A mud circulation system for pipe jacking construction

Abstract

The present invention discloses a mud circulation system for pipe jacking construction, which relates to the field of mud treatment and includes a body for filtering mud and a filter plate slidably arranged on the body. The body is also provided with a plate pulling mechanism for opening the plate, and the plate pulling mechanism includes a plate pulling slider, on which a top plate is slidably arranged; and further includes a passive jacking assembly for driving the top plate to move vertically. The present invention provides a mud circulation system for pipe jacking construction. During the process of the plate pulling slider opening the plate, the filter plate will be located above the top plate. During the process of the plate pulling slider moving horizontally, the filter plate is driven to shake vertically by the top plate to shake off waste materials, and this method directly acts on the overall structure of the filter plate, thereby minimizing damage to the filter cloth. Moreover, since a filtering diversion structure is provided in the mud circulation system, waste residue is filtered to achieve the recycling of mud, reduce environmental pollution, and improve resource utilization.

Description

Technical Field

[0001] The present invention relates to the field of mud treatment, and in particular to a mud circulation system for pipe jacking construction. Background Art

[0002] Pipe jacking is a well-known construction method for underground pipelines and tunnels, typically involving trenchless pipe installation. This construction technique is widely used in municipal engineering, sewage treatment, water supply, natural gas, telecommunications, and other fields. During the construction process, mud is generated. Because this mud does not meet environmental standards, it cannot be directly discharged and must first be filtered to purify the water quality.

[0003] For example, the Chinese patent document, entitled "Electromagnetic Shaking Mechanism for Filter Cloth of Filter Press," with authorization publication number CN112516634B and publication date July 5, 2022, describes a mechanism comprising a crossbar positioned between two adjacent filter plates, a curved rod magnet mounted on the inner side of the curved rod, and filter cloth magnets with opposite polarity fixed to the adjacent opposing surfaces of the filter cloth. The magnets on the opposing surfaces of the adjacent filter cloth magnets are aligned. As the filter plates gradually separate under the pull of an external mechanism, the filter cloth gradually stretches under the pull of a pull rope at the bottom corner. The electromagnet and filter cloth magnet suddenly separate, but the opposing magnetic poles of the filter cloth magnets are aligned. After the collision, they immediately separate again. The attraction and repulsion of the electromagnet cause the entire filter cloth to shake. The weight of the underlying filter cloth and the pull rope force the filter cloth to move in the opposite direction, causing the filter cloth to shake back and forth, thereby releasing the filter cakes. This allows all filter cakes to be quickly and simultaneously unloaded, significantly improving work efficiency and saving costs.

[0004] The disadvantage of the above-mentioned prior art is that after the mud is filtered, the generated mud waste will remain on the filter cloth. In order to facilitate discharge, the prior art adopts a method of controlling the shaking of the filter cloth to shake off the waste, but this method directly acts on the filter cloth, which can easily cause damage to the filter cloth. Summary of the Invention

[0005] The purpose of the present invention is to provide a slurry circulation system for pipe jacking construction to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A slurry circulation system for pipe jacking construction comprises a body for filtering slurry and a filter plate slidably mounted on the body. The body is further provided with a plate pulling mechanism for opening the plate, the plate pulling mechanism comprising a plate pulling slider, on which a top plate is slidably mounted.

[0008] It also includes a passive jacking component for driving the top plate to move vertically. During the process of the plate pulling slider opening the plate, the passive jacking component drives the filter plate to vibrate vertically through the top plate.

[0009] In the above-mentioned mud circulation system for pipe jacking construction, a first clamping claw and a second clamping claw are rotatably provided on the pull plate slider, and a torsion spring is respectively provided between the first clamping claw and the second clamping claw and the pull plate slider.

[0010] In the above-mentioned mud circulation system for pipe jacking construction, the passive jacking assembly includes a sliding seat arranged on the pull plate slider, the top plate is slidably connected to the sliding seat, a cam is provided on the sliding seat, and the top plate is located on the movement stroke of the cam.

[0011] In the above-mentioned mud circulation system for pipe jacking construction, a tooth plate is provided on the machine body, and a gear is provided on the cam, and the gear is engaged with the tooth plate.

[0012] The above-mentioned mud circulation system for jacking pipe construction has an abutment block elastically provided on the top plate, and a first abutment portion and a second abutment portion are provided on the abutment block. The first abutment portion is located on the movement stroke of the filter plate. After the first abutment portion completes the abutment with the filter plate, the second abutment portion is located on the movement stroke of the cam.

[0013] In the above-mentioned mud circulation system for pipe jacking construction, a locking portion is provided on the machine body, the locking portion is located on the movement stroke of the first clamping claw, and the first abutting portion is located on the movement stroke of the first clamping claw.

[0014] The above-mentioned mud circulation system for pipe jacking construction is further provided with an unlocking part on the machine body, and a third abutting part is also provided on the abutting block. The unlocking part is located on the movement stroke of the third abutting part. A first avoidance groove is provided on the abutting block, and a baffle is rotatably provided inside the first avoidance groove. A second avoidance groove is provided on the filter plate.

[0015] In the above-mentioned mud circulation system for pipe jacking construction, the cam includes a first section and a second section that are slidably connected to each other, and an elastic member is provided between the first section and the second section.

[0016] In the above-mentioned mud circulation system for pipe jacking construction, there are two pull-plate sliders, and the two pull-plate sliders are symmetrically arranged about the filter plate.

[0017] In the above-mentioned slurry circulation system for pipe jacking construction, a pushing component for assisting waste materials to fall is provided on the filter plate.

[0018] In the above technical solution, the present invention provides a slurry circulation system for pipe jacking construction, in which a top plate is slidably provided on a pull plate slider. When the pull plate slider opens the plate, the filter plate is located above the top plate, and the pull plate slider is driven to move horizontally by a power source. During the horizontal movement of the pull plate slider, the passive jacking assembly drives the filter plate to shake vertically through the top plate to shake off the waste material, and this method directly acts on the overall structure of the filter plate, thereby minimizing damage to the filter cloth.

[0019] Moreover, since a filtering and diversion structure is provided in the mud circulation system, waste residue is filtered to realize the recycling of mud, reduce environmental pollution and improve resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A schematic diagram of the installation structure of the filter plate and the body provided in an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the structure of the overlap portion and the pull plate slider provided in another embodiment of the present invention;

[0023] Figure 3 A schematic structural diagram of another embodiment of the present invention when the abutment block limits the first claw;

[0024] Figure 4 An exploded schematic diagram of a sliding seat and a top plate provided in another embodiment of the present invention;

[0025] Figure 5 A schematic diagram of the structure of the overlap portion and the pull plate slider provided in yet another embodiment of the present invention;

[0026] Figure 6 A partial cross-sectional structural diagram of yet another embodiment of the present invention;

[0027] Figure 7 for Figure 6 A magnified schematic diagram of the local structure at point A.

[0028] Description of reference numerals:

[0029] 1. Machine body; 2. Filter plate; 201. Frame; 202. Overlapping part; 3. Pull plate slider; 4. Top plate; 5. First clamping claw; 6. Second clamping claw; 7. Rotating seat; 8. Sliding seat; 9. Cam; 901. First section; 902. Second section; 10. Slide groove; 11. Tooth plate; 12. Gear; 13. Abutment block; 14. First abutment part; 15. Second abutment part; 16. Horizontal groove; 17. Sliding part; 18. First spring; 19. Second spring; 21. Locking part; 22. Unlocking part; 23. Third abutment part; 24. First avoidance groove; 25. Baffle; 26. Second avoidance groove; 27. Abutment plate; 28. Push plate; 29. ​​Third spring; 30. Transmission plate; 31. Transmission rod; 32. Mounting groove. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] In the description of the present invention, it is to be understood that Figure 6 The position of the middle sliding seat 8 relative to the pull plate slider 3 is up, and vice versa. The terms "center", "longitudinal", "lateral", "length", "width", "degree", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0032] Reference Figure 1-7 A mud circulation system for pipe jacking construction provided by an embodiment of the present invention includes a body 1 for filtering mud and a filter plate 2 slidably arranged on the body 1. The body 1 is also provided with a plate pulling mechanism for opening the plate, and the plate pulling mechanism includes a plate pulling slider 3, on which a top plate 4 is slidably arranged; it also includes a passive jacking component for driving the top plate 4 to move vertically. During the process of the plate pulling slider 3 opening the plate, the passive jacking component drives the filter plate 2 to vibrate vertically through the top plate 4.

[0033] Specifically, during the pipe jacking construction process, mud needs to be injected, which has the functions of carrying waste residue and soil pressure. The pipe jacking construction mud circulation system needs to first pass the used mud through a cyclone separator to remove large particle impurities, and then pass the mud through a filter press for fine filtration. The solid waste generated after filtration is crushed and transported. The body 1 is a frame-type structure, and the filter plate 2 includes a frame 201 and a lap joint 202 symmetrically arranged on the frame 201. The filter plate 2 is slidably arranged along the length of the body 1. When the mud is pressed, multiple filter plates 2 are pressed by a hydraulic mechanism, and then mud is injected into the gaps between adjacent filter cloths. The fine mud after filtration is discharged and reused, and solid and larger waste will remain in the gaps. When the filtration is completed, the multiple filter plates 2 are driven to move one by one by the pulling plate mechanism to open the gaps between the filter cloths in turn, and then the waste adhering to the filter cloths is removed manually with assistance, thus completing the entire filtration process. This is a prior art and will not be described in detail. The utility model discloses the filter cloth 2 of the present invention, and the filter cloth 2 of the present invention is provided with a filter cloth 3. The filter cloth 2 of the present invention is provided with a filter cloth 3. The filter cloth 2 of the present invention is provided with a filter cloth 3. The filter cloth 2 of the present invention is provided with a filter cloth 3. The filter cloth 2 of the present invention is provided with a filter cloth 3. The filter cloth 2 of the present invention is provided with a filter cloth 3. The filter cloth 2 of the present invention is provided with a filter cloth 3. The filter cloth 2 of the present invention is provided with a filter cloth 3. The filter cloth 2 of the present invention is provided with a filter cloth 3. The filter cloth 2 of the present invention is provided with a filter cloth 3.

[0034] Furthermore, a first claw 5 and a second claw 6 are rotatably provided on the pull plate slider 3, and a torsion spring (not shown) is respectively provided between the first claw 5 and the second claw 6 and the pull plate slider 3. Specifically, a plurality of rotating seats 7 are provided on the pull plate slider 3, and the first claw 5 and the second claw 6 are rotatably connected to the plurality of rotating seats 7 respectively, and a torsion spring is provided between the claw and the rotating seat 7. The torsion spring elastic force on the first claw 5 causes the first claw 5 to be arranged at an angle, and the second claw 6 is preferably arc-shaped, and the first claw 5 and the second claw 6 are symmetrically arranged, and the surfaces of the first claw 5 and the second claw 6 that are close to each other are both vertical surfaces, and a protrusion is provided on the rotating seat 7 to prevent the first claw 5 and the second claw 6 from rotating excessively upward. The purpose of such a setting is that when the plate is opened, the inclined surface of the first claw 5 abuts against the bottom edge of the overlap portion 202, so that the first claw 5 rotates downward to avoid it, and the torsion spring corresponding to the first claw 5 is charged. When the first claw After the second claw 6 is away from the filter plate 2, the elastic force of the torsion spring is released to drive the second claw 6 to reset. This reciprocating process can realize the opening process of multiple filter plates 2 one by one. This is the existing technology and will not be described in detail.

[0035] Preferably, the passive lifting assembly includes a sliding seat 8 disposed on the pull plate slider 3, the top plate 4 being slidably connected to the sliding seat 8, a cam 9 being disposed on the sliding seat 8, and the top plate 4 being located within the travel of the cam 9. Specifically, the sliding seat 8 is disposed on the upper surface of the pull plate slider 3, and has a slide groove 10 formed therein. The vertical section of the top plate 4 is slidably connected to the slide groove 10. The cam 9 is disposed on the side of the sliding seat 8, and the lower surface of the top plate 4 is disposed within the travel of the end of the cam 9. This arrangement serves the purpose of, when the top plate 4 is located below the overlap portion 202, rotating the cam 9 by means of an existing structure such as a motor providing a rotational force, thereby causing the end of the cam 9 to abut against the lower surface of the top plate 4, thereby pushing the top plate 4 and the filter plate 2 upward. After the cam 9 is separated from the top plate 4, the top plate 4 moves downward under the action of its own gravity. This reciprocating process can drive the filter plate 2 to vibrate vertically via the top plate 4, thereby assisting in the dropping of waste materials.

[0036] It should be noted that, in this embodiment, a first spring 18 is provided between the top plate 4 and the sliding seat 8. When the top plate 4 moves upward, force is stored in the first spring 18. When the top plate 4 moves downward, the elastic force of the first spring 18 is released, thereby assisting the top plate 4 in resetting.

[0037] As an alternative to the aforementioned motor-driven rotation of the cam 9, a toothed plate 11 is provided on the machine body 1, and a gear 12 is provided on the cam 9, which meshes with the toothed plate 11. Specifically, the toothed plate 11 is arranged along the length of the machine body 1 and is located outside the guide rail. The gear 12 is coaxially arranged with the rotation axis of the cam 9. The effect of this arrangement is that, due to the meshing of the gear 12 and the toothed plate 11, when the plate pull slider 3 slides horizontally along the guide rail with the filter plate 2, it drives the gear 12 to rotate, thereby driving the cam 9 to rotate, providing the power required for the cam 9 to rotate. In this way, the cam 9 is passively rotated during the movement of the plate pull slider 3, thereby achieving passive vibration of the filter plate 2.

[0038] Preferably, there are two pull plate sliders 3, and the two pull plate sliders 3 are symmetrically arranged about the filter plate 2. Similarly, there are two passive jacking components. During operation, the two overlapping parts 202 are respectively located above the two top plates 4 to improve stability during shaking.

[0039] In the lifting method of the above embodiment, regardless of whether there is a filter plate 2 on the top plate 4, the cam 9 will abut against the top plate 4 to drive the top plate 4 to rise and fall vertically, which undoubtedly increases the resistance during the movement of the trolley. To solve the above problem, as another embodiment of the present invention, an abutment block 13 is elastically provided on the top plate 4, and a first abutment portion 14 and a second abutment portion 15 are provided on the abutment block 13. The first abutment portion 14 is located on the movement stroke of the filter plate 2. After the first abutment portion 14 completes the abutment with the filter plate 2, the second abutment portion 15 is located on the movement stroke of the cam 9. Specifically, a horizontal groove 16 is provided on the upper surface of the top plate 4 along the width direction of the pull plate slider 3, and a sliding portion 17 is provided at the bottom of the abutment block 13. The sliding portion 17 is slidably connected to the horizontal groove 16, and a limiting structure is provided between the two to prevent mutual separation. The first abutment portion 14 is an arcuate surface structure on the abutment block 13, and the second abutment portion 15 is a local area below the abutment block 13. The elastic setting is that a second spring 19 is provided between the sliding portion 17 and the horizontal groove 16. The elastic force of the second spring 19 makes the first abutment portion 14 abut against the filter plate 2 during movement, and the second abutment portion 15 will not be located above the top plate 4. The effect of such a setting is that when the pull plate slider 3 moves toward During the movement of the filter plate 2, the second abutting portion 15 is located away from the cam 9. After the overlapping portion 202 abuts against the first claw 5, it will abut against the first abutting portion 14, thereby driving the abutting block 13 to move horizontally along the direction of the horizontal groove 16 and storing force on the second spring 19. The benefits of this are, first, the elastic force of the second spring 19 provides a reaction force to the filter plate 2 at this time, so as to flexibly clamp the filter plate 2 to improve its stability during movement. Second, the second abutting portion 15 moves to the top of the cam 9. At this time, the rotation of the cam 9 can drive the top plate 4 and the filter plate 2 above it to vibrate synchronously, so as to minimize the resistance of the pull plate slider 3 during the no-load process.

[0040] It should be noted that the pull plate slider 3 in the prior art is provided with limiting structures such as a push rod and a cross bar. When the pull plate slider 3 needs to be reset after the plate is opened, the push rod is inserted under the first clamping claw 5 to limit the first clamping claw 5 to a position where it does not abut against the overlapping part 202. Therefore, when the pull plate slider 3 returns, the first clamping claw 5 will not interfere with the overlapping part 202. When the reset is completed, the push rod is pulled out, and the elastic force of the torsion spring is released to drive the first clamping claw 5 to reset in preparation for the next opening of the plate, such as the Chinese patent document with authorization announcement number CN202237435U and announcement date 2012-05-30, and the working principle of the first clamping claw 5 and the second clamping claw 6 can also refer to the Chinese patent document.

[0041] As an alternative to the above-mentioned limiting first claw 5, a locking portion 21 is provided on the body 1, and the locking portion 21 is located on the movement stroke of the first claw 5, and the first abutting portion 14 is located on the movement stroke of the first claw 5. Specifically, the locking portion 21 is a plate-like structure fixed to the end of the body 1, which is located on the rotation stroke of the first claw 5, and the vertical height of the locking portion 21 is lower than the lower surface of the overlapping portion 202. The elastic force of the first spring 18 is greater than the elastic force of the torsion spring on the first claw 5 to prevent the first claw 5 from tilting the top plate 4. The effect of such a setting is that after the plate is opened, the plate pulling slider 3 continues to move, which will cause the first claw 5 to abut against the locking portion 21. Since the vertical height of the locking portion 21 is lower than the lower surface of the overlapping portion 202, the position where the locking portion 21 abuts against the first claw 5 will be lower, so that the first claw 5 can rotate downward at a larger angle, thereby causing the end of the first claw 5 to abut against the first The abutment portion 14 abuts, thereby driving the abutment block 13 to slide along the horizontal groove 16 and accumulating force on the second spring 19 to achieve avoidance. When the first claw 5 has completed the abutment with the first abutment portion 14, the first claw 5 will be located below the abutment block 13, and at this time the elastic force of the second spring 19 is released, so that the abutment block 13 moves to the top of the first claw 5. At this time, when the first claw 5 is away from the locking portion 21, the elastic force of the torsion spring is released, which will cause the end of the first claw 5 to abut against the lower surface of the abutment block 13, thereby limiting the reverse rotation of the first claw 5 to achieve a limiting effect. That is, this process enables the abutment block 13 to have a limiting effect on the first claw 5, so as to facilitate the resetting of the pull plate slider 3.

[0042] Furthermore, an unlocking portion 22 is provided on the body 1, and a third abutting portion 23 is provided on the abutting block 13. The unlocking portion 22 is located on the movement stroke of the third abutting portion 23. A first avoidance groove 24 is provided on the abutting block 13, and a baffle 25 is rotatably provided inside the first avoidance groove 24. A second avoidance groove 26 is provided on the filter plate 2. Specifically, the third abutting portion 23 is a wedge-shaped surface arranged on the side of the abutting block 13, the unlocking portion 22 is a rod-shaped structure arranged at one end of the body 1 away from the locking portion 21, the first avoidance groove 24 is provided on the upper surface of the abutting block 13 to divide the abutting block 13 into two parts, and the two parts are connected by the sliding portion 17 at the bottom thereof, the second avoidance groove 26 is provided on the lower surface of the overlapping portion 202, the width of the first avoidance groove 24 is adapted to the size of the side wall of the second avoidance groove 26 to the edge position of the overlapping portion 202, and the width of the second avoidance groove 26 is adapted to the size of the side wall of the first avoidance groove 24 to the end of the abutting block 13, that is, when the pull plate slider 3 returns, the abutting block 13 The first circumference of the first retaining plate 20 is 240mm, and the second circumference of the first retaining plate 20 is 240mm. When the slider 3 opens the plate, since the baffle 25 is limited in one direction, when the overlapping portion 202 abuts against the baffle 25, it will slide along the surface of the baffle 25 and the first abutting portion 14, so as to drive the abutting block 13 to move horizontally, so as to push the second abutting portion 15 to above the cam 9. During the return of the plate pulling slider 3, the plate pulling slider 3 will move in the opposite direction. When the plate pulling slider 3 passes the position of the filter plate 2 that has been opened, a part of the abutting block 13 is inserted into the second avoidance groove 26, and a part of the overlapping portion 202 is inserted into the first avoidance groove 24, so that the baffle 25 rotates and stores force on the torsion spring on the baffle 25 to achieve avoidance. When the abutting block 1 3 is away from the filter plate 2, the elastic force of the torsion spring is released to drive the baffle 25 to rotate in the opposite direction and reset, so that the plate pulling slider 3 can smoothly pass through all the filter plates 2 that have been opened. Then the plate pulling slider 3 continues to move, which will cause the third abutting portion 23 to abut against the unlocking portion 22 to drive the abutting block 13 to slide along the horizontal groove 16 and store force on the second spring 19. When the lower surface of the abutting block 13 is away from the first clamping claw 5, the elastic force of the torsion spring on the first clamping claw 5 is released to drive the first clamping claw 5 to passively reset. At this time, the plate pulling slider 3 is controlled to move away from the unlocking portion 22. At this time, the elastic force of the second spring 19 is released to drive the abutting block 13 to reset in preparation for the next opening.

[0043] When the abutment block 13 slides toward the cam 9, if the end of the cam 9 is exactly in the movement stroke of the abutment block 13, the abutment block 13 will interfere with the cam 9. In order to solve the above problem, preferably, the cam 9 includes a first section 901 and a second section 902 that are slidably connected to each other, and an elastic member (not shown) is provided between the first section 901 and the second section 902. The first section 901 is rotatably arranged on the sliding seat 8, and the second section 902 is slidably arranged along the thickness direction of the first section 901. The elastic member is preferably a metal spring. The purpose of such arrangement is that when the abutment block 13 slides in the direction of the cam 9, if the end of the cam 9 is just in the movement stroke of the abutment block 13, the abutment block 13 will abut against the side wall of the second section 902, so that the second section 902 slides along the width direction of the first section 901 and accumulates force on the elastic member to achieve avoidance. When the second section 902 is away from the abutment block 13, the elastic force of the elastic member is released to drive the second section 902 to reset. In the next cycle of rotation of the cam 9, the end of the second section 902 will abut against the second abutment portion 15, so that the filter plate 2 can still be driven to passively shake through the top plate 4.

[0044] As another embodiment of the present invention, the filter plate 2 is provided with a pushing assembly for assisting the waste material from falling. The pushing assembly includes an abutment plate 27 provided on the abutment block 13, a push plate 28 slidably provided on the filter plate 2, a third spring 29 provided between the push plate 28 and the filter plate 2, a transmission plate 30 slidably provided on the filter plate 2, and a transmission rod 31 provided on the filter plate 2, the ends of the transmission rod 31 respectively abutting against the transmission plate 30 and the push plate 28. Specifically, the abutment plate 27 is arranged on the upper surface of the abutment block 13, and the abutment plate 27 protrudes from the horizontal side of the abutment block 13, that is, the length of the abutment plate 27 is greater than the width of the abutment block 13, and a mounting groove 32 is provided inside the overlap portion 202. The push plate 28 is slidingly and sealingly connected to the side wall of the mounting groove 32 and the side wall of the frame 201. The push plate 28 is preferably U-shaped, and both ends of the push plate 28 extend through the filter press cavity between the adjacent filter plates 2. The third spring 29 is arranged between the U-shaped inner wall of the push plate 28 and the side wall of the mounting groove 32. The transmission rod 31 is rotatably arranged in the mounting groove 32 through the rotating shaft. Under the elastic force of the third spring 29 Under the action, the transmission rod 31 is in a vertical state, the transmission plate 30 is Z-shaped, and its horizontal edge is slidably connected to the mounting groove 32, and a blocking block and other structures are provided on the side wall of the mounting groove 32 to limit the movement of the transmission plate 30. The vertical edge above it abuts the transmission rod 31, and the vertical edge below is located on the movement range of the abutment plate 27, and a protrusion is provided on the inner wall of the mounting groove 32 to prevent the push plate 28 from sliding excessively. The effect of such a setting is that in the process of opening the plate slider 3, the abutment plate 27 will be driven to move toward the direction of the filter plate 2. Since the abutment plate 27 protrudes from the abutment block 1 3, that is, in the process of moving the pull plate slider 3, the abutment plate 27 will be brought to the inner side of the vertical edge below the transmission plate 30 (that is, the side close to the frame). In the subsequent process of the filter plate 2 abutting against the first abutment portion 14 to drive the abutment block 13 to move horizontally, the abutment plate 27 will be driven to move horizontally synchronously. At this time, under the action of the abutment plate 27 abutting against the vertical edge below the transmission plate 30, the transmission plate 30 will be driven to move horizontally synchronously, so that the vertical edge above the transmission plate 30 will abut against the lower end of the transmission rod 31, so that the transmission rod 31 rotates around the rotating shaft, thereby driving the push plate 28 toward The filter chamber slides in the direction of the filter chamber and accumulates force on the third spring 29, so that the push plate 28 is inserted between the waste and the filter cloth (because the waste residue has gravity, under the pull of gravity, a gap will be generated between the edge of the waste and the filter cloth), so that the waste can be shoveled off, thereby further assisting the waste to fall. When the plate is opened, the pull plate slider 3 moves in the reverse direction to drive the abutment plate 27 and the transmission plate 30 away. At this time, the elastic force of the third spring 29 is released, so that the push plate 28 abuts against the transmission rod 31, so as to drive the transmission rod 31 to rotate in the reverse direction, thereby pushing the transmission plate 30 to move in the reverse direction to achieve reset.

[0045] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A slurry circulation system for pipe jacking construction, comprising a body for filtering slurry and a filter plate slidably arranged on the body, wherein the body is further provided with a plate pulling mechanism for opening the plate, characterized in that: The plate pulling mechanism includes a plate pulling slider, on which a top plate is slidably provided; and further includes a passive lifting assembly for driving the top plate to move vertically. When the plate pulling slider opens the plate, the passive lifting assembly drives the filter plate to vibrate vertically through the top plate. The pull plate slider is rotatably provided with a first clamping claw and a second clamping claw, and a torsion spring is respectively provided between the first clamping claw and the second clamping claw and the pull plate slider; The passive lifting assembly includes a sliding seat provided on the pull plate slider, the top plate is slidably connected to the sliding seat, a cam is provided on the sliding seat, and the top plate is located on the movement stroke of the cam; An abutment block is elastically provided on the top plate, and a first abutment portion and a second abutment portion are provided on the abutment block. The first abutment portion is located on the movement stroke of the filter plate. After the first abutment portion completes abutment with the filter plate, the second abutment portion is located on the movement stroke of the cam.

2. A slurry circulation system for pipe jacking construction according to claim 1, characterized in that: A tooth plate is provided on the machine body, a gear is provided on the cam, and the gear is meshed with the tooth plate.

3. A slurry circulation system for pipe jacking construction according to claim 1, characterized in that: The machine body is provided with a locking portion, the locking portion is located on the movement stroke of the first clamping claw, and the first abutting portion is located on the movement stroke of the first clamping claw.

4. A slurry circulation system for pipe jacking construction according to claim 3, characterized in that: The machine body is also provided with an unlocking portion, and the abutment block is also provided with a third abutment portion. The unlocking portion is located on the movement stroke of the third abutment portion. The abutment block is provided with a first avoidance groove, and a baffle is rotatably provided inside the first avoidance groove. The filter plate is provided with a second avoidance groove.

5. A slurry circulation system for pipe jacking construction according to claim 2, characterized in that: The cam includes a first section and a second section that are slidably connected to each other, and an elastic member is provided between the first section and the second section.

6. A slurry circulation system for pipe jacking construction according to claim 1, characterized in that: There are two pulling plate sliders, and the two pulling plate sliders are symmetrically arranged with respect to the filter plate.

7. A slurry circulation system for pipe jacking construction according to claim 1, characterized in that: The filter plate is provided with a pushing component for assisting the waste to fall.

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