Dust removal device capable of being automatically opened and closed

Abstract

A dust removal device capable of being automatically opened and closed comprises an air outlet, a bin cover hinged to the air outlet and a dust removal bag arranged on the air outlet and in a bag shape with a downward opening, and is characterized in that at least one point of the side face of the dust removal bag is connected to the bin cover, the bin cover is hinged to the air outlet, and the upper bag corner of the far end of the dust removal bag is connected with one end of a tension spring; and the other end of the tension spring is connected in the air outlet or on the bin cover. Compared with the prior art, the dust removal device has the technical effects that the dust removal device is provided with the tension spring, after air stops entering, the right side surface of the dust removal bag is pulled by the tension spring to return to a non-stretching state, and at the moment, the dust removal bag is integrally positioned on the inner side of an arc swept by the outer end part of the bin cover; the situation that the upper bag corner of the dust removal bag is overlapped on the edge of the feeding port is avoided, and the bin cover can be automatically covered.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder material storage and transportation, and specifically relates to a rotatable hydraulic support device and a silo made of the device. Background Art

[0002] Referring to Chinese patent document CN114772086A, when the mixture of air and bulk material is sent into the sealed chamber 100 through the outer port 401 of the outer breathing tube 420, the space of the sealed chamber 100 is larger and the air speed is reduced. At this time, the bulk material falls by gravity, and the air blows up the dust bag 500 (see the dust bag 500 in the middle position of Figure 7). At this time, compared with the effective filtering area of ​​an ordinary filter net, the dust bag 500 is in a three-dimensional shape, and its effective filtering area is larger. The speed of air passing through the dust bag is lower, and the force of the air carrying the material jacket is weak, thereby preventing the bulk material from escaping from the dust bag.

[0003] When conveying powder, some powder (usually tens of kilograms) will enter the dust bag 34. After the powder conveying operation is completed, the pressure in the bin body 10 is reduced, and the dust bag 34 will enter the bin body 10 under the action of the gravity of the powder, and then automatically cover the bin cover 32, which is also very convenient.

[0004] However, due to the uneven distribution of powder in the dust bag 34 and the fact that the dust bag 34 is not standardly vertical, during the process of "the dust bag 34 will enter the bin body 10 under the action of the gravity of the powder", the upper corner of the dust bag 34 may rest on the edge of the air outlet 30 instead of falling completely, resulting in the inability to automatically close the bin cover. Utility Model Content

[0005] The technical problem to be solved by the utility model is: how to design a dust removal device which can be opened and closed automatically, so as to facilitate the bin cover which cannot be closed automatically.

[0006] The technical solution of the utility model is specifically as follows:

[0007] A dust removal device that can be automatically opened and closed includes an air outlet, a bin cover hinged to the air outlet, a dust bag is provided on the air outlet, and the dust bag is in the shape of a bag with an opening downward. The device is characterized in that at least one point on the side of the dust bag is connected to the bin cover, the bin cover is hinged to the air outlet, a bag angle on the far end of the dust bag is connected to one end of a tension spring, and the other end of the tension spring is connected to the air outlet or the bin cover.

[0008] The dust bag is made of filter cloth.

[0009] The inlet edge of the dust removal bag is connected to the air outlet.

[0010] The inlet edge of the dust removal bag is sealed and connected to the air outlet.

[0011] The bin cover is connected to its opening and closing cover power mechanism, specifically: the opening and closing cover power mechanism is a bin cover cylinder, one end of the bin cover cylinder is hinged on the bin body, the other end of the bin cover cylinder is hinged on the bin cover plate, the bin cover plate is fixed on the bin cover shaft, the bin cover shaft is rotatably connected to the bin body, and the bin cover fixes the bin cover shaft.

[0012] The distal upper bag angle is fixedly connected to a ring, the ring fixes one end of the rope, and the other end of the rope is fixed on the tension spring.

[0013] The side of the dust removal bag is connected to the bin cover through a plurality of connecting rings, and the plurality of connecting rings are distributed in the middle and upper parts of the dust removal bag.

[0014] A circle of waterproof groove is arranged on the outside of the air outlet, the bottom of the waterproof groove is inclined, and a drainage hole is arranged at the lowest point.

[0015] Compared with the prior art, the technical effect of the utility model is that the utility model is provided with a tension spring. After the air stops entering, the right side of the dust bag returns to a less stretched state due to the traction of the tension spring. At this time, the dust bag as a whole is located on the inner side of the arc swept by the outer end of the bin cover, avoiding the situation where the upper bag corner of the dust bag rests on the edge of the feed port, so that the bin cover can be automatically closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main view of the silo.

[0017] Figure 2 A top view of the silo.

[0018] Figure 3 yes Figure 1 Enlarged view of the turntable with the center cover open. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] like Figure 1-3 An air outlet 30 is provided at the upper part of the bin body 10, and the air outlet 30 is hinged to the bin cover 32. A dust bag 34 is provided on the air outlet 30. The dust bag 34 is made of filter mesh and is in the shape of a bag with an opening downward. The inlet edge of the dust bag 34 is sealed and connected to the air outlet 30. Its function is: when conveying powder into the bin body 10, wind conveying is used, that is, a mixture of powder and air is pressed into the bin body 10, and the air escapes through the dust bag 34, and the powder falls into the bin body 10, completing the powder conveying operation.

[0021] When the powder is transported into the bin body 10, the air will blow up the dust bag 34 like a bag, so that the top and sides of the bag can allow air to escape.

[0022] like Figure 3At least one point on the side of the dust bag 34 is connected to the bin cover 32. The open state of the bin cover 32 is shown in label 321, and the closed state of the bin cover 32 is shown in label 322. The bin cover 32 is hinged to the air outlet 30 through the bin cover shaft 35. The distal upper bag corner of the dust bag 34 (the upper bag corner farthest from the bin cover shaft 35) is connected to one end of the tension spring 74, and the other end of the tension spring 74 is connected to the air outlet 30 or the bin cover 32.

[0023] like Figure 3 In order to reduce the length of the tension spring, the distal upper bag corner is fixedly connected to a ring 75 , the ring 75 fixes one end of a rope 76 , and the other end of the rope 76 is fixed to the tension spring 74 .

[0024] like Figure 3 The side of the dust removal bag 34 is connected to the bin cover 32 through a plurality of connecting rings 73 , and the plurality of connecting rings 73 are distributed in the middle and upper parts of the dust removal bag 34 .

[0025] The bin cover 32 is connected to its opening and closing cover power mechanism, specifically: the opening and closing cover power mechanism is a bin cover cylinder 72, one end of the bin cover cylinder 72 is hinged to the bin body 10, and the other end of the bin cover cylinder 72 is hinged to the bin cover plate 701, the bin cover plate 701 is fixed on the bin cover shaft 35, the bin cover shaft 35 is rotatably connected to the bin body 10, and the bin cover 32 fixes the bin cover shaft 35.

[0026] like Figure 1 In order to prevent rainwater, a waterproof groove 31 is arranged on the outside of the air outlet 30. The bottom of the waterproof groove 31 is inclined, and a drainage hole (not shown) is arranged at the lowest point.

[0027] Its working principle is:

[0028] When it works, it drives the bin cover oil cylinder 72 to retract its piston rod, and the piston rod pulls the bin cover plate 701 to rotate, and the bin cover shaft 35 and the bin cover 32 rotate synchronously, and the bin cover 32 gradually enters the open state, see reference numeral 321. However, the left side of the dust removal bag 34 is pulled up by the pull of the bin cover 32, and at the same time, the right side of the dust removal bag 34 is not stretched much by the pull of the tension spring 74.

[0029] When the mixture of powder and air is pressed into the bin body 10, the pressure in the bin body 10 increases, and the pressure overcomes the traction of the tension spring 74, and the dust bag 34 is fully stretched. Figure 3 As shown, the air escapes through the dust bag 34, and the powder falls into the bin body 10, completing the powder conveying operation.

[0030] After the air stops entering, the pressure in the bin body 10 decreases, and the left side of the dust bag 34 is pulled up by the bin cover 32. At the same time, the right side of the dust bag 34 returns to a less stretched state under the traction of the tension spring 74. At this time, the dust bag 34 is located as a whole on the inner side of the arc 323 swept by the outer end of the bin cover 32.

[0031] Finally, the bin cover cylinder 72 is driven to extend its piston rod, which pulls the bin cover plate 701 to rotate, and the bin cover shaft 35 and the bin cover 32 rotate synchronously. As the bin cover 32 gradually rotates, the dust removal bag 34 completely enters the air outlet 30, and the bin cover 32 finally enters a closed state, see label 322.

[0032] For other contents, please refer to the prior art.

[0033] The above-described embodiments are only preferred embodiments of the present invention. It should be noted that those skilled in the art may make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as within the protection scope of the present invention.

Claims

1. A dust removal device capable of automatically opening and closing, comprising an air outlet (30), the air outlet (30) being hingedly connected to a bin cover (32), a dust removal bag (34) being provided on the air outlet (30), the dust removal bag (34) being in the shape of a bag with an opening facing downward, and characterized in that: At least one point on the side of the dust removal bag (34) is connected to the bin cover (32), the bin cover (32) is hinged to the air outlet (30), the upper bag corner at the far end of the dust removal bag (34) is connected to one end of a tension spring (74), and the other end of the tension spring (74) is connected to the inside of the air outlet (30) or to the bin cover (32).

2. The dust removal device capable of automatic switching on and off according to claim 1, characterized in that: The dust removal bag (34) is made of filter cloth.

3. The dust removal device capable of automatic switching on and off as claimed in claim 2, characterized in that: The inlet edge of the dust removal bag (34) is connected to the air outlet (30).

4. The dust removal device capable of automatic switching on and off as claimed in claim 3, characterized in that: The inlet edge of the dust removal bag (34) is sealed and connected to the air outlet (30).

5. The dust removal device capable of automatic switching on and off according to claim 1, characterized in that: The bin cover (32) is connected to its opening and closing cover power mechanism, specifically: the opening and closing cover power mechanism is a bin cover oil cylinder (72), one end of the bin cover oil cylinder (72) is hinged on the bin body (10), the other end of the bin cover oil cylinder (72) is hinged on the bin cover plate (701), the bin cover plate (701) is fixed on the bin cover shaft (35), the bin cover shaft (35) is rotatably connected to the bin body (10), and the bin cover (32) is fixed to the bin cover shaft (35).

6. The dust removal device capable of automatic switching on and off as claimed in claim 1, characterized in that: The distal upper bag corner is fixedly connected to a ring member (75), the ring member (75) fixes one end of a rope (76), and the other end of the rope (76) is fixed to the tension spring (74).

7. The dust removal device capable of automatic switching on and off according to claim 1, characterized in that: The side surface of the dust removal bag (34) is connected to the bin cover (32) via a plurality of connection rings (73), and the plurality of connection rings (73) are distributed in the middle and upper parts of the dust removal bag (34).

8. The dust removal device capable of automatic switching on and off as claimed in claim 1, characterized in that: A circle of waterproof grooves (31) is provided outside the air outlet (30), the bottom of the waterproof grooves (31) is inclined, and a drainage hole is provided at the lowest point.

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