A mine waterproof rotary connector

Abstract

The present application relates to the technical fields of mining electrical connection equipment, in particular to a mining waterproof rotary connector, comprising a male connector, a sealing rotary filtering mechanism, a positioning mechanism and a female connector, the male connector and the female connector are rotationally connected through the sealing rotary filtering mechanism and the positioning mechanism, and the sealing rotary filtering mechanism is located in the interior of the male connector.In the present application, the shaft seat sealing washer, the connecting sealing washer and the waterproof layer (and the dustproof and waterproof washer) form a four-stage sealing barrier, which completely blocks the water from entering the interior of the connector from the bearing part in the interior of the connector, the joint gap and the external rotary end surface, and even in the long-term water dripping and seepage environment in the mine, the water can be completely blocked from entering the interior of the connector, and the hidden troubles of short circuit and electric leakage are eliminated.The bearing frame and the rotating ball enable the male and female connectors to rotate without jamming, the rotating friction is reduced, the shaft seat sealing washer prevents the dust and water from entering the ball channel, the ball wear and rust are avoided, and the durability of the rotary structure is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of electrical connection equipment for mining, and in particular to a waterproof rotary connector for mining. Background Technology

[0002] In the installation, wiring, and maintenance of electrical equipment in underground mines, connectors need to adapt to pipeline layout requirements at different angles. Rotary connectors, with their flexible turning advantage, have become a commonly used component for underground electrical connections. Currently, although existing technologies for mining rotary connectors have basic rotation functions, they still have many shortcomings in actual underground applications, making it difficult to meet stringent requirements for explosion-proof, waterproof, and earthquake-resistant performance.

[0003] Existing technical solutions have a simple sealing structure, using only a single-layer sealing ring. Long-term water spray and seepage in the well can easily break through the sealing layer, causing water to enter the joint and leading to safety hazards such as short circuits and electrical leakage.

[0004] To address the above problems, the present invention provides a waterproof rotary connector for mining applications. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of poor sealing performance and easy jamming and damage of the rotating structure in the existing mining rotary connector, and to propose a waterproof rotary connector for mining.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a waterproof rotary connector for mining, comprising a male connector, a sealing rotary filter mechanism, a positioning mechanism, and a female connector, wherein the male connector and the female connector are rotatably connected through the sealing rotary filter mechanism and the positioning mechanism, and the sealing rotary filter mechanism is located inside the male connector.

[0007] The sealed rotary filter mechanism includes a sealed rotary assembly and a filter assembly. The sealed rotary assembly includes a shaft seat sealing gasket, a connecting steel ring, and a connecting sealing gasket. The positioning mechanism includes a spring washer and a shock-absorbing washer.

[0008] The outer surface of the connecting steel ring has sealing grooves on both sides. The connecting sealing gaskets are symmetrically snapped into the inside of the sealing grooves. The sealing rotation assembly also includes retaining strips that fix the inside of the male and female connectors. The male and female connectors are symmetrically sealed and snapped into both sides of the connecting steel ring by the retaining strips. The connecting sealing gaskets are symmetrically snapped into the gaps where the male and female connectors connect with the sealing grooves.

[0009] Furthermore, the sealing rotation assembly also includes a bearing bracket fixedly connected to the inner wall of the male connector and the female connector. The inner wall of the bearing bracket has a ball groove at equal intervals. Rotating balls are engaged inside the bearing bracket and the ball groove. The rotating balls are evenly spaced at the rotational connection of the male connector and the female connector.

[0010] Furthermore, the outer surfaces of both ends of the bearing bracket inside the male and female connectors are provided with bearing seat grooves, and the bearing seat sealing gaskets are symmetrically engaged inside the bearing seat grooves.

[0011] Furthermore, a waterproof layer is snapped into the gap between the bearing bracket inside the male and female connectors and the connecting steel ring, and a dustproof and waterproof gasket is snapped into the gap between the top of the male connector and the outer surface of the female connector.

[0012] Furthermore, the filter assembly includes a positioning plate fixedly connected to the inner wall of the male connector, a filter screen plate is threadedly connected to the top of the positioning plate, and connectors are threadedly connected to the top of the filter screen plate at equal intervals. The filter screen plate is threadedly connected to the top of the positioning plate through the connectors.

[0013] Furthermore, the positioning mechanism also includes connecting threaded slots that are equally spaced along the circumferential direction of the outer surfaces of the male and female connectors, and the two ends of the spring washer are engaged inside the connecting threaded slots.

[0014] Furthermore, the spring washer is engaged inside the connecting threaded slot near the female connector, and a positioning bolt is engaged inside the spring washer and the shock-absorbing washer. The male connector and the female connector are threadedly connected to each other by the positioning bolt, and the positioning bolt is threaded inside the connecting threaded slot.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In this invention, a four-level sealing barrier is formed by the bearing seat sealing gasket, the connecting sealing gasket, the waterproof layer (and the dustproof and waterproof gasket), which seals the joint from the bearing part inside the joint and the mating gap to the external rotating end face. With the waterproof layer, even in the long-term water spray and seepage environment downhole, it can completely prevent water from entering the joint, eliminating the risk of short circuit and leakage. The bearing bracket and rotating balls enable the male and female joints to rotate without jamming, reducing rotational friction. The bearing seat sealing gasket isolates dust and water from entering the ball channel, preventing the balls from wearing and rusting, greatly improving the durability of the rotating structure. The connecting steel ring and the retaining strip achieve precise docking and positioning, preventing the joint from radially shifting during rotation, ensuring rotational stability, and adapting to the needs of multi-angle pipeline layout downhole.

[0016] 2. In this invention, the elastic tension of the spring washer and the buffering performance of the shock-absorbing washer, combined with the circumferentially distributed positioning bolts, are used to construct an anti-vibration positioning system, which effectively counteracts the high-frequency vibration generated by the operation of downhole equipment, prevents the male and female joints from loosening or separating, reduces the sealing gap, and improves the overall connection strength of the joint through the dual fixing method of threaded connection and elastic snap-fit. Even under high-intensity vibration conditions, the sealing structure can be kept intact and the connection can be made tight. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of a waterproof rotary connector for mining is provided for this invention. Figure 2 This invention provides a schematic diagram of the structure of a spring washer in a waterproof rotary connector for mining applications; Figure 3 This invention proposes a waterproof rotary connector for mining applications. Figure 2 Enlarged view of point A; Figure 4 This invention provides a structural schematic diagram of a sealing washer for a shaft seat in a mine-use waterproof rotary connector. Figure 5 This invention provides a schematic diagram of the connecting steel ring in a mine-use waterproof rotary connector; Figure 6 This invention proposes a waterproof rotary connector for mining applications. Figure 5 Enlarged diagram of point B.

[0018] Legend: 1. Male connector; 2. Sealed rotary filter mechanism; 21. Sealed rotary assembly; 211. Shaft seat sealing gasket; 212. Connecting steel ring; 213. Connecting sealing gasket; 214. Sealing groove; 215. Clamping strip; 216. Bearing bracket; 217. Ball groove; 218. Rotating ball; 219. Shaft seat groove; 2191. Waterproof layer; 2192. Dustproof and waterproof gasket; 22. Filter assembly; 221. Positioning plate; 222. Filter screen; 223. Connecting piece; 3. Positioning mechanism; 31. Spring washer; 32. Shock-absorbing washer; 33. Connecting threaded groove; 34. Positioning bolt; 4. Female connector. Detailed Implementation

[0019] Please see Figure 1-6 The present invention provides a technical solution: a waterproof rotary connector for mining, including a male connector 1, a sealing rotary filter mechanism 2, a positioning mechanism 3 and a female connector 4. The male connector 1 and the female connector 4 are rotatably connected through the sealing rotary filter mechanism 2 and the positioning mechanism 3. The sealing rotary filter mechanism 2 is located inside the male connector 1.

[0020] The following section will describe in detail the specific configuration and function of its sealing rotary filter mechanism 2, positioning mechanism 3, and female connector 4.

[0021] In this embodiment: the sealed rotary filter mechanism 2 includes a sealed rotary assembly 21 and a filter assembly 22. The sealed rotary assembly 21 includes a shaft seat sealing washer 211, a connecting steel ring 212 and a connecting sealing washer 213. The positioning mechanism 3 includes a spring washer 31 and a shock-absorbing washer 32.

[0022] Sealing grooves 214 are provided on both sides of the outer surface of the connecting steel ring 212. The connecting sealing gaskets 213 are symmetrically snapped into the inside of the sealing grooves 214. The sealing rotation assembly 21 also includes a retaining strip 215 that fixes the inside of the male connector 1 and the female connector 4. The male connector 1 and the female connector 4 are symmetrically sealed and snapped into both sides of the connecting steel ring 212 by the retaining strip 215. The connecting sealing gaskets 213 are symmetrically snapped into the gaps where the male connector 1, the female connector 4 and the sealing grooves 214 are connected.

[0023] The effects achieved by the above components are as follows: the locking strip 215 enables precise alignment and locking between the male and female connectors 4 and the connecting steel ring 212, avoiding radial movement and misalignment during docking, ensuring rotational coaxiality, and using the sealing groove 214 to limit the connection of the sealing gasket 213, so that it tightly fills the joint docking gap, forming the first outer peripheral sealing barrier, preventing dust and water from seeping into the joint from the docking gap, while improving the sealing performance and structural stability of the joint docking.

[0024] Specifically, the sealing rotation assembly 21 also includes a bearing bracket 216 fixedly connected to the inner wall of the male connector 1 and the female connector 4. The inner wall of the bearing bracket 216 has a ball groove 217 at equal intervals. Rotating balls 218 are engaged inside the bearing bracket 216 and the ball groove 217. The rotating balls 218 are evenly arranged at the rotation connection of the male connector 1 and the female connector 4.

[0025] The effects achieved by the above components are as follows: the bearing bracket 216 provides a stable support carrier for the rotating ball 218, the ball groove 217 precisely limits the position of the ball to prevent the ball from falling off or shifting, and the rolling friction of the ball replaces the traditional sliding friction, which greatly reduces the rotational resistance of the male and female joints 4, realizes flexible rotation without jamming, meets the needs of multi-angle pipeline wiring in the well, and at the same time ensures the stability of the joint structure during rotation, without shaking or loosening.

[0026] The outer surfaces of both ends of the bearing bracket 216 inside the male connector 1 and the female connector 4 are provided with bearing seat grooves 219, and the bearing seat sealing gaskets 211 are symmetrically engaged inside the bearing seat grooves 219.

[0027] The effects achieved by the above components are as follows: the bearing seat groove 219 realizes the positioning and installation of the bearing seat sealing gasket 211, preventing the sealing gasket from shifting or falling off during use; the bearing seat sealing gasket 211 provides internal sealing to both ends of the bearing bracket 216, preventing dust and water from entering the ball groove 217, avoiding ball wear and seizing, ensuring long-term smooth operation of the rotating structure, and extending the overall service life of the bearing and joint.

[0028] Specifically, a waterproof layer 2191 is snapped into the gap between the bearing bracket 216 inside the male connector 1 and the connecting steel ring 212, and a dustproof and waterproof gasket 2192 is snapped into the gap between the top of the male connector 1 and the outer surface of the female connector 4.

[0029] The effects achieved by the above components are as follows: the waterproof layer 2191 expands when exposed to water to fill the fine gaps inside, further enhancing the internal sealing effect and preventing water penetration; the dustproof and waterproof gasket 2192 covers the external rotating gap of the joint, forming the first external waterproof and dustproof defense line; the internal and external double sealing works together to construct a fully enclosed sealing system, completely isolating underground water, dust, oil and gas from entering the joint, meeting the high-level waterproof requirements for mining.

[0030] Specifically, the filter assembly 22 includes a positioning plate 221 fixedly connected to the inner wall of the male connector 1. A filter screen 222 is threadedly connected to the top of the positioning plate 221. Connectors 223 are threadedly connected to the top of the filter screen 222 at equal intervals. The filter screen 222 is threadedly connected to the top of the positioning plate 221 through the connectors 223.

[0031] The effects achieved by the above components are as follows: the positioning plate 221 provides a stable installation base for the filter screen plate 222, and the threaded connection with the connector 223 enables the filter screen plate 222 to be detachably fixed, which facilitates the cleaning of impurities and replacement of the filter screen in the later stage. The filter screen plate 222 effectively intercepts dust, debris and other impurities in the pipeline, preventing impurities from entering the connector and wearing the conductive core and blocking the transmission channel, ensuring the stability of electrical signal and medium transmission, and protecting the internal seals from scratches by impurities.

[0032] Specifically, the positioning mechanism 3 also includes connecting threaded slots 33 that are equally spaced along the circumferential direction of the outer surfaces of the male connector 1 and the female connector 4, and the two ends of the spring washer 31 are engaged inside the connecting threaded slots 33.

[0033] The effects achieved by the above components are as follows: the circumferentially distributed connecting threaded grooves 33 ensure that the joint is subjected to balanced force, provide standard installation points for the positioning connector 223, and the spring washer 31 uses its own elastic tension to initially lock the joint mating part, fill the joint connection gap, alleviate the loosening tendency caused by downhole vibration, and increase the pre-tightening force of the joint mating.

[0034] Specifically, the spring washer 31 is snapped into the inside of the connecting threaded slot 33 near the female connector 4. The spring washer 31 and the shock-absorbing washer 32 are snapped into the inside of the positioning bolt 34. The male connector 1 and the female connector 4 are threadedly connected to each other through the positioning bolt 34, which is threaded into the inside of the connecting threaded slot 33.

[0035] The effects achieved by the above components are as follows: the positioning bolt 34 enables the detachable rigid fixation of the male and female connectors 4, ensuring the connection strength of the connectors; the spring washer 31, together with the shock-absorbing washer 32, forms a buffer and shock-absorbing structure to offset the high-frequency vibration generated by the operation of the downhole equipment, prevent the positioning bolt 34 from loosening and the connector from separating, always maintain a tight fit of the sealing gap, and avoid vibration leading to sealing failure and loosening of the connection.

[0036] Working principle: When using this waterproof rotary connector for mining, first align the male connector 1 and the female connector 4 with the connecting steel ring 212 through the clamping strip 215 to complete the clamping and positioning, and then connect the sealing gasket 213 to fill the mating gap to form a basic seal.

[0037] When rotating the joint, the rotating ball 218 rolls in the ball groove 217, enabling the male and female joints to rotate 4° flexibly. The shaft seat sealing gasket 211, the waterproof layer 2191, and the dustproof and waterproof gasket 2192 form a four-level seal, which completely blocks water and dust from entering the joint. When the medium or current in the pipeline passes through, the filter screen 222 intercepts impurities and protects the internal core and seals. The entire device, with the synergistic effect of rotation, sealing, filtration, and shock resistance, is suitable for the harsh working conditions in underground mines, ensuring safe and stable electrical connections and long-term reliable operation.

[0038] Then, the positioning bolt 34 is passed through the spring washer 31 and the shock-absorbing washer 32 and screwed into the connecting threaded hole groove 33 to complete the fastening of the male and female connector 4. The spring washer 31 and the shock-absorbing washer 32 cooperate to offset the downhole vibration and prevent the connector from loosening.

Claims

1. A waterproof rotary connector for mining, comprising a male connector (1), a sealing rotary filter mechanism (2), a positioning mechanism (3), and a female connector (4), characterized in that: The male connector (1) and the female connector (4) are rotatably connected by a sealing rotary filter mechanism (2) and a positioning mechanism (3), wherein the sealing rotary filter mechanism (2) is located inside the male connector (1); The sealed rotary filter mechanism (2) includes a sealed rotary assembly (21) and a filter assembly (22). The sealed rotary assembly (21) includes a shaft seat sealing gasket (211), a connecting steel ring (212) and a connecting sealing gasket (213). The positioning mechanism (3) includes a spring washer (31) and a shock-absorbing washer (32). The outer surface of the connecting steel ring (212) is provided with sealing grooves (214) on both sides. The connecting sealing gaskets (213) are symmetrically snapped into the inside of the sealing grooves (214). The sealing rotation assembly (21) also includes a retaining strip (215) for fixing the inside of the male connector (1) and the female connector (4). The male connector (1) and the female connector (4) are symmetrically sealed and snapped into both sides of the connecting steel ring (212) by the retaining strip (215). The connecting sealing gaskets (213) are symmetrically snapped into the gap between the male connector (1), the female connector (4) and the sealing grooves (214).

2. The waterproof rotary connector for mining as described in claim 1, characterized in that: The sealing rotation assembly (21) also includes a bearing bracket (216) fixedly connected to the inner wall of the male connector (1) and the female connector (4). The inner wall of the bearing bracket (216) has a ball groove (217) at equal intervals. Rotating balls (218) are engaged inside the bearing bracket (216) and the ball groove (217). The rotating balls (218) are evenly arranged at the rotation connection of the male connector (1) and the female connector (4).

3. A waterproof rotary connector for mining as described in claim 2, characterized in that: The outer surfaces of the bearing brackets (216) inside the male connector (1) and female connector (4) are provided with bearing seat grooves (219), and the bearing seat sealing gaskets (211) are symmetrically engaged inside the bearing seat grooves (219).

4. A waterproof rotary connector for mining as described in claim 3, characterized in that: A waterproof layer (2191) is snapped into the gap between the bearing bracket (216) inside the male connector (1) and the connecting steel ring (212). A dustproof and waterproof gasket (2192) is snapped into the gap between the top of the male connector (1) and the outer surface of the female connector (4).

5. A waterproof rotary connector for mining as described in claim 1, characterized in that: The filter assembly (22) includes a positioning plate (221) fixedly connected to the inner wall of the male connector (1). The top of the positioning plate (221) is threaded with a filter screen plate (222). The top of the filter screen plate (222) is threaded with connectors (223) at equal intervals. The filter screen plate (222) is threaded to the top of the positioning plate (221) through the connectors (223).

6. A waterproof rotary connector for mining as described in claim 1, characterized in that: The positioning mechanism (3) further includes connecting threaded slots (33) that are equally spaced along the circumferential direction of the outer surfaces of the male connector (1) and the female connector (4), and the two ends of the spring washer (31) are engaged inside the connecting threaded slots (33).

7. A waterproof rotary connector for mining as described in claim 6, characterized in that: The spring washer (31) is snapped into the inside of the connecting threaded slot (33) near the female connector (4). The spring washer (31) and the shock-absorbing washer (32) are snapped into the inside of the positioning bolt (34). The male connector (1) and the female connector (4) are threaded together by the positioning bolt (34). The positioning bolt (34) is threaded into the inside of the connecting threaded slot (33).

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