P-hydroxybenzaldehyde preparation device

Abstract

The utility model relates to the technical field of p-hydroxybenzaldehyde preparation devices, in particular to a p-hydroxybenzaldehyde preparation device which comprises a reaction kettle, a main body structure used for preparing p-hydroxybenzaldehyde is arranged on the reaction kettle, the main body structure comprises a kettle cover, the kettle cover is detachably connected to the reaction kettle, and the reaction kettle is connected with the reaction kettle. Four fixing blocks with L-shaped sections are fixedly connected to the kettle cover, sliding plates are slidably connected to the fixing blocks, the reaction kettle is sleeved with an installation ring, the installation ring abuts against the four sliding plates, four installation blocks are fixedly connected to the installation ring, two of the installation blocks are each slidably connected with a guide rod, and the guide rods are fixedly connected to the reaction kettle. The other two mounting blocks are each rotationally connected with a screw rod, the screw rods are in threaded connection with a connecting rod, and the connecting rods are fixedly connected to the reaction kettle; the kettle cover of the reaction kettle can be quickly opened through the opening and closing structure, so that the interior of the reaction kettle can be conveniently cleaned and maintained, and the use effect of the reaction kettle is improved.

Description

Technical Field

[0001] The utility model relates to a p-hydroxybenzaldehyde preparation device, in particular to a p-hydroxybenzaldehyde preparation device, belonging to the technical field of p-hydroxybenzaldehyde preparation devices. Background Art

[0002] p-Hydroxybenzaldehyde is an important intermediate for the synthesis of medicines, fragrances, and liquid crystal materials. With p-hydroxybenzaldehyde as a raw material, a series of medicines, pesticides, and fragrance products as well as a series of higher-level fine chemical products can be developed. When preparing p-hydroxybenzaldehyde, p-cresol is generally used as the main raw material. O2 or oxygen-containing air is introduced into a solution containing p-cresol, sodium hydroxide, methanol, and a metal catalyst for oxidation to prepare p-hydroxybenzaldehyde. The oxidation preparation reaction is generally carried out in a closed oxidation reactor.

[0003] However, in the conventional oxidation reactor, the reactor cover is fixed by bolts during use (the reactor reference patent publication number is the reactor in CN 208599737U). After a period of use, the reactor needs to have its internal components inspected and maintained, and the inner wall of the reactor needs to be cleaned. Opening and closing the reactor by bolts is troublesome, which affects the inspection and cleaning efficiency of the reactor. Utility Model Content

[0004] The purpose of the utility model is to provide a p-hydroxybenzaldehyde preparation device in order to solve the above problems, which can quickly open the lid of the reactor through the opening and closing structure, thereby facilitating the cleaning and maintenance of the interior of the reactor, thereby improving the use effect of the reactor.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a p-hydroxybenzaldehyde preparation device comprises a reactor, wherein the reactor is provided with a main structure for preparing p-hydroxybenzaldehyde, wherein the main structure comprises a reactor cover, wherein the reactor is detachably connected with the reactor cover, wherein the reactor cover is provided with an opening and closing structure, wherein the opening and closing structure comprises a fixed block, wherein the reactor cover is fixedly connected with four fixed blocks with L-shaped cross-sections, wherein the fixed block is slidably connected with a slide plate, wherein an outer sleeve of the reactor is provided with a mounting ring, wherein the mounting ring abuts against the four slide plates, wherein four mounting blocks are fixedly connected with the mounting ring, wherein two of the mounting blocks are respectively slidably connected with a guide rod, wherein the guide rod is fixedly connected with the reactor, and the other two mounting blocks are respectively rotatably connected with a screw rod, wherein the screw rod is threadedly connected with a connecting rod, wherein the connecting rod is fixedly connected with the reactor.

[0006] Preferably, the fixed block is slidably connected to a limit strip, the slide plate is provided with two limit slots, the limit strip is engaged with one of the limit slots, the limit strip is fixedly connected to an anti-slip block, the anti-slip block is slidably connected to the fixed block, and a first spring is fixedly connected between the anti-slip block and the fixed block.

[0007] Preferably, a pull rod with a T-shaped cross section is fixedly connected to the slide plate, and the cross section of the limit strip is an L-shaped structure.

[0008] Preferably, a rotating block is fixedly connected to the screw rod, the rotating block is rotationally connected to the mounting block, and a hand wheel is fixedly connected to the screw rod.

[0009] Preferably, the main structure also includes a connecting pipe, a connecting pipe is provided on the kettle cover, a feed pipe is provided on the kettle cover, the feed pipe is connected to the interior of the reactor, an exhaust pipe is provided on the kettle cover, the exhaust pipe is connected to the reactor, an air intake main pipe is provided inside the reactor, the connecting pipe is connected to the air intake main pipe, a plurality of main pipe nozzles are provided on the air intake main pipe, a plurality of air intake branch pipes are provided on the air intake branch pipes, a branch pipe nozzle is provided on the air intake branch pipe, a motor is fixedly connected to the bottom end of the reactor, the output end of the motor is fixedly connected to the air intake main pipe, a discharge pipe is provided at the bottom end of the reactor, and a plurality of air guide plates are fixedly connected to the interior of the reactor.

[0010] Preferably, the reactor is provided with an observation structure, the observation structure comprises an observation window, the reactor is provided with an observation window, a fixing bar is fixedly connected to the reactor, and a protective plate is slidably connected to the fixing bar.

[0011] Preferably, a clamping rod is slidably connected to the fixing bar, a clamping slot is provided on the protection plate, the clamping rod is engaged with the clamping slot, and a pulling block is fixedly connected to the clamping rod.

[0012] Preferably, the cross section of the protective plate is an L-shaped structure, the cross section of the clamping rod is a "cross"-shaped structure, and a second spring is fixedly connected between the clamping rod and the fixing bar.

[0013] Preferably, a support structure is provided on the reactor, and the support structure includes a fixing ring. Two fixing rings are provided on the outside of the reactor, and a protective rod is fixedly connected between the two fixing rings via nuts. Three support rods are fixedly connected to the fixing ring below, and support plates are fixedly connected to the support rods.

[0014] Preferably, the cross section between the support rod and the support sheet forms a T-shaped structure, and a plurality of through holes for installing bolts are provided in a circumferential array on the support sheet.

[0015] The beneficial effects of the utility model are as follows: a main structure for preparing p-hydroxybenzaldehyde is provided on the reactor, the main structure comprises a reactor cover, the reactor cover is detachably connected, four fixed blocks with L-shaped cross sections are fixedly connected to the reactor cover, a slide plate is slidably connected to the fixed block, a mounting ring is provided on the outer sleeve of the reactor, the mounting ring conflicts with the four slide plates, four mounting blocks are fixedly connected to the mounting ring, two of the mounting blocks are respectively slidably connected with a guide rod, the guide rod is fixedly connected to the reactor, and the other two mounting blocks are respectively rotatably connected with a screw rod, the screw rod is threadedly connected with a connecting rod, and the connecting rod is fixedly connected to the reactor; a hand wheel at the bottom of the mounting block is rotated, the hand wheel rotates to drive the screw rod to rotate, the screw rod rotates to drive the mounting ring to slide up and down on the guide rod, when the mounting ring slides upward, it no longer conflicts with the slide plate, and the slide plate can be pulled out at this time, and then the reactor cover and the fixed block are disassembled from the reactor, and then the interior of the reactor is maintained or cleaned; the reactor cover of the reactor can be quickly opened by the opening and closing structure, so as to facilitate the cleaning and maintenance of the interior of the reactor, thereby improving the use effect of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A shown;

[0018] Figure 3 for Figure 1 The enlarged structural diagram of part B is shown;

[0019] Figure 4 It is a schematic diagram of the connection structure between the mounting ring and the mounting block of the utility model;

[0020] Figure 5 It is a schematic diagram of the connection structure between the fixed block and the slide plate of the utility model;

[0021] Figure 6 for Figure 5 The enlarged structural diagram of the C part shown;

[0022] Figure 7 It is a schematic diagram of the connection structure between the clamping rod and the clamping slot of the utility model.

[0023] In the figure: 1. Reactor; 2. Main structure; 201. Reactor cover; 202. Connecting pipe; 203. Feed pipe; 204. Exhaust pipe; 205. Inlet main pipe; 206. Main nozzle; 207. Inlet branch pipe; 208. Branch nozzle; 209. Motor; 210. Discharge pipe; 211. Air guide plate; 3. Opening and closing structure; 301. Fixed block; 302. Slide plate; 303. Pull rod; 304. Limiting strip; 305. Limiting groove; 306. Anti-dropping block; 307. A spring; 308, mounting ring; 309, mounting block; 310, guide rod; 311, screw rod; 312, connecting rod; 313, hand wheel; 314, rotating block; 4, observation structure; 401, observation window; 402, fixing bar; 403, protective plate; 404, clamping rod; 405, clamping groove; 406, pulling block; 407, second spring; 5, supporting structure; 501, fixing ring; 502, supporting rod; 503, supporting sheet; 504, through hole; 505, protective rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-7 As shown, a p-hydroxybenzaldehyde preparation device includes a reactor 1, characterized in that: the reactor 1 is provided with a main structure 2 for preparing p-hydroxybenzaldehyde, the main structure 2 includes a reactor cover 201, the reactor 1 is detachably connected with the reactor cover 201, the reactor cover 201 is provided with an opening and closing structure 3, the opening and closing structure 3 includes a fixed block 301, the reactor cover 201 is fixedly connected with four L-shaped cross-section fixed blocks 301, the fixed block 301 is slidably connected with a slide plate 302, the outer sleeve of the reactor 1 is provided with a mounting ring 308, the mounting ring 308 and the four slide The plates 302 interfere with each other, and four mounting blocks 309 are fixedly connected to the mounting ring 308, two of which are slidably connected to a guide rod 310, and the guide rod 310 is fixedly connected to the reactor 1, and the other two mounting blocks 309 are rotatably connected to each other with a screw rod 311, and the screw rod 311 is threadedly connected to a connecting rod 312, and the connecting rod 312 is fixedly connected to the reactor 1. The lid 201 of the reactor 1 can be quickly opened by the opening and closing structure 3, so as to facilitate the cleaning and maintenance of the interior of the reactor 1, thereby improving the use effect of the reactor 1.

[0026] As a technical optimization solution of the utility model, a limiting strip 304 is slidably connected to the fixed block 301, and two limiting grooves 305 are provided on the slide plate 302. The limiting strip 304 is engaged with one of the limiting grooves 305, and an anti-slip block 306 is fixedly connected to the limiting strip 304. The anti-slip block 306 is slidably connected to the fixed block 301, and a first spring 307 is fixedly connected between the anti-slip block 306 and the fixed block 301. The slide plate 302 is limited by the limiting strip 304 to prevent the slide plate 302 from sliding when the mounting ring 308 applies pressure to the slide plate 302.

[0027] As a technical optimization solution of the utility model, a pull rod 303 with a T-shaped cross section is fixedly connected to the slide plate 302 , and the cross section of the limit strip 304 is an L-shaped structure, which facilitates pulling the slide plate 302 through the pull rod 303 .

[0028] As a technical optimization solution of the utility model, a rotating block 314 is fixedly connected to the screw rod 311, and the rotating block 314 is rotatably connected to the mounting block 309. A hand wheel 313 is fixedly connected to the screw rod 311, which facilitates the rotation of the screw rod 311 by the hand wheel 313 and the pressurization of the mounting ring 308 by the rotating block 314, thereby reducing the friction loss between the screw rod 311 and the mounting block 309.

[0029] As a technical optimization solution of the utility model, the main structure 2 also includes a connecting pipe 202, the kettle cover 201 is provided with a connecting pipe 202, the kettle cover 201 is provided with a feed pipe 203, the feed pipe 203 is connected to the inside of the reactor 1, the kettle cover 201 is provided with an exhaust pipe 204, the exhaust pipe 204 is connected to the reactor 1, the reactor 1 is provided with an air intake main pipe 205, the connecting pipe 202 is connected to the air intake main pipe 205, and the air intake main pipe 205 is provided with a plurality of main pipes The main air intake pipe 205 is provided with a plurality of branch air intake pipes 207, and the branch air intake pipe 207 is provided with a branch nozzle 208. The bottom end of the reactor 1 is fixedly connected with a motor 209, and the output end of the motor 209 is fixedly connected to the main air intake pipe 205. The bottom end of the reactor 1 is provided with a discharge pipe 210, and the interior of the reactor 1 is fixedly connected with a plurality of air guide plates 211. The main structure 2 accelerates the contact area between the liquid and oxygen in the reactor 1, thereby improving the preparation efficiency of p-hydroxybenzaldehyde.

[0030] As a technical optimization solution of the utility model, the reactor 1 is provided with an observation structure 4, and the observation structure 4 includes an observation window 401. The reactor 1 is provided with an observation window 401, and a fixing bar 402 is fixedly connected to the reactor 1, and a protective plate 403 is slidably connected to the fixing bar 402. The reaction conditions inside the reactor 1 can be intuitively observed through the observation structure 4.

[0031] As a technical optimization solution of the utility model, a clamping rod 404 is slidably connected to the fixed bar 402, a clamping slot 405 is provided on the protective plate 403, the clamping rod 404 and the clamping slot 405 are engaged with each other, and a pull block 406 is fixedly connected to the clamping rod 404; the cross-section of the protective plate 403 is an L-shaped structure, the cross-section of the clamping rod 404 is a "cross"-shaped structure, and a second spring 407 is fixedly connected between the clamping rod 404 and the fixed bar 402. The clamping rod 404 is used to limit the protective plate 403 to prevent the protective plate 403 from sliding and blocking the line of sight when observing the reaction inside the reactor 1 through the observation window 401.

[0032] As a technical optimization solution of the utility model, the reactor 1 is provided with a support structure 5, and the support structure 5 includes a fixing ring 501. Two fixing rings 501 are provided on the outside of the reactor 1, and a protective rod 505 is fixedly connected between the two fixing rings 501 by nuts. Three support rods 502 are fixedly connected to the fixing ring 501 below, and support plates 503 are fixedly connected to the support rods 502; the cross-section between the support rods 502 and the support plates 503 constitutes a T-shaped structure, and a plurality of through holes 504 for installing bolts are provided in a circular array on the support plates 503. The reactor 1 is supported by the support structure 5, thereby improving the stability of the reactor 1 during reaction.

[0033] When the utility model is in use, firstly, the bolts are passed through the through holes 504 on the support sheet 503, and then the bolts are tightened to fix the support sheet 503 and the support rod 502 to the ground, thereby fixing the fixing ring 501 and the reactor 1, avoiding the reactor 1 from shaking during the reaction, improving the reaction stability of the reactor 1, and effectively avoiding the collision of the reactor 1 through the design of multiple protection rods 505, while improving the overall stability of the reactor 1, and then the connecting pipe 202 on the reactor cover 201 is connected to the external air intake device, the feed pipe 203 is connected to the reaction raw material liquid inlet device, the exhaust pipe 204 is connected to the exhaust gas treatment device, the discharge pipe 210 is connected to the finished product subsequent treatment device, and then the motor 209 is started, and the motor 209 drives the air intake main pipe 20 5 rotates, oxygen in the connecting pipe 202 enters the air inlet main pipe 205 and is discharged through the main pipe nozzle 206, and part of the gas enters the air inlet branch pipe 207 on the air inlet main pipe 205 and is ejected through the branch pipe nozzle 208 on the air inlet branch pipe 207. An air guide plate 211 is also provided on the inner wall of the reactor 1. The multi-layer arrangement of the air inlet branch pipe 207 and the main pipe nozzle 206, the rotation of the air inlet main pipe 205 and the multi-layer arrangement of the air guide plate 211 greatly increase the contact area between oxygen and the raw materials prepared in the reactor 1, and improve the preparation efficiency of p-hydroxybenzaldehyde. When the interior of the reactor 1 needs to be maintained or cleaned, the hand wheel 313 at the bottom of the mounting block 309 can be rotated, and the rotation of the hand wheel 313 drives the screw 311 to rotate, and the screw 311 rotates. The movement drives the mounting ring 308 to slide up and down on the guide rod 310. When the mounting ring 308 slides upward, it no longer conflicts with the slide plate 302. At this time, the slide plate 302 can be pulled out, and the kettle cover 201 and the fixing block 301 are removed from the reactor 1. Then, the interior of the reactor 1 can be maintained or cleaned. When the kettle cover 201 needs to be installed, it is only necessary to buckle the kettle cover 201 on the reactor 1, and then slide all the slide plates 302 to the bottom end of the mounting ring 308, and then turn the hand wheel 313. The hand wheel 313 drives the screw rod 311 to rotate, thereby driving the mounting ring 308 to slide down and conflict with the slide plate 302, thereby driving the slide plate 302 to move downward, thereby driving the fixing block 301 and the kettle cover 201 to slide downward, thereby closing the reactor 1. The kettle cover 201 needs to pull the limiting strip 304 on the fixing block 301 before pulling the slide plate 302. The slide plate 302 can be pulled by the pull rod 303 only when the limiting strip 304 is no longer engaged with the limiting groove 305 on the slide plate 302. At the same time, when the limiting strip 304 slides, it will drive the anti-dropping block 306 to slide, and the first spring 307 is compressed. Therefore, when the slide plate 302 is adjusted to a suitable position, the limiting strip 304 is released. Under the reset action of the first spring 307, the limiting strip 304 will be re-engaged in another limiting groove 305, avoiding the free sliding of the slide plate 302. The mounting ring 308 is pressurized by the rotating block 314 to reduce the friction loss between the screw 311 and the mounting block 309. When it is necessary to observe the reaction situation inside the reactor 1,The pull block 406 on the fixing bar 402 can be pulled, and the pull block 406 drives the clamping rod 404 to move, and the second spring 407 is compressed, and the clamping rod 404 no longer engages with the clamping slot 405 on the protective plate 403. At this time, the protective plate 403 can be pulled to expose the observation window 401, and the reaction situation inside the reactor 1 can be observed through the observation window 401. When the observation is completed, the protective plate 403 is pushed back to the original position to effectively protect the observation window 401. After pushing it back to the original position, the pull block 406 is released, and under the reset action of the second spring 407, the clamping rod 404 is re-engaged in the clamping slot 405 to fix the protective plate 403.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A p-hydroxybenzaldehyde preparation device, comprising a reaction kettle (1), characterized in that: The reactor (1) is provided with a main structure (2) for preparing p-hydroxybenzaldehyde, wherein the main structure (2) comprises a reactor cover (201), the reactor cover (201) is detachably connected to the reactor (1), the reactor cover (201) is provided with an opening and closing structure (3), the opening and closing structure (3) comprises a fixing block (301), four fixing blocks (301) with L-shaped cross sections are fixedly connected to the reactor cover (201), a slide plate (302) is slidably connected to the fixing block (301), and a mounting ring (302) is sleeved on the outside of the reactor (1). 8), the mounting ring (308) is in conflict with the four slides (302), and the mounting ring (308) is fixedly connected with four mounting blocks (309), wherein two of the mounting blocks (309) are each slidably connected with a guide rod (310), and the guide rod (310) is fixedly connected to the reaction kettle (1), and the other two mounting blocks (309) are each rotatably connected with a screw rod (311), and the screw rod (311) is threadedly connected with a connecting rod (312), and the connecting rod (312) is fixedly connected to the reaction kettle (1).

2. A p-hydroxybenzaldehyde preparation device according to claim 1, characterized in that: The fixed block (301) is slidably connected to a limit strip (304), the slide plate (302) is provided with two limit slots (305), the limit strip (304) is engaged with one of the limit slots (305), an anti-slip block (306) is fixedly connected to the limit strip (304), the anti-slip block (306) is slidably connected to the fixed block (301), and a first spring (307) is fixedly connected between the anti-slip block (306) and the fixed block (301).

3. A p-hydroxybenzaldehyde preparation device according to claim 2, characterized in that: A pull rod (303) with a T-shaped cross section is fixedly connected to the slide plate (302), and the cross section of the limit strip (304) is an L-shaped structure.

4. A p-hydroxybenzaldehyde preparation device according to claim 1, characterized in that: A rotating block (314) is fixedly connected to the screw rod (311), the rotating block (314) is rotationally connected to the mounting block (309), and a hand wheel (313) is fixedly connected to the screw rod (311).

5. A p-hydroxybenzaldehyde preparation device according to claim 1, characterized in that: The main structure (2) further comprises a connecting pipe (202), the kettle cover (201) is provided with a connecting pipe (202), the kettle cover (201) is provided with a feeding pipe (203), the feeding pipe (203) is communicated with the interior of the reaction kettle (1), the kettle cover (201) is provided with an exhaust pipe (204), the exhaust pipe (204) is communicated with the reaction kettle (1), an air intake main pipe (205) is provided inside the reaction kettle (1), the connecting pipe (202) is communicated with the air intake main pipe (205), The air intake main pipe (205) is provided with a plurality of main pipe nozzles (206), the air intake main pipe (205) is provided with a plurality of air intake branch pipes (207), the air intake branch pipes (207) are provided with branch pipe nozzles (208), the bottom end of the reaction kettle (1) is fixedly connected to a motor (209), the output end of the motor (209) is fixedly connected to the air intake main pipe (205), the bottom end of the reaction kettle (1) is provided with a discharge pipe (210), and the interior of the reaction kettle (1) is fixedly connected to a plurality of air guide plates (211).

6. A p-hydroxybenzaldehyde preparation device according to claim 1, characterized in that: The reactor (1) is provided with an observation structure (4), the observation structure (4) comprising an observation window (401), the reactor (1) is provided with an observation window (401), the reactor (1) is fixedly connected to a fixing bar (402), and the fixing bar (402) is slidably connected to a protective plate (403).

7. A p-hydroxybenzaldehyde preparation device according to claim 6, characterized in that: The fixing bar (402) is slidably connected with a clamping rod (404), the protective plate (403) is provided with a clamping groove (405), the clamping rod (404) and the clamping groove (405) are clamped together, and the clamping rod (404) is fixedly connected with a pulling block (406).

8. A p-hydroxybenzaldehyde preparation device according to claim 7, characterized in that: The cross section of the protective plate (403) is an L-shaped structure, the cross section of the clamping rod (404) is a "cross"-shaped structure, and a second spring (407) is fixedly connected between the clamping rod (404) and the fixing bar (402).

9. A p-hydroxybenzaldehyde preparation device according to claim 1, characterized in that: The reactor (1) is provided with a support structure (5), the support structure (5) comprising a fixing ring (501), two fixing rings (501) are provided outside the reactor (1), a protection rod (505) is fixedly connected between the two fixing rings (501) via nuts, three support rods (502) are fixedly connected to the fixing ring (501) below, and support plates (503) are fixedly connected to the support rods (502).

10. A p-hydroxybenzaldehyde preparation device according to claim 9, characterized in that: The cross section between the support rod (502) and the support sheet (503) forms a T-shaped structure, and a plurality of through holes (504) for installing bolts are arranged in a circumferential array on the support sheet (503).

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