CN215491088U

CN215491088U - Vacuum resistance furnace for producing and preparing nitrided alloy

Info

Publication number: CN215491088U
Application number: CN202121348596.6U
Authority: CN
Inventors: 张磊; 李春德; 刘金怀; 耿桂宏
Original assignee: Yinchuan Industrial Technology Research Institute; Ningxia Zhonghong Nitriding Products Co ltd
Current assignee: Yinchuan Industrial Technology Research Institute; Ningxia Zhonghong Nitriding Products Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-01-11
Anticipated expiration: 2031-06-17

Abstract

The utility model provides a vacuum resistance furnace for producing and preparing nitralloy, which relates to the field of resistance furnaces and comprises a furnace body, a furnace cover hinged at one end of the furnace body and a gas treatment mechanism arranged at the top of the furnace body, wherein a fireproof heat-insulating layer is arranged on the inner wall of the furnace body, graphite electrodes distributed at equal intervals are arranged at the top inside the furnace body, electrode ends distributed at equal intervals are fixed at two sides of the furnace body, copper conductors are connected with the top ends of the electrode ends distributed at equal intervals, the electrode ends at two sides of the furnace body are respectively connected with two ends of the graphite electrodes, a waste heat recovery assembly is adopted, the heat in the gas can be recovered, the gas is treated, the waste of heat resources in the gas is prevented, the utilization rate of the resources is effectively improved, and the secondary pollution of the air caused by the discharge of the gas containing the heat can be avoided, thereby being convenient for the use of the resistance furnace.

Description

Vacuum resistance furnace for producing and preparing nitrided alloy

Technical Field

The utility model relates to the field of resistance furnaces, in particular to a vacuum resistance furnace for producing and preparing a nitriding alloy.

Background

The resistance furnace is an industrial furnace which heats a workpiece or a material by heating an electric heating element or a heating medium in the furnace by using current. Resistance furnaces are used in the mechanical industry for pre-metal forging heating, metal heat treatment heating, brazing, powder metallurgy sintering, glass ceramic firing and annealing, low melting metal melting, drying of sand molds and paint film layers, and the like.

However, the existing vacuum resistance furnace has the problem that the heat in the gas cannot be recovered in the using process, so that the heat is discharged along with the gas, waste of heat resources is caused, the utilization rate of the resources is reduced, secondary pollution of the air is easily caused, the environmental quality in the production and preparation of the nitrided alloy is reduced, and the work of workers is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the prior art, the utility model provides a vacuum resistance furnace for producing and preparing a nitriding alloy, which aims to solve the problem that the heat in the gas cannot be recovered.

The technical scheme provided by the utility model is as follows: the utility model provides a vacuum resistance furnace of production preparation azotic, includes the furnace body, articulates in the bell of furnace body one end and installs in the gas treatment mechanism at the furnace body top, the inner wall of furnace body is provided with fire-resistant heat preservation, and the inside top of furnace body installs the graphite electrode that the equidistance distributes, the both sides of furnace body all are fixed with the electrode end that the equidistance distributes, and the top of the electrode end that the equidistance distributes all is connected with the copper conductor, the electrode end of furnace body both sides is connected with the both ends of graphite electrode respectively, and the top of furnace body installs outlet duct and intake pipe, the outlet duct is connected with gas treatment mechanism, just gas treatment mechanism will the waste gas that the outlet duct was exported is handled and is discharged.

Further, the gas treatment mechanism comprises a waste heat recovery assembly and an installation assembly for fixing the waste heat recovery assembly and the furnace body, the waste heat recovery assembly comprises a treatment box, a heat conduction pipe is installed inside the treatment box, the top end of the treatment box is connected with a water inlet valve and a water drain valve, the water inlet valve and the water drain valve are respectively communicated with two ends of the heat conduction pipe, and one side of the treatment box is connected with an exhaust pipe.

Further, still include cooling body, cooling body be used for with furnace body, copper conductor and electrode end cool down, just cooling body is including installing inlet tube and the outlet pipe in furnace body one side, all install the valve on inlet tube and the outlet pipe, and be connected with the hose between valve and the electrode end.

Further, the mounting assembly includes:

the mounting base is mounted on the furnace body, four connecting grooves are formed in the mounting base, two locking screws are screwed on two sides of the mounting base, and the four locking screws penetrate through the four connecting grooves respectively;

be fixed in the connecting block of handling four corners of bottom of the case portion, four the connecting block and four spread groove one-to-one, and the inside of four connecting blocks all seted up with locking screw assorted spiro union hole.

Furthermore, a temperature sensor and a pressure sensor are respectively installed at the tops of two sides of the inner wall of the furnace body.

Further, handle the inside top and the bottom of incasement portion and install two crisscross guide plates that distribute of head and the tail, and two guide plates are located the both sides of heat pipe respectively.

Furthermore, an overhaul stand is welded on one side of the furnace body, and a ladder obliquely arranged is welded at one end of the overhaul stand.

Further, the bottom of furnace body inner wall both sides all installs reinforced car and holds the platform, and the inside bottom symmetry of furnace body is provided with two reinforced car guide rails, two it is located between two reinforced car and holds the platform to add the skip guide rail.

The utility model has the technical effects that:

1. the waste heat recovery assembly is adopted, so that the heat in the gas can be recovered, the gas is treated, the waste of heat resources in the gas is prevented, the utilization rate of the resources is effectively improved, and the secondary pollution of the air caused by the discharge of the gas containing the heat can be avoided, so that the use of the resistance furnace is facilitated.

2. Aiming at the waste heat recovery assembly, the mounting assembly is adopted, so that the waste heat recovery assembly and the furnace body can be limited and fixed, the waste heat recovery assembly can be quickly disassembled and assembled, the maintenance of the waste heat recovery assembly is facilitated, the maintenance efficiency of the waste heat recovery assembly is effectively improved, the normal use of the waste heat recovery assembly can be ensured, and the treatment of gas is further realized.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a cross-sectional view of a gas treatment mechanism of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

the device comprises a furnace body 1, a fire-resistant insulating layer 2, a feeding vehicle guide rail 3, a feeding vehicle receiving table 4, a graphite electrode 5, a temperature sensor 6, a pressure sensor 7, a gas processing mechanism 8, a processing box 81, a water inlet valve 82, a water discharge valve 83, a guide plate 84, a guide plate 85, an exhaust pipe 86, a heat conduction pipe 86, a copper conductor 9, a hose 10, a water inlet pipe 11, a water outlet pipe 12, a water outlet pipe 13, an overhaul table 14, a step 15, a mounting seat 16, a gas outlet pipe 17, a gas inlet pipe 18, a furnace cover 19, a valve 20, a locking screw rod 21, a connecting block 22, a connecting groove 23 and an electrode end.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example one

As shown in fig. 1 to 4, a vacuum resistance furnace for producing and preparing a nitrided alloy comprises a furnace body 1, a furnace cover 18 hinged to one end of the furnace body 1, and a gas treatment mechanism 8 installed at the top of the furnace body 1, wherein a refractory insulating layer 2 is arranged on the inner wall of the furnace body 1, graphite electrodes 5 distributed at equal intervals are installed at the top inside the furnace body 1, electrode ends 23 distributed at equal intervals are fixed at two sides of the furnace body 1, copper conductors 9 are connected to the top ends of the electrode ends 23 distributed at equal intervals, the electrode ends 23 at two sides of the furnace body 1 are respectively connected with two ends of the graphite electrodes 5, an air outlet pipe 16 and an air inlet pipe 17 are installed at the top end of the furnace body 1, the air outlet pipe 16 is connected with the gas treatment mechanism 8, and the gas treatment mechanism 8 treats and discharges waste gas input by the air outlet pipe 16.

In this embodiment, preferably, the gas treatment mechanism 8 includes a waste heat recovery component and a mounting component for fixing the waste heat recovery component and the furnace body 1, the waste heat recovery component includes a treatment tank 81, a heat conduction pipe 86 is mounted inside the treatment tank 81, the top end of the treatment tank 81 is connected with a water inlet valve 82 and a water drain valve 83, the water inlet valve 82 and the water drain valve 83 are respectively communicated with two ends of the heat conduction pipe 86, and one side of the treatment tank 81 is connected with an exhaust pipe 85.

Specifically, in the present embodiment, the refractory insulating layer 2 is formed by stacking refractory bricks, so that a hearth is formed inside the furnace body 1;

during nitriding treatment, a worker can open the furnace cover 18 firstly, then put raw materials to be nitrided into the furnace body 1, close the furnace cover 18, and then electrify the graphite electrode 5 through the copper conductor 9 and the electrode end 23, so that the graphite electrode 5 heats the hearth, meanwhile, the worker can input nitrogen into the furnace body 1 through the air inlet pipe 17 and exhaust gas in the furnace body 1 through the air outlet pipe 16, so that the inside of the furnace body 1 keeps a certain vacuum degree, the raw materials are nitrided, the use of a resistance furnace is realized, and the production and preparation of the nitrided alloy are completed;

in addition, in the use process of the resistance furnace, when the gas outlet pipe 16 discharges the gas in the furnace body 1, the gas is discharged into the treatment tank 81 through the gas outlet pipe 16, at the moment, a worker can open the water inlet valve 82 to enable the cold water to be conveyed into the heat conduction pipe 86, then the heat conduction pipe 86 absorbs the heat in the gas through the cold water in the heat conduction pipe 86, the cold water absorbs the heat to form hot water, and then the hot water is discharged through the water discharge valve 83 to realize the recovery of the heat in the gas, after the recovery, the gas is discharged through the gas exhaust pipe 85, so that the treatment of the gas is realized, the waste of heat resources in the gas is prevented, meanwhile, the secondary pollution of the air caused by the discharge of the gas containing the heat can be avoided, and the use of the resistance furnace is facilitated.

In this embodiment, preferably, the furnace body further comprises a cooling mechanism, the cooling mechanism is used for cooling the furnace body 1, the copper conductor 9 and the electrode end 23, the cooling mechanism comprises a water inlet pipe 11 and a water outlet pipe 12 which are installed on one side of the furnace body 1, valves 19 are installed on the water inlet pipe 11 and the water outlet pipe 12, and a hose 10 is connected between the valve 19 and the electrode end 23.

Specifically, in the working process of the resistance furnace, a worker can convey the cooling liquid into the water inlet pipe 11, then the cooling liquid is conveyed to the electrode end 23 under the action of the hose 10, then the cooling liquid is conveyed into the water inlet pipe 12 through the hose 10 and is discharged through the water outlet pipe 12, and a cooling water return system is formed, so that the electrode end 23 and the copper conductor 9 are cooled and cooled, the metal melting of the copper conductor 9, the electrode end 23 and the furnace body 1 can be prevented, and the normal use of the resistance furnace can be guaranteed.

In this embodiment, preferably, the mounting assembly includes:

the furnace body is characterized by comprising a mounting seat 15 mounted on the furnace body 1, wherein four connecting grooves 22 are formed in the mounting seat 15, two locking screws 20 are screwed on two sides of the mounting seat 15, and the four locking screws 20 respectively penetrate through the four connecting grooves 22;

be fixed in the connecting block 21 of handling four corners in case 81 bottom, four connecting blocks 21 and four spread groove 22 one-to-one, and four connecting blocks 21's inside all seted up with locking screw 20 assorted spiro union hole.

Specifically, when the waste heat recovery assembly is installed, a worker can place the processing box 81 on the installation base 15 to enable the connecting block 21 to be inserted into the connecting groove 22, then the worker can screw the locking screw 20 in the locking screw 20 to enable the locking screw 20 to penetrate through the threaded hole in the connecting block 21 to clamp the connecting block 21 and the connecting groove 22, so that the limiting and fixing between the processing box 81 and the installation base 15 are achieved, the installation of the waste heat recovery assembly is achieved, and the use of the waste heat recovery assembly is facilitated;

in addition, when the waste heat recovery subassembly damaged, the workman can unscrew locking screw 20, and will handle case 81 and upwards stimulate, make connecting block 21 remove along in the spread groove 22, until breaking away from, in order to handle case 81 and mount pad 15 separation, accomplish the dismantlement of waste heat recovery subassembly, then the workman maintains the waste heat recovery subassembly, after the maintenance, the workman again with waste heat recovery subassembly installation on mount pad 15, thereby realize the quick assembly disassembly of waste heat recovery subassembly, so that the maintenance of waste heat recovery subassembly, the effectual maintenance efficiency that improves the waste heat recovery subassembly, can ensure the normal use of waste heat recovery subassembly.

In this embodiment, preferably, the top of the two sides of the inner wall of the furnace body 1 is respectively provided with a temperature sensor 6 and a pressure sensor 7.

Specifically, in the working process of the resistance furnace, the temperature sensor 6 and the pressure sensor 7 respectively detect the temperature and the pressure inside the furnace body 1, so that the temperature inside the furnace body 1 can be accurately controlled, a certain vacuum degree can be kept inside the furnace body 1, and nitriding treatment is facilitated.

In this embodiment, preferably, two baffles 84 are installed inside the treatment tank 81 at the top and the bottom thereof, and the two baffles 84 are respectively located at two sides of the heat conducting pipe 86.

Specifically, when the gas is discharged into the processing box 81, the two flow guiding plates 84 separate the inside of the processing box 81 to block the gas and change the flow direction of the gas, thereby increasing the flow path of the gas, facilitating the heat conduction pipes 86 to recover the waste heat in the gas, and improving the efficiency of the waste heat recovery.

In this embodiment, preferably, an inspection platform 13 is welded to one side of the furnace body 1, and a step 14 is welded to one end of the inspection platform 13.

Specifically, when the resistance furnace damaged, workman's accessible ladder 14 climbed maintenance platform 13, and then the workman can walk on maintenance platform 13 to inspect furnace body 1, thereby the maintenance of the resistance furnace of being convenient for helps improving maintenance efficiency.

In this embodiment, preferably, the bottom of furnace body 1 inner wall both sides all is installed reinforced car and is taken over platform 4, and the inside bottom symmetry of furnace body 1 is provided with two reinforced car guide rails 3, and two reinforced car guide rails 3 are located between two reinforced car and take over platform 4.

Specifically, when the resistance furnace is reinforced, the workman can be with treating during nitriding treatment's raw and other materials are packed into with the skip, again with reinforced the car through adding skip guide rail 3 slip propulsion furnace body 1 for reinforced the car is placed on reinforced car bearing platform 4, realizes the quick feeding of resistance furnace with this, the effectual intensity of labour who reduces the resistance furnace, improves workman's work efficiency.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.

Claims

1. A vacuum resistance furnace for producing and preparing nitriding alloy is characterized in that: comprises a furnace body (1), a furnace cover (18) hinged at one end of the furnace body (1) and a gas treatment mechanism (8) arranged at the top of the furnace body (1), wherein the inner wall of the furnace body (1) is provided with a fireproof heat-insulating layer (2), and the top of the interior of the furnace body (1) is provided with graphite electrodes (5) which are distributed at equal intervals, electrode ends (23) which are distributed at equal intervals are fixed on both sides of the furnace body (1), the top ends of the electrode ends (23) which are distributed at equal intervals are connected with copper conductors (9), the electrode ends (23) at the two sides of the furnace body (1) are respectively connected with the two ends of the graphite electrode (5), and the top end of the furnace body (1) is provided with an air outlet pipe (16) and an air inlet pipe (17), the air outlet pipe (16) is connected with the gas treatment mechanism (8), and the gas treatment mechanism (8) treats and discharges the waste gas input by the gas outlet pipe (16).

2. The vacuum resistance furnace for producing the nitriding alloy according to claim 1, wherein the gas treatment mechanism (8) comprises a waste heat recovery component and a mounting component for fixing the waste heat recovery component and the furnace body (1), the waste heat recovery component comprises a treatment box (81), a heat conduction pipe (86) is mounted inside the treatment box (81), the top end of the treatment box (81) is connected with a water inlet valve (82) and a water drain valve (83), the water inlet valve (82) and the water drain valve (83) are respectively communicated with two ends of the heat conduction pipe (86), and one side of the treatment box (81) is connected with an exhaust pipe (85).

3. The vacuum resistance furnace for producing and preparing the nitriding alloy according to claim 1, further comprising a cooling mechanism, wherein the cooling mechanism is used for cooling the furnace body (1), the copper conductor (9) and the electrode end (23), the cooling mechanism comprises a water inlet pipe (11) and a water outlet pipe (12) which are arranged on one side of the furnace body (1), valves (19) are arranged on the water inlet pipe (11) and the water outlet pipe (12), and a hose (10) is connected between the valves (19) and the electrode end (23).

4. The vacuum resistance furnace for producing nitrided alloys according to claim 2 wherein said mounting assembly comprises:

the furnace body is characterized by comprising a mounting seat (15) arranged on the furnace body (1), wherein four connecting grooves (22) are formed in the mounting seat (15), two locking screws (20) are screwed on two sides of the mounting seat (15), and the four locking screws (20) penetrate through the four connecting grooves (22) respectively;

be fixed in connecting block (21) of handling four corners in case (81) bottom, four connecting block (21) and four spread groove (22) one-to-one, and the inside of four connecting blocks (21) all seted up with locking screw (20) assorted spiro union hole.

5. The vacuum resistance furnace for producing nitrided alloy according to claim 1, wherein the top of both sides of the inner wall of said furnace body (1) is respectively provided with a temperature sensor (6) and a pressure sensor (7).

6. The vacuum resistance furnace for producing nitrided alloys according to claim 2, wherein two baffles (84) are installed inside the processing box (81) at the top and bottom in a staggered manner from end to end, and the two baffles (84) are respectively located at both sides of the heat conducting pipe (86).

7. The vacuum resistance furnace for producing nitrided alloys according to claim 5, wherein an inspection table (13) is welded to one side of the furnace body (1), and a step (14) is welded to one end of the inspection table (13) in an inclined arrangement.

8. The vacuum resistance furnace for producing the nitrided alloy according to claim 7, wherein the charging car receiving platforms (4) are installed at the bottoms of both sides of the inner wall of the furnace body (1), and two charging car guide rails (3) are symmetrically arranged at the bottom inside the furnace body (1), and the two charging car guide rails (3) are positioned between the two charging car receiving platforms (4).