Manual closing device for light source of infrared spectrophotometer

Abstract

The utility model relates to a manual closing device for a light source of an infrared spectrophotometer, which is characterized by comprising a mounting bottom plate, a light source chamber, a mounting frame, a light source, a reflecting mirror, a framing plate, a light path assembly, a light blocking mechanism and a sample chamber, a reflective mirror is installed at the position, beside the light source, in the light source chamber, a separation frame plate is arranged on the side, adjacent to the light source chamber, of the installation bottom plate, a light path assembly is installed in the separation frame plate, and a light hole is formed in the separation frame plate. A light blocking mechanism is arranged at the position, located at the light transmitting hole formed in the separation frame plate, of the mounting bottom plate, and a sample chamber is arranged on the side, adjacent to the separation frame plate, of the mounting bottom plate, the light source does not need to be turned off repeatedly, the detection efficiency is improved, and the service life of the light source is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of spectrophotometer equipment, in particular to a manual closing device for the light source of an infrared spectrophotometer. Background Art

[0002] Infrared spectrophotometer is an instrument used to detect the infrared spectrum of substances. It is mainly composed of light source, sample chamber, spectrophotometer, detector and other components. The light source of infrared spectrophotometer is mainly composed of light source, filter and reflector. Among them, the light source usually uses quartz or tungsten lamp. The wavelength range of infrared light generated by the light source is 2.5-25μm. Different light sources have different infrared light wavelength ranges, so when choosing a lamp, it is necessary to choose according to the wavelength range of the substance to be detected. The function of the filter is to filter out the excess light emitted by the light source, leaving only the infrared light corresponding to the absorption spectrum of the detected substance. The reflector is mainly used for light collection and reflection.

[0003] The light emitted by the light source is irradiated from the light emitting window of the sample chamber through the filter and the reflector, and is received by the light receiving window on the other side of the sample chamber. When there is no test sample in the sample chamber, the spectrum of the light received by the receiving window is consistent with the spectrum of the emitted light and is continuous. When the test sample is placed, the sample will absorb a certain part of the wavelength light, and the spectrum received by the receiving window is no longer continuous, so the composition and content of the sample are calculated. During the use of the spectrophotometer, the sample position needs to be adjusted for each sample tested. At this time, the light source needs to be turned off, and the light source needs to be restarted when the sample is adjusted to the corresponding test position. However, when multiple samples are to be tested at one time, the light source needs to be repeatedly turned off and started many times, which not only affects the service life of the light source, but also requires a certain amount of time to warm up after each turn on to reach a stable state. Repeated switching on and off of the light source increases the detection time and reduces the detection efficiency. For this reason, a manual shutdown device for the light source of an infrared spectrophotometer is designed to solve the above problems. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a manual closing device for the light source of an infrared spectrophotometer, which is characterized by comprising a mounting base plate, a light source chamber, a mounting frame, a light source, a reflector, a partition frame plate, an optical path component, a light blocking mechanism, and a sample chamber.

[0005] The mounting base plate is provided with a screw-fixed mounting frame in the light source room, the mounting frame is provided with a light source, a reflector is provided in the light source room at a position beside the light source, a partition frame is provided on the mounting base plate adjacent to the light source room, an optical path component is provided in the partition frame, a light-transmitting hole is provided on the partition frame, a light-blocking mechanism is provided on the mounting base plate at the position of the light-transmitting hole provided on the partition frame, a sample chamber is provided on the mounting base plate at the adjacent side of the partition frame, a light emitting window is provided on the sample chamber on a side adjacent to the partition frame, and a light receiving window corresponding to the position of the light emitting window is provided on the other side of the sample chamber,

[0006] The light blocking assembly is composed of an adjusting button, a connecting shaft, a mounting seat, a fixing plate, a bidirectional screw, a moving block and a light blocking plate. The two ends of the mounting seat are respectively connected to the fixing plates, and the fixing plate is fixedly mounted on the mounting base plate by screws. A bidirectional screw is installed in a moving groove arranged on the mounting seat through a bearing, one end of the bidirectional screw is connected to the adjusting button through a connecting shaft, and the two sides of the bidirectional screw are respectively threadedly connected to the moving block, and the light blocking plate is installed on the moving block.

[0007] The light blocking plate is arranged in a "concave" structure.

[0008] The mounting base plate is provided with a mounting body shell, and the light source chamber, the optical path component and the sample chamber are all located in the body shell.

[0009] Specifically, the light source chamber is provided with a light through hole, and the light emitted by the light source is reflected from the light through hole to the optical path component through a reflector for processing, and finally enters the sample chamber from the light through hole of the partition frame plate.

[0010] Specifically, the light-transmitting hole arranged on the partition frame plate corresponds to the position of the light-emitting window arranged on the sample chamber.

[0011] Specifically, a light receiving and processing chamber is arranged on the mounting base plate at a position adjacent to the sample chamber, and a circuit board assembly is arranged on the mounting base plate. The circuit board assembly is used to control the operation of the spectrophotometer device and perform data processing and calculation.

[0012] Specifically, the optical path component is composed of various lenses for projecting, collecting and reflecting light, as well as a color wheel, a filter, etc. for processing light. This is the prior art of infrared spectrophotometer, so it will not be described in detail in this application.

[0013] Beneficial effects of the utility model:

[0014] The utility model sets a light blocking mechanism at the position of the light transmission hole in the optical path component, and the light emitted by the light source is sent to the sample chamber from the light transmission hole and the light emitting window of the sample chamber after being processed by the optical path. When multiple samples are detected at one time, the light source of the spectrophotometer is turned on. After the detection of the first sample is completed, the staff needs to adjust the sample position so that the next sample is located at the detection point. At this time, the operator first turns the adjustment knob to control the rotation of the two-way screw rod, controls the relative movement of the two light blocking plates to block the two light transmission holes, and blocks the light source projected to the sample chamber. Then the staff adjusts the sample position, and after adjusting the position, reverses the adjustment knob to control the light blocking plate to move away, and the unblocked light is projected again for experiment. When multiple samples are detected at one time, it is realized that there is no need to repeatedly turn off the light source, which not only improves the detection efficiency but also extends the service life of the light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a manual closing device for an infrared spectrophotometer light source according to the utility model;

[0016] Figure 2 It is a top view schematic diagram of the internal structure of a manual closing device for a light source of an infrared spectrophotometer according to the utility model after the body shell is removed;

[0017] Figure 3 It is a side view schematic diagram of the internal structure of a manual closing device for a light source of an infrared spectrophotometer according to the utility model after the body shell is removed;

[0018] Figure 4 It is a schematic diagram of the partial structure of the light blocking mechanism of a manual closing device for the light source of an infrared spectrophotometer according to the utility model;

[0019] As shown in the figure: 1. Base plate, 2. Body shell, 3. Light source chamber, 30. Mounting frame, 31. Reflector, 32. Light source, 33. Light hole, 4. Partition frame plate, 41. Light path assembly, 42. Light hole, 5. Sample chamber, 51. Light emitting window, 52. Light receiving window, 6. Light receiving processing chamber, 7. Circuit board assembly, 80. Mounting seat, 81. Adjustment button, 82. Connecting shaft, 83. Bidirectional screw, 84. Moving block, 85. Light shielding plate, 86. Fixed plate. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Example 1

[0024] like Figure 1 , the mounting base plate 1 is provided with a mounting body shell 2, such as Figure 2 , remove the body shell 2 to see the internal structure, the mounting frame 30 is fixed with screws in the light source chamber 3 installed on the mounting base plate 1, the mounting frame 30 is equipped with a light source 32, and a mounting reflector 31 is arranged at the side of the light source 32, a partition frame plate 4 is arranged on the mounting base plate 1 adjacent to the light source chamber 3, an optical path component 41 is arranged in the partition frame plate 4, and a light-transmitting hole 42 is arranged on the partition frame plate 4, and a light-blocking mechanism is arranged on the mounting base plate 1 at the position of the light-transmitting hole 42 arranged on the partition frame plate 4, and the light-blocking mechanism The mounting seat 80 is mounted on the mounting base plate 1 through a fixing plate 86 and screws. A bidirectional screw rod 83 is mounted in a moving groove arranged on the mounting seat 80 through a bearing, and the threads arranged at both ends of the bidirectional screw rod 83 are in opposite directions. One end of the bidirectional screw rod 83 is connected to a connecting shaft 82, and the connecting shaft 82 passes through the body shell 2 and extends out to be connected to the adjusting button 81. The two sides of the bidirectional screw rod 83 are respectively threadedly connected to a moving block 84, and a light shielding plate 85 is installed on the moving block 84. The light shielding plate 5 is set to a "concave" structure.

[0025] A sample chamber 5 is installed on the installation base plate 1 adjacent to the partition frame plate 4. A light emitting window 51 is provided on one side of the sample chamber 5 adjacent to the partition frame plate 4, and a light receiving window 52 corresponding to the position of the light emitting window 51 is provided on the other side. The light transmission hole 42 provided on the partition frame plate 4 corresponds to the position of the light emitting window 51 provided on the sample chamber 5.

[0026] The light source chamber 3 is provided with a light hole 33. The light emitted by the light source 32 is reflected from the light hole 33 by the reflector 31 to the optical path component 41 installed in the partition frame plate 4 for processing, and finally enters the sample chamber 5 from the light hole 42 of the partition frame plate 4.

[0027] A light receiving processing chamber 6 is arranged on the mounting base plate 1 at a position adjacent to the sample chamber 5, and a circuit board assembly 7 is arranged on the mounting base plate 1. The circuit board assembly 7 is used to control the operation of the spectrophotometer device and perform data processing calculations.

[0028] It should be noted that the optical path component 41 is composed of various lenses for projecting, collecting and reflecting light, as well as a color wheel and filters for processing light. This is the existing technology of infrared spectrophotometer, so it will not be described in detail in this application.

[0029] Example 2

[0030] When using the infrared spectrophotometer to detect sample components, the light source 32 is activated by the operation button of the display control panel arranged on the body shell 2. The light emitted by the light source 32 is reflected from the light hole 33 by the reflector 31 to the optical path component 41 installed in the partition frame plate 4 for processing, and finally projected into the sample chamber 5 from the light hole 42 of the partition frame plate 4 and the light emitting window 51 of the sample chamber 5 to detect the sample placed in the sample chamber 5.

[0031] When testing multiple samples at a time, first place the first sample in the sample chamber 5, then turn on the light source 32 of the spectrophotometer for preheating, wait for the light to reach a stable state, and then after the first sample is tested, the operator first turns the adjustment knob 81 to control the rotation of the bidirectional screw rod 83, controls the relative movement of the two light shielding plates 85 to block the two light-transmitting holes 42 on the partition frame plate 4, and at this time blocks the light source projected into the sample chamber 5. At this time, blocking the light from the light source 32 from projecting into the sample chamber 5 is equivalent to turning off the light source 32.

[0032] Then the staff adjusts the sample position so that the next sample is located at the detection point. After the position is adjusted, the reverse adjustment knob 81 is used to control the light blocking plate 85 to move away and no longer block the light-transmitting hole 42, which is equivalent to turning on the light source 32. The unblocked light is projected into the sample chamber 5 again to conduct experiments on the sample. Therefore, when detecting multiple samples at a time, there is no need to repeatedly turn off the light source 32, which not only improves the detection efficiency but also extends the service life of the light source 32.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The various components mentioned in the utility model are common technologies in the existing field. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A manual shut-off device for an infrared spectrophotometer light source, characterized in that It includes a mounting base plate, a light source chamber, a mounting frame, a light source, a reflector, a partition frame plate, an optical path component, a light blocking mechanism, and a sample chamber. The mounting base plate is provided with a screw-fixed mounting frame in the light source room, the mounting frame is provided with a light source, a reflector is arranged at a position beside the light source in the light source room, a partition frame plate is arranged on the mounting base plate adjacent to the side of the light source room, an optical path component is arranged in the partition frame plate, a light-transmitting hole is arranged on the partition frame plate, a light-blocking mechanism is arranged on the mounting base plate at the position of the light-transmitting hole arranged on the partition frame plate, a sample chamber is arranged on the mounting base plate at the adjacent side of the partition frame plate, a light emitting window is arranged on the sample chamber on the side adjacent to the partition frame plate, and a light receiving window corresponding to the position of the light emitting window is arranged on the other side of the sample chamber.

2. A manual shut-off device for an infrared spectrophotometer light source according to claim 1, characterized in that The light blocking mechanism consists of an adjusting button, a connecting shaft, a mounting seat, a fixed plate, a bidirectional screw, a movable block and a light blocking plate. The two ends of the mounting seat are respectively connected to the fixed plates, and the fixed plate is fixedly mounted on the mounting base by screws. The bidirectional screw is installed in the movable groove arranged on the mounting seat through a bearing, one end of the bidirectional screw is connected to the adjusting button through a connecting shaft, and the two sides of the bidirectional screw are respectively threadedly connected to the movable blocks, and the light blocking plate is installed on the movable block.

3. A manual shut-off device for an infrared spectrophotometer light source according to claim 2, characterized in that The light blocking plate is arranged in a "concave" structure.

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