Air pressure adjusting device for hydrofluoric acid filling

Abstract

The utility model relates to the technical field of air pressure adjustment, in particular to an air pressure adjusting device for hydrofluoric acid filling, which comprises a control valve, a feeding pipe is fixedly connected to the bottom of the control valve, a supporting seat is mounted on the top of the control valve through a bolt, and a rotating ring is movably mounted on the top of the supporting seat. A fixing block is movably mounted at the top of the rotating ring, a plurality of clamping blocks distributed annularly are movably mounted in the fixing block, a control assembly used for controlling the clamping blocks is slidably mounted on the inner wall of the fixing block, a driving assembly used for driving the control assembly is arranged in the supporting seat, a movable groove is formed in the fixing block, and the clamping blocks are movably mounted in the movable groove. And the interior of the movable groove is fixedly connected with a movable shaft used for installing the clamping block, the driving assembly comprises a discharging block, a connecting rod, a rotating block, a lead screw, a supporting block and a movable block, and the discharging block is installed in the fixed block in a sliding mode. According to the utility model, the device can be firmly fixed on the bottle opening during filling.

Description

Technical Field

[0001] The utility model relates to the technical field of air pressure adjustment, in particular to an air pressure adjustment device for filling hydrofluoric acid. Background Art

[0002] Hydrofluoric acid is an aqueous solution of hydrogen fluoride gas. It is a clear, colorless, fuming, corrosive liquid with a strong irritating odor. Inhalation of vapor or contact with skin can cause difficult-to-heal burns. Therefore, great caution is required during the filling process, especially in controlling the air pressure in the tank during the filling process.

[0003] Chinese utility model patent CN202122020528.3 discloses an air pressure adjustment device for filling hydrofluoric acid, comprising: a lifting column, a support table, and a feeding pipe control valve. The lifting column is mechanically connected to the top support table, the control valve is installed on the top of the support table, the feeding pipe is fixed to the rear end of the control valve by bolts, and a feeding gun is provided on the right side of the control valve, and the feeding gun is connected to the control valve by bolts; Beneficial effect: The utility model fills the gap between the pipe mouth at the bottom of the feeding chamber and the container through an anti-overflow plate to prevent hydrofluoric acid from overflowing and irritating odor from causing damage to the human body. The magnetic ring at the bottom of the repulsion end of the top of the anti-overflow plate generates a repulsive force with the magnetic ring inside the anti-overflow plate, replacing the spring structure to avoid corrosion damage.

[0004] However, the above patent only uses the magnetic force of the magnetic ring for fixation. The pressure released during the filling of hydrofluoric acid is very large, and the magnetic force cannot firmly fix this side on the tank body, so there is a risk of loosening and falling during filling. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a gas pressure regulating device for filling hydrofluoric acid.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an air pressure adjustment device for filling hydrofluoric acid, comprising a control valve, a feed pipe is fixedly connected to the bottom of the control valve, a support seat is bolted to the top of the control valve, a rotating ring is movably installed on the top of the support seat, a fixed block is movably installed on the top of the rotating ring, a plurality of clamping blocks distributed in an annular shape are movably installed inside the fixed block, a control component for controlling the clamping block is slidably installed on the inner wall of the fixed block, and a driving component for driving the control component is arranged inside the rotating ring.

[0007] Further: a movable groove is provided inside the fixed block, and a movable shaft for installing the clamping block is fixedly connected inside the movable groove.

[0008] Further: the driving assembly includes a discharging block, a connecting rod, a rotating block, a screw rod, a supporting block and a moving block, the discharging block is slidably installed inside the fixed block, the connecting rod has multiple fixed connections to the inner wall of the rotating ring, the rotating block is fixedly connected to the end of the connecting rod away from the support seat, the screw rod is fixedly connected to the bottom of the discharging block, the supporting block is fixedly connected to the bottom of the screw rod, the rotating block is provided with a thread corresponding to the screw rod, the moving block is fixedly connected to the upper and lower ends of the rotating ring, and the top of the support seat and the bottom of the fixed block are provided with moving grooves corresponding to the moving block.

[0009] Further: the control component includes a slot and a shift block, the slot is formed on the outer wall of the discharge block, and the shift block is fixedly connected to one end of the clamping block and corresponds to the slot.

[0010] Further: a first conduit is fixedly installed on the outer wall of the control valve, a second conduit is fixedly connected to the top of the first conduit, a plurality of discharge holes distributed in an annular shape are opened inside the discharge block, the second conduit is located inside the discharge hole, and the first conduit and the second conduit are made of polypropylene.

[0011] Further: a sealing ring is fixedly installed on the top of the discharge block.

[0012] The utility model has the following beneficial effects:

[0013] Compared with the prior art, the device is installed at the bottle mouth of the can body by setting a rotating ring, a connecting rod, a rotating block screw, a supporting block, a discharging block, a clamping block, a shifting block and a slot. When in use, the device is installed at the bottle mouth of the can body, and then the rotating ring is rotated to drive the rotating block to rotate through the connecting rod. When the rotating block rotates, the discharging block can be moved downward through the cooperation of the screw and the supporting block. When the discharging block moves downward, the control clamping block can be contracted inward to clamp and fix the bottle mouth through the cooperation of the slot and the shifting block, so that the device can be firmly fixed on the bottle mouth during filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model when viewed from above;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 5 for Figure 4 Enlarged structural diagram at A in the middle.

[0019] Legend:

[0020] 1. Control valve; 2. Feed pipe; 3. First conduit; 4. Support seat; 5. Rotating ring; 6. Connecting rod; 7. Rotating block; 8. Screw rod; 9. Support block; 10. Discharge block; 11. Discharge hole; 12. Second conduit; 13. Fixed block; 14. Moving block; 15. Movable groove; 16. Movable shaft; 17. Clamp block; 18. Shift block; 19. Slot; 20. Sealing ring. DETAILED DESCRIPTION

[0021] Reference Figure 1-5 The utility model provides a gas pressure regulating device for filling hydrofluoric acid: it includes a control valve 1, a feed pipe 2 is fixedly connected to the bottom of the control valve 1, a support seat 4 is bolted to the top of the control valve 1, a rotating ring 5 is movably installed on the top of the support seat 4, a fixed block 13 is movably installed on the top of the rotating ring 5, a plurality of clamping blocks 17 distributed in an annular shape are movably installed inside the fixed block 13, a control component for controlling the clamping block 17 is slidably installed on the inner wall of the fixed block 13, and a driving component for driving the control component is arranged inside the rotating ring 5.

[0022] When in use, the device is installed at the bottle mouth of the tank body, and then the driving component is turned on. The clamp block 17 is then driven to contract through the control component to clamp and fix the bottle mouth. Then the hydrofluoric acid enters the control valve 1 through the feed pipe 2, and the pressure is adjusted by the control valve 1 before being transported to the tank body.

[0023] A movable groove 15 is formed inside the fixed block 13 , and a movable shaft 16 for installing a clamping block 17 is fixedly connected inside the movable groove 15 . The clamping block 17 can move freely inside the fixed block 13 through the movable groove 15 and the movable shaft 16 .

[0024] The driving assembly includes a discharging block 10, a connecting rod 6, a rotating block 7, a screw 8, a support block 9 and a moving block 14. The discharging block 10 is slidably installed inside the fixed block 13. The connecting rod 6 has a plurality of fixed connections to the inner wall of the rotating ring 5. The rotating block 7 is fixedly connected to the end of the connecting rod 6 away from the support seat 4. The screw 8 is fixedly connected to the bottom of the discharging block 10. The support block 9 is fixedly connected to the bottom of the screw 8. The interior of the rotating block 7 is provided with a thread corresponding to the screw 8. The moving block 14 is fixedly connected to the upper and lower ends of the rotating ring 5. The top of the support seat 4 and the bottom of the fixed block 13 are provided with a moving groove corresponding to the moving block 14. When in use, the rotating ring 5 is rotated to drive the rotating block 7 to rotate through the connecting rod 6. When the rotating block 7 rotates, the cooperation of the screw 8 and the support block 9 can make the discharging block 10 move downward, so that the clamping block 17 can be controlled to retract inward.

[0025] The control component includes a slot 19 and a shift block 18. The slot 19 is formed on the outer wall of the discharge block 10. The shift block 18 is fixedly connected to one end of the clamping block 17 and corresponds to the slot 19. When the discharge block 10 moves downward, the control clamping block 17 can be retracted inwardly through the slot 19 and the shift block 18 to clamp and fix the bottle mouth.

[0026] A first conduit 3 is fixedly installed on the outer wall of the control valve 1, and a second conduit 12 is fixedly connected to the top of the first conduit 3. A plurality of discharge holes 11 distributed in an annular shape are opened inside the discharge block 10, and the second conduit 12 is located inside the discharge hole 11. The first conduit 3 and the second conduit 12 are made of polypropylene. The hydrofluoric acid with adjusted pressure passes through the first conduit 3 and the second conduit 12 and enters the tank body from the discharge hole 11. At the same time, the second conduit 12 can play a supporting role when the discharge block 10 moves.

[0027] A sealing ring 20 is fixedly mounted on the top of the discharge block 10 to provide a seal during installation.

[0028] Working principle: When in use, the device is installed at the bottle mouth of the tank body, and then the rotating ring 5 is rotated to drive the rotating block 7 to rotate through the connecting rod 6. When the rotating block 7 rotates, the discharge block 10 can be moved downward through the cooperation of the screw rod 8 and the support block 9. When the discharge block 10 moves downward, the control clamping block 17 can be contracted inward to clamp the bottle mouth and fix it through the cooperation of the slot 19 and the shifting block 18. At the same time, the sealing ring 20 on the top of the discharge block 10 can play a sealing role when installing and fixing. Then, hydrofluoric acid enters the control valve 1 through the feed pipe 2, and after the pressure is adjusted by the control valve 1, it passes through the first conduit 3 and the second conduit 12 and enters the tank body from the discharge hole 11.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas pressure regulating device for filling hydrofluoric acid, comprising a control valve (1), characterized in that: The bottom of the control valve (1) is fixedly connected to a feed pipe (2); the top of the control valve (1) is bolted with a support seat (4); the top of the support seat (4) is movably mounted with a rotating ring (5); the top of the rotating ring (5) is movably mounted with a fixed block (13); a plurality of clamping blocks (17) distributed in an annular shape are movably mounted inside the fixed block (13); a control component for controlling the clamping block (17) is slidably mounted on the inner wall of the fixed block (13); and a driving component for driving the control component is arranged inside the rotating ring (5).

2. The gas pressure regulating device for filling hydrofluoric acid according to claim 1, characterized in that: A movable groove (15) is provided inside the fixed block (13), and a movable shaft (16) for mounting a clamping block (17) is fixedly connected inside the movable groove (15).

3. The gas pressure regulating device for filling hydrofluoric acid according to claim 1, characterized in that: The driving assembly comprises a discharge block (10), a connecting rod (6), a rotating block (7), a screw rod (8), a support block (9) and a moving block (14); the discharge block (10) is slidably mounted inside the fixed block (13); the connecting rod (6) has a plurality of fixed connections to the inner wall of the rotating ring (5); the rotating block (7) is fixedly connected to an end of the connecting rod (6) away from the supporting seat (4); the screw rod (8) is fixedly connected to the bottom of the discharge block (10); the supporting block (9) is fixedly connected to the bottom of the screw rod (8); a thread corresponding to the screw rod (8) is provided inside the rotating block (7); the moving block (14) is fixedly connected to the upper and lower ends of the rotating ring (5); and a moving groove corresponding to the moving block (14) is provided at the top of the supporting seat (4) and the bottom of the fixed block (13).

4. The gas pressure regulating device for filling hydrofluoric acid according to claim 3, characterized in that: The control assembly comprises a slot (19) and a shift block (18), wherein the slot (19) is formed on the outer wall of the discharge block (10), and the shift block (18) is fixedly connected to one end of the clamping block (17) and corresponds to the slot (19).

5. The gas pressure regulating device for filling hydrofluoric acid according to claim 3, characterized in that: A first conduit (3) is fixedly mounted on the outer wall of the control valve (1); a second conduit (12) is fixedly connected to the top of the first conduit (3); a plurality of discharge holes (11) distributed in an annular shape are provided inside the discharge block (10); the second conduit (12) is located inside the discharge hole (11); and the first conduit (3) and the second conduit (12) are made of polypropylene.

6. The gas pressure regulating device for filling hydrofluoric acid according to claim 3, characterized in that: A sealing ring (20) is fixedly mounted on the top of the discharge block (10).

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