Cable lead-in device for mining explosion-proof submersible desilting electric pump

Abstract

The utility model provides a mining explosion-proof type submersible desilting electric pump cable lead-in device, which belongs to the field of desilting electric pumps and comprises an electric pump body, a connecting pipe is arranged on the electric pump body in a penetrating manner, a first sealing cover is in threaded connection with the connecting pipe, a first sealing assembly is arranged between the connecting pipe and the first sealing cover, and a second sealing assembly is arranged between the connecting pipe and the first sealing cover. A second sealing assembly is arranged on the connecting pipe; the first sealing assembly comprises an annular strip, an annular plate and an annular block. According to the utility model, the first sealing assembly and the second sealing assembly are arranged, and the overall sealing efficiency is enhanced through a multi-level sealing measure, so that the excellent sealing performance is ensured, the possibility of water vapor permeation is effectively reduced, and the normal operation of the electric pump body is further protected from being interfered; and the mounting and dismounting processes are simple, convenient and rapid, subsequent maintenance work is facilitated, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of sand-draining electric pump technology, and in particular to a cable introduction device for a mine explosion-proof submersible sand-draining electric pump. Background Technology

[0002] In the extremely harsh working environment of mines, the continuous operation of explosion-proof submersible drainage pumps faces severe challenges. The cable entry device, as a key component connecting the pump to the outside world, has a crucial impact on the overall service life of the pump due to its performance and reliability.

[0003] The existing technology for introducing devices has shortcomings in sealing performance. Most of them rely solely on sealing rings for sealing, resulting in poor sealing performance. This allows liquid to easily seep into the internal space of the junction box, causing short circuit faults in the circuit. This will seriously hinder the normal operation of the electric pump and thus affect the stability and reliability of the entire system. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cable introduction device for an explosion-proof submersible sand-draining electric pump used in mining.

[0005] An embodiment of this utility model provides a cable entry device for a mine explosion-proof submersible sand-draining pump, comprising:

[0006] An electric pump body, a connecting pipe is provided through the electric pump body, a first sealing cap is threadedly connected to the connecting pipe, a first sealing assembly is provided between the connecting pipe and the first sealing cap, and a second sealing assembly is provided on the connecting pipe;

[0007] The first sealing assembly includes an annular strip, an annular plate, and an annular block. The annular strip is fixedly mounted on the electric pump body, the annular plate is fixedly mounted on the annular strip, the surface of the annular plate is coated with sealing oil, the annular block is fixedly mounted on the outside of the first sealing cover, the bottom of the first sealing cover is provided with an annular groove, the inner side of the annular groove is provided with an annular sliding groove, and a sealing gasket is fixedly mounted on the inner side of the annular groove.

[0008] Furthermore, the second sealing assembly includes a sealing tube, an annular locking block, a rubber sealing sleeve, and a second sealing cap. The sealing tube is fixedly installed through the first sealing cap, and a sealing ring is fixedly installed on the sealing tube. The annular locking block and the rubber sealing sleeve are both fixedly installed inside the sealing tube. The rubber sealing sleeve is movably installed through the sealing tube. The second sealing cap is threadedly connected to the outside of the sealing tube, and several locking plates are fixedly installed on the inside of the second sealing cap.

[0009] Furthermore, the inner side of the annular card block is inclined, and the annular card block is configured to cooperate with the card plate.

[0010] Furthermore, several of the card plates are evenly distributed around the circumference, with the inner side of the card plate being arc-shaped and the outer side of the card plate being inclined.

[0011] Furthermore, a first rotating block is fixedly disposed on the outer side of the first sealing cover, and the first rotating block is arranged in a hexagonal column shape.

[0012] Furthermore, a second rotating block is fixedly provided on the outer side of the second sealing cover, and the second rotating block is arranged in a hexagonal column shape.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. A first sealing assembly is installed. The first sealing cover is screwed onto the connecting pipe, so that the annular plate is inserted into the annular groove, and the annular strip is engaged in the annular groove and pressed against the sealing gasket. The sealing gasket achieves a sealing effect. By setting the annular strip, the contact area with the sealing gasket can be increased, thereby improving the sealing effect. By applying sealing oil to the surface of the annular plate, the gap between the annular plate and the annular groove is filled, further improving the sealing effect and ensuring the sealing between the first sealing cover and the electric pump body, preventing water vapor from seeping in and affecting the operation of the electric pump body.

[0015] 2. A second sealing assembly is provided. The second sealing cover is screwed onto the sealing tube and pressed against the sealing ring. At the same time, the annular block can squeeze the inclined surfaces of several clamping plates, pressing and bending them inward. Through several clamping plates, the rubber sealing sleeve is pressed against the cable for sealing. The sealing ring plays a preliminary sealing role, and the rubber sealing sleeve plays a secondary sealing role, thereby ensuring the sealing performance between the cable and the first sealing cover.

[0016] In summary, this utility model incorporates a first sealing component and a second sealing component, which enhances the overall sealing performance through multi-level sealing measures, thereby ensuring excellent sealing performance, effectively reducing the possibility of water vapor penetration, and further protecting the normal operation of the electric pump body from interference. Moreover, the installation and disassembly process is simple and quick, facilitating subsequent maintenance and repair work, and is highly practical. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a mine explosion-proof submersible sand-draining electric pump cable introduction device as described in the embodiments of this utility model.

[0018] Figure 2 This is a cross-sectional view of the first sealing cover in a mining explosion-proof submersible sand-draining electric pump cable introduction device described in this embodiment of the present utility model.

[0019] Figure 3 This is a mine explosion-proof submersible sand-draining electric pump cable introduction device described in this embodiment of the utility model. Figure 2 Enlarged view of point A in the middle.

[0020] Figure 4 This is a mine explosion-proof submersible sand-draining electric pump cable introduction device described in this embodiment of the utility model. Figure 2 Enlarged view of point B in the middle.

[0021] Figure 5 This is a three-dimensional schematic diagram of the interior of the second sealing cover in a mining explosion-proof submersible sand-draining electric pump cable introduction device described in this embodiment of the present utility model.

[0022] In the above figures: 1. Electric pump body, 2. Connecting pipe, 3. First sealing cover, 4. Annular strip, 5. Annular plate, 6. Annular block, 7. Annular groove, 8. Annular slide groove, 9. Sealing pipe, 10. Annular locking block, 11. Rubber sealing sleeve, 12. Second sealing cover, 13. Locking plate, 14. First rotating block, 15. Second rotating block. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1-5 As shown in the figure, this utility model embodiment proposes a cable introduction device for a mine explosion-proof submersible sand-draining pump, comprising:

[0025] The electric pump body 1 has a connecting pipe 2 running through it. A first sealing cover 3 is threaded onto the connecting pipe 2. A first rotating block 14 is fixedly installed on the outside of the first sealing cover 3. The first rotating block 14 is hexagonal columnar and is designed to allow the user to rotate the first sealing cover 3 with a tool. A first sealing component is installed between the connecting pipe 2 and the first sealing cover 3. A second sealing component is installed on the connecting pipe 2.

[0026] The first sealing assembly includes an annular strip 4, an annular plate 5, and an annular block 6. The annular strip 4 is fixedly mounted on the electric pump body 1, and the annular plate 5 is fixedly mounted on the annular strip 4. The surface of the annular plate 5 is coated with sealing oil, which plays a sealing role. The annular block 6 is fixedly mounted on the outside of the first sealing cover 3. The bottom of the first sealing cover 3 is provided with an annular groove 7, which is configured to cooperate with the annular strip 4 so that the annular strip 4 can be inserted into the annular groove 7. Both sides of the annular groove 7 and the annular strip 4 are inclined, thereby increasing the contact area between the annular strip 4 and the sealing gasket and improving the sealing effect. The inner side of the annular groove 7 is provided with an annular sliding groove 8, and the annular plate 5 slides against the inner side of the annular sliding groove 8 so that the annular plate 5 can be inserted into the annular sliding groove 8 and plays a good sealing role through the sealing oil. The inner side of the annular groove 7 is fixedly mounted with a sealing gasket, and the annular strip 4 is pressed against the sealing gasket.

[0027] The second sealing assembly includes a sealing tube 9, an annular locking block 10, a rubber sealing sleeve 11, and a second sealing cover 12. The sealing tube 9 is fixedly installed through the first sealing cover 3. A sealing ring is fixedly installed on the sealing tube 9 to provide a preliminary seal. The annular locking block 10 and the rubber sealing sleeve 11 are both fixedly installed inside the sealing tube 9. The inner side of the annular locking block 10 is inclined. The annular locking block 10 cooperates with the locking plate 13, allowing the annular locking block 10 to press against the inclined surface of the locking plate 13, thereby bending the locking plate 13 inward. The rubber sealing sleeve 11... Figure 4 The sealing tube 9 is shown to be movable. The second sealing cover 12 is threaded to the outside of the sealing tube 9. The second rotating block 15 is fixedly provided on the outside of the second sealing cover 12. The second rotating block 15 is hexagonal columnar and is convenient for the user to rotate the second sealing cover 12 with tools.

[0028] Several retaining plates 13 are fixedly installed on the inner side of the second sealing cover 12, such as... Figure 5 The plates are evenly distributed around the circumference and have a certain degree of elasticity, which allows the plates to bend and deform when squeezed. The inner side of the plates is arc-shaped, which helps to better fit the rubber sealing sleeve 11. The outer side of the plates is inclined, which allows the annular block 10 to squeeze the inclined surface of the plates and bend the plates inward.

[0029] The detailed working process of this utility model is as follows:

[0030] 1. During installation, first pass the cable through the second sealing cover 12, the rubber sealing sleeve 11 and the first sealing cover 3 in sequence, then connect the cable to the electric pump body 1, and then screw the first sealing cover 3 onto the connecting pipe 2 so that the annular plate 5 is inserted into the annular groove 8 and the annular strip 4 is inserted into the annular groove 7 and pressed against the sealing gasket.

[0031] 2. Then, screw the second sealing cap 12 onto the sealing tube 9 and press it against the sealing ring. At the same time, the annular block 10 can press the inclined surfaces of several clamping plates 13, pressing and bending them inward. The rubber sealing sleeve 11 is pressed and sealed against the cable by several clamping plates 13.

[0032] 3. During disassembly, unscrew the second sealing cover 12 and the first sealing cover 3 in sequence to remove the cable for replacement or maintenance.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cable introduction device for a mine explosion-proof submersible sand-draining electric pump, characterized in that, include: The electric pump body (1) has a connecting pipe (2) that runs through it. A first sealing cap (3) is threaded onto the connecting pipe (2). A first sealing assembly is provided between the connecting pipe (2) and the first sealing cap (3). A second sealing assembly is provided on the connecting pipe (2). The first sealing assembly includes an annular strip (4), an annular plate (5), and an annular block (6). The annular strip (4) is fixedly mounted on the electric pump body (1). The annular plate (5) is fixedly mounted on the annular strip (4). The surface of the annular plate (5) is coated with sealing oil. The annular block (6) is fixedly mounted on the outside of the first sealing cover (3). The bottom of the first sealing cover (3) is provided with an annular groove (7). The inner side of the annular groove (7) is provided with an annular sliding groove (8). A sealing gasket is fixedly mounted on the inner side of the annular groove (7).

2. The cable introduction device for a mine explosion-proof submersible sand-draining electric pump according to claim 1, characterized in that, in: The second sealing assembly includes a sealing tube (9), an annular locking block (10), a rubber sealing sleeve (11), and a second sealing cover (12). The sealing tube (9) is fixedly installed through the first sealing cover (3). A sealing ring is fixedly installed on the sealing tube (9). The annular locking block (10) and the rubber sealing sleeve (11) are both fixedly installed inside the sealing tube (9). The rubber sealing sleeve (11) is movably installed through the sealing tube (9). The second sealing cover (12) is threaded to the outside of the sealing tube (9). Several locking plates (13) are fixedly installed on the inside of the second sealing cover (12).

3. The cable introduction device for a mine explosion-proof submersible sand-draining electric pump according to claim 2, characterized in that, in: The inner side of the annular card block (10) is inclined, and the annular card block (10) is configured to cooperate with the card plate (13).

4. The cable introduction device for a mine explosion-proof submersible sand-draining electric pump according to claim 2, characterized in that, in: Several of the card plates (13) are evenly distributed around the circumference, the inner side of the card plate (13) is arc-shaped, and the outer side of the card plate (13) is inclined.

5. The cable introduction device for a mine explosion-proof submersible sand-draining electric pump according to claim 1, characterized in that, in: A first rotating block (14) is fixedly provided on the outside of the first sealing cover (3), and the first rotating block (14) is arranged in a hexagonal column shape.

6. The cable introduction device for a mine explosion-proof submersible sand-draining electric pump according to claim 2, characterized in that, in: A second rotating block (15) is fixedly provided on the outside of the second sealing cover (12), and the second rotating block (15) is arranged in a hexagonal column shape.

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