Balance device

Abstract

The utility model relates to a balance device. The balance device comprises a balance main body, a balance tray, a sample supporting rod and a separation mechanism, the balance tray is arranged on the balance main body, the sample supporting rod is arranged above the balance tray, the separation mechanism is in driving connection with the sample supporting rod, and the sample supporting rod moves through the separation mechanism and is separated from or abutted against the balance tray. When a sample to be measured does not need to be weighed, the separation mechanism drives the sample supporting rod to ascend, so that the sample supporting rod is separated from the balance tray, and heat of the sample transferred to the balance tray and the balance main body is reduced; when a sample to be measured needs to be weighed, the separating mechanism drives the sample supporting rod to descend, the sample supporting rod is made to abut against the balance tray, and the sample to be measured is placed on the sample supporting rod to be weighed. Through the arrangement, long-term rigid contact heat conduction between the sample supporting rod and the balance tray is avoided, the weighing accuracy and stability are improved, and the service life is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of detection equipment, and in particular to a balance device. Background Art

[0002] With the development of industry and technology, it is necessary to weigh the mass of items in a specific environment online for counting, pricing, calculation, etc., and the balance is the core weighing unit. Often the accuracy, stability, and life of the balance are limited by environmental constraints.

[0003] The sample to be weighed by the balance needs to be processed in a high temperature, high humidity, and corrosive test environment, while the use environment of the balance requires room temperature, non-high humidity, no corrosive gas, and no vibration. Therefore, the sample support rod of the balance is connected to the balance tray, the sample support rod is placed on the balance tray, and the balance tray is connected to the internal frame of the balance. The high temperature chamber of the sample will transfer heat to the balance body through the sample support rod, causing the temperature of the balance body to be too high, which will directly affect the accuracy and stability of the balance's weighing, and even affect the service life of the balance. Summary of the invention

[0004] Based on this, it is necessary to provide a balance device to address the problem that heat is transferred to the balance body through the sample support rod, affecting the accuracy and stability of the balance's weighing, and even affecting the service life of the balance.

[0005] The embodiment of the present application provides a balance device, comprising:

[0006] balance body;

[0007] A balance tray, the balance tray is arranged on the balance body;

[0008] A sample support rod, wherein the sample support rod is arranged above the balance tray;

[0009] A separation mechanism is drivingly connected to the sample support rod, and the sample support rod is moved by the separation mechanism to separate from or abut against the balance tray.

[0010] In one embodiment, the separation mechanism comprises:

[0011] A driving member is provided with a driving end, and the driving end is connected to the sample support rod to drive the sample support rod to rise and fall, and to separate from or abut against the balance tray.

[0012] In one embodiment, the separation mechanism further comprises:

[0013] A support guide plate is provided with a guide hole for the sample support rod to pass through.

[0014] In one embodiment, the sample support rod comprises a first positioning plate, the bottom of the first positioning plate is used to abut against the top of the support guide plate;

[0015] The driving end is connected to the supporting guide plate;

[0016] Wherein, after the driving member drives the sample support rod to rise through the driving end, the top of the support guide plate abuts against the bottom of the first positioning plate.

[0017] In one embodiment, the sample support rod further includes a first cone rod segment, the first cone rod segment is used to pass through the guide hole, and the first positioning plate is arranged above the first cone rod segment;

[0018] Wherein, after the driving member drives the sample support rod to rise via the driving end, the first cone rod section and the guide hole are aligned and positioned.

[0019] In one embodiment, the balance device further comprises:

[0020] A sample chamber, the sample chamber is used to place the sample to be tested, and a first opening is provided at the bottom of the sample chamber for the sample support rod to pass through;

[0021] A sealing mechanism, the sealing mechanism comprising a sealing block arranged on the outer wall of the sample chamber, the sealing block being provided with a second opening connected with the first opening, the second opening being for the sample holder rod to pass through the sealing block; the sealing block being provided with an air inlet channel connected with the second opening, the air inlet channel being used to introduce gas into the sample chamber through the first opening.

[0022] In one embodiment, the sample holder rod comprises a second cone rod section, the second cone rod section is used to pass through the first opening, a second positioning plate is provided below the second cone rod section, and the top of the second positioning plate is used to abut against the bottom of the sealing block to seal the second opening;

[0023] Wherein, after the driving member drives the sample support rod to rise through the driving end, the top of the second positioning plate abuts against the bottom of the sealing block, and the second positioning plate seals the second opening.

[0024] In one embodiment, the sample holder rod further includes a second cone rod section, the second cone rod section is used to pass through the second through opening, and the second positioning plate is disposed below the second cone rod section;

[0025] Wherein, after the driving member drives the sample support rod to rise through the driving end, the second cone rod section and the second through opening are aligned and positioned.

[0026] In one embodiment, a first heat-resistance layer is provided between the balance tray and the sample support rod.

[0027] In one embodiment, the sample holder rod comprises a sample holder rod lower section and a sample holder rod upper section, and a second heat-resistance layer is connected between the sample holder rod lower section and the sample holder rod upper section.

[0028] According to the balance device of the embodiment of the present application, when the sample to be measured does not need to be weighed, the separation mechanism drives the sample support rod to move, so that the sample support rod is separated from the balance tray, reducing the heat of the sample transferred to the balance tray and the balance body; when the sample to be measured needs to be weighed, the separation mechanism drives the sample support rod to move, so that the sample support rod and the balance tray abut, and the sample to be measured is placed on the sample support rod to carry out the weighing work. Through the above arrangement, the sample support rod and the balance tray are prevented from long-term rigid contact and heat conduction, and the accuracy, stability and life of the weighing are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a balance device according to an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the partial structure of a balance device according to an embodiment of the present application.

[0031] Figure 3 This is a schematic structural diagram of a balance device according to an embodiment of the present application in a state of weighing a sample to be measured.

[0032] Figure 4 This is a schematic structural diagram of a balance tray and a sample support rod in a balance device according to an embodiment of the present application.

[0033] Figure 5 This is a structural schematic diagram of a balance device in an embodiment of the present application in which the first heat-resistant protrusion is in a washer shape and is disposed on the top of the balance tray.

[0034] Figure 6 This is a structural schematic diagram of a balance device in an embodiment of the present application in which the first heat-resistant protrusion is in a washer shape and is disposed at the bottom of a sample support rod.

[0035] Figure 7 This is a structural schematic diagram of a balance device in an embodiment of the present application in which the first heat-resistant protrusion is cylindrical and is arranged on the top of the balance tray.

[0036] Figure 8 This is a structural schematic diagram of a balance device in an embodiment of the present application in which the first heat-resistant protrusion is cylindrical and is arranged on the top of the balance tray.

[0037] Fig. 9This is a structural schematic diagram of a balance device in an embodiment of the present application in which the first heat-resistant protrusion is in the shape of an arc segment cushion and is arranged on the top of the balance tray.

[0038] Fig.10 for Fig. 9 Schematic diagram of the structure when the first heat-resistant protrusion is in the shape of an arc segment cushion.

[0039] Fig.11 This is a structural schematic diagram of a balance device in an embodiment of the present application in which the first heat-resistant protrusion is in a linear pad shape and is disposed on the top of the balance tray.

[0040] Fig.12 for Fig.10 Schematic diagram of the structure when the first heat-resistant protrusion is in a linear pad shape.

[0041] Fig.13 This is a schematic structural diagram of another structure of the first heat-resistant protrusion in the balance device of one embodiment of the present application.

[0042] Fig.14 for Fig.13 Schematic diagram of the structure when the first heat-resistant protrusion is in the shape of a gasket.

[0043] Fig.15 for Fig.13 A schematic diagram of the structure in which the first heat-resistant protrusion is in the shape of a radial pad and is integrally formed with the sample support rod.

[0044] Reference numerals:

[0045] 1. Balance body; 11. Support plate; 12. Sealing cover;

[0046] 2. Balance tray; 21. First heat-resistance layer; 211. First heat-resistance protrusion;

[0047] 3. Sample support rod; 31. Lower section of sample support rod; 311. First positioning plate; 312. First cone rod section; 32. Upper section of sample support rod; 321. Second positioning plate; 322. Second cone rod section; 33. Second heat-resisting layer; 331. Second heat-resisting protrusion;

[0048] 4. Separation mechanism; 41. Driving member; 411. Driving end; 42. Support guide plate; 421. Guide hole;

[0049] 5. Sample chamber; 51. Sample to be tested; 52. First port;

[0050] 6. Sealing mechanism; 61. Sealing block; 611. Second opening; 612. Air intake passage; 6121. Air intake pipe. DETAILED DESCRIPTION

[0051] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0052] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0053] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0055] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0057] Online weighing of items requires counting, pricing, and calculation based on the mass in a specific environment, and the balance is the core weighing unit. Often, the accuracy, stability, and life of the balance are limited by environmental constraints.

[0058] At present, most of the online weighing equipment on the market, such as: total migration tester, thermal mass analyzer, ignition residue tester, ash analyzer, thermogravimetric analyzer, drying loss tester, gravimetric water vapor transmission rate tester, assembly line weighing equipment, etc., need to meet the following requirements and characteristics: 1. All need to be equipped with a balance; 2. The items to be weighed often need to be processed or tested in a high temperature environment (some are as high as 600℃ or above); 3. The weighing accuracy requirements are high (0.1mg or higher), the number of interval weighing times is large, and the sample is required to be in a harsh environment for a long time; 4. The test and processing of the sample will have a sample rack or dish; 5. The balance needs to maintain a certain level for a long time without vibration; 6. When weighing, the balance needs to be kept at room temperature.

[0059] The inventors of the present invention have noticed that the weighing of the sample on the balance needs to be processed in a high temperature, high humidity, and corrosive test environment, while the use environment of the balance requires room temperature, non-high humidity, no corrosive gas, and no vibration. Therefore, the sample support rod of the balance is connected to the balance tray, the sample support rod is placed on the balance tray, and the balance tray is connected to the internal frame of the balance. The high temperature chamber of the sample will transfer heat to the balance body through the sample support rod, resulting in an overly high temperature of the balance body, which will directly affect the accuracy and stability of the balance weighing, and even affect the service life of the balance.

[0060] Based on the above considerations, in order to solve the problem that heat will be transferred to the balance body through the sample support rod, affecting the weighing accuracy and stability of the balance, and even affecting the service life of the balance, the inventors have conducted in-depth research and designed a balance device that allows the sample support rod to be separated from the balance pan, thereby reducing the heat transfer of the sample to the balance pan and the balance body.

[0061] See also Figure 1 At least one embodiment of the present application proposes a balance device, which includes a balance body 1, a balance tray 2, a sample holder rod 3 and a separation mechanism 4. The balance tray 2 is arranged on the balance body 1, and the sample holder rod 3 is arranged above the balance tray 2. The separation mechanism 4 is driven and connected to the sample holder rod 3. The sample holder rod 3 is moved by the separation mechanism 4 to separate from or abut against the balance tray 2.

[0062] According to the balance device of the embodiment of the present application, when the sample 51 to be measured does not need to be weighed, the separation mechanism 4 drives the sample support rod 3 to move, so that the sample support rod 3 is separated from the balance tray 2, reducing the heat of the sample transferred to the balance tray 2 and the balance body 1; when the sample 51 to be measured needs to be weighed, the separation mechanism 4 drives the sample support rod 3 to move, so that the sample support rod 3 and the balance tray 2 abut, and the sample 51 to be measured is placed on the sample support rod 3, and the weighing work can be carried out. Through the above arrangement, the sample support rod 3 and the balance tray 2 are prevented from long-term rigid contact and heat conduction, and the accuracy, stability and life of the weighing are improved.

[0063] See also Figure 1 In some embodiments, the separation mechanism 4 includes a driving member 41, and the driving member 41 is provided with a driving end 411, and the driving end 411 is connected to the sample holder rod 3, driving the sample holder rod 3 to rise and fall, and separate from or abut against the balance pan 2. Specifically, the driving member 41 includes a vertically arranged driving cylinder or a driving hydraulic cylinder. That is, after the sample holder rod 3 is raised by the separation mechanism 4, the sample holder rod 3 is completely separated from the balance pan 2 to prevent long-term contact; after the sample holder rod 3 is lowered by the separation mechanism 4, the sample holder rod 3 abuts against the balance pan 2.

[0064] It is understandable that the separation mechanism 4 can be arranged to move in other directions and is not limited to the vertical lifting in the embodiment of the present application, as long as the separation of the sample support rod 3 and the balance tray 2 can be achieved.

[0065] In some embodiments, the balance body 1 is provided with a sealing cover 12 , which covers the balance tray 2 inside, thereby reducing the transfer of heat between the sample processing environment and the balance body 1 environment.

[0066] See also Figure 2, the lifting of the sample support rod 3 will cause the sample support rod 3 to deviate from the balance axis, and accurate weighing is difficult to ensure. In some embodiments, the separation mechanism 4 also includes a support guide plate 42, and a guide hole 421 is provided on the support guide plate 42 for the sample support rod 3 to pass through. The guide hole 421 guides and positions the sample support rod 3 when the sample support rod 3 is lifted or lowered. Specifically, the guide hole 421 is a circular guide hole 421.

[0067] In some embodiments, the sample holder rod 3 includes a first positioning plate 311, and the bottom of the first positioning plate 311 is used to abut against the top of the support guide plate 42. The driving end 411 is connected to the support guide plate 42. After the driving member 41 drives the sample holder rod 3 to rise through the driving end 411, the top of the support guide plate 42 abuts against the bottom of the first positioning plate 311.

[0068] Specifically, after the driving end 411 is connected to the supporting guide plate 42 , the supporting guide plate 42 can be driven to drive the first positioning plate 311 to move up and down, and the lifting and lowering drive of the sample support rod 3 can be realized through the control of the driving member 41 .

[0069] In some embodiments, the sample holder rod 3 further includes a first cone rod section 312, the first cone rod section 312 is used to pass through the guide hole 421, and the first positioning plate 311 is arranged above the first cone rod section 312. After the driving member 41 drives the sample holder rod 3 to rise through the driving end 411, the first cone rod section 312 and the guide hole 421 form a centering position. Specifically, the outer wall of the first cone rod section 312 is inclined, and its bottom diameter gradually decreases. When the first cone rod section 312 rises with the sample holder rod 3, the guide hole 421 cooperates with the outer wall of the first cone rod section 312 to form a centering position.

[0070] It can be understood that the matching shape between the first cone rod segment 312 and the guide hole 421 includes but is not limited to a conical closed loop circle, a conical circle segment, a conical multi-point shape, etc.

[0071] See also Figure 1 and Figure 2 In some embodiments, the balance device further includes a sample chamber 5, the sample chamber 5 is used to place a sample 51 to be tested, and a first opening 52 for the sample holder rod 3 to pass through is provided at the bottom of the sample chamber 5. The balance device further includes a sealing mechanism 6 for the sample chamber 5, the sealing mechanism 6 includes a sealing block 61 provided on the outer wall of the sample chamber 5, the sealing block 61 is provided with a second opening 611 communicating with the first opening 52, and the second opening 611 is provided for the sample holder rod 3 to pass through the sealing block 61. The sealing block 61 is provided with an air inlet channel 612 communicating with the second opening 611, and the air inlet channel 612 is used to introduce gas into the sample chamber 5 through the first opening 52. Specifically, the air inlet channel 612 is connected to an air inlet pipe 6121.

[0072] Through the above arrangement, the sample chamber 5 can provide the sample processing environment space required by the sample 51 to be tested. A lifting assembly that can lift the sample 51 to be tested is arranged in the sample chamber 5. The first opening 52 is for the sample support rod 3 to pass through. In order to prevent the high-temperature heat from flowing out from the first opening 52 and affecting the nearby balance tray 2 and balance body 1, a sealing mechanism 6 is arranged. When the separation mechanism 4 lifts the sample support rod 3, the sealing block 61 in the sealing mechanism 6 makes the second positioning plate 321 on the sample support rod 3 seal the second opening 611, thereby achieving the sealing of the sample chamber 5 and preventing the heat in the sample chamber 5 from leaking. The sealing mechanism 6 also sets the air inlet channel 612, and by passing gas into the air inlet channel 612, the gas enters the second opening 611 from the air inlet channel 612, then enters the first opening 52 from the second opening 611, and then enters the sample chamber 5 from the first opening 52, so that an air barrier is formed between the sample processing environment and the balance body 1 environment, forming a flexible seal.

[0073] See also Figure 2 In some embodiments, the sample holder rod 3 includes a second cone rod section 322, and the second cone rod section 322 is used to pass through the first opening 52. A second positioning plate 321 is provided below the second cone rod section 322, and the top of the second positioning plate 321 is used to abut against the bottom of the sealing block 61 to seal the second opening 611. After the driving member 41 drives the sample holder rod 3 to rise through the driving end 411, the top of the second positioning plate 321 abuts against the bottom of the sealing block 61, and the second positioning plate 321 seals the second opening 611. Specifically, the outer wall of the second cone rod section 322 is inclined, and the diameter of its top gradually decreases. When the second cone rod section 322 rises with the sample holder rod 3, the guide hole 421 cooperates with the outer wall of the second cone rod section 322 to form a centering position, thereby further improving the axis stability of the sample holder rod 3.

[0074] See also Figure 2 In some embodiments, the sample holder rod 3 further includes a second tapered rod section 322, which is used to pass through the second opening 611, and the second positioning plate 321 is disposed below the second tapered rod section 322. After the driving member 41 drives the sample holder rod 3 to rise via the driving end 411, the second tapered rod section 322 and the second opening 611 are aligned and positioned.

[0075] See also Figure 3 When the sample 51 does not need to be weighed, the separation mechanism 4 drives the sample support rod 3 to rise, so that the sample support rod 3 is separated from the balance tray 2, thereby reducing the heat of the sample transferred to the balance tray 2 and the balance body 1.

[0076] It can be understood that the matching shape of the second cone rod segment 322 and the second opening 611 includes but is not limited to a conical closed loop, a conical circle segment, a conical multi-point shape, etc.

[0077] See also Figure 4 In some embodiments, a first heat-resisting layer 21 is provided between the balance tray 2 and the sample holder rod 3. Specifically, the first heat-resisting layer 21 can be provided at the top of the balance tray 2 to abut against the bottom of the sample holder rod 3; the first heat-resisting layer 21 can also be provided at the bottom of the sample holder rod 3 to abut against the top of the balance holder rod 4.

[0078] In some embodiments, the first heat-resisting layer 21 can be a structure with a small contact area, and the effect of reducing heat transfer is achieved by reducing the contact area. The first heat-resisting layer 21 is set to make the contact area between the sample support rod 3 and the balance tray 2 as small as possible, including but not limited to point type, line connection type, ring type, arc type, etc.

[0079] Specifically, in some embodiments, the first heat-resisting layer 21 may include a plurality of first heat-resisting protrusions 211 disposed on the balance tray 2. The small-area contact structure is realized by the plurality of first heat-resisting protrusions 211.

[0080] It is understandable that the first heat-resistant protrusion 211 can be in various shapes, as long as a small area of ​​contact can be achieved between the two contact surfaces of the sample support rod 3 and the balance tray 2. The first heat-resistant protrusion 211 can be made of a high heat-resistant material to increase thermal resistance, reduce heat conduction to the balance body 1, and protect the balance body 1.

[0081] See also Figure 4 In some embodiments, the first heat-resisting protrusion 211 can be set to be conical, and its bottom diameter is larger than its top diameter, so that the first heat-resisting protrusion 211 has a smaller contact area when abutting against the sample holder rod 3.

[0082] See also Figure 5 and Figure 6 In some embodiments, the first heat-resistant protrusion 211 can be set to be a washer-shaped and have a hollow structure and an annular thin-walled structure. The washer-shaped first heat-resistant protrusion 211 can be set on the top of the balance tray 2 to abut against the bottom of the sample holder rod 3; the first heat-resistant protrusion 211 can also be set at the bottom of the sample holder rod 3 to abut against the top of the balance holder rod 4.

[0083] See also Figure 7 and Figure 8 In some embodiments, the first heat-resistant protrusion 211 can be set in a thin cylindrical shape. The cylindrical first heat-resistant protrusion 211 can be set on the top of the balance tray 2 to abut against the bottom of the sample holder rod 3; the first heat-resistant protrusion 211 can also be set at the bottom of the sample holder rod 3 to abut against the top of the balance holder rod 4.

[0084] See also Fig. 9 and Fig.10In some embodiments, the first heat-resistant protrusion 211 can be set to an arc segment pad shape. The arc segment pad-shaped first heat-resistant protrusion 211 can be set at the top edge of the balance tray 2 to abut against the bottom of the sample holder rod 3. It can be understood that the first heat-resistant protrusion 211 can also be set at the bottom edge of the sample holder rod 3 to abut against the top of the balance holder rod 4.

[0085] See also Fig.11 and Fig.12 In some embodiments, the first heat-resistant protrusion 211 can be arranged in a linear pad shape. The linear pad-shaped first heat-resistant protrusion 211 can be arranged in an array at intervals on the top of the balance tray 2 to abut against the bottom of the sample holder rod 3. It is understood that the first heat-resistant protrusion 211 can also be arranged at the bottom of the sample holder rod 3 to abut against the top of the balance holder rod 4.

[0086] See also Fig.13 , Fig.14 and Fig.15 In some embodiments, the first heat-resisting layer 21 can be divided into two parts, and the first heat-resisting protrusion 211 on one part of the first heat-resisting layer 21 can be set to be a washer shape, and has a hollow structure and an annular thin-walled structure, which is fixedly arranged on the top of the balance tray 2. The first heat-resisting protrusion 211 on the other part of the first heat-resisting layer 21 can be set to be a linear pad shape, and the linear pad-shaped first heat-resisting protrusion 211 is radially arranged at the center of the bottom of the sample holder rod and extends to the edge of the sample holder rod 3, and can also be integrally formed with the sample holder rod 2.

[0087] It is understandable that the first heat-resistant protrusion 211 includes but is not limited to the above-mentioned structural shape, as long as a small-area contact between the two contact surfaces of the sample support rod 3 and the balance tray 2 can be achieved, and no further details will be given.

[0088] In some embodiments, the sample holder rod 3 includes a sample holder rod lower section 31 and a sample holder rod upper section 32 , and a second heat-resisting layer 33 is connected between the sample holder rod lower section 31 and the sample holder rod upper section 32 .

[0089] It can be understood that the sample holder rod 3 can be segmented, and the connection between the segments is a small area contact including but not limited to point type, line connection type, circular ring type, arc type, etc.

[0090] In some embodiments, the second heat-resisting layer 33 may adopt a structure with a small contact area, and the effect of reducing heat transfer is achieved by reducing the contact area. The second heat-resisting layer 33 may include a plurality of second heat-resisting protrusions 331, the bottom end of the second heat-resisting protrusions 331 is connected to the top of the lower section 31 of the sample holder rod, and the top end of the second heat-resisting protrusions 331 is connected to the bottom of the upper section 32 of the sample holder rod. The small contact area between the lower section 31 of the sample holder rod and the upper section 32 of the sample holder rod is achieved by the second heat-resisting protrusions 331.

[0091] In some embodiments, see Figure 4 The second heat-resistance protrusion 331 can be set to a cone shape, and its bottom diameter is larger than its top diameter. This makes the second heat-resistance protrusion 331 have a smaller contact area when connected with the upper section 32 of the sample holder rod. The second heat-resistance protrusion 331 can be made of a high heat-resistance material to increase thermal resistance, reduce heat conduction from the upper section 32 of the sample holder rod to the lower section 31 of the sample holder rod, and further reduce heat transfer downward.

[0092] Understandably, see Figures 5 to 13 The shape structure of the second heat-resistant protrusion 331 can be the same as or similar to the shape structure of the first heat-resistant protrusion 211 in the above embodiment, such as a gasket shape, a thin cylindrical shape, an arc-segment pad shape, a linear pad shape, etc., which will not be repeated here.

[0093] It is understandable that the sample support rod 3 itself can be made of high heat resistance and high temperature resistant material to further increase the thermal resistance.

[0094] When the balance device in the embodiment of the present application is used, it includes the following implementation steps:

[0095] When the measured sample 51 does not need to be weighed, the driving member 41 controls the support guide plate 42 to rise, and the support guide plate 42 is positioned through the guide hole 421 and the inverted cone center of the side of the first cone rod section 312 on the lower section of the sample support rod 31, and the lower section of the sample support rod 31 is dragged up together, and the lower section of the sample support rod 31 is out of contact with the balance tray 2, and the cone on the lower section of the sample support rod 31 forms a center positioning with the second opening 611 on the sealing block 61 in the sealing mechanism 6. After lifting, the lower section of the sample support rod 31 and the sealing block 61 are tightly fitted with a plane, and at the same time, the air inlet channel 612 of the sealing mechanism 6 is introduced into the air, forming an air barrier between the sample processing environment and the balance body 1 environment, forming a flexible seal, and protecting the balance body 1;

[0096] When the sample 51 to be measured is being weighed, the driving member 41 controls the support guide plate 42 to descend, and the lower section 31 of the sample support rod will continue to descend along with the support guide plate 42 until the lower part of the sample support rod lower section 31 descends to the first heat-resistant layer 21 on the upper part of the balance tray 2, and continues to descend until it is detached. At this time, after the balance is reset to zero, the sample 51 to be measured descends onto the sample support rod 3 for weighing, and the weighing is terminated when the weighing structure is stable. At the same time, gas is introduced into the air inlet channel 612 of the sealing mechanism 6 to form an air barrier between the sample processing environment and the balance body 1 environment, forming a flexible seal to protect the balance body 1.

[0097] The balance device in the embodiment of the present application can increase the thermal resistance of the sample support rod 3, reduce the high temperature heat conduction to the balance, and protect the balance at the same time. The lifting and lowering of the sample support rod 3 can accurately locate the central axis to prevent the lifting and lowering from causing the sample support rod 3 to be offset and unable to achieve constant weight. For items to be weighed in a high temperature and high humidity environment, there is no need to wait for the ambient temperature of the sample to drop before weighing, which can meet the weighing of high or low temperature states, improve efficiency, and reduce the limitation of the weighing of the balance by the test environment. The long-term connection between the sample support rod 3 and the balance body 1 and the heat conduction to the inside of the balance are reduced, reducing damage to the balance.

[0098] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0099] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A balance device, characterized in that: include: balance body; A balance tray, the balance tray is arranged on the balance body; A sample support rod, wherein the sample support rod is arranged above the balance tray; A separation mechanism is drivingly connected to the sample support rod, and the sample support rod is moved by the separation mechanism to separate from or abut against the balance tray.

2. The balance device according to claim 1, characterized in that: The separation mechanism comprises: A driving member is provided with a driving end, and the driving end is connected to the sample support rod to drive the sample support rod to rise and fall, and to separate from or abut against the balance tray.

3. The balance device according to claim 2, characterized in that: The separation mechanism also includes: A support guide plate is provided with a guide hole for the sample support rod to pass through.

4. The balance device according to claim 3, characterized in that: The sample support rod comprises a first positioning plate, the bottom of which is used to abut against the top of the supporting guide plate; The driving end is connected to the supporting guide plate; Wherein, after the driving member drives the sample support rod to rise through the driving end, the top of the support guide plate abuts against the bottom of the first positioning plate.

5. The balance device according to claim 4, characterized in that: The sample support rod further includes a first cone rod section, the first cone rod section is used to pass through the guide hole, and the first positioning plate is arranged above the first cone rod section; Wherein, after the driving member drives the sample support rod to rise through the driving end, the first cone rod section and the guide hole are aligned and positioned.

6. The balance device according to claim 2, characterized in that: The balance device also includes: A sample chamber, the sample chamber is used to place the sample to be tested, and a first opening is provided at the bottom of the sample chamber for the sample support rod to pass through; A sealing mechanism, the sealing mechanism comprising a sealing block arranged on the outer wall of the sample chamber, the sealing block being provided with a second opening connected with the first opening, the second opening being for the sample holder rod to pass through the sealing block; the sealing block being provided with an air inlet channel connected with the second opening, the air inlet channel being used to introduce gas into the sample chamber through the first opening.

7. The balance device according to claim 6, characterized in that The sample holder rod comprises a second cone rod section, the second cone rod section is used to pass through the first opening, a second positioning plate is arranged below the second cone rod section, and the top of the second positioning plate is used to abut against the bottom of the sealing block to seal the second opening; Wherein, after the driving member drives the sample support rod to rise through the driving end, the top of the second positioning plate abuts against the bottom of the sealing block, and the second positioning plate seals the second opening.

8. The balance device according to claim 7, characterized in that The sample support rod further includes a second cone rod section, the second cone rod section is used to pass through the second through opening, and the second positioning plate is arranged below the second cone rod section; Wherein, after the driving member drives the sample support rod to rise through the driving end, the second cone rod section and the second through opening are aligned and positioned.

9. The balance device according to claim 1, characterized in that: A first heat-resistance layer is arranged between the balance tray and the sample support rod.

10. The balance device according to claim 1, characterized in that: The sample support rod comprises a sample support rod lower section and a sample support rod upper section, and a second heat-resistance layer is connected between the sample support rod lower section and the sample support rod upper section.

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