Pretreatment device for detecting hexavalent chromium in water body

Abstract

The utility model discloses a pretreatment device for detecting hexavalent chromium in a water body, which belongs to the technical field of pretreatment devices and comprises a stirring mechanism, the stirring mechanism comprises a treatment box, a stirring piece is rotatably arranged at the bottom of the inner wall of the treatment box, and the lower end of the stirring piece penetrates through the treatment box and is fixedly provided with a first bevel gear; a gear rod is rotationally arranged at the bottom of the treatment box, the gear rod is meshed with the first bevel gear, a motor is fixedly arranged on the side face of the treatment box, and a rotating shaft of the motor penetrates through the treatment box and is fixedly connected with one end of the gear rod; the filtering mechanism comprises a filtering plate which is obliquely arranged in the treatment box; during use, when the gear rod rotates, the two reciprocating screw rods are driven to rotate through the transmission part, then the reciprocating screw rods drive the movable rods to move along the sliding grooves, and the connecting plate, the fixed plate and the scraping and sweeping part move, so that impurities on the filter plate are scraped and swept through the scraping and sweeping part, the possibility of blockage of the filter plate is reduced, and the filter plate is more convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of pretreatment devices, in particular to a pretreatment device for detecting hexavalent chromium in water. Background Art

[0002] Chromium is a silvery-white hard metal. Chromium is an essential trace element for the human body and plays a special role in the body's sugar metabolism and lipid metabolism. Trivalent chromium is an element that is beneficial to the human body, while hexavalent chromium is toxic. Therefore, it is necessary to use testing equipment to detect hexavalent chromium in water. However, before the water is tested, it is necessary to treat the water with a pretreatment device.

[0003] Before the existing water body detection, some water bodies need to be treated by a pretreatment device, and the impurities in the water body are filtered by a filtering mechanism. After the device is used for a long time, more impurities are easily attached to the filtering mechanism. However, the filtering mechanism is set inside the device, so it is troublesome to clean the filtering mechanism. To this end, we propose a pretreatment device for hexavalent chromium detection in water to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] Therefore, the purpose of the utility model is to provide a pretreatment device for detecting hexavalent chromium in water, which can solve the problem that some existing water bodies need to be treated by a pretreatment device before detection, and impurities in the water are filtered by a filtering mechanism. When the device is used for a long time, more impurities are easily attached to the filtering mechanism. However, the filtering mechanism is arranged inside the equipment, so it is more troublesome to clean the filtering mechanism.

[0006] In order to solve the above technical problems, the utility model provides a pretreatment device for hexavalent chromium detection in water, which adopts the following technical scheme: comprising a stirring mechanism, which comprises a treatment box, a stirring member is rotatably provided at the bottom of the inner wall of the treatment box, the lower end of the stirring member passes through the treatment box and is fixedly provided with a first bevel gear, a gear rod is rotatably provided at the bottom of the treatment box, the gear rod is meshed with the first bevel gear, a motor is fixedly provided on the side of the treatment box, and the rotating shaft of the motor passes through the treatment box and is fixedly connected to one end of the gear rod;

[0007] The filtering mechanism includes a filter plate obliquely arranged in a processing box, two reciprocating screws are symmetrically arranged on the bottom of the processing box about the gear rod, the two reciprocating screws are connected to the gear rod by setting a transmission part, two sliding grooves are opened upward at the bottom of the processing box, movable rods are movably arranged in the two sliding grooves, the lower ends of the two movable rods are movably sleeved on the two reciprocating screw rods respectively, the upper ends of the two movable rods are fixedly connected with a connecting plate, the lower ends of the connecting plate are fixedly connected with a fixed plate, the fixed plate is movably provided with a scraping member, and the scraping member is slidably matched with the top surface of the filter plate.

[0008] By adopting the above technical scheme, this scheme first injects the water body to be tested into the treatment box, then filters the impurities in the water body through the filter plate, and puts the reaction reagent into the treatment box to mix with the water body, and then drives the gear rod to rotate and drives the first bevel gear and the stirring element to rotate through the motor, so that the water body and the reaction reagent are stirred by the stirring element, thereby accelerating the mixing speed of the water body and the reaction reagent.

[0009] Optionally, the processing box includes a box body and two bottom plates, the two bottom plates are symmetrically arranged at the bottom of the box body, a liquid inlet pipe is fixedly inserted at the top of the box body, a sealing plate is hinged at the top of the box body side, and a liquid discharge pipe is fixedly inserted at the bottom of the box body side.

[0010] By adopting the above technical scheme, this scheme facilitates supporting the box body through two bottom plates, and facilitates the operator to inject water and reaction reagents into the treatment box through the liquid inlet pipe. When the operator opens the sealing plate, it is convenient to clean the impurities accumulated on the filter plate, and the treated water is convenient to be discharged through the drain pipe, and then the hexavalent chromium in the water is detected by the detection equipment.

[0011] Optionally, the stirring member includes a vertical rod and a plurality of stirring rods, and the plurality of stirring rods are grouped in two and are distributed in a ring shape on the vertical rod.

[0012] By adopting the above technical solution, the present solution drives a plurality of stirring rods to rotate through the vertical rod, so as to facilitate stirring of the water body and the reaction reagent.

[0013] Optionally, the gear rod includes a rod body and a second bevel gear, and both ends of the rod body are rotatably plugged into opposite sides of two base plates respectively, and the second bevel gear is fixedly sleeved on the rod body and meshes with the first bevel gear.

[0014] By adopting the above technical solution, the present solution can easily drive the rod body and the second bevel gear to rotate through the motor, and then drive the first bevel gear, the vertical rod and the stirring rod to rotate through the second bevel gear to stir the water body and the reaction reagent.

[0015] Optionally, a disc is fixedly provided at the bottom of the filter plate, and a plurality of inclined grooves are opened on the bottom surface of the disc along the circumference of the disc. A turntable is fixedly provided on the upper end of the vertical rod, and a knocking rod is vertically inserted on the turntable. A spring is fixedly provided on the lower end of the knocking rod, and the upper end of the spring is fixedly connected to the bottom surface of the turntable. The upper end of the knocking rod slides in sequence with the plurality of inclined grooves opened on the bottom surface of the disc.

[0016] By adopting the above technical solution, when the vertical rod rotates, the turntable and the knocking rod are driven to rotate. At this time, the knocking rod is pulled up by the spring and always abuts against the bottom surface of the disc. When the knocking rod is inserted into the inclined groove, it moves up quickly and collides with the disc, thereby causing the disc and the filter plate to vibrate.

[0017] Optionally, the transmission member includes three transmission wheels and a transmission chain, the three transmission wheels are fixedly mounted on the rod body and two reciprocating screw rods respectively, and the three transmission wheels are driven by the transmission chain.

[0018] By adopting the above technical solution, the present solution cooperates with the three transmission chains to enable the two reciprocating screws to rotate synchronously when the motor drives the rod body to rotate.

[0019] Optionally, the connecting plate is T-shaped, the lower end of the connecting plate is fixedly connected to the fixed plate, the top surface of the connecting plate is slidably matched with the top surface of the inner wall of the box body, and one end of the connecting plate cross plate is fixedly connected to the upper end of the movable plate.

[0020] By adopting the above technical solution, when the movable rod moves, the fixed plate and the scraping member move synchronously through the connecting plate. At this time, the impurities on the filter plate are scraped by the scraping member and the impurities are scraped to the sealing plate.

[0021] Optionally, the scraping member includes a scraper and two round rods, the two round rods are symmetrically arranged on the top surface of the scraper, the two round rods pass through the fixed plate and are fixedly provided with compression springs, and the upper ends of the two compression springs are respectively fixedly connected to the bottom surfaces of the two connecting plate cross plates.

[0022] By adopting the above technical solution, the present solution facilitates to push the round rod and the scraper downward by means of the compression spring, thereby prompting the scraper to always fit with the top surface of the filter plate when the fixed plate drives the round rod and the scraper to move.

[0023] In summary, the utility model has at least one of the following beneficial effects: 1. When the gear rod rotates, the two reciprocating screws are driven to rotate through the transmission member, and then the reciprocating screw drives the movable rod to move along the slide groove and the connecting plate, the fixed plate and the scraping member to move, so that the impurities on the filter plate are scraped by the scraping member, thereby reducing the possibility of filter plate clogging and making it more convenient to clean the filter plate;

[0024] 2. The motor drives the gear rod to rotate and drives the first bevel gear and the stirring element to rotate, so that the water body and the reaction reagent are stirred by the stirring element, thereby accelerating the mixing speed of the water body and the reaction reagent. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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.

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0027] Figure 2 It is a partial three-dimensional structural cross-sectional view of the stirring mechanism of the utility model;

[0028] Figure 3 It is a partial three-dimensional structural cross-sectional view of the filter mechanism of the utility model;

[0029] Figure 4 It is a partial three-dimensional unfolded structural cross-sectional view of the back side of the disc of the utility model.

[0030] Description of reference numerals: 100, stirring mechanism; 101, processing box; 101a, box body; 101b, bottom plate; 101c, liquid inlet pipe; 101d, sealing plate; 101e, liquid discharge pipe; 102, stirring member; 102a, vertical rod; 102b, stirring rod; 102c, turntable; 102d, knocking rod; 102e, spring; 103, first bevel gear; 104, gear rod; 104a, rod body; 104b, second bevel gear; 105, motor;

[0031] 200, filtering mechanism; 201, filter plate; 201a, disc; 201b, inclined groove; 202, reciprocating screw; 203, transmission member; 203a, transmission wheel; 203b, transmission chain; 204, slide; 205, movable rod; 206, connecting plate; 207, fixed plate; 208, scraping member; 208a, scraper; 208b, round rod; 208c, compression spring. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 The utility model is described in further detail.

[0033] Embodiment 1, refer to Figure 1-4In this embodiment, in order to solve the problem that some water bodies need to be treated by a pretreatment device before detection, impurities in the water body are filtered by a filtering mechanism. When the device is used for a long time, more impurities are easily attached to the filtering mechanism. However, the filtering mechanism is arranged inside the device, so it is troublesome to clean the filtering mechanism. The utility model discloses a pretreatment device for hexavalent chromium detection in water bodies.

[0034] The invention comprises a stirring mechanism 100, which comprises a treatment box 101. The treatment box 101 comprises a box body 101a and two bottom plates 101b. The two bottom plates 101b are symmetrically arranged at the bottom of the box body 101a. A liquid inlet pipe 101c is fixedly inserted at the top of the box body 101a. A sealing plate 101d is hinged at the top of the side of the box body 101a. A liquid discharge pipe 101e is fixedly inserted at the bottom of the side of the box body 101a. The box body 101a is conveniently supported by the two bottom plates 101b. The liquid inlet pipe 101c is convenient for an operator to inject water and a reaction reagent into the treatment box 101. When the operator opens the sealing plate 101d, it is convenient to clean the impurities accumulated in the treatment box 101. The treated water is conveniently discharged through the liquid discharge pipe 101e, and then the hexavalent chromium in the water is detected by the detection equipment.

[0035] A stirring member 102 is rotatably provided at the bottom of the inner wall of the processing box 101 , and the stirring member 102 stirs the water body and the reaction reagent, thereby accelerating the mixing speed of the water body and the reaction reagent.

[0036] The lower end of the stirring member 102 passes through the processing box 101 and is fixedly provided with a first bevel gear 103. A gear rod 104 is rotatably provided at the bottom of the processing box 101, and the gear rod 104 is meshed with the first bevel gear 103. A motor 105 is fixedly provided on the side of the processing box 101. The rotating shaft of the motor 105 passes through the processing box 101 and is fixedly connected to one end of the gear rod 104. The gear rod 104 is driven to rotate by the motor 105 and the first bevel gear 103 and the stirring member 102 are driven to rotate, so that the water body and the reaction reagent are stirred by the stirring member 102, thereby accelerating the mixing speed of the water body and the reaction reagent.

[0037] The filtering mechanism 200 includes a filter plate 201 obliquely arranged in the processing box 101. Two reciprocating screw rods 202 are symmetrically arranged at the bottom of the processing box 101 about the gear rod 104. The two reciprocating screw rods 202 are connected to the gear rod 104 by setting a transmission member 203. Two slide grooves 204 are opened upward at the bottom of the processing box 101. The two slide grooves 204 are movably provided with movable rods 205. The lower ends of the two movable rods 205 are movably sleeved on the two reciprocating screw rods 202 respectively. The movable part 203 includes three transmission wheels 203a and a transmission chain 203b. The three transmission wheels 203a are fixedly mounted on the rod body 104a and the two reciprocating screw rods 202 respectively. The three transmission wheels 203a are driven by the transmission chain 203b. When the motor 105 drives the rod body 104a to rotate, the two reciprocating screw rods 202 rotate synchronously through the cooperation of the transmission chain 203b and the three transmission chains 203b. When the reciprocating screw rod 202 rotates, the movable rod 205 moves along the inner wall of the slide groove 204.

[0038] The upper ends of the two movable rods 205 are fixedly connected with connecting plates 206, and the lower ends of the connecting plates 206 are fixedly connected with fixed plates 207. The connecting plates 206 are T-shaped, and the lower ends of the connecting plates 206 are fixedly connected with the fixed plates 207. The top surfaces of the connecting plates 206 are slidably matched with the top surfaces of the inner walls of the box body 101a. One end of the cross plate of the connecting plate 206 is fixedly connected with the upper end of the movable plate. When the movable rod 205 moves, the connecting plate 206 causes the fixed plate 207 to move synchronously with the scraping member 208. At this time, the scraping member 208 is used to scrape the impurities on the filter plate 201 and scrape the impurities to the sealing plate 101d, so as to facilitate the operator to clean the impurities later.

[0039] A scraper 208 is movably provided on the fixed plate 207, and the scraper 208 is slidably matched with the top surface of the filter plate 201. The scraper 208 includes a scraper 208a and two round rods 208b. The two round rods 208b are symmetrically arranged on the top surface of the scraper 208a. The two round rods 208b pass through the fixed plate 207 and are fixedly provided with compression springs 208c. The upper ends of the two compression springs 208c are respectively fixedly connected to the bottom surfaces of the cross plates of the two connecting plates 206. The compression springs 208c facilitate the downward movement of the round rods 208b and the scraper 208a, thereby prompting the fixed plate 207 to drive the round rods 208b and the scraper 208a to move, so that the scraper 208a is always in contact with the top surface of the filter plate 201, thereby increasing the cleaning effect of the scraper 208a on the impurities on the surface of the filter plate 201.

[0040] The specific working principle is: when the gear rod 104 rotates, the two reciprocating screws 202 are driven to rotate through the transmission member 203, and then the movable rod 205 is driven by the reciprocating screw 202 to move along the slide groove 204 and connect the plate 206, the fixed plate 207 and the scraping member 208 to move, so that the impurities on the filter plate 201 are scraped by the scraping member 208, thereby reducing the possibility of blockage of the filter plate 201.

[0041] Example 2, refer to Figure 2-3 In this embodiment, in order to solve the problem of slow mixing of water and reaction reagents in some existing pretreatment devices, based on the same concept as the above-mentioned embodiment 1, the pretreatment device for detecting hexavalent chromium in water also includes:

[0042] The stirring member 102 includes a vertical rod 102a and a plurality of stirring rods 102b. The plurality of stirring rods 102b are arranged in a group of two and are distributed in a ring shape on the vertical rod 102a. The plurality of stirring rods 102b are rotated by the vertical rod 102a to stir the water and the reaction reagent, thereby accelerating the fusion speed of the water and the reaction reagent.

[0043] The gear rod 104 includes a rod body 104a and a second bevel gear 104b. The two ends of the rod body 104a are rotatably plugged into the opposite sides of the two bottom plates 101b respectively. The second bevel gear 104b is fixedly sleeved on the rod body 104a and meshed with the first bevel gear 103. The motor 105 can easily drive the rod body 104a and the second bevel gear 104b to rotate, and then the first bevel gear 103, the vertical rod 102a and the stirring rod 102b are driven to rotate through the second bevel gear 104b to stir the water body and the reaction reagent.

[0044] The specific working principle is: first, the water body to be tested is injected into the processing box 101, and then the impurities in the water body are filtered through the filter plate 201, and the reaction reagent is put into the processing box 101 to mix with the water body, and then the motor 105 drives the gear rod 104 to rotate and drives the first bevel gear 103 and the stirring element 102 to rotate, so that the water body and the reaction reagent are stirred by the stirring element 102, thereby accelerating the mixing speed of the water body and the reaction reagent.

[0045] Example 3, refer to Figure 4 In order to solve the problem of troublesome cleaning of the filter screen in some existing pretreatment devices, based on the same concept as the above-mentioned embodiment 1, the pretreatment device for detecting hexavalent chromium in water also includes:

[0046] A disc 201a is fixedly arranged at the bottom of the filter plate 201, and a plurality of inclined grooves 201b are opened on the bottom surface of the disc 201a along the circumference of the disc 201a. A rotating disk 102c is fixedly sleeved on the upper end of the vertical rod 102a, and a knocking rod 102d is vertically inserted on the rotating disk 102c. A spring 102e is fixedly sleeved on the lower end of the knocking rod 102d. The upper end of the spring 102e is fixedly connected to the bottom surface of the rotating disk 102c. When the vertical rod 102a rotates, the spring 102e is brought into contact with the rotating disk 102c. The movable turntable 102c and the knocking rod 102d rotate, and the spring 102e pulls the knocking rod 102d upward and always contacts the bottom surface of the disc 201a; the upper end of the knocking rod 102d slides with several inclined grooves 201b opened on the bottom surface of the disc 201a in sequence, and when the knocking rod 102d is inserted into the inclined groove 201b, it moves upward quickly and collides with the disc 201a, thereby causing the disc 201a and the filter plate 201 to vibrate.

[0047] The specific working principle is: when the vertical rod 102a rotates, it drives the turntable 102c and the knocking rod 102d to rotate. At this time, the knocking rod 102d is pulled up by the spring 102e and always abuts against the bottom surface of the disc 201a. When the knocking rod 102d is inserted into the inclined groove 201b, it moves up quickly and collides with the disc 201a, thereby causing the disc 201a and the filter plate 201 to vibrate, and at the same time cooperates with the scraping member 208 to clean the impurities on the filter plate 201.

[0048] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A pretreatment device for detecting hexavalent chromium in water. Features: include, A stirring mechanism (100) comprises a processing box (101), a stirring member (102) is rotatably provided at the bottom of the inner wall of the processing box (101), the lower end of the stirring member (102) passes through the processing box (101) and is fixedly provided with a first bevel gear (103), a gear rod (104) is rotatably provided at the bottom of the processing box (101), the gear rod (104) is meshed with the first bevel gear (103), a motor (105) is fixedly provided on the side of the processing box (101), and the rotating shaft of the motor (105) passes through the processing box (101) and is fixedly connected to one end of the gear rod (104); The filtering mechanism (200) comprises a filter plate (201) obliquely arranged in a processing box (101), two reciprocating screw rods (202) are symmetrically arranged at the bottom of the processing box (101) about a gear rod (104), the two reciprocating screw rods (202) are connected to the gear rod (104) by means of a transmission member (203), and two slide grooves (204) are opened upward at the bottom of the processing box (101), and both of the slide grooves (204) are movable. A movable rod (205) is provided, the lower ends of the two movable rods (205) are movably sleeved on the two reciprocating screw rods (202) respectively, the upper ends of the two movable rods (205) are fixedly connected with a connecting plate (206), the lower end of the connecting plate (206) is fixedly connected with a fixed plate (207), and a scraping member (208) is movably provided on the fixed plate (207), and the scraping member (208) is slidably matched with the top surface of the filter plate (201).

2. The pretreatment device for detecting hexavalent chromium in water according to claim 1, Features: The processing box (101) comprises a box body (101a) and two bottom plates (101b), wherein the two bottom plates (101b) are symmetrically arranged at the bottom of the box body (101a), a liquid inlet pipe (101c) is fixedly plugged into the top of the box body (101a), a sealing plate (101d) is hingedly connected to the top of the side of the box body (101a), and a liquid discharge pipe (101e) is fixedly plugged into the bottom of the side of the box body (101a).

3. The pretreatment device for detecting hexavalent chromium in water according to claim 2, Features: The stirring member (102) comprises a vertical rod (102a) and a plurality of stirring rods (102b), wherein the plurality of stirring rods (102b) are grouped in two and are distributed in a ring shape on the vertical rod (102a).

4. The pretreatment device for detecting hexavalent chromium in water according to claim 3, Features: The gear rod (104) comprises a rod body (104a) and a second bevel gear (104b); two ends of the rod body (104a) are respectively rotatably plugged into opposite sides of two bottom plates (101b); the second bevel gear (104b) is fixedly sleeved on the rod body (104a) and meshes with the first bevel gear (103).

5. The pretreatment device for detecting hexavalent chromium in water according to claim 3, Features: A disc (201a) is fixedly arranged at the bottom of the filter plate (201), and a plurality of inclined grooves (201b) are provided on the bottom surface of the disc (201a) along the circumference of the disc (201a). A rotating disc (102c) is fixedly sleeved on the upper end of the vertical rod (102a), and a knocking rod (102d) is vertically inserted on the rotating disc (102c). A spring (102e) is fixedly sleeved on the lower end of the knocking rod (102d), and the upper end of the spring (102e) is fixedly connected to the bottom surface of the rotating disc (102c). The upper end of the knocking rod (102d) is slidably matched with the plurality of inclined grooves (201b) provided on the bottom surface of the disc (201a) in sequence.

6. The pretreatment device for detecting hexavalent chromium in water according to claim 4, Features: The transmission member (203) comprises three transmission wheels (203a) and a transmission chain (203b); the three transmission wheels (203a) are respectively fixedly sleeved on the rod body (104a) and the two reciprocating screw rods (202); and the three transmission wheels (203a) are driven via the transmission chain (203b).

7. The pretreatment device for detecting hexavalent chromium in water according to claim 2, Features: The connecting plate (206) is in a T-shape, the lower end of the connecting plate (206) is fixedly connected to the fixed plate (207), the top surface of the connecting plate (206) is slidably matched with the top surface of the inner wall of the box body (101a), and one end of the cross plate of the connecting plate (206) is fixedly connected to the upper end of the movable plate.

8. The pretreatment device for detecting hexavalent chromium in water according to claim 1, Features: The scraping member (208) comprises a scraper (208a) and two round rods (208b), wherein the two round rods (208b) are symmetrically arranged on the top surface of the scraper (208a), the two round rods (208b) pass through the fixing plate (207) and are fixedly provided with compression springs (208c), and the upper ends of the two compression springs (208c) are respectively fixedly connected to the bottom surfaces of the horizontal plates of the two connecting plates (206).

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