Control method, processor and pumping stirring system for pumping stirring system

Abstract

The present invention relates to the technical field of engineering machinery, and discloses a control method, a processor, and a pumping and stirring system for a pumping and stirring system. The method includes: controlling a first stirring device to rotate in a first direction, and controlling a second stirring device to rotate cyclically in a first direction and a second direction, so that the first stirring device stirs and pushes the material to the first suction port, and the second stirring device stirs the material back and forth between the direction close to and away from the second suction port; controlling the second stirring device to rotate in the first direction or the second direction, and controlling the first stirring device to rotate cyclically in the first direction and the second direction, so that the second stirring device stirs and pushes the material to the second suction port, and the first stirring device stirs the material back and forth between the direction close to and away from the first suction port. The material is stirred evenly and fully, and stirred in a large range of forward and reverse directions; material transportation to the two suction ports is achieved, and the subsequent pumping efficiency of the material is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a control method, a processor and a pumping and stirring system for a pumping and stirring system. Background Art

[0002] Take concrete as an example of the material in the pumping mixing system. Concrete, referred to as "concrete", is a general term for engineering composite materials in which aggregates are bonded into a whole by cementitious materials. The term concrete usually refers to cement as a cementitious material, sand and stone as aggregates, and water (which may contain admixtures and additives) in a certain proportion, and the cement concrete obtained by mixing is also called ordinary concrete, which is widely used in civil engineering. Concrete generally contains high-efficiency water reducing agent, uses less water, and has a large viscosity. If it is not stirred, it will stick to the tank wall and is difficult to unload. In addition, stirring the concrete can maintain a good slump of the concrete and prevent it from sinking to the bottom.

[0003] The concrete pumping and mixing system has a great impact on the working efficiency of pumping equipment such as concrete pump trucks, vehicle-mounted pumps, trailer pumps, wet spraying machines, etc. In the current pumping and mixing system, the material absorption during the pumping process is not good enough, and the concrete pumping efficiency is low. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, an embodiment of the present invention provides a control method for a pumping and stirring system, the pumping and stirring system comprising:

[0005] Hopper, including:

[0006] The first stirring device and the second stirring device are respectively arranged at the first suction port and the second suction port of the hopper, and both include spiral blades;

[0007] Methods include:

[0008] Control the first stirring device to rotate in a first direction, and control the second stirring device to rotate in the first direction and the second direction cyclically, so that the first stirring device stirs the material in the hopper and pushes it to the first suction port, and the second stirring device stirs the material back and forth between the direction close to and away from the second suction port;

[0009] The second stirring device is controlled to rotate in the first direction or the second direction, and the first stirring device is controlled to rotate cyclically in the first direction and the second direction, so that the second stirring device stirs the material and pushes it to the second suction port, and the first stirring device stirs the material back and forth between the direction close to and away from the first suction port.

[0010] In an embodiment of the present invention, the pumping and stirring system further comprises:

[0011] A first concrete cylinder, comprising a first piston disposed in the first concrete cylinder, wherein a first head end of the first concrete cylinder is connected to a first material suction port;

[0012] A second concrete cylinder, comprising a second piston disposed in the second concrete cylinder, wherein a second head end of the second concrete cylinder is connected to a second material suction port;

[0013] The method also includes:

[0014] During the process of the first piston performing a material suction movement from the first head end to the first tail end of the first concrete cylinder, the second piston is controlled to synchronously perform a material pushing movement from the second tail end to the second head end of the second concrete cylinder, and the material suction movement is used to suck the material from the hopper into the first concrete cylinder;

[0015] When the first piston pushes the material from the first tail end to the first head end, the second piston is controlled to synchronously do the suction movement from the second head end to the second tail end. The pushing movement is used to push the material out of the first concrete cylinder.

[0016] In an embodiment of the present invention, the method further includes:

[0017] obtaining a first position of a first piston;

[0018] Controlling the first stirring device to rotate in a first direction includes:

[0019] When the first position reaches the first suction port, the first stirring device is controlled to rotate in the first direction.

[0020] In an embodiment of the present invention, the method further includes:

[0021] obtaining a second position of a second piston;

[0022] Controlling the second stirring device to rotate in the first direction or the second direction includes:

[0023] When the second position reaches the second material suction port, the second stirring device is controlled to rotate in the first direction or the second direction.

[0024] In an embodiment of the present invention, the method further includes:

[0025] Obtaining the suction movement speed of the first piston;

[0026] The rotation speed of the first stirring device in the first direction is determined according to the material suction movement speed.

[0027] In an embodiment of the present invention, determining the rotation speed of the first stirring device in the first direction according to the material suction movement speed includes:

[0028] Obtaining the cylinder diameter of the first concrete cylinder, the stroke of the first concrete cylinder, the diameter of the spiral blade of the first stirring device, the pitch of the spiral blade of the first stirring device, the filling coefficient and the inclined conveying coefficient of the material;

[0029] The rotation speed of the first stirring device in the first direction is determined according to the suction movement speed, cylinder diameter, stroke, diameter, pitch, filling coefficient and inclined conveying coefficient.

[0030] In an embodiment of the present invention, controlling the first stirring device to cyclically rotate in the first direction and the second direction includes:

[0031] The first stirring device is controlled to rotate in the second direction and the first direction in sequence.

[0032] In an embodiment of the present invention, the method further includes:

[0033] When the spiral directions of the spiral blades of the first stirring device and the second stirring device are opposite, controlling the second stirring device to rotate in the first direction or the second direction includes:

[0034] Controlling the second stirring device to rotate in a second direction;

[0035] When the spiral directions of the spiral blades of the first stirring device and the second stirring device are the same, controlling the second stirring device to rotate in the first direction or the second direction includes:

[0036] The second stirring device is controlled to rotate in the first direction.

[0037] In the embodiment of the present invention, the first stirring device and the second stirring device both further include: two scrapers respectively arranged at the head and tail of the spiral blade, and the two scrapers are parallel to the direction of the rotation center axis of the spiral blade.

[0038] A second aspect of the present invention provides a processor configured to execute the above-mentioned control method for a pumping and stirring system.

[0039] A third aspect of the present invention provides a pumping and stirring system, comprising:

[0040] Hopper, including:

[0041] The first stirring device and the second stirring device are respectively arranged at the first suction port and the second suction port of the hopper, and both include spiral blades;

[0042] The controller is configured as:

[0043] Control the first stirring device to rotate in a first direction, and control the second stirring device to rotate in the first direction and the second direction cyclically, so that the first stirring device stirs the material in the hopper and pushes it to the first suction port, and the second stirring device stirs the material back and forth between the direction close to and away from the second suction port;

[0044] The second stirring device is controlled to rotate in the first direction or the second direction, and the first stirring device is controlled to rotate cyclically in the first direction and the second direction, so that the second stirring device stirs the material and pushes it to the second suction port, and the first stirring device stirs the material back and forth between the directions close to and away from the first suction port.

[0045] In an embodiment of the present invention, the first stirring device and the second stirring device are respectively arranged at the first suction port and the second suction port of the hopper, and both the first stirring device and the second stirring device include spiral blades. In the process of controlling the first stirring device to rotate in the first direction, the second stirring device is simultaneously controlled to rotate cyclically in the first direction and the second direction, so that the first stirring device can stir the material in the hopper and push it to the first suction port, and the second stirring device can also stir the material back and forth between the direction close to and away from the second suction port.

[0046] Similarly, while controlling the second stirring device to rotate in the first direction or the second direction, the first stirring device is simultaneously controlled to rotate cyclically in the first direction and the second direction. This allows the second stirring device to stir the material and push it to the second suction port, while also allowing the first stirring device to stir the material back and forth between directions close to and away from the first suction port.

[0047] On the one hand, the material can be stirred back and forth in the hopper (the material can be stirred close to the suction port or away from the suction port), and the material is stirred evenly, fully, and stirred in a large range of forward and reverse directions; on the other hand, the two stirring devices can push the material from the side to the two suction ports in the hopper through spiral blades, thereby realizing the material transportation to the two suction ports, which has an auxiliary effect on the subsequent concrete cylinder piston pumping material process, improves the suction performance during the pumping process, and improves the material pumping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0049] Figure 1 A schematic diagram of the structure of a first stirring device according to an embodiment of the present invention is shown;

[0050] Figure 2 A schematic diagram of the structure of a hopper according to an embodiment of the present invention is shown;

[0051] Figure 3 A flow chart schematically shows a control method for a pumping and stirring system according to an embodiment of the present invention;

[0052] Figure 4A schematic diagram of a pumping and stirring system according to an embodiment of the present invention is shown;

[0053] Figure 5 A schematic diagram showing a structure of a first spiral blade weldment of a first stirring device according to an embodiment of the present invention;

[0054] Figure 6 The structure diagram of the second spiral blade weldment of the first stirring device according to an embodiment of the present invention is schematically shown;

[0055] Figure 7 The structure diagram of the third spiral blade weldment of the first stirring device according to an embodiment of the present invention is schematically shown;

[0056] Figure 8 A schematic diagram showing the structure of another spiral blade and a scraper according to an embodiment of the present invention;

[0057] Fig. 9 The signal coordination diagram of the pumping speed and the stirring speed according to an embodiment of the present invention is schematically shown.

[0058] Description of Reference Numerals

[0059] 10- spiral blade; 11- scraper;

[0060] 12- hopper; 13- first stirring device;

[0061] 14- second stirring device; 15- first suction port;

[0062] 16-second suction port; 17-first concrete cylinder;

[0063] 18-second concrete cylinder; 19-first piston;

[0064] 20-second piston; 21-first head end;

[0065] 22-first tail end; 23-second head end;

[0066] 24- second tail end; 25- rotation center axis;

[0067] 26-pump; 27-diverter valve;

[0068] 28-proportional valve; 29-reversing valve. DETAILED DESCRIPTION

[0069] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0070] It should be noted that if the implementation methods of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0071] In addition, if there are descriptions involving "first", "second", etc. in the implementation methods of this application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting 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 implementation methods can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0072] Figure 1 The structure diagram of the first stirring device according to an embodiment of the present invention is schematically shown. Figure 1 The first stirring device includes a spiral blade 10, and the structure of the second stirring device is similar to that of the first stirring device. Figure 2 The structure diagram of the hopper according to the embodiment of the present invention is schematically shown. Figure 2 A first stirring device 13 and a second stirring device 14 are provided in the hopper 12. The first stirring device 13 is provided at a first suction port 15 of the hopper 12, and the second stirring device 14 is provided at a second suction port 16 of the hopper.

[0073] Figure 3 The flowchart of the control method for the pumping stirring system according to the embodiment of the present invention is schematically shown. Figure 3 As shown, in one embodiment of the present invention, a control method for a pumping stirring system is provided, comprising the following steps:

[0074] Step 301, controlling the first stirring device 13 to rotate in a first direction, and controlling the second stirring device 14 to rotate in a first direction and a second direction in a cycle, so that the first stirring device 13 stirs the material in the hopper 12 and pushes it to the first suction port 15, and the second stirring device 14 stirs the material back and forth between the direction close to and away from the second suction port 16;

[0075] Step 302, control the second stirring device 14 to rotate in the first direction or the second direction, and control the first stirring device 13 to rotate cyclically in the first direction and the second direction, so that the second stirring device 14 stirs the material and pushes it to the second suction port 16, and the first stirring device 13 stirs the material back and forth between the direction close to and away from the first suction port 15.

[0076] In the embodiment of the present invention, the spiral directions of the spiral blades of the first stirring device 13 and the second stirring device 14 can be the same or opposite. Figure 2 In the illustration, the spiral directions of the spiral blades of the first stirring device 13 and the second stirring device 14 are opposite. The first stirring device 13 and the second stirring device 14 can be controlled independently or uniformly, and there is no limitation on this. For example, the first direction can be counterclockwise and the second direction can be clockwise.

[0077] In the process of the first stirring device 13 rotating in the first direction to realize the auxiliary material pushing function, the frequency of the second stirring device 14 rotating in the first direction and the second direction is not limited. That is to say, while controlling the first stirring device 13 to rotate in the first direction, the second stirring device 14 can be controlled to rotate in the first direction and the second direction at a higher frequency, or the second stirring device 14 can be controlled to rotate in the first direction and the second direction at a lower frequency. After the first stirring device 13 rotates in the first direction for a preset time, the auxiliary material pushing process of the first stirring device 13 is completed, and at this time, the second stirring device 14 is controlled to rotate in the first direction or the second direction, and the first stirring device 13 is controlled to rotate in the first direction and the second direction at the same time.

[0078] In the case where the spiral directions of the spiral blades of the first stirring device 13 and the second stirring device 14 are opposite, controlling the second stirring device 14 to rotate in the first direction or the second direction includes: controlling the second stirring device 14 to rotate in the second direction. In the case where the spiral directions of the spiral blades of the first stirring device 13 and the second stirring device 14 are the same, controlling the second stirring device 14 to rotate in the first direction or the second direction includes: controlling the second stirring device 14 to rotate in the first direction.

[0079] In this way, on the one hand, the material can be stirred back and forth in the hopper (the material can be stirred close to the suction port or away from the suction port), and the material can be stirred evenly, fully, and stirred in a large range of forward and reverse directions; on the other hand, the two stirring devices can push the material from the side to the two suction ports in the hopper through spiral blades, thereby realizing the material transportation to the two suction ports, which has an auxiliary effect on the subsequent concrete cylinder piston pumping material process, improves the suction performance during the pumping process, and improves the material pumping efficiency.

[0080] See also Figure 1In one embodiment, the first stirring device 13 and the second stirring device 14 also include: two scrapers 11 respectively arranged at the head and tail of the spiral blade 10, and the two scrapers 11 are parallel to the direction of the rotation center axis of the spiral blade 10.

[0081] If the first stirring device 13 is controlled to rotate in the first direction, the spiral blades of the first stirring device 13 and the scraper 11 away from the first suction port 15 can stir the material in the hopper and push it to the first suction port 15, realizing the auxiliary pushing function of the first stirring device 13. In the process of controlling the first stirring device 13 to rotate cyclically in the first direction and the second direction, when the first stirring device 13 rotates in the second direction, the spiral blades of the first stirring device 13 and the scraper 11 close to the first suction port 15 stir the material to the direction away from the first suction port 15, realizing the reverse stirring function. The control and application effects of the second stirring device 14 and the first stirring are similar, and will not be repeated here.

[0082] In one embodiment, controlling the first stirring device 13 to cyclically rotate in the first direction and the second direction includes: controlling the first stirring device 13 to cyclically rotate in the second direction and the first direction in sequence. After the first stirring device 13 rotates in the first direction for a preset time, the auxiliary material pushing process of the first stirring device 13 is completed, and the second stirring device 14 performs auxiliary material pushing, and at the same time controls the first stirring device 13 to cyclically rotate in the second direction and the first direction in sequence. Since the first stirring device 13 was previously rotating in the first direction, the starting point of the cyclic rotation of the first stirring device 13 is set to rotate in the second direction, so that the spiral blades of the first stirring device 13 and the scraper near the first suction port 15 first stir the material to the direction away from the first suction port 15, realizing the reverse stirring function, that is, the material can be stirred and the material extruded to the rear wall of the hopper 12 can be scraped away in the reverse direction to avoid the accumulation of the material on the rear side, and more effectively improve the uniformity of the lifting material.

[0083] Figure 4 The structure diagram of the pumping stirring system according to an embodiment of the present invention is schematically shown. Figure 4 In an embodiment of the present invention, the pumping and stirring system further comprises:

[0084] The first concrete cylinder 17 includes a first piston 19 disposed in the first concrete cylinder 17, and a first head end 21 of the first concrete cylinder 17 is connected to the first suction port 15;

[0085] The second concrete cylinder 18 includes a second piston 20 disposed in the second concrete cylinder 18, and a second head end 23 of the second concrete cylinder 18 is connected to the second suction port 16;

[0086] The method also includes:

[0087] During the process of the first piston 19 performing a suction movement from the first head end 21 to the first tail end 22 of the first concrete cylinder 17, the second piston 20 is controlled to synchronously perform a pushing movement from the second tail end 24 to the second head end 23 of the second concrete cylinder 18. The suction movement is used to suck the material from the hopper 12 to the first concrete cylinder 17.

[0088] When the first piston 19 performs a pushing motion from the first tail end 22 to the first head end 21 , the second piston 20 is controlled to synchronously perform a sucking motion from the second head end 23 to the second tail end 24 . The pushing motion is used to push the material out of the first concrete cylinder 17 .

[0089] In the embodiment of the present invention, the suction movement of the first piston 19 is used to suck the material from the hopper 12 to the first concrete cylinder 17. The pushing movement of the first piston 19 is used to push the material out of the first concrete cylinder 17. The suction movement of the second piston 20 is used to suck the material from the hopper 12 to the second concrete cylinder 18. The pushing movement of the second piston 20 is used to push the material out of the second concrete cylinder 18. While the first piston 19 performs the suction movement, the second piston 20 performs the pushing movement synchronously. While the first piston 19 performs the pushing movement, the first piston 19 performs the suction movement synchronously. In the process where the first piston 19 and the second piston 20 repeatedly perform the suction movement and the pushing movement, the material is pumped.

[0090] Exemplarily, the material may be concrete, and the material is concrete, and the spiral directions of the spiral blades of the first stirring device 13 and the second stirring device 14 are opposite. Since the first stirring device 13 can stir the concrete and push it to the first suction port 15 when rotating in the first direction, and the second stirring device 14 can stir the concrete and push it to the second suction port 16 when rotating in the second direction, that is, both stirring devices have an auxiliary material pushing function, realizing the material transportation to the two suction ports, and having an auxiliary effect on the subsequent concrete cylinder piston pumping concrete process, thereby improving the concrete pumping efficiency.

[0091] In one embodiment, the method further includes: obtaining a first position of the first piston 19; controlling the first stirring device 13 to rotate in the first direction includes: when the first position reaches the first suction port 15, controlling the first stirring device 13 to rotate in the first direction.

[0092] When the first position of the first piston 19 reaches the first suction port 15, that is, the first position of the first piston 19 reaches the first head end 21, it means that the first piston 19 has completed the pushing movement and is beginning to change direction to perform the suction movement. At this time, the first stirring device 13 is controlled to rotate in the first direction, so that the first stirring device 13 stirs the material in the hopper 12 and pushes it to the first suction port 15. In this way, the first stirring device 13 in the hopper 12 cooperates with the first piston 19 to have good adaptability, thereby improving the pumping efficiency and pumping effect of the material.

[0093] In one embodiment, the method also includes: obtaining the second position of the second piston 20; controlling the second stirring device 14 to rotate in the first direction or the second direction includes: when the second position reaches the second suction port 16, controlling the second stirring device 14 to rotate in the first direction or the second direction.

[0094] When the second position of the second piston 20 reaches the second suction port 16, that is, the second position of the second piston 20 reaches the second head end 23, it means that the second piston 20 has completed the pushing movement and is beginning to change direction to perform the suction movement. At this time, the second stirring device 14 is controlled to rotate in the second direction (for the convenience of explanation, the following examples are mostly given with the spiral directions of the spiral blades of the first stirring device 13 and the second stirring device 14 being opposite), so that the second stirring device 14 stirs the material in the hopper 12 and pushes it to the second suction port 16. In this way, the second stirring device 14 in the hopper 12 cooperates with the second piston 20 to have good adaptability, thereby improving the pumping efficiency and pumping effect of the material.

[0095] In one embodiment, the method further includes: obtaining the first material suction movement speed of the first piston 19; determining the rotation speed of the first stirring device 13 in the first direction according to the first material suction movement speed; in this way, the spiral conveying amount of the first stirring device 13 can be matched with the material suction amount of the first concrete cylinder 17. Similarly, the method further includes: obtaining the second material suction movement speed of the second piston 20; determining the rotation speed of the second stirring device 14 in the second direction according to the second material suction movement speed; in this way, the spiral conveying amount of the second stirring device 14 can be matched with the material suction amount of the second concrete cylinder 18, and the adaptability is good. In this way, it is avoided that the spiral conveying amount of the stirring device in the hopper 12 is too small, which makes the material suction amount of the concrete cylinder too small, resulting in affecting the subsequent pumping efficiency of the material; it is also avoided that the spiral conveying amount of the stirring device in the hopper 12 is too large, resulting in the accumulation of materials at the suction port of the hopper 12.

[0096] Specifically, in one embodiment, determining the rotation speed of the first stirring device 13 in the first direction according to the first material suction movement speed includes: obtaining the first cylinder diameter of the first concrete cylinder 17, the first stroke of the first concrete cylinder 17, the first diameter of the spiral blade of the first stirring device 13, the first pitch of the spiral blade of the first stirring device 13, the first filling coefficient and the first inclined conveying coefficient of the material; determining the rotation speed of the first stirring device 13 in the first direction according to the first material suction movement speed, the first cylinder diameter, the first stroke, the first diameter, the first pitch, the first filling coefficient and the first inclined conveying coefficient.

[0097] Similarly, determining the rotation speed of the second stirring device 14 in the second direction according to the second material suction movement speed includes: obtaining the second cylinder diameter of the second concrete cylinder 18, the second stroke of the second concrete cylinder 18, the second diameter of the spiral blade of the second stirring device 14, the second pitch of the spiral blade of the second stirring device 14, the second filling coefficient of the material, and the second inclined conveying coefficient; determining the rotation speed of the second stirring device 14 in the second direction according to the second material suction movement speed, the second cylinder diameter, the second stroke, the second diameter, the second pitch, the second filling coefficient, and the second inclined conveying coefficient.

[0098] Taking one of the stirring devices in the hopper 12 as an example, in order to ensure the suction effect of the concrete cylinder piston, the spiral conveying volume Q (t / h), the material suction volume Q' (t) of the concrete cylinder and the pumping speed V (times / min) need to be matched, and the stirring speed needs to be reasonably designed to ensure that Q = 60Q'·V. When the first stirring device 13 is used as an example, the pumping speed V is associated with the first suction movement speed and the first pushing movement speed of the first piston 19; the stirring speed is associated with the rotation speed of the first stirring device 13 in the first direction (which can be referred to as the rotation speed). By controlling the rotation speed (stirring speed) and the pumping speed to match, the spiral conveying volume of the spiral blade and the material suction volume of the concrete cylinder are matched, and the auxiliary suction function of the spiral blade during the pumping process is guaranteed.

[0099] In one embodiment, the empirical formula for the screw conveying volume is Q = 47D 2 ·S·n·Φ·λ·ε. Where D represents the diameter of the spiral blade (m), S represents the pitch of the spiral blade (m), n represents the speed of the mixing device (r / min), Φ represents the filling factor of the material, λ represents the unit volume mass of the material (t), and ε represents the inclined conveying coefficient. The two parameters Φ and ε can be selected from the empirical parameters of the screw conveyor design or obtained through experimental methods. For example, the filling factor Φ of concrete is 0.5~0.55, and the inclined conveying parameter ε with an inclination angle of 0 is 1.

[0100] In one embodiment, the single material intake amount (ie, the material intake amount of the concrete cylinder) Q'=λ·D' 2 ·π·L / 4. Where D' represents the diameter of the concrete cylinder (m); L represents the stroke of the concrete cylinder (m). In order to ensure that the spiral conveying capacity of the spiral blade matches the material intake capacity of the concrete cylinder, that is, to meet Q = 60Q'·V, the stirring speed (i.e., the rotation speed n) and the pumping speed V must meet n = (D' 2 ·L·D -2 ·S -1 ·Φ -1 ·ε -1)V. The pumping speed V is related to the suction and pushing speeds of the piston. In the embodiment of the present invention, by reasonably controlling the relationship between the rotation speed of the spiral blade and the pumping speed, the spiral conveying volume and the material suction volume of the concrete cylinder are matched, the auxiliary suction effect of the stirring device is improved, and then the pumping efficiency of the material is improved.

[0101] See also Figure 1 In one embodiment, the two scrapers 11 are parallel to the direction of the rotation center axis 25 of the spiral blade. Figure 2 The scraper relatively close to the suction port is marked as the first scraper, and the scraper relatively far from the suction port is marked as the second scraper. The second scraper can stir the material and push the material into the spiral blade; the first scraper can stir the material and scrape the material squeezed to the rear wall of the hopper 12 in reverse to avoid material accumulation on the rear side, thereby more effectively improving the uniformity of the lifting material.

[0102] The pumping and stirring system and the control method for the pumping and stirring system according to the embodiment of the present invention are further described below with reference to some specific implementations.

[0103] See also Figure 1 , the rotation center axis of the first stirring device 13 and the second stirring device 14 is perpendicular to the suction port surface of the concrete in the hopper 12, and the first stirring device 13 and the second stirring device 14 can be connected to the hopper 12 through a bearing seat. The spiral blades and scrapers of the first stirring device 13 and the second stirring device 14 are both arranged inside the hopper 12. The spiral blades of the first stirring device 13 are arranged in a left-handed direction, and the spiral blades of the second stirring device are arranged in a right-handed direction. The spiral directions of the spiral blades of the first stirring device 13 and the second stirring device 14 are opposite for illustration. The stirring shaft and the spiral blades of the stirring device can be driven to rotate by a driving device (motor or electric motor). The first stirring device 13 and the second stirring device 14 can rotate left and right. The first stirring device 13 rotates left (counterclockwise) to realize the lateral pushing function, pushing the material to the first suction port 15. The second stirring device 14 rotates right (clockwise) to realize the lateral pushing function, pushing the material to the second suction port 16. The first stirring device 13 rotates clockwise (clockwise) and the second stirring device 14 rotates counterclockwise (counterclockwise) to transport the material in the reverse direction (ie, stir the material to a direction away from the suction port), so that the material can be fully stirred.

[0104] When the distribution mechanism in the hopper 12 swings to the left, the second stirring device 14 rotates to the right to transport the material to the second suction port 16, and the first stirring device 13 rotates to the right to push the material previously transported to the front end in the opposite direction through the scraper to achieve full stirring of the material, and the first stirring device 13 can fully stir the material by repeatedly rotating forward and reversely (i.e., cyclically rotating counterclockwise and counterclockwise). When the distribution mechanism swings to the right, the first stirring device 13 rotates to the left to transport the material into the first suction port 15. That is, when one of the stirring devices is transporting the material, the other stirring device can fully stir the material by rotating forward and reversely. Therefore, the stirring device can achieve a wider range and more uniform stirring of the material through the structure of the spiral blades and the scraper and the forward and reverse rotation, and can also realize the function of conveying the material from the side through the spiral blades.

[0105] Figure 5 A schematic diagram showing a structure of a first spiral blade weldment of a first stirring device according to an embodiment of the present invention; Figure 6 The structure diagram of the second spiral blade weldment of the first stirring device according to an embodiment of the present invention is schematically shown; Figure 7 The structure diagram of the third spiral blade weldment of the first stirring device according to an embodiment of the present invention is schematically shown. Before being connected to the rotating central shaft 25, the first spiral blade weldment, the second spiral blade weldment and the third spiral blade weldment can be welded using tooling, or processed as a whole through processes such as extrusion and rolling. The spiral directions of the spiral blades of the first stirring device 13 and the spiral blades of the second stirring device 14 are opposite, and the structure of the second stirring device 14 is similar to that of the first stirring device 13, which will not be repeated here. Figure 8 A schematic diagram of another structure of a spiral blade and a scraper according to an embodiment of the present invention is shown, which can be seen in Figure 8 The scraper can be welded or assembled in multiple pieces at a certain angle along the direction of the rotation center axis 25, that is, the spiral blades and the scraper can have other reasonable structural forms, which are not limited to this.

[0106] In the embodiment of the present invention, the stirring device can rotate forward and reverse (i.e., counterclockwise and clockwise), and the material can be repeatedly pushed and stirred forward and backward by the spiral blades and the scraper, which can meet the stirring function of a wider range of materials and improve the stirring uniformity of the materials. The spiral blades of the stirring device can realize lateral feeding, so the rotating central shaft 25 can simultaneously realize the functions of large-scale stirring and lateral feeding of materials during the rotation process.

[0107] In the embodiment of the present invention, the cylinder propulsion position (i.e., the first position of the first piston 19 or the second position of the second piston 20) and the cylinder speed can be detected by the sensor signal, and the cylinder speed can be converted into a pumping speed as an input of the control unit to realize the control of distribution and stirring at the same time. The driving device of the stirring device can be a motor, Fig. 9 The signal matching diagram of the pumping speed and the stirring speed according to the embodiment of the present invention is schematically shown, which can be seen in Fig. 9 The two stirring devices are controlled by a pump 26, a diverter valve 27, two proportional valves 28 and two reversing valves 29 (see Fig. 9 The right frame part in the middle). Specifically, it is necessary to combine the input of electrical signals to control the rotation speed and direction of the motor through the proportional valve and the reversing valve. The two stirring devices can be linked controlled by the input of the electrical signals of the propulsion position and speed of the two oil cylinders, and the stirring speed and stirring direction can be matched with the oil cylinder suction (i.e. the concrete cylinder piston suction). Fig. 9 In the figure, the left frame part can be understood as the signal control diagram, and the right frame part can be understood as the hydraulic control diagram.

[0108] In addition to the motor, the driving device of the stirring device may also adopt other types of driving devices such as electric motors. Taking the electric motor as an example, the cylinder speed and cylinder position (that is, understood as the pumping speed and piston position) are obtained, and according to the relationship between the rotational speed n and the pumping speed V of the stirring device, an electrical signal corresponding to the stirring speed is output, and according to the cylinder position, an electrical signal corresponding to the stirring direction is output, and the relevant electrical signals are transmitted to the motor to determine the stirring speed and stirring direction.

[0109] Taking concrete as an example, the concrete pumping and mixing system has a great impact on the working efficiency of pumping equipment such as concrete pump trucks, vehicle-mounted pumps, trailer pumps, and wet spraying machines, and especially affects the mixing uniformity of materials in the hopper and the suction function during the pumping process. In an embodiment of the present invention, it relates to a mixing device with a new type of spiral and side-feeding mixing blades, and also relates to a mixing device that can assist in improving the concrete suction function and a corresponding control method. By reasonably designing the structural form of the spiral blades, the arrangement form of the spiral blades, and the corresponding control method, the mixing uniformity of the material and the suction function during the pumping process can be effectively improved, thereby assisting the material pumping process.

[0110] In the embodiment of the present invention, two sets of stirring devices are equipped in the hopper 12, which are arranged longitudinally on both sides of the distribution valve, and the two stirring devices are fixed to the front and rear walls of the hopper 12 through a double bearing seat. The stirring device is equipped with a spiral blade with a scraper, which can not only increase the stirring range, but also improve the uniformity of the material through forward and reverse rotation. The spiral blade also has a side feeding function, and the two stirring devices can be controlled in linkage. By controlling the stirring speed and direction to match the suction process, the spiral conveying amount is ensured to be synchronized with the oil cylinder suction amount (that is, the material suction amount of the concrete cylinder), which can effectively improve the suction efficiency, thereby improving the pumping efficiency.

[0111] An embodiment of the present invention provides a processor, wherein the processor is configured to execute any one of the control methods for a pumping and stirring system in the above embodiments.

[0112] The pumping mixing system includes:

[0113] Hopper, including:

[0114] The first stirring device and the second stirring device are respectively arranged at the first suction port and the second suction port of the hopper, and both include spiral blades;

[0115] Specifically, the processor may be configured to:

[0116] Control the first stirring device to rotate in a first direction, and control the second stirring device to rotate in the first direction and the second direction cyclically, so that the first stirring device stirs the material in the hopper and pushes it to the first suction port, and the second stirring device stirs the material back and forth between the direction close to and away from the second suction port;

[0117] The first stirring device is controlled to rotate in the first direction or the second direction, and the first stirring device is controlled to rotate cyclically in the first direction and the second direction, so that the second stirring device stirs the material and pushes it to the second suction port, and the first stirring device stirs the material back and forth between the direction close to and away from the first suction port.

[0118] In an embodiment of the present invention, the pumping and stirring system further comprises:

[0119] A first concrete cylinder, comprising a first piston disposed in the first concrete cylinder, wherein a first head end of the first concrete cylinder is connected to a first material suction port;

[0120] A second concrete cylinder, comprising a second piston disposed in the second concrete cylinder, wherein a second head end of the second concrete cylinder is connected to a second material suction port;

[0121] The processor is also configured to:

[0122] During the process of the first piston performing a material suction movement from the first head end to the first tail end of the first concrete cylinder, the second piston is controlled to synchronously perform a material pushing movement from the second tail end to the second head end of the second concrete cylinder, and the material suction movement is used to suck the material from the hopper into the first concrete cylinder;

[0123] When the first piston pushes the material from the first tail end to the first head end, the second piston is controlled to synchronously do the suction movement from the second head end to the second tail end. The pushing movement is used to push the material out of the first concrete cylinder.

[0124] In this embodiment of the present invention, the processor is further configured to:

[0125] obtaining a first position of a first piston;

[0126] Controlling the first stirring device to rotate in a first direction includes:

[0127] When the first position reaches the first suction port, the first stirring device is controlled to rotate in the first direction.

[0128] In this embodiment of the present invention, the processor is further configured to:

[0129] obtaining a second position of a second piston;

[0130] Controlling the second stirring device to rotate in the first direction or the second direction includes:

[0131] When the second position reaches the second material suction port, the second stirring device is controlled to rotate in the first direction or the second direction.

[0132] In this embodiment of the present invention, the processor is further configured to:

[0133] Obtaining the suction movement speed of the first piston;

[0134] The rotation speed of the first stirring device in the first direction is determined according to the material suction movement speed.

[0135] In this embodiment of the present invention, the processor is further configured to:

[0136] Determining the rotation speed of the first stirring device in the first direction according to the material suction movement speed includes:

[0137] Obtaining the cylinder diameter of the first concrete cylinder, the stroke of the first concrete cylinder, the diameter of the spiral blade of the first stirring device, the pitch of the spiral blade of the first stirring device, the filling coefficient and the inclined conveying coefficient of the material;

[0138] The rotation speed of the first stirring device in the first direction is determined according to the suction movement speed, cylinder diameter, stroke, diameter, pitch, filling coefficient and inclined conveying coefficient.

[0139] In this embodiment of the present invention, the processor is further configured to:

[0140] Controlling the first stirring device to cyclically rotate in the first direction and the second direction includes:

[0141] The first stirring device is controlled to rotate in the second direction and the first direction in sequence.

[0142] In this embodiment of the present invention, the processor is further configured to:

[0143] When the spiral directions of the spiral blades of the first stirring device and the second stirring device are opposite, controlling the second stirring device to rotate in the first direction or the second direction includes:

[0144] Controlling the second stirring device to rotate in a second direction;

[0145] When the spiral directions of the spiral blades of the first stirring device and the second stirring device are the same, controlling the second stirring device to rotate in the first direction or the second direction includes:

[0146] The second stirring device is controlled to rotate in the first direction.

[0147] In the embodiment of the present invention, the first stirring device and the second stirring device both further include: two scrapers respectively arranged at the head and tail of the spiral blade, and the two scrapers are parallel to the direction of the rotation center axis of the spiral blade.

[0148] An embodiment of the present invention provides a pumping and stirring system, comprising:

[0149] Hopper, including:

[0150] The first stirring device and the second stirring device are respectively arranged at the first suction port and the second suction port of the hopper, and both include spiral blades;

[0151] The controller is configured as:

[0152] Control the first stirring device to rotate in a first direction, and control the second stirring device to rotate in the first direction and the second direction cyclically, so that the first stirring device stirs the material in the hopper and pushes it to the first suction port, and the second stirring device stirs the material back and forth between the direction close to and away from the second suction port;

[0153] The second stirring device is controlled to rotate in the first direction or the second direction, and the first stirring device is controlled to rotate cyclically in the first direction and the second direction, so that the second stirring device stirs the material and pushes it to the second suction port, and the first stirring device stirs the material back and forth between the directions close to and away from the first suction port.

[0154] In an embodiment of the present invention, the system further includes:

[0155] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0156] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0157] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0158] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0159] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0160] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0161] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0162] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0163] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A control method for a pumping and stirring system, characterized in that: The pumping and stirring system comprises: Hopper, including: The first stirring device and the second stirring device are respectively arranged at the first suction port and the second suction port of the hopper, and both include spiral blades; The method comprises: Controlling the first stirring device to rotate in a first direction, and controlling the second stirring device to cyclically rotate in the first direction and the second direction, so that the first stirring device stirs the material in the hopper and pushes it to the first suction port, and the second stirring device stirs the material back and forth between a direction close to and a direction away from the second suction port; The second stirring device is controlled to rotate in the first direction or the second direction, and the first stirring device is controlled to rotate cyclically in the first direction and the second direction, so that the second stirring device stirs the material and pushes it to the second suction port, and the first stirring device stirs the material back and forth between the direction close to and away from the first suction port.

2. The method according to claim 1, characterized in that The pumping and stirring system also includes: A first concrete cylinder, comprising a first piston disposed in the first concrete cylinder, wherein a first head end of the first concrete cylinder is connected to the first material suction port; A second concrete cylinder, comprising a second piston disposed in the second concrete cylinder, wherein a second head end of the second concrete cylinder is connected to the second material suction port; The method further comprises: During the process of the first piston performing a material suction movement from the first head end to the first tail end of the first concrete cylinder, the second piston is controlled to synchronously perform a material pushing movement from the second tail end to the second head end of the second concrete cylinder, wherein the material suction movement is used to suck the material from the hopper into the first concrete cylinder; During the process of the first piston pushing material from the first tail end to the first head end, the second piston is controlled to synchronously do a suction material movement from the second head end to the second tail end, wherein the pushing material movement is used to push the material out of the first concrete cylinder.

3. The method according to claim 2, characterized in that The method further comprises: obtaining a first position of the first piston; The controlling the first stirring device to rotate in a first direction comprises: When the first position reaches the first suction port, the first stirring device is controlled to rotate in a first direction.

4. The method according to claim 3, characterized in that The method further comprises: acquiring a second position of the second piston; The controlling the second stirring device to rotate in the first direction or the second direction comprises: When the second position reaches the second suction port, the second stirring device is controlled to rotate in the first direction or the second direction.

5. The method according to claim 3, characterized in that: The method further comprises: Obtaining the material suction movement speed of the first piston; The rotation speed of the first stirring device in the first direction is determined according to the material suction movement speed.

6. The method according to claim 5, characterized in that The step of determining the rotation speed of the first stirring device in the first direction according to the material suction movement speed comprises: Obtaining the cylinder diameter of the first concrete cylinder, the stroke of the first concrete cylinder, the diameter of the spiral blade of the first stirring device, the pitch of the spiral blade of the first stirring device, the filling coefficient and the inclined conveying coefficient of the material; The rotation speed of the first stirring device in the first direction is determined according to the suction movement speed, the cylinder diameter, the stroke, the diameter, the pitch, the filling coefficient and the inclined conveying coefficient.

7. The method according to claim 1, characterized in that The controlling the first stirring device to cyclically rotate in the first direction and the second direction comprises: The first stirring device is controlled to cyclically rotate in the second direction and the first direction in sequence.

8. The method according to claim 1, characterized in that The method further comprises: In a case where the spiral directions of the spiral blades of the first stirring device and the second stirring device are opposite, controlling the second stirring device to rotate in the first direction or the second direction includes: controlling the second stirring device to rotate in the second direction; In the case where the spiral directions of the spiral blades of the first stirring device and the second stirring device are the same, controlling the second stirring device to rotate in the first direction or the second direction includes: The second stirring device is controlled to rotate toward the first direction.

9. The method according to any one of claims 1 to 8, characterized in that: The first stirring device and the second stirring device both further include: two scrapers respectively arranged at the head and tail of the spiral blade, and the two scrapers are parallel to the direction of the rotation center axis of the spiral blade.

10. A processor, characterized in that: The method is configured to execute the control method for a pumping and stirring system according to any one of claims 1 to 9.

11. A pumping and stirring system, characterized in that: include: Hopper, including: The first stirring device and the second stirring device are respectively arranged at the first suction port and the second suction port of the hopper, and both include spiral blades; The controller is configured as: Controlling the first stirring device to rotate in a first direction, and controlling the second stirring device to cyclically rotate in the first direction and the second direction, so that the first stirring device stirs the material in the hopper and pushes it to the first suction port, and the second stirring device stirs the material back and forth between a direction close to and a direction away from the second suction port; The second stirring device is controlled to rotate in the first direction or the second direction, and the first stirring device is controlled to rotate cyclically in the first direction and the second direction, so that the second stirring device stirs the material and pushes it to the second suction port, and the first stirring device stirs the material back and forth between the direction close to and away from the first suction port.

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