Dust falling device for chemical production safety engineering

Abstract

The utility model provides a dust falling device for chemical production safety engineering, which relates to the technical field of dust falling devices and comprises a bottom plate, a conveying device body is arranged at the top of the bottom plate, a dust falling component is arranged at the top of the bottom plate close to the center, and the dust falling component comprises two fixing frames. A lower communication bin is fixed between the outer surfaces of the two fixing frames. According to the device, when urea needs to be crushed, firstly, large-particle urea is crushed through the crusher body, the crushed urea is conveyed to the top of the conveying device body, then small-particle dust on the surface of the urea can be completely absorbed and collected in a negative pressure mode, and after the dust on the surface of the urea is cleared away, the urea is conveyed to the top of the conveying device body. The problems that in the prior art, the dust removal effect of dust removal equipment used after the urea is smashed is low, and the practicability of the dust removal device for the chemical production safety engineering is reduced are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust falling device technical field especially relates to a dust falling device for chemical production safety engineering. BACKGROUND

[0002] Harmful dust and particulate matter are often generated in the process of chemical production, which can easily affect the respiratory system and overall health of employees. Using a dust removal device can effectively reduce the concentration of dust in the air, protect employees from harmful substances, and play an important role in chemical production safety engineering. The main purpose is to reduce dust and particulate matter emissions, thereby protecting worker health, reducing environmental pollution, and improving production safety.

[0003] The production of urea, as a kind of chemical fertilizer, is prone to breakage due to its small and hard particles during movement and collision, resulting in fine dust. During the crushing process of urea, most of the crushing is not completely isolated from the external environment. When the crushing equipment is working, the urea particles will be subjected to strong mechanical forces such as collision, friction, and shearing. These forces can cause some particles to break, and these broken particles will become fine dust. When the material is output from the crushing equipment, a large amount of dust will be generated, which will pollute the environment. Most of the existing dust removal equipment after urea crushing uses electrostatic dust removal. However, during the electrostatic dust removal process, electrostatic dust removal has good capture effect on small particle dust, but it cannot completely absorb the dust in the air for large particles and irregularly shaped particles, thereby reducing the actual capture efficiency and the dust removal effect, and reducing the practicality of the dust removal device for chemical production safety engineering. SUMMARY

[0004] The utility model aims at solving the problem of low dust removal effect of the existing dust removal equipment after urea crushing and reducing the practicality of the dust removal device for chemical production safety engineering, and proposes a dust removal device for chemical production safety engineering.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dust falling device for chemical production safety engineering, comprising a bottom plate, a conveying device body is arranged on the top of the bottom plate, a dust falling assembly is arranged on the top of the bottom plate near the center, the dust falling assembly comprises two fixing frames, a lower communication bin is fixed between the outer surfaces of the two fixing frames, an upper communication bin is fixedly installed on the top of the lower communication bin, a driving motor is fixedly installed on the outer surface of the upper communication bin through screws, a driving shaft is fixedly connected to the output end of the driving motor, an isolation plate is fixedly sleeved on the outer surface of the driving shaft, a sliding groove is formed in the opposite inner walls of the lower communication bin, a sliding rod is slidably connected between the inner walls of the two sliding grooves, and an air suction fan is arranged at the bottom of the sliding rod.

[0006] Preferably, the inner wall of the lower communicating bin is provided with a multi-stage electric telescopic rod, and the outer surface of the lower communicating bin is fixedly communicated with a conveying pipe.

[0007] Preferably, the outer surface of the conveying pipe is provided with a solenoid valve, and the top of the bottom plate is fixedly installed with a compression-resistant frame near one side edge.

[0008] Preferably, the top of the compression-resistant frame is fixedly installed with a collecting bin, and the bottom of each of the two fixed frames is fixedly connected with the top of the bottom plate.

[0009] Preferably, both ends of the driving shaft are movably penetrated into the opposite outer parts of the upper communicating bin, and the isolation plate is arranged in the inner part of the upper communicating bin.

[0010] Preferably, one end of the multi-stage electric telescopic rod is fixedly connected with the outer surface of the sliding rod, and the inner wall of the lower communicating bin is provided with an optical particle counter.

[0011] Preferably, one end of the conveying pipe is fixedly penetrated into the inner part of the collecting bin, and the top of the upper communicating bin is provided with a crusher body.

[0012] Preferably, the bottom of the lower communicating bin is provided with a sealing assembly, the sealing assembly comprises a connecting frame, and the top of the connecting frame is fixedly connected with the bottom of the lower communicating bin.

[0013] Preferably, the bottom of the connecting frame is provided with an elastic sleeve, and the bottom of the connecting frame is provided with a hydraulic rod near both side edges.

[0014] Preferably, the bottom ends of the two hydraulic rods are fixedly connected with a sealing plate, the top of the sealing plate is fixedly connected with the bottom of the elastic sleeve, and the outer surface of the conveying device body is provided with a controller.

[0015] Compared with the prior art, the advantages and positive effects of the utility model lie in that,

[0016] 1、in the utility model, when it is needed to crush urea, first, the large-particle urea is crushed through the crusher body, and the crushed urea is conveyed to the top of the conveying device body, then small-particle dust on the surface of the urea is completely absorbed and collected through the negative pressure mode, when the dust on the surface of the urea is cleaned, the conveying device body is started, and the urea is conveyed forward, thereby solving the problem of low dust removal effect of the dust removal equipment used after urea crushing in the prior art.

[0017] 2. The utility model discloses, before inhaling fan absorbs dust, starts two hydraulic rams, drives sealing plate to move down to when with the conveying device body surface conveying belt contact, can realize the sealing between sealing plate and conveying belt under the extrusion of sealing plate, thereby realize the sealing of lower intercommunication bin, and the collection of later stage dust is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A front view perspective view of a dust falling device for chemical production safety engineering is provided for the utility model;

[0019] Figure 2 A side view perspective view of a dust falling device for chemical production safety engineering is provided for the utility model;

[0020] Figure 3 A dust falling assembly partial perspective view of a dust falling device for chemical production safety engineering is provided for the utility model;

[0021] Figure 4 An upper intercommunication bin partial cross section perspective view of a dust falling device for chemical production safety engineering is provided for the utility model;

[0022] Figure 5 A lower intercommunication bin partial cross section perspective view of a dust falling device for chemical production safety engineering is provided for the utility model;

[0023] Figure 6 A sealing assembly partial perspective view of a dust falling device for chemical production safety engineering is provided for the utility model.

[0024] Legend: 1, bottom plate, 2, conveying device body, 3, crusher body, 4, dust falling assembly, 401, fixed frame, 402, lower intercommunication bin, 403, upper intercommunication bin, 404, drive motor, 405, drive shaft, 406, isolation plate, 407, sliding slot, 408, sliding rod, 409, inhale fan, 410, multistage electric telescopic rod, 411, optical particle counter, 412, electromagnetic valve, 413, collection bin, 414, pressure -resisting frame, 415, conveying pipe, 5, sealing assembly, 501, connecting frame, 502, telescopic sleeve, 503, sealing plate, 504, hydraulic rod, 6, controller. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above -mentioned purpose, feature and advantage of the utility model, the utility model is further explained below with the help of drawings and examples.It is to be explained that the embodiment of the application and the feature in the embodiment can be combined mutually in the case of not conflicting.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example 1, as Figures 1-6 As shown, this utility model provides a dust suppression device for chemical production safety engineering, including a base plate 1, a conveying device body 2 on the top of the base plate 1, and a dust suppression component 4 near the center of the top of the base plate 1. The dust suppression component 4 includes two fixed frames 401, a lower connecting chamber 402 fixed between the outer surfaces of the two fixed frames 401, an upper connecting chamber 403 fixedly installed on the top of the lower connecting chamber 402, a drive motor 404 fixedly installed on the outer surface of the upper connecting chamber 403 by screws, a drive shaft 405 fixedly connected to the output end of the drive motor 404, an isolation plate 406 fixedly sleeved on the outer surface of the drive shaft 405, and sliding grooves 407 opened on the opposite inner walls of the lower connecting chamber 402. A sliding rod 408 is slidably connected between the inner walls of the two sliding grooves 407, and an air suction fan 409 is installed at the bottom of the sliding rod 408. The inner wall of 402 is provided with a multi-stage electric telescopic rod 410. The outer surface of the lower connecting chamber 402 is fixedly connected to a conveying pipe 415. The outer surface of the conveying pipe 415 is provided with a solenoid valve 412. The top of the bottom plate 1 is fixedly installed near one edge with a pressure-resistant frame 414. The top of the pressure-resistant frame 414 is fixedly installed with a collection chamber 413. The bottoms of the two fixed frames 401 are fixedly connected to the top of the bottom plate 1. The two ends of the drive shaft 405 are respectively movably extended to the opposite sides of the upper connecting chamber 403. The isolation plate 406 is set inside the upper connecting chamber 403. One end of the multi-stage electric telescopic rod 410 is fixedly connected to the outer surface of the slide rod 408. The inner wall of the lower connecting chamber 402 is provided with an optical particle counter 411. One end of the conveying pipe 415 is fixedly extended to the inside of the collection chamber 413. The top of the upper connecting chamber 402 is provided with the crusher body 3.

[0028] The overall effect of Example 1 is that, in chemical production safety engineering, when it is necessary to crush urea, large urea particles are first processed through a method such as... Figure 1The feeding port at the top of the crusher body 3 is connected to the inside of the upper communicating bin 403. The crusher body 3 is driven by the driving device to compress the urea particles to be crushed by the pressing plate, so that smaller particles are formed. The crushed urea is retained in the inside of the crusher body 3. When it is needed to output the crushed urea, the driving motor 404 is first started by the controller 6 to drive the driving shaft 405 to rotate, and then drive the isolation plate 406 to rotate by 90°. The surface of the isolation plate 406 is made of rubber material with strong sealing performance, so that the isolation between the upper communicating bin 403 and the lower communicating bin 402 can be realized. After the isolation plate 406 is rotated by 90°, the urea placed in the upper communicating bin 403 falls to the inside of the lower communicating bin 402 under the action of its own gravity to the top of the conveying device body 2. When a certain amount of urea is collected in the lower communicating bin 402, the driving motor 404 is started again to drive the isolation plate 406 to rotate to a position where the outer surface is completely in contact with the upper communicating bin 403, so that the complete isolation between the upper communicating bin 403 and the lower communicating bin 402 is realized again. Then the multi-stage electric telescopic rod 410 is started to be elongated to drive the sliding rod 408 to move forward along the two sliding grooves 407 until the sliding rod 408 moves to the center position of the lower communicating bin 402. At this time, the suction fan 409 can be started. The suction fan 409 drives the fan blades to rotate to generate negative pressure, so that the surrounding air flows into the equipment, and then the purpose of absorbing the dust upward is realized. The negative pressure generated by the suction fan 409 drives the dust particles in the crushed urea to move upward under the action of pressure difference. At the same time, the electromagnetic valve 412 is opened by the controller 6, so that the upward moving dust enters the collecting bin 413 through the conveying pipe 415 to be collected, thereby realizing the collection of the surface dust in the crushed urea and preventing the surface dust of the urea from spreading outward in the later conveying process. When the optical particle counter 411 detects that the dust content in the lower communicating bin 402 reaches the required value, the suction fan 409 can be closed by the controller 6. The optical particle counter 411 has a light source inside for irradiating the dust in the measured gas. When the light beam irradiates the dust, the dust will cause the light to scatter. The intensity and direction of the scattered light are related to the size, shape and concentration of the particles. The optical particle counter 411 is equipped with a photoelectric detector that can detect the scattered light and convert it into an electrical signal. The detector is usually arranged at a specific position in the light path to capture the light scattered back from the dust. The electrical signal is amplified and processed to calculate the number and size of the particles. Since different sized particles scatter light in different ways, the characteristics of the particles can be inferred by analyzing the intensity and time domain of the scattered light, so that the concentration of dust in the gas can be measured in real time. Then the multi-stage electric telescopic rod 410 is started again to be shortened to drive the suction fan 409 to move to one side of the inside of the lower communicating bin 402. Through the action of the dust falling assembly 4, the surface floating dust of the crushed urea pile is fully collected. When the surface dust of the urea is cleaned,The conveying device body 2 can be started, and the urea can be conveyed forward, so that the problem of low dust removal effect of the dust removal device in the prior art is solved.

[0029] As shown in Embodiment 2, Figures 1-6 The bottom of the lower communication bin 403 is provided with a sealing assembly 5, the sealing assembly 5 comprises a connecting frame 501, the top of the connecting frame 501 is fixedly connected with the bottom of the lower communication bin 402, the bottom of the connecting frame 501 is provided with an elastic sleeve 502, the bottom of the connecting frame 501 is provided with a hydraulic rod 504 near the two side edges, the bottom ends of the two hydraulic rods 504 are fixedly connected with a sealing plate 503, the top of the sealing plate 503 is fixedly connected with the bottom of the elastic sleeve 502, and the outer surface of the conveying device body 2 is provided with a controller 6.

[0030] The effect achieved by the whole embodiment 2 is that before the suction fan 409 absorbs the dust, in order to ensure the isolation of the lower communication bin 402 from the outside and improve the dust absorption efficiency, when it is needed to convey the urea in the upper communication bin 403 downward, the two hydraulic rods 504 are first started to be respectively elongated, so that the elastic sleeve 502 is elongated downward to drive the sealing plate 503 to move downward, wherein the sealing plate 503 is made of rubber, and when the sealing plate 503 contacts with the conveying belt on the surface of the conveying device body 2, the sealing between the sealing plate 503 and the conveying belt can be realized under the extrusion of the sealing plate 503, so that the sealing of the lower communication bin 402 is realized, and the collection of the dust in the later stage is facilitated.

[0031] Working principle: in the chemical production safety engineering, when the urea needs to be crushed, first, the large-particle urea is crushed into small particles by the crushing device 1, Figure 1The feeding port at the top of the crusher body 3 is connected to the inside of the upper communicating bin 403. The crusher body 3 is driven by the driving device to compress the urea particles to be crushed by the extrusion plate, so as to form smaller particles. The crushed urea is retained in the inside of the crusher body 3. When it is needed to output the crushed urea, the suction fan 409 is started to absorb the dust. In order to ensure the isolation of the lower communicating bin 402 from the outside and improve the dust absorption efficiency, the two hydraulic rods 504 are started to be elongated, so as to make the telescopic sleeve 502 elongate downward and drive the sealing plate 503 to move downward. The sealing plate 503 is made of rubber. When the sealing plate 503 contacts with the conveying belt on the surface of the conveying device body 2, the sealing between the sealing plate 503 and the conveying belt is realized under the extrusion of the sealing plate 503, so as to realize the sealing of the lower communicating bin 402 and facilitate the collection of the dust in the later stage. Then, the driving motor 404 is started by the controller 6 to drive the driving shaft 405 to rotate, so as to drive the isolation plate 406 to rotate by 90°. The surface of the isolation plate 406 is made of rubber with strong sealing performance, so as to realize the isolation between the upper communicating bin 403 and the lower communicating bin 402. When the isolation plate 406 rotates by 90°, the urea placed in the upper communicating bin 403 falls to the inside of the lower communicating bin 402 to the top of the conveying device body 2 under the action of its own gravity. When a certain amount of urea is collected in the lower communicating bin 402, the driving motor 404 is started again to drive the isolation plate 406 to rotate to a position where the outer surface of the isolation plate 406 is in contact with the upper communicating bin 403, so as to realize the complete isolation between the upper communicating bin 403 and the lower communicating bin 402 again. Then, the multi-stage electric telescopic rod 410 is started to be elongated, so as to drive the sliding rod 408 to move forward along the two sliding grooves 407 until the sliding rod 408 moves to the center position of the lower communicating bin 402. At this time, the suction fan 409 can be started. The suction fan 409 drives the fan blades to rotate to generate negative pressure, so as to make the surrounding air flow into the device, and then realize the purpose of absorbing the dust upward. The dust particles in the crushed urea move upward under the action of the negative pressure generated by the suction fan 409. At the same time, the electromagnetic valve 412 is opened by the controller 6, so that the upward moving dust enters the collecting bin 413 through the conveying pipe 415 to be collected, so as to realize the collection of the surface dust in the crushed urea and prevent the surface dust of the urea from spreading outward in the later conveying process. When the optical particle counter 411 detects that the dust content in the lower communicating bin 402 reaches the required value, the suction fan 409 can be closed by the controller 6. The optical particle counter 411 has a light source inside for irradiating the dust in the measured gas. When the light beam irradiates the dust, the dust will cause the scattering of the light. The intensity and direction of the scattered light are related to the size, shape and concentration of the particles. The optical particle counter 411 is equipped with a photoelectric detector, which can detect the scattered light and convert it into an electrical signal.The probe is usually arranged at a specific position of the light path to capture the light scattered back from the dust, and the electric signal is amplified and processed to calculate the number and size of the particulate matter, and since different sizes of particles scatter light in different ways, the characteristics of the particles can be inferred by analyzing the intensity and time domain of the scattered light, so as to measure the concentration of the dust in the gas in real time, and then the multi-stage electric telescopic rod 410 is started again to be shortened, and the air suction fan 409 is driven to move to the inside of the side of the bin 402, so that the dust on the surface of the crushed urea pile is fully collected through the action of the dust removal assembly 4, and when the dust on the surface of the urea is cleaned, the conveying device body 2 can be started to convey the urea forward.

[0032] The wiring diagram of the crusher body 3, the driving motor 404, the air suction fan 409, the multi-stage electric telescopic rod 410, the optical particle counter 411, the electromagnetic valve 412, the hydraulic rod 504 and the controller 6 in the utility model belongs to the common knowledge in the field, and the working principle is a known technology, and the model is selected according to actual use, so the control mode and wiring arrangement of the crusher body 3, the driving motor 404, the air suction fan 409, the multi-stage electric telescopic rod 410, the optical particle counter 411, the electromagnetic valve 412, the hydraulic rod 504 and the controller 6 are not explained in detail.

[0033] The above is only a preferred embodiment of the utility model, and is not limited to other forms, and any skilled person in the art can change or modify the above disclosed technology content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the utility model still belong to the protection scope of the utility model technical scheme.

Claims

1. A dust suppression device for safety engineering in chemical production, comprising a base plate (1), wherein a conveying device body (2) is disposed on the top of the base plate (1). Its features are: A dust-reducing assembly (4) is provided near the center of the top of the base plate (1). The dust-reducing assembly (4) includes two fixed frames (401). A lower connecting chamber (402) is fixed between the outer surfaces of the two fixed frames (401). An upper connecting chamber (403) is fixedly installed on the top of the lower connecting chamber (402). A drive motor (404) is fixedly installed on the outer surface of the upper connecting chamber (403) by screws. A drive shaft (405) is fixedly connected to the output end of the drive motor (404). An isolation plate (406) is fixedly sleeved on the outer surface of the drive shaft (405). Slide grooves (407) are provided on the opposite inner walls of the lower connecting chamber (402). A slide rod (408) is slidably connected between the inner walls of the two slide grooves (407). An air suction fan (409) is provided at the bottom of the slide rod (408).

2. The dust suppression device for chemical production safety engineering according to claim 1, characterized in that: The inner wall of the lower connecting chamber (402) is provided with a multi-stage electric telescopic rod (410), and the outer surface of the lower connecting chamber (402) is fixedly connected with a conveying pipe (415).

3. The dust suppression device for chemical production safety engineering according to claim 2, characterized in that: A solenoid valve (412) is provided on the outer surface of the conveying pipe (415), and a pressure-resistant frame (414) is fixedly installed on the top of the base plate (1) near one side edge.

4. The dust suppression device for chemical production safety engineering according to claim 3, characterized in that: The top of the pressure-resistant frame (414) is fixedly installed with a collection bin (413), and the bottom of both fixed frames (401) is fixedly connected to the top of the base plate (1).

5. The dust suppression device for chemical production safety engineering according to claim 4, characterized in that: The two ends of the drive shaft (405) extend to the opposite sides of the upper connecting chamber (403), and the isolation plate (406) is disposed inside the upper connecting chamber (403).

6. The dust suppression device for chemical production safety engineering according to claim 5, characterized in that: One end of the multi-stage electric telescopic rod (410) is fixedly connected to the outer surface of the slide rod (408), and an optical particle counter (411) is provided on the inner wall of the lower connecting chamber (402).

7. The dust suppression device for chemical production safety engineering according to claim 5, characterized in that: One end of the conveying pipe (415) is fixedly inserted into the interior of the collection bin (413), and the crusher body (3) is installed on the top of the upper connecting bin (403).

8. The dust suppression device for chemical production safety engineering according to claim 5, characterized in that: The bottom of the lower connecting compartment (402) is provided with a sealing component (5), the sealing component (5) includes a connecting frame (501), the top of the connecting frame (501) is fixedly connected to the bottom of the lower connecting compartment (402).

9. The dust suppression device for chemical production safety engineering according to claim 8, characterized in that: The bottom of the connecting frame (501) is provided with a telescopic sleeve (502), and hydraulic rods (504) are provided at the bottom of the connecting frame (501) near both sides.

10. The dust suppression device for chemical production safety engineering according to claim 9, characterized in that: A sealing plate (503) is fixedly connected between the bottom ends of the two hydraulic rods (504), and the top of the sealing plate (503) is fixedly connected to the bottom of the telescopic sleeve (502). A controller (6) is provided on the outer surface of the conveying device body (2).

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