Trace catalyst adding device

Abstract

The utility model discloses a trace catalyst adding device which comprises a catalyst container used for storing a catalyst; the conveying pipeline is connected to the discharging end of the catalyst container and is used for conveying a catalyst; the quantifying part is arranged on the conveying pipeline and is used for quantifying the catalyst; the needle head part is arranged on the conveying pipeline, is positioned at the downstream position of the quantifying part and is used for outputting a quantitative catalyst; the switch component is arranged at the discharging end of the conveying pipeline and used for opening or closing the conveying pipeline. The trace catalyst adding device provided by the utility model can improve the quantitative precision of the catalyst, improve the production efficiency and reduce the production cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of catalyst addition, and particularly relates to an addition device for trace catalysts. Background Art

[0002] Triethylamine, a commonly used catalyst in the manufacture of cold box coresands, is volatile and corrosive, and has extremely high requirements for the quantitative accuracy and conveying speed of its addition device.

[0003] The currently adopted addition system often adopts the structure of a cylinder and a diaphragm valve, resulting in low quantitative accuracy when adding trace catalysts and being unable to be suitable for the production of micro coresands.

[0004] There are mainly the following problems:

[0005] (1) Currently, in conventional trace catalyst addition devices, due to the extremely small demand for catalysts, the catalysts adhere to the conveying pipe wall during the conveying of catalysts because of the viscosity of the catalysts themselves, resulting in inaccurate quantification of the catalysts;

[0006] (2) In multiple process cases, to avoid the risk of catalyst heating, the catalyst addition position is generally placed in a far - away place, which will extend the catalyst conveying pipeline and cause unnecessary waste;

[0007] (3) The diameter of the quantitative conveying pipe of the metering pump is large, and the actual flow velocity in the pipe is slow, reducing the rate of the overall addition system and, due to the slow flow velocity in the pipe, it is extremely easy for the catalyst to hover at the cross - section of the hose;

[0008] (4) Since the equipment is a multi - process equipment, the commonly used injection valve often gets blocked due to catalyst heating, affecting the quantitative accuracy during actual catalyst addition. Content of the Utility Model

[0009] Based on the above problems, the purpose of the utility model is to provide an addition device for trace catalysts, which can improve the quantitative accuracy of catalysts.

[0010] In order to overcome the deficiencies of the prior art, the technical solution provided by the utility model is:

[0011] An addition device for trace catalysts, comprising:

[0012] A catalyst container for storing catalysts;

[0013] A conveying pipeline connected to the discharge end of the catalyst container for conveying catalysts;

[0014] A quantitative component arranged on the conveying pipeline for completing the quantification of catalysts;

[0015] A needle component, which is arranged on the conveying pipeline and is located downstream of the metering component, for outputting a metered catalyst;

[0016] A switch component, which is arranged at the discharge end of the conveying pipeline, for opening or closing the conveying pipeline.

[0017] In one embodiment, the conveying pipeline includes a first pipeline and a second pipeline arranged in sequence. The metering component is arranged on the first pipeline. The needle component connects the first pipeline and the second pipeline, and the switch component is connected to the second pipeline.

[0018] In one embodiment, the diameter of the first pipeline is more than five times the diameter of the needle tube of the needle component.

[0019] In one embodiment, the needle component is connected to the first pipeline through a first joint, and the switch component is connected to the second pipeline through a second joint.

[0020] In one embodiment, the switch component is a pneumatic ball valve, and the valve body of the pneumatic ball valve is connected to the second pipeline through the second joint.

[0021] In one embodiment, a switch valve is arranged on the first pipeline between the catalyst container and the metering component.

[0022] In one embodiment, a heater is further included. The discharge end of the switch component is connected to the first interface of a tee. The heater is connected to the second interface of the tee through a first connecting pipe. The third interface of the tee is connected to a catalytic gas conveying component through a second connecting pipe.

[0023] In one embodiment, the discharge end of the switch component is connected to the tee through a flange assembly.

[0024] In one embodiment, the flange assembly includes a first flange and a second flange which are symmetrically arranged and fixedly connected. The first flange has a first limiting portion matching the switch component, and the second flange has a second limiting portion matching the tee. The first limiting portion and the second limiting portion communicate with each other.

[0025] In one embodiment, the metering component is a metering pump.

[0026] Compared with the prior art, the advantages of the present utility model are:

[0027] 1. By using a needle component for conveying at the discharge end of the metering component, the error caused by the viscosity of the catalyst itself during the conveying process can be reduced, and the accuracy of catalyst metering can be improved;

[0028] 2. The pipe diameter at the metering component is larger than that of the syringe tube of the needle, ensuring that the conveying pipe diameter is five times that of the syringe tube of the needle component, effectively increasing the flow rate of the catalyst in the pipe, improving the addition rate and effectively preventing the catalyst droplets from hovering at the needle tip of the syringe tube.

[0029] 3. The switching component uses a pneumatic ball valve, effectively avoiding the problem of injection valve blockage caused by heat conduction under multiple process conditions. On the one hand, it has high safety, and at the same time shortens the overall conveying pipeline to avoid unnecessary waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. The drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0031] Figure 1 FIG. 1 is one of the structural schematic diagrams of an embodiment of an apparatus for adding a trace amount of catalyst according to the present invention;

[0032] Figure 2 FIG. 2 is the second structural schematic diagram of an embodiment of the present invention;

[0033] Figure 3 FIG. 3 is the structural schematic diagram of the connection between the switching component and the tee in the embodiment of the present invention;

[0034] Wherein:

[0035] 1. Catalyst container; 2. First pipeline; 3. Metering component; 4. Needle component; 5. Second pipeline; 6. Switching component; 6-1. Valve body; 6-2. Valve core; 6-3. Valve rod; 6-4. Pneumatic actuator; 7. Tee; 8. Heater; 9. First connecting pipe; 10. Second connecting pipe; 11. Switching valve; 12. Catalytic gas conveying component; 13. First joint; 14. Second joint; 15. First flange; 15-1. First limiting part; 16. Second flange; 16-1. Second limiting part; 17. Bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The following further illustrates the above solutions with specific embodiments. It should be understood that these embodiments are for illustrating the present invention and not for limiting the scope of the present invention. The implementation conditions adopted in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually those in conventional experiments.

[0037] See Figure 1, which is an adding device for a trace amount of catalyst of the present utility model, includes a catalyst container 1, a conveying pipeline connecting the catalyst container 1, and a metering component 3, a needle component 4, and a switching component 6 sequentially arranged on the conveying pipeline.

[0038] The catalyst container 1 adopts a box body that does not react with the catalyst. The box body has a sealing cover, and the catalyst can be sealed in the box body.

[0039] The conveying pipeline, which is connected to the discharge end of the catalyst container 1 and is used for conveying the catalyst, includes a first pipeline 2 and a second pipeline 5 arranged in sequence.

[0040] The metering component 3, which is arranged on the first pipeline 2 and is used for metering the catalyst, can adopt a metering pump. In order to facilitate the control of the first pipeline 2, a switching valve 11 is provided on the first pipeline 2 between the catalyst container 1 and the metering component 3. The switching valve 11 can adopt a ball valve.

[0041] The needle component 4, which is arranged on the conveying pipeline and is located downstream of the metering component 3, is used for outputting the metered catalyst. Specifically, the needle component 4 is connected to the first pipeline 2 through a first joint 13. The diameter of the first pipeline 2 is more than five times the diameter of the needle tube of the needle component 4, which can effectively increase the flow rate of the catalyst in the tube, improve the adding rate, and effectively avoid the catalyst droplets from hovering at the needle tip of the needle tube.

[0042] The switching component 6, which is arranged at the discharge end of the conveying pipeline and is used for opening or closing the conveying pipeline. Preferably, the switching component 6 adopts a pneumatic ball valve. The valve body 6-1 of the pneumatic ball valve is connected to the second pipeline 5 through a second joint 14. The pneumatic ball valve is a prior art, which includes a valve body 6-1, a valve core 6-2 arranged in the valve body 6-1, a valve rod 6-3 connected to the valve core 6-2, and a pneumatic actuator 6-4 for controlling the movement of the valve rod 6-3. The opening or closing of the valve is realized by controlling the pressure of the air source. When the pneumatic actuator 6-4 receives a control signal, compressed air is sent into the interior of the pneumatic actuator 6-4 through the air source. The piston of the pneumatic actuator 6-4 is forced to push the valve rod 6-3, so that the spherical valve core 6-2 rotates 90 degrees around the center line of the valve body 6-1, thereby realizing the opening or closing of the valve.

[0043] During the manufacturing process of the cold core sand core, it is necessary to heat the catalyst. Therefore, a heater 8 is also provided. The discharge end of the switching component 6 is connected to the first interface of a tee 7. The heater 8 is connected to the second interface of the tee through a first connecting pipe 9. The third interface of the tee 7 is connected to a catalytic gas conveying component 12 (such as a gas collecting hood) through a second connecting pipe 10.

[0044] In this example, the discharge end of the switching component 6 is connected to the tee 7 through a flange assembly, such as Figure 3As shown in the figure, the flange assembly includes a first flange 15 and a second flange 16 which are symmetrically arranged and fixedly connected. The first flange 15 has a first limiting portion 15-1 that matches the switch member 6, and the second flange 16 has a second limiting portion 16-1 that matches the tee 7. The first limiting portion 15-1 and the second limiting portion 16-1 are in communication with each other, and the first flange 15 and the second flange 16 are fixedly connected by bolts 17.

[0045] The working principle of the present utility model is as follows:

[0046] During the cold core process of the sand core, quantitative and heating of the catalyst are required. Manually open the switch valve 11 and the metering component 3, and at the same time turn on the heater 8. Open the switch member 6, and the metering component 3 starts metering. The metered catalyst drips to the position of the tee 7 via the needle member 4 and the switch member 6 (as Figure 1 shown). Close the switch member 6, and the hot air of the heater 8 blows into the vaporized catalyst (as Figure 2 shown), and the catalyst is transported to the catalytic gas transport component 12 to complete the addition of the catalyst;

[0047] During the inorganic process of the sand core, no catalyst needs to be added. Turn on the heater 8, close the switch valve 11 and the switch member 6, and the hot air blows into the second connecting pipe 10 to directly heat the sand core.

[0048] In summary, the addition device can improve the accuracy of catalyst metering, avoid the influence of heating on the addition device, meet the requirements of multi-process production, and reduce production costs.

[0049] The above examples are only for illustrating the technical concept and features of the present utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it accordingly, and it cannot be used to limit the protection scope of the present utility model. Any equivalent transformation or modification made according to the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A device for adding a trace amount of catalyst, characterized in that, Comprising: A catalyst container for storing a catalyst; A delivery pipeline connected to the discharge end of the catalyst container for delivering the catalyst; A metering component provided on the delivery pipeline for metering the catalyst; A needle component provided on the delivery pipeline and located downstream of the metering component for outputting the metered catalyst; A switching component provided at the discharge end of the delivery pipeline for opening or closing the delivery pipeline.

2. The adding device for trace catalyst according to claim 1, characterized in that: The delivery pipeline includes a first pipeline and a second pipeline arranged in sequence. The metering component is provided on the first pipeline. The needle component connects the first pipeline and the second pipeline. The switching component is connected to the second pipeline.

3. The adding device for trace catalyst according to claim 2, characterized in that: The diameter of the first pipeline is more than five times the diameter of the needle tube of the needle component.

4. The adding device for trace catalysts according to claim 2, characterized in that: The needle component is connected to the first pipeline via a first joint. The switching component is connected to the second pipeline via a second joint.

5. The addition device for trace catalysts according to claim 4, characterized in that: The switching component is a pneumatic ball valve. The valve body of the pneumatic ball valve is connected to the second pipeline via the second joint.

6. The addition device for trace catalysts according to claim 2, wherein: A switching valve is provided on the first pipeline between the catalyst container and the metering component.

7. The addition device for trace catalysts according to claim 1, characterized in that: It further includes a heater. The discharge end of the switching component is connected to the first interface of a tee. The heater is connected to the second interface of the tee via a first connecting pipe. The third interface of the tee is connected to a catalytic gas delivery component via a second connecting pipe.

8. The adding device for trace catalysts according to claim 7, characterized in that: The discharge end of the switching component is connected to the tee via a flange assembly.

9. The addition device for trace catalyst according to claim 8, characterized in that: The flange assembly includes a first flange plate and a second flange plate that are symmetrically arranged and fixedly connected. The first flange plate has a first limiting portion matching the switching component. The second flange plate has a second limiting portion matching the tee. The first limiting portion and the second limiting portion communicate with each other.

10. The addition device for trace catalyst according to claim 1, characterized in that: The metering component is a metering pump.

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