A sampling device for esterification of molding resin

Abstract

This invention relates to the field of resin sampling technology, specifically to a sampling device for esterification of molding resin. The device includes a negative pressure suction mechanism, a sampling mechanism mounted on the negative pressure suction mechanism, and a six-component stratified sample storage mechanism located outside the sampling mechanism. The sampling mechanism includes a main pipette, a secondary pipette mounted on the threaded section at the bottom of the main pipette, and a sub-pipette movably mounted inside the secondary pipette. By setting multiple circumferential slots around the secondary pipette and installing the stratified sample storage mechanism at each slot, and arranging the stratified sample storage mechanism at gradually varying heights, the selective control of the sampling mechanism's internal cavity is achieved. As the sub-pipette gradually rises from the bottom to the top of the esterification resin reaction vessel, the controlled cavity of the sampling mechanism can conveniently extract samples from different regions. The samples extracted from different regions are quantitatively transferred and stored in the stratified sample storage mechanism, thereby achieving stratified extraction of the same batch of esterification resin.

Description

Technical Field

[0001] This invention relates to the field of resin sampling technology, specifically to a sampling device for esterification of molding resin. Background Technology

[0002] Resin esterification refers to the dehydration or acetal reaction of polyols, polyacids, and vegetable oils or fatty acids under certain temperature and catalyst conditions to generate macromolecular polymers containing ester groups (-COO-). The derivatives after esterification play a key role in the synthesis of alkyd resins.

[0003] Esterified resins are a class of high molecular weight polymers synthesized through esterification or transesterification reactions, while alkyd resins are widely used in coatings, inks, plastics and other fields, and have excellent performance and broad application prospects.

[0004] In order to detect the completion of the esterification resin reaction, a sampling needle is needed to extract the esterification resin reaction solution. However, the existing sampling needles only have independent cavities. A single sampling needle can only extract the reaction solution sample from a selected area. Furthermore, the depth of the single-cavity sampling needle into the reaction vessel is limited by the operation and sampling parameters. When multiple samples need to be compared, multiple new sampling needles are required to avoid interference in the sampling and testing.

[0005] However, the number of sampling needles required by the above method depends on the sample area of ​​the esterified resin reaction liquid in the storage tank. Therefore, the frequent insertion and withdrawal operations are quite troublesome. At the same time, the volume of each sample taken also needs to be matched with the scale of the observation container, which is cumbersome and wasteful of equipment.

[0006] In view of this, a sampling device for esterification of molding resin was designed to solve the above problems. Summary of the Invention

[0007] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0008] Therefore, the technical solution adopted in this invention is as follows:

[0009] A sampling device for esterification of molding resin includes a negative pressure suction mechanism, a sampling mechanism disposed on the negative pressure suction mechanism, and a six-component stratified sample storage mechanism disposed outside the sampling mechanism. The sampling mechanism includes a main suction tube, a secondary suction tube installed on the threaded section at the bottom of the main suction tube, a sub-suction tube movably installed inside the secondary suction tube, multiple partition plates evenly distributed in the inner cavity of the secondary suction tube, an adjusting suction rod movably installed inside the multiple partition plates, and a diversion suction tube installed inside the sub-suction tube and penetrating into the multiple partition plates. The sampling mechanism also includes a positioning plate installed inside the sub-suction tube, and the diversion suction tube is movably installed inside the positioning plate. The inner wall of the diversion suction tube is provided with a convex rail, and a cylindrical cavity is opened inside the diversion suction tube. A push screw is movably installed in the middle of the cylindrical cavity, a discharge pad is installed at the bottom end of the push screw, and a plug is disposed outside the push screw and located in the cylindrical cavity. The groove outside the plug is adapted to be engaged with the outside of the convex rail. The outer wall of the diversion suction tube is provided with multiple overflow holes evenly distributed.

[0010] In a preferred embodiment, the present invention may be further configured as follows: the layered sample storage mechanism includes a sealed sample storage tube installed on the auxiliary suction tube, a stabilizing core rod disposed in the middle of the inner cavity of the sealed sample storage tube, a sealing head disposed outside the stabilizing core rod and snapped onto the top of the sealed sample storage tube, a movable tube installed at the bottom of the stabilizing core rod, a compression spring disposed inside the movable tube, a positioning rod movably installed inside the movable tube, a first spring movably installed outside the positioning rod, a fixed end connected between the bottom end of the movable tube and the first spring, and a storage compartment disposed at the bottom of the positioning rod;

[0011] The stratified sample storage mechanism is used for quantitative storage of esterified resin within a selected area.

[0012] In a preferred embodiment, the present invention can be further configured as follows: the negative pressure suction mechanism includes a negative pressure cover disposed at the top of the main suction pipe, two clamps installed between the negative pressure cover and the main suction pipe, a machine housing disposed in the middle of the two clamps, a motor installed inside the machine housing, a drive pulley installed on the transmission shaft inside the motor, a transmission pulley movably installed inside the negative pressure cover, a lead screw disposed inside the transmission pulley, and a negative pressure plug installed at the top of the lead screw;

[0013] The drive pulley and the transmission pulley are connected by a transmission belt.

[0014] The negative pressure suction mechanism is used to extract a constant volume of esterified resin in different areas, ensuring that the negative pressure intensity of the main suction tube remains constant each time.

[0015] In a preferred embodiment, the present invention may be further configured such that: the layered sample storage mechanism further includes a discharge arc pipe installed at the bottom of the storage chamber, a second spring installed at the bottom of the inner cavity of the storage chamber, and an anti-overflow gasket installed at the top of the second spring;

[0016] The inner cavity of the discharge arc tube is connected to the inner cavity of the storage chamber.

[0017] In a preferred embodiment, the present invention can be further configured such that: a slot is provided inside the bottom end of the positioning rod, and the anti-overflow gasket is used to separate the slot from the cavity that communicates with the discharge arc pipe.

[0018] In a preferred embodiment, the present invention may be further configured such that the negative pressure suction mechanism further includes an end head installed at the top of the negative pressure hood, two clamps disposed at the top of the negative pressure hood, and two positioning studs disposed inside the two clamps;

[0019] One of the positioning studs is used to fix the suction core rod, and the other positioning stud is used to fix the diversion suction tube.

[0020] In a preferred embodiment, the present invention may be further configured such that the negative pressure plug is composed of an I-shaped column head and a sealing gasket.

[0021] In a preferred embodiment, the present invention may be further configured such that the sampling mechanism further includes a tray fixedly installed on the top of the main suction tube, and the outer end of the tray is provided with an anti-slip pad.

[0022] In a preferred embodiment, the present invention may be further configured such that: the top end of the sub-pipette is provided with a funnel-shaped bevel, and the funnel-shaped bevel is used to provide an effective release channel for excess sample, thereby preventing excess sample from accumulating in the inner cavity of the sub-pipette.

[0023] In a preferred embodiment, the present invention can be further configured such that the inner diameter of the movable stopper is the same as the diameter of the positioning rod, and the top of the positioning rod has an outward bevel to prevent the sample entering the inner cavity of the sealed sample storage tube from accumulating.

[0024] By adopting the above technical solution, the beneficial effects achieved by the present invention are as follows:

[0025] 1. This invention provides a multi-slotted system with multiple surrounding slots on the outside of the sub-pipette, and a layered sample storage mechanism installed on each slot. The multi-slotted sample storage mechanism is arranged with varying heights. By selectively controlling the inner cavity of the sampling mechanism, as the sub-pipette gradually rises from the bottom to the top of the esterification resin reaction vessel, the controlled cavity of the sampling mechanism can conveniently extract samples from different regions. The samples extracted from different regions are quantitatively transferred and stored in the multi-slotted sample storage mechanism, thereby achieving layered extraction of the same batch of esterification resin.

[0026] 2. This invention provides a storage chamber at the bottom of a sealed sample storage tube, with a movable stopper directly above the storage chamber. As the negative pressure suction mechanism regularly regulates the pressure inside the main suction tube, the movable stopper also changes the pressure at the bottom of the sealed sample storage tube. As a result, the sample that is sucked in can be stored evenly inside the storage chamber, thus ensuring a constant sample volume each time it is extracted.

[0027] 3. In this invention, by manually rotating the diversion pipette, the plug will rise uniformly upward along the push screw. Then, the inner cavity of the main pipette will connect with the selected overflow hole through the adjusted cylindrical cavity, and with the help of the stretched suction rod, it will be transferred to different partition plates. Finally, the samples in different areas will be effectively drawn in. With the regular change from negative pressure to recovery in the inner cavity of the main pipette, the excess samples drawn in and stored in different areas will be discharged back into the area selected by the esterification resin, thereby avoiding waste caused by excessive sample extraction. Attached Figure Description

[0028] Figure 1 This is a schematic diagram illustrating the use of the present invention;

[0029] Figure 2 This is a front view of the present invention;

[0030] Figure 3 This is a schematic diagram of the negative pressure suction mechanism of the present invention;

[0031] Figure 4 This is a partial schematic diagram of the present invention;

[0032] Figure 5 This is an exploded view of the sampling mechanism of the present invention;

[0033] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0034] Figure 7 This is a partial schematic diagram of the sampling mechanism of the present invention;

[0035] Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle;

[0036] Figure 9 This is a schematic diagram of the layered sample storage method of the present invention;

[0037] Figure 10 For the present invention Figure 9 An explosion diagram;

[0038] Figure 11 For the present invention Figure 10 Enlarged diagram of point C in the middle.

[0039] Figure label:

[0040] 100. Sampling mechanism; 110. Main suction tube; 120. Support plate; 130. Secondary suction tube; 140. Sub-suction tube; 150. Adjusting suction rod; 160. Diverting suction tube; 1601. Convex rail; 1602. Cylindrical cavity; 1603. Push screw; 1604. Plug; 1605. Overflow hole; 1606. Positioning plate; 1607. Discharge pad; 170. Dividing pad;

[0041] 200. Layered sample storage mechanism; 210. Sealed sample storage tube; 220. Sealing head; 230. Stabilizing core rod; 240. Movable tube; 2401. Compression spring; 250. Fixed end; 260. First spring; 270. Movable plug; 280. Positioning rod; 2801. Slot; 290. Material storage chamber; 2901. Discharge arc tube; 2902. Second spring; 2903. Anti-overflow gasket;

[0042] 300. Negative pressure suction mechanism; 310. Negative pressure cover; 320. End head; 330. Clamp; 340. Positioning stud; 350. Fixture; 360. Chassis; 3601. Motor; 3602. Drive pulley; 3603. Transmission belt; 370. Transmission pulley; 380. Lead screw; 390. Negative pressure plug. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0044] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0045] The following describes, with reference to the accompanying drawings, some embodiments of a molding resin esterification sampling device provided by the present invention. Example

[0046] Combination Figures 1 to 11 As shown, the present invention provides a sampling device for esterification of molding resin, including a negative pressure suction mechanism 300, a sampling mechanism 100 disposed on the negative pressure suction mechanism 300, and a six-component layered sample storage mechanism 200 disposed outside the sampling mechanism 100. The sampling mechanism 100 is used to sample different regions of the esterified resin, the six-component layered sample storage mechanism 200 quantitatively stores the samples extracted from different regions of the esterified resin, and the negative pressure suction mechanism 300 is used to provide constant pressure control for the sampling mechanism 100.

[0047] The sampling mechanism 100 includes a main suction tube 110, a support plate 120 fixedly installed on the top of the main suction tube 110, and an anti-slip pad provided on the outer end of the support plate 120, a secondary suction tube 130 installed on the threaded section at the bottom of the main suction tube 110, a sub-suction tube 140 movably installed inside the secondary suction tube 130, a plurality of partition plates 170 installed in the inner cavity of the secondary suction tube 130 and evenly distributed, an adjusting suction core rod 150 movably installed inside the plurality of partition plates 170, and a diversion suction tube 160 installed inside the sub-suction tube 140 and penetrating into the plurality of partition plates 170.

[0048] The sampling mechanism 100 also includes a positioning plate 1606 installed inside the sub-pipe 140, and a diversion pipe 160 is movably installed inside the positioning plate 1606. The inner wall of the diversion pipe 160 is provided with a convex rail 1601. A cylindrical cavity 1602 is opened inside the diversion pipe 160. A push screw 1603 is movably installed in the middle of the cylindrical cavity 1602. A discharge pad 1607 is installed at the bottom of the push screw 1603. A plug 1604 is provided outside the push screw 1603 and located inside the cylindrical cavity 1602. The groove outside the plug 1604 is adapted to be engaged with the outside of the convex rail 1601.

[0049] The outer wall of the diversion straw 160 is provided with multiple overflow holes 1605 that are evenly distributed;

[0050] The top of the subpipet 140 is provided with a funnel-shaped bevel, which provides an effective release pathway for excess sample and prevents excess sample from accumulating in the inner cavity of the subpipet 130.

[0051] Pre-stretch the subpipe 140 according to the volume of the esterification reaction vessel until the lengths of the subpipe 140 and the auxiliary pipette 130 are adapted to the depth of the inner cavity of the reaction vessel. Then, the testing personnel need to hold the main pipette 110 and insert the subpipe 140 vertically into the inside of the reaction vessel until the bottom end of the subpipe 140 reaches the selected sample area of ​​the reaction liquid.

[0052] The initial sample area is the reaction liquid at the bottom of the reaction vessel cavity. Therefore, the initial sampling can be carried out from the bottom of the esterification resin reaction vessel. Subsequent sampling only requires slowly raising the subpipe 140 along the reaction vessel.

[0053] In the initial state, the plug 1604 is located at the top of the overflow hole 1605 at the bottom. Then, the bottom end of the suction rod 150 is inserted into the second-to-last partition plate 170. Then, the motor 3601 is started to reverse. After the drive pulley 3602 drives the drive belt 3603 and the drive pulley 370, the lead screw 380 is pushed down by the drive pulley 370. Finally, the lead screw 380 will drive the negative pressure plug 390 to descend until the negative pressure plug 390 descends at a constant speed along the negative pressure cover 310. At this time, the negative pressure cover 310 and the inner cavity of the main suction tube 110 will generate a constant intensity of negative pressure. The reaction liquid sample in the bottom sample area of ​​the esterification resin reaction vessel is sucked into the sub-suction tube 140 under the action of negative pressure. At this time, the sample is located in the gap between the two bottom partition plates 170.

[0054] As the motor 3601 rotates forward, the negative pressure plug 390 will quickly reset along the inner cavity of the negative pressure cover 310. Finally, the samples extracted from the inner cavities of the main pipette 110 and the auxiliary pipette 130 are pushed during the negative pressure period. A portion of the samples can be quantitatively stored by the bottom set of layered sample storage mechanisms 200, while the samples exceeding the storage capacity of the layered sample storage mechanism 200 will flow back into the cylindrical cavity 1602 through the bottom overflow hole 1605 and finally be released into the reaction vessel.

[0055] According to the above operation, by controlling the vertical rise and fall of the plug 1604, when the plug 1604 pauses at the selected position inside the cylindrical cavity 1602, the reaction liquid sample will be in a layered state after entering the cylindrical cavity 1602. At the same time, the selective rise and fall of the bottom end of the suction rod 150 inside the multiple separating pads 170 is adjusted. As the suction rod 150 rises or falls, the layered cavities will be in a connected state. By changing the area of ​​the connected cavity, a transfer channel is provided for the reaction liquid samples that are subsequently extracted. Finally, the reaction liquid samples in different layered areas can be selectively extracted. Example

[0056] Combination Figures 5 to 11 As shown, based on Embodiment 1, the layered sample storage mechanism 200 includes a sealed sample storage tube 210 installed on the auxiliary suction tube 130, a stabilizing core rod 230 disposed in the middle of the inner cavity of the sealed sample storage tube 210, a sealing head 220 disposed outside the stabilizing core rod 230 and snapped onto the top of the sealed sample storage tube 210, a movable tube 240 installed at the bottom of the stabilizing core rod 230, a compression spring 2401 disposed inside the movable tube 240, a positioning rod 280 movably installed inside the movable tube 240, a first spring 260 movably installed outside the positioning rod 280, a fixed end 250 connected between the bottom end of the movable tube 240 and the first spring 260, and a storage compartment 290 disposed at the bottom of the positioning rod 280.

[0057] The material discharge arc pipe 2901 is installed at the bottom of the storage bin 290, the second spring 2902 is installed at the bottom of the inner cavity of the storage bin 290, and the anti-overflow gasket 2903 is installed at the top of the second spring 2902.

[0058] The inner cavity of the discharge arc pipe 2901 is connected to the inner cavity of the storage chamber 290;

[0059] The bottom end of the positioning rod 280 has a slot 2801, and the anti-overflow gasket 2903 is used to separate the cavity that connects the slot 2801 and the discharge arc tube 2901.

[0060] The inner diameter of the movable stopper 270 is the same as that of the positioning rod 280, and the top of the positioning rod 280 is provided with an outward V-shaped bevel to prevent the sample from accumulating inside the sealed sample storage tube 210.

[0061] Preferably, the sealed sample storage tube 210 is T-shaped, and the sealing head 220 extends into the bottom of the sealed sample storage tube 210 and is provided with a protruding rubber end.

[0062] The movable tube 240 and the first spring 260 are both made of stainless steel. Rubber gaskets are provided on the outer side of the bottom annular end of the movable tube 240 and the outer side of the first spring 260. The sealed sample storage tube 210 is made of transparent glass.

[0063] When the sample is drawn into the pipe at the bottom of the sealed sample storage tube 210, under the action of negative pressure, the first spring 260 and the movable tube 240 will descend along the inner cavity of the main suction tube 110. At this time, there will also be a negative pressure phenomenon in the bottom cavity after the sealed sample storage tube 210 and the movable tube 240 are separated. As the pressure in the main suction tube 110 gradually becomes constant, the sample that has entered the bottom pipe of the sealed sample storage tube 210 can be sucked into the interior of the storage chamber 290 under the reset of the movable tube 240. As the stabilizing core rod 230 drives the movable tube 240, the positioning rod 280 and the storage chamber 290 to be pulled out from the interior of the sealed sample storage tube 210, the storage chamber 290 with constant volume can send out the quantitatively stored sample. Example

[0064] Combination Figures 3 to 8 As shown, in the above embodiment, the negative pressure suction mechanism 300 includes a negative pressure cover 310 disposed at the top of the main suction pipe 110, two clamps 350 installed between the negative pressure cover 310 and the main suction pipe 110, a housing 360 disposed in the middle of the two clamps 350, a motor 3601 installed inside the housing 360, a drive pulley 3602 installed on the transmission shaft inside the motor 3601, a transmission pulley 370 movably installed inside the negative pressure cover 310, a lead screw 380 disposed inside the transmission pulley 370, and a negative pressure plug 390 installed at the top of the lead screw 380.

[0065] The end 320 is installed at the top of the negative pressure cover 310, two clamps 330 are provided at the top of the negative pressure cover 310, and two positioning studs 340 are provided inside the two clamps 330.

[0066] One of the positioning studs 340 is used to fix the suction core rod 150, and the other positioning stud 340 is used to fix the diversion suction tube 160;

[0067] A drive belt 3603 is connected to the drive pulley 3602 and the transmission pulley 370.

[0068] The negative pressure plug 390 consists of an I-shaped head and a sealing gasket.

[0069] Preferably, the negative pressure cover 310 and the main suction tube 110 are both made of stainless steel, and the auxiliary suction tube 130 and the sub-suction tube 140 are made of transparent glass;

[0070] The negative pressure hood 310 has an overall L-shaped structure, and the volume of the external cylindrical pipe of the negative pressure hood 310 is one-third of the volume of the inner cavity of the main suction pipe 110. The two clamps 330 are fixed to the top of the negative pressure hood 310 by bolts.

[0071] When the two positioning studs 340 are loosened, the suction rod 150 can be adjusted in height, and the diversion tube 160 can also rotate and move in height freely. After the suction rod 150 and the diversion tube 160 are adjusted, tightening the two positioning studs 340 can quickly lock the suction rod 150 and the diversion tube 160.

[0072] When the motor 3601 reverses, the drive pulley 3602 installed on the transmission shaft inside the motor 3601 will drive the transmission belt 3603, which in turn will drive the transmission pulley 370. At this time, the lead screw 380 will drive the negative pressure plug 390 to move to the bottom of the cylindrical pipe, so the intensity of the negative pressure in the inner cavity of the main suction pipe 110 can remain consistent each time.

[0073] As the motor 3601 rotates forward, the negative pressure plug 390 returns to the top of the cylindrical tube, and the negative pressure state of the main pipette 110 after each adjustment is balanced, thereby ensuring a constant sample volume each time.

[0074] The working principle and usage process of this invention are as follows: The sampling mechanism 100 is arranged vertically in the vertical direction beforehand, and the diversion pipette 160 is inserted into the main pipette 110 until the diversion pipette 160 pushes the sub-pipette 140 to extend outward. At this time, the overall length of the sub-pipette 140, the auxiliary pipette 130 and the main pipette 110 will increase. Then, the sub-pipette 140 is inserted into the bottom of the inner cavity of the esterification resin reaction vessel. When the bottom end of the sub-pipette 140 is located at the bottom of the inner cavity of the reaction vessel, this area can be used as the initial sample area for detection.

[0075] When the bottom end of the sub-pipe 140 enters the bottom of the inner cavity of the esterification resin reaction vessel, the diversion pipe 160 is rotated counterclockwise. At this time, the diversion pipe 160 will rotate along the inside of the positioning plate 1606, and the push screw 1603, which is fixed by the discharge pad 1607, will passively push the plug 1604 upward until the overflow hole 1605 at the bottom of the diversion pipe 160 is connected to the inner cavity of the auxiliary pipe 130. Then, the diversion pipe 160 is raised one layer until the bottom end of the diversion pipe 160 is embedded in the second-to-last partition plate 170. The cavity of the main pipe 110 is connected to the overflow hole 1605 at the top and the inner cavity of the diversion pipe 160, and then the two partition plates at the bottom are connected. The gap between the plates 170 can be connected to the cavity of the sub-pipe 140 through the aforementioned diversion pipe 160 and the inner cavity of the main pipe 110. Then, the motor 3601 is run. As the motor 3601 reverses, the drive pulley 3602 installed on the transmission shaft of the motor 3601 will drive the transmission pulley 370. At this time, the transmission pulley 370 will push the lead screw 380 to extend outward, and the negative pressure plug 390 installed at the top of the lead screw 380 will descend along the inner cavity of the negative pressure cover 310. Finally, the cavity after the negative pressure cover 310 and the main pipe 110 are connected can generate negative pressure, so that the sample at the bottom of the inner cavity of the esterification resin reaction container can be effectively extracted until the esterification resin is drawn into the two bottom-placed partition plates 170.

[0076] Then the motor 3601 rotates forward until the air pressure in the inner cavity of the negative pressure hood 310 and the inner cavity of the main suction pipe 110 gradually recovers. At this time, the pressure of the esterified resin sample being drawn upward between the two bottom-mounted partition plates 170 will also gradually decrease. As the sample pressure gradually balances, the excess sample will be transferred into the layered sample storage mechanism 200.

[0077] When the esterified resin is transferred into the inner cavity of the sealed sample storage tube 210, during the pressure recovery period from negative pressure to normal pressure in the sampling mechanism 100, the movable plug 270, under the traction of the first spring 260, will provide pressure regulation to the cavity at the bottom of the sealed sample storage tube 210. Finally, the sample that enters the bottom cavity of the sealed sample storage tube 210 can be quantitatively stored inside the storage chamber 290 during pressure equilibrium. The excess sample will re-enter the cavity separated by the cylindrical cavity 1602 and the plug 1604 through the gap between the two bottom partition plates 170. Finally, the excess sample will be discharged from the sub-pipe 140 back to the bottom of the esterified resin.

[0078] After the subpipette 140 is lifted from the bottom sample area of ​​the reaction liquid in the steps, the plug 1604 will rise along the push screw 1603 by adjusting the rotation of the split pipette 160. At this time, the multiple overflow holes 1605 opened on the outer wall of the split pipette 160 can selectively connect with the cylindrical cavity 1602 and the inner cavity of the main pipette 110 until the samples extracted from different areas of the reaction liquid are stored in the other multi-component stratified sample storage mechanism 200 in sequence. By extracting the inner cavity of the reaction container in layers, the stratified samples are compared and detected, and the data after the detection of multiple samples are compared to verify the completion of the esterification resin reaction.

[0079] After the sample is extracted, the sampling mechanism 100 is removed from the inner cavity of the reaction vessel until the sub-pipette 140 is pulled out from the reaction liquid sample area. Then, according to the detection sequence, multiple stabilizing core rods 230 are pulled out from bottom to top. Finally, the storage chamber 290 is pulled out from the inner cavity of the sealed sample storage tube 210. Then, the tester holds and presses the stabilizing core rods 230 and the storage chamber 290 with both hands. Finally, the sample quantitatively stored in the storage chamber 290 will be discharged through the slot hole 2801 under the compression of the first spring 260. Finally, the sample entering the slot hole 2801 will push the anti-overflow pad 2903 down until the sample can be quickly released from the discharge arc tube 2901 according to the detection requirements.

[0080] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sampling device for esterification of molding resin, comprising a negative pressure suction mechanism (300), characterized in that, It also includes a sampling mechanism (100) installed on the negative pressure suction mechanism (300) and a six-component stratified sample storage mechanism (200) installed outside the sampling mechanism (100). The sampling mechanism (100) includes a main suction tube (110), a secondary suction tube (130) installed on the threaded section at the bottom of the main suction tube (110), a sub-suction tube (140) movably installed inside the secondary suction tube (130), a plurality of partition plates (170) installed in the inner cavity of the secondary suction tube (130) and evenly distributed, an adjusting suction rod (150) movably installed inside the plurality of partition plates (170), and a diversion suction tube (160) installed inside the sub-suction tube (140) and penetrating into the plurality of partition plates (170). The inner wall of the diversion suction tube (160) is provided with a convex rail (1601), and a cylindrical cavity (1602) is opened inside the diversion suction tube (160). A push screw (1603) is movably installed in the middle of the cylindrical cavity (1602), a discharge pad (1607) is installed at the bottom end of the push screw (1603), and a plug (1604) is set outside the push screw (1603) and located inside the cylindrical cavity (1602). The groove outside the plug (1604) is adapted to be snapped into the outside of the convex rail (1601). The layered sample storage mechanism (200) includes a sealed sample storage tube (210) installed on the auxiliary suction tube (130), a stabilizing core rod (230) located in the middle of the inner cavity of the sealed sample storage tube (210), a sealing head (220) located outside the stabilizing core rod (230) and snapped onto the top of the sealed sample storage tube (210), a movable tube (240) installed at the bottom of the stabilizing core rod (230), a compression spring (2401) located inside the movable tube (240), a positioning rod (280) movably installed inside the movable tube (240), a first spring (260) movably installed outside the positioning rod (280), a fixed end (250) connected between the bottom end of the movable tube (240) and the first spring (260), and a storage compartment (290) located at the bottom of the positioning rod (280). The stratified sample storage mechanism (200) is used for quantitative storage of esterified resin within a selected area.

2. The molding resin esterification sampling device according to claim 1, characterized in that, The layered sample storage mechanism (200) also includes a discharge arc pipe (2901) installed at the bottom of the storage chamber (290), a second spring (2902) installed at the bottom of the inner cavity of the storage chamber (290), and an anti-overflow pad (2903) installed at the top of the second spring (2902). The inner cavity of the discharge arc pipe (2901) is connected to the inner cavity of the storage chamber (290).

3. The molding resin esterification sampling device according to claim 2, characterized in that, The bottom end of the positioning rod (280) has a slot (2801) inside, and the anti-overflow gasket (2903) is used to separate the cavity that is connected to the slot (2801) and the discharge arc tube (2901).

4. The molding resin esterification sampling device according to claim 1, characterized in that, The negative pressure suction mechanism (300) includes a negative pressure cover (310) disposed at the top of the main suction pipe (110), two clamps (350) installed between the negative pressure cover (310) and the main suction pipe (110), a housing (360) disposed in the middle of the two clamps (350), a motor (3601) installed inside the housing (360), a drive pulley (3602) installed on the transmission shaft inside the motor (3601), a transmission pulley (370) movably installed inside the negative pressure cover (310), a lead screw (380) disposed inside the transmission pulley (370), and a negative pressure plug (390) installed at the top of the lead screw (380). The drive pulley (3602) and the transmission pulley (370) are connected by a transmission belt (3603). The negative pressure suction mechanism (300) is used to extract esterified resin in different areas with a constant capacity, ensuring that the negative pressure intensity of the main suction tube (110) remains constant each time.

5. The molding resin esterification sampling device according to claim 1, characterized in that, The negative pressure suction mechanism (300) also includes an end (320) installed at the top of the negative pressure cover (310), two clamps (330) set at the top of the negative pressure cover (310), and two positioning studs (340) set inside the two clamps (330). One of the positioning studs (340) is used to fix the suction core rod (150), and the other positioning stud (340) is used to fix the diversion suction tube (160).

6. The molding resin esterification sampling device according to claim 4, characterized in that, The negative pressure plug (390) consists of an I-shaped head and a sealing gasket.

7. The molding resin esterification sampling device according to claim 1, characterized in that, The sampling mechanism (100) also includes a tray (120) fixedly installed on the top of the main suction tube (110), and the outer end of the tray (120) is provided with an anti-slip pad, a positioning disk (1606) installed inside the sub-suction tube (140), and a diversion suction tube (160) movably installed inside the positioning disk (1606), and the outer wall of the diversion suction tube (160) is provided with multiple overflow holes (1605) distributed at equal intervals.

8. The molding resin esterification sampling device according to claim 1, characterized in that, The top of the subpipe (140) is provided with a funnel-shaped bevel, which provides an effective release pathway for excess sample and avoids the accumulation of excess sample in the inner cavity of the subpipe (130).

9. A sampling device for esterification of molding resin according to claim 1, characterized in that, A movable stopper (270) is provided directly above the storage chamber (290). The inner diameter of the movable stopper (270) is the same as that of the positioning rod (280), and the top of the positioning rod (280) is provided with an outward slanted opening to prevent the sample entering the inner cavity of the sealed sample storage tube (210) from accumulating.

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