Negative-pressure continuous batching and conveying device for powder conveying

Abstract

The utility model provides a negative pressure continuous batching and conveying device for powder conveying, and relates to the field of powder conveying, the negative pressure continuous batching and conveying device for powder conveying comprises a transfer bin with an internal hollow structure, and the inner side of the transfer bin is fixedly connected with a longitudinally arranged partition plate. In order to solve the problem that the feeding efficiency is low when a large batch of powder is supplied due to the fact that a bin needs to be used for transferring and discharging the powder and the discharging mode is low in discharging speed and cannot achieve effective continuous feeding, a partition plate is matched with an extraction pipe and an air pressure sensor which are independent on the two sides, and the feeding efficiency is high. Balanced distribution and accurate drainage of powder in the transfer bin are achieved; the bottom end baffle is driven by a hydraulic rod 3011, the sealing design of a rubber plug column is combined, the discharging state and the sealing state can be rapidly switched, air interference is reduced, dust overflowing is prevented, meanwhile, full-process automatic adjustment is achieved through a control terminal, and the stability and reliability of the feeding process are improved.

Description

Technical Field

[0001] This utility model belongs to the field of powder conveying, and specifically relates to a negative pressure continuous batching and conveying device for powder conveying. Background Technology

[0002] Currently, in the production of powders in industries such as chemicals, food, and pharmaceuticals, the conveying and batching of powders are crucial steps, and their efficiency and accuracy directly affect product quality and production costs. Existing powder conveying devices mainly employ positive pressure conveying, gravity flow, or mechanical transmission (such as screw conveyors), but in practical applications, they have revealed the following significant shortcomings.

[0003] However, existing powder conveying devices require the use of hoppers for intermediate unloading of powder when conveying powder. However, this unloading method is slow and cannot achieve effective continuous feeding, resulting in low feeding efficiency when supplying large quantities of powder.

[0004] Therefore, in view of the shortcomings of the above-mentioned solutions in actual production and implementation, modifications and improvements have been made. At the same time, in the spirit and concept of seeking excellence, with the assistance of professional knowledge and experience, and after much ingenuity and experimentation, this utility model was created. It provides a negative pressure continuous batching and conveying device for powder conveying, which solves the problem that existing powder conveying devices require the use of hoppers for intermediate material unloading when conveying powder. However, this unloading method has a low unloading speed and cannot achieve effective continuous feeding, resulting in low feeding efficiency when supplying large quantities of powder. Utility Model Content

[0005] This utility model proposes a negative pressure continuous batching and conveying device for powder conveying, which solves the problem that existing powder conveying devices require the use of hoppers for intermediate material unloading when conveying powder. However, this unloading method has a low unloading speed and cannot achieve effective continuous feeding, resulting in low feeding efficiency when supplying large quantities of powder.

[0006] The technical solution of this utility model is implemented as follows: a negative pressure continuous batching and conveying device for powder conveying includes a transfer chamber with an internal hollow structure, and a longitudinally arranged partition is fixedly connected to the inner side of the transfer chamber.

[0007] The upper and lower sides of the partition are respectively in contact with the transfer chamber and the discharge pipe. A hollow internal flow collector is fixedly connected to the top surface of the transfer chamber. A vacuum pump for evacuating air from inside the transfer chamber is fixedly connected to the top of the flow collector. Two extraction pipes are fixedly connected to the left and right sides of the outer periphery of the flow collector, respectively, and the two extraction pipes are located on the left and right sides of the partition.

[0008] In a preferred embodiment, the inner side of the transfer warehouse is provided with a material trough for buffering materials, and a discharge pipe is fixedly connected to the bottom of the transfer warehouse.

[0009] In a preferred embodiment, the feeding pipe is connected to the transfer chamber, and a control terminal with a touch screen is fixedly connected to the front end of the transfer chamber.

[0010] In a preferred embodiment, a pressure sensor is fixedly connected to the inner top of the transfer compartment. The pressure sensor is electrically connected to the control terminal, and there are two pressure sensors.

[0011] In a preferred embodiment, the two pressure sensors are arranged in parallel and located on the left and right sides of the partition, respectively, and a connecting bracket is fixedly connected to the rear side of the feed pipe.

[0012] In a preferred embodiment, the connecting bracket is provided in two places, and the two connecting brackets are arranged in parallel. Two side plates are fixedly connected in a straight line array on the top surface of the transverse component of the connecting bracket.

[0013] In a preferred embodiment, a hydraulic rod 3011 is mounted on the inner side of the side plate via a pivot. The hydraulic rod, the side plate, and the connecting bracket are all used to lift the bottom baffle.

[0014] In a preferred embodiment, a bottom baffle is hinged to the bottom opening of the feed pipe, and there are two bottom baffles arranged side by side.

[0015] In a preferred embodiment, each bottom baffle has two connecting plates fixedly connected in a straight line array on its bottom surface, and the connecting plates are connected to the output end of the hydraulic rod via a rotating shaft.

[0016] In a preferred embodiment, a rubber plug for inserting between the feed pipe and the partition is fixedly connected to the top surface of the bottom baffle.

[0017] After using the above technical solution, the beneficial effects of this utility model are:

[0018] 1. In this utility model, a negative pressure environment is created in the transfer chamber by a vacuum pump. The air pressure difference is used to enhance the flowability of the powder, which breaks through the speed limit of traditional gravity feeding and avoids the blockage problem caused by powder accumulation or moisture absorption. This significantly improves the continuous supply capacity of large batches of powder and solves the core defect of low feeding speed in the prior art.

[0019] 2. In this utility model, the balanced distribution and precise diversion of powder in the transfer chamber are achieved by using a partition in conjunction with independent extraction pipes on both sides and a pressure sensor; the bottom baffle is driven by a hydraulic rod and combined with the sealing design of the rubber plug, which can quickly switch between feeding and sealing states, reduce air interference and prevent dust from overflowing. At the same time, the control terminal realizes full-process automated adjustment, improving the stability and reliability of the feeding process. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0021] Figure 1 This is a front view of the sectional structure of the batching and conveying device of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall axial side view of the batching and conveying device of this utility model;

[0023] Figure 3 This is a top view of the material feeding and conveying device of this utility model;

[0024] Figure 4 This is a side view of the feeding and conveying device of this utility model.

[0025] Figure 5 This is a left-side structural schematic diagram of the batching and conveying device of this utility model;

[0026] Figure 6 This is a front view schematic diagram of the sectional structure of the batching and conveying device of this utility model;

[0027] In the diagram, 1. Transfer bin; 101. Feed pipe; 1011. Partition plate; 1012. Material trough; 1013. Control terminal; 1014. Pressure sensor; 1015. Feed pipe; 1016. Control valve A; 2. Manifold; 201. Vacuum pump; 2011. Extraction pipe; 2012. Control valve B; 3. Connecting bracket; 301. Side plate; 3011. Hydraulic rod; 3012. Bottom baffle; 3013. Connecting plate; 3014. Rubber plunger. Detailed Implementation

[0028] 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.

[0029] like Figures 1-6 As shown, a negative pressure continuous batching and conveying device for powder conveying includes: a transfer chamber 1 with an internal hollow structure, and a longitudinally arranged partition 1011 fixedly connected to the inner side of the transfer chamber 1;

[0030] The upper and lower sides of the partition 1011 are respectively connected to the transfer chamber 1 and the discharge pipe 101. The top surface of the transfer chamber 1 is fixedly connected to the internal hollow structure of the collector seat 2. The top of the collector seat 2 is fixedly connected to the vacuum pump 201 for drawing air from the inside of the transfer chamber 1. The left and right sides of the outer periphery of the collector seat 2 are fixedly connected to two extraction pipes 2011 facing each other. The two extraction pipes 2011 are located on the left and right sides of the partition 1011 respectively.

[0031] The transfer warehouse 1 has a material trough 1012 for buffering materials on its inner side. The bottom of the transfer warehouse 1 is fixedly connected to a discharge pipe 101, which is connected to the transfer warehouse 1. A control terminal 1013 with a touch screen is fixedly connected to the front surface of the transfer warehouse 1.

[0032] Among them, a pressure sensor 1014 is fixedly connected to the top inner side of the transfer chamber 1. The pressure sensor 1014 is electrically connected to the control terminal 1013. There are two pressure sensors 1014, which are arranged in parallel and located on the left and right sides of the partition 1011 respectively. A connecting bracket 3 is fixedly connected to the rear side of the discharge pipe 101.

[0033] There are two connecting brackets 3, which are arranged in parallel. Two side plates 301 are fixedly connected in a straight array on the top surface of the transverse component of the connecting bracket 3. A hydraulic rod 3011 is installed on the inner side of the side plate 301 through a rotating shaft. The hydraulic rod 3011, the side plate 301, and the connecting bracket 3 are all used to lift the bottom baffle 3012.

[0034] Among them, a bottom baffle 3012 is hinged to the bottom opening of the feed tube 101. There are two bottom baffles 3012, which are arranged side by side. Two connecting plates 3013 are fixedly connected in a straight array on the bottom surface of each bottom baffle 3012. The connecting plates 3013 are connected to the output end of the hydraulic rod 3011 through a rotating shaft. A rubber plug 3014 for inserting between the feed tube 101 and the partition 1011 is fixedly connected to the top surface of the bottom baffle 3012.

[0035] During use, before the device is started, the bottom baffle 3012 is kept closed by the hydraulic rod 3011, and the rubber plug 3014 is tightly inserted into the gap between the feed pipe 101 and the partition 1011 to form a sealing structure. The control terminal 1013 triggers the vacuum pump 201 to start, and draws air from the transfer chamber 1 through the collector 2 and the extraction pipes 2011 on the left and right sides, forming negative pressure areas on both sides of the partition 1011. At this time, the air pressure sensor 1014 monitors the air pressure values ​​on the left and right sides of the transfer chamber 1 in real time and feeds the data back to the control terminal 1013 to ensure that the negative pressure on both sides is balanced, providing a power basis for the flow of powder.

[0036] The powder enters the transfer chamber 1 through the feed pipe 1015 and is stored in the material troughs 1012 on both sides of the partition 1011. Since the partition 1011 is fixed longitudinally to the inside of the transfer chamber 1 and its upper and lower ends abut against the top of the transfer chamber 1 and the feed pipe 101 respectively, the powder is divided into left and right parts. The arc-shaped structure of the material trough 1012 guides the powder to accumulate naturally. At the same time, the negative pressure environment makes the powder stick tightly to the inner wall of the transfer chamber 1, reducing dust suspension.

[0037] When the control terminal 1013 receives the feeding command, the hydraulic rod 3011 begins to retract, driving the bottom baffle 3012 to flip downwards through the side plate 301 and the connecting plate 3013. The rubber plunger 3014 simultaneously disengages from the gap between the feeding pipe 101 and the partition 1011, opening the feeding channel. At this time, the negative pressure in the transfer chamber 1 is transmitted to the inside of the feeding pipe 101 through the gap between the partition 1011 and the feeding pipe 101. Under the combined action of the difference between the negative pressure in the air pressure transfer chamber 1 and the external atmospheric pressure and gravity, the powder falls from the trough 1012 through the gap of the partition 1011 into the feeding pipe 101 and moves quickly to the bottom.

[0038] During the feeding process, the control terminal 1013 adjusts the negative pressure intensity in the transfer chamber 1 in real time by adjusting the power of the vacuum pump 201 according to the preset feeding speed. At the same time, the air pressure sensors 1014 on both sides continuously monitor the negative pressure fluctuations. If the powder storage on one side is insufficient, resulting in abnormal air pressure, the control terminal 1013 automatically adjusts the opening of the control valve B2012 of the corresponding extraction pipe 2011 to balance the airflow on both sides. In addition, the feeding amount of the feed pipe 1015 is adjusted by the control valve A1016 to achieve dynamic balance of "feeding-buffering-feeding".

[0039] When the preset feeding amount is reached or the feeding needs to be paused, the control terminal 1013 triggers the hydraulic rod 3011 to extend, the bottom baffle 3012 flips upward to reset, and the rubber plunger 3014 re-inserts into the gap between the feeding pipe 101 and the partition 1011, blocking the flow of powder and sealing the feeding port. At this time, the vacuum pump 201 maintains low power operation to maintain negative pressure in the transfer chamber 1, preparing for the next feeding.

[0040] Dual-path independent negative pressure control: The partition 1011 divides the transfer chamber 1 into left and right parts. The negative pressure of the extraction pipes 2011 on both sides can be adjusted by independent control valves B2012, which is suitable for simultaneously conveying two powders with different properties.

[0041] Hydraulic and sealing collaborative design: The bottom baffle 3012 can be quickly opened and closed through the hydraulic rod 3011. The flexible sealing structure of the rubber plug 3014 adapts to the small gap between the feed pipe 101 and the partition 1011. The control terminal 1013 integrates sensor feedback and equipment linkage functions, automatically matching the conveying parameters of different powders and reducing human error.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A negative pressure continuous batching and conveying device for powder conveying, comprising a transfer hopper (1) with an internal hollow structure, characterized in that, The inner side of the transit warehouse (1) is fixedly connected with a longitudinally arranged partition (1011); The upper and lower sides of the partition (1011) are respectively in contact with the transfer chamber (1) and the discharge pipe (101). The top surface of the transfer chamber (1) is fixedly connected to the internal hollow structure of the collector seat (2). The top of the collector seat (2) is fixedly connected to the vacuum pump (201) for drawing air from the inside of the transfer chamber (1). The left and right sides of the outer periphery of the collector seat (2) are fixedly connected to two extraction pipes (2011) facing each other. The two extraction pipes (2011) are located on the left and right sides of the partition (1011) respectively.

2. The negative pressure continuous batching and conveying device for powder conveying according to claim 1, characterized in that, The transfer warehouse (1) has a material trough (1012) for buffering materials on its inner side, and a discharge pipe (101) is fixedly connected to the bottom of the transfer warehouse (1).

3. The negative pressure continuous batching and conveying device for powder conveying according to claim 2, characterized in that, The feeding pipe (101) is connected to the transfer chamber (1), and a control terminal (1013) with a touch screen is fixedly connected to the front end of the transfer chamber (1).

4. The negative pressure continuous batching and conveying device for powder conveying according to claim 1, characterized in that, A pressure sensor (1014) is fixedly connected to the top inner side of the transfer compartment (1). The pressure sensor (1014) is electrically connected to the control terminal (1013), and there are two pressure sensors (1014).

5. A negative pressure continuous batching and conveying device for powder conveying according to claim 4, characterized in that, The two pressure sensors (1014) are arranged in parallel and are located on the left and right sides of the partition (1011) respectively. A connecting bracket (3) is fixedly connected to the rear side of the feed pipe (101).

6. A negative pressure continuous batching and conveying device for powder conveying according to claim 5, characterized in that, The connecting bracket (3) is provided in two places, and the two connecting brackets (3) are arranged in parallel. The top surface of the transverse component in the connecting bracket (3) is fixedly connected to two side plate members (301) in a straight line array.

7. A negative pressure continuous batching and conveying device for powder conveying according to claim 6, characterized in that, A hydraulic rod (3011) is mounted on the inner side of the side plate (301) via a pivot. The hydraulic rod (3011), the side plate (301), and the connecting bracket (3) are all used to lift the bottom baffle (3012).

8. A negative pressure continuous batching and conveying device for powder conveying according to claim 1, characterized in that, The bottom opening of the feed pipe (101) is hinged with a bottom baffle (3012), and there are two bottom baffles (3012), which are arranged side by side.

9. A negative pressure continuous batching and conveying device for powder conveying according to claim 8, characterized in that, Each bottom baffle (3012) has two connecting plates (3013) fixedly connected in a straight array on its bottom surface. The connecting plates (3013) are connected to the output end of the hydraulic rod (3011) via a rotating shaft.

10. A negative pressure continuous batching and conveying device for powder conveying according to claim 9, characterized in that, A rubber plug (3014) for inserting between the feed tube (101) and the partition (1011) is fixedly connected to the top surface of the bottom baffle (3012).

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