Special metering equipment for cement powder

Abstract

The utility model belongs to the technical field of powder metering, and particularly relates to cement powder special metering equipment which comprises a scale body, a rotor is arranged in the scale body, a feeding port is formed in one side of the top of the scale body, a discharging port is formed in the bottom of the scale body, and the discharging port is formed in the opposite side of the feeding port. A metering device is further arranged at the bottom of the scale body, the metering device is connected with a metering contact, the metering contact is arranged to be in contact with the scale body, the discharging port is connected with a material conveying barrel through a bag weighing device, and the bottom of the material conveying barrel is connected with a detachable cement powder containing bag. According to the cement powder weighing device, the overall weight of cement powder can be weighed, accurate weighing of the cement powder can be achieved, the problem that the cement powder is prone to flying and inaccurate in weighing is solved, the weighed cement powder is discharged into the corresponding cement powder containing bag, uninterrupted and accurate weighing and bagging operation is achieved, and the problem that the cement powder flies during discharging is further avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of powder metering, and in particular relates to a special metering device for cement powder. Background Art

[0002] At present, cement powder is mostly weighed by rotor scales, but there are still problems such as powder flying easily and inaccurate weighing. In addition, the rotor scale is usually placed at a high place. After weighing, the cement powder is loaded onto a transport vehicle located at the bottom of the rotor scale through a retractable pipe. This method makes the powder flying problem more serious. Even when loading after weighing, the powder flying and loss is still serious. In order to solve the above technical problems, it is necessary to improve the existing weighing device. Summary of the invention

[0003] The present application provides a special cement powder metering device, which solves the problem that cement powder is easy to fly and weighing is inaccurate.

[0004] An embodiment of the present application provides a special cement powder metering device, including a scale body, a rotor arranged inside the scale body, a feed port arranged on one side of the top of the scale body, a discharge port arranged on the bottom of the scale body, and the discharge port is arranged on the opposite side of the feed port. A metering device is also arranged at the bottom of the scale body, the metering device is connected to a metering contact, and the metering contact is arranged in contact with the scale body, the discharge port is connected to a feed barrel through a bag weighing device, and a detachable cement powder containing bag is connected to the bottom of the feed barrel.

[0005] Optionally, the bagged weighing device includes a first opening and closing door and a second opening and closing door, and sensors are provided on the first opening and closing door and the second opening and closing door, and the sensors are used to detect the weight of cement powder located on the first opening and closing door and the second opening and closing door.

[0006] Optionally, the first opening and closing door and the second opening and closing door are both connected to corresponding opening and closing door control cylinders; the sensor is electrically connected to a control system, and the control system is electrically connected to the opening and closing door control cylinders corresponding to the first opening and closing door and the second opening and closing door.

[0007] Optionally, the first opening and closing door and the second opening and closing door are each provided with two leaves.

[0008] Optionally, a limiting pad is provided between the two first opening and closing doors and between the two second opening and closing doors.

[0009] Optionally, the limiting pad is made of soft material.

[0010] Optionally, the feeding cylinder comprises a cylinder body, the top of the cylinder body is connected to a bag weighing device, and the bottom of the cylinder body is provided with two discharge ports, each of which is connected to a detachable cement powder containing bag.

[0011] Optionally, a first piston and two second pistons are arranged in the cylinder, the two second pistons are respectively located on both sides of the first piston, the first piston and the two second pistons are connected by a connecting shaft, and the connecting shaft is also connected to the feeding barrel cylinder;

[0012] A first cavity is formed between one of the second pistons and the first piston, and a second cavity is formed between the other second piston and the first piston.

[0013] Optionally, when the cement powder falls into the first cavity, the feeding cylinder drives the first piston and the two second pistons to move leftward, so that the first cavity is connected to the discharge port on the left side, and the cement powder falls into the corresponding cement powder bag. At this time, the second cavity receives the cement powder discharged downward from the bagged weighing device;

[0014] When the cement powder in the first cavity is discharged and the cement powder in the second cavity is collected, the feed tube cylinder drives the first piston and the two second pistons to move to the right, so that the second cavity is connected to the discharge port on the right side, and the cement powder is put into the corresponding cement powder bag. At this time, the first cavity receives the cement powder discharged downward by the bagged weighing device.

[0015] Optionally, the scale body is rotatably mounted on a support frame.

[0016] The present application provides a special cement powder metering device, which can not only weigh the overall weight of the cement powder, but also achieve accurate weighing of the cement powder through a bag weighing device, thereby solving the problem of cement powder flying easily and inaccurately weighed. By setting a feeding cylinder, the weighed cement powder is discharged into a corresponding cement powder bag, thereby achieving uninterrupted, accurate weighing and bagging operations, further avoiding the problem of cement powder flying when discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is a schematic diagram of the structure of the special cement powder metering equipment for this application;

[0019] Figure 2 This is a schematic diagram of another state structure of the cement powder metering equipment of this application;

[0020] Figure 3 A state diagram when the first opening and closing door is closed and the second opening and closing door is open;

[0021] Figure 4 This is a state diagram when the first opening and closing door is open and the second opening and closing door is closed.

[0022] Explanation of symbols in the figure:

[0023] 1- scale body; 2- scale frame; 3- interlocking support device; 4- support frame; 5- feed port; 6- discharge port; 7- bag weighing device; 8- feed cylinder; 9- metering device; 10- metering contact; 71- first opening and closing door; 72- second opening and closing door; 73- limit pad; 81- feed cylinder; 82- second piston; 83- first piston; 84- connecting shaft; 85- first cavity; 86- second cavity; 87- cement powder filling bag. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] A cement powder metering device provided in the embodiment of the present application is now described. Figure 1 and Figure 2 A cement powder special metering device includes a scale body 1, which is rotatably mounted on a support frame 4. Specifically, the scale body 1 is fixedly mounted on the bottom of the scale frame 2, and the scale frame 2 is mounted on the support frame 4 through a locking support device 3. The locking support device 3 in this application can adopt a locking support device in a locking support device for a rotor scale with a patent announcement number of CN217111129U, a patent application date of April 22, 2022, and a patent name of CN217111129U.

[0026] A rotor is arranged inside the scale body 1, and the rotor is driven to rotate by a power device arranged outside the scale body 1. A feed port 5 is arranged on one side of the top of the scale body 1, and cement powder is put into the scale body 1 through the feed port 5; a discharge port 6 is arranged at the bottom of the scale body 1, and the discharge port 6 is arranged on the opposite side of the feed port 5, and the cement powder is discharged from the discharge port 6 by the push of the rotor.

[0027] The bottom of the scale body 1 is also provided with a metering device 9, which is connected with a metering contact 10, and the metering contact 10 is provided in contact with the scale body 1. Through the arrangement of the metering contact 10 and the metering device 9, the overall weight of the cement powder can be weighed.

[0028] See also Figures 1 to 4, the discharge port 6 is connected to the feeding cylinder 8 through the bagged weighing device 7, and a detachable cement powder containing bag 87 is connected to the bottom of the feeding cylinder 8. Specifically, the bagged weighing device 7 includes a first opening and closing door 71 and a second opening and closing door 72, and the first opening and closing door 71 and the second opening and closing door 72 are driven by the corresponding opening and closing door control cylinder 11 to realize opening and closing. Sensors are provided on the first opening and closing door 71 and the second opening and closing door 72, and the sensors are electrically connected to the control system, and the control system is electrically connected to the opening and closing door control cylinders 11 corresponding to the first opening and closing door 71 and the second opening and closing door 72, thereby controlling the closing of the first opening and closing door 71 and the second opening and closing door 72. The sensor is used to detect the weight of the cement powder located on the first opening and closing door 71 and the second opening and closing door 72. During operation, the first opening and closing door 71 and the second opening and closing door 72 open and close alternately to ensure the continuity of the weighing work and the accuracy of the weighing. First, the first opening and closing door 71 is in a closed state and the second opening and closing door 72 is in a closed state. When the cement powder falls on the closed first opening and closing door 71, the sensor on the first opening and closing door 71 transmits a weight signal to the control system. The control system sends instructions through the preset control program of the prior art to make the first opening and closing door 71 open and the second opening and closing door 72 continue to close. When the first opening and closing door 71 opens to discharge a certain weight of cement powder and then closes, the cement powder falls on the closed second opening and closing door 72. A closed space is formed between the second opening and closing door 72 and the first opening and closing door 71, so that the cement powder is compressed in the closed space and is not easy to fly. The sensor on the second opening and closing door 72 further weighs its weight to ensure the accuracy of the weighing. If the weight is not enough, the first opening and closing door 72 can be opened to increase its weight. If the weight exceeds the standard, the size of the opening of the second opening and closing door 72 can be controlled to control the discharge, thereby accurately controlling the amount of material discharged. Through the coordinated cycle of the first opening and closing door 71 and the second opening and closing door 72, the accurate weighing of bagged cement powder is achieved.

[0029] Preferably, the first opening and closing door 71 and the second opening and closing door 72 are each provided with two leaves, see Figure 3 and Figure 4 In order to ensure that the first opening and closing door 71 and the second opening and closing door 72 are not pulled out during the pulling process, a limiting pad 73 is provided between the two first opening and closing doors 71 and between the two second opening and closing doors 72. The limiting pad 73 is made of a soft material such as rubber and can also play a sealing role.

[0030] See also Figure 1 and Figure 2 The feeding cylinder 8 comprises a cylinder body, the top of which is connected to a bag weighing device 7 , and the bottom of which is provided with two discharge ports, each of which is connected to a detachable cement powder containing bag 87 .

[0031] A first piston 83 and two second pistons 82 are arranged in the cylinder body. The two second pistons 82 are respectively located on both sides of the first piston 83. The first piston 83 and the two second pistons 82 are connected by a connecting shaft 84. The connecting shaft 84 is also connected to the feeding cylinder 81.

[0032] Furthermore, a first cavity 85 is formed between one of the second pistons 82 and the first piston 83, and a second cavity 86 is formed between the other second piston 82 and the first piston 83. When the bagged weighing device 7 discharges cement powder downward, the first cavity 85 is located between the two discharge ports at the bottom of the body, so that the weighed cement powder falls into the first cavity 85, and the cement powder is sealed in the first cavity 85 to prevent the cement powder from flying; then the feeding cylinder 81 drives the first piston 83 and the two second pistons 82 to move leftward, so that the first cavity 85 is connected to the discharge port on the left side, and the cement powder is put into the corresponding cement powder bag 87. At this time, the second cavity 86 receives the cement powder discharged downward by the bagged weighing device 7, and in this process, the cement powder in the first cavity 85 is given time to fall, so that all the cement powder in the first cavity 85 can enter the corresponding cement powder bag 87 as much as possible. When the cement powder in the first cavity 85 is discharged, the cement powder in the second cavity 86 is collected, and the feeding cylinder 81 drives the first piston 83 and the two second pistons 82 to move rightward, so that the second cavity 86 is connected to the discharge port on the right side, and the cement powder is put into the corresponding cement powder bag 87. This reciprocating process realizes the bag weighing of cement powder.

[0033] The electrical control parts involved in this application can be implemented using existing technologies, so they will not be described in detail.

[0034] When the cement powder metering device of the present application is in use, the support frame 4 can be placed above the second layer or other support bodies, and the feed cylinder 8 can be located below the first layer or other support bodies.

[0035] The present application provides a special cement powder metering device, which can not only weigh the overall weight of the cement powder, but also achieve accurate weighing of the cement powder through a bag weighing device, thereby solving the problem of cement powder flying easily and inaccurately weighed. By setting a feeding cylinder, the weighed cement powder is discharged into a corresponding cement powder bag, thereby achieving uninterrupted, accurate weighing and bagging operations, further avoiding the problem of cement powder flying when discharged.

[0036] In the description of the present application, it should be understood that terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A cement powder metering device, comprising a scale body, a rotor is arranged inside the scale body, a feed port is arranged on one side of the top of the scale body, a discharge port is arranged on the bottom of the scale body, and the discharge port is arranged on the opposite side of the feed port, characterized in that: A metering device is also provided at the bottom of the scale body, and the metering device is connected to a metering contact, and the metering contact is arranged in contact with the scale body. The discharge port is connected to a feed cylinder through a bag weighing device, and a detachable cement powder containing bag is connected to the bottom of the feed cylinder.

2. A cement powder metering device as claimed in claim 1, characterized in that: The bagged weighing device comprises a first opening and closing door and a second opening and closing door, wherein the first opening and closing door and the second opening and closing door are both provided with sensors, and the sensors are used to detect the weight of cement powder located on the first opening and closing door and the second opening and closing door.

3. A cement powder metering device as claimed in claim 2, characterized in that: The first opening and closing door and the second opening and closing door are both connected to corresponding opening and closing door control cylinders; the sensor is electrically connected to a control system, and the control system is electrically connected to the opening and closing door control cylinders corresponding to the first opening and closing door and the second opening and closing door.

4. A cement powder metering device as claimed in claim 3, characterized in that: The first opening and closing door and the second opening and closing door are each provided with two leaves.

5. A cement powder metering device as claimed in claim 4, characterized in that: Limiting pads are arranged between the two first opening and closing doors and between the two second opening and closing doors.

6. A cement powder metering device as claimed in claim 5, characterized in that: The limiting pad is made of soft material.

7. A cement powder metering device as claimed in claim 1, characterized in that: The feeding cylinder comprises a cylinder body, the top of the cylinder body is connected to a bag weighing device, and the bottom of the cylinder body is provided with two discharge ports, each of which is connected to a detachable cement powder containing bag.

8. A cement powder metering device as claimed in claim 7, characterized in that: A first piston and two second pistons are arranged in the cylinder, the two second pistons are respectively located on both sides of the first piston, the first piston and the two second pistons are connected by a connecting shaft, and the connecting shaft is also connected to the feeding cylinder; A first cavity is formed between one of the second pistons and the first piston, and a second cavity is formed between the other second piston and the first piston.

9. A cement powder metering device as claimed in claim 8, characterized in that: When the cement powder falls into the first cavity, the feeding cylinder drives the first piston and the two second pistons to move to the left, so that the first cavity is connected to the discharge port on the left side, and the cement powder falls into the corresponding cement powder bag. At this time, the second cavity receives the cement powder discharged downward by the bag weighing device; When the cement powder in the first cavity is discharged and the cement powder in the second cavity is collected, the feed tube cylinder drives the first piston and the two second pistons to move to the right, so that the second cavity is connected to the discharge port on the right side, and the cement powder is put into the corresponding cement powder bag. At this time, the first cavity receives the cement powder discharged downward by the bagged weighing device.

10. A cement powder metering device as claimed in claim 1, characterized in that: The scale body is rotatably mounted on the support frame.

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