CN108827709B - A sampling device for reation kettle - Google Patents
A sampling device for reation kettle Download PDFInfo
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- CN108827709B CN108827709B CN201810633936.6A CN201810633936A CN108827709B CN 108827709 B CN108827709 B CN 108827709B CN 201810633936 A CN201810633936 A CN 201810633936A CN 108827709 B CN108827709 B CN 108827709B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
- G01N2001/1427—Positive displacement, piston, peristaltic
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a sampling device for a reaction kettle, which comprises a sampling tube arranged on the reaction kettle, wherein the sampling tube is connected with a transfer bottle, a pressure release valve and a first stop valve, a semicircular hole is formed in the sampling tube, a first piston is sleeved in the semicircular hole, and a high-pressure air pipe is arranged on the left side of the first piston; the transfer bottle comprises a bottle opening part and a bottle body part which are integrally formed, the bottle opening part is inserted and fixed on the sampling tube, a circular cylinder body is formed in the bottle body part, a reverse pushing mechanism is arranged in the circular cylinder body, and a discharge tube and a vacuum tube are connected to the side wall of the bottle body part; the bottle mouth part is formed with a through hole, the outer wall of a small piston of the reverse thrust mechanism is matched with the inner wall of the through hole, and the small piston is inserted and sleeved in the middle of the large piston. The invention can vacuumize and clean the sampling pipeline, ensures the effectiveness of the sampled sample, is convenient and quick to sample, can send redundant samples back to the reaction kettle, and reduces the production cost.
Description
The technical field is as follows:
the invention relates to the technical field of chemical machinery, in particular to a sampling device for a reaction kettle.
Background art:
at present, a reaction kettle is widely applied to the production of polyester resin, and in the production process, a sample needs to be taken from the reaction kettle to detect the condition in the production process of the polyester resin. At present, the sampling of a reaction kettle is generally carried out through a sampling device, the sampling device samples from a bottom valve or a top valve of the reaction kettle or a pipeline position in the reaction process, but the redundant samples cannot be recovered usually in the sampling process, more samples can be wasted, and the production cost is improved.
The invention content is as follows:
the invention aims to overcome the defects of the prior art, and provides a sampling device for a reaction kettle, which can vacuumize and clean a sampling pipeline, ensure the effectiveness of a sampling sample, is convenient and quick to sample, can return redundant samples to the reaction kettle, and reduces the production cost.
The scheme for solving the technical problems is as follows:
a sampling device for a reaction kettle comprises a sampling tube arranged on the side wall of the lower end of the reaction kettle, wherein the right end of the sampling tube extends into the reaction kettle; the sampling tube is sequentially connected with a transfer bottle, a pressure release valve and a first stop valve from left to right, a semicircular hole with an opening at the right side and communicated with the inside of the reaction kettle is formed in the sampling tube, a first piston matched with the inner wall of the semicircular hole is sleeved in the semicircular hole, an air hole communicated with the semicircular hole is formed in the left side wall of the sampling tube and connected with one end of a high-pressure air pipe, and the other end of the high-pressure air pipe is connected with a high-pressure pump; the transfer bottle comprises a bottle opening part and a bottle body part which are integrally formed, the bottle opening part is inserted and fixed on the sampling tube, a circular cylinder body is formed in the bottle body part, a reverse pushing mechanism is arranged in the circular cylinder body, a large piston of the reverse pushing mechanism is inserted and sleeved in the circular cylinder body, a sampling cavity is formed by the lower bottom surface of the large piston and the lower half part of the circular cylinder body, a discharge pipe and a vacuum pipe which are communicated with the sampling cavity are connected to the side wall of the bottle body part, a discharge valve is arranged on the discharge pipe, a pressure gauge and a second stop valve are arranged on the vacuum pipe, and; a through hole for communicating the sampling cavity with the semicircular hole is formed in the bottle mouth part, a small piston of the reverse pushing mechanism is positioned right above the through hole, and the small piston is inserted and sleeved in the middle of a large piston; the outer wall of the small piston is matched with the inner wall of the through hole; the right end of the first piston extends to the lower part of the through hole.
The reverse pushing mechanism also comprises a driving part arranged in the circular cylinder body, the driving part comprises a hexagonal boss, a large screw rod and a circular boss which are integrally formed, and the hexagonal boss and the circular boss are respectively positioned at the upper end and the lower end of the large screw rod; the large piston is hinged to the circular boss through a bearing, the large screw is in threaded connection with threads on the inner wall of the fixing ring, and the fixing ring is fixed in the middle of the circular cylinder body;
the driving part is formed with a step through hole with a large upper part and a small lower part, a second inner wall thread is formed on the inner wall of a small hole at the lower end of the step through hole, a small screw rod is screwed on the second inner wall thread, the small piston is fixed at the lower end of the small screw rod, a hexagonal cylinder is fixed at the upper end of the small screw rod, and the hexagonal cylinder is arranged in a large hole at the upper end of the step through hole.
The side wall of the bottle body part is formed with a rectangular opening communicated with the sampling cavity, a liquid viewing mirror is connected in the rectangular opening in a sealing mode, the inner wall of the liquid viewing mirror is arc-shaped, and the inner wall of the liquid viewing mirror is matched with the outer wall of the large piston.
A sealing groove is formed in the outer wall of the first piston, a sealing ring is sleeved in the sealing groove, and the outer wall of the sealing ring is pressed against the inner wall of the semicircular hole.
The first piston is formed by molding a magnet, the outer wall of the sampling tube is sleeved with a viewing ring, and the first piston can drive the viewing ring to slide left and right; a limiting block is fixed on the outer wall of the sampling tube and located between the pressure release valve and the second stop valve, and a viewing ring is located between the limiting block and the second stop valve.
The invention has the following outstanding effects: compared with the prior art, it can carry out the evacuation clearance to the sample pipeline, guarantees the validity of sample, and sample convenient and fast simultaneously, and can send unnecessary sample back to reation kettle in, reduced manufacturing cost.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 2 taken about B-B;
fig. 4 is a cross-sectional view of fig. 2 taken about C-C.
The specific implementation mode is as follows:
example, referring to fig. 1 to 4, a sampling apparatus for a reaction vessel includes a sampling tube 2 installed on a lower end side wall of the reaction vessel 1, a right end of the sampling tube 2 extending into the interior of the reaction vessel 1; the sampling tube 2 is sequentially connected with a transfer bottle 3, a pressure release valve 91 and a first stop valve 92 from left to right, the sampling tube 2 is formed with a semicircular hole 201 with a right opening and communicated with the interior of the reaction kettle 1, a first piston 51 matched with the inner wall of the semicircular hole 201 is sleeved in the semicircular hole 201, an air hole 202 communicated with the semicircular hole 201 is formed in the left side wall of the sampling tube 2, the air hole 202 is connected with one end of a high-pressure air tube 52, and the other end of the high-pressure air tube 52 is connected with a high-pressure pump 53; the transfer bottle 3 comprises a bottle mouth part 31 and a bottle body part 32 which are integrally formed, the bottle mouth part 31 is inserted and fixed on the sampling tube 2, a circular cylinder body 321 is formed in the bottle body part 32, a reverse pushing mechanism 4 is arranged in the circular cylinder body 321, a large piston 41 of the reverse pushing mechanism 4 is inserted and fixed in the circular cylinder body 321, the lower bottom surface of the large piston 41 and the lower half part of the circular cylinder body 321 form a sampling cavity 301, a discharge pipe 54 and a vacuum pipe 55 which are communicated with the sampling cavity 301 are connected to the side wall of the bottle body part 32, a discharge valve 93 is arranged on the discharge pipe 54, a pressure gauge 95 and a second stop valve 94 are arranged on the vacuum pipe 55, and the other end of the vacuum pipe; a through hole 311 for communicating the sampling cavity 301 with the semicircular hole 201 is formed in the bottleneck part 31, the small piston 42 of the reverse thrust mechanism 4 is positioned right above the through hole 311, and the small piston 42 is inserted and sleeved in the middle of the large piston 41; the outer wall of the small piston 42 is matched with the inner wall of the through hole 311; the right end of the first piston 51 extends below the through hole 311.
Furthermore, the thrust reverser 4 further comprises a driving part 43 disposed in the circular cylinder 321, the driving part 43 comprises a hexagonal boss 431, a large screw 432 and a circular boss 433 which are integrally formed, and the hexagonal boss 431 and the circular boss 433 are respectively located at the upper end and the lower end of the large screw 432; the large piston 41 is hinged on the circular boss 433 through a bearing 44, the large screw 432 is screwed on the thread 471 on the inner wall of the fixing ring 47, and the fixing ring 47 is fixed in the middle of the circular cylinder 321;
a stepped through hole 434 with a large upper part and a small lower part is formed in the driving part 43, a second inner wall thread 435 is formed on the inner wall of the lower end small hole of the stepped through hole 434, a small screw 45 is screwed on the second inner wall thread 435, the small piston 42 is fixed at the lower end of the small screw 45, a hexagonal cylinder 46 is fixed at the upper end of the small screw 45, and the hexagonal cylinder 46 is arranged in the upper end large hole of the stepped through hole 434.
Furthermore, a rectangular notch 322 communicated with the sampling cavity 301 is formed in the side wall of the bottle body part 32, the inside of the rectangular notch 322 is hermetically connected with the liquid viewing lens 33, the inner wall of the liquid viewing lens 33 is arc-shaped, and the inner wall of the liquid viewing lens 33 is matched with the outer wall of the large piston 41.
Furthermore, a sealing groove is formed on the outer wall of the first piston 51, a sealing ring 57 is sleeved in the sealing groove, and the outer wall of the sealing ring 57 is pressed against the inner wall of the semicircular hole 201.
Furthermore, the first piston 51 is formed by molding a magnet, the outer wall of the sampling tube 2 is sleeved with a view ring 58, and the first piston 51 can drive the view ring 58 to slide left and right; a limiting block 59 is fixed on the outer wall of the sampling tube 2, the limiting block 59 is positioned between the pressure relief valve 91 and the second stop valve 94, and the viewing ring 58 is positioned between the limiting block 59 and the second stop valve 94.
The working principle is as follows: sampling: firstly, opening the second stop valve 94, opening the vacuum pump 56, vacuumizing the sampling cavity 301 and the semicircular hole 201 of the sampling tube 2, observing the internal pressure by the pressure gauge 95, and closing the second stop valve 94 and the vacuum pump 56 after vacuumizing; secondly, opening the first stop valve 92, allowing the polyester resin in the reaction kettle 1 to enter the sampling tube 2, then entering the sampling cavity 301 of the bottle body part 32 through the through hole 311 of the bottle mouth part 31, and closing the first stop valve 92; thirdly, placing a sample receiving bottle at the end part of the discharge pipe 54, then opening the discharge valve 93, enabling the polyester resin in the sampling cavity 301 to enter the sample receiving bottle through the discharge pipe 54, and then closing the discharge valve 93; fourthly, the large screw 432 is rotated by the hexagonal sleeve through the hexagonal boss 431, the large screw 432 drives the large piston 41 to move downwards under the action of the inner wall thread 331, the large piston 41 moves downwards to press the redundant sample in the sampling cavity 301 back into the sampling tube 2 through the through hole 311, when the downward resistance of the large piston 41 is large, the first stop valve 92 is opened, the large piston 41 continues to move downwards, when the large piston 41 presses against the lower side surface of the circular cylinder 321, the small screw 45 is rotated, the small screw 45 drives the small piston 42 to move downwards and then extends into the through hole 311, the redundant sample in the through hole 311 is pressed back into the sampling tube 2, and finally the small piston 42 presses against the first piston 51; fifthly, the high-pressure pump 53 is started, the semicircular hole 201 is inflated through the high-pressure pipe 52 and the air hole 202, and the high-pressure gas pushes the first piston 51 to the right side from the left side, so that the residual sample in the sampling pipe 2 is pushed back to the reaction kettle 1; when the first piston 51 moves to the right of the limiting block 59, the viewing ring 58 moves together with the first piston 51, so that the position of the first piston 51 can be simply indicated, and when the viewing ring 58 moves to the second stop valve 94, the second stop valve can be closed.
Finally, the above embodiments are only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (4)
1. A sampling device for a reaction kettle comprises a sampling tube (2) arranged on the side wall of the lower end of the reaction kettle (1), wherein the right end of the sampling tube (2) extends into the reaction kettle (1); the method is characterized in that: the sampling tube (2) is sequentially connected with a transfer bottle (3), a pressure release valve (91) and a first stop valve (92) from left to right, a semicircular hole (201) with an opening at the right side and communicated with the interior of the reaction kettle (1) is formed in the sampling tube (2), a first piston (51) matched with the inner wall of the semicircular hole (201) is sleeved in the semicircular hole (201), an air hole (202) communicated with the semicircular hole (201) is formed in the left side wall of the sampling tube (2), the air hole (202) is connected with one end of a high-pressure air tube (52), and the other end of the high-pressure air tube (52) is connected with a high-pressure pump (53); the transfer bottle (3) comprises a bottle mouth part (31) and a bottle body part (32) which are integrally formed, the bottle mouth part (31) is inserted and fixed on the sampling tube (2), a circular cylinder body (321) is formed in the bottle body part (32), a reverse thrust mechanism (4) is arranged in the circular cylinder body (321), a large piston (41) of the reverse thrust mechanism (4) is inserted and sleeved in the circular cylinder body (321), the lower bottom surface of the large piston (41) and the lower half part of the circular cylinder body (321) form a sampling cavity (301), a discharge pipe (54) and a vacuum pipe (55) which are communicated with the sampling cavity (301) are connected to the side wall of the bottle body part (32), a discharge valve (93) is arranged on the discharge pipe (54), a pressure gauge (95) and a second stop valve (94) are arranged on the vacuum pipe (55), and a vacuum pump (56) is connected to the; a through hole (311) for communicating the sampling cavity (301) with the semicircular hole (201) is formed in the bottle mouth part (31), a small piston (42) of the reverse thrust mechanism (4) is positioned right above the through hole (311), and the small piston (42) is inserted and sleeved in the middle of the large piston (41); the outer wall of the small piston (42) is matched with the inner wall of the through hole (311); the right end of the first piston (51) extends to the lower part of the through hole (311);
the reverse pushing mechanism (4) further comprises a driving part (43) arranged in the circular cylinder body (321), the driving part (43) comprises a hexagonal boss (431), a large screw rod (432) and a circular boss (433) which are integrally formed, and the hexagonal boss (431) and the circular boss (433) are respectively positioned at the upper end and the lower end of the large screw rod (432); the large piston (41) is hinged to the circular boss (433) through a bearing (44), the large screw (432) is screwed on the inner wall thread (471) of the fixing ring (47), and the fixing ring (47) is fixed in the middle of the circular cylinder body (321);
step through holes (434) with large upper parts and small lower parts are formed in the driving part (43), second inner wall threads (435) are formed on the inner walls of the lower end small holes of the step through holes (434), small screw rods (45) are screwed on the second inner wall threads (435), the small pistons (42) are fixed at the lower ends of the small screw rods (45), hexagonal cylinders (46) are fixed at the upper ends of the small screw rods (45), and the hexagonal cylinders (46) are arranged in the upper end large holes of the step through holes (434).
2. A sampling device for a reaction vessel according to claim 1, wherein: the side wall of the bottle body part (32) is formed with a rectangular opening (322) communicated with the sampling cavity (301), a liquid viewing mirror (33) is connected in the rectangular opening (322) in a sealing mode, the inner wall of the liquid viewing mirror (33) is arc-shaped, and the inner wall of the liquid viewing mirror (33) is matched with the outer wall of the large piston (41).
3. A sampling device for a reaction vessel according to claim 1, wherein: a sealing groove is formed in the outer wall of the first piston (51), a sealing ring (57) is sleeved in the sealing groove, and the outer wall of the sealing ring (57) is pressed against the inner wall of the semicircular hole (201).
4. A sampling device for a reaction vessel according to claim 1, wherein: the first piston (51) is formed by molding a magnet, the outer wall of the sampling tube (2) is sleeved with a viewing ring (58), and the first piston (51) can drive the viewing ring (58) to slide left and right; a limiting block (59) is fixed on the outer wall of the sampling tube (2), the limiting block (59) is located between the pressure release valve (91) and the second stop valve (94), and the viewing position ring (58) is located between the limiting block (59) and the second stop valve (94).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810633936.6A CN108827709B (en) | 2018-06-20 | 2018-06-20 | A sampling device for reation kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810633936.6A CN108827709B (en) | 2018-06-20 | 2018-06-20 | A sampling device for reation kettle |
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| Publication Number | Publication Date |
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| CN108827709A CN108827709A (en) | 2018-11-16 |
| CN108827709B true CN108827709B (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810633936.6A Active CN108827709B (en) | 2018-06-20 | 2018-06-20 | A sampling device for reation kettle |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110658029A (en) * | 2019-11-20 | 2020-01-07 | 郎蕾 | Differential pressure type polyester resin sampling device |
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| US7418880B1 (en) * | 2004-12-13 | 2008-09-02 | Michael P Smith | Sample collector using a syringe with a side port in the barrel |
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| CN205384167U (en) * | 2016-02-26 | 2016-07-13 | 辽阳鑫宇化工有限公司 | Reaction kettle sampling device |
| CN206020085U (en) * | 2016-07-28 | 2017-03-15 | 中国石油天然气股份有限公司 | Sampling device and sampler comprising same |
| CN107091759A (en) * | 2017-05-19 | 2017-08-25 | 常熟市南湖化工设备制造有限责任公司 | A kind of reaction vessel vacuumizing method sampler |
| CN206470086U (en) * | 2017-01-22 | 2017-09-05 | 深圳市瑞晟新材料有限公司 | A kind of production of resins line conveyance conduit on-line period device |
| CN207018297U (en) * | 2017-03-28 | 2018-02-16 | 无锡市庚轩机械设备有限公司 | A kind of double-piston hydraulic oil cylinder |
| CN207181096U (en) * | 2017-07-17 | 2018-04-03 | 上海瑞农企业管理咨询有限公司 | A kind of suction type fast sampling instrument |
| CN207318166U (en) * | 2017-10-27 | 2018-05-04 | 廊坊金诺生物科技开发有限公司 | A kind of chemical reaction kettle material sampler |
-
2018
- 2018-06-20 CN CN201810633936.6A patent/CN108827709B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0028557A3 (en) * | 1979-11-06 | 1981-06-17 | Frederic Bourdon | Syringe functioning with the assistance of an external source of energy |
| US7418880B1 (en) * | 2004-12-13 | 2008-09-02 | Michael P Smith | Sample collector using a syringe with a side port in the barrel |
| CN104406821A (en) * | 2014-11-28 | 2015-03-11 | 重庆长风化学工业有限公司 | Sampling device for reaction kettle |
| CN204286859U (en) * | 2014-12-04 | 2015-04-22 | 武汉双虎涂料有限公司 | A kind of resin reaction kettle sampler |
| CN205384167U (en) * | 2016-02-26 | 2016-07-13 | 辽阳鑫宇化工有限公司 | Reaction kettle sampling device |
| CN206020085U (en) * | 2016-07-28 | 2017-03-15 | 中国石油天然气股份有限公司 | Sampling device and sampler comprising same |
| CN206470086U (en) * | 2017-01-22 | 2017-09-05 | 深圳市瑞晟新材料有限公司 | A kind of production of resins line conveyance conduit on-line period device |
| CN207018297U (en) * | 2017-03-28 | 2018-02-16 | 无锡市庚轩机械设备有限公司 | A kind of double-piston hydraulic oil cylinder |
| CN107091759A (en) * | 2017-05-19 | 2017-08-25 | 常熟市南湖化工设备制造有限责任公司 | A kind of reaction vessel vacuumizing method sampler |
| CN207181096U (en) * | 2017-07-17 | 2018-04-03 | 上海瑞农企业管理咨询有限公司 | A kind of suction type fast sampling instrument |
| CN207318166U (en) * | 2017-10-27 | 2018-05-04 | 廊坊金诺生物科技开发有限公司 | A kind of chemical reaction kettle material sampler |
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| CN108827709A (en) | 2018-11-16 |
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