Water inlet device matched with pump machine

Abstract

The utility model discloses a water inlet device matched with a pump machine, and mainly relates to the technical field of liquid material pumping. Comprising a barrel, a top plate, a liquid outlet and a liquid inlet, an outer filter screen is fixed in the middle of the interior of the barrel, a plurality of outer protruding parts protruding outwards are arranged on the peripheral side of the outer filter screen, the outer protruding parts are annularly arrayed relative to the outer filter screen, outer kerfs are formed in the outer protruding parts at equal intervals in the height direction, and the distance between every two adjacent outer kerfs is larger than the width of each outer kerf. An inner filter screen corresponding to the outer filter screen in shape is sleeved with the outer filter screen, inner protruding parts corresponding to the outer protruding parts are arranged on the peripheral side of the inner filter screen, inner kerfs are equidistantly formed in the inner protruding parts in the height direction, the inner kerfs and the outer kerfs are equal in width, the distance between every two adjacent outer kerfs corresponds to the distance between every two adjacent inner kerfs, and the inner filter screen has a lifting stroke. And the overlapping state of the inner kerf and the outer kerf is adjustable. The oil filter has the advantages that oil passing through the oil filter in front of a pump machine is filtered, and the throughput can be guaranteed preferentially by enlarging filter gaps.

Description

Technical Field

[0001] This utility model relates to the field of liquid pumping technology, specifically a water inlet device that works in conjunction with a pump. Background Technology

[0002] In the processing and production of petrochemical products, pumps are indispensable for providing power to transport liquid materials. Taking naphtha as an example, pumps are needed during loading and unloading, as well as in production processes (such as separation), to transport the medium, provide pressure, and circulate the liquid.

[0003] Due to factors such as production processes and storage conditions, oil feedstocks and their additives contain particulate impurities during production and transportation. If these impurities are not removed, they can damage the pump during operation and further impair subsequent reactions. Furthermore, filtering the oil feedstock before pumping can easily lead to poor flow characteristics in the filtration equipment due to its viscous texture and high impurity content, thus affecting the pump's feed. Utility Model Content

[0004] The purpose of this invention is to provide a water inlet device for use with a pump, which filters the oil passing through the pump and can prioritize the flow rate by increasing the filter gap.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] A water inlet device for use with a pump includes a cylindrical body, a top plate that seals the top of the cylindrical body, a liquid outlet on the side wall of the cylindrical body, and a liquid inlet at the bottom end of the cylindrical body.

[0007] An outer filter screen is fixed in the center of the cylinder. Multiple outwardly protruding portions are provided on the periphery of the outer filter screen. The outer ends of the protruding portions are arc-shaped curved surfaces. The protruding portions are arranged in a ring array opposite the outer filter screen. Equally spaced horizontal external slits are provided on each protruding portion along its height direction, with the distance between adjacent external slits greater than the width of the external slits.

[0008] An inner filter screen, corresponding to the shape of the outer filter screen, is fitted inside the outer filter screen. The outer curved surface of the inner filter screen matches the inner curved surface of the outer filter screen. An inner protrusion is provided on the periphery of the inner filter screen corresponding to the outer protrusion. An inner slit is provided at equal intervals along the height direction on the inner protrusion. The inner slit and the outer slit are set with the same width. The spacing between adjacent outer slits corresponds to the spacing between adjacent inner slits. The inner filter screen has a lifting stroke. Based on the lifting stroke of the inner filter screen, the overlap state of the inner slit and the outer slit is adjustable.

[0009] The outer filter screen has an upper sealing ring on its top side and a lower sealing ring on its bottom side. The outer rings of the upper and lower sealing rings are sealed to the inner wall of the cylinder. The inner filter screen has an upper sealing plate at its top end to close it. The upper sealing plate has an upper edge plate with a corresponding shape on its periphery. The inner filter screen has a lower sealing plate at its bottom end to close it. The lower sealing plate has a lower edge plate with a corresponding shape on its periphery. The outer side of the upper edge plate slides and seals with the inner ring of the upper sealing plate. The outer side of the lower edge plate slides and seals with the inner ring of the lower sealing plate.

[0010] The lower sealing plate is provided with a downwardly extending liquid inlet pipe in the center, and the liquid inlet pipe is disposed inside the liquid inlet and is sealed to the liquid inlet.

[0011] Two vertically extending guide rods are fixed on the upper sealing plate. A slide block that seals with and slides vertically connected to the guide rods is fixed through the top plate. An installation plate is fixed to the top of the guide rods. A cylinder is also fixed on the top plate. A telescopic rod that cooperates with the cylinder is provided at the top of the cylinder. The top of the telescopic rod is fixed to the installation plate.

[0012] A cleaning pipe runs through the middle of the upper sealing plate, and a spray head located below the upper sealing plate is provided at the bottom end of the cleaning pipe. The cleaning pipe runs through the top plate and is connected to the cleaning liquid tank through a valve and a pump.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This device, installed before the pump, filters the oil while ensuring the pump's feed flow rate. It utilizes a raised structure to increase the filtration area, combined with a slit structure to improve throughput during filtration. Simultaneously, the slight vertical displacement of the inner filter screen (lifting stroke) alters the overlap of the inner and outer slits, creating varying filtration gaps. This allows for adjustments to the filtration gap when filtration interferes with the pump's feed flow, ensuring sufficient flow and unaffected pump operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0017] Figure 3 This is the utility model Figure 2 Enlarged view of part I.

[0018] Figure 4 This is a utility model Figure 3 A schematic diagram showing the overlap between the inner and outer slits in a nearby local area.

[0019] Figure 5 This is a utility model Figure 3 A schematic diagram showing the overlap of the inner and outer slits in a nearby local area.

[0020] Figure 6 This is a schematic diagram showing the disassembled inner and outer filter screens of this utility model.

[0021] The labels shown in the attached diagram:

[0022] 1. Cylinder; 2. Top plate; 3. Inner filter screen; 4. Outer filter screen; 5. Outer protrusion; 6. Outer slit; 7. Inner protrusion; 8. Inner slit; 9. Upper sealing ring; 10. Lower sealing ring; 11. Upper sealing plate; 12. Lower sealing plate; 13. Upper edge plate; 14. Lower edge plate; 15. Liquid inlet pipe; 16. Liquid inlet; 17. Liquid outlet; 18. Guide rod; 19. Slide seat; 20. Mounting plate; 21. Cylinder; 22. Cleaning pipe. Detailed Implementation

[0023] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0024] Unless otherwise specified, the instruments, reagents, and materials used in the following embodiments are all conventional instruments, reagents, and materials already available in the prior art and can be obtained through legitimate commercial channels. Unless otherwise specified, the experimental methods and detection methods used in the following embodiments are all conventional experimental methods and detection methods already available in the prior art.

[0025] Example:

[0026] This water inlet device is used for rapid and efficient filtration of oily feedstocks, such as naphtha. It removes obvious particulate impurities, thus ensuring the smooth operation of the pump.

[0027] The main structure includes a cylindrical body 1, which is a closed-structure straight cylindrical body 1, making it easy to disassemble, clean and maintain.

[0028] The top of the cylinder 1 is open, and a top plate 2 is provided at the open position to close it. A flange is provided on the edge of the open, and the top plate 2 is sealed and fixed to the flange by bolts.

[0029] The cylinder 1 is provided with an outer filter screen 4 and an inner filter screen 3 connected by an inner and outer sleeve.

[0030] The outer filter 4 has outwardly protruding portions 5 on its periphery. The outer ends of the protruding portions 5 are arc-shaped curved surfaces without any included angles, improving throughput. The protruding portions 5 are arranged in a ring relative to the outer filter 4. Each protruding portion 5 has a horizontally extending external slit 6 that penetrates it. The external slit 6 is a horizontally extending elongated gap, not a mesh structure, making it less prone to jamming and further improving throughput. Through the eight protruding curved surface structures, a wavy, folded filter surface is obtained, thereby greatly increasing the filtration area and improving the throughput.

[0031] The inner filter 3 and the outer filter 4 have corresponding shapes. The inner filter 3 is fitted inside the outer filter 4. The inner filter 3 also has an inner protrusion 7 on its periphery corresponding to the outer protrusion 5, so that the inner curved surface of the outer filter 4 and the outer curved surface of the inner filter 3 come into contact. The inner protrusion 7 also has an inner slit 8, which is the same width as the outer slit 6.

[0032] The spacing between adjacent inner slits 8 is greater than the width of the inner slit 8, and the spacing between adjacent outer slits 6 corresponds to the spacing between adjacent inner slits 8. When the inner slits 8 and outer slits 6 are aligned at their heights, they can completely overlap and allow for high-flow-rate passage of the liquid medium. However, when the inner slits 8 and outer slits 6 are misaligned, a portion of the adjacent inner slits 8 blocks the outer slits 6, thereby forming a closed chamber between the inner filter screen 3 and the outer filter screen 4.

[0033] Therefore, based on the structural characteristics of the inner filter screen 3 and the outer filter screen 4, the size of the filtration gap can be adjusted by changing the relative positions of the inner slit 8 and the outer slit 6. This allows for an appropriate increase in the filtration gap when the filtration operation affects the pump's liquid inlet, thereby improving the flow rate. Multiple units of this device can be connected in series before the pump to achieve a multi-stage filtration effect.

[0034] The outer filter screen 4 has an upper sealing ring 9 on its top side and a lower sealing ring 10 on its bottom side. The outer rings of the upper sealing ring 9 and the lower sealing ring 10 are sealed and fixed to the inner wall of the cylinder 1.

[0035] The inner filter 3 has an upper sealing plate 11 at its top end to close it, and a lower sealing plate 12 at its bottom end to close it. The upper sealing plate 11 and the lower sealing plate 12 have corresponding upper edge plates 13 and lower edge plates 14 on their periphery. The outer side of the upper edge plate 13 slides and seals with the inner ring of the upper sealing plate 11, and the outer side of the lower edge plate 14 slides and seals with the inner ring of the lower sealing plate 12. The lower sealing plate 12 and the upper sealing plate 11 close both ends of the inner filter 3, allowing liquid to enter the inner cavity of the cylinder 1 only through the inner filter 3 and the outer filter 4. A downward-extending liquid inlet pipe 15 is centrally located on the lower sealing plate 12. The bottom end of the cylinder 1 has a liquid inlet 16 that connects to the liquid inlet pipe 15. The upper side wall of the cylinder 1 has a liquid outlet 17 located within the area of ​​the outer filter 4 and the inner filter 3.

[0036] Two vertically extending guide rods 18 are fixed on the upper sealing plate 11. A slide block 19, which is sealed and slidably connected to the guide rods 18, is fixed through the top plate 2. A mounting plate 20 is fixed to the top of the guide rods 18. A cylinder 21 is also fixed on the top plate 2. A telescopic rod is provided at the top of the small cylinder 21, and the top of the telescopic rod is fixed to the mounting plate 20. Based on the guidance and drive of the cylinder 21 and the guide rods 18, the inner filter screen 3 has a vertical lifting stroke, but the lifting stroke is very small, limited to the switching of the inner cut 8 and the outer cut 6 from the flush state to the misaligned state, and the upper sealing ring 9 and the lower sealing ring 10 are always kept within the relative height range of the corresponding edge plates.

[0037] The relative height of the controllable inner filter screen 3 and outer filter screen 4 can be adjusted by cylinder 21, thereby adjusting the overlap state of the inner slit 8 and the outer slit 6 (when the two are completely aligned, the throughput is the greatest and the particle size of the intercepted particles is the largest). Therefore, when there are viscous materials or other materials that affect the pump's pumping, the overlap can be appropriately increased to improve the throughput.

[0038] For ease of maintenance, a cleaning pipe 22 is inserted through the middle of the upper sealing plate 11. The bottom end of the cleaning pipe 22 is provided with a spray head located below the upper sealing plate 11. The cleaning pipe 22 passes through the top plate 2 and is connected to the cleaning liquid tank through a valve and a pump.

[0039] For the cleaning waste liquid, a drain pipe (not shown in the figure) can be installed on the upper sealing plate 11. The bottom end of the drain pipe is located at the bottom of the liquid inlet 16, thereby discharging the internal cleaning waste liquid. The discharged waste liquid is collected and can be used for further recycling. Alternatively, a T-junction can be installed on the liquid inlet 16 to connect the material conveying line and the recycling line respectively, allowing the waste liquid to be discharged from the bottom liquid inlet 16.

[0040] When this device performs filtration, by controlling the lifting stroke, the inner slit 8 and the outer slit 6 are made to overlap or partially overlap. At this time, the lower sealing ring 10 seals with the lower edge plate 14, and the upper sealing ring 9 seals with the upper edge plate 13. The liquid enters from the liquid inlet 16 at the bottom of the cylinder 1, passes through the inner slit 8 of the inner filter screen 3 and the outer slit 6 of the outer filter screen 4 in sequence, and enters the space between the cylinder 1 and the outer filter screen 4. It can be discharged from the liquid outlet 17. The filtration gap can be adjusted by lifting the inner filter screen 3.

[0041] When slag discharge is required, cylinder 21 can be activated to slightly lift the inner filter screen 3, causing the inner slit 8 and the outer slit 6 to be misaligned. The inner filter screen 3 and the outer filter screen 4 block each other, forming a closed cavity. The cavity can be soaked by injecting cleaning agent to fully remove oil and discharge impurities and filter residue.

[0042] The adhesion of oily materials inevitably requires the use of cleaning agents such as surfactants. These agents need a certain amount of time to react with the oil stains. Therefore, by forming a closed inner cavity, the cleaning agent can be filled into the inner filter 3 to achieve a soaking effect. This combines soaking and rinsing, and through repeated soaking or alternating soaking and rinsing, the oil and sludge removal effect can be achieved. Furthermore, the closed inner cavity structure restricts the use of the cleaning solution, making it easy to rinse thoroughly and avoiding contamination problems caused by incomplete cleaning.

[0043] Therefore, based on this device, the advantage of performing coarse filtration of the liquid medium before the pump is:

[0044] The improved permeability does not affect pump operation or increase the burden on the pump. This includes: replacing mesh filtration with slit filtration, which can greatly improve permeability; obtaining more filtration area and improving filtration efficiency by designing a convex-concave structure (inner protrusion 7 and outer protrusion 5) for the filter surface; and adjusting the filter gap by changing the overlap of the inner slit 8 and the outer slit 6, thereby compromising permeability.

Claims

1. A water inlet device for use with a pump, comprising a cylindrical body, a top plate for sealing the top of the cylindrical body, a liquid outlet on the side wall of the cylindrical body, and a liquid inlet at the bottom end of the cylindrical body, characterized in that, An outer filter screen is fixed in the center of the cylinder. Multiple outwardly protruding portions are provided on the periphery of the outer filter screen. The outer ends of the protruding portions are arc-shaped curved surfaces. The protruding portions are arranged in a ring array opposite the outer filter screen. Outer slits are provided at equal intervals along the height direction on the protruding portions, horizontally penetrating them. The distance between adjacent outer slits is greater than the width of the outer slits. An inner filter screen, corresponding to the shape of the outer filter screen, is nested inside the outer filter screen. The outer curved surface of the inner filter screen matches the inner curved surface of the outer filter screen. Inner protruding portions are provided on the periphery of the inner filter screen corresponding to the outer protruding portions. Inner slits are provided at equal intervals along the height direction on the inner protruding portions, penetrating them. The inner slits are of the same width as the outer slits, and the distance between adjacent outer slits corresponds to the distance between adjacent inner slits. The inner filter screen has a lifting stroke, and the overlap state of the inner and outer slits is adjustable based on the lifting stroke of the inner filter screen.

2. The water inlet device for use with a pump according to claim 1, characterized in that, The outer filter screen has an upper sealing ring on its top side and a lower sealing ring on its bottom side. The outer rings of the upper and lower sealing rings are sealed to the inner wall of the cylinder. The inner filter screen has an upper sealing plate at its top end to close it. The upper sealing plate has an upper edge plate with a corresponding shape on its periphery. The inner filter screen has a lower sealing plate at its bottom end to close it. The lower sealing plate has a lower edge plate with a corresponding shape on its periphery. The outer side of the upper edge plate slides and seals with the inner ring of the upper sealing plate. The outer side of the lower edge plate slides and seals with the inner ring of the lower sealing plate.

3. The water inlet device for use with a pump according to claim 2, characterized in that, The lower sealing plate is provided with a downwardly extending liquid inlet pipe in the center, and the liquid inlet pipe is disposed inside the liquid inlet and is sealed to the liquid inlet.

4. The water inlet device for use with a pump according to claim 2, characterized in that, Two vertically extending guide rods are fixed on the upper sealing plate. A slide block that seals with and slides vertically connected to the guide rods is fixed through the top plate. An installation plate is fixed to the top of the guide rods. A cylinder is also fixed on the top plate. A telescopic rod that cooperates with the cylinder is provided at the top of the cylinder. The top of the telescopic rod is fixed to the installation plate.

5. The water inlet device for use with a pump according to claim 2, characterized in that, A cleaning pipe runs through the middle of the upper sealing plate, and a spray head located below the upper sealing plate is provided at the bottom end of the cleaning pipe. The cleaning pipe runs through the top plate and is connected to the cleaning liquid tank through a valve and a pump.

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