Quick discharge valve structure for preparing modified methylhexahydrophthalic anhydride

Abstract

The invention provides a quick discharging valve structure for preparing modified methylhexahydrophthalic anhydride, and relates to the technical field of discharging valves, the quick discharging valve structure comprises a first material pipe and a second material pipe of a discharging valve, the close ends of the first material pipe and the second material pipe are fixedly connected with a first connecting flange and a second connecting flange respectively, and three connecting columns are fixedly connected between the first connecting flange and the second connecting flange; a detachable middle assembly is arranged between the first material pipe and the second material pipe, the first material pipe is movably sleeved with a lifting assembly, the outer wall of the first material pipe is provided with a protection assembly, the outer wall of the first material pipe is fixedly connected with a mounting base and a first connecting pin with a lock hole, and a first connecting flange is fixedly connected with two bases with holes. The middle assembly comprises a funnel-shaped piston, a connecting seat and two semicircular splicing rings, the rotating rod rotates to control connection and separation of the rotating rod and the connecting seat, so that whether cooperation of the middle assembly, the rotating rod and the electric telescopic rod is limited or not is determined, various states can be easily controlled, operation is easy and convenient, and protection is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of discharge valves, and more specifically, particularly relates to a quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride. Background Art

[0002] In the preparation process of modified methyl hexahydrophthalic anhydride, the discharge valve mainly plays the following roles:

[0003] 1. Control material discharge: control the discharge speed and flow rate of reaction products to ensure the stability and continuity of the production process;

[0004] 2. Ensure production safety: prevent abnormal discharge of materials and avoid possible production accidents;

[0005] 3. Adjust the reaction process: By controlling the discharge amount, the pressure, temperature and other conditions in the reaction system can be indirectly adjusted to optimize the reaction process.

[0006] However, when conventional discharge valves are used in the preparation of modified methyl hexahydrophthalic anhydride, the following problems exist:

[0007] During the preparation of modified methyl hexahydrophthalic anhydride, the product transported through the discharge valve contains impurities such as unreacted raw materials and by-product particles. The presence of impurities will reduce the purity and quality of the modified methyl hexahydrophthalic anhydride. The impurity particles may cause wear and scratches on the pipelines, valves and the interior of downstream equipment during transportation, shortening the service life of the equipment and increasing the frequency and cost of repairing and replacing the equipment.

[0008] Therefore, the discharge valve used for the preparation of modified methyl hexahydrophthalic anhydride needs to have the function of filtering impurities, and for the sake of production efficiency and safety, it is required that the impurities can be quickly cleaned and have certain protective properties to prevent non-professionals from misoperating;

[0009] Based on the above technical requirements, a quick discharge valve structure for the preparation of modified methyl hexahydrophthalic anhydride is proposed. Summary of the invention

[0010] In order to solve the above technical problems, the present invention provides a fast discharge valve structure for preparing modified methyl hexahydrophthalic anhydride to solve the above problems.

[0011] A quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride comprises a material pipe 1 and a material pipe 2 of the discharge valve, the adjacent ends of the material pipe 1 and the material pipe 2 are respectively fixedly connected with a connecting flange 1 and a connecting flange 2, three connecting columns are fixedly connected between the connecting flange 1 and the connecting flange 2, a detachable intermediate component is arranged between the material pipe 1 and the material pipe 2, a lifting component is movably sleeved on the material pipe 1, a protective component is installed on the outer wall of the material pipe 1, a mounting seat and a connecting pin 1 with a lock hole are fixedly connected to the outer wall of the material pipe 1, two bases with holes are fixedly connected to the connecting flange 1, the intermediate component comprises a funnel-shaped piston, a connecting seat and two semicircular splicing rings, the lifting component comprises a lifting rod and a rotating rod, the protective component comprises a baffle, a protective cover and two connecting frames, a collar is movably sleeved on the lifting rod, four equidistant supporting legs are fixedly connected to the side wall of the collar, and the bottoms of the four supporting legs are all fixedly connected to the outer wall of the material pipe 1.

[0012] Preferably, two sliders are fixedly connected to the upper end of the lifting rod, a circular plate is fixedly connected to the bottom of the lifting rod, a rod groove is provided in the middle part of the structure composed of the lifting rod and the circular plate, an annular sealing gasket is fixedly connected to the upper surface of the circular plate, and a group of annular array unfolding frames are fixedly connected to the annular side surface of the circular plate;

[0013] The upper ends of the rotating rod and the rod groove are both threaded sections, the rotating rod is threadedly sleeved in the rod groove, and the upper end of the rotating rod is fixedly connected with a rotating disk.

[0014] Preferably, two vertical frames are fixedly connected to the upper surface of the collar, and vertical slide grooves are provided on the opposite surfaces of the two vertical frames. A connecting ring is fixedly connected to the upper ends of the two vertical frames, and two sliders are respectively clamped in the two slide grooves;

[0015] Among them, an electric telescopic rod is fixedly installed on the mounting seat, and a short frame is fixedly connected to the end of the telescopic rod of the electric telescopic rod, and the end of the short frame is fixedly connected to the side wall of the upper end of the lifting rod.

[0016] Preferably, the lower ends of the two connecting frames are rotatably connected to the two bases respectively, the upper ends of the two connecting frames are fixedly connected to the bottom of the protective cover, and a second connecting pin with a hole is fixedly connected to the connecting frame at the front end;

[0017] Wherein, the connecting pin 1 and the connecting pin 2 are used to connect the lock, and the baffle is fixedly installed on the outer wall of the material pipe 1.

[0018] Preferably, a ring-shaped and soft sealing ring is fixedly connected to the upper end of the inner wall of the structure composed of the second material pipe and the second connecting flange, a U-shaped baffle is fixedly connected to the upper surface of the second connecting flange, and a U-shaped slide rail is provided on the inner wall of the baffle.

[0019] Preferably, a sealing ring 2 is fixedly connected to the lower end of the inner wall of the structure composed of the material pipe 1 and the connecting flange 1, and the bottom surface of the sealing ring 2 is higher than the bottom surface of the connecting flange 1;

[0020] The height difference between the second bottom surface of the sealing ring and the first bottom surface of the connecting flange is equal to the thickness of the circular plate.

[0021] Preferably, the two splicing rings can form a complete circular ring, the inner walls of the two splicing rings are respectively fixedly connected to the limiting ring 1 and the limiting ring 2, and the ring body 1 and the ring body 2 are movably placed in the complete circular ring formed by the two splicing rings;

[0022] Among them, a ring-shaped filter net is fixedly connected between the inner ring surface of ring body one and the outer ring surface of ring body two, the height difference between limit ring one and limit ring two is equal to the upper and lower thickness of ring body one, ring body one and ring body two have the same thickness, the outer diameter of ring body one is equal to the inner diameter of the complete circular ring formed by two spliced ​​rings, and the inner diameter of ring body two is equal to the diameter of the lifting rod.

[0023] Preferably, the second ring body is movably connected to the connecting seat, the diameter of the connecting seat is equal to the diameter of the lifting rod, a threaded groove is provided on the upper surface of the connecting seat, and the bottom of the connecting seat is fixedly connected to the funnel-shaped piston.

[0024] Preferably, the outer walls of the two splicing rings are respectively fixedly connected with a semicircular rod 1 and a semicircular rod 2, both ends of the semicircular rod 1 are fixedly connected with a clamping seat, both ends of the semicircular rod 2 are provided with a clamping groove, and both ends of the semicircular rod 2 are also fixedly connected with a slide bar;

[0025] Among them, the two card seats are fixedly connected with plug rods, the slot tops of the two card slots are provided with slots, the two plug rods are respectively plugged into the two slots, and the two card seats are respectively stuck in the two card slots.

[0026] Preferably, the bottom of the rotating rod is a threaded section, the connecting seat is threadedly sleeved with the lower end of the rotating rod through the threaded groove on the upper surface, the upper and lower surfaces of the splicing ring and the splicing surfaces of the two splicing rings are coated with a sealing coating (fluororubber coating), and the lifting rod is movably sleeved with the material pipe.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The lifting rod and the circular plate at its bottom and the funnel-shaped piston are driven to move by the extension and retraction of the electric telescopic rod and the rotation of the rotating rod. When the electric telescopic rod is extended or retracted, the lifting rod is driven up and down by the short frame, and the distance between the bottom of the funnel-shaped piston and the sealing ring 1 is changed to adjust the flow of the discharge valve. When the electric telescopic rod retracts and the lower end of the funnel-shaped piston is pressed against the sealing ring 1, the material pipe 2 is closed; when the electric telescopic rod is extended and the circular plate is tightly fitted with the sealing ring 2, the material pipe 1 is closed. The rotation of the rotating rod can control its connection and separation with the connecting seat, thereby determining whether to restrict the intermediate component. The rotating rod and the electric telescopic rod can be used together to easily control multiple states, which is simple and convenient to operate and easy to protect.

[0029] 2. The product after the reaction of the modified methyl hexahydrophthalic anhydride flows into the material pipe 1, flows into the circular ring composed of two spliced ​​rings through the middle part of the sealing ring 2, and when passing through the filter screen between the ring body 2 and the ring body 1, the impurities such as the raw materials and by-product particles that have not reacted completely in the product are filtered on the filter screen, and the filtered product flows downward through the middle part of the sealing ring 1 and flows into the material pipe 2. At this time, the product after the reaction of the modified methyl hexahydrophthalic anhydride is normally transported in the material pipe 1, the circular ring composed of two spliced ​​rings and the material pipe 2, and the filtered impurities are retained on the filter screen, so as to prevent the impurities from entering the downstream storage or processing equipment, reduce the wear and blockage of these equipment, extend their service life, and improve the purity of the product.

[0030] 3. After completing the preparations for replacing the filter screen and the piston in the valve, the operator can rotate the rotating rod through the turntable to raise and lower the rotating rod. During the rotation of the rotating rod, when the funnel-shaped piston is against the filter material, continue to rotate the rod to separate its bottom from the connecting seat. When the bottom of the rotating rod is flush with the bottom of the round plate, the operator can move the intermediate component. During the movement, the slide bar slides along the slide rail until the intermediate component is moved out. At this time, the upper and lower positions can be displaced to separate the plug rod and the slot on the card seat and the card slot up and down, thereby completing the separation of the two splicing rings. At this time, the ring body 1 between the limit ring 2 and the limit ring 1 loses the restriction of the limit ring, and the filter screen, splicing ring, connecting seat and funnel-shaped piston can be removed separately for cleaning and replacement. There is no need to clean and replace the valve body, which improves convenience.

[0031] 4. A circle of fluororubber layer is fixed on the annular side wall of the connecting seat. The fluororubber layer on the connecting seat provides friction, so that when the connecting seat and the ring body 2 are put together, the connecting seat will not fall directly after being separated from the bottom of the rotating rod. After cleaning and replacing the parts, the connecting seat can be directly inserted into the ring body 2 and the ring body 2 can be pressed against the funnel-shaped piston to re-merge the two splicing rings. The rotating rod can be reversed to re-connect with the thread of the connecting seat for easy resetting.

[0032] 5. Through the rotation connection between the connecting frame and the base, the protective cover can be deflected to expose and shield the parts on the material tube one. At this time, by installing locks on the connecting pins one and two, the protection of the entire device can be completed to prevent other people from operating it incorrectly. A wire groove can be opened on the protective cover for connecting the electric telescopic rod. The two splicing rings are spliced ​​together, and the round plate is not flush with the bottom surface of the connecting flange one. At this time, the end of the expansion frame connected to the round plate fits the inner wall of the splicing ring. The two splicing rings are limited by the plug rod and the slot in the vertical direction and blocked by the expansion frame in the horizontal direction, achieving the effect of automatically limiting the intermediate component. The intermediate component can be automatically limited or not without operation, which further improves the convenience of operation and achieves the effect of quick operation. The operator cannot disassemble and assemble the intermediate component without opening the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure when the protective cover in the present invention is in a shielding state;

[0034] Figure 2 It is a schematic diagram of the state of the unfolding frame in the splicing ring in the present invention;

[0035] Figure 3 It is a schematic diagram of the position of the connecting column in the present invention;

[0036] Figure 4 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 5 It is a structural schematic diagram of the electric telescopic rod in the present invention;

[0038] Figure 6 It is a schematic diagram of the structure of the connecting ring in the present invention;

[0039] Figure 7 It is a structural schematic diagram of the lifting rod in the present invention;

[0040] Figure 8 It is a structural schematic diagram of the circular plate in the present invention;

[0041] Fig. 9 It is a schematic diagram of the structure of the intermediate component in the present invention;

[0042] Fig.10 It is a structural schematic diagram of the sealing ring 2 and the circular plate in the present invention;

[0043] Fig.11 It is a schematic diagram of the position of the sealing ring 2 in the present invention;

[0044] Fig.12 It is a schematic diagram of the structure of the baffle in the present invention;

[0045] Fig.13 The present invention Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0046] In the figure, the corresponding relationship between the structure names and the reference numerals is as follows: 1, protective cover; 2, material pipe 1; 3, connecting flange 1; 4, connecting flange 2; 5, material pipe 2; 6, baffle; 7, connecting pin 1; 8, base; 9, connecting frame; 10, connecting pin 2; 11, collar; 12, baffle bar; 13, lifting rod; 14, connecting ring; 15, short frame; 16, electric telescopic rod; 17, mounting seat; 18, vertical frame; 19, slide groove; 20, rotating rod; 21, Turntable; 22. Slider; 23. Ring-shaped sealing gasket; 24. Round plate; 25. Expanding frame; 26. Sealing ring 2; 27. Slide rail; 28. Sealing ring 1; 29. ​​Splicing ring; 30. Semicircular rod 1; 31. Clamping seat; 32. Connecting seat; 33. Funnel-shaped piston; 34. Clamping groove; 35. Sliding strip; 36. Semicircular rod 2; 37. Limiting ring 2; 38. Ring body 2; 39. Ring body 1; 40. Limiting ring 1; 41. Rod groove; 42. Connecting column. DETAILED DESCRIPTION

[0047] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0048] See also Figure 1-Figure 13 The present invention provides a quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride, comprising a discharge valve material pipe 1 2 and a material pipe 2 5, wherein the adjacent ends of the material pipe 1 2 and the material pipe 2 5 are respectively fixedly connected with a connection flange 1 3 and a connection flange 2 4, and three connection columns 42 are fixedly connected between the connection flange 1 3 and the connection flange 2 4 (the distribution of the connection columns 42 is shown in FIG. Figure 3 ), a detachable intermediate component is arranged between the material pipe 1 2 and the material pipe 2 5, a lifting component is movably sleeved on the material pipe 2, a protective component is installed on the outer wall of the material pipe 2, a mounting seat 17 and a connecting pin 7 with a lock hole are fixedly connected to the outer wall of the material pipe 2, two bases 8 with holes are fixedly connected to the connecting flange 3, the intermediate component includes a funnel-shaped piston 33, a connecting seat 32 and two semicircular splicing rings 29, the lifting component includes a lifting rod 13 and a rotating rod 20, the protective component includes a baffle 6, a protective cover 1 and two connecting frames 9, a collar 11 is movably sleeved on the lifting rod 13, four equidistant supporting legs are fixedly connected to the side wall of the collar 11, and the bottoms of the four supporting legs are fixedly connected to the outer wall of the material pipe 2, a fluororubber lip seal is installed at the sleeve joint between the inner wall of the material pipe 2 and the lifting rod 13, and the elasticity and fit of the lip seal are utilized to maintain a good sealing effect when the lifting rod 13 moves to prevent material leakage.

[0049] Two sliders 22 are fixedly connected to the upper end of the lifting rod 13, a circular plate 24 is fixedly connected to the bottom of the lifting rod 13, a rod groove 41 is opened in the middle part of the structure composed of the lifting rod 13 and the circular plate 24, an annular sealing gasket 23 is fixedly connected to the upper surface of the circular plate 24, and a group of annular array unfolding frames 25 are fixedly connected to the annular side of the circular plate 24, wherein the upper ends of the rotating rod 20 and the rod groove 41 are both threaded sections, the rotating rod 20 is threadedly sleeved in the rod groove 41, and the top of the rotating rod 20 is fixedly connected to the turntable 21.

[0050] Two vertical frames 18 are fixedly connected to the upper surface of the collar 11, and vertical slide grooves 19 are provided on the opposite surfaces of the two vertical frames 18. The upper ends of the two vertical frames 18 are fixedly connected to the connecting rings 14, and the two sliders 22 are respectively stuck in the two slide grooves 19. Among them, an electric telescopic rod 16 is fixedly installed on the mounting seat 17, and the telescopic rod end of the electric telescopic rod 16 is fixedly connected to the short frame 15, and the end of the short frame 15 is fixedly connected to the side wall of the upper end of the lifting rod 13. The flow control and opening and closing of the discharge valve are carried out by lifting and lowering the electric telescopic rod 16 and rotating the rotating rod 20. At the same time, it can be determined whether the intermediate component is limited, so as to quickly clean and replace the piston and filter in the valve. It cannot be operated from the outside, and it can only be completed by controlling the rotating rod 20 and the electric telescopic rod 16, which is convenient for safety protection.

[0051] The lower ends of the two connecting frames 9 are rotatably connected to the two bases 8 respectively, and the upper ends of the two connecting frames 9 are fixedly connected to the bottom of the protective cover 1. The connecting frame 9 at the front end is fixedly connected with a connecting pin 2 10 with a hole, wherein the connecting pin 1 7 and the connecting pin 2 10 are used to connect the lock, and the baffle 6 is fixedly installed on the outer wall of the material pipe 2.

[0052] A ring-shaped and soft sealing ring 28 is fixedly connected to the upper end of the inner wall of the structure composed of the material pipe 25 and the connecting flange 24. A U-shaped baffle 12 is fixedly connected to the upper surface of the connecting flange 24. A U-shaped slide rail 27 is opened on the inner wall of the baffle 12.

[0053] A sealing ring 26 is fixedly connected to the lower end of the inner wall of the structure composed of the material pipe 2 and the connecting flange 3. The bottom surface of the sealing ring 26 is higher than the bottom surface of the connecting flange 3. The height difference between the bottom surface of the sealing ring 26 and the bottom surface of the connecting flange 3 is equal to the thickness of the circular plate 24.

[0054] The two splicing rings 29 can form a complete circular ring. The inner walls of the two splicing rings 29 are respectively fixedly connected to the limiting ring 1 40 and the limiting ring 2 37. The ring body 1 39 and the ring body 2 38 are movably placed in the complete circular ring formed by the two splicing rings 29. Among them, a ring-shaped filter net is fixedly connected between the inner ring surface of the ring body 1 39 and the outer ring surface of the ring body 2 38. The height difference between the limiting ring 1 40 and the limiting ring 2 37 is equal to the upper and lower thickness of the ring body 1 39. The thickness of the ring body 1 39 is the same as that of the ring body 2 38. The outer diameter of the ring body 1 39 is equal to the inner diameter of the complete circular ring formed by the two splicing rings 29, and the inner diameter of the ring body 2 38 is equal to The diameter of the lifting rod 13, during the normal discharge process of the discharge valve, the product after the reaction of the modified methyl hexahydrophthalic anhydride flows into the material pipe 2, flows into the circular ring composed of the two splicing rings 29 through the middle part of the sealing ring 26, and when passing through the filter net between the ring body 2 38 and the ring body 1 39, the impurities such as the raw materials and by-product particles that have not reacted completely in the product are filtered on the filter net, and the filtered product passes downward through the middle part of the sealing ring 1 28 and flows into the material pipe 2 5. At this time, the product after the reaction of the modified methyl hexahydrophthalic anhydride is normally transported in the material pipe 2, the circular ring composed of the two splicing rings 29 and the material pipe 2 5.

[0055] The second ring body 38 is movably connected to the connecting seat 32 . The diameter of the connecting seat 32 is equal to the diameter of the lifting rod 13 . A threaded groove is provided on the upper surface of the connecting seat 32 . The bottom of the connecting seat 32 is fixedly connected to the funnel-shaped piston 33 .

[0056] The outer walls of the two splicing rings 29 are respectively fixedly connected with a semicircular rod 1 30 and a semicircular rod 2 36, and both ends of the semicircular rod 1 30 are fixedly connected with a holder 31, and both ends of the semicircular rod 2 36 are provided with a slot 34, and both ends of the semicircular rod 2 36 are also fixedly connected with a slide bar 35, wherein the two holders 31 are fixedly connected with a plug rod, and the slot tops of the two slots 34 are provided with slots, and the two plug rods are respectively plugged into the two slots, and the two holders 31 are respectively stuck in the two slots 34. When it is necessary to adjust the unit time flow rate of the product in the discharge valve, the button on the electric telescopic rod 16 can be manually controlled or the telescopic rod of the electric telescopic rod 16 can be remotely controlled wirelessly to extend and retract. These two control methods can select mature electric push rod products on the market according to actual conditions. The telescopic rod of the electric telescopic rod 16 is During telescoping, the lifting rod 13 is lifted and lowered by the short frame 15. During the lifting process of the lifting rod 13, the circular plate 24 and the funnel-shaped piston 33 are driven to move. By changing the distance between the bottom of the funnel-shaped piston 33 and the sealing ring 28, the size of the annular gap is changed, so as to achieve the effect of quickly adjusting the flow of the discharge valve. When it is necessary to close the discharge valve to prevent the product from flowing into the material pipe 25, the telescopic rod of the electric telescopic rod 16 is controlled to retract downward until the slider 22 is blocked by the bottom of the slide groove 19. At this time, the lower end of the funnel-shaped piston 33 at the bottom of the lifting rod 13 is pressed against the sealing ring 28. The sealing ring 28 is a sealing ring made of polytetrafluoroethylene (PTFE) to avoid being corroded by modified methylhexahydrophthalic anhydride. After the lower end of the funnel-shaped piston 33 is pressed against the sealing ring 28, the effect of closing the sealing ring 28 is achieved, and the discharge valve is quickly closed.

[0057] The bottom of the rotating rod 20 is a threaded section, and the connecting seat 32 is threadedly sleeved with the lower end of the rotating rod 20 through the threaded groove on the upper surface. The upper and lower surfaces of the splicing ring 29 and the splicing surfaces of the two splicing rings 29 are coated with a layer of sealing coating. When the two splicing rings 29 are spliced ​​together, the two layers of sealing coating fit together. When the insertion rod on the card seat 31 is inserted into the slot on the card slot 34, the sealing coating on the splicing surface of the two splicing rings 29 is squeezed and slightly deformed, so that the annular surface formed by the splicing of the two splicing rings 29 is sealed. The lifting rod 13 is movably sleeved with the material pipe 2, and the protective cover 1 can be deflected through the rotation connection between the connecting frame 9 and the base 8, thereby completing the exposure and shielding of the components on the material pipe 2. When in the shielding state, Figure 1 As shown, at this time, by installing locks on the connecting pin 1 7 and the connecting pin 2 10, the protection of the entire device can be completed to prevent others from misoperating. A wire groove can be opened on the protective cover 1 for connecting the electric telescopic rod 16. Figure 1 When the two splicing rings 29 are spliced ​​together, the circular plate 24 is not flush with the bottom surface of the connecting flange 3. At this time, the end of the expansion frame 25 connected to the circular plate 24 is in contact with the inner wall of the splicing ring 29. Figure 2As shown, the two splicing rings 29 are limited by the insertion rod and the slot in the vertical direction and blocked by the unfolding frame 25 in the horizontal direction, so as to achieve the effect of automatically limiting the intermediate component. The intermediate component can be limited automatically without any operation, which further improves the operating convenience and achieves the effect of quick operation. The operator cannot disassemble and assemble the intermediate component without opening the protective cover 1.

[0058] Working principle: When in use, the flow control and opening and closing of the discharge valve are carried out by lifting and lowering the electric telescopic rod 16 and rotating the rotating rod 20. At the same time, it can determine whether the intermediate component is limited, so as to quickly clean and replace the piston and filter in the valve. It cannot be operated from the outside, and can only be completed by controlling the rotating rod 20 and the electric telescopic rod 16, which is convenient for safety protection. The specific steps are as follows:

[0059] During the normal discharge process of the discharge valve, the product after the reaction of the modified methyl hexahydrophthalic anhydride flows into the material pipe 1 2, flows into the annulus composed of the two splicing rings 29 through the middle part of the sealing ring 26, and when passing through the filter screen between the ring body 2 38 and the ring body 1 39, the impurities such as raw materials and by-product particles that have not reacted completely in the product are filtered on the filter screen, and the filtered product flows downward through the middle part of the sealing ring 1 28 and flows into the material pipe 2 5. At this time, the product after the reaction of the modified methyl hexahydrophthalic anhydride is normally transported in the material pipe 1 2, the annulus composed of the two splicing rings 29 and the material pipe 2 5, and the filtered impurities are retained on the filter screen, thereby preventing impurities from entering the downstream storage or processing equipment, reducing the wear and blockage of these equipment, and extending their service life, and can improve the purity of the product;

[0060] When it is necessary to adjust the flow rate per unit time of the product in the discharge valve, the telescopic rod 16 can be manually controlled by the button on the electric telescopic rod 16 or the telescopic rod of the electric telescopic rod 16 can be extended and retracted by remote wireless remote control. These two control methods can select mature electric push rod products on the market according to actual conditions. When the telescopic rod of the electric telescopic rod 16 is extended and retracted, the lifting rod 13 is driven to rise and fall through the short frame 15. During the lifting and falling process of the lifting rod 13, the circular plate 24 and the funnel-shaped piston 33 are driven to move. By changing the distance between the bottom of the funnel-shaped piston 33 and the sealing ring 28, the size of the annular gap is changed, so as to achieve the effect of quickly adjusting the flow rate of the discharge valve;

[0061] When it is necessary to close the discharge valve to prevent the product from flowing into the material pipe 25, the telescopic rod of the electric telescopic rod 16 is controlled to retract downward until the slider 22 is blocked by the bottom of the slide groove 19. At this time, the lower end of the funnel-shaped piston 33 at the bottom of the lifting rod 13 is pressed against the sealing ring 128. The sealing ring 128 is made of polytetrafluoroethylene (PTFE) to avoid being corroded by modified methyl hexahydrophthalic anhydride. After the lower end of the funnel-shaped piston 33 is pressed against the sealing ring 128, the sealing ring 128 is sealed, and the discharge valve is quickly closed;

[0062] When it is necessary to close the discharge valve to replace the filter screen and the piston in the valve, the electric telescopic rod 16 is controlled to extend upward, thereby driving the lifting rod 13 to move up until the slider 22 is blocked by the top of the slide groove 19. At this time, the lifting rod 13 reaches the highest point. At this time, the circular plate 24 and the sealing ring 26 are tightly pressed up and down, and the annular sealing gasket 23 is plugged in the sealing ring 26 for sealing. The sealing ring 26 and the annular sealing gasket 23 are also made of polytetrafluoroethylene (PTFE). At the same time, the bottom surface of the circular plate 24 is flush with the bottom surface of the connecting flange 13, which does not affect the translation of the splicing ring 29. The diameter of the circular plate 24 is larger than the inner diameter of the sealing ring 26, so as to achieve the effect of quickly closing the discharge valve and complete the preparation work for replacing the filter screen and the piston in the valve, and the product no longer enters the intermediate component;

[0063] After completing the preparation work for replacing the filter screen and the piston in the valve, the operator can rotate the rotating rod 20 through the rotating disk 21 to raise and lower the rotating rod 20. During the rotation of the rotating rod 20, when the funnel-shaped piston 33 is against the filtered material, the bottom of the rotating rod 20 can be separated from the connecting seat 32 by continuing to rotate the rod 20. When the bottom of the rotating rod 20 is flush with the bottom of the circular plate 24, the operator can move the intermediate component. During the movement, the slide bar 35 slides along the slide rail 27 until the intermediate component is moved out. At this time, the upper and lower positions can be misaligned to separate the plug rod and the slot on the card seat 31 and the card slot 34 from each other, thereby completing the separation of the two splicing rings 29. At this time, the ring body 1 39 between the limit ring 2 37 and the limit ring 1 40 loses the restriction of the limit ring, and the filter screen, splicing ring 29, the connecting seat 32 and the funnel-shaped piston 33 can be removed separately for cleaning and replacement, without the need to clean and replace on the valve body, thereby improving convenience.

[0064] A fluororubber layer is fixedly attached to the annular side wall of the connecting seat 32. The fluororubber layer on the connecting seat 32 provides friction, so that when the connecting seat 32 and the second ring body 38 are sleeved together, the connecting seat 32 will not fall directly after being separated from the bottom of the rotating rod 20. After cleaning and replacing the parts, the connecting seat 32 can be directly inserted into the second ring body 38 and the second ring body 38 can be pressed against the funnel-shaped piston 33 to re-combine the two splicing rings 29. The rotating rod 20 can be reversed to re-thread the connecting seat 32, which is convenient for resetting.

[0065] By the rotation connection between the connecting frame 9 and the base 8, the protective cover 1 can be deflected to complete the exposure and shielding of the parts on the material pipe 2. Figure 1 As shown, at this time, by installing locks on the connecting pin 1 7 and the connecting pin 2 10, the protection of the entire device can be completed to prevent others from misoperating. A wire groove can be opened on the protective cover 1 for connecting the electric telescopic rod 16. Figure 1 When the two splicing rings 29 are spliced ​​together, the circular plate 24 is not flush with the bottom surface of the connecting flange 3. At this time, the end of the expansion frame 25 connected to the circular plate 24 is in contact with the inner wall of the splicing ring 29. Figure 2 As shown, the two splicing rings 29 are limited by the insertion rod and the slot in the vertical direction and blocked by the unfolding frame 25 in the horizontal direction, so as to achieve the effect of automatically limiting the intermediate component. The intermediate component can be automatically limited without operation, which further improves the convenience of operation and achieves the effect of fast operation. The operator cannot disassemble the intermediate component without opening the protective cover 1.

[0066] The slider 22 slides along the slide groove 19, and while defining the highest point and the lowest point of the vertical lifting of the lifting rod 13, it also limits the lifting rod 13 from horizontal deflection.

[0067] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride, comprising a discharge valve material pipe 1 (2) and a discharge valve material pipe 2 (5), the adjacent ends of the material pipe 1 (2) and the material pipe 2 (5) are respectively fixedly connected with a connection flange 1 (3) and a connection flange 2 (4), and three connection columns (42) are fixedly connected between the connection flange 1 (3) and the connection flange 2 (4), characterized in that: A detachable intermediate component is provided between the material pipe 1 (2) and the material pipe 2 (5), a lifting component is movably sleeved on the material pipe 1 (2), and a protective component is installed on the outer wall of the material pipe 1 (2); The outer wall of the material pipe (2) is fixedly connected with a mounting seat (17) and a connecting pin (7) with a locking hole, and the connecting flange (3) is fixedly connected with two bases (8) with holes; The intermediate component comprises a funnel-shaped piston (33), a connecting seat (32) and two semicircular splicing rings (29); The lifting assembly comprises a lifting rod (13) and a rotating rod (20); The protection assembly comprises a baffle (6), a protection cover (1) and two connecting frames (9).

2. A quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride as claimed in claim 1, characterized in that: Two sliders (22) are fixedly connected to the upper end of the lifting rod (13), a circular plate (24) is fixedly connected to the bottom of the lifting rod (13), a rod groove (41) is provided in the middle part of the structure composed of the lifting rod (13) and the circular plate (24), an annular sealing gasket (23) is fixedly connected to the upper surface of the circular plate (24), and a group of annular array unfolding frames (25) are fixedly connected to the annular side surface of the circular plate (24); The upper ends of the rotating rod (20) and the rod groove (41) are both threaded sections, the rotating rod (20) is threadedly sleeved in the rod groove (41), and the top of the rotating rod (20) is fixedly connected with a rotating disk (21).

3. A quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride as claimed in claim 2, characterized in that: Two vertical frames (18) are fixedly connected to the upper surface of the collar (11), and vertical slide grooves (19) are provided on opposite surfaces of the two vertical frames (18). A connecting ring (14) is fixedly connected to the upper ends of the two vertical frames (18), and two sliding blocks (22) are respectively clamped in the two slide grooves (19); An electric telescopic rod (16) is fixedly mounted on the mounting seat (17), the end of the electric telescopic rod (16) is fixedly connected to a short frame (15), and the end of the short frame (15) is fixedly connected to the side wall of the upper end of the lifting rod (13).

4. A quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride as claimed in claim 3, characterized in that: The lower ends of the two connecting frames (9) are rotatably connected to the two bases (8) respectively, the upper ends of the two connecting frames (9) are fixedly connected to the bottom of the protective cover (1), and a connecting pin (10) with a hole is fixedly connected to the connecting frame (9) at the front end; Wherein, the baffle (6) is fixedly mounted on the outer wall of the material pipe (2).

5. A quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride as claimed in claim 4, characterized in that: The upper end of the inner wall of the structure composed of the material pipe 2 (5) and the connecting flange 2 (4) is fixedly connected with an annular sealing ring 1 (28), the upper surface of the connecting flange 2 (4) is fixedly connected with a U-shaped retaining bar (12), and the inner wall of the retaining bar (12) is provided with a U-shaped slide rail (27).

6. A quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride as claimed in claim 5, characterized in that: The lower end of the inner wall of the structure composed of the material pipe 1 (2) and the connecting flange 1 (3) is fixedly connected with a sealing ring 2 (26), and the bottom surface of the sealing ring 2 (26) is higher than the bottom surface of the connecting flange 1 (3); The height difference between the bottom surface of the sealing ring 2 (26) and the bottom surface of the connecting flange 1 (3) is equal to the thickness of the circular plate (24).

7. A quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride as claimed in claim 6, characterized in that: The inner walls of the two splicing rings (29) are respectively fixedly connected to the limiting ring 1 (40) and the limiting ring 2 (37), and the ring body 1 (39) and the ring body 2 (38) are movably placed in the complete circular ring formed by the two splicing rings (29); Wherein, an annular filter screen is fixedly connected between the inner ring surface of the first ring body (39) and the outer ring surface of the second ring body (38).

8. A quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride as claimed in claim 7, characterized in that: The second ring body (38) is movably sleeved with the connecting seat (32), the diameter of the connecting seat (32) is equal to the diameter of the lifting rod (13), a thread groove is provided on the upper surface of the connecting seat (32), and the bottom of the connecting seat (32) is fixedly connected to the funnel-shaped piston (33).

9. A quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride as claimed in claim 8, characterized in that: The outer walls of the two splicing rings (29) are respectively fixedly connected with a semicircular rod 1 (30) and a semicircular rod 2 (36); both ends of the semicircular rod 1 (30) are fixedly connected with a clamping seat (31); both ends of the semicircular rod 2 (36) are provided with a clamping groove (34); and both ends of the semicircular rod 2 (36) are also fixedly connected with a sliding strip (35); Wherein, the two card seats (31) are both fixedly connected with an insertion rod, the tops of the two card slots (34) are both provided with slots, the two insertion rods are respectively inserted into the two slots, and the two card seats (31) are respectively inserted into the two card slots (34).

10. A quick discharge valve structure for preparing modified methyl hexahydrophthalic anhydride as claimed in claim 9, characterized in that: The bottom of the rotating rod (20) is a threaded section, and the connecting seat (32) is threadedly sleeved with the lower end of the rotating rod (20) through a threaded groove on the upper surface.

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