Water pump-free sand-water mixing system and engineering vessel

Abstract

The present application provides a water-pump-free sand-water mixing system, comprising: a mixing device, on which a water inlet is provided; a mounting frame, through which the mixing device is connected to an engineering vessel and can move up and down; a quantitative sand supply device, which is connected to the mixing device through a sand supply pipe; a sand pumping device, which is connected to the mixing device through a sand pumping pipe; wherein the mixing device can be lowered along the mounting frame to a predetermined position submerged in water, so that water from the external environment enters the mixing device through the water inlet, and is mixed with sand fed into the mixing device from the quantitative sand supply device, thereby obtaining a mortar with a predetermined sand-water ratio. The water-pump-free sand-water mixing system provided in the embodiment of the present application eliminates the need to set a water pump for water supply, and instead installs the mixing device on the side of the engineering vessel, lifts the mixing device to a certain depth below the water surface through the mounting frame, and draws the sand-water mixture through the sand pumping device to generate negative pressure to introduce water from the external environment into the mixing device, thereby achieving automatic water supply to the mixing device from the external environment.

Description

Technical Field

[0001] The invention belongs to the technical field of immersed tube tunnel sand filling, and in particular relates to a water pump-free sand-water mixing system and an engineering vessel. Background Art

[0002] The immersed tube tunnel is a tunnel segment prefabricated in sections. Temporary water stop heads are set at both ends of each section, and then floated to the tunnel axis and sunk in the pre-dug trench (foundation trench). The underwater connection between the sections is completed, the temporary water stop heads are removed, the foundation trench is backfilled to protect the immersed tube, and the internal facilities of the tunnel are laid, thus forming a complete underwater channel. The immersed tube tunnel is one of the main methods for building underwater tunnels in inland rivers in cities. However, due to the conditions of inland rivers, it is difficult to float and sink the sections. Most immersed tube tunnels eliminate harmful gaps between the bottom surface of the pipe section and the bottom of the foundation trench by filling the sand cushion layer after the section is sunk. The conventional process for filling inland river immersed tubes with sand is as follows: the mixing tank is installed above the ship deck, and the water pump is placed in the water, and the water pump supplies water to the mixing tank. The belt conveyor feeds the mixing tank, and then it is mixed into a sand-water mixture of 1:10 or other ratios. The sand pumping device then extracts the sand-water mixture and pours it to the bottom of the immersed tube to form a foundation. Summary of the invention

[0003] The present application solves one of the technical problems in the related art at least to some extent.

[0004] To this end, the first aspect of the present application provides a waterless pump sand-water mixing system, comprising:

[0005] A stirring device, on which a water inlet is provided;

[0006] A mounting frame, through which the stirring device is connected to the engineering vessel and can move up and down relative to the engineering vessel;

[0007] A quantitative sand supply device, which is connected to the stirring device through a sand delivery pipe;

[0008] A sand pumping device, which is connected to the stirring device through a sand pumping pipe;

[0009] Among them, the stirring device can be lowered along the mounting frame to a predetermined position submerged in water, so that water in the external environment can enter the stirring device through the water inlet and mix with the sand fed into the stirring device from the quantitative sand supply device, thereby obtaining mortar with a predetermined sand-water ratio.

[0010] The pumpless sand-water mixing system provided in the embodiment of the present application eliminates the need for a water pump for water supply. Instead, the mixing device is installed on the side of the engineering ship, and the mixing device is lifted and lowered below the water surface by a mounting frame, so that water from the external environment is introduced into the mixing device by water pressure, thereby achieving automatic water supply for the mixing device from the external environment. By controlling the sand supply of the quantitative sand supply device and the flow rate of the sand pumping device, the ratio of sand and water mixing in the mixing device can be guaranteed.

[0011] In some embodiments of the present application, the mounting frame includes:

[0012] A first slideway, which is mounted on the side of the ship;

[0013] a first sliding member, which is mounted on the stirring device;

[0014] The first sliding member can move up and down in the first slideway.

[0015] In some embodiments of the present application, the first slideway extends in a vertical direction; the first sliding member is installed on one side of the stirring device and extends in a vertical direction.

[0016] In some embodiments of the present application, a mounting plate is provided at a position on the stirring device corresponding to the first sliding member, and the mounting plate is fixedly mounted to the first sliding member.

[0017] In some embodiments of the present application, the waterless pump sand-water mixing system further includes:

[0018] A mounting frame slideway, which is arranged on the engineering ship and extends in a horizontal direction;

[0019] The mounting frame also includes:

[0020] A second sliding member connected to the first slideway and perpendicular to the first slideway;

[0021] The second slide member is movable horizontally in the mounting frame slideway.

[0022] In some embodiments of the present application, the second sliding member extends in a horizontal direction.

[0023] In some embodiments of the present application, the mounting frame includes:

[0024] A reinforcement member connects the first slideway and the second slide member.

[0025] In some embodiments of the present application, the stirring device includes: a stirring tank and a stirring paddle located in the stirring tank; the interior of the stirring tank is divided into a stirring influence area and a stirring area located below the stirring influence area; the stirring paddle is located in the stirring area.

[0026] In some embodiments of the present application, the outlet end of the sand pumping device is connected to a sand filling pipe, and a flow meter is connected between the sand filling pipe and the sand pumping device.

[0027] A second aspect of the present application provides an engineering vessel, comprising any of the water pump-free sand-water mixing systems described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 This is a schematic diagram of the structure of a water-pump-free sand-water mixing system provided in one embodiment of the present application, wherein the mixing device is lowered to be submerged in water;

[0030] Figure 2 This is a schematic diagram of the structure of a water pump-free sand-water mixing system provided in one embodiment of the present application, wherein the mixing device is disassembled from an engineering vessel;

[0031] Figure 3 This is a schematic diagram of the structure of a water pump-free sand-water mixing system provided in an embodiment of the present application, wherein the mixing device rises to be out of the water surface;

[0032] Figure 4 This is a schematic diagram of the structure of a water pump-free sand-water mixing system provided in one embodiment of the present application, wherein the mixing device is located on the deck of an engineering vessel;

[0033] In the figure:

[0034] 1. Stirring device; 11. Water inlet; 12. Stirring tank; 121. Stirring influence area; 122. Stirring area; 13. Stirring paddle; 2. Mounting frame; 21. First slideway; 22. First sliding member; 23. Second sliding member; 24. Reinforcement member; 3. Quantitative sand supply device; 4. Sand delivery pipe; 5. Sand pumping device; 6. Sand pumping pipe; 7. Mounting plate; 8. Mounting frame slideway; 9. Sand filling pipe; 91. Flow meter. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0036] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can be applied to other similar scenarios based on these drawings without any creative work.

[0037] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0038] In the description of the present application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0039] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] like Figure 1 As shown, a water pump-free sand-water mixing system provided by an exemplary embodiment of the present application includes:

[0041] A stirring device 1, on which a water inlet 11 is provided;

[0042] A mounting frame 2, through which the stirring device 1 is connected to the engineering vessel 10, and the stirring device 1 can move up and down relative to the engineering vessel 10;

[0043] A quantitative sand supply device 3, which is connected to the stirring device 1 through a sand delivery pipe 4;

[0044] A sand pumping device 5, which is connected to the stirring device 1 through a sand pumping pipe 6;

[0045] Among them, the stirring device 1 can be lowered along the mounting frame 2 to a predetermined position submerged in water, so that water in the external environment enters the stirring device 1 through the water inlet 11 and mixes with the sand fed into the stirring device 1 from the quantitative sand supply device 3, thereby obtaining mortar with a predetermined sand-water ratio.

[0046] The water pump-free sand-water mixing system provided in the embodiment of the present application cancels the setting of the water pump for water supply, but installs the mixing device on the side of the engineering ship, and lifts the mixing device to a certain depth below the water surface through the mounting frame, so as to use the water pressure to introduce the water from the external environment into the mixing device, so as to achieve the automatic water supply for the mixing device by the external environment. By controlling the sand delivery amount of the quantitative sand supply device and the sand pumping amount of the sand pumping device, the ratio of the sand and water mixture in the mixing device can be guaranteed. Since the density of sand is greater than that of water, injecting sand into the mixing device can discharge water, so as long as the sand delivery amount and the sand pumping amount are matched, the ratio of the sand and water mixture can be guaranteed. The sand delivery amount of the quantitative sand supply device is matched with the sand pumping amount of the sand pumping device, and the amount of water entering the mixing device is passive inflow, and its inflow amount is: the flow rate of the sand pumping device-the volume occupied by sand and cement. In theory, as long as the ratio of the sand delivery amount and the sand pumping amount can be matched, the sand-water mixture ratio can be guaranteed. In actual application, the initial sand-water ratio in the stirring device is controlled to be the theoretical value (predetermined sand-water ratio), and then the stirring paddle is turned on to make the sand and water evenly stirred, and then the sand pumping device is turned on to pump sand and the quantitative sand supply device is turned on to supply sand. The water pump-free sand-water mixing system provided in the embodiment of the present application eliminates the setting of the water pump, which greatly reduces the energy consumption of the sand-water mixing system. For example, when three 300-cubic-meter water pumps are eliminated, the power supply is reduced by 37KW*3 (reducing the cost of the generator), and the oil consumption is reduced by 37*0.2*3=22L per hour.

[0047] It is worth noting that the flow rate of water diversion is related to the size of the water inlet. The larger the water inlet, the faster the flow rate of water diversion. The diameter of the water inlet is controlled as small as possible while ensuring water supply to reduce the probability of sand-water mixture overflowing from the water inlet due to stirring. The flow rate of water diversion is related to the depth of the stirring device immersed in the water. The deeper the depth of the stirring device immersed in the water, the faster the flow rate of water diversion. However, when the depth of the stirring device immersed in the water reaches a threshold, the flow rate of water diversion no longer increases when the depth increases.

[0048] In some embodiments of the present application, the mounting frame 2 includes:

[0049] A first slide 21, which is installed on the side of the ship;

[0050] A first sliding member 22, which is mounted on the stirring device 1;

[0051] The first sliding member 22 can move up and down in the first slideway 21 .

[0052] In some embodiments of the present application, the first slideway 21 extends in the vertical direction; the first sliding member 22 is installed on one side of the stirring device and extends in the vertical direction. Considering that the stirring device is large in the vertical direction, the first sliding member 22 is also configured to extend in the vertical direction, so that the connection portion between the first sliding member 22 and the stirring device extends in the vertical direction, and the connection strength and stability are improved. The first slideway 21 extends in the vertical direction, so that the stirring device can be raised and lowered along the first slideway 21 in the vertical direction.

[0053] In some embodiments of the present application, a mounting plate 7 is provided at a position corresponding to the first sliding member 22 on the stirring device 1, and the mounting plate 7 is fixedly mounted on the first sliding member 22. The mounting plate 7 serves as a carrier for mounting the mounting frame 2 and the stirring device 1, and the mounting plate 7 can be designed to fit the stirring device 1, so that the mounting plate 7 does not affect the overall structure of the stirring device 1. In addition, the mounting method of the first sliding member 22 and the stirring device 1 can be flexibly designed.

[0054] In some embodiments of the present application, the waterless pump sand-water mixing system further comprises:

[0055] A mounting frame slideway 8, which is arranged on the engineering vessel and extends in a horizontal direction;

[0056] The mounting frame also includes:

[0057] A second sliding member 23, which is connected to the first slideway 21 and is perpendicular to the first slideway 21;

[0058] The second sliding member 23 can move horizontally in the mounting frame slideway 8 .

[0059] like Figure 3 and Figure 4 As shown, the mounting frame is fixedly installed on the engineering ship, the mounting frame slideway extends in the horizontal direction, and the stirring device 1 rises along the first slideway 21 to a position above the deck of the engineering ship 10. At this time, when the second sliding member 23 moves horizontally along the mounting frame slideway 8, the stirring device 1 can also move horizontally along the second sliding member 23. The mounting frame slideway 8 and the second sliding member 23 are provided to facilitate moving the stirring device on the deck for daily maintenance or other operations that require adjusting the position of the stirring device.

[0060] In some embodiments of the present application, the second sliding member 23 extends in a horizontal direction.

[0061] The second sliding member 23 is arranged to extend in the horizontal direction, so that the second sliding member 23 has a certain length in the transverse direction, and the second sliding member 23 can better support the mounting frame 2 in the vertical direction.

[0062] In some embodiments of the present application, the mounting frame includes:

[0063] A reinforcing member 24 connects the first slideway 21 and the second sliding member 23 .

[0064] The reinforcement member 24 connects the first slideway 21 and the second slide member 23 , so that the structure of the mounting frame 2 is more stable.

[0065] In some embodiments of the present application, the stirring device 1 includes: a stirring tank 12 and a stirring paddle 13 located in the stirring tank 12; the stirring tank 12 is divided into a stirring influence area 121 and a stirring area 122 located below the stirring influence area 121; the stirring paddle 13 is located in the stirring area 122. The boundary height between the stirring influence area and the stirring area is related to the form of the stirring blade and the stirring speed.

[0066] In some embodiments of the present application, the outlet end of the sand pumping device 5 is connected to a sand filling pipe 9, and a flow meter 91 is connected between the sand filling pipe 9 and the sand pumping device 5. The flow meter is used to detect the amount of sand pumped by the sand pumping device, so that the amount of sand pumped matches the amount of sand delivered by the quantitative sand supply device, and the ratio of the amount of sand delivered to the amount of sand pumped is matched, thereby ensuring the ratio of the sand-water mixture.

[0067] The present application also provides an engineering vessel, which adopts the waterless pump sand-water mixing system described above. When the engineering vessel is used in the sand filling process of the immersed tube tunnel, the working process is as follows: sand is pre-stored in the quantitative sand supply device 3, and the sand is transported to the mixing device 1 through the sand pipe 4, for example, by a belt conveyor, and the sand is transported to the mixing device 1, and the mixing device 1 is pushed out of the deck area along the mounting frame slide 8, and then the mixing device 1 is lowered along the first slide 21 to a predetermined position submerged in the water, so that the initial sand-water ratio in the mixing tank 12 is a predetermined value, and the stirring paddle 13 of the stirring device is turned on to mix the sand and water evenly, and then the sand pumping device 5 and the quantitative sand supply device 3 are turned on at the same time to maintain the balance between the amount of sand input and the amount of sand pumped, so that the sand-water ratio in the provided mortar is stable.

[0068] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0069] The above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present application, which should be included in the scope of the technical solution requested for protection in the present application.

Claims

1. A water pump-free sand-water mixing system, characterized in that: include: A stirring device, on which a water inlet is provided; A mounting frame, through which the stirring device is connected to the engineering vessel and can move up and down relative to the engineering vessel; the mounting frame includes: A first slideway, which is mounted on the side of the ship; a first sliding member, which is mounted on the stirring device; The first sliding member can move up and down in the first slideway; A quantitative sand supply device, which is connected to the stirring device through a sand delivery pipe; A sand pumping device, which is connected to the stirring device through a sand pumping pipe; Among them, the stirring device can be lowered along the mounting frame to a predetermined position submerged in water, so that water in the external environment can enter the stirring device through the water inlet and mix with the sand fed into the stirring device from the quantitative sand supply device, thereby obtaining mortar with a predetermined sand-water ratio.

2. The waterless pump sand-water mixing system according to claim 1, characterized in that: The first slideway extends in a vertical direction; the first sliding member is installed on one side of the stirring device and extends in a vertical direction.

3. The waterless pump sand-water mixing system according to claim 2, characterized in that: A mounting plate is provided on the stirring device at a position corresponding to the first sliding member, and the mounting plate is fixedly mounted to the first sliding member.

4. The waterless pump sand-water mixing system according to claim 1, characterized in that: Also includes: A mounting frame slideway, which is arranged on the engineering ship and extends in a horizontal direction; The mounting frame also includes: A second sliding member connected to the first slideway and perpendicular to the first slideway; The second slide member is movable horizontally in the mounting frame slideway.

5. The waterless pump sand-water mixing system according to claim 4, characterized in that: The second sliding member extends along a horizontal direction.

6. The waterless pump sand-water mixing system according to claim 5, characterized in that: The mounting frame comprises: A reinforcement member connects the first slideway and the second slide member.

7. The waterless pump sand-water mixing system according to claim 3, characterized in that: The stirring device comprises: a stirring tank and a stirring paddle located in the stirring tank; the interior of the stirring tank is divided into a stirring influence area and a stirring area located below the stirring influence area; the stirring paddle is located in the stirring area.

8. The waterless pump sand-water mixing system according to claim 7, characterized in that: The outlet end of the sand pumping device is connected to a sand filling pipe, and a flow meter is connected between the sand filling pipe and the sand pumping device.

9. An engineering ship, characterized in that: A waterless pump sand-water mixing system comprising the system described in any one of claims 1-8.

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