Submersible sewage pump with cutting function

Abstract

The utility model provides a submersible sewage pump with a cutting function, which comprises a pump body, a motor is fixedly connected in the pump body, a pump cavity is arranged on the pump body, an impeller is arranged in the pump cavity, the motor drives the impeller to rotate, a water inlet and a water outlet are arranged on the pump body, the water inlet and the water outlet are both communicated with the pump cavity, and the water inlet and the water outlet are communicated with the pump cavity. A supporting disc is arranged at the end, facing the water inlet, of the impeller, the supporting disc is fixed to the inner wall of the pump cavity, a supporting part is connected to the side, facing the impeller, of the supporting disc, protruding parts are fixedly connected to the edge of the supporting part, and the multiple protruding parts are evenly distributed along the axis of the supporting part; the impeller is connected with a blade through a sliding mechanism, the blade is connected with a connecting rod, the connecting rod slides along the outer wall of the supporting part, and the purpose of improving the cutting efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a submersible sewage pump especially, relate to a kind of submersible sewage pump with cutting. BACKGROUND

[0002] In order to prevent fiber from winding impeller when submersible sewage pump works, the structure of submersible sewage pump is improved, cutting device is installed at the water inlet of submersible sewage pump.

[0003] At present, the Chinese patent with the authorization announcement No.CN204572470U discloses a kind of submersible sewage pump, including the pump body with pump cavity in inside, motor and pump shaft being located at the upper portion of pump body, the lower end of pump shaft extends into pump cavity, pump cavity has impeller being sleeved on pump shaft, water inlet and water outlet are provided on pump body, water inlet and water outlet are communicated with pump cavity respectively, cutting seat is provided at water inlet, and cutting blade body is provided in cutting seat, and cutting blade body is coaxially arranged with pump shaft, cutting blade body is fixed on pump shaft by limiting structure, cutting seat has water inlet channel with big inlet and small outlet, and cutting blade is provided on cutting blade body, and cutting blade is located at the outlet of water inlet channel.

[0004] The motor on this submersible sewage pump rotates when starting, and the cutting blade rotates with the cutting seat, so that the cutting blade cuts the fiber. However, cutting the fiber by rotation alone is not enough, and the cutting efficiency is not high. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide a kind of submersible sewage pump with cutting, to improve the cutting efficiency.

[0006] To solve the above technical problems, the technical scheme of the utility model is as follows: a kind of submersible sewage pump with cutting, including pump body, the motor is fixedly connected in the pump body, the pump cavity is opened on the pump body, the impeller is arranged in the pump cavity, the motor drives the rotation of the impeller, the water inlet and the water outlet are opened on the pump body, the water inlet and the water outlet are communicated with the pump cavity, the one end of the impeller towards the water inlet is provided with the support disc, the support disc is fixed on the inner wall of the pump cavity, the one side of the support disc towards the impeller is connected with the support part, the edge of the support part is fixedly connected with the convex part, a plurality of convex parts are evenly distributed along the axis of the support part, the impeller is connected with the blade through the sliding mechanism, the connecting rod is connected on the blade, and the connecting rod slides along the outer wall of the support part.

[0007] When the motor starts, the impeller rotates, the impeller drives the rotation of the blade, at the same time, the connecting rod slides along the outer wall of the support part, when the connecting rod is connected on the convex part, the blade moves along the length direction of itself, so that the blade rotates and reciprocates at the same time, thereby improving the cutting efficiency of the fiber.

[0008] As a preferred scheme of the utility model, the sliding mechanism comprises a sliding groove, a sliding block and an elastic member, the sliding groove is arranged on the impeller, a plurality of sliding grooves are evenly distributed along the axis of the impeller, the sliding block is slidingly connected in the sliding groove and connected with the blade, one end of the elastic member is connected with the inner wall of the sliding groove, and the other end of the elastic member is connected with the sliding block.

[0009] The above technical scheme is realized, in the process of rotation of the impeller, the inner wall of the sliding groove is in contact with the sliding block, so that the sliding block drives the blade to rotate synchronously along the axis of the impeller, when the connecting rod moves to the convex part, the sliding block moves along the length direction of the sliding groove, the elastic member is further stretched, after the connecting rod is separated from the convex part, the sliding block moves along the sliding groove through the elastic force of the elastic member, so that the blade can rotate and reciprocate at the same time, and the cutting efficiency is improved.

[0010] As a preferred scheme of the utility model, the impeller is connected with a protective cover, the sliding groove and the sliding block are located in the interior of the protective cover, a connecting groove is arranged on the side wall of the protective cover, and the blade extends out of the connecting groove.

[0011] The above technical scheme is realized, the protective cover is arranged, so that the fiber is not easy to enter the sliding groove, and the blade is not easy to be stuck.

[0012] As a preferred scheme of the utility model, a contact wheel is rotatably connected on the connecting rod, and the contact wheel is rollingly connected to the outer wall of the supporting part.

[0013] The above technical scheme is realized, the abrasion of the supporting part is reduced, and the service life is prolonged, and meanwhile, the energy consumption is reduced.

[0014] As a preferred scheme of the utility model, a mounting hole is arranged on the supporting disc, a convex column is connected on the supporting part, the convex column is screw-connected in the mounting hole, and a limiting assembly for limiting the rotation of the convex column is arranged on the inner wall of the mounting hole.

[0015] The above technical scheme is realized, when the supporting part is damaged, a new supporting part is replaced, the convex column is screw-connected in the mounting hole, the rotation of the convex column is limited through the limiting assembly, so that the connection between the supporting part and the supporting disc is more stable.

[0016] As a preferred scheme of the utility model, the limiting assembly comprises a jackscrew, a limiting hole, a limiting column, a limiting slot and an elastic sheet, the limiting hole is arranged on the inner wall of the mounting hole and is communicated with the outer wall of the supporting disc, the limiting column is slidingly connected in the limiting hole, the elastic sheet is located in the limiting hole, the jackscrew is threadedly connected on the limiting hole, the two ends of the elastic sheet are connected with the jackscrew and the limiting column respectively, the end of the limiting column is integrally connected with a hemispherical limiting part, the limiting slot is arranged on the outer wall of the convex column, the length direction of the limiting slot is parallel with the axial direction of the convex column, a plurality of limiting slots are evenly distributed along the axial center of the convex column, and the limiting part is used for being embedded in the limiting slot.

[0017] The above technical scheme is realized, the convex column is threadedly connected in the mounting hole, the limiting part on the convex column is embedded in the limiting slot through the elastic force of the elastic sheet, the combined resistance generated by the friction force between the limiting part and the limiting slot and the friction force of the thread is used to make the convex column not easy to rotate, when the installation and dismounting are carried out, the torsional force applied to the supporting part is greater than the resistance, so that the supporting part can be rotated, and the operation is simple and convenient.

[0018] As a preferred scheme of the utility model, the pump body is fixedly connected with a supporting frame through bolts, a plurality of water inlet grooves are arranged on the side wall of the supporting frame.

[0019] The above technical scheme is realized to facilitate the support of the pump body. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic view of the utility model;

[0021] Figure 2 It is a position schematic view of the protective cover;

[0022] Figure 3 It is a position schematic view of the convex part;

[0023] Figure 4 It is a position schematic view of the blade;

[0024] Figure 5 It is Figure 4 the enlarged view of A of the utility model;

[0025] Figure 6 It is a cross-sectional schematic view of the limiting assembly.

[0026] : 1, pump body; 11, motor; 12, water inlet; 13, water outlet; 2, impeller; 3, support frame; 31, water inlet groove; 4, support disc; 41, mounting hole; 42, cross plate; 5, support part; 51, protruding column; 52, protruding part; 6, limiting assembly; 61, jackscrew; 62, limiting hole; 63, limiting column; 64, limiting groove; 65, elastic sheet; 66, limiting part; 7, sliding mechanism; 71, sliding groove; 72, sliding block; 73, elastic piece; 74, blade; 75, fastening screw; 8, connecting rod; 81, contact wheel; 9, protective cover; 91, connecting groove. DETAILED DESCRIPTION

[0027] The specific embodiments of the utility model are further described in detail below in combination with the drawings, so that the technical scheme of the utility model is easier to understand and master.

[0028] A submersible sewage pump with cutting, comprising a pump body 1, a vertical motor 11 is fixedly connected in the pump body 1, a pump cavity is formed on the pump body 1, an impeller 2 is arranged in the pump cavity, the motor 11 drives the impeller 2 to rotate, a water inlet 12 and a water outlet 13 are formed on the pump body 1, and the water inlet 12 and the water outlet 13 are communicated with the pump cavity.

[0029] The lower end of the pump body 1 is fixedly connected with a support frame 3 through bolts, and a plurality of water inlet grooves 31 are formed on the side wall of the support frame 3.

[0030] When the motor 11 is started, the impeller 2 rotates, water is sucked into the pump cavity from the water inlet grooves 31 and the water inlet 12, and then the water is injected into the water outlet 13 from the pump cavity.

[0031] A support disc 4 is arranged at the end of the impeller 2 towards the water inlet 12, and the support disc 4 is fixed to the inner wall of the pump cavity through a cross plate 42. A support part 5 is connected to the side of the support disc 4 towards the impeller 2.

[0032] A mounting hole 41 is formed on the support disc 4, and the mounting hole 41 is coaxially arranged with the support disc 4. A protruding column 51 is integrally connected to the support part 5, and the protruding column 51 is coaxially arranged with the support part 5. The protruding column 51 is threadedly connected in the mounting hole 41. A limiting assembly 6 for limiting the rotation of the protruding column 51 is arranged on the inner wall of the mounting hole 41.

[0033] The limiting assembly 6 comprises a jackscrew 61, a limiting hole 62, a limiting column 63, a limiting groove 64 and an elastic sheet 65. The limiting hole 62 is formed on the inner wall of the mounting hole 41, and the limiting hole 62 is communicated with the outer wall of the support disc 4. The limiting column 63 is slidably connected in the limiting hole 62, the elastic sheet 65 is located in the limiting hole 62, and the jackscrew 61 is threadedly connected on the limiting hole 62. The two ends of the elastic sheet 65 are respectively connected with the jackscrew 61 and the limiting column 63, and the elastic sheet 65 is a spring.

[0034] The end of the limiting column 63 is integrally connected with a hemispherical limiting part 66. The limiting groove 64 is opened on the outer wall of the convex column 51, the length direction of the limiting groove 64 is parallel to the axial direction of the convex column 51, and a plurality of limiting grooves 64 are evenly distributed along the axial center of the convex column 51. The limiting part 66 is embedded in the limiting groove 64 by the elastic force of the elastic sheet 65.

[0035] The edge of the supporting part 5 is integrally connected with a convex part 52 with a semicircular cross section, a plurality of convex parts 52 are evenly distributed along the axial center of the supporting part 5, and the impeller 2 is connected with a blade 74 through a sliding mechanism 7.

[0036] The sliding mechanism 7 comprises a sliding groove 71, a sliding block 72 and an elastic piece 73. The sliding groove 71 is opened on the impeller 2 and is located at the lower end of the impeller 2. A plurality of sliding grooves 71 are evenly distributed along the axial center of the impeller 2, the sliding block 72 is slidingly connected in the sliding groove 71, and the blade 74 is fixed on the sliding block 72 through a fastening screw 75. One end of the elastic piece 73 is connected with the inner wall of the sliding groove 71, and the other end of the elastic piece 73 is connected with the sliding block 72. The elastic piece 73 is a tension spring.

[0037] Among them, the cross section of the sliding groove 71 is T-shaped, and the cross section of the sliding block 72 is H-shaped. The length direction of the sliding groove 71 is arranged along the radial direction of the impeller 2. In order to avoid the sliding block 72 from being pulled out of the sliding groove 71, a plug is fixedly connected with the inner wall at the opening of the sliding groove 71.

[0038] A connecting rod 8 is fixedly connected with the outer wall of the blade 74, a contact wheel 81 is rotatably connected with the connecting rod 8, and the contact wheel 81 is rollingly connected with the outer wall of the supporting part 5.

[0039] When the motor 11 starts, the impeller 2 rotates, the sliding block 72 abuts against the inner wall of the sliding groove 71, the blade 74 rotates along with the sliding block 72 along the axial center of the impeller 2, the contact wheel 81 rolls along the outer wall of the supporting part 5 by the elastic force of the elastic piece 73, when the contact wheel 81 rolls on the convex part 52, the sliding block 72 moves along the length direction of the sliding groove 71, and the blade 74 extends out, when the contact wheel 81 separates from the convex part 52, the blade 74 is pulled back by the elastic force of the elastic piece 73, so that the blade 74 can move back and forth while rotating, thereby improving the cutting efficiency.

[0040] A protective cover 9 is connected with the impeller 2, the sliding groove 71 and the sliding block 72 are located in the interior of the protective cover 9, a connecting groove 91 is opened on the side wall of the protective cover 9, and the blade 74 extends out from the connecting groove 91.

[0041] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific implementation manners, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A submersible sewage pump with a cutting function, comprising a pump body (1), wherein a motor (11) is fixedly connected inside the pump body (1), a pump chamber is provided on the pump body (1), an impeller (2) is provided inside the pump chamber, the motor (11) drives the impeller (2) to rotate, an inlet (12) and an outlet (13) are provided on the pump body (1), both the inlet (12) and the outlet (13) are connected to the pump chamber, and a support plate (4) is provided at one end of the impeller (2) facing the inlet (12), characterized in that: The support disc (4) is fixed to the inner wall of the pump cavity, one side of the support disc (4) is connected with a support part (5), the edge of the support part (5) is fixedly connected with a convex part (52), a plurality of convex parts (52) are uniformly distributed along the axis of the support part (5), the impeller (2) is connected with a blade (74) through a sliding mechanism (7), the blade (74) is connected with a connecting rod (8), and the connecting rod (8) slides along the outer wall of the support part (5).

2. A submersible sewage pump with a cutting according to claim 1, characterized in that: The sliding mechanism (7) comprises a sliding groove (71), a sliding block (72) and an elastic piece (73), the sliding groove (71) is formed in the impeller (2), a plurality of sliding grooves (71) are uniformly distributed along the axis of the impeller (2), the sliding block (72) is slidably connected in the sliding groove (71) and connected with the blade (74), and one end of the elastic piece (73) is connected with the inner wall of the sliding groove (71), and the other end of the elastic piece (73) is connected with the sliding block (72).

3. A submersible sewage pump with a cutting according to claim 2, characterized in that: The impeller (2) is connected with a protective cover (9), the sliding groove (71) and the sliding block (72) are located in the protective cover (9), a connecting groove (91) is formed in the side wall of the protective cover (9), and the blade (74) extends out of the connecting groove (91).

4. A submersible sewage pump with a cutting according to claim 1, characterized in that: The connecting rod (8) is rotatably connected with a contact wheel (81), and the contact wheel (81) is rollingly connected to the outer wall of the support part (5).

5. A submersible sewage pump with a cutting according to claim 1, characterized in that: The support disc (4) is provided with a mounting hole (41), the support part (5) is connected with a convex column (51), the convex column (51) is screwed into the mounting hole (41), and a limiting assembly (6) for limiting the rotation of the convex column (51) is arranged on the inner wall of the mounting hole (41).

6. A submersible sewage pump with a cutting according to claim 5, characterized in that: The limiting assembly (6) comprises a jackscrew (61), a limiting hole (62), a limiting column (63), a limiting groove (64) and a spring piece (65), the limiting hole (62) is formed in the inner wall of the mounting hole (41) and communicates with the outer wall of the support disc (4), the limiting column (63) is slidably connected in the limiting hole (62), the spring piece (65) is located in the limiting hole (62), the jackscrew (61) is screwed on the limiting hole (62), the two ends of the spring piece (65) are connected with the jackscrew (61) and the limiting column (63) respectively, the end of the limiting column (63) is integrally connected with a hemispherical limiting part (66), the limiting groove (64) is formed in the outer wall of the convex column (51), the length direction of the limiting groove (64) is parallel to the axial direction of the convex column (51), a plurality of limiting grooves (64) are uniformly distributed along the axis of the convex column (51), and the limiting part (66) is used for being embedded in the limiting groove (64).

7. A submersible sewage pump with a cutting according to claim 6, characterized in that: The pump body (1) is fixedly connected with a support frame (3) through bolts, and a plurality of water inlet grooves (31) are formed in the side wall of the support frame (3).

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