Calcium oxide powder screening device

Abstract

The utility model discloses a calcium oxide powder screening device which comprises a screening bin and a screen fixing assembly, a driving motor is fixedly installed on the surface of one side of the screening bin, and the output end of the driving motor extends into the screening bin and is provided with a spiral conveying blade. A feeding hopper and a discharging pipe are installed at one end of the top face and one end of the bottom face of the screening bin correspondingly, and a first screen and a second screen are installed on the bottom face of the screening bin from left to right. According to the calcium oxide powder screening device, calcium oxide powder is conveyed through the arranged spiral conveying blade, the calcium oxide powder passes through the surfaces of the first screen and the second screen in the conveying process, the calcium oxide powder can be screened, and compared with the mode that the calcium oxide powder is screened through a vibrating screen and a reciprocating screen, the calcium oxide powder is screened more evenly. And the calcium oxide powder does not vibrate, so that dust diffusion formed by calcium hydroxide in a violent vibration state can be effectively avoided, and the device is high in practicability and worthy of popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of calcium oxide production equipment, in particular to a calcium oxide powder screening device. Background Art

[0002] Calcium oxide is an inorganic compound with the chemical formula CaO, commonly known as quicklime. Its physical properties are white powder on the surface, grayish white if it is impure, and light yellow or gray if it contains impurities. It is hygroscopic. Calcium oxide is generally produced by limestone calcination, pure nitric acid dissolution of marble, or calcium carbonate calcination. After the production of calcium oxide is completed, it is usually screened and calcium oxide of different sizes is collected separately.

[0003] The existing technology has the following problems:

[0004] After extensive searching, it was found that Chinese patent publication number: CN213223181U discloses a calcium hydroxide large particle impurity screening device, including a rectangular box and two partitions arranged in the box in a vertical direction, an impurity screening part is formed in the box between the two partitions, and an impurity screening part is formed on the side of the box opposite to the impurity screening part. A push plate is also provided in the box for flattening the material to be screened in the impurity screening part and pushing the large particle impurities screened out in the impurity screening part into the impurity screening part. The sieve body for screening calcium hydroxide powder is a horizontally arranged reciprocating screen, and the movement direction of the reciprocating screen is single, which is not as three-dimensional and violent as the vibrating screen, so as to effectively avoid the dust formed by calcium hydroxide in a violent vibration state. Diffusion. It is conducive to maintaining the production environment of the production workshop and reducing the physical and mental damage to production workers.

[0005] However, the above patent still has some problems that need to be improved in actual use. The most obvious one is that the calcium oxide is screened by a single movement direction of a reciprocating screen. Although it does not vibrate as violently as a vibrating screen, dust will still be formed and diffused due to the vibration during the reciprocating screening process, which is not conducive to maintaining the production environment of the production workshop and will cause physical and mental damage to the production workers.

[0006] To this end, we proposed a calcium oxide powder screening device to solve the above-mentioned drawbacks. Utility Model Content

[0007] The utility model aims to provide a calcium oxide powder screening device in order to solve the shortcomings in the prior art.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a calcium oxide powder screening device, comprising a screening bin and a screen fixing assembly, a driving motor is fixedly installed on one side surface of the screening bin, and the output end of the driving motor extends to the screening bin and is installed with a spiral conveying blade, a feed hopper and a discharge pipe are respectively installed on one end of the top surface and one end of the bottom surface of the screening bin, and a first screen and a second screen are installed on the bottom surface of the screening bin from left to right, and the first screen and the second screen are detachably connected to the screening bin through the screen fixing assembly.

[0009] Preferably, the screen fixing assembly consists of a screen fixing frame, a positioning groove, a positioning rod, a limiting groove, a connecting rod, a spring and a shift block. The screen fixing frame is installed on the outer sides of the first screen and the second screen. The surface of the screen fixing frame is provided with a positioning groove, and a positioning rod is inserted in the positioning groove. The surface of the screening bin is provided with a limiting groove, and a connecting rod is slidably connected in the limiting groove, and a shift block is installed at one end of the connecting rod. One end of the positioning rod extends into the limiting groove and is connected to the connecting rod. A spring is sleeved on the outer side of the positioning rod between the connecting rod and the inner wall of the limiting groove, and both ends of the spring are respectively welded to the opposite surfaces of the connecting rod and the limiting groove.

[0010] Preferably, a control panel is fixedly mounted on the outer wall of the screening bin, and the control panel is electrically connected to the driving motor via a wire.

[0011] Preferably, the mesh sizes of the first sieve and the second sieve decrease successively.

[0012] Preferably, the first screen and the second screen are made of 304 stainless steel.

[0013] Preferably, the spiral conveying blade is used in conjunction with a screening bin.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, spiral conveying blades are arranged to convey calcium oxide powder. During the conveying process, the calcium oxide powder passes through the surfaces of the first sieve and the second sieve, so the calcium oxide powder can be screened. Compared with the method of using a vibrating screen and a reciprocating screen to screen the calcium oxide powder, the calcium oxide powder will not vibrate, thereby effectively avoiding the diffusion of dust formed by calcium hydroxide under severe vibration. The utility model has strong practicality and is worthy of promotion.

[0016] 2. In the utility model, by providing a screen fixing assembly, it is convenient to disassemble and assemble the first screen and the second screen, which is beneficial to replace and maintain the first screen and the second screen, and the operation is simple, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a cross-sectional view of a calcium oxide powder screening device proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the external structure of a calcium oxide powder screening device proposed by the utility model;

[0020] Figure 3 for Figure 1 Schematic diagram of the local structure;

[0021] Figure 4 for Figure 3 A is an enlarged schematic diagram.

[0022] Legend:

[0023] 1. Screening bin; 2. Driving motor; 3. Spiral conveying blade; 4. First screen; 5. Second screen; 6. Discharge pipe; 7. Screen fixing assembly; 71. Screen fixing frame; 72. Positioning slot; 73. Positioning rod; 74. Limiting slot; 75. Connecting rod; 76. Spring; 77. Shifting block; 8. Control panel. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Please refer to Figure 1-4 A calcium oxide powder screening device comprises a screening bin 1 and a screen fixing assembly 7, a driving motor 2 is fixedly mounted on one side surface of the screening bin 1, and the output end of the driving motor 2 extends to the screening bin 1 and is equipped with a spiral conveying blade 3, a feeding hopper and a discharge pipe 6 are respectively mounted on one end of the top surface and one end of the bottom surface of the screening bin 1, a first screen 4 and a second screen 5 are mounted on the bottom surface of the screening bin 1 from left to right, the first screen 4 and the second screen 5 are detachably connected to the screening bin 1 through the screen fixing assembly 7, and when in use, the spiral conveying blade 3 is arranged to transport the calcium oxide powder (such as the attached Figure 1 As shown in the figure, the calcium oxide powder is transported from left to right. During the transportation process, the calcium oxide powder passes through the surfaces of the first screen 4 and the second screen 5, and the calcium oxide powder can be screened in multiple stages. Compared with the method of using a vibrating screen and a reciprocating screen to screen the calcium oxide powder, the calcium oxide powder will not vibrate, thereby effectively avoiding the diffusion of dust formed by calcium hydroxide under severe vibration. It is highly practical and worthy of promotion.

[0027] In this embodiment: the screen fixing assembly 7 is composed of a screen fixing frame 71, a positioning groove 72, a positioning rod 73, a limiting groove 74, a connecting rod 75, a spring 76 and a shifting block 77. The screen fixing frame 71 is installed on the outside of the first screen 4 and the second screen 5. The surface of the screen fixing frame 71 is provided with a positioning groove 72, and the positioning groove 72 is inserted with a positioning rod 73. The surface of the screening bin 1 is provided with a limiting groove 74, and the limiting groove 74 is slidably connected with a connecting rod 75, and one end of the connecting rod 75 is installed with a shifting block 77. One end of the positioning rod 73 extends into the limiting groove 74 and is connected to the connecting rod 75. A spring 76 is sleeved on the outside of the positioning rod 73 between the connecting rod 75 and the inner wall of the limiting groove 74, and the two ends of the spring 76 are respectively welded to the opposite surfaces of the connecting rod 75 and the limiting groove 74.

[0028] Specifically, the shift block 77 is pushed toward the side away from the first screen 4 and the second screen 5 to drive the positioning rod 73 to move out of the positioning groove 72 on the surface of the screen fixing frame 71, and then the first screen 4 and the second screen 5 can be removed, which facilitates the disassembly and assembly of the first screen 4 and the second screen 5, is conducive to the replacement and maintenance of the first screen 4 and the second screen 5, and the operation is simple, saving time and effort.

[0029] In this embodiment: a control panel 8 is fixedly mounted on the outer wall of the screening bin 1 , and the control panel 8 is electrically connected to the driving motor 2 via a wire.

[0030] Specifically, it is a common circuit connection structure, which will not be described in detail here.

[0031] In this embodiment, the mesh sizes of the first sieve 4 and the second sieve 5 decrease in sequence.

[0032] Specifically, calcium oxide powders of different specifications can be screened out from small to large.

[0033] In this embodiment, the first screen 4 and the second screen 5 are made of 304 stainless steel.

[0034] Specifically, it has the advantage of being not easy to rust and extending the service life.

[0035] In this embodiment, the spiral conveying blade 3 is used in conjunction with the screening bin 1 .

[0036] Specifically, it is ensured that the calcium oxide powder is smoothly transported and the calcium oxide powder is not likely to remain inside the screening bin 1 .

[0037] In this embodiment: the controller is an existing structure, and the control circuit can be implemented by simple programming by technicians in this field. It belongs to the common knowledge in this field. It is only used without modification, so the control method and circuit connection are not described in detail.

[0038] Working principle: When in use, the spiral conveying blade 3 is set to convey the calcium oxide powder (such as the attached Figure 1 As shown in the figure, the calcium oxide powder passes through the surfaces of the first screen 4 and the second screen 5 during the conveying process, and the calcium oxide powder can be screened in multiple stages. Compared with the method of using a vibrating screen and a reciprocating screen to screen the calcium oxide powder, the calcium oxide powder will not vibrate, thereby effectively avoiding the diffusion of dust formed by calcium hydroxide under severe vibration. It is highly practical and worthy of promotion. Secondly, the dial block 77 is moved to the side away from the first screen 4 and the second screen 5, driving the positioning rod 73 to move out of the positioning groove 72 on the surface of the screen fixing frame 71, and then the first screen 4 and the second screen 5 can be removed, which is convenient for disassembly and assembly of the first screen 4 and the second screen 5, and is conducive to replacement and maintenance of the first screen 4 and the second screen 5. The operation is simple, saving time and effort.

[0039] It should be noted that the model and specifications of the drive motor 2 need to be selected and determined according to the actual specifications of the device, and the specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail.

[0040] The power supply and principle of the driving motor 2 are clear to those skilled in the art and will not be described in detail here.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A calcium oxide powder screening device, comprising a screening bin (1) and a screen fixing assembly (7), characterized in that: A driving motor (2) is fixedly mounted on one side surface of the screening bin (1), and an output end of the driving motor (2) extends into the screening bin (1) and is provided with a spiral conveying blade (3). A feed hopper and a discharge pipe (6) are respectively mounted on one end of the top surface and one end of the bottom surface of the screening bin (1). A first screen (4) and a second screen (5) are mounted on the bottom surface of the screening bin (1) from left to right. The first screen (4) and the second screen (5) are detachably connected to the screening bin (1) via a screen fixing assembly (7).

2. A calcium oxide powder screening device according to claim 1, characterized in that: The screen fixing assembly (7) is composed of a screen fixing frame (71), a positioning groove (72), a positioning rod (73), a limiting groove (74), a connecting rod (75), a spring (76) and a shifting block (77); the screen fixing frame (71) is installed on the outer sides of the first screen (4) and the second screen (5); a positioning groove (72) is provided on the surface of the screen fixing frame (71), and a positioning rod (73) is inserted into the positioning groove (72); and a surface of the screening bin (1) is provided with a A limiting groove (74) is provided, and a connecting rod (75) is slidably connected in the limiting groove (74), and a shifting block (77) is installed at one end of the connecting rod (75), one end of the positioning rod (73) extends into the limiting groove (74) and is connected to the connecting rod (75), a spring (76) is sleeved on the outer side of the positioning rod (73) between the connecting rod (75) and the inner wall of the limiting groove (74), and two ends of the spring (76) are respectively welded to the opposite surfaces of the connecting rod (75) and the limiting groove (74).

3. A calcium oxide powder screening device according to claim 1, characterized in that: A control panel (8) is fixedly mounted on the outer wall of the screening bin (1), and the control panel (8) is electrically connected to the driving motor (2) via a wire.

4. A calcium oxide powder screening device according to claim 1, characterized in that: The mesh sizes of the first sieve (4) and the second sieve (5) decrease in sequence.

5. A calcium oxide powder screening device according to claim 1, characterized in that: The first screen (4) and the second screen (5) are made of 304 stainless steel.

6. A calcium oxide powder screening device according to claim 1, characterized in that: The spiral conveying blade (3) is used in conjunction with the screening bin (1).

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