Negative-pressure dust removal device for batching tank

Abstract

The utility model provides a negative pressure dust removal device for a batching tank, and belongs to the technical field of dust removal equipment.The dust removal device for the batching tank comprises the batching tank and a dust remover, a powder bin is installed on one side of the batching tank, the batching tank is further communicated with an exhaust pipe, and the exhaust pipe is provided with an exhaust port; the dust remover is connected with a dust collecting pipe, the dust collecting pipe extends in the direction close to the exhaust port to form a dust collecting port, a gap is formed between the dust collecting port and the exhaust port, and the dust collecting port is communicated with the exhaust port. The batching tank is communicated with the exhaust pipe, dust in the batching tank can be exhausted through the exhaust port of the exhaust pipe and is conveyed to the dust remover through the dust collecting port and the dust collecting pipe, and due to the fact that the gap is formed between the dust collecting port and the exhaust port, suction force of the dust remover can be compensated by the atmosphere in the gap, and dust in the batching tank can be removed. The pressure in the batching tank is always kept at a stable value, the pressure in the batching tank can be stabilized, and the weighing accuracy is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of dust removal equipment, and in particular to a negative pressure dust removal device for a batching tank. Background Art

[0002] At present, in the powder batching process, the pressure in the tank of various powders is unstable during batching or discharging, which affects the weighing stability of the powder silo and causes inaccurate batching measurement. If the space inside the batching tank is directly connected to the atmosphere, a large amount of dust will be generated.

[0003] In the related art, there are two main ways to remove dust from powder in a batching tank. One is to directly connect a negative pressure fan to the batching tank to draw the dust in the tank to a dust collector for centralized treatment. Although the dust in the tank can be collected after being treated by the negative pressure fan, the dust will be attached to the pipe connected to the negative pressure fan, affecting the accuracy of batching metering. Directly connecting a negative pressure fan to the batching tank will result in a large loss of powder. The other is to install a pulse dust collector on the batching tank, and then connect the negative pressure fan to the pulse dust collector for dust removal. Although the pulse dust collector can transport the recovered dust to the silo to reduce the loss of raw materials, the batching tank is always in a negative pressure state. When the pulse dust collector is activated, positive pressure suddenly appears in the tank. This unstable pressure will affect the weighing accuracy of the powder silo and affect the quality of product batching.

[0004] Therefore, it is necessary to design a new negative pressure dust removal device for the batching tank to solve the above problems. Utility Model Content

[0005] In view of the technical problems existing in the background technology, the present application provides a negative pressure dust removal device for a batching tank, which can solve the technical problem in the related technology that the unstable pressure in the batching tank affects the weighing accuracy.

[0006] In the first aspect, an embodiment of the present application provides a negative pressure dust removal device for a batching tank, comprising: a batching tank and a dust collector, wherein a powder bin is installed on one side of the batching tank, and the batching tank is also connected to an exhaust pipe, and the exhaust pipe has an exhaust port; the dust collector is connected to a dust collecting pipe, and the dust collecting pipe extends in a direction close to the exhaust port to form a dust collecting port, and there is a gap between the dust collecting port and the exhaust port, and the dust collecting port is connected to the exhaust port.

[0007] In the technical solution of the embodiment of the present application, the powder bin is installed on one side of the batching tank, so that the powder enters the batching tank through the powder bin, and the exhaust pipe is connected through the batching tank to effectively guide the dust in the batching tank to the dust collecting pipe, and the dust collecting pipe is connected through the dust collector to effectively guide the dust in the batching tank along the dust collecting pipe to the dust collector, and the exhaust port of the exhaust pipe and the dust collecting port formed by extending the dust collecting pipe in the direction close to the exhaust port are arranged at intervals so that there is a gap between the dust collecting port and the exhaust port, so that the exhaust pipe and the dust collecting pipe are not fully connected, and the suction force of the dust collector will be compensated by the atmosphere in the gap, so that the pressure in the batching tank is always at a stable value, thereby solving the problem of unstable pressure in the batching tank in the related art. Technical issues that affect weighing accuracy are solved by arranging a dust removal fan, a filter cartridge, and a pulse back-blowing device in the dust collector, and arranging a dust removal control box outside the dust collector. By arranging the filter cartridge at the air inlet of the dust collector, the dust collector can collect and process the dust transported by the dust collecting pipe. The dust removal fan is arranged on one side of the dust collector, and the air inlet of the dust removal fan corresponds to one side of the filter cartridge, so that the dust removal control box can timely adjust the frequency of the dust removal fan according to the pressure signal received by the dust collector. The pulse back-blowing device is arranged on the other side of the dust collector, and the air outlet of the pulse back-blowing device corresponds to one side of the filter cartridge, so that the pulse back-blowing device can automatically clean the filter cartridge to ensure that the dust collector is not easily blocked.

[0008] In some embodiments, the inner diameter of the dust collection port is larger than the inner diameter of the exhaust port.

[0009] In this embodiment, by setting the inner diameter of the dust collecting port to be larger than the inner diameter of the exhaust port, the dust collecting port can completely cover the exhaust port, and the dust discharged from the exhaust pipe can be effectively guided into the dust collecting pipe.

[0010] In some embodiments, the dust collecting pipe includes a connecting pipe and a dust collecting hood, the connecting pipe is connected to the dust collector, and one end of the connecting pipe away from the dust collector is connected to the dust collecting hood, and the dust collecting hood forms the dust collecting port.

[0011] In this embodiment, by setting a connecting pipe and a dust collecting hood, the connecting pipe is connected to the dust collector, so that the dust discharged from the exhaust pipe can be effectively guided to the dust collector through the connecting pipe, and the dust collecting port and the exhaust port have a gap, so that the dust collecting hood and the exhaust pipe are not completely connected, and the suction force of the dust collector will be compensated by the atmosphere in the gap, so that the pressure in the batching tank is always at a stable value. And the connecting pipe and the dust collecting hood in this embodiment can be integrally formed or separately formed. After the connecting pipe and the dust collecting hood are formed, they are fixed together to form the dust collecting pipe. When the connecting pipe and the dust collecting hood are separately formed, the connecting pipe can be made into a pipe with the same diameter at all places, which is convenient for the forming of the connecting pipe, and then installed to the dust collecting hood with a gradually increasing inner diameter, a dust collecting port with an inner diameter larger than the exhaust port can be formed, which is convenient for the dust collecting port and the exhaust port to form the gap. Of course, in other embodiments, the inner diameter of the dust collecting port can also be designed to be equal to the inner diameter of the exhaust port.

[0012] In some embodiments, a receiving tray is disposed outside the exhaust pipe, and the dust collecting hood covers the receiving tray along the axial direction of the dust collecting hood.

[0013] In this embodiment, by arranging a receiving tray outside the exhaust pipe, the dust collecting hood covers the receiving tray along the axial direction of the dust collecting hood, so that the powder dropped from the dust collecting hood and the connecting pipe can be completely collected and recycled.

[0014] In some embodiments, the exhaust port is coaxially arranged with the dust collection port.

[0015] In this embodiment, by setting the exhaust port and the dust collecting port coaxially, the dust discharged from the exhaust pipe can enter the dust collecting pipe in large quantities and smoothly, and be guided to the dust collector through the dust collecting pipe for collection and treatment. In other embodiments, the exhaust port and the dust collecting port can also be non-coaxially arranged.

[0016] In some embodiments, an end surface of the exhaust port is coplanar with an end surface of the dust collection port along the axial direction of the exhaust port.

[0017] In this embodiment, by setting the end face of the exhaust port and the end face of the dust collecting port to be coplanar along the axial direction of the exhaust port, foreign matter outside the dust collecting hood can be effectively prevented from entering the exhaust pipe to contaminate the powder, and the pressure in the batching tank can be prevented from being sucked into a negative pressure when the dust collector is working. In other embodiments, the end face of the exhaust port can extend into the dust collecting hood, or the end face of the exhaust port can be located outside the exhaust pipe and spaced a distance from the end face of the dust collecting port, so that the end face of the exhaust port is not coplanar with the end face of the dust collecting port.

[0018] In some embodiments, a weighing device is installed on one side of the powder silo, and the powder silo is also connected to a forced feeding mechanism, the forced feeding mechanism is connected to the batching tank, and the forced feeding mechanism is provided with a first control valve.

[0019] In this embodiment, a weighing device is provided on one side of the powder silo so that the weight of the powder entering the powder silo is weighed to ensure the ratio of the product. The forced unloading mechanism is connected to the powder silo so that the powder in the powder silo is forced to enter the batching tank through the forced unloading mechanism to ensure the ratio of the product. A first control valve is provided on the forced unloading mechanism so that the opening and closing of the forced unloading mechanism can be controlled. When the first control valve is opened, the forced unloading mechanism is opened, and the powder in the powder silo enters the batching tank. When the first control valve is closed, the forced unloading mechanism is closed, and the batching tank remains closed during the powder mixing process.

[0020] In some embodiments, the batching tank is further provided with a solvent feed pipe, the solvent feed pipe is arranged at the upper end of the batching tank, and the solvent feed pipe is provided with a second control valve.

[0021] In this embodiment, the solvent feed pipe is arranged at the upper end of the batching tank so that the solvent is transported to the batching tank through the solvent feed pipe. The second control valve is arranged on the solvent feed pipe so that the second control valve can control the feed amount of the solvent so that the solvent is added to the batching tank according to the proportion.

[0022] In some embodiments, the batching tank is further provided with a mixing device.

[0023] In this embodiment, by arranging a mixing device on the batching tank, the powder and solvent in the batching tank are fully mixed and uniformly mixed to ensure the quality of the product. The mixing device can be arranged at the center of the upper end of the batching tank. In other embodiments, the mixing device can also be arranged at other positions of the batching tank.

[0024] In some embodiments, the batching tank is further provided with a pressure transmitter, and the pressure transmitter is arranged at the upper end of the batching tank.

[0025] In this embodiment, a pressure transmitter is provided at the upper end of the batching tank so that the pressure in the batching tank is fed back to the dust collector in real time, so that the dust collector adjusts the frequency of the dust removal fan according to the pressure signal, thereby adjusting the suction force of the dust collecting pipe, and the dust discharged from the exhaust pipe is sucked away in time, and the larger dust particles that are not completely sucked away fall into the receiving tray for collection.

[0026] The beneficial effects brought by the technical solution provided by the embodiments of the present application include:

[0027] By connecting the batching tank to the exhaust pipe, the dust in the batching tank can be discharged through the exhaust port of the exhaust pipe, and transported to the dust collector through the dust collecting port and the dust collecting pipe. Moreover, since there is a gap between the dust collecting port and the exhaust port, the suction force of the dust collector will be compensated by the atmosphere in the gap, so that the pressure in the batching tank is always at a stable value, thereby solving the technical problem in the related art that the unstable pressure in the batching tank affects the weighing accuracy.

[0028] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings used in the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 This is a schematic structural diagram of a negative pressure dust removal device for a batching tank in this application;

[0031] Figure 2 It is a side view of a negative pressure dust removal device for a batching tank in the present application;

[0032] Figure 3 for Figure 2 Enlarged view of middle I;

[0033] Figure 4 For ingredients Figure 2 Sectional view of middle I;

[0034] Figure 5 For discharging Figure 2 Sectional view of middle I;

[0035] Figure 6 This is a schematic diagram of a negative pressure dust removal device for a batching tank in this application.

[0036] Explanation of the reference numerals: 1. batching tank; 2. powder silo; 3. exhaust pipe; 301. exhaust port; 4. dust collector; 401. dust removal fan; 402. filter cartridge; 403. pulse back-blowing device; 404. dust removal control box; 5. connecting pipe; 6. dust collecting hood; 601. dust collecting port; 7. receiving tray; 8. weighing device; 9. forced unloading mechanism; 901. first control valve; 10. solvent feed pipe; 101. second control valve; 11. mixing device; 12. pressure transmitter. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0043] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0044] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0045] At present, there are two main ways to remove dust from powder in batching tanks. One is to directly connect a negative pressure fan to the batching tank to extract the dust in the tank to the dust collector for centralized treatment. The other is to install a pulse dust collector on the batching tank, and then connect the negative pressure fan to the pulse dust collector for dust removal. Directly connecting a negative pressure fan to the batching tank will result in a large loss of powder. Installing a pulse dust collector on the batching tank will cause unstable pressure in the batching tank, affecting the weighing accuracy of the powder bin.

[0046] In order to solve the technical problem that the unstable pressure in the batching tank 1 affects the weighing accuracy, the present application provides a negative pressure dust removal device for the batching tank, wherein a powder silo 2 is installed on one side of the batching tank 1, so that the powder enters the batching tank 1 through the powder silo 2, the batching tank 1 is connected to the exhaust pipe 3, and the dust collector 4 is connected to the dust collecting pipe, so that the dust in the batching tank 1 is effectively guided to the dust collector 4 along the exhaust pipe 3 and the dust collecting pipe, the exhaust pipe 3 has an exhaust port 301, and the dust collecting pipe extends in a direction close to the exhaust port 301 to form a dust collecting port 601, and there is a gap between the dust collecting port 601 and the exhaust port 301, so that the exhaust pipe 3 and the dust collecting pipe are not fully connected, and the suction force of the dust collector 4 will be compensated by the atmosphere in the gap, so that the pressure in the batching tank 1 is always at a stable value.

[0047] Please refer to Figure 1 and Figure 2, is a structural schematic diagram of a negative pressure dust removal device for a batching tank provided in an embodiment of the present application, the negative pressure dust removal device for a batching tank comprises a batching tank 1 and a dust collector 4, a powder bin 2 is installed on one side of the batching tank 1, the batching tank 1 is also connected to an exhaust pipe 3, and the exhaust pipe 3 has an exhaust port 301; the dust collector 4 is connected to a dust collecting pipe, and the dust collecting pipe extends toward a direction close to the exhaust port 301 to form a dust collecting port 601, and there is a gap between the dust collecting port 601 and the exhaust port 301, so that the gap can be connected to the outside atmosphere, and the dust collecting port 601 is connected to the exhaust port 301.

[0048] In this embodiment, the powder bin 2 is used to add powder into the batching tank 1, the exhaust pipe 3 is used to effectively guide the dust in the batching tank 1 to the dust collecting pipe, and the dust collecting pipe is used to effectively guide the dust discharged from the exhaust pipe 3 to the dust collector 4. The dust collecting pipe extends in the direction close to the exhaust port 301 to form a dust collecting port 601. There is a gap between the dust collecting port 601 and the exhaust port 301, so that the exhaust pipe 3 and the dust collecting pipe are not completely connected. The dust collecting port 601 and the exhaust port 301 can be connected to the atmosphere, so that the pressure in the batching tank 1 is at a stable value. The dust collector 4 includes a dust removal fan 401, a filter cartridge 402, a pulse backblowing device 403 and a dust removal control box 404. The cartridge 402 is arranged at the air inlet of the dust collector 4, the dust removal fan 401 is arranged on one side of the dust collector 4, the air inlet of the dust removal fan 401 corresponds to one side of the filter cartridge 402, the pulse back-blow device 403 is arranged on the other side of the dust collector 4, the air outlet of the pulse back-blow device 403 corresponds to one side of the filter cartridge 402, the dust removal control box 404 is arranged on the outside of the dust collector 4, the dust collector 4 can collect and process the dust transported by the dust collecting pipe, the dust removal control box 404 can timely adjust the frequency of the dust removal fan 401 according to the received pressure signal, the pulse back-blow device 403 can automatically clean the filter cartridge 402, and ensure that the dust collector 4 is not easily blocked.

[0049] Among them, Figure 1-6 As shown, when batching starts, the dust collector 4 is turned on, powder is added to the powder bin 2, and a large amount of powder enters the batching tank 1 to form a positive pressure. Under the pressure of the batching tank 1, a large amount of dust is discharged through the exhaust pipe 3 and transported to the dust collector 4 through the dust collecting pipe. The exhaust pipe 3 and the dust collecting pipe are not completely connected, so that the pressure of the dust collector 4 is compensated by the atmosphere, so that the pressure in the batching tank 1 is not sucked into a negative pressure, so that the pressure in the batching tank 1 is always at a stable value until the batching is completed ( Figure 4The direction of the arrow in the middle is the pressure flow direction at the connection between the exhaust pipe 3 and the dust collecting pipe during batching); after batching is completed, the dust collector 4 is closed, the batching tank 1 starts to discharge, and a negative pressure is formed in the batching tank 1. Under the pressure of the batching tank 1, a large amount of dust falls back into the batching tank 1. The exhaust pipe 3 and the dust collecting pipe are not completely connected, so that the pressure of the batching tank 1 is compensated by the atmosphere. The pressure in the batching tank 1 is always at a stable value until the discharge is completed ( Figure 5 The direction of the middle arrow is the pressure flow direction at the connection between the exhaust pipe 3 and the dust collecting pipe during discharge).

[0050] In this embodiment, by connecting the batching tank 1 to the exhaust pipe 3, the dust in the batching tank 1 can be discharged through the exhaust port 301 of the exhaust pipe 3, and transported to the dust collector 4 through the dust collecting port 601 and the dust collecting pipe. Moreover, since there is a gap between the dust collecting port 601 and the exhaust port 301, the exhaust pipe 3 and the dust collecting pipe are not completely connected. The suction force of the dust collector 4 will be compensated by the atmosphere in the gap, so that the pressure in the batching tank 1 is always at a stable value, thereby solving the technical problem in the related art that the unstable pressure in the batching tank 1 affects the weighing accuracy.

[0051] Further, in the embodiments of the present application, Figure 3 As shown, the inner diameter of the dust collecting port 601 is larger than the inner diameter of the exhaust port 301. In this embodiment, the inner diameter of the dust collecting port 601 is larger than the inner diameter of the exhaust port 301, and the dust collecting port 601 can completely cover the exhaust port 301, so that the dust discharged from the exhaust pipe 3 can be effectively guided into the dust collecting pipe.

[0052] Further, in the embodiments of the present application, Figure 3As shown, the dust collecting pipe includes a connecting pipe 5 and a dust collecting hood 6, the connecting pipe 5 is connected to the dust collector 4, and one end of the connecting pipe 5 away from the dust collector 4 is connected to the dust collecting hood 6, and the dust collecting hood 6 forms the dust collecting port 601. In this embodiment, the connecting pipe 5 is connected to the dust collector 4, so that the dust discharged from the exhaust pipe 3 can be effectively guided to the dust collector 4, and there is a gap between the dust collecting port 601 and the exhaust port 301, so that the dust collecting hood 6 is not completely connected to the exhaust pipe 3, and the suction force of the dust collector 4 will be compensated by the atmosphere in the gap, so that the pressure in the batching tank 1 is always at a stable value. In this embodiment, the connecting tube 5 and the dust collecting hood 6 can be integrally formed or separately formed. After the connecting tube 5 and the dust collecting hood 6 are formed, they are fixed together to form the dust collecting tube. When the connecting tube 5 and the dust collecting hood 6 are separately formed, the connecting tube 5 can be made into a tube with the same diameter at all places, which is convenient for the forming of the connecting tube 5. Then, the connecting tube 5 is installed to the dust collecting hood 6 with a gradually increasing inner diameter, so as to form a dust collecting port 601 with an inner diameter larger than the exhaust port 301, so as to form the gap between the dust collecting port 601 and the exhaust port 301. Of course, in other embodiments, the inner diameter of the dust collecting port 601 can also be designed to be equal to the inner diameter of the exhaust port 301.

[0053] Further, in the embodiments of the present application, Figure 1-3 As shown, a receiving tray 7 is provided outside the exhaust pipe 3, and the dust collecting hood 6 covers the receiving tray 7 along the axial direction of the dust collecting hood 6. In this embodiment, a receiving tray 7 may be provided outside the exhaust pipe 3, and the dust collecting hood 6 covers the receiving tray 7 along the axial direction of the dust collecting hood 6, so that the powder falling from the dust collecting hood 6 and the connecting pipe 5 can be completely collected and recycled.

[0054] Further, in the embodiments of the present application, Figure 3 As shown, the exhaust port 301 is coaxially arranged with the dust collecting port 601. In this embodiment, the exhaust port 301 and the dust collecting port 601 can be coaxially arranged, so that the dust discharged from the exhaust pipe 3 enters the dust collecting pipe in large quantities and smoothly, and is guided to the dust collector 4 through the dust collecting pipe for collection and treatment. In other embodiments, the exhaust port 301 and the dust collecting port 601 can also be non-coaxially arranged.

[0055] Further, in the embodiments of the present application, Figure 3As shown, the end face of the exhaust port 301 is coplanar with the end face of the dust collecting port 601 along the axial direction of the exhaust port 301. In this embodiment, the end face of the exhaust port 301 is coplanar with the end face of the dust collecting port 601 along the axial direction of the exhaust port 301, which can effectively prevent foreign matter outside the dust collecting hood 6 from entering the exhaust pipe 3 to contaminate the powder, and at the same time, it can prevent the pressure in the batching tank 1 from being sucked into a negative pressure when the dust collector 4 is working. In other embodiments, the end face of the exhaust port 301 can extend into the dust collecting hood 6, and the end face of the exhaust port 301 can also be located outside the exhaust pipe 3 and set at a distance from the end face of the dust collecting port 601, so that the end face of the exhaust port 301 is not coplanar with the end face of the dust collecting port 601.

[0056] Further, in the embodiments of the present application, Figure 1 and Figure 2 As shown, a weighing device 8 is installed on one side of the powder bin 2, and the powder bin 2 is also connected to a forced feeding mechanism 9, which is connected to the batching tank 1, and the forced feeding mechanism 9 is provided with a first control valve 901. In this embodiment, the weighing device 8 can weigh the weight of the powder entering the powder bin 2 to ensure the proportion of the product, and the forced feeding mechanism 9 forces all the powder in the powder bin 2 to enter the batching tank 1 to ensure the proportion of the product. The first control valve 901 can control the opening and closing of the forced feeding mechanism 9. When the first control valve 901 is opened, the forced feeding mechanism 9 is opened, and the powder in the powder bin 2 enters the batching tank 1. When the first control valve 901 is closed, the forced feeding mechanism 9 is closed, and the batching tank 1 remains closed during the powder mixing process.

[0057] Further, in the embodiments of the present application, Figure 1 and Figure 2 As shown, the batching tank 1 is further provided with a solvent feed pipe 10, which is provided at the upper end of the batching tank 1 and is provided with a second control valve 101. In this embodiment, the solvent feed pipe 10 can transport the solvent to the batching tank 1, and the second control valve 101 can control the feed amount of the solvent so that the solvent is added to the batching tank 1 according to the proportion.

[0058] Further, in the embodiments of the present application, Figure 1 and Figure 2 As shown, the batching tank 1 is also provided with a mixing device 11. In this embodiment, the mixing device 11 can be arranged at the center of the upper end of the batching tank 1, and the mixing device 11 can effectively mix the powder and solvent in the batching tank 1 to ensure the quality of the product. In other embodiments, the mixing device 11 can also be arranged at other positions of the batching tank 1.

[0059] Further, in the embodiments of the present application, Figure 1 and Figure 2 As shown, the batching tank 1 is also provided with a pressure transmitter 12, and the pressure transmitter 12 is arranged at the upper end of the batching tank 1. In this embodiment, the pressure transmitter 12 can feed back the pressure in the batching tank 1 to the dust collector 4 in real time, so that the dust collector 4 adjusts the frequency of the dust removal fan 401 according to the pressure signal, thereby adjusting the suction force of the dust collecting pipe, and the dust discharged from the exhaust pipe 3 is sucked away in time, and the larger dust particles that are not completely sucked away fall into the receiving tray 7 for collection.

[0060] Please also read Figures 1 to 6 According to one or more embodiments of the present application, the negative pressure dust removal device of the batching tank of the present application includes a batching tank 1 and a dust collector 4, a powder bin 2 is installed on one side of the batching tank 1, and the batching tank 1 is also connected to an exhaust pipe 3, and the exhaust pipe 3 has an exhaust port 301, and the dust collector 4 is connected to a dust collecting pipe, and the dust collecting pipe extends toward the direction close to the exhaust port 301 to form a dust collecting port 601, and there is a gap between the dust collecting port 601 and the exhaust port 301, and the dust collecting port 601 is connected to the exhaust port 301. When batching starts, the dust collector 4 is turned on, and powder is added to the powder bin 2. A positive pressure is formed in the batching tank 1 due to the entry of a large amount of powder. Under the pressure of the batching tank 1, a large amount of dust is discharged through the exhaust pipe 3 and transported to the dust collector through the dust collecting pipe. The exhaust pipe 3 and the dust collecting pipe are not fully connected, so that the pressure of the dust collector 4 is compensated by the atmosphere, so that the pressure in the batching tank 1 is not sucked into a negative pressure, so that the pressure in the batching tank 1 can be kept at a stable value until the batching is completed, and the powder bin 2 is weighed stably. After the batching is completed, the dust collector 4 is closed, and the batching tank 1 starts to discharge, and a negative pressure is formed in the batching tank 1. Under the pressure of the batching tank 1, a large amount of dust falls back into the batching tank 1, and the exhaust pipe 3 and the dust collecting pipe are not fully connected, so that the pressure of the batching tank 1 is compensated by the atmosphere, so that the pressure in the batching tank 1 can be kept at a stable value until the discharge is completed. After the batching is completed, the dust collected by the dust collector 4 and the receiving tray 7 can be uniformly recovered to avoid waste of powder.

[0061] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and the embodiments having the same structure as the technical idea and exerting the same effect within the scope of the technical solution of the present application are all included in the technical scope of the present application. In addition, within the scope of the subject matter of the present application, various modifications that can be thought of by those skilled in the art to the embodiments and other methods of combining some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A negative pressure dust removal device for a batching tank, characterized in that: It includes: A batching tank (1), a powder bin (2) is installed on one side of the batching tank (1), and the batching tank (1) is also connected to an exhaust pipe (3), and the exhaust pipe (3) has an exhaust port (301); A dust collector (4), wherein the dust collector (4) is connected to a dust collecting pipe, wherein the dust collecting pipe extends in a direction close to the exhaust port (301) to form a dust collecting port (601), wherein a gap is provided between the dust collecting port (601) and the exhaust port (301), and the dust collecting port (601) is in communication with the exhaust port (301).

2. The negative pressure dust removal device for a batching tank according to claim 1, characterized in that: The inner diameter of the dust collection port (601) is greater than the inner diameter of the exhaust port (301).

3. The negative pressure dust removal device for a batching tank according to claim 1, characterized in that: The dust collecting pipe comprises a connecting pipe (5) and a dust collecting hood (6); the connecting pipe (5) is connected to the dust collector (4); and one end of the connecting pipe (5) away from the dust collector (4) is connected to the dust collecting hood (6); the dust collecting hood (6) forms the dust collecting port (601).

4. The negative pressure dust removal device for a batching tank according to claim 3, characterized in that: A material receiving tray (7) is arranged outside the exhaust pipe (3), and the dust collecting cover (6) covers the material receiving tray (7) along the axial direction of the dust collecting cover (6).

5. The negative pressure dust removal device for a batching tank according to claim 1, characterized in that: The exhaust port (301) and the dust collection port (601) are coaxially arranged.

6. The negative pressure dust removal device for a batching tank according to claim 1, characterized in that: The end surface of the exhaust port (301) and the end surface of the dust collecting port (601) are coplanar along the axial direction of the exhaust port (301).

7. The negative pressure dust removal device for a batching tank according to claim 1, characterized in that: A weighing device (8) is installed on one side of the powder bin (2). The powder bin (2) is also connected to a forced material discharge mechanism (9). The forced material discharge mechanism (9) is connected to the batching tank (1). The forced material discharge mechanism (9) is provided with a first control valve (901).

8. The negative pressure dust removal device for a batching tank according to claim 1, characterized in that: The batching tank (1) is further provided with a solvent feed pipe (10), wherein the solvent feed pipe (10) is arranged at the upper end of the batching tank (1), and the solvent feed pipe (10) is provided with a second control valve (101).

9. The negative pressure dust removal device for a batching tank according to claim 1, characterized in that: The batching tank (1) is also provided with a mixing device (11).

10. The negative pressure dust removal device for a batching tank according to claim 1, characterized in that: The batching tank (1) is also provided with a pressure transmitter (12), and the pressure transmitter (12) is arranged at the upper end of the batching tank (1).

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