Motor external pump body capable of being used for high-concentration sewage and sludge

Abstract

The utility model discloses a motor external pump body capable of being used for high-concentration sewage and sludge, and relates to the field of sewage and sludge pumps, the motor external pump body comprises a motor, the output end of the motor is provided with a cutting assembly for crushing impurities, and the outer side of the cutting assembly is provided with a sealing assembly; the cutting assembly comprises a rotating shaft rod, one end of the rotating shaft rod is fixedly connected with an output shaft of the motor, a centrifugal wheel is fixedly connected to the surface of the rotating shaft rod, a cutting blade is arranged at the lower end of the centrifugal wheel, and the cutting blade is fixedly connected with the lower end of the rotating shaft rod; liquid and the motor are isolated through the outer box body, only components at the output end of the motor are arranged in the liquid, and the motor is arranged outside the liquid, so that the temperature of the liquid cannot be increased, and the dissolved oxygen concentration and the spreading culture of aerobic microorganisms can be reduced due to the increase of the temperature of the liquid, so that the working efficiency of an aerobic process can be improved; and the motor is arranged outside, the situation that the pump body is taken out from liquid and then cleaned to be maintained like a submersible pump on the market at present is not needed, and compared with the submersible pump on the market at present, the maintenance time is saved, and meanwhile the maintenance cost is greatly saved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage sludge pumps, in particular to a motor-external pump body which can be used for high-concentration sewage sludge. Background Art

[0002] The submersible pumps currently on the market have a history of several decades and can basically meet the general process requirements. However, when there are special process requirements, ordinary submersible pumps show their shortcomings.

[0003] Ordinary submersible pumps require a relatively high liquid level to work properly because the entire pump body needs to be immersed in liquid, which limits the low liquid level process requirements. The entire pump body needs to be immersed in liquid, and the liquid is used to cool the motor. The motor generates heat when working, which will cause the liquid temperature to rise. In the microbial treatment process, microorganisms cannot survive at too high a temperature, and the process requirements cannot be met. According to the relationship between liquid temperature and saturated dissolved oxygen, the dissolved oxygen concentration will also decrease relatively when the liquid temperature rises, which has a serious adverse effect on the aerobic process. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the above problems existing in the prior art, the utility model provides a motor-mounted pump body that can be used for high-concentration sewage sludge.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a motor-mounted pump body that can be used for high-concentration sewage sludge, comprising a motor, a cutting assembly for crushing impurities is provided at the output end of the motor, and a sealing assembly is provided on the outside of the cutting assembly;

[0008] The cutting assembly includes a rotating shaft rod, one end of which is fixedly connected to the output shaft of the motor, a centrifugal wheel is fixedly connected to the surface of the rotating shaft rod, and a cutting blade is provided at the lower end of the centrifugal wheel, and the cutting blade is fixedly connected to the lower end of the rotating shaft rod;

[0009] The sealing assembly includes a flange A, which is fixedly connected to the output end of the motor. A matching flange B is provided on the lower surface of the flange A, and the lower surface of the flange B is fixedly connected to the outer box.

[0010] As a preferred solution of the adjustable submersible pump described in the utility model, a centrifugal cover is provided on the outside of the centrifugal wheel, the upper end of the centrifugal cover is fixedly connected to the inner wall of the outer box body, the lower end of the centrifugal cover is provided with a crushing opening, and the cutting blade is located below the crushing opening.

[0011] As a preferred solution of the adjustable submersible pump of the present invention, the output end of the centrifugal cover is fixedly connected to a water outlet pipe, and one end of the water outlet pipe passes through the side wall of the outer box.

[0012] As a preferred solution of the adjustable submersible pump of the present invention, the side wall of the outer box is fixedly connected with a water inlet pipe, and a sealing ring is provided at the connection between the outer box and the water outlet pipe, and the sealing ring is threadedly connected to the side wall of the outer box.

[0013] (3) Beneficial effects

[0014] The utility model provides a motor-mounted pump body that can be used for high-concentration sewage sludge. It has the following beneficial effects:

[0015] 1. The liquid and the motor are isolated by the outer box. Only the components at the motor output end are placed in the liquid. The motor is placed outside. When the motor is running, the heat generated by the motor will not be absorbed by the liquid, thereby not causing the liquid temperature to rise. Since the increase in liquid temperature will reduce the dissolved oxygen concentration and the expansion of microorganisms, it can improve the working efficiency of the aerobic process. The motor is placed outside. When a problem occurs, there is no need to remove the device from the liquid. Compared with the submersible pumps currently on the market, it saves maintenance time and greatly saves maintenance costs.

[0016] 2. After turning on the motor, the output shaft of the motor drives the centrifugal wheel under the rotating shaft to rotate. When the centrifugal wheel rotates, negative pressure is generated in the centrifugal cover, and water is transported into the centrifugal cover through the crushing port. The cooperation between the cutting blade and the crushing port can crush the impurities in the water, avoiding clogging of the water outlet pipe during the re-transportation process, thereby improving the drainage efficiency.

[0017] 3. By setting up an outer box, the cutting blade and the centrifugal cover can be sealed and isolated, so that sewage can better enter the centrifugal cover, and at the same time, it can prevent the cutting blade from being damaged by hard impurities from the outside. The outer box can block the gap at the connection through the flange A, flange B and sealing ring set at the motor and the outlet pipe, thereby improving the sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic structural diagram of the entire utility model.

[0020] Figure 2It is a schematic diagram of the internal structure of the outer box of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the centrifugal cover of the utility model.

[0022] Figure 4 It is a structural schematic diagram of the centrifugal wheel and cutting blade of the utility model.

[0023] In the figure, 1. Motor; 2. Sealing assembly; 201. Flange A; 202. Flange B; 203. Outer box; 204. Water inlet pipe; 205. Sealing ring; 3. Cutting assembly; 301. Centrifugal cover; 302. Crushing port; 303. Rotating shaft; 304. Centrifugal wheel; 305. Cutting blade; 306. Water outlet pipe; 4. Mounting bracket. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] Example 1

[0026] Reference Figure 1 、 Figure 3 and Figure 4 , which is the first embodiment of the utility model, provides a motor-mounted pump body that can be used for high-concentration sewage sludge, including a motor 1, a cutting component 3 for crushing impurities is provided at the output end of the motor 1, and a sealing component 2 is provided on the outside of the cutting component 3;

[0027] The cutting assembly 3 includes a rotating shaft rod 303, one end of which is fixedly connected to the output shaft of the motor 1, a centrifugal wheel 304 is fixedly connected to the surface of the rotating shaft rod 303, and a cutting blade 305 is provided at the lower end of the centrifugal wheel 304, and the cutting blade 305 is fixedly connected to the lower end of the rotating shaft rod 303.

[0028] Specifically, a centrifugal cover 301 is provided on the outside of the centrifugal wheel 304, the upper end of the centrifugal cover 301 is fixedly connected to the inner wall of the outer box body 203, the lower end of the centrifugal cover 301 is provided with a crushing opening 302, and the cutting blade 305 is located below the crushing opening 302. The output end of the centrifugal cover 301 is fixedly connected to a water outlet pipe 306, and one end of the water outlet pipe 306 passes through the side wall of the outer box body 203.

[0029] Furthermore, after the motor 1 is turned on, the output shaft of the motor 1 drives the centrifugal wheel 304 under the rotating shaft rod 303 to rotate. When the centrifugal wheel 304 rotates, negative pressure is generated in the centrifugal cover 301, and water is transported into the centrifugal cover 301 through the crushing opening 302. The cooperation between the cutting blade 305 and the crushing opening 302 can crush impurities in the water, avoiding clogging of the water outlet pipe 306 during the transportation process, thereby improving drainage efficiency.

[0030] Example 2

[0031] Reference Figure 1 and Figure 2 , which is the second embodiment of the present utility model, is based on the previous embodiment. The sealing assembly 2 includes a flange A201, which is fixedly connected to the output end of the motor 1. The lower surface of the flange A201 is provided with a matching flange B202, and the lower surface of the flange B202 is fixedly connected to the outer box body 203.

[0032] Specifically, the side wall of the outer box body 203 is fixedly connected with the water inlet pipe 204 , and the connection between the outer box body 203 and the water outlet pipe 306 is provided with a sealing ring 205 , and the sealing ring 205 is threadedly connected to the side wall of the outer box body 203 .

[0033] Furthermore, by setting up the outer box body 203, the cutting blade 305 and the centrifugal cover 301 can be sealed and isolated, so that sewage can better enter the centrifugal cover 301, and at the same time, external hard impurities can be prevented from damaging the cutting blade 305. The outer box body 203 can block the gap at the connection through the flange A201, flange B202 and sealing ring 205 set at the motor 1 and the water outlet pipe 306, thereby improving the sealing.

[0034] Working principle: In the microbial treatment process, the influence of temperature on microorganisms is quite serious. When the temperature exceeds a certain level, the microorganisms will not reproduce. When the temperature exceeds the survival temperature of the microorganisms, the microorganisms will die. Therefore, the liquid and the motor 1 are isolated through the outer box 203. Only the components at the output end of the motor 1 are placed in the liquid. The motor 1 is placed outside. When the motor 1 is running, the heat generated by the motor 1 will not be absorbed by the liquid, thereby not causing the liquid temperature to rise. Since the increase in liquid temperature will reduce the dissolved oxygen concentration and the expansion of microorganisms, the working efficiency of the aerobic process can be improved. The motor 1 is placed outside. When a problem occurs, there is no need to remove the device from the liquid. Compared with the diving devices currently on the market The pump saves maintenance time and greatly saves maintenance costs; the output shaft of the motor 1 drives the centrifugal wheel 304 under the rotating shaft rod 303 to rotate, and the centrifugal wheel 304 generates negative pressure in the centrifugal cover 301 while rotating, and the water is transported to the centrifugal cover 301 through the crushing opening 302, and the impurities in the water can be crushed by the cooperation between the cutting blade 305 and the crushing opening 302, so as to avoid clogging of the water outlet pipe 306 during the re-transportation process, thereby improving the drainage efficiency, and the outer box body 203 arranged outside the centrifugal cover 301 can seal and isolate the cutting blade 305 and the centrifugal cover 301, so that the sewage can better enter the centrifugal cover 301, and at the same time, it can prevent the cutting blade 305 from being damaged by hard impurities from the outside.

[0035] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A motor-mounted pump body for high-concentration sewage sludge, comprising a motor (1), characterized in that: The output end of the motor (1) is provided with a cutting assembly (3) for crushing impurities, and a sealing assembly (2) is provided on the outside of the cutting assembly (3); The cutting assembly (3) comprises a rotating shaft rod (303), one end of the rotating shaft rod (303) is fixedly connected to the output shaft of the motor (1), a centrifugal wheel (304) is fixedly connected to the surface of the rotating shaft rod (303), a cutting blade (305) is provided at the lower end of the centrifugal wheel (304), and the cutting blade (305) is fixedly connected to the lower end of the rotating shaft rod (303); The sealing assembly (2) comprises a flange A (201), wherein the flange A (201) is fixedly connected to the output end of the motor (1), a matching flange B (202) is provided on the lower surface of the flange A (201), and an outer box (203) is fixedly connected to the lower surface of the flange B (202).

2. The motor-mounted pump body for high-concentration sewage sludge according to claim 1, characterized in that: A centrifugal cover (301) is provided on the outer side of the centrifugal wheel (304), the upper end of the centrifugal cover (301) is fixedly connected to the inner wall of the outer box (203), and a crushing opening (302) is provided at the lower end of the centrifugal cover (301), and the cutting blade (305) is located below the crushing opening (302).

3. The motor-mounted pump body for high-concentration sewage sludge according to claim 2, characterized in that: The output end of the centrifugal cover (301) is fixedly connected to a water outlet pipe (306), and one end of the water outlet pipe (306) passes through the side wall of the outer box body (203).

4. The motor-mounted pump body for high-concentration sewage sludge according to claim 1 is characterized in that: The side wall of the outer box (203) is fixedly connected to a water inlet pipe (204), and a sealing ring (205) is provided at the connection between the outer box (203) and the water outlet pipe (306). The sealing ring (205) is threadedly connected to the side wall of the outer box (203).

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