for discharging the food waste materials; A tube chain conveying device is arranged in the box body (90), comprising a first driving device (25), a conveying pipe (21), and a tube chain assembly (22) arranged in the conveying pipe (21), wherein the conveying pipe (21) has a feed inlet (210) and a discharge outlet (211), and a power output end of the first driving device (25) is connected to the tube chain assembly, thereby driving the tube chain assembly to circulate and rotate in the conveying pipe (21), so as to push the food waste material entering the conveying pipe (21) from the feed inlet (210) to the discharge outlet (211); A quantitative feeding device (30) is provided between the discharge port (11) of the feed box (10) and the feed port (210) of the feed pipe (21), and is used to quantitatively transfer the food waste material in the feed box (10) to the feed pipe (21); A garbage disposer (40) is disposed in the housing (90) and comprises a grinding chamber for crushing food waste materials, and a material inlet (41) and a material outlet (42) connected to the grinding chamber, wherein the material inlet (41) is connected to the discharge port (211), and the material outlet (42) is connected to the working chamber of the screw extrusion dehydration device (50).

11. The commercial kitchen food waste treatment system according to claim 10, characterized in that: The quantitative feeding device (30) comprises: A feed box (31) is disposed between the feed box (10) and the feed pipe (21), and has a first opening (311) for connecting to the discharge port (11) of the feed box (10), and a second opening (312) for connecting to the feed port (210) of the feed pipe (21); A push impeller (32) is disposed in the feed box (31) and is capable of rotating around its own axis, thereby pushing the food waste material entering from the first opening (311) to the second opening (312); The second driving device (33) has a power output end connected to the pushing impeller (32) to drive the pushing impeller (32) to rotate.

12. The commercial kitchen food waste treatment system according to claim 11, characterized in that: The pipe chain assembly (22) comprises a chain (220) arranged along the length direction of the material conveying pipe (21) and a plurality of discs (221) arranged in sequence and spaced apart along the chain (220) and matching with the inner wall of the material conveying pipe.

13. The commercial kitchen food waste treatment system according to claim 12, characterized in that: The second driving device (33) and the first driving device (25) are both connected to a control system so that the food waste material pushed out from the second opening (312) by the pushing impeller (32) falls between the two discs (221) of the tube chain assembly (22).

14. The commercial kitchen food waste treatment system according to claim 13, characterized in that: It also includes a working box (26) connected to the material conveying pipe (21), the bottom of the working box (26) has a discharge port (211), the pipe chain assembly (22) also includes a sprocket (23) located in the working box (26) and capable of rotating around its own axis, the sprocket (23) is drivingly connected to the chain (220) of the pipe chain assembly (22), and the power output end of the first driving device (25) is drivingly connected to the sprocket (23).

15. The commercial kitchen food waste treatment system according to claim 14, characterized in that: A plurality of magnets (24) are arranged at intervals on the end surface of the sprocket (23) along its circumference, and a sensor (27) for identifying the magnets (24) is provided on the inner wall of the working box corresponding to the sprocket (23), and the sensor (27) is connected to a control system.

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