Concentrated-phase pneumatic conveying device with two-stage pressurizing structure

Abstract

The utility model provides a concentrated-phase pneumatic conveying device with a two-stage pressurizing structure, which relates to the field of pneumatic conveying equipment, comprises a transfer tank with an internal hollow structure, and solves the problem that when the conventional concentrated-phase pneumatic conveying device is used for conveying high-viscosity and high-density materials or for long-distance conveying, the transfer tank is difficult to transfer. In order to solve the problems of conveying interruption, material deposition and the like caused by insufficient pressure of a single pressurizing structure in the prior art, a two-stage pressurizing system is formed by primarily pressurizing materials in a transfer tank through a pressurizing pump and secondarily pressurizing airflow through a pulse pressurizing structure composed of a servo motor, a driving gear, a tooth row, a piston plate and the like. The whole conveying pressure is remarkably improved through two-stage pressurization, the problems of conveying interruption and material deposition caused by insufficient pressure during long-distance conveying of high-viscosity and large-density materials are effectively solved, and the continuity of the conveying process is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic conveying equipment, and specifically relates to a dense-phase pneumatic conveying device with a two-stage pressurization structure. Background Technology

[0002] Currently, dense phase pneumatic conveying technology is widely used in powder material conveying scenarios due to its advantages such as high conveying efficiency, low energy consumption, and low material breakage rate. However, existing dense phase pneumatic conveying devices often encounter problems such as conveying interruption and material deposition when conveying high-viscosity, high-density materials or long-distance conveying due to insufficient pressure from a single pressurization structure. In addition, the gas-solid mixing efficiency of traditional devices is low, which can easily cause pipeline blockage, affecting the stability and reliability of conveying and making it difficult to meet the demand for efficient and continuous conveying in industrial production.

[0003] 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 dense phase pneumatic conveying device with a two-stage pressurization structure to solve the problems of conveying interruption and material deposition caused by insufficient pressure of a single pressurization structure when conveying high-viscosity, high-density materials or long-distance conveying in existing dense phase pneumatic conveying devices. In addition, the gas-solid mixing efficiency of traditional devices is low, which can easily cause pipeline blockage, affecting the stability and reliability of conveying, and making it difficult to meet the needs of efficient and continuous conveying in industrial production. Utility Model Content

[0004] This invention proposes a dense phase pneumatic conveying device with a dual-stage pressurization structure, which solves the problems of conveying interruption and material deposition caused by insufficient pressure of a single pressurization structure when conveying high-viscosity, high-density materials or long-distance conveying in existing dense phase pneumatic conveying devices. In addition, the gas-solid mixing efficiency of traditional devices is low, which can easily cause pipeline blockage, affecting the stability and reliability of conveying and making it difficult to meet the needs of efficient and continuous conveying in industrial production.

[0005] The technical solution of this utility model is as follows: a dense phase pneumatic conveying device with a dual-stage pressurization structure includes a transfer tank with an internal hollow structure. A through hole for feeding is opened on the right side of the outer peripheral surface of the transfer tank, and a bracket is fixedly connected to the left side of the outer peripheral surface of the transfer tank.

[0006] A support block is fixedly connected to the top surface of the bracket. Hollow air supply pipes are fixedly connected in a linear array to the top surface of the support block. An air inlet pipe is fixedly connected to the top of the outer circumference of the air supply pipe, and an air outlet pipe is fixedly connected to the right side of the air supply pipe. One-way valves are fixedly connected to the outer sides of both the air outlet pipe and the air supply pipe. A cylindrical guide rod is inserted into the inside of the air supply pipe. The air supply pipe extends from the left side of the guide rod to the left. A piston plate is fixedly connected to the right side of the guide rod. A sealing ring is fixedly connected to the outer circumference of the piston plate. A connecting plate is fixedly connected to the left end of the guide rod. A return spring is fixedly connected between the connecting plate and the air supply pipe.

[0007] In a preferred embodiment, a servo motor is fixedly connected to the bottom surface of the bracket, and a drive gear is mounted on the top output shaft of the servo motor. The drive gear is a half-gear structure.

[0008] In a preferred embodiment, a toothed rack is fixedly connected to the left end face of the connecting plate. The toothed rack is arranged horizontally and meshes with the drive gear for transmission.

[0009] In a preferred embodiment, the main body of the transfer tank has an internal hollow structure, and a booster pump is fixedly connected to the top surface of the transfer tank.

[0010] In a preferred embodiment, a discharge pipe is fixedly connected to the bottom opening of the transfer tank, and a circular valve plate controlled by a motor is installed inside the discharge pipe, which is connected to the transfer tank.

[0011] In a preferred embodiment, a flange is fixedly connected to the bottom end face of the feed pipe. The flange has a circular body and through holes arranged in a ring array inside.

[0012] In a preferred embodiment, a retaining bolt is installed inside the through hole in the flange.

[0013] In a preferred embodiment, a discharge pipe is installed at the bottom end of the flange via a fixing bolt.

[0014] In a preferred embodiment, the main body of the discharge pipe is an L-shaped structure, and a flange is also fixedly connected to the top of the longitudinal component in the discharge pipe.

[0015] In a preferred embodiment, the discharge pipe has an internal hollow structure and is connected to the feed pipe.

[0016] After using the above technical solution, the beneficial effects of this utility model are:

[0017] 1. In this utility model, a two-stage pressurization system is formed by the initial pressurization of the material in the transfer tank by the booster pump and the secondary pressurization of the airflow by the pulse pressurization structure composed of servo motor, drive gear, gear rack, piston plate, etc. Compared with the single pressurization structure in the prior art, the two-stage pressurization significantly improves the overall conveying pressure, effectively solves the problem of conveying interruption and material deposition caused by insufficient pressure when conveying high viscosity, high density materials or long distances, and ensures the continuity of the conveying process.

[0018] 2. In this utility model, the piston plate reciprocates within the air supply pipe by using the half-gear structure of the drive gear in conjunction with the return spring, generating periodic pulsed airflow. This pulsed airflow is fully mixed with the material in the transfer tank within the feed pipe and discharge pipe, forming a uniform gas-solid mixture. Compared to the lower gas-solid mixing efficiency of traditional devices, this significantly reduces the occurrence of pipe blockage, improves the stability and reliability of the conveying process, and meets the demand for efficient and continuous conveying in industrial production. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the front side view of the pneumatic conveying device of this utility model after disassembly and cross-section.

[0021] Figure 2 This is a front view structural schematic diagram of the pneumatic conveying device of this utility model;

[0022] Figure 3 This is a top view of the pneumatic conveying device of this utility model;

[0023] Figure 4 This is a schematic diagram of the combined structure of the transfer tank and booster pump in the pneumatic conveying device of this utility model;

[0024] Figure 5 This is a schematic diagram of the combined structure of the bracket and support block of the pneumatic conveying device of this utility model;

[0025] Figure 6 This is a left-side structural schematic diagram of the pneumatic conveying device of this utility model;

[0026] In the diagram, 1. Transfer tank; 101. Booster pump; 1011. Feed pipe; 1012. Flange; 1013. Fixing bolt; 1014. Discharge pipe; 2. Bracket; 201. Support block; 2011. Servo motor; 2012. Drive gear; 3. Air supply pipe; 301. Air inlet pipe; 3011. Air outlet pipe; 3012. Manifold; 3013. Check valve; 3014. Guide rod; 3015. Piston plate; 3016. Return spring; 3017. Connecting plate; 3018. Gear rack. Detailed Implementation

[0027] 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.

[0028] like Figures 1-6 As shown, a dense phase pneumatic conveying device with a dual-stage pressurization structure includes: a transfer tank 1 with an internal hollow structure, a through hole for feeding is opened on the right side of the outer peripheral surface of the transfer tank 1, and a bracket 2 is fixedly connected to the left side of the outer peripheral surface of the transfer tank 1.

[0029] A support block 201 is fixedly connected to the top surface of the bracket 2. A hollow air supply pipe 3 is fixedly connected in a straight array on the top surface of the support block 201. An air inlet pipe 301 is fixedly connected to the top of the outer periphery of the air supply pipe 3 and communicates with it. An air outlet pipe 3011 is fixedly connected to the right side of the air supply pipe 3. A one-way valve 3013 is fixedly connected to the outer side of both the air outlet pipe 3011 and the air supply pipe 3. A cylindrical guide rod 3014 is inserted into the inside of the air supply pipe 3. The air supply pipe 3 extends from the left side of the guide rod 3014 to the left. A piston plate 3015 is fixedly connected to the right side of the guide rod 3014. A sealing ring is fixedly connected to the outer periphery of the piston plate 3015. A connecting plate 3017 is fixedly connected to the left end of the guide rod 3014. A return spring 3016 is fixedly connected between the connecting plate 3017 and the air supply pipe 3.

[0030] Among them, a servo motor 2011 is fixedly connected to the bottom end face of the bracket 2, and a drive gear 2012 is installed on the top output shaft of the servo motor 2011. The drive gear 2012 is a half gear structure. A gear rack 3018 is fixedly connected to the left end face of the connecting plate 3017. The gear rack 3018 is arranged horizontally and meshes with the drive gear 2012 for transmission.

[0031] The main body of the transfer tank 1 is a hollow structure, and a booster pump 101 is fixedly connected to the top surface of the transfer tank 1. A discharge pipe 1011 is fixedly connected to the bottom opening of the transfer tank 1. A circular valve plate controlled by a motor is installed inside the discharge pipe 1011. The discharge pipe 1011 is connected to the transfer tank 1.

[0032] Among them, a flange 1012 is fixedly connected to the bottom end face of the feed pipe 1011. The main body of the flange 1012 is circular, and the inside of the flange 1012 has through holes in a ring array. A fixing bolt 1013 is installed inside the through holes in the flange 1012, and a discharge pipe 1014 is installed at the bottom end of the flange 1012 through the fixing bolt 1013.

[0033] The main body of the discharge pipe 1014 is an L-shaped structure, and the top of the longitudinal component in the discharge pipe 1014 is also fixedly connected to the flange 1012. The discharge pipe 1014 has an internal hollow structure and is connected to the feed pipe 1011.

[0034] In use, the material enters the internal hollow cavity through the through hole on the right side of the transfer tank 1. The booster pump 101 starts and initially pressurizes the material in the transfer tank 1 to form a dense phase material with a certain degree of fluidity. The servo motor 2011 at the bottom of the bracket 2 drives the drive gear 2012 with a half-gear structure to rotate clockwise. When the tooth surface of the drive gear 2012 meshes with the tooth row 3018, it pulls the connecting plate 3017 to the left. Through the guide rod 3014, it drives the piston plate 3015 to move to the left in the air supply pipe 3. The volume in the air supply pipe 3 increases and a negative pressure is formed. At this time, the one-way valve 3013 on the outside of the air inlet pipe 301 opens, and outside air is drawn into the air supply pipe 3 through the air inlet pipe 301. The one-way valve 3013 on the outside of the air outlet pipe 3011 closes to prevent airflow backflow.

[0035] When the drive gear 2012 rotates to the toothless surface and meshes with the gear rack 3018, the return spring 3016 pushes the connecting plate 3017 to the right, and the piston plate 3015 compresses the air in the air supply pipe 3 to the right. At this time, the one-way valve 3013 of the air inlet pipe 301 is closed, and the one-way valve 3013 of the air outlet pipe 3011 is opened. The compressed airflow is transported to the transfer tank 1 through the air outlet pipe 3011 and initially mixed with the material to form a gas-solid mixed phase.

[0036] The drive gear 2012 rotates continuously, and through the reciprocating motion of the gear rack 3018 and the piston plate 3015, the air supply pipe 3 periodically draws in and compresses air, forming a pulsed airflow. This airflow is gathered by the collector pipe 3012 and enters the discharge pipe 1011 at the bottom of the transfer tank 1 under high pressure, which further pressurizes the material. Under the dual action of the booster pump 101 and the pulsed airflow, the material in the transfer tank 1 is controlled by the circular valve plate at the bottom of the discharge pipe 1011 to discharge at a controlled rate. It is fully mixed with the high-pressure airflow in the discharge pipe 1014 to form a dense phase flow. The L-shaped structure of the discharge pipe 1014 guides the gas-solid mixture into the conveying pipeline, and long-distance conveying is achieved by utilizing the pressure difference generated by the dual-stage pressurization.

[0037] The one-way valve 3013 of the air supply pipe 3 and the air outlet pipe 3011 ensures unidirectional airflow and avoids pressure loss; the sealing ring on the outer periphery of the piston plate 3015 prevents compressed air leakage and improves pressurization efficiency; the combination of the flange 1012 and the fixing bolt 1013 ensures that the feed pipe 1011 and the discharge pipe 1014 are firmly connected and prevents air leakage or material leakage.

[0038] 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 dense phase pneumatic conveying device having a dual stage supercharging structure, comprising a transfer tank (1) having an internal hollow structure, a through hole for feeding being formed on the right side of the outer peripheral surface of the transfer tank (1), characterized in that, A bracket (2) is fixedly connected to the left side of the outer periphery of the transfer tank (1); A support block (201) is fixedly connected to the top surface of the bracket (2). A hollow air supply pipe (3) is fixedly connected in a straight array on the top surface of the support block (201). An air inlet pipe (301) is fixedly connected to the top of the outer periphery of the air supply pipe (3), and an air outlet pipe (3011) is fixedly connected to the right side of the air supply pipe (3). A one-way valve (3013) is fixedly connected to the outer sides of both the air outlet pipe (3011) and the air supply pipe (3). 3) has a cylindrical guide rod (3014) inserted inside. The left side of the guide rod (3014) extends to the left side to form an air supply pipe (3). A piston plate (3015) is also fixedly connected to the right side of the guide rod (3014). A sealing ring is fixedly connected to the outer circumference of the piston plate (3015). A connecting plate (3017) is fixedly connected to the left end of the guide rod (3014). A return spring (3016) is fixedly connected between the connecting plate (3017) and the air supply pipe (3).

2. A dense phase pneumatic conveying device with a two-stage pressure boost according to claim 1, characterized in that A servo motor (2011) is fixedly connected to the bottom end of the bracket (2), and a drive gear (2012) is installed on the top output shaft of the servo motor (2011). The drive gear (2012) is a half gear structure.

3. A dense phase pneumatic conveying device with a two-stage pressure boost structure according to claim 1, characterized in that, A toothed rack (3018) is fixedly connected to the left end face of the connecting plate (3017). The toothed rack (3018) is arranged horizontally and meshes with the drive gear (2012) for transmission.

4. The dense phase pneumatic conveying device with a two-stage supercharging structure according to claim 1, characterized in that, The main body of the transfer tank (1) is a hollow structure, and a booster pump (101) is fixedly connected to the top surface of the transfer tank (1).

5. A dense-phase pneumatic conveying device with a dual-stage pressurization structure according to claim 1, characterized in that, A feeding pipe (1011) is fixedly connected to the bottom opening of the transfer tank (1). A circular valve plate that is controlled to rotate by a motor is installed inside the feeding pipe (1011). The feeding pipe (1011) is connected to the transfer tank (1).

6. A dense-phase pneumatic conveying device with a dual-stage pressurization structure according to claim 5, characterized in that, A flange (1012) is fixedly connected to the bottom end face of the feed pipe (1011). The main body of the flange (1012) is circular, and the inside of the flange (1012) is provided with through holes in a ring array.

7. A dense-phase pneumatic conveying device with a dual-stage pressurization structure according to claim 6, characterized in that, A fixing bolt (1013) is installed inside the through hole opened in the flange (1012).

8. A dense-phase pneumatic conveying device with a dual-stage pressurization structure according to claim 7, characterized in that, The bottom end of the flange (1012) is fitted with a discharge pipe (1014) via a fixing bolt (1013).

9. A dense-phase pneumatic conveying device with a dual-stage pressurization structure according to claim 8, characterized in that, The main body of the discharge pipe (1014) is an L-shaped structure, and the top of the longitudinal component in the discharge pipe (1014) is also fixedly connected to a flange (1012).

10. A dense-phase pneumatic conveying device with a dual-stage pressurization structure according to claim 9, characterized in that, The discharge pipe (1014) has an internal hollow structure and is connected to the feed pipe (1011).

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