Drainage device

Abstract

The utility model provides a drainage device which comprises a shell, an inner grid disc, a cutting piece and a driving mechanism, an overflowing channel allowing fluid to pass through in the inflow direction is defined in the shell, the inner grid disc is arranged in the overflowing channel and used for filtering at least part of impurities in the fluid on the inflow side of the inner grid disc, and the cutting piece is arranged on the overflowing channel and located on the inflow side of the inner grid disc and used for cutting the fluid in the inflow direction. The cutting piece comprises at least one cutting part, the at least one cutting part is arranged to cut impurities on the inflow side of the inner grid disc through rotation, and the driving mechanism is in transmission connection with the at least one cutting part so as to drive the cutting part to rotate. According to the drainage device, the rotating effect of the cutting part can be improved, the cutting effect of the cutting part is further improved, and the anti-blocking effect of the drainage device is further improved.

Description

Technical Field

[0001] The utility model relates to water supply and drainage technology, in particular to a drainage device. Background Art

[0002] For drainage devices, anti-blocking design has always attracted people's attention. In the prior art, there is an anti-blocking floor drain, which includes a grille and a double-edged impeller arranged on the inlet side of the grille. The grille is used to filter impurities in the water flow at its inlet side, and the water flow impacts the double-edged impeller to make it rotate, so as to cut the impurities and prevent the impurities from clogging the grille.

[0003] The above-mentioned prior art has certain technical problems. Since the drainage device is often used in a low-flow drainage environment, the impact force of the fluid on the double-edged impeller is very limited, and it is difficult to achieve a better driving effect on the double-edged impeller, which leads to a poor effect of the double-edged impeller in cutting impurities, so further improvement is needed. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a drainage device that improves the cutting effect of the cutting part.

[0005] A further object of the utility model is to reduce the influence of impurities in the fluid on the drive shaft and the power unit.

[0006] A further object of the present invention is to enable the cutting portion to obtain a better rotation effect.

[0007] In particular, the utility model provides a drainage device, characterized in that it includes: a shell, which defines a flow channel allowing fluid to pass through in the inlet direction; an inner grid plate, arranged in the flow channel, and used to filter at least part of the impurities in the fluid on its inlet side; a cutting member, arranged in the flow channel, located on the inlet side of the inner grid plate, the cutting member includes at least one cutting portion, and the at least one cutting portion is configured to cut impurities on the inlet side of the inner grid plate by rotation; a driving mechanism, which is transmission-connected to the at least one cutting portion to drive the cutting portion to rotate.

[0008] Optionally, the driving mechanism is configured to rotate under the drive of the fluid when the fluid passes through the flow channel, thereby driving the cutting part to rotate.

[0009] Optionally, the driving mechanism includes: a driving shaft, located on the outflow side of the inner grid disk, extending along the inflow direction, and passing through the inner grid disk to be connected to the cutting part; a power part, located on the outflow side of the inner grid disk, connected to the driving shaft to drive the driving shaft to rotate around its axis, thereby driving the cutting part to rotate.

[0010] Optionally, the power unit is configured as a spiral blade spirally wound around the circumference of the drive shaft. When the fluid in the flow channel impacts the spiral blade, the fluid drives the spiral blade to rotate around the axis of the drive shaft, thereby driving the drive shaft to rotate.

[0011] Optionally, the flow passage has a first flow section, and the spiral blade is arranged in the first flow section; and the diameter of the spiral blade matches the diameter of the first flow section.

[0012] Optionally, the flow passage has a second flow section, which is located on the inlet side of the first flow section in the inlet direction; the diameter of the second flow section gradually decreases along the inlet direction and finally connects with the first flow section.

[0013] Optionally, the drainage device further comprises: a rotation support member, which is arranged in the flow passage and located on the outflow side of the inner grid disc, and is used to rotationally support the outflow end of the driving shaft in the inflow direction.

[0014] Optionally, the rotating support member includes a supporting portion, the supporting portion is provided with a rotating groove, and the outflow end of the driving shaft is rotatably arranged in the rotating groove to rotatably support the outflow end of the driving shaft.

[0015] Optionally, the outflow end of the driving shaft is configured as a pointed end, and the rotating groove is configured as a pointed end-shaped groove matching the outflow end of the driving shaft.

[0016] Optionally, the rotating support also includes a fixing frame connected between the supporting portion and the inner wall of the flow passage to fix the supporting portion at the center of the flow passage.

[0017] Optionally, a rotating hole is provided on the inner grid disc; the inlet end of the driving shaft in the inlet direction is rotatably arranged in the rotating hole.

[0018] Optionally, the cutting member further comprises a rotating shaft, and at least one cutting portion is connected to the rotating shaft; the driving shaft is connected to the rotating shaft to drive the rotating shaft to rotate, thereby driving the cutting portion to rotate.

[0019] Optionally, there are a plurality of cutting portions, and the plurality of cutting portions are arranged at intervals along the circumference of the inner grid disk.

[0020] Optionally, the cutting portion is configured as a blade, and the blade has a lower blade and an upper blade; the lower blade fits against the inlet surface of the inner grid disk so as to cut impurities falling on the inlet surface of the inner grid disk; the upper blade faces in a countercurrent direction opposite to the inlet direction so as to cut impurities entering the flow channel.

[0021] Optionally, the inner wall of the flow channel protrudes inward to form a step portion; the inner grid plate also includes a plate body, which has a plurality of flow holes allowing fluid to pass through, and the plate body is placed on the step portion to constrain the freedom of the plate body in the inlet direction.

[0022] Optionally, the inner grid disc further comprises a retaining wall, which is formed on the outflow surface of the disc body in the inflow direction and cooperates with the inner wall of the flow passage to fix the disc body.

[0023] Optionally, the drainage device further comprises: an outer grid plate, which is arranged at the flow inlet of the flow channel and is used to filter at least part of the impurities in the fluid entering the flow channel.

[0024] In the drainage device of the utility model, the driving mechanism is arranged in the flow channel and is transmission-connected with at least one cutting part. That is to say, the cutting part of the drainage device of the utility model is driven by an additional special driving mechanism. Compared with the prior art, this method can improve the rotation effect of the cutting part, thereby improving the cutting effect of the cutting part, and further improving the anti-blocking effect of the drainage device.

[0025] Furthermore, in the drainage device of the utility model, since a portion of impurities have been filtered out when the fluid passes through the inner grid disc, that is, there are fewer impurities in the fluid on the outflow side of the inner grid disc, the drive shaft and the power unit are both arranged on the outflow side of the inner grid disc, which can reduce the impact of impurities in the fluid on the drive shaft and the power unit and improve the reliability of the drive mechanism.

[0026] Furthermore, in the drainage device of the utility model, the power part is configured as a spiral blade spirally coiled around the circumference of the drive shaft. When the fluid in the flow channel impacts the spiral blade, the fluid drives the spiral blade to rotate around the axis of the drive shaft, thereby driving the drive shaft to rotate. Since the spiral blade is an additional arrangement, it is not limited by the size and shape of the cutting part. The spiral blade can be designed to be coiled multiple times, which can ensure that the spiral blade generates a sufficiently large driving force, so that the cutting part can obtain a better rotation effect, and thus the drainage device obtains a better anti-blocking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of a drainage device in one embodiment of the utility model Figure 1 ;

[0029] Figure 2 A schematic diagram of a drainage device in one embodiment of the utility model Figure 2 ;

[0030] Figure 3This is an exploded view of a drainage device in one embodiment of the utility model;

[0031] Figure 4 It is a cross-sectional view of a drainage device in one embodiment of the utility model;

[0032] Figure 5 for Figure 4 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Combine the following Figures 1 to 5 , describing the structure and working principle of the drainage device 1 of the utility model. The utility model provides a drainage device 1, which can be connected to a drainage pipe for use, and can also be used alone as a floor drain.

[0037] In some embodiments, the drainage device 1 may include a housing 10, an inner grid plate 20, a cutting member 30, and a driving mechanism 40. A flow passage 110 is defined in the housing 10 to allow fluid to pass through in the inflow direction. The inner grid plate 20 is disposed in the flow passage 110 to filter at least part of the impurities in the fluid on its inflow side. The cutting member 30 is disposed in the flow passage 110, located on the inflow side of the inner grid plate 20, and the cutting member 30 includes at least one cutting portion 310, and the at least one cutting portion 310 is configured to cut impurities on the inflow side of the inner grid plate 20 by rotating. The driving mechanism 40 is in transmission connection with at least one cutting portion 310 to drive the cutting portion 310 to rotate.

[0038] Specifically, the housing 10 has an inlet 120 and an outlet 130 respectively connected to the flow passage 110 . The fluid discharged into the housing 10 along the inlet direction passes through the inlet 120 and the flow passage 110 in sequence and is finally discharged from the outlet 130 .

[0039] The inner grid plate 20 is arranged in the flow channel 110 and has a plurality of flow holes 212 thereon. When the fluid passes through the plurality of flow holes 212 on the inner grid plate 20, impurities in the fluid will be filtered and collected on the inlet side of the inner grid plate 20 (i.e., the side of the inner grid plate 20 close to the inlet 120 of the shell 10).

[0040] The cutting member 30 is disposed on the inlet side of the inner grid disc 20. At least one cutting portion 310 of the cutting member 30 can cut impurities on the inlet side of the inner grid disc 20 by rotating, reducing the volume of the impurities so that the impurities can continue to be discharged downward through the flow hole 212. In addition, the cutting portion 310 can also play a scraping role. For example, the cutting portion 310 can scrape the hair stuck on the inlet side of the inner grid disc 20 during the rotation process, so that the hair can be discharged from the flow hole 212 as soon as possible.

[0041] In this embodiment, the driving mechanism 40 is transmission-connected to at least one cutting part 310, that is, the cutting part 310 of this embodiment is driven by an additional special driving mechanism 40. Compared with the prior art, this method can improve the rotation effect of the cutting part 310, thereby improving the cutting effect of the cutting part 310, and further improving the anti-blocking effect of the drainage device 1.

[0042] In some specific embodiments, the driving mechanism 40 may be a driving motor, and the output shaft of the driving motor is directly connected to the cutting part 310 to directly drive the cutting part 310 to rotate.

[0043] In some other specific embodiments, the driving mechanism 40 may also be configured to rotate under the drive of the fluid when the fluid passes through the flow channel, thereby driving the cutting part 310 to rotate. In other words, compared with the above embodiment, although the present embodiment uses an additional special driving mechanism 40 to drive the cutting part 310 to rotate, it does not increase additional energy consumption, and fully converts the kinetic energy of the fluid into the driving force of the cutting part 310, which can not only save energy, but also simplify the structure and reduce costs.

[0044] Furthermore, the driving mechanism 40 may also include a driving shaft 410 and a power unit 420. The driving shaft 410 is located on the outflow side of the inner grid disc 20, extends along the inflow direction, and passes through the inner grid disc 20 to be connected to the cutting unit 310. The power unit 420 is located on the outflow side of the inner grid disc 20, and is connected to the driving shaft 410 to drive the driving shaft 410 to rotate around its axis, thereby driving the cutting unit 310 to rotate.

[0045] In some specific embodiments, a rotating hole 214 may also be provided on the inner grid disc 20, and the inlet end 412 of the driving shaft 410 in the inlet direction may be rotatably provided in the rotating hole 214, and is transmission-connected to the cutting portion 310 on the inlet side of the inner grid disc 20 through the rotating hole 214.

[0046] In this embodiment, since a portion of impurities have been filtered out when the fluid passes through the inner grid disk 20, that is, there are fewer impurities in the fluid on the outflow side of the inner grid disk 20, the drive shaft 410 and the power unit 420 are both arranged on the outflow side of the inner grid disk 20. This can reduce the impact of impurities in the fluid on the drive shaft 410 and the power unit 420, thereby improving the reliability of the drive mechanism 40.

[0047] Furthermore, the power unit 420 can also be configured as a spiral blade spirally wound around the circumference of the drive shaft 410. When the fluid in the flow channel 110 impacts the spiral blade, the fluid drives the spiral blade to rotate around the axis of the drive shaft 410, thereby driving the drive shaft 410 to rotate.

[0048] When the fluid flowing in the inlet direction impacts the spiral blade, the impact force has a component along the circumference of the drive shaft 410. Under the action of this component, the spiral blade can be driven to rotate around the axis of the drive shaft 410, thereby causing the drive shaft 410 connected to the spiral blade to rotate around its axis.

[0049] In addition, in the prior art of the background technology section, the double-edged impeller rotates under the impact of the water flow. This driving method is limited by the size and shape requirements of the double-edged impeller itself, so the spiral extension distance of the double-edged impeller is also very small, and it is difficult for the water flow to generate a large enough driving force, and it is difficult for the double-edged impeller to maintain a strong rotation effect. In this embodiment, the spiral blade is additionally provided, which is not limited by the size and shape of the cutting part 310. The spiral blade can be designed to be coiled multiple times, which can ensure that the spiral blade generates a large enough driving force, so that the cutting part 310 can obtain a better rotation effect, and then the drainage device 1 can obtain a better anti-blocking effect.

[0050] Furthermore, the flow passage 110 has a first flow section 112, and the spiral blade is arranged in the first flow section 112. The diameter of the spiral blade matches the diameter of the first flow section 112, so that the fluid in the first flow section 112 can impact the spiral blade as much as possible, further improving the rotation effect of the spiral blade.

[0051] Ideally, the diameter of the spiral blade can be set to be equal to the diameter of the first flow segment 112. However, considering factors such as reasonable manufacturing tolerance and ease of installation, the diameter of the spiral blade can be set to be slightly smaller than the diameter of the first flow segment 112 (for example, the diameter difference between the first flow segment 112 and the spiral blade can be controlled to be between 0.5 mm and 4 mm), and this can also be considered that the diameters of the two are matched.

[0052] Furthermore, the flow passage 110 has a second flow section 114 , which is located at the inflow side of the first flow section 112 in the inflow direction. The diameter of the second flow section 114 gradually decreases along the inflow direction and finally connects with the first flow section 112 .

[0053] That is to say, in the inlet direction, the second flow segment 114 is connected to the first flow segment 112 in a reducing manner, so that when the fluid flows from the second flow segment 114 into the first flow segment 112, the cross-sectional area decreases and the fluid flow rate increases, and after entering the first flow segment 112, a stronger impact effect can be produced on the spiral blades.

[0054] In some embodiments, the drainage device 1 may further include a rotating support member 50, which is disposed in the flow passage 110 and located on the outflow side of the inner grid plate 20, and is used to rotationally support the outflow end 414 of the drive shaft 410 in the inflow direction.

[0055] In some specific embodiments, the rotary support member 50 may further include a support portion 510, the support portion 510 is provided with a rotation groove 512, and the outflow end 414 of the drive shaft 410 is rotatably disposed in the rotation groove 512 to rotatably support the outflow end 414 of the drive shaft 410. This rotary support method has the advantages of simple structure, low manufacturing cost, and easy installation.

[0056] Furthermore, in this embodiment, the outflow end 414 of the drive shaft 410 can also be configured as a pointed end, and the rotation groove 512 is configured as a pointed end groove matching the outflow end 414 of the drive shaft 410. In this way, the friction between the outflow end 414 of the drive shaft 410 and the rotation groove 512 can be reduced, thereby improving the rotation effect.

[0057] Further, the rotating support 510 may also include a fixing frame 520, which is connected between the support portion 510 and the inner wall of the flow passage 110 to fix the support portion 510 at the center of the flow passage 110. Specifically, a plurality of fixing frames 520 may be provided so as to be fixed to the support portion 510 in multiple directions, making the support portion 510 more stable. In some specific embodiments, there are four fixing frames 520, which are connected between the support portion 510 and the inner wall of the flow passage 110 in a cross-shaped layout.

[0058] In some other specific embodiments, the support portion 510 can also be a bearing, the inner ring of the bearing is fixed to the outlet end 414 of the drive shaft 410, and the fixing frame 520 is connected between the outer ring of the bearing and the inner wall of the flow channel 110, and is fixed at the center of the flow channel 110.

[0059] In some embodiments, the cutting member 30 may further include a rotating shaft 320, and at least one cutting portion 310 is connected to the rotating shaft 320. The driving shaft 410 is connected to the rotating shaft 320 to drive the rotating shaft 320 to rotate, thereby driving the cutting portion 310 to rotate.

[0060] In some embodiments, there are multiple cutting portions 310, and the multiple cutting portions 310 are arranged at intervals along the circumference of the inner grid disc 20. For example, there may be three cutting portions 310, and the three cutting portions 310 may be arranged at intervals along the circumference of the inner grid disc 20 at 120 degrees to each other.

[0061] In some embodiments, the cutting portion 310 is configured as a blade, and the blade has a lower blade 312 and an upper blade 314. The lower blade 312 is in contact with the inlet surface of the inner grid disk 20 to cut impurities falling on the inlet surface of the inner grid disk 20. The upper blade 314 faces the countercurrent direction opposite to the inlet direction to cut impurities entering the flow passage 110.

[0062] In some embodiments, the inner wall of the flow channel 110 protrudes inward to form a step portion 116a. The inner grid plate 20 may also include a plate body 210, which is provided with a plurality of flow holes 212 for allowing fluid to pass through, and the plate body 210 is mounted on the step portion 116a to constrain the freedom of the plate body 210 in the inflow direction.

[0063] Furthermore, the inner grid disc 20 may further include a retaining wall 220 , which is formed on the outflow surface of the disc body 210 in the inflow direction and cooperates with the inner wall of the flow passage 110 to fix the disc body 210 .

[0064] In some specific embodiments, the flow passage 110 may further include a third flow segment 116, which is located at the inflow side of the second flow segment 114 in the inflow direction, and the third flow segment 116 is connected to the second flow segment 114. The inner grid plate 20 is disposed in the third flow segment 116, and the inner wall of the third flow segment 116 protrudes inward to form a step portion 116a.

[0065] In some embodiments, the drainage device 1 may further include an outer grid plate 60, which is disposed at the inlet of the flow passage 110 (i.e., the inlet 120 of the housing 10), and is used to filter at least part of the impurities in the fluid entering the flow passage 110, thereby achieving primary filtration. Specifically, the structure of the outer grid plate 60 is similar to that of the inner grid plate 20, and it has a plate body mounted at the inlet 120 of the housing 10 and a side surrounding portion matched with the inner wall of the flow passage 110, so that the outer grid plate 60 has a good fixing effect.

[0066] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A drainage device, characterized in that: include: A housing, wherein a flow passage is defined therein for allowing fluid to pass therethrough in an inflow direction; An inner grid plate, disposed in the flow passage, for filtering at least part of impurities in the fluid on its inlet side; A cutting member is arranged in the flow passage and located at the inlet side of the inner grid disk, wherein the cutting member comprises at least one cutting portion, and at least one cutting portion is arranged to cut impurities on the inlet side of the inner grid disk by rotating; The driving mechanism is connected to at least one of the cutting parts to drive the cutting part to rotate.

2. The drainage device according to claim 1, characterized in that: The driving mechanism is configured to rotate under the drive of the fluid when the fluid passes through the flow channel, thereby driving the cutting part to rotate.

3. The drainage device according to claim 2, characterized in that: The driving mechanism comprises: A driving shaft, located at the outflow side of the inner grid disc, extending along the inflow direction, and passing through the inner grid disc to be connected with the cutting portion; The power part is located at the outflow side of the inner grid disc and is connected to the driving shaft to drive the driving shaft to rotate around its axis, thereby driving the cutting part to rotate.

4. The drainage device according to claim 3, characterized in that: The power unit is configured as a spiral blade spirally wound around the circumference of the drive shaft. When the fluid in the flow channel impacts the spiral blade, the fluid drives the spiral blade to rotate around the axis of the drive shaft, thereby driving the drive shaft to rotate.

5. The drainage device according to claim 4, characterized in that: The flow passage has a first flow section, and the spiral blade is arranged in the first flow section; and The diameter of the spiral blade matches the diameter of the first flow section.

6. The drainage device according to claim 5, characterized in that: The flow passage has a second flow section, and the second flow section is located at the inflow side of the first flow section in the inflow direction; The diameter of the second flow section gradually decreases along the inlet direction and finally connects with the first flow section.

7. The drainage device according to any one of claims 3 to 6, characterized in that: Also includes: A rotation support member is arranged in the flow passage, located at the outflow side of the inner grid disc, and is used to rotationally support the outflow end of the drive shaft in the inflow direction.

8. The drainage device according to claim 7, characterized in that: The rotary support member comprises a support portion, the support portion is provided with a rotation groove, and the outflow end of the driving shaft is rotatably arranged in the rotation groove to rotatably support the outflow end of the driving shaft.

9. The drainage device according to claim 8, characterized in that: The outflow end of the driving shaft is configured as a tip, and the rotating groove is configured as a tip-shaped groove matching the outflow end of the driving shaft.

10. The drainage device according to claim 8, characterized in that: The rotating support also includes a fixing frame connected between the supporting portion and the inner wall of the flow passage to fix the supporting portion at the center of the flow passage.

11. The drainage device according to any one of claims 3 to 6 and 8 to 10, characterized in that: The inner grid plate is provided with a rotation hole; The driving shaft is rotatably arranged at the rotating hole at an inlet end in the inlet direction.

12. The drainage device according to any one of claims 3 to 6 and 8 to 10, characterized in that: The cutting member further comprises a rotating shaft, and at least one of the cutting parts is connected to the rotating shaft; The driving shaft is connected to the rotating shaft to drive the rotating shaft to rotate, thereby driving the cutting part to rotate.

13. The drainage device according to any one of claims 1 to 6 and 8 to 10, characterized in that: There are a plurality of cutting portions, and the plurality of cutting portions are arranged at intervals along the circumference of the inner grid disk.

14. The drainage device according to any one of claims 1 to 6 and 8 to 10, characterized in that: The cutting portion is configured as a blade, and the blade has a lower blade edge and an upper blade edge; The lower blade is in contact with the inlet surface of the inner grid disc so as to cut the impurities falling on the inlet surface of the inner grid disc; The upper blade faces a countercurrent direction opposite to the inflow direction so as to cut impurities entering the flow passage.

15. The drainage device according to any one of claims 1 to 6 and 8 to 10, characterized in that: The inner wall of the flow passage protrudes inward to form a step portion; The inner grid disc also includes a disc body, which is provided with a plurality of flow holes for allowing fluid to pass through, and the disc body is placed on the step portion to constrain the degree of freedom of the disc body in the inflow direction.

16. The drainage device according to claim 15, characterized in that: The inner grid disc further comprises a retaining wall, which is formed on the outflow surface of the disc body in the inflow direction and cooperates with the inner wall of the flow passage to fix the disc body.

17. The drainage device according to any one of claims 1 to 6, 8 to 10 and 16, characterized in that: Also includes: The outer grid plate is arranged at the flow inlet of the flow channel and is used for filtering at least part of the impurities in the fluid entering the flow channel.

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