Sludge suction and discharge device of underwater ditcher

Abstract

The utility model provides a mud suction and discharge device of an underwater ditcher, which comprises a mud suction port, a slim pipe mud conveying pipe and a high-pressure water flow pipe, the mud suction port is arranged below the high-pressure water flow pipe, and the slim pipe mud conveying pipe is vertically arranged between the mud suction port and the high-pressure water flow pipe; the high-pressure water flow pipe comprises a thick water inlet pipe, a conical water pipe, a thin water passing pipe and a conical sludge discharging opening which are sequentially connected, the interiors of the thick water inlet pipe, the conical water pipe, the thin water passing pipe and the conical sludge discharging opening are communicated, the left end of the thick water inlet pipe is a water inlet, the right end of the conical sludge discharging opening is a water outlet, and a mixing chamber is formed in the thin water passing pipe; the upper end of the slim pipe sludge conveying pipe is communicated with the slim water through pipe, and the lower end is communicated with the sludge suction port. According to the utility model, suspended soil can be absorbed while jet seabed sludge is scoured by the jet-type jetting arm, so that excessive consumption of energy and remarkable reduction of income caused by reduction of ditching efficiency or influence on cable burying depth due to re-burying of the soil are prevented; and meanwhile, the additional effect of assisting in burying the rear cable is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a suction and discharge mud device technical field, especially to a kind of underwater ditcher suction and discharge mud device. BACKGROUND

[0002] In the working process of the jet type underwater ditcher, whether it is the traditional V-shaped ditching or the groove type ditching, the jet type water jet is accompanied by muddy silt raised by high-speed water flow while ensuring efficient ditching efficiency;In the first aspect, the operation condition of the muddy silt of the seabed road condition which has been too complex will greatly reduce the obstacle avoidance ability of the ditcher;Secondly, the burying speed of the silt is extremely fast under high water pressure, so the actual depth of the ditch is much smaller than the expected depth when the ditcher is released. Therefore, how to ensure the ditching depth to meet the performance of the jet arm without producing obstacle avoidance blind area becomes an important indicator for measuring the underwater ditcher.

[0003] At present, only the double-chain type ditcher can meet the requirements of ditching and burying after releasing cable, but the heavy chain and the ditching efficiency far inferior to the jet type jet arm make it impossible to become the mainstream choice of jet arm;And the use of jet type jet arm often leads to the above-mentioned obstacle avoidance blind area and early burying of silt before releasing cable and many other problems;Therefore, the introduction of suction and discharge mud device is important and necessary.At present, the suction and discharge mud equipment used by the academic circle to assist the jet arm is still very rare, only part of them can achieve the purpose of reducing the silt in the ditch by changing the angle of the nozzle, which cannot completely solve the disadvantages of early burying of silt, although the suction and discharge mud system has certain application in agriculture, but it lacks practical and effective combination.

[0004] Therefore, the utility model aims at using venturi effect to complete this combination to solve the additional influence of single or double body type jet arm ditching. UTILITY MODEL CONTENT

[0005] According to the above technical problems, a suction and discharge mud device for underwater ditcher is provided.The technical means adopted by the utility model is as follows:

[0006] A suction and discharge mud device for underwater ditcher, comprising: a suction port, a fine tube mud conveying pipe and a high-pressure water flow pipe, the suction port is arranged below, the high-pressure water flow pipe is transversely arranged above, and the fine tube mud conveying pipe is vertically connected between the suction port and the high-pressure water flow pipe;

[0007] The high-pressure water flow pipe comprises a coarse water inlet pipe, a conical water pipe, a fine water pipe and a conical mud discharge port connected in order from left to right, the inside of the coarse water inlet pipe, the conical water pipe, the fine water pipe and the conical mud discharge port is communicated, the left end of the coarse water inlet pipe is the water inlet, the right end of the conical mud discharge port is the water outlet, and the inside of the fine water pipe is the mixing chamber;The upper end of the fine tube mud conveying pipe is communicated with the fine water pipe, and the lower end is communicated with the suction port.

[0008] Further, the coarse water inlet pipe, the conical water pipe, the thin water pipe and the conical sludge discharge port are sequentially welded and connected, and the thin pipe sludge conveying pipe is welded and connected with the thin water pipe and the sludge suction port.

[0009] Further, the coarse water inlet pipe and the thin water pipe are both cylindrical, and the conical water pipe and the conical sludge discharge port are both conical.

[0010] Further, the diameter of the coarse water inlet pipe is larger than that of the thin water pipe, the right end of the coarse water inlet pipe is connected with the large-diameter end of the left end of the conical water pipe, the small-diameter end of the right end of the conical water pipe is connected with the left end of the conical water pipe, and the right end of the conical water pipe is connected with the small-diameter end of the left end of the conical sludge discharge port.

[0011] Further, the thin pipe sludge conveying pipe is cylindrical, and the diameter of the thin pipe sludge conveying pipe is smaller than that of the thin water pipe.

[0012] Further, the thin pipe sludge conveying pipe is vertically arranged with the thin water pipe.

[0013] Further, the sludge suction port is funnel-shaped with an opening downward, and the small-diameter end of the upper end of the sludge suction port is connected with the thin pipe sludge conveying pipe.

[0014] Compared with the prior art, the underwater trencher sludge suction and discharge device has the following advantages:

[0015] The underwater trencher sludge suction and discharge device provided by the utility model adopts a Venturi tube type structure, can suck the suspended soil while the jet type jetting arm washes the jet flow seabed silt, prevents the trenching efficiency from being reduced or the buried cable depth from being affected due to the reburied soil, causes the excessive consumption of energy and the significant reduction of benefits, and simultaneously has the additional effect of assisting the rear cable reburial.

[0016] Based on the above reasons, the utility model can be widely popularized in the field of sludge suction and discharge. DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without the creative labor.

[0018] Figure 1 It is the reference drawing of the sectional view of the utility model.

[0019] Figure 2 It is the sectional view along the line D-D, and the upper part of the utility model is shown. Figure 1

[0020] ​Figure 3 is a sectional view along line A-A in figure Figure 1 , which shows the side structure of the present application.

[0021] Figure 4 is a sectional view along line A-A in figure Figure 1 .

[0022] Figure 5 is a sectional view along line B-B in figure Figure 1 .

[0023] Figure 6 is an animation simulation demonstration diagram of the present application for opening the mud suction and discharge function after the high-pressure water flow is introduced into the mud suction and discharge device.

[0024] Figure 7 is a structural schematic diagram of the asymmetric Venturi fertilizer applicator.

[0025] In the figure: 1, mud suction port; 2, fine pipe mud conveying pipe; 31, coarse water inlet pipe; 32, conical water pipe; 33, fine water pipe; 34, conical mud discharge port. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Venturi effect refers to the phenomenon that when fluid passes through a gradually narrowing channel, the flow rate will increase, and the fluid pressure will decrease. It shows that in restricted flow, when fluid passes through a narrowed flow section, the flow rate is inversely proportional to the area of the flow section; that is, the narrower the channel, the faster the fluid flow rate.

[0028] At present, a small amount of applications of Venturi effect in the field of agriculture are: asymmetric Venturi fertilizer applicator, which is an agricultural irrigation equipment designed based on Venturi principle, mainly composed of six parts of water inlet straight pipe section, contraction section, throat, diffusion section, water outlet straight pipe section and fertilizer suction pipe. Main structural parameters include inlet diameter D1, outlet diameter D2, fertilizer suction pipe diameter D3, throat diameter d, contraction angle , diffusion angle , etc. (as shown in Figure 7 ).

[0029] The asymmetric Venturi fertilizer applicator is structurally optimized and conceptually recombined, is creatively transformed from a jet type fertilizer applicator into a high-pressure water flow type mud suction based on a Venturi effect, and can play an important auxiliary role for seabed marine equipment.

[0030] The utility model provides a kind of under water ditcher suction and discharge device, for a kind of jet flow type ditcher burying cable anti-back burying suction and discharge device.

[0031] As Figure 1 As shown in the utility model, the suction and discharge device is designed with a Venturi tube structure. From bottom to top, it is composed of funnel-like suction port 1, thin tube mud conveying pipe 2 and upper high-pressure water flow pipe. Thin tube mud conveying pipe 2 is vertically arranged between suction port 1 and high-pressure water flow pipe. Upper high-pressure water flow pipe is composed of four parts connected in order from left to right, namely thick water inlet pipe 31, conical water pipe 32, middle thin water pipe 33 and conical mud outlet 34. The interiors of thick water inlet pipe 31, conical water pipe 32, thin water pipe 33 and conical mud outlet 34 are connected. The left end of thick water inlet pipe 31 is water inlet, the right end of conical mud outlet 34 is water outlet, and the interior of middle thin water pipe 33 is mixing chamber. The upper end of thin tube mud conveying pipe 2 is connected with thin water pipe 33, and the lower end is connected with suction port 1. The central axes of thick water inlet pipe 31, conical water pipe 32, thin water pipe 33 and conical mud outlet 34 are coaxial, and the central axes of suction port 1 and thin tube mud conveying pipe 2 are coaxial.

[0032] Each part is connected through fine welding process. Thick water inlet pipe 31, conical water pipe 32, thin water pipe 33 and conical mud outlet 34 are welded in order, and thin tube mud conveying pipe 2 is welded with thin water pipe 33 and suction port 1.

[0033] Thick water inlet pipe 31 and thin water pipe 33 are both cylindrical, and conical water pipe 32 and conical mud outlet 34 are both conical. The diameter of thick water inlet pipe 31 is larger than that of thin water pipe 33. The right end of thick water inlet pipe 31 is connected with the large-diameter end of the left end of conical water pipe 32. The small-diameter end of the right end of conical water pipe 32 is connected with the left end of conical water pipe 32. The right end of conical water pipe 32 is connected with the small-diameter end of the left end of conical mud outlet 34. The diameter of the large-diameter end of the right end of conical mud outlet 34 can be smaller than that of thick water inlet pipe 31.

[0034] Thin tube mud conveying pipe 2 is cylindrical, and its diameter is smaller than that of thin water pipe 33.

[0035] Thin tube mud conveying pipe 2 is vertically arranged with thin water pipe 33, that is, the central axis of thin tube mud conveying pipe 2 is perpendicular to the central axis of thin water pipe 33.

[0036] Suction port 1 is funnel-shaped, with the opening facing downward. The small-diameter end of the upper end of suction port 1 is connected with thin tube mud conveying pipe 2.

[0037] In this embodiment, one possible dimension of the sludge suction and discharge device is as follows: the total length of the high-pressure water pipe is 1200mm, the length of the coarse inlet pipe 31 is 300mm, the length of the conical water pipe 32 is 298.58mm, and the length of the thin water pipe 33 is 150mm. The taper of the conical water pipe 32 is 15°. The diameter of the coarse inlet pipe 31 is 300mm, and the diameter of the large diameter end of the conical sludge discharge port 34 is 240mm. The length of the sludge suction port 1 is 200mm, and the diameter of the large diameter end at the lower end is 600mm. The length of the thin sludge conveying pipe 2 is 930mm. This sludge suction and discharge device of this utility model includes, but is not limited to, this set of dimensions.

[0038] like Figure 6 As shown, when the sludge suction and discharge device is working, a high-pressure water pump draws water from the left end coarse inlet pipe 31 in a horizontal direction ( Figure 1 Water is pumped into the right end from the middle (BB direction), flowing through... Figure 4 When the main conical water pipe 32 reaches the middle narrow water pipe 33, the rapid increase in the high-pressure water flow velocity creates a relative vacuum in the middle narrow water pipe 33, resulting in a relative air pressure difference with the external environment. Sediment flows vertically from the lower funnel-shaped suction port 1 area. Figure 1 (in the AA direction) it was quickly pressed upwards. Figure 3 The mud and sand are pressed into the main body's thin mud-carrying pipe 2. Figure 4 In the narrow water pipe 33 in the middle, it mixes with the high-speed water flow to form high-speed mud, which is finally discharged horizontally at high speed from the right cone-shaped mud discharge port 34 area, while also assisting in the backfilling of the cables behind.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A suction and discharge device for a trencher, characterized in that, The utility model relates to a dredging device, including: a suction port (1), a thin pipe conveying pipe (2) and a high-pressure water flow pipe, the suction port (1) is arranged below, the high-pressure water flow pipe is arranged laterally above, the thin pipe conveying pipe (2) is vertically connected between the suction port (1) and the high-pressure water flow pipe; The high-pressure water flow pipe includes coarse water inlet pipe (31), taper water pipe (32), thin water pipe (33) and taper dredging port (34) sequentially connected from left to right, the inside of coarse water inlet pipe (31), taper water pipe (32), thin water pipe (33) and taper dredging port (34) is communicated, the left end of coarse water inlet pipe (31) is water inlet, the right end of taper dredging port (34) is water outlet, the inside of thin water pipe (33) is mixing chamber;The upper end of thin pipe conveying pipe (2) is communicated with thin water pipe (33), and the lower end is communicated with suction port (1).

2. An undercutter suction slurry device according to claim 1, characterized in that Coarse water inlet pipe (31), taper water pipe (32), thin water pipe (33) and taper dredging port (34) are sequentially welded, and the thin pipe conveying pipe (2) is welded with thin water pipe (33) and suction port (1).

3. The ditcher suction slurry device of claim 1, wherein, Coarse water inlet pipe (31) and thin water pipe (33) are cylindrical, and taper water pipe (32) and taper dredging port (34) are conical.

4. An undercutter suction slurry device according to claim 3, characterized in that The diameter of coarse water inlet pipe (31) is greater than the diameter of thin water pipe (33), the right end of coarse water inlet pipe (31) is connected with the large diameter end of the left end of taper water pipe (32), the small diameter end of the right end of taper water pipe (32) is connected with the left end of taper water pipe (32), and the right end of taper water pipe (32) is connected with the small diameter end of the left end of taper dredging port (34).

5. The ditcher suction slurry device of claim 1, wherein, The thin pipe conveying pipe (2) is cylindrical, and the diameter of the thin pipe conveying pipe (2) is less than the diameter of the thin water pipe (33).

6. The ditcher suction slurry device of claim 1, wherein, The thin pipe conveying pipe (2) is vertically arranged with the thin water pipe (33).

7. The ditcher suction slurry device of claim 1, wherein, The suction port (1) is funnel-shaped, and the opening faces downward;The small diameter end of the upper end of the suction port (1) is connected with the thin pipe conveying pipe (2).

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