A concave groove type track for the in-and-out of porcelain boats of a sulfur tester

Abstract

The utility model belongs to sulfur appearance equipment technical field relates to a kind of recessed channel track of porcelain boat of sulfur appearance in and out, including the combustion tube of cross section is circular, a pair of outward protruding slide rail is symmetrically arranged to combustion tube inner wall along the axis direction, porcelain boat supporting plate is equipped in combustion tube inside, porcelain boat supporting plate two sides are equipped with the recessed slide groove, and the slide groove section shape is matched with slide rail, and slide groove is engaged in slide rail and constitutes sliding pair.The utility model designs the protruding notch in combustion tube, and recess is designed in porcelain boat supporting plate two sides, and supporting plate recess is sent sample along the slide rail of combustion tube, the trajectory of supporting plate sample sending can be controlled, and supporting plate stable sample sending cannot be turned over.

Description

Technical Field

[0001] This utility model belongs to the technical field of sulfur analyzer equipment, specifically relating to a grooved track for the movement of a porcelain boat in a sulfur analyzer. Background Technology

[0002] Sulfur analyzers, used to detect the sulfur content of materials, are typically equipped with a combustion tube made of high-temperature resistant quartz or ceramic with a circular cross-section. During the testing process, the ceramic boat carrying the sample needs to be pushed to the high-temperature zone of the combustion tube via a rectangular flat support plate.

[0003] There is a geometric mismatch between the inner wall of the circular combustion tube and the rectangular ceramic boat support plate. Due to the lack of radial constraint during the pushing process, the support plate is prone to circumferential deflection or even overturning, causing the ceramic boat to tip over. The tipped-over sample and broken ceramic fragments are scattered inside the combustion tube, seriously contaminating the samples to be tested later, resulting in increased fluctuations in sulfur content test results and significantly reduced data repeatability.

[0004] Scattered high-temperature samples accumulate on the inner wall of the combustion tube over a long period, continuously eroding the tube material under high-temperature conditions. This phenomenon not only causes localized thinning of the tube wall and concentration of thermal stress, but also leads to premature failure of the combustion tube. Although there are solutions to improve stability by increasing the width of the support plate or reducing the tube diameter, the former is limited by the size of the standard ceramic boat and cannot be implemented, while the latter causes airflow turbulence and affects combustion efficiency. There are also designs that use guide rails externally mounted on the combustion tube, but this compromises airtightness and exacerbates heat loss.

[0005] There is an urgent need to develop an internal guiding structure adapted to a circular combustion tube to fundamentally solve the problems of unstable movement of the ceramic boat support plate and equipment corrosion while ensuring airtightness and thermal efficiency. Therefore, a grooved track for the movement of the ceramic boat in the sulfur analyzer is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a grooved track for the entry and exit of a porcelain boat in a sulfur analyzer, which has a built-in axial guiding function, and solves the problem of sample contamination and equipment corrosion caused by the unstable movement of the porcelain boat support plate in the circular combustion tube in the prior art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a grooved track for the entry and exit of a porcelain boat in a sulfur analyzer, including a combustion tube with a circular cross-section. A pair of outwardly protruding slide rails are symmetrically arranged along the axial direction on the inner wall of the combustion tube. A porcelain boat support plate is provided inside the combustion tube. Inwardly recessed slide grooves are provided on both sides of the porcelain boat support plate. The cross-sectional shape of the slide grooves matches the slide rails, and the slide grooves engage with the slide rails to form a sliding pair.

[0008] Preferably, the cross-section of the slide rail is one of trapezoidal, rectangular, or semi-circular.

[0009] Preferably, the slide rail is integrally formed with the inner wall of the combustion tube.

[0010] Preferably, the groove depth of the ceramic boat support plate is greater than 1 / 2 of the height of the slide rail, and the clearance tolerance between the groove and the slide rail is less than 0.5mm.

[0011] Preferably, the bottom of the ceramic boat support plate is provided with reinforcing ribs, and the sliding groove is located above the side of the reinforcing ribs.

[0012] Preferably, the combustion tube inlet end is provided with a guide flare, and the guide flare slide rail has a slope transition structure.

[0013] Preferably, the slide rail surface is covered with a ceramic coating, and a lubrication bushing is embedded in the slide groove.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. This utility model has a protruding slot inside the combustion tube and grooves on both sides of the ceramic boat tray. The tray grooves feed the sample along the slide rail of the combustion tube, which can control the trajectory of the tray feeding the sample and ensure that the tray feeds the sample stably without tipping over.

[0016] 2. This utility model has a built-in axial guiding function, which solves the problem of sample contamination and equipment corrosion caused by the unstable movement of the ceramic boat support plate in the circular combustion tube in the prior art. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the grooved track for the ceramic boat of a sulfur analyzer to enter and exit according to one embodiment.

[0019] In the above diagram, 1 is the combustion tube, 2 is the slide rail, 3 is the ceramic boat support plate, 4 is the slide groove, 5 is the reinforcing rib, and 6 is the guide flare. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1, such as Figure 1 As shown, a grooved track for the movement of a porcelain boat in a sulfur analyzer includes a combustion tube 1 with a circular cross-section. A pair of outwardly protruding slide rails 2 are symmetrically arranged along the axial direction on the inner wall of the combustion tube 1. The combustion tube 1 serves as a high-temperature reaction vessel, providing a combustion environment for the sample. The slide rails 2 are axially extending protruding tracks, forming a guiding reference surface. A porcelain boat support plate 3 is located inside the combustion tube 1. The porcelain boat support plate 3 has inwardly recessed grooves 4 on both sides. The cross-sectional shape of the grooves 4 matches that of the slide rails 2, and the grooves 4 engage with the slide rails 2 to form a sliding pair. The porcelain boat support plate 3 carries the porcelain boat and advances axially along the slide rails 2. The grooves 4 and the slide rails 2 form an embedded sliding pair. The slide rails 2 restrict the circumferential degrees of freedom of the porcelain boat support plate 3, eliminating overturning torque.

[0023] The specific design of the aforementioned key components will be discussed in detail below:

[0024] The cross-section of the slide rail 2 is one of trapezoidal, rectangular, or semi-circular. The trapezoidal cross-section has an inclined surface that guides the automatic correction of the pallet position, and the 45° inclined surface prevents dust accumulation and jamming; the rectangular cross-section is easy to process, and the cost is reduced by one-time CNC milling, and the vertical force-bearing surface resists lateral impact forces; the semi-circular cross-section disperses stress, the arc structure eliminates stress concentration points, and the line contact reduces frictional resistance.

[0025] The slide rail 2 is integrally formed with the inner wall of the combustion tube 1. The preferred integral forming design avoids high-temperature failure of the connecting parts. It eliminates the risk of high-temperature creep of bolts or welds, the seamless structure prevents gas leakage, and the expansion coefficient of the same material is matched to avoid thermal stress cracking.

[0026] The groove 4 of the ceramic boat pallet 3 has a depth greater than half the height of the slide rail 2, and the clearance tolerance between the groove 4 and the slide rail 2 is less than 0.5mm. The groove 4 depth > half the height of the slide rail 2 ensures a proper engagement depth and prevents derailment. The clearance tolerance < 0.5mm eliminates lateral sway and reduces pallet offset. The bottom of the ceramic boat pallet 3 is provided with a reinforcing rib 5, and the groove 4 is located above and to the side of the reinforcing rib 5. The reinforcing rib 5 increases rigidity, increases the moment of inertia of the cross-section, improves bending stiffness, resists thermal deformation, and maintains the straightness of the groove 4.

[0027] The combustion tube 1 has a guide flare 6 at its inlet end, with a bevel angle of 15°-20°, preferably 17°, and a flare length ≥50mm. The guide rail 2 of the guide flare 6 has a beveled transition structure. The guide flare 6 helps with quick rail alignment, and the beveled transition structure of the inlet end slide rail 2 guides the slide groove 4 to correct its position, reducing operational difficulty. The surface of the slide rail 2 is covered with a ceramic coating, which resists sulfides and corrosion. The slide groove 4 is fitted with a lubricating bushing, which reduces sliding resistance and extends service life.

[0028] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A grooved track for the entry and exit of a ceramic boat in a sulfur analyzer, comprising a combustion tube with a circular cross-section, characterized in that, The inner wall of the combustion tube is symmetrically provided with a pair of outwardly protruding slide rails along the axial direction. The combustion tube is equipped with a ceramic boat support plate. The ceramic boat support plate has inwardly recessed slide grooves on both sides. The cross-sectional shape of the slide grooves matches the slide rails, and the slide grooves engage with the slide rails to form a sliding pair. The cross-section of the slide rail is one of trapezoidal, rectangular, or semi-circular. The slide rails are integrally formed with the inner wall of the combustion tube. The depth of the slide grooves on the ceramic boat support plate is greater than 1 / 2 of the height of the slide rails. The clearance tolerance between the slide grooves and the slide rails is less than 0.5mm. The bottom of the ceramic boat support plate is provided with reinforcing ribs. The slide grooves are located above the reinforcing ribs. The inlet end of the combustion tube is provided with a guide flare. The bevel angle of the guide flare is 15°-20° and the flare length is ≥50mm. The slide rail of the guide flare has a bevel transition structure. The surface of the slide rail is covered with a ceramic coating. The slide grooves are embedded with lubricating bushings.

Images