Novel automatic and accurate feeding device for macromolecular grinding aid

Abstract

The utility model belongs to the technical field of cement raw material production, and particularly relates to a novel polymer grinding aid automatic accurate feeding device which comprises a conveying pipeline and an arc-shaped spray head, the middle of the arc-shaped spray head is connected to the tail end of the conveying pipeline, and nozzles on the arc-shaped spray head are symmetrically arranged. The interval between every two adjacent nozzles is gradually increased from the middle to the two sides, a plurality of nozzles are arranged on the arc-shaped spray head at intervals, and an electric valve is arranged on the conveying pipeline and connected with the control cabinet. The device comprises the conveying pipeline and the arc-shaped spray head, the radian of the arc-shaped spray head is consistent with that of the material outlet, a plurality of nozzles are arranged on the arc-shaped spray head at intervals, and the device is simple in structure, low in cost, convenient to manufacture and install and wide in application range; long-term monitoring of personnel is not needed, only pipeline sealing, nozzle blocking and working conditions of the control cabinet need to be checked regularly, and the labor input cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of cement raw material production, and specifically relates to a novel automatic and precise feeding device for polymer grinding aids. Background Art

[0002] At present, the production process of cement raw materials is to make raw materials into raw materials after they are mixed in a certain proportion and then ground to meet the requirements. However, the supply pressure of raw materials such as sandstone and limestone is extremely high. In order to overcome the supply difficulties and strengthen cost control, the industry generally chooses diversified material supply. However, the introduction of polysilicon, wear-resistant waste slag and other elements leads to prominent problems such as difficult grinding and over-grinding in vertical mills, resulting in a decrease in the grinding time of vertical mills and the ease of burning of rotary kiln clinker, resulting in an increase in electricity consumption and coal consumption, as well as an increase in the cost of spare parts such as wear-resistant parts.

[0003] In order to solve the above problems, it is necessary to add raw material grinding aids during the vertical mill to improve the grindability of the raw materials. The reasonable use of grinding aids affects the final raw material output. However, there are several problems in the actual use process, such as: 1. The spraying of grinding aids cannot be started and stopped automatically, and manual control is required; 2. The spraying amount of grinding aids cannot be accurately controlled, and a good grinding effect cannot be achieved; 3. The flow waste problem occurs during the spraying process, which increases the procurement cost, etc. Therefore, it is necessary to design a device that can automatically and accurately control the spraying of grinding aids to control the spraying amount of grinding aids. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a novel automatic and precise feeding device for polymer grinding aids, which realizes automatic feeding without the need for long-term monitoring by personnel and ensures the normal and continuous operation of raw material grinding.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a new type of automatic and precise feeding device for polymer grinding aids, including a conveying pipeline and an arc-shaped nozzle, the middle part of the arc-shaped nozzle is connected to the end of the conveying pipeline, the nozzles on the arc-shaped nozzle are symmetrically arranged, and the interval between adjacent nozzles gradually increases from the middle to both sides, a plurality of nozzles are arranged at intervals on the arc-shaped nozzle, and an electric valve is arranged on the conveying pipeline, and the electric valve is connected to the control cabinet.

[0006] Preferably, the arc-shaped nozzle is provided with 7 nozzles, one nozzle is provided in the middle of the arc-shaped nozzle, and the other nozzles are symmetrically arranged on both sides of the middle nozzle, and the intervals between adjacent nozzles from the middle to both sides are 150mm, 200mm, and 250mm respectively.

[0007] Preferably, the nozzle aperture in the middle portion of the arc-shaped nozzle is larger than the nozzle aperture in the outer portion.

[0008] Preferably, the arc-shaped nozzle is provided with 7 nozzles, one nozzle is provided in the middle of the arc-shaped nozzle, and the other nozzles are symmetrically provided on both sides of the middle nozzle, the aperture of the middle 3 nozzles is 5 mm, and the aperture of the outer 4 nozzles is 4 mm.

[0009] Preferably, the nozzles are all arranged toward the center of the arc-shaped spray head.

[0010] Preferably, the nozzles are all threadedly connected to the arc-shaped spray head.

[0011] Preferably, an electronic flow meter is provided on the delivery pipeline, and the electronic flow meter is arranged on a side of the electric valve close to the arc-shaped nozzle, and the electronic flow meter is also connected to the control cabinet.

[0012] Preferably, the length of the arc-shaped nozzle is 0.4m~0.8m, and the curvature of the arc-shaped nozzle is 33°~55°.

[0013] Preferably, the aperture of the nozzle is 3 mm to 10 mm.

[0014] Preferably, the control cabinet is also connected to a raw material grinding system and an online analyzer.

[0015] Compared with the prior art, the above technical solution has the following beneficial effects:

[0016] 1. The utility model includes a conveying pipeline and an arc-shaped nozzle. The curvature of the arc-shaped nozzle is consistent with the material discharge port. A plurality of nozzles are arranged at intervals on the arc-shaped nozzle. The device has a simple structure, low cost, convenient manufacturing and installation, and a wide range of applications. It does not require long-term monitoring by personnel, and only requires regular inspection of the pipeline seal, nozzle blockage, and the working condition of the control cabinet, and the labor input cost is low.

[0017] 2. The nozzles on the arc-shaped nozzle are arranged symmetrically. The intervals between adjacent nozzles gradually increase from the middle to the sides, and the aperture of the nozzles decreases from the middle to the sides, which helps to spray more grinding aids on the thick material in the middle and reduce the amount of grinding aids sprayed on the sides, ensuring that the grinding aids are evenly sprayed on the material surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Among them: 1. arc nozzle 2. electronic flow meter 3. electric valve 4. main pipeline 5. control cabinet 6. connecting pipeline 7. nozzle. DETAILED DESCRIPTION

[0020] Figure 1 It is the best embodiment of the utility model, and the following Figure 1 The utility model is further described.

[0021] like Figure 1 As shown, a novel automatic precision feeding device for polymer grinding aid of the utility model comprises a conveying pipeline and an arc-shaped nozzle 1, the curvature of the arc-shaped nozzle 1 is consistent with the material discharge port, the middle part of the arc-shaped nozzle 1 is connected to the end of the conveying pipeline, the conveying pipeline conveys the grinding aid to the arc-shaped nozzle 1, a plurality of nozzles 7 are arranged at intervals on the arc-shaped nozzle 1, and the grinding aid is finally sprayed out from each nozzle 7, the nozzles 7 on the arc-shaped nozzle 1 are arranged symmetrically, and the intervals between adjacent nozzles 7 gradually increase from the middle to both sides, so that such an arrangement is conducive to spraying more grinding aid to the thick material in the middle, reducing the amount of grinding aid sprayed on the side, and ensuring that the grinding aid is evenly sprayed on the material surface, an electric valve 3 is arranged on the conveying pipeline, and the electric valve 3 is connected to the control cabinet 5, and the control cabinet 5 controls the opening and closing of the electric valve 3, thereby controlling the spraying of the grinding aid, and no long-term monitoring by personnel is required.

[0022] The arc-shaped nozzle 1 is fixedly welded on the conveying pipeline, which includes a main pipeline 4 and a connecting pipeline 6. The connecting pipeline 4 is arranged between the main pipeline 4 and the arc-shaped nozzle 1. The grinding aid enters the device from the top of the main pipeline 4. The nozzles 7 are all threadedly connected to the arc-shaped nozzle 1. The nozzles 7 are all arranged toward the center of the arc-shaped nozzle 1. The length of the arc-shaped nozzle 1 is 0.4m~0.8m, and the curvature of the arc-shaped nozzle 1 is 33°~55°. The length and curvature of the arc-shaped nozzle 1 can be replaced according to actual usage.

[0023] The aperture of the nozzle 7 in the middle of the arc-shaped nozzle 1 is larger than the aperture of the nozzle 7 on the outside, and the aperture of the nozzle 7 is 3mm~10mm. In this embodiment, 7 nozzles 7 are arranged on the arc-shaped nozzle, one nozzle 7 is arranged in the middle of the arc-shaped nozzle 1, and the other nozzles 7 are symmetrically arranged on both sides of the middle nozzle 7. The intervals between adjacent nozzles 7 from the middle to the sides are 150mm, 200mm, and 250mm respectively. The aperture of the three middle nozzles 7 is 5mm, and the aperture of the four outer nozzles 7 is 4mm. Such an arrangement is conducive to spraying more grinding aids to the thick material in the middle, reducing the amount of grinding aids sprayed on the sides, and ensuring that the grinding aids are evenly sprayed on the material surface.

[0024] An electronic flow meter 2 is arranged on the conveying pipeline. The electronic flow meter 2 is arranged on the side of the electric valve 3 close to the arc nozzle 1. The signal line and power line of the electronic flow meter 2 are connected to the control cabinet 5. At the same time, the control cabinet 5 is also connected to the raw material grinding system and the online analyzer. The control cabinet 5 adjusts the opening of the electric valve 3 through the flow data fed back by the electronic flow meter 2 to complete the automatic and accurate feeding of the polymer grinding aid.

[0025] When the utility model is in use, the device is installed on the pipeline for feeding polymer grinding aid, the grinding aid flows from the main pipeline 4 to the electric valve 3, the electric valve 3 is opened, the grinding aid flows to the electronic flow meter 2 through the connecting pipeline 6, the electronic flow meter 2 records the flow of the grinding aid, during the spraying period, the data of the electronic flow meter 2 is transmitted to the control cabinet 5, the control cabinet 5 is connected to the raw material grinding system and the online analyzer, the data is fed back to the control cabinet 5 after data processing, the control cabinet 5 outputs instructions to the electric valve 3 to control its opening, so as to complete the quantitative flow of the grinding aid, and then recorded by the electronic flow meter 2, and then connected to the arc nozzle 1 through the pipeline 6, and finally sprayed evenly from the nozzle 7 to the surface of the material to form a closed-loop control. The utility model has the advantages of simple structure, low cost, convenient manufacturing and installation, and wide application range. It does not require long-term monitoring by personnel, and only requires regular inspection of pipeline sealing, nozzle 7 blockage and working condition of control cabinet 5, and low labor input cost. The nozzles 7 on the arc-shaped nozzle 1 are symmetrically arranged, and the interval between adjacent nozzles 7 gradually increases from the middle to both sides, and the aperture of the nozzle 7 decreases from the middle to both sides, which helps to spray more grinding aids to the thick material in the middle, reduce the amount of grinding aids sprayed on the sides, and ensure that the grinding aids are evenly sprayed on the material surface.

[0026] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A new type of automatic and precise feeding device for polymer grinding aids, characterized by: The invention comprises a conveying pipeline and an arc-shaped spray head (1), wherein the middle part of the arc-shaped spray head (1) is connected to the end of the conveying pipeline, a plurality of nozzles (7) are arranged at intervals on the arc-shaped spray head (1), the nozzles (7) on the arc-shaped spray head (1) are arranged symmetrically, and the intervals between adjacent nozzles (7) gradually increase from the middle part to both sides, and an electric valve (3) is arranged on the conveying pipeline, and the electric valve (3) is connected to a control cabinet (5).

2. A novel automatic and precise feeding device for polymer grinding aid according to claim 1, characterized in that: The aperture of the nozzle (7) in the upper middle portion of the arc-shaped spray head (1) is larger than the aperture of the nozzle (7) at the outer side.

3. A novel automatic and precise feeding device for polymer grinding aid according to claim 1, characterized in that: The nozzles (7) are all arranged toward the center of the arc-shaped spray head (1).

4. A novel automatic and precise feeding device for polymer grinding aid according to claim 1, characterized in that: The nozzles (7) are all threadedly connected to the arc-shaped spray head (1).

5. A novel automatic and precise feeding device for polymer grinding aid according to claim 1, characterized in that: An electronic flow meter (2) is arranged on the delivery pipeline. The electronic flow meter (2) is arranged on a side of the electric valve (3) close to the arc-shaped spray head (1). The electronic flow meter (2) is also connected to the control cabinet (5).

6. A novel automatic and precise feeding device for polymer grinding aid according to claim 1, characterized in that: The length of the arc-shaped nozzle (1) is 0.4 m to 0.8 m, and the curvature of the arc-shaped nozzle (1) is 33° to 55°.

7. A novel automatic and precise feeding device for polymer grinding aid according to claim 1, characterized in that: The aperture of the nozzle (7) is 3 mm to 10 mm.

8. A novel automatic and precise feeding device for polymer grinding aid according to claim 1, characterized in that: The control cabinet (5) is also connected to a raw material grinding system and an online analyzer.

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