Online section cleaning device for cement grinding

Abstract

The utility model discloses an online section cleaning device for cement grinding, relates to the technical field of cement production, and aims to solve the technical problem that some cement enters a collecting box and is mixed with metal impurities such as broken sections during section cleaning of current equipment, so that the subsequent cleaning difficulty is increased. Comprising a collecting box installed at the lower end of the middle of an air chute and an air curtain mechanism arranged in the collecting box, a discharging plate is installed in an inlet part, the air curtain mechanism comprises an air box and an air curtain pipe, an air inlet is formed in the front end of the air box, a motor is arranged in the air box, and fan blades are installed at the tail end of a main shaft of the motor. And an air pipe connected with the air curtain pipe is arranged on the air box. The cement powder collecting device has the advantages that broken segments and other metal powder impurities enter the collecting box due to gravity, cement powder can be more effectively blocked and can be guided to return to the air chute, mixing of cement and the broken segments and other metal impurities is reduced, and follow-up cleaning difficulty is lowered.

Description

Technical Field

[0001] This utility model relates to the field of cement production technology, and more specifically, to an online cleaning device for cement grinding. Background Technology

[0002] Cement grinding is achieved by impacting and grinding materials with grinding media (steel balls, steel segments, etc.) inside the mill. During this process, the grinding media constantly collide and rub against the materials and against each other. After prolonged use, the surface of the grinding media gradually wears down and cracks, forming metallic impurities. These broken-off metallic impurities are called fragments. These fragments are transported to the cement silo via the cement conveying chute, thus mixing into the cement product, affecting its quality and performance, and potentially causing malfunctions in subsequent equipment. Therefore, it is necessary to separate them using equipment such as an online fragment removal device in cement grinding.

[0003] Currently, online cleaning devices for cement grinding mainly involve installing a connected collection box at the lower end of the cement air conveying chute. During cement conveying, metallic impurities fall into the collection box due to their weight as they pass through the connection between the collection box and the chute. However, some cement also enters the collection box during this process, mixing with metal fragments and other impurities, increasing the difficulty of subsequent cleaning. Therefore, we propose an online cleaning device for cement grinding. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide an online cement grinding section cleaning device to solve the technical problem that some cement still enters the collection box during the current equipment section cleaning process, mixing with metal impurities such as broken pieces, which increases the difficulty of subsequent cleaning.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an online cleaning device for cement grinding, comprising a collection box installed at the lower end of the middle of an air chute and an air curtain mechanism disposed within the collection box. The collection box is connected to the air chute. The collection box includes an inlet and a collection section. A discharge pipe is provided at the lower end of the collection section. A valve is provided on the discharge pipe. A discharge plate is installed inside the inlet. The air curtain mechanism includes a bellows and an air curtain pipe. An installation section is provided in the recessed inner wall of the inlet. The air curtain pipe is located inside the installation section. An air inlet is provided at the front end of the bellows. A motor is disposed inside the bellows. A fan blade is installed at the end of the main shaft of the motor. A duct connected to the air curtain pipe is disposed on the bellows.

[0006] Preferably, the upper end of the collection box is symmetrically provided with mounting plates, the mounting plates are attached to the outer surface of the air chute, and the mounting plates are connected to the air chute by bolts.

[0007] Preferably, the feeding plate includes, from top to bottom, an impurity discharge section, a guide section, a first redirecting section, a second redirecting section, and a feeding section. The impurity discharge section is inclined downward along its long axis. The guide section is located at the upper end of the impurity discharge section and is curved upward in an arc shape. The end of the guide section is flush with the opening at the upper end of the collection box.

[0008] Preferably, the impurity discharge section is provided with a first discharge port and a second discharge port, the first discharge port being located below the guide section and the second discharge port being located at the tail of the impurity discharge section.

[0009] Preferably, the first redirecting part is arc-shaped and disposed at the lower end of the impurity discharge part, the second redirecting part is bent downward at 45 degrees and disposed at the end of the first redirecting part, the discharge part is bent downward at 45 degrees and disposed at the end of the second redirecting part, and both the end of the first redirecting part and the end of the second redirecting part are provided with discharge ports.

[0010] Preferably, the front part of the air curtain pipe is a rectangular pipe structure, and the rear part of the air curtain pipe is provided with an air outlet facing the guide section. The air outlet is arranged in several bends from left to right, and the shape of the air outlet is wavy.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model, through the design of an air curtain pipe structure, establishes an air curtain mechanism within the collection box. The airflow from the air curtain pipe forms an air curtain between the pipe and the guide section, effectively blocking cement powder entering the guide section and blowing it back into the air chute. Furthermore, the wave-shaped outlet design ensures more uniform airflow, increasing the air curtain's coverage and further effectively blocking cement powder. This better guides the cement powder back into the air chute, further enhancing the device's ability to separate cement powder from metal impurities. Metal impurities can then smoothly fall into the collection section, achieving highly efficient separation of cement powder and metal impurities. This reduces the mixing of cement with fragments and other metal impurities, lowering the difficulty of subsequent cleaning. It solves the problem that some cement still enters the collection box during the current equipment's cleaning process, mixing with fragments and other metal impurities, thus increasing the difficulty of subsequent cleaning.

[0013] 2. This utility model also features a uniquely designed feeding plate structure. The first and second redirecting parts, in conjunction with the first and second discharge ports, allow the feeding opening to change direction multiple times, creating multiple small spaces. This increases resistance to airflow, making it less likely for the airflow to flow downwards and more inclined to continue along the original direction of the chute. This maintains the stability of the airflow within the air chute, reduces the possibility of airflow entering the collection box, and helps improve the stability of the entire conveying system. The impurity dropping section and guide section of the feeding plate can guide fragmented metal impurities to slide downwards. Furthermore, the downward-curving arc of the guide section can work with the air curtain mechanism to allow some cement powder entering the guide section to return to the air chute, further ensuring the separation of cement powder and metal impurities. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the collection device of this utility model;

[0017] Figure 4 This is a schematic diagram of the air curtain tube structure of this utility model;

[0018] Figure 5 This is a cross-sectional view of the inlet section of this utility model.

[0019] Figure 6 This is a schematic diagram of the material feeding plate structure of this utility model.

[0020] Explanation of the numbers in the diagram: 101, Collection box; 1011, Inlet; 1012, Collection section; 1013, Installation section; 102, Mounting plate; 103, Discharge pipe; 104, Air chute; 105, Discharge plate; 1051, Impurity discharge section; 1052, Guide section; 1053, First redirection section; 1054, Second redirection section; 1055, Discharge section; 1056, First discharge port; 1057, Second discharge port; 1058, Discharge port; 200, Air curtain mechanism; 201, Air box; 202, Air curtain pipe; 2021, Air outlet; 203, Motor; 204, Fan blade; 205, Air inlet; 206, Air duct. Detailed Implementation

[0021] like Figures 1 to 6As shown, this utility model relates to an online cleaning device for cement grinding, including a collection box 101 installed at the lower end of the middle part of an air chute 104 and an air curtain mechanism 200 disposed within the collection box 101. The collection box 101 is connected to the air chute 104. The collection box 101 includes an inlet 1011 and a collection part 1012. A discharge pipe 103 is provided at the lower end of the collection part 1012, and a valve is provided on the discharge pipe 103. An air curtain mechanism 200 is installed inside the inlet 1011. Equipped with a feed plate 105, the air curtain mechanism 200 includes an air box 201 and an air curtain pipe 202. The inner wall of the inlet 1011 is recessed and has a mounting part 1013. The air curtain pipe 202 is located within the mounting part 1013. An air inlet 205 is opened at the front end of the air box 201. A motor 203 is installed inside the air box 201, and a fan blade 204 is installed at the end of the motor 203's main shaft. An air duct 206 connected to the air curtain pipe 202 is installed on the air box 201. This invention sets up an air curtain between the inclined chute and the collection box 101, allowing metal powder impurities such as fragments to enter the collection box 101 by gravity while more effectively blocking cement powder. This guides the cement powder back into the air inclined chute 104, reducing the mixing of cement with metal impurities such as fragments and lowering the difficulty of subsequent cleaning.

[0022] Specifically, mounting plates 102 are symmetrically arranged on the upper end of the collection box 101. The mounting plates 102 are attached to the outer surface of the air chute 104 and are connected to the air chute 104 by bolts. The mounting plates 102 are used for the installation of the collection box 101.

[0023] Furthermore, the feeding plate 105 includes, from top to bottom, an impurity discharge section 1051, a guide section 1052, a first redirection section 1053, a second redirection section 1054, and a feeding section 1055. The impurity discharge section 1051 is inclined downward along its long axis. The guide section 1052 is located at the upper end of the impurity discharge section 1051. The guide section 1052 is curved upward in an arc shape, and the end of the guide section 1052 is flush with the opening at the upper end of the collection box 101. The inlets of the air chute 104 and the collection box 101 are inclined, allowing ferrous materials to slide smoothly into the inclined surface under gravity. Air and cement powder, due to the relatively smaller gravitational pull, tend to continue moving along the original direction of the chute, reducing the likelihood of them entering the settling chamber. Metal impurities at the bottom of the air chute 104 fall directly onto the impurity discharge section 1051 and slide down to the first discharge port 1056. Additionally, some metal impurities carried in the air fall onto the guide section 1052 due to gravity and slide down to the second discharge port 1057.

[0024] It is worth noting that the impurity discharge section 1051 is provided with a first discharge port 1056 and a second discharge port 1057. The first discharge port 1056 is located below the guide section 1052, and the second discharge port 1057 is located at the tail end of the impurity discharge section 1051. The arrangement of the first discharge port 1056 and the second discharge port 1057 allows the metal impurities located on the impurity discharge section 1051 and the guide section 1052 to slide downwards and fall off.

[0025] It is worth noting that the first deflector 1053 is arc-shaped and located at the lower end of the impurity discharge section 1051. The second deflector 1054 is bent downwards at a 45-degree angle and located at the end of the first deflector 1053. The discharge section 1055 is bent downwards at a 45-degree angle and located at the end of the second deflector 1054. Both the ends of the first deflector 1053 and the second deflector 1054 are provided with discharge ports 1058. The first deflector 1053 and the second deflector 1054, together with the first discharge port 1056 and the second discharge port 1057, can change the direction of the discharge opening multiple times, making it difficult for the airflow to flow downwards and maintaining the stability of the airflow in the air chute 104. Secondly, it can change the size of the space in the inlet section 1011, forming multiple small spaces, increasing the resistance to airflow, and further making the airflow more inclined to continue along the original direction of the chute, reducing the possibility of entering the collection box 101.

[0026] It is worth noting that the front of the air curtain pipe 202 is a rectangular pipe structure, and the rear of the air curtain pipe 202 is provided with an air outlet 2021. The air outlet 2021 faces the guide section 1052 and is arranged with several bends from left to right, and the shape of the air outlet 2021 is wavy. Some metal impurities carried in the air will fall onto the guide section 1052 due to gravity. Some cement may also enter the guide section 1052. The motor 203 can blow air, and the air force only needs to be strong enough to blow away the cement powder. For example, cement is conveyed by a cement conveying chute. The air force is delivered to the air curtain pipe 202 through the air duct 206, and then blown from the air outlet 2021 of the air curtain pipe 202 to the guide section 1052, so that an air curtain is formed between the air curtain pipe 202 and the guide section 1052, and the cement that enters... The powder is blown by the air curtain guide section 1052. Because the guide section 1052 is an upward curved arc, the cement powder blown by the air curtain can return to the air chute 104. Furthermore, because the air outlet 2021 is wavy, this special shape design can make the blown airflow more uniform and increase the coverage of the air curtain, more effectively blocking the cement powder and guiding the cement powder back to the air chute 104. This improves the device's ability to separate cement powder and metal impurities and effectively prevents fragmented metal impurities from entering the collection box 101.

[0027] Working principle: This embodiment provides an online cement grinding and cleaning device. During use, the ground cement enters the air chute 104 for conveying. Due to the inclined arrangement of the air chute 104 and the inlet of the collection box 101, iron impurities such as broken pieces slide smoothly from the air chute 104 onto the impurity discharge section 1051 of the discharge plate 105 inside the inlet 1011 of the collection box 101 under the influence of gravity. The impurities then slide down the inclined impurity discharge section 1051 to the first discharge port 1056, and are subsequently discharged through the first... The cement powder continuously slides down from the guide section 1053 into the collection section 1012. Air and cement powder, due to their lower gravity, tend to continue moving along the original direction of the inclined chute. Additionally, some metallic impurities carried in the air fall onto the guide section 1052 due to gravity, slide down to the second discharge port 1057, and then change direction through the discharge port 1058 at the end of the second redirecting section 1054, also falling into the collection section 1012. During this process, a small amount of cement may enter the guide section 1052. At this point, the motor is started. 203. Motor 203 drives fan blade 204 to rotate, drawing air into the air box 201 through air inlet 205. The air is then transported through duct 206 to air curtain pipe 202. The wave-shaped air outlet 2021 at the rear of air curtain pipe 202 blows air into guide section 1052, forming an air curtain between air curtain pipe 202 and guide section 1052. This air curtain blows the incoming cement powder into guide section 1052. Due to the upward-curving arc structure of guide section 1052, the blown cement powder returns to the air. The material continues to be conveyed in the air chute 104. When the metal impurities accumulate to a certain extent in the collection section 1012, the valve on the discharge pipe 103 is opened to discharge the impurities and complete the cleaning process. Throughout the process, the discharge plate 105 increases the resistance to airflow and reduces the amount of airflow entering the collection box 101 by repeatedly changing the direction of the discharge opening and the size of the space inside the inlet section 1011. The air curtain mechanism 200 effectively blocks cement powder from entering the collection box 101, thus achieving efficient separation of cement powder and metal impurities.

[0028] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. An online section cleaning device for cement grinding, characterized in that, The system includes a collection box (101) installed at the lower end of the middle section of an air chute (104) and an air curtain mechanism (200) disposed within the collection box (101). The collection box (101) is connected to the air chute (104). The collection box (101) includes an inlet (1011) and a collection section (1012). A discharge pipe (103) is provided at the lower end of the collection section (1012), and a valve is provided on the discharge pipe (103). A discharge plate (105) is installed inside the inlet (1011). The air curtain mechanism ( 200) includes a bellows (201) and an air curtain pipe (202) installed. The inner wall of the inlet (1011) is recessed and has an installation part (1013). The air curtain pipe (202) is located in the installation part (1013). The bellows (201) has an air inlet (205) at the front end. The bellows (201) has a motor (203) installed inside. The main shaft of the motor (203) has a fan blade (204) installed at the end. The bellows (201) has a duct (206) connected to the air curtain pipe (202).

2. The online cleaning device for cement grinding according to claim 1, characterized in that, The collection box (101) is symmetrically provided with mounting plates (102) on its upper end. The mounting plates (102) are attached to the outer surface of the air chute (104) and are connected to the air chute (104) by bolts.

3. The online cleaning device for cement grinding according to claim 2, characterized in that, The feeding plate (105) includes, from top to bottom, an impurity discharge section (1051), a guide section (1052), a first redirection section (1053), a second redirection section (1054), and a feeding section (1055). The impurity discharge section (1051) is inclined downward along its long axis. The guide section (1052) is located at the upper end of the impurity discharge section (1051). The guide section (1052) is curved upward in an arc shape. The end of the guide section (1052) is flush with the opening at the upper end of the collection box (101).

4. The online cleaning device for cement grinding according to claim 3, characterized in that, The impurity discharge section (1051) is provided with a first discharge port (1056) and a second discharge port (1057). The first discharge port (1056) is located below the guide section (1052), and the second discharge port (1057) is located at the tail of the impurity discharge section (1051).

5. The online cleaning device for cement grinding according to claim 4, characterized in that, The first redirecting part (1053) is arc-shaped and located at the lower end of the impurity discharge part (1051). The second redirecting part (1054) is bent downward at a 45-degree angle and located at the end of the first redirecting part (1053). The discharge part (1055) is bent downward at a 45-degree angle and located at the end of the second redirecting part (1054). Both the end of the first redirecting part (1053) and the end of the second redirecting part (1054) are provided with discharge ports (1058).

6. The online cleaning device for cement grinding according to claim 5, characterized in that, The front part of the air curtain pipe (202) is a rectangular pipe structure, and the rear part of the air curtain pipe (202) is provided with an air outlet (2021). The air outlet (2021) faces the flow guide (1052), and the air outlet (2021) is arranged in several bends from left to right. The shape of the air outlet (2021) is wavy.

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