Granary internal oxygen concentration monitoring device

Abstract

A granary internal oxygen concentration monitoring device comprises a monitoring pipe and a feeler lever inserted in the monitoring pipe, a plurality of vent holes are formed in the pipe wall of the monitoring pipe, filter screens are arranged on the outer sides of the vent holes, the monitoring pipe is vertically inserted in a grain pile of a granary, and the upper portion of the monitoring pipe is connected with the inner wall of the granary through a connecting piece; a plurality of sealing covers and oxygen concentration detection devices are arranged on the probe rod in the length direction of the probe rod, the sealing covers and the oxygen concentration detection devices are sequentially and alternately distributed from top to bottom, and the uppermost sealing cover is located in the monitoring pipe; the oxygen concentration detection device is detachably connected with the probe rod, and the position of the oxygen concentration detection device on the probe rod is adjustable. According to the utility model, each oxygen concentration detection device is respectively arranged between the two sealing covers, the two adjacent sealing covers and the corresponding pipe wall of the monitoring pipe form an independent oxygen concentration detection cavity, and when the monitoring pipe is inserted into a grain pile, the sealing covers can separate the upper end of the monitoring pipe from air above the grain pile, so that the monitoring effect is improved. And the influence of air outside the grain pile on oxygen concentration detection in the grain pile is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of grain storage, in particular to a device for monitoring oxygen concentration inside a grain bin. Background Art

[0002] Grain is usually stored in granaries for a long time. To ensure the safety and stability of the grain storage environment, it is necessary to regularly test various parameters such as temperature, humidity or oxygen concentration in the granary. Among them, oxygen concentration detection is one of the key factors for whether grain can be stored safely.

[0003] The prior art generally detects oxygen concentration in a grain silo by first inserting a monitoring tube with air holes into the grain pile, then inserting a detection rod equipped with an oxygen detection sensor into the monitoring tube, and detecting the oxygen concentration in the grain pile through the oxygen detection sensor. The oxygen detection sensor is installed on the detection rod by bolts, and the position of the oxygen detection sensor on the detection rod is adjusted by removing the bolts, so that the oxygen detection sensor can detect at different depths in the grain pile. However, the upper end of the monitoring tube in the prior art is connected to the air above the grain pile, and the air above the grain pile is connected and mixed with the air in the grain pile, which will affect the detection data of the oxygen detection sensor; and the method of fixing the oxygen detection sensor by bolts is relatively troublesome to disassemble and install, and it is not convenient to adjust the position of the oxygen detection sensor on the detection rod. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a device for monitoring the oxygen concentration inside a granary.

[0005] The technical solution of this utility model is as follows:

[0006] A device for monitoring oxygen concentration inside a granary comprises a monitoring tube and a probe inserted therein, a plurality of vents are provided in the middle and lower part of the wall of the monitoring tube, a filter screen is provided outside the vents, a tube section of the monitoring tube with the vents is vertically inserted in a grain pile in the granary, and an upper part of the monitoring tube is connected to the inner wall of the granary through a connecting piece;

[0007] A plurality of sealing covers and oxygen concentration detection devices are arranged on the probe rod along its length direction. The sealing covers and oxygen concentration detection devices are alternately arranged from top to bottom. The top sealing cover is located in the monitoring tube. A first sealing ring is arranged on the outer side of the sealing cover. The first sealing ring is adapted to the inner wall of the monitoring tube.

[0008] The oxygen concentration detection device is detachably connected to the probe rod, and the position of the device on the probe rod is adjustable.

[0009] A plurality of oxygen concentration detection devices are provided on a probe rod vertically arranged in the monitoring tube. The oxygen concentration detection devices are located at different heights of the probe rod and can therefore be located at different depths in the grain pile. Each oxygen concentration detection device is separated by a sealing cover, and the sealing cover can separate the upper end of the monitoring tube from the air outside the grain pile, thereby reducing the influence of the air outside the grain pile on the oxygen concentration detection in the grain pile, and the oxygen concentration detection device is easy to disassemble and reposition.

[0010] The oxygen concentration detection device is installed on the probe rod in the following manner: the oxygen concentration detection device is connected to the probe rod through an adjustment component; the adjustment component and the oxygen concentration detection device are arranged on both sides of the probe rod along the length direction; and the adjustment component is plugged into the probe rod.

[0011] Regarding the specific structure of the adjustment component, the adjustment component includes a connector inserted on the probe rod and a connecting rod passing through the connector and connected to the oxygen concentration detection device, and the connecting rod is slidably connected with the connector.

[0012] The above-mentioned method of achieving position adjustment of the oxygen concentration detection device through the adjustment component is that the probe rod is provided with a plurality of sockets adapted to the connector along the length direction.

[0013] To facilitate the adjustment of the position of the oxygen concentration detection device, a slide is provided in the middle of the probe rod along the length direction, and one end of the connecting rod passes through the slide and is connected to the oxygen concentration detection device. It is only necessary to move the connector away from the oxygen concentration detection device and disengage it from the socket, and move the connecting rod up and down along the slide to adjust the position of the oxygen concentration detection device. There is no need to completely remove the connector and the connecting rod from the probe rod.

[0014] Regarding the connection structure between the oxygen concentration detection device and the connector, a ring is sleeved on the outside of the oxygen concentration detection device, and the ring is connected to the connector through an elastic member sleeved on the connecting rod to avoid damage caused by direct connection between the oxygen concentration detection device and the connector.

[0015] The collar is mounted on the housing of the oxygen concentration detection device. In order to reduce the excessive tilting of the collar on one side of the probe rod due to the weight of the oxygen concentration detection device, a plurality of slots are provided along the length direction on the side of the probe rod close to the collar. The collar can be inserted into the slots on the side close to the probe rod to reduce the excessive tilting of the collar and the oxygen concentration detection device.

[0016] The card slot is arranged in a position where the card slot and the socket are arranged correspondingly and are located in the same horizontal plane. When the sleeve ring is installed in the corresponding card slot, it is convenient to insert the plug rod into the corresponding socket at the same time.

[0017] The beneficial effects of the present invention are:

[0018] A plurality of oxygen concentration detection devices are installed at different positions of the vertically arranged probe rod, which can simultaneously monitor the oxygen concentration at different depths in the grain pile, and each oxygen concentration detection device is respectively arranged between two sealing covers, and two adjacent sealing covers and the tube wall corresponding to the monitoring tube form a separate oxygen concentration detection cavity. When the monitoring tube is inserted in the grain pile, the sealing cover can separate the upper end of the monitoring tube from the air above the grain pile, thereby reducing the influence of the air outside the grain pile on the oxygen concentration monitoring in the grain pile;

[0019] The oxygen concentration detection device is connected to the probe rod through an adjustment component, and the adjustment component is inserted into the probe rod. When the position of the oxygen concentration detection device needs to be replaced or adjusted, the plug-in rod can be directly pulled out and the plug-in rod can be inserted into a socket at a suitable height to adjust the position of the oxygen concentration detection device. The probe rod is inserted into the monitoring tube, which can achieve the effect of monitoring the oxygen concentration at different depths in the grain pile. Compared with the prior art, which requires disassembly of bolts for disassembly or replacement of the position, the utility model improves the disassembly and installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the attached picture:

[0021] Figure 1 It is a schematic diagram of a partial cross-sectional structure;

[0022] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0023] Figure 3 It is a schematic diagram of the internal structure;

[0024] Figure 4 for Figure 3 The enlarged structural diagram at B in the middle;

[0025] Figure 5 It is a schematic diagram of the connection structure of the collar and the connector;

[0026] The components represented by the reference numerals in the figure are:

[0027] 1. Monitoring tube; 2. Probe rod; 3. Vent hole; 4. Sealing cover; 5. First sealing ring; 6. Oxygen concentration detection device; 7. Connector; 71. Connecting plate; 72. Plug rod; 8. Connecting rod; 9. Socket; 10. Slide; 11. Ring; 12. Slot; 13. Limiting plate; 14. Elastic member. DETAILED DESCRIPTION

[0028] See also Figure 1The device for monitoring oxygen concentration inside a granary shown in the figure comprises a monitoring tube 1 and a probe rod 2 inserted therein. A plurality of vents 3 are provided in the middle and lower part of the wall of the monitoring tube 1. A filter net is provided outside the vents 3. The filter net can prevent grain from entering the monitoring tube 1. The bottom end of the monitoring tube 1 is a conical structure. The monitoring tube 1 is vertically inserted into the grain pile of the granary. The upper part of the monitoring tube 1 is located above the grain pile and is connected to the inner wall of the granary through a connector. When inserted, the uppermost vent 3 is located inside the grain pile. A limit plate 13 is provided at the lower part of the monitoring tube 1. A long groove is provided through the middle part of the limit plate 13. The long groove is matched with the probe rod 2. The lower part of the probe rod 2 is inserted into the long groove to play a positioning role and prevent the probe rod 2 from sliding down further.

[0029] See also Figure 2 As shown, a plurality of sealing covers 4 and oxygen concentration detection devices 6 are arranged on the probe rod 2 along its length direction. The oxygen concentration detection device 6 is an oxygen concentration detection sensor, which is electrically connected to an external industrial control machine. A first sealing ring 5 is arranged on the outer side of the sealing cover 4. The first sealing ring 5 is adapted to the inner wall of the monitoring tube 1. The sealing covers 4 and the oxygen concentration detection devices 6 are alternately distributed from top to bottom, so that each oxygen concentration detection device 6 is separated by the sealing covers 4 respectively, and the uppermost sealing cover 4 is located in the monitoring tube 1. The uppermost first sealing ring 5 and the corresponding sealing cover 4 are connected to the inner wall of the monitoring tube 1. The connection part with the monitoring tube 1 is not provided with a vent 3, which can block the air above and inside the grain pile, thereby reducing the influence of the air above the grain pile on the oxygen concentration detection in the grain pile.

[0030] The oxygen concentration detection device 6 is detachably connected to the probe rod 2, and its position on the probe rod 2 is adjustable. By adjusting the oxygen concentration detection device 6 at different positions of the probe rod 2, the oxygen concentration detection device 6 can detect the oxygen concentration at different depths in the grain pile.

[0031] See also Figure 3 and Figure 4 As shown, the oxygen concentration detection device 6 is installed on the probe rod 2 in such a manner that the oxygen concentration detection device 6 is connected to the probe rod 2 through an adjustment component, the adjustment component and the oxygen concentration detection device 6 are arranged on both sides of the probe rod 2 along the length direction, and the adjustment component is plugged into the probe rod 2. Regarding the specific structure of the adjustment component, the adjustment component includes a connector 7 inserted on the probe rod 2 and a connecting rod 8 passing through the connector 7 and connected to the oxygen concentration detection device 6, and the connecting rod 8 is slidably connected to the connector 7. Regarding the specific structure of the connector 7, the connector 7 includes a connecting plate 71 and an insert rod 72, the connecting plate 71 is arranged horizontally, the length direction of the connecting rod 8 is consistent with the width direction of the probe rod 2, the insert rod 72 is arranged at both ends of the connecting rod 8, the connecting rod 8 is arranged perpendicular to the connecting plate 71, and vertically passes through the connecting plate 71 to be fixedly connected to the ring 11, a through hole is provided in the middle position of the connecting plate 71, and the connecting rod 8 is slidably connected in the through hole.

[0032] See also Figure 3 As shown, the above-mentioned method of adjusting the position of the oxygen concentration detection device 6 by adjusting the assembly is that the probe rod 2 is provided with a plurality of sockets 9 adapted to the plug connector 7 along the length direction. The sockets 9 of this embodiment are vertically arranged in two rows, and each row is provided with a plurality of sockets 9 at equal intervals. The two rows of sockets 9 are symmetrically arranged, so that the plug rods 72 on both sides of the connecting plate 71 can be inserted into the two sockets 9 on the same horizontal plane, thereby inserting the connecting plate 71 on the probe rod 2.

[0033] To facilitate the adjustment of the position of the oxygen concentration detection device 6, a slide 10 is opened in the middle of the probe rod 2 along the length direction, and two rows of sockets 9 are located on both sides of the slide 10. One end of the connecting rod 8 passes through the slide 10 and is connected to the oxygen concentration detection device 6. It is only necessary to move the connector 7 away from the oxygen concentration detection device 6 and disengage from the socket 9, and move the connecting rod 8 up and down along the slide 10 to adjust the position of the oxygen concentration detection device 6. There is no need to completely remove the connector 7 and the connecting rod 8 from the probe rod 2.

[0034] See also Figure 3 and Figure 5 As shown, regarding the connection structure between the oxygen concentration detection device 6 and the connector 7, a collar 11 is sleeved on the outside of the oxygen concentration detection device 6, and the collar 11 is connected to the connector 7 through an elastic member 14 sleeved on the connecting rod 8, so as to avoid damage caused by the direct connection between the oxygen concentration detection device 6 and the connector 7. The elastic member 14 is a tension spring, and the two ends of the elastic member 14 are respectively connected to the collar 11 and the connecting plate 71, and the connector 7 can be separated from the socket 9 by pulling the connector 7 outward. After moving the connector 7 and the collar 11 to the appropriate position, the plug rod of the connector 7 is inserted into the corresponding socket 9, and the tension spring is reset to tighten the collar 11 and the connector 7, so as to improve the stability of the collar 11 and the oxygen concentration detection device 6.

[0035] See also Figure 3 and Figure 4 As shown, the collar 11 is sleeved on the housing of the oxygen concentration detection device 6. In order to reduce the excessive tilt of the collar 11 on the side of the probe rod 2 due to the weight of the oxygen concentration detection device 6, a plurality of slots 12 are provided along the length direction on the side of the probe rod 2 close to the collar 11. The collar 11 can be inserted into the slot 12 close to the side of the probe rod 2 to reduce the excessive tilt of the collar 11 and the oxygen concentration detection device 6. The slot 12 is arranged in a position that the slot 12 is arranged corresponding to the socket 9 and is located in the same horizontal plane. When the collar 11 is installed in the corresponding slot 12, it is convenient to insert the plug rod into the corresponding socket 9 at the same time.

Claims

1. A device for monitoring oxygen concentration inside a granary, characterized in that: The monitoring tube (1) comprises a monitoring tube (1) and a probe (2) inserted therein. The monitoring tube (1) has a plurality of vent holes (3) formed on its wall. The tube section with the vent holes (3) is vertically inserted into a grain pile in a granary, and its upper portion is connected to the inner wall of the granary via a connecting piece. A plurality of sealing covers (4) and oxygen concentration detection devices (6) are arranged on the probe rod (2) along its length direction. The sealing covers (4) and the oxygen concentration detection devices (6) are arranged alternately from top to bottom. The topmost sealing cover (4) is located inside the monitoring tube (1). A first sealing ring (5) is provided on the outer side of the sealing cover (4). The first sealing ring (5) is adapted to the inner wall of the monitoring tube (1). The oxygen concentration detection device (6) is detachably connected to the probe rod (2), and its position on the probe rod (2) is adjustable.

2. A device for monitoring oxygen concentration inside a granary according to claim 1, characterized in that: The oxygen concentration detection device (6) is connected to the probe rod (2) via an adjustment component. The adjustment component and the oxygen concentration detection device (6) are arranged on both sides of the probe rod (2) along the length direction. The adjustment component and the probe rod (2) are plugged.

3. A device for monitoring oxygen concentration inside a granary according to claim 2, characterized in that: The adjustment assembly comprises a plug-in connector (7) inserted into the probe rod (2) and a connecting rod (8) passing through the plug-in connector (7) and connected to the oxygen concentration detection device (6); the connecting rod (8) is slidably connected to the plug-in connector (7).

4. The device for monitoring oxygen concentration inside a granary according to claim 3, characterized in that: The probe rod (2) is provided with a plurality of insertion holes (9) matched with the plug-in connector (7) along the length direction.

5. The device for monitoring oxygen concentration inside a granary according to claim 3, characterized in that: A slideway (10) is provided in the middle of the probe rod (2) along the length direction, and one end of the connecting rod (8) passes through the slideway (10) and is connected to the oxygen concentration detection device (6).

6. The device for monitoring oxygen concentration inside a granary according to claim 3, characterized in that: A sleeve (11) is sleeved on the outside of the oxygen concentration detection device (6), and the sleeve (11) is connected to the connector (7) via an elastic member (14) sleeved on the connecting rod (8).

7. The device for monitoring oxygen concentration inside a granary according to claim 6, characterized in that: A plurality of slots (12) are provided on the side of the probe rod (2) close to the collar (11) along the length direction, and the collar (11) is adapted to the slots (12).

8. The device for monitoring oxygen concentration inside a granary according to claim 7, characterized in that: The card slot (12) and the plug hole (9) are arranged correspondingly and are located in the same horizontal plane.

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