Sand transportation spraying cooling system

Abstract

The utility model discloses a sand transport spray cooling system, which comprises a transport belt, a spray system and a control system, the spray system comprises a spray device and an electromagnetic valve, the spray device is arranged above the transport belt, one end of the electromagnetic valve is connected with a water injection pipeline, and the other end of the electromagnetic valve is connected with the spray device through a pipeline. The control system comprises an electric control switch, a first detection device, a first switch, a second switch and a second detection device which are connected with one another, the first detection device and the second detection device are arranged at intervals in the running direction of the conveying belt, and the electric control switch is electrically connected with the electromagnetic valve. By arranging the first detection device and the second detection device, when the first detection device and the second detection device both receive induction, the electromagnetic valve is triggered, the multiple spray heads spray water at the same time, and sand on the conveying belt is cooled. Through the arrangement of the double induction conditions, water can be effectively prevented from being sprayed by mistake, and the spraying device continuously cools the sand on the continuously running conveying belt, so that the cooling efficiency of the sand is guaranteed, and the water content of the sand is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of sand and gravel transportation, and in particular to a sand transportation spraying and cooling system. Background Art

[0002] For wet sand casting, after the sand mold is poured, the high-temperature sand needs to be recycled. During the recycling process, the high-temperature sand needs to be sprayed with water to cool it down, increase the water content of the recycled sand, and lock in the additives in the sand, such as bentonite and coal powder, so as to better ensure the quality of the finished sand. In addition, with the introduction of multiple parts, such as eight parts in one brake disc, the sand-iron ratio is 4:1, and a large amount of molten iron burns the sand mold, causing the temperature of the old sand to rise significantly to 180℃-230℃.

[0003] In order to cool the high-temperature sand, a sand transport spray cooling system is usually used, such as Figure 1 The figure shows a schematic diagram of the structure of an existing sand transport spray cooling system. The existing sand transport spray cooling system generally includes a hopper 10, a conveyor belt 1, and a plurality of nozzles 211. The hopper 10 is arranged at one end of the sand transport belt. The low material level and the middle material level of the hopper 10 are respectively equipped with material sensors. Sand 100 is loaded into the hopper until the material sensor at the middle material level senses the sand 100. At this time, the material sensor at the middle material level sends a start signal to the conveyor belt 1, and the conveyor belt 1 runs. With the operation of the conveyor belt 1, the sand 100 in the hopper 10 is reduced until the material sensor at the low material level senses the sand 100 and sends a pause signal to the conveyor belt 1 to stop the conveyor belt 1. Thus, the conveyor belt 1 is started intermittently by the material sensor. A plurality of nozzles 211 are arranged above the conveyor belt 1. When the conveyor belt 1 is paused, the nozzles 211 spray water on the sand 100 on the conveyor belt 1 to achieve the effect of spraying water and cooling.

[0004] However, the sand transport spray cooling system such as the above-mentioned one needs to install a sand bucket and is limited to intermittent start-up to spray water on the belt. It is costly, inefficient, slow to cool down, and cannot meet changing production needs. Utility Model Content

[0005] In view of the shortcomings of the prior art, a sand transport spraying and cooling system is provided.

[0006] To achieve the above-mentioned purpose, the utility model provides a sand transport spray cooling system, including a conveyor belt, a spray system and a control system. The spray system includes a spray device and a solenoid valve. The spray device is arranged above the conveyor belt. One end of the solenoid valve is connected to a water injection pipe, and the other end is connected to the spray device through a pipe. The control system includes an electric control switch, a first detection device, a first switch, a second switch and a second detection device. The first detection device and the second detection device are arranged at intervals along the running direction of the conveyor belt. The first detection device is electrically connected to one end of the first switch, and the other end of the first switch is electrically connected to the electric control switch and the second switch respectively. The other end of the second switch is electrically connected to the second detection device, and the electric control switch is electrically connected to the solenoid valve.

[0007] According to one embodiment of the utility model, the spray device includes a plurality of spray heads, the plurality of spray heads are arranged at intervals, and the plurality of spray heads are connected by pipelines.

[0008] According to an embodiment of the present invention, the plurality of nozzles are arranged at intervals and not in a co-linear manner.

[0009] According to an embodiment of the present invention, the spray device further comprises a plurality of check valves, each of which is arranged at the end of a spray head.

[0010] According to one embodiment of the utility model, the spray system further comprises a protective cover, which is arranged above the conveying belt, and a plurality of spray heads are arranged through the protective cover.

[0011] According to one embodiment of the utility model, the spray system further includes a pressure reducing valve, which is connected between the solenoid valve and the water injection pipeline.

[0012] According to an embodiment of the present invention, the first detection device is a temperature sensing device.

[0013] According to an embodiment of the present invention, the second detection device is a travel switch.

[0014] According to an embodiment of the present invention, both the first switch and the second switch are relays.

[0015] The beneficial effect of the utility model is that by respectively setting the first detection device and the second detection device along the transport direction of the transport belt, when both receive induction, the electromagnetic valve is triggered, so that multiple nozzles spray water at the same time to cool down the sand on the transport belt. Therefore, by setting the dual sensing conditions, when the transport belt is transporting sand, the spray device continuously cools down the sand on the transport belt to ensure the cooling efficiency of the sand and effectively increase the water content of the sand. At the same time, the dual sensing design can effectively avoid accidental water spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 This is a structural diagram of the existing sand transport spray cooling system;

[0018] Figure 2 Schematic diagram of the sand transport spray cooling system in the embodiment;

[0019] Figure 3 is a bottom view of the spray device in the embodiment;

[0020] Figure 4 Schematic diagram of the spray device and the protective cover in the embodiment.

[0021] Description of Reference Numerals

[0022] 1- transport belt; 2- spray system; 3- control system; 21- spray device; 22- solenoid valve; 23- protective cover; 24- pressure reducing valve; 31- electric control switch; 32- first detection device; 33- first switch; 34- second switch; 35- second detection device; 211- spray head; 212- check valve; 100- sand material. DETAILED DESCRIPTION

[0023] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0024] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0025] Please refer to Figure 2 , Figure 2 Schematic diagram of a sand transport spray cooling system. This embodiment provides a sand transport spray system 2, which includes a conveyor belt 1, a spray system 2 and a control system 3. The conveyor belt 1 is used to transport sand 100, and the spray system 2 is arranged above the conveyor belt 1. During the process of conveying sand 100 by the conveyor belt 1, the spray system 2 sprays the sand 100 on the conveyor belt 1, thereby achieving a cooling effect. The control system 3 is used to detect whether there is sand 100 on the conveyor belt 1, and control the operation of the spray system 2 to achieve an automatic spraying effect.

[0026] Specifically, the spray system 2 includes a spray device 21 and a solenoid valve 22. The spray device 21 is arranged above the conveyor belt 1. The solenoid valve 22 is connected to one end of the spray device 21 and is connected to a water injection pipe. The solenoid valve 22 is used to control the switching state of the spray device 21, so that the water spraying of the spray device 21 is controlled by the solenoid valve 22.

[0027] The control system 3 includes an electric control switch 31, a first detection device 32, a first switch 33, a second switch 34 and a second detection device 35. The first detection device 32 and the second detection device 35 are arranged at intervals along the running direction of the conveyor belt 1, and both are used to detect whether there is abrasive material 100 on the conveyor belt 1. The first detection device 32 is connected to one end of the first switch 33, and the other end of the first switch 33 is respectively connected to the second switch 34 and the electric control switch 31. The other end of the second switch 34 is electrically connected to the second detection device 35, and the electric control switch 31 is also electrically connected to the solenoid valve 22, and the electric control switch 31 is used to control the switch of the solenoid valve 22.

[0028] When the sand transport spray cooling system is used, the sand material 100 is put on the conveyor belt 1, and the sand material 100 moves along the conveying direction of the conveyor belt 1 as the conveyor belt 1 moves. When the sand material 100 moves to the bottom of the first detection device 32, the first detection device 32 detects that there is sand material 100 on the conveyor belt 1, and the first switch 33 is closed. The conveyor belt 1 continues to run until the sand material 100 is transported to the bottom of the second detection device 35, and the second detection device 35 senses that there is sand material 100 on the conveyor belt 1, and the second switch 34 is closed. When the first switch 33 and the second switch 34 are both closed, the electric control switch 31 controls the solenoid valve 22 to open. At this time, the spray device 21 sprays water toward the conveyor belt 1, so that the sand material 100 on the conveyor belt 1 is cooled down. During the process of transporting the sand material 100, the sand material 100 is continuously put on the transport belt 1, and the transport belt 1 is continuously transported. The first detection device 32 and the second detection device 35 are continuously sensed, so that the first switch 33 and the second switch 34 remain in a closed state, and the spray device 21 continuously sprays water toward the sand material 100 on the transport belt 1, effectively improving the cooling efficiency of the sand transport spray cooling system. In addition, the double sensing method can avoid the occurrence of the situation where the spray device 21 is triggered by mistake.

[0029] Furthermore, both the first switch 33 and the second switch 34 are relays.

[0030] The first detection device 32 is a temperature detection probe, and the second detection device 35 is a travel switch. The temperature detection probe is used for temperature detection on the conveyor belt 1. When the temperature detection probe detects that the temperature of the conveyor belt 1 reaches a preset temperature, the first switch 33 is closed. The travel switch is used for secondary detection of the abrasive material 100. After passing through the temperature detection probe, the abrasive material 100 runs along the running direction of the conveyor belt 1 and passes through the travel switch. When the travel switch detects that there is abrasive material 100 on the conveyor belt 1, the second switch 34 is closed. When the conditions of the first switch 33 being closed and the second switch 34 being closed are met at the same time, the electric control switch 31 is opened, so that the solenoid valve 22 is opened, and the solenoid valve 22 controls the spraying device 21 to spray water.

[0031] Please refer to Figure 3 , Figure 3 Furthermore, in order to improve the uniformity of the spray system 2, multiple nozzles 211 are arranged at intervals and not in a colinear manner. When the nozzles 211 spray water, the staggered arrangement can ensure that the sand material 100 on the conveyor belt 1 is sprayed with water at all angles, so that the sand material 100 is cooled quickly.

[0032] In this embodiment, the plurality of nozzles 211 are arranged at equal intervals, the interval between two adjacent nozzles 211 is 1.5 meters, and the plurality of nozzles 211 are arranged in a non-collinear staggered manner, so that the sand material 100 on the conveyor belt 1 is within the range of the water spray.

[0033] It should be noted that the number of nozzles 211 can be adjusted according to actual production requirements, so there is no limitation on the number here.

[0034] Please refer to Figure 4 , Figure 4 Schematic diagram of the spray device and the protective cover. In addition, the spray device 21 also includes a plurality of check valves 212, which are respectively connected to the plurality of nozzles 211, that is, a check valve 212 is connected to the end of each nozzle 211. The check valve 212 is used to prevent the backflow of water. When the nozzle 211 stops spraying water, the check valve 212 can effectively avoid the dripping problem of residual water droplets from the nozzle 211, and prevent the residual water droplets from directly dripping onto the sand-free conveyor belt 1, thereby avoiding the sand sticking to the conveyor belt 1 and affecting the normal operation of the equipment.

[0035] Furthermore, the spray system 2 further includes a protective cover 23, which is arranged around the plurality of spray heads 211, and the plurality of spray heads 211 are provided with the protective cover 23. When the spray heads 211 spray water, the protective cover 23 can effectively prevent the water from splashing to the area outside the conveyor belt 1.

[0036] The spray system 2 also includes a pressure reducing valve 24, which is connected between the solenoid valve 22 and the water injection pipe. The pressure reducing valve 24 is used to reduce the water pressure and allow the water flow to flow at a constant speed. The water flow in the water injection pipe enters the solenoid valve 22 after the pressure is reduced by the pressure reducing valve 24, which effectively increases the service life of the battery valve.

[0037] In summary, by respectively setting the first detection device 32 and the second detection device 35 along the transport direction of the transport belt 1, when both receive induction, the solenoid valve 22 is triggered, so that the multiple nozzles 211 spray water at the same time to cool down the sand material 100 on the transport belt 1. Therefore, by setting the dual sensing conditions, when the transport belt 1 is transporting sand, the spray device 21 continuously cools down the sand material 100 on the transport belt 1 to ensure the cooling efficiency of the sand material 100 and effectively improve the water content of the sand material 100. At the same time, the dual sensing design can effectively prevent the nozzle 211 from spraying water by mistake.

[0038] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A sand transport spray cooling system, characterized in that: include: A conveyor belt (1), a spray system (2) and a control system (3), wherein the spray system (2) comprises a spray device (21) and a solenoid valve (22), wherein the spray device (21) is arranged above the conveyor belt (1), one end of the solenoid valve (22) is connected to a water injection pipeline, and the other end of the solenoid valve (22) is connected to the spray device (21) through a pipeline, and the control system (3) comprises an electric control switch (31), a first detection device (32), a first switch (33), a second switch (34) and a second detection device (35) The first detection device (32) and the second detection device (35) are arranged at intervals along the running direction of the conveying belt (1); the first detection device (32) is electrically connected to one end of the first switch (33); the other end of the first switch (33) is electrically connected to the electric control switch (31) and the second switch (34) respectively; the other end of the second switch (34) is electrically connected to the second detection device (35); and the electric control switch (31) is electrically connected to the solenoid valve (22).

2. The sand transport spray cooling system according to claim 1 is characterized in that: The spray device (21) comprises a plurality of spray heads (211), the plurality of spray heads (211) are arranged at intervals, and the plurality of spray heads (211) are connected via pipelines.

3. The sand transport spray cooling system according to claim 2 is characterized in that: The plurality of nozzles (211) are arranged at intervals and not in a co-linear manner.

4. The sand transport spray cooling system according to claim 2, characterized in that: The spray device (21) further comprises a plurality of check valves (212), each of the check valves (212) being arranged at the end of one of the spray heads (211).

5. The sand transport spray cooling system according to claim 2, characterized in that: The spray system (2) further comprises a protective cover (23), wherein the protective cover (23) is arranged above the conveyor belt (1), and the plurality of spray heads (211) are disposed through the protective cover (23).

6. The sand transport spray cooling system according to claim 2, characterized in that: The spray system (2) further comprises a pressure reducing valve (24), wherein the pressure reducing valve (24) is connected between the solenoid valve (22) and the water injection pipeline.

7. The sand transport spray cooling system according to claim 1, characterized in that: The first detection device (32) is a temperature sensing device.

8. The sand transport spray cooling system according to claim 1, characterized in that: The second detection device (35) is a travel switch.

9. The sand transport spray cooling system according to claim 1, characterized in that: The first switch (33) and the second switch (34) are both relays.

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