Kitchen waste mechanical pretreatment system and pretreatment process thereof

Abstract

The kitchen waste mechanical pretreatment system comprises a discharging box, the lower end of the discharging box is connected with a pretreatment box, the center positions of the front end and the rear end of the pretreatment box are both fixedly connected with extrusion equipment, the upper end of a frame plate is fixedly connected with an air cylinder, the left side of the air cylinder is connected with a telescopic rod, and the left side of the telescopic rod is connected with a baffle. The front side and the rear side of the baffle are slidably connected with the pretreatment box, the lower end of the pretreatment box is provided with the liquid outlet collecting box, the left side of the pretreatment box is connected with the impurity collecting box, and kitchen waste entering the discharging box is extruded through extrusion of the extrusion plate in the pretreatment box, so that large kitchen waste is pressed and extruded flat; according to the kitchen waste treatment device, the liquid in the kitchen waste in the pretreatment box is squeezed out, then the liquid can be discharged from the liquid outlet bevel edge to enter the discharged liquid collecting box through lifting of the jacking plate, the squeezed kitchen waste forms a conventional rectangular waste impurity, and the conventional rectangular waste impurity is pushed out through the pushing-out device; and the rectangular garbage impurities are pushed out of the impurity collecting box.

Description

Technical Field

[0001] The invention relates to the technical field of food waste pretreatment, and in particular to a food waste mechanical pretreatment system and a pretreatment process thereof. Background Art

[0002] As people's living standards improve, the amount of food waste generated is increasing. Untreated food waste is easy to rot and deteriorate, emits foul odors, and breeds mosquitoes, flies, bacteria, etc., which not only causes serious pollution to the environment, but also may cause various public health problems. Traditional food waste treatment methods are often inefficient and incomplete, and it is difficult to meet current environmental protection requirements. Therefore, it is urgent to develop an efficient and reliable food waste pretreatment system and process. The existing pretreatment systems all crush the food waste and then separate the solid and liquid. The solid-liquid separation mainly relies on filtering. The filter mesh is easily clogged, inconvenient to clean, and inefficient.

[0003] Patent No. CN201711482149.8 discloses a food waste pretreatment device, which includes a discharge chamber, a separation chamber, a spiral feeder and a grinding member; a discharge port is provided on the discharge chamber, and a turnover pool is provided at the bottom of the discharge chamber; the separation chamber is arranged in the discharge chamber and above the turnover pool, a gap is provided between the side wall of the separation chamber and the discharge chamber, and filtering holes distributed along the circumference of the separation chamber are provided on the side wall of the separation chamber, a separation chamber outlet is provided on the separation chamber, and the separation chamber outlet is connected to the discharge port; the spiral feeder is arranged in the separation chamber, the grinding member is arranged at the bottom of the separation chamber, and the grinding member is arranged around the central axis of the separation chamber. The kitchen waste pretreatment equipment can effectively separate and treat different types of kitchen waste at a low cost. However, the equipment system has the following problems: first, filtering holes are used for filtering, and impurities after the kitchen waste is crushed are easy to clog the filter holes, which is inconvenient to clean. Secondly, the solid-liquid separation is not thorough, resulting in incomplete pretreatment, thereby reducing the efficiency of subsequent recycling of the kitchen waste. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies of the prior art. The kitchen waste entering the feed box is squeezed by the squeezing plate in the pretreatment box, so that large kitchen waste is pressed and flattened, thereby squeezing out the liquid in the kitchen waste in the pretreatment box. Then, the lifting of the lifting plate can make the liquid discharge from the liquid outlet bevel into the liquid outlet collection box. The squeezed kitchen waste forms a conventional rectangular garbage impurity, which is then pushed out by the pushing device, so that the rectangular garbage impurity is pushed out from the impurity collection box, thereby solving the technical problems of the prior art of using a filter net for solid-liquid separation, the filter net is easy to be blocked, the cleaning is inconvenient, and the solid-liquid separation is not thorough.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A mechanical pretreatment system for kitchen waste comprises a feed box, the lower end of which is connected to a pretreatment box, extrusion equipment is fixedly connected to the center positions of the front and rear ends of the pretreatment box, and a frame plate is fixedly connected to the upper end of the center position of the right side of the pretreatment box, the upper end of the frame plate is fixedly connected to a cylinder, and a pushing device is provided at the lower end of the frame plate, a telescopic rod is connected to the left side of the cylinder, a baffle is connected to the pretreatment box on the left side, and the baffle is slidably connected to the pretreatment box on the front and rear sides, a liquid outlet collection box is provided at the lower end of the pretreatment box, and an impurity collection box is connected to the left side of the pretreatment box.

[0007] As a preferred embodiment, the front and rear ends of the pretreatment box are slidingly and sealingly connected to the same extrusion plate, and a blocking baffle is provided on the left side of the pretreatment box, and the right side of the pretreatment box is movably and sealingly connected to the baffle, and the pretreatment box is a rectangular frame, and the front and rear ends of the frame are fixedly connected to the rectangular frame, the blocking baffle is movably connected to the impurity collection box, and the center position of the upper end of the blocking baffle is fixedly connected to the lifting handle, the lower end of the left side of the lifting handle is connected to the lifting telescopic rod, the lower end of the lifting telescopic rod is connected to the No. 2 cylinder, and the lower end of the No. 2 cylinder is fixedly connected to the impurity collection box.

[0008] As a preferred embodiment, the extrusion equipment at the rear end includes a motor box, a motor is arranged inside the motor box, an output shaft is arranged on the left side of the motor, a gear is fixedly connected to the left side of the output shaft, the upper end of the gear is meshed and connected to a rack, the upper end of the rack is provided with a V-shaped groove, and the front end of the rack is connected to a fixed extrusion rod, the front end of the fixed extrusion rod is fixedly connected to the extrusion plate, the upper end of the V-shaped groove is movably connected to a limiting conical ball, the right side of the limiting conical ball is movably connected to a receiving block, and the lower end of the receiving block is fixedly connected to the motor box.

[0009] As a preference, the ejection device has the same structure as the extrusion device, and the ejection device is provided with the same fixed extrusion rod, and the right side of the fixed extrusion rod in the ejection device is fixedly connected to the ejection plate, and the lower end of the ejection plate is provided with a limiting bevel.

[0010] As a preferred embodiment, a lifting plate is provided at the upper end of the interior of the liquid outlet collection box, and liquid outlet bevels are provided on the front and rear sides of the lifting plate, and liquid outlet grooves are evenly provided on the surface of the liquid outlet bevels, and a lifting telescopic rod is fixedly connected to the center position of the lower end of the lifting plate, and a lifting cylinder is provided at the lower end of the lifting telescopic rod, and the upper end shell of the liquid outlet collection box is a trapezoidal structure, the size of the upper end of the liquid outlet collection box is the same as the size of the lifting plate, and the area of ​​the upper end shell of the liquid outlet collection box is distributed in a manner of small on the top and large on the bottom, the middle shell of the liquid outlet collection box is a trapezoidal structure with large on the top and small on the bottom, and the lower end shell of the liquid outlet collection box is rectangular, the lifting cylinder is arranged on the outer side of the lower end of the liquid outlet collection box, and an external hose is opened on the right side of the lower end shell of the liquid outlet collection box.

[0011] As a preference, the lower end of the extrusion plate is provided with an extrusion bevel, the lower end of the extrusion bevel is provided with a liquid outlet bevel, and the inclination angle of the extrusion bevel and the inclination angle of the liquid outlet bevel are complementary to each other to form a right angle.

[0012] A pretreatment process of a mechanical pretreatment system for food waste comprises step S1: a feed box collects food waste;

[0013] Step S2: squeezing, squeezing plates arranged at the front and rear sides squeeze the food waste;

[0014] Step S3: collecting waste liquid. During the extrusion process, the lifting plate is at the uppermost position, and the extruded waste liquid flows along the liquid outlet bevel into the liquid outlet collection box;

[0015] Step S4: repeat steps S1-S3 until the volume in the pretreatment box 2 reaches the standard;

[0016] Step S5: Pushing out the waste, first the cylinder starts to work, so that the baffle separates the unloading box and the pretreatment box, and then the extrusion equipment performs the last extrusion;

[0017] Step S6: The No. 2 cylinder starts to work, pushing the blocking baffle upward, and then the pushing device starts to work, pushing the impurities in the pretreatment box into the impurity collection box for impurity recovery;

[0018] Step S7: Cleaning: adding clean water into the material box, and the lifting cylinder drives the lifting plate to descend, so that the connecting area between the pretreatment box and the lower end of the liquid collection box becomes larger, and the clean water takes away the fine impurities and enters the liquid collection box;

[0019] Step S8: Liquid recovery: an external hose is arranged on the upper side of the lower end of the liquid collection box, and the waste liquid is recovered by using the external hose to complete the pretreatment.

[0020] As a preferred embodiment, in step S2, the extrusion plate is extruded in a pretreatment box, and a protective cover is wrapped outside the pretreatment box, the upper end of the protective cover is sealed, and the lower end is connected to the liquid outlet collection box.

[0021] As another preferred embodiment, in step S7, when the lifting cylinder controls the lifting plate to rise to the highest position of the liquid collection box, the lifting plate and the liquid collection box can achieve sealed contact, and the liquid outlet bevel and the extrusion bevel complement each other at right angles, and the position of the extrusion bevel is limited.

[0022] Beneficial effects of the present invention:

[0023] (1) In the present invention, a discharge box is provided, and a discharge port at the upper end of the discharge box is provided in a downwardly inclined manner, so that the food waste can be discharged conveniently, and then enters the pretreatment box, and is squeezed by a squeezing plate in the pretreatment box, so that the liquid in the food waste is squeezed out, and then as the food waste is continuously added, the volume is continuously compressed, and the liquid is continuously squeezed out, and the food waste is squeezed into a rectangular shape by the squeezing plate, and then the lifting plate is lowered, and the liquid first enters the liquid outlet collection box along the liquid outlet inclined edge, and then the lifting plate is raised and continued to squeeze, and the squeezed water is repeatedly raised and lowered by the lifting plate and squeezed by the squeezing plate, so as to ensure that the solid-liquid separation is thorough and the solid impurities can be reduced from entering the liquid, which is simple and efficient.

[0024] (2) In the present invention, by providing a V-shaped groove and providing a limiting conical ball at the upper end of the V-shaped groove, the extrusion plate can be more stable during the extrusion process and the extrusion effect can be better.

[0025] (3) In the present invention, an impurity collection box is provided, and the extruded kitchen waste is pushed out in cooperation with the pushing device, so that the solid impurities can be completely collected, which is convenient for the subsequent recovery and treatment of the solid impurities, and the pretreatment efficiency is further improved.

[0026] In summary, the system has the advantages of simple and efficient solid-liquid separation, no filter clogging, and thorough solid-liquid separation, and is particularly suitable for the field of food waste pretreatment technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 It is a schematic diagram of the structure of the blocking baffle in the present invention.

[0030] Figure 3 It is a structural schematic diagram of the jacking cylinder in the present invention.

[0031] Figure 4 It is a structural schematic diagram of the telescopic rod in the present invention. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0033] Embodiment 1

[0034] like Figures 1 to 4 As shown, the present invention provides a mechanical pretreatment system for kitchen waste, including a feed box 1, the lower end of the feed box 1 is connected to a pretreatment box 2, the front and rear end center positions of the pretreatment box 2 are fixedly connected with extrusion equipment 3, and the upper end of the right center position of the pretreatment box 2 is fixedly connected to a frame plate 4, the upper end of the frame plate 4 is fixedly connected to a cylinder 5, and the lower end of the frame plate 4 is provided with a pushing device 8, the left side of the cylinder 5 is connected to a telescopic rod 51, the left side of the telescopic rod 51 is connected to a baffle 52, the front and rear sides of the baffle 52 are slidably connected to the pretreatment box 2, the lower end of the pretreatment box 2 is provided with a liquid outlet collection box 6, and the left side of the pretreatment box 2 is connected to an impurity collection box 7.

[0035] Further, the front and rear ends of the pretreatment box 2 are slidingly and sealedly connected to the same extrusion plate 21, and a blocking baffle 22 is provided on the left side of the pretreatment box 2, and the right side of the pretreatment box 2 is movably and sealedly connected to the baffle 52, and the pretreatment box 2 is a rectangular frame, and the front and rear ends of the frame plate 4 are fixedly connected to the rectangular frame, and the blocking baffle 22 is movably connected to the impurity collection box 7, and the center position of the upper end of the blocking baffle 22 is fixedly connected to the lifting handle 24, and the lower end of the left side of the lifting handle 24 is connected to the lifting telescopic rod, and the lower end of the lifting telescopic rod is connected to the No. 2 cylinder 23, and the lower end of the No. 2 cylinder 23 is fixedly connected to the impurity collection box 7. An extrusion plate 21 is provided in the pretreatment box 2, and the extrusion plate can squeeze the food waste entering the pretreatment box 2, so as to separate the solid and liquid, and the baffle 52 is connected to the pushing device 8, which can not only realize the sealing of the pretreatment box 2 into a rectangular box, but also can use the pushing device 8 to push out the solid impurities;

[0036] The function of the blocking baffle 22 is to cooperate with the extrusion plate 21 and the baffle 52 to form a closed rectangular space in the pretreatment box 2. When the solid waste needs to be discharged, it is only necessary to open the blocking baffle 22. It is simple and efficient, and the No. 2 cylinder 23 is used to drive the lifting handle 24 to rise upward, so that the blocking baffle 22 is raised, and the entire impurity collection box 7 can facilitate the collection of solid impurities. Then, a limit plate is set at the lower end of the blocking baffle 22, so that the blocking baffle 22 cannot be completely separated from the entire impurity collection box 7, and the integrity of the entire structure is higher.

[0037] Further, the extrusion device 3 at the rear end includes a motor box 31, a motor is arranged inside the motor box 31, an output shaft is arranged on the left side of the motor, a gear 32 is fixedly connected to the left side of the output shaft, the upper end of the gear 32 is meshedly connected to a rack 33, a V-shaped groove 34 is arranged on the upper end of the rack 33, and the front end of the rack 33 is connected to a fixed extrusion rod 35, the front end of the fixed extrusion rod 35 is fixedly connected to the extrusion plate 21, the upper end of the V-shaped groove 34 is movably connected to a limiting conical ball 36, the right side of the limiting conical ball 36 is movably connected to a receiving block 37, the lower end of the receiving block 37 is fixedly connected to the motor box 31, the motor in the motor box 31 starts to work, the motor drives the output shaft to rotate, the output shaft drives the gear 32 to rotate, the gear 32 drives the rack 33 meshed with it to move forward and backward, thereby driving the fixed extrusion rod 35 to move forward and backward, and then driving the extrusion plate 21 to perform forward and backward extrusion movement, thereby realizing the extrusion function of the extrusion plate 21;

[0038] The V-shaped groove 34 disposed on the upper end of the rack 33 cooperates with the limiting conical ball 36 to make the rack 33 more stable during the forward and backward movement, thereby making the extrusion function of the extrusion plate 21 more stable and efficient.

[0039] Furthermore, the pushing device 8 has the same structure as the extrusion device 3, and the same fixed extrusion rod 35 is provided in the pushing device 8, and the fixed extrusion rod 35 in the pushing device 8 is fixedly connected to the pushing plate 81 on the right side, and a limiting bevel 82 is provided at the lower end of the pushing plate 81. A motor box 31 is also provided in the pushing device 8, and a motor is provided in the motor box 31. When the motor works, the output shaft can rotate so that the fixed extrusion rod 35 works, and the pushing plate 81 connected to the fixed extrusion rod 35 in the pushing device starts to move back and forth, so that the solid impurities are pushed out of the entire pretreatment box 2, which is simple and efficient, and the limiting bevel 82 and the bevel provided at the entrance of the impurity collecting box 7 complement each other at right angles, and can also achieve the limiting effect, so that the distance that the pushing plate 81 pushes the solid impurities is limited, and then the impurity collecting box 7 is provided with a slope on the leftmost side to facilitate the falling and collection of solid impurities, which can also be more efficient and simple.

[0040] Furthermore, a lifting plate 61 is provided at the upper end of the liquid outlet collection box 6, and liquid outlet bevels 62 are provided on the front and rear sides of the lifting plate 61. Liquid outlet grooves are evenly provided on the surface of the liquid outlet bevel 62, and a lifting telescopic rod 63 is fixedly connected to the center position of the lower end of the lifting plate 61. A lifting cylinder 64 is provided at the lower end of the lifting telescopic rod 63, and the upper end shell of the liquid outlet collection box 6 is a trapezoidal structure. The size of the upper end of the liquid outlet collection box 6 is the same as that of the lifting plate 61, and the area of ​​the upper end shell of the liquid outlet collection box 6 is distributed in a manner of small at the top and large at the bottom. The middle shell of the liquid outlet collection box 6 is a trapezoidal structure with large at the top and small at the bottom, and the lower end shell of the liquid outlet collection box 6 is rectangular, and the lifting cylinder 64 is arranged on the outer side of the lower end of the liquid outlet collection box 6. An external hose 65 is provided on the right side, and a lifting plate 61 is provided on the upper end of the liquid collecting box 6. The liquid outlet bevels 62 provided on the front and rear sides of the lifting plate 61 can recover the waste liquid in the liquid collecting box 6 along the liquid outlet bevels 62 as the lifting plate 61 rises and falls, which is simple and efficient. Then the liquid collecting box 6 is set to be trapezoidal at the upper end, trapezoidal in the middle, and rectangular at the lower end. The trapezoidal at the upper end is small at the top and large at the bottom, and the middle is large at the top and small at the bottom. The small diameter of the trapezoidal at the upper end is the same as the area of ​​the lifting plate 61, and the small diameter of the lower end of the trapezoidal at the middle is the same as the area of ​​the lifting plate 61. The diameter between the upper end and the middle is larger than the length and width of the lifting plate 61, which can facilitate the outflow of liquid and ensure that the liquid collecting box 6 is convenient for recovering waste liquid.

[0041] Furthermore, by utilizing the extrusion molding of the extrusion plate 21, solid impurities are not easily dropped into the liquid collection box 6 due to the lifting effect, and waste liquid recovery can be achieved without setting a filter screen, which greatly saves material costs.

[0042] Furthermore, an extrusion bevel 211 is provided at the lower end of the extrusion plate 21, and a liquid outlet bevel 62 is provided at the lower end of the extrusion bevel 211, and the inclination angle of the extrusion bevel 211 and the inclination angle of the liquid outlet bevel 62 are exactly complementary to each other to form a right angle. The extrusion bevel 211 is provided to limit the pressing distance of the extrusion plate 21 to prevent the sealing effect of the entire pretreatment box 2 from being destroyed due to the extrusion transition of the extrusion plate 21.

[0043] A pretreatment process of a mechanical pretreatment system for food waste comprises step S1: a feed box 1 collects food waste;

[0044] Step S2: extrusion, the extrusion plates 21 arranged at the front and rear sides extrudes the food waste;

[0045] Step S3: collecting waste liquid. During the extrusion process, the lifting plate 61 is at the uppermost position, and the extruded waste liquid flows along the liquid outlet bevel 62 into the liquid outlet collection box 6;

[0046] Step S4: repeat steps S1-S3 until the volume in the pretreatment box 2 reaches the standard;

[0047] Step S5: Pushing out the waste, first the cylinder 5 starts to work, so that the baffle 52 separates the unloading box 1 and the pretreatment box 2, and then the extrusion device 3 performs the last extrusion;

[0048] Step S6: The second cylinder 23 starts to work, pushing the blocking baffle 22 upward, and then the pushing device 8 starts to work, pushing the impurities in the pretreatment box 2 into the impurity collection box 7 for impurity recovery;

[0049] Step S7: Cleaning: clean water is added into the material box 1, and the lifting cylinder 64 drives the lifting plate 61 to descend, so that the communication area between the pretreatment box 2 and the lower end of the liquid collection box 6 becomes larger, and the clean water takes away fine impurities and enters the liquid collection box 6;

[0050] Step S8: Liquid recovery: the external hose 65 is arranged on the upper side of the lower end of the liquid collection box 6, and the waste liquid is recovered by using the external hose 65 to complete the pretreatment.

[0051] Furthermore, in the step S2, the extrusion plate 21 is extruded in the pretreatment box 2, and a protective cover is wrapped around the outside of the pretreatment box 2. The upper end of the protective cover is sealed, and the lower end is connected to the liquid collection box 6. The protective cover is arranged on the outside of the pretreatment box 2 in consideration of the fact that the sealing effect of the pretreatment box 2 deteriorates due to long-term extrusion and movement. The protective cover can be used to wrap the connection of the pretreatment box 2 where liquid may be squeezed out, thereby preventing the waste liquid from being directly squeezed out in the workshop and polluting the workshop. It is simple and efficient, and the protective cover is low in cost.

[0052] Furthermore, in step S7, when the lifting cylinder 64 controls the lifting plate 61 to rise to the highest position of the liquid collection box 6, the lifting plate 61 and the liquid collection box 6 can achieve sealed contact, and the liquid outlet bevel 62 and the extrusion bevel 211 complement each other at a right angle, and the extrusion position of the extrusion bevel 211 is limited. The liquid outlet bevel 62 and the extrusion bevel 211 complement each other at a right angle, which can not only achieve the limitation of the extrusion plate 21, prevent the extrusion plates 21 from getting too close to each other and extruding excessively, but also make the liquid outlet effect at the position of the liquid outlet bevel 62 better, ensuring the waste liquid collection, which is simple and efficient.

[0053] Working process: first pour the food waste from the feed box 1, and then the food waste enters the pretreatment box 2. At this time, the lifting plate 61 in the pretreatment box 2 is set at the uppermost end of the liquid collection box 6, and then the push plate 81 is set at the rightmost end of the pretreatment box 2, and the blocking baffle 22 is set at the leftmost end of the pretreatment box 2. Then the squeezing plate 21 starts to squeeze the food waste in the pretreatment box 2, and the lower end of the blocking baffle 22 completely blocks the right side entrance of the impurity collection box 7, and the blocking baffle 22 extends into the liquid collection box 6, so that the squeezed waste liquid will not enter The waste liquid is collected into the impurity collection box 7 to ensure complete separation of solid and liquid. The food waste is continuously added and squeezed. When there is no squeezing, the lifting plate 61 is lifted and lowered to a high degree so that the waste liquid can be collected into the liquid collection box 6. Because the squeezing of the squeezing plate 21 makes the entire food waste form a rectangular shape, the slight lifting of the lifting plate 61 will not cause the shape of the entire food waste, and no solid will enter the liquid collection box 6. In this way, the complete separation of solid and liquid can be achieved, and the existence of the filter net is abandoned, which reduces the problem of incomplete filtering of solid and liquid by the filter net and easy clogging. It is simple and efficient.

[0054] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0055] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0056] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical prompts of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A mechanical pretreatment system for kitchen waste, characterized in that: The invention comprises a material discharge box (1), the lower end of which is connected to a pretreatment box (2), the front and rear center positions of the pretreatment box (2) are fixedly connected to an extrusion device (3), the upper end of the right center position of the pretreatment box (2) is fixedly connected to a frame plate (4), the upper end of the frame plate (4) is fixedly connected to a cylinder (5), and the lower end of the frame plate (4) is provided with a pushing device (8), the left side of the cylinder (5) is connected to a telescopic rod (51), the left side of the telescopic rod (51) is connected to a baffle (52), the front and rear sides of the baffle (52) are slidably connected to the pretreatment box (2), the lower end of the pretreatment box (2) is provided with a liquid outlet collection box (6), and the left side of the pretreatment box (2) is connected to an impurity collection box (7).

2. A mechanical pretreatment system for kitchen waste according to claim 1, characterized in that: The front and rear ends of the pretreatment box (2) are slidably and sealedly connected to the same extrusion plate (21), and a blocking baffle (22) is provided on the left side of the pretreatment box (2). The right side of the pretreatment box (2) is movably and sealedly connected to a baffle (52), and the pretreatment box (2) is a rectangular frame. The front and rear ends of the frame plate (4) are fixedly connected to the rectangular frame. The blocking baffle (22) is movably connected to the impurity collection box (7), and the center position of the upper end of the blocking baffle (22) is fixedly connected to a lifting handle (24). The lower end of the left side of the lifting handle (24) is connected to a lifting telescopic rod, and the lower end of the lifting telescopic rod is connected to a No. 2 cylinder (23), and the lower end of the No. 2 cylinder (23) is fixedly connected to the impurity collection box (7).

3. A mechanical pretreatment system for kitchen waste according to claim 1, characterized in that: The extrusion device (3) at the rear end comprises a motor box (31), a motor is arranged inside the motor box (31), an output shaft is arranged on the left side of the motor, the left side of the output shaft is fixedly connected to a gear (32), the upper end of the gear (32) is meshedly connected to a rack (33), the upper end of the rack (33) is provided with a V-shaped groove (34), and the front end of the rack (33) is connected to a fixed extrusion rod (35), the front end of the fixed extrusion rod (35) is fixedly connected to an extrusion plate (21), the upper end of the V-shaped groove (34) is movably connected to a limiting conical ball (36), the right side of the limiting conical ball (36) is movably connected to a receiving block (37), and the lower end of the receiving block (37) is fixedly connected to the motor box (31).

4. A mechanical pretreatment system for kitchen waste according to claim 1, characterized in that: The ejection device (8) has the same structure as the extrusion device (3), and the ejection device (8) is provided with the same fixed extrusion rod (35). The right side of the fixed extrusion rod (35) in the ejection device (8) is fixedly connected to an ejection plate (81), and a limiting bevel (82) is provided at the lower end of the ejection plate (81).

5. The mechanical pretreatment system for kitchen waste according to claim 1, characterized in that: A lifting plate (61) is provided at the upper end of the liquid discharge collection box (6), and liquid discharge bevels (62) are provided at the front and rear sides of the lifting plate (61). Liquid discharge grooves are evenly provided on the surface of the liquid discharge bevels (62). A lifting telescopic rod (63) is fixedly connected to the center position of the lower end of the lifting plate (61), and a lifting cylinder (64) is provided at the lower end of the lifting telescopic rod (63). The upper end shell of the liquid discharge collection box (6) is a trapezoidal structure. The size of the upper end of the liquid discharge collection box (6) is the same as that of the lifting plate (61), and the area of ​​the upper end shell of the liquid discharge collection box (6) is distributed in a manner of being small at the top and large at the bottom. The middle shell of the liquid discharge collection box (6) is a trapezoidal structure with a large top and a small bottom, and the lower end shell of the liquid discharge collection box (6) is rectangular. The lifting cylinder (64) is arranged on the outer side of the lower end of the liquid discharge collection box (6), and an external hose (65) is provided on the right side of the lower end shell of the liquid discharge collection box (6).

6. A mechanical pretreatment system for kitchen waste according to claim 2, characterized in that: The lower end of the extrusion plate (21) is provided with an extrusion bevel (211), and the lower end of the extrusion bevel (211) is provided with a liquid outlet bevel (62), and the inclination angle of the extrusion bevel (211) and the inclination angle of the liquid outlet bevel (62) are complementary to each other to form a right angle.

7. A pretreatment process using the mechanical pretreatment system for food waste according to claims 1-6, characterized in that: include Step S1: the material box (1) collects the food waste; Step S2: extrusion, the extrusion plates (21) arranged at the front and rear sides extrudes the food waste; Step S3: collecting waste liquid. During the extrusion process, the lifting plate (61) is at the uppermost position, and the extruded waste liquid flows along the liquid outlet bevel (62) into the liquid outlet collection box (6); Step S4: repeat steps S1-S3 until the volume in the pretreatment box 2 reaches the standard; Step S5: Pushing out the waste, first the cylinder (5) starts to work, so that the baffle (52) separates the unloading box (1) and the pre-treatment box (2), and then the extrusion device (3) performs the last extrusion; Step S6: The second cylinder (23) starts to work, pushing the blocking baffle (22) upward, and then the pushing device (8) starts to work, pushing the impurities in the pretreatment box (2) into the impurity collection box (7) for impurity recovery; Step S7: Cleaning: clean water is added into the material discharge box (1), and the lifting cylinder (64) drives the lifting plate (61) to descend, so that the communication area between the pretreatment box (2) and the lower end space of the liquid outlet collection box (6) becomes larger, and the clean water takes away fine impurities and enters the liquid outlet collection box (6); Step S8: Liquid recovery: an external hose (65) is arranged on the upper side of the lower end of the liquid collection box (6), and the waste liquid is recovered by using the external hose (65) to complete the pretreatment.

8. A mechanical pretreatment process for kitchen waste according to claim 7, characterized in that: In the step S2, the extrusion plate (21) is extruded in the pretreatment box (2), and a protective cover is wrapped outside the pretreatment box (2), the upper end of the protective cover is sealed, and the lower end is connected to the liquid collection box (6).

9. A mechanical pretreatment process for kitchen waste according to claim 7, characterized in that: In step S7, when the lifting cylinder (64) controls the lifting plate (61) to rise to the highest position of the liquid outlet collection box (6), the lifting plate (61) and the liquid outlet collection box (6) can achieve sealed contact, and the liquid outlet bevel (62) and the extrusion bevel (211) complement each other to form a right angle, and the extrusion position of the extrusion bevel (211) is limited.

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