Precoated sand roasting regeneration furnace

Abstract

The utility model discloses a precoated sand roasting regeneration furnace which comprises a heating furnace and a rotary furnace pipe, the rotary furnace pipe is installed in the heating furnace and rotates through a driving motor, the two ends of the rotary furnace pipe penetrate through the two ends of the heating furnace, a roasting chamber is arranged in the rotary furnace pipe, and the roasting chamber is communicated with the heating furnace. A plurality of heat conduction protrusions are arranged on the inner wall of the rotary furnace pipe, protruding reinforcing ribs are arranged on the outer wall of the rotary furnace pipe, one end of the rotary furnace pipe is connected with a feeding hopper, and the other end of the rotary furnace pipe is connected with a discharging hopper. The inner wall of the furnace pipe is in full contact with materials, and heat exchange efficiency is improved; the outer wall of the furnace pipe is provided with the convex reinforcing ribs, so that the structural strength of the furnace pipe is improved, the heating area of the furnace pipe is increased, and the heat exchange efficiency is improved; the rotating structure of the rotary furnace pipe enables the furnace pipe to be heated evenly and heat exchange intensity to be high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of roasting furnace, particularly to the technical field of film-coated sand roasting regenerator. BACKGROUND

[0002] Film-coated sand is a molding sand or core sand with a solid resin film on the surface of sand particles before molding; when regenerating film-coated sand, first, the old sand is vibrated and crushed and magnetically separated, then roasted in a regenerator, and after discharging, it can be reused after heat preservation, cooling and screening.

[0003] The existing horizontal roasting furnace, as shown in CN217715887U, has a stationary furnace tube, and the old sand is transported by the internal screw conveyor, which has the problems of uneven heating and low heat exchange efficiency with the old sand. SUMMARY

[0004] The utility model discloses a film-coated sand roasting regenerator, which can solve the above problems.

[0005] To achieve the above-mentioned purpose, the utility model provides a kind of film-coated sand roasting regenerator, including heating furnace and rotating furnace tube, the heating furnace is resistance heating furnace or electromagnetic induction heating furnace or gas heating furnace, rotating furnace tube is installed in the inside of heating furnace, rotating furnace tube is rotated by drive motor, the both ends of rotating furnace tube are set and the both ends of heating furnace are penetrated, the inner wall of rotating furnace tube is equipped with helical blade, the inside of rotating furnace tube is equipped with roasting chamber, the inner wall of rotating furnace tube is equipped with a plurality of heat-conducting protrusions, the outer wall of rotating furnace tube is equipped with protruding reinforcing rib, one end of rotating furnace tube is connected with feed hopper, the other end of rotating furnace tube is connected with discharge hopper.

[0006] As preferred, the one end of the rotating furnace tube provided with the feed hopper is rotatably installed with a feed baffle, the feed baffle is provided with a feed hole communicating with the roasting chamber, the feed hole is connected with the feed hopper, the feed hopper is connected with a feeding device, the one end of the rotating furnace tube provided with the discharge hopper is rotatably installed with a discharge baffle, the discharge baffle is provided with a discharge hole communicating with the roasting chamber, the discharge hole is connected with the discharge hopper, and the discharge end of the discharge hopper is provided with a sand storage box.

[0007] As preferred, the inner wall of the sand storage box is provided with a heat preservation layer, and the bottom of the sand storage box is provided with a sand outlet.

[0008] As preferred, the two sides of the rotating furnace tube are provided with brackets, the rotating furnace tube is rotatably installed on the brackets, a gear ring is fixed on the rotating furnace tube, the gear ring is engaged with a drive gear, and the drive gear is connected with a drive motor.

[0009] As a preference, the heat-conducting protrusion is a needle columnar protrusion.

[0010] As a preference, the heating furnace comprises an upper furnace body and a lower furnace body, which are respectively arranged on the upper and lower sides of the rotary furnace drum, and the upper furnace body and the lower furnace body are both provided with heating resistance wires.

[0011] As a preference, the driving motor and the heating resistance wires are both connected with a control box.

[0012] The utility model discloses a heating furnace, which comprises a rotary furnace drum, a driving motor, a heating furnace body and a control box.

[0013] The features and advantages of the utility model will be described in detail in combination with the embodiments and the drawings. DRAWINGS

[0014] Figure 1 It is the structural schematic diagram of the utility model.

[0015] In the drawing: 1, heating furnace; 2, rotary furnace drum; 3, calcination chamber; 4, heat-conducting protrusion; 5, reinforcing rib; 6, feeding hopper; 7, discharge hopper; 8, feeding device; 9, sand storage box. DETAILED DESCRIPTION

[0016] Reference Figure 1The utility model relates to a kind of film-coated sand roasting regenerator, including heating furnace 1 and rotary furnace 2, the inside of the heating furnace 1 is installed with rotary furnace 2, rotary furnace 2 is rotated by drive motor, the both ends of the rotary furnace 2 are arranged through the both ends of the heating furnace 1, roasting chamber 3 is located in the inside of the rotary furnace 2, the inner wall of the rotary furnace 2 is equipped with several heat-conducting protrusions 4, reinforcing rib 5 is protruded on the outer wall of the rotary furnace 2, one end of the rotary furnace 2 is connected with feed hopper 6, the other end of the rotary furnace 2 is connected with discharge hopper 7;Rotary furnace 2 is rotatably installed with feed baffle in one end of being equipped with feed hopper 6, feed hole is opened in the feed baffle and is connected with roasting chamber 3, the feed hole is connected with feed hopper 6, feed hopper 6 is connected with feeding device 8, rotary furnace 2 is rotatably installed with discharge baffle in one end of being equipped with discharge hopper 7, discharge hole is opened in the discharge baffle and is connected with the roasting chamber 3, the discharge hole is connected with discharge hopper 7, and the discharge end of the discharge hopper 7 is equipped with sand storage box 9;Sand storage box 9 adopts steel shell lining heat-resistant insulating material structure, and the bottom of sand storage box 9 is equipped with sand outlet;Rotary furnace 2 is rotatably installed on the support of both sides of rotary furnace 2, gear ring is fixed on the rotary furnace 2, the gear ring is engaged with drive gear, and the drive gear is connected with drive motor;The heat-conducting protrusion 4 is needle columnar protrusion;The heating furnace 1 includes upper furnace body and lower furnace body, and the upper furnace body and the lower furnace body are arranged on the upper side and the lower side of the rotary furnace 2 respectively, and for resistance heating furnace, heating resistance wire is arranged in the upper furnace body and the lower furnace body;The drive motor and the heating resistance wire are connected with control box;Spiral blade is arranged on the inner wall of the rotary furnace 2.

[0017] Cold material enters roasting chamber from feed hopper, rotary furnace rotates, cold material gradually moves from feed end to discharge end and is gradually heated, and then enters sand storage box from discharge hopper and is stored.

[0018] The above examples are illustrative of the present application and are not limiting, any simple transformation of the present application is within the scope of the present application.

Claims

1. A coated sand calciner, characterized by: The utility model provides heating furnace (1) and rotary furnace (2) including, the inside installation of heating furnace (1) is equipped with rotary furnace (2), rotary furnace (2) is rotated by drive motor, the both ends of rotary furnace (2) are provided with the both ends of heating furnace (1), the inner wall of rotary furnace (2) is equipped with helical blade, the inside of rotary furnace (2) is equipped with calcination chamber (3), the inner wall of rotary furnace (2) is equipped with a plurality of heat conduction protrusions (4), the outer wall of rotary furnace (2) is equipped with protruding reinforcing rib (5), one end of rotary furnace (2) is connected with feeding hopper (6), the other end of rotary furnace (2) is connected with discharge hopper (7).

2. The coated sand calcining regenerator according to claim 1, characterized in that: The one end of rotary furnace (2) is rotatably provided with a feeding baffle, the feeding baffle is provided with a feeding hole in communication with the calcination chamber (3), the feeding hole is connected with the feeding hopper (6), the feeding hopper (6) is connected with a feeding device (8), the other end of rotary furnace (2) is rotatably provided with a discharging baffle, the discharging baffle is provided with a discharging hole in communication with the calcination chamber (3), the discharging hole is connected with the discharge hopper (7), and the discharge end of the discharge hopper (7) is provided with a sand storage box (9).

3. The coated sand calcining regenerator according to claim 2, characterized in that: The inner wall of the sand storage box (9) is provided with a heat preservation layer, and the bottom of the sand storage box (9) is provided with a sand outlet.

4. The coated sand calcining regenerator of claim 1, wherein: The both sides of the rotary furnace (2) are provided with supports, the rotary furnace (2) is rotatably installed on the supports, the rotary furnace (2) is fixedly provided with a gear ring, the gear ring is engaged with a drive gear, and the drive gear is connected with a drive motor.

5. The coated sand calcining regenerator of claim 1, wherein: The heat conduction protrusions (4) are needle columnar protrusions.

6. The coated sand calcining regenerator of claim 1, wherein: The heating furnace (1) comprises an upper furnace body and a lower furnace body, and the upper furnace body and the lower furnace body are arranged on the upper side and the lower side of the rotary furnace (2) respectively.

7. The coated sand calcining regenerator according to claim 6, characterized in that: The heating furnace is an electric resistance heating furnace or an electromagnetic induction heating furnace or a gas heating furnace.

8. The coated sand calcining regenerator of claim 6, wherein: The heating furnace is an electric resistance heating furnace, and the upper furnace body and the lower furnace body are both provided with heating resistance wires.

9. The coated sand calcining regenerator of claim 8, wherein: The drive motor and the heating resistance wires are both connected with a control box.

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