Low-error weighing device and reaction kettle

Abstract

This invention discloses a low-error weighing device, comprising an upper push plate, a lower push plate, and a platform. The platform is fixed to the body of a reaction vessel. The upper and lower push plates are spaced apart vertically, and a weighing sensor is disposed between the upper and lower push plates. A platform shaft is connected below the lower push plate, and a weighing support rod is connected above the upper push plate. When the inner container of the reaction vessel, containing material, moves downward and contacts the weighing support rod, the platform shaft abuts against the platform, and the weighing support rod supports the inner container. Under the action of the reaction force, the weighing sensor measures the weight of the inner container and the material contained within it. This invention significantly reduces the number of irrelevant weighing objects, contributing to improved accuracy in obtaining material weights and effectively solving the drawback of large weighing errors in traditional reaction vessel weighing devices.

Description

Technical Field

[0001] This invention relates to a weighing device, and more particularly to a low-error weighing device and a reaction vessel. Background Technology

[0002] Before stirring materials in a laboratory reactor, the materials need to be weighed using a weighing device to obtain their weight. In existing laboratory reactors, materials are added inside the reactor vessel, which is equipped with a support structure on the outside. Additionally, to meet heating requirements, the reactor vessel also has a heating base. This means that when using a weighing sensor, the weight of the heating base and support, etc., is also weighed. The more unrelated weights there are, the less accurate the obtained material weight becomes, resulting in large weighing errors in traditional reactor weighing devices, which is detrimental to the precise addition of materials. Summary of the Invention

[0003] To address the shortcomings of the aforementioned technologies, this invention provides a low-error weighing device and a reaction vessel.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a low-error weighing device, including an upper push plate, a lower push plate and a platform, the platform being fixed to the body of the reaction vessel, the upper push plate and the lower push plate being distributed at intervals, and a weighing sensor for weighing being provided between the upper push plate and the lower push plate.

[0005] A platform shaft is connected below the lower push plate, and a weighing support rod is connected above the upper push plate. When the inner barrel of the reactor containing the material moves downward and contacts the weighing support rod, the platform shaft abuts against the platform panel, and the weighing support rod supports the inner barrel of the reactor. Under the action of the reaction force, the weighing sensor measures the weight of the inner barrel of the reactor and the material contained in the inner barrel.

[0006] Furthermore, the inner barrel of the reactor is covered by a barrel base, and a heating and cooling chassis is connected below the barrel base, with the inner barrel of the reactor resting on the heating and cooling chassis.

[0007] Furthermore, the barrel wall is provided with a vertical moving drive block for connecting the moving module.

[0008] Furthermore, a guide flange of the same diameter as the heating and cooling chassis is fixed on the heating and cooling chassis, and a bakelite spacer is provided along the inner ring wall of the guide flange, which is sandwiched between the heating and cooling chassis and the bucket seat.

[0009] Furthermore, the guide flange forms an inner barrel guide placement opening, through which the inner barrel of the reactor passes through the bakelite spacer and sits on the heating and cooling chassis via the inner barrel guide placement opening.

[0010] Furthermore, the weighing support rod passes upward through the heating and cooling base and protrudes from the surface of the heating and cooling base. The protruding part has a spherical top, and a limiting groove matching the spherical top is provided on the bottom wall of the inner barrel 1 of the reactor.

[0011] Furthermore, there are three weighing support rods, which are arranged in a triangular pattern on the upper push plate.

[0012] Furthermore, the weighing device also includes a protective cover.

[0013] Furthermore, a compression spring assembly is provided at the lower push plate. The compression spring assembly includes a guide shaft and a compression spring sleeved on the guide shaft. The guide shaft passes downward through the lower push plate and is connected to the outer cover through the shaft seat. The guide shaft extends upward and is connected to the heating and cooling chassis through the limiting shaft end. The compression spring assembly is limited between the lower push plate and the limiting shaft end.

[0014] A reaction vessel includes the aforementioned low-error weighing device.

[0015] This invention discloses a low-error weighing device. During weighing, the weighing support rod only supports the inner barrel of the reaction vessel containing the material. Then, the reaction force is used, and with the cooperation of the weighing sensor, the inner barrel of the reaction vessel and the material are weighed. The number of unrelated weighing objects such as the barrel base and heating base is greatly reduced, which helps to improve the accuracy of the obtained material weight and effectively solves the drawback of large weighing error in traditional reaction vessel weighing devices. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the low-error weighing device of the present invention.

[0017] Figure 2 This is an exploded structural diagram of the low-error weighing device of the present invention.

[0018] Figure 3 for Figure 1 Cross-sectional structural diagram.

[0019] In the diagram: 1. Inner tank of the reactor; 2. Tank base; 3. Guide flange; 3a. Inner tank guide landing opening; 4. Heating and cooling base; 5. Platform panel; 6. Outer cover; 7. Up and down moving drive block; 8. Bakelite sleeve; 9. Weighing support rod; 10. Compression spring assembly; 10a. Guide shaft; 10b. Compression spring; 11. Platform shaft; 12. Upper push plate; 13. Weighing sensor; 14. Lower push plate; 15. Shaft seat. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] This invention discloses a low-error weighing device for use in laboratory reaction vessels to achieve weighing functions. (The following is a continuation of the previous paragraph.) Figure 2 and Figure 3 As shown, the low-error weighing device includes an upper push plate 12, a lower push plate 14, and a platform 5.

[0022] The platform 5 is fixed to the body of the reactor and is located at the bottom of the weighing device on the platform 5, so as to facilitate subsequent support of the weighing support rod 9. The upper push plate 12 and the lower push plate 14 are distributed at intervals, and a weighing sensor 13 for weighing is provided between the upper push plate 12 and the lower push plate 14.

[0023] Meanwhile, a platform shaft 11 is connected to the lower part of the lower push plate 14, and a weighing support rod 9 is connected to the upper part of the upper push plate 12. When the inner barrel 1 of the reactor containing the material moves downward and contacts the weighing support rod 9, the platform shaft 11 abuts against the platform panel 5, and the weighing support rod 9 supports the inner barrel 1 of the reactor. Under the action of the reaction force, the weighing sensor 13 measures the weight of the inner barrel 1 of the reactor and the weight of the material contained in the inner barrel 1 of the reactor.

[0024] A base 2 is provided outside the inner barrel 1 of the reactor. A gap is left between the base 2 and the inner barrel 1, or a guide sleeve is provided, allowing the inner barrel 1 to move smoothly upwards when the weighing support rod 8 supports it. A heating and cooling base 4 is connected below the base 2, and the inner barrel 1 rests on the heating and cooling base 4. Simultaneously, a vertical movement drive block 7 is provided on the wall of the base 2 for connecting a moving module. The vertical movement drive block 7 is connected to a linear module, allowing the base, inner barrel, heating and cooling base, and weighing device to move synchronously up and down under the action of the linear module.

[0025] In this embodiment, the weighing support rod 9 passes upward through the heating and cooling base 4 and protrudes from the surface of the base 4. The protruding part has a spherical tip, and a limiting groove matching the spherical tip is provided on the bottom wall of the inner barrel 1 of the reactor. The cooperation between the spherical tip and the limiting groove allows the weighing support rod 9 to more stably support the inner barrel 1 of the reactor. When the linear module drives the barrel base, inner barrel, heating and cooling base, and weighing device to move down to the weighing point, as... Figure 3 As shown, the platform shaft 11 abuts against the platform panel 5, thereby pushing the lower push plate 14, the weighing sensor 13, and the upper push plate 12 upwards. This causes the weighing support rod 9 to lift the inner container 1 of the reactor, which sits on the heating and cooling chassis 4. Under the action of the reaction force, the weighing sensor 13 measures the weight of the inner container 1 and the materials contained within it. Multiple platform shafts 11 can be installed for better pushing effect.

[0026] In this embodiment, three weighing support rods 9 are provided. The three weighing support rods are arranged in a triangle on the upper push plate 12. The three weighing support rods arranged in a triangle can more stably support the inner barrel 1 of the reaction vessel.

[0027] In this embodiment, the low-error weighing device also includes a protective outer cover 6. Additionally, a compression spring assembly 10 is provided at the lower push plate 14, such as... Figure 3 As shown, the compression spring assembly 10 includes a guide shaft 10a and a compression spring 10b sleeved on the guide shaft 10a. The guide shaft 10a passes downward through the push plate 14 and is connected to the outer cover 6 via the bearing seat 15. The guide shaft 10a extends upward and is connected to the heating and cooling chassis 4 via the limiting shaft end. The compression spring assembly 10 is limited between the push plate 14 and the limiting shaft end. Multiple sets of compression spring assemblies are also provided. The guide shaft 10a guides the movement of the push plate 14 and, in conjunction with the compression spring 10, ensures that the weighing device can be smoothly reset after the inner tank 1 of the reactor is raised along with the tank seat.

[0028] In this embodiment, the connection structure between the bucket base 2 and the heating and cooling plate 4 specifically includes: a guide flange 3 with the same diameter as the heating and cooling plate 4 is fixed on the heating and cooling plate 4, and a bakelite spacer 8 is provided along the inner ring wall of the guide flange 3. The bakelite spacer 8 is sandwiched between the heating and cooling plate 4 and the bucket base 2, and the heat insulation protection of the bucket base is achieved by setting the bakelite spacer 8.

[0029] In this embodiment, in order to enable the heating and cooling chassis 4 to be placed more accurately on the heating and cooling chassis 4, the guide flange 3 is formed with an inner barrel guide placement opening 3a. The inner barrel guide placement opening 3a has a chamfered structure. The inner barrel 1 of the reactor passes through the bakelite partition 8 and is placed on the heating and cooling chassis 4 through the inner barrel guide placement opening 3a.

[0030] In this embodiment, the heating and cooling base 4 has both heating and cooling functions compared to a traditional heating base. A downwardly recessed curved groove is formed on the surface of the heating and cooling base, and a liquid-cooled copper tube is laid in the curved groove. An installation hole is formed on the side wall of the heating and cooling base, and a heating rod is installed in the installation hole. When coolant is introduced into the liquid-cooled copper tube, the cooling function is realized. When the heating rod is turned on, the heating function is realized.

[0031] Therefore, for the low insertion error weighing device disclosed in this invention, such as Figures 1 to 3 As shown, when the linear module drives the barrel seat to move the heating and cooling chassis downwards, the inner barrel of the reactor, which sits on the heating and cooling chassis, moves downwards synchronously, and the weighing device also moves synchronously. When it moves to the weighing point, the platform shaft will abut against the platform panel, thereby pushing the lower push plate upwards. This causes the upper push plate to push the weighing support rod to lift the inner barrel of the reactor. The weighing structure works independently, while the barrel seat, heating and cooling chassis, and outer cover remain stationary. The weighing support rod only lifts the inner barrel of the reactor containing the material. Then, using the reaction force and with the cooperation of the weighing sensor, only the inner barrel of the reactor and the material are weighed. The number of irrelevant weighing objects is significantly reduced, which helps to improve the accuracy of the obtained material weight and effectively solves the drawback of large weighing errors in traditional reactor weighing devices.

[0032] The above embodiments are not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present invention are also within the protection scope of the present invention.

Claims

1. A low-error weighing device, characterized in that: The weighing device includes an upper push plate (12), a lower push plate (14) and a platform (5). The platform (5) is fixed to the body of the reactor. The upper push plate (12) and the lower push plate (14) are distributed at intervals. A weighing sensor (13) for weighing is provided between the upper push plate (12) and the lower push plate (14). A platform shaft (11) is connected below the lower push plate (14), and a weighing support rod (9) is connected above the upper push plate (12). When the inner barrel (1) of the reactor containing the material moves downward and contacts the weighing support rod (9), the platform shaft (11) abuts against the platform panel (5), and the weighing support rod (9) supports the inner barrel (1) of the reactor. Under the action of the reaction force, the weighing sensor (13) measures the weight of the inner barrel (1) of the reactor and the weight of the material contained in the inner barrel (1).

2. The low-error weighing device according to claim 1, characterized in that: The inner barrel (1) of the reactor is covered with a barrel seat (2), and a heating and cooling chassis (4) is connected below the barrel seat (2). The inner barrel (1) of the reactor sits on the heating and cooling chassis (4).

3. The low-error weighing device according to claim 2, characterized in that: The barrel base (2) is provided with a vertical moving drive block (7) for connecting the moving module.

4. The low-error weighing device according to claim 2, characterized in that: The heating and cooling chassis (4) is fixed with a guide flange (3) of the same diameter as the heating and cooling chassis (4). A bakelite spacer (8) is provided along the inner ring wall of the guide flange (3). The bakelite spacer (8) is sandwiched between the heating and cooling chassis (4) and the bucket seat (2).

5. The low-error weighing device according to claim 4, characterized in that: The guide flange (3) forms an inner barrel guide landing opening (3a), through which the inner barrel (1) of the reactor passes through the bakelite sleeve (8) and sits on the heating and cooling chassis (4) via the inner barrel guide landing opening (3a).

6. The low-error weighing device according to any one of claims 2-5, characterized in that: The weighing support rod (9) passes upward through the heating and cooling base (4) and protrudes from the surface of the heating and cooling base (4). The protruding part has a spherical top. A limiting groove matching the spherical top is provided on the bottom wall of the inner barrel (1) of the reactor.

7. The low-error weighing device according to claim 6, characterized in that: The weighing support rod (9) is provided with three rods, which are arranged in a triangular pattern on the upper push plate (12).

8. The low-error weighing device according to claim 7, characterized in that: The weighing device also includes a protective cover (6).

9. The low-error weighing device according to claim 8, characterized in that: A compression spring assembly (10) is provided at the lower push plate (14). The compression spring assembly (10) includes a guide shaft (10a) and a compression spring (10b) sleeved on the guide shaft (10a). The guide shaft (10a) passes downward through the lower push plate (14) and is connected to the outer cover (6) through the shaft seat (15). The guide shaft (10a) extends upward and is connected to the heating and cooling chassis (4) through the limiting shaft end. The compression spring assembly (10) is limited between the lower push plate (14) and the limiting shaft end.

10. A reaction vessel, characterized in that: Includes the low-error weighing device as described in any one of claims 1-9.

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