Gas chamber structure of gas analyzer

Abstract

The utility model discloses a gas chamber structure of a gas analyzer, which relates to the technical field of photoelectric and micro electro mechanical systems, and comprises an outer shell and an inner shell, the front end of the outer shell is provided with a bin gate, the two ends of the outer shell are respectively provided with a transmitting end and a receiving end, the surface of the inner shell is provided with a filter element, and the inner shell is provided with a gas inlet and a gas outlet. The two ends of the interior of the outer shell are each provided with a convenient-to-install mechanism, each convenient-to-install mechanism comprises a fixing block and an annular groove, the fixing blocks are fixedly connected to the interior of the outer shell, and the side faces of the fixing blocks are fixedly connected with tension springs. Therefore, the inner shell can be firmly installed in the outer shell through cooperation of the fixing cover, the inserting part, the groove, the arc-shaped block, the annular groove and other structures, the fixing cover and the outer shell can be driven to be separated by pulling a pull rod on the side face of the fixing cover when disassembly is needed, assembly and disassembly are easy, and later maintenance is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of photoelectric and micro-electromechanical systems, in particular to a gas chamber structure of a gas analyzer. Background Art

[0002] Gas analyzers are process analyzers that measure gas composition. In many production processes, especially in production processes with chemical reactions, automatic control based solely on physical parameters such as temperature, pressure, and flow is often not enough. Due to the great differences in the gases being analyzed and the variety of analysis principles, there are many types of gas analyzers. Commonly used ones include thermal conductivity gas analyzers, electrochemical gas analyzers, and infrared absorption analyzers.

[0003] The utility model with publication number CN106596406A discloses an air chamber structure of a non-dispersive spectral gas analyzer, including an air chamber inner shell, a filter element, an air chamber outer shell, a front cover, a rear cover, a transmitting end and a receiving end; the air chamber inner shell and the air chamber outer shell are both annular structures, and small holes are evenly distributed on the circumferential surface of the air chamber inner shell, the inner diameter of the air chamber outer shell is larger than the outer diameter of the air chamber inner shell, and through holes are opened on the front cover and the rear cover. In the above application document, the air chamber structure not only greatly reduces the influence of a small amount of dust pollution on the calculation result of the gas concentration, but also the air chamber inner shell is more troublesome to install and disassemble, which is not conducive to the replacement of the internal filter element. Utility Model Content

[0004] The utility model aims to provide a gas chamber structure of a gas analyzer, which solves the existing problems.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a gas chamber structure of a gas analyzer, comprising an outer shell and an inner shell, wherein a door is provided at the front end of the outer shell, a transmitting end and a receiving end are provided at two ends of the outer shell respectively, a filter element is provided on the surface of the inner shell, and convenient installation mechanisms are provided at both ends of the inner shell of the outer shell, wherein the convenient installation mechanism comprises a fixing block and an annular groove, wherein the fixing block is fixedly connected to the inner part of the outer shell, a tension spring is fixedly connected to the side of the fixing block, a fixing cover is fixedly connected to one end of the tension spring away from the fixing block, and an insert is fixedly connected to the side of the fixing cover away from the tension spring. The top and bottom of the insertion part are provided with grooves, and telescopic springs are arranged inside the two grooves, and the ends of the two telescopic springs away from the inner walls of the grooves are fixedly connected with arc blocks, and the ends of the two connecting rods away from the air pressure chamber are respectively fixedly connected with the two arc blocks, the annular groove is arranged on the inner wall of the annular groove, and a deceleration mechanism is arranged on the side of the fixed cover close to the tension spring.

[0007] Furthermore, the telescopic spring is in a stretched state in the initial state, and two-thirds of the arc block is located in the annular groove in the initial state. When the telescopic spring rebounds, it will drive the insertion part to leave the inner shell body, and the arc block is stuck in the annular groove so that the insertion part cannot leave the inner shell body.

[0008] Furthermore, the width of the annular groove is the same as the width of the groove, and the arc block is made of aluminum alloy. The arc block made of aluminum alloy has high strength and is not easily deformed or damaged.

[0009] Furthermore, the arc surface of the arc block faces the center of the inner shell, and the depth of the groove is greater than the length of the arc block. When the arc surface of the arc block is squeezed, it will move into the groove, and the arc block can be completely retracted into the groove.

[0010] Furthermore, the deceleration mechanism includes a connecting frame, which is fixedly connected to a side of the fixed cover close to the tension spring, and a roller is rotatably connected to the inner side of the connecting frame. A square groove is provided on the surface of the roller, and an elastic spring is arranged inside the square groove. A resistance block is slidably connected to the inside of the square groove through the elastic spring.

[0011] Furthermore, the surface of the roller is in contact with the inner wall of the outer shell in the initial state, and the resistance block is completely in the square groove in the initial state. When the roller moves with the fixed cover, it will rub against the inner wall of the outer shell to generate rotation. When the resistance block is in the square groove, it will not affect the movement of the fixed cover.

[0012] Furthermore, the friction between the resistance block and the inner wall of the square groove is greater than the gravity of the resistance block. The resistance block is made of rubber material, and the resistance block will not move out of the square groove due to gravity. The rubber resistance block will generate greater resistance when it contacts the inner wall of the outer shell.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model is provided with a convenient installation mechanism, so that the inner shell can be firmly installed inside the outer shell through the cooperation of the fixed cover, the insertion part, the groove, the arc block, the ring groove and other structures. When disassembly is required, the side pull rod of the fixed cover can be pulled to drive the fixed cover to be separated from the outer shell, which is simple to install and disassemble and convenient for later maintenance.

[0015] 2. The utility model is provided with a deceleration mechanism, so that the speed of the fixed cover driven by the rebound of the tension spring can be slowed down through the cooperation of components such as the roller, the elastic spring, and the resistance block, so as to prevent the fixed cover from moving too fast due to inertia and colliding with other structures inside the outer shell to cause damage.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a three-dimensional cross-sectional view of the overall structure of the utility model;

[0020] Figure 3 It is a three-dimensional cross-sectional view of the internal structure of the utility model;

[0021] Figure 4 It is a three-dimensional schematic diagram of the convenient installation mechanism structure of the utility model;

[0022] Figure 5 It is a three-dimensional cross-sectional view of the convenient installation mechanism structure of the utility model;

[0023] Figure 6 It is a three-dimensional schematic diagram of the deceleration mechanism structure of the utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Outer shell; 2. Door; 3. Transmitter; 4. Receiver; 5. Inner shell; 6. Filter element; 7. Convenient installation mechanism; 71. Fixing block; 72. Tension spring; 73. Fixing cover; 74. Insertion part; 75. Air pressure chamber; 76. Pull rod; 77. Connecting rod; 78. Groove; 79. Telescopic spring; 710. Arc block; 711. Ring groove; 8. Retarding mechanism; 81. Connecting frame; 82. Roller; 83. Square groove; 84. Elastic spring; 85. Resistance block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0027] See also Figure 1-6 The utility model is a gas chamber structure of a gas analyzer, including an outer shell 1 and an inner shell 5. A door 2 is provided at the front end of the outer shell 1. A transmitting end 3 and a receiving end 4 are respectively provided at the two ends of the outer shell 1. A filter element 6 is provided on the surface of the inner shell 5. Convenient installation mechanisms 7 are provided at both ends of the inner shell 1. The convenient installation mechanism 7 includes a fixing block 71 and an annular groove 711. The fixing block 71 is fixedly connected to the inner part of the outer shell 1. A tension spring 72 is fixedly connected to the side of the fixing block 71. A fixing cover 73 is fixedly connected to the end of the tension spring 72 away from the fixing block 71. An insertion portion 74 is fixedly connected to the side of the fixing cover 73 away from the tension spring 72. A pneumatic chamber 75 is penetrated and fixedly connected to the interior of the entry portion 74. A pull rod 76 is piston-slidingly connected to the inner wall of one end of the pneumatic chamber 75. A connecting rod 77 is piston-slidingly connected to the inner walls of the other two ends of the pneumatic chamber 75. Grooves 78 are provided at the top and bottom of the insertion portion 74. Telescopic springs 79 are provided inside the two grooves 78. The ends of the two telescopic springs 79 away from the inner walls of the grooves 78 are fixedly connected to arc blocks 710. The ends of the two connecting rods 77 away from the pneumatic chamber 75 are respectively fixedly connected to the two arc blocks 710. An annular groove 711 is provided on the inner wall of the annular groove 711. A deceleration mechanism 8 is provided on the side of the fixed cover 73 close to the tension spring 72.

[0028] The telescopic spring 79 is in a stretched state in the initial state, and two-thirds of the arc block 710 is located in the annular groove 711 in the initial state. When the telescopic spring 79 rebounds, it will drive the insertion part 74 to leave the inner shell body 5. The arc block 710 is stuck in the annular groove 711, so that the insertion part 74 cannot leave the inner shell body 5.

[0029] The width of the annular groove 711 is the same as the width of the groove 78. The arc block 710 is made of aluminum alloy. The arc block 710 made of aluminum alloy has high strength and is not easily deformed or damaged.

[0030] The arc surface of the arc block 710 faces the center of the inner shell 5, and the depth of the groove 78 is greater than the length of the arc block 710. When the arc surface of the arc block 710 is squeezed, it will move into the groove 78, and the arc block 710 can be completely retracted into the groove 78.

[0031] The deceleration mechanism 8 includes a connecting frame 81, which is fixedly connected to one side of the fixed cover 73 close to the tension spring 72. The inner side of the connecting frame 81 is rotatably connected to a roller 82. A square groove 83 is provided on the surface of the roller 82. An elastic spring 84 is provided inside the square groove 83. A resistance block 85 is slidably connected to the inside of the square groove 83 through the elastic spring 84.

[0032] The surface of the roller 82 is in contact with the inner wall of the outer shell 1 in the initial state, and the resistance block 85 is completely in the square groove 83 in the initial state. When the roller 82 moves with the fixed cover 73, it will rub against the inner wall of the outer shell 1 to generate rotation. When the resistance block 85 is in the square groove 83, it will not affect the movement of the fixed cover 73.

[0033] The friction between the resistance block 85 and the inner wall of the square groove 83 is greater than the gravity of the resistance block 85. The resistance block 85 is made of rubber. The resistance block 85 will not move out of the square groove 83 due to gravity. The resistance block 85 made of rubber will generate greater resistance when it contacts the inner wall of the outer shell 1.

[0034] When the inner shell 5 needs to be disassembled, the compartment door 2 is opened and the pull rod 76 on the side of the fixed cover 73 at one end is pulled. When the pull rod 76 is pulled, the air pressure in the air pressure compartment 75 drives the two connecting rods 77 to move. The movement of the two connecting rods 77 drives the two arc blocks 710 to leave the annular groove 711 and retract into the groove 78. At this time, the tension spring 72 will rebound and drive the fixed cover 73 and the insertion portion 74 to leave the inner shell 5. After the pull rod 76 is released, the telescopic spring 79 drives the arc block 710 and the connecting rod 77 to be restored. The air pressure in the air pressure compartment 75 drives the pull rod 76 to be restored. The fixed cover 73 at the other end is the same. When the inner shell 5 needs to be reinstalled, the inner shell 5 is pressed into the outer shell 1, and the fixed cover 73 is pushed to fit with the side end of the inner shell 5. The insertion portion 74 enters the inner shell 5, and the arc surface of the arc block 710 is initially squeezed by the inner wall of the inner shell 5 and retracts into the groove 78. When the locking cam 73 is in the unlocked position, the locking cam 710 is in the unlocked position, and the locking cam 710 is in the unlocked position, so that the locking cam 710 can be unlocked easily.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A gas chamber structure of a gas analyzer, comprising an outer shell (1) and an inner shell (5), characterized in that: The front end of the outer shell (1) is provided with a door (2), the two ends of the outer shell (1) are respectively provided with a transmitting end (3) and a receiving end (4), the surface of the inner shell (5) is provided with a filter element (6), and the two ends of the inner part of the outer shell (1) are both provided with convenient installation mechanisms (7); The convenient installation mechanism (7) comprises a fixing block (71) and an annular groove (711), wherein the fixing block (71) is fixedly connected to the interior of the outer shell (1), a tension spring (72) is fixedly connected to the side of the fixing block (71), an end of the tension spring (72) away from the fixing block (71) is fixedly connected to a fixing cover (73), a side of the fixing cover (73) away from the tension spring (72) is fixedly connected to an insertion portion (74), an interior of the insertion portion (74) penetrates and is fixedly connected to a pneumatic chamber (75), an inner wall piston at one end of the pneumatic chamber (75) is slidably connected to a pull rod (76), and the pneumatic chamber (75) The inner walls at the other two ends are both connected to connecting rods (77) by piston sliding, the top and bottom of the insertion part (74) are both provided with grooves (78), and telescopic springs (79) are arranged inside the two grooves (78), and the ends of the two telescopic springs (79) away from the inner walls of the grooves (78) are fixedly connected to arc blocks (710), and the ends of the two connecting rods (77) away from the air pressure chamber (75) are respectively fixedly connected to the two arc blocks (710), and the annular groove (711) is opened on the inner wall of the annular groove (711), and a deceleration mechanism (8) is arranged on the side of the fixed cover (73) close to the tension spring (72).

2. The gas chamber structure of a gas analyzer according to claim 1, characterized in that: The telescopic spring (79) is in a stretched state in an initial state, and two thirds of the arc block (710) is located in the annular groove (711) in an initial state.

3. The gas chamber structure of a gas analyzer according to claim 2, characterized in that: The width of the annular groove (711) is the same as the width of the groove (78), and the arc block (710) is made of aluminum alloy.

4. The gas chamber structure of a gas analyzer according to claim 3, characterized in that: The arc surface of the arc block (710) faces the center of the inner shell (5), and the depth of the groove (78) is greater than the length of the arc block (710).

5. The gas chamber structure of a gas analyzer according to claim 4, characterized in that: The deceleration mechanism (8) comprises a connecting frame (81), the connecting frame (81) is fixedly connected to a side of the fixed cover (73) close to the tension spring (72), a roller (82) is rotatably connected to the inner side of the connecting frame (81), a square groove (83) is provided on the surface of the roller (82), an elastic spring (84) is arranged inside the square groove (83), and a resistance block (85) is slidably connected to the inside of the square groove (83) via the elastic spring (84).

6. The gas chamber structure of a gas analyzer according to claim 5, characterized in that: The surface of the roller (82) is in contact with the inner wall of the outer shell (1) in the initial state, and the resistance block (85) is completely located in the square groove (83) in the initial state.

7. The gas chamber structure of a gas analyzer according to claim 5, characterized in that: The friction force between the resistance block (85) and the inner wall of the square groove (83) is greater than the gravity of the resistance block (85), and the resistance block (85) is made of rubber.

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