Closing connecting pipe for dust environment simulation

Abstract

The utility model discloses a close-up connecting pipe for dust environment simulation, which comprises an upstream pipe end frame and a downstream pipe end frame, the upstream pipe end frame and the downstream pipe end frame are both rectangular, a close-up pipe body is connected between the upstream pipe end frame and the downstream pipe end frame, the outside of the close-up pipe body is wrapped with a thermal insulation material, and the thermal insulation material is connected with the upstream pipe end frame and the downstream pipe end frame. A fixing structure for fixing the thermal insulation material is connected between the upstream pipe end frame and the downstream pipe end frame, and the closing-up connecting pipe can meet the requirement for connection of a large-size rectangular space and a horizontal wind tunnel and meet the requirement for large-flow dust environment simulation.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dust environment simulation technical field especially relates to a dust environment simulation is with closing mouth connecting pipe. BACKGROUND

[0002] In the dust environment simulation field, at present, the calibration of dust concentration detection instrument is mostly completed through dust environment simulation equipment, and the generation and distribution of simulated dust need to use a horizontal wind tunnel, at present, the upstream end of the horizontal wind tunnel is connected with a dust generating device to generate dust, and the downstream end is connected with an air exhaust fan to exhaust air, and dust-containing air flow is mixed and uniformly flowed through the horizontal wind tunnel to form a dust environment.

[0003] For example, the utility model file with the announcement number CN216524682U discloses a dust environment simulation device with a horizontal wind tunnel, which directly mixes dust-containing gas sent by a mixing cylinder air inlet and a conical compression diffusion structure, but the air inlet amount of this way is small, which is difficult to adapt to large flow dust environment simulation. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem that: provide a dust environment simulation is with closing mouth connecting pipe, this closing mouth connecting pipe can be adapted to the connection requirement of rectangular space and horizontal wind tunnel of big size, satisfy the dust environment simulation of big flow, solve the problem that the air inlet amount is small before.

[0005] To solve the above technical problem, the technical scheme of the utility model is: a dust environment simulation is with closing mouth connecting pipe, including upstream pipe end frame and downstream pipe end frame, upstream pipe end frame and downstream pipe end frame are all rectangular, upstream pipe end frame and downstream pipe end frame are connected with closing mouth pipe body between, the outside of closing mouth pipe body is wrapped with heat preservation material, the connection between upstream pipe end frame and downstream pipe end frame has the fixed structure that fixes heat preservation material.

[0006] As a preferred scheme, the fixed structure includes four fixed rods connected with the four corners of the upstream pipe end frame and the downstream pipe end frame, the fixed rod includes two limiting plate surfaces, the two limiting plate surfaces constitute an L-shaped cross section, the limiting plate surfaces on the adjacent fixed rods on the same side of the rectangle are clamped with a sealing plate, and the sealing plate and the closing mouth pipe body are filled with heat preservation material.

[0007] As a preferred scheme, the upstream end of the closing mouth pipe body is provided with an upstream outward flange, the downstream end of the closing mouth pipe body is provided with a downstream outward flange, the fixed rods are respectively welded and fixed between the upstream outward flange and the downstream outward flange, and the upstream outward flange and the downstream outward flange constitute the upstream pipe end frame and the downstream pipe end frame.

[0008] As a preferred scheme, the upstream end of the closing pipe body is provided with an upstream outer flange, the downstream end of the closing pipe body is provided with a downstream outer flange, the downstream outer flange constitutes a downstream pipe end frame, the downstream end of the fixing rod is welded on the downstream outer flange, the upstream pipe end frame is detachably fixed on the upstream end face of the upstream outer flange, the upstream pipe end frame is provided with a fixing flange extending downstream, and the fixing flange and the upstream end of the fixing rod are detachably fixed through bolts.

[0009] As a preferred scheme, the closing pipe body comprises four closing pipe body pieces, the upstream end and the downstream end of each closing pipe body piece are respectively provided with an upstream outer flange single body and a downstream outer flange single body, and the four closing pipe body pieces are combined and welded to form the closing pipe body.

[0010] After the above technical scheme is adopted, the effect of the utility model is that: since the closing connection pipe for dust environment simulation comprises an upstream pipe end frame and a downstream pipe end frame, the upstream pipe end frame and the downstream pipe end frame are both rectangular, a closing pipe body is connected between the upstream pipe end frame and the downstream pipe end frame, the closing pipe body is wrapped with heat preservation material, and a fixing structure for fixing the heat preservation material is connected between the upstream pipe end frame and the downstream pipe end frame, therefore, the upstream pipe end frame can butt joint a larger rectangular space, and the downstream pipe end frame is small in size and can be butt jointed with a horizontal wind tunnel, so that the requirement of larger air intake is met, meanwhile, the heat preservation material is fixed outside through the fixing structure, so that the closing connection pipe can be heat preserved, and the simulation of dust environment with temperature requirement is suitable.

[0011] In addition, the fixing structure comprises four fixing rods connecting the four corners of the upstream pipe end frame and the downstream pipe end frame, the fixing rod comprises two limiting plate faces, the two limiting plate faces constitute an L-shaped cross section, a sealing plate is clamped between the limiting plate faces of adjacent fixing rods on the same side of the rectangle, heat preservation material is filled between the sealing plate and the closing pipe body, so that the heat preservation material is directly fixed by the sealing plate and is more beautiful from the outside, meanwhile, the sealing plate is limited between the two limiting plate faces, so that the sealing plate is fixed firmly and cannot be separated.

[0012] And since the upstream end of the closing pipe body is provided with an upstream outer flange, the downstream end of the closing pipe body is provided with a downstream outer flange, the downstream outer flange constitutes a downstream pipe end frame, the downstream end of the fixed rod is welded on the downstream outer flange, the upstream pipe end frame can be detachably fixed on the upstream end face of the upstream outer flange, the upstream pipe end frame is provided with a fixed flange extending downstream, and the fixed flange and the upstream end of the fixed rod are detachably fixed through bolts, therefore, the above structure can facilitate the disassembly and assembly of the sealing plate, in use, the downstream end of the fixed rod is welded and fixed with the downstream pipe end frame, then the heat preservation material is wrapped around the closing pipe body, then the sealing plate is inserted from the upstream end, at this time, since the size of the downstream end is small and the size of the upstream end is large, the insertion of the sealing plate is not hindered, when the insertion of the sealing plate is completed, the edges of the sealing plate are limited by the limiting plate face, finally, the upstream pipe end frame and the upstream outer flange are fixed through bolts, at this time, the fixed flange is aligned and matched with the corresponding limiting plate face, finally, the fixed flange and the upstream end of the fixed rod are fixed through bolts, the overall fixing is convenient, and the subsequent replacement of the heat preservation material is also convenient.

[0013] And since the closing pipe body comprises four closing pipe body pieces, the upstream end and the downstream end of each closing pipe body piece are respectively provided with an upstream outer flange monomer and a downstream outer flange monomer, and the four closing pipe body pieces are combined and welded to form the closing pipe body, therefore, the closing pipe body is simpler to manufacture, more convenient to form, and lower in forming difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further explained in connection with the drawings and embodiments.

[0015] Figure 1 It is the perspective view of the utility model embodiment omitting the sealing plate;

[0016] Figure 2 It is the front view of the utility model embodiment;

[0017] Figure 3 It is Figure 2 The sectional view along A-A;

[0018] Figure 4 It is Figure 3 The structure enlarged view of A in the middle;

[0019] Figure 5 It is the structure schematic view of the closing pipe body piece of the utility model embodiment;

[0020] In the drawings: 1. upstream pipe end frame; 11. fixed flange; 2. downstream pipe end frame; 3. closing pipe body; 31. closing pipe body piece; 4. fixed rod; 41. limiting plate face; 5. sealing plate; 6. upstream outer flange; 7. downstream outer flange. DETAILED DESCRIPTION

[0021] The utility model will be further described in detail through specific embodiments.

[0022] As Figures 1-5 As shown in a dust environment simulation is closed with connecting pipe, including upstream pipe end frame 1 and downstream pipe end frame 2, upstream pipe end frame 1 and downstream pipe end frame 2 are rectangular, upstream pipe end frame 1 and downstream pipe end frame 2 are connected with the closing pipe body 3, the outside of closing pipe body 3 is wrapped with heat preservation material, the fixed structure that has fixed heat preservation material between upstream pipe end frame 1 and downstream pipe end frame 2 is connected.

[0023] Fixed structure includes four fixed rods 4 connected to the four corners of upstream pipe end frame 1 and downstream pipe end frame 2, the fixed rod 4 includes two limit plate surfaces 41, two limit plate surfaces 41 constitute the cross section of L-shaped, the limit plate surface 41 between adjacent fixed rod 4 on the same side of rectangle is clamped with sealing plate 5, the sealing plate 5 and closing pipe body 3 are filled with heat preservation material.

[0024] In the embodiment, the upstream end of the closing pipe body 3 is provided with an upstream outward flange 6, the downstream end of the closing pipe body 3 is provided with a downstream outward flange 7, the downstream outward flange 7 constitutes the downstream pipe end frame 2, the downstream end of the fixed rod 4 is welded on the downstream outward flange 7, the upstream pipe end frame 1 can be detachably fixed on the upstream end face of the upstream outward flange 6, the upstream pipe end frame 1 is provided with a fixed flange 11 extending downstream, and the fixed flange 11 and the upstream end of the fixed rod 4 are detachably fixed by bolts. The closing pipe body 3 includes four closing pipe body pieces 31, each closing pipe body piece 31 is provided with an upstream outward flange monomer and a downstream outward flange monomer at the upstream end and the downstream end respectively, and the four closing pipe body pieces 31 are combined with each other and welded to form the closing pipe body 3.

[0025] The upstream pipe end frame 1 of the present application can butt joint a larger rectangular space, the downstream pipe end frame 2 is small in size and can be butt jointed with a horizontal wind tunnel, so that the requirement of larger air intake is met, at the same time, the heat preservation material is fixed outside by the fixed structure such as the fixed rod 4, the heat preservation material is directly fixed by the sealing plate 5, which is more beautiful from the outside, at the same time, the sealing plate 5 is limited between the two limit panels, so that it is fixed firmly and will not be separated, the whole closing connecting pipe can be heat preserved, and it is suitable for the simulation of dust environment with temperature requirement.

[0026] When the sealing plate 5 needs to be disassembled and assembled, the downstream end of the fixing rod 4 is welded and fixed with the downstream pipe end frame 2, then the heat preservation material is wrapped in the closing pipe body 3, the sealing plate 5 is inserted from the upstream end, because the size of the downstream end is small and the size of the upstream end is large, therefore, the insertion of the sealing plate 5 is not hindered, when the insertion of the sealing plate 5 is completed, the edge of the sealing plate 5 is limited by the limiting plate surface 41, finally, the upstream pipe end frame 1 and the upstream outer turning edge 6 are fixed by bolts, at this time, the fixed folding edge 11 is also aligned and matched with the corresponding limiting plate surface 41, finally, the fixed folding edge 11 and the upstream end of the fixing rod 4 are fixed by bolts, the overall fixing is convenient.

[0027] Of course, the closing pipe body 3 can also be designed as other structures. The upstream end of the closing pipe body 3 can also be provided with the upstream outer turning edge 6, the downstream end of the closing pipe body 3 can also be provided with the downstream outer turning edge 7, the fixing rod 4 is welded and fixed between the upstream outer turning edge 6 and the downstream outer turning edge 7 respectively, and the upstream outer turning edge 6 and the downstream outer turning edge 7 directly constitute the upstream pipe end frame 1 and the downstream pipe end frame 2.

[0028] The gas circuit system, the executing device such as the servo motor, the gear transmission mechanism and the screw nut mechanism mentioned in the embodiment are all the conventional technologies at present, the specific structure and principle of the cylinder, the motor and other transmission mechanisms and other designs are disclosed in detail in the "Mechanical Design Manual Fifth Edition" printed in Beijing in April 2008 for the twenty-eighth time, which belongs to the prior art, the structure is clear and explicit, the vacuum element, the gas circuit and the program control are disclosed in detail in the modern practical pneumatic technology third edition SMC training teaching material published by the mechanical industry press on August 1, 2008, which shows that the gas circuit structure in the embodiment is also the prior art, which is clear and explicit, the control of the motor and the travel switch are also introduced in detail in the "Motor Drive and Speed Regulation" book published by the chemical industry press on July 1, 2015, therefore, the circuit and the gas circuit connection are clear.

[0029] The above-mentioned embodiments are only the description of the preferred embodiments of the utility model, not as the limitation of the scope of the utility model, on the basis of not departing from the design spirit of the utility model, various deformations and modifications of the technical scheme of the utility model are made, which should fall into the protection scope determined by the claims of the utility model.

Claims

1. A dust environment simulation use of the closing pipe, its characterized in that: The application relates to a pipe end frame, which comprises an upstream pipe end frame and a downstream pipe end frame, both of which are rectangular, a pipe body with a narrowed end is connected between the upstream pipe end frame and the downstream pipe end frame, the pipe body with a narrowed end is wrapped with heat insulation material, and a fixing structure for fixing the heat insulation material is connected between the upstream pipe end frame and the downstream pipe end frame.

2. The dust environment simulation use of a closeout connecting pipe according to claim 1, characterized in that: The fixing structure comprises four fixing rods connected to the four corners of the upstream pipe end frame and the downstream pipe end frame, the fixing rods comprise two limiting plate surfaces, the two limiting plate surfaces form an L-shaped cross section, a sealing plate is clamped between the limiting plate surfaces on the adjacent fixing rods and on the same side of the rectangle, and the sealing plate and the pipe body with a narrowed end are filled with heat insulation material.

3. A dust environment simulation use of the mouth connecting pipe of claim 2, characterized in that: An upstream outer turning edge is arranged at the upstream end of the pipe body with a narrowed end, a downstream outer turning edge is arranged at the downstream end of the pipe body with a narrowed end, the fixing rods are respectively welded and fixed between the upstream outer turning edge and the downstream outer turning edge, and the upstream outer turning edge and the downstream outer turning edge form the upstream pipe end frame and the downstream pipe end frame.

4. The dust environment simulation use of a closeout connecting pipe according to claim 2, characterized in that: An upstream outer turning edge is arranged at the upstream end of the pipe body with a narrowed end, a downstream outer turning edge is arranged at the downstream end of the pipe body with a narrowed end, the downstream outer turning edge forms the downstream pipe end frame, the downstream ends of the fixing rods are welded on the downstream outer turning edge, the upstream pipe end frame is detachably fixed on the upstream end surface of the upstream outer turning edge, a fixing folded edge extending towards the downstream is arranged on the upstream pipe end frame, and the fixing folded edge and the upstream ends of the fixing rods are detachably fixed through bolts.

5. A dust environment simulation closed-coupled tube according to claim 3 or 4, wherein: The pipe body with a narrowed end comprises four pipe body pieces, an upstream outer turning edge monomer and a downstream outer turning edge monomer are respectively arranged at the upstream end and the downstream end of each pipe body piece, the four pipe body pieces are combined and welded to form the pipe body with a narrowed end.

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