Negative pressure device

Abstract

The utility model relates to the field of material conveying, in particular to a negative pressure device which comprises a machine frame, a conveying belt conveying mechanism is arranged on the machine frame, the conveying belt conveying mechanism comprises a driving mechanism installed on the machine frame, a conveying belt is connected to the driving mechanism, and the machine frame comprises machine frame side walls, a machine frame bottom plate and a cover plate. The rack side wall, the rack bottom plate and the cover plate jointly define a negative pressure cavity, a conveying belt is arranged above the negative pressure cavity, the negative pressure cavity is connected with a negative pressure fan through a pipeline, and the negative pressure fan sucks gas in the negative pressure cavity, so that negative pressure is formed in the negative pressure cavity. The utility model provides a negative pressure device which can adsorb materials on a conveying belt through the negative pressure effect, ensures that the positions of the materials are stable in the conveying process, and meanwhile is compact in structure, easy and convenient to operate and easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of material conveying, and in particular to a negative pressure device. Background Technology

[0002] Negative pressure devices create and maintain an environment with a pressure lower than the surrounding atmosphere, using the resulting pressure difference to adsorb materials. This adsorption allows materials to adhere to the conveyor belt and move smoothly, achieving a material transport method without direct contact and significantly reducing material loss during transport. However, current negative pressure devices on the market generally suffer from large size and complex structure. These devices are often not compact enough, with complex internal structures, which not only adds extra difficulty to installation and maintenance but also occupies relatively large production spaces. Such design flaws reduce the overall reliability of the equipment and affect its economic efficiency. Furthermore, the stability and continuous operation capability of existing negative pressure devices are often difficult to guarantee during long-term continuous operation or in complex and changing working environments. Utility Model Content

[0003] In view of the above-mentioned shortcomings of current negative pressure devices, this utility model provides a negative pressure device that can adsorb materials onto the conveyor belt through negative pressure, ensuring the stability of the material's position during the conveying process.

[0004] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0005] A negative pressure device includes a frame with a conveyor belt mechanism. The conveyor belt mechanism includes a drive mechanism mounted on the frame and a conveyor belt connected to the drive mechanism. A negative pressure chamber is provided inside the frame, and the conveyor belt is positioned above the negative pressure chamber. The negative pressure chamber is connected to a negative pressure fan via a pipe. The negative pressure fan draws gas from inside the negative pressure chamber, thereby creating a negative pressure inside the chamber.

[0006] According to one aspect of the present invention, it further includes a gas distribution device, which includes a gas distribution device inlet and a gas distribution device outlet. The gas distribution device inlet is connected to the negative pressure chamber through a pipe, and the gas distribution device outlet is connected to the negative pressure fan through a pipe.

[0007] According to one aspect of the present invention, the negative pressure chamber is provided with a negative pressure chamber air outlet, the negative pressure chamber air outlet is disposed on the side wall of the frame and / or the bottom plate of the frame, and the negative pressure chamber air outlet is connected to the air inlet of the air distribution device through a pipe.

[0008] According to one aspect of the present invention, the negative pressure cavity is provided with at least one cavity partition, the cavity partition dividing the negative pressure cavity into multiple parts, and each negative pressure cavity is provided with a negative pressure cavity air outlet.

[0009] According to one aspect of this utility model, the air outlet of the negative pressure chamber and the air inlet of the air distribution device are arranged in a one-to-one correspondence.

[0010] According to one aspect of the present invention, the negative pressure fan includes a negative pressure fan inlet and a negative pressure fan outlet, wherein the negative pressure fan inlet is connected to the air outlet of the air distribution device via a pipe.

[0011] According to one aspect of this utility model, the cover plate is provided with cavity air holes.

[0012] According to one aspect of the present invention, the conveyor belt is provided with conveyor belt air holes.

[0013] According to one aspect of the present invention, the frame is equipped with a synchronous transmission mechanism, which is disposed above the conveyor belt conveyor mechanism, and the synchronous transmission mechanism and the conveyor belt conveyor mechanism work together to compress the material.

[0014] The advantages of this invention are as follows: By connecting a negative pressure fan to a negative pressure chamber, the fan can draw in gas, creating a negative pressure environment. The combined effect of the chamber's vents and the conveyor belt's vents generates sufficient suction between the material and the conveyor belt, ensuring the material is adhered to the conveyor belt and transported forward at a fixed position. Multiple small negative pressure chambers are formed within the chamber by partitions, each connected to the fan. This ensures uniform negative pressure distribution throughout the material transport process, guaranteeing material stability. Furthermore, the air distribution device connects the outlet of each small chamber to the fan, allowing a single fan to regulate the internal pressure of the entire chamber, effectively reducing production costs. This invention provides a negative pressure device that adsorbs material onto a conveyor belt through negative pressure, ensuring stable material position during transport. It is also compact, easy to operate, and easy to maintain. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first-view three-dimensional structural diagram of a negative pressure device according to the present invention;

[0017] Figure 2 This is a cross-sectional schematic diagram of a negative pressure device according to the present invention;

[0018] Figure 3 This is a second-view three-dimensional structural diagram of a negative pressure device according to the present invention;

[0019] Figure 4 This is a schematic diagram of a synchronous transmission mechanism in a negative pressure device according to the present invention.

[0020] Numbering on the map:

[0021] 1. Frame; 11. Frame side wall; 12. Frame base plate; 13. Cover plate; 131. Cavity air vent; 2. Conveyor belt conveying mechanism; 21. Conveyor belt air vent; 22. Drive mechanism; 23. Conveyor belt; 3. Air distribution device; 31. Air distribution device inlet; 32. Air distribution device outlet; 5. Negative pressure cavity; 51. Cavity partition; 53. Negative pressure cavity outlet; 6. Negative pressure fan; 61. Negative pressure fan outlet; 62. Negative pressure fan inlet; 7. Synchronous transmission mechanism. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0025] Example 1

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, a negative pressure device, generally used in a conveying device, includes a frame 1. A conveyor belt conveying mechanism 2 is mounted on the frame 1. The conveyor belt conveying mechanism 2 includes a drive mechanism 22 mounted on the frame 1, and a conveyor belt 23 is connected to the drive mechanism 22. The frame 1 includes a frame side wall 11, a frame base plate 12, and a cover plate 13. The frame side wall 11, frame base plate 12, and cover plate 13 together enclose a negative pressure cavity 5. Preferably, the drive mechanism 22 is mounted on the frame side wall 11, and the cover plate 13 is provided with cavity air holes 131. The conveyor belt 23 is mounted above the negative pressure cavity 5, and the conveyor belt 23 is provided with conveyor belt air holes 21. The negative pressure cavity 5 is connected to a negative pressure fan 6 through a pipe. The negative pressure fan 6 can be mounted at the bottom of the frame 1 or on the floor around the frame 1. The negative pressure fan 6 draws in the gas inside the negative pressure chamber 5, creating a negative pressure inside the chamber 5. The material is placed on the conveyor belt 23. Through the chamber air holes 131 on the cover plate 13 and the conveyor belt air holes 21 on the conveyor belt 23, when the negative pressure fan 6 is started, suction is generated between the contact surface between the material and the conveyor belt conveying mechanism 2, causing the material to be conveyed forward at a fixed position on the conveyor belt 23.

[0027] In this embodiment, the negative pressure cavity 5 is provided with a negative pressure cavity air outlet 53. Preferably, the negative pressure cavity air outlet 53 is provided on the side wall 11 of the frame and / or the bottom plate 12 of the frame.

[0028] In this embodiment, the negative pressure fan 6 includes a negative pressure fan inlet 62 and a negative pressure fan outlet 61. The negative pressure fan inlet 62 is connected to the negative pressure cavity outlet 53 through a pipe.

[0029] In this embodiment, at least one cavity partition 51 is provided inside the negative pressure chamber 5. Multiple negative pressure chambers 5 are formed between the cavity partition 51 and the frame side wall 11, frame bottom plate 12, cover plate 13, and / or other cavity partitions 51. Each negative pressure chamber 5 is provided with a negative pressure chamber outlet 53, which is connected to the negative pressure fan inlet 62 via a pipe. By setting the cavity partition 51, multiple small negative pressure chambers 5 can be constructed, each with an outlet connected to the negative pressure fan inlet 62. This ensures a uniform distribution of negative pressure within the negative pressure chambers 5, guaranteeing the stability of the material throughout the entire conveying process.

[0030] Working principle: The conveyor belt conveying mechanism 2 is responsible for conveying materials. The materials are placed on the conveyor belt 23, and the drive mechanism 22 drives the conveyor belt 23 to be conveyed forward. The negative pressure fan 6 is connected to the negative pressure chamber 5. The negative pressure fan 6 draws gas from the negative pressure chamber 5, creating a negative pressure environment inside the chamber 5. Through the chamber air holes 131 on the cover plate 13 and the conveyor belt air holes 21 on the conveyor belt 23, when the negative pressure fan 6 is started, a suction force is generated between the contact surface of the materials and the conveyor belt 23, so that the materials are adsorbed on the conveyor belt 23, ensuring that the materials are conveyed forward at a fixed position on the conveyor belt 23.

[0031] The advantages of this embodiment are as follows: By connecting a negative pressure fan to the negative pressure chamber, the fan can draw in gas from the chamber, creating a negative pressure environment. The combined effect of the chamber's vents and the conveyor belt's vents generates sufficient suction between the material and the conveyor belt's contact surface, achieving material adsorption and ensuring the material is conveyed forward at a fixed position on the conveyor belt. Furthermore, by installing partitions within the negative pressure chamber, multiple smaller negative pressure chambers are formed. Each smaller chamber is connected to the negative pressure fan, ensuring uniform negative pressure distribution throughout the material conveying process and guaranteeing material stability. The negative pressure chamber is constructed using a frame enclosure, effectively reducing material usage and thus lowering production costs.

[0032] Example 2

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a negative pressure device, generally used in conveying devices, includes a frame 1. A conveyor belt mechanism 2 is mounted on the frame 1, and the conveyor belt mechanism 2 includes a drive mechanism 22 mounted on the frame 1. A conveyor belt 23 is connected to the drive mechanism 22. The frame 1 includes a frame side wall 11, a frame base plate 12, and a cover plate 13, which together form a negative pressure cavity 5. Preferably, the drive mechanism 22 is located on the frame side wall 11, and the cover plate 13 has cavity air holes 131. The conveyor belt 23 is positioned above the negative pressure cavity 5, and the conveyor belt 23 has conveyor belt air holes 21. The negative pressure cavity 5 is connected to a negative pressure fan 6 via a pipe. The negative pressure fan 6 can be located at the bottom of the frame 1 or on the floor surrounding the frame 1. The negative pressure fan 6 draws gas from inside the negative pressure cavity 5, creating a negative pressure within the cavity. The material is placed on the 23. Through the cavity air hole 131 on the cover plate 13 and the conveyor belt air hole 21 on the conveyor belt 23, when the negative pressure fan 6 is started, suction can be generated between the contact surface of the material and the conveyor belt conveying mechanism 2, so that the material is conveyed forward at a fixed position on the conveyor belt 23.

[0034] In this embodiment, the negative pressure chamber 5 is provided with a negative pressure chamber air outlet 53. Preferably, the negative pressure chamber air outlet 53 is located on the side wall 11 of the frame and / or the bottom plate 12 of the frame.

[0035] In this embodiment, a gas distribution device 3 is also included. The gas distribution device 3 includes a gas distribution device inlet 31 and a gas distribution device outlet 32. The gas distribution device inlet 31 is connected to the negative pressure chamber outlet 53 via a pipe. The negative pressure fan 6 includes a negative pressure fan inlet 62 and a negative pressure fan outlet 61. The negative pressure fan inlet 62 is connected to the gas distribution device outlet 32 ​​via a pipe. Preferably, the gas distribution device 3 can be installed on the frame 1, or it can be placed on the floor or a fixed frame around the frame 1.

[0036] In this embodiment, at least one cavity partition 51 is provided inside the negative pressure chamber 5. Multiple negative pressure chambers 5 are formed between the cavity partition 51 and the frame side wall 11, frame bottom plate 12, cover plate 13, and / or other cavity partitions 51. Each negative pressure chamber 5 is provided with a negative pressure chamber outlet 53, which is connected to the air inlet 31 of the air distribution device via a pipe. Preferably, the negative pressure chamber outlets 53 and the air inlets 31 of the air distribution device are arranged in a one-to-one correspondence. By setting the cavity partitions 51, multiple small negative pressure chambers 5 can be constructed, each with a negative pressure chamber outlet 53, and each outlet 53 is connected to the air inlet 31 of the air distribution device. This ensures a uniform distribution of negative pressure within the negative pressure chambers 5, guaranteeing the stability of the material throughout the entire conveying process.

[0037] In this embodiment, the frame 1 is equipped with a synchronous transmission mechanism 7, which is located above the conveyor belt conveyor mechanism 2. The synchronous transmission mechanism 7 and the conveyor belt conveyor mechanism 2 work together to compress the material.

[0038] Working principle: The conveyor belt conveying mechanism 2 is responsible for conveying materials. The materials are placed on the conveyor belt 23, and the drive mechanism 22 drives the conveyor belt 23 to be conveyed forward. The negative pressure fan 6 is connected to the negative pressure chamber 5 through the air distribution device 3. The negative pressure fan 6 draws gas from the negative pressure chamber 5, creating a negative pressure environment inside the chamber 5. Through the chamber air holes 131 on the cover plate 13 and the conveyor belt air holes 21 on the conveyor belt 23, when the negative pressure fan 6 is started, a suction force is generated between the contact surface of the materials and the conveyor belt 23, so that the materials are adsorbed on the conveyor belt 23, ensuring that the materials are conveyed forward at a fixed position on the conveyor belt 23.

[0039] The advantages of this embodiment are as follows: By connecting a negative pressure fan to the negative pressure chamber, the fan can draw in gas, creating a negative pressure environment. The combined effect of the chamber's vents and the conveyor belt's vents generates sufficient suction between the material and the conveyor belt, ensuring the material is adhered to the conveyor belt and transported forward at a fixed position. By installing partitions within the negative pressure chamber, multiple smaller negative pressure chambers are formed, each connected to the negative pressure fan. This ensures uniform negative pressure distribution throughout the material transport process, guaranteeing material stability. The air distribution device connects the outlet of each smaller negative pressure chamber to the negative pressure fan, allowing a single fan to regulate the air pressure within the entire chamber, effectively reducing production costs. This negative pressure device is compact, simple, and easy to implement.

[0040] The advantages of this invention are as follows: By connecting a negative pressure fan to a negative pressure chamber, the fan can draw in gas, creating a negative pressure environment. The combined effect of the chamber's vents and the conveyor belt's vents generates sufficient suction between the material and the conveyor belt, ensuring the material is adhered to the conveyor belt and transported forward at a fixed position. Multiple small negative pressure chambers are formed within the chamber by partitions, each connected to the fan. This ensures uniform negative pressure distribution throughout the material transport process, guaranteeing material stability. Furthermore, the air distribution device connects the outlet of each small chamber to the fan, allowing a single fan to regulate the internal pressure of the entire chamber, effectively reducing production costs. This invention provides a negative pressure device that adsorbs material onto a conveyor belt through negative pressure, ensuring stable material position during transport. It is also compact, easy to operate, and easy to maintain.

[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A negative pressure device, comprising a frame (1), wherein a conveyor belt conveying mechanism (2) is provided on the frame (1), the conveyor belt conveying mechanism (2) includes a drive mechanism (22) mounted on the frame (1), and a conveyor belt (23) is connected to the drive mechanism (22), characterized in that, The frame (1) is provided with a negative pressure chamber (5), and a conveyor belt (23) is provided above the negative pressure chamber (5). The negative pressure chamber (5) is connected to a negative pressure fan (6) through a pipe. The negative pressure fan (6) draws in the gas inside the negative pressure chamber (5) so that a negative pressure is formed inside the negative pressure chamber (5).

2. The negative pressure device according to claim 1, characterized in that, It also includes a gas distribution device (3), which includes a gas distribution device inlet (31) and a gas distribution device outlet (32). The gas distribution device inlet (31) is connected to the negative pressure chamber (5) through a pipe, and the gas distribution device outlet (32) is connected to the negative pressure fan (6) through a pipe.

3. The negative pressure device according to claim 2, characterized in that, The negative pressure cavity (5) is provided with a negative pressure cavity air outlet (53), which is located on the side wall (11) of the frame and / or the bottom plate (12) of the frame. The negative pressure cavity air outlet (53) is connected to the air inlet (31) of the air distribution device through a pipe.

4. The negative pressure device according to claim 3, characterized in that, The negative pressure cavity (5) is provided with at least one cavity partition (51), which divides the negative pressure cavity (5) into multiple parts, and each negative pressure cavity (5) is provided with a negative pressure cavity air outlet (53).

5. The negative pressure device according to claim 4, characterized in that, The negative pressure chamber air outlet (53) is set in a one-to-one correspondence with the air inlet (31) of the air distribution device.

6. The negative pressure device according to claim 2, characterized in that, The negative pressure fan (6) includes a negative pressure fan inlet (62) and a negative pressure fan outlet (61). The negative pressure fan inlet (62) is connected to the air outlet (32) of the gas distribution device through a pipe.

7. The negative pressure device according to claim 1, characterized in that, The negative pressure device is also provided with a cover plate (13), and the cover plate (13) is provided with a cavity air hole (131).

8. The negative pressure device according to claim 1, characterized in that, The conveyor belt (23) is provided with conveyor belt air holes (21).

9. The negative pressure device according to claim 1, characterized in that, The frame (1) is equipped with a synchronous transmission mechanism (7), which is located above the conveyor belt conveyor mechanism (2). The synchronous transmission mechanism (7) and the conveyor belt conveyor mechanism (2) work together to compress the material.

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