Air chute inspection hole cover plate

Abstract

The utility model relates to an air chute inspection hole cover plate which comprises a cover plate body covering an inspection hole of an air chute, the cover plate body comprises a sealing cover, a threaded rod and a rotating disc, the sealing cover is arranged at the bottom of the threaded rod, and the rotating disc is arranged at the top end of the threaded rod; supports are arranged on the two sides of the inspection hole respectively, a pressing plate is arranged between the two supports, a threaded hole is formed in the middle of the pressing plate, a threaded rod penetrates through the threaded hole to be in threaded connection with the pressing plate, an annular protrusion is arranged on the inspection hole, and an annular groove matched with the annular protrusion is formed in the bottom of the sealing cover. The sealing of the inspection hole is realized by embedding the annular bulge and the annular groove, and the inspection hole can be opened and closed only by rotating the turntable and lifting the sealing cover relative to the pressing plate without any tool, so that the operation is convenient and fast, and the sealing performance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic conveying, in particular to an air chute inspection hole cover plate. Background Art

[0002] Air conveying chutes are widely used as part of pneumatic conveying systems to transport powdered materials from one location to another. The upper part of such a system is usually responsible for conveying materials, while the lower part conveys air. The system has strict requirements on air tightness, and dust leakage must be prevented to protect the environment, while air leakage must also be avoided to ensure effective material transportation.

[0003] At present, the cover plates used to seal the inspection holes on the air conveying chute are mostly sealed with rubber plates and fixed with bolts. When the inspection hole of the air conveying chute needs to be opened for inspection, the staff must first remove all the bolts before removing the cover plate. After the inspection is completed, all the bolts need to be installed and tightened again. This process is not only time-consuming, but also prone to missing bolts, which will cause dust and air leakage. Utility Model Content

[0004] The utility model aims to provide an air chute inspection hole cover plate to solve the above problems existing in the prior art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] An air chute inspection hole cover plate comprises a cover plate arranged on the inspection hole of the air chute, the cover plate comprising a sealing cover, a threaded rod and a turntable, the sealing cover is arranged at the bottom of the threaded rod, and the turntable is arranged at the top of the threaded rod; brackets are arranged on both sides of the inspection hole, a pressure plate is arranged between the two brackets, a threaded hole is arranged in the middle of the pressure plate, the threaded rod passes through the threaded hole and is threadedly connected to the pressure plate, an annular protrusion is arranged on the inspection hole, and an annular groove matching the annular protrusion is arranged at the bottom of the sealing cover.

[0007] The beneficial effects of the utility model are:

[0008] The sealing of the inspection hole is achieved by inlaying the annular protrusion and the annular groove, and the opening and closing of the inspection hole only requires rotating the turntable to lift the sealing cover relative to the pressure plate, without the aid of any tools, and is easy to operate and has good sealing performance.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, a rubber pad is arranged in the annular groove.

[0011] Furthermore, the cross section of the rubber pad is in an inverted U shape.

[0012] Furthermore, sealing rings are provided on the inner side and the outer side of the annular protrusion.

[0013] Furthermore, the two brackets are a support rod and a clamping plate, the clamping plate is horizontally provided with a clamping slot, one end of the pressure plate is horizontally rotatably connected to the support rod, and the other end is clamped to the clamping slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the cover opening structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the closing structure of the cover plate of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the clamping plate of the utility model.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Inspection hole, 11. Annular protrusion, 12. Sealing ring, 2. Cover plate, 21. Sealing cover, 211. Annular groove, 22. Threaded rod, 23. Turntable, 3. Support rod, 4. Snap-on plate, 41. Slot, 5. Pressing plate, 6. Rubber pad. DETAILED DESCRIPTION

[0019] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0020] like Figures 1 to 3 As shown, an air chute inspection hole cover plate includes a cover plate 2 arranged on the inspection hole 1 of the air chute, the cover plate 2 includes a sealing cover 21, a threaded rod 22 and a turntable 23, the sealing cover 21 is arranged at the bottom of the threaded rod 22, and the turntable 23 is arranged at the top of the threaded rod 22; brackets are arranged on both sides of the inspection hole 1, a pressure plate 5 is arranged between the two brackets, a threaded hole is arranged in the middle of the pressure plate 5, the threaded rod 22 passes through the threaded hole and is threadedly connected with the pressure plate 5, an annular protrusion 11 is arranged on the inspection hole 1, and an annular groove 211 matching the annular protrusion 11 is arranged at the bottom of the sealing cover 21.

[0021] The sealing of the inspection hole 1 is achieved by inlaying the annular protrusion 11 with the annular groove 211, and the opening and closing of the inspection hole 1 only requires rotating the turntable 23 to raise and lower the sealing cover 21 relative to the pressure plate 5, without the need for any tools, and is easy to operate and has good sealing performance.

[0022] Embodiment 2 of the utility model is an air chute inspection hole cover plate. Based on embodiment 1, a rubber pad 6 is arranged in the annular groove 211 .

[0023] The sealing connection between the annular groove 211 and the annular protrusion 11 is further improved.

[0024] Embodiment 3 of the utility model is an air chute inspection hole cover plate. Based on Embodiment 1 or 2, the cross section of the rubber pad 6 is inverted U-shape.

[0025] The rubber pad 6 with an inverted U-shaped cross section can completely fill the gap between the contact surfaces of the annular protrusion 11 and the annular groove 211 , further improving the sealing connection between the annular groove 211 and the annular protrusion 11 .

[0026] Embodiment 4 of the utility model is an air chute inspection hole cover plate. Based on any one of embodiments 1 to 3, sealing rings 12 are provided on the inner and outer sides of the annular protrusion 11.

[0027] The sealing ring 12 fills the gap between the notch end surface of the annular groove 211 and the contact surface of the inspection hole 1 , further improving the sealing performance of the inspection hole 1 .

[0028] Embodiment 5 of the utility model is an air chute inspection hole cover plate. On the basis of any one of embodiments 1 to 4, the two brackets are a support rod 3 and a clamping plate 4. A clamping groove 41 is horizontally opened on the clamping plate 4. One end of the pressure plate 5 is horizontally rotatably connected to the support rod 3, and the other end is clamped to the clamping groove 41.

[0029] By rotating the threaded rod 22 and moving the sealing cover 21 to the upper end of the annular protrusion 11, the pressure plate 5 can be rotated relative to the support rod 3, and then the pressure plate 5 and the sealing cover 21 can be removed from the upper end of the inspection hole, making it convenient for the staff to inspect and repair the air conveying chute from the inspection hole.

[0030] In a specific implementation, the pressing plate 5 and the supporting rod 3 are connected to each other in a horizontal rotation manner through a hinge.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air chute inspection hole cover plate, characterized in that: The invention comprises a cover plate (2) which is arranged on an inspection hole (1) of an air chute, wherein the cover plate (2) comprises a sealing cover (21), a threaded rod (22) and a rotating disk (23), wherein the sealing cover (21) is arranged at the bottom of the threaded rod (22), and the rotating disk (23) is arranged at the top of the threaded rod (22); brackets are arranged on both sides of the inspection hole (1), a pressure plate (5) is arranged between the two brackets, a threaded hole is arranged in the middle of the pressure plate (5), the threaded rod (22) passes through the threaded hole and is threadedly connected to the pressure plate (5), an annular protrusion (11) is arranged on the inspection hole (1), and an annular groove (211) matching the annular protrusion (11) is arranged at the bottom of the sealing cover (21).

2. The air chute inspection hole cover plate according to claim 1, characterized in that: A rubber pad (6) is arranged in the annular groove (211).

3. The air chute inspection hole cover plate according to claim 2, characterized in that: The cross section of the rubber pad (6) is in an inverted U shape.

4. The air chute inspection hole cover plate according to claim 1, characterized in that: Sealing rings (12) are provided on the inner side and the outer side of the annular protrusion (11).

5. The air chute inspection hole cover plate according to any one of claims 1 to 4, characterized in that: The two brackets are respectively a support rod (3) and a clamping plate (4); a clamping slot (41) is horizontally provided on the clamping plate (4); one end of the pressing plate (5) is horizontally rotatably connected to the support rod (3), and the other end is clamped to the clamping slot (41).

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