A novel evaporative light scattering detector

Abstract

A novel evaporative light scattering detector includes a detection chamber, a laser source, a light source absorption trap, a photoelectric sensor, and a sample switching stage. The laser source is connected to one side of the detection chamber, and the light source absorption trap is connected to the other side. A photoelectric sensor is located on the side of the detection chamber, with an acute angle between the photoelectric sensor and the light source absorption trap. A detection tube connection platform is located at the bottom of the detection chamber, and a sample switching stage is also located at the bottom of the detection chamber. A detection chamber connection tube is located on the side of the sample switching stage facing the detection chamber, and the end of the detection chamber connection tube is inserted into and fixed inside the detection tube connection platform. A first tube connection platform and a second tube connection platform are located on the other side of the sample switching stage, symmetrically arranged on the side surface of the sample switching stage. A switching slider is adapted to the sample switching stage and is connected to the sample switching stage.

Description

Technical Field

[0001] This utility model relates to the field of evaporative light scattering detection, and in particular to a novel evaporative light scattering detector. Background Technology

[0002] An existing patent (publication number: CN107132202A) proposes a novel evaporative light scattering detector, including a chassis with a detection door and an observation window. The chassis contains a nebulizing tube, a drift tube, and a detection chamber connected in sequence. The nebulizing tube is located at the observation window of the detection door in the chassis. However, this device, which states that "the chassis contains a nebulizing tube, a drift tube, and a detection chamber connected in sequence," only has one nebulizing tube. When this nebulizing tube is continuously nebulizing, it is impossible to place and prepare another set of samples, which affects the detection efficiency during batch detection. Summary of the Invention

[0003] This invention addresses the aforementioned shortcomings of existing technologies by providing a novel evaporative light scattering detector in which both the first and second nebulizers can atomize the sample during the evaporative light scattering detection process. While one nebulizer (either the first or second nebulizer) is working, the other nebulizer (either the first or second nebulizer) can perform sample placement and other preparatory work, thereby increasing the detection efficiency during batch testing.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A novel evaporative light scattering detector includes a detection chamber, a laser source, a light source absorption trap, a photoelectric sensor, and a sample switching stage. The laser source is connected to one side of the detection chamber, and the light source absorption trap is connected to the other side of the detection chamber. A photoelectric sensor is located on the side of the detection chamber, and the angle between the photoelectric sensor and the light source absorption trap is an acute angle. A detection tube connection platform is located at the bottom of the detection chamber, and a sample switching stage is provided at the bottom of the detection chamber. A detection chamber connection tube is located on the side of the sample switching stage facing the detection chamber, and the end of the detection chamber connection tube is inserted into the detection tube connection platform and fixed. A first tube connection platform and a second tube connection platform are located on the other side of the sample switching stage, and the first tube connection platform and the second tube connection platform are symmetrically arranged on the side surface of the sample switching stage.

[0006] The switching slider is adapted to the sample switching stage and is connected to the sample switching stage. The switching slider slides inside the sample switching stage. The switching slider has a first switching slot and a second switching slot, which are symmetrically arranged inside the switching slider. The sample switching stage has a cylinder connecting platform on the side perpendicular to the detection chamber connecting pipe. A switching drive cylinder is fixedly connected to the side of the cylinder connecting platform. The telescopic rod of the switching drive cylinder is fixedly connected to the switching slider. A first nebulizer and a second nebulizer are arranged on the side of the sample switching stage away from the detection chamber.

[0007] The first atomizer has a first atomizing tube at its bottom, which is inserted into and fixed inside the first tube connecting platform. The second atomizer has a second atomizing tube at its bottom, which is inserted into and fixed inside the second tube connecting platform. The bottom of the detection chamber has a discharge pipe, which is located on the side of the detection tube connecting platform.

[0008] The discharge pipe has a sealing ball mounting platform and a hollow support platform inside. The hollow support platform is located below the sealing ball mounting platform. The sealing ball mounting platform has a sealing ball connecting groove inside. The sealing ball connecting groove is adapted to the sealing ball and connects to the sealing ball.

[0009] The sealing ball is inserted into the sealing ball connecting groove, and the sealing ball is connected to the hollow support platform by a sealing spring. One end of the air extraction pipe is inserted into the discharge pipe and fixed, and the other end of the air extraction pipe is connected to the air extraction device.

[0010] Beneficial effects: 1. In the process of evaporative light scattering detection, both the No. 1 nebulizer and the No. 2 nebulizer can perform nebulization operations on the sample. When the No. 1 nebulizer or the No. 2 nebulizer on one side is working, the No. 2 nebulizer or the No. 1 nebulizer on the other side, which is not working, can perform preparation operations such as placing the sample, thereby increasing the detection efficiency during batch detection.

[0011] 2. The present invention allows for convenient switching of the feeding lines between the No. 1 and No. 2 atomizing tubes via a switching slider with a No. 1 and No. 2 switching slots. The No. 1 and No. 2 switching slots are independent and do not intersect, thus ensuring that the samples provided by the No. 1 and No. 2 atomizing tubes do not affect each other and guaranteeing the stability of sample detection.

[0012] 3. The sealing ball and the hollow support platform of this utility model are connected by a closed spring. When it is necessary to remove the sample inside the detection chamber, the suction device connected to the suction pipe is directly activated to extract the sample inside the detection chamber. When the suction device connected to the suction pipe is turned off, the sealing ball and the sealing ball connecting groove are automatically connected. No manual switching is required, making the use process more convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a novel evaporative light scattering detector according to the present invention.

[0014] Figure 2 This is a bottom-view schematic diagram of the novel evaporative light scattering detector described in this utility model.

[0015] Figure 3 This is a top cross-sectional view of the installation state of the switching slider described in this utility model.

[0016] Figure 4 This is a rear view of a novel evaporative light scattering detector according to the present invention.

[0017] Figure 5 The present utility model Figure 4 Enlarged view of a specific area. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0019] Example 1:

[0020] A novel evaporative light scattering detector includes a detection chamber 1, a laser source 2, a light source absorption trap 3, a photoelectric sensor 4, and a sample switching stage 5. The laser source 2 is connected to one side of the detection chamber 1, and the light source absorption trap 3 is connected to the other side of the detection chamber 1. The photoelectric sensor 4 is located on the side of the detection chamber 1, and the angle between the photoelectric sensor 4 and the light source absorption trap 3 is an acute angle. The bottom of the detection chamber 1 has a detection tube connection platform 12, and the sample switching stage 5 is located at the bottom of the detection chamber 1. The side of the sample switching stage 5 facing the detection chamber 1 has a detection chamber connection tube 6, and the end of the detection chamber connection tube 6 is inserted into the detection tube connection platform 12 and fixed. The other side of the sample switching stage 5 has a first tube connection platform 15 and a second tube connection platform 16, which are symmetrically arranged on the side surface of the sample switching stage 5.

[0021] Example 2:

[0022] The switching slider 17 described in this invention is adapted to the sample switching stage 5. The switching slider 17 is connected to the sample switching stage 5 and slides inside the sample switching stage 5. The switching slider 17 has a first switching slot 19 and a second switching slot 20 inside the switching slider 17. The first switching slot 19 and the second switching slot 20 are symmetrically arranged inside the switching slider 17. The sample switching stage 5 has a cylinder connecting platform 18 on the side perpendicular to the detection chamber connecting pipe 6. The cylinder connecting platform 18 is fixedly connected to the side of the switching drive cylinder 7. The telescopic rod of the switching drive cylinder 7 is fixedly connected to the switching slider 17. The sample switching stage 5 is provided with a first nebulizer 8 and a second nebulizer 9 on the side away from the detection chamber 1. During the evaporative light scattering detection process, both the first nebulizer 8 and the second nebulizer 9 can perform nebulization operations on the sample. When the first nebulizer 8 or the second nebulizer 9 on one side is working, the second nebulizer 9 or the first nebulizer 8 on the other side, which is not working, can perform preparation operations such as placing the sample, thereby increasing the detection efficiency during batch detection.

[0023] Example 3:

[0024] The first nebulizer 8 of this utility model has a first nebulizing tube 10 at its bottom. The first nebulizing tube 10 and the second nebulizing tube 11 can be conveniently switched through the first switching slot 19 and the second switching slot 20 of the switching slider 17. The first switching slot 19 and the second switching slot 20 are independent and do not intersect each other, so that the samples provided by the first nebulizing tube 10 and the second nebulizing tube 11 will not affect each other, ensuring the stability of sample detection. The first nebulizing tube 10 is inserted into the first tube connecting platform 15 and fixed. The second nebulizer 9 has a second nebulizing tube 11 at its bottom. The second nebulizing tube 11 is inserted into the second tube connecting platform 16 and fixed. The bottom of the detection chamber 1 has a discharge pipe 13, which is located on the side of the detection tube connecting platform 12.

[0025] Example 4:

[0026] The discharge pipe 13 of this utility model has a sealing ball mounting platform 21 and a hollow support platform 24 inside. The hollow support platform 24 is located below the sealing ball mounting platform 21. The sealing ball mounting platform 21 has a sealing ball connecting groove 22 inside. The sealing ball connecting groove 22 is adapted to the sealing ball 23 and connects the sealing ball 23. The sealing ball 23 and the hollow support platform 24 are connected by a sealing spring 25. When it is necessary to remove the sample inside the detection chamber 1, the suction device connected to the suction pipe 14 is directly activated to extract the sample inside the detection chamber 1. When the suction device connected to the suction pipe 14 is turned off, the sealing ball 23 and the sealing ball connecting groove 22 are automatically connected without manual switching, making the use process more convenient.

[0027] Example 5:

[0028] The sealing ball 23 of this utility model is inserted into the sealing ball connecting groove 22. The sealing ball 23 is connected to the hollow support platform 24 by a sealing spring 25. One end of the air extraction pipe 14 is inserted into the discharge pipe 13 and fixed. The other end of the air extraction pipe 14 is connected to the air extraction device.

[0029] Example 6:

[0030] Installation steps of this utility model: Connect the laser source 2, the light source absorption trap 3, and the photoelectric sensor 4 to the side of the detection chamber 1 respectively; insert the detection chamber connecting tube 6 of the sample switching stage 5 into the detection tube connecting stage 12 of the detection chamber 1; insert the switching slider 17 into the sample switching stage 5; fix the switching drive cylinder 7 to the side of the cylinder connecting stage 18 of the sample switching stage 5; fix the telescopic rod of the switching drive cylinder 7 to the switching slider 17; connect the first atomizer 8 to the first atomizer... The tube 10 is inserted into the first tube connection platform 15 of the sample switching platform 5. The second atomizing tube 11 of the second atomizer 9 is inserted into the second tube connection platform 16 of the sample switching platform 5. The sealing ball 23 is inserted into the sealing ball connection groove 22 of the detection chamber 1. The sealing ball 23 is connected to the hollow support platform 24 of the detection chamber 1 through the sealing spring 25. One end of the suction pipe 14 is inserted into the discharge pipe 13 of the detection chamber 1. The other end of the suction pipe 14 is connected to the suction device.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A novel evaporative light scattering detector, characterized in that... The system includes a detection chamber (1), a laser source (2), a light source absorption trap (3), a photoelectric sensor (4), and a sample switching platform (5). The laser source (2) is connected to one side of the detection chamber (1), and the light source absorption trap (3) is connected to the other side of the detection chamber (1). The photoelectric sensor (4) is located on the side of the detection chamber (1), and the angle between the photoelectric sensor (4) and the light source absorption trap (3) is an acute angle. The bottom of the detection chamber (1) has a detection tube connection platform (12), and the bottom of the detection chamber (1) has a sample switching platform (5). The side of the sample switching platform (5) facing the detection chamber (1) has a detection chamber connection tube (6), and the end of the detection chamber connection tube (6) is inserted into the detection tube connection platform (12) and fixed. The other side of the sample switching platform (5) has a first tube connection platform (15) and a second tube connection platform (16). The first tube connection platform (15) and the second tube connection platform (16) are connected to each other. The receiving platform (16) is symmetrically arranged on the side surface of the sample switching platform (5); the switching slider (17) is adapted to the sample switching platform (5), the switching slider (17) is connected to the sample switching platform (5), the switching slider (17) slides inside the sample switching platform (5), the switching slider (17) has a first switching slot (19) and a second switching slot (20) inside, the first switching slot (19) and the second switching slot (20) are symmetrically arranged inside the switching slider (17), the sample switching platform (5) has a cylinder connecting platform (18) on the side perpendicular to the detection chamber connecting pipe (6), the cylinder connecting platform (18) is fixedly connected to the side of the switching drive cylinder (7), the telescopic rod of the switching drive cylinder (7) is fixedly connected to the switching slider (17), the sample switching platform (5) is provided with a first nebulizer (8) and a second nebulizer (9) on the side away from the detection chamber (1).

2. The novel evaporative light scattering detector according to claim 1, characterized in that: The first atomizer (8) has a first atomizing tube (10) at the bottom, which is inserted into the first tube connecting platform (15) and fixed. The second atomizer (9) has a second atomizing tube (11) at the bottom, which is inserted into the second tube connecting platform (16) and fixed. The bottom of the detection chamber (1) has a discharge pipe (13), which is located on the side of the detection tube connecting platform (12).

3. A novel evaporative light scattering detector according to claim 2, characterized in that... The discharge pipe (13) has a sealing ball mounting platform (21) and a hollow support platform (24) inside. The hollow support platform (24) is located below the sealing ball mounting platform (21). The sealing ball mounting platform (21) has a sealing ball connecting groove (22) inside. The sealing ball connecting groove (22) is adapted to the sealing ball (23) and the sealing ball connecting groove (22) connects to the sealing ball (23).

4. A novel evaporative light scattering detector according to claim 2, characterized in that... The sealing ball (23) is inserted into the sealing ball connecting groove (22). The sealing ball (23) is connected to the hollow support platform (24) by a sealing spring (25). One end of the suction pipe (14) is inserted into the discharge pipe (13) and fixed. The other end of the suction pipe (14) is connected to the suction device.

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