CN107998951B

CN107998951B - Closed automatic stirrer for fire test

Info

Publication number: CN107998951B
Application number: CN201711271409.7A
Authority: CN
Inventors: 李华昌; 陈潮炎; 张侠
Original assignee: Beikuang Testing Technology Co ltd
Current assignee: Beikuang Testing Technology Co ltd
Priority date: 2017-12-05
Filing date: 2017-12-05
Publication date: 2023-08-08
Anticipated expiration: 2037-12-05
Also published as: CN107998951A

Abstract

The invention discloses a closed automatic stirrer for fire test, which comprises: a bracket; the lower box body is in rotary motion relative to the bracket through a first rotating shaft and a second rotating shaft which are fixed at two sides, one side of the lower box body is hinged with the upper box body through a hinge, and the other side of the lower box body is connected with the upper box body through a locking device; the upper box body comprises: the device comprises an elastic layer for sealing an opening of a crucible, a hard supporting plate for fixing the elastic layer, an elastic limiting device for controlling the supporting plate to approach or be far away from the inner bottom surface of the upper box body within a limited distance, wherein the supporting plate is contacted with the bottom surface of the upper box body through an inflatable and deflatable air bag with a valve; the lower box body is internally provided with a crucible groove for placing a crucible. The advantages are that: through at the embedded gasbag and the elastic layer of last box, let the crucible can be abundant extrusion seal, avoid artifical mechanical extrusion fixed, saved manpower, the key is can apply more even and the extrusion effort of the control of being convenient for to the elastic layer through the effect of gasbag.

Description

Closed automatic stirrer for fire test

Technical Field

The invention relates to the field of fire test gold, in particular to a closed automatic stirrer for fire test gold.

Background

The fire gold method for measuring noble metals such as gold, silver and the like is continued as a classical method to date, and has irreplaceable functions in modern chemical analysis, especially for measuring gold components in high-content gold raw materials or pure gold, the accuracy and the precision are not as high as those of other direct measurement methods. In the arbitration analysis of gold and silver content, fire test analysis can give the result of convincing parties. With the development of scientific technology, new technologies for analyzing gold and silver are increasing, and a method for determining the content of noble metals by combining a fire gold test method with an advanced instrument can play a great role. However, the fire test method has more manual work, longer operation flow and higher experience requirements of analysts than other methods. Therefore, the automation of the equipment is improved, and the operation is simplified, mechanized and standardized.

In the fire test analysis process, samples and mixed materials in a crucible are required to be stirred uniformly before being fed into a smelting furnace, most laboratories at present mainly use manual stirring, and although some laboratories introduce machine stirring, the domestic crucible has the hidden trouble of mineral scattering when the machine is used for mixing the samples due to non-uniform size and model of the crucible. In this regard, the present invention provides a solution before that, the patent name is "a crucible mixing machine", the application number is: 201710328512. X. However, when the technical scheme is implemented in detail, the following technical problems still exist: because the crucible is different in size and is always inclined at different angles when placed, after the upper cover is closed, the fastening device using threads needs to be screwed to a certain degree to have enough pressure to seal the opening of the crucible. The above operation has two disadvantages: 1. after multiple uses, the screw rod can be subjected to fatigue damage and needs maintenance. 2. When an operator uses the screw-down device, the screw-down time is long, and the labor is wasted, so that the actual working efficiency is reduced; therefore, it is inconvenient to strictly control the practical use and the operability is poor.

In this respect, the invention proposes a new solution based on the prior art.

Disclosure of Invention

The invention aims to provide a closed automatic stirrer for fire test, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: a closed automatic stirrer for fire test, comprising: a bracket; the lower box body is in rotary motion relative to the bracket through a first rotating shaft and a second rotating shaft which are fixed at two sides, one side of the lower box body is hinged with the upper box body through a hinge, and the other side of the lower box body is connected with the upper box body through a locking device; the upper box body comprises: the device comprises an elastic layer for sealing an opening of a crucible, a hard supporting plate for fixing the elastic layer, an elastic limiting device for controlling the supporting plate to approach or separate from the inner bottom surface of the upper box body within a limited distance, wherein the supporting plate is contacted with the bottom surface of the upper box body through an inflatable and deflatable air bag; the lower box body is internally provided with a crucible groove for placing a crucible.

According to one embodiment of the invention: the first rotating shaft is of a tubular structure; the inflation and deflation department of gasbag is connected with the trachea, and this trachea is connected with the pneumatic rotary joint who establishes at first pivot free end after passing the through-hole on the first pivot pipe wall, pneumatic rotary joint passes through the trachea and is connected with the air supply.

According to one embodiment of the invention: the elastic limiting device comprises: the guide sliding rod penetrates through the top cover of the upper box body, one end of the guide sliding rod is vertically fixed with the supporting plate, and the free end of the guide sliding rod is fixed with the limiting block after penetrating through the spring.

According to one embodiment of the invention: after the second rotating shaft or the first rotating shaft is driven by the power part, the lower box body rotates relative to the bracket.

According to one embodiment of the invention: the power part is a servo motor.

According to one embodiment of the invention: the front of the upper box body is provided with a hollowed-out observation window.

According to one embodiment of the invention: the upper edge of the position where the upper box body is anastomosed with the lower box body is provided with a concave installation gap.

According to one embodiment of the invention: an inner base made of elastic materials is arranged in the lower box body, and a plurality of crucible grooves are formed in the inner base; the bottom of the crucible tank is uniformly provided with a plurality of convex correction blocks with consistent height.

According to one embodiment of the invention: the correction block is a round convex ring with consistent height.

According to one embodiment of the invention: the locking device is structurally a carriage hasp.

Compared with the prior art, the invention has the beneficial effects that: through at the embedded gasbag and the elastic layer of last box, let the crucible can be abundant extrusion seal, avoided needing artifical mechanical to extrude fixedly, saved manpower, the key is can apply the perpendicular extrusion effort of more even, more convenient control to the elastic layer through the effect of gasbag.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic back view of the present invention;

FIG. 3 is a schematic view of the internal structure of the upper case;

FIG. 4 is a schematic view of the internal structure of the lower case;

FIG. 5 shows another method of securing the correction block in the crucible trough.

In the figure: 1 bracket, 21 first rotating shaft, 211 through hole, 22 second rotating shaft, 3 upper box body, 31 elastic layer, 32 supporting plate, 33 air bag, 34 guiding slide bar, 35 spring, 36 limit block, 37 installation gap, 38 observation window, 4 lower box body, 41 inner base, 42 crucible groove, 43 correction block, 5 hinge, 6 locking device, 7 pneumatic rotary joint, 8 power part.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Fig. 1 to 5 show a closed automatic stirrer for fire test, comprising:

a support 1 which is placed on the ground or fixed to the ground, wherein universal wheels can be additionally arranged at the bottom of the support 1 for facilitating the movement;

the lower box 4 is rotatably moved relative to the support 1 through a first rotating shaft 21 and a second rotating shaft 22 fixed at two sides, and a specific structure can be that the first rotating shaft 21 and the second rotating shaft 22 are externally arranged on the support 1 through bearings, so that the crucible placed in the lower box 4 and the upper box 3 can be overturned by rotating and rolling to achieve the aim of mixing, one side of the lower box 4 is hinged with the upper box 3 through a hinge 5, the other side of the lower box 4 is connected with the upper box 3 through a locking device 6, and the locking device 6 is further structurally a carriage hasp or other devices in the prior art which can seal the upper box 3 and the lower box 4.

The upper case 3 includes: the elastic layer 31 for sealing the opening of the crucible can be made of elastic materials, such as rubber, silica gel or other composite materials, and a hard supporting plate 32 for fixing the elastic layer 31, wherein the hard supporting plate 32 has the function of extruding the elastic layer 31 to ensure that the elastic layer 31 can seal the crucible more tightly, and on the other hand, the relative moving distance between the elastic layer 31 and the upper box body 3 can be integrally increased to play a supporting role; the supporting plate 32 is contacted with the bottom surface of the upper box body 3 through an inflatable and deflatable air bag 33, the supporting plate 32 can have certain inflation force through the inflatable air bag 33, the supporting plate 32 is extruded through the inflated air bag 33, the crucible is further sealed by the elastic layer 31, and the elastic limiting device is used for controlling the approaching or separating of the supporting plate 32 relative to the inner bottom surface of the upper box body 3 within a limited distance; the elastic limiting device has the function of limiting, namely preventing the supporting plate 32 from being far away from the upper box body 3, so that the situation that the elastic layer 31 can not be attached to and tightly seal the crucible opening even after the air bag 33 is inflated can occur; the other aspect has the following functions: in order to prevent the elastic layer 31 from touching the crucible while the crucible is being placed, the crucible is contaminated with minerals. Further, the specific structure of the elastic limiting device may be: the elastic limiting device comprises: a guide slide bar 34 passing through the top cover of the upper case 3 and having one end vertically fixed to the support plate 32, and a free end of the guide slide bar 34 is fixed to a stopper 36 after passing through a spring 35. The supporting plate 32 can be pulled up to be close to the upper box body 3 under the condition that the air bag 33 is not inflated through deformation of the spring 35, the function of automatic recovery is achieved, and the function of the limiting block 36 is to better limit the spring 35 in an elastic compression state, so that the guide sliding rod 34 is ejected. Further, it is possible to let the guide slide bar 34 be a screw and the stopper 36 be a nut. The structure not only has the limiting function, but also can facilitate the disassembly and the cleaning of the elastic layer 31 and the supporting plate 32. After all, the support plate 32 is made of a hard material, but after a long time of use, it is fatigued by the hard material, and the elastic layer 31 is easily damaged, so that the cleanliness of mineral components in the crucible is easily affected by dirt, and therefore, the replacement is required. In order to better control the inflation and deflation of the air bag 33, although the air bag 33 can obtain a certain extrusion force given to the support plate 32 through a valve mechanism in the general sense in the prior art after inflation, when the air bag 33 is used for a long time, the air pressure of the air bag 33 can be slightly low, so that the sealing of the elastic layer 31 to the opening of the crucible can be affected, and in order to ensure that the air pressure in the air bag 33 is kept constant all the time more stably and more timely, the first rotating shaft 21 can be of a tubular structure; the inflation and deflation positions of the air bags 33 are connected with air pipes, the air pipes are connected with pneumatic rotary joints 7 arranged at the free ends of the first rotating shafts 21 after penetrating through holes 211 in the pipe walls of the first rotating shafts 21, and the pneumatic rotary joints 7 are connected with an air source through the air pipes. As shown in fig. 3, the air pipe connected with the air bag 33 passes through the hollow first rotating shaft 21, and in order to ensure that the air pipe is not twisted and folded along with the rotation of the first rotating shaft 21, the pneumatic rotary joint 7 is arranged, so that the air pressure of the air bag 33 can be continuously and stably supplied even if the lower box 4 rotates. The pressing force of the air bag 33 against the support plate 32 is ensured. Of course, in order to achieve more efficient mixing efficiency, it is necessary to achieve the mixing by means of electric mixing, and the lower housing 4 is rotated relative to the bracket 1 after the second shaft 22 or the first shaft 21 is driven by the power unit 8. The lower box body 4 can be automatically rotated and mixed, so that the physical strength is saved. Meanwhile, the power part 8 may be a low-speed motor as a power source for driving the lower case 4 to rotate, for example, the power part 8 is a servo motor. The stable rotation of the lower case 4 can be realized by providing the rotation power to the second rotation shaft 22 or the first rotation shaft 21 through the power part 8, and of course, the power part 8 can also comprise a speed change mechanism with some mechanical structures, etc., so that the rotation speed can be controlled manually, and the mode of electrified control of the rotation speed of the motor in the prior art can be utilized.

In order to better place the crucible in the lower case 4, in the prior art disclosed in the background art, the crucible groove 42 is made of an elastic material, and has the function of fixing the crucible, but also has the function of automatically aligning the elastic layer 31 to the opening of the crucible after the elastic layer 31 is pressed down. However, since the inner base 41 is a closed ring structure, the self-aligning elastic layer 31 is still limited by the closed ring, and the actual aligning angle is very small. Therefore, in fig. 4 and 5, the lower case 4 is provided with an inner base 41 made of elastic material, and the inner base 41 is provided with a plurality of crucible grooves 42; the bottom of the crucible tank 42 is uniformly provided with annular and highly uniform convex correction blocks 43, and the correction blocks 43 are spaced from the root of the crucible tank 42, and the distance cannot be the root of the bottom of the crucible tank 42, because the correction blocks 43 near the root do not have the capability of correcting the crucible by a larger angle. The correction blocks 43 may be arranged in a discontinuous ring shape as shown in fig. 5, or may be connected together in a ring shape as shown in fig. 4, but the heights of the correction blocks 43 are the same horizontal plane, so that, on one hand, the crucible can be elastically placed relative to the crucible groove 42 and the stability of the bottom of the crucible is ensured, on the other hand, after the elastic layer 31 extrudes the crucible, the upper edge of the opening of the crucible can be inclined by a larger angle due to the bottom correction blocks 43, compared with the prior art, the correction can be better and faster, and the problem of the inclination of the crucible placement can be more directly solved due to the combination of the extrusion of the elastic layer 31 on the upper surface and the extrusion of the correction blocks 43 on the bottom. Of course, the correction block 43 is a circular convex ring with uniform height. The overall circular shape ensures that the crucible is not easily crushed under the high pressure of the bladder 33.

In practical use, for better observing the crucible mixing, the front surface of the upper case 3 is provided with a hollowed-out observation window 38. The observer can visually mix various actual sudden situations in the room through the observation window 38.

Because the upper case 3 is embedded with the air bag 33, the support plate 32 and the elastic layer 31, the overall weight is relatively large, and in order to prevent fingers from being injured when the upper case 3 is closed onto the lower case 4, a concave mounting gap 37 can be further arranged at the upper edge of the upper case 3 at the position where the upper case and the lower case 4 are anastomosed. This mounting gap 37 can sufficiently ensure that a gap of more than 1 cm is provided between the upper casing 3 and the lower casing 4 even after the upper casing 3 is incorporated, so as to prevent occurrence of accidents.

Working principle: when the crucible mixing device is used, after the upper box body 3 is opened, the crucibles filled with the mixed materials are placed into the crucible grooves 42 one by one, the upper box body 3 is combined, the upper box body 3 is closed through the locking device 6, then the air bag 33 is inflated, the motor of the power part 8 is started, the lower box body 4 and the upper box body 3 start to rotate (including forward rotation, reverse rotation, forward rotation and cover finding points), and then the mixed materials in the crucibles and the samples can be fully mixed, and the purpose of uniform mixing is achieved.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A closed automatic stirrer for fire test, comprising:

a bracket (1);

the lower box body (4) rotates relative to the bracket (1) through a first rotating shaft (21) and a second rotating shaft (22) which are fixed at two sides, one side of the lower box body (4) is hinged with the upper box body (3) through a hinge (5), and the other side of the lower box body is connected with the upper box body through a locking device (6); the method is characterized in that:

the upper box body (3) comprises: the crucible comprises an elastic layer (31) for sealing an opening of the crucible, a hard supporting plate (32) for fixing the elastic layer (31), an air bag (33) which can be inflated and deflated and is provided with a valve, a bottom surface contact with the upper box body (3) and an elastic limiting device for controlling the approaching or separating of the supporting plate (32) relative to the inner bottom surface of the upper box body (3) within a limited distance; the elastic limiting device comprises: a guide slide bar (34) which passes through the top cover of the upper box body (3) and one end of which is vertically fixed with the supporting plate (32), wherein the free end of the guide slide bar (34) is fixed with a limiting block (36) after passing through a spring (35);

a crucible groove (42) for placing a crucible is arranged in the lower box body (4).

2. The closed automatic stirrer for fire test according to claim 1, wherein: the first rotating shaft (21) is of a tubular structure; the inflation and deflation positions of the air bags (33) are connected with air pipes, the air pipes penetrate through holes (211) in the pipe wall of the first rotating shaft (21) and then are connected with pneumatic rotary joints (7) arranged at the free ends of the first rotating shaft (21), and the pneumatic rotary joints (7) are connected with an air source through the air pipes.

3. A closed automatic stirrer for fire test according to claim 1 or 2, characterized in that: after the second rotating shaft (22) or the first rotating shaft (21) is driven by the power part (8), the lower box body (4) rotates relative to the bracket (1).

4. A closed automatic stirrer for fire test according to claim 3, wherein: the power part (8) is a servo motor.

5. The closed automatic stirrer for fire test according to claim 1, wherein: the front of the upper box body (3) is provided with a hollowed-out observation window (38).

6. A closed automatic stirrer for fire test according to claim 1 or 5, characterized in that: the upper edge of the position, which is anastomosed with the lower box body (4), of the upper box body (3) is provided with a concave installation gap (37).

7. The closed automatic stirrer for fire test according to claim 1, wherein: an inner base (41) made of elastic materials is arranged in the lower box body (4), and a plurality of crucible grooves (42) are formed in the inner base (41); the bottom of the crucible groove (42) is uniformly provided with annular convex correction blocks (43) with consistent heights, and the correction blocks (43) are spaced from the root of the crucible groove (42).

8. The closed automatic stirring machine for fire test according to claim 7, wherein: the correction block (43) is a round convex ring with uniform height.

9. The closed automatic stirrer for fire test according to claim 1, wherein: the locking device (6) is structurally a carriage hasp.