Valve for air chute

Abstract

The utility model discloses a valve for an air chute, which is used for being installed at the outlet of each branch of the air chute, the valve comprises a valve shell installed at the outlet, the valve shell is internally provided with a containing cavity, the containing cavity is internally provided with breathable cloth, and the breathable cloth is provided with an air inlet. The containing cavity is divided into a material channel located on the upper portion and an air flow channel located on the lower portion through the breathable cloth, a valve body for opening or closing the material channel through swinging is arranged in the material channel, and a driving mechanism for driving the valve body is arranged outside the valve shell. The sealing device is simple in structure, flexible to open and close, small in occupied space, good in sealing effect and easy to install and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of powder material conveying, in particular to a valve for an air chute. Background Art

[0002] An air conveying chute is a continuous pneumatic conveying device for obliquely downward conveying dry powdery materials. When conveying materials, the materials enter the material channel, and at the same time, air is blown into the air flow channel by the air inlet system. The air makes the materials suspended between the material particles through the air-permeable cloth with dense pores. Due to the downward slope of the chute body, the suspended materials slide forward along the chute body under the combined action of their own gravity and aerodynamic force to achieve the conveying purpose. Air chute conveying often forms many branches, which requires the use of valves to open or close for control. The existing valve is of a plug plate structure, and the opening and closing of each branch of the air chute are controlled by pulling the valve up and down by a cylinder. However, the valve has a large volume, making installation difficult. At the same time, in order to protect the cylinder and the valve, it is often necessary to set up a rain shelter above the cylinder and the valve to cover them, making the overall height of the valve relatively high and occupying a large space. And with long-term use, the valve opens and closes repeatedly, and the materials remaining on the air-permeable cloth become stiff and caked due to extrusion. When the material blocks on the air-permeable cloth accumulate to a certain extent under the valve, they will form a supporting layer, resulting in a gap between the lower edge of the valve and the air-permeable cloth. This gap will cause the valve to be unable to completely seal the material channel, resulting in the phenomenon of "valve elevation", and causing the problem of material leakage during subsequent feeding. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a valve for an air chute, which has a simple structure, is flexible in opening and closing, occupies a small space, and has a good sealing effect.

[0004] The purpose of the utility model can be realized by the following technical solutions:

[0005] A valve for an air chute is used for being installed at the outlet of each branch of the air chute. The valve includes a valve housing installed at the outlet. The valve housing has an accommodation cavity. An air-permeable cloth is arranged in the accommodation cavity. The air-permeable cloth divides the accommodation cavity into a material channel located in the upper part and an air flow channel located in the lower part. A valve body for opening or closing the material channel by swinging is arranged in the material channel. A driving mechanism for driving the valve body is arranged outside the valve housing.

[0006] Compared with the prior art, the valve body of the present utility model is arranged inside the valve housing and is driven by a driving mechanism outside the valve housing, which can reduce the occupied space and has flexible opening and closing. The valve body swings downward, so that during the downward swing of the valve body, the lower edge of the valve body scrapes away the residual materials on the breathable cloth, avoiding the stiffness and caking of the residual materials caused by the long-term opening and closing of the valve body, and preventing the generation of gaps between the lower edge of the valve body and the breathable cloth, which may lead to the inability of the valve body to completely seal the material passage. It has a simple structure, is easy to install, and has a good sealing effect.

[0007] In a specific embodiment of the present utility model: A pair of bearing seats are symmetrically arranged on both sides of the upper part of the valve housing. The valve body is installed on the two bearing seats through a rotating shaft, and one end of the rotating shaft extends outside the valve housing and is connected to the driving mechanism.

[0008] In a specific embodiment of the present utility model: The valve body is made of carbon steel material.

[0009] In a specific embodiment of the present utility model: A plurality of reinforcing ribs are provided on the back surface of the valve body. By adopting the above technical solution, the reinforcing ribs can improve the structural strength of the valve body.

[0010] In a specific embodiment of the present utility model: A round pipe is provided at the bottom of the back surface of the valve body, and the bottom surface of the round pipe slightly exceeds the lower edge of the valve body. By adopting the above technical solution, when the valve body is driven to swing downward, the bottom surface of the round pipe first contacts the breathable cloth, and during the downward swing of the valve body, the materials on the breathable cloth are scraped away without material residue. Moreover, the round pipe can compact the breathable cloth without generating gaps, and has a good sealing effect. At the same time, the round pipe is of an arc-shaped structure and will not damage the breathable cloth when scraping materials.

[0011] In a specific embodiment of the present utility model: The driving mechanism includes a cylinder and a swing rod. The upper end of the swing rod is connected to the rotating shaft, and the lower end is connected to the cylinder.

[0012] In a specific embodiment of the present utility model: Wool felts are provided on the four peripheral edges of the valve body. The wool felt has good elasticity and softness, can closely fit the four peripheral edges of the valve body, and thus effectively prevent material leakage. Moreover, the wool felt not only has good wear resistance, can resist the friction and wear generated during the frequent opening and closing of the valve body, has a long service life, and has strong adaptability, and can meet the size and sealing requirements of different valve bodies.

[0013] In a specific embodiment of the present utility model: The breathable cloth is integrally woven with synthetic fiber as the raw material. Synthetic fiber has the advantages of light texture, good air permeability and wear resistance.

[0014] In summary, the valve of the utility model for the air chute has a simple structure, is flexible to open and close, occupies a small space, has a good sealing effect, and is easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below with reference to the accompanying drawings.

[0016] Figure 1 is a schematic structural diagram of a valve for an air chute of the present utility model;

[0017] Figure 2 shows that the valve body is driven to swing downward;

[0018] Figure 3 is a schematic structural diagram of the driving mechanism of the present utility model;

[0019] Figure 4 is Figure 2 an enlarged view of part A in

[0020] Figure 5 shows the outlet of the valve installation branch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1 and Figure 2 As shown, the present utility model is a valve for an air chute, which is used to be installed at the outlet of each branch 7 of the air chute. The valve 10 includes a valve housing 11 installed at the outlet. The valve housing 11 has a receiving cavity 12 therein. A breathable cloth 13 is provided in the receiving cavity 12. The breathable cloth 13 divides the receiving cavity 12 into a material channel 14 located in the upper part and an air flow channel 15 located in the lower part. The material channel 14 is for the flow of materials; air is introduced into the air flow channel 15. There is an air inlet 151 at the lower end of the air flow channel 15, and a flange 152 for connecting with the air inlet system is provided at the air inlet 151.

[0023] In this embodiment, the breathable cloth 13 is integrally woven with synthetic fiber as the raw material. Synthetic fiber has the advantages of light texture, good air permeability and wear resistance.

[0024] A valve body 16 for opening or closing the material passage 14 by swinging is provided in the material passage 14. In this embodiment, the valve body is made of carbon steel material. The carbon steel material has the advantages of high strength, good wear resistance, and easy processing.

[0025] As Figure 1 shown, in this embodiment, a plurality of reinforcing ribs 161 are provided on the back surface of the valve body 16. By adopting the above technical solution, the reinforcing ribs can improve the structural strength of the valve body.

[0026] As Figure 1 and Figure 3 shown, on both sides of the upper part of the valve housing 11, a pair of bearing seats 111 are symmetrically arranged. The valve body 16 is mounted on the two bearing seats 111 through a rotating shaft 17. A shaft sleeve is provided between the valve body 16 and the rotating shaft 17. An actuating mechanism 20 for driving the valve body 16 to swing up and down is provided outside the valve housing 11. One end of the rotating shaft 17 extends out of the valve housing 11 and is connected to the actuating mechanism 20.

[0027] The actuating mechanism 20 includes a cylinder 21 and a swing rod 22. The upper end of the swing rod 22 is connected to the rotating shaft 17, and the lower end is connected to the cylinder 21. A rain shelter is also provided above the cylinder 21.

[0028] Among them, wool felts 18 are provided on the four peripheries of the valve body 16. The wool felts have good elasticity and softness, can closely fit the four peripheries of the valve body 16, thereby effectively preventing material leakage. Moreover, the wool felts not only have good wear resistance, can resist the friction and wear generated during the frequent opening and closing of the valve body, have a long service life, but also have strong adaptability and can meet the size and sealing requirements of different valve bodies.

[0029] As Figure 2 and Figure 4 shown, in addition, a round tube 19 is provided at the bottom of the back surface of the valve body 16. The bottom surface of the round tube slightly exceeds the lower edge of the valve body. By adopting the above technical solution, when the valve body is driven to swing downward, the bottom surface of the round tube first contacts the breathable cloth, and during the downward swing of the valve body, the material on the breathable cloth is scraped away, without material residue, avoiding the stiffness and caking of the residual material due to the frequent opening and closing of the valve body for a long time, resulting in a gap between the lower edge of the valve body and the breathable cloth, causing the valve body to be unable to completely close the material passage and resulting in a material leakage phenomenon. Moreover, the round tube can compact the breathable cloth without generating a gap, and has a good sealing effect. At the same time, since the round tube is an arc-shaped structure, the breathable cloth will not be damaged during scraping.

[0030] Combined with Figure 5As shown in the figure, during operation, the driving mechanism 20 is activated to drive the valve body 16 to swing upward, and the material passage 14 is opened. Materials enter the material passage 14 at the outlet of the branch 7 from the feed inlet 801 of the chute tee 8. Air is introduced into the air passage 14 by the air inlet system, and the materials are blown up into a suspended state through the breathable cloth 13. Due to the downward slope of the trough body, the suspended materials slide forward along the trough body under the combined action of their own gravity and air power and enter the next section of equipment. By adjusting the opening angle of the valve body, the conveying volume of the materials can be adjusted. After the feeding is completed, the air inlet system stops, and the driving mechanism 20 drives the valve body 16 to swing downward. During the downward swing of the valve body 16, the round tube 19 scrapes off the residual materials on the breathable cloth. When the valve body 16 is completely closed, the felt 18 around the valve body 16 contacts the inner wall of the material passage 14 and the breathable cloth respectively, and at the same time, the round tube 19 presses on the breathable cloth, so as to ensure that the material passage is completely sealed in the closed state of the valve body 16.

[0031] In summary, the valve for an air chute of the present utility model has a simple structure, is flexible in opening and closing, occupies a small space, has a good sealing effect, and is easy to install and maintain.

[0032] The above has described in detail an embodiment of the present utility model, but the content described is only the preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. A valve for an air chute, which is used to be installed at the outlet of each branch of the air chute, and is characterized in that, The valve includes a valve housing installed at the outlet. There is a receiving cavity inside the valve housing. An air-permeable cloth is provided in the receiving cavity. The air-permeable cloth divides the receiving cavity into a material passage located in the upper part and an air flow passage in the lower part. A valve body for opening or closing the material passage by swinging is provided in the material passage. A driving mechanism for driving the valve body is provided outside the valve housing.

2. The valve for an air chute according to claim 1, characterized in that, A pair of bearing seats are symmetrically arranged on both sides of the upper part of the valve housing. The valve body is installed on the two bearing seats through a rotating shaft. One end of the rotating shaft extends outside the valve housing and is connected to the driving mechanism.

3. The valve for an air chute according to claim 1, characterized in that, The valve body is made of carbon steel material.

4. The valve for an air chute according to claim 1, characterized in that, A plurality of reinforcing ribs are provided on the back surface of the valve body.

5. The valve for an air chute according to claim 1, characterized in that, A round pipe is provided at the bottom of the back surface of the valve body, and the bottom surface of the round pipe slightly exceeds the lower edge of the valve body.

6. The valve for an air chute according to claim 1, characterized in that, The driving mechanism includes a cylinder and a swing rod. The upper end of the swing rod is connected to the rotating shaft, and the lower end is connected to the cylinder.

7. The valve for an air chute according to claim 1, characterized in that, Wool felt is provided on the periphery of the valve body.

8. The valve for the air chute according to claim 1, characterized in that, The air-permeable cloth is integrally woven with synthetic fiber as the raw material.

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