Sample clamping device for oxygen index tester

Abstract

The utility model relates to the technical field of oxygen index testers, and discloses a sample clamping device for an oxygen index tester, which comprises a tester body, the top end face of the tester body is fixedly connected with a tube seat, and the top end face of the tube seat is provided with a clamping component. According to the sample clamping device for the oxygen index tester, the knob is rotated to enable the two groups of elastic clamping pieces to move oppositely, so that an object is clamped, when the object is in a flexible and pierceable form, the elastic clamping pieces can pierce into the bottom of the object to be tested, then the knob is rotated reversely, the elastic clamping pieces naturally move back to back through elasticity, and the object to be tested is clamped. The elastic clamping piece supports an object to be measured in the object, the clamping piece forms a structural supporting force in a sample, the sample can be stably suspended in a combustion test, the outer surface of the sample cannot be covered, uniform contact of flames is ensured, and the consistency and repeatability of an oxygen index test are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oxygen index tester, specifically to a sample clamping device for oxygen index tester. BACKGROUND

[0002] The digital display oxygen index tester is used for measuring the combustion performance of various textiles including woven, knitted and non-woven fabrics, and can also be used for measuring the combustion performance of plastics, rubbers and papers.

[0003] According to a digital display oxygen index tester (announcement number: CN221572452U) disclosed, the above-mentioned application includes a base, a tester and a burning part are arranged on the base, the burning part includes a pipe seat fixedly connected with the base, an oxygen supply pipe is fixedly connected in the pipe seat, a fixed clamp is movably arranged on the oxygen supply pipe, and a glass tube is slidably sleeved on the pipe seat.

[0004] The tester needs to fix the measured object by the fixed clamp, but the fixed clamp cannot be adjusted and can only be applied to samples of specific size and shape. When the sample size is slightly larger or smaller, it cannot be clamped, resulting in sample sliding or falling off during testing, and irregular shape or soft material cannot be clamped, reducing the testing stability. In view of this, we propose a sample clamping device for oxygen index tester. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a sample clamping device for oxygen index tester to solve the problems in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a sample clamping device for oxygen index tester, including tester body, the top end surface of tester body is fixedly connected with pipe seat, the top end surface of pipe seat is provided with clamping assembly, the clamping assembly includes:

[0007] Support, the top end surface of support is fixedly connected with elastic clamping piece, the side wall of elastic clamping piece is inserted with nut, and the nut is threadedly connected with screw rod;

[0008] Frame body, the top of frame body is fixedly connected with clamping piece, the clamping piece is inserted with rotating seat, the top end surface of rotating seat is fixedly connected with rotating seat, and the top end surface of rotating seat is fixedly connected with spiral stab piece.

[0009] Preferably, the top end surface of pipe seat is sleeved with transparent tube, the top end surface of transparent tube is inserted with filter, and the inner bottom surface of pipe seat is fixedly connected with oxygen supply pipe.

[0010] Preferably, the support is inserted into the top end face of the pipe base, and the number of the elastic clamping pieces is provided with two groups, and the two groups of elastic clamping pieces are symmetrically arranged on the top end face of the support.

[0011] Preferably, the end face of the screw rod is fixedly connected with a knob, the knob is movably connected with the side wall of the elastic clamping piece, the knob is rotated to rotate the screw rod, and then the spacing of the two groups of elastic clamping pieces is adjusted.

[0012] Preferably, the frame body is fixedly connected to the top end face of the support, and the bottom end face of the rotating seat is movably connected to the top end face of the frame body.

[0013] Preferably, the side wall of the rotating seat is provided with vertical grooves, and the number of the vertical grooves is provided with several groups, and the several groups of vertical grooves are equidistantly arranged on the side wall of the rotating seat, and the vertical grooves improve the friction between the hands of the operator and the side wall of the rotating seat, and then the operator manually rotates the rotating seat.

[0014] Preferably, the elastic clamping piece is fixedly connected with a barb on one side close to the spiral stabbing piece, and the number of the barb is provided with several groups, and the several groups of barbs are equidistantly arranged.

[0015] Compared with the prior art, the utility model provides a kind of sample clamping device for oxygen index tester, with the following beneficial effects:

[0016] 1, the sample clamping device for oxygen index tester, by setting up clamping component, rotating knob, two groups of elastic clamping pieces are moved towards each other, realize the clamping of article, when article is flexible and can be stabbed into the form, elastic clamping piece can be stabbed into the bottom of the measured article, then reverse rotation knob, elastic clamping piece moves back naturally by elasticity, elastic clamping piece props up the measured object in object, and the structure support force is formed in the sample inside the clamping piece, can keep sample stable suspension in combustion test, ensure that flame is evenly contacted, improve the consistency and repeatability of oxygen index test, it is favorable to obtain more accurate oxygen index reading, spiral stabbing piece gradually spirally embeds inside sample during rotation process, with stronger anchoring force, can firmly fix flexible or loose structure sample, prevent shaking or falling in test.

[0017] 2, the sample clamping device for oxygen index tester, by setting up barb, when clamping outside measured article, barb forms multiple anchor points between clamping piece and sample, improves the friction of contact surface, prevents slipping due to insufficient friction, and guarantees test stability. ACCURACY

[0018] Figure 1 It is the main body structure schematic diagram of the utility model;

[0019] Figure 2 It is the clamping component structure schematic diagram of the utility model;

[0020] Figure 3 It is the elastic clamping sheet structure schematic view of the utility model;

[0021] Figure 4 It is the utility model Figure 3 It is the A area structure schematic view of the utility model;

[0022] Figure 5 It is the utility model frame body explosion view;

[0023] Figure 6 It is the utility model Figure 5 It is the B area structure schematic view of the utility model.

[0024] In the figure: 1, the measuring instrument body; 2, the pipe seat; 3, the transparent tube; 4, the filter; 5, the clamping assembly; 501, the support; 502, the elastic clamping sheet; 503, the nut; 505, the screw rod; 506, the knob; 507, the frame body; 508, the clamping sheet; 509, the rotating seat; 510, the rotating seat; 511, the spiral pricking sheet; 6, the oxygen supply pipe; 7, the barb. DETAILED DESCRIPTION

[0025] As Figures 1-6 shown, the utility model provides a technical scheme: a kind of sample clamping device for oxygen index measuring instrument, including measuring instrument body 1, the top end surface of measuring instrument body 1 is fixedly connected with pipe seat 2, the top end surface of pipe seat 2 is provided with clamping assembly 5, clamping assembly 5 includes support 501, elastic clamping sheet 502, nut 503, screw rod 505, knob 506, frame body 507, clamping sheet 508, rotating seat 509, rotating seat 510, spiral pricking sheet 511.

[0026] In an embodiment of the utility model, support 501 is inserted in the top end surface of pipe seat 2, the top end surface of support 501 is fixedly connected with elastic clamping sheet 502, the quantity of elastic clamping sheet 502 is provided with two groups, two groups of elastic clamping sheet 502 are symmetrically arranged on the top end surface of support 501, the side wall of elastic clamping sheet 502 is inserted with nut 503, nut 503 is in screw thread connection with screw rod 505, the end surface of screw rod 505 is fixedly connected with knob 506, knob 506 is movably connected with the side wall of elastic clamping sheet 502, rotating knob 506, so that screw rod 505 rotates, and then the distance of two groups of elastic clamping sheet 502 is adjusted.

[0027] The frame body 507 is fixedly connected to the top end face of the support 501, the top of the frame body 507 is fixedly connected with a clamping sheet 508, the clamping sheet 508 is inserted with a rotating seat 509, the bottom end face of the rotating seat 509 is movably connected with the top end face of the frame body 507, the top end face of the rotating seat 509 is fixedly connected with a rotating seat 510, the side wall of the rotating seat 510 is provided with a vertical slot, a plurality of groups of vertical slots are arranged at the side wall of the rotating seat 510 at equal intervals, the vertical slot improves the friction between the operator's hand and the side wall of the rotating seat 510, thereby facilitating the manual rotation of the rotating seat 510, and the top end face of the rotating seat 510 is fixedly connected with a spiral piercing sheet 511.

[0028] The top end face of the pipe seat 2 is sleeved with a transparent pipe 3, the top end face of the transparent pipe 3 is inserted with a filter 4, and the inner bottom surface of the pipe seat 2 is fixedly connected with an oxygen supply pipe 6.

[0029] The to-be-measured object is placed between the two groups of elastic clamping sheets 502, and then the knob 506 is rotated to drive the screw rod 505 to rotate, so that the two groups of elastic clamping sheets 502 move towards each other to clamp the object, when the object is flexible and can be pierced, the elastic clamping sheet 502 can be pierced into the bottom of the to-be-measured object, and then the knob 506 is reversely rotated to release the elastic clamping sheet 502, the elastic clamping sheet 502 loses the limiting of the screw rod 505, so that the elastic clamping sheet 502 naturally moves away, the elastic clamping sheet 502 supports the to-be-measured object inside the object, the clamping sheet forms a structural support force inside the sample, can keep the sample stable during the combustion test, the elastic clamping sheet 502 is supported inside the sample and does not cover the outer surface of the sample, which is beneficial to ensure that the flame uniformly contacts and improve the consistency and repeatability of the oxygen index test, and is beneficial to obtain more accurate oxygen index readings.

[0030] By rotating the rotating seat 510, the spiral piercing sheet 511 is inserted into the to-be-measured object, and the spiral piercing sheet 511 gradually spirally embeds into the inside of the sample during the rotation process, compared with the traditional straight insertion type, has stronger anchoring force, can firmly fix the sample of flexible or loose structure, such as foam, soft plastic material, etc., and prevent shaking or falling during the test.

[0031] In addition, the side of the elastic clamping sheet 502 close to the spiral piercing sheet 511 is fixedly connected with a barb 7, a plurality of groups of barbs 7 are arranged at equal intervals, when the to-be-measured object is clamped outside, the barb 7 forms a plurality of anchor points between the clamping sheet and the sample, improves the friction of the contact surface, is especially effective for smooth, soft or surface-coated samples, such as plastic film, fabric, foam, etc., prevents slipping due to insufficient friction, and ensures test stability.

[0032] In the utility model, when using, the measured article is placed between the two groups of elastic clamping pieces 502, then knob 506 is rotated, screw rod 505 is driven to rotate, two groups of elastic clamping pieces 502 move towards each other, the clamping of the article is realized, when the article is flexible and can be pierced, elastic clamping piece 502 can be pierced into the bottom of the measured article, then knob 506 is reversely rotated, elastic clamping piece 502 is released, elastic clamping piece 502 loses the limiting of screw rod 505, elastic clamping piece 502 naturally moves away, elastic clamping piece 502 supports the measured article inside the object, elastic clamping piece 502 supports inside the sample, does not cover the outer surface of the sample, is favorable for ensuring that the flame is uniformly contacted, rotating rotary seat 510 drives helical piercing piece 511 to insert into the measured article, helical piercing piece 511 gradually helically embeds inside the sample in the rotating process, compared with the traditional straight insertion type, has stronger anchoring force, can firmly fix the sample of flexible or loose structure, prevents shaking or falling in testing.

[0033] The above has made detailed description to the utility model, but on the basis of the utility model, some modifications or improvements can be made, which is obvious to the general skilled in the art. Therefore, the modification or improvement without departing from the spirit of the utility model is within the protection scope of the utility model.

Claims

1. A sample clamping device for an oxygen index tester, comprising a tester body (1), a pipe base (2) is fixedly connected to the top end face of the tester body (1), characterized in that: The top end surface of the pipe seat (2) is provided with a clamping assembly (5), the clamping assembly (5) comprises: The top end surface of the support (501) is fixedly connected with elastic clamping pieces (502), the side wall of the elastic clamping piece (502) is inserted with a nut (503), the nut (503) is threadedly connected with a screw rod (505); The top of the frame body (507) is fixedly connected with a clamping piece (508), the clamping piece (508) is inserted with a rotating seat (509), the top end surface of the rotating seat (509) is fixedly connected with a rotating seat (510), and the top end surface of the rotating seat (510) is fixedly connected with a spiral stab piece (511).

2. A sample clamping device for an oxygen index tester according to claim 1, characterized in that: The top end surface of the pipe seat (2) is sleeved with a transparent tube (3), the top end surface of the transparent tube (3) is inserted with a filter (4), and the inner bottom surface of the pipe seat (2) is fixedly connected with an oxygen supply pipe (6).

3. A sample clamping device for an oxygen index tester according to claim 1, characterized in that: The support (501) is inserted into the top end surface of the pipe seat (2), the number of the elastic clamping pieces (502) is two groups, and the two groups of elastic clamping pieces (502) are symmetrically arranged on the top end surface of the support (501).

4. A sample clamping device for an oxygen index tester according to claim 1, characterized in that: The end surface of the screw rod (505) is fixedly connected with a knob (506), and the knob (506) is movably connected with the side wall of the elastic clamping piece (502).

5. A sample clamping device for an oxygen index tester according to claim 1, characterized in that: The frame body (507) is fixedly connected to the top end surface of the support (501), and the bottom end surface of the rotating seat (509) is movably connected with the top end surface of the frame body (507).

6. A sample clamping device for an oxygen index tester according to claim 1, characterized in that: The side wall of the rotating seat (510) is provided with a vertical groove, the number of the vertical grooves is several groups, and the several groups of vertical grooves are equally spaced on the side wall of the rotating seat (510).

7. A sample clamping device for an oxygen index tester according to claim 1, characterized in that: The side of the elastic clamping piece (502) close to the spiral stab piece (511) is fixedly connected with a barb (7), the number of the barbs (7) is several groups, and the several groups of barbs (7) are equally spaced.

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