A combined screening and conveying machine

Abstract

The present invention relates to the technical field of material screening and conveying, and particularly relates to an integrated screening and conveying machine. It includes a bracket, a main sprocket shaft, a driven sprocket shaft, a chain, a hydraulic motor, a screening mesh belt, a vibration shaft, a tensioning wheel shaft, a first pressing block and a second pressing block. The hydraulic motor is fixed at the rear end of the bracket, and the output end of the hydraulic motor is connected to the main sprocket shaft. The hydraulic motor drives the main sprocket shaft to rotate, and then drives the driven sprocket shaft to rotate through the bilateral chain. The screening mesh belt is connected to the main sprocket shaft and the driven sprocket shaft. The vibration shaft is arranged in parallel between the main sprocket shaft and the driven sprocket shaft and is connected to the main sprocket shaft and the driven sprocket shaft through the bilateral chain. A number of vibration blocks are evenly distributed in the circumferential direction of the vibration shaft, and the highest position of the vibration block is in contact with the bottom surface of the screening mesh belt. At least two vibration shafts are provided, and the vibration blocks of the two vibration shafts are set with a phase difference. The present invention realizes the synchronous screening and transportation of materials, improves the working efficiency, has vibration excitation, low cost and less energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of material screening and conveying, and particularly relates to an integrated screening and conveying machine. Background Art

[0002] A screening device is a mechanism for separating and screening materials according to the particle size and shape of the materials. It can effectively separate materials of different sizes and improve work efficiency. There are three existing screening technologies: 1) Vibrating screen. The vibrating screen uses vibration to achieve material screening. The material is subjected to vibration on the screen surface, and the particles move according to their size and shape. The materials passing through the screen holes will be screened out, while the larger materials will remain on the screen surface. 2) Drum screen. The drum screen consists of an inclined rotating cylinder. The material enters the drum through the feed inlet. As the drum rotates, the granular material moves through different screen holes. The smaller particles will fall through the screen holes, while the larger particles will continue to roll forward and finally gather at the discharge outlet. 3) Airflow screen. The airflow screen is a screening device that relies on air flow to classify materials into different particle levels. The air flow suspends the light particles or powders in the material in the air, while the heavier particles fall due to gravity, thus achieving separation.

[0003] An existing screening device, such as a Chinese utility model patent with the publication number CN221108535U, discloses a primary vibrating screen feeder for domestic waste. The mechanism includes a screening part, a conveying part, and a crushing part. The screening part includes a frame, on which a number of grid bars are longitudinally arranged at equal intervals. A vibration motor is fixed on the side of the frame. Springs are vertically fixed at the lower parts of the four corners of the frame respectively. A collection hopper is fixed below the frame, and the collection hopper is in the shape of an inverted quadrangular pyramid shell. The conveying part includes a frame, on which a conveyor belt is inclined. The frame is inclined and fixed on the frame through springs. The discharge port of the collection hopper is directly above the conveyor belt. The crushing part includes a crusher, and the feed inlet of the crusher is below the discharge end of the conveyor belt. It can screen out large pieces of construction waste and achieve stable material dropping in a simple way, with low cost and high work efficiency. The above-mentioned screen feeder first screens out the materials and then collects and transports the screened materials, without realizing synchronous screening and conveying, and uses a vibration motor to generate vibration excitation, resulting in high energy consumption and cost.

[0004] Chinese Utility Model Patent, Publication No. CN220111625U, discloses an air flow screening device. One side at the lower end of the screening cylinder of this device is provided with an inclined bracket, and several spring-up stoppers are arranged inside the cylinder. The bottom of the spring-up stopper is provided with a sliding block penetrating through the screening cylinder, and a vibration mechanism is commonly connected between the sliding blocks. One side at the upper end of the screening cylinder is provided with a feed plate, and an air intake mechanism is arranged at the bottom on one side of the screening cylinder. This device can disperse the grains falling into the screening cylinder through the vibration of the spring-up stoppers, so that the chaff in the grains is completely exposed to the air, and then the air discharged through the air guide groove discharges the chaff from the upper end of the screening cylinder, separating the chaff from the grains, and preventing the situation that the grains are incompletely screened due to the entrainment of chaff when falling. The above-mentioned drum screen and air flow screen only screen out the materials, without realizing the synchronous progress of screening and conveying. Moreover, the air flow screen is only applicable to the screening of lighter materials, and the types of materials that can be screened are relatively few.

[0005] In summary, in the current prior art, the synchronous progress of material screening and conveying has not been realized. Usually, the materials are screened first and then transported. Moreover, using a vibration motor to generate vibration excitation has high energy consumption and cost. Therefore, there is an urgent need to study a new device that can meet the synchronous progress of screening and conveying and has low vibration energy consumption and low cost. Summary of the Invention

[0006] To solve the deficiencies existing in the prior art, the present invention provides a screening and conveying integrated machine that can meet the synchronous progress of screening and conveying and has low vibration energy consumption and low cost.

[0007] The technical solution of the present invention is as follows:

[0008] A screening and conveying integrated machine includes a bracket, a main sprocket shaft, a driven sprocket shaft, a chain, a hydraulic motor, a screening mesh belt, a vibration shaft, a tensioning wheel shaft, a first pressing block and a second pressing block.

[0009] The main sprocket shaft and the driven sprocket shaft are arranged in parallel at both ends of the bracket. One end of the driven sprocket shaft is the front end, and one end of the main sprocket shaft is the rear end.

[0010] The hydraulic motor is fixed at the rear end of the bracket. The output end of the hydraulic motor is connected to the main sprocket shaft. The main sprocket shaft is connected to the driven sprocket shaft through a double-sided chain. The hydraulic motor drives the main sprocket shaft to rotate and then drives the driven sprocket shaft to rotate through the double-sided chain.

[0011] The screening mesh belt is connected to the main sprocket shaft and the driven sprocket shaft. The rotation of the main sprocket shaft and the driven sprocket shaft drives the screening mesh belt to move.

[0012] The vibrating shaft is fixed on the bracket. The vibrating shaft is arranged parallel between the main sprocket shaft and the driven sprocket shaft and is connected to the main sprocket shaft and the driven sprocket shaft through double-sided chains. A number of vibrating blocks are evenly distributed in the circumferential direction of the vibrating shaft, and the highest position of the vibrating block is in contact with the bottom surface of the screening mesh belt. At least two vibrating shafts are provided, and the vibrating blocks of the two vibrating shafts are set with a phase difference.

[0013] The tensioning wheel shaft is fixed on the bracket. The tensioning wheel shaft is connected to the double-sided chain and is used for tensioning the double-sided chain.

[0014] The first pressing block is arranged at the upper end of the connection between the vibrating shaft and the chain and is fixed on the bracket. It is set as a rectangular structure, and the lower part is in contact with the chain. Two second pressing blocks are provided. The two second pressing blocks are respectively arranged at both ends of the first pressing block. They are set as semi-circular structures, and the lower parts are in contact with the chain.

[0015] Further, a material shovel is arranged at the front end of the bracket, and baffles are arranged on both sides of the bracket.

[0016] Further, the screening mesh belt is provided with screening holes. Tensioning sleeves are respectively arranged on the main sprocket shaft and the driven sprocket shaft, and the tensioning sleeves are in contact with the screening mesh belt.

[0017] Further, the vibrating shaft is arranged at a position slightly behind the middle of the bracket, which can provide sufficient transportation distance for the material, avoiding the situation that the material is subjected to excessive vibration excitation when it enters the screening mesh belt at the front side and then falls back again at the front side, resulting in the failure to achieve screening and transportation.

[0018] Further, 4 vibrating blocks are arranged on each vibrating shaft.

[0019] Furthermore, the vibrating block is set as a long convex platform with a high middle and low sides. The length is slightly shorter than the vibrating shaft. Six threaded holes are evenly arranged on it and are installed on the vibrating shaft through screw connections. The contact surface between the vibrating block and the vibrating shaft is circular arc-shaped, and the arc radius is the same as the radius of the vibrating shaft, which can ensure the stable installation of the vibrating block on the vibrating shaft. The convex platform surface of the vibrating block in contact with the screening mesh belt is a plane, and a fillet is provided on the edge of the convex platform. The plane and the fillet ensure the stable support of the screening mesh belt by the vibrating block. The two sides of the convex platform of the vibrating block are lower than the middle position, which can avoid excessive bending of the screening mesh belt and improve the service life of the mesh belt.

[0020] Further, the phase difference between the vibrating blocks on the two vibrating shafts in the initial state is 15° or 30° or 45°.

[0021] Further, the tension pulley shaft includes a first tension pulley shaft, a second tension pulley shaft, and a third tension pulley shaft; the first tension pulley shaft is close to the slave sprocket shaft, and the second tension pulley shaft is close to the main sprocket shaft; the third tension pulley shaft is arranged between the first tension pulley shaft and the second tension pulley shaft, and is arranged at the lower end of the bracket, and is connected to the bracket through a tension pulley mounting plate and a tension pulley bracket.

[0022] Furthermore, the tension pulley bracket is fixed on the bracket, the third tension pulley is fixed on the tension pulley mounting plate, the tension pulley mounting plate and the tension pulley bracket are fixedly connected to the bracket, and spring mounting holes are respectively arranged on the tension pulley mounting plate and the tension pulley bracket.

[0023] Further, the first pressing block is arranged in a rectangular structure with an inwardly concave bottom.

[0024] The beneficial effects achieved by the present invention are as follows:

[0025] 1. The present invention realizes the synchronous screening and transportation of materials. By adopting a double-sided chain drive driven by a hydraulic motor to drive the screening mesh belt to transport materials, during the transportation process, the vibrating shaft applies a vertical vibration excitation to the mesh belt. Smaller materials fall through the pores of the mesh belt, and larger materials remain on the mesh belt, realizing the synchronous screening and conveying of materials, and effectively improving the working efficiency.

[0026] 2. The present invention uses vibrating shafts with a set phase difference to apply vertical vibration excitation to the screening mesh belt. Compared with the case without a phase difference, it can generate higher-frequency vibration excitation, avoid the situation of missed screening, and has a more efficient vibration screening effect. According to different requirements, different phase differences can be set, with good adaptability. Compared with vibration motor excitation, the cost is lower and the energy consumption is less.

[0027] 3. The present invention adopts one concave rectangular pressing block and two semi-circular pressing blocks for anti-chain-jumping design, which can increase the reliability of the chain drive. Moreover, the shape of the pressing block fits the chain, minimizing the additional bending stress generated by the anti-chain-jumping device on the chain to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 is a schematic diagram of the structure of the present invention with the screening mesh belt hidden.

[0030] Figure 3 is a schematic diagram of the structure of the present invention with the bracket and the screening mesh belt hidden.

[0031] Figure 4 is a schematic diagram of the vibrating shaft structure in the present invention.

[0032] Figure 5It is a schematic diagram of the installation structure of the third tension pulley shaft in the present invention.

[0033] Figure 6 It is a schematic diagram of the installation structure of the first pressing block and the second pressing block in the present invention.

[0034] In the figure, 1. support; 2. material shovel; 3. driven sprocket shaft; 4. first tension pulley shaft; 5. front vibration shaft; 51. vibration block; 6. third tension pulley shaft; 61. tension pulley mounting plate; 62. tension pulley support; 63. spring mounting hole; 7. rear vibration shaft; 8. second tension pulley shaft; 9. hydraulic motor; 10. screening mesh belt; 11. baffle; 12. tension sleeve; 13. chain; 14. first pressing block; 15. second pressing block. Specific embodiments

[0035] To facilitate the understanding of the present invention by those skilled in the art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0036] As Figures 1 to 6 shown, the present invention provides a screening and conveying integrated machine. Two sprocket shafts, two vibration shafts and three tension pulley shafts are installed on the support 1. Sprockets are installed on both sides of the sprocket shaft, the vibration shaft and the tension pulley shaft, and a chain is installed on each of the sprockets on both sides. The sprocket shaft, the vibration shaft and the tension pulley shaft are installed on the support 1 by a bearing seat through bolts. And, to prevent material splashing from affecting the chain drive, the baffle 11 is installed on the support 1 by bolt connection.

[0037] The sprocket shafts are located on the front and rear sides of the support 1, and include a main sprocket shaft and a driven sprocket shaft 3 arranged in parallel. The driven sprocket shaft 3 is arranged at the front end of the support 1, and the main sprocket shaft is arranged at the rear end of the support 1. Tension sleeves 12 are provided on both the main sprocket shaft and the driven sprocket shaft 3, and a screening mesh belt 10 with evenly distributed sieve holes is installed on the tension sleeve 12. A hydraulic motor 9 is installed on one side of the main sprocket shaft at the rear end. The hydraulic motor 9 drives the main sprocket shaft to rotate. The rotation of the main sprocket shaft drives the driven sprocket shaft 3 to rotate through the chain 13, and then drives the screening mesh belt 10 arranged on the main sprocket shaft and the driven sprocket shaft 3 to move.

[0038] Two vibrating shafts are installed at the middle and rear side of the support 1, which can provide sufficient transportation distance for the material, avoiding that the material is subjected to excessive vibration excitation when it enters the screening mesh belt 10 at the front side and then falls back again at the front side, resulting in the failure to realize screening and conveying. Sprockets are respectively installed on both sides of the vibrating shaft, and the vibrating shaft is driven by a chain 13 to rotate. 4 convex vibrating blocks 51 are respectively installed on each vibrating shaft. By arranging the vibrating shafts at different angles, vibrating excitation with a phase difference can be realized. The vibrating block 51 is set as a long strip-shaped boss with a high middle and low sides, and its length is slightly shorter than that of the vibrating shaft. Six threaded holes are evenly arranged thereon and are installed on the vibrating shaft through screw connections. The joint surface between the vibrating block 51 and the vibrating shaft is circular arc-shaped, and the radius of the circular arc is the same as that of the vibrating shaft, which can ensure that the vibrating block 51 is stably installed on the vibrating shaft. The convex table surface of the vibrating block 51 in contact with the screening mesh belt 10 is a plane, and a fillet is provided on the edge of the convex table. The plane and the fillet ensure that the vibrating block 51 stably supports the screening mesh belt 10. The two sides of the convex table of the vibrating block 51 are lower than the middle position, which can avoid excessive bending of the screening mesh belt 10 and improve the service life of the screening mesh belt 10.

[0039] Specifically, it is stipulated that the angular arrangement of the front vibrating shaft 5 is the initial phase. Rotating the vibrating shaft with the initial phase 45° clockwise is the angular arrangement of the rear vibrating shaft 7. Thus, a 45° phase difference between the two vibrating shafts is set. During the operation of the mechanism, the chain 13 drives the vibrating shaft to rotate. When the front vibrating shaft 5 is at the initial phase, the vibrating block 51 jacks up the screening mesh belt 10 to perform vertical vibration excitation on the screening mesh belt 10. As the chain 13 moves, the two vibrating shafts rotate clockwise. When it rotates 45°, the vibrating block 51 of the rear vibrating shaft 7 jacks up the screening mesh belt 10 to perform vertical vibration excitation on the screening mesh belt 10. Similarly, according to different requirements, the phase difference between the vibrating shafts can be set to 15° or 30°.

[0040] Two tensioning wheel shafts are installed at the front and rear sides of the two vibrating shafts, namely the first tensioning wheel shaft 4 and the second tensioning wheel shaft 8. A tensioning wheel shaft is installed in the middle as the third tensioning wheel shaft 6. The first tensioning wheel shaft 4 and the second tensioning wheel shaft 8 press the chain 13 inward to increase the sprocket wrap angle and prevent chain skipping and chain derailment. The third tensioning wheel shaft 6 is installed on the tensioning wheel shaft fixing plate through a bearing seat to tension the chain 13 outward to achieve a greater degree of tension of the chain 13. The tensioning wheel mounting plate 61 is installed on the tensioning wheel bracket 62 through bolt connections. The tensioning wheel bracket 62 is installed on the side baffle 11 through bolt connections. And a spring mounting hole 63 for installing a tension spring is provided on the lower sides of the tensioning wheel mounting plate 61 and the tensioning wheel bracket 62. The angle of the tensioning wheel mounting plate 61 relative to the tensioning wheel bracket 62 can be adjusted through the tension spring, and then the tension degree of the chain 13 can be adjusted.

[0041] Due to large vibrations, in order to prevent chain skipping and derailing, an anti-chain-skipping device is installed at the sprockets on the two vibrating shafts with the largest vibrations. The device consists of a rectangular first pressing block 14 with a slightly concave lower side and two semi-circular second pressing blocks 15. The first pressing block 14 and the second pressing blocks 15 are fixedly connected to the bracket 1 and the baffle 11 by bolts. The first pressing block 14 is installed directly above the sprocket of the vibrating shaft, and the two semi-circular second pressing blocks 15 are respectively installed on both sides above the sprocket of the vibrating shaft. The pressing blocks act downward on the chain 13 to prevent the chain 13 from skipping, and the shape of the pressing blocks fits the chain 13, minimizing the additional bending stress of the chain 13 to the greatest extent.

[0042] To facilitate the smooth arrival of the material at the screening mesh belt 10, the material shovel 2 is installed at the front end of the bracket 1 by means of screw connection. To facilitate the installation of the screening and conveying integrated machine on machines such as trailers, the lifting lugs are installed at the rear side of the bracket 1 by welding, and the mounting frame is installed at the front side of the bracket 1 by welding.

[0043] In the specific working process:

[0044] The screening and conveying integrated machine is installed on the trailer by means of pin connection through the lifting lugs at the rear side and the mounting frame at the front side of the screening and conveying integrated machine. The trailer drives the entire screening and conveying integrated machine to move relative to the material. Moreover, the installation method of the screening and conveying integrated machine on the trailer should be such that the front side is lower and the rear side is higher, which facilitates the material shovel 21 at the front side of the screening and conveying integrated machine to contact the material at an inclined angle, more efficiently shovel up the material, and reduce the wear of the material shovel 2. Due to the relative movement, the material shovel 2 at the bottom of the front side of the screening and conveying integrated machine shovels the material onto the screening mesh belt 10. At the same time, the hydraulic motor 9 drives the main sprocket shaft to rotate. The rotation of the main sprocket shaft drives the screening mesh belt 10 to move. The movement of the screening mesh belt 10 drives the vibrating shaft to rotate. The vibrating shaft jacks up the mesh belt through the vibrating blocks 51 installed on it, realizing the vibration excitation of the mesh belt. Thus, the smaller materials fall through the pores of the screening mesh belt 10 under the action of vibration and gravity, and the larger materials are conveyed along with the movement of the screening mesh belt 10, realizing the screening and conveying of the materials.

[0045] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention 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 invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0046] In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "arranged" and "connected" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0048] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A screening and conveying integrated machine, characterized in that: It includes a bracket (1), a main sprocket shaft, a driven sprocket shaft (3), a chain (13), a hydraulic motor (9), a screening mesh belt (10), a vibration shaft, a tensioning wheel shaft, a first pressing block (14) and a second pressing block (15); The main sprocket shaft and the driven sprocket shaft (3) are arranged in parallel at both ends of the bracket (1), and one end of the driven sprocket shaft (3) is the front end; The hydraulic motor (9) is fixed at the rear end of the bracket (1), the output end of the hydraulic motor (9) is connected to the main sprocket shaft, and the main sprocket shaft is connected to the driven sprocket shaft (3) through the chain (13); The screening mesh belt (10) is connected to the main sprocket shaft and the driven sprocket shaft (3), and the rotation of the main sprocket shaft and the driven sprocket shaft (3) drives the screening mesh belt (10) to move; The vibration shaft is fixed on the bracket (1), the vibration shaft is arranged in parallel between the main sprocket shaft and the driven sprocket shaft (3) and is connected to the main sprocket shaft and the driven sprocket shaft (3) through the chain (13). A number of vibration blocks (51) are evenly distributed in the circumferential direction of the vibration shaft. The highest position of the vibration block (51) is in contact with the bottom surface of the screening mesh belt (10); At least 2 vibration shafts are provided, and the vibration blocks (51) of the 2 vibration shafts are set with a phase difference; The vibration block (51) is set as a long strip-shaped convex platform with a high middle and low sides, and the contact surface between the vibration block (51) and the vibration shaft is arc-shaped; The convex platform surface of the vibration block (51) in contact with the screening mesh belt (10) is a plane, and there is a fillet on the edge of the convex platform; The tensioning wheel shaft is fixed on the bracket (1), and the tensioning wheel shaft is connected to the chain (13) for tensioning the chain (13); The first pressing block (14) is arranged at the upper end of the connection between the vibration shaft and the chain (13) and is fixed on the bracket (1), set as a rectangular structure, and the lower part is in contact with the chain (13); The second pressing block (15) is provided with 2, and the 2 second pressing blocks (15) are respectively arranged at both ends of the first pressing block (14), set as a semi-circular structure, and the lower part is in contact with the chain (13); A material shovel is arranged at the front end of the bracket (1), and baffles (11) are arranged on both sides of the bracket (1); In the initial state, the phase difference of the vibration blocks (51) on the 2 vibration shafts is 15° or 30° or 45°; The screening and conveying integrated machine is installed on the trailer by means of pin shaft connection through the lifting lugs at the rear side and the mounting frame at the front side of the screening and conveying integrated machine, and the trailer drives the whole screening and conveying integrated machine to move relative to the material. The installation method of the screening and conveying integrated machine on the trailer is that the front side is low and the rear side is high.

2. The integrated screening and conveying machine according to claim 1, wherein: The screening mesh belt (10) is provided with sieve holes, and tensioning sleeves (12) are respectively arranged on the main sprocket shaft and the driven sprocket shaft (3), and the tensioning sleeves (12) are in contact with the screening mesh belt (10).

3. The integrated screening and conveying machine according to claim 1, wherein: The vibration shaft is arranged at a position slightly behind the middle of the bracket (1).

4. The integrated screening and conveying machine according to claim 1, wherein: Each vibration shaft is provided with 4 vibration blocks (51).

5. The integrated screening and conveying machine according to claim 1, characterized in that: The tension pulley shaft includes a first tension pulley shaft (4), a second tension pulley shaft (8) and a third tension pulley shaft (6); the first tension pulley shaft (4) is close to the slave sprocket shaft (3), and the second tension pulley shaft (8) is close to the main sprocket shaft; the third tension pulley shaft (6) is arranged between the first tension pulley shaft (4) and the second tension pulley shaft (8), and is arranged at the lower end of the bracket (1), and is connected to the bracket (1) through a tension pulley mounting plate (61) and a tension pulley bracket (62).

6. The integrated screening and conveying machine according to claim 5, characterized in that: The tension pulley bracket (62) is fixed on the bracket (1), the third tension pulley is fixed on the tension pulley mounting plate (61), the tension pulley mounting plate (61) and the tension pulley bracket (62) are fixedly connected to the bracket (1), and spring mounting holes (63) are respectively arranged on the tension pulley mounting plate (61) and the tension pulley bracket (62).

7. The integrated screening and conveying machine according to claim 1, wherein: The first pressing block (14) is arranged in a rectangular structure with a concave bottom inward.

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