Blade adjusting structure and stirrer

Abstract

The present application relates to the technical field of stirrer, disclose a kind of blade adjusting structure and stirrer, including blade, further comprising: upper cover and lower cover, the upper cover and lower cover are mutually matched to provide the supporting effect of blade;Adjusting mechanism is located in the inside of upper cover and lower cover, the adjusting mechanism includes convex column, and groove is opened in the convex column, the groove includes middle slot section and side slot section, the direction of middle slot section and side slot section is different, guiding wheel is slidably installed in the groove, the guiding wheel is lifted in the groove by being in different positions to drive blade to be in different angles.The present application is adjusted by setting adjusting mechanism to blade to make it can be adjusted, to adapt to the stirring demand under different concentration, while setting stirring rod to assist stirring, increase stirring effect.

Description

Technical Field

[0001] This invention belongs to the field of agitator technology, specifically, it relates to a blade adjustment structure and agitator. Background Technology

[0002] Mixing systems are widely used in various fields. They mechanically replace manual mixing of materials to maximize mixing efficiency. Mixing systems offer varying output power depending on their mixing volume and operating conditions.

[0003] Chinese Patent CN211586248U discloses a blade-adjustable submersible agitator. The drive shaft is threadedly fitted to a bearing sleeve. The upper end of the first blade is hinged to a rotating block, and the upper part of the first blade is located below the hinge shaft and hinged to the bearing sleeve. Therefore, operators can adjust the depth of the drive shaft within the bearing sleeve by rotating the bearing sleeve, thereby adjusting the unfolding angle of the blade assembly to meet the agitation needs of sewage tanks with varying degrees of impurity accumulation. Furthermore, the second blade is slidably connected to the first blade, facilitating the adjustment of the blade length according to the width of the sewage tank, further improving the agitation effect.

[0004] However, this technical solution still has at least the following drawbacks: the stirring device in this technical solution can only adjust the length of the blades, and increasing the length of the blades will lead to an increase in the torque on the blades, thereby increasing the risk of breakage. In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a blade adjustment structure and a stirrer. By setting an adjustment mechanism on the blades, they can be adjusted to meet the stirring requirements at different concentrations. At the same time, a stirring rod is set to assist in stirring and increase the stirring effect. By setting a speed change mechanism to change the speed of the stirring rod, and taking into account the resistance of the blades at different tilt angles, the output power of the power unit can be reasonably distributed between the blades and the stirring rod.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A blade adjustment structure includes a blade, and further includes:

[0008] An upper cover and a lower cover, which cooperate with each other to provide support for the blades;

[0009] An adjustment mechanism is located inside the upper and lower covers. The adjustment mechanism includes a protruding post with a groove. The groove includes a middle groove section and a side groove section. The middle groove section and the side groove section have different directions. A guide wheel is slidably installed in the groove. When the guide wheel moves up and down in the groove, it drives the blade to different angles by being in different positions.

[0010] In a preferred embodiment of the present invention, a lifting mechanism is provided inside the lower cover. The lifting mechanism includes a support plate, a guide wheel is rotatably connected to the support plate, and a pull rod is installed on the top of the support plate. The pull rod moves through the upper cover and extends to the outside. The lifting mechanism drives the support plate to move up and down between the upper cover and the lower cover through the pull rod.

[0011] In a preferred embodiment of the present invention, an installation tube is fixedly installed on the top of the pull rod, an outer sleeve is fixedly installed on the installation tube, a bearing is fixedly installed on the top of the outer sleeve, and a protruding rod is fixedly installed on the outer ring of the bearing. The protruding rod has the function of keeping the outer sleeve rotating when the bearing drives the outer sleeve to rise and fall.

[0012] A stirrer includes a blade adjustment structure and a power unit. The output end of the power unit is equipped with an output shaft. The output shaft is fixedly connected to a top cover. The bearing and the outer sleeve are both movably sleeved on the outside of the output shaft.

[0013] It also includes a mixing bowl for housing the agitator.

[0014] In a preferred embodiment of the present invention, a support mechanism is provided on the mixing tank, and an auxiliary mixing mechanism is provided at the bottom of the support mechanism. The auxiliary mixing mechanism includes a mixing rod, the bottom of which is movably inserted into the bottom of the inner wall of the mixing tank. A first rotating shaft and a second rotating shaft are also provided on the support mechanism, and a bevel gear set is installed between the first rotating shaft, the second rotating shaft, and the mixing rod.

[0015] In a preferred embodiment of the present invention, the support mechanism includes a mounting frame mounted on the top of the mixing tank, a fixing pipe fixedly mounted on the mounting frame, a second rotating shaft rotatably connected inside the fixing pipe, a base plate fixedly mounted on the mounting frame, and a speed-changing mechanism provided on the base plate.

[0016] In a preferred embodiment of the present invention, the speed change mechanism includes a support assembly, the support assembly includes a fixing plate fixedly connected to the base plate, a fixing block is fixedly installed on the fixing plate, a slide rail is fixedly installed on the fixing block, a push rod assembly is slidably installed on the slide rail, and the speed change mechanism further includes a speed change component, the push rod assembly driving the speed change component to change speed when sliding along the slide rail.

[0017] In a preferred embodiment of the present invention, the transmission assembly includes a third shaft and a fourth shaft rotatably connected to the fixed block. The third shaft is connected to the second shaft and the fourth shaft is connected to the output shaft via a bevel gear set. The power device drives the second shaft to rotate through the transmission assembly.

[0018] In a preferred embodiment of the present invention, the transmission assembly further includes a first adapter and a second adapter respectively fixedly installed on the third shaft and the fourth shaft. The first adapter and the second adapter are in opposite directions. A transmission wheel is meshed between the first adapter and the second adapter. A fixed rod is movably inserted inside the transmission wheel. Both ends of the fixed rod are fixedly connected to a fixed block. A connecting frame is movably sleeved on the fixed rod. A stop rod is fixedly installed on the connecting frame. The stop rod is movably connected to a push rod assembly.

[0019] In a preferred embodiment of the present invention, a pushing mechanism is provided on one side of the substrate. The pushing mechanism includes a hydraulic cylinder. A sleeve is fixedly installed at the output end of the hydraulic cylinder. The sleeve is movably sleeved on the protruding rod. A pull plate is rotatably connected to one end of the sleeve. One end of the pull plate is rotatably connected to the bottom of the push rod assembly.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] This invention incorporates an adjustment mechanism for the blades to adapt to different concentrations and provides a stirring rod for auxiliary stirring, thereby enhancing the stirring effect.

[0022] This invention uses a speed-changing mechanism to change the speed of the stirring rod, and combines this with the resistance experienced by the blades at different tilt angles, so that the output power of the power unit can be reasonably distributed between the blades and the stirring rod. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the blade adjustment structure and the overall structure of the agitator according to the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of the stirrer of the present invention;

[0025] Figure 3 This is a schematic diagram of the mechanical seal device of the present invention;

[0026] Figure 4 This is a schematic diagram of the outer sleeve structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the internal structure of the upper cover of the present invention;

[0028] Figure 6 This is a schematic diagram of the tie rod structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure at the support plate of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure at the protruding post of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the hydraulic cylinder of the present invention;

[0032] Figure 10 This is a schematic diagram of the mixing tank structure of the present invention;

[0033] Figure 11 This is a schematic diagram of the structure at the fixing plate of the present invention;

[0034] Figure 12 This is a schematic diagram of the push rod assembly of the present invention;

[0035] Figure 13 This is a schematic diagram of the structure of the transmission wheel of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100. Sliding frame; 101. Power unit; 102. Packing seal device; 103. Mechanical seal device; 104. Output shaft; 105. Upper cover; 106. Lower cover; 107. Protruding post; 108. Blade holder; 109. Blade;

[0038] 200. Support plate; 201. Positioning rod; 202. Guide wheel; 203. Middle groove section; 204. Side groove section; 205. Tie rod; 206. Mounting tube; 207. Outer tube; 208. Bearing; 209. Protruding rod;

[0039] 300. Mixing tank; 301. Mounting bracket; 302. Bevel gear set; 303. First rotating shaft; 304. Second rotating shaft; 305. Fixing tube; 306. Stirring rod;

[0040] 400. Base plate; 401. Fixing plate; 402. Fixing block; 403. Slide rail; 404. Push rod assembly; 405. Pull plate; 406. Sleeve; 407. Hydraulic cylinder;

[0041] 500. Third rotating shaft; 501. First adapter; 502. Fixing rod; 503. Transmission wheel; 504. Second adapter; 505. Fourth rotating shaft; 506. Connecting frame; 507. Stop bar. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0043] Example 1

[0044] like Figures 1 to 8 As shown, a blade adjustment structure includes a blade 109, and further includes:

[0045] The upper cover 105 and the lower cover 106 cooperate with each other to provide support for the blade 109.

[0046] An adjustment mechanism is located inside the upper cover 105 and the lower cover 106. The adjustment mechanism includes a protruding post 107, and a groove is provided on the protruding post 107. The groove includes a middle groove section 203 and a side groove section 204. The middle groove section 203 and the side groove section 204 have different directions. A guide wheel 202 is slidably installed in the groove. When the guide wheel 202 moves up and down in the groove, it drives the blade 109 to different angles by being in different positions.

[0047] When the guide wheel 202 is in the middle position of the middle groove section 203, the rotation center of the protrusion 107 is aligned with the center position of the guide wheel 202. At this time, the protrusion 107 can rotate freely to realize the installation and removal of the blade 109. When the guide wheel 202 is at both ends of the middle groove section 203, the center position of the guide wheel 202 is not aligned with the rotation center of the protrusion 107. At this time, the guide wheel 202 abuts against the middle groove section 203 so that it cannot rotate, thereby fixing the blade 109. When it is necessary to adjust the angle of the blade 109, the guide wheel 202 is controlled to enter the side groove section 204. At this time, the guide wheel 202 abuts against the side groove section 204 so that it drives the protrusion 107 to rotate.

[0048] One end of the blade 109 is fixedly mounted with a blade seat 108, which is fixedly connected to the protrusion 107. The blade seat 108 is used to support the blade 109. The protrusion 107 is threadedly connected to the lower cover 106. The threaded connection between the protrusion 107 and the lower cover 106 adopts a thread clearance fit so that the protrusion 107 and the lower cover 106 can easily rotate relative to each other.

[0049] like Figures 5 to 7 As shown, in a specific embodiment, a lifting mechanism is provided inside the lower cover 106. The lifting mechanism includes a support plate 200, a guide wheel 202 rotatably connected to the support plate 200, and a pull rod 205 installed on the top of the support plate 200. The pull rod 205 movably passes through the upper cover 105 and extends to the outside. The lifting mechanism drives the support plate 200 to move up and down between the upper cover 105 and the lower cover 106 via the pull rod 205. In this configuration, a positioning rod 201 is fixedly installed on the bottom of the inner wall of the lower cover 106. The support plate 200 is movably sleeved on the positioning rod 201. There are three positioning rods 201, which correspond to the blades 109. The support plate 200 slides up and down along the positioning rods 201 but cannot rotate.

[0050] like Figure 4 As shown, furthermore, a mounting tube 206 is fixedly installed on the top of the pull rod 205, and an outer sleeve 207 is fixedly installed on the mounting tube 206. A bearing 208 is fixedly installed on the top of the outer sleeve 207, and a protruding rod 209 is fixedly installed on the outer ring of the bearing 208. The protruding rod 209, through the bearing 208, drives the outer sleeve 207 to rise and fall, thus maintaining the rotation of the outer sleeve 207. In this configuration, sealing rings can be provided between the two ends of the outer sleeve 207 and the output shaft 104 to protect the output shaft 104 and prevent it from being corroded.

[0051] like Figures 1 to 3 As shown, a stirrer includes the blade adjustment structure described above, and also includes a power unit 101. The output end of the power unit 101 is equipped with an output shaft 104. The output shaft 104 is fixedly connected to the upper cover 105. The bearing 208 and the outer sleeve 207 are both movably sleeved on the outside of the output shaft 104.

[0052] The power unit 101 adopts an energy-saving permanent magnet synchronous motor, which has an energy-saving effect. A packing seal device 102 and a mechanical seal device 103 are installed between the power unit 101 and the output shaft 104. A sliding frame 100 is slidably installed on the power unit 101, which allows the power unit 101 to slide for disassembly.

[0053] It also includes a mixing bowl 300 for housing the agitator.

[0054] like Figure 10 , Figure 11 As shown, in a specific embodiment, a support mechanism is provided on the mixing tank 300, and an auxiliary stirring mechanism is provided at the bottom of the support mechanism. The auxiliary stirring mechanism includes a stirring rod 306, the bottom of which is movably inserted into the bottom of the inner wall of the mixing tank 300. The support mechanism is also provided with a first rotating shaft 303 and a second rotating shaft 304, and a bevel gear set 302 is installed between the first rotating shaft 303, the second rotating shaft 304, and the stirring rod 306. In this configuration, the stirring rod 306 is tapered at the top and thickened at the bottom to ensure that the solution at the bottom is fully stirred and to prevent materials in the liquid from sinking. The movable insertion of the stirring rod 306 into the mixing tank 300 allows the stirring rod 306 to be detached from the mixing tank 300. The stirring rod 306 is star-shaped to prevent it from being easily entangled by impurities, making it easy to clean.

[0055] like Figure 10As shown, the support mechanism further includes a mounting bracket 301 mounted on top of the mixing tank 300. A fixing pipe 305 is fixedly mounted on the mounting bracket 301, and a second rotating shaft 304 is rotatably connected inside the fixing pipe 305. A base plate 400 is also fixedly mounted on the mounting bracket 301, and a speed-changing mechanism is provided on the base plate 400. In this configuration, the mounting bracket 301 is directly mounted on the mixing tank 300 so that it can be detached.

[0056] like Figures 11 to 13 As shown, the speed change mechanism further includes a support assembly, which includes a fixed plate 401 fixedly connected to the base plate 400. A fixed block 402 is fixedly mounted on the fixed plate 401, and a slide rail 403 is fixedly mounted on the fixed block 402. A push rod assembly 404 is slidably mounted on the slide rail 403. The speed change mechanism also includes a speed change component. When the push rod assembly 404 slides along the slide rail 403, it drives the speed change component to change speed. In this configuration, the push rod assembly 404 consists of multiple short rods, and plates are installed at both the upper and lower ends. Gaps are formed between the short rods, and the plates are slidably connected to the slide rail 403.

[0057] like Figures 12 to 13 As shown, the transmission assembly further includes a third rotating shaft 500 and a fourth rotating shaft 505 rotatably connected to the fixed block 402. The third rotating shaft 500 is connected to the second rotating shaft 304, and the fourth rotating shaft 505 is connected to the output shaft 104 through a bevel gear set 302. The power unit 101 drives the second rotating shaft 304 to rotate through the transmission assembly. The transmission assembly also includes a first adapter 501 and a second adapter 504 respectively fixedly installed on the third rotating shaft 500 and the fourth rotating shaft 505. The first adapter 501 and the second adapter 504 are in opposite directions. A transmission wheel 503 is meshed between the first adapter 501 and the second adapter 504. A fixed rod 502 is movably inserted into the transmission wheel 503. Both ends of the fixed rod 502 are fixedly connected to the fixed block 402. A connecting frame 506 is movably sleeved on the fixed rod 502. A stop rod 507 is fixedly installed on the connecting frame 506. The stop rod 507 is movably connected to the push rod set 404. In this configuration, both the first adapter 501 and the second adapter 504 are frustum-shaped and have the same inclination. By reversing the orientation of the first adapter 501 and the second adapter 504, the sides of the first adapter 501 and the second adapter 504 that are close to each other are parallel. At this time, the transmission wheel 503 can cooperate with different positions of the first adapter 501 or the second adapter 504 to achieve the transmission effect.

[0058] like Figures 12 to 13As shown, a pushing mechanism is further provided on one side of the substrate 400. The pushing mechanism includes a hydraulic cylinder 407, and a sleeve 406 is fixedly installed at the output end of the hydraulic cylinder 407. The sleeve 406 is movably sleeved on the protruding rod 209. A pull plate 405 is rotatably connected to one end of the sleeve 406, and one end of the pull plate 405 is rotatably connected to the bottom of the push rod assembly 404. In this configuration, the sleeve 406 is movably sleeved on the protruding rod 209 so that the protruding rod 209 can be separated from the sleeve 406.

[0059] The implementation principle of the blade adjustment structure and stirrer in this embodiment is as follows: When working, the power unit 101 drives the upper cover 105 and the lower cover 106 to rotate through the output shaft 104, so that the blade 109 rotates accordingly, thereby playing the role of stirring inside the stirring tank 300.

[0060] When the output shaft 104 rotates, it drives the fourth rotating shaft 505 to rotate through the bevel gear set 302. The fourth rotating shaft 505 drives the third rotating shaft 500 to rotate through the second adapter 504, the transmission wheel 503 and the first adapter 501. The third rotating shaft 500 drives the second rotating shaft 304 to rotate through the bevel gear set 302. The second rotating shaft 304 drives the stirring rod 306 to rotate through the bevel gear set 302, thereby playing a role in assisting the stirring at the edge of the stirring tank 300.

[0061] When adjusting the angle of blade 109 according to the concentration, the hydraulic cylinder 407 is activated. The hydraulic cylinder 407 drives the sleeve 406 to move. When the sleeve 406 moves, it drives the convex rod 209 to move. The convex rod 209 drives the bearing 208 to move. The bearing 208 drives the outer sleeve 207 to move. The outer sleeve 207 drives the mounting tube 206 to move, so that the pull rod 205 drives the guide wheel 202 to move through the support plate 200. When the guide wheel 202 enters the side groove section 204 along the middle groove section 203, it drives the convex column 107 to rotate. The convex column 107 drives the blade seat 108 to rotate, so as to adjust the angle of blade 109. When the concentration is high, the guide wheel 202 moves upward to increase the tilt angle of blade 109 and increase the stirring force of blade 109 on solution. When the concentration is low, the guide wheel 202 moves downward to reduce the tilt angle of blade 109 and reduce resistance.

[0062] When the hydraulic cylinder 407 is working, it drives the push rod assembly 404 to move via the pull plate 405. Simultaneously, the push rod assembly 404 moves, driving the stop rod 507 to move via the connecting frame 506, which in turn drives the transmission wheel 503. The transmission wheel 503 achieves a speed-changing function by cooperating with different parts of the first adapter 501 and the second adapter 504, causing the rotational speed of the third rotating shaft 500 to change. The speed of the stirring rod 306 changes accordingly. When the transmission wheel 503 cooperates with the first adapter 501 and the second adapter 504 at different positions, the resistance experienced by the fourth rotating shaft 505 varies. When the transmission wheel 503 approaches the thicker end of the second adapter 504, the resistance experienced by the fourth rotating shaft 505 increases, and the rotational speed of the stirring rod 306 increases. When the transmission wheel 503 approaches the thinner end of the second adapter 504, the resistance experienced by the fourth rotating shaft 505 decreases, and the speed of the stirring rod 306 decreases.

[0063] Based on this, when the concentration is high, the tilt angle of the blade 109 increases to improve the stirring force, and at the same time, the transmission wheel 503 is close to the thin end of the second adapter 504 so that the resistance of the fourth rotating shaft 505 is reduced, and the power of the power unit 101 can be output to the blade 109 more. When the concentration is low, the tilt angle of the blade 109 decreases to reduce its resistance, and at the same time, the transmission wheel 503 is close to the thick end of the second adapter 504 so that the power of the power unit 101 can be output to the stirring rod 306 more, increasing the rotation speed of the stirring rod 306.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A blade adjustment structure, comprising blades (109), characterized in that, Also includes: The upper cover (105) and the lower cover (106) cooperate with each other to provide support for the blade (109); An adjustment mechanism is located inside the upper cover (105) and the lower cover (106). The adjustment mechanism includes a protruding post (107) and a groove is provided on the protruding post (107). The groove includes a middle groove section (203) and a side groove section (204). The middle groove section (203) and the side groove section (204) have different directions. A guide wheel (202) is slidably installed in the groove. When the guide wheel (202) moves up and down in the groove, it drives the blade (109) to different angles by being in different positions. A blade seat (108) is fixedly installed at one end of the blade (109). The blade seat (108) is fixedly connected to the protruding post (107). The lower cover (106) is provided with a lifting mechanism, which includes a support plate (200). The guide wheel (202) is rotatably connected to the support plate (200). A pull rod (205) is installed on the top of the support plate (200). The pull rod (205) moves through the upper cover (105) and extends to the outside. The lifting mechanism drives the support plate (200) to move up and down between the upper cover (105) and the lower cover (106) through the pull rod (205). The top of the pull rod (205) is fixedly installed with an installation tube (206), and an outer tube (207) is fixedly installed on the installation tube (206). A bearing (208) is fixedly installed on the top of the outer tube (207), and a protruding rod (209) is fixedly installed on the outer ring of the bearing (208). The protruding rod (209) has the function of keeping the outer tube (207) rotating when the bearing (208) drives the outer tube (207) to rise and fall.

2. A stirrer, comprising the blade adjustment structure as described in claim 1, characterized in that, It also includes a power unit (101), the output end of which is equipped with an output shaft (104), the output shaft (104) is fixedly connected to the upper cover (105), and the bearing (208) and the outer sleeve (207) are both movably sleeved on the outside of the output shaft (104); It also includes a mixing bowl (300) for housing the agitator.

3. The stirrer according to claim 2, characterized in that, The mixing tank (300) is provided with a support mechanism, and an auxiliary mixing mechanism is provided at the bottom of the support mechanism. The auxiliary mixing mechanism includes a mixing rod (306). The bottom of the mixing rod (306) is movably inserted into the bottom of the inner wall of the mixing tank (300). The support mechanism is also provided with a first rotating shaft (303) and a second rotating shaft (304). A bevel gear set (302) is installed between the first rotating shaft (303), the second rotating shaft (304), and the mixing rod (306).

4. A stirrer according to claim 3, characterized in that, The support mechanism includes a mounting bracket (301) mounted on the top of the mixing tank (300), a fixing tube (305) fixedly mounted on the mounting bracket (301), and a second rotating shaft (304) rotatably connected inside the fixing tube (305). A base plate (400) is also fixedly mounted on the mounting bracket (301), and a speed-changing mechanism is provided on the base plate (400).

5. A stirrer according to claim 4, characterized in that, The speed change mechanism includes a support assembly, which includes a fixed plate (401) fixedly connected to the base plate (400). A fixed block (402) is fixedly installed on the fixed plate (401). A slide rail (403) is fixedly installed on the fixed block (402). A push rod assembly (404) is slidably installed on the slide rail (403). The speed change mechanism also includes a speed change component. When the push rod assembly (404) slides along the slide rail (403), it drives the speed change component to change speed.

6. A stirrer according to claim 5, characterized in that, The transmission assembly includes a third shaft (500) and a fourth shaft (505) rotatably connected to the fixed block (402). The third shaft (500) is connected to the second shaft (304), and the fourth shaft (505) is connected to the output shaft (104) via a bevel gear set (302). The power unit (101) drives the second shaft (304) to rotate through the transmission assembly.

7. A stirrer according to claim 6, characterized in that, The transmission assembly further includes a first adapter (501) and a second adapter (504) respectively fixedly installed on the third rotating shaft (500) and the fourth rotating shaft (505). The first adapter (501) and the second adapter (504) are in opposite directions. A transmission wheel (503) is meshed between the first adapter (501) and the second adapter (504). A fixing rod (502) is movably inserted inside the transmission wheel (503). Both ends of the fixing rod (502) are fixedly connected to the fixing block (402). A connecting frame (506) is movably sleeved on the fixing rod (502). A stop rod (507) is fixedly installed on the connecting frame (506). The stop rod (507) is movably connected to the push rod assembly (404).

8. A stirrer according to claim 7, characterized in that, A pushing mechanism is provided on one side of the substrate (400). The pushing mechanism includes a hydraulic cylinder (407). A sleeve (406) is fixedly installed at the output end of the hydraulic cylinder (407). The sleeve (406) is movably sleeved on the protruding rod (209). A pull plate (405) is rotatably connected to one end of the sleeve (406). One end of the pull plate (405) is rotatably connected to the bottom of the push rod assembly (404).

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