Air control box for powder hopper docking station

Abstract

An air control box for a powder hopper docking station comprises an air source, a mechanical switch valve, a clamping air cylinder air control valve, a jacking air cylinder air control valve, a vibrator extending air cylinder air control valve, a valve opening air cylinder air control valve and a vibration air control valve. When the mechanical switch valve is located at the butt joint station A, the position B of the pneumatic control valve of the clamping air cylinder is conducted; a position B of the jacking air cylinder pneumatic control valve and a position B of the vibrator extending air cylinder pneumatic control valve are both communicated with a clamping air path of the clamping air cylinder in a delayed mode. The A position of the valve opening cylinder pneumatic control valve is communicated with a push-out gas circuit of the vibrator extending cylinder B position; the position A of the vibration pneumatic control valve is communicated with an opening gas circuit of the position A of the valve opening cylinder; when the mechanical switch valve is located at a disconnection station B, the station B of the pneumatic control valve of the valve opening cylinder is directly conducted; and the A position of the clamping cylinder pneumatic control valve is in delayed conduction with a closing gas path of the B position of the valve opening cylinder through the disconnection delay pneumatic control valve. The automatic butt joint device can be used in an explosion-proof environment without circuit control, one-key operation is achieved, and automatic butt joint of the charging vehicle and the butt joint station is achieved.

Description

Technical Field

[0001] This utility model relates to a powder feeding and docking device, and in particular to a pneumatic control box for a powder hopper docking station. Background Technology

[0002] In powder material processing, it is often necessary to connect the prepared formula to the point of use. Generally, a docking device is placed at the point of use, which is also called a docking station.

[0003] Currently, formulated feed mainly uses methods such as Figure 1 The feeding cart 10 shown is used for transportation. The feeding cart 10 includes a mobile frame 11 and a hopper 12 set on the top of the mobile frame. The mobile frame is provided with docking slots 111 on both sides. The top of the hopper is provided with a feeding port and the bottom of the hopper is provided with a discharge port 121. The discharge port is provided with a discharge valve 122 that can be rotated and opened, preferably a butterfly valve.

[0004] like Figure 2 As shown, the existing docking station 20 includes a clamping block 21, a clamping cylinder 111, a docking ring 22, a lifting cylinder 221, a vibrator 23, a vibrator extension cylinder 231, a discharge valve opening gripper 24, and a valve opening cylinder 241.

[0005] like Figure 3 As shown, the feeding vehicle is moved to the docking station, and the feeding vehicle docks with the docking station in the following order:

[0006] A. The clamping cylinder drives the two clamping blocks to clamp, thereby engaging with the two docking slots and fixing the position of the feeding vehicle.

[0007] B. The lifting cylinder drives the docking ring to rise and dock with the discharge port located above, which facilitates the discharge of materials.

[0008] C. The vibrator extension cylinder drives the vibrator to extend, so that the vibrator approaches or contacts the discharge side wall of the hopper.

[0009] D. The valve opening cylinder drives the clamping jaws to rotate, causing the discharge valve to open and allowing material to be supplied to the docking point.

[0010] E. The vibrator vibrates to shake the discharge side wall of the hopper, preventing powder blockage and ensuring smooth discharge.

[0011] After material consumption is completed, the feeding vehicle and the docking station will disconnect and reconnect in the following order:

[0012] a. The valve opening cylinder drives the clamping jaws to rotate in the opposite direction when the discharge valve is opened, causing the discharge valve to close and stopping the material supply at the docking point.

[0013] b. The vibrator stops vibrating.

[0014] c. The clamping cylinder, lifting cylinder, and vibrator extension cylinder can operate simultaneously or sequentially. Specifically, the clamping cylinder drives the two clamping blocks to loosen, releasing the position fixation of the feeding cart; the lifting cylinder drives the docking ring to descend, releasing the docking with the discharge port; and the vibrator extension cylinder drives the vibrator to retract, moving it away from the hopper.

[0015] At this point, the feeding vehicle can be freely removed from the docking station, thus achieving undocking.

[0016] Regarding the docking and undocking sequence of the aforementioned feeding vehicle and docking station, the current main approach is electronic control, which programs the sequence of operation of the valve opening cylinder, clamping cylinder, lifting cylinder, vibrator extension cylinder, and vibrator. However, this electronic control method has the following shortcomings in use and needs improvement.

[0017] 1. When used in explosion-proof areas, to avoid the risk of explosion, the connection site must not involve electricity.

[0018] 2. Electrical control requires a lot of connecting cables. During cable installation, the cost may increase significantly due to the long distance of the power source. Utility Model Content

[0019] The technical problem this utility model aims to solve is to address the shortcomings of the existing technology by providing a pneumatic control box for a powder hopper docking station. This pneumatic control box can be used in an explosion-proof environment without circuit control, and it uses a mechanical switch valve for one-button "docking" operation, automatically connecting the feeding vehicle and the docking station in a specific order, making operation simple and quick. Furthermore, it also uses a mechanical switch valve for one-button "undocking" operation, automatically connecting and disconnecting the feeding vehicle and the docking station in a specific order.

[0020] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0021] A pneumatic control box for a powder hopper docking station includes an air source, a mechanical switching valve, and five pneumatic control valves; wherein the air source supplies air to each pneumatic control valve.

[0022] The five pneumatic control valves are the clamping cylinder pneumatic control valve, the lifting cylinder pneumatic control valve, the vibrator extension cylinder pneumatic control valve, the valve opening cylinder pneumatic control valve, and the vibration pneumatic control valve.

[0023] The clamping cylinder pneumatic control valve has two actuation stations, A and B, which control the opening and closing of the clamping cylinder, respectively.

[0024] The lifting cylinder pneumatic control valve has two execution positions, A and B, which control the lowering and lifting actions of the lifting cylinder, respectively, and are time-delay valves.

[0025] The pneumatic control valve for the vibrator extension cylinder has two operating positions, A and B, which control the retraction and extension actions of the vibrator extension cylinder, respectively, and are time-delay valves.

[0026] The valve opening cylinder pneumatic control valve has two execution positions, A and B, which control the opening and closing actions of the valve opening cylinder, respectively.

[0027] The vibratory pneumatic control valve has an actuation station A, which is used to control the vibration of the vibrator.

[0028] The mechanical switching valve has a docking station A and a disconnecting station B.

[0029] When the mechanical switch valve is in docking position A, position B of the clamping cylinder pneumatic control valve is directly connected; position B of the lifting cylinder pneumatic control valve and position B of the vibrator extension cylinder pneumatic control valve are both connected to the clamping air circuit of the clamping cylinder, and are connected after a delay; position A of the opening cylinder pneumatic control valve is connected to the push-out air circuit of position B of the vibrator extension cylinder; position A of the vibration pneumatic control valve is connected to the opening air circuit of position A of the opening cylinder.

[0030] When the mechanical switch valve is in the off position B, the B position of the valve opening cylinder pneumatic control valve is directly connected; the A position of the clamping cylinder pneumatic control valve is connected to the closing air circuit of the valve opening cylinder B position through the disconnection delay pneumatic control valve, and is connected after a delay.

[0031] Both the clamping cylinder pneumatic control valve and the opening cylinder pneumatic control valve are two-position five-way double pneumatic control valves.

[0032] The disconnection delay pneumatic control valve is a two-position five-way single pneumatic control delay valve. A throttle valve is installed on the connection air line between the disconnection delay pneumatic control valve and the clamping cylinder pneumatic control valve at position A.

[0033] A throttle valve is also installed on the push-out air path that connects position A of the opening cylinder pneumatic control valve to position B of the vibrator extension cylinder.

[0034] Both the lifting cylinder pneumatic control valve and the vibrator extension cylinder pneumatic control valve are two-position five-way single pneumatic control time-delay valves.

[0035] The vibration control valve is a two-position three-way single-pneumatic control valve.

[0036] A one-way valve is installed between position A of the clamping cylinder pneumatic control valve and position B of the mechanical switch valve.

[0037] A check valve is installed between position A of the pneumatic control valve of the valve opening cylinder and position A of the docking station of the mechanical switch valve.

[0038] The mechanical switching valve is a two-position four-way valve.

[0039] The gas source is 6 kg of air.

[0040] This utility model has the following beneficial effects:

[0041] 1. This invention is applicable to explosion-proof environments and requires no circuit control.

[0042] 2. This invention uses a mechanical switch valve for one-button "docking" operation, which automatically connects the feeding vehicle and the docking station in a specific order, making the operation simple and quick.

[0043] 3. The present invention also adopts a one-button "un-connection" operation of a mechanical switch valve to realize the automatic un-connection sequence of the feeding vehicle and the docking station. Attached Figure Description

[0044] Figure 1 A schematic diagram of the structure of a feeding vehicle in the prior art is shown.

[0045] Figure 2 A schematic diagram of the docking station structure in the prior art is shown.

[0046] Figure 3 The diagram shows a schematic of the structure after the feeding vehicle docks with the docking station in the prior art.

[0047] Figure 4 This diagram shows a pneumatic control box for a powder hopper docking station according to the present invention.

[0048] Among them are:

[0049] 1. Air source; 2. Throttling valve 1; 3. Check valve 1; 4. Clamping cylinder pneumatic control valve; 5. Mechanical switching valve; 6. Lifting cylinder pneumatic control valve; 7. Vibrator extension cylinder pneumatic control valve;

[0050] 8. Opening cylinder pneumatic control valve; 8-1. Throttling valve two; 8-2. Check valve two; 8-3. Disconnection delay pneumatic control valve;

[0051] 9. Vibration pneumatic control valve;

[0052] 10. Feeding vehicle;

[0053] 11. Mobile frame; 111. Connecting slot;

[0054] 12. Hopper; 121. Discharge port; 122. Discharge valve;

[0055] 20. Docking station;

[0056] 21. Clamping block; 211. Clamping cylinder; 22. Docking ring; 221. Lifting cylinder; 23. Vibrator; 231. Vibrator extension cylinder; 24. Discharge valve opening gripper; 241. Valve opening cylinder. Detailed Implementation

[0057] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0058] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0059] like Figure 4 As shown, a pneumatic control box for a powder hopper docking station includes an air source 1, a mechanical switching valve 5, and five pneumatic control valves; wherein, the air source supplies air to each pneumatic control valve, and in this embodiment, it is preferably 6 kg of air.

[0060] The mechanical switching valve is preferably a two-position four-way valve, with a docking position A and a disconnecting position B, which can be manually switched with one button.

[0061] The five pneumatic control valves are: clamping cylinder pneumatic control valve 4, lifting cylinder pneumatic control valve 6, vibrator extension cylinder pneumatic control valve 7, valve opening cylinder pneumatic control valve 8, and vibration pneumatic control valve 9.

[0062] The clamping cylinder pneumatic control valve 4 is preferably a two-position five-way dual pneumatic control valve, with execution positions A and B, which respectively control the opening and clamping of the clamping cylinder 221. In this embodiment, there are two clamping blocks, therefore there are two clamping cylinders, and the clamping cylinder pneumatic control valve can control both clamping cylinders simultaneously.

[0063] A one-way valve is preferably installed between position A of the clamping cylinder pneumatic control valve and position B of the mechanical switch valve.

[0064] The preferred pneumatic control valve for the lifting cylinder is a two-position five-way single pneumatic control time-delay valve, which has execution positions A and B, respectively controlling the lowering and lifting actions of the lifting cylinder.

[0065] The pneumatic control valve for the vibrator extension cylinder is preferably a two-position five-way single-pneumatic delay valve, with execution positions A and B, which respectively control the retraction and extension actions of the vibrator extension cylinder. The delay time of the vibrator extension cylinder pneumatic control valve and the lifting cylinder pneumatic control valve can be the same or different, depending on the specific needs. In this embodiment, they are preferably the same, with a delay of 6 to 7 seconds compared to the clamping cylinder pneumatic control valve.

[0066] The pneumatic control valve 8 for the valve opening cylinder is preferably a two-position five-way dual pneumatic control valve, which has execution positions A and B, respectively controlling the opening and closing actions of the valve opening cylinder.

[0067] Furthermore, a throttle valve 8-1 is installed on the push-out air path connecting position A of the opening cylinder pneumatic control valve and position B of the vibrator extension cylinder; a one-way valve 8-2 is installed between position A of the opening cylinder pneumatic control valve and position A of the mechanical switch valve.

[0068] The preferred vibratory pneumatic control valve is a two-position three-way single pneumatic control valve with an actuation position A, used to control the vibration of the vibrator.

[0069] I. Connection

[0070] The feeding vehicle is moved to the docking station, and the feeding vehicle is docked with the docking station. The docking method of the pneumatic control box includes the following steps.

[0071] 1A. Mechanically switch the mechanical switch valve to docking station A.

[0072] 1B. Clamping Block Clamping: Position A of the mechanical switch valve is directly connected to position B of the clamping cylinder pneumatic control valve. Therefore, position B of the clamping cylinder pneumatic control valve is directly connected. At this time, the two clamping cylinders perform clamping actions simultaneously, driving the two clamping blocks to clamp and achieve engagement with the two docking slots, thus fixing the position of the feeding cart.

[0073] 1C. Discharge port docking: Position B of the lifting cylinder pneumatic control valve is connected to the clamping air circuit of the clamping cylinder. The lifting cylinder pneumatic control valve is a time delay valve. By controlling the delay time t1, after the clamping cylinder clamps for a time t1, position B of the lifting cylinder pneumatic control valve is turned on, and the lifting cylinder drives the docking ring to rise in height and dock with the discharge port located above, which facilitates the guidance of material discharge.

[0074] 1D. Vibrator Extension: Position B of the vibrator extension cylinder pneumatic control valve is connected to the clamping air circuit of the clamping cylinder. The vibrator extension cylinder pneumatic control valve is a time-delay valve. By controlling the delay time t2, after a time t2 following clamping by the clamping cylinder, position B of the vibrator extension cylinder pneumatic control valve is activated, driving the vibrator extension cylinder to extend, bringing the vibrator close to or in contact with the discharge side wall of the hopper. In this embodiment, the delay time t1 ≤ t2. When both are the same, steps 1C and 1D can be performed simultaneously.

[0075] 1E, Open the valve

[0076] The valve opening cylinder pneumatic control valve is dual pneumatically controlled, and the setting of the second check valve ensures that when the mechanical switch valve is in docking position A, the mechanical switch valve A position is not directly connected to the valve opening cylinder pneumatic control valve A position.

[0077] The A position of the opening cylinder pneumatic control valve is connected to the push-out air path of the vibrator extension cylinder B position, and the connection is made according to the air pressure of the vibrator extension cylinder. After the vibrator extension cylinder extends to the position, it begins to hold air. When the air pressure is greater than the opening pressure of the valve stem at position A in the opening cylinder pneumatic control valve, position A of the opening cylinder pneumatic control valve is connected. At this time, the opening cylinder drives the clamping jaws of the discharge valve to rotate, so that the discharge valve opens and the material is fed to the docking point.

[0078] 1F. Vibration: Position A of the vibrating air control valve is connected to the opening air path of position A of the valve opening cylinder. The connection is made according to the air pressure of the valve opening cylinder. After the valve opening cylinder is fully opened, it begins to hold air. When the air pressure is greater than the opening pressure of position A of the vibrating air control valve, position A of the vibrating air control valve is connected. At this time, the vibrator vibrates, shaking the discharge side wall of the hopper to prevent powder blockage and ensure smooth discharge.

[0079] As can be seen from the above docking process, the entire docking process only requires a one-button mechanical operation switch of the mechanical switch valve at docking station A. No electrical control is required to achieve automatic docking of the entire docking process from step 1B to step 1F, which is convenient to operate.

[0080] II. De-interlocking

[0081] After the material is used at the material feeding point, the disassembly and reconnection method of the pneumatic control box includes the following steps.

[0082] 2A. Switch the mechanical switch valve to the disconnect position B.

[0083] 2B. Discharge valve closed: The B position of the pneumatic control valve of the valve opening cylinder is directly connected to the disconnect position B of the mechanical switch valve; at this time, the valve opening cylinder drives the discharge valve opening gripper to rotate in the reverse direction, so that the discharge valve is closed and the material supply at the docking point is stopped.

[0084] 2C. Stop Vibration: Since the vibrating air control valve is a single air control valve, and its position A is connected to the opening air path of the valve opening cylinder position A, when the valve opening cylinder drives the discharge valve to close, the opening air path of the valve opening cylinder position A begins to depressurize. Therefore, the valve stem of the vibrating air control valve position A will gradually close, and the vibrator will gradually stop vibrating.

[0085] 2D. Clamping block release: Due to the setting of the disconnection delay air control valve, after a delay time t after the closing air path of the opening cylinder B position is opened, the clamping cylinder air control valve A position is delayed and opened, the clamping cylinder release air path is opened, the clamping cylinder drives the two clamping blocks to release, and release the position fixation of the feeding car.

[0086] 2E. Discharge port disconnection and vibrator retraction: Since both the lifting cylinder pneumatic control valve and the vibrator extension cylinder pneumatic control valve are single pneumatic control valves, and both the B position of the lifting cylinder pneumatic control valve and the B position of the vibrator extension cylinder pneumatic control valve are connected to the clamping air circuit of the clamping cylinder; therefore, at the same time as the clamping cylinder's release air circuit is opened, the clamping air circuit of the clamping cylinder begins to depressurize. Consequently, the valve stems of the B positions of the lifting cylinder pneumatic control valve and the vibrator extension cylinder pneumatic control valve gradually begin to close, the lifting cylinder begins to gradually descend, disconnecting the discharge port; the vibrator extension cylinder gradually retracts, moving away from the hopper.

[0087] At this point, the feeding vehicle can be freely removed from the docking station, thus achieving undocking.

[0088] As can be seen from the above undocking process, the entire undocking process only requires a one-button mechanical operation switch to disconnect station B of the mechanical switch valve, without the need for electrical control, to realize the automatic undocking of the entire docking process from step 2B to step 2E.

[0089] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A pneumatic control box for a powder hopper docking station, characterized by: The gas source, the mechanical switch valve and five gas control valves are included, wherein the gas source supplies gas for each gas control valve; The five gas control valves are respectively a clamping cylinder gas control valve, a jacking cylinder gas control valve, a vibrator extension cylinder gas control valve, an opening valve cylinder gas control valve and a vibration gas control valve; The clamping cylinder gas control valve has execution stations A and B, which respectively control the loosening and clamping of the clamping cylinder; The jacking cylinder gas control valve has execution stations A and B, which respectively control the lowering and jacking actions of the jacking cylinder, and is a delay valve; The vibrator extension cylinder gas control valve has execution stations A and B, which respectively control the retraction and pushing out actions of the vibrator extension cylinder, and is a delay valve; The opening valve cylinder gas control valve has execution stations A and B, which respectively control the opening and closing actions of the opening valve cylinder; The vibration gas control valve has an execution station A for controlling the vibration of the vibrator; The mechanical switch valve has a docking station A and a disconnecting station B; When the mechanical switch valve is in the docking station A, the B station of the clamping cylinder gas control valve is directly conducted; the B stations of the jacking cylinder gas control valve and the vibrator extension cylinder gas control valve are connected with the clamping air path of the clamping cylinder, and are delay conducted; the A station of the opening valve cylinder gas control valve is communicated with the pushing out air path of the B station of the vibrator extension cylinder; the A station of the vibration gas control valve is communicated with the opening air path of the A station of the opening valve cylinder; 2. The air control box for a powder hopper docking station of claim 1, wherein: When the mechanical switch valve is in the disconnecting station B, the B station of the opening valve cylinder gas control valve is directly conducted; the A station of the clamping cylinder gas control valve is connected with the closing air path of the B station of the opening valve cylinder through the disconnecting delay gas control valve, and is delay conducted.

3. The gas control box for powder hopper docking station according to claim 2, characterized in that: The clamping cylinder gas control valve and the opening valve cylinder gas control valve are both two-position five-way double gas control valves.

4. The gas control box for a powder hopper docking station of claim 2, wherein: The disconnecting delay gas control valve is a two-position five-way single gas control delay valve, and a throttle valve one is arranged on the connecting air path between the disconnecting delay gas control valve and the A station of the clamping cylinder gas control valve.

5. The air control box for a powder hopper docking station of claim 1, wherein: A throttle valve two is further arranged on the pushing out air path connected between the A station of the opening valve cylinder gas control valve and the B station of the vibrator extension cylinder.

6. The air control box for a powder hopper docking station of claim 1, wherein: The jacking cylinder gas control valve and the vibrator extension cylinder gas control valve are both two-position five-way single gas control delay valves.

7. The gas control box for a powder hopper docking station of claim 2, wherein: The vibration gas control valve is a two-position three-way single gas control valve.

8. The gas control box for a powder hopper docking station of claim 2, wherein: A one-way valve one is arranged between the A station of the clamping cylinder gas control valve and the disconnecting station B of the mechanical switch valve.

9. The air control box for a powder hopper docking station of claim 1, wherein: A one-way valve two is arranged between the A station of the opening valve cylinder gas control valve and the docking station A of the mechanical switch valve.

10. The pneumatic control box for powder hopper docking station of claim 1, wherein: The mechanical switch valve is a two-position four-way valve. The gas source is 6 Kg air.

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