Gas chromatograph convenient for heat dissipation

Abstract

The utility model relates to the technical field of gas chromatographic instruments, and discloses a gas chromatographic instrument convenient for heat dissipation, which comprises a chromatographic instrument body, wherein a mounting plate is arranged in the chromatographic instrument body; the heat dissipation net is arranged on one side of the chromatograph body; a clamping assembly is arranged on the mounting plate; the clamping assembly comprises a shell which is fixedly arranged on the mounting plate; the spring I is arranged in the shell; the clamping block is arranged in the shell, and one end of the clamping block is connected with the first spring. The insertion rod is arranged on one side of the heat dissipation net; the extrusion block is arranged at one end of the insertion rod; according to the gas chromatograph, the clamping assembly and the extrusion block are staggered through the clamping block, and the extrusion block can be separated from the interior of the shell through the insertion rod to complete installation. Compared with an existing device which only needs to be pushed during mounting and dismounting, operation is simpler and more convenient. According to the gas chromatograph, the springback assembly drives the baffle to be close to the mounting plate through retraction of the second spring, and the transverse rod is pushed to move so that the heat dissipation net can be separated from the interior of the chromatograph body.

Description

Technical Field

[0001] This utility model relates to the field of gas chromatography technology, specifically to a gas chromatograph that facilitates heat dissipation. Background Technology

[0002] A gas chromatograph (GC) is an instrument that uses chromatographic separation and detection techniques to perform qualitative and quantitative analysis of complex mixtures of multiple components. A GC typically consists of a gas path system, an injection system, a separation system, a detection and temperature control system, and a recording system. The injection system includes a heating device to vaporize liquid or solid samples into vapor for detection. Because the vaporization chamber of a GC operates at high temperatures, a heat dissipation mesh is usually installed on the instrument casing. However, during operation, the internal temperature of the GC often becomes very high, which can easily affect the resolution and accuracy of the GC under prolonged use.

[0003] Chinese utility model CN216434009U describes a gas chromatograph with convenient heat dissipation. It includes a heat dissipation mesh disassembly structure. The principle is to set an installation column on one side of the heat dissipation mesh and a snap-fit ​​plate on the inside of the chromatograph. By controlling the snap-fit ​​plate to snap the installation column, the heat dissipation mesh can be installed.

[0004] However, existing devices require simultaneously pushing the mounting bases on both sides away and installing the heat sink onto one side of the chromatograph during installation, necessitating two people to complete the disassembly, which is inconvenient. Therefore, to address the aforementioned problems, a chromatograph with a convenient heat sink for disassembly and assembly was designed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, this utility model provides a gas chromatograph that facilitates heat dissipation, has the advantages of easy installation and removal of heat dissipation mesh, and more convenient operation, thus solving the problem of inconvenient operation of the existing device.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a gas chromatograph with convenient heat dissipation, comprising: a chromatograph body with an internal mounting plate; a heat dissipation mesh disposed on one side of the chromatograph body; a locking assembly disposed on the mounting plate, the locking assembly comprising: a housing fixedly disposed on the mounting plate; a spring disposed inside the housing; a locking block disposed inside the housing and connected at one end to the spring; an insertion rod disposed on one side of the heat dissipation mesh; a squeezing block disposed at one end of the insertion rod; a movable ring slidably sleeved on the outer wall of the insertion rod; a retaining ring fixedly sleeved on the outer wall of the insertion rod; and a spring-loaded assembly disposed on the mounting plate for pushing the heat dissipation mesh to separate from the chromatograph body.

[0009] Optionally, the extrusion block has an arc-shaped design.

[0010] Optionally, the engaging assembly further includes: one end of a limiting rod passing through the outer wall of the housing and through the spring to connect with the locking block.

[0011] Optionally, the engaging assembly further includes a pull-twist mechanism disposed on one side of the heat dissipation mesh.

[0012] Optionally, the engaging components are arranged symmetrically in pairs in four groups.

[0013] Optionally, the rebound assembly includes: a crossbar extending through the mounting plate at one end; a baffle disposed at one end of the crossbar; and two springs sleeved on the outside of the crossbar, with both ends connected to the baffle and the mounting plate.

[0014] Optionally, the rebound assembly further includes a rubber block disposed at one end of the crossbar.

[0015] Optionally, the rebound assembly further includes: a cylindrical sleeve fitted on the outside of the second spring and connected to the mounting plate.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a gas chromatograph with convenient heat dissipation, which has the following features:

[0018] Beneficial effects:

[0019] 1. In this gas chromatograph, the locking assembly is separated from the squeezing block by a locking block, allowing the squeezing block to detach from the housing for installation. Compared to existing devices, which only require pushing during installation and disassembly, this design is much simpler and more convenient.

[0020] 2. In this gas chromatograph, the spring-loaded assembly retracts, causing the baffle to approach the mounting plate and pushing the crossbar to move, thus detaching the heat dissipation mesh from the inside of the chromatograph body. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the heat dissipation mesh separated from the chromatograph of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the housing of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the springback assembly of this utility model.

[0025] In the diagram: 11. Chromatograph body; 12. Mounting plate; 13. Heat dissipation mesh;

[0026] 2. Engaging assembly; 21. Housing; 22. Spring 1; 23. Locking block; 24. Insert rod; 25. Pressing block; 26. Moving ring; 27. Snap ring; 28. Limiting rod; 29. ​​Pull-torsion mechanism;

[0027] 3. Rebound assembly; 31. Crossbar; 32. Baffle; 33. Spring II; 34. Rubber block; 35. Cylinder. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0030] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In related technologies, the principle involves setting an installation column on one side of the heat dissipation mesh and a snap-fit ​​plate inside the chromatograph. By controlling the snap-fit ​​plate to snap the installation column, the heat dissipation mesh can be installed. However, existing devices require simultaneously pushing the mounting seats on both sides away and installing the heat dissipation mesh onto one side of the chromatograph during installation. This requires two people to complete the disassembly and reassembly, making the operation inconvenient.

[0032] To address some of the problems in related technologies, this application provides a gas chromatograph with convenient heat dissipation. When the heat dissipation mesh 13 needs to be disassembled, simply push the heat dissipation mesh 13 into the chromatograph body 11, and push the insertion rod 24 into the depth of the housing 21. Simultaneously, the locking block 23 contacts the movable ring 26. At this time, the movable ring 26 is restricted in its movement by the retaining ring 27. Therefore, during the insertion process, the locking block 23 is compressed and retracted by the movable ring 26, compressing the spring 22 until it is displaced from the movable ring 26. Then, the spring 22 rebounds, pushing the locking block 23 to move. The heat dissipation mesh 13 is pushed out of the chromatograph body 11 by the spring-loaded component 3. During this process, the locking block 23 drags the movable ring 26 to fit with the squeezing block 25, so that the locking block 23 is squeezed back until it is misaligned with the squeezing block 25, so that the insertion rod 24 is disengaged from the housing 21, thereby completing the disassembly of the heat dissipation mesh 13. After cleaning, when installing, it is only necessary to insert the insertion rod 24 into the housing 21 so that the squeezing block 25 squeezes the locking block 23 back until the locking block 23 is misaligned with the squeezing block 25. The flat design of one side of the squeezing block 25 can prevent the insertion rod 24 from being moved out of the housing 21.

[0033] The following is in conjunction with the appendix Figure 1-4 This application is described with reference to specific embodiments:

[0034] This application provides a gas chromatograph with convenient heat dissipation, including: a chromatograph body 11 with an internal mounting plate 12; a heat dissipation mesh 13 disposed on one side of the chromatograph body 11; a locking assembly 2 disposed on the mounting plate 12, the locking assembly 2 including: a housing 21 fixedly disposed on the mounting plate 12; a spring 22 disposed inside the housing 21; a locking block 23 disposed inside the housing 21 and connected at one end to the spring 22; an insertion rod 24 disposed on one side of the heat dissipation mesh 13; a pressing block 25 disposed at one end of the insertion rod 24; a movable ring 26 slidably sleeved on the outer side wall of the insertion rod 24; a retaining ring 27 fixedly sleeved on the outer side wall of the insertion rod 24; and a spring-loaded assembly 3 disposed on the mounting plate 12 for pushing the heat dissipation mesh 13 to separate from the chromatograph body 11.

[0035] Specifically, the gas chromatograph body 11 is an instrument used to separate and analyze components in complex mixtures. Its working principle is based on the differences in the distribution or adsorption coefficients of the components in the mixture between the mobile phase (carrier gas) and the stationary phase, thereby achieving separation and detection. Heat dissipation is mainly achieved through two methods: natural cooling and forced air cooling. Natural cooling depends on the ambient temperature and the instrument's natural heat dissipation capacity. Typically, after the heating power is turned off, the instrument will gradually cool to room temperature, but this method is time-consuming, potentially taking 30 minutes to 1 hour to reach a safe temperature. To accelerate cooling, a fan or dedicated air-cooling device can be used for forced air cooling, which usually completes the cooling process within 1 to 2 hours. Over time, dust or impurities will accumulate on the heat dissipation mesh, requiring regular cleaning.

[0036] The movable ring 26 is a frustum-shaped ring with an inclined outer surface and one side being flat so that it can fit into one side of the extrusion block 25 to form a whole.

[0037] When installing the heat dissipation mesh 13, first insert the insertion rod 24 on one side of the heat dissipation mesh 13 into the interior of the housing 21. During the insertion process, the pressing block 25 presses against the locking block 23. Because one end of the pressing block 25 is arc-shaped and one side of the locking block 23 is inclined, the pressing process will push the locking block 23 to rise until the locking block 23 and the pressing block 25 are misaligned. Then, the spring 22 rebounds and pushes the locking block 23 downward. (See attached image) Figure 3 As shown, the locking block 23 can prevent the squeezing block 25 from being pulled out of the housing 21. When dust adheres to the surface of the heat dissipation mesh 13, affecting the heat dissipation effect, the heat dissipation mesh 13 needs to be disassembled and cleaned. Simply continue to push the heat dissipation mesh 13 into the chromatograph body 11, causing the insertion rod 24 to be inserted deep into the housing 21. At the same time as insertion, the locking block 23 contacts the movable ring 26. At this time, the movable ring 26 is restricted by the locking ring 27. Therefore, during the insertion process, the locking block 23 is squeezed and retracted by the movable ring 26 and compressed by the spring 22. Refer to the attached diagram. Figure 3 Until the movable ring 26 is displaced and moves to the right side of the locking block 23, the spring 22 rebounds and pushes the locking block 23 to move. At this time, the rebound component 3 pushes the heat dissipation mesh 13 out of the chromatograph body 11. During this process, the locking block 23 drags the movable ring 26 to fit with the squeezing block 25 to form a whole. Because the outer side of the movable ring 26 is designed with a slope, when the movable ring 26 and the squeezing block 25 move to the left, they will push the locking block 23 to retract until the movable ring 26 and the squeezing block 25 move to the left side of the locking block 23. Then the restriction on the squeezing block 25 is released, and the insertion rod 24 can be pulled to disengage from the housing 21, thereby completing the disassembly of the heat dissipation mesh 13. The heat dissipation mesh 13 can be cleaned. After cleaning, the heat dissipation mesh 13 is installed on one side of the mounting plate 12 according to the above method.

[0038] Furthermore, the extrusion block 25 has an arc-shaped design.

[0039] The rounded design reduces scratches when in contact with the card block 23.

[0040] Furthermore, the engaging assembly 2 also includes: a limiting rod 28 with one end penetrating through the outer wall of the housing 21 and passing through the spring 22 to connect with the locking block 23.

[0041] The design of the limiting rod 28 during use can prevent it from bending when the spring 22 is compressed, thus better protecting the spring 22.

[0042] Furthermore, the engaging assembly 2 also includes a pull torsion 29 disposed on one side of the heat dissipation mesh 13.

[0043] The design of the pull knob 29 makes it easy to grip and control the insertion of the heat dissipation mesh 13 into the interior of the chromatograph body 11.

[0044] Furthermore, the engaging components 2 are arranged symmetrically in pairs in four groups.

[0045] The design includes four sets of components, providing four connection points between the heat dissipation mesh 13 and the mounting plate 12, thus ensuring a more secure installation.

[0046] Furthermore, the rebound assembly 3 includes: a crossbar 31 with one end penetrating the mounting plate 12; a baffle 32 disposed at one end of the crossbar 31; and a spring 33 sleeved on the outside of the crossbar 31, with both ends connected to the baffle 32 and the mounting plate 12.

[0047] When in use, after the heat dissipation mesh 13 is released from its fixation, the spring 2 33 retracts and pulls the baffle 32 closer to the mounting plate 12, while simultaneously pushing the crossbar 31 to move. One end of the crossbar 31 can push the heat dissipation mesh 13 to separate from the chromatograph body 11.

[0048] Furthermore, the rebound assembly 3 also includes a rubber block 34 disposed at one end of the crossbar 31.

[0049] The rubber block 34, being made of a soft material, reduces wear and tear on the heat dissipation mesh 13 when in use, and also prevents the crossbar 31 from detaching from the mounting plate 12.

[0050] Furthermore, the rebound assembly 3 also includes a cylinder 35 sleeved on the outside of the second spring 33 and connected to the mounting plate 12.

[0051] The design of cylinder 35 during use can protect spring 33, making it less susceptible to damage.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," and "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0053] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas chromatograph with convenient heat dissipation, comprising: The chromatograph body has an internal mounting plate. A heat dissipation mesh is disposed on one side of the chromatograph body, characterized in that: a locking assembly is provided on the mounting plate, the locking assembly comprising: The housing is fixedly mounted on the mounting plate; Spring one is disposed inside the housing; A locking block is disposed inside the housing and one end is connected to the spring; Insert rod, located on one side of the heat dissipation mesh; A compression block is disposed at one end of the insertion rod; The movable ring is slidably sleeved on the outer wall of the insertion rod; A retaining ring is fixedly sleeved on the outer side wall of the insertion rod; The mounting plate is equipped with a spring-loaded component for pushing the heat dissipation mesh to separate from the chromatograph body.

2. A gas chromatograph with convenient heat dissipation according to claim 1, characterized in that: The extrusion block has an arc-shaped design.

3. A gas chromatograph with convenient heat dissipation according to claim 1, characterized in that: The engagement assembly further includes: The limiting rod has one end that passes through the outer wall of the housing and through the spring to connect with the locking block.

4. A gas chromatograph with convenient heat dissipation according to claim 1, characterized in that: The engagement assembly further includes: A pull knob is located on one side of the heat dissipation mesh.

5. A gas chromatograph with convenient heat dissipation according to claim 1, characterized in that: The engaging components are arranged symmetrically in pairs in four groups.

6. A gas chromatograph with convenient heat dissipation according to claim 1, characterized in that: The rebound assembly includes: A crossbar, one end of which passes through the mounting plate; A baffle is provided at one end of the crossbar; Spring 2 is sleeved on the outside of the crossbar and connected at both ends to the baffle and the mounting plate.

7. A gas chromatograph with convenient heat dissipation according to claim 6, characterized in that: The rebound assembly also includes: A rubber block is provided at one end of the crossbar.

8. A gas chromatograph with convenient heat dissipation according to claim 6, characterized in that: The rebound assembly also includes: A cylinder is fitted onto the outside of the second spring and connected to the mounting plate.

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