Pneumatic conveying equipment for chemical powder

Abstract

The utility model discloses pneumatic conveying equipment for chemical powder, and belongs to the technical field of pneumatic conveying. Pneumatic conveying equipment for chemical powder comprises a bottom plate, a feeding hopper, a receiving bin and an air source supply unit are fixedly arranged on the bottom plate, the feeding hopper, the receiving bin and the air source supply unit are communicated through a conveying pipeline, the pneumatic conveying equipment further comprises a screening frame used for screening the powder, and the screening frame is arranged in the feeding hopper in a sliding mode and used for screening the powder. A top cover is detachably arranged at the top of the feeding hopper, a feeding pipe is arranged on the top cover, the end, extending into the feeding hopper, of the feeding pipe is communicated with the interior of the screen frame, and a driving part used for driving the screen frame to slide is fixedly arranged on the top cover; the screen frame is arranged in the feeding hopper in a reciprocating sliding mode, the output end of the feeding pipe is communicated with the interior of the screen frame, incoming materials can be screened, the phenomenon that caking or large solid particles in powder block a conveying pipeline is reduced, and the using effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic conveying technology, and in particular to a pneumatic conveying device for chemical powders. Background Technology

[0002] A chemical powder pneumatic conveying system is a device that uses compressed air or gas as a power source to transport powdered materials from one location to another through pipelines. This conveying method has advantages such as high efficiency, safety, and cleanliness, and is widely used in industries such as chemical, pharmaceutical, food processing, and building materials. Depending on the specific process requirements and powder characteristics, the working modes of a chemical powder pneumatic conveying system mainly include: positive pressure dilute phase conveying, negative pressure dilute phase conveying, and mixed conveying. It mainly includes a feed hopper, conveying pipeline, air supply unit, and receiving bin.

[0003] When using existing feed hoppers, the powder will clump together due to prolonged storage, making it difficult to screen the powder during the conveying process. This can easily lead to blockage of the conveying pipes and affect the performance of the feed hoppers. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that it is inconvenient to screen powder when it enters the feed hopper, and that the agglomerated powder is easy to block the pipeline. Therefore, a pneumatic conveying device for chemical powder is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pneumatic conveying device for chemical powder includes a base plate, on which a feed hopper, a receiving bin, and an air supply unit are fixedly mounted. The feed hopper, receiving bin, and air supply unit are connected by a conveying pipe. The device also includes a screen frame for screening the powder, which is slidably disposed within the feed hopper. A top cover is detachably mounted on the top of the feed hopper, and a feed pipe is mounted on the top cover. One end of the feed pipe extends into the feed hopper and connects to the screen frame. A drive unit for driving the screen frame to slide is fixedly mounted on the top cover.

[0007] To ensure reliable sliding of the screen frame, preferably, a fixing rod is fixedly installed at the top of both ends of the screen frame, a limit block is fixedly installed at the top of the two fixing rods, a limit groove is opened on the bottom end face of the top cover, and the two limit blocks are slidably connected to the corresponding limit grooves respectively.

[0008] To facilitate the reciprocating sliding of the screen frame for screening powder, the driving unit further includes a third gear rotatably disposed within the top cover. A motor for driving the third gear is fixedly disposed on the top of the top cover. A rotating shaft is coaxially fixedly disposed on the third gear. A first rod is fixedly disposed on the rotating shaft. A second rod is rotatably disposed on the first rod. A rotating plate is fixedly disposed on one of the fixed rods. The end of the second rod away from the first rod is rotatably connected to the rotating plate.

[0009] To prevent the screen frame from falling off the top cover, the limiting groove has a T-shaped cross-section.

[0010] Preferably, a first gear is fixedly installed on the outer wall of the feed pipe, and the first gear meshes with a second gear and a third gear. A baffle with a funnel-shaped structure is fixedly installed at one end of the feed pipe extending into the feed hopper. A conical block matching the baffle is lifted and lowered on the top cover. A protrusion is fixedly installed on the inner wall of the baffle. Powder falls from the channel formed between the inner wall of the baffle and the outer wall of the conical block. A lifting part for driving the conical block to rise and fall is provided on the top cover.

[0011] Furthermore, two guide rods are fixedly installed on the outer wall of the conical block, and the ends of the two guide rods away from the conical block are slidably connected to the top cover.

[0012] Furthermore, the lifting unit includes a reciprocating screw fixedly mounted on the second gear, a lifting groove is provided inside the top cover, an mounting plate is slidably mounted on the lifting groove, the mounting plate is threadedly connected to the reciprocating screw, and a connecting cylinder for driving the lifting of the conical block is fixedly mounted on the mounting plate.

[0013] Furthermore, a support rod is fixedly installed on the conical block, a connecting rod is fixedly installed at the top of the support rod, a fixed plate is slidably installed inside the connecting cylinder, one end of the connecting rod extending into the connecting cylinder is fixedly connected to the fixed plate, and a spring is sleeved on the connecting rod, with both ends of the spring abutting against the fixed plate and the connecting cylinder respectively.

[0014] Preferably, a dust collector is fixedly installed inside the receiving chamber, and a discharge pipe with a valve is fixedly installed at the bottom of the receiving chamber.

[0015] Preferably, the air supply unit includes a Roots blower, the output end of which is fixedly equipped with a spray cylinder, the bottom of the feed hopper is connected to the spray cylinder through a discharge pipe, and the two ends of the conveying pipe are respectively connected to the output end of the spray cylinder and the receiving bin.

[0016] Compared with the prior art, this utility model provides a pneumatic conveying device for chemical powders, which has the following advantages:

[0017] 1. This chemical powder pneumatic conveying equipment uses a screen frame that slides back and forth inside the feed hopper to connect the output end of the feed pipe to the screen frame, which can screen the incoming material, reduce the phenomenon of agglomeration or large solid particles in the powder clogging the conveying pipe, and improve the use effect.

[0018] 2. This pneumatic conveying equipment for chemical powders features a rotating feed pipe mounted on a top cover. A funnel-shaped baffle is fixedly installed at the output end of the feed pipe. A reciprocating cone block is mounted on the top cover, and a protrusion is fixedly installed on the inner wall of the baffle. This allows for the crushing of clumped materials as the feed pipe rotates and the cone block rises and falls, reducing material waste and improving efficiency.

[0019] The parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model has a screen frame that slides back and forth in the feed hopper, and the output end of the feed pipe is connected to the screen frame. This allows for screening of incoming materials, reducing the phenomenon of agglomeration of powder or blockage of the conveying pipe by larger solid particles, and improving the performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the feed hopper of a pneumatic conveying device for chemical powder proposed in this utility model;

[0021] Figure 2 This is a front view of a pneumatic conveying device for chemical powders proposed in this utility model;

[0022] Figure 3 This utility model presents a schematic diagram of the structure of a screen frame for a pneumatic conveying device for chemical powder. Figure 1 ;

[0023] Figure 4 This utility model proposes a pneumatic conveying device for chemical powder. Figure 3 Enlarged view of section A;

[0024] Figure 5 This utility model presents a schematic diagram of the structure of a screen frame for a pneumatic conveying device for chemical powder. Figure 2 .

[0025] In the diagram: 1. Base plate; 2. Feed hopper; 201. Discharge pipe; 3. Receiving bin; 301. Discharge pipe; 302. Dust collector; 4. Spray cylinder; 401. Roots blower; 402. Conveying pipe; 5. Top cover; 501. Limiting groove; 502. Feed pipe; 503. First gear; 504. Baffle; 505. Lifting groove; 6. Screen frame; 601. Fixed rod; 602. Limiting block; 603. Rotating plate; 7. Conical block; 701. Support rod; 702. Guide rod; 703. Connecting rod; 704. Fixed plate; 705. Spring; 8. Second gear; 801. Reciprocating screw; 9. Connecting cylinder; 901. Mounting plate; 10. Third gear; 11. First rod; 12. Second rod; 13. Motor. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Example:

[0029] Reference Figures 1-5A pneumatic conveying device for chemical powder includes a base plate 1. A feed hopper 2, a receiving bin 3, and an air supply unit are fixedly mounted on the base plate 1. The feed hopper 2, the receiving bin 3, and the air supply unit are connected by a conveying pipe 401. The air supply unit includes a Roots blower 402. A spray cylinder 4 is fixedly mounted at the output end of the Roots blower 402. The bottom of the feed hopper 2 is connected to the spray cylinder 4 via a discharge pipe 201. A valve is fixedly mounted on the discharge pipe 201. The two ends of the conveying pipe 401 are connected to the output end of the spray cylinder 4 and the receiving bin 3, respectively. In use, positive pressure gas is supplied to the spray cylinder 4 by starting the Roots blower 402. At this time, the gas can flow into the receiving bin 3 along with the conveying pipe 401. During this process, the powder in the feed hopper 2 enters the spray cylinder 4 through the discharge pipe 201 and can enter the receiving bin 3 along with the airflow, realizing the pneumatic conveying of the powder and improving the usage effect. It also includes a screen frame 6 for screening powder, which is slidably disposed in the feed hopper 2. A top cover 5 is detachably disposed on the top of the feed hopper 2. Here, we prefer to fix the top cover 5 to the top of the feed hopper 2 with bolts. A feed pipe 502 is disposed on the top cover 5, through which material can be added to the feed hopper 2. One end of the feed pipe 502 extends into the feed hopper 2 and is connected to the screen frame 6. When adding material, the material can fall into the screen frame 6, be screened by the screen frame 6, and then fall into the feed hopper 2, thereby achieving the screening of powder, reducing the phenomenon of agglomeration or large solid particles in the powder clogging the conveying pipe 402, improving the use effect, and a drive unit for driving the screen frame 6 to slide is fixedly disposed on the top cover 5.

[0030] In use, the feed pipe 502 is connected to the output end of the feed pipe 502 by a sieve frame 6 that slides back and forth inside the feed hopper 2, which can screen the incoming material and reduce the phenomenon of lumps or large solid particles in the powder clogging the conveying pipe 402, thus improving the usage effect. The feed pipe 502 is rotated and mounted on the top cover 5, and a baffle 504 with a funnel-shaped structure is fixedly installed at the output end of the feed pipe 502. A reciprocating conical block 7 is installed on the top cover 5, and a protrusion is fixedly installed on the inner wall of the baffle 504. When the feed pipe 502 rotates and the conical block 7 rises and falls, the lumpy material can be crushed, reducing material waste and improving the usage effect.

[0031] Reference Figure 2 and Figure 5Fixed rods 601 are fixedly installed at the top of both ends of the screen frame 6, and limiting blocks 602 are fixedly installed at the top of both fixed rods 601. A limiting groove 501 is opened on the bottom end face of the top cover 5. The two limiting blocks 602 are slidably connected to the corresponding limiting grooves 501, and the limiting grooves 501 have a T-shaped cross-section to prevent the limiting blocks 602 from falling out of the limiting grooves 501. In use, by fixing the fixed rods 601 on the screen frame 6, fixing the limiting blocks 602 on the fixed rods 601, and opening the limiting grooves 501 on the top cover 5, not only can the screen frame 6 be reliably slid, but the screen frame 6 can also be prevented from falling, thus improving the use effect.

[0032] Reference Figure 2 and Figure 3 The drive unit can use a cylinder or an electric telescopic cylinder to drive the screen frame 6 to slide back and forth. Here, we design the drive unit as follows: a third gear 10 is rotatably installed inside the top cover 5, and a motor 13 for driving the third gear 10 is fixedly installed on the top of the top cover 5. A rotating shaft is coaxially fixed on the third gear 10, and a first rod 11 is fixedly installed on the rotating shaft. A second rod 12 is rotatably installed on the end of the first rod 11 away from the rotating shaft. A rotating plate 603 is fixedly installed on one of the fixed rods 601. The end of the second rod 12 away from the first rod 11 is rotatably connected to the rotating plate 603. In use, by starting the motor 13, the third gear 10 is driven to rotate the rotating shaft and the first rod 11. The screen frame 6 can be driven to slide back and forth along the limiting groove 501 through the second rod 12 to screen the powder and improve the use effect.

[0033] Reference Figure 2 , Figure 3 and Figure 5 A first gear 503 is fixedly installed on the outer wall of the feed pipe 502. The first gear 503 meshes with the third gear 10 through the second gear 8. A baffle 504 with a funnel-shaped structure is fixedly installed at one end of the feed pipe 502 that extends into the feed hopper 2. A conical block 7 matching the baffle 504 is raised and lowered on the top cover 5. The conical block 7 is located below the baffle 504, and the cone shape at the top of the conical block 7 extends into the baffle 504. A protrusion is fixedly installed on the inner wall of the baffle 504. Powder can fall through the channel formed between the inner wall of the baffle 504 and the outer wall of the conical block 7. A lifting part for driving the conical block 7 to rise and fall is provided on the top cover 5. In use, the feed pipe 502 and the baffle 504 are driven to rotate when material is added into the feed hopper 2, and the conical block 7 is driven to rise and fall through the lifting part. This can crush the clumped powder, reduce the difficulty of subsequent processing, reduce material waste, and improve the use effect.

[0034] Reference Figure 5Two guide rods 702 are fixedly installed on the outer wall of the conical block 7. The two guide rods 702 are symmetrically arranged, and the ends of the two guide rods 702 away from the conical block 7 are slidably connected to the top cover 5. In use, by fixing the guide rods 702 on the conical block 7, the reliable lifting and lowering of the conical block 7 can be ensured, thus improving the use effect.

[0035] Reference Figures 2-4 The lifting unit can use a cylinder or an electric telescopic cylinder to drive the conical block 7 to reciprocate and lift. Here, the lifting unit includes a reciprocating screw 801 fixedly mounted on the second gear 8, a lifting groove 505 opened in the top cover 5, and an mounting plate 901 slidably mounted on the lifting groove 505. The mounting plate 901 is rectangular or hexagonal, preferably hexagonal. The mounting plate 901 is threadedly connected to the reciprocating screw 801, and a connecting cylinder 9 for driving the conical block 7 to lift is fixedly mounted on the mounting plate 901. In use, when the second gear 8 drives the reciprocating screw 801 to rotate, the mounting plate 901 and the connecting cylinder 9 can be driven to lift along the lifting groove 505. At this time, the conical block 7 can be driven to lift.

[0036] Reference Figures 2-5 A support rod 701 is fixedly installed on the conical block 7, and a connecting rod 703 is fixedly installed on the top of the support rod 701. The bottom of the connecting cylinder 9 abuts against the top of the support rod 701. A fixing plate 704 is slidably installed inside the connecting cylinder 9. One end of the connecting rod 703 extending into the connecting cylinder 9 is fixedly connected to the fixing plate 704. A spring 705 is sleeved on the connecting rod 703, and the two ends of the spring 705 abut against the fixing plate 704 and the connecting cylinder 9, respectively. In use, by fixing the support rod 701 on the conical block 7, fixing the connecting rod 703 on the support rod 701, and elastically installing the connecting rod 703 inside the connecting cylinder 9 with the spring 705, the conical block 7 and the cover 504 can be elastically matched, reducing the risk of damage.

[0037] Reference Figure 2 A dust collector 302 is fixedly installed inside the receiving chamber 3, and a discharge pipe 301 with a valve is fixedly installed at the bottom of the receiving chamber 3. During use, the dust collector 302 can intercept the powder and facilitate the discharge of gas entering the receiving chamber 3. In addition, the discharge pipe 301 fixedly installed at the bottom of the receiving chamber 3 facilitates the discharge of materials and improves the use effect.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A kind of chemical powder pneumatic conveying equipment, including bottom plate (1), the bottom plate (1) is fixed with feed hopper (2), receiving bin (3) and gas supply unit, feed hopper (2), receiving bin (3) and gas supply unit are communicated by conveying pipeline (401), it is characterized in that, Also include a screen frame (6) for screening the powder, slidingly arranged in the feed hopper (2), the top of the feed hopper (2) is detachably provided with a top cover (5), the top cover (5) is provided with a feed pipe (502), the feed pipe (502) extends to one end in the feed hopper (2) and is connected with the screen frame (6), and the top cover (5) is fixedly provided with a driving portion for driving the screen frame (6) to slide.

2. A device for pneumatic conveying of chemical powders according to claim 1, characterized in that The top of the two ends of the screen frame (6) is fixedly provided with a fixed rod (601), and the top of the two fixed rods (601) is fixedly provided with a limiting block (602). The bottom end face of the top cover (5) is provided with a limiting groove (501), and the two limiting blocks (602) are respectively connected with the corresponding limiting grooves (501) in a sliding manner.

3. A device for pneumatic conveying of chemical powders according to claim 2, characterized in that The driving portion comprises a third gear (10) rotatably arranged in the top cover (5), and the top of the top cover (5) is fixedly provided with a motor (13) for driving the third gear (10) to rotate. The third gear (10) is coaxially fixedly provided with a rotating shaft, the rotating shaft is fixedly provided with a first rod (11), the first rod (11) is rotatably provided with a second rod (12), and one of the fixed rods (601) is fixedly provided with a rotating plate (603). The end of the second rod (12) away from the first rod (11) is rotatably connected with the rotating plate (603).

4. A device for pneumatic conveying of chemical powders according to claim 3, characterized in that The limiting groove (501) is in T-shaped structure.

5. A device for pneumatic conveying of chemical powders according to claim 1, characterized in that, The outer wall of the feed pipe (502) is fixedly provided with a first gear (503), the first gear (503) is engaged with the third gear (10) through a second gear (8), one end of the feed pipe (502) extending into the feed hopper (2) is fixedly provided with a baffle cover (504) in a flared structure, the top cover (5) is provided with a conical block (7) matched with the baffle cover (504), the inner wall of the baffle cover (504) is fixedly provided with a protrusion, the powder falls from the channel formed between the inner wall of the baffle cover (504) and the outer wall of the conical block (7), and the top cover (5) is provided with a lifting portion for driving the conical block (7) to lift.

6. A device for pneumatic conveying of chemical powders according to claim 5, characterized in that The outer wall of the conical block (7) is fixedly provided with two guide rods (702), and the ends of the two guide rods (702) away from the conical block (7) are slidably connected with the top cover (5).

7. A device for pneumatic conveying of chemical powders according to claim 6, characterized in that The lifting portion comprises a reciprocating screw (801) fixedly arranged on the second gear (8), the top cover (5) is provided with a lifting groove (505), the lifting groove (505) is provided with a mounting plate (901) in a sliding manner, the mounting plate (901) is threadedly connected with the reciprocating screw (801), and the mounting plate (901) is fixedly provided with a connecting cylinder (9) for driving the conical block (7) to lift.

8. A device for pneumatic conveying of chemical powders according to claim 7, characterized in that The conical block (7) is fixedly provided with a supporting rod (701), the top of the supporting rod (701) is fixedly provided with a connecting rod (703), a fixed plate (704) is slidably arranged in the connecting cylinder (9), one end of the connecting rod (703) extending into the connecting cylinder (9) is fixedly connected with the fixed plate (704), and springs (705) are sleeved on the connecting rod (703), and the two ends of the springs (705) are respectively abutted against the fixed plate (704) and the connecting cylinder (9).

9. A device for pneumatic conveying of chemical powders according to claim 1, characterized in that, The receiving bin (3) is fixedly provided with a dust remover (302), and the bottom of the receiving bin (3) is fixedly provided with a discharge pipe (301) with a valve.

10. A device for pneumatic conveying of chemical powders according to claim 1, characterized in that The air source supply unit comprises a Roots blower (402), the output end of the Roots blower (402) is fixedly provided with a spraying cylinder (4), the bottom of the feeding hopper (2) is connected with the spraying cylinder (4) through a discharging pipe (201), and the two ends of the conveying pipe (401) are respectively connected with the output end of the spraying cylinder (4) and the receiving bin (3).

Images