Conveying tank of pneumatic conveying system

Abstract

The utility model discloses a conveying tank of a pneumatic conveying system. The conveying tank comprises a tank body and a plurality of first air inlet pipes used for being connected with an external air source. A funnel is arranged at the lower part of the tank body; the first air inlet pipe is connected to the outer side face of the funnel and communicates with the interior of the funnel. All the first air inlet pipes are arranged in the tangential direction of the funnel, and communication points of the first air inlet pipes and the funnel are spirally arranged in the direction from top to bottom around the central axis of the funnel. According to the utility model, air can be blown into the funnel through the first air inlet pipe, and the blown air flow forms a vortex flow which flows along with the inner wall of the funnel, so that materials falling into the conveying tank can be driven to flow along with the vortex flow along with the wall without being attached to the inner wall of the funnel, and the conveying device is particularly suitable for conveying materials with adhesiveness and avoids the condition of material blockage.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic conveying systems, in particular to a conveying tank of a pneumatic conveying system. Background Art

[0002] The dilute-phase low-pressure pneumatic conveying system is a conveying method that uses gas as the medium and air pressure as the power to transport powder and granular materials from place A to place B through a pipeline. The pneumatic conveying system has a simple structure and convenient operation, and can be used for horizontal, vertical or inclined conveying. During the conveying process, physical operations such as heating, cooling, drying and air classification of materials, or certain chemical operations can also be carried out simultaneously, and it is widely used in various industrial environments.

[0003] Since the gas pressure of the whole system is relatively low, and the lower part of the conveying tank of the pneumatic conveying system is funnel-shaped, when the conveyed material is fine dust with adhesiveness, the material is particularly likely to accumulate in the lower part of the conveying tank, thereby causing material blockage. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a conveying tank of a pneumatic conveying system, which can solve the problems existing in the prior art and avoid the phenomenon of material blockage in the conveying tank.

[0005] In order to achieve the above object, the solution of the utility model is:

[0006] A conveying tank of a pneumatic conveying system includes a tank body and a plurality of first inlet pipes for connecting to an external air source; the lower part of the tank body is set as a funnel; the first inlet pipes are connected to the outer side surface of the funnel and communicate with the inside of the funnel; each first inlet pipe is arranged along the tangent direction of the funnel, and the connection points of the first inlet pipes and the funnel are arranged in a spiral shape in the up-down direction around the central axis of the funnel.

[0007] A flange is arranged at the air inlet end of the first inlet pipe.

[0008] An anti-bridging air hammer is installed on the outer side surface of the funnel.

[0009] A bent pipe is connected to the bottom of the funnel, and a second inlet pipe for connecting to an external air source is connected to the outer side surface of the bent pipe.

[0010] Preferably, an exhaust pipe is arranged at the top of the tank body, the exhaust pipe and the bent pipe are both communicated to a three-way joint, and an exhaust butterfly valve is arranged between the exhaust pipe and the tank body; the output end of the three-way joint is communicated to the material conveying pipeline of the pneumatic conveying system.

[0011] Preferably, a conveying stop valve is arranged between the bent pipe and the three-way joint.

[0012] Preferably, the conveying cut-off valve is an automatic ball valve.

[0013] A pressure relief butterfly valve is provided at the top of the tank body, and a pressure relief filter is provided at the output end of the pressure relief butterfly valve.

[0014] After adopting the above technical solution, the utility model has the following technical effects:

[0015] In the utility model, a plurality of first air inlet pipes are designed at the funnel of the tank body. The first air inlet pipes can be connected to an external air source, so as to realize blowing air into the funnel. And through the optimized design of the first air inlet pipes, they are tangent to the funnel, and the connection points of the first air inlet pipes and the inner wall of the funnel form a spiral line, so that the blown air flow forms a swirling flow flowing along the inner wall of the funnel, which can carry the materials falling into the conveying tank to flow along the wall with the swirling flow without adhering to the inner wall of the funnel. It is especially suitable for conveying adhesive materials and avoids the situation of material blockage. Description of the Drawings

[0016] Figure 1 is a perspective view of a specific embodiment of the utility model;

[0017] Figure 2 is a front view of a specific embodiment of the utility model;

[0018] Explanation of the reference numerals in the drawings:

[0019] 1 - tank body; 11 - funnel; 2 - first air inlet pipe; 21 - flange; 3 - anti - bridging air hammer; 4 - elbow; 5 - second air inlet pipe; 6 - exhaust pipe; 7 - three - way joint; 8 - exhaust butterfly valve; 9 - conveying cut - off valve; 10 - pressure relief butterfly valve; 20 - pressure relief filter. Detailed Embodiment

[0020] In order to further explain the technical solution of the utility model, the utility model will be elaborated in detail below through specific embodiments.

[0021] Refer to Figure 1-2 As shown, the utility model discloses a conveying tank of a pneumatic conveying system, which includes a tank body 1 and a plurality of first air inlet pipes 2 for connecting to an external air source;

[0022] The lower part of the tank body 1 is provided as a funnel 11;

[0023] The first air inlet pipes 2 are connected to the outer side surface of the funnel 11 and communicate with the inside of the funnel 11;

[0024] Each first air inlet pipe 2 is arranged along the tangent direction of the funnel 11, and the connection points of the first air inlet pipe 2 and the funnel 11 are arranged in a spiral shape around the central axis of the funnel 11 in the up - and - down direction.

[0025] Through the above solution, in the utility model, a number of first air inlet pipes 2 are designed at the funnel 11 of the tank body 1. The first air inlet pipes 2 can be connected to an external air source, so as to realize blowing air into the funnel 11. And through the optimized design of the first air inlet pipes 2, they are tangent to the funnel 11, and the connection points of the first air inlet pipes 2 and the inner wall of the funnel 11 form a spiral line, so that the blown air flow forms a swirling flow flowing along the inner wall of the funnel 11, which can drive the materials falling into the conveying tank to flow along the wall with the swirling flow without adhering to the inner wall of the funnel 11. It is especially suitable for conveying adhesive materials and avoids the situation of material blockage.

[0026] The following shows specific embodiments of the utility model.

[0027] A flange 21 for connecting a trachea is arranged at the air inlet end of the above-mentioned first air inlet pipe 2, and the trachea is communicated to an external air source.

[0028] An anti-bridging air hammer 3 is further installed on the outer side of the above-mentioned funnel 11, which can further prevent phenomena such as adhesion, blockage and bridging of materials in the funnel 11. The anti-blocking effect is better when it is combined with the first air inlet pipe 2.

[0029] A bent pipe 4 is connected to the bottom of the above-mentioned funnel 11, and a second air inlet pipe 5 for connecting an external air source is connected to the outer side of the bent pipe 4. By arranging the bent pipe 4, the conveying direction of the material can be changed from vertically downward to horizontally, and the material at the bent pipe 4 is prevented from being blocked by blowing through the second air inlet pipe 5.

[0030] Further, an exhaust pipe 6 is arranged at the top of the above-mentioned tank body 1. Both the exhaust pipe 6 and the bent pipe 4 are communicated to a three-way joint 7, and an exhaust butterfly valve 8 is arranged between the exhaust pipe 6 and the tank body 1; the output end of the three-way joint 7 is communicated to the material conveying pipeline of the pneumatic conveying system.

[0031] Secondly, a conveying stop valve 9 is arranged between the above-mentioned bent pipe 4 and the three-way joint 7. In this embodiment, the above-mentioned conveying stop valve 9 is an automatic ball valve.

[0032] A pressure relief butterfly valve 10 is arranged at the top of the above-mentioned tank body 1, and a pressure relief filter 20 is arranged at the output end of the pressure relief butterfly valve 10.

[0033] The above embodiments and drawings do not limit the product form and style of the utility model. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the utility model.

Claims

1. A delivery tank of a pneumatic conveying system, characterized in that: It includes a tank body and a number of first intake pipes for connecting to an external air source; The lower part of the tank body is set as a funnel; The first intake pipe is connected to the outer side of the funnel and communicates with the inside of the funnel; Each first intake pipe is arranged along the tangent direction of the funnel, and the connection points of the first intake pipe and the funnel are arranged in a spiral shape in the up-down direction around the central axis of the funnel.

2. The delivery tank of the pneumatic conveying system according to claim 1, characterized in that: A flange is provided at the intake end of the first intake pipe.

3. The delivery tank of the pneumatic conveying system according to claim 1, characterized in that: An anti-arching air hammer is installed on the outer side of the funnel.

4. The delivery tank of the pneumatic conveying system according to claim 1, characterized in that: A bent pipe is connected to the bottom of the funnel, and a second intake pipe for connecting to an external air source is connected to the outer side of the bent pipe.

5. The delivery tank of the pneumatic conveying system according to claim 4, characterized in that: An exhaust pipe is provided at the top of the tank body, the exhaust pipe and the bent pipe are both connected to a three-way joint, and an exhaust butterfly valve is provided between the exhaust pipe and the tank body; the output end of the three-way joint is connected to the material conveying pipeline of the pneumatic conveying system.

6. The delivery tank of the pneumatic conveying system according to claim 5, characterized in that: A delivery stop valve is provided between the bent pipe and the three-way joint.

7. The delivery tank of the pneumatic conveying system according to claim 6, characterized in that: The delivery stop valve is an automatic ball valve.

8. The delivery tank of the pneumatic conveying system according to claim 1, characterized in that: A pressure relief butterfly valve is provided at the top of the tank body, and a pressure relief filter is provided at the output end of the pressure relief butterfly valve.

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