Built-in explosion-proof submersible sand-discharging and sewage-discharging electric pump

Abstract

The utility model discloses a built-in flame-proof type submersible desilting and sewage draining electric pump, which relates to the technical field of electric pumps, and comprises a check valve, a protective shell and an electric pump, a pressure-resistant protective assembly is arranged in the electric pump, the pressure-resistant protective assembly comprises an upper bearing seat arranged at the left end in the electric pump, a bearing is arranged on the right side surface of the upper bearing seat, and the lower bearing seat is arranged on the right side surface of the upper bearing seat. A pressure-resistant ring is arranged at the left end of the outer wall of the bearing, a lower bearing seat is arranged on the right side face of the bearing, an impeller is arranged on the right side face of the lower bearing seat, a check valve drives the rotor to rotate through a valve rod and drives the bearing to rotate, the electric pump can be conveniently regulated and used, and the use stability effect of the bearing can be improved through the arranged upper bearing seat and lower bearing seat; the pressure-resistant ring can improve the effect of preventing the bearing from being extruded by the outside when the bearing is used, the protective cover can protect and guide the outside of the bearing, the reinforcing ring and the limiting ring can improve the rice effect of the bearing when the bearing is used, and the impeller can improve the use stability effect of the bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of electric pumps, in particular to a built-in explosion-proof submersible sand and sewage discharge electric pump. Background Art

[0002] The explosion-proof submersible pump for sewage and sand discharge in mines is an electric drainage and irrigation equipment that combines a pump and a motor. It can operate continuously underwater for a long time and is widely used in the automatic drainage of coal mine shafts, inclined shafts and scattered coal mud at the bottom of the well. For the internal electric pump, water flows through the motor interlayer, which effectively extends the service life of the electric pump; for the external electric pump, the impeller adopts a double-channel large flow structure, which runs smoothly, has strong sewage discharge capacity, is anti-winding, has no clogging, and has the characteristics of small size, light weight and easy to carry. The motor generally adopts excellent explosion-proof structural performance and a high protection level. It is suitable for use with water pumps in explosive gas environments such as methane or coal dust, mining faces and tunnels in mines with explosion hazards, etc. The temperature of the conveying medium should not exceed 40°C. However, today's explosion-proof submersible pumps still have problems such as poor sealing and unstable performance.

[0003] In the patent with the publication number CN205154665U, a built-in explosion-proof submersible sand and sewage discharge electric pump for mining is proposed. The patent includes a check valve seat, an outer cover, an upper bearing seat, a bearing, a rotor, a stator winding shell, a lower bearing seat, a mechanical seal ring, a water inlet section, an impeller, and a base. The electric pump uses an O-shaped rubber seal ring as a static seal, which has good structural performance. The rubber vulcanization curve control technology is used to ensure the moisture-resistant and anti-aging quality and sealing performance of the O-shaped ring. The dynamic seal uses two sets of mechanical seal rings 9, and has oil chamber isolation protection, which effectively provides lubrication for the rotating friction pair, forms a fluid film lubrication protection, and releases the heat accumulated during the movement, thereby extending the service life of the mechanical seal ring 9 and ensuring the sealing performance. The fluid components of the electric pump are made of wear-resistant alloy cast iron, and the water pump part adopts fluid mechanical design and balancing technology, which effectively extends the service life of the electric pump. However, there are still the following problems in this patent:

[0004] The existing electric pump does not have the function of protecting the internal bearings from pressure when in use, which leads to poor safety effect and poor stability in use.

[0005] In view of the above problems, it is necessary to design an internally mounted flameproof submersible sand and sewage discharge electric pump to overcome the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a built-in flameproof submersible sand and sewage discharge electric pump, which can effectively solve the problems in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] An internal explosion-proof submersible sand and sewage discharge electric pump comprises a check valve, a protective shell and an electric pump, wherein the right end of the outer wall of the check valve is provided with a protective shell, the right side surface of the protective shell is provided with an electric pump, and the interior of the electric pump is provided with a pressure-resistant protective component;

[0009] The pressure-resistant protection assembly comprises an upper bearing seat arranged at the left end inside the electric pump, a bearing is arranged on the right side of the upper bearing seat, a protective cover is arranged in the middle of the outer wall of the bearing, a pressure-resistant ring is arranged on the left end of the outer wall of the bearing, a reinforcement ring is arranged on the blocking of the inner wall of the protective cover, a sealing ring is arranged on the right end of the inner wall of the protective cover, a lower bearing seat is arranged on the right side of the bearing, a limiting ring is arranged on the right end of the inner wall of the bearing, and an impeller is arranged on the right side of the lower bearing seat;

[0010] A locking base is arranged on the right side of the impeller, a limit plate is installed on the right side of the locking base, a valve stem is installed on the right side of the check valve, and a rotor is arranged on the right side of the valve stem.

[0011] As a preferred solution of the utility model, the check valve and the protective shell are detachably connected, the protective shell and the electric pump are detachably connected, the electric pump and the locking base are detachably connected, and the locking base and the limit plate are detachably connected.

[0012] As a preferred solution of the utility model, the check valve and the valve stem are detachably connected, the valve stem and the rotor are detachably connected, and the right side surface of the rotor does not contact the left side surface of the upper bearing seat.

[0013] As a preferred solution of the utility model, the upper bearing seat and the bearing are detachably connected, the bearing and the lower bearing seat are detachably connected, and the anti-pressure ring and the bearing are detachably connected.

[0014] As a preferred solution of the utility model, the bearing and the protective cover are detachably connected, the protective cover and the reinforcement ring are detachably connected, and the bearing and the limit ring are detachably connected.

[0015] As a preferred solution of the utility model, the right side surface of the lower bearing seat contacts the left side surface of the impeller, and the right side surface of the impeller does not contact the left side surface of the locking base.

[0016] Beneficial Effects

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The built-in explosion-proof submersible sand and sewage discharge electric pump drives the rotor to rotate through the valve stem through the check valve, drives the bearing to rotate, and can conveniently control the use of the electric pump. The upper bearing seat and the lower bearing seat can improve the stability of the bearing in use. The anti-pressure ring can improve the protection effect of the bearing against external compression during use. The protective cover guides the bearing to protect the foreign currency. The reinforcement ring and the limit ring improve the stability of the bearing in use. The impeller improves the stability of the bearing in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the valve stem structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the compression protection component of the utility model.

[0022] In the figure: 1. check valve; 2. protective shell; 3. electric pump; 4. pressure-resistant protection assembly; 5. locking base; 6. limit plate; 7. valve stem; 8. rotor; 401. upper bearing seat; 402. pressure-resistant ring; 403. reinforcement ring; 404. protective cover; 405. bearing; 406. sealing ring; 407. limit ring; 408. lower bearing seat; 409. impeller. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-3 As shown, a built-in flameproof submersible sand and sewage discharge electric pump comprises a check valve 1, a protective shell 2 and an electric pump 3. The right end of the outer wall of the check valve 1 is provided with the protective shell 2, the right side of the protective shell 2 is provided with the electric pump 3, and the interior of the electric pump 3 is provided with a pressure-resistant protective component 4;

[0025] The pressure-resistant protection component 4 includes an upper bearing seat 401 arranged at the left end inside the electric pump 3, a bearing 405 is arranged on the right side of the upper bearing seat 401, a protective cover 404 is arranged in the middle of the outer wall of the bearing 405, an anti-pressure ring 402 is arranged on the left end of the outer wall of the bearing 405, a reinforcement ring 403 is arranged on the blocking of the inner wall of the protective cover 404, a sealing ring 406 is arranged on the right end of the inner wall of the protective cover 404, a lower bearing seat 408 is arranged on the right side of the bearing 405, a limiting ring 407 is arranged on the right end of the inner wall of the bearing 405, and an impeller 409 is arranged on the right side of the lower bearing seat 408;

[0026] A locking base 5 is provided on the right side of the impeller 409, a limit plate 6 is installed on the right side of the locking base 5, a valve stem 7 is installed on the right side of the check valve 1, and a rotor 8 is provided on the right side of the valve stem 7;

[0027] The check valve 1 is detachably connected to the protective shell 2, the protective shell 2 is detachably connected to the electric pump 3, the electric pump 3 is detachably connected to the locking base 5, the locking base 5 is detachably connected to the limit plate 6, the check valve 1 is detachably connected to the valve stem 7, the valve stem 7 is detachably connected to the rotor 8, the right side surface of the rotor 8 does not contact the left side surface of the upper bearing seat 401, the upper bearing seat 401 is detachably connected to the bearing 405, the bearing 405 is detachably connected to the lower bearing seat 408, the anti-pressure ring 402 is detachably connected to the bearing 405, the bearing 405 is detachably connected to the protective cover 404, the protective cover 404 is detachably connected to the reinforcement ring 403, the bearing 405 is detachably connected to the limit ring 407, the right side surface of the lower bearing seat 408 is in contact with the left side surface of the impeller 409, and the right side surface of the impeller 409 is not in contact with the left side surface of the locking base 5;

[0028] Among them, the check valve 1 drives the rotor 8 to rotate through the valve stem 7, and drives the bearing 405 to rotate, which can facilitate the regulation and use of the electric pump 3. The upper bearing seat 401 and the lower bearing seat 408 can improve the stability of the use of the bearing 405. The anti-pressure ring 402 can improve the protection effect of the bearing 405 from external squeezing during use. The protective cover 404 provides foreign currency protection and guidance for the bearing 405. The reinforcement ring 403 and the limit ring 407 both improve the rice effect of the bearing 405 during use. The impeller 409 improves the stability of the use of the bearing 405.

[0029] It should be noted that the utility model is a built-in explosion-proof submersible sand and sewage discharge electric pump. When in use, the check valve 1 drives the rotor 8 to rotate through the valve stem 7, and the protective shell 2 protects the valve stem 7. The upper bearing seat 401 and the lower bearing seat 408 are used to limit the use of the bearing 405. The anti-pressure ring 402 can protect the bearing 405 from pressure when the electric pump 3 is squeezed. The reinforcement ring 403 and the limit ring 407 are used to seal and protect the bearing 405. The rotation of the impeller 409 can improve the stability of the use of the bearing 405.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A built-in flameproof submersible electric pump for removing sand and sewage, comprising a check valve (1), a protective shell (2) and an electric pump (3), characterized in that: A protective shell (2) is arranged at the right end of the outer wall of the check valve (1), an electric pump (3) is arranged on the right side of the protective shell (2), and a pressure-resistant protective component (4) is arranged inside the electric pump (3); The pressure-resistant protection component (4) comprises an upper bearing seat (401) arranged at the left end inside the electric pump (3); a bearing (405) is arranged on the right side of the upper bearing seat (401); a protective cover (404) is arranged in the middle of the outer wall of the bearing (405); a pressure-resistant ring (402) is arranged at the left end of the outer wall of the bearing (405); a reinforcement ring (403) is arranged on the inner wall of the protective cover (404); a sealing ring (406) is arranged at the right end of the inner wall of the protective cover (404); a lower bearing seat (408) is arranged on the right side of the bearing (405); a limiting ring (407) is arranged at the right end of the inner wall of the bearing (405); and an impeller (409) is arranged on the right side of the lower bearing seat (408); The right side surface of the impeller (409) is provided with a locking base (5), the right side surface of the locking base (5) is installed with a limit plate (6), the right side surface of the check valve (1) is installed with a valve stem (7), and the right side surface of the valve stem (7) is provided with a rotor (8).

2. According to claim 1, a built-in flameproof submersible sand and sewage discharge electric pump is characterized in that: The check valve (1) is detachably connected to the protective shell (2), the protective shell (2) is detachably connected to the electric pump (3), the electric pump (3) is detachably connected to the locking base (5), and the locking base (5) is detachably connected to the limiting plate (6).

3. The internal flameproof submersible sand and sewage discharge electric pump according to claim 1 is characterized by: The check valve (1) and the valve stem (7) are detachably connected, and the valve stem (7) and the rotor (8) are detachably connected, and the right side surface of the rotor (8) does not contact the left side surface of the upper bearing seat (401).

4. The internal flameproof submersible sand and sewage discharge electric pump according to claim 1 is characterized in that: The upper bearing seat (401) and the bearing (405) are detachably connected, the bearing (405) and the lower bearing seat (408) are detachably connected, and the anti-pressure ring (402) and the bearing (405) are detachably connected.

5. The internal flameproof submersible sand and sewage discharge electric pump according to claim 1 is characterized by: The bearing (405) and the protective cover (404) are detachably connected, the protective cover (404) and the reinforcement ring (403) are detachably connected, and the bearing (405) and the limiting ring (407) are detachably connected.

6. The internal flameproof submersible sand and sewage discharge electric pump according to claim 1 is characterized by: The right side surface of the lower bearing seat (408) contacts the left side surface of the impeller (409), and the right side surface of the impeller (409) does not contact the left side surface of the locking base (5).

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