Dust diffusion pipe and dust generation diffusion device thereof

Abstract

The invention discloses a dust diffusion pipe and a dust generation diffusion device thereof, the dust diffusion pipe comprises a dust generator, and further comprises a dilution air supply fan and a dust diffusion pipe, a dust outlet pipe of the dust generator is communicated with a dust-containing airflow nozzle, an air outlet of the dilution air supply fan is communicated with a dilution air inlet pipe, and the dust diffusion pipe comprises a flaring pipe section; the small-diameter end of the flaring pipe section is connected with a mixing pipe section, the mixing pipe section comprises a central pipe, communicating holes are formed in the pipe wall of the central pipe, an outer cover shell is fixedly welded to the outer portion of the central pipe, the outer cover shell and the central pipe are fixedly welded, all the communicating holes are wrapped by the outer cover shell, an air inlet cavity is formed, and a dilution air inlet pipe is arranged on the outer cover shell; a pipe end plate is detachably mounted at the upstream end of the central pipe, and a dust-containing airflow nozzle is detachably and fixedly mounted on the pipe end plate. According to the dust diffusion pipe and the dust generation diffusion device thereof, not only can dust and diluent gas be better and uniformly mixed, but also the dust-containing airflow nozzle is convenient to disassemble and replace, and the use is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of dust simulation, and in particular to a dust diffusion tube and a dust generating and diffusing device thereof. Background Art

[0002] In the field of dust simulation technology, dust generation is required, and generally, dust generation is performed by a dust generating device. For example, the invention patent with the authorization announcement number CN216524681U discloses a dust environment simulation device, wherein the dust simulator device includes a diffusion structure, and the diffusion structure is used to mix and diffuse the dust-containing gas emitted by the dust generating device with the dilution airflow generated by the blower. However, the diffusion structure of the dust simulation device still has the following problems: 1. In the diffusion structure, the nozzle of the dust generating device needs to be extended into the interior of the air intake main pipe for fixing. Therefore, when the nozzle is blocked, it is difficult to replace it; 2. The blower is directly connected to the end of the air intake main pipe. In order to ensure a sufficient amount of dilution gas, the air volume and wind speed blown by the blower need to meet certain requirements and be much larger than the flow rate and flow rate of the dust-containing gas emitted by the dust generating device. This causes the dilution gas to directly blow the dust-containing gas into the diffusion structure quickly, and the mixing of dust and gas after dust generation is uncontrollable and uneven. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a dust diffusion tube, which can not only facilitate better mixing of dust and dilution gas, but also facilitate the disassembly and replacement of the dust-containing air flow nozzle, making it more convenient to use.

[0004] Another technical problem to be solved by the present invention is to provide a dust generating and diffusion device, which uses the above-mentioned dust diffusion tube, can better mix the dust and the dilution gas more evenly, and is also convenient for disassembling and replacing the dust-containing airflow nozzle, making it more convenient to use.

[0005] In order to solve the first technical problem mentioned above, the technical solution of the present invention is: a dust diffusion tube, comprising a flared tube section, the small diameter end of the flared tube section is connected to a mixing tube section, the mixing tube section comprises a central tube connected to the small diameter end, a plurality of connecting holes are arranged on the tube wall of the central tube, an outer cover shell is welded and fixed to the outside of the central tube, the outer cover shell is welded and fixed to the central tube and wraps all the connecting holes to form an air intake chamber, a dilution air intake pipe connected to the air intake chamber is arranged on the outer cover shell, a tube end plate is detachably installed on the upstream end of the central tube, a dust-laden airflow nozzle is detachably fixedly installed on the tube end plate.

[0006] As a preferred solution, an upstream connecting flange is provided at the upstream end of the central pipe, and the pipe end plate is in sealing contact with the plate surface of the upstream connecting flange and is detachably fixed by a clamp.

[0007] As a preferred solution, there are multiple dilution intake pipes and they are evenly distributed relative to the central circumference of the central pipe.

[0008] As a preferred solution, the dilution air intake pipe is a curved pipe, and the dilution air intake pipe is connected to the upstream end plate of the outer cover shell.

[0009] As a preferred solution, a connecting screw hole is provided at the center of the tube end plate, and the dust-laden air flow nozzle is threadedly connected in the connecting screw hole.

[0010] As a preferred solution, the central tube is a straight tube section, and the diameter of the central tube is equal to the diameter of the small diameter end of the expanded tube section.

[0011] After adopting the above technical scheme, the effect of the present invention is as follows: since the small-diameter end of the expanded pipe section is connected to the mixing pipe section, the mixing pipe section includes a central pipe connected to the small-diameter end, a plurality of connecting holes are arranged on the pipe wall of the central pipe, an outer cover shell is welded and fixed to the outside of the central pipe, the outer cover shell is welded and fixed to the central pipe and wraps all the connecting holes to form an air intake chamber, a dilution air intake pipe connected to the air intake chamber is arranged on the outer cover shell, a pipe end plate is detachably installed on the upstream end of the central pipe, a dust-containing airflow nozzle is detachably fixedly installed on the pipe end plate, therefore, the dust diffusion pipe has at least the following advantages compared with the existing structure Points: 1. The design of the outer cover shell and the central tube is adopted, and the dilution gas enters the central tube through the air intake chamber and the connecting hole, so that the dilution gas is layered into several airflows, so as to be better mixed with the dust-containing airflow ejected from the dust-containing airflow nozzle, and the mixing effect is better; 2. The dust-containing airflow nozzle and the tube end plate are both detachable, so when the dust-containing airflow nozzle is blocked and needs to be replaced, the tube end plate can be directly removed, and then the dust-containing airflow nozzle can be disassembled, and the disassembly is more convenient. Compared with the current conventional installation method, the nozzle is directly fixed inside the air intake manifold, and the nozzle is difficult to disassemble. The solution of the present invention is more convenient to disassemble, install and maintain.

[0012] Since an upstream connecting flange is provided at the upstream end of the central tube, the tube end plate is in sealing contact with the plate surface of the upstream connecting flange and is detachably fixed by a clamp. Therefore, the sealing fixation between the upstream connecting flange and the tube short plate can be quickly achieved by the clamp, and disassembly and assembly are also convenient.

[0013] Furthermore, since there are multiple dilution intake pipes and they are evenly distributed relative to the central circumference of the central pipe, the gas can be uniformly introduced into the intake chamber through the multiple dilution intake pipes, so that the pressure of the gas entering the central pipe is more balanced and the mixing effect is better.

[0014] Furthermore, since the dilution air intake pipe is a curved pipe, the dilution air intake pipe is connected to the upstream end plate of the outer cover shell, so that the dilution air intake pipe is arranged as a curved pipe, which is convenient for pipe docking.

[0015] Furthermore, since a connecting screw hole is provided at the center of the tube end plate, the dust-laden air flow nozzle is threadedly connected in the connecting screw hole. Therefore, the dust-laden air flow nozzle can be disassembled more conveniently, and the tube end plate does not need to be disassembled during maintenance and replacement.

[0016] To solve the above-mentioned second technical problem, the technical solution of the present invention is: a dust generating and diffusion device, also including a dilution air supply fan and the dust diffusion pipe, the dust outlet pipe of the dust generator is connected to the dust-laden air flow nozzle, and the air outlet of the dilution air supply fan is connected to the dilution air inlet pipe through an air outlet pipe.

[0017] As a preferred solution, an air flow distributor is provided on the air outlet pipe, and a plurality of air outlets are provided on the air flow distributor, and each air outlet is connected to the dilution air inlet pipe in a one-to-one correspondence.

[0018] After adopting the above technical scheme, the effect of the present invention is: since a dust generating and diffusion device also includes a dilution air supply fan and the dust diffusion pipe, the dust outlet pipe of the dust generator is connected with the dust-containing air flow nozzle, and the air outlet of the dilution air supply fan is connected with the dilution air inlet pipe through the air outlet pipe. Therefore, dust-containing gas can be generated by the dust generator, and the dust-containing gas is sprayed into the central tube through the dust-containing air flow nozzle, and the dilution air supply fan supplies the dilution gas into the air inlet chamber and enters the central tube through the connecting hole. In this way, the dust and the dilution gas will be fully mixed in the central tube, and the mixed gas will be evenly diffused through the expanded pipe section, thereby meeting the uniform dust generation and diffusion requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 is a structural stereogram of an embodiment of the present invention;

[0021] Figure 2 is a schematic end view of an embodiment of the present invention;

[0022] Figure 3 yes Figure 2 Sectional view at AA;

[0023] Figure 4 yes Figure 3 An enlarged schematic diagram at A;

[0024] Figure 5 is a three-dimensional diagram of a dust generating and dispersing device according to an embodiment of the present invention;

[0025] Figure 6 is a three-dimensional diagram of the dust generating and dispersing device according to an embodiment of the present invention from another angle;

[0026] In the attached figure: 1. flared pipe section; 2. outer cover shell; 3. pipe end plate; 4. center pipe; 5. dilution air inlet pipe; 6. dust-laden air flow nozzle; 7. connecting hole; 8. air inlet chamber; 9. clamp; 10. dust generator; 11. dilution air supply fan; 12. air flow distributor; 13. air outlet duct. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below through specific examples.

[0028] like Figures 1 to 6 As shown, a dust diffusion tube comprises a flared tube section 1, a mixing tube section is connected to the small diameter end of the flared tube section 1, the mixing tube section comprises a central tube 4 connected to the small diameter end, a plurality of connecting holes 7 are arranged on the tube wall of the central tube 4, an outer cover shell 2 is welded and fixed to the outside of the central tube 4, the outer cover shell 2 is welded and fixed to the central tube 4 and wraps all the connecting holes 7 to form an air intake chamber 8, wherein the outer cover shell 2 consists of an outer tube, an upstream end plate and a downstream end plate, the upstream end plate and the downstream end plate have a central hole, the central hole is sleeved on the outer wall of the central tube 4 and welded and fixed.

[0029] The outer cover shell 2 is provided with a dilution air intake pipe 5 connected with the air intake chamber 8, and the upstream end of the central tube 4 is detachably mounted with a tube end plate 3, and the tube end plate 3 is detachably fixedly mounted with a dust-laden airflow nozzle 6. The number of the dilution air intake pipes 5 is multiple and is evenly distributed relative to the central circumference of the central tube 4. And preferably, the dilution air intake pipe 5 is arranged on the upstream end plate, so that the dilution air intake pipe 5 is axially inlet, which is consistent with the spraying direction of the dust-laden airflow nozzle 6.

[0030] The upstream end of the central pipe 4 is provided with an upstream connection flange, and the pipe end plate 3 is in sealing contact with the plate surface of the upstream connection flange and is detachably fixed by a clamp 9. A sealing ring is provided between the pipe end plate 3 and the upstream connection flange, and the clamp 9 squeezes the sealing ring after fixing the two, thereby achieving a sealed fit.

[0031] The dilution air intake pipe 5 is a curved pipe, which is connected to the upstream end plate of the outer cover shell 2 and extends outward, so that the dilution air intake pipe 5 is conveniently connected to the air outlet pipe 13 .

[0032] like Figure 4 As shown, a connection screw hole is provided at the center of the tube end plate 3, and the dust-laden airflow nozzle 6 is threadedly connected in the connection screw hole. The central tube 4 is a straight tube section, and the diameter of the central tube 4 is equal to the diameter of the small diameter end of the expanded tube section 1. The number of the connecting holes 7 is multiple and evenly distributed on the tube wall of the central tube 4.

[0033] like Figure 5 and Figure 6 As shown, the accompanying drawings illustrate a dust generating and dispersing device, which also includes a dilution air supply fan 11 and the dust diffusion pipe, the dust outlet pipe of the dust generator 10 is connected to the dust-containing air flow nozzle 6, and the air outlet of the dilution air supply fan 11 is connected to the dilution air inlet pipe 5 through the air outlet pipe 13. The air outlet pipe 13 is provided with an air flow distributor 12, and the air flow distributor 12 is provided with a plurality of air outlets, and each air outlet is connected to the dilution air inlet pipe 5 in a one-to-one correspondence.

[0034] Among them, the air flow distributor 12 includes a distribution cylinder, and a plurality of air outlets are arranged on the distribution cylinder. In this embodiment, the number of the dilution inlet pipes 5 is 6, and correspondingly, the number of the air outlets on the distribution cylinder is also six, and each air outlet is connected to a dilution inlet pipe 5 through an air outlet pipe 13.

[0035] In this embodiment, the dust generator 10 is an existing structure, and the specific structure is described in detail in the patent number CN201320205310.8 previously applied for by the applicant, which will not be described in detail here.

[0036] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A dust diffusion pipe, comprising a flared pipe section, characterized in that: The small diameter end of the expanded pipe section is connected to a mixing pipe section, and the mixing pipe section includes a central pipe connected to the small diameter end, and a plurality of connecting holes are arranged on the pipe wall of the central pipe. An outer cover shell is welded and fixed to the outside of the central pipe, and the outer cover shell is welded and fixed to the central pipe and wraps all the connecting holes to form an air intake chamber. A dilution air intake pipe connected to the air intake chamber is arranged on the outer cover shell, and a pipe end plate is detachably mounted on the upstream end of the central pipe, and a dust-laden airflow nozzle is detachably fixedly mounted on the pipe end plate.

2. A dust diffusion tube according to claim 1, characterized in that: An upstream connecting flange is arranged at the upstream end of the central pipe, and the pipe end plate is in sealing contact with the plate surface of the upstream connecting flange and is detachably fixed by a clamp.

3. A dust diffusion tube as claimed in claim 2, characterized in that: The number of the dilution intake pipes is multiple and they are evenly distributed relative to the central circumference of the central pipe.

4. A dust diffusion tube as claimed in claim 3, characterized in that: The dilution air intake pipe is a curved pipe, and the dilution air intake pipe is connected to the upstream end plate of the outer cover shell.

5. A dust diffusion tube as claimed in claim 4, characterized in that: A connecting screw hole is arranged at the center of the tube end plate, and the dust-laden air flow nozzle is threadedly connected in the connecting screw hole.

6. The dust diffusion tube according to claim 1, characterized in that: The central tube is a straight tube section, and the diameter of the central tube is equal to the diameter of the small diameter end of the expanded tube section.

7. A dust generating and dispersing device, comprising a dust generator, characterized in that: It also includes a dilution air supply fan and a dust diffusion pipe as described in any one of claims 1 to 6, the dust outlet pipe of the dust generator is connected to the dust-laden air flow nozzle, and the air outlet of the dilution air supply fan is connected to the dilution air inlet pipe through an air outlet pipe.

8. A dust generating and dispersing device as claimed in claim 1, characterized in that: The air outlet pipeline is provided with an air flow distributor, and the air flow distributor is provided with a plurality of air outlets, and each air outlet is connected with the dilution air inlet pipe in a one-to-one correspondence.

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