CN110030799B - Vacuum tank and tank door control device thereof - Google Patents
Vacuum tank and tank door control device thereof Download PDFInfo
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- CN110030799B CN110030799B CN201910345132.0A CN201910345132A CN110030799B CN 110030799 B CN110030799 B CN 110030799B CN 201910345132 A CN201910345132 A CN 201910345132A CN 110030799 B CN110030799 B CN 110030799B
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- tank
- door
- hydraulic cylinder
- cylinder assembly
- assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/08—Parts thereof
- F26B25/12—Walls or sides; Doors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
Abstract
The utility model provides a vacuum tank and vacuum tank's jar door controlling means relates to vacuum drying technical field. The vacuum tank comprises a tank body with an open end and a tank door capable of moving along a guide rail parallel to the end surface of the open end; the tank door can move towards or away from the tank body perpendicular to the guide rail. The tank door control device comprises a locking mechanism, a pressure detection assembly, a driving mechanism and a control assembly, wherein the locking mechanism comprises a hydraulic cylinder assembly and a limiting piece; the hydraulic cylinder assembly is used for driving the limiting piece to move towards or back to the tank body perpendicular to the guide rail; the pressure detection assembly is used for detecting the pressure of hydraulic oil of the hydraulic cylinder assembly and outputting a pressure value; the driving mechanism is used for driving the tank door to open or close; the control assembly is used for controlling the hydraulic cylinder assembly to drive the limiting piece to move back to the tank body when receiving the starting signal, and closing the hydraulic cylinder assembly and controlling the driving mechanism to drive the tank door to be opened when the pressure value reaches a threshold value.
Description
Technical Field
The utility model relates to a vacuum drying technical field particularly, relates to a vacuum tank and vacuum tank's jar door controlling means.
Background
Vacuum drying refers to a drying method in which the material is placed under negative pressure, heated properly to reach the boiling point under the negative pressure, and pumped out to remove moisture. A vacuum tank is indispensable equipment for vacuum drying, and an existing vacuum tank generally includes a tank body and a tank door that can be opened or closed, wherein the tank door is heavy, generally weighing several tons to several tens tons, resulting in inconvenience in opening and closing the existing tank door.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The present disclosure is directed to overcome the above-mentioned deficiencies in the prior art, and provides a vacuum tank and a tank door control device for the vacuum tank, which can realize automatic opening and closing of a tank door, and can lock and unlock the tank door.
According to one aspect of the present disclosure, there is provided a tank door control apparatus of a vacuum tank including a tank body having an open end and a tank door movable along a guide rail parallel to an end surface of the open end to open and close the open end; and the tank door can be perpendicular to the guide rail orientation or move dorsad the jar body, tank door controlling means includes:
the locking mechanism comprises a hydraulic cylinder assembly and a limiting piece, the hydraulic cylinder assembly is arranged on the tank body, and the limiting piece is connected with the hydraulic cylinder assembly; when the tank door is closed, the limiting piece can be detachably matched with the tank door, when the tank door is opened, the limiting piece can be separated from the tank door, and the hydraulic cylinder assembly is used for driving the limiting piece to move towards or away from the tank body perpendicular to the guide rail;
the pressure detection assembly is used for detecting the pressure of hydraulic oil of the hydraulic cylinder assembly and outputting a pressure value;
the driving mechanism is connected with the tank door and used for driving the tank door to open or close;
and the control assembly is connected with the pressure detection assembly and used for controlling the hydraulic cylinder assembly to drive the limiting piece to move back to the tank body when a starting signal is received, and closing the hydraulic cylinder assembly and controlling the driving mechanism to drive the tank door to be opened until the pressure value reaches a threshold value.
In an exemplary embodiment of the disclosure, the control assembly is configured to gradually increase the driving force of the hydraulic cylinder assembly to drive the position limiting member to move away from the tank body in a plurality of unlocking stages, and the driving force of each unlocking stage lasts for a first duration.
In an exemplary embodiment of the present disclosure, the control assembly includes:
the first control circuit is connected with the pressure detection assembly and used for outputting a first control signal when the starting signal is received and controlling the driving mechanism to drive the tank door to be opened until the pressure value reaches the threshold value;
and the first frequency conversion circuit is used for controlling the driving force of the hydraulic cylinder assembly to drive the limiting part to move back to the tank body to be gradually increased in a plurality of unlocking stages when the first control signal is received, and the driving force of each stage lasts for a first duration.
In an exemplary embodiment of the disclosure, the control assembly is further configured to control the driving mechanism to drive the tank door to close when receiving a closing signal; and after the tank door is closed, controlling the hydraulic cylinder assembly to drive the limiting piece to move towards the tank body until the pressure value reaches the threshold value, and closing the hydraulic cylinder assembly.
In an exemplary embodiment of the disclosure, the control assembly is configured to gradually increase the driving force of the hydraulic cylinder assembly to drive the position limiting member to move towards the tank body in a plurality of locking stages, and each locking stage lasts for a second duration.
In an exemplary embodiment of the present disclosure, the control assembly includes:
the second control circuit is used for outputting a second control signal when receiving the closing signal and controlling the driving mechanism to drive the tank door to close until the pressure value reaches the threshold value;
and the second frequency conversion circuit is used for controlling the driving force of the hydraulic cylinder assembly to drive the limiting piece to move towards the tank body to be gradually increased in a plurality of locking stages when a second control signal is received, and each locking stage lasts for a second duration.
In an exemplary embodiment of the present disclosure, the threshold is not less than 9 Mpa.
In an exemplary embodiment of the present disclosure, the number of the limiting members is plural; the hydraulic cylinder assembly includes:
the hydraulic station is used for providing hydraulic oil;
the hydraulic cylinders are distributed along the circumferential direction of the tank body, at most one hydraulic cylinder is arranged at the top and the bottom of the tank body, each hydraulic cylinder is connected with the hydraulic station, and the limiting parts are connected to the hydraulic cylinders in a one-to-one correspondence mode.
In an exemplary embodiment of the present disclosure, the first control circuit and the second control circuit are integrated in the same controller, and the first frequency conversion circuit and the second frequency conversion circuit are integrated in the same frequency conversion circuit.
According to one aspect of the present disclosure, there is provided a vacuum tank comprising a tank body and a tank door capable of opening and closing the tank body, the vacuum tank further comprising a tank door control device as described in any one of the above.
This vacuum tank and jar door controlling means thereof, on the one hand, accessible actuating mechanism drive jar door is opened or is closed, and when the jar door was closed, the locating part can be dismantled with the jar door and be connected, accessible hydraulic cylinder subassembly drive locating part moves towards the jar body to jar body pulling jar door, make jar door skew guide rail and laminate in open end, thereby lock the jar door, prevent that the jar door from loosening. On the other hand, when the tank door is opened, the hydraulic cylinder assembly drives the limiting piece to move back to the tank body, the tank door is pushed to the outer side of the tank body, the pressure of hydraulic oil can be detected through the pressure detection assembly, when the pressure value is larger than the threshold value, it can be judged that the hydraulic cylinder assembly cannot drive the limiting piece to continue to move, at the moment, the tank door is separated from the opening end and returns to the guide rail again, and the control assembly can control the driving mechanism to drive the tank door to be opened, so that the tank door is.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a schematic structural diagram of a tank door control device according to an embodiment of the present disclosure.
Fig. 2 is a schematic block circuit diagram of a tank door control device according to an embodiment of the present disclosure.
Fig. 3 is a schematic view of a control process of the tank door control device for opening the tank door according to the embodiment of the disclosure.
Fig. 4 is a schematic diagram of a control process of the tank door closing control device according to the embodiment of the disclosure.
Description of reference numerals:
100. a tank body; 200. a tank door; 300. a guide rail; 201. a fastener; 1. a locking mechanism; 11. a hydraulic cylinder assembly; 111. a hydraulic cylinder; 112. a hydraulic station; 12. a limiting member; 2. a pressure detection assembly; 3. a drive mechanism; 4. and a control component.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first" and "second" are used merely as labels, and are not limiting on the number of their objects.
The disclosed embodiment provides a door control apparatus for a vacuum tank, as shown in fig. 1 and 2, the vacuum tank having a tank body 100, a door 200, and a guide rail 300, the tank body 100 having an open end, the guide rail 300 being provided at the bottom of the open end of the tank body 100 and being parallel to the bottom edge of the open end, the door 200 being reciprocally movable along the guide rail 300 so as to open or close the open end, and the door 200 being also movable toward or away from the tank body 100 in a direction perpendicular to the open end so as to be biased or returned to the guide rail 300. Specifically, when the door 200 moves toward the can body 100 in a direction perpendicular to the open end, it may deviate from the guide rail 300 and be attached to the open end; when the door 200 moves away from the can 100 in a direction perpendicular to the open end, it returns to the guide 300 to be separated from the open end.
The tank door control device is used for controlling the tank door 200, and the tank door control device can comprise a locking mechanism 1, a pressure detection assembly 2, a driving mechanism 3 and a control assembly 4, wherein:
the locking mechanism 1 comprises a hydraulic cylinder assembly 11 and a limiting piece 12, the hydraulic cylinder assembly 11 is arranged on the tank body 100, the limiting piece 12 is connected with the hydraulic cylinder assembly 11, when the tank door 200 is closed at an open end, the limiting piece 12 can be detachably connected with the tank door 200, and when the tank door 200 is opened at the open end, the limiting piece 12 can be separated from the tank door 200; the hydraulic cylinder assembly 11 is used to drive the position limiting member 12 towards or away from the tank 100.
The pressure detection assembly 2 is used for detecting the pressure of the hydraulic oil of the hydraulic cylinder assembly 11 and outputting a pressure value. The driving mechanism 3 is connected to the tank door 200 for driving the tank door 200 to open or close.
The control component 4 is connected with the pressure detection component 2, and is used for controlling the hydraulic cylinder component 11 to drive the limiting piece 12 to move back to the tank body 100 when receiving a starting signal, and closing the hydraulic cylinder component 11 and controlling the driving mechanism 3 to drive the tank door 200 to open when a pressure value reaches a threshold value.
According to the control device of the embodiment of the disclosure, the driving mechanism 3 can drive the tank door 200 to open or close, when the tank door 200 is closed, the limiting member 12 is detachably connected with the tank door 200, and the hydraulic cylinder assembly 11 can drive the limiting member 12 to move towards the tank body 100 so as to pull the tank door 200 towards the tank body 100, so that the tank door 200 deviates from the guide rail 300 and is attached to the open end, thereby locking the tank door 200, preventing the tank door 200 from being loosened, and realizing sealing. Meanwhile, when the tank door 200 is opened, the hydraulic cylinder assembly 11 drives the limiting piece 12 to move back to the tank body 100, the tank door 200 is pushed to the outer side of the tank body 100, the pressure of hydraulic oil can be detected through the pressure detection assembly 2, when the pressure value is larger than the threshold value, it can be judged that the hydraulic cylinder assembly 11 cannot continuously drive the limiting piece 12 to continuously move, at the moment, the tank door 200 is separated from the opening end and returns to the guide rail 300 again, and the control assembly 4 can control the driving mechanism 3 to drive the tank door 200 to be opened, so that the tank door 200 is prevented from being locked.
The following describes each part of the tank door control device according to the embodiment of the present disclosure in detail:
as shown in fig. 1, the locking mechanism 1 can be used to lock the tank door 200 to the open end of the tank 100 when the tank door 200 is closed, so as to ensure the sealing effect and prevent the tank door 200 from loosening during the drying process. When it is necessary to open the tank door 200, the tank door 200 may be unlocked to open the tank door 200. The locking mechanism 1 may include a hydraulic cylinder assembly 11 and a limiting member 12, wherein:
the hydraulic cylinder assembly 11 can be arranged on the tank body 100, the limiting piece 12 is connected with the hydraulic cylinder assembly 11, the hydraulic cylinder assembly 11 is used for driving the limiting piece 12 to move towards the tank body 100 so as to lock the tank door 200, the hydraulic cylinder assembly 11 can also drive the limiting piece 12 to move back to the tank body 100 so as to unlock the tank door 200, the tank door 200 is pushed towards the outer side of the opening end, the tank door 200 returns to the guide rail 300, and the tank door 200 is opened.
The hydraulic cylinder assembly 11 may include a hydraulic cylinder 111 and a hydraulic station 112 connected to the hydraulic cylinder 111, wherein the hydraulic cylinder 111 may include a cylinder body and a piston shaft slidably penetrating through the cylinder body, and the specific structure of the hydraulic cylinder 111 is not particularly limited herein. The hydraulic station 112 may be configured to provide hydraulic oil for driving the piston shaft to move to the hydraulic cylinder 111, and the hydraulic station 112 may include a hydraulic pump, a first driving motor and an oil tank, wherein the first driving motor is configured to drive the hydraulic pump to operate so as to input the hydraulic oil in the oil tank to the hydraulic cylinder 111.
The stopper 12 may be connected to an end of the piston shaft away from the cylinder, so as to be moved toward or away from the tank 100 by the piston shaft. The tank door 200 may be provided with a locking member 201, when the tank door 200 moves to a closed position parallel to the end face of the open end, the locking member 201 is detachably engaged with the limiting member 12, and when the tank door 200 moves to the open position, the locking member 201 is gradually separated from the limiting member 12. For example, the locking member 201 has a slot for the limiting members 12 to slide in or out, and when the tank door 200 moves along the guide rail 300 toward the tank 100 and the open end is gradually closed, the notches of the slot face the front of the moving direction of the tank door 200, so that each limiting member 12 can be fitted into the slot along with the movement of the tank door 200; when the tank door 200 moves along the guide rail 300 away from the tank 100, the open end is gradually opened, and the engaging groove is gradually disengaged from the stopper 12. The driving force to the stopper 12 can be controlled by controlling the hydraulic cylinder assembly 11, thereby controlling the moving speed of the stopper 12. For example, the power of the hydraulic station 112, that is, the power of the first driving motor, may be increased to increase the driving force of the piston shaft to the limiting member 12, thereby increasing the moving speed of the piston shaft and the limiting member 12.
In an embodiment, the number of the limiting members 12 is plural, the hydraulic cylinder assembly 11 includes a hydraulic station 112 and a plurality of hydraulic cylinders 111, each of the hydraulic cylinders 111 may be distributed along the circumferential direction of the tank 100 and is connected to the hydraulic station 112, and each of the limiting members 12 is connected to each of the hydraulic cylinders 111 in a one-to-one correspondence. The hydraulic cylinders 111 can be driven simultaneously by the hydraulic station 112 to drive the stoppers 12 to lock or unlock the tank door 200.
As shown in fig. 1, the pressure detecting assembly 2 may be connected to the hydraulic cylinder assembly 11, and may detect the pressure of the hydraulic oil of the hydraulic cylinder assembly 11 and output the pressure value. The pressure detection assembly 2 may be a pressure value pressure sensor or other device capable of detecting a pressure value. For example, the pressure detecting assembly 2 may be connected to the hydraulic station 112 or to the hydraulic cylinder 111, and the pressure value is an input pressure value of the hydraulic cylinder 111 or an output pressure value of the hydraulic station 112.
As shown in fig. 1, the driving mechanism 3 is connected to the tank door 200 for driving the tank door 200 to open or close, for example, the driving mechanism 3 may include a second driving motor, a roller and a transmission component, the roller may be disposed at the bottom of the tank door 200 and engaged with the guide rail 300, the second driving motor may be fixed to a surface of the tank door 200 away from the tank body 100 and connected to the roller through the transmission component, and may drive the roller to roll, so as to make the tank door 200 move horizontally, and at the same time, when the hydraulic cylinder component 11 makes the tank door 200 move perpendicular to the guide rail 300 through the limiting component 12, the roller may be disengaged from or returned to the guide rail 300, or may be only deflected relative to the guide rail 300 without being disengaged from the guide rail. Of course, the driving mechanism 3 may be other structures as long as it can drive the tank door 200 to open or close, which is not listed here.
As shown in fig. 1 and 2, the control component 4 is connected to the pressure detecting component 2 and can receive the pressure value detected by the pressure detecting component 2. At the same time, the control assembly 4 can receive an activation signal, which is a signal to open the tank door 200, and which can be sent to the control assembly 4 by a user through a button or other switch, or sent to the control assembly 4 by other electronic devices in response to a user operation or satisfaction of a preset condition.
The driving force of the control assembly 4 for the hydraulic cylinder assembly 11 to drive the position limiting member 12 towards the tank 100 is gradually increased in a plurality of locking stages, each of which lasts for a second length of time and the driving force of the same locking stage is constant.
As shown in fig. 3, when the control component 4 receives the start signal, the hydraulic cylinder component 11 can be controlled to drive the limiting component 12 to drive the tank door 200 to move back to the tank body 100, meanwhile, the control component 4 can compare the pressure value with a threshold value, when the pressure value reaches the threshold value, the hydraulic cylinder component 11 can be closed, and the driving mechanism 3 is controlled to drive the tank door 200 to move along the guide rail 300 in a direction away from the tank body 100, so as to open the open end of the tank body 100. For example, the threshold value is not less than 9Mpa, where 9Mpa is a pressure value when the piston shaft of the hydraulic cylinder 111 is extended to an extreme position or blocked from moving, and the threshold value is not less than 9Mpa, for example, the threshold values may be 9Mpa, 10Mpa, 12Mpa, and the like.
In this process, the pressure value is used as a basis for determining whether the limiting member 12 reaches the position for unlocking the tank door 200, and the threshold value may be a pressure value when the piston shaft of the hydraulic cylinder 111 cannot move any more, at this time, the piston shaft does not move any more, so that the pressure value starts to increase gradually, so when the pressure value is greater than or equal to the threshold value, it is indicated that the piston shaft has reached the limiting position, and the tank door 200 has been pushed to the guide rail 300. Therefore, the position of the limiting member 12 can be judged without arranging a proximity switch, the proximity switch and corresponding wiring are omitted, and the structure is simplified.
Further, in order to make the unlocking process more stable and ensure that the process that the limiting piece 12 pushes the tank door 200 is more stable, the control assembly 4 can make the driving force of the hydraulic cylinder assembly 11 driving the limiting piece 12 to move away from the tank body 100 gradually increase in a plurality of unlocking stages, the driving force of each unlocking stage lasts for a first time period, and the driving force of the same unlocking stage is constant.
Taking the number of the unlocking stages as two as an example, the control assembly 4 may control the hydraulic cylinder assembly 11 to apply a driving force to the limiting member 12, so that the limiting member 12 moves away from the tank 100 and stops after a first duration; then, the control module 4 can control the hydraulic cylinder assembly 11 to increase the driving force to the position-limiting member 12, so that the position-limiting member 12 moves back to the tank 100 continuously, and stops after continuing for the first time period again.
In one embodiment, the control assembly 4 comprises a first control circuit and a first frequency conversion circuit, wherein:
the first control circuit is connected with the pressure detection assembly 2 and used for outputting a first control signal when receiving the starting signal, comparing the pressure value with the threshold value, and controlling the driving mechanism 3 to drive the tank door 200 to open when the pressure value reaches the threshold value. The first control circuit may be a PLC (programmable logic controller) or the like as long as the above-described functions are realized.
The first frequency conversion circuit is connected with the first control circuit, can receive a first control signal, and can control the driving force of the hydraulic cylinder assembly 11 driving the limiting piece 12 to move back to the tank body 100 when receiving the first control signal, so that the driving force is gradually increased in a plurality of unlocking stages, and the driving force of each stage lasts for a first duration. The first frequency conversion circuit may be a frequency converter or the like as long as the above-described function can be achieved.
Furthermore, as shown in fig. 2 and 4, the control component 4 may also control the tank door 200 to close, and specifically, the control component 4 may also receive a closing signal, which is a signal for closing the tank door 200, and may be sent to the control component 4 by a user through a button or other switch, or may be sent to the control component 4 by other electronic devices in response to a user operation or satisfaction of a preset condition.
When receiving the closing signal, controlling the driving mechanism 3 to drive the tank door 200 to close, i.e. to drive the tank body 100 to move along the guide rail 300 so as to close the open end of the tank body 100; and after the tank door 200 is closed, controlling the hydraulic cylinder assembly 11 to drive the limiting member 12 to move towards the tank body 100, meanwhile, the control assembly 4 can compare the pressure value with the threshold value, and when the pressure value reaches the threshold value, closing the hydraulic cylinder assembly 11 to lock the tank door 200.
In this process, the pressure value is used as a basis for determining whether the limiting member 12 reaches the position of the tank door 200, and the threshold value may be the pressure value of the hydraulic cylinder assembly 11 when the limiting member 12 pulls the tank door 200 to the open end of the tank body 100, at this time, the piston shaft cannot drive the limiting member 12 to move continuously toward the tank body 100. Therefore, whether the tank door 200 is attached to the tank body 100 or not can be determined through the pressure value and the threshold value, namely, the tank door 200 is locked, the position of the limiting piece 12 can be judged without arranging a proximity switch, the proximity switch and corresponding wiring are omitted, and the structure is simplified.
In an embodiment, the control assembly 4 comprises a second control circuit and a second frequency conversion circuit, wherein:
the second control circuit is connected with the pressure detection assembly 2 and used for outputting a second control signal when receiving the closing signal, comparing the pressure value with the threshold value, and controlling the driving mechanism 3 to drive the tank door 200 to close when the pressure value reaches the threshold value. The second control circuit may be a PLC (programmable logic controller) or the like as long as the above-described functions are realized.
The second frequency conversion circuit is connected to the second control circuit and is capable of receiving a second control signal, and when receiving the second control signal, the second frequency conversion circuit may control a driving force of the hydraulic cylinder assembly 11 to drive the limiting member 12 to move toward the tank 100, so that the driving force is gradually increased in a plurality of locking stages, and each locking stage lasts for a second duration. The second frequency conversion circuit may be a frequency converter or the like as long as the above-described function can be achieved.
The first control circuit and the second control circuit may be integrated in the same controller, for example, the first control circuit and the second control circuit may be the same PLC; the first frequency conversion circuit and the second frequency conversion circuit are integrated in the same frequency conversion circuit, for example, the first frequency conversion circuit and the second frequency conversion circuit can be the same frequency converter, thereby simplifying the structure. Of course, the first control circuit and the second control circuit may be two different controllers, and the first frequency conversion circuit and the second frequency conversion circuit may be different frequency converters.
In one embodiment, the number of the position-limiting members 12 is plural, the hydraulic cylinder assembly 11 includes a hydraulic station 112 and a plurality of hydraulic cylinders 111, each of the hydraulic cylinders 111 can be distributed along the circumferential direction of the tank 100, and at most one hydraulic cylinder 111 is provided at the top of the tank 100 and at most one hydraulic cylinder 111 is provided at the bottom of the tank 100. Each hydraulic cylinder 111 is connected to the hydraulic station 112, and each stopper 12 is connected to each hydraulic cylinder 111 in a one-to-one correspondence. Meanwhile, the tank door 200 has a plurality of fasteners 201, and each fastener 201 can be engaged with or disengaged from each limiting member 12 in a one-to-one correspondence manner, and specific principles can refer to the above description of the limiting members 12 and the fasteners 201, and are not described in detail herein. The hydraulic cylinders 111 can be driven simultaneously by the hydraulic station 112 to drive the stoppers 12 to lock or unlock the tank door 200. The pressure detecting assembly 2 may be connected to the hydraulic station 112 for detecting a pressure value of the hydraulic oil output from the hydraulic station 112. If the control component 4 detects that the pressure value does not reach the threshold value, it indicates that the piston shaft of at least one hydraulic cylinder 111 can still move, at this time, the control component 4 keeps the hydraulic cylinder component 11 open until the pressure value reaches the threshold value, which indicates that the piston shaft of each hydraulic cylinder 111 cannot move continuously, at this time, the tank door 200 completely returns to the guide rail 300 and can move along the guide rail 300 without being stuck. Therefore, under the condition of a plurality of hydraulic cylinders 111 and limiting members 12, the tank door 200 can be prevented from being opened or closed under the condition that part of the limiting members 12 are unlocked or unlocked, and the opening and closing processes of the tank door 200 can be smoothly carried out.
The disclosed embodiment also provides a vacuum tank including a vacuum tank having a tank body 100, a tank door 200, and a guide rail 300, the tank body 100 having an open end, the guide rail 300 being provided at the bottom of the open end of the tank body 100 and being parallel to the bottom edge of the open end, the tank door 200 being reciprocally movable along the guide rail 300 so as to open or close the open end, and at the same time, the tank door 200 being also movable toward or away from the tank body 100 in a direction perpendicular to the open end so as to be biased or returned to the guide rail 300. Specifically, when the door 200 moves toward the can body 100 in a direction perpendicular to the open end, it may deviate from the guide rail 300 and be attached to the open end; when the door 200 moves away from the can 100 in a direction perpendicular to the open end, it returns to the guide 300 to be separated from the open end. Meanwhile, the vacuum tank further comprises the tank door control device of any of the above embodiments, and the connection mode, control process and beneficial effects of the tank door control device, the tank body 100, the tank door 200 and the guide rail 300 have been described in detail in the embodiment of the tank door control device, and are not described again here.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A door control apparatus of a vacuum tank, the vacuum tank including a tank body having an open end and a tank door movable along a guide rail parallel to an end face of the open end to open and close the open end; and the jar door can be perpendicular to the guide rail orientation or dorsad the jar body removes, its characterized in that, jar door controlling means includes:
the locking mechanism comprises a hydraulic cylinder assembly and a limiting piece, the hydraulic cylinder assembly is arranged on the tank body, and the limiting piece is connected with the hydraulic cylinder assembly; when the tank door is closed, the limiting piece can be detachably matched with the tank door, when the tank door is opened, the limiting piece can be separated from the tank door, and the hydraulic cylinder assembly is used for driving the limiting piece to move towards or away from the tank body perpendicular to the guide rail;
the pressure detection assembly is used for detecting the pressure of hydraulic oil of the hydraulic cylinder assembly and outputting a pressure value;
the driving mechanism is connected with the tank door and used for driving the tank door to open or close;
and the control assembly is connected with the pressure detection assembly and used for controlling the hydraulic cylinder assembly to drive the limiting piece to move back to the tank body when a starting signal is received, and closing the hydraulic cylinder assembly and controlling the driving mechanism to drive the tank door to be opened until the pressure value reaches a threshold value.
2. The canister door control device according to claim 1, wherein the control assembly is configured such that the driving force of the hydraulic cylinder assembly to move the retainer away from the canister body is gradually increased in a plurality of unlocking stages, the driving force of each unlocking stage lasting for a first duration.
3. The door control apparatus of claim 2, wherein the control assembly comprises:
the first control circuit is connected with the pressure detection assembly and used for outputting a first control signal when the starting signal is received and controlling the driving mechanism to drive the tank door to be opened until the pressure value reaches the threshold value;
and the first frequency conversion circuit is used for controlling the driving force of the hydraulic cylinder assembly to drive the limiting part to move back to the tank body to be gradually increased in a plurality of unlocking stages when the first control signal is received, and the driving force of each stage lasts for a first duration.
4. The canister door control device according to claim 3, wherein the control assembly is further configured to control the driving mechanism to drive the canister door to close upon receiving a closing signal; and after the tank door is closed, controlling the hydraulic cylinder assembly to drive the limiting piece to move towards the tank body until the pressure value reaches the threshold value, and closing the hydraulic cylinder assembly.
5. The canister door control device according to claim 4, wherein the control assembly is configured such that the driving force for the hydraulic cylinder assembly to drive the retainer toward the canister body is gradually increased in a plurality of locking stages, and each locking stage lasts for a second period of time.
6. The door control apparatus of claim 5, wherein the control assembly comprises:
the second control circuit is used for outputting a second control signal when receiving the closing signal and controlling the driving mechanism to drive the tank door to close until the pressure value reaches the threshold value;
and the second frequency conversion circuit is used for controlling the driving force of the hydraulic cylinder assembly to drive the limiting piece to move towards the tank body to be gradually increased in a plurality of locking stages when a second control signal is received, and each locking stage lasts for a second duration.
7. The door control apparatus according to any one of claims 1 to 6, wherein the threshold value is not less than 9 MPa.
8. The canister door control device according to claim 1, wherein the number of the stoppers is plural; the hydraulic cylinder assembly includes:
the hydraulic station is used for providing hydraulic oil;
the hydraulic cylinders are distributed along the circumferential direction of the tank body, at most one hydraulic cylinder is arranged at the top and the bottom of the tank body, each hydraulic cylinder is connected with the hydraulic station, and the limiting parts are connected to the hydraulic cylinders in a one-to-one correspondence mode.
9. The canister door control apparatus according to claim 6, wherein the first control circuit and the second control circuit are integrated in a same controller, and the first inverter circuit and the second inverter circuit are integrated in a same inverter circuit.
10. A vacuum tank comprising a tank body and a tank door capable of opening and closing the tank body, characterized in that the vacuum tank further comprises a tank door control device according to any one of claims 1 to 9.
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| CN201910345132.0A CN110030799B (en) | 2019-04-26 | 2019-04-26 | Vacuum tank and tank door control device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910345132.0A CN110030799B (en) | 2019-04-26 | 2019-04-26 | Vacuum tank and tank door control device thereof |
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| CN110030799A CN110030799A (en) | 2019-07-19 |
| CN110030799B true CN110030799B (en) | 2020-12-11 |
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| CN205373389U (en) * | 2015-12-30 | 2016-07-06 | 楚天科技股份有限公司 | Translation door and vacuum drying equipment |
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| WO2005094538A2 (en) * | 2004-03-24 | 2005-10-13 | Apollo Hardwoods Company | Method and apparatus for drying materials including veneers |
| CN2696805Y (en) * | 2004-04-12 | 2005-05-04 | 郎丰海 | Safety interlocked device for vulcanizing boiler |
| CN101504246A (en) * | 2008-02-04 | 2009-08-12 | 中国农业机械化科学研究院呼和浩特分院 | Column type helical seed drying equipment employing solar hot air blowing system |
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