CN114800860A - Control method of stirring device, stirring device and pumping equipment - Google Patents
Control method of stirring device, stirring device and pumping equipment Download PDFInfo
- Publication number
- CN114800860A CN114800860A CN202110129012.4A CN202110129012A CN114800860A CN 114800860 A CN114800860 A CN 114800860A CN 202110129012 A CN202110129012 A CN 202110129012A CN 114800860 A CN114800860 A CN 114800860A
- Authority
- CN
- China
- Prior art keywords
- period
- swing
- stirring
- stirring blade
- hopper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
- B28C5/14—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/0806—Details; Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Reciprocating Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a control method of a stirring device, the stirring device and pumping equipment. The stirring device comprises a hopper, a first conveying cylinder, a second conveying cylinder, a swing elbow, a conveying pipe and stirring blades arranged in the hopper, wherein the first conveying cylinder and the second conveying cylinder are respectively communicated with the hopper; the control method comprises the following steps: the stirring blades are controlled to run at different average rotating speeds in the stationary period and the swinging period, and the average rotating speed of the stirring blades in the stationary period is greater than that of the stirring blades in the swinging period of the swinging elbow. The invention can improve the material suction performance of the first conveying cylinder and the second conveying cylinder.
Description
Technical Field
The invention relates to the technical field of pumping equipment, in particular to a control method of a stirring device, the stirring device and the pumping equipment.
Background
When a pumping apparatus is used to pump a material such as a concrete pump, the material needs to be stirred and conveyed by a stirring device including a hopper, a stirring blade, and a conveying cylinder.
One of the deficiencies in the related art is that the suction performance of the delivery cylinder is not ideal.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems.
To this end, a first aspect of the invention provides a control method of a stirring device.
A second aspect of the invention provides a stirring device.
A third aspect of the invention provides a pumping apparatus.
In order to realize the first aspect of the present invention, an embodiment of the present invention provides a control method of a stirring apparatus, where the stirring apparatus includes a hopper, a first conveying cylinder and a second conveying cylinder respectively communicated with the hopper, a swing elbow provided in the hopper and including a first opening end and a second opening end, a conveying pipe communicated with the first opening end, and a stirring blade provided in the hopper, and in an operating state of the stirring apparatus, the swing elbow includes a rest period and a swing period, in the rest period, the first conveying cylinder or the second conveying cylinder is communicated with the conveying pipe through the swing elbow, and the swing period is used to switch communication between the second opening end and the first conveying cylinder or the second conveying cylinder; the control method comprises the following steps: the stirring blades are controlled to operate at different average rotating speeds in the stationary period and the swinging period, and the average rotating speed of the stirring blades in the stationary period is greater than that of the stirring blades in the swinging period.
The embodiment can reasonably control the change of the rotating speed of the stirring blade, so that the rotating speed of the stirring blade is changed in real time according to the conveying condition of the first conveying cylinder and the second conveying cylinder and the swing state of the swing elbow, and the material suction performance of the stirring device is improved.
In addition, the above technical solution of the present invention may further have the following additional technical features:
in the above technical solution, the swing period includes a first swing period and a second swing period after the first swing period, the rotation speed of the stirring blade is gradually reduced in the first pipe swing period, and the rotation speed of the stirring blade is kept constant in the second swing period.
The speed control mode enables the rotation speed of the stirring blade and the swing state of the swing elbow pipe to be mutually matched, so that the material suction performance of the stirring device is further improved.
In the first swing period, the rotation speed of the stirring blade is controlled by the following formula: n is (1+ K) × n 0 +K×n 0 ×cos[(π×t)/t 1 ](ii) a In the second swing period, the rotation speed of the stirring blade is controlled by the following formula: n is n 0 (ii) a Wherein n is the real-time rotating speed of the stirring blade, and n is 0 The set rotating speed of the stirring blade, t is the real-time of the stirring blade in the set period, t 1 K is a positive number for the duration of the first swing period.
The real-time rotating speed of the stirring blade gradually changes along with the time. In the first swing period, the real-time rotating speed of the stirring blade is gradually reduced from high to low, and in the second swing period, the real-time rotating speed of the stirring blade is kept constant. Therefore, the stirring blade can be decelerated in the early stage of the swing elbow and is constant in the later stage of the swing elbow.
In any of the above solutions, the stationary period includes a first stationary period during which the rotation speed of the stirring blade is gradually increased and a second stationary period after the first stationary period during which the rotation speed of the stirring blade is kept constant.
The speed control mode enables the rotating speed of the stirring blade and the static state of the swing elbow pipe to be mutually matched so as to further improve the material suction performance of the stirring device.
In any of the above technical solutions, in the first stationary period, the rotation speed of the stirring blade is controlled by the following formula: n is (1+ K) × n 0 +K×n 0 ×cos{[π×(t-t 1 -t 2 -t 3 )/t 3 ]}; in the second stationary period, the rotational speed of the stirring vanes is controlled by the following formula: n is (1+2K) × n 0 (ii) a Wherein n isReal-time rotational speed of the mixing blades, n 0 A set rotating speed of the stirring blade, t is a real-time of the stirring blade in a set period, the swing period comprises a first swing period and a second swing period after the first swing period, t 1 Is the duration of the first swing period, t 2 Is the duration of the second swing period, t 3 K is a positive number for the duration of the first quiet period.
The real-time rotating speed of the stirring blade gradually changes along with the time. In the first stationary period, the real-time rotating speed of the stirring blade is changed from n 0 Gradually rises, and in the second stationary period, the real-time rotating speed of the stirring blades is kept constant. Therefore, the embodiment can lead the stirring blades to be accelerated in the early stationary stage of the swing elbow and to be constant in the later stationary stage of the swing elbow.
To achieve the second aspect of the present invention, an embodiment of the present invention provides a stirring device including: the hopper is used for containing materials; the first conveying cylinder is communicated with the hopper and is used for sucking or pumping materials from the hopper; the second conveying cylinder is communicated with the hopper and is used for sucking or pumping materials from the hopper; the swing elbow is arranged in the hopper and comprises a first opening end and a second opening end which are oppositely arranged, and the swing elbow is used for switching the communication between the second opening end and the first conveying cylinder or the second conveying cylinder in a swing period; the conveying pipe is communicated with the second opening end and is used for conveying the materials from the first conveying cylinder or the second conveying cylinder out of the hopper; the stirring blade is arranged in the hopper and used for stirring materials; and the controller is used for controlling the swinging elbow to swing and controlling the average rotating speed of the stirring blades in the stationary period of the swinging elbow to be greater than the average rotating speed of the stirring blades in the swinging period of the swinging elbow.
The stirring device of this embodiment controls the average rotating speed of the stirring blades in the stationary period of the swing elbow to be greater than the average rotating speed of the stirring blades in the swing period of the swing elbow, that is, the stirring blades are controlled to rotate and the swing elbow is controlled to swing by using the control method of the stirring device of any embodiment of the present invention, so that the stirring device of any embodiment of the present invention has all the beneficial effects of the control method of the stirring device of any embodiment of the present invention.
In addition, the above technical solution of the present invention may further have the following additional technical features:
among the above-mentioned technical scheme, stirring vane includes: the first stirring blade is arranged in the hopper and close to one side of the first conveying cylinder; the second stirring blade is arranged in the hopper and close to one side of the second conveying cylinder; the stirring device further comprises a first driving device and a second driving device which are independently controlled, the first driving device is connected with the first stirring blade and used for driving the first stirring blade to rotate, and the second driving device is connected with the second stirring blade and used for driving the second stirring blade to rotate.
This embodiment can separately control the rotation speed of the first stirring blade and the rotation speed of the second stirring blade by using the control method of the stirring apparatus according to any of the embodiments of the present invention.
In any technical scheme, in a static state that the swing elbow is communicated with the first conveying cylinder, the average rotating speed of the second stirring blades is controlled to be greater than the average rotating speed of the second stirring blades in the swing period of the swing elbow; and in a static state that the swing elbow is communicated with the second conveying cylinder, controlling the average rotating speed of the first stirring blade to be greater than the average rotating speed of the first stirring blade in the swing period of the swing elbow.
In any of the above technical solutions, the first driving device includes a first motor, a first reducer and a first transmission, the first reducer and the first transmission being disposed on the first motor; the second driving device comprises a second motor, a second speed reducer arranged on the first motor and a second speed changer; wherein the first speed changer is used for adjusting the rotating speed of the first stirring blade, and the second speed changer is used for adjusting the rotating speed of the second stirring blade.
The motive power provided by the first motor is reduced by the first speed reducer and then transmitted to the first speed changer, and the first speed changer outputs a certain regular rotating speed to the first stirring blade through the control method of the stirring device according to any embodiment of the invention, so that the rotating speed of the first stirring blade is controlled to rotate. The motive power provided by the second motor is reduced by the second reducer and then transmitted to the second speed changer, and the second speed changer outputs a certain regular rotating speed to the second stirring blade through the control method of the stirring device according to any embodiment of the invention, so that the rotating speed of the second stirring blade is controlled to rotate.
To achieve the third aspect of the present invention, an embodiment of the present invention provides a pumping apparatus including: a pumping assembly; according to the stirring device in any technical scheme of the invention, the stirring device is used for supplying materials to the pumping assembly.
The pumping apparatus of this embodiment comprises the stirring device according to any of the embodiments of the present invention, and thus has all the advantageous effects of the stirring device according to any of the embodiments of the present invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view showing a structure of a stirring apparatus according to the related art;
FIG. 2 is a schematic structural diagram of a stirring device according to an embodiment of the present invention;
FIG. 3 is a second schematic structural view of a stirring device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the pumping equipment of the stirring device according to one embodiment of the present invention;
FIG. 5 is a flow chart illustrating the steps of a method for controlling a stirring device according to an embodiment of the present invention;
fig. 6 is a graph showing the change of the rotational speed of the stirring blade in a set period according to an embodiment of the present invention.
Wherein, the corresponding relationship between the reference numbers and the component names in fig. 1 is as follows:
100': stirring device, 160': a stirring blade.
Wherein, the correspondence between the reference numbers and the part names in fig. 2 to 4 is:
100: stirring device, 110: hopper, 120: first delivery cylinder, 130: second delivery cylinder, 140: swing elbow, 142: first open end, 144: second open end, 150: delivery pipe, 160: stirring blade, 162: first stirring blade, 164: second stirring blade, 170: first driving device, 172: first motor, 174: first speed reducer, 176: first transmission, 180: second driving device, 182: second motor, 184: second speed reducer, 186: second transmission, 200: pumping apparatus, 300: a pumping assembly.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention, taken in conjunction with the accompanying drawings and detailed description, is set forth below. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A control method of the stirring apparatus, the stirring apparatus 100, and the pumping device 200 according to some embodiments of the present invention are described below with reference to fig. 2 to 6.
As shown in fig. 1, in the concrete pumping process, the hopper is filled with concrete, and the stirring blade 160 ' of the stirring device 100 ' is disposed in the hopper, and mainly functions to stir the concrete in the hopper by using the rotation of the stirring blade 160 ' and prevent the concrete from segregation, agglomeration and the like. The stirring system in the related art adopts an integral stirring shaft, i.e. one stirring shaft, connecting two pairs of stirring blades 160 ', and the stirring blades 160' make synchronous motion, i.e.: the two pairs of stirring blades 160' are rotated at the same speed, so that they cannot be rotated at a speed adjusted by the actual state of the concrete in the hopper. In addition, a scheme of adopting a split type stirring shaft also exists in the related art, namely, two groups of stirring blades 160 ' are independently controlled through two stirring shafts, and the rotating speeds of the left stirring blade 160 ' and the right stirring blade 160 ' can be respectively controlled through stirring motors on the left side and the right side, but ideal speed adjustment of a stirring system cannot be realized. For this reason, the embodiment of the present invention provides the following method for controlling the stirring apparatus, the stirring apparatus 100, and the pumping device 200, so as to achieve the purposes of reasonably adjusting the rotation speed of the stirring blade 160 and improving the material suction performance of the conveying cylinder in the stirring apparatus.
Example 1:
as shown in fig. 5, the present embodiment provides a control method of the stirring apparatus 100. As shown in fig. 2 and 3, the stirring apparatus 100 includes a hopper 110, a first conveying cylinder 120 and a second conveying cylinder 130 respectively communicated with the hopper 110, a swing elbow 140 provided in the hopper 110 and including a first open end 142 and a second open end 144, a conveying pipe 150 communicated with the first open end 142, and a stirring blade 160 provided in the hopper 110, and in an operating state of the stirring apparatus 100, the swing elbow 140 includes a rest period in which the first conveying cylinder 120 or the second conveying cylinder 130 is communicated with the conveying pipe 150 through the swing elbow 140, and a swing period for switching communication between the second open end 144 and the first conveying cylinder 120 or the second conveying cylinder 130. The control method comprises the following steps:
and S102, controlling the stirring blade to run at different average rotating speeds in the stationary period and the swinging period, wherein the average rotating speed of the stirring blade in the stationary period is greater than the average rotating speed of the stirring blade in the swinging period.
The stirring device 100 of the present embodiment is used in a pumping facility 200 such as a concrete pump truck, and when the stirring device 100 is used, an operator pours a material such as concrete into the hopper 110, and the stirring blade 160 provided in the hopper 110 stirs the material. A first transfer cylinder 120 and a second transfer cylinder 130 are provided in parallel in a pair on either side wall of the hopper 110. The first and second transfer cylinders 120 and 130, respectively, are capable of drawing material from the hopper 110. The hopper 110 is further provided therein with a swing elbow 140, and the swing elbow 140 has an S-shaped curved shape, one end of which, and a side wall of the hopper 110, extends out of the hopper 110 and communicates with the delivery pipe 150. The other end is a free end. The swing elbow 140 includes a first opening end 142 and a second opening end 144 that are disposed opposite to each other, and since the swing elbow 140 has an S-shaped curved shape, when the swing elbow 140 swings about a central axis of the first opening end 142, the second opening end 144 performs reciprocating rotational swing about a circular path. Wherein the second open end 144, when swung into a position to interface with the first delivery cylinder 120, the first delivery cylinder 120 feeds material drawn from the hopper 110 through the swing elbow 140 into the delivery tube 150. Second open end 144, when swung into position to interface with second delivery cylinder 130, second delivery cylinder 130 feeds material drawn from hopper 110 through swing elbow 140 into delivery tube 150.
During operation of the stirring apparatus 100, the swing elbow 140 swings at a certain period, and the stirring blade 160 needs to be rotated to stir the material. During pumping of the pumping apparatus 200, the material within the hopper 110 is agitated by the dual action of the swing elbow 140 and the stirring blade 160. In a cycle period of the swing elbow 140, the flowing conditions of the materials in the hopper 110 at different times are obviously different, and particularly, the swing elbow 140 can drive the materials to flow in the swing process. In the actual material suction process of the related art, the swing elbow 140 is stationary, and only the stirring blade 160 rotates, and the above control method cannot effectively improve the material suction efficiency. For this reason, in the present embodiment, the rotation speed variation period of the stirring blade 160 during the material feeding and sucking process of the stirring apparatus 100 is matched with the pumping and sucking period of the swing elbow 140, so that the rotation speed variation period of the stirring blade 160 is equal to the pumping and sucking period of the swing elbow 140. Therefore, the present embodiment can reasonably control the rotation speed variation of the stirring blade 160, so that the rotation speed of the stirring blade 160 varies in real time according to the conveying conditions of the first conveying cylinder 120 and the second conveying cylinder 130 and the swing state of the swing elbow 140, and thus the material suction performance of the stirring apparatus 100 is improved.
Example 2:
the embodiment provides a control method of a stirring device. In addition to the technical features of the above-described embodiment, the present embodiment further includes the following technical features.
The swing period includes a first swing period during which the rotation speed of the agitating blade 160 is gradually reduced and a second swing period after the first swing period during which the rotation speed of the agitating blade 160 is kept constant.
This embodiment divides the set period of embodiment 1 into a swing period and a rest period during the operation of the stirring apparatus 100. Wherein the swing elbow 140 swings during a swing period and rests during a rest period. The present embodiment sets the rotation speed of the agitating blade 160 during the swing period to be relatively low, and sets the rotation speed of the agitating blade 160 during the stationary period to be relatively high.
Therefore, the embodiment can save energy consumption in the process of pumping and sucking materials, and can improve the flow performance of materials in the hopper 110 in the stationary period.
Specifically, the total duration of the period is set to T, where the stirring apparatus 100 first enters the swing period and then enters the rest period from 0.
Wherein the swing period comprises a first swing period and a second swing period, and the duration of the first swing period is t 1 The second swing period starts after the first swing period and has a duration t 2 . The rest period starts after the second swing period.
The quiet period includes a first quiet period and a second quiet period following the quiet period. Wherein the duration of the first quiescent period is t 3 The second quiescent period has a duration t 4 . The total duration T of the above-mentioned set period is equal to T 1 +t 12 +t 3 +t 4 。
As shown in FIG. 6, the present embodiment is performed from 0 to t 1 The rotation speed of the stirring blade 160 is controlled to be gradually reduced within the first swing period of the ended time range, and t 1 End to t 2 The stirring vane 160 is controlled to be kept constant during the second swing period of the time frame ending. Wherein, the first swing period is the early swing period, and the second swing period is the later swing period.
The speed control manner makes the rotation speed of the stirring blade 160 and the swing state of the swing elbow 140 mutually adapted so as to further improve the material suction performance of the stirring apparatus 100.
Example 3:
the present embodiment provides a control method of the stirring device 100. In addition to the technical features of the above-described embodiment, the present embodiment further includes the following technical features.
In the first swing period, the rotation speed of the agitating blade 160 is controlled by the following equation: n is (1+ K) × n 0 +K×n 0 ×cos[(π×t)/t 1 ](ii) a In the second swing period, the rotation speed of the agitating blade 160 is controlled by the following equation: n is n 0 (ii) a Where n is the real-time rotation speed of the stirring blade 160, and n is 0 Is the set rotation speed of the stirring blade 160, t is the real time of the stirring blade 160 in the set period, t 1 K is a positive number, e.g. 0.3, 0.5, 0.8, 1, 2, for the duration of the sweep period of the first sweep elbow.
The set rotation speed in the present embodiment can be selected and adjusted by those skilled in the art according to actual needs. The real-time rotation speed of the agitating blade 160 gradually changes with time. In the first swing period, the real-time rotation speed of the agitating blade 160 is set to (1+ K) × n 0 Gradually decrease to n 0 In the second swing period, the real-time rotation speed of the agitating blade 160 is n 0 Is kept constant. Thus, the present embodiment may allow the stirring blade 160 to decelerate in the early stage of the swing elbow 140 and to be constant in the later stage of the swing elbow 140.
Example 4:
the embodiment provides a control method of a stirring device. In addition to the technical features of the above-described embodiment, the present embodiment further includes the following technical features.
The stationary period includes a first stationary period during which the rotational speed of the agitating blade 160 is gradually increased and a second stationary period after the first stationary period during which the rotational speed of the agitating blade 160 is kept constant.
As shown in FIG. 6, the present embodiment is at t 2 End to t 3 The rotation speed of the stirring blade 160 is controlled to gradually increase during the first stationary period ending and at t 3 End to t 3 The stirring blade 160 is controlled to be kept constant during the second stationary period ending. Wherein the first stationary period is a stationary early period, and the second stationary period is a stationary late period.
The speed control method enables the rotation speed of the stirring blade 160 and the static state of the swing elbow 140 to be matched with each other, so as to further improve the material suction performance of the stirring device 100.
Example 5:
the present embodiment provides a control method of the stirring apparatus 100. In addition to the technical features of the above-described embodiment, the present embodiment further includes the following technical features.
During the first sweep elbow quiescent period, the rotational speed of the agitating blades 160 is controlled by the following equation: n is (1+ K) × n 0 +K×n 0 ×cos{[π×(t-t 1 -t 2 -t 3 )/t 3 ]}; during the second sweep elbow quiescent period, the rotational speed of the agitating blades (160) is controlled by the following equation: n is (1+2K) × n 0 (ii) a Where n is the real-time rotation speed of the stirring blade 160, and n is 0 For a set rotational speed of the stirring blade 160, t is the real time in which the stirring blade 160 is in a set period, the swing elbow swing period comprising a first swing elbow swing period and a second swing elbow swing period following the first swing elbow swing period, t 1 Is the length of the swing period of the first swing elbow, t 2 Is the duration of the swing period, t, of the second swing elbow 3 K is a positive number, such as 0.3, 0.5, 0.8, 1, 2, in the embodiment selected 0.5, for the duration of the first sweep elbow quiescent period.
The set rotation speed in the present embodiment can be selected and adjusted by those skilled in the art according to actual needs. The real-time rotation speed of the agitating blade 160 gradually changes with time. In the first stationary period, the real-time rotation speed of the stirring blade 160 is changed from n 0 Gradually increasing to (1+ 2K). times.n 0 In the second stationary period, the real-time rotation speed of the agitating blade 160 is (1+2K) × n 0 Is kept constant. Thus, the present embodiment may cause the blending blades 160 to increase in speed during the early stages of the standstill of the swing elbow 140 and to be constant during the late stages of the standstill of the swing elbow 140.
Example 6:
as shown in fig. 2 and 3, the present embodiment provides a stirring apparatus 100 including: a hopper 110, the hopper 110 being for containing material; a first delivery cylinder 120, the first delivery cylinder 120 being in communication with the hopper 110 for sucking or pumping material from the hopper 110; a second delivery cylinder 130, the second delivery cylinder 130 being in communication with the hopper 110 for sucking or pumping material from the hopper 110; a swing elbow 140, the swing elbow 140 being disposed in the hopper 110 and including a first open end 142 and a second open end 144 disposed opposite to each other, the swing elbow 140 being configured to switch communication between the second open end 144 and the first delivery cylinder 120 or the second delivery cylinder 130 during a swing period; a transfer pipe 150, the transfer pipe 150 communicating with the second open end 144 for transferring the material from the first transfer cylinder 120 or the second transfer cylinder 130 out of the hopper 110; the stirring blade 160, the stirring blade 160 is arranged in the hopper 110, and is used for stirring the materials; a controller for controlling the swing elbow 140 to swing and for controlling the average rotation speed of the stirring blade 160 during the stationary period of the swing elbow 140 to be greater than the average rotation speed of the stirring blade 160 during the swing period of the swing elbow 140.
The stirring apparatus 100 of the present embodiment, in which the controller is configured to control the average rotation speed of the stirring blade 160 in the stationary period of the swing elbow 140 to be greater than the average rotation speed of the stirring blade 160 in the swing period of the swing elbow 140, is equivalent to the control method of the stirring apparatus 100 according to any embodiment of the present invention, which is configured to control the stirring blade 160 to rotate and control the swing elbow 140 to swing, and thus has all the advantages of the control method of the stirring apparatus 100 according to any embodiment of the present invention.
Example 7:
as shown in fig. 2 and 3, the present embodiment provides a stirring device 100, and in addition to the technical features of the above embodiment, the present embodiment further includes the following technical features.
The agitating blade 160 includes: a first agitating blade 162, the first agitating blade 162 being provided in the hopper 110 near one side of the first conveying cylinder 120; a second agitating blade 164, the second agitating blade 164 being provided in the hopper 110 on a side close to the second conveying cylinder 130; wherein, the stirring device 100 further comprises a first driving device 170 and a second driving device 180 which are controlled independently from each other, the first driving device 170 is connected with the first stirring blade 162 and is used for driving the first stirring blade 162 to rotate, and the second driving device 180 is connected with the second stirring blade 164 and is used for driving the second stirring blade 164 to rotate.
In the present embodiment, the first stirring blade 162 and the second stirring blade 164 are disposed opposite to each other and can be separately controlled, so that the present embodiment can separately control the rotation speed of the first stirring blade 162 and the rotation speed of the second stirring blade 164 by using the control method of the stirring apparatus 100 according to any embodiment of the present invention.
Example 8:
the present embodiment provides a stirring device 100, and in addition to the technical features of the above-described embodiments, further includes the following technical features.
The controller is further configured to: in a static state that the swing elbow is communicated with the first conveying cylinder, controlling the average rotating speed of the second stirring blade to be greater than the average rotating speed of the second stirring blade in the swing period of the swing elbow; and in a static state that the swing elbow is communicated with the second conveying cylinder, controlling the average rotating speed of the first stirring blade to be greater than the average rotating speed of the first stirring blade in the swing period of the swing elbow.
The present embodiment controls the average rotation speed of the second agitating blade to be greater than the average rotation speed thereof during the oscillation period in the stationary state, and controls the average rotation speed of the first agitating blade to be greater than the average rotation speed thereof during the oscillation period. The control method aims at: frequent speed regulation of the stirring device 100 is avoided, stirring efficiency is guaranteed, and a speed regulation control mode is simplified.
Example 9:
as shown in fig. 2 and 3, the present embodiment provides a stirring device 100, and in addition to the technical features of the above embodiment, the present embodiment further includes the following technical features.
The first driving device 170 includes a first motor 172, a first reduction gear 174 provided on the first motor 172, and a first transmission 176. The second driving device 180 includes a second motor 182, a second reduction gear 184 provided on the first motor 172, and a second transmission 186. The first transmission 176 is used for adjusting the rotation speed of the first stirring blade 162, and the second transmission 186 is used for adjusting the rotation speed of the second stirring blade 164.
In this embodiment, the first motor 172 powers the rotation of the first agitating blade 162, and the second motor 182 powers the rotation of the second agitating blade 164. A first speed reducer 174 is provided on an output shaft of the first motor 172, and a second speed reducer 184 is provided on an output shaft of the second motor 182. The motive power provided by the first motor 172 is reduced by the first reducer 174 and then transmitted to the first transmission 176, and the first transmission 176 may be connected to the controller to control the average rotation speed of the first stirring blade 162 in the stationary period of the swing elbow 140 to be greater than the average rotation speed of the first stirring blade 162 in the swing period of the swing elbow 140, or to output a regular rotation speed to the first stirring blade 162 by the control method of the stirring apparatus 100 according to any embodiment of the present invention, so as to control the rotation speed of the first stirring blade 162 to rotate. The motive power provided by the second motor 182 is reduced by the second reducer 184 and then transmitted to the second transmission 186, and the second transmission 186 may be connected to the controller to control the average rotation speed of the second stirring blade 164 in the stationary period of the swing elbow 140 to be greater than the average rotation speed of the second stirring blade 164 in the swing period of the swing elbow 140, or to output a certain regular rotation speed to the second stirring blade 164 by the control method of the stirring apparatus 100 according to any embodiment of the present invention, so as to control the rotation speed of the second stirring blade 164 to rotate.
Further, in the stationary state where the swing elbow 140 is communicated with the first delivery cylinder 120, the average rotation speed of the second stirring blade 164 is controlled to be greater than the average rotation speed of the second stirring blade 164 in the swing period of the swing elbow 140; in the stationary state where the swing elbow 140 communicates with the second delivery cylinder 130, the average rotation speed of the first agitating blade 162 is controlled to be greater than the average rotation speed of the first agitating blade 162 during the swing period of the swing elbow 140. Through this scheme, only increase the stirring speed that is used for inhaling the stirring vane that the transport cylinder of material corresponds, can reduce the frequency of first stirring vane 162, the change of second stirring vane 164 speed, improve the life-span of first derailleur 176 and second derailleur 186.
Example 10:
as shown in fig. 4, the present embodiment provides a pumping apparatus 200 including: a pumping assembly 300 and a stirring device 100 according to any of the embodiments of the present invention, the stirring device 100 being adapted to supply material to the pumping assembly 300. The pumping device 200 of this embodiment may be a concrete pump truck, a trailer pump, a vehicle pump, a mortar pump, or the like. The pumping device 200 of the present embodiment includes the stirring apparatus 100 according to any embodiment of the present invention, and thus has all the advantageous effects of the stirring apparatus 100 according to any embodiment of the present invention.
Example 11:
the embodiment provides a control method of a stirring device and the stirring device 100. The stirring device 100 is used for a pumping apparatus 200, and the pumping apparatus 200 is used for pumping concrete. The control method comprises the following steps: and matching the variation cycle of the rotating speed of the stirring blade 160 with the pumping material suction cycle in the concrete feeding and suction process, so that the variation cycle of the rotating speed of the stirring blade 160 is equal to the pumping material suction cycle T2. In addition, in the operation process of the stirring apparatus 100, the present embodiment divides a period into two phases according to whether the swing elbow 140 swings, that is, a swing period of the swing elbow 140 and a rest period of the swing elbow 140. During the swing period of the swing elbow 140, the average speed of the stirring blade 160 is relatively low, so as to save energy consumption during the pumping process. During the quiescent period of the swing elbow 140, the average velocity of the mixing blades 160 is relatively high, which serves to enhance the flow properties of the concrete in the hopper 110.
The specific process of the control method is as follows.
In the swing period of the swing elbow 140, the swing elbow 140 is divided into the swing earlier stage (i.e., t is greater than or equal to 0 and less than or equal to t in FIG. 6) 1 Phase (d)), the post-swing period of the swing elbow 140 (i.e.: t in FIG. 6 1 ≤t≤t 1 +t 2 Stage (c).
T is more than or equal to 0 and less than or equal to t of the stirring blade 160 1 The rotational speed function of the stage (b) is: n is 1.5 Xn 0 +0.5×n 0 ×cos[(π×t)/t 1 ]. The stirring blade 160 is at t 1 ≤t≤t 1 +t 2 The rotational speed function of the stage (b) is: n is n 0 。
During the rest period of the swing elbow 140, the material suction early period is divided (i.e. t in fig. 6) 1 +t 2 ≤t≤t 1 +t 2 +t 3 Phase (c)), late stage of material pick-up (i.e.: drawing (A)T in 6 1 +t 2 +t 3 ≤t≤t 1 +t 2 +t 3 +t 4 Stage (d) of the stirring vanes 160 at t 1 +t 2 ≤t≤t 1 +t 2 +t 3 The rotational speed function of the stage (b) is: n is 1.5 Xn 0 +0.5×n 0 ×cos{[π×(t-t 1 -t 2 -t 3 )/t 3 ]}. The stirring blade 160 is at t 1 +t 2 +t 3 ≤t≤t 1 +t 2 +t 3 +t 4 The rotational speed function of the stage (b) is: n is 2 xn 0 。
Where n is the real-time rotational speed of the stirring blade 160, n 0 Is the set rotation speed of the stirring blade 160, t is the real time of the stirring blade 160 in the set period, t 1 Is the duration of the first swing period, t 2 Is the duration of the second swing period, t 3 Is the duration of the first quiet period. The total duration T of the above-mentioned set period is equal to T 1 +t 12 +t 3 +t 4 。
In order to realize the above-mentioned function of adjusting the stirring speed, a stirring device 100 for improving the material suction performance of concrete pumping and capable of adjusting the rotating speed of the stirring blade 160 is also needed. The stirring device 100 includes a hopper 110, a first delivery cylinder 120, a second delivery cylinder 130, a swing elbow 140, a delivery pipe 150, and a stirring blade 160. The hopper 110 is used to contain materials. The first transfer cylinder 120 is in communication with the hopper 110 for drawing material from the hopper 110. The second transfer cylinder 130 is in communication with the hopper 110 for drawing material from the hopper 110. The swing elbow 140 is disposed in the hopper 110 and includes a first open end 142 and a second open end 144 disposed opposite to each other, and the swing elbow 140 causes the first open end 142 to be in communication with the first delivery cylinder 120 or the second delivery cylinder 130 by swinging. A transfer tube 150 communicates with the second open end 144 for transferring material from the first transfer cylinder 120 or the second transfer cylinder 130 out of the hopper 110. The stirring blade 160 is provided in the hopper 110 for stirring the materials. The stirring apparatus 100 controls the stirring blade 160 to rotate and the swing elbow 140 to swing by using the control method of the stirring apparatus 100 according to any embodiment of the present invention. The agitating blade 160 includes: a first agitating blade 162 and a second agitating blade 164. The first driving device 170 is connected to the first agitating blade 162 and is configured to drive the first agitating blade 162 to rotate, and the second driving device 180 is connected to the second agitating blade 164 and is configured to drive the second agitating blade 164 to rotate. The first driving device 170 includes a first motor 172, a first speed reducer 174 disposed on the first motor 172, and a first transmission 176. The second driving device 180 includes a second motor 182, a second reduction gear 184 provided on the first motor 172, and a second transmission 186. The first transmission 176 is used for adjusting the rotation speed of the first stirring blade 162, and the second transmission 186 is used for adjusting the rotation speed of the second stirring blade 164. The first agitating blade 162 and the second agitating blade 164 of the present embodiment may be individually controlled. The input of the first transmission 176 and the second transmission 186 is constant speed rotation, and output variable speed rotation, and the output rotating speed thereof can be adjusted, and the specific implementation mode adopts a transmission mechanism such as an elliptic gear to realize variable speed adjustment.
In the embodiment, the average speed of the stirring blade 160 is controlled to be relatively low in the swing period of the swing elbow 140, so that energy consumption in the pumping and material sucking process is saved, and the average speed of the stirring blade 160 is controlled to be relatively high in the stationary period of the swing elbow 140, so that the flow property of concrete in the hopper 110 is improved, and the pumping and material sucking efficiency is improved. In addition, in the embodiment, the rotation speed of the stirring blade 160 is adjusted according to the reversing period of the swing elbow 140, the fluidity of the concrete in the adjusted hopper 110 of the concrete pumping system is better, and the pumping and material suction efficiency is further improved.
In summary, the embodiment of the invention has the following beneficial effects:
1. the embodiment of the present invention can reasonably control the rotation speed variation of the stirring blade 160, so that the rotation speed of the stirring blade 160 is changed in real time according to the conveying conditions of the first conveying cylinder 120 and the second conveying cylinder 130 and the swing state of the swing elbow 140, and thus the material suction performance of the stirring apparatus 100 is improved.
2. The embodiment of the invention can save energy consumption in the process of pumping and sucking materials and can improve the flow performance of the materials in the hopper 110 in the stationary period.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A control method of a stirring device is characterized in that the stirring device comprises a hopper, a first conveying cylinder and a second conveying cylinder which are respectively communicated with the hopper, a swing elbow arranged in the hopper and comprising a first opening end and a second opening end, a conveying pipe communicated with the first opening end, and a stirring blade arranged in the hopper, wherein in the working state of the stirring device, the swing elbow comprises a static period and a swing period, in the static period, the first conveying cylinder or the second conveying cylinder is communicated with the conveying pipe through the swing elbow, and the swing period is used for switching the communication between the second opening end and the first conveying cylinder or the second conveying cylinder; the control method comprises the following steps:
controlling the stirring blades to operate at different average rotating speeds in the stationary period and the swinging period, wherein the average rotating speed of the stirring blades in the stationary period is greater than that of the stirring blades in the swinging period.
2. The control method of the agitation apparatus according to claim 1, wherein the oscillation period includes a first oscillation period during which the rotation speed of the agitation blade is gradually reduced and a second oscillation period after the first oscillation period during which the rotation speed of the agitation blade is kept constant.
3. The control method of a stirring device according to claim 2,
in the first swing period, the rotation speed of the stirring blade is controlled by the following formula:
n＝×n 0 +K×n 0 ×cos[/t 1 ]；
in the second swing period, the rotation speed of the stirring blade is controlled by the following formula:
n＝n 0 ；
wherein n is the real-time rotating speed of the stirring blade, and n is 0 The set rotating speed of the stirring blade is t is the real time of the stirring blade in the set periodM, t 1 K is a positive number for the duration of the first swing period.
4. The control method of the agitation apparatus according to claim 1, wherein the stationary period includes a first stationary period during which the rotation speed of the agitation blade is gradually increased and a second stationary period after the first stationary period during which the rotation speed of the agitation blade is kept constant.
5. The control method of a stirring device according to claim 4,
in the first stationary period, the rotational speed of the stirring blade is controlled by the following formula:
n＝×n 0 +K×n 0 ×cos{[π×/t 3 ]}；
in the second stationary period, the rotational speed of the stirring blade is controlled by the following formula:
n＝×n 0 ；
wherein n is the real-time rotating speed of the stirring blade, and n is 0 Setting the rotating speed of the stirring blade, wherein t is the real-time of the stirring blade in the set period, the swing period comprises a first swing period and a second swing period after the first swing period, and t is the real-time of the stirring blade in the set period 1 Is the duration of the first swing period, t 2 Is the duration of the second swing period, t 3 K is a positive number for the duration of the first quiet period.
6. A stirring device, comprising:
a hopper for containing material;
a first delivery cylinder in communication with the hopper for drawing or pumping the material from the hopper;
a second delivery cylinder in communication with the hopper for drawing or pumping the material from the hopper;
the swing elbow is arranged in the hopper and comprises a first opening end and a second opening end which are oppositely arranged, and the swing elbow is used for switching the communication between the second opening end and the first conveying cylinder or the second conveying cylinder in a swing period;
a transfer tube in communication with the second open end for transferring the material from the first transfer cylinder or the second transfer cylinder out of the hopper;
the stirring blade is arranged in the hopper and is used for stirring the materials;
and the controller is used for controlling the swing elbow to swing and controlling the average rotating speed of the stirring blades in the stationary period of the swing elbow to be greater than the average rotating speed of the stirring blades in the swing period of the swing elbow.
7. The stirring device of claim 6, wherein the stirring blade comprises:
the first stirring blade is arranged in the hopper and is close to one side of the first conveying cylinder;
the second stirring blade is arranged in the hopper and close to one side of the second conveying cylinder;
the stirring device further comprises a first driving device and a second driving device which are independently controlled, the first driving device is connected with the first stirring blade and used for driving the first stirring blade to rotate, and the second driving device is connected with the second stirring blade and used for driving the second stirring blade to rotate.
8. The blending device of claim 7, wherein the controller is further configured to:
in a static state that the swing elbow is communicated with the first conveying cylinder, controlling the average rotating speed of the second stirring blades to be greater than the average rotating speed of the second stirring blades in the swing period of the swing elbow;
and in a static state that the swing elbow is communicated with the second conveying cylinder, controlling the average rotating speed of the first stirring blades to be greater than the average rotating speed of the first stirring blades in the swing period of the swing elbow.
9. The stirring device of claim 8,
the first driving device comprises a first motor, a first speed reducer arranged on the first motor and a first speed changer;
the second driving device comprises a second motor, a second speed reducer arranged on the first motor and a second speed changer;
wherein the first transmission is used for adjusting the rotation speed of the first stirring blade, and the second transmission is used for adjusting the rotation speed of the second stirring blade.
10. A pumping apparatus, comprising:
a pumping assembly;
a blending assembly as claimed in any one of claims 6 to 9, which is adapted to supply material to the pumping assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110129012.4A CN114800860B (en) | 2021-01-29 | 2021-01-29 | Control method of stirring device, stirring device and pumping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110129012.4A CN114800860B (en) | 2021-01-29 | 2021-01-29 | Control method of stirring device, stirring device and pumping equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114800860A true CN114800860A (en) | 2022-07-29 |
| CN114800860B CN114800860B (en) | 2023-05-12 |
Family
ID=82526676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110129012.4A Active CN114800860B (en) | 2021-01-29 | 2021-01-29 | Control method of stirring device, stirring device and pumping equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114800860B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066804A (en) * | 1990-03-09 | 1992-12-09 | 帕姆普泰克公司 | The method and apparatus of mixing solids and fluid |
| DE4124220A1 (en) * | 1991-07-20 | 1993-01-21 | Putzmeister Maschf | MATERIAL TASK CONTAINER FOR HIGH VOLUME PUMPS |
| JPH09144058A (en) * | 1995-11-28 | 1997-06-03 | Fudo Constr Co Ltd | Device for producing fluidized treatment soil |
| US5660467A (en) * | 1994-11-18 | 1997-08-26 | The Yokohama Rubber Co., Ltd. | Raw material mixing method and apparatus |
| EP1000718A2 (en) * | 1998-11-05 | 2000-05-17 | Wildgruber Baustoffwerke GmbH & Co. KG | Mixer for making a pumpable mortar |
| CN101881263A (en) * | 2009-12-31 | 2010-11-10 | 三一重工股份有限公司 | Pumping system and concrete pump truck having the same |
| CN110337568A (en) * | 2017-03-03 | 2019-10-15 | Ksb股份有限公司 | For adjusting the method and circulating pump of the circulating pump of variable speed |
| CN111055378A (en) * | 2019-12-31 | 2020-04-24 | 湘潭大学 | Concrete intelligent pumping system and operation method |
| CN111391123A (en) * | 2020-03-20 | 2020-07-10 | 三一汽车制造有限公司 | Stirring system, concrete pumping system, control method of concrete pumping system and storage medium |
| CN113187712A (en) * | 2021-04-28 | 2021-07-30 | 湘潭大学 | Piston movement speed matching method for improving material suction performance of concrete pumping |
-
2021
- 2021-01-29 CN CN202110129012.4A patent/CN114800860B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066804A (en) * | 1990-03-09 | 1992-12-09 | 帕姆普泰克公司 | The method and apparatus of mixing solids and fluid |
| DE4124220A1 (en) * | 1991-07-20 | 1993-01-21 | Putzmeister Maschf | MATERIAL TASK CONTAINER FOR HIGH VOLUME PUMPS |
| US5660467A (en) * | 1994-11-18 | 1997-08-26 | The Yokohama Rubber Co., Ltd. | Raw material mixing method and apparatus |
| JPH09144058A (en) * | 1995-11-28 | 1997-06-03 | Fudo Constr Co Ltd | Device for producing fluidized treatment soil |
| EP1000718A2 (en) * | 1998-11-05 | 2000-05-17 | Wildgruber Baustoffwerke GmbH & Co. KG | Mixer for making a pumpable mortar |
| CN101881263A (en) * | 2009-12-31 | 2010-11-10 | 三一重工股份有限公司 | Pumping system and concrete pump truck having the same |
| CN110337568A (en) * | 2017-03-03 | 2019-10-15 | Ksb股份有限公司 | For adjusting the method and circulating pump of the circulating pump of variable speed |
| CN111055378A (en) * | 2019-12-31 | 2020-04-24 | 湘潭大学 | Concrete intelligent pumping system and operation method |
| CN111391123A (en) * | 2020-03-20 | 2020-07-10 | 三一汽车制造有限公司 | Stirring system, concrete pumping system, control method of concrete pumping system and storage medium |
| CN113187712A (en) * | 2021-04-28 | 2021-07-30 | 湘潭大学 | Piston movement speed matching method for improving material suction performance of concrete pumping |
Non-Patent Citations (1)
| Title |
|---|
| "无泄漏压力旋转接头", 能源研究与信息 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114800860B (en) | 2023-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110281387B (en) | Building material processingequipment | |
| CN111391123B (en) | Stirring system, concrete pumping system, control method of concrete pumping system and storage medium | |
| CN111331729B (en) | Stirring system, pumping machine, control method thereof and storage medium | |
| CN105797636B (en) | A kind of Three Degree Of Freedom vibration stirring device | |
| CN114800860A (en) | Control method of stirring device, stirring device and pumping equipment | |
| CN110420586A (en) | It is a kind of can uniform stirring and with elevating function agitator | |
| CN211487472U (en) | Efficient mine mixing and stirring machine | |
| CN108970433A (en) | A kind of solid-liquid mixes defeated device | |
| CN112957943A (en) | Stirring equipment for sizing machine | |
| CN201816138U (en) | Sand pulp stir device | |
| CN219563688U (en) | Stirring device for dry-mixed mortar storage tank and dry-mixed mortar storage tank | |
| CN219784553U (en) | Quick-mixing type efficient auxiliary adding mechanism for paper machine | |
| CN112960933B (en) | Composite foam concrete foaming agent and preparation device and preparation method thereof | |
| CN213966613U (en) | Slurry stirring device in reaction kettle | |
| CN220257900U (en) | Mixing arrangement is used in fertilizer processing | |
| CN106976162A (en) | A kind of follow-on mortar mixer | |
| CN218019359U (en) | Vertical stirring device | |
| CN212040210U (en) | Simple mixing machine | |
| CN220310267U (en) | Mixing arrangement is used in dispersant production | |
| CN215428711U (en) | Gravity-free stirrer | |
| CN219815923U (en) | High-efficient cooling's caking mixes machine is prevented to baking powder | |
| CN215996349U (en) | Rotary propeller type solid-liquid batching device | |
| CN219338073U (en) | Mixing device for production raw materials of standard bricks | |
| CN208711573U (en) | A kind of efficient three-dimensional motion mixer | |
| CN220840849U (en) | Dry-mixed mortar mixer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |