A slurry pump for sewage treatment

Abstract

This invention discloses a slurry pump for sewage treatment, comprising a casing, a gearbox, a rotating shaft, and an impeller. A cleaning component is provided on the outside of the rotating shaft, a detection component is provided on the right side of the casing, and a pressure regulating component is provided on the left side. The rotating ring of the cleaning component is sleeved on the rotating shaft and rotatably connected to the inner wall of the casing. Its outside is connected to an inclined plate via a connecting rod. The cleaning plate on the outside of the inclined plate is attached to the inner wall of the casing. The rotating ring has a groove that cooperates with a sliding groove in the rotating shaft. A second electromagnet, a second spring, and a magnetic block in the sliding groove control the rotation of the rotating ring. The detection component uses the meshing of a first gear and a second gear to drive a generator to generate electricity. The pressure regulating component, through components such as a rubber tube, a connecting flange, a balance bar, a vertical bar, an iron block in the internal groove, a moving rod, and a retaining ring, combined with the first electromagnet and the first spring, adjusts the flow area of ​​the rubber tube according to the sewage delivery rate to control the water pressure. This pump can automatically clean impurities and regulate water pressure according to the impeller power, reducing the probability of failure and the possibility of cavitation, and improving energy utilization efficiency and service life.

Description

Technical Field

[0001] This invention relates to the field of slurry pump technology, specifically a slurry pump for wastewater treatment. Background Technology

[0002] A slurry pump is a machine that increases the energy of a solid-liquid mixture by using centrifugal force (the rotation of the pump impeller). It can convert electrical energy into the kinetic and potential energy of the medium, thereby realizing the transportation of solid-liquid mixtures.

[0003] If the slurry pump stops or the flow rate is too low during operation, solid particles in the sewage may settle at the bottom of the pump body or in low-lying areas of the flow channel. These settled particles will hinder the normal flow of fluid, increase the difficulty of starting up, and easily cause mechanical failures.

[0004] When the inlet pressure of a slurry pump is too low, causing the absolute pressure of the liquid to be lower than the saturated vapor pressure at that temperature, the liquid will vaporize and form bubbles. These bubbles will rapidly burst after entering the high-pressure zone with the liquid, generating strong shock waves. These shock waves will impact the impeller and flow channel surfaces of the pump, causing fatigue spalling of the surface material, resulting in pitting and honeycomb-like damage. Cavitation not only reduces the performance of the pump but also generates vibration and noise, affecting the normal operation of the pump and the working environment.

[0005] Therefore, the present invention provides a slurry pump for sewage treatment to solve the above-mentioned problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a slurry pump for wastewater treatment, which solves the aforementioned problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a slurry pump for sewage treatment, comprising a housing and a gearbox. A rotating shaft is rotatably connected inside the housing. An impeller is fixedly mounted on the outer side of the rotating shaft. A cleaning assembly is provided on the outer side of the rotating shaft. A detection assembly is provided on the right side of the housing, and a pressure regulating assembly is provided on the left side of the housing. The cleaning assembly includes a rotating ring, which is sleeved on the outer side of the rotating shaft and rotatably connected to the inner wall of the housing. A connecting rod is fixedly mounted on the outer side of the rotating ring. An inclined plate is fixedly mounted on the outer side of the connecting rod. A cleaning plate is fixedly mounted on the outer side of the inclined plate and adheres to the inner wall of the housing. A slot is formed inside the rotating ring, and a sliding groove is formed inside the rotating shaft. A second electromagnet is fixedly mounted inside the sliding groove, and a second spring is fixedly mounted inside the second electromagnet. A magnet is fixedly mounted on the outer end of the second spring, and the magnet is slidably connected within the slot and the sliding groove.

[0008] Preferably, the cleaning plate, the inclined plate, and the connecting rod are located on the right side of the impeller, the cleaning plate is attached to the inner wall of the outer casing near the outer side, and the inclined edge of the inclined plate faces the rotation direction of the impeller.

[0009] Preferably, the output end of the gearbox is fixedly connected to the rotating shaft, and an outlet is fixedly installed on the top of the housing, the outlet communicating with the interior of the housing.

[0010] Preferably, the detection component includes a support plate, which is fixedly installed on the side of the gearbox. An adjusting block is slidably connected to the top of the support plate, and a generator is fixedly installed on the top of the adjusting block. A second gear is fixedly installed on the outer side of the rotating shaft of the generator, and a first gear is fixedly installed on the outer side of the rotating shaft. The first gear and the second gear mesh with each other.

[0011] Preferably, an electric actuator is fixedly installed on the top of the support plate, and the output end of the electric actuator is fixedly installed on the side of the adjusting block.

[0012] Preferably, the generator and the second electromagnet are electrically connected via an inverter, and the magnetic poles of the second electromagnet and the magnet block are opposite in name.

[0013] Preferably, the pressure regulating assembly includes a rubber tube, which is fixedly installed on the left side of the housing and communicates with the interior of the housing. A connecting flange is fixedly installed on the outer side of the rubber tube.

[0014] Preferably: a balance bar is fixedly installed between the connecting flange and the outer shell, a vertical bar is fixedly installed at the outer end of the balance bar, an internal groove is opened inside the balance bar and the vertical bar, an iron block is slidably connected inside the internal groove, a moving rod is fixedly installed at the inner end of the iron block, a retaining ring is fixedly installed at the inner end of the moving rod, the retaining ring is attached to the outer side of the rubber tube, and a first spring is fixedly installed at the outer end of the iron block.

[0015] Preferably, a first electromagnet is fixedly installed on the inner end of the internal slot, the outer end of the first spring is fixedly installed on the side of the first electromagnet, and the first electromagnet is electrically connected to the generator through an inverter.

[0016] Beneficial effects

[0017] This invention provides a slurry pump for wastewater treatment. Compared with the prior art, it has the following advantages:

[0018] 1. In this slurry pump for wastewater treatment, when the impeller output power is low, indicating a potentially large amount of sediment inside the pump, the cleaning assembly automatically activates. At this time, because the current generated by the generator driven by the rotating shaft is relatively small, the magnetic force of the second electromagnet is insufficient to overcome the spring force of the second spring. The magnet inserts into the slot, thereby driving the rotating ring, connecting rod, inclined plate, and cleaning plate to rotate, effectively cleaning the particulate impurities deposited at the bottom of the outer casing. This timely removal of accumulated impurities inside the pump reduces the probability of mechanical failures caused by impurity buildup.

[0019] 2. When the impeller of this slurry pump for sewage treatment has a large operating power, which means that there is little sediment in the pump and no need for cleaning, the generator generates a large current to enhance the magnetic force of the second electromagnet, which moves the magnet block out of the slot. The rotating ring no longer rotates with the shaft, which effectively reduces the rotational resistance of the shaft, reduces unnecessary energy loss, improves energy utilization efficiency, and helps to reduce the operating cost of sewage treatment.

[0020] 3. This slurry pump for wastewater treatment features a pressure regulating component that automatically adjusts the flow area of ​​the rubber hose to control water pressure based on the wastewater delivery rate. When the delivery rate is low and cavitation is prone to occur, the low output power of the impeller leads to a slow shaft rotation speed. The small current generated by the generator weakens the magnetic force of the first electromagnet, causing the iron block to move inward under the action of the first spring. This causes the retaining ring to squeeze the rubber hose, reducing the flow area and thus increasing the water pressure at the same flow rate. This effectively reduces the probability of cavitation, protects key components such as the impeller and casing inside the pump body from cavitation corrosion, and extends the service life of the slurry pump. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a perspective view of the external structure of the present invention;

[0023] Figure 2 This is a perspective view of the back structure of the present invention;

[0024] Figure 3 This is the invention Figure 2 Enlarged view of the structure at point A in the middle;

[0025] Figure 4 This is a side perspective view of the present invention;

[0026] Figure 5 This is a cross-sectional view of the internal structure of the outer shell of the present invention;

[0027] Figure 6 This is a cross-sectional view of the overall structure of the present invention;

[0028] Figure 7 This is the invention Figure 6 Enlarged view of the B-structure;

[0029] Figure 8 This is the invention Figure 6 Enlarged view of the C-structure.

[0030] In the diagram: 1. Outer shell; 2. Detection assembly; 21. First gear; 22. Second gear; 23. Generator; 24. Adjusting block; 25. Electric actuator; 26. Support plate; 3. Pressure regulating assembly; 31. Rubber hose; 32. Connecting flange; 33. Balance bar; 34. Vertical bar; 35. Snap ring; 36. Moving rod; 37. Internal groove; 38. First electromagnet; 39. First spring; 310. Iron block; 4. Cleaning assembly; 41. Cleaning plate; 42. Inclined plate; 43. Connecting rod; 44. Rotary ring; 45. Snap groove; 46. Slide groove; 47. Second electromagnet; 48. Second spring; 49. Magnetic block; 5. Outlet; 6. Gearbox; 7. Rotating shaft; 8. Impeller. Detailed Implementation

[0031] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0032] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] Reference Figures 1 to 8This application provides a slurry pump for sewage treatment, including a housing 1 and a gearbox 6. A rotating shaft 7 is rotatably connected inside the housing 1. An impeller 8 is fixedly mounted on the outer side of the rotating shaft 7. A cleaning assembly 4 is disposed on the outer side of the rotating shaft 7. A detection assembly 2 is disposed on the right side of the housing 1, and a pressure regulating assembly 3 is disposed on the left side of the housing 1. The cleaning assembly 4 includes a rotating ring 44, which is sleeved on the outer side of the rotating shaft 7 and rotatably connected to the inner wall of the housing 1. A connecting rod 43 is fixedly mounted on the outer side of the rotating ring 44. An inclined plate 42 is fixedly installed on the outer side of the connecting rod 43, and a cleaning plate 41 is fixedly installed on the outer side of the inclined plate 42. The cleaning plate 41 is attached to the inner wall of the outer casing 1. A slot 45 is opened inside the rotating ring 44, and a sliding groove 46 is opened inside the rotating shaft 7. A second electromagnet 47 is fixedly installed inside the sliding groove 46, and a second spring 48 is fixedly installed inside the second electromagnet 47. A magnet block 49 is fixedly installed on the outer end of the second spring 48, and the magnet block 49 is slidably connected inside the slot 45 and the sliding groove 46.

[0034] The cleaning plate 41, inclined plate 42, and connecting rod 43 are located on the right side of the impeller 8. The cleaning plate 41 is attached to the inner wall of the outer casing 1 near the outer side, and the inclined edge of the inclined plate 42 faces the rotation direction of the impeller 8. The output end of the gearbox 6 is fixedly connected to the rotating shaft 7. An outlet 5 is fixedly installed on the top of the outer casing 1, and the outlet 5 communicates with the interior of the outer casing 1. The detection assembly 2 includes a support plate 26, which is fixedly installed on the side of the gearbox 6. An adjusting block 24 is slidably connected to the top of the support plate 26. A generator 23 is fixedly installed on the top of the adjusting block 24. A second gear 22 is fixedly installed on the outer side of the rotating shaft of the generator 23, and a first gear 21 is fixedly installed on the outer side of the rotating shaft 7. The first gear 21 and the second gear 22 mesh with each other. An electric push rod 25 is fixedly installed on the top of the support plate 26, and the output end of the electric push rod 25 is fixedly installed on the side of the adjusting block 24. The generator 23 and the second electromagnet 47 are electrically connected through an inverter. The magnetic poles of the second electromagnet 47 and the magnet block 49 are opposite in name.

[0035] In this embodiment, when the mortar pump is in use, the gearbox 6 is connected to the motor. The motor and gearbox 6 drive the rotating shaft 7 to rotate, which in turn drives the impeller 8 to rotate. The impeller 8 then transports the sewage. During transport, the rotating shaft 7 drives the first gear 21 to rotate, which in turn drives the second gear 22 to rotate. The second gear 22 then drives the generator 23 to generate electricity. The inverter converts the generated AC power into DC power, which is then supplied to the second electromagnet 47. The second electromagnet 47 generates magnetic force when energized. When the output power of the impeller 8 is low, the rotating shaft 7 rotates more slowly. At this time, the current generated by the generator 23 is smaller, and the magnetic force of the second electromagnet 47 is also smaller. The magnetic force is insufficient to overcome the elastic force of the second spring 48, so the magnet 49 will be inserted into the slot 45. When the magnet 49 is inserted into the slot 45, the rotation... While shaft 7 rotates, it drives the outer ring 44 to rotate via magnet block 49. The rotation of ring 44 drives the outer connecting rod 43, inclined plate 42, and cleaning plate 41 to rotate. The cleaning plate 41 and inclined plate 42 can clean the particulate impurities deposited at the bottom of the inner shell 1, thereby reducing the probability of mechanical failure. When the impeller 8 operates at a high power, there is less sediment inside the outer shell 1, so there is no need to clean it with cleaning plate 41. At this time, the generator 23 rotates at a high speed and generates a large current. The magnetic force of the second electromagnet 47 is large. The large magnetic force can overcome the elastic force of the second spring 48 and move magnet block 49 out of the slot 45. After it is moved out, the ring 44 no longer rotates with shaft 7. When there is no need to clean the sediment, the resistance of shaft 7 can be reduced, and the power of impeller 8 can be guaranteed.

[0036] Reference Figures 1 to 8 In one aspect of this embodiment, the pressure regulating assembly 3 includes a rubber tube 31, which is fixedly installed on the left side of the housing 1 and communicates with the interior of the housing 1. A connecting flange 32 is fixedly installed on the outer side of the rubber tube 31. A balance bar 33 is fixedly installed between the connecting flange 32 and the housing 1. A vertical bar 34 is fixedly installed at the outer end of the balance bar 33. An internal groove 37 is formed inside the balance bar 33 and the vertical bar 34. An iron block 310 is slidably connected inside the internal groove 37. A moving rod 36 is fixedly installed at the inner end of the iron block 310. A retaining ring 35 is fixedly installed at the inner end of the moving rod 36. The retaining ring 35 is attached to the outer side of the rubber tube 31. A first spring 39 is fixedly installed at the outer end of the iron block 310. A first electromagnet 38 is fixedly installed at the inner end of the internal groove 37. The outer end of the first spring 39 is fixedly installed on the side of the first electromagnet 38. The first electromagnet 38 is electrically connected to the generator 23 through an inverter.

[0037] In this embodiment, when sewage is transported, cavitation occurs at a low transport rate. At this time, because the impeller 8 has low output power, the shaft 7 rotates at a low speed. This low speed results in a low current generated by the generator 23, which in turn weakens the magnetic force generated by the first electromagnet 38. Consequently, the electromagnet 38's attraction to the iron block 310 is weak. At this time, the spring force of the first spring 39 is large, causing the iron block 310 to move inward under the influence of the spring force. Simultaneously, this moves the moving rod 36 and the retaining ring 35 inward. The inward movement of the retaining ring 35 compresses the rubber tube 31. After compression, the overall area available for sewage flow decreases, thus ensuring... At the same flow rate, the water pressure of the water flowing through the rubber tube 31 increases. By reducing the area of ​​the rubber tube 31, the water pressure can be increased, which can ensure that the probability of cavitation is reduced at low flow rates. When the overall flow rate is normal, the first electromagnet 38 can generate a large magnetic force. The large magnetic force can attract the iron block 310 to move outward, thereby moving the retaining ring 35 outward, so that the retaining ring 35 no longer squeezes the rubber tube 31, ensuring that the overall system can transport sewage normally. When the generator 23 is not needed, the adjusting block 24 can be moved outward by starting the electric push rod 25. The outward movement of the adjusting block 24 can separate the first gear 21 and the second gear 22, ensuring that the rotating shaft 7 no longer drives the generator 23 to rotate.

[0038] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0039] Working principle: When the mortar pump is in use, the gearbox 6 is connected to the motor. The motor and gearbox 6 drive the rotating shaft 7 to rotate, which in turn drives the impeller 8 to rotate. The impeller 8 then transports the sewage. During transport, the rotation of the rotating shaft 7 drives the first gear 21 to rotate, which in turn drives the second gear 22 to rotate. The rotation of the second gear 22 drives the generator 23 to generate electricity. The inverter converts the generated AC power into DC power, which is then sent to the second electromagnet 47. The second electromagnet 47 generates magnetic force when energized. When the output power of the impeller 8 is low, the rotation speed of the rotating shaft 7 is slower, and the current generated by the generator 23 is lower. When the magnetic force of the second electromagnet 47 is small, it cannot overcome the elastic force of the second spring 48. Therefore, the magnet block 49 will be inserted into the slot 45. When the magnet block 49 is inserted into the slot 45, the rotating shaft 7 will rotate, and the outer rotating ring 44 will be rotated through the magnet block 49. The rotation of the rotating ring 44 can drive the outer connecting rod 43, the inclined plate 42 and the cleaning plate 41 to rotate. The cleaning plate 41 and the inclined plate 42 can clean the particulate impurities deposited at the bottom of the inner shell 1, thereby reducing the probability of mechanical failure. When the impeller 8 operates at a high power, less sediment is generated inside the inner shell 1, and cleaning is not required. Plate 41 is cleaned, and at this time, the generator 23 rotates at a relatively high speed, generating a large current. The magnetic force of the second electromagnet 47 is also large. This large magnetic force can overcome the elastic force of the second spring 48, causing the magnet 49 to move out of the slot 45. After it moves out, the rotating ring 44 no longer rotates with the rotating shaft 7. This ensures that when cleaning of the sediment is not required, the resistance of the rotating shaft 7 can be reduced, ensuring the power of the impeller 8. When sewage is being transported, cavitation will occur when the transport rate is low. At this time, because the output power of the impeller 8 is small, the rotation speed of the rotating shaft 7 is small. The smaller the rotation speed of the rotating shaft 7, the smaller the current generated by the generator 23. The smaller current results in a smaller magnetic force generated by the first electromagnet 38, and a smaller attraction force of the first electromagnet 38 to the iron block 310. At this time, the elastic force of the first spring 39 is larger. Therefore, the iron block 310 will move inward under the elastic force of the first spring 39, and simultaneously drive the moving rod 36 and the retaining ring 35 to move inward. The inward movement of the retaining ring 35 can squeeze the rubber tube 31. After the rubber tube 31 is squeezed, the overall area available for sewage flow becomes smaller, thereby ensuring that the water pressure of the water flowing through the rubber tube 31 increases at the same flow rate. By reducing the area of ​​the rubber tube 31 to increase the water pressure, the probability of cavitation can be reduced at low flow rates.When the overall flow rate is normal, the first electromagnet 38 can generate a large magnetic force. This large magnetic force can attract the iron block 310 to move outward, thereby moving the retaining ring 35 outward. This prevents the retaining ring 35 from squeezing the rubber tube 31, ensuring normal sewage transport. Furthermore, when the generator 23 is not needed, the electric actuator 25 can be activated to move the adjusting block 24 outward. Moving the adjusting block 24 outward separates the first gear 21 and the second gear 22, ensuring that the rotating shaft 7 no longer drives the generator 23 to rotate.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A slurry pump for sewage treatment, comprising a housing (1) and a gearbox (6), characterized in that: The housing (1) is rotatably connected to a rotating shaft (7). An impeller (8) is fixedly installed on the outside of the rotating shaft (7). A cleaning component (4) is provided on the outside of the rotating shaft (7). A detection component (2) is provided on the right side of the housing (1). A pressure regulating component (3) is provided on the left side of the housing (1). The cleaning component (4) includes a rotating ring (44). The rotating ring (44) is sleeved on the outside of the rotating shaft (7). The rotating ring (44) is rotatably connected to the inner wall of the housing (1). A connecting rod (43) is fixedly installed on the outside of the rotating ring (44). A connecting rod (43) is fixedly installed on the outside of the connecting rod (43). There is an inclined plate (42), and a cleaning plate (41) is fixedly installed on the outer side of the inclined plate (42). The cleaning plate (41) is attached to the inner wall of the outer shell (1). A slot (45) is opened inside the rotating ring (44). A sliding groove (46) is opened inside the rotating shaft (7). A second electromagnet (47) is fixedly installed inside the sliding groove (46). A second spring (48) is fixedly installed inside the second electromagnet (47). A magnet block (49) is fixedly installed on the outer end of the second spring (48). The magnet block (49) is slidably connected inside the slot (45) and the sliding groove (46). The detection component (2) includes a support plate (26), which is fixedly installed on the side of the gearbox (6). An adjustment block (24) is slidably connected to the top of the support plate (26). A generator (23) is fixedly installed on the top of the adjustment block (24). A second gear (22) is fixedly installed on the outside of the rotating shaft of the generator (23). A first gear (21) is fixedly installed on the outside of the rotating shaft (7). The first gear (21) and the second gear (22) mesh with each other. The generator (23) is electrically connected to the second electromagnet (47) via an inverter. The magnetic poles of the second electromagnet (47) and the magnet block (49) are opposite in name.

2. A slurry pump for sewage treatment according to claim 1, characterized in that: The cleaning plate (41), the inclined plate (42) and the connecting rod (43) are located on the right side of the impeller (8). The cleaning plate (41) is attached to the inner wall of the outer casing (1) near the outer side, and the inclined edge of the inclined plate (42) faces the rotation direction of the impeller (8).

3. A slurry pump for sewage treatment according to claim 1, characterized in that: The output end of the gearbox (6) is fixedly connected to the rotating shaft (7), and an outlet (5) is fixedly installed on the top of the housing (1), and the outlet (5) is connected to the inside of the housing (1).

4. A slurry pump for sewage treatment according to claim 3, characterized in that: An electric actuator (25) is fixedly installed on the top of the support plate (26), and the output end of the electric actuator (25) is fixedly installed on the side of the adjusting block (24).

5. A slurry pump for wastewater treatment according to claim 1, characterized in that: The pressure regulating assembly (3) includes a rubber tube (31), which is fixedly installed on the left side of the housing (1). The rubber tube (31) is connected to the inside of the housing (1), and a connecting flange (32) is fixedly installed on the outside of the rubber tube (31).

6. A slurry pump for sewage treatment according to claim 5, characterized in that: A balance bar (33) is fixedly installed between the connecting flange (32) and the outer shell (1). A vertical rod (34) is fixedly installed at the outer end of the balance bar (33). An internal groove (37) is opened inside the balance bar (33) and the vertical rod (34). An iron block (310) is slidably connected inside the internal groove (37). A moving rod (36) is fixedly installed at the inner end of the iron block (310). A retaining ring (35) is fixedly installed at the inner end of the moving rod (36). The retaining ring (35) is attached to the outside of the rubber tube (31). A first spring (39) is fixedly installed at the outer end of the iron block (310).

7. A slurry pump for wastewater treatment according to claim 6, characterized in that: The inner end of the internal slot (37) is fixedly installed with a first electromagnet (38), and the outer end of the first spring (39) is fixedly installed on the side of the first electromagnet (38). The first electromagnet (38) is electrically connected to the generator (23) through an inverter.

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