An automatic integrated system for preparing and adding a retention aid

Abstract

This invention provides an automated retention aid preparation and addition system, relating to the field of grey board paper production technology. It includes: an installation component; a drive component mounted on the installation component; a retention aid addition component mounted at the bottom of the drive component; and a retention aid preparation component mounted at the top of the drive component. Two rectangular hollow frames are provided, and the two rectangular hollow frames are fixedly mounted on the left and right sides of a circular track. Two support plates are provided, and the two support plates are slidably mounted inside the two rectangular hollow frames. When the drive motor is working, the movable slider moves reciprocally, realizing the automatic addition of the retention aid. This allows operators to adjust the angle of the mounting plate by adjusting the handle, thereby changing the addition position of the retention aid and improving the addition effect. It solves the problem that the retention aid cannot be evenly dispersed into the grey board paper filtrate, affecting the filtration efficiency of the grey board paper filtrate.

Description

Technical Field

[0001] This invention belongs to the field of grey board paper production technology, and more specifically, it relates to an integrated system for the preparation and addition of automated retention aids. Background Technology

[0002] Grey board paper is a type of paperboard made from recycled waste paper. It is an environmentally friendly packaging material, available in single-grey, double-grey, and full-grey varieties. Its main uses include packaging boxes, advertising boards, folders, photo frame backboards, bags, hardcover books, storage boxes, samples, liners, and partitions. To improve the filtration efficiency of grey board paper filtrate and prevent excessively dense filter cake buildup, retention aids need to be added during filtration. Currently, retention aids are generally added manually, resulting in uneven dispersion of the agent in the grey board paper filtrate, affecting filtration efficiency. Furthermore, formulation instructions are often lacking, making it inconvenient for workers to prepare the appropriate weight of retention aid based on the volume of the grey board paper filtrate. Summary of the Invention

[0003] In view of this, the present invention provides an integrated automated retention aid preparation and addition system, which includes an installation component, a drive component, a retention aid addition component, and a retention aid preparation component. When the drive motor is working, the sliding block II moves back and forth, realizing the automatic addition of the retention aid. It is convenient for the operator to adjust the angle of the installation plate by adjusting the handle, so as to change the addition position of the retention aid and improve the addition effect. It is also convenient for the operator to place the retention aid preparation cover and retention aid preparation box inside the retention aid storage box through the U-shaped handle, realizing the quantitative preparation of the retention aid.

[0004] This invention provides an automated retention aid preparation and addition integrated system, specifically including an installation component, a drive component, a retention aid addition component, and a retention aid preparation component; the drive component is mounted on the installation component; the retention aid addition component is mounted at the bottom of the drive component; and the retention aid preparation component is mounted at the top of the drive component.

[0005] The installation components include: a circular track, a rectangular hollow frame, a support plate, and an installation adjustment seat; there are two rectangular hollow frames, and the two rectangular hollow frames are fixedly installed on the left and right sides of the circular track; there are two support plates, and the two support plates are slidably installed inside the two rectangular hollow frames; there are two installation adjustment seats, and the two installation adjustment seats are fixedly installed on the top of the two rectangular hollow frames.

[0006] Furthermore, the retention aid addition assembly includes: a circular addition cylinder, a U-shaped push rod, and a limiting frame; the circular addition cylinder is fixedly installed at the bottom of the movable slider two, and an addition through groove is provided on the circular addition cylinder; the U-shaped push rod is slidably installed on the circular addition cylinder, and the top of the U-shaped push rod is provided with rounded corners, and the U-shaped push rod is tangent to the rectangular track two; there are two limiting frames, and the two limiting frames are fixedly installed on the outside of the U-shaped push rod, and the inner sides of the two limiting frames are in contact with the circular addition cylinder.

[0007] Furthermore, the mounting assembly also includes: mounting ring seats, adjusting threaded rods, and adjusting handles; there are two mounting ring seats, and the two mounting ring seats are fixedly installed on the inner side of the two support plates; there are two adjusting threaded rods, and the two adjusting threaded rods are rotatably installed inside the two mounting ring seats, and the two adjusting threaded rods are threadedly connected to the two mounting adjustment seats; there are two adjusting handles, and the two adjusting handles are fixedly installed inside the two adjusting threaded rods.

[0008] Furthermore, the retention aid addition assembly also includes: a reset spring, a connecting reset rod, and a hollow sealing cover; there are two reset springs, and the two reset springs are fixedly installed at the bottom of the U-shaped push rod, and the bottom of the two reset springs is fixedly connected to the circular addition cylinder; there are two connecting reset rods, and the two connecting reset rods are fixedly installed at the bottom of the U-shaped push rod; the hollow sealing cover is fixedly installed at the bottom of the two connecting reset rods, and the outer wall of the hollow sealing cover is in contact with the circular addition cylinder.

[0009] Furthermore, the drive assembly includes: a movable slider 1, a mounting plate, and an adjustment handle; there are two movable sliders 1, and the two movable sliders 1 are slidably mounted inside the annular track 1; the mounting plate is fixedly mounted on the inner side of the two movable sliders 1; there are two adjustment handles 1, and the two adjustment handles are fixedly mounted on the top of the mounting plate.

[0010] Furthermore, the retention aid preparation assembly includes: circular support rods, a retention aid storage box, and L-shaped limiting frames; there are four circular support rods in total, and the four circular support rods are fixedly installed on the top of the mounting plate; the retention aid storage box is fixedly installed on the top of the four circular support rods; there are two L-shaped limiting frames in total, and the two L-shaped limiting frames are fixedly installed on the bottom of the retention aid storage box.

[0011] Furthermore, the drive assembly also includes: a second rectangular track, a second movable slider, and a drive motor; the second rectangular track is fixedly installed on the bottom of the mounting plate; the second movable slider is slidably installed inside the second rectangular track; and the drive motor is fixedly installed on the bottom of the mounting plate.

[0012] Furthermore, the retention aid preparation assembly also includes: a retention aid preparation cover and a retention aid preparation box; the retention aid preparation cover is slidably mounted on two L-shaped limiting frames; the retention aid preparation box is slidably mounted inside the retention aid preparation cover.

[0013] Furthermore, the drive assembly also includes: a drive screw and an arc-shaped protrusion; the drive screw is fixedly installed on the left side of the drive motor and is threadedly connected to the movable slider two; the arc-shaped protrusion has two rows, and the two rows of arc-shaped protrusions are fixedly installed on the bottom of the rectangular track two.

[0014] Furthermore, the retention aid preparation assembly also includes: a fixing knob and a U-shaped handle; there are two fixing knobs, and the two fixing knobs are threadedly connected to the retention aid preparation cover, and the inner ends of the two fixing knobs are in contact with the retention aid preparation box; the U-shaped handle is fixedly installed on the front side of the retention aid preparation cover.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Because the two support plates are slidably installed inside the two rectangular hollow frames, and the two adjusting threaded rods are rotatably installed inside the two mounting ring seats, and the two adjusting threaded rods are threadedly connected to the two mounting adjusting seats, when the operator turns the two adjusting handles clockwise, the two support plates move outwards at the same time, and when the operator turns the two adjusting handles counterclockwise, the two support plates move inwards at the same time, which makes it convenient for the operator to connect the two support plates to the gray cardboard filter equipment.

[0017] 2. Because the drive screw is fixedly installed on the left side of the drive motor and is threadedly connected to the two movable sliders, the two movable sliders reciprocate when the drive motor is working, realizing the automatic addition of the retention aid. Furthermore, because the two movable sliders are slidably installed inside the annular track, and the two adjusting handles are fixedly installed on the top of the mounting plate, it is convenient for the staff to adjust the angle of the mounting plate by adjusting the handles, thereby changing the position of the retention aid addition and improving the addition effect of the retention aid.

[0018] 3. Because the U-shaped push rod is slidably installed on the circular adding cylinder and is tangent to the rectangular track, when the drive motor is working, the U-shaped push rod moves up and down repeatedly under the action of two rows of arc protrusions and two return springs, so that the retention aid inside the circular adding cylinder is discharged through the gap between the circular adding cylinder and the hollow sealing cover, thus realizing the slow and continuous addition of the retention aid.

[0019] 4. Because the U-shaped handle is fixedly installed on the front side of the retention aid preparation cover, it is convenient for staff to place the retention aid preparation cover and the retention aid preparation box inside the retention aid storage box through the U-shaped handle, thus realizing the quantitative preparation of the retention aid. Furthermore, because the two fixing knobs are threadedly connected to the retention aid preparation cover, and the inner ends of the two fixing knobs are in contact with the retention aid preparation box, it is convenient for staff to adjust the position of the retention aid preparation box appropriately, and to adjust the preparation weight of the retention aid appropriately. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0021] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0022] In the attached diagram:

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is the present invention. Figure 1 A schematic diagram of the bottom view structure.

[0025] Figure 3 This is a schematic diagram of the installation component of the present invention.

[0026] Figure 4 This is the present invention. Figure 1 A schematic diagram of the structure from the perspective of the viewpoint.

[0027] Figure 5 This is the present invention. Figure 4 A magnified schematic diagram of a portion of region A in the middle.

[0028] Figure 6 This is a schematic diagram of the structure of the driving component of the present invention.

[0029] Figure 7 This is a schematic diagram of the central cross-section of the retention aid addition component of the present invention.

[0030] Figure 8 This is the present invention. Figure 2 A magnified schematic diagram of a portion of region B.

[0031] Figure 9 This is a schematic diagram of the structure of the retention aid formulation component of the present invention.

[0032] Figure 10 This is a schematic diagram of the central cross-section of the retention aid formulation component of the present invention.

[0033] List of reference numerals

[0034] 1. Installation Components; 101. Circular Track One; 102. Rectangular Hollow Frame; 103. Support Plate; 104. Mounting Adjustment Seat; 105. Mounting Ring Seat; 106. Adjusting Threaded Rod; 107. Adjusting Handle; 2. Drive Components; 201. Moving Slider One; 202. Mounting Plate; 203. Adjusting Handle; 204. Rectangular Track Two; 205. Moving Slider Two; 206. Drive Motor; 207. Drive Screw; 208. Arc-shaped Protrusion; 3. 1. Retention aid addition component; 301. Circular addition cylinder; 3011. Addition channel; 302. U-shaped push rod; 303. Limiting frame; 304. Return spring; 305. Connecting return rod; 306. Hollow sealing cover; 4. Retention aid preparation component; 401. Circular support rod; 402. Retention aid storage box; 403. L-shaped limiting frame; 404. Retention aid preparation cover; 405. Retention aid preparation box; 406. Fixing knob; 407. U-shaped handle. Detailed Implementation

[0035] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0036] Example: Please refer to Figures 1 to 10 As shown: The present invention provides an automated retention aid preparation and addition integrated system, including an installation component 1, a drive component 2, a retention aid addition component 3, and a retention aid preparation component 4; the drive component 2 is installed on the installation component 1; the retention aid addition component 3 is installed at the bottom of the drive component 2; and the retention aid preparation component 4 is installed at the top of the drive component 2.

[0037] like Figure 3As shown, the mounting assembly 1 includes: an annular track 101, a rectangular hollow frame 102, a support plate 103, and a mounting adjustment seat 104; two rectangular hollow frames 102 are provided, and the two rectangular hollow frames 102 are fixedly installed on the left and right sides of the annular track 101; two support plates 103 are provided, and the two support plates 103 are slidably installed inside the two rectangular hollow frames 102; two mounting adjustment seats 104 are provided, and the two mounting adjustment seats 104 are fixedly installed on the top of the two rectangular hollow frames 102; the mounting assembly 1 also includes: a mounting ring seat 105, an adjusting threaded rod 106, and an adjusting handle 107; two mounting ring seats 105 are provided, and the two mounting ring seats 105 are fixedly installed on the inner side of the two support plates 103; two adjusting threaded rods 106 are provided, and the two adjusting threaded rods 106 can rotate The two adjusting rods 106 are threadedly connected to the two adjusting seats 104 and are installed inside the two mounting ring seats 105. Two adjusting handles 107 are provided, and are fixedly installed inside the two adjusting rods 106. Their specific function is as follows: Since the two supporting hanging plates 103 are slidably installed inside the two rectangular hollow frames 102, and the two adjusting rods 106 are rotatably installed inside the two mounting ring seats 105 and threadedly connected to the two adjusting seats 104, when the operator rotates the two adjusting handles 107 clockwise, the two supporting hanging plates 103 move outwards simultaneously; when the operator rotates the two adjusting handles 107 counterclockwise, the two supporting hanging plates 103 move inwards simultaneously, facilitating the connection of the two supporting hanging plates 103 to the gray cardboard filter equipment.

[0038] like Figure 6As shown, the drive assembly 2 includes: a movable slider 201, a mounting plate 202, and an adjusting handle 203; two movable sliders 201 are provided, and the two movable sliders 201 are slidably installed inside the annular track 101; the mounting plate 202 is fixedly installed on the inner side of the two movable sliders 201; two adjusting handles 203 are provided, and the two adjusting handles 203 are fixedly installed on the top of the mounting plate 202; the drive assembly 2 also includes: a rectangular track 204, a movable slider 205, and a drive motor 206; the rectangular track 204 is fixedly installed on the bottom of the mounting plate 202; the movable slider 205 is slidably installed inside the rectangular track 204; the drive motor 206 is fixedly installed on the bottom of the mounting plate 202; the drive assembly 2 also includes: a drive screw 207 and an arc-shaped protrusion 208; the drive screw 207... 07 is fixedly installed on the left side of the drive motor 206, and the drive screw 207 is threadedly connected to the movable slider 205; there are two rows of arc-shaped protrusions 208, and the two rows of arc-shaped protrusions 208 are fixedly installed at the bottom of the rectangular track 204. Their specific function is as follows: because the drive screw 207 is fixedly installed on the left side of the drive motor 206, and the drive screw 207 is threadedly connected to the movable slider 205, when the drive motor 206 is working, the movable slider 205 moves back and forth, realizing the automatic addition of the retention aid. Also, because the two movable sliders 201 are slidably installed inside the annular track 101, and the two adjusting handles 203 are fixedly installed on the top of the mounting plate 202, it is convenient for the staff to adjust the angle of the mounting plate 202 by adjusting the handles 203, so that the position of the retention aid is changed, thereby improving the addition effect of the retention aid.

[0039] like Figure 7 , Figure 8As shown, the retention aid addition assembly 3 includes: a circular addition cylinder 301, a U-shaped push rod 302, and a limiting frame 303; the circular addition cylinder 301 is fixedly installed on the bottom of the movable slider 205, and an addition through groove 3011 is provided on the circular addition cylinder 301; the U-shaped push rod 302 is slidably installed on the circular addition cylinder 301, and the top of the U-shaped push rod 302 is provided with rounded corners, and the U-shaped push rod 302 is tangent to the rectangular track 204; two limiting frames 303 are provided, and the two limiting frames 303 are fixedly installed on the outside of the U-shaped push rod 302, and the inner sides of the two limiting frames 303 are in contact with the circular addition cylinder 301; the retention aid addition assembly 3 also includes: a reset spring 304, a connecting reset rod 305, and a hollow sealing cover 306; two reset springs 304 are provided, and the two reset springs 304 are fixedly installed on the U-shaped push rod The bottom of the U-shaped push rod 302 is fixedly connected to the bottom of the circular adding cylinder 301; two connecting reset rods 305 are provided, and the two connecting reset rods 305 are fixedly installed at the bottom of the U-shaped push rod 302; the hollow sealing cover 306 is fixedly installed at the bottom of the two connecting reset rods 305, and the outer wall of the hollow sealing cover 306 is in contact with the circular adding cylinder 301. Its specific function is as follows: because the U-shaped push rod 302 is slidably installed on the circular adding cylinder 301, and the U-shaped push rod 302 is tangent to the rectangular track 204, when the drive motor 206 works, the U-shaped push rod 302 moves up and down reciprocally under the action of the two rows of arc protrusions 208 and the two reset springs 304, so that the retention aid inside the circular adding cylinder 301 is discharged through the gap between the circular adding cylinder 301 and the hollow sealing cover 306, realizing the slow and continuous addition of the retention aid.

[0040] like Figure 9 , Figure 10As shown, the retention aid preparation component 4 includes: circular support rods 401, a retention aid storage box 402, and L-shaped limiting brackets 403; four circular support rods 401 are provided, and the four circular support rods 401 are fixedly installed on the top of the mounting plate 202; the retention aid storage box 402 is fixedly installed on the top of the four circular support rods 401; two L-shaped limiting brackets 403 are provided, and the two L-shaped limiting brackets 403 are fixedly installed on the bottom of the retention aid storage box 402; the retention aid preparation component 4 also includes: a retention aid preparation cover 404 and a retention aid preparation box 405; the retention aid preparation cover 404 is slidably installed on the two L-shaped limiting brackets 403; the retention aid preparation box 405 is slidably installed inside the retention aid preparation cover 404; the retention aid preparation component 4 also includes: a fixing knob 406 and a U-shaped handle 407; the fixing knob 406... There are two knobs, and the two fixing knobs 406 are threadedly connected to the retention aid preparation cover 404, and the inner ends of the two fixing knobs 406 are in contact with the retention aid preparation box 405. The U-shaped handle 407 is fixedly installed on the front side of the retention aid preparation cover 404. Its specific function is as follows: because the U-shaped handle 407 is fixedly installed on the front side of the retention aid preparation cover 404, it is convenient for the staff to place the retention aid preparation cover 404 and the retention aid preparation box 405 inside the retention aid storage box 402 through the U-shaped handle 407, so as to realize the quantitative preparation of the retention aid. Also, because the two fixing knobs 406 are threadedly connected to the retention aid preparation cover 404, and the inner ends of the two fixing knobs 406 are in contact with the retention aid preparation box 405, it is convenient for the staff to adjust the position of the retention aid preparation box 405 appropriately, so as to adjust the preparation weight of the retention aid appropriately.

[0041] The specific usage and function of this embodiment are as follows: In this invention, the operator first places two support plates 103 on the gray cardboard filtration equipment. Then, the operator rotates two adjusting handles 107 clockwise to ensure that the two support plates 103 are in close contact with the gray cardboard filtration equipment. Next, the operator adjusts the position of the retention aid preparation box 405 according to the volume of the gray cardboard filtrate. This allows for appropriate adjustment of the retention aid preparation weight. Then, the two fixing knobs 406 are tightened. Finally, the operator places the retention aid preparation cover 404 and the retention aid preparation box 405 inside the retention aid storage box 402 using the U-shaped handle 407, filling the retention aid preparation cover 404 and the retention aid preparation box 405 with the retention aid. The retention aid is then added from the retention aid preparation cover 404 and the retention aid preparation box 405 to the circular addition cylinder 301 through the addition channel 3011. Then, the operator starts the drive motor 206. When the drive motor 206 is working, the moving slider 205 moves back and forth, realizing the automatic addition of the retention aid. The U-shaped push rod 302 moves up and down back and forth under the action of two rows of arc protrusions 208 and two return springs 304, so that the retention aid inside the circular addition cylinder 301 is discharged through the gap between the circular addition cylinder 301 and the hollow sealing cover 306, realizing the slow and continuous addition of the retention aid. Then, the operator can adjust the angle of the mounting plate 202 by adjusting the handle 203, so that the addition position of the retention aid changes and improves the addition effect of the retention aid.

[0042] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. An automated retention aid preparation and addition integrated system, comprising an installation component (1), a drive component (2), a retention aid addition component (3), and a retention aid preparation component (4); characterized in that: The drive assembly (2) is mounted on the mounting assembly (1); the retention aid addition assembly (3) is mounted on the bottom of the drive assembly (2); the retention aid formulation assembly (4) is mounted on the top of the drive assembly (2); The installation assembly (1) includes: a ring track (101), a rectangular hollow frame (102), a support plate (103), and an installation adjustment seat (104); there are two rectangular hollow frames (102), and the two rectangular hollow frames (102) are fixedly installed on the left and right sides of the ring track (101); there are two support plates (103), and the two support plates (103) are slidably installed inside the two rectangular hollow frames (102); there are two installation adjustment seats (104), and the two installation adjustment seats (104) are fixedly installed on the top of the two rectangular hollow frames (102); The drive assembly (2) includes: a movable slider (201), a mounting plate (202), and an adjustment handle (203); there are two movable sliders (201), and the two movable sliders (201) are slidably mounted inside the annular track (101); the mounting plate (202) is fixedly mounted on the inner side of the two movable sliders (201); there are two adjustment handles (203), and the two adjustment handles (203) are fixedly mounted on the top of the mounting plate (202); The drive assembly (2) further includes: a second rectangular track (204), a second movable slider (205), and a drive motor (206); the second rectangular track (204) is fixedly installed on the bottom of the mounting plate (202); the second movable slider (205) is slidably installed inside the second rectangular track (204); and the drive motor (206) is fixedly installed on the bottom of the mounting plate (202). The drive assembly (2) further includes: a drive screw (207) and an arc-shaped push protrusion (208); the drive screw (207) is fixedly installed on the left side of the drive motor (206), and the drive screw (207) is threadedly connected to the second movable slider (205); the arc-shaped push protrusion (208) has two rows, and the two rows of arc-shaped push protrusions (208) are fixedly installed on the bottom of the second rectangular track (204); The retention aid addition component (3) includes: a circular addition cylinder (301), a U-shaped push rod (302), and a limiting frame (303); the circular addition cylinder (301) is fixedly installed at the bottom of the movable slider two (205), and an addition through groove (3011) is provided on the circular addition cylinder (301); the U-shaped push rod (302) is slidably installed on the circular addition cylinder (301), and the top of the U-shaped push rod (302) is provided with rounded corners, and the U-shaped push rod (302) is tangent to the rectangular track two (204); there are two limiting frames (303), and the two limiting frames (303) are fixedly installed on the outside of the U-shaped push rod (302), and the inner sides of the two limiting frames (303) are in contact with the circular addition cylinder (301); The retention aid addition assembly (3) further includes: a reset spring (304), a connecting reset rod (305), and a hollow sealing cover (306); there are two reset springs (304), and the two reset springs (304) are fixedly installed at the bottom of the U-shaped push rod (302), and the bottom of the two reset springs (304) is fixedly connected to the circular addition cylinder (301); there are two connecting reset rods (305), and the two connecting reset rods (305) are fixedly installed at the bottom of the U-shaped push rod (302); the hollow sealing cover (306) is fixedly installed at the bottom of the two connecting reset rods (305), and the outer wall of the hollow sealing cover (306) is in contact with the circular addition cylinder (301).

2. The automated retention aid preparation and addition integrated system according to claim 1, characterized in that: The mounting assembly (1) further includes: mounting ring seat (105), adjusting threaded rod (106), and adjusting handle (107); there are two mounting ring seats (105), and the two mounting ring seats (105) are fixedly installed on the inner side of the two support plates (103); there are two adjusting threaded rods (106), and the two adjusting threaded rods (106) are rotatably installed inside the two mounting ring seats (105), and the two adjusting threaded rods (106) are threadedly connected to the two mounting adjustment seats (104); there are two adjusting handles (107), and the two adjusting handles (107) are fixedly installed inside the two adjusting threaded rods (106).

3. The automated retention aid preparation and addition integrated system according to claim 1, characterized in that: The retention aid preparation component (4) includes: a circular support rod (401), a retention aid storage box (402), and an L-shaped limiting bracket (403); there are four circular support rods (401), and the four circular support rods (401) are fixedly installed on the top of the mounting plate (202); the retention aid storage box (402) is fixedly installed on the top of the four circular support rods (401); there are two L-shaped limiting brackets (403), and the two L-shaped limiting brackets (403) are fixedly installed on the bottom of the retention aid storage box (402).

4. The automated retention aid preparation and addition integrated system according to claim 3, characterized in that: The retention aid preparation assembly (4) further includes: a retention aid preparation cover (404) and a retention aid preparation box (405); the retention aid preparation cover (404) is slidably mounted on two L-shaped limiting brackets (403); the retention aid preparation box (405) is slidably mounted inside the retention aid preparation cover (404).

5. The automated retention aid preparation and addition integrated system according to claim 4, characterized in that: The retention aid preparation assembly (4) further includes: an anti-displacement fixing knob (406) and a U-shaped preparation handle (407); there are two anti-displacement fixing knobs (406), and the two anti-displacement fixing knobs (406) are threadedly connected to the retention aid preparation cover (404), and the inner ends of the two anti-displacement fixing knobs (406) are in contact with the retention aid preparation box (405); the U-shaped preparation handle (407) is fixedly installed on the front side of the retention aid preparation cover (404).

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