Kitchen waste squeezing device

Abstract

This utility model belongs to the field of waste treatment technology and discloses a kitchen waste pressing device. The device includes a pressing chamber, a pressing cylinder, a counter-pressing cylinder, and a control component. The pressing chamber has a waste discharge inlet and a waste discharge outlet. The pressing cylinder and the counter-pressing cylinder are located on opposite sides of the pressing chamber. The control component is connected to the pressing cylinder and the counter-pressing cylinder. The pressing cylinder includes a rodless chamber, a rod chamber, and a pressing push rod. The rodless chamber and the rod chamber are arranged side-by-side. The pressing push rod is slidably disposed within the rodless chamber and can reciprocate in a direction approaching or moving away from the pressing chamber. The control component is configured to control the return oil output from the rod chamber to be reintroduced into the rodless chamber. This device enables the pressing cylinder to move differentially forward when pressing waste. Compared to existing kitchen waste presses, it has a simpler structure and a higher degree of automation. The differentially forward pressing cylinder greatly improves the waste pressing rate and effectively enhances the waste treatment capacity of this kitchen waste pressing device.

Description

Technical Field

[0001] This utility model relates to the field of waste treatment technology, and in particular to a kitchen waste pressing device. Background Technology

[0002] With the acceleration of urbanization, the problem of food waste disposal has become increasingly prominent, posing a significant challenge to urban environmental sanitation and sustainable development. To effectively address this challenge, pretreatment processes such as dehydration of food waste are commonly used. The current mainstream approach involves pressing and dehydrating the waste fed in from the top inlet using a press, followed by screw conveying and collection via transfer containers. However, this method is cumbersome, has low automation, and suffers from unstable and slow pressing processes, making food waste treatment difficult and unable to effectively meet the actual waste processing capacity requirements.

[0003] Therefore, it is necessary to design a food waste pressing device to solve the problems existing in the current technology. Utility Model Content

[0004] The purpose of this invention is to provide a kitchen waste pressing device with a higher degree of automation, and to further improve the operating speed of the press and the efficiency of waste processing, so as to meet the needs of large-scale waste processing.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A kitchen waste pressing device includes a pressing chamber, a pressing oil cylinder, a counter-pressing oil cylinder, and a control component. The pressing chamber has a waste discharge inlet and a waste discharge outlet. The pressing oil cylinder and the counter-pressing oil cylinder are located on both sides of the pressing chamber. The control component is connected to the pressing oil cylinder and the counter-pressing oil cylinder. The pressing oil cylinder includes a rodless chamber, a rod chamber, and a pressing push rod. The rodless chamber and the rod chamber are arranged side by side. The pressing push rod is slidably disposed in the rodless chamber. The pressing push rod can reciprocate in a direction that approaches or moves away from the pressing chamber. The control component is configured to control the return oil output from the rod chamber to be reintroduced into the rodless chamber.

[0007] Preferably, the pressing cylinder includes a first operating state and a second operating state. When the pressing cylinder is in the first operating state, the rodless chamber and the rod chamber are in a connected state; when the pressing cylinder is in the second operating state, the rodless chamber and the rod chamber are in a closed state.

[0008] Preferably, the control component includes a main controller, a stroke detection component, and a differential pressure detection component. The main controller is connected to the stroke detection component, the pressing cylinder, and the counter-pressing cylinder. The stroke detection component is used to detect the stroke value of the pressing push rod and can transmit the stroke value to the main controller. The differential pressure detection component is used to detect the differential pressure value between the rodless chamber and the rod chamber. The main controller can control the pressing cylinder to switch between the first operating state and the second operating state according to the stroke value and the differential pressure value.

[0009] Preferably, the control component includes a data processor and a material specification detection component, the material specification detection component being configured to detect the thickness and volume of the waste cake, and the data processor being connected to the material specification detection component and configured to receive and statistically analyze the thickness and volume of the waste cake.

[0010] Preferably, the stroke detection component includes a first stroke trigger sensor, a second stroke trigger sensor, and a third stroke trigger sensor.

[0011] When the first stroke trigger sensor detects that the pressing push rod is in the first stroke range, the main controller can control the pressing cylinder to switch to the first operating state;

[0012] When the second stroke trigger sensor detects that the pressing push rod is in the second stroke range, the main controller can control the pressing cylinder to switch to the second operating state;

[0013] When the third stroke trigger sensor detects that the pressing push rod is in the third stroke range, the main controller can control the pressing push rod to move in a direction away from the pressing chamber;

[0014] The first travel interval is smaller than the second travel interval, and the second travel interval is smaller than the third travel interval.

[0015] Preferably, the stroke detection component further includes a fourth stroke trigger sensor and a fifth stroke trigger sensor. When the fourth stroke trigger sensor detects that the pressing push rod is in the fourth stroke range, the main controller can control the pressing cylinder to switch to the first operating state. When the fifth stroke trigger sensor detects that the pressing push rod is in the fifth stroke range, the main controller can control the pressing cylinder to switch to the second operating state.

[0016] The fourth travel interval is smaller than the third travel interval, and the fifth travel interval is larger than the third travel interval.

[0017] Preferably, the stroke detection component further includes a sixth stroke trigger sensor. When the sixth stroke trigger sensor detects that the pressing push rod is in the sixth stroke range, the main controller can control the pressing cylinder to close and stop. The sixth stroke range is smaller than the first stroke range.

[0018] Preferably, the control component further includes a compression pressure detection component and a timer. Both the compression pressure detection component and the timer are connected to the main controller. The compression pressure detection component is used to detect the compression pressure of the pressing push rod in the second operating state. The timer is used to record the duration when the pressing push rod first reaches the set compression pressure. The main controller can control the pressing push rod to move in the direction toward the pressing chamber according to the duration recorded by the timer.

[0019] Preferably, when the pressing push rod is in the sixth stroke range and the actual pressing pressure of the pressing push rod is less than the set pressing pressure, the main controller can control the pressing push rod to move in a direction away from the pressing chamber.

[0020] Preferably, the control component further includes an alarm device connected to the main controller. When the extrusion pressure in the pressing cylinder reaches the warning range, the extrusion pressure detection component can send a signal to the main controller so that the main controller can control the alarm device to issue a warning signal.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] This embodiment provides a kitchen waste pressing device. The pressing cylinder of the device includes a rodless chamber, a rod chamber, and a pressing push rod. The rodless chamber and the rod chamber are arranged side by side. The pressing push rod is slidably disposed in the rodless chamber. Under the driving action of the control component, the pressing push rod can reciprocate in the direction of approaching or moving away from the pressing chamber. The control component can control the return oil output from the rod chamber to be reintroduced into the rodless chamber, so that the pressing cylinder can achieve differential forward movement when pressing waste. Compared with the existing kitchen waste press, the structure is simpler and the degree of automation is higher. Moreover, the differential forward movement of the pressing cylinder greatly improves the cylinder running speed, thereby effectively enhancing the waste processing capacity of the kitchen waste pressing device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the kitchen waste pressing device provided in this embodiment of the utility model.

[0024] In the picture:

[0025] 1. Pressing chamber; 2. Pressing cylinder; 21. Pressing push rod; 3. Top cylinder; 31. Top push rod; 4. Feed hopper. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] The technical solution provided by this utility model will be described below with reference to the accompanying drawings and specific embodiments.

[0031] In the field of food waste treatment, the current mainstream model involves pressing and dehydrating the waste fed in from the top inlet using a press, followed by screw conveying, and then collection and transfer via a transfer box. However, this model has a relatively cumbersome pressing process, low automation, unstable pressing speed, and makes food waste treatment difficult, failing to effectively meet the waste treatment capacity required in actual situations.

[0032] To solve the above problems, refer to Figure 1 As shown, this embodiment provides a kitchen waste pressing device, which includes a pressing chamber 1, a pressing oil cylinder 2, a counter-pressing oil cylinder 3, and a control component. Taking a horizontal kitchen waste pressing device as an example, the pressing chamber 1 provided in this embodiment is provided with a pressing oil cylinder 2 and a counter-pressing oil cylinder 3 on its left and right sides, respectively. The pressing chamber 1 is placed vertically, and a feeding hopper 4 is provided at the top of the pressing chamber 1. The bottom of the feeding hopper 4 is open and connected to the waste discharge inlet located at the top of the pressing chamber 1. A waste discharge outlet is provided at the bottom of the pressing chamber 1 so that the waste cake formed after the waste is compressed can be directly discharged from the waste discharge outlet, which is convenient and quick. The control component is connected to the pressing oil cylinder 2 and the counter-pressing oil cylinder 3 to automatically control the opening and closing of the pressing oil cylinder 2 and the counter-pressing oil cylinder 3.

[0033] Specifically, in this embodiment, the pressing cylinder 2 includes a rodless chamber, a rod chamber, and a pressing push rod 21. The rodless chamber and the rod chamber are arranged side by side, and the pressing push rod 21 is slidably arranged in the rodless chamber. Under the driving action of the control component, the pressing push rod 21 can reciprocate in the direction of approaching or moving away from the pressing chamber 1. The control component can control the return oil output from the rod chamber to be reintroduced into the rodless chamber, so that the pressing cylinder 2 can achieve differential forward movement when pressing waste. Compared with the existing kitchen waste press, the structure is simpler and the degree of automation is higher. Moreover, the pressing cylinder 2 with differential forward movement greatly improves the pressing rate of waste, thereby effectively enhancing the waste processing capacity of the kitchen waste pressing device.

[0034] In this embodiment, the pressing cylinder 2 includes a first operating state and a second operating state. When the pressing cylinder 2 is in the first operating state, the hydraulic pump supplies oil into the rodless chamber, while the oil returning from the rod chamber does not directly return to the oil tank. Instead, it is reintroduced into the rodless chamber through the reversing valve in the pressing cylinder 2. Therefore, in the first operating state, the pressing push rod 21 has a stronger extension speed, thus shortening the stroke time of the pressing push rod 21 before it extends and contacts the pressing chamber 1, improving efficiency. It is understood that the first operating state provided in this embodiment is a differential motion state. When the pressing cylinder 2 is in the second operating state, the hydraulic pump supplies oil only into the rodless chamber (i.e., the piston side) of the pressing cylinder 2, while the oil in the rod chamber directly returns to the oil tank. At this time, the pressing cylinder 2 can press the waste with greater thrust. The stroke speed is slower than in the first operating state, but the thrust is more stable. It is understood that the second operating state provided in this embodiment is a non-differential state.

[0035] Specifically, in this embodiment, the control component includes a main controller, a stroke detection component, and a differential pressure detection component. The main controller is connected to the stroke detection component, the pressing cylinder 2, and the opposing cylinder 3. The stroke detection component detects the stroke value of the pressing push rod 21 and transmits the stroke value to the main controller. The differential pressure detection component detects the differential pressure value between the rodless chamber and the rod chamber. The main controller controls the pressing cylinder 2 to switch between a first operating state and a second operating state based on the stroke value and the differential pressure value. In other words, through the above configuration, the main controller can control the opposing push rod 31 in the opposing cylinder 3 to reciprocate in a direction close to or away from the pressing chamber 1, so that the pressing push rod 21 can press the waste by cooperating with the opposing push rod 31. On the other hand, it can also automatically control the operating state of the pressing cylinder 2 based on the stroke value and the differential pressure value. This achieves high operating efficiency, ensures high pressing power, and has a high degree of automation with less human intervention.

[0036] More specifically, in this embodiment, the stroke detection component includes a first stroke trigger sensor, a second stroke trigger sensor, and a third stroke trigger sensor. When the first stroke trigger sensor detects that the pressing push rod 21 is in the first stroke range, the main controller can control the pressing cylinder 2 to switch to the first operating state. When the second stroke trigger sensor detects that the pressing push rod 21 is in the second stroke range, the main controller can switch the pressing cylinder 2 to the second operating state. When the third stroke trigger sensor detects that the pressing push rod 21 is in the third stroke range, the main controller can control the pressing cylinder 2 to move in a direction away from the pressing chamber 1. In this embodiment, the first stroke range is smaller than the second stroke range, and the second stroke range is smaller than the third stroke range, so as to realize the reciprocating low-pressure pushing process of the pressing cylinder 2 through the control component.

[0037] More specifically, in this embodiment, the stroke detection component further includes a fourth stroke trigger sensor and a fifth stroke trigger sensor. When the fourth stroke trigger sensor detects that the pressing push rod 21 is in the fourth stroke range, the main controller can control the pressing cylinder 2 to switch to the first operating state, so that the pressing push rod 21 can move towards the pressing chamber 1 in a differential motion state. When the fifth stroke trigger sensor detects that the pressing push rod 21 has moved to the fifth stroke range, the main controller can control the pressing cylinder 2 to switch to the second operating state. In this embodiment, the fourth stroke range is set to be smaller than the third stroke range, and the fifth stroke range is larger than the third stroke range, so that the pressing cylinder 2 can approach the pressing chamber 1 after the low-pressure pushing process in a differential motion state, and perform high-pressure pressing on the waste in a non-differential operating state, thereby realizing the process of the pressing cylinder 2 reciprocating high-pressure pressing of the waste through the control component.

[0038] More specifically, in this embodiment, the stroke detection component also includes a sixth stroke trigger sensor. When the sixth stroke trigger sensor detects that the pressing push rod 21 is in the sixth stroke range, the main controller can control the pressing cylinder 2 to close and stop. In this embodiment, the sixth stroke range is set to be smaller than the first stroke range so that the main controller can accurately retract the pressing push rod 21 to the preset position. This can avoid the pressing push rod 21 from retracting too much and causing damage to the pressing cylinder 2, thereby improving the stability and working efficiency of the pressing cylinder 2.

[0039] Optionally, in this embodiment, the control component further includes a data processor and a material specification detection component. The material specification detection component is configured to detect the thickness and volume of the waste cake. The data processor is connected to the material specification detection component and can receive and statistically analyze the thickness and volume of the waste cake. This allows the control component to capture the specification information of the waste cake in real time, enabling users to monitor and evaluate the production volume of the waste cake within a specified time based on its specification information. Through the precise analysis of the data processor, users can better manage the production process, optimize production efficiency, and ensure that the production volume of the waste cake meets the expected standards.

[0040] Optionally, in this embodiment, the control component further includes a compression pressure detection component and a timer. Both the compression pressure detection component and the timer are connected to the main controller. The compression pressure detection component is used to detect the compression pressure of the pressing push rod 21 in the second operating state, and the timer is used to record the duration of the pressing push rod 21 when it first reaches the set compression pressure. The main controller can control the pressing push rod 21 to move in the direction toward the pressing chamber 1 according to the duration recorded by the timer. That is, when the pressing push rod 21 is in the second operating state, the pressing push rod 21 can compress the waste into a preliminary shape. At this time, the compression pressure on the pressing push rod 21 gradually increases until it first reaches the set compression pressure. At this time, the timer starts timing, and the time delay is the compression time, so as to ensure that the waste can accumulate and form a shape when the pressing push rod 21 retracts and will not scatter, which facilitates the subsequent pressing process of the pressing push rod 21 on the waste.

[0041] Furthermore, in this embodiment, when the pressing push rod 21 is in the fifth stroke range and the actual squeezing pressure of the pressing push rod 21 is less than the set squeezing pressure, the main controller can control the pressing push rod 21 to move away from the pressing chamber 1. This is so that when the garbage cake compression ratio is too large and the garbage cake is too thin, causing the pressing push rod 21 to be unable to reach the set squeezing pressure even when it is in the fifth stroke range, the main controller will then guide the pressing push rod 21 to stop moving forward and control the pressing push rod 21 to automatically return to the starting point. The system will then determine that it is in a material shortage state, so that the kitchen waste pressing device can stop operating, thereby helping to reduce the probability of the pressing push rod 21 being under pressure and worn.

[0042] Furthermore, in this embodiment, the control component also includes an alarm. When the alarm detects that the pressure limit inside the pressing cylinder 2 and the retraction distance of the pressing push rod 21 have reached the warning range, the alarm can immediately send an alarm signal to remind the user to deal with the problem in a timely manner, thereby further improving the safety of the entire device.

[0043] The following section uses the application of this kitchen waste pressing device in a practical engineering project as an example to illustrate the process of the device in detail:

[0044] In this embodiment, the basic parameters of the pressing cylinder 2 are: cylinder diameter 650mm, pressing pusher 21 rod diameter 460mm, maximum stroke set to 5560mm, rapid advance speed 700±10mm / s, return speed 700±10mm / s, and maximum cylinder pressure limit 31.5MPa. The basic parameters of the counter-pressing cylinder 3 are: cylinder diameter 650mm, counter-pressing pusher 31 rod diameter 460mm, maximum stroke set to 1850mm, rapid advance speed 700±10mm / s, return speed 700±10mm / s, and maximum cylinder pressure limit 31.5MPa.

[0045] The following is a complete cycle of the food waste pressing device:

[0046] 1. Section A11:

[0047] Section A11 is the working stage when the pressing cylinder 2 is in differential motion. The rapid advance speed of the pressing push rod 21 is set to 350±10mm / s. The starting point is the current position, and the ending position is controlled by stroke. The stroke range is between 175-3300mm. That is, when the pressing push rod 21 moves forward to the first stroke range (the first stroke range is 175-3300mm), the main controller can control the pressing cylinder 2 to be in the first operating state within the first stroke range, and the ending position of the first stroke range is set at 3300mm. In this embodiment, the control component also includes a display terminal, which is configured to display digital stroke values ​​and show the real-time movement positions of the pressing cylinder 2 and the counter-pressing cylinder 3. The control component can independently control the pressing cylinder 2 and the counter-pressing cylinder 3, so that their movements do not interfere with each other. During the first stroke range, when the pressing cylinder 2 is in a differential motion state, the pressure limit of the pressing cylinder 2 is adjusted to no more than 6.5 MPa, and when the pressure limit is reached, the alarm can sound an alarm and remind the user. The main controller can also control the pressing cylinder 2 to close and stop the forward movement of the pressing push rod 21.

[0048] 2. Section B11:

[0049] 1) Section B11 is the working stage where the pressing push rod 21 retracts into the rodless cavity, and the retraction speed is set to 700±10mm / s;

[0050] 2) The starting position of the retraction of the pressing push rod 21 is the current position, and the ending position is controlled by stroke. The initial position of the pressing cylinder 2 is set at 155mm. That is, when the pressing push rod 21 retracts to the sixth stroke range (the sixth stroke range is 145-155mm), the main controller can control the pressing cylinder 2 to close and stop, so that the pressing push rod 21 can accurately retract to the sixth stroke range.

[0051] In addition, it should be noted that in this embodiment, the main controller can record the endpoint position of the pressing push rod 21 each time it retracts. The endpoint position of the pressing push rod 21 cannot be less than 145mm (the specific endpoint position can be adjusted on the display terminal screen). When the endpoint position is less than 145mm multiple times (the number of times can be set), the alarm will issue an alarm signal to remind the user that the pressing push rod 21 has a retraction positioning failure, so that the user can accurately and quickly solve the problem of the pressing push rod 21.

[0052] 3. Section A12:

[0053] 1) Section A12 is the working stage where the pressing cylinder 2 is in both differential and non-differential motion states. The rapid advance speed of the pressing push rod 21 is set to 700±mm / s. The starting point of the movement is the end position of the pressing push rod 21 at section B11. The end position of section A12 is controlled by "pressure + time". Within the stroke range of 175-3300mm, the pressing cylinder 2 is in the first operating state. The pressure limit of the pressing cylinder 2 is adjusted to no more than 11.5MPa. When this pressure value is reached, the alarm is triggered, and the main controller controls the pressing cylinder 2 to close, stopping the pressing push rod 21 from moving forward.

[0054] 2) When the stroke is greater than 3300mm, that is, when the second stroke trigger sensor detects that the pressing push rod 21 is in the second stroke range, and the differential pressure detection component detects that the differential pressure of the pressing cylinder 2 reaches 13MPa, the main controller can simultaneously receive the position signal and pressure transmitted by the second stroke trigger sensor and the differential pressure detection component. Then it can immediately control the pressing cylinder 2 to automatically switch from the first operating state to the second operating state, so that the pressing push rod 21 can smoothly switch to the non-differential motion state to continue moving forward.

[0055] 3) In the second operating state, the pressing pusher 21 reaches the set extrusion pressure value for the first time after a delay of X seconds. At this time, the position of the pressing pusher 21 is the end position of section A12. In this embodiment, the system sets the extrusion pressure value to 24.5-29.5 MPa, with an initial value of 25 MPa (the initial value of the extrusion pressure can be adjusted on the display terminal screen). When the pressing pusher 21 first reaches the set extrusion pressure value, the pressing pusher 21 continues to move forward. During the forward movement, the pressure inside the pressing cylinder 2 may decrease, but this does not affect the timer. The time delay of X seconds is the time for the pressing pusher 21 to extrude waste. X can be adjusted between 0 and 20 on the display terminal screen, and the initial value of X is set to 5.

[0056] 4) After completing section A12, the pressing cylinder 2 is stopped. Simultaneously, the material specification detection component detects the thickness of the waste (dry component) in this section, and the data processor automatically calculates the thickness value. In this embodiment, when the stroke position of the pressing push rod 21 is 3300mm, the thickness of the dry component is 1975mm. The calculation formula is: 1975 - (a - 3300), where a is the stroke value of the pressing cylinder 2 at the stopped state after section A12 is completed, the unit of dry component thickness is meters, and the data precision is two decimal places. Simultaneously, the data processor automatically generates a production report on the thickness of the dry component for each cycle and automatically accumulates the length of all dry components from 0:00 to 24:00. The production report calculation formula is: Total length of all dry components in section A12 within the day / 1000 × 1.2 × 1.5 × 0.75 (density t / m³) = Y tons / day.

[0057] It should be noted that when the stroke value of the pressing cylinder 2 is 4025-5525mm (dry component thickness 1250-1150mm), that is, when the third stroke trigger sensor detects that the pressing push rod 21 has moved forward to the third stroke range, the pressing cylinder 2 can stop moving forward and the main controller will retract the pressing push rod 21 back to the starting position to prevent the pressing push rod 21 from moving too far forward and colliding with the top push rod 31.

[0058] 5) When the compression ratio of the dry component is too high, that is, when the thickness of the dry component is too small, the extrusion pressure on the pressing push rod 21 will not reach the set pressure limit value. Specifically, when the pressing push rod 21 is in the third stroke range, and the extrusion pressure detection component detects three times in a row that the cylinder pressure limit of the pressing push rod 21 does not reach the set pressure limit, it is determined that the thickness of the dry component in the pressing chamber 1 is too small and there is a shortage of material. At this time, the main controller can control the pressing cylinder 2 to stop running and send a warning signal to the outside through the alarm device to remind the user to perform the material replenishment operation in a timely manner.

[0059] 4. Section A13:

[0060] 1) Section A13 is the working stage where the pressing cylinder 2 is in the first operating state, and the differential forward speed of the pressing push rod 21 is set to 700±10mm / s;

[0061] 2) The starting position of the pressing push rod 21 is the position where the pressing push rod 21 in section A12 retracts to the initial position, that is, 155mm; the ending position is controlled by stroke. The ending stroke of section A13 is the fifth stroke interval. That is, when the fifth stroke trigger sensor detects that the pressing push rod 21 has moved forward to the fifth stroke interval, the main controller can control the pressing cylinder 2 to start, so that the pressing push rod 21 moves forward to the fifth stroke interval, that is, the position of 5525-5530mm, so that the pressing push rod 21 can perform the process of further pressing the dry components to form waste cake.

[0062] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A kitchen waste pressing device, characterized in that, The device includes a pressing chamber (1), a pressing cylinder (2), a counter-pressing cylinder (3), and a control assembly. The pressing chamber (1) is provided with a waste discharge inlet and a waste discharge outlet. The pressing cylinder (2) and the counter-pressing cylinder (3) are located on both sides of the pressing chamber (1). The control assembly is connected to the pressing cylinder (2) and the counter-pressing cylinder (3). The pressing cylinder (2) includes a rodless chamber, a rod chamber, and a pressing push rod (21). The rodless chamber and the rod chamber are arranged side by side. The pressing push rod (21) is slidably arranged in the rodless chamber. The pressing push rod (21) can reciprocate in a direction that is close to or away from the pressing chamber (1). The control assembly is configured to control the return oil output from the rod chamber to be reintroduced into the rodless chamber.

2. The kitchen waste pressing device according to claim 1, characterized in that, The pressing cylinder (2) includes a first operating state and a second operating state. When the pressing cylinder (2) is in the first operating state, the rodless chamber and the rod chamber are in a connected state. When the pressing cylinder (2) is in the second operating state, the rodless chamber and the rod chamber are in a closed state.

3. The kitchen waste pressing device according to claim 2, characterized in that, The control component includes a main controller, a stroke detection component, and a differential pressure detection component. The main controller is connected to the stroke detection component, the pressing cylinder (2), and the counter-pressing cylinder (3). The stroke detection component is used to detect the stroke value of the pressing push rod (21) and can transmit the stroke value to the main controller. The differential pressure detection component is used to detect the differential pressure value between the rodless chamber and the rod chamber. The main controller can control the pressing cylinder (2) to switch between the first operating state and the second operating state according to the stroke value and the differential pressure value.

4. The kitchen waste pressing device according to claim 3, characterized in that, The control component includes a data processor and a material specification detection component. The material specification detection component is configured to detect the thickness and volume of the waste cake. The data processor is connected to the material specification detection component and is configured to receive and statistically analyze the thickness and volume of the waste cake.

5. The kitchen waste pressing device according to claim 3, characterized in that, The stroke detection component includes a first stroke trigger sensor, a second stroke trigger sensor, and a third stroke trigger sensor. When the first stroke trigger sensor detects that the pressing push rod (21) is in the first stroke range, the main controller can control the pressing cylinder (2) to switch to the first operating state; When the second stroke trigger sensor detects that the pressing push rod (21) is in the second stroke range, the main controller can control the pressing cylinder (2) to switch to the second operating state; When the third stroke trigger sensor detects that the pressing push rod (21) is in the third stroke range, the main controller can control the pressing push rod (21) to move in a direction away from the pressing chamber (1); The first travel interval is smaller than the second travel interval, and the second travel interval is smaller than the third travel interval.

6. The kitchen waste pressing device according to claim 5, characterized in that, The stroke detection component also includes a fourth stroke trigger sensor and a fifth stroke trigger sensor. When the fourth stroke trigger sensor detects that the pressing push rod (21) is in the fourth stroke range, the main controller can control the pressing cylinder (2) to switch to the first operating state. When the fifth stroke trigger sensor detects that the pressing push rod (21) is in the fifth stroke range, the main controller can control the pressing cylinder (2) to switch to the second operating state. The fourth travel interval is smaller than the third travel interval, and the fifth travel interval is larger than the third travel interval.

7. The kitchen waste pressing device according to claim 5, characterized in that, The stroke detection component also includes a sixth stroke trigger sensor. When the sixth stroke trigger sensor detects that the pressing push rod (21) is in the sixth stroke range, the main controller can control the pressing cylinder (2) to close and stop. The sixth stroke range is smaller than the first stroke range.

8. The kitchen waste pressing device according to claim 7, characterized in that, The control component also includes a pressure detection component and a timer. Both the pressure detection component and the timer are connected to the main controller. The pressure detection component is used to detect the pressure of the pressing push rod (21) in the second operating state. The timer is used to record the duration when the pressing push rod (21) first reaches the set pressure. The main controller can control the pressing push rod (21) to move in the direction toward the pressing chamber (1) according to the duration recorded by the timer.

9. The kitchen waste pressing device according to claim 8, characterized in that, When the pressing push rod (21) is in the sixth stroke range and the actual pressing pressure of the pressing push rod (21) is less than the set pressing pressure, the main controller can control the pressing push rod (21) to move in a direction away from the pressing chamber (1).

10. The kitchen waste pressing device according to claim 8, characterized in that, The control component also includes an alarm device connected to the main controller. When the extrusion pressure in the pressing cylinder (2) reaches the warning range, the extrusion pressure detection component can send a signal to the main controller so that the main controller can control the alarm device to issue a warning signal.

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