Magnesium cement pumping and pressurizing stirrer

Abstract

The invention discloses a magnesium cement pumping and pressurizing stirring machine, and particularly relates to the technical field of magnesium cement pumping, the magnesium cement pumping and pressurizing stirring machine comprises a pressurizing stirring machine body, a stirring assembly, a transmission assembly and a moving assembly; the pressurizing stirrer body comprises a support frame, a pumping machine and a machine body; the pumping machine is arranged on one side of the supporting frame. The machine body is connected with the supporting frame through the stirring assembly. The stirring assembly comprises a servo motor, a transmission shaft, a stirring shaft and a stirring rod; the servo motor is fixedly arranged on the supporting frame through a motor base. The transmission shaft rotationally penetrates through the machine body through a bearing A, is rotationally connected with the supporting frame through a bearing B, and is connected with an output shaft of the servo motor through a transmission assembly; the stirring shaft is movably arranged in the machine body through a moving assembly; the plurality of stirring rods are uniformly and fixedly arranged on the circumferential surface of the stirring shaft; the magnesium cement stirring device is ingenious in design, magnesium cement can be stirred in different directions by enabling the stirring rod to rotate and move back and forth in the horizontal direction, stirring is uniform and sufficient, and the stirring efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of magnesium cement pumping technology, and more specifically, to a magnesium cement pumping pressurized mixer. Background Technology

[0002] Magnesium cement pumping refers to a construction method that uses concrete pumps or pump trucks to transport and pour concrete mixtures along delivery pipelines. This method uses concrete pumps or pump trucks to directly transport concrete mixtures to the pouring site through pipelines, achieving rapid, efficient, and continuous transportation and pouring of concrete.

[0003] The cement mixer disclosed in Chinese Utility Model Patent Publication No. CN202964903U prevents cement slurry from splashing out of the mixing drum, thus saving resources and protecting the environment. The upper end of the cylindrical drum is detachably and sealed to the large-diameter end of the frustum-shaped drum. The small-diameter port of the frustum-shaped drum serves as the feeding port. Both the drum and the motor are mounted on a support frame. The motor is positioned directly above the drum, and its output shaft is connected to the mixing shaft. The lower end of the mixing shaft is located inside the drum, near its bottom. Mixing teeth are positioned inside the drum and fixed to the mixing shaft. A discharge port is located at the bottom of the drum's side wall, and this port is connected to one end of a discharge pipe. This utility model is applicable in the field of construction engineering.

[0004] During the pumping of magnesium cement, a pressure mixer is required to mix the magnesium cement before pressurizing and conveying it. However, existing pressure mixers can only mix magnesium cement in one direction, making it difficult to mix magnesium cement in different directions. This results in insufficient and uneven mixing of magnesium cement, which not only reduces the mixing efficiency of magnesium cement but also affects the performance of the pressure mixer. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a magnesium cement pumping pressure mixer. The technical problem to be solved by the present invention is that the existing pressure mixer can only mix magnesium cement in one direction, and it is difficult to mix magnesium cement in different directions, resulting in insufficient and uneven mixing of magnesium cement. This not only reduces the mixing efficiency of magnesium cement, but also affects the performance of the pressure mixer.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a magnesium cement pumping pressure mixer, comprising a pressure mixer body, a mixing assembly, a transmission assembly, and a moving assembly for magnesium cement processing; the pressure mixer body includes a support frame, a pump for pumping magnesium cement, and a machine body; the pump is arranged on one side of the support frame and connected to the support frame via a delivery pipe; the machine body is connected to the support frame via the mixing assembly, and the machine body is connected to the end of the delivery pipe; the mixing assembly includes a servo motor, a transmission shaft, a mixing shaft, and a mixing rod for mixing magnesium cement; the servo motor is fixed to the support frame via a motor mount; the transmission shaft is rotatably mounted on the machine body via bearing A, the transmission shaft is rotatably connected to the support frame via bearing B, and the transmission shaft is connected to the output shaft of the servo motor via the transmission assembly; the mixing shaft is movably mounted within the machine body via the moving assembly; a plurality of the mixing rods are fixed in a circular array on the circumference of the mixing shaft via connecting arms.

[0007] As a further embodiment of the present invention: the transmission assembly includes a driving wheel, a driven wheel, and a chain; at least one driving wheel is sleeved on the output shaft of the servo motor; at least one driven wheel is sleeved on the transmission shaft, and the driving wheel is connected to the driven wheel via the chain.

[0008] As a further embodiment of the present invention: the moving component includes a moving groove, a movable groove, and a moving block; the moving groove is on the inner wall of the machine body; the movable groove is provided on the side of the stirring shaft near the drive shaft, and the drive shaft is movably connected to the movable groove through a connecting component; the moving block is slidably inserted into the moving groove and fixedly connected to the circumferential surface of the stirring shaft.

[0009] As a further aspect of the present invention: the moving groove is formed by two symmetrically arranged spiral grooves.

[0010] As a further aspect of the present invention: the moving block includes a sliding part and a connecting part; the sliding part slides in the movable groove; the connecting part has a frustum-shaped structure, and the dimension of the connecting part near the stirring shaft is larger than the dimension of the connecting part away from the stirring shaft.

[0011] As a further aspect of the present invention: the connecting assembly includes a connecting groove and a connecting block; the connecting groove is provided in the movable groove; the connecting block is sleeved on the transmission shaft and slides in cooperation with the connecting groove.

[0012] As a further aspect of the present invention: the connecting groove is formed by a plurality of arc-shaped grooves.

[0013] As a further embodiment of the present invention: it also includes a scraping mechanism; the scraping mechanism is arranged on the stirring rod; the scraping mechanism includes a scraping assembly; the scraping assembly includes a receiving groove, a groove, a scraping plate, a fixing block, a sliding groove, a sliding block, and a spring; the stirring rod has a receiving groove; the receiving groove has a groove; the scraping plate is movably disposed in the receiving groove, and the end of the scraping plate extends through the groove to the outside and contacts the inner wall of the machine body; a plurality of fixing blocks are linearly arrayed and fixedly disposed on the inner wall of the receiving groove; the fixing blocks have sliding grooves; the sliding blocks slide through the sliding grooves and are fixedly connected to the scraping plate; the two ends of the spring are fixedly connected to the inner wall of the sliding groove and the sliding block, respectively.

[0014] As a further embodiment of the present invention: the scraping mechanism further includes a blocking component; the blocking component includes a blocking groove and a blocking plate; the blocking groove is provided in the groove; the blocking plate is slidably disposed in the blocking groove, and the end of the blocking plate extends through the blocking groove into the groove.

[0015] As a further aspect of the present invention: the blocking plate has an arc-shaped structure, and the size of the blocking plate is larger than the size of the groove.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention, by setting up a mixing component, a transmission component, and a moving component, uses a pump to deliver slurry into the machine body. Then, a servo motor is started, causing the output shaft of the servo motor to drive the drive wheel to rotate, causing the driven wheel to rotate via a chain, causing the transmission shaft to rotate via bearing B and the support frame, and causing the transmission shaft to rotate via bearing A and the machine body. This causes the mixing shaft to drive three mixing rods to rotate within the machine body via a connecting component, allowing the mixing rods to mix the slurry within the machine body. When the mixing shaft rotates, the moving block slides back and forth within the moving groove. Since the moving groove is composed of two symmetrically arranged spiral grooves, the mixing rods move back and forth within the machine body, and the transmission shaft slides back and forth within the moving groove until the slurry within the machine body is mixed. Finally, the slurry is discharged from the machine body by pressurizing the mixer. Compared with the prior art, this invention is ingeniously designed. By causing the mixing rods to rotate and move back and forth horizontally, magnesium cement can be mixed in different directions, resulting in uniform and thorough mixing with high mixing efficiency.

[0018] 2. This invention, by setting up a scraping assembly, activates a servo motor, causing the servo motor output shaft to rotate in the opposite direction. This causes the stirring rod to rotate in the opposite direction within the machine body and move back and forth. Due to the centrifugal force generated by the rotation of the stirring shaft and stirring rod, the scraping plate slides outward within the receiving groove, causing the sliding block to slide within the sliding groove. This causes the spring to stretch until the scraping plate contacts the inner wall of the machine body. At this point, the scraping plate scrapes and cleans the slurry adhering to the inner wall of the machine body. After cleaning is completed, the servo motor is controlled so that the servo motor output shaft stops rotating. At this point, under the elastic force of the spring, the scraping plate and sliding block return to their original positions.

[0019] 3. By setting up a blocking component, the centrifugal force generated by the rotation of the stirring shaft and stirring rod will cause the blocking plate to slide in the groove and blocking slot until the other side of the blocking plate contacts the other inner wall of the blocking slot. After the blocking plate slides into the blocking slot, the blocking plate will no longer block the extension of the scraper plate. At the same time, the blocking plate can also prevent the slurry in the machine body from entering the receiving tank, so as to avoid the slurry affecting the extension of the scraper plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 This is a cross-sectional view of the body structure of the present invention;

[0023] Figure 4 This is an exploded sectional view of the moving component and the connecting component of the present invention;

[0024] Figure 5 This is a split sectional view of the scraping mechanism of the present invention;

[0025] Figure 6 This is a cross-sectional view of the stirring rod structure of the present invention;

[0026] Figure 7 For the present invention Figure 2 Enlarged view of point A in the middle;

[0027] Figure 8 For the present invention Figure 2 Enlarged diagram of point B in the middle.

[0028] In the picture:

[0029] 1. Pressure mixer body; 2. Mixing assembly; 3. Transmission assembly; 4. Moving assembly; 5. Connecting assembly; 6. Scraper mechanism; 7. Scraping assembly; 8. Blocking assembly;

[0030] 101. Support frame; 102. Pump; 103. Machine body;

[0031] 201. Servo motor; 202. Drive shaft; 203. Stirring shaft; 204. Stirring rod;

[0032] 301. Driving wheel; 302. Driven wheel; 303. Chain;

[0033] 401. Moving slot; 402. Movable slot; 403. Moving block;

[0034] 4031, Sliding part; 4032, Connecting part;

[0035] 501. Connecting groove; 502. Connecting block;

[0036] 701. Receiving groove; 702. Groove; 703. Scraper; 704. Fixing block; 705. Sliding groove; 706. Sliding block; 707. Spring;

[0037] 801, blocking groove; 802, blocking plate. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] like Figures 1 to 8As shown, the present invention provides a magnesium cement pumping pressure mixer, including a pressure mixer body 1 for magnesium cement processing, a mixing assembly 2, a transmission assembly 3, a moving assembly 4, and a connecting assembly 5; the pressure mixer body 1 includes a support frame 101, a pump 102 for pumping magnesium cement, and a machine body 103; the pump 102 is arranged on one side of the support frame 101 and connected to the support frame 101 through a conveying pipe; the machine body 103 is connected to the support frame 101 through the mixing assembly 2, and the machine body 103 is connected to the end of the conveying pipe. To improve the stability of the position of the machine body 103, a support seat can be provided between the machine body 103 and the support frame 101. To support the machine body 103; the mixing assembly 2 includes a servo motor 201, a drive shaft 202, a mixing shaft 203, and mixing rods 204 for mixing magnesium cement; the servo motor 201 is fixed to the support frame 101 via a motor base; the drive shaft 202 is rotatably mounted on the machine body 103 via bearing A, and the drive shaft 202 is rotatably connected to the support frame 101 via bearing B, and the drive shaft 202 is connected to the output shaft of the servo motor 201 via a transmission assembly 3; the mixing shaft 203 is movably mounted inside the machine body 103 via a moving assembly 4; the three mixing rods 204 are fixed in a circular array on the circumferential surface of the mixing shaft 203 via connecting arms;

[0040] The transmission assembly 3 includes a drive wheel 301, a driven wheel 302, and a chain 303; the two drive wheels 301 are arranged in a linear array and sleeved on the output shaft of the servo motor 201; the two driven wheels 302 are arranged in a linear array and sleeved on the transmission shaft 202, and the drive wheels 301 are connected to the driven wheels 302 through the chain 303.

[0041] The moving component 4 includes a moving groove 401, a movable groove 402, and a moving block 403; the moving groove 401 is on the inner wall of the body 103; the movable groove 402 is provided on the side of the stirring shaft 203 near the drive shaft 202, and the drive shaft 202 is movably connected to the movable groove 402 through the connecting component 5; the moving block 403 slides through the moving groove 401 and is fixedly connected to the circumferential surface of the stirring shaft 203; the moving groove 401 is formed by two symmetrically arranged spiral grooves; when the moving block 403 slides to the inner wall of the moving groove 401, the stirring shaft 203 does not contact the inner wall of the body 103.

[0042] This invention, by setting up a stirring assembly 2, a transmission assembly 3, and a moving assembly 4, uses a pump 102 to transport slurry into the machine body 103. Then, the servo motor 201 is started, causing the output shaft of the servo motor 201 to drive the drive wheel 301 to rotate, causing the driven wheel 302 to rotate via the chain 303. This causes the transmission shaft 202 to rotate with the support frame 101 via bearing B, and then with the machine body 103 via bearing A. The stirring shaft 203, through the connecting assembly 5, drives three stirring rods 204 to rotate within the machine body 103, allowing the stirring rods 204 to stir the slurry within the machine body 103. When rotation occurs, the moving block 403 will slide back and forth in the moving groove 401. Since the moving groove 401 is composed of two symmetrically arranged spiral grooves, the stirring rod 204 will move back and forth in the machine body 103, and the transmission shaft 202 will slide back and forth in the moving groove 402 until the slurry in the machine body 103 is stirred. Then, the slurry in the machine body 103 can be discharged by pressurizing the pressurized mixer. Compared with the prior art, the present invention is ingeniously designed. By causing the stirring rod 204 to rotate and move back and forth in the horizontal direction, magnesium cement can be stirred in different directions, and the stirring is uniform and thorough with high stirring efficiency.

[0043] As a preferred embodiment, the moving block 403 includes a sliding part 4031 and a connecting part 4032; the sliding part 4031 slides in the movable groove 402; the connecting part 4032 has a frustum-shaped structure, and the dimension of the connecting part 4032 on the side closer to the stirring shaft 203 is larger than the dimension of the connecting part 4032 on the side farther away from the stirring shaft 203.

[0044] The present invention sets a movable block 403 and sets the connecting part 4032 as a frustum-shaped structure, so as to increase the contact area between the connecting part 4032 and the stirring shaft 203 and improve the connection strength between the connecting part 4032 and the stirring shaft 203.

[0045] As a preferred embodiment, the connecting component 5 includes a connecting groove 501 and a connecting block 502; the connecting groove 501 is provided in the movable groove 402; the connecting block 502 is sleeved on the drive shaft 202 and slides in cooperation with the connecting groove 501; the connecting groove 501 is formed by a plurality of bow-shaped grooves.

[0046] The present invention, by setting the connecting component 5, sets the connecting groove 501 as a plurality of arc-shaped grooves, which not only extends the contact area between the connecting block 502 and the connecting groove 501, preventing the slurry in the machine body 103 from seeping into the movable groove 402 through the gap between the connecting block 502 and the connecting groove 501, thus affecting the back-and-forth movement of the stirring shaft 203 and the stirring rod 204, but also allows the stirring shaft 203 to rotate when the drive shaft 202 rotates, by pressing the inner wall of the connecting groove 501 through the connecting block 502.

[0047] As a preferred embodiment, it also includes a scraping mechanism 6; the scraping mechanism 6 is arranged on the stirring rod 204; the scraping mechanism 6 includes a scraping assembly 7; the scraping assembly 7 includes a receiving groove 701, a groove 702, a scraping plate 703, a fixing block 704, a sliding groove 705, a sliding block 706, and a spring 707; the stirring rod 204 has a receiving groove 701; the receiving groove 702 is formed in the receiving groove 701; the scraping plate 703 is movably disposed in the receiving groove 701, and the end of the scraping plate 703 extends through the groove 702 to the outside and contacts the inner wall of the machine body 103; three fixing blocks 704 are linearly arrayed and fixed on the inner wall of the receiving groove 701; the fixing block 704 has a sliding groove 705; the sliding block 706 slides through the sliding groove 705 and is fixedly connected to the scraping plate 703; the two ends of the spring 707 are fixedly connected to the inner wall of the sliding groove 705 and the sliding block 706, respectively.

[0048] This invention, by setting up a scraping assembly 7, activates a servo motor 201, causing the output shaft of the servo motor 201 to rotate in the opposite direction. This causes the stirring rod 204 to rotate in the opposite direction and move back and forth within the machine body 103. Due to the centrifugal force generated by the rotation of the stirring shaft 203 and the stirring rod 204, the scraping plate 703 slides outward within the receiving groove 701, and the sliding block 706 slides within the sliding groove 705. This causes the spring 707 to stretch under force until the scraping plate 703 contacts the inner wall of the machine body 103. At this point, the scraping plate 703 scrapes and cleans the slurry adhering to the inner wall of the machine body 103. After cleaning is completed, the servo motor 201 is controlled so that its output shaft stops rotating. Then, under the elastic force of the spring 707, the scraping plate 703 and the sliding block 706 return to their original positions.

[0049] As a preferred embodiment, the scraping mechanism 6 further includes a blocking component 8; the blocking component 8 includes a blocking groove 801 and a blocking plate 802; the blocking groove 801 is provided in the groove 702; the blocking plate 802 is slidably disposed in the blocking groove 801, and the end of the blocking plate 802 extends through the blocking groove 801 into the groove 702; the blocking plate 802 has an arc-shaped structure, and the size of the blocking plate 802 is larger than the size of the groove 702. When the side of the blocking plate 802 contacts the inner wall of the groove 702, the other side of the blocking plate 802 is still in the blocking groove 801; when the scraping plate 703 contacts the inner wall of the body 103, the side of the sliding block 706 near the spring 707 is still in the sliding groove 705.

[0050] By setting up the blocking component 8, the centrifugal force generated by the rotation of the stirring shaft 203 and the stirring rod 204 will cause the blocking plate 802 to slide in the groove 702 and the blocking slot 801 until the other side of the blocking plate 802 contacts the other inner wall of the blocking slot 801. After the blocking plate 802 slides into the blocking slot 801, the blocking plate 802 no longer blocks the extension of the scraping plate 703. At the same time, the blocking plate 802 can also prevent the slurry in the machine body 103 from entering the receiving tank 701, so as to avoid the slurry affecting the extension of the scraping plate 703.

[0051] Working principle of this invention: In use, the slurry is transported into the machine body 103 by the pump 102. Then, the servo motor 201 is started, causing the output shaft of the servo motor 201 to drive the drive wheel 301 to rotate, causing the driven wheel 302 to rotate via the chain 303, causing the transmission shaft 202 to rotate with the support frame 101 via bearing B, and causing the transmission shaft 202 to rotate with the machine body 103 via bearing A. This causes the stirring shaft 203 to drive the three stirring rods 204 to rotate within the machine body 103 via the connecting assembly 5, allowing the stirring rods 204 to push the slurry within the machine body 103. When the stirring shaft 203 rotates, the moving block 403 slides back and forth in the moving groove 401. Since the moving groove 401 is composed of two symmetrically arranged spiral grooves, the stirring rod 204 moves back and forth in the machine body 103, causing the drive shaft 202 to slide back and forth in the movable groove 402, and the connecting block 502 to slide back and forth in the connecting groove 501. Due to the centrifugal force generated by the rotation of the stirring shaft 203 and the stirring rod 204, the side of the baffle plate 802 is always in contact with the inner wall of the groove 702 until the slurry in the machine body 103 is stirred. After mixing, the slurry inside the machine body 103 is discharged by pressurizing the mixer. When cleaning the slurry adhering to the inner wall of the machine body 103, the servo motor 201 is started, causing its output shaft to rotate in the opposite direction. This causes the stirring rod 204 to rotate in the opposite direction and move back and forth within the machine body 103. The centrifugal force generated by the reverse rotation of the stirring shaft 203 and the stirring rod 204 causes the baffle plate 802 to slide within the groove 702 and the blocking groove 801 until the other side of the baffle plate 802 contacts the other inner wall of the blocking groove 801. At this point, under centrifugal force... Under the action of the spring, the scraper 703 will slide outward in the receiving groove 701, the sliding block 706 will slide in the sliding groove 705, and the spring 707 will be stretched until the scraper 703 contacts the inner wall of the machine body 103. At this time, the scraper 703 will scrape and clean the slurry adhering to the inner wall of the machine body 103. After cleaning, the servo motor 201 will be controlled so that the output shaft of the servo motor 201 will no longer rotate. At this time, under the elastic force of the spring 707, the scraper 703 and the sliding block 706 will return to their original positions. When using it again, the above operation can be repeated.

[0052] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0053] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A magnesium cement pumping and pressurizing mixer, characterized in that, The system includes a pressure mixer body (1), a mixing assembly (2), a transmission assembly (3), and a moving assembly (4) for processing magnesium cement. The pressure mixer body (1) includes a support frame (101), a pump (102) for pumping magnesium cement, and a machine body (103). The pump (102) is arranged on one side of the support frame (101) and connected to the support frame (101) through a conveying pipe. The machine body (103) is connected to the support frame (101) through the mixing assembly (2), and the machine body (103) is connected to the end of the conveying pipe. The mixing assembly (2) includes a servo motor (201), a transmission shaft (202), and a mixing shaft. (203) and a stirring rod (204) for mixing magnesium cement; the servo motor (201) is fixed on the support frame (101) through a motor base; the transmission shaft (202) is rotatably mounted on the machine body (103) through bearing A, the transmission shaft (202) is rotatably connected to the support frame (101) through bearing B, and the transmission shaft (202) is connected to the output shaft of the servo motor (201) through a transmission assembly (3); the stirring shaft (203) is movably mounted in the machine body (103) through a moving assembly (4); a plurality of the stirring rods (204) are fixed in a ring array on the circumference of the stirring shaft (203) through connecting arms.

2. The magnesium cement pumping and pressurizing mixer according to claim 1, characterized in that, The transmission assembly (3) includes a drive wheel (301), a driven wheel (302), and a chain (303); at least one drive wheel (301) is sleeved on the output shaft of the servo motor (201); at least one driven wheel (302) is sleeved on the transmission shaft (202), and the drive wheel (301) is connected to the driven wheel (302) via the chain (303).

3. The magnesium cement pumping and pressurizing mixer according to claim 2, characterized in that, The moving component (4) includes a moving groove (401), a movable groove (402), and a moving block (403); the moving groove (401) is on the inner wall of the body (103); the movable groove (402) is provided on the side of the stirring shaft (203) near the drive shaft (202), and the drive shaft (202) is movably connected to the movable groove (402) through the connecting component (5); the moving block (403) slides through the moving groove (401) and is fixedly connected to the circumferential surface of the stirring shaft (203).

4. The magnesium cement pumping and pressurizing mixer according to claim 3, characterized in that, The moving groove (401) is formed by two symmetrically arranged spiral grooves.

5. A magnesium cement pumping and pressurizing mixer according to claim 3, characterized in that, The moving block (403) includes a sliding part (4031) and a connecting part (4032); the sliding part (4031) slides in the movable groove (402); the connecting part (4032) has a frustum-shaped structure, and the dimension of the connecting part (4032) on the side closer to the stirring shaft (203) is larger than the dimension of the connecting part (4032) on the side farther away from the stirring shaft (203).

6. A magnesium cement pumping and pressurizing mixer according to claim 3, characterized in that, The connecting component (5) includes a connecting groove (501) and a connecting block (502); the connecting groove (501) is provided in the movable groove (402); the connecting block (502) is sleeved on the transmission shaft (202) and slides in cooperation with the connecting groove (501).

7. A magnesium cement pumping and pressurizing mixer according to claim 6, characterized in that, The connecting groove (501) is composed of several arc-shaped grooves.

8. A magnesium cement pumping and pressurizing mixer according to claim 1, characterized in that, It also includes a scraping mechanism (6); the scraping mechanism (6) is arranged on the stirring rod (204); the scraping mechanism (6) includes a scraping assembly (7); the scraping assembly (7) includes a receiving groove (701), a groove (702), a scraping plate (703), a fixing block (704), a sliding groove (705), a sliding block (706), and a spring (707); the stirring rod (204) has a receiving groove (701); the receiving groove (701) has a groove (702); the scraping plate (703) is movably mounted on the stirring rod (204). The scraper (703) extends through the groove (702) to the outside and contacts the inner wall of the body (103); a plurality of fixed blocks (704) are linearly arrayed and fixed on the inner wall of the receiving groove (701); a sliding groove (705) is provided on the fixed block (704); the sliding block (706) slides through the sliding groove (705) and is fixedly connected to the scraper (703); the two ends of the spring (707) are fixedly connected to the inner wall of the sliding groove (705) and the sliding block (706) respectively.

9. A magnesium cement pumping and pressurizing mixer according to claim 8, characterized in that, The scraping mechanism (6) further includes a blocking component (8); the blocking component (8) includes a blocking groove (801) and a blocking plate (802); the blocking groove (801) is provided in the groove (702); the blocking plate (802) is slidably disposed in the blocking groove (801), and the end of the blocking plate (802) extends through the blocking groove (801) into the groove (702).

10. A magnesium cement pumping and pressurizing mixer according to claim 9, characterized in that, The baffle plate (802) has an arc-shaped structure, and the size of the baffle plate (802) is larger than the size of the groove (702).

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