Specific surface area measuring tube

Abstract

The utility model discloses a specific surface area measuring tube, which relates to the technical field of measuring tubes and comprises a tube orifice, one end of the tube orifice is detachably connected with an adapter tube, and a detection tube is connected in the adapter tube; a wear-resistant coating is arranged on the outer surface of the pipe orifice; multiple layers of steps are arranged on the inner wall of the adapter tube, and one end of the detection tube is connected with one vertical surface adjacent to the tread of the multiple layers of steps; the connected end of the detection pipe abuts against the tread of one step. When the pipe orifice is mounted on a detection instrument, the wear resistance of the pipe orifice is improved, so that the outer surface of the pipe orifice is prevented from being worn, and the phenomena of air leakage and the like caused by damage of the outer surface of the pipe orifice are prevented; and the inner wall of the adapter pipe is provided with a plurality of layers of steps, so that a plurality of vertical surfaces with different inner diameters are formed, and the detection pipes with different sizes can be mounted on different vertical surfaces through different connecting positions, so that the adapter pipe is suitable for the detection pipes with various pipe diameters, and the use requirements of a user are favorably expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring tubes, in particular to a specific surface area measuring tube. Background Art

[0002] Specific surface area measuring tubes play a key role in specific surface area measurement, especially when using certain specific surface area test methods.

[0003] At present, the main material of the specific surface area measuring tube on the market is quartz. Since quartz is not resistant to acid and alkali, and is fragile and easy to scratch, the specific surface area measuring tube is prone to scratches and breakage during actual experimental use, resulting in the measurement tube mouth and the specific surface area tester port not being tightly connected, causing leakage, poor experimental accuracy, and a high frequency of replacement due to damaged sample tubes. Utility Model Content

[0004] The purpose of the utility model is to provide a specific surface area measuring tube to solve the following technical problems:

[0005] How to improve the wear resistance of measuring tubes.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A specific surface area measuring tube comprises a tube mouth, one end of the tube mouth is detachably connected to a transfer tube, a detection tube is connected inside the transfer tube; and the outer surface of the tube mouth is provided with a wear-resistant coating.

[0008] As a further solution of the utility model: the wear-resistant coating is a zirconium oxide coating.

[0009] As a further solution of the utility model: the pipe mouth is spherical, and a channel with two ends opened is opened at the center of the sphere, and the central axis of the channel is arranged colinearly with the axis of the sphere; the adapter tube is detachably connected to the inside of one end of the channel.

[0010] As a further solution of the utility model: an outer wall of the transfer tube is provided with an outer step, and an outer circular portion connected to the tread of the outer step is detachably inserted into the channel of the pipe opening.

[0011] As a further solution of the utility model: the outer cylindrical tube wall of the adapter tube inserted in the channel is provided with an external thread, and the inner wall of the channel is provided with an internal thread matching the external thread.

[0012] As a further solution of the utility model: a sealing gasket is installed on the step tread on the outer wall of the transfer tube to form a seal at the connection.

[0013] As a further solution of the utility model: a plurality of steps are arranged on the inner wall of the transfer tube, and one end of the detection tube is connected to one of the vertical surfaces adjacent to the treads of the plurality of steps.

[0014] As a further solution of the utility model: the connected end of the detection tube is arranged against the tread of one of the steps.

[0015] As a further solution of the utility model: one end of the detection tube is threadedly connected to one of the vertical surfaces adjacent to the multi-layer step treads.

[0016] Beneficial effects of the utility model:

[0017] The outer portion of the tube mouth in the specific surface area measuring tube of the utility model is provided with a wear-resistant coating. When the tube mouth is installed on the detection instrument, the wear resistance of the tube mouth is improved, which is beneficial to avoid the outer surface of the tube mouth from being worn, and prevents leakage and the like caused by damage to the outer surface of the tube mouth, thereby greatly improving the accuracy of the experimental detection results and the service life of the measuring tube; and multiple layers of steps are provided on the inner wall of the adapter tube, forming multiple vertical surfaces with different inner diameters. Therefore, detection tubes of different sizes can be installed on different vertical surfaces through different connection positions, so that the adapter tube is suitable for detection tubes of various diameters, which is beneficial to users to expand their usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of a specific surface area measuring tube according to an embodiment of the utility model.

[0020] Figure 2 yes Figure 1 Exploded diagram of

[0021] Figure 3 yes Figure 1 A cross-sectional view of

[0022] Figure 4 In the specific surface area measuring tube of an embodiment of the utility model, the detection tube and the transfer tube are different in that Figure 1 A schematic diagram of the structure of the connection position in FIG.

[0023] Figure 5 In the specific surface area measuring tube of an embodiment of the utility model, the detection tube and the transfer tube are different in that Figure 1 , 4 A schematic diagram of the structure of the connection position in FIG.

[0024] In the figure: 100, pipe mouth; 101, internal thread; 200, adapter tube; 201, external thread; 300, sealing ring; 400, detection tube. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-2 As shown, the utility model is a specific surface area measuring tube, which is mainly composed of a nozzle 100, a transfer tube 200 and a detection tube 400. The nozzle 100 is spherical in shape, with a hole with two ends opened at the center of the sphere, and a wear-resistant coating is provided on the outer surface of the sphere. The material of the wear-resistant coating is not limited, and it only needs to meet the requirement of high wear resistance. In the embodiment of the utility model, the wear-resistant coating is a zirconium oxide coating; when the nozzle 100 is installed on the detection instrument, the wear resistance of the nozzle 100 is improved, which is conducive to avoiding the outer surface of the nozzle 100 from being worn, and preventing leakage caused by damage to the outer surface of the nozzle 100.

[0027] An external step is provided on the outer wall of the adapter tube 200. The outer wall surface of the adapter tube 200 includes the riser and tread of the external step, and an outer cylindrical tube surface vertically connected to the tread. The adapter tube 200 is inserted into the channel of 100 through the outer cylindrical tube surface. It should be noted that the tread of the external step is arc-shaped, which abuts against the outside of the channel of the pipe mouth 100 and fits the shape of the pipe mouth 100 to limit the adapter tube 200.

[0028] Furthermore, in order to form a better seal between the adapter tube 200 and the pipe mouth 100, a sealing ring 300 with a matching shape and size is installed on the tread of the external step. The sealing ring 300 is located between the pipe mouth 100 and the tread of the external step, thereby improving the sealing effect.

[0029] The adapter tube 200 is inserted into the channel of 100 and has an external thread 201 on its surface wall. The inner wall of the channel of the pipe mouth 100 is provided with an internal thread 101 matching the external thread 201. The adapter tube 200 can be rotatably inserted into the pipe mouth 100 and can also be rotatably pulled out of the pipe mouth 100, making the disassembly between the two very convenient and facilitating quick replacement when one of the components is damaged.

[0030] Multiple layers of steps are arranged on the inner wall of the transfer tube 200, and the number of the steps is not less than two layers. For example, in the embodiment of the present utility model, three layers of internal steps are arranged on the inner wall of the transfer tube 200, and the inner wall surface of the transfer tube 200 includes the treads of the three layers of internal steps and four vertical surfaces adjacent to the three treads; it should be noted that the lowest internal step layer is located at one end of the transfer tube 200 in the channel of the pipe mouth 100, and the three layers of internal steps extend from the inside to the outside in the transfer tube 200; one end of the detection tube 400 is connected to one of the vertical surfaces adjacent to the treads of the three layers of internal steps, and the end thereof connected to the vertical surface is abutted against the tread at the inner end of the vertical surface, so that the detection tube 400 can be limited.

[0031] The detection tube 400 is detachably connected to the vertical surface by a threaded connection, but not limited to a threaded connection. Figure 4-5 Since the inner diameters of the multiple vertical planes are different, detection tubes 400 of different sizes can be installed on different vertical planes through different connection positions, so that the adapter tube 200 is suitable for detection tubes 400 of various diameters, which is beneficial for users to expand their usage needs.

[0032] The working principle of this utility model:

[0033] The outside of the pipe mouth 100 in the specific surface area measuring tube of the utility model is provided with a wear-resistant coating. When the pipe mouth 100 is installed on the detection instrument, the wear resistance of the pipe mouth 100 is improved, which is beneficial to avoid the outer surface of the pipe mouth 100 from being worn, and prevent leakage and the like caused by damage to the outer surface of the pipe mouth 100; and the inner wall of the adapter tube 200 is provided with multiple layers of steps to form a plurality of vertical surfaces with different inner diameters. Therefore, different sizes of detection tubes 400 can be installed on different vertical surfaces through different connection positions, so that the adapter tube 200 is suitable for detection tubes 400 of various diameters, which is beneficial to the user to expand the usage needs.

[0034] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A specific surface area measuring tube, characterized in that: It comprises a pipe mouth (100), one end of the pipe mouth (100) being detachably connected to a transfer pipe (200), the transfer pipe (200) being internally connected to a detection pipe (400); and the outer surface of the pipe mouth is provided with a wear-resistant coating.

2. The specific surface area measuring tube according to claim 1, characterized in that: The wear-resistant coating is a zirconium oxide coating.

3. The specific surface area measuring tube according to claim 1, characterized in that: The pipe mouth (100) is spherical, and a hole with two ends opened is provided at the center of the sphere, and the central axis of the hole is arranged colinearly with the axis of the sphere; the adapter tube (200) is detachably connected to the inside of one end of the hole.

4. The specific surface area measuring tube according to claim 3, characterized in that: An outer wall of the transfer tube (200) is provided with an outer step, and an outer circular portion connected to the tread of the outer step is detachably inserted into the hole of the tube opening (100).

5. The specific surface area measuring tube according to claim 4, characterized in that: The adapter tube (200) is inserted into the hole of the tube opening (100) and has an external thread (201) on its outer cylindrical tube wall, and an internal thread (101) matching the external thread (201) is provided on the inner wall of the hole.

6. The specific surface area measuring tube according to claim 4, characterized in that: A sealing gasket (300) is installed on the step tread on the outer wall of the transfer tube (200).

7. The specific surface area measuring tube according to claim 1, characterized in that: The inner wall of the transfer tube (200) is provided with multiple layers of steps, and one end of the detection tube (400) is connected to one of the vertical surfaces adjacent to the treads of the multiple layers of steps.

8. The specific surface area measuring tube according to claim 7, characterized in that: One end of the detection tube (400) connected to (200) is disposed against the tread of one of the steps.

9. The specific surface area measuring tube according to claim 8, characterized in that: One end of the detection tube (400) is threadedly connected to one of the vertical surfaces adjacent to the multi-layer step treads.

Images