CN114322521B

CN114322521B - 2-methyl-5-pyrazine carboxylic acid production is with filter cake stoving collection device

Info

Publication number: CN114322521B
Application number: CN202210249765.3A
Authority: CN
Inventors: 王祥; 杨松涛; 程大龙
Original assignee: Dongying Yaokang Medicine Technology Co ltd
Current assignee: Dongying Yaokang Medicine Technology Co ltd
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2022-06-10
Anticipated expiration: 2042-03-15
Also published as: CN114322521A

Abstract

The invention discloses a filter cake drying and collecting device for producing 2-methyl-5-pyrazine carboxylic acid, which relates to the field of filter cake drying and comprises a drying box, wherein through grooves are symmetrically formed in the outer part of the drying box, a plurality of turnover mechanisms and a plurality of sections of conveyor belts are assembled in the drying box, the turnover mechanisms and the sections of conveyor belts are distributed in a staggered manner, one sides of the turnover mechanisms are adjacent to the conveyor belts, buffer mechanisms are adjacently arranged at the other sides of the turnover mechanisms, clamping rods are symmetrically arranged in the drying box, mounting plates are slidably connected to the outer parts of the clamping rods, a positioning mechanism for separating filter cakes is arranged between the two mounting plates, guide plates are installed on the outer parts of the mounting plates, the adjustment of the intervals between the separation plates can be realized through the adjustment of the positions of the mounting plates in the positioning mechanism, and further the uniform separation of the filter cakes moving on the conveyor belts can be realized, the filter cake is convenient to collect through the collecting box.

Description

2-methyl-5-pyrazine carboxylic acid production is with filter cake stoving collection device

Technical Field

The invention relates to the technical field of filter cake drying, in particular to a filter cake drying and collecting device for 2-methyl-5-pyrazine carboxylic acid production.

Background

2-methyl-5-pyrazinecarboxylic acid is also known as 2-methyl-5-pyrazinoic acid, 5-methyl-2-pyrazinecarboxylic acid, 2-carboxy-5-methylpyrazine, 5-methylpyridine-2-carboxylic acid, 2-methylpiperazine-5-carboxylic acid, 2-methyl-5-pyrazinecarboxylic acid, 5-methyl-2-pyrazinecarboxylic acid, the CAS number is 5521-55-1, the molecular formula is C₆H₆N₂O₂The molecular weight is 138.12, the medicine belongs to a medical intermediate, is an intermediate of glipizide and an intermediate of a hypolipidemic drug acipimox (lexalipine), is stable at normal temperature and normal pressure, has light yellow crystals and a melting point of 166-169 ℃. It is required to be placed in a cool and dry place, sealed and stored.

Through retrieval, the invention patent with Chinese patent publication No. CN105021010A discloses a calcium hypochlorite filter cake drying device, which comprises a machine body, a fan at the upper end of the machine body, a control device outside the machine body, heating plates on the inner walls at the two sides of the machine body, and a conveying mesh belt at the lower end of the machine body, wherein a water tank with an upper end open and the surface area equivalent to that of the conveying mesh belt is arranged at the bottom of the conveying mesh belt, a plurality of suction nozzles are arranged at one side of the water tank close to the upper end, and each suction nozzle is connected with an air pump. The invention has the advantages and positive effects that: the water in the filter cake can be pumped away under the action of the air pump, and the filter cake is ventilated and dried, so that the filter cake can be dried uniformly and thoroughly.

However, in actual operation, the filter cake can only be dried by the cooperation of the fan and the heating device, but the side of the filter cake contacting with the conveyor belt is difficult to dry, so that the drying degree of the interior of the filter cake is inconsistent, and the separate collection of the dried filter cake is lacked, so that a filter cake drying and collecting device for 2-methyl-5-pyrazine carboxylic acid production is needed.

Disclosure of Invention

The invention aims to solve the problem that in the prior art, the contact surface of a filter cake and a conveyor belt is difficult to dry, so that the drying degree of the interior of the filter cake is inconsistent, and provides a filter cake drying and collecting device for producing 2-methyl-5-pyrazine carboxylic acid.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a 2-methyl-5-pyrazine carboxylic acid production is with filter cake stoving collection device, includes stoving case, fan and heating mechanism, the outside at the stoving case is installed to the fan, heating mechanism installs the inside at the stoving case, the outside symmetry of stoving case has been seted up and has been run through the groove, the inside of stoving case is equipped with a plurality of tilting mechanism and multistage conveyer belt, and the crisscross distribution of a plurality of tilting mechanism and multistage conveyer belt, and one side of tilting mechanism is adjacent with the conveyer belt, and the adjacent buffer gear that is provided with of opposite side of tilting mechanism, the inside symmetry of stoving case is installed the kelly, the outside sliding connection of kelly has the mounting panel, two be provided with between the mounting panel and be used for carrying out the positioning mechanism who divides the list to the filter cake, the externally mounted of mounting panel has the deflector.

Preferably, tilting mechanism comprises cylinder, flourishing silo and synchronizing shaft, the both sides of cylinder all coaxial coupling have the synchronizing shaft, just the cylinder passes through the synchronizing shaft and is connected, a plurality of with the stoving case rotation the synchronizing shaft passes through sprocket and chain cooperation and multistage conveyer belt linkage, flourishing silo has evenly been seted up to the surface of cylinder, the inner chamber wall in flourishing silo is the wedge.

Preferably, buffer gear is including supporting the box, the both sides of supporting the box are all fixed on the inner wall of stoving case, the inside swing joint that supports the box has the buffer board, and the bottom of buffer board is evenly fixed with a plurality of springs, just the other end of spring is fixed in the inner wall bottom that supports the box.

Preferably, the inside of supporting box is fixed with the cylinder, the inside sliding connection of cylinder has the piston, the axle center department of piston is fixed with the piston rod, just the piston rod is kept away from the one end of piston and the bottom fixed connection of buffer board, the externally mounted of cylinder has the blast pipe, the blast pipe runs through to the outside of supporting box, just the one end that the cylinder was kept away from to the blast pipe is oblate form and with the upper surface of buffer board pastes mutually.

The during operation, can carry out the shock attenuation to the vibrations that produce through the filter cake falls the outside in-process of buffer board through the spring, reduce the damage that the filter cake received, and strike the buffer board at the filter cake and make the in-process of buffer board downstream make the piston rod downstream, the piston rod drives the piston and moves down, thereby extrude the inside gas of cylinder, the inside extruded gas of process of cylinder can discharge through the blast pipe, thereby realize the gas shock of one side that contacts with the conveyer belt before the filter cake, and then increased the drying effect to the filter cake.

Preferably, a collecting box is installed outside the drying box, an inclined plate is installed inside the through groove close to the collecting box, one end, far away from the through groove, of the inclined plate is close to one section of the conveying belt, a discharge pipe is installed on one side, far away from the fan, of the drying box, and a base is installed outside the drying box.

Preferably, the positioning mechanism comprises a plurality of splitting plates arranged between the two mounting plates, and one side of each splitting plate, which is far away from the conveyor belt, is provided with a connecting shaft.

Preferably, a fixed shaft is installed on one side, close to the splitting plate, of the installation plate, an expansion bracket is connected to the outer portions of the two fixed shafts in a rotating mode, a middle shaft of the expansion bracket is connected with the connecting shaft in a rotating mode, two fixed rods are installed inside the drying box, and the two fixed rods penetrate through the installation plate and the splitting plate in sequence;

during operation, adjust through the filter cake size interval between two mounting panels, two mounting panels can make two expansion brackets start rotating at the in-process that removes, and the expansion bracket is adjusted the interval between division board and the mounting panel in the pivoted in-process realization, and then realizes adjusting the interval between two adjacent division boards, thereby the adjustment of interval can be arranged the filter cake between the division board for the filter cake after the stoving is arranged neatly.

Compared with the prior art, the invention has the beneficial effects that: the turnover mechanism is matched with the buffer mechanism, so that the filter cake is repeatedly turned and dried, and the drying degree of the interior of the filter cake is kept consistent;

the adjustment of the distance between the division plates can be realized by adjusting the position of the mounting plate in the positioning mechanism, so that the filter cakes moving on the conveying belt can be uniformly divided, and the filter cakes are conveniently divided and collected by the collecting box.

Drawings

FIG. 1 is a schematic view of the entire structure of the present invention;

FIG. 2 is a schematic sectional front view of the drying box of FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 4 is a first perspective view of the positioning mechanism of FIG. 2 according to the present invention;

FIG. 5 is a second perspective view of the positioning mechanism of FIG. 2 according to the present invention;

FIG. 6 is a schematic cross-sectional front view of the support cassette of FIG. 2 according to the present invention;

FIG. 7 is a schematic view of the drum of FIG. 2 according to the present invention;

FIG. 8 is an enlarged view of the structure at B in FIG. 4 according to the present invention.

In the figure: 1. a drying box; 2. a base; 3. a conveyor belt; 4. a fan; 5. a through groove; 6. a sloping plate; 7. a collection box; 8. a discharge pipe; 9. a heating mechanism; 10. a drum; 11. mounting a plate; 12. a material containing groove; 13. a synchronizing shaft; 14. a support box; 15. a buffer plate; 16. a clamping rod; 17. a telescopic frame; 18. a spring; 19. an exhaust pipe; 20. a cylinder barrel; 21. a piston; 22. a piston rod; 23. a guide plate; 24. fixing the rod; 25. a splitting plate; 26. a connecting shaft; 27. and fixing the shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-8, an embodiment of the present invention:

the utility model provides a 2-methyl-5-pyrazine carboxylic acid production is with filter cake stoving collection device, including stoving case 1, fan 4 and heating mechanism 9, fan 4 is installed in the outside of stoving case 1, heating mechanism 9 is installed in the inside of stoving case 1, the outside symmetry of stoving case 1 has been seted up and has been run through groove 5, the inside of stoving case 1 is equipped with a plurality of tilting mechanism and multistage conveyer belt 3, a plurality of tilting mechanism and the crisscross distribution of multistage conveyer belt 3, and one side of tilting mechanism is adjacent with conveyer belt 3, the filter cake sends into inside of stoving case 1 through conveyer belt 3, through fan 4 work air supply, blow on the filter cake after the wind heats through heating mechanism 9, dry the filter cake.

Conveyer belt 3 adopts traditional belt conveying, mainly by the deflector roll, servo motor and conveyer belt are constituteed, the deflector roll supports the conveyer belt both ends, servo motor drive deflector roll is rotatory, can drive the conveyer belt circulation and roll, only need a servo motor between the multistage conveyer belt 3, accessible sprocket chain cooperation interlock between the multistage conveyer belt 3, heating mechanism 9 can adopt the resistance wire heating, heating and transfer mode all are known public technology, do not do too much explanation here, consider that wind can be at stoving case 1 inner loop, the ventilation hole has evenly been seted up on the conveyer belt, do benefit to wind and pass through, and discharge from stoving case 1 bottom.

The adjacent buffer gear that is provided with of opposite side of tilting mechanism, the inside symmetry of stoving case 1 installs kelly 16, and kelly 16's outside sliding connection has mounting panel 11, is provided with between two mounting panels 11 to be used for carrying out the positioning mechanism who divides the row to the filter cake, and the externally mounted of mounting panel 11 has deflector 23.

Further, as shown in fig. 2, 3 and 7, the turnover mechanism is composed of a roller 10, a material containing groove 12 and a synchronizing shaft 13, both sides of the roller 10 are coaxially connected with the synchronizing shaft 13, and the roller 10 is rotatably connected with the drying box 1 through the synchronizing shaft 13, in order to match the conveying speeds of the plurality of rotating speed rollers 10 with the multi-section conveyor belts 3, the plurality of synchronizing shafts 13 are linked with the multi-section conveyor belts 3 through the cooperation of chain wheels and chains, the chain wheels are respectively arranged on a guide roller and the synchronizing shaft 13, both ends of the chains are sleeved on the two chain wheels, the proportion of the transmission speed is calculated as the known public technology, the material containing groove 12 is uniformly arranged on the outer surface of the roller 10, the inner cavity wall of the material containing groove 12 is wedge-shaped, so that the filter cake can be obliquely placed in the material containing groove 12 and is more stably placed, as shown in fig. 3, the filter cake is sent to the material containing groove 12 by the conveyor belts 3, and is rotated by the roller 10, the filter cake can fall on the buffer mechanism after turning over;

Furthermore, in order to make the filter cake smoothly slide from the material containing groove 12, the multi-section conveyor belt 3, the plurality of turnover mechanisms and the plurality of buffer mechanisms can be assembled in a height difference mode, so that the filter cake can smoothly fall into the buffer mechanisms by utilizing gravity, and the filter cake is not required to be driven by extra power to be discharged from the material containing groove 12.

Further, as shown in fig. 2, fig. 3 and fig. 6, buffer gear includes supporting box 14, both sides of supporting box 14 are all fixed on the inner wall of stoving case 1, the inside swing joint of supporting box 14 has buffer board 15, the bottom of buffer board 15 is evenly fixed with a plurality of springs 18, and the other end of spring 18 is fixed in the inner wall bottom of supporting box 14, buffer board 15 is the slope setting, the one end that is close to cylinder 10 is higher than the one end that is close to conveyer belt 3, be favorable to the filter cake to follow the landing on buffer board 15 to conveyer belt 3, the filter cake falls on buffer board 15, accessible spring 18 carries out the shock attenuation to the vibrations that produce, avoid the damage that the filter cake received. Because the influence of factors such as humidity, the quality of different filter cakes, when cylinder 10 rotated the filter cake that drives in holding trough 12 and rotated the upset, the filter cake probably just started to slide outside holding trough 12 from different heights, if not set up buffer gear, the filter cake directly on the landing conveyer belt 3, the condition of breaking into pieces just can appear in the filter cake that the part just started the landing from higher place, collected the influence that causes to subsequent filter cake. Therefore, the buffer mechanism provided here can avoid the occurrence of the above-described situation.

Further, as shown in fig. 2, 3 and 6, a cylinder 20 is fixed inside the support box 14, a piston 21 is slidably connected inside the cylinder 20, a piston rod 22 is fixed at the axial center of the piston 21, one end of the piston rod 22, which is far away from the piston 21, is fixedly connected with the bottom of the buffer plate 15, an exhaust pipe 19 is installed outside the cylinder 20, the exhaust pipe 19 penetrates through the outside of the support box 14, one end of the exhaust pipe 19, which is far away from the cylinder 20, is flat and round and is attached to the upper surface of the buffer plate 15, when the filter cake impacts the buffer plate 15, the piston rod 22 is moved downward in the process that the buffer plate 15 moves downward, the piston rod 22 drives the piston 21 to move downward, so as to extrude the gas inside the cylinder 20, the extruded gas inside the cylinder 20 can be discharged through the exhaust pipe 19, the filter cake is blown, and the filter cake is assisted to slide downward onto the conveyor belt 3, considering that the filter cake without drying contains moisture and has high viscosity, the installation inclination angle of the buffer mechanism can be increased.

Further, as shown in fig. 1 and 8, a collecting box 7 is installed outside the drying box 1, an inclined plate 6 is installed inside the through groove 5 close to the collecting box 7, one end of the inclined plate 6 far away from the through groove 5 is close to one section of the conveyor belt 3, a discharge pipe 8 is installed on one side of the drying box 1 far away from the fan 4, a base 2 is installed outside the drying box 1, and a positioning mechanism for separating filter cakes is arranged between the two mounting plates 11;

A guide plate 23 is arranged outside the mounting plates 11, the positioning mechanism comprises a plurality of splitting plates 25 arranged between the two mounting plates 11, and a connecting shaft 26 is arranged on one side of each splitting plate 25, which is far away from the conveyor belt 3;

the mounting panel 11 is close to one side of dividing the strake 25 and is installed fixed axle 27, and the outside of two fixed axles 27 rotates jointly and is connected with expansion bracket 17, rotates between axis department and the connecting axle 26 of expansion bracket 17 and is connected, and the internally mounted of stoving case 1 has two dead levers 24, and two dead levers 24 all run through mounting panel 11 and divide the strake 25 in proper order.

In this embodiment, during operation, a moist filter cake is conveyed by the conveyor belt 3, and each time the filter cake is conveyed to the position of the roller 10, the filter cake enters the material containing groove 12 under the pushing of inertia and the conveyor belt 3, and then the filter cake is driven to rotate together under the rotation of the roller 10, and after the roller 10 drives the filter cake to rotate by about 180 degrees, the filter cake slides downwards along a side wall of the material containing groove 12 in an inclined manner, at this time, the supporting box 14 beside the roller 10 is also obliquely arranged at the opening of the material containing groove 12, the filter cake sliding downwards slides onto the buffer plate 15 first, the buffer plate 15 is compressed by the impact force of the filter cake by the spring 18 to buffer the filter cake, and simultaneously the cylinder 20 is compressed by the piston rod 22, the cylinder 20 blows the air at the bottom of the cylinder to the filter cake through the exhaust pipe 19, so as to improve the drying efficiency of the filter cake, and finally, the filter cake slides downwards along the buffer plate 15 in an inclined manner to another conveyor belt 3, and the filter cake is conveyed and turned over by matching the conveyor belt 3 and the roller 10 for multiple times, so that the drying efficiency of the filter cake is accelerated, and meanwhile, after the filter cake is separated from the buffer plate 15, the buffer plate 15 recovers height under the action of the spring 18 to wait for caching the next filter cake.

When filter cakes are conveyed on the last conveyor belt 3 and pass through the mounting plates 11, the guide plates 23 can guide the filter cakes on the conveyor belts 3, the distance between the two mounting plates 11 is adjusted according to the size of the dried filter cakes, the two mounting plates 11 can enable the two telescopic frames 17 to start to rotate in the moving process, the telescopic frames 17 enable the connecting shaft 26 to start to move in the rotating process, the connecting shaft 26 moves to adjust the distance between the sorting plate 25 and the mounting plates 11, and the connecting shaft 26 is rotatably connected with the connecting shaft 26 at the middle shaft of the telescopic frame 17 and uniformly arranged outside the sorting plate 25, so that the distance between the two adjacent sorting plates 25 is adjusted;

the filter cakes can be arranged by adjusting the distance between the division plates 25, so that the dried filter cakes are arranged orderly.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a 2-methyl-5-pyrazine carboxylic acid production is with filter cake stoving collection device, includes stoving case (1), fan (4) and heating mechanism (9), fan (4) are installed in the outside of stoving case (1), heating mechanism (9) are installed in the inside of stoving case (1), its characterized in that, the outside symmetry of stoving case (1) has seted up and has run through groove (5), the inside of stoving case (1) is equipped with a plurality of tilting mechanism and multistage conveyer belt (3), a plurality of tilting mechanism and multistage conveyer belt (3) staggered distribution, and one side of tilting mechanism is adjacent with conveyer belt (3), the opposite side of tilting mechanism is adjacent is provided with buffer gear, the inside symmetry of stoving case (1) is installed kelly (16), the outside sliding connection of kelly (16) has mounting panel (11), a positioning mechanism for separating filter cakes is arranged between the two mounting plates (11), and a guide plate (23) is arranged outside the mounting plates (11); the turnover mechanism is composed of a roller (10), a material containing groove (12) and a synchronizing shaft (13), wherein the synchronizing shaft (13) is coaxially connected to two sides of the roller (10), the roller (10) is rotatably connected with the drying box (1) through the synchronizing shaft (13), the synchronizing shafts (13) are in linkage with the multi-section conveyor belt (3) through the matching of a chain wheel and a chain, the material containing groove (12) is uniformly formed in the outer surface of the roller (10), and the inner cavity wall of the material containing groove (12) is wedge-shaped; the buffer mechanism comprises a support box (14), two sides of the support box (14) are fixed on the inner wall of the drying box (1), a buffer plate (15) is movably connected inside the support box (14), a plurality of springs (18) are uniformly fixed at the bottom of the buffer plate (15), and the other ends of the springs (18) are fixed at the bottom of the inner wall of the support box (14); the inside of supporting box (14) is fixed with cylinder (20), the inside sliding connection of cylinder (20) has piston (21), the axle center department of piston (21) is fixed with piston rod (22), just the one end that piston (21) were kept away from in piston rod (22) and the bottom fixed connection of buffer board (15), the externally mounted of cylinder (20) has blast pipe (19), blast pipe (19) run through to the outside of supporting box (14), just one end that cylinder (20) were kept away from in blast pipe (19) is oblate and with the upper surface of buffer board (15) pastes mutually.

2. The filter cake drying and collecting device for the production of 2-methyl-5-pyrazine carboxylic acid as claimed in claim 1, wherein the drying box (1) is externally provided with a collecting box (7), the through groove (5) close to the collecting box (7) is internally provided with an inclined plate (6), the inclined plate (6) is far away from one end of the through groove (5) and one section of the conveyor belt (3) are close to each other, the drying box (1) is far away from one side of the fan (4) and is provided with a discharge pipe (8), and the drying box (1) is externally provided with a base (2).

3. The filter cake drying and collecting device for the production of 2-methyl-5-pyrazine carboxylic acid as claimed in claim 2, wherein the positioning mechanism comprises a plurality of alignment plates (25) arranged between two mounting plates (11), and a connecting shaft (26) is mounted on one side of the alignment plates (25) far away from the conveyor belt (3).

4. The filter cake drying and collecting device for the production of 2-methyl-5-pyrazine carboxylic acid as claimed in claim 3, wherein the mounting plate (11) is close to one side of the division plate (25) and is provided with a fixed shaft (27), two the outside of the fixed shaft (27) rotates jointly and is connected with an expansion bracket (17), the middle shaft of the expansion bracket (17) and the connecting shaft (26) are connected in a rotating manner, the drying box (1) is internally provided with two fixing rods (24), and the two fixing rods (24) sequentially penetrate through the mounting plate (11) and the division plate (25).