Leakage-proof device for flange connection of RGV

Abstract

The utility model discloses an RGV trolley flange connection leakproof device which comprises an RGV trolley and a buffer tank, a second flange and an inflatable air bag are arranged at the top of a material receiving pipe of the RGV trolley, a discharging pipe of the buffer tank is connected with a push cylinder through a movable pipe joint, and a groove is formed in the upper end of the movable pipe joint and matched with an annular open groove in the inner wall of the buffer tank in a guiding mode. During butt joint, the push cylinder drives the movable pipe joint to move downwards, the air bag is inflated and expands to seal a flange gap, and meanwhile the groove and the annular groove form a multi-stage flow guide sealing structure. By means of the collaborative design of pneumatic sealing and dynamic pipe joint accurate position adjustment, flexible sealing of flange gaps and coaxial butt joint of the pipe body are achieved, the material leakage rate is effectively reduced, and the device is suitable for efficient and environment-friendly transfer of dust-prone powder such as sodium monofluorophosphate.

Description

TECHNICAL FIELD

[0001] The utility model relates to material conveying technical field, concretely is a kind of RGV trolley flange coupling leak protection device. BACKGROUND

[0002] Single sodium monofluorophosphate production process adopts fusion polymerization reaction, raw material is high-temperature molten reaction in single graphite reactor, after reaction, material is collected by RGV trolley after cooling and sent to subsequent processing process.

[0003] When RGV trolley receives material, RGV trolley and buffer tank are directly connected by flange, there is gap between flange, and powdery material in buffer tank is easy to fall to ground, causing on-site environmental pollution. SUMMARY

[0004] The utility model provides a kind of RGV trolley flange coupling leak protection device, can effectively control the sealing between the flange of material tank and the flange of buffer tank in the process that RGV trolley receives material, to avoid material spillage.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is: a kind of RGV trolley flange coupling leak protection device, including RGV trolley and buffer tank, RGV trolley is equipped with RGV material tank, RGV material tank top is equipped with material receiving pipe, buffer tank bottom is equipped with discharge pipe;

[0006] First flange is equipped on the discharge pipe, second flange is equipped on the material receiving pipe, and air bag is also equipped on the upper plane of second flange.

[0007] In preferred scheme, the RGV trolley is equipped with inflating device, and the air bag is connected with the inflating device by gas supply hose.

[0008] In preferred scheme, the discharge pipe is equipped with discharge valve, and the material receiving pipe is equipped with material receiving valve.

[0009] In preferred scheme, the material receiving pipe lower end is also equipped with a section of movable pipe joint, and the movable pipe joint can move in vertical direction.

[0010] In preferred scheme, the movable pipe joint is connected with the discharge pipe by sleeve connection, and the first flange is arranged at the lower end of the movable pipe joint.

[0011] In preferred scheme, the discharge pipe outer wall is fixed with push cylinder, and the push rod of the push cylinder faces downward and is connected and fixed with the top surface of the first flange.

[0012] In preferred scheme, the discharge pipe inner wall is equipped with annular slot, and the upper end of the movable pipe joint is located in the annular slot.

[0013] In the preferred solution, the upper end of the movable pipe section is provided with a bevel which is inclined downward from the outer wall to the inner wall.

[0014] In the preferred solution, the width of the bevel is greater than the width of the annular groove.

[0015] The RGV trolley flange coupling leak-proof device provided by the utility model has the following beneficial effects by adopting the above structure:

[0016] (1) The inflatable air bag structure arranged on the second flange expands to form a flexible sealing ring when the flanges are docked, effectively filling the assembly gap between the flange planes, solving the powder leakage problem existing in the traditional rigid flange connection, and significantly reducing environmental pollution caused by material spilling;

[0017] (2) The movable pipe section realizes up-down displacement adjustment through the push rod, can minimize the distance between the upper and lower flanges, and ensure the sealing performance after the air bag is inflated;

[0018] (3) The bevel on the movable pipe section forms a material flow guide surface, which can solve the problem that the material enters the gap between the movable pipe section and the discharge pipe during the discharging process. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further described in connection with the drawings and examples:

[0020] Fig. 1 It is the whole structure schematic diagram of the utility model.

[0021] Fig. 2 It is the discharge pipe and movable pipe section structure schematic diagram of the utility model.

[0022] In the drawing: RGV trolley 1, buffer tank 2, discharge pipe 201, RGV material tank 3, material receiving pipe 301, discharge valve 4, material receiving valve 5, first flange 6, second flange 7, air bag 8, inflator 9, air hose 10, movable pipe section 11, annular groove 12, bevel 13, push cylinder 14, push rod 141. DETAILED DESCRIPTION

[0023] As Figs. 1-2 In the preferred solution, the upper end of the movable pipe section is provided with a bevel which is inclined downward from the outer wall to the inner wall.

[0024] The discharge pipe 201 is provided with a first flange 6, and the material receiving pipe 301 is provided with a second flange 7, and an air bag 8 is further arranged on the upper plane of the second flange 7.

[0025] In a preferred embodiment, the RGV trolley 1 is equipped with an air inflator 9, and the airbag 8 is connected to the air inflator 9 via an air delivery hose 10.

[0026] In a preferred embodiment, the discharge pipe 201 is provided with a discharge valve 4, and the receiving pipe 301 is provided with a receiving valve 5.

[0027] In a preferred embodiment, a movable pipe section 11 is also installed at the lower end of the receiving pipe 301, and the movable pipe section 11 can move vertically.

[0028] In a preferred embodiment, the movable pipe section 11 is sleeved and connected to the feed pipe 201, and the first flange 6 is located at the lower end of the movable pipe section 11.

[0029] In a preferred embodiment, a pusher cylinder 14 is fixed on the outer wall of the feed pipe 201, and the pusher rod 141 of the pusher cylinder 14 faces downward and is connected and fixed to the top surface of the first flange 6.

[0030] In a preferred embodiment, the inner wall of the feed pipe 201 is provided with an annular groove 12, and the upper end of the movable pipe section 11 is located in the annular groove 12.

[0031] In a preferred embodiment, the upper end of the movable tube section 11 is provided with a bevel 13, which slopes downward from the outer wall of the movable tube section 11 toward the inner wall.

[0032] In a preferred embodiment, the width of the bevel 13 is greater than the width of the annular groove 12.

[0033] The working principle of the RGV trolley flange connection leak-proof device disclosed in this utility model is as follows:

[0034] During the docking phase: After the RGV trolley 1 moves to a position below the buffer tank 2, the hydraulic pusher cylinder 14 pushes the movable pipe section 11 down until the distance between the first flange 6 and the second flange 7 reaches 3mm and then stops.

[0035] Sealing stage: Air pump 9 fills air bag 8 with 0.3MPa compressed air, air bag 8 expands to form an annular protrusion with a height of 8mm, filling the gap between the first flange 6 and the second flange 7;

[0036] The discharge valve 4 of the buffer tank 2 and the receiving valve 5 of the receiving pipe 301 are opened simultaneously, and the material enters the RGV tank 3 through the discharge pipe 201-movable pipe section 11-receiving pipe 301;

[0037] After unloading is completed, the air pump 9 draws air to contract the airbag 8, the push cylinder 14 pulls back the movable pipe section 11 to reset, and the RGV trolley 1 moves out of the work station.

Claims

1. A leak-proof device for an RGV trolley flange connection, comprising an RGV trolley (1) and a buffer tank (2), characterized in that: The RGV trolley (1) is equipped with an RGV tank (3), the top of the RGV tank (3) is equipped with a receiving pipe (301), and the bottom of the buffer tank (2) is equipped with a discharge pipe (201). The feed pipe (201) is provided with a first flange (6), the receiving pipe (301) is provided with a second flange (7), and an airbag (8) is also provided on the upper surface of the second flange (7).

2. The RGV trolley flange connection leak-proof device according to claim 1, characterized in that: The RGV trolley (1) is equipped with an air pump (9), and the airbag (8) is connected to the air pump (9) through an air delivery hose (10).

3. The RGV trolley flange connection leak-proof device according to claim 1, characterized in that: The discharge pipe (201) is equipped with a discharge valve (4), and the receiving pipe (301) is equipped with a receiving valve (5).

4. The RGV trolley flange connection leak-proof device according to claim 1, characterized in that: The lower end of the receiving pipe (301) is also equipped with a movable pipe section (11), which can move vertically.

5. The RGV trolley flange connection leak-proof device according to claim 4, characterized in that: The movable pipe section (11) is connected to the feed pipe (201) by a sleeve, and the first flange (6) is located at the lower end of the movable pipe section (11).

6. The RGV trolley flange connection leak-proof device according to claim 5, characterized in that: A push cylinder (14) is fixed on the outer wall of the feed pipe (201). The push rod (141) of the push cylinder (14) faces downward and is connected and fixed to the top surface of the first flange (6).

7. The RGV trolley flange connection leak-proof device according to claim 4, characterized in that: The inner wall of the feed pipe (201) is provided with an annular groove (12), and the upper end of the movable pipe section (11) is located in the annular groove (12).

8. The RGV trolley flange connection leak-proof device according to claim 7, characterized in that: The upper end of the movable tube section (11) is provided with a bevel (13), which slopes downward from the outer wall of the movable tube section (11) towards the inner wall.

9. A leak-proof device for RGV trolley flange connection according to claim 8, characterized in that: The width of the bevel (13) is greater than the width of the annular groove (12).

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