CN214640063U - Pre-foaming device convenient for discharging and used for lost foam casting - Google Patents

Abstract

The utility model relates to a prefoaming device for lost foam casting, which is convenient for discharging materials, and comprises a heating component, a conveying pipeline and a cutting component; the heating assembly comprises a heating chamber and a stirring piece, and the stirring piece is arranged in the heating chamber; through the work of conveying pipeline combination compressed air pump, it can be fast carries out the quick discharge of the prefoaming material that accomplishes in the heating chamber from the trachea. And the discharged materials enter the cutting chamber, and the agglomerated materials are rapidly cut through the rotating action of the cutting blade, so that uniformly dispersed prefoamed materials are obtained.

Description

Pre-foaming device convenient for discharging and used for lost foam casting

Technical Field

The utility model relates to a prefoaming device, concretely relates to can discharge the material in the prefoaming device fast and transport to the prefoaming device that the convenient disappearance mould of arranging the material of other positions was used for casting.

Background

The application field of the lost foam mold is wider and wider, and the lost foam mold is a novel casting technology with great development prospect. Lost foam molds have many advantages, such as: (1) the lost foam mold casting has the characteristics of accurate size and shape, good copying performance, precision casting and high surface smoothness. (2) The sand core and the core making part are cancelled, and casting defects and waste products caused by core making and core setting are eliminated. (3) The dry sand molding without adhesive, moisture and any additive is adopted, and various casting defects and waste products caused by moisture, additives and adhesive are eliminated. (4) The sand treatment system is greatly simplified, the molding sand can be completely reused, and a molding sand preparation work part and a waste sand main force work part are cancelled.

Prefoaming is one of the essential key steps in lost foam casting. The quality of the pre-foaming is directly related to the quality and accuracy of the outer surface of the casting. With the wide attention of people to the application of the lost foam technology, the attention to the pre-foaming process equipment is also promoted.

However, in the prior art pre-foaming device structure, after pre-foaming, the discharge of the material inside the heating chamber is a troublesome problem, and the discharge rate is not high, which affects the subsequent operation. In addition, lump aggregates are easily formed in the inside of the heating chamber during the pre-foaming process, and the lump aggregates have a certain influence on the subsequent mold foaming process, and if manual cutting is adopted, the crushing efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can carry out quick discharge and carry out the prefoaming device of lost foam casting usefulness of cutting to the material in the heating chamber.

In order to achieve the purpose, the utility model provides a prefoaming device for lost foam casting, which is convenient for discharging materials, and comprises a heating component, a conveying pipeline and a cutting component; the heating assembly comprises a heating chamber and a stirring piece, and the stirring piece is arranged in the heating chamber; the conveying pipeline is provided with a first compressed air pipe, a second compressed air pipe and an air outlet pipe, the upstream ends of the first compressed air pipe and the second compressed air pipe are connected with a compressed air pump, the downstream end of the first compressed air pipe is connected with the heating chamber, and the upstream end of the air outlet pipe is connected with the heating chamber; the cutting assembly has cutting chamber and cutting piece, cutting piece sets up in the cutting chamber, the cutting chamber with the low reaches end of outlet duct links to each other, the lower extreme of cutting chamber has the discharge gate, the discharge gate through first discharging pipe with second compressed air pipe links to each other, just second compressed air pipe still links to each other with the second discharging pipe.

The beneficial effect that above-mentioned scheme produced does: through the work of conveying pipeline combination compressed air pump, it can be fast carries out the quick discharge of the prefoaming material that accomplishes in the heating chamber from the trachea. And the discharged materials enter the cutting chamber, and the agglomerated materials are rapidly cut through the rotating action of the cutting blade, so that uniformly dispersed prefoamed materials are obtained. The materials are discharged to other stations through a first discharge pipe and a second discharge pipe. In some embodiments, if need not carry out the material to relatively higher position and carry, then can save and set up second compressed air pipe, directly discharge cutting chamber exhaust material by first discharging pipe and second discharging pipe promptly, also can accomplish the purpose of the utility model like this, reach corresponding technological effect.

According to a preferable scheme, the conveying pipeline further comprises a back blowing assembly, the back blowing assembly comprises a communicating pipe, a first inserting port, a second inserting port and a third inserting port are formed in the communicating pipe, the first inserting port is connected with the first discharging pipe, the second inserting port is connected with the second compressed air pipe, the third inserting port is connected with the second discharging pipe, and an inserting section of the second compressed air pipe in the second inserting port extends to exceed the first inserting port.

The beneficial effect that above-mentioned scheme produced does: the cut material enters the communicating pipe from the position of the first inserting port along the first discharging pipe, and meanwhile, the second compressed air pipe supplies air flow to the communicating pipe, so that the material in the communicating pipe enters the second discharging pipe along the third inserting port and finally rises to the position of the top outlet. And, because the second compressed air pipe extends beyond first interface at the intraoral inserting section of second interface, consequently can not take place the blowback phenomenon when supplying the air current to the communicating pipe through second compressed air pipe, can not blow the material to the direction of first discharging pipe in reverse direction promptly.

In a preferred scheme, the inner wall of the heating chamber is provided with a water inlet hole, the water inlet hole is provided with an electromagnetic valve, and the water inlet hole is connected with a high-pressure water pump. The water inlet is connected with a three-way valve, one end of the three-way valve is connected with the high-pressure water pump, and the other end of the three-way valve is connected with the air pump.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of a prefoaming apparatus for lost foam casting, which facilitates discharging of materials according to the present invention;

FIG. 2 is a schematic view of the sectional view of the blowback assembly of the pre-foaming device for lost foam casting, which is convenient for discharging.

FIG. 3 is a schematic structural view of a prefoamer of the present invention;

FIG. 4 is a schematic structural view of a prefoamer (part of the casing is omitted) for lost foam casting according to the present invention;

FIG. 5 is a schematic structural view of another perspective of a prefoamer (with part of the casing omitted) for lost foam casting according to the present invention;

FIG. 6 is a schematic structural view of a feeding assembly of a prefoamer for lost foam casting according to the present invention;

FIG. 7 is a schematic structural view of a feeding assembly of a prefoamer for lost foam casting according to the present invention;

FIG. 8 is a schematic structural view of a stirring structure of a prefoamer for lost foam casting according to the present invention;

FIG. 9 is a schematic structural view showing a sectional view of a heating chamber of a prefoamer for lost foam casting according to the present invention;

FIG. 10 is a schematic view of a prefoamer for lost foam casting according to the present invention;

Detailed Description

The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

The first embodiment:

as shown in fig. 1 and 10, the present invention provides a prefoaming device for lost foam casting, which facilitates discharging, and comprises a heating assembly 20, a transfer pipe 30 and a cutting assembly 40.

The heating assembly 20 comprises a heating chamber 21 and a stirring piece 22, wherein the stirring piece 22 is arranged in the heating chamber 21; the conveying pipe 30 has a first compressed air pipe 31, a second compressed air pipe 32 and an air outlet pipe 33, the upstream ends of the first compressed air pipe 31 and the second compressed air pipe 32 are both connected with a compressed air pump 34, the downstream end of the first compressed air pipe 31 is connected with the heating chamber 21, and the upstream end of the air outlet pipe 33 is connected with the heating chamber 21; the cutting assembly 40 has a cutting chamber 41 and a cutting member, the cutting member is disposed in the cutting chamber 41, the cutting chamber 41 is connected to the downstream end of the air outlet pipe 33, the lower end of the cutting chamber 41 has a discharge port, the discharge port is connected to the second compressed air pipe 32 through a first discharge pipe 44, and the second compressed air pipe 32 is further connected to a second discharge pipe 45.

In the specific use process:

s1: putting the material to be prefoamed into the heating chamber 21 for prefoaming;

s2: after the pre-foaming, a valve (e.g., a solenoid valve) is opened, and the compressed air pump 34 is started to supply air to the first compressed air pipe 31, so that the first compressed air pipe 31 supplies air flow into the heating chamber 21;

s3: under the action of pressure, the materials in the heating chamber 21 enter the cutting chamber 41 along the air outlet pipe 33;

s4: cutting the material in the cutting chamber 41 by a cutter to disperse the agglomerated or caked material, and opening a valve at the lower part of the cutting chamber 41;

s5: the cut material is discharged along the first discharge pipe 44 and the second discharge pipe 45 to further stations, and in order to increase the transport distance or height of the material, a second compressed air pipe 32 is provided, which serves to feed the relatively low cut material from the second discharge pipe 45 to a higher station or to a further station.

Preferably, an electromagnetic valve is provided at a position where the first compressed air pipe 31 is connected to the heating chamber 21, a valve is provided at a position where the air outlet pipe 33 is connected to the cutting chamber 41, a valve is provided at a position where the air outlet pipe 33 is connected to the heating chamber 21, and a valve is provided at a position where the first discharge pipe 44 is connected to the discharge port.

Second embodiment:

as shown in fig. 2, the conveying pipe further includes a blowback assembly 50, the blowback assembly 50 includes a communicating pipe 54, the communicating pipe 54 has a first connection port 51, a second connection port 52 and a third connection port 53, the first connection port 51 is connected to the first discharging pipe 44, the second connection port 52 is connected to the second compressed air pipe 32, the third connection port 53 is connected to the second discharging pipe 45, and an insertion section 55 of the second compressed air pipe 32 in the second connection port 52 extends beyond the first connection port 51.

The cut material enters the communicating tube 54 from the position of the first socket 51 along the first discharge pipe 44, and at the same time, the second compressed air tube 32 supplies air into the communicating tube 54, so that the material in the communicating tube 54 enters the second discharge pipe 45 along the third socket 53 and finally rises to the top position. Moreover, since the insertion section 55 of the second compressed air pipe 32 in the second insertion port 52 extends beyond the first insertion port 51, no blowback phenomenon occurs when the air flow is supplied into the communication pipe 54 through the second compressed air pipe 32, i.e., the material is not blown back in the direction of the first discharging pipe 44.

The third embodiment:

as shown in fig. 3 to 6, the present invention provides a prefoamer for lost foam casting, which comprises a housing 1, a feeding assembly 10, a heating assembly 20, a conveying pipeline 30 and a cutting assembly 40.

The housing 1 has a top wall 2, the top wall 2 having a feed port 3 and an outlet 6; the feeding assembly 10 is arranged inside the casing 1 and below the feeding port 3. The heating assembly 20 is connected with the feeding assembly 10, the heating assembly 20 comprises a heating chamber 21 and a stirring piece 22, and the stirring piece 22 is arranged in the heating chamber 21; the transfer duct 30 has a first compressed air pipe 31, a second compressed air pipe 32, and an air outlet pipe 33, and the upstream ends of the first and second compressed air pipes 31 and 32 are each connected to a compressed air pump 34, and the compressed air pumps 34 may be two independent pumps. The downstream end of the first compressed air pipe 31 is connected to the heating chamber 21, and the upstream end of the air outlet pipe 33 is connected to the heating chamber 21; the cutting assembly 40 has a cutting chamber 41 and a cutting member 42, the cutting member 42 is disposed in the cutting chamber 41, the cutting chamber 41 is connected to the downstream end of the air outlet pipe 33, the lower end of the cutting chamber 41 has a discharge port 43, the discharge port 43 is connected to the second compressed air pipe 32 through a first discharge pipe 44, and the second compressed air pipe 32 is further connected to a second discharge pipe 45.

The invention provides a working method of a prefoamer for lost foam casting, which comprises the following steps:

s1: adding the material to be pre-foamed into the feeding port 3, and moving the material into the feeding component 10;

s2: the material enters the heating assembly 20, specifically the heating chamber 21, from the feeding assembly 10;

s3: starting heating operation to raise the temperature in the heating chamber 21 to a required temperature;

s4: the materials in the heating chamber 21 are stirred and turned over by the stirring piece 22, and a pre-foaming process is carried out at the same time;

s5: stopping the pre-foaming process, starting the compression air pump 34 to work, so that the first compressed air pipe 31 supplies positive pressure air flow into the heating chamber 21, and the material in the heating chamber 21 moves in the downstream direction along the air outlet pipe 33 under the driving of the positive pressure air flow;

s6: the material is transferred into the cutting chamber 41 of the cutting assembly 40 along the air outlet pipe 33, and the cutting member 42 performs a cutting operation on the material in the cutting chamber 41; the purpose of the cutting operation is to cut down a portion of the material that forms a stick or lump, which is advantageous for the subsequent foaming process.

S7: the cut material enters the second compressed air pipe 32 along the first discharge pipe 44, and positive pressure is provided to the second compressed air pipe 32 through another compressed air pump 34, so that the second compressed air pipe 32 drives the cut material to be discharged from the outlet 6 of the top wall 2 along the second discharge pipe 45. Another process after pre-foaming is a foaming process, which is usually completed by a corresponding foaming mold.

The fourth embodiment:

as shown in fig. 6 and 7, the feeding assembly 10 has a feeding barrel 9, a three-way pipe 11, a buffer barrel 12, a receiving hopper 13 and a feeding pipe 14 which are connected in sequence, and the downstream end of the feeding pipe 14 is connected with a heating chamber 21; the three-way pipe 11 comprises a first branch pipe 15, a second branch pipe 16 and a third branch pipe 17, the first branch pipe 15 is connected with a barrel outlet 8 of the feeding barrel 9, the second branch pipe 16 is connected with the buffering barrel 12, the third branch pipe 17 is connected with a material return pipe 18, and the tail end of the material return pipe 18 extends to the outside of the machine shell 1. The top wall 2 has an outlet 6, and a second outlet pipe 45 extends from the outlet 6 to the outside of the casing 1;

a first valve is arranged on the second branch pipe 16, a second valve is arranged on the third branch pipe 17, the first valve is provided with a first air cylinder 161 and a first plug plate, the first plug plate is arranged on the second branch pipe 16, the second valve is provided with a second air cylinder 171 and a second plug plate, and the second plug plate is arranged on the third branch pipe 17; a buffer valve is arranged in the buffer barrel 12, the buffer valve is provided with a third cylinder and a closing plate, and the closing plate 122 is provided with a weighing unit;

the working method comprises the following steps:

y1: the material enters the feeding barrel 9 and then enters the three-way pipe 11;

y2: opening a first valve of the second branch pipe 16, namely, controlling the first inserting plate through the first air cylinder 161 to enable the second branch pipe 16 to be in an open state, so that the materials enter the buffer barrel 12;

y3, weighing the materials in the buffer barrel 12 through the weighing unit, and then opening the buffer valve, namely, opening the channel of the buffer barrel 12 through the third cylinder control closing plate to enable the materials to enter the receiving hopper 13;

y4: the materials enter the heating chamber 21 from the receiving hopper 13;

y5: when the material is not required to be added into the buffer barrel 12, the second valve is opened, that is, the second cylinder 171 controls the second inserting plate to open the third branch pipe 17, so that the material in the material inlet barrel 9 is discharged from the material return pipe 18 and recycled.

Fifth embodiment:

as shown in fig. 8 and 9, as a preferred embodiment, the stirrer 22 of the present embodiment has a stirrer motor 221 and a stirrer bar connected in sequence, the stirrer bar has a shaft 222 and a plate body, the plate body includes a plurality of vertical plates 223 provided perpendicular to the shaft 222 and horizontal plates 224 arranged in parallel with the shaft 222, and the horizontal plates 224 are spaced from the inner wall surface of the heating chamber 21 by a distance of 1 cm or less.

The heating chamber 21 comprises a multilayer structure 25, wherein the multilayer structure 25 is provided with a stainless steel layer 26, a heat preservation layer 27, a heating film layer 28 and an aluminum shell layer 29 from outside to inside in sequence; the prefoaming machine for lost foam casting also comprises a video monitoring device, wherein the video monitoring device comprises a camera, a controller and a display screen 24 which are sequentially connected, the camera is arranged in the heating chamber 21, and the display screen 24 is arranged on the outer wall 4 of the machine shell 1. The heating film 28 is preferably a resistance wire structure that is electrically heated by means of an electrical power supply. The heat insulation layer 27 is made of a heat insulation structure in the prior art, such as an asbestos heat insulation layer.

The working method comprises the following steps: heat is supplied by the heating film layer 28, the heat rapidly heats the materials in the aluminum shell layer 29, the heat is insulated by the insulating layer 27, and the stainless steel layer 26 provides a stable structure and is easy to fix; further, the internal environment of the heating chamber 21 is imaged by the camera, and the working environment in the heating chamber 21 is displayed by the display screen 24.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims (4)

1. The utility model provides a make things convenient for prefoaming device of lost foam casting usefulness of arranging material which characterized in that includes:

the heating assembly comprises a heating chamber and a stirring piece, and the stirring piece is arranged in the heating chamber;

the conveying pipeline is provided with a first compressed air pipe, a second compressed air pipe and an air outlet pipe, the upstream ends of the first compressed air pipe and the second compressed air pipe are connected with a compressed air pump, the downstream end of the first compressed air pipe is connected with the heating chamber, and the upstream end of the air outlet pipe is connected with the heating chamber;

cutting assembly, cutting assembly has cutting chamber and cutting piece, cutting piece sets up in the cutting chamber, the cutting chamber with the low reaches end of outlet duct links to each other, the lower extreme of cutting chamber has the discharge gate, the discharge gate through first discharging pipe with the second compressed air pipe links to each other, just the second compressed air pipe still links to each other with the second discharging pipe.

2. The pre-foaming apparatus for lost foam casting facilitating the discharge according to claim 1,

the conveying pipeline further comprises a back-blowing assembly, the back-blowing assembly comprises a communicating pipe, a first inserting port, a second inserting port and a third inserting port are formed in the communicating pipe, the first inserting port is connected with the first discharging pipe, the second inserting port is connected with the second compressed air pipe, the third inserting port is connected with the second discharging pipe, and the second compressed air pipe is located in an inserting section in the second inserting port and extends beyond the first inserting port.

3. The pre-foaming device for lost foam casting facilitating discharging of the material as claimed in claim 1, wherein the heating chamber has a water inlet hole on the inner wall thereof, the water inlet hole having an electromagnetic valve, the water inlet hole being connected to a high pressure water pump.

4. The pre-foaming apparatus for lost foam casting facilitating the discharge according to claim 3,

the water inlet is connected with a three-way valve, one end of the three-way valve is connected with the high-pressure water pump, and the other end of the three-way valve is connected with the air pump.

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