Quality control device for dolomite powder

Abstract

The quality control device comprises a large storage bin and a small storage bin, a first screening plate and a second screening plate which can rotate are symmetrically connected to the two sides of the top of the small storage bin, and the large storage bin and the small storage bin can be separated through the first screening plate and the second screening plate; the second screening plate is embedded in the first screening plate, so that the first screening plate and the second screening plate are in contact in an abutting mode, the abutting contact part of the first screening plate and the second screening plate is connected with a supporting component, and the first screening plate and the second screening plate are connected with a vibration component; a first anti-blocking component and a second anti-blocking component are symmetrically connected to the inner walls of the two sides of the small storage bin, the first anti-blocking component corresponds to the first screening plate and can block the first screening plate, and the second anti-blocking component corresponds to the second screening plate and can block the second screening plate. A lifting component is connected to the inner top of the large storage bin and connected to the first screening plate and the second screening plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of dolomite powder production, and particularly relates to a quality control device for dolomite powder. Background Art

[0002] Dolomite is mainly formed in crystalline limestone and magnesium-rich metamorphic rocks, and is also found in hydrothermal veins and cavities of carbonate minerals. It also occasionally appears in the cements of various sedimentary rocks. Dolomite has a wide range of applications in the fields of building materials, glass, ceramics, refractory materials, chemical industry, environmental protection, energy conservation, agriculture, medicine, etc. It can also be used as basic refractory materials, flux for blast furnace ironmaking, and for the production of calcium magnesium phosphate fertilizer and magnesium sulfate.

[0003] After dolomite is crushed, dolomite powder is obtained. Dolomite powder will be stored uniformly before being packaged and sold. Before packaging, dolomite powder is transported by a conveyor belt. Figure 1 It is a structural schematic diagram of an existing dolomite powder transportation system. As Figure 1 shown, the dolomite powder transportation system includes a conveyor belt and a storage bin. The storage bin includes a plurality of storage bins 100 and a storage bin 200. The plurality of storage bins 100 are connected to the storage bin 200. The inside of the storage bin 100 is connected to the inside of the storage bin 200. The cross-section of each storage bin 100 is trapezoidal. An outlet controller 300 is provided at the bottom outlet of each storage bin 100. The conveyor belt is arranged below the outlet controller 300. Dolomite powder is first stored in the storage bin 100, and then the outlet controller 300 controls the dolomite powder in each storage bin 100 to fall from the outlet to the conveyor belt, and then the conveyor belt transports the dolomite powder to the packaging equipment.

[0004] At present, when producing and selling, the quality of the packaged dolomite powder fails to meet the needs of users. There are often feedbacks from users, which increases the production cost of dolomite powder production and sales. The fact that the quality of dolomite powder fails to meet the needs of users is specifically manifested as the non-uniform particle size of dolomite powder. The problem is that the last screening of dolomite powder is not in place, resulting in non-uniform particle size of dolomite powder stored in the storage bin 100. Therefore, it is necessary to control the quality of dolomite powder before packaging and selling to make the particle size of dolomite powder uniform. Summary of the Utility Model

[0005] In view of the deficiencies of the prior art, the purpose of the present utility model is to provide a quality control device for dolomite powder to solve the problem that the quality of dolomite powder cannot be guaranteed before packaging and selling. The specific technical solutions are as follows:

[0006] A quality control device for dolomite powder, comprising a large storage bin and a plurality of small storage bins connected to the bottom of the large storage bin. On both sides of the top of each small storage bin, a rotatable first screening plate and a second screening plate are symmetrically connected. The first screening plate and the second screening plate can separate the large storage bin and the small storage bin. The first screening plate and the second screening plate are provided with screening holes of the same aperture. The second screening plate is embedded in the first screening plate so that the first screening plate and the second screening plate are in contact with each other. A support member is connected to the contact portion of the first screening plate and the second screening plate. The support member is used to horizontally support the first screening plate and the second screening plate. A vibration member is connected to the first screening plate and the second screening plate;

[0007] On the inner walls on both sides of the small storage bin, a first anti-blocking member and a second anti-blocking member are symmetrically connected. When the first screening plate deflects downward, the first anti-blocking member corresponds to the first screening plate and can prevent the first screening plate from being blocked. When the second screening plate deflects downward, the second anti-blocking member corresponds to the second screening plate and can prevent the second screening plate from being blocked;

[0008] A lifting member is connected to the inner top of the large storage bin. The lifting member is connected to the first screening plate and the second screening plate. The lifting member can drive the downwardly deflected first screening plate and second screening plate to lift upward.

[0009] Preferably, one end of the first screening plate forms a groove. On both sides of the groove, insertion blocks are formed. First through holes are opened in the insertion blocks. The other end of the first screening plate away from the groove is cylindrical. A first cavity is arranged in the cylindrical portion. The first cavity is used to rotatably connect the first screening plate to the top of the small storage bin.

[0010] Preferably, one end of the second screening plate forms a protrusion. On both sides of the protrusion, insertion sockets are formed. Second through holes are opened in the protrusion. The other end of the second screening plate away from the protrusion is cylindrical. A second cavity is arranged in the cylindrical portion. The second cavity is used to rotatably connect the second screening plate to the top of the small storage bin;

[0011] Wherein, the protrusion can extend into the groove, and the insertion block can be inserted into the insertion socket, so that the first screening plate and the second screening plate are in contact with each other, and the first through hole corresponds to the second through hole.

[0012] Preferably, symmetric mounting plates are connected to both sides of the top of the storage bin, a mounting base is connected to the mounting plate, a shaft rod is mounted on the mounting base, and the first screening plate and the second screening plate are respectively rotatably connected to the shaft rod.

[0013] Preferably, both the first anti-blocking member and the second anti-blocking member include a needle plate and a plurality of pins connected to the needle plate. The needle plate is connected to the inner wall of the storage bin, and the outer diameter of the pin matches the aperture of the screening hole so that the pin can be inserted into the screening hole.

[0014] Preferably, blocks are connected to both ends of the needle plate, mounting grooves are provided on the inner walls on both sides of the storage bin, and clamping grooves matching the blocks are provided at the bottom of the mounting grooves. The needle plate is installed in the mounting groove, and the block is clamped in the clamping groove.

[0015] Preferably, the support member includes a mounting frame and a telescopic rod member connected to the mounting frame. The mounting frame is arranged in alignment with the large storage bin, and the telescopic rod member passes through the large storage bin from one side of the large storage bin, then passes through the first screening plate and the second screening plate, and then is connected to the other side of the large storage bin.

[0016] Preferably, the lifting member is a telescopic rod member. Mounting positions are provided on the first screening plate and the second screening plate. The fixed end of the telescopic rod member is connected to the inner top of the large storage bin, and the movable end of the telescopic rod member is connected to the mounting position.

[0017] A quality control device for dolomite powder provided by the present utility model adds two screening plates at the connection part between the existing large storage bin and the small storage bin. The screening plates can perform a final screening on the dolomite powder before it exits the bin, so that the particle size of the dolomite powder flowing out from the bottom of the small storage bin is uniform, the quality of the dolomite powder sold in packages can be controlled, and at the same time, the provided screening plates can rotate. In this way, when the two screening plates are opened, the dolomite powder particles remaining on the screening plates after screening can fall into the small storage bin and flow out from the bottom of the small storage bin to be collected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0019] Figure 1 is a schematic structural diagram of an existing dolomite powder transportation system;

[0020] Figure 2It is the top view of the quality control device for dolomite powder provided by the present utility model;

[0021] Figure 3 It is the schematic internal structure diagram of the quality control device for dolomite powder provided by the present utility model;

[0022] Figure 4 It is the connection schematic diagram of the storage bin and the needle plate provided by the present utility model;

[0023] Figure 5 It is the schematic structure diagram of the first screening plate provided by the present utility model;

[0024] Figure 6 It is the schematic structure diagram of the second screening plate provided by the present utility model. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top part", "bottom part", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It 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 should not be construed as a limitation to the present utility model.

[0027] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of the terms "first", "second", "third", etc., it is only for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "linkage", and "setting" 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 an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The embodiments of the present utility model will be described below according to its overall structure.

[0029] Refer to Figure 1 、 Figure 2 and Figure 3 , the quality control device of the dolomite powder includes a storage bin 200 and a plurality of storage bins 100 connected to the bottom of the storage bin 200. On both sides of the top of the storage bin 100, a rotatable first screening plate 1 and a second screening plate 2 are symmetrically connected. The first screening plate 1 and the second screening plate 2 can cover the top opening of the storage bin 100, thereby separating the storage bin 200 and the storage bin 100. Screening holes 3 with the same aperture are provided on the first screening plate 1 and the second screening plate 2. The second screening plate 2 is embedded in the first screening plate 1, so that the first screening plate 1 and the second screening plate 2 are in contact with each other. A support member 4 is connected to the contact part of the first screening plate 1 and the second screening plate 2. The support member 4 is used to horizontally support the first screening plate 1 and the second screening plate 2. A vibration member 25 is connected to the first screening plate 1 and the second screening plate 2.

[0030] Refer to Figure 3 , on the inner walls 103 on both sides of the storage bin 100, a first anti-blocking member 5 and a second anti-blocking member 6 are symmetrically connected. When the first screening plate 1 deflects downward, the first anti-blocking member 5 corresponds to the first screening plate 1 and can prevent blockage of the first screening plate 1; when the second screening plate 2 deflects downward, the second anti-blocking member 6 corresponds to the second screening plate 2 and can prevent blockage of the second screening plate 2.

[0031] Refer to Figure 3 , a lifting member 7 is connected to the inner top of the storage bin 200. The lifting member 7 is connected to the first screening plate 1 and the second screening plate 2.

[0032] Refer to Figure 3 、 Figure 5 and Figure 6, specifically, assembly positions 16 are provided on both the first screening plate 1 and the second screening plate 2. The assembly positions 16 are used to install the vibration components 25. The vibration components 25 are vibration motors and their mounting components. The vibration motors are common technical means for realizing plate vibration, which can cause the first screening plate 1 and the second screening plate 2 to vibrate, facilitating the passage of dolomite powder through the screening holes 3. The vibration components 25 are fixedly connected between the first screening plate 1 and the second screening plate 2, that is, the vibration components 25 are fixedly connected to the first screening plate 1 and the second screening plate 2. When the first screening plate 1 and the second screening plate 2 deflect, the vibration components 25 still remain on the first screening plate 1 and the second screening plate 2.

[0033] Refer to Figure 3 , due to the first screening plate 1 and the second screening plate 2 being provided at the connection between the storage large bin 200 and the storage small bin 100, the first screening plate 1 and the second screening plate 2 separate the storage large bin 200 from the storage small bin 100. When performing the last quality control on dolomite powder, the dolomite powder is put into the storage large bin 200. The dolomite powder stored in the storage large bin 200 enters the storage small bin 100 after passing through the screening holes 3 on the first screening plate 1 and the second screening plate 2. When the storage small bin 100 is filled with dolomite powder, if more dolomite powder is continuously put into the storage large bin 200, since the first screening plate 1 and the second screening plate 2 act as partitions and the storage small bin 100 is already filled with the screened dolomite powder, the continuously put dolomite powder will accumulate in the storage large bin 200. When the discharge controller 300 at the bottom of the storage small bin 100 is operated to make the dolomite powder in the storage small bin 100 fall onto the conveyor belt, since the storage amount of dolomite powder in the storage small bin 100 is gradually decreasing, and in addition, the vibration components 25 can cause the first screening plate 1 and the second screening plate 2 to vibrate, therefore, the dolomite powder in the storage large bin 200 can continue to pass through the first screening plate 1 and the second screening plate 2 and enter the storage small bin 100. When there is no vibration component 25, the dolomite powder in the storage large bin 200 can also pass through the first screening plate 1 and the second screening plate 2, but the passing speed is slower.

[0034] The first screening plate 1 and the second screening plate 2 are rotatably arranged. When screening is required, the first screening plate 1 and the second screening plate 2 are horizontally arranged at the top of the storage bin 100 under the action of the support member 4 to separate the storage bin 200 and the storage bin 100. When it is necessary to clean the dolomite powder remaining on the first screening plate 1 and the second screening plate 2 in the storage bin 200 that has been screened out, the support member 4 no longer supports the first screening plate 1 and the second screening plate 2. Under their own gravity, the first screening plate 1 and the second screening plate 2 will deflect downward and approach the inner walls 103 on both sides of the storage bin 100. The storage bin 200 and the storage bin 100 are no longer blocked by the first screening plate 1 and the second screening plate 2. In this way, the dolomite powder on the first screening plate 1 and the second screening plate 2 will fall into the storage bin 100. At the same time, when the first screening plate 1 and the second screening plate 2 deflect downward, the first anti-blocking member 5 and the second anti-blocking member 6 on the inner walls 103 on both sides of the storage bin 100 can respectively clean the screening holes 3 on the first screening plate 1 and the second screening plate 2 to prevent blockage.

[0035] After the dolomite powder remaining on the first screening plate 1 and the second screening plate 2 in the storage bin 200 that has been screened out completely falls into the storage bin 100 and is cleaned up, the lifting member 7 lifts the first screening plate 1 and the second screening plate 2 to the horizontal position, and then the support member 4 continues to support the first screening plate 1 and the second screening plate 2, so that the first screening plate 1 and the second screening plate 2 continue to separate the storage bin 200 and the storage bin 100.

[0036] See Figure 5 and Figure 6, in a preferred embodiment, one end of the first screening plate 1 forms a groove 11, both sides of the groove 11 form insertion blocks 12, a first through hole 13 is formed in the insertion block 12, the other end of the first screening plate 1 away from the groove 11 is provided in a cylindrical shape, and a first cavity 14 is arranged inside the cylindrical shape. The first cavity 14 is used to rotatably connect the first screening plate 1 to the top of the storage bin 100. One end of the second screening plate 2 forms a protrusion 21, both sides of the protrusion 21 form sockets 22, a second through hole 23 is formed in the protrusion 21, the other end of the second screening plate 2 away from the protrusion 21 is provided in a cylindrical shape, and a second cavity 24 is arranged inside the cylindrical shape. The second cavity 24 is used to rotatably connect the second screening plate 2 to the top of the storage bin 100; wherein, the protrusion 21 can extend into the groove 11, and the insertion block 12 can be inserted into the socket 22, so that the end faces of the first screening plate 1 and the second screening plate 2 are in contact with each other, the first through hole 13 corresponds to the second through hole 23, and the support member 4 can extend into the first through hole 13 and the second through hole 23 to support the first screening plate 1 and the second screening plate 2 simultaneously.

[0037] Refer to Figure 3 , in a preferred embodiment, symmetric mounting plates 10 are connected to both sides of the top of the storage bin 100, a mounting base 8 is connected to the mounting plate 10, a shaft rod 9 is mounted on the mounting base 8, and the first screening plate 1 and the second screening plate 2 are respectively rotatably connected to the shaft rod 9. Wherein, the mounting plate 10 is arranged such that the mounting plate 10 extends from the top of the storage bin 100 into the bin, so that when the first screening plate 1 deflects downward, the first screening plate 1 can abut against the mounting plate 10, and thus the first screening plate 1 is flush with the inner wall side of the storage bin 100 after deflection. The same applies to the second screening plate 2.

[0038] Refer to Figure 3 、 Figure 5 and Figure 6 , specifically, the first screening plate 1 and the second screening plate 2 can be respectively sleeved on the shaft rod 9 of the symmetric mounting plates 10, specifically, the shaft rod 9 passes through the first through hole 13 on the first screening plate 1 and the second through hole 23 on the second screening plate 2.

[0039] Refer to Figure 3 、 Figure 5 and Figure 6, in a preferred embodiment, both the first anti-clogging member 5 and the second anti-clogging member 6 include a needle plate 30 and a plurality of pins 31 connected to the needle plate 30. The needle plate 30 is connected to the inner wall of the storage bin 100. The outer diameter of the pin 31 matches the aperture of the screening hole 3, so that the pin 31 can be inserted into the screening hole 3. The number of the pins 31 is the same as the number of the screening holes 3. When the first screening plate 1 and the second screening plate 2 deflect downward and approach the inner walls on both sides of the storage bin 100, the pins 31 correspond to the screening holes 3, and the pins 31 can be inserted into and pass through the screening holes 3, thereby cleaning the screening holes 3 of the first screening plate 1 and the second screening plate 2.

[0040] Refer to Figure 3 and Figure 4 , in a more preferred embodiment, both ends of the needle plate 30 are connected with clamping blocks 32. The clamping blocks 32 and the needle plate 30 are integrally formed. An installation groove 101 is provided on the inner wall 103 of the storage bin 100, and a clamping groove 102 matching the clamping block 32 is provided at the bottom of the installation groove 101. The needle plate 30 is installed in the installation groove 101, and the clamping block 32 is clamped in the clamping groove 102. Specifically, since the inner wall 103 of the storage bin 100 is inclined, the installation groove 101 can enable the needle plates 30 to be placed in the installation groove 101. Coupled with the clamping blocks 32 on the needle plate 30 being clamped on the clamping grooves 102 at the bottom of the installation groove 101, the needle plate 30 is more firmly fixed on the storage bin 100.

[0041] Refer to Figure 2 , Figure 5 and Figure 6 , in a preferred embodiment, the support member 4 includes a mounting frame 41 and a telescopic rod member 42 connected to the mounting frame 41. The mounting frame 41 is aligned with the storage bin 200. The movable end of the telescopic rod member 42 passes through the storage bin 200 from one side of the storage bin 200, then passes through the first screening plate 1 and the second screening plate 2, and is then connected to the other side of the storage bin 200.

[0042] Specifically, when the movable end of the telescopic rod member 42 extends, the movable end of the telescopic rod member 42 passes through the first through hole 13 on the first screening plate 1 and the second through hole 23 on the second screening plate 2 to horizontally support the first screening plate 1 and the second screening plate 2. When the movable end of the telescopic rod member 42 contracts, the movable end of the telescopic rod member 42 is withdrawn from the first through hole 13 and the second through hole 23, and the first screening plate 1 and the second screening plate 2 can deflect downward due to their own weights.

[0043] Refer toFigure 3 In a preferred embodiment, the lifting member 7 is a telescopic rod member. Mounting positions 15 are provided on the first screening plate 1 and the second screening plate 2. The fixed end of the telescopic rod member is connected to the inner top of the storage bin 200, and the movable end of the telescopic rod member is connected to the mounting position 15.

[0044] Specifically, the lifting member 7 is a telescopic rod member. When the first screening plate 1 and the second screening plate 2 are horizontally supported, the movable end of the telescopic rod member serving as the lifting member 7 is in a contracted state. When the first screening plate 1 and the second screening plate 2 deflect downward, it drives the movable end of the telescopic rod member serving as the lifting member 7 to extend. When it is necessary to lift the first screening plate 1 and the second screening plate 2 upward, the movable end of the telescopic rod member serving as the lifting member 7 is driven to contract to lift the first screening plate 1 and the second screening plate 2.

[0045] In summary, a quality control device for dolomite powder provided by the present utility model can screen the particle size of dolomite powder stored in a storage bin before packing and selling, control the quality of dolomite powder before packing and selling, and the entire quality control device is simple and practical to operate, ensuring the selling quality of dolomite powder.

[0046] The foregoing description of specific exemplary embodiments of the present utility model is for the purposes of illustration and exemplification. These descriptions are not intended to limit the present utility model to the precise forms disclosed, and it is obvious that many changes and variations can be made in accordance with the above teachings. Although embodiments of the present utility model have been shown and described, the specific embodiments are merely interpretations of the present utility model and not limitations thereof. The specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present utility model and its practical applications, so that those skilled in the art can, after reading this specification, make modifications, substitutions, variations, and various different selections and changes that do not make creative contributions to the embodiments as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A quality control device for dolomite powder, comprising a large storage bin (200) and a plurality of small storage bins (100) connected to the bottom of the large storage bin (200), characterized in that, On both sides of the top of the storage bin (100), a rotatable first screening plate (1) and a second screening plate (2) are symmetrically connected. The first screening plate (1) and the second screening plate (2) can separate the storage bin (200) and the storage bin (100). Screening holes (3) with the same aperture are provided on the first screening plate (1) and the second screening plate (2). The second screening plate (2) is embedded in the first screening plate (1) so that the first screening plate (1) and the second screening plate (2) are in contact with each other. A support member (4) is connected to the contact part of the first screening plate (1) and the second screening plate (2). The support member (4) is used to horizontally support the first screening plate (1) and the second screening plate (2). A vibration member (25) is connected to the first screening plate (1) and the second screening plate (2); First anti-blocking members (5) and second anti-blocking members (6) are symmetrically connected to the inner walls (103) on both sides of the storage bin (100). When the first screening plate (1) deflects downward, the first anti-blocking member (5) corresponds to the first screening plate (1) and can prevent blockage of the first screening plate (1). When the second screening plate (2) deflects downward, the second anti-blocking member (6) corresponds to the second screening plate (2) and can prevent blockage of the second screening plate (2); A lifting member (7) is connected to the inner top of the storage bin (200). The lifting member (7) is connected to the first screening plate (1) and the second screening plate (2). The lifting member (7) can drive the downwardly deflected first screening plate (1) and second screening plate (2) to lift upward.

2. The quality control device for dolomite powder according to claim 1, characterized in that, One end of the first screening plate (1) forms a groove (11). Plug blocks (12) are formed on both sides of the groove (11). First through holes (13) are provided in the plug blocks (12). The other end of the first screening plate (1) away from the groove (11) is cylindrical. A first cavity (14) is provided in the cylindrical shape. The first cavity (14) is used to rotatably connect the first screening plate (1) to the top of the storage bin (100).

3. The quality control device for dolomite powder according to claim 2, characterized in that, One end of the second screening plate (2) forms a protrusion (21). Socket openings (22) are formed on both sides of the protrusion (21). Second through holes (23) are provided in the protrusion (21). The other end of the second screening plate (2) away from the protrusion (21) is cylindrical. A second cavity (24) is provided in the cylindrical shape. The second cavity (24) is used to rotatably connect the second screening plate (2) to the top of the storage bin (100); Wherein, the protrusion (21) can extend into the groove (11), and the plug blocks (12) can be inserted into the socket openings (22) so that the first screening plate (1) and the second screening plate (2) are in contact with each other, and the first through holes (13) correspond to the second through holes (23).

4. The quality control device for dolomite powder according to claim 1, wherein, Symmetric mounting plates (10) are connected to both sides of the top of the storage bin (100). An installation base (8) is connected to the mounting plate (10). A shaft rod (9) is installed on the installation base (8). The first screening plate (1) and the second screening plate (2) are respectively rotatably connected to the shaft rod (9).

5. The quality control device for dolomite powder according to claim 1, characterized in that, Both the first anti-blocking component (5) and the second anti-blocking component (6) include a needle plate (30) and a plurality of pins (31) connected to the needle plate (30). The needle plate (30) is connected to the inner wall of the storage bin (100). The outer diameter of the pin (31) matches the aperture of the screening hole (3), so that the pin (31) can be inserted into the screening hole (3).

6. The quality control device for dolomite powder according to claim 5, characterized in that, Both ends of the needle plate (30) are connected with clamping blocks (32). Installation grooves (101) are provided on the inner walls (103) on both sides of the storage bin (100). A clamping groove (102) matching the clamping block (32) is provided at the bottom of the installation groove (101). The needle plate (30) is installed in the installation groove (101), and the clamping block (32) is clamped in the clamping groove (102).

7. The quality control device for dolomite powder according to claim 1, wherein The support component (4) includes a mounting frame (41) and a telescopic rod component (42) connected to the mounting frame (41). The mounting frame (41) is aligned with the storage bin (200). The telescopic rod component (42) passes through the storage bin (200) from one side of the storage bin (200), then passes through the first screening plate (1) and the second screening plate (2), and then is connected to the other side of the storage bin (200).

8. The quality control device for dolomite powder according to claim 1, characterized in that, The lifting component (7) is a telescopic rod component. Installation positions (15) are provided on the first screening plate (1) and the second screening plate (2). The fixed end of the telescopic rod component is connected to the inner top of the storage bin (200), and the movable end of the telescopic rod component is connected to the installation position (15).

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