A dewatering machine for processing kitchen waste

Abstract

This utility model provides a dewatering machine for processing kitchen waste, belonging to the field of mechanical technology. It solves the problem of poor performance of existing dewatering machines. The dewatering machine includes: a frame with a hopper for holding kitchen waste mounted on top; a pressing box horizontally positioned below the hopper, containing two shaftless screws arranged side-by-side, rotating at different speeds; and a pressing cylinder located at the rear end of the pressing box and connected to it. The pressing cylinder is inclined upwards, and when the two shaftless screws rotate, they can compress and convey the kitchen waste along the pressing box to the pressing cylinder, and further convey it upwards to the designated position. This utility model features excellent performance.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a dewatering machine for processing kitchen waste, particularly a non-clogging dewatering machine for processing kitchen waste. Background Technology

[0002] Kitchen waste contains extremely high levels of moisture and organic matter, and it needs to be properly treated and processed before it can be transformed into new resources, such as fertilizer, feed, or biogas for fuel or power generation. The oil portion can be used to prepare biofuels.

[0003] Kitchen waste contains a high amount of solid waste, moisture, and other impurities, so it needs to be squeezed and dehydrated first. Then, the residue is further processed to obtain the grease, which can be reused.

[0004] Most extrusion dewatering machines used for food waste processing employ single-screw extrusion and apply pressure with axial or radial hydraulic pressure plates at the slag outlet to complete the extrusion and dewatering of food waste.

[0005] However, given that kitchen waste sorting is currently in its initial stage and the sorting quality is poor, the waste contains a lot of tangled debris such as plastic bags and fabrics, which easily clump together when the waste is squeezed. Moreover, regardless of whether axial or radial hydraulic pressure plates are used for pressurization, a certain pressure will always be applied in the axial direction of the spiral extrusion. When there is a lot of debris in the waste and it is squeezed into clumps, the waste can easily clog the slag outlet of the extruder, causing production interruption and affecting the efficiency of waste treatment.

[0006] In summary, to address the shortcomings of existing extrusion dewatering machines, this utility model designs an extrusion dewatering machine for kitchen waste treatment that has a reasonable structure and good performance. Summary of the Invention

[0007] This invention addresses the problems existing in the prior art by providing a reasonably structured and effective extrusion dehydrator for processing kitchen waste.

[0008] The objective of this utility model can be achieved through the following technical solution: a dewatering machine for processing kitchen waste, comprising:

[0009] The frame has a hopper on top for holding kitchen waste;

[0010] The extrusion box is horizontally positioned below the hopper. Inside the extrusion box, two shaftless screws are arranged in parallel and rotate at different speeds.

[0011] The squeezing cylinder is located at the tail end of the squeezing box and is connected to the squeezing box. The squeezing cylinder is set at an upward angle. When the two shaftless spirals rotate, they can squeeze and transport the kitchen waste along the squeezing box to the squeezing cylinder, and then further transport it upward to the designated position.

[0012] As a further improvement to this case, a first arc-shaped filter plate is fixed below the two shaftless spirals, and several rows of first filter holes are evenly distributed on the first arc-shaped filter plate. A first filter box connected to the extrusion box is installed at the bottom of the extrusion box.

[0013] As a further improvement in this case, a second arc-shaped filter plate is inclinedly arranged inside the extrusion cylinder, and several rows of second filter holes are evenly distributed on the second arc-shaped filter plate. A second filter tank connected to the extrusion cylinder is installed at the bottom of the extrusion cylinder.

[0014] As a further improvement to this case, the two shaftless helices are designated as the first helix and the second helix, with the pitch of the first helix being greater than that of the second helix.

[0015] As a further improvement in this case, the angle between the axis of the extrusion cylinder and the horizontal plane is α, and 35°≦α≦40°.

[0016] Compared with the prior art, the present invention has a reasonable structure. The compression box and compression cylinder enhance the compression effect on kitchen waste, which is conducive to the dehydration process. The inclined compression cylinder facilitates further compression of kitchen waste under gravity, resulting in a better compression effect. In addition, the combination of the filter plate and filter box facilitates the collection of water generated during the compression process, which is convenient for subsequent processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 yes Figure 1 A structural diagram from another perspective.

[0019] Figure 3 yes Figure 2 A structural diagram from another perspective.

[0020] In the diagram, 10 is the frame; 11 is the hopper; 20 is the extrusion box; 21 is the first arc-shaped filter plate; 211 is the first filter hole; 22 is the first filter tank; 30 is the extrusion cylinder; 31 is the second arc-shaped filter plate; 311 is the second filter hole; 32 is the second filter tank; 41 is the first screw; 42 is the second screw; 51 is the first reducer; and 52 is the second reducer. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0022] like Figures 1 to 3 As shown, this food waste dewatering machine includes:

[0023] The frame 10 has a hopper 11 for placing kitchen waste on top;

[0024] The extrusion box 20 is horizontally positioned below the hopper 11. Two shaftless screws are arranged side by side inside the extrusion box 20, and the two shaftless screws rotate at different speeds.

[0025] The extrusion cylinder 30 is located at the tail end of the extrusion box 20 and is connected to the extrusion box 20. The extrusion cylinder 30 is set at an upward angle. When the two shaftless spirals rotate, they can extrude kitchen waste along the extrusion box 20 to the extrusion cylinder 30, and further convey it upward to the designated position.

[0026] Currently, kitchen waste sorting is in its initial stage, with poor sorting quality. The waste contains a lot of tangled debris such as plastic bags and fabrics, which easily clump together when squeezed. Moreover, regardless of whether axial or radial hydraulic pressure plates are used, a certain pressure is always applied in the axial direction of the spiral extrusion. When there is a lot of debris and the waste clumps together, it is easy for the waste to clog the slag outlet of the extruder, causing production interruption and affecting the efficiency of waste treatment.

[0027] Therefore, this utility model provides a squeezing dewatering machine for kitchen waste treatment. By setting up the squeezing box 20 and the squeezing cylinder 30, the squeezing effect on kitchen waste is enhanced, which is conducive to the dewatering process. The squeezing cylinder 30 is set at an angle, which makes it easier for the kitchen waste to be further squeezed under the action of gravity, resulting in a good squeezing effect.

[0028] Specifically, in this embodiment, a combination of horizontal and inclined extrusion is preferred to dehydrate the kitchen waste. The horizontal extrusion section is equipped with an extrusion box 20, which extrudes and propels the kitchen waste through two shaftless spirals inside. The inclined extrusion uses an inclined extrusion cylinder 30. When the kitchen waste is conveyed upward along the extrusion cylinder 30, it is squeezed by gravity, which further extrudes the kitchen waste, thereby achieving a dual extrusion effect.

[0029] It is worth mentioning that in this embodiment, the extrusion cylinder 30 is set in the shape of a cylindrical tube to ensure that the kitchen waste is subjected to balanced forces in all directions during the extrusion process in the inclined cylinder, so as to achieve a better extrusion effect. At the same time, it ensures that the kitchen waste has a smooth discharge channel and is not prone to equipment blockage.

[0030] Under the premise of double extrusion, there is no need to set up a hydraulic plate structure at the tail outlet of the extrusion cylinder 30 for pressurization and extrusion. The tail of the extrusion cylinder 30 can be set as an open structure. The cylindrical structure of the extrusion cylinder 30, combined with the open outlet, further facilitates material discharge.

[0031] In addition, this embodiment adopts a dual-shaft shaftless screw setup, which on the one hand ensures sufficient extrusion force to push the kitchen waste, and on the other hand, the shaftless screw can avoid the entanglement of long strips of garbage such as plastic bags and straw ropes in kitchen waste, which can cause blockage of the extruder.

[0032] Preferably, a first arc-shaped filter plate 21 is fixed below the two shaftless spirals, and multiple rows of first filter holes 211 are evenly distributed on the first arc-shaped filter plate 21. A first filter box 22 connected to the extrusion box 20 is installed at the bottom of the extrusion box 20.

[0033] Furthermore, a second arc-shaped filter plate 31 is inclinedly arranged inside the extrusion cylinder 30, and multiple rows of evenly distributed second filter holes 311 are opened on the second arc-shaped filter plate 31. A second filter box 32 connected to the extrusion cylinder 30 is installed at the bottom of the extrusion cylinder 30.

[0034] In this embodiment, a first arc-shaped filter plate 21 and a second arc-shaped filter plate 31 are preferably provided in the squeezing box 20 and the squeezing cylinder 30, respectively. Each filter plate has evenly distributed filter holes. When the kitchen waste is squeezed, the water inside can flow along the filter plate to the corresponding filter box for collection, so as to facilitate subsequent processing and thus achieve dehydration of the kitchen waste.

[0035] Preferably, the first arc-shaped filter plate 21 is located below the two shaftless spirals. In actual operation, kitchen waste is transported along the first arc-shaped filter plate 21 and the second arc-shaped filter plate 31, which facilitates the smooth entry of the waste into the corresponding filter tank after the water is removed.

[0036] Preferably, the two shaftless helices are a first helice 41 and a second helice 42, respectively, and the pitch of the first helice 41 is greater than the pitch of the second helice 42.

[0037] In this embodiment, the two shaftless helices are preferably a first helice 41 and a second helice 42. The pitch of the first helice 41 is greater than that of the second helice 42. The reducers connected to the two helices are a first reducer 51 and a second reducer 52, respectively. In order to ensure that there is a certain conveying difference between the two shaftless helices, it is preferable that the speeds of the two reducers are different, with one running at a low speed and the other running at a relatively high speed.

[0038] Compared to the traditional single-axis spiral extrusion method, this embodiment adopts dual-axis differential extrusion: one axis runs at low speed and the other axis runs at a relatively high speed. This structural setting can increase the extrusion pressure and further avoid blockage at the rear end of the conveyor.

[0039] Preferably, the operating speed of the first reducer 51 is lower than that of the second reducer 52, so that the unit conveying capacity of the first screw 41 is less than that of the second screw 42. The two conveying directions are the same, which causes a conveying speed difference between the first screw 41 and the second screw 42. Under this structural setting, in addition to being subjected to the positive extrusion force of the two shaftless screws, the conveyed kitchen waste is also subjected to the effect of differential shearing force inside the kitchen waste, which can play a better shearing and extrusion effect on the organic matter contained in the waste.

[0040] Furthermore, the angle between the axis of the extrusion cylinder 30 and the horizontal plane is α, and 35°≦α≦40°.

[0041] In this embodiment, the extrusion cylinder 30 is preferably set at an inclination of 35°-40°. In actual use, a suitable inclination angle is selected within the range according to the overall structural dimensions, scale, and operating effect of the extruder. The kitchen waste is extruded in the extrusion cylinder 30 entirely by its own weight and friction with the cylinder body to achieve the extrusion purpose, without the need to design a special extrusion mechanism, making the structure simple and practical.

[0042] In this embodiment, an inclined extrusion method is added, which, compared with the traditional screw extruder, allows kitchen waste to stay in the equipment and be extruded for a longer time, resulting in a better extrusion effect.

[0043] This kitchen waste dewatering machine has a reasonable structure. The compression box 20 and compression cylinder 30 enhance the compression effect on the kitchen waste, which is beneficial to the dewatering process. The compression cylinder 30 is inclined, which makes it easier for the kitchen waste to be further compressed under the action of gravity, resulting in a good compression effect. In addition, the combination of the filter plate and the filter box makes it easy to collect the water generated during the compression process, which is convenient for subsequent processing.

[0044] The embodiments described herein are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or additions to the specific embodiments described, or substitutions made by those skilled in the art, should be covered within the scope of protection of the present invention.

Claims

1. A dewatering extruder for processing kitchen waste, characterized in that, include: The frame has a hopper on top for holding kitchen waste; The extrusion box is horizontally positioned below the hopper. Inside the extrusion box, two shaftless screws are arranged in parallel and rotate at different speeds. The squeezing cylinder is located at the tail end of the squeezing box and is connected to the squeezing box. The squeezing cylinder is set at an upward angle. When the two shaftless spirals rotate, they can squeeze and transport the kitchen waste along the squeezing box to the squeezing cylinder, and then further transport it upward to the designated position.

2. The extrusion dewatering machine for kitchen waste treatment according to claim 1, characterized in that, A first arc-shaped filter plate is fixed below the two shaftless spirals, and several rows of first filter holes are evenly distributed on the first arc-shaped filter plate. A first filter box connected to the extrusion box is installed at the bottom of the extrusion box.

3. The extrusion dewatering machine for kitchen waste treatment according to claim 2, characterized in that, A second arc-shaped filter plate is inclinedly arranged inside the extrusion cylinder, and several rows of second filter holes are evenly distributed on the second arc-shaped filter plate. A second filter tank connected to the extrusion cylinder is installed at the bottom of the extrusion cylinder.

4. The extrusion dewatering machine for kitchen waste treatment according to claim 1, characterized in that, The two shaftless helices are the first helix and the second helix, respectively, with the pitch of the first helix being greater than that of the second helix.

5. A dewatering extruder for treating kitchen waste according to claim 1, characterized in that, The angle between the centerline of the extrusion cylinder and the horizontal plane is α, and 35°≦α≦40°.

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