Automatic lifting and filtering device for water inlet of pump station

Abstract

The utility model belongs to prefabricated pump station's technical field relates to a kind of pump station water inlet automatic lifting filter device, including the grid being set in the end of pump station water inlet pipe, the grid is slipped between working position and overhauling position along vertical guide rail, the lower portion of the grid is provided with lifting plate, the lifting plate is provided with filter screen and energy storage lifting mechanism, when the grid falls to working position, its gravity drives lifting plate to descend, so that the energy storage lifting mechanism is in energy storage state, when the grid rises to overhauling position, the energy storage lifting mechanism releases energy and drives lifting plate to ascend, at this time, the filter screen constitutes the plugging filter structure of water inlet pipe. The pump station water inlet automatic lifting filter device provided by the utility model has the advantages of simple structure, low cost, small space occupation, easy maintenance and reliable operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of prefabricated pumping stations and relates to an automatic lifting and filtering device for pumping station inlet water. Background Technology

[0002] Prefabricated pumping stations typically receive water containing large debris such as plastics and tree branches. When the inlet screen is under maintenance, it is often removed from the pumping station, allowing these impurities to directly enter and potentially clog the pumps, preventing them from operating normally.

[0003] To prevent large impurities from entering the pumping station, a screen well is typically installed at the front end. Depending on the permitted area of ​​the land, a mechanical screen or a bar screen can be placed. Alternatively, an electric gate can be installed directly at the pumping station's inlet, linked to the inlet screen. The gate is normally open during operation and closed when the screen is under maintenance.

[0004] However, all of the above institutions have shortcomings:

[0005] Mechanical bar screens: They occupy a large area, making land acquisition difficult in many areas, and are expensive. During installation, cranes and a large number of personnel are required, and personnel and vehicles need to be arranged regularly to clean up garbage or maintain the equipment.

[0006] Although grating mesh has a small footprint and is inexpensive to install, it still requires regular cleaning.

[0007] Electric gates: Although they can be installed in gate wells outside the pumping station or inside the pumping station, like mechanical bar screens, they involve issues such as land acquisition, cost, initial installation, and subsequent operation and maintenance. Utility Model Content

[0008] This utility model addresses the shortcomings of existing technologies by providing an automatic lifting and filtering device for pump station inlet, which has the advantages of simple structure, low cost, small footprint, convenient maintenance, and reliable operation.

[0009] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0010] An automatic lifting and filtering device for pump station inlet includes a screen installed at the end of the pump station inlet pipe. The screen slides between a working position and a maintenance position along a vertical guide rail. A lifting plate is installed below the screen, and a filter screen and an energy storage lifting mechanism are installed on the lifting plate. When the screen falls to the working position, its gravity drives the lifting plate to move downward, putting the energy storage lifting mechanism into an energy storage state. When the screen rises to the maintenance position, the energy storage lifting mechanism releases energy to drive the lifting plate to move upward. At this time, the filter screen constitutes a sealing and filtering structure for the inlet pipe.

[0011] In the above-mentioned automatic lifting and filtering device for pump station inlet, a mounting base is fixed inside the pump station, and the energy storage lifting mechanism is located at the bottom of the lifting plate and fixedly connected to the mounting base; furthermore, the lifting plate is an L-shaped plate, the horizontal part of which is used to connect the energy storage lifting mechanism and the supporting grid, and the vertical part is used to install the filter screen.

[0012] In the above-mentioned automatic lifting and filtering device for pump station water inlet, the bottom of the water inlet pipe is provided with a radial groove that matches the filter screen. The filter screen moves along the direction defined by the radial groove, and the diameter of the filter screen is adapted to the inner diameter of the water inlet pipe.

[0013] In the above-mentioned automatic lifting and filtering device for pump station inlet, when the lifting plate moves down to the lowest point, the upper end of the filter screen is higher than the lower end of the radial groove; that is, when the grid falls to the working position, the upper end of the filter screen has not left the radial groove.

[0014] In the above-mentioned automatic lifting and filtering device for pump station inlet, the thickness of the filter screen and the axial dimension of the radial groove are both less than 5mm, and the filter pore diameter of the filter screen is less than 10mm.

[0015] In the above-mentioned automatic lifting and filtering device for pump station water intake, guide rods are provided on both sides of the filter screen. The guide rods are vertically arranged and clamped to the outer wall of the water inlet pipe. The guide rods are fixed on the moving plate. When the moving plate moves up and down, the guide rods and the outer wall of the water inlet pipe generate sliding friction.

[0016] In the above-mentioned automatic lifting and filtering device for pump station inlet, the energy storage lifting mechanism is selected from springs, passive hydraulic systems, and corrugated airbags.

[0017] In the above-mentioned automatic lifting and filtering device for pump station inlet, the energy storage lifting mechanism is a spring, and the spring is wrapped with a telescopic tube; multiple springs can be provided to form a matrix structure of spring groups.

[0018] In the above-mentioned automatic lifting and filtering device for pump station inlet, the screen is a pulverizing screen or a basket screen.

[0019] Compared with the prior art, this utility model has the following advantages:

[0020] 1. This utility model provides an automatic lifting and filtering device for pump station inlet water. The lifting plate moves up and down by the weight of the screen and the energy storage lifting mechanism to switch the working state of the filter screen. When the screen is under maintenance, it can automatically block the water inlet channel to prevent large impurities from flowing into the pump station, thereby greatly reducing the occurrence of blockage caused by water pump suction, greatly improving the life of water pump and the operational stability of pump station, and reducing water pump operation and maintenance costs.

[0021] 2. This utility model also has the following advantages: the filter device has a simple structure and does not require electrical equipment for driving; the filter device is installed in the pump station, avoiding the need to consider the land area and civil engineering design requirements in the early design, thus reducing design costs and design time; the filter device can be directly installed in the factory area without on-site installation, reducing on-site installation costs and labor time; in the later stage, there is no need to send special personnel to manage the component, only to check or replace it periodically, which can reduce operation and maintenance costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model (working position);

[0023] Figure 2 This is a structural schematic diagram of the present invention (inspection position);

[0024] Figure 3 This is a partial structural schematic diagram (side view) of the present invention;

[0025] Figure 4 This is a partial structural schematic diagram (front view) of this utility model;

[0026] Reference numerals: 1. Pump station; 2. Inlet pipe; 3. Bar screen; 4. Vertical guide rail; 5. Lifting plate; 6. Filter screen; 7. Energy storage lifting mechanism; 8. Mounting base; 9. Radial slot; 10. Guide rod. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-4 :

[0028] An automatic lifting and filtering device for pump station inlet includes a grille 3 installed at the end of the inlet pipe 2 of pump station 1. The grille 3 slides between a working position and a maintenance position along a vertical guide rail 4. A lifting plate 5 is installed below the grille 3. A filter screen 6 and an energy storage lifting mechanism 7 are installed on the lifting plate 5. When the grille 3 falls to the working position, its gravity drives the lifting plate 5 to move downward, so that the energy storage lifting mechanism 7 is in an energy storage state. When the grille 3 rises to the maintenance position, the energy storage lifting mechanism 7 releases energy to drive the lifting plate 5 to move upward. At this time, the filter screen 6 constitutes a blocking and filtering structure for the inlet pipe 2.

[0029] The operation of this embodiment is as follows: When the pump station 1 is running normally, the bottom of the lifting plate 5 supports the grille 3. Due to the gravity of the grille 3, the lifting plate 5 is at its lowest position and compresses the energy storage lifting mechanism 7 to store energy. At this time, the filter screen 6 is also at its lowest position, which does not affect the water inlet flow path. External sewage enters the grille 3 through the inlet pipe 2, and after being filtered by the grille 3, it enters the pump station 1. When the grille 3 needs to be repaired, the grille 3 is lifted along the vertical guide rail 4. The energy storage lifting mechanism 7 loses the constraint of the gravity of the grille 3, begins to release energy and drives the lifting plate 5 to move upward. The filter screen 6 moves upward accordingly. When it moves to the highest position, the filter screen 6 cuts off the water inlet flow path. External sewage enters through the inlet pipe 2, is filtered by the filter screen 6, and then enters the pump station 1.

[0030] The pump station 1 is equipped with a mounting base 8. The energy storage lifting mechanism 7 is located at the bottom of the lifting plate 5 and is fixedly connected to the mounting base 8. Furthermore, the lifting plate 5 is an L-shaped plate, with its horizontal part used to connect the energy storage lifting mechanism 7 and the supporting grid 3, and its vertical part used to install the filter screen 6.

[0031] To prevent the filter screen 6 from interfering with the fit between the grille 3 and the inlet pipe 2, a radial groove 9 is provided at the bottom of the inlet pipe 2 to mate with the filter screen 6. The filter screen 6 moves along the direction defined by the radial groove 9, and the diameter of the filter screen 6 is adapted to the inner diameter of the inlet pipe 2. Furthermore, the thickness of the filter screen 6 and the axial dimension of the radial groove 9 are both less than 5mm, and the filter aperture of the filter screen 6 is less than 10mm. In this embodiment, by setting the radial groove 9 to cooperate with the movement of the filter screen 6, interference between the filter screen 6 and the grille 3 can be avoided, and the vertical movement of the filter screen 6 can be ensured to smoothly cut off the water inlet flow path. After the filter screen 6 moves down, although a small gap will be generated in the radial groove 9, this gap can only allow a small amount of water to pass through, and garbage and other solids cannot flow into the pump station 1 through this gap, so it will not affect the normal operation of the pump station 1. Preferably, the filter screen is made of 3mm thick stainless steel plate laser-cut and bent.

[0032] When the lifting plate 5 moves down to the lowest point, the upper end of the filter screen 6 is higher than the lower end of the radial slot 9; that is, when the grille 3 falls to the working position, the upper end of the filter screen 6 does not leave the radial slot 9, so as to ensure that the filter screen 6 can be accurately inserted into the radial slot 9 and move vertically along it.

[0033] To further ensure the stability of the movement of the filter screen 6, guide rods 10 are provided on both sides of the filter screen 6. The guide rods 10 are vertically arranged and clamped to the outer wall of the water inlet pipe 2. The guide rods 10 are fixed to the moving plate. When the moving plate moves up and down, the guide rods 10 and the outer wall of the water inlet pipe 2 generate sliding friction.

[0034] In this embodiment, the energy storage lifting mechanism 7 is a spring. Furthermore, the spring is wrapped with a telescopic tube to prevent fixed debris from entering the spring and affecting its operation. Preferably, multiple springs can be provided to form a matrix structure of spring groups.

[0035] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A pump station water inlet automatic lifting filter device, comprising a grid (3) arranged at the end of a water inlet pipe (2) of a pump station (1), the grid (3) sliding along a vertical guide rail (4) between a working position and a maintenance position, characterized in that, The lower part of the grid (3) is provided with a lifting plate (5), which is provided with a filter screen (6) and an energy storage lifting mechanism (7). When the grid (3) falls to the working position, the gravity drives the lifting plate (5) to move downward, so that the energy storage lifting mechanism (7) is in the energy storage state. When the grid (3) rises to the maintenance position, the energy storage lifting mechanism (7) releases energy to drive the lifting plate (5) to move upward. At this time, the filter screen (6) constitutes the blocking and filtering structure of the water inlet pipe (2).

2. The automatic lifting filter device for water inlet of pump station according to claim 1, characterized in that, The pump station (1) is fixedly provided with a mounting seat (8), and the energy storage lifting mechanism (7) is arranged at the bottom of the lifting plate (5) and fixedly connected with the mounting seat (8).

3. The automatic lifting filter device for water inlet of pump station according to claim 1, characterized in that, The bottom of the water inlet pipe (2) is provided with a radial notch (9) matched with the filter screen (6). The filter screen (6) moves along the direction defined by the radial notch (9). The diameter of the filter screen (6) is matched with the inner diameter of the water inlet pipe (2).

4. The automatic lifting filter device for water inlet of pump station according to claim 3, characterized in that, When the lifting plate (5) moves to the lowest point, the upper end position of the filter screen (6) is higher than the lower end position of the radial notch (9).

5. The automatic lifting filter device for water inlet of pump station according to claim 1, characterized in that, The thickness of the filter screen (6) and the axial dimension of the radial notch (9) are both less than 5 mm, and the filter aperture of the filter screen (6) is less than 10 mm.

6. The automatic lifting filter device for water inlet of pump station according to claim 1, characterized in that, Both sides of the filter screen (6) are provided with guide rods (10), which are vertically arranged and clamped on the outer wall of the water inlet pipe (2).

7. The automatic lifting filter device for water inlet of pump station according to claim 1, characterized in that, The energy storage lifting mechanism (7) is selected from a spring, a passive hydraulic system and a corrugated air bag.

8. The automatic lifting filter device for water inlet of pump station according to claim 1, characterized in that, When the energy storage lifting mechanism (7) is a spring, the spring is wrapped with an expansion tube.

9. The automatic lifting filter device for water inlet of pump station according to claim 1, characterized in that, The grid (3) is a crushing grid or a basket grid.

Images