CN214321691U

CN214321691U - Energy-saving sand discharge device

Info

Publication number: CN214321691U
Application number: CN202023346670.9U
Authority: CN
Inventors: 熊帆; 熊鹰; 陈方旭; 王德春; 周高胜
Original assignee: Chongqing Changjiang River Moulding Material Group Co ltd
Current assignee: Chongqing Changjiang River Moulding Material Group Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-01
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to the technical field of cast material processing equipment, and discloses an energy-saving sand discharge device, which comprises a sand discharge pipe arranged at the side part of a furnace body, wherein one end of the sand discharge pipe is communicated with a sand discharge port of the furnace body, and the other end of the sand discharge pipe is a sand discharge port; the sand outlet pipe is obliquely arranged; the sand outlet pipe is provided with a partition plate, the partition plate divides the sand outlet pipe into a sand outlet channel and an air chamber, a sand discharging part is arranged in the sand outlet channel, and the sand discharging part is communicated with the air chamber. By adopting the sand discharge device, the heat loss in the sand discharge process can be reduced, and the energy-saving effect is achieved.

Description

Energy-saving sand discharge device

Technical Field

The utility model relates to a casting mould material treatment facility's technical field, concretely relates to energy-conserving sand discharging device.

Background

The roasting furnace is a main device for a waste sand casting regeneration technology, and the waste sand is roasted at a high temperature, so that a film coating layer on the surface of the waste sand falls off, and the regeneration and recycling of the waste sand are realized.

The roasting furnace commonly used at present is a vertical two-layer roasting furnace, the upper part of the furnace body is connected with a feeding pipe, a sealing plate is arranged in the furnace body and divides the furnace body into an upper combustion chamber and a lower combustion chamber, the bottom of the furnace body is connected with a discharging pipe and communicated with a main pipe, and a combustor is arranged in the main pipe. The specific flow of the roasting furnace during operation is as follows: add waste sand through the inlet pipe up the combustion chamber, waste sand flows on the shrouding, then falls into in proper order in the combustion chamber down, discharges through arranging the material pipe at last. Meanwhile, the burner heats the air in the main pipe to raise the temperature of the air, the main pipe leads the hot air into the combustion chamber downwards, and the hot air heats the waste sand. In the process, air flows from the lower combustion chamber to the upper combustion chamber in sequence and is finally discharged through the feeding pipe; when air flows from the lower combustion chamber to the upper combustion chamber, two paths are provided, wherein the first path directly flows to the upper combustion chamber through the sealing plate, and the second path is opposite to the flow direction of the waste sand.

The roasting furnace in the prior art has high energy consumption, and particularly takes longer time to start, and the roasting furnace can be started at least for more than 3 hours.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an energy-conserving sand discharging device adopts this sand discharging device can reduce the calorific loss at the sand discharging in-process, reaches energy-conserving effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an energy-saving sand discharge device comprises a sand discharge pipe arranged on the side part of a furnace body, wherein one end of the sand discharge pipe is communicated with a sand discharge port of the furnace body, and the other end of the sand discharge pipe is a sand discharge port; the sand outlet pipe is obliquely arranged and the length of the sand outlet pipe is more than 3 times of the height of the sand outlet pipe; the sand outlet pipe is provided with a partition plate, the partition plate divides the sand outlet pipe into a sand outlet channel and an air chamber, a sand discharging part is arranged in the sand outlet channel, and the sand discharging part is communicated with the air chamber.

The principle and the beneficial effect of this scheme of adoption lie in: the inventor finds that the relatively long starting time of the roasting furnace in the prior art is that the heat loss in the furnace body is relatively serious during roasting in the prior art, and particularly, the heat in the furnace body is discharged along with sand discharge in the sand discharge process, so that the heat loss is relatively large, and further, the energy consumption is improved.

When the sand discharge device of the scheme is adopted, the sand roasted by the roasting furnace enters the sand outlet pipe after being discharged from the sand discharge port of the roasting furnace body. Because the length of the sand discharging pipe is more than 3 times of the height of the sand discharging pipe, the angle formed by the bottom end of the end part of the sand discharging pipe far away from the furnace body to the high end of the other end and the horizontal plane is smaller than the repose angle of the roasted sand, so the sand discharged from the furnace body cannot flow naturally, namely the roasted sand can seal the sand discharging pipe, the heat in the furnace body is prevented from being discharged through the sand discharging pipe, and the energy-saving effect is achieved. When the sand needs to be discharged, air is blown in through the air chamber, enters the sand outlet channel through the sand discharge part and blows the roasted sand to flow along the sand outlet pipeline, and the sand discharge effect is achieved. When the sand is discharged, the sand outlet pipe is still sealed by the roasted sand, so that the heat loss is reduced.

Furthermore, the inclined angle of the sand outlet pipe is 1-15 degrees.

Further, the sand discharge part comprises an outer pipe and an inner pipe, the upper end of the outer pipe is sealed and provided with a communicating cavity, the inner pipe is located in the communicating cavity, two ends of the inner pipe are respectively communicated with the air chamber and the communicating cavity, and an air outlet is formed in the side part of the outer pipe.

Further, the air outlet is arranged at the lower part of the side wall of the outer tube.

Further, the wind power generation device also comprises a wind source which is communicated with the wind chamber.

Further, the wind source is a Roots blower.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of the energy-saving sand discharge device of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a perspective view of the communicating shell in the second embodiment of the energy-saving sand discharging device of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a furnace body 1, a sand outlet pipe 2, a closed box 3, an air chamber 4, a sand outlet channel 5, a fan 6, an outer pipe 7, an inner pipe 8, a communicating cavity 9, an air outlet 10, a communicating shell 11, an air inlet pipe 12, a baffle 13, a communicating hole 14 and an air outlet pipe 15.

Example one

The embodiment is basically as shown in the attached figures 1 and 2: an energy-saving sand discharge device comprises a closed box 3 and a sand discharge pipe 2 arranged on the side part of a furnace body 1, wherein one end of the closed box 3 is connected with a sand discharge port of the furnace body 1, one end of the sand discharge pipe 2 is communicated with the closed box 3, and the other end of the sand discharge pipe is a sand discharge port; the sand outlet pipe 2 is obliquely arranged, and the length of the sand outlet pipe 2 is more than 3 times of the height of the sand outlet pipe 2; the sand outlet pipe 2 is provided with a partition board, the partition board divides the sand outlet pipe 2 into a sand outlet channel 5 and an air chamber 4, a sand discharging part is arranged in the sand outlet channel 5, and the sand discharging part is communicated with the air chamber 4.

The angle of inclination of the sand outlet pipe 2 is 1-15 °, and the angle of the sand outlet pipe 2 in this embodiment is 5 °. The sand discharging part comprises an outer pipe 7 and an inner pipe 8, the upper end of the outer pipe 7 is sealed, a communicating cavity 9 is arranged in the outer pipe 7, the inner pipe 8 is located in the communicating cavity 9, two ends of the inner pipe are respectively communicated with the air chamber 4 and the communicating cavity 9, and an air outlet 10 is arranged on the side part of the outer pipe 7.

The air outlet 10 is arranged at the lower part of the side wall of the outer tube 7. The energy-saving sand discharge device in the embodiment further comprises an air source, specifically, the air source is a roots blower 6, and the roots blower 6 is fixedly connected with the furnace body 1 through bolts and communicated with the air chamber 4.

The device further comprises a material level meter and a controller, wherein the material level meter is positioned in the closed box, and the controller is electrically connected with the material level meter respectively. The level indicator and the controller used in the present embodiment are all the prior art, and are known to those skilled in the art, for example, a level indicator with a model number of QHC-ST-1 can be used; the controller may be a controller of model MAM-210.

The specific implementation process is as follows: when the sand discharge device is adopted, sand which is roasted by the roasting furnace enters the closed box 3 after being discharged from the sand discharge port of the roasting furnace body 1, and then flows into the sand outlet pipe 2 from the closed box 3. Because the length of the sand outlet pipe 2 is more than 3 times of the height of the sand outlet pipe 2, the angle formed by the bottom end of the end part of the sand outlet pipe 2 far away from the furnace body 1 to the high end of the other end and the horizontal plane is smaller than the repose angle of the roasting sand, so the sand discharged from the furnace body 1 cannot flow naturally, namely the roasting sand can seal the sand outlet pipe 2, the heat in the furnace body 1 is prevented from being discharged through the sand outlet pipe 2, and the energy-saving effect is achieved. When the sand needs to be discharged, air is blown in through the air chamber 4, enters the sand outlet channel 5 through the sand discharge part and blows the roasted sand to flow along the sand outlet pipe 2, and the sand discharge effect is achieved. When the sand is discharged, the sand outlet pipe 2 is still sealed by the roasted sand, so that the heat loss is reduced.

Example two

Referring to fig. 3, the difference between the first embodiment and the second embodiment is that the present embodiment further includes a communicating casing 11, a communicating chamber is disposed in the communicating casing 11, an air inlet pipe 12 is disposed at one end of the communicating chamber, an air outlet pipe 15 is disposed at the other end of the communicating chamber, and the air inlet pipe 12 and the air outlet pipe 15 are respectively communicated with the communicating chamber. The air inlet pipe 12 is communicated with the Roots blower 6, and the air outlet pipe 15 is communicated with the air chamber 4 through a communicating pipe. The upper part of the communicating shell 11 is rotatably connected with a round baffle 13 through a pin shaft, the baffle 13 is provided with a plurality of communicating holes 14, and the communicating holes 14 are respectively round and have different diameters. The centers of circles of the communication holes 14 are all located on the same circle concentric with the baffle 13, and one of the communication holes is opposite to the air outlet 10.

When the sand is discharged, the baffle 13 can be rotated to enable the communicating holes 14 with different sizes to be opposite to the air outlet 10, so that the air quantity discharged from the air outlet pipe 15 is adjusted, the flow of air blown out from the air outlet 10 is adjusted, and the effect of adjusting the sand discharge quantity in unit time is achieved.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides an energy-conserving sand discharging device which characterized in that: the sand outlet pipe is arranged on the side part of the furnace body, one end of the sand outlet pipe is communicated with a sand discharge port of the furnace body, and the other end of the sand outlet pipe is a sand outlet; the sand outlet pipe is obliquely arranged and the length of the sand outlet pipe is more than 3 times of the height of the sand outlet pipe; the sand outlet pipe is provided with a partition plate, the partition plate divides the sand outlet pipe into a sand outlet channel and an air chamber, a sand discharging part is arranged in the sand outlet channel, and the sand discharging part is communicated with the air chamber.

2. The energy-saving sand discharge device according to claim 1, characterized in that: the inclined angle of the sand outlet pipe is 1-15 degrees.

3. The energy-saving sand discharge device according to claim 2, characterized in that: the sand discharge part comprises an outer pipe and an inner pipe, the upper end of the outer pipe is sealed and is internally provided with a communicating cavity, the inner pipe is positioned in the communicating cavity, two ends of the inner pipe are respectively communicated with the air chamber and the communicating cavity, and an air outlet is formed in the side part of the outer pipe.

4. An energy-saving sand discharge device according to claim 3, characterized in that: the air outlet is arranged at the lower part of the side wall of the outer tube.

5. The energy-saving sand discharge device according to claim 4, characterized in that: the wind power generation device also comprises a wind source which is communicated with the wind chamber.

6. The energy-saving sand discharge device according to claim 5, characterized in that: the wind source is a Roots blower.