Powder conveying device

Abstract

The invention relates to the technical field of powder conveying, in particular to a powder conveying device which comprises a conveying pipe, the surface of the conveying pipe communicates with a storage box, a round rod is arranged below the conveying pipe, and the right end of the round rod is fixedly connected with a power source; the inner diameter adjusting assembly comprises an elastic cushion fixedly installed on the inner wall of the conveying pipe, a plurality of pressing strips are arranged between the elastic cushion and the conveying pipe, guide rods are fixedly installed on the surfaces of the pressing strips, two protruding rods are symmetrically installed on the surfaces of the guide rods, and the surfaces of the guide rods are sleeved with sleeve rods. The upper end of the sleeve rod penetrates through the interior of the sliding groove and is fixedly connected with a moving ring, and one side of the moving ring is fixedly connected with the left end of the round rod. Through cooperative use of all parts, when the specification of powder is enlarged, the inner diameter of the conveying pipe can be automatically adjusted, the driving force of airflow is increased, the purpose of saving energy is achieved, the vibration frequency can be increased, accumulation can be reduced, and normal conveying of the powder is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of powder conveying, in particular to a powder conveying device. BACKGROUND

[0002] The powder conveying device is a device for conveying powder materials from one place to another by using the power of airflow, which is widely used in chemical industry, pharmaceutical industry, food industry, metallurgy industry, building material industry and other industries. The powder conveying device mainly comprises a feeding device, a conveying pipeline, an airflow generating device (such as a compressor, a vacuum pump, etc.), a separating device and a collecting device, and the powder conveying principle is to use the power of airflow to push the materials to move in the pipeline through the closed pipeline.

[0003] However, in the process of conveying powder, when the particle size of the powder increases, the mass of the powder increases, and the required airflow driving force also increases, so it is necessary to increase the airflow speed to provide sufficient driving force, and thus it is necessary to increase the output power of the airflow generating device. However, the increase of the output power directly leads to the increase of energy consumption, resulting in waste of energy. SUMMARY

[0004] The present application aims to provide a powder conveying device to solve the problem of waste of energy caused by the increase of the output power of the airflow generating device for conveying the powder with large particles in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a powder conveying device comprising a material conveying pipe, a surface of the material conveying pipe being communicated with a material storage tank, further comprising a round rod arranged below the material conveying pipe, and a power source fixedly connected to a right end of the round rod. and an inner diameter adjusting assembly for adjusting the inner diameter of the material conveying pipe, the inner diameter adjusting assembly comprising an elastic pad fixedly installed on an inner wall of the material conveying pipe, a plurality of pressing strips arranged between the elastic pad and the material conveying pipe, a guide rod fixedly installed on a surface of the pressing strip, two groups of protruding rods symmetrically installed on a surface of the guide rod, a sleeve rod sleeved on the surface of the guide rod, a moving ring fixedly connected to an upper end of the sleeve rod and penetrating through an inner portion of a sliding groove, and the moving ring being fixedly connected to a left end of the round rod on one side.

[0006] Further, a plurality of sliding grooves are equidistantly arranged on the surface of the material conveying pipe, and two groups of inclined grooves are symmetrically arranged on an inner wall of the sliding groove.

[0007] Further, the plurality of pressing strips are in an arc-shaped structure, and a sliding rod is slidably connected between the plurality of pressing strips.

[0008] Further, the protruding rod is arranged in an inner portion of a through groove symmetrically arranged on the surface of the sleeve rod, and the protruding rod is slidably connected to the sleeve rod, and an end portion of the protruding rod is arranged in the inclined groove. Further, the protruding rod is arranged in an inner portion of a through groove symmetrically arranged on the surface of the sleeve rod, and the protruding rod is slidably connected to the sleeve rod, and an end portion of the protruding rod is arranged in the inclined groove.

[0009] Further, the shock assembly for vibrating the surface of the material conveying pipe is further included, the shock assembly includes a sleeve ring sleeved on the surface of the material conveying pipe, a plurality of sets of extrusion grooves are equidistantly arranged on the inner wall of the sleeve ring, a first tooth and a second tooth are arranged on the surface of the sleeve ring, a hollow ring is arranged between the sleeve ring and the circular rod, a plurality of sets of circular holes are equidistantly arranged on the inner wall of the hollow ring, a plurality of sets of abutting plates are arranged in the hollow ring, a moving rod is fixedly installed on the surface of the abutting plate, a driving tooth is engagedly connected to the surface of the second tooth, and a driving source is arranged on one side of the driving tooth.

[0010] Further, the hollow ring is sleeved on the surface of the circular rod, and a plurality of sets of the circular holes are correspondingly arranged with a plurality of sets of the extrusion grooves.

[0011] Further, the abutting plate is in an arc structure, and the abutting plate is elastically connected to the inner wall of the hollow ring through a spring.

[0012] Further, the end of the moving rod is in a hemispherical structure, the end of the moving rod penetrates through the circular hole and enters the inside of the extrusion groove, and the moving rod is extrudedly matched with the extrusion groove.

[0013] Further, the driving tooth is sleeved on the surface of the circular rod and is rotationally connected with the circular rod, the driving tooth is combined by a set of pinions and a set of gears, the pinion is engagedly connected with the first tooth, and the gear is engagedly connected with the second tooth.

[0014] Compared with the known prior art, the technical scheme provided by the present application has the following beneficial effects: Firstly, the circular rod, the elastic pad and the sleeve rod and other mutually matched parts are arranged, when the powder particles in the storage box become large, the circular rod is pulled to the right side, the sleeve rod is driven to slide in the sliding groove by the moving ring, the guide rod drives the pressing strip to move to the center of the material conveying pipe by the sliding cooperation between the convex rod and the inclined groove, the elastic pad is deformed, the inner diameter of the material conveying pipe is changed, the airflow speed is increased when the airflow passes through the deformed elastic pad, sufficient driving force is provided, and the purpose of saving energy is achieved.

[0015] Secondly, the sleeve ring, the abutting plate and the driving tooth and other mutually matched parts are arranged, when the circular rod is pulled to the right side, the initial state in which the pinion is engaged with the first tooth is separated, the gear is engaged with the second tooth, the rotation speed of the sleeve ring is increased while the inner diameter of the material conveying pipe is adjusted, the contact frequency of the extrusion groove and the moving rod is increased, the contact frequency of the abutting plate and the surface of the material conveying pipe is increased, the vibration frequency of the surface of the material conveying pipe is increased, the phenomenon of dust blockage is reduced, and the normal conveying of the powder is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings belong to the protection scope of the present application.

[0017] Figure 1 It is a schematic diagram of the whole application; Figure 2 It is a schematic diagram of the cross-sectional structure of the material conveying pipe of the application; Figure 3 It is a schematic diagram of the structure of the material conveying pipe of the application; Figure 2 It is a schematic diagram of the structure of the material conveying pipe of the application; Figure 4 It is a schematic diagram of the whole structure of the inner diameter adjusting assembly of the application; Figure 5 It is a schematic diagram of the structure of the material conveying pipe of the application; Figure 4 It is a schematic diagram of the structure of the material conveying pipe of the application; Figure 6 It is a schematic diagram of the plane structure of the inner diameter adjusting assembly of the application; Figure 7 It is a schematic diagram of the whole structure of the oscillation assembly of the application; Figure 8 It is a schematic diagram of the plane structure of the oscillation assembly of the application; Figure 9 It is a schematic diagram of the structure of the material conveying pipe of the application; Figure 8 It is a schematic diagram of the structure of the material conveying pipe of the application.

[0018] In the drawings: 1, material conveying pipe; 101, chute; 102, inclined chute; 2, material storage box; 3, round rod; 4, inner diameter adjusting assembly; 401, elastic pad; 402, pressing strip; 4021, sliding rod; 403, guide rod; 404, protruding rod; 405, sleeve rod; 406, moving ring; 5, oscillation assembly; 501, sleeve ring; 5011, extrusion groove; 502, first tooth; 503, second tooth; 504, hollow ring; 505, fitting plate; 506, moving rod; 507, driving tooth. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0020] The present application will be further described below in combination with the embodiments.

[0021] Example: A powder conveying device, such as Figures 1-9 As shown, it includes a conveying pipe 1, which can be used to convey powder. It is worth noting that the left end of the conveying pipe 1 is connected to an airflow generating device, and the generated airflow flows from left to right inside the conveying pipe 1. Multiple sets of sliding grooves 101 are equidistantly opened on the surface of the conveying pipe 1. By opening the sliding grooves 101, it can play a guiding and limiting role. Two sets of inclined grooves 102 are symmetrically opened on the inner wall of the sliding grooves 101. By setting the inclined grooves 102, it can drive the parts to move up and down, and at the same time play a guiding and limiting role.

[0022] The surface of the conveying pipe 1 is connected to a storage tank 2 for storing the conveyed powder. It is worth noting that the storage tank 2 is equipped with a sensor for detecting the size of the powder particles and can send corresponding electrical signals according to the size of the powder particles. It is worth noting that the sensor is an existing device and is not shown in the figure. A dust sensor based on the principle of light scattering or a laser particle size analyzer sensor can be selected.

[0023] It also includes a round rod 3 located below the conveying pipe 1. A power source is fixedly connected to the right end of the round rod 3. By setting the round rod 3, it can play a pulling role. The power source is an existing device, not shown in the figure. A telescopic cylinder or other device with a stroke can be selected. It is worth noting that the power source is electrically connected to the sensor that detects the size of the powder particles so as to receive the electrical signals sent by the sensor and make corresponding actions.

[0024] Combined with appendix Figure 1 - Appendix Figure 6 The inner diameter adjustment component 4 is used to adjust the inner diameter of the conveying pipe 1. When the size of the powder particles to be conveyed increases, the inner diameter of the conveying pipe 1 can be adjusted accordingly, so that the airflow generated by the airflow generator can generate greater driving force to meet the conveying requirements and achieve the purpose of saving energy. The inner diameter adjustment component 4 includes an elastic pad 401 fixedly installed on the inner wall of the conveying pipe 1. By setting the elastic pad 401, the inner diameter of the conveying pipe 1 can be adjusted according to its deformation, thereby changing the driving force of the airflow.

[0025] Multiple pressure strips 402 are provided between the elastic pad 401 and the conveying pipe 1. The multiple pressure strips 402 are arc-shaped. By setting the pressure strips 402, the elastic pad 401 can be deformed by moving left and right, thereby changing the internal diameter of the conveying pipe 1. It is worth noting that the multiple pressure strips 402 can be combined to form a circular structure. When the multiple pressure strips 402 form a circular structure, the elastic pad 401 will be stretched to its final state. At the same time, the internal diameter of the conveying pipe 1 will become the smallest, and the driving force generated by the airflow will reach the maximum. The sliding rod 4021 is in an arc structure and can be deformed. By arranging the sliding rod 4021, two groups of the plurality of pressing strips 402 can be connected, and a blocking effect can be formed, so that when the plurality of pressing strips 402 form a circular structure, the two groups of pressing strips 402 close to each other do not clamp and damage the elastic pad 401. The surface of the pressing strip 402 is fixedly installed with a guide rod 403. The guide rod 403 can be used for guiding and driving the pressing strip 402 to lift. The surface of the guide rod 403 is symmetrically installed with two groups of convex rods 404. The convex rods 404 can be used for limiting the guide rod 403. The end of the convex rod 404 is arranged in the inclined groove 102. The guide rod 403 can be driven to lift the pressing strip 402 under the action of the inclined groove 102.

[0026] The surface of the guide rod 403 is sleeved with a sleeve rod 405. The convex rod 404 is arranged in the through groove symmetrically formed on the surface of the sleeve rod 405, and the convex rod 404 is in sliding fit with the sleeve rod 405. The sleeve rod 405 is arranged, and the through groove is formed on the surface of the sleeve rod 405. The height of the guide rod 403 can be controlled, and the guide rod 403 can be limited to avoid deviation when the elastic pad 401 is deformed. The upper end of the sleeve rod 405 penetrates through the inside of the sliding groove 101 and is fixedly connected with a moving ring 406. The sleeve rod 405 can be driven to move left and right through the moving ring 406, so as to drive the convex rod 404 to move synchronously in the inclined groove 102, and the lifting of the guide rod 403 and the pressing strip 402 can be controlled. One side of the moving ring 406 is fixedly connected with the left end of the circular rod 3. When the power source receives an electric signal and moves, the moving ring 406 can be driven to move synchronously through the circular rod 3.

[0027] The accompanying drawings are combined with the Figure 1 The accompanying drawings are combined with the Figure 9 The vibration assembly 5 is arranged on the surface of the conveying pipe 1 to avoid that the conveyed powder is adhered to the inner wall of the conveying pipe 1, and the conveying pipe 1 is blocked. The vibration assembly 5 comprises a sleeve ring 501 arranged on the surface of the conveying pipe 1. The sleeve ring 501 is rotatably installed on the surface of the conveying pipe 1, and the sleeve ring 501 is in a flat T shape. A plurality of extrusion grooves 5011 are equidistantly arranged on the inner wall of the sleeve ring 501. The extrusion grooves 5011 can be used for extruding. A first tooth 502 and a second tooth 503 are arranged on the surface of the sleeve ring 501. The first tooth 502 and the second tooth 503 can be matched with other parts to drive the sleeve ring 501 to rotate. Wherein, the annular ring 501 and the hollow ring 504 are provided between the circular rod 3, and the inner wall of the hollow ring 504 is equidistantly provided with a plurality of groups of round holes, the hollow ring 504 is sleeved on the surface of the circular rod 3, the hollow ring 504 is rotatably connected with the annular ring 501, and can play a positioning role on the annular ring 501; and the round holes provided on the surface of the hollow ring 504 can play a limiting role; the plurality of groups of round holes and the plurality of groups of extrusion grooves 5011 are correspondingly arranged.

[0028] Wherein, the inside of the hollow ring 504 is provided with a plurality of groups of abutting plates 505, the abutting plate 505 is an arc-shaped structure, and the abutting plate 505 is elastically connected with the inner wall of the hollow ring 504 through a spring. By setting the abutting plate 505, the surface of the conveying pipe 1 can be contacted and collided with the conveying pipe 1 to generate vibration. It is worth noting that by setting the abutting plate 505 as an arc-shaped structure, the contact area with the conveying pipe 1 can be increased, the vibration effect can be increased, and the abrasion between the abutting plate 505 and the conveying pipe 1 can be reduced. The surface of the abutting plate 505 is fixedly provided with a moving rod 506, the end of the moving rod 506 is a hemispherical structure, the moving rod 506 is provided, and the abutting plate 505 can be driven to move. The end of the moving rod 506 penetrates through the round hole and enters the inside of the extrusion groove 5011, and the moving rod 506 is extruded and matched with the extrusion groove 5011. Through the cooperation between the moving rod 506 and the extrusion groove 5011, when the annular ring 501 rotates, the moving rod 506 can be extruded by the extrusion groove 5011, so that the moving rod 506 drives the abutting plate 505 to move in the circular direction of the conveying pipe 1, collides with the surface of the conveying pipe 1, makes the conveying pipe 1 vibrate, shakes the powder adhered to the inner wall of the conveying pipe 1, and avoids blockage.

[0029] Wherein, the surface of the second tooth 503 is engagedly connected with a driving tooth 507. By setting the driving tooth 507, the first tooth 502 and the second tooth 503 can be engaged, the annular ring 501 can be driven to rotate, and the rotation speed of the annular ring 501 can be changed. One side of the driving tooth 507 is provided with a driving source, which is a prior art. In the figure, a motor and a driving tooth fixedly connected with the output shaft of the motor can be selected, so as to drive the driving tooth 507 to rotate. The driving tooth 507 is sleeved on the surface of the circular rod 3 and is rotatably connected with the circular rod 3. The driving tooth 507 is composed of a group of pinions and a group of gear wheels, the pinions are engagedly connected with the first tooth 502, and the gear wheels are engagedly connected with the second tooth 503.

[0030] Specifically, when the powder is conveyed, the powder is first poured into the inside of the storage box 2, and then the specifications of the powder are detected by the sensor. If the powder specifications become larger, the detection result is sent to the power source in the form of an electrical signal, so that the power source starts to drive the circular rod 3 to move to the right side. When the round rod 3 moves right, the moving ring 406 will move right synchronously, and then the sleeve rod 405 fixedly connected with the moving ring 406 will slide in the sliding groove 101, and the guide rod 403 will move the pressing strip 402 to the center of the conveying pipe 1 under the cooperation of the convex rod 404 and the inclined groove 102, and start to stretch the elastic pad 401, so that the elastic pad 401 is deformed, and then the inner diameter of the conveying pipe 1 is reduced, so that the driving force of the airflow is increased, and the powder with large specifications is conveyed in the conveying pipe 1, so that the purpose of saving energy is achieved. When the round rod 3 moves, the driving teeth 507 will move right synchronously, and then the pinion will be separated from the first tooth 502, and the gear will be engaged with the second tooth 503 to drive the sleeve ring 501 to rotate, and under the action of the driving source, the rotation speed of the sleeve ring 501 is increased, the frequency of the extrusion groove 5011 and the moving rod 506 is increased, and then the frequency of the moving rod 506 driving the abutting plate 505 to collide with the surface of the conveying pipe 1 is increased, the vibration effect of the conveying pipe 1 is increased, the powder is prevented from adhering to the inner wall of the conveying pipe 1 to cause blockage, and the normal conveying of the powder is ensured.

[0031] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A powder conveying device comprising a conveying pipe (1), the surface of which is communicated with a storage tank (2), characterized in that, Further including, the lower part of the feeding pipe (1) is provided with a round rod (3), the right end of the round rod (3) is fixedly connected with a power source; And an inner diameter adjusting assembly (4) for adjusting the inner diameter of the feeding pipe (1), the inner diameter adjusting assembly (4) comprises an elastic pad (401) fixedly installed on the inner wall of the feeding pipe (1), a plurality of pressing strips (402) are arranged between the elastic pad (401) and the feeding pipe (1), a guide rod (403) is fixedly installed on the surface of the pressing strip (402), two groups of convex rods (404) are symmetrically installed on the surface of the guide rod (403), a sleeve rod (405) is sleeved on the surface of the guide rod (403), the upper end of the sleeve rod (405) penetrates through the inside of the sliding groove (101) and is fixedly connected with a moving ring (406), and one side of the moving ring (406) is fixedly connected with the left end of the round rod (3).

2. A powder delivery device according to claim 1, wherein: A plurality of sliding grooves (101) are equidistantly arranged on the surface of the feeding pipe (1), and two groups of inclined grooves (102) are symmetrically arranged on the inner wall of the sliding groove (101).

3. The powder delivery device of claim 1, wherein: A plurality of the pressing strips (402) are in arc-shaped structure, and a sliding rod (4021) is slidably connected between a plurality of the pressing strips (402).

4. The powder delivery device of claim 2, wherein: The convex rod (404) is arranged in the through groove symmetrically arranged on the surface of the sleeve rod (405), and the convex rod (404) is slidably connected with the sleeve rod (405), and the end of the convex rod (404) is arranged in the inclined groove (102).

5. The powder delivery device of claim 1, wherein: Further including a vibration assembly (5) for vibrating the surface of the feeding pipe (1), the vibration assembly (5) comprises a sleeve ring (501) sleeved on the surface of the feeding pipe (1), a plurality of extrusion grooves (5011) are equidistantly arranged on the inner wall of the sleeve ring (501), a first tooth (502) and a second tooth (503) are arranged on the surface of the sleeve ring (501), a hollow ring (504) is arranged between the sleeve ring (501) and the round rod (3), a plurality of circular holes are equidistantly arranged on the inner wall of the hollow ring (504), a plurality of abutting plates (505) are arranged in the hollow ring (504), a moving rod (506) is fixedly installed on the surface of the abutting plate (505), the surface of the second tooth (503) is engagedly connected with a driving tooth (507), and one side of the driving tooth (507) is provided with a driving source.

6. A powder delivery device according to claim 5, wherein: The hollow ring (504) is sleeved on the surface of the round rod (3), and a plurality of the circular holes are correspondingly arranged with a plurality of the extrusion grooves (5011).

7. A powder delivery device according to claim 5, wherein: The abutting plate (505) is in arc-shaped structure, and the abutting plate (505) is elastically connected with the inner wall of the hollow ring (504) through a spring.

8. The powder delivery device of claim 5, wherein: The end of the moving rod (506) is in hemispherical structure, the end of the moving rod (506) penetrates through the circular hole and enters the inside of the extrusion groove (5011), and the moving rod (506) is extrudedly connected with the extrusion groove (5011).

9. The powder delivery device of claim 6, wherein: The driving tooth (507) is sleeved on the surface of the round rod (3) and is rotationally connected with the round rod (3), the driving tooth (507) is combined by a set of pinions and a set of gear wheels, the pinions are in meshing connection with the first tooth (502), and the gear wheels are in meshing connection with the second tooth (503).

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