A press-in powder supply device

Abstract

The utility model discloses a kind of press-in powder feeding devices, the feeder body is equipped with dynamic valve, bin cover, hasp, supplementary feeder air inlet valve, feeder air inlet valve and feeding valve, the feeder body is composed of supplementary feeder and feeder, the supplementary feeder is located above feeder, the dynamic valve is installed between the bottom of supplementary feeder and the top of feeder, to control the communication or isolation of supplementary feeder and feeder;The bin cover is connected with the top of supplementary feeder by hinge, the hasp is arranged between bin cover and the lateral wall of supplementary feeder, for locking bin cover in the top of supplementary feeder to realize sealing.The utility model is through the split type structure design of supplementary feeder, feeder and dynamic valve, solve the problem that traditional powder feeding device feeding and supplementary material cannot be synchronized;Adapt to a variety of working conditions, and conveying adaptability is strong;Prevent material blockage, guarantee feeding stability.

Description

Technical Field

[0001] This utility model relates to the field of powder feeding, specifically a press-feed powder feeding device. Background Technology

[0002] In industrial production, a stable and efficient supply of powdered materials is crucial for the smooth operation of many processes, such as environmental treatment, chemical reactions, and building material processing. Currently, powder feeding technologies are mainly divided into two categories: mechanical conveying and pneumatic conveying. The specific technical route selection needs to be determined comprehensively based on material characteristics, such as particle size, fragility, flowability, conveying distance, and the flow rate requirements of the actual scenario. The technical characteristics and limitations of the two types of conveying methods are as follows:

[0003] 1. Mechanical conveying;

[0004] Screw conveyors: They use rotating blades to propel materials along a trough and have good sealing properties, but the conveying distance is limited, usually not exceeding 30 meters, and are only suitable for short-distance material supply.

[0005] Belt conveyors: They transport materials by driving a conveyor belt through a drive drum, enabling long-distance and high-flow material supply. However, they occupy a large area and have high requirements for installation space.

[0006] 2. Pneumatic conveying;

[0007] Positive pressure pneumatic conveying: This method uses an air compressor to generate positive pressure airflow to propel materials. The conveying distance can reach hundreds of meters. It is highly adaptable and can meet the needs of large-volume material supply, but its energy consumption is relatively high.

[0008] Negative pressure pneumatic conveying: A negative pressure environment is created by a vacuum pump to suck up materials. It is suitable for multi-point material collection and has good sealing performance, but the conveying capacity is small and it is difficult to adapt to high flow rate scenarios.

[0009] Dilute phase conveying: High airflow velocity and low solid-to-gas ratio, the material moves in a suspended state, suitable for materials with small particle size and low breakage requirements.

[0010] Dense phase conveying: Low airflow velocity and high solid-to-gas ratio. Materials move in the form of mass flow or plunger flow, resulting in low energy consumption and reduced material breakage. It is suitable for fragile powders.

[0011] In summary, existing powder feeding technologies have limitations such as short distances or large footprints. While pneumatic conveying can cover more scenarios, traditional pneumatic conveying devices generally suffer from the problem of asynchronous feeding and replenishment. They require the machine to be stopped before the silo can be opened for replenishment, resulting in feeding interruptions. This makes it difficult to meet the high requirements of continuous production for the stability and continuity of feeding. Therefore, there is an urgent need for a powder feeding device that can achieve simultaneous feeding and replenishment and has strong adaptability. Utility Model Content

[0012] In view of the problems in the related technologies, this utility model proposes a press-in powder feeding device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0013] Therefore, the specific technical solution adopted by this utility model is as follows:

[0014] A forced-feed powder feeding device includes a hopper body. The hopper body is equipped with a pneumatic valve, a hopper cover, a latch, a replenishment hopper inlet valve, a supply hopper inlet valve, and a supply valve. The hopper body consists of a replenishment hopper and a supply hopper. The replenishment hopper is located above the supply hopper. The pneumatic valve is installed between the bottom of the replenishment hopper and the top of the supply hopper to control the connection or isolation between the two hoppers. The hopper cover is connected to the top of the replenishment hopper via a hinge. The latch is located between the hopper cover and the side wall of the replenishment hopper to lock the hopper cover to the top of the replenishment hopper for sealing.

[0015] As a further embodiment of this utility model, the replenishment hopper air inlet valve is installed on the side wall of the replenishment hopper for introducing compressed gas into the replenishment hopper; the feeding hopper air inlet valve is installed on the side wall of the feeding hopper for introducing compressed gas into the feeding hopper to form a positive pressure environment; the feeding valve is installed at the bottom of the feeding hopper for connecting to an external feeding pipe and controlling the output of powder material in the feeding hopper; the compressed gas provided by the air compressor makes the pressure in the feeding hopper greater than atmospheric pressure, and the positive pressure airflow pushes the powder material in the feeding hopper through the feeding valve into the feeding pipe; and by controlling the opening and closing of the pneumatic valve and the on / off of the replenishment hopper air inlet valve, it is possible to replenish the replenishment hopper while the feeding hopper is continuously supplying material, thus achieving simultaneous supply and replenishment.

[0016] As a further embodiment of this utility model, it also includes a pneumatic vibrator, which is installed on the outer wall of the feeding hopper and is used to generate vibration after being connected to compressed gas, so as to promote the powder material in the replenishment hopper and the feeding hopper to flow and gather towards the bottom of the hopper, and prevent material blockage or the formation of voids.

[0017] As a further embodiment of this utility model, it also includes a pneumatic valve inlet valve, which is connected to the pneumatic valve and is used to introduce compressed gas into the pneumatic valve to drive the pneumatic valve to open; and the pressure of the compressed gas introduced into the pneumatic valve inlet valve is greater than or equal to the pressure of the compressed gas introduced into the feed hopper inlet valve.

[0018] As a further embodiment of this utility model, both the replenishment bin air inlet valve and the supply bin air inlet valve are adjustable valves used to control the flow rate of compressed gas entering the replenishment bin and the supply bin, thereby regulating the pressure inside the bin.

[0019] As a further embodiment of this invention, the vibration frequency of the pneumatic vibrator can be controlled by adjusting the pressure of the compressed gas introduced into it.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. By adopting a separate structural design for the replenishment hopper, the feeding hopper, and the pneumatic valve, this device solves the problem of asynchronous feeding and replenishment in traditional powder feeding devices. Traditional devices require shutdown before the hopper can be opened for replenishment, leading to feeding interruptions and reduced efficiency. However, this device, while continuously outputting material from the feeding hopper, can isolate the replenishment hopper and the feeding hopper by closing the pneumatic valve, open the hopper cover to complete replenishment, and then restore the pneumatic valve connection to resume material replenishment. The entire process requires no shutdown, significantly improving feeding continuity. It is particularly suitable for industrial scenarios with high feeding efficiency requirements, such as continuous production processes in environmental protection and chemical industries.

[0022] 2. Adaptable to various working conditions and highly adaptable to conveying: This device is designed based on the principle of positive pressure pneumatic conveying. It uses compressed gas provided by an air compressor to create a positive pressure environment to drive the material flow. Compared with traditional mechanical conveying, such as screw conveyors which are only suitable for short distances within 30 meters and belt conveyors which have a large footprint, this device can meet the needs of long-distance and high-flow material supply. At the same time, the thrust of the positive pressure airflow can adapt to powder materials of different particle sizes and flowability, such as easily flowing or slightly sticky powders. There is no need to make major modifications to the equipment for specific materials, which broadens the application range of the device.

[0023] 3. To prevent material blockage and ensure stable feeding, the pneumatic vibrator installed on the outside of the feeding hopper can generate continuous vibration after compressed gas is introduced. This can promote the flow and accumulation of powder materials in the replenishment hopper and feeding hopper to the bottom of the hopper, effectively avoiding material bridging and blockage or voids in the hopper due to accumulation. This design reduces the frequency of equipment failure, reduces the maintenance cost of manual cleaning of blockages, and ensures a stable and uniform feeding process.

[0024] 4. Excellent sealing performance, meeting environmental protection requirements. The top cover of the replenishment hopper is connected by a hinge and locked with a snap fastener, achieving a seal when closed. Simultaneously, the pneumatic valve tightly isolates the replenishment hopper from the supply hopper when not replenishing, preventing dust leakage caused by positive pressure airflow in the supply hopper. This sealing design effectively reduces the escape of powder materials during supply and replenishment, lowering dust pollution to the working environment and meeting the application requirements of the environmental protection field. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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.

[0026] Figure 1This is a front view of a press-feed powder feeding device according to an embodiment of the present utility model;

[0027] Figure 2 This is a perspective view of a press-fit powder feeding device according to an embodiment of the present utility model;

[0028] In the picture:

[0029] 1. Bin cover; 2. Fastener; 3. Replenishment bin; 4. Replenishment bin air inlet valve; 5. Feeding bin air inlet valve; 6. Pneumatic valve air inlet valve; 7. Pneumatic vibrator; 8. Feeding bin; 9. Feeding valve; 10. Pneumatic valve; 11. Bin body. Detailed Implementation

[0030] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0031] Please refer to the instruction manual appendix. Figure 1-2 According to an embodiment of the present invention, a pressurized powder feeding device includes a hopper body 11. The hopper body 11 is equipped with a pneumatic valve 10, a hopper cover 1, a latch 2, a replenishment hopper air inlet valve 4, a supply hopper air inlet valve 5, and a supply valve 9. The hopper body 11 is composed of a replenishment hopper 3 and a supply hopper 8. The replenishment hopper 3 is located above the supply hopper 8. The pneumatic valve 10 is installed between the bottom of the replenishment hopper 3 and the top of the supply hopper 8 to control the connection or isolation between the replenishment hopper 3 and the supply hopper 8. The hopper cover 1 is connected to the top of the replenishment hopper 3 by a hinge. The latch 2 is disposed between the hopper cover 1 and the side wall of the replenishment hopper 3 to lock the hopper cover 1 to the top of the replenishment hopper 3 to achieve a seal.

[0032] The replenishment hopper inlet valve 4 is installed on the side wall of the replenishment hopper 3 to introduce compressed gas into the replenishment hopper 3; the feeding hopper inlet valve 5 is installed on the side wall of the feeding hopper 8 to introduce compressed gas into the feeding hopper 8 to create a positive pressure environment; the feeding valve 9 is installed at the bottom of the feeding hopper 8 to connect to the external feeding pipe and control the output of powder material in the feeding hopper; the compressed gas provided by the air compressor makes the pressure in the feeding hopper 8 greater than atmospheric pressure, and the positive pressure airflow pushes the powder material in the feeding hopper 8 into the feeding pipe through the feeding valve 9; and by controlling the opening and closing of the pneumatic valve 10 and the on / off of the replenishment hopper 3 inlet valve, it is possible to replenish the replenishment hopper 3 while the feeding hopper 8 is continuously feeding, thus realizing simultaneous feeding and replenishment.

[0033] It also includes a pneumatic vibrator 7, which is installed on the outer wall of the feeding hopper 8. It is used to generate vibration after being connected to compressed gas, so as to cause the powder material in the replenishment hopper 3 and the feeding hopper 8 to flow and gather towards the bottom of the hopper, preventing material blockage or the formation of voids.

[0034] It also includes a pneumatic valve inlet valve 6, which is connected to the pneumatic valve 10 and is used to supply compressed gas to the pneumatic valve 10 to drive the pneumatic valve 10 to open; and the pressure of the compressed gas supplied to the pneumatic valve inlet valve 6 is greater than or equal to the pressure of the compressed gas supplied to the feed hopper inlet valve 10.

[0035] Both the replenishment bin air inlet valve 4 and the supply bin air inlet valve 5 are adjustable valves used to control the flow rate of compressed gas entering the replenishment bin 3 and the supply bin 8, thereby regulating the pressure inside the bins; the vibration frequency of the pneumatic vibrator 7 can be controlled by adjusting the pressure of the compressed gas entering it.

[0036] Device operation process:

[0037] Step 1: Preprocessing;

[0038] Compressed gas is introduced into the pneumatic vibrator 7 to cause it to vibrate, which promotes the material in the device to flow and gather towards the bottom of the silo, preventing accumulation and blockage.

[0039] Step 2: Normal material supply;

[0040] Connect the external feed pipe to the feed valve 9;

[0041] Open the air inlet valve 5 of the feeding hopper to introduce positive pressure airflow into the feeding hopper 8, so that the pressure inside the hopper is higher than atmospheric pressure;

[0042] When material needs to be supplied, the feeding valve 9 is opened, and the material enters the feeding pipe through the feeding valve 9 under the push of the positive pressure airflow, so as to achieve stable material supply.

[0043] Step 3: Synchronous material replenishment;

[0044] When the material supply in silo 8 is insufficient, replenish the material according to the following procedure:

[0045] Close the air inlet valve 4 of the replenishment bin and the air inlet valve 6 of the pneumatic valve to isolate the replenishment bin 3 from the supply bin 8;

[0046] Unlock latch 2, open cover 1, and add material to replenishment bin 3;

[0047] Close the lid 1 and lock the latch 2 to ensure a seal;

[0048] Open the air inlet valve 4 of the feeding hopper and the air inlet valve 6 of the pneumatic valve. Ensure that the gas pressure of the air inlet valve 6 of the pneumatic valve is greater than or equal to the gas pressure of the air inlet valve 5 of the feeding hopper to avoid positive pressure in the feeding hopper from hindering feeding.

[0049] When the pneumatic valve 10 is opened, the material in the replenishment bin 3 enters the feeding bin 8, completing the replenishment; the feeding bin 8 synchronously maintains the feeding, realizing continuous operation.

[0050] When this utility model continuously outputs materials through the feeding hopper, the replenishment hopper and the feeding hopper can be isolated by closing the pneumatic valve, the hopper cover can be opened to complete the replenishment, and the pneumatic valve can be restored after replenishment to achieve material replenishment. The entire process does not require machine shutdown, which significantly improves the continuity of material supply.

[0051] By using compressed gas provided by an air compressor to create a positive pressure environment to drive the material flow, the device can meet the needs of long-distance and high-flow-rate feeding. At the same time, the thrust of the positive pressure airflow can be adapted to powder materials of different particle sizes and flowability, such as easily flowing or slightly sticky powders. This eliminates the need for major equipment modifications for specific materials, thus broadening the application range of the device.

[0052] The configured pneumatic vibrator is installed on the outside of the feeding hopper. After compressed gas is introduced, it can generate continuous vibration, which can promote the powder material in the replenishment hopper and the feeding hopper to flow and gather to the bottom of the hopper. This effectively avoids the material from bridging and blocking due to accumulation or the formation of voids in the hopper. This design reduces the frequency of equipment failure, reduces the maintenance cost of manually cleaning blockages, and ensures a stable and uniform feeding process.

[0053] The top cover of the replenishment hopper is connected by a hinge and locked with a snap fastener, ensuring a seal when closed. Simultaneously, a pneumatic valve tightly isolates the replenishment hopper from the supply hopper when not replenishing, preventing dust leakage caused by positive pressure airflow in the supply hopper. This sealing design effectively reduces the escape of powder materials during supply and replenishment, minimizing dust pollution in the working environment and meeting the application requirements of the environmental protection field.

[0054] Both the replenishment hopper and the supply hopper inlet valves of this device support adjustable opening. The pressure within the replenishment and supply hoppers can be precisely adjusted by controlling the compressed gas flow rate. For example, during replenishment, the replenishment hopper inlet pressure can be increased to ensure rapid and complete material entry into the supply hopper. During supply, the supply hopper pressure can be adjusted according to the conveying distance and material characteristics to avoid excessive pressure leading to energy waste or insufficient pressure causing slow supply. Furthermore, the vibration frequency of the pneumatic vibrator can be controlled by adjusting the inlet pressure, allowing for optimized vibration intensity for materials with different flowability, further enhancing the device's operational flexibility.

[0055] 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 forced-feed powder feeding device, comprising a hopper body (11), characterized in that, The hopper body (11) is equipped with a pneumatic valve (10), a hopper cover (1), a latch (2), a replenishment hopper air inlet valve (4), a supply hopper air inlet valve (5), and a supply valve (9). The hopper body (11) consists of a replenishment hopper (3) and a supply hopper (8). The replenishment hopper (3) is located above the supply hopper (8). The pneumatic valve (10) is installed between the bottom of the replenishment hopper (3) and the top of the supply hopper (8) to control the connection or isolation between the replenishment hopper (3) and the supply hopper (8). The hopper cover (1) is connected to the top of the replenishment hopper (3) by a hinge. The latch (2) is set between the hopper cover (1) and the side wall of the replenishment hopper (3) to lock the hopper cover (1) to the top of the replenishment hopper (3) to achieve a seal.

2. The press-feed powder feeding device according to claim 1, characterized in that, The replenishment hopper air inlet valve (4) is installed on the side wall of the replenishment hopper (3) and is used to introduce compressed gas into the replenishment hopper (3); the feeding hopper air inlet valve (5) is installed on the side wall of the feeding hopper (8) and is used to introduce compressed gas into the feeding hopper (8) to form a positive pressure environment; the feeding valve (9) is installed at the bottom of the feeding hopper (8) and is used to connect to the external feeding pipe and control the output of powder material in the feeding hopper; the compressed gas provided by the air compressor makes the pressure in the feeding hopper (8) greater than the atmospheric pressure, and the positive pressure airflow pushes the powder material in the feeding hopper into the feeding pipe through the feeding valve (9); and by controlling the opening and closing of the pneumatic valve (10) and the opening and closing of the replenishment hopper air inlet valve (4), it is possible to replenish the replenishment hopper (3) while the feeding hopper (8) is continuously supplying material, so as to realize simultaneous feeding and replenishment.

3. The press-feed powder feeding device according to claim 2, characterized in that, It also includes a pneumatic vibrator (7), which is installed on the outer wall of the feeding silo (8) and is used to generate vibration after being connected to compressed gas, so as to cause the powder material in the replenishment silo (3) and the feeding silo (8) to flow and gather to the bottom of the silo, and prevent the material from being blocked or forming cavities.

4. The press-feed powder feeding device according to claim 3, characterized in that, It also includes a pneumatic valve inlet valve (6), which is connected to the pneumatic valve (10) and is used to supply compressed gas to the pneumatic valve (10) to drive the pneumatic valve to open; and the pressure of the compressed gas supplied to the pneumatic valve inlet valve (6) is greater than or equal to the pressure of the compressed gas supplied to the feed hopper inlet valve (5).

5. The press-feed powder feeding device according to claim 4, characterized in that, The air inlet valve (4) of the replenishment bin and the air inlet valve (5) of the supply bin are both adjustable valves used to control the flow rate of compressed gas entering the replenishment bin (3) and the supply bin (8), thereby regulating the pressure inside the bin.

6. The press-feed powder feeding device according to claim 3, characterized in that, The vibration frequency of the pneumatic vibrator (7) can be controlled by adjusting the pressure of the compressed gas introduced into it.

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