Reciprocating vibrating screen for manually preparing coal sample in power plant

Abstract

The invention discloses a reciprocating vibrating screen for manually preparing a coal sample in a power plant, which comprises a supporting component, a supporting assembly, a blanking assembly arranged in the supporting assembly, and a screening assembly arranged in the supporting assembly; the control component comprises a driving assembly arranged on the supporting assembly, a moving assembly arranged on the driving assembly and a reset assembly arranged on the supporting assembly. According to the reciprocating vibrating screen for manually preparing the coal sample in the power plant, a driving motor drives a rotating disc of a rotating disc to rotate, so that a driving rod on the rotating disc pushes a T-shaped rod to move, a moving rod moves leftwards, and then the driving rod drives a control block on a control column to move; the control rod drives the moving rod to move rightwards through mutual cooperation of the groove and the linkage rod, left-right reciprocating motion of the moving rod is achieved, and therefore the screening plate is driven to move left and right in a reciprocating mode to screen coal.

Description

Technical Field

[0001] The invention relates to the technical field of screening equipment, and in particular to a reciprocating vibrating screen used for artificially preparing coal samples in power plants. Background Art

[0002] Artificial preparation of coal samples is usually for research or experimental purposes, and different methods can be used as needed; general steps include selecting raw materials, processing and finally forming samples; the reciprocating vibrating screen used for artificial preparation of coal samples in power plants refers to the screening module used for screening in the processing link when the power plant prepares coal samples artificially.

[0003] At present, the existing coal yards mostly adopt manual preparation when manufacturing coal samples. When a large number of coal samples are needed for preparation, the efficiency of manual screening is not good. During the preparation, the coal inside the sieve that cannot pass through the sieve needs to be cleaned every once in a while before subsequent screening can be carried out, which greatly affects the screening efficiency and needs to be improved. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problems that the existing reciprocating vibrating screen used for artificially preparing coal samples in power plants requires manpower to repeatedly screen the coal samples, the operation is complicated and the labor intensity is high, the present invention is proposed.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a supporting part, including a supporting assembly, a material discharge assembly arranged inside the supporting assembly, and a screening assembly arranged inside the supporting assembly; a controlling part, including a driving assembly arranged on the supporting assembly, a moving assembly arranged on the driving assembly, and a resetting assembly arranged on the supporting assembly; and a discharging part, including a vibration assembly arranged on the supporting assembly, a sealing assembly arranged on the screening assembly, and a discharging assembly arranged on the supporting assembly.

[0007] As a preferred solution of the reciprocating vibrating screen for artificially preparing coal samples in power plants described in the present invention, the support assembly includes a chassis, support legs arranged on the chassis, a protective shell arranged on the support legs, and an external box arranged on the protective shell.

[0008] As a preferred solution of the reciprocating vibrating screen for artificially preparing coal samples in power plants described in the present invention, the unloading assembly includes an upper hopper arranged at the top of the protective shell, a lower hopper arranged inside the protective shell, and a discharge port arranged on the lower hopper.

[0009] As a preferred solution of the reciprocating vibrating screen for artificially preparing coal samples in power plants as described in the present invention, the screening assembly includes a screening plate arranged inside the protective shell, a connecting plate arranged on the right side of the screening plate, a bending groove arranged inside the protective shell, and a moving wheel arranged on the outside of the screening plate.

[0010] As a preferred solution of the reciprocating vibrating screen for artificially preparing coal samples in power plants described in the present invention, the driving assembly includes a cavity arranged inside the external box, a driving motor arranged inside the cavity, a rotating disk arranged on the driving motor, and a driving rod arranged on the rotating disk.

[0011] As a preferred solution of the reciprocating vibrating screen for artificially preparing coal samples in power plants described in the present invention, the moving assembly includes a rotating wheel arranged inside the cavity, a moving rod arranged between multiple rotating wheels, and a T-shaped rod arranged on the moving rod.

[0012] As a preferred solution of the reciprocating vibrating screen for artificially preparing coal samples in power plants described in the present invention, the reset assembly includes a control column arranged inside the cavity corresponding to the right side of the rotating wheel, a control rod arranged on the control column, a control block arranged on the control column, a groove arranged at the top of the control rod, and a connecting rod arranged at the front end of the moving rod.

[0013] As a preferred solution of the reciprocating vibrating screen for artificially preparing coal samples in power plants described in the present invention, the vibration assembly includes an inclined surface arranged on the protective shell, a wave plate arranged on the inclined surface, a discharge plate arranged on the screening plate, and a roller arranged on the discharge plate.

[0014] As a preferred solution of the reciprocating vibrating screen for artificially preparing coal samples in power plants as described in the present invention, the sealing assembly includes a connecting head arranged on the discharge plate, a connecting rod arranged on the connecting head, an elbow arranged on the connecting rod, a sliding groove arranged on the screening plate, a sliding block arranged inside the sliding groove, a long rod arranged inside the sliding groove, and a sealing spring arranged on the long rod.

[0015] As a preferred solution of the reciprocating vibrating screen for artificially preparing coal samples in power plants described in the present invention, the discharge assembly includes a discharge channel arranged on the left side of the lower hopper, a material transport vehicle arranged on the discharge port, a rotating plate arranged on the protective shell, and a blocking rod arranged on the protective shell.

[0016] The beneficial effects of the present invention are as follows: the driving motor drives the rotating disk of the turntable to rotate, so that the driving rod on the rotating disk pushes the T-bar to move, thereby realizing the movement of the moving rod to the left, and then the driving rod drives the control block on the control column to move, so that the control rod drives the moving rod to move right through the mutual cooperation of the groove and the connecting rod, thereby realizing the left and right reciprocating motion of the moving rod, thereby driving the screening plate to reciprocate left and right to screen the coal; when the screening plate moves to the left, the inclined surface at the left end will squeeze the top of the discharge plate, so that the left end of the discharge plate is in an open state, and the roller at the top of the discharge plate that controls the screening plate to the left will contact the wave plate, thereby causing the entire screening plate to vibrate, and at the same time, the left end of the bending groove tilts downward, so that the left end of the screening plate is lower than the right end, and after the vibration occurs, the coal that cannot pass through the screening plate inside will be discharged from the device through the discharge channel, thereby realizing the effect of equipment automation. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 1 The overall structural schematic diagram of the reciprocating vibrating screen used for artificially preparing coal samples in power plants according to the present invention.

[0019] Figure 2 The present invention is a schematic structural diagram of a material discharge assembly of a reciprocating vibrating screen for artificially preparing coal samples in a power plant.

[0020] Figure 3 The present invention is a schematic diagram of the wave plate structure of a reciprocating vibrating screen for artificially preparing coal samples in a power plant.

[0021] Figure 4 The present invention is a schematic diagram of the control component structure of a reciprocating vibrating screen for artificially preparing coal samples in a power plant.

[0022] Figure 5 The present invention is a schematic diagram of the screening plate structure of the reciprocating vibrating screen used for artificially preparing coal samples in power plants.

[0023] Figure 6 The present invention is a schematic structural diagram of a plugging assembly of a reciprocating vibrating screen for artificially preparing coal samples in a power plant. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0028] Example 1, reference Figure 1 to Figure 6 , which is the first embodiment of the present invention, provides a reciprocating vibrating screen for artificially preparing coal samples in power plants. The device includes a supporting part 100, including a supporting assembly 101, a feeding assembly 102 arranged inside the supporting assembly 101, and a screening assembly 103 arranged inside the supporting assembly 101.

[0029] The support assembly 101 is used to support the screening assembly 103 so that the screening assembly 103 can screen the coal discharged from the lowering assembly 102 , and the lowering assembly 102 is used to provide coal for the screening assembly 103 .

[0030] Preferably, the coal material to be screened is poured into the material discharge assembly 102, and the coal material is guided through the screening assembly 103 by the material discharge assembly 102, so that the sample coal meets the standard.

[0031] Furthermore, the control component 200 includes a driving component 201 disposed on the supporting component 101 , a moving component 202 disposed on the driving component 201 , and a resetting component 203 disposed on the supporting component 101 .

[0032] Among them, the driving component 201 is used to control the operation of the moving component 202 and the resetting component 203, so that the moving component 202 and the resetting component 203 control the operation of the screening component 103 to screen the coal. The setting of the moving component 202 is used to control the left movement of the screening plate 103a, and the resetting component 203 is used to control the screening plate 103a to return to its original position.

[0033] Preferably, the driving component 201 drives the moving component 202, so that the moving component 202 controls the screening component 103 to move to the left, and then the resetting component 203 controls the screening component 103 to return to its original position, so that the screening component 103 reciprocates left and right to screen the coal.

[0034] Furthermore, the discharge component 300 includes a vibration component 301 disposed on the support component 101 , a blocking component 302 disposed on the screening component 103 , and a discharge component 303 disposed on the support component 101 .

[0035] Among them, the vibration component 301 is configured to control the vibration of the screen plate 103a when the screen plate 103a is tilted, so that the coal inside the screen plate 103a is discharged from the equipment, the blocking component 302 is used to block the left end of the screen plate 103a, and the discharge component 303 is used to discharge the screened coal from the equipment.

[0036] Preferably, when the screen plate 103a reciprocates left and right, the blocking assembly 302 and the vibration assembly 301 cooperate with each other, so that the screen plate 103a vibrates, making it impossible for the coal inside to pass through the screen plate 103a to be discharged from the device.

[0037] In summary: the movement of the moving component 202 and the reset component 203 is controlled by the driving component 201, so that the screening component 103 follows it to realize left and right reciprocating motion, and the coal is screened. After the screening plate 103a moves to the left, it will contact the vibration component 301, so that the blocking component 302 is opened, and then the left end of the screening plate 103a will vibrate under the action of the vibration component 301, so that the coal inside cannot pass through the screening plate 103a and is discharged from the equipment, thereby preventing excessive accumulation of coal from affecting the screening effect of the equipment.

[0038] Example 2, reference Figure 1 to Figure 5 , which is the second embodiment of the present invention, includes: the support assembly 101 includes a chassis 101a, support legs 101b arranged on the chassis 101a, a protective shell 101c arranged on the support legs 101b, and an external box 101d arranged on the protective shell 101c.

[0039] Among them, the chassis 101a and the supporting legs 101b are used to support the protective shell 101c, the protective shell 101c is used to provide a corresponding screening space for the screening component 103, and the external box 101d is used to place the driving component 201, the moving component 202 and the resetting component 203, so that the driving component 201 can control the operation of the screening component 103.

[0040] Furthermore, the material discharge assembly 102 includes an upper hopper 102a disposed at the top of the protective shell 101c, a lower hopper 102b disposed inside the protective shell 101c, and a discharge port 102c disposed on the lower hopper 102b.

[0041] Among them, the upper hopper 102a is configured to facilitate the coal to enter the screening component 103, the lower hopper 102b is configured to collect the screened coal, the discharge port 102c is configured to discharge the screened coal inside the lower hopper 102b, and a crushing device is provided on the upper side of the upper hopper 102a to facilitate the crushing of the coal.

[0042] Furthermore, the screening assembly 103 includes a screening plate 103a disposed inside the protective shell 101c, a connecting plate 103b disposed on the right side of the screening plate 103a, a bending groove 103c disposed inside the protective shell 101c, and a moving wheel 103d disposed on the outside of the screening plate 103a.

[0043] The sieve plate 103a is used to screen the coal, and the sieve plate 103a can be replaced to facilitate screening of coal of different specifications. The connection plate 103b is used to connect the moving rod 202b and the sieve plate 103a. When the sieve plate 103a moves to the left, the connection plate 103b can block the gap between the sieve plate 103a and the inner wall to prevent unscreened coal from entering the lower hopper 102b at the lower side.

[0044] In addition, the setting of the bending groove 103c is used to control the left end of the screen plate 103a to drop when it moves, so that the screen plate 103a is tilted, thereby facilitating the discharge of the internal coal that cannot pass through the equipment and preventing the coal from accumulating and affecting the screening effect.

[0045] Preferably, when screening, the screening plate 103a will move left and right, and the bending groove 103c is set so that the left end of the screening plate 103a will slide up and down to discharge the coal that cannot pass through the screening plate 103a, thereby preventing excessive accumulation of coal inside and affecting the screening effect of the equipment.

[0046] Furthermore, the driving assembly 201 includes a cavity 201a disposed inside the external box 101d, a driving motor 201b disposed inside the cavity 201a, a rotating disk 201c disposed on the driving motor 201b, and a driving rod 201d disposed on the rotating disk 201c.

[0047] Preferably, the driving motor 201b is configured to control the rotation of the rotating disk 201c, so that the rotating disk 201c controls the driving rod 201d to realize circular motion, so that the rotation of the driving rod 201d pushes the moving component 202 so that the moving component 202 drives the moving rod 202b to move to the left, and then the driving rod 201d controls the operation of the reset component 203 so that the reset component 203 controls the moving rod 202b to return to its original position, thereby realizing the left and right reciprocating motion of the moving rod 202b.

[0048] Furthermore, the moving assembly 202 includes a rotating wheel 202a disposed inside the cavity 201a, a moving rod 202b disposed between the plurality of rotating wheels 202a, and a T-shaped rod 202c disposed on the moving rod 202b.

[0049] Preferably, the rotating wheel 202a is used to cooperate with the track on the moving rod 202b, so that the moving rod 202b can only reciprocate left and right between the rotating wheels 202a, and the T-bar 202c is set to connect the moving rod 202b, so that the driving rod 201d can push the bottom end of the T-bar 202c when performing a circular motion, thereby driving the moving rod 202b to move to the left.

[0050] Furthermore, the reset assembly 203 includes a control column 203a arranged inside the cavity 201a corresponding to the right side of the rotating wheel 202a, a control rod 203b arranged on the control column 203a, a control block 203c arranged on the control column 203a, a groove 203d arranged at the top of the control rod 203b, and a connecting rod 203e arranged at the front end of the moving rod 202b.

[0051] Among them, the control column 203a is used to position the control block and the control block 203c, so that the driving rod 201d can drive the control rod 203b to rotate through the cooperation of the control block 203c, and the groove 203d is used to cooperate with the connecting rod 203e. When the driving rod 201d squeezes the control rod, the control rod 203b will squeeze the connecting rod 203e through the groove 203d on the upper side, thereby controlling the moving rod 202b to reset to the right, thereby realizing the left and right reciprocating motion of the moving rod 202b.

[0052] Preferably, the rotating disk 201c is controlled to rotate by the operation of the driving motor 201b so that the driving rod 201d on the rotating disk 201c can realize circular motion together with the rotating disk 201c, so that one of the driving rods 201d pushes the T-shaped rod 202c to move, so that the moving rod 202b moves leftward with it, and when the driving rod 201d and the T-shaped rod 202c are disengaged, the other driving rod 201d will squeeze the control rod, so that the control column 203a drives the control rod 203b to rotate rightward, so that the groove 203d drives the moving rod 202b to return to its original position through the connecting rod 203e, thereby realizing the left and right reciprocating motion of the moving rod 202b.

[0053] In summary: the operation of the driving motor 201b is used to control the rotating disk 201c to rotate so that the driving rod 201d on the rotating disk 201c can realize circular motion together with the rotating disk 201c, so that one of the driving rods 201d pushes the T-shaped rod 202c to move, so that the moving rod 202b moves leftward with it. When the driving rod 201d and the T-shaped rod 202c are disengaged, the other driving rod 201d will squeeze the control rod, so that the control column 203a drives the control rod 203b to rotate right, so that the groove 203d drives the moving rod 202b to return to its original position through the connecting rod 203e, realizing the left and right reciprocating motion of the moving rod 202b, so that the moving rod 202b drives the screening plate 103a to move back and forth left and right through the connecting block to screen the coal.

[0054] Example 3, reference Figure 3 to Figure 6 , which is the third embodiment of the present invention, includes: the vibration component 301 includes an inclined surface 301a arranged on the protective shell 101c, a wave plate 301b arranged on the inclined surface 301a, a discharge plate 301c arranged on the screening plate 103a, and a roller 301d arranged on the discharge plate 301c.

[0055] Among them, the inclined surface 301a is used to place the wave plate 301b, so that the inclination amplitude of the wave plate 301b is the same as the angle of the left end of the bending groove 103c, the discharge plate 301c is used to block the screening plate 103a to prevent the material from being discharged from the screening plate 103a through the left side, and the roller 301d is used to cooperate with the bending groove 103c to drive the screening plate 103a to rotate.

[0056] Preferably, when the moving assembly 202 controls the screening plate 103a to move to the left, the inclined surface 301a and the wave plate 301b will squeeze the top of the discharge plate 301c, so that the discharge plate 301c opens, and then the roller 301d will move at the bottom of the wave plate 301b, so that the discharge plate 301c shakes, thereby causing the screening plate 103a to vibrate, thereby assisting the screening plate 103a in discharging materials.

[0057] Furthermore, the blocking assembly 302 includes a connector 302a disposed on the discharge plate 301c, a connecting rod 302b disposed on the connector 302a, an elbow 302c disposed on the connecting rod 302b, a sliding groove 302d disposed on the screening plate 103a, a sliding block 302e disposed inside the sliding groove 302d, a long rod 302f disposed inside the sliding groove 302d, and a blocking spring 302g disposed on the long rod 302f.

[0058] Among them, the connecting head 302a is used to connect the discharge plate 301c and the connecting rod 302b, so that the connecting rod 302b can control the discharge plate 301c, so that the discharge plate 301c is closed, the setting of the elbow 302c is used to connect the connecting rod 302b and the sliding block 302e together, so that the setting of the long rod 302f is used to limit the moving trajectory of the sliding block 302e, and the blocking spring 302g is used to push the sliding block 302e, so that the connecting rod 302b controls the discharge plate 301c to close.

[0059] Preferably, the sliding block 302e is pushed to move by the closing spring 302g, so that the moving block pulls the connecting rod 302b to move through the elbow 302c, so that the discharge plate 301c is closed to block the left end of the screening plate 103a, and when the screening plate 103a moves to the left, the wave plate 301b will push the discharge plate 301c to rotate, and when the screening plate 103a continues to move to the left, the top of the discharge plate 301c will follow the lower side of the wave plate 301b to shake up and down, thereby driving the screening plate 103a to vibrate, thereby assisting the equipment to discharge the coal that cannot be screened.

[0060] Furthermore, the discharge assembly 303 includes a discharge channel 303a disposed on the left side of the lower hopper 102b, a material transport vehicle 303b disposed on the discharge port 102c, a rotating plate 303c disposed on the protective shell 101c, and a blocking rod 303d disposed on the protective shell 101c.

[0061] Among them, the discharge channel 303a is used to discharge the coal that cannot be screened, the material transport cart 303b is set to store the screened coal, the rotating plate 303c is set to block the material transport cart 303b to prevent the material transport cart 303b from escaping from the device during storage, and the blocking rod 303d is set to limit the position of the rotating plate 303c so that it can limit the material transport cart 303b.

[0062] In summary: the driving motor 201b drives the rotating disk 201c of the turntable to rotate, so that the driving rod 201d on the rotating disk 201c pushes the T-shaped rod 202c to move, thereby realizing the movement of the moving rod 202b to the left, and then the driving rod 201d drives the control block 203c on the control column 203a to move, so that the control rod 203b drives the moving rod 202b to move to the right through the mutual cooperation of the groove 203d and the connecting rod 203e, realizing the left and right reciprocating motion of the moving rod 202b, thereby driving the screening plate 103a to reciprocate left and right to screen the coal; the screening plate 103a When 03a moves to the left, the inclined surface 301a at the left end will squeeze the top of the discharge plate 301c, so that the left end of the discharge plate 301c is in an open state, and the roller 301d at the top of the discharge plate 301c will contact the wave plate 301b when controlling the screen plate 103a to move to the left, so that the entire screen plate 103a vibrates, and at the same time, the left end of the bending groove 103c tilts downward, so that the left end of the screen plate 103a is lower than the right end. After the vibration occurs, the coal that cannot pass through the screen plate 103a will be discharged from the device through the discharge channel 303a, thereby realizing the effect of equipment automation.

[0063] The remaining structure is the same as that of Example 2.

[0064] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0065] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A reciprocating vibrating screen for artificially preparing coal samples in power plants, characterized by: include, A support component (100) comprises a support assembly (101), a material discharge assembly (102) arranged inside the support assembly (101), and a screening assembly (103) arranged inside the support assembly (101); A control component (200) comprises a driving component (201) arranged on the supporting component (101), a moving component (202) arranged on the driving component (201), and a resetting component (203) arranged on the supporting component (101); and, The material discharging component (300) comprises a vibration component (301) arranged on the supporting component (101), a blocking component (302) arranged on the screening component (103), and a material discharging component (303) arranged on the supporting component (101).

2. The reciprocating vibrating screen for artificially preparing coal samples in power plants according to claim 1, characterized in that: The support assembly (101) comprises a chassis (101a), support legs (101b) arranged on the chassis (101a), a protective shell (101c) arranged on the support legs (101b), and an external box (101d) arranged on the protective shell (101c).

3. The reciprocating vibrating screen for artificially preparing coal samples in power plants according to claim 2, characterized in that: The unloading assembly (102) comprises an upper hopper (102a) arranged at the top of the protective shell (101c), a lower hopper (102b) arranged inside the protective shell (101c), and a discharge port (102c) arranged on the lower hopper (102b).

4. The reciprocating vibrating screen for artificially preparing coal samples in power plants according to claim 3, characterized in that: The screening assembly (103) comprises a screening plate (103a) arranged inside the protective shell (101c), a connecting plate (103b) arranged on the right side of the screening plate (103a), a bending groove (103c) arranged inside the protective shell (101c), and a moving wheel (103d) arranged on the outside of the screening plate (103a).

5. The reciprocating vibrating screen for artificially preparing coal samples in power plants according to claim 4, characterized in that: The driving assembly (201) comprises a cavity (201a) arranged inside the external box (101d), a driving motor (201b) arranged inside the cavity (201a), a rotating disk (201c) arranged on the driving motor (201b), and a driving rod (201d) arranged on the rotating disk (201c).

6. The reciprocating vibrating screen for artificially preparing coal samples in power plants according to claim 5, characterized in that: The moving assembly (202) comprises a rotating wheel (202a) arranged inside the cavity (201a), a moving rod (202b) arranged between a plurality of the rotating wheels (202a), and a T-shaped rod (202c) arranged on the moving rod (202b).

7. The reciprocating vibrating screen for artificially preparing coal samples in power plants according to claim 6, characterized in that: The reset assembly (203) comprises a control column (203a) arranged inside the cavity (201a) on the right side of the rotating wheel (202a), a control rod (203b) arranged on the control column (203a), a control block (203c) arranged on the control column (203a), a groove (203d) arranged at the top end of the control rod (203b), and a linkage rod (203e) arranged at the front end of the moving rod (202b).

8. The reciprocating vibrating screen for artificially preparing coal samples in power plants according to claim 7, characterized in that: The vibration assembly (301) comprises an inclined surface (301a) arranged on the protective shell (101c), a wave plate (301b) arranged on the inclined surface (301a), a discharge plate (301c) arranged on the screening plate (103a), and a roller (301d) arranged on the discharge plate (301c).

9. The reciprocating vibrating screen for artificially preparing coal samples in power plants according to claim 8, characterized in that: The blocking assembly (302) includes a connector (302a) arranged on the discharge plate (301c), a connecting rod (302b) arranged on the connector (302a), an elbow (302c) arranged on the connecting rod (302b), a sliding groove (302d) arranged on the screening plate (103a), a sliding block (302e) arranged inside the sliding groove (302d), a long rod (302f) arranged inside the sliding groove (302d), and a blocking spring (302g) arranged on the long rod (302f).

10. The reciprocating vibrating screen for artificially preparing coal samples in power plants according to claim 9, characterized in that: The discharge assembly (303) includes a discharge channel (303a) arranged on the left side of the lower hopper (102b), a material transport vehicle (303b) arranged on the discharge port (102c), a rotating plate (303c) arranged on the protective shell (101c), and a blocking rod (303d) arranged on the protective shell (101c).

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