Novel vacuumizing pipe structure

Abstract

The utility model provides a novel vacuumizing pipe structure, and particularly relates to the technical field of vacuum equipment.The novel vacuumizing pipe structure comprises a vent pipe, the vent pipe comprises inner-layer silk cloth and an outer-layer silk screen, the silk cloth and the silk screen are wound inside and outside to form the vent pipe, and angle steel is further arranged inside the vent pipe. The two pieces of angle steel are symmetrically arranged in the ventilation pipe, the two ends of the two pieces of angle steel abut against the four corners of the ventilation pipe correspondingly, the cross section of the ventilation pipe is square, the whole ventilation pipe is square through supporting of the two pieces of angle steel, and the large airflow circulation area can be achieved; and due to the large air flow circulation area, the efficiency is higher during evacuation.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum equipment, in particular to a novel vacuum tube structure. Background Art

[0002] The vacuum tube of the vacuum powder insulated low-temperature pressure vessel uses the negative pressure generated by the vacuum pump system to evacuate the insulation interlayer to the required vacuum degree. The vacuum tube is required to be able to filter the powder insulation material to prevent the powder insulation material from being sucked into the vacuum pump system, reduce the resistance of vacuuming, shorten the vacuuming time and improve production efficiency.

[0003] In the prior art, most vacuum structures have a small airflow area and low vacuum efficiency. In view of this, the present invention provides a new vacuum tube structure that can improve the vacuum efficiency. Utility Model Content

[0004] In order to solve the problem of low efficiency of existing vacuum tubes, the utility model proposes a novel vacuum tube structure.

[0005] The utility model is achieved through the following technical solutions:

[0006] The utility model proposes a new vacuum tube structure including an air-permeable tube, wherein the air-permeable tube includes an inner layer of silk cloth and an outer layer of silk mesh, wherein the silk cloth and the silk mesh are wound inside and outside to form the air-permeable tube, and an angle steel is further provided inside the air-permeable tube, wherein two of the angle steels are symmetrically arranged inside the air-permeable tube, and the two ends of the two angle steels respectively press against the four corners of the air-permeable tube and make the cross-section of the air-permeable tube square.

[0007] Furthermore, it also includes seamless pipes, multiple seamless pipes and multiple breathable pipes are staggered and fixedly connected, and the seamless pipes at the front end and the rear end of the vacuum pipe structure are respectively connected to the external vacuum system and the sealing plate.

[0008] Furthermore, grooves are provided at both ends of the seamless pipe, and the angle steel, wire cloth and wire mesh at one end of the air-permeable pipe are inserted into the grooves and are sealed and fixedly connected to the seamless pipe.

[0009] Furthermore, it also includes a first fixing frame, one end of which is clamped on the outside of the air tube and fixedly connected to the air tube.

[0010] Furthermore, it also includes a support ring, one end of which is connected to the other end of the first fixing frame, and the other end of which is connected to the sandwich shell.

[0011] Furthermore, it also includes a second fixing frame, which includes a ring plate, a support plate and a pipe sleeve, the ring plate is arranged on the outside of the seamless pipe and fixedly connected to the seamless pipe, the pipe sleeve is arranged on the outside of the seamless pipe, the top of the pipe sleeve is fixedly connected to the ring plate, one end of the support plate is fixedly connected to the sandwich shell, and the other end is fixedly connected to the pipe sleeve.

[0012] Furthermore, the silk cloth is glass silk cloth.

[0013] Furthermore, the wire mesh is a phosphor bronze wire mesh.

[0014] Furthermore, the angle steel and the seamless tube are made of micro carbon steel or stainless steel.

[0015] Beneficial effects of the utility model:

[0016] (1) The novel vacuum tube structure proposed in the present invention is supported by two angle steels so that the entire air vent tube is square and has a larger air flow area. The larger air flow area can make the vacuuming more efficient and less prone to blockage.

[0017] (2) The novel vacuum tube structure proposed in the present invention can effectively filter and isolate pearl sand particles by using glass fiber cloth and phosphor bronze wire mesh, thereby preventing the pearl sand from mixing with the air flow and entering the vacuum pipe or vacuum system to cause blockage and affect the vacuum efficiency, and at the same time, the filtered air flow has a higher purity.

[0018] (3) The novel vacuum tube structure proposed in the present invention can be inserted into the interlayer to draw the internal airflow, thereby assisting in filling the pearlescent sand, so that the pearlescent sand filling in each area of the interlayer is more compact and substantial.

[0019] (4) The new vacuum tube structure proposed in the present invention adopts the connection method of angle steel and seamless tube plus the support structure of the first fixing frame and the second fixing frame, so that the entire vacuum tube structure has the characteristics of extending into the space of more than 2 / 3 of the total length of the interlayer shell without leakage points and rigid instability, so as to avoid the internal vacuum blind area. At the same time, the first fixing frame and the second fixing frame provide rigid fixation and flexible fixation respectively, which can effectively avoid the problem of stress concentration. When vacuuming, the wire mesh cloth is not easy to tear. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the overall structural diagram of the novel vacuum tube structure of the utility model;

[0021] Figure 2 This is a cross-sectional view of the ventilation tube of the novel vacuum tube structure of the present utility model;

[0022] Figure 3This is a structural diagram of the first fixing frame of the novel vacuum tube structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the connection between the vent pipe and the seamless pipe of the new vacuum pipe structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the sealing plate connection of the novel vacuum tube structure of the present utility model;

[0025] Figure 6 This is a structural diagram of the second fixing frame of the novel vacuum tube structure of the present utility model;

[0026] In the figure: ventilation tube 1, angle steel 11, wire mesh 12, wire cloth 13, seamless tube 2, sealing plate 3, first fixing frame 4, support ring 5, second fixing frame 6, ring plate 61, pipe sleeve 62, support plate 7;

[0027] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0028] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0029] Please refer to Figures 1-6 The utility model proposes a new vacuum tube structure including a ventilation tube 1, which includes an inner layer of wire cloth 13 and an outer layer of wire mesh 12. The wire cloth 13 and the wire mesh 12 are wound inside and outside to form the ventilation tube 1. An angle steel 11 is also provided inside the ventilation tube 1. Two angle steels 11 are symmetrically arranged in the ventilation tube 1. The two ends of the two angle steels 11 respectively press against the four corners of the ventilation tube 1 and make the cross section of the ventilation tube 1 square.

[0030] In a specific embodiment, the angle steel 11 is L-shaped, and the bent parts of the two angle steels 11 are intermittently welded and fixed in a cross shape. The wire cloth 13 and the wire mesh 12 are wrapped back and forth. The wire cloth 13 wraps the inner layer. The overlapping part during winding needs to meet the filtering requirements, and the outer side of the wire cloth 13 is tied with copper wire. The angle steel 11 is supported to make the entire air vent 1 square, with a larger air flow area. The larger air flow area can leave no blind spots when evacuating.

[0031] Furthermore, it also includes seamless pipes 2, multiple seamless pipes 2 and multiple breathable pipes 1 are staggered and fixedly connected, and the seamless pipes 2 at the front end and the rear end of the vacuum tube structure are respectively connected to the external vacuum system and the sealing plate 3.

[0032] In a specific embodiment, the air tube 1 and the seamless tube 2 are staggered and connected to form a pipeline structure. The middle seamless tube 2 connects the two air tubes 1, and then the other end of one air tube 1 is connected to the tail seamless tube 2. The end of the seamless tube 2 is sealed with a sealing plate 3. The other end of the other air tube 1 is connected to the seamless tube 2 and the external vacuum joint in turn. The external vacuum system is evacuated, and the gas is extracted through the air tube 1 and the seamless tube 2 in turn, while cinnabar or other dust is blocked by the air tube 1 to the outside of the entire vacuum tube structure.

[0033] In one embodiment, the vacuum tube structure proposed in the present invention can also assist in filling the pearlescent sand by being inserted into the interlayer to draw the internal airflow, so that the pearlescent sand filling in each area of the interlayer is more compact and substantial.

[0034] Furthermore, grooves are provided at both ends of the seamless pipe 2 , and the angle steel 11 , wire cloth 13 and wire mesh 12 at one end of the air-permeable pipe 1 are inserted into the grooves and are sealed and fixedly connected to the seamless pipe 2 .

[0035] In a specific embodiment, the groove of the seamless pipe 2 can just be used for inserting the air vent pipe 1. After the four sides of the angle steel 11 are chamfered, they are inserted into the groove and welded firmly. At the same time, the wire mesh 12 and the phosphor copper wire are bundled into the groove of the seamless pipe 2 using copper wire to achieve seamless connection.

[0036] Furthermore, it also includes a first fixing frame 4 , one end of which is clamped on the outside of the air tube 1 and fixedly connected to the air tube 1 .

[0037] In a specific embodiment, the first fixing frame 4 clamps the outer side of the air vent tube 1 . The first fixing frame 4 is used to fix the square air vent tube 1 to prevent the air vent tube 1 from being deformed in a horizontal state.

[0038] Furthermore, it also includes a support ring 5, one end of the support ring 5 is connected to the other end of the first fixing frame 4, and the other end is connected to the sandwich shell.

[0039] In a specific embodiment, the support ring 5 can connect the first fixing frame 4 and the sandwich shell. The support ring 5 can be selected according to actual conditions. When the support ring 5 is not provided, the first fixing frame 4 can be directly welded to the inner wall of the shell.

[0040] Furthermore, it also includes a second fixing frame 6, which includes a ring plate 61, a support plate 7 and a pipe sleeve 62. The ring plate 61 is arranged on the outside of the seamless pipe 2 and is fixedly connected to the seamless pipe 2. The pipe sleeve 62 is arranged on the outside of the seamless pipe 2. The top of the pipe sleeve 62 is fixedly connected to the ring plate 61. One end of the support plate 7 is fixedly connected to the sandwich shell, and the other end is fixedly connected to the pipe sleeve 62.

[0041] In a specific embodiment, a single surface of the ring plate 61 is welded to the outer side of the seamless tube 2, and then the ring plate 61 is welded using the pipe sleeve 62 and fixed to the sandwich shell through the support plate 7. The pipe sleeve 62 does not contact the seamless tube 2, so that it has a certain amount of free expansion and contraction in the axial direction, which can relieve the problem of stress concentration caused by transportation and gravity loads. The second fixing frame 6 fixes the seamless tube 2 and supports the weight of the main body component when in a vertical state.

[0042] In one embodiment, the connection method of the angle steel 11 and the seamless tube 2 is combined with the support structure of the first fixing frame 4 and the second fixing frame 6, so that the entire vacuum tube structure has the characteristics of extending into the space of more than 2 / 3 of the total length of the interlayer shell without leakage points and rigid instability, so as to avoid the internal vacuum blind area. At the same time, the first fixing frame 4 and the second fixing frame 6 respectively provide rigid fixation and flexible fixation, which can effectively avoid the problem of stress concentration. When vacuuming, the wire mesh cloth is not easy to tear.

[0043] Furthermore, the wire cloth 13 is a glass wire cloth 13; the wire mesh 12 is a phosphor bronze wire mesh 12; and the angle steel 11 and the seamless tube 2 are made of micro carbon steel or stainless steel.

[0044] In a specific embodiment, the wire cloth 13 and the wire mesh 12 can also be selected from other materials according to actual conditions. The selection of the glass cloth 13 and the phosphor bronze wire mesh 12 needs to meet the requirements of the mesh size of particles such as pearl sand, and the number of layers of the glass cloth 13 and the phosphor bronze wire mesh 12 wrapped back and forth must also meet the requirements of airflow filtration.

[0045] In one embodiment, the metal parts in the entire structure need to be derusted and degreased before assembly, and the glass fiber cloth 13 needs to be degreased.

[0046] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A new type of vacuum tube structure, characterized in that: It includes a ventilation tube, which includes an inner layer of silk cloth and an outer layer of silk mesh. The silk cloth and the silk mesh are twisted inside and outside to form the ventilation tube. Angle steel is also provided inside the ventilation tube. Two of the angle steels are symmetrically arranged in the ventilation tube. The two ends of the two angle steels respectively press against the four corners of the ventilation tube and make the cross section of the ventilation tube square.

2. The novel vacuum tube structure according to claim 1 is characterized in that: It also includes seamless pipes, multiple seamless pipes and multiple breathable pipes are staggered and fixedly connected, and the seamless pipes at the front end and the rear end of the vacuum pipe structure are respectively connected to the external vacuum system and the sealing plate.

3. The novel vacuum tube structure according to claim 2, characterized in that: Grooves are provided at both ends of the seamless pipe, and the angle steel, wire cloth and wire mesh at one end of the air-permeable pipe are inserted into the grooves and are sealed and fixedly connected with the seamless pipe.

4. The novel vacuum tube structure according to claim 1, characterized in that: It also includes a first fixing frame, one end of which is clamped on the outside of the air tube and fixedly connected to the air tube.

5. The novel vacuum tube structure according to claim 4 is characterized in that: It also includes a support ring, one end of which is connected to the other end of the first fixing frame, and the other end of which is connected to the sandwich shell.

6. The novel vacuum tube structure according to claim 3, characterized in that: It also includes a second fixing frame, which includes a ring plate, a support plate and a pipe sleeve. The ring plate is arranged on the outside of the seamless pipe and fixedly connected to the seamless pipe. The pipe sleeve is arranged on the outside of the seamless pipe. The top of the pipe sleeve is fixedly connected to the ring plate. One end of the support plate is fixedly connected to the sandwich shell, and the other end is fixedly connected to the pipe sleeve.

7. The novel vacuum tube structure according to claim 1, characterized in that: The silk cloth is glass silk cloth.

8. The novel vacuum tube structure according to claim 1 is characterized in that: The wire mesh is a phosphor bronze wire mesh.

9. The novel vacuum tube structure according to claim 2, characterized in that: The angle steel and the seamless tube are made of micro carbon steel or stainless steel.

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