Self-adaptive sludge feeding device

Abstract

The invention relates to a self-adaptive sludge feeding device which is a hollow cavity defined by a top plate, side plates and a rear plate, a sludge inlet is formed in the front end of the sludge feeding device, a sludge outlet communicated with a suction port of a desilting pump is formed in the rear plate, and the height of the sludge inlet can be automatically adjusted according to the elevation of the sludge surface needing to be removed. According to the desilting device, the concentration of mud pumped by the desilting pump can be stabilized within a high concentration range all the time, the desilting efficiency is improved, the desilting cost is reduced, the whole desilting operation process is cleaner and more thorough, and the desilting effect is greatly improved.

Description

Technical Field

[0001] The present invention relates to a mud feeding device for dredging and desilting equipment, and in particular to a mud feeding device capable of automatically adjusting the height of a mud inlet in real time. Background Art

[0002] As we all know, pneumatic dredging pumps are widely used dredging equipment in underwater environmental dredging projects. They use compressed air as a power source to press out the mud that enters the pump body under the action of water level pressure difference. They have the advantages of simple structure, reliable operation, no disturbance of the clay layer to cause secondary water pollution during dredging, and high sludge concentration. They are particularly suitable for environmental dredging of rivers, lakes, reservoirs and other water bodies that cannot damage the water quality. Pneumatic dredging pumps use water pressure to press the bottom sludge into the dredging pump through the sludge inlet. At present, the sludge inlet of pneumatic dredging pumps is a channel with fixed structure and size. In actual dredging projects, the mud surface of the underwater mud is not flat and uniform, but is affected by the underwater terrain and water flow, with ups and downs and bumps; this determines that the actual mud elevation that needs to be removed is not a fixed value, but a value that changes dynamically in real time like ByteDance; since the current pneumatic dredging pump mud inlet height is a fixed size, dredging operations can only be carried out at a relatively fixed dredging elevation; when facing the ups and downs of mud, the mud inlet in the mud depression at the bottom of the water will suck in a large amount of water, causing The pumped mud concentration is low, which not only reduces the actual dredging efficiency, but also increases the volume of mud solidification treatment at the back end, increases the overall dredging cost, and prolongs the dredging period; at the sludge protrusions on the bottom of the water, the sludge will accumulate and collapse at the mud inlet, causing the sludge to spread on the bottom of the water. The sludge diffusion not only causes secondary pollution of the water body, but also spreads to the areas where dredging operations have been carried out, causing sludge to be deposited again in the dredged areas, resulting in incomplete dredging operations, affecting the dredging effect, and affecting the project acceptance. For this reason, it is necessary to propose a mud inlet device that can adapt to the actual dredging conditions of the bottom of the water and can automatically adjust the height of the mud inlet in real time with the ups and downs of the mud surface on the bottom of the water. Summary of the invention

[0003] The purpose of the present invention is to provide an adaptive mud inlet device to solve the above problems. The adaptive mud inlet device has a simple structure and is easy to manufacture. It can automatically adjust the height of the mud inlet in real time according to the actual mud elevation at the bottom of the water.

[0004] The objective of the present invention is achieved through the following technical solutions: an adaptive mud feeding device, which is a hollow cavity surrounded by a top plate, a side plate and a rear plate, a mud inlet is provided at the front end of the mud feeding device, and a mud outlet connected to the suction port of a dredging pump is provided on the rear plate, and is characterized in that the height of the mud inlet can be automatically adjusted according to the elevation of the mud surface that needs to be removed.

[0005] Furthermore, the self-adaptive mud feeding device is characterized in that the mud feeding port is surrounded by a side plate and a floating baffle at the front end of the mud feeding device, the floating baffle can move freely up and down, and the gravity of the floating baffle is equal to the buoyancy it receives at the interface of the bottom mud of the water body. In actual dredging and desilting operations, under the action of its own gravity and the buoyancy it receives, the lower edge of the floating baffle can be automatically adjusted to a position just below the mud surface.

[0006] Furthermore, the adaptive mud feeding device is characterized in that: the density of the baffle body component at room temperature is 0.9g / cm 3 -1.0g / cm 3 The density of the bottom part of the baffle shall not be less than 1.04g / cm 3 The overall density of the floating baffle is greater than the density of water and is not greater than 1.2g / cm 3 ; The height of the bottom part of the baffle shall not exceed 10 cm.

[0007] Furthermore, the self-adaptive mud feeding device is characterized in that a limiting component is also provided at the front end of the mud feeding device, and the floating baffle can only move up and down under the limiting action of the limiting component.

[0008] Furthermore, the adaptive mud inlet device is characterized in that the mud inlet is surrounded by a top plate and side plates, the top plate includes a top plate main body component and a top plate bottom end component, the top plate is attached to the inner wall surrounded by the side plates and the rear plate and can move freely up and down along the inner wall, and the gravity of the top plate is equal to the buoyancy it receives at the bottom mud interface of the water body.

[0009] Furthermore, the self-adaptive mud feeding device is characterized in that the bottom end part of the top plate is a raised part located at the lower edge of the top plate body part, and the height of the bottom end part of the top plate is not more than 10 centimeters.

[0010] Furthermore, the adaptive mud feeding device is characterized in that the horizontal cross-sectional shape of the top plate bottom end component is consistent with the horizontal cross-sectional shape of the top plate body component, and the height of the top plate bottom end component is not greater than 5 cm.

[0011] Furthermore, the self-adaptive mud feeding device is characterized in that: the density of the top plate body component at room temperature is 0.9g / cm 3 -1.0g / cm 3 The density of the top plate bottom part is not less than 1.04g / cm 3 The overall density of the top plate is greater than the density of water and is not greater than 1.2g / cm 3 .

[0012] The adaptive mud feeding device of the present invention has an overall density of the floating baffle and the top plate that is slightly greater than the density of water. Therefore, under the action of its own gravity and the buoyancy of the water body and the silt, the lower edge of the floating baffle or the top plate can just fall to a position slightly lower than the interface between the water body and the silt. Therefore, in actual dredging and silting operations, the adaptive mud feeding device can automatically adjust the height of the mud inlet in real time according to the mud surface elevation of the underwater silt. No matter how ups and downs and uneven the mud surface of the underwater silt is, the upper edge of the mud inlet can always fall to a position slightly lower than the interface between the silt and the water body. By controlling the forward speed of the adaptive mud feeding device, the mud concentration pumped by the silt removal pump can always be stabilized within a higher concentration range. This not only avoids the phenomenon of too low mud concentration due to the excessive height of the mud inlet at the silt depression, but also avoids the phenomenon of silt accumulation and diffusion caused by insufficient mud inlet height at the silt protrusion. It not only improves the dredging efficiency and reduces the dredging cost, but also makes the entire dredging operation process cleaner and more thorough, greatly improving the dredging effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural stereogram of embodiment 1 of the present invention.

[0014] Figure 2 It is a front view of embodiment 1 of the present invention.

[0015] Figure 3 It is a top view of embodiment 1 of the present invention.

[0016] Figure 4 It is a right view of embodiment 1 of the present invention.

[0017] Figure 5 The present invention Figure 2 AA section view.

[0018] Figure 6 It is a structural stereogram of embodiment 2 of the present invention.

[0019] Figure 7 It is a front view of embodiment 2 of the present invention.

[0020] Figure 8 It is a top view of embodiment 2 of the present invention.

[0021] Fig. 9 It is a right view of embodiment 2 of the present invention.

[0022] Fig.10 The present invention Figure 7 BB section view.

[0023] Fig.11 It is a structural stereogram of embodiment 3 of the present invention.

[0024] Fig.12It is a front view of embodiment 3 of the present invention.

[0025] Fig.13 The present invention Fig.12 CC section view.

[0026] Fig.14 It is a structural stereogram of embodiment 4 of the present invention.

[0027] Fig.15 It is a front view of embodiment 4 of the present invention.

[0028] Fig.16 It is a top view of embodiment 4 of the present invention.

[0029] Fig.17 It is a structural stereogram of Example 6 of the present invention.

[0030] Fig.18 It is a structural stereogram of the top plate 1 of Example 6 of the present invention. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] Example 1, see attached Figure 1-5 The adaptive mud feeding device is a hollow cavity surrounded by a top plate 1, two side plates 2, a rear plate 3 and a bottom plate 8; a limiting member 7 is also provided at the front end of the mud feeding device, and the limiting member 7 is a clamping groove with two openings opposite to each other, and the inner surface of the clamping groove opposite to the opening is arc-shaped, and an inner surface of the clamping groove adjacent to the opening is in the same plane as the front end surface of the top plate 1 and the side plate 2; the floating baffle 6 is clamped in the groove of the limiting member 7 and can move up and down freely, and the side surface of the floating baffle 6 is in line contact with the arc-shaped inner surface of the limiting member 7, which can reduce the floating The contact area between the baffle 6 and the limiting member 7 is reduced, thereby reducing the resistance of the floating baffle 6 to the up and down movement; the space enclosed by the floating baffle 6 and the side plate 2 forms a mud inlet 4, and the rear plate 3 is provided with a mud outlet 5 connected to the suction port of the dredging pump; the floating baffle 6 includes a baffle body component 6.1 and a baffle bottom end component 6.2, the top of the baffle body component 6.1 is an arc surface, and the bottom of the baffle bottom end component 6.2 is an arc surface, which can reduce the movement resistance of the water body to the floating baffle 6; the room temperature density of the baffle body component 6.1 is 1.0g / cm 3 The density of the bottom part 6.2 of the baffle at room temperature is 1.06g / cm 3 , the height of the baffle bottom part 6.2 is 5 cm.

[0033] When performing dredging operations, the adaptive mud feeding device is lowered into the bottom mud. The density of the bottom mud at the mud surface is the density of water. The mud density gradually increases from the mud surface to the bottom. Since the overall density of the floating baffle 6 is greater than the density of water, the floating baffle 6 will slide down to the mud surface under its own gravity. When the gravity of the floating baffle 6 itself begins to be equal to the buoyancy it receives, the floating baffle 6 automatically stays at this position slightly lower than the bottom mud surface. For a certain pneumatic dredging pump, its dredging displacement is a fixed value, and the floating baffle 6 can automatically adapt to the changes in the ups and downs of the mud surface and always be fixed at a relative position slightly lower than the mud surface. Therefore, by controlling the forward movement speed of the adaptive mud feeding device, it is possible to ensure that all the sludge to be removed is sucked into the dredging pump body, which will not cause the accumulation and diffusion of sludge, and can also keep the mud concentration pumped by the dredging pump always stable within a higher concentration range, thereby improving the dredging efficiency and the dredging effect.

[0034] Example 2, see attached Figure 6-10 The adaptive mud inlet device is a hollow cavity surrounded by a top plate 1, two side plates 2, a rear plate 3 and a bottom plate 8, wherein the top plate 1 and the side plates 2 enclose a space to form a mud inlet 4, and the rear plate 3 is provided with a mud outlet 5 connected to the suction port of the dredging pump; the top plate 1 includes a top plate body component 1.1 and a top plate bottom end component 1.2, and the room temperature density of the top plate body component 1.1 is 1.0g / cm 3 The top plate bottom part 1.2 is composed of four protrusions extending downward from the lower edges of the four corners of the top plate body part 1.1. The height of the top plate bottom part 1.2 is 10 cm and the density is 1.40 g / cm 3 The top plate 1 is attached to the inner wall formed by the side plates 2 and the rear plate 3 and can move freely up and down along the inner wall.

[0035] When performing dredging operations, the adaptive mud feeding device is lowered into the bottom mud. The density of the bottom mud at the mud surface is the density of water. The mud density gradually increases from the mud surface to the bottom. Since the overall density of the top plate 1 is greater than the density of water, the top plate 1 will slide down to the mud surface under its own gravity. When the gravity of the top plate 1 itself begins to be equal to the buoyancy it receives, the top plate 1 automatically stays at this position slightly lower than the bottom mud surface. For a specific pneumatic dredging pump, its dredging displacement is a fixed value, and the top plate 1 can automatically adapt to the changes in the ups and downs of the mud surface and always be fixed at a relative position slightly lower than the mud surface. Therefore, by controlling the forward speed of the adaptive mud feeding device, it can ensure that all the sludge to be removed is sucked into the dredging pump body, which will not cause the accumulation and diffusion of sludge, and can also keep the mud concentration pumped by the dredging pump always stable within a higher concentration range, thereby improving the dredging efficiency and the dredging effect.

[0036] Example 3, see attached Figure 11-13The adaptive mud inlet device is a hollow cavity surrounded by a top plate 1, two side plates 2, a rear plate 3 and a bottom plate 8, wherein the top plate 1 and the side plates 2 enclose a space to form a mud inlet 4, and the rear plate 3 is provided with a mud outlet 5 connected to the suction port of the dredging pump; the top plate 1 includes a top plate body part 1.1 and a top plate bottom end part 1.2, and the room temperature density of the top plate body part 1.1 is 0.90 g / cm 3 , height 5cm; the horizontal cross-sectional shape of the top plate bottom part 1.2 is consistent with the horizontal cross-sectional shape of the top plate body part 1.1, the height of the top plate bottom part 1.2 is 5cm, and the density is 1.20g / cm 3 The overall density of the top plate 1 is 1.05 g / cm 3 The top plate 1 is attached to the inner wall surrounded by the side plates 2 and the rear plate 3 and can move freely up and down along the inner wall. The specific working process of the adaptive mud feeding device in Example 3 during dredging operations can be found in Example 2. Embodiment 4, adaptive mud feeding device, see attached Figure 14-16 The limiting member 7 is a long hole opened at the front end of the top plate 1, and the two ends of the long hole extend to the inner surface of the left and right side plates 2; the room temperature density of the baffle body part 6.1 is 0.94g / cm 3 , height 50cm, density of baffle bottom part 6.2 at room temperature is 1.6g / cm 3 The height of the bottom part 6.2 of the baffle is 10 cm, and the overall density of the floating baffle 6 is 1.05 g / cm 3 The rest of the structure and desilting process are the same as those in Example 1.

[0037] Embodiment 5, adaptive mud feeding device, the specific structure is as shown in Embodiment 1, and the difference from Embodiment 1 is that the room temperature density of the baffle body part 6.1 is 0.90g / cm 3 , height is 59cm, the density of the bottom part of the baffle 6.2 at room temperature is 9.0g / cm 3 The height of the bottom part 6.2 of the baffle is 1 cm, and the overall density of the floating baffle 6 is 1.035 g / cm 3 The rest of the structure and desilting process are the same as those in Example 1.

[0038] Embodiment 6, adaptive mud feeding device, see attached Figure 17-18 The top plate bottom part 1.2 is a U-shaped protrusion extending downward along the lower front edge and both side edges of the top plate body part 1.1. The height of the top plate bottom part 1.2 is 8 cm and the density is 1.30 g / cm 3 The rest of the structure and desilting process are the same as those in Example 2.

[0039] Although the present invention has been described in detail using specific embodiments, it will be apparent to those skilled in the art that various changes can be made without departing from the spirit and scope of the present invention.

Claims

1. An adaptive mud feeding device, the mud feeding device is a hollow cavity surrounded by a top plate (1), a side plate (2) and a rear plate (3), a mud inlet (4) is provided at the front end of the mud feeding device, and a mud outlet (5) connected to a suction port of a dredging pump is provided on the rear plate (3), wherein: The height of the mud inlet (4) can be automatically adjusted according to the elevation of the mud surface that needs to be removed.

2. The adaptive mud feeding device according to claim 1, characterized in that: The mud inlet (4) is a space enclosed by the side plates (2) and a floating baffle (6) located at the front end of the mud inlet device. The floating baffle (6) comprises a baffle body component (6.1) and a baffle bottom component (6.2). The floating baffle (6) can move freely up and down. The gravity of the floating baffle (6) is equal to the buoyancy it receives at the bottom mud interface of the water body.

3. The adaptive mud feeding device according to claim 2, characterized in that: The density of the baffle body (6.1) at room temperature is 0.9 g / cm 3 -1.0g / cm 3 The density of the bottom part of the baffle (6.2) is not less than 1.04 g / cm 3 The overall density of the floating baffle (6) is greater than the density of water and is not greater than 1.2 g / cm 3 .

4. The adaptive mud feeding device according to claim 2, characterized in that: The height of the baffle bottom part (6.2) is no more than 10 cm.

5. The adaptive mud feeding device according to claim 2, characterized in that: A limiting component (7) is also provided at the front end of the mud feeding device, and the floating baffle (6) can only move up and down under the limiting action of the limiting component (7).

6. The adaptive mud feeding device according to claim 1, characterized in that: The mud inlet (4) is surrounded by a top plate (1) and side plates (2), the top plate (1) comprising a top plate body component (1.1) and a top plate bottom end component (1.2), the top plate (1) is attached to an inner wall surrounded by the side plates (2) and the rear plate (3) and can freely move up and down along the inner wall, and the gravity of the top plate (1) is equal to the buoyancy it experiences at the bottom mud interface of the water body.

7. The adaptive mud feeding device according to claim 6, characterized in that: The top plate bottom end component (1.2) is a raised portion located at the lower edge of the top plate body component (1.1), and the height of the top plate bottom end component (1.2) is no more than 10 centimeters.

8. The adaptive mud feeding device according to claim 6, characterized in that: The horizontal cross-sectional shape of the top plate bottom end part (1.2) is consistent with the horizontal cross-sectional shape of the top plate body part (1.1), and the height of the top plate bottom end part (1.2) is no more than 5 centimeters.

9. The adaptive mud feeding device according to claim 6, characterized in that: The density of the top plate body part (1.1) at room temperature is 0.9 g / cm 3 -1.0g / cm 3 The density of the top plate bottom part (1.2) is not less than 1.04g / cm 3 The overall density of the top plate (1) is greater than the density of water and is not greater than 1.2 g / cm 3 .

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