A glass capillary fixture for viscosity measurement

Abstract

The present invention discloses a glass capillary fixture for viscosity measurement, and relates to the technical field of glass capillary fixtures. The present invention comprises a disk body, a mounting seat and a capillary, wherein a circular hole and a stepped hole are provided on the disk body, the mounting seat comprises a shell, a liquid discharge port connected to chamber one is provided on the peripheral side of the shell, a limit block is provided in chamber two, a light hole corresponding to the mounting hole is provided on the limit block, a channel is provided in the limit block, the light hole is separated from the channel by an inner wall formed by a rubber ring, air chambers are provided on opposite sides of the limit block, the air chambers are connected to the channel through a connecting port, the openings of the two air chambers are installed in conjunction with the same U-shaped block, a spring is also installed in the air chamber, and one end of the U-shaped block extends out of chamber two. The mounting seat and the capillary installed in conjunction with the present invention are taken by hand, and the bottom of the capillary is passed through the stepped hole, so that the shell in the mounting seat is installed in conjunction with the stepped hole, and the U-shaped block extending out of the shell is fitted in the limit groove to achieve positioning installation.

Description

Technical Field

[0001] The invention relates to the technical field of glass capillary fixtures, in particular to a glass capillary fixture for viscosity measurement. Background Art

[0002] Capillary viscometers are widely used to measure the kinematic viscosity of liquids. Existing capillary viscometers have various structural forms, such as Ubbelohde viscometer, Finn viscometer, Pininfarina viscometer, and counterflow viscometer. In practical applications, the viscometer is usually combined with a sensor device and a control device to form an automatic testing device. Its working principle is to calculate the kinematic viscosity of the liquid at a certain constant temperature by measuring the time it takes for the liquid to flow through the capillary viscometer under gravity.

[0003] During the experiment, the glass bulb part must be completely immersed in a high-precision constant temperature liquid. The top of the capillary must be fixed by a clamp. This requires the use of a glass capillary clamp. The existing capillary clamp is a clamp body, which is not easy to disassemble and install during use. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a glass capillary fixture for viscosity measurement, comprising a disk body, a mounting seat and a capillary, wherein the disk body is provided with a circular hole and a step hole, wherein the circular hole is located in the middle of the disk body, and the step holes are provided in a plurality, and the plurality of step holes are distributed in a ring around the circular hole, wherein a limiting groove is provided on the inner wall of the step hole, and the limiting groove is located on a side away from the circular hole, and the step hole is connected with the circular hole through a through groove provided therein, and the mounting seat comprises a shell, and the shell is cooperatively mounted in the step hole, and chamber one and chamber two are provided in the shell, and the chamber one and chamber two are divided by a partition provided in the shell, and a mounting plate is provided on the partition. Hole, a drain port connected with chamber one is opened on the peripheral side of the shell, a limit block is provided in chamber two, a light hole corresponding to the mounting hole is provided on the limit block, a channel is provided in the limit block, the light hole is separated from the channel by an inner wall formed by a rubber ring, air chambers are provided on opposite sides of the limit block, the air chambers are connected with the channel through a connecting port, the openings of the two air chambers are installed in conjunction with the same U-shaped block, a spring is also installed in the air chamber, one end of the U-shaped block extends out of chamber two, the protruding end of the U-shaped block slides along the inner wall of the step hole, and the port of the capillary tube passes through the mounting hole of the partition and the light hole of the limit block in sequence and extends to the outside of the shell.

[0005] The inner diameter of the mounting hole of the partition and the inner diameter of the optical hole of the limiting block are both larger than the outer diameter of the capillary, so that the port of the capillary is easily inserted into the mounting hole of the partition and the optical hole of the limiting block. The matching mounting seat and the capillary are taken by hand, and the bottom of the capillary is passed through the step hole to realize the matching installation of the shell in the mounting seat in the step hole. At the same time, the U-shaped block extending out of the shell is matched in the limiting groove to realize the positioning installation. The mounting seat and the capillary are rotated 180 degrees to realize the connection between the discharge port and the through groove. During the rotation, the protruding end of the U-shaped block is moved toward the step on the inner wall of the limiting groove. During the movement of the inner wall of the hole, the inner wall of the step hole pushes the U-shaped block to retract into the second chamber, and at the same time, the spring is squeezed. The volume of the air chamber is reduced under the squeezing of the inserted end of the U-shaped block, and the gas stored in the air chamber enters the interior of the channel through the connecting port. As the air pressure inside the channel increases, the rubber ring is expanded into the light hole, thereby completing the clamping of the capillary passing through the light hole, avoiding contact between hard objects and the side wall of the capillary, and avoiding the capillary from breaking during the clamping process. After the experiment is completed, the capillary is easily removed by rotating the mounting seat and resetting the capillary.

[0006] Furthermore, a roller is rotatably mounted on the protruding end of the U-shaped block, and the roller slides along the inner wall formed by the limiting groove and the step hole. The U-shaped block slides along the inner wall formed by the limiting groove and the step hole. The sliding of the roller reduces friction resistance and reduces the wear of the protruding end of the U-shaped block.

[0007] Furthermore, a limiting ridge is provided in the opening of the air chamber, and a slide groove is provided on the U-shaped block. The limiting ridge moves along the slide groove, and the movement range of the U-shaped block is limited by the cooperation between the limiting ridge and the slide groove to prevent the end of the U-shaped block from sliding out of the opening of the air chamber.

[0008] Furthermore, the discharge port and the extended end of the U-shaped block are on the same side, and the housing is rotated to connect the discharge port with the through groove, so that when the discharge port is connected with the through groove, the U-shaped block is in a contracted state.

[0009] Furthermore, the opening of the second chamber is closed by a cover body, and the cover body is provided with a through hole corresponding to the capillary port to reduce the entry of dust.

[0010] Furthermore, a circulation component is fitted in the circular hole.

[0011] Furthermore, the circulation component includes a motor, a tubular member and a spiral rod. The tubular member is inserted into the circular hole, and the tubular member is fixed in the circular hole by an upper limit ring and a lower limit ring provided on the outside. The tubular member includes an outer tube body and an inner tube body. The inner tube body is coaxially distributed inside the outer tube body, and the bottom end of the cavity between the outer tube body and the inner tube body is closed. A liquid inlet passes through the circumferential side surface of the outer tube body, and the cavity is connected to the through groove through the liquid inlet. A motor is fixed to the top end of the outer tube body, and the spiral rod is located in the cavity between the outer tube body and the inner tube body, and the spiral rod is transmission connected to the motor.

[0012] Furthermore, the main body of the spiral rod is a cylindrical structure, and spiral blades are provided on both the inner and outer sides of the spiral rod, and the rotation directions of the two groups of spiral blades are opposite.

[0013] A viscosity measuring device comprises a glass capillary fixture;

[0014] It also includes a controller, one side of the controller is provided with a connecting platform, and a heating rod is vertically installed on the connecting platform;

[0015] Furthermore, a transparent cover is installed on the connecting platform, a disc is installed on the port of the transparent cover, and the inner tube is sleeved on the outer side of the heating rod.

[0016] The present invention has the following beneficial effects:

[0017] The mounting seat and capillary tube that are matched and installed in the present invention are taken by hand, and the bottom of the capillary tube is passed through the step hole, so that the shell in the mounting seat is matched and installed in the step hole, and the U-shaped block extending out of the shell is matched in the limiting groove to realize positioning installation.

[0018] The present invention rotates the mounting seat and the capillary by 180 degrees to achieve communication between the discharge port and the through groove. During the rotation, the extended end of the U-shaped block moves from the inner wall of the limiting groove to the inner wall of the step hole. The inner wall of the step hole pushes the U-shaped block to retract into the second chamber, and the spring is squeezed at the same time. The volume of the air chamber is reduced under the squeezing of the extended end of the U-shaped block, and the gas stored in the air chamber enters the interior of the channel through the connecting port. As the air pressure inside the channel increases, the rubber ring is expanded into the light hole, thereby completing the clamping of the capillary passing through the light hole, avoiding contact between hard objects and the side wall of the capillary, and avoiding the capillary from breaking during the clamping process.

[0019] During the process of the motor of the present invention driving the installed spiral rod to rotate, the water stored in the transparent cover body enters the cavity between the outer tube body and the inner tube body through the discharge port of chamber one through the through groove and the liquid inlet. Under the push of the outer spiral blades, the liquid moves downward, and is lifted by the inner spiral blades to enter the interior of the inner tube body. Since the inner tube body is sleeved on the outside of the heating rod, the water flows through the heating rod for heating and is discharged through the bottom end of the inner tube body, thereby realizing the circulation of water inside the transparent cover body and achieving uniform heating of the water.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the matching structure of the mounting seat and the capillary tube of the present invention;

[0025] Figure 4 It is a schematic diagram of the second cross-sectional structure of the chamber of the present invention;

[0026] Figure 5 It is a schematic diagram of the disk structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the circulation component of the present invention;

[0028] Figure 7 It is a schematic diagram of the cross-sectional structure of the circulation component of the present invention;

[0029] Figure 8 It is a schematic structural diagram of the viscosity measuring device of the present invention;

[0030] Fig. 9 It is a schematic diagram of the controller structure of the present invention;

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. disc body; 101. round hole; 102. step hole; 103. stopper groove; 104. through groove; 2. mounting seat; 201. shell; 2011. chamber 1; 2012. partition; 2013. chamber 2; 2014. drain port; 202. cover body; 203. stopper block; 2031. channel; 2032. rubber ring; 2033. connecting port; 2034. air chamber ; 2035, limiting ridge; 204, U-shaped block; 2041, slide groove; 205, spring; 206, roller; 3, capillary; 4, motor; 5, tubular member; 501, outer tube body; 502, inner tube body; 503, liquid inlet; 6, upper limit ring; 7, lower limit ring; 8, screw rod; 9, controller; 901, connecting platform; 902, heating rod; 10, transparent cover. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses. Embodiment 1

[0034] like Figure 1-Figure 7As shown, a glass capillary fixture for viscosity measurement includes a disk body 1, a mounting seat 2 and a capillary 3. The disk body 1 is provided with a circular hole 101 and a stepped hole 102. The circular hole 101 is located in the middle of the disk body 1. There are a plurality of stepped holes 102, which are distributed in an annular manner around the circular hole 101. A limiting groove 103 is provided on the inner wall of the stepped hole 102, and the limiting groove 103 is located on a side away from the circular hole 101. The stepped hole 102 is connected with the circular hole 101 through a through groove 104. The mounting seat 2 includes a shell 201, which is mounted in the stepped hole 102. A chamber 1 2011 and a chamber 2 2013 are provided in the shell 201. The chamber 1 2011 and the chamber 2 2013 are divided by a partition 2012 provided in the shell 201. The partition 2012 is provided with a mounting hole. The shell 201 A discharge port 2014 communicating with chamber one 2011 is provided on the peripheral side surface, a limit block 203 is provided in chamber two 2013, a light hole corresponding to the mounting hole is provided on the limit block 203, a channel 2031 is provided in the limit block 203, the light hole is separated from the channel 2031 by an inner wall formed by a rubber ring 2032, air chambers 2034 are provided on opposite sides of the limit block 203, the air chamber 2034 is communicated with the channel 2031 through a connecting port 2033, the openings of the two air chambers 2034 are installed in conjunction with the same U-shaped block 204, a spring 205 is also installed in the air chamber 2034, one end of the U-shaped block 204 extends out of chamber two 2013, the protruding end of the U-shaped block 204 slides along the inner wall of the step hole, and the port of the capillary 3 sequentially passes through the mounting hole of the partition 2012 and the light hole of the limit block 203 and extends to the outside of the shell 201.

[0035] The inner diameter of the mounting hole of the partition 2012 and the inner diameter of the optical hole of the stop block 203 are both larger than the outer diameter of the capillary 3, so that the end of the capillary 3 can be easily inserted into the mounting hole of the partition 2012 and the optical hole of the stop block 203;

[0036] The matched mounting seat 2 and capillary 3 are taken by hand, and the bottom of the capillary 3 is passed through the step hole 102, so that the housing 201 in the mounting seat 2 is matched and installed in the step hole 102, and the U-shaped block 204 extending out of the housing 201 is matched in the limiting groove 103 to achieve positioning installation;

[0037] The mounting seat 2 and the capillary 3 are rotated 180° to realize the communication between the discharge port 2014 and the through groove 104. During the rotation, the extended end of the U-shaped block 204 moves from the inner wall of the limiting groove 103 to the inner wall of the stepped hole 102. The inner wall of the stepped hole 102 pushes the U-shaped block 204 to retract into the second chamber 2013, and the spring 205 is squeezed at the same time. The volume of the air chamber 2034 is reduced under the squeezing of the extended end of the U-shaped block 204. The gas stored in the air chamber 2034 enters the interior of the channel 2031 through the connecting port 2033. As the air pressure inside the channel 2031 increases, the rubber ring 2032 is expanded into the light hole, thereby completing the clamping of the capillary 3 passing through the light hole, avoiding the contact between the hard object and the side wall of the capillary 3, and preventing the capillary 3 from breaking during the clamping process.

[0038] After the experiment is completed, the mounting base 2 and the capillary 3 are rotated to reset, so that the capillary 3 can be removed easily.

[0039] A roller 206 is rotatably mounted on the protruding end of the U-shaped block 204, and the roller 206 slides along the inner wall formed by the limiting groove 103 and the step hole 102. The U-shaped block 204 slides along the inner wall formed by the limiting groove 103 and the step hole 102, and the sliding of the roller 206 reduces friction resistance and reduces the wear of the protruding end of the U-shaped block 204.

[0040] A limiting ridge 2035 is provided in the opening of the air chamber 2034, and a slide groove 2041 is provided on the U-shaped block 204. The limiting ridge 2035 moves along the slide groove 2041, and the movement range of the U-shaped block 204 is limited by the cooperation between the limiting ridge 2035 and the slide groove 2041, so as to prevent the end of the U-shaped block 204 from sliding out of the opening of the air chamber 2034.

[0041] The discharge port 2014 and the extended end of the U-shaped block 204 are on the same side, and the housing 201 is rotated to connect the discharge port 2014 with the through groove 104, so that when the discharge port 2014 is connected with the through groove 104, the U-shaped block 204 is in a contracted state.

[0042] The opening of the second chamber 2013 is closed by a cover 202, and a through hole corresponding to the end of the capillary 3 is provided on the cover 202 to reduce the entry of dust.

[0043] A circulation component is installed in the circular hole 101 .

[0044] The circulation component includes a motor 4, a tubular member 5 and a screw rod 8. The tubular member 5 is inserted into the circular hole 101. The tubular member 5 is fixed in the circular hole 101 by an upper limit ring 6 and a lower limit ring 7 provided on the outside. The tubular member 5 includes an outer tube body 501 and an inner tube body 502. The inner tube body 502 is coaxially distributed inside the outer tube body 501. The bottom end of the cavity between the outer tube body 501 and the inner tube body 502 is closed. A liquid inlet 503 passes through the peripheral side of the outer tube body 501. The cavity is connected to the through groove 104 through the liquid inlet 503. The motor 4 is fixed to the top of the outer tube body 501. The screw rod 8 is located in the cavity between the outer tube body 501 and the inner tube body 502. At the same time, the screw rod 8 is connected to the motor 4 in terms of transmission.

[0045] The main body of the screw rod 8 is a cylindrical structure. Spiral blades are arranged on both the inner and outer sides of the screw rod 8. The rotation directions of the two sets of spiral blades are opposite.

[0046] Working principle:

[0047] The inner diameter of the mounting hole of the partition 2012 and the inner diameter of the optical hole of the stop block 203 are both larger than the outer diameter of the capillary 3, so that the end of the capillary 3 can be easily inserted into the mounting hole of the partition 2012 and the optical hole of the stop block 203;

[0048] The matched mounting seat 2 and capillary 3 are taken by hand, and the bottom of the capillary 3 is passed through the step hole 102, so that the housing 201 in the mounting seat 2 is matched and installed in the step hole 102, and the U-shaped block 204 extending out of the housing 201 is matched in the limiting groove 103 to achieve positioning installation;

[0049] The mounting seat 2 and the capillary 3 are rotated 180° to realize the communication between the discharge port 2014 and the through groove 104. During the rotation, the extended end of the U-shaped block 204 moves from the inner wall of the limiting groove 103 to the inner wall of the stepped hole 102. The inner wall of the stepped hole 102 pushes the U-shaped block 204 to retract into the second chamber 2013, and the spring 205 is squeezed at the same time. The volume of the air chamber 2034 is reduced under the squeezing of the extended end of the U-shaped block 204. The gas stored in the air chamber 2034 enters the interior of the channel 2031 through the connecting port 2033. As the air pressure inside the channel 2031 increases, the rubber ring 2032 is expanded into the light hole, thereby completing the clamping of the capillary 3 passing through the light hole, avoiding the contact between the hard object and the side wall of the capillary 3, and preventing the capillary 3 from breaking during the clamping process.

[0050] After the experiment is completed, the mounting base 2 and the capillary 3 are rotated to reset, so that the capillary 3 can be removed easily. Embodiment 2

[0051] like Figure 8-Figure 9 As shown, a viscosity measuring device includes a glass capillary fixture;

[0052] It also includes a controller 9, a connection platform 901 is provided on one side of the controller 9, and a heating rod 902 is vertically installed on the connection platform 901;

[0053] A transparent cover 10 is installed on the connecting platform 901 , and the plate 1 is installed on the port of the transparent cover 10 . Meanwhile, the inner tube 502 is sleeved on the outer side of the heating rod 902 .

[0054] Working principle:

[0055] When the motor 4 drives the installed spiral rod 8 to rotate, the water stored in the transparent cover body 10 enters the cavity between the outer tube body 501 and the inner tube body 502 through the discharge port 2014 of the chamber 1 2011, the through groove 104 and the liquid inlet 503. Under the push of the outer spiral blades, the liquid moves downward, and is lifted by the inner spiral blades to enter the interior of the inner tube body 502. Since the inner tube body 502 is sleeved on the outside of the heating rod 902, the water flows through the heating rod 902 for heating and is discharged through the bottom end of the inner tube body 502, thereby realizing the circulation of water inside the transparent cover body 10 and uniform heating of the water.

[0056] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A glass capillary fixture for viscosity measurement, comprising a disc (1), a mounting seat (2) and a capillary (3), characterized in that: The disk body (1) is provided with a circular hole (101) and a stepped hole (102), wherein the circular hole (101) is located in the middle of the disk body (1), and a plurality of stepped holes (102) are provided, and the plurality of stepped holes (102) are distributed in a ring around the circular hole (101); Wherein, a limiting groove (103) is provided on the inner wall of the step hole (102), and the step hole (102) is connected with the circular hole (101) via a through groove (104); The mounting seat (2) comprises a shell (201), and the shell (201) is mounted in the step hole (102); The shell (201) is provided with chamber one (2011) and chamber two (2013), and the chamber one (2011) and chamber two (2013) are divided by a partition (2012) provided in the shell (201), and the partition (2012) is provided with a mounting hole; A liquid discharge port (2014) communicating with chamber 1 (2011) is provided on a peripheral side surface of the shell (201); The chamber 2 (2013) is provided with a limit block (203), the limit block (203) is provided with a light hole corresponding to the mounting hole, the limit block (203) is provided with a channel (2031), and the light hole is separated from the channel (2031) by an inner wall formed by a rubber ring (2032); Air chambers (2034) are provided on opposite sides of the limit block (203), and the air chambers (2034) are connected to the channel (2031) through the communication port (2033); The openings of the two air chambers (2034) are mounted in cooperation with the same U-shaped block (204), a spring (205) is also mounted in the air chamber (2034), one end of the U-shaped block (204) extends out of the second chamber (213), and the extended end of the U-shaped block (204) slides along the inner wall of the step hole; The port of the capillary tube (3) sequentially passes through the mounting hole of the partition (2012) and the light hole of the limit block (203) and extends to the outside of the housing (201); The liquid discharge port (2014) and the extended end of the U-shaped block (204) are on the same side, and the housing (201) is rotated to achieve communication between the liquid discharge port (2014) and the through groove (104).

2. A glass capillary fixture for viscosity measurement according to claim 1, characterized in that: A roller (206) is rotatably mounted on the protruding end of the U-shaped block (204), and the roller (206) slides along the inner wall formed by the limiting groove (103) and the step hole (102).

3. A glass capillary fixture for viscosity measurement according to claim 1, characterized in that: A limiting convex ridge (2035) is provided in the opening of the air chamber (2034); The U-shaped block (204) is provided with a slide groove (2041), and the limiting ridge (2035) moves along the slide groove (2041).

4. A glass capillary fixture for viscosity measurement according to claim 1, characterized in that: The opening of the second chamber (2013) is closed by a cover body (202), and the cover body (202) is provided with a through hole corresponding to the port of the capillary tube (3).

5. A glass capillary fixture for viscosity measurement according to claim 1, characterized in that: A circulation component is installed in the circular hole (101).

6. A glass capillary fixture for viscosity measurement according to claim 5, characterized in that: The circulation assembly comprises a motor (4), a tubular member (5) and a spiral rod (8); the tubular member (5) is inserted into the circular hole (101); the tubular member (5) is fixed in the circular hole (101) by an upper limit ring (6) and a lower limit ring (7) provided on the outside; The tubular member (5) comprises an outer tube body (501) and an inner tube body (502); the inner tube body (502) is coaxially arranged inside the outer tube body (501); and the bottom end of the cavity between the outer tube body (501) and the inner tube body (502) is closed; A liquid inlet (503) is formed on the peripheral side of the outer tube body (501), and the cavity is connected to the through groove (104) through the liquid inlet (503); A motor (4) is fixed to the top end of the outer tube (501); The spiral rod (8) is located in the cavity between the outer tube body (501) and the inner tube body (502), and the spiral rod (8) is transmission-connected to the motor (4).

7. A glass capillary fixture for viscosity measurement according to claim 6, characterized in that: The main body of the spiral rod (8) is a cylindrical structure, and spiral blades are provided on both the inner and outer sides of the spiral rod (8), with the two sets of spiral blades having opposite rotation directions.

8. A viscosity measuring device, characterized in that: A glass capillary fixture comprising any one of claims 1 to 7; It also comprises a controller (9), a connection platform (901) being provided on one side of the controller (9), and a heating rod (902) being vertically mounted on the connection platform (901); A transparent cover body (10) is installed on the connecting platform (901), and a disc body (1) is installed on the port of the transparent cover body (10), while the inner tube body (502) is sleeved on the outside of the heating rod (902).

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