Drain impeller with annular grooves

Abstract

A drainage impeller with an annular groove comprises: an axis, a plurality of main blades extending radially outward in the form of vertical walls; and an annular bottom plate, which is arranged at the bottom of the plurality of main blades, and the annular bottom plate is separated from the axis by a predetermined distance, so that a plurality of hollow portions are formed between the axis, the plurality of main blades and the annular bottom plate, and the annular bottom plate has a plurality of sub-blades extending radially outward along the axis; wherein the annular bottom plate extends an annular wall upward along its outer edge, and then extends a shoulder plate outward at the top edge of the annular wall, and the shoulder plate has a top surface facing upward, and an outer annular wall extends downward from the outer edge of the shoulder plate, and a retaining wall extends upward from the outer edge of the shoulder plate; in addition, the outer annular wall, the shoulder plate and the annular wall are combined to form an annular groove with an opening facing downward.

Description

Technical Field

[0001] The present invention relates to a drainage device, in particular to a drainage impeller with an annular groove arranged in a drainage pump. Background Art

[0002] Patent No. M584406 from Taiwan, China, discloses a drainage impeller with a balancing hole disposed in a drainage pump. In this case, a plurality of balancing holes are disposed on the drainage impeller, which can effectively discharge the bubbles behind the blades in the water so that the bubbles will not remain behind the blades, thereby significantly reducing the noise and vibration of the drainage impeller during operation.

[0003] In actual use, the aforementioned prior art, at the beginning of the drainage stage, that is, when the drainage impeller just starts to operate and sucks water into the drainage pump, the water will quickly pass through the multiple hollow parts in the center of the drainage impeller and flow to the annular bottom plate of the drainage impeller, and the water level on the annular bottom plate will continue to rise rapidly. Then, due to the centrifugal force of the drainage impeller, the water will flow to the annular wall and pass over the annular wall to hit the inner wall of the drainage pump, causing vibration and noise. This problem needs to be improved. Summary of the invention

[0004] The main problem of the above-mentioned prior art is that the drainage impeller cannot effectively respond to the rapidly rising water level at the early stage of the drainage stage, and can only allow the drainage impeller to hit the inner wall of the drainage pump according to the operation of the drainage impeller, thereby still causing vibration and noise problems. The present invention proposes a technical means to solve this problem.

[0005] Based on the above, the present invention proposes a drainage impeller with an annular groove, comprising: an axis with a connecting groove at the top end for connecting to a driving shaft and being driven to rotate, the axis radially extending outwardly with a plurality of main blades in the form of vertical walls; and an annular bottom plate, arranged at the bottom of the plurality of main blades, and the annular bottom plate is separated from the axis by a predetermined distance, so that a plurality of hollow portions are formed between the axis, the plurality of main blades and the annular bottom plate, and the annular bottom plate has a plurality of sub-blades extending radially outwardly along the axis; wherein the annular bottom plate extends an annular wall upward along its outer edge, and then extends a shoulder plate outward at the top edge of the annular wall, and the shoulder plate has a top surface facing upward, and an outer annular wall extends downward from the outer edge of the shoulder plate, and a retaining wall extends upward from the outer edge of the shoulder plate; in addition, the outer annular wall, the shoulder plate and the annular wall are combined to form an annular groove with an opening facing downward.

[0006] Therefore, the present invention, through the cooperation of the baffle wall and the shoulder plate, and the setting of the annular groove, can effectively reduce or even eliminate the noise and vibration that may be caused by water hitting the inner wall of the drainage pump during the rapid increase of the water level in the initial stage of drainage, and effectively solves the problems faced by the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a three-dimensional diagram of a first preferred embodiment of the present invention.

[0008] Figure 2 Another stereoscopic view of the first preferred embodiment of the present invention is shown as viewed from the bottom.

[0009] Figure 3 It is a top view of the first preferred embodiment of the present invention.

[0010] Figure 4 For along Figure 3 Sectional view along line 4-4.

[0011] Figure 5 It is a schematic assembly diagram of the first preferred embodiment of the present invention.

[0012] Figure 6 This is an operating state diagram of the first preferred embodiment of the present invention, showing the state of low water level after water enters.

[0013] Figure 7 This is another operating state diagram of the first preferred embodiment of the present invention, showing the state of high water level after water enters.

[0014] Figure 8 This is another operating state diagram of the first preferred embodiment of the present invention, showing the state of full water level after water enters.

[0015] Fig. 9 It is a three-dimensional diagram of a second preferred embodiment of the present invention.

[0016] Fig.10 Another stereoscopic view of the second preferred embodiment of the present invention is shown as viewed from the bottom.

[0017] Fig.11 It is a three-dimensional diagram of a third preferred embodiment of the present invention.

[0018] Fig.12 Another stereoscopic view of the third preferred embodiment of the present invention, showing the state viewed from the bottom.

[0019] Wherein, the reference numerals are:

[0020] 10: Drainage impeller with annular groove

[0021] 11: Axis

[0022] 12: Connection slot

[0023] 14: Main blade

[0024] 21: Ring bottom plate

[0025] 22: Hollow part

[0026] 24: cotyledon

[0027] 26: Annular wall

[0028] 27: Shoulder Plate

[0029] 28: Outer ring wall

[0030] 281: Annular groove

[0031] 29: retaining wall

[0032] 90: Drainage Pump

[0033] 91:Water inlet

[0034] 92: Drainage outlet

[0035] 10': Drainage impeller with annular groove

[0036] 14': Main blade

[0037] 21': Ring bottom plate

[0038] 24': cotyledon

[0039] 27': Shoulder board

[0040] 28': Outer ring wall

[0041] 29': Block wall

[0042] 10”: Drain impeller with annular grooves

[0043] 11”: Axis

[0044] 14”: Main blade

[0045] 24”: sub-leaf

[0046] 27”: Shoulder Plate

[0047] 271”: Balance hole

[0048] 281”: Annular groove DETAILED DESCRIPTION

[0049] In order to explain the technical features of the present invention in detail, the following preferred embodiments are given with reference to the accompanying drawings, wherein:

[0050] like Figures 1 to 7 As shown, the first preferred embodiment of the present invention provides a drainage impeller 10 with an annular groove, which is mainly composed of an axis 11 and an annular bottom plate 21, wherein:

[0051] The shaft 11 has a connection groove 12 at its top end for connecting to a driving shaft (not shown) to be driven to rotate. A plurality of main blades 14 in the form of vertical walls extend radially outward from the shaft 11 .

[0052] The annular bottom plate 21 is disposed at the bottom of the plurality of main blades 14, and is separated from the axis 11 by a predetermined distance, so that a plurality of hollow portions 22 are formed between the axis 11, the plurality of main blades 14 and the annular bottom plate 21. The annular bottom plate 21 has a plurality of sub-blades 24 extending outwardly along the radial direction of the axis 11.

[0053] The annular bottom plate 21 has an annular wall 26 extending upward along its outer edge, and a shoulder plate 27 extending outward from the top edge of the annular wall 26. The shoulder plate 27 has a top surface facing upward, and an outer annular wall 28 extending downward from the outer edge of the shoulder plate 27, and a retaining wall 29 extending upward from the outer edge of the shoulder plate 27.

[0054] In addition, the outer annular wall 28 , the shoulder plate 27 and the annular wall 26 are combined to form an annular groove 281 with an opening facing downward.

[0055] In the first embodiment, the bottom edge of the outer annular wall 28 is substantially flush with the virtual plate body extending outward from the annular bottom plate 21, and the upper surface of the junction of the annular wall 26 and the shoulder plate 27 is in an arc shape. The top edge of the retaining wall 29 is undulating along the periphery of the annular bottom plate 21, and the bottom edge of the outer annular wall 28 is undulating along the periphery of the annular bottom plate 21, and the high point of the undulating top edge of the retaining wall 29 corresponds to the high point of the undulating bottom edge of the outer annular wall 28, and the low point also corresponds to the high point of the undulating bottom edge of the outer annular wall 28. Among the plurality of main blades 14 and the plurality of sub-blades 24, some of the blade top edges are higher than the top surface of the shoulder plate 27 and are flush with the top edge of the retaining wall 29.

[0056] The structure of the first embodiment has been described above, and the operation state of the first embodiment will be described next.

[0057] like Figure 5 As shown, before use, the drainage impeller 10 is assembled inside a drainage pump 90. The drainage pump 90 has a water inlet 91 at the bottom and a drainage outlet 92 at one side.

[0058] like Figure 6 As shown, at the beginning of drainage, the drainage impeller 10 is driven to start rotating, and water enters from the bottom of the drainage pump 90, and the water level is at a low water level.

[0059] like Figure 7As shown, as the drainage impeller 10 rotates, water is continuously sucked into the drainage pump 90, and the water level is continuously rising. Since the drainage has just begun and the water has just been sucked into the drainage pump 90, before the speeds of water inflow and water outflow have not yet reached a balanced state, the speed of water inflow will be greater than the speed of water outflow, which will cause the water level to continuously rise and be higher than the annular bottom plate 21, and enter through the multiple hollow portions 22 and flow onto the annular bottom plate 21, and due to the centrifugal force of the rotation of the drainage impeller 10, move to the annular wall 26 and be blocked, Figure 7 In the state of the middle, water will pass over the annular wall 26 and flow to the shoulder plate 27, and be blocked by the baffle 29. In this state, water higher than the annular wall 26 will not rush out of the drainage impeller 10 and directly hit the inner wall of the drainage pump 90, so no vibration or noise will be generated based on this point. At this time, water has begun to be discharged from the drainage port 92. Since the height of the annular bottom plate 21 and the shoulder plate 27 are different, the water forms different depths at these two positions, which can prevent the water from directly rushing over when flowing from the annular bottom plate 21 to the shoulder plate 27, thereby achieving the effect of slowing down the water. In addition, during the process of the water level rising, water and bubbles will also enter the annular groove 281 from the bottom of the annular bottom plate 21. The annular groove 281 plays the function of storing water and bubbles at this stage of water inflow, which can also reduce the chance of bubbles and water hitting the inner wall of the drainage pump 90, thereby reducing noise and vibration.

[0060] like Figure 8 As shown, after the drainage impeller 10 has been running for a period of time, the speeds of water inlet and outlet of the drainage pump 90 can reach a balance. At this time, the drainage pump 90 is almost full of water. At this time, there will be no problems of bubbles or water impact, and it will be in a stable drainage state without noise or vibration problems.

[0061] In the first embodiment, the top edge of the retaining wall 29 and the bottom edge of the outer ring wall 28 are wavy, which can slightly drive the water when the drainage impeller 10 rotates, thereby cooperating with the multiple main blades 14 and the multiple sub-blades 24 to drive the water to rotate in the drainage pump 90. In addition, if some of the multiple main blades 14 and the multiple sub-blades 24 are relatively high, they can drive the water in accordance with the height of the retaining wall 29.

[0062] As can be seen from the above, the present invention, through the cooperation of the baffle wall 29 and the shoulder plate 27, and the setting of the annular groove 281, can effectively reduce or even eliminate the noise and vibration that may be caused by water hitting the inner wall of the drainage pump 90 during the rapid increase of the water level in the initial stage of the drainage stage, and effectively solves the problems faced by the prior art.

[0063] like Figures 9 and 10As shown, the second preferred embodiment of the present invention provides a drainage impeller 10' with an annular groove, which is mainly similar to the first embodiment mentioned above, except that:

[0064] The top edge of the retaining wall 29' is horizontal along the periphery of the annular bottom plate 21', and the bottom edge of the outer annular wall 28' is horizontal along the periphery of the annular bottom plate 21', rather than being undulating as in the first embodiment.

[0065] The top surfaces of the plurality of main blades 14 ′ and the plurality of sub-blades 24 ′ are flush with the top surface of the shoulder plate 27 ′.

[0066] In the second embodiment, the top edge of the retaining wall 29' and the bottom edge of the outer ring wall 28' are horizontal, so that the water will not be driven when the drainage impeller 10' rotates, but the impact on the water can be reduced to a greater extent, which can produce the effect of reducing noise. In addition, the top surfaces of the plurality of main blades 14' and the plurality of sub-blades 24' are flush with the top surface of the shoulder plate 27', so that in addition to driving the water flow, the drainage impeller 10' can also make the interference with the water during rotation smaller than the aforementioned first embodiment, which can also produce the effect of reducing noise.

[0067] The rest of the structure and the effects that can be achieved in the second embodiment are similar to those of the first embodiment, and will not be described in detail again.

[0068] like Figure 11 to Figure 12 As shown, the third preferred embodiment of the present invention provides a drainage impeller 10" with an annular groove, which is mainly similar to the first embodiment mentioned above, except that:

[0069] The shoulder plate 27" is provided with a plurality of balancing holes 271", which are arranged at equal angles relative to the axis 11", and the plurality of balancing holes 271" are spatially connected with the annular groove 281". In addition, each of the balancing holes 271" is located at the end of a main blade 14" or a sub-blade 24".

[0070] The multiple balance holes 271" of the third embodiment can allow the water on the surface of the shoulder plate 27" to communicate with the water in the annular groove 281" during actual use, so as to balance the pressure on both sides, thereby reducing the vibration of the drainage impeller 10" that may be caused by the difference in upper and lower pressures during operation, and thus also reducing noise.

[0071] The rest of the structure and the effects that can be achieved in the third embodiment are similar to those of the first embodiment, and will not be described in detail again.

[0072] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims of the present invention.

Claims

1. A drainage impeller with an annular groove, comprising: An axis having a connection groove at the top thereof for connecting to a driving shaft to be driven to rotate, and a plurality of main blades in the form of vertical walls extending radially outward from the axis; and an annular bottom plate, disposed at the bottom of the plurality of main blades, and the annular bottom plate is separated from the axis by a predetermined distance, so that a plurality of hollow portions are formed between the axis, the plurality of main blades and the annular bottom plate, and the annular bottom plate has a plurality of sub-blades extending outwardly along the radial direction of the axis; Features: The annular bottom plate extends an annular wall upward along its outer edge, and a shoulder plate extends outward from the top edge of the annular wall, and the shoulder plate has a top surface facing upward, an outer annular wall extends downward from the outer edge of the shoulder plate, and a blocking wall extends upward from the outer edge of the shoulder plate; The outer annular wall, the shoulder plate and the annular wall are combined to form an annular groove with an opening facing downward.

2. The drainage impeller with annular grooves according to claim 1, wherein: The bottom edge of the outer annular wall is substantially flush with the virtual plate body extending outward from the annular bottom plate.

3. The drainage impeller with annular grooves according to claim 1, wherein: The upper surface of the junction between the annular wall and the shoulder plate is in an arc shape.

4. The drainage impeller with annular grooves according to claim 1, wherein: The top edge of the retaining wall is undulating along the peripheral edge of the annular bottom plate, and the bottom edge of the outer annular wall is undulating along the peripheral edge of the annular bottom plate.

5. The drainage impeller with annular grooves according to claim 4, wherein: The undulating high point of the top edge of the retaining wall corresponds vertically to the undulating high point of the bottom edge of the outer ring wall.

6. The drainage impeller with annular grooves according to claim 1, wherein: The top edge of the retaining wall is horizontal along the peripheral edge of the annular bottom plate, and the bottom edge of the outer annular wall is horizontal along the peripheral edge of the annular bottom plate.

7. The drainage impeller with annular grooves according to claim 1, wherein: The shoulder plate is provided with a plurality of balancing holes, the plurality of balancing holes are arranged at equal angles relative to the axis, and the plurality of balancing holes are spatially connected with the annular groove.

8. The drainage impeller with annular grooves according to claim 7, wherein: Each of the balancing holes is located at the end of a main blade or a sub-blade.

9. The drainage impeller with annular grooves according to claim 1, wherein: The top surfaces of the plurality of main blades and the plurality of sub-blades are flush with the top surface of the shoulder plate.

10. The drainage impeller with annular grooves according to claim 1, wherein: Among the plurality of main blades and the plurality of sub-blades, some blade top edges are higher than the top surface of the shoulder plate and flush with the top edge of the retaining wall.

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