CN212505000U - Special trolley for multi-station vertical cast tube annealing furnace and trolley type annealing furnace - Google Patents

Abstract

The utility model relates to an industrial furnace technical field provides a special platform truck of vertical cast tube annealing stove of multistation and platform truck formula annealing stove, the platform truck includes: the travelling mechanism comprises a frame and a plurality of travelling mechanisms arranged on the frame; each running gear includes: the front wheel mechanism and the rear wheel mechanism are symmetrically distributed in pairs; a swing mechanism is arranged above each walking mechanism and fixed on the frame; the slewing mechanism comprises: the rotary motor, the second pinion, the rotary support and the rotary frame; the output shaft of the rotary motor is in transmission connection with a rotating shaft of a second pinion, and the second pinion is meshed with the rotary support; a rotating frame is arranged on the rotary support; a fireproof heat-insulating block is arranged on the rotating frame; an anti-dumping frame is arranged on the refractory heat-insulating block and used for placing the vertical cast pipe. The utility model discloses can carry out heat treatment to many cast tubes simultaneously, productivity gain saves production space, reduction in production cost.

Description

Special trolley for multi-station vertical cast tube annealing furnace and trolley type annealing furnace

Technical Field

The utility model relates to an industrial furnace technical field especially relates to a special platform truck of vertical cast tube annealing stove of multistation and platform truck formula annealing stove.

Background

The hot die trolley type annealing furnace is used for hot die cast iron pipe spheroidizing annealing. The spheroidizing annealing of hot die cast iron pipe is to heat, preserve heat and cool the cast pipe for annealing treatment to eliminate cementite and pearlite produced in the casting process of the cast pipe and to convert the matrix into the matrix structure of the ferritic nodular cast iron pipe, and generally can treat the cast pipe with the diameter of DN1000-DN 2600.

At present, a horizontal hot mold annealing furnace is generally adopted for heating the cast pipe, only one cast pipe can be subjected to heat treatment at each time by adopting the horizontal hot mold annealing furnace, the production efficiency is low, the occupied space is large, and the energy consumption is large.

SUMMERY OF THE UTILITY MODEL

The utility model discloses mainly solve prior art's horizontal hot mould annealing stove and can only carry out thermal treatment to a cast tube at every turn, production efficiency is lower, and occupation space is great, the great technical problem of energy consumption, provide a vertical cast tube annealing stove special platform truck of multistation and car-type annealing stove, can carry out heat treatment to many cast tubes simultaneously, can effectively improve productivity ratio, save production space, reduction in production cost.

The utility model provides a special platform truck of vertical cast tube annealing stove of multistation, include: a frame (5) and a plurality of traveling mechanisms (1) arranged on the frame (5);

each running gear (1) comprises: the front wheel mechanism and the rear wheel mechanism are symmetrically distributed in pairs; each wheel mechanism includes: a walking motor (13), a first pinion (12), a walking wheel (14) and a bull gear (11);

the walking motor (13) is fixed on the frame (5), an output shaft of the walking motor (13) is connected with a rotating shaft of a first small gear (12), the first small gear (12) is meshed with a large gear (11), and the large gear (11) is fixedly installed on a walking wheel (14);

a slewing mechanism (2) is arranged above each walking mechanism (1), and the slewing mechanism (2) is fixed on the frame (5); the swing mechanism (2) comprises: a rotary motor (9), a second pinion (8), a rotary support (10) and a rotary frame (7); wherein, the output shaft of the rotary motor (9) is in transmission connection with the rotating shaft of a second pinion (8), and the second pinion (8) is meshed with a rotary support (10); a rotating frame (7) is arranged on the rotary support (10); a fireproof heat-insulating block (4) is arranged on the rotating frame (7); an anti-dumping frame (6) is arranged on the refractory heat-insulating block (4), and the anti-dumping frame (6) is used for placing a vertical cast tube.

Preferably, a fixing frame (3) is arranged between two adjacent rotary mechanisms (2).

Preferably, the special trolley for the multi-station vertical cast tube annealing furnace adopts self-propelled traction.

Preferably, the walking motor (13) adopts a speed reduction motor.

Correspondingly, the utility model also provides a car-type annealing furnace, include: a furnace body (16) and a trolley special for a multi-station vertical cast tube annealing furnace provided by any embodiment of the utility model;

the special trolley for the multi-station vertical cast tube annealing furnace is arranged in a furnace body (16) when in work;

a combustion system (18) is arranged in the furnace body (16), and burners of the combustion system (18) are arranged on two sides of the furnace body (16);

one end of the furnace body (16) is provided with a furnace door (21), and the top of the furnace door (21) is provided with a pulley mechanism and a steel track (20) matched with the pulley mechanism;

set up furnace gate on furnace body (16) and compress tightly sealing mechanism, furnace gate compresses tightly sealing mechanism and includes: the device comprises a connecting rod (22), a cylinder (23), a cylinder base (24) and a connecting rod base (25); the furnace body of cylinder (23) passes through cylinder base (24) and articulates at furnace body (16) top, the piston rod of cylinder (23) articulates the one end at connecting rod (22), connecting rod base (25) are articulated to the other end bottom of connecting rod (22), install in steel track (20) connecting rod base (25).

Preferably, a plurality of positions on the furnace body (16) are provided with maintenance frames (26).

Preferably, a refractory lining (17) is arranged in the furnace body (16).

Preferably, the furnace body (16) is respectively connected with an air supply system (27), a smoke exhaust system (19) and an air heat exchanger;

the air supply system (27) and the smoke exhaust system (19) are respectively connected with the air heat exchanger.

Preferably, a controller and an ignition transformer are arranged on the burner of the combustion system (18).

The utility model provides a pair of special platform truck of vertical cast tube annealing stove of multistation and platform truck formula annealing stove has following advantage compared with prior art:

1. the special trolley for the multi-station vertical cast tube annealing furnace is provided with a plurality of slewing mechanisms, provides a plurality of cast tube heat treatment stations, and can improve the efficiency and reduce the energy consumption; the cast pipe is vertically placed above the refractory heat-insulating block, and the stability of the cast pipe is ensured through the anti-dumping frame; the rotary motor drives the rotary frame to drive the anti-dumping frame above the rotary frame and the cast pipe to rotate slowly at a uniform speed, so that the uniformity of heating the pipe is ensured, and the deformation is prevented.

2. The fixing frame and the fireproof heat-insulating block on the trolley can prevent the over-high temperature in the hearth and the damage to the trolley body and mechanical components caused by the hot air flowing down to the trolley body.

3. The utility model discloses a trolley has simple structure, compactness, and the trouble is few, longe-lived, efficient, the operation is reliable steady, does not occupy the workshop area, advantages such as stroke unrestricted.

4. The utility model discloses a car-type annealing stove sets up the refractory lining in the furnace body, and the refractory lining adopts refractory fiber, and thermal insulation performance is good, and the heat loss is few, and fuel consumption is few, light in weight. And a plurality of positions on the furnace body are provided with maintenance frames, so that the furnace body is convenient to maintain.

5. The utility model discloses a car-type annealing stove sets up the furnace gate on the furnace body and compresses tightly sealing mechanism, and sealed adoption cylinder compresses tightly the mode between furnace body and the furnace gate, and furnace body sealing performance is good.

6. The utility model discloses a car-type annealing stove adopts the heat supply of furnace body both sides, and a plurality of direct flame natural gas nozzles are located the furnace body both sides, and the high temperature air current that the burning produced gets into the stove in, for the safe operation of guaranteeing each nozzle, every nozzle is furnished with equipment such as controller, ignition transformer, guarantees the nozzle and normally burns.

Drawings

FIG. 1 is a schematic structural view of a special trolley for a multi-station vertical cast tube annealing furnace provided by the present invention;

FIG. 2 is a side view of the special trolley for the multi-station vertical cast tube annealing furnace provided by the utility model;

FIG. 3 is a schematic view of the structure of the traveling mechanism;

FIG. 4 is a schematic view of the motor, slewing support and swivel;

FIG. 5 is a schematic application diagram (front side) of the trolley special for the multi-station vertical cast tube annealing furnace provided by the present invention;

FIG. 6 is a schematic application view (side view) of the trolley special for the multi-station vertical cast tube annealing furnace provided by the present invention;

FIG. 7 is a schematic view showing the structure of a car-type annealing furnace according to the present invention;

FIG. 8 is a schematic side view of a car-type annealing furnace according to the present invention;

FIG. 9 is a schematic structural view of a door pinch seal mechanism;

FIG. 10 is a schematic view showing a state where the door is opened or closed;

fig. 11 is a schematic arrangement of an air supply system and a smoke exhaust system.

Reference numerals: 1. a traveling mechanism; 2. a swing mechanism; 3. a fixed mount; 4. a refractory insulating block; 5. a frame; 6. an anti-toppling frame; 7. a rotating frame; 8. a second pinion gear; 9. a rotary motor; 10. a rotary support; 11. a bull gear; 12. a first pinion gear; 13. a traveling motor; 14. a traveling wheel; 15. casting a pipe; 16. a furnace body; 17. a refractory lining; 18. a combustion system; 19. a smoke exhaust system; 20. a furnace door steel track; 21. a furnace door; 22. a connecting rod; 23. a cylinder; 24. a cylinder base; 25. a connecting rod base; 26. a maintenance frame; 27. an air supply system.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present invention are shown in the drawings.

Example one

FIG. 1 is a schematic structural view of a special trolley for a multi-station vertical cast tube annealing furnace provided by the present invention; FIG. 2 is a side view of the special trolley for the multi-station vertical cast tube annealing furnace provided by the utility model. As shown in fig. 1 and 2, the embodiment of the utility model provides a special platform truck of vertical cast tube annealing stove of multistation, include: a vehicle frame 5 and a plurality of traveling mechanisms 1 provided on the vehicle frame 5.

Fig. 3 is a schematic structural view of the traveling mechanism. As shown in fig. 3, each traveling mechanism 1 includes: the front wheel mechanism and the rear wheel mechanism are symmetrically distributed in pairs; each wheel mechanism includes: a travel motor 13, a first pinion gear 12, a travel wheel 14, and a bull gear 11. The walking motor 13 is fixed on the frame 5, an output shaft of the walking motor 13 is connected with a rotating shaft of a first pinion 12, the first pinion 12 is meshed with a gearwheel 11, and the gearwheel 11 is fixedly arranged on a walking wheel 14; the big gear 11 and the road wheel 14 of each pair of wheel mechanisms are fixedly connected. The walking motor 13 adopts a speed reducing motor.

A swing mechanism 2 is arranged above each walking mechanism 1, the swing mechanism 2 is fixed on a frame 5, and the swing mechanism 2 is arranged on the trolley walking mechanism 1 through the frame 5. The swing mechanism 2 includes: a rotary motor 9, a second pinion 8, a rotary support 10 and a rotary frame 7. Fig. 4 is a schematic diagram of the motor, the rotary support and the rotary frame, as shown in fig. 4, the output shaft of the rotary motor 9 is in transmission connection with the rotating shaft of the second pinion 8, and the second pinion 8 is meshed with the rotary support 10; a rotating frame 7 is arranged on the rotary support 10; the rotating frame 7 is provided with a fireproof heat-insulating block 4; and an anti-dumping frame 6 is arranged on the refractory heat-insulating block 4, and the anti-dumping frame 6 is used for placing a vertical cast tube. A fixing frame 3 is arranged between two adjacent rotary mechanisms 2.

The utility model discloses a main principle of the special platform truck of the vertical cast tube annealing stove of multistation: the special trolley for the multi-station vertical cast tube annealing furnace adopts self-propelled traction. The swing mechanism 2 is arranged above the walking mechanism 1 through a frame 5. The traveling mechanism 1 drives the special trolley for the vertical type cast tube annealing furnace to reciprocate from the charging area to the hearth through the traveling motor 13 by the traveling mechanism 1; the rotating mechanism 2 drives a pinion through a rotating motor 9, a second pinion 8 drives a rotating support 10, the rotating support 10 is installed on a rotating frame 7 to drive the rotating frame 7, and the rotating frame 7 drives an anti-dumping frame 6, a fire-resistant heat-preservation block 4 and a cast pipe above the rotating frame to rotate slowly at a uniform speed, so that the uniformity of pipe heating is ensured, and deformation is prevented. The fixed frame 3 and the fireproof heat-insulating block 4 on the trolley prevent the hot air from flowing down to the trolley body due to overhigh temperature in the hearth and causing damage to the trolley body and mechanical components.

In the present embodiment, each of the traveling mechanism 1 and the turning mechanism 2 is independently driven. Each slewing mechanism 2 is equivalent to a heat treatment station of a cast pipe 15, the cast pipe 15 is vertically placed above the refractory heat-insulating block 4, and the anti-dumping frame 6 ensures that the cast pipe 15 is stable; the number of the travelling mechanisms 1 and the number of the slewing mechanisms 2 can be determined according to required stations, and the travelling mechanisms 1 and the slewing mechanisms 2 of the corresponding slewing mechanisms are designed and manufactured, so that the production efficiency can be effectively improved, and the production space is saved. If the yield requirement is not high, the number of stations can be set according to the actual requirement on the site in each heat treatment, so that the energy consumption is reduced.

The special trolley for the multi-station vertical cast tube annealing furnace adopts a self-propelled traction mode, and wheels can be directly driven to walk by a three-in-one speed reducer of a variable frequency motor through a gear driving trolley shaft. The device has the advantages of simple and compact structure, few faults, long service life, high efficiency, reliable and stable operation, no occupation of workshop area, no limitation of trolley travel and the like.

Example two

FIG. 7 is a schematic view showing the structure of a car-type annealing furnace according to the present invention; FIG. 8 is a schematic side view of the car-type annealing furnace according to the present invention. As shown in fig. 7 and 8, the utility model provides a car-type annealing furnace, comprising: furnace body 16 and the utility model discloses the special platform truck of the vertical cast tube annealing stove of multistation that arbitrary embodiment provided.

The special trolley for the multi-station vertical cast tube annealing furnace is arranged in the furnace body 16 when working, and can provide a plurality of machining stations for the cast tubes 15. The main body of the furnace body 16 adopts a steel structure, and the steel structure of the furnace body is formed by welding profile steel and steel plates. The steel structure ensures that the annealing furnace has enough strength and rigidity to keep stable operation at the working temperature. Except that the edge of the trolley is made of casting materials, a refractory lining 17 is arranged in the furnace body 16, and the refractory lining 17 is made of refractory fibers, so that the trolley has the advantages of good heat insulation performance, less heat loss, less fuel consumption and light weight. Meanwhile, the fiber has good thermal shock resistance, so that the fiber is suitable for intermittent kilns. And a plurality of positions on the furnace body 16 are provided with maintenance frames 26, so that the maintenance is convenient.

One end of the furnace body 16 is provided with a furnace door 21, and the top of the furnace door 21 is provided with a pulley mechanism and a steel track 20 matched with the pulley mechanism. The furnace door 21 is composed of section steel and refractory fiber. In order to reduce the overall structure of the annealing furnace, the utility model adopts a side-open mode. The furnace body 16 is provided with a furnace door pressing and sealing mechanism, and the sealing between the furnace body 16 and the furnace door 21 adopts a cylinder pressing mode. Fig. 9 is a schematic structural view of the oven door press sealing mechanism. As shown in fig. 9, the oven door pressing sealing mechanism includes: a connecting rod 22, a cylinder 23, a cylinder base 24 and a connecting rod base 25; the cylinder body of the cylinder 23 is hinged to the top of the furnace body 16 through a cylinder base 24, the piston rod of the cylinder 23 is hinged to one end of a connecting rod 22, the bottom of the other end of the connecting rod 22 is hinged to a connecting rod base 25, and the connecting rod base 25 is installed in the steel rail 20. Specifically, the cylinder base 24 is welded on a cross beam at the top of the furnace body 16, the cylinder base 24 and the cylinder 23, the connecting rod 22 and the cylinder 23, and the connecting rod 22 and the connecting rod base 25 are hinged through a pin shaft, the connecting rod base 25 is welded with the rigid track 20, and when the side of the furnace door is opened or closed (as shown in fig. 10), the pulley mechanism on the furnace door 21 drives the furnace door to move, so that the side of the furnace door is opened or closed; when the furnace door 21 is closed to the right position, the furnace door 21 is pressed through the furnace door pressing and sealing mechanism, a piston rod of the air cylinder 23 contracts, the connecting rod 22 and the rigid track 20 are driven to abut against the air cylinder 23, and the furnace door 21 and the furnace body 16 are pressed tightly.

A combustion system 18 is arranged in the furnace body 16, and burners of the combustion system 18 are arranged on two sides of the furnace body 16. A combustion system 18 is arranged in the furnace body 16, and burners of the combustion system 18 are arranged on two sides of the furnace body 16. Fig. 11 is a schematic arrangement of an air supply system and a smoke exhaust system. As shown in fig. 11, in this embodiment, heat is supplied from two sides of the furnace body 16, 24 630KW natural gas burners are located on two sides of the furnace body, high-temperature airflow generated by combustion enters the furnace, and in order to ensure safe operation of each burner, each burner is equipped with a controller, an ignition transformer and other devices, so as to ensure normal combustion of the burner. And a natural gas branch pipe in front of the burner is provided with a manual ball valve, a gas electromagnetic valve and an air-fuel ratio regulating valve. The natural gas supply system for supplying gas to the combustion system 18 is configured according to the gas safety technical standard, and is provided with a filter, a flowmeter, a stop valve, a regulating valve, a pressure switch, a manual regulating valve and other devices, so that the functions of filtering, high-pressure cutting, low-pressure cutting, gas metering, safety interlocking and the like are realized, and the safety production is ensured.

The furnace body 16 is respectively connected with an air supply system 27, a smoke exhaust system 19 and an air heat exchanger; the air supply system 27 and the smoke exhaust system 19 are respectively connected with the air heat exchanger. The combustion fan of the air supply system 27 is a high-pressure centrifugal fan with excellent quality and reliable quality, a damping device is arranged on a base of the fan, a flexible connection is arranged at an outlet of the fan, and a suction valve is arranged at an inlet of the fan. An electric butterfly valve for continuous quantity control is arranged on the combustion-supporting air main pipe, and the opening and closing quantity of the valve is adjusted according to the furnace temperature. The combustion-supporting air main pipe is provided with a pressure switch and a pressure transmitter, the combustion-supporting air pressure is measured, and the air pressure is kept stable through an electric regulating valve. The air is preheated by the preheater and then enters the burner to assist combustion, the hot air pipeline is wrapped by heat insulation materials to be insulated, and the hot air pipeline is wrapped by galvanized iron sheets outside. In order to ensure the normal work of the combustion system, the expansion joint is arranged on the hot air pipeline, the anti-explosion film is arranged on the branch pipeline, and the place where the anti-explosion film is arranged is covered by the steel wire mesh, so that the safety and the usability of the furnace are improved. A thermocouple is arranged at the outlet of the heat exchanger to detect the smoke temperature at the outlet of the heat exchanger, and a thermocouple is arranged on the hot air pipeline to measure the temperature of the hot air. A manual butterfly valve is arranged on a combustion-supporting air branch pipe in front of the burner, and can be used for fine adjustment of combustion-supporting air. A hot air diffusing butterfly valve is added on a hot air pipeline at the outlet of the air heat exchanger, the circulation of cold air in the air heat exchanger is increased in a diffusing mode, and the heat exchanger is prevented from being over-burnt at a stage with smaller heat load at the heat insulation section.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or some or all of the technical features may be equivalently replaced, without substantially departing from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. The utility model provides a special platform truck of vertical cast tube annealing stove of multistation which characterized in that includes: a frame (5) and a plurality of traveling mechanisms (1) arranged on the frame (5);

each running gear (1) comprises: the front wheel mechanism and the rear wheel mechanism are symmetrically distributed in pairs; each wheel mechanism includes: a walking motor (13), a first pinion (12), a walking wheel (14) and a bull gear (11);

the walking motor (13) is fixed on the frame (5), an output shaft of the walking motor (13) is connected with a rotating shaft of a first small gear (12), the first small gear (12) is meshed with a large gear (11), and the large gear (11) is fixedly installed on a walking wheel (14);

a slewing mechanism (2) is arranged above each walking mechanism (1), and the slewing mechanism (2) is fixed on the frame (5); the swing mechanism (2) comprises: a rotary motor (9), a second pinion (8), a rotary support (10) and a rotary frame (7); wherein, the output shaft of the rotary motor (9) is in transmission connection with the rotating shaft of a second pinion (8), and the second pinion (8) is meshed with a rotary support (10); a rotating frame (7) is arranged on the rotary support (10); a fireproof heat-insulating block (4) is arranged on the rotating frame (7); an anti-dumping frame (6) is arranged on the refractory heat-insulating block (4), and the anti-dumping frame (6) is used for placing a vertical cast tube.

2. The special trolley for the multi-station vertical cast tube annealing furnace according to claim 1, wherein a fixing frame (3) is arranged between two adjacent slewing mechanisms (2).

3. The special trolley for the multi-station vertical cast tube annealing furnace according to claim 1, wherein the special trolley for the multi-station vertical cast tube annealing furnace adopts self-propelled traction.

4. The special trolley for the multi-station vertical cast tube annealing furnace according to claim 1, wherein the walking motor (13) is a speed reduction motor.

5. A trolley type annealing furnace, characterized by comprising a furnace body (16) and the special trolley for the multi-station vertical cast tube annealing furnace of claims 1 to 4;

the special trolley for the multi-station vertical cast tube annealing furnace is arranged in a furnace body (16) when in work;

a combustion system (18) is arranged in the furnace body (16), and burners of the combustion system (18) are arranged on two sides of the furnace body (16);

one end of the furnace body (16) is provided with a furnace door (21), and the top of the furnace door (21) is provided with a pulley mechanism and a steel track (20) matched with the pulley mechanism;

set up furnace gate on furnace body (16) and compress tightly sealing mechanism, furnace gate compresses tightly sealing mechanism and includes: the device comprises a connecting rod (22), a cylinder (23), a cylinder base (24) and a connecting rod base (25); the furnace body of cylinder (23) passes through cylinder base (24) and articulates at furnace body (16) top, the piston rod of cylinder (23) articulates the one end at connecting rod (22), connecting rod base (25) are articulated to the other end bottom of connecting rod (22), install in steel track (20) connecting rod base (25).

6. The cart-type annealing furnace according to claim 5, wherein a plurality of service racks (26) are provided on the furnace body (16).

7. The trolley type annealing furnace according to claim 5 or 6, wherein a refractory lining (17) is provided in the furnace body (16).

8. The trolley type annealing furnace according to claim 5 or 6, wherein an air supply system (27), a smoke exhaust system (19) and an air heat exchanger are connected to the furnace body (16), respectively;

the air supply system (27) and the smoke exhaust system (19) are respectively connected with the air heat exchanger.

9. The trolley type annealing furnace according to claim 5, wherein a controller and an ignition transformer are provided on the burners of the combustion system (18).

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