Airtight negative pressure conveying device

Abstract

The utility model discloses an airtight type negative pressure conveying device which comprises a negative pressure transmitting tank. The conveying pipeline is communicated and connected with the negative pressure launching tank; the air supply structure is provided with at least one air supply output end, and the at least one air supply output end of the air supply structure is communicated, assembled and connected with the negative pressure launching tank and the conveying pipeline; the air supply valve is connected and assembled to at least one air supply output end in an openable and closable manner; and the exhaust valve is connected with the interior of the negative pressure emission tank in an openable and closable communication assembly manner. The technical problems that in the prior art, a negative pressure system is prone to deterioration and direct scrapping when conveying special powder materials, the relation between the material capacity and air supply balance needs to be continuously adjusted, the debugging process is tedious, and the failure rate of a production line is high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder negative pressure conveying, in particular to an airtight negative pressure conveying device. Background Art

[0002] At present, with the rapid development of the powder material industry, negative pressure conveying systems are widely used in the industry due to their advantages of small footprint and low cost. In order to balance the internal pressure of the pipeline, the traditional negative pressure conveying system must be in contact with the outside air to achieve the purpose of air replenishment and exhaust.

[0003] At present, for special powder materials, due to their easy oxidation and easy water absorption, the traditional negative pressure system will easily deteriorate and be directly scrapped after being transported in contact with the outside air, causing significant economic losses and even dangerous accidents. At the same time, with the diversification of production line products and the complexity of operating conditions, higher requirements are put forward for the applicability of negative pressure transportation. The traditional negative pressure transportation system needs to constantly adjust the balance between material production capacity and air supply, the debugging process is cumbersome, and the production line failure rate is high. Utility Model Content

[0004] To this end, the utility model provides an airtight negative pressure conveying device to solve the technical problems that the negative pressure system in the prior art is prone to deterioration and direct scrapping when conveying special powder materials, and that the material production capacity and air supply balance relationship need to be constantly adjusted, the debugging process is cumbersome, and the production line failure rate is high.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An airtight negative pressure conveying device, comprising:

[0007] Negative pressure launch tank;

[0008] A delivery pipeline is connected to the negative pressure launch tank;

[0009] The air supply structure has at least one air supply output end, and the at least one air supply output end of the air supply structure is connected and assembled with the negative pressure launch tank and the delivery pipeline respectively;

[0010] An air supply valve, which can be opened and closed, is installed at at least one of the air supply output ends;

[0011] The exhaust valve is connected to the openable and closable connection assembly inside the negative pressure launch tank.

[0012] On the basis of the above technical solution, the utility model is further described as follows:

[0013] As a further solution of the present invention, the negative pressure launch tank is configured as a conical and / or cylindrical and / or truncated cone closed structure.

[0014] As a further solution of the utility model, it also includes:

[0015] The air pressure sensor is fixedly assembled on the negative pressure launching tank, and the probe end of the air pressure sensor is correspondingly arranged inside the negative pressure launching tank.

[0016] As a further solution of the utility model, it also includes:

[0017] The electric control structure controls the input end of the air pressure sensor to be connected via a circuit.

[0018] As a further solution of the utility model, the electric control structure includes a power module and a control module connected by a circuit;

[0019] The control input end of the control module is connected to the air pressure sensor via a circuit;

[0020] The control output end of the control module is respectively connected to the air supply valve and the exhaust valve through a circuit.

[0021] As a further solution of the utility model, the air supply structure includes an air source, an air supply pipeline and an air supply connector end;

[0022] The output end of the gas source is connected to at least three gas supply pipelines, and the at least three gas supply pipelines are connected to at least three groups of gas supply connector ends in a one-to-one correspondence;

[0023] At least three groups of the gas replenishing connector ends are respectively connected and assembled with the inside of the negative pressure launching tank, the inside of one end of the delivery pipeline close to the negative pressure launching tank, the middle inside of the delivery pipeline and the inside of one end away from the negative pressure launching tank as the gas replenishing output ends.

[0024] As a further solution of the utility model, at least three groups of the air supply valves are provided, and at least three groups of the air supply valves are one-to-one correspondingly openable and closable connected and assembled in at least three of the air supply pipelines.

[0025] As a further solution of the utility model, the exhaust valve is configured as a one-way valve.

[0026] As a further solution of the utility model, the conveying pipeline is connected and assembled to the bottom of the negative pressure launching tank.

[0027] The utility model has the following beneficial effects:

[0028] 1. The device can effectively complete the established negative pressure feeding function through the cooperation of the negative pressure launch tank and the conveying pipeline. At the same time, it can use the air pressure sensor to cooperate with the electronic control structure to monitor the pressure changes inside the negative pressure launch tank in real time. After further signal analysis and parameter setting, the electronic control structure transmits signals to control and adjust the opening size of the air supply valve based on the air intake of the air supply structure and the exhaust valve exhaust. It effectively ensures that the pressure inside the negative pressure launch tank is balanced within the set range and prevents external air from entering the system, so that the material can always be isolated from the outside air and is in a gas protection state during the transportation process.

[0029] 2. The device has strong application adaptability and can fully automatically control the balance of supply and exhaust gas in the system without the need for manual adjustment by operators. The overall operation is simple, which significantly improves the overall functional practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for the implementation methods or the description of the prior art will be briefly introduced below. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the utility model without affecting the effects and purposes that can be achieved by the utility model.

[0031] Figure 1 A schematic diagram of the overall structure of the airtight negative pressure delivery device provided in an embodiment of the utility model.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Negative pressure launch tank; 2. Delivery pipeline; 3. Air pressure sensor; 4. Electric control structure;

[0034] 5. Air supply structure: 51. Air source; 52. Air supply pipeline; 53. Air supply connector end;

[0035] 6. Air supply valve; 7. Exhaust valve. DETAILED DESCRIPTION

[0036] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The terms such as "upper", "lower", "left", "right", and "middle" used in this specification are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships shall be deemed to be within the scope of the present invention without substantially changing the technical content.

[0038] like Figure 1 As shown, the embodiment of the utility model provides an airtight negative pressure conveying device, including a negative pressure launch tank 1, a conveying pipeline 2, an air pressure sensor 3, an electric control structure 4, an air supply structure 5, an air supply valve 6 and an exhaust valve 7, which are used to effectively complete the established negative pressure feeding function through the cooperation of the negative pressure launch tank 1 and the conveying pipeline 2, and at the same time, the air pressure sensor 3 can be used to cooperate with the electric control structure 4 to monitor the pressure changes inside the negative pressure launch tank 1 in real time, and after further signal analysis and parameter setting, the electric control structure 4 transmits signals to control and adjust the opening size of the air supply valve 6 based on the air intake of the air supply structure 5 and the exhaust of the exhaust valve 7, which effectively ensures that the pressure inside the negative pressure launch tank 1 is balanced within the set range, and can prevent external air from entering the system, thereby allowing the material to always be isolated from the outside air and be in a gas protection state during the conveying process; the device has strong application adaptability, can fully automatically control the balance of air supply and exhaust in the system, without the need for manual adjustment by the operator, the overall operation is simple, and the function is highly practical. The specific settings are as follows:

[0039] Please refer to Figure 1 The negative pressure launch tank 1 is configured as a conical and / or cylindrical and / or truncated cone closed structure, and the bottom of the negative pressure launch tank 1 is connected and assembled with the conveying pipeline 2, so as to complete the predetermined negative pressure feeding function through the negative pressure launch tank 1 and the conveying pipeline 2.

[0040] The air pressure sensor 3 is fixedly assembled on the negative pressure launching tank 1, and the probe end of the air pressure sensor 3 is correspondingly arranged inside the negative pressure launching tank 1, so as to monitor the pressure value change inside the negative pressure launching tank 1 in real time through the air pressure sensor 3, and generate a pressure value change signal; the air pressure sensor 3 and the control input end of the electric control structure 4 are connected through a circuit, so that the pressure value change signal generated by the air pressure sensor 3 can be effectively transmitted to the electric control structure 4 in real time.

[0041] Specifically, the electronic control structure 4 includes a power supply module and a control module connected by a circuit. The control module can be selected from but not limited to a PLC control board, a single-chip control board of model AT80C51, and a microcontroller of model STM32; the control input end of the control module is connected to the air pressure sensor 3 through a circuit, and the control output end of the control module is respectively connected to the air supply valve 6 and the exhaust valve 7 through a circuit, so that after receiving the pressure value change signal generated by the air pressure sensor 3, the control module can further analyze the signal and set the parameters, and use this effective output signal to control the air supply valve 6 and the exhaust valve 7 to complete the air supply and exhaust based on the negative pressure launch tank 1.

[0042] Please continue to refer to Figure 1 The gas supply structure 5 includes a gas source 51, a gas supply pipeline 52 and a gas supply joint end 53; wherein, the output end of the gas source 51 is connected with at least three gas supply pipelines 52, and the at least three gas supply pipelines 52 are respectively connected and arranged with at least three groups of gas supply joint ends 53 in a one-to-one correspondence, and at least three groups of gas supply joint ends 53 are respectively connected, assembled and arranged with the inside of the negative pressure launch tank 1, the inside of one end of the conveying pipeline 2 close to the negative pressure launch tank 1, the middle inside of the conveying pipeline 2 and the inside of one end away from the negative pressure launch tank 1.

[0043] At least three groups of the air supply valves 6 are provided, and at least three groups of the air supply valves 6 are correspondingly and openably connected and assembled in at least three of the air supply pipes 52; the exhaust valve 7 is connected and assembled in an openably and closably manner to the inside of the negative pressure launch tank 1; when the signal is transmitted through the electric control structure 4 to control and adjust the opening size of the air supply valve 6 based on the air intake of the air supply structure 5 and the exhaust of the exhaust valve 7, the pressure balance within the set range of the negative pressure launch tank 1 can be effectively ensured, and at the same time, the connection setting between the air supply pipe 52 and the conveying pipe 2 can be utilized to further assist in achieving a stable air pressure state inside the conveying pipe 2 during the conveying process, thereby significantly improving the overall functional stability and practicality of the device.

[0044] It should be noted that the exhaust valve 7 is configured as a one-way valve.

[0045] The working process of the airtight negative pressure conveying device is:

[0046] The powder material enters the negative pressure launch tank 1, and the negative pressure draws out the internal gas and material, and the negative pressure launch tank 1 is in a negative pressure state. At this time, outside air can easily enter the conveying system. Since the exhaust valve 7 is set as a one-way valve, it is ensured that outside gas cannot enter. The system negative pressure transmits the electrical signal to the electronic control structure 4 through the pressure sensor 3. Under the control of the electronic control structure 4, the air supply valve 6 is opened in a program sequence to supply air to the negative pressure launch tank 1 and the conveying pipeline 2, so that the conveyed material is transported under a gas protection state. When the air supply is too large, the signal of the pressure sensor 3 is transmitted to the electronic control structure 4. At this time, the electronic control structure 4 controls the adjustment of the air supply valve 6 and the synchronous opening of the exhaust valve 7, and the excess gas inside the system is discharged to the outside, which effectively prevents the air pressure inside the system from being too high and causing blockage or pipe bursting.

[0047] This action is repeated to achieve the purpose of continuous gas protection during material transportation. At the same time, under the control of the electric control structure 4, the material production capacity and the gas replenishment size can be automatically matched, reducing the abnormal risk.

[0048] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. An airtight negative pressure conveying device, characterized in that: include: Negative pressure launch tank; A delivery pipeline is connected to the negative pressure launch tank; The air supply structure has at least one air supply output end, and the at least one air supply output end of the air supply structure is connected and assembled with the negative pressure launch tank and the delivery pipeline respectively; An air supply valve, which can be opened and closed, is installed at at least one of the air supply output ends; The exhaust valve is connected to the openable and closable connection assembly inside the negative pressure launch tank.

2. The airtight negative pressure conveying device according to claim 1, characterized in that: The negative pressure launch tank is configured as a conical and / or cylindrical and / or truncated cone closed structure.

3. The airtight negative pressure conveying device according to claim 1, characterized in that: Also includes: The air pressure sensor is fixedly assembled on the negative pressure launching tank, and the probe end of the air pressure sensor is correspondingly arranged inside the negative pressure launching tank.

4. The airtight negative pressure conveying device according to claim 3, characterized in that: Also includes: The electric control structure controls the input end of the air pressure sensor to be connected via a circuit.

5. The airtight negative pressure conveying device according to claim 4, characterized in that: The electric control structure includes a power module and a control module connected by a circuit; The control input end of the control module is connected to the air pressure sensor via a circuit; The control output end of the control module is respectively connected to the air supply valve and the exhaust valve through a circuit.

6. The airtight negative pressure conveying device according to claim 1, characterized in that: The air supply structure includes an air source, an air supply pipeline and an air supply joint end; The output end of the gas source is connected to at least three gas supply pipelines, and the at least three gas supply pipelines are connected to at least three groups of gas supply connector ends in a one-to-one correspondence; At least three groups of the air supply connector ends are respectively connected and assembled with the interior of the negative pressure launch tank, the interior of one end of the delivery pipeline close to the negative pressure launch tank, the middle interior of the delivery pipeline and the interior of one end away from the negative pressure launch tank as the air supply output ends.

7. The airtight negative pressure conveying device according to claim 6, characterized in that: At least three groups of the air supply valves are provided, and at least three groups of the air supply valves are one-to-one correspondingly openable and closable connected and assembled in at least three of the air supply pipelines.

8. The airtight negative pressure conveying device according to any one of claims 1 to 7, characterized in that: The exhaust valve is configured as a one-way valve.

9. The airtight negative pressure conveying device according to any one of claims 1 to 7, characterized in that: The conveying pipeline is connected and assembled with the bottom of the negative pressure launching tank.

Images