Nitrogen replacement device for protective atmosphere of reaction kettle

Abstract

The utility model discloses a reaction kettle protective atmosphere nitrogen replacement device which comprises a reaction kettle, a first connecting frame and a second connecting frame are installed on the two sides of the bottom end of the reaction kettle respectively, and the bottom end of the first connecting frame and the bottom end of the second connecting frame are fixedly connected with a nitrogen conveying piston pump and an air extraction piston pump respectively. And the air outlet ends of the nitrogen conveying piston pump and the air extraction piston pump are respectively connected with a nitrogen conveying pipe and an air outlet pipe. By arranging the nitrogen conveying piston pump and the air extraction piston pump, air extraction and nitrogen injection can be achieved at the same time, compared with an existing nitrogen replacement device, air extraction and nitrogen injection can be conducted synchronously, the two processes are conducted synchronously, and the nitrogen replacement efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitrogen replacement technical field, concretely relates to a kind of reaction kettle protective atmosphere nitrogen replacement device. BACKGROUND

[0002] Reaction kettle is the container with physical or chemical reaction. Through the structure design and parameter configuration of container, the heating, evaporation, cooling and low-speed mixing function required by process can be realized, which is widely used in petroleum, chemical, rubber, pesticide, dye, pharmaceutical, food and other fields.

[0003] In chemical reaction, most reactions are relatively sensitive to oxygen or moisture, for example: the reaction involving sodium hydride, moisture in air is easy to produce hydrogen gas;Grignard reagent involved in the reaction, air is relatively sensitive, easy to encounter moisture in air inactivation, or encounter oxygen to become phenol or alcohol;Catalytic hydrogenation reaction, hydrogen is a kind of extremely flammable and explosive gas, when the volume fraction in air is 4%-75%, it can cause explosion when encountering fire. Therefore, before the chemical reaction in the reaction kettle starts, the oxygen or moisture in the reaction kettle needs to be replaced by inert gas (commonly known as nitrogen or argon, taking nitrogen as an example), and the nitrogen replacement process is completed by nitrogen replacement device of reaction kettle.

[0004] The existing reaction kettle is first extracted from the air in the reaction kettle, and then nitrogen is injected for protection. The replacement process is divided into two stages, which takes a long time and has low replacement efficiency.

[0005] Therefore, how to provide a reaction kettle protective atmosphere nitrogen replacement device to solve the problems existing in the prior art is of great significance to its application. UTILITY MODEL CONTENT

[0006] Therefore, the purpose of the present application is to provide a reaction kettle protective atmosphere nitrogen replacement device to solve the problems.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A reaction kettle protective atmosphere nitrogen replacement device, comprising a reaction kettle, two sides of the bottom end of the reaction kettle are respectively provided with connecting frame one and connecting frame two, the bottom end of the connecting frame one and the connecting frame two is respectively fixedly connected with nitrogen gas delivery piston pump and air extraction piston pump, the gas outlet end of the nitrogen gas delivery piston pump and the air extraction piston pump is respectively connected with nitrogen gas delivery pipe and air outlet pipe, the gas outlet end of the nitrogen gas delivery pipe is connected to the top end of the reaction kettle, the gas outlet end of the nitrogen gas delivery pipe is provided with a heater, the gas inlet end of the nitrogen gas delivery piston pump and the air extraction piston pump is respectively connected with nitrogen gas inlet pipe and air extraction pipe, the nitrogen gas inlet pipe is connected with nitrogen gas source, and the air extraction pipe is connected with the bottom end of the reaction kettle.

[0009] Preferably, the middle of the top end of the reactor is provided with a motor, the output shaft of the motor is drivingly connected with a transmission rod, and the middle of the transmission rod is provided with stirring blades.

[0010] Preferably, the bottom end of the transmission rod is drivingly connected with a transmission frame through a one-way transmission bearing, and the transmission frame is in the shape of "F".

[0011] Preferably, the inside of the nitrogen delivery piston pump is slidingly connected with a piston one, one side of the nitrogen delivery piston pump is slidingly connected with a piston rod one, one end of the piston rod one is fixedly connected with the piston one, the other end of the piston rod one is hingedly connected with a hinge rod one, and the end of the hinge rod one away from the piston rod one is hingedly connected with the transmission frame.

[0012] Preferably, the inside of the air extraction piston pump is slidingly connected with a piston two, one side of the air extraction piston pump is slidingly connected with a piston rod two, one end of the piston rod two is fixedly connected with the piston two, the other end of the piston rod two is hingedly connected with a hinge rod two, and the end of the hinge rod two away from the piston rod two is hingedly connected with the transmission frame.

[0013] Preferably, the connection between the nitrogen delivery pipe and the nitrogen delivery piston pump and the connection between the air extraction piston pump and the air outlet pipe are both provided with one-way outlet valves, and the connection between the nitrogen inlet pipe and the nitrogen delivery piston pump and the connection between the air extraction pipe and the air extraction piston pump are both provided with one-way inlet valves.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] The nitrogen delivery piston pump and the air extraction piston pump can simultaneously realize air extraction and nitrogen injection, the motor drives the transmission rod to rotate in reverse, the transmission rod drives the transmission frame to rotate through the one-way transmission bearing at the bottom end, the transmission frame drives the hinge rod one and the hinge rod two to perform crankshaft movement, the hinge rod one and the hinge rod two drive the piston one and the piston two to slide through the piston rod one and the piston rod two, at this time, nitrogen is sucked into the nitrogen delivery piston pump, air in the nitrogen delivery piston pump is discharged at the same time, then the nitrogen in the nitrogen delivery piston pump is injected into the reactor through the nitrogen delivery pipe, air in the reactor is sucked into the air delivery piston pump through the air extraction pipe at the same time, nitrogen injection and air extraction are simultaneously performed, and the nitrogen can be heated through the heater, so that the nitrogen is located at the upper part of the reactor, until the air is completely extracted, the nitrogen injection is completed, and the nitrogen replacement is completed, compared with the existing nitrogen replacement device, the present application can simultaneously perform air extraction and nitrogen injection, the two processes are simultaneously performed, and the nitrogen replacement efficiency is greatly improved.

[0016] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, so as to be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following will be described in detail with the preferred embodiment of the present application and the accompanying drawings as follows.

[0017] According to the detailed description of the specific embodiments of the present application in the following combined with the drawings, those skilled in the art will more clearly understand the above and other purposes, advantages and characteristics of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating labor. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0019] Fig. 1 It is a structural schematic diagram of the present application;

[0020] Fig. 2 It is a structural schematic diagram of the nitrogen gas conveying piston pump and the air extraction piston pump in the present application.

[0021] In the figure: 1, reaction kettle; 2, stirring blade; 3, transmission rod; 4, motor; 5, nitrogen gas conveying pipe; 6, heater; 7, nitrogen gas conveying piston pump; 8, air extraction piston pump; 9, air outlet pipe; 10, nitrogen inlet pipe; 11, one-way transmission bearing; 12, air extraction pipe; 13, piston rod one; 14, connecting frame one; 15, hinged rod one; 16, transmission frame; 17, hinged rod two; 18, piston rod two; 19, piston two; 20, connecting frame two; 21, piston one. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in the following combined with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. In the following description, the specific details such as specific configurations and components are only provided to help understand the embodiments of the present application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, in order to be clear and concise, the description of known functions and structures is omitted in the embodiments.

[0023] In addition, reference numerals and / or letters can be repeated in different instances in this application. Such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and / or arrangements discussed.

[0024] The term "and / or", merely describes an associated relationship between associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, B alone, and A and B together. The term "and" in this document is used to describe another relationship between associated objects, which means that there can be two relationships, for example, A and B, which means that there are two cases of A alone and A and B together. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after it.

[0025] It should also be noted that in this document, relationship terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion.

[0026] Please refer to Figs. 1-2 The present application provides a kind of reaction kettle protective atmosphere nitrogen replacement device technical scheme: including reaction kettle 1, the two sides of the bottom end of reaction kettle 1 are respectively equipped with connecting frame one 14 and connecting frame two 20, the bottom end of connecting frame one 14 and connecting frame two 20 is respectively fixedly connected with nitrogen gas delivery piston pump 7 and air extraction piston pump 8, the gas outlet end of nitrogen gas delivery piston pump 7 and air extraction piston pump 8 is respectively connected with nitrogen gas delivery pipe 5 and air outlet pipe 9, the gas outlet end of nitrogen gas delivery pipe 5 is connected to the top end of reaction kettle 1, the gas outlet end of nitrogen gas delivery pipe 5 is equipped with heater 6, the gas inlet end of nitrogen gas delivery piston pump 7 and air extraction piston pump 8 is respectively connected with nitrogen gas inlet pipe 10 and air extraction pipe 12, nitrogen gas inlet pipe 10 is connected with nitrogen gas source, air extraction pipe 12 is connected with the bottom end of reaction kettle 1.

[0027] The middle part of the top end of reaction kettle 1 is equipped with motor 4, the output shaft of motor 4 is drivingly connected with transmission rod 3, the middle part of transmission rod 3 is equipped with stirring blade 2.

[0028] The bottom end of transmission rod 3 is drivingly connected with transmission frame 16 through one-way transmission bearing 11, and the shape of transmission frame 16 is "F" type.

[0029] Nitrogen gas delivery piston pump 7 is slidably connected with piston one 21, one side of nitrogen gas delivery piston pump 7 is slidably connected with piston rod one 13, one end of piston rod one 13 is fixedly connected with piston one 21, the other end of piston rod one 13 is hingedly connected with hinge rod one 15, and the end of hinge rod one 15 away from piston rod one 13 is hingedly connected with transmission frame 16.

[0030] The inside of the air extraction piston pump 8 is slidably connected with a piston two 19, and one side of the air extraction piston pump 8 is slidably connected with a piston rod two 18, one end of the piston rod two 18 is fixedly connected with the piston two 19, and the other end of the piston rod two 18 is hingedly connected with a hinged rod two 17, and the end of the hinged rod two 17 away from the piston rod two 18 is hingedly connected with the transmission frame 16.

[0031] The connection between the nitrogen conveying pipe 5 and the nitrogen conveying piston pump 7 and the connection between the air extraction piston pump 8 and the air outlet pipe 9 are both provided with a one-way outlet valve, and the connection between the nitrogen inlet pipe 10 and the nitrogen conveying piston pump 7 and the connection between the air extraction pipe 12 and the air extraction piston pump 8 are both provided with a one-way inlet valve, and the one-way outlet valve and the one-way inlet valve are arranged to enable the two piston pumps to smoothly carry out gas replacement.

[0032] In specific use, the motor 4 drives the transmission rod 3 to rotate in reverse, the transmission rod 3 drives the transmission frame 16 to rotate through the one-way transmission bearing 11 at the bottom end, the transmission frame 16 drives the hinged rod one 15 and the hinged rod two 17 to carry out crankshaft movement, the hinged rod one 15 and the hinged rod two 17 drive the piston one 21 and the piston two 19 to slide through the piston rod one 13 and the piston rod two 18, at this time, nitrogen is sucked into the nitrogen conveying piston pump 7, and the air in the nitrogen conveying piston pump 8 is discharged, then the nitrogen in the nitrogen conveying piston pump 7 is injected into the reaction kettle 1 through the nitrogen conveying pipe 5, and the air in the reaction kettle 1 is sucked into the air conveying piston pump 8 through the air extraction pipe 12, so that the nitrogen injection and the air extraction are carried out at the same time, and the nitrogen can be heated through the heater 6, so that the nitrogen is located at the upper part of the reaction kettle 1, until the air is completely extracted, the nitrogen injection is completed, and thus the nitrogen replacement is completed, compared with the existing nitrogen replacement device, the air extraction and the nitrogen injection can be carried out synchronously, the two processes are carried out synchronously, and the nitrogen replacement efficiency is greatly improved.

[0033] The above only describes the preferred embodiments of the present application, and does not limit the protection scope of the present application, for those skilled in the art, the present application can have various changes and variations. Any change, modification, replacement, integration and parameter change of the embodiments within the spirit and principle of the present application, which can realize the same function without departing from the principle and spirit of the present application, falls within the protection scope of the present application.

Claims

1. A nitrogen purging device for a protective atmosphere in a reactor, characterized in that: The reactor includes a reaction vessel (1). Connecting frame 1 (14) and connecting frame 2 (20) are installed on both sides of the bottom of the reaction vessel (1). Nitrogen delivery piston pump (7) and air extraction piston pump (8) are fixedly connected to the bottom of connecting frame 1 (14) and connecting frame 2 (20). Nitrogen delivery piston pump (7) and air extraction piston pump (8) are respectively connected to nitrogen delivery pipe (5) and air outlet pipe (9). The outlet of nitrogen delivery pipe (5) is connected to the top of the reaction vessel (1). A heater (6) is installed at the outlet of nitrogen delivery pipe (5). Nitrogen inlet pipe (10) and air extraction pipe (12) are respectively connected to the inlet of nitrogen delivery piston pump (7) and air extraction piston pump (8). Nitrogen inlet pipe (10) is connected to a nitrogen source. Air extraction pipe (12) is connected to the bottom of the reaction vessel (1).

2. The nitrogen purging device for a reactor protective atmosphere as described in claim 1, characterized in that: A motor (4) is installed at the middle of the top of the reactor (1). The output shaft of the motor (4) is connected to a transmission rod (3). A stirring blade (2) is installed at the middle of the transmission rod (3).

3. The nitrogen purging device for a reactor protective atmosphere as described in claim 2, characterized in that: The bottom end of the transmission rod (3) is connected to the transmission frame (16) via a one-way transmission bearing (11), and the transmission frame (16) is in the shape of an "F".

4. The nitrogen purging device for a reactor protective atmosphere as described in claim 3, characterized in that: The nitrogen delivery piston pump (7) has a piston 1 (21) slidably connected inside, and a piston rod 1 (13) slidably connected to one side of the nitrogen delivery piston pump (7). One end of the piston rod 1 (13) is fixedly connected to the piston 1 (21), and the other end of the piston rod 1 (13) is hinged to a hinge rod 1 (15). The end of the hinge rod 1 (15) away from the piston rod 1 (13) is hinged to the transmission frame (16).

5. The nitrogen purging device for a reactor protective atmosphere as described in claim 3, characterized in that: The air extraction piston pump (8) has a piston 2 (19) slidably connected inside. A piston rod 2 (18) is slidably connected to one side of the air extraction piston pump (8). One end of the piston rod 2 (18) is fixedly connected to the piston 2 (19). The other end of the piston rod 2 (18) is hinged to a hinge rod 2 (17). The end of the hinge rod 2 (17) away from the piston rod 2 (18) is hinged to the transmission frame (16).

6. The nitrogen purging device for a reactor protective atmosphere as described in claim 3, characterized in that: One-way valves are installed at the connection between the nitrogen delivery pipe (5) and the nitrogen delivery piston pump (7) and at the connection between the air extraction piston pump (8) and the air outlet pipe (9). One-way valves are installed at the connection between the nitrogen inlet pipe (10) and the nitrogen delivery piston pump (7) and at the connection between the air extraction pipe (12) and the air extraction piston pump (8).

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