Reactor oxidizing agent adding conversion connecting device for manufacturing 2-chloronicotinic acid

Abstract

The utility model discloses a reactor oxidant adding conversion connecting device for manufacturing 2-chloronicotinic acid, which comprises a transition main tank body, feeding through holes are formed in the left part, the right part, the front part and the rear part of a top plate of the transition main tank body, and feeding connecting pipes are fixed on the top surface of the top plate of the transition main tank body corresponding to the feeding through holes; the feeding connecting pipes are aligned and communicated with the corresponding feeding through holes, a horizontal partition plate is fixed to the inner side wall of the upper portion of the transition main tank body, and through holes are formed in the positions, opposite to the feeding through holes, of the horizontal partition plate; a motor fixing frame is fixed to the middle of the top face of a top plate of the transition main tank body, and a rotary servo motor is fixed to the top face of a top plate of the motor fixing frame. The device can be installed on an oxidizing agent feeding port of a reactor, different oxidizing agents can be switched for adding and using according to needs, repeated disassembly is not needed, and the device is very convenient and good in using effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical equipment technical field more specifically, it is a kind of reactor and oxidizing agent conversion connecting device for 2-chloronicotinic acid manufacturing. BACKGROUND

[0002] 2-chloronicotinic acid is a white crystalline solid, odorless, slightly sour, because its molecular structure contains chlorine atom, with strong bactericidal and antibacterial effect, is widely used in pharmaceutical field.2-chloronicotinic acid is mainly used for synthesizing new high-efficiency herbicide such as nicosulfuron, difenzoquat and fungicide rynaxapyr in pesticide field, these pesticide varieties are environment-friendly, have occupied dominant position in global market.2-chloronicotinic acid is used for synthesizing various drugs in pharmaceutical field, including anti-aids drug nivela ping, antidepressant drug mizapine, non-steroidal anti-inflammatory analgesic drug niflumic acid, pralofen etc.In addition, 2-chloronicotinic acid is also used for synthesizing other pharmaceutical intermediates, such as nicomol etc.

[0003] Now 2-chloro-3-aldehyde pyridine is used as raw material, and 2-chloronicotinic acid is synthesized by oxidation.

[0004]

[0005] Now, various oxidizing agents such as hydrogen peroxide, sodium hypochlorite and persulfate need to be screened to realize continuous flow oxidation process, which is carried out in a reactor, and an oxidizing agent feeding port is arranged in the reactor, different oxidizing agents need to be added to realize reaction, and it is necessary to check which oxidizing agent is suitable, the existing mode is that the corresponding oxidizing agent discharge head is connected to the oxidizing agent feeding port of the reactor one by one manually, and the addition of oxidizing agent is carried out, and each time a kind of oxidizing agent is changed, the oxidizing agent discharge head needs to be disassembled from the oxidizing agent feeding port of the reactor, and then, it is reinstalled, and it is very troublesome to disassemble and install for many times, and the effect is poor. UTILITY MODEL CONTENTS

[0006] The utility model aims at overcoming the insufficient of prior art, provide a kind of reactor and oxidizing agent conversion connecting device for 2-chloronicotinic acid manufacturing, it can be installed on the oxidizing agent feeding port of reactor, it can switch different oxidizing agents for adding use according to need, it need not disassemble for many times, it is very convenient, and the use effect is good.

[0007] The utility model solves the technical problem of the scheme:

[0008] The utility model relates to a kind of 2-chloronicotinic acid manufacturing reactor oxidant conversion connecting device, including transition main tank body, the top plate of the left part, right part, front and rear of the transition main tank body are shaped with feeding through-hole, feeding connecting pipe is fixed on the top surface of the top plate of the transition main tank body corresponding to feeding through-hole, feeding connecting pipe is aligned with corresponding feeding through-hole and communicates, horizontal partition plate is fixed on the upper part of the inner side wall of the transition main tank body, and the position of horizontal partition plate is shaped with through-hole to feeding through-hole;

[0009] The top surface middle part of the top plate of the transition main tank body is fixed with motor fixing frame, the top surface of the top plate of motor fixing frame is fixed with rotating servo motor, the bottom end of the output shaft of rotating servo motor extends out the bottom surface of the top plate of motor fixing frame and is connected with vertical rotating shaft through shaft coupling, the bottom of vertical rotating shaft extends out the bottom surface of the top plate of the transition main tank body and is fixed with horizontal rotating plate, the bottom surface of horizontal rotating plate is close to the top surface of horizontal partition plate, and the edge of horizontal rotating plate is shaped with blanking through-hole, and blanking through-hole corresponds with all through-holes;

[0010] The bottom plate of the transition main tank body is connected with downwardly-extending discharging connecting head.

[0011] The top surface edge of the horizontal rotating plate is fixed with annular elastic sealing pad, and the top surface of annular elastic sealing pad is close to the bottom surface of the top plate of the transition main tank body, and one discharging through-hole is formed on the annular elastic sealing pad, and the discharging through-hole corresponds with all feeding through-holes, and the discharging through-hole is communicated with blanking through-hole and is aligned.

[0012] The bottom end of the discharging connecting head is connected with discharging electromagnetic valve.

[0013] The utility model discloses a kind of 2-chloronicotinic acid manufacturing reactor oxidant conversion connecting device, including transition main tank body, the top plate of the left part, right part, front and rear of the transition main tank body are shaped with feeding through-hole, feeding connecting pipe is fixed on the top surface of the top plate of the transition main tank body corresponding to feeding through-hole, feeding connecting pipe is aligned with corresponding feeding through-hole and communicates, horizontal partition plate is fixed on the upper part of the inner side wall of the transition main tank body, and the position of horizontal partition plate is shaped with through-hole to feeding through-hole;

[0014] Compared with prior art, it can be installed on the oxidant feeding port of reactor, which can switch different oxidants for adding according to needs, without multiple disassembly, very convenient, and good use effect. ACCURACY OF DRAWINGS:

[0015] Figure 1 It is the partial structure schematic view of the utility model;

[0016] Figure 2 It is Figure 1 Partial enlarged view of

[0017] Figure 3 It is the top view of the top plate of the transition main tank body;

[0018] Figure 4 It is the partial sectional view of shaft coupling. DETAILED DESCRIPTION:

[0019] Embodiment, see as Figures 1 to 4As shown, a kind of reactor and oxidizing agent conversion connecting device for 2-chloronicotinic acid manufacturing includes transition main tank body 10, the left part, right part, front and rear of the top plate of the transition main tank body 10 are shaped with feeding through hole 11, the top surface of the top plate of the transition main tank body 10 corresponding feeding through hole 11 is fixed with feeding connecting pipe 12, feeding connecting pipe 12 is aligned with corresponding feeding through hole 11 and communicates, the upper inner side wall of transition main tank body 10 is fixed with horizontal partition plate 13, and the position of horizontal partition plate 13 corresponding feeding through hole 11 is shaped with through hole 131;The top surface between the connecting edge of the top of the lower tank body and the top plate of the transition main tank body 10 is clamped with sealing ring or sealing pad, and the bottom end surface edge of the feeding connecting pipe 12 is clamped with sealing ring or sealing pad between the top surface of the top plate of the transition main tank body 10.

[0020] The top surface middle part of the top plate of the transition main tank body 10 is fixed with motor fixing frame 20, the top surface of the top plate of motor fixing frame 20 is fixed with rotary servo motor 21, the bottom end of the output shaft of rotary servo motor 21 extends out of the bottom surface of the top plate of motor fixing frame 20 and is connected with vertical rotating shaft 22 through shaft coupling, the bottom of vertical rotating shaft 22 extends out of the bottom surface of the top plate of the transition main tank body 10 and is fixed with horizontal rotating plate 23, the bottom surface of horizontal rotating plate 23 is close to the top surface of horizontal partition plate 13, and the edge part of horizontal rotating plate 23 is shaped with blanking through hole 231, and blanking through hole 231 corresponds to all through holes 131;

[0021] The bottom plate of the transition main tank body 10 is connected with downward extending discharging connecting head 14.

[0022] Further, the top surface edge of the horizontal rotating plate 23 is fixed with annular elastic sealing pad 24, the top surface of annular elastic sealing pad 24 is close to the bottom surface of the top plate of the transition main tank body 10, an annular elastic sealing pad 24 is formed on the top surface of the annular elastic sealing pad 24, and the bottom surface of the annular elastic sealing pad 24 is close to the top surface of the top plate of the transition main tank body 10.

[0023] The middle bottom surface of the top plate of the transition main tank body 10 is fixed with annular ring 1, the bottom surface middle part of annular ring 1 is shaped with annular groove, sealing ring 2 is nested in the annular groove, the bottom surface of sealing ring 2 is close to the top surface of horizontal rotating plate 23, and the lower part of vertical rotating shaft 22 is inserted into annular ring 1.Sealing ring 2 and annular ring 1 realize sealing isolation for the lower part of vertical rotating shaft 22 and the outside, so that the outer side wall of the lower part of vertical rotating shaft 22 is not easily oxidized by oxidizing agent.

[0024] Further, the motor fixing frame 20 includes top plate, the bottom surface left part, right part, front and rear of the top plate are fixed with vertical leg 26, the bottom surface of vertical leg 26 is fixed on the top surface of the top plate of the transition main tank body 10, and each vertical leg 26 corresponds to the feeding through hole 11 in the corresponding direction;

[0025] The inner side wall of each vertical leg 26 is fixed with a proximity switch 3, and the side wall of the coupling of the top of the vertical rotating shaft 22 is fixed with an induction block 4 corresponding to the induction end of the proximity switch 3.

[0026] The outer side between the left side and the front side of the top plate of the motor fixing frame 20 is fixed with a limiting support leg 27, and the limiting support leg 27 is fixed with a second proximity switch 5, and the induction end of the second proximity switch 5 corresponds to the induction block 4.

[0027] The right side plate of the transition main tank body 10 is connected with a flushing connecting head 16, one side of the bottom plate of the transition main tank body 10 is formed with a drainage screw connecting hole, and the plug 17 is screwed in the drainage screw connecting hole. The flushing connecting head 16 communicates with the transition main tank body 10, and the outer end of the flushing connecting head 16 is connected with the electromagnetic valve 6. The electromagnetic valve 6 is connected with the corresponding water connecting pipe.

[0028] The bottom end of the discharge connecting head 14 is connected with a discharge electromagnetic valve 7.

[0029] All the electrical components of the embodiment are electrically connected with the control host through the electric connecting line, and are controlled to operate by the control host. The structure is conventional, and will not be described here in detail.

[0030] When the embodiment is used, the other end of the discharge electromagnetic valve 7 is connected with the oxidant feeding port of the reactor. The embodiment has four feeding connecting pipes 12, which can be respectively connected with hydrogen peroxide, sodium hypochlorite, persulfate and other four kinds of oxidant connecting pipes. The control valve needs to be installed at the oxidant connecting pipe.

[0031] Then, the horizontal rotating plate 23 can be horizontally rotated by rotating the servo motor 21, so that the feeding hole 231 is aligned with one of the through holes 131. At this time, the induction block 4 is close to the induction end of the corresponding proximity switch 3 to realize induction. At this time, the control valve at the corresponding oxidant connecting pipe is opened, so that the oxidant can enter the corresponding feeding connecting pipe 12, and then enter the transition main tank body 10. At the same time, the discharge electromagnetic valve 7 is opened, and the oxidant flows into the reactor to realize reaction.

[0032] When another kind of oxidant needs to be replaced, the discharge electromagnetic valve 7 is closed, the control valve of the corresponding oxidant connecting pipe is closed, the induction end of the second proximity switch 5 is close to the induction block 4 and induction is realized by rotating the servo motor 21. At this time, all the feeding holes 11 are covered by the annular elastic sealing gasket 24. Then, the electromagnetic valve 6 is opened, the plug 17 is opened, the water in the water connecting pipe is introduced, and then the water is discharged from the drainage screw connecting hole.

[0033] Then, the electromagnetic valve 6 is closed, the discharge electromagnetic valve 7 is opened, and the horizontal rotating plate 23 is horizontally rotated by rotating the servo motor 21, so that the blanking hole 231 is aligned with a corresponding one of the through holes 131, at this time, the induction block 4 is close to the induction end of the corresponding proximity switch 3, induction is realized, at this time, the control valve at the corresponding position of the oxidant connecting pipe is opened, so that the oxidant can enter the corresponding feed connecting pipe 12, then enter the transition main tank body 10, and then the oxidant flows into the reactor to realize reaction.

[0034] The oxidant of the feed can be switched and guided without disassembly, and the use effect is good.

[0035] Finally, it should be noted that the above embodiments are only more representative examples of the present application. Obviously, the present application is not limited to the above embodiments, and there can be many variations. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application should be considered as falling within the protection scope of the present application.

Claims

1. A reactor-oxidizing agent transfer connection device for 2-chloronicotinic acid production comprising a transition main tank (10), characterized in that: The left part, the right part, the front part and the back part of the top plate of the transition main tank body (10) are shaped with feeding through holes (11), the top surface of the top plate of the transition main tank body (10) is fixed with feeding connection pipes (12) corresponding to the feeding through holes (11), the feeding connection pipes (12) are aligned with and communicated with the corresponding feeding through holes (11), the upper inner side wall of the transition main tank body (10) is fixed with a horizontal partition plate (13), the horizontal partition plate (13) is shaped with through holes (131) at the position facing the feeding through holes (11); The top surface of the top plate of the transition main tank body (10) is fixed with a motor fixing frame (20) in the middle, the top surface of the top plate of the motor fixing frame (20) is fixed with a rotating servo motor (21), the bottom end of the output shaft of the rotating servo motor (21) extends out of the bottom surface of the top plate of the motor fixing frame (20) and is connected with a vertical rotating shaft (22) through a shaft coupling, the bottom of the vertical rotating shaft (22) extends out of the bottom surface of the top plate of the transition main tank body (10) and is fixed with a horizontal rotating plate (23), the bottom surface of the horizontal rotating plate (23) is close to the top surface of the horizontal partition plate (13), the edge part of the horizontal rotating plate (23) is shaped with blanking through holes (231), the blanking through holes (231) correspond to all the through holes (131); The bottom plate of the transition main tank body (10) is communicated with a downward extending discharging connection head (14).

2. A reactor to oxidizing agent transfer connection device for the production of 2-chloronicotinic acid according to claim 1, characterized in that: The top surface edge part of the horizontal rotating plate (23) is fixed with an annular elastic sealing gasket (24), the top surface of the annular elastic sealing gasket (24) is close to the bottom surface of the top plate of the transition main tank body (10), the annular elastic sealing gasket (24) is shaped with a discharging through hole (25), the discharging through hole (25) corresponds to all the feeding through holes (11), the discharging through hole (25) is communicated with and aligned with the blanking through holes (231) in the up and down direction.

3. A reactor plus oxidizing agent conversion connection device for the manufacture of 2-chloronicotinic acid according to claim 1, characterized in that: The middle bottom surface of the top plate of the transition main tank body (10) is fixed with an annular ring (1), the bottom surface of the annular ring (1) is shaped with an annular groove, a sealing ring (2) is nested in the annular groove, the bottom surface of the sealing ring (2) is close to the top surface of the horizontal rotating plate (23), the lower part of the vertical rotating shaft (22) is inserted into the annular ring (1).

4. A reactor plus oxidizing agent conversion connection device for the manufacture of 2-chloronicotinic acid according to claim 1, characterized in that: The bottom surface of the top plate of the motor fixing frame (20) is fixed with vertical supporting legs (26) in the left part, the right part, the front part and the back part, the bottom surface of the vertical supporting legs (26) is fixed on the top surface of the top plate of the transition main tank body (10), each vertical supporting leg (26) corresponds to the feeding through hole (11) in the corresponding direction; The inner side wall of each vertical supporting leg (26) is fixed with a proximity switch (3), the side wall of the shaft coupling of the top part of the vertical rotating shaft (22) is fixed with a sensing block (4), the sensing block (4) corresponds to the sensing end of the proximity switch (3).

5. A reactor plus oxidizing agent conversion connection device for the manufacture of 2-chloronicotinic acid according to claim 4, characterized in that: The outer side between the left side and the front side of the top plate of the motor fixing frame (20) is fixed with a limiting supporting leg (27), the limiting supporting leg (27) is fixed with a second proximity switch (5), the sensing end of the second proximity switch (5) corresponds to the sensing block (4).

6. A reactor plus oxidizing agent conversion connection device for the manufacture of 2-chloronicotinic acid according to claim 1, characterized by: The flush connecting head (16) is connected to the right side plate of the transition main tank body (10), a drain screw connecting through hole is formed on one side of the bottom plate of the transition main tank body (10), the plug (17) is screwed in the drain screw connecting through hole, the flush connecting head (16) communicates with the transition main tank body (10), and the outer end of the flush connecting head (16) is connected with the electromagnetic valve (6).

7. A reactor plus oxidizing agent conversion connection device for the manufacture of 2-chloronicotinic acid according to claim 1, characterized by: The bottom end of the discharge connecting head (14) is connected with the discharge electromagnetic valve (7).

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