Automatic cleaning device for stock bin

Abstract

The utility model discloses an automatic cleaning device for a stock bin. The automatic cleaning device comprises a storage barrel, the air extractor is fixedly arranged on the outer wall of the top of the material storage barrel, and an opening in the top end of the air extractor is communicated with the top in the material storage barrel through an air guide mechanism; the scraping plate is annularly arranged, is arranged in the material storage barrel and is in contact with the inner wall of the material storage barrel, a sieve plate is fixedly arranged in the scraping plate in a penetrating manner, and a cleaning mechanism is arranged on the top side of the sieve plate and is used for cleaning the sieve plate. When the improved storage bin is used, along with discharging of small-particle raw materials in the storage bin, cleaning of most of the inner walls of the storage bin can be synchronously completed in a scraping mode, then after the internal raw materials are discharged, the remaining inner walls of the storage bin are cleaned through high-speed flowing airflow, the cleaning effect of the storage bin is good, and the cleaning efficiency is high. And the cleaning time and cost of the storage bin are greatly reduced, and the device is simple in structure and low in production cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of stock bin, especially a kind of stock bin automatic cleaning device. BACKGROUND

[0002] Stock bin is a kind of container or structure specially designed for storing, managing and conveying bulk materials such as granules, powders, liquids, etc., which is usually made of durable materials such as steel, stainless steel, polyethylene or glass steel, with sealing, corrosion resistance and multifunctionality to meet the storage needs of different materials.

[0003] When existing stock bin stores small particle materials, due to the extremely small volume of the materials, a small amount of residual materials will adhere to the inside of the stock bin after the materials are discharged from the stock bin. At this time, the inside wall of the stock bin is usually cleaned by spraying, but a certain amount of water will still remain on the inside wall of the stock bin after cleaning, which may cause some raw materials to still adhere to the inside wall of the stock bin. If the inside wall of the stock bin is cleaned by long-term water flushing, a large amount of time and water will be consumed, resulting in high stock bin cleaning cost. SUMMARY

[0004] The purpose of the utility model is to provide a stock bin automatic cleaning device to solve the problems raised in the background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a stock bin automatic cleaning device, comprising a storage cylinder;

[0006] Further comprising:

[0007] An air extraction device is fixedly installed on the outer wall of the top of the storage cylinder, and the top opening thereof is connected in communication with the top inside the storage cylinder through a gas guide mechanism;

[0008] A scraper is arranged in an annular shape and is in contact with the inner wall of the storage cylinder, a sieve plate is fixedly installed in the scraper, and a cleaning mechanism is arranged on the top side of the sieve plate for cleaning the sieve plate;

[0009] An electric control valve is fixedly installed through the outer peripheral wall of the top of the storage cylinder, and the discharge end of the electric control valve is coplanar with the inner wall of the storage cylinder, and the electric control valve is gap matched with the air extraction device.

[0010] Preferably, the bottom of the storage cylinder is arranged in a circular table shape, and the upper and lower sides of the scraper are arranged in an arc shape.

[0011] Preferably, a gas heating device is arranged below the air extraction device and is fixedly connected with the outer wall of the storage cylinder, and the top opening of the gas heating device is connected in communication with the bottom opening of the air extraction device through a pipeline connector.

[0012] Preferably, the cleaning mechanism includes a support rod located above the screen plate and fixedly connected to the inner wall of the storage cylinder. Two air storage holes are opened opposite each other on the support rod. A piston plate is slidably installed in the air storage hole. A pressure limiting valve is fixedly installed through the middle of the piston plate. A spring is provided on the top side of the piston plate, and the two ends of the spring are fixedly connected to the corresponding piston plate and the inner top wall of the corresponding storage cylinder, respectively.

[0013] Preferably, a soft pad is fixedly installed below the support rod, and the bottom side of the soft pad is in contact with the top side of the sieve plate.

[0014] Preferably, the air guiding mechanism includes an electrically controlled three-way valve, which is fixedly installed at the top of the storage cylinder, and its top opening is connected to the top opening of the air extraction device through a connecting pipe. Both side openings of the electrically controlled three-way valve are connected to the interior of the corresponding air storage hole through conduits.

[0015] This utility model has the following beneficial effects:

[0016] When this improved storage silo is in use, as small particles of raw material are discharged from the silo, most of the inner wall of the silo can be cleaned simultaneously by scraping. After the raw material is discharged, the remaining inner wall of the silo is cleaned by high-speed airflow. The silo has a good cleaning effect and greatly reduces the cleaning time and cost of the silo. Moreover, the device has a simple structure and low production cost. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the overall structure of this utility model;

[0019] Figure 2 This is a front view of the internal structure of part of the storage cylinder and support rod of this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This is an elevation view of the internal structure of the scraper and sieve plate of this utility model;

[0022] Figure 5 This is a perspective view of the internal structure of the inverted support rod of this utility model.

[0023] In the figure: 1, storage cylinder; 2, air extraction device; 3, air guide mechanism; 31, electric control three-way valve; 32, connecting pipe; 33, conduit; 4, scraper; 5, sieve plate; 6, cleaning mechanism; 61, support rod; 62, air storage hole; 63, piston plate; 64, pressure limiting valve; 65, spring; 66, soft pad; 7, electric control valve; 8, gas heating device. DETAILED DESCRIPTION

[0024] In order to make the technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples.

[0025] The utility model provides a technical scheme: Figure 1 Figure 5 The utility model discloses an automatic cleaning device for stock bin, which comprises a storage cylinder 1.

[0026] Further comprising:

[0027] The air extraction device 2 is fixedly arranged on the outer wall of the top of the storage cylinder 1, and the top opening thereof is connected in communication with the top of the storage cylinder 1 through the air guide mechanism 3.

[0028] The scraper 4 is arranged in a ring shape and is arranged in the storage cylinder 1 and in contact with the inner wall of the storage cylinder 1.

[0029] The electric control valve 7 is fixedly and penetratingly arranged on the outer peripheral wall of the top of the storage cylinder 1.

[0030] In the embodiment, the improved storage bin is used, please refer to Figure 1 and Figure 3 When the feeding operation of the raw materials in the storage cylinder 1 is performed, first, the operator connects one end of the suction pipe to the electric control valve 7 and places the other end of the suction pipe on the raw materials in the raw material storage device, then opens the valve at the bottom end of the storage cylinder (a valve is fixedly arranged in the opening at the bottom end of the storage cylinder for controlling the discharge of the raw materials in the storage cylinder 1, please refer to Figure 2 ), and at the same time, the air extraction device 2 is started to continuously extract the gas at the top of the storage cylinder 1 through the air guide mechanism 3, so that a negative pressure cavity is formed in the storage cylinder 1, at this time, the external gas flows into the storage cylinder 1 from the opening at the bottom end of the storage cylinder 1 and flows upward to supplement the lost gas at the top of the storage cylinder 1.

[0031] ​When the gas flows upward to the position of the sieve plate 5 in the storage cylinder 1, due to the limited gas flow through the holes of the sieve plate 5, an upward thrust can be applied to the sieve plate 5 to push the sieve plate 5 and the scraper 4 to slide upward until the sieve plate 5 is in contact with the cleaning mechanism 6, at this time, the sieve plate 5 is located above the electric control valve 7 and cannot continue to move upward, then the electric control valve 7 is opened and the bottom opening of the storage cylinder 1 is closed, at this time, the external gas continuously flows into the storage cylinder 1 through the suction pipe and the electric control valve 7 to maintain the position of the sieve plate 5 in the storage cylinder 1, and the raw materials are sucked into the storage cylinder 1 through the gas flow, at this time, due to the gravity of the raw materials, most of the raw materials fall into the bottom of the storage cylinder 1, and the other part of the raw materials is also intercepted in the storage cylinder 1 due to the blocking of the sieve plate 5, and the self-cleaning of the sieve plate 5 is completed by the cleaning mechanism 6, so that the feeding operation of the raw materials in the storage cylinder 1 is gradually completed, and the feeding operation of the raw materials in the storage bin can be completed by one person, and the device has simple structure and low production cost.

[0032] Please refer to Figure 1 - Figure 4 When the raw materials in the storage cylinder 1 are used, the air suction device 2 is started to continuously inject gas into the top of the storage cylinder 1 through the gas guide mechanism 3, due to the closing of the electric control valve 7, a closed space is formed at the top of the storage cylinder 1, and a high-pressure cavity is formed at the top side of the sieve plate 5 as the gas flows in, and due to the blocking of the sieve plate 5 holes by the raw materials, the gas can apply a pushing force to the top of the raw materials in the storage cylinder 1 through the sieve plate 5, at this time, the valve of the bottom opening of the storage cylinder 1 is opened, and the raw materials slide out of the bottom opening of the storage cylinder 1, as the raw materials in the storage cylinder 1 are reduced, the sieve plate 5 and the scraper 4 automatically move downward due to their own gravity, and the raw materials attached to the inner wall of the storage cylinder 1 are scraped off to complete the cleaning of the inner wall of the storage cylinder 1, when the scraper 4 encounters raw materials with strong adhesion to the inner wall of the storage cylinder 1, due to the pushing force applied to the filter plate by the gas flowing through the filter plate holes, the resistance between the scraper 4 and the attached raw materials can be further increased, so that the raw materials with strong adhesion can be scraped off, when the discharge of the raw materials in the storage cylinder 1 is completed and the storage bin is cleaned, the air pump is started to continuously inject gas into the storage cylinder 1 through the gas guide mechanism 3, when the gas flow moves to the position of the sieve plate 5, the gas flow is divided into multiple small gas flows to blow on the inner wall of the bottom of the storage cylinder 1, so that the raw materials attached to the inner wall of the bottom of the storage cylinder 1 are cleaned by the high-speed flowing gas flow to complete the complete cleaning of the raw materials attached to the inner wall of the storage bin, the cleaning effect of the storage bin is good, and the cleaning time and cost of the storage bin are greatly reduced.

[0033] In further preferable embodiments of the present application, as shown in Figure 1 - Figure 3 The bottom of the storage cylinder 1 is in the shape of a circular truncated cone, the discharge end of the electric control valve 7 is coplanar with the inner wall of the storage cylinder 1, and the upper and lower sides of the scraper 4 are both in the shape of an arc surface.

[0034] In the embodiment, refer to Figure 1 and Figure 3 As shown, the discharge end of the electric control valve 7 is coplanar with the inner wall of the storage cylinder, so that the arrangement of the electric control valve 7 does not affect the downward movement of the scraper 4, and the arc surfaces on the upper and lower sides of the scraper 4 are arranged, so that the outer ring edge of the bottom side of the scraper 4 forms a structure similar to a circular knife edge, so as to enhance the scraping effect of the scraper 4 on the inner wall of the storage cylinder 1.

[0035] In further preferable embodiments of the utility model, as shown in Figure 1 and Figure 2 A gas heating device 8 is arranged below the gas extraction device 2 and fixedly connected with the outer wall of the storage cylinder 1, and the top opening of the gas heating device 8 is connected in communication with the bottom opening of the gas extraction device 2 through a pipeline connecting piece.

[0036] In the embodiment, refer to Figure 1 and Figure 2 As shown, when the gas extraction device 2 injects gas into the top of the storage cylinder 1, the external gas first flows into the gas heating device 8 through the bottom opening of the gas heating device 8 to complete the heating and drying treatment of the gas, and then the heated and dried gas is sucked by the gas extraction device 2 to avoid injecting a large amount of humid gas into the storage cylinder 1 and affecting the use of the device.

[0037] In further preferable embodiments of the utility model, as shown in Figure 2 and Figure 5 The cleaning mechanism 6 includes a support rod 61 arranged above the sieve plate 5 and fixedly connected with the inner wall of the storage cylinder 1, two gas storage holes 62 are oppositely arranged on the support rod 61, a piston plate 63 is slidably arranged in the gas storage hole 62, a pressure limiting valve 64 is fixedly and penetratively arranged in the middle part of the piston plate 63, a spring 65 is arranged on the top side of the piston plate 63, and the two ends of the spring 65 are respectively fixedly connected with the corresponding piston plate 63 and the inner top wall of the corresponding storage cylinder 1.

[0038] In the embodiment, refer to Figure 2 and Figure 5As shown, the air extractor 2 intermittently extracts gas from the two gas storage holes 62 to form a negative pressure cavity in the gas storage hole 62, thereby exerting an upward thrust on the piston plate 63, so that when the air extractor 2 extracts the gas in the gas storage hole 62, the air extractor 2 first pulls the piston plate 63 to move upward to compress the spring 65 until the pressure difference between the two ends of the pressure limiting valve 64 reaches a threshold value, and then the gas at the top of the storage cylinder 1 flows into the gas storage hole 62 through the pressure limiting valve 64 and over the piston plate 63 to be extracted by the air extractor 2. When the air extractor 2 stops extracting the gas in the gas storage hole, the piston plate 63 is automatically reset downward due to the pushing of the spring 65, thereby pushing part of the gas in the gas storage hole 62 to reversely pass through the holes of the corresponding positions of the filter plate to blow the raw materials attached to the bottom side of the holes of the corresponding positions of the sieve plate 5, so as to complete the self-cleaning of the sieve plate 5.

[0039] In further preferable embodiments of the present application, as shown in Figure 3 and Figure 4 , a soft pad 66 is fixedly arranged below the support rod 61, and the bottom side of the soft pad 66 is in contact with the top side of the sieve plate 5.

[0040] In the present embodiment, as shown in Figure 2 and Figure 4 , when the sieve plate 5 moves up to the position of the support rod, the sieve plate 5 first contacts the soft pad 66 until the scraper 4 and the support rod 61 abut each other. At this time, due to the abutment of the sieve plate 5 and the soft pad 66, the bottom of the soft pad 66 shrinks and deforms to form a surface completely adhering to the top side of the sieve plate 5, thereby dividing the holes on the sieve plate 5 into two parts respectively communicating with the two gas storage holes 62.

[0041] In further preferable embodiments of the present application, as shown in Figure 1 and Figure 2 , the gas guiding mechanism 3 comprises an electrically controlled three-way valve 31 fixedly arranged at the top end of the storage cylinder 1, and the top end opening of the electrically controlled three-way valve 31 is connected to the top end opening of the air extractor 2 through a connecting pipe 32, and the two side openings of the electrically controlled three-way valve 31 are respectively connected to the interiors of the corresponding gas storage holes 62 through conduits 33.

[0042] In the present embodiment, as shown in Figure 1 and Figure 2 , when the air extractor 2 extracts the gas at the top of the storage cylinder 1, the electrically controlled three-way valve 31 is started to make the two conduits 33 alternately communicate with the connecting pipe 32, thereby making the air extractor 2 intermittently extract the gas in the two gas storage holes 62.

[0043] Working principle: the improved storage bin in use, when the raw material in the storage cylinder 1 is loaded, first the operator connects one end of the suction pipe to the electric control valve 7, and places the other end of the suction pipe on the raw material in the raw material storage device, then opens the valve at the bottom end of the storage cylinder, and the air extractor 2 starts to continuously extract the gas in the gas storage hole 62 through the connecting pipe 32, the electric control three-way valve 31 and the conduit 33. Due to the blocking of the piston plate 63 and the pressure limiting valve 64, the top of the gas storage hole 62 first forms a negative pressure cavity, thereby exerting an upward pushing force on the piston plate 63, pulling the piston plate 63 to move upward and compress the spring 65, until the pressure difference between the two ends of the pressure limiting valve 64 reaches the threshold value, at which time the gas in the storage cylinder 1 continuously flows into the top wall of the gas storage hole 62 through the pressure limiting valve 64 and is extracted by the air extractor 2, so that a negative pressure cavity is formed in the storage cylinder 1, at which time the external gas flows into the storage cylinder 1 from the bottom opening of the storage cylinder 1 and flows upward, when the gas flows to the position of the sieve plate 5, due to the limited amount of gas flowing through the holes in the sieve plate 5, the gas flow can exert an upward pushing force on the sieve plate 5 to push the sieve plate 5 and the scraper 4 to slide upward, when the scraper 4 slides to the position of the support rod 61, first the sieve plate 5 contacts the bottom side of the soft pad 66, then the cutter contacts the support rod 61, at which time the sieve plate 5 and the soft pad 66 contact each other, the bottom of the soft pad 66 shrinks and deforms, forming a surface that completely fits the top side of the sieve plate 5, thereby dividing the holes in the sieve plate 5 into two parts that communicate with the two gas storage holes 62 respectively, then the electric control valve 7 is opened and the bottom opening of the storage cylinder 1 is closed, at which time the external gas continuously flows into the storage cylinder 1 through the suction pipe and the electric control valve 7 to maintain the upward pushing force on the sieve plate 5, and the raw material is sucked into the storage cylinder 1 through the gas flow, at which time most of the raw material falls into the bottom of the storage cylinder 1 due to its own gravity, and the other part of the raw material is also trapped in the storage cylinder 1 due to the blocking of the sieve plate 5, at the same time the air extraction operation in the two gas storage holes 62 is stopped, due to the pushing of the spring 65 on the piston plate 63, the piston plate 63 intermittently moves downward to reset, thereby pushing part of the gas in the bottom opening of the gas storage hole 62 to pass through the holes of the sieve plate 5, blowing the raw material attached to the bottom side of the corresponding position of the sieve plate 5, completing the self-cleaning of the sieve plate 5, after the raw material in the bin is loaded, the air extractor 2 stops running, at which time the sieve plate 5 and the scraper 4 automatically move downward due to their own gravity, the bottom side of the sieve plate 5 and the bottom side of the scraper 4 are in contact with the raw material to block the holes of the sieve plate 5;

[0044] When the raw material in the storage cylinder 1 is taken, the air suction device 2 is started to continuously inject gas into the top of the storage cylinder 1, and due to the closing of the electric control valve 7, the top of the storage cylinder 1 forms a closed space, and a high pressure cavity is formed on the top side of the sieve plate 5 with the inflow of the gas, and due to the plugging of the sieve plate 5 holes by the raw material, the gas can apply a pushing force to the top of the raw material in the storage cylinder 1 through the sieve plate 5, at this time the valve opening the bottom opening of the storage cylinder 1 is opened, and the raw material slides out from the bottom opening of the storage cylinder 1, and as the raw material in the storage cylinder 1 is reduced, the sieve plate 5 and the scraper 4 are automatically moved downward due to the gravity of the sieve plate 5 and the scraper 4, and the raw material attached to the inner wall of the storage cylinder 1 is scraped off to complete the cleaning of the inner wall of the storage cylinder 1, and when the scraper 4 encounters raw material with strong adhesion to the inner wall of the storage cylinder 1, the pushing force of the gas through the filter plate holes on the filter plate can further increase the resistance between the scraper 4 and the attached raw material, so that the raw material with strong adhesion can be scraped off, and when the raw material in the storage cylinder 1 is discharged to clean the storage bin, the air pump continuously injects gas into the storage cylinder 1, and when the gas flow moves to the position of the sieve plate 5, the gas flow is divided into multiple small gas flows to blow on the inner wall of the bottom of the storage cylinder 1, so that the high-speed flowing gas flow cleans the raw material attached to the inner wall of the bottom of the storage cylinder 1 to complete the complete cleaning of the raw material attached to the inner wall of the storage bin.

[0045] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A silo automatic cleaning device, comprising a storage cylinder (1); characterized in that Further comprising: An air extraction device (2) fixedly installed on the outer wall of the top of the storage cylinder (1), and the top opening thereof is communicated with the top inside of the storage cylinder (1) through a gas guide mechanism (3); A scraper (4) arranged in a ring shape, which is arranged in the storage cylinder (1) and in contact with the inner wall of the storage cylinder (1), a sieve plate (5) is fixedly installed in the scraper (4), and a cleaning mechanism (6) is arranged on the top side of the sieve plate (5) for cleaning the sieve plate (5); An electric control valve (7) fixedly installed through the outer peripheral wall of the top of the storage cylinder (1), and the discharge end of the electric control valve (7) is coplanar with the inner wall of the storage cylinder (1), and the electric control valve (7) is in clearance fit with the air extraction device (2).

2. A silo automatic cleaning device according to claim 1, characterized in that The bottom of the storage cylinder (1) is arranged in a circular truncated cone shape, and the upper and lower sides of the scraper (4) are arranged in an arc shape.

3. A silo automatic cleaning device according to claim 2, characterized in that: A gas heating device (8) is arranged below the air extraction device (2) and fixedly connected with the outer wall of the storage cylinder (1), and the top opening of the gas heating device (8) is communicated with the bottom opening of the air extraction device (2) through a pipeline connector.

4. A silo automatic cleaning device according to claim 3, characterized in that: The cleaning mechanism (6) comprises a support rod (61) located above the sieve plate (5) and fixedly connected with the inner wall of the storage cylinder (1), two gas storage holes (62) are oppositely arranged on the support rod (61), a piston plate (63) is slidably installed in the gas storage hole (62), a pressure limiting valve (64) is fixedly installed through the middle of the piston plate (63), a spring (65) is arranged on the top side of the piston plate (63), and the two ends of the spring (65) are fixedly connected with the corresponding piston plate (63) and the inner top wall of the storage cylinder (1), respectively.

5. A silo automatic cleaning device according to claim 4, characterized in that: A soft pad (66) is fixedly installed below the support rod (61), and the bottom side of the soft pad (66) is in contact with the top side of the sieve plate (5).

6. A silo automatic cleaning device according to claim 5, characterized in that The gas guide mechanism (3) comprises an electric control three-way valve (31) fixedly installed at the top of the storage cylinder (1), and the top opening of the electric control three-way valve (31) is communicated with the top opening of the air extraction device (2) through a connecting pipe (32), and the two side openings of the electric control three-way valve (31) are communicated with the interiors of the corresponding gas storage holes (62) through conduits (33).

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