A dry strength agent preparation device for a papermaking wet end system stability enhancement research

Abstract

This invention relates to the field of papermaking equipment technology and relates to a dry strength agent preparation device for enhancing the stability of wet-end systems in papermaking. The device comprises a frame fixedly mounted on an external base, a support shaft fixedly mounted on a support frame and spun onto the frame via bearings, a material cylinder located inside the support frame, several heating plates fixedly mounted on the inner wall of the material cylinder at equal angles, and a stirring mechanism located inside the material cylinder. By designing a movable lifting and stirring structure within the material cylinder, a heating device for the material, and a horizontally adjustable support structure and a rotary drive structure for the material cylinder, the device achieves integrated stirring, mixing, and heating of the material, thereby improving material processing efficiency. This invention relates to the field of papermaking equipment technology and relates to a dry strength agent preparation device for enhancing the stability of wet-end systems in papermaking. The device comprises a frame fixedly mounted on an external base, a support shaft fixedly mounted on a support frame and spun onto the frame via bearings, a material cylinder located inside the support frame, several heating plates fixedly mounted on the inner wall of the material cylinder at equal angles, and a stirring mechanism located inside the material cylinder. By designing a movable lifting and stirring structure within the material cylinder, a heating device for the material, and a horizontally adjustable support structure and a rotary drive structure for the material cylinder, the device achieves integrated stirring, mixing, and heating of the material, thereby improving material processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of papermaking equipment technology, and specifically to a dry strength agent preparation device for research on enhancing the stability of wet-end papermaking systems. Background Technology

[0002] Paper dry strength agents are additives added to raw material fiber pulp to modify the raw materials and enhance the performance of finished paper. Existing biomass dry strength agents typically use starch as a raw material, which is produced by adding auxiliary materials and conducting a high-temperature chemical reaction. The production process is divided into dry process and wet process. For the preparation of dry strength agents, after adding auxiliary materials, it is necessary to mix and crush them thoroughly, and then heat and keep them warm in a calcining furnace to ensure that the raw materials react fully. In actual production, it is necessary to first use a stirring device to fully stir the materials, and then transfer the materials to the heating furnace for heating. This production process involves the transfer of raw materials, making the production process cumbersome and requiring equipment improvement. Summary of the Invention

[0003] The purpose of this invention is to address the deficiencies and shortcomings of existing technologies by providing a dry strength agent preparation device for research on enhancing the stability of wet-end systems in papermaking. This device incorporates a movable lifting and stirring structure placed inside a material cylinder, a heating device for the material, and a horizontal adjustable support structure and a rotary drive structure for the material cylinder. This achieves integrated stirring, mixing, and heating reaction of the material, thereby improving material processing efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions: It includes a frame and a support frame, wherein the frame is fixedly mounted on an external base, and a support shaft is fixedly mounted on the support frame and screwed onto the frame via bearings. It also includes: A material cylinder, wherein the material cylinder is disposed inside the support frame; The heating plates are multiple and fixedly arranged on the inner wall of the material cylinder, and the heating plates are distributed at equal angles. A stirring mechanism is located inside the material cylinder.

[0005] Preferably, a tilting motor is fixedly mounted on the frame, a worm is fixedly mounted on the output shaft of the tilting motor, and a worm wheel is fixedly mounted on the support shaft, with the worm and worm wheel meshing with each other.

[0006] Preferably, an upper cover plate is fixedly installed on the support frame, and the upper cover plate is screwed into the upper port of the material cylinder through a bearing. The upper cover plate has upper and lower material ports. A lower cover plate is fixedly installed on the support frame, and the lower cover plate is screwed into the lower port of the material cylinder through a bearing.

[0007] Preferably, a main pulley is fixedly fitted onto the material cylinder, and a secondary pulley is spun onto the support frame via a rotating shaft. The main pulley and the secondary pulley are connected by a transmission belt. A drive motor is fixedly mounted on the support frame, and the output shaft of the drive motor is connected to the shaft end of the secondary pulley.

[0008] Preferably, the stirring mechanism comprises: The spline shaft is inserted into the barrel, and the lower end of the spline shaft is screwed onto the lower cover plate through a bearing. The stirring motor is fixedly mounted on the support frame, and the output shaft of the stirring motor is connected to the lower end of the splined shaft via a shaft drive. Lower spline sleeve, wherein the lower spline sleeve is movably sleeved on the spline shaft; The lower dispersing disc is sleeved and fixed on the lower spline sleeve; The upper dispersion disk is movably sleeved on the splined shaft and is positioned above the lower dispersion disk.

[0009] Preferably, an upper spline sleeve is movably fitted on the spline shaft, a lifting frame is spun onto the upper spline sleeve via a bearing, a connecting sleeve is movably fitted on the spline shaft and positioned below the upper spline sleeve, an upper dispersion disc is fitted with the connecting sleeve, a housing is fixedly mounted on the lifting frame, a connecting frame is fixedly mounted at the lower end of the housing and spun onto the connecting sleeve via a bearing, a transmission bevel gear is spun onto the inner wall of the housing via a rotating shaft, a main bevel gear is fitted and fixedly mounted on the upper spline sleeve and meshes with the transmission bevel gear, and a secondary bevel gear is fitted and fixedly mounted on the connecting sleeve and meshes with the transmission bevel gear.

[0010] Preferably, the lower end of the connecting sleeve is fixedly provided with a connecting seat, and the connecting seat is movably sleeved on the outside of the spline shaft. A sealing seat is embedded in the connecting seat and screwed on by a bearing. The sealing seat is sleeved on the spline shaft and is configured to cooperate with the keyway of the spline shaft. The upper dispersion disc is sleeved and fixed on the connecting seat.

[0011] Preferably, a mounting frame is fixedly installed on the upper cover plate, and an array of transmission frames is provided between the mounting frame and the lifting frame. Each set of transmission frames consists of two frames that are cross-rotated by a rotating shaft. The adjacent ends of two sets of transmission frames are connected by a rotating shaft. A support rod is fixedly installed on the mounting frame. A support sleeve is screwed onto the movable end of the uppermost set of transmission frames by a rotating shaft, and the support sleeve is movably fitted onto the support rod. A guide rod is fixedly installed on the lifting frame. A guide sleeve is screwed onto the movable end of the lowermost set of transmission frames by a rotating shaft, and the guide sleeve is movably fitted onto the guide rod. A guide frame is movably inserted through the upper cover plate, and the lower end of the guide frame is screwed onto the cross-rotation shaft of a set of transmission frames by a bearing. An electric lead screw pair is fixedly installed on the support frame, and the top plate of the guide frame is screwed onto the lead screw end of the electric lead screw pair by a threaded connection.

[0012] Preferably, the lower spline sleeve is fitted with an adjusting bracket via a bearing screw connection, and a bolt is movably inserted through the connecting bracket, with the screw end of the bolt threadedly inserted through the adjusting bracket.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This solution involves setting an upper cover plate and a lower cover plate on a support frame, then screwing a material cylinder on it, and setting an upper dispersion plate and a lower dispersion plate that can move up and down inside the material cylinder, as well as installing a heating plate on the inner wall of the material cylinder, thereby achieving uniform mixing of the material and heating reaction of the material, thus realizing the dry preparation of dry strength agent. 2. This solution achieves the driving of the lower dispersion disk through the cooperation between the lower spline sleeve and the spline shaft, and drives the upper dispersion disk to rotate through the transmission cooperation between the upper spline sleeve and the connecting sleeve, thereby realizing the rotation of the upper and lower dispersion disks. 3. This solution sets up an installation frame on the upper cover plate, and realizes the cooperation between the installation frame and the lifting frame through the transmission frame. The guide frame driven by the electric screw pair realizes the drive of the transmission frame, thereby realizing the movement control of the lifting frame. The connecting frame and the adjusting frame are adjusted and connected by bolts, thereby realizing the lifting drive of the upper and lower dispersing plates. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the support frame and stirring mechanism in this invention.

[0016] Figure 3 This is a schematic diagram of the structure of the material cylinder and heating plate in this invention.

[0017] Figure 4 This is a structural schematic diagram of the stirring mechanism, transmission frame, and lifting frame in this invention.

[0018] Figure 5 This is a structural schematic diagram of the lifting frame, connecting frame, and adjusting frame in this invention.

[0019] Figure 6 yes Figure 5 The bottom side view.

[0020] Figure 7 This is a schematic diagram of the structure of the connecting seat, the upper dispersion plate, and the sealing seat in this invention.

[0021] Figure 8 This is a schematic diagram of the main bevel gear, transmission bevel gear, and auxiliary bevel gear in this invention.

[0022] Explanation of reference numerals in the attached figures: Frame 1, Support frame 2, Support shaft 3, Material cylinder 4, Heating plate 5, Stirring mechanism 6, Splined shaft 6-1, Stirring motor 6-2, Lower splined sleeve 6-3, Lower dispersing disc 6-4, Upper dispersing disc 6-5, Tilting motor 7, Worm 8, Worm wheel 9, Upper cover plate 10, Lower cover plate 11, Main pulley 12, Auxiliary pulley 13, Drive motor 14, Upper splined sleeve 15, Lifting frame 16, Connecting sleeve 17, Machine housing 18, Connecting frame 19, Transmission bevel gear 20, Main bevel gear 21, Auxiliary bevel gear 22, Connecting seat 23, Sealing seat 24, Mounting frame 25, Transmission frame 26, Support rod 27, Support sleeve 28, Guide rod 29, Guide sleeve 30, Guide frame 31, Electric lead screw pair 32, Adjusting frame 33, Bolt 34. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figure 1-8 As shown, the specific implementation adopts the following technical solution: This specific embodiment includes a frame 1 and a support frame 2, wherein the frame 1 is disposed outside the support frame 2, a support shaft 3 is fixedly disposed on the support frame 2, the support shaft 3 is spun onto the frame 1 through bearings, a worm gear 9 is sleeved and fixed on the support shaft 3, a reversing motor 7 is fixedly disposed on the frame 1, a worm 8 is fixedly disposed on the output shaft of the reversing motor 7, and the worm 8 and the worm gear 9 are meshed with each other. A top cover plate 10 is fixedly installed at the upper end of the support frame 2, and a bottom cover plate 11 is fixedly installed at the lower end of the support frame 2. A material cylinder 4 is arranged between the top cover plate 10 and the bottom cover plate 11. The top cover plate 10 and the bottom cover plate 11 are respectively screwed into the upper and lower ports of the material cylinder 4 through bearings. The top cover plate 10 has upper and lower material ports. Several heating plates 5 are fixedly arranged at equal angles on the inner wall of the material cylinder 4. The heating plates 5 are electrically connected to an external control unit. A main pulley 12 is sleeved and fixed on the material cylinder 4. A secondary pulley 13 is screwed onto the support frame 2 through a rotating shaft. A drive motor 14 is fixedly installed on the support frame 2. The output shaft of the drive motor 14 is connected to the shaft end of the secondary pulley 13. The main pulley 12 and the secondary pulley 13 are connected by a drive belt. A stirring mechanism 6 is arranged inside the material cylinder 4. The stirring mechanism 6 includes a splined shaft 6-1, a lower dispersing disc 6-4, and an upper dispersing disc 6-5. The splined shaft 6-1 passes through the material cylinder 4, and the lower end of the splined shaft 6-1 is screwed onto the lower cover plate 11 via a bearing. A mounting bracket 25 is fixedly installed on the lower side wall of the upper cover plate 10, and the upper end of the splined shaft 6-1 is screwed onto the mounting bracket 25 via a bearing. A stirring motor 6-2 is fixedly installed on the support frame 2, and the output shaft of the stirring motor 6-2 is connected to the lower end of the splined shaft 6-1 via a transmission connection. A lower splined sleeve 6-3 is movably sleeved on the splined shaft 6-1, and the lower dispersing disc 6-4 is sleeved and fixed on the lower splined sleeve 6-3. The upper dispersing disc 6-5 is located above the lower dispersing disc 6-4. An upper spline sleeve 15 is movably fitted onto the spline shaft 6-1. A lifting frame 16 is screwed onto the upper spline sleeve 15 via bearings. A housing 18 is fixedly mounted on the lifting frame 16 and is fitted onto the outside of the spline shaft 6-1. A connecting sleeve 17 is fitted onto the spline shaft 6-1. The connecting sleeve 17 has an inner diameter larger than the shaft diameter of the spline shaft 6-1. A connecting bracket 19 is screwed onto the connecting sleeve 17 via bearings and is fixedly mounted at the lower end of the housing 18. A connecting seat 23 is fixedly mounted through the connecting sleeve 17 and is fitted onto the outside of the spline shaft 6-1. An upper dispersion disc 6-5 is fitted and fixed onto the connecting seat 23. A sealing seat 24 is screwed onto the connecting seat 23 via bearings and is fitted onto the spline shaft 6-1. The sealing seat 24 is configured to engage with the keyway on the spline shaft 6-1 via a spline. A drive bevel gear 20 is screwed onto the inner wall of the housing 18 via a rotating shaft. A main bevel gear 21 is fixedly fitted onto the upper spline sleeve 15, and the main bevel gear 21 and the drive bevel gear 20 are meshed with each other. A secondary bevel gear 22 is fixedly fitted onto the connecting sleeve 17, and the secondary bevel gear 22 and the drive bevel gear 20 are meshed with each other. An adjusting frame 33 is screwed onto the lower spline sleeve 6-3 via a bearing. A bolt 34 is movably inserted onto the connecting frame 19, and the lower end of the bolt 34 is screwed onto the adjusting frame 33 via a thread. A threaded sleeve is fixedly fitted onto the upper wall of the lower cover plate 11. An array of transmission frames 26 is provided between the mounting frame 25 and the lifting frame 16. Each set of transmission frames 26 consists of two frames that are crisscrossed by a rotating shaft. The adjacent ends of two sets of transmission frames 26 are connected by a rotating shaft. A support rod 27 is fixedly installed on the lower side wall of the upper cover plate 10. A support sleeve 28 is spun onto the movable end of the uppermost set of transmission frames 26 by a rotating shaft, and the support sleeve 28 is movably fitted onto the support rod 27. A guide rod 29 is fixedly installed on the upper side wall of the lifting frame 16. A guide sleeve 30 is spun onto the movable end of the lowermost set of transmission frames 26 by a rotating shaft, and the guide sleeve 30 is movably fitted onto the guide rod 29. A guide frame 31 is movably inserted through the upper cover plate 10, and the lower end of the guide frame 31 is spun onto the crisscrossing shaft of one set of transmission frames 26 by a bearing. An electric lead screw pair 32 is fixedly installed on the support frame 2, and the top plate of the guide frame 31 is threadedly fitted onto the lead screw end of the electric lead screw pair 32.

[0025] When using this device, the support frame 2 is erected so that the upper cover plate 10 is above the material cylinder 4. Raw materials are added into the material cylinder 4 through the upper and lower feed ports of the upper cover plate 10. After adding, the upper and lower feed ports of the upper cover plate 10 are closed. Then, the stirring motor 6-2 drives the spline shaft 6-1 to rotate forward. The spline shaft 6-1 then drives the lower dispersing disc 6-4 to rotate forward through the lower spline sleeve 6-3. The spline shaft 6-1 drives the upper spline sleeve 15 to rotate forward, which in turn drives the main bevel gear 21 to rotate forward. The main bevel gear 21 drives the secondary bevel gear 22 to rotate in the opposite direction through the transmission bevel gear 20. The secondary bevel gear 22 then drives the connecting sleeve 17 to rotate in the opposite direction. The connecting sleeve 17 then drives the upper dispersing disc 6-5 to rotate in the opposite direction. The forward-rotating lower dispersing disc 6-4 and the... The counter-rotating upper dispersing discs 6-5 work together to achieve high-speed and uniform mixing of materials. The electric screw pair 32 drives the guide frame 31 to move up and down, sliding it on the upper cover plate 10. This, in turn, drives a set of connected transmission frames 26 to move up and down. The support rod 27 and support sleeve 28 provide limiting guidance for the uppermost set of transmission frames 26, while the guide rod 29 and guide sleeve 30 provide limiting guidance for the lowermost set of transmission frames 26. The spline shaft 6-1 and upper spline sleeve 15 provide limiting guidance for the lifting frame 16. Thus, the up-and-down movement of the guide frame 31 pushes the transmission frames 26, and the scissor structure between the transmission frames 26 pushes the lifting frame. The lifting frame 16 moves up and down. The lifting frame 16, through the housing 18, drives the connecting frame 19, which in turn drives the connecting sleeve 17 and the connecting seat 23, thereby causing the upper dispersing disc 6-5 to move up and down on the splined shaft 6-1. The connecting frame 19, through bolts 34, drives the adjusting frame 33, which in turn drives the lower splined sleeve 6-3 and the lower dispersing disc 6-4 to follow the connecting frame 19 in moving up and down. This achieves synchronous up and down movement of the upper and lower dispersing discs 6-5 and 6-4, enabling uniform mixing of materials at different depths within the material cylinder 4. When adjusting the distance between the upper and lower dispersing discs 6-5 and 6-4, the bolts 34 are rotated to adjust their insertion length into the section frame 33, thereby adjusting the distance between the connecting frame 19 and the adjusting frame 33. The limiting distance between the sections 33 allows for adjustment of the spacing between the upper dispersion disc 6-5 and the lower dispersion disc 6-4. When heating the stirred material, the worm gear 8 is rotated by the flip motor 7, which in turn drives the support shaft 3 to rotate via the meshing worm wheel 9. The support shaft 3 then flattens the support frame 2, which in turn flattens the material cylinder 4. The drive motor 14 drives the main pulley 12 to rotate, which in turn drives the auxiliary pulley 13 to rotate via the transmission belt, thus rotating the material cylinder 4. The material cylinder 4 then stirs the material inside and ensures that the material fully contacts the heating plate 5 for heating. After the material processing is completed, the material cylinder 4 is rotated and inverted so that the upper cover plate 10 is located below the material cylinder 4, allowing the finished material to be discharged through the upper and lower material inlets.

[0026] Compared with the prior art, the beneficial effects of the present invention are: 1. This device supports the material cylinder 4 by fixing the upper cover plate 10 and the lower cover plate 11 on the support frame 2, so that the material cylinder 4 can rotate. Then, the upper dispersion plate 6-5 and the lower dispersion plate 6-4 are set inside the material cylinder 4 to stir the material evenly, and the heating plate 5 is set on the inner wall of the material cylinder 4 to carry out the calcination chemical reaction of the material, thereby realizing the experimental preparation of dry-method dry strength agent. 2. This device controls the lifting and lowering movement of the lifting frame 16 through the transmission frame 26 of the scissor structure, thereby controlling the up and down movement of the upper dispersing plate 6-5. The connecting frame 19 and the adjusting frame 33 are connected through the bolt 34, thereby realizing the synchronous lifting and lowering movement of the upper dispersing plate 6-5 and the lower dispersing plate 6-4. The working distance between the upper dispersing plate 6-5 and the lower dispersing plate 6-4 can be adjusted through the adjustment of the bolt 34. 3. This device drives the lower dispersing disc 6-4 to rotate only through the cooperation between the spline shaft 6-1 and the lower spline sleeve 6-3. The transmission between the upper spline sleeve 15 and the connecting sleeve 17 is achieved through the transmission bevel gear 20, thereby driving the upper dispersing disc 6-5 to rotate in the opposite direction. Thus, the upper dispersing disc 6-5 and the lower dispersing disc 6-4 rotate in opposite directions, achieving uniform mixing of materials.

[0027] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A dry strength agent preparation device for studying the stability enhancement of a papermaking wet-end system, comprising a frame (1) and a support frame (2), wherein the frame (1) is fixedly mounted on an external base, and a support shaft (3) is fixedly mounted on the support frame (2), and the support shaft (3) is spun onto the frame (1) via bearings; characterized in that, It also includes: The material cylinder (4) is disposed inside the support frame (2); Heating plate (5), there are several heating plates (5) and they are fixedly arranged on the inner wall of the material cylinder (4), and the heating plates (5) are arranged at equal angles; The stirring mechanism (6) is located inside the material cylinder (4).

2. The dry strength agent preparation device for the study of enhancing the stability of a papermaking wet-end system according to claim 1, characterized in that: A rotating motor (7) is fixedly installed on the frame (1), a worm (8) is fixedly installed on the output shaft of the rotating motor (7), and a worm wheel (9) is sleeved and fixed on the support shaft (3). The worm (8) and the worm wheel (9) are meshed with each other.

3. The dry strength agent preparation device for the study of enhancing the stability of a papermaking wet-end system according to claim 2, characterized in that: The support frame (2) is fixedly provided with an upper cover plate (10), and the upper cover plate (10) is screwed into the upper port of the material cylinder (4) through a bearing. The upper cover plate (10) has upper and lower material ports. The support frame (2) is fixedly provided with a lower cover plate (11), and the lower cover plate (11) is screwed into the lower port of the material cylinder (4) through a bearing.

4. The dry strength agent preparation device for the study of enhancing the stability of a papermaking wet-end system according to claim 3, characterized in that: The material cylinder (4) is fitted with a main pulley (12), and the support frame (2) is spun with a secondary pulley (13) via a rotating shaft. The main pulley (12) and the secondary pulley (13) are connected by a transmission belt. The support frame (2) is fixedly equipped with a drive motor (14), and the output shaft of the drive motor (14) is connected to the shaft end of the secondary pulley (13) via a transmission connection.

5. The dry strength agent preparation device for the study of enhancing the stability of a papermaking wet-end system according to claim 4, characterized in that: The stirring mechanism (6) includes: Spline shaft (6-1), the spline shaft (6-1) is inserted into the barrel (4), and the lower end of the spline shaft (6-1) is screwed onto the lower cover plate (11) by a bearing; A stirring motor (6-2) is fixedly mounted on a support frame (2), and the output shaft of the stirring motor (6-2) is connected to the lower end of the splined shaft (6-1) via a transmission connection. The lower spline sleeve (6-3) is movably sleeved on the spline shaft (6-1); The lower dispersing disc (6-4) is sleeved and fixed on the lower spline sleeve (6-3); The upper dispersion disk (6-5) is movably sleeved on the spline shaft (6-1) and is positioned above the lower dispersion disk (6-4).

6. The dry strength agent preparation apparatus for the study of enhancing the stability of a papermaking wet-end system according to claim 5, characterized in that: An upper spline sleeve (15) is movably fitted on the spline shaft (6-1). A lifting frame (16) is spun onto the upper spline sleeve (15) via a bearing. A connecting sleeve (17) is movably fitted on the spline shaft (6-1) and is located below the upper spline sleeve (15). An upper dispersion disc (6-5) is fitted with the connecting sleeve (17). A housing (18) is fixedly mounted on the lifting frame (16). A connecting rod is fixedly mounted at the lower end of the housing (18). The connecting frame (19) is screwed onto the connecting sleeve (17) via a bearing. A transmission bevel gear (20) is screwed onto the inner wall of the housing (18) via a rotating shaft. A main bevel gear (21) is fixedly fitted onto the upper spline sleeve (15), and the main bevel gear (21) meshes with the transmission bevel gear (20). A secondary bevel gear (22) is fixedly fitted onto the connecting sleeve (17), and the secondary bevel gear (22) meshes with the transmission bevel gear (20).

7. The dry strength agent preparation apparatus for the study of enhancing the stability of a papermaking wet-end system according to claim 6, characterized in that: The lower end of the connecting sleeve (17) is fixedly provided with a connecting seat (23), and the connecting seat (23) is movably sleeved on the outside of the spline shaft (6-1). The connecting seat (23) is embedded in and screwed with a sealing seat (24) through a bearing. The sealing seat (24) is sleeved on the spline shaft (6-1) and is configured to cooperate with the keyway of the spline shaft (6-1). The upper dispersion plate (6-5) is sleeved and fixed on the connecting seat (23).

8. The dry strength agent preparation apparatus for the study of enhancing the stability of a papermaking wet-end system according to claim 7, characterized in that: A mounting bracket (25) is fixedly installed on the upper cover plate (10). An array of transmission brackets (26) is provided between the mounting bracket (25) and the lifting frame (16). Each set of transmission brackets (26) consists of two units and is spun together by a rotating shaft. The adjacent ends of two sets of transmission brackets (26) are connected by a rotating shaft. A support rod (27) is fixedly installed on the mounting bracket (25). A support sleeve (28) is spun onto the movable end of the uppermost set of transmission brackets (26) by a rotating shaft, and the support sleeve (28) is movably fitted onto the support rod (27). The lifting frame... (16) A guide rod (29) is fixedly installed on the upper part. A guide sleeve (30) is screwed onto the movable end of the lowermost set of transmission frames (26) through a rotating shaft. The guide sleeve (30) is movably sleeved on the guide rod (29). A guide frame (31) is movably inserted on the upper cover plate (10). The lower end of the guide frame (31) is screwed onto the cross-rotating shaft of the set of transmission frames (26) through a bearing. An electric screw pair (32) is fixedly installed on the support frame (2). The top plate of the guide frame (31) is screwed onto the screw end of the electric screw pair (32) through a threaded connection.

9. The dry strength agent preparation apparatus for the study of enhancing the stability of a papermaking wet-end system according to claim 8, characterized in that: The lower spline sleeve (6-3) is provided with an adjustment frame (33) by means of a bearing screw connection. A bolt (34) is movably inserted on the connecting frame (19), and the screw end of the bolt (34) is screwed onto the adjustment frame (33) by means of a thread.

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