Subway shield grouting system pipeline emergency switching device

Abstract

The utility model relates to the technical field of grouting system pipeline emergency switching, in particular to a subway shield grouting system pipeline emergency switching device which has the advantage of improving practicability and comprises a grouting communicating vessel, a discharging pipeline is arranged on the left portion of the grouting communicating vessel, and a plurality of through holes are formed in the right portion of the grouting communicating vessel. The right portion of the grouting communicating vessel is rotationally connected with a connecting rod through a bearing, a motor is installed on the right portion of the connecting rod, a sealing device is arranged on the left portion of the connecting rod, and extrusion force generated by grout to the sealing device is transmitted to the grouting communicating vessel. And the damage to the connecting part of the sealing device and the connecting rod is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency switching of pipelines of a grouting system, in particular to an emergency switching device for pipelines of a subway shield grouting system. Background Art

[0002] As we all know, the subway shield machine is a special engineering machinery for tunnel excavation. Modern shield tunneling machines integrate optical, mechanical, electrical, hydraulic, sensor and information technologies. They have the functions of excavating and cutting soil, transporting soil and slag, assembling tunnel linings, measuring and guiding and correcting deviations. During operation, a grouting pump is needed to inject slurry into the shield machine.

[0003] China Utility Model Publication Specification CN218544032U discloses a novel subway shield grouting system pipeline emergency switching device, including a grouting communicating vessel, the right side of the grouting communicating vessel is welded with a discharge pipeline, and the upper and lower parts of the left side of the grouting communicating vessel are respectively welded with a feed pipeline, and it is characterized in that a valve core switcher assembly is installed on the inner side of the grouting communicating vessel, and the upper and lower parts of the inner side of the grouting communicating vessel are respectively welded with limiting baffles, and the valve core switcher assembly includes a material-blocking valve core, and the lower right part of the material-blocking valve core is welded with a central shaft rod, and the front end of the material-blocking valve core is fixed with a driven large gear, and a driving small gear is arranged on the right side of the driven large gear, and a handle rocker is bolted to the upper front end of the driving small gear.

[0004] Although this device has the effect of switching the grouting pipe group, the slurry entering the grouting connecting vessel will, under strong pressure, press tightly against the side wall of the material-blocking valve core. The strong extrusion pressure generated will be transmitted to the welded central axis through the material-blocking valve core. When one end of the material-blocking valve core presses against the limit baffle for a long time to block the slurry, the strong extrusion pressure will produce a tearing force on the welding part of the material-blocking valve core and the central axis, which is prone to damage or even breakage of the welding part. Therefore, its practicality is not very good and there is room for improvement. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a pipeline emergency switching device for a subway shield grouting system, which has the characteristic of improving practicability.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a subway shield grouting system pipeline emergency switching device, including a grouting communicating vessel, a discharge pipe is arranged on the left portion of the grouting communicating vessel, a plurality of through holes are arranged on the right portion of the grouting communicating vessel, and a feed pipe is connected through each of the through holes, the right portion of the grouting communicating vessel is rotatably connected to a connecting rod through a bearing, a motor is installed on the right portion of the connecting rod, and a closing device is arranged on the left portion of the connecting rod.

[0009] Furthermore, the closing device includes a shielding plate, and a plurality of rolling grooves are provided on the right portion of the shielding plate, and each of the rolling grooves is rollingly connected with a rolling ball.

[0010] Furthermore, a slide groove is provided in the middle of the inner side wall of the right part of the grouting connecting vessel, and is slidably arranged with the rolling balls, and the outsides of several of the rolling balls are coated with an anti-corrosion coating.

[0011] Furthermore, the end surface of the shielding plate is arranged in an arc shape, and the outside of the shielding plate is coated with an anti-corrosion coating.

[0012] Preferably, a plurality of threaded holes are provided at the front of the grouting communication vessel, and each of the threaded holes is threadedly connected with a bolt, and the external threads of the plurality of the bolts are threadedly connected with a sealing cover.

[0013] Preferably, one end of several of the feed pipes is provided with an exhaust valve, and the front part of several of the feed pipes is provided with a high-pressure resistant peep mirror.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a pipeline emergency switching device for a subway shield grouting system, which has the following beneficial effects:

[0016] The pipeline emergency switching device of the subway shield grouting system has the following advantages: when the slurry inside the feed pipeline enters the grouting communication vessel, it will not directly impact on the baffle plate, but will impact on the side wall of the grouting communication vessel, and flow back to fill the grouting communication vessel until it is filled. At this time, the slurry inside the grouting communication vessel will be squeezed on one side end face of the baffle plate, generating an extrusion force on the baffle plate, and since the end face of the baffle plate is attached to the side wall of the grouting communication vessel, the extrusion force will be transmitted to the grouting communication vessel, and will not generate a tearing force on the connection between the extrusion plate and the connecting rod, and will not cause damage to the connection between the two, thereby improving the practicality to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model after removing the bolts and the sealing cover;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model after removing the shielding plate, the sealing cover and the feed pipe;

[0020] Figure 4 It is an enlarged structural diagram of the connecting rod, motor, shielding plate and rolling ball of the utility model.

[0021] In the figure: 1. grouting connecting vessel; 2. discharge pipe; 3. through hole; 4. feed pipe; 5. connecting rod; 6. motor; 7. baffle plate; 8. rolling ball; 9. slide groove; 10. threaded hole; 11. bolt; 12. sealing cover; 13. exhaust valve; 14. high pressure resistant peep mirror. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4The utility model discloses a pipeline emergency switching device for a subway shield grouting system, comprising a grouting communicating vessel 1, a front portion of the grouting communicating vessel 1 is provided with a plurality of threaded holes 10, and all of them are threadedly connected with bolts 11, and the outer threads of the plurality of bolts 11 are threadedly connected with sealing covers 12, and the sealing covers 12 are installed on the grouting communicating vessel 1 by threaded connection between the bolts 11 and the threaded holes 10, a left portion of the grouting communicating vessel 1 is provided with a discharge pipe 2, and the slurry in the grouting communicating vessel 1 is discharged through the discharge pipe 2, and a right portion of the grouting communicating vessel 1 is provided with a plurality of through holes 3, and all of them are penetrated and connected with inlet pipes 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 64, 65, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, The grouting communicating vessel 1 is provided with a material pipeline 4, and the external slurry enters the grouting communicating vessel 1 through a feed pipeline 4. An exhaust valve 13 is provided at one end of the several feed pipelines 4. The gas in the feed pipeline 4 can be discharged by opening the valve. The front part of the several feed pipelines 4 is provided with a high-pressure peep mirror 14 for viewing the internal slurry. The right part of the grouting communicating vessel 1 is rotatably connected with a connecting rod 5 through a bearing. A motor 6 is installed on the right part of the connecting rod 5. A closing device is provided on the left part of the connecting rod 5. The motor 6 is started, and the motor 6 rotates, driving the connecting rod 5 to rotate, and then driving the closing device to rotate, blocking the grouting communicating vessel 1. The corresponding through hole 3 is blocked, thereby switching the feed pipe 4, and the slurry in the feed pipe 4 that is not blocked by the through hole 3 enters the grouting communication vessel 1, and then fills the grouting communication vessel 1. The slurry is squeezed on the left end face of the closing device, and then the right end face of the closing device is attached to the side wall of the grouting communication vessel 1, and the generated extrusion force is transmitted to the grouting communication vessel 1, so that the closing device and the connecting rod 5 will not be damaged. The closing device includes a baffle plate 7, and a plurality of rolling grooves are arranged on the right side of the baffle plate 7, and each of them is rollingly connected with a rolling ball 8. The inner side wall of the right part of the grouting communication vessel 1 A slide groove 9 is provided in the middle part, and it is slidably arranged with the ball 8. When the motor 6 drives the connecting rod 5 to rotate, it drives the baffle plate 7 and several balls 8 to rotate. The balls 8 roll in the slide groove 9 of the grouting connecting vessel 1 to support the baffle plate 7. At the same time, the baffle plate 7 blocks one of the through holes 3, thereby blocking the feed pipe 4 on one side of the through hole 3. The outside of several balls 8 are coated with an anti-corrosion coating to improve the anti-corrosion effect. The end face of the baffle plate 7 is arranged in an arc shape to reduce the impact force of the slurry impacting the arc end face of the baffle plate 7. The outside of the baffle plate 7 is coated with an anti-corrosion coating to improve the anti-corrosion effect.

[0024] To sum up, when the subway shield grouting system pipeline emergency switching device is in use, the slurry enters the grouting communication vessel 1 through one of the feed pipes 4, fills the interior of the grouting communication vessel 1, and the slurry is squeezed on the left end face of the baffle plate 7, and then the slurry is discharged through the discharge pipe 2 on the left side of the grouting communication vessel 1. When one of the grouting pumps is damaged and another spare grouting pump needs to be replaced, the motor 6 can be started, the motor 6 rotates, driving the connecting rod 5 to rotate, and then driving the baffle plate 7 and the ball 8 to rotate. At this time, the ball 8 rolls in the slide groove 9 of the grouting communication vessel 1, and then the baffle plate 7 leaves the blocked through hole 3 and rotates to the through hole 3 aligned with the feed pipe 4 used by the damaged grouting pump for blocking. At this time, the spare grouting pump is started, and the slurry is discharged into the grouting communication vessel 1 through the feed pipe 4, and then discharged through the discharge pipe 2.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline emergency switching device for a subway shield grouting system, comprising a grouting communicating vessel (1), a discharge pipeline (2) being arranged on the left side of the grouting communicating vessel (1), characterized in that: The right part of the grouting connecting vessel (1) is provided with a plurality of through holes (3), and each of the through holes is connected with a feed pipe (4). The right part of the grouting connecting vessel (1) is rotatably connected with a connecting rod (5) via a bearing. A motor (6) is installed on the right part of the connecting rod (5), and a closing device is provided on the left part of the connecting rod (5).

2. According to claim 1, a subway shield grouting system pipeline emergency switching device is characterized in that: The closing device comprises a shielding plate (7), the right part of which is provided with a plurality of rolling grooves, each of which is rollingly connected with a rolling ball (8).

3. The subway shield grouting system pipeline emergency switching device according to claim 2 is characterized by: A slide groove (9) is provided in the middle of the inner side wall of the right part of the grouting connecting vessel (1), and is slidably arranged with the rolling balls (8), and the exteriors of several of the rolling balls (8) are coated with an anti-corrosion coating.

4. The subway shield grouting system pipeline emergency switching device according to claim 3 is characterized by: The end surface of the shielding plate (7) is arranged in an arc shape, and the exterior of the shielding plate (7) is coated with an anti-corrosion coating.

5. The subway shield grouting system pipeline emergency switching device according to claim 4 is characterized in that: The front part of the grouting connecting vessel (1) is provided with a plurality of threaded holes (10), each of which is threadedly connected with a bolt (11), and the outer surfaces of the plurality of bolts (11) are threadedly connected with a sealing cover (12).

6. The subway shield grouting system pipeline emergency switching device according to claim 5 is characterized in that: An exhaust valve (13) is provided at one end of each of the feed pipes (4), and a high-pressure resistant peep mirror (14) is provided at the front of each of the feed pipes (4).

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