Sealing structure for stopping water at reserved hole of open caisson

Abstract

A sealing structure for stopping water at a reserved hole of an open caisson comprises the open caisson, the hole is formed in the inner wall of the open caisson, a sealing block is arranged in the hole, one end of the sealing block is in a circular truncated cone shape, the other end of the sealing block is cylindrical, the sealing block is plugged in the hole in a sealing mode, a positioning circular plate is arranged on the outer side of the sealing block, and a sealing ring is arranged on the outer side of the sealing block in a sleeving mode. A plurality of positioning blocks are evenly arranged on the circumferential side of the positioning circular plate and fixed to the outer wall of the open caisson through positioning screws. Compared with the prior art, the sealing block and the sealing ring play a primary sealing role, the piston ring piston is arranged in the piston pipe to play a secondary sealing role, double sealing can be achieved on the hole, and the sealing effect is guaranteed; the whole device is of a detachable structure, structural connection is simple, and construction and use are convenient; the open caisson plugging device solves the problems that an existing sealing method is complex in construction procedure and serious in material waste, and has the advantages of being high in open caisson plugging efficiency, low in cost and capable of being repeatedly used.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, in particular to a sealing structure for water stop at the reserved hole of a caisson. Background Technique

[0002] Pipe jacking construction is a method of trenchless pipeline laying, which has the characteristics of short construction period, no damage to the original buildings above the pipeline, and low cost. The working well of pipe jacking needs to be installed by means of a caisson. During installation, a reserved hole for accommodating the pipe jacking needs to be opened on the circumferential surface of the caisson shaft. When the shaft sinks, the reserved hole needs to be closed.

[0003] The existing closing method mainly uses bricklaying to block the reserved hole. When the pipe jacking needs to be inserted, the bricklaying layer is chiseled. The bricks used in this blocking method are disposable consumables, resulting in waste, and the blocking process is time-consuming. Therefore, how to make a sealing structure for water stop at the reserved hole of a caisson that can solve the problems of the existing technology has become a technical problem to be solved. Content of the Utility Model

[0004] Based on the above technical problems, the utility model provides a sealing structure for water stop at the reserved hole of a caisson to solve the problems in the above background technique.

[0005] In view of this, the utility model provides a sealing structure for water stop at the reserved hole of a caisson, which includes: a caisson, a hole is arranged on the inner wall of the caisson, a sealing block is arranged in the hole, one end of the sealing block is frustum-shaped and the other end is cylindrical, the sealing block is hermetically plugged in the hole, a positioning circular plate is arranged on the outer side of the sealing block, a sealing ring is sleeved on the outer side of the sealing block, a plurality of positioning blocks are evenly arranged on the circumferential side of the positioning circular plate, and the positioning blocks are fixed on the outer wall of the caisson by positioning screws.

[0006] Further, a piston tube is arranged on the inner wall of the hole, a circular plate is arranged at one end of the sealing block away from the positioning circular plate, a piston ring is fixedly sleeved on the outer side of the circular plate, and the circular plate piston is arranged in the piston tube.

[0007] Further, the sealing block includes a first stainless steel layer, and a first sealing layer, a first waterproof layer and a first anti-corrosion layer are sequentially arranged on the outer side of the first stainless steel layer.

[0008] Further, an installation groove is arranged on the inner wall of the hole, and the piston tube is arranged in the installation groove.

[0009] Further, a guiding hopper is arranged on one side of the circular plate away from the sealing block. The guiding hopper is arranged in the hole opening. One end of the guiding hopper is located inside the piston tube, and the inner diameter of the guiding hopper close to the piston tube is smaller than that of the other end.

[0010] Further, the circular plate includes a second stainless steel layer, and a second waterproof layer and a second anti-corrosion layer are sequentially arranged on the outer side of the second stainless steel layer.

[0011] Further, the piston ring includes a third stainless steel layer, and a second sealing layer and a third waterproof layer are sequentially arranged on the outer side of the third stainless steel layer.

[0012] The utility model provides a sealing structure for water stop at the reserved hole opening of a caisson. Compared with the prior art, the utility model plays a first-stage sealing role through the sealing block and the sealing ring, and the piston ring piston arranged inside the piston tube plays a second-stage sealing role, so as to achieve double sealing for the hole opening and ensure the sealing effect.

[0013] As a whole, the utility model is a detachable structure with simple structural connection, which is convenient for construction use. Using the utility model can avoid the complex construction procedures and serious waste of consumables in the existing closing method, and has the advantages of high efficiency, low cost and reusable for plugging the caisson. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The front view of the overall structure of the utility model is shown;

[0015] Figure 2 The sectional view of the overall structure of the utility model is shown;

[0016] Figure 3 The sectional view of the sealing block structure of the utility model is shown;

[0017] Figure 4 The sectional view of the connection structure between the circular plate and the piston ring of the utility model is shown;

[0018] Figure 5 The sectional view of the piston ring 3 structure of the utility model is shown;

[0019] In the figure: 1, piston tube; 2, circular plate; 3, piston ring; 4, hole opening; 5, caisson; 6, positioning circular plate; 7, positioning block; 8, positioning screw; 9, sealing ring; 10, sealing block; 11, guiding hopper; 12, installation groove; 14, second anti-corrosion layer; 15, second waterproof layer; 16, second stainless steel layer; 17, third waterproof layer; 18, second sealing layer; 19, third stainless steel layer; 20, first anti-corrosion layer; 21, first waterproof layer; 22, first sealing layer; 23, first stainless steel layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the content disclosed below.

[0022] The following is in conjunction with Figures 1 to 5 to further illustrate the technical solution of the present utility model.

[0023] The first embodiment is as Figures 1 to 5 shown: A sealing structure for water stop at the reserved hole of a caisson, which includes: a caisson 5, an opening 4 is provided on the inner wall of the caisson 5, a sealing block 10 is provided in the opening 4, one end of the sealing block 10 is frustum-shaped and the other end is cylindrical, the thickness of one end of the sealing block 10 gradually thickens from left to right, the sealing block 10 is hermetically plugged in the opening 4, a positioning circular plate 6 is provided on the outer side of the sealing block 10, a sealing ring 9 is sleeved on the outer side of the sealing block 10, a plurality of positioning blocks 7 are evenly provided on the circumferential side of the positioning circular plate 6, and the positioning blocks 7 are fixed on the outer wall of the caisson 5 by positioning screws 8.

[0024] A piston tube 1 is provided on the inner wall of the opening 4, a circular plate 2 is provided at one end of the sealing block 10 away from the positioning circular plate 6, a piston ring 3 is fixedly sleeved on the outer side of the circular plate 2, and the circular plate 2 is piston-mounted in the piston tube 1. The sealing block 10 includes a first stainless steel layer 23, and a first sealing layer 22, a first waterproof layer 21, and a first anti-corrosion layer 20 are sequentially provided on the outer side of the first stainless steel layer 23.

[0025] An installation groove 12 is provided on the inner wall of the opening 4, and the piston tube 1 is provided in the installation groove 12. A guiding hopper 11 is provided on the side of the circular plate 2 away from the sealing block 10, the guiding hopper 11 is provided in the opening 4, one end of the guiding hopper 11 is located in the piston tube 1, and the inner diameter of the guiding hopper 11 near the piston tube 1 is smaller than the inner diameter of its other end.

[0026] The circular plate 2 includes a second stainless steel layer 16, and a second waterproof layer 15 and a second anti-corrosion layer 14 are sequentially provided on the outer side of the second stainless steel layer 16. The piston ring 3 includes a third stainless steel layer 19, and a second sealing layer 18 and a third waterproof layer 17 are sequentially provided on the outer side of the third stainless steel layer 19.

[0027] During use: One end of the sealing block 10 is frustum-shaped, and the other end is cylindrical. The thickness of one end of the sealing block 10 gradually thickens from left to right. The sealing block 10 is inserted into the hole 4, and the sealing block 10 seals the hole 4. The positioning block 7 is fixed to the outer wall of the caisson 5 by positioning screws 8. A sealing ring 9 is sleeved outside the sealing block 10, thereby sealing and fixing the positioning circular plate 6. At the same time, the piston ring 3 piston is arranged in the piston tube 1, which can play an auxiliary sealing role for the hole 4;

[0028] By providing the first waterproof layer 21 and the first anti-corrosion layer 20, the waterproof and anti-corrosion performance of the sealing block 10 is improved. By providing the second waterproof layer 15 and the second anti-corrosion layer 14, the waterproof and anti-corrosion performance of the circular plate 2 is improved. By providing the second sealing layer 18 and the third waterproof layer 17, the waterproof sealing performance of the piston ring 3 is improved.

[0029] The utility model plays a primary sealing role through the sealing block 10 and the sealing ring 9, and the piston ring 3 piston arranged in the piston tube 1 plays a secondary sealing role, which can double-seal the hole 4 and ensure the sealing effect; The whole of the utility model is a detachable structure, with simple structural connection and convenient construction use; Using the utility model avoids the complex construction procedures and serious waste of consumables in the existing closing methods, and has the advantages of high efficiency, low cost and reusable for plugging the caisson.

[0030] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sealing structure for stopping water at a reserved opening of a caisson, comprising a caisson, characterized in that: The inner wall of the caisson is provided with a hole, and a sealing block is provided in the hole. One end of the sealing block is truncated cone-shaped and the other end is cylindrical. The sealing plug of the sealing block is provided in the hole. A positioning circular plate is provided on the outer side of the sealing block. A sealing ring is sleeved on the outer side of the sealing block. Several positioning blocks are evenly arranged on the circumference of the positioning circular plate. The positioning block is fixed to the outer wall of the caisson by positioning screws.

2. The sealing structure for stopping water at the reserved opening of the caisson according to claim 1 is characterized in that: The inner wall of the hole is provided with a piston tube, the end of the sealing block away from the positioning circular plate is provided with a circular plate, the outer fixed sleeve of the circular plate is provided with a piston ring, and the circular plate piston is arranged in the piston tube.

3. The sealing structure for stopping water at the reserved opening of the caisson according to claim 2 is characterized in that: The sealing block comprises a first stainless steel layer, and a first sealing layer, a first waterproof layer and a first anti-corrosion layer are sequentially arranged on the outer side of the first stainless steel layer.

4. The sealing structure for stopping water at the reserved opening of the caisson according to claim 3 is characterized in that: The inner wall of the hole is provided with a mounting groove, and the piston tube is arranged in the mounting groove.

5. The sealing structure for stopping water at the reserved opening of the caisson according to claim 4 is characterized in that: A guide bucket is arranged on one side of the circular plate away from the sealing block. The guide bucket is arranged in the hole. One end of the guide bucket is located in the piston tube. The inner diameter of the guide bucket close to the piston tube is smaller than the inner diameter of the other end.

6. The sealing structure for stopping water at the reserved opening of the caisson according to claim 5 is characterized in that: The circular plate comprises a second stainless steel layer, and a second waterproof layer and a second anti-corrosion layer are sequentially arranged on the outer side of the second stainless steel layer.

7. The sealing structure for stopping water at the reserved opening of the caisson according to claim 6 is characterized in that: The piston ring comprises a third stainless steel layer, and a second sealing layer and a third waterproof layer are sequentially arranged on the outer side of the third stainless steel layer.

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