Hydraulic extrusion sealed feeding device

Abstract

A hydraulic extrusion sealed feeding device relates to the technical field of biomass raw material conveying equipment and is characterized in that a hydraulic cylinder is mounted at one end, far away from a blanking pipe, of a conveying pipe, a piston is mounted at the telescopic end of the hydraulic cylinder, and the piston is positioned in the conveying pipe and corresponds to a feeding port of the conveying pipe; according to the hydraulic material extruding and sealing feeding device, hydraulic driving is adopted, an in-pipe sealing material plug can be formed by extruding raw materials, the hydraulic material extruding and sealing feeding device has the advantages of being tight in sealing, high in reliability and high in safety, biomass raw materials are extruded into a dense material column in a pipe, gas is not prone to passing through the material column, the situation that the gas enters or leaks is avoided, and the service life of the biomass raw materials is prolonged. The gas spring and the sealing disc are arranged at the discharging port of the conveying pipe, so that sealing in the feeding intermittent period is facilitated, good sealing can be achieved in the feeding process and the feeding intermittent period, the material extruding force is far larger than the pneumatic force, clamping stagnation is prevented in the feeding process, and the reliability of the feeding system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass raw material conveying equipment, in particular to a hydraulic extrusion sealing feeding device. Background Art

[0002] Traditional carbonization furnaces are mostly fed with double gate valves. The characteristic of this feeding process is that the double gate valves are opened alternately to drop the raw materials into the carbonization furnace step by step. Although continuous production can be achieved, some air will still enter the carbonization furnace, which will reduce the carbonization quality to a certain extent. In addition, when the carbonization furnace is under positive pressure, pyrolysis gas will overflow from the gate valve, which is not conducive to environmental protection. Gate valves are mostly pneumatic valves. During long-term use, tar, dust, and raw material debris are easily accumulated in the track, resulting in large resistance to the gate operation and insufficient cylinder power, resulting in jamming. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model discloses a hydraulic extrusion sealing feeding device. The utility model adopts hydraulic drive, and can realize the formation of a sealing material plug in the tube by squeezing the raw materials. It has the advantages of tight sealing, high reliability and high safety. The biomass raw materials are squeezed into a dense material column in the tube, and gas is not easy to pass through the material column, thereby avoiding gas entry or leakage. The discharge port of the feed pipe is provided with a gas spring and a sealing disk, which helps to seal during the feeding interval, thereby achieving good sealing during the feeding and feeding interval. The extrusion force is much greater than the pneumatic force, which prevents jamming during feeding and ensures the reliability of the feeding system.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0005] A hydraulic extrusion sealing feeding device includes a feeding pipe, and the feeding and discharging ends of the feeding pipe are respectively connected to the hopper and the dropping pipe. A hydraulic cylinder is installed on the end of the feeding pipe away from the dropping pipe, and a piston is installed on the telescopic end of the hydraulic cylinder. The piston is located in the feeding pipe and corresponds to the feeding port of the feeding pipe. A gas spring is installed on the side of the dropping pipe away from the feeding pipe, and the telescopic end of the gas spring corresponds to and is in contact with the discharge end of the feeding pipe.

[0006] A sealing disk is installed on the discharge port of the delivery pipe located in the drop pipe, and the sealing disk corresponds to and is in contact with the telescopic end of the gas spring.

[0007] The length of the piston is greater than the length of the feed opening of the feed pipe, and the piston completely covers the feed opening of the feed pipe.

[0008] One end of the drop pipe located on one side of the hopper is in a sealed state.

[0009] The position of the central axis of the hydraulic cylinder coincides with the position of the central axis of the gas spring.

[0010] The telescopic end of the hydraulic cylinder is connected to the middle position of the piston.

[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0012] The hydraulic extrusion sealing feeding device described in the utility model adopts hydraulic drive, and can realize the formation of sealing material plugs in the tube by squeezing raw materials, and has the advantages of tight sealing, high reliability and high safety. The biomass raw materials are squeezed into dense material columns in the tube, and gas is not easy to pass through the material columns, thereby avoiding gas entry or leakage. The discharge port of the feed pipe is provided with a gas spring and a sealing disk, which is helpful for sealing during the feeding interval, thereby achieving good sealing during the feeding and feeding interval. The extrusion force is much greater than the pneumatic force, which prevents jamming during feeding and ensures the reliability of the feeding system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the biomass raw material pushing method of the present utility model;

[0015] Figure 3 This is a schematic diagram of the biomass raw material after pushing the material in the present utility model;

[0016] 1. Hydraulic cylinder; 2. Piston; 3. Hopper; 4. Feed pipe; 5. Sealing disk; 6. Gas spring; 7. Feed pipe; 8. Biomass raw material. DETAILED DESCRIPTION

[0017] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0018] Combined with attachment Figures 1-3 The hydraulic extrusion sealing feeding device includes a feeding pipe 4, and the feeding and discharging ends of the feeding pipe 4 are respectively connected to the hopper 3 and the dropping pipe 7. A hydraulic cylinder 1 is installed on the end of the feeding pipe 4 away from the dropping pipe 7, and a piston 2 is installed on the telescopic end of the hydraulic cylinder 1. The piston 2 is located in the feeding pipe 4 and corresponds to the feeding port of the feeding pipe 4. After the hydraulic cylinder 1 is extended to the maximum extent, the piston 2 will completely block the feeding port of the feeding pipe 4, and at the same time prevent the biomass raw materials from falling between the piston 2 and the hydraulic cylinder 1. A gas spring 6 is installed on the side of the dropping pipe 7 away from the feeding pipe 4, and the telescopic end of the gas spring 6 corresponds to the discharge end of the feeding pipe 4 and is in contact with it.

[0019] The feeding pipe 4 is provided with a sealing disk 5 on the discharge port in the drop pipe 7, and the sealing disk 5 corresponds to and is in contact with the telescopic end of the gas spring 6, which helps to seal during the feeding interval, thereby achieving good sealing during feeding and during the feeding interval.

[0020] The length of the piston 2 is greater than the length of the feed port of the feed pipe 4, and the piston 2 completely covers the feed port of the feed pipe 4, which is conducive to the piston 2 closing the feed port of the feed pipe 4 to prevent external gas from entering or discharging.

[0021] One end of the drop pipe 7 located on one side of the hopper 3 is in a sealed state.

[0022] The position of the central axis of the hydraulic cylinder 1 coincides with the position of the central axis of the gas spring 6 .

[0023] The telescopic end of the hydraulic cylinder 1 is connected to the middle position of the piston 2.

[0024] The hydraulic extrusion sealing feeding device is described. When in use, the biomass raw material is conveyed to the feeding pipe 4 through the hopper 3, and the piston 2 is driven to move by the hydraulic cylinder 1. The biomass raw material is driven to move by the piston 2, and the biomass raw material is limited by the gas spring 6, so that the biomass raw material forms a dense material column after reaching a certain level in the feeding pipe 4. The gas is not easy to pass through the material column, thereby avoiding the entry or leakage of gas. During the process of continued pushing of the piston 2, the material column will push the telescopic end of the gas spring 6, so that the biomass raw material gradually falls into the drop pipe 7. After the biomass raw material is completely pushed out, the telescopic end of the gas spring 6 will reset and contact with the sealing disk 5 on the feeding pipe 4 to seal the feeding pipe 4, thereby preventing the pyrolysis gas in the carbonization furnace from being discharged into the air.

[0025] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and ways to implement the technical solution. The above is only a preferred implementation scheme of the present invention. However, technical personnel in the relevant field should understand that various changes can be made to the form and details of the present invention without departing from the spirit and scope of the present invention as defined by the attached claims, and all of them are within the scope of protection of the present invention.

Claims

1. A hydraulic extrusion sealing feeding device, comprising a feeding pipe (4), wherein the feeding and discharging ends of the feeding pipe (4) are respectively connected to a hopper (3) and a drop pipe (7), wherein the device is characterized by: A hydraulic cylinder (1) is installed on one end of the delivery pipe (4) away from the drop pipe (7), and a piston (2) is installed on the telescopic end of the hydraulic cylinder (1). The piston (2) is located in the delivery pipe (4) and corresponds to the feed port of the delivery pipe (4). A gas spring (6) is installed on one side of the drop pipe (7) away from the delivery pipe (4), and the telescopic end of the gas spring (6) corresponds to and is in contact with the discharge end of the delivery pipe (4).

2. The hydraulic extrusion sealing feeding device according to claim 1 is characterized in that: A sealing disc (5) is installed on the discharge port of the feeding pipe (4) located in the drop pipe (7), and the sealing disc (5) corresponds to and is in contact with the telescopic end of the gas spring (6).

3. The hydraulic extrusion sealing feeding device according to claim 1 is characterized in that: The length of the piston (2) is greater than the length of the feed opening of the feed pipe (4), and the piston (2) completely covers the feed opening of the feed pipe (4).

4. The hydraulic extrusion sealing feeding device according to claim 1 is characterized in that: One end of the drop pipe (7) located on one side of the hopper (3) is in a sealed state.

5. The hydraulic extrusion sealing feeding device according to claim 1 is characterized in that: The position of the central axis of the hydraulic cylinder (1) coincides with the position of the central axis of the gas spring (6).

6. The hydraulic extrusion sealing feeding device according to claim 1, characterized in that: The telescopic end of the hydraulic cylinder (1) is connected to the middle position of the piston (2).

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