Pressure self-regulating roller press for cement grinding

Abstract

This invention discloses a pressure self-regulating roller press for cement grinding, relating to the field of roller pressing equipment technology. It includes a machine body, a roller pressing mechanism, a feeding hopper, a first feeding mechanism, support rollers, support sleeves, and partitions. In this invention, material enters the feeding hopper, and some material falls onto the top of the outer wall of the partition on the outside of the support roller. The material first gathers on the partition, allowing for a primary receiving and diffusion motion. When the material is discharged under the oscillation of the partition, it undergoes a second diffusion motion, effectively ensuring the uniformity of material discharge into the roller pressing mechanism and preventing material from concentrating entirely in the center of the roller pressing mechanism. This effectively improves the utilization rate of the roller pressing area, thereby increasing work efficiency. The partitions on the outside of the two support rollers cooperate with each other, allowing the material falling onto the partitions to interact, effectively increasing the diversity of material discharge processing and improving the uniformity of material diffusion.

Description

Technical Field

[0001] This invention relates to the field of roller pressing equipment technology, specifically to a pressure self-regulating roller press for cement grinding. Background Technology

[0002] Roller presses, also known as extrusion mills, roller mills, or double-roll mills, are new types of energy-saving cement grinding equipment. They can replace the energy-intensive and inefficient ball mill pre-grinding system, reducing steel consumption and operating noise. Roller presses are widely used in the raw material and finished product grinding processes of industries such as cement, mining, and metallurgy. In the cement industry, roller presses are core grinding equipment, accounting for over 60% of applications, with demand mainly driven by energy-saving renovations and new production lines. Material is fed from above the two rollers and continuously drawn into the space between them by the extrusion rollers. Under high pressure of 100-150 MPa, it is transformed into a dense cake that is discharged from the bottom of the machine. The discharged cake, in addition to containing a certain proportion of fine finished product particles, has numerous cracks inside the non-finished particles, improving the grindability of the material. Furthermore, it can significantly reduce grinding energy consumption during further crushing.

[0003] Existing roller presses used for cement grinding typically feed material directly into the feed hopper, which then passes through the hopper into the roller pressing area. The material often accumulates at the center of the gap between the rollers, resulting in low utilization of the roller pressing area and reduced efficiency. Furthermore, some roller presses incorporate guiding components inside the feed hopper, but these generally only oscillate and push the material within the hopper, resulting in significant resistance and poor actual material diffusion.

[0004] For example, the aforementioned problem exists in patent (CN222446695U); it describes "a high-efficiency roller press grinding device, including a machine body and a material guiding device, wherein a pressure roller is arranged inside the machine body, a feed hopper is installed on the upper surface of the machine body, the feed hopper is located above the pressure roller, the material guiding device is located on the surface of the feed hopper, the material guiding device includes a partition plate, the partition plate is fixedly connected to the inner wall of the feed hopper, a guide plate is rotatably connected to the inner wall of the partition plate, a control rod is placed on the feed hopper, a groove is opened on one side of the guide plate, and one end of the control rod is inserted into the groove." One end of the control rod is fixedly connected to a limit block, and a positioning groove is provided on one side of the feed hopper. This utility model, through a guiding device, facilitates the separation and guidance of materials, reducing the probability of materials accumulating in the middle and causing slow feeding, thereby maximizing material processing efficiency and facilitating equipment production. The guiding device in the feed hopper of the roller press grinding device in the aforementioned patent only separates the material at the center of the feed hopper, dividing it into left and right parts and subjecting it to oscillation. However, the oscillation resistance is significant, resulting in poor actual material feeding and diffusion.

[0005] In response to the aforementioned issues with roller presses used for cement grinding, where material often accumulates at the center of the gap between the rollers upon entering the pressing area, resulting in low utilization of the pressing area and reduced work efficiency, and further issues with some systems that use guiding components inside the feed hopper to oscillate and push the material, the oscillation resistance is high, leading to poor actual material diffusion. Therefore, we propose a pressure-adjustable roller press for cement grinding. Summary of the Invention

[0006] The purpose of this invention is to provide a pressure self-regulating roller press for cement grinding, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a pressure self-adjusting roller press for cement grinding, comprising a machine body, a roller pressing mechanism horizontally arranged inside the machine body, a feeding hopper arranged above the roller pressing mechanism at the top of the machine body, a first feeding mechanism arranged inside the feeding hopper, the first feeding mechanism comprising two horizontally arranged support rollers, the support rollers being rotatably connected to the inner wall of the feeding hopper, a support sleeve being fitted on the outer wall of the support rollers, a plurality of partitions being provided on the outer wall of the support sleeve, and a torsion spring being provided between the support sleeve and the support rollers.

[0008] Furthermore, the partition plate is perpendicular to the support sleeve, and a material-pulling rod is provided at the end of the partition plate away from the support sleeve. The outer wall of the material-pulling rod is provided with spiral blades, and the end of the partition plate away from the support sleeve is provided with a movable groove that matches the spiral blades.

[0009] Furthermore, the support rollers are parallel to each other and the two support rollers are located on the same horizontal plane. The support rollers are parallel to the pressure rollers in the roller pressing mechanism, and the feeding rod is parallel to the pressure rollers.

[0010] Furthermore, the first feeding mechanism also includes a first geared motor, which is connected to a support roller in a transmission manner, and the other support roller is fixedly connected to the inner wall of the feed hopper.

[0011] Furthermore, it also includes a crushing mechanism, which includes a support frame. The top of the support frame is provided with a crushing chamber below the roller pressing mechanism. Inside the machine body, a second feeding mechanism is provided between the crushing chamber and the roller pressing mechanism.

[0012] Furthermore, the second feeding mechanism includes a first feeding plate and a second feeding plate, which are arranged in parallel. The first feeding plate and the second feeding plate are respectively located on both sides of the gap between the pressure rollers of the roller pressing mechanism, and both the first feeding plate and the second feeding plate are parallel to each other with the pressure rollers.

[0013] Furthermore, the second feeding mechanism also includes a swing assembly for the first feeding plate and the second feeding plate. The swing assembly includes two first connecting rods, with second connecting rods hinged to both ends of the first connecting rods. Both ends of the first feeding plate and the second feeding plate are respectively provided with fixing strips. The end of the second connecting rod away from the first connecting rod is fixedly connected to the fixing strip, and the end of the second connecting rod away from the first connecting rod is rotatably connected to the inner wall of the crushing chamber. A third connecting rod is hinged at the connection between the first connecting rod and the second connecting rod. The end of the third connecting rod away from the first connecting rod is eccentrically hinged to the outer wall of the turntable. The swing assembly also includes a rotation drive mechanism for the turntable.

[0014] Furthermore, the inner wall of the crushing chamber is provided with first crushing teeth on both sides, and a first crushing roller and a second crushing roller are rotatably arranged between the two sets of first crushing teeth inside the crushing chamber. The outer walls of the first crushing roller and the second crushing roller are respectively provided with second crushing teeth.

[0015] Furthermore, one end of the first crushing roller is connected to the second reduction motor via a universal coupling, and the first crushing roller and the second crushing roller are connected via a gear set.

[0016] Furthermore, a belt conveyor is horizontally provided on the inner side of the support frame, with one end of the belt conveyor located below the crushing chamber.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. This invention, by setting up a machine body, a roller pressing mechanism, a feeding hopper, a first feeding mechanism, a support roller, a support sleeve, and a partition, allows the first feeding mechanism to feed the material inside the feeding hopper. This ensures that the material is fed into the roller pressing mechanism's gap after being fed, effectively preventing the material from concentrating entirely in the center of the roller pressing mechanism and improving the utilization rate of the roller pressing area, thereby increasing work efficiency. As the material enters the feeding hopper, some falls onto the top of the outer wall of the partition outside the support roller. The material first gathers on the partition, allowing for a first receiving and diffusion motion. When the material is discharged under the swinging of the partition, it undergoes a second diffusion motion, effectively ensuring the material is properly distributed. The uniformity of material feeding into the roller pressing mechanism effectively prevents material from concentrating entirely in the center of the mechanism, thus improving the utilization rate of the roller pressing area and consequently increasing work efficiency. A first geared motor drives a support roller to rotate. This active rotation of the support roller allows the outer partition of the support roller to passively or actively feed the material. The other support roller does not rotate, and its outer partition passively feeds the material. The cooperation of the partitions on the outer sides of the two support rollers allows the material falling onto the partitions to interact, effectively increasing the diversity of material feeding and improving the uniformity of material diffusion.

[0018] 2. This invention, by setting a second feeding mechanism, also includes a swing assembly for the first feeding plate and the second feeding plate. When the swing assembly is working, the rotary drive mechanism can drive the turntable to rotate. The rotation of the turntable can drive one end of the third connecting rod to rotate. The other end of the third connecting rod can drive the first connecting rod to swing. The first connecting rod drives the second connecting rod to move. The second connecting rod and the fixing bar swing along their hinge point, so that the first feeding plate and the second feeding plate swing and adjust. The first feeding plate and the second feeding plate swing in parallel. The swinging motion of the first feeding plate and the second feeding plate can alternately receive the material from the gap between the pressure rollers of the roller pressing mechanism. The material falls downward along the inclined swinging first feeding plate and / or second feeding plate, so that the material falls alternately to both sides and the center inside the crushing chamber. This can effectively ensure the uniformity of the material entering the crushing chamber and can effectively improve the material processing effect. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a structural schematic diagram of the entire invention from another angle; Figure 3This is a schematic diagram of the feeding hopper and roller pressing mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the feeding hopper and roller pressing mechanism of the present invention after removing the top cover; Figure 5 This is a schematic diagram of the structure of the first feeding mechanism of the present invention; Figure 6 This is a schematic diagram of the structure of the first feeding mechanism, the crushing mechanism, the pressure roller, and the second feeding mechanism of the present invention; Figure 7 This is a schematic diagram of the structure of the pressure roller and the second feeding mechanism of the present invention; Figure 8 This is a schematic diagram of the structure of the second feeding mechanism of the present invention; Figure 9 This is a schematic diagram of the crushing mechanism of the present invention; Figure 10 This is a schematic diagram of the structure of the pulverizing teeth of the present invention; In the diagram: 1. Machine body; 2. Roller pressing mechanism; 201. Press roller; 3. Feed hopper; 4. First feeding mechanism; 401. Support roller; 402. Support sleeve; 403. Partition plate; 404. Movable groove; 405. Feeding rod; 406. Spiral blade; 5. Crushing mechanism; 501. Support frame; 502. Crushing chamber; 503. First crushing tooth; 504. First crushing roller; 505. Second crushing roller; 506. Second crushing tooth; 507. Universal coupling; 508. Second geared motor; 509. Gear set; 6. Second feeding mechanism; 601. First feeding plate; 602. Second feeding plate; 7. Swing assembly; 701. First connecting rod; 702. Second connecting rod; 703. Fixing strip; 704. Third connecting rod; 705. Turntable; 706. Rotary drive mechanism. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0021] Please see Figures 1-6This invention provides a technical solution: a pressure self-adjusting roller press for cement grinding, comprising a machine body 1, a roller pressing mechanism 2 horizontally arranged inside the machine body 1, a feeding hopper 3 located above the roller pressing mechanism 2 at the top of the machine body 1, a first feeding mechanism 4 located inside the feeding hopper 3, the first feeding mechanism 4 comprising two horizontally arranged support rollers 401, the support rollers 401 being rotatably connected to the inner wall of the feeding hopper 3, a support sleeve 402 sleeved on the outer wall of the support rollers 401, a plurality of partitions 403 on the outer wall of the support sleeve 402, and a torsion spring between the support sleeve 402 and the support rollers 401; the partitions 403 being perpendicular to the support sleeves 402, a feeding rod 405 being horizontally rotatably arranged at the end of the partitions 403 away from the support sleeves 402, a spiral blade 406 being arranged on the outer wall of the feeding rod 405, and a movable groove 404 matching the spiral blade 406 being arranged at the end of the partitions 403 away from the support sleeves 402; and further comprising a crushing mechanism 5, the crushing mechanism 5 comprising a support... A support frame 501 is provided, with a crushing chamber 502 located at the top of the support frame 501 below the roller pressing mechanism 2. A second feeding mechanism 6 is provided inside the machine body 1 between the crushing chamber 502 and the roller pressing mechanism 2. The second feeding mechanism 6 includes a first feeding plate 601 and a second feeding plate 602, arranged in parallel. The first feeding plate 601 and the second feeding plate 602 are respectively located on both sides of the gap between the pressure rollers of the roller pressing mechanism 2, and both are parallel to the pressure roller 201. Support rollers 401 are parallel to each other and located on the same horizontal plane. The support rollers 401 are parallel to the pressure rollers 201 in the roller pressing mechanism 2, and the feeding rod 405 is parallel to the pressure rollers 201. The first feeding mechanism 4 also includes a first reduction motor, which is connected to one support roller 401, and the other support roller 401 is fixedly connected to the inner wall of the feed hopper 3.

[0022] In one embodiment, a belt conveyor is horizontally provided on the inner side of the support frame 501. One end of the belt conveyor is located below the crushing chamber 502. The belt conveyor directly receives the material after roller pressing and crushing at the bottom outlet of the crushing chamber 502 and conveys the material outward, which can effectively ensure the normal delivery of the material.

[0023] Working principle of the invention: Refer to the instruction manual appendix Figures 1-6This invention comprises a machine body 1, a roller pressing mechanism 2, a feeding hopper 3, a first feeding mechanism 4, a support roller 401, a support sleeve 402, and a partition plate 403. The machine body 1 serves as the overall support frame of the equipment. The roller pressing mechanism 2 performs roller pressing on the material within the equipment. The feeding hopper 3 is used to feed and convey the material to the roller pressing mechanism 2. The first feeding mechanism 4 performs feeding on the material inside the feeding hopper 3, so that the material enters the roller pressing gap of the roller pressing mechanism 2 after being fed. This effectively avoids the material from being completely concentrated in the center of the roller pressing mechanism 2, which can effectively improve the utilization rate of the roller pressing area and thus improve work efficiency. In the first feeding mechanism 4, the support roller 401 provides rotational support to the support sleeve 402. A partition 403 supports the outer wall of the support sleeve 402, dividing the outer space of the support sleeve 402 into multiple spaces. A torsion spring provides elastic torsional support between the support roller 401 and the support sleeve 402. A first reduction motor drives the support roller 401, which, under the support of the first reduction motor, has a certain supporting force. Material enters the feed hopper 3, and some material falls onto the top of the outer wall of the partition 403 outside the support roller 401. The partition 403 supports the material under the elastic torsional support of the torsion spring. When the weight of the material exceeds the elastic torsional support force of the torsion spring, the partition 403... The moving support sleeve 402 swings downward, and the material on the partition 403 falls along the partition 403 into the gap between the rollers of the roller pressing mechanism 2. After the material is isolated by the partition 403, the material first gathers on the partition 403, which can carry out the material receiving and diffusion movement. After the material accumulation on the partition 403 reaches the set amount, the material on the partition 403 has undergone the receiving and diffusion process. When the material is discharged under the swing of the partition 403, the material will undergo a second diffusion movement during the swing discharge. This can effectively ensure the uniformity of the material entering the roller pressing mechanism 2, effectively prevent the material from being completely concentrated in the center of the roller pressing mechanism 2, effectively improve the working utilization rate of the roller pressing area, and thus improve the working efficiency. Another support roller 401 is fixed, and a torsion spring provides elastic torsional support between the support roller 401 and the support sleeve 402. Material enters the feed hopper 3, and some material falls onto the top of the outer wall of the partition 403 outside the support roller 401. The partition 403 supports the material under the elastic torsional support of the torsion spring. When the weight of the material exceeds the elastic torsional support force of the torsion spring, the partition 403 causes the support sleeve 402 to swing downwards. The material on the partition 403 falls along the partition 403 into the gap between the pressure rollers of the roller pressing mechanism 2. After the material undergoes a first separation process by the partition 403, the material first... The material is collected at point 3 and can undergo a first receiving and diffusion motion. After the material accumulation on the partition plate 403 reaches the set amount, the material on the partition plate 403 has undergone receiving and diffusion treatment. When the material is discharged under the swing of the partition plate 403, the material will undergo a second diffusion motion during the swing discharge, which can effectively ensure the uniformity of the material entering the roller pressing mechanism 2, effectively avoid the material being completely concentrated in the center of the roller pressing mechanism 2, effectively improve the working utilization rate of the roller pressing area, and thus improve the working efficiency; the support roller 401 at this point can perform self-adjusting movement under the action of material pressure under the elastic torsional support of the torsion spring. The first geared motor drives a support roller 401 to rotate. The active rotation of the support roller 401 driven by the first geared motor allows the partition plate 403 on the outer side of the support roller 401 to passively discharge materials or actively rotate and discharge materials. The other support roller 401 does not rotate, and the partition plate 403 on the outer side of this support roller 401 can passively discharge materials. The partition plates 403 on the outer sides of the two support rollers 401 cooperate with each other, so that the materials falling on the partition plate 403 can cooperate with each other, which can effectively improve the diversity of material discharge processing and effectively improve the uniformity of material diffusion. The feeding rod 405 and the spiral blade 406 rotate inside the movable groove 404. After the material falls to the top of the partition 403, it can pass through the spiral blade 406 and the feeding rod 405 from the inside of the movable groove 404 for feeding, which can effectively improve the uniformity of material feeding and diffusion. When the partition 403 feeds the material, the material is conveyed by the rotation of the spiral blade 406, which can further improve the uniformity of material feeding and diffusion. It can effectively prevent the material from being completely concentrated in the center of the roller pressing mechanism 2, which can effectively improve the utilization rate of the roller pressing area and thus improve work efficiency. The crushing mechanism 5 crushes the material below the roller pressing mechanism 2. The crushing chamber 502 receives the material. The second feeding mechanism 6 feeds the material a second time between the crushing chamber 502 and the roller pressing mechanism 2. This can effectively feed the material during the process of the material entering the crushing chamber 502, and can effectively improve the uniformity of the distribution and diffusion of the material inside the crushing chamber 502. The first feeding plate 601 and the second feeding plate 602 in the second feeding mechanism 6 can feed the material on both sides of the gap between the rollers of the roller pressing mechanism 2, so that the material enters the inside of the crushing chamber 502 on both sides respectively. The overall structure of the machine body 1, the overall structure of the roller pressing mechanism 2, and the first reduction motor in this invention all adopt existing mature structures. Their transmission principle, sealing structure, and control method can all adopt existing mature conventional structural components and conventional control technology. The above content is common knowledge in the field and is not an improvement of this invention. Therefore, it has not been explained in detail. Example 2

[0024] Please see Figures 6-10 The present invention provides a technical solution: a pressure self-adjusting roller press for cement grinding, wherein the second feeding mechanism 6 further includes a swing assembly 7 of a first feeding plate 601 and a second feeding plate 602, the swing assembly 7 including two first connecting rods 701, the two ends of the first connecting rods 701 being respectively hinged to the second connecting rods 702, both ends of the first feeding plate 601 and the second feeding plate 602 being respectively provided with fixing strips 703, the end of the second connecting rod 702 away from the first connecting rod 701 being fixedly connected to the fixing strips 703, and the end of the second connecting rod 702 away from the first connecting rod 701 being rotatably connected to the inner wall of the crushing chamber 502, a third connecting rod 704 being hinged at the connection between the first connecting rod 701 and the second connecting rod 702, the end of the third connecting rod 704 away from the first connecting rod 701 being eccentrically hinged to the outer wall of the turntable 705, and the swing assembly 7 further including a rotation drive mechanism 706 for the turntable 705.

[0025] In one embodiment, the inner walls of the crushing chamber 502 are respectively provided with first crushing teeth 503 on both sides. Inside the crushing chamber 502, a first crushing roller 504 and a second crushing roller 505 are rotatably arranged between the two sets of first crushing teeth 503. The outer walls of the first crushing roller 504 and the second crushing roller 505 are respectively provided with second crushing teeth 506. One end of the first crushing roller 504 is connected to the second reduction motor 508 through a universal coupling 507. The first crushing roller 504 and the second crushing roller 505 are connected through a gear set 509. The second reduction motor 508 can drive the first crushing roller 504 to rotate through the universal coupling 507. The first crushing roller 504 drives the second crushing roller 505 to rotate through the gear set 509, which can effectively drive the second crushing teeth 506 to rotate. The first crushing teeth 503 and the second crushing teeth 506 cooperate with each other to effectively ensure the crushing effect of the material. The dustproof and lubricating components on the outside of the gear set 509 can be simply assembled according to conventional existing equipment.

[0026] Working principle of the invention: Refer to the attached diagram in the instruction manual. Figures 6-10 The present invention further includes a swing assembly 7 for a first material feeding plate 601 and a second material feeding plate 602 by setting a second material feeding mechanism 6. The two ends of the first connecting rod 701 in the swing assembly 7 provide hinge support for the two second connecting rods 702. The fixing bar 703 supports the first material feeding plate 601 and the second material feeding plate 602. The third connecting rod 704 supports the first connecting rod 701. The turntable 705 provides eccentric rotational support for the third connecting rod 704. When the oscillating assembly 7 is working, the rotary drive mechanism 706 can drive the turntable 705 to rotate. The rotation of the turntable 705 can drive one end of the third connecting rod 704 to rotate. The other end of the third connecting rod 704 can drive the first connecting rod 701 to oscillate. The first connecting rod 701 drives the second connecting rod 702 to move. The second connecting rod 702 and the fixing bar 703 oscillate along their hinge point, so that the first feeding plate 601 and the second feeding plate 602 can oscillate and adjust. The first feeding plate 601 and the second feeding plate 602 oscillate in parallel. The oscillation of the first feeding plate 601 and the second feeding plate 602 can alternately receive the material that is fed from the gap between the pressure rollers of the roller pressing mechanism 2. The material falls down along the inclined oscillating first feeding plate 601 and / or second feeding plate 602, so that the material falls alternately to the sides and center of the crushing chamber 502. This can effectively ensure the uniformity of the material entering the crushing chamber 502 and effectively improve the processing effect of the material. The rotary drive mechanism 706 and the hinge structure in this invention both adopt existing mature structures. Their transmission principle, sealing structure and control method can all adopt existing mature conventional structural components and conventional control technology. The above content is common knowledge in the field and is not an improvement of this invention. Therefore, it has not been explained in detail.

[0027] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure self-regulating roller press for cement grinding, comprising a machine body (1), characterized in that: The machine body (1) is horizontally provided with a roller pressing mechanism (2). The top of the machine body (1) is provided with a feeding hopper (3) above the roller pressing mechanism (2). The feeding hopper (3) is provided with a first feeding mechanism (4). The first feeding mechanism (4) includes two horizontally arranged support rollers (401). The support rollers (401) are rotatably connected to the inner wall of the feeding hopper (3). The outer wall of the support rollers (401) is fitted with a support sleeve (402). The outer wall of the support sleeve (402) is provided with several partitions (403). A torsion spring is provided between the support sleeve (402) and the support rollers (401).

2. The pressure self-regulating roller press for cement grinding according to claim 1, characterized in that: The partition (403) is perpendicular to the support sleeve (402). The partition (403) is horizontally rotatably provided with a feeding rod (405) at the end away from the support sleeve (402). The feeding rod (405) has a spiral blade (406) on its outer wall. The partition (403) is provided with a movable groove (404) that matches the spiral blade (406) at the end away from the support sleeve (402).

3. A pressure self-regulating roller press for cement grinding according to claim 2, characterized in that: The support rollers (401) are parallel to each other, and the two support rollers (401) are set on the same horizontal plane. The support rollers (401) are parallel to the pressure rollers (201) in the roller pressing mechanism (2). The material feeding rod (405) is parallel to the pressure rollers (201).

4. A pressure self-regulating roller press for cement grinding according to claim 2, characterized in that: The first feeding mechanism (4) also includes a first geared motor, which is connected to a support roller (401) for transmission, and the other support roller (401) is fixedly connected to the inner wall of the feed hopper (3).

5. A pressure self-regulating roller press for cement grinding according to claim 1, characterized in that: It also includes a crushing mechanism (5), which includes a support frame (501). The top of the support frame (501) is provided with a crushing chamber (502) below the roller pressing mechanism (2). Inside the machine body (1), a second feeding mechanism (6) is provided between the crushing chamber (502) and the roller pressing mechanism (2).

6. A pressure self-regulating roller press for cement grinding according to claim 5, characterized in that: The second feeding mechanism (6) includes a first feeding plate (601) and a second feeding plate (602). The first feeding plate (601) and the second feeding plate (602) are arranged in parallel. The first feeding plate (601) and the second feeding plate (602) are respectively located on both sides of the gap between the pressure rollers of the roller pressing mechanism (2). The first feeding plate (601) and the second feeding plate (602) are both parallel to the pressure roller (201).

7. A pressure self-regulating roller press for cement grinding according to claim 6, characterized in that: The second feeding mechanism (6) further includes a swing assembly (7) for the first feeding plate (601) and the second feeding plate (602). The swing assembly (7) includes two first connecting rods (701), with the second connecting rods (702) hinged to both ends of the first connecting rods (701). The first feeding plate (601) and the second feeding plate (602) are each provided with a fixing strip (703) at both ends. The end of the second connecting rod (702) away from the first connecting rod (701) is connected to the fixing strip. (703) Fixed connection, and the end of the second connecting rod (702) away from the first connecting rod (701) is rotatably connected to the inner wall of the crushing chamber (502). A third connecting rod (704) is hinged at the connection between the first connecting rod (701) and the second connecting rod (702). The end of the third connecting rod (704) away from the first connecting rod (701) is eccentrically hinged to the outer wall of the turntable (705). The swing assembly (7) also includes a rotation drive mechanism (706) for the turntable (705).

8. A pressure self-regulating roller press for cement grinding according to claim 5, characterized in that: The inner walls of the crushing chamber (502) are respectively provided with first crushing teeth (503). Inside the crushing chamber (502), a first crushing roller (504) and a second crushing roller (505) are rotatably arranged between the two sets of first crushing teeth (503). The outer walls of the first crushing roller (504) and the second crushing roller (505) are respectively provided with second crushing teeth (506).

9. A pressure self-regulating roller press for cement grinding according to claim 8, characterized in that: One end of the first crushing roller (504) is connected to the second geared motor (508) via a universal coupling (507), and the first crushing roller (504) and the second crushing roller (505) are connected via a gear set (509).

10. A pressure self-regulating roller press for cement grinding according to claim 5, characterized in that: The inner side of the support frame (501) is provided with a belt conveyor, one end of which is located below the crushing chamber (502).

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