Sand making machine and sand making production line

Abstract

The invention discloses a sand making machine and a sand making production line, the sand making machine comprises a sand making device, a discharging device and a detection device, the sand making device is used for crushing aggregate, the discharging device comprises a discharging bin and a valve assembly, the discharging bin is used for bearing the crushed aggregate from the sand making device, a main discharging channel and an auxiliary discharging channel are formed in the bottom of the discharging bin, and the main discharging channel is communicated with the auxiliary discharging channel. The valve assembly is arranged on the discharging bin and used for opening and closing the discharging auxiliary channel, the detection device is arranged in the discharging bin and used for detecting the aggregate stacking height in the discharging bin so that opening and closing control can be conducted on the valve assembly according to the detection result, and the sand making machine can effectively avoid the machine closing fault caused by the material blocking phenomenon; therefore, the purposes of maintaining the normal production efficiency of a sand making production line and prolonging the service life of equipment are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete production, and specifically relates to a sand making machine and a sand making production line. Background Art

[0002] Sand and gravel aggregates are widely used building materials in the construction field. Due to the ban and restriction on mining of traditional natural sand, the use of natural sand has gradually decreased. It has been replaced by machine-made sand, which has become the mainstream used in the sand and gravel aggregate industry. Sand making machine is used to prepare ≤40mm crushed stone into ≤5mm machine-made sand. It is a key equipment in the machine-made sand production line. Its discharging device has a large material flow rate, complex particle size and composition, and contains a lot of powder after crushing, which can easily cause poor material discharge. When the moisture content of the raw materials is high, it will aggravate the poor material discharge. If it is not discovered and cleaned in time, it will lead to a reduction in the discharge device flow rate, resulting in a continuous backlog of crushed aggregates. When it affects the operation of the rotor, it will cause the drive motor to overload, resulting in emergency shutdown and a machine failure, affecting the production efficiency of the machine-made sand production line and the service life of the sand making machine. Summary of the invention

[0003] In view of the above-mentioned defects or shortcomings, the present invention provides a sand making machine and a sand making production line, aiming to solve the technical problem that the existing sand making machine cannot clean up the blocked crushed aggregate in time, resulting in the driving motor being blocked.

[0004] To achieve the above-mentioned purpose, the present invention provides a sand making machine, wherein the sand making machine includes a sand making device, a discharging device and a detection device; the sand making device is used to crush aggregates; the discharging device includes a discharging bin and a valve assembly, the discharging bin is used to carry the crushed aggregates from the sand making device, a main discharging channel and an auxiliary discharging channel are formed at the bottom of the discharging bin, the valve assembly is arranged on the discharging bin and is used to open and close the auxiliary discharging channel; the detection device is arranged in the discharging bin and is used to detect the aggregate accumulation height in the discharging bin, so that the valve assembly can be opened and closed according to the detection result.

[0005] In an embodiment of the present invention, the sand making machine further includes a controller in communication with the detection device, and the controller is configured as follows:

[0006] Obtain the test results of the detection device in real time and record the time points of different aggregate accumulation heights;

[0007] Determine the opening of the valve assembly to be adjusted according to the time point;

[0008] The control valve assembly is opened to the opening to be adjusted.

[0009] In an embodiment of the present invention, the detection device includes two material level sensors respectively connected to the controller for communication, and the two material level sensors are sequentially arranged at a first preset height and a second preset height of the discharge bin from bottom to top. The detection results of the detection device are obtained in real time, and the time points of recording different aggregate accumulation heights include:

[0010] When the aggregate accumulation height reaches a first preset height, recording the current time as a first time point;

[0011] When the aggregate stacking height reaches the second preset height, the current time is recorded as the second time point.

[0012] In an embodiment of the present invention, determining the opening of the valve assembly to be adjusted according to the time point includes:

[0013] Calculate the time interval from the first time point to the second time point;

[0014] When the time interval is less than the first preset time length, the opening to be adjusted is determined to be 50%; and

[0015] When the time interval is greater than or equal to the first preset time length, the opening degree to be adjusted is determined to be 100%.

[0016] In an embodiment of the present invention, after the control valve assembly is opened with the opening to be adjusted, the method further comprises:

[0017] After a second preset time, the valve assembly is controlled to close the discharge auxiliary channel;

[0018] The detection result of the detection device is obtained, and the sand making device is controlled to stop when the aggregate accumulation height reaches a first preset height.

[0019] In an embodiment of the present invention, the sand making machine further includes a reminder device, and the controller is further configured to:

[0020] When the aggregate stacking height reaches a first preset height, the control reminder device sends a reminder signal.

[0021] In an embodiment of the present invention, the valve assembly includes a valve plate and a telescopic driving component. The valve plate can be laterally pulled and arranged on the discharge auxiliary channel corresponding to the opening of the discharge auxiliary channel. The telescopic driving component is arranged on the outside of the discharge bin and drives the connected valve plate to drive the valve plate to open and close the opening of the discharge auxiliary channel.

[0022] In an embodiment of the present invention, two supporting guide rails are correspondingly arranged on two side walls of the discharge auxiliary channel, and a pull-out opening corresponding to the same end of the two supporting guide rails is also opened on the discharge auxiliary channel. The first end of the valve plate can extend into the discharge auxiliary channel from the pull-out opening, and the opposite sides of the valve plate slide into the two supporting guide rails correspondingly, and the telescopic driving member is drivingly connected to the second end of the valve plate located on the outside.

[0023] In an embodiment of the present invention, the discharge bin includes a discharge hopper and a material guiding portion arranged at the lower end of the discharge hopper, the upper end of the discharge hopper is connected to the crushing device, the discharge main channel is inclined outward from the corner position of the lower end of the material guiding portion in a direction from top to bottom, and the projection of the outlet of the discharge hopper in the inclined direction of the discharge main channel falls into the inner cavity of the discharge main channel, and the discharge auxiliary channel is located on one side of the discharge main channel and is arranged opposite to the outlet of the discharge hopper.

[0024] In order to achieve the above objectives, the present invention also provides a sand making production line, wherein the sand making production line includes the above-mentioned sand making machine.

[0025] Through the above technical solution, the sand making machine provided by the embodiment of the present invention has the following beneficial effects:

[0026] When the above-mentioned sand making machine is used, the aggregate enters the discharge bin after being crushed by the sand making device. When the equipment is in normal operation, the valve assembly is in a normally closed state, and the crushed aggregate can only be discharged along the main discharge channel. When the material is blocked in the discharge bin, the crushed aggregate cannot be discharged from the main discharge channel in time, and will gradually accumulate in the discharge bin. The detection device is used to detect the aggregate accumulation height in the discharge bin. According to the detection result of the detection device, the valve assembly can be controlled to open or close the discharge auxiliary channel. After the valve assembly opens the discharge auxiliary channel, part of the crushed aggregate can be discharged from the discharge auxiliary channel, thereby increasing the discharge speed of the equipment to achieve the purpose of solving the material blocking problem. By setting the discharge device and the detection device, the machine failure caused by the material blocking phenomenon can be effectively avoided, the normal production efficiency of the sand making production line can be maintained, and the service life of the sand making device can be increased.

[0027] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 is a schematic diagram of a sand making machine according to an embodiment of the present invention;

[0030] Figure 2 is a detailed structural diagram of a sand making machine according to one embodiment of the present invention;

[0031] Figure 3 is a side view of a valve assembly according to an embodiment of the present invention;

[0032] Figure 4 is a top view of a valve assembly according to an embodiment of the present invention;

[0033] Figure 5 is a diagram of execution steps of a controller according to an embodiment of the present invention;

[0034] Figure 6 yes Figure 5 Detailed execution step diagram of step S200;

[0035] Figure 7 is a control flow chart of a controller according to an embodiment of the present invention.

[0036] Description of Reference Numerals

[0037] 1 Sand making device 11 First feed pipe

[0038] 12 Feed bin 13 Second feed pipe

[0039] 14 Crushing chamber 15 Surrounding guard plate

[0040] 16 Rotor 17 Frame

[0041] 18 driving motor 19 V-belt

[0042] 2 Discharging device 21 Discharging bin

[0043] 211 Main discharge channel 212 Auxiliary discharge channel

[0044] 213 discharge hopper 214 material guide part

[0045] 215 Valve body 22 Valve assembly

[0046] 221 valve plate 222 telescopic drive element

[0047] 223 Support rail 3 Detection device

[0048] 31 Material level sensor 4 Controller DETAILED DESCRIPTION

[0049] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0050] The sand making machine of the present invention will be described below with reference to the accompanying drawings.

[0051] like Figure 1 As shown, the present invention provides a sand making machine, wherein the sand making machine comprises:

[0052] A sand making device 1, used for crushing aggregate;

[0053] The discharging device 2 includes a discharging bin 21 and a valve assembly 22. The discharging bin 21 is used to carry the crushed aggregate from the sand making device 1. The bottom of the discharging bin 21 is formed with a discharging main channel 211 and a discharging auxiliary channel 212. The valve assembly 22 is arranged on the discharging bin 21 and is used to open and close the discharging auxiliary channel 212.

[0054] The detection device 3 is arranged in the discharge bin 21 and is used to detect the aggregate accumulation height in the discharge bin 21, so that the opening and closing of the valve assembly 22 can be controlled according to the detection result.

[0055] When the above-mentioned sand making machine is used, the aggregate enters the discharge bin 21 after being crushed by the sand making device 1. When the equipment is in normal operation, the valve assembly 22 is in a normally closed state, and the crushed aggregate can only be discharged along the discharge main channel 211. When the discharge bin 21 and the discharge main channel 211 are blocked, the crushed aggregate cannot be discharged from the discharge main channel 211 in time, and will gradually accumulate in the discharge bin 21. The detection device 3 is used to detect the aggregate accumulation height in the discharge bin 21. According to the detection result of the detection device 3, the valve assembly 22 can be controlled to open or close the discharge auxiliary channel 212. After the valve assembly 22 opens the discharge auxiliary channel 212, part of the crushed aggregate can be discharged from the discharge auxiliary channel 212, thereby increasing the discharge speed of the equipment to achieve the purpose of solving the blockage problem. By setting the discharge device 2 and the detection device 3, the machine failure caused by the blockage phenomenon can be effectively avoided, the normal production efficiency of the sand making production line can be maintained, and the service life of the sand making device 1 can be increased.

[0056] Specifically, the structure of the sand making device 1 is as follows: Figure 2 As shown, the sand making device 1 includes a first feed pipe 11, a feed bin 12 and a crushing bin 14 arranged in sequence from top to bottom. The first feed pipe 11 is connected to an external feeding device. The feed bin 12 and the crushing bin 14 are connected by a second feed pipe 13. The feed bin 12 has a certain accommodating space, which can play a role in temporarily piling up aggregates to avoid the problem of aggregate overflow caused by the aggregate introduction speed exceeding the processing capacity of the sand making device 1. The crushing bin 14 includes two bin bodies separated from each other. The upper bin body is provided with a rotor 16 and a plurality of peripheral guard plates 15 arranged around the rotor 16. The connecting shaft of the rotor 16 extends into the lower bin body. The outer side of the crushing bin 14 is provided with a frame 17 and a drive motor 18. The sand making device 1 is installed and fixed on a concrete or other steel structure platform through the frame 17. The drive motor 18 is connected to the connecting shaft through a V-belt 19. The controller 4 is connected to the detection device 3 and the valve assembly 22 through cables to read data and transmit control instructions. The working process of the sand making device 1 is as follows:

[0057] Aggregates enter the crushing bin 14 through the second feed pipe 13, and the rotor 16 rotates at high speed under the action of the drive motor 18. Aggregates entering the rotor 16 are thrown out from the discharge port of the rotor 16 in a launching motion under the action of centrifugal force, and collide with the surrounding guard plates 15 evenly installed in the crushing bin 14, so that the aggregates are crushed and work is performed to achieve the effect of sand making. The crushed aggregates are discharged from the discharge bin 21 and enter the next process of the sand making production line.

[0058] like Figure 5 As shown, in the embodiment of the present invention, the sand making machine further includes a controller 4 which is communicatively connected to the detection device 3, and the controller 4 is configured as follows:

[0059] Step S100, obtaining the detection result of the detection device 3 in real time, and recording the time points of different aggregate accumulation heights;

[0060] Specifically, crushed stone aggregates will produce powder during the collision and crushing process. When the water content is high, it is easy to compact in the discharge bin 21 and the main discharge channel 211, causing the discharge port to become smaller, resulting in poor material discharge. Depending on the degree of compaction, the blocking situation also varies. If the degree of compaction is light, as the crushed aggregates continue to fall, the weight of the crushed aggregates accumulated at the compacted place will also increase. When the weight of the crushed aggregates exceeds a certain value, the compaction will be broken or fall off the inner wall of the discharge bin 21, the blocking problem will be alleviated, and the aggregate accumulation height will also decrease. If the degree of compaction is severe, the crushed aggregates will accumulate at the compacted place for a long time, which will further aggravate the degree of compaction, the blocking problem will be more serious, and the aggregate accumulation height will gradually increase. By recording the time points of different aggregate accumulation heights, the actual blockage situation inside the crushing bin can be further determined. Only when the blockage problem becomes increasingly serious will the subsequent steps be controlled and executed. Compared with the judgment method that only relies on a single detection result, repeated opening and closing of the valve assembly 22 can be avoided, so that the crushed aggregate can be discharged from the main material channel 211 as much as possible.

[0061] Step S200, determining the opening of the valve assembly 22 to be adjusted according to the time point;

[0062] Step S300, controlling the valve assembly 22 to open at the opening to be adjusted.

[0063] like Figure 2 and Figure 6 As shown, in the embodiment of the present invention, the detection device 3 includes two material level sensors 31 respectively connected to the controller 4 for communication, and the two material level sensors 31 are sequentially arranged at a first preset height and a second preset height of the discharge bin 21 from bottom to top. The detection result of the detection device 3 is obtained in real time, and the time points of recording different aggregate accumulation heights include:

[0064] Step S110, when the aggregate accumulation height reaches a first preset height, recording the current time as a first time point;

[0065] Step S120, when the aggregate accumulation height reaches a second preset height, recording the current time as a second time point;

[0066] Specifically, when a material blockage occurs in the discharge bin 21, the crushed aggregate will gradually accumulate in the discharge hopper 213. The faster the accumulation speed, the slower the discharge speed of the crushed aggregate, which means that the degree of material blockage is more serious. The controller 4 can determine the degree of material blockage according to the time interval from the first time point to the second time point. Step S200, determining the opening of the valve assembly 22 to be adjusted according to the time point further includes: calculating the time interval from the first time point to the second time point, and determining the opening of the valve assembly 22 to be adjusted according to the time interval.

[0067] In the embodiment of the present invention, determining the opening of the valve assembly 22 to be adjusted according to the time interval includes: when the time interval is less than the first preset time length, determining the opening to be adjusted to 50%; and when the time interval is greater than or equal to the first preset time length, determining the opening to be adjusted to 100%. Specifically, the value of the first preset time length is determined according to the working parameters of the sand making device 1.

[0068] The two material level sensors 31 detect the height of the aggregate in the discharge hopper 213. When the material level sensor 31 set at the first preset height sends a detection signal, it indicates that there is a blockage in the discharge bin 21. The controller 4 records the current time point as the first time point. Thereafter, three situations may occur; the first situation is that the aggregate height drops below the first preset height, indicating that the blockage is relatively light and can be naturally alleviated with the sand making process. The controller 4 does not need to control the valve assembly 22 to operate; the second situation is that the aggregate accumulation height continues to increase and reaches the second preset height. At this time, the material level sensor 31 set at the second preset height sends a detection signal, and the controller 4 records The current time point is the second time point, and the time interval between the first time point and the second time point is less than the first preset time length, indicating that the degree of material blockage is general and cannot be naturally relieved. At this time, the controller 4 controls the valve assembly 22 to open at 50% of the opening; the third case is that the aggregate accumulation height continues to increase and reaches the second preset height. At this time, the material level sensor 31 set at the second preset height sends a detection signal, and the controller 4 records the current time point as the second time point, and the time interval between the first time point and the second time point is greater than or equal to the first preset time length, indicating that the degree of material blockage is serious. At this time, the controller 4 controls the valve assembly 22 to open at 100% of the opening. The controller 4 executes different control strategies according to the different degrees of material blockage. On the premise of solving the material blockage problem, the crushed aggregate is discharged from the main discharge channel 211 as much as possible to ensure normal production.

[0069] In other embodiments of the present invention, a corresponding function between the opening to be adjusted and the time interval may be established, and the controller 4 calculates the precise value of the opening to be adjusted according to the actual negative time interval and the function.

[0070] In the embodiment of the present invention, after step S300, controlling the valve assembly 22 to open with the opening to be adjusted, the method further includes:

[0071] After a second preset time, the valve assembly 22 is controlled to close the discharge auxiliary channel 212;

[0072] The detection result of the detection device 3 is obtained, and the sand making device 1 is controlled to stop when the aggregate accumulation height reaches a first preset height.

[0073] Specifically, since the discharge auxiliary channel 212 is only used to alleviate the blockage problem and should not be opened for a long time, the controller 4 is configured to control the valve assembly 22 to close the discharge auxiliary channel 212 at a second preset time interval, and after the discharge auxiliary channel 212 is closed, a material level sensor 31 set at a first preset height detects the aggregate accumulation height again. If the aggregate accumulation height is lower than the preset height, it means that the blockage problem has been solved; if the aggregate accumulation height is higher than or equal to the first preset height, it means that the blockage degree is extremely serious, and it is difficult to solve the blockage problem by simply opening the discharge auxiliary channel 212. In this case, the controller 4 controls the sand making device 1 to shut down and solves the blockage problem through manual intervention.

[0074] In the embodiment of the present invention, the sand making machine further includes a reminder device, and the controller 4 is further configured to: when the aggregate accumulation height reaches the first preset height, control the reminder device to send a reminder signal to remind the operator to perform timely maintenance on the sand making machine after the production is completed. Specifically, the reminder device can be a signal light, a display screen, etc.

[0075] Specifically, see Figure 7 , the control flow of controller 4 is as follows:

[0076] Obtaining the aggregate height measured by the detection device;

[0077] Determine whether the aggregate stacking height is greater than or equal to the first preset height; if it is judged to be no, control the sand making device 1 to execute the normal production mode; if it is judged to be yes, execute the subsequent steps;

[0078] Record the time point when the aggregate accumulation height reaches the first preset height;

[0079] Determine whether the aggregate stacking height is greater than or equal to the second preset height; if it is judged to be no, control the sand making device 1 to execute the normal production mode; if it is judged to be yes, execute the subsequent steps;

[0080] Record the time point when the aggregate accumulation height reaches the second preset height;

[0081] Determine whether the time interval is less than the first preset time length; if it is, control the valve assembly 22 to open at 100% of the opening to be adjusted; if not, control the valve assembly 22 to open at 50% of the opening to be adjusted.

[0082] like Figure 1 , Figure 3 and Figure 4 As shown, in the embodiment of the present invention, the valve assembly 22 includes a valve plate 221 and a telescopic driving member 222, the valve plate 221 can be horizontally pulled out on the discharge auxiliary channel 212 corresponding to the opening of the discharge auxiliary channel 212, and the telescopic driving member 222 is arranged on the outside of the discharge bin 21 and is driven to connect the valve plate 221 to drive the valve plate 221 to open and close the opening of the discharge auxiliary channel 212. The opening of the valve plate 221 can be controlled by controlling the stroke of the telescopic driving member 222.

[0083] Specifically, two supporting guide rails 223 are arranged one by one on two side walls of the discharge auxiliary channel 212 that are arranged opposite to each other, and a drawing opening corresponding to the same end of the two supporting guide rails 223 is also provided on the discharge auxiliary channel 212, and the first end of the valve plate 221 can be extended into the discharge auxiliary channel 212 from the drawing opening, and the opposite sides of the valve plate 221 slide into the two supporting guide rails 223 one by one, and the telescopic driving member 222 is drivingly connected to the second end of the valve plate 221 located on the outside. On the one hand, the supporting guide rails 223 provide guidance for the movement of the valve plate 221, and improve the stability of the pulling and moving of the valve plate 221. On the other hand, when the valve plate 221 is closed or the discharge auxiliary channel 212 is closed, the crushed aggregate will be partially accumulated on the valve plate 221, and the supporting guide rails 223 can provide support for the valve plate 221 to prevent the valve plate 221 from being compressed and deformed.

[0084] Of course, the present invention is not limited to this. The valve assembly 22 can also adopt a rotating structure, including a flap and a rotating drive component. The flap can be rotatably arranged in the discharge auxiliary channel 212, and the rotating drive component is arranged on the outside of the discharge bin 21 and drives the connected valve plate 221. By controlling the rotation angle of the rotating drive component, the opening of the flap can be correspondingly controlled.

[0085] In the embodiment of the present invention, the discharge bin includes a discharge hopper 213 and a guide portion 214 provided at the lower end of the discharge hopper 213, and the upper end of the discharge hopper 213 is connected to the sand making device 1. The sand making machine is applied to the sand making production line, and the various equipment of the machine-made sand production line are arranged in sequence from top to bottom. The sand making machine and the production equipment below are arranged horizontally staggered, and the discharge main channel 211 is inclined outward from the corner position of the lower end of the guide portion 214 in the direction from top to bottom to connect the production equipment below. The projection of the outlet of the discharge hopper 213 in the inclined direction of the discharge main channel 211 falls into the inner cavity of the discharge main channel 211, ensuring that the crushed aggregate can be discharged smoothly along the discharge main channel during normal production. The discharge auxiliary channel 212 is located on one side of the discharge main channel 211 and is arranged directly opposite to the outlet of the discharge hopper 213. When a material blockage problem occurs and the valve assembly 22 is opened, the crushed aggregate can be discharged vertically along the discharge auxiliary channel 212, and the discharge speed is fast.

[0086] Specifically, the main discharge channel 211 and the auxiliary discharge channel 212 correspond to different transmission lines respectively. The transmission line corresponding to the main discharge channel 211 is used to transport the crushed aggregate to the next process, and the transmission line corresponding to the auxiliary discharge channel 212 is used to re-introduce the crushed aggregate into the sand making device 1.

[0087] Furthermore, the main discharge channel 211 is integrally arranged with the material guide portion 214, and the valve body 215 constituting the auxiliary discharge channel 212 is detachably connected to the lower end of the material guide portion 214. During maintenance, maintenance personnel can clean and maintain the interior of the sand making machine by removing the valve body 215, as well as clean and maintain the support guide rail 223 and the valve plate 221.

[0088] Furthermore, the discharge auxiliary channel 212 and the conveying line below are spaced apart, and the crushed aggregate falls vertically without the need to set up a pipeline for guidance. The gap between the discharge auxiliary channel 212 and the conveying line also allows the operator to clean the inside of the sand making machine through the discharge auxiliary channel 212.

[0089] In order to achieve the above objectives, the present invention further provides a sand making production line, wherein the sand making production line includes the above sand making machine. Since the sand making production line adopts all the technical solutions of the above embodiments, it has the following beneficial effects:

[0090] The blocking condition of the discharging device 2 is automatically detected, analyzed and identified by the controller 4, which can timely discover and solve the problem that the existing solution cannot be observed manually or is difficult to observe in a confined space;

[0091] The system can self-judge the degree of blockage and output different strategies according to the degree of blockage to automatically run self-cleaning operations, thus avoiding emergency shutdown of the equipment and causing machine failure, and improving the efficiency of the entire production line;

[0092] High degree of automation, automatic judgment and processing by the controller 4, unified judgment standard, less manual intervention, avoiding the occurrence of machine failure caused by inconsistent manual judgment standards;

[0093] Avoid irreversible damage to the equipment caused by high-load emergency shutdown during the operation of the sand making device 1, and increase the service life of the sand making device 1.

[0094] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0095] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0096] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0097] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A sand making machine, characterized in that: The sand making machine comprises: A sand making device (1) for crushing aggregate; A discharge device (2), comprising a discharge bin (21) and a valve assembly (22), wherein the discharge bin (21) is used to carry the crushed aggregate from the sand making device (1), a discharge main channel (211) and a discharge auxiliary channel (212) are formed at the bottom of the discharge bin (21), and the valve assembly (22) is arranged on the discharge bin (21) and is used to open and close the discharge auxiliary channel (212); The detection device (3) is arranged in the discharge bin (21) and is used to detect the aggregate accumulation height in the discharge bin (21), so that the opening and closing of the valve assembly (22) can be controlled according to the detection result.

2. The sand making machine according to claim 1, characterized in that: The sand making machine further comprises a controller (4) communicatively connected to the detection device (3), wherein the controller (4) is configured as follows: Acquire the detection result of the detection device (3) in real time, and record the time points of different aggregate accumulation heights; determining the opening of the valve assembly (22) to be adjusted according to the time point; The valve assembly (22) is controlled to open at the opening to be adjusted.

3. The sand making machine according to claim 2, characterized in that: The detection device (3) comprises two material level sensors (31) respectively connected to the controller (4) for communication, and the two material level sensors (31) are arranged at a first preset height and a second preset height of the discharge bin (21) in order from bottom to top. The real-time acquisition of the detection result of the detection device (3) and the recording of the time points of different aggregate accumulation heights include: When the aggregate stacking height reaches the first preset height, recording the current time as the first time point; When the aggregate stacking height reaches the second preset height, the current time is recorded as the second time point.

4. The sand making machine according to claim 3, characterized in that: Determining the opening of the valve assembly (22) to be adjusted according to the time point comprises: Calculating the time interval from the first time point to the second time point; When the time interval is less than a first preset time length, the opening to be adjusted is determined to be 50%; and When the time interval is greater than or equal to the first preset time length, the opening to be adjusted is determined to be 100%.

5. The sand making machine according to claim 3, characterized in that: After controlling the valve assembly (22) to open at the opening to be adjusted, the method further comprises: After a second preset time period, controlling the valve assembly (22) to close the auxiliary discharge channel (212); The detection result of the detection device (3) is obtained, and when the aggregate accumulation height reaches the first preset height again, the sand making device (1) is controlled to stop.

6. The sand making machine according to claim 3, characterized in that: The sand making machine further comprises a reminder device, and the controller (4) is further configured to: When the aggregate stacking height reaches the first preset height, the reminding device is controlled to send out a reminding signal.

7. The sand making machine according to any one of claims 1 to 6, characterized in that: The valve assembly (22) comprises a valve plate (221) and a telescopic driving member (222); the valve plate (221) is arranged on the discharge auxiliary channel (212) in a manner that can be pulled out transversely corresponding to the opening of the discharge auxiliary channel (212); the telescopic driving member (222) is arranged on the outer side of the discharge bin (21) and is driven to be connected to the valve plate (221) so as to drive the valve plate (221) to open and close the opening of the discharge auxiliary channel (212).

8. The sand making machine according to claim 7, characterized in that: Two supporting guide rails (223) are correspondingly arranged on two side walls of the discharge auxiliary channel (212) that are arranged opposite to each other, and a pull-out opening corresponding to the same end of the two supporting guide rails (223) is also opened on the discharge auxiliary channel (212), and the first end of the valve plate (221) can be extended into the discharge auxiliary channel (212) from the pull-out opening, and the opposite sides of the valve plate (221) slide into the two supporting guide rails (223) one by one, and the telescopic driving member (222) is drivingly connected to the second end of the valve plate (221) located on the outside.

9. The sand making machine according to any one of claims 1 to 6, characterized in that: The discharge bin comprises a discharge hopper (213) and a guide portion (214) arranged at the lower end of the discharge hopper (213); the upper end of the discharge hopper (213) is connected to the sand making device (1); the discharge main channel (211) is inclined outward from the corner position of the lower end of the guide portion (214) in a direction from top to bottom, and the projection of the outlet of the discharge hopper (213) in the inclined direction of the discharge main channel (211) falls into the inner cavity of the discharge main channel (211); the discharge auxiliary channel (212) is located on one side of the discharge main channel (211) and is arranged opposite to the outlet of the discharge hopper (213).

10. A sand production line, characterized in that: The sand making production line comprises a sand making machine according to any one of claims 1 to 9.

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