A separation device and separation method for preparing hydroxybenzoic acid

Abstract

The invention discloses a separation device and a separation method for preparing hydroxybenzoic acid, which are applied in the technical field of preparing hydroxybenzoic acid. The invention can adjust the volume of a single centrifugal material by adjusting the telescopic length of an electric telescopic cylinder. After the material to be separated is put into an injection tank through an external solvent supply pipe, a third electric control valve is opened, and the solvent falls into a main container tank through the injection pipe. The transmission shaft is driven to rotate by an external motor, and the transmission shaft can drive the main container tank to rotate through a transmission pulley to centrifuge the material inside the main container tank. The main container tank can rotate along the inside of an outer cylinder structure through a rotating frame, a sliding frame and a connecting rod. This arrangement can make the centrifugation exempt from an external container, and can directly access the external solvent and the discharge position, without the need for additional manual operation, thereby improving the degree of automation.

Description

Technical Field

[0001] The invention belongs to the technical field of hydroxybenzoic acid preparation, and particularly relates to a separation device and a separation method for hydroxybenzoic acid preparation. Background Art

[0002] Based on the process of preparing hydroxybenzoic acid, when the reagent after salting out is centrifuged by centrifugation, various situations may be encountered, but not limited to the following one. When preparing hydroxybenzoic acid, benzoic acid is mixed with concentrated sulfuric acid and caustic soda as main raw materials, and then the reagent is centrifuged after sulfidation and salting out, and then the mother liquor is treated for secondary separation and other processes, and finally dried;

[0003] In addition, the preparation of hydroxybenzoic acid is limited by the physical properties of the solvent. The effect of separation by centrifugal separation is better than that of other methods. However, the centrifugal separation equipment in the prior art can only separate the material together with the container. This method requires manual removal or insertion of the container before and after separation. The degree of automation is poor and additional manual operation is required. In addition, it may be difficult to control the amount of solvent input.

[0004] In view of the above-mentioned problems, we found that it is difficult for the existing separation device for the preparation of hydroxybenzoic acid to avoid the above problems at the same time. Even if it can be solved, it is necessary to process the materials through additional processes, and thus it is impossible to achieve the desired effect. Therefore, we propose a hydroxybenzoic acid preparation separation device that can control the amount of separated materials and can eliminate the need for a transport container. Summary of the invention

[0005] The object of the present invention is to provide a separation device and a separation method for preparing hydroxybenzoic acid, which have the advantages of being able to control the amount of material to be separated and being able to dispense with a transport container.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A separation device for preparing hydroxybenzoic acid, comprising an outer cylinder structure, a main body bracket is bolted to the surface of the outer cylinder structure, a perfusion component is arranged on the top of the outer cylinder structure, a centrifugal component is arranged on the inner side of the outer cylinder structure, and a discharge pipe is externally connected to the bottom of the centrifugal component;

[0007] The centrifuge assembly includes a main container tank, a plurality of sliding frames are bolted to the surface of the main container tank, a rotating frame is slidably connected to the outer side of the sliding frame, a connecting rod is bolted to the side of the rotating frame away from the sliding frame, and the connecting rod is bolted to the outer cylinder structure on the side away from the sliding frame, a first electrically controlled valve is bolted to the bottom of the main container tank, a rotating bottom tube is bolted to the bottom of the first electrically controlled valve, a connecting ring is rotatably connected to the outer side of the rotating bottom tube, the inner side of the connecting ring is rotatably connected to an external discharge pipe, and the top of the external discharge pipe is in contact with the rotating bottom tube.

[0008] By adopting the above technical scheme, an outer cylinder structure is set as a structural carrier, a main body bracket is set to support and place the outer cylinder structure, a centrifugal assembly is set to centrifugally separate the material solvent, a main container tank is set to place the centrifugally separated solvent, a rotating frame is set to cooperate with the sliding frame and the connecting rod, so that the main container tank can be rotated inside the outer cylinder structure, a first electrically controlled valve is set to control the discharge of the internal solvent, and a connecting ring is set to facilitate the connection between the rotating bottom tank and the external discharge pipe, so as to discharge the solvent after separation.

[0009] The present invention is further configured as follows: the main container tank is a high-strength container with an opening at the top and four branches at the bottom; the outer side of the main container tank is connected to a plurality of groups of connecting narrow tubes; and second electrically controlled valves are provided on both sides of the connecting narrow tubes.

[0010] By adopting the above technical solution, a container with four branches at the bottom is set as the main container tank, so that the separated solvent can be subjected to a force inclined at a vertical angle during centrifugation, so that the centrifugal separation effect is better. The second electrically controlled valve is set to facilitate the interconnection of the four branches of the main container tank after the separation is completed.

[0011] The present invention is further configured as follows: a support plate is bolted to the inner side of the outer cylinder structure, a transmission shaft is rotatably connected to the inner side of the support plate, the outer side of the transmission shaft is rotatably connected to the inner side of the top of the main container tank, a transmission pulley is bolted to the surface of the transmission shaft and the main container tank, the two transmission pulleys are connected by a transmission belt, and a motor is externally connected to the top of the transmission shaft.

[0012] By adopting the above technical solution, a support plate is set to cooperate with the transmission shaft and the transmission pulley. After the transmission shaft is connected to a motor, the motor drives the transmission shaft to rotate, so that the transmission belt is used between the transmission pulleys to drive the main container tank for centrifugal separation.

[0013] The present invention is further configured as follows: a carrier bracket is bolted to the inner side of the outer tube structure, the inner side of the carrier bracket is filled with foamed polyurethane material, the carrier bracket is bolted to a mica board close to the main container tank, and a heating wire is bolted to the side of the mica board away from the main container tank.

[0014] By adopting the above technical solution, a carrier bracket is provided in combination with a foamed polyurethane material to achieve a heat preservation effect. The emission wire is provided in combination with a mica plate to heat up the reaction position of the main container tank when the ambient temperature is too low.

[0015] The present invention is further configured as follows: the perfusion assembly includes an injection tank, the top of the injection tank is bolted with an electric telescopic cylinder, the telescopic end of the electric telescopic cylinder penetrates to the inner side of the injection tank and is bolted with a piston block, the inner side of the piston block is bolted with a one-way valve, the top of the one-way valve is externally connected to a solvent supply pipe, the solvent supply pipe penetrates the top of the injection tank, the bottom of the injection tank is bolted with a third electric-controlled valve, and the bottom of the third electric-controlled valve is bolted with an injection pipe.

[0016] By adopting the above technical solution, an injection tank is provided in conjunction with an electric telescopic cylinder and a piston block, and the volume of a single centrifugal material is adjusted by adjusting the telescopic length of the electric telescopic cylinder. After the material to be separated is put into the injection tank through an external solvent supply pipe, the third electric control valve is opened, and the solvent will fall into the interior of the main container tank through the injection pipe.

[0017] The present invention is further configured as follows: a sealing strip is bolted on the surface of the piston block, the surface of the sealing strip is in close contact with the injection tank, the piston block is an inverted cone that fits the bottom shape of the injection tank, and the top of the piston block is concave.

[0018] By adopting the above technical solution, the sealing between the piston block and the injection tank can be improved by setting a sealing strip. The concave setting can avoid compression on the external solvent supply pipe when the piston block rises and the external solvent supply pipe is not discharged from the injection tank in time.

[0019] The present invention is further configured as follows: a top frame is bolted to the surface of the injection tank, and the bottom of the top frame is bolted to the top of the outer cylinder structure.

[0020] By adopting the above technical solution and providing a top frame, the outer cylinder structure and the injection tank can be easily installed and supported.

[0021] The present invention is further configured as follows: a mounting plate is bolted to the outside of the top frame, an extraction pump is bolted to the top of the mounting plate, an extraction hose is bolted to the feed end of the extraction pump, and the extraction hose is located inside the main container tank.

[0022] By adopting the above technical solution, the installation plate is provided to facilitate the installation of the extraction pump, and the provided extraction hose can facilitate the extraction of the upper layer of solvent after separation inside the main container tank through the extraction pump.

[0023] The present invention is further configured as follows: an electric slide rail is bolted to the outer side of the mounting plate, a slider is slidably connected to the inner side of the electric slide rail, a pipe rack is bolted to the surface of the slider, and the inner side of the pipe rack is clamped to the extraction hose.

[0024] By adopting the above technical solution, by providing an electric slide rail and a slider, the height of the extraction hose inside the main container tank can be easily adjusted, so as to adjust the extraction position according to the amount of solvent after separation.

[0025] A separation method for preparing hydroxybenzoic acid comprises the following steps:

[0026] S1. The material to be separated is put into the bottom of the piston block through the external solvent supply pipe, so that the material is located inside the injection tank, and the volume of the single centrifugal material is adjusted by adjusting the telescopic length of the electric telescopic cylinder, and then the third electric control valve is opened, and the material falls into the main container tank through the injection pipe;

[0027] S2. The external motor drives the transmission shaft to rotate, and the transmission shaft drives the main container tank to rotate through the transmission pulley to centrifuge the material inside the main container tank. After the centrifugation is completed, the extraction pump extracts the upper layer of solvent through the extraction hose. After the first electric control valve is opened, the remaining solvent inside the main container tank will be discharged into the external discharge pipe through the rotating bottom pipe.

[0028] In summary, the present invention has the following beneficial effects:

[0029] 1. The volume of a single centrifugal material can be adjusted by adjusting the telescopic length of the electric telescopic cylinder. After the material to be separated is injected into the injection tank through the external solvent supply pipe, the third electric control valve is opened, and the solvent will fall into the main container tank through the injection pipe. The transmission shaft is driven to rotate by the external motor, and the transmission shaft can drive the main container tank to rotate through the transmission pulley to centrifuge the material inside the main container tank. The main container tank can rotate along the inside of the outer cylinder structure through the rotating frame, the sliding frame and the connecting rod. This setting can make the centrifugation exempt from the external container, and can directly access the external solvent and the discharge position, without the need for additional manual operation, thereby improving the degree of automation. After the centrifugal separation is completed, the first electric control valve is opened to discharge the solvent inside the main container tank into the external discharge pipe to discharge the device, and after the third electric control valve is opened, it falls into the main container tank through the injection pipe. The electric slide rail cooperates with the slider to facilitate the adjustment of the height of the extraction hose inside the main container tank. The setting of the filling component can control the amount of reagent input. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2It is a schematic diagram of the structure of the perfusion assembly of the present invention;

[0032] Figure 3 It is an external schematic diagram of the outer cylinder structure of the present invention;

[0033] Figure 4 It is a schematic diagram of the internal structure of the outer cylinder of the present invention;

[0034] Figure 5 It is a schematic diagram of the structure of the centrifugal assembly of the present invention;

[0035] Figure 6 It is a schematic diagram of the structure of the main container tank of the present invention;

[0036] Figure 7 It is a schematic diagram of the injection tank structure of the present invention;

[0037] Figure 8 It is a flow chart of the separation method of the present invention.

[0038] 1. The outer cylinder structure; 2. The main body bracket; 3. The perfusion assembly; 301. The injection tank; 302. The electric telescopic cylinder; 303. The piston block; 304. The one-way valve; 305. The third electric control valve; 306. The injection pipe; 4. The centrifugal assembly; 401. The main container tank; 402. The sliding frame; 403. The rotating frame; 404. The connecting rod; 405. The first electric control valve; 406. The rotating bottom pipe; 407. The connecting ring; 5. The connecting narrow tube; 6. The second electric control valve; 7. The support plate; 8. The transmission shaft; 9. The transmission pulley; 10. The carrier bracket; 11. The foamed polyurethane material; 12. The mica board; 13. The heating wire; 14. The sealing strip; 15. The top frame; 16. The mounting plate; 17. The extraction pump; 18. The extraction hose; 19. The pipe rack; 20. The electric slide rail; 21. The slider. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0040] Embodiment 1:

[0041] refer to Figure 1-6 , a separation device for preparing hydroxybenzoic acid, comprising an outer cylinder structure 1, a centrifugal assembly 4 is arranged inside the outer cylinder structure 1, and a discharge pipe is externally connected to the bottom of the centrifugal assembly 4;

[0042] The centrifugal assembly 4 includes a main container tank 401, a plurality of sliding frames 402 are bolted to the surface of the main container tank 401, a rotating frame 403 is slidably connected to the outer side of the sliding frame 402, a connecting rod 404 is bolted to the side of the rotating frame 403 away from the sliding frame 402, and the connecting rod 404 is bolted to the outer cylinder structure 1 on the side away from the sliding frame 402, a first electric control valve 405 is bolted to the bottom of the main container tank 401, a rotating bottom tube 406 is bolted to the bottom of the first electric control valve 405, a connecting ring 407 is rotatably connected to the outer side of the rotating bottom tube 406, and the inner side of the connecting ring 407 is connected to the external discharge The pipe is rotatably connected, the top of the external discharge pipe is in contact with the follow-rotating bottom pipe 406, and the centrifugal assembly 4 is set to centrifugally separate the material solvent. The main container tank 401 is used to place the centrifuged solvent. The rotating frame 403 can cooperate with the sliding frame 402 and the connecting rod 404 to facilitate the rotation of the main container tank 401 inside the outer cylinder structure 1. The first electrically controlled valve 405 is used to control the discharge of the internal solvent, and the connecting ring 407 can facilitate the connection between the follow-rotating bottom tank and the external discharge pipe to discharge the solvent after separation.

[0043] like Figure 6 As shown, the main container tank 401 is a high-strength container with an opening at the top and four branches at the bottom. The outer side of the main container tank 401 is connected to a plurality of groups of connecting narrow tubes 5, and second electrically controlled valves 6 are provided on both sides of the connecting narrow tubes 5. By setting a container with four branches at the bottom as the main container tank 401, the separated solvent can be subjected to a force inclined at a vertical angle during centrifugation, so that the centrifugal separation effect is better. The second electrically controlled valve 6 is provided to facilitate the interconnection of the four branches of the main container tank 401 after the separation is completed.

[0044] like Figure 5 As shown, a support plate 7 is bolted to the inner side of the outer cylinder structure 1, and a transmission shaft 8 is rotatably connected to the inner side of the support plate 7. The outer side of the transmission shaft 8 is rotatably connected to the inner side of the top of the main container tank 401. A transmission pulley 9 is bolted to the surface of the transmission shaft 8 and the main container tank 401. The two transmission pulleys 9 are connected through transmission belts. The top of the transmission shaft 8 is externally connected to a motor. The support plate 7 is arranged to match the transmission shaft 8 and the transmission pulley 9. After the transmission shaft 8 is externally connected to the motor, the motor drives the transmission shaft 8 to rotate, so that the transmission pulleys 9 are transmitted through the transmission belt to drive the main container tank 401 to perform centrifugal separation.

[0045] like Figure 5 As shown, a carrier bracket 10 is bolted to the inner side of the outer tube structure 1, and the inner side of the carrier bracket 10 is filled with foamed polyurethane material 11. The carrier bracket 10 is bolted to a mica board 12 close to the main container tank 401, and a heating wire 13 is bolted to the side of the mica board 12 away from the main container tank 401.

[0046] like Figure 5 As shown, by setting the carrier bracket 10 and the foamed polyurethane material 11, a heat preservation effect is achieved, and the emitting wire is set together with the mica board 12, so that the reaction position of the main container tank 401 can be heated when the ambient temperature is too low.

[0047] Brief description of the use process: the transmission shaft 8 is driven to rotate by an external motor, and the transmission shaft 8 can drive the main container tank 401 to rotate through the transmission pulley 9, so that the material inside the main container tank 401 is centrifuged. The main container tank 401 can rotate along the inside of the outer cylinder structure 1 through the rotating frame 403, the sliding frame 402 and the connecting rod 404, and play a supporting role. After the centrifugal separation is completed, the first electric control valve 405 is opened to discharge the solvent inside the main container tank to the external discharge pipe to discharge the device.

[0048] Embodiment 2:

[0049] refer to Figure 1-7 A separation device for preparing hydroxybenzoic acid includes an outer cylinder structure 1, a main body support 2 is bolted to the surface of the outer cylinder structure 1, a perfusion component 3 is arranged on the top of the outer cylinder structure 1, a centrifugal component 4 is arranged on the inner side of the outer cylinder structure 1, and a discharge pipe is externally connected to the bottom of the centrifugal component 4. The outer cylinder structure 1 is arranged as a structural carrier, the main body support 2 is arranged to support and place the outer cylinder structure 1, and the perfusion component 3 can facilitate the control of the solvent injection amount.

[0050] like Figure 2 As shown, the perfusion assembly 3 includes an injection tank 301, the top of the injection tank 301 is bolted with an electric telescopic cylinder 302, the telescopic end of the electric telescopic cylinder 302 penetrates to the inner side of the injection tank 301 and is bolted with a piston block 303, the inner side of the piston block 303 is bolted with a one-way valve 304, the top of the one-way valve 304 is externally connected to a solvent supply pipe, the solvent supply pipe penetrates the top of the injection tank 301, the bottom of the injection tank 301 is bolted with a third electric-controlled valve 305, and the bottom of the third electric-controlled valve 305 is bolted with an injection pipe 306. By arranging the injection tank 301 to cooperate with the electric telescopic cylinder 302 and the piston block 303, the telescopic length of the electric telescopic cylinder 302 is adjusted to adjust the volume of the single centrifugal material, after the material to be separated is put into the injection tank 301 through the external solvent supply pipe, the third electric-controlled valve 305 is opened, and the solvent will fall into the main container tank 401 through the injection pipe 306.

[0051] like Figure 2As shown, a sealing strip 14 is bolted to the surface of the piston block 303, and the surface of the sealing strip 14 is in close contact with the injection tank 301. The piston block 303 is an inverted cone that fits the bottom shape of the injection tank 301, and the top of the piston block 303 is concave. By setting the sealing strip 14, the sealing between the piston block 303 and the injection tank 301 can be improved. The concave setting can avoid compression on the external solvent supply pipe when the piston block 303 rises and the external solvent supply pipe is not discharged from the inside of the injection tank 301 in time.

[0052] like Figure 7 As shown, a top frame 15 is bolted to the surface of the injection tank 301 , and the bottom of the top frame 15 is bolted to the top of the outer cylinder structure 1 . By providing the top frame 15 , the outer cylinder structure 1 and the injection tank 301 can be easily installed and supported.

[0053] like Figure 7 As shown, a mounting plate 16 is bolted to the outside of the top frame 15, an extraction pump 17 is bolted to the top of the mounting plate 16, an extraction hose 18 is bolted to the feed end of the extraction pump 17, and the extraction hose 18 is located inside the main container tank 401. By providing the mounting plate 16, the extraction pump 17 can be easily installed, and the provided extraction hose 18 can facilitate the extraction of the upper layer solvent after separation inside the main container tank 401 through the extraction pump 17;

[0054] like Figure 7 As shown, the outer side of the mounting plate 16 is bolted with an electric slide rail 20, the inner side of the electric slide rail 20 is slidably connected with a slider 21, the surface of the slider 21 is bolted with a pipe rack 19, the inner side of the pipe rack 19 is clamped with the extraction hose 18, and by arranging the electric slide rail 20 in conjunction with the slider 21, the height of the extraction hose 18 inside the main container tank 401 can be easily adjusted, so as to adjust the extraction position according to the amount of solvent after separation.

[0055] Brief description of the usage process: The volume of a single centrifugal material can be adjusted by adjusting the telescopic length of the electric telescopic cylinder 302. After the material to be separated is injected into the injection tank 301 through the external solvent supply pipe, the third electric control valve 305 is opened, and the solvent will fall into the main container tank 401 through the injection pipe 306. After the third electric control valve 305 is opened, the solvent will fall into the main container tank 401 through the injection pipe 306. The electric slide rail 20 cooperates with the slider 21 to facilitate the adjustment of the height of the extraction hose 18 inside the main container tank 401, so as to adjust the extraction position according to the amount of solvent after separation.

[0056] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A separation device for preparing hydroxybenzoic acid, comprising an outer cylinder structure (1), Features: A main body bracket (2) is bolted to the surface of the outer cylinder structure (1), a perfusion assembly (3) is arranged on the top of the outer cylinder structure (1), a centrifugal assembly (4) is arranged on the inner side of the outer cylinder structure (1), and a discharge pipe is externally connected to the bottom of the centrifugal assembly (4); The centrifugal assembly (4) comprises a main container tank (401), a plurality of sliding frames (402) are bolted to the surface of the main container tank (401), a rotating frame (403) is slidably connected to the outer side of the sliding frame (402), a connecting rod (404) is bolted to the side of the rotating frame (403) away from the sliding frame (402), and the connecting rod (404) is bolted to the outer cylinder structure (1) on the side away from the sliding frame (402), a first electric control valve (405) is bolted to the bottom of the main container tank (401), a rotating bottom tube (406) is bolted to the bottom of the first electric control valve (405), a connecting ring (407) is rotatably connected to the outer side of the rotating bottom tube (406), the inner side of the connecting ring (407) is rotatably connected to an external discharge pipe, and the top of the external discharge pipe is in contact with the rotating bottom tube (406); The injection assembly (3) comprises an injection tank (301), the top of the injection tank (301) is bolted with an electric telescopic cylinder (302), the telescopic end of the electric telescopic cylinder (302) penetrates the inner side of the injection tank (301) and is bolted with a piston block (303), the inner side of the piston block (303) is bolted with a one-way valve (304), the top of the one-way valve (304) is externally connected to a solvent supply pipe, the solvent supply pipe penetrates the top of the injection tank (301), the bottom of the injection tank (301) is bolted with a third electric control valve (305), and the bottom of the third electric control valve (305) is bolted with an injection pipe (306); A sealing strip (14) is bolted to the surface of the piston block (303), the surface of the sealing strip (14) is in close contact with the injection tank (301), the piston block (303) is in an inverted cone shape that fits the bottom shape of the injection tank (301), and the top of the piston block (303) is concave; A top frame (15) is bolted to the surface of the injection tank (301), and the bottom of the top frame (15) is bolted to the top of the outer cylinder structure (1); A mounting plate (16) is bolted to the outside of the top frame (15), an extraction pump (17) is bolted to the top of the mounting plate (16), an extraction hose (18) is bolted to the feed end of the extraction pump (17), and the extraction hose (18) is located inside the main container tank (401); An electric slide rail (20) is bolted to the outside of the mounting plate (16), a slider (21) is slidably connected to the inside of the electric slide rail (20), a pipe rack (19) is bolted to the surface of the slider (21), and the inside of the pipe rack (19) is clamped to the extraction hose (18).

2. A separation device for preparing hydroxybenzoic acid according to claim 1, Features: The main container tank (401) is a high-strength container with an opening at the top and four branches at the bottom. The outside of the main container tank (401) is connected to a plurality of groups of connecting narrow tubes (5), and second electric control valves (6) are arranged on both sides of the connecting narrow tubes (5).

3. A separation device for preparing hydroxybenzoic acid according to claim 1, Features: A support plate (7) is bolted to the inner side of the outer cylinder structure (1), a transmission shaft (8) is rotatably connected to the inner side of the support plate (7), the outer side of the transmission shaft (8) is rotatably connected to the inner side of the top of the main container tank (401), a transmission pulley (9) is bolted to the surface of the transmission shaft (8) and the main container tank (401), the two transmission pulleys (9) are connected by a transmission belt, and the top of the transmission shaft (8) is externally connected to a motor.

4. A separation device for preparing hydroxybenzoic acid according to claim 1, Features: A carrier bracket (10) is bolted to the inner side of the outer cylinder structure (1), the inner side of the carrier bracket (10) is filled with a foamed polyurethane material (11), a mica plate (12) is bolted to the carrier bracket (10) close to the main container tank (401), and a heating wire (13) is bolted to the side of the mica plate (12) away from the main container tank (401).

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