CN210965774U - Negative pressure forming die coating baking oven - Google Patents

Negative pressure forming die coating baking oven Download PDF

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Publication number
CN210965774U
CN210965774U CN201921928990.XU CN201921928990U CN210965774U CN 210965774 U CN210965774 U CN 210965774U CN 201921928990 U CN201921928990 U CN 201921928990U CN 210965774 U CN210965774 U CN 210965774U
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electric heating
pipe
baking oven
negative pressure
heating device
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CN201921928990.XU
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冯中起
张鑫
赵奇
罗凯
刘通权
马应涛
杜军
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DUJIANGYAN RUITAI TECHNOLOGY CO LTD
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DUJIANGYAN RUITAI TECHNOLOGY CO LTD
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

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Abstract

The utility model discloses a negative pressure forming die coating baking oven, which comprises a baking oven body provided with a die accommodating space, and a heating device used for heating the accommodating space, wherein the heating device comprises a circulating water pipe and an electric heating device which are arranged on the inner wall surface of the accommodating space, and a plurality of electric heating devices are arranged; the electric heating means are mounted on a pair of opposite sides of the oven body: of the two sides of the opposite side, each side is provided with an electric heating device; the electric heating device comprises an air pipe, an axial flow fan and an electric heating pipe, wherein the outlet end of the air pipe is connected with the accommodating space, the axial flow fan is installed in the air pipe, and the electric heating pipe is installed at the outlet end of the air pipe. This bake out case's structural design not only usable electric arc furnace's circulating water is used for toasting as the heat source, reduces the extra energy input that the coating toasted, and convenient operation toasts comprehensively simultaneously.

Description

Negative pressure forming die coating baking oven
Technical Field
The utility model relates to a kiln brick manufacturing technology field especially relates to a negative pressure forming die coating toasts case.
Background
The vacuum negative pressure molding process is a technology for molding by sealing and pumping negative pressure of dry sand and plastic films without using a binder, water and other additives, and has the advantages of precise casting size, clear outline, energy conservation, environmental protection and the like. And the process is praised as the casting technology of the twenty-first century and the green revolution of the casting industry by the casting world at home and abroad. However, the casting technology of metal materials such as cast iron and the like and the casting refractory material technology have obvious differences in material composition, temperature and the like, so that a plurality of problems still need to be solved when the vacuum negative pressure forming process is applied to the casting refractory material industry.
In vacuum negative pressure forming, the application of the coating (wrapping on the mold) can have specific effects, such as: in the sand box, the tectorial membrane of parcel in the mould outside can make the molding sand be difficult to the problem of collapsing after the shaping: after the mould is pulled out, the stability of the sand mould can be kept, and the production efficiency and the product percent of pass are facilitated; after the film is coated, the wall surface of the molding sand of the cavity can have higher surface finish, which is beneficial to the product quality. After the coating is finished, the step of spraying the coating is also involved, the performance of the obtained coating is closely related to the surface quality of a casting, the performance of the coating is poor, even the casting sand is caused to contact with air in advance to collapse, molten liquid permeates into the casting sand, the casting sand is burnt, pressure maintaining fails after pouring, and finally the casting is scrapped.
Therefore, aiming at the solidification or drying of the coating, the mold coating baking oven is important equipment in the casting production of the refractory bricks of the kiln. Further optimizing the structural design of the mold paint baking oven so that it can better serve the production of kiln bricks is an important direction that those skilled in the art are exploring.
SUMMERY OF THE UTILITY MODEL
Further optimize mould coating to the structural design who toasts case to above-mentioned proposition to make its can be better serve the production of kiln brick, be the technical problem of the important direction that technical personnel in the field explored, the utility model provides a negative pressure forming mould coating toasts case. This bake out case's structural design not only usable electric arc furnace's circulating water is used for toasting as the heat source, reduces the extra energy input that the coating toasted, and convenient operation toasts comprehensively simultaneously.
The utility model provides a negative pressure forming die coating toasts case solves the problem through following technical essential: the negative pressure forming die coating baking oven comprises a baking oven body and a heating device, wherein a die accommodating space is formed in the baking oven body, the heating device is used for heating the accommodating space, the heating device comprises a circulating water pipe and a plurality of electric heating devices, and the circulating water pipe and the electric heating devices are mounted on the inner wall surface of the accommodating space;
the electric heating means are mounted on a pair of opposite sides of the oven body: of the two sides of the opposite side, each side is provided with an electric heating device;
the electric heating device comprises an air pipe, an axial flow fan and an electric heating pipe, wherein the outlet end of the air pipe is connected with the accommodating space, the axial flow fan is installed in the air pipe, and the electric heating pipe is installed at the outlet end of the air pipe.
The scheme is that when the scheme is specifically applied, the circulating water pipe is used for being connected with a cooling water system of an electric arc furnace, namely the cooling water is used as a fluid in the circulating water pipe, and the fluid is used as a heat source for heating the accommodating space, so that the waste heat of the electric arc furnace can be utilized to bake the mold, the waste heat utilization is realized, and the purpose of reducing extra energy input for baking the coating and even avoiding the extra energy input is achieved; meanwhile, the electric arc furnace can be better protected after the fluid is cooled.
Furthermore, in order to enable the baking power of the baking mould to be adjusted correspondingly and quickly and serve as a specific heat source supplement, the baking mould is arranged to further comprise an electric heating device, when the electric heating device works specifically, air is introduced from the inlet end of the air pipe by the operation of the axial flow fan, the air is sent into the accommodating space through the outlet end of the air pipe, the electric heating pipe is arranged at the outlet end of the air pipe, the air can be heated when flowing through the electric heating pipe which generates heat, the heated hot air enters the accommodating space, and the heat radiation of the electric heating pipe achieves the purpose of baking the mould.
Meanwhile, the method comprises the following steps: the electric heating means are mounted on a pair of opposite sides of the oven body: of the two sides of the opposite sides, each side is provided with an electric heating device, namely a plurality of electric heating devices are arranged on a pair of opposite sides of the baking box body, and when in specific use, the following purposes are realized: after the mold is placed in the accommodating space, if the four side surfaces of the mold are defined to be A, B, C, D (in a clockwise sequence or a counterclockwise sequence), the electric heating device on one side can be started, and if A is over against the outlet end of the electric heating device, the coating on A, B, D, C can be in a hot environment, at the moment, the baking capacity for A is strongest, the baking capacity for B, D times is weakest, and the baking capacity for C is not uniform; then, the electric heating device on the other side is turned on, and at this time, the baking capacity for C is the strongest, for B, D times, and the weakest for a, so that: after the mold is placed into the accommodating space, under the condition of adopting an electric heating device, the A, B, D, C baking can be uniformly performed without adjusting the position of each side of the mold, and the purposes of convenient operation and comprehensive baking are achieved.
As a person skilled in the art, the above electric heating device can be opened only on one side at one time point, or can be opened on both sides at one time point, and for the case of single-side opening, the upper air pipe on the other side can be used as an air exhaust pipe, and for the case of double-side opening, the upper side exhaust, the bottom side exhaust, and the like of the baking oven body can be performed. The mould is preferably placed in a standing manner,
the further technical scheme is as follows:
for making each face to the mould all have comparatively even baking capacity, set up to: circulating water pipes are arranged on each side of the other pair of opposite sides of the baking box body and on the bottom side of the baking box body.
As described above, in order to realize the modes of top side exhaust, bottom side exhaust, etc. of the baking oven body, the modes can be realized and switched as required, the following settings are set: the top of baking oven body still be provided with the entry end with the blast pipe that accommodation space top side meets, all be provided with the shutoff mechanism that is used for controlling respective on-off state on blast pipe and the tuber pipe. This scheme of adoption, still usable blast pipe and tuber pipe realize that waste gas concentrates the emission, if handle through rear end harmful substance, realize doing benefit to the environmental protection.
For making the distribution of the air temperature of each point of the end surface of the outlet end of the air pipe more uniform and obtaining larger heat radiation area, the air pipe is provided with the following components: the electric heating tubes on each electric heating device are all provided with a plurality of electric heating tubes, and the electric heating tubes on each electric heating device are uniformly distributed on the end surface of the outlet end of the air pipe.
For making the tuber pipe can cover bigger area to do benefit to the homogeneity that temperature distribution and air flow in the accommodation space, set up as: and the outlet end of each air pipe is also provided with a bell mouth-shaped exhaust hood, and the large end of each exhaust hood is used as the outlet end of each air pipe. In the vertical placement of the mold, it is preferable that the plurality of electric heaters are provided on the side surfaces on which the electric heaters are provided, and the electric heaters are stacked in the height direction.
As a specific electric heating tube realization mode, the electric heating tube is provided with the following components: the electrothermal tube includes the outer tube and sets up the heating wire in the outer tube as the protection tube, bake out and still be provided with the mounting bracket on the case body, the one end of outer tube is fixed in on the mounting bracket, and the other end slidable supports on the mounting bracket. By adopting the scheme, the reliable restraint on the electric heating tube can be realized, and the use safety of the baking oven is facilitated; meanwhile, the electric heating tube can be freely thermally deformed at different temperatures, and the service life of the baking oven is prolonged.
As a concrete connection mode for conveniently realizing the connection and the disassembly of the outer sleeve, the device is arranged as follows: for each outer sleeve, the mounting rack is provided with two pore channels for restraining the outer sleeve;
different ends of the outer sleeve are arranged in different pore canals in a penetrating way;
one end of the outer sleeve is in threaded connection with two lock nuts, the two lock nuts are used for achieving the fixation, and the other end of the outer sleeve is in clearance fit in the corresponding hole.
For making circulating pipe have bigger heat transfer area or heat radiation area, make simultaneously in the accommodation space because the heat distribution that circulating pipe introduced is more even, avoid circulating pipe to suffer destruction because of thermal stress simultaneously, set up to: the circulating water pipes are multiple and all the circulating water pipes are bent pipes.
In order to enable the circulating water pipe to have a larger heat exchange area or a larger heat radiation area, fins are arranged on the outer wall of the circulating water pipe.
Because toast the case at specific during operation, a large amount of dusts can appear in the accommodation space, for conveniently realizing circulating pipe surface cleaning to make circulating pipe keep good baking capacity for a long time, set up to: circulating pipe can dismantle to be connected on toasting the case body, and circulating pipe is established ties by the multistage pipeline section and forms, and each pipeline section homogeneous phase can be dismantled for toasting the case body.
The utility model discloses following beneficial effect has:
the scheme is that when the scheme is specifically applied, the circulating water pipe is used for being connected with a cooling water system of an electric arc furnace, namely the cooling water is used as a fluid in the circulating water pipe, and the fluid is used as a heat source for heating the accommodating space, so that the waste heat of the electric arc furnace can be utilized to bake the mold, the waste heat utilization is realized, and the purpose of reducing extra energy input for baking the coating and even avoiding the extra energy input is achieved; meanwhile, the electric arc furnace can be better protected after the fluid is cooled.
Furthermore, in order to enable the baking power of the baking mould to be adjusted correspondingly and quickly and serve as a specific heat source supplement, the baking mould is arranged to further comprise an electric heating device, when the electric heating device works specifically, air is introduced from the inlet end of the air pipe by the operation of the axial flow fan, the air is sent into the accommodating space through the outlet end of the air pipe, the electric heating pipe is arranged at the outlet end of the air pipe, the air can be heated when flowing through the electric heating pipe which generates heat, the heated hot air enters the accommodating space, and the heat radiation of the electric heating pipe achieves the purpose of baking the mould.
Meanwhile, the method comprises the following steps: the electric heating means are mounted on a pair of opposite sides of the oven body: of the two sides of the opposite sides, each side is provided with an electric heating device, namely a plurality of electric heating devices are arranged on a pair of opposite sides of the baking box body, and when in specific use, the following purposes are realized: after the mold is placed in the accommodating space, if the four side surfaces of the mold are defined to be A, B, C, D (in a clockwise sequence or a counterclockwise sequence), the electric heating device on one side can be started, and if A is over against the outlet end of the electric heating device, the coating on A, B, D, C can be in a hot environment, at the moment, the baking capacity for A is strongest, the baking capacity for B, D times is weakest, and the baking capacity for C is not uniform; then, the electric heating device on the other side is turned on, and at this time, the baking capacity for C is the strongest, for B, D times, and the weakest for a, so that: after the mold is placed into the accommodating space, under the condition of adopting an electric heating device, the A, B, D, C baking can be uniformly performed without adjusting the position of each side of the mold, and the purposes of convenient operation and comprehensive baking are achieved.
Drawings
Fig. 1 is a schematic structural view of an embodiment of a negative pressure forming die coating baking oven according to the present invention, which is a front sectional view;
fig. 2 is a schematic structural view of an embodiment of the negative pressure forming mold coating baking oven according to the present invention, which is a top view;
fig. 3 is a schematic structural view of a specific embodiment of the negative pressure forming mold paint baking oven according to the present invention, which is a partial schematic view and a front view for reflecting the connection manner of the electric heating tube on the electric heating device, the position of the electric heating tube relative to the air tube, and the specific form of the air tube;
fig. 4 is a schematic structural diagram of a specific embodiment of the negative pressure forming die coating baking oven of the present invention, which is a partial schematic diagram for reflecting a specific setting form of the circulating water pipe.
The reference numbers in the figures are in order: 1. baking oven body, 2, circulating pipe, 3, electrothermal tube, 4, axial fan, 5, shut-off mechanism, 6, exhaust hood, 7, mounting bracket, 8, fin, 9, tuber pipe.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples.
Example 1:
as shown in fig. 1 to 4, the negative pressure forming die coating baking oven comprises a baking oven body 1 provided with a die accommodating space, and a heating device for heating the accommodating space, wherein the heating device comprises a circulating water pipe 2 and a plurality of electric heating devices which are arranged on the inner wall surface of the accommodating space;
the electric heating means are mounted on a pair of opposite sides of the oven body 1: of the two sides of the opposite side, each side is provided with an electric heating device;
the electric heating device comprises an air pipe 9, an axial flow fan 4 and an electric heating pipe 3, wherein the outlet end of the air pipe 9 is connected with the accommodating space, the axial flow fan 4 is installed in the air pipe 9, and the electric heating pipe 3 is installed at the outlet end of the air pipe 9.
The accommodating space is used as an accommodating cavity of the mold to be baked, the heating device comprises an electric heating device and a circulating water pipe 2, when the scheme is specifically applied, the circulating water pipe 2 is used for being connected with a cooling water system of an electric arc furnace, namely, the cooling water is used as a fluid in the circulating water pipe 2, and the fluid is used as a heat source for heating the accommodating space, so that the mold can be baked by utilizing waste heat of the electric arc furnace, the waste heat utilization is realized, and the purpose of reducing extra energy input for baking the coating and even avoiding the extra energy input is achieved; meanwhile, the electric arc furnace can be better protected after the fluid is cooled.
Furthermore, in order to make the baking power adjustment of the present scheme faster and serve as a specific heat source supplement, the baking power adjustment device is further provided with an electric heating device, when the electric heating device works specifically, the axial flow fan 4 works to introduce air from the inlet end of the air pipe 9, the air is sent into the accommodating space through the outlet end of the air pipe 9, because the electric heating pipe 3 is installed at the outlet end of the air pipe 9, the air can be heated when flowing through the electric heating pipe 3 which generates heat, the heated hot air enters the accommodating space, and the heat radiation of the electric heating pipe 3 achieves the purpose of baking the mold.
Meanwhile, the method comprises the following steps: the electric heating means are mounted on a pair of opposite sides of the oven body 1: of the two sides of said opposite sides, on each side, an electric heating device is mounted, i.e. a plurality of electric heating devices are mounted on a pair of opposite sides of the oven body 1, in particular use, aiming to achieve the following aims: after the mold is placed in the accommodating space, if the four side surfaces of the mold are defined to be A, B, C, D (in a clockwise sequence or a counterclockwise sequence), the electric heating device on one side can be started, and if A is over against the outlet end of the electric heating device, the coating on A, B, D, C can be in a hot environment, at the moment, the baking capacity for A is strongest, the baking capacity for B, D times is weakest, and the baking capacity for C is not uniform; then, the electric heating device on the other side is turned on, and at this time, the baking capacity for C is the strongest, for B, D times, and the weakest for a, so that: after the mold is placed into the accommodating space, under the condition of adopting an electric heating device, the A, B, D, C baking can be uniformly performed without adjusting the position of each side of the mold, and the purposes of convenient operation and comprehensive baking are achieved.
As a person skilled in the art, the above electric heating device may be opened only on one side at one time point, or may be opened on both sides at one time point, and for the case of one-side opening, the upper air duct 9 on the other side may be used as an air exhaust duct, and for the case of two-side opening, the top side exhaust, the side exhaust, the bottom side exhaust, etc. of the baking oven body 1 may be used. The mould is preferably placed in a standing manner,
example 2:
as shown in fig. 1 to 4, the present embodiment is further detailed based on embodiment 1:
for making each face to the mould all have comparatively even baking capacity, set up to: and circulating water pipes 2 are arranged on each side of the other pair of opposite sides of the baking box body 1 and on the bottom side of the baking box body 1.
As described above, in order to realize the top side exhaust, the bottom side exhaust, etc. of the baking oven body 1, which can be realized and switched as required, the following are provided: the top of the baking oven body 1 is also provided with an inlet end and an exhaust pipe connected with the top side of the containing space, and the exhaust pipe and the air pipe 9 are both provided with a cut-off mechanism 5 for controlling the respective on-off states. This scheme of adoption, still usable blast pipe and tuber pipe 9 realize that waste gas concentrates the emission, if handle through rear end harmful substance, realize doing benefit to the environmental protection.
For making the air temperature distribution of each point of the end surface of the outlet end of the air pipe 9 more uniform and obtaining larger heat radiation area, the air temperature distribution is set as follows: the electric heating tubes 3 on each electric heating device are all provided with a plurality of electric heating tubes, and the electric heating tubes 3 on each electric heating device are evenly distributed on the end surface of the outlet end of the air duct 9.
In order to make the air duct 9 cover a larger area, so as to be beneficial to the uniformity of temperature distribution and air flow in the accommodating space, the following arrangement is adopted: and the outlet end of each air pipe 9 is also provided with a bell mouth-shaped exhaust hood 6, and the large end of each exhaust hood 6 is used as the outlet end of each air pipe 9. In the vertical placement of the mold, it is preferable that the plurality of electric heaters are provided on the side surfaces on which the electric heaters are provided, and the electric heaters are stacked in the height direction.
As a specific implementation manner of the electric heating tube 3, the following are provided: the electrothermal tube 3 includes the outer tube as the protection tube and sets up the heating wire in the outer tube, bake out and still be provided with mounting bracket 7 on the case body 1, the one end of outer tube is fixed in on mounting bracket 7, and the other end slidable supports on mounting bracket 7. By adopting the scheme, the reliable restraint on the electric heating tube 3 can be realized, and the use safety of the baking oven is facilitated; meanwhile, the electric heating tube 3 can be freely thermally deformed at different temperatures, and the service life of the baking oven is prolonged.
As a concrete connection mode for conveniently realizing the connection and the disassembly of the outer sleeve, the device is arranged as follows: for each outer sleeve, the mounting rack 7 is provided with two pore passages for restraining the outer sleeve;
different ends of the outer sleeve are arranged in different pore canals in a penetrating way;
one end of the outer sleeve is in threaded connection with two lock nuts, the two lock nuts are used for achieving the fixation, and the other end of the outer sleeve is in clearance fit in the corresponding hole.
For make circulating pipe 2 have bigger heat transfer area or heat radiation area, make simultaneously in the accommodation space because the heat distribution of circulating pipe 2 introduction is more even, avoid circulating pipe 2 to suffer destruction because of thermal stress simultaneously, set up to: the circulating water pipes 2 are multiple, and each circulating water pipe 2 is a bent pipe.
For making circulating pipe 2 have bigger heat transfer area or heat radiation area, all install fin 8 on circulating pipe 2's the outer wall.
Because toast the case and at specific during operation, a large amount of dusts can appear in the accommodation space, for conveniently realizing 2 surface cleaning of circulating pipe to make circulating pipe 2 keep good ability of toasting for a long time, set up to: circulating pipe 2 can dismantle and connect on toasting case body 1, and circulating pipe 2 is established ties by the multistage pipeline section and forms, and each pipeline section homogeneous phase can be dismantled for toasting case body 1.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.

Claims (10)

1. The negative pressure forming die coating baking oven comprises a baking oven body (1) provided with a die accommodating space and a heating device for heating the accommodating space, and is characterized in that the heating device comprises a circulating water pipe (2) and a plurality of electric heating devices, wherein the circulating water pipe (2) and the electric heating devices are arranged on the inner wall surface of the accommodating space;
the electric heating means are mounted on a pair of opposite sides of the oven body (1): of the two sides of the opposite side, each side is provided with an electric heating device;
the electric heating device comprises an air pipe (9), an axial flow fan (4) and an electric heating pipe (3), wherein the outlet end of the air pipe (9) is connected with the accommodating space, the axial flow fan (4) is installed in the air pipe (9), and the electric heating pipe (3) is installed at the outlet end of the air pipe (9).
2. The negative pressure forming die paint baking oven according to claim 1, wherein a circulating water pipe (2) is installed on each of the other pair of opposite sides of the baking oven body (1) and on the bottom side of the baking oven body (1).
3. The negative pressure forming die paint baking oven according to claim 1, wherein the top of the baking oven body (1) is further provided with an exhaust pipe with an inlet end connected with the top side of the accommodating space, and the exhaust pipe and the air pipe (9) are provided with a cut-off mechanism (5) for controlling the respective on-off states.
4. The negative pressure forming die paint baking oven according to claim 1, wherein there are a plurality of electric heating tubes (3) on each electric heating device, and the electric heating tubes (3) on each electric heating device are uniformly distributed on the end face of the outlet end of the air duct (9).
5. The negative pressure forming die paint baking oven according to claim 4, wherein the outlet end of each air duct (9) is further provided with a bell-mouth-shaped exhaust hood (6), and the large end of the exhaust hood (6) is used as the outlet end of the air duct (9).
6. The negative pressure forming die paint baking oven according to claim 4, wherein the electric heating tube (3) comprises an outer sleeve as a protection tube and an electric heating wire arranged in the outer sleeve, a mounting rack (7) is further arranged on the baking oven body (1), one end of the outer sleeve is fixed on the mounting rack (7), and the other end of the outer sleeve is slidably supported on the mounting rack (7).
7. The negative pressure forming die paint baking oven according to claim 6, wherein, for each outer sleeve, the mounting rack (7) has two holes for restraining the outer sleeve;
different ends of the outer sleeve are arranged in different pore canals in a penetrating way;
one end of the outer sleeve is in threaded connection with two lock nuts, the two lock nuts are used for achieving the fixation, and the other end of the outer sleeve is in clearance fit in the corresponding hole.
8. The negative pressure forming die paint baking box according to claim 1, wherein the circulating water pipes (2) are multiple, and each circulating water pipe (2) is a bent pipe.
9. The negative pressure forming die paint baking oven according to claim 1, wherein the outer wall of the circulating water pipe (2) is provided with fins (8).
10. The negative pressure forming die paint baking oven according to claim 9, wherein the circulating water pipe (2) is detachably connected to the baking oven body (1), and the circulating water pipe (2) is formed by connecting a plurality of pipe sections in series, each pipe section being detachable with respect to the baking oven body (1).
CN201921928990.XU 2019-11-08 2019-11-08 Negative pressure forming die coating baking oven Active CN210965774U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921928990.XU CN210965774U (en) 2019-11-08 2019-11-08 Negative pressure forming die coating baking oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921928990.XU CN210965774U (en) 2019-11-08 2019-11-08 Negative pressure forming die coating baking oven

Publications (1)

Publication Number Publication Date
CN210965774U true CN210965774U (en) 2020-07-10

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ID=71440794

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Application Number Title Priority Date Filing Date
CN201921928990.XU Active CN210965774U (en) 2019-11-08 2019-11-08 Negative pressure forming die coating baking oven

Country Status (1)

Country Link
CN (1) CN210965774U (en)

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