Powder suspension closed conveying dust removal equipment in emulsion explosive production process

Abstract

The utility model relates to the field of emulsion explosive production equipment, and discloses powder suspension closed conveying dust removal equipment in the emulsion explosive production process, which comprises a conveying pipe, a feeding hopper is fixedly connected to the top of the conveying pipe, a protective cover is hinged to the top of the feeding hopper, and an extrusion mechanism is arranged in the feeding hopper. And the extrusion mechanism comprises a stepping motor, the stepping motor is fixedly installed at the top of the conveying pipe, the top of an output shaft of the stepping motor is fixedly connected with a rotating shaft, the circumferential surface of the rotating shaft is fixedly connected with a cam, the right side of the cam is in contact with a pressing plate, and the right side of the pressing plate is fixedly connected with a sleeve. According to the utility model, the extrusion mechanism is arranged, so that produced powder particles can be extruded and crushed by the cutting blade when passing through the feeding hopper, the powder produced by emulsion explosives is loosened, the caking phenomenon of the powder can be reduced to a certain extent, and the subsequent powder conveying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of emulsion explosive production equipment, in particular to powder suspension, closed conveying and dust removal equipment in the emulsion explosive production process. Background Art

[0002] Powdered emulsion explosive is a new type of industrial explosive developed on the basis of emulsion explosive. It combines the dual advantages of emulsion explosive and powdered explosive. Since its launch, it has been deeply welcomed by manufacturers and users and has been widely used.

[0003] In the prior art, during the production of explosives, the solid powdered emulsion explosive particles formed are very fine. After dust removal, some particles or dust containing explosives are directly discharged into the atmosphere, causing environmental pollution and bringing unsafe factors to production and life. At the same time, during the production of emulsion explosives, powder agglomeration occurs, which affects the normal progress of subsequent powder transportation and processing steps and reduces the efficiency of transportation. Therefore, a powder hanging and closed conveying and dust removal device in the production process of emulsion explosives is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a dust removal device for powder suspension and closed conveying in the production process of emulsion explosives, aiming to improve the problem in the prior art that "powder agglomeration in the production process of emulsion explosives reduces the efficiency of conveying".

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a powder suspended and closed conveying and dust removal device in the production process of emulsion explosives, comprising a conveying pipe, the top of the conveying pipe is fixedly connected to a feed hopper, the top of the feed hopper is hinged with a protective cover, an extrusion mechanism is provided inside the feed hopper, the extrusion mechanism comprises a stepping motor, the stepping motor is fixedly installed on the top of the conveying pipe, the top of the output shaft of the stepping motor is fixedly connected to a rotating shaft, the circumferential surface of the rotating shaft is fixedly connected to a cam, the right side of the cam contacts a pressure plate, the right side of the pressure plate is fixedly connected to a sleeve, the sleeve passes through and is slidably installed on the inner wall of the feed hopper, the circumferential surface of the sleeve is sleeved with a spring, the right end of the sleeve contacts a metal ring, the surface of the metal ring is fixedly connected to a cutting blade, the inner wall of the sleeve is slidably connected to a guide rod, the right side of the guide rod is fixedly installed on the right side of the inner wall of the feed hopper, and a dust removal mechanism is provided inside the conveying pipe.

[0006] As a further description of the above technical solution:

[0007] The number of the cutting blades is set to be multiple, and the multiple cutting blades are arranged in a ring shape with equal intervals on the surface of the metal ring.

[0008] As a further description of the above technical solution:

[0009] The right side of the metal ring is fixedly connected to the outer wall of the guide rod, and the left side of the metal ring is slidably connected to the outer wall of the guide rod.

[0010] As a further description of the above technical solution:

[0011] The left side of the spring contacts the right side of the pressing plate, and the right side of the spring contacts the left side of the outer wall of the hopper.

[0012] As a further description of the above technical solution:

[0013] The dust removal mechanism includes a servo motor, and the servo motor is fixedly installed on the left side of the conveying pipe.

[0014] As a further description of the above technical solution:

[0015] The dust removal mechanism further comprises a rotating rod, which is fixedly mounted on the right side of the output shaft of the servo motor, and a spiral conveying blade is fixedly connected to the circumferential surface of the rotating rod.

[0016] As a further description of the above technical solution:

[0017] The dust removal mechanism further comprises a sieve plate, which is arranged at the middle of the bottom of the conveying pipe.

[0018] As a further description of the above technical solution:

[0019] The dust removal mechanism also includes a collecting box, which is fixedly installed at the bottom of the conveying pipe. A collecting box is slidably connected to the inner wall of the collecting box, and a discharge pipe is fixedly connected to the left side of the bottom of the conveying pipe.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the present invention, by providing an extrusion mechanism, the finished powder particles are squeezed and crushed by the cutting blades when passing through the feed hopper, thereby loosening the powder produced by the emulsion explosive and reducing the agglomeration of the powder to a certain extent, thereby improving the efficiency of subsequent powder transportation.

[0022] 2. In the utility model, by setting up a dust removal mechanism, the purity of the powder during transportation is ensured, the mixing of impurities and pollutants is reduced, the product quality is improved, and the dust in the production process is collected and processed in time, reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0024] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the extrusion mechanism in the present utility model;

[0025] Figure 3 It is a schematic diagram of the three-dimensional exploded structure of the extrusion mechanism part of the utility model;

[0026] Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the dust removal mechanism in the present invention.

[0027] Legend:

[0028] 1. Conveying pipe; 2. Feed hopper; 3. Protective cover; 4. Stepper motor; 5. Rotating shaft; 6. Cam; 7. Pressing plate; 8. Sleeve; 9. Spring; 10. Metal ring; 11. Cutting blade; 12. Guide rod; 13. Servo motor; 14. Rotating rod; 15. Spiral conveying blade; 16. Screen plate; 17. Collection box; 18. Collection box; 19. Feeding pipe. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Reference Figure 1 、 Figure 2 The utility model provides an embodiment of a powder suspended and enclosed conveying and dust removal device in the production process of emulsion explosives, comprising a conveying pipe 1 arranged in a horizontal state, the conveying pipe 1 can be suspended in the air by a boom to support the conveying pipe 1, a hopper 2 for feeding powder into the conveying pipe 1 is fixedly connected to the top of the conveying pipe 1, a protective cover 3 is hinged on the top of the hopper 2, and a handle for conveniently opening the protective cover 3 is provided on the top of the protective cover 3. By providing the protective cover 3, the flying and overflow of powder is reduced to prevent it from spreading into the production environment, thereby avoiding the fire caused by dust accumulation. In case of disaster or explosion, an extrusion mechanism is provided inside the hopper 2, which includes a stepper motor 4. The stepper motor 4 can accurately control the rotation angle of its output shaft to improve the accuracy of control. The stepper motor 4 is set to a low-speed motor, which is convenient for cooperating with the spring 9 to limit the deformation of the metal ring 10 within the elastic limit, thereby improving the service life of the metal ring 10. The stepper motor 4 is fixedly installed on the top of the conveying pipe 1, and the top of the output shaft of the stepper motor 4 is fixedly connected to a rotating shaft 5 set in a vertical state. The circumferential surface of the rotating shaft 5 is fixedly connected to a cam 6, and the surface of the cam 6 is provided with a protruding end.

[0031] Reference Figure 2、 Figure 3 The right side of the cam 6 contacts with a pressure plate 7, and the right side of the pressure plate 7 is fixedly connected with a sleeve 8. The sleeve 8 penetrates and is slidably installed on the inner wall of the feed hopper 2. The sliding direction of the sleeve 8 is left and right. The circumferential surface of the sleeve 8 is sleeved with a spring 9. The right end of the sleeve 8 contacts with a metal ring 10 initially set to a circular ring shape. The metal ring 10 has a certain elasticity and can be deformed under the action of external force. The surface of the metal ring 10 is fixedly connected with a cutting blade 11 for squeezing and crushing the agglomerated powder particles, which alleviates the agglomeration of powder after the production of emulsion explosives and facilitates subsequent processing. A guide rod 12 is slidably connected to the inner wall of the sleeve 8. The central axis of the guide rod 12 coincides with the central axis of the sleeve 8. The right side of the guide rod 12 is fixedly installed on the right side of the inner wall of the feed hopper 2, and a dust removal mechanism is provided inside the conveying pipe 1.

[0032] Reference Figure 1 - Figure 3 The number of cutting blades 11 is set to be multiple, and multiple cutting blades 11 are arranged in a ring shape with equal intervals on the surface of the metal ring 10. The number of cutting blades 11 can be set according to actual needs, and 8-12 cutting blades 11 are preferred. The displacement directions of the cutting blades 11 at different positions are different, which can improve the effect of extruding and crushing the agglomerated powder particles. The right side of the metal ring 10 is fixedly connected to the outer wall of the guide rod 12, and the left side of the metal ring 10 is slidingly connected to the outer wall of the guide rod 12. When the sleeve 8 moves to the right to squeeze the metal ring 10, the metal ring 10 is deformed, and the guide rod 12 guides the deformation direction of the metal ring 10. The left side of the spring 9 contacts the right side of the pressure plate 7, and the right side of the spring 9 contacts the left side of the outer wall of the hopper 2. By setting the spring 9, an elastic force toward the left is applied to the pressure plate 7.

[0033] Reference Figure 4 The dust removal mechanism includes a servo motor 13, which can accurately control the rotation angle of its output shaft. The servo motor 13 is fixedly installed on the left side of the conveying pipe 1. The dust removal mechanism also includes a rotating rod 14 arranged in a vertical state. The rotating rod 14 is fixedly installed on the right side of the output shaft of the servo motor 13. The circumferential surface of the rotating rod 14 is fixedly connected with a spiral conveying blade 15 that can convey the powder particles.

[0034] Reference Figure 4The dust removal mechanism also includes a sieve plate 16. The surface of the sieve plate 16 is provided with sieve holes, which can filter out impurities and dust contained in the powder particles to improve the quality of the powder. The sieve plate 16 is arranged in the middle of the bottom of the conveying pipe 1. The dust removal mechanism also includes a collecting box 17. The collecting box 17 is fixedly installed at the bottom of the conveying pipe 1. A collecting box 18 for collecting powder particles is slidably connected to the inner wall of the collecting box 17. A handle for conveniently pulling the collecting box 18 is provided on the front of the collecting box 18. A discharge pipe 19 for discharging dust and impurities is fixedly connected to the left side of the bottom of the conveying pipe 1.

[0035] Working principle: When in use, the powder produced after the production of emulsion explosives enters the feed hopper 2, so that the powder fills the entire feed hopper 2, and then the protective cover 3 is closed to prevent dust from causing more pollution to the outside air, and the power of the stepper motor 4 is started. The stepper motor 4 works to make the rotating shaft 5 rotate, and the rotation of the rotating shaft 5 drives the cam 6 to rotate. When the protruding end of the cam 6 moves to the rightmost end, the pressure plate 7 overcomes the elastic force of the spring 9 and moves to the rightmost end. When the protruding end of the cam 6 moves to the leftmost end, the pressure plate 7 moves to the leftmost end under the elastic force of the spring 9. As the stepper motor 4 keeps working, the pressure plate 7 drives the sleeve 8 to make a linear reciprocating motion in the left and right directions, thereby causing the metal ring 10 to continuously deform, so that the cutting blade 11 on the metal ring 10 keeps shifting, squeezing and crushing the powder in the feed hopper 2, alleviating the agglomeration of the powder to a certain extent, and facilitating the subsequent conveying process of the powder.

[0036] The crushed powder particles enter the right side of the interior of the conveying pipe 1, and the power supply of the servo motor 13 is started. The servo motor 13 works to rotate the rotating rod 14, and the rotation of the rotating rod 14 drives the spiral conveying blade 15 to rotate, thereby conveying the powder particles on the right side of the interior of the conveying pipe 1 to the left side of the interior of the conveying pipe 1. In this process, the powder particles will pass through the sieve plate 16, and then the powder will pass through the sieve plate 16 into the interior of the collecting box 17, and finally fall into the collecting box 18. The impurities and dust contained in the powder will move to the left side of the interior of the conveying pipe 1 under the action of the spiral conveying blade 15 and be discharged from the discharge pipe 19.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dust removal device for powder suspension and closed conveying during the production of emulsion explosives, comprising a conveying pipe (1), characterized in that: The top of the conveying pipe (1) is fixedly connected to a feed hopper (2), the top of the feed hopper (2) is hinged with a protective cover (3), an extrusion mechanism is provided inside the feed hopper (2), and the extrusion mechanism includes a stepper motor (4), the stepper motor (4) is fixedly installed on the top of the conveying pipe (1), the top of the output shaft of the stepper motor (4) is fixedly connected to a rotating shaft (5), the circumferential surface of the rotating shaft (5) is fixedly connected to a cam (6), the right side of the cam (6) contacts a pressure plate (7), and the pressure plate (7) is fixedly connected to the top of the output shaft of the stepper motor (4). A sleeve (8) is fixedly connected to the right side, and the sleeve (8) passes through and is slidably mounted on the inner wall of the feed hopper (2). A spring (9) is sleeved on the circumferential surface of the sleeve (8). The right end of the sleeve (8) contacts a metal ring (10), and a cutting blade (11) is fixedly connected to the surface of the metal ring (10). A guide rod (12) is slidably connected to the inner wall of the sleeve (8), and the right side of the guide rod (12) is fixedly mounted on the right side of the inner wall of the feed hopper (2). A dust removal mechanism is provided inside the conveying pipe (1).

2. The dust removal equipment for powder suspension and closed conveying in the emulsion explosive production process according to claim 1, characterized in that: The number of the cutting blades (11) is set to be multiple, and the multiple cutting blades (11) are arranged in a ring shape at equal intervals on the surface of the metal ring (10).

3. The dust removal equipment for powder suspension and closed conveying in the emulsion explosive production process according to claim 1, characterized in that: The right side of the metal ring (10) is fixedly connected to the outer wall of the guide rod (12), and the left side of the metal ring (10) is slidably connected to the outer wall of the guide rod (12).

4. The dust removal equipment for powder suspension and closed conveying in the emulsion explosive production process according to claim 1, characterized in that: The left side of the spring (9) contacts the right side of the pressure plate (7), and the right side of the spring (9) contacts the left side of the outer wall of the hopper (2).

5. The dust removal equipment for powder suspension and closed conveying in the emulsion explosive production process according to claim 1, characterized in that: The dust removal mechanism comprises a servo motor (13), and the servo motor (13) is fixedly mounted on the left side of the conveying pipe (1).

6. The dust removal equipment for powder suspension and closed conveying in the emulsion explosive production process according to claim 5, characterized in that: The dust removal mechanism further comprises a rotating rod (14), the rotating rod (14) being fixedly mounted on the right side of the output shaft of the servo motor (13), and a spiral conveying blade (15) being fixedly connected to the circumferential surface of the rotating rod (14).

7. The dust removal equipment for powder suspension and closed conveying in the emulsion explosive production process according to claim 6, characterized in that: The dust removal mechanism further comprises a sieve plate (16), and the sieve plate (16) is arranged in the middle of the bottom of the conveying pipe (1).

8. The dust removal equipment for powder suspension and closed conveying in the emulsion explosive production process according to claim 7, characterized in that: The dust removal mechanism further comprises a collecting box (17), the collecting box (17) being fixedly mounted on the bottom of the conveying pipe (1), a collecting box (18) being slidably connected to the inner wall of the collecting box (17), and a discharge pipe (19) being fixedly connected to the left side of the bottom of the conveying pipe (1).

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