Microbial inspection device for deionized water

Abstract

The invention discloses a microbial inspection device for deionized water. The microbial inspection device comprises a base, a supporting mechanism, a spraying mechanism and a grabbing mechanism, wherein the supporting mechanism is arranged on the base and is used for supporting a filter membrane; the spraying mechanism is arranged on the base and is used for spraying a water sample onto the filter membrane; during working, a filter membrane is placed on the supporting mechanism, deionized water is sprayed on the filter membrane through the spraying mechanism, after spraying is completed, the filter membrane is taken down through the grabbing mechanism, the filter membrane does not need to be taken down manually, the filter membrane cannot be polluted, and the experiment precision is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of deionized water monitoring, in particular to a microbial testing device for deionized water. Background Art

[0002] Deionized water is pure water obtained by removing ionic impurities from water. It is mainly produced by ion exchange resin treatment or RO reverse osmosis. The role and application areas of deionized water include water used in scientific research institutions and corporate laboratories, deionized water and highly deionized water required for processes such as cathode ray tube glass shells, cathode ray tubes, liquid crystal displays, circuit boards, computer hard disks, integrated circuit chips, and single-crystal silicon semiconductors in the electronics industry, water used in chemical industry production processes, deionized water for biopharmaceuticals, water for injection, oral medicines, and artificial dialysis, water used in the beverage industry, deionized water used in the electroplating industry, deionized water used in the battery industry, and deionized water required for steam in thermal and thermal power plants.

[0003] The monitoring items of deionized water mainly include pH, nitrate content, nitrite content, ammonia content, conductivity, oxidizable substances content, non-volatile matter content, heavy metal content, microbial limit, etc. Microbial limit detectors are usually used for microbial detection. However, traditional microbial limit detectors manually take out the filter membrane and place it in a culture dish, which is easy to contaminate the filter membrane and inconvenient to replace the filter membrane. Summary of the invention

[0004] The object of the present invention is to solve the above-mentioned problem and provide a microbial testing device for deionized water, which is convenient for replacing the filter membrane and prevents contamination of the filter membrane during the experiment.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A microbiological testing device for deionized water comprises a base, a supporting mechanism arranged on the base for supporting a filter membrane, a spraying mechanism arranged on the base for spraying a water sample onto the filter membrane, and a grabbing mechanism for grabbing the filter membrane into a culture dish;

[0007] The support mechanism comprises a support pipe arranged on the base, a slide groove arranged at the upper end of the support pipe, and a support sheet arranged in the slide groove and sliding in the slide groove for supporting the filter membrane;

[0008] The spraying mechanism includes a lifting frame arranged on the base and lifted and lowered on the base, a protective cover arranged on the lifting frame, and a hose connected to the protective cover, wherein the upper end of the protective cover is connected to the lifting frame through a buffer mechanism, the lower end of the hose penetrates into the protective cover and is slidably connected between the protective cover, the hose is fixedly connected to the lifting frame, and the supporting sheet moves forward and backward under the action of the linkage mechanism when the lifting frame is lifted and lowered;

[0009] The gripping mechanism includes a fixed frame, a movable plate arranged on the fixed frame and moving on the fixed frame, and a pneumatic clamp arranged on the movable plate and raised and lowered on the movable plate. The fixed frame is provided with a first guide hole, and the first guide hole includes a horizontal portion and downwardly curved arc portions arranged at both ends of the horizontal portion. A through hole is provided on the movable plate, and the pneumatic clamp is provided with a first guide wheel passing through the through hole and cooperating with the first guide hole.

[0010] Furthermore, the support sheet is provided with a support groove matched with the filter membrane, and the inner wall of the support groove is symmetrically provided with a clamping groove.

[0011] Furthermore, rollers are provided on both sides of the support sheet.

[0012] Furthermore, a vertical plate is provided on the base, and a first cylinder for driving the lifting frame to move up and down is provided on the vertical plate.

[0013] Furthermore, the buffer mechanism includes a support plate symmetrically arranged on the outer cylindrical surface of the protective cover, a sleeve arranged on the support plate, and a guide rod arranged on the lifting frame, the lower end of the guide rod penetrates into the sleeve and slides in the sleeve, a compression spring is provided on the guide rod, the upper end of the compression spring contacts the lifting frame, the lower end of the compression spring contacts the upper end of the sleeve, and the lower end of the guide rod is provided with a boss that cooperates with the inner wall of the sleeve.

[0014] Furthermore, the linkage mechanism includes a guide plate arranged on the lifting frame and a fixed rod arranged at the rear end of the support plate, the guide plate is provided with a second guide hole, the upper end of the fixed rod is provided with a second guide wheel cooperating with the second guide hole, and the second guide hole includes an inclined portion inclined downward from the back to the front and a vertical portion arranged at the rear end of the inclined portion.

[0015] Furthermore, a second cylinder for driving the movable plate to move is provided at the front end of the fixing frame.

[0016] Furthermore, a waste water bucket is provided in the base.

[0017] The beneficial effects of the present invention are:

[0018] 1. The present invention comprises a base, a supporting mechanism arranged on the base for supporting a filter membrane, a spraying mechanism arranged on the base for spraying a water sample onto the filter membrane, and a grabbing mechanism for grabbing the filter membrane into a culture dish; when working, the filter membrane is placed on the supporting mechanism, and deionized water is sprayed on the filter membrane by the spraying mechanism. After the spraying is completed, the filter membrane is removed by the grabbing mechanism, and there is no need to remove the filter membrane manually, so the filter membrane will not be contaminated, and the experimental accuracy is guaranteed.

[0019] 2. The support mechanism in the present invention includes a support pipe arranged on the base, a slide groove arranged at the upper end of the support pipe, and a support sheet arranged in the slide groove and sliding in the slide groove for supporting the filter membrane; after the support sheet slides to the front end in the slide groove, it is convenient to place the filter membrane on the support sheet, and then the support sheet moves backward so that the position of the filter membrane corresponds to the position of the spraying mechanism. After the support sheet is moved out, the filter membrane can be replaced, which is easy to operate.

[0020] 3. The buffer mechanism in the present invention includes a support plate symmetrically arranged on the outer cylindrical surface of the protective cover, a sleeve arranged on the support plate, and a guide rod arranged on the lifting frame. The lower end of the guide rod penetrates into the sleeve and slides in the sleeve. The guide rod is provided with a compression spring. The upper end of the compression spring contacts the lifting frame, and the lower end of the compression spring contacts the upper end of the sleeve. The lower end of the guide rod is provided with a boss that matches the inner wall of the sleeve. When the protective cover descends, the lower end of the sleeve first contacts the filter membrane, and then the lifting frame continues to descend. The guide rod overcomes the elastic force of the compression spring and slides downward, ensuring that the protective cover can press the filter membrane and prevent the water sample from leaking from the gap.

[0021] 4. The linkage mechanism in the present invention includes a guide plate arranged on the lifting frame and a fixed rod arranged at the rear end of the support sheet, the guide plate is provided with a second guide hole, the upper end of the fixed rod is provided with a second guide wheel matched with the second guide hole, and the second guide hole includes an inclined portion inclined downward from the back to the front and a vertical portion arranged at the rear end of the inclined portion. When the support sheet is at the front end, the filter sheet is placed on the support sheet, and then the lifting frame descends. Under the action of the inclined portion and the second guide wheel, the support sheet slides backward. After the support sheet moves backward to the right position, the second guide wheel moves to the lowest end of the vertical portion, and then the lifting frame continues to descend, the protective cover continues to descend, and the protective cover presses the filter membrane; when the lifting frame rises, under the action of the vertical portion and the second guide wheel, the protective cover rises first, and then under the action of the inclined portion and the second guide wheel, the support sheet slides forward. The lifting and lowering of the lifting frame and the movement of the support sheet are linked by the mechanical structure, and there is no need to set up two cylinders or motors and other driving mechanisms, which is low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 The structure of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 It is the front view of the present invention;

[0025] Figure 3 The structure of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 4 It is a cross-sectional view of the buffer mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the supporting sheet structure of the present invention.

[0028] In the figure: base 1, supporting pipe 2, slide 3, supporting plate 4, lifting frame 5, protective cover 6, hose 7, fixed frame 8, movable plate 9, pneumatic clamp 10, first guide hole 11, through hole 12, first guide wheel 13, supporting groove 14, card slot 15, roller 16, vertical plate 17, first cylinder 18, supporting plate 19, sleeve 20, guide rod 21, compression spring 22, boss 23, guide plate 24, fixed rod 25, second guide hole 26, second guide wheel 27, second cylinder 28. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] A microbial testing device for deionized water comprises a base 1, a supporting mechanism arranged on the base 1 for supporting a filter membrane, a spraying mechanism arranged on the base 1 for spraying a water sample onto the filter membrane, and a grabbing mechanism for grabbing the filter membrane into a culture dish; when working, the filter membrane is placed on the supporting mechanism, and deionized water is sprayed on the filter membrane by the spraying mechanism. After the spraying is completed, the filter membrane is removed by the grabbing mechanism, and the filter membrane does not need to be removed manually, and the filter membrane will not be contaminated, thereby ensuring the experimental accuracy.

[0031] like Figure 1 and Figure 2 As shown, the support mechanism includes a support pipe 2 arranged on the base 1, a slide groove 3 arranged at the upper end of the support pipe 2, and a support sheet 4 arranged in the slide groove 3 and sliding in the slide groove 3 for supporting the filter membrane; after the support sheet 4 slides to the front end in the slide groove 3, it is convenient to place the filter membrane on the support sheet 4, and then the support sheet 4 moves backward so that the position of the filter membrane corresponds to the position of the spraying mechanism. After the support sheet 4 is moved out, the filter membrane can be replaced, and the operation is convenient.

[0032] like Figure 1As shown, the spraying mechanism includes a lifting frame 5 arranged on the base 1 and lifted and lowered on the base 1, a protective cover 6 arranged on the lifting frame 5 and a hose 7 connected to the protective cover 6. The upper end of the protective cover 6 is connected to the lifting frame 5 through a buffer mechanism, the lower end of the hose 7 penetrates into the protective cover 6 and is slidably connected with the protective cover 6, the hose 7 is fixedly connected to the lifting frame 5, and the support sheet 4 moves forward and backward under the action of the linkage mechanism when the lifting frame 5 is lifted and lowered; after the support sheet 4 moves back into place, the lifting frame 5 drives the protective cover 6 to descend, the lower end of the protective cover 6 presses the filter membrane, and the hose 7 sprays deionized water onto the filter membrane.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, the gripping mechanism includes a fixed frame 8, a movable plate 9 arranged on the fixed frame 8 and moving on the fixed frame 8, and a pneumatic clamp 10 arranged on the movable plate 9 and raised and lowered on the movable plate 9. The movable plate 9 is connected to the fixed frame 8 by a guide rail slider pair, and the pneumatic clamp 10 is connected to the movable plate 9 by a guide rail slider pair. The fixed frame 8 is provided with a first guide hole 11, and the first guide hole 11 includes a horizontal portion and downwardly curved arc portions arranged at both ends of the horizontal portion. The movable plate 9 is provided with a through hole 12, and the pneumatic clamp 10 is provided with a first guide wheel 13 that passes through the through hole 12 and cooperates with the first guide hole 11. When the movable plate 9 moves forward and backward, the pneumatic clamp 10 rises and falls under the action of the first guide wheel 13 and the first guide hole 11. When the movable plate 9 moves to the rearmost end, the pneumatic clamp 10 descends under the action of the arc portion, and the pneumatic clamp 10 clamps the filter membrane. When the movable plate 9 moves to the frontmost end, the pneumatic clamp 10 descends under the action of the arc portion, and the pneumatic clamp 10 releases the filter membrane into the culture dish, thereby realizing the automatic removal of the filter membrane.

[0034] like Figure 5 As shown, the support sheet 4 is provided with a support groove 14 that matches the filter membrane, and the inner wall of the support groove 14 is symmetrically provided with a clamping groove 15. The manipulator goes deep into the clamping groove 15 to facilitate clamping the filter membrane.

[0035] like Figure 5 As shown, rollers 16 are provided on both sides of the support sheet 4, and the rollers 16 can reduce the friction between the support sheet 4 and the slide groove 3, so that the support sheet 4 slides smoothly.

[0036] like Figure 1 As shown, a vertical plate 17 is disposed on the base 1 , and the lifting frame 5 is connected to the vertical plate 17 via a guide rail slider. A first cylinder 18 for driving the lifting frame 5 to move up and down is disposed on the vertical plate 17 .

[0037] like Figure 1 and Figure 4As shown, the buffer mechanism includes a support plate 19 symmetrically arranged on the outer cylindrical surface of the protective cover 6, a sleeve 20 arranged on the support plate 19, and a guide rod 21 arranged on the lifting frame 5. The lower end of the guide rod 21 penetrates into the sleeve 20 and slides in the sleeve 20. A compression spring 22 is provided on the guide rod 21. The upper end of the compression spring 22 contacts the lifting frame 5, and the lower end of the compression spring 22 contacts the upper end of the sleeve 20. The lower end of the guide rod 21 is provided with a boss 23 that matches the inner wall of the sleeve 20. When the protective cover 6 descends, the lower end of the sleeve 20 first contacts the filter membrane, and then the lifting frame continues to descend, and the guide rod 21 overcomes the elastic force of the compression spring 22 and slides downward, ensuring that the protective cover 6 can press the filter membrane and prevent the water sample from leaking from the gap.

[0038] like Figure 1 and Figure 2 As shown, the linkage mechanism includes a guide plate 24 arranged on the lifting frame 5 and a fixing rod 25 arranged at the rear end of the support sheet 4, the guide plate 24 is provided with a second guide hole 26, the upper end of the fixing rod 25 is provided with a second guide wheel 27 matched with the second guide hole 26, and the second guide hole 26 includes an inclined portion inclined downward from the back to the front and a vertical portion arranged at the rear end of the inclined portion. When the support sheet 4 is at the front end, the filter sheet is placed on the support sheet 4, and then the lifting frame 5 is lowered. Under the action of the inclined portion and the second guide wheel 27, the support sheet 4 slides backward. After the support sheet 4 moves back to the position, the second guide wheel 27 moves to the lowest end of the vertical portion, and then the lifting frame 5 continues to descend, and the protective cover 6 continues to descend, and the protective cover 6 presses the filter membrane; when the lifting frame 5 rises, under the action of the vertical portion and the second guide wheel 27, the protective cover 6 first rises, and then under the action of the inclined portion and the second guide wheel 27, the support sheet 4 slides forward. The lifting and lowering of the lifting frame 5 and the movement of the support plate 4 are linked by the mechanical structure, and there is no need to set up two driving mechanisms such as cylinders or motors, so the cost is low.

[0039] By providing the vertical portion, when the lifting frame 5 descends, the support sheet 4 moves into position first, and when the lifting frame 5 rises, the protective cover 6 rises first, ensuring that the protective cover 6 will not interfere with the forward and backward movement of the support sheet 4 when it is raised.

[0040] like Figure 2 As shown, a second cylinder 28 for driving the movable plate 9 to move is disposed at the front end of the fixed frame 8 .

[0041] A waste water bucket is provided in the base 1, and the waste water bucket corresponds to the lower end of the supporting pipe 2, and is used to recover the filtered deionized water.

[0042] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "left", "right", "up", "down", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A microbiological testing device for deionized water, characterized in that: It comprises a base (1), a supporting mechanism arranged on the base (1) for supporting a filter membrane, a spraying mechanism arranged on the base (1) for spraying a water sample onto the filter membrane, and a grabbing mechanism for grabbing the filter membrane into a culture dish; The support mechanism comprises a support pipe (2) arranged on the base (1), a slide groove (3) arranged at the upper end of the support pipe (2), and a support sheet (4) arranged in the slide groove (3) and sliding in the slide groove (3) for supporting the filter membrane; The spraying mechanism comprises a lifting frame (5) arranged on the base (1) and raised and lowered on the base (1), a protective cover (6) arranged on the lifting frame (5), and a hose (7) connected to the protective cover (6); the upper end of the protective cover (6) is connected to the lifting frame (5) through a buffer mechanism; the lower end of the hose (7) penetrates into the protective cover (6) and is slidably connected to the protective cover (6); the hose (7) is fixedly connected to the lifting frame (5); when the lifting frame (5) is raised and lowered, the support sheet (4) moves forward and backward under the action of the linkage mechanism; The gripping mechanism comprises a fixed frame (8), a movable plate (9) arranged on the fixed frame (8) and moving on the fixed frame (8), and a pneumatic clamp (10) arranged on the movable plate (9) and rising and falling on the movable plate (9); the fixed frame (8) is provided with a first guide hole (11), the first guide hole (11) comprises a horizontal portion and downwardly curved arc portions arranged at both ends of the horizontal portion; the movable plate (9) is provided with a through hole (12); and the pneumatic clamp (10) is provided with a first guide wheel (13) passing through the through hole (12) and cooperating with the first guide hole (11).

2. A deionized water microbiological testing device as claimed in claim 1, characterized in that: The support sheet (4) is provided with a support groove (14) matched with the filter membrane, and the inner wall of the support groove (14) is symmetrically provided with a clamping groove (15).

3. A deionized water microbiological testing device as claimed in claim 2, characterized in that: Rollers (16) are provided on both sides of the support sheet (4).

4. A deionized water microbiological testing device as claimed in claim 1, characterized in that: The base (1) is provided with a vertical plate (17), and the vertical plate (17) is provided with a first cylinder (18) for driving the lifting frame (5) to move up and down.

5. A deionized water microbiological testing device as claimed in claim 1, characterized in that: The buffer mechanism comprises a support plate (19) symmetrically arranged on the outer cylindrical surface of the protective cover (6), a sleeve (20) arranged on the support plate (19), and a guide rod (21) arranged on the lifting frame (5); the lower end of the guide rod (21) penetrates into the sleeve (20) and slides in the sleeve (20); a compression spring (22) is provided on the guide rod (21); the upper end of the compression spring (22) contacts the lifting frame (5), the lower end of the compression spring (22) contacts the upper end of the sleeve (20), and the lower end of the guide rod (21) is provided with a boss (23) that matches the inner wall of the sleeve (20).

6. A deionized water microbiological testing device as claimed in claim 1, characterized in that: The linkage mechanism comprises a guide plate (24) arranged on the lifting frame (5) and a fixing rod (25) arranged at the rear end of the support plate (4); a second guide hole (26) is arranged on the guide plate (24); a second guide wheel (27) matched with the second guide hole (26) is arranged at the upper end of the fixing rod (25); the second guide hole (26) comprises an inclined portion inclined downward from the back to the front and a vertical portion arranged at the rear end of the inclined portion.

7. A deionized water microbiological testing device as claimed in claim 1, characterized in that: A second cylinder (28) for driving the movable plate (9) to move is provided at the front end of the fixed frame (8).

8. A deionized water microbiological testing device as claimed in claim 1, characterized in that: A waste water bucket is arranged inside the base (1).

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