阅读说明：本技术 脱蜡装置 (Dewaxing device ) 是由 温学信 于 2020-12-31 设计创作，主要内容包括：本发明提供了一种脱蜡装置,涉及脱蜡铸造工艺技术领域,解决了现有技术中存在的热水法脱蜡耗费的电能比较大,浪费的水资源比较多的技术问题。该装置包括脱蜡炉、脱蜡车和储蜡罐,其中,脱蜡炉包括预热区、加热区和保温区,预热区、加热区和保温区依次排列,脱蜡炉与脱蜡车配合连接且脱蜡车能在脱蜡炉内移动,脱蜡车依次通过预热区、加热区和保温区,储蜡罐位于脱蜡炉的下方且脱蜡炉与储蜡罐通过流蜡管道相连通；脱蜡模壳放置在脱蜡车上,脱蜡车移动至加热区后,加热区能对脱蜡模壳加热并熔化成蜡液,蜡液能从脱蜡车内,流经脱蜡炉并流入到储蜡罐内。本发明用于给脱蜡模壳脱蜡。(The invention provides a dewaxing device, relates to the technical field of dewaxing casting processes, and solves the technical problems that in the prior art, a hot water method is high in power consumption and water resources are wasted. The device comprises a dewaxing furnace, a dewaxing trolley and a wax storage tank, wherein the dewaxing furnace comprises a preheating zone, a heating zone and a heat preservation zone which are sequentially arranged, the dewaxing furnace is connected with the dewaxing trolley in a matching manner, the dewaxing trolley can move in the dewaxing furnace, the dewaxing trolley sequentially passes through the preheating zone, the heating zone and the heat preservation zone, the wax storage tank is positioned below the dewaxing furnace, and the dewaxing furnace and the wax storage tank are communicated through a wax flowing pipeline; the dewaxing mould shell is placed on a dewaxing vehicle, after the dewaxing vehicle moves to a heating zone, the heating zone can heat the dewaxing mould shell and melt the dewaxing mould shell into wax liquid, and the wax liquid can flow from the dewaxing vehicle, through a dewaxing furnace and into a wax storage tank. The invention is used for dewaxing a dewaxing mould shell.)

1. A dewaxing device is characterized by comprising a dewaxing furnace (1), a dewaxing vehicle (2) and a wax storage tank (3),

the dewaxing furnace (1) comprises a preheating zone (11), a heating zone (12) and a heat preservation zone (13), the preheating zone (11), the heating zone (12) and the heat preservation zone (13) are sequentially arranged, the dewaxing furnace (1) is connected with the dewaxing vehicle (2) in a matching mode, the dewaxing vehicle (2) can move in the dewaxing furnace (1), the dewaxing vehicle (2) sequentially passes through the preheating zone (11), the heating zone (12) and the heat preservation zone (13), the wax storage tank (3) is located below the dewaxing furnace (1), and the dewaxing furnace (1) is communicated with the wax storage tank (3) through a wax flowing pipeline (4);

the dewaxing mould shell is placed on the dewaxing trolley (2), after the dewaxing trolley (2) moves to the heating zone (12), the heating zone (12) can heat the dewaxing mould shell and melt the dewaxing mould shell into wax liquid, and the wax liquid can flow through the dewaxing furnace (1) from the dewaxing trolley (2) and flow into the wax storage tank (3).

2. Dewaxing apparatus according to claim 1, wherein a heater is arranged in the dewaxing furnace (1), said heater being located in the heating zone (12), and a controller is arranged outside the dewaxing furnace (1), said heater being electrically connected to said controller and said controller being capable of adjusting the heating temperature of said heater.

3. The dewaxing apparatus according to claim 1, wherein a wax receiving slot (14) is formed in the bottom of the dewaxing furnace (1), the wax receiving slot (14) is communicated with the wax storage tank (3) through the wax flowing pipeline (4), and the wax liquid in the dewaxing vehicle (2) can flow into the wax receiving slot (14) through a wax discharging pipeline (5).

4. Dewaxing apparatus according to claim 1, wherein the dewaxing vehicle (2) comprises a dewaxing basket (21) and a wax receiving pan (22), the dewaxing basket (21) is located above the wax receiving pan (22) and the dewaxing basket (21) is detachably placed on the wax receiving pan (22), the dewaxing mould is placed on the dewaxing basket (21), the dewaxing basket (21) is in communication with the wax receiving pan (22), the wax receiving pan (22) is fitted to the dewaxing furnace (1) and the wax receiving pan (22) is movable within the dewaxing furnace (1).

5. Dewaxing unit according to claim 4, wherein said dewaxing truck (2) further comprises a heat insulation plate (23), said heat insulation plate (23) being connected to the side of said wax receiving vessel (22), said heat insulation plate (23) being used for insulating heat from the preceding dewaxing truck (2) or for insulating the temperature outside said dewaxing furnace (1).

6. Dewaxing device according to claim 4, wherein the bottom of the dewaxing basket (21) is provided with wax flow openings (211).

7. Dewaxing device according to claim 4, wherein the wax receiving vessel (22) comprises an inner layer and an outer layer, a water storage space is provided between the inner layer and the outer layer, and cold water is placed in the water storage space.

8. A dewaxing unit according to claim 4, wherein the upper half of said dewaxing furnace (1) is a high temperature zone (15), the lower half of said dewaxing furnace (1) is a low temperature zone (16), said dewaxing basket (21) is located in said high temperature zone (15), and said wax receiving vessel (22) is located in said low temperature zone (16).

9. Dewaxing apparatus according to claim 1, further comprising a lifting device capable of transporting the dewaxing trolley (2) at the outlet of the dewaxing furnace (1) to the inlet of the dewaxing furnace (1).

10. Dewaxing apparatus according to claim 1, wherein said dewaxing furnace (1) is provided with a view gate (17).

Technical Field

The invention relates to the technical field of dewaxing casting processes, in particular to a dewaxing device.

Background

In the precision casting process of over seventy years in China, dewaxing is usually carried out by a hot water method in the dewaxing process. The dewaxing process includes heating water to boiling point (96 deg.c), hoisting the dewaxing mold casing and dewaxing basket into hot water to melt paraffin slowly, and floating on water surface for dewaxing in 2-4 hr. In the process of dewaxing by using a hot water method, water needs to be heated to a boiling point, and as more water is used, the consumption of electric energy is higher in the heating process, and heat energy is wasted; the dewaxing speed is slow, the specific heat of the mould shell is large, and the heat transfer is slow; sand needs to be added into the shell, and when casting is carried out after dewaxing, sand cleaning and repair welding are needed to the casting, so that the maintenance cost is increased; the roasting cost of the formwork is increased, the formwork is soaked in water to absorb enough moisture (2-2.5 times of the weight of the formwork), the moisture is evaporated and vaporized firstly during roasting, then the formwork can be burnt to be molten, the heat energy consumed by evaporation and vaporization is very much, the roasting time of workers is prolonged due to too much moisture of the formwork, the roasting quality of some shells is poor sometimes, air holes are generated in external air of a cast after casting, and the maintenance workload is increased due to sand holes and air holes of the cast; in the dewaxing process of the water glass shell, 5-8% of ammonium chloride is required to be added into water to be used as a hardening agent (otherwise, the shell is boiled), ammonium chloride is hydrolyzed in hot water to escape ammonium hydroxide, the ammonia smell is sufficient, a workshop and air are polluted, and equipment is corroded; the hot water dewaxing is only suitable for the production of low-temperature mould material (paraffin wax is 56 ℃ to 64 ℃), and the efficiency of medium-temperature mould material (about 90 ℃) is worse.

Disclosure of Invention

The invention aims to provide a dewaxing device to solve the technical problems that in the prior art, the hot water dewaxing method consumes more electric energy and wastes more water resources. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a dewaxing device, which comprises a dewaxing furnace, a dewaxing trolley and a wax storage tank, wherein the dewaxing furnace comprises a preheating zone, a heating zone and a heat preservation zone, the preheating zone, the heating zone and the heat preservation zone are sequentially arranged, the dewaxing furnace is connected with the dewaxing trolley in a matching way, the dewaxing trolley can move in the dewaxing furnace, the dewaxing trolley sequentially passes through the preheating zone, the heating zone and the heat preservation zone, the wax storage tank is positioned below the dewaxing furnace, and the dewaxing furnace is communicated with the wax storage tank through a wax flowing pipeline;

the dewaxing mould shell is placed on the dewaxing vehicle, after the dewaxing vehicle moves to the heating zone, the heating zone can heat the dewaxing mould shell and melt the dewaxing mould shell into wax liquid, and the wax liquid can flow through the dewaxing furnace from the dewaxing vehicle and flow into the wax storage tank.

Optionally, a heater and a controller are arranged in the dewaxing furnace, the heater is located in the heating zone, the controller is located outside the dewaxing furnace, the heater is electrically connected with the controller, and the controller can adjust the heating temperature of the heater.

Optionally, a wax receiving notch is formed in the bottom of the dewaxing furnace, the wax receiving notch is communicated with the wax storage tank through the wax flowing pipeline, and the wax liquid in the dewaxing vehicle can flow into the wax receiving notch through the wax discharging pipeline.

Optionally, the dewaxing vehicle includes a dewaxing basket and a wax receiving pan, the dewaxing basket is located above the wax receiving pan and is detachably placed on the wax receiving pan, the dewaxing mold shell is placed on the dewaxing basket, the dewaxing basket is communicated with the wax receiving pan, the wax receiving pan is matched with the dewaxing furnace, and the wax receiving pan is movable in the dewaxing furnace.

Optionally, the dewaxing vehicle further comprises a heat insulation plate, the heat insulation plate is connected with the side surface of the wax receiving vessel, and the heat insulation plate is used for insulating heat of the previous dewaxing vehicle or insulating temperature outside the dewaxing furnace.

Optionally, the bottom of the dewaxing basket is provided with a wax flowing port.

Optionally, the wax receiving vessel comprises an inner layer and an outer layer, a water storage space is arranged between the inner layer and the outer layer, and cold water is placed in the water storage space.

Optionally, the upper half area of the dewaxing furnace is a high temperature area, the lower half area of the dewaxing furnace is a low temperature area, the dewaxing basket is located in the high temperature area, and the wax receiving vessel is located in the low temperature area.

Optionally, the device further comprises a hoisting device, wherein the hoisting device can convey the dewaxing vehicle positioned at the outlet of the dewaxing furnace to the inlet of the dewaxing furnace.

Optionally, an observation door is arranged on the dewaxing furnace.

According to the dewaxing device provided by the invention, the dewaxing furnace heats the heating zone through the heater, when the dewaxing vehicle moves to the heating zone, the heat in the heating zone can heat the dewaxing mould shell on the dewaxing vehicle, the dewaxing mould shell can be melted into wax liquid after being heated for a period of time, the wax liquid can flow through the bottom of the dewaxing furnace through the dewaxing vehicle and finally flows into the wax storage tank, the dewaxing device consumes less electric energy, does not need to heat water, does not need to heat the dewaxing mould shell with hot water, saves water resources, and solves the technical problems that the hot water method dewaxing in the prior art consumes more electric energy and wastes more water resources.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a dewaxing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a dewaxing furnace of a dewaxing apparatus according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a dewaxing truck of a dewaxing device provided by an embodiment of the invention;

in figure 1, a dewaxing furnace; 11. a preheating zone; 12. a heating zone; 13. a heat preservation area; 14. a wax receiving notch; 15. a high temperature zone; 16. a low temperature zone; 17. an observation door; 2. dewaxing vehicle; 21. a dewaxing basket; 211. a wax flowing port; 22. a wax receiving vessel; 23. a heat insulation plate; 3. a wax storage tank; 4. a wax flowing pipeline; 5. and (5) a wax discharge pipeline.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

In the description of the present invention, it is to be noted that "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

The invention provides a dewaxing device, which comprises a dewaxing furnace 1, a dewaxing vehicle 2 and a wax storage tank 3, wherein, the dewaxing furnace 1 comprises a preheating zone 11, a heating zone 12 and a heat preservation zone 13, wherein the preheating zone 11, the heating zone 12 and the heat preservation zone 13 are arranged in sequence, the preheating zone 11 and the heat preservation zone 13 fully utilize heat, and saves electric energy, the longer the dewaxing furnace 1 is, the higher the heat utilization rate is, the more the dewaxing furnace 1 is connected with the dewaxing trolley 2 in a matching way, the more the dewaxing trolley 2 can move in the dewaxing furnace 1, the dewaxing trolley 2 sequentially passes through the preheating zone 11, the heating zone 12 and the heat preservation zone 13, the more the number of the dewaxing trolleys 2 is, the later dewaxing trolley 2 pushes the former dewaxing trolley 2 to move in the dewaxing furnace 1, so that the dewaxing furnace 1 continuously enters the dewaxing trolley 2, meanwhile, the utilization rate of heat is ensured, the waste of heat is reduced, the wax storage tank 3 is positioned below the dewaxing furnace 1, and the dewaxing furnace 1 is communicated with the wax storage tank 3 through a wax flowing pipeline 4;

the dewaxing mould shell is placed on the dewaxing trolley 2, after the dewaxing trolley 2 moves to the heating zone 12, the heating zone 12 can heat the dewaxing mould shell and melt the dewaxing mould shell into wax liquid, and the wax liquid can flow through the dewaxing furnace 1 from the dewaxing trolley 2 and flow into the wax storage tank 3. According to the dewaxing device provided by the invention, the heating zone 12 is heated by the dewaxing furnace 1 through the heater, when the dewaxing trolley 2 moves to the heating zone 12, the dewaxing mold shell on the dewaxing trolley 2 can be heated by heat in the heating zone 12, after the heating zone is heated for a period of time, the heat can be melted into the wax liquid, the wax liquid can flow through the bottom of the dewaxing furnace 1 through the dewaxing trolley 2 and finally flows into the wax storage tank 3, the dewaxing device consumes less electric energy, does not need to heat water, does not need to heat the dewaxing mold shell by hot water, saves water resources, and solves the technical problems that the electric energy consumed by a hot water method is larger and more water resources are wasted in the prior art.

As an optional implementation manner, a heater and a controller are arranged in the dewaxing furnace 1, the heater is located in the heating zone 12, the heater can be an electric furnace wire, the number of the heaters can be two, the two heaters are located at two sides of the heating zone 12, the heat of the heater directly acts on the dewaxing mold shell to accelerate the melting speed of the dewaxing mold shell, the controller is located at the outer side of the dewaxing furnace 1, the heater is electrically connected with the controller, and the controller can adjust the heating temperature of the heater. The dewaxing device has less electricity consumption, and the controller can control the heater to reach the required temperature and can automatically shut down, thereby avoiding waste and accidents.

As an optional embodiment, a wax receiving notch 14 is arranged on the inner side of the bottom of the dewaxing furnace 1, the wax receiving notch 14 may have a V-shaped structure, the wax receiving notch 14 is communicated with the wax storage tank 3 through a wax flowing pipeline 4, the wax storage tank 3 can be replaced at any time, so as to prevent the wax liquid in the wax storage tank 3 from overflowing due to being too full, the wax liquid in the dewaxing vehicle 2 can flow into the wax receiving notch 14 through the wax discharging pipeline 5, the wax receiving notch 14 is located in the middle of the dewaxing furnace 1, so that when the dewaxing vehicle 2 moves in the dewaxing furnace 1, the wax receiving notch 14 can receive the wax liquid from the dewaxing vehicle 2 through the wax discharging pipeline 5, and baffles are arranged on two sides of the wax receiving notch 14 to prevent the wax on the wax receiving notch 14 from flowing to the outside.

In an alternative embodiment, the dewaxing vehicle 2 includes a dewaxing basket 21 and a wax receiving pan 22, the dewaxing basket 21 is located above the wax receiving pan 22, the dewaxing basket 21 is detachably placed on the wax receiving pan 22, in order to facilitate replacement of the dewaxing basket 21, the dewaxing mold shell is placed on the dewaxing basket 21 with a downward opening, sand clamped into the opening also enters the wax storage tank 3 along with the wax liquid to settle when the opening is processed, casting sand holes are prevented, the dewaxing basket 21 is communicated with the wax receiving pan 22, the wax receiving pan 22 is matched with the dewaxing furnace 1, and the wax receiving pan 22 can move in the dewaxing furnace 1.

As an optional embodiment, the dewaxing truck 2 further includes a heat insulation plate 23, the heat insulation plate 23 is connected to a side surface of the wax receiving pan 22, the heat insulation plate 23 is located at a front end of the dewaxing truck 2, a size of the heat insulation plate 23 is matched with an inner cavity of the dewaxing furnace 1, the heat insulation plate 23 is used for isolating heat of a previous dewaxing truck 2 or isolating external temperature of the dewaxing furnace 1, a furnace door does not need to be arranged on the dewaxing furnace 1, the heat insulation plate 23 also serves as a furnace door, and the dewaxing truck 2 can conveniently enter and exit the dewaxing furnace 1.

In an alternative embodiment, the bottom of the dewaxing basket 21 is provided with a wax flow port 211, so that the wax liquid in the dewaxing basket 21 can flow out of the wax flow port 211 and flow into the wax receiving pan 22 conveniently.

As an alternative embodiment, the wax receiving vessel 22 includes an inner layer and an outer layer, a water storage space is provided between the inner layer and the outer layer, and cold water is placed in the water storage space and used for cooling the wax liquid flowing through the wax receiving vessel 22, and the cold water needs to be checked regularly, supplemented appropriately or replaced. When the wax is at about 300 ℃, the paraffin is melted when reaching 70 ℃, the wax liquid freely falls to the bottom of the water-cooled wax receiving vessel 22, and the wax liquid has low viscosity due to high environmental temperature and directly flows into the wax storage tank 3 through the wax discharging pipeline 5, the wax receiving notch 14 and the wax flowing pipeline 4. Thus, the phenomena of carbonization, gasification, electric flash and ignition of the paraffin wax at high temperature are prevented, and the recovery quality of the paraffin wax is ensured.

In an alternative embodiment, the upper half area of the dewaxing furnace 1 is a high temperature area 15, the lower half area of the dewaxing furnace 1 is a low temperature area 16, the dewaxing basket 21 is located in the high temperature area 15, the heater is located in the high temperature area 15, the high temperature area 15 is used for heating a dewaxing mold shell on the dewaxing basket 21, the wax receiving vessel 22 is located in the low temperature area 16, and the low temperature area 16 is used for facilitating the wax receiving vessel 22 to cool the wax liquid.

As an optional embodiment, the device further comprises a hoisting device, the hoisting device can convey the dewaxing vehicle 2 at the outlet of the dewaxing furnace 1 to the inlet of the dewaxing furnace 1, the number of the hoisting devices can be multiple, labor force of workers is saved, a loop track is arranged outside the dewaxing furnace 1, and the hoisting device conveys the dewaxing vehicle 2 along the loop track.

As an alternative embodiment, the dewaxing furnace 1 is provided with an observation door 17, the dewaxing quality of the dewaxing furnace 1 and the dewaxing degree of the dewaxing mold shell can be observed through the observation door 17, and the heating temperature of the heater can be controlled through an adjusting controller, so that the dewaxing speed of the dewaxing mold shell can be changed.

The dewaxed mould shell is basically anhydrous, one third of the mould shell is saved during roasting, the roasting quality is improved, and the external gas phenomenon does not exist in the casting. Not only saves heat energy, but also saves maintenance cost, and improves the aesthetic degree of castings and the delivery time. The dewaxing device is pollution-free, can be used outdoors or in workshops, wastes less heat energy in the workshops, and has better effect. The dewaxing device is not only suitable for low-temperature die materials (about 65 ℃), but also suitable for medium-temperature die materials (about 90 ℃) or high-temperature die materials (150 ℃). The dewaxing device is simple and occupies small area.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.