Dustproof structure for automatic polarimeter

Abstract

The utility model discloses a dustproof structure for an automatic polarimeter, and aims to solve the technical problem that in the prior art, dust is easy to penetrate through a gap of a cabin cover to enter a sample pool, and the instrument is easy to interfere in the detection process. Comprising a polarimeter body, a placement groove is formed in the surface of the polarimeter body, a hatch cover is movably connected in the placement groove, two cavities are formed in the hatch cover and are a transmission cavity and a compression cavity respectively, and a first sealing air bag is fixedly connected to the position, close to the bottom face, of the side wall of the hatch cover. The end face of the bottom of the hatch cover is fixedly connected with a first sealing air bag, the end face of the bottom of the hatch cover is fixedly connected with a second sealing air bag, the first sealing air bag and the second sealing air bag abut against the side wall of the containing groove, and an inflation assembly is arranged in the compression cavity. And dust is prevented from entering the sample cell.

Description

TECHNICAL FIELD

[0001] The utility model belongs to automatic polarimeter technical field, and specifically relates to a dustproof structure for automatic polarimeter. BACKGROUND

[0002] Automatic polarimeter is the instrument for determining the optical rotation of matter. Optical rotation refers to the rotation of the plane of polarized light by certain substances (such as optical active substances such as sugars, drug molecules) passing through it. The angle of rotation is the optical rotation. Its principle is based on Fresnel formula and Beer's law. The optical rotation is calculated by measuring the rotation angle of the sample to the polarized light, and then the concentration, content, purity and other properties of the substance are analyzed.

[0003] However, the existing polarimeter, whether in use or not in use, the cover structure arranged on the sample cell is directly covered on the notch position, the sealing performance of the sample cell to the external environment is poor, dust is easy to enter the sample cell through the gap of the cover, and the instrument is easy to be interfered in the detection process, which affects the detection effect and data accuracy.

[0004] Therefore, a dustproof structure for automatic polarimeter is designed to change the above technical defects. CONTENT OF THE UTILITY MODEL

[0005] (1) Technical problem to be solved

[0006] In view of the defects of the prior art, the purpose of the utility model is to provide a dustproof structure for automatic polarimeter, which aims at solving the technical problem that dust is easy to enter the sample cell through the gap of the cover in the prior art, and the instrument is easy to be interfered in the detection process.

[0007] (2) Technical scheme

[0008] In order to solve the above technical problems, the utility model provides a dustproof structure for automatic polarimeter, which comprises a polarimeter main body, a placing groove is formed on the surface of the polarimeter main body, a cover is movably connected in the placing groove, two cavities are formed in the cover, the two cavities are respectively a transmission cavity and a compression cavity, a first sealing air bag is fixedly connected to the side wall of the cover close to the bottom surface, a second sealing air bag is fixedly connected to the bottom end surface of the cover, the first sealing air bag and the second sealing air bag are in contact with the side wall of the placing groove, and a gas charging assembly is arranged in the compression cavity.

[0009] Further, the gas charging assembly comprises a lead screw rotatably connected in the compression cavity, a screw sleeve is threadedly connected to the side wall of the lead screw, a push plate is fixedly connected to the side wall of the screw sleeve, the push plate is in contact with the side wall of the compression cavity, one end of the lead screw extends into the transmission cavity and is provided with a transmission assembly;

[0010] The compression cavity side wall is provided with two air outlet holes, the two air outlet holes are communicated with the first sealing air bag and the second sealing air bag respectively, the compression cavity side wall is also provided with an air inlet hole, and the air outlet hole and the air inlet hole side wall are respectively provided with a one-way valve.

[0011] Further, the transmission assembly comprises a worm wheel fixedly connected to the end face of the lead screw, the transmission cavity side wall is rotationally connected with a worm, the worm is engaged with the worm wheel, and the top end of the worm penetrates through the hatch and is fixedly connected with a rotating rod.

[0012] Further, the rotating rod side wall is provided with anti-skid lines.

[0013] Further, the push plate side wall is fixedly connected with a sealing ring.

[0014] Further, the placing groove side wall is provided with a sealing groove, and the first sealing air bag and the second sealing air bag are matched with the sealing groove.

[0015] (3) beneficial effects

[0016] Compared with the prior art, the beneficial effects of the present application are as follows:

[0017] The present application comprises a polarimeter main body, a hatch, a first sealing air bag, a second sealing air bag and an inflation assembly, the first sealing air bag and the second sealing air bag are inflated during the detection process or in the unused state, the contact surface between the first sealing air bag and the second sealing air bag and the sealing groove is increased, dust is prevented from entering the sample pool, and the dustproof effect is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the present application;

[0019] Figure 2 It is a structure schematic view of the placing groove of the present application;

[0020] Figure 3 It is a perspective view of the hatch of the present application;

[0021] Figure 4 It is a sectional structure schematic view of the hatch of the present application;

[0022] Figure 5 It is a structure schematic view of the transmission assembly of the present application.

[0023] The marks in the drawings are as follows: 1, polarimeter main body; 2, placing groove; 3, hatch; 4, cavity; 5, second sealing air bag; 6, second sealing air bag; 7, lead screw; 8, screw sleeve; 9, push plate; 10, worm wheel; 11, worm; 12, rotating rod; 13, sealing groove; 14, air outlet hole; 15, air inlet hole; 16, one-way valve; 17, sealing ring. DETAILED DESCRIPTION

[0024] The specific embodiment is a dustproof structure for an automatic polarimeter, a structural schematic diagram of which is shown in the figure Figures 1-5 The dustproof structure for an automatic polarimeter comprises a polarimeter main body 1, a placing groove 2 is formed on the surface of the polarimeter main body 1, a hatch 3 is movably connected in the placing groove 2, two cavities 4 are formed in the hatch 3, the two cavities 4 are respectively a transmission cavity and a compression cavity, a first sealing air bag 5 is fixedly connected to the side wall of the hatch 3 close to the bottom surface, a second sealing air bag 6 is fixedly connected to the bottom end surface of the hatch 3, the first sealing air bag 5 and the second sealing air bag 6 are in abutment with the side wall of the placing groove 2, and an inflation assembly is arranged in the compression cavity.

[0025] As shown in the figures Figure 3 and Figure 5 The inflation assembly comprises a lead screw 7 rotatably connected in the compression cavity, a threaded sleeve 8 is threadedly connected to the side wall of the lead screw 7, a push plate 9 is fixedly connected to the side wall of the threaded sleeve 8, the push plate 9 is in abutment with the side wall of the compression cavity, and a transmission assembly is arranged at one end of the lead screw 7 extending into the transmission cavity;

[0026] Two air outlet holes 14 are formed in the side wall of the compression cavity, the two air outlet holes 14 are respectively in communication with the first sealing air bag 5 and the second sealing air bag 6, an air inlet hole 15 is further formed in the side wall of the compression cavity, and a one-way valve 16 is respectively mounted to the side wall of the air outlet hole 14 and the air inlet hole 15.

[0027] The transmission assembly comprises a worm wheel 10 fixedly connected to the end surface of the lead screw 7, a worm gear 11 rotatably connected to the side wall of the transmission cavity, the worm gear 11 is in mesh with the worm wheel 10, and a rotating rod 12 is fixedly connected to the top end of the worm gear 11 penetrating through the hatch 3. The transmission mode of the worm wheel 10 and the worm gear 11 can avoid the reverse rotation of the lead screw 7 after inflation, thereby affecting the air sealing effect.

[0028] When the rotating rod 12 is rotated, it needs to be rotated quickly, so as to drive the lead screw 7 to rotate quickly, the push plate 9 can be quickly moved, the air can be quickly compressed, and the quick inflation operation can be realized; after single use, if it is used again, the rotating rod 12 needs to be reversely rotated to drive the push plate 9 to reset, so as to be used again next time.

[0029] Anti-skid lines are formed in the side wall of the rotating rod 12. The anti-skid lines can increase the friction between the rotating rod 12 and the hands, so as to achieve the purpose of quick rotation.

[0030] As shown in the figure Figure 5 A sealing ring 17 is fixedly connected to the side wall of the push plate 9. The sealing ring 17 can increase the sealing between the push plate 9 and the side wall of the compression cavity, so that the air flow can be discharged from the air outlet hole 14, thereby improving the utilization rate of the air.

[0031] As shown in the figure Figure 2As shown, the sidewall of the placing groove 2 is provided with a sealing groove 13, and the first sealing air bag 5 and the second sealing air bag 6 are matched with the sealing groove 13. When the first sealing air bag 5 and the second sealing air bag 6 are inflated, they can be filled in the sealing groove 13, for increasing the sealing between the placing groove 2, thereby improving the dustproof effect.

[0032] Working principle: after the hatch cover 3 is closed, the rotating rod 12 is quickly rotated, the rotating rod 12 drives the worm 11 to rotate quickly, the worm 11 engages the worm gear 10 to drive the lead screw 7 to rotate, the lead screw 7 drives the push plate 9 to move through the screw sleeve 8, the push plate 9 compresses the air in the compression cavity, the air enters the first sealing air bag 5 and the second sealing air bag 6 through the air outlet hole 14, for inflation, increasing the contact stability of the first sealing air bag 5 and the second sealing air bag 6 and the sealing ring 17, and the first sealing air bag 5 and the second sealing air bag 6 can realize the purpose of double dustproof, effectively improving the dustproof effect.

[0033] All the technical features in the embodiment can be freely combined according to actual needs.

[0034] The above embodiment is a preferred implementation scheme of the utility model, in addition, the utility model can be realized in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.

Claims

1. A dustproof structure for an automatic polarimeter, comprising a polarimeter main body (1), a placing groove (2) is formed on the surface of the polarimeter main body (1), and a hatch (3) is movably connected in the placing groove (2), characterized in that: The cabin cover (3) is internally provided with two cavities (4), the two cavities (4) are transmission cavity and compression cavity respectively, the first sealing air bag (5) is fixedly connected to the side wall of the cabin cover (3) close to the bottom surface, the second sealing air bag (6) is fixedly connected to the bottom end surface of the cabin cover (3), the first sealing air bag (5) and the second sealing air bag (6) are in abutment with the side wall of the placing groove (2), and the compression cavity is provided with an inflation assembly.

2. The dustproof structure for an automatic polarimeter according to claim 1, wherein: The inflation assembly comprises a lead screw (7) rotatably connected in the compression cavity, a sleeve (8) is threadedly connected to the side wall of the lead screw (7), the sleeve (8) is fixedly connected with a push plate (9), the push plate (9) is in abutment with the side wall of the compression cavity, one end of the lead screw (7) extends into the transmission cavity and is provided with a transmission assembly. The side wall of the compression cavity is provided with two air outlet holes (14), the two air outlet holes (14) are in communication with the first sealing air bag (5) and the second sealing air bag (6) respectively, and the side wall of the compression cavity is also provided with an air inlet hole (15); the side walls of the air outlet holes (14) and the air inlet hole (15) are respectively provided with one-way valves (16).

3. The dust-proof structure for an automatic polarimeter according to claim 2, wherein: The transmission assembly comprises a worm wheel (10) fixedly connected to the end surface of the lead screw (7), the transmission cavity is rotatably connected with a worm (11), the worm (11) is in mesh with the worm wheel (10), and the top end of the worm (11) penetrates through the cabin cover (3) and is fixedly connected with a rotating rod (12).

4. The dustproof structure for an automatic polarimeter according to claim 3, wherein: The side wall of the rotating rod (12) is provided with anti-skid lines.

5. The dust-proof structure for an automatic polarimeter according to claim 2, wherein: The side wall of the push plate (9) is fixedly connected with a sealing ring (17).

6. The dust-proof structure for an automatic polarimeter according to claim 1, wherein: The side wall of the placing groove (2) is provided with a sealing groove (13), and the first sealing air bag (5) and the second sealing air bag (6) are matched with the sealing groove (13).

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