Multi-stage material distributing device

Abstract

The utility model discloses a multi-stage material distributing device which is arranged in a steel shot box, the bottom of the steel shot box is provided with a material conveying pipe, the steel shot box is fed through a first spiral feeder, the multi-stage material distributing device further comprises a grading feeder, the material conveying pipe is of a funnel-shaped structure, the grading feeder comprises an inner hopper frame arranged in the material conveying pipe, the inner side of the inner hopper frame is provided with a temperature detector, and the temperature detector is connected with the inner hopper frame. An inner circulation channel is formed between the inner hopper frame and the material conveying pipe, a positive and negative flow driving structure is arranged in the inner circulation channel, an electromagnetic valve is arranged at an opening of the material conveying pipe, when the temperature detector detects that the temperature is consistent, the electromagnetic valve is opened, and the material conveying pipe performs normal discharging, and when the temperature detector detects that the temperature is higher than a set value, the electromagnetic valve is closed; the positive and negative flow driving structure conveys the steel shots which do not meet the requirement into the left cavity of the steel shot box, and when the temperature of the steel shots does not reach the standard, the steel shots can be reversely conveyed to the corresponding positions to be cooled again, so that the temperature of the steel shots in the box burying process always meets the requirement.

Description

Technical Field

[0001] The utility model relates to a steel shot feeding structure in a casting device, in particular to a multi-stage feeding device. Background Art

[0002] Sand casting refers to a casting method that produces castings in sand molds. Since the molding materials used in sand casting are cheap and easy to obtain, and the molds are simple to manufacture, it is adaptable to single-piece production, batch production, and mass production of castings. Steel, iron, and most non-ferrous alloy castings can be obtained by sand casting. In the production and casting of containers, sand casting is also used. The sand mold is prefabricated into the style of corner pieces, and then the molten steel is poured into the sand mold to cool. After cooling, the formed container corner pieces can be obtained.

[0003] In the prior art, before pouring molten steel, the mold needs to be buried in a landfill box, and the sand mold is cooled by the steel shots in the landfill box, thereby conducting the heat during the molding of the corner piece to the inside of all the steel shots. The steel shots need to be recovered after heating and wait for secondary utilization. All the recovered steel shots will be stored in a steel shot warehouse, where they will be cooled before being used. When the steel shots are unloaded, if the temperature of the steel shots is too high, it will affect the production efficiency and quality both when burying the shell and when pouring. Utility Model Content

[0004] The utility model provides a multi-stage material distribution device, which can reversely transport the steel shots to corresponding positions for re-cooling when the temperature of the steel shots does not meet the standard, so that the temperature of the steel shots when buried in the box always meets the requirements.

[0005] The utility model is achieved in this way:

[0006] A multi-stage material distribution device is arranged in a steel shot box, a feeding pipe is arranged at the bottom of the steel shot box, and the steel shot box is fed by a first screw feeder, and further comprises:

[0007] A grading feeder, wherein the feed pipe is a funnel-shaped structure, and comprises an inner bucket frame arranged in the feed pipe, a temperature detector is arranged on the inner side of the inner bucket frame, an inner circulation channel is formed between the inner bucket frame and the feed pipe, a positive and negative flow driving structure is arranged in the inner circulation channel, and an electromagnetic valve is arranged at the opening of the feed pipe, when the temperature detector detects that the temperature meets the requirements, the electromagnetic valve opens, and the feed pipe discharges normally, when the temperature detector detects that the temperature is higher than the set value, the electromagnetic valve closes, and the positive and negative flow driving structure transports the steel shots that do not meet the requirements to the left chamber of the steel shot box.

[0008] As a further improvement, the forward and reverse flow driving structure includes a sealing and pushing member arranged on the inner wall of the steel shot box, the sealing and pushing member is located at the upper edge of the inner bucket frame, and the sealing and pushing member is used to open and close the upper edge of the inner circulation channel.

[0009] As a further improvement, the forward and reverse flow driving structure also includes a third screw feeder arranged in the inner circulation channel. When the sealing and pushing member is opened, the third screw feeder rotates forward to transport the steel shots in the inner circulation channel to the feed pipe. When the sealing and pushing member is closed, the third screw feeder rotates reversely to transport the steel shots in the feed pipe to the left chamber of the steel shot box.

[0010] As a further improvement, a plurality of feeding belts are provided at the unloading end of the third screw feeder, and the feeding belts extend to the first screw feeder.

[0011] As a further improvement, a plurality of feeding troughs are provided on one side of the steel shot box close to the first screw feeder, a plurality of discharging troughs are provided on the first screw feeder, a discharging switch is provided on the discharging trough, and the temperature detector detects the temperature range corresponding to the steel shot to be recycled and turns on the corresponding discharging switch.

[0012] The beneficial effects of the utility model are:

[0013] During the feeding stage of steel shots, if the temperature of the steel shots discharged into the landfill box does not meet the requirements, it will directly affect the production of the products. For example, the surface of the corner pieces may have burrs or depressions, and it is extremely easy to cause the same condition in the entire batch, which often causes a large number of products to appear after being discovered. Therefore, the utility model is provided with a graded feeder. When the steel shots are discharged through the feed pipe, they need to pass through the temperature detector. In the normal stage, that is, when the temperature of the steel shots meets the detection requirements of the temperature detector, the forward and reverse flow driving structure is in a forward rotation mode, that is, the steel shots falling into the inner circulation channel will be transported downward to the position of the feed pipe. At this time, since the solenoid valve is normally opened, the feeding can be normally discharged. When the temperature of the steel shots does not meet the detection requirements of the temperature detector, the solenoid valve is automatically closed, and the forward and reverse flow driving structure is reversed to transport the steel shots retained at the feed pipe to the outside, and the equipment is shut down for cooling, so that the temperature of the steel shots outputting the equipment always meets the requirements.

[0014] There is actually a certain gap between the inner bucket frame and the feed pipe, namely the inner circulation channel. In order to make full use of this gap and increase the storage capacity of steel shots, this gap also accommodates steel shots in the normal stage. It can transport the steel shots to the position of the feed pipe as the third screw feeder rotates forward, thereby avoiding the accumulation of steel shots. In the stage when the temperature is not suitable, the gap between the inner bucket frame and the feed pipe can be sealed by the sealing and pushing member to prevent the steel shots from falling from this position and affecting the reversed third screw feeder.

[0015] The utility model arranges the third screw feeder in the gap between the inner bucket frame and the feed pipe, so that the motor driving the third screw feeder can rotate forward and reverse, and the logic of the forward and reverse switching of the motor is carried out according to the detection data of the temperature detector, so that the motor can rotate in different directions at different stages to achieve different purposes.

[0016] Since the temperature of the steel shots after being reversed by the third spiral feeder does not meet the requirements, they need to return to the front section for re-cooling. Therefore, the utility model arranges a feeding belt on the basis of the third spiral feeder, which can transport the steel shots that do not meet the temperature requirements back to the position of the first spiral feeder through the arrangement of several feeding belts, and then enter the feeding pipe after being cooled again.

[0017] The steel shots transported back to the first screw feeder do not all enter through the inlet at the top of the steel shot box in the same way due to their different temperatures. To this end, the utility model provides a plurality of feeding troughs on the steel shot box, and discharges at different positions through the discharge trough on the first screw feeder, so that the steel shots can be output to corresponding areas, avoiding mixing of steel shots with large temperature differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The utility model is a structural schematic diagram of a multi-stage material distribution device.

[0020] Figure 2 The utility model is a structural schematic diagram of a grading feeder and a steel shot box.

[0021] Figure 3 The utility model is a structural schematic diagram of the cooperation between a feeding chute and a discharging chute.

[0022] In the figure:

[0023] The first screw feeder 20 , the discharge trough 21 , the steel shot box 30 , the feed trough 301 , the feed pipe 34 , the inner bucket frame 41 , the temperature detector 42 , the inner circulation channel 43 , the forward and reverse flow driving structure 44 , the sealing and pushing member 441 , the third screw feeder 442 , and the feed belt 443 . DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0025] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] Reference Figure 1 to Figure 3 As shown, a multi-stage material distribution device is arranged in a steel shot box 30, and a feeding pipe 34 is arranged at the bottom of the steel shot box 30. The steel shot box 30 is fed by a first screw feeder 20, and also includes: a graded feeder, the feeding pipe 34 is a funnel-shaped structure, the graded feeder includes an inner bucket frame 41 arranged in the feeding pipe 34, a temperature detector 42 is arranged on the inner side of the inner bucket frame 41, an inner circulation channel 43 is formed between the inner bucket frame 41 and the feeding pipe 34, a positive and negative flow driving structure 44 is arranged in the inner circulation channel 43, and an electromagnetic valve is arranged at the opening of the feeding pipe 34. When the temperature detector 42 detects that the temperature meets the requirements, the electromagnetic valve opens, and the feeding pipe 34 discharges normally. When the temperature detector 42 detects that the temperature is higher than the set value, the electromagnetic valve closes, and the positive and negative flow driving structure 44 conveys the steel shots that do not meet the requirements to the left chamber of the steel shot box 30.

[0027] In this case, there are multiple screw feeders, all of which adopt existing feeders, which can convey light steel shots without damaging the spiral blades. In this embodiment, the particle size of the steel shots is 2.5 to 3.5 cm.

[0028] In this embodiment, the temperature detector 42 is a temperature sensor.

[0029] During the feeding stage of the steel shots, if the temperature of the steel shots discharged into the landfill box does not meet the requirements, it will directly affect the production of the products. For example, the surface of the corner pieces may have burrs or depressions, and it is extremely easy to cause the same condition in the entire batch, which often causes a large number of products to appear after being discovered. Therefore, the present embodiment is provided with a graded feeder. When the steel shots are discharged through the feed pipe 34, they need to pass through the temperature detector 42. In the normal stage, that is, when the temperature of the steel shots meets the detection requirements of the temperature detector 42, the forward and reverse flow driving structure 44 is in a forward rotation mode, that is, the steel shots falling into the inner circulation channel 43 will be transported downward to the position of the feed pipe 34. At this time, since the solenoid valve is normally opened, the material can be discharged normally. When the temperature of the steel shots does not meet the detection requirements of the temperature detector 42, the solenoid valve is automatically closed, and the forward and reverse flow driving structure 44 is reversed to transport the steel shots retained in the feed pipe 34 to the outside, and the equipment is shut down for cooling, so that the temperature of the steel shots output from the equipment always meets the requirements.

[0030] There is actually a certain gap between the inner bucket frame 41 and the feed pipe 34, namely the inner circulation channel 43. In order to make full use of this gap and increase the storage capacity of steel shots, this gap also accommodates steel shots in the normal stage, and it can transport the steel shots to the position of the feed pipe 34 as the third spiral feeder 442 rotates forward, thereby avoiding the accumulation of steel shots. In the stage where the temperature is not suitable, the forward and reverse flow driving structure 44 of this embodiment includes a sealing push member 441 arranged on the inner wall of the steel shot box 30, and the sealing push member 441 is located at the upper edge of the inner bucket frame 41. The sealing push member 441 is used to open and close the upper edge of the inner circulation channel 43, and the gap between the inner bucket frame 41 and the feed pipe 34 can be sealed by the sealing push member 441 to prevent the steel shots from falling from this position and to avoid affecting the reversed third spiral feeder 442. Among them, the sealing push member 441 is a hydraulic push rod in the prior art, and the hydraulic push rod is connected to a closing plate, and the hydraulic push rod has a strong pressure bearing capacity.

[0031] The forward and reverse flow driving structure 44 in this embodiment also includes a third screw feeder 442 arranged in the inner circulation channel 43. When the sealing and pushing member 441 is opened, the third screw feeder 442 rotates forward to transport the steel shots in the inner circulation channel 43 to the feed pipe 34. When the sealing and pushing member 441 is closed, the third screw feeder 442 reverses to transport the steel shots in the feed pipe 34 to the left chamber of the steel shot box 30. By arranging the third screw feeder 442 in the gap between the inner bucket frame 41 and the feed pipe 34, the motor driving the third screw feeder 442 can rotate forward and reverse. The logic of the forward and reverse switching of the motor is carried out according to the detection data of the temperature detector 42, so that it can rotate in different directions at different stages to achieve different purposes.

[0032] Since the temperature of the steel shots after being reversed by the third screw feeder 442 does not meet the requirements, they need to return to the front section for further cooling. Therefore, the unloading end of the third screw feeder 442 of this embodiment is provided with a plurality of feeding belts 443, and the feeding belts 443 extend to the first screw feeder 20. By providing the feeding belts 443 on the basis of the third screw feeder 442, the steel shots that do not meet the temperature requirements can be transported back to the first screw feeder 20 through the provision of several sections of the feeding belts 443, and then enter the delivery pipe 34 after being re-cooled. The feeding belt 443 is provided with more than one section, and it needs to be reversed and lifted, so as to accurately transport the steel shots to the feed port of the first screw feeder 20. In the figure, only one section of the feeding belt 443 can be seen. In fact, multiple sections of the feeding belts 443 need to be provided to transport the steel shots to the first screw feeder 20.

[0033] The steel shots transported back to the first screw feeder 20 do not enter the steel shot box 30 through the uppermost inlet in the same way due to their different temperatures. In this regard, the steel shot box 30 of this embodiment is provided with a plurality of feeding troughs 301 on the side close to the first screw feeder 20, and the first screw feeder 20 is provided with a plurality of discharging troughs 21, and the discharging troughs 21 are provided with a discharging switch. The temperature detector 42 detects the temperature range corresponding to the steel shots to be recycled and turns on the corresponding discharging switch. A plurality of feeding troughs 301 are provided on the steel shot box 30, and the discharging at different positions is performed through the discharging troughs 21 on the first screw feeder 20, so that the steel shots can be output to the corresponding areas, thereby avoiding the mixing of steel shots with large temperature differences. The discharging switch can provide a certain feeding pressure, so that the steel shots can smoothly enter the corresponding areas.

[0034] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-stage material distribution device, arranged in a steel shot box (30), characterized in that: A feeding pipe (34) is provided at the bottom of the steel shot box (30), and the steel shot box (30) is fed with materials through a first screw feeder (20), and further comprises: A grading feeder, wherein the feed pipe (34) is a funnel-shaped structure, and comprises an inner bucket frame (41) arranged in the feed pipe (34), a temperature detector (42) is arranged on the inner side of the inner bucket frame (41), an inner circulation channel (43) is formed between the inner bucket frame (41) and the feed pipe (34), a positive and negative flow driving structure (44) is arranged in the inner circulation channel (43), and an electromagnetic valve is arranged at the opening of the feed pipe (34), when the temperature detector (42) detects that the temperature meets the requirements, the electromagnetic valve opens, and the feed pipe (34) discharges materials normally, and when the temperature detector (42) detects that the temperature is higher than the set value, the electromagnetic valve closes, and the positive and negative flow driving structure (44) transports the steel shots that do not meet the requirements to the left chamber of the steel shot box (30).

2. A multi-stage material distribution device according to claim 1, characterized in that: The positive and negative flow driving structure (44) comprises a sealing and pushing member (441) arranged on the inner wall of the steel shot box (30), the sealing and pushing member (441) is located at the upper edge of the inner bucket frame (41), and the sealing and pushing member (441) is used to open and close the upper edge of the inner circulation channel (43).

3. A multi-stage material distribution device according to claim 2, characterized in that: The forward and reverse flow driving structure (44) further comprises a third screw feeder (442) arranged in the inner circulation channel (43); when the sealing and pushing member (441) is opened, the third screw feeder (442) rotates forward to transport the steel shots in the inner circulation channel (43) to the feed pipe (34); when the sealing and pushing member (441) is closed, the third screw feeder (442) rotates reversely to transport the steel shots in the feed pipe (34) to the left chamber of the steel shot box (30).

4. A multi-stage material distribution device according to claim 3, characterized in that: A plurality of feeding belts (443) are provided at the unloading end of the third screw feeder (442), and the feeding belts (443) extend to the first screw feeder (20).

5. A multi-stage material distribution device according to claim 1, characterized in that: The steel shot box (30) is provided with a plurality of feeding troughs (301) on one side close to the first screw feeder (20), the first screw feeder (20) is provided with a plurality of discharging troughs (21), and the discharging troughs (21) are provided with discharging switches. The temperature detector (42) detects the temperature range corresponding to the steel shots to be recycled and turns on the corresponding discharging switch.

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