Residue soil pumping equipment for shield construction

Abstract

The invention discloses muck pumping equipment for shield construction, and relates to the technical field of pumping equipment. The residue soil pump truck comprises a towing bracket and a pump pipe, a residue soil pump truck body is installed on the top face of the towing bracket, a material pumping port is formed in the surface of the residue soil pump truck body, a high-pressure water injection ring is embedded in the surface of the material pumping port, and a high-pressure water supply mechanism is arranged at the input end of the high-pressure water injection ring. Water is pressurized and guided into the high-pressure water injection ring through the high-pressure water supply mechanism, high-pressure water is ejected out of the high-pressure water injection ring and continuously injected into the pumping port and the inner side of the pump pipe, and a high-pressure water film is formed between muck and the inner wall of the pump pipe, so that friction between the pump pipe and the muck is greatly reduced, and the service life of the muck is prolonged. And therefore, the pumping distance of the muck pump truck can be effectively increased, and the pipe blockage of the muck in the pump pipe can be effectively reduced and even eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of pumping equipment, and in particular to slag pumping equipment used in shield construction. Background Art

[0002] With the rapid development of science and technology in my country and the continuous improvement of people's quality of life, my country's transportation construction has also achieved rapid development, and the transportation mode is undergoing a fundamental change. At the same time, people's convenient travel is gradually being realized. As a convenient travel method for cities, especially large cities, the subway is an economical, environmentally friendly and highly reliable mode of transportation. It is currently becoming an important field in my country's transportation infrastructure construction and a hot spot of social and economic concern. In subway construction, the shield method is the most widely used type of construction technology, and the earth pressure balance shield machine is the most commonly used mechanical tool in this type of construction. Therefore, it is of great significance to optimize the slag discharge method of the subway earth pressure balance shield machine construction.

[0003] The slag pump truck is based on the concrete pump truck as its prototype. Its actual working principle is the same as that of the concrete pump truck, but it is essentially different from the concrete pump truck, mainly reflected in the pumping time. The pumping distance of the concrete pump truck is generally within a few hundred meters, while the slag pump truck needs to pump at least one thousand meters because it is constructed in the subway tunnel to meet the actual construction needs. When the slag pump truck is transporting the slag, since the slag needs to be transported over a long distance, the friction between the slag and the inner wall of the pump pipe will greatly affect the transportation efficiency of the slag, and may even cause blockage of the pump pipe.

[0004] Therefore, a slag pumping equipment for shield construction is proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the problems raised in the above background technology. The present invention provides a slag pumping equipment for shield construction.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A slag pumping equipment for shield construction comprises a trailer and a pump pipe, wherein a slag pump body is mounted on the top surface of the trailer, and a pumping port is arranged on the surface of the slag pump body, a high-pressure water injection ring is embedded on the surface of the pumping port, a high-pressure water supply mechanism is arranged at the input end of the high-pressure water injection ring, and quick joints for connecting the pumping port and the pump pipe and for connecting the pump pipes are arranged on the end surface of the high-pressure water supply mechanism and the end surface of the pump pipe.

[0008] Preferably, the trailer includes a support frame, the bottom surface of the support frame is provided with a rolling wheel, the surface of the support frame is fixedly mounted with a threaded sleeve, and the internal thread of the threaded sleeve is connected with a screw rod, the bottom end of the screw rod is provided with a universal wheel, and the top surface of the support frame is mounted with a slag pump truck body.

[0009] Preferably, the high-pressure water supply mechanism includes a pipeline, a pipeline is fixedly installed on the surface of the high-pressure water injection ring, a high-pressure water pump is arranged on the surface of the pipeline, and the high-pressure water pump is fixedly installed on the trailer through a bracket, a connection port is fixedly installed on the end of the pipeline, and a filter is fixedly installed inside the connection port.

[0010] Since the present invention needs to solve the technical problem that the slag particles transported by slag pump are large and suffer long-term wear, which leads to a decrease in the stress limit of the pipeline, the present invention, on the one hand, solves the damage to the pump pipe wall caused by the friction of slag transportation by designing a high-pressure water supply mechanism, and injects water into the pump pipe through a high-pressure water injection ring and a high-pressure water pump, especially solving the problem of transportation with a length of more than one kilometer; on the other hand, since the pipeline of the high-pressure water supply mechanism itself will be affected by the impact force of the pipeline wall during high-pressure water injection, resulting in a decrease in pipeline stress, and the long-term effect leads to the rupture of the pipe wall, the present invention improves the material of the pipeline and the sealing layer material at the connection of the connecting port.

[0011] The sealing layer material of the connection port including the flange screw connection is one of asphalt hemp, liquid polytetrafluoroethylene, liquid polyvinyl chloride paste resin, polysulfide sealing paste or polyurethane sealing paste or a combination thereof, and has a good sealing effect.

[0012] The present invention also provides a pipeline sealing material composition for a high-pressure water supply mechanism, which is specifically used in the attached Figure 4 The sealing layer is coated between the sealing end clamping plate and the connecting plate or on the outer side of the connecting end, and the sealing material composition is used to include the following components in parts by weight: fine asphalt hemp with a diameter of 1-2 mm (45-55), liquid polytetrafluoroethylene (8-12), liquid polyvinyl chloride paste resin (4-6), polyurethane sealing paste or polyurethane sealing paste (4-6);

[0013] Preferably, the pipe sealing material composition of the pressure water supply mechanism comprises the following components in parts by weight: 50 fine asphalt hemp fibers with a diameter of 1-2 mm, 10 liquid polytetrafluoroethylene, 5 liquid polyvinyl chloride paste resin, polyurethane sealing paste or 5 polyurethane sealing paste;

[0014] The preparation method of the pipeline sealing material composition of the pressure water supply mechanism is as follows: the above-mentioned fine asphalt hemp with a diameter of 1-2 mm is evenly mixed with the above-mentioned liquid polytetrafluoroethylene, liquid polyvinyl chloride paste resin, polyurethane sealing paste or polyurethane sealing paste.

[0015] The above-mentioned asphalt hemp fiber or hemp wool has the advantages of high temperature resistance, corrosion resistance, waterproof and moisture-proof, heat insulation, sound absorption and sound insulation; polytetrafluoroethylene has excellent chemical stability, corrosion resistance, sealing, high lubricity and non-stickiness, electrical insulation and good anti-aging resistance; liquid polyvinyl chloride paste resin has good flow and lubricity; polyurethane sealant or polyurethane sealant has good sealing.

[0016] The sealing composition of the present invention has better chemical stability, ductility and corrosion resistance than the current single polyurethane sealing paste or polyurethane sealing paste. Experiments have shown that the sealing composition can achieve the technical effect of having complete sealing performance while extending its service life by 2 times.

[0017] The steel material of the pipeline of the high-pressure water supply mechanism of the present invention is preferably 180mm in diameter and 10mm in thickness. The pipeline is preferably an elastic material (N-80 steel), with a corresponding elastic modulus / GPa of 200 and a Poisson's ratio of 0.35, having good water-resistant and high-pressure resistance, and ensuring a certain elastic function, and being able to resist water pressure stress. Experiments have shown that the compressive strength can be increased by 20% or more, thereby extending the service life of the pipeline. The present invention can also use high-quality carbon structural steel on the market, steel grade 20G.

[0018] Preferably, the quick connector includes a clamping plate, the end of the pump port and the end face of the pump tube are fixedly mounted with the clamping plate, and the surface of the clamping plate is provided with a hole groove and an arc-shaped groove, the other end of the pump tube is fixedly mounted with a connecting plate, and the end face of the connecting plate is fixedly mounted with a stepped shaft.

[0019] Preferably, the nozzle and pumping port of the high-pressure water injection ring are arranged correspondingly to the inner wall of the pump pipe.

[0020] Preferably, the major diameter of the stepped shaft is equal to the diameter of the hole groove, the minor diameter of the stepped shaft is equal to the width of the arc-shaped slot, and the stepped shaft and the interior of the arc-shaped slot are slidably arranged.

[0021] The beneficial effects of the present invention are as follows:

[0022] The trailer makes it possible to support and place the slag pump truck body, and also to drag and move the slag pump truck body. When the slag is pumped, the water supply pipe is connected to the end of the high-pressure water supply mechanism, and the water is pressurized and introduced into the interior of the high-pressure water injection ring through the high-pressure water supply mechanism. The high-pressure water is ejected from the high-pressure water injection ring and continuously injected into the pump port and the inner side of the pump pipe. A high-pressure water film is formed between the slag and the inner wall of the pump pipe, thereby greatly reducing the friction between the pump pipe and the slag, thereby reducing the resistance to slag transportation, which can effectively increase the pumping distance of the slag pump truck, and effectively reduce or even eliminate the blockage of the pump pipe by the slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 is a rear view of the present invention;

[0025] Figure 3 is a partial front cross-sectional view of the present invention;

[0026] Figure 4 is a partial exploded view of the present invention;

[0027] Figure 5 It is a schematic diagram of the high-pressure water injection ring and the high-pressure water supply mechanism of the present invention;

[0028] Figure numerals: 1, trailer; 101, support frame; 102, rolling; 103, threaded casing; 104, screw; 105, universal wheel; 2, slag pump truck body; 21, pumping port; 3, high-pressure water injection ring; 4, high-pressure water supply mechanism; 401, pipeline; 402, high-pressure water pump; 403, connecting port; 404, filter; 5, quick connector; 501, clamping plate; 502, hole groove; 503, arc-shaped clamping groove; 504, connecting plate; 505, stepped shaft; 6, pump pipe. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0032] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the novel product of the invention is usually placed when in use. 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] like Figures 1 to 5 As shown, a slag pumping equipment for shield construction includes a trailer 1 and a pump pipe 6. A slag pump body 2 is installed on the top surface of the trailer 1, and a pump port 21 is arranged on the surface of the slag pump body 2. A high-pressure water injection ring 3 is embedded on the surface of the pump port 21. A high-pressure water supply mechanism 4 is arranged at the input end of the high-pressure water injection ring 3. The end surface of the high-pressure water supply mechanism 4 and the end surface of the pump pipe 6 are both provided with quick connectors 5 for connecting the pump port 21 and the pump pipe 6 and connecting the pump pipes 6 with each other. More specifically, the trailer 1 makes it possible to support and place the slag pump truck body 2, and also to drag and move the slag pump truck body 2. When the slag is pumped, the water supply pipe is connected to the end of the high-pressure water supply mechanism 4, and the high-pressure water supply mechanism 4 allows water to be pressurized and introduced into the interior of the high-pressure water injection ring 3. The high-pressure water is ejected from the high-pressure water injection ring 3 and continuously injected into the pump port 21 and the inner side of the pump pipe 6. A high-pressure water film is formed between the slag and the inner wall of the pump pipe 6, thereby greatly reducing the friction between the pump pipe 6 and the slag, thereby reducing the resistance to slag transportation. This can effectively increase the pumping distance of the slag pump truck, and thereby effectively reduce or even eliminate the blockage of the pump pipe 6 by the slag.

[0034] The trailer 1 includes a support frame 101, a rolling bearing 102 is provided on the bottom surface of the support frame 101, a threaded casing 103 is fixedly installed on the surface of the support frame 101, and a screw rod 104 is inserted into the internal thread of the threaded casing 103, a universal wheel 105 is provided at the bottom end of the screw rod 104, and a slag pump truck body 2 is installed on the top surface of the support frame 101. More specifically, the slag pump truck body 2 can be moved by the rolling bearing 102 and the universal wheel 105 on the bottom surface of the support frame 101, and the universal wheel 105 is vertically moved by the meshing of the screw rod 104 and the threaded casing 103, so that the support frame 101 and the slag pump truck body 2 are supported by the universal wheel 105.

[0035] The high-pressure water supply mechanism 4 includes a pipe 401, the pipe 401 is fixedly installed on the surface of the high-pressure water injection ring 3, and a high-pressure water pump 402 is arranged on the surface of the pipe 401, and the high-pressure water pump 402 is fixedly installed with the trailer 1 through a bracket, and a connection port 403 is fixedly installed at the end of the pipe 401, and a filter 404 is fixedly installed inside the connection port 403. More specifically, the connection port 403 is connected to the water supply pipe, and the water is pressurized by the high-pressure water pump 402 and input into the inside of the high-pressure water injection ring 3 through the pipe 401, and the impurities in the water are filtered through the connection port 403.

[0036] Since the present invention needs to solve the technical problem that the slag particles transported by slag pumping are large and suffer long-term wear, which leads to a decrease in the stress limit of the pipeline, the present invention, on the one hand, solves the damage to the wall of the pump pipe 6 caused by the friction of slag transportation by designing a high-pressure water supply mechanism 4, and injects water into the pump pipe 6 through a high-pressure water injection ring 3 and a high-pressure water pump 402, especially solves the problem of transportation with a length of more than 1,000 meters; on the other hand, since the pipeline 401 of the high-pressure water supply mechanism itself will be affected by the impact force of the wall of the pipeline 40) during high-pressure water injection, resulting in a decrease in pipeline stress and a problem of long-term action causing the pipeline wall to rupture, the present invention improves the material of the pipeline 401 and the sealing layer material at the connection of the connection port 403.

[0037] The sealing layer material of the connection port 403 including the flange screw connection is one or a combination of asphalt hemp, liquid polytetrafluoroethylene, liquid polyvinyl chloride paste resin, polysulfide sealing paste or polyurethane sealing paste, which has a good sealing effect.

[0038] The present invention also provides a pipeline sealing material composition for a high-pressure water supply mechanism, which is specifically used in the attached Figure 4 The sealing layer is coated between the sealing end clamping disc 501 and the connecting disc 504 or on the outer side of the connecting end, and the sealing material composition is used to include the following components in parts by weight: fine asphalt hemp with a diameter of 1-2 mm (45-55), liquid polytetrafluoroethylene (8-12), liquid polyvinyl chloride paste resin (4-6), polyurethane sealing paste or polyurethane sealing paste (4-6);

[0039] Preferably, the pipe sealing material composition of the pressure water supply mechanism comprises the following components in parts by weight: 50 fine asphalt hemp fibers with a diameter of 1-2 mm, 10 liquid polytetrafluoroethylene, 5 liquid polyvinyl chloride paste resin, polyurethane sealing paste or 5 polyurethane sealing paste;

[0040] The preparation method of the pipeline sealing material composition of the pressure water supply mechanism is as follows: the above-mentioned fine asphalt hemp with a diameter of 1-2 mm is evenly mixed with the above-mentioned liquid polytetrafluoroethylene, liquid polyvinyl chloride paste resin, polyurethane sealing paste or polyurethane sealing paste.

[0041] The above-mentioned asphalt hemp fiber or hemp wool has the advantages of high temperature resistance, corrosion resistance, waterproof and moisture-proof, heat insulation, sound absorption and sound insulation; polytetrafluoroethylene has excellent chemical stability, corrosion resistance, sealing, high lubricity and non-stickiness, electrical insulation and good anti-aging resistance; liquid polyvinyl chloride paste resin has good flow and lubricity; polyurethane sealant or polyurethane sealant has good sealing.

[0042] The sealing composition of the present invention has better chemical stability, ductility and corrosion resistance than the current single polyurethane sealing paste or polyurethane sealing paste. Experiments have shown that the sealing composition can achieve the technical effect of having complete sealing performance while extending its service life by 2 times.

[0043] The steel material of the pipe 401 of the high-pressure water supply mechanism of the present invention preferably has a pipe diameter of 180 mm and a casing thickness of 10 mm. The pipe is preferably an elastic material (N-80 steel), with a corresponding elastic modulus / GPa of 200 and a Poisson's ratio of 0.35, having good water-resistant and high-pressure resistance, and ensuring a certain elastic function, and being able to resist water pressure stress. Experiments have shown that the compressive strength can be increased by 20% or more, thereby extending the service life of the pipe. The present invention can also use high-quality carbon structural steel on the market, steel grade 20G.

[0044] The quick connector 5 of the present invention comprises a clamping plate 501, the end of the pumping port 21 and the end face of the pump tube 6 are fixedly mounted with the clamping plate 501, and the surface of the clamping plate 501 is provided with a hole groove 502 and an arc-shaped clamping groove 503, and the other end of the pump tube 6 is fixedly mounted with a connecting plate 504, and the end face of the connecting plate 504 is fixedly mounted with a stepped shaft 505. More specifically, the stepped shaft 505 on the surface of the end face connecting plate 504 of the pump tube 6 and the hole groove 502 on the surface of the clamping plate 501 on the end face of the pumping port 21 are plugged, and then the connecting plate 504 is rotated to make the stepped shaft 505 rotate along the arc-shaped clamping groove 503, so that the stepped shaft 505 is clamped in the arc-shaped clamping groove 503, thereby making the pumping port 21 and the pump tube 6 compatible.

[0045] The nozzle of the high-pressure water injection ring 3 and the pumping port 21 are arranged correspondingly to the inner wall of the pump pipe 6. More specifically, the nozzle of the high-pressure water injection ring 3 and the pumping port 21 correspond to the inner wall of the pump pipe 6, so that a water film is formed between the inside of the pump pipe 6 and the slag.

[0046] The major diameter of the stepped shaft 505 is equal to the diameter of the hole groove 502, the minor diameter of the stepped shaft 505 is equal to the width of the arc-shaped slot 503, and the stepped shaft 505 is slidably arranged inside the arc-shaped slot 503. More specifically, the stepped shaft 505 is plugged into the hole groove 502 and the arc-shaped slot 503 to achieve quick connection and disassembly.

[0047] In summary: the trailer 1 can support and place the slag pump truck body 2, and can also drag and move the slag pump truck body 2. When the slag is pumped, the water supply pipe is connected to the end of the high-pressure water supply mechanism 4, and the water is pressurized and introduced into the interior of the high-pressure water injection ring 3 through the high-pressure water supply mechanism 4. The high-pressure water is ejected from the high-pressure water injection ring 3 and continuously injected into the pump port 21 and the inner side of the pump pipe 6. A high-pressure water film is formed between the slag and the inner wall of the pump pipe 6, thereby greatly reducing the friction between the pump pipe 6 and the slag, thereby reducing the resistance to slag transportation. This can effectively increase the pumping distance of the slag pump truck, and thus effectively reduce or even eliminate the blockage of the pump pipe 6 by the slag.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A soil pumping equipment for shield construction, characterized in that: The invention comprises a trailer (1) and a pump pipe (6); a slag pump truck body (2) is mounted on the top surface of the trailer (1); a pumping port (21) is arranged on the surface of the slag pump truck body (2); a high-pressure water injection ring (3) is embedded on the surface of the pumping port (21); a high-pressure water supply mechanism (4) is arranged at the input end of the high-pressure water injection ring (3); and a quick connector (5) is arranged on the end surface of the high-pressure water supply mechanism (4) and the end surface of the pump pipe (6) for connecting the pumping port (21) and the pump pipe (6), and for connecting the pump pipes (6) to each other.

2. The slag pumping equipment for shield construction according to claim 1 is characterized in that: The trailer (1) comprises a support frame (101), the bottom surface of the support frame (101) is provided with a roller (102), the surface of the support frame (101) is fixedly mounted with a threaded casing (103), the internal thread of the threaded casing (103) is plugged with a screw rod (104), the bottom end of the screw rod (104) is provided with a universal wheel (105), and the top surface of the support frame (101) is mounted with a slag pump truck body (2).

3. The soil pumping equipment for shield construction according to claim 1 is characterized in that: The high-pressure water supply mechanism (4) comprises a pipeline (401), the surface of the high-pressure water injection ring (3) is fixedly mounted with the pipeline (401), the surface of the pipeline (401) is provided with a high-pressure water pump (402), and the high-pressure water pump (402) is fixedly mounted on the trailer (1) via a bracket, the end of the pipeline (401) is fixedly mounted with a connection port (403), and a filter screen (404) is fixedly mounted inside the connection port (403).

4. The slag pumping equipment for shield construction according to claim 3 is characterized in that: The sealing material composition for the pipe (401) of the high-pressure water supply mechanism is applied between the sealing end clamping plate (501) and the connecting plate (504) or on the outer side of the connecting end to form a sealing layer, and the sealing material composition comprises the following components in parts by weight: fine asphalt hemp fibers (45-55) with a diameter of 1-2 mm, liquid polytetrafluoroethylene (8-12), liquid polyvinyl chloride paste resin (4-6), polyurethane sealing paste or polyurethane sealing paste (4-6).

5. The slag pumping equipment for shield construction according to claim 4, characterized in that: The pipeline sealing material composition of the pressurized water supply mechanism comprises the following components in parts by weight: 50 fine asphalt hemp fibers with a diameter of 1-2 mm, 10 liquid polytetrafluoroethylene, 5 liquid polyvinyl chloride paste resin, and polyurethane sealing paste or polyurethane sealing paste 5.

6. The soil pumping equipment for shield construction according to claim 1, characterized in that: The quick connector (5) comprises a clamping disc (501), the end of the pumping port (21) and the end surface of the pump tube (6) are fixedly mounted with the clamping disc (501), and a hole groove (502) and an arc-shaped clamping groove (503) are provided on the surface of the clamping disc (501), the other end of the pump tube (6) is fixedly mounted with a connecting disc (504), and the end surface of the connecting disc (504) is fixedly mounted with a stepped shaft (505).

7. The soil pumping equipment for shield construction according to claim 1, characterized in that: The nozzle of the high-pressure water injection ring (3) and the pumping port (21) are arranged correspondingly to the inner wall of the pump pipe (6).

8. The soil pumping equipment for shield construction according to claim 4, characterized in that: The major diameter of the stepped shaft (505) is equal to the diameter of the hole groove (502), the minor diameter of the stepped shaft (505) is equal to the width of the arc-shaped slot (503), and the stepped shaft (505) and the interior of the arc-shaped slot (503) are slidably arranged.

9. The soil pumping equipment for shield construction according to claim 1, characterized in that: The pipe (401) of the high-pressure water supply mechanism is made of N-80 steel with a diameter of 180 mm and a casing thickness of 10 mm; the pipe is made of elastic material, with a corresponding elastic modulus / GPa of 200 and a Poisson's ratio of 0.35.

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