A sampling device for carbon fiber precursor solution

Abstract

The application provides a sampling device suitable for carbon fiber precursor solution, which comprises a sampling container, a medium cavity is arranged in the sampling container, a liquid inlet communicating inside and outside of the medium cavity is arranged on the sampling container, and relatively arranged clamping members are arranged, which are adapted to move by approaching and moving away from each other. The sampling device suitable for carbon fiber precursor solution, the clamping members approaching each other can position the sampling container, move the sampling container inside and outside the sampling area to complete the sampling work, and the clamping members cooperate with the sealing structure to block the medium possibly entering between the inner sleeve and the extruding member during the sampling process of the sampling container, avoid damaging the device, and ensure that the sampling device suitable for carbon fiber precursor solution and the sampling container can be safely and reliably separated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of carbon fiber precursor solution sampling, and particularly to a sampling device suitable for carbon fiber precursor solution. BACKGROUND

[0002] In the chemical industry, it is inevitable to encounter the scene of sampling a medium with high temperature and corrosive, that is, taking some samples from the medium after high-temperature dissolution and reaction for detection, such as sampling of carbon fiber precursor solution.

[0003] The existing sampling device has the following defects in the application process:

[0004] The prior art grasps the sampling container through the clamping structure, and places the sampling container in the medium to complete the sampling work of the sampling container on the medium, wherein there is a gap between the components of the clamping structure, and the corrosive medium is easy to penetrate into the gap during sampling, causing damage to the clamping structure and resulting in poor safety and reliability of the device.

[0005] In order to solve the above problems, the present application provides a safe and reliable sampling device suitable for carbon fiber precursor solution. SUMMARY

[0006] In order to solve the above problems of the existing sampling device, the present application provides a sampling device suitable for carbon fiber precursor solution.

[0007] According to one object of the present application, the present application provides a sampling device suitable for carbon fiber precursor solution, comprising a sampling container, a medium cavity is arranged in the sampling container, a liquid inlet communicating inside and outside of the medium cavity is arranged on the sampling container, and further comprising:

[0008] Oppositely arranged clamping pieces, the clamping pieces are arranged to be adapted to move by approaching and moving away from each other, wherein the clamping pieces are adapted to connect the sampling container when approaching each other, and the clamping pieces are adapted to separate the sampling container when moving away from each other;

[0009] An inner sleeve, the inner sleeve is provided with an exposure port for the clamping pieces to enter and exit, the inner side of the inner sleeve matches the side opposite to the clamping pieces, wherein the inner side of the inner sleeve radially constrains the clamping pieces approaching each other, the inner sleeve is provided with an extrusion piece moving radially inside and outside of the inner sleeve, the extrusion piece is adapted to constrain the clamping pieces approaching each other in the axial direction of the inner sleeve, and a sealing structure is arranged between the extrusion piece and the inner sleeve;

[0010] The sampling device has at least two working states, i.e. a connected state and a disconnected state. When the sampling device is in the connected state, the clamping members are close to each other and enter the inside of the inner sleeve through the exposure opening, the inside of the inner sleeve restrains the clamping members, the extruding member moves towards the inside of the inner sleeve and restrains the clamping members, wherein the clamping members close the exposure opening, and the sealing structure is adapted to block the medium from entering between the extruding member and the inner sleeve; when the sampling device is in the disconnected state, the extruding member moves towards the outside of the inner sleeve and is disconnected from the clamping members, and the clamping members can be disconnected from the inside of the extruding member through the exposure opening.

[0011] Preferably, a disconnection elastic member is arranged between the inner sleeve and the extruding member, and the disconnection elastic member is arranged along the axial direction of the inner sleeve; when the sampling device is in the connected state, the extruding member and the inner sleeve compress the disconnection elastic member in the axial direction; when the sampling device is in the disconnected state, the disconnection elastic member releases and pushes the clamping members outwards of the inner sleeve.

[0012] Preferably, a restraint member is further arranged between the clamping members and the disconnection elastic member, the restraint member is movably arranged on the side of the clamping members away from the sampling container, the restraint member is adapted to restrain the sampling container close to each other, and the restraint member is slidably connected to the inside of the inner sleeve in the axial direction of the inner sleeve.

[0013] Preferably, the clamping members include oppositely arranged first and second clamping members, the middle part of the first and second clamping members in the length direction is provided with a support plate, at least one of the clamping members and the support plate is movably connected, the clamping member is divided into a clamping part and a connecting part by the support plate, the clamping part corresponds to the sampling container, the connecting part corresponds to the inside of the inner sleeve, and the support plate closes the end opening of the inner sleeve when the sampling device is in the connected state.

[0014] Preferably, a clamping elastic member is arranged between the clamping members, the clamping elastic member is supported between the opposite extruding members, and the clamping elastic member is adapted to support the clamping members away from each other.

[0015] An arc-shaped extruding groove is formed on the outside of the connecting part, and the extruding member and the extruding groove are connected when the sampling device is in the connected state.

[0016] Preferably, the inner sleeve is provided with an extruding hole in the radial direction, the extruding member is slidably arranged on the inside of the extruding hole, one end of the extruding member close to the inside of the inner sleeve is an inner end, and the other end of the extruding member close to the outside of the inner sleeve is an outer end.

[0017] The inner sleeve is sleeved with an outer sleeve which is adapted to move along the axial direction of the inner sleeve, the inner side of the outer sleeve is matched with the outer end of the extruding piece, when the sampling device is in the connected state, the inner side of the outer sleeve is adapted to extrude the outer end of the extruding piece so that the inner end of the extruding piece extrudes the clamping piece, when the sampling device is in the disconnected state, the inner side of the outer sleeve is away from the outer end of the extruding piece, the extruding piece can move in the extruding hole towards the outer side of the inner sleeve, and the inner end of the extruding piece is disconnected with the clamping piece.

[0018] The sealing structure is located between the inner side of the outer sleeve and the outer side of the inner sleeve, and is located on the side of the extruding piece close to the exposure port.

[0019] Preferably, the inner side of the outer sleeve is provided with a constraint groove towards the side of the sampling container, and an end of the extruding hole close to the inner side of the inner sleeve extends inwardly to form a constraint part, when the sampling device is in the disconnected state, the extruding piece is limited between the constraint groove and the constraint part.

[0020] Preferably, the extruding piece is a spherical extruding piece, the opening of the extruding hole close to the inner side of the inner sleeve is an inner opening, the opening of the extruding hole close to the outer side of the inner sleeve is an outer opening, the inner opening extends inwardly to form the constraint part, the size of the constraint part is smaller than the size of the extruding piece, the size of the outer opening is larger than the size of the extruding piece, and the length of the extruding hole is smaller than the diameter of the extruding piece.

[0021] Preferably, the outer sleeve and the inner sleeve are both made of SUS304 stainless steel, and the outer surfaces of the outer sleeve and the inner sleeve are plated with at least one layer of nickel, and the sealing structure is a graphite sealing ring.

[0022] Preferably, the inner side of the outer sleeve is provided with a limiting groove, the outer side of the inner sleeve extends outwardly to have a protrusion, the protrusion and the limiting groove are in sliding connection, and the limiting groove restricts the protrusion in the circumferential direction of the outer sleeve.

[0023] When the sampling device is in the connected state and the disconnected state, one end of the limiting groove in the length direction abuts against the protrusion.

[0024] Compared with the prior art, the present application has the following beneficial effects:

[0025] The sampling device suitable for carbon fiber precursor solution, the clamping pieces close to each other can position the sampling container, so that the sampling container moves in and out of the sampling area to complete the sampling work. During the sampling process of the sampling container, the clamping piece cooperates with the sealing structure to block the medium that may enter between the inner sleeve and the extrusion piece, avoiding damage to the device, and ensuring that the sampling device and the sampling container can be safely and reliably disassembled.

[0026] Wherein by adjusting the position of the extrusion piece on the inner sleeve, the switching between the connected state and the disconnected state of the sampling device can be realized, and then the convenient disassembly between the sampling container and the clamping piece is realized, which is convenient for operation.

[0027] The application is further illustrated below in combination with the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The connection state diagram of the sampling device suitable for carbon fiber precursor solution is shown in the application.

[0029] Figure 2 The disconnection state diagram of the sampling device suitable for carbon fiber precursor solution is shown in the application.

[0030] Figure 3 The clamping piece diagram of the sampling device suitable for carbon fiber precursor solution is shown in the application.

[0031] Figure 4 The constraint piece diagram of the sampling device suitable for carbon fiber precursor solution is shown in the application.

[0032] Figure 5 The inner sleeve diagram of the sampling device suitable for carbon fiber precursor solution is shown in the application.

[0033] Figure 6 The inner sleeve diagram of the sampling device suitable for carbon fiber precursor solution is shown in the application.

[0034] Figure 7 The outer sleeve diagram of the sampling device suitable for carbon fiber precursor solution is shown in the application.

[0035] Figure 8 The outer sleeve diagram of the sampling device suitable for carbon fiber precursor solution is shown in the application.

[0036] Figure 9 The sampling diagram of the sampling device suitable for carbon fiber precursor solution in the reaction kettle is shown in the application. DETAILED DESCRIPTION

[0037] The following description is provided to enable any person skilled in the art to practice the application as claimed. Various modifications to the preferred embodiment announced in the following description will be readily apparent to those of ordinary skill in the art, and the generic principles defined herein can be applied to other embodiments without the use of the inventive faculty. The present application is defined not with reference to the above description but with reference to the claims annexed hereto and for the most part corresponding provisions in other patent documents.

[0038] Referring to Figures 1-2 The present application provides a technical solution: a sampling device suitable for carbon fiber precursor solution, comprising:

[0039] A sampling container 100 is provided with a medium cavity 101 inside, and a liquid inlet 102 is provided on the sampling container 100 to communicate the inside and outside of the medium cavity 101, characterized in that it further comprises:

[0040] Oppositely arranged clamping pieces 200 are provided to be suitable for being connected to the sampling container 100 by moving closer and farther away from each other, and the clamping pieces 200 are suitable for being connected to the sampling container 100 when they move closer to each other, and the clamping pieces 200 are suitable for being separated from the sampling container 100 when they move farther away from each other;

[0041] An inner sleeve 300 is provided with an exposure port 301 for the clamping pieces 200 to enter and exit, and the inner side of the inner sleeve 300 matches the side opposite to the clamping pieces 200, wherein the inner side of the inner sleeve 300 radially restricts the clamping pieces 200 from moving closer to each other, and the inner sleeve 300 is provided with a pressing piece 400 that moves radially inside and outside the inner sleeve 300, and the pressing piece 400 is suitable for restricting the clamping pieces 200 from moving closer to each other in the axial direction of the inner sleeve 300, and a sealing structure 500 is provided between the pressing piece 400 and the inner sleeve 300;

[0042] The sampling device has at least two working states, namely connected state and separated state, when the sampling device is in connected state, the clamping pieces 200 move closer to each other and enter the inner side of the inner sleeve 300 through the exposure port 301, the inner side of the inner sleeve 300 restricts the clamping pieces 200, the pressing piece 400 moves towards the inner side of the inner sleeve 300 and restricts the clamping pieces 200, the clamping pieces 200 close the exposure port 301, and the sealing structure 500 is suitable for blocking the medium from entering between the pressing piece 400 and the inner sleeve 300, when the sampling device is in separated state, the pressing piece 400 moves towards the outer side of the inner sleeve 300 and separates from the clamping pieces 200, and the clamping pieces 200 can separate from the inner side of the pressing piece 400 through the exposure port 301.

[0043] The clamping pieces 200 close to each other in the sampling device suitable for the carbon fiber precursor solution can position the sampling container 100 to move in and out of the sampling area to complete the sampling work. During the sampling process of the sampling container 100, the clamping pieces 200 cooperate with the sealing structure 500 to block the medium that may enter between the inner sleeve 300 and the extrusion piece 400, avoiding damage to the device and ensuring that the sampling device and the sampling container 100 can be safely and reliably disassembled.

[0044] By adjusting the position of the extrusion piece 400 on the inner sleeve 300, the sampling device suitable for the carbon fiber precursor solution can be switched between the connected state and the disconnected state, and the sampling container 100 and the clamping pieces 200 can be conveniently disassembled and assembled.

[0045] Continuing to refer to Figure 1 and 2 , further, the inner sleeve 300 and the extrusion piece 400 are provided with a disconnection elastic piece 600 arranged along the axial direction of the inner sleeve 300. When the sampling device is in the connected state, the extrusion piece 400 and the inner sleeve 300 compress the disconnection elastic piece 600 in the axial direction. When the sampling device is in the disconnected state, the disconnection elastic piece 600 releases and pushes the clamping pieces 200 outwards from the inner side of the inner sleeve 300. By adding the disconnection elastic piece 600, when the sampling device is switched from the connected state to the disconnected state, the disconnection elastic piece 600 can drive the clamping pieces 200 to disconnect from the inner side of the inner sleeve 300, so that the clamping pieces 200 can move away from each other, and then the clamping pieces 200 and the sampling container 100 can be disassembled. Further, referring to Figure 1 , 2 and 4, the clamping pieces 200 and the disconnection elastic piece 600 are further provided with a restraint piece 700 movably sleeved on the side of the clamping pieces 200 away from the sampling container 100. The restraint piece 700 is suitable for restraining the sampling container 100 close to each other, and the restraint piece 700 is slidably connected to the inner side of the inner sleeve 300 in the axial direction of the inner sleeve 300. Specifically, the restraint piece 700 is provided with an inner cavity, and the side of the clamping pieces 200 away from the sampling container 100 can be inserted into the inner cavity of the restraint piece 700. The side wall of the inner cavity of the restraint piece 700 can extrude the clamping pieces 200, so that the clamping pieces 200 are close to each other. Further, the size of the inner cavity of the restraint piece 700 gradually decreases away from the sampling container 100, and the side of the clamping pieces 200 away from each other is fitted to the inner wall of the restraint piece 700.

[0046] Further, referring to Figure 3, the clamping elastic member 204 is supported between the opposite extrusion members 400, the clamping elastic member 204 is adapted to support the clamping members 200 away from each other, when the sampling device is in the connected state, the opposite extrusion members 400 compress the clamping elastic member 204, when the sampling device is in the disengaged state, the clamping elastic member 204 releases and drives the clamping members 200 away from each other, thereby realizing the disassembly between the clamping members 200 and the sampling container 100.

[0047] Optionally, the clamping elastic member 204 and the disengaging elastic member 600 are springs.

[0048] Continuing to refer to Figure 3 , the clamping member 200 includes oppositely arranged first clamping member 201 and second clamping member 202, the middle part of the first clamping member 201 and the second clamping member 202 in the length direction is provided with a support plate 203, at least one clamping member 200 and the support plate 203 are movably connected, the clamping elastic member 204 is arranged between the first clamping member 201 and the second clamping member 202, the clamping member 200 is divided into clamping part 200a and connecting part 200b by the support plate 203, the clamping part 200a corresponds to the sampling container 100, when the sampling device is in the connected state, the clamping part 200a is exposed to the outside of the inner sleeve 300, the connecting part 200b corresponds to the inside of the inner sleeve 300, when the sampling device is in the connected state, the support plate 203 closes the end opening of the inner sleeve 300. Further, the outer side of the connecting part 200b is provided with an arc-shaped extrusion groove 205, when the sampling device is in the connected state, the extrusion member 400 and the extrusion groove 205 are clamped, further, the contact surface of the extrusion member 400 corresponding to the extrusion groove 205 is also arc-shaped design, further, the extrusion groove 205 is arranged relative to the supporting direction of the clamping elastic member 204.

[0049] In one of the embodiments, the first clamping piece 201 is fixedly connected with the support plate 203, and the second clamping piece 202 is movably connected with the support plate 203 in a manner of approaching and moving away from the first clamping piece 201, wherein a sliding groove is formed in the support plate 203 for the movement of the second clamping piece 202. In use, the connecting part 200b of the clamping piece 200 is placed on the inner side of the inner sleeve 300, when the pressing groove 205 on the connecting part 200b is aligned with the positioning piece, the clamping piece 200 is pressed by the clamping elastic piece 204 between the first clamping piece 201 and the second clamping piece 202, and the clamping elastic piece 204 is pressed against the clamping piece 200. At this time, the first clamping piece 201 and the second clamping piece 202 are close to each other, the clamping part 200a of the clamping piece 200 clamps the sampling container 100, and at the same time, the clamping piece 200 is fixed by the pressing piece 400 in the axial direction of the inner sleeve 300. Because the pressing groove 205 is designed in an arc shape, a large enough force can also be applied to pull out the clamping piece 200 from the inner sleeve 300. After the clamping piece 200 is pulled out, the clamping elastic piece 204 is released, the clamping piece 200 is opened, and the elastic piece 600 is released.

[0050] Referring to Figure 1 、 2 , 5, 6, 7, 8, regarding the connection structure between the pressing piece 400 and the inner sleeve 300, the inner sleeve 300 is provided with a pressing hole 302 in the radial direction, and the pressing piece 400 is slidably installed on the inner side of the pressing hole 302. The end of the pressing piece 400 close to the inner side of the inner sleeve 300 is the inner end, and the end of the pressing piece 400 close to the outer side of the inner sleeve 300 is the outer end.

[0051] The outer sleeve 800 is sleeved on the outer side of the inner sleeve 300, and is adapted to move along the axial direction of the inner sleeve 300. The inner side of the outer sleeve 800 matches the outer end of the pressing piece 400. When the sampling device is in the connected state, the inner side of the outer sleeve 800 is adapted to press the outer end of the pressing piece 400, so that the inner end of the pressing piece 400 presses the clamping piece 200, thereby restricting the clamping piece 200 in the axial direction of the inner sleeve 300. When the sampling device is in the disconnected state, the inner side of the outer sleeve 800 moves away from the outer end of the pressing piece 400, the pressing piece 400 can move in the pressing hole 302 towards the outer side of the inner sleeve 300, and the inner end of the pressing piece 400 is disconnected from the clamping piece 200.

[0052] The sealing structure 500 is located between the inner side of the outer sleeve 800 and the outer side of the inner sleeve 300, and is located on the side of the pressing piece 400 close to the exposure port 301.

[0053] Further, the inner side of the outer sleeve 800 is provided with a restraint groove 801 facing the sampling container 100, and the extrusion hole 302 is extended inwardly to form a restraint portion 802 at one end of the inner side of the inner sleeve 300, so that the extrusion piece 400 is limited between the restraint groove 801 and the restraint portion 802 when the sampling device is in the disengaged state, thereby avoiding the extrusion piece 400 from being disengaged from the extrusion hole 302.

[0054] Further, the inner end and / or the outer end of the extrusion piece 400 is arc-shaped.

[0055] In one embodiment, referring to Figure 1 and 2 , the extrusion piece 400 is a spherical steel extrusion piece 400, the extrusion hole 302 is an inner opening near the opening of the inner side of the inner sleeve 300, and is an outer opening near the opening of the outer side of the inner sleeve 300, the inner opening is extended inwardly to form the restraint portion 802, the size of the restraint portion 802 is smaller than the size of the extrusion piece 400, the size of the outer opening is larger than the size of the extrusion piece 400, and the length of the extrusion hole 302 is smaller than the diameter of the extrusion piece 400. Thus, when the sampling device for carbon fiber precursor solution is in the connected state, the inner end of the spherical extrusion piece 400 can extend to the inner side of the inner sleeve 300, and when the sampling device for carbon fiber precursor solution is in the disengaged state, the outer end of the extrusion piece 400 can be exposed to the outer side of the inner sleeve 300, so that the outer sleeve 800 can extrude the outer end of the extrusion piece 400.

[0056] Further, the outer sleeve 800 is made of SUS304 stainless steel, and the outer surface of the outer sleeve 800 is plated with a layer of nickel to increase the corrosion resistance.

[0057] Further, the inner sleeve 300 is made of SUS304 stainless steel, and the outer surface of the outer sleeve 800 is plated with a layer of nickel to increase the corrosion resistance.

[0058] Continuing to refer to Figure 1 , 2 , 5, 6, 7, 8, further, the outer sleeve 800 is provided with a limiting groove 803 at one end away from the clamping piece 200 along the axial direction, the outer side of the inner sleeve 300 is extended outwardly with a protrusion 303, the protrusion 303 and the limiting groove 803 are in sliding connection, and the limiting groove 803 restricts the protrusion 303 in the circumferential direction of the outer sleeve 800.

[0059] When the sampling device is in the connected state and the disengaged state, one end of the limiting groove 803 in the length direction abuts against the protrusion 303.

[0060] Further, the protrusion 303 and the limiting groove 803 are in interference connection. When the sampling device for the carbon fiber precursor solution is switched between the connected state and the disconnected state, the protrusion 303 can cooperate with the limiting groove 803 to avoid relative sliding of the outer sleeve 800 and the inner sleeve 300.

[0061] Referring to Figure 1 and 2 Further, in the radial direction, a high-temperature-resistant and corrosion-resistant sealing ring is arranged between the inner sleeve 300 and the outer sleeve 800, the sealing structure 500 is the sealing ring, preferably, the sealing ring is a graphite sealing ring, the sealing ring plays a sealing role to prevent medium from entering the inner sleeve 300 and the outer sleeve 800, and the graphite sealing ring can resist temperatures above 600°C. In one embodiment, the sealing ring is connected to the radial outer side of the inner sleeve 300.

[0062] Referring to Figure 1 、 2 and 3, regarding the specific structure of the sampling container 100 and the connection structure of the clamping piece 200 and the sampling container 100, the sampling container 100 includes a sampling head 104 and a sampling main body 103 connected in sequence in the length direction, the sampling main body 103 is provided with a medium cavity 101, the sampling main body 103 is provided with an opening with internal threads on the side facing the sampling head 104, the sampling head 104 is provided with external threads on the outside, the sampling head 104 is sealingly screwed to the opening, and the sampling main body 103 is provided with a liquid inlet 102 communicating inside and outside the medium cavity 101 on the side close to the opening;

[0063] The side of the sampling head 104 away from the sampling main body 103 is provided with a clamping groove 105, the opposite inner walls of the clamping groove 105 are provided with pin holes, and a pin 106 is installed in the pin holes. The inner wall of the clamping groove 105 and the pin 106 form an annular second connection structure;

[0064] The opposite sides of the clamping part 200a of the first clamping piece 201 and the clamping part 200a of the second clamping piece 202 are provided with connecting grooves, when the first clamping piece 201 and the second clamping piece 202 are close to each other, the connecting grooves on the first clamping piece 201 and the connecting grooves on the second clamping piece 202 form a closed connecting hole 206, the inner wall of the connecting hole 206 forms a first connection structure, and the first connection structure and the second connection structure are mutually buckled.

[0065] Further, the size of the first clamping part 200a and the size of the second clamping part 200a gradually decrease away from the connecting part 200b.

[0066] Further, the first end and the second end of the sampling container 100 are both hemispherical, and the sampling container 100 is in the shape of a "capsule" as a whole. The sampling container 100 is made of SUS304 stainless steel and plated with a layer of nickel on the outer surface to improve the corrosion resistance of the sampling container 100. When the sampling container 100 is put into the dissolved medium through the inner sleeve 300 and the clamping member 200 from above, the dissolved medium enters the medium cavity 101 through the liquid inlet 102, and the capsule-shaped sampling container 100 is convenient to operate.

[0067] Usage:

[0068] If it is necessary to switch the sampling device from the disengaged state to the connected state, first insert the clamping member 200 into the inner side of the constraint member 700, and the constraint member 700 acts on the clamping member 200 to make the clamping member 200 close to each other, and then push the constraint member 700 connected with the clamping member 200 into the inner side of the inner sleeve 300, and the constraint member 700 compresses the disengagement elastic member 600. When the extrusion groove 205 on the clamping member 200 is aligned with the extrusion member 400, pull down the outer sleeve 800, and the outer sleeve 800 acts on the extrusion member 400 to be clamped into the extrusion groove 205, so as to realize the positioning between the clamping member 200 and the inner sleeve 300. At this time, the sampling device for sampling the carbon fiber precursor solution is switched to the connected state, and further insert the clamping part 200a of the clamping member 200 into the clamping groove 105 on the sampling head 104 and pass through the pin 106;

[0069] If it is necessary to switch the sampling device from the connected state to the disengaged state, pull up the outer sleeve 800 on the sampling device in the connected state, and the outer sleeve 800 and the extrusion member 400 are disengaged, the extrusion member 400 releases the positioning of the clamping member 200, the compressed disengagement elastic member 600 resets and pushes the clamping member 200 to the outer side of the inner sleeve 300, the clamping member 200 and the constraint member 700 are separated, the clamping elastic member 204 resets and pushes the clamping member 200 away from each other, and the clamping part 200a of the clamping member 200 forms an opening. At this time, the sampling device is switched to the disengaged state, and the sampling container 100 can be removed from the clamping member 200.

[0070] Further, the side of the inner sleeve 300 away from the clamping member 200 is detachably mounted with a lifting member 900. Further, the side of the inner sleeve 300 away from the clamping member 200 is provided with an internal thread groove, one end of a connecting block with external threads is connected with the internal thread groove, and the other end is connected with an internal thread cap, and the internal thread cap is provided with the lifting member 900. Preferably, the lifting member 900 is a steel wire. Figure 9When in use, the lifting member 900 can hoist the sampling device for carbon fiber precursor solution and the sampling container 100 into the high-temperature dissolving medium for sampling.

[0071] The assembly of the sampling device for carbon fiber precursor solution is divided into the following steps:

[0072] Prepare the corresponding tools and the processed parts in the sampling device.

[0073] S1. Install the extrusion member 400 and the sealing ring on the inner sleeve 300;

[0074] S2. Install the inner sleeve 300 with the installed extrusion member 400 and the sealing ring into the outer sleeve 800, and the protrusion 303 on the inner sleeve 300 corresponds to the limiting groove 803 inside the outer sleeve 800 to ensure that the inner sleeve 300 and the outer sleeve 800 do not slide relative to each other;

[0075] S3. Install the disengagement elastic member 600 into the inner sleeve 300

[0076] S4. Install the constraint member 700 into the inner sleeve 300 and contact the disengagement elastic member 600, and pay attention to the installation direction of the constraint member 700;

[0077] S5. Insert the clamping member 200 into the constraint member 700 and extrude the spring through the constraint member 700 until the clamping member 200 is clamped and fixed by the extrusion member 400, and the clamping members 200 are closed to each other;

[0078] S6. Threadedly connect the inner sleeve 300 to the lifting member 900

[0079] S7. Connect the sampling body 103 and the sampling head 104

[0080] S8. Insert the clamping member 200 into the clamping groove 105 on the sampling container 100, align the pin hole on the sampling container 100 with the clamping area on the clamping member 200, and install the pin 106 for fixation;

[0081] S9. Lower the lifting member 900 to place the sampling container 100 into the high-temperature dissolving medium for sampling.

[0082] In summary, the clamping members 200 that are closed to each other in the sampling device for carbon fiber precursor solution can position the sampling container 100 to move inside and outside the sampling area to complete the sampling work. During the sampling process of the sampling container 100, the clamping members 200 cooperate with the sealing structure 500 to block the medium that may enter between the inner sleeve 300 and the extrusion member 400, avoiding damage to the device and ensuring that the sampling device and the sampling container 100 can be safely and reliably disassembled.

[0083] The switching between the connection state and the disconnection state of the sampling device can be realized by adjusting the position of the extrusion piece 400 on the inner sleeve 300, and the sampling container 100 and the clamping piece 200 can be conveniently disassembled and assembled.

[0084] The above-described embodiments are only used for illustrating the technical ideas and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot be limited to the patent application range of the present application only by the above-described embodiments, that is, any equivalent changes or modifications made according to the disclosed spirit of the present application still fall within the patent scope of the present application.

Claims

1. A sampling device suitable for carbon fiber precursor solution, comprising a sampling container (100), a medium cavity (101) is arranged in the sampling container (100), a liquid inlet (102) is arranged on the sampling container (100) to communicate inside and outside of the medium cavity (101), characterized in that, Also comprising: Oppositely arranged clamping pieces (200) which are arranged to move towards and away from each other, wherein the clamping pieces (200) are adapted to connect the sampling container (100) when moving towards each other, and are adapted to separate the sampling container (100) when moving away from each other; An inner sleeve (300) which is provided with an exposed opening (301) for the clamping pieces (200) to enter, and the inner side of the inner sleeve (300) matches the side of the clamping pieces (200) which is opposite to the side of the clamping pieces (200) that is in contact with the sampling container (100), wherein the inner side of the inner sleeve (300) radially restricts the clamping pieces (200) moving towards each other, and the inner sleeve (300) is provided with a pressing piece (400) which moves radially inwards and outwards of the inner sleeve (300), and the pressing piece (400) is adapted to axially restrict the clamping pieces (200) moving towards each other, and a sealing structure (500) is arranged between the pressing piece (400) and the inner sleeve (300); The sampling device has at least two working states, namely a connected state and a separated state, when the sampling device is in the connected state, the clamping pieces (200) move towards each other and enter the inner side of the inner sleeve (300) through the exposed opening (301), the inner side of the inner sleeve (300) restricts the clamping pieces (200), and the pressing piece (400) moves towards the inner side of the inner sleeve (300) and restricts the clamping pieces (200), wherein the clamping pieces (200) close the exposed opening (301), and the sealing structure (500) is adapted to block the medium from entering between the pressing piece (400) and the inner sleeve (300), when the sampling device is in the separated state, the pressing piece (400) moves towards the outer side of the inner sleeve (300) and separates from the clamping pieces (200), and the clamping pieces (200) can separate from the inner side of the pressing piece (400) through the exposed opening (301).

2. A sampling device for carbon fiber precursor dope according to claim 1, wherein A separation elastic piece (600) is arranged between the inner sleeve (300) and the pressing piece (400) along the axial direction of the inner sleeve (300), when the sampling device is in the connected state, the pressing piece (400) and the inner sleeve (300) compress the separation elastic piece (600) in the axial direction, and when the sampling device is in the separated state, the separation elastic piece (600) releases and pushes the clamping pieces (200) outwards of the inner sleeve (300).

3. A sampling device for use with a precursor solution of carbon fibres according to claim 2, wherein A constraint member (700) is further arranged between the clamping member (200) and the disengagement elastic member (600), the constraint member (700) is movably sleeved on the side of the clamping member (200) away from the sampling container (100), the constraint member (700) is suitable for constraining the sampling containers (100) close to each other, and the constraint member (700) is slidably connected to the inner side of the inner sleeve (300) in the axial direction of the inner sleeve (300).

4. A sampling device for carbon fiber precursor solution according to claim 1, wherein The clamping member (200) comprises oppositely arranged first and second clamping members (201 and 202), the middle part of the first and second clamping members (201 and 202) in the length direction is provided with a support plate (203), at least one of the clamping member (200) and the support plate (203) is movably connected, the clamping member (200) is divided into a clamping part (200a) and a connecting part (200b) by the support plate (203), the clamping part (200a) corresponds to the sampling container (100), when the sampling device is in the connected state, the clamping part (200a) is exposed to the outside of the inner sleeve (300), and the connecting part (200b) corresponds to the inner side of the inner sleeve (300), when the sampling device is in the connected state, the support plate (203) closes the end opening of the inner sleeve (300).

5. A sampling device for use with a precursor solution of carbon fibres according to claim 4, wherein A clamping elastic member (204) is arranged between the clamping members (200), the clamping elastic member (204) is supported between the opposite pressing members (400), and the clamping elastic member (204) is suitable for supporting the clamping members (200) away from each other; An arc-shaped pressing groove (205) is formed on the outside of the connecting part (200b), when the sampling device is in the connected state, the pressing member (400) and the pressing groove (205) are connected.

6. A sampling device for carbon fiber precursor solution according to claim 1, wherein The inner sleeve (300) is provided with a pressing hole (302) in the radial direction, the pressing member (400) is slidably installed on the inner side of the pressing hole (302), one end of the pressing member (400) close to the inner side of the inner sleeve (300) is an inner end, and the other end of the pressing member (400) close to the outer side of the inner sleeve (300) is an outer end; The inner sleeve (300) is sleeved with an outer sleeve (800) on the radial outer side, the outer sleeve (800) is suitable for moving along the axial direction of the inner sleeve (300), the inner side of the outer sleeve (800) is matched with the outer end of the pressing member (400), when the sampling device is in the connected state, the inner side of the outer sleeve (800) is suitable for pressing the outer end of the pressing member (400), so that the inner end of the pressing member (400) presses the clamping member (200), when the sampling device is in the disengaged state, the inner side of the outer sleeve (800) is away from the outer end of the pressing member (400), the pressing member (400) can move in the pressing hole (302) towards the outer side of the inner sleeve (300), and the inner end of the pressing member (400) is disengaged from the clamping member (200). The sealing structure (500) is located between the inner side of the outer sleeve (800) and the outer side of the inner sleeve (300), and is located on the side of the extrusion piece (400) close to the exposure port (301).

7. A sampling device for use with a precursor solution of carbon fibre precursor according to claim 6, wherein The inner side of the outer sleeve (800) is provided with a constraint groove (801) on the side facing the sampling container (100), and the extrusion hole (302) is provided with a constraint portion (802) extending inward from the end close to the inner side of the inner sleeve (300), and when the sampling device is in the disengaged state, the extrusion piece (400) is limited between the constraint groove (801) and the constraint portion (802).

8. A sampling device for use with a precursor solution of carbon fibre precursor according to claim 7, characterised in that, The extrusion piece (400) is a spherical extrusion piece, the opening of the extrusion hole (302) close to the inner side of the inner sleeve (300) is an inner opening, and the opening of the extrusion hole (302) close to the outer side of the inner sleeve (300) is an outer opening, the inner opening extends inward to form the constraint portion (802), the size of the constraint portion (802) is smaller than the size of the extrusion piece (400), the size of the outer opening is larger than the size of the extrusion piece (400), and the length of the extrusion hole (302) is smaller than the diameter of the extrusion piece (400).

9. A sampling device for carbon fiber precursor solution according to claim 6, wherein The outer sleeve (800) and the inner sleeve (300) are both made of SUS304 stainless steel, and the outer surfaces of the outer sleeve (800) and the inner sleeve (300) are plated with at least one layer of nickel, and the sealing structure (500) is a graphite sealing ring.

10. A sampling device for carbon fiber precursor solution according to claim 6, wherein The inner side of the outer sleeve (800) is provided with a limiting groove (803), the radially outer side of the inner sleeve (300) extends outwardly, the protrusion (303) and the limiting groove (803) are in sliding connection, and the limiting groove (803) limits the protrusion (303) in the circumferential direction of the outer sleeve (800). When the sampling device is in the connected state and the disengaged state, one end of the limiting groove (803) in the length direction abuts against the protrusion (303).

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