A quantitative gas-solid two-phase flow conveying device and a quantitative conveying system

Abstract

The present invention discloses a quantitative gas-solid two-phase flow conveying device, comprising: a material container, a quantitative plunger, a material pushing gas input port, and a material output port. The quantitative plunger has a material cavity, and the quantitative plunger can move back and forth in the material container. When the quantitative plunger moves backward, the material cavity is opened, and the material in the material container can be filled into the material cavity. When the quantitative plunger is extended, the material cavity can be closed. The material pushing gas input port and the material output port can be connected to the closed material cavity. The material pushing gas input port can inject compressed gas into the closed material cavity so that the material in the material cavity can be delivered from the material output port. The present invention also provides a quantitative conveying system, comprising one or more groups of quantitative gas-solid two-phase flow conveying devices. One or more groups of quantitative gas-solid two-phase flow conveying devices can be configured according to specific output requirements to meet different usage requirements.

Description

Technical Field

[0001] The invention relates to the field of powder spraying equipment, and in particular to a quantitative gas-solid two-phase flow conveying device and a quantitative conveying system. Background Art

[0002] In the field of powder spraying, powder is usually transported using a Venturi device, that is, a Venturi suction tube is inserted into a powder container, and a Venturi pump is used to create negative pressure to extract and transport the powder. However, the amount of powder delivered can only be achieved by adjusting the air pressure or air flow of the Venturi nozzle, and more accurate quantitative delivery cannot be achieved. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a quantitative gas-solid two-phase flow conveying device capable of achieving quantitative conveying of powders.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A quantitative gas-solid two-phase flow conveying device comprises: a material container, a quantitative plunger, a material pushing gas input port, and a material output port. The quantitative plunger has a material cavity with an opening, and the quantitative plunger can move back and forth in the material container. When the quantitative plunger moves backward, the material cavity is opened, and the material in the material container can be filled into the material cavity. When the quantitative plunger is extended, the material cavity can be closed. The material pushing gas input port and the material output port can be connected to the closed material cavity. The material pushing gas input port can inject compressed gas into the closed material cavity so that the material in the material cavity can be delivered from the material output port.

[0006] One of the above technical solutions has at least one of the following advantages or beneficial effects: the function of quantitative transportation can be achieved by controlling the amount of material output each time by the material cavity.

[0007] Preferably, a cavity with a one-way opening is provided in the quantitative plunger, and a plunger core is fixedly provided in the cavity to form a material holding cavity with a fixed volume to meet the requirements of quantitative spraying.

[0008] Preferably, a cavity with a one-way opening is provided in the quantitative plunger, and a plunger core is movably provided in the cavity. The volume of the material holding cavity can be adjusted by moving the position of the plunger core to adjust the material output each time as needed to meet different usage requirements.

[0009] Preferably, one of the material pushing gas input port and the material output port is arranged in the material cavity, and the other is arranged at a position where the inner wall of the material container is opposite to the quantitative plunger. When the quantitative plunger is extended, the opening of the material cavity can abut against the inner wall of the material container to close the material cavity, so as to facilitate the delivery of the material in the material cavity by high-pressure gas.

[0010] Preferably, the material pushing air input port is equipped with a pushing air stop valve, and the material output port is equipped with a material output stop valve. When the material cavity is closed, the pushing air stop valve and the material output stop valve are opened to deliver the material. When the material cavity is open, the pushing air stop valve and the material output stop valve are closed to seal the material container to prevent material leakage.

[0011] Preferably, a plunger sealing ring corresponding to the opening of the material cavity is provided on the inner wall of the material container opposite to the quantitative plunger, so as to improve the sealing performance of the material cavity and ensure the conveying accuracy of the material.

[0012] Preferably, the material container is a fluidized gas-solid two-phase flow container or a vibrating gas-solid two-phase flow container, or a stirring gas-solid two-phase flow container to improve the looseness and fluidity of the material.

[0013] Preferably, the installation angle between the quantitative plunger and the bottom surface of the material container is 0° or 90°, that is, the quantitative plunger is arranged horizontally or vertically, and the arrangement of the mechanism is more reasonable at this time.

[0014] Preferably, a gas-solid two-phase fluidization device is provided in the material chamber to improve the looseness and fluidity of the material.

[0015] The present invention also provides a quantitative conveying system, comprising one or more groups of quantitative gas-solid two-phase flow conveying devices as described above. One or more groups of quantitative gas-solid two-phase flow conveying devices can be configured according to specific output requirements to meet different usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 It is a cross-sectional schematic diagram of a material chamber when it is closed according to a specific embodiment of the present invention;

[0018] Figure 2 It is a cross-sectional schematic diagram of a specific embodiment of the present invention when the material containing cavity is open. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] Reference Figure 1 , Figure 2 , Figure 1 , Figure 2 It is a structural schematic diagram of a specific embodiment of the present invention. As shown in the figure, a quantitative gas-solid two-phase flow conveying device includes: a material container 1, a quantitative plunger 2, a material pushing gas input port 31, a material output port 4, and a material conveying pipeline 43. The quantitative plunger 2 has a material cavity 21 with an opening, and the quantitative plunger 2 can move back and forth in the material container 1. When the quantitative plunger 2 moves backward, the material cavity 21 is opened, and the material in the material container 1 can be filled into the material cavity 21. When the quantitative plunger 2 is extended, the material cavity 21 can be closed, and the material pushing gas input port 31 and the material output port 4 can be connected to the closed material cavity 21. The material pushing gas input port 31 can inject compressed gas into the closed material cavity 21, so that the material in the material cavity 21 can be delivered from the material output port 4 through the material conveying pipeline 43. The amount of material output each time is controlled by the material cavity 21, so as to realize the function of quantitative conveying.

[0024] Preferably, as shown in the figure, in the present embodiment, the material pushing gas input port 31 is provided with a pushing gas stop valve 32, and the material output port 4 is provided with a material output stop valve 41. When the material holding cavity 21 is closed, the pushing gas stop valve 32 and the material output stop valve 41 are opened to feed compressed gas through the material pushing gas input port 31 and to feed the material through the material output port 4. When the material holding cavity 21 is opened, the pushing gas stop valve 32 and the material output stop valve 41 are closed to seal the material container 1 to prevent material leakage.

[0025] In a specific implementation, the material output port 4 is connected to the powder output pipe through the material conveying pipeline 43, and the material pushing gas input port 31 is connected to an air source such as a compressor, an air storage tank, etc. through an air pipe to feed compressed gas.

[0026] Preferably, as shown in the figure, in this embodiment, a cavity with a one-way opening is provided in the quantitative plunger 2, and a plunger core 3 is movably provided in the cavity. The volume of the material holding cavity 21 can be adjusted by moving the position of the plunger core 3 to adjust the material output each time as needed to meet different usage requirements.

[0027] In the specific implementation process, the plunger core 3 can be set in the cavity through threaded cooperation, and the volume size of the material holding cavity 21 can be adjusted by manually or electrically rotating the plunger core 3. Of course, the plunger core 3 can be slidably set in the cavity, and the position of the plunger core 3 can be adjusted by a positioning structure such as a latch, which can also achieve the volume size adjustment of the material holding cavity 21. It will not be described in detail here.

[0028] In addition, in the specific implementation process, the plunger core 3 can be fixedly arranged in the cavity to form a material holding chamber 21 of fixed volume to maintain a relatively constant output, so as to be suitable for batch quantitative spraying operations that do not require adjustment of the spraying amount.

[0029] Preferably, as shown in the figure, the material pushing gas input port 31 is arranged in the material cavity 21, and the material output port 4 is arranged at a position where the inner wall of the material container 1 is opposite to the quantitative plunger 2. When the quantitative plunger 2 is extended, the opening of the material cavity 21 can abut against the inner wall of the material container 1 to close the material cavity 21, so as to facilitate the delivery of the material in the material cavity 21 by high-pressure gas.

[0030] Of course, in the specific implementation process, the positions of the material pushing gas input port 31 and the material output port 4 can be interchanged, and the positions of the pushing gas stop valve 32 and the material output stop valve 41 can also be interchanged accordingly, that is, Figure 1 and Figure 2By reversing the directions of air intake and material discharge, the function of quantitative feeding can also be achieved. In addition, the material pushing air input port 31 and the material output port 4 can also be set on the same side, such as being set in the material cavity 21 or on the inner wall of the material container 1, which will not be described in detail here.

[0031] Preferably, as shown in the figure, a plunger sealing ring 42 corresponding to the opening of the material cavity 21 is provided on the inner wall of the material container 1 opposite to the quantitative plunger 2 to improve the sealing performance when the material cavity 21 is closed and ensure the accuracy of feeding.

[0032] Preferably, in this embodiment, the plunger seal ring 42 is an inflatable seal ring to further improve the sealing effect.

[0033] Preferably, the material container 1 is a fluidized gas-solid two-phase flow container or a vibrating gas-solid two-phase flow container, or a stirring gas-solid two-phase flow container, so as to improve the looseness and fluidity of the material in the material container 1 .

[0034] In the specific embodiment of the present invention, the gas-solid two-phase flow fluidization process or the gas-solid two-phase flow fluidization device is a commonly used method or equipment in the powder container in the art and will not be described in detail herein.

[0035] Preferably, in this specific embodiment, a fluidizing plate 92 is provided at the bottom of the material container 1 to achieve fluidization of the material in conjunction with the fluidizing gas.

[0036] Preferably, as shown in the figure, the installation angle between the quantitative plunger 2 and the bottom surface of the material container ranges from 0° to 360°, that is, the installation angle of the quantitative plunger 2 is not limited, and the installation angle can be adjusted according to actual use requirements to suit different usage occasions.

[0037] Preferably, the installation angle between the quantitative plunger 2 and the bottom surface of the material container is 0° or 90°, that is, the quantitative plunger 2 is arranged horizontally or vertically, and the arrangement of the mechanism is more reasonable at this time.

[0038] Preferably, a gas-solid two-phase fluidization device is provided in the material chamber 21 to improve the looseness and fluidity of the material to ensure smooth transportation of the material.

[0039] Preferably, in this specific embodiment, an inner cavity fluidizing sleeve 91 is provided in the material holding cavity 21 to achieve fluidization of the material in cooperation with the fluidizing gas.

[0040] Preferably, in this embodiment, the output amount of the material per unit time can be controlled by controlling the frequency of the reciprocating movement of the quantitative plunger 2.

[0041] Preferably, in this embodiment, the quantitative plunger 2 is driven by the cylinder 90 to achieve reciprocating movement. Of course, in the specific implementation process, the driving of the quantitative plunger 2 can be achieved by other linear driving mechanisms, such as a linear motor, a spur rack driving mechanism, etc., which will not be described in detail here.

[0042] It is easy for those skilled in the art to understand that the above preferred embodiments can be freely combined and superimposed without conflict.

[0043] A specific embodiment of the present invention also discloses a quantitative conveying system, comprising one or more groups of quantitative gas-solid two-phase flow conveying devices as disclosed in any of the above embodiments. One or more groups of quantitative gas-solid two-phase flow conveying devices can be configured according to specific output requirements to meet different usage requirements.

[0044] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A quantitative gas-solid two-phase flow conveying device, characterized in that: include: A material container, a quantitative plunger, a material pushing gas input port, and a material output port. The quantitative plunger has a material cavity with an opening. The quantitative plunger can reciprocate in the material container. When the quantitative plunger moves backward, the material cavity is opened, and the material in the material container can be filled into the material cavity. When the quantitative plunger is extended, the material cavity can be closed. The material pushing gas input port and the material output port can be connected to the closed material cavity. The material pushing gas input port can inject compressed gas into the closed material cavity, so that the material in the material cavity can be sent out from the material output port. The material container is a fluidized gas-solid two-phase flow container, a vibrating gas-solid two-phase flow container, or a stirring gas-solid two-phase flow container; The material pushing gas input port is equipped with a pushing gas stop valve, and the material output port is equipped with a material output stop valve. When the material cavity is closed, the pushing gas stop valve and the material output stop valve are opened to deliver the material. When the material cavity is open, the pushing gas stop valve and the material output stop valve are closed to seal the material container. A gas-solid two-phase fluidization device is provided in the material chamber to improve the looseness and fluidity of the material; The gas-solid two-phase fluidization device is an inner cavity fluidization sleeve arranged in the material holding cavity, and the inner cavity fluidization sleeve cooperates with the fluidization gas to realize the fluidization of the material.

2. A quantitative gas-solid two-phase flow conveying device according to claim 1, characterized in that: A cavity with a one-way opening is arranged in the quantitative plunger, and a plunger inner core is fixedly arranged in the cavity to form a material containing cavity with a fixed volume.

3. A quantitative gas-solid two-phase flow conveying device according to claim 1, characterized in that: A cavity with a one-way opening is arranged in the quantitative plunger, and a plunger inner core is movably arranged in the cavity. The volume of the material containing cavity can be adjusted by moving the position of the plunger inner core.

4. A quantitative gas-solid two-phase flow conveying device according to claim 2 or 3, characterized in that: One of the material pushing air input port and the material output port is arranged in the material cavity, and the other is arranged at a position where the inner wall of the material container is opposite to the quantitative plunger. When the quantitative plunger is extended, the opening of the material cavity can abut against the inner wall of the material container to close the material cavity.

5. A quantitative gas-solid two-phase flow conveying device according to claim 4, characterized in that: A plunger sealing ring corresponding to the opening of the material containing cavity is arranged on the inner wall of the material container opposite to the quantitative plunger.

6. A quantitative gas-solid two-phase flow conveying device according to claim 1, characterized in that: The installation angle between the quantitative plunger and the bottom surface of the material container is 0° or 90°.

7. Quantitative delivery system, characterized in that: It comprises one or more groups of quantitative gas-solid two-phase flow conveying devices as described in any one of claims 1 to 6.

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