Rotary viscometer

Abstract

The utility model relates to the technical field of rotary viscometers, and provides a rotary viscometer, which comprises a support disc, a connecting piece and a rotor, the connecting piece is rotatably connected to the bottom of the support disc, and the upper end of the rotor is fixed to the bottom of the connecting piece; the bottom of the connecting piece is detachably connected with a stabilizing piece which sleeves the rotor in a rolling manner, the stabilizing piece comprises a mounting sleeve head, a plurality of side rods, a bottom plate and a rolling type limiting part, the mounting sleeve head is detachably connected to the bottom of the connecting piece, the side rods are vertically fixed to the periphery of the bottom of the mounting sleeve head, and the bottom plate is fixed to the bottoms of the side rods; the rolling type limiting component is mounted among the plurality of side rods and / or on the bottom plate and is in rolling connection with the rotor; the rotary viscometer has the beneficial effect that the problem that the accuracy of a test result of the rotary viscometer is reduced because the rotor deviates due to the influence of coating resistance in a rotating process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotational viscometers, and relates to a rotational viscometer. Background Art

[0002] A rotational viscometer is an instrument used to measure the viscosity of fluids and is widely used in industries such as petrochemical, food, medicine, polymers, and cosmetics. The rotational viscometer calculates viscosity by measuring the resistance generated by the fluid when it is subjected to shear force. Its working principle is based on the internal frictional force between the molecules within the fluid, and this force is an important characterization of the fluidity of the substance. Viscosity is a physical quantity that measures the resistance of a fluid to flow and is crucial for improving product quality, chemical process design, and scientific research on new materials and new processes.

[0003] A Chinese patent with the publication number CN220556410U was retrieved, which provides a rotational viscometer for coating detection, including a bracket and a machine head. A connection end is provided on the machine head, a rotor is installed at the connection end, connecting rods are respectively provided on both sides of the connection end corresponding to the rotor, and a positioning and protection component that moves up and down relative to the rotor is provided on the connecting rods.

[0004] Although through the above structure, when adjusting the height of the machine head of the rotational viscometer, the bottom positioning frame can protect the bottom end of the rotor to avoid the rotor touching the bottom of the container loaded with the paint to be tested, and the depth of the paint container can be measured through the positioning and protection component, the positioning and protection component is not convenient for positioning the rotor, and the rotor is likely to shift under the influence of the paint resistance during rotation, which will further affect the test results of the rotational viscometer. Summary of the Utility Model

[0005] A rotational viscometer is provided to solve the problem that the rotor shifts under the influence of the paint resistance during rotation, thereby reducing the accuracy of the test results of the rotational viscometer for the above technical problems existing in the prior art.

[0006] The purpose and efficacy of the utility model are achieved by the following specific technical means:

[0007] A rotational viscometer includes a support disk, a connecting member, and a rotor. The connecting member is rotatably connected to the bottom of the support disk, and the upper end of the rotor is fixed to the bottom of the connecting member.

[0008] A stabilizing member that is removably connected to the bottom of the connecting member and rolls around the outside of the rotor is provided. The stabilizing member includes a mounting socket, side rods, a bottom plate, and a rolling limiting member. The mounting socket is removably connected to the bottom of the connecting member. A number of side rods are vertically fixed to the outer periphery of the bottom of the mounting socket. The bottom plate is fixed to the bottoms of the plurality of side rods. The rolling limiting member is installed between the plurality of side rods and / or on the bottom plate and is in rolling connection with the rotor.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] On the one hand, the stabilizing member is provided to prevent the rotor from touching the inner wall of the container containing the paint to be measured, and on the other hand, it is used to limit the rotor to achieve the purpose of stable rotation of the rotor; the mounting socket can be connected to the bottom of the connecting member by detachable connection methods such as threaded connection and snap connection, which is convenient for the staff to install or disassemble the mounting socket; the side rods and the bottom plate are used together to protect the rotor from directly colliding with the surrounding and bottom of the inner wall of the container; since the rolling limiting member is in rolling connection with the rotor, the rolling limiting member can limit the rotor to ensure the stability of the rotor during rotation.

[0011] Optionally, the rolling limiting member includes a first limiting mechanism and / or a second limiting mechanism. The first limiting mechanism is sleeved and fixed on the plurality of side rods, and the rotor is located inside the first limiting mechanism and is in rolling connection with it. The second limiting mechanism is installed on the bottom plate and is in rolling connection with the bottom of the rotor.

[0012] Optionally, the first limiting mechanism includes a limiting ring, a locking sleeve, and limiting balls. The limiting ring is sleeved outside the rotor and is located inside the plurality of side rods. A number of locking sleeves are respectively sleeved and fixed on the plurality of side rods, and there is an elastic connection between the locking sleeve and the limiting ring. A number of limiting balls are respectively installed around the inner wall of the limiting ring, and the limiting balls are all in rolling connection with the outer wall of the rotor.

[0013] Optionally, a buffer connection block is fixed between the locking sleeve and the limiting ring.

[0014] Optionally, a rolling groove is opened at the center of the bottom of the rotor, and a through hole corresponding to the rolling groove is opened at the bottom of the bottom plate;

[0015] The second limiting mechanism includes a threaded rod, nuts, and positioning balls. The threaded rod is inserted into the through hole. Two nuts are both threadedly connected to the threaded rod, and the two nuts are respectively in contact with the top and bottom of the bottom plate. The positioning balls extend into the rolling groove and are in rolling connection with it.

[0016] Optionally, buffer gaskets are provided between the nuts and the bottom plate, and the buffer gaskets are sleeved on the threaded rod.

[0017] Optionally, a motor is installed on the top of the support disc, and the output end of the motor is drivingly connected to the connecting member through a gear transmission member.

[0018] Optionally, a lifting rod is fixed to one side of the support disc. The lifting rod is close to the motor, and a base is fixed to the bottom end of the lifting rod.

[0019] Optionally, the lifting rod is an electric lifting rod.

[0020] Optionally, a threaded groove is formed in the outer periphery of the bottom of the connecting member, and a thread matching the threaded groove is formed in the top of the mounting socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural schematic diagram of a rotational viscometer with a first limiting mechanism according to the present invention;

[0022] Figure 2 is a three-dimensional structural schematic diagram of the connecting member of the present invention;

[0023] Figure 3 is a three-dimensional structural schematic diagram of a stabilizing member with a first limiting mechanism according to the present invention;

[0024] Figure 4 For the present invention Figure 1 partial structural schematic diagram at A.

[0025] Figure 5 is a three-dimensional structural schematic diagram of a rotational viscometer with a first limiting mechanism and a first limiting mechanism according to the present invention;

[0026] Figure 6 is a three-dimensional structural schematic diagram of a rotational viscometer with a second limiting mechanism according to the present invention;

[0027] Figure 7 is a side sectional structural schematic diagram of the rotor, the bottom plate and the second limiting mechanism of the present invention.

[0028] Reference numerals in the drawings: base 1, lifting rod 2, support disc 3, motor 4, connecting member 5, threaded groove 51, rotor 6, rolling groove 61, stabilizing member 7, mounting socket 71, side rod 72, bottom plate 73, through hole 731, threaded rod 732, nut 733, positioning ball 734, buffer gasket 735, limiting ring 74, locking sleeve 75, buffer connection block 76, limiting ball 77. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Please refer to Figures 1-7 for further description of the embodiments of the present invention;

[0030] As Figure 1As shown, a rotational viscometer is mainly used for testing the viscosity of coatings, which specifically includes a support plate 3, a connecting piece 5 and a rotor 6. The connecting piece 5 is rotatably connected to the bottom of the support plate 3. In order to facilitate testing of products to be tested at different heights, a lifting rod 2 is fixed to one side of the support plate 3. Conventional manual lifting rods such as threaded lifting rods and snap-on lifting rods can be selected. In order to facilitate adjusting the height of the rotational viscometer, an electric lifting rod can also be selected; a base 1 is fixed to the bottom end of the lifting rod 2, and the base 1 is used to support the components above it. The base 1 can adopt a triangular base or a base of other shapes; a motor 4 is installed on the top of the support plate 3, and the output end of the motor 4 is connected to the connecting piece 5 through a gear transmission member. In order to Taking into account the overall stability of the rotational viscometer, the lifting rod 2 is designed on the side of the support plate 3 close to the motor 4; of course, the motor 4 can also be fixedly connected to the connecting piece 5 through a coupling, and the upper end of the rotor 6 is fixed to the bottom of the connecting piece 5; when using the rotational viscometer, a container filled with paint is placed under the rotor 6, and the height of the support plate 3, the motor 4, the connecting piece 5 and the rotor 6 is adjusted by adjusting the lifting rod 2. After the rotor 6 is submerged in the paint, the lifting rod 2 is stopped. At this time, the motor 4 is energized to drive the connecting piece 5 and the rotor 6 to rotate together, and the viscosity of the paint is calculated by utilizing the resistance encountered by the rotor 6 when rotating in the paint. This technology is a prior art and will not be described in detail here.

[0031] like Figure 1 , 4 As shown in , 5 and 6, the bottom of the connecting member 5 is detachably connected to a stabilizing member 7 which is rollably sleeved on the outside of the rotor 6. The stabilizing member 7 is provided for the rotor 6 to touch the inner wall of the container loaded with the paint to be tested on the one hand, and is used to limit the rotor 6 on the other hand, so as to achieve the purpose of stable rotation of the rotor 6;

[0032] The stabilizing member 7 specifically includes a mounting sleeve 71 detachably connected to the bottom of the connecting member 5, three side rods 72 vertically fixed to the outer periphery of the bottom of the mounting sleeve 71, a bottom plate 73 fixed to the bottom of the three side rods 72, and a rolling limiting component installed between the three side rods 72 and / or on the bottom plate 73 and rollingly connected to the rotor 6, wherein the mounting sleeve 71 can be connected to the bottom of the connecting member 5 by a detachable connection method such as a threaded connection or a snap connection; the three side rods 72 are spaced at equal intervals and form a triangle, and the three side rods 72 and the bottom plate 73 are used together to protect the rotor 6 to prevent the rotor 6 from directly colliding with the inner wall and the bottom of the inner wall of the container; in addition, the three side rods 72 and / or the bottom plate 73 are also used to support and install the rolling limiting component. Since the rolling limiting component is rollingly connected to the rotor 6, the rolling limiting component can limit the rotor 6 to ensure the stability of the rotor 6 when it rotates;

[0033] Among them, the rolling limit component specifically includes a first limit mechanism and / or a second limit mechanism. The first limit mechanism is sleeved and fixed on three side rods 72, and the rotor 6 is located inside the first limit mechanism and is in rolling connection with it. The setting of the first limit mechanism can prevent the rotor 6 from swinging laterally when rotating. The second limit mechanism is installed on the bottom plate 73 and is in rolling connection with the bottom of the rotor 6. While the second limit mechanism supports the rotor 6, it can also limit it to prevent the rotor 6 from swinging. During design, a rolling limit component with only the first limit mechanism or the second limit mechanism can be set, for example, for viscosity testing of fluids such as coatings, cosmetics, polymers, etc. with relatively low viscosity (less resistance during testing), or a rolling limit component with both the first limit mechanism and the second limit mechanism can be designed, for example, for adhesives with relatively high viscosity (greater resistance during testing). It should be noted that the rolling friction between the rolling limit component and the rotor 6 needs to be tested in advance to ensure the accuracy of the later test results of the rotational viscometer.

[0034] As Figures 3-4 shown, the first limit mechanism includes a limit ring 74 sleeved outside the rotor 6 and located inside the three side rods 72, three locking sleeves 75 respectively sleeved and fixed on the three side rods 72, and a number of limit balls 77 respectively installed around the inner wall of the limit ring 74. The limit balls 77 are all in rolling connection with the outer wall of the rotor 6, so as to limit the rotor 6 in the limit ring 74. It should be noted that the locking sleeve 75 and the limit ring 74 are connected in an elastic connection manner. For example, a buffer connection block 76 is fixed between the locking sleeve 75 and the limit ring 74, and the buffer connection block 76 is made of elastic rubber. When the side rod 72 collides with the side wall of the container, the buffer connection block 76 can buffer the impact force to prevent the limit ring 74 and the rotor 6 from being damaged.

[0035] As Figures 6-7 shown, a rolling groove 61 is opened at the center of the bottom of the rotor 6, and a through hole 731 corresponding to the rolling groove 61 is opened at the bottom of the bottom plate 73;

[0036] The second limiting mechanism includes a threaded rod 732, nuts 733 and positioning balls 734. The threaded rod 732 is inserted into the through hole 731. There are two nuts 733, both of which are threadedly connected to the threaded rod 732. The two nuts 733 are respectively in contact with the top and bottom of the bottom plate 73. The positioning balls 734 extend into the rolling groove 61 and are in rolling connection with it. By using the two nuts 733, the threaded rod 732 can be firmly positioned on the bottom plate 73, so that the positioning balls 734 can roll stably in the rolling groove 61, thereby playing a role in supporting and limiting the rotor 6. In addition, buffer gaskets 735 are provided between the nuts 733 and the bottom plate 73. The buffer gaskets 735 are sleeved on the threaded rod 732. When the bottom plate 73 collides with the bottom of the inner wall of the container, the buffer gaskets 735 can buffer the impact force to prevent the rotor 6 from being damaged.

[0037] Preferably, as Figure 2 and 3 shown, a threaded groove 51 is formed in the outer periphery of the bottom of the connecting member 5, and a thread matching the threaded groove 51 is formed at the top of the mounting socket 71, which is convenient for installing the stabilizing member 7 on the connecting member 5 or removing the stabilizing member 7 from the connecting member 5.

Claims

1. A rotational viscometer, comprising a support disk (3), a connecting member (5) and a rotor (6). The connecting member (5) is rotatably connected to the bottom of the support disk (3), and the upper end of the rotor (6) is fixed to the bottom of the connecting member (5). It is characterized in that: A stabilizing member (7) that is detachably connected to the bottom of the connecting member (5) and is rollingly sleeved outside the rotor (6) is provided. The stabilizing member (7) includes a mounting socket (71), side rods (72), a bottom plate (73) and a rolling limiting member. The mounting socket (71) is detachably connected to the bottom of the connecting member (5). A plurality of side rods (72) are provided and are vertically fixed to the outer periphery of the bottom of the mounting socket (71). The bottom plate (73) is fixed to the bottoms of the plurality of side rods (72). The rolling limiting member is installed between the plurality of side rods (72) and / or on the bottom plate (73) and is rollingly connected to the rotor (6).

2. The rotational viscometer according to claim 1, wherein: The rolling limiting member includes a first limiting mechanism and / or a second limiting mechanism. The first limiting mechanism is sleeved and fixed on the plurality of side rods (72), and the rotor (6) is located inside the first limiting mechanism and is rollingly connected thereto. The second limiting mechanism is installed on the bottom plate (73) and is rollingly connected to the bottom of the rotor (6).

3. The rotational viscometer according to claim 2, wherein: The first limiting mechanism includes a limiting ring (74), a locking sleeve (75) and limiting balls (77). The limiting ring (74) is sleeved outside the rotor (6) and is located inside the plurality of side rods (72). A plurality of locking sleeves (75) are provided and are respectively sleeved and fixed on the plurality of side rods (72), and the locking sleeve (75) is elastically connected to the limiting ring (74). A plurality of limiting balls (77) are provided and are respectively installed around the inner wall of the limiting ring (74), and the limiting balls (77) are all rollingly connected to the outer wall of the rotor (6).

4. A rotational viscometer according to claim 3, characterized in that: A buffer connecting block (76) is fixed between the locking sleeve (75) and the limiting ring (74).

5. The rotational viscometer according to claim 2, wherein: A rolling groove (61) is formed at the center of the bottom of the rotor (6), and a through hole (731) corresponding to the rolling groove (61) is formed at the bottom of the bottom plate (73); The second limiting mechanism includes a threaded rod (732), nuts (733) and positioning balls (734). The threaded rod (732) is inserted into the through hole (731). Two nuts (733) are provided and are both threadedly connected to the threaded rod (732), and the two nuts (733) are respectively in contact with the top and bottom of the bottom plate (73). The positioning balls (734) extend into the rolling groove (61) and are rollingly connected thereto.

6. The rotational viscometer according to claim 5, characterized in that: Buffer gaskets (735) are respectively arranged between the nuts (733) and the bottom plate (73), and the buffer gaskets (735) are sleeved on the threaded rod (732).

7. A rotational viscometer according to claim 1, characterized in that: A motor (4) is installed on the top of the support disk (3), and the output end of the motor (4) is in transmission connection with the connecting member (5) through a gear transmission member.

8. A rotational viscometer according to claim 7, characterized in that: A lifting rod (2) is fixed to one side of the support disk (3). The lifting rod (2) is close to the motor (4), and a base (1) is fixed to the bottom end of the lifting rod (2).

9. A rotational viscometer according to claim 8, wherein: The lifting rod (2) is an electric lifting rod.

10. A rotational viscometer according to claim 1, characterized in that: The bottom periphery of the connecting member (5) is provided with a thread groove (51), and the top of the mounting socket (71) is provided with a thread matching the thread groove (51).

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