CN216005989U

CN216005989U - Cooling device of nitriding furnace for heat treatment

Info

Publication number: CN216005989U
Application number: CN202122352699.6U
Authority: CN
Inventors: 王德虎; 史衍忠
Original assignee: Nanjing Fengdong Heat Treatment Engineering Co ltd
Current assignee: Nanjing Fengdong Heat Treatment Engineering Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-03-11
Anticipated expiration: 2031-09-26

Abstract

A cooling device of a nitriding furnace for heat treatment comprises a water tank, a water inlet pipe, a cooling tower, a cooling water pipe network, a water return pipe network and a bridge; the plurality of nitriding furnaces, the water tank and the bridge are arranged on the ground, and the cooling tower is arranged on the bridge; one end of the water inlet pipe extends into the water tank, and the other end of the water inlet pipe is connected with the water inlet of the cooling tower through a water inlet pump; the cooling water pipe network comprises a cooling water main pipe and a plurality of cooling water branch pipes. Heat treatment is with cooling device of nitriding furnace, carry out cyclic utilization to cooling device's water, practiced thrift the water resource, lay cooling tower, cooling water house steward, return water house steward etc. and fix on the crane span structure in nitriding furnace top, practiced thrift the ground space, get rid of the potential safety hazard, will cool off the water pipe and coil the formula setting on the surface of nitriding furnace through a plurality of centre gripping adjusting device, the cooling effect is good, be convenient for maintenance and maintenance, application prospect is extensive.

Description

Cooling device of nitriding furnace for heat treatment

Technical Field

The utility model relates to a nitriding furnace technical field, concretely relates to heat treatment is with cooling device of nitriding furnace.

Background

Nitriding is a common way for improving the surface wear resistance and hardness of metal materials, and is generally carried out by adopting a nitriding furnace, and the nitriding furnace has the characteristics of low treatment temperature, short time and small workpiece deformation. Introducing ammonia gas into a stainless steel vacuum sealing tank in the nitriding furnace, heating to 520 ℃, keeping for a proper time, and obtaining a nitrogen-containing strengthening layer on the surface of the nitriding workpiece according to the requirements of the material of the workpiece and the infiltration layer for 3-90 hours, thereby obtaining high hardness, high wear resistance, high fatigue limit and good wear resistance.

The nitriding furnace is provided with cooling device, and cooling device adopts the cooling water net that distributes on the nitriding furnace oven usually, a plurality of branch pipes of intaking of cooling water net UNICOM and play water branch pipe, and a plurality of branch pipes of intaking gather for the person in charge of intaking, and a plurality of branch pipes of going out gather for the person in charge of that goes out water, and the person in charge of intaking, the outside water net of the person in charge UNICOM of going out water cool off the nitriding furnace through the hydrologic cycle. The cooling device of the nitriding furnace for heat treatment in the prior art has the following problems: 1. after cold water flows through the nitriding furnace needing to be cooled, the temperature rises, and the heated water is discharged from a water outlet pipe and is not recycled; 2. the main pipe for water outlet and the main pipe for water inlet are laid on the ground, and the water discharging scale is not thorough, so that the water discharging scale is not beneficial to the walking of a workshop, potential safety hazards exist, and the maintenance is inconvenient. Therefore, it is necessary to develop a cooling device for a nitriding furnace for heat treatment to solve the above problems.

Chinese patent application No. CN202022415581.9 discloses a nitriding furnace cooling device, which aims to provide a water diversion box, which can buffer the upstream water, so that the water velocity of the water inlet branch pipe is relatively stable, and the problem of recycling the water of the cooling device is not solved.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome not enough above, the utility model aims at providing a cooling device of nitriding furnace for heat treatment, water to cooling device has carried out cyclic utilization, the water resource has been practiced thrift, lay cooling tower, cooling water house steward, return water house steward etc. in the nitriding furnace top and fix on the crane span structure, the ground space has been practiced thrift, get rid of the potential safety hazard, set up the cooling water pipe on the surface of nitriding furnace through a plurality of centre gripping adjusting device coiling, the cooling effect is good, be convenient for maintenance and maintenance, application prospect is extensive.

The technical scheme is as follows: a cooling device of a nitriding furnace for heat treatment comprises a water tank, a water inlet pipe, a cooling tower, a cooling water pipe network, a water return pipe network and a bridge; the plurality of nitriding furnaces, the water tank and the bridge are arranged on the ground, and the cooling tower is arranged on the bridge; one end of the water inlet pipe extends into the water tank, and the other end of the water inlet pipe is connected with the water inlet of the cooling tower through a water inlet pump; the cooling water pipe network comprises a cooling water main pipe and a plurality of cooling water branch pipes, the water return pipe network comprises a water return main pipe and a plurality of water return branch pipes, a water outlet of the cooling tower is connected with one end of the cooling water main pipe, the cooling water main pipe is connected with one end of the cooling water branch pipes, each cooling water branch pipe is arranged on the outer surface of the corresponding nitriding furnace in a winding manner through a plurality of clamping adjusting devices, the cooling water branch pipes are in contact with the outer surface of the nitriding furnace, and the cooling water main pipe and the water return main pipe are arranged above the nitriding furnace and are fixed through a bridge; the other end of each cooling water branch pipe is connected with one end of a corresponding return water branch pipe, the other ends of a plurality of return water branch pipes are connected with a return water main pipe, and one end of the return water main pipe is connected with a water tank through a return water pump; the clamping adjusting device comprises a sleeve, a supporting rod, a pressing block and a locking device, wherein the sleeve is arranged on the outer surface of the nitriding furnace, one end of the supporting rod is sleeved on the sleeve in a sliding mode, the pressing block is hinged to the other end of the supporting rod, and the locking device is used for locking the supporting rod on the sleeve or loosening the supporting rod from the sleeve.

The cooling device of the nitriding furnace for heat treatment has reasonable structural design, and the cooling tower, the cooling water main pipe, the return water main pipe and the like are laid above the nitriding furnace and fixed on the bridge frame, thereby saving the ground space, eliminating the potential safety hazard and facilitating the maintenance; the water of the cooling device is recycled by matching the water inlet pump, the water return pump and the like, so that water resources are saved; the cooling water pipe is coiled on the outer surface of the nitriding furnace through the plurality of clamping adjusting devices, and the cooling water pipe is fully contacted with the outer surface of the nitriding furnace, so that the cooling effect and the cooling efficiency can be improved.

Further, according to the cooling device of the nitriding furnace for heat treatment, the cooling water main pipe and the return water main pipe are respectively provided with the pipeline main valve, each cooling water branch pipe is respectively provided with the pipeline branch valve I, and each return water branch pipe is respectively provided with the pipeline branch valve II.

Furthermore, according to the cooling device of the nitriding furnace for heat treatment, the first sewage discharge outlet is formed in the bottom of the cooling tower and is connected with the first sewage discharge pipe, and the first sewage discharge pipe is provided with the first sewage discharge valve.

Further, according to the cooling device of the nitriding furnace for heat treatment, the side surface of the lower part of the water tank is provided with the second sewage discharge outlet, the second sewage discharge outlet is connected with the second sewage discharge pipe, and the second sewage discharge pipe is provided with the second sewage discharge valve; and a water replenishing port is arranged on the side surface of the upper part of the water tank and is connected with a water replenishing pipe, and a water replenishing valve is arranged on the water replenishing pipe.

Further, foretell cooling device of nitriding furnace for heat treatment, locking device includes locking plate, screw rod, stop nut, it has the through-hole to open on the telescopic side, it has the slotted hole that distributes along length direction to open on the bracing piece, the slotted hole is located to locking plate slidable cover, the one end of screw rod pass behind the through-hole with locking plate threaded connection, stop nut sets up on the screw rod in the telescopic outside.

The cooling water distributing pipe is coiled on the outer surface of the nitriding furnace, the supporting rod is loosened from the sleeve through the locking device (the screw rod is reversely twisted to enable the locking plate not to press the slotted hole, the locking plate and the slotted hole can slide relatively at the moment, the screw rod can be easily pulled through manual operation), the supporting rod is pulled according to the diameter of the cooling water distributing pipe, the total height of the supporting rod and the sleeve corresponds to the diameter of the cooling water distributing pipe, the supporting rod is locked on the sleeve through the locking device (the screw rod is twisted to enable the supporting rod to pull the inner wall of the locking plate to press the slotted hole, and the screw rod is fixed on the sleeve), the cooling water distributing pipe is pressed on the outer surface of the nitriding furnace under the pressing effect of the pressing block, and the cooling water distributing pipe can be tightly attached to the outer surface of the nitriding furnace. When needs take off the cooling water branch pipe from nitriding furnace surface, only need to exert the pulling force along the double-layered mouth direction that briquetting and bracing piece formed to the cooling water branch pipe, can dismantle the cooling water branch pipe from nitriding furnace fast, need not to loosen the bracing piece from the sleeve through locking device at this in-process, the installation with dismantle simple, convenient and swift, easy maintenance.

Furthermore, according to the cooling device of the nitriding furnace for heat treatment, the pressing block is provided with an arc-shaped cutting groove used for being attached to the outer surface of the cooling water pipe.

When the cooling water branch pipe is pressed on the top of the pressing block, the arc-shaped cutting groove is attached to the outer circumferential surface of the cooling water branch pipe, so that the cooling water branch pipe can be clamped on the outer surface of the nitriding furnace more stably.

Furthermore, in the cooling device of the nitriding furnace for heat treatment, a threaded hole is formed in the central position of the locking plate, and the screw rod is in threaded connection with the locking plate through the threaded hole; the screw rod is provided with a handle.

In order to conveniently twist and rotate the screw rod, a handle is arranged on the screw rod.

The utility model has the advantages that: heat treatment is with cooling device of nitriding furnace, structural design is reasonable, has carried out cyclic utilization to cooling device's water, has practiced thrift the water resource, lay cooling tower, cooling water house steward, return water house steward etc. and fix on the crane span structure in the nitriding furnace top, practiced thrift the ground space, get rid of the potential safety hazard, will cool off the moisture pipe and set up on the surface of nitriding furnace through a plurality of centre gripping adjusting device coiling formula, the cooling effect is good, be convenient for maintenance and maintenance, application prospect is extensive.

Drawings

FIG. 1 is a schematic view of the overall structure of a cooling device of a nitriding furnace for heat treatment according to the present invention;

FIG. 2 is a schematic structural diagram of a single nitriding furnace and a cooling water branch pipe of the cooling device of the nitriding furnace for heat treatment according to the present invention;

FIG. 3 is an enlarged schematic view of the cooling apparatus of the nitriding furnace for heat treatment according to the present invention at the A position in FIG. 2;

FIG. 4 is a schematic view of the structure of the clamping and adjusting device of the cooling device of the nitriding furnace for heat treatment according to the present invention, which is shown in the enlarged view at A of FIG. 2

In the figure: the device comprises a water tank 1, a second sewage discharge outlet 11, a second sewage discharge pipe 12, a second sewage discharge valve 13, a water replenishing port 14, a water replenishing pipe 15, a water replenishing valve 16, a water inlet pipe 2, a water inlet pump 21, a cooling tower 3, a first sewage discharge outlet 31, a first sewage discharge pipe 32, a first sewage discharge valve 33, a cooling water pipe network 4, a cooling water main pipe 41, a cooling water branch pipe 42, a first pipeline branch valve 421, a main pipeline valve 43, a water return pipe network 5, a water return main pipe 51, a water return branch pipe 52, a second pipeline branch valve 521, a water pump 53, a bridge frame 6, a nitriding furnace 7, a clamping and adjusting device 71, a sleeve 711, a supporting rod 712, a slotted hole 7121, a pressing block 713, an arc-shaped cutting groove 7131, a locking device 714, a locking plate 7141, a screw 7142, a limiting nut 7143 and a handle 7144.

Detailed Description

The invention will be further elucidated with reference to the accompanying figures 1-4 and the specific embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The cooling device of the nitriding furnace for heat treatment with the structure shown in fig. 1-4 comprises a water tank 1, a water inlet pipe 2, a cooling tower 3, a cooling water pipe network 4, a water return pipe network 5 and a bridge frame 6; the nitriding furnaces 7, the water tank 1 and the bridge frame 6 are all arranged on the ground, and the cooling tower 3 is arranged on the bridge frame 6; one end of the water inlet pipe 2 extends into the water tank 1, and the other end of the water inlet pipe is connected with a water inlet of the cooling tower 5 through a water inlet pump 21; the cooling water pipe network 4 comprises a cooling water main pipe 41 and a plurality of cooling water branch pipes 42, the water return pipe network 5 comprises a water return main pipe 51 and a plurality of water return branch pipes 52, a water outlet of the cooling tower 5 is connected with one end of the cooling water main pipe 41, the cooling water main pipe 41 is connected with one end of the plurality of cooling water branch pipes 42, each cooling water branch pipe 42 is arranged on the outer surface of the corresponding nitriding furnace 7 in a winding manner through a plurality of clamping adjusting devices 71, the cooling water branch pipes 42 are in contact with the outer surface of the nitriding furnace 7, and the cooling water main pipe 41 and the water return main pipe 51 are arranged above the nitriding furnace 7 and are fixed through a bridge frame 6; the other end of each cooling water branch pipe 42 is connected with one end of a corresponding water return branch pipe 52, the other ends of a plurality of water return branch pipes 52 are connected with a water return main pipe 51, and one end of the water return main pipe 51 is connected with the water tank 1 through a water return pump 53; the clamping adjusting device 71 comprises a sleeve 711, a support rod 712, a pressing block 713 and a locking device 714, wherein the sleeve 711 is arranged on the outer surface of the nitriding furnace 7, one end of the support rod 712 is slidably sleeved on the sleeve 711, the pressing block 713 is hinged with the other end of the support rod 712, and the locking device 714 is used for locking the support rod 712 on the sleeve 711 or loosening the support rod 712 from the sleeve 711.

In addition, the cooling water main pipe 41 and the return water main pipe 51 are both provided with a pipeline main valve 43, each cooling water branch pipe 42 is provided with a pipeline branch valve one 421, and each return water branch pipe 52 is provided with a pipeline branch valve two 521.

In addition, the bottom of the cooling tower 3 is provided with a first sewage draining outlet 31, the first sewage draining outlet 31 is connected with a first sewage draining pipe 32, and a first sewage draining valve 33 is arranged on the first sewage draining pipe 32.

In addition, a second sewage discharge outlet 11 is arranged on the side surface of the lower part of the water tank 1, the second sewage discharge outlet 11 is connected with a second sewage discharge pipe 12, and a second sewage discharge valve 13 is arranged on the second sewage discharge pipe 12; a water replenishing port 14 is arranged on the side face of the upper part of the water tank 1, the water replenishing port 14 is connected with a water replenishing pipe 15, and a water replenishing valve 16 is arranged on the water replenishing pipe 15.

Further, locking device 714 includes locking plate 7141, screw rod 7142, stop nut 7143, it has the through-hole to open on the side of

sleeve

711, 712 opens the slotted hole 7121 that has distributed along length direction on the bracing piece, locking plate 7141 slidable cover is located in slotted hole 7121, screw rod 7142's one end pass behind the through-hole with locking plate 7141 threaded connection, stop nut 7143 sets up on the screw rod 7142 in the outside of sleeve 711.

Further, the pressing block 713 is provided with an arc-shaped cutting groove 7131 for attaching to the outer surface of the cooling water distribution pipe 42.

Furthermore, a threaded hole is formed in the center of the locking plate 7141, and the screw 7142 is in threaded connection with the locking plate 7141 through the threaded hole; a handle 7144 is arranged on the screw 7142.

Examples

Based on the above structure, as shown in FIGS. 1 to 4.

The cooling device of the nitriding furnace for heat treatment has reasonable structural design, and the cooling tower 3, the cooling water main pipe 41, the return water main pipe 41 and the like are laid above the nitriding furnace 7 and fixed on the bridge frame 6, thereby saving the ground space, eliminating the potential safety hazard and facilitating the maintenance; the water of the cooling device is recycled by matching the water inlet pump 21 with the water return pump 53 and the like, so that water resources are saved; the cooling water branch pipe 42 is arranged on the outer surface of the nitriding furnace 7 in a winding manner through a plurality of clamping adjusting devices 71, and the cooling water branch pipe 42 is fully contacted with the outer surface of the nitriding furnace 7, so that the cooling effect and the cooling efficiency can be improved.

Wherein, the cooling water pipe 42 is coiled on the outer surface of the nitriding furnace 7, the support rod is firstly loosened from the sleeve 711 by the locking device 714 (the screw 7142 is reversely screwed to prevent the locking plate 7141 from pressing against the slotted hole 7121, the locking plate 7142 and the slotted hole 7121 can relatively slide at the moment, and the screw 7142 can be easily pulled manually), then, the support rod 712 is pulled according to the diameter of the cooling water distribution pipe 42, so that the total height of the support rod 712 and the sleeve 711 corresponds to the diameter of the cooling water distribution pipe 42, then the supporting rod 712 is locked to the sleeve 711 by the locking device 714 (when the screw 7142 is screwed, the screw 7142 pulls the locking plate 7141 to press against the inner wall of the slot 7121, thereby fixing the screw 7142 to the sleeve 711), the cooling water distribution pipe 42 is pressed against the outer surface of the nitriding furnace 7 by the pressing action of the pressing block 713, and the cooling water distribution pipe 42 is allowed to abut against the outer surface of the nitriding furnace 7. When the cooling water branch pipe 42 needs to be taken down from the outer surface of the nitriding furnace 7, the cooling water branch pipe 42 can be quickly dismounted from the nitriding furnace only by applying a pulling force along the direction of the clamping opening formed by the pressing block 713 and the supporting rod 712 to the cooling water branch pipe 42, the supporting rod 712 does not need to be loosened from the sleeve 711 through a locking device in the process, and the mounting and dismounting are simple, convenient and fast, and the maintenance is convenient.

Further, when the pressing block 713 presses the cooling water branch pipe 42, the arc-shaped cutting groove 7131 is attached to the outer circumferential surface of the cooling water branch pipe 42, so that the cooling water branch pipe 42 can be more firmly clamped on the outer surface of the nitriding furnace 7.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.

In addition, the embodiments of the present invention can be arbitrarily combined with each other, and the same shall be regarded as the disclosure of the present invention as long as the idea of the present invention is not violated.

Claims

1. A cooling device of a nitriding furnace for heat treatment is characterized by comprising a water tank (1), a water inlet pipe (2), a cooling tower (3), a cooling water pipe network (4), a water return pipe network (5) and a bridge (6); the nitriding furnaces (7), the water tank (1) and the bridge (6) are all arranged on the ground, and the cooling tower (3) is arranged on the bridge (6); one end of the water inlet pipe (2) extends into the water tank (1) and the other end of the water inlet pipe is connected with a water inlet of the cooling tower (3) through a water inlet pump (21); the cooling water pipe network (4) comprises a cooling water main pipe (41) and a plurality of cooling water branch pipes (42), the water return pipe network (5) comprises a water return main pipe (51) and a plurality of water return branch pipes (52), a water outlet of the cooling tower (3) is connected with one end of the cooling water main pipe (41), the cooling water main pipe (41) is connected with one end of the plurality of cooling water branch pipes (42), each cooling water branch pipe (42) is arranged on the outer surface of the corresponding nitriding furnace (7) in a winding manner through a plurality of clamping adjusting devices (71), the cooling water branch pipes (42) are in contact with the outer surface of the nitriding furnace (7), and the cooling water main pipe (41) and the water return main pipe (51) are arranged above the nitriding furnace (7) and are fixed through a bridge (6); the other end of each cooling water branch pipe (42) is connected with one end of a corresponding water return branch pipe (52), the other ends of a plurality of water return branch pipes (52) are connected with a water return main pipe (51), and one end of the water return main pipe (51) is connected with a water tank (1) through a water return pump (53); the clamping adjusting device (71) comprises a sleeve (711), a supporting rod (712), a pressing block (713) and a locking device (714), the sleeve (711) is arranged on the outer surface of the nitriding furnace (7), one end of the supporting rod (712) is slidably sleeved on the sleeve (711), the pressing block (713) is hinged to the other end of the supporting rod (712), and the locking device (714) is used for locking the supporting rod (712) on the sleeve (711) or loosening the supporting rod (712) from the sleeve (711).

2. The cooling device of the nitriding furnace for heat treatment according to claim 1, wherein a main pipe valve (43) is arranged on each of the cooling water main pipe (41) and the return water main pipe (51), a first branch pipe valve (421) is arranged on each of the cooling water branch pipes (42), and a second branch pipe valve (521) is arranged on each of the return water branch pipes (52).

3. The cooling device of the nitriding furnace for heat treatment according to claim 1, wherein the bottom of the cooling tower (3) is provided with a first sewage draining outlet (31), the first sewage draining outlet (31) is connected with a first sewage draining pipe (32), and the first sewage draining pipe (32) is provided with a first sewage draining valve (33).

4. The cooling device of the nitriding furnace for heat treatment according to claim 1, wherein a second sewage discharge outlet (11) is formed in the side surface of the lower portion of the water tank (1), the second sewage discharge outlet (11) is connected with a second sewage discharge pipe (12), and a second sewage discharge valve (13) is arranged on the second sewage discharge pipe (12); the water tank is characterized in that a water replenishing port (14) is formed in the side face of the upper portion of the water tank (1), the water replenishing port (14) is connected with a water replenishing pipe (15), and a water replenishing valve (16) is arranged on the water replenishing pipe (15).

5. The cooling device of the nitriding furnace for heat treatment according to claim 1, wherein the locking device (714) comprises a locking plate (7141), a screw rod (7142) and a limit nut (7143), the side surface of the sleeve (711) is provided with a through hole, the support rod (712) is provided with a slotted hole (7121) distributed along the length direction, the locking plate (7141) is slidably sleeved in the slotted hole (7121), one end of the screw rod (7142) passes through the through hole and then is in threaded connection with the locking plate (7141), and the limit nut (7143) is arranged on the screw rod (7142) outside the sleeve (711).

6. The cooling apparatus for a heat treatment nitriding furnace according to claim 1, wherein the compact (713) is provided with an arc-shaped cut groove (7131) for attaching to an outer surface of the cooling water distributing pipe (42).

7. The cooling device of the nitriding furnace for heat treatment according to claim 5, wherein the locking plate (7141) is provided with a threaded hole at the center, and the screw rod (7142) is in threaded connection with the locking plate (7141) through the threaded hole; the screw rod (7142) is provided with a handle (7144).