Automatic feeding device for pressure kettle

Abstract

The utility model discloses an automatic feeding device for a pressure kettle, which comprises a reaction kettle, a stirring unit is arranged in the reaction kettle, and the top of the reaction kettle is connected with a bidirectional flange communicated with the reaction kettle; the feeding tank is in a conical barrel shape, an emptying pipe is arranged on the top of the feeding tank, an emptying valve is arranged on the emptying pipe, a pressure pipe and a feeding pipe are arranged on the upper portion and the bottom of the feeding tank respectively, the other end of the pressure pipe and the other end of the feeding pipe are connected with the two-way flange plate respectively, a first valve is arranged on the pressure pipe, and a second valve is arranged on the feeding pipe. The first valve is used for pressure control of the feeding tank and the reaction kettle, the second valve is used for controlling discharging of the feeding tank, and the emptying valve is used for pressure adjustment; the feeding unit comprises a feeding pipe connected to the top of the feeding tank and a conveying part, and the conveying part is used for conveying raw materials; by means of the mode, the feeding process is greatly simplified, the whole feeding process can be completed in a short time, the time cost is greatly saved, and under the arrangement of the valves, materials are prevented from being sprayed out in the pressure relief process.

Description

TECHNICAL FIELD

[0001] The utility model relates to reaction feeding technical field, concretely relates to an automatic feeding device for pressure still. BACKGROUND

[0002] In chemical production, pressure still is a common and important reaction equipment, which needs to add materials into its interior during use.

[0003] For example, the high-pressure still solid feeding device is disclosed in CN205042438U, which comprises two high-pressure ball valves and a feeding cavity, and constitutes a simple solid feeding device, which can reduce manual operation, but when pressure relief feeding, the pressure relief port, that is, the feeding port, may cause the cavity residual material to spray out, and there is no material cleaning device, and the material may be stuck in the cavity inner wall, which affects the actual material addition amount. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model aims at providing an automatic feeding device for pressure still, so as to solve the problem that the prior art needs to reduce temperature and depressurize to normal pressure state every time feeding, which not only consumes a lot of time, but also may cause the cavity residual material to spray out of the pressure relief port.

[0005] According to the embodiment of the utility model, an automatic feeding device for pressure still, comprising a reaction kettle, which is internally provided with a stirring unit, and a two-way flange plate connected with the reaction kettle at the top thereof; a feeding tank in the shape of a conical barrel, which is provided with a vent pipe at the top thereof, and a vent valve is arranged on the vent pipe, wherein the upper part and the bottom part of the feeding tank are respectively provided with a pressure equalization pipe and a feeding pipe, the other ends of the pressure equalization pipe and the feeding pipe are respectively connected with the two-way flange plate, a first valve is arranged on the pressure equalization pipe, a second valve is arranged on the feeding pipe, the first valve is used for pressure equalization control between the feeding tank and the reaction kettle, the second valve is used for controlling the discharge of the feeding tank, and the vent valve is used for pressure adjustment; a feeding unit, comprising a feeding pipe connected with the top of the feeding tank and a conveying member, and the conveying member is used for conveying raw materials.

[0006] Compared with the prior art, the utility model has the following beneficial effects: the setting of the tank and the cooperative work of the pressure equalization pipe, the feeding pipe and the valves make it unnecessary to frequently reduce the temperature and depressurize the pressure still during the feeding process. When feeding is needed, only the first valve on the pressure equalization pipe is opened to equalize the pressure between the feeding tank and the reaction kettle, and the pressure of the two is balanced. Then the second valve on the feeding pipe is opened, and due to the pressure balance, the raw materials can flow into the reaction kettle from the feeding tank under the action of gravity. This mode greatly simplifies the feeding process, and the whole feeding process can be completed in a short time, which greatly saves the time cost, and under the setting of the valves, the spraying of the materials during the depressurization process is avoided.

[0007] Preferably, the conveying member further comprises: a feeding pump connected with the feeding tank through a feeding pipe, the feeding pipe being provided with a fourth valve for controlling the flow of the pumped material; and a raw material pool connected with the feeding pump through a pipeline.

[0008] Preferably, an observation port is formed on the top of the feeding tank, and a visual glass is arranged at the observation port.

[0009] Preferably, a pressure gauge is arranged on the top of the feeding tank.

[0010] Preferably, a blowing pipe is arranged on the top side of the interior of the feeding tank, and a plurality of groups of air nozzles are uniformly arranged on the blowing pipe.

[0011] Preferably, the stirring unit comprises a motor arranged on the reaction kettle and stirring blades arranged in the reaction kettle, the stirring blades being in driving connection with the motor.

[0012] Preferably, a discharge valve is arranged on the bottom of the reaction kettle. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The figure is a structural schematic view of an embodiment of the utility model.

[0014] Figure 2 The figure is a structural schematic view of the feeding tank in the embodiment of the utility model.

[0015] Figure 3 The figure is a top view of the bidirectional flange plate in the embodiment of the utility model.

[0016] The reference signs in the drawings of the specification comprise:

[0017] 1, reaction kettle; 101, discharge valve; 102, motor; 103, stirring blade;

[0018] 2, feeding tank; 201, observation port; 202, visual glass; 203, pressure gauge; 204, blowing pipe; 205, air nozzle;

[0019] 3, pressure pipe; 301, first valve; 302, vent pipe; 303, vent valve;

[0020] 4, feeding pipe; 401, fourth valve; 402, feeding pump; 403, raw material pool; 404, feeding pipe; 405, second valve;

[0021] 5, bidirectional flange plate. DETAILED DESCRIPTION

[0022] The technical solutions in the utility model will be further described below in combination with the drawings and embodiments.

[0023] For example, Figures 1 to 3As shown, the utility model discloses a kind of automatic feeding device for pressure still, it includes reaction still 1, its inside is equipped with stirring unit, reaction still 1 top is connected with the two-way flange plate 5 communicated with it;Feeding tank 2, it is conical barrel, its top is provided with vent pipe 302, vent pipe 302 is provided with vent valve 303, wherein, feeding tank 2 upper portion and bottom are respectively provided with through pressure pipe 3 and feeding pipe 404, through pressure pipe 3 and feeding pipe 404 other end are respectively connected with two-way flange plate 5, and through pressure pipe 3 is provided with first valve 301, feeding pipe 404 is provided with second valve 405, first valve 301 is used for feeding tank 2 and reaction still 1 through pressure control, second valve 405 is used for controlling feeding tank 2 discharge, vent valve 303 is used for pressure regulation;Feeding unit, including the feeding pipe 4 of being connected in feeding tank 2 top and conveying piece, conveying piece is used to transport raw material.

[0024] The detailed working process of the embodiment is as follows: under the setting of the vent pipe 302 and the vent valve 303, the gas pressure in the feeding tank 2 can be released. Only the vent valve 303 is needed to discharge the gas pressure in the feeding tank 2 to achieve the required pressure condition.

[0025] When feeding is needed, first, the raw material is sent to the feeding tank 2 through the feeding unit, the second valve 405 on the feeding pipe and the vent valve 303 on the through pressure pipe are closed, and then the first valve 301 on the through pressure pipe 3 is opened to make the feeding tank 2 and the reaction still 1 through pressure. At this time, the pressure of the two reaches a balanced state. Then the second valve 405 on the feeding pipe 404 is opened. Because of the pressure balance, the raw material can flow smoothly from the feeding tank 2 into the reaction still 1 under the action of gravity.

[0026] As shown in the figure, Figure 1 The conveying piece further includes: a feeding pump 402 connected with the feeding tank 2 through the feeding pipe 4, the feeding pipe 4 is provided with a fourth valve 401, and the feeding pipe 4 is used to control the flow of pumped material; and a raw material pool 403 connected with the feeding pump 402 through a pipeline.

[0027] The detailed working process of the embodiment is as follows: the connection of the feeding pump 402 with the raw material pool 403 and the feeding tank 2 ensures continuous and stable supply of raw materials. The raw material pool 403 serves as a raw material reserve source and can meet the large demand for raw materials in large-scale production. The feeding pump 402 accurately pumps the raw material from the raw material pool 403 into the feeding tank 2, avoids production interruption caused by shortage of raw materials, and maintains the coherence of the production process. The feeding pump 402 can effectively transport raw materials with different physical properties, whether they are liquid raw materials with good flowability or paste-like raw materials with certain viscosity, etc.

[0028] As shown in the figure, Figure 2As shown, the top of the feeding tank 2 is provided with an observation port 201, and a viewing glass 202 is provided at the observation port 201.

[0029] The detailed working process of this embodiment is as follows: With the observation port 201 and the viewing glass 202 in place, before adding material to the feeding tank 2, the amount of material remaining in the tank can be known in advance through the observation port 201, and the feeding amount can be reasonably arranged. If there is a lot of material in the tank, the feeding amount can be appropriately reduced to prevent excessive feeding and overflow; if there is a little material, it can be replenished in time to ensure the continuity of production.

[0030] like Figure 2 As shown, a pressure gauge 203 is installed on the top of the feeding tank 2.

[0031] The detailed working process of this embodiment is as follows: With the pressure gauge 203 set, the pressure value inside the feeding tank 2 can be displayed in real time and accurately. Operators do not need to indirectly infer the pressure by observing the material state; by reading the pressure gauge 203, they can intuitively obtain the current pressure status, thereby accurately controlling the pressure status inside the tank.

[0032] like Figure 2 As shown, an air blowing pipe 204 is provided on the top side inside the feeding tank 2, and multiple sets of air jet nozzles 205 are evenly distributed on the air blowing pipe 204.

[0033] The detailed working process of this embodiment is as follows: With the air blowing pipe 204 in place, the residual material adhering to the inner wall of the feeding tank 2 can be blown into the reaction vessel 1, reducing feeding errors.

[0034] like Figure 1 As shown, the stirring unit includes a motor 102 mounted on the reactor 1 and a stirring blade 103 mounted inside the reactor 1, with the stirring blade 103 being connected to the motor 102 in a drive connection.

[0035] The detailed working process of this embodiment is as follows: with the stirring blade 103 set, the uniformity of product composition and performance inside the reactor 1 is ensured.

[0036] like Figure 1 As shown, a discharge valve 101 is installed at the bottom of the reactor 1.

[0037] The detailed working process of this embodiment is as follows: The discharge valve 101 is located at the bottom of the reactor 1. Utilizing gravity, the material can naturally gather at the bottom after the reaction is completed, without the need for additional complex discharge equipment or power. When the discharge valve 101 is opened, the material can be quickly and smoothly discharged from the reactor under the pull of gravity.

[0038] The principle of the embodiment of the present application is as follows: in the production process, the second valve 405, the first valve 301 and the fourth valve 401 are kept closed, the vent valve 303 is opened for venting, and then part of the reaction material is put into the reaction kettle 1, and the reaction kettle 1 is heated to reach a positive pressure of 0.5-1.0 MPa; then the fourth valve 401 is opened, and the liquid chemical raw material is sent into the feeding tank 2 by the feeding pump 402, and after the material is delivered, the fourth valve 401 is closed. The reaction material is slowly added under the condition of positive pressure: the vent valve 303 is closed first, then the first valve 301 is slowly opened, so that the pressure in the feeding tank 2 is balanced with the reaction kettle 1, and then the valve opening degree of the second valve 405 is controlled to adjust the flow rate of the material into the reaction kettle 1, so as to improve the uniformity of the feeding and provide a suitable reaction speed. After the feeding is completed, the first valve 301 and the second valve 405 are closed, and the vent valve 303 is slowly opened for venting. The reaction kettle 1 continues to be heated to the specified pressure and temperature, and continues to react to the specified index, and the reaction stops.

[0039] In the production process, the powder is put into the feeding tank 2 as follows: the vent valve 303 is opened for venting and exhausting, the first valve 301, the second valve 405 and the fourth valve 401 are closed to prevent material mixing, and a certain amount of powder, granular material or small solid material is poured into the feeding tank 2 for standby. When the reaction condition is reached, the vent valve 303 is closed first, then the first valve 301 is slowly opened, so that the pressure in the feeding tank 2 is balanced with the reaction kettle 1, and then the valve opening degree of the second valve 405 is controlled to adjust the flow rate of the material into the reaction kettle 1, so as to improve the uniformity of the material and provide a suitable reaction speed, and finally it is observed through the visual glass 202. The residual material in the feeding tank 2 can be blown into the reaction kettle 1 by using the blowing pipe 204 to introduce compressed gas such as nitrogen or air which does not participate in the reaction, so that the feeding of the reaction is more accurate. After the feeding is completed, the first valve 301 and the second valve 405 are closed, and the vent valve 303 is slowly opened for venting. The reaction kettle 1 is heated to the specified pressure and temperature, and continues to react to the specified index, and the reaction stops.

[0040] The control elements of the whole device are high-precision control elements, which can accurately control the time and degree of opening and closing to meet the accurate requirements under different feeding conditions, and the control elements are conventional elements in the field and will not be described here.

[0041] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. An automated charging device for an autoclave, characterized in that, The utility model relates to a kind of reaction kettle and feeding tank, including: Reaction kettle (1), which is provided with a stirring unit inside, and a two-way flange (5) is connected to the top of the reaction kettle (1) and communicates with the reaction kettle (1); The feeding tank (2) is in the shape of a conical barrel, and is provided with a vent pipe (302) at the top thereof, and a vent valve (303) is arranged on the vent pipe (302). The upper part and the bottom part of the feeding tank (2) are respectively provided with a pressure equalizing pipe (3) and a feeding pipe (404). The other ends of the pressure equalizing pipe (3) and the feeding pipe (404) are respectively connected to the two-way flange (5). The pressure equalizing pipe (3) is provided with a first valve (301), and the feeding pipe (404) is provided with a second valve (405). The first valve (301) is used for pressure equalization control between the feeding tank (2) and the reaction kettle (1). The second valve (405) is used for controlling the discharge of the feeding tank (2). The vent valve (303) is used for pressure adjustment. The feeding unit comprises a feeding pipe (4) connected to the top of the feeding tank (2) and a conveying member for conveying raw materials.

2. An automated charging device for an autoclave as claimed in claim 1, characterized in that The conveying member further comprises: A feeding pump (402) is connected to the feeding tank (2) through the feeding pipe (4). The feeding pipe (4) is provided with a fourth valve (401). The feeding pipe (4) is used for controlling the flow of pumped materials. A raw material pool (403) is connected to the feeding pump (402) through a pipeline.

3. The automatic charging device for an autoclave according to any one of claims 1 to 2, characterized in that: An observation port (201) is formed in the top of the feeding tank (2). A sight glass (202) is arranged at the observation port (201).

4. An automated charging device for an autoclave as claimed in claim 3, characterized in that: A pressure gauge (203) is arranged on the top of the feeding tank (2).

5. An automatic charging device for an autoclave as claimed in claim 1, wherein: A gas blowing pipe (204) is arranged on the top side of the inside of the feeding tank (2). The gas blowing pipe (204) is uniformly provided with a plurality of groups of air injection nozzles (205).

6. An automated charging device for an autoclave as claimed in claim 1, wherein: The stirring unit comprises a motor (102) arranged on the reaction kettle (1) and stirring blades (103) arranged in the reaction kettle (1). The stirring blades (103) are drivingly connected to the motor (102).

7. An automated charging device for an autoclave as claimed in claim 6, characterized in that: A discharge valve (101) is arranged at the bottom of the reaction kettle (1).

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