Test head protection device of BOD (Biochemical Oxygen Demand) tester

Abstract

The utility model relates to the technical field of water treatment, in particular to a testing head protection device of a BOD (Biochemical Oxygen Demand) tester, which comprises the BOD tester, a positioning component and a sealing component, the top of the BOD tester is connected with the positioning component in a sliding manner, and the sealing component is arranged at the bottom of the positioning component; the positioning assembly comprises a pressing plate, the bottom of the pressing plate is connected with a sleeve rod through a bolt, the BOD tester is connected with the sleeve rod in a sleeved mode, one end of the sleeve rod is connected with a limiting block through a bolt, and the position, located between the limiting block and the pressing plate, of the periphery of the sleeve rod is connected with a compression spring in a sleeved mode. The auxiliary positioning protection mechanism is additionally arranged, auxiliary protection treatment is carried out on the test head while the test head is rapidly inserted into the culture bottle in a pressing and positioning mode, and after the test head is used, the test head can be recycled to reduce exposure in the air, so that the safety and the stability in use are improved, and the use effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, specifically to a test head protection device for a BOD analyzer. Background Technology

[0002] A BOD meter is an instrument used to measure the biochemical oxygen demand (BOD) in water. It is widely used in environmental monitoring, wastewater treatment, industrial production, scientific research and laboratories, agriculture and aquaculture, among other fields. The test head is one of the main components for achieving the measurement.

[0003] Currently, BOD analyzers lack auxiliary positioning and protection mechanisms when using test heads. Typically, the test head needs to be inserted into the culture flask from the top during use. However, in practice, external forces can easily cause the flask to tip over, leading to the test head and connecting tube detaching from the culture flask and causing damage such as pulling or bumping. This not only affects the accuracy of the measurement but also accelerates the lifespan of the test head. Therefore, a test head protection device for BOD analyzers is proposed to add an auxiliary positioning and protection mechanism. This device uses a pressing and positioning method to quickly insert the test head into the culture flask while simultaneously providing auxiliary protection. Furthermore, after use, the device can be recycled to reduce exposure to air, improving safety and stability, and ultimately enhancing the overall performance. Summary of the Invention

[0004] To address the problems in the existing technology, this utility model provides a test head protection device for a BOD analyzer, which allows for quick insertion of the test head into the culture flask using a pressing and positioning method, while simultaneously providing auxiliary protection, thereby improving the performance.

[0005] The technical solution adopted by this utility model to solve its technical problem is a test head protection device for a BOD measuring instrument, including a BOD measuring instrument, a positioning component and a sealing component. The positioning component is slidably connected to the top of the BOD measuring instrument, and a sealing component is provided at the bottom of the positioning component.

[0006] The positioning assembly includes a pressure plate, a sleeve rod is bolted to the bottom of the pressure plate, and a BOD measuring instrument is sleeved and connected to the sleeve rod. One end of the sleeve rod is bolted to a limit block, and a compression spring is sleeved and connected to the outer periphery of the sleeve rod between the limit block and the pressure plate.

[0007] By adopting the above technical solution, an auxiliary positioning and protection mechanism can be added. By using elastic pushing and sliding pressing, the sample culture bottle can be limited and fixed. At the same time, it can form a protection around the test head, which can avoid damage such as tilting, pulling and bumping caused by external forces. The structure is simple, the cost is low, and the use is more stable and reliable.

[0008] Specifically, the sealing assembly includes a mounting base, and the mounting base is connected to a pressure plate by bolts. A driven sprocket is rotatably connected to the bottom of the mounting base, and a sealing block is connected to the bottom of the driven sprocket by bolts. A rubber ring is glued to the periphery of the sealing block.

[0009] By adopting the above technical solution, the mounting base, driven sprocket, sealing block, and rubber ring can increase the auxiliary sealing mechanism. By rotating, an auxiliary and reinforced sealing structure is formed around the test head, reducing the gap between the bottle mouth and the test head, thereby improving the accuracy of the measurement.

[0010] Specifically, a handle is bolted to the top of the pressure plate, a drive sprocket is rotatably connected to one side of the bottom of the pressure plate, a chain belt is meshed between the drive sprocket and the driven sprocket, and a stepper motor is bolted to one side of the top of the pressure plate, and the stepper motor is connected to the drive sprocket via a drive shaft.

[0011] By adopting the above technical solution, the handle facilitates the upward sliding of the pressure plate, and the drive sprocket, chain belt and stepper motor can drive the sealing assembly to rotate synchronously through meshing connection.

[0012] Specifically, the top of the driven sprocket is connected to a limiting ring by welding, the bottom of the mounting base is provided with a limiting groove corresponding to the limiting ring, the bottom of the mounting base is connected to a test head by bolts, the driven sprocket and the sealing block are both provided with through holes corresponding to the test head, and the test head passes through the through holes through the driven sprocket and the sealing block. A connecting hose is provided on one side of the BOD measuring instrument, and one end of the connecting hose is connected to the test head.

[0013] By adopting the above technical solution, the limiting ring and limiting groove facilitate the rotational connection of the mounting base to the driven sprocket, the test head and connecting hose facilitate the connection to the BOD measuring instrument for measurement, and the through hole facilitates the through-hole use of the test head, while avoiding the rotation of the driven sprocket and sealing block from affecting the use of the test head.

[0014] Specifically, the top of the BOD measuring instrument has a placement groove, the inside of the BOD measuring instrument has a groove, and the BOD measuring instrument is connected to the sleeve rod through the groove. The surface of the BOD measuring instrument is threaded with a tightening screw corresponding to the sleeve rod through a reserved threaded hole.

[0015] By adopting the above technical solution, the placement groove facilitates the placement of sample culture bottles, the groove facilitates the connection of the sleeve rod, and tightening the screw facilitates the limiting and fixing of the sleeve rod.

[0016] The beneficial effects of this utility model are:

[0017] The present invention discloses a test head protection device for a BOD analyzer. By incorporating the BOD analyzer, pressure plate, sleeve rod, limiting block, and compression spring, an auxiliary positioning and protection mechanism is added. The sample culture bottle is fixed and limited by elastic pushing and sliding pressing. At the same time, it forms a protective barrier around the test head, preventing damage such as tilting, pulling, and bumping caused by external forces. The structure is simple, the cost is low, and the use is more stable and reliable.

[0018] The present invention discloses a test head protection device for a BOD analyzer. Through the installation base, driven sprocket, sealing block and rubber ring, the device can improve the sealing of the test head during operation by rotating it while the test head is inserted into the culture bottle for measurement. This makes the device more stable, effective and practical. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the positioning component structure of this utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of the BOD measuring instrument of this utility model;

[0023] Figure 4 This is a schematic diagram of the sealing component structure of this utility model;

[0024] Figure 5 This is a side sectional view of the pressure plate structure of this utility model;

[0025] In the diagram: 1. BOD analyzer; 101. Placement slot; 102. Groove; 2. Positioning assembly; 201. Pressure plate; 202. Sleeve rod; 203. Limiting block; 204. Compression spring; 205. Handle; 206. Drive sprocket; 207. Chain belt; 208. Stepper motor; 3. Sealing assembly; 301. Mounting base; 302. Driven sprocket; 303. Sealing block; 304. Rubber ring; 305. Limiting ring; 306. Limiting groove; 307. Through hole; 4. Test head; 5. Connecting hose; 6. Tightening screw. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] To facilitate the rapid insertion of the test head into the culture flask using a pressing and positioning method, while simultaneously providing auxiliary protection to improve its effectiveness, such as... Figure 1-3 As shown, the test head protection device of the BOD measuring instrument of this utility model includes a BOD measuring instrument 1, a positioning component 2 and a sealing component 3. The positioning component 2 is slidably connected to the top of the BOD measuring instrument 1, and the sealing component 3 is provided at the bottom of the positioning component 2.

[0028] The positioning component 2 includes a pressure plate 201. The bottom of the pressure plate 201 is connected to a sleeve rod 202 by bolts, and the BOD measuring instrument 1 is sleeved and connected to the sleeve rod 202. One end of the sleeve rod 202 is connected to a limit block 203 by bolts. A compression spring 204 is sleeved and connected between the limit block 203 and the pressure plate 201 on the periphery of the sleeve rod 202.

[0029] In use, the pressure plate 201, sleeve rod 202, limiting block 203 and compression spring 204 can be used to add an auxiliary positioning and protection mechanism. By using elastic force to push and slide down, the sample culture bottle is fixed and limited. At the same time, it can form a protection around the test head, which can avoid damage such as tilting, pulling and bumping caused by external forces. The structure is simple, the cost is low, and the use is more stable and reliable.

[0030] To improve measurement accuracy, for example, such as Figure 3 , Figure 4 As shown, the present invention also includes a sealing assembly 3 comprising a mounting base 301, wherein the mounting base 301 is connected to a pressure plate 201 by bolts, a driven sprocket 302 is rotatably connected to the bottom of the mounting base 301, a sealing block 303 is connected to the bottom of the driven sprocket 302 by bolts, and a rubber ring 304 is glued to the periphery of the sealing block 303.

[0031] In use, an auxiliary sealing mechanism can be added through the mounting base 301, driven sprocket 302, sealing block 303 and rubber ring 304. By rotating, an auxiliary reinforced sealing structure is formed around the test head, reducing the gap between the bottle mouth and the test head, thereby improving the accuracy of the measurement.

[0032] For example, such as Figure 2 , 5 As shown, the present invention also includes a handle 205 bolted to the top of the pressure plate 201, a drive sprocket 206 rotatably connected to one side of the bottom of the pressure plate 201, a chain belt 207 meshing with the outer periphery of the drive sprocket 206 and the driven sprocket 302, and a stepper motor 208 bolted to one side of the top of the pressure plate 201, and the stepper motor 208 is connected to the drive sprocket 206 via a drive shaft.

[0033] In use, the handle 205 facilitates the upward sliding of the pressure plate 201. Through the drive sprocket 206, chain belt 207 and stepper motor 208, the sealing assembly 3 can be driven to rotate synchronously by the meshing connection.

[0034] For example, such as Figure 1 , 4 As shown, this utility model also includes a limiting ring 305 welded to the top of the driven sprocket 302, a limiting groove 306 corresponding to the limiting ring 305 opened at the bottom of the mounting base 301, a test head 4 bolted to the bottom of the mounting base 301, through holes 307 corresponding to the test head 4 opened in both the driven sprocket 302 and the sealing block 303, and the test head 4 passes through the driven sprocket 302 and the sealing block 303 through the through holes 307, and a connecting hose 5 is provided on one side of the BOD measuring instrument 1, and one end of the connecting hose 5 is connected to the test head 4.

[0035] In use, the limiting ring 305 and the limiting groove 306 facilitate the rotation of the mounting base 301 to connect to the driven sprocket 302. The test head 4 and the connecting hose 5 facilitate the connection to the BOD measuring instrument 1 for measurement. The through hole 307 facilitates the through-hole use of the test head 4, while preventing the rotation of the driven sprocket 302 and the sealing block 303 from affecting the use of the test head 4.

[0036] For example, such as Figure 1 , 3 As shown, the present invention also includes a placement groove 101 on the top of the BOD measuring instrument 1, a groove 102 inside the BOD measuring instrument 1, and a connecting rod 202 sleeved on the BOD measuring instrument 1 through the groove 102. A tightening screw 6 corresponding to the rod 202 is threadedly connected to the surface of the BOD measuring instrument 1 through a reserved threaded hole.

[0037] In use, the placement slot 101 facilitates the placement of sample culture bottles, the groove 102 facilitates the connection of the sleeve rod 202, and the tightening screw 6 facilitates the limiting and fixing of the sleeve rod 202.

[0038] In use, the operator first lifts the pressure plate 201 upwards using the handle 205, places the culture bottle into the placement slot 101, and uses the elastic force of the compression spring 204 to push the lower limit block 203. The sleeve rod 202 drives the pressure plate 201 to slide downwards, allowing the test head 4 to be inserted into the corresponding culture bottle. Then, the operator manually turns on the stepper motor 208 to drive the drive sprocket 206 to rotate. The chain belt 207 drives the drive sprocket 206 to rotate synchronously. The sealing block 303 and its rubber ring 304 slowly enter the mouth of the culture bottle through rotation, providing auxiliary sealing and reinforcement. Finally, the tightening screw 6 is turned to limit and fix the sleeve rod 202. The overall structure is simple, low-cost, easy to operate, more stable and safe to use, and also helps to extend the service life of the test head 4.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A test head protection device for a BOD meter, characterized by, Including BOD tester (1), positioning assembly (2) and sealing assembly (3), the top of the BOD tester (1) is slidably connected with the positioning assembly (2), and the bottom of the positioning assembly (2) is provided with the sealing assembly (3); The positioning assembly (2) includes a pressing plate (201), the bottom of the pressing plate (201) is connected with a sleeve rod (202) through bolts, and the BOD tester (1) is connected with the sleeve rod (202), one end of the sleeve rod (202) is connected with a limiting block (203) through bolts, and the sleeve rod (202) is connected with a compression spring (204) between the limiting block (203) and the pressing plate (201).

2. The test head protection device for a BOD meter according to claim 1, wherein The sealing assembly (3) includes a mounting seat (301), and the mounting seat (301) is connected with the pressing plate (201) through bolts, the bottom of the mounting seat (301) is rotatably connected with a driven sprocket (302), the bottom of the driven sprocket (302) is connected with a sealing block (303) through bolts, and the periphery of the sealing block (303) is connected with a rubber ring (304) through gluing.

3. The test head protection device for a BOD meter of claim 2, wherein, The top of the pressing plate (201) is connected with a handle (205) through bolts, one side of the bottom of the pressing plate (201) is rotatably connected with a driving sprocket (206), the periphery of the driving sprocket (206) and the driven sprocket (302) is connected with a chain belt (207) through meshing, one side of the top of the pressing plate (201) is connected with a stepping motor (208) through bolts, and the stepping motor (208) is connected with the driving sprocket (206) through a driving shaft.

4. The test head protection device for a BOD meter of claim 2, wherein, The top of the driven sprocket (302) is connected with a limiting ring (305) through welding, the bottom of the mounting seat (301) is provided with a limiting groove (306) corresponding to the limiting ring (305), the bottom of the mounting seat (301) is connected with a test head (4) through bolts, and the driven sprocket (302) and the sealing block (303) are both provided with through holes (307) corresponding to the test head (4), and the test head (4) penetrates the driven sprocket (302) and the sealing block (303) through the through holes (307), one side of the BOD tester (1) is provided with a connecting hose (5), and one end of the connecting hose (5) is connected with the test head (4).

5. The test head protection apparatus for a BOD meter of claim 1, wherein, The top of the BOD tester (1) is provided with a placing groove (101), and the BOD tester (1) is provided with a groove (102) in the BOD tester (1), and the BOD tester (1) is connected with the sleeve rod (202) through the groove (102), and the surface of the BOD tester (1) is connected with a tightening screw rod (6) corresponding to the sleeve rod (202) through a reserved threaded hole.

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