Double-channel chute device and cleaning method

Abstract

The invention discloses a double-channel chute device and a cleaning method, the device comprises a stock bin and a control assembly, two chutes are arranged below the stock bin, an inlet of each chute is provided with a first gate valve, an outlet of each chute is provided with a second gate valve, a filter screen, a pressure difference transmitter and a flushing pipeline are arranged in each chute, a flushing valve is arranged on each flushing pipeline, and the control assembly is connected with the control assembly. The two ends of the pressure difference transmitter are located on the two sides of the filter screen respectively, and the control assembly is connected with the pressure difference transmitter, the first gate valve, the second gate valve and the flush valve and used for controlling opening and closing of the first gate valve, the second gate valve and the flush valve according to the pressure difference of the two sides of the filter screen. The double-channel chute device and the cleaning method have the advantages that the reliability is high, the flushing frequency can be accurately controlled, and the operation efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of material conveying equipment, and in particular to a dual-channel chute device and a cleaning method. Background Art

[0002] Chutes are widely used in industrial production, particularly in situations where impurities need to be filtered. Currently, most chutes utilize a single-channel design. Once clogged, the system must be shut down for repair, impacting continuous production. Furthermore, the filters within the chutes are typically fixed, requiring equipment shutdown and disassembly for cleaning, making cleaning inconvenient, time-consuming, and labor-intensive. Furthermore, most existing chutes lack flushing functions or have incomplete flushing mechanisms. Existing flushing systems are often timed or manually controlled, unable to precisely adjust to the actual level of clogs, resulting in wasted water resources.

[0003] Chinese patent publication CN217675635U discloses a device for switching the flow direction of finished product materials in a vibrating screen. The device comprises a dual-channel chute located at the screen's discharge port. A tiltable material-guiding divider plate is slidably connected to the inlet of the dual-channel chute via a drive component. The divider plate switches the flow direction of finished product materials within the vibrating screen between the two channels of the dual-channel chute. However, this technical solution requires manual cleaning when the chute becomes clogged, making cleaning inconvenient. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a dual-channel chute device with high reliability, precise control of flushing frequency and high operating efficiency.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A dual-channel chute device includes a silo and a control component. Two chutes are provided below the silo. The inlet of the chute is provided with a first gate valve, and the outlet is provided with a second gate valve. A filter, a differential pressure transmitter and a flushing pipe are provided in the chute. The flushing pipe is provided with a flushing valve. The two ends of the differential pressure transmitter are respectively located on both sides of the filter. The control component is connected to the differential pressure transmitter, the first gate valve, the second gate valve and the flushing valve, and is used to control the opening and closing of the first gate valve, the second gate valve and the flushing valve according to the pressure difference on both sides of the filter.

[0006] As a further improvement of the above technical solution: A screw conveyor is provided in the silo, and the control component is connected to the screw conveyor.

[0007] The two chutes are arranged along the axial direction of the screw conveyor.

[0008] The lower part of the silo is funnel-shaped and docked with the two chutes.

[0009] The two chutes are arranged closely.

[0010] The filter is a drawer-type filter.

[0011] A manual valve is also provided upstream of the flush valve.

[0012] A method for cleaning a dual-channel chute device comprises the following steps: Step S1: The first gate valve and the second gate valve of one chute are opened for use, and the first gate valve and the second gate valve of another chute are closed for standby use; Step S2: The material in the silo falls into the chute, is filtered through the filter screen of the chute, and then is transported; Step S3: When the pressure of the differential pressure transmitter of the chute in use reaches a first set value, the control component controls the flushing valve to open, and the flushing pipe flushes the filter screen; Step S4: After the flushing set time, determine whether the pressure of the differential pressure transmitter drops to the second set value. If yes, proceed to step S5; if not, proceed to step S6; Step S5: The control component controls the flushing valve to close and continue to transport the material; Step S6: The control component controls the first and second gate valves of the chute in use to be closed for standby, and the first and second gate valves of the other chute to be opened for use; Step S7: The material in the silo falls into another chute, is filtered through the filter screen of the other chute, and is then transported.

[0013] As a further improvement of the above technical solution: Specifically, step S2 includes: the material in the silo is conveyed by a screw conveyor, then falls into a chute, and is filtered by a filter screen in the chute before being conveyed; Specifically, step S7 is as follows: the control component controls the switching of the conveying direction of the screw conveyor, and the material in the silo is conveyed by the screw conveyor, and then falls into another chute, and is conveyed after being filtered by the filter screen of the other chute.

[0014] After step S7, the method further includes the following steps: Step S8: Remove the filter screen from the standby chute, clean it, and replace it.

[0015] Compared with the prior art, the advantages of the present invention are: 1. The dual-channel chute device of the present invention independently transports materials by setting up two chutes, with a dual-channel redundant design and high reliability. By setting up a differential pressure transmitter, the pressure difference on both sides of the filter can be monitored in real time, flushing can be triggered on demand, and the flushing frequency can be accurately controlled to avoid excessive wear of the filter, extend the life of the device, reduce manual maintenance costs and water resource consumption, and save costs. In addition, in conjunction with the differential pressure interlock control logic of the control component, the standby chute can be automatically switched according to the flushing effect of the filter, reducing manual intervention, shortening downtime, and achieving high operating efficiency.

[0016] 2. In the dual-channel chute device of the present invention, since the two chutes are arranged along the axial direction of the screw conveyor, the material in the silo can be controlled to be conveyed to the chute in use by switching the rotation conveying direction of the screw conveyor, which can prevent the material from accumulating in the spare chute and ensure orderly material transportation.

[0017] 3. The cleaning method of the dual-channel chute device of the present invention monitors the pressure difference on both sides of the filter in real time through a differential pressure transmitter, and the control component controls it. It can trigger flushing on demand and accurately control the flushing frequency, avoid excessive wear of the filter, extend the life of the device, reduce manual maintenance costs and water resource consumption, and save costs; and in conjunction with the differential pressure interlock control logic of the control component, it can automatically switch to the standby chute according to the flushing effect of the filter, reduce manual intervention, shorten downtime, and have high operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the dual-channel chute device of the present invention.

[0019] Figure 2 It is a side view of the dual-channel chute device of the present invention.

[0020] Figure 3 This is an axonometric view of the chute in the dual-channel chute device of the present invention.

[0021] Figure 4 This is an axonometric view of the filter screen in the dual-channel chute device of the present invention.

[0022] Figure 5 The figure is a flow chart of the cleaning method of the dual-channel chute device of the present invention.

[0023] Legend: 1. Silo; 2. Chute; 21. First gate valve; 22. Second gate valve; 3. Filter; 4. Differential pressure transmitter; 5. Flushing pipe; 51. Flushing valve; 52. Manual valve; 6. Screw conveyor. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0027] In the present invention, unless otherwise expressly specified or limited, terms such as "assemble," "connect," "connect," and "fix" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0028] Example 1: like Figures 1 to 4 As shown, the dual-channel chute device of this embodiment includes a silo 1 and a control component. Two chutes 2 are provided below the silo 1. The inlet of the chute 2 is provided with a first gate valve 21, and the outlet is provided with a second gate valve 22. A filter 3, a differential pressure transmitter 4 and a flushing pipe 5 are provided in the chute 2. A flushing valve 51 is provided on the flushing pipe 5. The two ends of the differential pressure transmitter 4 are respectively located on both sides of the filter 3. The control component is connected to the differential pressure transmitter 4, the first gate valve 21, the second gate valve 22 and the flushing valve 51, and is used to control the opening and closing of the first gate valve 21, the second gate valve 22 and the flushing valve 51 according to the pressure difference on both sides of the filter 3.

[0029] In the dual-channel chute device of this embodiment, during operation, the first and second gate valves 21 and 22 of one chute 2 are opened for use, while the first and second gate valves 21 and 22 of the other chute 2 are closed for standby use. Material in the silo 1 falls into the chute 2 under the action of gravity, is filtered through the filter 3 of the chute 2, and is then conveyed. When the pressure of the differential pressure transmitter 4 of the chute 2 in use reaches a first set value, the control component (not shown) controls the flushing valve 51 to open, flushing the filter 3 through the flushing pipe 5. After the set flushing time, it is determined whether the pressure of the differential pressure transmitter 4 has dropped to a second set value. If so, the control component controls the flushing valve 51 to close, continuing to convey the material. If not, the control component controls the first and second gate valves 21 and 22 of the chute 2 in use to close for standby use, while the first and second gate valves 21 and 22 of the other chute 2 are opened for use. Material in the silo 1 falls into the other chute 2, is filtered through the filter 3 of the other chute 2, and is then conveyed. The set time, the first set value and the second set value can be set according to actual production needs.

[0030] The dual-channel chute device of this embodiment has two chutes 2 for independent material transportation, a dual-channel redundant design, and high reliability; by providing a differential pressure transmitter 4, the pressure difference on both sides of the filter 3 can be monitored in real time, flushing can be triggered on demand, and the flushing frequency can be accurately controlled to avoid excessive wear of the filter 3, extend the life of the device, reduce manual maintenance costs and water resource consumption, and save costs; and in conjunction with the differential pressure interlock control logic of the control component, the standby chute 2 can be automatically switched according to the flushing effect of the filter 3, reducing manual intervention, shortening downtime, and achieving high operating efficiency.

[0031] Preferably, in this embodiment, in addition to controlling the opening and closing of the flushing valve 51 according to the pressure difference on both sides of the filter 3, the control component also has a timed flushing function. The control component can control the flushing valve 51 to open and close regularly to flush the filter 3 regularly, and the flushing effect is better. However, since the water consumption will increase after the timed flushing, the user can choose whether to turn on the flushing function according to actual needs, and it has strong adaptability.

[0032] Furthermore, in this embodiment, a screw conveyor 6 is provided in the silo 1, and the control assembly is connected to the screw conveyor 6. The material in the silo 1 is conveyed by the screw conveyor 6, which can prevent the material from being blocked in the silo 1 and ensure smooth material transportation.

[0033] Furthermore, in this embodiment, the two chutes 2 are arranged along the axis of the screw conveyor 6. Since the two chutes 2 are arranged along the axis of the screw conveyor 6, the material in the silo 1 can be controlled to be conveyed to the active chute 2 by switching the rotation direction of the screw conveyor 6, which can prevent the accumulation of material in the standby chute 2 and ensure orderly material transportation.

[0034] Furthermore, in this embodiment, the lower portion of the silo 1 is funnel-shaped and docks with the two chutes 2. The material in the silo 1 is conveyed to one end of the screw conveyor 6 by the screw conveyor 6, then passes through the lower portion of the funnel-shaped silo 1 and slides down into the chutes 2, resulting in a simple and reliable structure.

[0035] Furthermore, in this embodiment, the two chutes 2 are closely arranged with no gap left between them, so that the materials will not accumulate at the top of the chutes 2, and the materials can all enter the chutes 2 smoothly, resulting in a good conveying effect.

[0036] Furthermore, in this embodiment, the filter screen 3 is a drawer-type filter screen. The filter screen 3 adopts a structure design that can be quickly pulled out to reduce the difficulty of maintenance.

[0037] Furthermore, in this embodiment, a manual valve 52 is further provided upstream of the flushing valve 51. By closing the manual valve 52, the flushing valve 51 can be inspected or maintained, and the structure is reasonable.

[0038] Example 2: like Figure 5 As shown, the cleaning method of the dual-channel chute device of this embodiment includes the following steps: Step S1: The first gate valve 21 and the second gate valve 22 of one chute 2 are opened for use, and the first gate valve 21 and the second gate valve 22 of the other chute 2 are closed for standby use; Step S2: The material in the silo 1 falls into the chute 2, is filtered by the filter 3 of the chute 2, and is then transported. Step S3: When the pressure of the differential pressure transmitter 4 of the chute 2 in use reaches a first set value, the control component controls the flushing valve 51 to open, and the flushing pipe 5 flushes the filter 3; Step S4: After the flushing set time, determine whether the pressure of the differential pressure transmitter 4 is reduced to the second set value. If yes, proceed to step S5; if not, proceed to step S6; Step S5: The control component controls the flushing valve 51 to close and continue to transport the material; Step S6: The control component controls the first gate valve 21 and the second gate valve 22 of the chute 2 in use to be closed for standby, and the first gate valve 21 and the second gate valve 22 of the other chute 2 to be opened for use; Step S7: The material in the silo 1 falls into another chute 2, is filtered by the filter 3 of the other chute 2, and is then transported.

[0039] The cleaning method of the dual-channel chute device of this embodiment monitors the pressure difference on both sides of the filter 3 in real time through the pressure differential transmitter 4, and the control component controls it, which can trigger flushing on demand and accurately control the flushing frequency, thereby avoiding excessive wear of the filter 3, extending the life of the device, reducing manual maintenance costs and water resource consumption, and saving costs; and in conjunction with the differential pressure interlock control logic of the control component, it can automatically switch to the standby chute 2 according to the flushing effect of the filter 3, reducing manual intervention, shortening downtime, and achieving high operating efficiency.

[0040] Furthermore, in this embodiment, step S2 is specifically as follows: the material in the silo 1 is conveyed by the screw conveyor 6, then falls into the chute 2, and is filtered by the filter 3 of the chute 2 before being conveyed. Specifically, step S7 involves the control component controlling the switching of the conveying direction of screw conveyor 6. The material in silo 1 is conveyed by screw conveyor 6 and then falls into another chute 2. After being filtered by filter 3 in the other chute 2, it is conveyed. When switching chute 2, the control component also switches the rotation direction of screw conveyor 6, ensuring orderly material transportation.

[0041] Furthermore, in this embodiment, after step S7, the following step is further included: step S8, removing the filter screen 3 from the standby chute 2, cleaning it, and replacing it. After the filter screen 3 is removed and cleaned or replaced with the standby filter screen 3, the standby state of the chute 2 is restored without stopping the machine, thereby improving operating efficiency.

[0042] The above description is only a preferred embodiment of the present invention and does not constitute any formal limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the spirit and technical solution of the present invention, use the methods and technical contents disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention, still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A dual-channel chute device, characterized in that: The invention comprises a silo (1) and a control assembly, wherein two chutes (2) are provided below the silo (1), a first gate valve (21) is provided at the inlet of the chutes (2), and a second gate valve (22) is provided at the outlet, a filter screen (3), a pressure differential transmitter (4) and a flushing pipe (5) are provided in the chutes (2), a flushing valve (51) is provided on the flushing pipe (5), and two ends of the pressure differential transmitter (4) are respectively located on both sides of the filter screen (3), and the control assembly is connected to the pressure differential transmitter (4), the first gate valve (21), the second gate valve (22) and the flushing valve (51), and is used to control the opening and closing of the first gate valve (21), the second gate valve (22) and the flushing valve (51) according to the pressure difference on both sides of the filter screen (3).

2. The dual-channel chute device according to claim 1, characterized in that: A screw conveyor (6) is provided inside the silo (1), and the control component is connected to the screw conveyor (6).

3. The dual-channel chute device according to claim 2, characterized in that: The two chutes (2) are arranged along the axial direction of the screw conveyor (6).

4. The dual-channel chute device according to claim 1, characterized in that: The lower part of the silo (1) is funnel-shaped and docks with the two chutes (2).

5. The dual-channel chute device according to claim 1, characterized in that: The two chutes (2) are arranged closely together.

6. The dual-channel chute device according to claim 1, characterized in that: The filter (3) is a drawer-type filter.

7. The dual-channel chute device according to claim 1, characterized in that: A manual valve (52) is also provided upstream of the flushing valve (51).

8. A method for cleaning a dual-channel chute device, characterized in that: The following steps are involved: Step S1, the first gate valve (21) and the second gate valve (22) of one chute (2) are opened for use, and the first gate valve (21) and the second gate valve (22) of another chute (2) are closed for standby; Step S2: the material in the silo (1) falls into the chute (2), is filtered by the filter (3) in the chute (2), and is then transported; Step S3: When the pressure of the differential pressure transmitter (4) of the chute (2) in use reaches a first set value, the control component controls the flushing valve (51) to open, and the flushing pipe (5) flushes the filter (3); Step S4: After the flushing set time, determine whether the pressure of the differential pressure transmitter (4) is reduced to the second set value. If so, proceed to step S5; if not, proceed to step S6; Step S5: The control component controls the flushing valve (51) to close and continue to transport the material; Step S6, the control component controls the first gate valve (21) and the second gate valve (22) of the chute (2) in use to be closed for standby, and the first gate valve (21) and the second gate valve (22) of the other chute (2) to be opened for use; Step S7: The material in the silo (1) falls into another chute (2), is filtered by the filter (3) of the other chute (2), and is then transported.

9. The cleaning method of the dual-channel chute device according to claim 8, characterized in that: Specifically, step S2 comprises the following steps: the material in the silo (1) is conveyed by the screw conveyor (6), then falls into the chute (2), and is filtered by the filter (3) of the chute (2) before being conveyed; Specifically, step S7 is as follows: the control component controls the switching of the conveying direction of the screw conveyor (6); the material in the silo (1) is conveyed by the screw conveyor (6), then falls into another chute (2), and is filtered by the filter (3) of the other chute (2) before being conveyed.

10. The cleaning method of the dual-channel chute device according to claim 8, characterized in that: After step S7, the method further includes the following steps: Step S8: extract the filter screen (3) from the standby chute (2), clean it, and replace it.

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