Dry powder quantitative conveying device

Abstract

The utility model discloses a dry powder quantitative conveying device which comprises a tank body, the tank body is communicated with a feeding device, and a level gage linked with the feeding device is arranged on the tank body. The tank body is communicated with a pipeline of the air supply device, and an exhaust valve linked with the air supply device is arranged on the tank body; a weighing sensor for weighing the tank body is arranged at the lower end of the tank body; the lower end of the tank body is provided with a discharge port, the discharge port is communicated with a conveying pipe through a discharge elbow, and the other pipeline of the air supply device is communicated with the discharge elbow. Forward airflow is provided for the tank body and the material conveying pipe, on the basis of induction of the weighing sensor, materials can be quantitatively conveyed outwards, the pipeline blockage problem of the conveyed materials is solved under driving of the airflow, the overall conveying efficiency is improved, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of titanium dioxide production equipment and relates to a dry powder quantitative conveying device. Background Art

[0002] In the current material transportation process, the materials in the drying tower are transported to the silo in front of the powder receiving machine by the negative pressure of the Roots blower. However, this method has many problems. First, the negative pressure transportation makes the pipeline very easy to be blocked, and dust will be emitted intermittently, which not only affects the normal production process, but also causes certain pollution to the environment. Secondly, due to the limitation of the conveying height, its conveying speed is slow and the efficiency is low. The maximum conveying capacity is only 1.3 ~ 1.5 tons / hour, which cannot meet the growing production needs. At the same time, high energy consumption also further increases production costs. These problems seriously restrict the smooth progress of production and the development of enterprises. How to effectively solve the pipeline blockage, improve the conveying efficiency and reduce energy consumption has become a technical problem that needs to be solved urgently. Utility Model Content

[0003] The utility model aims to provide a dry powder quantitative conveying device, which adopts a positive pressure conveying method to solve the pipeline blockage problem, improve the overall conveying efficiency and reduce energy consumption.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A dry powder quantitative conveying device comprises a tank body, the tank body is connected with a feeding device, a material level meter linked with the feeding device is arranged on the tank body; the tank body is connected with a pipeline of an air supply device, an exhaust valve linked with the air supply device is arranged on the tank body; a weighing sensor for weighing the tank body is arranged at the lower end of the tank body; the lower end of the tank body is a discharge port, the discharge port is connected with a conveying pipe through a discharge elbow, and another pipeline of the air supply device is connected with the discharge elbow.

[0006] As a further improvement of an embodiment of the utility model, a discharge valve is provided between the discharge elbow and the feed pipe or on the feed pipe.

[0007] As a further improvement of an embodiment of the utility model, a stop valve and a check valve are sequentially arranged on one pipeline of the air supply device.

[0008] As a further improvement of an embodiment of the utility model, a stop valve, a pneumatic butterfly valve and a check valve are sequentially arranged on another pipeline of the air supply device.

[0009] As a further improvement of an embodiment of the utility model, a pressure gauge and a check valve are provided on the tank body.

[0010] As a further improvement of one embodiment of the utility model, the feeding device includes a heat pulse box, the discharge port of the heat pulse box is connected to the inlet of the heat pulse auger, and the feed port of the heat pulse box is connected to the discharge port pipeline of the drying tower; the outlet of the heat pulse auger is connected to the feed port of the tank body through a pipeline, and a feed valve is provided at the feed port of the tank body.

[0011] As a further improvement of an embodiment of the utility model, a pulse dust collector is arranged in the thermal pulse box, and the pulse dust collector is close to the feed port side of the thermal pulse box and can absorb the material entering from the feed port.

[0012] As a further improvement of one embodiment of the utility model, an atomizer for placing materials is provided on the drying tower, a combustion chamber for providing hot air to the drying tower is provided on the outside of the drying tower, and an air outlet of the combustion chamber is connected to the drying tower through a pipeline.

[0013] As a further improvement of an embodiment of the utility model, the feed conveying pipe is connected to a pulse dust collector.

[0014] The above technical scheme has the following beneficial effects: by providing positive airflow to the tank body and the material conveying pipe, the material can be quantitatively conveyed to the outside based on the induction of the weighing sensor, and the conveyed material can solve the pipeline blockage problem driven by the airflow. The conveying process is lossless and has high control accuracy. The conveying efficiency is improved from the original 1.3~1.5t / h to 2.5t / h; the original Roots blower is cancelled, which can effectively reduce electricity consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0017] Figure 1 This is a structural schematic diagram provided by the utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the utility model applied on a production line.

[0019] In the figure: 1-pulse dust collector; 2-combustion chamber; 3-atomizer; 4-drying tower; 5-thermal pulse box; 6-induced draft fan; 7-dry powder quantitative conveying device; 8-thermal pulse auger; 9-solenoid valve group;

[0020] 71-tank body; 711-support leg; 712-level meter; 713-exhaust valve; 714-feeding valve; 715-pressure gauge; 716-weighing sensor;

[0021] 72-gas transmission pipe; 721, 722-pipeline; 723, 725-stop valve; 724, 727-check valve; 726-pneumatic butterfly valve;

[0022] 73-discharging elbow;

[0023] 74-feeding pipe;

[0024] 75-Discharge valve. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention. Example

[0028] See also Figure 1 As shown, a dry powder quantitative conveying device includes a tank body 71, and a feeding valve 714 is provided on the tank body 71 to communicate with the feeding device for feeding materials into the tank body 71. A material level meter 712 linked with the feeding device is provided on the tank body 71 to count the height of the material in the tank body 71. When the material level meter 712 senses that the material height in the tank body 71 is lower than a set threshold, the material starts to be fed into the tank body 71; when the material level meter 712 senses that the material height in the tank body 71 is lower than the set threshold, the material stops feeding into the tank body 71.

[0029] An air supply device is provided outside the tank body 71, and the air supply device includes an air supply pipe 72, which is connected to an air source. The air supply pipe 72 is connected to two pipelines, one of which is connected to the upper end of the tank body 71 upwards, and is used to supply air to the tank body. A stop valve 723 and a check valve 724 are provided on the pipeline 721.

[0030] The lower end of the tank 71 is a discharge port, which is connected to the feed pipe 74 through a discharge elbow 73. Another pipeline 722 of the air delivery device is connected to the discharge elbow 73, wherein a stop valve 725, a pneumatic butterfly valve 726 and a check valve 727 are sequentially arranged on the pipeline 722. Figure 1 The direction of the arrow in the middle is the direction of air flow or material flow.

[0031] In this embodiment, a discharge valve 75 is provided on the material delivery pipe 74, and of course, the discharge valve 75 can also be installed between the discharge elbow 73 and the material delivery pipe 74. The discharge valve 75 is used to control the release of the material in the tank 71, and by adding the air pressure provided by one air flow at the discharge elbow 73, the material accumulation and clogging of the discharge elbow 73 can be avoided.

[0032] In this embodiment, an exhaust valve 713 linked to the air supply device is provided on the tank body 71. When the pressure in the tank body 71 exceeds a certain threshold, the exhaust valve 713 opens to discharge the pressure in the tank body 71, so that the pressure in the tank body 71 is within a reasonable range. Under normal circumstances, the exhaust valve 713 is always in a closed state and is opened only when the pressure in the tank body 71 exceeds the threshold; when the pressure in the tank body 71 returns to a reasonable threshold, the exhaust valve 713 will automatically close.

[0033] In this embodiment, a support leg 711 is provided below the tank body 71 for supporting the tank body 71 on the ground. A weighing sensor 716 is provided between the support leg 711 and the tank body 71 for weighing the tank body 71.

[0034] In order to facilitate the on-site personnel to observe the pressure in the tank, a pressure gauge 715 is provided on the tank 71. At the same time, in order to facilitate the on-site personnel to enter the tank for maintenance, a maintenance valve is provided on the tank 71. During maintenance, the on-site personnel manually open the maintenance valve to enter the tank 71 for maintenance.

[0035] The dry powder quantitative conveying device 7 is automatically controlled by a PLC controller. When in use, when the material entering the tank body 71 reaches the set weight, the stop valve is opened at the same time, the discharge elbow 73 and the tank body 71 are pressurized with air, and the discharge valve 75 is opened at the same time. Under the action of double pressure, the material can be smoothly discharged from the conveying pipe 74. At the same time, the weighing sensor 716 senses the weight change of the tank body in real time, and closes the discharge valve 75 and the stop valve when it detects that the weight of the tank body 71 reaches the set value. By providing a positive airflow to the tank body 71 and the conveying pipe 74, based on the induction of the weighing sensor 716, the material can be quantitatively conveyed to the outside, and the conveyed material can solve the problem of pipeline blockage under the drive of the airflow. The conveying process is lossless and the control accuracy is high, and the conveying efficiency is improved, from the original 1.3~1.5t / h to 2.5t / h.

[0036] like Figure 2 As shown, the feeding device includes a heat pulse box 5, the discharge port of the heat pulse box 5 is connected to the inlet of the heat pulse auger 8, the feed port of the heat pulse box 5 is connected to the discharge port pipeline of the drying tower 4, and the outlet of the heat pulse auger is connected to the feeding valve 714 on the dry powder quantitative conveying device 7 through a pipeline. A pulse dust collector is arranged in the heat pulse box 5, and the pulse dust collector is close to the feed port side of the heat pulse box 5; the heat pulse box 5 is connected to the external induced draft fan 6 through a pipeline, and negative pressure is provided to the pulse dust collector, so that the pulse dust collector can absorb the material entering the heat pulse box 5. A solenoid valve group 9 is arranged on the heat pulse box 5, and the electromagnetic pneumatic valve on the solenoid valve group 9 sprays the pulse dust collector in a timed and quantitative manner according to the PLC, so that the material on it settles into the heat pulse auger 8.

[0037] In this embodiment, the drying tower 4 is provided with an atomizer 3 for placing materials, and the outside of the drying tower 4 is provided with a combustion chamber 2 for providing hot air to the drying tower 4, wherein the gas outlet of the combustion chamber 2 is connected to the drying tower 4 through a pipeline. Natural gas is burned in the combustion chamber 2 to form hot air, which is blown into the drying tower 4 through the combustion-supporting fan of the damper, and contacts with the materials in the atomizer 3 at high temperature, so that the moisture of the materials evaporates. The materials sink into the heat pulse box 5 through the induced draft fan 6 and their own gravity.

[0038] After being quantitatively distributed by the dry powder quantitative conveying device 7, the material is transported to the pulse dust collector 1 through air compression, and part of the dust is sprayed to the bottom of the cone through the pulse dust collector 1 to enter the next process.

[0039] The utility model cancels the original Roots blower (Roots blower is 18.5kw), and adopts a positive airflow to provide the tank and the conveying pipe. Based on the induction of the weighing sensor, it can quantitatively convey materials to the outside, and the conveyed materials can solve the pipeline blockage problem under the drive of the airflow. The conveying process is lossless and the control accuracy is high. The conveying efficiency is improved from the original 1.3~1.5t / h to 2.5t / h; it can effectively reduce electricity consumption, and the electricity consumption is saved by 400kwh per day. The use of positive pressure airflow makes the pipeline less likely to be blocked, avoids intermittent dust caused by blockage, reduces dust pollution, and reduces harm to people and the environment.

[0040] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0043] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A dry powder quantitative delivery device, characterized in that: It includes a tank body, which is connected to a feeding device, and is provided with a level meter linked to the feeding device; the tank body is connected to a pipeline of an air supply device, and is provided with an exhaust valve linked to the air supply device; a weighing sensor for weighing the tank body is provided at the lower end of the tank body; the lower end of the tank body is a discharge port, which is connected to a feed pipe through a discharge elbow, and another pipeline of the air supply device is connected to the discharge elbow.

2. The dry powder quantitative delivery device according to claim 1, characterized in that: A discharge valve is arranged between the discharge elbow and the feed pipe or on the feed pipe.

3. The dry powder quantitative delivery device according to claim 2, characterized in that: A stop valve and a check valve are arranged in sequence on one pipeline of the air supply device.

4. The dry powder quantitative delivery device according to claim 2, characterized in that: A stop valve, a pneumatic butterfly valve and a check valve are arranged in sequence on the other pipeline of the air supply device.

5. The dry powder quantitative delivery device according to claim 1, characterized in that: The tank body is provided with a pressure gauge and a check valve.

6. The dry powder quantitative delivery device according to claim 1, characterized in that: The feeding device comprises a heat pulse box, the discharge port of the heat pulse box is connected to the inlet of the heat pulse auger, and the feed port of the heat pulse box is connected to the discharge port pipeline of the drying tower; the outlet of the heat pulse auger is connected to the feed port of the tank body through a pipeline, and a feed valve is arranged at the feed port of the tank body.

7. The dry powder quantitative delivery device according to claim 6, characterized in that: A pulse dust collector is arranged in the thermal pulse box, and the pulse dust collector is close to the feed inlet side of the thermal pulse box, and can absorb the materials entering from the feed inlet.

8. The dry powder quantitative delivery device according to claim 6, characterized in that: The drying tower is provided with an atomizer for placing materials, and the outer side of the drying tower is provided with a combustion chamber for providing hot air into the drying tower, and the air outlet of the combustion chamber is connected with the drying tower through a pipeline.

9. The dry powder quantitative delivery device according to claim 1, characterized in that: The material conveying pipe is connected with the pulse dust collector.

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