Improved nitrogen pressurizing device for synthesizing durene through alkylation of unsym-trimethylbenzene and methanol

Abstract

The utility model discloses an improved nitrogen supercharging device for synthesizing durene through alkylation of unsym-trimethylbenzene and methanol, which relates to the field of piston type booster pumps and comprises a transverse pipe, a vertical pipe protruding upwards is integrally formed above the outer wall of the transverse pipe, and the inner wall of a top opening of the vertical pipe is in threaded connection with a threaded connector. The threaded connector penetrates to the position above the vertical pipe, a sealing ring is installed at the butt joint position of the vertical pipe and the threaded connector, a hydraulic push cylinder is installed at the top of the threaded connector through a flange piece, a piston plate is installed at the bottom end of a piston rod part of the hydraulic push cylinder, and the hydraulic push cylinder is located in an inner cavity of the vertical pipe. One-way mechanisms are installed at the two ends of the inner wall of the transverse pipe. By arranging the one-way mechanism with the arc-shaped plate, the problem of abrasion caused by reciprocating motion of the ball sealer can be effectively solved, and the problem that the pressurizing effect is reduced further can be solved through the design of the one-way mechanism.

Description

Technical Field

[0001] This utility model relates to the field of piston-type booster pumps, specifically an improved nitrogen booster device for the synthesis of mesitylene from pseudotrimethylbenzene and methanol alkylation. Background Technology

[0002] In the reaction of pseudotrimethylbenzene and methanol alkylation to synthesize mesitylene, the nitrogen booster device typically consists of the following parts: nitrogen cylinder group, pressure reducing regulating valve, piston booster pump, pressure sensor and controller, etc.

[0003] In the existing technology, the piston booster pump has one-way mechanisms installed at both ends. One one-way mechanism is used for air intake and the other one-way mechanism is used for air exhaust. During long-term use of the one-way mechanism, the inner wall of the sliding hole and the outer wall of the sliding shaft of the sealing ball of the one-way mechanism will wear during the reciprocating sliding process, which will lead to air leakage and thus cause poor pressurization effect. Utility Model Content

[0004] The purpose of this invention is to provide an improved nitrogen pressurization device for the synthesis of mesitylene from pseudotrimethylbenzene and methanol by alkylation, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an improved nitrogen booster device for the synthesis of mesitylene from pseudotrimethylbenzene and methanol alkylation, comprising a horizontal pipe, an upwardly protruding vertical pipe integrally formed on the upper part of the outer wall of the horizontal pipe, a threaded connector threaded to the inner wall of the top opening of the vertical pipe, the threaded connector extending through to the top of the vertical pipe, a sealing valve installed at the mating position between the vertical pipe and the threaded connector, a hydraulic push cylinder mounted on the top of the threaded connector via a flange, a piston plate mounted on the bottom end of the piston rod of the hydraulic push cylinder, the hydraulic push cylinder being located in the inner cavity of the vertical pipe, and one-way mechanisms installed at both ends of the inner wall of the horizontal pipe, one of the one-way mechanisms being used for air intake and the other for air exhaust.

[0006] As a further embodiment of this utility model: one end of the inner wall of the horizontal tube is provided with an air inlet that cooperates with the one-way air inlet mechanism, and the other end of the inner wall of the horizontal tube is provided with an air outlet that cooperates with the one-way air outlet mechanism. A transition cone surface is formed at the connection between the air outlet and the inner wall of the horizontal tube.

[0007] As a further embodiment of this utility model: the one-way mechanism includes a fixed plate fixedly connected to the inner wall of the horizontal tube, a guide rod protruding axially fixedly installed at one end of the fixed plate, a sealing ball slidably connected to the outer wall of the guide rod, a spring abutting between the outer wall of the sealing ball and the fixed plate, and the spring being sleeved on the outer periphery of the guide rod.

[0008] As a further embodiment of this utility model: an arc-shaped plate is integrally formed at the end of the guide rod away from the fixed plate, and an arc surface that matches the outer wall of the sealing ball is formed on the side of the arc-shaped plate near the sealing ball, and a compression sealing element is installed on the arc surface of the arc-shaped plate.

[0009] As a further improvement of this utility model, the fixing plate has multiple air holes equidistantly spaced in the internal circumference.

[0010] As a further improvement of this utility model: the air inlet and air outlet are formed with a mating groove that matches the outer wall of the sealing ball at the docking position of the sealing ball, and a rubber seal is installed at the contact position between the mating groove and the sealing ball.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By setting up a one-way mechanism with an arc plate, the design of this one-way mechanism can effectively avoid the wear problem caused by the reciprocating movement of the sealing ball, which in turn leads to a decrease in the pressurization effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the unidirectional mechanism structure of this utility model.

[0016] In the diagram: 1. Horizontal pipe; 2. Vertical pipe; 3. Threaded connector; 4. Hydraulic push cylinder; 5. Piston plate; 6. Fixed plate; 7. Air outlet; 8. Air hole; 9. Guide rod; 10. Sealing ball; 11. Arc plate; 12. Spring; 13. Air inlet. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-3In this embodiment of the present invention, an improved nitrogen booster device for the synthesis of mesitylene from alkylation of pseudotrimethylbenzene and methanol includes a horizontal pipe 1. A vertical pipe 2 protruding upward is integrally formed on the upper part of the outer wall of the horizontal pipe 1. A threaded connector 3 is threadedly connected to the inner wall of the top opening of the vertical pipe 2. The threaded connector 3 extends through to the top of the vertical pipe 2. A sealing valve is installed at the mating position between the vertical pipe 2 and the threaded connector 3. A hydraulic push cylinder 4 is installed on the top of the threaded connector 3 through a flange. A piston plate 5 is installed at the bottom end of the piston rod of the hydraulic push cylinder 4. The hydraulic push cylinder 4 is located in the inner cavity of the vertical pipe 2. One-way mechanisms are installed at both ends of the inner wall of the horizontal pipe 1. One one-way mechanism is used for air intake, and the other one-way mechanism is used for air exhaust.

[0019] In this embodiment: First, the two ends of the horizontal pipe 1 are connected to the nitrogen delivery pipeline through flanges. Then, the valves of the two delivery pipelines are opened. At this time, the hydraulic push cylinder 4 is activated. The hydraulic push cylinder 4 drives the piston plate 5 to move up and down through its piston rod. During the upward movement of the piston plate 5, a negative pressure is formed. Under the negative pressure, the one-way mechanism for air intake is opened. At this time, nitrogen enters the interior of the horizontal pipe 1 through the delivery pipeline. Then, the hydraulic push cylinder 4 moves downward, driving the piston plate 5 to move downward. During this downward movement, the one-way mechanism for air intake is closed under pressure, while the one-way mechanism for air exhaust is open under pressure. Therefore, nitrogen is pressurized and delivered during the reciprocating up and down movement of the piston plate 5, and a one-way delivery effect is achieved.

[0020] When the piston plate 5 is damaged, the threaded connector 3 can be rotated to disassemble it. At this time, the hydraulic push cylinder 4 can be pulled upward. The upward movement of the hydraulic push cylinder 4 will drive the piston plate 5 out, and maintenance can be performed after it is out.

[0021] Please refer to this carefully. Figure 2 One end of the inner wall of the horizontal tube 1 is provided with an air inlet 13 that cooperates with the one-way air intake mechanism, and the other end of the inner wall of the horizontal tube 1 is provided with an air outlet 7 that cooperates with the one-way air exhaust mechanism. A transition cone surface is formed at the connection between the air outlet 7 and the inner wall of the horizontal tube 1.

[0022] In this embodiment, the design of the air inlet 13 and the air outlet 7 allows the horizontal pipe 1 to be connected to the inner wall of the nitrogen delivery pipeline. When nitrogen is discharged, the transition cone surface can reduce the resistance when nitrogen is discharged.

[0023] Please refer to this carefully. Figure 2 and Figure 3The one-way mechanism includes a fixed plate 6 fixedly connected to the inner wall of the horizontal tube 1. An axially protruding guide rod 9 is fixedly installed at one end of the fixed plate 6. A sealing ball 10 is slidably connected to the outer wall of the guide rod 9. A spring 12 abuts between the outer wall of the sealing ball 10 and the fixed plate 6. The spring 12 is sleeved on the outer periphery of the guide rod 9. An arc-shaped plate 11 is integrally formed at the end of the guide rod 9 away from the fixed plate 6. The side of the arc-shaped plate 11 close to the sealing ball 10 is formed with an arc surface that matches the outer wall of the sealing ball 10. A compression seal is installed on the arc surface of the arc-shaped plate 11. Multiple air holes 8 are equidistantly opened in the inner circumference of the fixed plate 6.

[0024] In this embodiment: During the upward movement of the piston plate 5, the one-way gas outlet mechanism, under negative pressure, causes its sealing ball 10 to move towards the vertical pipe 2. At this time, the sealing ball 10 moves along the outer wall of the guide rod 9, and the spring 12 connected to the sealing ball 10 is compressed. At this time, the air inlet 13 opens, and nitrogen enters the interior of the horizontal pipe 1 through the air inlet 13 and the air hole 8.

[0025] As the piston plate 5 moves downward, the aforementioned sealing ball 10 is reset under the elasticity of the spring 12. At the same time, under pressure, the aforementioned sealing ball 10 blocks the discharge end of the air inlet 13. Meanwhile, the sealing ball 10 of another one-way mechanism opens under the extrusion pressure. At this time, the other sealing ball 10 squeezes another spring 12, and the discharge end of the air outlet 7 opens, allowing nitrogen to enter the nitrogen output pipe after being pressurized.

[0026] It should be noted that the arc plate 11 can effectively cover and seal one end of the sealing ball 10, preventing air leakage caused by wear of the sliding hole of the sealing ball 10 during long-term sliding. The arc plate 11, together with the extrusion seal, can effectively ensure the sealing line at the contact position of the two, thereby extending the service life of the one-way mechanism.

[0027] Please refer to this carefully. Figure 3 At the junction of the air inlet 13, the air outlet 7 and the sealing ball 10, there is a mating groove that matches the outer wall of the sealing ball 10. A rubber seal is installed at the contact point between the mating groove and the sealing ball 10.

[0028] In this embodiment, the design of the mating groove allows the sealing ball 10 to be pressed against the mating groove when it is in the reset state. At this time, the rubber seal can ensure the sealing between the sealing ball 10 and the mating groove.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An improved nitrogen pressurization device for the alkylation synthesis of mesitylene from pseudotrimethylbenzene and methanol, comprising a horizontal pipe (1), characterized in that, A vertical tube (2) protruding upward is integrally formed on the upper part of the outer wall of the horizontal tube (1). A threaded connector (3) is threadedly connected to the inner wall of the top opening of the vertical tube (2). The threaded connector (3) extends through to the top of the vertical tube (2). A sealing valve is installed at the mating position between the vertical tube (2) and the threaded connector (3). A hydraulic push cylinder (4) is installed on the top of the threaded connector (3) through a flange. A piston plate (5) is installed at the bottom end of the piston rod of the hydraulic push cylinder (4). The hydraulic push cylinder (4) is located in the inner cavity of the vertical tube (2). One-way mechanisms are installed at both ends of the inner wall of the horizontal tube (1). One of the one-way mechanisms is used for air intake, and the other one-way mechanism is used for air exhaust.

2. The improved nitrogen pressurization device for the alkylation synthesis of mesitylene from pseudotrimethylbenzene and methanol according to claim 1, characterized in that, One end of the inner wall of the horizontal tube (1) is provided with an air inlet (13) that cooperates with the one-way air intake mechanism, and the other end of the inner wall of the horizontal tube (1) is provided with an air outlet (7) that cooperates with the one-way air outlet mechanism. A transition cone surface is formed at the connection between the air outlet (7) and the inner wall of the horizontal tube (1).

3. The improved nitrogen pressurization device for the alkylation synthesis of mesitylene from pseudotrimethylbenzene and methanol according to claim 2, characterized in that, The one-way mechanism includes a fixed plate (6) fixedly connected to the inner wall of the horizontal tube (1). An axially protruding guide rod (9) is fixedly installed at one end of the fixed plate (6). A sealing ball (10) is slidably connected to the outer wall of the guide rod (9). A spring (12) abuts between the outer wall of the sealing ball (10) and the fixed plate (6). The spring (12) is sleeved on the outer periphery of the guide rod (9).

4. The improved nitrogen pressurization device for the alkylation synthesis of mesitylene from pseudotrimethylbenzene and methanol according to claim 3, characterized in that, The guide rod (9) has an integrally formed arc plate (11) at one end away from the fixed plate (6). The side of the arc plate (11) close to the sealing ball (10) has an arc surface that matches the outer wall of the sealing ball (10), and a compression seal is installed on the arc surface of the arc plate (11).

5. The improved nitrogen pressurization device for the alkylation synthesis of mesitylene from pseudotrimethylbenzene and methanol according to claim 4, characterized in that, The fixing plate (6) has multiple air holes (8) evenly spaced in the circumferential direction inside.

6. The improved nitrogen pressurization device for the alkylation synthesis of mesitylene from pseudotrimethylbenzene and methanol according to claim 5, characterized in that, The air inlet (13), air outlet (7) and sealing ball (10) are connected by mating grooves that match the outer wall of the sealing ball (10), and a rubber seal is installed at the contact position between the mating groove and the sealing ball (10).

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