A mine desilting pump with stirring function, method and stirring and crushing device thereof

Abstract

The application discloses a mine sand discharging pump with a stirring function, a method and a stirring and crushing device thereof, and coaxially drives a secondary crushing device and the stirring and crushing device by a motor driving device, so that the mine sand discharging pump is compact in structure, small in size and high in transmission efficiency, and the cost of stirring is not additionally increased. The sundries in sewage are crushed three times in the mine sand discharging pump; firstly, the sundries in the sewage are rapidly ground into small particles or particles smaller than the caliber of the annular inward collecting channel in the rotation of the first crushing tooth and the second crushing tooth, then sequentially enter the lower crushing cavity and the upper crushing cavity to perform the second crushing and the third crushing on the sewage in the cavities, the sundries are continuously crushed twice by the crushing wheel, the crushing effect is improved, and finally, the sewage is discharged from the upper port.

Description

Technical Field

[0001] This invention relates to a mine sand pump, and more particularly to a mine sand pump with a stirring function, a method thereof, and a stirring and crushing device thereof. Background Technology

[0002] The need for drainage in underground coal mine working faces requires the use of mine sand pumps. To meet the trend of automation in mine drainage, a submersible sand pump with a mixing function is needed. This submersible sand pump combines the functions of a submersible pump and a mixer, which can first suspend the solid particles deposited at the bottom of the water tank before carrying out sand removal operations. Currently, the solution used for this type of mine sand pump is an external mixer, which is usually located at the inlet of the sand pump. With the development of underground coal mining technology, external mixers are no longer suitable for cleaning silt and sand in underground water tanks or for pumping wastewater containing coal slime, rock powder and other particulate matter in mining roadways. The main reason is that adding an external mixer is structurally redundant and prone to entanglement. Even if an external mixer is used, it will often become clogged, and the sand removal process is not energy-efficient. Summary of the Invention

[0003] To address the shortcomings of the aforementioned technologies, this invention provides a mine sand pump with stirring function, a method thereof, and a stirring and crushing device.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a stirring and pulverizing device, including a lower outer shell, on which a stirring disc and a pulverizing ring are installed. The stirring disc is an irregular cylindrical structure, and the circumferential sidewall of the stirring disc has uneven first pulverizing teeth. The lower end face of the stirring disc is spherical and has stirring teeth. The stirring disc protrudes outward from the lower outer shell. The pulverizing ring surrounds the outer periphery of the stirring disc. The inner wall of the pulverizing ring has uneven second pulverizing teeth. The first and second pulverizing teeth together form an annular inner channel. The annular inner channel is vertically continuous and downwardly connected to the lower port formed between the lower cylinder and the lower outer shell. The opening of the lower port faces downward.

[0005] Furthermore, the mixing disc includes an upper cylinder at the top, a lower cylinder at the bottom, and a curved cylinder in the middle. The diameter of the upper cylinder is smaller than that of the lower cylinder, and the curved cylinder forms a transition between the upper and lower cylinders. The upper cylinder, lower cylinder, and curved cylinder are seamlessly connected.

[0006] Furthermore, the lower end face of the lower cylinder has several stirring teeth, which are distributed in a cross-shaped symmetrical manner near the outer edge of the lower end face.

[0007] A mining sand pump with a stirring function is characterized by comprising a stirring and crushing device.

[0008] Furthermore, the mine sand pump has a cylindrical cavity pump body, which also includes a motor drive device, a secondary crushing device, and a flow channel. The motor drive device, the secondary crushing device, and the stirring crushing device are arranged from top to bottom inside the cavity. The secondary crushing device and the stirring crushing device are coaxially driven by the motor drive device. The flow channel runs vertically through the motor drive device, the secondary crushing device, and the stirring crushing device inside the pump body. The flow channel draws in sewage at the lower port of the pump body, and the sewage passes through the stirring crushing device, the secondary crushing device, and the secondary crushing device in sequence, and is discharged at the upper port of the pump body.

[0009] Furthermore, the motor drive unit is located on the upper part of the pump body, including an upper housing. An upper end cover is fitted on the upper housing, and an upper port is opened on the upper end cover. The opening of the upper port faces upward. A motor housing is installed in the center of the inner part of the housing. An annular hollow channel is formed between the motor housing and the housing. The hollow channel is connected to the upper port through the inner cavity of the upper end cover.

[0010] Furthermore, the motor housing contains a rotor shaft, the upper shaft extension of which is rotatably connected to the motor housing via an upper bearing. A lower motor cover is fitted onto the upper housing. A lower bearing and a first seal are stacked on top of each other at the center of the lower motor cover. The lower shaft extension of the rotor shaft is rotatably connected to the lower motor cover via the lower bearing. The lower shaft extension passes through the first seal from top to bottom and extends downward to the secondary crushing device. The lower motor cover contains a lower end cover cavity, which is connected to the hollow channel.

[0011] Furthermore, the secondary pulverizing device is located in the middle of the pump body and includes a lower outer shell. The lower outer shell is matched and installed on the lower cover of the motor. The upper pulverizing chamber, the lower pulverizing chamber, and the sealing end cover are installed from top to bottom inside the lower outer shell. The upper pulverizing chamber is connected to the inner cavity of the lower end cover. The upper opening of the upper pulverizing chamber matches the lower opening of the inner cavity of the lower end cover. The sealing end cover has a sealing end cover channel. The upper pulverizing chamber, the lower pulverizing chamber, and the sealing end cover channel are connected in sequence. A second sealing element is installed on the sealing end cover. The lower shaft extension of the rotor shaft passes through the upper pulverizing chamber, the lower pulverizing chamber, and the second sealing element from top to bottom. An upper pulverizing wheel is installed on the lower shaft extension of the upper pulverizing chamber, and a lower pulverizing wheel is installed on the lower shaft extension of the lower pulverizing chamber. The lower shaft extension of the rotor shaft passes through the second sealing element from top to bottom and extends downward to the stirring and pulverizing device.

[0012] Furthermore, the flow channel consists of a lower port, an annular inner channel, a sealed end cap channel, a lower crushing chamber, an upper crushing chamber, a lower end cap inner cavity, a hollow channel, an upper end cap inner cavity, and an upper port, which are connected in sequence.

[0013] A method for discharging sewage using a mine sand pump with a stirring function, comprising the following steps:

[0014] The starter motor drive unit, whose rotor shaft coaxially drives the secondary crushing unit and the stirring crushing unit to rotate;

[0015] The mixing and crushing device of the mine sand pump is placed in the sewage. The sewage enters the mine sand pump from the lower port and passes through the annular inner channel formed by the first crushing tooth and the second crushing tooth. The impurities in the sewage are crushed for the first time in the annular inner channel.

[0016] After being crushed through the annular inner channel, the wastewater enters the lower crushing chamber and the upper crushing chamber in sequence through the sealed end cap channel. The lower crushing wheel installed on the lower shaft extension of the lower crushing chamber crushes the wastewater in the chamber a second time, and the upper crushing wheel installed on the lower shaft extension of the upper crushing chamber crushes the wastewater in the chamber a third time.

[0017] After being pulverized three times, the wastewater passes through the inner cavity of the lower end cover, the hollow channel, and the inner cavity of the upper end cover in sequence, and finally flows out from the upper port to achieve sewage discharge.

[0018] This invention discloses a mining sand-discharging pump with stirring function, a method, and a stirring and pulverizing device. The pump coaxially drives a two-stage pulverizing device and a stirring and pulverizing device, resulting in a compact structure, small size, and high transmission efficiency. It eliminates the need for additional stirring costs and solves the problems of entanglement and energy inefficiency in traditional submersible mining sand-discharging pumps with external stirrers. Simultaneously, the pump pulverizes impurities in the wastewater three times. The first stage utilizes rotating first and second pulverizing teeth to rapidly grind impurities into small particles or particles smaller than the diameter of the annular inner channel. These particles then sequentially enter the lower and upper pulverizing chambers for a second and third pulverization, respectively. This results in continuous pulverization of impurities twice using the pulverizing wheels, improving the pulverization effect. Finally, the impurities flow out from the upper port for discharge, solving the problem of frequent clogging in traditional submersible mining sand-discharging pumps with external stirrers. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 for Figure 1 An enlarged view of the central part of the circle.

[0021] Figure 3 This is a bottom view of the lower cylinder of the present invention.

[0022] In the diagram: A01, upper outer casing; A02, upper end cover; A03, hollow channel; A04, lower motor cover; A05, motor housing; A011, upper port; A021, rotor shaft; A022, inner cavity of upper end cover; A041, lower bearing; A042, first seal; A043, inner cavity of lower end cover; A051, upper bearing; B01, lower outer casing; B02, upper crushing chamber; B03, lower crushing chamber. B04, Sealed end cap; B021, Upper crushing wheel; B031, Lower crushing wheel; B041, Sealed end cap channel; B042, Second seal; C01, Stirring disc; C02, Crushing ring; C03, Annular inner channel; C04, Lower port; C011, Upper cylinder; C012, Lower cylinder; C013, Curved cylinder; C0111, First crushing tooth; C0121, Stirring tooth. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 The shown is a mining sand pump with a stirring function. It has a cylindrical cavity pump body. The cavity of the pump body includes four components: a motor drive unit, a secondary crushing unit, a stirring and crushing unit, and a flow channel. The motor drive unit, the secondary crushing unit, and the stirring and crushing unit are arranged from top to bottom inside the cavity. The secondary crushing unit and the stirring and crushing unit are coaxially driven by the motor drive unit. The flow channel runs vertically through the motor drive unit, the secondary crushing unit, and the stirring and crushing unit inside the pump body. The flow channel draws in sewage at the lower port of the pump body. The sewage passes through the stirring and crushing unit, the secondary crushing unit, and the secondary crushing unit in sequence, and is discharged at the upper port of the pump body.

[0025] Specifically, such as Figure 1 and Figure 2The motor drive unit shown is located on the upper part of the pump body. The motor drive unit has a sleeve-shaped upper outer casing A01. An upper end cover A02 is fitted onto the upper outer casing A01, with its upper end abutting against the upper outer casing A01. An upper port A011 is opened at the center of the upper end cover A02, with the opening facing upwards. A motor housing A05 is installed at the center of the outer casing, forming an annular hollow channel A03 between the motor housing and the outer casing. The hollow channel communicates with the upper port A011 through the inner cavity A022 of the upper end cover A02. A rotor shaft A021 is located inside the motor housing A05, and the upper shaft extension of the rotor shaft A021 is rotatably connected via an upper bearing A051. The motor housing A05 is connected to the upper outer shell A01, and the lower cover A04 is installed on the upper outer shell A01. The lower end of the lower cover abuts against the upper outer shell A01. The lower bearing A041 and the first seal A042 are stacked on top of each other in the center of the lower cover A04, which together form a dynamic seal for the motor housing A05. The lower shaft extension of the rotor shaft A021 is rotatably connected to the lower cover A04 through the lower bearing A041. The lower shaft extension passes through the first seal A042 from top to bottom and extends downward to the secondary crushing device. The lower cover A04 has a lower end cover cavity A043 inside, which is connected to the hollow channel A03. The upper opening of the lower end cover cavity matches the cross-sectional shape of the hollow channel A03.

[0026] The secondary crushing device is located in the middle of the pump body and has a sleeve-shaped lower outer shell B01. The lower outer shell B01 is fitted onto the lower cover A04 of the motor, with its upper end abutting against the lower cover A04. Inside the lower outer shell B01, from top to bottom, are installed an upper crushing chamber B02, a lower crushing chamber B03, and a sealing end cover B04. The upper crushing chamber B02 is connected to the inner cavity A043 of the lower end cover, and the upper opening of the upper crushing chamber B02 matches the lower opening of the inner cavity A043 of the lower end cover. The sealing end cover B04 has a sealing end cover channel B041, and the upper crushing chamber B02, the lower crushing chamber B03, and the sealing end cover channel B041 are sequentially connected. A second seal B042 is installed on the sealing end cover B04. The lower shaft extension of the rotor shaft A021 passes through the upper crushing chamber B02, the lower crushing chamber B03 and the second seal B042 from top to bottom, and extends downward to the stirring and crushing device. An upper crushing wheel B021 is installed on the lower shaft extension of the upper crushing chamber B02, and a lower crushing wheel B031 is installed on the lower shaft extension of the lower crushing chamber B03. The lower shaft extension of the rotor shaft A021 passes through the second seal B042 from top to bottom and extends downward to the stirring and crushing device. The second seal B042 provides a stabilizing effect at the lower part of the lower shaft extension, preventing the lower shaft extension of the rotor shaft A021 from rotating or shifting.

[0027] like Figure 2The mixing and pulverizing device shown is located at the bottom of the pump body and includes a mixing disc C01 and a pulverizing ring C02. The mixing disc C01 is an irregular cylindrical structure, divided into three parts: an upper cylinder C011 at the top, a lower cylinder C012 at the bottom, and a curved cylinder C013 in the middle. The lower shaft extension of the rotor shaft A021 is fixed to the center of the upper end face of the upper cylinder C011, so that the mixing disc C01 is driven to rotate by the rotor shaft A021. The diameter of the upper cylinder is smaller than that of the lower cylinder, and the curved cylinder forms a transition between the upper and lower cylinders. The three parts are seamlessly connected. The circumferential sidewall of the upper cylinder C011 has uneven first pulverizing teeth C0111. The lower end face of the lower cylinder C012 is spherical and protrudes out of the pump body. Figure 3 The lower cylinder C012 shown has stirring teeth C0121 on its lower end face. There are several stirring teeth C0121, which are symmetrically distributed in a cross shape near the outer edge of the lower end face. The crushing ring C02 surrounds the upper cylinder C011 and the partially curved cylinder C013. The inner wall of the crushing ring C02 has uneven second crushing teeth C021. The first crushing teeth C0111 and the second crushing teeth C021 together form an annular inner channel C03. The annular inner channel C03 is connected upward to the sealing end cap channel B041, and downward to the lower port C04 formed between the lower cylinder C012 and the lower outer shell B01. The opening of the lower port C04 faces downward.

[0028] Therefore, as Figure 1 The flow channel shown consists of the following components connected in sequence: lower port C04, annular inner channel C03, sealed end cap channel B041, lower crushing chamber B03, upper crushing chamber B02, lower end cap inner cavity A043, hollow channel A03, upper end cap inner cavity A022, and upper port A011.

[0029] Therefore, this invention also discloses a sewage discharge method for a mine sand pump with a stirring function, the steps of which are as follows:

[0030] The starting motor drive device, whose rotor shaft coaxially drives the secondary crushing device and the mixing crushing device to rotate, has the following advantages: First, it makes the mine sand pump compact and small in size; second, it has high transmission efficiency and does not require additional mixing costs.

[0031] The mixing and crushing device of the mining sand pump is placed in the sewage. The sewage enters the mining sand pump from the lower port and passes through the annular inner channel formed by the first and second crushing teeth. The impurities in the sewage are crushed for the first time in the annular inner channel. During the rotation of the annular inner channel, it is not easy to form stagnant water or blockage. The annular inner channel is rotatable. The rotating first and second crushing teeth increase the grinding area. The large diameter of the lower part of the annular inner channel is conducive to the suction of impurities and their accumulation in the upper grinding area with a smaller diameter. This is conducive to quickly grinding the impurities in the sewage into small particles or particles smaller than the diameter of the annular inner channel. Small particles of impurities directly reduce the pressure on subsequent crushing and the wear of components. In addition, the function of the mixing teeth here is: 1. The mixing teeth stir the sewage to make it turbid and disperse the sediment in the sewage. 2. While stirring, the mixing teeth can stir away large pieces of sand and gravel that are close to or left at the lower port. These sand and gravel cannot be crushed, so that the impurities in the sewage that need to be crushed can quickly enter the mining sand pump under the action of suction.

[0032] After being pulverized through the annular inner channel, the wastewater enters the lower pulverizing chamber and the upper pulverizing chamber sequentially through the sealed end cap channel. The lower pulverizing wheel installed on the lower shaft extension of the lower pulverizing chamber pulverizes the wastewater in the chamber a second time, and the upper pulverizing wheel installed on the lower shaft extension of the upper pulverizing chamber pulverizes the wastewater in the chamber a third time. This process utilizes the pulverizing wheels to continuously pulverize the impurities twice, thereby improving the pulverizing effect.

[0033] After being pulverized three times, the wastewater passes through the inner cavity of the lower end cover, the hollow channel, and the inner cavity of the upper end cover in sequence, and finally flows out from the upper port to achieve sewage discharge.

[0034] The above embodiments are not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present invention are also within the protection scope of the present invention.

Claims

1. A mine sand-draining pump with a stirring function, characterized in that: The device includes a mixing and pulverizing apparatus, comprising a lower housing (B01), on which a mixing disc (C01) and a pulverizing ring (C02) are mounted. The mixing disc (C01) has an irregular cylindrical structure, and its circumferential sidewalls have uneven first pulverizing teeth (C0111). The lower end face of the mixing disc (C01) is spherical and has mixing teeth (C0121). The mixing disc (C01) protrudes beyond the lower housing (B01), and the pulverizing ring (C02)... The first crushing tooth (C0111) and the second crushing tooth (C021) are unevenly arranged on the inner wall of the crushing ring (C02) surrounding the stirring plate (C01). The first crushing tooth (C0111) and the second crushing tooth (C021) together form an annular inner channel (C03). The annular inner channel (C03) runs vertically through the ring and connects downward to the lower port (C04) formed between the lower cylinder (C012) and the lower shell (B01). The opening of the lower port (C04) faces downward. The mining sand pump has a cylindrical cavity pump body, which also includes a motor drive unit, a secondary crushing unit, and a flow channel. The motor drive unit, the secondary crushing unit, and the stirring crushing unit are arranged from top to bottom inside the cavity. The secondary crushing unit and the stirring crushing unit are coaxially driven by the motor drive unit. The flow channel runs vertically through the motor drive unit, the secondary crushing unit, and the stirring crushing unit inside the pump body. The flow channel draws in sewage at the lower port of the pump body, and the sewage passes through the stirring crushing unit, the secondary crushing unit, and the secondary crushing unit in sequence, and is discharged at the upper port of the pump body.

2. The mine sand pump with stirring function according to claim 1, characterized in that: The mixing disc (C01) includes an upper cylinder (C011) at the top, a lower cylinder (C012) at the bottom, and a curved cylinder (C013) in the middle. The diameter of the upper cylinder is smaller than that of the lower cylinder. The curved cylinder forms a transition between the upper and lower cylinders. The upper cylinder (C011), the lower cylinder (C012), and the curved cylinder (C013) are seamlessly connected.

3. The mine sand pump with stirring function according to claim 1, characterized in that: The lower end face of the lower cylinder (C012) has a number of stirring teeth (C0121), which are distributed in a cross-shaped symmetrical manner near the outer edge of the lower end face.

4. The mine sand pump with stirring function according to claim 1, characterized in that: The motor drive device is located on the upper part of the pump body and includes an upper outer shell (A01). An upper end cover (A02) is matched and installed on the upper outer shell (A01). An upper port (A011) is opened on the upper end cover (A02). The opening of the upper port (A011) faces upward. A motor housing (A05) is installed at the center of the inner part of the outer shell. An annular hollow channel (A03) is formed between the motor housing and the outer shell. The hollow channel is connected to the upper port (A011) through the inner cavity (A022) of the upper end cover (A02).

5. The mine sand pump with stirring function according to claim 4, characterized in that: The motor housing (A05) contains a rotor shaft (A021). The upper shaft extension of the rotor shaft (A021) is rotatably connected to the motor housing (A05) via an upper bearing (A051). A lower motor cover (A04) is fitted onto the upper outer shell (A01). A lower bearing (A041) and a first seal (A042) are stacked vertically at the center of the lower motor cover (A04). The lower shaft extension of the rotor shaft (A021) is rotatably connected to the lower motor cover (A04) via the lower bearing (A041). The lower shaft extension passes through the first seal (A042) from top to bottom and extends downward to the secondary crushing device. The lower motor cover (A04) contains a lower end cover cavity (A043), which is connected to the hollow channel (A03).

6. The mine sand pump with stirring function according to claim 5, characterized in that: The secondary crushing device is located in the middle of the pump body and includes a lower outer shell (B01). The lower outer shell (B01) is fitted onto the lower cover of the motor (A04). Inside the lower outer shell (B01), from top to bottom, are an upper crushing chamber (B02), a lower crushing chamber (B03), and a sealing end cover (B04). The upper crushing chamber (B02) is connected to the inner cavity of the lower end cover (A043). The upper opening of the upper crushing chamber (B02) matches the lower opening of the inner cavity of the lower end cover (A043). The sealing end cover (B04) has a sealing end cover channel (B041) on its upper part. The upper crushing chamber (B02) and the lower crushing chamber (B03) are connected. The sealing end cover channel (B041) is connected in sequence. A second sealing element (B042) is installed on the sealing end cover (B04). The lower shaft extension of the rotor shaft (A021) passes through the upper crushing chamber (B02), the lower crushing chamber (B03) and the second sealing element (B042) from top to bottom. An upper crushing wheel (B021) is installed on the lower shaft extension of the upper crushing chamber (B02), and a lower crushing wheel (B031) is installed on the lower shaft extension of the lower crushing chamber (B03). The lower shaft extension of the rotor shaft (A021) passes through the second sealing element (B042) from top to bottom and extends downward to the stirring and crushing device.

7. The mine sand pump with stirring function according to claim 5, characterized in that: The flow channel consists of a lower port (C04), an annular inner channel (C03), a sealed end cap channel (B041), a lower crushing chamber (B03), an upper crushing chamber (B02), a lower end cap inner cavity (A043), a hollow channel (A03), an upper end cap inner cavity (A022), and an upper port (A011) connected in sequence.

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