Suspension type air control structure

Abstract

The utility model discloses a suspension type air control structure which comprises a movable door hinged to a material opening of a flour mill, an air blocking valve is fixedly arranged on the movable door, and air channel holes which are in one-to-one correspondence are formed in the movable door and the air blocking valve. Air blocking plates are movably arranged at the positions, corresponding to the air channel holes, of the air blocking valve in a clamped mode, and a supporting frame used for preventing the air blocking plates from falling off is arranged outside the air blocking valve. The air blocking valve structure is convenient and fast to disassemble and assemble, a sealing structure of the movable door is adopted for sealing, a sealing rubber strip is not used any more, and therefore the conditions of rubber strip shrinkage and powder leakage are avoided. Besides, the movable door belongs to a normally-open device, and vibration during daily opening can enable dust on the air control structure to flow into an air suction pipe network along with an inner cavity, so that accumulated dust on the device is greatly reduced, the cleaning frequency is reduced, and the air control effect cannot be influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of wind control structures of grinding mills, in particular to a suspended wind control structure. Background Art

[0002] At present, during the installation process of the mill wind control structure, it is necessary to pre-assemble the aluminum alloy profile, wind blocking plate, sealing strip and support frame into a whole, and then install the structure on the corresponding mounting bracket in the cavity, adjust the sealing strip so that the sealing strip is in close contact with the inner wall of the cavity, and finally close the movable door to press the outer sealing strip to deform the structure to close the structure tightly. This structure is inside the cavity, and it is easy to be weakened by dust accumulation after long-term operation, so it needs to be taken out and cleaned regularly; the aluminum alloy structure is relatively complex, and it is not easy to ensure the size during processing, and it is easy to deform due to the clamping during processing; the sealing strip structure is easy to be installed improperly during installation, and the length will be shortened due to the influence of temperature, resulting in air leakage, so the sealing strip material requirements are relatively high. Utility Model Content

[0003] The purpose of the utility model is to provide a suspended wind control structure to solve the technical problems mentioned in the above background technology.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model discloses a suspended wind control structure, comprising a movable door hingedly arranged on a material port of a grinding mill, an air blocking valve fixedly arranged on the movable door, corresponding air duct holes are formed on the movable door and the air blocking valve, air blocking plates are movably mounted on the air blocking valve at positions corresponding to the air duct holes, and a support frame for preventing the air blocking plate from falling is arranged outside the air blocking valve.

[0006] Furthermore, a rotary hinge is fixedly provided at the lower part of the movable door, and the rotary hinge is hingedly connected to the upper hinge of the material opening of the grinding mill.

[0007] Furthermore, the inner side of the air blocking valve is provided with clamping flanges at both ends of the upper part of each of the air duct holes, and each of the air blocking plates is movably clamped between two adjacent clamping flanges.

[0008] Furthermore, the cross-section of the support frame is U-shaped, and is fixedly buckled on the outside of the air blocking valve.

[0009] Furthermore, a plurality of studs are evenly spaced and fixedly arranged on the inner side of the movable door, each of the wind blocking plates and the support frame is provided with a through hole for the studs to pass through, and a matching anti-loosening nut is provided at the free end of each stud.

[0010] Compared with the prior art, the beneficial technical effects of the utility model are:

[0011] In the normal working state, due to the light weight of the air blocking plate of the utility model, under the action of the "negative pressure wind" inside the mill system, the air blocking plate deflects toward the inside of the mill and forms a certain angle with the air blocking valve, so that the outside wind can pass through the air duct hole on the air blocking valve and replenish the internal cavity of the mill, so that the internal dust can flow naturally to the dust pipe network along the inside of the cavity. When the lower door is opened or the air volume inside the cavity is insufficient, the air blocking plate will naturally sag due to gravity, fit with the air blocking valve, close the air duct hole, thereby closing the internal dust and achieving the effect of controlling the airflow. The air blocking valve structure of the utility model is convenient and quick to disassemble and assemble, and the sealing adopts the sealing structure of the movable door itself, and no longer uses sealing strips, thereby avoiding the shrinkage of the strips and the leakage of powder. In addition, the movable door of the utility model is a normally open device, and the vibration during daily opening will cause the dust on the wind control structure to flow into the suction pipe network along the internal cavity, which greatly reduces the accumulation of powder on the device and reduces the number of cleaning times, and will not affect the wind control effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model will be further described below in conjunction with the accompanying drawings.

[0013] Figure 1 It is a schematic diagram of the upper three-dimensional structure of the utility model;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 This is a schematic diagram of the installation of the utility model;

[0016] Explanation of the reference numerals: 1. movable door; 2. air blocking valve; 3. support frame; 4. air blocking plate; 5. stud; 6. anti-loosening nut; 7. rotary hinge; 8. air duct hole; 9. snap-on flange. DETAILED DESCRIPTION

[0017] like Figure 1-Figure 3 As shown, a suspended wind control structure includes a movable door 1 hingedly mounted on the material opening of the mill, the movable door 1 is used to isolate the material, and is made of stainless steel as a whole. The lower part of the movable door is provided with a rotating hinge 7 integrally formed with it, and the rotating hinge 7 is hingedly connected to the upper hinge of the material opening of the mill, so that the movable door 1 can be rotated to open, which is convenient for daily observation of the material.

[0018] An air blocking valve 2 is fixedly provided on the movable door, and corresponding air duct holes 8 are provided on the movable door 1 and the air blocking valve 2. The air blocking valve 2 is movably provided with air blocking plates 4 at positions corresponding to the air duct holes 8, and a support frame 3 is fixed to the outside of the air blocking valve 2 for preventing the air blocking plates 4 from falling.

[0019] In this embodiment, the inner side of the air blocking valve 2 is provided with snap-fit ​​flanges 9 at both ends of the upper part of each of the air duct holes 8 , and each of the air blocking plates 4 is movably snap-fitted between two adjacent snap-fit ​​flanges 9 .

[0020] The support frame 3 has a U-shaped cross-section, and is fixedly fastened to the outside of the air blocking valve 2. Specifically, a plurality of studs 5 perpendicular to the side panels are evenly spaced and fixedly arranged on the inner side of the movable door 1 by welding, and each of the air blocking plates 4 and the support frame 3 is respectively provided with a through hole for the studs 5 to pass through, and a matching anti-loosening nut 6 is installed at the free end of each stud 5.

[0021] When assembling the utility model, firstly, the through hole on the air blocking valve 2 is passed through the stud on the movable door 1, and the back side of the air blocking valve 2 is fitted with the inner side of the movable door 1. Then, the air blocking plate 4 is put into the corresponding position of the air blocking valve 2 and locked, and then the through hole of the support frame 3 is also passed through the corresponding position of the stud 5, and finally, the anti-loosening nut 6 is tightened on each stud 5 to lock the above components.

[0022] After the overall structure of the utility model is installed, it becomes a "movable door" with a wind control structure, which can play a role in controlling wind while isolating materials: under normal working conditions, due to the light weight of the wind blocking plate 4, under the action of the "negative pressure wind" inside the mill system, the wind blocking plate 4 deflects to the inside of the mill to form a certain angle with the wind blocking valve 2, so that the outside wind can pass through the air duct holes on the wind blocking valve 2 and replenish the internal cavity of the mill, so that the internal dust can naturally flow to the dust pipe network along the inside of the cavity. When the lower door is opened or the air volume inside the cavity is insufficient, the wind blocking plate 4 will naturally sag due to gravity, fit with the wind blocking valve 2, close the air duct holes, thereby closing the internal dust and achieving the effect of controlling airflow.

[0023] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A suspended wind control structure, characterized in that: It comprises a movable door hingedly arranged on the material port of the grinding mill, an air blocking valve is fixedly arranged on the movable door, corresponding air duct holes are respectively provided on the movable door and the air blocking valve, air blocking plates are movably mounted at positions corresponding to the air duct holes, and a support frame for preventing the air blocking plate from falling is arranged outside the air blocking valve.

2. The suspended wind control structure according to claim 1, characterized in that: A rotary hinge is fixedly arranged at the lower part of the movable door, and the rotary hinge is hingedly connected to the upper hinge of the material opening of the grinding mill.

3. The suspended wind control structure according to claim 1, characterized in that: The inner side of the air blocking valve is provided with clamping flanges at both ends of the upper part of each air duct hole, and each air blocking plate is movably clamped between two adjacent clamping flanges.

4. The suspended wind control structure according to claim 3, characterized in that: The cross section of the support frame is U-shaped, and is fixedly buckled on the outside of the air blocking valve.

5. The suspended wind control structure according to claim 4, characterized in that: A plurality of studs are evenly spaced and fixedly arranged on the inner side of the movable door, each of the wind blocking plates and the support frame is respectively provided with a through hole for the studs to pass through, and a matching anti-loosening nut is arranged at the free end of each stud.

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