A split-type gate control system and method
By using pressure and displacement sensors to monitor the status of the gate and pusher in the split-type station, and combining this with the control system to control the actions of the pusher and gate, the problem of the compression box in the split-type station being difficult to close due to garbage rebound has been solved, thus achieving efficient garbage treatment and equipment operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XUZHOU XUGONG ENVIRONMENTAL TECH CO LTD
- Filing Date
- 2024-06-27
- Publication Date
- 2026-05-26
AI Technical Summary
When the compression chamber of the split-type station is full, the rebound of garbage makes it difficult to close the door, and garbage gets stuck at the bottom of the gate after closing. This affects the operating efficiency of the equipment and increases costs.
Pressure and displacement sensors are used to monitor the status of the gate and pusher. Combined with the control system, the actions of the pusher and gate are controlled by preset control parameters to achieve timely prevention of waste and smooth closure of the gate.
It effectively prevents waste rebound, reduces gate closing resistance, reduces the number of times the gate is closed under high pressure, improves system operating efficiency, prevents waste from being trapped in the gate, and reduces equipment modification costs.
Smart Images
Figure CN118597631B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a gate control system and method for a separate waste treatment station, belonging to the field of waste treatment technology. Background Technology
[0002] With the increasing urbanization rate and growing urban population, the total amount of domestic waste is constantly rising, making the disposal of this massive amount of waste an urgent issue. Waste disposal methods include landfill, recycling, and incineration, among which compressed landfill is a crucial method, leading to the development of waste compression stations. Currently operational waste compression stations can be categorized by structure into split-type stations, horizontal stations, vertical stations, and mobile stations, etc. These compression stations have similar functions but also unique characteristics, meeting the needs of different users. Among the many types of stations, split-type stations are favored by users due to their strong processing capacity, high degree of automation, configurability for large / medium / small stations, and high main unit utilization. However, split-type stations have also revealed some problems during use. Two particularly dissatisfying issues are the difficulty in closing the gate due to waste rebound after the compression chamber is full, and the presence of waste stuck at the bottom of the gate after closing. Solving these problems typically involves increasing the number of forced-pressure gate closures and adding additional shielding doors, which affects the station's operating efficiency and increases equipment procurement costs and potential failure points. Given the current application status of split-type stations, it is necessary to improve the closing method to solve the industry pain points of difficulty in closing the doors and the problem of garbage getting stuck. Summary of the Invention
[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a split-station gate control system and method that promptly prevents garbage rebound, reduces gate closing resistance, makes gate closing easier, reduces the number of times the gate is closed under pressure, and effectively improves system operating efficiency.
[0004] To achieve the above objectives, the present invention is implemented using the following technical solution:
[0005] In a first aspect, the present invention provides a split-station gate control system, comprising:
[0006] A gate, installed at the outlet of the compression chamber, is used to close or open the outlet of the compression chamber;
[0007] The pusher head is movably installed inside the compression chamber and is used to squeeze the waste inside the compression chamber;
[0008] A pressure sensor is installed in the oil circuit of the gate to monitor the gate pressure in real time and upload the data to the control system.
[0009] A displacement sensor, mounted on the pusher head, is used to monitor the displacement of the pusher head in real time and upload the data to the control system.
[0010] The control system receives and processes data uploaded by pressure and displacement sensors, and controls the movement of the pusher and gate according to preset control parameters.
[0011] Furthermore, the preset control parameters of the control system include: the upper limit of gate pressure P1, the maximum gate lowering operation time T1, the displacement value L1 of the upper edge of the pusher inclined surface retracting to the bottom of the gate, and the displacement value L2 of the lower edge of the pusher inclined surface retracting to the inside of the compressor host.
[0012] Furthermore, the control flow of the control system includes:
[0013] The pusher extends into the compression chamber with maximum pressure to squeeze the waste until the pusher is fully extended or the forward pressure is less than the rebound pressure of the waste. The pusher then stops moving forward and enters the pressure holding stage.
[0014] After the pressure holding period ends, the pusher head retracts. When the upper edge of the pusher head's inclined surface is below the gate, the pusher head stops retracting, and the gate begins to descend. When the pressure is greater than P1, the gate stops descending.
[0015] The pusher head retracts for a set time x and then stops. The gate descends again, and the above process is repeated until the lower edge of the pusher head slope retracts into the compressor host and then stops retracting.
[0016] After the pusher stops retracting, the gate descends to the bottom. If the gate descends to the bottom, the closing action ends. If the gate cannot descend to the bottom after the set time T1, the control system controls the gate to rise to the middle limit and repeats the above control process until the closing action ends.
[0017] Furthermore, the set time x is 1 second.
[0018] Furthermore, the control system also includes an alarm module, which issues an alarm signal when the gate pressure exceeds a preset gate pressure upper limit P1 and the duration exceeds a preset alarm time.
[0019] Furthermore, the control system also includes a recording module for recording the motion state, pressure data, displacement data, and control parameters of the pusher and gate.
[0020] Furthermore, the control system transmits data with the pressure sensor and displacement sensor via wired or wireless means.
[0021] Secondly, the present invention provides a method for controlling a split-station gate, applicable to the split-station gate control system described in any of the preceding claims, the method comprising:
[0022] The pusher extends into the compression chamber with maximum pressure to squeeze the waste until the pusher is fully extended or the forward pressure is less than the rebound pressure of the waste. The pusher then stops moving forward and enters the pressure holding stage.
[0023] After the pressure holding period ends, the pusher head retracts. When the upper edge of the pusher head's inclined surface is below the gate, the pusher head stops retracting, and the gate begins to descend. When the pressure is greater than P1, the gate stops descending.
[0024] The pusher head retracts for a set time x and then stops. The gate descends again, and the above process is repeated until the lower edge of the pusher head slope retracts into the compressor host and then stops retracting.
[0025] After the pusher stops retracting, the gate descends to the bottom. If the gate descends to the bottom, the closing action ends. If the gate fails to descend to the bottom after a set time T1, the control system controls the gate to rise to the middle limit position and repeats the above steps until the closing action ends.
[0026] Furthermore, the set time x is 1 second.
[0027] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:
[0028] By promptly preventing waste rebound and reducing door closing resistance, closing becomes easier, reducing the number of times the door is closed under pressure, thus improving system operating efficiency.
[0029] This invention effectively prevents garbage from being caught in the gate, eliminating the need for a shielding door on the compression box and preventing garbage caught in the gate from falling and polluting the site during the separation process.
[0030] The application of pressure sensors can ensure that the gate and the pusher are in close contact and prevent the gate from deforming due to excessive pressure.
[0031] This invention is highly operable, requires minimal modification to existing equipment, and is low in cost (only requires the addition of a gate oil circuit pressure sensor). Attached Figure Description
[0032] Figure 1 This is an overall layout diagram of the waste compression process provided in an embodiment of the present invention (push head pressure holding state);
[0033] Figure 2 This is an overall layout diagram of the waste compression process provided in an embodiment of the present invention (the upper edge of the inclined surface of the pusher head is located below the gate).
[0034] Figure 3 This is an overall layout diagram of the waste compression process provided in an embodiment of the present invention (the pusher head retracts into the compression host).
[0035] Figure 4 This is a flowchart of the high-pressure door closing control provided in an embodiment of the present invention.
[0036] In the diagram: ① Compression chamber; ② Lower edge of the pusher head inclined surface; ③ Pusher head; ④ Upper edge of the pusher head inclined surface; ⑤ Gate; ⑥ Pressure sensor; ⑦ Gate middle limit; ⑧ Gate lower limit; ⑨ Displacement sensor; ⑩ Control system; ⑪ Compression host. Detailed Implementation
[0037] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.
[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.
[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0040] Example 1, as Figures 1-3 As shown, this embodiment introduces a split-station gate control system. A pressure sensor ⑥ is installed on the oil circuit of gate ⑤ to monitor the pressure of gate ⑤; a displacement sensor ⑨ is installed on the pusher head ③ to monitor the displacement of pusher head ③. Gate closing is achieved through a combination of strong pressure from the pusher head and coordinated action between the pusher head and the gate.
[0041] In this embodiment, the data acquisition of pressure sensor ⑥, the data acquisition of displacement sensor ⑨, and the control of pusher ③ and gate ⑤ are all completed by control system ⑩. At the same time, control system ⑩ presets 4 control parameters: gate pressure upper limit P1, gate lowering maximum running time T1, displacement value L1 of the upper edge of pusher inclined surface ④ retracting to below gate, and displacement value L2 of the lower edge of pusher inclined surface ② retracting to the inside of compressor host ⑪.
[0042] In this embodiment, the control process for closing the gate, consisting of pusher ③, gate ⑤, pressure sensor ⑥, and displacement sensor ⑨, is as follows:
[0043] Step 1, Push Head ③ Strong Pressure: After the compression box ① is full of garbage, the control system ⑧ starts the door closing control process. First, the push head ③ extends into the compression box ① with maximum pressure (push head strong pressure) to squeeze the garbage. When the push head ③ is fully extended or the forward pressure is less than the garbage rebound pressure, the speed of the push head ③ returns to zero, and then enters the pressure holding stage to promote garbage shaping.
[0044] The second step is to close the gate for the first time after the pressure holding is completed. Pusher ③ moves backward. When the upper edge ④ of the inclined surface of pusher ③ is below the gate, pusher ③ stops moving backward (displacement of pusher ③ ≤ L1). Gate ⑤ begins to descend. Control system ⑧ collects the pressure value uploaded by pressure sensor ⑥ in real time. When the pressure is > P1, it means that gate ⑤ has contacted pusher ③ and gate ⑤ stops descending.
[0045] The third step involves the coordinated closing action of the pusher head ③ and the gate ⑤: the pusher head ③ moves backward for 1 second and then stops, and the gate ⑤ descends again. When the pressure is greater than P1, it means that the gate ⑤ has contacted the pusher head ③, and the gate ⑤ stops descending. At the same time, the pusher head ③ moves backward for 1 second and then stops... The above process is repeated until the lower edge ② of the inclined surface of the pusher head ③ moves backward into the interior of the compressor host ⑨ and then stops moving backward (the displacement of the pusher head ③ is less than or equal to L2).
[0046] Step 4, gate ⑤ descends to the bottom: if the displacement of pusher ③ is less than or equal to L2, gate ⑤ can descend to the bottom. At this time, the gate ⑤ descent action is started. There are two possible situations: if gate ⑤ descends to the bottom, the lower limit switch ⑧ is triggered, and the closing action ends; or if gate ⑤ cannot descend to the bottom after the set time T1, the control system ⑧ controls gate ⑤ to rise to the middle limit switch ⑦, and then repeats the above step 1.
[0047] Example 2: This example provides a split-station gate control method, applicable to the split-station gate control system described in any one of Examples 1. The method includes:
[0048] The pusher extends into the compression chamber with maximum pressure to squeeze the waste until the pusher is fully extended or the forward pressure is less than the rebound pressure of the waste. The pusher then stops moving forward and enters the pressure holding stage.
[0049] After the pressure holding period ends, the pusher head retracts. When the upper edge of the pusher head's inclined surface is below the gate, the pusher head stops retracting, and the gate begins to descend. When the pressure is greater than P1, the gate stops descending.
[0050] The pusher head retracts for a set time x and then stops. The gate then descends again, and the above process is repeated until the lower edge of the pusher head slope retracts into the compressor host and then stops retracting. The set time x is 1 second.
[0051] After the pusher stops retracting, the gate descends to the bottom. If the gate descends to the bottom, the closing action ends. If the gate fails to descend to the bottom after a set time T1, the control system controls the gate to rise to the middle limit position and repeats the above steps until the closing action ends.
[0052] like Figure 4 As shown, a split-type gate control system and method are implemented through the following steps:
[0053] A pressure sensor is installed in the gate oil circuit, and a displacement sensor is installed in the pusher head. The signals from both sensors are connected to the control system for real-time detection of the gate oil circuit pressure and the pusher head displacement. Once the compression chamber is full, the system initiates the high-pressure closing procedure, controlling the gate and pusher operation according to the following steps: The pusher advances at maximum pressure (high-pressure pusher advance) to squeeze the waste inside the compression chamber → the pusher's forward speed returns to zero → pressure is maintained → the pusher retracts → when the upper edge of the pusher's inclined surface retracts to below the gate, the pusher stops retracting → the gate descends → the gate pressure increases (indicating the gate is pressing on the pusher), the gate stops descending → the pusher retracts for 1 second and then stops retracting → the gate descends → the gate pressure increases (indicating the gate is pressing on the pusher), the gate stops descending → the pusher retracts for 1 second and then stops retracting, repeating this process until the lower edge of the pusher retracts into the compression unit, at which point the gate initiates its final descent process. The high-pressure closing ends when the gate falls to the lower limit; or, if the gate cannot descend to the lower limit, after a set time, the control system re-lifts the gate to perform a second / third high-pressure closing operation, thus ending the high-pressure closing action.
[0054] This embodiment achieves coordinated control and close cooperation between the gate and the pusher, promptly preventing the impact of garbage rebound on the gate closing. Its advantages are:
[0055] (1) By preventing garbage rebound in time, the resistance to closing the door is reduced, making it easier to close the door and reducing the number of times the door is closed under high pressure, thus improving the system's operating efficiency.
[0056] (2) The present invention effectively prevents garbage from being caught in the gate, and the compression box no longer needs to be designed with a shielding door. It also avoids garbage caught in the gate during the separation process from falling and polluting the site.
[0057] (3) The application of pressure sensors can ensure that the gate and the pusher are in close contact and avoid the gate from deforming due to excessive pressure.
[0058] (4) The present invention has good operability, requires little modification to existing equipment, and has low cost (only one gate oil circuit pressure sensor is added).
[0059] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A split-station gate control system, characterized in that, include: A gate, installed at the outlet of the compression chamber, is used to close or open the outlet of the compression chamber; The pusher head is movably installed inside the compression chamber and is used to squeeze the waste inside the compression chamber; A pressure sensor is installed in the oil circuit of the gate to monitor the gate pressure in real time and upload the data to the control system. A displacement sensor, mounted on the pusher head, is used to monitor the displacement of the pusher head in real time and upload the data to the control system. The control system is used to receive and process data uploaded by pressure sensors and displacement sensors, and control the movement of the pusher and gate according to preset control parameters; The preset control parameters of the control system include: upper limit of gate pressure P1, maximum gate lowering operation time T1, displacement value L1 of the upper edge of the pusher head inclined surface retracting to the bottom of the gate, and displacement value L2 of the lower edge of the pusher head inclined surface retracting to the inside of the compressor host. The control process of the control system includes: The pusher extends into the compression chamber with maximum pressure to squeeze the waste until the pusher is fully extended or the forward pressure is less than the rebound pressure of the waste. The pusher then stops moving forward and enters the pressure holding stage. After the pressure holding period ends, the pusher head retracts. When the upper edge of the pusher head's inclined surface is below the gate, the pusher head stops retracting, and the gate begins to descend. When the pressure is greater than P1, the gate stops descending. The pusher head retracts for a set time x and then stops. The gate descends again, and the above process is repeated until the lower edge of the pusher head slope retracts into the compressor host and then stops retracting. After the pusher stops retracting, the gate descends to the bottom. If the gate descends to the bottom, the closing action ends. If the gate cannot descend to the bottom after the set time T1, the control system controls the gate to rise to the middle limit of the gate and repeats the above control process until the closing action ends. The control system also includes an alarm module, which issues an alarm signal when the gate pressure exceeds the preset gate pressure upper limit P1 and the duration exceeds the preset alarm time.
2. The split-station gate control system according to claim 1, characterized in that, The set time x is 1 second.
3. The split-station gate control system according to claim 1, characterized in that, The control system also includes a recording module for recording the motion state, pressure data, displacement data, and control parameters of the pusher and gate.
4. The split-station gate control system according to claim 1, characterized in that, The control system transmits data to the pressure sensor and displacement sensor via wired or wireless means.
5. A method for controlling a split-type station gate, applicable to the split-type station gate control system described in claim 1, characterized in that, The method includes: The pusher extends into the compression chamber with maximum pressure to squeeze the waste until the pusher is fully extended or the forward pressure is less than the rebound pressure of the waste. The pusher then stops moving forward and enters the pressure holding stage. After the pressure holding period ends, the pusher head retracts. When the upper edge of the pusher head's inclined surface is below the gate, the pusher head stops retracting, and the gate begins to descend. When the pressure is greater than P1, the gate stops descending. The pusher head retracts for a set time x and then stops. The gate descends again, and the above process is repeated until the lower edge of the pusher head slope retracts into the compressor host and then stops retracting. After the pusher stops retracting, the gate descends to the bottom. If the gate descends to the bottom, the closing action ends. If the gate fails to descend to the bottom after a set time T1, the control system controls the gate to rise to the middle limit position and repeats the above steps until the closing action ends.
6. The split-station gate control method according to claim 5, characterized in that, The set time x is 1 second.