Anti-splashing auxiliary material injection device

Abstract

The utility model relates to an anti-splashing auxiliary material injection device which comprises an injection valve, a sealing assembly, an isolating valve, an injection pipe and a fixing assembly, the injection valve, the sealing assembly and the isolating valve are sequentially arranged from top to bottom, the injection valve is arranged at one end of the injection pipe, and the other end of the injection pipe is used for sequentially penetrating through the sealing assembly and the isolating valve to enter a reactor; the fixing assembly is connected with the injection pipe and used for fixing the injection pipe; the sealing assembly comprises a stuffing box and a flexible stuffing part, a channel allowing the other end of the injection pipe to penetrate through is formed in the middle of the stuffing box, the flexible stuffing part is arranged in the channel and is annular, and the outer wall of the injection pipe makes contact with the flexible stuffing part; the isolating valve is arranged on the reactor, is connected with the stuffing box and is used for controlling connection and disconnection between the reactor and the injection pipe. According to the anti-splashing auxiliary material injection device provided by the utility model, a high-temperature medium is prevented from splashing outwards, the height of the injection pipe inserted into the reactor can be set, and the injection pipe can be taken out and quickly replaced.

Description

Technical Field

[0001] This utility model relates to an anti-splashing auxiliary material injection device. Background Technology

[0002] Continuous polyester fiber production units are widely used in conventional production operations, with the most common being five-reactor polymerization units. These polymerization reactors are typically operated under slightly positive or negative pressure. Currently, these polymerization units require the addition of various raw and auxiliary materials to the reactors. These materials are injected into the reactor through nozzles (feeding pipes). Specifically, one end of the nozzle extends into the reactor, while the other end is located outside the reactor and connected to the raw and auxiliary material supply source. The raw and auxiliary material supply source feeds the materials to the nozzles. The problem is that…

[0003] 1. Since the reactor is a continuous production device, it must be added during the production process. And because the reactor is in a high temperature and slightly positive pressure state, the raw materials and auxiliary materials can only be injected continuously. If the raw materials and auxiliary materials are interrupted, the material in the reactor will flow back into the nozzle, solidify and block the nozzle, making it impossible to inject the auxiliary materials into the reactor again, that is, it is impossible to inject intermittently.

[0004] 2. In order to ensure that the injected raw and auxiliary materials are evenly mixed with the materials in the reactor, the depth of the nozzle in the reactor needs to be adjusted. When the height is adjusted or the nozzle that is blocked and cannot be used is pulled out, the high-temperature medium in the reactor will splash out, which can easily burn the operator, posing a significant safety hazard and poor operational flexibility. Utility Model Content

[0005] The purpose of this invention is to provide an anti-splashing auxiliary material injection device that enables online replacement of the injection pipe to prevent material splashing inside the reactor.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A splash-proof auxiliary material injection device includes an injection valve, a sealing assembly, a shut-off valve, an injection pipe, and a fixing assembly. The injection valve, sealing assembly, and shut-off valve are arranged sequentially from top to bottom. The injection valve is located at one end of the injection pipe, and the other end of the injection pipe is used to pass through the sealing assembly and the shut-off valve in sequence to enter the reactor.

[0008] The fixing component is connected to the injection tube, and the fixing component is used to fix the injection tube.

[0009] The sealing assembly includes a stuffing box and a flexible packing section. The stuffing box has a channel in the middle for the other end of the injection tube to pass through. The flexible packing section is disposed in the channel and is annular. The outer wall of the injection tube is in contact with the inner wall of the flexible packing section.

[0010] The isolation valve is installed on the reactor and connected to the stuffing box. The isolation valve is used to control the connection and disconnection between the reactor and the injection pipe.

[0011] According to some embodiments of this utility model, the flexible packing part is a graphite packing.

[0012] According to some embodiments of this utility model, a fixing part is provided in the channel of the stuffing box, the fixing part is annular, and the flexible packing part is disposed on the fixing part.

[0013] According to some embodiments of the present invention, the device further includes a first flange and a second flange, both of which are disposed outside the injection pipe, and the first flange is connected to the injection valve.

[0014] The fixing component is located above the sealing component. The fixing component includes a connecting pipe, a connecting flange, and a packing gland. The connecting pipe has a channel through which the injection pipe passes. The connecting flange and the packing gland are respectively located at opposite ends of the connecting pipe. The connecting flange is used to connect with the second flange, and the packing gland is used to connect with the stuffing box.

[0015] According to some embodiments of this utility model, the packing gland includes a cover body and a pressing section. The pressing section is disposed at the end of the cover body away from the connecting flange. The diameter of the pressing section is smaller than the diameter of the connecting pipe. The pressing section is used to abut against the flexible packing portion.

[0016] According to some embodiments of the present invention, the fixing component is detachably connected to the stuffing box, and / or the stuffing box is detachably connected to the isolation valve.

[0017] According to some embodiments of this utility model, the packing gland and the packing gland are provided with corresponding mounting holes at their upper ends, and the packing gland and the packing gland are connected by placing fasteners in the mounting holes.

[0018] According to some embodiments of this utility model, the lower end of the stuffing box is provided with a corresponding mounting hole for the isolation valve, and the stuffing box is connected to the isolation valve by placing fasteners in the mounting holes.

[0019] According to some embodiments of this utility model, the fastener is a bolt and nut assembly.

[0020] According to some embodiments of this utility model, a sealing gasket is provided between the stuffing box and the isolation valve.

[0021] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0022] The anti-splash auxiliary material injection device provided by this utility model has an injection pipe that enters the reactor and extends out of the reactor. The high-temperature medium inside the reactor will be blocked by the sealing component to prevent the high-temperature medium from splashing outward, eliminating safety hazards and preventing accidents. The injection pipe can be moved according to production needs to set the height of the injection pipe inserted into the reactor. The injection pipe can be removed and replaced quickly, conveniently, and with high safety. Attached Figure Description

[0023] Appendix Figure 1 A structural diagram of the anti-splashing auxiliary material injection device provided by this utility model with the isolation valve in the open state;

[0024] Appendix Figure 2 For the appendix Figure 1 Enlarged view of the fixed components, sealing components, and isolation valve;

[0025] Appendix Figure 3 A structural diagram of the anti-splashing auxiliary material injection device provided by this utility model with the isolation valve in the closed state;

[0026] Appendix Figure 4 For the appendix Figure 3 Enlarged view of the fixed components, sealing components, and isolation valve;

[0027] Appendix Figure 5 Exploded view of the fixing component, sealing component, and isolation valve of the anti-splashing auxiliary material injection device provided by this utility model;

[0028] Appendix Figure 6 A structural diagram of the assembled fixing component, sealing component, and isolation valve of the anti-splashing auxiliary material injection device provided by this utility model;

[0029] Appendix Figure 7 A structural diagram showing that the other end of the injection pipe of the anti-splashing auxiliary material injection device provided by this utility model extends into the reactor;

[0030] Appendix Figure 8 For the appendix Figure 7 Enlarged view of the injection pipe, fixing components, sealing components, and isolation valve.

[0031] In the attached diagrams above:

[0032] 1-Injection pipe; 2-Connecting pipe; 3-Stuffing gland; 31-Gland body; 32-Pressure section; 4-Flexible packing section; 5-Stuffing box; 6-Isolation valve; 61-Valve body; 62-Valve core; 7-Injection valve; 8-Fixing part; 9-Sealing gasket; 10-Connecting flange; 11-First flange; 12-Second flange; 13-Reactor; 14-Fastener. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] See Figures 1 to 8 The splash-proof auxiliary material injection device shown includes an injection valve 7, a fixing assembly, a sealing assembly, an isolation valve 6, and an injection pipe 1, wherein:

[0036] The injection valve 7, the fixing component, the sealing component, and the isolation valve 6 are all located above the reactor 13. The injection valve 7, the fixing component, the sealing component, and the isolation valve 6 are arranged in sequence from top to bottom. The injection valve 7 is used to control the opening and closing of the injection pipe 1. The injection valve 7 is located at one end of the injection pipe 1. The other end of the injection pipe 1 is used to extend into the reactor 13 from the inlet of the fixing component, the sealing component, the isolation valve 6, and the reactor 13. When the injection valve 7 is opened, the auxiliary material enters the reactor 13 through the injection pipe 1. In this example, the reactor 13 is a micro-positive pressure reactor 13, and the center line of the injection pipe 1 is perpendicular to the center line of the reactor 13.

[0037] The device also includes a first flange 11 and a second flange 12, both of which are located outside the injection pipe 1. The first flange 11 is used to connect to the injection valve 7.

[0038] In this example, the fixing component is connected to the injection pipe 1 and the sealing component. The fixing component is used to fix the injection pipe 1 to prevent it from shaking when conveying auxiliary materials and to ensure the stability of conveying auxiliary materials.

[0039] See Figure 1-6The sealing assembly includes a stuffing box 5 and a flexible packing section 4. The stuffing box 5 has a channel in its middle for the other end of the injection pipe 1 to pass through. The flexible packing section 4 is disposed within the channel and is annular. When the injection pipe 1 passes through the channel of the stuffing box 5, the outer peripheral wall of the injection pipe 1 contacts the inner wall of the flexible packing section 4, meaning there is no gap between the outer periphery of the injection pipe 1 and the flexible packing section 4. When material is injected into the reactor 13 through the injection pipe 1, or when the injection pipe 1 is detached from the reactor 13, the material (high-temperature medium) inside the reactor 13 is blocked by the sealing assembly (flexible packing section), thereby preventing outward splashing.

[0040] In some embodiments, the flexible packing part 4 is a graphite packing with a size of 8*8.

[0041] In some embodiments, a fixing part 8 is provided in the channel of the stuffing box 5. The fixing part 8 is annular, and the flexible packing part 4 is disposed on the fixing part 8. The fixing part 8 serves to fix and support the flexible packing part 4.

[0042] In some embodiments, the stuffing box 5 includes an upper section, a middle section and a lower section connected in sequence. The diameters of the upper section and the lower section are both larger than the diameter of the middle section. The flexible stuffing part 4 is located in the channel of the middle section, and the fixing part 8 is disposed in part of the channel of the middle section and the channel of the lower section.

[0043] In one embodiment, see Figure 1-6 The fixing assembly includes a connecting pipe 2, a connecting flange 10, and a packing gland 3. The connecting pipe 2 has a channel through which the injection pipe 1 passes. The connecting flange 10 and the packing gland 3 are respectively located at opposite ends of the connecting pipe 2. The connecting flange 10 is used to connect with the second flange 12, and the packing gland 3 is used to connect with the stuffing box 5. The lower end of the packing gland 3 abuts against the flexible packing part 4, which makes the sealing performance of the sealing assembly better.

[0044] See Figure 5 The packing gland 3 includes a cover body 31 and a pressing section 32. The pressing section 32 is located at the end of the cover body 31 away from the connecting flange 10. The diameter of the pressing section 32 is smaller than the diameter of the connecting pipe 2 (the inner diameter of the pressing section 32 is smaller than the inner diameter of the connecting pipe 2, and the outer diameter of the pressing section 32 is smaller than the outer diameter of the connecting pipe 2). The pressing section 32 extends away from the upper end of the cover body 31. The pressing section 32 is used to abut against the flexible packing part 4 in the channel that extends into the stuffing box 5, compressing the flexible packing part 4. The flexible packing part 4 fits tightly against the outer peripheral wall of the injection pipe 1, resulting in better sealing performance.

[0045] In this example, the isolation valve 6 is connected to the stuffing box 5. The isolation valve 6 is installed on the reactor 13 at the inlet location. The isolation valve 6 is used to control the connection between the reactor 13 and the injection pipe 1. The isolation valve 6 includes a valve body 61 and a valve core 62. A flow channel is provided in the middle of the valve body 61, and a through hole is provided on the valve core 62. The isolation valve 6 has an open state and a closed state. When it is in the open state, the through hole of the valve core 62 is aligned with and connected to the center line of the flow channel of the valve body 61. The other end of the injection pipe 1 passes through the flow channel of the valve body 61 and the through hole of the valve core 62 and enters the reactor 13. The auxiliary material enters the reactor 13 through the injection pipe 1. When it is in the closed state, the through hole of the valve core 62 is not aligned with and connected to the center line of the flow channel of the valve body 61. The other end of the injection pipe 1 extends out of the through hole of the valve core 62 (the injection pipe 1 is located above the valve core 62).

[0046] In this example, when the other end of the injection pipe 1 is inside the reactor 13, it is necessary to disconnect the injection pipe 1 from the reactor 13. The specific operation is as follows: at this time, the isolation valve 6 is in the open state. First, separate the second flange 12 from the connecting flange 10, and then move the injection pipe 1 upward until the other end of the injection pipe 1 extends out of the through hole of the valve core. Close the isolation valve 6. During this process, a small amount of material in the reactor 13 will be sprayed out. Due to the sealing component, the material is blocked by the flexible packing part 4 of the sealing component and will not splash to the outside, and the injection pipe will be prevented from being blocked.

[0047] In a preferred embodiment, the fixing component is detachably connected to the stuffing box 5, and the stuffing box 5 is detachably connected to the isolation valve 6.

[0048] See Figure 1-6 The fixing component and the stuffing box 5 are detachably connected as follows: the stuffing gland 3 and the stuffing box 5 have corresponding mounting holes at their upper ends. Fasteners 14 are installed in these mounting holes to connect the stuffing gland 3 and the stuffing box 5, facilitating the installation and removal of the fixing component and the stuffing box 5. Slightly tightening the fasteners 14 on the stuffing gland 3 and the stuffing box 5 ensures a plastic seal in the packing, achieving a better sealing effect.

[0049] See Figure 1-6 The packing gland 5 and the isolation valve 6 are detachably connected in the following way: the lower end of the packing gland 5 and the isolation valve 6 are provided with corresponding mounting holes. Fasteners are installed in the mounting holes to connect the packing gland 5 and the isolation valve 6, which facilitates the installation and disassembly of the packing gland 5 and the isolation valve 6 and makes the operation convenient.

[0050] In some implementations, the fastener is a bolt and nut assembly.

[0051] In some embodiments, a sealing gasket 9 is provided between the stuffing box 5 and the isolation valve 6 to improve the connection sealing.

[0052] The specific implementation method for removing the injection pipe 1 in this example of the anti-splash auxiliary material injection device is as follows: If the injection of auxiliary material medium in the reactor is interrupted, causing the injection pipe 1 to become blocked, the injection pipe 1 can be slowly raised until the other end of the injection pipe 1 extends out of the through hole of the valve core, and then the isolation valve 6 is closed to block the reactor 13 from the outside. Then the injection pipe 1 is pulled out and cleaned and unblocked; or the injection pipe 1 can be replaced. This method is quick, convenient and safe.

[0053] In this example, when the injection pipe 1 is inserted into reactor 13 and then removed from reactor 13, the injection valve 7 is closed.

[0054] The advantages of the anti-splashing auxiliary material injection device in this example are:

[0055] 1. The other end of the injection pipe 1 passes through the sealing assembly and the isolation valve 6 in sequence and enters the reactor 13. The high-temperature medium in the reactor 13 will be blocked by the sealing assembly to prevent the high-temperature medium from splashing outward, eliminate safety hazards, and avoid accidents.

[0056] 2. The height of the injection pipe 1 inserted into the reactor 13 can be set by moving the injection pipe 1 according to production needs. The specific operation is as follows: first loosen the fasteners on the second flange 12 to separate the injection pipe 1 from the fixed component, then move the injection pipe 1 to the appropriate position, and then fix the second flange 12 to the connecting flange 10.

[0057] 3. The injection tube 1 can be removed and replaced quickly and easily without risk; the structure is simple and easy to install; there is no energy consumption and no additional maintenance costs; the effect is good, cleaning is convenient, and maintenance is simple.

[0058] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A splash-proof auxiliary material injection device, characterized in that, It includes an injection valve, a sealing assembly, a shut-off valve, an injection pipe, and a fixing assembly. The injection valve, sealing assembly, and shut-off valve are arranged sequentially from top to bottom. The injection valve is located at one end of the injection pipe, and the other end of the injection pipe is used to pass through the sealing assembly and the shut-off valve in sequence to enter the reactor. The fixing component is connected to the injection tube, and the fixing component is used to fix the injection tube. The sealing assembly includes a stuffing box and a flexible packing section. The stuffing box has a channel in the middle for the other end of the injection tube to pass through. The flexible packing section is disposed in the channel and is annular. The outer wall of the injection tube is in contact with the inner wall of the flexible packing section. The isolation valve is installed on the reactor and connected to the stuffing box. The isolation valve is used to control the connection and disconnection between the reactor and the injection pipe.

2. The anti-splashing auxiliary material injection device according to claim 1, characterized in that, The flexible packing part is graphite packing.

3. The anti-splashing auxiliary material injection device according to claim 1, characterized in that, The stuffing box has a fixing part inside its channel, the fixing part being annular, and the flexible packing part being disposed on the fixing part.

4. The anti-splashing auxiliary material injection device according to claim 1, characterized in that, The device further includes a first flange and a second flange, both of which are disposed outside the injection pipe, and the first flange is connected to the injection valve; The fixing component is located above the sealing component. The fixing component includes a connecting pipe, a connecting flange, and a packing gland. The connecting pipe has a channel through which the injection pipe passes. The connecting flange and the packing gland are respectively located at opposite ends of the connecting pipe. The connecting flange is used to connect with the second flange, and the packing gland is used to connect with the stuffing box.

5. The anti-splashing auxiliary material injection device according to claim 4, characterized in that, The packing gland includes a cover body and a pressing section. The pressing section is located at the end of the cover body away from the connecting flange and is used to press against the flexible packing section.

6. The anti-splashing auxiliary material injection device according to claim 1, characterized in that, The fixing component is detachably connected to the stuffing box, and / or the stuffing box is detachably connected to the isolation valve.

7. The anti-splashing auxiliary material injection device according to claim 6, characterized in that, The packing gland and the stuffing box have corresponding mounting holes at their upper ends. Fasteners are placed in the mounting holes to connect the packing gland and the stuffing box.

8. The anti-splashing auxiliary material injection device according to claim 6, characterized in that, The lower end of the stuffing box has a corresponding mounting hole with the isolation valve. The stuffing box is connected to the isolation valve by placing fasteners in the mounting holes.

9. The anti-splashing auxiliary material injection device according to claim 7 or 8, characterized in that, The fasteners mentioned are bolt and nut assemblies.

10. The anti-splashing auxiliary material injection device according to claim 1, characterized in that, A sealing gasket is provided between the stuffing box and the isolation valve.

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