Mixing kettle and mixing kettle discharging device

Abstract

The utility model discloses a mixing kettle and a mixing kettle discharging device, and the mixing kettle discharging device comprises a butterfly valve for discharging and a pressure regulating unit for regulating the pressure in the mixing kettle, an inlet of the butterfly valve is connected with a discharge hole formed in the side wall of the mixing kettle, and an outlet of the butterfly valve is connected with the filtering unit. According to the utility model, the problem of accumulation of indissolvable materials at the discharge port can be effectively reduced, meanwhile, the filter screen is convenient to replace, and the discharge efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of mixing kettle, concretely relates to a mixing kettle and mixing kettle discharge device. BACKGROUND

[0002] Resin is an important component of composite materials, and currently resin production usually uses a mixing kettle to mix resin, curing agent, toughening agent and other additives through certain processes and proportions by stirring, heating and cooling. The existing resin mixing kettle mostly uses a bottom-mounted ball valve to discharge resin. After resin mixing is completed, the ball valve is rotated to make resin flow out to achieve the purpose of resin discharge. The existing method mainly has the following shortcomings:

[0003] The ball valve top is connected with the mixing kettle discharge port, causing unevenness of the mixing kettle bottom. The ball valve top is connected with the kettle bottom to form a groove, and the hard-to-dissolve raw materials are prone to accumulation and cannot be dissolved, affecting the accuracy of resin raw material proportioning and increasing the risk of hard particles mixed in resin. The connection of the ball valve with the kettle bottom produces a gap, which has a certain influence on the vacuum degree of the mixing kettle. The air tightness and durability of the ball valve are low, and resin accumulates in the ball valve during the discharge process. The accumulated resin is difficult to flow out, causing waste of resin. In actual production, the natural flow rate of resin is slow for resin with high viscosity, affecting work efficiency. On the other hand, the filtering method of this discharge method generally uses a filter screen installed in the ball valve jacket. When the filter screen is blocked by impurities or the mesh size of the filter screen is too large to allow resin to flow out, the filter screen cannot be replaced during the discharge process because it is located between the ball valve and the kettle body. In the prior art, the ball valve or pneumatic valve for discharge is installed at the center of the kettle bottom. During installation and removal, personnel need to drill to the kettle bottom for operation, which is difficult to operate and has safety risks for personnel operating at the kettle bottom.

[0004] Another mixing kettle discharge method is to install a pneumatic valve at the bottom. The discharge operation is performed by controlling the opening and closing of the pneumatic valve, and an external drainage pipeline is connected to flow resin to a specified position. Resin is in a solid state when it cools to room temperature. This discharge method is prone to blockage of the pneumatic valve and pipeline, making it difficult to discharge resin. This method is only suitable for thermoplastic resin and not suitable for thermosetting resin, which has great limitations. On the other hand, the filtering method of this discharge method generally uses a filter screen on the top of the packaging barrel. Resin flows out of the discharge pipeline and onto the filter screen, and the resin is naturally filtered into the packaging barrel. The production efficiency is low, and the accumulated resin can stretch and deform the gap of the filter screen. SUMMARY

[0005] To solve the problems in the prior art, the utility model provides a mixing kettle and mixing kettle discharge device, which can effectively reduce the accumulation of hard-to-dissolve materials at the discharge port, facilitate replacement of the filter screen, and improve the discharge efficiency.

[0006] To achieve the above object, the utility model adopts the technical scheme that is:

[0007] Firstly, a kind of mixed kettle discharging device is provided, including butterfly valve for discharging and pressure regulating unit for adjusting pressure in mixed kettle;The inlet of the butterfly valve is connected with the discharge port opened in the side wall of the mixed kettle, and the outlet of the butterfly valve is connected with the filtering unit.

[0008] Further, the inlet flange of the butterfly valve is connected with the side wall of the mixed kettle by fastener, and sealing rubber is arranged between the inlet flange of the butterfly valve and the side wall of the mixed kettle.

[0009] Further, the filtering unit includes channel and filter screen, one end of the channel is connected with the outlet of the butterfly valve, and the other end of the channel is installed with the filter screen.

[0010] Further, the axis of the channel is inclined to the kettle bottom of the mixed kettle by a set angle.

[0011] Further, the butterfly valve includes driving assembly, the valve core in the valve body is driven by valve stem through the driving assembly;The driving assembly includes handle, pneumatic actuator and electric actuator.

[0012] Further, the pressure regulating unit includes air compressor, and the air compressor is connected with the mixed kettle by gas pipeline.

[0013] Further, the pressure regulating unit further includes vacuum pump, and the vacuum pump is connected with the mixed kettle by gas pipeline.

[0014] Secondly, a kind of mixed kettle is provided, and the mixed kettle is configured with the mixed kettle discharging device of the first aspect.

[0015] Compared with prior art, the utility model achieves the beneficial effects that:

[0016] (1) the butterfly valve installed in the side wall of the mixed kettle, the filtering unit installed in the outlet of the butterfly valve and the pressure regulating unit for adjusting the pressure in the mixed kettle, avoid the problem that the difficultly soluble raw material is accumulated in the kettle bottom;Sealing rubber is used to connect the connection part of the butterfly valve and kettle wall, and the air tightness is good;The internal channel structure is simple, and resin is not easy to accumulate, waste is little, and the channel structure is convenient to clean, reduces resin waste and facilitates cleaning;

[0017] (2) the device structure is simple, and resin flows from the kettle to the outside only through the butterfly valve, effectively prevents the problem that resin solidification causes pipeline blockage;

[0018] (3) the device is installed at the connection part of kettle wall and kettle bottom, and is fixed by fastener, so that installation / dismounting is convenient and safety incidents are avoided;

[0019] (4) The filter screen of the device is installed on the side of the device in contact with air, is fixed on the jacket by fasteners, is convenient to disassemble / replace, and the state of the filter screen can be observed in time during the discharging process to make adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a whole structure schematic view of a mixing kettle and a mixing kettle discharging device provided by the embodiment of the present application;

[0021] Figure 2 is a structure schematic view of a mixing kettle discharging device provided by the embodiment of the present application;

[0022] Figure 3 is Figure 2 a left view;

[0023] In the figure: 1, feed inlet; 2, mixing kettle; 3, butterfly valve; 31, valve core; 4, fastener; 5, filter screen; 6, air compressor; 7, channel; 8, driving assembly; 9, valve rod; 10, jacket; 11, valve body. DETAILED DESCRIPTION

[0024] The present application will be further described below in combination with the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and cannot be used to limit the protection scope of the present application.

[0025] Embodiment one

[0026] As shown in Figure 1 , Figure 2 , a mixing kettle discharging device includes a butterfly valve 3 for discharging and a pressure regulating unit for regulating the pressure in the mixing kettle 2. The top side of the mixing kettle 2 is provided with a feed inlet 1, and the side wall bottom of the mixing kettle 2 is provided with a butterfly valve 3. The inlet of the butterfly valve 3 is connected with a discharge port opened in the side wall of the mixing kettle 2, and the outlet of the butterfly valve 3 is connected with a filter unit.

[0027] The butterfly valve 3 comprises a driving assembly 8 for driving the valve core 3 in the valve body 11 through a valve rod 9; the driving assembly 8 comprises a handle, a pneumatic actuator and an electric actuator. The inlet flange of the butterfly valve is connected to the sidewall of the mixing kettle 2 through fasteners 4, and a sealing rubber is arranged between the inlet flange of the butterfly valve and the sidewall of the mixing kettle 2, which increases the air tightness of the mixing kettle 2 and prevents the resin from flowing out. The butterfly valve 3 is connected to the outer wall of the mixing kettle 2 through fasteners 4 on the periphery, which is convenient for the staff to operate and disassemble. The discharge port is on the same plane as the sidewall of the mixing kettle 2, which avoids the problem of recesses on the inner wall of the kettle and solves the problem of difficult-to-dissolve raw materials accumulated at the discharge port. Moreover, the discharge port is on the kettle wall, and the shear force on the kettle wall during stirring is much greater than that on the kettle bottom, which is beneficial to improve the uniformity of resin mixing. In terms of operation, compared with the ball valve used in the prior art, the butterfly valve has a small size and light weight, which is convenient to operate. In terms of cost, the spherical structure inside the ball valve is prone to accumulate resin, causing waste of resin, while the butterfly valve has a small straight pipe inside, and resin is not easy to accumulate.

[0028] The filtering unit comprises a channel 7 and a filter screen 5, one end of the channel 7 is connected to the outlet of the butterfly valve, and the other end of the channel 7 is provided with the filter screen 5 through a jacket 10 and fasteners 4. The filter screen 5 plays a role in filtering resin impurities. The filter screen 5 is fixed by fasteners 4, which is convenient for installation and replacement of filter screens 5 with different mesh sizes. Moreover, the filter screen 5 is installed externally, and can be replaced at any time during production, which is convenient to operate.

[0029] The butterfly valve 3 is installed on the outside of the mixing kettle 2, and the axis of the channel 7 is inclined by 45 degrees towards the kettle bottom of the mixing kettle 2, which is convenient for resin to flow out and reduces the accumulation of resin in the butterfly valve.

[0030] The pressure regulating unit comprises an air compressor 6 connected to the mixing kettle 2 through a gas pipeline. For resin with poor flowability, the air compressor 6 is used to increase the pressure in the kettle during the discharging process, accelerate the flow of resin and improve the production efficiency. The pressure regulating unit also comprises a vacuum pump connected to the mixing kettle 2 through a gas pipeline. During production, the vacuum pump maintains a certain degree of vacuum in the mixing kettle, which plays a role in removing bubbles in the resin.

[0031] Embodiment two

[0032] Based on the mixing kettle discharging device described in embodiment one, the present embodiment provides a mixing kettle provided with the mixing kettle discharging device described in embodiment one.

[0033] The above description is only a preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A mixing vessel discharge device, characterized in that, Includes a butterfly valve (3) for discharging material and a pressure regulating unit for adjusting the pressure inside the mixing vessel (2); The inlet of the butterfly valve (3) is connected to the outlet on the side wall of the mixing vessel (2), and the outlet of the butterfly valve (3) is connected to the filter unit.

2. The mixing vessel discharge device according to claim 1, characterized in that, The inlet flange of the butterfly valve (3) is connected to the side wall of the mixing vessel (2) by fasteners (4), and a sealing rubber is provided between the inlet flange of the butterfly valve (3) and the side wall of the mixing vessel (2).

3. The mixing tank discharge device according to claim 1, characterized in that, The filtration unit includes a channel (7) and a filter screen (5). One end of the channel (7) is connected to the outlet of the butterfly valve (3), and the other end of the channel (7) is fitted with the filter screen (5).

4. The mixing tank discharge device according to claim 3, characterized in that, The axis of the channel (7) is tilted at a set angle toward the bottom of the mixing vessel (2).

5. The mixing tank discharge device according to claim 1, characterized in that, The butterfly valve (3) includes a drive assembly (8), which drives the valve core (31) in the valve body (11) via the valve stem (9); the drive assembly (8) includes a handle, a pneumatic actuator and an electric actuator.

6. The mixing tank discharge device according to claim 1, characterized in that, The pressure regulating unit includes an air compressor (6), which is connected to the mixing vessel (2) via a gas pipeline.

7. The mixing tank discharge device according to claim 1, characterized in that, The pressure regulating unit also includes a vacuum pump, which is connected to the mixing vessel (2) via a gas pipeline.

8. A mixing vessel, characterized in that, The mixing vessel is equipped with the mixing vessel discharge device according to any one of claims 1 to 7.

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