A high temperature resistant sealing device for explosion-proof submersible sand removal electric pump for mines

Abstract

The utility model relates to the technical field of sand-discharging electric pumps, and in particular to a high-temperature resistant sealing device for a mine explosion-proof submersible sand-discharging electric pump, comprising a housing and a motor, the motor being provided with a transmission shaft, a partition being fixedly installed inside the housing, a rotating block being fixedly sleeved on the transmission shaft, a sealing ring being fixedly installed on the rotating block, a mounting block being symmetrically fixedly installed on the transmission shaft, a first strut being rotatably installed on the mounting block, a second strut being rotatably installed on one end of the first strut through a connecting block, a pressure ring being rotatably installed on one end of two of the second struts, and a transmission assembly being provided on the connecting block. The utility model ensures that the sealing ring can always be in close contact with the rotating block through the mutual cooperation of the mounting plate, the first strut, the connecting block, the second strut, the pressure ring and the transmission assembly, effectively preventing the sealing ring from being loosened during installation, and preventing water from seeping into the motor through the gap, thereby protecting the electric pump.

Description

Technical Field

[0001] The utility model relates to the technical field of sand-discharging electric pumps, in particular to a high-temperature resistant sealing device for a mine-used flameproof submersible sand-discharging electric pump. Background Art

[0002] The mining explosion-proof submersible sand pump is an advanced and reliable drainage tool. It is mainly used in underground tunnels of coal mines, water pits at the bottom of the well, local water pits, drainage of coal preparation plants, engineering drainage, etc. It is used to discharge groundwater and sewage containing a small amount of suspended coal powder, rock chips, coal particles, sand, gravel, mud and other solid particles.

[0003] An important component of the sand-removing electric pump is the impeller, which is connected to the internal motor through transmission, so the sealing performance at the gap is very important. However, the existing sand-removing water pumps simply install sealing rings at the gaps, and the sealing performance is poor. After repeated use, the sealing rings at the gaps may become loose, which may cause water to penetrate into the motor along the gaps, causing damage to the electric pump. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: the existing sand-discharging water pump is simply equipped with a sealing ring at the gap, which has poor sealing performance. After repeated use, the sealing ring at the gap may become loose. A high-temperature resistant sealing device for a mine explosion-proof submersible sand-discharging electric pump is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high temperature resistant sealing device for a mine flameproof submersible sand removal electric pump comprises a housing, a motor is mounted on the upper end of the housing, and a transmission shaft is arranged on the motor;

[0007] A partition is fixedly installed inside the shell, a closed space is formed between the partition and the shell, a rotating hole is opened on the partition, a rotating block is fixedly sleeved on the transmission shaft, and the rotating block is rotatably installed in the rotating hole;

[0008] A sealing ring is fixedly installed on the rotating block, and a mounting block is symmetrically fixedly installed on the transmission shaft. A first strut is rotatably installed on the two mounting blocks, and a connecting block is rotatably installed on the ends of the two first struts away from the mounting blocks. A second strut is rotatably installed on the two connecting blocks, and a pressure ring is rotatably installed on the ends of the two second struts away from the connecting blocks, and the pressure ring is in contact with the sealing ring. The connecting block is provided with a transmission component for driving the two connecting blocks away from each other.

[0009] Preferably, the transmission assembly includes two brackets respectively fixedly mounted horizontally on two connecting blocks and two centrifugal balls respectively fixedly mounted on the two brackets.

[0010] Preferably, an annular groove is formed on the inner wall of the rotating hole, and a plurality of friction blocks are fixedly mounted on the side wall of the rotating block, and the plurality of friction blocks are slidably mounted in the annular groove.

[0011] Preferably, the friction block is made of high temperature resistant material, and the friction block is in sliding contact with the inner wall of the annular groove.

[0012] Preferably, a plurality of arc-shaped plates are fixedly mounted on the lower end of the rotating block, and the plurality of arc-shaped plates are all located directly below the partition.

[0013] Preferably, the arcuate convex surfaces of the plurality of arcuate plates all face the rotation direction of the transmission shaft.

[0014] In the utility model, the beneficial effects are:

[0015] During the rotation of the transmission shaft, the mounting plate, the first support rod, the connecting block, the second support rod, the pressure ring and the transmission assembly cooperate with each other to exert vertical downward pressure on the sealing ring, thereby ensuring that the sealing ring can always be in close contact with the rotating block, effectively preventing the sealing ring from being loosened during installation, and preventing water from penetrating into the motor through the gap, thereby protecting the electric pump;

[0016] When a small amount of water enters the gap between the partition and the rotating block, the water will be evenly distributed in the annular groove under the action of multiple friction blocks. At the same time, multiple friction blocks will generate a certain amount of heat during the rotation process, thereby evaporating the water and further preventing water from seeping into the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a high-temperature resistant sealing device for a mine flameproof submersible sand removal electric pump proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of a partial cross-sectional structure of a high-temperature resistant sealing device of a flameproof submersible sand removal electric pump for mining proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of a partial cross-sectional structure of a flameproof submersible sand removal electric pump high temperature resistant sealing device for mining proposed by the utility model;

[0020] Figure 4 It is a three-dimensional explosion structure schematic diagram of a motor, a transmission shaft, a transmission assembly, a pressure ring, a rotating block and a sealing ring in a high temperature resistant sealing device of a flameproof submersible sand removal electric pump for mining proposed by the utility model;

[0021] Figure 5 for Figure 2 A magnified view of the structure at center;

[0022] Figure 6 for Figure 4 Enlarged view of the structure at point B in the middle.

[0023] In the figure: 1 housing, 2 motor, 3 transmission shaft, 4 partition, 5 rotating block, 6 sealing ring, 7 mounting block, 8 first support rod, 9 connecting block, 10 second support rod, 11 pressure ring, 12 bracket, 13 centrifugal ball, 14 friction block, 15 arc plate, 16 annular groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-Figure 6 A high temperature resistant sealing device for a flameproof submersible sand removal electric pump for mining, comprising a housing 1, a motor 2 is mounted on the upper end of the housing 1, and a transmission shaft 3 is arranged on the motor 2;

[0026] A partition plate 4 is fixedly installed inside the housing 1, and a closed space is formed between the partition plate 4 and the housing 1. A rotating hole is opened on the partition plate 4, and a rotating block 5 is fixedly sleeved on the transmission shaft 3, and the rotating block 5 is rotatably installed in the rotating hole;

[0027] A sealing ring 6 is fixedly mounted on the rotating block 5, a mounting block 7 is symmetrically fixedly mounted on the transmission shaft 3, a first strut 8 is rotatably mounted on the two mounting blocks 7, a connecting block 9 is rotatably mounted on the ends of the two first struts 8 away from the mounting block 7, a second strut 10 is rotatably mounted on the two connecting blocks 9, a pressure ring 11 is rotatably mounted on the ends of the two second struts 10 away from the connecting block 9, the pressure ring 11 is in contact with the sealing ring 6, a transmission assembly for driving the two connecting blocks 9 away from each other is provided on the connecting block 9, and the transmission assembly includes two brackets 12 respectively fixedly mounted horizontally on the two connecting blocks 9 and two centrifugal balls 13 respectively fixedly mounted on the two brackets 12;

[0028] When the electric pump is in use, the motor 2 drives the transmission shaft 3 to rotate. During the rotation of the transmission shaft 3, the two brackets 12 and the two centrifugal balls 13 are driven to rotate around the transmission shaft 3. The two centrifugal balls 13 generate centrifugal force during rotation. Under the action of the centrifugal force, the two connecting blocks 9 are driven away from each other through the two brackets 12 respectively, and then the first support rod 8 and the second support rod 10 apply vertical downward pressure to the pressure ring 11, so that the pressure ring 11 applies vertical downward pressure to the sealing ring 6. Under the action of pressure, the sealing ring 6 will fit tightly on the rotating block 5, thereby tightly blocking the gap between the rotating block 5 and the partition 4, effectively preventing the sealing ring 6 from being loosened during installation, and preventing water from seeping into the motor 2 through the gap, thereby protecting the electric pump.

[0029] An annular groove 16 is provided on the inner wall of the rotating hole, and a plurality of friction blocks 14 are fixedly mounted on the side wall of the rotating block 5. The plurality of friction blocks 14 are slidably mounted in the annular groove 16. The friction blocks 14 are made of high temperature resistant material, and the friction blocks 14 are in sliding contact with the inner wall of the annular groove 16.

[0030] When a small amount of water enters the gap between the partition 4 and the rotating block 5, the water will be evenly distributed in the annular groove 16 due to the rotation of multiple friction blocks 14. At the same time, when the friction block 14 rotates in the annular groove 16, a certain amount of heat will be generated, thereby evaporating the water, further preventing water from penetrating into the motor.

[0031] A plurality of arc-shaped plates 15 are fixedly mounted on the lower end of the rotating block 5. The plurality of arc-shaped plates 15 are all located directly below the partition plate 4. The arc-shaped convex surfaces of the plurality of arc-shaped plates 15 are all facing the rotation direction of the transmission shaft 3.

[0032] During the rotation of the transmission shaft 3, the multiple arc plates 15 will be driven to rotate around the transmission shaft 3. During the rotation of the arc plates 15, the water under the rotating block 5 will be driven to rotate. Under the design of the arc structure of the arc plates 15, the water at the arc plates 15 will move toward the surrounding directions of the body shell 1, thereby forming a vortex under the rotating block 5, so as to separate the water from the rotating block 5 as much as possible.

[0033] In the utility model, during the rotation of the transmission shaft 3, the two connecting blocks 9 are driven away from each other through the transmission assembly, and then a vertical downward pressure is applied to the pressure ring 11 through the first support rod 8 and the second support rod 10, so that the pressure ring 11 will apply a vertical downward pressure to the sealing ring 6. Under the action of pressure, the sealing ring 6 will fit tightly on the rotating block 5, thereby tightly blocking the gap between the rotating block 5 and the partition 4, effectively preventing the sealing ring 6 from being loosened during installation, avoiding water from penetrating into the motor 2 through the gap, and protecting the electric pump.

[0034] In general, with respect to the technical problem: the existing sand-discharging water pump simply installs the sealing ring 6 at the gap, and the sealing performance is poor. After repeated use, the sealing ring 6 at the gap may become loose; a technical solution is adopted: through the cooperation of the mounting plate 7, the first support rod 8, the connecting block 9, the second support rod 10, the pressure ring 11 and the transmission assembly, a vertical downward pressure can be applied to the sealing ring 6; because the implementation process of the technical solution is: during the rotation of the transmission shaft 3, the two connecting blocks 9 are driven away from each other through the transmission assembly, and then the first support rod 8 and the second support rod 10 apply a vertical downward pressure to the pressure ring 11, so that the pressure ring 11 will apply a vertical downward pressure to the sealing ring 6, and under the action of pressure, the sealing ring 6 will fit tightly on the rotating block 5, thereby tightly blocking the gap between the rotating block 5 and the partition 4, and effectively preventing the sealing ring 6 from being loosened during installation; so the technical problem can be solved inevitably, and the technical effect achieved is: preventing water from penetrating into the motor 2 through the gap, thereby protecting the electric pump.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high temperature resistant sealing device for a flameproof submersible sand removal electric pump for use in a mine, comprising a housing (1), characterized in that: A motor (2) is mounted on the upper end of the housing (1), and a transmission shaft (3) is provided on the motor (2); A partition plate (4) is fixedly mounted inside the shell (1), a closed space is formed between the partition plate (4) and the shell (1), a rotation hole is opened on the partition plate (4), a rotation block (5) is fixedly sleeved on the transmission shaft (3), and the rotation block (5) is rotatably mounted in the rotation hole; A sealing ring (6) is fixedly mounted on the rotating block (5), a mounting block (7) is symmetrically fixedly mounted on the transmission shaft (3), a first support rod (8) is rotatably mounted on the two mounting blocks (7), a connecting block (9) is rotatably mounted on the ends of the two first support rods (8) away from the mounting blocks (7), a second support rod (10) is rotatably mounted on the two connecting blocks (9), a pressure ring (11) is rotatably mounted on the ends of the two second support rods (10) away from the connecting blocks (9), the pressure ring (11) is in contact with the sealing ring (6), and a transmission component for driving the two connecting blocks (9) to move away from each other is provided on the connecting block (9).

2. A high temperature resistant sealing device for a flameproof submersible sand removal electric pump for mining according to claim 1, characterized in that: The transmission assembly comprises two brackets (12) respectively fixedly mounted horizontally on two connecting blocks (9) and two centrifugal balls (13) respectively fixedly mounted on the two brackets (12).

3. A high temperature resistant sealing device for a flameproof submersible sand removal electric pump for mining according to claim 1, characterized in that: An annular groove (16) is provided on the inner wall of the rotating hole, and a plurality of friction blocks (14) are fixedly mounted on the side wall of the rotating block (5), and the plurality of friction blocks (14) are all slidably mounted in the annular groove (16).

4. A high temperature resistant sealing device for a flameproof submersible sand removal electric pump for mining use according to claim 3, characterized in that: The friction block (14) is made of a high temperature resistant material, and the friction block (14) is in sliding contact with the inner wall of the annular groove (16).

5. A high temperature resistant sealing device for a flameproof submersible sand removal electric pump for mining according to claim 1, characterized in that: A plurality of arc-shaped plates (15) are fixedly mounted on the lower end of the rotating block (5), and the plurality of arc-shaped plates (15) are all located directly below the partition plate (4).

6. A high temperature resistant sealing device for a flameproof submersible sand removal electric pump for mining use according to claim 5, characterized in that: The arc-shaped convex surfaces of the plurality of arc-shaped plates (15) all face the rotation direction of the transmission shaft (3).

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