Negative pressure suction machine dredging mechanism

Abstract

The utility model discloses a kind of negative pressure suction machine dredging mechanism, belong to material conveying field, including tank, the top of the tank is fixedly connected with negative pressure pump, one side of the tank is fixedly connected with suction pipe, the outside of the suction pipe is equipped with dredging component for dredging suction pipe, the bottom of the tank is fixedly connected with discharge pipe, the dredging component includes the connecting pipe of fixed connection in the bending place of suction pipe and the communication of suction pipe;The negative pressure suction machine dredging mechanism is completely sealed and isolated with material flow channel in non-working state by setting connecting pipe and internal sealing plate, does not produce any resistance and interference to normal material conveying, completely avoids the disadvantage that similar spiral blade and other common mechanism itself is easy to cause blockage, only when blockage occurs, gas pulse is started momentarily to dredge, greatly reduces the conventional energy consumption of equipment, realizes the real "dredging as needed", and energy-saving effect is remarkable.

Description

Technical Field

[0001] This utility model belongs to the field of material conveying technology, specifically relating to a dredging mechanism for a negative pressure suction material machine. Background Technology

[0002] Negative pressure feeders are indispensable automated conveying equipment in industries such as injection molding, extrusion, food, and pharmaceuticals. They achieve centralized, long-distance conveying of powdery and granular materials through the principle of negative pressure. They have advantages such as simple installation and stable operation. However, in practical applications, when conveying materials with high humidity, easy to absorb moisture and clump, or containing slight fibrous impurities, the materials are very likely to adhere and accumulate inside the suction pipe, especially in the bends, eventually causing blockage. Pipe blockage will cause the conveying system to stop, seriously restricting production efficiency and increasing the labor intensity and safety hazards of manual cleaning and maintenance. To solve the aforementioned blockage problem, existing technologies typically integrate various unblocking mechanisms into the suction material machine. For example, CN218987589U discloses an unblocking mechanism for a negative pressure suction material machine, which relates to the field of negative pressure suction material machine technology. This utility model includes a base plate, a column welded to the top of the base plate, an operating box welded to one side wall of the column, a hopper welded to the bottom of the operating box, a discharge pipe welded to the bottom of the hopper, a partition welded to the inner side wall of the operating box, the partition dividing the interior of the operating box into an installation chamber and a negative pressure chamber in sequence, and a suction pipe welded to one side wall of the operating box, which is connected to the negative pressure chamber. This utility model effectively avoids the accumulation and blockage of powder and granular materials in the negative pressure chamber by setting a clearing mechanism in the feeding pipe and using spiral blades to assist feeding. This ensures the normal operation of the negative pressure suction machine and to a certain extent guarantees the working efficiency of the negative pressure suction machine. At the same time, the sealing mechanism on the feeding pipe can completely open the feeding pipe to assist the feeding operation and greatly improve the practicality of the device. In the actual use of the above cases, the unblocking mechanism (spiral blades) itself, as an obstacle placed in the pipeline for a long time, continuously changes the flow pattern of materials, interfering with normal material flow. This, to some extent, increases the risk of material sticking to the walls and remaining, creating a hidden danger for the next blockage. To prevent blockage, this solution often requires the spiral blades to operate intermittently or even continuously during the conveying process. This "preventive" or "remedial" continuous operation mode will undoubtedly significantly increase the energy consumption of the equipment. For production lines that need to operate continuously for a long time, the cumulative energy cost is huge, which contradicts the current industrial pursuit of energy conservation and emission reduction. Utility Model Content

[0003] The purpose of this invention is to provide a negative pressure suction material unblocking mechanism to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a negative pressure suction material machine unblocking mechanism, comprising a material tank, a negative pressure pump fixedly connected to the top of the material tank, a suction pipe fixedly connected to one side of the material tank, an unblocking component for unblocking the suction pipe provided outside the suction pipe, and a discharge pipe fixedly connected to the bottom of the material tank.

[0005] In a preferred embodiment, the unblocking component includes a connecting pipe fixedly connected to the bend of the suction pipe and communicating with the suction pipe. A compressed air tank is fixedly connected to the top end of the connecting pipe, and a valve is provided on the outside of the outlet of the compressed air tank.

[0006] In a preferred embodiment, a trapezoidal guide block is fixedly connected to one end of the connecting tube located on the inner wall of the suction tube, and the two inclined surfaces of the guide block face the two straight ends of the suction tube respectively.

[0007] In a preferred embodiment, the connecting tube has a first channel and a second channel inside, the aperture of the first channel is smaller than the aperture of the second channel, and a sealing plate is slidably connected at the connection between the first channel and the second channel.

[0008] In a preferred embodiment, four guide posts are fixedly connected to the bottom of the first channel in a ring. The sealing plate is slidably connected to the outside of the guide posts. The top of the sealing plate is in contact with the output end of the first channel. A spring sleeved on the outside of the guide posts is fixedly connected to the bottom of the guide posts on the side of the sealing plate facing the outlet of the connecting pipe.

[0009] In a preferred embodiment, an auxiliary frame is fixedly connected to one side of the top of the material tank. The end of the auxiliary frame is wrapped around the outside of the compressed gas tank. A base frame is fixedly connected to the bottom of the auxiliary frame. A rotating wheel is rotatably connected to the bottom end of the base frame. Multiple rotating fan blades are fixedly connected to the outside of the rotating wheel in a ring at equal intervals.

[0010] In a preferred embodiment, a side tube with a smaller aperture is fixedly connected to one side of the connecting tube, and a force-receiving groove is provided on the side of the rotating fan blade facing the side tube. A striking plate is fixedly connected to the outside of the rotating wheel, and the suction tube is located on the movement trajectory of the striking plate. The striking plate is made of elastic material.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The negative pressure suction material unblocking mechanism, through the setting of connecting pipes and internal sealing plates, is completely sealed and isolated from the material flow channel when not in operation, and does not generate any resistance or interference to normal material conveying. It completely avoids the drawbacks of conventional mechanisms such as spiral blades that are prone to blockage. Only when blockage occurs is the air pulse activated instantly to unblock, which greatly reduces the conventional energy consumption of the equipment and achieves true "unblocking on demand", with significant energy-saving effect. The negative pressure suction material machine's unblocking mechanism uses the residual air discharged during unblocking to drive rotating fan blades, which in turn drive the striking plate to periodically strike the wall of the suction pipe. This high-frequency vibration can effectively shake off the material adhering to the pipe wall, further preventing blockage. It forms a dual anti-blocking mode of "active air flushing unblocking combined with passive vibration prevention", which greatly improves the reliability of the equipment. Attached Figure Description

[0012] Figure 1 This is a front view of the structure of this utility model; Figure 2 This is a partial cross-sectional view of the suction pipe; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 for Figure 2 Enlarged diagram of point B.

[0013] In the diagram: 1. Material tank; 101. Suction pipe; 102. Discharge pipe; 2. Negative pressure pump; 3. Connecting pipe; 301. Guide block; 302. First channel; 303. Second channel; 304. Guide column; 305. Sealing plate; 306. Spring; 307. Side pipe; 4. Compressed air tank; 5. Valve; 6. Auxiliary frame; 601. Base frame; 602. Rotating wheel; 603. Rotating fan blade; 604. Force groove; 605. Striking plate. Detailed Implementation

[0014] The present invention will be further described below with reference to the embodiments.

[0015] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0016] Please see Figures 1-4This utility model provides a unclogging mechanism for a negative pressure suction material machine, including a material tank 1. A negative pressure pump 2 is fixedly connected to the top of the material tank 1. A suction pipe 101 is fixedly connected to one side of the material tank 1. An unclogging component for unblocking the suction pipe 101 is provided on the outside of the suction pipe 101. A discharge pipe 102 is fixedly connected to the bottom of the material tank 1. The unclogging component includes a connecting pipe 3 fixedly connected to the bend of the suction pipe 101 and communicating with the suction pipe 101. A compressed air tank 4 is fixedly connected to the top of the connecting pipe 3. A valve 5 is provided on the outside of the outlet of the compressed air tank 4. A trapezoidal guide block 301 is fixedly connected to the inner wall of the suction pipe 101 at one end of the connecting pipe 3. The guide block 301 has two inclined surfaces. Facing the two straight ends of the suction pipe 101 respectively, the inside of the connecting pipe 3 is provided with a first channel 302 and a second channel 303. The aperture of the first channel 302 is smaller than that of the second channel 303. A sealing plate 305 is slidably connected at the connection between the first channel 302 and the second channel 303. Four guide posts 304 are fixedly connected to the bottom end of the first channel 302 in a ring. The sealing plate 305 is slidably connected to the outside of the guide posts 304. The top of the sealing plate 305 is in contact with the output end of the first channel 302. A spring 306 sleeved on the outside of the guide post 304 is fixedly connected to the bottom end of the guide post 304 on the side of the sealing plate 305 facing the outlet of the connecting pipe 3. The negative pressure pump 2 starts working, creating a negative pressure environment in the material tank 1. Since the material tank 1 is connected to the suction pipe 101, a negative pressure is also generated inside the suction pipe 101, causing the material to be sucked in from the inlet of the suction pipe 101 and transported along the suction pipe 101 towards the material tank 1. During this process, the sealing plate 305 in the unblocking assembly is tightly attached to the output end of the first channel 302 under the elastic force of the spring 306, completely sealing the first channel 302. At the same time, the two inclined surfaces of the guide block 301 face the two straight ends of the suction pipe 101 respectively, guiding the material so that the material can pass smoothly through both sides of the guide block 301, reducing the accumulation and obstruction of the material at the connecting pipe 3, and ensuring the smoothness of the material transport. At this time, the compressed air tank 4 is in a closed state, the valve 5 is closed, and the entire unblocking assembly does not participate in the material transport process and will not interfere with the normal flow of the material. When the suction pipe 101 is blocked, the negative pressure generated by the negative pressure pump 2 cannot be maintained normally. At this time, the valve 5 of the output port of the compressed air tank 4 is opened. After the valve 5 is opened, the high pressure gas in the compressed air tank 4 rushes towards the sealing plate 305 through the second channel 303 of the connecting pipe 3. Since the impact force of the high pressure gas is greater than the elastic force of the spring 306, the sealing plate 305 slides down along the guide post 304, compressing the spring 306, causing the first channel 302 to open. The high pressure gas is instantly sprayed into the blocked part of the suction pipe 101 through the first channel 302, forming a powerful air pulse, which impacts and disturbs the blocked material, loosens and disperses the material, thereby achieving the purpose of unblocking the suction pipe 101. After the gas in the compressed air tank 4 is discharged for a period of time, the blockage is cleared, the material in the suction pipe 101 resumes flow, and the negative pressure value in the tank 1 gradually returns to normal. At this time, the control system issues a command to close valve 5, and the compressed air tank 4 stops supplying gas. As the gas stops being discharged, the high-pressure gas impact force on the sealing plate 305 disappears. Under the elastic force of the spring 306, the sealing plate 305 slides upward along the guide post 304 and re-fits tightly against the output end of the first channel 302, sealing the first channel 302 and restoring the unblocking component to its initial state, thus avoiding any impact on subsequent normal material conveying.

[0017] In this embodiment, an auxiliary frame 6 is fixedly connected to one side of the top of the material tank 1. The end of the auxiliary frame 6 is wrapped around the outside of the compressed air tank 4. A base frame 601 is fixedly connected to the bottom of the auxiliary frame 6. A rotating wheel 602 is rotatably connected to the bottom end of the base frame 601. Multiple rotating fan blades 603 are fixedly connected to the outside of the rotating wheel 602 in an annular shape at equal intervals. A side tube 307 with a smaller aperture is fixedly connected to one side of the connecting pipe 3. A force-receiving groove 604 is opened on the side of the rotating fan blades 603 facing the side tube 307. A striking plate 605 is fixedly connected to the outside of the rotating wheel 602. The suction pipe 101 is located on the movement trajectory of the striking plate 605. The striking plate 605 is made of elastic material. During the unblocking process, some of the residual gas discharged from the compressed air tank 4 will be ejected at high speed through the side pipe 307 with a smaller orifice. Due to the small orifice of the side pipe 307, the residual gas is ejected at a high speed and impacts the force groove 604 opened on the rotating fan blade 603. According to the principle of force, the residual gas generates an impact force on the rotating fan blade 603, causing the rotating fan blade 603 to drive the rotating wheel 602 to rotate around the shaft at the bottom end of the base frame 601. When the rotating wheel 602 rotates, the striking plate 605, which is fixedly connected to the outside of the rotating wheel 602, will move in a circular motion along with the rotating wheel 602. Since the suction pipe 101 is located on the movement trajectory of the striking plate 605, the striking plate 605 will periodically strike the pipe wall of the suction pipe 101 during the rotation. Since the striking plate 605 is made of elastic material, it will produce a certain elastic deformation when striking the pipe wall, thereby generating a high-frequency vibration on the pipe wall. This high-frequency vibration can effectively shake off the material adhering to the pipe wall of the suction pipe 101, further preventing the occurrence of blockage. Unlike traditional unblocking mechanisms (such as auger blades and other normally stationary mechanisms), this unblocking mechanism completely seals the first channel 302 with the sealing plate 305 when not in operation, isolating the unblocking components from the material flow channel and causing no resistance or interference to normal material conveying. Only when a blockage is detected in the suction pipe 101 will the air pulse be activated instantly to unblock the blockage, avoiding the energy consumption caused by the continuous operation of normally stationary mechanisms and achieving true "unblocking on demand". This greatly reduces the conventional energy consumption of the equipment. For production lines that need to operate continuously for a long time, it can effectively reduce the cumulative energy consumption cost, which is in line with the current industrial pursuit of energy conservation and consumption reduction. When the suction pipe 101 is blocked, the high-pressure gas released by the compressed air tank 4 forms a powerful air pulse, which can quickly impact and disturb the blocked part, effectively clear the blocked material, and restore the normal material conveying. This active air-pumping clearing method has strong force and good clearing effect, which can quickly solve the blockage problem, reduce equipment downtime, and improve production efficiency. The residual air released during unblocking drives the rotating fan blade 603 to rotate, which in turn drives the striking plate 605 to periodically strike the wall of the suction pipe 101, generating high-frequency vibration. This vibration can effectively shake off the material adhering to the pipe wall, preventing the material from accumulating and caking on the pipe wall, thus preventing blockage from the source. Through the dual anti-blocking mode of "active air flushing unblocking combined with passive vibration prevention", the reliability of the equipment is greatly improved, the number of equipment failures and maintenance caused by blockage is reduced, and the labor intensity and safety hazards of manual cleaning and maintenance are reduced.

[0018] The working principle and usage process of this utility model are as follows: First, the negative pressure pump 2 operates, creating negative pressure in the material tank 1. The material is sucked into the material tank 1 through the suction pipe 101 and transported to the material tank 1. At this time, in the unblocking component, the sealing plate 305 seals the first channel 302 under the elastic force of the spring 306, and the guide block 301 guides the material smoothly through the connecting pipe 3. The compressed air tank 4 is closed, and the valve 5 is shut off. The component does not interfere with the material conveying. When the suction pipe 101 is blocked, the negative pressure is abnormal. When valve 5 is opened, the high-pressure gas in the compressed air tank 4 passes through the second channel 303 to break through the sealing plate 305. The first channel 302 is opened, and the gas forms a gas pulse to impact the blocked material, making it loose and dispersed, thus achieving the purpose of unblocking. After the blockage is cleared by gas discharge for a period of time, the material resumes flow, the negative pressure is normal, valve 5 is closed to stop the gas supply, and the sealing plate 305 is reset and sealed in the first channel 302 under the action of spring 306, restoring the initial state; During the unblocking process, the residual air in the compressed air tank 4 is ejected at high speed through the side pipe 307, impacting the force groove 604 of the rotating fan blade 603, driving the rotating wheel 602 to rotate, and the striking plate 605 makes a circular motion and periodically strikes the wall of the suction pipe 101, generating high-frequency vibration to shake off the adhering material and prevent blockage.

[0019] It should be noted that the internal inflation method of the compressed air tank 4 is a publicly available technology, and the installation method between the negative pressure pump 2 and the material tank 1, as well as the related structure and principle for forming negative pressure suction, are all publicly available technologies, and will not be elaborated on here.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A negative pressure suction material unblocking mechanism, comprising a material tank (1), characterized in that: A negative pressure pump (2) is fixedly connected to the top of the material tank (1), a suction pipe (101) is fixedly connected to one side of the material tank (1), a unclogging component for unclogging the suction pipe (101) is provided on the outside of the suction pipe (101), and a discharge pipe (102) is fixedly connected to the bottom of the material tank (1).

2. The unblocking mechanism of a negative pressure suction material machine according to claim 1, characterized in that: The unblocking component includes a connecting pipe (3) fixedly connected to the bend of the suction pipe (101) and communicating with the suction pipe (101). A compressed air tank (4) is fixedly connected to the top of the connecting pipe (3), and a valve (5) is provided on the outside of the outlet of the compressed air tank (4).

3. The unblocking mechanism of a negative pressure suction material machine according to claim 2, characterized in that: The connecting pipe (3) is fixedly connected to a trapezoidal guide block (301) at one end of the inner wall of the suction pipe (101), and the two inclined surfaces of the guide block (301) face the two straight ends of the suction pipe (101) respectively.

4. The unblocking mechanism of a negative pressure suction material machine according to claim 3, characterized in that: The connecting pipe (3) has a first channel (302) and a second channel (303) inside. The aperture value of the first channel (302) is smaller than the aperture diameter of the second channel (303). A sealing plate (305) is slidably connected at the connection between the first channel (302) and the second channel (303).

5. The unblocking mechanism of a negative pressure suction material machine according to claim 4, characterized in that: The bottom end of the first channel (302) is fixedly connected with four guide posts (304) in a ring. The sealing plate (305) is slidably connected to the outside of the guide posts (304). The top of the sealing plate (305) is in contact with the output end of the first channel (302). The side of the sealing plate (305) facing the outlet of the connecting pipe (3) is fixedly connected to the bottom end of the guide post (304) with a spring (306) sleeved on the outside of the guide post (304).

6. The unblocking mechanism of a negative pressure suction material machine according to claim 5, characterized in that: An auxiliary frame (6) is fixedly connected to one side of the top of the material tank (1). The end of the auxiliary frame (6) is wrapped around the outside of the compressed air tank (4). A base frame (601) is fixedly connected to the bottom of the auxiliary frame (6). A rotating wheel (602) is rotatably connected to the bottom end of the base frame (601). Multiple rotating fan blades (603) are fixedly connected to the outside of the rotating wheel (602) in an annular shape at equal intervals.

7. The unblocking mechanism of a negative pressure suction material machine according to claim 6, characterized in that: A side tube (307) is fixedly connected to one side of the connecting tube (3). A force-bearing groove (604) is provided on the side of the rotating fan blade (603) facing the side tube (307). A striking plate (605) is fixedly connected to the outside of the rotating wheel (602). The suction tube (101) is located on the movement trajectory of the striking plate (605). The striking plate (605) is made of elastic material.

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