CN210922171U

CN210922171U - Medium frequency electric furnace

Info

Publication number: CN210922171U
Application number: CN201922056950.7U
Authority: CN
Inventors: 袁景良
Original assignee: Yantai Sanhe Steel Casting Co ltd
Current assignee: Yantai Sanhe Steel Casting Co ltd
Priority date: 2019-11-23
Filing date: 2019-11-23
Publication date: 2020-07-03
Anticipated expiration: 2029-11-23

Abstract

The utility model discloses an intermediate frequency electric furnace relates to metal melting production facility technical field. The technical key points are as follows: the utility model provides an intermediate frequency electric furnace, includes frame, furnace body, the fire door has been seted up on the top of furnace body, be provided with the crucible in the furnace body the crucible outside is equipped with and encircles the crucible and be used for the induction coil of heating, be equipped with the discharge gate with the crucible intercommunication on the furnace body, be equipped with the dust excluding hood directly over the fire door, fixedly connected with dust absorption pipe on the dust excluding hood, dust absorption pipe one end is connected with the dust excluding hood, and the other end is connected with the suction fan, the gas outlet of suction fan is connected with the filter, its characterized in that, be provided with the subassembly that slides that can make the dust excluding hood go up and down between dust absorption pipe and the dust excluding hood, be provided with the. The utility model has the advantage of good dust removal effect.

Description

Medium frequency electric furnace

Technical Field

The utility model relates to a metal melting production facility technical field, more specifically say, it relates to an intermediate frequency electric stove.

Background

The medium frequency electric furnace converts 50HZ alternating current into direct current at power frequency, then converts the direct current into adjustable medium frequency current, supplies medium frequency alternating current flowing through a capacitor and an induction coil, generates high-density magnetic induction lines in the induction coil, cuts metal materials contained in the induction coil, generates great eddy current and heats in the metal materials, and achieves the purpose of heating the materials.

The utility model discloses a chinese utility model patent with publication number CN203068992U discloses a dust exhaust device of medium frequency electric stove, including the medium frequency electric stove, be equipped with the smoke and dust cover in the top of medium frequency electric stove, the both ends of flue gas pipe are connected in the air inlet of smoke and dust cover and fan respectively, the gas outlet of fan and dust filter's access connection.

The above prior art solution has the following drawbacks: when the intermediate frequency electric stove during operation because the dust that produces can spread to the four sides, foretell smoke and dust cover is far away from the fire door, and the distance of keeping can reduce dust absorption effect, can not carry out effectual clearance to the smoke and dust that produces well in the intermediate frequency electric stove, leads to dust and smoke and dust still to give off in the air, the polluted environment and lead to the fact harm to health.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, the utility model aims to provide an intermediate frequency electric stove, it has the advantage that dust removal effect is good.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides an intermediate frequency electric furnace, includes frame, furnace body, the fire door has been seted up on the top of furnace body, be provided with the crucible in the furnace body the crucible outside is equipped with and encircles the crucible and be used for the induction coil of heating, be equipped with the discharge gate with the crucible intercommunication on the furnace body, be equipped with the dust excluding hood directly over the fire door, fixedly connected with dust absorption pipe on the dust excluding hood, dust absorption pipe one end is connected with the dust excluding hood, and the other end is connected with the suction fan, the gas outlet of suction fan is connected with the filter, be provided with the subassembly that slides that can make the dust excluding hood go up and down between dust absorption pipe and the dust excluding hood, be provided with the drive.

Through adopting above-mentioned technical scheme, metal in the furnace body is melting the in-process, can produce more smoke and dust, need effectively clear up, and the drive arrangement drive dust excluding hood that is equipped with moves to the periphery laminating of furnace mouth department with the furnace mouth, prevents that the smoke and dust from spreading everywhere, polluted environment and harm health, has strengthened dust removal effect.

The utility model discloses further set up to: the slip subassembly includes first sleeve, second sleeve, the one end and the dust excluding hood of first sleeve are connected, the other one end of first sleeve with the telescopic one end of second is slided and is connected, the telescopic other one end and dust absorption pipe fixed connection of second.

Through adopting above-mentioned technical scheme, when handling the smoke and dust that produces in the furnace body, need place the dust excluding hood in the nearer place of fire door or laminating fire door, prevent that the dust excluding hood distance makes dust removal effect not good too far, the first sleeve and the second sleeve that are equipped with carry out sliding connection for the dust excluding hood conveniently removes to the fire door, has strengthened dust removal effect.

The utility model discloses further set up to: the second sleeve is sleeved outside the first sleeve, a sealing groove is formed in the inner wall of one end, facing the first sleeve, of the second sleeve, and a sealing ring is embedded in the sealing groove.

Through adopting above-mentioned technical scheme, when first sleeve slided in the second sleeve, leave the clearance between the sleeve, when the suction fan adsorbed the smoke and dust, the clearance between first sleeve and the second sleeve can influence the effect of suction fan, and the sealing washer that is equipped with seals the clearance, adsorbs more thoroughly to the smoke and dust, has strengthened the effect of removing dust.

The utility model discloses further set up to: the driving device comprises a cylinder arranged along the vertical direction, the cylinder body of the cylinder is fixedly connected with the side wall of the dust collection pipe, and a piston rod of the cylinder is connected with the outer side wall of one end, close to the dust removal cover, of the first sleeve.

Through adopting above-mentioned technical scheme, when the lift dust excluding hood, need drive power and drive first sleeve, the cylinder that is equipped with drives first sleeve and goes up and down, has realized the lift of dust excluding hood, has effectively strengthened the effect of removing dust.

The utility model discloses further set up to: the first sleeve is equipped with the guide ring towards the telescopic one end outer wall of second, second sleeve inner wall is provided with the spacing ring that prevents first sleeve breaking away from the second sleeve.

Through adopting above-mentioned technical scheme, when first sleeve slided in the second sleeve, break away from the second sleeve when sliding to the bottom in order to prevent first sleeve, the spacing ring and the guide ring combined action that are equipped with have effectively injectd first telescopic position.

The utility model discloses further set up to: the dust excluding hood inner wall is connected with the filter unit, the filter unit can be dismantled with the dust excluding hood and be connected.

Through adopting above-mentioned technical scheme, when handling the smoke and dust that produces the furnace body the inside, in order to prevent that a large amount of smoke and dust from inhaleing and leading to the dust absorption pipe to block up in the dust absorption pipe, the filter screen that is equipped with at first on the dust excluding hood inner wall is done earlier to the smoke and dust and is handled, then detaches the smoke and dust through the dust absorption pipe, when the smoke and dust on the filter screen is more, can dismantle the filter screen at any time and clear up, has effectively strengthened dust removal effect.

The utility model discloses further set up to: the filter unit comprises an elastic ring and a filter screen, the elastic ring is provided with a broken opening, through holes are formed in two ends, located at the broken opening, of the elastic ring, clamping grooves are formed in the inner wall of the dust hood, and the elastic ring is clamped in the clamping grooves.

Through adopting above-mentioned technical scheme, when the installation, the through-hole the inside that use instrument stretched into was equipped with diminishes the elasticity ring extrusion, then the elasticity ring joint diminishes in the draw-in groove, when dismantling, the instrument of recycling stretches into in the through-hole and diminishes the elasticity ring extrusion, takes out the filter unit and clears up the smoke and dust on the filter screen.

The utility model discloses further set up to: one end, far away from the second sleeve, of the first sleeve is in threaded connection with the dust removal cover.

Through adopting above-mentioned technical scheme, because the dust excluding hood uses after the end time, can constantly laying dust at the dust excluding hood inner wall, when laying dust is more, influence the dust removal effect of dust excluding hood, first sleeve and dust excluding hood threaded connection make things convenient for the dust excluding hood to dismantle, in time clear up the smoke and dust in the dust excluding hood, further improved the effect of removing dust.

The utility model discloses further set up to: the side wall of the first sleeve is provided with a guide rod along the movement direction of the first sleeve, and the side wall of the second sleeve is provided with a guide sleeve which is connected with the guide rod in a sliding manner.

Through adopting above-mentioned technical scheme, when first sleeve slided in the second sleeve, guide bar and the uide bushing combined action that is equipped with played the guide effect to first sleeve and second sleeve on the one hand, stability when improving the motion, on the other hand when dismantling the dust excluding hood prevents first sleeve at second sleeve internal rotation, has injectd first telescopic position.

To sum up, the utility model discloses a beneficial technological effect does:

(1) by arranging the first sleeve and the second sleeve, the dust hood can be lifted, and the dust hood is placed at the furnace mouth to be attached to the periphery of the furnace mouth, so that smoke generated in the furnace body is well treated, and the dust removal effect is effectively enhanced;

(2) by arranging the filter screen, the smoke dust generated in the furnace body is treated firstly, and the residual smoke dust is discharged to the filter by the suction fan for treatment, so that the dust removal effect is further enhanced.

Drawings

FIG. 1 is a schematic view of the overall structure of a medium frequency electric furnace;

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

FIG. 3 is a partial cross-sectional view of a medium frequency electric furnace;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is an enlarged view of portion C of FIG. 3;

FIG. 6 is a schematic view of the connection structure of the filter screen and the elastic ring;

fig. 7 is an enlarged view of a portion D in fig. 6.

Reference numerals: 1. a frame; 2. a furnace body; 3. a furnace mouth; 4. a crucible; 5. an induction coil; 6. a discharge port; 7. a dust hood; 8. a dust collection pipe; 9. a suction fan; 10. a filter; 11. a first sleeve; 12. a second sleeve; 13. a sealing groove; 14. a seal ring; 15. a cylinder; 16. a guide ring; 17. a limiting ring; 18. a filter screen; 19. a card slot; 20. opening breaking; 21. an elastic ring; 22. a through hole; 23. a guide bar; 24. a guide sleeve; 25. a connecting plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, a medium frequency electric furnace disclosed by the present invention comprises a frame 1, a furnace body 2 rotatably connected to the frame 1, a rotating motor connected to the middle part of the furnace body 2, the furnace body 2 rotatable on the frame 1, a furnace mouth 3 formed at the top end of the furnace body 2, a cylindrical crucible 4 disposed in the furnace body 2, an induction coil 5 surrounding the crucible 4 and used for heating, a U-shaped discharge port 6 communicated with the crucible 4 and perpendicular to the furnace mouth 3 formed on the furnace body 2, a dust hood 7 disposed horizontally over the furnace mouth 3, an opening of the dust hood 7 facing the furnace mouth 3, a dust suction pipe 8 fixedly connected to the dust hood 7, one end of the dust suction pipe 8 connected to the dust hood 7, and the other end connected to a suction fan 9, a filter 10 connected to the gas outlet of the suction fan 9, a sliding component disposed vertically between the dust suction pipe 8 and the dust hood 7 and capable of lifting the dust hood 7, the dust suction pipe 8 is provided with a driving device for driving the dust hood 7 to lift. When metal in the furnace body 2 is melted and generates more smoke, the driving device drives the dust removal cover 7 to move to the furnace mouth 3 and be attached to the periphery of the furnace mouth 3, smoke diffusion is prevented, and the dust removal effect is enhanced.

Referring to fig. 2, the subassembly that slides includes first sleeve 11, second sleeve 12, is equipped with the external screw thread on the lateral wall that first sleeve 11 is close to dust excluding hood 7 one end, is equipped with the internal thread on the dust excluding hood 7 rather than being connected, and the one end and the 7 threaded connection of dust excluding hood of first sleeve 11 make things convenient for the later stage to dismantle dust excluding hood 7, and the other one end of first sleeve 11 slides along vertical direction with the one end of second sleeve 12 and is connected, and the other one end and the dust absorption pipe 8 welding of second sleeve 12. The driving device comprises a cylinder 15 arranged along the vertical direction, the cylinder body of the cylinder 15 is connected with the side wall of the dust collection pipe 8 through a bolt, a connecting plate 25 is welded on the outer side wall of one end, close to the dust removal cover 7, of the first sleeve 11, a piston rod of the cylinder 15 is in threaded connection with the connecting plate 25, the side wall of the first sleeve 11 is provided with a guide rod 23 along the movement direction of the side wall, and the side wall of the second sleeve 12 is provided with a guide sleeve 24 in sliding connection with the guide rod 23. In this embodiment, when handling the smoke and dust that produces in the furnace body 2, cylinder 15 drives first sleeve 11 and moves for dust excluding hood 7 moves 3 tops and the laminating of fire door 3, guide bar 23 and uide bushing 24 play the guide effect to the sleeve, stability when improving the motion, and it is more convenient when dismantling dust excluding hood 7 moreover, under the combined action of cylinder 15, guide bar 23, uide bushing 24 and first sleeve 11 and second sleeve 12, the effect of dust removal has effectively been strengthened.

Referring to fig. 3 and 4, the second sleeve 12 is sleeved outside the first sleeve 11, a sealing groove 13 is formed in an inner wall of one end, facing the first sleeve 11, of the second sleeve 12, a sealing ring 14 is embedded in the sealing groove 13, and the sealing ring 14 is an O-shaped sealing ring. The dust collection effect of the suction fan 9 can be influenced by the gap between the first sleeve 11 and the second sleeve 12, and the O-shaped sealing ring is arranged in the sealing groove 13 formed in the second sleeve 12, so that the dust collection effect of the suction fan 9 is enhanced, and the dust can be more thoroughly adsorbed.

In order to prevent the first sleeve 11 from being separated from the second sleeve 12 when sliding to the bottom end, a guide ring 16 is arranged on the outer wall of one end of the first sleeve 11 facing the second sleeve 12, a limiting ring 17 for preventing the first sleeve 11 from being separated from the second sleeve 12 is arranged on the inner wall of the second sleeve 12, and the inner diameter of the limiting ring 17 is smaller than the outer diameter of the guide ring 16.

Referring to fig. 5, 6 and 7, dust excluding hood 7 is close to its open-ended inner wall and is connected with the filter unit, and the filter unit can be dismantled with dust excluding hood 7 and be connected, and the filter unit includes elastic ring 21 and filter screen 18, and filter screen 18 adopts and makes with elastic material, and elastic ring 21 is equipped with disconnected opening 20, and elastic ring 21 is located the both ends of disconnected opening 20 department and is equipped with through-hole 22 along vertical direction, and annular slot 19 has been seted up to dust excluding hood 7 inner wall, and elastic ring 21 joint is in slot 19. When handling the smoke and dust that produces to furnace body 2 the inside, in order to prevent that a large amount of smoke and dust from inhaleing and leading to in the dust absorption pipe 8 to block up, the filter unit who is equipped with earlier at the dust excluding hood 7 inner wall is handled the smoke and dust earlier, then detach the smoke and dust through dust absorption pipe 8, when the smoke and dust on the filter screen 18 is more, can dismantle filter screen 18 at any time and clear up, when the installation, the tool stretches into the through-hole 22 the inside that is equipped with, it diminishes to extrude elastic ring 21, then elastic ring 21 joint diminishes in draw-in groove 19, when dismantling, it diminishes to extrude elastic ring 21 in the through-hole 22 to utilize the tool stretches into again, take out the smoke and dust on the clearance filter screen 18, dust removal effect.

The implementation principle of the embodiment is as follows: when using the intermediate frequency electric stove, promote first sleeve 11 through the piston rod by cylinder 15 and slide in second sleeve 12, and then drive dust excluding hood 7 and remove furnace body 2 top and laminate with fire door 3, suction fan 9 carries out the dust absorption, and the smoke and dust in the furnace body 2 filters through filter screen 18 on the dust excluding hood 7 earlier, and then remaining smoke and dust passes through suction fan 9 and adsorbs the filter 10 of being connected with suction fan 9 and removes dust. Under the combined action of the filter screen 18, the first sleeve 11 and the second sleeve 12, the dust removal effect is enhanced.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An intermediate frequency electric furnace, which comprises a frame (1) and a furnace body (2), wherein a furnace opening (3) is formed in the top end of the furnace body (2), a crucible (4) is arranged in the furnace body (2), an induction coil (5) surrounding the crucible (4) and used for heating is arranged outside the crucible (4), a discharge hole (6) communicated with the crucible (4) is formed in the furnace body (2), a dust hood (7) is arranged right above the furnace opening (3), a dust suction pipe (8) is fixedly connected onto the dust hood (7), one end of the dust suction pipe (8) is connected with the dust hood (7), the other end of the dust suction pipe is connected with a suction fan (9), a filter (10) is connected to a gas outlet of the suction fan (9), and the intermediate frequency electric furnace is characterized in that a sliding component capable of lifting the dust hood (7) is arranged between the dust suction pipe (8) and, and a driving device for driving the dust hood (7) to lift is arranged on the dust collection pipe (8).

2. The medium frequency furnace according to claim 1, wherein the sliding assembly comprises a first sleeve (11) and a second sleeve (12), one end of the first sleeve (11) is connected with the dust hood (7), the other end of the first sleeve (11) is connected with one end of the second sleeve (12) in a sliding manner, and the other end of the second sleeve (12) is fixedly connected with the dust suction pipe (8).

3. The medium frequency electric furnace according to claim 2, wherein the second sleeve (12) is sleeved outside the first sleeve (11), the inner wall of the second sleeve (12) facing one end of the first sleeve (11) is provided with a sealing groove (13), and a sealing ring (14) is embedded in the sealing groove (13).

4. The medium frequency furnace according to claim 2, wherein the driving device comprises a cylinder (15) arranged along the vertical direction, the cylinder body of the cylinder (15) is fixedly connected with the side wall of the dust suction pipe (8), and the piston rod of the cylinder (15) is connected with the outer side wall of one end of the first sleeve (11) close to the dust hood (7).

5. The medium frequency furnace according to claim 2, wherein the outer side wall of the end of the first sleeve (11) facing the second sleeve (12) is provided with a guide ring (16), and the inner wall of the second sleeve (12) is provided with a stop ring (17) for preventing the first sleeve (11) from separating from the second sleeve (12).

6. The medium frequency electric furnace according to claim 1, wherein a filter unit is connected to the inner wall of the dust hood (7), and the filter unit is detachably connected with the dust hood (7).

7. The medium frequency electric furnace according to claim 6, wherein the filtering unit comprises an elastic ring (21) and a filtering screen (18), the elastic ring (21) is provided with a cut-off opening (20), two ends of the elastic ring (21) at the cut-off opening (20) are provided with through holes (22), a clamping groove (19) is formed in the inner wall of the dust hood (7), and the elastic ring (21) is clamped in the clamping groove (19).

8. The medium frequency electric furnace according to claim 2, wherein the end of the first sleeve (11) remote from the second sleeve (12) is screwed to the dust hood (7).

9. A medium frequency furnace according to claim 2, characterized in that the side wall of the first sleeve (11) is provided with a guide rod (23) in the direction of its movement, and the side wall of the second sleeve (12) is provided with a guide sleeve (24) slidably connected to the guide rod (23).