Stock bin outlet anti-blocking device

Abstract

The utility model relates to a stock bin outlet anti-blocking device, which solves the problems that in the prior art, arching of vinasse materials occurs frequently in a stock bin, and unblocking is difficult, and adopts the technical scheme that the stock bin outlet anti-blocking device comprises a first-stage expanding body, a second-stage expanding body, a gate valve and a material detection assembly, the first-stage expanding body is provided with an upper opening and a lower opening, and the inlet end is connected with the bottom of a conical hopper of the stock bin; a vibration device is arranged on the side wall; the second-stage expanding body is provided with an upper opening and a lower opening and is arranged below the first-stage expanding body, the first-stage expanding body and the second-stage expanding body are connected through a gate valve, and the material detection assembly comprises material level detection devices arranged in the first-stage expanding body and the second-stage expanding body and a proximity switch arranged at the outlet end of the second-stage expanding body.

Description

Technical Field

[0001] This utility model relates to the field of material hopper technology, and in particular to a material hopper outlet anti-blocking device. Background Technology

[0002] The outlet structure of finished feed silos (round or square) is typically optimized for materials with good flowability (such as corn and flour). These materials have low inter-particle friction and high flowability in a dry state, and are not prone to sticking even under pressure. However, distillers' grains (especially soy sauce-flavored baijiu lees) have the following unique characteristics: high viscosity: residual sugars, proteins, and microbial metabolites in the lees form a sticky gel after drying, significantly increasing inter-particle adhesion; low flowability: when the material accumulates in the silo, it easily forms a dense, blocky structure under pressure, especially at the outlet end where the cross-sectional area decreases, where concentrated force makes arching more likely; hygroscopicity: distillers' grains are sensitive to humidity, and localized moisture accumulation in the silo further exacerbates adhesion, forming a "hardened layer."

[0003] The traditional single-outlet design and fixed cone structure of silos cannot adapt to the flow characteristics of such materials, resulting in the following problems: frequent arching: material forms a mechanical arch bridge at the outlet due to abrupt changes in cross-section. Conventional vibration or air cannons to break the arch will compact the material due to excessive instantaneous impact force, which will aggravate the blockage; difficulty in clearing blockage: manual clearing requires frequent machine shutdowns, which affects production efficiency and poses safety hazards. Utility Model Content

[0004] This invention provides a silo outlet anti-blocking device, which solves the problem of frequent arching and difficulty in clearing blockages of distiller's grains in the silo in the prior art.

[0005] The technical solution of this utility model includes: a first-stage expander, a second-stage expander, a gate valve, and a material detection component.

[0006] The first-stage expansion body has openings at the top and bottom, with the inlet end connected to the bottom of the cone hopper of the silo, and a vibration device is provided on the side wall;

[0007] The second-stage amplifier has openings at the top and bottom and is located below the first-stage amplifier. The first-stage amplifier and the second-stage amplifier are connected by a gate valve.

[0008] The material detection assembly includes a material level detection device disposed within the first-stage expander and the second-stage expander, and a proximity switch at the outlet end of the second-stage expander.

[0009] Preferably, the vibration device is a vibration motor installed on the outside of the side wall of the first-stage amplification body, and an annular buffer pad is fixed on the outer side of the upper edge of the first-stage amplification body. The annular buffer pad is made of rubber and is spaced apart from the first-stage amplification body.

[0010] Preferably, the gate valve is a pneumatic gate valve, which is inclined with an angle of 10-30° relative to the horizontal direction.

[0011] Preferably, the material level detection device is a rotary paddle level sensor, which is installed on the outside of the first-stage expander and the second-stage expander, respectively, and its detection end extends through the sidewalls of the first-stage expander and the second-stage expander into the interior of the first-stage expander and the second-stage expander, respectively.

[0012] Preferably, the second-stage expansion body has inspection doors on both sides of its upper end face, and each inspection door has a vent cap on each side to connect the external space and internal space of the second-stage expansion body. A dust filter bag is fitted on the vent cap.

[0013] Preferably, flexible connections are provided between the inlet end of the first-stage expander and the cone hopper of the hopper, and between the second-stage expander and the outlet of the gate valve.

[0014] Preferably, the inlet end of the first-stage expander is connected to the cone hopper of the hopper via a roller chain.

[0015] Preferably, the outer wall of the hopper cone is fixed with multiple reinforcing plates, the upper end of the roller chain is connected to the reinforcing plates, and the lower end is connected to the upper surface of the first-stage enlarged body.

[0016] Preferably, the first-stage enlargement is a conical funnel structure, and the second-stage enlargement is a square pyramidal funnel structure.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. It is equipped with a two-stage expansion structure, which increases the inlet cross-sectional size and the force-bearing area inside the cone. After the material flows through the two-stage expansion, the pressure on the material at the cone is reduced, which greatly reduces the probability of material arching.

[0019] 2. A vibratory motor is installed on the outside of the side wall of the first-stage expansion body. The vibration of the motor can prevent material from arching and effectively break the arches. The arch-breaking effect is good, ensuring smooth material feeding and discharging in the first-stage expansion body. At the same time, an annular buffer pad is set on the outer edge of the upper end of the first-stage expansion body. While restraining the vibration amplitude of the first-stage expansion body, it reduces the mechanical wear caused by vibration and improves the service life of the device.

[0020] 3. By setting up a material level detection device and a proximity switch, the material level in the two-stage expanded cone hopper and the presence of material at the outlet are detected to determine whether arching or material blockage has occurred, thereby achieving interlocking of the vibratory motor operation and increasing the service life of the equipment.

[0021] 4. The second-stage expansion body is equipped with a vent cap and an inspection door to prevent local air accumulation from causing poor material discharge and to facilitate maintenance.

[0022] 5. An inclined pneumatic gate valve is provided between the two-stage expansion bodies to facilitate the maintenance and cleaning of the second-stage expansion body after the incoming material is cut off. Attached Figure Description

[0023] Figure 1 This is a side view structural diagram provided for an embodiment of the present utility model;

[0024] Figure 2 This is a front view structural diagram provided for an embodiment of the present utility model;

[0025] Figure 3 A top view of the second-level enlarged body provided for an embodiment of this utility model.

[0026] The attached figures are labeled as follows:

[0027] 1. Conical hopper; 2. Reinforcing plate; 3. Roller chain; 4. Annular buffer pad; 5. First-stage expansion body; 6. Pneumatic gate valve; 7. Second-stage expansion body; 8. Flexible connection; 9. Vibration motor; 10. Vent cap; 11. Inspection door; 12. Material level sensor; 13. Proximity switch. Detailed Implementation

[0028] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be more thorough and complete.

[0029] like Figure 1 and Figure 2 As shown, the anti-blocking device for the silo outlet provided by this utility model includes: a first-stage expander 5, a second-stage expander 7, a gate valve, and a material detection component. The inlet end of the first-stage expander 5 is connected to the cone hopper 1 of the silo via a roller chain 3. A vibration motor 9 (preferably ZFB-40.15kv 380V) is installed on the outer side of the side wall. An annular buffer pad 4 is fixed on the outer edge of the upper end of the first-stage expander 5. The annular buffer pad is made of rubber and is spaced apart from the first-stage expander 5. In this embodiment, the annular buffer pad 4 is fixed by an external bracket so that the annular buffer pad 4 surrounds the outer side of the upper end of the first-stage expander 5 and is spaced apart from the first-stage expander 5. This can reduce the vibration amplitude of the first-stage expander when it vibrates and play a buffering role for the first-stage expander.

[0030] The second-stage expander 7 is located below the first-stage expander 5. In this embodiment, the first-stage expander 5 and the second-stage expander 7 are connected by a pneumatic gate valve 6. The pneumatic gate valve 6 is tilted at an angle of 10-30°, preferably 15°. Tilting the pneumatic gate valve 6 can reduce the risk of material leakage, and the tilting setting can prevent material from accumulating at the valve, avoiding blockage caused by material adhesion or arching.

[0031] In this embodiment, the material detection component includes a level sensor disposed within the first-stage expander 5 and the second-stage expander 7, and a proximity switch 13 (preferably LJC18A3-BZ / BX) located at the outlet of the second-stage expander 7. The level detection device is a rotary paddle level sensor (preferably CKY-RS20A), which is installed on the outside of the first-stage and second-stage expanders respectively. Its detection end extends through the sidewalls of the first-stage and second-stage expanders and into their interiors. It is easy to install and has strong anti-vibration performance, used for real-time monitoring of material accumulation status. Simultaneously, a controller is connected to the level sensor signal. The controller can control the start and stop of the vibrating motor 9 and the pneumatic gate valve 6 based on the signals from the level sensor 12 and the proximity switch 13. The above-mentioned electrical control method is prior art and is not protected by this application; therefore, it will not be described in detail here.

[0032] like Figure 3 As shown, the second-stage expansion body has inspection doors 11 on both sides of the upper end face, and the inspection doors are equipped with cover plates. Each inspection door 11 has a vent cap 10 on each side, which connects the external space and the internal space of the second-stage expansion body. The upper port of the vent cap 10 is fitted with a dust removal filter bag.

[0033] In this embodiment, silicone corrugated tube flexible connections 8 are used between the inlet end of the first-stage expander 5 and the hopper cone 1, and between the second-stage expander 7 and the outlet of the pneumatic gate valve 6. The silicone corrugated tube flexible connections 8 have the characteristics of corrosion resistance, non-sticking, and long service life.

[0034] In this embodiment, to ensure the stability of the device during operation, the first-stage enlargement 5 is a conical funnel structure, and the second-stage enlargement 7 is a square pyramidal funnel structure; the inlet end of the first-stage enlargement 5 is connected to the reinforcing plate on the cone hopper 1 of the hopper via a roller chain 3; a reinforcing plate 2 is provided on the side wall of the second-stage enlargement 7 for fixed connection with the external support, further supporting the second-stage enlargement.

[0035] The overall working principle of the above structure is described in detail below:

[0036] The material enters from the cone hopper 1 of the silo and passes through the first-stage expansion body 5 and the second-stage expansion body 7 in sequence.

[0037] When both level sensors in the two-stage expansion chamber show that there is material and the proximity switch also shows that there is material, there is no material blockage in the silo, and the vibration motor 9 does not operate.

[0038] When the level sensor in the first-stage expansion body 5 shows material present and the level sensor in the second-stage expansion body 7 shows no material present, a blockage occurs in the first-stage expansion body 5. The vibration motor 9 starts and generates vibration to clear the blockage in the first-stage expansion body. When the clearing is complete and the level sensor in the second-stage expansion body 7 shows material present, the vibration motor 9 automatically shuts off to stop clearing the blockage.

[0039] When the level sensors in both stages of the expansion body show material, but the proximity switch shows no material, the system will alarm to indicate that the second stage expansion body 7 is blocked. At this time, the pneumatic gate valve 6 will close and the vibration motor 9 will not operate. At this time, the upper inspection door of the second stage expansion body 7 needs to be opened manually to clear the blockage inside the second stage expansion body.

[0040] When the material level sensor inside the first-stage expansion body 5 shows no material, the system will indicate that the bin is empty, and the vibration motor 9 will not operate.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A silo outlet anti-blocking device, installed below the silo cone, characterized in that, include: The system consists of a first-stage expander, a second-stage expander, a gate valve, and a material detection assembly. The first-stage expansion body has openings at the top and bottom, with the inlet end connected to the bottom of the cone hopper of the silo, and a vibration device is provided on the side wall; The second-stage amplifier has openings at the top and bottom and is located below the first-stage amplifier. The first-stage amplifier and the second-stage amplifier are connected by a gate valve. The material detection assembly includes a material level detection device disposed within the first-stage expander and the second-stage expander, and a proximity switch at the outlet end of the second-stage expander.

2. The silo outlet anti-blocking device according to claim 1, characterized in that, The vibration device is a vibration motor installed on the outside of the side wall of the first-stage amplification body, and an annular buffer pad is fixed on the outer side of the upper edge of the first-stage amplification body. The annular buffer pad is made of rubber and is spaced apart from the first-stage amplification body.

3. The silo outlet anti-blocking device according to claim 1, characterized in that, The gate valve is a pneumatic gate valve, which is inclined with an angle of 10-30° relative to the horizontal direction.

4. The silo outlet anti-blocking device according to claim 1, characterized in that, The material level detection device is a rotary paddle level sensor, which is installed on the outside of the first-stage expander and the second-stage expander, respectively. Its detection end extends through the side wall of the first-stage expander and the second-stage expander and into the interior of the first-stage expander and the second-stage expander, respectively.

5. The silo outlet anti-blocking device according to claim 2, characterized in that, The second-stage expansion body has inspection doors on both sides of its upper end face. Each inspection door has a vent cap on each side, which connects the external space and internal space of the second-stage expansion body. A dust filter bag is fitted on the vent cap.

6. The silo outlet anti-blocking device according to claim 1, characterized in that, Flexible connections are provided between the inlet end of the first-stage expander and the cone hopper of the silo, and between the second-stage expander and the outlet of the gate valve.

7. The silo outlet anti-blocking device according to claim 1, characterized in that, The inlet end of the first-stage expansion body is connected to the cone hopper of the hopper via a roller chain.

8. The silo outlet anti-blocking device according to claim 7, characterized in that, The outer wall of the hopper cone is fixed with multiple reinforcing plates. The upper end of the roller chain is connected to the reinforcing plates, and the lower end is connected to the upper surface of the first-stage enlarged body.

9. The silo outlet anti-blocking device according to claim 1, characterized in that, The first-stage enlargement is a conical funnel structure, and the second-stage enlargement is a square pyramidal funnel structure.

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