CN213021045U - Energy-saving roasting furnace for roasting shells - Google Patents

Abstract

The utility model discloses an energy-conserving burning furnace that bakes burning shell relates to casting equipment technical field. The roasting furnace comprises a furnace body, a furnace door and a silicon carbide rod used for heating, wherein two roasting cavities communicated with each other are arranged in the furnace body, a first row of flue and a second flue communicated with the two roasting cavities are arranged on the furnace body, the first row of flue and the second flue are respectively connected with a dust removal device through a first pipeline and a second pipeline, and valves are respectively arranged on the first pipeline and the second pipeline. The roasting chambers are arranged in the left and right directions, the first row of flues are arranged on the left side of the furnace body, the second discharge flue is arranged on the right side of the furnace body, and the partition plate between the roasting chambers is provided with ventilation holes. The roasting furnace can perform secondary combustion on the generated smoke while burning the shell, thereby saving energy and reducing consumption.

Description

Energy-saving roasting furnace for roasting shells

Technical Field

The utility model belongs to the technical field of the casting equipment technique and specifically relates to an energy-conserving burning furnace that bakes burning shell.

Background

In the casting process, the shell needs to be fired before casting, in order to remove residual wax from the shell.

As shown in fig. 9, in the conventional roasting furnace, after the shell is placed in the roasting furnace 1, the residual wax in the shell still has partial completely unburnt smoke after the primary combustion of the roasting furnace, if the black smoke is discharged to the standard, a set of combustion furnace 3 is required to be added behind the flue, and the discharge to the standard can be realized after the secondary combustion. The energy of the latter combustion equipment is only used for burning residual smoke, and the energy is seriously wasted.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model provides a burning furnace is baked over a slow fire in energy-conservation for burning shell, should bake over a slow fire the burning furnace when burning the shell, can also carry out the postcombustion, energy saving and consumption reduction to the smoke and dust that produces.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides an energy-conserving burning furnace that bakes burning furnace for burning shell, includes furnace body, furnace gate and the elema that is used for the heating, the furnace body in be provided with two calcination chambeies that communicate each other, the furnace body on be provided with first row of flue and the second discharge flue that is linked together with two calcination chambeies respectively, first row of flue and second discharge flue link to each other with dust collecting equipment through first pipeline and second pipeline respectively, first pipeline and second pipeline on be provided with the valve respectively.

Furthermore, the two roasting chambers are arranged in the left-right direction, the first exhaust flue is arranged on the left side of the furnace body, the second exhaust flue is arranged on the right side of the furnace body, and the partition plate between the two roasting chambers is provided with a ventilation hole.

Furthermore, a plurality of groups of longitudinally extending silicon-carbon rod groups are arranged in the roasting cavity along the up-down direction, each group of silicon-carbon rod groups is controlled independently, and a movable heat insulation plate is arranged in the roasting cavity.

Furthermore, a plurality of clamping sliding grooves are uniformly distributed on the left side wall and the right side wall of the roasting cavity along the vertical direction, the clamping sliding grooves penetrate through the furnace body and the partition plate forwards, and clamping bosses matched with the clamping sliding grooves are respectively arranged at the left end and the right end of the movable heat-insulation plate.

Furthermore, each group of silicon-carbon rod group comprises two silicon-carbon rods, and the two silicon-carbon rods are respectively arranged on the left side wall and the right side wall of the roasting cavity.

Further, the elema set up in the joint spout in, just the degree of depth of joint spout with the difference of the diameter of elema is greater than the height of joint boss.

Furthermore, the baffle on be provided with a plurality of ventilation holes, and a plurality of ventilation holes are the matrix arrangement, are located the baffle is with the silicon carbide rod on one side and each ventilation hole interval arrangement of walking.

Furthermore, a plurality of vent holes are formed in the partition plate between the two roasting cavities, and the vent holes are uniformly formed in the partition plate.

Furthermore, the silicon carbide rod is embedded in the left side wall and/or the right side wall of the roasting cavity.

The utility model has the advantages that:

1. two mutually communicated roasting cavities are arranged in the roasting furnace, and each roasting cavity is provided with a separately controllable discharge flue, so that during actual work, shells are placed in the two roasting cavities at intervals, before a new shell is placed, a discharge flue valve of the roasting cavity in which the new shell is placed is closed, and then a discharge flue valve of the other roasting cavity is opened. Therefore, as the roasting cavity which is placed into the shell before is roasted for a period of time, the wax in the shell is basically completely combusted, the generated smoke pollution is low, and the emission standard can be reached without secondary combustion, so that the wax can be directly discharged through dust removal equipment; the roasting cavity of the shell is placed in the back (namely the roasting cavity of the novel shell is placed), the generated smoke dust can enter the dust removal equipment through another roasting cavity, so that secondary combustion can be carried out in another roasting cavity, complete combustion is ensured, and emission standard is reached.

2. The discharge flue of two calcination chambeies sets up respectively the outside in calcination chamber to through the vent straight line intercommunication on the intermediate bottom, in actual work, the flue gas need not turn round, can guarantee the unobstructed nature that the flue gas flows.

3. The movable heat-insulation plate is arranged on the roasting furnace, so that the size of a roasting cavity in the roasting furnace can be adjusted according to the number of shells placed in actual production, and the opening number of the silicon carbide rods is controlled according to the size of the roasting cavity in actual work, so that the roasting furnace is suitable for small-batch production, has good flexibility, is favorable for energy conservation and consumption reduction, and reduces the production cost.

Drawings

FIG. 1 is a schematic view of the internal structure of a roasting furnace;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is an enlarged schematic view of portion B of FIG. 1;

FIG. 4 is a schematic structural view of a movable insulation board;

FIG. 5 is a schematic view taken along line A in FIG. 1;

FIG. 6 is a schematic plan view of the separator;

FIG. 7 is a first schematic diagram of the electrical connection of the SiC rod;

FIG. 8 is a second schematic diagram of the electrical connection of the SiC rod;

fig. 9 is a schematic structural view of a conventional roasting system for shell burning.

In the figure: 1-roasting furnace, 11-furnace body, 12-furnace door, 13-clapboard, 131-ventilation hole, 14-first roasting cavity, 141-first row flue, 142-first pipeline, 143-first valve, 15-second roasting cavity, 151-second discharge flue, 152-second pipeline, 153-second valve, 16-movable heat preservation plate, 161-clamping boss, 17-silicon carbon rod group, 171-silicon carbon rod, 18-clamping chute, 181-upper longitudinal chute, 182-lower longitudinal chute and 183-arc connecting chute,

2-a dust-removing device is arranged,

3-a combustion furnace.

Detailed Description

For convenience of description, a side where the oven door is disposed is taken as a front side, and a left-right direction is defined by a direction facing the oven door, that is, a coordinate system shown in fig. 1 is taken as a horizontal direction, a front-back direction is a longitudinal direction, and an up-down direction is a vertical direction.

As shown in fig. 1, an energy-saving roasting furnace for roasting shells includes a furnace body 11 and a furnace door 12, and the furnace body 11 and the furnace door 12 together form a roasting cavity in a rectangular parallelepiped structure, a partition plate 13 is disposed in the roasting cavity, and the partition plate 13 divides the roasting cavity into a left part and a right part, and for convenience of description, the roasting cavity on the left side is defined as a first roasting cavity 14, and the roasting cavity on the right side is defined as a second roasting cavity 15. The partition plate 13 is provided with a vent hole 131 for communicating the first roasting chamber 14 and the second roasting chamber 15.

The furnace body 11 is respectively provided with a first exhaust flue 141 communicated with the first roasting cavity 14 and a second exhaust flue 151 communicated with the second roasting cavity 15, the first exhaust flue 141 and the second exhaust flue 151 are respectively connected with the inlet of the dust removing device 2 through a first pipeline 142 and a second pipeline 152, namely, the first exhaust flue 141 and the second exhaust flue 151 are connected in parallel with the inlet of the dust removing device 2. The first pipeline 142 is provided with a first valve 143 for controlling the on-off of the first pipeline 142, and the second pipeline 152 is provided with a second valve 153 for controlling the on-off of the second pipeline 152.

The working process is as follows:

(1) the entire roasting chamber, i.e. the first roasting chamber 14 and the second roasting chamber 15, is preheated.

(2) The shells are loaded into the first roasting chamber 14, and at the same time, the first valve 143 is closed and the second valve 153 is opened, and at this time, the shells roasted in the first roasting chamber 14 need to be discharged through the second discharge flue 151 of the second roasting chamber 15, and thus, the smoke generated by burning the residual wax is discharged to the dust removing device 2 after being secondarily burned through the second roasting chamber 15.

(3) After the shell in the first roasting chamber 14 is roasted for a certain period of time, a new shell is put into the second roasting chamber 15, and at the same time, the second valve 153 is closed, the first valve 143 is opened, and the roasting is continued. At this time, because the shell in the first roasting cavity 14 has been roasted for a period of time, the wax in the shell is also completely combusted, and the smoke and dust pollution generated at this time is low, and can reach the emission standard without secondary combustion, so the wax can be directly discharged through the dust removing equipment 2, and the smoke and dust generated by the shell in the second roasting cavity 15 can enter the dust removing equipment 2 only through the first exhaust flue 141 of the first roasting cavity 14, so the secondary combustion can be performed in the first roasting cavity 14, the complete combustion is ensured, and the emission standard is reached.

(4) After the shell in the first baking chamber 14 is completely baked, the shell in the first baking chamber 14 is taken out and a new shell is put in, and at the same time, the first valve 143 is closed, the second valve 153 is opened, and the baking is continued.

(5) After the shell in the second baking chamber 15 is completely baked, the shell in the second baking chamber 15 is taken out and a new shell is put in, and at the same time, the second valve 153 is closed, the first valve 143 is opened, and the baking is continued.

(6) And (5) repeating the operation of the step (4) and the step (5).

Furthermore, the flue gas of the conventional roasting furnace 1 is arranged on the top, and if the flue gas is arranged on the top, the flow direction of the flue gas in one roasting cavity needs to be changed, even the flue gas turns 180 degrees, and the problem of unsmooth circulation or uneven circulation exists when the flue gas in the other roasting cavity is discharged through the flue gas in the other roasting cavity.

For this purpose, as shown in fig. 1, the first exhaust flue 141 is disposed on the left side of the furnace body 11, and the second exhaust flue 151 is disposed on the right side of the furnace body 11. As shown in figure 1, when the flue gas generated in one roasting cavity is discharged through the discharge flue of the other roasting cavity, the flue gas is in straight-line circulation, flow loss can not occur, and the smoothness and the uniformity of the flow of the flue gas are ensured.

Further, in order to further ensure the uniformity of the flow of the flue gas, as shown in fig. 6, a plurality of ventilation holes 131 are provided on the partition plate 13, and the ventilation holes 131 are uniformly arranged on the partition plate 13. Preferably, the plurality of vent holes 131 are arranged in a matrix of five rows and seven columns on the partition plate 13 (the longitudinal direction is a row, and the vertical direction is a column).

Further, as shown in fig. 1, a plurality of sets of longitudinally extending silicon-carbon rod sets 17 for heating are disposed in the first baking cavity 14 and the second baking cavity 15, and each set of silicon-carbon rod sets 17 is individually controlled, that is, each set of silicon-carbon rod sets 17 is connected in parallel to a power supply circuit, and a switch for individually controlling the power supply of each set of silicon-carbon rod sets 17 is disposed on the power supply circuit. To meet the functional requirements, the specific circuit connection belongs to the prior art for those skilled in the art, and only two connection circuits such as fig. 7 and fig. 8 are listed here, and those skilled in the art can fully understand the circuit connection relationship in fig. 7 and fig. 8, and will not be redundantly described here through the text. Preferably, a plurality of groups of the silicon carbide rods 171 are uniformly arranged in a vertical direction.

The first roasting cavity 14 and the second roasting cavity 15 are respectively internally provided with a movable heat-insulation plate 16, and two ends of the movable heat-insulation plate 16 are respectively fixedly connected with the furnace body 11 and the partition plate 13 through a connecting structure. As a specific implementation manner, in this embodiment, the left side wall and the right side wall inside the furnace body 11, and the two sides of the partition plate 13 are respectively provided with a plurality of clamping sliding grooves 18 extending along the longitudinal direction, the plurality of clamping sliding grooves 18 are uniformly arranged along the vertical direction, and the clamping sliding grooves 18 penetrate through the furnace body 11 and the partition plate 13 forward. The left and right ends of the movable heat insulation board 16 are respectively provided with a clamping boss 161 matched with the clamping sliding groove 18.

Further, each group 17 of the silicon-carbon rods includes two silicon-carbon rods 171, and the two silicon-carbon rods 171 are respectively disposed on the left side wall and the right side wall of the corresponding roasting cavity, that is, the silicon-carbon rods 171 in the first roasting cavity 14 are respectively disposed on the left side wall inside the furnace body 11 and the left side surface of the partition plate 13, and the silicon-carbon rods 171 in the second roasting cavity 15 are respectively disposed on the right side wall inside the furnace body 11 and the right side surface of the partition plate 13. Here, the two silicon carbide rods 171 in the silicon carbide rod group 17 may be in a parallel relationship or a series relationship, and as a specific implementation, the two silicon carbide rods 171 in the silicon carbide rod group 17 are in a series relationship in this embodiment.

Further, as shown in fig. 2 and 3, the silicon carbide rod 171 is disposed in the clamping sliding groove 18, and a difference between a depth of the clamping sliding groove 18 and a diameter of the silicon carbide rod 171 is greater than a height of the clamping boss 161. That is, when the clamping protrusion is inserted into the clamping sliding groove 18, the space formed by the clamping protrusion and the clamping sliding groove 18 can accommodate the silicon carbide rod 171.

As a specific implementation manner, the silicon carbide rods 171 in this embodiment are U-shaped silicon carbide rods 171, and the connection ends of the silicon carbide rods 171 all extend to the outside of the furnace body 11 through the rear side wall of the furnace body 11. Correspondingly, the clamping sliding groove 18 is shaped as shown in fig. 6, and includes an upper longitudinal sliding groove 181 and a lower longitudinal sliding groove 182, and an arc-shaped connecting groove 183 for accommodating the bending portion of the silicon carbide rod 171 is disposed between the upper longitudinal sliding groove 181 and the lower longitudinal sliding groove 182. Two ends of the movable heat insulation board 16 are respectively provided with two clamping bosses 161, during installation, the clamping bosses 161 on the upper portion are matched with the upper portion longitudinal sliding grooves 181, and the clamping bosses 161 on the lower portion are matched with the lower portion longitudinal sliding grooves 182.

Further, as shown in fig. 5, the silicon carbide rods 171 and the respective ventilation holes 131 located on the same side of the partition plate 13 are arranged at intervals.

Example two

The movable heat insulation plate 16 is removed, the left side wall and the right side wall of the first roasting cavity 14 and the second roasting cavity 15 are respectively provided with a U-shaped silicon carbide rod 171, the silicon carbide rods 171 are embedded in the left side wall and the right side wall of the first roasting cavity 14 and the second roasting cavity 15, namely, the left side wall and the right side wall of the first roasting cavity 14 and the second roasting cavity 15 are respectively provided with a U-shaped groove for containing the silicon carbide rods 171, and other structures are the same as the first embodiment.

The reason for this is that, by the embedded design, it is possible to prevent the silicon carbide rods 171 from being damaged by collision with the silicon carbide rods 171 during the process of housing the mold.

Claims (9)

1. The utility model provides an energy-conserving burning furnace that bakes over a slow fire for burning shell, includes furnace body, furnace gate and is used for the elema that heats, its characterized in that: the furnace body in be provided with two calcination chambeies that communicate each other, the furnace body on be provided with first row flue and the second discharge flue that is linked together with two calcination chambeies respectively, first row flue and second discharge flue pass through first pipeline and second pipeline respectively and link to each other with dust collecting equipment, first pipeline and second pipeline on be provided with the valve respectively.

2. The energy-saving roasting furnace for the burning shell of claim 1, characterized in that: the roasting chambers are arranged in the left and right directions, the first row of flues are arranged on the left side of the furnace body, the second discharge flue is arranged on the right side of the furnace body, and the partition plate between the roasting chambers is provided with ventilation holes.

3. An energy saving roaster for burning shells as claimed in claim 2, wherein: the roasting cavity is internally provided with a plurality of groups of longitudinally extending silicon-carbon rod groups along the up-down direction, each group of silicon-carbon rod groups is controlled independently, and the roasting cavity is internally provided with a movable heat insulation plate.

4. An energy saving roaster for burning shells as claimed in claim 3, wherein: a plurality of clamping sliding grooves are uniformly distributed in the left side wall and the right side wall of the roasting cavity along the vertical direction, the clamping sliding grooves penetrate through the furnace body and the partition plate forwards, and clamping bosses matched with the clamping sliding grooves are respectively arranged at the left end and the right end of the movable heat-insulation plate.

5. The energy-saving roasting furnace for the burning shell of claim 4, wherein: each group of silicon-carbon rod group comprises two silicon-carbon rods, and the two silicon-carbon rods are respectively arranged on the left side wall and the right side wall of the roasting cavity.

6. An energy saving roaster for burning shells as claimed in claim 5, wherein: the elema set up in the joint spout in, just the degree of depth of joint spout with the difference of the diameter of elema is greater than the height of joint boss.

7. The energy-saving roasting furnace for the burning shell of claim 6, wherein: the baffle on be provided with a plurality of ventilation holes, and a plurality of ventilation holes are the matrix arrangement, are located the baffle is with the silicon carbide rod on one side and each ventilation hole interval arrangement of walking.

8. The energy-saving roasting furnace for the burning shell of claim 1, characterized in that: and a plurality of ventilation holes are formed in the partition plate between the two roasting cavities, and the ventilation holes are uniformly distributed in the partition plate.

9. The energy-saving roasting furnace for the burning shell of claim 1, characterized in that: the silicon carbide rod is embedded in the left side wall and/or the right side wall of the roasting cavity.

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