Sewage pump cutterhead mounting structure

Abstract

The utility model relates to the technical field of sewage pumps, and discloses a sewage pump cutterhead installation structure which comprises a driving motor, a pump shell is arranged at the top end of the driving motor, the side edge of the pump shell is communicated with a water outlet pipe, and a cutterhead installation assembly is arranged at the top of the pump shell. According to the utility model, the cutterhead mounting assembly is arranged at the top of the pump shell, and when the cutterhead body and the crushing blades in the cutterhead mounting assembly are wound with filaments to influence the rotation of the middle transmission rod, a user can rotate and take down the top closing cover sleeved on the connecting ring; and meanwhile, a user can take down a fixed screw inserted into the cutter head body, so that a fixed insertion block is not propped against and fixed, the crushing blades can be quickly and conveniently taken down from the cutter head body, and the crushing efficiency is improved. Therefore, replacement and use of a user are facilitated, and overall mounting and dismounting of the cutterhead are more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage pump technical field, concretely is a sewage pump cutter head mounting structure. BACKGROUND

[0002] The sewage pump belongs to a kind of centrifugal impurity pump, it is mainly used to transport city sewage, such as paper scrap solid particle medium, and sewage pump often contains the fiber material that is easy to entangle or bunch in medium, so that pump flow passage is easy to be blocked, affect pump body work, so it needs to be protected by corresponding anti-blocking structure.

[0003] Through searching, the sewage pump cutter head mounting structure of the utility model provided by the authorized Chinese patent announcement No.CN 220956140 U belongs to water pump technical field.It solves the problem that the existing sewage pump is inconvenient to adjust the position of cutter head.The sewage pump cutter head mounting structure includes pump shell with water inlet hole in bottom, and the axis of water inlet hole is vertically arranged, annular step is formed on the inner wall of lower end of water inlet hole, annular step is coaxial with water inlet hole, and annular step is composed of annular side wall and annular bottom wall;Cutter head is horizontally arranged in annular step, and cutter head is threadedly connected with annular side wall.The sewage pump cutter head mounting structure is convenient for adjusting the gap between cutter head and impeller.

[0004] The sewage pump in the above-mentioned patent still has some shortcomings, the existing sewage pump is often installed with cutter head near water inlet for chopping impurities in water when working, but cutter head is difficult to disassemble and assemble, so that certain filamentous material such as cloth strip fabric is often entangled on cutter head during actual use, which can affect the rotation of cutter head, reduce the speed of cutter head, or directly cause cutter head to be stuck, affect normal use of user. Utility model content

[0005] In view of the shortcomings of the prior art, the utility model provides a sewage pump cutter head mounting structure, which solves the problem that the existing sewage pump is often installed with cutter head near water inlet for chopping impurities in water when working, but cutter head is difficult to disassemble and assemble, so that certain filamentous material such as cloth strip fabric is often entangled on cutter head during actual use, which can affect the rotation of cutter head, reduce the speed of cutter head, or directly cause cutter head to be stuck, affect normal use of user.

[0006] The utility model provides the following technical scheme: a sewage pump cutter head mounting structure, including drive motor, the top of drive motor is provided with pump shell, the side of pump shell is connected with water outlet pipe, the top of pump shell is provided with cutter head installation assembly;

[0007] The cutter head mounting assembly comprises a middle transmission rod rotatably arranged in the middle part of the pump shell, a driving shaft of the driving motor is fixedly connected with the bottom end of the middle transmission rod, an impeller is arranged on the middle transmission rod, two limiting key blocks are symmetrically fixed on the top end of the middle transmission rod, a cutter head body is sleeved on the top end of the middle transmission rod, two limiting key grooves are symmetrically formed in the bottom end of the cutter head body, the limiting key blocks are inserted into the limiting key grooves, a top screw sleeve is sleeved on the top end of the middle transmission rod, side edge insertion grooves are uniformly formed in the periphery of the cutter head body, fixed insertion blocks are inserted into the side edge insertion grooves, crushing blades are fixed on the fixed insertion blocks, the cutter head body and the fixed insertion blocks are connected through a fixed screw rod which is inserted through the cutter head body, fixed screw sleeves are symmetrically sleeved on the upper and lower ends of the fixed screw rod, and a top end insertion groove is formed in the top end of the middle transmission rod.

[0008] Preferred technical scheme one: the top end of the pump shell is provided with a connecting ring, the top end of the connecting ring is sleeved with a top closing cover, and the bottom end of the top closing cover is provided with a mounting insertion groove.

[0009] Preferred technical scheme two: the connecting ring is inserted into the mounting insertion groove, a limiting top column is fixed in the middle part of the top closing cover, and the top end of the top closing cover is provided with a water inlet pipe.

[0010] Preferred technical scheme three: the side edge of the driving motor is provided with a mounting plate.

[0011] The scheme can make the installation of the driving motor more convenient.

[0012] Preferred technical scheme four: the top end of the middle transmission rod is provided with threads on the outside, and the top screw sleeve is sleeved on the top end of the middle transmission rod.

[0013] The scheme can make the top screw sleeve more firmly sleeved on the top end of the middle transmission rod.

[0014] Preferred technical scheme five: the inner wall of the mounting insertion groove is provided with internal threads, and the outside of the connecting ring is provided with external threads.

[0015] The scheme can make the top closing cover and the connecting ring more convenient to disassemble and assemble through thread connection.

[0016] Compared with the prior art, the sewage pump cutter head mounting structure has the following beneficial effects:

[0017] (1) The utility model discloses a cutter head installation assembly is provided on the top of the pump shell, wherein when the rotation of the middle transmission rod is affected by the silk on the cutter head body and the crushing blade in the cutter head installation assembly, the user can rotate and take down the top closing cover that is sleeved on the connecting ring, and then the silk wound on the crushing blade can be pulled off, so that the cleaning of the silk is more convenient, and when a single crushing blade is damaged, the user can take down the fixed screw rod inserted on the cutter head body, so that the fixed insertion block is not resisted and fixed, and the crushing blade can be quickly and conveniently taken off from the cutter head body, to facilitate the replacement of the user, and the overall installation and disassembly of the cutter head are more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure perspective view of the utility model;

[0019] Figure 2 It is the structure exploded view of the utility model;

[0020] Figure 3 It is the structure of the utility model; Figure 2 It is the structure enlarged view of the limiting key block;

[0021] Figure 4 It is the structure of the utility model; Figure 3 It is the structure enlarged view of the cutter head body;

[0022] Figure 5 It is the structure of the utility model; Figure 1 It is the structure enlarged view of the top closing cover.

[0023] In the drawing: 1, drive motor; 2, pump shell; 3, water outlet pipe; 4, cutter head installation assembly;

[0024] 401, middle transmission rod; 402, impeller; 403, limiting key block; 404, cutter head body; 405, limiting key groove; 406, top screw sleeve; 407, side edge slot; 408, fixed insertion block; 409, crushing blade; 410, fixed screw rod; 411, fixed screw sleeve; 412, top end slot; 413, connecting ring; 414, top closing cover; 415, installation slot; 416, limiting top column; 417, water inlet pipe. DETAILED DESCRIPTION

[0025] Please refer to Figures 1-5 ,

[0026] Embodiment one: a sewage pump cutter head installation structure, including drive motor 1, the top of drive motor 1 is provided with pump shell 2, the side of pump shell 2 is communicated with water outlet pipe 3, and the top of pump shell 2 is provided with cutter head installation assembly 4.

[0027] The cutter head mounting assembly 4 comprises a middle transmission rod 401 rotatably arranged in the middle part of the pump shell 2, the driving shaft of the driving motor 1 is fixedly connected with the bottom end of the middle transmission rod 401, an impeller 402 is arranged on the middle transmission rod 401, two limiting key blocks 403 are symmetrically fixed on the top end of the middle transmission rod 401, a cutter head body 404 is sleeved on the top end of the middle transmission rod 401, two limiting key grooves 405 are symmetrically arranged on the bottom end of the cutter head body 404, the limiting key blocks 403 are inserted into the limiting key grooves 405, a top screw sleeve 406 is sleeved on the top end of the middle transmission rod 401, side edge insertion grooves 407 are uniformly arranged on the periphery of the cutter head body 404, and fixed insertion blocks 408 are inserted into the side edge insertion grooves 407.

[0028] The fixed insertion blocks 408 are fixedly provided with broken blades 409, the cutter head body 404 and the fixed insertion blocks 408 are connected through the fixed screw rods 410 which are inserted through the cutter head body 404, the upper and lower ends of the fixed screw rods 410 are symmetrically sleeved with fixed screw sleeves 411, a top end insertion groove 412 is arranged on the top end of the middle transmission rod 401, a connecting ring 413 is arranged on the top end of the pump shell 2, the top end of the connecting ring 413 is sleeved with a top closing cover 414, an installation insertion groove 415 is arranged on the bottom end of the top closing cover 414, the connecting ring 413 is inserted into the installation insertion groove 415, a limiting top column 416 is fixedly arranged on the middle part of the top closing cover 414, and a water inlet pipe 417 is arranged on the top end of the top closing cover 414.

[0029] In the embodiment, the side of the driving motor 1 is provided with a mounting plate.

[0030] Therefore, the installation of the driving motor 1 is more convenient.

[0031] In the embodiment, the top end of the middle transmission rod 401 is provided with a screw thread, and the top screw sleeve 406 is sleeved on the top end of the middle transmission rod 401.

[0032] Therefore, the top screw sleeve 406 is more firmly sleeved on the top end of the middle transmission rod 401.

[0033] In the embodiment, the inner wall of the installation insertion groove 415 is provided with an inner screw thread, and the outer side of the connecting ring 413 is provided with an outer screw thread.

[0034] Therefore, the top closing cover 414 and the connecting ring 413 are more conveniently connected and disassembled through the screw threads.

[0035] In the present embodiment, since the existing sewage pump is often installed with a cutter head near the water inlet for chopping the impurities in the water during operation, but the cutter head is difficult to disassemble, so that the cutter head is often wound with certain filamentous materials such as cloth strips in actual use, which will affect the rotation of the cutter head, and the cutter head will be directly jammed, which will affect the normal use of the user.

[0036] In summary, when the surface of the broken blade 409 on the cutter head installation assembly 4 in the pump shell 2 is wound with more filamentous materials and affects the driving of the middle transmission rod 401, the user can rotate the top closing cover 414 to make the top closing cover 414 rotate and be removed from the connecting ring 413, and at this time, the broken blade 409 arranged in the pump shell 2 is exposed in the user's field of vision.

[0037] The user can first remove the top screw sleeve 406 sleeved on the top end of the middle transmission rod 401, and then the user can pull out the cutter head body 404 from the top of the middle transmission rod 401. Since the limiting key block 403 is clamped in the limiting key groove 405, the user can pull out the cutter head body 404 more conveniently, and then the user can pull out the cloth strips or filamentous materials wound on the broken blade 409, which is more convenient and fast to clean up.

[0038] When a broken blade 409 is damaged, the user can also remove the fixed screw sleeve 411 sleeved on the upper and lower ends of the fixed screw rod 410, so that the fixed insertion block 408 inserted in the side slot 407 is not fixed, and the user can quickly pull out the fixed insertion block 408 from the side slot 407, so as to disassemble and replace the broken blade 409 arranged on the single fixed insertion block 408, which makes the user more convenient to disassemble and assemble the cutter head body 404 and the broken blade 409.

Claims

1. A sewage pump impeller mounting structure comprising a drive motor (1), characterized in that: The top end of the driving motor (1) is provided with a pump shell (2), the side of the pump shell (2) is communicated with a water outlet pipe (3), and the top of the pump shell (2) is provided with a cutter head mounting assembly (4). The cutter head mounting assembly (4) comprises a middle transmission rod (401) rotatably arranged in the middle of the pump shell (2), the driving shaft of the driving motor (1) is fixedly connected with the bottom end of the middle transmission rod (401), the middle transmission rod (401) is provided with an impeller (402), two limiting key blocks (403) are symmetrically fixed on the top end of the middle transmission rod (401), the top end of the middle transmission rod (401) is sleeved with a cutter head body (404), two limiting key grooves (405) are symmetrically formed in the bottom end of the cutter head body (404), the limiting key blocks (403) are inserted into the limiting key grooves (405), the top end of the middle transmission rod (401) is sleeved with a top screw sleeve (406), a plurality of side insertion grooves (407) are uniformly formed around the cutter head body (404), a plurality of fixed insertion blocks (408) are inserted into the side insertion grooves (407), a plurality of crushing blades (409) are fixed on the fixed insertion blocks (408), the cutter head body (404) and the fixed insertion blocks (408) are connected through a fixed screw rod (410) which is inserted through the cutter head body (404), a plurality of fixed screw sleeves (411) are symmetrically sleeved on the upper and lower ends of the fixed screw rod (410), and a top end insertion groove (412) is formed in the top end of the middle transmission rod (401).

2. A sewage pump impeller mounting structure according to claim 1, characterized in that: The top end of the pump shell (2) is provided with a connecting ring (413), the top end of the connecting ring (413) is sleeved with a top closing cover (414), and the bottom end of the top closing cover (414) is provided with a mounting insertion groove (415).

3. A sewage pump impeller mounting structure according to claim 2, wherein: The connecting ring (413) is inserted into the mounting insertion groove (415), the middle of the top closing cover (414) is fixed with a limiting top column (416), and the top end of the top closing cover (414) is provided with a water inlet pipe (417).

4. A sewage pump impeller mounting structure according to claim 3, wherein: The side of the driving motor (1) is provided with a mounting plate.

5. A sewage pump impeller mounting structure according to claim 4, wherein: The top end of the middle transmission rod (401) is provided with a thread, and the top screw sleeve (406) is sleeved on the top end of the middle transmission rod (401).

6. A sewage pump impeller mounting structure according to claim 5, wherein: The inner wall of the mounting insertion groove (415) is provided with an internal thread, and the outer side of the connecting ring (413) is provided with an external thread.

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