Recovered sand storage cylinder

Abstract

The utility model discloses a recovered sand storage cylinder which comprises a sand bin, a sand inlet pipe connected to the top of the sand bin and a sand outlet pipe connected to the bottom of the sand bin, and further comprises a multi-temperature-zone discharging mechanism, the interior of the sand bin is divided into a plurality of sand storage zones, and temperature sensors are arranged in the sand storage zones; the temperature sensor collects the molding sand temperature of different sand storage areas and feeds back the molding sand temperature to the terminal; the multi-temperature-area discharging mechanism comprises a plurality of one-way feeding pieces arranged in the lateral direction of the sand storage areas; the single-area sand discharging structure comprises a plurality of partition plates fixedly connected in the sand bin, the two sand storage areas are separated through the partition plates, discharging holes are formed in the partition plates, the adjacent sand storage areas are communicated through the discharging holes, a material pushing part is arranged in each sand storage area, a material pushing plate is locked at the output end of each material pushing part, and the top of each material pushing plate is connected with a bearing top plate. According to the utility model, the molding sand after preliminary roasting can be utilized in the most adaptive manner.

Description

Technical Field

[0001] The utility model relates to molding sand recovery equipment, in particular to a recovery sand storage cylinder. Background Art

[0002] Molding sand is the main modeling material in casting production. It is a material used to make sand molds and sand cores in casting production. It is mainly composed of raw sand for casting, molding sand binder, additives and a certain proportion of water. It plays a vital role in casting production. Its quality directly affects the quality of castings. In the casting process, molding sand is used to form molds for castings. High-quality molding sand has high strength, thermal stability, good fluidity, plasticity, air permeability and disintegration. The consumption of molding sand is extremely large. After production is completed, waste sand will be mixed and bonded with water glass to form a kind of agglomerate, which is doped with iron powder and other impurities. When recycling, if it is not recycled, the cost of using sand will be extremely high for the enterprise, and the cost of waste disposal will also be borne. If it is recycled, in the waste disposal stage, if it is not properly treated and directly discarded as waste, it is easy to pollute the environment.

[0003] In the recycling process of the prior art, waste sand is often collected, and after a certain amount is collected, it is uniformly recycled. In the recycling stage, the waste sand needs to be preliminarily roasted, and the roasted molding sand is stored in a sand warehouse. When sand is needed, the discharge valve at the bottom is directly opened to discharge the sand. However, this discharge method can only output the molding sand at the bottom. The molding sand at the bottom has the longest storage time and is actually at a lower temperature. Direct use requires sufficient heating, and a separate heating step is required, which is not only time-consuming and labor-intensive, but also consumes certain energy costs. Utility Model Content

[0004] The utility model provides a recovered sand storage cylinder, which can select molding sand in different temperature ranges according to the needs of the reaction without affecting the storage of molding sand in other ranges, so that the molding sand after preliminary roasting can be used in the most suitable way.

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

[0006] A recovered sand storage cylinder comprises: a sand storage, a sand inlet pipe connected to the top of the sand storage, a sand outlet pipe connected to the bottom of the sand storage, and further comprising:

[0007] A multi-temperature zone unloading mechanism, wherein the sand storage is divided into several sand storage areas, each of which is provided with a temperature sensor, which collects the molding sand temperature of different sand storage areas and feeds back to the terminal, and the multi-temperature zone unloading mechanism comprises several one-way feeding parts arranged on the sides of several of the sand storage areas;

[0008] The single-zone sand discharge structure comprises a plurality of partition plates fixedly connected in the sand storage, wherein two sand storage areas are separated by a partition plate, a discharge hole is provided on the partition plate, and adjacent sand storage areas are connected through the discharge hole, a pushing piece is provided in the sand storage area, a pushing plate is locked on the output end of the pushing piece, and the top of the pushing plate is connected to a load-bearing top plate.

[0009] As a further improvement, the one-way feeding part includes an external docking sleeve fixedly connected to the outside of the sand storage, the external docking sleeve is hollow, a one-way folding piece is arranged inside the external docking sleeve, and the one-way folding piece is hinged to the inner wall of the external docking sleeve through a plurality of torsion springs.

[0010] As a further improvement, a plurality of limit blocks are provided at one end of the external butt joint sleeve away from the sand reservoir, and the limit blocks block the one-way folding piece when it is turned outward.

[0011] As a further improvement, the outer butt joint sleeve is arranged to be tilted downward, and the angle between the outer butt joint sleeve and the horizontal plane is 135-150°.

[0012] As a further improvement, the load-bearing top plate is located on the left side of the bottom of the discharge hole. Once the pushing member moves, the load-bearing top plate immediately closes the discharge hole.

[0013] The beneficial effects of the utility model are:

[0014] In the existing sand storage structure, it often only plays the role of storage. The crushed and screened molding sand is piled up in a separate chamber for storage. Although this can provide a storage space for the molding sand, it will cause the molding sand after preliminary roasting to lose heat. Each time the molding sand is used, the molding sand at the bottom is used, and a separate molding sand heating step is required, and the energy utilization rate is low. In this regard, the utility model adds a multi-temperature zone unloading mechanism. First, the sand storage is divided into several areas. Different areas accommodate different batches of molding sand, that is, molding sand of different temperatures, and different one-way feeding parts are opened in different areas. When the sand mixer needs molding sand of corresponding temperature, the external material receiving structure is moved to the corresponding sand storage area, so that the external material receiving structure and the one-way feeding part are matched, so that the molding sand in the corresponding area flows into the sand mixer through the one-way feeding part and the external material receiving structure. Since the molding sand at this time has a certain temperature, it directly meets the conditions for sand mixing, so there is no need to perform separate heating, which not only saves time and effort, but also saves energy costs.

[0015] However, if the above-mentioned material discharge method is adopted, in the process of feeding the molding sand through the one-way feeding piece, the molding sand on the top will continuously leak out, thereby mixing the molding sand in different temperature ranges together, resulting in temperature chaos of the molding sand. When the sand mixer reacts, the fed molding sand will not meet the requirements due to inappropriate temperature, which directly affects the quality of the mold. Therefore, the utility model provides a single-zone sand discharge structure on the basis of the multi-temperature zone feeding mechanism. When the one-way feeding piece starts to leak sand after the one-way feeding piece is docked with the docking piece, the pushing piece is pushed out synchronously, not only pushing the molding sand to one side of the one-way feeding piece through the pushing plate, but also closing the upper discharge hole through the load-bearing top plate, so as to avoid interference caused by the falling of the upper layer of molding sand during the sand discharge process, so that the temperature of the molding sand input into the sand mixer meets the expectations, and no unnecessary processing is required, and it can be directly used for mixing and stirring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a recovered sand storage cylinder of the utility model.

[0018] Figure 2 It is a front view schematic diagram of a recovered sand storage cylinder of the utility model.

[0019] Figure 3 The utility model is a schematic diagram of the structure of a recovered sand storage cylinder viewed from above.

[0020] Figure 4 This utility model Figure 3 Cross-section view at AA in the middle.

[0021] Figure 5 It is a structural schematic diagram of a one-way feeding piece of the utility model.

[0022] Figure 6 The utility model is a structural schematic diagram of a multi-temperature zone feeding mechanism. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] Reference Figure 1 to Figure 6As shown, a recovered sand storage cylinder is connected to a crusher for crushing waste sand, the crusher is connected to a screening machine, the screening machine is connected to a preliminary roasting furnace, the preliminary roasting furnace is connected to a sand warehouse 10, the top of the sand warehouse 10 is connected to a sand inlet pipe 11, the bottom of the sand warehouse 10 is connected to a sand outlet pipe 12, characterized in that the foundry waste sand regeneration equipment also includes: a multi-temperature zone feeding mechanism, the sand warehouse 10 is divided into a plurality of sand storage areas, the interior of the sand storage area is provided with a temperature sensor, the sand storage area A guide frame 13 is welded on the outer side of the multi-temperature zone unloading mechanism, the multi-temperature zone unloading mechanism includes a plurality of one-way feeding members 21 arranged on the side of the plurality of sand storage areas, a displacement member 22 is movably mounted on the guide frame 13, two power members 23 are arranged on the side of the displacement member 22 facing the one-way feeding member 21, a docking member 24 is fixedly connected to the power member 23, a discharge conduit 25 is arranged on the side of the displacement member 22 away from the one-way feeding member 21, the discharge conduit 25 is connected to the sand mixer, and the temperature sensor collects the temperature of different sand storage areas. After the molding sand temperature is measured, it is fed back to the terminal. After the terminal controls the displacement member 22 to move to the sand storage area with the required temperature, the power member 23 connects the docking member 24 to the corresponding one-way feeding member 21, so that the molding sand that meets the temperature requirements passes through the one-way feeding member 21 and enters the docking member 24, and then is input into the sand mixer through the discharge conduit 25; the single-zone sand discharge structure includes a plurality of partition plates 31 fixedly connected to the sand storage 10, and the two sand storage areas are separated by the partition plate 31, and the partition plate 31 is provided with a discharge hole 311, and the adjacent sand storage areas are The zone is connected through a discharge hole 311, and a pushing piece 32 is arranged in the sand storage area. A pushing plate 33 is locked on the output end of the pushing piece 32, and the top of the pushing plate 33 is connected to a load-bearing top plate 34. The pushing piece 32 is electrically connected to the power piece 23. When the power piece 23 pushes the docking piece 24 into the one-way feeding piece 21, the pushing piece 32 pushes out the pushing plate 33 and the load-bearing top plate 34, and the load-bearing top plate 34 blocks the discharge hole 311 on the partition plate 31, and the pushing plate 33 pushes the molding sand into the one-way feeding piece 21.

[0026] In this embodiment, the sand storage area can be divided into multiple areas, for example, it can be divided into a 50°C area, a 40°C area, and a 35°C area. The raw material temperature commonly used in the sand mixer is used to require the storage temperature of the sand storage area. If necessary, a heating structure can be set around the sand storage area to ensure the temperature of the sand storage area.

[0027] In this embodiment, a heat-insulating layer is provided inside the sand storage area, thereby reducing the temperature decay of the molding sand and avoiding a large amount of heat loss. During the storage stage of the molding sand, the temperature is monitored in real time by a temperature sensor.

[0028] In the existing sand storage 10 structure, it is often only used for storage. The crushed and screened molding sand is piled up in a separate chamber for storage. Although this can provide a storage space for the molding sand, it will cause the molding sand after preliminary roasting to lose heat. Each time the molding sand is used, the molding sand at the bottom is used, and a separate molding sand heating step is required. The energy utilization rate is low. In this regard, the present embodiment adds a multi-temperature zone feeding mechanism. First, the sand storage 10 is divided into several areas. Different areas accommodate different batches of molding sand, that is, different Temperature of molding sand, and different one-way feeding parts 21 are opened in different areas. When the sand mixer needs molding sand of corresponding temperature, the displacement part 22 is moved to the corresponding sand storage area, and the power part 23 pushes the docking part 24 out, so that the docking part 24 is matched with the one-way feeding part 21, so that the molding sand in the corresponding area flows into the sand mixer through the one-way feeding part 21, the docking part 24, and the discharge conduit 25. Since the molding sand at this time has a certain temperature, it directly meets the conditions for sand mixing, so there is no need to perform separate heating, which not only saves time and effort, but also saves energy costs.

[0029] In the normal stage, that is, when the docking piece 24 has not yet docked with the one-way feeding piece 21, the one-way feeding piece 21 needs to remain sealed to prevent the internal molding sand from leaking out when it is not needed to be output. However, it needs to be docked with the outside world during the output stage. Therefore, the one-way feeding piece 21 in this embodiment includes an external docking sleeve 211 fixedly connected to the outside of the sand storage 10. The external docking sleeve 211 is hollow, and a one-way folding piece 212 is arranged inside the external docking sleeve 211. The one-way folding piece 212 is hinged to the inner wall of the external docking sleeve 211 through a plurality of torsion springs. The end of the external docking sleeve 211 away from the sand storage 10 is provided with a plurality of limit blocks 2 13. The limit block 213 blocks the one-way folding piece 212 when it is turned outward. By setting the one-way feeding piece 21 as a one-way structure, it can only be turned inward but not outward, so that it will not leak out when the internal molding sand produces pressure on it. However, it needs to be docked when the docking piece 24 is pushed in. Therefore, the one-way folding piece 212 is set to be hinged inwardly, and can be folded inwardly when the docking piece 24 is pushed in, so as to achieve the effect of one-way discharge. At the same time, in order to prevent the one-way folding piece 212 from bearing too much pressure, a limit block 213 is also set on the external docking tube 211, and the one-way folding piece 212 is supported by the limit block 213 to prevent it from bulging outward.

[0030] In order to facilitate the input of the external docking sleeve 211, in the present embodiment, the external docking sleeve 211 is tilted downwardly arranged, so that the molding sand can fall freely, and it is also convenient for the molding sand pushed in by the pushing piece 32 to fall quickly. Preferably, the angle between the external docking sleeve 211 and the horizontal plane is 135-150°, and correspondingly, the docking piece 24 cooperating with the external docking sleeve 211 also needs to be tilted to achieve seamless cooperation.

[0031] Since the sand storage layer has multiple layers, multiple external docking tubes 211 are also provided, and the docking member 24 needs to constantly change its position, so it needs to be displaced by the displacement member 22. Specifically, the displacement member 22 includes a linear motor 221 arranged in the guide frame 13, and a mounting table 222 is locked to the inner side of the linear motor 221. Ear plates are provided on both sides of the mounting table 222, and the two power members 23 are locked on the ear plates. The positions of the power member 23 and the docking member 24 are changed by the cooperation of the linear motor 221 and the guide frame 13, so that they can cooperate with different layers of sand storage layers.

[0032] During the process of the docking member 24 cooperating with the outer docking sleeve 211, the docking member 24 includes a rhombus frame 241 connected to two power members 23, and an inner docking sleeve 242 is provided on the side of the rhombus frame 241 facing the one-way feeding member 21. After the power member 23 is pushed out, the inner docking sleeve 242 is inserted into the outer docking sleeve 211 and pushes open the one-way folding piece 212, and the inner docking sleeve 242 is connected to the discharge conduit 25. Through the inner docking sleeve 242 that is adapted to the inner diameter of the outer docking sleeve 211, the power member 23 drives the inner docking sleeve 242 to push open the one-way folding piece 212 and then dock with the outer docking sleeve 211, thereby achieving a seamless connection effect, and the one-way folding piece 212 will automatically reset after the inner docking sleeve 242 is pushed out, thereby avoiding the problem of leakage before and after docking.

[0033] Since a limit block 213 is provided in the outer docking sleeve 211, in order to allow the inner docking sleeve 242 to adapt to the inner wall of the outer docking sleeve 211 and also to give way to the limit block 213, the outer ring of the inner docking sleeve 242 is a flexible ring. When the inner docking sleeve 242 pushes open the one-way folding piece 212, the flexible ring is stretched open and fits against the inner wall of the outer docking sleeve 211. By setting the outside of the inner docking sleeve 242 as a flexible ring, it can smoothly pass through the position of the limit block 213 and fit tightly against the inner side of the outer docking sleeve 211 when cooperating with the outer docking sleeve 211, thereby reducing the possibility of leakage of molding sand.

[0034] In order to allow the inner docking tube 242 to transport the molding sand normally when its position changes, the discharge conduit 25 includes a corrugated section 251 connected to the inner docking tube 242. The corrugated section 251 is connected to a steel pipe section 252 on the side away from the sand storage 10. The steel pipe section 252 is connected to the sand mixer through an elastic tube 253. The corrugated section 251 has a certain elasticity and can be deformed during the extension and retraction of the power part 23. The steel pipe section 252 provides a hard foundation for the entire conveying pipeline. Since the entire pipeline needs to constantly change its height, an elastic tube 253 needs to be made at the position where it cooperates with the sand mixer.

[0035] However, if the above-mentioned material discharge method is adopted, during the process of the molding sand being discharged through the one-way feeding piece 21, the molding sand on the top will continuously leak out, thereby causing the molding sand in different temperature ranges to mix together, resulting in temperature confusion of the molding sand. When the sand mixer reacts, the fed molding sand will not meet the requirements due to inappropriate temperature, which directly affects the quality of the mold. Therefore, the utility model provides a single-zone sand discharge structure on the basis of the multi-temperature zone material discharge mechanism. When the one-way feeding piece 21 starts to leak sand after docking with the docking piece 24, the pushing piece 32 is pushed out synchronously, not only pushing the molding sand to one side of the one-way feeding piece 21 through the pushing plate 33, but also closing the upper material discharge hole 311 through the load-bearing top plate 34, so as to avoid interference caused by the falling of the upper layer of molding sand during the sand discharge process, so that the temperature of the molding sand input into the sand mixer meets the expectations, and no unnecessary processing is required, and it can be directly used for mixing and stirring.

[0036] In order to allow the pusher 32 to quickly close the discharge hole 311 after being pushed out, the load-bearing top plate 34 is located on the left side of the bottom of the discharge hole 311. Once the pusher 32 moves, the load-bearing top plate 34 immediately closes the discharge hole 311.

[0037] It should be noted that the thickness of the load-bearing top plate 34 will become thicker as the height of the sand storage area decreases, that is, the closer the sand storage area is to the lower end, the thicker the thickness of the load-bearing top plate 34 will be.

[0038] 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 recovered sand storage cylinder, characterized in that: include: A sand storage (10), wherein the top of the sand storage (10) is connected to a sand inlet pipe (11), and the bottom of the sand storage (10) is connected to a sand outlet pipe (12), further comprising: A multi-temperature zone material discharge mechanism, wherein the sand storage (10) is divided into a plurality of sand storage areas, each of which is provided with a temperature sensor, and the temperature sensor collects the molding sand temperature of different sand storage areas and feeds back to the terminal, and the multi-temperature zone material discharge mechanism comprises a plurality of one-way material feeding parts (21) arranged on the sides of the plurality of sand storage areas; The single-zone sand discharge structure comprises a plurality of partition plates (31) fixedly connected in the sand storage (10), two sand storage areas are separated by the partition plate (31), a discharge hole (311) is provided on the partition plate (31), adjacent sand storage areas are connected through the discharge hole (311), a pushing piece (32) is provided in the sand storage area, a pushing plate (33) is locked on the output end of the pushing piece (32), and the top of the pushing plate (33) is connected to a load-bearing top plate (34).

2. A recovered sand storage cylinder according to claim 1, characterized in that: The one-way feeding member (21) comprises an outer butt-jointed sleeve (211) fixedly connected to the outside of the sand storage (10); the outer butt-jointed sleeve (211) is hollow; a one-way folding piece (212) is arranged inside the outer butt-jointed sleeve (211); the one-way folding piece (212) is hinged to the inner wall of the outer butt-jointed sleeve (211) via a plurality of torsion springs.

3. A recovered sand storage cylinder according to claim 2, characterized in that: A plurality of limit blocks (213) are arranged at one end of the external butt joint sleeve (211) away from the sand reservoir (10), and the limit blocks (213) block the one-way folding piece (212) when it is turned outward.

4. A recovered sand storage cylinder according to claim 3, characterized in that: The outer butt joint cylinder (211) is arranged to tilt downward, and the angle between the outer butt joint cylinder (211) and the horizontal plane is 135-150 degrees.

5. The recovered sand storage cylinder according to claim 1, characterized in that: The load-bearing top plate (34) is located on the left side of the bottom of the material discharge hole (311). When the pushing member (32) moves, the load-bearing top plate (34) immediately closes the material discharge hole (311).

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