A drip-proof structure and EDC return pipeline

Abstract

The present invention relates to the technical field of anti-drip technology for EDC return pipelines, specifically to an anti-drip structure and an EDC return pipeline, the anti-drip structure comprising: a fixed baffle, which is arranged on the inner wall of the EDC return pipe and has an annular structure, and an anti-drip component, comprising an elastic seal, an anti-leakage component and a range-extending component; the beneficial effects are: the piston head is pressed outward by liquid, the holding spring is compressed, the guide sleeve moves outward to drive the movable block to move outward, the wire rope is loosened by the cooperation of multiple sets of longitudinal pulleys, and the length of the loosened wire rope is three times the moving distance of the guide sleeve. The loosened wire rope causes the shrapnel to reel in the traction rope, and the turn plate rotates outward, thereby opening the turn plate and not affecting the passage of liquid. On the contrary, when the EDC return pipe is not in use, the piston head is held by the holding spring to cooperate with the fixed baffle to seal the EDC return pipe, the piston head drives the guide sleeve to move, the connecting rod drives the movable block to move, so that the wire rope is tightened to drive the turn plate to close, thereby preventing liquid from dripping.

Description

Technical Field

[0001] The invention relates to the technical field of EDC return pipeline dripping prevention, in particular to an anti-drip structure and an EDC return pipeline. Background Art

[0002] EDC is a water-soluble carbodiimide, which is used as a carboxyl activation agent in amide synthesis. It is also used to activate phosphate groups, cross-link proteins and nucleic acids, and prepare immunoconjugates. However, EDC requires a fluid pipeline system for transportation.

[0003] In existing EDC fluid piping systems, an EDC return line is usually provided to return the EDC.

[0004] The current EDC return pipeline is provided with an anti-drip structure, which makes it easy for EDC to drip during use, causing environmental pollution. Summary of the Invention

[0005] The object of the present invention is to provide an anti-drip structure and an EDC return pipeline to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A drip-proof structure, characterized in that: the drip-proof structure comprises:

[0008] A fixed baffle, arranged on the inner wall of the EDC return pipe and having an annular structure; and

[0009] The anti-drip assembly includes an elastic seal, an anti-leakage component and a range extender. The elastic seal includes a supporting spring, a piston head connected to one end of the supporting spring, a supporting block connected to the other end, a supporting plate, a guide sleeve connected to the piston head, and a guide block matched with the guide sleeve. The piston head has a truncated cone structure, and the small diameter end faces the fixed baffle. The diameter of the small end of the piston head is smaller than the inner diameter of the fixed baffle. The diameter of the large end of the piston head is larger than the inner diameter of the fixed baffle and smaller than the inner diameter of the EDC return pipe. The guide block is fixed on the surface of the support block, and the cross section is a "T"-shaped structure, and is inserted into the inside of the guide sleeve. The guide sleeve and the guide block cooperate to protect the supporting spring and laterally limit the piston head. One end of the support plate is connected to the inner wall of the EDC return pipe, and the other end is connected to the support block. There are multiple groups of support plates, and they are in a "cross"-shaped structure. The fixed baffle, piston head and support block are all coaxially arranged with the EDC return pipe. The piston head and the fixed baffle cooperate to seal the EDC return pipe, and the anti-leakage component prevents leakage of the EDC return pipe.

[0010] Preferably, the leak prevention component includes a rotating shaft, a rotating plate sleeved on the surface of the rotating shaft, an elastic telescopic component, and a leak prevention seal component. Both ends of the rotating shaft are inserted into the inner wall of the EDC return pipe, and the rotating shaft is longitudinally arranged. The diameter of the rotating plate is equal to the inner diameter of the EDC return pipe, and the rotating plate rotates around the axis of the rotating shaft.

[0011] Preferably, the elastic telescopic component includes a fixed base, a traction groove formed on the surface of the fixed base, a fixed shaft connected to the traction groove, a spring piece, and a traction rope. The fixed base is fixed to the upper end of the inner wall of the EDC return pipe. The cross-section of the traction groove is in a "C" - shaped structure. The fixed shaft is longitudinally arranged, and the spring piece is sleeved on the surface of the fixed shaft. The spring piece is a coiled spring piece, one end of the spring piece is connected to the fixed shaft, the other end is connected to the traction rope, and the other end of the traction rope is connected to the outer surface of the rotating plate.

[0012] Preferably, when the end of the rotating plate connected to the traction rope overlaps on the surface of the fixed base, the contact surface between the rotating plate and the fixed base coincides, and the rotating plate is located outside the support block, and the fixed base is located outside the rotating plate.

[0013] Preferably, the leak prevention seal component includes a seal groove and an elastic sealing strip arranged inside the seal groove. The seal groove is formed on the inner wall of the EDC return pipe. The seal groove is in an annular structure, and there are two groups of the EDC return pipe and the seal groove. The two groups of seal grooves are located on both sides of the rotating shaft and are symmetrically distributed with respect to the axis of the rotating shaft, and the distance between the two groups of seal grooves is less than the thickness of the rotating plate.

[0014] Preferably, the range extender component includes a steel wire rope, a fixed block connected to the steel wire rope, a longitudinal fixed bracket, a transverse fixed bracket, a movable component, a pulley component, and a limit sliding component. The longitudinal fixed bracket is fixed to the upper end of the inner wall of the EDC return pipe. The transverse fixed bracket is fixed to the middle end of the inner wall of the EDC return pipe, and the included angle between the transverse fixed bracket and the longitudinal fixed bracket is 90 degrees. The other end of the steel wire rope is connected to the inner surface of the rotating plate, and the connection point of the steel wire rope and the rotating plate is symmetrically arranged with the connection point of the traction rope and the rotating plate. The fixed block is fixed to the upper end surface of the longitudinal fixed bracket.

[0015] Preferably, the movable component includes a connecting rod, a movable block connected to the connecting rod, and a movable bracket arranged on the surface of the movable block. The connecting rod is in an "L" - shaped structure and the other end is connected to the upper end of the guide sleeve. The movable block is in an arc - shaped plate structure, and the movable bracket is fixed to the lower surface of the movable block.

[0016] Preferably, the pulley component includes a longitudinal pin shaft, a longitudinal pulley sleeved on the surface of the longitudinal pin shaft, a transverse pin shaft, and a transverse pulley sleeved on the surface of the transverse pin shaft. There are multiple groups of longitudinal pin shafts, and two groups of longitudinal pin shafts are fixed to the surface of the movable bracket, and one group of longitudinal pin shafts is fixed to the lower end surface of the longitudinal fixed bracket. The transverse pin shaft is fixed to the upper surface of the transverse fixed bracket, and the central plane of the longitudinal pulley coincides with the longitudinal central plane of the EDC return pipe.

[0017] Preferably, the limiting sliding member includes a limiting slider and a limiting groove cooperating with the limiting slider, the limiting groove is opened at the upper end of the inner wall of the EDC return pipe, the limiting slider is fixed on the upper end surface of the movable block, and the cross-sections of the limiting slider and the limiting groove are both "T" shaped.

[0018] An EDC return pipeline comprises the aforementioned anti-drip structure.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention uses liquid to press the piston head outward, compress the supporting spring, and move the guide sleeve outward to drive the movable block to move outward. The steel wire rope is loosened by the cooperation of multiple sets of longitudinal pulleys, and the length of the loosened steel wire rope is three times the moving distance of the guide sleeve. The loosened steel wire rope causes the spring to reel in the traction rope, and the turn plate rotates outward, thereby opening the turn plate and not affecting the passage of liquid. On the contrary, when the EDC return pipe is not used, the supporting spring supports the piston head and cooperates with the fixed baffle to seal the EDC return pipe. The piston head drives the guide sleeve to move, and the movable block to move through the connecting rod, so that the steel wire rope is tightened to drive the turn plate to close, thereby preventing liquid from dripping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention;

[0022] Figure 2 It is a rear perspective structural diagram of the present invention;

[0023] Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention;

[0024] Figure 4 Schematic diagram of the three-dimensional structure of the range extender;

[0025] Figure 5 Schematic diagram of the three-dimensional structure of the elastic telescopic member;

[0026] Figure 6 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0027] Figure 7 for Figure 6 A is an enlarged schematic diagram of the structure.

[0028] In the figure: fixed baffle 1, piston head 2, guide sleeve 3, guide block 4, support plate 5, support block 6, longitudinal pin 7, longitudinal pulley 8, wire rope 9, rotating shaft 10, rotating plate 11, traction rope 12, fixed base 13, longitudinal fixed bracket 14, movable block 15, limiting slider 16, connecting rod 17, transverse pulley 18, transverse pin 19, transverse fixed bracket 20, traction groove 21, holding spring 22, fixed block 23, limiting slide groove 24, movable bracket 25, EDC return pipe 26, sealing groove 27, elastic sealing strip 28, fixed shaft 29, and spring piece 30. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1 to 7 , the present invention provides a technical solution:

[0031] A drip-proof structure, characterized in that: the drip-proof structure includes: a fixed baffle 1, which is arranged on the inner wall of the EDC return pipe 26 and has an annular structure; and an anti-drip component, including an elastic seal, a leak-proof component and a range extender, the elastic seal including a supporting spring 22, a piston head 2 connected to one end of the supporting spring 22, a support block 6 connected to the other end, a support plate 5, a guide sleeve 3 connected to the piston head 2 and a guide block 4 matched with the guide sleeve 3, the piston head 2 has a truncated cone structure, and the small diameter end faces the fixed baffle 1, the small end diameter of the piston head 2 is smaller than the inner diameter of the fixed baffle 1, and the large end diameter of the piston head 2 is larger than the fixed baffle 1 The inner diameter is smaller than the inner diameter of the EDC return pipe 26. The guide block 4 is fixed on the surface of the support block 6. The cross section is a "T"-shaped structure and is inserted into the inside of the guide sleeve 3. The guide sleeve 3 and the guide block 4 cooperate to protect the top holding spring 22 and laterally limit the piston head 2. One end of the support plate 5 is connected to the inner wall of the EDC return pipe 26, and the other end is connected to the support block 6. There are multiple groups of support plates 5, and they are in a "cross" structure. The fixed baffle 1, the piston head 2 and the support block 6 are all coaxially arranged with the EDC return pipe 26. The piston head 2 and the fixed baffle 1 cooperate to seal the EDC return pipe 26, and the leak-proof part prevents the EDC return pipe 26 from leaking.

[0032] The present invention can be further configured such that the leak-proof member includes a rotating shaft 10, a rotating plate 11 sleeved on the surface of the rotating shaft 10, an elastic telescopic member, and a leak-proof seal member. Both ends of the rotating shaft 10 are inserted into the inner wall of the EDC return pipe 26, and the rotating shaft 10 is longitudinally arranged. The diameter of the rotating plate 11 is equal to the inner diameter of the EDC return pipe 26, and the rotating plate 11 rotates around the axis of the rotating shaft 10.

[0033] The present invention can be further configured such that the elastic telescopic member includes a fixed base 13, a traction groove 21 opened on the surface of the fixed base 13, a fixed shaft 29 connected to the traction groove 21, a spring piece 30, and a traction rope 12. The fixed base 13 is fixed to the upper end of the inner wall of the EDC return pipe 26. The cross-section of the traction groove 21 is in a "C" shape structure. The fixed shaft 29 is longitudinally arranged, and the spring piece 30 is sleeved on the surface of the fixed shaft 29. The spring piece 30 is a coiled spring piece, and one end of the spring piece 30 is connected to the fixed shaft 29, and the other end is connected to the traction rope 12. The other end of the traction rope 12 is connected to the outer surface of the rotating plate 11. When the end of the rotating plate 11 connected to the traction rope 12 overlaps with the surface of the fixed base 13, the contact surface between the rotating plate 11 and the fixed base 13 coincides, and the rotating plate 11 is located outside the support block 6, and the fixed base 13 is located outside the rotating plate 11.

[0034] The present invention can be further configured such that the leak-proof seal member includes a seal groove 27 and an elastic sealing strip 28 provided inside the seal groove 27. The seal groove 27 is opened on the inner wall of the EDC return pipe 26. The seal groove 27 is in a ring structure, and there are two sets of the EDC return pipe 26 and the seal groove 27. The two sets of seal grooves 27 are located on both sides of the rotating shaft 10 and are symmetrically distributed around the axis of the rotating shaft 10, and the distance between the two sets of seal grooves 27 is less than the thickness of the rotating plate 11.

[0035] The present invention can be further configured such that the range extender includes a steel wire rope 9, a fixed block 23 connected to the steel wire rope 9, a longitudinal fixing bracket 14, a transverse fixing bracket 20, a movable member, a pulley member, and a limit sliding member. The longitudinal fixing bracket 14 is fixed to the upper end of the inner wall of the EDC return pipe 26. The transverse fixing bracket 20 is fixed to the middle end of the inner wall of the EDC return pipe 26, and the included angle between the transverse fixing bracket 20 and the longitudinal fixing bracket 14 is 90 degrees. The other end of the steel wire rope 9 is connected to the inner surface of the rotating plate 11, and the connection point of the steel wire rope 9 and the rotating plate 11 is symmetrically arranged with the connection point of the traction rope 12 and the rotating plate 11. The fixed block 23 is fixed to the upper end surface of the longitudinal fixing bracket 14. The movable member includes a connecting rod 17, a movable block 15 connected to the connecting rod 17, and a movable bracket 25 provided on the surface of the movable block 15. The connecting rod 17 is in an "L" shape structure and is connected to the upper end of the guide sleeve 3 at the other end. The movable block 15 is in an arc-shaped plate structure, and the movable bracket 25 is fixed to the lower end surface of the movable block 15.

[0036] The present invention can be further configured as follows: the pulley member includes a longitudinal pin 7, a longitudinal pulley 8 sleeved on the surface of the longitudinal pin 7, a transverse pin 19 and a transverse pulley 18 sleeved on the surface of the transverse pin 19, multiple groups of longitudinal pins 7 are provided, and two groups of longitudinal pins 7 are fixed on the surface of the movable bracket 25, one group of longitudinal pins 7 is fixed on the lower end of the surface of the longitudinal fixed bracket 14, the transverse pin 19 is fixed on the upper end surface of the transverse fixed bracket 20, and the center plane of the longitudinal pulley 8 coincides with the longitudinal center plane of the EDC return pipe 26; the limiting sliding member includes a limiting slider 16 and a limiting slide 24 cooperated with the limiting slider 16, the limiting slide 24 is opened at the upper end of the inner wall of the EDC return pipe 26, the limiting slider 16 is fixed on the upper end surface of the movable block 15, and the cross-sections of the limiting slider 16 and the limiting slide 24 are both "T"-shaped structures.

[0037] An EDC return pipeline comprises the aforementioned anti-drip structure.

[0038] When the EDC return pipe 26 is used, the liquid presses the piston head 2 outward, and then compresses the holding spring 22. The guide sleeve 3 cooperates with the guide block 4 to limit the piston head 2 laterally, so that the guide sleeve 3 moves outward and drives the movable block 15 to move outward. The limiting slider 16 cooperates with the limiting slot 24 to limit the movable block 15 laterally to prevent the movable block 15 from falling off, thereby loosening the wire rope 9 through the cooperation of multiple sets of longitudinal pulleys 8, and the length of the loosened wire rope 9 is the moving distance of the guide sleeve 3. When the distance is three times, the wire rope 9 is relaxed so that the spring piece 30 reels the traction rope 12, driving the turn plate 11 to rotate outward, thereby opening the turn plate 11 without affecting the passage of liquid. On the contrary, when the EDC reflux pipe 26 is not used, the piston head 2 is supported by the supporting spring 22 to cooperate with the fixed baffle 1 to seal the EDC reflux pipe 26, and the piston head 2 drives the guide sleeve 3 to move, and drives the movable block 15 to move through the connecting rod 17, so that the wire rope 9 is tightened to drive the turn plate 11 to close, thereby preventing liquid from dripping.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A drip-proof structure, characterized in that: The anti-drip structure comprises: A fixed baffle (1) is provided on the inner wall of the EDC return pipe (26) and has an annular structure; and The anti-drip component includes an elastic seal, an anti-leakage component and a range extender. The elastic seal includes a supporting spring (22), a piston head (2) connected to one end of the supporting spring (22), a support block (6) connected to the other end, a support plate (5), a guide sleeve (3) connected to the piston head (2) and a guide block (4) matched with the guide sleeve (3). The piston head (2) is a truncated cone structure, and the small diameter end faces the fixed baffle (1). The diameter of the small end of the piston head (2) is smaller than the inner diameter of the fixed baffle (1). The diameter of the large end of the piston head (2) is larger than the inner diameter of the fixed baffle (1) and smaller than the inner diameter of the EDC return pipe (26). The guide block (4) is fixed on the supporting block ( 6) surface, the cross section is in a "T"-shaped structure, and is inserted into the guide sleeve (3), the guide sleeve (3) and the guide block (4) cooperate to protect the top holding spring (22) and to limit the piston head (2) laterally, one end of the support plate (5) is connected to the inner wall of the EDC return pipe (26), and the other end is connected to the support block (6), the support plate (5) is provided with multiple groups, and is in a "cross"-shaped structure, the fixed baffle (1), the piston head (2) and the support block (6) are all arranged coaxially with the EDC return pipe (26), the piston head (2) and the fixed baffle (1) cooperate to seal the EDC return pipe (26), and the leak-proof part prevents the EDC return pipe (26) from leaking; The leak-proof component comprises a rotating shaft (10), a rotating plate (11) sleeved on the surface of the rotating shaft (10), an elastic telescopic component and a leak-proof sealing component. Both ends of the rotating shaft (10) are plugged into the inner wall of the EDC return pipe (26), and the rotating shaft (10) is arranged longitudinally. The diameter of the rotating plate (11) is equal to the inner diameter of the EDC return pipe (26), and the rotating plate (11) rotates with the axis of the rotating shaft (10) as the center of the circle. The range extender comprises a steel wire rope (9), a fixed block (23) connected to the steel wire rope (9), a longitudinal fixed bracket (14), a transverse fixed bracket (20), a movable part, a pulley part and a limit sliding part, wherein the longitudinal fixed bracket (14) is fixed to the upper end of the inner wall of the EDC return pipe (26), the transverse fixed bracket (20) is fixed to the middle end of the inner wall of the EDC return pipe (26), and the angle between the transverse fixed bracket (20) and the longitudinal fixed bracket (14) is ninety degrees, the other end of the steel wire rope (9) is connected to the inner surface of the rotating plate (11), and the connection between the steel wire rope (9) and the rotating plate (11) and the connection between the traction rope (12) and the rotating plate (11) are symmetrically arranged, and the fixed block (23) is fixed to the upper end of the surface of the longitudinal fixed bracket (14).

2. The anti-drip structure according to claim 1, characterized in that: The elastic telescopic member includes a fixed base (13), a traction groove (21) formed on the surface of the fixed base (13), a fixed shaft (29) connected to the traction groove (21), a spring plate (30), and a traction rope (12). The fixed base (13) is fixed to the upper end of the inner wall of the EDC return pipe (26). The cross-section of the traction groove (21) is in a "C" shape. The fixed shaft (29) is longitudinally arranged, and the spring plate (30) is sleeved on the surface of the fixed shaft (29). The spring plate (30) is a rolled spring plate, and one end of the spring plate (30) is connected to the fixed shaft (29), and the other end is connected to the traction rope (12). The other end of the traction rope (12) is connected to the outer surface of the rotating plate (11).

3. The anti-drip structure according to claim 2, characterized in that: When the end of the rotating plate (11) connected to the traction rope (12) overlaps on the surface of the fixed base (13), the contact surface between the rotating plate (11) and the fixed base (13) coincides, and the rotating plate (11) is located outside the support block (6), and the fixed base (13) is located outside the rotating plate (11).

4. The anti-drip structure according to claim 3, characterized in that: The anti-leakage seal includes a seal groove (27) and an elastic sealing strip (28) arranged inside the seal groove (27). The seal groove (27) is formed on the inner wall of the EDC return pipe (26). The seal groove (27) is in a ring shape, and there are two sets of the EDC return pipe (26) and the seal groove (27). The two sets of seal grooves (27) are located on both sides of the rotating shaft (10) and are symmetrically distributed with respect to the axis of the rotating shaft (10), and the distance between the two sets of seal grooves (27) is less than the thickness of the rotating plate (11).

5. The anti-drip structure according to claim 1, characterized in that: The movable member includes a connecting rod (17), a movable block (15) connected to the connecting rod (17), and a movable bracket (25) arranged on the surface of the movable block (15). The connecting rod (17) is in an "L" shape, and the other end is connected to the upper end of the guide sleeve (3). The movable block (15) is in an arc-shaped plate structure, and the movable bracket (25) is fixed to the lower surface of the movable block (15).

6. The anti-drip structure according to claim 5, characterized in that: The pulley member includes a longitudinal pin shaft (7), a longitudinal pulley (8) sleeved on the surface of the longitudinal pin shaft (7), a transverse pin shaft (19), and a transverse pulley (18) sleeved on the surface of the transverse pin shaft (19). There are multiple sets of longitudinal pin shafts (7), and two sets of longitudinal pin shafts (7) are fixed to the surface of the movable bracket (25). One set of longitudinal pin shafts (7) is fixed to the lower end surface of the longitudinal fixed bracket (14). The transverse pin shaft (19) is fixed to the upper end surface of the transverse fixed bracket (20), and the central plane of the longitudinal pulley (8) coincides with the longitudinal central plane of the EDC return pipe (26).

7. The anti-drip structure according to claim 6, characterized in that: The limit sliding member includes a limit slider (16) and a limit sliding groove (24) that mates with the limit slider (16). The limit sliding groove (24) is formed on the upper end of the inner wall of the EDC return pipe (26). The limit slider (16) is fixed to the upper surface of the movable block (15), and both the cross-sections of the limit slider (16) and the limit sliding groove (24) are in a "T" shape.

8. An EDC reflux pipeline, characterized by: It includes the anti-drip structure according to any one of the above claims 1-7.

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