High-frequency induction sample melting machine and sample preparation anti-falling mechanism thereof

Abstract

The utility model relates to the technical field of fluorescence spectrum analysis, and discloses a high-frequency induction sample melting machine and a sample preparation anti-falling mechanism of the high-frequency induction sample melting machine. The bracket pressing ring comprises a pressing part used for pressing the heat insulation bracket on the induction coil, a rotating part used for being rotationally connected with the fixed seat, and a connecting part used for connecting the pressing part and the rotating part; the first resetting piece is arranged between the fixed seat and the rotating part and is used for driving the bracket pressing ring to rotate and reset; the sliding block is in sliding connection with the rotating part; the second resetting piece is arranged between the sliding block and the rotating part and is used for driving the sliding block to reset; the crucible pressing rod is arranged on the upper end face of the sliding block and used for preventing the crucible from falling off when the melt is poured out. According to the anti-falling mechanism for sample preparation, the heat insulation bracket can be pressed on the induction coil by using the bracket pressing ring, so that the heat insulation bracket is prevented from falling off the induction coil; the crucible pressing rod can be used for limiting the movement of the crucible in the height direction, so that the crucible is prevented from falling off when molten liquid is poured.

Description

Technical Field

[0001] The utility model relates to the technical field of fluorescence spectrum analysis, and more specifically, to a sample preparation anti-drop mechanism. In addition, the utility model also relates to a high-frequency induction sample melting machine comprising the sample preparation anti-drop mechanism. Background Art

[0002] In X-ray fluorescence spectrometry, borate melting is often used for sample pretreatment. The melting equipment for preparing borate fused sheets mainly includes high-frequency induction melting machine, silicon carbon rod / tube melting machine, etc.

[0003] The existing high-frequency induction melting machine uses a dragging mechanism to pull the rotating disk to make a cycloidal motion around the central axis. The induction coil is arranged on the rotating disk, the heat insulation bracket is sleeved in the induction coil, and the heat insulation bracket is tightly wrapped around the induction coil with high-temperature insulating tape to prevent the heat insulation bracket from falling out, and the crucible is connected to the heat insulation bracket by a clamping method.

[0004] Due to the high-temperature radiation environment, the high-temperature insulating tape will crack and become powder after a period of use, causing the thermal insulation bracket to fall off; under the action of the swing and swing inertia of the rotating disk, the crucible gap and the thermal insulation bracket gap may be aligned, causing the connection between the two to fail. Therefore, when the rotating disk rotates to the pouring position to pour the melt, there is a risk of the crucible falling off.

[0005] In summary, how to solve the problem of the thermal insulation bracket and the crucible falling off and falling off is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a sample preparation anti-falling mechanism, which can avoid the problem of the heat insulation bracket and the crucible falling off.

[0007] In addition, the utility model also provides a high-frequency induction sample melting machine including the sample preparation anti-falling mechanism.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A sample preparation anti-drop mechanism, comprising:

[0010] A fixed seat, used for connecting with the rotating disk;

[0011] The support pressing ring comprises a crimping portion for pressing the heat insulating support tightly against the induction coil, a rotating portion for rotatably connecting with the fixing seat, and a connecting portion for connecting the crimping portion and the rotating portion;

[0012] A first reset member, disposed between the fixing seat and the rotating portion, and used to drive the bracket pressing ring to rotate and reset;

[0013] A slider, slidably connected to the rotating part;

[0014] A second reset member, disposed between the slider and the rotating portion, and used to drive the slider to reset;

[0015] The crucible pressing rod arranged on the upper end surface of the sliding block is used to prevent the crucible from falling when pouring the molten liquid.

[0016] Preferably, the slider includes a slider body and a lower fixed plate arranged on the lower end surface of the slider body, the slider body is provided with a mounting hole connected to the lower end surface of the slider body, and the lower fixed plate is connected to the slider body through a connecting piece to cooperate with the mounting hole to press the rotating part.

[0017] Preferably, the lower fixing plate is connected to the slider body via connecting bolts.

[0018] Preferably, the fixing seat is symmetrically arranged with respect to the induction coil and perpendicular to a symmetry plane of the rotating disk.

[0019] Preferably, shaft seats are provided on both sides of the horizontal plate of the fixing seat, and the rotating part is installed between the shaft seats on both sides through a pin shaft.

[0020] Preferably, the crimping portion is installed in a crimping ring groove on the upper end surface of the thermal insulation bracket.

[0021] Preferably, the upper end surface of the slider is provided with a pressure rod mounting hole for mounting the crucible pressure rod, and the side surface of the slider is provided with a locking hole for mounting a set screw, and the locking hole is communicated with the pressure rod mounting hole.

[0022] Preferably, the crucible pressure rod comprises a horizontal pressure rod and an L-shaped support rod, the lower end of the L-shaped support rod is inserted into the pressure rod mounting hole, and the horizontal pressure rod is sleeved outside the L-shaped support rod.

[0023] A high-frequency induction sample melting machine comprises the sample preparation anti-dropping mechanism described in any one of the above items.

[0024] When in use, firstly control the support pressing ring to rotate relative to the fixing seat, so that the crimping part moves away from the top of the induction coil, and insert the heat insulation support into the induction coil, and then release the support pressing ring, so that the crimping part is reset under the action of the first reset member and the heat insulation support is pressed tightly onto the induction coil;

[0025] Then push the slider to slide toward one end relatively close to the fixed seat, so that the crucible pressure rod moves away from the top of the insulation bracket, put the crucible into the insulation bracket, and rotate the crucible so that the gaps of the two are staggered, and then release the slider to reset the crucible pressure rod under the action of the second reset member. At this time, the crucible pressure rod is located above the crucible.

[0026] The sample preparation anti-falling mechanism provided by the utility model can use the bracket pressure ring to press the heat insulating bracket against the induction coil, thereby preventing the heat insulating bracket from falling out of the induction coil after the high-temperature insulating tape fails; and use the crucible pressure rod to limit the movement of the crucible in the height direction, which can effectively prevent the crucible from falling when pouring the molten liquid.

[0027] In addition, the utility model also provides a high-frequency induction sample melting machine including the sample preparation anti-falling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 A partial explosion schematic diagram of a specific embodiment 1 of the sample preparation anti-falling mechanism provided by the utility model;

[0030] Figure 2 for Figure 1 A top view schematic diagram of

[0031] Figure 3 for Figure 1 Schematic diagram of the assembly of the sample preparation anti-falling mechanism;

[0032] Figure 4 for Figure 3 Schematic diagram of the status when in use;

[0033] Figure 5 It is an assembly schematic diagram of the specific embodiment 2 of the sample preparation anti-falling mechanism provided by the utility model.

[0034] Figure 1-Figure 5 middle:

[0035] 01 is a rotating disk, 02 is an induction coil, 03 is a heat-insulating bracket, 04 is a crucible, 1 is a fixed seat, 2 is a bracket pressure ring, 3 is a pin shaft, 4 is a slider, 41 is a lower fixed plate, 5 is a crucible pressure rod, 51 is a horizontal pressure rod, 52 is an L-shaped support rod, 6 is a reset torsion spring, 7 is a reset spring, and 8 is a set screw. DETAILED DESCRIPTION

[0036] 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 in 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.

[0037] The core of the utility model is to provide a sample preparation anti-falling mechanism, which can avoid the falling off and dropping problems of the heat insulation support and the crucible.

[0038] In addition, the utility model also provides a high-frequency induction sample melting machine including the sample preparation anti-falling mechanism.

[0039] The sample preparation anti-falling mechanism provided by the utility model comprises:

[0040] A fixed seat 1, used for connecting with the rotating disk 01;

[0041] The support pressing ring 2 includes a crimping portion for pressing the heat insulating support 03 tightly against the induction coil 02, a rotating portion for rotationally connecting with the fixing seat 1, and a connecting portion for connecting the crimping portion and the rotating portion;

[0042] The first reset member is disposed between the fixed seat 1 and the rotating part, and is used to drive the bracket pressing ring 2 to rotate and reset;

[0043] A slider 4 is slidably connected to the rotating part;

[0044] A second reset member is provided between the slider 4 and the rotating part, and is used to drive the slider 4 to reset;

[0045] The crucible pressing rod 5 provided on the upper end surface of the slide block 4 is used to prevent the crucible 04 from falling when pouring the melt.

[0046] Please refer to Figure 3 The sample preparation anti-falling mechanism is arranged on the rotating disk 01 through a fixing seat 1. The fixing seat 1 can be connected to the rotating disk 01 through common detachable connection methods such as bolt connection and pin connection, and can also be connected to the rotating disk 01 through non-detachable connection methods such as welding connection.

[0047] In order to arrange the support pressing ring 2 opposite to the heat insulating support 03 and the crucible pressing rod 5 opposite to the crucible 04 , preferably, the fixing seat 1 can be arranged symmetrically with respect to the symmetry plane of the induction coil 02 perpendicular to the rotating disk 01 .

[0048] At this time, the center of the crimping portion of the bracket pressing ring 2 is located on the axis of the heat insulating bracket 03, and the bracket pressing ring 2 is arranged directly opposite to the heat insulating bracket 03, the contact area between the two is large, and the bracket pressing ring 2 has a strong pre-tightening force on the heat insulating bracket 03;

[0049] The crucible pressure rod 5 is located in a symmetric plane of the crucible 04 perpendicular to the rotating disk 01 . Compared with an offset crucible pressure rod 5 , the crucible pressure rod 5 has a better effect of preventing the crucible 04 from falling.

[0050] The specific material, structure, shape and size of the fixing seat 1 are determined according to factors such as the size of the rotating disk 01 in actual production, and will not be described in detail here.

[0051] The support pressing ring 2 is rotatably connected to the fixing seat 1, so that the support pressing ring 2 can be lifted to put into the heat insulation support 03, and the support pressing ring 2 can be lowered to press the heat insulation support 03; please refer to Figure 1 Axle seats are provided on both sides of the horizontal plate of the fixed seat 1, and the rotating part is installed between the axle seats on both sides through the pin shaft 3.

[0052] The rotating part is usually configured as a rotating rod, and the end of the rotating part can be provided with a pin hole for installing the pin shaft 3, and can also be provided with an arc hook connected to the pin shaft 3; the specific connection method between the rotating part and the pin shaft 3 is determined according to actual production needs such as production cost, assembly convenience, etc.

[0053] In order to avoid interfering with the normal setting of the induction coil 02, the fixing seat 1 is usually arranged below the hose used to connect the induction coil 02 to the rotating disk 01. Therefore, the bracket pressing ring 2 is provided with a connecting part between the crimping part and the rotating part, and the connecting part is mostly provided with a vertically arranged connecting rod.

[0054] The clamping part is used to press the thermal insulation bracket 03 against the induction coil 02. Considering that the thermal insulation bracket 03 is set to be nearly circular, the clamping part is mostly set to be an arc-shaped clamping ring; the specific shape and size of the clamping part are determined according to the shape and size of the thermal insulation bracket 03 in actual production.

[0055] In order to enable the clamping part to better clamp the thermal insulation bracket 03, preferably, the clamping part can be arranged to be installed in the pressure ring groove on the upper end surface of the thermal insulation bracket 03, so as to increase the contact area between the two and better prevent the thermal insulation bracket 03 from escaping from the induction coil 02.

[0056] In order to achieve automatic resetting of the bracket pressing ring 2 after rotation, a first resetting member is provided between the fixed seat 1 and the rotating part of the bracket pressing ring 2. The first resetting member can be a resetting torsion spring 6 sleeved on the pin shaft 3, or it can be a resetting spring provided between the rotating part and the vertical plate of the fixed seat 1.

[0057] Please refer to Figure 1 A return torsion spring 6 is provided between the fixed seat 1 and the rotating part of the bracket pressing ring 2. The return torsion spring 6 is sleeved outside the pin shaft 3. One end of the return torsion spring 6 is connected to the fixed seat 1, and the other end of the return torsion spring 6 is connected to the rotating part of the bracket pressing ring 2. When the bracket pressing ring 2 is rotated to lift it, the return torsion spring 6 is twisted and accumulates elastic potential energy.

[0058] The crucible pressure rod 5 is higher than the support pressure ring 2 and is used to press the crucible 04 to prevent the crucible 04 from falling when pouring the molten liquid. Therefore, the crucible pressure rod 5 can at least press the wall surface on one side of the crucible 04. In order to facilitate the loading of the crucible 04 into the insulation support 03, the crucible pressure rod 5 is slidably connected to the support pressure ring 2 through the slider 4.

[0059] In order to facilitate the automatic resetting of the slider 4 , a second resetting member is provided between the slider 4 and the rotating part, and the second resetting member is usually configured as a resetting spring 7 .

[0060] Considering that the support ring 2 and the crucible pressure rod 5 are close to the crucible 04 and are in a high-temperature radiation environment for a long time, in order to avoid frequent replacement, the support ring 2 and the crucible pressure rod 5 are usually set as ceramic parts, which have good high-temperature resistance and long service life.

[0061] When in use, firstly control the support pressing ring 2 to rotate relative to the fixing seat 1, so that the crimping part moves away from the top of the induction coil 02, and insert the heat insulation support 03 into the induction coil 02, and then release the support pressing ring 2, so that the crimping part is reset under the action of the first reset member and the heat insulation support 03 is pressed tightly against the induction coil 02;

[0062] Then push the slider 4 to slide toward one end relatively close to the fixed seat 1, so that the crucible pressure rod 5 moves away from the top of the insulation bracket 03, put the crucible 04 into the insulation bracket 03, and rotate the crucible 04 so that the gaps of the two are staggered with each other, then release the slider 4, so that the crucible pressure rod 5 is reset under the action of the second reset member, and at this time, the crucible pressure rod 5 is located above the crucible 04.

[0063] In this embodiment, the support pressing ring 2 can be used to press the thermal insulation support 03 against the induction coil 02, thereby preventing the thermal insulation support 03 from falling out of the induction coil 02 after the high-temperature insulating tape fails; and the crucible pressure rod 5 can be used to limit the movement of the crucible 04 in the height direction, which can effectively prevent the crucible 04 from falling when pouring the molten liquid.

[0064] The slider 4 is provided with a mounting hole for mounting the rotating part of the bracket pressure ring 2. The mounting hole can be set as a closed hole or a non-closed hole. When the rotating part is rotatably connected with the pin shaft 3 through an arc hook, the closed mounting hole is often difficult to pass through the arc hook at the end of the rotating part. It is necessary to modify and test the size of the mounting hole and the shape and size of the arc hook for many times so that the mounting hole can pass through the arc hook smoothly.

[0065] In order to facilitate the sliding connection between the slider 4 and the bracket pressure ring 2, preferably, the slider 4 can be arranged to include a slider body and a lower fixed plate 41 arranged on the lower end surface of the slider body, the slider body is provided with a mounting hole connected to the lower end surface of the slider body, and the lower fixed plate 41 is connected to the slider body through a connecting piece to cooperate with the mounting hole to clamp the rotating part.

[0066] The connecting parts can be specifically set as connecting bolts, connecting pins, etc. The number of connecting parts is at least two, and at least one connecting part is provided on the left and right sides of the mounting hole respectively; the specific number, size and distribution of the connecting parts are determined according to the structure and size of the slider 4 in actual production, and will not be repeated here.

[0067] During assembly, first install the rotating part of the bracket pressure ring 2 into the mounting hole of the slider body, then set the lower fixing plate 41 close to the lower end surface of the slider body, and finally use the connecting piece to connect and fix the lower fixing plate 41 and the slider body, and press the rotating part into the mounting hole.

[0068] On the basis of the above embodiment, the upper end surface of the slider 4 may be provided with a pressure rod mounting hole for mounting the crucible pressure rod 5, and the side surface of the slider 4 may be provided with a locking hole for mounting a set screw 8, and the locking hole is connected to the pressure rod mounting hole.

[0069] The locking hole may be communicated only with the outer side of the pressure rod mounting hole, and the crucible pressure rod 5 may be pressed against the inner wall surface of the pressure rod mounting hole by means of the set screw 8;

[0070] The locking hole can also be set through the pressure rod installation hole, and a bolt installation hole for passing the set screw 8 is provided at the bottom of the crucible pressure rod 5, and the crucible pressure rod 5 is fixed by threaded connection between the set screw 8 and the locking hole.

[0071] On the basis of the above embodiments, considering that different parts of the crucible pressure rod 5 are affected to different degrees by the high temperature environment, the crucible pressure rod 5 can be configured to include a horizontal pressure rod 51 and an L-shaped support rod 52, wherein the lower end of the L-shaped support rod 52 is inserted into the pressure rod mounting hole, and the horizontal pressure rod 51 is sleeved outside the L-shaped support rod 52.

[0072] The horizontal pressure rod 51 is used to hold down the crucible 04 to prevent the crucible 04 from falling when pouring the melt. Since the crucible 04 is in a high-temperature radiation environment for a long time, the horizontal pressure rod 51 is usually set as a ceramic pressure rod, or made of other high-temperature resistant materials;

[0073] The L-shaped support rod 52 is far away from the crucible 04 and is less affected by the high temperature environment. It can be set as a ceramic support rod or a stainless steel support rod to save production costs.

[0074] In this embodiment, the horizontal pressure rod 51 and the L-shaped support rod 52 are detachably connected, so the horizontal pressure rod 51 can be replaced alone, which has lower maintenance costs than replacing the entire crucible pressure rod 5;

[0075] Moreover, during assembly, after the crucible 04 is loaded into the heat-insulating bracket 03, the horizontal pressure rod 51 and the L-shaped support rod 52 are connected. The horizontal pressure rod 51 no longer affects the normal placement of the crucible 04, and the second reset member structure can be omitted. Figure 5 As shown, at this time, the horizontal pressure rod 51 can press the two side walls of the crucible 04 at the same time.

[0076] In addition to the above-mentioned sample preparation anti-dropping mechanism, the present invention also provides a high-frequency induction sample melting machine including the sample preparation anti-dropping mechanism disclosed in the above-mentioned embodiment. For the structures of other parts of the high-frequency induction sample melting machine, please refer to the prior art and will not be described in detail herein.

[0077] It should be noted that the first and second in the first restoring member and the second restoring member in the present application document are only used to distinguish the difference in position and do not contain any limitation on the order.

[0078] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0079] The high-frequency induction sample melting machine and the sample preparation anti-drop mechanism provided by the utility model are introduced in detail above. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A sample preparation anti-falling mechanism, characterized in that: include: A fixed seat (1), used for connecting with the rotating disk (01); The support pressing ring (2) comprises a crimping portion for pressing the heat insulating support (03) against the induction coil (02), a rotating portion for being rotatably connected to the fixing seat (1), and a connecting portion for connecting the crimping portion and the rotating portion; A first reset member is disposed between the fixing seat (1) and the rotating portion and is used to drive the bracket pressing ring (2) to rotate and reset; A slider (4) is slidably connected to the rotating part; A second reset member is disposed between the slider (4) and the rotating portion and is used to drive the slider (4) to reset; The crucible pressing rod (5) arranged on the upper end surface of the sliding block (4) is used to prevent the crucible (04) from falling when pouring the molten liquid.

2. The sample preparation anti-falling mechanism according to claim 1, characterized in that: The slider (4) comprises a slider body and a lower fixing plate (41) arranged on the lower end surface of the slider body, the slider body is provided with a mounting hole connected to the lower end surface of the slider body, and the lower fixing plate (41) is connected to the slider body through a connecting piece to cooperate with the mounting hole to press the rotating part.

3. The sample preparation anti-falling mechanism according to claim 2, characterized in that: The lower fixing plate (41) is connected to the slider body via connecting bolts.

4. The sample preparation anti-falling mechanism according to any one of claims 1 to 3, characterized in that: The fixing seat (1) is symmetrically arranged with respect to the induction coil (02) and perpendicular to the symmetry plane of the rotating disk (01).

5. The sample preparation anti-falling mechanism according to any one of claims 1 to 3, characterized in that: Axle seats are provided on both sides of the horizontal plate of the fixed seat (1), and the rotating part is installed between the axle seats on both sides through a pin shaft (3).

6. The sample preparation anti-falling mechanism according to any one of claims 1 to 3, characterized in that: The crimping portion is installed in a crimping ring groove on the upper end surface of the heat insulation bracket (03).

7. The sample preparation anti-falling mechanism according to any one of claims 1 to 3, characterized in that: The upper end surface of the slider (4) is provided with a pressure rod mounting hole for mounting the crucible pressure rod (5), and the side surface of the slider (4) is provided with a locking hole for mounting a set screw (8), and the locking hole is communicated with the pressure rod mounting hole.

8. The sample preparation anti-falling mechanism according to claim 7, characterized in that: The crucible pressure rod (5) comprises a horizontal pressure rod (51) and an L-shaped support rod (52), the lower end of the L-shaped support rod (52) is inserted into the pressure rod installation hole, and the horizontal pressure rod (51) is sleeved outside the L-shaped support rod (52).

9. A high frequency induction melting machine, characterized in that: The invention comprises the sample preparation anti-falling mechanism as described in any one of claims 1 to 8.

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