Anti-torque cutting sewage pump

Abstract

The utility model provides an anti-torsion cutting sewage pump which comprises a driving motor, a pump head and an impeller, the driving motor is fixed on the pump head, the impeller is located in the pump head, a driving shaft of the driving motor penetrates into the pump head and is connected with the impeller, a water inlet and a water outlet are formed in the pump head, and the water inlet and the water outlet are connected with the impeller. The impeller is provided with a water inlet end and a water outlet end, the water inlet end corresponds to the water inlet, the water outlet end corresponds to the water outlet, the impeller further comprises a blade and a cutterhead, the cutterhead is connected to the outer wall of the pump head and corresponds to the water inlet, the impeller is connected with a connecting shaft, the connecting shaft is connected with the blade through connecting teeth, and the connecting teeth are arranged on the connecting shaft. The blades correspond to the cutter heads, and aquatic plants are cut off under the cooperation of the blades and the cutter heads.

Description

Technical Field

[0001] The utility model relates to a water pump, in particular to a torsion-resistant cutting sewage pump. Background Art

[0002] At present, a Chinese patent with authorization announcement number CN208778260U discloses a centrifugal pump, including a casing, one side of the casing is fixedly connected to one side of a back cover by rivets, the middle of the other side of the back cover is fixedly connected to one end of a driving motor, the middle of one end of the driving motor is movably connected to one end of a pump shaft, the other side of the back cover is fixedly connected to one side of a seal, the other end of the pump shaft is fixedly connected to an impeller on the outside, and a plurality of guide grooves are opened inside the impeller.

[0003] This centrifugal pump can filter larger impurities through the filter plate to prevent the larger impurities from clogging the centrifugal pump and affecting the use of the centrifugal pump. The seal can prevent water inside the casing from entering the inside of the drive motor and causing damage to the drive motor. The impurities that cannot be filtered by the filter plate can be precipitated through the sedimentation tank. The dirt baffle plate and the sealing ring can prevent the water in the centrifugal pump from flowing out of the sedimentation tank. The connection between the protrusion and the groove can facilitate the discharge of impurities in the sedimentation tank.

[0004] However, in actual use, there are often water plants in the sewage. Due to their long length, the water plants will be entangled on the impeller and hinder the rotation of the impeller. This requires workers to cut the water plants with scissors before continuing to use it, so it is less practical. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a torsion-resistant cutting sewage pump, which can cut off aquatic plants by the cooperation of a blade and a cutter disc, so as to achieve the purpose of improving practicality.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a torsion-resistant cutting sewage pump, comprising a driving motor, a pump head, and an impeller, the driving motor is fixed on the pump head, the impeller is located in the pump head, the driving shaft of the driving motor penetrates the pump head and is connected to the impeller, the pump head is provided with a water inlet and a water outlet, the impeller has a water inlet end and a water outlet end, the water inlet end corresponds to the water inlet, the water outlet end corresponds to the water outlet, and also includes a blade and a cutter disc, the cutter disc is connected to the outer wall of the pump head and corresponds to the water inlet, the impeller is connected to a connecting shaft, the connecting shaft is connected to the blade through connecting teeth, and the blade corresponds to the cutter disc.

[0007] To implement the above technical solution, the drive motor is started, the drive shaft drives the impeller to rotate, and water passes through the water inlet, the water inlet end, the water outlet end in sequence, and is finally discharged from the water outlet. During this period, the blade rotates while the impeller rotates through the connecting action of the connecting shaft. With the cooperation of the blade and the cutter disc, the aquatic plants penetrating the cutter disc can be cut off, eliminating the process of workers manually cutting the aquatic plants, thereby achieving the purpose of improving practicality.

[0008] As a preferred solution of the utility model, a mounting hole is opened in the center of the impeller, the inner diameter of the mounting hole is larger than the outer diameter of the driving shaft, a pressure block is arranged in the mounting hole, the end of the connecting shaft is fixedly connected with a locking bolt, the locking bolt passes through the pressure block and is threadedly connected to the driving shaft, and the pressure block is tightly pressed against the end of the driving shaft.

[0009] To implement the above technical solution, the connecting shaft is passed through the blade, the cutter disc, and then through the pressure block, and finally threadedly connected to the drive shaft through a locking bolt, so that the connecting shaft can fix the impeller on the drive shaft while connecting the blade, so that the torque of the drive shaft can be directly transmitted to the blade, thereby achieving the purpose of increasing the torque.

[0010] As a preferred solution of the utility model, the connecting shaft is provided with a positioning groove along its length direction, a pressure rod is connected in the positioning groove via an elastic structure, and a straight groove for embedding the pressure rod is provided on the blade.

[0011] To implement the above technical solution, the blade sleeve is arranged on the connecting shaft, and the pressure rod applies force to the blade through the elastic structure to limit the blade. Compared with the traditional threaded fixation, the installation is more convenient and it is not easy to be stuck by mud, sand and stones.

[0012] As a preferred solution of the utility model, the elastic structure includes an elastic member, a slide groove and a slide rod. The slide groove is opened on the outer wall of the connecting shaft and is connected to the positioning groove. The slide rod is slidably connected in the slide groove and fixedly connected to the pressure rod. One end of the elastic member is fixed on the inner wall of the positioning groove, and the other end is fixedly connected to the slide rod.

[0013] To implement the above technical solution, the slide rod is rotated to place the pressure rod in the positioning groove, the blade sleeve is arranged on the outside of the connecting shaft, and then the slide rod is rotated to extend the pressure rod from the positioning groove. The slide rod is released, and the elastic force of the elastic member causes the pressure rod to press against the side of the blade facing away from the cutter disc, thereby achieving blade positioning.

[0014] As a preferred solution of the utility model, the impeller is provided with a first arc surface and a second arc surface, the first arc surface and the second arc surface are arranged opposite to each other, the first arc surface is close to the driving shaft, and the angle formed by the axis of the water inlet end and the axis of the water outlet end is a right angle or an obtuse angle.

[0015] To implement the above technical solution, during the rotation of the impeller, water enters the impeller from the water inlet end and is then discharged from the water outlet end. During this period, due to the setting of the first curved surface and the second curved surface, the water flow is smoother, thereby improving the water flow permeability. In addition, since the angle formed by the axis of the water inlet end and the axis of the water outlet end is a right angle or an obtuse angle, the water flow turning amplitude is smaller than that of an acute angle, thereby further improving the water flow permeability.

[0016] As a preferred solution of the utility model, a connecting pipe is fixedly connected to the outer wall of the pump head, the connecting pipe is located between the water outlet and the impeller, and a threaded groove is provided on the connecting pipe.

[0017] By implementing the above technical solution, a water thermometer and other equipment can be threadedly connected to the connecting pipe to detect the water condition.

[0018] As a preferred solution of the utility model, a weight-reducing ring groove is provided on the side of the impeller facing away from the water inlet end.

[0019] Implementing the above technical solution reduces the mass of the impeller and reduces energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A cross-sectional schematic diagram showing a pump head;

[0021] Figure 2 To reflect the structural diagram of the cutter disc;

[0022] Figure 3 A schematic diagram showing the position of the elastic member.

[0023] Figure numerals: 1. driving motor; 11. pump head; 12. bearing; 21. water inlet; 22. water outlet; 3. impeller; 31. water inlet end; 32. water outlet end; 33. first arc surface; 34. second arc surface; 35. weight-reducing ring groove; 4. connecting pipe; 41. threaded groove; 5. cutter disc; 51. round hole; 6. connecting shaft; 61. connecting teeth; 62. mounting hole; 63. pressure block; 64. locking bolt; 7. blade; 81. positioning groove; 82. pressure rod; 83. straight groove; 9. elastic structure; 91. elastic member; 92. slide groove; 93. slide rod. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0025] A torsion-resistant cutting sewage pump comprises a driving motor 1, a pump head 11, and an impeller 3. The driving motor 1 is a servo motor and is fixed to the pump head 11 by screws.

[0026] The impeller 3 is located inside the pump head 11. The drive shaft of the drive motor 1 penetrates the pump head 11 and is connected to the impeller 3. In order to make the rotation of the drive shaft more stable, a plurality of bearings 12 are arranged between the drive shaft and the pump head 11.

[0027] The pump head 11 is provided with a water inlet 21 and a water outlet 22, and the impeller 3 is provided with a water inlet end 31 and a water outlet end 32; the water inlet end 31 corresponds to the water inlet 21, and the water outlet end 32 corresponds to the water outlet 22. The impeller 3 is provided with a first arc surface 33 and a second arc surface 34, and the first arc surface 33 and the second arc surface 34 are arranged opposite to each other. The first arc surface 33 is close to the drive shaft, and the second arc surface 34 is far away from the drive shaft. The angle A formed by the axis of the water inlet end 31 and the axis of the water outlet end 32 is a right angle or an obtuse angle.

[0028] A connecting pipe 4 is fixedly connected to the outer wall of the pump head 11, and the connecting pipe 4 is located between the water outlet 22 and the impeller 3. A thread groove 41 is provided on the connecting pipe 4. Through the setting of the thread groove 41, the connecting pipe 4 can be connected to the water temperature meter.

[0029] A weight-reducing annular groove 35 is provided on a side of the impeller 3 facing away from the water inlet end 31 .

[0030] The cutter disc 5 is connected to the outer wall of the pump head 11 by screws and corresponds to the water inlet 21. A circular hole 51 is opened in the center of the cutter disc 5. The impeller 3 is connected to a connecting shaft 6. The connecting shaft 6 passes through the circular hole 51 and is connected to the blade 7 through the connecting teeth 61. The blade 7 corresponds to the cutter disc 5 and is located on the side of the cutter disc 5 facing away from the impeller 3.

[0031] A mounting hole 62 is provided at the center of the impeller 3. The inner diameter of the mounting hole 62 is larger than the outer diameter of the drive shaft. A pressing block 63 is provided in the mounting hole 62. A locking bolt 64 is fixedly connected to the end of the connecting shaft 6. The locking bolt 64 is coaxially arranged with the connecting shaft 6. The locking bolt 64 passes through the pressing block 63 and is threadedly connected to the drive shaft. The pressing block 63 is tightly pressed against the end of the drive shaft.

[0032] The connecting shaft 6 is provided with a positioning groove 81 along its length direction, a pressure rod 82 is connected to the positioning groove 81 via an elastic structure 9 , and a straight groove 83 for embedding the pressure rod 82 is provided on the blade 7 .

[0033] The elastic structure 9 includes an elastic member 91, a slide groove 92 and a slide rod 93. The slide groove 92 is provided on the outer wall of the connecting shaft 6 and communicates with the positioning groove 81, so that the cross-sections of the slide groove 92 and the positioning groove 81 are arranged in a cross. The slide rod 93 is slidably connected to the slide groove 92, and the middle part of the slide rod 93 is fixedly connected to the middle part of the pressure rod 82, so that the slide rod 93 and the pressure rod 82 are arranged in a cross shape. One end of the elastic member 91 is fixed to the inner wall of the positioning groove 81, and the other end is fixedly connected to the slide rod 93.

[0034] During installation, the connecting shaft 6 is first fixed to the driving shaft, and then the cutter disc 5 is sleeved on the outside of the connecting shaft 6 and fixed to the pump head 11. The slide bar 93 moves and rotates along the length direction of the slide groove 92, so that the pressure rod 82 is located in the positioning groove 81, and then the blade 7 is sleeved on the connecting shaft 6, so that the connecting teeth 61 correspond to the blade 7, and the slide bar 93 is rotated to make the pressure rod 82 extend from the positioning groove 81, and then the slide bar 93 is released to make the pressure rod 82 embedded in the straight groove 83. Through the elastic force of the elastic member 91, the blade 7 always has a tendency to move toward the cutter disc 5, so that the blade 7 and the cutter disc 5 always keep matching.

[0035] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A torsion-resistant cutting sewage pump, comprising a driving motor (1), a pump head (11), and an impeller (3), wherein the driving motor (1) is fixed to the pump head (11), the impeller (3) is located in the pump head (11), the driving shaft of the driving motor (1) penetrates into the pump head (11) and is connected to the impeller (3), the pump head (11) is provided with a water inlet (21) and a water outlet (22), the impeller (3) has a water inlet end (31) and a water outlet end (32), the water inlet end (31) corresponds to the water inlet (21), and the water outlet end (32) corresponds to the water outlet (22), wherein: It also includes a blade (7) and a cutter disc (5), wherein the cutter disc (5) is connected to the outer wall of the pump head (11) and corresponds to the water inlet (21), the impeller (3) is connected to a connecting shaft (6), the connecting shaft (6) is connected to the blade (7) via connecting teeth (61), and the blade (7) corresponds to the cutter disc (5).

2. The torsion-resistant cutting sewage pump according to claim 1 is characterized in that: A mounting hole (62) is provided at the center of the impeller (3), the inner diameter of the mounting hole (62) is larger than the outer diameter of the drive shaft, a pressure block (63) is provided in the mounting hole (62), the end of the connecting shaft (6) is fixedly connected with a locking bolt (64), the locking bolt (64) passes through the pressure block (63) and is threadedly connected to the drive shaft, and the pressure block (63) is tightly pressed against the end of the drive shaft.

3. The torsion-resistant cutting sewage pump according to claim 1 is characterized in that: The connecting shaft (6) is provided with a positioning groove (81) along its length direction, a pressure rod (82) is connected to the positioning groove (81) via an elastic structure (9), and a straight groove (83) for embedding the pressure rod (82) is provided on the blade (7).

4. The torsion-resistant cutting sewage pump according to claim 3 is characterized in that: The elastic structure (9) comprises an elastic member (91), a slide groove (92) and a slide rod (93); the slide groove (92) is provided on the outer wall of the connecting shaft (6) and is connected to the positioning groove (81); the slide rod (93) is slidably connected in the slide groove (92) and is fixedly connected to the pressure rod (82); one end of the elastic member (91) is fixed to the inner wall of the positioning groove (81), and the other end is fixedly connected to the slide rod (93).

5. A torsion-resistant cutting sewage pump according to any one of claims 1 to 4, characterized in that: The impeller (3) is provided with a first curved surface (33) and a second curved surface (34), the first curved surface (33) and the second curved surface (34) are arranged opposite to each other, the first curved surface (33) is close to the driving shaft, and the angle formed by the axis of the water inlet end (31) and the axis of the water outlet end (32) is a right angle or an obtuse angle.

6. The torsion-resistant cutting sewage pump according to claim 5 is characterized in that: A connecting pipe (4) is fixedly connected to the outer wall of the pump head (11), the connecting pipe (4) is located between the water outlet (22) and the impeller (3), and a threaded groove (41) is provided on the connecting pipe (4).

7. The torsion-resistant cutting sewage pump according to claim 6 is characterized in that: A weight-reducing annular groove (35) is provided on the side of the impeller (3) facing away from the water inlet end (31).

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