A colorimetric residual chlorine analyzer

Abstract

The application discloses a colorimetric residual chlorine analyzer, and relates to the technical field of residual chlorine analyzers, which comprises a box body, an assembly base plate is mounted on the inner side of the box body, a residual chlorine detector host, a pump group conveying assembly, a detection module and a liquid storage module are arranged on the assembly base plate, two supporting pieces are symmetrically arranged on the assembly base plate, the pump group conveying assembly is mounted between the two supporting pieces, a locking piece capable of being pressed downward and reset is mounted on the supporting piece, an assembly notch matched with the locking piece is formed in the outer side edge of the pump group conveying assembly, and a locking groove matched with the locking end of the locking piece is formed in the inner wall of the top end of the assembly notch. The application realizes accurate positioning and stable fixing of the pump group conveying assembly when the pump group conveying assembly is pushed in, and through convenient pressing operation of the locking piece, the complex unlocking step during maintenance is omitted, and the quick dismounting purpose of the pump group conveying assembly is achieved.

Description

Technical Field

[0001] This application relates to the field of residual chlorine analyzer technology, and in particular to a colorimetric residual chlorine analyzer. Background Technology

[0002] Colorimetric residual chlorine analyzers are commonly used equipment for detecting residual chlorine in water quality and are widely used in tap water treatment, sewage treatment, swimming pool water quality monitoring and other fields. The realization of its core functions depends on the stable cooperation of its internal components. Among them, the pump group delivery component is the core component for delivering water samples and colorimetric reagents. Its installation stability and ease of maintenance directly affect the detection accuracy and long-term efficiency of the equipment.

[0003] In the structural design of existing colorimetric residual chlorine analyzers, the installation and fixing methods of the pump delivery components often have shortcomings: some devices directly fix the pump delivery components to the base plate inside the device with bolts and other fasteners. Although this fixing method can achieve initial positioning, after the pump delivery components have been in operation for a long time or have problems, they need to be inspected and maintained. During the maintenance process, special tools are required to disassemble the bolts one by one, which is cumbersome and prolongs the maintenance time. The problems related to the installation, fixing and maintenance disassembly of the pump delivery components in the existing technology have become key factors affecting the ease of use and long-term reliability of colorimetric residual chlorine analyzers. Utility Model Content

[0004] To address the problems of cumbersome equipment assembly procedures and long maintenance times in existing technologies, this application provides a colorimetric residual chlorine analyzer.

[0005] The colorimetric residual chlorine analyzer provided in this application adopts the following technical solution:

[0006] A colorimetric residual chlorine analyzer includes a housing, an assembly base plate is installed inside the housing, and a residual chlorine detector main unit, a pump delivery assembly, a detection module and a liquid storage module are arranged on the assembly base plate.

[0007] Two support members are symmetrically arranged on the mounting base plate, and the pump conveying assembly is installed between the two support members;

[0008] The support is equipped with a locking member that can be pressed down and reset. The outer edge of the pump conveying assembly is provided with an assembly slot that matches the locking member. The inner wall at the top of the assembly slot is provided with a locking groove that matches the locking end of the locking member.

[0009] By adopting the above technical solution, the assembly base provides a fixed foundation for the support components, and the two support components form the push-in support frame and disassembly guide path for the pump group conveying assembly. When pushing in, the locking component is pressed down to move its locking end down and align it with the assembly slot. After the pump group is pushed in along the support components, the locking component resets and cooperates with the locking slot to achieve fixation. When the pump group needs maintenance after long-term operation, the locking component is pressed again to release its cooperation with the locking slot, and the pump group can be directly removed along the support components. This cooperation relationship not only achieves precise positioning and stable fixation when the pump group conveying assembly is pushed in, but also eliminates the complicated unlocking steps during maintenance through the convenient pressing operation of the locking component, achieving the purpose of quick disassembly of the pump group conveying assembly and ensuring the efficiency of equipment maintenance after long-term operation.

[0010] Preferably, the support member includes a groove fixed on the mounting base plate, the groove having a support groove for supporting the pump assembly, a sliding opening communicating with the support groove on one side of the groove, the locking member being slidably installed in the sliding opening, a sliding hole being formed at the top of the groove, the top of the locking member being slidably inserted into the sliding hole, and a bottom groove being formed on the inner wall of the bottom end of the support groove, with an elastic component connected to the bottom end of the locking member disposed in the bottom groove.

[0011] By adopting the above technical solution, the support groove of the groove bar provides a push guide path for the pump conveying component, ensuring that the pump conveying component moves along a fixed trajectory when pushed in; the locking component achieves up-and-down sliding guidance through the sliding opening and sliding hole. When the locking component is pressed, it moves smoothly down in the sliding opening and sliding hole, avoiding deviation that would prevent it from aligning with the assembly groove; the elastic component in the bottom groove is connected to the bottom end of the locking component. After the pump conveying component is fully pushed into the support groove, the elastic component releases elastic force to push the locking component upward. This cooperation provides stable guidance and driving force for the pressing down and automatic reset of the locking component, ensuring the precise alignment of the locking component with the assembly groove during the pump conveying component is pushed in, and at the same time ensuring that the locking component can reliably move upward and cooperate with the locking groove after being pushed in.

[0012] Preferably, the locking member includes a vertical rod slidably inserted into the sliding opening, an L-shaped locking block fixed on one side of the vertical rod, the top end of the vertical section of the locking block engaging with the locking groove, a sliding rod slidably inserted into the sliding hole fixed at the top end of the vertical rod, and the bottom end of the vertical rod connected to the top end of the elastic component.

[0013] By adopting the above technical solution, before pushing in the pump unit conveying component, pressing the slide rod drives the vertical rod to move down along the slide opening and slide hole. The vertical rod simultaneously drives the L-shaped locking block down to align with the assembly slot, eliminating interference when the pump unit is pushed in. After the pump unit conveying component is fully pushed into the support groove, the L-shaped locking block is exactly below the locking groove. The elastic component pushes the vertical rod up, and the vertical rod drives the L-shaped locking block up synchronously. The top of its vertical section forms a fitting fit with the locking groove. The transmission action of the vertical rod achieves the precise displacement of the L-shaped locking block. The slide rod further improves the stability of the vertical rod sliding, ensuring the alignment accuracy of the locking block with the assembly slot and the reliability of the fitting with the locking groove, effectively limiting the axial movement of the pump unit conveying component.

[0014] Preferably, a stud is fixed at the bottom of the slide rod, and a threaded hole for connecting with the stud is opened at the top of the vertical rod.

[0015] By adopting the above technical solution, the stud and the screw hole form a detachable threaded connection. When the slide rod or vertical rod is worn and affects the pressing operation when the pump unit conveying component is pushed in or the displacement accuracy of the locking block, the slide rod can be rotated to make the stud disengage from the screw hole, and the slide rod or vertical rod can be replaced separately. This allows for the independent replacement of each component of the locking part without replacing the entire locking part. Under the premise of ensuring that the pump unit conveying component pushing and assembly function is not affected, the component replacement cost during equipment maintenance is reduced.

[0016] Preferably, the elastic component includes a support spring disposed in the bottom groove, and a sliding column slidably connected to the bottom end of the vertical rod is inserted inside the top of the bottom groove.

[0017] By adopting the above technical solution, when the pump unit conveying component is pushed in, pressing the vertical rod causes the sliding column to move downward, further compressing the support spring. After the pump unit conveying component is fully pushed in, the elastic restoring force of the support spring pushes the sliding column upward, thereby causing the vertical rod and locking block to move upward and engage with the locking groove. The support spring provides a stable reset driving force, and the sliding column realizes the force transmission between the support spring and the vertical rod, ensuring that the force value of the locking block moving upward and engaging is stable. At the same time, the detachable connection between the sliding column and the vertical rod makes it easy to disassemble and replace the support spring individually when the elasticity weakens, without affecting the pump unit conveying component pushing and assembly process.

[0018] Preferably, a protruding post is fixed at the top of the sliding post, and a connecting hole that mates with the protruding post is provided at the bottom of the vertical rod.

[0019] By adopting the above technical solution, the connection between the sliding column and the vertical rod can be completed by inserting the protruding column into the connecting hole during assembly, ensuring that the elastic force of the support spring can be transmitted to the vertical rod through the sliding column; during disassembly, the two can be separated by applying reverse force, which facilitates the maintenance of the sliding column or the vertical rod, simplifies the assembly steps of the sliding column and the vertical rod, and achieves a reliable connection between the two without the need for additional fastening parts.

[0020] Preferably, the outer circumference of the protruding post is provided with an annular groove, and a damping ring that is interference-fitted with the connecting hole is embedded in the annular groove.

[0021] By adopting the above technical solution, the damping ring and the connecting hole form an interference fit, generating stable friction force, avoiding gaps or relative displacement between the convex column and the connecting hole due to vibration during equipment operation, and ensuring the connection stability of the sliding column and the vertical rod.

[0022] Preferably, a plurality of abutting components are mounted on the assembly base plate. Each abutting component includes a support tube fixed on the assembly base plate. An end cap is fixed to one end of the support tube away from the pump conveying component. A guide post extending into the support tube is slidably inserted into the end cap. An end ring is fixed to one end of the guide post away from the assembly base plate. An abutting block is fixed to one end of the guide post away from the end ring and slidably disposed in the support tube. One side of the abutting block abuts against the pump conveying component. An abutting spring sleeved on the guide post is disposed in the support tube.

[0023] By adopting the above technical solution, during the process of pushing the pump unit delivery component into the two support members, the elastic force of the clamping spring pushes the clamping block to slide along the support member, so that the clamping block always keeps in contact with the side of the pump unit delivery component; after the pump unit delivery component is fully pushed in, the clamping block continuously applies lateral pressure to limit the lateral displacement of the pump unit delivery component, which works in conjunction with the axial fixation of the locking member to prevent the locking block from disengaging from the locking groove due to lateral shaking of the pump unit delivery component, while ensuring the relative position stability of the pump unit delivery component, the detection module, and the liquid storage module.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] By cooperating with the pump conveying assembly through two symmetrically arranged support components, and relying on the support grooves opened in the grooves of the support components, a stable support foundation is provided for the pump conveying assembly. At the same time, the locking component on the support component forms a linkage structure with the assembly slot and locking groove of the pump conveying assembly. The vertical rod of the locking component slides under the guidance of the sliding mouth and sliding hole, and the L-shaped locking block moves synchronously with the vertical rod. With the elastic restoring force provided by the support spring of the elastic component in the bottom groove, pressing the sliding rod can separate the locking block from the locking groove. After releasing, it automatically completes the locking. No additional fixing tools are required. The positioning, assembly and disassembly of the pump conveying assembly can be completed through the cooperation of mechanical transmission and elastic restoring. This greatly simplifies the assembly steps, shortens the equipment assembly time, and avoids the risk of component damage caused by positioning deviation during manual assembly. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the present application;

[0027] Figure 2 This is a three-dimensional schematic diagram of the pump assembly conveying components in this application;

[0028] Figure 3 This is a three-dimensional schematic diagram of the pump unit conveying components in this application.

[0029] Figure 4 This is a three-dimensional assembly diagram of the support and locking components in this application;

[0030] Figure 5 This is a perspective view of the clamping component in this application;

[0031] Figure 6 This is a cross-sectional schematic diagram of the clamping component in this application.

[0032] Figure label:

[0033] 1. Housing; 2. Assembly base plate; 3. Residual chlorine detector main unit; 4. Pump delivery assembly; 5. Detection module; 6. Liquid storage module;

[0034] 7. Locking component; 71. Vertical rod; 72. Locking block; 73. Screw hole; 74. Slide rod; 75. Stud;

[0035] 8. Clamping assembly; 81. Support; 82. End cap; 83. Guide post; 84. End ring; 85. Clamping spring; 86. Clamping block;

[0036] 9. Support component; 91. Groove bar; 92. Support groove; 93. Sliding opening; 94. Sliding hole; 95. Bottom groove;

[0037] 10. Elastic component; 101. Sliding column; 102. Protruding column; 103. Support spring; 104. Damping ring; 11. Assembly slot; 12. Locking slot. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1 - Figure 6 This application will be described in further detail.

[0039] This application discloses a colorimetric residual chlorine analyzer.

[0040] Reference Figure 1 and Figure 2 A colorimetric residual chlorine analyzer includes a housing 1 and an assembly base plate 2 installed inside the housing 1. The housing 1 has a rectangular parallelepiped structure, and a hinged door (not shown in the figure) is connected to one side of the housing 1. A sealing strip is pasted on the inside of the door to reduce the entry of external dust and moisture into the housing 1 when closed. The assembly base plate 2 is made of aluminum alloy plate and is fixedly connected to the reinforcing ribs of the inner wall of the housing 1 by bolts.

[0041] The residual chlorine detector main unit 3 and the detection module 5 are fixed to the assembly base plate 2 by bolts. The liquid storage module 6 is placed at the bottom of the housing 1. The residual chlorine detector main unit 3 is located at the top of the assembly base plate 2. The surface of the residual chlorine detector main unit 3 is embedded with a touch screen. The main unit integrates a single-chip microcomputer and a data storage module, which can receive signals from the detection module 5 and calculate the residual chlorine concentration. The pump group delivery component 4 is a micro peristaltic pump. The inlet of the pump group delivery component 4 is connected to the water sample bottle of the liquid storage module 6 through a silicone tube, and the outlet is connected to the detection module through a silicone tube. The cuvette in section 5 is used for quantitative delivery of water samples; the liquid storage module 6 includes multiple liquid storage bottles (namely "color developer bottle" and "waste liquid bottle"), which are fixed to the right side of the assembly base plate 2 by a bracket. The bracket has an arc-shaped groove that matches the outer diameter of the liquid storage bottle to prevent the liquid storage bottle from tipping over; the detection module 5 is located in the middle of the assembly base plate 2 and includes a light-shielding shell, a quartz cuvette, an LED light source and a photoelectric sensor. The LED light source and the photoelectric sensor are located on both sides of the cuvette, and can detect the residual chlorine content of the water sample after color development by the light transmission intensity.

[0042] Reference Figure 2 and Figure 3 Two symmetrically distributed support members 9 are fixed to the assembly base plate 2 by bolts. The pump conveying assembly 4 is installed between the two support members 9. The locking member 7 is installed on the support member 9 to limit the axial displacement of the pump conveying assembly 4. The outer edge of the pump conveying assembly 4 is provided with an assembly slot 11 that is adapted to the locking member 7. The inner wall of the top of the assembly slot 11 is provided with a locking groove 12 that cooperates with the locking end of the locking member 7. The width of the assembly slot 11 is 0.2 to 0.3 mm larger than the width of the locking end of the locking member 7 to ensure that the locking member 7 can move in and out smoothly.

[0043] The support member 9 is used to support and guide the pump delivery assembly 4. When the pump delivery assembly 4 is pushed in, the locking member 7 is pressed down to make its locking end move down and align with the assembly slot 11. After the pump is pushed in along the support member 9, the locking member 7 resets and cooperates with the locking slot 12 to fix it. When the pump needs maintenance after a long period of operation, the locking member 7 is pressed again to release its cooperation with the locking slot 12, and the pump can be taken out directly along the support member 9.

[0044] Reference Figure 3 and Figure 4The support member 9 includes a groove 91 fixed to the mounting base plate 2 by bolts. The groove 91 has a support groove 92 for supporting the pump conveying component 4. A sliding opening 93 communicating with the support groove 92 is opened on one side of the groove 91. The sliding opening 93 is a rectangular hole. The height of the sliding opening 93 is 5-8 mm larger than the height of the vertical rod 71 of the locking member 7 to ensure that the vertical rod 71 can slide up and down. A sliding hole 94 is opened at the top of the groove 91. The sliding hole 94 is a circular hole and communicates with the sliding opening 93 to provide guidance for the top of the locking member 7. A bottom groove 95 is opened on the inner wall of the bottom end of the support groove 92. The bottom groove 95 is a cylindrical hole for accommodating the elastic component 10.

[0045] The support groove 92 of the groove 91 provides a pushing guide and disassembly sliding path for the pump unit delivery assembly 4, ensuring that the pump unit moves along a fixed trajectory when pushed in and taken out; the locking member 7 achieves smooth up and down sliding through the sliding port 93 and the sliding hole 94.

[0046] Reference Figure 3 and Figure 4 The locking component 7 includes a vertical rod 71 that slides into the sliding opening 93. The vertical rod 71 is made of 45# steel and is galvanized for rust prevention. Its cross-section is rectangular, and the clearance between the vertical rod 71 and the sliding opening 93 is 0.1mm. An L-shaped locking block 72 is fixed to one side of the vertical rod 71 by argon arc welding. The top of the vertical section of the locking block 72 can adopt a rounded transition structure to avoid scratching the inner wall of the assembly groove 11. The height of the locking block 72 is consistent with the depth of the locking groove 12. To ensure that there is no looseness after fitting; the top of the vertical rod 71 is connected to a slide rod 74 that slides into the slide hole 94. The slide rod 74 is made of acrylic material and the top protrudes from the surface of the groove 91 for easy pressing by the operator; the bottom of the slide rod 74 is integrally formed with a stud 75, which has an external thread structure. The top of the vertical rod 71 is provided with a screw hole 73 that matches the stud 75. The slide rod 74 and the vertical rod 71 are detachably fixed through the threaded connection, which is convenient for replacing damaged parts later.

[0047] Reference Figure 3 and Figure 4 An elastic component 10 connected to the bottom end of the vertical rod 71 is provided in the bottom groove 95. The elastic component 10 includes a support spring 103 provided in the bottom groove 95. The support spring 103 is a cylindrical helical spring. A sliding post 101 is slidably inserted inside the top of the bottom groove 95. The outer diameter of the sliding post 101 is the same as the inner diameter of the bottom groove 95 (fitting clearance 0.1mm), and it can slide smoothly along the bottom groove 95. A protruding post 102 is integrally formed at the top of the sliding post 101. A connecting hole adapted to the protruding post 102 is opened at the bottom end of the vertical rod 71. After the protruding post 102 is inserted into the connecting hole, the sliding post 101 and the vertical rod 71 are initially positioned. An annular groove is opened on the outer circumference of the protruding post 102. A damping ring 104 with an interference fit with the connecting hole is embedded in the annular groove. The damping ring 104 is made of nitrile rubber and the interference fit is 0.1mm.

[0048] The support spring 103, in its natural state, can cooperate with the sliding column 101 to push the vertical rod 71 upward, thereby achieving the locking purpose of the locking block 72 and the locking groove 12. The damping ring 104 can enhance the friction between the protrusion 102 and the connecting hole, preventing the two from separating due to equipment vibration.

[0049] Reference Figure 5 and Figure 6 Two sets of symmetrically distributed clamping components 8 are also installed on the assembly base plate 2. The clamping components 8 include a support tube 81 fixed to the assembly base plate 2 by welding. The support tube 81 is an aluminum alloy round tube. The end of the support tube 81 away from the pump conveying component 4 is connected to an end cap 82 by thread. The end cap 82 has a guide hole in the center. A guide post 83 extending into the support tube 81 is slidably inserted into the guide hole of the end cap 82. An end ring 84 is threaded on the end of the guide post 83 away from the assembly base plate 2. The end ring 84 is a round iron ring. A clamping block 86 slidably disposed in the support tube 81 is welded to the end of the guide post 83 away from the end ring 84. The clamping block 86 is made of rubber and is cylindrical. The outer diameter of the clamping block 86 is the same as the inner diameter of the support tube 81. A clamping spring 85 is sleeved on the guide post 83 in the support tube 81. The clamping spring 85 is a cylindrical helical spring.

[0050] The clamping component 8 is used to apply pressure to the housing of the pump delivery component 4 to prevent shaking. The guide post 83 is made of stainless steel and the surface is polished to reduce sliding resistance. A rubber pad is attached to one side of the clamping block 86 to avoid scratching the housing of the pump delivery component 4. In its natural state, the clamping spring 85 can push the clamping block 86 to move towards the pump delivery component 4 so that the clamping block 86 keeps in contact with the side of the pump delivery component 4.

[0051] The implementation principle of a colorimetric residual chlorine analyzer according to an embodiment of this application is as follows:

[0052] When installing the pump set delivery assembly 4, the operator first presses the slide rods 74 on the two support members 9: the slide rods 74 drive the vertical rods 71 ​​to slide downwards along the slide openings 93 and slide holes 94, and the vertical rods 71 ​​simultaneously push the slide column 101 to compress the support spring 103 until the top of the vertical section of the L-shaped locking block 72 is lower than the groove plane of the support groove 92; then align the two sides of the pump set delivery assembly 4 with the support grooves 92 of the two support members 9, and push it inwards along the support grooves 92 until the assembly groove 11 is aligned with the locking block 72, and continue to push the pump set delivery assembly 4 until it is completely in contact with the support groove 92. The inner wall (at this time, the locking block 72 is exactly below the locking groove 12); the slide rod 74 is released, the support spring 103 releases its elastic force, pushing the slide column 101 and the vertical rod 71 to move upward. The vertical rod 71 drives the locking block 72 to move upward synchronously. The top of the vertical section of the locking block 72 is inserted into the locking groove 12, completing the axial fixation of the pump group conveying assembly 4; at the same time, the clamping spring 85 of the clamping assembly 8 pushes the clamping block 86 to move towards the pump group conveying assembly 4. The clamping block 86 abuts against the side of the pump group conveying assembly 4, limiting its lateral displacement, and realizing the stable installation of the pump group conveying assembly 4;

[0053] During testing, the operator opens the door of chamber 1, injects the water sample to be tested into the water sample bottle of storage module 6, closes the door, and presses the "start" button on the residual chlorine detector host 3: the pump delivery component 4 starts, quantitatively delivering the water sample in the water sample bottle to the quartz cuvette of detection module 5 (the delivery volume is preset to 5 mL by the host); then the colorimetric reagent in the colorimetric reagent bottle is delivered to the cuvette through another peristaltic pump (not marked in the figure) (delivery volume 1 mL), and after the water sample and colorimetric reagent are mixed, they are allowed to stand for 30 seconds to complete the color development; the LED light source of detection module 5 emits light with a wavelength of 510 nm, which passes through the color developed water sample, and the photoelectric sensor receives the transmitted light signal and converts it into an electrical signal, which is transmitted to the residual chlorine detector host 3; the host compares the electrical signal with the standard concentration curve through the built-in algorithm, calculates the residual chlorine concentration, and displays the result on the display screen. The result can be saved for the operator to record;

[0054] When the pump set conveying component 4 requires maintenance after prolonged operation (e.g., 1000 hours of cumulative operation), the operator should first disconnect the power supply to the equipment, press the slide bar 74 to move the vertical bar 71 and locking block 72 downwards, and disengage the top of the vertical section of the locking block 72 from the locking groove 12; then pull the pump set conveying component 4 outwards so that it slides out along the support groove 92; if the support spring 103 needs to be replaced, the slide column 101 can be pulled out of the connection hole of the vertical bar 71, the old spring can be removed and a new spring can be replaced, and then the protrusion 102 can be inserted into the connection hole; after maintenance is completed, the pump set conveying component 4 can be reinstalled according to the installation procedure, and the equipment can be put back into use.

[0055] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A colorimetric residual chlorine analyzer, characterized in that, include: The box (1) has an assembly base plate (2) installed inside the box (1). The assembly base plate (2) is equipped with a residual chlorine detector main unit (3), a pump conveying assembly (4), a detection module (5), and a liquid storage module (6). Two support members (9) are symmetrically arranged on the mounting base plate (2), and the pump conveying assembly (4) is installed between the two support members (9); The support member (9) is equipped with a locking member (7) that can be pressed down and reset. The outer edge of the pump conveying assembly (4) is provided with an assembly slot (11) that is adapted to the locking member (7). The inner wall of the top of the assembly slot (11) is provided with a locking groove (12) that cooperates with the locking end of the locking member (7).

2. The colorimetric residual chlorine analyzer according to claim 1, characterized in that: The support member (9) includes a groove (91) fixed on the mounting base plate (2). The groove (91) has a support groove (92) for supporting the pump conveying assembly (4). A sliding opening (93) communicating with the support groove (92) is provided on one side of the groove (91). The locking member (7) is slidably installed in the sliding opening (93). A sliding hole (94) is provided at the top of the groove (91). The top of the locking member (7) is slidably inserted into the sliding hole (94). A bottom groove (95) is provided on the inner wall of the bottom end of the support groove (92). An elastic component (10) connected to the bottom end of the locking member (7) is provided in the bottom groove (95).

3. The colorimetric residual chlorine analyzer according to claim 2, characterized in that: The locking member (7) includes a vertical rod (71) that slides into the sliding opening (93). An L-shaped locking block (72) is fixed on one side of the vertical rod (71). The top end of the vertical section of the locking block (72) is locked into the locking groove (12). A sliding rod (74) that slides into the sliding hole (94) is fixed at the top end of the vertical rod (71). The bottom end of the vertical rod (71) is connected to the top end of the elastic component (10).

4. A colorimetric residual chlorine analyzer according to claim 3, characterized in that: The bottom end of the slide rod (74) is fixed with a stud (75), and the top of the vertical rod (71) is provided with a screw hole (73) that connects to the stud (75).

5. A colorimetric residual chlorine analyzer according to claim 3, characterized in that: The elastic component (10) includes a support spring (103) disposed in the bottom groove (95), and a sliding column (101) detachably connected to the bottom end of the vertical rod (71) is slidably inserted inside the top end of the bottom groove (95).

6. A colorimetric residual chlorine analyzer according to claim 5, characterized in that: The top of the sliding column (101) is fixed with a protruding column (102), and the bottom of the vertical rod (71) is provided with a connecting hole that cooperates with the protruding column (102).

7. A colorimetric residual chlorine analyzer according to claim 6, characterized in that: The outer circumference of the protruding post (102) is provided with an annular groove, and a damping ring (104) that is interference-fitted with the connecting hole is embedded in the annular groove.

8. A colorimetric residual chlorine analyzer according to claim 1, characterized in that: Multiple clamping components (8) are installed on the assembly base plate (2). Each clamping component (8) includes a support tube (81) fixed on the assembly base plate (2). An end cap (82) is fixed to one end of the support tube (81) away from the pump conveying assembly (4). A guide post (83) extending into the support tube (81) is slidably inserted on the end cap (82). An end ring (84) is fixed to one end of the guide post (83) away from the assembly base plate (2). A clamping block (86) slidingly disposed in the support tube (81) is fixed to one end of the guide post (83) away from the end ring (84). One side of the clamping block (86) abuts against the pump conveying assembly (4). A clamping spring (85) sleeved on the guide post (83) is provided inside the support tube (81).

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