A filtering and separating device for the water inlet of a pump body

Abstract

The present invention discloses a filtering and separating device for the water inlet of a pump body, which comprises a cylinder body and an annular filter disposed within the cylinder body. A gap for accommodating impurities in water is formed between the cylinder body and the annular filter. A plurality of water inlets are provided on the circumferential side wall of the cylinder body, and a plurality of filter holes for filtering impurities in water are provided on the circumferential side wall of the annular filter, so as to filter the impurities in the gap. With such a setting, sewage enters from the water inlets on the cylinder body, and large-particle impurities such as branches, stones, and plastics in the water are filtered in the gap through the annular filter. The impurities are discharged from the lower end of the cylinder body, and thus cannot enter the pump body, enabling the pump body to pump water normally without being blocked by impurities, without causing work stoppage and affecting the working efficiency of the pump body, protecting the pump body from being damaged or burned out due to blockage by impurities, effectively improving the cycle utilization rate of the pump body, and solving the problem in the prior art that sewage pumps are prone to blockage, resulting in the abnormal operation of the pump body or even burning out the pump body, thus causing poor sewage discharge and seriously affecting life and production.

Description

Technical Field

[0001] The invention relates to the technical field of water pumps, and more specifically to a pump body water inlet filtering and separating device. Background Art

[0002] In daily production and life, people produce a lot of wastewater and sewage, so it is very common to use sewage pumps to transport urban sewage. However, since sewage contains large particles of insoluble impurities such as leaves and branches, small plastics, and small stones, and the water inlet of the sewage pump base is large, during normal pumping work, these insoluble impurities will enter the sewage pump from the water inlet and block the pump body, causing water flow to be blocked, making the pump body unable to work normally, and even burning or damaging the pump body, bringing great inconvenience and loss to daily life and production. Therefore, how to solve the problem in the prior art that sewage pumps are easy to be blocked, making the pump body unable to work normally, and even burning the pump body, thereby causing poor sewage discharge and bringing serious impact on life and production, has become an important technical problem to be solved by those skilled in the art. Summary of the invention

[0003] The purpose of the present invention is to provide a pump body water inlet filtering and separating device to solve the problem in the prior art that sewage pumps are easily blocked, causing the pump body to fail to work normally or even burn the pump body, thereby causing poor sewage discharge and bringing serious impact on life and production.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] The present invention provides a pump body water inlet filtering and separating device, comprising a cylinder and an annular filter arranged in the cylinder, a gap for accommodating impurities in water is formed between the cylinder and the annular filter, a plurality of water inlets are arranged on the peripheral side wall of the cylinder, and a plurality of filtering holes for filtering impurities in water are arranged on the peripheral side wall of the annular filter to filter the impurities in the water so as to filter the impurities in the gap.

[0006] Preferably, the water inlets are arranged in multiple layers along the axial direction of the cylinder, and the water inlets in two adjacent layers are staggered, and a tongue is provided on the side edge of each water inlet.

[0007] Preferably, each of the tongue pieces is arc-shaped.

[0008] Preferably, an angle a is formed between the tongue piece and a section of the peripheral side wall of the cylinder, and the angle a of each layer gradually increases from the upper end to the lower end of the cylinder.

[0009] Preferably, the water inlet is provided with three layers along the axial direction of the cylinder, and along the direction from the upper end to the lower end of the cylinder, the angle a of each layer is 13 degrees to 17 degrees, 28 degrees to 32 degrees, and 43 degrees to 47 degrees respectively.

[0010] Preferably, an annular baffle is provided at the lower end of the cylinder body, and a plurality of protrusions are provided on the lower surface of the annular baffle and are distributed at intervals.

[0011] Preferably, a first flanging extending away from the center thereof and a plurality of first mounting plates connected to the first flanging and used for mounting on a sewage pump are provided at the upper end of the annular filter.

[0012] Preferably, a second flanging extending away from the center thereof and a connecting ring located below the second flanging and sleeved outside the cylinder body are provided at the upper end of the cylinder body, and a second mounting plate corresponding to each of the first mounting plates is provided on the connecting ring.

[0013] Preferably, the filter holes are uniformly distributed on the circumferential side wall of the annular filter, the distance between two adjacent filter holes is 1.5 cm - 2.5 cm, and / or the diameter of each filter hole is 0.5 cm - 1 cm.

[0014] Preferably, the annular filter is conical, and the diameter of the upper end of the annular filter is larger than the diameter of the lower end of the annular filter.

[0015] In the technical solution provided by the present invention, a filter separation device for a pump body water inlet includes a cylinder body and an annular filter disposed inside the cylinder body. A gap for accommodating impurities in water is formed between the cylinder body and the annular filter. A plurality of water inlets are provided on the circumferential side wall of the cylinder body, and a plurality of filter holes for filtering impurities in water are provided on the circumferential side wall of the annular filter to filter the impurities in the gap. With such a setting, sewage enters from the water inlets on the cylinder body, and large particle branches, small stones, small plastics and other impurities in the water are filtered in the gap by the annular filter. The impurities are discharged from the lower end of the cylinder body, so that they cannot enter the pump body, enabling the pump body to normally pump sewage, without causing the work to stop due to blockage by impurities and affecting the working efficiency of the pump body, protecting the pump body from being damaged or burned out due to blockage by impurities, effectively improving the cycle utilization rate of the pump body, and thus solving the problem in the prior art that the sewage pump is prone to blockage, causing the pump body to fail to work normally, and even burning out the pump body, resulting in poor sewage discharge and seriously affecting life and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of the filter separation device for the pump body water inlet in the embodiment of the present invention;

[0018] Figure 2 It is a schematic structural view of the cylinder body in the embodiment of the present invention;

[0019] Figure 3 It is a distribution diagram of the tongue pieces of the cylinder body in the embodiment of the present invention;

[0020] Figure 4 It is a schematic structural view of the annular baffle in the embodiment of the present invention;

[0021] Figure 5 It is a schematic structural view of the annular filter in the embodiment of the present invention;

[0022] Figure 6 It is a schematic structural view of the connecting ring in the embodiment of the present invention.

[0023] Figures 1 - 6 In:

[0024] 1 - cylinder body; 2 - annular filter; 3 - water inlet; 4 - filter hole; 5 - tongue piece; 6 - annular baffle; 7 - protrusion; 8 - first flanging; 9 - first mounting plate; 10 - second flanging; 11 - connecting ring; 12 - second mounting plate; 13 - section plane. Detailed implementation manners

[0025] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts belong to the scope protected by the present invention.

[0026] Hereinafter, the embodiments will be described in detail with reference to the drawings. In addition, the embodiments shown below do not impose any limitation on the content of the invention described in the claims. Further, all the contents of the configurations shown in the following embodiments are not limited to those necessary for the solution of the invention described in the claims.

[0027] It should be noted that the directions "upper" and "lower" mentioned in the text refer to those when the pump body water inlet filtration and separation device is placed as Figure 1 shown. The up and down directions in the figure are the up and down directions referred to. Then, the relatively upper positions of the components in the figure are their upper ends and upper surfaces, and the relatively lower positions of the components in the figure are their lower ends and lower surfaces.

[0028] Please refer to the attached Figures 1 - 6 , the pump body water inlet filtration and separation device provided in this embodiment includes a cylinder body 1 and an annular filter 2 arranged in the cylinder body 1, Figure 1 The direction indicated by the arrow in the figure is the sewage flow direction. AsFigure 2 As shown in the figure, the cylinder body 1 is cylindrical with openings at both the upper and lower ends. A gap for accommodating impurities in water is formed between the cylinder body 1 and the annular filter 2. A plurality of water inlets 3 are provided on the circumferential side wall of the cylinder body 1, and a plurality of filter holes 4 for filtering impurities in water are provided on the circumferential side wall of the annular filter 2 to filter the impurities in the gap. With such a setting, when the sewage pump works, the impeller inside it rotates rapidly, and the water body enters the pump body in a vortex by centrifugal force. At this time, the sewage rotates into the filtering device, which is consistent with the direction of the water body rotating and sucked into the pump body inside. Then the sewage will rotate into the filtering device through the water inlets on the circumferential side wall of the cylinder body, and large particle branches, small stones, small plastics and other impurities in the water are filtered in the gap between the cylinder body and the annular filter through the annular filter. In this way, the pump body itself rotates and sucks in the water body, and the sewage rotates into the filtering device. The greater the centrifugal force generated by the rotation during work, the better the effect of filtering and removing impurities. Moreover, the centrifugal force generated by the rotation will continuously generate inertia, increasing the efficiency of continuous pumping and slag discharging. The filtered water body is input into the pump body upward from the internal cavity of the annular filter under the action of the pump body, and these heavier impurities are discharged from the lower end of the cylinder body and carried outside, so that they cannot enter the pump body, enabling the pump body to normally pump sewage, without being blocked by impurities and causing work stoppage and affecting the working efficiency of the pump body, protecting the pump body from being blocked and damaged or burned by impurities, and effectively improving the cycle utilization rate of the pump body, thus solving the problem in the prior art that the sewage pump is prone to blockage, causing the pump body to not work properly or even burning out the pump body, resulting in unsmooth sewage discharge and seriously affecting life and production.

[0029] In this embodiment, the water inlets 3 are arranged in multiple layers along the axial direction of the cylinder body 1, and multiple water inlets 3 evenly distributed around the circumference of the cylinder body are arranged in each layer, as Figure 2 shown. Five water inlets 3 can be arranged in each layer. It should be noted that the "axial direction" of the cylinder body mentioned in the text refers to the direction when the cylinder body is in the placement state as Figure 2 shown in the figure, and the up and down direction in the figure is the axial direction of the cylinder body. And the adjacent layers of water inlets 3 are staggeredly distributed, and a tongue piece 5 extending inward is provided on the side edge of each water inlet 3. Each tongue piece 5 is arranged on the same side edge of the water inlet 3, that is, when looking directly at each water inlet, the tongue piece 5 is arranged on the right side edge of the water inlet 3 in the figure. With such a setting, water inlets are provided all around the cylinder body to ensure sufficient water inflow. Each tongue piece plays a role in guiding and diverting the flow, enabling the impurities to fully contact the annular filter, thereby improving the filtering effect and not affecting the normal water conveyance of the pump body.

[0030] In the preferred scheme of this embodiment, each tongue piece 5 is arc-shaped. Since the water body flows in a vortex shape and the tongue piece 5 is arc-shaped, which is consistent with the water flow direction, the water flow resistance is reduced, which is beneficial to the inflow of the water body.

[0031] As Figure 3As shown, an included angle a is formed between the tongue piece 5 and the section plane 13 of the circumferential side wall of the cylinder body 1, and the included angle a of each layer gradually increases in the direction from the upper end to the lower end of the cylinder body 1. Figure 3 The dotted lines in the figure indicate the section planes 13 at the positions of the respective tongue pieces on the cylinder body. With such a setting, the included angle a gradually increases from top to bottom, and each tongue piece presents a three-dimensional space crossing shape. When the pump body is opened and water flows in from the surface of each tongue piece and approaches the annular filter, a downward swirling liquid driving force will be generated. Heavier particulate impurities will be swirled to the lower end, and the rotational driving force will continuously promote the movement of the impurities towards the lower end of the cylinder body and be discharged, thereby improving the impurity separation effect.

[0032] In a specific embodiment of the present invention, the water inlet 3 is axially provided with three layers along the cylinder body 1, and in the direction from the upper end to the lower end of the cylinder body 1, the included angle a of each layer is successively 13 degrees - 17 degrees, 28 degrees - 32 degrees, and 43 degrees - 47 degrees respectively. Specifically, as Figure 2 shown, from top to bottom, the included angle a of the first layer is preferably 15 degrees, the included angle a of the second layer is preferably 30 degrees, and the included angle a of the third layer is preferably 45 degrees. Such a design is reasonable and gradually approaches, helping to generate a stable downward rotational driving force when the water flow passes through each layer of tongue pieces, promoting the discharge of impurities, and having good feasibility and usage effects.

[0033] In this embodiment, an annular baffle 6 is provided at the lower end of the cylinder body 1, and a plurality of spaced protrusions 7 are provided on the lower surface of the annular baffle 6. With such a design, if the impurities at the bottom are lifted by the water flow, the baffle can block the upward movement of the impurities, so that they are taken out and pushed out again by the downward liquid driving force, effectively improving the filtering effect. As Figure 4 shown, the dotted lines in the figure represent the respective protrusions 7 evenly distributed on the lower surface of the annular baffle 6. Both side edges of each protrusion 7 are arc-shaped and are consistent with the direction of the rotating inflow of the water body, which is conducive to the discharge of impurities under the action of rotational centrifugal force. And along the direction from near the center of the cylinder body 1 to far from the center of the cylinder body 1, the distance between the two side edges gradually increases. In this way, the protrusions on the lower surface of the annular baffle raise the overall structure. On the one hand, a certain impurity discharge space is reserved at the bottom, and on the other hand, a certain diversion space is formed between adjacent two protrusions, which is dispersed to the surrounding, facilitating the discharge of impurities.

[0034] As Figure 5 shown, the upper end of the annular filter 2 is provided with a first flanging 8 extending in a direction away from its center and a plurality of first mounting plates 9 connected to the first flanging 8 and used for mounting on the sewage pump. In this way, when the annular filter is inserted into the cylinder body, it can be conveniently clamped to the upper end of the cylinder body through the first flanging and complete the assembly with the base of the sewage pump. The respective first mounting plates 9 are evenly distributed along the circumference of the annular filter 2. Specifically, four first mounting plates 9 are provided, and each first mounting plate 9 is provided with a mounting hole for inserting a bolt.

[0035] The upper end of the cylinder body 1 is provided with a second flanging 10 extending away from its center and a connecting ring 11 located below the second flanging 10 and sleeved outside the cylinder body 1. To facilitate the installation of the connecting ring 11, the second flanging 10 can be detachably connected to the upper end of the cylinder body 1 through bolts. Of course, the second flanging 10 and the cylinder body 1 can also be integrally formed, but the connecting ring 11 needs to be sleeved outside the cylinder body 1 first, and then the upper end of the cylinder body 1 is folded to form the second flanging 10. As Figure 6 shown, the connecting ring 11 is provided with second mounting plates 12 corresponding to each of the first mounting plates 9. The second mounting plates 12 are evenly distributed along the circumferential direction of the connecting ring 11. Correspondingly, four second mounting plates 12 are provided, and each second mounting plate 12 is provided with a mounting hole for inserting a bolt. In this way, by inserting bolts on the first mounting plate and the second mounting plate, the detachable connection of the entire filtering device and the sewage pump base is realized, which is convenient for subsequent maintenance and disassembly.

[0036] In this embodiment, the filtering holes 4 are evenly distributed on the circumferential side wall of the annular filter 2. The distance between two adjacent filtering holes 4 is 1.5 cm - 2.5 cm, and / or the diameter of each filtering hole 4 is 0.5 cm - 1 cm. This can not only ensure sufficient water passing capacity, but also ensure that impurities in the water are blocked outside the annular filter, fully separating and filtering impurities from the sewage to prevent the pump body from being blocked. Of course, the size of the filtering holes 4 can be changed according to actual use requirements to meet the corresponding filtering conditions and be able to remove impurities. For example, if the specifications of the pump body are different and the inlet diameter of the pump body is different, the size of the impurities to be removed will also be different. At this time, the size of the filtering holes 4 can be adaptively changed according to the specific situation.

[0037] As Figure 5 shown, the annular filter 2 is conical, with openings at both the upper and lower ends, and the diameter of the upper end of the annular filter 2 is larger than the diameter of the lower end of the annular filter 2. With this design, from top to bottom, the gap between the annular filter and the cylinder body gradually becomes larger, facilitating the downward movement and discharge of impurities. In addition, to prevent the impurities at the bottom from being carried up by the water flow and moving upward, the lower end opening of the annular filter 2 can be closed to block the upward movement of the impurities.

[0038] In actual use, by adopting the pump body inlet filtering and separating device in this embodiment, the pump body can be effectively protected, and the pumped materials can be filtered well. Large particle branches, small stones, small plastics and other impurities can be separated outside the pump body and cannot enter the inside of the pump body, so as to maximize normal pumping and improve the working efficiency of the sewage pump. For example, before the above device is used, when pumping 150 cubic meters of mixed sewage under complex conditions at a speed of 20 cubic meters per hour, in the early stage of the pump body operation, it is basically necessary to stop running every 1-2 hours, take out the pump body, thoroughly clean the internal sundries, and then put it back to continue pumping sewage. In the later stage of the pump body operation, the interval downtime will become shorter and shorter. After pumping for 5.5 hours, the pump body basically has to be taken out and completely cleaned every 30-50 minutes before it can continue to pump sewage until the goal is completed. During the whole pumping process, it is necessary to intermittently stop and clean 8 times, including 3 times in the early stage and 5 times in the later stage, with a total time consumption of 11 hours. After using the above device, when pumping 150 cubic meters of mixed sewage under complex conditions at a speed of 20 cubic meters per hour, only two pump stops are required throughout the process. In the early stage, the pump body runs smoothly, the water outlet of the pump body is normal and stable, and the sound is normal without abnormal noise. When stopping the pump for inspection after pumping for 4.5 hours, it can be found that the pump body is normal without blockage, and pumping continues. When pumping for 6.5 hours, it is found that the water output becomes relatively small. At this time, when stopping the pump, only the pump body is displaced, and the pumping position is changed to continue pumping without cleaning the pump body until the goal is completed. During the whole pumping process, only 2 stops are made, and the pump body does not need to be cleaned, with a total time consumption of 8 hours. From this experiment, it can be seen that the pump body inlet filtering and separating device can significantly improve the cycle utilization rate of the pump body, maximize normal pumping, and protect the pump body from being blocked by impurities and damaged, which is a major reform in the industry. Of course, the above pump body inlet filtering and separating device can also be applied to other types of submersible pumps; but it is not limited to submersible pumps, and can also be used in other industries for filtering of feed, intake air, air blowing, etc. For example, for an engine, a vortex air flow is generated at the intake port, and it can be installed at the intake port to filter impurities in the gas and extend the service life of the engine.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A filtering and separating device for the water inlet of a pump body, characterized in that, It includes a cylinder body (1) and an annular filter (2) arranged inside the cylinder body (1). A gap for accommodating impurities in water is formed between the cylinder body (1) and the annular filter (2). A plurality of water inlets (3) are provided on the circumferential side wall of the cylinder body (1), and a plurality of filter holes (4) for filtering impurities in water are provided on the circumferential side wall of the annular filter (2) to filter the impurities in the gap. The water inlets (3) are arranged in multiple layers along the axial direction of the cylinder body (1), and adjacent two layers of the water inlets (3) are staggered. A tongue piece (5) is provided on the side edge of each water inlet (3). Each of the tongue pieces (5) is arc-shaped. An included angle a is formed between the tongue piece (5) and the tangent plane (13) of the circumferential side wall of the cylinder body (1), and the included angle a of each layer gradually increases along the direction from the upper end to the lower end of the cylinder body (1). The water inlets (3) are arranged in three layers along the axial direction of the cylinder body (1), and along the direction from the upper end to the lower end of the cylinder body (1), the included angle a of each layer is respectively 13 degrees - 17 degrees, 28 degrees - 32 degrees, and 43 degrees - 47 degrees in sequence. An annular baffle (6) is provided at the lower end of the cylinder body (1), and a plurality of protrusions (7) distributed at intervals are provided on the lower surface of the annular baffle (6).

2. The pump body water inlet filtering and separating device according to claim 1, characterized in that, A first flanging (8) extending away from its center direction is provided at the upper end of the annular filter (2), and a plurality of first mounting plates (9) connected to the first flanging (8) and used for mounting on a sewage pump are provided.

3. The pump body water inlet filtering and separating device according to claim 2, characterized in that, A second flanging (10) extending away from its center direction is provided at the upper end of the cylinder body (1), and a connecting ring (11) located below the second flanging (10) and sleeved outside the cylinder body (1) is provided. Second mounting plates (12) corresponding to each of the first mounting plates (9) are provided on the connecting ring (11).

4. The pump body water inlet filtering and separating device according to claim 1, characterized in that, Each of the filter holes (4) is evenly distributed on the circumferential side wall of the annular filter (2), the distance between adjacent two filter holes (4) is 1.5 cm - 2.5 cm, and / or the diameter of each of the filter holes (4) is 0.5 cm - 1 cm.

5. The pump body water inlet filtering and separating device according to claim 1, characterized in that, The annular filter (2) is conical, and the diameter of the upper end of the annular filter (2) is larger than the diameter of the lower end of the annular filter (2).

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