Cement tank break arch joint control system

Abstract

The utility model discloses cement tank breaks arch joint control system, including cement tank, the cross of the intracavity bottom vertebra of cement tank has screw rod subassembly, both ends of screw rod subassembly all with the lateral wall rotation connection of cement tank, the discharge port of cement tank is linked together with the inlet of first screw conveyer, the discharge port of first screw conveyer is linked together with the inlet of relay bin, install first material level sensor on the intracavity lower section lateral wall of relay bin, first material level sensor with control unit of drive motor all are connected with PLC controller, the utility model has the advantageous effects: through material level sensor to relay bin in material whether the real -time monitoring of lack, thereby judges cement tank whether the arching phenomenon of taking place, starts screw rod subassembly operation to complete broken arch, realizes cement tank broken arch joint control intelligent operation, and the broken arch effect is better, and the cement raw material can be transported in time, thereby ensure the production progress and factory quality of concrete.

Description

Technical fields:

[0001] This utility model belongs to the field of cement preparation, and in particular relates to a cement tank arch breaking and control system. Background technology:

[0002] Cement silos are a common piece of equipment in concrete mixing plants, primarily used for storing powdered cement raw materials. However, in the actual concrete production process, cement raw materials are prone to arching at the bottom cone of the cement silo. The reasons for this are varied: Firstly, when cement raw materials accumulate in the silo for extended periods, some damp cement raw materials experience slower flow and gradually arch as they pass through the bottom cone. Secondly, when cement raw materials are replenished, the difference in dryness between new and old materials can easily cause arching at the stratification points. Ultimately, at the bottom cone of the silo, the cement raw materials are in a state of bridging, rat holes, or clinging to the walls, making normal discharge impossible.

[0003] In existing technologies, vibratory motors or air pumps are typically used to break up cement bridging. While these methods have some effect, the frequent vibrations of the vibratory motors can cause localized deformation and damage at the bottom cone of the cement silo. They can also exacerbate the problem of poor material discharge from the cement silo. Furthermore, the air pump nozzles are prone to blockage during use, resulting in poor bridging performance. Ultimately, this leads to the cement raw materials not being delivered in a timely manner during concrete mixing, resulting in unstable mixing ratios of raw materials, which affects production progress and the quality of the concrete leaving the factory. Summary of the Invention:

[0004] The purpose of this utility model is to provide a cement silo arch breaking and control system, which overcomes the shortcomings of the prior art and effectively solves the existing problem of poor cement silo arch breaking.

[0005] The present invention relates to a cement silo arch-breaking control system, comprising a cement silo, wherein a helical rod assembly is transversely spanned at the cone-shaped bottom of the inner cavity of the cement silo, both ends of the helical rod assembly are rotatably connected to the side wall of the cement silo, one end of the helical rod assembly is connected to a drive motor, the drive motor is fixedly mounted on the outer wall of the cement silo, the discharge port of the cement silo is connected to the inlet of a first screw conveyor, the discharge port of the first screw conveyor is connected to the inlet of a relay bin, a first material level sensor is installed on the lower side wall of the inner cavity of the relay bin, and the control unit of the first material level sensor and the drive motor are both connected to a PLC controller.

[0006] Furthermore, the screw rod assembly comprises a forward-rotating screw rod and a reverse-rotating screw rod, with one end of the forward-rotating screw rod and one end of the reverse-rotating screw rod being coaxially and fixedly connected.

[0007] Furthermore, a second material level sensor is installed on the upper side wall of the inner cavity of the relay chamber, and the control unit of the second material level sensor is connected to the PLC controller.

[0008] Furthermore, the discharge port of the relay bin is connected to the inlet of the second screw conveyor, and the discharge port of the second screw conveyor is connected to the inlet of the mixing tank.

[0009] Furthermore, the control unit of the second screw conveyor is connected to the PLC controller.

[0010] The beneficial effects of this utility model are as follows: By monitoring the material level in the relay silo in real time, the material level sensor can determine whether the cement silo is arching. The screw rod assembly is then activated to break the arch, realizing intelligent operation of the cement silo arch breaking system. The arch breaking effect is better, and the cement raw materials can be transported in a timely manner, thereby ensuring the production progress and quality of concrete. Attached image description:

[0011] Figure 1 This is an overall structural view of the present invention;

[0012] Figure 2 This is a structural view of the screw rod assembly in this utility model;

[0013] Figure 3 This is a circuit control view of the present invention;

[0014] In the diagram, 1 is a cement silo, 2 is a screw assembly, 21 is a forward rotating screw, 22 is a reverse rotating screw, 3 is a drive motor, 4 is a first screw conveyor, 5 is a relay bin, 6 is a first level sensor, 7 is a PLC controller, 8 is a second level sensor, 9 is a second screw conveyor, and 10 is a mixing tank. Detailed implementation method:

[0015] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings:

[0016] like Figures 1 to 3As shown, the cement silo arch-breaking control system includes a cement silo 1. A helical rod assembly 2 spans across the cone-shaped structure at the bottom of the inner cavity of the cement silo 1. Both ends of the helical rod assembly 2 are rotatably connected to the side wall of the cement silo 1. One end of the helical rod assembly 2 is connected to a drive motor 3. The drive motor 3 is fixedly installed on the outer wall of the cement silo 1. The discharge port of the cement silo 1 is connected to the inlet of a first screw conveyor 4. The discharge port of the first screw conveyor 4 is connected to the inlet of a relay bin 5. A first level sensor 6 is installed on the lower side wall of the inner cavity of the relay bin 5. The control unit of the first level sensor 6 and the drive motor 3... The components are all connected to the PLC controller 7; the screw assembly 2 consists of a forward rotating screw 21 and a reverse rotating screw 22, one end of the forward rotating screw 21 and one end of the reverse rotating screw 22 are coaxially and fixedly connected; a second material level sensor 8 is installed on the upper side wall of the inner cavity of the relay chamber 5, and the control unit of the second material level sensor 8 is connected to the PLC controller 7; the discharge port of the relay chamber 5 is connected to the inlet of the second screw conveyor 9, and the discharge port of the second screw conveyor 9 is connected to the inlet of the mixing tank 10; the control unit of the second screw conveyor 9 is connected to the PLC controller 7.

[0017] Specifically, the first material level sensor 6 can monitor whether the material in the relay bin 5 is lacking in the first instance, thereby determining whether the cement silo 1 has arched, and starting the screw rod assembly 2 to complete the arch breaking, realizing the joint control operation of cement silo arch breaking.

[0018] In actual use, the cement raw materials stored in cement silo 1 are metered by the first screw conveyor 4 and then transferred to the intermediate silo 5. After a short stay in the intermediate silo 5, the cement raw materials are transferred to the mixing tank 10 by the second screw conveyor 9, where they are mixed with other aggregates to form concrete products. During the above process, the first level sensor 6 monitors in real time whether the cement raw materials in the intermediate silo 5 are insufficient. When the cement raw materials are lower than the monitoring line of the first level sensor 6, it means that the cement raw materials in cement silo 1 have stopped flowing and the cement silo 1 has formed an arch. At this time, the first level sensor 6 sends a warning signal and transmits it to the PLC controller 7. The PLC controller 7 sends a command signal to start the drive motor 3 to drive the screw rod assembly 2. The cement raw materials that have formed an arch at the bottom cone of cement silo 1 are loosened and fall off by the screw rod assembly 2, thereby breaking the arch in cement silo 1 and restoring the normal conveying of cement raw materials.

[0019] During the arching process of the screw assembly 2, the forward-rotating screw 21 and the reverse-rotating screw 22 can simultaneously push the cement raw materials accumulated on both sides of the bottom cone of the cement silo 1 towards the center, thereby further improving the arch-breaking effect and discharge smoothness of the cement silo 1. When the amount of cement material in the relay bin 5 returns to the normal value, it will trigger the second material level sensor 8 to send a signal to the PLC controller 7. At this time, the PLC controller 7 will send a command signal to shut down the drive motor 3 and stop the screw assembly 2, thereby further reducing the additional power consumption caused by the arch breaking of the cement silo 1. When the relay bin 5 experiences a material shortage or resumes normal material supply, the PLC controller 7 can simultaneously send a command signal to the control unit of the second screw conveyor 9 to stop or resume operation, thereby further reducing the additional power consumption caused by the second screw conveyor 9 and realizing the joint control of the cement silo arch breaking.

[0020] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cement silo arch breaking and control system, comprising a cement silo (1), characterized in that: A helical rod assembly (2) spans across the cone at the bottom of the inner cavity of the cement tank (1). Both ends of the helical rod assembly (2) are rotatably connected to the side wall of the cement tank (1). One end of the helical rod assembly (2) is connected to the drive motor (3). The drive motor (3) is fixedly installed on the outer wall of the cement tank (1). The discharge port of the cement tank (1) is connected to the inlet of the first screw conveyor (4). The discharge port of the first screw conveyor (4) is connected to the inlet of the relay bin (5). A first material level sensor (6) is installed on the lower side wall of the inner cavity of the relay bin (5). The control units of the first material level sensor (6) and the drive motor (3) are both connected to the PLC controller (7).

2. The cement silo arch breaking and control system according to claim 1, characterized in that: The screw rod assembly (2) consists of a forward rotating screw rod (21) and a reverse rotating screw rod (22), with one end of the forward rotating screw rod (21) and one end of the reverse rotating screw rod (22) being coaxially and fixedly connected.

3. The cement silo arch breaking and control system according to claim 1, characterized in that: A second material level sensor (8) is installed on the upper side wall of the inner cavity of the relay chamber (5), and the control unit of the second material level sensor (8) is connected to the PLC controller (7).

4. The cement silo arch breaking and control system according to claim 1, characterized in that: The discharge port of the relay bin (5) is connected to the inlet of the second screw conveyor (9), and the discharge port of the second screw conveyor (9) is connected to the inlet of the mixing tank (10).

5. The cement silo arch breaking and control system according to claim 4, characterized in that: The control unit of the second screw conveyor (9) is connected to the PLC controller (7).

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