Powder conveying pump

Abstract

A powder conveying pump relates to the technical field of conveying equipment and comprises a pump body, an air locker, a material guiding device and a blowing-away device. The pump body comprises a feed port, an air inlet and a discharge port; the air locking device is in driving connection with the air locking power piece, and the bottom end of the air locking device communicates with the feeding opening; the material guiding device is installed between the air locking device and the feeding port and comprises an obliquely-arranged material guiding plate, and the bottom end of the material guiding plate is obliquely arranged on the side close to the discharging port. The blowing-away device comprises an air nozzle and a pneumatic vibrator, the air nozzle and the pneumatic vibrator are both installed on the material guiding plate and both communicated with the air inlet through an air blowing pipe, and the air nozzle is obliquely arranged. The powder can be blown away and disordered, the powder is prevented from being accumulated on the material guide plate, the powder uniformity is improved, the pumping continuity is guaranteed, and the pumping efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of conveying equipment technology, and in particular to a powder conveying pump. Background Technology

[0002] A powder transfer pump is a device specifically designed for conveying solid materials such as powders and granules. Unlike liquid transfer pumps, it is designed to handle media with poor flowability, such as flour, cement, and chemical powders. This type of pump ensures that these materials can be efficiently and stably transported from one place to another during industrial production processes, and is suitable for various industries such as food processing, pharmaceuticals, chemicals, and building materials.

[0003] Powder conveying pumps typically operate on the basis of mechanical propulsion or pneumatic transfer. For example, screw conveyor pumps use rotating screw blades to propel materials along pipelines; while pneumatic conveying systems use the pressure difference of gas (usually air) to move materials. The selection of the appropriate type of powder conveying pump depends primarily on the specific application scenario, material characteristics, and requirements for conveying efficiency and cleanliness.

[0004] Pneumatic conveying, also known as airflow conveying, utilizes the energy of airflow to transport granular materials along the airflow direction within a closed pipeline. It can transport materials horizontally, vertically, or at an incline. However, existing pneumatic conveying pumps still have some shortcomings in their use:

[0005] Existing powder conveying pumps use a guiding device between the pump inlet and the airlock to ensure accurate powder delivery into the pump body and timely ejection. This guiding device features an inclined guide plate. However, when guiding powder, the existing guide plate is prone to powder accumulation due to variations in powder distribution or moisture content. This affects the uniform entry of powder into the pump body, impacting pumping continuity, causing blockages in subsequent pipelines, requiring manual shutdown for cleaning, and ultimately reducing pumping efficiency. Utility Model Content

[0006] In view of this, the technical problem to be solved by this utility model is to provide a powder conveying pump that can blow and disperse powder to prevent it from accumulating on the guide plate, improve the uniformity of powder, ensure continuous pumping, and improve pumping efficiency.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0008] Powder conveying pump, including pump body, air lock, material guiding device and blowing device;

[0009] The pump body includes a feed inlet, an air inlet, and a discharge outlet;

[0010] The airlock is driven and connected to the airlock power component, and the bottom end of the airlock is connected to the feed port;

[0011] The material guiding device is installed between the airlock and the feed inlet. The material guiding device includes an inclined material guiding plate, and the bottom end of the material guiding plate is inclined towards the side close to the discharge outlet.

[0012] The blowing device includes at least one air nozzle and at least one pneumatic vibrator. Both the air nozzle and the pneumatic vibrator are mounted on the guide plate. Both the air nozzle and the pneumatic vibrator are connected to the air inlet through an air blowing pipe. The air nozzle is inclined and is used to blow air into the guide device with its blowing direction inclined towards the discharge port. Vertically, the pneumatic vibrator is located below the air nozzle.

[0013] Preferably, the material guiding device includes a blowing plate, which is integrally formed with the material guiding plate, and an air blowing chamber is formed between the blowing plate and the material guiding plate, with the air outlet of the air nozzle located inside the air blowing chamber.

[0014] Preferably, the blowing plate and the guide plate are inclined in the same direction; the angle between the blowing plate and the horizontal plane is defined as a, and the angle between the guide plate and the horizontal plane is defined as b, where a < b.

[0015] Preferably, the number of air nozzles is three, the three air nozzles are connected in series, and the three air nozzles are equidistantly arranged along the width direction of the material guiding device; the number of pneumatic vibrators is two.

[0016] Preferably, the air inlet is connected to the air inlet pipe, and both the air nozzle and the pneumatic vibrator are connected to the air inlet pipe through the air blowing pipe.

[0017] Preferably, an air valve is installed on the air blowing pipe.

[0018] Preferably, an adjustable injector is installed between the air inlet and the air inlet pipe.

[0019] Preferably, the pump body is provided with an annular nozzle.

[0020] Preferably, the discharge port is connected to the discharge pipe via a venturi tube.

[0021] After adopting the above technical solution, the beneficial effects of this utility model are:

[0022] This application includes a pump body, an air lock, a material guiding device, and a dispersing device; wherein, the pump body includes a feed inlet, an air inlet, and a discharge outlet; the air lock is driven and connected to the air lock power component, and the bottom end of the air lock is connected to the feed inlet; external powder, such as powder contained in a silo, enters the interior of the pump body through the air lock and is pumped out through the discharge outlet.

[0023] The material guiding device is installed between the airlock and the feed inlet. The device includes an inclined guide plate, with its bottom end angled towards the discharge outlet. This device guides the powder, ensuring it falls as close as possible to the discharge outlet within the pump body for timely pumping and to prevent accumulation. The dispersing device includes an air nozzle and a pneumatic vibrator, both mounted on the guide plate and connected to the air inlet via air pipes. The air nozzle is angled and blows air into the guiding device, with the blowing direction angled towards the discharge outlet. Vertically, the pneumatic vibrator is positioned below the air nozzle.

[0024] During the process of powder sliding through the guide plate into the pump body, it is prone to accumulation on the guide plate due to various reasons, including reduced falling speed due to obstruction by the guide plate, uneven feed distribution due to obstruction by the air lock, or differences in the dryness and wetness of different powders. Powder accumulation can affect the normal falling of powder, resulting in situations where no powder enters the pump body per unit time or a sudden influx of powder. Both of these situations will affect normal pumping. Therefore, installing air nozzles and pneumatic vibrators on the guide plate allows for the air nozzles to disperse the powder falling before or above the guide plate, preventing accumulation. Simultaneously, the pneumatic vibrator further prevents powder accumulation by vibrating the guide plate. This improves the uniformity of powder entering the pump body, ensures continuous pumping, increases pumping efficiency, and reduces maintenance frequency. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the structure of the powder conveying pump according to an embodiment of the present invention;

[0027] Figure 2 yes Figure 1 Schematic diagram of the central feeding device;

[0028] Figure 3 yes Figure 2 A sectional view;

[0029] In the picture:

[0030] 1. Pump body;

[0031] 2. Airlock; 21. Airlock power components;

[0032] 3. Material guiding device; 31. Material guiding plate; 32. Material blowing plate;

[0033] 4. Blowing device; 41. Air nozzle; 42. Pneumatic vibrator; 43. Air blowing pipe; 44. Air valve;

[0034] 5. Air intake pipe;

[0035] 6. Adjustable injector;

[0036] 7. Ring nozzle;

[0037] 8. Venturi tube;

[0038] 9. Discharge pipe;

[0039] a is the angle between the blowing plate and the horizontal plane, and b is the angle between the guide plate and the horizontal plane. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0041] like Figures 1 to 3 As shown in the figure, this utility model includes a pump body 1, an air lock 2, a material guiding device 3, and a blowing device 4; wherein, the pump body 1 includes a feed inlet, an air inlet, and a discharge outlet; the air lock 2 is driven and connected to the air-locking power component 21, and the bottom end of the air lock 2 is connected to the feed inlet; external powder, such as powder contained in a silo, enters the interior of the pump body 1 through the air lock 2 and is pumped out through the discharge outlet.

[0042] The material guiding device 3 is installed between the air lock 2 and the feed inlet. The material guiding device 3 includes an inclined material guiding plate 31, with the bottom end of the material guiding plate 31 inclined towards the side close to the discharge port. The material guiding device 3 is used to guide the powder so that it falls as close as possible to the discharge port inside the pump body 1, so that it can be pumped out in time and prevent accumulation in the pump body.

[0043] The blowing device 4 includes at least one air nozzle 41 and at least one pneumatic vibrator 42. Both the air nozzle 41 and the pneumatic vibrator 42 are mounted on the guide plate 31. Both the air nozzle 41 and the pneumatic vibrator 42 are connected to the air inlet through the air blowing pipe 43. The air nozzle 41 is inclined and is used to blow air into the guide device 3, and its blowing direction is inclined towards the outlet. Vertically, the pneumatic vibrator 42 is located below the air nozzle 41.

[0044] During the process of powder sliding through the guide plate 31 into the pump body 1, it is prone to accumulation on the guide plate 31 due to various reasons, including reduced falling speed due to obstruction by the guide plate 31, uneven feeding distribution due to obstruction by the air lock 2, or differences in the dryness and wetness of different powders. When powder accumulates, it can affect the normal falling of powder, resulting in situations where no powder enters the pump body 1 per unit time or a sudden influx of powder into the pump body 1. Both of these situations will affect normal pumping. Therefore, air nozzles 41 and pneumatic vibrators 42 are installed on the guide plate 31. The air nozzles 41 can blow air to disperse the powder falling before or above the guide plate 31, preventing it from accumulating on the guide plate 31. At the same time, the pneumatic vibrator 42 vibrates the guide plate 31, further preventing powder accumulation. This improves the uniformity of powder entering the pump body 1, ensures the continuity of pumping, increases pumping efficiency, and reduces maintenance frequency.

[0045] Preferably, the material guiding device 3 includes a blowing plate 32, which is integrally formed with the material guiding plate 31. An air blowing chamber is formed between the blowing plate 32 and the material guiding plate 31, and the air outlet of the air nozzle 41 is located in the air blowing chamber.

[0046] The blowing plate 32 and the guide plate 31 are inclined in the same direction; the angle between the blowing plate 32 and the horizontal plane is defined as 'a', and the angle between the guide plate 31 and the horizontal plane is defined as 'b', where 'a' < 'b'. The angle of the blowing plate 32 is smaller than the angle of the guide plate 31, so that when blowing air onto the powder, it can first achieve sufficient dispersion, instead of rapidly blowing the powder into the pump body 1. Only after sufficient dispersion can the powder fall into the pump body 1, ensuring the dispersion requirement.

[0047] Preferably, there are three air nozzles 41 connected in series and equidistantly arranged along the width direction of the material guide device 3; and two pneumatic vibrators 42.

[0048] The air inlet is connected to the air inlet pipe 5, and both the air nozzle 41 and the pneumatic vibrator 42 are connected to the air inlet pipe 5 via the air blowing pipe 43. External high-pressure gas enters the pump body 1 through the air inlet pipe 5. During the process of the gas entering the pump body 1, some of the gas enters the air nozzle 41 and the pneumatic vibrator 42 through the air blowing pipe 43. The air nozzle 41 blows and disperses the powder, and drives the pneumatic vibrator 42 to vibrate. Preferably, the external high-pressure gas is generated by a Roots blower. An air valve 44 is installed on the air blowing pipe 43. The air valve 44 can be configured as one valve, controlling all the air nozzles 41 and pneumatic vibrators 42, or it can be configured as two valves, one controlling all the air nozzles 41 and the other controlling all the pneumatic vibrators 42. This can be changed by the operator according to the site conditions.

[0049] An adjustable injector 6 is installed between the air inlet and the air inlet pipe 5. By providing the adjustable injector 6, the air pressure can be adjusted in real time when conveying different powders, which facilitates powder conveying and saves energy.

[0050] The pump body 1 is equipped with an annular nozzle 7; the discharge port is connected to the discharge pipe 9 through a venturi tube 8.

[0051] When the powder conveying pump is in use, high-pressure gas from the outside is first introduced through the air inlet pipe 5. The powder falls onto the guide plate 31 through the air lock 2, either sliding down or falling directly into the pump body 1. After being pumped by the pump body 1 for a period of time, the operator opens the air valve 44 and leads some gas through the air blowing pipe 43 to the air nozzle 41 and the pneumatic vibrator 42 to blow and disperse the falling powder and vibrate the guide plate 31, so that it can fall into the pump body 1 evenly and in a timely manner.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A powder conveying pump, characterized in that, Includes pump body, air lock, material guiding device and blowing device; The pump body includes a feed inlet, an air inlet, and a discharge outlet; The airlock is driven and connected to the airlock power component, and the bottom end of the airlock is connected to the feed port; The material guiding device is installed between the airlock and the feed inlet. The material guiding device includes an inclined material guiding plate, and the bottom end of the material guiding plate is inclined towards the side close to the discharge outlet. The blowing device includes at least one air nozzle and at least one pneumatic vibrator. Both the air nozzle and the pneumatic vibrator are mounted on the guide plate. Both the air nozzle and the pneumatic vibrator are connected to the air inlet through an air blowing pipe. The air nozzle is inclined and is used to blow air into the guide device with its blowing direction inclined towards the discharge port. Vertically, the pneumatic vibrator is located below the air nozzle.

2. The powder conveying pump as described in claim 1, characterized in that, The material guiding device includes a blowing plate, which is integrally formed with the material guiding plate. An air blowing chamber is formed between the blowing plate and the material guiding plate, and the air outlet of the air nozzle is located in the air blowing chamber.

3. The powder conveying pump as described in claim 2, characterized in that, The blowing plate and the guide plate are inclined in the same direction; the angle between the blowing plate and the horizontal plane is defined as a, and the angle between the guide plate and the horizontal plane is defined as b, where a < b.

4. The powder conveying pump as described in claim 1, characterized in that, The number of air nozzles is three, which are connected in series and are equidistant from each other along the width of the material guiding device; the number of pneumatic vibrators is two.

5. The powder conveying pump as described in claim 1, characterized in that, The air inlet is connected to the air inlet pipe, and the air nozzle and the pneumatic vibrator are both connected to the air inlet pipe through the air blowing pipe.

6. The powder conveying pump as described in claim 5, characterized in that, An air valve is installed on the air blowing pipe.

7. The powder conveying pump as described in claim 5, characterized in that, An adjustable injector is installed between the air inlet and the air inlet pipe.

8. The powder conveying pump as described in claim 1, characterized in that, The pump body is equipped with an annular nozzle.

9. The powder conveying pump as described in claim 1, characterized in that, The discharge port is connected to the discharge pipe via a venturi tube.

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