A vibrator device with siphon function and construction process

Abstract

The present application relates to a kind of with siphon function's vibrator equipment and construction technology, belong to foundation treatment engineering field.The equipment of the present application includes vibrator, jet siphon component and cooling impact waterway mechanism.High-pressure cooling water is sprayed from the jetting port of vibrator head after heat exchange by motor water jacket, and cooling and impact are realized.Jet siphon component uses high-pressure water to generate jet flow by variable diameter structure, and forms negative pressure in siphon negative pressure waterway, and mud water generated by construction is pumped to ground.The present application also proposes displacement control equation based on pulsation superposition driving principle, and by adjusting the vibration parameters and water pressure parameters of vibrator, deep and controllable mud water pumping is realized, effectively solve the problem of poor heat dissipation and mud pumping difficulty of traditional vibrator, and improve the quality and efficiency of foundation treatment.

Description

Technical Field

[0001] This invention relates to the field of foundation treatment engineering equipment technology, specifically a vibratory compactor with siphon function and its construction process. Background Technology

[0002] Vibratory compactors are core specialized equipment for foundation reinforcement construction. Their working principle is to use an electric motor to drive an eccentric shaft to generate high-frequency vibration, which, together with high-pressure water flow, impacts the soil layer, causing the soil structure to loosen and liquefy. Then, by filling with fillers such as sand and gravel, a dense pile body is formed, thereby improving the overall bearing capacity of the foundation. Currently, they are widely used in infrastructure projects such as highways, buildings, and water conservancy.

[0003] Currently, conventional vibratory compactors on the market have significant technical defects in actual construction: First, the drive motor of the equipment is under high load and high vibration conditions for a long time, and it is buried deep underground with poor heat dissipation conditions. The traditional simple heat dissipation structure has low heat dissipation efficiency, which can easily lead to motor overheating and burnout, shortening the service life of the equipment. Second, existing vibratory compactors are only equipped with a single impact water channel, which can only complete soil impact and hole enlargement operations. There is no dedicated mud removal structure. Most of the mud and mud-water mixture generated during construction accumulates in the working hole, which can easily cause problems such as hole collapse, small pile diameter, and poor pile forming quality. Third, conventional vibratory compactors do not have the function of deep mud and water extraction. Due to the limitations of equipment structure and drainage method, they cannot efficiently extract mud and water mixtures from depths of 10 meters or more underground. For deep foundation operations, this not only increases construction costs and equipment footprint, but also increases construction procedures, reduces overall construction efficiency, and has poor adaptability.

[0004] Based on this, the present invention is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a vibratory compactor device and construction process that integrates motor cooling, high-pressure impact, and deep siphon sludge discharge into one unit. Through innovative water circuit structure design and the establishment of a discharge control equation based on the principle of pulse superposition drive, deep, efficient and controllable sludge and water pumping can be achieved.

[0006] This invention provides a vibratory compactor device with siphon function and a construction process, the technical solution of which is as follows:

[0007] A vibratory impactor device with a siphon function includes a vibratory impactor, which comprises a vibratory housing, a vibratory impact head, an eccentric shaft installed inside the vibratory housing, and a motor for driving the eccentric shaft to rotate. The vibratory housing contains a motor water jacket for water cooling of the motor. It also includes a jet-type siphon assembly and a cooling impact water channel mechanism. The lower part of the vibratory impact head is provided with a spray nozzle. The inlet end of the cooling impact water channel mechanism is connected to a high-pressure water source. Water flowing within the cooling impact water channel mechanism is heat-exchanged through the motor water jacket and then continues to be transported downwards, ultimately... The jet siphon assembly includes a power siphon plate installed on the outside of the vibratory flushing device, a high-pressure water pump, and a sewage self-priming pump. The power siphon plate includes a positive pressure siphon channel, a negative pressure siphon channel, and a sediment channel. The positive pressure siphon channel and the negative pressure siphon channel are connected by a variable diameter structure. A sediment channel connection port is provided in the area near the variable diameter structure in the negative pressure siphon channel, which connects to the sediment channel. The positive pressure siphon channel is connected to the high-pressure water pump, and the sewage self-priming pump is connected to the negative pressure siphon channel.

[0008] Among them, the high-pressure water source can also be a combination of a high-pressure water pump and a water source (such as tap water).

[0009] In engineering, the phenomenon of using negative pressure to draw liquids is often referred to as siphon, such as jet siphon and water jet siphon. The driving mechanism of the siphon described in this invention is different from gravity siphon. Instead, it is a negative pressure suction siphon effect generated by a high-pressure jet, which can be named dynamic siphon or jet siphon. Its physical essence is to use high-pressure water to accelerate through a small hole to form a high-speed jet, which generates a vortex suction effect in the negative pressure cavity, thereby creating a dynamic siphon pumping capability that does not require a liquid level difference.

[0010] Furthermore, the upper end of the vibrating shell is provided with a cover, and the cover is provided with a cooling water through hole that communicates with the motor water jacket. The cooling water through hole is the water inlet of the cooling impact water channel mechanism. The cooling impact water channel mechanism also includes a cooling water channel located inside the vibrating shell. The upper end of the cooling water channel communicates with the motor water jacket, and the lower end of the cooling water channel communicates with the spray nozzle.

[0011] Furthermore, the variable diameter structure includes a conical hole and a protruding nozzle with a cylindrical inner cavity. The large end of the conical hole is connected to the positive pressure siphon water channel, and the small end of the conical hole is connected to the tail end of the protruding nozzle. The head end of the protruding nozzle is located inside the negative pressure siphon water channel. The inner diameter of the protruding nozzle is smaller than the aperture of the positive pressure siphon water channel, and the inner diameter of the protruding nozzle is smaller than the aperture of the negative pressure siphon water channel.

[0012] Furthermore, the cover is provided with a siphon negative pressure suction hole, and the sewage self-priming pump is connected to the siphon negative pressure water channel through the siphon negative pressure suction hole and the water pipe.

[0013] Furthermore, the cover is provided with a siphon positive pressure water inlet hole, and the siphon positive pressure water channel is connected to the high-pressure water pump through the siphon positive pressure water inlet hole and the water pipe.

[0014] Furthermore, the water flow within the cooling impact water channel mechanism is high-pressure cooling water, which is sprayed out from the nozzle after heat exchange; during the vibratory compaction process, a portion of the soil layer near the vibratory compactor combines with a portion of the high-pressure cooling water after heat exchange to form mud slurry.

[0015] The water flow in the siphon positive pressure channel is high-pressure water. The high-pressure water is throttled and accelerated by the variable diameter structure. In addition, the sewage self-priming pump creates negative pressure in the siphon negative pressure channel, forming a siphon driving force.

[0016] Under the driving force of the siphon, the muddy water enters the siphon negative pressure waterway through the mud and sand channel and is eventually pumped away by the sewage self-priming pump and discharged to the ground.

[0017] Furthermore, in this invention, the pressure of the high-pressure water is 0.8~1.0 MPa. The pressure of the high-pressure cooling water can be adjusted to 0.5~0.6 MPa, ensuring both motor heat dissipation and soil impact-induced hole expansion; the water pressure P flowing into the siphon positive pressure water channel... 正 Adjust to 0.8~1.0 MPa; compared to P 冲 The higher positive pressure setting is to ensure that the high-pressure water has sufficient flow velocity when flowing through the small-diameter variable structure, so that the P in the siphon negative pressure water channel... 负 It can stably maintain a low pressure range of 0.05~0.08MPa (absolute pressure), thereby generating a stable siphon pumping effect in deep holes.

[0018] Furthermore, the inner diameter of the protruding nozzle is 14-16 mm. A stable negative pressure is generated within the siphon negative pressure channel by utilizing the throttling effect.

[0019] On the other hand, in one construction process, the high-pressure cooling water in the cooling impact water channel mechanism is sprayed out to impact the soil layer after completing heat exchange. The water pressure of the high-pressure cooling water also serves as a pressure source for pulsating energy. The pressure difference between the siphon positive pressure water channel and the siphon negative pressure water channel constitutes the foundation siphon driving force. The vibration generated by the vibratory compactor during the vibratory compaction operation acts on the high-pressure cooling water flowing through the cooling impact water channel mechanism. The energy of the two is coupled, forming a periodic pressure pulsation in the siphon negative pressure water channel. This pressure pulsation is superimposed on the foundation siphon driving force in the form of additional pressure. The two together constitute the total driving pressure difference to drive the mud and water to be discharged.

[0020] When the increased construction depth leads to insufficient foundation siphon driving force, the amplitude and / or frequency of the vibratory compactor can be increased to enhance the additional pressure of the pressure pulsation, thereby compensating for the loss of some foundation siphon driving force due to the increased depth and maintaining the stability of deep sludge discharge.

[0021] Specific examples of the control methods mentioned above during construction are as follows:

[0022] During construction, high-pressure water pumps, high-pressure water delivery pumps, sewage self-priming pumps, and vibratory compactors are simultaneously activated, with the high-pressure cooling water pressure P... 冲 The water pressure inside the siphon positive pressure waterway is the siphon positive pressure P. 正 The water pressure inside the siphon negative pressure waterway is the siphon negative pressure P. 负 These water pressures are collected in real time by water pressure sensors, and the amplitude A and frequency f of the vibratory compactor are adjustable and controllable. If the vibratory compactor is electric, it uses a frequency converter for control. The frequency converter, through internal IGBTs and other power devices, converts fixed-frequency AC power into AC power with continuously adjustable frequency and voltage, thereby precisely controlling the motor speed and achieving a wide range of stepless adjustment of the vibration frequency. Changing the motor speed by the frequency converter can directly change the centrifugal force generated by the rotation of the eccentric block, thus achieving amplitude adjustment. If it is a hydraulic vibratory compactor, it uses hydraulic drive control technology. The hydraulic vibratory compactor is powered by a hydraulic motor, and the output flow of hydraulic oil is directly adjusted, thereby changing the speed of the driving hydraulic motor. The change in speed will directly cause changes in the excitation force and amplitude to adapt to complex strata.

[0023] The siphon sludge discharge rate Q is controlled using the unique discharge rate control equation of this invention:

[0024] ;

[0025] In the formula:

[0026] The unit of Q is m 3 / s;

[0027] K is the overall flow coefficient of the equipment, in meters. 3 / (s·Pa 1 / 2 In practical applications, calibration is performed through experiments. The calibration method is as follows:

[0028] Before construction, the overall flow coefficient K of the equipment was calibrated through a clean water test: under vibration-free conditions (A=0, f=0), the water pressure in the siphon positive pressure channel was P. 正 The water pressure inside the siphon negative pressure waterway is the siphon negative pressure P. 负 The measured siphon sludge discharge volume Q is calculated according to the formula.

[0029] To calculate K. For example, in a calculation, K was measured to be 5.2 × 10⁻⁶. -6 m 3 / (s·Pa 1 / 2 ).

[0030] P 正 The unit is Pa; P 负The unit is Pa; P 冲 The unit is Pa; ρ is the density of the mud slurry.

[0031] A is the amplitude of the vibratory compactor, in meters; f is the vibration frequency of the vibratory compactor, in Hz; β is the coupling coefficient, dimensionless, calibrated through test piles.

[0032] When the depth increases, the back pressure increases (P) 正 -P 负 When the vibration parameters A and f are insufficient to drive the slurry, the vibration parameters A and f or the water pressure P of the high-pressure cooling water can be increased. 冲 This can generate significant pulsating additional pressure, thereby maintaining or even increasing displacement.

[0033] Before formal construction, conduct test pile operations on 2-3 piles. Record the parameters under stable conditions: P 正 P 负 P 冲 A, f, and the actual siphon sludge discharge volume Q. Using the known K and sludge water density ρ, β is calculated using the following formula:

[0034] ;

[0035] The average value of multiple sets of valid data is taken as the β value of the formation.

[0036] Under normal geological conditions, the value of β ranges from 3 to 15; under extreme conditions, the value ranges from 1 to 35: for dense hard soil and high-consistency mud, the value is smaller, from 3 to 8; for conventional silt and silty clay, the value is in the middle, from 8 to 12; for saturated soft silt and thin mud, the value is larger, from 12 to 15; only for extremely soft silt and clear water slurry, when the maximum excitation parameter is used, β can approach the upper limit of 35; when β is less than 1, the vibration has a weak effect on improving the mud removal efficiency and has no engineering application value.

[0037] Based on the current depth H, P is indirectly affected. 负 (Negative pressure is affected by the pressure of the liquid column inside the hole). Operators can read various pressure values ​​and vibration parameters in real time and substitute them into the formula to estimate the current siphon sludge discharge volume. When it is necessary to maintain the designed siphon sludge discharge volume while deepening the operation, the required increment of the product Af can be calculated back according to the formula, and then the frequency or amplitude can be adjusted. For example, if the increase in depth leads to (P 正 -P 负 If ΔP decreases, then a pulsation term needs to be added to make it... This achieves stable control. Here, Δ(Af) is the increment of the product of amplitude and frequency, representing the artificially increased vibration intensity to compensate for the loss of deep suction.

[0038] Therefore, the present invention can adjust the vibration frequency and / or amplitude and / or P according to the predicted siphon sludge discharge amount Q. 正 P 负 P冲 Equal water pressure ensures that the actual siphon sludge discharge volume Q remains within the set range.

[0039] This invention guides construction through the aforementioned driving equations, accurately quantifying the enhancing effect of vibration and impact water pressure on deep siphoning, thus solving the problem of blind adjustment using traditional trial-and-error methods. The integrated waterway structure of the equipment, combined with this control method, enables stable sludge removal at depths exceeding 10 meters, significantly improving pile forming quality and reducing construction costs.

[0040] Furthermore, during the construction of the test piles, the actual amount of mud discharged under different depths, different vibration parameters, and different water pressure combinations was recorded to form a vibration-water pressure-discharge correspondence for specific strata, which can be used to guide parameter adjustment during formal construction.

[0041] Compared with the prior art, the beneficial effects of the present invention are:

[0042] 1. This invention utilizes high-pressure cooling water for forced water cooling of the motor. The water within the power siphon plate can also undergo further heat exchange, further improving the heat dissipation effect and thus solving the heat dissipation problem under deep, high-load conditions. The high-pressure cooling water after heat exchange is directly used to impact the soil layer, achieving cascaded energy utilization and a compact structure.

[0043] 2. This invention, through a jet siphon structure and the pulsating additional pressure generated by vibration coupling, can generate a strong negative pressure suction force without the need for an additional mechanical pump to penetrate deep into the hole. This effectively solves the problem of mud removal at depths of more than 10 meters, significantly reduces the thickness of sediment at the bottom of the hole, and improves the bearing capacity of the pile.

[0044] 3. The original displacement control equation of this invention provides a basis for the precise adjustment of construction parameters, realizes quantitative control, and ensures the stability of construction quality.

[0045] 4. This invention integrates three major functions: water cooling, impact, and sludge removal, effectively reducing the number of auxiliary equipment, lowering construction costs and site requirements, and is suitable for various complex geological conditions. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the structure of the vibratory impactor device with siphon function described in this invention;

[0047] Figure 2 for Figure 1 AA view;

[0048] Figure 3 for Figure 2 Enlarged view of a section at point B in the middle;

[0049] Figure 4This is a schematic diagram of the vibratory impactor device with siphon function described in this invention from a downward view;

[0050] Figure 5 for Figure 4 CC view;

[0051] Figure 6 This is a schematic diagram showing the connection between the vibratory impactor and the power siphon plate described in this invention;

[0052] Figure 7 for Figure 6 DD view;

[0053] Figure 8 This is a schematic diagram showing the connection between the cover and the power siphon plate described in this invention;

[0054] Figure 9 for Figure 8 EE view;

[0055] Figure 10 for Figure 9 FF view;

[0056] Figure 11 This is a top view of the cap as described in this invention. Detailed Implementation

[0057] The present invention will be described in detail below with reference to specific embodiments. These embodiments are merely some, not all, implementations of the present invention. All other implementations obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0058] Example 1

[0059] like Figures 1-11 As shown, the vibratory impactor device with siphon function includes a vibratory impactor 10. The vibratory impactor 10 includes a vibratory housing 11, a vibratory impactor head 12, an eccentric shaft 13 installed inside the vibratory housing 11, and a motor 14 for driving the eccentric shaft 13 to rotate. The vibratory housing 11 is provided with a motor water jacket 15 for water cooling the motor 14.

[0060] The vibratory impactor with siphon function also includes a jet siphon assembly and a cooling impact water channel mechanism. The lower part of the vibratory impact head 12 is provided with a spray port 17. The water inlet of the cooling impact water channel mechanism is connected to a high-pressure water source. The water in the cooling impact water channel mechanism is heat-exchanged by the motor water jacket 15 and then continues to be transported downwards, and finally sprayed out from the spray port 17. The jet siphon assembly includes a power siphon plate 20 installed on the outside of the vibratory impactor 10, a high-pressure water pump, and a sewage self-priming pump. The power siphon plate 20 includes a positive pressure siphon water channel 22, a negative pressure siphon water channel 23, and a sediment channel 27. The positive pressure siphon water channel 22 and the negative pressure siphon water channel 23 are connected by a variable diameter structure 25. The area near the variable diameter structure in the negative pressure siphon water channel 23 is provided with a sediment channel connection port 24 that connects to the sediment channel 27. The positive pressure siphon water channel 22 is connected to the high-pressure water pump, and the sewage self-priming pump is connected to the negative pressure siphon water channel 23.

[0061] The water flow in the cooling impact water channel mechanism is high-pressure cooling water, which is sprayed out from the spray nozzle 17 after heat exchange; during the vibratory compaction process, a part of the soil layer near the vibratory compactor 10 combines with a part of the high-pressure cooling water after heat exchange to form mud slurry.

[0062] The water flow in the siphon positive pressure channel 22 is high pressure water. The high pressure water is throttled and accelerated by the variable diameter structure 25. In conjunction with the sewage self-priming pump, negative pressure is generated in the siphon negative pressure channel 23, forming a siphon driving force.

[0063] Under the driving force of the siphon, the muddy water enters the siphon negative pressure waterway 23 through the mud and sand channel 27 and is eventually pumped away by the sewage self-priming pump and discharged to the ground.

[0064] In some other embodiments, for ease of assembly, the upper end of the vibrating shell 11 is provided with a cover 18, and the cover 18 is provided with a cooling water through hole 185 that communicates with the motor water jacket 15. The cooling water through hole 185 is the water inlet of the cooling impact water channel mechanism. The cooling impact water channel mechanism also includes a cooling water channel 16 located inside the vibrating shell 11. The upper end of the cooling water channel 16 communicates with the motor water jacket 15, and the lower end of the cooling water channel 16 communicates with the spray nozzle 17.

[0065] In other embodiments, the variable diameter structure 25 is further refined. The variable diameter structure 25 includes a tapered hole 251 and a protruding nozzle 252 with a cylindrical inner cavity. The large end of the tapered hole 251 communicates with the positive pressure siphon channel 22, and the small end of the tapered hole 251 communicates with the tail end of the protruding nozzle 252. The head end of the protruding nozzle 252 is located inside the negative pressure siphon channel 23. The inner diameter of the protruding nozzle 252 is smaller than the aperture of the positive pressure siphon channel 22, and the inner diameter of the protruding nozzle 252 is smaller than the aperture of the negative pressure siphon channel 23. Furthermore, the inner diameter of the protruding nozzle 252 is 14~16mm.

[0066] In some other embodiments, the cover 18 is provided with a siphon negative pressure water suction hole 118, and the sewage self-priming pump and the siphon negative pressure water channel 23 are connected to the water pipe through the siphon negative pressure water suction hole 118.

[0067] In some other embodiments, the cover 18 is provided with a siphon positive pressure water inlet 181, and the siphon positive pressure water channel 22 is connected to the high-pressure water pump through the siphon positive pressure water inlet 181 and the water pipe.

[0068] In some other embodiments, the pressure of the high-pressure cooling water is 0.5~0.6MPa, and the pressure of the high-pressure water is 0.8~1.0MPa.

[0069] In this invention, the high-pressure cooling water in the cooling impact water channel mechanism is sprayed out to impact the soil layer after completing heat exchange. The water pressure of the high-pressure cooling water also serves as the pressure source of pulsating energy. The pressure difference between the siphon positive pressure water channel and the siphon negative pressure water channel constitutes the basic siphon driving force. The vibration generated by the vibratory impactor during the vibratory impact operation acts on the high-pressure cooling water flowing through the cooling impact water channel mechanism. The energy of the two is coupled, forming a periodic pressure pulsation in the siphon negative pressure water channel. This pressure pulsation is superimposed on the basic siphon driving force in the form of additional pressure. The two together constitute the total driving pressure difference to drive the mud and water to be discharged.

[0070] When the increased construction depth leads to insufficient foundation siphon driving force, the amplitude and / or frequency of the vibratory compactor can be increased to enhance the additional pressure of the pressure pulsation, thereby compensating for the loss of some foundation siphon driving force due to the increased depth and maintaining the stability of deep sludge discharge.

[0071] Furthermore, during the construction of test piles, the actual amount of mud discharged under different depths, vibration parameters, and water pressure combinations is recorded to form a vibration-water pressure-discharge correspondence for specific strata, which can be used to guide parameter adjustment during formal construction.

[0072] In this invention, when high-pressure water flows through the conical orifice 251 and the convex nozzle 252, the flow area decreases sharply, the flow velocity increases, and the pressure decreases. According to Bernoulli's equation, a local negative pressure zone is formed near the outlet of the convex nozzle, thereby drawing in and carrying away the external mud and water through the mud and sand channel connection port 24.

[0073] Because the water column has a certain mass and inertia, vibration will create pressure fluctuations (i.e., water hammer effect, sound wave effect, or forced vibration of fluid) in the water column. When this fluctuation is transmitted to the siphon negative pressure channel 23, it will be superimposed on the static negative pressure formed by the jet, forming an instantaneous and larger driving pressure difference, thereby effectively overcoming the flow resistance under deep high back pressure.

[0074] The construction process steps in this example are as follows:

[0075] 1. Start the high-pressure water pump, high-pressure water delivery pump, sewage self-priming pump, and vibratory compactor, and supply high-pressure cooling water (P) to the vibratory compactor. 冲 The siphon positive pressure P in the siphon positive pressure waterway 正 And form a siphon negative pressure P in the siphon negative pressure waterway. 负 ;

[0076] 2. Adjust the vibration frequency f and amplitude A of the vibratory impactor;

[0077] 3. Real-time data collection of P using sensors 正 P 负 P 冲 Based on the following discharge control equations, the siphon sludge discharge rate Q is predicted and controlled: A, f

[0078] ;

[0079] Where K is the overall flow coefficient of the equipment, ρ is the density of the mud water, and β is the coupling coefficient pre-calibrated by the test pile;

[0080] Adjust the vibration frequency and / or amplitude and / or P based on the predicted siphon sludge discharge volume. 正 P 负 P 冲 Equal water pressure ensures that the actual siphon sludge discharge volume remains within the set range.

[0081] Example 2

[0082] This example demonstrates an engineering application using the vibratory compactor device of this invention, with a device constant K = 5.2 × 10⁻⁶. -6 m 3 / (s·Pa 1 / 2 ), ρ=1151kg / m 3 .

[0083] The test pile depth was 10m, and P was set. 正 =750kPa, P 负 =50kPa, P 冲 =550kPa, A=0.004m, f=45Hz, measured siphon sludge discharge rate Q=0.0045m³ 3 / s. Calculate (P) 正 -P 负 =700000Pa, β≈10.84 is calculated; β is calibrated to be 10.8.

[0084] When construction reached a depth of 15m, due to back pressure P 负When the pressure rises to 75 kPa, the pressure difference drops to 675 kPa. If the original vibration parameters are maintained, the pulsation term = 10.8 × 25100 × 0.004 × 45 ≈ 48794 Pa, the total driving pressure difference = 675000 + 48794 = 723794 Pa, and the predicted siphon sludge discharge rate Q ≈ 0.00442 m³. 3 / s, still close to the design value, achieving deep and stable sludge discharge.

[0085] Comparative Example 1

[0086] Using the same equipment as in Example 2, if the vibration function of the vibratory compactor is turned off (A=0, f=0), the pulsation term is zero. At a depth of 15m and a pressure difference of 675kPa, the theoretical siphon sludge discharge rate is Q=0.00427m³. 3 / s, but due to the thixotropic nature of deep mud and pipeline losses, the actual discharge rate is only 0.002m³ / s. 3 The flow rate was / s, which could not meet the requirements for hole cleaning, and the sediment at the bottom of the hole increased significantly. This proves that the pulsation term is crucial for maintaining the deep-layer discharge rate.

[0087] Comparative Example 2

[0088] Traditional vibratory compactors only have cooling impact channels and lack independent siphon positive / negative pressure channels and variable diameter structures, thus failing to create a stable siphon effect. At a depth of 12m, mud and water pumping relies entirely on mud pumps (or sewage self-priming pumps), which are bulky, inefficient, and have a discharge capacity of less than 0.001m³. 3 / s. The device of this invention can achieve a discharge rate of 0.004m at the same depth. 3 With speeds of 1000 m / s or more, the advantages are significant.

[0089] Furthermore, it should be understood that those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A vibratory impactor device with siphon function, comprising a vibratory impactor, the vibratory impactor including a vibratory housing, a vibratory impact head, an eccentric shaft installed inside the vibratory housing, and a motor for driving the eccentric shaft to rotate, wherein a motor water jacket for water cooling the motor is provided inside the vibratory housing, characterized in that, It also includes a jet-type siphon assembly and a cooling impact water channel mechanism. The lower part of the vibratory head is provided with a spray nozzle. The water inlet of the cooling impact water channel mechanism is connected to a high-pressure water source. The water in the cooling impact water channel mechanism is heat-exchanged by the motor water jacket and then continues to be transported downwards, finally being sprayed out from the spray nozzle. The jet-type siphon assembly includes a power siphon plate installed on the outside of the vibratory head, a high-pressure water pump, and a sewage self-priming pump. The power siphon plate includes a positive pressure siphon water channel, a negative pressure siphon water channel, and a sediment channel. The positive pressure siphon water channel and the negative pressure siphon water channel are connected by a variable diameter structure. A sediment channel connection port is provided in the area near the variable diameter structure in the negative pressure siphon water channel, which connects to the sediment channel. The positive pressure siphon water channel is connected to the high-pressure water pump, and the sewage self-priming pump is connected to the negative pressure siphon water channel.

2. The vibratory beater device with siphon function according to claim 1, characterized in that: The upper end of the vibrating shell is provided with a cover, and the cover is provided with a cooling water through hole that is connected to the motor water jacket. The cooling water through hole is the water inlet of the cooling impact water channel mechanism. The cooling impact water channel mechanism also includes a cooling water channel located inside the vibrating shell. The upper end of the cooling water channel is connected to the motor water jacket, and the lower end of the cooling water channel is connected to the spray nozzle.

3. The vibratory beater device with siphon function according to claim 1, characterized in that: The variable diameter structure includes a conical hole and a protruding nozzle with a cylindrical inner cavity. The large end of the conical hole is connected to the positive pressure siphon water channel, and the small end of the conical hole is connected to the tail end of the protruding nozzle. The head end of the protruding nozzle is located inside the negative pressure siphon water channel. The inner diameter of the protruding nozzle is smaller than the aperture of the positive pressure siphon water channel, and the inner diameter of the protruding nozzle is smaller than the aperture of the negative pressure siphon water channel.

4. A vibratory beater device with siphon function according to claim 1, characterized in that: The cover is provided with a siphon negative pressure water suction hole, and the sewage self-priming pump is connected to the siphon negative pressure water channel through the siphon negative pressure water suction hole and the water pipe.

5. A vibratory beater device with siphon function according to claim 1, characterized in that: The cover is provided with a siphon positive pressure water inlet hole, and the siphon positive pressure water channel is connected to the high-pressure water pump through the siphon positive pressure water inlet hole and the water pipe.

6. A vibratory beater device with siphon function according to claim 1, characterized in that: The water flow in the cooling impact water channel mechanism is high-pressure cooling water, which is sprayed out from the nozzle after heat exchange; during the vibratory compaction process, a part of the soil layer near the vibratory compactor combines with a part of the high-pressure cooling water after heat exchange to form mud slurry. The water flow in the siphon positive pressure channel is high-pressure water. The high-pressure water is throttled and accelerated by the variable diameter structure. In addition, the sewage self-priming pump creates negative pressure in the siphon negative pressure channel, forming a siphon driving force. Under the driving force of the siphon, the muddy water enters the siphon negative pressure waterway through the mud and sand channel and is eventually pumped away by the sewage self-priming pump and discharged to the ground.

7. A vibratory beater device with siphon function according to claim 6, characterized in that: The pressure of the high-pressure cooling water is 0.5~0.6MPa, and the pressure of the high-pressure water is 0.8~1.0MPa.

8. A vibratory beater device with siphon function according to claim 3, characterized in that: The inner diameter of the protruding nozzle is 14~16mm.

9. A construction process, performed using a vibratory compactor with siphon function as described in any one of claims 1 to 8, characterized in that: After completing heat exchange, the high-pressure cooling water in the cooling impact water channel mechanism is sprayed out to impact the soil layer. The water pressure of the high-pressure cooling water also serves as the pressure source of pulsating energy. The pressure difference between the siphon positive pressure water channel and the siphon negative pressure water channel constitutes the basic siphon driving force. The vibration generated by the vibratory impactor during the vibratory impact operation acts on the high-pressure cooling water flowing through the cooling impact water channel mechanism. The energy of the two is coupled, forming a periodic pressure pulsation in the siphon negative pressure water channel. This pressure pulsation is superimposed on the basic siphon driving force in the form of additional pressure. The two together constitute the total driving pressure difference to drive the mud and water to be discharged. When the increased construction depth leads to insufficient foundation siphon driving force, the amplitude and / or frequency of the vibratory compactor can be increased to enhance the additional pressure of the pressure pulsation, thereby compensating for the loss of some foundation siphon driving force due to the increased depth and maintaining the stability of deep sludge discharge.

10. A construction process according to claim 9, characterized in that: During the construction of test piles, the actual amount of mud discharged under different depths, different vibration parameters, and different water pressure combinations is recorded to form a vibration-water pressure-discharge correspondence for specific strata, which can be used to guide parameter adjustment in formal construction.

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