Automatic film rolling structure of water quality detector

Abstract

The utility model discloses an automatic film rolling structure of a water quality detector, which comprises a diaphragm capsule support, a diaphragm capsule, a diaphragm capsule fixing transverse plate and a film rolling mechanism, an air cylinder is arranged at the upper end of the diaphragm capsule support, the diaphragm capsule comprises an upper diaphragm capsule and a lower diaphragm capsule which are coaxially arranged, the upper diaphragm capsule is fixedly connected with an air cylinder connecting shaft of the air cylinder, and the lower diaphragm capsule is arranged at the lower end of the diaphragm capsule support. The diaphragm capsule fixing transverse plate is arranged on the diaphragm capsule support, and the diaphragm rolling mechanism is arranged on the diaphragm capsule support. By arranging the diaphragm capsule support and the diaphragm capsule fixing transverse plate, the perpendicularity of the film rolling mechanism and the air cylinder is guaranteed, the assembling thickness of the film rolling mechanism and the air cylinder is reduced, the whole structure is light and thin, when ventilation or water passing is conducted on the diaphragm capsule, bending deformation of the diaphragm capsule support caused by water pressure or air pressure is reduced, and the service life of the diaphragm capsule is prolonged. Under the condition that good concentricity of the diaphragm capsule is maintained, it is guaranteed that the filter paper is not crushed and is good in sealing performance, and stable measurement and automatic switching of the filter paper are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water quality monitoring equipment technical field especially relates to a kind of automatic membrane winding structure of water quality detector. BACKGROUND

[0002] As the core equipment of reverse osmosis pretreatment system, the function of SDI detector is to evaluate the concentration of suspended solids in water by measuring the filter membrane blockage rate, which is widely used in industrial water treatment, environmental monitoring and scientific research.

[0003] In the prior art, the membrane winding mechanism of SDI detector generally has the problems of large size and insufficient stability. To ensure stability under high pressure, thick-walled metal brackets (10mm or more carbon steel) and large-size cylinders are usually used, resulting in a bulky overall size that is difficult to meet the needs of compact equipment. Under the combined impact of 3kg water pressure and 5kg gas pressure, the bracket of the traditional membrane winding structure is prone to bending deformation. The extension length of the transmission shaft of the traditional membrane winding structure generally exceeds 80mm, which is prone to resonance under high pressure. When the amplitude of the transmission shaft reaches 0.2mm, the filter membrane switching process is stuck, resulting in a 30% increase in equipment downtime.

[0004] Therefore, the present utility model is proposed to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of automatic membrane winding structure of water quality detector, to solve the technical problems of the membrane winding mechanism of prior art large size, insufficient stability.

[0006] The technical scheme of the utility model is: a kind of automatic membrane winding structure of water quality detector, comprising:

[0007] Membrane box bracket, the upper end of membrane box bracket is provided with cylinder;

[0008] Membrane box, the membrane box includes coaxially arranged upper membrane box and lower membrane box, the upper membrane box is fixedly connected with the cylinder connecting shaft of cylinder, and the lower membrane box is arranged at the lower end of membrane box bracket;

[0009] Membrane box fixing horizontal plate, membrane box fixing horizontal plate is arranged on membrane box bracket;

[0010] Membrane winding mechanism, membrane winding mechanism is arranged on membrane box bracket.

[0011] Further, the membrane box bracket includes a top plate, a bottom plate and a vertical plate, the vertical plate is vertically arranged, the top plate and the bottom plate are respectively arranged at both ends of the vertical plate in the length direction, the cylinder is arranged at the bottom of the top plate, and the lower membrane box is arranged on the bottom plate.

[0012] Further, the membrane box fixing horizontal plate is arranged on the front side of the vertical plate, and the membrane box fixing horizontal plate is arranged transversely.

[0013] Further, at least two pull rods are arranged between the top plate and the bottom plate, the pull rods are located at the ends of the top plate and the bottom plate away from the vertical plate, the two ends of the pull rods respectively penetrate the top plate and the bottom plate, and the two ends of the pull rods are fixed by tension screws.

[0014] Further, the film winding mechanism comprises four optical shafts arranged in sequence from left to right and capable of rotating;

[0015] The optical shaft at the left end is sleeved with a detachable film roll, the two optical shaft sleeves are arranged on the two optical shafts in the middle, one end of the film roll is sequentially attached to the bottom of the two optical shaft sleeves and wound on the optical shaft at the right end, the central heights of the two optical shafts in the middle are equal, the central heights of the optical shafts at the two ends are greater than the central height of the shafts in the middle, the two optical shaft sleeves are respectively located on the left and right sides of the film box, and the upper film box and the lower film box are respectively located on the upper and lower sides of the film roll between the two optical shaft sleeves.

[0016] Further, the film winding mechanism further comprises a stepping motor, and the stepping motor is fixedly arranged on the film box fixing horizontal plate, the output shaft of the stepping motor penetrates the fixing horizontal plate and is fixedly connected with the optical shaft at the right end.

[0017] Further, the optical shaft is sleeved with a bearing at the end close to the film box fixing horizontal plate, and the bearing has a bearing outer gasket.

[0018] Further, the upper film box and the lower film box are connected with the gas source or the water source through pipelines, and a two-way valve is arranged on the pipeline to switch the flow direction of the gas circuit or the water circuit.

[0019] By adopting the above technical scheme, the utility model has the following beneficial effects:

[0020] 1. The film box support and the film box fixing horizontal plate are arranged, the perpendicularity of the film winding mechanism and the air cylinder is ensured, the assembly thickness of the film winding mechanism and the air cylinder is reduced, the overall structure is lightened and thinned, and the film winding mechanism and the air cylinder are arranged.

[0021] 2. When the film box is ventilated or watered, the bending deformation of the film box support caused by water pressure or air pressure is reduced, the filter paper is not broken and sealed well under the condition of maintaining the good concentricity of the film box, stable measurement and automatic switching of the filter paper are realized. DETAILED DESCRIPTION

[0022] The accompanying drawings are part of the present application and serve to provide a further understanding of the utility model, the schematic embodiments of the utility model and the description thereof serve to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0023] Figure 1The structural diagram of the automatic film winding structure of the water quality detector provided by the embodiment of the present application is shown.

[0024] Fig. 1 is a membrane box support; Fig. 2 is a membrane box fixing horizontal plate; Fig. 3 is an air cylinder; Fig. 4 is an air cylinder connecting shaft; Fig. 5 is an optical axis; Fig. 6 is an optical axis sleeve; Fig. 7 is a film roll; Fig. 8 is a membrane box; Fig. 9 is a stepping motor; Fig. 10 is a pull rod; and Fig. 11 is a tension screw.

[0025] It should be noted that the drawings and the written description are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] The specific embodiments of the present application will be further described in detail with reference to the accompanying drawings.

[0027] Referring to Figure 1 The embodiment of the present application provides an automatic film winding structure of a water quality detector, which comprises a membrane box support 1, a membrane box 8, a membrane box fixing horizontal plate 2 and a film winding mechanism. The upper end of the membrane box support 1 is provided with an air cylinder 3. The membrane box 8 comprises coaxially arranged upper and lower membrane boxes. The upper membrane box is fixedly connected with the air cylinder connecting shaft 4 of the air cylinder 3. The air cylinder 3 is used to drive the upper membrane box to move up and down, so as to complete the connection and separation of the upper and lower membrane boxes. The lower membrane box is arranged at the lower end of the membrane box support 1. The membrane box fixing horizontal plate 2 is arranged on the membrane box support 1. The film winding mechanism is arranged on the membrane box support 1.

[0028] In the above scheme, the membrane box support 1 and the membrane box fixing horizontal plate 2 are arranged to ensure the perpendicularity of the film winding mechanism and the air cylinder 3, reduce the assembly thickness of the film winding mechanism and the air cylinder 3, realize the lightness and thinness of the overall structure, reduce the bending deformation of the membrane box support 1 caused by water pressure or air pressure when the membrane box 8 is ventilated or water is passed, ensure that the filter paper is not broken and sealed well under the condition of maintaining the good concentricity of the membrane box 8, realize stable measurement and automatic switching of the filter paper.

[0029] In some possible implementation schemes, referring to Figure 1 The membrane box support 1 comprises a top plate, a bottom plate and a vertical plate. The vertical plate is vertically arranged. The top plate and the bottom plate are respectively arranged at the two ends of the vertical plate in the length direction. The air cylinder 3 is arranged at the bottom of the top plate. The lower membrane box is arranged on the bottom plate.

[0030] In some possible implementation schemes, referring to Figure 1 The membrane box fixing horizontal plate 2 is arranged on the front side of the vertical plate. The membrane box fixing horizontal plate 2 is arranged transversely. The width direction of the membrane box fixing horizontal plate 2 is perpendicular to the bottom plate, so as to reduce the assembly thickness of the membrane box fixing horizontal plate 2 and the membrane box support 1.

[0031] In some possible implementation schemes, referring to Figure 1As shown, at least two tie rods 10 are provided between the top plate and the bottom plate. The tie rods 10 are located at the ends of the top plate and the bottom plate away from the vertical plate. The two ends of the tie rods 10 pass through the top plate and the bottom plate respectively, and both ends of the tie rods 10 are fixed by tension screws 11.

[0032] In the above scheme, the tie rod 10 improves the overall structural strength of the membrane box support 1, prevents the membrane box support 1 from bending and deforming when the membrane box 8 is ventilated or irrigated, prevents the filter paper from being crushed, and also ensures the coaxiality of the membrane box 8, ensuring the sealing of the membrane box 8, realizing stable measurement and automatic switching of filter paper. The tie rod 10 applies a pulling force to the top plate and the bottom plate in both vertical and horizontal directions, ensuring the flatness and concentricity of the upper and lower membrane boxes.

[0033] See some possible implementations. Figure 1 As shown, the film winding mechanism includes four rotatable optical shafts 5 arranged sequentially from left to right. A detachable membrane roll 7 (filter paper roll) is fitted onto the left optical shaft 5. Optical shaft sleeves 6 are fitted onto the two middle optical shafts 5. One end of the membrane roll 7 is successively attached to the bottom of the two optical shaft sleeves 6 and wound around the rightmost optical shaft 5. The center heights of the two middle optical shafts 5 are equal, while the center heights of the optical shafts 5 at both ends are greater than the center height of the middle shaft 5. The two optical shaft sleeves 6 are located on the left and right sides of the membrane box 8, respectively. The upper and lower membrane boxes are located on the upper and lower sides of the membrane roll 7 between the two optical shaft sleeves 6, respectively. The film winding mechanism also includes a stepper motor 9, which is fixedly mounted on the membrane box fixing plate 2. The output shaft of the stepper motor 9 passes through the fixing plate 2 and is fixedly connected to the rightmost optical shaft 5.

[0034] In the above scheme, when the filter paper is replaced, the stepper motor 9 is started. The start of the stepper motor 9 drives the rightmost optical shaft 5 to rotate through its output end. The rotation of the rightmost optical shaft 5 drives the filter paper to move, thereby causing the filter paper between the two optical shaft sleeves 6 to move. When the upper membrane box and the lower membrane box are pressed together, sewage is introduced into the upper membrane box and the lower membrane box to detect the sewage.

[0035] See some possible implementations. Figure 1 As shown, a bearing is fitted on one end of the optical axis 5 near the membrane box fixing plate 2. The bearing has an outer bearing washer and is embedded in the membrane box fixing plate 2. This reduces the extension length of the optical axis 5, lowers the installation depth requirement of the optical axis sleeve 6, and reduces the downward stroke of the filter paper when it is pressed by the four horizontally arranged optical axes 5, thus reducing the possibility of breakage. The function of the bearing and the optical axis 5 is to prevent the filter paper from sticking to the upper and lower membrane boxes due to excessive pressing time when the upper membrane box is lifted, thus preventing the filter paper from being torn when it moves and ensuring that the filter paper will not break when it moves after being soaked in water for a long time.

[0036] See some possible implementations.Figure 1 As shown, the upper membrane box and the lower membrane box are connected with the gas source or the water source through pipelines, and a two-way valve is arranged on the pipeline to switch the flow direction of the gas path or the water path.

[0037] In the above scheme, the upper membrane box and the lower membrane box have cavities, and the two cavities are communicated when the upper membrane box and the lower membrane box abut, and the upper membrane box and the lower membrane box are connected with the same gas source or water source, and the water is used for detecting sewage, and after the detection of the sewage is completed, in order not to affect the next use, air is introduced into the upper membrane box and the lower membrane box, and the sewage in the upper membrane box and the lower membrane box is drained.

[0038] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and those skilled in the art can make modifications to the embodiment without creative contribution according to the needs after reading the specification, but as long as it is within the protection scope of the utility model, it is protected by the patent law.

Claims

1. An automatic film winding structure of a water quality detector, characterized in that, The utility model relates to a film box fixing device, including: Membrane box support (1), the upper end of membrane box support (1) is equipped with air cylinder (3); Membrane box (8), membrane box (8) includes coaxial upper membrane box and lower membrane box, upper membrane box is fixedly connected with air cylinder connecting shaft (4) of air cylinder (3), and lower membrane box is arranged at the lower end of membrane box support (1); Membrane box fixed horizontal plate (2), membrane box fixed horizontal plate (2) is arranged on membrane box support (1); Rolling film mechanism, rolling film mechanism is arranged on membrane box support (1).

2. The automatic film winding structure of the water quality detector according to claim 1, characterized in that, The membrane box support (1) includes a top plate, a bottom plate, and a vertical plate. The vertical plate is vertically arranged. The top plate and the bottom plate are respectively arranged vertically at both ends of the length direction of the vertical plate. The air cylinder (3) is arranged at the bottom of the top plate. The lower membrane box is arranged on the bottom plate.

3. The automatic film winding structure of the water quality detector according to claim 2, characterized in that, The membrane box fixed horizontal plate (2) is arranged on the front side of the vertical plate, and the membrane box fixed horizontal plate (2) is arranged transversely.

4. The automatic film rolling structure of the water quality detector according to claim 2, characterized in that, At least two draw bars (10) are arranged between the top plate and the bottom plate. The draw bars (10) are located at one end of the top plate and the bottom plate away from the vertical plate. The two ends of the draw bar (10) respectively penetrate the top plate and the bottom plate, and the two ends of the draw bar (10) are fixed by tension screws (11).

5. The automatic film rolling structure of the water quality detector according to claim 1, characterized in that, The rolling film mechanism includes four optical axes (5) arranged in order from left to right. The left end of the optical axis (5) is sleeved with a detachable film roll (7). The middle two optical axes (5) are each sleeved with an optical axis sleeve (6). One end of the film roll (7) is sequentially attached to the bottom of the two optical axis sleeves (6) and wound on the rightmost optical axis (5). The center heights of the middle two optical axes (5) are equal. The center heights of the two ends of the optical axis (5) are greater than the center height of the middle axis (5). The two optical axis sleeves (6) are respectively located on the left and right sides of the membrane box (8). The upper membrane box and the lower membrane box are respectively located on the upper and lower sides of the film roll (7) between the two optical axis sleeves (6).

6. The automatic film winding structure of the water quality detector according to claim 5, characterized in that, The rolling film mechanism further includes a stepping motor (9) fixedly arranged on the membrane box fixed horizontal plate (2). The output shaft of the stepping motor (9) penetrates the fixed horizontal plate (2) and is fixedly connected with the rightmost optical axis (5).

7. The automatic film winding structure of the water quality detector according to claim 6, characterized in that, The optical axis (5) is sleeved with a bearing near one end of the membrane box fixed horizontal plate (2). The bearing has a bearing outer washer.

8. The automatic film rolling structure of the water quality detector according to claim 1, characterized in that, The upper membrane box and the lower membrane box are connected in communication with a gas source or a water source through a pipeline. A two-way valve is arranged on the pipeline to switch the flow direction of the gas path or the water path.

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