Limited space safety operation system for granary

Abstract

The utility model relates to a granary limited space safety operation system which comprises a granary body with a granary wall, an axial flow fan arranged on the granary wall, a granary door capable of being opened inwards arranged on the granary wall, a gas sensor arranged in the granary body, and an interlocking ventilation window arranged on the granary wall and comprising a window opening and a window door. A bin door stop lever is assembled on the inner side of the bin door in the vertical direction in a guiding and moving mode, the bin door stop lever is provided with a stop position which moves upwards to stop the inner side of the bin door and an avoiding position which moves downwards to avoid the corresponding bin door, and a stop lever push rod used for driving the bin door stop lever to move from the avoiding position to the stop position is assembled at the bottom of the bin body in the horizontal direction in a guiding and moving mode. The stop lever push rod is driven by a push rod driving mechanism, the window door is further connected with an interlocking lever, and when the window door closes the window, the interlocking lever is matched with the stop lever push rod in a stopping mode. The utility model provides a granary limited space safety operation system to avoid the life safety problem of warehousing personnel caused by uncomfortable gas environment in a granary.

Description

Technical Field

[0001] The utility model relates to the field of warehouse safety operations, in particular to a safety operation system for limited space in a granary. Background Art

[0002] A granary is a special building for storing grains, and the quality and quantity of grains stored in it are related to national food security. Conducting operations such as checking the grain condition inside the granary is a weekly task for grain storekeepers. However, granary buildings have clear airtightness requirements. During the grain storage period, the warehouse doors and windows are in a closed state, and the air flow inside the warehouse exchanges infrequently with the external atmospheric environment, having an obvious "limited space" attribute [According to the "Safety Regulations for Limited Space Operations in Industrial and Trade Enterprises" (Order No. 13 of the Ministry of Emergency Management of the People's Republic of China), limited space operations referred to in these regulations mean a space that is enclosed or partially enclosed, not designed as a fixed workplace, where personnel can enter for operations, and is prone to the accumulation of toxic and harmful, flammable and explosive substances or insufficient oxygen content]. How to conduct efficient and safe entry and exit operations in the limited space of the granary and how to ensure the life safety of personnel entering the warehouse are problems that need to be solved urgently.

[0003] For the interior of the granary, due to the continuous respiration of grains, the oxygen concentration inside the warehouse may be relatively low and the carbon dioxide concentration may be relatively high; also, due to the need to use phosphine gas (a toxic gas) to fumigate and kill insects in grains, the phosphine concentration inside the warehouse may also be relatively high.

[0004] In the prior art, personnel entering the warehouse usually directly open the warehouse door and enter the granary to check the grain condition. Whether the oxygen concentration is relatively low, the carbon dioxide concentration is relatively high, or the phosphine concentration is relatively high, it may lead to life safety problems for personnel entering the warehouse. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a safety operation system for limited space in a granary to avoid life safety problems of personnel entering the warehouse caused by the unsuitable gas environment inside the warehouse.

[0006] To solve the above technical problems, the technical solution of a safety operation system for limited space in a granary in the utility model is as follows:

[0007] A safe operation system for a limited space in a granary comprises a silo body having a silo wall, an axial flow fan is arranged on the silo wall, a silo door that can be opened inward is also arranged on the silo wall, a gas sensor is arranged in the silo body, the gas sensor is one or at least two of an oxygen sensor, a carbon dioxide sensor, a nitrogen sensor, and a phosphine sensor, an interlocking ventilation window is also arranged on the silo wall, the interlocking ventilation window comprises a window and a window door that can move up and down to open or close the window, the inner side of the silo door is guided and moved along the up and down directions and is equipped with a silo door stop rod, the silo door stop rod has a stop position that moves upward and stops at the inner side of the silo door and a avoidance position that moves downward and makes way for the corresponding silo door, the bottom of the silo body is guided and moved along the left and right directions and is equipped with a stop rod push rod for driving the silo door stop rod to move upward from the avoidance position to the stop position, the stop rod push rod is driven by a push rod driving mechanism, an interlocking rod is also connected to the window door, when the window door closes the window, the interlocking rod cooperates with the stop rod push rod to stop.

[0008] Furthermore, conventional ventilation windows are also provided on the warehouse wall.

[0009] Furthermore, the interlocking ventilation windows and the axial flow fans are arranged on the warehouse walls on opposite sides of the warehouse body.

[0010] Furthermore, the door includes a left door and a right door arranged on the left and right sides, and the door stopper includes a left stopper arranged corresponding to the left door and a right stopper arranged corresponding to the right door.

[0011] Further, the gas sensor is an oxygen sensor, a carbon dioxide sensor and a phosphine sensor; or, the gas sensor is an oxygen sensor, a nitrogen sensor and a phosphine sensor.

[0012] Furthermore, the door baffle rod guide is assembled on the baffle rod support, and baffle rod return springs are respectively arranged between the baffle rod support and the left baffle rod and the right baffle rod forcing the corresponding baffle rod to move toward the avoidance position. The baffle rod push rod is provided with a pushing inclined surface for pushing the bottom of the left baffle rod and the right baffle rod when the baffle rod push rod moves to the left, so that the left baffle rod and the right baffle rod move upward to the stop position.

[0013] Furthermore, the push rod driving mechanism includes a horizontally arranged electric push rod, and the electric push rod is connected to the right end of the blocking rod push rod.

[0014] Furthermore, a push rod through hole for the interlocking rod to pass through in the up and down direction is arranged on the blocking rod push rod, and an interlocking rod driving mechanism for driving the interlocking rod to move the window door up and down is arranged on the warehouse wall of the warehouse body.

[0015] Furthermore, the interlocking rod driving mechanism includes a driving nut whose rotation axis extends in the up-down direction, the driving nut is driven by a driving motor, and the driving nut is threadably matched with the interlocking rod.

[0016] The beneficial effects of the present utility model are as follows: In the present utility model, when the personnel entering the warehouse need to perform warehousing operations, the gas sensor first detects the gas concentration inside the warehouse. When the concentration of harmful gases is relatively high, the window door of the interlocking ventilation window opens, and the axial flow fan turns on, realizing ventilation and air exchange inside the warehouse to avoid potential life safety problems that may occur when personnel directly enter the warehouse. In addition, when the interlocking ventilation window is not opened and there is no ventilation and air exchange inside the warehouse, the interlocking rod and the stop rod push rod are in a blocking fit. At this time, the warehouse door stop rod is in the blocking position, and the warehouse door cannot be opened. Therefore, only after ventilation and air exchange inside the warehouse can the warehouse door be opened, which fundamentally avoids the safety problems that may occur when personnel entering the warehouse directly open the warehouse door for warehousing operations due to misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By referring to the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the drawings, several embodiments of the present disclosure are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0018] Figure 1 is a schematic structural diagram of an embodiment of a limited space safety operation system for a granary in the present utility model;

[0019] Figure 2 is an enlarged view of part A in 1;

[0020] Figure 3 is Figure 1 a schematic diagram of the state when the interlocking ventilation window in is opened;

[0021] Figure 4 is Figure 3 an enlarged view of part B in;

[0022] Figure 5 is Figure 3 a schematic diagram of the cooperation between the driving nut and the driving motor in;

[0023] Figure 6 is Figure 3 a side view of the cooperation between the window door and the interlocking rod in;

[0024] 1. Warehouse wall; 2. Axial flow fan; 3. Warehouse roof; 4. Left warehouse door; 5. Right warehouse door; 6. Window door guide groove; 7. Window; 8. Window door; 9. Interlocking rod; 10. Interlocking rod guide sleeve; 11. Nut support; 12. Driving nut; 13. Nut gear; 14. Electric push rod; 15. Push rod guide sleeve; 16. Stop rod push rod; 17. Push rod perforation; 18. Left stop rod; 19. Right stop rod; 20. Thrust inclined plane; 21. Stop rod support; 22. Stop rod return spring; 23. Motor shaft gear; 24. Driving motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] For the convenience of understanding the present utility model, the present utility model will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. The preferred embodiments of the present utility model are given in the accompanying drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present utility model more thorough and comprehensive.

[0026] It should be noted that unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model.

[0027] An embodiment of a limited space safety operation system for a granary in the present utility model is as Figures 1 - 6 shown: It includes a silo body with a silo wall 1. The silo body also includes a silo top 3 provided at the top of the silo body. An axial flow fan 2 is provided on the left silo wall, and a silo door that can be opened inward is provided on the front silo wall. The silo door includes a left silo door 4 and a right silo door 5 that are arranged to open opposite each other.

[0028] Gas sensors are distributed in the silo body. The gas sensors are three types: oxygen sensors, carbon dioxide sensors, and phosphine sensors. An interlocking ventilation window is provided on the right silo wall of the silo body. The interlocking ventilation window includes a window 8 and a window door 7 that can move up and down to open or close the window. In this embodiment, window door guide grooves 6 with opposite notches are provided on the front and rear sides of the window 7. The window door is movably assembled in the window door guide groove 6. The window door moves upward to open the window, and the window door moves downward to close the window.

[0029] The inner side of the warehouse door is guided and moved along the up and down directions with a warehouse door stop rod, which has a stop position for moving upward and stopping at the inner side of the warehouse door, and an avoidance position for moving downward and making way for the corresponding warehouse door. The bottom of the warehouse body is guided and moved along the left and right directions with a stop rod push rod 16 for driving the warehouse door stop rod to move upward from the avoidance position to the stop position. The stop rod push rod 16 is driven by a push rod driving mechanism, and is guided and moved on a horizontally arranged push rod guide sleeve 15. In this embodiment, the door blocking rod includes a left blocking rod 18 corresponding to the left door 4 and a right blocking rod 19 corresponding to the right door 5. The door blocking rod is guided and moved in the up-down direction and assembled on the blocking rod support 21. A blocking rod return spring 22 for forcing the corresponding blocking rod to move toward the avoidance position is respectively arranged between the blocking rod support 21 and the left blocking rod and the right blocking rod. The blocking rod return spring 22 is a compression spring with an axis extending in the up-down direction. The blocking rod push rod is provided with a push inclined surface 20 for pushing the bottom of the left blocking rod and the right blocking rod respectively when the blocking rod push rod moves to the left, so that the left blocking rod and the right blocking rod move upward to the stop position. The push rod driving mechanism includes a horizontally arranged electric push rod 14, and the right end of the electric push rod 14 is connected to the right end of the blocking rod push rod 16.

[0030] A vertically arranged interlocking rod 9 is fixed on the window door. When the window door 8 closes the window 7, the interlocking rod 9 and the blocking rod push rod 16 are blocked and matched. Specifically, an interlocking rod guide sleeve 10 is provided on the right wall of the warehouse body, and the interlocking rod 9 is guided and moved and assembled in the interlocking rod guide sleeve 10. The blocking rod push rod 16 is provided with a push rod through hole 17 for the interlocking rod to be inserted in the up and down direction. The warehouse wall of the warehouse body is provided with an interlocking rod driving mechanism for driving the interlocking rod to move the window door up and down. When the door blocking rod is in the blocking position, the lower end of the interlocking rod 9 can be inserted in the push rod through hole 17. When the interlocking rod moves the window door upward to open the corresponding window, the lower end of the interlocking rod 9 moves out of the push rod through hole 17. At this time, the blocking rod push rod can move left and right under the drive of the push rod driving mechanism.

[0031] The interlocking rod driving mechanism includes a driving nut 12 whose rotation axis extends in the up-down direction. The driving nut 12 is rotatably assembled on the nut support 11. The nut support 11 is fixed to the outside of the right side wall of the warehouse body. The driving nut 12 is driven by a driving motor 24. The driving nut 12 is threadedly matched with the interlocking rod 9. Specifically, the driving motor is installed on the outside of the right side wall of the warehouse body. The driving nut 12 is coaxially connected with a nut gear 13. The motor shaft of the driving motor 24 is connected with a motor shaft gear 23. The motor shaft gear 23 is meshed with the nut gear 13 for transmission. The driving nut and the interlocking rod constitute a nut screw mechanism. When the driving nut rotates, the interlocking rod can move horizontally up and down.

[0032] Conventional ventilation windows are also provided on the warehouse wall. Conventional ventilation windows refer to ordinary ventilation windows that are not linked to the barrier rod push rod. Conventional ventilation windows can be opened manually or electrically. An indicator light is provided on the warehouse door. When the gas concentration in the warehouse does not meet the standard, the indicator light will show red. When the gas concentration in the warehouse meets the standard, the indicator light will show green.

[0033] When the utility model is in use, an access control button and a door opening button are arranged on the outer side of the warehouse door. The access control button is used to control the operation of the axial flow fan and the interlocking ventilation window, and the door opening button is used to control the operation of the push rod driving mechanism. The warehouse entrant needs to press the access control button before entering the warehouse. After pressing the access control button, the axial flow fan works according to the gas concentration in the warehouse, and the window door of the interlocking ventilation window moves upward to open the window, at which time ventilation in the warehouse can be achieved. When the gas concentration in the warehouse meets the requirements, the indicator light on the warehouse door shows green. At this time, the operator can press the door opening button, and the electric push rod can move to the right with the stop rod push rod. The warehouse door stop rod moves downward under the action of the reset spring and is in the avoidance position. At this time, the warehouse door can be opened normally inwards, and the entrants can enter the warehouse safely for operation. If the person entering the warehouse does not press the access button but directly presses the door opening button, the interlocking rod connected to the interlocking ventilation window will cooperate with the blocking rod push rod, the blocking rod push rod cannot move, and the warehouse door blocking rod cannot move down to the avoidance position. Due to the obstruction of the warehouse door blocking rod, the warehouse door cannot be opened smoothly, avoiding safety hazards caused by operator misoperation.

[0034] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model according to the specific circumstances.

[0035] Based on the above description of this specification, those skilled in the art can also understand the terms used as follows. For example, terms indicating orientation or positional relationships such as "upper", "lower", "front", "rear", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "center", "longitudinal", "transverse", "clockwise" or "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings of this specification. It is only for the purpose of facilitating the description of the solution of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in the specific orientation. Therefore, the above terms of orientation or positional relationships cannot be understood or interpreted as a limitation to the solution of the present invention.

[0036] In addition, the terms "first" or "second" etc. used in this specification to refer to numbers or ordinals are only for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise specifically defined.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A safe operation system for a grain silo with limited space, comprising a silo body with a silo wall, an axial flow fan is arranged on the silo wall, and a silo door that can be opened inward is also arranged on the silo wall, characterized in that: A gas sensor is arranged in the warehouse body, and the gas sensor is one or at least two of an oxygen sensor, a carbon dioxide sensor, a nitrogen sensor, and a phosphine sensor. An interlocking ventilation window is also arranged on the warehouse wall, and the interlocking ventilation window includes a window and a window door which can be moved up and down to open or close the window. The inner side of the warehouse door is guided and moved along the up and down directions and is equipped with a warehouse door stop rod. The warehouse door stop rod has a stop position which moves upward and stops at the inner side of the warehouse door, and a avoidance position which moves downward and makes way for the corresponding warehouse door. The bottom of the warehouse body is guided and moved along the left and right directions and is equipped with a stop rod push rod which is used to drive the warehouse door stop rod to move upward from the avoidance position to the stop position. The stop rod push rod is driven by a push rod driving mechanism. An interlocking rod is also connected to the window door. When the window door closes the window, the interlocking rod cooperates with the stop rod push rod to stop.

2. The granary limited space safety operation system according to claim 1 is characterized by: Conventional ventilation windows are also provided on the warehouse wall.

3. The granary limited space safety operation system according to claim 1 is characterized by: The interlocking ventilation windows and the axial flow fans are arranged on the warehouse walls on two opposite sides of the warehouse body.

4. The granary limited space safety operation system according to claim 1 is characterized by: The gas sensor is an oxygen sensor, a carbon dioxide sensor and a phosphine sensor; or, the gas sensor is an oxygen sensor, a nitrogen sensor and a phosphine sensor.

5. The granary limited space safety operation system according to any one of claims 1 to 4, characterized in that: The door comprises a left door and a right door which are arranged on the left and right sides, and the door stopper comprises a left stopper which is arranged corresponding to the left door and a right stopper which is arranged corresponding to the right door.

6. The granary limited space safety operation system according to claim 5 is characterized by: The guide movement of the warehouse door baffle rod is assembled on the baffle rod support, and baffle rod return springs are respectively arranged between the baffle rod support and the left baffle rod and the right baffle rod to force the corresponding baffle rod to move toward the avoidance position. The baffle rod push rod is provided with a pushing inclined surface for pushing the bottom of the left baffle rod and the right baffle rod when the baffle rod push rod moves to the left, so that the left baffle rod and the right baffle rod move upward to the stop position.

7. The granary limited space safety operation system according to claim 6 is characterized by: The push rod driving mechanism comprises a horizontally arranged electric push rod, which is connected to the right end of the stop rod push rod.

8. The granary limited space safety operation system according to claim 6 is characterized by: The blocking rod push rod is provided with a push rod through hole for the interlocking rod to pass through in the up and down direction, and the warehouse wall of the warehouse body is provided with an interlocking rod driving mechanism for driving the interlocking rod to move the window door up and down.

9. The granary limited space safety operation system according to claim 8 is characterized by: The interlocking rod driving mechanism comprises a driving nut whose rotation axis extends in the up-down direction. The driving nut is driven by a driving motor and is threadably matched with the interlocking rod.

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