Negative pressure device and casting equipment

Abstract

The utility model provides a negative pressure device and casting equipment, and relates to the field of casting unit forming equipment. The negative pressure device comprises an air draft pipeline, a switching pipeline, a collecting pipeline, a branch pipeline and an adjusting piece. The number of the transfer pipelines and the number of the branch pipelines are both multiple, the air draft pipeline is connected with the collecting pipeline through the multiple transfer pipelines, and the joints of the multiple transfer pipelines and the collecting pipeline are arranged at intervals in the extending direction of the collecting pipeline. One end of each branch pipeline is connected with the collecting pipeline, the connecting positions of the branch pipelines and the collecting pipeline are arranged at intervals in the extending direction of the collecting pipeline, and the switching pipeline and / or the branch pipelines are / is connected with an adjusting piece capable of adjusting the air volume. The negative pressure device provided by the utility model can improve the uniformity of the negative pressure strength of each part in the collecting pipeline, so that the stability of a film surface is improved, and the product quality is ensured.

Description

Technical Field

[0001] This application relates to the field of casting machine forming equipment, and in particular to a negative pressure device and a casting equipment. Background Art

[0002] Generally, the exhaust duct of the negative pressure device of the casting equipment is connected to a plurality of branch ducts through a collecting duct. Due to the pipeline connection characteristics of the negative pressure device, there are significant differences in the air extraction volumes of the multiple branch ducts on the collecting duct. Correspondingly, there are also significant differences in the negative pressure intensities at the corresponding multiple branch ducts. Among them, the negative pressure intensity affects the stability of the film surface and the product quality.

[0003] Based on this, how to improve the uniformity of the negative pressure intensity at various locations in the collecting duct is a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the deficiencies in the prior art, and provide a negative pressure device and a casting equipment, which can improve the uniformity of the negative pressure intensity at various locations in the collecting pipeline, thereby increasing the stability of the film surface and ensuring the product quality.

[0005] This application provides the following technical solutions:

[0006] In a first aspect, an embodiment of this application provides a negative pressure device, which includes an exhaust duct, a transfer duct, a collecting duct, a branch duct, and an adjusting member. Among them

[0007] The number of the transfer ducts and the number of the branch ducts are both multiple. The exhaust duct is respectively connected to the collecting duct through a plurality of the transfer ducts. The connection points of the plurality of transfer ducts and the collecting duct are arranged at intervals along the extension direction of the collecting duct.

[0008] One ends of the plurality of branch ducts are respectively connected to the collecting duct. The connection points of the plurality of branch ducts and the collecting duct are arranged at intervals along the extension direction of the collecting duct, and the transfer duct and / or the branch duct is connected with the adjusting member capable of adjusting the air volume.

[0009] In some embodiments of the first aspect, the negative pressure device further includes a pressure detection member, and the pressure detection member is connected to the branch duct. The pressure detection member is used to detect the wind pressure in the branch duct.

[0010] In the gas flow direction in the branch duct, the pressure detection member is located upstream of the adjusting member.

[0011] In some embodiments of the first aspect, the adjusting member includes a wind valve, and the transfer duct and / or the branch duct is connected with the wind valve.

[0012] The pressure detection component includes a wind pressure detection sensor, and the wind pressure detection sensor is connected to the branch pipe.

[0013] In some embodiments of the first aspect, the number of the transfer pipes is a pair, and the pair of transfer pipes are symmetrically arranged with respect to a set reference plane; wherein

[0014] The collecting pipe has a lateral symmetry plane, and the lateral symmetry plane coincides with the set reference plane; the exhaust pipe has a connecting section, the connecting section is connected to the transfer pipe, and the axis of the connecting section is located in the set reference plane.

[0015] In some embodiments of the first aspect, the transfer pipe includes:

[0016] A main pipe and a branch pipe, one end of the main pipe is connected to the exhaust pipe, the other end of the main pipe is connected to the collecting pipe, and the middle part of the main pipe is connected to the collecting pipe through the branch pipe; wherein, the connection between the collecting pipe and the main pipe and the connection between the collecting pipe and the branch pipe are arranged at intervals in the extending direction of the collecting pipe.

[0017] In some embodiments of the first aspect, the main pipe includes a first pipe section, a second pipe section, a third pipe section and a fourth pipe section connected in sequence, the first pipe section is connected to the collecting pipe, and the fourth pipe section is connected to the exhaust pipe;

[0018] Wherein, the first pipe section is perpendicular to the collecting pipe, the third pipe section is parallel to the collecting pipe, and the third pipe section is connected to the collecting pipe through the branch pipe, and the branch pipe is perpendicular to the collecting pipe.

[0019] In some embodiments of the first aspect, the included angle between the second pipe section and the first pipe section is 35°-55°;

[0020] The included angle between the fourth pipe section and the connecting section is 105°-135°.

[0021] In some embodiments of the first aspect, the regulating members are provided on both the branch pipe and the main pipe, and the regulating members on the branch pipe and the regulating members on the main pipe are connected in parallel.

[0022] In some embodiments of the first aspect, the pipe diameter of the main pipe is larger than that of the branch pipe, one end of the main pipe is connected to an end part of the collecting pipe, and the branch pipe is connected to the middle part of the collecting pipe.

[0023] Second aspect, the present application further provides a casting device, the casting device includes an air suction hood and the negative pressure device as described in any one of the above embodiments, and the branch pipe of the negative pressure device is connected to the air suction hood.

[0024] The embodiments of the present application have the following advantages:

[0025] The present application provides a negative pressure device. The air extraction pipe sucks out the air at various places in the collection pipe through a plurality of transfer pipes, so as to form a negative pressure at the connection between the collection pipe and each branch pipe. At the same time, by cooperating with the regulating member to control the air intake volume of each branch pipe, it is ensured that the negative pressure intensity at various places in the collection pipe is as uniform as possible. Therefore, by introducing a regulating member and a transfer pipe into the negative pressure device and optimizing the pipeline layout in the present application, the uniformity of the negative pressure intensity at various places in the collection pipe is improved, thereby improving the stability of the film surface and the product quality. Correspondingly, the uniform negative pressure intensity helps to improve the stability of the film surface, reduce the fluctuations of the film during the production process, thereby improving the flatness and thickness uniformity of the film and ensuring the product quality. And by precisely controlling the air volume of each branch pipe, unnecessary air volume waste can be reduced, the energy efficiency of the entire negative pressure system can be improved, and the energy consumption can be reduced. In addition, the presence of the regulating member enables the negative pressure device to adapt to different production requirements. By adjusting the air volume of each branch pipe, it can flexibly respond to the production requirements of different film thicknesses or widths, improving the adaptability and production efficiency of the equipment.

[0026] The present application further relates to a casting device. Since the above negative pressure device has the above technical effects, the casting device including this negative pressure device should have the same technical effects, which will not be elaborated here.

[0027] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 Shows a schematic structural view of a negative pressure device provided by an embodiment of the present application from one perspective;

[0030] Figure 2 Shows a schematic structural view of a negative pressure device provided by an embodiment of the present application from another perspective;

[0031] Figure 3 The figure shows a schematic structural view of another perspective of a negative pressure device provided by an embodiment of the present application.

[0032] Description of main component symbols:

[0033] 100 - Exhaust duct; 110 - Connection section; 200 - Adapter duct; 210 - Main duct; 211 - First pipe section; 212 - Second pipe section; 213 - Third pipe section; 214 - Fourth pipe section; 220 - Branch duct; 300 - Set reference plane; 400 - Adjusting member; 500 - Collection duct; 600 - Sub - duct. Detailed implementation manners

[0034] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0036] In the present application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication 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 present application can be understood according to specific circumstances.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise clearly and specifically defined.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of the template are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0039] In the related art, after the melt of the casting equipment is extruded from the die head, it is stably adsorbed on the casting roller for transportation through a negative pressure device, and the negative pressure extraction pipeline of the negative pressure device is designed in a single-stage one-to-many manner. Among them, one end of the multiple branch pipes is connected to the suction hood with a hose, and the other end is welded to the collecting pipe, and the multiple branch pipes are evenly distributed on the collecting pipe. An exhaust duct is welded to the other side of the collecting pipe, and the exhaust duct is connected to the external fan. When the equipment is operating normally, the fan is controlled to exhaust air outward from the exhaust duct to the collecting pipe, to the branch pipe, and finally through the connecting hose to obtain an outward wind pressure, so that a certain degree of negative pressure is formed in the chamber of the entire suction hood, and the continuous negative pressure is used to make the film surface continue to be attached to the roller surface of the casting roller.

[0040] However, due to the pipe connection characteristics of the negative pressure device, the exhaust volume of multiple branch pipes on the collecting pipe has great differences, and the negative pressure strength at the corresponding multiple branch pipes also has great differences; among which, the negative pressure strength will affect the stability of the membrane surface and affect the product quality.

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, in order to solve the above technical problems, an embodiment of the present application provides a negative pressure device, which includes an exhaust duct 100, an adapter duct 200, a collecting duct 500, a branch duct 600 and an adjusting member 400; wherein, the number of the adapter ducts 200 and the number of the branch ducts 600 are both multiple, and the exhaust duct 100 is connected to the collecting duct 500 through multiple adapter ducts 200, respectively, and the connection points of the multiple adapter ducts 200 and the collecting duct 500 are arranged at intervals along the extension direction of the collecting duct 500; one ends of the multiple branch ducts 600 are respectively connected to the collecting duct 500, and the connection points of the multiple branch ducts 600 and the collecting duct 500 are arranged at intervals along the extension direction of the collecting duct 500, and the adapter duct 200 and / or the branch duct 600 are connected with an adjusting member 400 with adjustable air volume.

[0042] In these embodiments, the exhaust duct 100 is connected to the collecting duct 500 through a plurality of adapter ducts 200, and the connection points of these adapter ducts 200 and the collecting duct 500 are arranged at intervals along the extending direction of the collecting duct 500. One ends of a plurality of branch ducts 600 are respectively connected to the collecting duct 500, and the connection points of these branch ducts 600 and the collecting duct 500 are also arranged at intervals along the extending direction of the collecting duct 500. The branch ducts 600 are used to connect the suction hoods.

[0043] Wherein, an adjusting member 400 for adjusting the air volume is connected to the adapter duct 200 and / or the branch duct 600, and is used to control the air volume passing through each adapter duct 200 and / or branch duct 600, so as to achieve the purpose of adjusting the negative pressure intensity at various places of the collecting duct 500.

[0044] Exemplarily, an adjusting member 400 for adjusting the air volume is connected to the adapter duct 200. Since a plurality of adapter ducts 200 are respectively connected to various positions on the length of the collecting duct 500, the lengths of the adapter ducts 200 are different. Furthermore, by adjusting the above-mentioned adjusting member 400, the air intake volume of each adapter duct 200 is controlled, the distribution of the air intake volume of each adapter duct 200 is realized, and the negative pressure intensity at various places in the collecting duct 500 and the inlet of the branch duct 600 can be made basically consistent. For example, the air intake volume of the longer adapter duct 200 is increased, and the air intake volume of the shorter adapter duct 200 is decreased, so as to achieve the purpose of balancing the negative pressure intensity at various places in the collecting duct 500.

[0045] Of course, in other embodiments, an adjusting member 400 for adjusting the air volume is connected to the branch duct 600. Since a plurality of branch ducts 600 are respectively connected to various positions on the length of the collecting duct 500, by adjusting the above-mentioned adjusting member 400, the air intake volume of each branch duct 220 is controlled, the distribution of the air intake volume of each branch duct 600 is realized, and the negative pressure intensity at various places in the collecting duct 500 and the inlet of the branch duct 600 can be made basically consistent. For example, the air intake volume on the branch duct 600 close to the connection of the adapter duct 200 and the collecting duct 500 is decreased, and the air intake volume on the branch duct 600 far from the connection of the adapter duct 200 and the collecting duct 500 is increased, so as to achieve the purpose of balancing the air intake volume of each branch duct 600.

[0046] Alternatively, adjusting members 400 for adjusting the air volume are connected to both the adapter duct 200 and the branch duct 600. Therefore, by simultaneously adjusting the adjusting members 400 of the adapter duct 200 and the branch duct 600, the adjustment accuracy can be further improved, and the negative pressure intensity at various places in the collecting duct 500 can be balanced. The specific operation process can refer to the above operation and will not be elaborated here.

[0047] For ease of understanding, the working process of the present application is provided as follows: the exhaust duct 100 extracts the air in the collecting duct 500 through multiple adapter ducts 200, and the collecting duct 500 distributes the air to be inhaled to each branch duct 600. In other words, the air sucked by the exhaust duct 100 can form a negative pressure in the collecting duct 500, and a negative pressure is formed at the air inlet of the branch duct 600. At the same time, the air intake volume of each branch duct 600 is controlled by the adjusting member 400 to ensure that the negative pressure intensity at each location in the collecting duct 500 is as uniform as possible.

[0048] Therefore, the present application achieves an improvement in the uniformity of the negative pressure strength at various locations in the collecting pipe 500 by introducing an adjusting member 400 and a transfer pipe 200 into the negative pressure device and optimizing the pipe layout, thereby improving the stability of the membrane surface and improving the product quality. Correspondingly, the uniform negative pressure strength helps to improve the stability of the membrane surface and reduce the fluctuation of the film during the production process, thereby improving the flatness and thickness uniformity of the film and ensuring the product quality. In addition, by accurately controlling the air volume of each branch pipe 600, unnecessary air volume waste can be reduced, the energy efficiency of the entire negative pressure system can be improved, and energy consumption can be reduced. In addition, the presence of the adjusting member 400 enables the negative pressure device to adapt to different production needs. By adjusting the air volume of each branch pipe 600, it can flexibly respond to production requirements of different film thicknesses or widths, thereby improving the adaptability and production efficiency of the equipment.

[0049] In some embodiments, the negative pressure device also includes a pressure detection component, which is connected to the branch pipe 600 and is used to detect the wind pressure in the branch pipe 600; in the gas flow direction in the branch pipe, the pressure detection component is located upstream of the regulating component 400.

[0050] In these embodiments, the negative pressure device further optimizes wind pressure control and monitoring by adding a pressure detection member. The pressure detection member is connected to the branch pipe 600 and is used to monitor the wind pressure at the air inlet of the branch pipe 600 in real time. This helps to ensure that the wind pressure in the entire negative pressure system can be maintained within the required range, thereby improving the stability of the membrane surface and ensuring product quality.

[0051] In the gas flow direction within the branch duct, the pressure detection component is located upstream of the adjustment component 400. This means that before the gas passes through the adjustment component 400 for air volume adjustment, the pressure detection component can already detect the wind pressure within the branch duct 600. Such a layout helps to obtain the wind pressure information in a timely manner, and accordingly adjust the adjustment component 400 to adjust the air intake volume of the branch duct 600 to reach the required wind pressure level. Exemplarily, the adjustment component 400 in this application is a regulating valve, and the air intake volume of the branch duct 600 can be adjusted by adjusting the opening degree of the regulating valve. Of course, in other embodiments, the adjustment component 400 can also be set as an electronic proportional valve, which is a valve that can precisely control the opening degree through an electric signal and can achieve continuous adjustment of the air volume; or, the adjustment component 400 is set as a slide valve, a butterfly valve, etc.

[0052] When the negative pressure device is operating, the pressure detection component continuously monitors the wind pressure within the inlet of the branch duct 600. If the detected wind pressure deviates from the preset value, it can be adjusted through the adjustment component 400 to restore to the required wind pressure level, so that the entire system can more precisely control the wind pressure, thereby improving the stability of the membrane surface and the quality of the product. Exemplarily, when the detected wind pressure is lower than the preset value, the air intake volume of the branch duct 600 can be reduced; when the detected wind pressure is higher than the preset value, the air intake volume of the branch duct 600 can be increased.

[0053] Obviously, by monitoring and adjusting the wind pressure in real time, it can be ensured that the wind pressure is always within the ideal range, improving the control accuracy of the system. Precise wind pressure control helps to improve the stability of the membrane surface, reduce the fluctuations of the thin film during the production process, thereby improving the flatness and thickness uniformity of the thin film and ensuring the product quality. Of course, by precisely controlling the wind pressure, unnecessary air volume waste can be reduced, the energy efficiency of the entire negative pressure system can be improved, and the energy consumption can be reduced.

[0054] As Figure 1 、 Figure 2 and Figure 3 shown, in some embodiments, the adjustment component 400 includes a wind valve, and the adapter pipe 200 and / or the branch duct 600 are connected with the wind valve; the pressure detection component includes a wind pressure detection sensor, and the wind pressure detection sensor is connected with the branch duct 600.

[0055] In these embodiments, the negative pressure device further optimizes the wind pressure control and monitoring mechanism by integrating the wind valve and the wind pressure detection sensor. The wind valve serves as the adjustment component 400, and the wind valve is connected with the adapter pipe 200 and / or the branch duct 600 and is used to adjust the air volume passing through the corresponding pipe. That is to say, by adjusting the opening degree of the wind valve, the air intake volume of the branch duct 600 can be controlled, thereby adjusting the negative pressure intensity and ensuring the stability of the membrane surface.

[0056] The wind pressure detection sensor is connected to the branch duct 600 and is used to monitor the wind pressure in the branch duct 600 in real time. The wind pressure data obtained by the wind pressure detection sensor can be used to adjust the opening degree of the air valve to maintain the required wind pressure level.

[0057] During operation, the air valve initially adjusts the air volume according to the preset opening degree. The wind pressure detection sensor continuously monitors the wind pressure in the branch duct 600 and transmits the data to the control system. If the detected wind pressure deviates from the preset value, the control system will automatically adjust the opening degree of the air valve to restore to the required wind pressure level.

[0058] Thus, such a closed-loop control system can ensure that the negative pressure intensity is as uniform as possible throughout the negative pressure device, improving the stability of the membrane surface and the product quality.

[0059] Of course, in other embodiments, the wind pressure detection sensor is connected to a display device that can display the wind pressure in real time, and then the staff can manually adjust the air valve.

[0060] Exemplarily, the air valve is an electric control valve; of course, in other embodiments, the air valve can also be a manual control valve, a pneumatic control valve, etc.

[0061] Such as Figure 1 、 Figure 2 and Figure 3 As shown, in some embodiments, the number of transfer ducts 200 is a pair, and the pair of transfer ducts 200 are symmetrically arranged with respect to the set reference plane 300; wherein, the collecting duct 500 has a transverse symmetry plane, and the transverse symmetry plane coincides with the set reference plane 300; the exhaust duct 100 has a connecting section 110, and the connecting section 110 is connected to the transfer duct 200, and the axis of the connecting section 110 is located on the set reference plane 300.

[0062] In these embodiments, the number of transfer ducts 200 is a pair and is symmetrically arranged with respect to the set reference plane 300. This setting helps to ensure a more uniform air volume distribution from the exhaust duct 100 to the collecting duct 500, thereby improving the uniformity of the negative pressure intensity at various places in the negative pressure device.

[0063] Among them, the collecting duct 500 has a transverse symmetry plane, and this transverse symmetry plane coincides with the set reference plane 300, making the collecting duct 500 symmetric in the transverse direction, which helps to further improve the uniformity of the wind pressure distribution. The exhaust duct 100 has a connecting section 110, and the connecting section 110 is connected to the transfer duct 200, and the axis of the connecting section 110 is located on the set reference plane 300. This means that the connection point between the exhaust duct 100 and the transfer duct 200 is symmetric with respect to the set reference plane 300, which helps to ensure the uniform distribution of the air volume.

[0064] The exhaust duct 100 is connected to the adapter duct 200 through the connecting section 110, and the air volume is evenly distributed from the exhaust duct 100 to the two adapter ducts 200. Since the adapter ducts 200 are symmetrically arranged with respect to the set reference plane 300, the air volume can be more evenly distributed when entering the collecting duct 500. The lateral symmetry plane of the collecting duct 500 coincides with the set reference plane 300, which helps to maintain the uniformity of the wind pressure distribution. Moreover, through the adjustment of the air valve and the feedback of the wind pressure detection sensor, the air volume of the branch duct 600 can be accurately controlled to maintain the required negative pressure intensity.

[0065] Exemplarily, the connecting section 110 and the collecting duct 500 are perpendicular, the connecting section 110 is vertically arranged, the collecting duct 500 is horizontally arranged, and a pair of adapter ducts 200 are symmetrically arranged on both sides of the connecting section 110, so as to ensure that the air intake of the collecting duct 500 is basically the same. Of course, in other embodiments, the number of adapter ducts 200 can also be set to other values, as long as it is ensured that the adapter ducts 200 can be equally divided into two groups, one group is arranged on each side of the connecting section 110, and the two groups of adapter ducts 200 are symmetric with respect to the set reference plane 300.

[0066] As Figure 1 shown, in some embodiments, the adapter duct 200 includes a main duct 210 and a branch duct 220. One end of the main duct 210 is connected to the exhaust duct 100, the other end of the main duct 210 is connected to the collecting duct 500, and the middle of the main duct 210 is connected to the collecting duct 500 through the branch duct 220; wherein, the connection between the collecting duct 500 and the main duct 210 and the connection between the collecting duct 500 and the branch duct 220 are arranged at intervals in the extending direction of the collecting duct 500.

[0067] In these embodiments, this setting enables the air volume extracted from the exhaust duct 100 to be effectively distributed into the collecting duct 500. The connection between the collecting duct 500 and the main duct 210 and the connection between the collecting duct 500 and the branch duct 220 are arranged at intervals in the extending direction of the collecting duct 500. This means that in the length direction of the collecting duct 500, the connection points are distributed, which helps to ensure that the air volume is more evenly distributed in the collecting duct 500, thereby improving the uniformity of the negative pressure intensity.

[0068] The exhaust duct 100 extracts air, enters the exhaust duct 100 through one end of the main duct 210, the gas in the collecting duct 500 enters the main duct 210 through the other end of the main duct 210, the main duct 210 distributes the extracted air volume to both ends of the collecting duct 500, and at the same time distributes the extracted air volume to the middle of the collecting duct 500 through the branch duct 220. Since the connection points are arranged at intervals in the extending direction of the collecting duct 500, it helps to ensure that the air volume is more evenly distributed in the collecting duct 500.

[0069] Moreover, with the structure of the main duct 210 cooperating with the branch duct 220, the connection points of the exhaust duct 100 and the adapter duct 200 can be reduced. Furthermore, the connection points of the adapter duct 200 and the collecting duct 500 can be increased under the effective pipe diameter of the exhaust duct 100. And it can reduce the use of materials and save costs.

[0070] Such as Figure 1 , Figure 2 and Figure 3 As shown in, in some embodiments, the main duct 210 includes a first duct segment 211, a second duct segment 212, a third duct segment 213, and a fourth duct segment 214 that are connected in sequence. The first duct segment 211 is connected to the collecting duct 500, and the fourth duct segment 214 is connected to the exhaust duct 100. Among them, the first duct segment 211 is vertically arranged with the collecting duct 500, the third duct segment 213 is horizontally arranged with the collecting duct 500, and the third duct segment 213 is connected to the collecting duct 500 through the branch duct 220, and the branch duct 220 is vertically arranged with the collecting duct 500.

[0071] In these embodiments, such a design enables the air volume in the collecting duct 500 to enter the exhaust duct 100 from the main duct 210. The first duct segment 211 is vertically arranged with the collecting duct 500, which helps to ensure that the air volume can smoothly enter the main duct 210 from the collecting duct 500. The third duct segment 213 is horizontally arranged with the collecting duct 500 and is connected to the collecting duct 500 through the branch duct 220, and the branch duct 220 is vertically arranged with the collecting duct 500. This layout helps to ensure that the air volume in the collecting duct 500 can smoothly enter the main duct 210, reduce the flow resistance, and thus improve the uniformity of the negative pressure intensity.

[0072] Exemplarily, the first duct segment 211 is vertically arranged, the third duct segment 213 is horizontally arranged, the collecting duct 500 is horizontally arranged, and the connection segment 110 is vertically arranged. With such a layout, the flow resistance of the air is reduced.

[0073] In some embodiments, the included angle between the second duct segment 212 and the first duct segment 211 is 35° - 55°; the included angle between the fourth duct segment 214 and the connection segment 110 is 105° - 135°.

[0074] In these embodiments, the main pipeline 210 includes a first pipe section 211, a second pipe section 212, and a third pipe section 213 connected in sequence. Among them, the first pipe section 211 is vertically arranged with the collecting pipeline 500, the third pipe section 213 is connected to the exhaust pipeline 100, and the third pipe section 213 is connected to the collecting pipeline 500 through a branch pipeline 220, and the branch pipeline 220 is vertically arranged with the collecting pipeline 500. Among them, the included angle between the second pipe section 212 and the first pipe section 211 is designed to be 35° - 55°, and such an angle helps to ensure that the air volume can smoothly transition from the first pipe section 211 to the second pipe section 212 and be further distributed into the collecting pipeline 500.

[0075] The included angle between the fourth pipe section 214 and the connection section 110 is designed to be 105° - 135°, and such an angle helps to ensure that the air volume can smoothly transition from the exhaust pipeline 100 to the main pipeline 210 and be smoothly distributed into the collecting pipeline 500.

[0076] Exemplarily, the included angle between the second pipe section 212 and the first pipe section 211 is 45°, and 45° is the optimal ventilation angle; of course, in other embodiments, the included angle between the second pipe section 212 and the first pipe section 211 can also be 35°, 38°, 40°, 42°, 47°, 50°, 52°, 55°, etc.

[0077] Exemplarily, the included angle between the fourth pipe section 214 and the connection section 110 is 110°. Of course, in other embodiments, the included angle between the fourth pipe section 214 and the connection section 110 can also be 105°, 108°, 115°, 120°, 125°, 130°, 135°, etc.

[0078] As Figure 1 shown, in some embodiments, both the branch pipeline 220 and the main pipeline 210 are provided with the adjusting member 400, and the adjusting member 400 on the branch pipeline 220 and the adjusting member 400 on the main pipeline 210 are connected in parallel.

[0079] In these embodiments, in the gas flow direction in the main pipeline 210, the adjusting member 400 on the main pipeline 210 is located upstream of the branch pipeline 220. The air volume of the main pipeline 210 can be adjusted through the adjusting member 400 on the main pipeline 210, and the air volume of the branch pipeline 220 can be adjusted through the adjusting member 400 on the branch pipeline 220. The air volume flows out from both ends of the collecting pipeline 500 through the first pipe section 211 of the main pipeline 210, and at the same time, the air volume flows out from the middle of the collecting pipeline 500 through the branch pipeline 220. Obviously, it can ensure that the distribution of the air volume in the collecting pipeline 500 is more uniform.

[0080] As Figure 1 、 Figure 2 and Figure 3As shown, in some embodiments, the diameter of the main pipeline 210 is larger than that of the branch pipeline 220. The main pipeline 210 is connected to one end of the collecting pipeline 500, and the branch pipeline 220 is connected to the middle part of the collecting pipeline 500.

[0081] In these embodiments, the exhaust pipeline 100 is connected to the collecting pipeline 500 through a total of 4 channels, and all are vertically connected at 90°. The first pipe section 211 and the branch pipeline 220 are designed with adjustable air valves. The diameters of the two branch pipelines 220 in the middle position are smaller than those of the channels on both sides, which can enhance the air pressure on both sides and keep the air pressure in the middle as balanced as possible.

[0082] In other embodiments, the diameter of the sub-pipeline 600 can also be set to be smaller than that of the branch pipeline 220, so as to further accurately control the negative pressure intensity at various parts in the collecting pipeline 500 to be basically the same through the cooperation of the diameters.

[0083] Exemplarily, the diameter of the main pipeline 210 is 110 mm, the diameter of the branch pipeline 220 is 76 mm, and the diameter of the sub-pipeline 600 is 60 mm.

[0084] In some embodiments, the present application further provides a casting device, which includes an air suction hood and the negative pressure device described in any one of the above embodiments. The sub-pipeline 600 of the negative pressure device is connected to the air suction hood through a hose.

[0085] Since the above negative pressure device has the above technical effects, the casting device including this negative pressure device should have the same technical effects, which will not be elaborated here.

[0086] In all the examples shown and described here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0087] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0088] The above-described embodiments only represent several implementation manners of the present application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application.

Claims

1. A negative pressure device, characterized in that: The negative pressure device includes an exhaust duct, a transfer duct, a collecting duct, a branch duct and a regulating member; in The number of the adapter pipes and the number of the branch pipes are both multiple, the exhaust pipe is connected to the collecting pipe through the multiple adapter pipes respectively, and the connection points of the multiple adapter pipes and the collecting pipe are arranged at intervals along the extension direction of the collecting pipe; One ends of the plurality of branch pipes are respectively connected to the collecting pipe, and the connection points between the plurality of branch pipes and the collecting pipe are arranged at intervals along the extension direction of the collecting pipe, and the adapter pipe and / or the branch pipe are connected to the adjusting member for adjusting the air volume.

2. The negative pressure device according to claim 1, characterized in that: The negative pressure device further comprises a pressure detection member, the pressure detection member is connected to the branch pipe, and the pressure detection member is used to detect the wind pressure in the branch pipe; In the gas flow direction in the branch pipe, the pressure detecting component is located upstream of the regulating component.

3. The negative pressure device according to claim 2, characterized in that: The regulating member comprises an air valve, and the transfer pipe and / or the branch pipe are connected with the air valve; The pressure detection component includes a wind pressure detection sensor, and the wind pressure detection sensor is connected to the branch pipe.

4. The negative pressure device according to claim 1, characterized in that: The number of the adapter pipes is a pair, and the pair of adapter pipes are symmetrically arranged with respect to a set reference plane; in The collecting duct has a transverse symmetry plane, which coincides with the set reference plane; the exhaust duct has a connecting section, which is connected to the transfer duct, and the axis of the connecting section is located on the set reference plane.

5. The negative pressure device according to claim 4, characterized in that: The transfer pipeline comprises: A main pipe and a branch pipe, one end of the main pipe is connected to the exhaust pipe, the other end of the main pipe is connected to the collecting pipe, and the middle part of the main pipe is connected to the collecting pipe through the branch pipe; wherein the connection between the collecting pipe and the main pipe and the connection between the collecting pipe and the branch pipe are arranged at intervals in the extension direction of the collecting pipe.

6. The negative pressure device according to claim 5, characterized in that: The main pipeline includes a first pipe section, a second pipe section, a third pipe section and a fourth pipe section which are connected in sequence, the first pipe section is connected to the collecting pipe, and the fourth pipe section is connected to the exhaust pipe; The first pipe section and the collecting pipe are arranged vertically, the third pipe section and the collecting pipe are arranged parallelly, and the third pipe section is connected to the collecting pipe through the branch pipe, and the branch pipe and the collecting pipe are arranged vertically.

7. The negative pressure device according to claim 6, characterized in that: The angle between the second pipe section and the first pipe section is 35°-55°; The included angle between the fourth pipe section and the connecting section is 105°-135°.

8. The negative pressure device according to claim 5, characterized in that: The branch pipe and the main pipe are both provided with the regulating member, and the regulating member on the branch pipe is connected with the regulating member on the main pipe.

9. The negative pressure device according to claim 8, characterized in that: The diameter of the main pipeline is larger than that of the branch pipeline. The main pipeline is connected to one end of the collecting pipeline, and the branch pipeline is connected to the middle of the collecting pipeline.

10. A casting device, characterized in that: The casting equipment comprises a suction hood and a negative pressure device as described in any one of claims 1 to 9, and a branch pipe of the negative pressure device is connected to the suction hood.

Images