Dense Phase Pneumatic Conveying Distributor

Abstract

This utility model relates to the field of dense phase pneumatic conveying equipment, and in particular to a dense phase pneumatic conveying distributor, comprising a housing, with a feed inlet located at the center of the bottom surface of the housing; a connecting pipe rotatably mounted above the feed inlet; a rotary drive mechanism connected to the connecting pipe; a plurality of discharge ports evenly arranged along the circumference of the top surface of the housing; a flange sleeved on the upper end of the connecting pipe; an axial moving mechanism connected to the flange, which can drive the flange to move axially along the discharge ports; and sealing rings installed on the inner sidewall and top surface of the flange. By evenly arranging a plurality of discharge ports along the circumference of the top surface of the housing, and by rotatably mounting the connecting pipe and connecting it to the rotary drive mechanism, the need to convey materials to multiple receiving locations can be met, thus expanding the scope of application.

Description

Technical Field

[0001] This utility model relates to the field of dense phase pneumatic conveying equipment, and in particular to a dense phase pneumatic conveying distributor. Background Technology

[0002] Dense-phase pneumatic conveying is a method of conveying solid particulate materials in pipelines using gas as the conveying medium at high pressure and low velocity. Due to the high pressure and low velocity, the solid particles remain relatively dense during conveying, resulting in a larger volume of material conveyed per unit time. It is particularly suitable for long-distance, high-volume material conveying.

[0003] In dense-phase pneumatic conveying, materials need to be transported to different downstream devices, sometimes even to more than a dozen material receiving points. This requires a distributor capable of automatically distributing the mixture of material and compressed air according to the set conveying points. Existing technologies often use distribution valves, but these valves have limited outlets, resulting in a narrow range of applications. Another approach is to disclose a reversing valve for a pneumatic conveying system, as shown in publication number CN115783783B. This valve includes a housing and an internal material channel. One end of the housing has an inlet, and the other end has a first outlet and a second outlet. One end of the material channel is fixedly connected to the inlet, and the material channel is connected to a drive device on the housing. The housing contains a stretchable sealing unit for sealing the other outlet.

[0004] Since compressed air is used as the conveying medium, the material channel inside the distributor and the discharge port of the housing must be sealed to prevent leakage of compressed air and material. However, the above solution lacks a sealing mechanism between the material channel and the discharge port of the housing. Utility Model Content

[0005] To address the current problem of the lack of a sealing mechanism between the material channel and the shell outlet, this utility model provides a dense phase pneumatic conveying distributor.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] A dense-phase pneumatic conveying distributor includes a housing with an inlet at the center of its bottom surface. A connecting pipe is rotatably mounted above the inlet, connected to a rotary drive mechanism. A plurality of outlets are evenly arranged circumferentially on the top surface of the housing. A flange is fitted over the upper end of the connecting pipe. The flange is connected to an axial movement mechanism, which drives the flange to move axially along the outlets. Sealing rings are installed on the inner wall and top surface of the flange. By evenly arranging a plurality of outlets circumferentially on the top surface of the housing, and by rotatably mounting the connecting pipe and connecting it to the rotary drive mechanism, the distributor can meet the need to transport materials to multiple receiving locations, thus expanding its applicability. The sealing rings installed on the inner wall and top surface of the flange, in conjunction with the axial movement mechanism driving the flange to move axially along the outlets, can press the flange tightly against the outlets, increasing the sealing effect, preventing leakage of material and compressed air, and ensuring the normal operation of the dense-phase pneumatic conveying system.

[0008] Preferably, the axial movement mechanism includes a boss and a cam that are fitted together; the boss is fixedly mounted on the bottom surface of the flange; the cam is fixedly mounted on the top surface inside the housing via a bracket, and is located at the lower opening edge of each discharge port. When the connecting pipe moves the boss to the discharge port and contacts the cam, it drives the flange to move axially and presses against the discharge port. Combined with the sealing rings installed on the inner wall and top surface of the flange, this effectively enhances the sealing effect, prevents material and compressed air leakage, and ensures stable and efficient operation of the dense-phase pneumatic conveying system.

[0009] Preferably, the axial movement mechanism further includes a limiting component disposed on the connecting pipe; the limiting component is used to restrict the rotation of the flange about its axis. This ensures that the flange maintains a stable posture throughout its movement with the connecting pipe to the discharge port, its axial movement in conjunction with the cam, and its pressing against the discharge port. This prevents displacement due to rotation, avoids seal failure, ensures a tight fit between the sealing ring and the discharge port, further enhances the sealing effect, and eliminates material and compressed air leakage.

[0010] Preferably, the bracket includes a mounting base; the mounting base is bolted to the top surface inside the housing and is located at the lower edge of the outlet opening; an L-shaped rod is fixedly mounted on the mounting base; a cam is fixedly connected to the end of the L-shaped rod away from the mounting base. This provides a reliable mounting foundation for the cam, ensuring its fixed and precise position, guaranteeing the stability and accuracy of the cam's engagement with the boss, and ensuring that the flange can precisely press against the outlet when moving axially, thus enhancing the sealing effect; the bracket structure formed by the L-shaped rod and the mounting base distributes the mechanical stress generated during the material distribution process, improving the structural strength and durability of the entire distributor, reducing failures caused by loose or deformed components, ensuring long-term stable operation of the distributor, and effectively optimizing the material distribution efficiency and reliability of the dense phase pneumatic conveying system.

[0011] Preferably, the limiting component includes an annular platform fixedly mounted on the upper part of the connecting pipe; a limiting groove is provided on the outer wall of the annular platform; the limiting groove extends downward from the top surface of the annular platform; and a limiting strip is fixedly mounted on the bottom surface of the flange in conjunction with the limiting groove. The annular platform fixed on the upper part of the connecting pipe and the limiting strip on the bottom surface of the flange are tightly engaged through the limiting groove, precisely limiting the rotation of the flange around its axis. This ensures that the flange maintains a stable posture throughout the entire process of moving with the connecting pipe, contacting the cam to achieve axial movement, and pressing against the discharge port, avoiding positional displacement due to rotation, effectively preventing misalignment between the sealing ring and the discharge port, ensuring sealing effect, and preventing material and compressed air leakage.

[0012] Preferably, a limiting platform is provided at the upper end of the feed inlet and the lower end of the connecting pipe; a second sealing ring is provided between the lower end of the connecting pipe and the limiting platform. The second sealing ring tightly fills the gap between the connecting pipe and the limiting platform, effectively preventing compressed air and material from leaking from the gap between them, further enhancing the sealing performance of the distributor, and avoiding problems such as insufficient conveying pressure and reduced material conveying efficiency due to gas leakage.

[0013] Preferably, the connecting pipe is S-shaped. The S-shaped design optimizes the conveying path of the material and compressed air mixture. During the process of rotating the connecting pipe to switch the discharge port, it can effectively buffer the inertial impact of the material flow, making the material flow in the pipe more stable and orderly, and reducing the risk of material blockage caused by sudden changes in flow rate.

[0014] Preferably, the rotary drive mechanism includes a motor fixedly mounted in the middle of the top surface of the housing; the output end of the motor passes through the housing and is connected to a rotating shaft; the end of the rotating shaft away from the motor is fixedly connected to the outer wall of the connecting pipe.

[0015] Preferably, the shaft is hollow. The hollow structure effectively reduces the amount of material used and the weight of the shaft, lowers the operating load of the rotary drive mechanism, thereby reducing the energy consumption of the motor and improving energy utilization efficiency.

[0016] Preferably, the outer peripheral wall of the shell has several perforations. The perforated structure significantly reduces the weight of the shell.

[0017] The beneficial effects of this utility model are:

[0018] By evenly arranging several discharge ports along the circumference on the top surface of the casing, and connecting the rotating pipe to a rotary drive mechanism, the system can meet the needs of transporting materials to multiple receiving locations, thus expanding its application range. Sealing rings are installed on both the inner wall and top surface of the flange. These, in conjunction with an axial movement mechanism, drive the flange to move axially along the discharge port, pressing the flange tightly against the discharge port, increasing the sealing effect, preventing leakage of material and compressed air, and ensuring the normal operation of the dense-phase pneumatic conveying system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0023] Figure 5 This is a schematic diagram of the structure of the top surface of the shell, the discharge port, the rotating shaft, and the connecting pipe of this utility model;

[0024] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0025] Figure 7 This is a schematic diagram of the flange of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1-shell, 2-inlet, 3-connecting pipe, 4-outlet, 5-flange, 6-sealing ring one, 7-bore, 8-cam, 9-bracket, 10-circular platform, 11-limiting groove, 12-limiting strip, 13-limiting platform, 14-sealing ring two, 15-motor, 16-shaft;

[0027] 101 - Hollow hole; 901 - Mounting base; 902 - L-shaped rod. Detailed Implementation

[0028] The present invention will now be described and explained in detail with reference to the accompanying drawings.

[0029] Example 1

[0030] like Figure 1 and Figure 2 As shown, a dense phase pneumatic conveying and distributing device includes a housing 1, with a feed inlet 2 located in the middle of the bottom surface of the housing 1; a connecting pipe 3 is rotatably mounted on the upper end of the feed inlet 2; the connecting pipe 3 is connected to a rotary drive mechanism; a plurality of discharge ports 4 are evenly arranged along the circumferential direction on the top surface of the housing 1; a flange 5 is sleeved on the upper end of the connecting pipe 3; the flange 5 is connected to an axial moving mechanism, which can drive the flange 5 to move axially along the discharge ports 4; a sealing ring 6 is installed on the inner side wall and the top surface of the flange 5.

[0031] By evenly arranging several discharge ports 4 along the circumferential direction on the top surface of the housing 1, and connecting the pipe 3 rotatably connected to the rotary drive mechanism, the need to transport materials to multiple receiving locations can be met, thus expanding the scope of application. Sealing rings 6 are installed on both the inner wall and top surface of the flange 5. Together with the axial movement mechanism, the flange 5 is driven to move axially along the discharge port 4, pressing the flange 5 tightly against the discharge port 4, increasing the sealing effect, preventing leakage of materials and compressed air, and ensuring the normal operation of the dense-phase pneumatic conveying system.

[0032] In the above configuration, the connecting pipe 3 is S-shaped. The rotary drive mechanism includes a motor 15 fixedly mounted in the middle of the top surface of the housing 1; the output end of the motor 15 passes through the housing 1 and is connected to a rotating shaft 16; the end of the rotating shaft 16 away from the motor 15 is fixedly connected to the outer wall of the connecting pipe 3. The rotating shaft 16 is hollow. Several perforated holes 101 are provided on the outer peripheral wall of the housing 1.

[0033] The S-shaped connecting pipe 3 optimizes the conveying path of the material and compressed air mixture. During the rotation of the connecting pipe 3 to switch the outlet 4, it effectively buffers the inertial impact of the material flow, making the material flow within the pipe smoother and more orderly, reducing the risk of material blockage caused by sudden changes in flow rate. The hollow structure of the rotating shaft 16 effectively reduces the material usage and weight of the shaft, lowering the operating load on the rotary drive mechanism connected to the shaft 16, such as the motor 15, thereby reducing the energy consumption of the motor 15 and improving energy efficiency. The perforated holes 101 on the housing 1 significantly reduce the weight of the housing 1.

[0034] In other alternative embodiments, the rotary drive mechanism includes a motor mounted on the bottom surface inside the housing 1, with a drive pulley mounted on the motor output end. The drive pulley is connected to a driven pulley via a synchronous belt, and the driven pulley is mounted on the lower part of the connecting pipe 3.

[0035] like Figure 4 As shown, a limiting platform 13 is provided at the lower end of the connecting pipe 3 and the upper end of the feed inlet 2; a sealing ring 14 is provided between the lower end of the connecting pipe 3 and the limiting platform 13. The sealing ring 14 tightly fills the gap between the connecting pipe 3 and the limiting platform 13, effectively preventing compressed air and materials from leaking from the gap between them, further enhancing the sealing performance of the distributor, and avoiding the problems of insufficient conveying pressure and reduced material conveying efficiency caused by gas leakage.

[0036] like Figure 3 , Figure 5 , Figure 6 and Figure 7As shown, the axial movement mechanism includes a boss 7 and a cam 8 that are fitted together; the boss 7 is fixedly mounted on the bottom surface of the flange 5; the cam 8 is fixedly mounted on the inner top surface of the housing 1 via a bracket 9, and is located at the lower opening edge of each discharge port 4. The axial movement mechanism also includes a limiting assembly mounted on the connecting pipe 3; the limiting assembly is used to limit the rotation of the flange 5 around its axis. The bracket 9 includes a mounting base 901; the mounting base 901 is bolted to the inner top surface of the housing 1, and is located at the lower opening edge of the discharge port 4; an L-shaped rod 902 is fixedly mounted on the mounting base 901; the end of the L-shaped rod 902 away from the mounting base 901 is fixedly connected to the cam 8. The limiting assembly includes an annular platform 10 fixedly mounted on the upper part of the connecting pipe 3; a limiting groove 11 is provided on the outer wall of the annular platform 10; the limiting groove 11 extends downward from the top surface of the annular platform 10; a limiting strip 12 is fixedly mounted on the bottom surface of the flange 5 in conjunction with the limiting groove 11.

[0037] When the connecting pipe 3 moves the boss 7 to the outlet 4 and contacts the cam 8, it drives the flange 5 to move axially and press against the outlet 4. Combined with the sealing ring 6 installed on the inner wall and top surface of the flange 5, this effectively enhances the sealing effect, preventing material and compressed air leakage and ensuring stable and efficient operation of the dense-phase pneumatic conveying system. The limiting assembly, including the limiting groove 11, the limiting strip 12, and the limiting platform 13, ensures that the flange 5 maintains a stable posture throughout the process of moving with the connecting pipe 3 to the outlet 4, cooperating with the cam 8 to complete the axial movement and press against the outlet 4. This prevents displacement due to rotation, avoids seal failure, ensures a tight fit between the sealing ring 6 and the outlet 4, further strengthens the sealing effect, and eliminates material and compressed air leakage. The rational design of bracket 9 provides a reliable mounting base for cam 8, ensuring its fixed and precise position. This guarantees the stability and accuracy of the fit between cam 8 and boss 7, ensuring that flange 5 can precisely press against outlet 4 during axial movement, thus enhancing the sealing effect. The bracket 9 structure, composed of L-shaped rod 902 and mounting base 901, distributes the mechanical stress generated during material distribution, improving the structural strength and durability of the entire distributor, reducing malfunctions caused by loose or deformed components, ensuring long-term stable operation of the distributor, and effectively optimizing the material distribution efficiency and reliability of the dense phase pneumatic conveying system. The annular platform 10 fixed to the upper part of connecting pipe 3 and the limiting strip 12 on the bottom surface of flange 5 are tightly fitted through limiting groove 11, precisely limiting the rotation of flange 5 around its axis. This ensures that flange 5 maintains a stable posture throughout the entire process of moving with connecting pipe 3, contacting cam 8 to achieve axial movement and pressing against outlet 4, avoiding positional deviation due to rotation, effectively preventing misalignment of sealing ring 6 and outlet 4, ensuring sealing effect, and preventing material and compressed air leakage.

[0038] In other alternative embodiments, the axial movement mechanism includes an electric push rod mounted on the upper part of the outer wall of the connecting pipe 3, with the push rod of the electric push rod connected to the flange 5. A proximity switch is installed on the outer peripheral wall of the flange 5, and a protrusion is provided at the bottom edge of the discharge port 4 to cooperate with the proximity switch. When the proximity switch moves to below the protrusion, the proximity switch receives a signal and sends it to the controller. The controller controls the electric push rod to move, driving the flange 5 to move axially along the discharge port 4 and press it against the discharge port 4.

Claims

1. A dense-phase pneumatic conveying and distributing device, comprising a housing (1), characterized in that, The shell (1) has a feed inlet (2) in the middle of the bottom surface; the feed inlet (2) has a connecting pipe (3) rotatably installed at the upper end; the connecting pipe (3) is connected to a rotary drive mechanism; the shell (1) has several discharge ports (4) evenly arranged along the circumferential direction on the top surface; the connecting pipe (3) is fitted with a flange (5) at the upper end; the flange (5) is connected to an axial moving mechanism, which can drive the flange (5) to move axially along the discharge port (4); the inner wall and top surface of the flange (5) are both equipped with a sealing ring (6).

2. The dense-phase pneumatic conveying and distributing device according to claim 1, characterized in that, The axial movement mechanism includes a boss (7) and a cam (8) that are fitted together; the boss (7) is fixedly mounted on the bottom surface of the flange (5); the cam (8) is fixedly mounted on the top surface of the inner side of the housing (1) by a bracket (9) and is located at the lower opening edge of each discharge port (4).

3. The dense-phase pneumatic conveying and distributing device according to claim 2, characterized in that, The axial movement mechanism also includes a limiting component disposed on the connecting pipe (3); the limiting component is used to limit the rotation of the flange (5) about its axis.

4. The dense-phase pneumatic conveying and distributing device according to claim 3, characterized in that, The bracket (9) includes a mounting base (901); the mounting base (901) is bolted to the top surface of the inner side of the housing (1) and is located at the lower opening edge of the discharge port (4); an L-shaped rod (902) is fixedly mounted on the mounting base (901); a cam (8) is fixedly connected to the end of the L-shaped rod (902) away from the mounting base (901).

5. The dense-phase pneumatic conveying and distributing device according to claim 3, characterized in that, The limiting assembly includes a circular platform (10) fixedly installed on the upper part of the connecting pipe (3); a limiting groove (11) is provided on the outer wall of the circular platform (10); the limiting groove (11) extends downward from the top surface of the circular platform (10); and a limiting strip (12) is fixedly installed on the bottom surface of the flange (5) in conjunction with the limiting groove (11).

6. The dense-phase pneumatic conveying and distributing device according to claim 1, characterized in that, The upper end of the feed inlet (2) is fitted with the connecting pipe (3) and the lower end is provided with a limiting platform (13); a sealing ring (14) is provided between the lower end of the connecting pipe (3) and the limiting platform (13).

7. The dense-phase pneumatic conveying and distributing device according to claim 6, characterized in that, The connecting pipe (3) is S-shaped.

8. The dense-phase pneumatic conveying and distributing device according to claim 7, characterized in that, The rotary drive mechanism includes a motor (15) fixedly installed in the middle of the top surface of the housing (1); the output end of the motor (15) passes through the housing (1) and is connected to a rotating shaft (16); the end of the rotating shaft (16) away from the motor (15) is fixedly connected to the outer wall of the connecting pipe (3).

9. The dense-phase pneumatic conveying and distributing device according to claim 8, characterized in that, The rotating shaft (16) is hollow.

10. The dense-phase pneumatic conveying and distributing device according to claim 1, characterized in that, The outer peripheral wall of the shell (1) is provided with several hollow holes (101).

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