A submersible sewage pump

Abstract

The present invention discloses a submersible sewage pump, comprising a motor assembly, a pump body and a filter screen, wherein the lower end of the motor assembly is equipped with a pump body, and the lower end of the pump body is equipped with a filter screen capable of filtering sewage impurities; a fixed collar, which is sleeved and fixed on the outer side of the lower end of the pump body; and further comprising: a bottom plate, which is fixed on the bottom surface of the sewage, and a limiting sleeve is fixed on the upper end of the bottom plate, and a limiting rod is slidably arranged inside the upper end of the limiting sleeve; an impeller, whose upper end is connected to the output end of the motor assembly; two guide rods, which are symmetrically installed on the left and right sides of the inside of the filter screen; and a fixed plate, which is fixedly installed inside the limiting sleeve. The submersible sewage pump, through the cooperation of the limiting sleeve and the limiting rod, promotes the overall situation of not being affected by the ground and tilting, avoids the problem of vibration of the unit due to uneven force, and can enhance the effect of removing impurities outside the filter screen.

Description

Technical Field

[0001] The invention relates to the technical field of sewage pumps, in particular to a submersible sewage pump. Background Art

[0002] Submersible sewage pump is a combination of a pump body and a motor. It is a pump product that can be submerged in liquid to work. It has the advantages of small footprint, compact structure, and good sewage discharge effect. It is widely used in municipal sewage projects, light industry, slurry and other industries.

[0003] However, there are still the following problems in an existing submersible sewage pump:

[0004] In a stable submersible pump with publication number CN209943172U, a driving gear, a driven gear and a gear ring are installed inside the main body of the submersible pump, and the output shaft rotates with the gear ring through the driving gear and the driven gear, thereby improving the stability of the gear ring rotating inside the main body of the submersible pump. A limiting soft brush installed on the outer surface of the gear ring contacts the inner surface of the first partition net, thereby increasing the convenience of the limiting soft brush in brushing the surface of the first partition net. However, when the pump brushes the first partition net with a filtering effect, since the pump body is always in a working state, the impurities will always be adsorbed on the outside of the first partition net, making it inconvenient to scrape off the impurities. At the same time, after the pump body is installed underwater, it will tilt with the inclination of the ground. When the pump body is in a tilted state, it is easy to cause the unit to vibrate due to uneven force, affecting the normal operation of the pump body.

[0005] So we proposed a submersible sewage pump to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a submersible sewage pump to solve the problem raised by the above background technology that when the submersible sewage pumps currently on the market are in use, impurities are easily adsorbed on the outside of the filter screen and are inconvenient to scrape off, and the pumps are easily affected by the ground and tilt, resulting in uneven force and causing vibration of the unit to affect its operation.

[0007] To achieve the above object, the present invention provides the following technical solution: a submersible sewage pump, comprising a motor assembly, a pump body and a filter screen, wherein the pump body is installed at the lower end of the motor assembly, and the filter screen capable of filtering sewage impurities is installed at the lower end of the pump body;

[0008] A fixed collar, which is sleeved and fixed on the outer side of the lower end of the pump body;

[0009] Also included are:

[0010] The bottom plate is fixed on the bottom of the sewage, and a limiting sleeve is fixed on the upper end of the bottom plate, and a limiting rod is slidably arranged inside the upper end of the limiting sleeve, and the upper end movable shaft of the limiting rod is installed inside the lower end of the fixing collar;

[0011] The impeller, the upper end of which is connected to the output end of the motor assembly, and the impeller is located inside the through pipe, and the through pipe is fixed inside the filter screen, and a filter cover with a secondary filtering function is fixed outside the upper end of the through pipe, and the filter cover is sleeved with a bearing and installed outside the output end of the motor assembly, and the lower end of the through pipe is fixed to the middle of the upper end of the bottom plate;

[0012] Two guide rods are symmetrically mounted on the left and right sides of the filter screen, and the two guide rods are jointly sleeved with a guide plate to limit the movement of the guide plate;

[0013] A fixed plate, which is fixedly installed inside the limiting sleeve, and a turntable is fitted below the fixed plate, and the turntable is movably installed inside the limiting sleeve, and through holes are opened on the upper and lower sides of the fixed plate and the turntable;

[0014] A vertical rod is installed at the lower end of the fixed sleeve ring, and a working disc is sleeved on the outer side of the vertical rod, and a driving magnetic ring is installed on the inner side of the working disc, and a brush plate that fits the outer wall of the filter is installed in the middle of the driving magnetic ring.

[0015] Preferably, a water outlet is provided at the upper end of the base plate, and the water outlet is located inside the lower end of the limiting sleeve, and the water outlet is communicated with the through pipe, so that when the impeller rotates inside the through pipe, water can be forced to enter the interior of the limiting sleeve through the through pipe and the water outlet, and impact the limiting rod installed on the upper end of the limiting sleeve, driving the limiting rod to move upward.

[0016] Preferably, the outer side and the inner side of the limiting sleeve are respectively hot-melt-connected with the first airbag and the second airbag, and the outer side of the first airbag is installed with an anti-breakage mesh cover, and one end of the second airbag is fitted with an extension block, and the extension block is fixedly installed on the outer side of the turntable, so that when the second airbag is inflated, it can be squeezed toward the extension block, thereby driving the turntable to rotate.

[0017] Preferably, the first airbag and the second airbag are respectively distributed at equal angles with respect to the center of the base plate and the turntable, and the first airbag and the second airbag are connected to each other, so that under the action of the first airbags distributed at equal angles, when the whole is in a tilted state, the first airbag at a lower position is subjected to the greatest pressure, and thus the corresponding second airbag will expand to its maximum state, causing the overlapping area of ​​the two through holes to be maximized, and then under a certain time and the same water pressure, the amount of liquid passing through will be maximum, and then the corresponding limit rod will move up the maximum distance, thereby driving the whole to be tilted upward, causing the whole to be in a balanced state.

[0018] Preferably, a passive magnetic ring is installed on the outer side of the guide plate, and a blocking plate that fits against the inner wall of the filter is installed in the middle of the passive magnetic ring, and the magnetic properties of the passive magnetic ring are opposite to those of the driving magnetic ring, so that when the driving magnetic ring moves, the magnetic relationship between the driving magnetic ring and the passive magnetic ring can drive the blocking plate to block the mesh of the filter to be cleaned, thereby reducing the adsorption force of impurities there, thereby facilitating the cleaning operation.

[0019] Preferably, the interior of the working disc plate is connected to the limiting sleeve by a telescopic tube, and water spray outlets are provided at both upper and lower ends of the working disc plate, and a control panel is movably installed inside the working disc plate, so that when water flows inside the limiting sleeve, it can enter the working disc plate, and by controlling the opening and closing of the two water spray outlets, the up and down movement of the working disc plate can be realized.

[0020] Preferably, closing plates are installed at both upper and lower ends of the control panel, and the two closing plates are respectively located on both sides of the control panel, and second magnets are installed at the ends of the closing plates, so that the control panel can use the two closing plates to close the upper and lower water outlets respectively.

[0021] Preferably, the second magnet has the same magnetic properties as the first magnet, and the two first magnets are respectively installed at the upper and lower ends of the side of the vertical rod, so that when the second magnet is opposite to the first magnet, it can drive the control plate to rotate, causing the closing plate to cover or open the water outlet.

[0022] Preferably, a connecting limit block is slidably arranged on the side of the control panel, and the middle part of the connecting limit block is slidably arranged inside the working disk plate, and the connecting limit block is slidably arranged on the outer side of the vertical rod up and down, so that under the action of the connecting limit block, the control panel can move up and down synchronously with the working disk plate.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the submersible sewage pump, through the cooperation of the limiting sleeve and the limiting rod, promotes the overall inclination without being affected by the ground, avoids the problem of vibration of the unit due to uneven force, and can enhance the cleaning effect of impurities outside the filter screen. The specific effects are as follows:

[0024] 1. A first airbag and a through pipe are provided, so that when the motor assembly drives the impeller inside the through pipe to rotate, the water will impact the limit rod through the through pipe, the water outlet, the turntable and the fixed plate, driving the limit rod to move upward. At the same time, because the water is also discharged, the limit rod will be displaced to a certain height. When the whole is in a state of tilting to the right, the pressure on each first airbag from left to right will change from low to high. Since the first airbag and the second airbag are interconnected, the expansion size of the corresponding second airbag changes from small to large, so that the turntable on the far right will rotate to the maximum angle, that is, the overlapping area of ​​the two through holes is the largest state, so that the amount of water passing through will be the largest under the action of a certain time and the same water pressure, which can push the limit rod on the far right to the highest position. Therefore, when the whole is in a state of tilting to the right, because the limit rod on the right moves up the longest distance, the whole can be balanced and adjusted to the left, that is, the whole can be tilted without being affected by the ground, ensuring the normal operation of the whole;

[0025] 2. A working disc and a water spray port are provided, so that after the water impacts the limit rod, it can enter the interior of the working disc through the hose, and then be discharged outward from the water spray port. During the spraying and discharging process, the working disc can be driven to move on the outside of the vertical rod, and the two closing plates installed on the control panel can be used to respectively realize the blocking operation of the upper and lower water spray ports, and then when the lower water spray port is closed and the upper water spray port is open, the working disc can move downward, and when the lower water spray port is open and the upper water spray port is closed, the working disc can move upward, and then the working disc can drive the brush plate to move up and down on the outside of the filter.

[0026] 3. A blocking plate and a passive magnetic ring are provided, so that when the working disc moves up and down, the driving magnetic ring and the brush plate can be moved up and down synchronously. Since the magnetic properties of the driving magnetic ring and the passive magnetic ring are opposite, under the action of the opposite magnetic properties, the passive magnetic ring can drive the blocking plate to move synchronously with the brush plate, thereby blocking the mesh of the filter. At this time, the impurities adhered to the outside of the mesh will not be affected by the internal suction force, and the brush plate will be convenient for cleaning the impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall front section structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the front cross-section structure of the filter screen of the present invention;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the passive magnetic ring of the present invention from a side view;

[0030] Figure 4 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0031] Figure 5 It is a schematic diagram of the top cross-sectional structure of the bottom plate of the present invention;

[0032] Figure 6 It is a schematic diagram of the top-sectional structure of the limiting sleeve of the present invention;

[0033] Figure 7 For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of the control panel of the present invention from a side view.

[0035] In the figure: 1. motor assembly; 2. pump body; 3. filter screen; 4. bottom plate; 5. limit sleeve; 6. limit rod; 7. fixed collar; 8. impeller; 9. through pipe; 10. guide rod; 11. guide plate; 12. passive magnetic ring; 13. blocking plate; 14. water outlet; 15. fixed plate; 16. turntable; 17. through hole; 18. extension block; 19. second air bag; 20. first air bag; 21. vertical rod; 22. first magnet; 23. working disc plate; 24. water outlet; 25. control board; 26. closing plate; 27. second magnet; 28. connecting limit block; 29. ​​driving magnetic ring; 30. brush plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-8The present invention provides a technical solution: a submersible sewage pump, comprising a motor assembly 1, a pump body 2 and a filter screen 3, the lower end of the motor assembly 1 is equipped with a pump body 2, and the lower end of the pump body 2 is equipped with a filter screen 3 that can filter sewage impurities; a fixed collar 7, which is sleeved and fixed on the outer side of the lower end of the pump body 2; it also includes: a bottom plate 4, which is fixed on the bottom ground of the sewage, and the upper end of the bottom plate 4 is fixed with a limiting sleeve 5, and the upper end of the limiting sleeve 5 is internally engaged and slidably provided with a limiting rod 6, and the upper end movable shaft of the limiting rod 6 is installed inside the lower end of the fixed collar 7; an impeller 8, the upper end of which is connected to the output end of the motor assembly 1, and the impeller 8 is located inside the through pipe 9, and the through pipe 9 is fixed inside the filter screen 3, and a filter cover with a secondary filtering effect is fixed on the outer side of the upper end of the through pipe 9, and the filter cover sleeve bearing is installed on the outer side of the output end of the motor assembly 1, and the through pipe 9 The lower end is fixed to the middle part of the upper end of the bottom plate 4; the fixed plate 15 is fixedly installed inside the limiting sleeve 5, and a turntable 16 is fitted below the fixed plate 15, and the turntable 16 is movably installed inside the limiting sleeve 5, and the fixed plate 15 and the turntable 16 are respectively provided with through holes 17 at the upper and lower ends; a water outlet 14 is provided at the upper end of the bottom plate 4, and the water outlet 14 is located inside the lower end of the limiting sleeve 5, and the water outlet 14 is interconnected with the through pipe 9; the outer side and the inner side of the limiting sleeve 5 are respectively hot-melt connected with the first air bag 20 and the second air bag 19, and the outer side of the first air bag 20 is installed with an anti-breakage mesh cover, and one end of the second air bag 19 is fitted with an extension block 18, and the extension block 18 is fixedly installed on the outer side of the turntable 16; the first air bag 20 and the second air bag 19 are respectively distributed at equal angles with respect to the center of the bottom plate 4 and the turntable 16, and the first air bag 20 and the second air bag 19 are interconnected;

[0038] Combination Figure 1-2 and Figure 3-6As shown, after placing the whole below the liquid surface, fix the bottom plate 4 on the ground, then start the motor assembly 1, the motor assembly 1 drives the pump body 2 to pump water and discharge sewage, and uses the impeller 8 to force part of the water to enter the interior of the limiting sleeve 5 through the through pipe 9. When the whole is in a tilted state, the first airbags 20 at different heights will be subjected to different pressure forces. Since the first airbag 20 and the second airbag 19 are interconnected, the second airbag 19 will expand, and the rotating disk 16 can be driven to rotate inside the limiting sleeve 5 by the fitting effect with the extension block 18, so that the through hole 17 opened by the rotating disk 16 coincides with the through hole 17 opened by the fixing plate 15, and then after the water enters the interior of the limiting sleeve 5, it can pass through the two through holes 17 to the limiting rod 6 The impact is carried out to drive the limit rod 6 to move upward. Since the water is then discharged from the working disc 23, the limit rod 6 will be in a stable state after moving up a certain height, and the first airbag 20 at the lowest point will be subjected to the maximum pressure, and then the corresponding second airbag 19 will expand to the maximum state, so that the second airbag 19 can drive the overlap area of ​​the two through holes 17 to reach the maximum, and then within a certain period of time and under the same water pressure, the water passing through will be the largest, which can drive the corresponding limit rod 6 to move to the maximum height, thereby driving the whole to tilt in height, and then can promote the whole to a balanced state, avoid being affected by the ground and appearing in a tilted state, and prevent the unit from vibrating due to uneven force, affecting the normal operation of the pump body;

[0039] The vertical rod 21 is mounted on the lower end of the fixed collar 7, and a working disc 23 is sleeved on the outer side of the vertical rod 21, and a driving magnetic ring 29 is installed on the inner side of the working disc 23, and a brush plate 30 that fits the outer wall of the filter screen 3 is installed in the middle of the driving magnetic ring 29; the inside of the working disc 23 is connected to the limiting sleeve 5 through a telescopic tube, and water spray ports 24 are opened at the upper and lower ends of the working disc 23, and a control board 25 is movably installed inside the working disc 23; the upper and lower ends of the control board 25 are installed A closing plate 26 is installed, and the two closing plates 26 are respectively located on both sides of the control plate 25, and a second magnet 27 is installed at the end of the closing plate 26; the second magnet 27 has the same magnetic properties as the first magnet 22, and the two first magnets 22 are respectively installed at the upper and lower ends of the side of the vertical rod 21; a connecting limit block 28 is slidably provided on the side of the control plate 25, and the middle part of the connecting limit block 28 is slidably provided inside the working disk plate 23, and the connecting limit block 28 is slidably provided on the outer side of the vertical rod 21 in an upper and lower snap-fitting manner;

[0040] Combination Figure 1 and Figure 7-8As shown, when the water enters the interior of the working disc 23 from the limiting sleeve 5, when the water outlet 24 located at the top is open and the water outlet 24 located at the bottom is covered by the closing plate 26, the water will be discharged from the water outlet 24 located at the top. Under the action of the injection force, the working disc 23 will move in the opposite direction, and under the limiting action of the vertical rod 21, the working disc 23 will move downward. When it moves to the bottom, due to the magnetic field between the second magnet 27 installed on the closing plate 26 at the bottom and the first magnet 22, the working disc 23 will move downward. The properties are the same, so the control plate 25 can be driven to rotate as a whole, and then the water spray port 24 located at the bottom is opened, and the water spray port 24 located at the top will be in a state of being covered by the closing plate 26. Then, according to the above working principle, the working disc plate 23 will move upward, and then the second magnet 27 installed on the closing plate 26 at the top can drive the control plate 25 to rotate again through the magnetic effect of the first magnet 22, and so on, which can drive the driving magnetic ring 29 and the brush plate 30 installed on the working disc plate 23 to reciprocate up and down.

[0041] Two guide rods 10 are symmetrically mounted on the left and right sides of the filter screen 3, and the two guide rods 10 are jointly sleeved with a guide plate 11 to limit the movement of the guide plate 11; a passive magnetic ring 12 is mounted on the outer side of the guide plate 11, and a blocking plate 13 is mounted in the middle of the passive magnetic ring 12 to fit the inner wall of the filter screen 3, and the magnetic properties of the passive magnetic ring 12 are opposite to those of the driving magnetic ring 29;

[0042] Combination Figure 1-3 As shown, when the working disk plate 23 drives the driving magnetic ring 29 and the brush plate 30 to perform reciprocating up and down movements, the opposite magnetic effect between the driving magnetic ring 29 and the passive magnetic ring 12 can drive the passive magnetic ring 12, the guide plate 11 and the blocking plate 13 to perform synchronous movements, and then the blocking plate 13 can block the mesh of the filter screen 3 to be cleaned, so that the impurities there will not generate adsorption force, so that the brush plate 30 is convenient for cleaning the impurities and improving the cleaning force.

[0043] Working principle: When using this submersible sewage pump, Figure 1-8As shown, after placing the whole below the liquid surface, fix the bottom plate 4 on the ground, then start the motor assembly 1, the motor assembly 1 drives the pump body 2 to pump water and discharge sewage, and uses the impeller 8 to force part of the water to enter the interior of the limiting sleeve 5 through the through pipe 9. When the whole is in a tilted state, the first airbags 20 at different heights are subjected to different pressures. The first airbag 20 at the lowest point will be subjected to the maximum pressure, and then the corresponding second airbag 19 will expand to the maximum state, so that the overlap area of ​​the two through holes 17 is maximized, and then the water passing through is the largest, and then the impact force on the limiting rod 6 will be the largest, driving the limiting rod 6 at the lower position. The positioning rod 6 moves upward, and then the whole body will tilt upward to maintain balance. At the same time, water will enter the working disc 23 and be discharged from the water outlet 14. When the water outlet 24 located above is opened and the water outlet 24 located below is closed, it will drive the working disc 23 to move downward, otherwise it will move upward. At the same time, by utilizing the magnetic relationship between the driving magnetic ring 29 and the passive magnetic ring 12, the blocking plate 13 can block the mesh of the filter 3 to be cleaned, thereby reducing the adsorption force of impurities on the filter 3, so that the working disc 23 drives the brush plate 30 to scrape off the impurities on the filter 3, thereby improving the cleaning effect.

[0044] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A submersible sewage pump, comprising a motor assembly (1), a pump body (2) and a filter screen (3), wherein the pump body (2) is mounted at the lower end of the motor assembly (1), and the filter screen (3) capable of filtering sewage impurities is mounted at the lower end of the pump body (2); A fixed collar (7) which is sleeved and fixed on the outer side of the lower end of the pump body (2); It is characterized in that Also included are: A bottom plate (4) is fixed on the bottom surface of the sewage, and a limiting sleeve (5) is fixed on the upper end of the bottom plate (4), and a limiting rod (6) is slidably arranged inside the upper end of the limiting sleeve (5), and the upper end movable shaft of the limiting rod (6) is installed inside the lower end of the fixing collar (7); A water outlet (14) is provided at the upper end of the bottom plate (4), and the water outlet (14) is located inside the lower end of the limiting sleeve (5), and the water outlet (14) is in communication with the through pipe (9); The outer side and the inner side of the limiting sleeve (5) are respectively connected by hot-melt with a first airbag (20) and a second airbag (19), and an anti-breakage mesh cover is installed on the outer side of the first airbag (20), and an extension block (18) is fitted on one end of the second airbag (19), and the extension block (18) is fixedly installed on the outer side of the rotating disk (16); The first airbag (20) and the second airbag (19) are respectively distributed at equal angles with respect to the center of the bottom plate (4) and the rotating disk (16), and the first airbag (20) and the second airbag (19) are connected to each other; An impeller (8), the upper end of which is connected to the output end of the motor assembly (1), and the impeller (8) is located inside the through pipe (9), and the through pipe (9) is fixed inside the filter screen (3), and a filter cover with a secondary filtering function is fixed outside the upper end of the through pipe (9), and the filter cover is sleeved with a bearing and installed outside the output end of the motor assembly (1), and the lower end of the through pipe (9) is fixed to the middle of the upper end of the bottom plate (4); Two guide rods (10) are symmetrically mounted on the left and right sides of the filter screen (3), and the two guide rods (10) are jointly sleeved with a guide plate (11) to limit the movement of the guide plate (11); A fixed plate (15) is fixedly mounted inside the limiting sleeve (5), and a rotating disk (16) is disposed below the fixed plate (15), and the rotating disk (16) is movably mounted inside the limiting sleeve (5), and through holes (17) are provided on the upper and lower sides of the fixed plate (15) and the rotating disk (16) correspondingly; A vertical rod (21) is mounted on the lower end of the fixed collar (7), and a working disc (23) is sleeved on the outer side of the vertical rod (21), and a driving magnetic ring (29) is mounted on the inner side of the working disc (23), and a brush plate (30) is mounted in the middle of the driving magnetic ring (29) and is attached to the outer wall of the filter screen (3); The interior of the working disc (23) is connected to the limiting sleeve (5) via a telescopic tube, and water spray ports (24) are provided at both upper and lower ends of the working disc (23), and a control panel (25) is movably installed inside the working disc (23); The control plate (25) is provided with a closing plate (26) at both upper and lower ends, and the two closing plates (26) are respectively located on both sides of the control plate (25), and a second magnet (27) is installed at the end of the closing plate (26); The second magnet (27) has the same magnetic properties as the first magnet (22), and the two first magnets (22) are respectively mounted on the upper and lower ends of the side of the vertical rod (21).

2. A submersible sewage pump according to claim 1, characterized in that: A passive magnetic ring (12) is installed on the outer side of the guide plate (11), and a blocking plate (13) that is attached to the inner wall of the filter screen (3) is installed in the middle of the passive magnetic ring (12), and the magnetic properties of the passive magnetic ring (12) and the driving magnetic ring (29) are opposite.

3. A submersible sewage pump according to claim 1, characterized in that: A connecting limit block (28) is slidably disposed on the side of the control plate (25), and the middle of the connecting limit block (28) is slidably disposed inside the working plate (23), and the connecting limit block (28) is slidably disposed on the outside of the vertical rod (21) in an up-and-down snap-fit ​​manner.

Images