Ultra-light large-displacement emergency pump with self-cooling function

Abstract

The invention discloses an ultra-light large-displacement emergency pump with a self-cooling function, and relates to the technical field of emergency pumps, the ultra-light large-displacement emergency pump comprises a pump body, an output shaft of an efficient motor of the pump body drives a light impeller to rotate through an upper bearing, a filter screen is fixedly connected to the outer side of the pump body, and a cable and a wiring device of the pump body are provided with cables; the movable end of the cable penetrates out of the side wall of the pump body, and a water guide frame is arranged at the position of the cable and the wiring device. Through mutual cooperation of the water guide frame, the sliding frame, the limiting frame and the like, a branch channel with a large inlet and a small outlet is established, water flow is accelerated, heat dissipation of a cable and a wiring device is enhanced, the temperature rise amplitude is reduced, and equipment is prevented from being damaged due to overheating; after shutdown, the inner cavity of the water guide frame stores water to keep the cable wet, silt drying and caking are prevented, cable insulation layer abrasion or terminal corrosion is avoided, the maintenance frequency after shutdown is reduced, and the service life of equipment in a high silt environment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of emergency pumps, in particular to an ultra-light large-displacement emergency pump with a self-cooling function. Background Art

[0002] The ultra-light large-displacement emergency pump is a high-efficiency water pump equipment specially designed for scenarios such as rapid drainage, flood control and rescue, urban waterlogging treatment and emergency rescue. It is light in weight and easy to carry. It also has the working capacity of large flow and high head. It can discharge a large amount of accumulated water in a short time and improve rescue efficiency.

[0003] However, in order to meet the demand for lightweight, the pump body structure is highly compact, resulting in limited heat dissipation space in key heat-generating parts (such as cable wiring devices). In actual operation, although the main components of the pump body (such as motor housing and bearings) can be passively cooled with the help of the flow of water itself, the wiring device between the cable and the pump has a relatively concentrated heat generation and a special location. The conventional water flow diversion cooling method is difficult to form a targeted cooling effect, resulting in a lack of obvious temperature drop in this area, which may affect the overall performance and service life of the equipment.

[0004] Based on the above situation, the present invention proposes an ultra-light large-displacement emergency pump with a self-cooling function. Summary of the invention

[0005] In order to overcome the disadvantage of existing ultralight large-displacement emergency pumps that the wiring device between the cable and the pump cannot be subjected to targeted temperature reduction treatment due to the lightweight structural design, the present invention provides an ultralight large-displacement emergency pump with a self-cooling function.

[0006] The invention discloses an ultralight large-displacement emergency pump with a self-cooling function, comprising a pump body, a filter screen fixedly connected to the outer side of the pump body, a cable provided on a cable and a wiring device, the movable end of the cable passing through the side wall of the pump body, a water guide frame provided at the cable and the wiring device, symmetrically distributed fixing rings fixedly connected to the inner wall of the pump body, a slide frame slidably connected between the symmetrically distributed fixing rings, and the slide frame fixedly connected to the water guide frame.

[0007] In one of the embodiments, a water storage cavity is opened in the water guide frame, which passes through the upper bearing and the cable to form a heat dissipation branch.

[0008] In one of the embodiments, a guide plate is slidably connected to the upper bearing, and symmetrically distributed clamping rods are slidably connected to the guide plate. First tension springs are connected between the symmetrically distributed clamping rods and the guide plate, and the symmetrically distributed first tension springs are all wound around adjacent clamping rods. Symmetrically distributed clamping holes are opened on one side of the water guide frame close to the clamping rod, and the guide plate and the water guide frame are clamped together through the clamping rods and the clamping holes.

[0009] In one embodiment, symmetrically distributed fixing frames are fixedly connected to the upper bearing, and the symmetrically distributed fixing frames are all slidably connected to limit frames, and a first spring is connected between the limit frames and the adjacent fixing frames.

[0010] In one of the embodiments, the water guide frame is provided with a water outlet on the side close to the cable, and a baffle for controlling the opening and closing of the water outlet is provided on the top of the water guide frame. A torsion spring is connected between the baffle and the water guide frame, and the torsion spring is wound around the baffle. An L-shaped bracket is fixed to the fixing ring on the side close to the cable.

[0011] In one embodiment, a one-way valve tube is provided on the water guide frame, a push frame is slidably connected inside the one-way valve tube, a second spring is connected between the push frame and the one-way valve tube, a wedge frame is fixedly connected to the push frame, and a pressure frame is slidably 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 pressed and matched with the symmetrically distributed clamping rods.

[0013] In one of the embodiments, the symmetrically distributed fixing rings are all slidably connected with a positioning frame, and a second tension spring is connected between the positioning frame and the adjacent fixing ring. The symmetrically distributed second tension springs are all wound around the adjacent positioning frames, and the sides of the positioning frames that are away from each other are in contact with the sliding frame. The symmetrically distributed second tension springs are always in a deformed state.

[0014] In one embodiment, rubber pads are provided on the sides of the positioning frames that are away from each other.

[0015] The beneficial effects are as follows: the present invention establishes a branch channel with a large inlet and a small outlet through the cooperation of the water guide frame, the slide frame, the limit frame, the clamping rod, the baffle plate, etc., accelerates the water flow, strengthens the heat dissipation of the cable and the wiring device, reduces the temperature rise, and avoids overheating and damage to the equipment; after shutdown, the water guide frame cavity stores water to keep the cable moist, prevents the silt from drying and agglomerating, avoids the wear of the cable insulation layer or corrosion of the wiring terminal, reduces the maintenance frequency after shutdown, and extends the service life of the equipment in a high silt environment.

[0016] The present invention triggers mechanical linkage through the push frame, and the inclined surface of the wedge frame drives the pressing frame to press down, thereby releasing the lock of the water guide frame on the clamping rod, and realizing free sliding during flushing; water pressure is used to flush the inner wall and bottom sediment of the water guide frame, accelerate the discharge of dirt, avoid drying and agglomeration, effectively prevent cable wear and pump body corrosion caused by sediment agglomeration, and improve the long-term reliability of the emergency pump in turbid water.

[0017] The present invention realizes adaptive flow control of the cable cooling system through the synergistic effect of hydraulic drive and mechanical locking, and effectively balances the cooling demand and equipment stability under high turbidity conditions. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the baffle, torsion spring, L-shaped bracket and other components of the present invention.

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the one-way valve tube, push frame, wedge frame and other components of the present invention.

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

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the fixing ring, the retaining frame and the second tension spring of the present invention.

[0027] In the accompanying drawings: 1-pump body, 2-filter screen, 3-cable, 4-water guide frame, 5-slide, 6-fixed ring, 7-guide plate, 8-clamping rod, 9-fixed frame, 10-limiting frame, 11-first spring, 12-baffle, 13-torsion spring, 14-L-type clamping frame, 15-one-way valve tube, 16-push frame, 161-second spring, 17-wedge frame, 18-pressure frame, 19-first tension spring, 20-clamping frame, 21-second tension spring. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] Example 1: An ultra-light large-displacement emergency pump with self-cooling function, such as Figure 1-Figure 3 As shown, it includes a pump body 1, which mainly includes a high-efficiency motor, a cable and wiring device, 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 achieve large-displacement drainage requirements.

[0030] A filter screen 2 is fixedly connected to the outer side of the pump body 1 to prevent large particles of mud and sand from entering the interior of the pump body 1 and reduce the risk of impeller wear. A cable 3 is provided on the cable and wiring device, and the movable end of the cable 3 passes through the side wall of the pump body 1. A water guide frame 4 is provided at the cable and wiring device. Symmetrically distributed fixing rings 6 are fixedly connected to the inner wall of the pump body 1, and slides 5 are slidably connected between the symmetrically distributed fixing rings 6. The slides 5 are fixed to the water guide frame 4, and the position of the water guide frame 4 is dynamically adjusted in response to the impact of water flow. A water storage cavity is opened in the water guide frame 4, which passes through the upper bearing and the cable 3 to form a heat dissipation branch.

[0031] like Figure 4 As shown, the upper bearing is slidably connected with a guide plate 7, which can achieve ±2mm axial displacement compensation when the impeller rotates at high speed, reducing the risk of bearing wear caused by thermal expansion or vibration; the guide plate 7 is slidably connected with symmetrically distributed clamping rods 8, and first tension springs 19 are connected between the symmetrically distributed clamping rods 8 and the guide plate 7. The symmetrically distributed first tension springs 19 are all wound around the adjacent clamping rods 8 to maintain a stable connection between the clamping rods 8 and the clamping holes under the vibration condition of the pump body 1 to prevent accidental disengagement. Symmetrically distributed clamping holes are opened on the side of the water guide frame 4 close to the clamping rod 8, and the guide plate 7 and the water guide frame 4 are clamped together through the clamping rods 8 and the clamping holes.

[0032] like Figure 5 As shown, the upper bearing is fixed with symmetrically distributed fixing frames 9, and the symmetrically distributed fixing frames 9 are all slidably connected with limiting frames 10. A first spring 11 is connected between the limiting frame 10 and the adjacent fixing frame 9 for limiting the guide plate 7.

[0033] like Figure 6 As shown, the water guide frame 4 is provided with a water outlet on the side close to the cable 3, and a baffle 12 for controlling the opening and closing of the water outlet is provided on the top of the water guide frame 4. The baffle 12 is hinged to the water guide frame 4 through a rotating shaft, and a torsion spring 13 is connected between the baffle 12 and the water guide frame 4. The torsion spring 13 is wound around the baffle 12. Under normal circumstances, the torsion spring 13 provides a closing torque to keep the water outlet sealed. An L-shaped bracket 14 is fixedly connected to the fixing ring 6 on the side close to the cable 3, and its horizontal section is located above the rotating shaft of the baffle 12. When an external force (such as increased water pressure or mechanical triggering) pushes the baffle 12 to open, the L-shaped bracket 14 limits the maximum opening angle of the baffle 12 to ≤45° to avoid structural deformation caused by excessive flipping.

[0034] When in use, place the rescue pump in the drainage area, ensure that the water inlet is completely immersed in water, extend the water outlet to the flood discharge area through an external water pipe, and fix the pipe mouth to prevent displacement, check the connection status of the cable and water pipe. The cable must be made of waterproof rubber material and have no joints. The water pipe must be intact and tightened. Verify the integrity of the filter 2 before starting to prevent large particles of sediment from entering the pump body 1 to avoid clogging the lightweight impeller or damaging the internal structure.

[0035] After the high-efficiency motor is started, the upper bearing drives the lightweight impeller to rotate at high speed, forming negative pressure suction in the pump chamber. The water flows into the water inlet after being filtered by the filter 2. The centrifugal force of the impeller pushes the water to be discharged from the water outlet at high speed, and 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 limit frame 10 to rotate synchronously. The centrifugal force pushes the limit frame 10 to slide outward, compresses the first spring 11, and releases the limit constraint on the guide plate 7; at the same time, the incoming water flow impacts the slide 5 to generate an upward thrust, the slide 5 moves up, and the water guide frame 4 and the baffle 12 are lifted, and the clamping rod 8 synchronously drives the guide plate 7 to move up.

[0037] The baffle 12 moves up and contacts the L-shaped bracket 14 and then flips over, opening the water outlet of the water guide frame 4 to form a branch channel with a different cross-sectional area (large inlet and small outlet). The branch water flows through the cross-sectional area difference between the large inlet at the bottom and the small outlet at the top of the water guide frame 4, thereby increasing the flow rate, which not only enhances the heat exchange efficiency between the cable and the wiring device, but also reduces the temperature rise.

[0038] After the high-efficiency motor stops, the first spring 11 releases its elastic force, pushing the limit frame 10 to move inward and reset, the guide plate 7 and the water guide frame 4 move downward, and the baffle 12 closes the water outlet under the action of the torsion spring 13 to block the branch water flow. After the water guide frame 4 is reset, its inner cavity stores a certain amount of water to keep the cable end and the inner wall moist, preventing the formation of hard lumps after the silt-containing water flow evaporates.

[0039] In summary, through the cooperation of the water guide frame, slide frame, limit frame, clamping rod, baffle, etc., a branch channel with a large inlet and a small outlet is established to accelerate the water flow, strengthen the heat dissipation of cables and wiring devices, reduce the temperature rise, and avoid overheating and damage of equipment; after shutdown, the inner cavity of the water guide frame 4 stores water to keep the cable moist, prevent the silt from drying and agglomerating, avoid wear of the cable insulation layer or corrosion of the terminal, reduce the maintenance frequency after shutdown, and extend the service life of the equipment in a high silt environment.

[0040] Embodiment 2: Based on embodiment 1, Figure 7 and Figure 8 As shown, a one-way valve tube 15 is provided on the upper part of the water guide frame 4, a push frame 16 is slidably connected inside the one-way valve tube 15, a second spring 161 is connected between the push frame 16 and the one-way valve tube 15, a wedge frame 17 is fixedly connected to the bottom of the push frame 16, a pressing frame 18 is slidably connected to the water guide frame 4, and an annular inclined surface is provided on the pressing frame 18, which is squeezed and matched with the symmetrically distributed clamping rods 8.

[0041] With the use of the pump, if the residual sand in the inner cavity of the water guide frame 4 is not cleaned in time, it may form hard agglomerates due to water evaporation, causing wear of the cable insulation layer or corrosion of the internal structure of the pump body 1. Therefore, it is necessary to clean it regularly. The specific operation is as follows: align the end of the water pipe with the push frame 16 to apply pressure, push the push frame 16 to move inward, compress the second spring 161 and open the water inlet end of the one-way valve pipe 15, and the water flows into the water guide frame 4. The inward movement of the push frame 16 synchronously drives the wedge frame 17 to slide inward, and its inclined surface squeezes the pressing frame 18 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 inner wall of the water guide frame 4 and the sediment deposited at the bottom. The dirty water slides with the water guide frame 4 and is discharged from the pump body 1 from the bottom. The up and down sliding of the water guide frame 4 cooperates with the water flow to accelerate the discharge of sediment and dirt to prevent the residue from drying and agglomerating. After the flushing is completed, the water pipe is removed, and the second spring 161 pushes the push frame 16 and the wedge frame 17 to reset outward. The water guide frame 4 and the pressure frame 18 move down and back to their original positions under the action of gravity, and the first tension spring 19 drives the card rod 8 to re- The card hole of the new water guide frame 4 is inserted to ensure the structural stability and prevent the water guide frame 4 from being displaced during subsequent operation. In summary, the mechanical linkage is triggered by the push frame 16, and the inclined surface of the wedge frame 17 drives the pressing frame 18 to press down, thereby releasing the lock of the card rod 8 on the water guide frame 4 and achieving free sliding during flushing; the water pressure is used to flush the inner wall and bottom sediment of the water guide frame 4, accelerate the discharge of dirt, avoid drying and agglomeration, effectively prevent the cable wear and pump body 1 corrosion caused by sediment agglomeration, and improve the long-term reliability of the emergency pump in turbid water.

[0043] like Fig. 9 As shown, the symmetrically distributed fixing rings 6 are all slidably connected with a clamping frame 20, and a second tension spring 21 is connected between it and the adjacent fixing ring 6. The symmetrically distributed second tension springs 21 are all wound around the adjacent clamping frames 20, and the side of the clamping frames 20 away from each other is in contact with the slide 5. The symmetrically distributed second tension springs 21 are always in a deformed state, forming a continuous clamping force on the slide 5 to suppress sliding displacement, and the side of the clamping frames 20 away from each other is provided with a rubber pad.

[0044] When the amount of water entering the pump is large, the impact force of the water flow can overcome the weight of the slide 5 and the resistance of the second tension spring 21, pushing the slide 5 to move upward, and simultaneously driving the water guide frame 4 to rise, opening the branch water flow channel, and the branch water flow continues to flow through the cable and the wiring device area of ​​the pump body 1, reducing the temperature rise of the contact point through forced convection, avoiding the risk of aging of the insulation layer or short circuit due to high temperature.

[0045] If the filter 2 is blocked and the water intake is reduced, the slide 5 tends to move downward due to its own weight. At this time, the second tension spring 21 applies a lateral elastic force to the slide 5 through the positioning frame 20, and combined with the friction coefficient of the rubber pad contact surface, an anti-slip locking force of the total resistance is formed. This mechanism ensures that the slide 5 can still remain in a lifted state when the water volume is slightly smaller, maintaining the heat dissipation function of the branch water flow. In summary, through the synergistic effect of hydraulic drive and mechanical locking, the flow adaptive control of the cable cooling system is realized, effectively balancing the heat dissipation requirements and equipment stability under high turbidity conditions.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultra-light large-displacement emergency pump with a self-cooling function, comprising a pump body (1), a filter screen (2) fixedly connected to the outer side of the pump body (1), a cable (3) provided on the cable and wiring device, and a 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, symmetrically distributed fixing rings (6) are fixedly connected to the inner wall of the pump body (1), a slide frame (5) is slidably connected between the symmetrically distributed fixing rings (6), and the slide frame (5) is fixedly connected to the water guide frame (4).

2. The ultra-light large-displacement emergency pump with self-cooling function according to claim 1, characterized in that: A water storage cavity is provided in the water guide frame (4) and penetrates the upper bearing and the cable (3) to form a heat dissipation branch.

3. The ultra-light large-displacement emergency pump with self-cooling function according to claim 2, characterized in that: A guide plate (7) is slidably connected to the upper bearing, symmetrically distributed clamping rods (8) are slidably connected to the guide plate (7), first tension springs (19) are connected between the symmetrically distributed clamping rods (8) and the guide plate (7), and the symmetrically distributed first tension springs (19) are wound around adjacent clamping rods (8), and symmetrically distributed clamping holes are opened on one side of the water guide frame (4) close to the clamping rods (8), and the guide plate (7) and the water guide frame (4) are clamped together through the clamping rods (8) and the clamping holes.

4. The ultra-light large-displacement emergency pump with self-cooling function according to claim 3, characterized in that: The upper bearing is fixedly connected with symmetrically distributed fixing frames (9), and the symmetrically distributed fixing frames (9) are all slidably connected with limiting frames (10), and a first spring (11) is connected between the limiting frames (10) and the adjacent fixing frames (9).

5. The ultra-light large-displacement emergency pump with self-cooling function according to claim 4, characterized in that: The water guide frame (4) is provided with a water outlet on a side close to the cable (3), a baffle (12) for controlling the opening and closing of the water outlet is provided on the top of the water guide frame (4), a torsion spring (13) is connected between the baffle (12) and the water guide frame (4), the torsion spring (13) is wound around the baffle (12), and an L-shaped bracket (14) is fixedly connected to the fixing ring (6) on the side close to the cable (3).

6. The ultra-light large-displacement emergency pump with self-cooling function according to claim 5, characterized in that: A one-way valve tube (15) is provided on the water guide frame (4), a push frame (16) is slidably connected inside the one-way valve tube (15), a second spring (161) is connected between the push frame (16) and the one-way valve tube (15), a wedge frame (17) is fixedly connected to the push frame (16), and a pressing frame (18) is slidably connected to the water guide frame (4).

7. The ultra-light large-displacement emergency pump with self-cooling function according to claim 6, characterized in that: The pressing frame (18) is provided with an annular inclined surface, which is pressed and matched with the symmetrically distributed clamping rods (8).

8. The ultra-light large-displacement emergency pump with self-cooling function according to claim 7, characterized in that: The symmetrically distributed fixing rings (6) are all slidably connected with a positioning frame (20), and a second tension spring (21) is connected between the positioning frame and the adjacent fixing ring (6). The symmetrically distributed second tension springs (21) are all wound around the adjacent positioning frame (20), and the side of the positioning frame (20) that is away from each other is in contact with the slide frame (5), and the symmetrically distributed second tension springs (21) are always in a deformed state.

9. The ultra-light large-displacement emergency pump with self-cooling function according to claim 8, characterized in that: The sides of the positioning frames (20) that are away from each other are each provided with a rubber pad.

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