CN215295785U

CN215295785U - Graphite sealing box of vacuum degreasing and pouring integrated furnace

Info

Publication number: CN215295785U
Application number: CN202121292814.9U
Authority: CN
Inventors: 洪庆坤
Original assignee: Hunan Kingtech Co ltd
Current assignee: Hunan Kingtech Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-12-24
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses a vacuum degreasing and concreting integrated furnace graphite seal box, the left and right sides including the graphite box is provided with head apron and afterbody apron respectively, and opens the head inlet port that has evenly distributed on the head apron, opens the afterbody inlet port that has evenly distributed on the afterbody apron, the both sides inner wall fixed mounting has the year thing board that the equidistance distributes around the graphite box. The utility model discloses new structure has increased the middle part inlet port, respectively from the head inlet port, let in inside gaseous entering graphite box from middle part inlet port and afterbody inlet port, can guarantee the head, each piece of tail and middle every layer all has even gas flow to flow through on carrying the thing board, with the stability of guaranteeing product quality, it only has the two first admitting air to have solved traditional integrative stove of courage sintering, can cause the product degreasing of middle part incomplete, and then cause the different position product size inconsistences of product of same stove, the inconsistent problem of carbon content of product.

Description

Graphite sealing box of vacuum degreasing and pouring integrated furnace

Technical Field

The utility model relates to a vacuum degreasing technical field especially relates to vacuum degreasing and concreting integrative stove graphite seal box.

Background

The traditional vacuum degreasing sintering furnace comprises the following steps: after the furnace is filled with the product, the furnace is vacuumized firstly (because the graphite piece in the furnace can be oxidized at high temperature, the graphite piece needs to be heated under vacuum and protective atmosphere), so that a certain negative pressure is achieved in the furnace, the vacuumizing process is finished, and the degreasing process is started. And then, heating is started, vacuumizing and protective gas is filled while heating is carried out, so that the pressure outside the material box in the furnace is greater than the pressure inside the material box, the airflow is enabled to flow in a single direction, the gas enters the material box from a gap of a door plate of the material box, after a certain pressure is reached, an air inlet valve on the material box is automatically opened, and the gas outside the material box enters the material box. At about 200-500 ℃, the binder in the product is slowly gasified, the carrier gas (gas entering from the outside of the bin) enters the pipeline grease trap device through the degreasing pipe, the carrier gas continuously takes away the binder vapor, the temperature is raised to about 600 ℃, after the temperature is kept for a certain time, the degreasing process is finished, and the sintering process is carried out. And pumping out the gas in the furnace by a vacuum pump, maintaining the set pressure in the furnace, starting to fill gas with a certain flow rate, ensuring a certain pressure difference between the inside and the outside of the material box, continuously heating to the sintering temperature of the product, generally about 1300 ℃ (according to the sintering temperature of the product material), preserving the temperature for a certain time, finishing the sintering process, and entering a cooling process. The cooling starts to be naturally cooled from 1300 ℃ to about 900 ℃, then the fan is started, the upper cover of the material box is opened, the pressure inside and outside the material box is balanced, the gas circularly flows, the temperature of the gas is reduced after passing through the cooler, the gas is conveyed to the front door by the impeller, flows through the material box and flows to the cooler, the gas is circularly and continuously subjected to heat exchange to accelerate the cooling until the temperature in the furnace reaches the room temperature, the fan is stopped, the cooling process is finished, the upper cover of the material box is closed, and the product can be discharged.

In the traditional gallbladder-removing and sintering integrated furnace, a graphite plate of a graphite sealing box is a whole plate, or small air inlet holes are formed in sealing plates at two ends of the graphite box. However, for the vacuum sintering integrated furnace added to the three-plate loading plate, only two ends of the furnace are charged with air, so that incomplete degreasing of the product at the middle part can be caused, and further, the problems that the sizes of the products at different parts of the product in the same furnace are inconsistent and the carbon content of the product is inconsistent are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a graphite sealing box of a vacuum degreasing and pouring integrated furnace.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

vacuum degreasing and pouring integrated furnace graphite seal box, including the graphite box, the left and right sides of graphite box is provided with head apron and afterbody apron respectively, and opens the head inlet port that has evenly distributed on the head apron, opens the afterbody inlet port that has evenly distributed on the afterbody apron, the both sides inner wall fixed mounting has the year thing board that the equidistance distributes around the graphite box, and both sides are located to carry around the graphite box and open the middle part inlet port that has evenly distributed between the thing board, both sides outer wall all is fixed with middle apron around the graphite box.

Preferably, the outer walls of the front side and the rear side of the graphite box body are fixed with symmetrically distributed hooks near the middle part, and the arc-shaped inner walls of the hooks are provided with limiting rods.

Preferably, the outer wall of the top of the graphite box body is provided with two safety valves with the same size.

Preferably, the outer wall of the bottom of the graphite box body is provided with an air exhaust hole, and the bottom end of the air exhaust hole is fixedly connected with an air exhaust pipe.

Compared with the prior art, the utility model provides a vacuum degreasing and concreting integrative stove graphite seal box possesses following beneficial effect:

through the middle air inlet hole that sets up, respectively from the head inlet hole, let in gas from middle part inlet hole and afterbody inlet hole and get into graphite box inside, can guarantee that the head, tail and each piece of year thing board of every layer in the middle all have even gas to flow through to guarantee the stability of product quality, solved traditional taking off the air inlet of courage sintering integrative stove only two, can cause the product of middle part to degrease incompletely, and then cause the different position product size inconsistence of the product of same stove, the inconsistent problem of the carbon content of product.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model has the advantages of simple and compact overall structure, the product processing degrease is more complete, the product size at different positions is unanimous, and safety and stability nature is good.

Drawings

FIG. 1 is a schematic view of the overall structure of a graphite sealing box of a vacuum degreasing and sintering integrated furnace provided by the present invention;

FIG. 2 is a schematic view of the bottom structure of the graphite sealing box of the vacuum degreasing and sintering integrated furnace of the present invention;

fig. 3 is the schematic view of the cross-sectional structure of the graphite sealing box of the vacuum degreasing and pouring integrated furnace.

In the figure: 1-head cover plate, 2-head air inlet, 3-middle air inlet, 4-exhaust pipe, 5-exhaust hole, 6-tail air inlet, 7-tail cover plate, 8-safety valve, 9-graphite box body, 10-carrying plate, 11-hook, 12-limiting rod and 13-middle cover plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

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.

Referring to fig. 1-3, a graphite sealing box of a vacuum degreasing and pouring integrated furnace comprises a graphite box body 9, wherein a head cover plate 1 and a tail cover plate 7 are respectively arranged at the left side and the right side of the graphite box body 9, head air inlet holes 2 are uniformly distributed on the head cover plate 1, tail air inlet holes 6 are uniformly distributed on the tail cover plate 7, carrying plates 10 are fixedly arranged on the inner walls of the front side and the rear side of the graphite box body 9 at equal intervals, middle air inlet holes 3 are uniformly distributed between the carrying plates 10 at the front side and the rear side of the graphite box body 9, middle cover plates 13 are respectively fixed on the outer walls of the front side and the rear side of the graphite box body 9, and air is respectively introduced from the head air inlet holes 2, the middle air inlet holes 3 and the tail air inlet holes 6 to enter the inside of the graphite box body 9, so that uniform air flows through each carrying plate 10 of each layer in the head, the tail and the middle can be ensured, and the stability of the product quality can be ensured, the problem of traditional take off the integrative stove of courage sintering only have the air intake at two ends, can cause the product degreasing of middle part incomplete, and then cause the different position product size of the product of same stove inconsistent, the carbon content of product is inconsistent is solved.

The utility model discloses in, the couple 11 that the both sides outer wall is fixed with symmetric distribution near the middle part around the graphite box 9, and couple 11 arc inner walls are provided with gag lever post 12.

The utility model discloses in, the top outer wall of graphite box 9 is provided with two relief valves 8 that the size is the same.

The utility model discloses in, the bottom outer wall of graphite box 9 is opened there is aspirating hole 5, and the bottom fixedly connected with exhaust tube 4 of aspirating hole 5.

The working principle is as follows: during the use, new structure has increased middle part inlet port 3, let in gas from intake pipe 10, gas gets into in the breather pipe 15 through communicating pipe 9, get into inside the graphite box 6 from middle part inlet port 19, open the admission valve 1 of head and afterbody, can guarantee that the head, tail and middle each piece of year thing board 18 on all have even gas to flow through, with the stability of guaranteeing product quality, the traditional integrative stove of the courage sintering of taking off has the air admission of two ends only, can cause the product degrease incomplete at middle part, and then cause the different position product size inconsistence of the product of same stove, the inconsistent problem of the carbon content of product.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Vacuum degreasing and pouring integrated furnace graphite seal box, including graphite box (9), its characterized in that, the left and right sides of graphite box (9) is provided with head apron (1) and afterbody apron (7) respectively, and opens head inlet port (2) that have evenly distributed on head apron (1), opens evenly distributed's afterbody inlet port (6) on afterbody apron (7), both sides inner wall fixed mounting has the year thing board (10) that the equidistance distributes around graphite box (9), and both sides are located to open between year thing board (10) middle part inlet port (3) that have evenly distributed around graphite box (9), both sides outer wall all is fixed with middle apron (13) around graphite box (9).

2. The graphite sealing box of the vacuum degreasing and pouring integrated furnace as claimed in claim 1, wherein the outer walls of the front side and the rear side of the graphite box body (9) are fixed with symmetrically distributed hooks (11) near the middle, and the arc-shaped inner walls of the hooks (11) are provided with limit rods (12).

3. The graphite sealing box of the vacuum degreasing and casting integrated furnace of claim 2, wherein the outer wall of the top of the graphite box body (9) is provided with two safety valves (8) with the same size.

4. The graphite sealing box of the vacuum degreasing and casting integrated furnace according to claim 1, wherein an air exhaust hole (5) is formed in the outer wall of the bottom of the graphite box body (9), and an air exhaust pipe (4) is fixedly connected to the bottom end of the air exhaust hole (5).