Grid type sand heating hopper

Abstract

The utility model discloses a grating type sand heating hopper which comprises a sand hopper, heating plates are vertically arranged in the sand hopper at equal intervals, the heating plates are fixed on the sand hopper through a heating plate mounting frame, a connecting flange is arranged at the upper end of the sand hopper, the connecting flange is used for connecting a daily consumption hopper, the lower part of the sand hopper is narrowed and is provided with a sand discharging port, and a pneumatic butterfly valve is mounted at the sand discharging port. The plate-type sand heating hopper is compact in structure, high in practicability, high in heat efficiency, small in size and convenient to install, multiple plate-type sand heating hoppers can be assembled according to the production use amount, the connecting mode is changed, and the requirements of different devices can be met. And if one heating plate is damaged in the production process, overall heating is not affected, the heating plate can be replaced when production is stopped, long-time shutdown is avoided, and the operation risk can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting sand buckets, in particular to a grid type sand heating bucket. Background Art

[0002] The raw sand temperature is very important in the foundry field. Too low sand temperature will cause serious quality defects. The online sand heating bucket sold on the market takes up a lot of space and cannot meet the compact requirements of equipment design. The thermal efficiency is low and cannot meet the production capacity of more than 8 tons of sand / hour. The failure rate is high, please refer to Figure 4 Take the boiling air heating bucket as an example. The boiling air heating bucket is a product of the Spanish company Rolamendi. The principle of this product is to use the vacuum pump to output compressed air. The compressed air passes through the heater fins and becomes hot air. The hot air directly enters the sand bucket through the pipeline. The hot air boils the sand in the sand bucket and achieves the purpose of heating the sand. The excess air is then exhausted through the middle guide exhaust pipe. In actual use, the sand in the daily consumption bucket is delivered by pneumatic conveying. The pressure of pneumatic conveying is 3-4bar, and the pressure of the vacuum pump is 8-10pa. The pressure of pneumatic conveying sand is greater than the pressure of the vacuum pump. In this case, the sand often flows back into the vacuum pump, causing damage to the vacuum pump and causing equipment shutdown. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a grid-type sand heating bucket with compact structure, simple manufacture, high thermal efficiency, low failure rate and low maintenance cost.

[0004] The utility model adopts the following technical solution to solve the above-mentioned problems: a grid-type sand heating bucket, comprising a sand bucket, in which heating plates are arranged vertically and equidistantly, the heating plates are fixed on the sand bucket through a heating plate mounting frame, a connecting flange is arranged at the upper end of the sand bucket, the connecting flange is used to connect to a daily consumption bucket, the lower part of the sand bucket is narrowed to provide a sand lowering port, and a pneumatic butterfly valve is installed at the sand lowering port.

[0005] Furthermore, a manual gate valve is installed at the lower sand port, and the manual gate valve is installed above the pneumatic butterfly valve.

[0006] Furthermore, it comprises a terminal box, which is electrically connected to the heating plate.

[0007] Furthermore, the heating plate mounting frame is a U-shaped groove rod, and U-shaped groove rods are respectively arranged on the upper and lower sides of the heating plate in the sand bucket, and the heating plate is plugged into the U-shaped groove rod.

[0008] Furthermore, the heating plate is square, the sand hopper is designed to follow the shape, and one side plate of the sand hopper vertically connected to the heating plate is a detachable inspection plate.

[0009] Furthermore, there are two sizes of heating plates, one of which is located on both sides of the upper part of the sand bucket, and the other is located in the middle of the sand bucket, and its lower end is extended into the lower part of the sand bucket.

[0010] The utility model has the following beneficial effects:

[0011] 1. Compact structure and high practicality. The plate-type sand heating bucket has high thermal efficiency, small size and easy installation. It can be assembled in multiple units according to production usage and the connection method can be changed to meet the requirements of different equipment.

[0012] 2. Easy maintenance, saving time and effort. If a heating plate is damaged during the production process, it will not affect the overall heating. When production is stopped, it can be replaced without long-term downtime, which can reduce operational risks.

[0013] 3. Save costs and be reliable to use. The plate-type sand heating bucket is made of steel parts processed and welded. It can be processed and manufactured using a shearing machine, a drilling machine, and a welding machine. A heating plate heating element is used inside. The annual maintenance cost is approximately 300 to 600 yuan, which is extremely low. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the utility model;

[0015] Figure 2 yes Figure 1 Middle AA section view;

[0016] Figure 3 It is a top view of the utility model;

[0017] Figure 4 It is a cross-sectional view of a boiling type air-heating heater.

[0018] In the figure: 1-sand inlet; 2-connecting flange; 3-heating plate; 4-terminal box; 5-sand hopper; 6-manual gate valve; 7-pneumatic butterfly valve; 8-sand outlet; 9-inspection port flange; 10-heating plate mounting bracket; 11-butterfly valve mounting flange; 12, inspection plate. DETAILED DESCRIPTION

[0019] In order to better understand the purpose, structure and function of the utility model, a grid-type sand heating bucket of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 1~Figure 3As shown, a grid-type sand heating bucket comprises a sand bucket 5, in which heating plates 3 are arranged vertically and equidistantly, and the heating plates 3 are fixed on the sand bucket 5 through a heating plate mounting frame 10, and the upper end of the sand bucket 5 is a sand inlet 1, and is provided with a connecting flange 2 for connecting to a daily consumption bucket, and the lower part of the sand bucket 5 is narrowed to provide a lower sand opening 8, and a manual gate valve 6 is installed at the lower sand opening 8, and a butterfly valve mounting flange 11 is provided below the manual gate valve 6, and a pneumatic butterfly valve 7 is installed on the butterfly valve mounting flange 11.

[0021] In this embodiment, the heating plate 3 is square, the sand bucket 5 is designed in the same shape, the heating plate mounting frame 10 is a U-shaped groove rod, the sand bucket 5 is respectively provided with U-shaped groove rods on the upper and lower sides of the heating plate 3, and the heating plate 3 is inserted into the U-shaped groove rod.

[0022] There are two sizes of heating plates 3, one with a lower height is on both sides of the upper part of the sand hopper 5, and the other with a higher height is in the middle of the sand hopper 5 and can be extended into the lower part of the sand hopper 5. The side plate of the vertical heating plate 3 of the sand hopper 5 is a detachable inspection plate 12, and specifically, the inspection plate 12 is connected to the sand hopper 5 body through an inspection port flange 9. A terminal box 4 is set on the side of the sand hopper 5, and the terminal box 4 is electrically connected to the heating plate 3.

[0023] The grid-type sand heating bucket of this embodiment adopts an integrated design to make the overall structure compact, and the heating plate 3 is combined into a heating unit. The heating element of this heating bucket is a grid plate heating element, with small grid gaps and high thermal efficiency. The sand is heated and kept warm in the grid gaps. The plate-type sand heating bucket has a power of 55.2KW / set, and the sand heating is maintained at about 30°C. The sand heating capacity is 7T sand / hour. If one set cannot meet the production efficiency requirements, two sets can be installed, which can reach 14T sand / hour.

[0024] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A grid-type sand heating bucket, characterized in that: The invention comprises a sand hopper (5), wherein heating plates (3) are arranged vertically and equidistantly in the sand hopper (5), and the heating plates (3) are fixed to the sand hopper (5) through a heating plate mounting frame (10). A connecting flange (2) is arranged at the upper end of the sand hopper (5), and the connecting flange (2) is used to connect to a daily consumption hopper. The lower part of the sand hopper (5) is narrowed to be provided with a lower sand opening (8), and a pneumatic butterfly valve (7) is installed at the lower sand opening (8).

2. The grid-type sand heating bucket according to claim 1, characterized in that: A manual gate valve (6) is installed at the lower sand port (8), and the manual gate valve (6) is installed above the pneumatic butterfly valve (7).

3. The grid-type sand heating bucket according to claim 1, characterized in that: It comprises a terminal box (4), and the terminal box (4) is electrically connected to the heating plate (3).

4. The grid-type sand heating bucket according to claim 1, characterized in that: The heating plate mounting frame (10) is a U-shaped groove rod, and U-shaped groove rods are respectively arranged on the upper and lower sides of the heating plate (3) in the sand bucket (5), and the heating plate (3) is plugged into the U-shaped groove rod.

5. The grid-type sand heating bucket according to claim 4 is characterized in that: The heating plate (3) is square, and the sand bucket (5) is designed to follow the shape. One side plate of the sand bucket (5) vertical to the heating plate (3) is a detachable inspection plate (12).

6. The grid-type sand heating bucket according to claim 5, characterized in that: There are two sizes of heating plates (3), one of which is located on both sides of the upper part of the sand bucket (5), and the other is located in the middle of the sand bucket (5), and its lower end extends into the lower part of the sand bucket (5).

Images