Gas-liquid linkage quick switching execution box

Abstract

The utility model provides a gas-liquid linkage quick switching execution box which comprises a control box, an explosion-proof electric valve execution mechanism is arranged in the control box, the control box is provided with a plurality of groups of wiring ports, and each group of wiring ports is provided with butt joint threads used for being connected with an explosion-proof connector and an axial blocking shoulder located at the bottom of the butt joint threads. The explosion-proof joint comprises a butt joint cylinder, a fixed cylinder and a sealing cylinder; two ends of the butt joint cylinder are provided with external threads and are respectively screwed with the butt joint threads and the fixed cylinder; the sealing cylinder sleeves one end, far away from the butt joint cylinder, of the fixed cylinder and rotates relative to the fixed cylinder; the sealing device further comprises a flexible sleeve located in the fixed cylinder, one end of the flexible sleeve is provided with a fixed ring fixedly connected with the butt joint cylinder or the fixed cylinder, the other end of the flexible sleeve is provided with a rotating ring fixedly connected with the sealing cylinder, and sealant is arranged on the inner wall of the flexible sleeve. The utility model has the advantage that the inlet and outlet pipes and wires can be effectively fixed and sealed.

Description

Technical Field

[0001] This utility model relates to the field of actuator boxes, specifically to a gas-liquid linkage quick-cut actuator box. Background Technology

[0002] The actuator box contains an actuator that controls gaseous or liquid media. Therefore, the actuator box needs to be equipped with multiple wiring ports (electrical wires or gas / liquid pipelines). In applications requiring explosion-proof and corrosion-resistant properties, traditional wiring ports often use conventional explosion-proof connectors for explosion protection. The explosion protection method is mostly a rubber ring compression seal. Therefore, the rubber ring and the outer wall of the electrical wire or gas / liquid pipeline are only in compression contact. During installation or in environments with large temperature differences and high dust levels, the shaking of the electrical wire or gas / liquid pipeline can easily cause dust or other media to get stuck between them, creating gaps and reducing the sealing effect. Utility Model Content

[0003] Based on the above problems, the purpose of this utility model is to provide a pneumatic-hydraulic linkage quick-cut execution box that can effectively fix and seal inlet and outlet pipes and lines.

[0004] To address the above problems, the following technical solution is provided: a pneumatic-hydraulic linkage quick-cut actuator box, comprising a control box, wherein an explosion-proof electric valve actuator is provided inside the control box, the control box has multiple sets of wiring ports, each set of wiring ports having a mating thread for connecting an explosion-proof connector and an axial shoulder located at the bottom of the mating thread; the explosion-proof connector includes a mating cylinder, a fixed cylinder, and a sealing cylinder, the mating cylinder having external threads at both ends that screw into the mating thread and the fixed cylinder respectively; the sealing cylinder is fitted around the end of the fixed cylinder away from the mating cylinder and rotates relative to the fixed cylinder; it also includes a flexible sleeve located inside the fixed cylinder, one end of the flexible sleeve having a fixed ring fixedly connected to the mating cylinder or the fixed cylinder, and the other end having a rotating ring fixedly connected to the sealing cylinder, the inner wall of the flexible sleeve having a sealing rubber sleeve.

[0005] The present invention is further configured such that the fixing cylinder has an internal thread that engages with the external thread of the docking cylinder, and an annular shoulder is provided on the inner wall of the fixing cylinder at the bottom of the internal thread; the fixing ring and the flexible sleeve are integrally formed and connected by rubber or silicone material, the outer diameter of the fixing ring is larger than that of the flexible sleeve, and when the docking cylinder and the fixing cylinder are screwed together, the fixing ring is clamped between the end face of the docking cylinder and the annular shoulder to form a seal and to provide circumferential fixation for one end of the flexible sleeve.

[0006] The present invention is further configured such that the inner wall of the end of the sealing cylinder facing away from the docking cylinder is provided with an anti-rotation shoulder, and the inner wall of the anti-rotation shoulder is provided with anti-rotation grooves spaced apart along its circumferential direction; the rotating ring is a rigid ring and is fixedly connected to the flexible sleeve, the outer wall of the rotating ring is provided with meshing grooves that are adapted to the anti-rotation grooves between adjacent rings, and the end of the rotating ring passes through the sealing cylinder and is provided with a snap ring to axially constrain the sealing cylinder.

[0007] The present invention is further configured such that the end of the rotating ring is provided with a retaining ring groove, and the retaining ring is disposed in the retaining ring groove.

[0008] The present invention is further configured such that the end of the sealing cylinder facing the docking cylinder is provided with a first end face tooth arranged in its circumferential direction; the outer wall of the fixed cylinder is provided with a second end face tooth arranged in its circumferential direction and adapted to the first end face tooth; the sealing cylinder rotates relative to the fixed cylinder, and the axial position of the sealing cylinder and the fixed cylinder is displaced when the first end face tooth and the second end face tooth change from the meshing state to the disengaging state or from the disengaging state to the meshing state.

[0009] The present invention is further configured such that both the first end face tooth and the second end face tooth are triangular.

[0010] The present invention is further configured such that the inner wall of the sealing tube is provided with release paper that is spirally wound into a tube and adheres to the inner wall of the sealing tube, and the end of the release paper protrudes from the rotating ring.

[0011] The present invention is further configured such that the inner wall of the end of the docking cylinder away from the fixed cylinder is provided with a clamping section, and the diameter of the end of the clamping section away from the sealing cylinder gradually increases; an elastic clamp is provided in the clamping section, and when the docking cylinder is screwed into the docking thread, the elastic clamp abuts against the axial shoulder, thereby tightening the inner diameter of the elastic clamp.

[0012] The present invention is further provided that the outer walls of the docking cylinder, the fixing cylinder and the sealing cylinder are all provided with hexagonal meshing parts.

[0013] The beneficial effects of this utility model are:

[0014] 1. One end of the connecting sleeve is screwed into the connecting thread of the wiring port via an external thread, and the other end is screwed into the fixed sleeve via an external thread. At the same time, the fixing ring of the flexible sleeve is fixed, so that the end of the flexible sleeve with the fixing ring is fixed relative to the connecting sleeve and the fixed sleeve, while the other end of the flexible sleeve is fixedly connected to the sealing sleeve via a rotating ring. The wire or gas / liquid line passes through the connecting sleeve, the fixed sleeve, the sealing sleeve, the flexible sleeve, the fixing ring, and the rotating ring into the control box. By rotating the sealing sleeve, the flexible sleeve is twisted, causing the inner diameter of its middle section to decrease, and forcing the sealing rubber sleeve located on the inner wall of the flexible sleeve to be pressed and adhered to the outer wall of the wire or gas / liquid line to achieve sealing and fixation. The sealing rubber sleeve is selected as 3M 4229P or 3M 4910 adhesive.

[0015] 2. After the connecting sleeve is installed, screw on the fixing sleeve, which forces the fixing ring to be clamped between the end face of the connecting sleeve and the annular shoulder to form a fixed seal at the same time.

[0016] 3. The anti-rotation groove and the meshing groove are matched to realize the torque transmission between the sealing cylinder and the rotating ring, while the snap ring is used to fix the sealing cylinder to prevent it from falling off;

[0017] 4. When the sealing cylinder rotates, its inner diameter shrinks due to the torsional effect, and its axial length becomes shorter. This forces the first end face teeth and the second end face teeth to mesh with each other, thereby fixing the circumferential position of the sealing cylinder and preventing it from rotating in the opposite direction.

[0018] 5. The sealing cylinder can achieve circumferential limiting by shortening its axial dimension when rotating in any direction;

[0019] 6. Release paper is used to isolate the inserted wires or gas / liquid lines to prevent them from sticking together during insertion. After the wires or gas / liquid lines are inserted, pull them out from the end of the release paper to expose the sealing tube. Then, rotate the sealing tube to achieve a seal.

[0020] 7. After the fixing cylinder is tightened, the elastic clamp is compressed by the axial shoulder to shrink it, thereby axially fixing the wire or gas / liquid pipeline. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the box structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the internal structure of the box of this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the explosion-proof connector of this utility model.

[0024] Figure 4 This is a full-section three-dimensional structural diagram of the explosion-proof connector of this utility model.

[0025] Figure 5 This is a three-dimensional structural diagram of the explosion-proof connector of this utility model.

[0026] Figure 6 This is a full-section three-dimensional structural diagram of the explosion-proof connector of this utility model.

[0027] The labels in the diagram have the following meanings: 10-Control box; 11-Explosion-proof electric valve actuator; 12-Connecting port; 121-Butt thread; 122-Axial shoulder; 20-Explosion-proof connector; 21-Butt sleeve; 211-External thread; 212-Tightening section; 22-Fixing sleeve; 221-Internal thread; 222-Annular shoulder; 223-Second end face tooth; 23-Sealing sleeve; 231-Anti-rotation shoulder; 2311-Anti-rotation groove; 232-First end face tooth; 24-Flexible sleeve; 241-Fixing ring; 242-Rotating ring; 2421-Meshing groove; 2422-Snap ring groove; 243-Sealing sleeve; 25-Snap ring; 26-Release paper; 30-Elastic clamp; 40-Hexagonal meshing part. Detailed Implementation

[0028] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0029] refer to Figures 1 to 6 ,like Figures 1 to 6 The illustrated pneumatic-hydraulic linkage quick-cut actuator box includes a control box 10, which houses an explosion-proof electric valve actuator 11. The control box 10 has multiple sets of wiring ports 12, each set of wiring ports 12 having a mating thread 121 for connecting to an explosion-proof connector 20 and an axial shoulder 122 located at the bottom of the mating thread 121. The explosion-proof connector 20 includes a mating cylinder 21, a fixed cylinder 22, and a sealing cylinder 23. The mating cylinder 21 has external threads 211 at both ends, which are screwed into the mating thread 121 and the fixed cylinder 22, respectively. The sealing cylinder 23 is fitted around the end of the fixed cylinder 22 away from the mating cylinder 21 and rotates relative to the fixed cylinder 22. The device also includes a flexible sleeve 24 located inside the fixed cylinder 22. One end of the flexible sleeve 24 has a fixed ring 241 fixedly connected to the mating cylinder 21 or the fixed cylinder 22, and the other end has a rotating ring 242 fixedly connected to the sealing cylinder 23. The inner wall of the flexible sleeve 24 has a sealing rubber sleeve 243.

[0030] In the above structure, one end of the docking cylinder 21 is screwed into the docking thread 121 of the wiring port 12 via the external thread 211, and the other end is screwed into the fixing cylinder 22 via the external thread 211. At the same time, the fixing ring 241 of the flexible sleeve 24 is fixed, so that the end of the flexible sleeve 24 with the fixing ring 241 is fixed relative to the docking cylinder 21 and the fixing cylinder 22, while the other end of the flexible sleeve 24 is fixedly connected to the sealing cylinder 23 via the rotating ring 242. The wire or gas / liquid pipeline passes through the docking cylinder 21, the fixing cylinder 22, the sealing cylinder 23, the flexible sleeve 24, the fixing ring 241, and the rotating ring 242 into the control box 10. By rotating the sealing cylinder 23, the flexible sleeve 24 is twisted, causing the inner diameter of its middle section to shrink, and forcing the sealing rubber cylinder 243 located on the inner wall of the flexible sleeve 24 to be squeezed and adhered to the outer wall of the wire or gas / liquid pipeline to achieve sealing and fixation. The sealing rubber cylinder 243 is selected as 3M4229P or 3M4910.

[0031] In this embodiment, the fixing cylinder 22 is provided with an internal thread 221 that engages with the external thread 211 of the docking cylinder 21. The inner wall of the fixing cylinder 22 is provided with an annular shoulder 222 at the bottom of the internal thread 221. The fixing ring 241 and the flexible sleeve 24 are integrally formed and connected by rubber or silicone material. The outer diameter of the fixing ring 241 is larger than that of the flexible sleeve 24. When the docking cylinder 21 and the fixing cylinder 22 are engaged, the fixing ring 241 is clamped between the end face of the docking cylinder 21 and the annular shoulder 222 to form a seal and to provide circumferential fixation for one end of the flexible sleeve 24.

[0032] In the above structure, after the docking cylinder 21 is installed, the fixing cylinder 22 is screwed on, which forces the fixing ring 241 to be clamped between the end face of the docking cylinder and the annular shoulder 222 to form a fixed seal at the same time.

[0033] In this embodiment, the inner wall of the end of the sealing cylinder 23 facing away from the docking cylinder 21 is provided with an anti-rotation shoulder 231, and the inner wall of the anti-rotation shoulder 231 is provided with anti-rotation grooves 2311 spaced apart along its circumferential direction; the rotating ring 242 is a rigid ring (metal or plastic material) and is fixedly connected to the flexible sleeve 24 (adhesive bonding or integral vulcanization connection), the outer wall of the rotating ring 242 is provided with meshing grooves 2421 that are adapted to the anti-rotation grooves 2311 between adjacent rings, and the end of the rotating ring 242 extends out of the sealing cylinder 23 and is provided with a retaining spring 25 to axially constrain the sealing cylinder 23.

[0034] In the above structure, the anti-rotation groove 2311 and the meshing groove 2421 are adapted to realize the torque transmission between the sealing cylinder 23 and the rotating ring 242, and the snap ring 25 is used to fix the sealing cylinder 23 to prevent it from falling off.

[0035] In this embodiment, the end of the rotating ring 242 is provided with a retaining ring groove 2422, and the retaining ring 25 is disposed in the retaining ring groove 2422.

[0036] In this embodiment, the sealing cylinder 23 has a first end face tooth 232 arranged in its circumferential direction at one end facing the docking cylinder 21; the outer wall of the fixed cylinder 22 has a second end face tooth 223 arranged in its circumferential direction and adapted to the first end face tooth 232; the sealing cylinder 23 rotates relative to the fixed cylinder 22, and the axial position of the sealing cylinder 23 and the fixed cylinder 22 is displaced when the first end face tooth 232 and the second end face tooth 223 change from the meshing state to the disengaging state or from the disengaging state to the meshing state.

[0037] In the above structure, when the sealing cylinder 23 rotates, its inner diameter shrinks due to the torsional effect, and its axial length becomes shorter. This forces the first end face tooth 232 and the second end face tooth 223 to mesh with each other to fix the circumferential position of the sealing cylinder 23 and prevent it from rotating in the opposite direction.

[0038] In this embodiment, both the first end face tooth 232 and the second end face tooth 223 are triangular.

[0039] In the above structure, the sealing cylinder 23 can be circumferentially limited by the shortening of its axial dimension when rotating in any direction.

[0040] In this embodiment, the inner wall of the sealing tube 243 is provided with release paper 26 which is spirally wound into a tube and is attached to the inner wall of the sealing tube 243. The end of the release paper 26 extends out from the rotating ring 242.

[0041] In the above structure, the release paper 26 is used to isolate the inserted wires or gas / liquid lines to prevent them from sticking together during insertion. After the wires or gas / liquid lines are inserted, they can be pulled out from the end of the release paper 26 to expose the sealing tube 243. Then, rotating the sealing tube 23 can achieve a seal.

[0042] In this embodiment, the inner wall of the end of the docking cylinder 21 away from the fixed cylinder 22 is provided with a clamping section 212, and the diameter of the end of the clamping section 212 away from the sealing cylinder 23 gradually increases; the clamping section 212 is provided with an elastic clamping section 30, and when the docking cylinder 21 is screwed with the docking thread 121, the elastic clamping head 30 abuts against the axial shoulder 122, thereby tightening the inner diameter of the elastic clamping head 30.

[0043] In the above structure, after the fixed cylinder 22 is tightened, the elastic clamp 30 is compressed by the axial shoulder 122 to shrink it, thereby axially fixing the wire or gas / liquid pipeline.

[0044] In this embodiment, the outer walls of the docking cylinder 21, the fixing cylinder 22 and the sealing cylinder 23 are all provided with hexagonal meshing parts 40.

[0045] In the above structure, the hexagonal engagement part 40 can be used with a wrench to twist.

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A gas-liquid linkage quick switching execution box, comprising a control box, an explosion-proof electric valve actuator is arranged in the control box, the control box is provided with a plurality of groups of wiring ports, characterized in that: Each group of wiring ports is provided with a butt thread for connecting an explosion-proof connector and an axial shoulder at the bottom of the butt thread; the explosion-proof connector comprises a butt cylinder, a fixed cylinder and a sealing cylinder, both ends of the butt cylinder are provided with external threads and are respectively screwed with the butt thread and the fixed cylinder; the sealing cylinder is sleeved on the end of the fixed cylinder away from the butt cylinder and rotates relative to the fixed cylinder; further comprising a flexible sleeve in the fixed cylinder, one end of the flexible sleeve is provided with a fixed ring in fixed connection with the butt cylinder or the fixed cylinder, the other end is provided with a rotating ring in fixed connection with the sealing cylinder, and the inner wall of the flexible sleeve is provided with a sealing rubber tube.

2. The pneumatic-hydraulic quick-action execution box according to claim 1, characterized in that: The fixed cylinder is provided with an internal thread screwed with the external thread of the butt cylinder, and the inner wall of the fixed cylinder is provided with an annular shoulder at the bottom of the internal thread; the fixed ring and the flexible sleeve are integrally connected in rubber or silicone material, and the outer diameter of the fixed ring is greater than that of the flexible sleeve and is clamped between the end face of the butt cylinder and the annular shoulder when the butt cylinder and the fixed cylinder are screwed to form a seal and provide circumferential fixation for one end of the flexible sleeve.

3. The pneumatic-hydraulic quick-action execution box according to claim 1 or 2, characterized in that: The inner wall of the end of the sealing cylinder away from the butt cylinder is provided with a rotation stop shoulder, and the inner wall of the rotation stop shoulder is provided with rotation stop grooves spaced apart along the circumferential direction thereof; the rotating ring is rigid and fixedly connected with the flexible sleeve, and the outer wall of the rotating ring is provided with meshing grooves adjacent to the rotation stop grooves; the end of the rotating ring penetrates out of the sealing cylinder and is provided with a snap spring for axially restraining the sealing cylinder.

4. The pneumatic-hydraulic quick-action execution box according to claim 3, characterized in that: The end of the rotating ring is provided with a snap spring groove, and the snap spring is arranged in the snap spring groove.

5. The pneumatic-hydraulic quick-action execution box according to claim 3, characterized in that: The end of the sealing cylinder facing the butt cylinder is provided with first end face teeth arranged along the circumferential direction thereof; the outer wall of the fixed cylinder is provided with second end face teeth arranged along the circumferential direction thereof and adapted to the first end face teeth; the sealing cylinder rotates relative to the fixed cylinder, and the axial position of the sealing cylinder and the fixed cylinder changes when the first end face teeth and the second end face teeth change from the meshing state to the disengaging state or from the disengaging state to the meshing state.

6. The gas-hydraulic quick-action execution box according to claim 5, characterized in that: The first end face teeth and the second end face teeth are both triangular.

7. The pneumatic-hydraulic quick-action execution box according to claim 1, characterized in that: The inner wall of the sealing rubber tube is provided with release paper formed into a cylinder by spiral winding and attached to the inner wall of the sealing rubber tube, and the end of the release paper penetrates out of the rotating ring.

8. The pneumatic-hydraulic quick-action execution box according to claim 1, characterized in that: The inner wall of the end of the butt cylinder away from the fixed cylinder is provided with a forcing section, and the diameter of the end of the forcing section away from the sealing cylinder gradually increases; the forcing section is provided with an elastic clamp inside, and the elastic clamp abuts against the axial shoulder when the butt cylinder is screwed with the butt thread, so as to tighten the inner diameter of the elastic clamp.

9. The pneumatic-hydraulic quick-action execution box according to claim 1, characterized in that: The outer walls of the butt cylinder, the fixed cylinder and the sealing cylinder are all provided with hexagonal meshing parts.

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