Feeding device and method for roller press with multi-point adjustable valve plate

Abstract

The invention provides a multi-point adjustable valve plate roller press feeding device which comprises a bracket, two sets of extension plates are symmetrically arranged on the lower portion of the bracket, and a feeding port is formed between the two sets of extension plates. The two sides, axially parallel to the rollers, of the feeding port are each provided with three feeding mechanisms, each feeding mechanism comprises a push rod and a valve plate, and the driving end of each push rod is installed on the bracket. The middle part of the valve plate is hinged with the extension plate; the two sides, parallel to the end faces of the rollers, of the feeding port are each provided with a set of side baffles, the upper portions of the side baffles are connected with the bracket, and end face clamping devices are arranged on the outer sides of the side baffles. According to the roller press feeding device and method with the multi-point adjustable valve plates, the three-section type valve plates are arranged in the axial direction of the roller, the opening degree of the three sets of opposite valve plates on the two sides of the axial direction of the roller is independently controlled through the push rod, the material amount of the middle part of the axial direction of the roller is independently adjusted, and the problem that materials in the axial direction of the roller are not evenly distributed is effectively solved; and the material distribution uniformity of the roller press is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of roller presses, and in particular relates to a valve plate multi-point adjustable roller press feeding device and method. Background Art

[0002] As an efficient material grinding equipment, roller presses have been widely used in cement and raw material grinding systems. Its working principle is to extrude materials through a pair of oppositely rotating rollers to achieve the purpose of crushing. As an important part of the roller press, the performance of the feeding device directly affects the grinding efficiency and stability of the roller press.

[0003] When the roller press is working normally, the materials in the feeding bin basically remain at 2 / 3 of the bin volume to ensure a continuous and stable material pressure between the feeding bin and the roller surface. Existing roller press feeding devices mainly adopt methods such as eccentric feeding, central feeding, inclined plug feeding, and hyperbolic feeding, and control the feeding amount of the roller press by controlling the opening of the valve plate. Due to the edge effect of the roller press, there is more material in the middle of the axial direction of the roller and less material at both ends. However, most of the existing feeding devices are designed with an integral valve plate and cannot separately adjust the amount of material in the axial direction of the roller, which affects the grinding efficiency and the stability of the roller press. Summary of the Invention

[0004] To solve the problems existing in the prior art, the present invention aims to propose a valve plate multi-point adjustable roller press feeding device and method, which solve the problem that most of the existing feeding devices are designed with an integral valve plate and cannot separately adjust the amount of material in the middle part of the axial direction of the roller.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] A valve plate multi-point adjustable roller press feeding device, the upper part of the feeding device is installed on the upper beam of the roller press, and the lower part is located between the two rollers of the roller press;

[0007] The feeding device includes a bracket, the bracket is installed on the upper beam of the roller press, two groups of inwardly inclined extension plates are symmetrically arranged at the lower part of the bracket, and a feeding port installed on the bracket is provided between the two groups of extension plates; three groups of feeding mechanisms are respectively arranged on both sides of the feeding port parallel to the axial direction of the roller, and the three groups of feeding mechanisms on each side are arranged along the axial direction of the roller; each group of feeding mechanisms includes a push rod and a valve plate, and the driving end of the push rod is installed on the bracket; the telescopic end of the push rod is hinged to the upper part of the valve plate located between the extension plate and the feeding port, the middle part of the valve plate is hinged to the extension plate, and the push rod telescoping adjusts the amount of material in the axial direction of the roller by the valve plate;

[0008] On both sides of the feed inlet parallel to the end face of the roller, a set of side baffles are respectively provided. The upper part of the side baffle is connected to the bracket, and an end face clamping device for adjusting the distance between the side baffle and the end face of the roller is provided on the outer side of the side baffle.

[0009] Furthermore, the bracket includes two longitudinals one arranged in parallel. On the outer side of each longitudinal one, a longitudinal two is respectively installed, and a push rod is installed on the longitudinal two; two crossbeams one are arranged at intervals between the two longitudinals one; two longitudinals three are arranged at intervals between the two crossbeams one, forming a frame for installing the feed inlet. Both sides of the feed inlet are respectively bolted to the two crossbeams one; on the outer side of each of the two crossbeams one, a crossbeam two installed on the longitudinal one is provided, and a side baffle is installed between the crossbeam two and the crossbeam one.

[0010] Furthermore, three material retaining plates are installed at the bottom of each group of the extension plates, and each material retaining plate corresponds to the corresponding valve plate.

[0011] Furthermore, the feed inlet is welded by composite steel plates.

[0012] Furthermore, the side baffle includes a base plate. On the upper part of one side of the base plate, an upper side plate is installed, a middle side plate is installed in the middle, and a lower side plate is installed at the lower part. Studs are inlaid on the lower side plate.

[0013] Furthermore, the end face clamping device includes an upper clamping assembly and a lower clamping assembly. The upper clamping assembly includes a clamping rod one, a sleeve one and a disc spring one. One end of the clamping rod one is installed in the sleeve one, and the other end sequentially passes through the sleeve one, the disc spring one, the side baffle and is connected to the crossbeam one; one end of the sleeve one is bolted to the outer side of the crossbeam two, and the other end installs the disc spring one. The end part of the disc spring one abuts against the side baffle;

[0014] The lower clamping assembly includes a clamping seat, a clamping rod two, a sleeve two and a disc spring two. The clamping seat is installed on the fixed roller of the roller press, and two clamping rods two are symmetrically installed on the clamping seat; one end of each clamping rod two is slidably installed in the sleeve two, and the other end sequentially passes through the sleeve two, the disc spring two and abuts against the side baffle; one end of the sleeve two is bolted to the clamping seat, and the other end installs the disc spring two. The end part of the disc spring two abuts against the nut on the clamping rod two.

[0015] Furthermore, the end of the clamping rod two abutting against the side baffle is arc-shaped.

[0016] Furthermore, the clamping rod two abuts against the side baffle, so that the distance between the side baffle and the end face of the roller is 5-10 mm.

[0017] Further, the feeding device further includes a protective cover installed on the bracket. The protective cover includes two first shells and two second shells arranged around the feeding port. The push rod passes through the first shell and is connected to the valve plate. Dust-proof sleeves are respectively arranged on both sides of the first shell and mounted on the push rod.

[0018] A feeding method for a valve plate multi-point adjustable roller press includes:

[0019] When the roller press starts to work, the feeding mechanisms on both sides of the feeding port are opened through the controller, and the working temperature of the roller surface is measured by an infrared thermometer. The telescoping of each push rod is controlled separately to make the openings between three groups of opposite valve plates on both axial sides of the roller different, eliminating the axial temperature deviation of the roller surface and making the materials on the roller axis uniform. Compared with the prior art, the feeding device and method for the valve plate multi-point adjustable roller press of the present invention have the following advantages:

[0020] (1) For the feeding device and method for the valve plate multi-point adjustable roller press of the present invention, a three-section valve plate is arranged axially on the roller. The openings between three groups of opposite valve plates on both axial sides of the roller are controlled separately by the push rod, and the material amount in the middle part of the roller axis is independently adjusted, accurately adjusting the material amounts on the left, middle, and right of the roller axis, effectively solving the problem of uneven material distribution on the roller axis and improving the uniformity of the material distribution of the roller press.

[0021] (2) For the feeding device of the valve plate multi-point adjustable roller press of the present invention, the actual service life of the assembled side baffle is better than that of the ordinary integral wear-resistant plate. The lower side plate adopts an inlaid stud structure with excellent wear resistance. After three months of stable operation, there is basically no wear during the shutdown inspection. Moreover, through the cooperation of the side baffle and the end face clamping device, the unilateral roll gap of the roller press is stable, the deviation of the roll gaps on both sides is constant, the roller press runs smoothly, and the output is increased by 5%. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is the overall structure schematic diagram provided by the embodiment of the present invention;

[0024] Figure 2 is the overall structure top view provided by the embodiment of the present invention;

[0025] Figure 3 is the protective cover structure schematic diagram provided by the embodiment of the present invention;

[0026] Figure 4 is the protective cover structure decomposition schematic diagram provided by the embodiment of the present invention;

[0027] Figure 5Schematic diagram of the feeding device and roller installation provided by the embodiment of the present invention (one side baffle removed);

[0028] Figure 6 Force analysis diagram of the valve plate lever provided by the embodiment of the present invention;

[0029] Figure 7 Schematic diagram of the bracket structure provided by the embodiment of the present invention;

[0030] Figure 8 Schematic diagram of the side baffle structure provided by the embodiment of the present invention;

[0031] Figure 9 Schematic diagram of the end face clamping device structure provided by the embodiment of the present invention;

[0032] Figure 10 Schematic cross-sectional view of the upper clamping assembly provided by the embodiment of the present invention;

[0033] Figure 11 Schematic cross-sectional view of the lower clamping assembly provided by the embodiment of the present invention;

[0034] Figure 12 Simulation software's simulation effect diagram of the actual working conditions of the single valve plate feeding device;

[0035] Figure 13 Simulation software's simulation effect diagram of the actual working conditions of the feeding device provided by the embodiment of the present invention.

[0036] Explanation of reference numerals:

[0037] 1. Bracket; 11. First longitudinal beam; 12. Second longitudinal beam; 13. First cross beam; 14. Third longitudinal beam; 15. Second cross beam; 16. Connecting rod; 2. Extension plate; 3. Feed inlet; 4. Feeding mechanism; 41. Push rod; 42. Valve plate; 5. Side baffle; 51. Base plate; 52. Upper side plate; 53. Middle side plate; 54. Lower side plate; 6. End face clamping device; 61. First clamping rod; 62. First sleeve; 63. First disc spring; 64. Clamping seat; 65. Second clamping rod; 651. Nut; 66. Second sleeve; 67. Second disc spring; 7. Roller; 8. Baffle; 9. Protective cover; 91. First housing; 92. Second housing; 93. Dust-proof sleeve; 94. Observation door; 95. Dust collection port; 96. Return ash port of the material stop valve. Detailed implementation manners

[0038] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and 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", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should 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; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0041] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0042] As Figures 1 to 12 shown, a valve plate multi-point adjustable roller press feeding device, the upper part of the feeding device is mounted on the upper beam of the roller press, and the lower part is located between two rollers 7 of the roller press;

[0043] The feeding device includes a bracket 1, the bracket 1 is mounted on the upper beam of the roller press, and two groups of inwardly inclined extension plates 2 are symmetrically arranged at the lower part of the bracket 1. An inlet 3 mounted on the bracket 1 is provided between the two groups of extension plates 2;

[0044] Three groups of feeding mechanisms 4 are respectively arranged on both sides of the inlet 3 parallel to the axial direction of the roller 7, and the three groups of feeding mechanisms 4 on each side are arranged along the axial direction of the roller 7; each group of the feeding mechanisms 4 includes a push rod 41 and a valve plate 42, and the driving end of the push rod 41 is mounted on the bracket 1; the telescopic end of the push rod 41 is hinged to the upper part of the valve plate 42 located between the extension plate 2 and the inlet 3, the middle part of the valve plate 42 is hinged to the extension plate 2, and the telescopic movement of the push rod 41 adjusts the amount of material in the axial direction of the roller 7 by the valve plate 42;

[0045] On both sides of the feed inlet 3 parallel to the end face of the roller 7, a set of side baffles 5 are respectively provided. The upper part of the side baffle 5 is connected to the bracket 1, and an end face clamping device 6 for adjusting the distance between the side baffle 5 and the roller end face is provided outside the side baffle 5.

[0046] For the valve plate multi-point adjustable roller press feeding device and method of the present invention, a three-section valve plate is arranged axially on the roller. The opening degree between three groups of relative valve plates on both sides of the roller axially is controlled separately by a push rod, and the material amount in the middle part of the roller axially is independently adjusted, accurately adjusting the material amounts on the left, middle, and right of the roller axis, effectively solving the problem of uneven material distribution on the roller axis and improving the uniformity of material distribution of the roller press.

[0047] During actual use, the valve plate 42 is of three-section type, and can separately and accurately adjust the materials in the left, middle, and right directions of the roller axis. Each section is respectively hinged to an electro-hydraulic push rod and an extension plate 2, and the hinge is a self-lubricating spherical plain bearing. The valve plate 42 is a simple lever mechanism.

[0048] As Figure 5 shown, according to the balance condition of the lever: F1xL1 = F2xL2

[0049] In the formula: F1 is the driving force; L1 is the driving force arm; F2 is the resistance; L2 is the resistance arm.

[0050] By adjusting the height of the bracket 1, the force provided by the push rod 41 is the driving force, ensuring that the resistance arm L2 is less than the driving force arm L1. The longer the driving force arm L1, the smaller the driving force required for the same type of feeding, and the more extensive the selection of the push rod 41.

[0051] In a preferred embodiment of the present invention, the bracket 1 includes two longitudinals 11 arranged in parallel. On the outside of each longitudinal 11, a longitudinal 12 is respectively installed, and the push rod 41 is installed on the longitudinal 12; two crossbeams 13 are arranged at intervals between the two longitudinals 11; two longitudinals 14 are arranged at intervals between the two crossbeams 13 to form a frame for installing the feed inlet 3, and both sides of the feed inlet 3 are bolted to the two crossbeams 13 respectively; on the outside of the two crossbeams 13, a crossbeam 15 installed on the longitudinal 11 is respectively provided, and the side baffle 5 is installed between the crossbeam 15 and the crossbeam 13.

[0052] During actual use, a longitudinal 12 is respectively installed on the outside of the two longitudinals 11 through a connecting rod 16. The bracket 1 is the foundation of the entire feeding device, used to support and fix each component of the feeding device. An installation seat for installing the push rod 41 is provided on the longitudinal 12, and the driving end of the push rod 41 is hinged to the installation seat. The longitudinals 14 are arranged at intervals between the crossbeams 13, and together with the crossbeams 13 form a frame for installing the feed inlet 3, ensuring the stable installation of the feed inlet 3 and the smooth flow of materials.

[0053] In a preferred embodiment of the present invention, three material baffle plates 8 are installed at the bottom of each group of the extension plates 2, and each of the material baffle plates 8 corresponds to the corresponding valve plate 42.

[0054] During actual use, the extension plate 2 is bolted to the material baffle plate 8. During the actual operation of the roller press, there will be a certain distance between the valve plate 42 and the roller surface, which inevitably results in a small amount of returned material. The movement direction of the returned material is opposite to the rotation direction of the roller, which will exacerbate the wear of the roller sleeve and reduce the service life of the roller sleeve. The main function of the material baffle plate 8 is to prevent or reduce the returned material. The material baffle plate 8 is divided into three sections. If a certain section of the material baffle plate 8 needs to be replaced due to wear or other reasons, it can be replaced individually without replacing the entire material baffle plate, greatly reducing the maintenance cost and downtime.

[0055] In a preferred embodiment of the present invention, the feed inlet 3 is welded by composite steel plates.

[0056] During actual use, the feed inlet 3 is composed of wear-resistant composite steel plates welded together and is fixed to the bracket 1 by bolts. During the long-term operation of the roller press, the feed inlet 3 will be worn, and the bolt fixation facilitates disassembly.

[0057] In a preferred embodiment of the present invention, the side baffle 5 includes a base plate 51. An upper side plate 52 is installed on the upper part of one side of the base plate 51, a middle side plate 53 is installed in the middle, and a lower side plate 54 is installed at the lower part. Studs are inlaid on the lower side plate 54.

[0058] During actual use, the base plate 51 of the side baffle 5 is fastened to the upper side plate 52, the middle side plate 53, and the lower side plate 54 by bolts. The upper side plate 52 and the middle side plate 53 are both made of composite wear-resistant plates, and the lower side plate 54 is a stud inlaid structure. The studs are made of cemented carbide studs. Only individual components need to be replaced in case of wear, saving the maintenance cost and extending the service life of the side baffle 5.

[0059] In a preferred embodiment of the present invention, the end face clamping device 6 includes an upper clamping assembly and a lower clamping assembly. The upper clamping assembly includes a clamping rod one 61, a sleeve one 62, and a disc spring one 63. One end of the clamping rod one 61 is installed in the sleeve one 62, and the other end sequentially passes through the sleeve one 62, the disc spring one 63, and the side baffle 5 and is connected to the cross beam one 13; one end of the sleeve one 62 is bolted to the outside of the cross beam two 15, and the other end installs the disc spring one 63. The end of the disc spring one 63 abuts against the side baffle 5;

[0060] The lower clamping assembly includes a clamping seat 64, a second clamping rod 65, a second sleeve 66 and a second disc spring 67. The clamping seat 64 is installed on the fixed roller of the roller press. Two second clamping rods 65 are symmetrically installed on the clamping seat 64. One end of each second clamping rod 65 is slidably installed in the second sleeve 66, and the other end sequentially passes through the second sleeve 66 and the second disc spring 67 and abuts against the side baffle 5. One end of the second sleeve 66 is bolted to the clamping seat 64, and the second disc spring 67 is installed at the other end. The end of the second disc spring 67 abuts against the nut 651 on the second clamping rod 65.

[0061] The end of the second clamping rod 65 that abuts against the side baffle 5 is arc-shaped.

[0062] The second clamping rod 65 abuts against the side baffle 5, so that the distance between the side baffle 5 and the end face of the roller 7 is 5-10 mm.

[0063] During actual use, the upper part of the side baffle 5 is installed between the first cross beam 13 and the second cross beam 15 through the upper clamping assembly, and the lower part is kept at a distance of 5-10 mm from the end face of the roller 7 through the lower clamping assembly. One end of the second sleeve 66 is bolted to the clamping seat 64, and the compression or relaxation of the second disc spring 67 is adjusted by bolts, so as to adjust the clamping force of the second clamping rod 65. When the side baffle 5 is subjected to a large force, with the cooperation of the nut 651 on the second clamping rod 65 and the second disc spring 67, the second disc spring 67 can be appropriately compressed, and the second clamping rod 65 extends out of the second sleeve 66 by a part, and a buffering effect is achieved through the second disc spring 67.

[0064] In a preferred embodiment of the present invention, the feeding device further includes a protective cover 9 installed on the bracket 1. The protective cover 9 includes two first shells 91 and two second shells 92 arranged around the feeding port 3. The push rod 41 passes through the first shell 91 and is connected to the valve plate 42. Dust-proof sleeves 93 installed on the push rod 41 are respectively arranged on both sides of the first shell 91.

[0065] During actual use, the protective cover is divided into four parts: two symmetrically arranged first shells 91 and two symmetrically arranged second shells 92. An observation door 94, a dust collection port 95 and a dust return port 96 for the stop valve are arranged on the first shell 91. Each part is connected by bolts. When removing the side baffle 5, only part of the protective cover needs to be removed, saving the shutdown maintenance time.

[0066] A feeding method for a valve plate multi-point adjustable roller press includes:

[0067] When the roller press starts to work, the feeding mechanisms 4 on both sides of the feeding port 3 are opened through the controller, the working temperature of the roller surface is measured by an infrared thermometer, and the telescoping of each push rod 41 is controlled separately so that the opening degrees between three groups of opposite valve plates 42 on both axial sides of the roller are different, eliminating the axial temperature deviation of the roller surface and making the axial material of the roller uniform.

[0068] The actual working conditions of the roller press feeding device are simulated by simulation software. For example, Figure 11 The single valve plate feeding device is shown. It can be seen from the simulation results that the material in the middle of the roller in the axial direction is more and less on both sides, and a single valve plate cannot effectively adjust the material in the axial direction of the roller. For example, Figure 12 As shown, by adjusting the opening degrees of the left, middle, and right valve plates differently in the axial direction of the roller, it can be obtained from the simulation results that the material in the axial direction of the roller is basically uniform.

[0069] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A valve plate multi-point adjustable roller press feeding device, wherein the upper part of the feeding device is mounted on the upper beam of the roller press, and the lower part is located between two rollers (7) of the roller press, characterized in that: The feeding device comprises a bracket (1), the bracket (1) is mounted on the upper beam of the roller press, two groups of inwardly inclined extension plates (2) are symmetrically arranged at the lower part of the bracket (1), and a feed port (3) mounted on the bracket (1) is arranged between the two groups of extension plates (2); three groups of feeding mechanisms (4) are respectively arranged on both sides of the feed port (3) parallel to the axial direction of the roller (7), and the three groups of feeding mechanisms (4) on each side are arranged along the axial direction of the roller (7); each group of the feeding mechanisms (4) comprises a push rod (41) and a valve plate (42), and the driving end of the push rod (41) is mounted on the bracket (1); the telescopic end of the push rod (41) is hinged to the upper part of the valve plate (42) located between the extension plate (2) and the feed port (3), and the middle part of the valve plate (42) is hinged to the extension plate (2), and the push rod (41) is telescopic so that the valve plate (42) adjusts the amount of material in the axial direction of the roller (7); A group of side baffles (5) are respectively provided on both sides of the feed port (3) parallel to the end faces of the roller (7); the upper part of the side baffles (5) is connected to the bracket (1); and the outer side of the side baffles (5) is provided with an end face clamping device (6) for adjusting the distance between the side baffles (5) and the end faces of the roller (7).

2. The valve plate multi-point adjustable roller press feeding device according to claim 1 is characterized in that: The bracket (1) comprises two longitudinal beams (11) arranged in parallel, a longitudinal beam (12) is respectively installed on the outer side of each longitudinal beam (11), and a push rod (41) is installed on the longitudinal beam (12); two cross beams (13) are arranged between the two longitudinal beams (11); two longitudinal beams (14) are arranged between the two cross beams (13) to form a frame for installing the feed port (3), and the two sides of the feed port (3) are respectively bolted to the two cross beams (13); a cross beam (15) installed on the longitudinal beam (11) is respectively arranged on the outer side of the two cross beams (13), and a side baffle (5) is installed between the cross beam (15) and the cross beam (13).

3. The valve plate multi-point adjustable roller press feeding device according to claim 1 is characterized in that: Three material baffle plates (8) are installed at the bottom of each group of extension plates (2), and each of the material baffle plates (8) corresponds to a corresponding valve plate (42).

4. The valve plate multi-point adjustable roller press feeding device according to claim 1 is characterized in that: The feed port (3) is formed by welding composite steel plates.

5. The valve plate multi-point adjustable roller press feeding device according to claim 1 is characterized in that: The side baffle (5) comprises a base plate (51), an upper side plate (52) is mounted on an upper portion of one side of the base plate (51), a middle side plate (53) is mounted in the middle portion, and a lower side plate (54) is mounted in the lower portion, and column nails are embedded in the lower side plate (54).

6. The valve plate multi-point adjustable roller press feeding device according to claim 1 is characterized in that: The end face clamping device (6) comprises an upper clamping assembly and a lower clamping assembly, wherein the upper clamping assembly comprises a clamping rod (61), a sleeve (62) and a disc spring (63), wherein one end of the clamping rod (61) is installed in the sleeve (62), and the other end passes through the sleeve (62), the disc spring (63), the side baffle (5) in sequence and is connected to the crossbeam (13); one end of the sleeve (62) is connected to the outer side of the crossbeam (15) by bolts, and the other end is installed with the disc spring (63), and the end of the disc spring (63) is in contact with the side baffle (5); The lower clamping assembly includes a clamping seat (64), a clamping rod (65), a sleeve (66) and a disc spring (67). The clamping seat (64) is installed on the fixed roller of the roller press. Two clamping rods (65) are symmetrically installed on the clamping seat (64); one end of each clamping rod (65) is slidably installed in the sleeve (66), and the other end passes through the sleeve (66) and the disc spring (67) in sequence to abut against the side baffle (5); one end of the sleeve (66) is bolted to the clamping seat (64), and the other end is installed with the disc spring (67), and the end of the disc spring (67) abuts against the nut (651) on the clamping rod (65).

7. The valve plate multi-point adjustable roller press feeding device according to claim 6 is characterized in that: The end of the second clamping rod (65) abutting against the side baffle (5) is in an arc shape.

8. The valve plate multi-point adjustable roller press feeding device according to claim 6, characterized in that: The second clamping rod (65) is in contact with the side baffle (5), so that the distance between the side baffle (5) and the end surface of the roller (7) is 5-10 mm.

9. The valve plate multi-point adjustable roller press feeding device according to claim 1, characterized in that: The feeding device also includes a protective cover (9) installed on the bracket (1), and the protective cover (9) includes two shells (91) and two shells (92) arranged around the feed port (3). The push rod (41) passes through the shell (91) and is connected to the valve plate (42). The push rod (41) is provided with a dust cover (93).

10. A feeding method for a roller press with a multi-point adjustable valve plate, characterized in that: include: When the roller press starts working, the feed mechanism (4) on both sides of the feed port (3) is opened by the controller, the working temperature of the roller surface is measured by the infrared thermometer, and the extension and contraction of each push rod (41) is individually controlled to make the openings of the three groups of opposite valve plates (42) on both sides of the roller axis different, thereby eliminating the temperature deviation of the roller surface and the roller axis, and making the material in the roller axis uniform.

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