Ultra-lightweight large-capacity rescue pump with self-cooling function

Abstract

The application discloses a kind of ultra-light large-capacity rescue pumps with self-cooling function, it is related to rescue pump technical field, including pump body, the output shaft of the high-efficiency motor of pump body is driven lightweight impeller rotation by upper bearing, the outside of pump body is fixed with filter screen, cable and wiring device are equipped with cable on the outside of pump body, the movable end of cable is from the side wall of pump body, water guide frame is equipped at cable and wiring device place.The application cooperates through water guide frame, slide, limit frame and so on, establishes the branch line channel of big inlet and small outlet, accelerates water flow, strengthens cable and wiring device heat dissipation, temperature rise amplitude reduces, avoids equipment overheating damage;After shutdown, water guide frame inner chamber stores water and keeps cable wet, prevents silt dry and caked, avoids cable insulation layer abrasion or wiring end corrosion, reduces maintenance frequency after shutdown, prolongs the service life of equipment in high silt environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of emergency pumps, and particularly relates to an ultra-lightweight large-displacement emergency pump with a self-cooling function. BACKGROUND

[0002] The ultra-lightweight large-displacement emergency pump is a high-efficiency water pump device specially designed for rapid drainage, flood fighting, urban waterlogging treatment, and emergency rescue, etc. It has the characteristics of light weight and portability, and has the working capacity of large flow and high lift, and can discharge a large amount of accumulated water in a short time to improve the efficiency of emergency rescue.

[0003] However, in order to meet the lightweight requirement, the pump body structure is highly compact, which limits the heat dissipation space of the key heating parts (such as the cable wiring device). In the actual operation process, although the water body itself can be used to passively cool the main components of the pump body (such as the motor shell and the bearing), the conventional water flow guiding cooling method cannot form a targeted cooling effect at the cable and wiring device of the pump due to the concentrated heat and the special location, which may affect the overall performance and service life of the equipment.

[0004] Based on the above situation, the present application provides an ultra-lightweight large-displacement emergency pump with a self-cooling function. SUMMARY

[0005] In order to overcome the shortcomings of the existing ultra-lightweight large-displacement emergency pump that the cable and wiring device cannot be cooled in a targeted manner due to the lightweight structure design, the present application provides an ultra-lightweight large-displacement emergency pump with a self-cooling function.

[0006] An ultra-lightweight large-displacement emergency pump with a self-cooling function comprises a pump body, a filter screen is fixed to the outer side of the pump body, a cable and a wiring device are provided with a cable line, the movable end of the cable line passes out from the side wall of the pump body, a water guide frame is arranged at the cable and wiring device, symmetrically distributed fixing rings are fixed to the inner wall of the pump body, a sliding type sliding bracket is connected between the symmetrically distributed fixing rings, and the sliding bracket is fixed to the water guide frame.

[0007] In one embodiment, a water storage cavity is formed in the water guide frame, and the water storage cavity penetrates the upper bearing and the cable line to form a heat dissipation branch.

[0008] In one embodiment, a guide disc is slidingly connected to the upper bearing, symmetrically distributed clamping rods are slidingly connected to the guide disc, first tension springs are connected between the symmetrically distributed clamping rods and the guide disc, the symmetrically distributed first tension springs are wound around the adjacent clamping rods, symmetrically distributed clamping holes are formed in the side of the water guide frame close to the clamping rods, and the guide disc and the water guide frame are clamped through the clamping rods and the clamping holes.

[0009] In one of the embodiments, the upper bearing is fixedly connected with symmetrically distributed fixing frames, the symmetrically distributed fixing frames are slidingly connected with limiting frames, and the limiting frames are connected with the adjacent fixing frames through first springs.

[0010] In one of the embodiments, the water guide frame is provided with a water outlet on the side close to the cable, the top of the water guide frame is provided with a baffle for controlling the opening and closing of the water outlet, a torsional spring is connected between the baffle and the water guide frame, the torsional spring is wound on the baffle, and an L-shaped clamping frame is fixedly connected to the fixing ring on the side close to the cable.

[0011] In one of the embodiments, the water guide frame is provided with a one-way valve pipe, a push frame is slidingly connected in the one-way valve pipe, a second spring is connected between the push frame and the one-way valve pipe, the push frame is fixedly connected with a wedge-shaped frame, and a pressing frame is slidingly connected to the water guide frame.

[0012] In one of the embodiments, the pressing frame is provided with an annular inclined surface, and the inclined surface is in extrusion fit with symmetrically distributed clamping rods.

[0013] In one of the embodiments, the symmetrically distributed fixing rings are slidingly connected with clamping frames, the clamping frames are connected with the adjacent fixing rings through second tension springs, the symmetrically distributed second tension springs are wound on the adjacent clamping frames, the clamping frames are in contact with the sliding frame on the side away from each other, and the symmetrically distributed second tension springs are always in a deformed state.

[0014] In one of the embodiments, the side away from each other of the clamping frames is provided with a rubber pad.

[0015] The beneficial effects are that: through the cooperation of the water guide frame, the sliding frame, the limiting frame, the clamping rod, the baffle and the like, the branch line channel with a large inlet and a small outlet is established, the water flow is accelerated, the heat dissipation of the cable and the wiring device is strengthened, the temperature rise amplitude is reduced, and the overheating damage of the equipment is avoided; the water in the water guide frame cavity is stored after shutdown to keep the cable wet, the mud dry and caked is prevented, the abrasion of the cable insulation layer or the corrosion of the wiring end is avoided, the maintenance frequency after shutdown is reduced, and the service life of the equipment in the high mud environment is prolonged.

[0016] The mechanical linkage is triggered by the push frame, the wedge-shaped frame inclined surface drives the pressing frame to press down, the locking of the clamping rod to the water guide frame is released, the free sliding during flushing is realized, the mud on the inner wall and the bottom of the water guide frame is washed away by using water pressure, the dirt is accelerated to be discharged, the dry and caked is avoided, the abrasion of the cable and the corrosion of the pump body caused by the mud caked are effectively prevented, and the long-term reliability of the rescue pump in turbid water is improved.

[0017] The hydraulic drive and the mechanical locking are cooperated to realize the flow self-adaptive control of the cable heat dissipation system, and the heat dissipation demand and the equipment stability under the high turbidity working condition are effectively balanced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0019] Figure 2 This is a three-dimensional structural cross-sectional view of the cable, water guide frame, and slide frame components of the present invention.

[0020] Figure 3 This is a three-dimensional structural cross-sectional view of the pump body, cable, and water guide frame of the present invention.

[0021] Figure 4 This is a three-dimensional structural cross-sectional view of the guide plate, clamping rod, and fixing frame of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the components of the present invention, including the fixing frame, the limiting frame, and the first spring.

[0023] Figure 6 This is a three-dimensional structural diagram of the baffle, torsion spring, and L-shaped card holder components of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the components of the present invention, including the one-way valve tube, pusher, and wedge frame.

[0025] Figure 8 This is a three-dimensional structural cross-sectional view of the one-way valve tube, the second spring, and the pusher of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of the fixing ring, the locking bracket, and the second tension spring of the present invention.

[0027] In the attached diagram, the following are the reference numerals: 1-pump body, 2-filter screen, 3-cable, 4-water guide frame, 5-slide frame, 6-fixing ring, 7-guide plate, 8-clamping rod, 9-fixing frame, 10-limiting frame, 11-first spring, 12-baffle, 13-torsion spring, 14-L-shaped clamping frame, 15-one-way valve pipe, 16-push frame, 161-second spring, 17-wedge frame, 18-pressure frame, 19-first tension spring, 20-clamping frame, 21-second tension spring. Detailed Implementation

[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] Example 1: An ultra-lightweight, high-displacement emergency pump with self-cooling function, such as... Figures 1-3 As shown, it includes a pump body 1, which mainly includes a high-efficiency motor, cables and wiring devices, a power management module, a lightweight impeller, a compact volute and a self-cooling flow channel. The output shaft of the high-efficiency motor drives the lightweight impeller to rotate through the upper bearing to meet the large-volume drainage requirements.

[0030] The outer side of the pump body 1 is fixedly connected with a filter screen 2, which prevents large particles of silt from entering the inside of the pump body 1 and reduces the risk of wear of the impeller. A cable and wiring device is provided with a cable 3, the movable end of the cable 3 is led out from the side wall of the pump body 1, the cable and wiring device is provided with a water guide frame 4, the inside wall of the pump body 1 is fixedly connected with symmetrically distributed fixing rings 6, the symmetrically distributed fixing rings 6 are slidingly connected with a sliding frame 5, the sliding frame 5 is fixedly connected with the water guide frame 4, and the position of the water guide frame 4 is dynamically adjusted in response to water flow impact. The water guide frame 4 is provided with a water storage cavity inside, penetrates the upper bearing and the cable 3, and forms a heat dissipation branch.

[0031] As shown in Figure 4 , the upper bearing is slidingly connected with a guide disc 7, which can realize ±2mm axial displacement compensation when the impeller rotates at high speed, and reduce the risk of wear of the bearing caused by thermal expansion or vibration. The guide disc 7 is slidingly connected with symmetrically distributed clamping rods 8, and the symmetrically distributed clamping rods 8 and the guide disc 7 are connected with first tension springs 19. The symmetrically distributed first tension springs 19 are wound around adjacent clamping rods 8, which maintain the stable connection between the clamping rods 8 and the clamping holes in the vibration working condition of the pump body 1, prevent accidental tripping, and prevent accidental tripping. The side of the water guide frame 4 close to the clamping rod 8 is provided with symmetrically distributed clamping holes, and the guide disc 7 and the water guide frame 4 are clamped through the clamping rod 8 and the clamping hole.

[0032] As shown in Figure 5 , the upper bearing is fixedly connected with symmetrically distributed fixing frames 9, and the symmetrically distributed fixing frames 9 are slidingly connected with limit frames 10. The limit frame 10 and the adjacent fixing frame 9 are connected with a first spring 11, which is used for limiting the guide disc 7.

[0033] As shown in Figure 6 , the water guide frame 4 is provided with a water outlet on the side close to the cable 3, and the top of the water guide frame 4 is provided with a baffle 12 for controlling the opening and closing of the water outlet. The baffle 12 is hinged to the water guide frame 4 through a rotating shaft, and the baffle 12 and the water guide frame 4 are connected with a torsional spring 13. The torsional spring 13 is wound around the baffle 12, and provides a closing torque in normal state to maintain the sealing state of the water outlet. The fixing ring 6 close to the cable 3 is fixedly connected with an L-shaped clamping frame 14, and the horizontal segment of the L-shaped clamping frame 14 is located above the rotating shaft of the baffle 12. When the baffle 12 is opened by external force (such as water pressure rise or mechanical trigger), the L-shaped clamping frame 14 limits the maximum opening angle of the baffle 12 to be ≤45°, so as to avoid excessive turning and cause structural deformation.

[0034] In use, the rescue pump is placed in the drainage area, ensuring that the water inlet is completely immersed in water, the water outlet is extended to the flood discharge area through an external water pipe, and the pipe opening is fixed to prevent displacement. Check the cable and water pipe connection state, the cable needs to be made of waterproof rubber material and without joint, and the water pipe needs to be tight without damage. Verify the integrity of the filter screen 2 before starting to prevent large particles of silt from entering the pump body 1, avoiding clogging the lightweight impeller or damaging the internal structure.

[0035] After the high-efficiency motor is started, the upper bearing drives the light-weight impeller to rotate at high speed, forming a negative pressure suction force in the pump cavity. After the water flows through the filter screen 2, it enters the water inlet. The centrifugal force of the impeller pushes the water flow to be discharged at high speed from the water outlet. The external water pipe guides the water flow to the flood discharge area.

[0036] When the upper bearing rotates, it synchronously drives the fixed frame 9 and the limiting frame 10 to rotate. The centrifugal force pushes the limiting frame 10 to slide outward, compressing the first spring 11 and releasing the limiting constraint on the guide disc 7. At the same time, the upward thrust generated by the water inflow impacting the sliding frame 5 causes the sliding frame 5 to move upward, linking the water guide frame 4 and the baffle 12 to lift, and the clamping rod 8 synchronously drives the guide disc 7 to move upward.

[0037] After the baffle 12 moves upward and contacts the L-shaped clamping frame 14, it flips, opening the water outlet of the water guide frame 4 and forming a branch line channel with a difference in cross-sectional area (large inlet and small outlet). The branch water flow passes through the difference in cross-sectional area between the large inlet at the bottom and the small outlet at the top of the water guide frame 4, increasing the flow speed, not only strengthening the heat exchange efficiency of the cable and the wiring device, but also reducing the temperature rise amplitude.

[0038] After the high-efficiency motor is stopped, the first spring 11 releases the elastic force, pushing the limiting frame 10 to move inward and reset. The guide disc 7 and the water guide frame 4 move downward, and the baffle 12 closes the water outlet under the action of the torsional spring 13, blocking the branch water flow. After the water guide frame 4 is reset, it stores a certain amount of water in its inner cavity, keeping the cable end and the inner wall moist to prevent hard clumps from forming after the silt-containing water flow evaporates.

[0039] In summary, through the cooperation of the water guide frame, sliding frame, limiting frame, clamping rod, and baffle, a branch line channel with a large inlet and a small outlet is established, accelerating the water flow, strengthening the heat dissipation of the cable and the wiring device, reducing the temperature rise amplitude, and avoiding overheating damage to the equipment. After shutdown, the water guide frame 4 stores water in its inner cavity, keeping the cable moist to prevent silt from drying and clumping, avoiding abrasion of the cable insulation layer or corrosion of the wiring end, reducing the frequency of maintenance after shutdown, and prolonging the service life of the equipment in high-silt environments.

[0040] Example 2: Based on Example 1, as shown in Figure 7 and Figure 8 the upper part of the water guide frame 4 is provided with a one-way valve pipe 15, the one-way valve pipe 15 is slidably connected with a push frame 16, the push frame 16 and the one-way valve pipe 15 are connected with a second spring 161, the bottom of the push frame 16 is fixedly connected with a wedge-shaped frame 17, the water guide frame 4 is slidably connected with a pressing frame 18, the pressing frame 18 is provided with an annular inclined surface, and the inclined surface is in extrusion fit with the symmetrically distributed clamping rods 8.

[0041] With the use of the pump, if the residual silt in the inner cavity of the water guide frame 4 is not cleaned in time, hard clumps may be formed due to evaporation of water, causing wear of the cable insulation layer or corrosion of the internal structure of the pump body 1, so it needs to be cleaned regularly. The specific operation is as follows: the end of the water pipe is aligned with the push frame 16 and pressure is applied to push the push frame 16 inward, compressing the second spring 161 and opening the water inlet end of the one-way valve pipe 15, so that water flows into the inner part of the water guide frame 4. The inward movement of the push frame 16 synchronously drives the wedge-shaped frame 17 to slide inward, and the inclined surface of the wedge-shaped frame 17 extrudes the pressure frame 18 to move downward, forcing the clamping rod 8 to disengage from the clamping hole of the water guide frame 4, releasing the fixed state of the water guide frame 4, so that it can slide freely up and down.

[0042] The water flows into the inner cavity of the water guide frame 4 through the one-way valve pipe 15, and the water pressure is used to impact the silt deposited on the inner wall and bottom of the water guide frame 4. The dirty water is discharged from the bottom of the pump body 1 as the water guide frame 4 slides. The upward and downward sliding of the water guide frame 4 is matched with the flow of water to accelerate the discharge of silt and dirt, avoiding the drying and clumping of residual materials. After the flushing is completed, the water pipe is removed, the second spring 161 pushes the push frame 16 and the wedge-shaped frame 17 to reset outward, and the water guide frame 4 and the pressure frame 18 move downward under the action of gravity to reset, and the first tension spring 19 drives the clamping rod 8 to reinsert into the clamping hole of the water guide frame 4, ensuring the structural stability and preventing the displacement of the water guide frame 4 in subsequent operation. In summary, through the mechanical linkage triggered by the push frame 16, the inclined surface of the wedge-shaped frame 17 drives the pressure frame 18 to press downward, releasing the locking of the clamping rod 8 to the water guide frame 4, realizing the free sliding during flushing; the water pressure is used to flush the silt on the inner wall and bottom of the water guide frame 4, accelerating the discharge of dirt and avoiding drying and clumping, effectively preventing the cable wear and corrosion of the pump body 1 caused by silt clumping, and improving the long-term reliability of the rescue pump in turbid water.

[0043] As shown in Figure 9 The fixed ring 6 is symmetrically distributed and is slidably connected with the clamping frame 20, and the second tension spring 21 is connected between the adjacent fixed ring 6. The second tension spring 21 is always in a deformed state, forming a continuous clamping force on the sliding frame 5, inhibiting the sliding displacement, and the side of the clamping frame 20 away from each other is in contact with the sliding frame 5. The side of the clamping frame 20 away from each other is provided with a rubber pad.

[0044] When the water inflow in the pump is large, the water flow impact force can overcome the weight of the sliding frame 5 and the resistance of the second tension spring 21, pushing the sliding frame 5 to move upward, synchronously driving the water guide frame 4 to lift, opening the branch water flow channel, and the branch water flow continuously flows through the area of the cable and the pump body 1 wiring device, reducing the contact point temperature rise through forced convection, avoiding the risk of insulation layer aging or short circuit caused by high temperature.

[0045] If the filter screen 2 is blocked, resulting in a decrease in water inflow, the carriage 5 will tend to move downward due to its own weight. At this time, the second tension spring 21 exerts a lateral elastic force on the carriage 5 through the clamping bracket 20, and in combination with the friction coefficient of the rubber pad contact surface, a total resistance anti-skid locking force is formed. This mechanism ensures that the carriage 5 can still be lifted when the water inflow is small, maintaining the branch water flow heat dissipation function. In summary, through the synergistic effect of hydraulic drive and mechanical locking, the flow self-adaptive control of the cable heat dissipation system is realized, effectively balancing the heat dissipation demand and equipment stability under high turbidity working conditions.

[0046] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes can be made to these embodiments without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight, high-capacity emergency pump with self-cooling function, comprising a pump body (1), a filter screen (2) fixedly connected to the outside of the pump body (1), and a cable (3) provided on the cable and wiring device, the movable end of the cable (3) passing through the side wall of the pump body (1), characterized in that, A water guide frame (4) is provided at the cable and wiring device. A symmetrically distributed fixed ring (6) is fixedly connected to the inner wall of the pump body (1). A slide frame (5) is slidably connected between the symmetrically distributed fixed rings (6). The slide frame (5) is fixedly connected to the water guide frame (4). The water guide frame (4) has a water storage cavity inside, through which the upper bearing and cable (3) pass to form a heat dissipation branch; A guide plate (7) is slidably connected to the upper bearing. A symmetrically distributed locking rod (8) is slidably connected to the guide plate (7). A first tension spring (19) is connected between the symmetrically distributed locking rod (8) and the guide plate (7). The symmetrically distributed first tension spring (19) is wrapped around the adjacent locking rod (8). A symmetrically distributed locking hole is opened on the side of the water guide frame (4) near the locking rod (8). The guide plate (7) and the water guide frame (4) are locked together through the locking rod (8) and the locking hole. A symmetrically distributed fixed frame (9) is fixedly connected to the upper bearing. A limit frame (10) is slidably connected to each of the symmetrically distributed fixed frames (9). A first spring (11) is connected between each limit frame (10) and the adjacent fixed frame (9). The water guide frame (4) has an outlet on the side near the cable (3). The top of the water guide frame (4) has a baffle (12) to control the opening and closing of the outlet. A torsion spring (13) is connected between the baffle (12) and the water guide frame (4). The torsion spring (13) is wrapped around the baffle (12). An L-shaped bracket (14) is fixed on the fixing ring (6) near the cable (3). The water guide frame (4) is provided with a one-way valve pipe (15), and a pusher (16) is slidably connected inside the one-way valve pipe (15). A second spring (161) is connected between the pusher (16) and the one-way valve pipe (15). A wedge-shaped frame (17) is fixedly connected to the pusher (16), and a pressure frame (18) is slidably connected to the water guide frame (4). The pressure frame (18) is provided with an annular inclined surface, which is pressed and engaged with symmetrically distributed clamping rods (8).

2. The ultra-lightweight, high-displacement emergency pump with self-cooling function according to claim 1, characterized in that, Each of the symmetrically distributed fixed rings (6) is slidably connected to a positioning frame (20), and each of them is connected to a second tension spring (21). The symmetrically distributed second tension springs (21) are all wrapped around the adjacent positioning frame (20). The side of the positioning frame (20) that is far away from each other is in contact with the slide (5). The symmetrically distributed second tension springs (21) are always in a deformed state.

3. The ultra-lightweight, high-displacement emergency pump with self-cooling function according to claim 2, characterized in that, Rubber pads are provided on the opposite sides of the card holders (20).

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