Vacuum preloading boundary sealing device for soft soil foundation treatment

Abstract

The invention relates to the technical field of soft soil foundation treatment vacuum preloading, and discloses a soft soil foundation treatment vacuum preloading boundary sealing device which comprises a movable plate, supporting plates are fixedly mounted on the inner wall of the left side and the inner wall of the right side of the movable plate correspondingly, and arc-shaped internal thread blocks are fixedly mounted at the ends, close to each other, of the two supporting plates; a hollow threaded cylinder is installed in the arc-shaped internal threaded block in a threaded mode, the cleaning mechanism comprises a strip-shaped limiting groove formed in the inner wall of the hollow threaded cylinder, an L-shaped limiting strip is installed in the strip-shaped limiting groove in a sliding mode, and an air draft cylinder is installed in the hollow threaded cylinder in a sliding mode. A first transmission gear block drives a circular plate to rotate, at the moment, fine soil enters a hollow threaded cylinder and then is adsorbed to the bottom of the circular plate, at the moment, rotation of the circular plate is matched with an L-shaped limiting strip to remove the fine soil on the bottom of the circular plate, and the situation that normal extraction work of an air extraction cylinder is affected due to blockage of filter holes is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum preloading equipment for soft soil foundation treatment, in particular to a vacuum preloading boundary sealing device for soft soil foundation treatment. Background Art

[0002] During the vacuum preloading process, the sealing device on the soft foundation may have some tiny weak points, such as tiny damage to the sealing film, places where the sealing groove is not filled so densely, etc. Under normal large pressure differences, although the outside air has pressure, it is not enough to break through these weak points and enter the treatment area.

[0003] As the vacuum pump becomes clogged, the vacuum degree will decrease and the pressure difference between the inside and outside will decrease. The relatively large pressure of the outside air will be more capable of breaking through these weak points and entering the foundation treatment area, destroying the sealing effect and affecting the normal progress of the vacuum preloading treatment of the soft soil foundation. Summary of the invention

[0004] The purpose of the present invention is to provide a vacuum preloading boundary sealing device for soft soil foundation treatment, so as to solve the problem that as the vacuum pump is blocked, the vacuum degree will be reduced, the pressure difference between the inside and the outside will be reduced, and the relatively large pressure of the outside air will be more capable of breaking through these weak points, thereby entering the foundation treatment area, destroying the sealing effect, and affecting the normal vacuum preloading treatment of the soft soil foundation.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a vacuum preloading boundary sealing device for soft soil foundation treatment, comprising a movable plate, support plates are fixedly installed on the left inner wall and the right inner wall of the movable plate respectively, arc-shaped internal thread blocks are fixedly installed on the ends of the two support plates close to each other, and the internal threads of the arc-shaped internal thread blocks are installed with hollow threaded cylinders, and also includes:

[0007] The cleaning mechanism includes a strip-shaped limit groove opened on the inner wall of the hollow threaded cylinder, an L-shaped limit strip is slidably installed in the strip-shaped limit groove, an exhaust cylinder is slidably installed in the hollow threaded cylinder, the top of the exhaust cylinder extends to the outside of the hollow threaded cylinder, a circular plate is rotatably installed on the bottom end of the exhaust cylinder, the L-shaped limit strip is in contact with the top and bottom ends of the circular plate, a plurality of transmission gear blocks 1 are fixedly installed on the outer wall of the exhaust cylinder, and a plurality of transmission gear blocks 2 are fixedly installed on the inner wall of the hollow threaded cylinder.

[0008] Further, an air inlet pipe is fixedly installed at the top end of the hollow threaded cylinder. A U-shaped mounting plate is fixedly installed on the inner wall of the movable plate. A vacuum pump is fixedly installed at the top of the U-shaped mounting plate. The output end of the vacuum pump is fixedly connected to the air inlet pipe. An air outlet pipe is fixedly installed on the back of the vacuum pump, and the end of the air outlet pipe penetrates through the movable plate.

[0009] Further, a clogging prevention mechanism is arranged below the hollow threaded cylinder. The clogging prevention mechanism includes a drill bit arranged below the hollow threaded cylinder. An isosceles trapezoidal block is fixedly installed at the top of the drill bit, and the top of the isosceles trapezoidal block is in contact with the circular plate.

[0010] Further, a plurality of grooves are formed on the outer wall of the hollow threaded cylinder. A plurality of circular holes are respectively formed on the inner walls of the mutually adjacent sides of the plurality of grooves, and all the plurality of circular holes communicate with the inside of the hollow threaded cylinder.

[0011] Further, a plurality of T-shaped limit sliding grooves are formed on the outer wall of the hollow threaded cylinder. Limit sliding blocks are respectively slidably installed in the plurality of T-shaped limit sliding grooves. The bottom ends of the plurality of limit sliding blocks are fixedly connected to the drill bit. Limit cross blocks are respectively fixedly installed at the top ends of the plurality of limit sliding blocks, and the plurality of limit cross blocks are respectively clamped into the plurality of T-shaped limit sliding grooves and are respectively slidably connected to the plurality of T-shaped limit sliding grooves.

[0012] Further, a transmission mechanism is arranged on the U-shaped mounting plate. The transmission mechanism includes a driving motor fixedly installed on the inner wall of the bottom of the U-shaped mounting plate. A rotating shaft is fixedly installed on the output shaft of the driving motor. The top end of the rotating shaft is rotatably connected to the U-shaped mounting plate. A plurality of first toothed plates are fixedly installed on the outer wall of the rotating shaft. A plurality of second toothed plates are fixedly installed on the outer wall of the hollow threaded cylinder, and the plurality of second toothed plates are meshed with the plurality of first toothed plates.

[0013] Further, a circular ring is rotatably sleeved on the outer wall of the hollow threaded cylinder. A U-shaped plate is fixedly installed on the outer wall of the circular ring. A limit cross plate is fixedly installed on the right side of the U-shaped plate. The limit cross plate penetrates through the arc-shaped internal threaded block and is slidably connected to the arc-shaped internal threaded block. L-shaped movable plates are respectively fixedly installed on the left side and the right side of the U-shaped plate.

[0014] Further, adaptation mechanisms are respectively arranged on the two support plates. The adaptation mechanism includes a rectangular rod slidably installed on the support plate. The rectangular rod penetrates through the support plate and is slidably connected to the support plate. A circular adaptation plate is fixedly installed at the top end of the rectangular rod. An adaptation spring is sleeved on the rectangular rod. The top end of the adaptation spring is fixedly connected to the circular adaptation plate, and the bottom end of the adaptation spring is fixedly connected to the support plate.

[0015] The present invention has the following beneficial effects:

[0016] (1) The present invention provides a vacuum preloading boundary sealing device for treating soft soil foundation. The corresponding drill bit will stop descending. At this time, under the descending action of the hollow threaded barrel, the hollow threaded barrel will drive the transmission gear block 1 to mesh with the transmission gear block 2. The rotation of the hollow threaded barrel will drive the transmission gear block 2 to rotate. The transmission gear block 2 will drive the transmission gear block 1 to rotate. The transmission gear block 1 will drive the circular plate to rotate. At this time, fine soil will enter the hollow threaded barrel and will be adsorbed to the bottom of the circular plate. At this time, the rotation of the circular plate in conjunction with the L-shaped limit strip will clean up the fine soil on the bottom of the circular plate, thereby preventing the filter hole from being blocked and affecting the normal extraction work of the exhaust cylinder;

[0017] (2) A vacuum preloading boundary sealing device for treating soft soil foundation of the present invention is used. The device is moved to the ground with sealing measures, and then a driving motor is started. The driving motor drives the rotating shaft to rotate, and the rotating shaft drives a plurality of tooth plates 1 to rotate. The tooth plate 1 drives the hollow threaded cylinder to rotate under the action of a plurality of tooth plates 2. The hollow threaded cylinder descends under the action of the threads of the arc-shaped internal thread block. At this time, the plurality of tooth plates 2 will slide downward synchronously under the meshing of the tooth plate 1, and will not affect the normal descent of the hollow threaded cylinder. At this time, the hollow threaded cylinder is in a state of descending and rotating. The hollow threaded cylinder will synchronously drive the drill bit to rotate and descend under the action of the limit sliding block. When the drill bit contacts the ground, the reaction force of the ground will cause the limit sliding block to rise. At this time, the drill bit will contact the bottom of the circular hole during the rising process of the limit sliding block. At this point, the drill bit will drill a hole in the soft soil foundation during the continuous rotation and descent, so that the hollow threaded cylinder extends under the foundation to fully extract moisture and air in the foundation for vacuum preloading.

[0018] (3) The present invention provides a vacuum preloading boundary sealing device for treating soft soil foundation. After the hollow threaded cylinder enters the interior of the foundation, since a plurality of grooves are provided on the outer wall of the hollow threaded cylinder, the soft soil will enter the grooves during the descent of the hollow threaded cylinder, and the soil entering the grooves will not be squeezed by the hollow threaded cylinder and the soil at the bottom of the foundation and will not be compacted. During the process of starting the vacuum pump for vacuum extraction, the moisture in the foundation will enter the hollow threaded cylinder from the grooves and the circular holes, and then be extracted from the filter holes on the circular plate to achieve the effect of vacuum preloading. At this time, the loose soil in the grooves can serve as a better filtering material, reducing the amount of fine particles entering the circular holes and causing blockage. In addition, the design of the grooves can increase the extraction area and improve the extraction efficiency.

[0019] (4) In a vacuum preloading boundary sealing device for soft soil foundation treatment according to the present invention, during the descent of the hollow threaded cylinder, the circular plate will also leave the isosceles trapezoidal block. Correspondingly, the second driving tooth block on the hollow threaded cylinder will synchronously descend with the hollow threaded cylinder. When the hollow threaded cylinder descends, it will drive the circular ring to descend, the circular ring will drive the C-shaped plate to descend, and the C-shaped plate will drive the L-shaped movable plate to descend. When the L-shaped movable plate descends, it will contact the circular adaptor plate and push the circular adaptor plate to descend. At this time, the adaption spring undergoes a compressive deformation. After the thread on the hollow threaded cylinder disengages from the arc-shaped internal thread block, at this time, under the elastic force of the adaption spring, the hollow threaded cylinder will be in a semi-disengaged thread state. At this time, the hollow threaded cylinder will not descend but only rotate.

[0020] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the partial side sectional structure of the present invention;

[0024] Figure 3 For the present invention Figure 2 The enlarged schematic diagram of A in it;

[0025] Figure 4 It is a schematic diagram of the partial sectional structure of the present invention;

[0026] Figure 5 For the present invention Figure 4 The enlarged schematic diagram of B in it;

[0027] Figure 6 It is a schematic diagram of the partial back sectional structure of the present invention;

[0028] Figure 7 It is a schematic diagram of the partial structure of the present invention;

[0029] Figure 8 For the present invention Figure 6 The enlarged schematic diagram of C in it.

[0030] In the drawings, the list of components represented by each reference numeral is as follows:

[0031] In the figure: 1. Movable plate; 2. Support plate; 3. Arc-shaped internal thread block; 4. Hollow thread cylinder; 5. Cleaning mechanism; 501. Strip-shaped limit groove; 502. L-shaped limit strip; 503. Air extraction cylinder; 5031. Circular plate; 504. Filter hole; 505. Transmission gear block one; 506. Transmission gear block two; 507. Air inlet pipe; 508. C-shaped mounting plate; 509. Vacuum pump; 510. Air outlet pipe; 6. Anti-blocking mechanism; 601. Drill bit; 602. Isosceles trapezoidal block; 603. Groove; 604. Circular hole; 605. T-shaped limit sliding groove; 606. Limit sliding block; 607. Limit cross block; 7. Transmission mechanism; 701. Driving motor; 702. Rotating shaft; 703. Tooth plate one; 704. Tooth plate two; 705. Circular ring; 706. C-shaped plate; 707. Limit cross plate; 708. L-shaped movable plate; 8. Adaptation mechanism; 801. Rectangular rod; 802. Circular adaptation plate; 803. Adaptation spring. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1 - Figure 8 As shown, the present invention is a vacuum preloading boundary sealing device for soft soil foundation treatment, including a movable plate 1. Support plates 2 are fixedly installed on the left inner wall and the right inner wall of the movable plate 1 respectively. Arc-shaped internal thread blocks 3 are fixedly installed at one end of the two support plates 2 close to each other. A hollow thread cylinder 4 is installed with internal threads in the arc-shaped internal thread block 3. It further includes:

[0034] A cleaning mechanism 5, the cleaning mechanism 5 includes a strip-shaped limit groove 501 opened on the inner wall of the hollow thread cylinder 4. An L-shaped limit strip 502 is slidably installed in the strip-shaped limit groove 501. An air extraction cylinder 503 is slidably installed in the hollow thread cylinder 4. The top end of the air extraction cylinder 503 extends outside the hollow thread cylinder 4. A circular plate 5031 is rotatably installed at the bottom end of the air extraction cylinder 503. The L-shaped limit strip 502 is in contact with the top end and the bottom end of the circular plate 5031. A number of transmission gear blocks one 505 are fixedly installed on the outer wall of the air extraction cylinder 503. A number of transmission gear blocks two 506 are fixedly installed on the inner wall of the hollow thread cylinder 4.

[0035] As Figure 2As shown, an air inlet pipe 507 is fixedly installed at the top of the hollow threaded cylinder 4. A U-shaped mounting plate 508 is fixedly installed on the inner wall of the movable plate 1. A vacuum pump 509 is fixedly installed at the top of the U-shaped mounting plate 508. The output end of the vacuum pump 509 is fixedly connected to the air inlet pipe 507. An air outlet pipe 510 is fixedly installed on the back of the vacuum pump 509, and the end of the air outlet pipe 510 penetrates through the movable plate 1.

[0036] When the vacuum pump 509 is started for vacuum extraction, the vacuum extraction will pass through the air inlet pipe 507 and the air extraction cylinder 503, and then through the filter holes 504 on the circular plate 5031 to extract into the hollow threaded cylinder 4.

[0037] As Figure 7 shown, a clogging prevention mechanism 6 is arranged below the hollow threaded cylinder 4. The clogging prevention mechanism 6 includes a drill bit 601 arranged below the hollow threaded cylinder 4. An isosceles trapezoidal block 602 is fixedly installed at the top of the drill bit 601, and the top of the isosceles trapezoidal block 602 is in contact with the circular plate 5031.

[0038] After the extraction work is completed, a large amount of soil will fall on the top of the drill bit 601. During the rising process of the hollow threaded cylinder 4, the distance between the circular plate 5031 and the isosceles trapezoidal block 602 will also get closer and closer. After the drill bit 601 leaves the foundation, the circular plate 5031 will continuously squeeze the soil in the hollow threaded cylinder 4. Under the action of the isosceles trapezoidal block 602, the soil will separate to both sides of the isosceles trapezoidal block 602 and break away from the drill bit 601, thus achieving the effect of self-cleaning the soil.

[0039] As Figure 8 shown, a plurality of grooves 603 are formed on the outer wall of the hollow threaded cylinder 4. A plurality of circular holes 604 are respectively formed on the inner walls of the mutually adjacent sides of the plurality of grooves 603, and the plurality of circular holes 604 are all communicated with the inside of the hollow threaded cylinder 4.

[0040] During the process of starting the vacuum pump 509 for vacuum extraction, the moisture in the foundation will enter the hollow threaded cylinder 4 from the grooves 603 and the circular holes 604, and then be extracted from the filter holes 504 on the circular plate 5031 to achieve the effect of vacuum preloading.

[0041] As Figure 7 shown, a plurality of T-shaped limiting sliding grooves 605 are formed on the outer wall of the hollow threaded cylinder 4. A limiting sliding block 606 is respectively slidably installed in each of the plurality of T-shaped limiting sliding grooves 605. The bottom ends of the plurality of limiting sliding blocks 606 are fixedly connected to the drill bit 601. The top ends of the plurality of limiting sliding blocks 606 are respectively fixedly installed with a limiting cross block 607, and the plurality of limiting cross blocks 607 are respectively clamped into the plurality of T-shaped limiting sliding grooves 605 and are respectively slidably connected with the plurality of T-shaped limiting sliding grooves 605.

[0042] The hollow threaded cylinder 4 will drive the drill bit 601 to rotate and descend synchronously under the action of the limit sliding block 606. When the drill bit 601 touches the ground, the reaction force of the ground will cause the limit sliding block 606 to rise. At this time, the drill bit 601 will touch the bottom of the circular hole 604 during the rising process of the limit sliding block 606. Thus, the drill bit 601 will drill the soft soil foundation during the continuous rotation and descent process, enabling the hollow threaded cylinder 4 to extend below the foundation to fully extract water and air in the foundation for vacuum preloading work.

[0043] As Figure 2 shown, a transmission mechanism 7 is provided on the C-shaped mounting plate 508. The transmission mechanism 7 includes a driving motor 701 fixedly installed on the inner wall of the bottom of the C-shaped mounting plate 508. A rotating shaft 702 is fixedly installed on the output shaft of the driving motor 701. The top end of the rotating shaft 702 is rotatably connected to the C-shaped mounting plate 508. A plurality of first toothed plates 703 are fixedly installed on the outer wall of the rotating shaft 702. A plurality of second toothed plates 704 are fixedly installed on the outer wall of the hollow threaded cylinder 4. The plurality of second toothed plates 704 are engaged with the plurality of first toothed plates 703.

[0044] The driving motor 701 drives the rotating shaft 702 to rotate. The rotating shaft 702 drives the plurality of first toothed plates 703 to rotate. The first toothed plates 703 will drive the hollow threaded cylinder 4 to rotate under the action of the plurality of second toothed plates 704. The hollow threaded cylinder 4 will descend under the thread action of the arc-shaped internal threaded block 3. At this time, the plurality of second toothed plates 704 will slide downward synchronously under the engagement of the first toothed plates 703, without affecting the normal descent of the hollow threaded cylinder 4.

[0045] As Figure 1 and Figure 2 shown, a circular ring 705 is rotatably sleeved on the outer wall of the hollow threaded cylinder 4. A C-shaped plate 706 is fixedly installed on the outer wall of the circular ring 705. A limit cross plate 707 is fixedly installed on the right side of the C-shaped plate 706. The limit cross plate 707 penetrates through the arc-shaped internal threaded block 3 and is slidably connected to the arc-shaped internal threaded block 3. L-shaped movable plates 708 are fixedly installed on the left and right sides of the C-shaped plate 706 respectively.

[0046] When the hollow threaded cylinder 4 descends, it will drive the circular ring 705 to descend. The circular ring 705 drives the C-shaped plate 706 to descend. The C-shaped plate 706 will drive the L-shaped movable plates 708 to descend.

[0047] As Figure 1As shown, an adaptation mechanism 8 is respectively provided on the two support plates 2, and the adaptation mechanism 8 includes a rectangular rod 801 slidably mounted on the support plate 2, the rectangular rod 801 penetrates the support plate 2 and is slidably connected to the support plate 2, a circular adaptation plate 802 is fixedly mounted on the top of the rectangular rod 801, an adaptation spring 803 is sleeved on the rectangular rod 801, the top of the adaptation spring 803 is fixedly connected to the circular adaptation plate 802, and the bottom end of the adaptation spring 803 is fixedly connected to the support plate 2.

[0048] When the L-shaped movable plate 708 descends, it will contact the circular adaptation plate 802 and push the circular adaptation plate 802 to descend. At this time, the adaptation spring 803 is compressed and deformed. After the thread on the hollow threaded cylinder 4 is disengaged from the arc-shaped internal thread block 3, the hollow threaded cylinder 4 will be in a semi-disengaged thread state under the elastic force of the adaptation spring 803. At this time, the hollow threaded cylinder 4 will not descend but will only rotate.

[0049] When in use, the device is moved to the ground with good sealing measures, and then the driving motor 701 is started. The driving motor 701 drives the rotating shaft 702 to rotate, and the rotating shaft 702 drives several tooth plates 1 703 to rotate. The tooth plate 1 703 will drive the hollow threaded cylinder 4 to rotate under the action of several tooth plates 2 704, and the hollow threaded cylinder 4 will descend under the action of the threads of the arc-shaped internal thread block 3. At this time, several tooth plates 2 704 will synchronously slide downward under the meshing of tooth plate 1 703, and will not affect the normal descent of the hollow threaded cylinder 4. At this time, the hollow threaded cylinder 4 is in a state of rotating while descending. The hollow threaded cylinder 4 will synchronously drive the drill bit 601 to rotate and descend under the action of the limiting sliding block 606. When the drill bit 601 contacts the ground, the reaction force of the ground will cause the limiting sliding block 606 to rise. At this time, the drill bit 601 will contact the limiting sliding block 606 during the rising process. At the bottom of the circular hole 604, the drill bit 601 will drill a hole in the soft soil foundation during the continuous rotation and descent process, so that the hollow threaded cylinder 4 extends under the foundation to fully extract the moisture and air in the foundation for vacuum preloading; after the hollow threaded cylinder 4 enters the interior of the foundation, since a plurality of grooves 603 are provided on the outer wall of the hollow threaded cylinder 4, the soft soil will enter the grooves 603 during the descent of the hollow threaded cylinder 4, and the soil entering the grooves 603 will not be squeezed by the hollow threaded cylinder 4 and the soil at the bottom of the foundation, and will not be compacted. In the process of starting the vacuum pump 509 for vacuum extraction, the moisture in the foundation will enter the hollow threaded cylinder 4 from the grooves 603 and the circular hole 604, and then be extracted from the filter holes 504 on the circular plate 5031 to achieve the effect of vacuum preloading. At this time, the loose soil in the grooves 603 can be used as a better filtering material;

[0050] During the downward movement of the hollow threaded cylinder 4, the circular plate 5031 will also move away from the isosceles trapezoidal block 602. Accordingly, the second transmission tooth block 506 on the hollow threaded cylinder 4 will synchronously descend with the hollow threaded cylinder 4. When the hollow threaded cylinder 4 descends, it will drive the circular ring 705 to descend, and the circular ring 705 will drive the C-shaped plate 706 to descend. The C-shaped plate 706 will drive the L-shaped movable plate 708 to descend. When the L-shaped movable plate 708 descends, it will contact the circular adaptor plate 802 and push the circular adaptor plate 802 downward. At this time, the adaptor spring 803 undergoes a compressive deformation. After the threads on the hollow threaded cylinder 4 disengage from the arc-shaped internal thread block 3, at this time, under the elastic force of the adaptor spring 803, the hollow threaded cylinder 4 will be in a semi-disengaged thread state. At this time, the hollow threaded cylinder 4 will not descend but only rotate; accordingly, the drill bit 601 will stop descending. At this time, under the downward action of the hollow threaded cylinder 4, the hollow threaded cylinder 4 will drive the first transmission tooth block 505 to engage with the second transmission tooth block 506. The rotation of the hollow threaded cylinder 4 will drive the second transmission tooth block 506 to rotate, the second transmission tooth block 506 will drive the first transmission tooth block 505 to rotate, and the first transmission tooth block 505 will drive the circular plate 5031 to rotate. At this time, after the fine soil enters the hollow threaded cylinder 4, it will be adsorbed to the bottom of the circular plate 5031. At this time, the rotation of the circular plate 5031 in cooperation with the L-shaped limit strip 502 will clean the fine soil on the bottom of the circular plate 5031.

[0051] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A vacuum preloading boundary sealing device for treating soft soil foundation, comprising a movable plate (1), support plates (2) are fixedly mounted on the left inner wall and the right inner wall of the movable plate (1), arc-shaped internal thread blocks (3) are fixedly mounted on the ends of the two support plates (2) close to each other, and a hollow threaded cylinder (4) is mounted on the internal thread of the arc-shaped internal thread block (3), characterized in that: It further includes: A cleaning mechanism (5), the cleaning mechanism (5) includes a strip-shaped limiting groove (501) opened on the inner wall of the hollow threaded cylinder (4), an L-shaped limiting strip (502) is slidably installed in the strip-shaped limiting groove (501), a suction cylinder (503) is slidably installed in the hollow threaded cylinder (4), the top end of the suction cylinder (503) extends outside the hollow threaded cylinder (4), a circular plate (5031) is rotatably installed at the bottom end of the suction cylinder (503), the L-shaped limiting strip (502) is in contact with the top and bottom ends of the circular plate (5031), a plurality of driving gear blocks one (505) are fixedly installed on the outer wall of the suction cylinder (503), and a plurality of driving gear blocks two (506) are fixedly installed on the inner wall of the hollow threaded cylinder (4).

2. The vacuum preloading boundary sealing device for soft soil foundation treatment according to claim 1, characterized in that: An air inlet pipe (507) is fixedly installed at the top end of the hollow threaded cylinder (4), a U-shaped mounting plate (508) is fixedly installed on the inner wall of the movable plate (1), a vacuum pump (509) is fixedly installed at the top of the U-shaped mounting plate (508), the output end of the vacuum pump (509) is fixedly connected to the air inlet pipe (507), an air outlet pipe (510) is fixedly installed on the back of the vacuum pump (509), and the end of the air outlet pipe (510) penetrates through the movable plate (1).

3. The vacuum preloading boundary sealing device for soft soil foundation treatment according to claim 1, characterized in that: A anti-blocking mechanism (6) is arranged below the hollow threaded cylinder (4), the anti-blocking mechanism (6) includes a drill bit (601) arranged below the hollow threaded cylinder (4), an isosceles trapezoidal block (602) is fixedly installed at the top of the drill bit (601), and the top of the isosceles trapezoidal block (602) is in contact with the circular plate (5031).

4. The vacuum preloading boundary sealing device for soft soil foundation treatment according to claim 1, characterized in that: A plurality of grooves (603) are opened on the outer wall of the hollow threaded cylinder (4), a plurality of circular holes (604) are respectively opened on the inner walls of the sides of the plurality of grooves (603) close to each other, and the plurality of circular holes (604) are all communicated with the inside of the hollow threaded cylinder (4).

5. The vacuum preloading boundary sealing device for soft soil foundation treatment according to claim 3, characterized in that: A plurality of T-shaped limiting sliding grooves (605) are opened on the outer wall of the hollow threaded cylinder (4), a limiting sliding block (606) is respectively slidably installed in the plurality of T-shaped limiting sliding grooves (605), the bottom ends of the plurality of limiting sliding blocks (606) are fixedly connected to the drill bit (601), the top ends of the plurality of limiting sliding blocks (606) are respectively fixedly installed with a limiting cross block (607), and the plurality of limiting cross blocks (607) are respectively clamped into the plurality of T-shaped limiting sliding grooves (605) and are respectively slidably connected with the plurality of T-shaped limiting sliding grooves (605).

6. The vacuum preloading boundary sealing device for soft soil foundation treatment according to claim 2, characterized in that: A transmission mechanism (7) is provided on the U-shaped mounting plate (508). The transmission mechanism (7) includes a driving motor (701) fixedly mounted on the inner wall of the bottom of the U-shaped mounting plate (508). A rotating shaft (702) is fixedly mounted on the output shaft of the driving motor (701). The top end of the rotating shaft (702) is rotatably connected to the U-shaped mounting plate (508). A plurality of first toothed plates (703) are fixedly mounted on the outer wall of the rotating shaft (702). A plurality of second toothed plates (704) are fixedly mounted on the outer wall of the hollow threaded cylinder (4). The plurality of second toothed plates (704) are engaged with the plurality of first toothed plates (703).

7. The vacuum preloading boundary sealing device for soft soil foundation treatment according to claim 1, characterized in that: A circular ring (705) is rotatably sleeved on the outer wall of the hollow threaded cylinder (4). A U-shaped plate (706) is fixedly mounted on the outer wall of the circular ring (705). A limiting horizontal plate (707) is fixedly mounted on the right side of the U-shaped plate (706). The limiting horizontal plate (707) penetrates through the arc-shaped internal threaded block (3) and is slidably connected to the arc-shaped internal threaded block (3). L-shaped movable plates (708) are fixedly mounted on the left side and the right side of the U-shaped plate (706) respectively.

8. The vacuum preloading boundary sealing device for soft soil foundation treatment according to claim 1, characterized in that: Adapting mechanisms (8) are respectively provided on the two support plates (2). The adapting mechanism (8) includes a rectangular rod (801) slidably mounted on the support plate (2). The rectangular rod (801) penetrates through the support plate (2) and is slidably connected to the support plate (2). A circular adapting plate (802) is fixedly mounted on the top end of the rectangular rod (801). An adapting spring (803) is sleeved on the rectangular rod (801). The top end of the adapting spring (803) is fixedly connected to the circular adapting plate (802). The bottom end of the adapting spring (803) is fixedly connected to the support plate (2).

Images