Mother liquor sedimentation equipment for p-aminophenol production

Abstract

The utility model relates to the technical field of chemical machinery, in particular to mother liquor sedimentation equipment for p-aminophenol production, which comprises a pressurizing cylinder, a separating cylinder, a pressurizing mechanism and a separating mechanism, the pressurizing cylinder is hermetically connected with the separating cylinder through a bolt, a mounting ring is arranged in the separating cylinder, the separating mechanism is arranged on the mounting ring, the pressurizing mechanism is arranged in the pressurizing cylinder, and the separating mechanism is arranged on the separating cylinder. The separation mechanism is pressurized; the separation mechanism comprises a separation ring and a filter membrane, the filter membrane is arranged at the bottom of the separation ring, the separation ring is arranged on the mounting ring, positioning blocks are arranged on the two sides of the separation ring, positioning grooves are formed in the two sides of the mounting ring, and the positioning blocks are matched with the positioning grooves; clamping blocks are arranged on the side walls of the positioning blocks, springs are connected into the clamping blocks and the positioning blocks, clamping grooves are formed in the side walls of the positioning grooves, and the clamping blocks are matched with the clamping grooves. According to the utility model, the mother liquor can be quickly settled and separated, meanwhile, the separation stability is improved, the loosening or shifting phenomenon of the separation ring in the pressurizing process is avoided, and the settling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical machinery, in particular to mother liquor sedimentation equipment for the production of p-aminophenol. Background Art

[0002] p-Aminophenol is a fine organic chemical intermediate currently widely used in my country. In the dye industry, it is used to synthesize Weak Acid Yellow 6G, Weak Acid Light Yellow 5G, Sulfur Dark Blue 3R, Sulfur Blue CV, Sulfur Brilliant Green GB, Sulfur Red Brown B3R, and Sulfur Vat Black CLG. In the pharmaceutical industry, p-aminophenol is used to synthesize paracetamol and clofibrate, and is also used to prepare developers, antioxidants, and petroleum additives.

[0003] In the para-aminophenol production process, after crystallization, the crystallization liquid is placed in a centrifuge for solid-liquid separation, with the liquid mother liquor flowing directly out of the mother liquor tank. However, due to the centrifuge's filter cloth holes or excessively high feed rates, the mother liquor discharged from the centrifuge also contains para-aminophenol solids. This solid material is directly discharged and cannot be recovered, resulting in product loss. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a mother liquor sedimentation device for the production of p-aminophenol. A pressurizing mechanism applies pressure to the mother liquor in a separation cylinder. Due to the pore size design and material selection of the filter membrane, solid particles and impurities in the mother liquor are retained by the filter membrane, achieving sedimentation and separation of the mother liquor. Furthermore, the fit of the positioning block and the positioning groove, as well as the locking of the clamping block and the clamping groove, ensure the stability and accuracy of the separation ring on the mounting ring, avoid loosening or displacement that may occur during the pressurization process, and improve sedimentation efficiency.

[0005] To achieve the above-mentioned purpose, according to the embodiment of the first aspect of the present utility model, a mother liquor sedimentation equipment for the production of para-aminophenol is proposed, including a pressure cylinder, a separation cylinder, a pressure mechanism and a separation mechanism, the pressure cylinder is bolt-sealed with the separation cylinder, a mounting ring is provided in the separation cylinder, the separation mechanism is provided on the mounting ring, the pressure mechanism is provided in the pressure cylinder, and the separation mechanism is pressurized; the separation mechanism includes a separation ring and a filter membrane, the filter membrane is provided at the bottom of the separation ring, the separation ring is provided on the mounting ring, positioning blocks are provided on both sides of the separation ring, positioning grooves are provided on both sides of the mounting ring, and the positioning blocks are adapted to the positioning grooves; a clamping block is provided on the side wall of the positioning block, the clamping block is connected to the inside of the positioning block with a spring, a clamping groove is provided on the side wall of the positioning groove, and the clamping block is adapted to the clamping groove.

[0006] As a further solution of the present invention: the pressurizing mechanism includes a telescopic motor, a telescopic rod and a pressurizing plate. The telescopic motor is arranged at the top of the pressurizing cylinder, and its output end passes through the top of the pressurizing cylinder and is connected to the telescopic rod. The pressurizing plate is arranged at the bottom of the telescopic rod.

[0007] As a further solution of the present invention: a slide groove is provided on the positioning block, a push rod is provided on the top of the clamping block, the push rod passes through the slide groove, and the push rod is slidably matched with the slide groove.

[0008] As a further solution of the present invention: a rounded corner is provided on the side of the card block facing the card slot.

[0009] As a further solution of the present invention: a limiting ring is provided in the pressurizing cylinder, and the limiting ring limits the pressurizing plate.

[0010] As a further solution of the present invention: an adjustment mechanism is provided on the side wall of the separation cylinder, and the adjustment mechanism includes a pressure-regulating tube and an air bag. One end of the pressure-regulating tube is connected to the interior of the separation cylinder and is located outside the filter membrane, and the other end of the pressure-regulating tube is connected to the air bag.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model ensures the stability and accuracy of the separation ring on the mounting ring through the adaptation of the positioning block and the positioning groove, and the locking of the clamping block and the clamping groove, avoids the loosening or displacement that may occur during the pressurization process, and improves the sedimentation efficiency.

[0013] 2. When the separation ring of the utility model needs to be disassembled, the operator only needs to pull the push rod, and the pull rod moves along the slide groove, driving the card block to compress the spring, shrinking it to the inside of the positioning block and disengaging it from the card groove. Then, the separation ring is pulled upward to take out the filter membrane and clean the sediment.

[0014] 3. The utility model can ensure stable pressurization by setting a pressure regulating tube and an air bag. Since the air bag is inelastic, it can expand or contract as the pressure in the separation bottle increases or decreases. There is no need to connect to the outside atmosphere, effectively ensuring a sterile environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of a mother liquor sedimentation device for the production of p-aminophenol.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the separation cylinder.

[0017] Figure 3 This is a schematic diagram of the separation mechanism installation.

[0018] Figure 4It is a schematic diagram of the three-dimensional structure of the separation mechanism.

[0019] Reference numerals in the figure: 1. Pressurizing cylinder; 11. Limiting ring; 2. Separating cylinder; 3. Mounting ring; 31. Positioning groove; 32. Clamping groove; 4. Separating ring; 41. Positioning block; 411. Slide groove; 42. Clamping block; 421. Fillet; 43. Spring; 44. Push rod; 5. Filter membrane; 6. Telescopic motor; 61. Telescopic rod; 62. Pressurizing plate; 7. Pressure regulating tube; 71. Airbag. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figures 1 to 4 As shown, a mother liquor sedimentation equipment for the production of para-aminophenol includes a pressure cylinder 1, a separation cylinder 2, a pressure mechanism and a separation mechanism, the pressure cylinder 1 is bolted and sealed to the separation cylinder 2, a mounting ring 3 is provided in the separation cylinder 2, the separation mechanism is arranged on the mounting ring 3, the pressure mechanism is arranged in the pressure cylinder 1, and pressurizes the separation mechanism; the separation mechanism includes a separation ring 4 and a filter membrane 5, the filter membrane 5 is provided at the bottom of the separation ring 4, the separation ring 4 is arranged on the mounting ring 3, positioning blocks 41 are provided on both sides of the separation ring 4, positioning grooves 31 are provided on both sides of the mounting ring 3, and the positioning blocks 41 are adapted to the positioning grooves 31; a clamping block 42 is provided on the side wall of the positioning block 41, and a spring 43 is connected to the inside of the clamping block 41, and a clamping groove 32 is provided on the side wall of the positioning groove 31, and the clamping block 42 is adapted to the clamping groove 32.

[0022] First, the mother liquor is introduced into the pressurized cylinder 1 and falls into the filter membrane 5. At this time, the pressurizing mechanism starts to work and applies pressure to the mother liquor in the separation cylinder 2. Due to the pore size design and material selection of the filter membrane 5, the solid particles and impurities in the mother liquor are retained by the filter membrane 5, while the clear liquid continues to flow through the filter membrane 5, realizing the sedimentation and separation of the mother liquor.

[0023] By adapting the positioning block 41 to the positioning groove 31 and locking the clamping block 42 to the clamping groove 32, the stability and accuracy of the separation ring 4 on the mounting ring 3 are ensured, thereby avoiding loosening or displacement that may occur during the pressurization process and improving the sedimentation efficiency.

[0024] The pressurizing mechanism includes a telescopic motor 6, a telescopic rod 61, and a pressurizing plate 62. The telescopic motor 6 is mounted on top of the pressurizing cylinder 1, with its output end extending through the top of the pressurizing cylinder 1 and connected to the telescopic rod 61. The pressurizing plate 62 is mounted on the bottom of the telescopic rod 61. A limiting ring 11 is disposed within the pressurizing cylinder 1 to limit the position of the pressurizing plate 62.

[0025] When telescopic motor 6 is activated, it drives telescopic rod 61 downward, pressurizing the interiors of pressurizing cylinder 1 and separation cylinder 2. These cylinders are interconnected. As telescopic rod 61 continues to extend, pressure plate 62 applies increasing pressure to the mother liquor. This pressure forces the mother liquor through filter membrane 5 for sedimentation and separation. During the separation process, solid particles and impurities are retained by filter membrane 5, while clear liquid flows out through it.

[0026] A sliding groove 411 is provided on the positioning block 41 , and a push rod 44 is provided on the top of the clamping block 42 . The push rod 44 passes through the sliding groove 411 , and the push rod 44 and the sliding groove 411 are slidably engaged.

[0027] When the separation ring 4 needs to be removed, the operator only needs to pull the push rod 44, and the pull rod moves along the slide groove 411, driving the clamping block 42 to compress the spring 43, shrinking it to the inside of the positioning block 41, and disengaging from the clamping groove 32. Then, the separation ring 4 is pulled upward to remove the filter membrane 5 and clean the sediment.

[0028] A rounded corner 421 is provided on one side of the locking block 42 facing the locking slot 32 .

[0029] By providing the rounded corners 421 , the clamping block 42 can enter the clamping slot 32 more smoothly, thereby reducing the possibility of obstruction or damage caused by sharp edges.

[0030] The side wall of the separation cylinder 2 is provided with an adjustment mechanism, which includes a pressure-regulating tube 7 and an air bag 71. One end of the pressure-regulating tube 7 is connected to the interior of the separation cylinder 2 and is located outside the filter membrane 5. The other end of the pressure-regulating tube 7 is connected to the air bag 71.

[0031] By setting up the pressure regulating tube 7 and the air bag 71, the pressurization can be ensured to be stable. Since the air bag 71 is inelastic, it can expand or contract as the pressure in the separation bottle increases or decreases. There is no need to connect to the outside atmosphere, effectively ensuring a sterile environment.

[0032] The working principle of the present utility model is as follows: the mother liquor is first introduced into the pressurizing cylinder 1 and falls onto the filter membrane 5 supported by the separation ring 4. Subsequently, the pressurizing mechanism, which is composed of a telescopic motor 6 driving a telescopic rod 61 and a pressurizing plate 62, starts working, applying gradually increasing pressure to the inside of the pressurizing cylinder 1 and the separation cylinder 2 connected thereto. Under the action of pressure, the mother liquor is forced to pass through the filter membrane 5 for sedimentation and separation, wherein solid particles and impurities are retained by the filter membrane 5, while the clear liquid flows out smoothly. The separation ring 4 is precisely matched with the positioning groove 31 on the mounting ring 3 through the positioning block 41, and is locked by the card block 42 and the card groove 32 to ensure stability during the pressurization process. When it is necessary to clean the sediment on the filter membrane 5, the operator can pull the push rod 44 to disengage the card block 42 from the card groove 32, and easily disassemble the separation ring 4 and the filter membrane 5.

[0033] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A mother liquor sedimentation device for producing p-aminophenol, comprising a pressurizing cylinder (1), a separation cylinder (2), a pressurizing mechanism and a separation mechanism, wherein the pressurizing cylinder (1) is sealed with bolts to the separation cylinder (2), a mounting ring (3) is provided in the separation cylinder (2), the separation mechanism is provided on the mounting ring (3), and the pressurizing mechanism is provided in the pressurizing cylinder (1) to perform pressurizing operation on the separation mechanism; It is characterized in that The separation mechanism comprises a separation ring (4) and a filter membrane (5); the filter membrane (5) is provided at the bottom of the separation ring (4); the separation ring (4) is provided on the mounting ring (3); positioning blocks (41) are provided on both sides of the separation ring (4); positioning grooves (31) are provided on both sides of the mounting ring (3); the positioning blocks (41) are adapted to the positioning grooves (31); The side wall of the positioning block (41) is provided with a clamping block (42), the clamping block (42) and the interior of the positioning block (41) are connected with a spring (43), the side wall of the positioning slot (31) is provided with a clamping slot (32), and the clamping block (42) is adapted to the clamping slot (32).

2. A mother liquor sedimentation device for p-aminophenol production according to claim 1, characterized in that, The pressurizing mechanism comprises a telescopic motor (6), a telescopic rod (61) and a pressurizing plate (62); the telescopic motor (6) is arranged at the top of the pressurizing cylinder (1); the output end thereof passes through the top of the pressurizing cylinder (1) and is connected to the telescopic rod (61); the pressurizing plate (62) is arranged at the bottom of the telescopic rod (61).

3. A mother liquor sedimentation device for p-aminophenol production according to claim 1, characterized in that, A slide groove (411) is provided on the positioning block (41), and a push rod (44) is provided on the top of the clamping block (42). The push rod (44) passes through the slide groove (411), and the push rod (44) is slidably matched with the slide groove (411).

4. A mother liquor sedimentation device for p-aminophenol production according to claim 1, characterized in that, A rounded corner (421) is provided on one side of the clamping block (42) facing the clamping slot (32).

5. A mother liquor sedimentation device for p-aminophenol production according to claim 2, characterized in that, A limiting ring (11) is provided in the pressurizing cylinder (1), and the limiting ring (11) limits the pressurizing plate (62).

6. A mother liquor sedimentation device for p-aminophenol production according to claim 1, characterized in that, The side wall of the separation cylinder (2) is provided with an adjustment mechanism, which includes a pressure regulating tube (7) and an air bag (71). One end of the pressure regulating tube (7) is connected to the interior of the separation cylinder (2) and is located outside the filter membrane (5), and the other end of the pressure regulating tube (7) is connected to the air bag (71).

Images