Fine water spraying device of ceramic dry-method powder preparation wetting tower

Abstract

The utility model relates to the technical field of building sanitary ceramic dry-method powdering, and discloses a fine water spraying device of a ceramic dry-method powdering wetting tower, which comprises a ceramic dry-method powdering wetting tower body and a fine water spraying system. And a material discharged from a lower conical opening at the bottom of the ceramic dry-method powder preparation wetting tower body enters a granulation disc. According to the utility model, the high-pressure water spray nozzle is adopted to replace a replacement water spray nozzle, so that water drops are finer, and the water drops are easily wetted with powder particles by correspondingly increasing the number of the water drops. And meanwhile, through uniform distribution on the same cross section or conical surface of the cylinder body, the phenomenon that the water quantity in a region is too large and concentrated is avoided, and the long-term puzzle problem that mud pies are generated in a wetting granulation link in a ceramic dry-method powder preparation process technology is well solved. And the water content of the powder is automatically controlled on line through the fine water spraying system, so that the water content of the powder is stable, and stable production of subsequent procedures is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of dry powder making for building sanitary ceramics, in particular to a fine water spray device for a wetting tower in ceramic dry powder making. Background Technique

[0002] The dry powder making process for building ceramics is an energy-saving technology strongly promoted by the state. Different from the traditional wet powder making, ceramic dry powder making has broad prospects for energy conservation, consumption reduction, emission reduction and efficiency improvement. Over the years, the ceramic industry has been constantly improving and optimizing the dry powder making process technology. Among them, the problems in the granulation link are relatively significant. In the existing granulation technology, whether it is central water spray atomization or the improved multi-point water spray atomization, due to the relatively large water atomization particles and the concentrated water spray area, it is very easy to form over-wet powder particles and mud masses. And in the later-formed green bodies, the mud masses cannot drain water sufficiently during the drying process to reach the same moisture content as other parts of the green bodies, resulting in bursting during the firing process, forming fingertip cracks on the surface of the brick blanks, causing serious quality problems of the products, and becoming a difficult technical problem to solve in the ceramic dry powder making process technology. Therefore, it has become an urgent task to find measures and methods for uniformly wetting fine dry powder particles in the granulation link of ceramic dry powder making.

[0003] The existing wetting towers and granulator water spray devices for ceramic dry powder making all use water atomization nozzles, and the diameter of the sprayed water droplets is relatively large. At the same time, the single central water spray nozzle group uses a crystal ball type longitudinal and transverse combined nozzle for spraying, which is very prone to uneven water spraying, resulting in over-wetting and forming mud masses. The multi-point water spray layout can improve the uneven water mist phenomenon in the cross-section of the cylinder, but it does not completely solve the powder mud masses caused by the secondary uneven water mist. Therefore, we provide a fine water spray device for a wetting tower in ceramic dry powder making. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fine water spray device for a wetting tower in ceramic dry powder making to solve the problems put forward in the above background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: a fine water spray device for a ceramic dry powder making wetting tower, comprising a ceramic dry powder making wetting tower body and a fine water spray system. An inlet is provided at the top of the ceramic dry powder making wetting tower body, and the bottom lower cone of the ceramic dry powder making wetting tower body is an outlet. The fine water spray system includes a fine water spray assembly, a high-pressure water supply pump inlet pipe, a filter, an atomization host - PLC control cabinet, a flow meter, and a powder humidity detection probe. The filter, the flow meter, and the powder humidity detection probe are all electrically connected to the atomization host - PLC control cabinet. The fine water spray assembly is arranged inside the ceramic dry powder making wetting tower body. One end of the high-pressure water supply pump inlet pipe is connected to a high-pressure water supply pump station, and the high-pressure water supply pump station supplies atomized water after super impurity removal and filtration to the fine water spray assembly. The other end of the high-pressure water supply pump inlet pipe is sequentially connected to the filter, the atomization host - PLC control cabinet, and is connected to the fine water spray assembly arranged inside the ceramic dry powder making wetting tower body through a flow meter.

[0006] Preferably, the fine water spray assembly is composed of a longitudinal main water spray pipe, a transverse main water spray pipe, an annular water distribution spray pipe, and fine water spray nozzles.

[0007] Preferably, the longitudinal main water spray pipe and the transverse main water spray pipe form a cross-shaped main water spray pipe through a connecting piece, and the cross-shaped main water spray pipe is fixedly arranged inside the ceramic dry powder making wetting tower body.

[0008] Preferably, the annular water distribution spray pipe is made into a / circle combination and connected to the cross-shaped main water spray pipe, and multiple layers of water distribution pipes are arranged from the outside to the inside on the same plane. The distance between the water distribution pipes is set at about 100 mm to 300 mm, and the distance between adjacent water distribution pipes inside the ceramic dry powder making wetting tower body is set at half of the distance between the water distribution pipes.

[0009] Preferably, a fine water spray nozzle is installed on each water distribution pipe of the annular water distribution spray pipe, and the installation distance of the fine water spray nozzles is the same as the distance between the water distribution pipes, and a fine water spray nozzle is also installed at the intersection of the cross-shaped main water spray pipes.

[0010] Preferably, the fine water spray assembly further includes a central main water pipe. The central main water pipe is fan-shapedly distributed with branch water pipes towards the periphery of the tower body. The ends of the branch water pipes are inclined downward, and the ends of the branch water pipes are welded to the cylinder wall. Spray nozzles are evenly distributed at equal intervals on the branch water pipes. The spray nozzles are distributed at intervals of 45° to the left and right along the gravity line in the left and right directions. The welding of the left and right spray nozzles shall not occupy the position of the gravity line. A water receiving and guiding pipe is installed at the lower end of the welding position of the branch water pipe on the wetting tower cylinder wall. The inner wall of the water receiving and guiding pipe is a semi-cylindrical pipe, and the outer wall of the cylinder wall is a cylindrical pipe.

[0011] The utility model provides a fine water spray device for a ceramic dry powder making wetting tower, which has the following beneficial effects:

[0012] (1) By setting up a fine water spray system in the utility model, which includes a fine water spray component, a high-pressure water supply pump inlet pipe, a filter, an atomization main machine - PLC control cabinet, a flow meter, and a powder humidity detection probe. The high-pressure water supply pump station supplies atomized water after super impurity removal and filtration to the fine water spray component. The powder process moisture is set by the atomization main machine - PLC control cabinet, and the moisture range is 6% - 11%. After the specific process parameters of the moisture are determined, the water supply volume is adjusted by frequency conversion and voltage regulation to ensure the powder moisture. When using the powder humidity detection probe, the moisture of the powder can be monitored, and the error range is set within 0.3%. The powder humidity detection probe can timely measure the moisture of the powder produced by the wetting tower granulator and transmit it to the atomization main machine - PLC control cabinet in time. The water pressure is adjusted by motor frequency conversion to ensure the automatic adjustment of the powder water volume and moisture.

[0013] (2) By using a high-pressure fine water spray nozzle to replace the replacement water mist nozzle in the utility model, the water droplets are finer, and the number of water droplets is correspondingly increased, which is easy to wet the powder particles. At the same time, through the uniform distribution of a single one on the same cross-section or conical surface of the cylinder, the phenomenon of excessive water volume concentration in the area is avoided, and the long-term puzzling problem of mud mass generation in the wetting granulation link of the ceramic dry powder making process technology is well solved. The stable powder moisture is designed by the online automatic control of the fine water spray system, which is very beneficial to the stable production of subsequent processes. Description of the Drawings

[0014] Figure 1 It is a structural diagram of a fine water spray device for a ceramic dry powder making wetting tower of the utility model;

[0015] Figure 2 It is a schematic structural diagram of the fine water spray component of the utility model;

[0016] Figure 3 It is a schematic structural diagram of the central main water pipe of the utility model;

[0017] Figure 4 It is a schematic structural diagram of the branch water pipe of the utility model.

[0018] In the figure: 1 ceramic dry powder making wetting tower body, 21 feeding port, 22 discharging port, 3 fine water spray component, 31 longitudinal main water spray pipe, 32 transverse main water spray pipe, 33 annular water distribution spray pipe, 34 fine water spray nozzle, 35 central main water pipe, 36 branch water pipe, 4 high-pressure water supply pump inlet pipe, 5 filter, 6 atomization main machine - PLC control cabinet, 7 flow meter, 8 powder humidity detection probe. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0021] Embodiment 1

[0022] A preferred embodiment of a fine water spray device for a ceramic dry powder preparation wetting tower provided by the present invention is as Figure 1-2 shown: A fine water spray device for a ceramic dry powder preparation wetting tower includes a ceramic dry powder preparation wetting tower body 1 and a fine water spray system. An inlet 21 is provided at the top of the ceramic dry powder preparation wetting tower body 1, and the bottom cone of the ceramic dry powder preparation wetting tower body 1 is an outlet 22. The fine water spray system includes a fine water spray assembly 3, a high-pressure water supply pump inlet pipe 4, a filter 5, an atomization host - PLC control cabinet 6, a flow meter 7, and a powder humidity detection probe 8. The filter 5, the flow meter 7, and the powder humidity detection probe 8 are all electrically connected to the atomization host - PLC control cabinet 6. The fine water spray assembly 3 is arranged inside the ceramic dry powder preparation wetting tower body 1. One end of the high-pressure water supply pump inlet pipe 4 is connected to a high-pressure water supply pumping station, and the high-pressure water supply pumping station supplies atomized water after super impurity removal and filtration to the fine water spray assembly 3. The other end of the high-pressure water supply pump inlet pipe 4 is sequentially connected to the filter 5, the atomization host - PLC control cabinet 6, and is connected to the fine water spray assembly 3 provided inside the ceramic dry powder preparation wetting tower body 1 through the flow meter 7.

[0023] In this embodiment, by setting up a fine water spray system, which includes a fine water spray assembly 3, a high-pressure water supply pump inlet pipe 4, a filter 5, an atomization host-PLC control cabinet 6, a flow meter 7, and a powder humidity detection probe 8. The high-pressure water supply pump station supplies atomized water after super impurity removal and filtration to the fine water spray assembly 3. The atomization host-PLC control cabinet 6 sets the process moisture content of the powder, and the moisture range is 6% - 11%. After the specific process parameters of the moisture are determined, the water supply volume is adjusted by frequency conversion and voltage regulation to ensure the powder moisture. When using the powder humidity detection probe 8, the moisture of the powder can be monitored, and the error range is set within 0.3%. The powder humidity detection probe 8 timely measures the moisture of the powder produced by the wetting tower / granulator and transmits it to the atomization host-PLC control cabinet 6 in a timely manner. The water pressure is adjusted by motor frequency conversion to ensure the automatic adjustment of the powder water volume and moisture content.

[0024] Embodiment 2

[0025] Please refer to Figure 1 - Figure 2 , and on the basis of Embodiment 1, it is further obtained that the fine water spray assembly 3 is composed of a longitudinal main water spray pipe 31, a transverse main water spray pipe 32, an annular water distribution spray pipe 33, and fine water spray nozzles 34. The longitudinal main water spray pipe 31 and the transverse main water spray pipe 32 form a cross-shaped main water spray pipe through connectors. The cross-shaped main water spray pipe is fixedly arranged inside the ceramic dry powder preparation wetting tower body 1. The annular water distribution spray pipe 33 is made into a 1 / 4 circle and connected to the cross-shaped main water spray pipe. A multi-layer water distribution pipe is arranged from the outside to the inside on the same plane, and the distance between the water distribution pipes is set at about 100mm - 300mm. The distance between adjacent water distribution pipes inside the ceramic dry powder preparation wetting tower body 1 is set at half of the distance between the water distribution pipes. Each water distribution pipe on the annular water distribution spray pipe 33 is equipped with a fine water spray nozzle 34, and the installation spacing of the fine water spray nozzles 34 is the same as the distance between the water distribution pipes. A fine water spray nozzle 34 is also installed at the intersection of the cross-shaped main water spray pipes.

[0026] In this embodiment, the cross-shaped main water spray pipe, water distribution pipes, and connectors used in the fine water spray assembly 3 are all made of austenitic stainless steel, and the pipe diameter is selected according to the total water consumption. The fine water spray nozzles 34 are selected with an aperture of 0.5mm - 0.8mm, and the installation quantity of the fine water spray nozzles 34 is selected according to the total water consumption.

[0027] In this embodiment, the cross-shaped main water spray pipe, the longitudinal and transverse pipes, and the water distribution pipes are connected by pipe joints, which is convenient for installation and maintenance. By positioning the cross-shaped main water spray pipe on the inner circle of the wetting tower / granulator tower body, the annular water distribution spray pipe 33 is made into a 1 / 4 circle and connected to the cross-shaped main water spray pipe. A fine water spray nozzle 34 is installed on each water distribution pipe of the annular water distribution spray pipe 33, and the installation spacing of the fine water spray nozzles 34 is the same as the spacing of the water distribution pipes. A fine water spray nozzle 34 is also installed at the intersection of the cross-shaped main water spray pipes, so as to ensure the water mist on the cross section inside the wetting tower barrel.

[0028] Embodiment 3

[0029] Please refer to Figure 1 - Figure 4 , and on the basis of Embodiments 1 and 2, it is further obtained that the fine water spray assembly 3 further includes a central main water pipe 35. The central main water pipe 35 distributes branch water pipes 36 in a fan shape towards the periphery of the tower body. The ends of the branch water pipes 36 are inclined downward, and the ends of the branch water pipes 36 are welded to the barrel wall. Nozzles are evenly distributed at equal intervals on the branch water pipes 36. The nozzles are distributed at intervals of 45° to the left and right along the gravity line in the left and right directions. The welding of the left and right nozzles shall not occupy the position of the gravity line. A water receiving and guiding pipe is installed at the lower end of the welding position of the branch water pipes 36 on the wetting tower barrel wall. The inner wall of the water receiving and guiding pipe is a semi-cylindrical pipe, and the outer wall is a cylindrical pipe. This solution mainly solves the problem of the condensation water of the main and branch water pipes in the wetting tower being collected and guided out of the wetting tower. At the same time, the high density of the nozzles relative to the wetting tower can solve the wetting problem of a large amount of fine powder in the center.

[0030] Working principle: First, pour the powder into the feeding port 21 provided in the ceramic dry powder preparation wetting tower body 1. Through the processing of the powder, during the processing, water is transported to the water inlet pipe 4 of the high-pressure water supply pump by the high-pressure water supply pump station. The impurities in the water are filtered by the filter 5, atomized by the atomization main machine - PLC control cabinet 6, and the process moisture of the powder is set by the control cabinet. The moisture control range is 6% - 11%. After the specific process parameters of the moisture are determined, the water supply volume is adjusted by frequency conversion and voltage regulation to ensure the powder moisture. When the powder is processed to a certain extent, the powder humidity detection probe 8 can monitor the powder moisture in real time, and the error range is set within 0.3%. The powder humidity detection probe 8 timely measures the powder moisture produced by the wetting tower / granulator and transmits it to the atomization main machine - PLC control cabinet 6 in time. The water pressure is adjusted by motor frequency conversion to ensure the automatic adjustment of the powder water volume and moisture. Finally, the powder will be discharged from the discharge port 22.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fine water spray device for a ceramic dry powder making wetting tower, comprising a ceramic dry powder making wetting tower body (1) and a fine water spray system, characterized in that: The top of the ceramic dry powder wetting tower body (1) is provided with a feed inlet (21), and the bottom cone of the ceramic dry powder wetting tower body (1) is a discharge outlet (22). The fine water spray system includes a fine water spray assembly (3), a high-pressure water supply pump inlet pipe (4), a filter (5), an atomization main machine - PLC control cabinet (6), a flow meter (7), and a powder humidity detection probe (8). The filter (5), the flow meter (7), and the powder humidity detection probe (8) are all electrically connected to the atomization main machine - PLC control cabinet (6). The fine water spray assembly (3) is arranged inside the ceramic dry powder wetting tower body (1). One end of the high-pressure water supply pump inlet pipe (4) is connected to a high-pressure water supply pumping station, and the high-pressure water supply pumping station supplies atomized water after super impurity removal and filtration to the fine water spray assembly (3). The other end of the high-pressure water supply pump inlet pipe (4) is successively connected to the filter (5), the atomization main machine - PLC control cabinet (6), and is connected to the fine water spray assembly (3) arranged inside the ceramic dry powder wetting tower body (1) through the flow meter (7).

2. The fine water spray device for a ceramic dry powder preparation wetting tower according to claim 1, wherein: The fine water spray assembly (3) is composed of a longitudinal main water spray pipe (31), a transverse main water spray pipe (32), an annular water distribution spray pipe (33), and fine water spray nozzles (34).

3. The fine water spray device of the wetting tower for dry ceramic powder making according to claim 2, characterized in that: The longitudinal main water spray pipe (31) and the transverse main water spray pipe (32) form a cross-shaped main water spray pipe through a connector, and the cross-shaped main water spray pipe is fixedly arranged inside the ceramic dry powder wetting tower body (1).

4. A fine water spray device for a wetting tower in ceramic dry powder preparation according to claim 2, characterized in that: The annular water distribution spray pipe (33) is made into a 1 / 4 circle and connected to the cross-shaped main water spray pipe. A plurality of layers of water distribution pipes are arranged from the outside to the inside on the same plane, and the distance between the water distribution pipes is set at about 100 mm to 300 mm. The distance between adjacent water distribution pipes inside the ceramic dry powder wetting tower body (1) is set at half of the distance between the water distribution pipes.

5. The fine water spray device of a wetting tower for dry ceramic powder making according to claim 2, characterized in that: A fine water spray nozzle (34) is installed on each water distribution pipe of the annular water distribution spray pipe (33), and the installation distance of the fine water spray nozzles (34) is the same as the distance between the water distribution pipes. A fine water spray nozzle (34) is also installed at the intersection point of the cross-shaped main water spray pipes.

6. The fine water spray device of the wetting tower for dry ceramic powder making according to claim 1, wherein: The fine water spray assembly (3) further includes a central main water pipe (35). The central main water pipe (35) is fan-shapedly distributed with branch water pipes (36) towards the periphery of the tower body. The ends of the branch water pipes (36) are inclined downward. The ends of the branch water pipes (36) are welded to the cylinder wall. Nozzles are evenly distributed at equal intervals on the branch water pipes (36). The nozzles are distributed at intervals of 45° to the left and right along the gravity line. The left and right nozzles are welded without occupying the position of the gravity line. A water receiving and guiding pipe is installed at the lower end of the welding part of the branch water pipe (36) on the wetting tower cylinder wall. The inner part of the cylinder wall of the water receiving and guiding pipe is a semi-cylindrical pipe, and the outer part of the cylinder wall is a cylindrical pipe.

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