Negative pressure and positive pressure combined conveying equipment

Abstract

The utility model provides negative pressure and positive pressure combined conveying equipment which comprises a material bin, a negative pressure conveying mechanism, a positive pressure conveying mechanism and a receiving bin. The material bins are arranged at the initial conveying positions of the negative-pressure and positive-pressure combined conveying equipment, the material bins are fixed to the fixed truss, the bottom of any material bin is connected with the adapter, and the adapters are installed on the same negative-pressure material pipeline in series; the negative pressure conveying structure is used for conveying materials from the material bin to the buffer storage bin in a negative pressure mode, and the negative pressure conveying structure is connected with the material bin through a negative pressure material pipeline; the positive pressure conveying mechanism is used for conveying the buffering stock bin to the receiving stock bin in a positive pressure mode, and the negative pressure conveying mechanism and the buffering stock bin are connected through a positive pressure material pipeline. According to the negative pressure and positive pressure combined conveying equipment, the conveying efficiency of materials is remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the field of automatic conveying, and particularly relates to a combined negative-pressure and positive-pressure conveying device. Background Art

[0002] In industries such as pharmaceuticals, food, and chemicals, the conveying of materials is an important link in the production process. The negative-pressure and positive-pressure combined sending system is a pneumatic conveying system that combines the working principles of negative pressure and positive pressure. This system can make full use of the respective advantages of negative-pressure and positive-pressure conveying to achieve more efficient and flexible conveying of materials.

[0003] Currently, traditional material conveying methods often have problems such as low efficiency, high energy consumption, and easy pollution. To solve these problems, a variety of material conveying technologies have emerged in the market, but most technologies are difficult to meet the requirements of multi-source conveying, precise distribution, and high energy efficiency at the same time. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a combined negative-pressure and positive-pressure conveying device to solve the problems of low efficiency, high energy consumption, and easy pollution in traditional material conveying methods, and it is difficult to meet the requirements of multi-source conveying, precise distribution, and high energy efficiency at the same time.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] The utility model provides a combined negative-pressure and positive-pressure conveying device, including a material bin 1, a negative-pressure conveying mechanism, a positive-pressure conveying mechanism, and a receiving bin 12; the material bin 1 is the starting conveying position of the combined negative-pressure and positive-pressure conveying device, the material bin 1 is fixed on a fixed truss, several material bins 1 are provided, and the bottom of any material bin 1 is connected to an adapter 2, and the adapters 2 are serially installed on the same negative-pressure material pipeline 3; the negative-pressure conveying structure is used to convey materials from the material bin 1 to the buffer bin 6 in a negative-pressure manner, and the negative-pressure conveying structure is connected to the material bin 1 through the negative-pressure material pipeline 3; the positive-pressure conveying mechanism is used to convey the buffer bin 6 to the receiving bin 12 in a positive-pressure manner, and the negative-pressure conveying mechanism is connected to the buffer bin 6 through the positive-pressure material pipeline 9.

[0007] Furthermore, the negative-pressure conveying mechanism includes a negative-pressure material pipeline 3, an adapter 2, a vacuum source interface 4, a vacuum loader 5, a buffer bin 6, and a buffer bin installation truss. One end of the negative-pressure material pipeline 3 is connected to the vacuum loader 5, and the other end is connected to the adapter 2. The vacuum loader 5 is arranged on the buffer bin 6. The negative-pressure material pipeline 3 is connected to the vacuum loader 5. A vacuum source interface 4 is provided on the vacuum loader 5, and a vacuum source interface valve is provided at the vacuum source interface 4. The vacuum source interface 4 is connected to a vacuum source. The buffer bin 6 is fixed on the buffer bin installation truss. The feed port at the top of the buffer bin 6 is connected to the discharge port at the bottom of the vacuum loader 5, and the discharge port at the bottom of the buffer bin 6 is connected to a positive-pressure material pipeline 9.

[0008] Furthermore, a filter 14, a reverse air injection bag 13, and a rotary air lock 15 are provided on the vacuum loader 5. The reverse air injection bag 13 is used to store compressed air. The reverse air injection bag 13 is connected to a timer. The filter 14 is used to filter compressed air. The filter 14 is arranged on the left side of the vacuum loader 5 and is connected to the vacuum loader 5 through a pipeline. The rotary air lock 15 is arranged at the bottom of the vacuum loader 5 for material conveying.

[0009] Furthermore, a buffer bin valve 16, a buffer bin rotary air lock 17, and a positive-pressure adapter 18 are successively arranged at the lower part of the buffer bin 6. The lower part of the buffer bin 6 is funnel-shaped. A buffer bin valve 16 is provided at the discharge port of the buffer bin 6. The buffer bin valve 16 is bolted to the buffer bin rotary air lock 17, and the positive-pressure adapter 18 is bolted to the buffer bin rotary air lock 17.

[0010] Furthermore, a material detection sensor for detecting the material input amount is arranged inside the buffer bin 6. The material detection sensor is connected to the vacuum source interface valve and the Roots blower 7.

[0011] Furthermore, the material detection sensor is a level gauge or a load cell.

[0012] Furthermore, the vacuum source includes a vortex air pump, a Roots blower, or a water ring vacuum pump.

[0013] Further, the positive-pressure conveying mechanism includes a Roots blower 7, a rotary air lock valve and an adapter 8, a positive-pressure material pipeline 9, a three-way reversing valve 10, a dust collector on the top of the bin 11, and a receiving bin 12; the Roots blower 7 is fixed to the buffer bin installation truss, and the Roots blower 7 is connected to the buffer bin valve 16. The rotary air lock valve and the adapter 8 include a buffer bin rotary air lock valve 17 and a positive-pressure adapter 18. One end of the positive-pressure adapter 18 is connected to the Roots blower 7 through a pipeline, and the other end of the positive-pressure adapter 18 is connected to the receiving bin 12 through the positive-pressure material pipeline 9. The dust collector on the top of the bin 11 is provided at the top of the receiving bin 12, and a filtering and back-blowing system is provided inside the receiving bin 12; the filtering and back-blowing system includes a filter, an air compressor, and a dust collector. The receiving bin 12 is provided with a dust collector exhaust port, and the dust collector is connected to the dust collector exhaust port. The air compressor is externally connected to an air tank.

[0014] Further, when there are several receiving bins 12, a three-way reversing valve 10 for switching is provided on the positive-pressure material pipeline 9 between the positive-pressure adapter 18 and the receiving bin 12.

[0015] Compared with the prior art, the negative-pressure and positive-pressure combined conveying equipment of the present utility model has the following advantages:

[0016] (1) The materials of the present utility model are efficiently and safely conveyed from multiple scattered material bins to the buffer bin through negative pressure, and then the materials are distributed to the designated receiving bin by using the positive-pressure blowing technology. The combination of negative pressure and positive pressure can significantly improve the conveying efficiency of the materials, realize multi-source conveying, and make the conveying equipment more reasonable.

[0017] (2) The compressed air stored in the back-blowing air bag 13 of the vacuum feeder 5 in the present utility model is released regularly according to the setting of the timer to back-blow the filter 14, realizing online automatic cleaning.

[0018] (3) A level gauge or a weighing sensor is provided in the buffer bin 6 of the present utility model to feedback a high-level signal. When the materials reach the high level or reach the set value of the weighing sensor, the negative-pressure and positive-pressure combined conveying equipment stops feeding, that is, closes the vacuum source interface valve, thereby avoiding material overflow.

[0019] (4) A dust collector on the top of the bin 11 is provided at the top of the receiving bin 12 of the present utility model, and a filtering and back-blowing system is provided inside. After the materials enter the bin, the materials and dust are blocked by the filter, and the compressed air passes through the filtering system and is discharged from the dust collector exhaust port, and the materials fall into the bin, thus completing the conveying process. Description of the Drawings

[0020] The accompanying drawings, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0021] In the accompanying drawings:

[0022] Figure 1 is the overall schematic diagram of the negative-pressure and positive-pressure combined conveying equipment described in the embodiment of the present utility model;

[0023] Figure 2 is the partial structural schematic diagram of the vacuum feeding in the negative-pressure and positive-pressure combined conveying equipment described in the embodiment of the present utility model;

[0024] Figure 3 is the installation schematic diagram of the bottom of the buffer bin in the negative-pressure and positive-pressure combined conveying equipment described in the embodiment of the present utility model.

[0025] Description of the reference numerals:

[0026] 1. Material bin; 2. Adapter; 3. Negative-pressure material pipeline; 4. Vacuum source interface; 5. Vacuum feeder; 6. Buffer bin; 7. Roots blower; 8. Shut-off blower and adapter; 9. Positive-pressure material pipeline; 10. Three-way changeover valve; 11. Bag filter on top of bin; 12. Receiving bin; 13. Reverse blowing air bag; 14. Filter; 15. Shut-off valve; 16. Buffer bin valve; 17. Buffer bin shut-off valve; 18. Positive-pressure adapter. Detailed implementation manners

[0027] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0031] Referring to Figures 1-3 As shown, this embodiment provides a combined negative-pressure and positive-pressure conveying device, including a material bin 1, a negative-pressure conveying mechanism, a positive-pressure conveying mechanism, and a receiving bin 12; the material bin 1 is the starting conveying position of the combined negative-pressure and positive-pressure conveying device, the material bin 1 is fixed on a fixed truss, and a plurality of material bins 1 are provided. An adapter 2 is connected to the bottom of any material bin 1, and the adapters 2 are serially installed on the same negative-pressure material pipeline 3; the negative-pressure conveying structure is used to convey materials from the material bin 1 to the buffer bin 6 in a negative-pressure manner, and the negative-pressure conveying structure is connected to the material bin 1 through the negative-pressure material pipeline 3; the positive-pressure conveying mechanism is used to convey the buffer bin 6 to the receiving bin 12 in a positive-pressure manner, and the negative-pressure conveying mechanism is connected to the buffer bin 6 through the positive-pressure material pipeline 9.

[0032] In the embodiment, materials are efficiently and safely conveyed from multiple scattered material bins to the buffer bin in a negative-pressure manner, and then the materials are distributed to the designated receiving bin by using the positive-pressure blowing technology. The combination of negative pressure and positive pressure can significantly improve the conveying efficiency of the materials, realize multi-source conveying, and make the conveying device more reasonable.

[0033] Specifically, in this embodiment, the negative-pressure conveying mechanism includes a negative-pressure material pipeline 3, an adapter 2, a vacuum source interface 4, a vacuum loader 5, a buffer bin 6, and a buffer bin installation truss; one end of the negative-pressure material pipeline 3 is connected to the vacuum loader 5, and the other end is connected to the adapter 2; the vacuum loader 5 is arranged on the buffer bin 6, the negative-pressure material pipeline 3 is connected to the vacuum loader 5, a vacuum source interface 4 is provided on the vacuum loader 5, the vacuum source interface 4 is connected to a vacuum source, a vacuum source interface valve is provided at the vacuum source interface 4, the buffer bin 6 is fixed on the buffer bin installation truss, the feed port at the top of the buffer bin 6 is connected to the discharge port at the bottom of the vacuum loader 5, and the discharge port at the bottom of the buffer bin 6 is connected to the positive-pressure material pipeline 9.

[0034] In the embodiment, the negative-pressure conveying mechanism: connect the vacuum source to form a negative pressure inside the vacuum loader 5 and in the conveying pipeline. Under the action of the negative pressure, the material is sucked into the negative-pressure material pipeline 3 and enters the vacuum loader 5 for conveying to the buffer bin 6, and the buffer bin 6 serves as a transfer bin to temporarily store the material.

[0035] Specifically, in this embodiment, the vacuum loader 5 is provided with a filter 14, a reverse air injection bag 13, and a rotary air lock 15. The reverse air injection bag 13 is used to store compressed air, and the reverse air injection bag 13 is connected with a timer. The filter 14 is used to filter the compressed air. The filter 14 is arranged on the left side of the vacuum loader 5 and is connected to the vacuum loader 5 through a pipeline. The rotary air lock 15 is arranged at the bottom of the vacuum loader 5 for material conveying.

[0036] In the embodiment, the reverse air injection bag 13 of the vacuum loader 5 stores compressed air with a pressure of 0.4 - 0.6 MPa, and releases the compressed air regularly according to the setting of the timer to blow back the filter 14 to achieve online automatic cleaning. The rotary air lock 15 at the bottom of the vacuum loader 5 realizes continuous material conveying.

[0037] Specifically, in this embodiment, a buffer bin valve 16, a buffer bin rotary air lock 17, and a positive-pressure adapter 18 are successively arranged at the lower part of the buffer bin 6. The lower part of the buffer bin 6 is funnel-shaped. A buffer bin valve 16 is arranged at the discharge port of the buffer bin 6. The buffer bin valve 16 is bolted to the buffer bin rotary air lock 17, and the positive-pressure adapter 18 is bolted to the buffer bin rotary air lock 17.

[0038] Specifically, in this embodiment, a material detection sensor for detecting the material input amount is arranged in the buffer bin 6, and the material detection sensor is connected to the vacuum source interface valve and the Roots blower 7.

[0039] Specifically, in this embodiment, the material detection sensor is a level gauge or a load cell.

[0040] In the embodiment, the buffer bin 6 is provided with a level gauge or a weighing sensor for feeding back a high-level signal. When the material reaches the high level or reaches the set value of the weighing sensor, the negative-pressure and positive-pressure combined conveying device stops feeding, that is, closes the vacuum source interface valve, thereby avoiding material overflow.

[0041] Specifically, in this embodiment, the vacuum source includes a vortex air pump or a Roots blower or a water ring vacuum pump.

[0042] In the embodiment, after the material in the buffer bin 6 reaches the preset amount, the vacuum source interface valve is closed to stop the negative-pressure conveying. The vacuum source interface of the loader 5 can be connected to vacuum sources such as a vortex air pump, a Roots blower, and a water ring vacuum pump group to provide power for the negative-pressure system.

[0043] Specifically, in this embodiment, the positive pressure conveying mechanism includes a Roots blower 7, a rotary air lock valve and an adapter 8, a positive pressure material pipeline 9, a three-way reversing valve 10, a dust collector on the top of the bin 11, and a receiving bin 12; the Roots blower 7 is fixed to the buffer bin installation truss, and the Roots blower 7 is connected to the buffer bin valve 16. The rotary air lock valve and the adapter 8 include a buffer bin rotary air lock valve 17 and a positive pressure adapter 18. One end of the positive pressure adapter 18 is connected to the Roots blower 7 through a pipeline, and the other end of the positive pressure adapter 18 is connected to the receiving bin 12 through the positive pressure material pipeline 9. A dust collector on the top of the bin 11 is provided at the top of the receiving bin 12, and a filtering and back-blowing system is provided inside the receiving bin 12; the filtering and back-blowing system includes a filter, an air compressor, and a dust collector. The receiving bin 12 is provided with a dust collector exhaust port, and the dust collector is connected to the dust collector exhaust port. The air compressor is externally connected to an air tank.

[0044] Positive pressure conveying mechanism: Start the Roots blower 7 and open the buffer bin valve 16. After the material enters the positive pressure adapter 18, it is conveyed to the receiving bin 12 through the positive pressure material pipeline 9 under the action of positive pressure. A dust collector on the top of the bin 11 is provided in the upper part of the receiving bin 12 to ensure effective separation of the material and the gas, and the material falls into the receiving bin 12.

[0045] Specifically, in this embodiment, when there are several receiving bins 12, a three-way reversing valve 10 for switching is provided on the positive pressure material pipeline 9 between the positive pressure adapter 18 and the receiving bin 12.

[0046] Operating principle of the negative pressure and positive pressure combined conveying equipment: The vacuum feeder 5 is installed on the buffer bin 6, and the feeder is provided with a vacuum source interface. The vacuum source provides power for the negative pressure conveying process; the material is sucked into the vacuum feeder 5 through the negative pressure material pipeline 3 under the action of negative pressure and then sent into the buffer bin 6. The buffer bin 6 is provided with a level gauge or a weighing sensor for feeding back a high level signal. When the material reaches the high level or reaches the set value of the weighing sensor, the negative pressure and positive pressure combined conveying equipment stops feeding, that is, closes the vacuum source interface valve. Start the Roots blower 7 and open the buffer bin valve 16 to blow the material along the positive pressure material pipeline 9 to the receiving bin 12. If there are several receiving bins 12, the pipeline between multiple bins is switched using the three-way reversing valve 10.

[0047] A dust collector on the top of the bin 11 is provided at the top of the receiving bin 12, and a filtering and back-blowing system is provided inside. After the material enters the receiving bin 12, the material and dust are blocked by the filter, and the compressed air passes through the filter and is discharged from the dust collector exhaust port. The material falls into the bin, thus completing the conveying process.

[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Negative pressure and positive pressure combined conveying equipment, characterized in that: The invention comprises a material silo (1), a negative pressure conveying mechanism, a positive pressure conveying mechanism, and a receiving silo (12); the material silo (1) is the starting conveying position of the negative pressure and positive pressure combined conveying equipment, the material silo (1) is fixed on a fixed truss, and the material silo (1) is provided with a plurality of them, and the bottom of any material silo (1) is connected to an adapter (2), and the adapters (2) are installed in series on the same negative pressure material pipeline (3); the negative pressure conveying mechanism is used to convey the material from the material silo (1) to the buffer silo (6) under negative pressure, and the negative pressure conveying mechanism is connected to the material silo (1) through the negative pressure material pipeline (3); the positive pressure conveying mechanism is used to convey the buffer silo (6) to the receiving silo (12) under positive pressure, and the negative pressure conveying mechanism is connected to the buffer silo (6) through the positive pressure material pipeline (9).

2. The negative pressure and positive pressure combined conveying equipment according to claim 1, characterized in that: The negative pressure conveying mechanism comprises a negative pressure material pipeline (3), an adapter (2), a vacuum source interface (4), a vacuum loader (5), a buffer silo (6), and a buffer silo mounting truss; one end of the negative pressure material pipeline (3) is connected to the vacuum loader (5), and the other end is connected to the adapter (2); the vacuum loader (5) is arranged on the buffer silo (6), the negative pressure material pipeline (3) is connected to the vacuum loader (5), a vacuum source interface (4) is provided on the vacuum loader (5), the vacuum source interface (4) is connected to a vacuum source, a vacuum source interface valve is provided at the vacuum source interface (4), the buffer silo (6) is fixed on the buffer silo mounting truss, the feed port at the top of the buffer silo (6) is connected to the discharge port at the bottom of the vacuum loader (5), and the discharge port at the bottom of the buffer silo (6) is connected to the positive pressure material pipeline (9).

3. The negative pressure and positive pressure combined conveying equipment according to claim 2, characterized in that: The vacuum feeder (5) is provided with a filter (14), a back-blowing air bag (13), and a fan (15); the back-blowing air bag (13) is used to store compressed air; the back-blowing air bag (13) is connected to a timer; the filter (14) is used to filter compressed air; the filter (14) is arranged on the left side of the vacuum feeder (5) and is connected to the vacuum feeder (5) through a pipeline; the fan (15) is arranged at the bottom of the vacuum feeder (5) for material transportation.

4. The negative pressure and positive pressure combined conveying equipment according to claim 3, characterized in that: The lower part of the buffer silo (6) is provided with a buffer silo valve (16), a buffer silo closing fan (17), and a positive pressure adapter (18) in sequence. The lower part of the buffer silo (6) is funnel-shaped. The outlet of the buffer silo (6) is provided with a buffer silo valve (16). The buffer silo valve (16) is bolted to the buffer silo closing fan (17). The positive pressure adapter (18) is bolted to the buffer silo closing fan (17).

5. The negative pressure and positive pressure combined conveying equipment according to claim 4, characterized in that: A material detection sensor for detecting the amount of material input is provided in the buffer silo (6), and the material detection sensor is connected to a vacuum source interface valve and a Roots blower (7).

6. The negative pressure and positive pressure combined conveying equipment according to claim 5, characterized in that: The material detection sensor is a material level meter or a load-bearing sensor.

7. The negative pressure and positive pressure combined conveying equipment according to claim 5, characterized in that: The vacuum source includes a vortex air pump, a Roots blower or a water ring vacuum pump.

8. The negative pressure and positive pressure combined conveying equipment according to claim 5, characterized in that: The positive pressure conveying mechanism comprises a Roots blower (7), a blower shut-off fan and adapter (8), a positive pressure material pipeline (9), a three-way reversing valve (10), a silo top dust collector (11), and a receiving silo (12); the Roots blower (7) is fixed to the buffer silo mounting truss, the Roots blower (7) is connected to the buffer silo valve (16), the blower shut-off fan and adapter (8) comprises a buffer silo blower shut-off fan (17), a positive pressure adapter (18), one end of the positive pressure adapter (18) is connected to the Roots blower (7) ) is connected to the receiving silo (12) through a pipeline, the other end of the positive pressure adapter (18) is connected to the receiving silo (12) through the positive pressure material pipeline (9), the top of the receiving silo (12) is provided with the silo top dust collector (11), and the receiving silo (12) is provided with a filtering and back-blowing system; the filtering and back-blowing system includes a filter, an air compressor, and a dust collector, the receiving silo (12) is provided with a dust collector exhaust port, the dust collector is connected to the dust collector exhaust port, and the air compressor is externally connected to an air tank.

9. The negative pressure and positive pressure combined delivery device according to claim 8, characterized in that: When there are multiple receiving silos (12), a three-way reversing valve (10) for switching is provided on the positive pressure material pipeline (9) between the positive pressure adapter (18) and the receiving silo (12).

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