CN219074295U

CN219074295U - Steam dewaxing cauldron is used in hardware casting production

Info

Publication number: CN219074295U
Application number: CN202223457623.0U
Authority: CN
Inventors: 李少群
Original assignee: Quanzhou Xinhe Precision Casting Co ltd
Current assignee: Quanzhou Xinhe Precision Casting Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-05-26
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses a steam dewaxing kettle for hardware casting production, which comprises a steam generator and a dewaxing kettle body, wherein a dewaxing cavity and a gas-liquid chamber are arranged in the steam generator, the steam generator is communicated with the dewaxing cavity through a communication pipe, the dewaxing cavity is arranged in the gas-liquid chamber, a cavity for gas liquid to flow is arranged between the dewaxing cavity and the gas-liquid chamber, the lower end of the dewaxing cavity is communicated outwards through a wax discharge pipe, the lower end of the gas-liquid chamber is communicated outwards through a drain pipe, the annular air supply piece is of an annular structure, the upper end of the annular air supply piece is provided with a plurality of notches communicated with the steam cavity in an annular array, and when steam is filled into the annular air supply piece through the communication pipe, the steam can flow into the steam cavity along with the plurality of notches on the annular air supply piece in an upward surging mode at the same time, so that uniform heating of the temperature in the steam cavity is formed.

Description

Steam dewaxing cauldron is used in hardware casting production

Technical Field

The utility model relates to the field of dewaxing kettles, in particular to a steam dewaxing kettle for hardware casting production.

Background

The middle-temperature wax precision casting process includes the steps of making fusible mold with fusible material, coating several layers of fireproof paint, drying and hardening to form one integral mold shell, smelting the mold with steam or hot water, setting the mold shell in sand box, filling dry sand around the mold, and high temperature roasting. Dewaxing is a step in the precision casting process, and the steam of the conventional dewaxing device usually enters from the bottom of the steam liner, so that the bottom layer in the dewaxing kettle is dewaxed first, wax melts and absorbs a large amount of heat, the upper steam temperature is lower, and the dewaxing process is slow. In addition, during dewaxing, water vapor is mixed into the wax liquid to prolong the later water removal time and reduce the production efficiency. During dewaxing, impurities such as some grits exist in wax liquid collected at the lower end of the dewaxing kettle, and if the fallen wax liquid falls to splash the wax liquid collected at the lower end, the grits are lifted onto the shell, so that the quality of the shell is affected.

Chinese patent CN211990821U proposes a steam dewaxing kettle, which has a simple structure and is convenient to use; the steam cavity is arranged on the shell wall of the inner shell, steam is distributed into the upper cavity through the steam cavity and the steam holes, and the shell can be uniformly heated, so that the shell is uniformly heated, and the dewaxing process is accelerated; the inner shell is arranged in the outer shell, and water vapor is condensed at the top of the shell cavity and then slides downwards along the side wall of the shell cavity, so that the water vapor is reduced from being mixed into wax liquid; the slag baffle is arranged in the lower cavity, so that the falling of wax liquid is not influenced, splashing of gravel and the like below can be avoided, and the quality of the shell is influenced.

However, the dewaxing kettle in the patent finds that when the dewaxing kettle is heated by steam, the steam is only blown to the upper part of the wax mould, but not heated to the lower part of the wax mould to melt the wax mould, and the steam is only slowly injected from one side of the steam cavity when the steam is injected into the steam cavity, so that the efficiency is not ideal when the wax mould is heated and melted.

Disclosure of Invention

The utility model provides a steam dewaxing kettle for hardware casting production, which overcomes the defects described in the background art.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a steam dewaxing cauldron is used in hardware casting production, includes steam generator, dewaxing cauldron body, be equipped with dewaxing chamber, gas-liquid chamber in the steam generator, the steam generator is linked together through a communication pipe and dewaxing chamber, in the gas-liquid chamber is located to dewaxing chamber, and has the mobilized cavity of gas supply liquid between dewaxing chamber and the gas-liquid chamber, dewaxing chamber lower extreme is through a dewaxing pipe outside intercommunication, the outside intercommunication of gas-liquid chamber lower extreme through a drain pipe.

A preferred technical scheme is as follows: the dewaxing intracavity is equipped with the steam chamber that supplies steam to flow and is used for placing the placing filter screen plate of wax matrix, the steam chamber is close to the surface intercommunication of placing the upper and lower both sides of filter screen plate and has a plurality of nozzles, every the spout of nozzle all sets up towards placing the filter screen plate, communicating pipe is linked together with the steam chamber through an annular air feed.

A preferred technical scheme is as follows: the annular air supply piece is of an annular structure, and a plurality of notches communicated with the steam cavity are formed in the upper end of the annular air supply piece in an annular array.

A preferred technical scheme is as follows: the inner side lower extreme symmetry in dewaxing chamber is equipped with the heat conduction board, the heat conduction board is close to the steam chamber setting to the top of heat conduction board is equipped with a plurality of splash baffles that are the slope setting.

A preferred technical scheme is as follows: every two adjacent splash baffles are opposite in inclination direction and are staggered, and all the splash baffles are arranged below the placed filter screen plate.

A preferred technical scheme is as follows: the upper end of the dewaxing cavity is communicated with the gas-liquid chamber through an opening, the upper part of the gas-liquid chamber is provided with a concave part with two sides gradually deepening towards the middle, and the concave part is staggered to be arranged right above the opening.

Compared with the background technology, the technical proposal has the following advantages:

the annular air supply piece is of an annular structure, the upper end of the annular air supply piece is provided with the plurality of notches communicated with the steam cavity in an annular array, when steam is filled into the annular air supply piece through the communicating pipe, the steam can flow into the steam cavity along with the plurality of notches on the annular air supply piece in an upward surging mode at the same time, so that the temperature in the steam cavity is uniformly heated, the temperature guide plate is arranged for heating the temperature guide plate at the same time when the steam is filled into the steam cavity, and when a wax pattern on the filter screen plate is placed to melt and drop on the surface of the temperature guide plate, the cooling solidification of the wax pattern can be effectively avoided.

The concave part is arranged right above the opening in a staggered way, and the purpose of the arrangement is that after steam is sprayed outwards along the dewaxing cavity, the steam cannot drop into the dewaxing cavity again when the concave part forms water drops.

Drawings

The utility model is further described below with reference to the drawings and examples.

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic view of the internal structure of the dewaxing kettle body 2.

In the figure: the steam generator 1, the communicating pipe 11, the annular air feeder 12, the dewaxing kettle body 2, the dewaxing cavity 21, the steam cavity 211, the nozzle 212, the placement filter screen plate 213, the splash guard 214, the wax drain pipe 215, the temperature guide plate 216, the gas-liquid chamber 22, the drain pipe 221 and the cabin door 23.

Detailed Description

As shown in fig. 1-2, a steam dewaxing kettle for hardware casting production comprises a steam generator 1 and a dewaxing kettle body 2, wherein a dewaxing cavity 21 and a gas-liquid chamber 22 are arranged in the steam generator 1, the steam generator 1 is communicated with the dewaxing cavity 21 through a communication pipe 11, the dewaxing cavity 21 is arranged in the gas-liquid chamber 22, a cavity for gas liquid to flow is arranged between the dewaxing cavity 21 and the gas-liquid chamber 22, the lower end of the dewaxing cavity 21 is communicated outwards through a wax drain pipe 215, the lower end of the gas-liquid chamber 22 is communicated outwards through a drain pipe 221, and a cabin door 23 is arranged on the outer side of the kettle body 2.

Further, in this embodiment, a steam cavity 211 for supplying steam to flow and a placing screen 213 for placing wax molds are provided in the dewaxing cavity 21, the steam cavity 211 is communicated with a plurality of nozzles 212 near the surfaces of the upper side and the lower side of the placing screen 213, the nozzle of each nozzle 212 is disposed towards the placing screen 213, the communicating pipe 11 is communicated with the steam cavity 211 through an annular air supply 12, when in use, the wax molds can be placed on the placing screen 213, the communicating pipe 11 is utilized to fill steam into the annular air supply 12, so that the steam flows along the steam cavity 211, until the wax molds on the placing screen 213 are heated and melted by being discharged to the placing screen 213 through the nozzles 212, and finally discharged outwards along the wax discharge pipe 215, and because the annular air supply 12 has an annular structure, and the upper end of the annular air supply 12 has a plurality of notches communicated with the steam cavity 211.

In addition, in order to avoid the molten wax from being re-condensed on the inner side of the dewaxing cavity 21, the lower end of the inner side of the dewaxing cavity 21 in the embodiment is symmetrically provided with a heat conducting plate 216, the heat conducting plate 216 is arranged close to the steam cavity 211, a plurality of inclined splash baffles 214 are arranged above the heat conducting plate 216, when the molten wax drops, the molten wax cannot splash on a workpiece again, and the heat conducting plate 216 is arranged so as to heat the heat conducting plate 216 at the same time when the steam is poured into the steam cavity 211, and when the wax pattern on the placed filter screen plate 213 melts and drops to the surface of the heat conducting plate 216, the cooling solidification of the wax pattern can be effectively avoided.

Moreover, the inclination directions of every two adjacent splash baffles 214 are opposite and are staggered, and all the splash baffles 214 are arranged below the placement screen plate 213, so that when wax liquid drops, the dropping direction of the wax liquid can be changed through the splash baffles 214.

And, dewaxing chamber 21 upper end is linked together through an opening and gas-liquid chamber 22, and the upper portion of gas-liquid chamber 22 has a both sides and deepens the depressed part gradually towards the centre, the depressed part staggers the setting of just above the opening, and the purpose of setting so is in order that steam is outside blowout along dewaxing chamber 21 after, when the depressed part forms the water droplet drip, can not drip into dewaxing chamber 21 again.

The foregoing description is only illustrative of the preferred embodiments of the present utility model, and therefore should not be taken as limiting the scope of the utility model, for all changes and modifications that come within the meaning and range of equivalency of the claims and descriptions are therefore intended to be embraced therein.

Claims

1. The utility model provides a steam dewaxing cauldron is used in hardware casting production, includes steam generator (1), dewaxing cauldron body (2), its characterized in that: a dewaxing cavity (21) and a gas-liquid chamber (22) are arranged in the steam generator (1), the steam generator (1) is communicated with the dewaxing cavity (21) through a communication pipe (11), the dewaxing cavity (21) is arranged in the gas-liquid chamber (22), a chamber for gas-liquid flow is arranged between the dewaxing cavity (21) and the gas-liquid chamber (22),

the lower end of the dewaxing cavity (21) is communicated outwards through a dewaxing pipe (215), and the lower end of the gas-liquid chamber (22) is communicated outwards through a drain pipe (221).

2. The steam dewaxing kettle for hardware casting production of claim 1, wherein: be equipped with in dewaxing chamber (21) and supply steam cavity (211) that steam flowed and be used for placing filter screen board (213) of wax matrix, the surface intercommunication that steam cavity (211) are close to the upper and lower both sides of placing filter screen board (213) has a plurality of nozzles (212), every spout of nozzle (212) all sets up towards placing filter screen board (213), communicating pipe (11) are linked together with steam cavity (211) through a cyclic annular air feed piece (12).

3. The steam dewaxing kettle for hardware casting production of claim 2, wherein: the annular air supply piece (12) is of an annular structure, and a plurality of notches communicated with the steam cavity (211) are formed in the upper end of the annular air supply piece (12) in an annular array.

4. The steam dewaxing kettle for hardware casting production of claim 2, wherein: the inner side lower extreme symmetry of dewaxing chamber (21) is equipped with heat conduction board (216), heat conduction board (216) are close to steam chamber (211) setting to the top of heat conduction board (216) is equipped with a plurality of splash baffles (214) that are the slope setting.

5. The steam dewaxing kettle for hardware casting production of claim 4, wherein: every two adjacent splash baffles (214) are opposite in inclination direction and are arranged in a staggered mode, and all the splash baffles (214) are arranged below the placed filter screen plates (213).

6. A steam dewaxing kettle for producing hardware casting according to any one of claims 1 to 5 wherein: the upper end of the dewaxing cavity (21) is communicated with the gas-liquid chamber (22) through an opening, the upper part of the gas-liquid chamber (22) is provided with a concave part with two sides gradually deepening towards the middle, and the concave part is arranged right above the opening in a staggered way.